diff --git a/Android.bp b/Android.bp
index c6f6251..0b4a925 100644
--- a/Android.bp
+++ b/Android.bp
@@ -2,5 +2,3 @@
     name: "android_filesystem_config_header",
     srcs: ["include/private/android_filesystem_config.h"],
 }
-
-subdirs = ["*"]
diff --git a/CleanSpec.mk b/CleanSpec.mk
index ebe5f4a..0a534a2 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -80,3 +80,14 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/sbin/charger)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/sbin/charger)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/sbin)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/sbin)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product_services)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product_services.img)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/product_services)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/product_services)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/product_services)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/debug_ramdisk/product_services)
+$(call add-clean-step, find $(PRODUCT_OUT) -type l -name "charger" -print0 | xargs -0 rm -f)
+$(call add-clean-step, rm -f $(PRODUCT_OUT)/system/bin/adbd)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/init/snapshotctl.rc)
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 716378b..0ec505d 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -4,19 +4,34 @@
       "name": "adbd_test"
     },
     {
+      "name": "adb_crypto_test"
+    },
+    {
+      "name": "adb_tls_connection_test"
+    },
+    {
+      "name": "CtsInitTestCases"
+    },
+    {
       "name": "debuggerd_test"
     },
     {
-      "name": "fs_mgr_unit_test"
+      "name": "CtsFsMgrTestCases"
     },
     {
       "name": "fs_mgr_vendor_overlay_test"
     },
     {
-      "name": "init_tests"
+      "name": "libbase_test"
     },
     {
-      "name": "libbase_test"
+      "name": "libpackagelistparser_test"
+    },
+    {
+      "name": "libcutils_test"
+    },
+    {
+      "name": "libmodprobe_tests"
     },
     {
       "name": "libprocinfo_test"
@@ -28,6 +43,13 @@
       "name": "memunreachable_test"
     },
     {
+      "name": "memunreachable_unit_test"
+    },
+    {
+      "name": "memunreachable_unit_test",
+      "host": true
+    },
+    {
       "name": "memunreachable_binder_test"
     },
     {
diff --git a/adb/Android.bp b/adb/Android.bp
index 01e00dd..dee48bf 100644
--- a/adb/Android.bp
+++ b/adb/Android.bp
@@ -25,7 +25,7 @@
         "-Wthread-safety",
         "-Wvla",
         "-DADB_HOST=1",         // overridden by adbd_defaults
-        "-DALLOW_ADBD_ROOT=0",  // overridden by adbd_defaults
+        "-DANDROID_BASE_UNIQUE_FD_DISABLE_IMPLICIT_CONVERSION=1",
     ],
     cpp_std: "experimental",
 
@@ -59,6 +59,9 @@
                 // MinGW hides some things behind _POSIX_SOURCE.
                 "-D_POSIX_SOURCE",
 
+                // libusb uses __stdcall on a variadic function, which gets ignored.
+                "-Wno-ignored-attributes",
+
                 // Not supported yet.
                 "-Wno-thread-safety",
             ],
@@ -77,16 +80,6 @@
     defaults: ["adb_defaults"],
 
     cflags: ["-UADB_HOST", "-DADB_HOST=0"],
-    product_variables: {
-        debuggable: {
-            cflags: [
-                "-UALLOW_ADBD_ROOT",
-                "-DALLOW_ADBD_ROOT=1",
-                "-DALLOW_ADBD_DISABLE_VERITY",
-                "-DALLOW_ADBD_NO_AUTH",
-            ],
-        },
-    },
 }
 
 cc_defaults {
@@ -110,6 +103,44 @@
     },
 }
 
+cc_defaults {
+    name: "libadbd_binary_dependencies",
+    static_libs: [
+        "libadb_crypto",
+        "libadb_pairing_connection",
+        "libadb_tls_connection",
+        "libadbd",
+        "libadbd_core",
+        "libadbconnection_server",
+        "libasyncio",
+        "libbrotli",
+        "libcutils_sockets",
+        "libdiagnose_usb",
+        "libmdnssd",
+        "libbase",
+
+        "libadb_protos",
+    ],
+
+    shared_libs: [
+        "libadbd_auth",
+        "libadbd_fs",
+        "libcrypto",
+        "libcrypto_utils",
+        "liblog",
+        "libselinux",
+    ],
+
+    target: {
+        recovery: {
+            exclude_static_libs: [
+                "libadb_pairing_auth",
+                "libadb_pairing_connection",
+            ],
+        },
+    },
+}
+
 // libadb
 // =========================================================
 // These files are compiled for both the host and the device.
@@ -120,7 +151,8 @@
     "adb_trace.cpp",
     "adb_unique_fd.cpp",
     "adb_utils.cpp",
-    "fdevent.cpp",
+    "fdevent/fdevent.cpp",
+    "fdevent/fdevent_poll.cpp",
     "services.cpp",
     "sockets.cpp",
     "socket_spec.cpp",
@@ -128,7 +160,7 @@
     "transport.cpp",
     "transport_fd.cpp",
     "transport_local.cpp",
-    "transport_usb.cpp",
+    "types.cpp",
 ]
 
 libadb_posix_srcs = [
@@ -136,11 +168,15 @@
     "sysdeps/posix/network.cpp",
 ]
 
+libadb_linux_srcs = [
+    "fdevent/fdevent_epoll.cpp",
+]
+
 libadb_test_srcs = [
     "adb_io_test.cpp",
     "adb_listeners_test.cpp",
     "adb_utils_test.cpp",
-    "fdevent_test.cpp",
+    "fdevent/fdevent_test.cpp",
     "socket_spec_test.cpp",
     "socket_test.cpp",
     "sysdeps_test.cpp",
@@ -155,21 +191,23 @@
 
     srcs: libadb_srcs + [
         "client/auth.cpp",
+        "client/adb_wifi.cpp",
         "client/usb_libusb.cpp",
         "client/usb_dispatch.cpp",
         "client/transport_mdns.cpp",
+        "client/transport_usb.cpp",
+        "client/pairing/pairing_client.cpp",
     ],
 
     generated_headers: ["platform_tools_version"],
 
     target: {
         linux: {
-            srcs: ["client/usb_linux.cpp"],
+            srcs: ["client/usb_linux.cpp"] + libadb_linux_srcs,
         },
         darwin: {
             srcs: ["client/usb_osx.cpp"],
         },
-
         not_windows: {
             srcs: libadb_posix_srcs,
         },
@@ -186,6 +224,10 @@
     },
 
     static_libs: [
+        "libadb_crypto",
+        "libadb_protos",
+        "libadb_pairing_connection",
+        "libadb_tls_connection",
         "libbase",
         "libcrypto_utils",
         "libcrypto",
@@ -195,6 +237,7 @@
         "libutils",
         "liblog",
         "libcutils",
+        "libprotobuf-cpp-lite",
     ],
 }
 
@@ -203,56 +246,37 @@
     defaults: ["adb_defaults"],
     srcs: libadb_test_srcs,
     static_libs: [
+        "libadb_crypto_static",
         "libadb_host",
+        "libadb_pairing_auth_static",
+        "libadb_pairing_connection_static",
+        "libadb_protos_static",
+        "libadb_tls_connection_static",
         "libbase",
         "libcutils",
         "libcrypto_utils",
         "libcrypto",
+        "liblog",
         "libmdnssd",
         "libdiagnose_usb",
+        "libprotobuf-cpp-lite",
+        "libssl",
         "libusb",
     ],
 
     target: {
         windows: {
             enabled: true,
+            ldflags: ["-municode"],
             shared_libs: ["AdbWinApi"],
         },
     },
 }
 
-cc_benchmark {
-    name: "adb_benchmark",
-    defaults: ["adb_defaults"],
-
-    srcs: ["transport_benchmark.cpp"],
-    target: {
-        android: {
-            static_libs: [
-                "libadbd",
-            ],
-        },
-        host: {
-            static_libs: [
-                "libadb_host",
-            ],
-        },
-    },
-
-    static_libs: [
-        "libbase",
-        "libcutils",
-        "libcrypto_utils",
-        "libcrypto",
-        "libdiagnose_usb",
-        "liblog",
-        "libusb",
-    ],
-}
-
 cc_binary_host {
     name: "adb",
 
+    stl: "libc++_static",
     defaults: ["adb_defaults"],
 
     srcs: [
@@ -264,35 +288,51 @@
         "client/console.cpp",
         "client/adb_install.cpp",
         "client/line_printer.cpp",
+        "client/fastdeploy.cpp",
+        "client/fastdeploycallbacks.cpp",
+        "client/incremental.cpp",
+        "client/incremental_server.cpp",
+        "client/incremental_utils.cpp",
         "shell_service_protocol.cpp",
     ],
 
+    generated_headers: [
+        "bin2c_fastdeployagent",
+        "bin2c_fastdeployagentscript"
+    ],
+
     static_libs: [
+        "libadb_crypto",
         "libadb_host",
+	"libadb_pairing_auth",
+	"libadb_pairing_connection",
+        "libadb_protos",
+        "libadb_tls_connection",
+        "libandroidfw",
         "libbase",
+        "libbrotli",
         "libcutils",
         "libcrypto_utils",
         "libcrypto",
+        "libfastdeploy_host",
         "libdiagnose_usb",
         "liblog",
+        "liblz4",
         "libmdnssd",
+        "libprotobuf-cpp-lite",
+        "libssl",
         "libusb",
         "libutils",
         "liblog",
-        "libcutils",
+        "libziparchive",
+        "libz",
     ],
 
-    stl: "libc++_static",
-
     // Don't add anything here, we don't want additional shared dependencies
     // on the host adb tool, and shared libraries that link against libc++
     // will violate ODR
     shared_libs: [],
 
-    required: [
-        "deploypatchgenerator",
-    ],
-
     // Archive adb, adb.exe.
     dist: {
         targets: [
@@ -328,27 +368,31 @@
     // libminadbd wants both, as it's used to build native tests.
     compile_multilib: "both",
 
-    srcs: libadb_srcs + libadb_posix_srcs + [
+    srcs: libadb_srcs + libadb_linux_srcs + libadb_posix_srcs + [
         "daemon/auth.cpp",
         "daemon/jdwp_service.cpp",
-    ],
-
-    local_include_dirs: [
-        "daemon/include",
+        "daemon/logging.cpp",
+        "daemon/adb_wifi.cpp",
     ],
 
     generated_headers: ["platform_tools_version"],
 
     static_libs: [
+        "libadbconnection_server",
         "libdiagnose_usb",
     ],
 
     shared_libs: [
+        "libadb_crypto",
+        "libadb_pairing_connection",
+        "libadb_protos",
+        "libadb_tls_connection",
+        "libadbd_auth",
         "libasyncio",
         "libbase",
         "libcrypto",
         "libcrypto_utils",
-        "libcutils",
+        "libcutils_sockets",
         "liblog",
     ],
 
@@ -361,15 +405,24 @@
                 "daemon/transport_qemu.cpp",
                 "daemon/usb.cpp",
                 "daemon/usb_ffs.cpp",
-                "daemon/usb_legacy.cpp",
             ]
         },
-        linux_glibc: {
-            srcs: [
-                "daemon/usb_dummy.cpp",
-            ]
+        recovery: {
+            exclude_shared_libs: [
+                "libadb_pairing_auth",
+                "libadb_pairing_connection",
+            ],
         }
     },
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.adbd",
+    ],
+    visibility: [
+        "//bootable/recovery/minadbd",
+        "//system/core/adb",
+    ],
 }
 
 cc_library {
@@ -391,47 +444,39 @@
     ],
 
     static_libs: [
+        "libadbconnection_server",
         "libadbd_core",
+        "libbrotli",
         "libdiagnose_usb",
     ],
 
     shared_libs: [
+        "libadb_crypto",
+        "libadb_pairing_connection",
+        "libadb_protos",
+        "libadb_tls_connection",
         "libasyncio",
         "libbase",
-        "libcrypto",
         "libcrypto_utils",
-        "libcutils",
+        "libcutils_sockets",
+
+        // APEX dependencies.
+        "libadbd_auth",
+        "libadbd_fs",
+        "libcrypto",
         "liblog",
     ],
 
-    product_variables: {
-        debuggable: {
-            required: [
-                "remount",
-            ],
-        },
-    },
-
     target: {
         android: {
             srcs: [
                 "daemon/abb_service.cpp",
                 "daemon/framebuffer_service.cpp",
                 "daemon/mdns.cpp",
-                "daemon/reboot_service.cpp",
-                "daemon/remount_service.cpp",
                 "daemon/restart_service.cpp",
-                "daemon/set_verity_enable_state_service.cpp",
-            ],
-            static_libs: [
-                "libavb_user",
             ],
             shared_libs: [
-                "libbootloader_message",
                 "libmdnssd",
-                "libext4_utils",
-                "libfec",
-                "libfs_mgr",
                 "libselinux",
             ],
         },
@@ -439,45 +484,80 @@
             exclude_srcs: [
                 "daemon/abb_service.cpp",
             ],
+            exclude_shared_libs: [
+                "libadb_pairing_auth",
+                "libadb_pairing_connection",
+            ],
         },
     },
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.adbd",
+    ],
+    visibility: [
+        "//system/core/adb",
+    ],
+
 }
 
 cc_library {
     name: "libadbd",
     defaults: ["adbd_defaults", "host_adbd_supported"],
     recovery_available: true,
+    apex_available: ["com.android.adbd"],
 
-    // Avoid getting duplicate symbol of android::build::GetBuildNumber().
+    // avoid getting duplicate symbol of android::build::getbuildnumber().
     use_version_lib: false,
 
     // libminadbd wants both, as it's used to build native tests.
     compile_multilib: "both",
 
-    // libadbd doesn't build any additional source, but to expose libadbd_core as a shared library.
-    whole_static_libs: [
-        "libadbd_core",
-    ],
-
     shared_libs: [
-        "libadbd_services",
+        "libadb_crypto",
+        "libadb_pairing_connection",
+        "libadb_tls_connection",
         "libasyncio",
         "libbase",
         "libcrypto",
         "libcrypto_utils",
-        "libcutils",
         "liblog",
+        "libselinux",
+
+        // APEX dependencies on the system image.
+        "libadbd_auth",
+        "libadbd_fs",
+        "libadbd_services",
     ],
 
-    export_include_dirs: [
-        "daemon/include",
+    target: {
+        recovery: {
+            exclude_shared_libs: [
+                "libadb_pairing_auth",
+                "libadb_pairing_connection",
+            ],
+        }
+    },
+
+    static_libs: [
+        "libadbd_core",
+        "libbrotli",
+        "libcutils_sockets",
+        "libdiagnose_usb",
+        "libmdnssd",
+    ],
+
+    visibility: [
+        "//bootable/recovery/minadbd",
+        "//system/core/adb",
     ],
 }
 
 cc_binary {
     name: "adbd",
-    defaults: ["adbd_defaults", "host_adbd_supported"],
+    defaults: ["adbd_defaults", "host_adbd_supported", "libadbd_binary_dependencies"],
     recovery_available: true,
+    apex_available: ["com.android.adbd"],
 
     srcs: [
         "daemon/main.cpp",
@@ -492,16 +572,48 @@
         keep_symbols: true,
     },
 
-    shared_libs: [
+    static_libs: [
         "libadbd",
         "libadbd_services",
-        "libbase",
+        "libasyncio",
         "libcap",
-        "libcrypto",
-        "libcutils",
-        "liblog",
         "libminijail",
-        "libselinux",
+        "libssl",
+    ],
+
+    shared_libs: [
+        "libadb_protos",
+        "libadbd_auth",
+    ],
+
+    target: {
+        recovery: {
+            exclude_shared_libs: [
+                "libadb_pairing_auth",
+                "libadb_pairing_connection",
+            ],
+        }
+    },
+}
+
+phony {
+    // Interface between adbd in a module and the system.
+    name: "adbd_system_api",
+    required: [
+        "libadbd_auth",
+        "libadbd_fs",
+        "abb",
+        "reboot",
+        "set-verity-state",
+    ]
+}
+
+phony {
+    name: "adbd_system_api_recovery",
+    required: [
+        "libadbd_auth",
+        "libadbd_fs",
+        "reboot.recovery",
     ],
 }
 
@@ -509,6 +621,7 @@
     name: "abb",
 
     defaults: ["adbd_defaults"],
+    stl: "libc++",
     recovery_available: false,
 
     srcs: [
@@ -541,29 +654,34 @@
 
 cc_test {
     name: "adbd_test",
-    defaults: ["adbd_defaults"],
+
+    defaults: ["adbd_defaults", "libadbd_binary_dependencies"],
+
+    recovery_available: false,
     srcs: libadb_test_srcs + [
         "daemon/services.cpp",
         "daemon/shell_service.cpp",
         "daemon/shell_service_test.cpp",
         "shell_service_protocol.cpp",
         "shell_service_protocol_test.cpp",
+        "mdns_test.cpp",
+    ],
+
+    test_config: "adb_test.xml",
+
+    shared_libs: [
+        "liblog",
     ],
 
     static_libs: [
         "libadbd",
+        "libadbd_auth",
         "libbase",
-        "libbootloader_message",
-        "libcutils",
         "libcrypto_utils",
-        "libcrypto",
-        "libdiagnose_usb",
-        "liblog",
         "libusb",
-        "libmdnssd",
-        "libselinux",
     ],
-    test_suites: ["device-tests"],
+    test_suites: ["device-tests", "mts"],
+    require_root: true,
 }
 
 python_test_host {
@@ -597,10 +715,107 @@
     test_suites: ["general-tests"],
     version: {
         py2: {
-            enabled: true,
-        },
-        py3: {
             enabled: false,
         },
+        py3: {
+            enabled: true,
+        },
     },
 }
+
+// Note: using pipe for xxd to control the variable name generated
+// the default name used by xxd is the path to the input file.
+java_genrule {
+    name: "bin2c_fastdeployagent",
+    out: ["deployagent.inc"],
+    srcs: [":deployagent"],
+    cmd: "(echo 'unsigned char kDeployAgent[] = {' && xxd -i <$(in) && echo '};') > $(out)",
+}
+
+genrule {
+    name: "bin2c_fastdeployagentscript",
+    out: ["deployagentscript.inc"],
+    srcs: ["fastdeploy/deployagent/deployagent.sh"],
+    cmd: "(echo 'unsigned char kDeployAgentScript[] = {' && xxd -i <$(in) && echo '};') > $(out)",
+}
+
+cc_library_host_static {
+    name: "libfastdeploy_host",
+    defaults: ["adb_defaults"],
+    srcs: [
+        "fastdeploy/deploypatchgenerator/apk_archive.cpp",
+        "fastdeploy/deploypatchgenerator/deploy_patch_generator.cpp",
+        "fastdeploy/deploypatchgenerator/patch_utils.cpp",
+        "fastdeploy/proto/ApkEntry.proto",
+    ],
+    static_libs: [
+        "libadb_host",
+        "libandroidfw",
+        "libbase",
+        "libcutils",
+        "libcrypto_utils",
+        "libcrypto",
+        "libdiagnose_usb",
+        "liblog",
+        "libmdnssd",
+        "libusb",
+        "libutils",
+        "libziparchive",
+        "libz",
+    ],
+    proto: {
+        type: "lite",
+        export_proto_headers: true,
+    },
+    target: {
+        windows: {
+            enabled: true,
+            shared_libs: ["AdbWinApi"],
+        },
+    },
+}
+
+cc_test_host {
+    name: "fastdeploy_test",
+    defaults: ["adb_defaults"],
+    srcs: [
+        "fastdeploy/deploypatchgenerator/apk_archive_test.cpp",
+        "fastdeploy/deploypatchgenerator/deploy_patch_generator_test.cpp",
+        "fastdeploy/deploypatchgenerator/patch_utils_test.cpp",
+    ],
+    static_libs: [
+        "libadb_crypto_static",
+        "libadb_host",
+        "libadb_pairing_auth_static",
+        "libadb_pairing_connection_static",
+        "libadb_protos_static",
+        "libadb_tls_connection_static",
+        "libandroidfw",
+        "libbase",
+        "libcutils",
+        "libcrypto_utils",
+        "libcrypto",
+        "libdiagnose_usb",
+        "libfastdeploy_host",
+        "liblog",
+        "libmdnssd",
+        "libprotobuf-cpp-lite",
+        "libssl",
+        "libusb",
+        "libutils",
+        "libziparchive",
+        "libz",
+    ],
+    target: {
+        windows: {
+            enabled: true,
+            shared_libs: ["AdbWinApi"],
+        },
+    },
+    data: [
+        "fastdeploy/testdata/rotating_cube-metadata-release.data",
+        "fastdeploy/testdata/rotating_cube-release.apk",
+        "fastdeploy/testdata/sample.apk",
+        "fastdeploy/testdata/sample.cd",
+    ],
+}
diff --git a/adb/SOCKET-ACTIVATION.txt b/adb/SOCKET-ACTIVATION.txt
new file mode 100644
index 0000000..4ef62ac
--- /dev/null
+++ b/adb/SOCKET-ACTIVATION.txt
@@ -0,0 +1,42 @@
+adb can be configured to work with systemd-style socket activation,
+allowing the daemon to start automatically when the adb control port
+is forwarded across a network. You need two files, placed in the usual
+systemd service directories (e.g., ~/.config/systemd/user for a user
+service).
+
+adb.service:
+
+--- START adb.service CUT HERE ---
+[Unit]
+Description=adb
+After=adb.socket
+Requires=adb.socket
+[Service]
+Type=simple
+# FD 3 is part of the systemd interface
+ExecStart=/path/to/adb server nodaemon -L acceptfd:3
+--- END adb.service CUT HERE ---
+
+--- START adb.socket CUT HERE ---
+[Unit]
+Description=adb
+PartOf=adb.service
+[Socket]
+ListenStream=127.0.0.1:5037
+Accept=no
+[Install]
+WantedBy=sockets.target
+--- END adb.socket CUT HERE ---
+
+After installing the adb service, the adb server will be started
+automatically on any connection to 127.0.0.1:5037 (the default adb
+control port), even after adb kill-server kills the server.
+
+Other "superserver" launcher systems (like macOS launchd) can be
+configured analogously. The important part is that adb be started with
+"server" and "nodaemon" command line arguments and that the listen
+address (passed to -L) name a file descriptor that's ready to
+accept(2) connections and that's already bound to the desired address
+and listening. inetd-style pre-accepted sockets do _not_ work in this
+configuration: the file descriptor passed to acceptfd must be the
+serve socket, not the accepted connection socket.
diff --git a/adb/adb.cpp b/adb/adb.cpp
index 050ba49..c3e9731 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -34,6 +34,7 @@
 #include <condition_variable>
 #include <mutex>
 #include <string>
+#include <string_view>
 #include <thread>
 #include <vector>
 
@@ -52,6 +53,7 @@
 #include "adb_listeners.h"
 #include "adb_unique_fd.h"
 #include "adb_utils.h"
+#include "adb_wifi.h"
 #include "sysdeps/chrono.h"
 #include "transport.h"
 
@@ -60,6 +62,12 @@
 #include <sys/mount.h>
 #include <android-base/properties.h>
 using namespace std::chrono_literals;
+
+#include "daemon/logging.h"
+#endif
+
+#if ADB_HOST
+#include "client/usb.h"
 #endif
 
 std::string adb_version() {
@@ -140,6 +148,9 @@
     case A_CLSE: tag = "CLSE"; break;
     case A_WRTE: tag = "WRTE"; break;
     case A_AUTH: tag = "AUTH"; break;
+    case A_STLS:
+        tag = "STLS";
+        break;
     default: tag = "????"; break;
     }
 
@@ -209,6 +220,15 @@
         android::base::Join(connection_properties, ';').c_str());
 }
 
+void send_tls_request(atransport* t) {
+    D("Calling send_tls_request");
+    apacket* p = get_apacket();
+    p->msg.command = A_STLS;
+    p->msg.arg0 = A_STLS_VERSION;
+    p->msg.data_length = 0;
+    send_packet(p, t);
+}
+
 void send_connect(atransport* t) {
     D("Calling send_connect");
     apacket* cp = get_apacket();
@@ -299,7 +319,16 @@
 #if ADB_HOST
     handle_online(t);
 #else
-    if (!auth_required) {
+    ADB_LOG(Connection) << "received CNXN: version=" << p->msg.arg0 << ", maxdata = " << p->msg.arg1
+                        << ", banner = '" << banner << "'";
+
+    if (t->use_tls) {
+        // We still handshake in TLS mode. If auth_required is disabled,
+        // we'll just not verify the client's certificate. This should be the
+        // first packet the client receives to indicate the new protocol.
+        send_tls_request(t);
+    } else if (!auth_required) {
+        LOG(INFO) << "authentication not required";
         handle_online(t);
         send_connect(t);
     } else {
@@ -323,8 +352,21 @@
     case A_CNXN:  // CONNECT(version, maxdata, "system-id-string")
         handle_new_connection(t, p);
         break;
+    case A_STLS:  // TLS(version, "")
+        t->use_tls = true;
+#if ADB_HOST
+        send_tls_request(t);
+        adb_auth_tls_handshake(t);
+#else
+        adbd_auth_tls_handshake(t);
+#endif
+        break;
 
     case A_AUTH:
+        // All AUTH commands are ignored in TLS mode
+        if (t->use_tls) {
+            break;
+        }
         switch (p->msg.arg0) {
 #if ADB_HOST
             case ADB_AUTH_TOKEN:
@@ -1052,9 +1094,9 @@
         // New transport selection protocol:
         // This is essentially identical to the previous version, except it returns the selected
         // transport id to the caller as well.
-        if (ConsumePrefix(&service, "tport:")) {
+        if (android::base::ConsumePrefix(&service, "tport:")) {
             legacy = false;
-            if (ConsumePrefix(&service, "serial:")) {
+            if (android::base::ConsumePrefix(&service, "serial:")) {
                 serial_storage = service;
                 serial = serial_storage.c_str();
             } else if (service == "usb") {
@@ -1068,7 +1110,7 @@
             // Selection by id is unimplemented, since you obviously already know the transport id
             // you're connecting to.
         } else {
-            if (ConsumePrefix(&service, "transport-id:")) {
+            if (android::base::ConsumePrefix(&service, "transport-id:")) {
                 if (!ParseUint(&transport_id, service)) {
                     SendFail(reply_fd, "invalid transport id");
                     return HostRequestResult::Handled;
@@ -1079,7 +1121,7 @@
                 type = kTransportLocal;
             } else if (service == "transport-any") {
                 type = kTransportAny;
-            } else if (ConsumePrefix(&service, "transport:")) {
+            } else if (android::base::ConsumePrefix(&service, "transport:")) {
                 serial_storage = service;
                 serial = serial_storage.c_str();
             }
@@ -1131,7 +1173,9 @@
 
     if (service == "features") {
         std::string error;
-        atransport* t = acquire_one_transport(type, serial, transport_id, nullptr, &error);
+        atransport* t =
+                s->transport ? s->transport
+                             : acquire_one_transport(type, serial, transport_id, nullptr, &error);
         if (t != nullptr) {
             SendOkay(reply_fd, FeatureSetToString(t->features()));
         } else {
@@ -1164,7 +1208,7 @@
         std::string host;
         int port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
         std::string error;
-        if (address.starts_with("vsock:")) {
+        if (address.starts_with("vsock:") || address.starts_with("localfilesystem:")) {
             serial = address;
         } else if (!android::base::ParseNetAddress(address, &host, &port, &serial, &error)) {
             SendFail(reply_fd, android::base::StringPrintf("couldn't parse '%s': %s",
@@ -1190,7 +1234,9 @@
     // These always report "unknown" rather than the actual error, for scripts.
     if (service == "get-serialno") {
         std::string error;
-        atransport* t = acquire_one_transport(type, serial, transport_id, nullptr, &error);
+        atransport* t =
+                s->transport ? s->transport
+                             : acquire_one_transport(type, serial, transport_id, nullptr, &error);
         if (t) {
             SendOkay(reply_fd, !t->serial.empty() ? t->serial : "unknown");
         } else {
@@ -1200,7 +1246,9 @@
     }
     if (service == "get-devpath") {
         std::string error;
-        atransport* t = acquire_one_transport(type, serial, transport_id, nullptr, &error);
+        atransport* t =
+                s->transport ? s->transport
+                             : acquire_one_transport(type, serial, transport_id, nullptr, &error);
         if (t) {
             SendOkay(reply_fd, !t->devpath.empty() ? t->devpath : "unknown");
         } else {
@@ -1210,7 +1258,9 @@
     }
     if (service == "get-state") {
         std::string error;
-        atransport* t = acquire_one_transport(type, serial, transport_id, nullptr, &error);
+        atransport* t =
+                s->transport ? s->transport
+                             : acquire_one_transport(type, serial, transport_id, nullptr, &error);
         if (t) {
             SendOkay(reply_fd, t->connection_state_name());
         } else {
@@ -1220,7 +1270,7 @@
     }
 
     // Indicates a new emulator instance has started.
-    if (ConsumePrefix(&service, "emulator:")) {
+    if (android::base::ConsumePrefix(&service, "emulator:")) {
         unsigned int port;
         if (!ParseUint(&port, service)) {
           LOG(ERROR) << "received invalid port for emulator: " << service;
@@ -1234,7 +1284,9 @@
 
     if (service == "reconnect") {
         std::string response;
-        atransport* t = acquire_one_transport(type, serial, transport_id, nullptr, &response, true);
+        atransport* t = s->transport ? s->transport
+                                     : acquire_one_transport(type, serial, transport_id, nullptr,
+                                                             &response, true);
         if (t != nullptr) {
             kick_transport(t, true);
             response =
@@ -1246,12 +1298,15 @@
 
     // TODO: Switch handle_forward_request to string_view.
     std::string service_str(service);
-    if (handle_forward_request(
-                service_str.c_str(),
-                [=](std::string* error) {
-                    return acquire_one_transport(type, serial, transport_id, nullptr, error);
-                },
-                reply_fd)) {
+    auto transport_acquirer = [=](std::string* error) {
+        if (s->transport) {
+            return s->transport;
+        } else {
+            std::string error;
+            return acquire_one_transport(type, serial, transport_id, nullptr, &error);
+        }
+    };
+    if (handle_forward_request(service_str.c_str(), transport_acquirer, reply_fd)) {
         return HostRequestResult::Handled;
     }
 
diff --git a/adb/adb.h b/adb/adb.h
index 9324cee..ce12a55 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -26,10 +26,9 @@
 #include <android-base/macros.h>
 
 #include "adb_trace.h"
-#include "fdevent.h"
+#include "fdevent/fdevent.h"
 #include "socket.h"
 #include "types.h"
-#include "usb.h"
 
 constexpr size_t MAX_PAYLOAD_V1 = 4 * 1024;
 constexpr size_t MAX_PAYLOAD = 1024 * 1024;
@@ -44,6 +43,7 @@
 #define A_CLSE 0x45534c43
 #define A_WRTE 0x45545257
 #define A_AUTH 0x48545541
+#define A_STLS 0x534C5453
 
 // ADB protocol version.
 // Version revision:
@@ -53,6 +53,10 @@
 #define A_VERSION_SKIP_CHECKSUM 0x01000001
 #define A_VERSION 0x01000001
 
+// Stream-based TLS protocol version
+#define A_STLS_VERSION_MIN 0x01000000
+#define A_STLS_VERSION 0x01000000
+
 // Used for help/version information.
 #define ADB_VERSION_MAJOR 1
 #define ADB_VERSION_MINOR 0
@@ -134,7 +138,6 @@
 
 /* initialize a transport object's func pointers and state */
 int init_socket_transport(atransport* t, unique_fd s, int port, int local);
-void init_usb_transport(atransport* t, usb_handle* usb);
 
 std::string getEmulatorSerialString(int console_port);
 #if ADB_HOST
@@ -185,14 +188,7 @@
     } while (0)
 #endif
 
-#if ADB_HOST_ON_TARGET
-/* adb and adbd are coexisting on the target, so use 5038 for adb
- * to avoid conflicting with adbd's usage of 5037
- */
-#define DEFAULT_ADB_PORT 5038
-#else
 #define DEFAULT_ADB_PORT 5037
-#endif
 
 #define DEFAULT_ADB_LOCAL_TRANSPORT_PORT 5555
 
@@ -200,7 +196,7 @@
 #define ADB_SUBCLASS 0x42
 #define ADB_PROTOCOL 0x1
 
-void local_init(int port);
+void local_init(const std::string& addr);
 bool local_connect(int port);
 int local_connect_arbitrary_ports(int console_port, int adb_port, std::string* error);
 
@@ -236,6 +232,7 @@
 void handle_offline(atransport* t);
 
 void send_connect(atransport* t);
+void send_tls_request(atransport* t);
 
 void parse_banner(const std::string&, atransport* t);
 
@@ -253,4 +250,5 @@
 // Wait until device scan has completed and every transport is ready, or a timeout elapses.
 void adb_wait_for_device_initialization();
 
+void usb_init();
 #endif
diff --git a/adb/adb_auth.h b/adb/adb_auth.h
index 2be9a76..7e858dc 100644
--- a/adb/adb_auth.h
+++ b/adb/adb_auth.h
@@ -38,10 +38,14 @@
 int adb_auth_keygen(const char* filename);
 int adb_auth_pubkey(const char* filename);
 std::string adb_auth_get_userkey();
+bssl::UniquePtr<EVP_PKEY> adb_auth_get_user_privkey();
 std::deque<std::shared_ptr<RSA>> adb_auth_get_private_keys();
 
 void send_auth_response(const char* token, size_t token_size, atransport* t);
 
+int adb_tls_set_certificate(SSL* ssl);
+void adb_auth_tls_handshake(atransport* t);
+
 #else // !ADB_HOST
 
 extern bool auth_required;
@@ -57,6 +61,10 @@
 
 void send_auth_request(atransport *t);
 
+void adbd_auth_tls_handshake(atransport* t);
+int adbd_tls_verify_cert(X509_STORE_CTX* ctx, std::string* auth_key);
+bssl::UniquePtr<STACK_OF(X509_NAME)> adbd_tls_client_ca_list();
+
 #endif // ADB_HOST
 
 #endif // __ADB_AUTH_H
diff --git a/adb/adb_io.cpp b/adb/adb_io.cpp
index f5cdcb5..bdb8efa 100644
--- a/adb/adb_io.cpp
+++ b/adb/adb_io.cpp
@@ -34,7 +34,7 @@
 #include "adb_utils.h"
 #include "sysdeps.h"
 
-bool SendProtocolString(int fd, std::string_view s) {
+bool SendProtocolString(borrowed_fd fd, std::string_view s) {
     unsigned int length = s.size();
     if (length > MAX_PAYLOAD - 4) {
         errno = EMSGSIZE;
@@ -47,7 +47,7 @@
     return WriteFdExactly(fd, str);
 }
 
-bool ReadProtocolString(int fd, std::string* s, std::string* error) {
+bool ReadProtocolString(borrowed_fd fd, std::string* s, std::string* error) {
     char buf[5];
     if (!ReadFdExactly(fd, buf, 4)) {
         *error = perror_str("protocol fault (couldn't read status length)");
@@ -65,57 +65,57 @@
     return true;
 }
 
-bool SendOkay(int fd) {
+bool SendOkay(borrowed_fd fd) {
     return WriteFdExactly(fd, "OKAY", 4);
 }
 
-bool SendFail(int fd, std::string_view reason) {
+bool SendFail(borrowed_fd fd, std::string_view reason) {
     return WriteFdExactly(fd, "FAIL", 4) && SendProtocolString(fd, reason);
 }
 
-bool ReadFdExactly(int fd, void* buf, size_t len) {
+bool ReadFdExactly(borrowed_fd fd, void* buf, size_t len) {
     char* p = reinterpret_cast<char*>(buf);
 
     size_t len0 = len;
 
-    D("readx: fd=%d wanted=%zu", fd, len);
+    D("readx: fd=%d wanted=%zu", fd.get(), len);
     while (len > 0) {
         int r = adb_read(fd, p, len);
         if (r > 0) {
             len -= r;
             p += r;
         } else if (r == -1) {
-            D("readx: fd=%d error %d: %s", fd, errno, strerror(errno));
+            D("readx: fd=%d error %d: %s", fd.get(), errno, strerror(errno));
             return false;
         } else {
-            D("readx: fd=%d disconnected", fd);
+            D("readx: fd=%d disconnected", fd.get());
             errno = 0;
             return false;
         }
     }
 
-    VLOG(RWX) << "readx: fd=" << fd << " wanted=" << len0 << " got=" << (len0 - len)
-              << " " << dump_hex(reinterpret_cast<const unsigned char*>(buf), len0);
+    VLOG(RWX) << "readx: fd=" << fd.get() << " wanted=" << len0 << " got=" << (len0 - len) << " "
+              << dump_hex(reinterpret_cast<const unsigned char*>(buf), len0);
 
     return true;
 }
 
-bool WriteFdExactly(int fd, const void* buf, size_t len) {
+bool WriteFdExactly(borrowed_fd fd, const void* buf, size_t len) {
     const char* p = reinterpret_cast<const char*>(buf);
     int r;
 
-    VLOG(RWX) << "writex: fd=" << fd << " len=" << len
-              << " " << dump_hex(reinterpret_cast<const unsigned char*>(buf), len);
+    VLOG(RWX) << "writex: fd=" << fd.get() << " len=" << len << " "
+              << dump_hex(reinterpret_cast<const unsigned char*>(buf), len);
 
     while (len > 0) {
         r = adb_write(fd, p, len);
         if (r == -1) {
-            D("writex: fd=%d error %d: %s", fd, errno, strerror(errno));
+            D("writex: fd=%d error %d: %s", fd.get(), errno, strerror(errno));
             if (errno == EAGAIN) {
                 std::this_thread::yield();
                 continue;
             } else if (errno == EPIPE) {
-                D("writex: fd=%d disconnected", fd);
+                D("writex: fd=%d disconnected", fd.get());
                 errno = 0;
                 return false;
             } else {
@@ -129,15 +129,15 @@
     return true;
 }
 
-bool WriteFdExactly(int fd, const char* str) {
+bool WriteFdExactly(borrowed_fd fd, const char* str) {
     return WriteFdExactly(fd, str, strlen(str));
 }
 
-bool WriteFdExactly(int fd, const std::string& str) {
+bool WriteFdExactly(borrowed_fd fd, const std::string& str) {
     return WriteFdExactly(fd, str.c_str(), str.size());
 }
 
-bool WriteFdFmt(int fd, const char* fmt, ...) {
+bool WriteFdFmt(borrowed_fd fd, const char* fmt, ...) {
     std::string str;
 
     va_list ap;
@@ -148,7 +148,7 @@
     return WriteFdExactly(fd, str);
 }
 
-bool ReadOrderlyShutdown(int fd) {
+bool ReadOrderlyShutdown(borrowed_fd fd) {
     char buf[16];
 
     // Only call this function if you're sure that the peer does
@@ -178,7 +178,7 @@
         // data. We don't repeatedly call adb_read() until we get zero because
         // we don't know how long that would take, but we do know that the
         // caller wants to close the socket soon.
-        VLOG(RWX) << "ReadOrderlyShutdown(" << fd << ") unexpectedly read "
+        VLOG(RWX) << "ReadOrderlyShutdown(" << fd.get() << ") unexpectedly read "
                   << dump_hex(buf, result);
         // Shutdown the socket to prevent the caller from reading or writing to
         // it which doesn't make sense if we just read and discarded some data.
diff --git a/adb/adb_io.h b/adb/adb_io.h
index d6e65d8..9628946 100644
--- a/adb/adb_io.h
+++ b/adb/adb_io.h
@@ -25,16 +25,16 @@
 #include "adb_unique_fd.h"
 
 // Sends the protocol "OKAY" message.
-bool SendOkay(int fd);
+bool SendOkay(borrowed_fd fd);
 
 // Sends the protocol "FAIL" message, with the given failure reason.
-bool SendFail(int fd, std::string_view reason);
+bool SendFail(borrowed_fd fd, std::string_view reason);
 
 // Writes a protocol-format string; a four hex digit length followed by the string data.
-bool SendProtocolString(int fd, std::string_view s);
+bool SendProtocolString(borrowed_fd fd, std::string_view s);
 
 // Reads a protocol-format string; a four hex digit length followed by the string data.
-bool ReadProtocolString(int fd, std::string* s, std::string* error);
+bool ReadProtocolString(borrowed_fd fd, std::string* s, std::string* error);
 
 // Reads exactly len bytes from fd into buf.
 //
@@ -42,7 +42,7 @@
 // were read. If EOF was found, errno will be set to 0.
 //
 // If this function fails, the contents of buf are undefined.
-bool ReadFdExactly(int fd, void* buf, size_t len);
+bool ReadFdExactly(borrowed_fd fd, void* buf, size_t len);
 
 // Given a client socket, wait for orderly/graceful shutdown. Call this:
 //
@@ -60,19 +60,19 @@
 // connect()s from the client to fail with WSAEADDRINUSE on Windows.
 // Returns true if it is sure that orderly/graceful shutdown has occurred with
 // no additional data read from the server.
-bool ReadOrderlyShutdown(int fd);
+bool ReadOrderlyShutdown(borrowed_fd fd);
 
 // Writes exactly len bytes from buf to fd.
 //
 // Returns false if there is an error or if the fd was closed before the write
 // completed. If the other end of the fd (such as in a socket, pipe, or fifo),
 // is closed, errno will be set to 0.
-bool WriteFdExactly(int fd, const void* buf, size_t len);
+bool WriteFdExactly(borrowed_fd fd, const void* buf, size_t len);
 
 // Same as above, but for strings.
-bool WriteFdExactly(int fd, const char* s);
-bool WriteFdExactly(int fd, const std::string& s);
+bool WriteFdExactly(borrowed_fd fd, const char* s);
+bool WriteFdExactly(borrowed_fd fd, const std::string& s);
 
 // Same as above, but formats the string to send.
-bool WriteFdFmt(int fd, const char* fmt, ...) __attribute__((__format__(__printf__, 2, 3)));
+bool WriteFdFmt(borrowed_fd fd, const char* fmt, ...) __attribute__((__format__(__printf__, 2, 3)));
 #endif /* ADB_IO_H */
diff --git a/adb/adb_listeners_test.cpp b/adb/adb_listeners_test.cpp
index b697769..a7e2dea 100644
--- a/adb/adb_listeners_test.cpp
+++ b/adb/adb_listeners_test.cpp
@@ -21,7 +21,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 
-#include "fdevent.h"
+#include "fdevent/fdevent.h"
 #include "sysdeps.h"
 #include "transport.h"
 
diff --git a/adb/adb_mdns.h b/adb/adb_mdns.h
index 2e544d7..3111248 100644
--- a/adb/adb_mdns.h
+++ b/adb/adb_mdns.h
@@ -17,6 +17,76 @@
 #ifndef _ADB_MDNS_H_
 #define _ADB_MDNS_H_
 
-const char* kADBServiceType = "_adb._tcp";
+#include <android-base/macros.h>
+
+// The rules for Service Names [RFC6335] state that they may be no more
+// than fifteen characters long (not counting the mandatory underscore),
+// consisting of only letters, digits, and hyphens, must begin and end
+// with a letter or digit, must not contain consecutive hyphens, and
+// must contain at least one letter.
+#define ADB_MDNS_SERVICE_TYPE "adb"
+#define ADB_MDNS_TLS_PAIRING_TYPE "adb-tls-pairing"
+#define ADB_MDNS_TLS_CONNECT_TYPE "adb-tls-connect"
+
+const int kADBTransportServiceRefIndex = 0;
+const int kADBSecurePairingServiceRefIndex = 1;
+const int kADBSecureConnectServiceRefIndex = 2;
+
+// Each ADB Secure service advertises with a TXT record indicating the version
+// using a key/value pair per RFC 6763 (https://tools.ietf.org/html/rfc6763).
+//
+// The first key/value pair is always the version of the protocol.
+// There may be more key/value pairs added after.
+//
+// The version is purposely represented as the single letter "v" due to the
+// need to minimize DNS traffic. The version starts at 1.  With each breaking
+// protocol change, the version is incremented by 1.
+//
+// Newer adb clients/daemons need to recognize and either reject
+// or be backward-compatible with older verseions if there is a mismatch.
+//
+// Relevant sections:
+//
+// """
+// 6.4.  Rules for Keys in DNS-SD Key/Value Pairs
+//
+// The key MUST be at least one character.  DNS-SD TXT record strings
+// beginning with an '=' character (i.e., the key is missing) MUST be
+// silently ignored.
+//
+// ...
+//
+// 6.5.  Rules for Values in DNS-SD Key/Value Pairs
+//
+// If there is an '=' in a DNS-SD TXT record string, then everything
+// after the first '=' to the end of the string is the value.  The value
+// can contain any eight-bit values including '='.
+// """
+
+#define ADB_SECURE_SERVICE_VERSION_TXT_RECORD(ver) ("v=" #ver)
+
+// Client/service versions are initially defined to be matching,
+// but may go out of sync as different clients and services
+// try to talk to each other.
+#define ADB_SECURE_SERVICE_VERSION 1
+#define ADB_SECURE_CLIENT_VERSION ADB_SECURE_SERVICE_VERSION
+
+const char* kADBSecurePairingServiceTxtRecord =
+        ADB_SECURE_SERVICE_VERSION_TXT_RECORD(ADB_SECURE_SERVICE_VERSION);
+const char* kADBSecureConnectServiceTxtRecord =
+        ADB_SECURE_SERVICE_VERSION_TXT_RECORD(ADB_SECURE_SERVICE_VERSION);
+
+#define ADB_FULL_MDNS_SERVICE_TYPE(atype) ("_" atype "._tcp")
+const char* kADBDNSServices[] = {ADB_FULL_MDNS_SERVICE_TYPE(ADB_MDNS_SERVICE_TYPE),
+                                 ADB_FULL_MDNS_SERVICE_TYPE(ADB_MDNS_TLS_PAIRING_TYPE),
+                                 ADB_FULL_MDNS_SERVICE_TYPE(ADB_MDNS_TLS_CONNECT_TYPE)};
+
+const char* kADBDNSServiceTxtRecords[] = {
+        nullptr,
+        kADBSecurePairingServiceTxtRecord,
+        kADBSecureConnectServiceTxtRecord,
+};
+
+const int kNumADBDNSServices = arraysize(kADBDNSServices);
 
 #endif
diff --git a/adb/adb_test.xml b/adb/adb_test.xml
new file mode 100644
index 0000000..cc3302d
--- /dev/null
+++ b/adb/adb_test.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- This test config file is auto-generated. -->
+<configuration description="Runs adbd_test.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-native" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer">
+    </target_preparer>
+
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="adbd_test->/data/local/tmp/adbd_test" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="adbd_test" />
+    </test>
+
+    <object type="module_controller" class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
+      <option name="mainline-module-package-name" value="com.google.android.adbd" />
+    </object>
+</configuration>
diff --git a/adb/adb_trace.cpp b/adb/adb_trace.cpp
index 80f146c..cea24fe 100644
--- a/adb/adb_trace.cpp
+++ b/adb/adb_trace.cpp
@@ -118,22 +118,22 @@
         return;
     }
 
-    std::unordered_map<std::string, int> trace_flags = {
-        {"1", -1},
-        {"all", -1},
-        {"adb", ADB},
-        {"sockets", SOCKETS},
-        {"packets", PACKETS},
-        {"rwx", RWX},
-        {"usb", USB},
-        {"sync", SYNC},
-        {"sysdeps", SYSDEPS},
-        {"transport", TRANSPORT},
-        {"jdwp", JDWP},
-        {"services", SERVICES},
-        {"auth", AUTH},
-        {"fdevent", FDEVENT},
-        {"shell", SHELL}};
+    std::unordered_map<std::string, int> trace_flags = {{"1", -1},
+                                                        {"all", -1},
+                                                        {"adb", ADB},
+                                                        {"sockets", SOCKETS},
+                                                        {"packets", PACKETS},
+                                                        {"rwx", RWX},
+                                                        {"usb", USB},
+                                                        {"sync", SYNC},
+                                                        {"sysdeps", SYSDEPS},
+                                                        {"transport", TRANSPORT},
+                                                        {"jdwp", JDWP},
+                                                        {"services", SERVICES},
+                                                        {"auth", AUTH},
+                                                        {"fdevent", FDEVENT},
+                                                        {"shell", SHELL},
+                                                        {"incremental", INCREMENTAL}};
 
     std::vector<std::string> elements = android::base::Split(trace_setting, " ");
     for (const auto& elem : elements) {
diff --git a/adb/adb_trace.h b/adb/adb_trace.h
index 1d2c8c7..3421a02 100644
--- a/adb/adb_trace.h
+++ b/adb/adb_trace.h
@@ -25,19 +25,20 @@
  * the adb_trace_init() function implemented in adb_trace.cpp.
  */
 enum AdbTrace {
-    ADB = 0,   /* 0x001 */
+    ADB = 0, /* 0x001 */
     SOCKETS,
     PACKETS,
     TRANSPORT,
-    RWX,       /* 0x010 */
+    RWX, /* 0x010 */
     USB,
     SYNC,
     SYSDEPS,
-    JDWP,      /* 0x100 */
+    JDWP, /* 0x100 */
     SERVICES,
     AUTH,
     FDEVENT,
-    SHELL
+    SHELL,
+    INCREMENTAL,
 };
 
 #define VLOG_IS_ON(TAG) \
@@ -58,11 +59,4 @@
 void adb_trace_init(char**);
 void adb_trace_enable(AdbTrace trace_tag);
 
-// Include <atomic> before stdatomic.h (introduced in cutils/trace.h) to avoid compile error.
-#include <atomic>
-
-#define ATRACE_TAG ATRACE_TAG_ADB
-#include <cutils/trace.h>
-#include <utils/Trace.h>
-
 #endif /* __ADB_TRACE_H */
diff --git a/adb/adb_unique_fd.h b/adb/adb_unique_fd.h
index d47213d..b6c910a 100644
--- a/adb/adb_unique_fd.h
+++ b/adb/adb_unique_fd.h
@@ -32,6 +32,8 @@
 using unique_fd = android::base::unique_fd;
 #endif
 
+using android::base::borrowed_fd;
+
 template <typename T>
 int adb_close(const android::base::unique_fd_impl<T>&)
         __attribute__((__unavailable__("adb_close called on unique_fd")));
diff --git a/adb/adb_utils.cpp b/adb/adb_utils.cpp
index 9791769..d1910f1 100644
--- a/adb/adb_utils.cpp
+++ b/adb/adb_utils.cpp
@@ -234,15 +234,15 @@
 
 #if !defined(_WIN32)
 // Windows version provided in sysdeps_win32.cpp
-bool set_file_block_mode(int fd, bool block) {
-    int flags = fcntl(fd, F_GETFL, 0);
+bool set_file_block_mode(borrowed_fd fd, bool block) {
+    int flags = fcntl(fd.get(), F_GETFL, 0);
     if (flags == -1) {
-        PLOG(ERROR) << "failed to fcntl(F_GETFL) for fd " << fd;
+        PLOG(ERROR) << "failed to fcntl(F_GETFL) for fd " << fd.get();
         return false;
     }
     flags = block ? (flags & ~O_NONBLOCK) : (flags | O_NONBLOCK);
-    if (fcntl(fd, F_SETFL, flags) != 0) {
-        PLOG(ERROR) << "failed to fcntl(F_SETFL) for fd " << fd << ", flags " << flags;
+    if (fcntl(fd.get(), F_SETFL, flags) != 0) {
+        PLOG(ERROR) << "failed to fcntl(F_SETFL) for fd " << fd.get() << ", flags " << flags;
         return false;
     }
     return true;
@@ -320,6 +320,10 @@
 }
 
 std::string GetLogFilePath() {
+    // https://issuetracker.google.com/112588493
+    const char* path = getenv("ANDROID_ADB_LOG_PATH");
+    if (path) return path;
+
 #if defined(_WIN32)
     const char log_name[] = "adb.log";
     WCHAR temp_path[MAX_PATH];
diff --git a/adb/adb_utils.h b/adb/adb_utils.h
index 5800a62..66cba12 100644
--- a/adb/adb_utils.h
+++ b/adb/adb_utils.h
@@ -16,6 +16,7 @@
 
 #pragma once
 
+#include <charconv>
 #include <condition_variable>
 #include <mutex>
 #include <string>
@@ -26,6 +27,7 @@
 #include <android-base/macros.h>
 
 #include "adb.h"
+#include "adb_unique_fd.h"
 
 void close_stdin();
 
@@ -51,7 +53,7 @@
 [[noreturn]] void error_exit(const char* fmt, ...) __attribute__((__format__(__printf__, 1, 2)));
 [[noreturn]] void perror_exit(const char* fmt, ...) __attribute__((__format__(__printf__, 1, 2)));
 
-bool set_file_block_mode(int fd, bool block);
+bool set_file_block_mode(borrowed_fd fd, bool block);
 
 // Given forward/reverse targets, returns true if they look sane. If an error is found, fills
 // |error| and returns false.
@@ -111,41 +113,17 @@
 // Base-10 stroll on a string_view.
 template <typename T>
 inline bool ParseUint(T* result, std::string_view str, std::string_view* remaining = nullptr) {
-    if (str.empty() || !isdigit(str[0])) {
+    T value;
+    const auto res = std::from_chars(str.begin(), str.end(), value);
+    if (res.ec != std::errc{}) {
         return false;
     }
-
-    T value = 0;
-    std::string_view::iterator it;
-    constexpr T max = std::numeric_limits<T>::max();
-    for (it = str.begin(); it != str.end() && isdigit(*it); ++it) {
-        if (value > max / 10) {
-            return false;
-        }
-
-        value *= 10;
-
-        T digit = *it - '0';
-        if (value > max - digit) {
-            return false;
-        }
-
-        value += digit;
+    if (res.ptr != str.end() && !remaining) {
+        return false;
+    }
+    if (remaining) {
+        *remaining = std::string_view(res.ptr, str.end() - res.ptr);
     }
     *result = value;
-    if (remaining) {
-        *remaining = str.substr(it - str.begin());
-    } else {
-      return it == str.end();
-    }
-
     return true;
 }
-
-inline bool ConsumePrefix(std::string_view* str, std::string_view prefix) {
-  if (str->starts_with(prefix)) {
-    str->remove_prefix(prefix.size());
-    return true;
-  }
-  return false;
-}
diff --git a/adb/adb_utils_test.cpp b/adb/adb_utils_test.cpp
index bd676c2..cdca3aa 100644
--- a/adb/adb_utils_test.cpp
+++ b/adb/adb_utils_test.cpp
@@ -149,13 +149,13 @@
 TEST(adb_utils, set_file_block_mode) {
     unique_fd fd(adb_open("/dev/null", O_RDWR | O_APPEND));
     ASSERT_GE(fd, 0);
-    int flags = fcntl(fd, F_GETFL, 0);
+    int flags = fcntl(fd.get(), F_GETFL, 0);
     ASSERT_EQ(O_RDWR | O_APPEND, (flags & (O_RDWR | O_APPEND)));
     ASSERT_TRUE(set_file_block_mode(fd, false));
-    int new_flags = fcntl(fd, F_GETFL, 0);
+    int new_flags = fcntl(fd.get(), F_GETFL, 0);
     ASSERT_EQ(flags | O_NONBLOCK, new_flags);
     ASSERT_TRUE(set_file_block_mode(fd, true));
-    new_flags = fcntl(fd, F_GETFL, 0);
+    new_flags = fcntl(fd.get(), F_GETFL, 0);
     ASSERT_EQ(flags, new_flags);
 }
 #endif
diff --git a/adb/adb_wifi.h b/adb/adb_wifi.h
new file mode 100644
index 0000000..585748c
--- /dev/null
+++ b/adb/adb_wifi.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+#include "adb.h"
+
+#if ADB_HOST
+
+void adb_wifi_init(void);
+void adb_wifi_pair_device(const std::string& host, const std::string& password,
+                          std::string& response);
+bool adb_wifi_is_known_host(const std::string& host);
+
+#else  // !ADB_HOST
+
+struct AdbdAuthContext;
+
+void adbd_wifi_init(AdbdAuthContext* ctx);
+void adbd_wifi_secure_connect(atransport* t);
+
+#endif
diff --git a/adb/apex/Android.bp b/adb/apex/Android.bp
new file mode 100644
index 0000000..ddb17da
--- /dev/null
+++ b/adb/apex/Android.bp
@@ -0,0 +1,55 @@
+apex_defaults {
+    name: "com.android.adbd-defaults",
+    updatable: true,
+    min_sdk_version: "R",
+
+    binaries: ["adbd"],
+    compile_multilib: "both",
+    multilib: {
+        both: {
+            native_shared_libs: [
+                "libadb_pairing_auth",
+                "libadb_pairing_connection",
+                "libadb_pairing_server",
+                "libadbconnection_client",
+            ],
+        },
+    },
+    prebuilts: ["com.android.adbd.init.rc"],
+
+    key: "com.android.adbd.key",
+    certificate: ":com.android.adbd.certificate",
+}
+
+apex {
+    name: "com.android.adbd",
+    defaults: ["com.android.adbd-defaults"],
+    manifest: "apex_manifest.json",
+}
+
+// adbd apex with INT_MAX version code, to allow for upgrade/rollback testing.
+apex_test {
+    name: "test_com.android.adbd",
+    defaults: ["com.android.adbd-defaults"],
+    manifest: "test_apex_manifest.json",
+    file_contexts: ":com.android.adbd-file_contexts",
+    installable: false,
+}
+
+prebuilt_etc {
+    name: "com.android.adbd.init.rc",
+    src: "adbd.rc",
+    filename: "init.rc",
+    installable: false,
+}
+
+apex_key {
+    name: "com.android.adbd.key",
+    public_key: "com.android.adbd.avbpubkey",
+    private_key: "com.android.adbd.pem",
+}
+
+android_app_certificate {
+    name: "com.android.adbd.certificate",
+    certificate: "com.android.adbd",
+}
diff --git a/adb/apex/adbd.rc b/adb/apex/adbd.rc
new file mode 100644
index 0000000..9cb072b
--- /dev/null
+++ b/adb/apex/adbd.rc
@@ -0,0 +1,6 @@
+service adbd /apex/com.android.adbd/bin/adbd --root_seclabel=u:r:su:s0
+    class core
+    socket adbd seqpacket 660 system system
+    disabled
+    override
+    seclabel u:r:adbd:s0
diff --git a/adb/apex/apex_manifest.json b/adb/apex/apex_manifest.json
new file mode 100644
index 0000000..0444409
--- /dev/null
+++ b/adb/apex/apex_manifest.json
@@ -0,0 +1,4 @@
+{
+  "name": "com.android.adbd",
+  "version": 300000000
+}
diff --git a/adb/apex/com.android.adbd.avbpubkey b/adb/apex/com.android.adbd.avbpubkey
new file mode 100644
index 0000000..06235bd
--- /dev/null
+++ b/adb/apex/com.android.adbd.avbpubkey
Binary files differ
diff --git a/adb/apex/com.android.adbd.pem b/adb/apex/com.android.adbd.pem
new file mode 100644
index 0000000..2c9a860
--- /dev/null
+++ b/adb/apex/com.android.adbd.pem
@@ -0,0 +1,51 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIJKQIBAAKCAgEAwUmO4l/ZdLhmBcBtpwDjih6z6bC7iZDPAVgnFVnYuYDRlVDA
+9OCDwv02Wwc/YCNzON7vt7JBk3o9wyJZpqY9HR1PUjk2DJa/wHtxbskmLcqsvcoh
+wZxmMkgx1mFyni/vQ0tCjjxYmDcnpoVmSntoPG4LBTZRwbgE2roYSuEi7q88Z9+t
+cFiQ5x7MqVTzUFsi1E+rpsxRaTt6Ly9DO71yR1gMTqONsSgmFm8f2HhUCiQzRh7H
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+4/Y7lyaelW0FL+x3CR27wlIxLyIf/JfUNv/cFO/O2MHrDHYdHtCbvg8vpq1MZtDN
++gJIkYQNUfBEtGS4SkH3WWfNet3bcL5yFx5IVdwCY+n635jPA1fvr1vcIiKnyGUm
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+sspOUbOLfBOwxdCCc9JUxz5KggKWcDcTqX25M0mv09rpuCxIEg8lez1Ax0if
+-----END RSA PRIVATE KEY-----
diff --git a/adb/apex/com.android.adbd.pk8 b/adb/apex/com.android.adbd.pk8
new file mode 100644
index 0000000..cdddc3f
--- /dev/null
+++ b/adb/apex/com.android.adbd.pk8
Binary files differ
diff --git a/adb/apex/com.android.adbd.x509.pem b/adb/apex/com.android.adbd.x509.pem
new file mode 100644
index 0000000..bb85c1d
--- /dev/null
+++ b/adb/apex/com.android.adbd.x509.pem
@@ -0,0 +1,35 @@
+-----BEGIN CERTIFICATE-----
+MIIGHzCCBAegAwIBAgIUW8npFHXBP+wsEAesGMBxaV7TScAwDQYJKoZIhvcNAQEL
+BQAwgZ0xCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxpZm9ybmlhMRYwFAYDVQQH
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+bmRyb2lkQGFuZHJvaWQuY29tMCAXDTE5MDgxNTE5MzkxM1oYDzQ3NTcwNzExMTkz
+OTEzWjCBnTELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNV
+BAcMDU1vdW50YWluIFZpZXcxEDAOBgNVBAoMB0FuZHJvaWQxEDAOBgNVBAsMB0Fu
+ZHJvaWQxGTAXBgNVBAMMEGNvbS5hbmRyb2lkLmFkYmQxIjAgBgkqhkiG9w0BCQEW
+E2FuZHJvaWRAYW5kcm9pZC5jb20wggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIK
+AoICAQC6zbUeWi5vNA6vCC4FBrJQ9re4UexP6TabsDYvWpFBoCluvMkT2ZRmpXMF
+W7EzQ5VmuUvZgLYVHuJmnvHIV3uaRc2VE1SV+spjWTRt+6DtsAN7irR5K66POWMp
++tr5hASdQBVOJdebimsepy0pH6sXREvanrrFzkSM/2Ho0unlwWJ5Y4jcnvdkVHI5
+Ks0vifLmX4y5mYgv1dcXYWzyYx39f8HyePv0cjRhYXiIEYZ49KWU4MjryvQe/mAu
+MQuMp901BLps2W1+oKyPPA4DV69KUXgF66RFfsjjkJJ/CSeQGzTuez+UWzFk3Duc
+6MmbiL1LTki3vyyVtjW1rYFO2s+M6Pa5NZWHgA55uUxiJ987WPyK9lWnMsY6YeKa
+FDBfS1JUzXGPzVncgM7LLvzAEibLdhjII88NsJvzPoHK0SluSn+E7t7iGO1fTjkD
+Js94iUJAp8OQ4GwkcTVgtEAR+NXzownNjHJ6qpiq6tXRqXdBqSat/glf01AgNDtz
+9AGeW7Mz6FqTdOzg3U4lu77+CGd3SZTuQk8C8PUDNhqhQX5H2qhr90bakGaXuYfE
+rWFzIjrVdJIznV1BimOCay5HyyHab4FWlVhAvslEQb2BpHRyi2lhe0laupOpmN44
+LzfjFM18bi2GashIi2OQuYDyAeT5mGtR2g8mC7g44H6dH+wTfQIDAQABo1MwUTAd
+BgNVHQ4EFgQU7lyyxPO5SOOh9a5O0l4+RjckcgcwHwYDVR0jBBgwFoAU7lyyxPO5
+SOOh9a5O0l4+RjckcgcwDwYDVR0TAQH/BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOC
+AgEAStsOy8bkbZg/Ygx47bPkLSz0cJIvATxTChUGOabkz+brLis88ABVWVP0IXps
+tlLlZR5cjXBJguE7GJXzKPWzQZuB8+YwcGHG6QDFpfdMeGrxPDhwNfGy236ArVnx
+K0v1IIxoZRZ0P7aubk3xwUAPgsmT5ayZCKu+dqlEy5B6ioKEsr7Y2RRT/8ifERNm
+cjS9AhcyWrp4R3cjy2iA/RpdsPFwE5ac3I+GtUB4D2up5aDMsy85i9t2/1kuTUaA
+9UHwGXCpcqP8f8BqeLzuxDzYkAvkntlNxbXn1cbn+dTRIOCBoDbtSeqtxhWooOUH
+RQROeRsB7iicdYJJRge0+WyR+216AKUSQPE6/rT0Ifr06ZRwi22/YyySpwuO3SNA
++yWffh+f4h31Dz+p6pu8wjbMDkq4LnCWyjLwfF/yhvWhwwm5+KPAEhvJABeHQc+3
+cslOC9dlXJm9sPoUC7ghmUiFsCmN2hIzQrr2QoK0Obh0AGexOvOAw9cqtOdZQncB
+bqC8c4sVYScVxwDWkg0lNfRMC5boPjBsl7+M2CC1ukgVpXTyDOEjMWILrBXfYCDX
+unBH3kbKQOfL5RT0nE1Lkt1rn5qAWMJg4mvS4QuIurbRtEoj3QYQadF9md4qJXs0
+TvqvY8iEC4xrWU2SQn1K3PutXgaLP9/b6Cy1SBrhBX+AC5s=
+-----END CERTIFICATE-----
diff --git a/adb/apex/test_apex_manifest.json b/adb/apex/test_apex_manifest.json
new file mode 100644
index 0000000..7131977
--- /dev/null
+++ b/adb/apex/test_apex_manifest.json
@@ -0,0 +1,4 @@
+{
+  "name": "com.android.adbd",
+  "version": 2147483647
+}
diff --git a/adb/brotli_utils.h b/adb/brotli_utils.h
new file mode 100644
index 0000000..c5be73d
--- /dev/null
+++ b/adb/brotli_utils.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <span>
+
+#include <brotli/decode.h>
+#include <brotli/encode.h>
+
+#include "types.h"
+
+enum class BrotliDecodeResult {
+    Error,
+    Done,
+    NeedInput,
+    MoreOutput,
+};
+
+struct BrotliDecoder {
+    explicit BrotliDecoder(std::span<char> output_buffer)
+        : output_buffer_(output_buffer),
+          decoder_(BrotliDecoderCreateInstance(nullptr, nullptr, nullptr),
+                   BrotliDecoderDestroyInstance) {}
+
+    void Append(Block&& block) { input_buffer_.append(std::move(block)); }
+
+    BrotliDecodeResult Decode(std::span<char>* output) {
+        size_t available_in = input_buffer_.front_size();
+        const uint8_t* next_in = reinterpret_cast<const uint8_t*>(input_buffer_.front_data());
+
+        size_t available_out = output_buffer_.size();
+        uint8_t* next_out = reinterpret_cast<uint8_t*>(output_buffer_.data());
+
+        BrotliDecoderResult r = BrotliDecoderDecompressStream(
+                decoder_.get(), &available_in, &next_in, &available_out, &next_out, nullptr);
+
+        size_t bytes_consumed = input_buffer_.front_size() - available_in;
+        input_buffer_.drop_front(bytes_consumed);
+
+        size_t bytes_emitted = output_buffer_.size() - available_out;
+        *output = std::span<char>(output_buffer_.data(), bytes_emitted);
+
+        switch (r) {
+            case BROTLI_DECODER_RESULT_SUCCESS:
+                return BrotliDecodeResult::Done;
+            case BROTLI_DECODER_RESULT_ERROR:
+                return BrotliDecodeResult::Error;
+            case BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT:
+                // Brotli guarantees as one of its invariants that if it returns NEEDS_MORE_INPUT,
+                // it will consume the entire input buffer passed in, so we don't have to worry
+                // about bytes left over in the front block with more input remaining.
+                return BrotliDecodeResult::NeedInput;
+            case BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT:
+                return BrotliDecodeResult::MoreOutput;
+        }
+    }
+
+  private:
+    IOVector input_buffer_;
+    std::span<char> output_buffer_;
+    std::unique_ptr<BrotliDecoderState, void (*)(BrotliDecoderState*)> decoder_;
+};
+
+enum class BrotliEncodeResult {
+    Error,
+    Done,
+    NeedInput,
+    MoreOutput,
+};
+
+template <size_t OutputBlockSize>
+struct BrotliEncoder {
+    explicit BrotliEncoder()
+        : output_block_(OutputBlockSize),
+          output_bytes_left_(OutputBlockSize),
+          encoder_(BrotliEncoderCreateInstance(nullptr, nullptr, nullptr),
+                   BrotliEncoderDestroyInstance) {
+        BrotliEncoderSetParameter(encoder_.get(), BROTLI_PARAM_QUALITY, 1);
+    }
+
+    void Append(Block input) { input_buffer_.append(std::move(input)); }
+    void Finish() { finished_ = true; }
+
+    BrotliEncodeResult Encode(Block* output) {
+        output->clear();
+        while (true) {
+            size_t available_in = input_buffer_.front_size();
+            const uint8_t* next_in = reinterpret_cast<const uint8_t*>(input_buffer_.front_data());
+
+            size_t available_out = output_bytes_left_;
+            uint8_t* next_out = reinterpret_cast<uint8_t*>(output_block_.data() +
+                                                           (OutputBlockSize - output_bytes_left_));
+
+            BrotliEncoderOperation op = BROTLI_OPERATION_PROCESS;
+            if (finished_) {
+                op = BROTLI_OPERATION_FINISH;
+            }
+
+            if (!BrotliEncoderCompressStream(encoder_.get(), op, &available_in, &next_in,
+                                             &available_out, &next_out, nullptr)) {
+                return BrotliEncodeResult::Error;
+            }
+
+            size_t bytes_consumed = input_buffer_.front_size() - available_in;
+            input_buffer_.drop_front(bytes_consumed);
+
+            output_bytes_left_ = available_out;
+
+            if (BrotliEncoderIsFinished(encoder_.get())) {
+                output_block_.resize(OutputBlockSize - output_bytes_left_);
+                *output = std::move(output_block_);
+                return BrotliEncodeResult::Done;
+            } else if (output_bytes_left_ == 0) {
+                *output = std::move(output_block_);
+                output_block_.resize(OutputBlockSize);
+                output_bytes_left_ = OutputBlockSize;
+                return BrotliEncodeResult::MoreOutput;
+            } else if (input_buffer_.empty()) {
+                return BrotliEncodeResult::NeedInput;
+            }
+        }
+    }
+
+  private:
+    bool finished_ = false;
+    IOVector input_buffer_;
+    Block output_block_;
+    size_t output_bytes_left_;
+    std::unique_ptr<BrotliEncoderState, void (*)(BrotliEncoderState*)> encoder_;
+};
diff --git a/adb/client/adb_client.cpp b/adb/client/adb_client.cpp
index 5a7bc8d..f724cb5 100644
--- a/adb/client/adb_client.cpp
+++ b/adb/client/adb_client.cpp
@@ -128,7 +128,7 @@
     return result;
 }
 
-bool adb_status(int fd, std::string* error) {
+bool adb_status(borrowed_fd fd, std::string* error) {
     char buf[5];
     if (!ReadFdExactly(fd, buf, 4)) {
         *error = perror_str("protocol fault (couldn't read status)");
@@ -149,7 +149,8 @@
     return false;
 }
 
-static int _adb_connect(std::string_view service, TransportId* transport, std::string* error) {
+static int _adb_connect(std::string_view service, TransportId* transport, std::string* error,
+                        bool force_switch = false) {
     LOG(DEBUG) << "_adb_connect: " << service;
     if (service.empty() || service.size() > MAX_PAYLOAD) {
         *error = android::base::StringPrintf("bad service name length (%zd)", service.size());
@@ -164,7 +165,7 @@
         return -2;
     }
 
-    if (!service.starts_with("host")) {
+    if (!service.starts_with("host") || force_switch) {
         std::optional<TransportId> transport_result = switch_socket_transport(fd.get(), error);
         if (!transport_result) {
             return -1;
@@ -221,7 +222,7 @@
     int port;
     std::string error;
     if (!parse_tcp_socket_spec(__adb_server_socket_spec, nullptr, &port, nullptr, &error)) {
-        LOG(FATAL) << "failed to parse server socket spec: " << error;
+        return {};
     }
 
     return adb_get_android_dir_path() + OS_PATH_SEPARATOR + "adb." + std::to_string(port);
@@ -323,7 +324,8 @@
     return result;
 }
 
-int adb_connect(TransportId* transport, std::string_view service, std::string* error) {
+int adb_connect(TransportId* transport, std::string_view service, std::string* error,
+                bool force_switch_device) {
     LOG(DEBUG) << "adb_connect: service: " << service;
 
     // Query the adb server's version.
@@ -336,7 +338,7 @@
         return 0;
     }
 
-    unique_fd fd(_adb_connect(service, transport, error));
+    unique_fd fd(_adb_connect(service, transport, error, force_switch_device));
     if (fd == -1) {
         D("_adb_connect error: %s", error->c_str());
     } else if(fd == -2) {
@@ -398,9 +400,15 @@
 }
 
 bool adb_get_feature_set(FeatureSet* feature_set, std::string* error) {
-    std::string result;
-    if (adb_query(format_host_command("features"), &result, error)) {
-        *feature_set = StringToFeatureSet(result);
+    static FeatureSet* features = nullptr;
+    if (!features) {
+        std::string result;
+        if (adb_query(format_host_command("features"), &result, error)) {
+            features = new FeatureSet(StringToFeatureSet(result));
+        }
+    }
+    if (features) {
+        *feature_set = *features;
         return true;
     }
     feature_set->clear();
diff --git a/adb/client/adb_client.h b/adb/client/adb_client.h
index 8d32c93..1c6cde7 100644
--- a/adb/client/adb_client.h
+++ b/adb/client/adb_client.h
@@ -16,13 +16,15 @@
 
 #pragma once
 
-#include "adb.h"
-#include "sysdeps.h"
-#include "transport.h"
-
+#include <functional>
 #include <optional>
 #include <string>
 
+#include "adb.h"
+#include "adb_unique_fd.h"
+#include "sysdeps.h"
+#include "transport.h"
+
 // Explicitly check the adb server version.
 // All of the commands below do this implicitly.
 // Only the first invocation of this function will check the server version.
@@ -33,7 +35,11 @@
 int adb_connect(std::string_view service, std::string* _Nonnull error);
 
 // Same as above, except returning the TransportId for the service that we've connected to.
-int adb_connect(TransportId* _Nullable id, std::string_view service, std::string* _Nonnull error);
+// force_switch_device forces the function to attempt to select a device, even if the service
+// string appears to be a host: service (for use with host services that are device specific, like
+// forward).
+int adb_connect(TransportId* _Nullable id, std::string_view service, std::string* _Nonnull error,
+                bool force_switch_device = false);
 
 // Kill the currently running adb server, if it exists.
 bool adb_kill_server();
@@ -64,7 +70,7 @@
 
 // Reads a standard adb status response (OKAY|FAIL) and returns true in the
 // event of OKAY, false in the event of FAIL or protocol error.
-bool adb_status(int fd, std::string* _Nonnull error);
+bool adb_status(borrowed_fd fd, std::string* _Nonnull error);
 
 // Create a host command corresponding to selected transport type/serial.
 std::string format_host_command(const char* _Nonnull command);
@@ -81,3 +87,19 @@
 // Globally acccesible argv/envp, for the purpose of re-execing adb.
 extern const char* _Nullable * _Nullable __adb_argv;
 extern const char* _Nullable * _Nullable __adb_envp;
+
+// ADB Secure DNS service interface. Used to query what ADB Secure DNS services have been
+// resolved, and to run some kind of callback for each one.
+using adb_secure_foreach_service_callback = std::function<void(
+        const char* _Nonnull service_name, const char* _Nonnull ip_address, uint16_t port)>;
+
+// Queries pairing/connect services that have been discovered and resolved.
+// If |host_name| is not null, run |cb| only for services
+// matching |host_name|. Otherwise, run for all services.
+void adb_secure_foreach_pairing_service(const char* _Nullable service_name,
+                                        adb_secure_foreach_service_callback cb);
+void adb_secure_foreach_connect_service(const char* _Nullable service_name,
+                                        adb_secure_foreach_service_callback cb);
+// Tries to connect to a |service_name| if found. Returns true if found and
+// connected, false otherwise.
+bool adb_secure_connect_by_service_name(const char* _Nonnull service_name);
diff --git a/adb/client/adb_install.cpp b/adb/client/adb_install.cpp
index 16fa215..f2de0d2 100644
--- a/adb/client/adb_install.cpp
+++ b/adb/client/adb_install.cpp
@@ -16,15 +16,18 @@
 
 #include "adb_install.h"
 
+#include <fcntl.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <algorithm>
-#include <iostream>
 #include <string>
+#include <string_view>
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/parsebool.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 
@@ -35,29 +38,49 @@
 #include "client/file_sync_client.h"
 #include "commandline.h"
 #include "fastdeploy.h"
+#include "incremental.h"
 
-#if defined(ENABLE_FASTDEPLOY)
+using namespace std::literals;
+
 static constexpr int kFastDeployMinApi = 24;
-#endif
+
+namespace {
+
+enum InstallMode {
+    INSTALL_DEFAULT,
+    INSTALL_PUSH,
+    INSTALL_STREAM,
+    INSTALL_INCREMENTAL,
+};
+
+enum class CmdlineOption { None, Enable, Disable };
+}
 
 static bool can_use_feature(const char* feature) {
     FeatureSet features;
     std::string error;
     if (!adb_get_feature_set(&features, &error)) {
         fprintf(stderr, "error: %s\n", error.c_str());
-        return true;
+        return false;
     }
     return CanUseFeature(features, feature);
 }
 
-static bool use_legacy_install() {
-    return !can_use_feature(kFeatureCmd);
+static InstallMode best_install_mode() {
+    if (can_use_feature(kFeatureCmd)) {
+        return INSTALL_STREAM;
+    }
+    return INSTALL_PUSH;
 }
 
 static bool is_apex_supported() {
     return can_use_feature(kFeatureApex);
 }
 
+static bool is_abb_exec_supported() {
+    return can_use_feature(kFeatureAbbExec);
+}
+
 static int pm_command(int argc, const char** argv) {
     std::string cmd = "pm";
 
@@ -112,7 +135,7 @@
 }
 
 int uninstall_app(int argc, const char** argv) {
-    if (use_legacy_install()) {
+    if (best_install_mode() == INSTALL_PUSH) {
         return uninstall_app_legacy(argc, argv);
     }
     return uninstall_app_streamed(argc, argv);
@@ -132,15 +155,15 @@
     *buf = '\0';
 }
 
-#if defined(ENABLE_FASTDEPLOY)
-static int delete_device_patch_file(const char* apkPath) {
-    std::string patchDevicePath = get_patch_path(apkPath);
-    return delete_device_file(patchDevicePath);
+static unique_fd send_command(const std::vector<std::string>& cmd_args, std::string* error) {
+    if (is_abb_exec_supported()) {
+        return send_abb_exec_command(cmd_args, error);
+    } else {
+        return unique_fd(adb_connect(android::base::Join(cmd_args, " "), error));
+    }
 }
-#endif
 
-static int install_app_streamed(int argc, const char** argv, bool use_fastdeploy,
-                                bool use_localagent) {
+static int install_app_streamed(int argc, const char** argv, bool use_fastdeploy) {
     printf("Performing Streamed Install\n");
 
     // The last argument must be the APK file
@@ -162,81 +185,79 @@
         error_exit("--fastdeploy doesn't support .apex files");
     }
 
-    if (use_fastdeploy == true) {
-#if defined(ENABLE_FASTDEPLOY)
-        TemporaryFile metadataTmpFile;
-        std::string patchTmpFilePath;
-        {
-            TemporaryFile patchTmpFile;
-            patchTmpFile.DoNotRemove();
-            patchTmpFilePath = patchTmpFile.path;
+    if (use_fastdeploy) {
+        auto metadata = extract_metadata(file);
+        if (metadata.has_value()) {
+            // pass all but 1st (command) and last (apk path) parameters through to pm for
+            // session creation
+            std::vector<const char*> pm_args{argv + 1, argv + argc - 1};
+            auto patchFd = install_patch(pm_args.size(), pm_args.data());
+            return stream_patch(file, std::move(metadata.value()), std::move(patchFd));
         }
+    }
 
-        FILE* metadataFile = fopen(metadataTmpFile.path, "wb");
-        extract_metadata(file, metadataFile);
-        fclose(metadataFile);
+    struct stat sb;
+    if (stat(file, &sb) == -1) {
+        fprintf(stderr, "adb: failed to stat %s: %s\n", file, strerror(errno));
+        return 1;
+    }
 
-        create_patch(file, metadataTmpFile.path, patchTmpFilePath.c_str());
-        // pass all but 1st (command) and last (apk path) parameters through to pm for
-        // session creation
-        std::vector<const char*> pm_args{argv + 1, argv + argc - 1};
-        install_patch(file, patchTmpFilePath.c_str(), pm_args.size(), pm_args.data());
-        adb_unlink(patchTmpFilePath.c_str());
-        delete_device_patch_file(file);
-        return 0;
-#else
-        error_exit("fastdeploy is disabled");
+    unique_fd local_fd(adb_open(file, O_RDONLY | O_CLOEXEC));
+    if (local_fd < 0) {
+        fprintf(stderr, "adb: failed to open %s: %s\n", file, strerror(errno));
+        return 1;
+    }
+
+#ifdef __linux__
+    posix_fadvise(local_fd.get(), 0, 0, POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE);
 #endif
-    } else {
-        struct stat sb;
-        if (stat(file, &sb) == -1) {
-            fprintf(stderr, "adb: failed to stat %s: %s\n", file, strerror(errno));
-            return 1;
+
+    const bool use_abb_exec = is_abb_exec_supported();
+    std::string error;
+    std::vector<std::string> cmd_args = {use_abb_exec ? "package" : "exec:cmd package"};
+    cmd_args.reserve(argc + 3);
+
+    // don't copy the APK name, but, copy the rest of the arguments as-is
+    while (argc-- > 1) {
+        if (use_abb_exec) {
+            cmd_args.push_back(*argv++);
+        } else {
+            cmd_args.push_back(escape_arg(*argv++));
         }
+    }
 
-        unique_fd local_fd(adb_open(file, O_RDONLY | O_CLOEXEC));
-        if (local_fd < 0) {
-            fprintf(stderr, "adb: failed to open %s: %s\n", file, strerror(errno));
-            return 1;
-        }
+    // add size parameter [required for streaming installs]
+    // do last to override any user specified value
+    cmd_args.push_back("-S");
+    cmd_args.push_back(android::base::StringPrintf("%" PRIu64, static_cast<uint64_t>(sb.st_size)));
 
-        std::string error;
-        std::string cmd = "exec:cmd package";
+    if (is_apex) {
+        cmd_args.push_back("--apex");
+    }
 
-        // don't copy the APK name, but, copy the rest of the arguments as-is
-        while (argc-- > 1) {
-            cmd += " " + escape_arg(std::string(*argv++));
-        }
+    unique_fd remote_fd = send_command(cmd_args, &error);
+    if (remote_fd < 0) {
+        fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
+        return 1;
+    }
 
-        // add size parameter [required for streaming installs]
-        // do last to override any user specified value
-        cmd += " " + android::base::StringPrintf("-S %" PRIu64, static_cast<uint64_t>(sb.st_size));
+    if (!copy_to_file(local_fd.get(), remote_fd.get())) {
+        fprintf(stderr, "adb: failed to install: copy_to_file: %s: %s", file, strerror(errno));
+        return 1;
+    }
 
-        if (is_apex) {
-            cmd += " --apex";
-        }
-
-        unique_fd remote_fd(adb_connect(cmd, &error));
-        if (remote_fd < 0) {
-            fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
-            return 1;
-        }
-
-        char buf[BUFSIZ];
-        copy_to_file(local_fd.get(), remote_fd.get());
-        read_status_line(remote_fd.get(), buf, sizeof(buf));
-
-        if (!strncmp("Success", buf, 7)) {
-            fputs(buf, stdout);
-            return 0;
-        }
+    char buf[BUFSIZ];
+    read_status_line(remote_fd.get(), buf, sizeof(buf));
+    if (strncmp("Success", buf, 7) != 0) {
         fprintf(stderr, "adb: failed to install %s: %s", file, buf);
         return 1;
     }
+
+    fputs(buf, stdout);
+    return 0;
 }
 
-static int install_app_legacy(int argc, const char** argv, bool use_fastdeploy,
-                              bool use_localagent) {
+static int install_app_legacy(int argc, const char** argv, bool use_fastdeploy) {
     printf("Performing Push Install\n");
 
     // Find last APK argument.
@@ -256,145 +277,266 @@
 
     int result = -1;
     std::vector<const char*> apk_file = {argv[last_apk]};
-    std::string apk_dest =
-            "/data/local/tmp/" + android::base::Basename(argv[last_apk]);
-
-    if (use_fastdeploy == true) {
-#if defined(ENABLE_FASTDEPLOY)
-        TemporaryFile metadataTmpFile;
-        TemporaryFile patchTmpFile;
-
-        FILE* metadataFile = fopen(metadataTmpFile.path, "wb");
-        extract_metadata(apk_file[0], metadataFile);
-        fclose(metadataFile);
-
-        create_patch(apk_file[0], metadataTmpFile.path, patchTmpFile.path);
-        apply_patch_on_device(apk_file[0], patchTmpFile.path, apk_dest.c_str());
-#else
-        error_exit("fastdeploy is disabled");
-#endif
-    } else {
-        if (!do_sync_push(apk_file, apk_dest.c_str(), false)) goto cleanup_apk;
-    }
-
+    std::string apk_dest = "/data/local/tmp/" + android::base::Basename(argv[last_apk]);
     argv[last_apk] = apk_dest.c_str(); /* destination name, not source location */
-    result = pm_command(argc, argv);
 
-cleanup_apk:
-    if (use_fastdeploy == true) {
-#if defined(ENABLE_FASTDEPLOY)
-        delete_device_patch_file(apk_file[0]);
-#endif
+    if (use_fastdeploy) {
+        auto metadata = extract_metadata(apk_file[0]);
+        if (metadata.has_value()) {
+            auto patchFd = apply_patch_on_device(apk_dest.c_str());
+            int status = stream_patch(apk_file[0], std::move(metadata.value()), std::move(patchFd));
+
+            result = pm_command(argc, argv);
+            delete_device_file(apk_dest);
+
+            return status;
+        }
     }
-    delete_device_file(apk_dest);
+
+    if (do_sync_push(apk_file, apk_dest.c_str(), false, true)) {
+        result = pm_command(argc, argv);
+        delete_device_file(apk_dest);
+    }
+
     return result;
 }
 
+template <class TimePoint>
+static int ms_between(TimePoint start, TimePoint end) {
+    return std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
+}
+
+static int install_app_incremental(int argc, const char** argv, bool wait, bool silent) {
+    using clock = std::chrono::high_resolution_clock;
+    const auto start = clock::now();
+    int first_apk = -1;
+    int last_apk = -1;
+    incremental::Args passthrough_args = {};
+    for (int i = 0; i < argc; ++i) {
+        const auto arg = std::string_view(argv[i]);
+        if (android::base::EndsWithIgnoreCase(arg, ".apk"sv)) {
+            last_apk = i;
+            if (first_apk == -1) {
+                first_apk = i;
+            }
+        } else if (arg.starts_with("install"sv)) {
+            // incremental installation command on the device is the same for all its variations in
+            // the adb, e.g. install-multiple or install-multi-package
+        } else {
+            passthrough_args.push_back(arg);
+        }
+    }
+
+    if (first_apk == -1) {
+        if (!silent) {
+            fprintf(stderr, "error: need at least one APK file on command line\n");
+        }
+        return -1;
+    }
+
+    auto files = incremental::Files{argv + first_apk, argv + last_apk + 1};
+    if (silent) {
+        // For a silent installation we want to do the lightweight check first and bail early and
+        // quietly if it fails.
+        if (!incremental::can_install(files)) {
+            return -1;
+        }
+    }
+
+    printf("Performing Incremental Install\n");
+    auto server_process = incremental::install(files, passthrough_args, silent);
+    if (!server_process) {
+        return -1;
+    }
+
+    const auto end = clock::now();
+    printf("Install command complete in %d ms\n", ms_between(start, end));
+
+    if (wait) {
+        (*server_process).wait();
+    }
+
+    return 0;
+}
+
+static std::pair<InstallMode, std::optional<InstallMode>> calculate_install_mode(
+        InstallMode modeFromArgs, bool fastdeploy, CmdlineOption incremental_request) {
+    if (incremental_request == CmdlineOption::Enable) {
+        if (fastdeploy) {
+            error_exit(
+                    "--incremental and --fast-deploy options are incompatible. "
+                    "Please choose one");
+        }
+    }
+
+    if (modeFromArgs != INSTALL_DEFAULT) {
+        if (incremental_request == CmdlineOption::Enable) {
+            error_exit("--incremental is not compatible with other installation modes");
+        }
+        return {modeFromArgs, std::nullopt};
+    }
+
+    if (incremental_request != CmdlineOption::Disable && !is_abb_exec_supported()) {
+        if (incremental_request == CmdlineOption::None) {
+            incremental_request = CmdlineOption::Disable;
+        } else {
+            error_exit("Device doesn't support incremental installations");
+        }
+    }
+    if (incremental_request == CmdlineOption::None) {
+        // check if the host is ok with incremental by default
+        if (const char* incrementalFromEnv = getenv("ADB_INSTALL_DEFAULT_INCREMENTAL")) {
+            using namespace android::base;
+            auto val = ParseBool(incrementalFromEnv);
+            if (val == ParseBoolResult::kFalse) {
+                incremental_request = CmdlineOption::Disable;
+            }
+        }
+    }
+    if (incremental_request == CmdlineOption::None) {
+        // still ok: let's see if the device allows using incremental by default
+        // it starts feeling like we're looking for an excuse to not to use incremental...
+        std::string error;
+        std::vector<std::string> args = {"settings", "get",
+                                         "enable_adb_incremental_install_default"};
+        auto fd = send_abb_exec_command(args, &error);
+        if (!fd.ok()) {
+            fprintf(stderr, "adb: retrieving the default device installation mode failed: %s",
+                    error.c_str());
+        } else {
+            char buf[BUFSIZ] = {};
+            read_status_line(fd.get(), buf, sizeof(buf));
+            using namespace android::base;
+            auto val = ParseBool(buf);
+            if (val == ParseBoolResult::kFalse) {
+                incremental_request = CmdlineOption::Disable;
+            }
+        }
+    }
+
+    if (incremental_request == CmdlineOption::Enable) {
+        // explicitly requested - no fallback
+        return {INSTALL_INCREMENTAL, std::nullopt};
+    }
+    const auto bestMode = best_install_mode();
+    if (incremental_request == CmdlineOption::None) {
+        // no opinion - use incremental, fallback to regular on a failure.
+        return {INSTALL_INCREMENTAL, bestMode};
+    }
+    // incremental turned off - use the regular best mode without a fallback.
+    return {bestMode, std::nullopt};
+}
+
+static std::vector<const char*> parse_install_mode(std::vector<const char*> argv,
+                                                   InstallMode* install_mode,
+                                                   CmdlineOption* incremental_request,
+                                                   bool* incremental_wait) {
+    *install_mode = INSTALL_DEFAULT;
+    *incremental_request = CmdlineOption::None;
+    *incremental_wait = false;
+
+    std::vector<const char*> passthrough;
+    for (auto&& arg : argv) {
+        if (arg == "--streaming"sv) {
+            *install_mode = INSTALL_STREAM;
+        } else if (arg == "--no-streaming"sv) {
+            *install_mode = INSTALL_PUSH;
+        } else if (strlen(arg) >= "--incr"sv.size() && "--incremental"sv.starts_with(arg)) {
+            *incremental_request = CmdlineOption::Enable;
+        } else if (strlen(arg) >= "--no-incr"sv.size() && "--no-incremental"sv.starts_with(arg)) {
+            *incremental_request = CmdlineOption::Disable;
+        } else if (arg == "--wait"sv) {
+            *incremental_wait = true;
+        } else {
+            passthrough.push_back(arg);
+        }
+    }
+    return passthrough;
+}
+
+static std::vector<const char*> parse_fast_deploy_mode(
+        std::vector<const char*> argv, bool* use_fastdeploy,
+        FastDeploy_AgentUpdateStrategy* agent_update_strategy) {
+    *use_fastdeploy = false;
+    *agent_update_strategy = FastDeploy_AgentUpdateDifferentVersion;
+
+    std::vector<const char*> passthrough;
+    for (auto&& arg : argv) {
+        if (arg == "--fastdeploy"sv) {
+            *use_fastdeploy = true;
+        } else if (arg == "--no-fastdeploy"sv) {
+            *use_fastdeploy = false;
+        } else if (arg == "--force-agent"sv) {
+            *agent_update_strategy = FastDeploy_AgentUpdateAlways;
+        } else if (arg == "--date-check-agent"sv) {
+            *agent_update_strategy = FastDeploy_AgentUpdateNewerTimeStamp;
+        } else if (arg == "--version-check-agent"sv) {
+            *agent_update_strategy = FastDeploy_AgentUpdateDifferentVersion;
+        } else {
+            passthrough.push_back(arg);
+        }
+    }
+    return passthrough;
+}
+
 int install_app(int argc, const char** argv) {
-    std::vector<int> processedArgIndicies;
-    enum installMode {
-        INSTALL_DEFAULT,
-        INSTALL_PUSH,
-        INSTALL_STREAM
-    } installMode = INSTALL_DEFAULT;
+    InstallMode install_mode = INSTALL_DEFAULT;
+    auto incremental_request = CmdlineOption::None;
+    bool incremental_wait = false;
+
     bool use_fastdeploy = false;
-    bool is_reinstall = false;
-    bool use_localagent = false;
     FastDeploy_AgentUpdateStrategy agent_update_strategy = FastDeploy_AgentUpdateDifferentVersion;
 
-    for (int i = 1; i < argc; i++) {
-        if (!strcmp(argv[i], "--streaming")) {
-            processedArgIndicies.push_back(i);
-            installMode = INSTALL_STREAM;
-        } else if (!strcmp(argv[i], "--no-streaming")) {
-            processedArgIndicies.push_back(i);
-            installMode = INSTALL_PUSH;
-        } else if (!strcmp(argv[i], "-r")) {
-            // Note that this argument is not added to processedArgIndicies because it
-            // must be passed through to pm
-            is_reinstall = true;
-        } else if (!strcmp(argv[i], "--fastdeploy")) {
-            processedArgIndicies.push_back(i);
-            use_fastdeploy = true;
-        } else if (!strcmp(argv[i], "--no-fastdeploy")) {
-            processedArgIndicies.push_back(i);
-            use_fastdeploy = false;
-        } else if (!strcmp(argv[i], "--force-agent")) {
-            processedArgIndicies.push_back(i);
-            agent_update_strategy = FastDeploy_AgentUpdateAlways;
-        } else if (!strcmp(argv[i], "--date-check-agent")) {
-            processedArgIndicies.push_back(i);
-            agent_update_strategy = FastDeploy_AgentUpdateNewerTimeStamp;
-        } else if (!strcmp(argv[i], "--version-check-agent")) {
-            processedArgIndicies.push_back(i);
-            agent_update_strategy = FastDeploy_AgentUpdateDifferentVersion;
-#ifndef _WIN32
-        } else if (!strcmp(argv[i], "--local-agent")) {
-            processedArgIndicies.push_back(i);
-            use_localagent = true;
-#endif
-        }
-    }
+    auto unused_argv = parse_install_mode({argv, argv + argc}, &install_mode, &incremental_request,
+                                          &incremental_wait);
+    auto passthrough_argv =
+            parse_fast_deploy_mode(std::move(unused_argv), &use_fastdeploy, &agent_update_strategy);
 
-    if (installMode == INSTALL_DEFAULT) {
-        if (use_legacy_install()) {
-            installMode = INSTALL_PUSH;
-        } else {
-            installMode = INSTALL_STREAM;
-        }
-    }
-
-    if (installMode == INSTALL_STREAM && use_legacy_install() == true) {
+    auto [primary_mode, fallback_mode] =
+            calculate_install_mode(install_mode, use_fastdeploy, incremental_request);
+    if ((primary_mode == INSTALL_STREAM ||
+         fallback_mode.value_or(INSTALL_PUSH) == INSTALL_STREAM) &&
+        best_install_mode() == INSTALL_PUSH) {
         error_exit("Attempting to use streaming install on unsupported device");
     }
 
-#if defined(ENABLE_FASTDEPLOY)
-    if (use_fastdeploy == true && get_device_api_level() < kFastDeployMinApi) {
-        printf("Fast Deploy is only compatible with devices of API version %d or higher, "
-               "ignoring.\n",
-               kFastDeployMinApi);
+    if (use_fastdeploy && get_device_api_level() < kFastDeployMinApi) {
+        fprintf(stderr,
+                "Fast Deploy is only compatible with devices of API version %d or higher, "
+                "ignoring.\n",
+                kFastDeployMinApi);
         use_fastdeploy = false;
     }
-#endif
+    fastdeploy_set_agent_update_strategy(agent_update_strategy);
 
-    std::vector<const char*> passthrough_argv;
-    for (int i = 0; i < argc; i++) {
-        if (std::find(processedArgIndicies.begin(), processedArgIndicies.end(), i) ==
-            processedArgIndicies.end()) {
-            passthrough_argv.push_back(argv[i]);
-        }
-    }
     if (passthrough_argv.size() < 2) {
         error_exit("install requires an apk argument");
     }
 
-    if (use_fastdeploy == true) {
-#if defined(ENABLE_FASTDEPLOY)
-        fastdeploy_set_local_agent(use_localagent);
-        update_agent(agent_update_strategy);
-
-        // The last argument must be the APK file
-        const char* file = passthrough_argv.back();
-        use_fastdeploy = find_package(file);
-#else
-        error_exit("fastdeploy is disabled");
-#endif
+    auto run_install_mode = [&](InstallMode install_mode, bool silent) {
+        switch (install_mode) {
+            case INSTALL_PUSH:
+                return install_app_legacy(passthrough_argv.size(), passthrough_argv.data(),
+                                          use_fastdeploy);
+            case INSTALL_STREAM:
+                return install_app_streamed(passthrough_argv.size(), passthrough_argv.data(),
+                                            use_fastdeploy);
+            case INSTALL_INCREMENTAL:
+                return install_app_incremental(passthrough_argv.size(), passthrough_argv.data(),
+                                               incremental_wait, silent);
+            case INSTALL_DEFAULT:
+            default:
+                error_exit("invalid install mode");
+        }
+    };
+    auto res = run_install_mode(primary_mode, fallback_mode.has_value());
+    if (res && fallback_mode.value_or(primary_mode) != primary_mode) {
+        res = run_install_mode(*fallback_mode, false);
     }
-
-    switch (installMode) {
-        case INSTALL_PUSH:
-            return install_app_legacy(passthrough_argv.size(), passthrough_argv.data(),
-                                      use_fastdeploy, use_localagent);
-        case INSTALL_STREAM:
-            return install_app_streamed(passthrough_argv.size(), passthrough_argv.data(),
-                                        use_fastdeploy, use_localagent);
-        case INSTALL_DEFAULT:
-        default:
-            return 1;
-    }
+    return res;
 }
 
-int install_multiple_app(int argc, const char** argv) {
+static int install_multiple_app_streamed(int argc, const char** argv) {
     // Find all APK arguments starting at end.
     // All other arguments passed through verbatim.
     int first_apk = -1;
@@ -409,7 +551,8 @@
             android::base::EndsWithIgnoreCase(file, ".dm") ||
             android::base::EndsWithIgnoreCase(file, ".fsv_sig")) {
             struct stat sb;
-            if (stat(file, &sb) != -1) total_size += sb.st_size;
+            if (stat(file, &sb) == -1) perror_exit("failed to stat \"%s\"", file);
+            total_size += sb.st_size;
             first_apk = i;
         } else {
             break;
@@ -418,24 +561,27 @@
 
     if (first_apk == -1) error_exit("need APK file on command line");
 
-    std::string install_cmd;
-    if (use_legacy_install()) {
-        install_cmd = "exec:pm";
-    } else {
-        install_cmd = "exec:cmd package";
-    }
+    const bool use_abb_exec = is_abb_exec_supported();
+    const std::string install_cmd =
+            use_abb_exec ? "package"
+                         : best_install_mode() == INSTALL_PUSH ? "exec:pm" : "exec:cmd package";
 
-    std::string cmd = android::base::StringPrintf("%s install-create -S %" PRIu64,
-                                                  install_cmd.c_str(), total_size);
+    std::vector<std::string> cmd_args = {install_cmd, "install-create", "-S",
+                                         std::to_string(total_size)};
+    cmd_args.reserve(first_apk + 4);
     for (int i = 1; i < first_apk; i++) {
-        cmd += " " + escape_arg(argv[i]);
+        if (use_abb_exec) {
+            cmd_args.push_back(argv[i]);
+        } else {
+            cmd_args.push_back(escape_arg(argv[i]));
+        }
     }
 
     // Create install session
     std::string error;
     char buf[BUFSIZ];
     {
-        unique_fd fd(adb_connect(cmd, &error));
+        unique_fd fd = send_command(cmd_args, &error);
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
             return EXIT_FAILURE;
@@ -457,69 +603,123 @@
         fputs(buf, stderr);
         return EXIT_FAILURE;
     }
+    const auto session_id_str = std::to_string(session_id);
 
     // Valid session, now stream the APKs
-    int success = 1;
+    bool success = true;
     for (int i = first_apk; i < argc; i++) {
         const char* file = argv[i];
         struct stat sb;
         if (stat(file, &sb) == -1) {
-            fprintf(stderr, "adb: failed to stat %s: %s\n", file, strerror(errno));
-            success = 0;
+            fprintf(stderr, "adb: failed to stat \"%s\": %s\n", file, strerror(errno));
+            success = false;
             goto finalize_session;
         }
 
-        std::string cmd =
-                android::base::StringPrintf("%s install-write -S %" PRIu64 " %d %s -",
-                                            install_cmd.c_str(), static_cast<uint64_t>(sb.st_size),
-                                            session_id, android::base::Basename(file).c_str());
+        std::vector<std::string> cmd_args = {
+                install_cmd,
+                "install-write",
+                "-S",
+                std::to_string(sb.st_size),
+                session_id_str,
+                android::base::Basename(file),
+                "-",
+        };
 
         unique_fd local_fd(adb_open(file, O_RDONLY | O_CLOEXEC));
         if (local_fd < 0) {
-            fprintf(stderr, "adb: failed to open %s: %s\n", file, strerror(errno));
-            success = 0;
+            fprintf(stderr, "adb: failed to open \"%s\": %s\n", file, strerror(errno));
+            success = false;
             goto finalize_session;
         }
 
         std::string error;
-        unique_fd remote_fd(adb_connect(cmd, &error));
+        unique_fd remote_fd = send_command(cmd_args, &error);
         if (remote_fd < 0) {
             fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
-            success = 0;
+            success = false;
             goto finalize_session;
         }
 
-        copy_to_file(local_fd.get(), remote_fd.get());
+        if (!copy_to_file(local_fd.get(), remote_fd.get())) {
+            fprintf(stderr, "adb: failed to write \"%s\": %s\n", file, strerror(errno));
+            success = false;
+            goto finalize_session;
+        }
+
         read_status_line(remote_fd.get(), buf, sizeof(buf));
 
         if (strncmp("Success", buf, 7)) {
-            fprintf(stderr, "adb: failed to write %s\n", file);
+            fprintf(stderr, "adb: failed to write \"%s\"\n", file);
             fputs(buf, stderr);
-            success = 0;
+            success = false;
             goto finalize_session;
         }
     }
 
 finalize_session:
-    // Commit session if we streamed everything okay; otherwise abandon
-    std::string service = android::base::StringPrintf("%s install-%s %d", install_cmd.c_str(),
-                                                      success ? "commit" : "abandon", session_id);
+    // Commit session if we streamed everything okay; otherwise abandon.
+    std::vector<std::string> service_args = {
+            install_cmd,
+            success ? "install-commit" : "install-abandon",
+            session_id_str,
+    };
     {
-        unique_fd fd(adb_connect(service, &error));
+        unique_fd fd = send_command(service_args, &error);
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
             return EXIT_FAILURE;
         }
         read_status_line(fd.get(), buf, sizeof(buf));
     }
+    if (!success) return EXIT_FAILURE;
 
-    if (!strncmp("Success", buf, 7)) {
-        fputs(buf, stdout);
-        return 0;
+    if (strncmp("Success", buf, 7)) {
+        fprintf(stderr, "adb: failed to finalize session\n");
+        fputs(buf, stderr);
+        return EXIT_FAILURE;
     }
-    fprintf(stderr, "adb: failed to finalize session\n");
-    fputs(buf, stderr);
-    return EXIT_FAILURE;
+
+    fputs(buf, stdout);
+    return EXIT_SUCCESS;
+}
+
+int install_multiple_app(int argc, const char** argv) {
+    InstallMode install_mode = INSTALL_DEFAULT;
+    auto incremental_request = CmdlineOption::None;
+    bool incremental_wait = false;
+    bool use_fastdeploy = false;
+
+    auto passthrough_argv = parse_install_mode({argv + 1, argv + argc}, &install_mode,
+                                               &incremental_request, &incremental_wait);
+
+    auto [primary_mode, fallback_mode] =
+            calculate_install_mode(install_mode, use_fastdeploy, incremental_request);
+    if ((primary_mode == INSTALL_STREAM ||
+         fallback_mode.value_or(INSTALL_PUSH) == INSTALL_STREAM) &&
+        best_install_mode() == INSTALL_PUSH) {
+        error_exit("Attempting to use streaming install on unsupported device");
+    }
+
+    auto run_install_mode = [&](InstallMode install_mode, bool silent) {
+        switch (install_mode) {
+            case INSTALL_PUSH:
+            case INSTALL_STREAM:
+                return install_multiple_app_streamed(passthrough_argv.size(),
+                                                     passthrough_argv.data());
+            case INSTALL_INCREMENTAL:
+                return install_app_incremental(passthrough_argv.size(), passthrough_argv.data(),
+                                               incremental_wait, silent);
+            case INSTALL_DEFAULT:
+            default:
+                error_exit("invalid install mode");
+        }
+    };
+    auto res = run_install_mode(primary_mode, fallback_mode.has_value());
+    if (res && fallback_mode.value_or(primary_mode) != primary_mode) {
+        res = run_install_mode(*fallback_mode, false);
+    }
+    return res;
 }
 
 int install_multi_package(int argc, const char** argv) {
@@ -542,27 +742,35 @@
 
     if (first_package == -1) error_exit("need APK or APEX files on command line");
 
-    if (use_legacy_install()) {
+    if (best_install_mode() == INSTALL_PUSH) {
         fprintf(stderr, "adb: multi-package install is not supported on this device\n");
         return EXIT_FAILURE;
     }
-    std::string install_cmd = "exec:cmd package";
 
-    std::string multi_package_cmd =
-            android::base::StringPrintf("%s install-create --multi-package", install_cmd.c_str());
+    const bool use_abb_exec = is_abb_exec_supported();
+    const std::string install_cmd = use_abb_exec ? "package" : "exec:cmd package";
+
+    std::vector<std::string> multi_package_cmd_args = {install_cmd, "install-create",
+                                                       "--multi-package"};
+
+    multi_package_cmd_args.reserve(first_package + 4);
     for (int i = 1; i < first_package; i++) {
-        multi_package_cmd += " " + escape_arg(argv[i]);
+        if (use_abb_exec) {
+            multi_package_cmd_args.push_back(argv[i]);
+        } else {
+            multi_package_cmd_args.push_back(escape_arg(argv[i]));
+        }
     }
 
     if (apex_found) {
-        multi_package_cmd += " --staged";
+        multi_package_cmd_args.emplace_back("--staged");
     }
 
     // Create multi-package install session
     std::string error;
     char buf[BUFSIZ];
     {
-        unique_fd fd(adb_connect(multi_package_cmd, &error));
+        unique_fd fd = send_command(multi_package_cmd_args, &error);
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for create multi-package: %s\n", error.c_str());
             return EXIT_FAILURE;
@@ -584,6 +792,7 @@
         fputs(buf, stderr);
         return EXIT_FAILURE;
     }
+    const auto parent_session_id_str = std::to_string(parent_session_id);
 
     fprintf(stdout, "Created parent session ID %d.\n", parent_session_id);
 
@@ -591,17 +800,30 @@
 
     // Valid session, now create the individual sessions and stream the APKs
     int success = EXIT_FAILURE;
-    std::string individual_cmd =
-            android::base::StringPrintf("%s install-create", install_cmd.c_str());
-    std::string all_session_ids = "";
+    std::vector<std::string> individual_cmd_args = {install_cmd, "install-create"};
     for (int i = 1; i < first_package; i++) {
-        individual_cmd += " " + escape_arg(argv[i]);
+        if (use_abb_exec) {
+            individual_cmd_args.push_back(argv[i]);
+        } else {
+            individual_cmd_args.push_back(escape_arg(argv[i]));
+        }
     }
     if (apex_found) {
-        individual_cmd += " --staged";
+        individual_cmd_args.emplace_back("--staged");
     }
-    std::string individual_apex_cmd = individual_cmd + " --apex";
-    std::string cmd = "";
+
+    std::vector<std::string> individual_apex_cmd_args;
+    if (apex_found) {
+        individual_apex_cmd_args = individual_cmd_args;
+        individual_apex_cmd_args.emplace_back("--apex");
+    }
+
+    std::vector<std::string> add_session_cmd_args = {
+            install_cmd,
+            "install-add-session",
+            parent_session_id_str,
+    };
+
     for (int i = first_package; i < argc; i++) {
         const char* file = argv[i];
         char buf[BUFSIZ];
@@ -609,9 +831,9 @@
             unique_fd fd;
             // Create individual install session
             if (android::base::EndsWithIgnoreCase(file, ".apex")) {
-                fd.reset(adb_connect(individual_apex_cmd, &error));
+                fd = send_command(individual_apex_cmd_args, &error);
             } else {
-                fd.reset(adb_connect(individual_cmd, &error));
+                fd = send_command(individual_cmd_args, &error);
             }
             if (fd < 0) {
                 fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
@@ -634,6 +856,7 @@
             fputs(buf, stderr);
             goto finalize_multi_package_session;
         }
+        const auto session_id_str = std::to_string(session_id);
 
         fprintf(stdout, "Created child session ID %d.\n", session_id);
         session_ids.push_back(session_id);
@@ -648,10 +871,15 @@
                 goto finalize_multi_package_session;
             }
 
-            std::string cmd = android::base::StringPrintf(
-                    "%s install-write -S %" PRIu64 " %d %d_%s -", install_cmd.c_str(),
-                    static_cast<uint64_t>(sb.st_size), session_id, i,
-                    android::base::Basename(split).c_str());
+            std::vector<std::string> cmd_args = {
+                    install_cmd,
+                    "install-write",
+                    "-S",
+                    std::to_string(sb.st_size),
+                    session_id_str,
+                    android::base::StringPrintf("%d_%s", i, android::base::Basename(file).c_str()),
+                    "-",
+            };
 
             unique_fd local_fd(adb_open(split.c_str(), O_RDONLY | O_CLOEXEC));
             if (local_fd < 0) {
@@ -660,13 +888,17 @@
             }
 
             std::string error;
-            unique_fd remote_fd(adb_connect(cmd, &error));
+            unique_fd remote_fd = send_command(cmd_args, &error);
             if (remote_fd < 0) {
                 fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
                 goto finalize_multi_package_session;
             }
 
-            copy_to_file(local_fd.get(), remote_fd.get());
+            if (!copy_to_file(local_fd.get(), remote_fd.get())) {
+                fprintf(stderr, "adb: failed to write %s: %s\n", split.c_str(), strerror(errno));
+                goto finalize_multi_package_session;
+            }
+
             read_status_line(remote_fd.get(), buf, sizeof(buf));
 
             if (strncmp("Success", buf, 7)) {
@@ -675,13 +907,11 @@
                 goto finalize_multi_package_session;
             }
         }
-        all_session_ids += android::base::StringPrintf(" %d", session_id);
+        add_session_cmd_args.push_back(std::to_string(session_id));
     }
 
-    cmd = android::base::StringPrintf("%s install-add-session %d%s", install_cmd.c_str(),
-                                      parent_session_id, all_session_ids.c_str());
     {
-        unique_fd fd(adb_connect(cmd, &error));
+        unique_fd fd = send_command(add_session_cmd_args, &error);
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for install-add-session: %s\n", error.c_str());
             goto finalize_multi_package_session;
@@ -690,7 +920,8 @@
     }
 
     if (strncmp("Success", buf, 7)) {
-        fprintf(stderr, "adb: failed to link sessions (%s)\n", cmd.c_str());
+        fprintf(stderr, "adb: failed to link sessions (%s)\n",
+                android::base::Join(add_session_cmd_args, " ").c_str());
         fputs(buf, stderr);
         goto finalize_multi_package_session;
     }
@@ -700,11 +931,14 @@
 
 finalize_multi_package_session:
     // Commit session if we streamed everything okay; otherwise abandon
-    std::string service =
-            android::base::StringPrintf("%s install-%s %d", install_cmd.c_str(),
-                                        success == 0 ? "commit" : "abandon", parent_session_id);
+    std::vector<std::string> service_args = {
+            install_cmd,
+            success == 0 ? "install-commit" : "install-abandon",
+            parent_session_id_str,
+    };
+
     {
-        unique_fd fd(adb_connect(service, &error));
+        unique_fd fd = send_command(service_args, &error);
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
             return EXIT_FAILURE;
@@ -725,10 +959,13 @@
     session_ids.push_back(parent_session_id);
     // try to abandon all remaining sessions
     for (std::size_t i = 0; i < session_ids.size(); i++) {
-        service = android::base::StringPrintf("%s install-abandon %d", install_cmd.c_str(),
-                                              session_ids[i]);
+        std::vector<std::string> service_args = {
+                install_cmd,
+                "install-abandon",
+                std::to_string(session_ids[i]),
+        };
         fprintf(stderr, "Attempting to abandon session ID %d\n", session_ids[i]);
-        unique_fd fd(adb_connect(service, &error));
+        unique_fd fd = send_command(service_args, &error);
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
             continue;
@@ -739,6 +976,20 @@
 }
 
 int delete_device_file(const std::string& filename) {
-    std::string cmd = "rm -f " + escape_arg(filename);
-    return send_shell_command(cmd);
+    // http://b/17339227 "Sideloading a Readonly File Results in a Prompt to
+    // Delete" caused us to add `-f` here, to avoid the equivalent of the `-i`
+    // prompt that you get from BSD rm (used in Android 5) if you have a
+    // non-writable file and stdin is a tty (which is true for old versions of
+    // adbd).
+    //
+    // Unfortunately, `rm -f` requires Android 4.3, so that workaround broke
+    // earlier Android releases. This was reported as http://b/37704384 "adb
+    // install -r passes invalid argument to rm on Android 4.1" and
+    // http://b/37035817 "ADB Fails: rm failed for -f, No such file or
+    // directory".
+    //
+    // Testing on a variety of devices and emulators shows that redirecting
+    // stdin is sufficient to avoid the pseudo-`-i`, and works on toolbox,
+    // BSD, and toybox versions of rm.
+    return send_shell_command("rm " + escape_arg(filename) + " </dev/null");
 }
diff --git a/adb/client/adb_wifi.cpp b/adb/client/adb_wifi.cpp
new file mode 100644
index 0000000..fa71028
--- /dev/null
+++ b/adb/client/adb_wifi.cpp
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb_wifi.h"
+
+#include <fstream>
+#include <random>
+#include <thread>
+
+#include <adb/crypto/key.h>
+#include <adb/crypto/x509_generator.h>
+#include <android-base/file.h>
+#include <android-base/parsenetaddress.h>
+#include "client/pairing/pairing_client.h"
+
+#include "adb_auth.h"
+#include "adb_known_hosts.pb.h"
+#include "adb_utils.h"
+#include "client/adb_client.h"
+#include "sysdeps.h"
+
+using adbwifi::pairing::PairingClient;
+using namespace adb::crypto;
+
+struct PairingResultWaiter {
+    std::mutex mutex_;
+    std::condition_variable cv_;
+    std::optional<bool> is_valid_;
+    PeerInfo peer_info_;
+
+    static void OnResult(const PeerInfo* peer_info, void* opaque) {
+        CHECK(opaque);
+        auto* p = reinterpret_cast<PairingResultWaiter*>(opaque);
+        {
+            std::lock_guard<std::mutex> lock(p->mutex_);
+            if (peer_info) {
+                memcpy(&(p->peer_info_), peer_info, sizeof(PeerInfo));
+            }
+            p->is_valid_ = (peer_info != nullptr);
+        }
+        p->cv_.notify_one();
+    }
+};  // PairingResultWaiter
+
+void adb_wifi_init() {}
+
+static std::vector<uint8_t> stringToUint8(const std::string& str) {
+    auto* p8 = reinterpret_cast<const uint8_t*>(str.data());
+    return std::vector<uint8_t>(p8, p8 + str.length());
+}
+
+// Tries to replace the |old_file| with |new_file|.
+// On success, then |old_file| has been removed and replaced with the
+// contents of |new_file|, |new_file| will be removed, and only |old_file| will
+// remain.
+// On failure, both files will be unchanged.
+// |new_file| must exist, but |old_file| does not need to exist.
+bool SafeReplaceFile(std::string_view old_file, std::string_view new_file) {
+    std::string to_be_deleted(old_file);
+    to_be_deleted += ".tbd";
+
+    bool old_renamed = true;
+    if (adb_rename(old_file.data(), to_be_deleted.c_str()) != 0) {
+        // Don't exit here. This is not necessarily an error, because |old_file|
+        // may not exist.
+        PLOG(INFO) << "Failed to rename " << old_file;
+        old_renamed = false;
+    }
+
+    if (adb_rename(new_file.data(), old_file.data()) != 0) {
+        PLOG(ERROR) << "Unable to rename file (" << new_file << " => " << old_file << ")";
+        if (old_renamed) {
+            // Rename the .tbd file back to it's original name
+            adb_rename(to_be_deleted.c_str(), old_file.data());
+        }
+        return false;
+    }
+
+    adb_unlink(to_be_deleted.c_str());
+    return true;
+}
+
+static std::string get_user_known_hosts_path() {
+    return adb_get_android_dir_path() + OS_PATH_SEPARATOR + "adb_known_hosts.pb";
+}
+
+bool load_known_hosts_from_file(const std::string& path, adb::proto::AdbKnownHosts& known_hosts) {
+    // Check for file existence.
+    struct stat buf;
+    if (stat(path.c_str(), &buf) == -1) {
+        LOG(INFO) << "Known hosts file [" << path << "] does not exist...";
+        return false;
+    }
+
+    std::ifstream file(path, std::ios::binary);
+    if (!file) {
+        PLOG(ERROR) << "Unable to open [" << path << "].";
+        return false;
+    }
+
+    if (!known_hosts.ParseFromIstream(&file)) {
+        PLOG(ERROR) << "Failed to parse [" << path << "]. Deleting it as it may be corrupted.";
+        adb_unlink(path.c_str());
+        return false;
+    }
+
+    return true;
+}
+
+static bool write_known_host_to_file(std::string& known_host) {
+    std::string path = get_user_known_hosts_path();
+    if (path.empty()) {
+        PLOG(ERROR) << "Error getting user known hosts filename";
+        return false;
+    }
+
+    adb::proto::AdbKnownHosts known_hosts;
+    load_known_hosts_from_file(path, known_hosts);
+    auto* host_info = known_hosts.add_host_infos();
+    host_info->set_guid(known_host);
+
+    std::unique_ptr<TemporaryFile> temp_file(new TemporaryFile(adb_get_android_dir_path()));
+    if (temp_file->fd == -1) {
+        PLOG(ERROR) << "Failed to open [" << temp_file->path << "] for writing";
+        return false;
+    }
+
+    if (!known_hosts.SerializeToFileDescriptor(temp_file->fd)) {
+        LOG(ERROR) << "Unable to write out adb_knowns_hosts";
+        return false;
+    }
+    temp_file->DoNotRemove();
+    std::string temp_file_name(temp_file->path);
+    temp_file.reset();
+
+    // Replace the existing adb_known_hosts with the new one
+    if (!SafeReplaceFile(path, temp_file_name.c_str())) {
+        LOG(ERROR) << "Failed to replace old adb_known_hosts";
+        adb_unlink(temp_file_name.c_str());
+        return false;
+    }
+    chmod(path.c_str(), S_IRUSR | S_IWUSR | S_IRGRP);
+
+    return true;
+}
+
+bool adb_wifi_is_known_host(const std::string& host) {
+    std::string path = get_user_known_hosts_path();
+    if (path.empty()) {
+        PLOG(ERROR) << "Error getting user known hosts filename";
+        return false;
+    }
+
+    adb::proto::AdbKnownHosts known_hosts;
+    if (!load_known_hosts_from_file(path, known_hosts)) {
+        return false;
+    }
+
+    for (const auto& host_info : known_hosts.host_infos()) {
+        if (host == host_info.guid()) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void adb_wifi_pair_device(const std::string& host, const std::string& password,
+                          std::string& response) {
+    // Check the address for a valid address and port.
+    std::string parsed_host;
+    std::string err;
+    int port = -1;
+    if (!android::base::ParseNetAddress(host, &parsed_host, &port, nullptr, &err)) {
+        response = "Failed to parse address for pairing: " + err;
+        return;
+    }
+    if (port <= 0 || port > 65535) {
+        response = "Invalid port while parsing address [" + host + "]";
+        return;
+    }
+
+    auto priv_key = adb_auth_get_user_privkey();
+    auto x509_cert = GenerateX509Certificate(priv_key.get());
+    if (!x509_cert) {
+        LOG(ERROR) << "Unable to create X509 certificate for pairing";
+        return;
+    }
+    auto cert_str = X509ToPEMString(x509_cert.get());
+    auto priv_str = Key::ToPEMString(priv_key.get());
+
+    // Send our public key on pairing success
+    PeerInfo system_info = {};
+    system_info.type = ADB_RSA_PUB_KEY;
+    std::string public_key = adb_auth_get_userkey();
+    CHECK_LE(public_key.size(), sizeof(system_info.data) - 1);  // -1 for null byte
+    memcpy(system_info.data, public_key.data(), public_key.size());
+
+    auto pswd8 = stringToUint8(password);
+    auto cert8 = stringToUint8(cert_str);
+    auto priv8 = stringToUint8(priv_str);
+
+    auto client = PairingClient::Create(pswd8, system_info, cert8, priv8);
+    if (client == nullptr) {
+        response = "Failed: unable to create pairing client.";
+        return;
+    }
+
+    PairingResultWaiter waiter;
+    std::unique_lock<std::mutex> lock(waiter.mutex_);
+    if (!client->Start(host, waiter.OnResult, &waiter)) {
+        response = "Failed: Unable to start pairing client.";
+        return;
+    }
+    waiter.cv_.wait(lock, [&]() { return waiter.is_valid_.has_value(); });
+    if (!*(waiter.is_valid_)) {
+        response = "Failed: Wrong password or connection was dropped.";
+        return;
+    }
+
+    if (waiter.peer_info_.type != ADB_DEVICE_GUID) {
+        response = "Failed: Successfully paired but server returned unknown response=";
+        response += waiter.peer_info_.type;
+        return;
+    }
+
+    std::string device_guid = reinterpret_cast<const char*>(waiter.peer_info_.data);
+    response = "Successfully paired to " + host + " [guid=" + device_guid + "]";
+
+    // Write to adb_known_hosts
+    write_known_host_to_file(device_guid);
+    // Try to auto-connect.
+    adb_secure_connect_by_service_name(device_guid.c_str());
+}
diff --git a/adb/client/auth.cpp b/adb/client/auth.cpp
index 3eee426..35264c7 100644
--- a/adb/client/auth.cpp
+++ b/adb/client/auth.cpp
@@ -29,6 +29,10 @@
 #include <set>
 #include <string>
 
+#include <adb/crypto/rsa_2048_key.h>
+#include <adb/crypto/x509_generator.h>
+#include <adb/tls/adb_ca_list.h>
+#include <adb/tls/tls_connection.h>
 #include <android-base/errors.h>
 #include <android-base/file.h>
 #include <android-base/stringprintf.h>
@@ -53,69 +57,51 @@
     *new std::map<std::string, std::shared_ptr<RSA>>;
 static std::map<int, std::string>& g_monitored_paths = *new std::map<int, std::string>;
 
-static bool calculate_public_key(std::string* out, RSA* private_key) {
-    uint8_t binary_key_data[ANDROID_PUBKEY_ENCODED_SIZE];
-    if (!android_pubkey_encode(private_key, binary_key_data, sizeof(binary_key_data))) {
-        LOG(ERROR) << "Failed to convert to public key";
-        return false;
-    }
+using namespace adb::crypto;
+using namespace adb::tls;
 
-    size_t expected_length;
-    if (!EVP_EncodedLength(&expected_length, sizeof(binary_key_data))) {
-        LOG(ERROR) << "Public key too large to base64 encode";
-        return false;
-    }
-
-    out->resize(expected_length);
-    size_t actual_length = EVP_EncodeBlock(reinterpret_cast<uint8_t*>(out->data()), binary_key_data,
-                                           sizeof(binary_key_data));
-    out->resize(actual_length);
-    return true;
-}
-
-static int generate_key(const std::string& file) {
+static bool generate_key(const std::string& file) {
     LOG(INFO) << "generate_key(" << file << ")...";
 
-    mode_t old_mask;
-    FILE *f = nullptr;
-    int ret = 0;
+    auto rsa_2048 = CreateRSA2048Key();
+    if (!rsa_2048) {
+        LOG(ERROR) << "Unable to create key";
+        return false;
+    }
+    std::string pubkey;
 
-    EVP_PKEY* pkey = EVP_PKEY_new();
-    BIGNUM* exponent = BN_new();
-    RSA* rsa = RSA_new();
-    if (!pkey || !exponent || !rsa) {
-        LOG(ERROR) << "Failed to allocate key";
-        goto out;
+    RSA* rsa = EVP_PKEY_get0_RSA(rsa_2048->GetEvpPkey());
+    CHECK(rsa);
+
+    if (!CalculatePublicKey(&pubkey, rsa)) {
+        LOG(ERROR) << "failed to calculate public key";
+        return false;
     }
 
-    BN_set_word(exponent, RSA_F4);
-    RSA_generate_key_ex(rsa, 2048, exponent, nullptr);
-    EVP_PKEY_set1_RSA(pkey, rsa);
+    mode_t old_mask = umask(077);
 
-    old_mask = umask(077);
-
-    f = fopen(file.c_str(), "w");
+    std::unique_ptr<FILE, decltype(&fclose)> f(nullptr, &fclose);
+    f.reset(fopen(file.c_str(), "w"));
     if (!f) {
         PLOG(ERROR) << "Failed to open " << file;
         umask(old_mask);
-        goto out;
+        return false;
     }
 
     umask(old_mask);
 
-    if (!PEM_write_PrivateKey(f, pkey, nullptr, nullptr, 0, nullptr, nullptr)) {
-        D("Failed to write key");
-        goto out;
+    if (!PEM_write_PrivateKey(f.get(), rsa_2048->GetEvpPkey(), nullptr, nullptr, 0, nullptr,
+                              nullptr)) {
+        LOG(ERROR) << "Failed to write key";
+        return false;
     }
 
-    ret = 1;
+    if (!android::base::WriteStringToFile(pubkey, file + ".pub")) {
+        PLOG(ERROR) << "failed to write public key";
+        return false;
+    }
 
-out:
-    if (f) fclose(f);
-    EVP_PKEY_free(pkey);
-    RSA_free(rsa);
-    BN_free(exponent);
-    return ret;
+    return true;
 }
 
 static std::string hash_key(RSA* key) {
@@ -142,7 +128,8 @@
 
     RSA* key = RSA_new();
     if (!PEM_read_RSAPrivateKey(fp.get(), &key, nullptr, nullptr)) {
-        LOG(ERROR) << "Failed to read key";
+        LOG(ERROR) << "Failed to read key from '" << file << "'";
+        ERR_print_errors_fp(stderr);
         RSA_free(key);
         return nullptr;
     }
@@ -161,6 +148,7 @@
     if (g_keys.find(fingerprint) != g_keys.end()) {
         LOG(INFO) << "ignoring already-loaded key: " << file;
     } else {
+        LOG(INFO) << "Loaded fingerprint=[" << SHA256BitsToHexString(fingerprint) << "]";
         g_keys[fingerprint] = std::move(key);
     }
     return true;
@@ -218,7 +206,7 @@
     return adb_get_android_dir_path() + OS_PATH_SEPARATOR + "adbkey";
 }
 
-static bool generate_userkey() {
+static bool load_userkey() {
     std::string path = get_user_key_path();
     if (path.empty()) {
         PLOG(ERROR) << "Error getting user key filename";
@@ -293,7 +281,29 @@
     if (!privkey) {
         return false;
     }
-    return calculate_public_key(out, privkey.get());
+    return CalculatePublicKey(out, privkey.get());
+}
+
+bssl::UniquePtr<EVP_PKEY> adb_auth_get_user_privkey() {
+    std::string path = get_user_key_path();
+    if (path.empty()) {
+        PLOG(ERROR) << "Error getting user key filename";
+        return nullptr;
+    }
+
+    std::shared_ptr<RSA> rsa_privkey = read_key_file(path);
+    if (!rsa_privkey) {
+        return nullptr;
+    }
+
+    bssl::UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
+    if (!pkey) {
+        LOG(ERROR) << "Failed to allocate key";
+        return nullptr;
+    }
+
+    EVP_PKEY_set1_RSA(pkey.get(), rsa_privkey.get());
+    return pkey;
 }
 
 std::string adb_auth_get_userkey() {
@@ -311,7 +321,7 @@
 }
 
 int adb_auth_keygen(const char* filename) {
-    return (generate_key(filename) == 0);
+    return !generate_key(filename);
 }
 
 int adb_auth_pubkey(const char* filename) {
@@ -404,8 +414,8 @@
 void adb_auth_init() {
     LOG(INFO) << "adb_auth_init...";
 
-    if (!generate_userkey()) {
-        LOG(ERROR) << "Failed to generate user key";
+    if (!load_userkey()) {
+        LOG(ERROR) << "Failed to load (or generate) user key";
         return;
     }
 
@@ -470,3 +480,78 @@
     p->msg.data_length = p->payload.size();
     send_packet(p, t);
 }
+
+void adb_auth_tls_handshake(atransport* t) {
+    std::thread([t]() {
+        std::shared_ptr<RSA> key = t->Key();
+        if (key == nullptr) {
+            // Can happen if !auth_required
+            LOG(INFO) << "t->auth_key not set before handshake";
+            key = t->NextKey();
+            CHECK(key);
+        }
+
+        LOG(INFO) << "Attempting to TLS handshake";
+        bool success = t->connection()->DoTlsHandshake(key.get());
+        if (success) {
+            LOG(INFO) << "Handshake succeeded. Waiting for CNXN packet...";
+        } else {
+            LOG(INFO) << "Handshake failed. Kicking transport";
+            t->Kick();
+        }
+    }).detach();
+}
+
+// Callback given to SSL_set_cert_cb to select a certificate when server requests
+// for a certificate. This is where the server will give us a CA-issuer list, and
+// figure out if the server knows any of our public keys. We currently always return
+// 1 here to indicate success, since we always try a key here (in the case of no auth).
+// See https://commondatastorage.googleapis.com/chromium-boringssl-docs/ssl.h.html#SSL_set_cert_cb
+// for more details.
+int adb_tls_set_certificate(SSL* ssl) {
+    LOG(INFO) << __func__;
+
+    const STACK_OF(X509_NAME)* ca_list = SSL_get_client_CA_list(ssl);
+    if (ca_list == nullptr) {
+        // Either the device doesn't know any keys, or !auth_required.
+        // So let's just try with the default certificate and see what happens.
+        LOG(INFO) << "No client CA list. Trying with default certificate.";
+        return 1;
+    }
+
+    const size_t num_cas = sk_X509_NAME_num(ca_list);
+    for (size_t i = 0; i < num_cas; ++i) {
+        auto* x509_name = sk_X509_NAME_value(ca_list, i);
+        auto adbFingerprint = ParseEncodedKeyFromCAIssuer(x509_name);
+        if (!adbFingerprint.has_value()) {
+            // This could be a real CA issuer. Unfortunately, we don't support
+            // it ATM.
+            continue;
+        }
+
+        LOG(INFO) << "Checking for fingerprint match [" << *adbFingerprint << "]";
+        auto encoded_key = SHA256HexStringToBits(*adbFingerprint);
+        if (!encoded_key.has_value()) {
+            continue;
+        }
+        // Check against our list of encoded keys for a match
+        std::lock_guard<std::mutex> lock(g_keys_mutex);
+        auto rsa_priv_key = g_keys.find(*encoded_key);
+        if (rsa_priv_key != g_keys.end()) {
+            LOG(INFO) << "Got SHA256 match on a key";
+            bssl::UniquePtr<EVP_PKEY> evp_pkey(EVP_PKEY_new());
+            CHECK(EVP_PKEY_set1_RSA(evp_pkey.get(), rsa_priv_key->second.get()));
+            auto x509 = GenerateX509Certificate(evp_pkey.get());
+            auto x509_str = X509ToPEMString(x509.get());
+            auto evp_str = Key::ToPEMString(evp_pkey.get());
+            TlsConnection::SetCertAndKey(ssl, x509_str, evp_str);
+            return 1;
+        } else {
+            LOG(INFO) << "No match for [" << *adbFingerprint << "]";
+        }
+    }
+
+    // Let's just try with the default certificate anyways, because daemon might
+    // not require auth, even though it has a list of keys.
+    return 1;
+}
diff --git a/adb/client/commandline.cpp b/adb/client/commandline.cpp
index 8dd85d7..ad4e21c 100644
--- a/adb/client/commandline.cpp
+++ b/adb/client/commandline.cpp
@@ -30,6 +30,7 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <iostream>
 
 #include <memory>
 #include <string>
@@ -60,6 +61,7 @@
 #include "client/file_sync_client.h"
 #include "commandline.h"
 #include "fastdeploy.h"
+#include "incremental_server.h"
 #include "services.h"
 #include "shell_protocol.h"
 #include "sysdeps/chrono.h"
@@ -99,6 +101,7 @@
         " connect HOST[:PORT]      connect to a device via TCP/IP [default port=5555]\n"
         " disconnect [HOST[:PORT]]\n"
         "     disconnect from given TCP/IP device [default port=5555], or all\n"
+        " pair HOST[:PORT]         pair with a device for secure TCP/IP communication\n"
         " forward --list           list all forward socket connections\n"
         " forward [--no-rebind] LOCAL REMOTE\n"
         "     forward socket connection using:\n"
@@ -108,6 +111,7 @@
         "       localfilesystem:<unix domain socket name>\n"
         "       dev:<character device name>\n"
         "       jdwp:<process pid> (remote only)\n"
+        "       acceptfd:<fd> (listen only)\n"
         " forward --remove LOCAL   remove specific forward socket connection\n"
         " forward --remove-all     remove all forward socket connections\n"
         " ppp TTY [PARAMETER...]   run PPP over USB\n"
@@ -122,23 +126,29 @@
         " reverse --remove-all     remove all reverse socket connections from device\n"
         "\n"
         "file transfer:\n"
-        " push [--sync] LOCAL... REMOTE\n"
+        " push [--sync] [-zZ] LOCAL... REMOTE\n"
         "     copy local files/directories to device\n"
         "     --sync: only push files that are newer on the host than the device\n"
-        " pull [-a] REMOTE... LOCAL\n"
+        "     -z: enable compression\n"
+        "     -Z: disable compression\n"
+        " pull [-azZ] REMOTE... LOCAL\n"
         "     copy files/dirs from device\n"
         "     -a: preserve file timestamp and mode\n"
-        " sync [all|data|odm|oem|product_services|product|system|vendor]\n"
+        "     -z: enable compression\n"
+        "     -Z: disable compression\n"
+        " sync [-lzZ] [all|data|odm|oem|product|system|system_ext|vendor]\n"
         "     sync a local build from $ANDROID_PRODUCT_OUT to the device (default all)\n"
-        "     -l: list but don't copy\n"
+        "     -l: list files that would be copied, but don't copy them\n"
+        "     -z: enable compression\n"
+        "     -Z: disable compression\n"
         "\n"
         "shell:\n"
         " shell [-e ESCAPE] [-n] [-Tt] [-x] [COMMAND...]\n"
         "     run remote shell command (interactive shell if no command given)\n"
         "     -e: choose escape character, or \"none\"; default '~'\n"
         "     -n: don't read from stdin\n"
-        "     -T: disable PTY allocation\n"
-        "     -t: force PTY allocation\n"
+        "     -T: disable pty allocation\n"
+        "     -t: allocate a pty if on a tty (-tt: force pty allocation)\n"
         "     -x: disable remote exit codes and stdout/stderr separation\n"
         " emu COMMAND              run emulator console command\n"
         "\n"
@@ -154,6 +164,7 @@
         "     -d: allow version code downgrade (debuggable packages only)\n"
         "     -p: partial application install (install-multiple only)\n"
         "     -g: grant all runtime permissions\n"
+        "     --abi ABI: override platform's default ABI\n"
         "     --instant: cause the app to be installed as an ephemeral install app\n"
         "     --no-streaming: always push APK to device and invoke Package Manager as separate steps\n"
         "     --streaming: force streaming APK directly into Package Manager\n"
@@ -165,14 +176,12 @@
 #ifndef _WIN32
         "     --local-agent: locate agent files from local source build (instead of SDK location)\n"
 #endif
+        "     (See also `adb shell pm help` for more options.)\n"
         //TODO--installlog <filename>
         " uninstall [-k] PACKAGE\n"
         "     remove this app package from the device\n"
         "     '-k': keep the data and cache directories\n"
         "\n"
-        "backup/restore:\n"
-        "   to show usage run \"adb shell bu help\"\n"
-        "\n"
         "debugging:\n"
         " bugreport [PATH]\n"
         "     write bugreport to given PATH [default=bugreport.zip];\n"
@@ -257,13 +266,8 @@
 }
 #endif
 
-// Reads from |fd| and prints received data. If |use_shell_protocol| is true
-// this expects that incoming data will use the shell protocol, in which case
-// stdout/stderr are routed independently and the remote exit code will be
-// returned.
-// if |callback| is non-null, stdout/stderr output will be handled by it.
-int read_and_dump(int fd, bool use_shell_protocol = false,
-                  StandardStreamsCallbackInterface* callback = &DEFAULT_STANDARD_STREAMS_CALLBACK) {
+int read_and_dump(borrowed_fd fd, bool use_shell_protocol,
+                  StandardStreamsCallbackInterface* callback) {
     int exit_code = 0;
     if (fd < 0) return exit_code;
 
@@ -305,9 +309,9 @@
             }
             length = protocol->data_length();
         } else {
-            D("read_and_dump(): pre adb_read(fd=%d)", fd);
+            D("read_and_dump(): pre adb_read(fd=%d)", fd.get());
             length = adb_read(fd, raw_buffer, sizeof(raw_buffer));
-            D("read_and_dump(): post adb_read(fd=%d): length=%d", fd, length);
+            D("read_and_dump(): post adb_read(fd=%d): length=%d", fd.get(), length);
             if (length <= 0) {
                 break;
             }
@@ -358,8 +362,9 @@
 #endif
 }
 
-void copy_to_file(int inFd, int outFd) {
-    std::vector<char> buf(32 * 1024);
+bool copy_to_file(int inFd, int outFd) {
+    bool result = true;
+    std::vector<char> buf(64 * 1024);
     int len;
     long total = 0;
     int old_stdin_mode = -1;
@@ -381,6 +386,7 @@
         }
         if (len < 0) {
             D("copy_to_file(): read failed: %s", strerror(errno));
+            result = false;
             break;
         }
         if (outFd == STDOUT_FILENO) {
@@ -394,7 +400,8 @@
 
     stdinout_raw_epilogue(inFd, outFd, old_stdin_mode, old_stdout_mode);
 
-    D("copy_to_file() finished after %lu bytes", total);
+    D("copy_to_file() finished with %s after %lu bytes", result ? "success" : "failure", total);
+    return result;
 }
 
 static void send_window_size_change(int fd, std::unique_ptr<ShellProtocol>& shell) {
@@ -778,17 +785,16 @@
         error_exit("abb is not supported by the device");
     }
 
+    optind = 1;  // argv[0] is always "abb", so set `optind` appropriately.
+
     // Defaults.
     constexpr char escape_char = '~';  // -e
     constexpr bool use_shell_protocol = true;
     constexpr auto shell_type_arg = kShellServiceArgRaw;
     constexpr bool empty_command = false;
 
-    std::string service_string("abb:");
-    for (auto i = optind; i < argc; ++i) {
-        service_string.append(argv[i]);
-        service_string.push_back(ABB_ARG_DELIMETER);
-    }
+    std::vector<const char*> args(argv + optind, argv + argc);
+    std::string service_string = "abb:" + android::base::Join(args, ABB_ARG_DELIMETER);
 
     D("abb -e 0x%x [%*.s]\n", escape_char, static_cast<int>(service_string.size()),
       service_string.data());
@@ -797,6 +803,15 @@
                        service_string);
 }
 
+static int adb_shell_noinput(int argc, const char** argv) {
+#if !defined(_WIN32)
+    unique_fd fd(adb_open("/dev/null", O_RDONLY));
+    CHECK_NE(STDIN_FILENO, fd.get());
+    dup2(fd.get(), STDIN_FILENO);
+#endif
+    return adb_shell(argc, argv);
+}
+
 static int adb_sideload_legacy(const char* filename, int in_fd, int size) {
     std::string error;
     unique_fd out_fd(adb_connect(android::base::StringPrintf("sideload:%d", size), &error));
@@ -887,7 +902,7 @@
             return -1;
         }
         fprintf(stderr, "adb: trying pre-KitKat sideload method...\n");
-        return adb_sideload_legacy(filename, package_fd, static_cast<int>(sb.st_size));
+        return adb_sideload_legacy(filename, package_fd.get(), static_cast<int>(sb.st_size));
     }
 
     int opt = SIDELOAD_HOST_BLOCK_SIZE;
@@ -1123,8 +1138,8 @@
         return false;
     }
 
+    fwrite(buf, 1, sizeof(buf) - bytes_left, stdout);
     fflush(stdout);
-    WriteFdExactly(STDOUT_FILENO, buf, sizeof(buf) - bytes_left);
     if (cur != buf && strstr(buf, "restarting") == nullptr) {
         return true;
     }
@@ -1142,7 +1157,7 @@
     // If we were using a specific transport ID, there's nothing we can wait for.
     if (previous_id == 0) {
         adb_set_transport(previous_type, previous_serial, 0);
-        wait_for_device("wait-for-device", 3000ms);
+        wait_for_device("wait-for-device", 6000ms);
     }
 
     return true;
@@ -1207,14 +1222,14 @@
     return send_shell_command(cmd);
 }
 
-static void write_zeros(int bytes, int fd) {
+static void write_zeros(int bytes, borrowed_fd fd) {
     int old_stdin_mode = -1;
     int old_stdout_mode = -1;
     std::vector<char> buf(bytes);
 
-    D("write_zeros(%d) -> %d", bytes, fd);
+    D("write_zeros(%d) -> %d", bytes, fd.get());
 
-    stdinout_raw_prologue(-1, fd, old_stdin_mode, old_stdout_mode);
+    stdinout_raw_prologue(-1, fd.get(), old_stdin_mode, old_stdout_mode);
 
     if (fd == STDOUT_FILENO) {
         fwrite(buf.data(), 1, bytes, stdout);
@@ -1223,12 +1238,14 @@
         adb_write(fd, buf.data(), bytes);
     }
 
-    stdinout_raw_prologue(-1, fd, old_stdin_mode, old_stdout_mode);
+    stdinout_raw_prologue(-1, fd.get(), old_stdin_mode, old_stdout_mode);
 
     D("write_zeros() finished");
 }
 
 static int backup(int argc, const char** argv) {
+    fprintf(stdout, "WARNING: adb backup is deprecated and may be removed in a future release\n");
+
     const char* filename = "backup.ab";
 
     /* find, extract, and use any -f argument */
@@ -1278,6 +1295,8 @@
 }
 
 static int restore(int argc, const char** argv) {
+    fprintf(stdout, "WARNING: adb restore is deprecated and may be removed in a future release\n");
+
     if (argc != 2) error_exit("restore requires an argument");
 
     const char* filename = argv[1];
@@ -1308,8 +1327,12 @@
 }
 
 static void parse_push_pull_args(const char** arg, int narg, std::vector<const char*>* srcs,
-                                 const char** dst, bool* copy_attrs, bool* sync) {
+                                 const char** dst, bool* copy_attrs, bool* sync, bool* compressed) {
     *copy_attrs = false;
+    const char* adb_compression = getenv("ADB_COMPRESSION");
+    if (adb_compression && strcmp(adb_compression, "0") == 0) {
+        *compressed = false;
+    }
 
     srcs->clear();
     bool ignore_flags = false;
@@ -1321,6 +1344,14 @@
                 // Silently ignore for backwards compatibility.
             } else if (!strcmp(*arg, "-a")) {
                 *copy_attrs = true;
+            } else if (!strcmp(*arg, "-z")) {
+                if (compressed != nullptr) {
+                    *compressed = true;
+                }
+            } else if (!strcmp(*arg, "-Z")) {
+                if (compressed != nullptr) {
+                    *compressed = false;
+                }
             } else if (!strcmp(*arg, "--sync")) {
                 if (sync != nullptr) {
                     *sync = true;
@@ -1410,6 +1441,26 @@
 #endif
 }
 
+static bool _is_valid_os_fd(int fd) {
+    // Disallow invalid FDs and stdin/out/err as well.
+    if (fd < 3) {
+        return false;
+    }
+#ifdef _WIN32
+    auto handle = (HANDLE)fd;
+    DWORD info = 0;
+    if (GetHandleInformation(handle, &info) == 0) {
+        return false;
+    }
+#else
+    int flags = fcntl(fd, F_GETFD);
+    if (flags == -1) {
+        return false;
+    }
+#endif
+    return true;
+}
+
 int adb_commandline(int argc, const char** argv) {
     bool no_daemon = false;
     bool is_daemon = false;
@@ -1615,19 +1666,32 @@
         return adb_query_command(query);
     }
     else if (!strcmp(argv[0], "connect")) {
-        if (argc != 2) error_exit("usage: adb connect <host>[:<port>]");
+        if (argc != 2) error_exit("usage: adb connect HOST[:PORT]");
 
         std::string query = android::base::StringPrintf("host:connect:%s", argv[1]);
         return adb_query_command(query);
     }
     else if (!strcmp(argv[0], "disconnect")) {
-        if (argc > 2) error_exit("usage: adb disconnect [<host>[:<port>]]");
+        if (argc > 2) error_exit("usage: adb disconnect [HOST[:PORT]]");
 
         std::string query = android::base::StringPrintf("host:disconnect:%s",
                                                         (argc == 2) ? argv[1] : "");
         return adb_query_command(query);
     } else if (!strcmp(argv[0], "abb")) {
         return adb_abb(argc, argv);
+    } else if (!strcmp(argv[0], "pair")) {
+        if (argc != 2) error_exit("usage: adb pair <host>[:<port>]");
+
+        std::string password;
+        printf("Enter pairing code: ");
+        fflush(stdout);
+        if (!std::getline(std::cin, password) || password.empty()) {
+            error_exit("No pairing code provided");
+        }
+        std::string query =
+                android::base::StringPrintf("host:pair:%s:%s", password.c_str(), argv[1]);
+
+        return adb_query_command(query);
     } else if (!strcmp(argv[0], "emu")) {
         return adb_send_emulator_command(argc, argv, serial);
     } else if (!strcmp(argv[0], "shell")) {
@@ -1703,10 +1767,27 @@
             error_exit("tcpip: invalid port: %s", argv[1]);
         }
         return adb_connect_command(android::base::StringPrintf("tcpip:%d", port));
+    } else if (!strcmp(argv[0], "remount")) {
+        FeatureSet features;
+        std::string error;
+        if (!adb_get_feature_set(&features, &error)) {
+            fprintf(stderr, "error: %s\n", error.c_str());
+            return 1;
+        }
+
+        if (CanUseFeature(features, kFeatureRemountShell)) {
+            std::vector<const char*> args = {"shell"};
+            args.insert(args.cend(), argv, argv + argc);
+            return adb_shell_noinput(args.size(), args.data());
+        } else if (argc > 1) {
+            auto command = android::base::StringPrintf("%s:%s", argv[0], argv[1]);
+            return adb_connect_command(command);
+        } else {
+            return adb_connect_command("remount:");
+        }
     }
     // clang-format off
-    else if (!strcmp(argv[0], "remount") ||
-             !strcmp(argv[0], "reboot") ||
+    else if (!strcmp(argv[0], "reboot") ||
              !strcmp(argv[0], "reboot-bootloader") ||
              !strcmp(argv[0], "reboot-fastboot") ||
              !strcmp(argv[0], "usb") ||
@@ -1738,41 +1819,33 @@
         // Determine the <host-prefix> for this command.
         std::string host_prefix;
         if (reverse) {
-            host_prefix = "reverse";
+            host_prefix = "reverse:";
         } else {
-            if (serial) {
-                host_prefix = android::base::StringPrintf("host-serial:%s", serial);
-            } else if (transport_type == kTransportUsb) {
-                host_prefix = "host-usb";
-            } else if (transport_type == kTransportLocal) {
-                host_prefix = "host-local";
-            } else {
-                host_prefix = "host";
-            }
+            host_prefix = "host:";
         }
 
         std::string cmd, error_message;
         if (strcmp(argv[0], "--list") == 0) {
             if (argc != 1) error_exit("--list doesn't take any arguments");
-            return adb_query_command(host_prefix + ":list-forward");
+            return adb_query_command(host_prefix + "list-forward");
         } else if (strcmp(argv[0], "--remove-all") == 0) {
             if (argc != 1) error_exit("--remove-all doesn't take any arguments");
-            cmd = host_prefix + ":killforward-all";
+            cmd = "killforward-all";
         } else if (strcmp(argv[0], "--remove") == 0) {
             // forward --remove <local>
             if (argc != 2) error_exit("--remove requires an argument");
-            cmd = host_prefix + ":killforward:" + argv[1];
+            cmd = std::string("killforward:") + argv[1];
         } else if (strcmp(argv[0], "--no-rebind") == 0) {
             // forward --no-rebind <local> <remote>
             if (argc != 3) error_exit("--no-rebind takes two arguments");
             if (forward_targets_are_valid(argv[1], argv[2], &error_message)) {
-                cmd = host_prefix + ":forward:norebind:" + argv[1] + ";" + argv[2];
+                cmd = std::string("forward:norebind:") + argv[1] + ";" + argv[2];
             }
         } else {
             // forward <local> <remote>
             if (argc != 2) error_exit("forward takes two arguments");
             if (forward_targets_are_valid(argv[0], argv[1], &error_message)) {
-                cmd = host_prefix + ":forward:" + argv[0] + ";" + argv[1];
+                cmd = std::string("forward:") + argv[0] + ";" + argv[1];
             }
         }
 
@@ -1780,7 +1853,7 @@
             error_exit("error: %s", error_message.c_str());
         }
 
-        unique_fd fd(adb_connect(cmd, &error_message));
+        unique_fd fd(adb_connect(nullptr, host_prefix + cmd, &error_message, true));
         if (fd < 0 || !adb_status(fd.get(), &error_message)) {
             error_exit("error: %s", error_message.c_str());
         }
@@ -1801,20 +1874,22 @@
     } else if (!strcmp(argv[0], "push")) {
         bool copy_attrs = false;
         bool sync = false;
+        bool compressed = true;
         std::vector<const char*> srcs;
         const char* dst = nullptr;
 
-        parse_push_pull_args(&argv[1], argc - 1, &srcs, &dst, &copy_attrs, &sync);
+        parse_push_pull_args(&argv[1], argc - 1, &srcs, &dst, &copy_attrs, &sync, &compressed);
         if (srcs.empty() || !dst) error_exit("push requires an argument");
-        return do_sync_push(srcs, dst, sync) ? 0 : 1;
+        return do_sync_push(srcs, dst, sync, compressed) ? 0 : 1;
     } else if (!strcmp(argv[0], "pull")) {
         bool copy_attrs = false;
+        bool compressed = true;
         std::vector<const char*> srcs;
         const char* dst = ".";
 
-        parse_push_pull_args(&argv[1], argc - 1, &srcs, &dst, &copy_attrs, nullptr);
+        parse_push_pull_args(&argv[1], argc - 1, &srcs, &dst, &copy_attrs, nullptr, &compressed);
         if (srcs.empty()) error_exit("pull requires an argument");
-        return do_sync_pull(srcs, dst, copy_attrs) ? 0 : 1;
+        return do_sync_pull(srcs, dst, copy_attrs, compressed) ? 0 : 1;
     } else if (!strcmp(argv[0], "install")) {
         if (argc < 2) error_exit("install requires an argument");
         return install_app(argc, argv);
@@ -1822,7 +1897,7 @@
         if (argc < 2) error_exit("install-multiple requires an argument");
         return install_multiple_app(argc, argv);
     } else if (!strcmp(argv[0], "install-multi-package")) {
-        if (argc < 3) error_exit("install-multi-package requires an argument");
+        if (argc < 2) error_exit("install-multi-package requires an argument");
         return install_multi_package(argc, argv);
     } else if (!strcmp(argv[0], "uninstall")) {
         if (argc < 2) error_exit("uninstall requires an argument");
@@ -1830,27 +1905,47 @@
     } else if (!strcmp(argv[0], "sync")) {
         std::string src;
         bool list_only = false;
-        if (argc < 2) {
-            // No partition specified: sync all of them.
-        } else if (argc >= 2 && strcmp(argv[1], "-l") == 0) {
-            list_only = true;
-            if (argc == 3) src = argv[2];
-        } else if (argc == 2) {
-            src = argv[1];
-        } else {
-            error_exit("usage: adb sync [-l] [PARTITION]");
+        bool compressed = true;
+
+        const char* adb_compression = getenv("ADB_COMPRESSION");
+        if (adb_compression && strcmp(adb_compression, "0") == 0) {
+            compressed = false;
         }
 
-        if (src.empty()) src = "all";
-        std::vector<std::string> partitions{"data",   "odm",   "oem", "product", "product_services",
-                                            "system", "vendor"};
+        int opt;
+        while ((opt = getopt(argc, const_cast<char**>(argv), "lzZ")) != -1) {
+            switch (opt) {
+                case 'l':
+                    list_only = true;
+                    break;
+                case 'z':
+                    compressed = true;
+                    break;
+                case 'Z':
+                    compressed = false;
+                    break;
+                default:
+                    error_exit("usage: adb sync [-lzZ] [PARTITION]");
+            }
+        }
+
+        if (optind == argc) {
+            src = "all";
+        } else if (optind + 1 == argc) {
+            src = argv[optind];
+        } else {
+            error_exit("usage: adb sync [-lzZ] [PARTITION]");
+        }
+
+        std::vector<std::string> partitions{"data",   "odm",        "oem",   "product",
+                                            "system", "system_ext", "vendor"};
         bool found = false;
         for (const auto& partition : partitions) {
             if (src == "all" || src == partition) {
                 std::string src_dir{product_file(partition)};
                 if (!directory_exists(src_dir)) continue;
                 found = true;
-                if (!do_sync_sync(src_dir, "/" + partition, list_only)) return 1;
+                if (!do_sync_sync(src_dir, "/" + partition, list_only, compressed)) return 1;
             }
         }
         if (!found) error_exit("don't know how to sync %s partition", src.c_str());
@@ -1891,7 +1986,10 @@
     } else if (!strcmp(argv[0], "track-jdwp")) {
         return adb_connect_command("track-jdwp");
     } else if (!strcmp(argv[0], "track-devices")) {
-        return adb_connect_command("host:track-devices");
+        if (argc > 2 || (argc == 2 && strcmp(argv[1], "-l"))) {
+            error_exit("usage: adb track-devices [-l]");
+        }
+        return adb_connect_command(argc == 2 ? "host:track-devices-l" : "host:track-devices");
     } else if (!strcmp(argv[0], "raw")) {
         if (argc != 2) {
             error_exit("usage: adb raw SERVICE");
@@ -1938,6 +2036,29 @@
                 error_exit("usage: adb reconnect [device|offline]");
             }
         }
+    } else if (!strcmp(argv[0], "inc-server")) {
+        if (argc < 4) {
+#ifdef _WIN32
+            error_exit("usage: adb inc-server CONNECTION_HANDLE OUTPUT_HANDLE FILE1 FILE2 ...");
+#else
+            error_exit("usage: adb inc-server CONNECTION_FD OUTPUT_FD FILE1 FILE2 ...");
+#endif
+        }
+        int connection_fd = atoi(argv[1]);
+        if (!_is_valid_os_fd(connection_fd)) {
+            error_exit("Invalid connection_fd number given: %d", connection_fd);
+        }
+
+        connection_fd = adb_register_socket(connection_fd);
+        close_on_exec(connection_fd);
+
+        int output_fd = atoi(argv[2]);
+        if (!_is_valid_os_fd(output_fd)) {
+            error_exit("Invalid output_fd number given: %d", output_fd);
+        }
+        output_fd = adb_register_socket(output_fd);
+        close_on_exec(output_fd);
+        return incremental::serve(connection_fd, output_fd, argc - 3, argv + 3);
     }
 
     error_exit("unknown command %s", argv[0]);
diff --git a/adb/client/commandline.h b/adb/client/commandline.h
index 6cfd4f7..b9dee56 100644
--- a/adb/client/commandline.h
+++ b/adb/client/commandline.h
@@ -17,7 +17,11 @@
 #ifndef COMMANDLINE_H
 #define COMMANDLINE_H
 
+#include <android-base/strings.h>
+
 #include "adb.h"
+#include "adb_client.h"
+#include "adb_unique_fd.h"
 
 // Callback used to handle the standard streams (stdout and stderr) sent by the
 // device's upon receiving a command.
@@ -96,7 +100,7 @@
 
 int adb_commandline(int argc, const char** argv);
 
-void copy_to_file(int inFd, int outFd);
+bool copy_to_file(int inFd, int outFd);
 
 // Connects to the device "shell" service with |command| and prints the
 // resulting output.
@@ -105,4 +109,25 @@
         const std::string& command, bool disable_shell_protocol = false,
         StandardStreamsCallbackInterface* callback = &DEFAULT_STANDARD_STREAMS_CALLBACK);
 
+// Reads from |fd| and prints received data. If |use_shell_protocol| is true
+// this expects that incoming data will use the shell protocol, in which case
+// stdout/stderr are routed independently and the remote exit code will be
+// returned.
+// if |callback| is non-null, stdout/stderr output will be handled by it.
+int read_and_dump(borrowed_fd fd, bool use_shell_protocol = false,
+                  StandardStreamsCallbackInterface* callback = &DEFAULT_STANDARD_STREAMS_CALLBACK);
+
+// Connects to the device "abb" service with |command| and returns the fd.
+template <typename ContainerT>
+unique_fd send_abb_exec_command(const ContainerT& command_args, std::string* error) {
+    std::string service_string = "abb_exec:" + android::base::Join(command_args, ABB_ARG_DELIMETER);
+
+    unique_fd fd(adb_connect(service_string, error));
+    if (fd < 0) {
+        fprintf(stderr, "adb: failed to run abb_exec. Error: %s\n", error->c_str());
+        return unique_fd{};
+    }
+    return fd;
+}
+
 #endif  // COMMANDLINE_H
diff --git a/adb/client/console.cpp b/adb/client/console.cpp
index 1dbb6e2..d10f4de 100644
--- a/adb/client/console.cpp
+++ b/adb/client/console.cpp
@@ -71,7 +71,7 @@
         return -1;
     }
 
-    int port;
+    int port = -1;
     size_t emulator_count = 0;
     for (const auto& device : android::base::Split(devices, "\n")) {
         if (sscanf(device.c_str(), "emulator-%d", &port) == 1) {
diff --git a/adb/client/fastdeploy.cpp b/adb/client/fastdeploy.cpp
index f4e8664..de82e14 100644
--- a/adb/client/fastdeploy.cpp
+++ b/adb/client/fastdeploy.cpp
@@ -27,124 +27,116 @@
 #include "androidfw/ZipFileRO.h"
 #include "client/file_sync_client.h"
 #include "commandline.h"
+#include "deployagent.inc"        // Generated include via build rule.
+#include "deployagentscript.inc"  // Generated include via build rule.
+#include "fastdeploy/deploypatchgenerator/deploy_patch_generator.h"
+#include "fastdeploy/deploypatchgenerator/patch_utils.h"
+#include "fastdeploy/proto/ApkEntry.pb.h"
 #include "fastdeploycallbacks.h"
 #include "sysdeps.h"
 
 #include "adb_utils.h"
 
-static constexpr long kRequiredAgentVersion = 0x00000002;
+static constexpr long kRequiredAgentVersion = 0x00000003;
 
-static constexpr const char* kDeviceAgentPath = "/data/local/tmp/";
+static constexpr int kPackageMissing = 3;
+static constexpr int kInvalidAgentVersion = 4;
 
-static bool g_use_localagent = false;
+static constexpr const char* kDeviceAgentFile = "/data/local/tmp/deployagent.jar";
+static constexpr const char* kDeviceAgentScript = "/data/local/tmp/deployagent";
 
-long get_agent_version() {
-    std::vector<char> versionOutputBuffer;
-    std::vector<char> versionErrorBuffer;
+static constexpr bool g_verbose_timings = false;
+static FastDeploy_AgentUpdateStrategy g_agent_update_strategy =
+        FastDeploy_AgentUpdateDifferentVersion;
 
-    int statusCode = capture_shell_command("/data/local/tmp/deployagent version",
-                                           &versionOutputBuffer, &versionErrorBuffer);
-    long version = -1;
+using APKMetaData = com::android::fastdeploy::APKMetaData;
 
-    if (statusCode == 0 && versionOutputBuffer.size() > 0) {
-        version = strtol((char*)versionOutputBuffer.data(), NULL, 16);
+namespace {
+
+struct TimeReporter {
+    TimeReporter(const char* label) : label_(label) {}
+    ~TimeReporter() {
+        if (g_verbose_timings) {
+            auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(
+                    std::chrono::steady_clock::now() - start_);
+            fprintf(stderr, "%s finished in %lldms\n", label_,
+                    static_cast<long long>(duration.count()));
+        }
     }
 
-    return version;
-}
+  private:
+    const char* label_;
+    std::chrono::steady_clock::time_point start_ = std::chrono::steady_clock::now();
+};
+#define REPORT_FUNC_TIME() TimeReporter reporter(__func__)
+
+struct FileDeleter {
+    FileDeleter(const char* path) : path_(path) {}
+    ~FileDeleter() { adb_unlink(path_); }
+
+  private:
+    const char* const path_;
+};
+
+}  // namespace
 
 int get_device_api_level() {
-    std::vector<char> sdkVersionOutputBuffer;
-    std::vector<char> sdkVersionErrorBuffer;
-    int api_level = -1;
+    static const int api_level = [] {
+        REPORT_FUNC_TIME();
+        std::vector<char> sdk_version_output_buffer;
+        std::vector<char> sdk_version_error_buffer;
+        int api_level = -1;
 
-    int statusCode = capture_shell_command("getprop ro.build.version.sdk", &sdkVersionOutputBuffer,
-                                           &sdkVersionErrorBuffer);
-    if (statusCode == 0 && sdkVersionOutputBuffer.size() > 0) {
-        api_level = strtol((char*)sdkVersionOutputBuffer.data(), NULL, 10);
-    }
+        int status_code =
+                capture_shell_command("getprop ro.build.version.sdk", &sdk_version_output_buffer,
+                                      &sdk_version_error_buffer);
+        if (status_code == 0 && sdk_version_output_buffer.size() > 0) {
+            api_level = strtol((char*)sdk_version_output_buffer.data(), nullptr, 10);
+        }
 
+        return api_level;
+    }();
     return api_level;
 }
 
-void fastdeploy_set_local_agent(bool use_localagent) {
-    g_use_localagent = use_localagent;
+void fastdeploy_set_agent_update_strategy(FastDeploy_AgentUpdateStrategy agent_update_strategy) {
+    g_agent_update_strategy = agent_update_strategy;
 }
 
-// local_path - must start with a '/' and be relative to $ANDROID_PRODUCT_OUT
-static std::string get_agent_component_host_path(const char* local_path, const char* sdk_path) {
-    std::string adb_dir = android::base::GetExecutableDirectory();
-    if (adb_dir.empty()) {
-        error_exit("Could not determine location of adb!");
-    }
-
-    if (g_use_localagent) {
-        const char* product_out = getenv("ANDROID_PRODUCT_OUT");
-        if (product_out == nullptr) {
-            error_exit("Could not locate %s because $ANDROID_PRODUCT_OUT is not defined",
-                       local_path);
-        }
-        return android::base::StringPrintf("%s%s", product_out, local_path);
-    } else {
-        return adb_dir + sdk_path;
-    }
-}
-
-static bool deploy_agent(bool checkTimeStamps) {
+static void push_to_device(const void* data, size_t byte_count, const char* dst, bool sync) {
     std::vector<const char*> srcs;
-    std::string jar_path =
-            get_agent_component_host_path("/system/framework/deployagent.jar", "/deployagent.jar");
-    std::string script_path =
-            get_agent_component_host_path("/system/bin/deployagent", "/deployagent");
-    srcs.push_back(jar_path.c_str());
-    srcs.push_back(script_path.c_str());
+    TemporaryFile tf;
+    android::base::WriteFully(tf.fd, data, byte_count);
+    srcs.push_back(tf.path);
+    // On Windows, the file needs to be flushed before pushing to device,
+    // but can't be removed until after the push.
+    unix_close(tf.release());
 
-    if (do_sync_push(srcs, kDeviceAgentPath, checkTimeStamps)) {
-        // on windows the shell script might have lost execute permission
-        // so need to set this explicitly
-        const char* kChmodCommandPattern = "chmod 777 %sdeployagent";
-        std::string chmodCommand =
-                android::base::StringPrintf(kChmodCommandPattern, kDeviceAgentPath);
-        int ret = send_shell_command(chmodCommand);
-        if (ret != 0) {
-            error_exit("Error executing %s returncode: %d", chmodCommand.c_str(), ret);
-        }
-    } else {
-        error_exit("Error pushing agent files to device");
+    if (!do_sync_push(srcs, dst, sync, true)) {
+        error_exit("Failed to push fastdeploy agent to device.");
+    }
+}
+
+static bool deploy_agent(bool check_time_stamps) {
+    REPORT_FUNC_TIME();
+
+    push_to_device(kDeployAgent, sizeof(kDeployAgent), kDeviceAgentFile, check_time_stamps);
+    push_to_device(kDeployAgentScript, sizeof(kDeployAgentScript), kDeviceAgentScript,
+                   check_time_stamps);
+
+    // on windows the shell script might have lost execute permission
+    // so need to set this explicitly
+    const char* kChmodCommandPattern = "chmod 777 %s";
+    std::string chmod_command =
+            android::base::StringPrintf(kChmodCommandPattern, kDeviceAgentScript);
+    int ret = send_shell_command(chmod_command);
+    if (ret != 0) {
+        error_exit("Error executing %s returncode: %d", chmod_command.c_str(), ret);
     }
 
     return true;
 }
 
-void update_agent(FastDeploy_AgentUpdateStrategy agentUpdateStrategy) {
-    long agent_version = get_agent_version();
-    switch (agentUpdateStrategy) {
-        case FastDeploy_AgentUpdateAlways:
-            deploy_agent(false);
-            break;
-        case FastDeploy_AgentUpdateNewerTimeStamp:
-            deploy_agent(true);
-            break;
-        case FastDeploy_AgentUpdateDifferentVersion:
-            if (agent_version != kRequiredAgentVersion) {
-                if (agent_version < 0) {
-                    printf("Could not detect agent on device, deploying\n");
-                } else {
-                    printf("Device agent version is (%ld), (%ld) is required, re-deploying\n",
-                           agent_version, kRequiredAgentVersion);
-                }
-                deploy_agent(false);
-            }
-            break;
-    }
-
-    agent_version = get_agent_version();
-    if (agent_version != kRequiredAgentVersion) {
-        error_exit("After update agent version remains incorrect! Expected %ld but version is %ld",
-                   kRequiredAgentVersion, agent_version);
-    }
-}
-
 static std::string get_string_from_utf16(const char16_t* input, int input_len) {
     ssize_t utf8_length = utf16_to_utf8_length(input, input_len);
     if (utf8_length <= 0) {
@@ -156,29 +148,29 @@
     return utf8;
 }
 
-static std::string get_packagename_from_apk(const char* apkPath) {
+static std::string get_package_name_from_apk(const char* apk_path) {
 #undef open
-    std::unique_ptr<android::ZipFileRO> zipFile(android::ZipFileRO::open(apkPath));
+    std::unique_ptr<android::ZipFileRO> zip_file((android::ZipFileRO::open)(apk_path));
 #define open ___xxx_unix_open
-    if (zipFile == nullptr) {
-        perror_exit("Could not open %s", apkPath);
+    if (zip_file == nullptr) {
+        perror_exit("Could not open %s", apk_path);
     }
-    android::ZipEntryRO entry = zipFile->findEntryByName("AndroidManifest.xml");
+    android::ZipEntryRO entry = zip_file->findEntryByName("AndroidManifest.xml");
     if (entry == nullptr) {
-        error_exit("Could not find AndroidManifest.xml inside %s", apkPath);
+        error_exit("Could not find AndroidManifest.xml inside %s", apk_path);
     }
     uint32_t manifest_len = 0;
-    if (!zipFile->getEntryInfo(entry, NULL, &manifest_len, NULL, NULL, NULL, NULL)) {
-        error_exit("Could not read AndroidManifest.xml inside %s", apkPath);
+    if (!zip_file->getEntryInfo(entry, NULL, &manifest_len, NULL, NULL, NULL, NULL)) {
+        error_exit("Could not read AndroidManifest.xml inside %s", apk_path);
     }
     std::vector<char> manifest_data(manifest_len);
-    if (!zipFile->uncompressEntry(entry, manifest_data.data(), manifest_len)) {
-        error_exit("Could not uncompress AndroidManifest.xml inside %s", apkPath);
+    if (!zip_file->uncompressEntry(entry, manifest_data.data(), manifest_len)) {
+        error_exit("Could not uncompress AndroidManifest.xml inside %s", apk_path);
     }
     android::ResXMLTree tree;
     android::status_t setto_status = tree.setTo(manifest_data.data(), manifest_len, true);
     if (setto_status != android::OK) {
-        error_exit("Could not parse AndroidManifest.xml inside %s", apkPath);
+        error_exit("Could not parse AndroidManifest.xml inside %s", apk_path);
     }
     android::ResXMLParser::event_code_t code;
     while ((code = tree.next()) != android::ResXMLParser::BAD_DOCUMENT &&
@@ -219,99 +211,97 @@
                 break;
         }
     }
-    error_exit("Could not find package name tag in AndroidManifest.xml inside %s", apkPath);
+    error_exit("Could not find package name tag in AndroidManifest.xml inside %s", apk_path);
 }
 
-void extract_metadata(const char* apkPath, FILE* outputFp) {
-    std::string packageName = get_packagename_from_apk(apkPath);
-    const char* kAgentExtractCommandPattern = "/data/local/tmp/deployagent extract %s";
-    std::string extractCommand =
-            android::base::StringPrintf(kAgentExtractCommandPattern, packageName.c_str());
+static long parse_agent_version(const std::vector<char>& version_buffer) {
+    long version = -1;
+    if (!version_buffer.empty()) {
+        version = strtol((char*)version_buffer.data(), NULL, 16);
+    }
+    return version;
+}
 
-    std::vector<char> extractErrorBuffer;
-    DeployAgentFileCallback cb(outputFp, &extractErrorBuffer);
-    int returnCode = send_shell_command(extractCommand, false, &cb);
+static void update_agent_if_necessary() {
+    switch (g_agent_update_strategy) {
+        case FastDeploy_AgentUpdateAlways:
+            deploy_agent(/*check_time_stamps=*/false);
+            break;
+        case FastDeploy_AgentUpdateNewerTimeStamp:
+            deploy_agent(/*check_time_stamps=*/true);
+            break;
+        default:
+            break;
+    }
+}
+
+std::optional<APKMetaData> extract_metadata(const char* apk_path) {
+    // Update agent if there is a command line argument forcing to do so.
+    update_agent_if_necessary();
+
+    REPORT_FUNC_TIME();
+
+    std::string package_name = get_package_name_from_apk(apk_path);
+
+    // Dump apk command checks the required vs current agent version and if they match then returns
+    // the APK dump for package. Doing this in a single call saves round-trip and agent launch time.
+    constexpr const char* kAgentDumpCommandPattern = "/data/local/tmp/deployagent dump %ld %s";
+    std::string dump_command = android::base::StringPrintf(
+            kAgentDumpCommandPattern, kRequiredAgentVersion, package_name.c_str());
+
+    std::vector<char> dump_out_buffer;
+    std::vector<char> dump_error_buffer;
+    int returnCode =
+            capture_shell_command(dump_command.c_str(), &dump_out_buffer, &dump_error_buffer);
+    if (returnCode >= kInvalidAgentVersion) {
+        // Agent has wrong version or missing.
+        long agent_version = parse_agent_version(dump_out_buffer);
+        if (agent_version < 0) {
+            printf("Could not detect agent on device, deploying\n");
+        } else {
+            printf("Device agent version is (%ld), (%ld) is required, re-deploying\n",
+                   agent_version, kRequiredAgentVersion);
+        }
+        deploy_agent(/*check_time_stamps=*/false);
+
+        // Retry with new agent.
+        dump_out_buffer.clear();
+        dump_error_buffer.clear();
+        returnCode =
+                capture_shell_command(dump_command.c_str(), &dump_out_buffer, &dump_error_buffer);
+    }
     if (returnCode != 0) {
-        fprintf(stderr, "Executing %s returned %d\n", extractCommand.c_str(), returnCode);
-        fprintf(stderr, "%*s\n", int(extractErrorBuffer.size()), extractErrorBuffer.data());
+        if (returnCode == kInvalidAgentVersion) {
+            long agent_version = parse_agent_version(dump_out_buffer);
+            error_exit(
+                    "After update agent version remains incorrect! Expected %ld but version is %ld",
+                    kRequiredAgentVersion, agent_version);
+        }
+        if (returnCode == kPackageMissing) {
+            fprintf(stderr, "Package %s not found, falling back to install\n",
+                    package_name.c_str());
+            return {};
+        }
+        fprintf(stderr, "Executing %s returned %d\n", dump_command.c_str(), returnCode);
+        fprintf(stderr, "%*s\n", int(dump_error_buffer.size()), dump_error_buffer.data());
         error_exit("Aborting");
     }
+
+    com::android::fastdeploy::APKDump dump;
+    if (!dump.ParseFromArray(dump_out_buffer.data(), dump_out_buffer.size())) {
+        fprintf(stderr, "Can't parse output of %s\n", dump_command.c_str());
+        error_exit("Aborting");
+    }
+
+    return PatchUtils::GetDeviceAPKMetaData(dump);
 }
 
-static std::string get_patch_generator_command() {
-    if (g_use_localagent) {
-        // This should never happen on a Windows machine
-        const char* host_out = getenv("ANDROID_HOST_OUT");
-        if (host_out == nullptr) {
-            error_exit(
-                    "Could not locate deploypatchgenerator.jar because $ANDROID_HOST_OUT "
-                    "is not defined");
-        }
-        return android::base::StringPrintf("java -jar %s/framework/deploypatchgenerator.jar",
-                                           host_out);
-    }
+unique_fd install_patch(int argc, const char** argv) {
+    REPORT_FUNC_TIME();
+    constexpr char kAgentApplyServicePattern[] = "shell:/data/local/tmp/deployagent apply - -pm %s";
 
-    std::string adb_dir = android::base::GetExecutableDirectory();
-    if (adb_dir.empty()) {
-        error_exit("Could not locate deploypatchgenerator.jar");
-    }
-    return android::base::StringPrintf(R"(java -jar "%s/deploypatchgenerator.jar")",
-                                       adb_dir.c_str());
-}
-
-void create_patch(const char* apkPath, const char* metadataPath, const char* patchPath) {
-    std::string generatePatchCommand = android::base::StringPrintf(
-            R"(%s "%s" "%s" > "%s")", get_patch_generator_command().c_str(), apkPath, metadataPath,
-            patchPath);
-    int returnCode = system(generatePatchCommand.c_str());
-    if (returnCode != 0) {
-        error_exit("Executing %s returned %d", generatePatchCommand.c_str(), returnCode);
-    }
-}
-
-std::string get_patch_path(const char* apkPath) {
-    std::string packageName = get_packagename_from_apk(apkPath);
-    std::string patchDevicePath =
-            android::base::StringPrintf("%s%s.patch", kDeviceAgentPath, packageName.c_str());
-    return patchDevicePath;
-}
-
-void apply_patch_on_device(const char* apkPath, const char* patchPath, const char* outputPath) {
-    const std::string kAgentApplyCommandPattern = "/data/local/tmp/deployagent apply %s %s -o %s";
-    std::string packageName = get_packagename_from_apk(apkPath);
-    std::string patchDevicePath = get_patch_path(apkPath);
-
-    std::vector<const char*> srcs = {patchPath};
-    bool push_ok = do_sync_push(srcs, patchDevicePath.c_str(), false);
-    if (!push_ok) {
-        error_exit("Error pushing %s to %s returned", patchPath, patchDevicePath.c_str());
-    }
-
-    std::string applyPatchCommand =
-            android::base::StringPrintf(kAgentApplyCommandPattern.c_str(), packageName.c_str(),
-                                        patchDevicePath.c_str(), outputPath);
-
-    int returnCode = send_shell_command(applyPatchCommand);
-    if (returnCode != 0) {
-        error_exit("Executing %s returned %d", applyPatchCommand.c_str(), returnCode);
-    }
-}
-
-void install_patch(const char* apkPath, const char* patchPath, int argc, const char** argv) {
-    const std::string kAgentApplyCommandPattern = "/data/local/tmp/deployagent apply %s %s -pm %s";
-    std::string packageName = get_packagename_from_apk(apkPath);
-
-    std::string patchDevicePath =
-            android::base::StringPrintf("%s%s.patch", kDeviceAgentPath, packageName.c_str());
-
-    std::vector<const char*> srcs{patchPath};
-    bool push_ok = do_sync_push(srcs, patchDevicePath.c_str(), false);
-    if (!push_ok) {
-        error_exit("Error pushing %s to %s returned", patchPath, patchDevicePath.c_str());
-    }
-
-    std::vector<unsigned char> applyOutputBuffer;
-    std::vector<unsigned char> applyErrorBuffer;
+    std::vector<unsigned char> apply_output_buffer;
+    std::vector<unsigned char> apply_error_buffer;
     std::string argsString;
 
     bool rSwitchPresent = false;
@@ -326,17 +316,42 @@
         argsString.append("-r");
     }
 
-    std::string applyPatchCommand =
-            android::base::StringPrintf(kAgentApplyCommandPattern.c_str(), packageName.c_str(),
-                                        patchDevicePath.c_str(), argsString.c_str());
-    int returnCode = send_shell_command(applyPatchCommand);
-    if (returnCode != 0) {
-        error_exit("Executing %s returned %d", applyPatchCommand.c_str(), returnCode);
+    std::string error;
+    std::string apply_patch_service_string =
+            android::base::StringPrintf(kAgentApplyServicePattern, argsString.c_str());
+    unique_fd fd{adb_connect(apply_patch_service_string, &error)};
+    if (fd < 0) {
+        error_exit("Executing %s returned %s", apply_patch_service_string.c_str(), error.c_str());
+    }
+    return fd;
+}
+
+unique_fd apply_patch_on_device(const char* output_path) {
+    REPORT_FUNC_TIME();
+    constexpr char kAgentApplyServicePattern[] = "shell:/data/local/tmp/deployagent apply - -o %s";
+
+    std::string error;
+    std::string apply_patch_service_string =
+            android::base::StringPrintf(kAgentApplyServicePattern, output_path);
+    unique_fd fd{adb_connect(apply_patch_service_string, &error)};
+    if (fd < 0) {
+        error_exit("Executing %s returned %s", apply_patch_service_string.c_str(), error.c_str());
+    }
+    return fd;
+}
+
+static void create_patch(const char* apk_path, APKMetaData metadata, borrowed_fd patch_fd) {
+    REPORT_FUNC_TIME();
+    DeployPatchGenerator generator(/*is_verbose=*/false);
+    bool success = generator.CreatePatch(apk_path, std::move(metadata), patch_fd);
+    if (!success) {
+        error_exit("Failed to create patch for %s", apk_path);
     }
 }
 
-bool find_package(const char* apkPath) {
-    const std::string findCommand =
-            "/data/local/tmp/deployagent find " + get_packagename_from_apk(apkPath);
-    return !send_shell_command(findCommand);
+int stream_patch(const char* apk_path, APKMetaData metadata, unique_fd patch_fd) {
+    create_patch(apk_path, std::move(metadata), patch_fd);
+
+    REPORT_FUNC_TIME();
+    return read_and_dump(patch_fd.get());
 }
diff --git a/adb/client/fastdeploy.h b/adb/client/fastdeploy.h
index 7b7f2ec..830aeb2 100644
--- a/adb/client/fastdeploy.h
+++ b/adb/client/fastdeploy.h
@@ -16,6 +16,11 @@
 
 #pragma once
 
+#include "adb_unique_fd.h"
+
+#include "fastdeploy/proto/ApkEntry.pb.h"
+
+#include <optional>
 #include <string>
 
 enum FastDeploy_AgentUpdateStrategy {
@@ -24,12 +29,11 @@
     FastDeploy_AgentUpdateDifferentVersion
 };
 
-void fastdeploy_set_local_agent(bool use_localagent);
+void fastdeploy_set_agent_update_strategy(FastDeploy_AgentUpdateStrategy agent_update_strategy);
 int get_device_api_level();
-void update_agent(FastDeploy_AgentUpdateStrategy agentUpdateStrategy);
-void extract_metadata(const char* apkPath, FILE* outputFp);
-void create_patch(const char* apkPath, const char* metadataPath, const char* patchPath);
-void apply_patch_on_device(const char* apkPath, const char* patchPath, const char* outputPath);
-void install_patch(const char* apkPath, const char* patchPath, int argc, const char** argv);
-std::string get_patch_path(const char* apkPath);
-bool find_package(const char* apkPath);
+
+std::optional<com::android::fastdeploy::APKMetaData> extract_metadata(const char* apk_path);
+unique_fd install_patch(int argc, const char** argv);
+unique_fd apply_patch_on_device(const char* output_path);
+int stream_patch(const char* apk_path, com::android::fastdeploy::APKMetaData metadata,
+                 unique_fd patch_fd);
diff --git a/adb/client/fastdeploycallbacks.cpp b/adb/client/fastdeploycallbacks.cpp
index 23a0aca..86ceaa1 100644
--- a/adb/client/fastdeploycallbacks.cpp
+++ b/adb/client/fastdeploycallbacks.cpp
@@ -49,35 +49,7 @@
 int capture_shell_command(const char* command, std::vector<char>* outBuffer,
                           std::vector<char>* errBuffer) {
     DeployAgentBufferCallback cb(outBuffer, errBuffer);
-    return send_shell_command(command, false, &cb);
-}
-
-DeployAgentFileCallback::DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer) {
-    mpOutFile = outputFile;
-    mpErrBuffer = errBuffer;
-    mBytesWritten = 0;
-}
-
-void DeployAgentFileCallback::OnStdout(const char* buffer, int length) {
-    if (mpOutFile != NULL) {
-        int bytes_written = fwrite(buffer, 1, length, mpOutFile);
-        if (bytes_written != length) {
-            printf("Write error %d\n", bytes_written);
-        }
-        mBytesWritten += bytes_written;
-    }
-}
-
-void DeployAgentFileCallback::OnStderr(const char* buffer, int length) {
-    appendBuffer(mpErrBuffer, buffer, length);
-}
-
-int DeployAgentFileCallback::Done(int status) {
-    return status;
-}
-
-int DeployAgentFileCallback::getBytesWritten() {
-    return mBytesWritten;
+    return send_shell_command(command, /*disable_shell_protocol=*/false, &cb);
 }
 
 DeployAgentBufferCallback::DeployAgentBufferCallback(std::vector<char>* outBuffer,
diff --git a/adb/client/fastdeploycallbacks.h b/adb/client/fastdeploycallbacks.h
index 7e049c5..4a6fb99 100644
--- a/adb/client/fastdeploycallbacks.h
+++ b/adb/client/fastdeploycallbacks.h
@@ -17,23 +17,6 @@
 #pragma once
 
 #include <vector>
-#include "commandline.h"
-
-class DeployAgentFileCallback : public StandardStreamsCallbackInterface {
-  public:
-    DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer);
-
-    virtual void OnStdout(const char* buffer, int length);
-    virtual void OnStderr(const char* buffer, int length);
-    virtual int Done(int status);
-
-    int getBytesWritten();
-
-  private:
-    FILE* mpOutFile;
-    std::vector<char>* mpErrBuffer;
-    int mBytesWritten;
-};
 
 int capture_shell_command(const char* command, std::vector<char>* outBuffer,
                           std::vector<char>* errBuffer);
diff --git a/adb/client/file_sync_client.cpp b/adb/client/file_sync_client.cpp
index 9b59096..3374812 100644
--- a/adb/client/file_sync_client.cpp
+++ b/adb/client/file_sync_client.cpp
@@ -29,6 +29,7 @@
 #include <utime.h>
 
 #include <chrono>
+#include <deque>
 #include <functional>
 #include <memory>
 #include <sstream>
@@ -41,6 +42,7 @@
 #include "adb_client.h"
 #include "adb_io.h"
 #include "adb_utils.h"
+#include "brotli_utils.h"
 #include "file_sync_protocol.h"
 #include "line_printer.h"
 #include "sysdeps/errno.h"
@@ -52,6 +54,10 @@
 #include <android-base/strings.h>
 #include <android-base/stringprintf.h>
 
+using namespace std::literals;
+
+typedef void(sync_ls_cb)(unsigned mode, uint64_t size, uint64_t time, const char* name);
+
 struct syncsendbuf {
     unsigned id;
     unsigned size;
@@ -110,6 +116,11 @@
     uint64_t bytes_expected;
     bool expect_multiple_files;
 
+  private:
+    std::string last_progress_str;
+    std::chrono::steady_clock::time_point last_progress_time;
+
+  public:
     TransferLedger() {
         Reset();
     }
@@ -129,6 +140,8 @@
         files_skipped = 0;
         bytes_transferred = 0;
         bytes_expected = 0;
+        last_progress_str.clear();
+        last_progress_time = {};
     }
 
     std::string TransferRate() {
@@ -148,6 +161,12 @@
 
     void ReportProgress(LinePrinter& lp, const std::string& file, uint64_t file_copied_bytes,
                         uint64_t file_total_bytes) {
+        static constexpr auto kProgressReportInterval = 100ms;
+
+        auto now = std::chrono::steady_clock::now();
+        if (now < last_progress_time + kProgressReportInterval) {
+            return;
+        }
         char overall_percentage_str[5] = "?";
         if (bytes_expected != 0 && bytes_transferred <= bytes_expected) {
             int overall_percentage = static_cast<int>(bytes_transferred * 100 / bytes_expected);
@@ -178,21 +197,24 @@
                     android::base::StringPrintf("[%4s] %s", overall_percentage_str, file.c_str());
             }
         }
-        lp.Print(output, LinePrinter::LineType::INFO);
+        if (output != last_progress_str) {
+            lp.Print(output, LinePrinter::LineType::INFO);
+            last_progress_str = std::move(output);
+            last_progress_time = now;
+        }
     }
 
     void ReportTransferRate(LinePrinter& lp, const std::string& name, TransferDirection direction) {
         const char* direction_str = (direction == TransferDirection::push) ? "pushed" : "pulled";
         std::stringstream ss;
         if (!name.empty()) {
-            ss << name << ": ";
+            std::string_view display_name(name);
+            char* out = getenv("ANDROID_PRODUCT_OUT");
+            if (out) android::base::ConsumePrefix(&display_name, out);
+            ss << display_name << ": ";
         }
         ss << files_transferred << " file" << ((files_transferred == 1) ? "" : "s") << " "
-           << direction_str << ".";
-        if (files_skipped > 0) {
-            ss << " " << files_skipped << " file" << ((files_skipped == 1) ? "" : "s")
-               << " skipped.";
-        }
+           << direction_str << ", " << files_skipped << " skipped.";
         ss << TransferRate();
 
         lp.Print(ss.str(), LinePrinter::LineType::INFO);
@@ -202,7 +224,8 @@
 
 class SyncConnection {
   public:
-    SyncConnection() : expect_done_(false) {
+    SyncConnection() : acknowledgement_buffer_(sizeof(sync_status) + SYNC_DATA_MAX) {
+        acknowledgement_buffer_.resize(0);
         max = SYNC_DATA_MAX; // TODO: decide at runtime.
 
         std::string error;
@@ -210,6 +233,9 @@
             Error("failed to get feature set: %s", error.c_str());
         } else {
             have_stat_v2_ = CanUseFeature(features_, kFeatureStat2);
+            have_ls_v2_ = CanUseFeature(features_, kFeatureLs2);
+            have_sendrecv_v2_ = CanUseFeature(features_, kFeatureSendRecv2);
+            have_sendrecv_v2_brotli_ = CanUseFeature(features_, kFeatureSendRecv2Brotli);
             fd.reset(adb_connect("sync:", &error));
             if (fd < 0) {
                 Error("connect failed: %s", error.c_str());
@@ -233,20 +259,13 @@
         line_printer_.KeepInfoLine();
     }
 
+    bool HaveSendRecv2() const { return have_sendrecv_v2_; }
+    bool HaveSendRecv2Brotli() const { return have_sendrecv_v2_brotli_; }
+
     const FeatureSet& Features() const { return features_; }
 
     bool IsValid() { return fd >= 0; }
 
-    bool ReceivedError(const char* from, const char* to) {
-        adb_pollfd pfd = {.fd = fd.get(), .events = POLLIN};
-        int rc = adb_poll(&pfd, 1, 0);
-        if (rc < 0) {
-            Error("failed to poll: %s", strerror(errno));
-            return true;
-        }
-        return rc != 0;
-    }
-
     void NewTransfer() {
         current_ledger_.Reset();
     }
@@ -256,6 +275,11 @@
         global_ledger_.bytes_transferred += bytes;
     }
 
+    void RecordFileSent(std::string from, std::string to) {
+        RecordFilesTransferred(1);
+        deferred_acknowledgements_.emplace_back(std::move(from), std::move(to));
+    }
+
     void RecordFilesTransferred(size_t files) {
         current_ledger_.files_transferred += files;
         global_ledger_.files_transferred += files;
@@ -281,39 +305,94 @@
         }
     }
 
-    bool SendRequest(int id, const char* path_and_mode) {
-        size_t path_length = strlen(path_and_mode);
-        if (path_length > 1024) {
-            Error("SendRequest failed: path too long: %zu", path_length);
+    bool SendRequest(int id, const std::string& path) {
+        if (path.length() > 1024) {
+            Error("SendRequest failed: path too long: %zu", path.length());
             errno = ENAMETOOLONG;
             return false;
         }
 
         // Sending header and payload in a single write makes a noticeable
         // difference to "adb sync" performance.
-        std::vector<char> buf(sizeof(SyncRequest) + path_length);
+        std::vector<char> buf(sizeof(SyncRequest) + path.length());
         SyncRequest* req = reinterpret_cast<SyncRequest*>(&buf[0]);
         req->id = id;
-        req->path_length = path_length;
+        req->path_length = path.length();
         char* data = reinterpret_cast<char*>(req + 1);
-        memcpy(data, path_and_mode, path_length);
-
-        return WriteFdExactly(fd, &buf[0], buf.size());
+        memcpy(data, path.data(), path.length());
+        return WriteFdExactly(fd, buf.data(), buf.size());
     }
 
-    bool SendStat(const char* path_and_mode) {
+    bool SendSend2(std::string_view path, mode_t mode, bool compressed) {
+        if (path.length() > 1024) {
+            Error("SendRequest failed: path too long: %zu", path.length());
+            errno = ENAMETOOLONG;
+            return false;
+        }
+
+        Block buf;
+
+        SyncRequest req;
+        req.id = ID_SEND_V2;
+        req.path_length = path.length();
+
+        syncmsg msg;
+        msg.send_v2_setup.id = ID_SEND_V2;
+        msg.send_v2_setup.mode = mode;
+        msg.send_v2_setup.flags = compressed ? kSyncFlagBrotli : kSyncFlagNone;
+
+        buf.resize(sizeof(SyncRequest) + path.length() + sizeof(msg.send_v2_setup));
+
+        void* p = buf.data();
+
+        p = mempcpy(p, &req, sizeof(SyncRequest));
+        p = mempcpy(p, path.data(), path.length());
+        p = mempcpy(p, &msg.send_v2_setup, sizeof(msg.send_v2_setup));
+
+        return WriteFdExactly(fd, buf.data(), buf.size());
+    }
+
+    bool SendRecv2(const std::string& path) {
+        if (path.length() > 1024) {
+            Error("SendRequest failed: path too long: %zu", path.length());
+            errno = ENAMETOOLONG;
+            return false;
+        }
+
+        Block buf;
+
+        SyncRequest req;
+        req.id = ID_RECV_V2;
+        req.path_length = path.length();
+
+        syncmsg msg;
+        msg.recv_v2_setup.id = ID_RECV_V2;
+        msg.recv_v2_setup.flags = kSyncFlagBrotli;
+
+        buf.resize(sizeof(SyncRequest) + path.length() + sizeof(msg.recv_v2_setup));
+
+        void* p = buf.data();
+
+        p = mempcpy(p, &req, sizeof(SyncRequest));
+        p = mempcpy(p, path.data(), path.length());
+        p = mempcpy(p, &msg.recv_v2_setup, sizeof(msg.recv_v2_setup));
+
+        return WriteFdExactly(fd, buf.data(), buf.size());
+    }
+
+    bool SendStat(const std::string& path) {
         if (!have_stat_v2_) {
             errno = ENOTSUP;
             return false;
         }
-        return SendRequest(ID_STAT_V2, path_and_mode);
+        return SendRequest(ID_STAT_V2, path);
     }
 
-    bool SendLstat(const char* path_and_mode) {
+    bool SendLstat(const std::string& path) {
         if (have_stat_v2_) {
-            return SendRequest(ID_LSTAT_V2, path_and_mode);
+            return SendRequest(ID_LSTAT_V2, path);
         } else {
-            return SendRequest(ID_LSTAT_V1, path_and_mode);
+            return SendRequest(ID_LSTAT_V1, path);
         }
     }
 
@@ -353,11 +432,11 @@
             }
 
             if (msg.stat_v1.id != ID_LSTAT_V1) {
-                PLOG(FATAL) << "protocol fault: stat response has wrong message id: "
-                            << msg.stat_v1.id;
+                LOG(FATAL) << "protocol fault: stat response has wrong message id: "
+                           << msg.stat_v1.id;
             }
 
-            if (msg.stat_v1.mode == 0 && msg.stat_v1.size == 0 && msg.stat_v1.time == 0) {
+            if (msg.stat_v1.mode == 0 && msg.stat_v1.size == 0 && msg.stat_v1.mtime == 0) {
                 // There's no way for us to know what the error was.
                 errno = ENOPROTOOPT;
                 return false;
@@ -365,37 +444,85 @@
 
             st->st_mode = msg.stat_v1.mode;
             st->st_size = msg.stat_v1.size;
-            st->st_ctime = msg.stat_v1.time;
-            st->st_mtime = msg.stat_v1.time;
+            st->st_ctime = msg.stat_v1.mtime;
+            st->st_mtime = msg.stat_v1.mtime;
         }
 
         return true;
     }
 
+    bool SendLs(const std::string& path) {
+        return SendRequest(have_ls_v2_ ? ID_LIST_V2 : ID_LIST_V1, path);
+    }
+
+  private:
+    template <bool v2>
+    static bool FinishLsImpl(borrowed_fd fd, const std::function<sync_ls_cb>& callback) {
+        using dent_type =
+                std::conditional_t<v2, decltype(syncmsg::dent_v2), decltype(syncmsg::dent_v1)>;
+
+        while (true) {
+            dent_type dent;
+            if (!ReadFdExactly(fd, &dent, sizeof(dent))) return false;
+
+            uint32_t expected_id = v2 ? ID_DENT_V2 : ID_DENT_V1;
+            if (dent.id == ID_DONE) return true;
+            if (dent.id != expected_id) return false;
+
+            // Maximum length of a file name excluding null terminator (NAME_MAX) on Linux is 255.
+            char buf[256];
+            size_t len = dent.namelen;
+            if (len > 255) return false;
+
+            if (!ReadFdExactly(fd, buf, len)) return false;
+            buf[len] = 0;
+
+            // Address the unlikely scenario wherein a
+            // compromised device/service might be able to
+            // traverse across directories on the host. Let's
+            // shut that door!
+            if (strchr(buf, '/')
+#if defined(_WIN32)
+                || strchr(buf, '\\')
+#endif
+            ) {
+                return false;
+            }
+            callback(dent.mode, dent.size, dent.mtime, buf);
+        }
+    }
+
+  public:
+    bool FinishLs(const std::function<sync_ls_cb>& callback) {
+        if (have_ls_v2_) {
+            return FinishLsImpl<true>(this->fd, callback);
+        } else {
+            return FinishLsImpl<false>(this->fd, callback);
+        }
+    }
+
     // Sending header, payload, and footer in a single write makes a huge
     // difference to "adb sync" performance.
-    bool SendSmallFile(const char* path_and_mode,
-                       const char* lpath, const char* rpath,
-                       unsigned mtime,
-                       const char* data, size_t data_length) {
-        size_t path_length = strlen(path_and_mode);
-        if (path_length > 1024) {
-            Error("SendSmallFile failed: path too long: %zu", path_length);
+    bool SendSmallFile(const std::string& path, mode_t mode, const std::string& lpath,
+                       const std::string& rpath, unsigned mtime, const char* data,
+                       size_t data_length) {
+        std::string path_and_mode = android::base::StringPrintf("%s,%d", path.c_str(), mode);
+        if (path_and_mode.length() > 1024) {
+            Error("SendSmallFile failed: path too long: %zu", path_and_mode.length());
             errno = ENAMETOOLONG;
             return false;
         }
 
-        std::vector<char> buf(sizeof(SyncRequest) + path_length +
-                              sizeof(SyncRequest) + data_length +
-                              sizeof(SyncRequest));
+        std::vector<char> buf(sizeof(SyncRequest) + path_and_mode.length() + sizeof(SyncRequest) +
+                              data_length + sizeof(SyncRequest));
         char* p = &buf[0];
 
         SyncRequest* req_send = reinterpret_cast<SyncRequest*>(p);
-        req_send->id = ID_SEND;
-        req_send->path_length = path_length;
+        req_send->id = ID_SEND_V1;
+        req_send->path_length = path_and_mode.length();
         p += sizeof(SyncRequest);
-        memcpy(p, path_and_mode, path_length);
-        p += path_length;
+        memcpy(p, path_and_mode.data(), path_and_mode.size());
+        p += path_and_mode.length();
 
         SyncRequest* req_data = reinterpret_cast<SyncRequest*>(p);
         req_data->id = ID_DATA;
@@ -410,43 +537,125 @@
         p += sizeof(SyncRequest);
 
         WriteOrDie(lpath, rpath, &buf[0], (p - &buf[0]));
-        expect_done_ = true;
 
-        // RecordFilesTransferred gets called in CopyDone.
+        RecordFileSent(lpath, rpath);
         RecordBytesTransferred(data_length);
         ReportProgress(rpath, data_length, data_length);
         return true;
     }
 
-    bool SendLargeFile(const char* path_and_mode,
-                       const char* lpath, const char* rpath,
-                       unsigned mtime) {
-        if (!SendRequest(ID_SEND, path_and_mode)) {
-            Error("failed to send ID_SEND message '%s': %s", path_and_mode, strerror(errno));
+    bool SendLargeFileCompressed(const std::string& path, mode_t mode, const std::string& lpath,
+                                 const std::string& rpath, unsigned mtime) {
+        if (!SendSend2(path, mode, true)) {
+            Error("failed to send ID_SEND_V2 message '%s': %s", path.c_str(), strerror(errno));
             return false;
         }
 
         struct stat st;
-        if (stat(lpath, &st) == -1) {
-            Error("cannot stat '%s': %s", lpath, strerror(errno));
+        if (stat(lpath.c_str(), &st) == -1) {
+            Error("cannot stat '%s': %s", lpath.c_str(), strerror(errno));
             return false;
         }
 
         uint64_t total_size = st.st_size;
         uint64_t bytes_copied = 0;
 
-        unique_fd lfd(adb_open(lpath, O_RDONLY));
+        unique_fd lfd(adb_open(lpath.c_str(), O_RDONLY | O_CLOEXEC));
         if (lfd < 0) {
-            Error("opening '%s' locally failed: %s", lpath, strerror(errno));
+            Error("opening '%s' locally failed: %s", lpath.c_str(), strerror(errno));
             return false;
         }
 
         syncsendbuf sbuf;
         sbuf.id = ID_DATA;
+
+        BrotliEncoder<SYNC_DATA_MAX> encoder;
+        bool sending = true;
+        while (sending) {
+            Block input(SYNC_DATA_MAX);
+            int r = adb_read(lfd.get(), input.data(), input.size());
+            if (r < 0) {
+                Error("reading '%s' locally failed: %s", lpath.c_str(), strerror(errno));
+                return false;
+            }
+
+            if (r == 0) {
+                encoder.Finish();
+            } else {
+                input.resize(r);
+                encoder.Append(std::move(input));
+                RecordBytesTransferred(r);
+                bytes_copied += r;
+                ReportProgress(rpath, bytes_copied, total_size);
+            }
+
+            while (true) {
+                Block output;
+                BrotliEncodeResult result = encoder.Encode(&output);
+                if (result == BrotliEncodeResult::Error) {
+                    Error("compressing '%s' locally failed", lpath.c_str());
+                    return false;
+                }
+
+                if (!output.empty()) {
+                    sbuf.size = output.size();
+                    memcpy(sbuf.data, output.data(), output.size());
+                    WriteOrDie(lpath, rpath, &sbuf, sizeof(SyncRequest) + output.size());
+                }
+
+                if (result == BrotliEncodeResult::Done) {
+                    sending = false;
+                    break;
+                } else if (result == BrotliEncodeResult::NeedInput) {
+                    break;
+                } else if (result == BrotliEncodeResult::MoreOutput) {
+                    continue;
+                }
+            }
+        }
+
+        syncmsg msg;
+        msg.data.id = ID_DONE;
+        msg.data.size = mtime;
+        RecordFileSent(lpath, rpath);
+        return WriteOrDie(lpath, rpath, &msg.data, sizeof(msg.data));
+    }
+
+    bool SendLargeFile(const std::string& path, mode_t mode, const std::string& lpath,
+                       const std::string& rpath, unsigned mtime, bool compressed) {
+        if (compressed && HaveSendRecv2Brotli()) {
+            return SendLargeFileCompressed(path, mode, lpath, rpath, mtime);
+        }
+
+        std::string path_and_mode = android::base::StringPrintf("%s,%d", path.c_str(), mode);
+        if (!SendRequest(ID_SEND_V1, path_and_mode)) {
+            Error("failed to send ID_SEND_V1 message '%s': %s", path_and_mode.c_str(),
+                  strerror(errno));
+            return false;
+        }
+
+        struct stat st;
+        if (stat(lpath.c_str(), &st) == -1) {
+            Error("cannot stat '%s': %s", lpath.c_str(), strerror(errno));
+            return false;
+        }
+
+        uint64_t total_size = st.st_size;
+        uint64_t bytes_copied = 0;
+
+        unique_fd lfd(adb_open(lpath.c_str(), O_RDONLY | O_CLOEXEC));
+        if (lfd < 0) {
+            Error("opening '%s' locally failed: %s", lpath.c_str(), strerror(errno));
+            return false;
+        }
+
+        syncsendbuf sbuf;
+        sbuf.id = ID_DATA;
+
         while (true) {
-            int bytes_read = adb_read(lfd, sbuf.data, max - sizeof(SyncRequest));
+            int bytes_read = adb_read(lfd, sbuf.data, max);
             if (bytes_read == -1) {
-                Error("reading '%s' locally failed: %s", lpath, strerror(errno));
+                Error("reading '%s' locally failed: %s", lpath.c_str(), strerror(errno));
                 return false;
             } else if (bytes_read == 0) {
                 break;
@@ -457,59 +666,119 @@
 
             RecordBytesTransferred(bytes_read);
             bytes_copied += bytes_read;
-
-            // Check to see if we've received an error from the other side.
-            if (ReceivedError(lpath, rpath)) {
-                break;
-            }
-
             ReportProgress(rpath, bytes_copied, total_size);
         }
 
         syncmsg msg;
         msg.data.id = ID_DONE;
         msg.data.size = mtime;
-        expect_done_ = true;
-
-        // RecordFilesTransferred gets called in CopyDone.
+        RecordFileSent(lpath, rpath);
         return WriteOrDie(lpath, rpath, &msg.data, sizeof(msg.data));
     }
 
-    bool CopyDone(const char* from, const char* to) {
-        syncmsg msg;
-        if (!ReadFdExactly(fd, &msg.status, sizeof(msg.status))) {
-            Error("failed to copy '%s' to '%s': couldn't read from device", from, to);
-            return false;
-        }
-        if (msg.status.id == ID_OKAY) {
-            if (expect_done_) {
-                expect_done_ = false;
-                RecordFilesTransferred(1);
-                return true;
-            } else {
-                Error("failed to copy '%s' to '%s': received premature success", from, to);
-                return true;
-            }
-        }
-        if (msg.status.id != ID_FAIL) {
-            Error("failed to copy '%s' to '%s': unknown reason %d", from, to, msg.status.id);
-            return false;
-        }
-        return ReportCopyFailure(from, to, msg);
-    }
-
-    bool ReportCopyFailure(const char* from, const char* to, const syncmsg& msg) {
+    bool ReportCopyFailure(const std::string& from, const std::string& to, const syncmsg& msg) {
         std::vector<char> buf(msg.status.msglen + 1);
         if (!ReadFdExactly(fd, &buf[0], msg.status.msglen)) {
-            Error("failed to copy '%s' to '%s'; failed to read reason (!): %s",
-                  from, to, strerror(errno));
+            Error("failed to copy '%s' to '%s'; failed to read reason (!): %s", from.c_str(),
+                  to.c_str(), strerror(errno));
             return false;
         }
         buf[msg.status.msglen] = 0;
-        Error("failed to copy '%s' to '%s': remote %s", from, to, &buf[0]);
+        Error("failed to copy '%s' to '%s': remote %s", from.c_str(), to.c_str(), &buf[0]);
         return false;
     }
 
+    void CopyDone() { deferred_acknowledgements_.pop_front(); }
+
+    void ReportDeferredCopyFailure(const std::string& msg) {
+        auto& [from, to] = deferred_acknowledgements_.front();
+        Error("failed to copy '%s' to '%s': remote %s", from.c_str(), to.c_str(), msg.c_str());
+        deferred_acknowledgements_.pop_front();
+    }
+
+    bool ReadAcknowledgements(bool read_all = false) {
+        // We need to read enough such that adbd's intermediate socket's write buffer can't be
+        // full. The default buffer on Linux is 212992 bytes, but there's 576 bytes of bookkeeping
+        // overhead per write. The worst case scenario is a continuous string of failures, since
+        // each logical packet is divided into two writes. If our packet size if conservatively 512
+        // bytes long, this leaves us with space for 128 responses.
+        constexpr size_t max_deferred_acks = 128;
+        auto& buf = acknowledgement_buffer_;
+        adb_pollfd pfd = {.fd = fd.get(), .events = POLLIN};
+        while (!deferred_acknowledgements_.empty()) {
+            bool should_block = read_all || deferred_acknowledgements_.size() >= max_deferred_acks;
+
+            ssize_t rc = adb_poll(&pfd, 1, should_block ? -1 : 0);
+            if (rc == 0) {
+                CHECK(!should_block);
+                return true;
+            }
+
+            if (acknowledgement_buffer_.size() < sizeof(sync_status)) {
+                const ssize_t header_bytes_left = sizeof(sync_status) - buf.size();
+                ssize_t rc = adb_read(fd, buf.end(), header_bytes_left);
+                if (rc <= 0) {
+                    Error("failed to read copy response");
+                    return false;
+                }
+
+                buf.resize(buf.size() + rc);
+                if (rc != header_bytes_left) {
+                    // Early exit if we run out of data in the socket.
+                    return true;
+                }
+
+                if (!should_block) {
+                    // We don't want to read again yet, because the socket might be empty.
+                    continue;
+                }
+            }
+
+            auto* hdr = reinterpret_cast<sync_status*>(buf.data());
+            if (hdr->id == ID_OKAY) {
+                buf.resize(0);
+                if (hdr->msglen != 0) {
+                    Error("received ID_OKAY with msg_len (%" PRIu32 " != 0", hdr->msglen);
+                    return false;
+                }
+                CopyDone();
+                continue;
+            } else if (hdr->id != ID_FAIL) {
+                Error("unexpected response from daemon: id = %#" PRIx32, hdr->id);
+                return false;
+            } else if (hdr->msglen > SYNC_DATA_MAX) {
+                Error("too-long message length from daemon: msglen = %" PRIu32, hdr->msglen);
+                return false;
+            }
+
+            const ssize_t msg_bytes_left = hdr->msglen + sizeof(sync_status) - buf.size();
+            CHECK_GE(msg_bytes_left, 0);
+            if (msg_bytes_left > 0) {
+                ssize_t rc = adb_read(fd, buf.end(), msg_bytes_left);
+                if (rc <= 0) {
+                    Error("failed to read copy failure message");
+                    return false;
+                }
+
+                buf.resize(buf.size() + rc);
+                if (rc != msg_bytes_left) {
+                    if (should_block) {
+                        continue;
+                    } else {
+                        return true;
+                    }
+                }
+
+                std::string msg(buf.begin() + sizeof(sync_status), buf.end());
+                ReportDeferredCopyFailure(msg);
+                buf.resize(0);
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     void Printf(const char* fmt, ...) __attribute__((__format__(__printf__, 2, 3))) {
         std::string s;
 
@@ -575,9 +844,13 @@
     size_t max;
 
   private:
-    bool expect_done_;
+    std::deque<std::pair<std::string, std::string>> deferred_acknowledgements_;
+    Block acknowledgement_buffer_;
     FeatureSet features_;
     bool have_stat_v2_;
+    bool have_ls_v2_;
+    bool have_sendrecv_v2_;
+    bool have_sendrecv_v2_brotli_;
 
     TransferLedger global_ledger_;
     TransferLedger current_ledger_;
@@ -587,16 +860,19 @@
         return SendRequest(ID_QUIT, ""); // TODO: add a SendResponse?
     }
 
-    bool WriteOrDie(const char* from, const char* to, const void* data, size_t data_length) {
+    bool WriteOrDie(const std::string& from, const std::string& to, const void* data,
+                    size_t data_length) {
         if (!WriteFdExactly(fd, data, data_length)) {
             if (errno == ECONNRESET) {
                 // Assume adbd told us why it was closing the connection, and
                 // try to read failure reason from adbd.
                 syncmsg msg;
                 if (!ReadFdExactly(fd, &msg.status, sizeof(msg.status))) {
-                    Error("failed to copy '%s' to '%s': no response: %s", from, to, strerror(errno));
+                    Error("failed to copy '%s' to '%s': no response: %s", from.c_str(), to.c_str(),
+                          strerror(errno));
                 } else if (msg.status.id != ID_FAIL) {
-                    Error("failed to copy '%s' to '%s': not ID_FAIL: %d", from, to, msg.status.id);
+                    Error("failed to copy '%s' to '%s': not ID_FAIL: %d", from.c_str(), to.c_str(),
+                          msg.status.id);
                 } else {
                     ReportCopyFailure(from, to, msg);
                 }
@@ -609,51 +885,20 @@
     }
 };
 
-typedef void (sync_ls_cb)(unsigned mode, unsigned size, unsigned time, const char* name);
-
-static bool sync_ls(SyncConnection& sc, const char* path,
+static bool sync_ls(SyncConnection& sc, const std::string& path,
                     const std::function<sync_ls_cb>& func) {
-    if (!sc.SendRequest(ID_LIST, path)) return false;
-
-    while (true) {
-        syncmsg msg;
-        if (!ReadFdExactly(sc.fd, &msg.dent, sizeof(msg.dent))) return false;
-
-        if (msg.dent.id == ID_DONE) return true;
-        if (msg.dent.id != ID_DENT) return false;
-
-        size_t len = msg.dent.namelen;
-        if (len > 256) return false; // TODO: resize buffer? continue?
-
-        char buf[257];
-        if (!ReadFdExactly(sc.fd, buf, len)) return false;
-        buf[len] = 0;
-
-        // Address the unlikely scenario wherein a
-        // compromised device/service might be able to
-        // traverse across directories on the host. Let's
-        // shut that door!
-        if (strchr(buf, '/')
-#if defined(_WIN32)
-            || strchr(buf, '\\')
-#endif
-           ) {
-          return false;
-        }
-
-        func(msg.dent.mode, msg.dent.size, msg.dent.time, buf);
-    }
+    return sc.SendLs(path) && sc.FinishLs(func);
 }
 
-static bool sync_stat(SyncConnection& sc, const char* path, struct stat* st) {
+static bool sync_stat(SyncConnection& sc, const std::string& path, struct stat* st) {
     return sc.SendStat(path) && sc.FinishStat(st);
 }
 
-static bool sync_lstat(SyncConnection& sc, const char* path, struct stat* st) {
+static bool sync_lstat(SyncConnection& sc, const std::string& path, struct stat* st) {
     return sc.SendLstat(path) && sc.FinishStat(st);
 }
 
-static bool sync_stat_fallback(SyncConnection& sc, const char* path, struct stat* st) {
+static bool sync_stat_fallback(SyncConnection& sc, const std::string& path, struct stat* st) {
     if (sync_stat(sc, path, st)) {
         return true;
     }
@@ -677,7 +922,7 @@
         struct stat tmp_st;
 
         st->st_mode &= ~S_IFMT;
-        if (sync_lstat(sc, dir_path.c_str(), &tmp_st)) {
+        if (sync_lstat(sc, dir_path, &tmp_st)) {
             st->st_mode |= S_IFDIR;
         } else {
             st->st_mode |= S_IFREG;
@@ -686,10 +931,8 @@
     return true;
 }
 
-static bool sync_send(SyncConnection& sc, const char* lpath, const char* rpath, unsigned mtime,
-                      mode_t mode, bool sync) {
-    std::string path_and_mode = android::base::StringPrintf("%s,%d", rpath, mode);
-
+static bool sync_send(SyncConnection& sc, const std::string& lpath, const std::string& rpath,
+                      unsigned mtime, mode_t mode, bool sync, bool compressed) {
     if (sync) {
         struct stat st;
         if (sync_lstat(sc, rpath, &st)) {
@@ -703,46 +946,45 @@
     if (S_ISLNK(mode)) {
 #if !defined(_WIN32)
         char buf[PATH_MAX];
-        ssize_t data_length = readlink(lpath, buf, PATH_MAX - 1);
+        ssize_t data_length = readlink(lpath.c_str(), buf, PATH_MAX - 1);
         if (data_length == -1) {
-            sc.Error("readlink '%s' failed: %s", lpath, strerror(errno));
+            sc.Error("readlink '%s' failed: %s", lpath.c_str(), strerror(errno));
             return false;
         }
         buf[data_length++] = '\0';
 
-        if (!sc.SendSmallFile(path_and_mode.c_str(), lpath, rpath, mtime, buf, data_length)) {
+        if (!sc.SendSmallFile(rpath, mode, lpath, rpath, mtime, buf, data_length)) {
             return false;
         }
-        return sc.CopyDone(lpath, rpath);
+        return sc.ReadAcknowledgements();
 #endif
     }
 
     struct stat st;
-    if (stat(lpath, &st) == -1) {
-        sc.Error("failed to stat local file '%s': %s", lpath, strerror(errno));
+    if (stat(lpath.c_str(), &st) == -1) {
+        sc.Error("failed to stat local file '%s': %s", lpath.c_str(), strerror(errno));
         return false;
     }
     if (st.st_size < SYNC_DATA_MAX) {
         std::string data;
         if (!android::base::ReadFileToString(lpath, &data, true)) {
-            sc.Error("failed to read all of '%s': %s", lpath, strerror(errno));
+            sc.Error("failed to read all of '%s': %s", lpath.c_str(), strerror(errno));
             return false;
         }
-        if (!sc.SendSmallFile(path_and_mode.c_str(), lpath, rpath, mtime,
-                              data.data(), data.size())) {
+        if (!sc.SendSmallFile(rpath, mode, lpath, rpath, mtime, data.data(), data.size())) {
             return false;
         }
     } else {
-        if (!sc.SendLargeFile(path_and_mode.c_str(), lpath, rpath, mtime)) {
+        if (!sc.SendLargeFile(rpath, mode, lpath, rpath, mtime, compressed)) {
             return false;
         }
     }
-    return sc.CopyDone(lpath, rpath);
+    return sc.ReadAcknowledgements();
 }
 
-static bool sync_recv(SyncConnection& sc, const char* rpath, const char* lpath,
-                      const char* name, uint64_t expected_size) {
-    if (!sc.SendRequest(ID_RECV, rpath)) return false;
+static bool sync_recv_v1(SyncConnection& sc, const char* rpath, const char* lpath, const char* name,
+                         uint64_t expected_size) {
+    if (!sc.SendRequest(ID_RECV_V1, rpath)) return false;
 
     adb_unlink(lpath);
     unique_fd lfd(adb_creat(lpath, 0644));
@@ -795,13 +1037,120 @@
     return true;
 }
 
+static bool sync_recv_v2(SyncConnection& sc, const char* rpath, const char* lpath, const char* name,
+                         uint64_t expected_size) {
+    if (!sc.SendRecv2(rpath)) return false;
+
+    adb_unlink(lpath);
+    unique_fd lfd(adb_creat(lpath, 0644));
+    if (lfd < 0) {
+        sc.Error("cannot create '%s': %s", lpath, strerror(errno));
+        return false;
+    }
+
+    uint64_t bytes_copied = 0;
+
+    Block buffer(SYNC_DATA_MAX);
+    BrotliDecoder decoder(std::span(buffer.data(), buffer.size()));
+    bool reading = true;
+    while (reading) {
+        syncmsg msg;
+        if (!ReadFdExactly(sc.fd, &msg.data, sizeof(msg.data))) {
+            adb_unlink(lpath);
+            return false;
+        }
+
+        if (msg.data.id == ID_DONE) {
+            adb_unlink(lpath);
+            sc.Error("unexpected ID_DONE");
+            return false;
+        }
+
+        if (msg.data.id != ID_DATA) {
+            adb_unlink(lpath);
+            sc.ReportCopyFailure(rpath, lpath, msg);
+            return false;
+        }
+
+        if (msg.data.size > sc.max) {
+            sc.Error("msg.data.size too large: %u (max %zu)", msg.data.size, sc.max);
+            adb_unlink(lpath);
+            return false;
+        }
+
+        Block block(msg.data.size);
+        if (!ReadFdExactly(sc.fd, block.data(), msg.data.size)) {
+            adb_unlink(lpath);
+            return false;
+        }
+        decoder.Append(std::move(block));
+
+        while (true) {
+            std::span<char> output;
+            BrotliDecodeResult result = decoder.Decode(&output);
+
+            if (result == BrotliDecodeResult::Error) {
+                sc.Error("decompress failed");
+                adb_unlink(lpath);
+                return false;
+            }
+
+            if (!output.empty()) {
+                if (!WriteFdExactly(lfd, output.data(), output.size())) {
+                    sc.Error("cannot write '%s': %s", lpath, strerror(errno));
+                    adb_unlink(lpath);
+                    return false;
+                }
+            }
+
+            bytes_copied += output.size();
+
+            sc.RecordBytesTransferred(msg.data.size);
+            sc.ReportProgress(name != nullptr ? name : rpath, bytes_copied, expected_size);
+
+            if (result == BrotliDecodeResult::NeedInput) {
+                break;
+            } else if (result == BrotliDecodeResult::MoreOutput) {
+                continue;
+            } else if (result == BrotliDecodeResult::Done) {
+                reading = false;
+                break;
+            } else {
+                LOG(FATAL) << "invalid BrotliDecodeResult: " << static_cast<int>(result);
+            }
+        }
+    }
+
+    syncmsg msg;
+    if (!ReadFdExactly(sc.fd, &msg.data, sizeof(msg.data))) {
+        sc.Error("failed to read ID_DONE");
+        return false;
+    }
+
+    if (msg.data.id != ID_DONE) {
+        sc.Error("unexpected message after transfer: id = %d (expected ID_DONE)", msg.data.id);
+        return false;
+    }
+
+    sc.RecordFilesTransferred(1);
+    return true;
+}
+
+static bool sync_recv(SyncConnection& sc, const char* rpath, const char* lpath, const char* name,
+                      uint64_t expected_size, bool compressed) {
+    if (sc.HaveSendRecv2() && compressed) {
+        return sync_recv_v2(sc, rpath, lpath, name, expected_size);
+    } else {
+        return sync_recv_v1(sc, rpath, lpath, name, expected_size);
+    }
+}
+
 bool do_sync_ls(const char* path) {
     SyncConnection sc;
     if (!sc.IsValid()) return false;
 
-    return sync_ls(sc, path, [](unsigned mode, unsigned size, unsigned time,
-                                const char* name) {
-        printf("%08x %08x %08x %s\n", mode, size, time, name);
+    return sync_ls(sc, path, [](unsigned mode, uint64_t size, uint64_t time, const char* name) {
+        printf("%08x %08" PRIx64 " %08" PRIx64 " %s\n", mode, size, time, name);
     });
 }
 
@@ -861,9 +1210,18 @@
     return true;
 }
 
-static bool copy_local_dir_remote(SyncConnection& sc, std::string lpath,
-                                  std::string rpath, bool check_timestamps,
-                                  bool list_only) {
+// dirname("//foo") returns "//", so we can't do the obvious `path == "/"`.
+static bool is_root_dir(std::string_view path) {
+    for (char c : path) {
+        if (c != '/') {
+            return false;
+        }
+    }
+    return true;
+}
+
+static bool copy_local_dir_remote(SyncConnection& sc, std::string lpath, std::string rpath,
+                                  bool check_timestamps, bool list_only, bool compressed) {
     sc.NewTransfer();
 
     // Make sure that both directory paths end in a slash.
@@ -874,8 +1232,8 @@
     std::vector<copyinfo> file_list;
     std::vector<std::string> directory_list;
 
-    for (std::string dirpath = rpath; dirpath != "/"; dirpath = android::base::Dirname(dirpath)) {
-        directory_list.push_back(dirpath);
+    for (std::string path = rpath; !is_root_dir(path); path = android::base::Dirname(path)) {
+        directory_list.push_back(path);
     }
     std::reverse(directory_list.begin(), directory_list.end());
 
@@ -923,7 +1281,7 @@
 
     if (check_timestamps) {
         for (const copyinfo& ci : file_list) {
-            if (!sc.SendLstat(ci.rpath.c_str())) {
+            if (!sc.SendLstat(ci.rpath)) {
                 sc.Error("failed to send lstat");
                 return false;
             }
@@ -945,7 +1303,7 @@
             if (list_only) {
                 sc.Println("would push: %s -> %s", ci.lpath.c_str(), ci.rpath.c_str());
             } else {
-                if (!sync_send(sc, ci.lpath.c_str(), ci.rpath.c_str(), ci.time, ci.mode, false)) {
+                if (!sync_send(sc, ci.lpath, ci.rpath, ci.time, ci.mode, false, compressed)) {
                     return false;
                 }
             }
@@ -955,11 +1313,13 @@
     }
 
     sc.RecordFilesSkipped(skipped);
+    bool success = sc.ReadAcknowledgements(true);
     sc.ReportTransferRate(lpath, TransferDirection::push);
-    return true;
+    return success;
 }
 
-bool do_sync_push(const std::vector<const char*>& srcs, const char* dst, bool sync) {
+bool do_sync_push(const std::vector<const char*>& srcs, const char* dst, bool sync,
+                  bool compressed) {
     SyncConnection sc;
     if (!sc.IsValid()) return false;
 
@@ -1024,7 +1384,7 @@
                 dst_dir.append(android::base::Basename(src_path));
             }
 
-            success &= copy_local_dir_remote(sc, src_path, dst_dir, sync, false);
+            success &= copy_local_dir_remote(sc, src_path, dst_dir, sync, false, compressed);
             continue;
         } else if (!should_push_file(st.st_mode)) {
             sc.Warning("skipping special file '%s' (mode = 0o%o)", src_path, st.st_mode);
@@ -1045,10 +1405,11 @@
 
         sc.NewTransfer();
         sc.SetExpectedTotalBytes(st.st_size);
-        success &= sync_send(sc, src_path, dst_path, st.st_mtime, st.st_mode, sync);
+        success &= sync_send(sc, src_path, dst_path, st.st_mtime, st.st_mode, sync, compressed);
         sc.ReportTransferRate(src_path, TransferDirection::push);
     }
 
+    success &= sc.ReadAcknowledgements(true);
     sc.ReportOverallTransferRate(TransferDirection::push);
     return success;
 }
@@ -1064,7 +1425,7 @@
     file_list->push_back(ci);
 
     // Put the files/dirs in rpath on the lists.
-    auto callback = [&](unsigned mode, unsigned size, unsigned time, const char* name) {
+    auto callback = [&](unsigned mode, uint64_t size, uint64_t time, const char* name) {
         if (IsDotOrDotDot(name)) {
             return;
         }
@@ -1129,8 +1490,8 @@
     return r1 ? r1 : r2;
 }
 
-static bool copy_remote_dir_local(SyncConnection& sc, std::string rpath,
-                                  std::string lpath, bool copy_attrs) {
+static bool copy_remote_dir_local(SyncConnection& sc, std::string rpath, std::string lpath,
+                                  bool copy_attrs, bool compressed) {
     sc.NewTransfer();
 
     // Make sure that both directory paths end in a slash.
@@ -1160,7 +1521,7 @@
                 continue;
             }
 
-            if (!sync_recv(sc, ci.rpath.c_str(), ci.lpath.c_str(), nullptr, ci.size)) {
+            if (!sync_recv(sc, ci.rpath.c_str(), ci.lpath.c_str(), nullptr, ci.size, compressed)) {
                 return false;
             }
 
@@ -1177,8 +1538,8 @@
     return true;
 }
 
-bool do_sync_pull(const std::vector<const char*>& srcs, const char* dst,
-                  bool copy_attrs, const char* name) {
+bool do_sync_pull(const std::vector<const char*>& srcs, const char* dst, bool copy_attrs,
+                  bool compressed, const char* name) {
     SyncConnection sc;
     if (!sc.IsValid()) return false;
 
@@ -1252,7 +1613,7 @@
                 dst_dir.append(android::base::Basename(src_path));
             }
 
-            success &= copy_remote_dir_local(sc, src_path, dst_dir, copy_attrs);
+            success &= copy_remote_dir_local(sc, src_path, dst_dir, copy_attrs, compressed);
             continue;
         } else if (!should_pull_file(src_st.st_mode)) {
             sc.Warning("skipping special file '%s' (mode = 0o%o)", src_path, src_st.st_mode);
@@ -1271,7 +1632,7 @@
 
         sc.NewTransfer();
         sc.SetExpectedTotalBytes(src_st.st_size);
-        if (!sync_recv(sc, src_path, dst_path, name, src_st.st_size)) {
+        if (!sync_recv(sc, src_path, dst_path, name, src_st.st_size, compressed)) {
             success = false;
             continue;
         }
@@ -1287,11 +1648,12 @@
     return success;
 }
 
-bool do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only) {
+bool do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only,
+                  bool compressed) {
     SyncConnection sc;
     if (!sc.IsValid()) return false;
 
-    bool success = copy_local_dir_remote(sc, lpath, rpath, true, list_only);
+    bool success = copy_local_dir_remote(sc, lpath, rpath, true, list_only, compressed);
     if (!list_only) {
         sc.ReportOverallTransferRate(TransferDirection::push);
     }
diff --git a/adb/client/file_sync_client.h b/adb/client/file_sync_client.h
index df7f14c..de3f192 100644
--- a/adb/client/file_sync_client.h
+++ b/adb/client/file_sync_client.h
@@ -20,8 +20,10 @@
 #include <vector>
 
 bool do_sync_ls(const char* path);
-bool do_sync_push(const std::vector<const char*>& srcs, const char* dst, bool sync);
+bool do_sync_push(const std::vector<const char*>& srcs, const char* dst, bool sync,
+                  bool compressed);
 bool do_sync_pull(const std::vector<const char*>& srcs, const char* dst, bool copy_attrs,
-                  const char* name = nullptr);
+                  bool compressed, const char* name = nullptr);
 
-bool do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only);
+bool do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only,
+                  bool compressed);
diff --git a/adb/client/incremental.cpp b/adb/client/incremental.cpp
new file mode 100644
index 0000000..c8f69c3
--- /dev/null
+++ b/adb/client/incremental.cpp
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "incremental.h"
+
+#include "incremental_utils.h"
+
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
+#include <openssl/base64.h>
+
+#include "adb_client.h"
+#include "adb_utils.h"
+#include "commandline.h"
+#include "sysdeps.h"
+
+using namespace std::literals;
+
+namespace incremental {
+
+using android::base::StringPrintf;
+
+// Read, verify and return the signature bytes. Keeping fd at the position of start of verity tree.
+static std::pair<unique_fd, std::vector<char>> read_signature(Size file_size,
+                                                              std::string signature_file,
+                                                              bool silent) {
+    signature_file += IDSIG;
+
+    struct stat st;
+    if (stat(signature_file.c_str(), &st)) {
+        if (!silent) {
+            fprintf(stderr, "Failed to stat signature file %s. Abort.\n", signature_file.c_str());
+        }
+        return {};
+    }
+
+    unique_fd fd(adb_open(signature_file.c_str(), O_RDONLY));
+    if (fd < 0) {
+        if (!silent) {
+            fprintf(stderr, "Failed to open signature file: %s. Abort.\n", signature_file.c_str());
+        }
+        return {};
+    }
+
+    auto [signature, tree_size] = read_id_sig_headers(fd);
+    if (auto expected = verity_tree_size_for_file(file_size); tree_size != expected) {
+        if (!silent) {
+            fprintf(stderr,
+                    "Verity tree size mismatch in signature file: %s [was %lld, expected %lld].\n",
+                    signature_file.c_str(), (long long)tree_size, (long long)expected);
+        }
+        return {};
+    }
+
+    return {std::move(fd), std::move(signature)};
+}
+
+// Base64-encode signature bytes. Keeping fd at the position of start of verity tree.
+static std::pair<unique_fd, std::string> read_and_encode_signature(Size file_size,
+                                                                   std::string signature_file,
+                                                                   bool silent) {
+    auto [fd, signature] = read_signature(file_size, std::move(signature_file), silent);
+    if (!fd.ok()) {
+        return {};
+    }
+
+    size_t base64_len = 0;
+    if (!EVP_EncodedLength(&base64_len, signature.size())) {
+        if (!silent) {
+            fprintf(stderr, "Fail to estimate base64 encoded length. Abort.\n");
+        }
+        return {};
+    }
+    std::string encoded_signature(base64_len, '\0');
+    encoded_signature.resize(EVP_EncodeBlock((uint8_t*)encoded_signature.data(),
+                                             (const uint8_t*)signature.data(), signature.size()));
+
+    return {std::move(fd), std::move(encoded_signature)};
+}
+
+// Send install-incremental to the device along with properly configured file descriptors in
+// streaming format. Once connection established, send all fs-verity tree bytes.
+static unique_fd start_install(const Files& files, const Args& passthrough_args, bool silent) {
+    std::vector<std::string> command_args{"package", "install-incremental"};
+    command_args.insert(command_args.end(), passthrough_args.begin(), passthrough_args.end());
+
+    for (int i = 0, size = files.size(); i < size; ++i) {
+        const auto& file = files[i];
+
+        struct stat st;
+        if (stat(file.c_str(), &st)) {
+            if (!silent) {
+                fprintf(stderr, "Failed to stat input file %s. Abort.\n", file.c_str());
+            }
+            return {};
+        }
+
+        auto [signature_fd, signature] = read_and_encode_signature(st.st_size, file, silent);
+        if (!signature_fd.ok()) {
+            return {};
+        }
+
+        auto file_desc = StringPrintf("%s:%lld:%d:%s:1", android::base::Basename(file).c_str(),
+                                      (long long)st.st_size, i, signature.c_str());
+        command_args.push_back(std::move(file_desc));
+    }
+
+    std::string error;
+    auto connection_fd = unique_fd(send_abb_exec_command(command_args, &error));
+    if (connection_fd < 0) {
+        if (!silent) {
+            fprintf(stderr, "Failed to run: %s, error: %s\n",
+                    android::base::Join(command_args, " ").c_str(), error.c_str());
+        }
+        return {};
+    }
+
+    return connection_fd;
+}
+
+bool can_install(const Files& files) {
+    for (const auto& file : files) {
+        struct stat st;
+        if (stat(file.c_str(), &st)) {
+            return false;
+        }
+
+        auto [fd, _] = read_signature(st.st_size, file, true);
+        if (!fd.ok()) {
+            return false;
+        }
+    }
+    return true;
+}
+
+std::optional<Process> install(const Files& files, const Args& passthrough_args, bool silent) {
+    auto connection_fd = start_install(files, passthrough_args, silent);
+    if (connection_fd < 0) {
+        if (!silent) {
+            fprintf(stderr, "adb: failed to initiate installation on device.\n");
+        }
+        return {};
+    }
+
+    std::string adb_path = android::base::GetExecutablePath();
+
+    auto osh = adb_get_os_handle(connection_fd.get());
+#ifdef _WIN32
+    auto fd_param = std::to_string(reinterpret_cast<intptr_t>(osh));
+#else /* !_WIN32 a.k.a. Unix */
+    auto fd_param = std::to_string(osh);
+#endif
+
+    // pipe for child process to write output
+    int print_fds[2];
+    if (adb_socketpair(print_fds) != 0) {
+        if (!silent) {
+            fprintf(stderr, "Failed to create socket pair for child to print to parent\n");
+        }
+        return {};
+    }
+    auto [pipe_read_fd, pipe_write_fd] = print_fds;
+    auto pipe_write_fd_param = std::to_string(intptr_t(adb_get_os_handle(pipe_write_fd)));
+    close_on_exec(pipe_read_fd);
+
+    std::vector<std::string> args(std::move(files));
+    args.insert(args.begin(), {"inc-server", fd_param, pipe_write_fd_param});
+    auto child =
+            adb_launch_process(adb_path, std::move(args), {connection_fd.get(), pipe_write_fd});
+    if (!child) {
+        if (!silent) {
+            fprintf(stderr, "adb: failed to fork: %s\n", strerror(errno));
+        }
+        return {};
+    }
+
+    adb_close(pipe_write_fd);
+
+    auto killOnExit = [](Process* p) { p->kill(); };
+    std::unique_ptr<Process, decltype(killOnExit)> serverKiller(&child, killOnExit);
+
+    Result result = wait_for_installation(pipe_read_fd);
+    adb_close(pipe_read_fd);
+
+    if (result == Result::Success) {
+        // adb client exits now but inc-server can continue
+        serverKiller.release();
+    }
+    return child;
+}
+
+Result wait_for_installation(int read_fd) {
+    static constexpr int maxMessageSize = 256;
+    std::vector<char> child_stdout(CHUNK_SIZE);
+    int bytes_read;
+    int buf_size = 0;
+    // TODO(b/150865433): optimize child's output parsing
+    while ((bytes_read = adb_read(read_fd, child_stdout.data() + buf_size,
+                                  child_stdout.size() - buf_size)) > 0) {
+        // print to parent's stdout
+        fprintf(stdout, "%.*s", bytes_read, child_stdout.data() + buf_size);
+
+        buf_size += bytes_read;
+        const std::string_view stdout_str(child_stdout.data(), buf_size);
+        // wait till installation either succeeds or fails
+        if (stdout_str.find("Success") != std::string::npos) {
+            return Result::Success;
+        }
+        // on failure, wait for full message
+        static constexpr auto failure_msg_head = "Failure ["sv;
+        if (const auto begin_itr = stdout_str.find(failure_msg_head);
+            begin_itr != std::string::npos) {
+            if (buf_size >= maxMessageSize) {
+                return Result::Failure;
+            }
+            const auto end_itr = stdout_str.rfind("]");
+            if (end_itr != std::string::npos && end_itr >= begin_itr + failure_msg_head.size()) {
+                return Result::Failure;
+            }
+        }
+        child_stdout.resize(buf_size + CHUNK_SIZE);
+    }
+    return Result::None;
+}
+
+}  // namespace incremental
diff --git a/adb/client/incremental.h b/adb/client/incremental.h
new file mode 100644
index 0000000..40e928a
--- /dev/null
+++ b/adb/client/incremental.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "adb_unique_fd.h"
+
+#include <optional>
+#include <string>
+
+#include "sysdeps.h"
+
+namespace incremental {
+
+using Files = std::vector<std::string>;
+using Args = std::vector<std::string_view>;
+
+bool can_install(const Files& files);
+std::optional<Process> install(const Files& files, const Args& passthrough_args, bool silent);
+
+enum class Result { Success, Failure, None };
+Result wait_for_installation(int read_fd);
+
+}  // namespace incremental
diff --git a/adb/client/incremental_server.cpp b/adb/client/incremental_server.cpp
new file mode 100644
index 0000000..bfe18c0
--- /dev/null
+++ b/adb/client/incremental_server.cpp
@@ -0,0 +1,716 @@
+﻿/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define TRACE_TAG INCREMENTAL
+
+#include "incremental_server.h"
+
+#include <android-base/endian.h>
+#include <android-base/strings.h>
+#include <inttypes.h>
+#include <lz4.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <array>
+#include <deque>
+#include <fstream>
+#include <thread>
+#include <type_traits>
+#include <unordered_set>
+
+#include "adb.h"
+#include "adb_io.h"
+#include "adb_trace.h"
+#include "adb_unique_fd.h"
+#include "adb_utils.h"
+#include "incremental_utils.h"
+#include "sysdeps.h"
+
+namespace incremental {
+
+static constexpr int kHashesPerBlock = kBlockSize / kDigestSize;
+static constexpr int kCompressedSizeMax = kBlockSize * 0.95;
+static constexpr int8_t kTypeData = 0;
+static constexpr int8_t kTypeHash = 1;
+static constexpr int8_t kCompressionNone = 0;
+static constexpr int8_t kCompressionLZ4 = 1;
+static constexpr int kCompressBound = std::max(kBlockSize, LZ4_COMPRESSBOUND(kBlockSize));
+static constexpr auto kReadBufferSize = 128 * 1024;
+static constexpr int kPollTimeoutMillis = 300000;  // 5 minutes
+
+using BlockSize = int16_t;
+using FileId = int16_t;
+using BlockIdx = int32_t;
+using NumBlocks = int32_t;
+using BlockType = int8_t;
+using CompressionType = int8_t;
+using RequestType = int16_t;
+using ChunkHeader = int32_t;
+using MagicType = uint32_t;
+
+static constexpr MagicType INCR = 0x494e4352;  // LE INCR
+
+static constexpr RequestType SERVING_COMPLETE = 0;
+static constexpr RequestType BLOCK_MISSING = 1;
+static constexpr RequestType PREFETCH = 2;
+static constexpr RequestType DESTROY = 3;
+
+static constexpr inline int64_t roundDownToBlockOffset(int64_t val) {
+    return val & ~(kBlockSize - 1);
+}
+
+static constexpr inline int64_t roundUpToBlockOffset(int64_t val) {
+    return roundDownToBlockOffset(val + kBlockSize - 1);
+}
+
+static constexpr inline NumBlocks numBytesToNumBlocks(int64_t bytes) {
+    return roundUpToBlockOffset(bytes) / kBlockSize;
+}
+
+static constexpr inline off64_t blockIndexToOffset(BlockIdx blockIdx) {
+    return static_cast<off64_t>(blockIdx) * kBlockSize;
+}
+
+template <typename T>
+static inline constexpr T toBigEndian(T t) {
+    using unsigned_type = std::make_unsigned_t<T>;
+    if constexpr (std::is_same_v<T, int16_t>) {
+        return htobe16(static_cast<unsigned_type>(t));
+    } else if constexpr (std::is_same_v<T, int32_t>) {
+        return htobe32(static_cast<unsigned_type>(t));
+    } else if constexpr (std::is_same_v<T, int64_t>) {
+        return htobe64(static_cast<unsigned_type>(t));
+    } else {
+        return t;
+    }
+}
+
+template <typename T>
+static inline constexpr T readBigEndian(void* data) {
+    using unsigned_type = std::make_unsigned_t<T>;
+    if constexpr (std::is_same_v<T, int16_t>) {
+        return static_cast<T>(be16toh(*reinterpret_cast<unsigned_type*>(data)));
+    } else if constexpr (std::is_same_v<T, int32_t>) {
+        return static_cast<T>(be32toh(*reinterpret_cast<unsigned_type*>(data)));
+    } else if constexpr (std::is_same_v<T, int64_t>) {
+        return static_cast<T>(be64toh(*reinterpret_cast<unsigned_type*>(data)));
+    } else {
+        return T();
+    }
+}
+
+// Received from device
+// !Does not include magic!
+struct RequestCommand {
+    RequestType request_type;  // 2 bytes
+    FileId file_id;            // 2 bytes
+    union {
+        BlockIdx block_idx;
+        NumBlocks num_blocks;
+    };  // 4 bytes
+} __attribute__((packed));
+
+// Placed before actual data bytes of each block
+struct ResponseHeader {
+    FileId file_id;                    // 2 bytes
+    BlockType block_type;              // 1 byte
+    CompressionType compression_type;  // 1 byte
+    BlockIdx block_idx;                // 4 bytes
+    BlockSize block_size;              // 2 bytes
+
+    static constexpr size_t responseSizeFor(size_t dataSize) {
+        return dataSize + sizeof(ResponseHeader);
+    }
+} __attribute__((packed));
+
+template <size_t Size = kBlockSize>
+struct BlockBuffer {
+    ResponseHeader header;
+    char data[Size];
+} __attribute__((packed));
+
+// Holds streaming state for a file
+class File {
+  public:
+    // Plain file
+    File(const char* filepath, FileId id, int64_t size, unique_fd fd, int64_t tree_offset,
+         unique_fd tree_fd)
+        : File(filepath, id, size, tree_offset) {
+        this->fd_ = std::move(fd);
+        this->tree_fd_ = std::move(tree_fd);
+        priority_blocks_ = PriorityBlocksForFile(filepath, fd_.get(), size);
+    }
+    int64_t ReadDataBlock(BlockIdx block_idx, void* buf, bool* is_zip_compressed) const {
+        int64_t bytes_read = -1;
+        const off64_t offsetStart = blockIndexToOffset(block_idx);
+        bytes_read = adb_pread(fd_, buf, kBlockSize, offsetStart);
+        return bytes_read;
+    }
+    int64_t ReadTreeBlock(BlockIdx block_idx, void* buf) const {
+        int64_t bytes_read = -1;
+        const off64_t offsetStart = tree_offset_ + blockIndexToOffset(block_idx);
+        bytes_read = adb_pread(tree_fd_, buf, kBlockSize, offsetStart);
+        return bytes_read;
+    }
+
+    const std::vector<BlockIdx>& PriorityBlocks() const { return priority_blocks_; }
+
+    std::vector<bool> sentBlocks;
+    NumBlocks sentBlocksCount = 0;
+
+    std::vector<bool> sentTreeBlocks;
+
+    const char* const filepath;
+    const FileId id;
+    const int64_t size;
+
+  private:
+    File(const char* filepath, FileId id, int64_t size, int64_t tree_offset)
+        : filepath(filepath), id(id), size(size), tree_offset_(tree_offset) {
+        sentBlocks.resize(numBytesToNumBlocks(size));
+        sentTreeBlocks.resize(verity_tree_blocks_for_file(size));
+    }
+    unique_fd fd_;
+    std::vector<BlockIdx> priority_blocks_;
+
+    unique_fd tree_fd_;
+    const int64_t tree_offset_;
+};
+
+class IncrementalServer {
+  public:
+    IncrementalServer(unique_fd adb_fd, unique_fd output_fd, std::vector<File> files)
+        : adb_fd_(std::move(adb_fd)), output_fd_(std::move(output_fd)), files_(std::move(files)) {
+        buffer_.reserve(kReadBufferSize);
+        pendingBlocksBuffer_.resize(kChunkFlushSize + 2 * kBlockSize);
+        pendingBlocks_ = pendingBlocksBuffer_.data() + sizeof(ChunkHeader);
+    }
+
+    bool Serve();
+
+  private:
+    struct PrefetchState {
+        const File* file;
+        BlockIdx overallIndex = 0;
+        BlockIdx overallEnd = 0;
+        BlockIdx priorityIndex = 0;
+
+        explicit PrefetchState(const File& f, BlockIdx start, int count)
+            : file(&f),
+              overallIndex(start),
+              overallEnd(std::min<BlockIdx>(start + count, f.sentBlocks.size())) {}
+
+        explicit PrefetchState(const File& f)
+            : PrefetchState(f, 0, (BlockIdx)f.sentBlocks.size()) {}
+
+        bool done() const {
+            const bool overallSent = (overallIndex >= overallEnd);
+            if (file->PriorityBlocks().empty()) {
+                return overallSent;
+            }
+            return overallSent && (priorityIndex >= (BlockIdx)file->PriorityBlocks().size());
+        }
+    };
+
+    bool SkipToRequest(void* buffer, size_t* size, bool blocking);
+    std::optional<RequestCommand> ReadRequest(bool blocking);
+
+    void erase_buffer_head(int count) { buffer_.erase(buffer_.begin(), buffer_.begin() + count); }
+
+    enum class SendResult { Sent, Skipped, Error };
+    SendResult SendDataBlock(FileId fileId, BlockIdx blockIdx, bool flush = false);
+
+    bool SendTreeBlock(FileId fileId, int32_t fileBlockIdx, BlockIdx blockIdx);
+    bool SendTreeBlocksForDataBlock(FileId fileId, BlockIdx blockIdx);
+
+    bool SendDone();
+    void RunPrefetching();
+
+    void Send(const void* data, size_t size, bool flush);
+    void Flush();
+    using TimePoint = decltype(std::chrono::high_resolution_clock::now());
+    bool ServingComplete(std::optional<TimePoint> startTime, int missesCount, int missesSent);
+
+    unique_fd const adb_fd_;
+    unique_fd const output_fd_;
+    std::vector<File> files_;
+
+    // Incoming data buffer.
+    std::vector<char> buffer_;
+
+    std::deque<PrefetchState> prefetches_;
+    int compressed_ = 0, uncompressed_ = 0;
+    long long sentSize_ = 0;
+
+    static constexpr auto kChunkFlushSize = 31 * kBlockSize;
+
+    std::vector<char> pendingBlocksBuffer_;
+    char* pendingBlocks_ = nullptr;
+
+    // True when client notifies that all the data has been received
+    bool servingComplete_ = false;
+};
+
+bool IncrementalServer::SkipToRequest(void* buffer, size_t* size, bool blocking) {
+    while (true) {
+        // Looking for INCR magic.
+        bool magic_found = false;
+        int bcur = 0;
+        int bsize = buffer_.size();
+        for (bcur = 0; bcur + 4 < bsize; ++bcur) {
+            uint32_t magic = be32toh(*(uint32_t*)(buffer_.data() + bcur));
+            if (magic == INCR) {
+                magic_found = true;
+                break;
+            }
+        }
+
+        if (bcur > 0) {
+            // output the rest.
+            (void)WriteFdExactly(output_fd_, buffer_.data(), bcur);
+            erase_buffer_head(bcur);
+        }
+
+        if (magic_found && buffer_.size() >= *size + sizeof(INCR)) {
+            // fine, return
+            memcpy(buffer, buffer_.data() + sizeof(INCR), *size);
+            erase_buffer_head(*size + sizeof(INCR));
+            return true;
+        }
+
+        adb_pollfd pfd = {adb_fd_.get(), POLLIN, 0};
+        auto res = adb_poll(&pfd, 1, blocking ? kPollTimeoutMillis : 0);
+
+        if (res != 1) {
+            auto err = errno;
+            (void)WriteFdExactly(output_fd_, buffer_.data(), buffer_.size());
+            if (res < 0) {
+                D("Failed to poll: %s", strerror(err));
+                return false;
+            }
+            if (blocking) {
+                fprintf(stderr, "Timed out waiting for data from device.\n");
+            }
+            if (blocking && servingComplete_) {
+                // timeout waiting from client. Serving is complete, so quit.
+                return false;
+            }
+            *size = 0;
+            return true;
+        }
+
+        bsize = buffer_.size();
+        buffer_.resize(kReadBufferSize);
+        int r = adb_read(adb_fd_, buffer_.data() + bsize, kReadBufferSize - bsize);
+        if (r > 0) {
+            buffer_.resize(bsize + r);
+            continue;
+        }
+
+        D("Failed to read from fd %d: %d. Exit", adb_fd_.get(), errno);
+        break;
+    }
+    // socket is closed. print remaining messages
+    WriteFdExactly(output_fd_, buffer_.data(), buffer_.size());
+    return false;
+}
+
+std::optional<RequestCommand> IncrementalServer::ReadRequest(bool blocking) {
+    uint8_t commandBuf[sizeof(RequestCommand)];
+    auto size = sizeof(commandBuf);
+    if (!SkipToRequest(&commandBuf, &size, blocking)) {
+        return {{DESTROY}};
+    }
+    if (size < sizeof(RequestCommand)) {
+        return {};
+    }
+    RequestCommand request;
+    request.request_type = readBigEndian<RequestType>(&commandBuf[0]);
+    request.file_id = readBigEndian<FileId>(&commandBuf[2]);
+    request.block_idx = readBigEndian<BlockIdx>(&commandBuf[4]);
+    return request;
+}
+
+bool IncrementalServer::SendTreeBlocksForDataBlock(const FileId fileId, const BlockIdx blockIdx) {
+    auto& file = files_[fileId];
+    const int32_t data_block_count = numBytesToNumBlocks(file.size);
+
+    const int32_t total_nodes_count(file.sentTreeBlocks.size());
+    const int32_t leaf_nodes_count = (data_block_count + kHashesPerBlock - 1) / kHashesPerBlock;
+
+    const int32_t leaf_nodes_offset = total_nodes_count - leaf_nodes_count;
+
+    // Leaf level, sending only 1 block.
+    const int32_t leaf_idx = leaf_nodes_offset + blockIdx / kHashesPerBlock;
+    if (file.sentTreeBlocks[leaf_idx]) {
+        return true;
+    }
+    if (!SendTreeBlock(fileId, blockIdx, leaf_idx)) {
+        return false;
+    }
+    file.sentTreeBlocks[leaf_idx] = true;
+
+    // Non-leaf, sending EVERYTHING. This should be done only once.
+    if (leaf_nodes_offset == 0 || file.sentTreeBlocks[0]) {
+        return true;
+    }
+
+    for (int32_t i = 0; i < leaf_nodes_offset; ++i) {
+        if (!SendTreeBlock(fileId, blockIdx, i)) {
+            return false;
+        }
+        file.sentTreeBlocks[i] = true;
+    }
+    return true;
+}
+
+bool IncrementalServer::SendTreeBlock(FileId fileId, int32_t fileBlockIdx, BlockIdx blockIdx) {
+    const auto& file = files_[fileId];
+
+    BlockBuffer buffer;
+    const int64_t bytesRead = file.ReadTreeBlock(blockIdx, buffer.data);
+    if (bytesRead <= 0) {
+        fprintf(stderr, "Failed to get data for %s.idsig at blockIdx=%d.\n", file.filepath,
+                blockIdx);
+        return false;
+    }
+
+    buffer.header.compression_type = kCompressionNone;
+    buffer.header.block_type = kTypeHash;
+    buffer.header.file_id = toBigEndian(fileId);
+    buffer.header.block_size = toBigEndian(int16_t(bytesRead));
+    buffer.header.block_idx = toBigEndian(blockIdx);
+
+    Send(&buffer, ResponseHeader::responseSizeFor(bytesRead), /*flush=*/false);
+
+    return true;
+}
+
+auto IncrementalServer::SendDataBlock(FileId fileId, BlockIdx blockIdx, bool flush) -> SendResult {
+    auto& file = files_[fileId];
+    if (blockIdx >= static_cast<long>(file.sentBlocks.size())) {
+        // may happen as we schedule some extra blocks for reported page misses
+        D("Skipped reading file %s at block %" PRId32 " (past end).", file.filepath, blockIdx);
+        return SendResult::Skipped;
+    }
+    if (file.sentBlocks[blockIdx]) {
+        return SendResult::Skipped;
+    }
+
+    if (!SendTreeBlocksForDataBlock(fileId, blockIdx)) {
+        return SendResult::Error;
+    }
+
+    BlockBuffer raw;
+    bool isZipCompressed = false;
+    const int64_t bytesRead = file.ReadDataBlock(blockIdx, raw.data, &isZipCompressed);
+    if (bytesRead < 0) {
+        fprintf(stderr, "Failed to get data for %s at blockIdx=%d (%d).\n", file.filepath, blockIdx,
+                errno);
+        return SendResult::Error;
+    }
+
+    BlockBuffer<kCompressBound> compressed;
+    int16_t compressedSize = 0;
+    if (!isZipCompressed) {
+        compressedSize = LZ4_compress_default(raw.data, compressed.data, bytesRead, kCompressBound);
+    }
+    int16_t blockSize;
+    ResponseHeader* header;
+    if (compressedSize > 0 && compressedSize < kCompressedSizeMax) {
+        ++compressed_;
+        blockSize = compressedSize;
+        header = &compressed.header;
+        header->compression_type = kCompressionLZ4;
+    } else {
+        ++uncompressed_;
+        blockSize = bytesRead;
+        header = &raw.header;
+        header->compression_type = kCompressionNone;
+    }
+
+    header->block_type = kTypeData;
+    header->file_id = toBigEndian(fileId);
+    header->block_size = toBigEndian(blockSize);
+    header->block_idx = toBigEndian(blockIdx);
+
+    file.sentBlocks[blockIdx] = true;
+    file.sentBlocksCount += 1;
+    Send(header, ResponseHeader::responseSizeFor(blockSize), flush);
+
+    return SendResult::Sent;
+}
+
+bool IncrementalServer::SendDone() {
+    ResponseHeader header;
+    header.file_id = -1;
+    header.block_type = 0;
+    header.compression_type = 0;
+    header.block_idx = 0;
+    header.block_size = 0;
+    Send(&header, sizeof(header), true);
+    return true;
+}
+
+void IncrementalServer::RunPrefetching() {
+    constexpr auto kPrefetchBlocksPerIteration = 128;
+
+    int blocksToSend = kPrefetchBlocksPerIteration;
+    while (!prefetches_.empty() && blocksToSend > 0) {
+        auto& prefetch = prefetches_.front();
+        const auto& file = *prefetch.file;
+        const auto& priority_blocks = file.PriorityBlocks();
+        if (!priority_blocks.empty()) {
+            for (auto& i = prefetch.priorityIndex;
+                 blocksToSend > 0 && i < (BlockIdx)priority_blocks.size(); ++i) {
+                if (auto res = SendDataBlock(file.id, priority_blocks[i]);
+                    res == SendResult::Sent) {
+                    --blocksToSend;
+                } else if (res == SendResult::Error) {
+                    fprintf(stderr, "Failed to send priority block %" PRId32 "\n", i);
+                }
+            }
+        }
+        for (auto& i = prefetch.overallIndex; blocksToSend > 0 && i < prefetch.overallEnd; ++i) {
+            if (auto res = SendDataBlock(file.id, i); res == SendResult::Sent) {
+                --blocksToSend;
+            } else if (res == SendResult::Error) {
+                fprintf(stderr, "Failed to send block %" PRId32 "\n", i);
+            }
+        }
+        if (prefetch.done()) {
+            prefetches_.pop_front();
+        }
+    }
+}
+
+void IncrementalServer::Send(const void* data, size_t size, bool flush) {
+    pendingBlocks_ = std::copy_n(static_cast<const char*>(data), size, pendingBlocks_);
+    if (flush || pendingBlocks_ - pendingBlocksBuffer_.data() > kChunkFlushSize) {
+        Flush();
+    }
+}
+
+void IncrementalServer::Flush() {
+    auto dataBytes = pendingBlocks_ - (pendingBlocksBuffer_.data() + sizeof(ChunkHeader));
+    if (dataBytes == 0) {
+        return;
+    }
+
+    *(ChunkHeader*)pendingBlocksBuffer_.data() = toBigEndian<int32_t>(dataBytes);
+    auto totalBytes = sizeof(ChunkHeader) + dataBytes;
+    if (!WriteFdExactly(adb_fd_, pendingBlocksBuffer_.data(), totalBytes)) {
+        fprintf(stderr, "Failed to write %d bytes\n", int(totalBytes));
+    }
+    sentSize_ += totalBytes;
+    pendingBlocks_ = pendingBlocksBuffer_.data() + sizeof(ChunkHeader);
+}
+
+bool IncrementalServer::ServingComplete(std::optional<TimePoint> startTime, int missesCount,
+                                        int missesSent) {
+    servingComplete_ = true;
+    using namespace std::chrono;
+    auto endTime = high_resolution_clock::now();
+    D("Streaming completed.\n"
+      "Misses: %d, of those unique: %d; sent compressed: %d, uncompressed: "
+      "%d, mb: %.3f\n"
+      "Total time taken: %.3fms",
+      missesCount, missesSent, compressed_, uncompressed_, sentSize_ / 1024.0 / 1024.0,
+      duration_cast<microseconds>(endTime - (startTime ? *startTime : endTime)).count() / 1000.0);
+    return true;
+}
+
+bool IncrementalServer::Serve() {
+    // Initial handshake to verify connection is still alive
+    if (!SendOkay(adb_fd_)) {
+        fprintf(stderr, "Connection is dead. Abort.\n");
+        return false;
+    }
+
+    std::unordered_set<FileId> prefetchedFiles;
+    bool doneSent = false;
+    int missesCount = 0;
+    int missesSent = 0;
+
+    using namespace std::chrono;
+    std::optional<TimePoint> startTime;
+
+    while (true) {
+        if (!doneSent && prefetches_.empty() &&
+            std::all_of(files_.begin(), files_.end(), [](const File& f) {
+                return f.sentBlocksCount == NumBlocks(f.sentBlocks.size());
+            })) {
+            fprintf(stderr, "All files should be loaded. Notifying the device.\n");
+            SendDone();
+            doneSent = true;
+        }
+
+        const bool blocking = prefetches_.empty();
+        if (blocking) {
+            // We've no idea how long the blocking call is, so let's flush whatever is still unsent.
+            Flush();
+        }
+        auto request = ReadRequest(blocking);
+
+        if (!startTime) {
+            startTime = high_resolution_clock::now();
+        }
+
+        if (request) {
+            FileId fileId = request->file_id;
+            BlockIdx blockIdx = request->block_idx;
+
+            switch (request->request_type) {
+                case DESTROY: {
+                    // Stop everything.
+                    return true;
+                }
+                case SERVING_COMPLETE: {
+                    // Not stopping the server here.
+                    ServingComplete(startTime, missesCount, missesSent);
+                    break;
+                }
+                case BLOCK_MISSING: {
+                    ++missesCount;
+                    // Sends one single block ASAP.
+                    if (fileId < 0 || fileId >= (FileId)files_.size() || blockIdx < 0 ||
+                        blockIdx >= (BlockIdx)files_[fileId].sentBlocks.size()) {
+                        fprintf(stderr,
+                                "Received invalid data request for file_id %" PRId16
+                                " block_idx %" PRId32 ".\n",
+                                fileId, blockIdx);
+                        break;
+                    }
+
+                    if (VLOG_IS_ON(INCREMENTAL)) {
+                        auto& file = files_[fileId];
+                        auto posP = std::find(file.PriorityBlocks().begin(),
+                                              file.PriorityBlocks().end(), blockIdx);
+                        D("\tMISSING BLOCK: reading file %d block %04d (in priority: %d of %d)",
+                          (int)fileId, (int)blockIdx,
+                          posP == file.PriorityBlocks().end()
+                                  ? -1
+                                  : int(posP - file.PriorityBlocks().begin()),
+                          int(file.PriorityBlocks().size()));
+                    }
+
+                    if (auto res = SendDataBlock(fileId, blockIdx, true);
+                        res == SendResult::Error) {
+                        fprintf(stderr, "Failed to send block %" PRId32 ".\n", blockIdx);
+                    } else if (res == SendResult::Sent) {
+                        ++missesSent;
+                        // Make sure we send more pages from this place onward, in case if the OS is
+                        // reading a bigger block.
+                        prefetches_.emplace_front(files_[fileId], blockIdx + 1, 7);
+                    }
+                    break;
+                }
+                case PREFETCH: {
+                    // Start prefetching for a file
+                    if (fileId < 0) {
+                        fprintf(stderr,
+                                "Received invalid prefetch request for file_id %" PRId16 "\n",
+                                fileId);
+                        break;
+                    }
+                    if (!prefetchedFiles.insert(fileId).second) {
+                        fprintf(stderr,
+                                "Received duplicate prefetch request for file_id %" PRId16 "\n",
+                                fileId);
+                        break;
+                    }
+                    D("Received prefetch request for file_id %" PRId16 ".", fileId);
+                    prefetches_.emplace_back(files_[fileId]);
+                    break;
+                }
+                default:
+                    fprintf(stderr, "Invalid request %" PRId16 ",%" PRId16 ",%" PRId32 ".\n",
+                            request->request_type, fileId, blockIdx);
+                    break;
+            }
+        }
+
+        RunPrefetching();
+    }
+}
+
+static std::pair<unique_fd, int64_t> open_fd(const char* filepath) {
+    struct stat st;
+    if (stat(filepath, &st)) {
+        error_exit("inc-server: failed to stat input file '%s'.", filepath);
+    }
+
+    unique_fd fd(adb_open(filepath, O_RDONLY));
+    if (fd < 0) {
+        error_exit("inc-server: failed to open file '%s'.", filepath);
+    }
+
+    return {std::move(fd), st.st_size};
+}
+
+static std::pair<unique_fd, int64_t> open_signature(int64_t file_size, const char* filepath) {
+    std::string signature_file(filepath);
+    signature_file += IDSIG;
+
+    unique_fd fd(adb_open(signature_file.c_str(), O_RDONLY));
+    if (fd < 0) {
+        error_exit("inc-server: failed to open file '%s'.", signature_file.c_str());
+    }
+
+    auto [tree_offset, tree_size] = skip_id_sig_headers(fd);
+    if (auto expected = verity_tree_size_for_file(file_size); tree_size != expected) {
+        error_exit("Verity tree size mismatch in signature file: %s [was %lld, expected %lld].\n",
+                   signature_file.c_str(), (long long)tree_size, (long long)expected);
+    }
+
+    int32_t data_block_count = numBytesToNumBlocks(file_size);
+    int32_t leaf_nodes_count = (data_block_count + kHashesPerBlock - 1) / kHashesPerBlock;
+    D("Verity tree loaded: %s, tree size: %d (%d blocks, %d leafs)", signature_file.c_str(),
+      int(tree_size), int(numBytesToNumBlocks(tree_size)), int(leaf_nodes_count));
+
+    return {std::move(fd), tree_offset};
+}
+
+bool serve(int connection_fd, int output_fd, int argc, const char** argv) {
+    auto connection_ufd = unique_fd(connection_fd);
+    auto output_ufd = unique_fd(output_fd);
+    if (argc <= 0) {
+        error_exit("inc-server: must specify at least one file.");
+    }
+
+    std::vector<File> files;
+    files.reserve(argc);
+    for (int i = 0; i < argc; ++i) {
+        auto filepath = argv[i];
+
+        auto [file_fd, file_size] = open_fd(filepath);
+        auto [sign_fd, sign_offset] = open_signature(file_size, filepath);
+
+        files.emplace_back(filepath, i, file_size, std::move(file_fd), sign_offset,
+                           std::move(sign_fd));
+    }
+
+    IncrementalServer server(std::move(connection_ufd), std::move(output_ufd), std::move(files));
+    printf("Serving...\n");
+    fclose(stdin);
+    fclose(stdout);
+    return server.Serve();
+}
+
+}  // namespace incremental
diff --git a/adb/client/incremental_server.h b/adb/client/incremental_server.h
new file mode 100644
index 0000000..55b8215
--- /dev/null
+++ b/adb/client/incremental_server.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+namespace incremental {
+
+// Expecting arguments like:
+// {FILE1 FILE2 ...}
+// Where FILE* are files to serve.
+bool serve(int connection_fd, int output_fd, int argc, const char** argv);
+
+}  // namespace incremental
diff --git a/adb/client/incremental_utils.cpp b/adb/client/incremental_utils.cpp
new file mode 100644
index 0000000..076b766
--- /dev/null
+++ b/adb/client/incremental_utils.cpp
@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define TRACE_TAG INCREMENTAL
+
+#include "incremental_utils.h"
+
+#include <android-base/endian.h>
+#include <android-base/mapped_file.h>
+#include <android-base/strings.h>
+#include <ziparchive/zip_archive.h>
+#include <ziparchive/zip_writer.h>
+
+#include <cinttypes>
+#include <numeric>
+#include <unordered_set>
+
+#include "adb_io.h"
+#include "adb_trace.h"
+#include "sysdeps.h"
+
+namespace incremental {
+
+static constexpr inline int32_t offsetToBlockIndex(int64_t offset) {
+    return (offset & ~(kBlockSize - 1)) >> 12;
+}
+
+Size verity_tree_blocks_for_file(Size fileSize) {
+    if (fileSize == 0) {
+        return 0;
+    }
+
+    constexpr int hash_per_block = kBlockSize / kDigestSize;
+
+    Size total_tree_block_count = 0;
+
+    auto block_count = 1 + (fileSize - 1) / kBlockSize;
+    auto hash_block_count = block_count;
+    for (auto i = 0; hash_block_count > 1; i++) {
+        hash_block_count = (hash_block_count + hash_per_block - 1) / hash_per_block;
+        total_tree_block_count += hash_block_count;
+    }
+    return total_tree_block_count;
+}
+
+Size verity_tree_size_for_file(Size fileSize) {
+    return verity_tree_blocks_for_file(fileSize) * kBlockSize;
+}
+
+static inline int32_t read_int32(borrowed_fd fd) {
+    int32_t result;
+    return ReadFdExactly(fd, &result, sizeof(result)) ? result : -1;
+}
+
+static inline int32_t skip_int(borrowed_fd fd) {
+    return adb_lseek(fd, 4, SEEK_CUR);
+}
+
+static inline void append_int(borrowed_fd fd, std::vector<char>* bytes) {
+    int32_t le_val = read_int32(fd);
+    auto old_size = bytes->size();
+    bytes->resize(old_size + sizeof(le_val));
+    memcpy(bytes->data() + old_size, &le_val, sizeof(le_val));
+}
+
+static inline void append_bytes_with_size(borrowed_fd fd, std::vector<char>* bytes) {
+    int32_t le_size = read_int32(fd);
+    if (le_size < 0) {
+        return;
+    }
+    int32_t size = int32_t(le32toh(le_size));
+    auto old_size = bytes->size();
+    bytes->resize(old_size + sizeof(le_size) + size);
+    memcpy(bytes->data() + old_size, &le_size, sizeof(le_size));
+    ReadFdExactly(fd, bytes->data() + old_size + sizeof(le_size), size);
+}
+
+static inline int32_t skip_bytes_with_size(borrowed_fd fd) {
+    int32_t le_size = read_int32(fd);
+    if (le_size < 0) {
+        return -1;
+    }
+    int32_t size = int32_t(le32toh(le_size));
+    return (int32_t)adb_lseek(fd, size, SEEK_CUR);
+}
+
+std::pair<std::vector<char>, int32_t> read_id_sig_headers(borrowed_fd fd) {
+    std::vector<char> result;
+    append_int(fd, &result);              // version
+    append_bytes_with_size(fd, &result);  // hashingInfo
+    append_bytes_with_size(fd, &result);  // signingInfo
+    auto le_tree_size = read_int32(fd);
+    auto tree_size = int32_t(le32toh(le_tree_size));  // size of the verity tree
+    return {std::move(result), tree_size};
+}
+
+std::pair<off64_t, ssize_t> skip_id_sig_headers(borrowed_fd fd) {
+    skip_int(fd);                            // version
+    skip_bytes_with_size(fd);                // hashingInfo
+    auto offset = skip_bytes_with_size(fd);  // signingInfo
+    auto le_tree_size = read_int32(fd);
+    auto tree_size = int32_t(le32toh(le_tree_size));  // size of the verity tree
+    return {offset + sizeof(le_tree_size), tree_size};
+}
+
+template <class T>
+static T valueAt(borrowed_fd fd, off64_t offset) {
+    T t;
+    memset(&t, 0, sizeof(T));
+    if (adb_pread(fd, &t, sizeof(T), offset) != sizeof(T)) {
+        memset(&t, -1, sizeof(T));
+    }
+
+    return t;
+}
+
+static void appendBlocks(int32_t start, int count, std::vector<int32_t>* blocks) {
+    if (count == 1) {
+        blocks->push_back(start);
+    } else {
+        auto oldSize = blocks->size();
+        blocks->resize(oldSize + count);
+        std::iota(blocks->begin() + oldSize, blocks->end(), start);
+    }
+}
+
+template <class T>
+static void unduplicate(std::vector<T>& v) {
+    std::unordered_set<T> uniques(v.size());
+    v.erase(std::remove_if(v.begin(), v.end(),
+                           [&uniques](T t) { return !uniques.insert(t).second; }),
+            v.end());
+}
+
+static off64_t CentralDirOffset(borrowed_fd fd, Size fileSize) {
+    static constexpr int kZipEocdRecMinSize = 22;
+    static constexpr int32_t kZipEocdRecSig = 0x06054b50;
+    static constexpr int kZipEocdCentralDirSizeFieldOffset = 12;
+    static constexpr int kZipEocdCommentLengthFieldOffset = 20;
+
+    int32_t sigBuf = 0;
+    off64_t eocdOffset = -1;
+    off64_t maxEocdOffset = fileSize - kZipEocdRecMinSize;
+    int16_t commentLenBuf = 0;
+
+    // Search from the end of zip, backward to find beginning of EOCD
+    for (int16_t commentLen = 0; commentLen < fileSize; ++commentLen) {
+        sigBuf = valueAt<int32_t>(fd, maxEocdOffset - commentLen);
+        if (sigBuf == kZipEocdRecSig) {
+            commentLenBuf = valueAt<int16_t>(
+                    fd, maxEocdOffset - commentLen + kZipEocdCommentLengthFieldOffset);
+            if (commentLenBuf == commentLen) {
+                eocdOffset = maxEocdOffset - commentLen;
+                break;
+            }
+        }
+    }
+
+    if (eocdOffset < 0) {
+        return -1;
+    }
+
+    off64_t cdLen = static_cast<int64_t>(
+            valueAt<int32_t>(fd, eocdOffset + kZipEocdCentralDirSizeFieldOffset));
+
+    return eocdOffset - cdLen;
+}
+
+// Does not support APKs larger than 4GB
+static off64_t SignerBlockOffset(borrowed_fd fd, Size fileSize) {
+    static constexpr int kApkSigBlockMinSize = 32;
+    static constexpr int kApkSigBlockFooterSize = 24;
+    static constexpr int64_t APK_SIG_BLOCK_MAGIC_HI = 0x3234206b636f6c42l;
+    static constexpr int64_t APK_SIG_BLOCK_MAGIC_LO = 0x20676953204b5041l;
+
+    off64_t cdOffset = CentralDirOffset(fd, fileSize);
+    if (cdOffset < 0) {
+        return -1;
+    }
+    // CD offset is where original signer block ends. Search backwards for magic and footer.
+    if (cdOffset < kApkSigBlockMinSize ||
+        valueAt<int64_t>(fd, cdOffset - 2 * sizeof(int64_t)) != APK_SIG_BLOCK_MAGIC_LO ||
+        valueAt<int64_t>(fd, cdOffset - sizeof(int64_t)) != APK_SIG_BLOCK_MAGIC_HI) {
+        return -1;
+    }
+    int32_t signerSizeInFooter = valueAt<int32_t>(fd, cdOffset - kApkSigBlockFooterSize);
+    off64_t signerBlockOffset = cdOffset - signerSizeInFooter - sizeof(int64_t);
+    if (signerBlockOffset < 0) {
+        return -1;
+    }
+    int32_t signerSizeInHeader = valueAt<int32_t>(fd, signerBlockOffset);
+    if (signerSizeInFooter != signerSizeInHeader) {
+        return -1;
+    }
+
+    return signerBlockOffset;
+}
+
+static std::vector<int32_t> ZipPriorityBlocks(off64_t signerBlockOffset, Size fileSize) {
+    int32_t signerBlockIndex = offsetToBlockIndex(signerBlockOffset);
+    int32_t lastBlockIndex = offsetToBlockIndex(fileSize);
+    const auto numPriorityBlocks = lastBlockIndex - signerBlockIndex + 1;
+
+    std::vector<int32_t> zipPriorityBlocks;
+
+    // Some magic here: most of zip libraries perform a scan for EOCD record starting at the offset
+    // of a maximum comment size from the end of the file. This means the last 65-ish KBs will be
+    // accessed first, followed by the rest of the central directory blocks. Make sure we
+    // send the data in the proper order, as central directory can be quite big by itself.
+    static constexpr auto kMaxZipCommentSize = 64 * 1024;
+    static constexpr auto kNumBlocksInEocdSearch = kMaxZipCommentSize / kBlockSize + 1;
+    if (numPriorityBlocks > kNumBlocksInEocdSearch) {
+        appendBlocks(lastBlockIndex - kNumBlocksInEocdSearch + 1, kNumBlocksInEocdSearch,
+                     &zipPriorityBlocks);
+        appendBlocks(signerBlockIndex, numPriorityBlocks - kNumBlocksInEocdSearch,
+                     &zipPriorityBlocks);
+    } else {
+        appendBlocks(signerBlockIndex, numPriorityBlocks, &zipPriorityBlocks);
+    }
+
+    // Somehow someone keeps accessing the start of the archive, even if there's nothing really
+    // interesting there...
+    appendBlocks(0, 1, &zipPriorityBlocks);
+    return zipPriorityBlocks;
+}
+
+[[maybe_unused]] static ZipArchiveHandle openZipArchiveFd(borrowed_fd fd) {
+    bool transferFdOwnership = false;
+#ifdef _WIN32
+    //
+    // Need to create a special CRT FD here as the current one is not compatible with
+    // normal read()/write() calls that libziparchive uses.
+    // To make this work we have to create a copy of the file handle, as CRT doesn't care
+    // and closes it together with the new descriptor.
+    //
+    // Note: don't move this into a helper function, it's better to be hard to reuse because
+    //       the code is ugly and won't work unless it's a last resort.
+    //
+    auto handle = adb_get_os_handle(fd);
+    HANDLE dupedHandle;
+    if (!::DuplicateHandle(::GetCurrentProcess(), handle, ::GetCurrentProcess(), &dupedHandle, 0,
+                           false, DUPLICATE_SAME_ACCESS)) {
+        D("%s failed at DuplicateHandle: %d", __func__, (int)::GetLastError());
+        return {};
+    }
+    int osfd = _open_osfhandle((intptr_t)dupedHandle, _O_RDONLY | _O_BINARY);
+    if (osfd < 0) {
+        D("%s failed at _open_osfhandle: %d", __func__, errno);
+        ::CloseHandle(handle);
+        return {};
+    }
+    transferFdOwnership = true;
+#else
+    int osfd = fd.get();
+#endif
+    ZipArchiveHandle zip;
+    if (OpenArchiveFd(osfd, "apk_fd", &zip, transferFdOwnership) != 0) {
+        D("%s failed at OpenArchiveFd: %d", __func__, errno);
+#ifdef _WIN32
+        // "_close()" is a secret WinCRT name for the regular close() function.
+        _close(osfd);
+#endif
+        return {};
+    }
+    return zip;
+}
+
+static std::pair<ZipArchiveHandle, std::unique_ptr<android::base::MappedFile>> openZipArchive(
+        borrowed_fd fd, Size fileSize) {
+#ifndef __LP64__
+    if (fileSize >= INT_MAX) {
+        return {openZipArchiveFd(fd), nullptr};
+    }
+#endif
+    auto mapping =
+            android::base::MappedFile::FromOsHandle(adb_get_os_handle(fd), 0, fileSize, PROT_READ);
+    if (!mapping) {
+        D("%s failed at FromOsHandle: %d", __func__, errno);
+        return {};
+    }
+    ZipArchiveHandle zip;
+    if (OpenArchiveFromMemory(mapping->data(), mapping->size(), "apk_mapping", &zip) != 0) {
+        D("%s failed at OpenArchiveFromMemory: %d", __func__, errno);
+        return {};
+    }
+    return {zip, std::move(mapping)};
+}
+
+// TODO(b/151676293): avoid using libziparchive as it reads local file headers
+// which causes additional performance cost. Instead, only read from central directory.
+static std::vector<int32_t> InstallationPriorityBlocks(borrowed_fd fd, Size fileSize) {
+    auto [zip, _] = openZipArchive(fd, fileSize);
+    if (!zip) {
+        return {};
+    }
+
+    void* cookie = nullptr;
+    if (StartIteration(zip, &cookie) != 0) {
+        D("%s failed at StartIteration: %d", __func__, errno);
+        return {};
+    }
+
+    std::vector<int32_t> installationPriorityBlocks;
+    ZipEntry entry;
+    std::string_view entryName;
+    while (Next(cookie, &entry, &entryName) == 0) {
+        if (entryName == "resources.arsc" || entryName == "AndroidManifest.xml" ||
+            entryName.starts_with("lib/")) {
+            // Full entries are needed for installation
+            off64_t entryStartOffset = entry.offset;
+            off64_t entryEndOffset =
+                    entryStartOffset +
+                    (entry.method == kCompressStored ? entry.uncompressed_length
+                                                     : entry.compressed_length) +
+                    (entry.has_data_descriptor ? 16 /* sizeof(DataDescriptor) */ : 0);
+            int32_t startBlockIndex = offsetToBlockIndex(entryStartOffset);
+            int32_t endBlockIndex = offsetToBlockIndex(entryEndOffset);
+            int32_t numNewBlocks = endBlockIndex - startBlockIndex + 1;
+            appendBlocks(startBlockIndex, numNewBlocks, &installationPriorityBlocks);
+            D("\tadding to priority blocks: '%.*s'", (int)entryName.size(), entryName.data());
+        } else if (entryName == "classes.dex") {
+            // Only the head is needed for installation
+            int32_t startBlockIndex = offsetToBlockIndex(entry.offset);
+            appendBlocks(startBlockIndex, 2, &installationPriorityBlocks);
+            D("\tadding to priority blocks: '%.*s'", (int)entryName.size(), entryName.data());
+        }
+    }
+
+    EndIteration(cookie);
+    CloseArchive(zip);
+    return installationPriorityBlocks;
+}
+
+std::vector<int32_t> PriorityBlocksForFile(const std::string& filepath, borrowed_fd fd,
+                                           Size fileSize) {
+    if (!android::base::EndsWithIgnoreCase(filepath, ".apk")) {
+        return {};
+    }
+    off64_t signerOffset = SignerBlockOffset(fd, fileSize);
+    if (signerOffset < 0) {
+        // No signer block? not a valid APK
+        return {};
+    }
+    std::vector<int32_t> priorityBlocks = ZipPriorityBlocks(signerOffset, fileSize);
+    std::vector<int32_t> installationPriorityBlocks = InstallationPriorityBlocks(fd, fileSize);
+
+    priorityBlocks.insert(priorityBlocks.end(), installationPriorityBlocks.begin(),
+                          installationPriorityBlocks.end());
+    unduplicate(priorityBlocks);
+    return priorityBlocks;
+}
+
+}  // namespace incremental
diff --git a/adb/client/incremental_utils.h b/adb/client/incremental_utils.h
new file mode 100644
index 0000000..fe2914d
--- /dev/null
+++ b/adb/client/incremental_utils.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "adb_unique_fd.h"
+
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include <stdint.h>
+
+#include <android-base/off64_t.h>
+
+namespace incremental {
+
+using Size = int64_t;
+constexpr int kBlockSize = 4096;
+constexpr int kSha256DigestSize = 32;
+constexpr int kDigestSize = kSha256DigestSize;
+
+constexpr std::string_view IDSIG = ".idsig";
+
+std::vector<int32_t> PriorityBlocksForFile(const std::string& filepath, borrowed_fd fd,
+                                           Size fileSize);
+
+Size verity_tree_blocks_for_file(Size fileSize);
+Size verity_tree_size_for_file(Size fileSize);
+
+std::pair<std::vector<char>, int32_t> read_id_sig_headers(borrowed_fd fd);
+std::pair<off64_t, ssize_t> skip_id_sig_headers(borrowed_fd fd);
+
+}  // namespace incremental
diff --git a/adb/client/main.cpp b/adb/client/main.cpp
index 0c5c28f..78f7b8f 100644
--- a/adb/client/main.cpp
+++ b/adb/client/main.cpp
@@ -35,6 +35,8 @@
 #include "adb_client.h"
 #include "adb_listeners.h"
 #include "adb_utils.h"
+#include "adb_wifi.h"
+#include "client/usb.h"
 #include "commandline.h"
 #include "sysdeps/chrono.h"
 #include "transport.h"
@@ -118,6 +120,7 @@
     init_transport_registration();
     init_reconnect_handler();
 
+    adb_wifi_init();
     if (!getenv("ADB_MDNS") || strcmp(getenv("ADB_MDNS"), "0") != 0) {
         init_mdns_transport_discovery();
     }
@@ -129,7 +132,7 @@
     }
 
     if (!getenv("ADB_EMU") || strcmp(getenv("ADB_EMU"), "0") != 0) {
-        local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
+        local_init(android::base::StringPrintf("tcp:%d", DEFAULT_ADB_LOCAL_TRANSPORT_PORT));
     }
 
     std::string error;
diff --git a/adb/client/pairing/pairing_client.cpp b/adb/client/pairing/pairing_client.cpp
new file mode 100644
index 0000000..04bbceb
--- /dev/null
+++ b/adb/client/pairing/pairing_client.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "client/pairing/pairing_client.h"
+
+#include <atomic>
+#include <iomanip>
+#include <mutex>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/parsenetaddress.h>
+#include <android-base/stringprintf.h>
+#include <android-base/thread_annotations.h>
+#include <android-base/unique_fd.h>
+#include <cutils/sockets.h>
+#include "sysdeps.h"
+
+namespace adbwifi {
+namespace pairing {
+
+using android::base::unique_fd;
+
+namespace {
+
+struct ConnectionDeleter {
+    void operator()(PairingConnectionCtx* p) { pairing_connection_destroy(p); }
+};  // ConnectionDeleter
+using ConnectionPtr = std::unique_ptr<PairingConnectionCtx, ConnectionDeleter>;
+
+class PairingClientImpl : public PairingClient {
+  public:
+    virtual ~PairingClientImpl();
+
+    explicit PairingClientImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                               const Data& priv_key);
+
+    // Starts the pairing client. This call is non-blocking. Upon pairing
+    // completion, |cb| will be called with the PeerInfo on success,
+    // or an empty value on failure.
+    //
+    // Returns true if PairingClient was successfully started. Otherwise,
+    // return false.
+    virtual bool Start(std::string_view ip_addr, pairing_client_result_cb cb,
+                       void* opaque) override;
+
+    static void OnPairingResult(const PeerInfo* peer_info, int fd, void* opaque);
+
+  private:
+    // Setup and start the PairingConnection
+    bool StartConnection();
+
+    enum class State {
+        Ready,
+        Running,
+        Stopped,
+    };
+
+    State state_ = State::Ready;
+    Data pswd_;
+    PeerInfo peer_info_;
+    Data cert_;
+    Data priv_key_;
+    std::string host_;
+    int port_;
+
+    ConnectionPtr connection_;
+    pairing_client_result_cb cb_;
+    void* opaque_ = nullptr;
+};  // PairingClientImpl
+
+PairingClientImpl::PairingClientImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                                     const Data& priv_key)
+    : pswd_(pswd), peer_info_(peer_info), cert_(cert), priv_key_(priv_key) {
+    CHECK(!pswd_.empty() && !cert_.empty() && !priv_key_.empty());
+
+    state_ = State::Ready;
+}
+
+PairingClientImpl::~PairingClientImpl() {
+    // Make sure to kill the PairingConnection before terminating the fdevent
+    // looper.
+    if (connection_ != nullptr) {
+        connection_.reset();
+    }
+}
+
+bool PairingClientImpl::Start(std::string_view ip_addr, pairing_client_result_cb cb, void* opaque) {
+    CHECK(!ip_addr.empty());
+    cb_ = cb;
+    opaque_ = opaque;
+
+    if (state_ != State::Ready) {
+        LOG(ERROR) << "PairingClient already running or finished";
+        return false;
+    }
+
+    // Try to parse the host address
+    std::string err;
+    CHECK(android::base::ParseNetAddress(std::string(ip_addr), &host_, &port_, nullptr, &err));
+    CHECK(port_ > 0 && port_ <= 65535);
+
+    if (!StartConnection()) {
+        LOG(ERROR) << "Unable to start PairingClient connection";
+        state_ = State::Stopped;
+        return false;
+    }
+
+    state_ = State::Running;
+    return true;
+}
+
+bool PairingClientImpl::StartConnection() {
+    std::string err;
+    const int timeout = 10;  // seconds
+    unique_fd fd(network_connect(host_, port_, SOCK_STREAM, timeout, &err));
+    if (fd.get() == -1) {
+        LOG(ERROR) << "Failed to start pairing connection client [" << err << "]";
+        return false;
+    }
+    int off = 1;
+    adb_setsockopt(fd.get(), IPPROTO_TCP, TCP_NODELAY, &off, sizeof(off));
+
+    connection_ = ConnectionPtr(
+            pairing_connection_client_new(pswd_.data(), pswd_.size(), &peer_info_, cert_.data(),
+                                          cert_.size(), priv_key_.data(), priv_key_.size()));
+    CHECK(connection_);
+
+#ifdef _WIN32
+    int osh = cast_handle_to_int(adb_get_os_handle(fd.release()));
+#else
+    int osh = adb_get_os_handle(fd.release());
+#endif
+    if (!pairing_connection_start(connection_.get(), osh, OnPairingResult, this)) {
+        LOG(ERROR) << "PairingClient failed to start the PairingConnection";
+        state_ = State::Stopped;
+        return false;
+    }
+
+    return true;
+}
+
+// static
+void PairingClientImpl::OnPairingResult(const PeerInfo* peer_info, int /* fd */, void* opaque) {
+    auto* p = reinterpret_cast<PairingClientImpl*>(opaque);
+    p->cb_(peer_info, p->opaque_);
+}
+
+}  // namespace
+
+// static
+std::unique_ptr<PairingClient> PairingClient::Create(const Data& pswd, const PeerInfo& peer_info,
+                                                     const Data& cert, const Data& priv_key) {
+    CHECK(!pswd.empty());
+    CHECK(!cert.empty());
+    CHECK(!priv_key.empty());
+
+    return std::unique_ptr<PairingClient>(new PairingClientImpl(pswd, peer_info, cert, priv_key));
+}
+
+}  // namespace pairing
+}  // namespace adbwifi
diff --git a/adb/client/pairing/pairing_client.h b/adb/client/pairing/pairing_client.h
new file mode 100644
index 0000000..dbd72a5
--- /dev/null
+++ b/adb/client/pairing/pairing_client.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <string_view>
+#include <vector>
+
+#include "adb/pairing/pairing_connection.h"
+
+namespace adbwifi {
+namespace pairing {
+
+typedef void (*pairing_client_result_cb)(const PeerInfo*, void*);
+
+// PairingClient is the client side of the PairingConnection protocol. It will
+// attempt to connect to a PairingServer specified at |host| and |port|, and
+// allocate a new PairingConnection for processing.
+//
+// See pairing_connection_test.cpp for example usage.
+//
+class PairingClient {
+  public:
+    using Data = std::vector<uint8_t>;
+
+    virtual ~PairingClient() = default;
+
+    // Starts the pairing client. This call is non-blocking. Upon completion,
+    // if the pairing was successful, then |cb| will be called with the PeerInfo
+    // containing the info of the trusted peer. Otherwise, |cb| will be
+    // called with an empty value. Start can only be called once in the lifetime
+    // of this object.
+    //
+    // Returns true if PairingClient was successfully started. Otherwise,
+    // returns false.
+    virtual bool Start(std::string_view ip_addr, pairing_client_result_cb cb, void* opaque) = 0;
+
+    // Creates a new PairingClient instance. May return null if unable
+    // to create an instance. |pswd|, |certificate|, |priv_key| and
+    // |ip_addr| cannot be empty. |peer_info| must contain non-empty strings for
+    // the guid and name fields.
+    static std::unique_ptr<PairingClient> Create(const Data& pswd, const PeerInfo& peer_info,
+                                                 const Data& certificate, const Data& priv_key);
+
+  protected:
+    PairingClient() = default;
+};  // class PairingClient
+
+}  // namespace pairing
+}  // namespace adbwifi
diff --git a/adb/client/pairing/tests/pairing_connection_test.cpp b/adb/client/pairing/tests/pairing_connection_test.cpp
new file mode 100644
index 0000000..c69c1c2
--- /dev/null
+++ b/adb/client/pairing/tests/pairing_connection_test.cpp
@@ -0,0 +1,473 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AdbWifiPairingConnectionTest"
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+
+#include <adbwifi/pairing/pairing_server.h>
+#include <android-base/logging.h>
+#include <gtest/gtest.h>
+
+#include "adb/client/pairing/tests/pairing_client.h"
+
+namespace adbwifi {
+namespace pairing {
+
+static const std::string kTestServerCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIBljCCAT2gAwIBAgIBATAKBggqhkjOPQQDAjAzMQswCQYDVQQGEwJVUzEQMA4G\n"
+        "A1UECgwHQW5kcm9pZDESMBAGA1UEAwwJbG9jYWxob3N0MB4XDTE5MTEwNzAyMDkx\n"
+        "NVoXDTI5MTEwNDAyMDkxNVowMzELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJv\n"
+        "aWQxEjAQBgNVBAMMCWxvY2FsaG9zdDBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IA\n"
+        "BCXRovy3RhtK0Khle48vUmkcuI0OF7K8o9sVPE4oVnp24l+cCYr3BtrgifoHPgj4\n"
+        "vq7n105qzK7ngBHH+LBmYIijQjBAMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/\n"
+        "BAQDAgGGMB0GA1UdDgQWBBQi4eskzqVG3SCX2CwJF/aTZqUcuTAKBggqhkjOPQQD\n"
+        "AgNHADBEAiBPYvLOCIvPDtq3vMF7A2z7t7JfcCmbC7g8ftEVJucJBwIgepf+XjTb\n"
+        "L7RCE16p7iVkpHUrWAOl7zDxqD+jaji5MkQ=\n"
+        "-----END CERTIFICATE-----\n";
+
+static const std::string kTestServerPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgSCaskWPtutIgh8uQ\n"
+        "UBH6ZIea5Kxm7m6kkGNkd8FYPSOhRANCAAQl0aL8t0YbStCoZXuPL1JpHLiNDhey\n"
+        "vKPbFTxOKFZ6duJfnAmK9wba4In6Bz4I+L6u59dOasyu54ARx/iwZmCI\n"
+        "-----END PRIVATE KEY-----\n";
+
+static const std::string kTestClientCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIBlzCCAT2gAwIBAgIBATAKBggqhkjOPQQDAjAzMQswCQYDVQQGEwJVUzEQMA4G\n"
+        "A1UECgwHQW5kcm9pZDESMBAGA1UEAwwJbG9jYWxob3N0MB4XDTE5MTEwOTAxNTAy\n"
+        "OFoXDTI5MTEwNjAxNTAyOFowMzELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJv\n"
+        "aWQxEjAQBgNVBAMMCWxvY2FsaG9zdDBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IA\n"
+        "BGW+RuoEIzbt42zAuZzbXaC0bvh8n4OLFDnqkkW6kWA43GYg/mUMVc9vg/nuxyuM\n"
+        "aT0KqbTaLhm+NjCXVRnxBrajQjBAMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/\n"
+        "BAQDAgGGMB0GA1UdDgQWBBTjCaC8/NXgdBz9WlMVCNwhx7jn0jAKBggqhkjOPQQD\n"
+        "AgNIADBFAiB/xp2boj7b1KK2saS6BL59deo/TvfgZ+u8HPq4k4VP3gIhAMXswp9W\n"
+        "XdlziccQdj+0KpbUojDKeHOr4fIj/+LxsWPa\n"
+        "-----END CERTIFICATE-----\n";
+
+static const std::string kTestClientPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgFw/CWY1f6TSB70AF\n"
+        "yVe8n6QdYFu8HW5t/tij2SrXx42hRANCAARlvkbqBCM27eNswLmc212gtG74fJ+D\n"
+        "ixQ56pJFupFgONxmIP5lDFXPb4P57scrjGk9Cqm02i4ZvjYwl1UZ8Qa2\n"
+        "-----END PRIVATE KEY-----\n";
+
+class AdbWifiPairingConnectionTest : public testing::Test {
+  protected:
+    virtual void SetUp() override {}
+
+    virtual void TearDown() override {}
+
+    void initPairing(const std::vector<uint8_t> server_pswd,
+                     const std::vector<uint8_t> client_pswd) {
+        std::vector<uint8_t> cert;
+        std::vector<uint8_t> key;
+        // Include the null-byte as well.
+        cert.assign(reinterpret_cast<const uint8_t*>(kTestServerCert.data()),
+                    reinterpret_cast<const uint8_t*>(kTestServerCert.data()) +
+                            kTestServerCert.size() + 1);
+        key.assign(reinterpret_cast<const uint8_t*>(kTestServerPrivKey.data()),
+                   reinterpret_cast<const uint8_t*>(kTestServerPrivKey.data()) +
+                           kTestServerPrivKey.size() + 1);
+        server_ = PairingServer::create(server_pswd, server_info_, cert, key, kDefaultPairingPort);
+        cert.assign(reinterpret_cast<const uint8_t*>(kTestClientCert.data()),
+                    reinterpret_cast<const uint8_t*>(kTestClientCert.data()) +
+                            kTestClientCert.size() + 1);
+        key.assign(reinterpret_cast<const uint8_t*>(kTestClientPrivKey.data()),
+                   reinterpret_cast<const uint8_t*>(kTestClientPrivKey.data()) +
+                           kTestClientPrivKey.size() + 1);
+        client_ = PairingClient::create(client_pswd, client_info_, cert, key, "127.0.0.1");
+    }
+
+    std::unique_ptr<PairingServer> createServer(const std::vector<uint8_t> pswd) {
+        std::vector<uint8_t> cert;
+        std::vector<uint8_t> key;
+        // Include the null-byte as well.
+        cert.assign(reinterpret_cast<const uint8_t*>(kTestServerCert.data()),
+                    reinterpret_cast<const uint8_t*>(kTestServerCert.data()) +
+                            kTestServerCert.size() + 1);
+        key.assign(reinterpret_cast<const uint8_t*>(kTestServerPrivKey.data()),
+                   reinterpret_cast<const uint8_t*>(kTestServerPrivKey.data()) +
+                           kTestServerPrivKey.size() + 1);
+        return PairingServer::create(pswd, server_info_, cert, key, kDefaultPairingPort);
+    }
+
+    std::unique_ptr<PairingClient> createClient(const std::vector<uint8_t> pswd) {
+        std::vector<uint8_t> cert;
+        std::vector<uint8_t> key;
+        // Include the null-byte as well.
+        cert.assign(reinterpret_cast<const uint8_t*>(kTestClientCert.data()),
+                    reinterpret_cast<const uint8_t*>(kTestClientCert.data()) +
+                            kTestClientCert.size() + 1);
+        key.assign(reinterpret_cast<const uint8_t*>(kTestClientPrivKey.data()),
+                   reinterpret_cast<const uint8_t*>(kTestClientPrivKey.data()) +
+                           kTestClientPrivKey.size() + 1);
+        return PairingClient::create(pswd, client_info_, cert, key, "127.0.0.1");
+    }
+
+    std::unique_ptr<PairingServer> server_;
+    const PeerInfo server_info_ = {
+            .name = "my_server_name",
+            .guid = "my_server_guid",
+    };
+    std::unique_ptr<PairingClient> client_;
+    const PeerInfo client_info_ = {
+            .name = "my_client_name",
+            .guid = "my_client_guid",
+    };
+};
+
+TEST_F(AdbWifiPairingConnectionTest, ServerCreation) {
+    // All parameters bad
+    auto server = PairingServer::create({}, {}, {}, {}, -1);
+    EXPECT_EQ(nullptr, server);
+    // Bad password
+    server = PairingServer::create({}, server_info_, {0x01}, {0x01}, -1);
+    EXPECT_EQ(nullptr, server);
+    // Bad peer_info
+    server = PairingServer::create({0x01}, {}, {0x01}, {0x01}, -1);
+    EXPECT_EQ(nullptr, server);
+    // Bad certificate
+    server = PairingServer::create({0x01}, server_info_, {}, {0x01}, -1);
+    EXPECT_EQ(nullptr, server);
+    // Bad private key
+    server = PairingServer::create({0x01}, server_info_, {0x01}, {}, -1);
+    EXPECT_EQ(nullptr, server);
+    // Bad port
+    server = PairingServer::create({0x01}, server_info_, {0x01}, {0x01}, -1);
+    EXPECT_EQ(nullptr, server);
+    // Valid params
+    server = PairingServer::create({0x01}, server_info_, {0x01}, {0x01}, 7776);
+    EXPECT_NE(nullptr, server);
+}
+
+TEST_F(AdbWifiPairingConnectionTest, ClientCreation) {
+    // All parameters bad
+    auto client = PairingClient::create({}, client_info_, {}, {}, "");
+    EXPECT_EQ(nullptr, client);
+    // Bad password
+    client = PairingClient::create({}, client_info_, {0x01}, {0x01}, "127.0.0.1");
+    EXPECT_EQ(nullptr, client);
+    // Bad peer_info
+    client = PairingClient::create({0x01}, {}, {0x01}, {0x01}, "127.0.0.1");
+    EXPECT_EQ(nullptr, client);
+    // Bad certificate
+    client = PairingClient::create({0x01}, client_info_, {}, {0x01}, "127.0.0.1");
+    EXPECT_EQ(nullptr, client);
+    // Bad private key
+    client = PairingClient::create({0x01}, client_info_, {0x01}, {}, "127.0.0.1");
+    EXPECT_EQ(nullptr, client);
+    // Bad ip address
+    client = PairingClient::create({0x01}, client_info_, {0x01}, {0x01}, "");
+    EXPECT_EQ(nullptr, client);
+    // Valid params
+    client = PairingClient::create({0x01}, client_info_, {0x01}, {0x01}, "127.0.0.1");
+    EXPECT_NE(nullptr, client);
+}
+
+TEST_F(AdbWifiPairingConnectionTest, SmokeValidPairing) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    initPairing(pswd, pswd);
+
+    // Start the server first, to open the port for connections
+    std::mutex server_mutex;
+    std::condition_variable server_cv;
+    std::unique_lock<std::mutex> server_lock(server_mutex);
+
+    auto server_callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                               void* opaque) {
+        ASSERT_NE(nullptr, peer_info);
+        ASSERT_NE(nullptr, cert);
+        EXPECT_FALSE(cert->empty());
+        EXPECT_EQ(nullptr, opaque);
+
+        // Verify the peer_info and cert
+        ASSERT_EQ(strlen(peer_info->name), strlen(client_info_.name));
+        EXPECT_EQ(::memcmp(peer_info->name, client_info_.name, strlen(client_info_.name)), 0);
+        ASSERT_EQ(strlen(peer_info->guid), strlen(client_info_.guid));
+        EXPECT_EQ(::memcmp(peer_info->guid, client_info_.guid, strlen(client_info_.guid)), 0);
+        ASSERT_EQ(cert->size(), kTestClientCert.size() + 1);
+        EXPECT_EQ(::memcmp(cert->data(), kTestClientCert.data(), kTestClientCert.size() + 1), 0);
+
+        std::lock_guard<std::mutex> lock(server_mutex);
+        server_cv.notify_one();
+    };
+    ASSERT_TRUE(server_->start(server_callback, nullptr));
+
+    // Start the client
+    bool got_valid_pairing = false;
+    std::mutex client_mutex;
+    std::condition_variable client_cv;
+    std::unique_lock<std::mutex> client_lock(client_mutex);
+    auto client_callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                               void* opaque) {
+        ASSERT_NE(nullptr, peer_info);
+        ASSERT_NE(nullptr, cert);
+        EXPECT_FALSE(cert->empty());
+        EXPECT_EQ(nullptr, opaque);
+
+        // Verify the peer_info and cert
+        ASSERT_EQ(strlen(peer_info->name), strlen(server_info_.name));
+        EXPECT_EQ(::memcmp(peer_info->name, server_info_.name, strlen(server_info_.name)), 0);
+        ASSERT_EQ(strlen(peer_info->guid), strlen(server_info_.guid));
+        EXPECT_EQ(::memcmp(peer_info->guid, server_info_.guid, strlen(server_info_.guid)), 0);
+        ASSERT_EQ(cert->size(), kTestServerCert.size() + 1);
+        EXPECT_EQ(::memcmp(cert->data(), kTestServerCert.data(), kTestServerCert.size() + 1), 0);
+
+        got_valid_pairing = (peer_info != nullptr && cert != nullptr && !cert->empty());
+        std::lock_guard<std::mutex> lock(client_mutex);
+        client_cv.notify_one();
+    };
+    ASSERT_TRUE(client_->start(client_callback, nullptr));
+    client_cv.wait(client_lock);
+
+    // Kill server if the pairing failed, since server only shuts down when
+    // it gets a valid pairing.
+    if (!got_valid_pairing) {
+        server_lock.unlock();
+        server_.reset();
+    } else {
+        server_cv.wait(server_lock);
+    }
+}
+
+TEST_F(AdbWifiPairingConnectionTest, CancelPairing) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    std::vector<uint8_t> pswd2{0x01, 0x03, 0x05, 0x06};
+    initPairing(pswd, pswd2);
+
+    // Start the server first, to open the port for connections
+    std::mutex server_mutex;
+    std::condition_variable server_cv;
+    std::unique_lock<std::mutex> server_lock(server_mutex);
+
+    bool server_got_valid_pairing = true;
+    auto server_callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                               void* opaque) {
+        // Pairing will be cancelled, which should initiate this callback with
+        // empty values.
+        ASSERT_EQ(nullptr, peer_info);
+        ASSERT_EQ(nullptr, cert);
+        EXPECT_EQ(nullptr, opaque);
+        std::lock_guard<std::mutex> lock(server_mutex);
+        server_cv.notify_one();
+        server_got_valid_pairing = false;
+    };
+    ASSERT_TRUE(server_->start(server_callback, nullptr));
+
+    // Start the client (should fail because of different passwords).
+    bool got_valid_pairing = false;
+    std::mutex client_mutex;
+    std::condition_variable client_cv;
+    std::unique_lock<std::mutex> client_lock(client_mutex);
+    auto client_callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                               void* opaque) {
+        ASSERT_EQ(nullptr, peer_info);
+        ASSERT_EQ(nullptr, cert);
+        EXPECT_EQ(nullptr, opaque);
+
+        got_valid_pairing = (peer_info != nullptr && cert != nullptr && !cert->empty());
+        std::lock_guard<std::mutex> lock(client_mutex);
+        client_cv.notify_one();
+    };
+    ASSERT_TRUE(client_->start(client_callback, nullptr));
+    client_cv.wait(client_lock);
+
+    server_lock.unlock();
+    // This should trigger the callback to be on the same thread.
+    server_.reset();
+    EXPECT_FALSE(server_got_valid_pairing);
+}
+
+TEST_F(AdbWifiPairingConnectionTest, MultipleClientsAllFail) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    std::vector<uint8_t> pswd2{0x01, 0x03, 0x05, 0x06};
+
+    auto server = createServer(pswd);
+    ASSERT_NE(nullptr, server);
+    // Start the server first, to open the port for connections
+    std::mutex server_mutex;
+    std::condition_variable server_cv;
+    std::unique_lock<std::mutex> server_lock(server_mutex);
+
+    bool server_got_valid_pairing = true;
+    auto server_callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                               void* opaque) {
+        // Pairing will be cancelled, which should initiate this callback with
+        // empty values.
+        ASSERT_EQ(nullptr, peer_info);
+        ASSERT_EQ(nullptr, cert);
+        EXPECT_EQ(nullptr, opaque);
+        std::lock_guard<std::mutex> lock(server_mutex);
+        server_cv.notify_one();
+        server_got_valid_pairing = false;
+    };
+    ASSERT_TRUE(server->start(server_callback, nullptr));
+
+    // Start multiple clients, all with bad passwords
+    std::vector<std::unique_ptr<PairingClient>> clients;
+    int num_clients_done = 0;
+    int test_num_clients = 5;
+    std::mutex client_mutex;
+    std::condition_variable client_cv;
+    std::unique_lock<std::mutex> client_lock(client_mutex);
+    while (clients.size() < test_num_clients) {
+        auto client = createClient(pswd2);
+        ASSERT_NE(nullptr, client);
+        auto callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                            void* opaque) {
+            ASSERT_EQ(nullptr, peer_info);
+            ASSERT_EQ(nullptr, cert);
+            EXPECT_EQ(nullptr, opaque);
+
+            {
+                std::lock_guard<std::mutex> lock(client_mutex);
+                num_clients_done++;
+            }
+            client_cv.notify_one();
+        };
+        ASSERT_TRUE(client->start(callback, nullptr));
+        clients.push_back(std::move(client));
+    }
+
+    client_cv.wait(client_lock, [&]() { return (num_clients_done == test_num_clients); });
+    EXPECT_EQ(num_clients_done, test_num_clients);
+
+    server_lock.unlock();
+    // This should trigger the callback to be on the same thread.
+    server.reset();
+    EXPECT_FALSE(server_got_valid_pairing);
+}
+
+TEST_F(AdbWifiPairingConnectionTest, MultipleClientsOnePass) {
+    // Send multiple clients with bad passwords, but send the last one with the
+    // correct password.
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    std::vector<uint8_t> pswd2{0x01, 0x03, 0x05, 0x06};
+
+    auto server = createServer(pswd);
+    ASSERT_NE(nullptr, server);
+    // Start the server first, to open the port for connections
+    std::mutex server_mutex;
+    std::condition_variable server_cv;
+    std::unique_lock<std::mutex> server_lock(server_mutex);
+
+    bool server_got_valid_pairing = false;
+    auto server_callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                               void* opaque) {
+        // Pairing will be cancelled, which should initiate this callback with
+        // empty values.
+
+        ASSERT_NE(nullptr, peer_info);
+        ASSERT_NE(nullptr, cert);
+        EXPECT_FALSE(cert->empty());
+        EXPECT_EQ(nullptr, opaque);
+
+        // Verify the peer_info and cert
+        ASSERT_EQ(strlen(peer_info->name), strlen(client_info_.name));
+        EXPECT_EQ(::memcmp(peer_info->name, client_info_.name, strlen(client_info_.name)), 0);
+        ASSERT_EQ(strlen(peer_info->guid), strlen(client_info_.guid));
+        EXPECT_EQ(::memcmp(peer_info->guid, client_info_.guid, strlen(client_info_.guid)), 0);
+        ASSERT_EQ(cert->size(), kTestClientCert.size() + 1);
+        EXPECT_EQ(::memcmp(cert->data(), kTestClientCert.data(), kTestClientCert.size() + 1), 0);
+
+        std::lock_guard<std::mutex> lock(server_mutex);
+        server_got_valid_pairing = true;
+        server_cv.notify_one();
+    };
+    ASSERT_TRUE(server->start(server_callback, nullptr));
+
+    // Start multiple clients, all with bad passwords (except for the last one)
+    std::vector<std::unique_ptr<PairingClient>> clients;
+    int num_clients_done = 0;
+    int test_num_clients = 5;
+    std::mutex client_mutex;
+    std::condition_variable client_cv;
+    std::unique_lock<std::mutex> client_lock(client_mutex);
+    bool got_valid_pairing = false;
+    while (clients.size() < test_num_clients) {
+        std::unique_ptr<PairingClient> client;
+        if (clients.size() == test_num_clients - 1) {
+            // Make this one have the valid password
+            client = createClient(pswd);
+            ASSERT_NE(nullptr, client);
+            auto callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                                void* opaque) {
+                ASSERT_NE(nullptr, peer_info);
+                ASSERT_NE(nullptr, cert);
+                EXPECT_FALSE(cert->empty());
+                EXPECT_EQ(nullptr, opaque);
+
+                // Verify the peer_info and cert
+                ASSERT_EQ(strlen(peer_info->name), strlen(server_info_.name));
+                EXPECT_EQ(::memcmp(peer_info->name, server_info_.name, strlen(server_info_.name)),
+                          0);
+                ASSERT_EQ(strlen(peer_info->guid), strlen(server_info_.guid));
+                EXPECT_EQ(::memcmp(peer_info->guid, server_info_.guid, strlen(server_info_.guid)),
+                          0);
+                ASSERT_EQ(cert->size(), kTestServerCert.size() + 1);
+                EXPECT_EQ(
+                        ::memcmp(cert->data(), kTestServerCert.data(), kTestServerCert.size() + 1),
+                        0);
+                got_valid_pairing = (peer_info != nullptr && cert != nullptr && !cert->empty());
+
+                {
+                    std::lock_guard<std::mutex> lock(client_mutex);
+                    num_clients_done++;
+                }
+                client_cv.notify_one();
+            };
+            ASSERT_TRUE(client->start(callback, nullptr));
+        } else {
+            client = createClient(pswd2);
+            ASSERT_NE(nullptr, client);
+            auto callback = [&](const PeerInfo* peer_info, const std::vector<uint8_t>* cert,
+                                void* opaque) {
+                ASSERT_EQ(nullptr, peer_info);
+                ASSERT_EQ(nullptr, cert);
+                EXPECT_EQ(nullptr, opaque);
+
+                {
+                    std::lock_guard<std::mutex> lock(client_mutex);
+                    num_clients_done++;
+                }
+                client_cv.notify_one();
+            };
+            ASSERT_TRUE(client->start(callback, nullptr));
+        }
+        clients.push_back(std::move(client));
+    }
+
+    client_cv.wait(client_lock, [&]() { return (num_clients_done == test_num_clients); });
+    EXPECT_EQ(num_clients_done, test_num_clients);
+
+    // Kill server if the pairing failed, since server only shuts down when
+    // it gets a valid pairing.
+    if (!got_valid_pairing) {
+        server_lock.unlock();
+        server_.reset();
+    } else {
+        server_cv.wait(server_lock);
+    }
+    EXPECT_TRUE(server_got_valid_pairing);
+}
+
+}  // namespace pairing
+}  // namespace adbwifi
diff --git a/adb/client/pairing/tests/pairing_server.cpp b/adb/client/pairing/tests/pairing_server.cpp
new file mode 100644
index 0000000..9201e7a
--- /dev/null
+++ b/adb/client/pairing/tests/pairing_server.cpp
@@ -0,0 +1,426 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adbwifi/pairing/pairing_server.h"
+
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+
+#include <atomic>
+#include <deque>
+#include <iomanip>
+#include <mutex>
+#include <sstream>
+#include <thread>
+#include <tuple>
+#include <unordered_map>
+#include <variant>
+#include <vector>
+
+#include <adbwifi/pairing/pairing_connection.h>
+#include <android-base/logging.h>
+#include <android-base/parsenetaddress.h>
+#include <android-base/thread_annotations.h>
+#include <android-base/unique_fd.h>
+#include <cutils/sockets.h>
+
+namespace adbwifi {
+namespace pairing {
+
+using android::base::ScopedLockAssertion;
+using android::base::unique_fd;
+
+namespace {
+
+// The implimentation has two background threads running: one to handle and
+// accept any new pairing connection requests (socket accept), and the other to
+// handle connection events (connection started, connection finished).
+class PairingServerImpl : public PairingServer {
+  public:
+    virtual ~PairingServerImpl();
+
+    // All parameters must be non-empty.
+    explicit PairingServerImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                               const Data& priv_key, int port);
+
+    // Starts the pairing server. This call is non-blocking. Upon completion,
+    // if the pairing was successful, then |cb| will be called with the PublicKeyHeader
+    // containing the info of the trusted peer. Otherwise, |cb| will be
+    // called with an empty value. Start can only be called once in the lifetime
+    // of this object.
+    //
+    // Returns true if PairingServer was successfully started. Otherwise,
+    // returns false.
+    virtual bool start(PairingConnection::ResultCallback cb, void* opaque) override;
+
+  private:
+    // Setup the server socket to accept incoming connections
+    bool setupServer();
+    // Force stop the server thread.
+    void stopServer();
+
+    // handles a new pairing client connection
+    bool handleNewClientConnection(int fd) EXCLUDES(conn_mutex_);
+
+    // ======== connection events thread =============
+    std::mutex conn_mutex_;
+    std::condition_variable conn_cv_;
+
+    using FdVal = int;
+    using ConnectionPtr = std::unique_ptr<PairingConnection>;
+    using NewConnectionEvent = std::tuple<unique_fd, ConnectionPtr>;
+    // <fd, PeerInfo.name, PeerInfo.guid, certificate>
+    using ConnectionFinishedEvent = std::tuple<FdVal, std::optional<std::string>,
+                                               std::optional<std::string>, std::optional<Data>>;
+    using ConnectionEvent = std::variant<NewConnectionEvent, ConnectionFinishedEvent>;
+    // Queue for connections to write into. We have a separate queue to read
+    // from, in order to minimize the time the server thread is blocked.
+    std::deque<ConnectionEvent> conn_write_queue_ GUARDED_BY(conn_mutex_);
+    std::deque<ConnectionEvent> conn_read_queue_;
+    // Map of fds to their PairingConnections currently running.
+    std::unordered_map<FdVal, ConnectionPtr> connections_;
+
+    // Two threads launched when starting the pairing server:
+    // 1) A server thread that waits for incoming client connections, and
+    // 2) A connection events thread that synchonizes events from all of the
+    //    clients, since each PairingConnection is running in it's own thread.
+    void startConnectionEventsThread();
+    void startServerThread();
+
+    std::thread conn_events_thread_;
+    void connectionEventsWorker();
+    std::thread server_thread_;
+    void serverWorker();
+    bool is_terminate_ GUARDED_BY(conn_mutex_) = false;
+
+    enum class State {
+        Ready,
+        Running,
+        Stopped,
+    };
+    State state_ = State::Ready;
+    Data pswd_;
+    PeerInfo peer_info_;
+    Data cert_;
+    Data priv_key_;
+    int port_ = -1;
+
+    PairingConnection::ResultCallback cb_;
+    void* opaque_ = nullptr;
+    bool got_valid_pairing_ = false;
+
+    static const int kEpollConstSocket = 0;
+    // Used to break the server thread from epoll_wait
+    static const int kEpollConstEventFd = 1;
+    unique_fd epoll_fd_;
+    unique_fd server_fd_;
+    unique_fd event_fd_;
+};  // PairingServerImpl
+
+PairingServerImpl::PairingServerImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                                     const Data& priv_key, int port)
+    : pswd_(pswd), peer_info_(peer_info), cert_(cert), priv_key_(priv_key), port_(port) {
+    CHECK(!pswd_.empty() && !cert_.empty() && !priv_key_.empty() && port_ > 0);
+    CHECK('\0' == peer_info.name[kPeerNameLength - 1] &&
+          '\0' == peer_info.guid[kPeerGuidLength - 1] && strlen(peer_info.name) > 0 &&
+          strlen(peer_info.guid) > 0);
+}
+
+PairingServerImpl::~PairingServerImpl() {
+    // Since these connections have references to us, let's make sure they
+    // destruct before us.
+    if (server_thread_.joinable()) {
+        stopServer();
+        server_thread_.join();
+    }
+
+    {
+        std::lock_guard<std::mutex> lock(conn_mutex_);
+        is_terminate_ = true;
+    }
+    conn_cv_.notify_one();
+    if (conn_events_thread_.joinable()) {
+        conn_events_thread_.join();
+    }
+
+    // Notify the cb_ if it hasn't already.
+    if (!got_valid_pairing_ && cb_ != nullptr) {
+        cb_(nullptr, nullptr, opaque_);
+    }
+}
+
+bool PairingServerImpl::start(PairingConnection::ResultCallback cb, void* opaque) {
+    cb_ = cb;
+    opaque_ = opaque;
+
+    if (state_ != State::Ready) {
+        LOG(ERROR) << "PairingServer already running or stopped";
+        return false;
+    }
+
+    if (!setupServer()) {
+        LOG(ERROR) << "Unable to start PairingServer";
+        state_ = State::Stopped;
+        return false;
+    }
+
+    state_ = State::Running;
+    return true;
+}
+
+void PairingServerImpl::stopServer() {
+    if (event_fd_.get() == -1) {
+        return;
+    }
+    uint64_t value = 1;
+    ssize_t rc = write(event_fd_.get(), &value, sizeof(value));
+    if (rc == -1) {
+        // This can happen if the server didn't start.
+        PLOG(ERROR) << "write to eventfd failed";
+    } else if (rc != sizeof(value)) {
+        LOG(FATAL) << "write to event returned short (" << rc << ")";
+    }
+}
+
+bool PairingServerImpl::setupServer() {
+    epoll_fd_.reset(epoll_create1(EPOLL_CLOEXEC));
+    if (epoll_fd_ == -1) {
+        PLOG(ERROR) << "failed to create epoll fd";
+        return false;
+    }
+
+    event_fd_.reset(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK));
+    if (event_fd_ == -1) {
+        PLOG(ERROR) << "failed to create eventfd";
+        return false;
+    }
+
+    server_fd_.reset(socket_inaddr_any_server(port_, SOCK_STREAM));
+    if (server_fd_.get() == -1) {
+        PLOG(ERROR) << "Failed to start pairing connection server";
+        return false;
+    } else if (fcntl(server_fd_.get(), F_SETFD, FD_CLOEXEC) != 0) {
+        PLOG(ERROR) << "Failed to make server socket cloexec";
+        return false;
+    } else if (fcntl(server_fd_.get(), F_SETFD, O_NONBLOCK) != 0) {
+        PLOG(ERROR) << "Failed to make server socket nonblocking";
+        return false;
+    }
+
+    startConnectionEventsThread();
+    startServerThread();
+    return true;
+}
+
+void PairingServerImpl::startServerThread() {
+    server_thread_ = std::thread([this]() { serverWorker(); });
+}
+
+void PairingServerImpl::startConnectionEventsThread() {
+    conn_events_thread_ = std::thread([this]() { connectionEventsWorker(); });
+}
+
+void PairingServerImpl::serverWorker() {
+    {
+        struct epoll_event event;
+        event.events = EPOLLIN;
+        event.data.u64 = kEpollConstSocket;
+        CHECK_EQ(0, epoll_ctl(epoll_fd_.get(), EPOLL_CTL_ADD, server_fd_.get(), &event));
+    }
+
+    {
+        struct epoll_event event;
+        event.events = EPOLLIN;
+        event.data.u64 = kEpollConstEventFd;
+        CHECK_EQ(0, epoll_ctl(epoll_fd_.get(), EPOLL_CTL_ADD, event_fd_.get(), &event));
+    }
+
+    while (true) {
+        struct epoll_event events[2];
+        int rc = TEMP_FAILURE_RETRY(epoll_wait(epoll_fd_.get(), events, 2, -1));
+        if (rc == -1) {
+            PLOG(ERROR) << "epoll_wait failed";
+            return;
+        } else if (rc == 0) {
+            LOG(ERROR) << "epoll_wait returned 0";
+            return;
+        }
+
+        for (int i = 0; i < rc; ++i) {
+            struct epoll_event& event = events[i];
+            switch (event.data.u64) {
+                case kEpollConstSocket:
+                    handleNewClientConnection(server_fd_.get());
+                    break;
+                case kEpollConstEventFd:
+                    uint64_t dummy;
+                    int rc = TEMP_FAILURE_RETRY(read(event_fd_.get(), &dummy, sizeof(dummy)));
+                    if (rc != sizeof(dummy)) {
+                        PLOG(FATAL) << "failed to read from eventfd (rc=" << rc << ")";
+                    }
+                    return;
+            }
+        }
+    }
+}
+
+void PairingServerImpl::connectionEventsWorker() {
+    for (;;) {
+        // Transfer the write queue to the read queue.
+        {
+            std::unique_lock<std::mutex> lock(conn_mutex_);
+            ScopedLockAssertion assume_locked(conn_mutex_);
+
+            if (is_terminate_) {
+                // We check |is_terminate_| twice because condition_variable's
+                // notify() only wakes up a thread if it is in the wait state
+                // prior to notify(). Furthermore, we aren't holding the mutex
+                // when processing the events in |conn_read_queue_|.
+                return;
+            }
+            if (conn_write_queue_.empty()) {
+                // We need to wait for new events, or the termination signal.
+                conn_cv_.wait(lock, [this]() REQUIRES(conn_mutex_) {
+                    return (is_terminate_ || !conn_write_queue_.empty());
+                });
+            }
+            if (is_terminate_) {
+                // We're done.
+                return;
+            }
+            // Move all events into the read queue.
+            conn_read_queue_ = std::move(conn_write_queue_);
+            conn_write_queue_.clear();
+        }
+
+        // Process all events in the read queue.
+        while (conn_read_queue_.size() > 0) {
+            auto& event = conn_read_queue_.front();
+            if (auto* p = std::get_if<NewConnectionEvent>(&event)) {
+                // Ignore if we are already at the max number of connections
+                if (connections_.size() >= internal::kMaxConnections) {
+                    conn_read_queue_.pop_front();
+                    continue;
+                }
+                auto [ufd, connection] = std::move(*p);
+                int fd = ufd.release();
+                bool started = connection->start(
+                        fd,
+                        [fd](const PeerInfo* peer_info, const Data* cert, void* opaque) {
+                            auto* p = reinterpret_cast<PairingServerImpl*>(opaque);
+
+                            ConnectionFinishedEvent event;
+                            if (peer_info != nullptr && cert != nullptr) {
+                                event = std::make_tuple(fd, std::string(peer_info->name),
+                                                        std::string(peer_info->guid), Data(*cert));
+                            } else {
+                                event = std::make_tuple(fd, std::nullopt, std::nullopt,
+                                                        std::nullopt);
+                            }
+                            {
+                                std::lock_guard<std::mutex> lock(p->conn_mutex_);
+                                p->conn_write_queue_.push_back(std::move(event));
+                            }
+                            p->conn_cv_.notify_one();
+                        },
+                        this);
+                if (!started) {
+                    LOG(ERROR) << "PairingServer unable to start a PairingConnection fd=" << fd;
+                    ufd.reset(fd);
+                } else {
+                    connections_[fd] = std::move(connection);
+                }
+            } else if (auto* p = std::get_if<ConnectionFinishedEvent>(&event)) {
+                auto [fd, name, guid, cert] = std::move(*p);
+                if (name.has_value() && guid.has_value() && cert.has_value() && !name->empty() &&
+                    !guid->empty() && !cert->empty()) {
+                    // Valid pairing. Let's shutdown the server and close any
+                    // pairing connections in progress.
+                    stopServer();
+                    connections_.clear();
+
+                    CHECK_LE(name->size(), kPeerNameLength);
+                    CHECK_LE(guid->size(), kPeerGuidLength);
+                    PeerInfo info = {};
+                    strncpy(info.name, name->data(), name->size());
+                    strncpy(info.guid, guid->data(), guid->size());
+
+                    cb_(&info, &*cert, opaque_);
+
+                    got_valid_pairing_ = true;
+                    return;
+                }
+                // Invalid pairing. Close the invalid connection.
+                if (connections_.find(fd) != connections_.end()) {
+                    connections_.erase(fd);
+                }
+            }
+            conn_read_queue_.pop_front();
+        }
+    }
+}
+
+bool PairingServerImpl::handleNewClientConnection(int fd) {
+    unique_fd ufd(TEMP_FAILURE_RETRY(accept4(fd, nullptr, nullptr, SOCK_CLOEXEC)));
+    if (ufd == -1) {
+        PLOG(WARNING) << "adb_socket_accept failed fd=" << fd;
+        return false;
+    }
+    auto connection = PairingConnection::create(PairingConnection::Role::Server, pswd_, peer_info_,
+                                                cert_, priv_key_);
+    if (connection == nullptr) {
+        LOG(ERROR) << "PairingServer unable to create a PairingConnection fd=" << fd;
+        return false;
+    }
+    // send the new connection to the connection thread for further processing
+    NewConnectionEvent event = std::make_tuple(std::move(ufd), std::move(connection));
+    {
+        std::lock_guard<std::mutex> lock(conn_mutex_);
+        conn_write_queue_.push_back(std::move(event));
+    }
+    conn_cv_.notify_one();
+
+    return true;
+}
+
+}  // namespace
+
+// static
+std::unique_ptr<PairingServer> PairingServer::create(const Data& pswd, const PeerInfo& peer_info,
+                                                     const Data& cert, const Data& priv_key,
+                                                     int port) {
+    if (pswd.empty() || cert.empty() || priv_key.empty() || port <= 0) {
+        return nullptr;
+    }
+    // Make sure peer_info has a non-empty, null-terminated string for guid and
+    // name.
+    if ('\0' != peer_info.name[kPeerNameLength - 1] ||
+        '\0' != peer_info.guid[kPeerGuidLength - 1] || strlen(peer_info.name) == 0 ||
+        strlen(peer_info.guid) == 0) {
+        LOG(ERROR) << "The GUID/short name fields are empty or not null-terminated";
+        return nullptr;
+    }
+
+    if (port != kDefaultPairingPort) {
+        LOG(WARNING) << "Starting server with non-default pairing port=" << port;
+    }
+
+    return std::unique_ptr<PairingServer>(
+            new PairingServerImpl(pswd, peer_info, cert, priv_key, port));
+}
+
+}  // namespace pairing
+}  // namespace adbwifi
diff --git a/adb/client/pairing/tests/pairing_server.h b/adb/client/pairing/tests/pairing_server.h
new file mode 100644
index 0000000..6fb51cc
--- /dev/null
+++ b/adb/client/pairing/tests/pairing_server.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <string_view>
+#include <vector>
+
+#include <adbwifi/pairing/pairing_connection.h>
+
+namespace adbwifi {
+namespace pairing {
+
+// PairingServer is the server side of the PairingConnection protocol. It will
+// listen for incoming PairingClient connections, and allocate a new
+// PairingConnection per client for processing. PairingServer can handle multiple
+// connections, but the first one to establish the pairing will be the only one
+// to succeed. All others will be disconnected.
+//
+// See pairing_connection_test.cpp for example usage.
+//
+class PairingServer {
+  public:
+    using Data = std::vector<uint8_t>;
+
+    virtual ~PairingServer() = default;
+
+    // Starts the pairing server. This call is non-blocking. Upon completion,
+    // if the pairing was successful, then |cb| will be called with the PeerInfo
+    // containing the info of the trusted peer. Otherwise, |cb| will be
+    // called with an empty value. Start can only be called once in the lifetime
+    // of this object.
+    //
+    // Returns true if PairingServer was successfully started. Otherwise,
+    // returns false.
+    virtual bool start(PairingConnection::ResultCallback cb, void* opaque) = 0;
+
+    // Creates a new PairingServer instance. May return null if unable
+    // to create an instance. |pswd|, |certificate| and |priv_key| cannot
+    // be empty. |port| is the port PairingServer will listen to PairingClient
+    // connections on. |peer_info| must contain non-empty strings for the guid
+    // and name fields.
+    static std::unique_ptr<PairingServer> create(const Data& pswd, const PeerInfo& peer_info,
+                                                 const Data& certificate, const Data& priv_key,
+                                                 int port);
+
+  protected:
+    PairingServer() = default;
+};  // class PairingServer
+
+}  // namespace pairing
+}  // namespace adbwifi
diff --git a/adb/client/transport_mdns.cpp b/adb/client/transport_mdns.cpp
index 283fac5..22b9b18 100644
--- a/adb/client/transport_mdns.cpp
+++ b/adb/client/transport_mdns.cpp
@@ -24,18 +24,46 @@
 #include <arpa/inet.h>
 #endif
 
+#include <memory>
 #include <thread>
+#include <vector>
 
 #include <android-base/stringprintf.h>
+#include <android-base/strings.h>
 #include <dns_sd.h>
 
+#include "adb_client.h"
 #include "adb_mdns.h"
 #include "adb_trace.h"
-#include "fdevent.h"
+#include "adb_utils.h"
+#include "adb_wifi.h"
+#include "fdevent/fdevent.h"
 #include "sysdeps.h"
 
-static DNSServiceRef service_ref;
-static fdevent* service_ref_fde;
+static DNSServiceRef service_refs[kNumADBDNSServices];
+static fdevent* service_ref_fdes[kNumADBDNSServices];
+
+static int adb_DNSServiceIndexByName(const char* regType) {
+    for (int i = 0; i < kNumADBDNSServices; ++i) {
+        if (!strncmp(regType, kADBDNSServices[i], strlen(kADBDNSServices[i]))) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+static bool adb_DNSServiceShouldConnect(const char* regType, const char* serviceName) {
+    int index = adb_DNSServiceIndexByName(regType);
+    if (index == kADBTransportServiceRefIndex) {
+        // Ignore adb-EMULATOR* service names, as it interferes with the
+        // emulator ports that are already connected.
+        if (android::base::StartsWith(serviceName, "adb-EMULATOR")) {
+            LOG(INFO) << "Ignoring emulator transport service [" << serviceName << "]";
+            return false;
+        }
+    }
+    return (index == kADBTransportServiceRefIndex || index == kADBSecureConnectServiceRefIndex);
+}
 
 // Use adb_DNSServiceRefSockFD() instead of calling DNSServiceRefSockFD()
 // directly so that the socket is put through the appropriate compatibility
@@ -72,8 +100,10 @@
             return;
         }
 
-        DNSServiceRefDeallocate(sdRef_);
+        // Order matters here! Must destroy the fdevent first since it has a
+        // reference to |sdRef_|.
         fdevent_destroy(fde_);
+        DNSServiceRefDeallocate(sdRef_);
     }
 
   protected:
@@ -81,6 +111,10 @@
 
     void Initialize() {
         fde_ = fdevent_create(adb_DNSServiceRefSockFD(sdRef_), pump_service_ref, &sdRef_);
+        if (fde_ == nullptr) {
+            D("Unable to create fdevent");
+            return;
+        }
         fdevent_set(fde_, FDE_READ);
         initialized_ = true;
     }
@@ -94,10 +128,16 @@
   public:
     virtual ~ResolvedService() = default;
 
-    ResolvedService(std::string name, uint32_t interfaceIndex,
-                    const char* hosttarget, uint16_t port) :
-            name_(name),
-            port_(port) {
+    ResolvedService(std::string serviceName, std::string regType, uint32_t interfaceIndex,
+                    const char* hosttarget, uint16_t port, int version)
+        : serviceName_(serviceName),
+          regType_(regType),
+          hosttarget_(hosttarget),
+          port_(port),
+          sa_family_(0),
+          ip_addr_data_(NULL),
+          serviceVersion_(version) {
+        memset(ip_addr_, 0, sizeof(ip_addr_));
 
         /* TODO: We should be able to get IPv6 support by adding
          * kDNSServiceProtocol_IPv6 to the flags below. However, when we do
@@ -116,45 +156,179 @@
         } else {
             Initialize();
         }
+
+        D("Client version: %d Service version: %d\n", clientVersion_, serviceVersion_);
+    }
+
+    bool ConnectSecureWifiDevice() {
+        if (!adb_wifi_is_known_host(serviceName_)) {
+            LOG(INFO) << "serviceName=" << serviceName_ << " not in keystore";
+            return false;
+        }
+
+        std::string response;
+        connect_device(android::base::StringPrintf(addr_format_.c_str(), ip_addr_, port_),
+                       &response);
+        D("Secure connect to %s regtype %s (%s:%hu) : %s", serviceName_.c_str(), regType_.c_str(),
+          ip_addr_, port_, response.c_str());
+        return true;
     }
 
     void Connect(const sockaddr* address) {
-        char ip_addr[INET6_ADDRSTRLEN];
-        const void* ip_addr_data;
-        const char* addr_format;
+        sa_family_ = address->sa_family;
 
-        if (address->sa_family == AF_INET) {
-            ip_addr_data =
-                &reinterpret_cast<const sockaddr_in*>(address)->sin_addr;
-            addr_format = "%s:%hu";
-        } else if (address->sa_family == AF_INET6) {
-            ip_addr_data =
-                &reinterpret_cast<const sockaddr_in6*>(address)->sin6_addr;
-            addr_format = "[%s]:%hu";
-        } else { // Should be impossible
+        if (sa_family_ == AF_INET) {
+            ip_addr_data_ = &reinterpret_cast<const sockaddr_in*>(address)->sin_addr;
+            addr_format_ = "%s:%hu";
+        } else if (sa_family_ == AF_INET6) {
+            ip_addr_data_ = &reinterpret_cast<const sockaddr_in6*>(address)->sin6_addr;
+            addr_format_ = "[%s]:%hu";
+        } else {  // Should be impossible
             D("mDNS resolved non-IP address.");
             return;
         }
 
         // Winsock version requires the const cast Because Microsoft.
-        if (!inet_ntop(address->sa_family, const_cast<void*>(ip_addr_data),
-                       ip_addr, INET6_ADDRSTRLEN)) {
+        if (!inet_ntop(sa_family_, const_cast<void*>(ip_addr_data_), ip_addr_, sizeof(ip_addr_))) {
             D("Could not convert IP address to string.");
             return;
         }
 
-        std::string response;
-        connect_device(android::base::StringPrintf(addr_format, ip_addr, port_),
-                       &response);
-        D("Connect to %s (%s:%hu) : %s", name_.c_str(), ip_addr, port_,
-          response.c_str());
+        // adb secure service needs to do something different from just
+        // connecting here.
+        if (adb_DNSServiceShouldConnect(regType_.c_str(), serviceName_.c_str())) {
+            std::string response;
+            D("Attempting to serviceName=[%s], regtype=[%s] ipaddr=(%s:%hu)", serviceName_.c_str(),
+              regType_.c_str(), ip_addr_, port_);
+            int index = adb_DNSServiceIndexByName(regType_.c_str());
+            if (index == kADBSecureConnectServiceRefIndex) {
+                ConnectSecureWifiDevice();
+            } else {
+                connect_device(android::base::StringPrintf(addr_format_.c_str(), ip_addr_, port_),
+                               &response);
+                D("Connect to %s regtype %s (%s:%hu) : %s", serviceName_.c_str(), regType_.c_str(),
+                  ip_addr_, port_, response.c_str());
+            }
+        } else {
+            D("Not immediately connecting to serviceName=[%s], regtype=[%s] ipaddr=(%s:%hu)",
+              serviceName_.c_str(), regType_.c_str(), ip_addr_, port_);
+        }
+
+        int adbSecureServiceType = serviceIndex();
+        switch (adbSecureServiceType) {
+            case kADBSecurePairingServiceRefIndex:
+                sAdbSecurePairingServices->push_back(this);
+                break;
+            case kADBSecureConnectServiceRefIndex:
+                sAdbSecureConnectServices->push_back(this);
+                break;
+            default:
+                break;
+        }
     }
 
+    int serviceIndex() const { return adb_DNSServiceIndexByName(regType_.c_str()); }
+
+    std::string hostTarget() const { return hosttarget_; }
+
+    std::string serviceName() const { return serviceName_; }
+
+    std::string ipAddress() const { return ip_addr_; }
+
+    uint16_t port() const { return port_; }
+
+    using ServiceRegistry = std::vector<ResolvedService*>;
+
+    static ServiceRegistry* sAdbSecurePairingServices;
+    static ServiceRegistry* sAdbSecureConnectServices;
+
+    static void initAdbSecure();
+
+    static void forEachService(const ServiceRegistry& services, const std::string& hostname,
+                               adb_secure_foreach_service_callback cb);
+
+    static bool connectByServiceName(const ServiceRegistry& services,
+                                     const std::string& service_name);
+
   private:
-    std::string name_;
+    int clientVersion_ = ADB_SECURE_CLIENT_VERSION;
+    std::string addr_format_;
+    std::string serviceName_;
+    std::string regType_;
+    std::string hosttarget_;
     const uint16_t port_;
+    int sa_family_;
+    const void* ip_addr_data_;
+    char ip_addr_[INET6_ADDRSTRLEN];
+    int serviceVersion_;
 };
 
+// static
+std::vector<ResolvedService*>* ResolvedService::sAdbSecurePairingServices = NULL;
+
+// static
+std::vector<ResolvedService*>* ResolvedService::sAdbSecureConnectServices = NULL;
+
+// static
+void ResolvedService::initAdbSecure() {
+    if (!sAdbSecurePairingServices) {
+        sAdbSecurePairingServices = new ServiceRegistry;
+    }
+    if (!sAdbSecureConnectServices) {
+        sAdbSecureConnectServices = new ServiceRegistry;
+    }
+}
+
+// static
+void ResolvedService::forEachService(const ServiceRegistry& services,
+                                     const std::string& wanted_service_name,
+                                     adb_secure_foreach_service_callback cb) {
+    initAdbSecure();
+
+    for (auto service : services) {
+        auto service_name = service->serviceName();
+        auto ip = service->ipAddress();
+        auto port = service->port();
+
+        if (wanted_service_name == "") {
+            cb(service_name.c_str(), ip.c_str(), port);
+        } else if (service_name == wanted_service_name) {
+            cb(service_name.c_str(), ip.c_str(), port);
+        }
+    }
+}
+
+// static
+bool ResolvedService::connectByServiceName(const ServiceRegistry& services,
+                                           const std::string& service_name) {
+    initAdbSecure();
+    for (auto service : services) {
+        if (service_name == service->serviceName()) {
+            D("Got service_name match [%s]", service->serviceName().c_str());
+            return service->ConnectSecureWifiDevice();
+        }
+    }
+    D("No registered serviceNames matched [%s]", service_name.c_str());
+    return false;
+}
+
+void adb_secure_foreach_pairing_service(const char* service_name,
+                                        adb_secure_foreach_service_callback cb) {
+    ResolvedService::forEachService(*ResolvedService::sAdbSecurePairingServices,
+                                    service_name ? service_name : "", cb);
+}
+
+void adb_secure_foreach_connect_service(const char* service_name,
+                                        adb_secure_foreach_service_callback cb) {
+    ResolvedService::forEachService(*ResolvedService::sAdbSecureConnectServices,
+                                    service_name ? service_name : "", cb);
+}
+
+bool adb_secure_connect_by_service_name(const char* service_name) {
+    return ResolvedService::connectByServiceName(*ResolvedService::sAdbSecureConnectServices,
+                                                 service_name);
+}
+
 static void DNSSD_API register_service_ip(DNSServiceRef /*sdRef*/,
                                           DNSServiceFlags /*flags*/,
                                           uint32_t /*interfaceIndex*/,
@@ -167,6 +341,12 @@
     std::unique_ptr<ResolvedService> data(
         reinterpret_cast<ResolvedService*>(context));
     data->Connect(address);
+
+    // For ADB Secure services, keep those ResolvedService's around
+    // for later processing with secure connection establishment.
+    if (data->serviceIndex() != kADBTransportServiceRefIndex) {
+        data.release();
+    }
 }
 
 static void DNSSD_API register_resolved_mdns_service(DNSServiceRef sdRef,
@@ -182,18 +362,23 @@
 
 class DiscoveredService : public AsyncServiceRef {
   public:
-    DiscoveredService(uint32_t interfaceIndex, const char* serviceName,
-                      const char* regtype, const char* domain)
-        : serviceName_(serviceName) {
-
+    DiscoveredService(uint32_t interfaceIndex, const char* serviceName, const char* regtype,
+                      const char* domain)
+        : serviceName_(serviceName), regType_(regtype) {
         DNSServiceErrorType ret =
             DNSServiceResolve(&sdRef_, 0, interfaceIndex, serviceName, regtype,
                               domain, register_resolved_mdns_service,
                               reinterpret_cast<void*>(this));
 
-        if (ret != kDNSServiceErr_NoError) {
-            D("Got %d from DNSServiceResolve.", ret);
-        } else {
+        D("DNSServiceResolve for "
+          "interfaceIndex %u "
+          "serviceName %s "
+          "regtype %s "
+          "domain %s "
+          ": %d",
+          interfaceIndex, serviceName, regtype, domain, ret);
+
+        if (ret == kDNSServiceErr_NoError) {
             Initialize();
         }
     }
@@ -202,20 +387,82 @@
         return serviceName_.c_str();
     }
 
+    const char* RegType() { return regType_.c_str(); }
+
   private:
     std::string serviceName_;
+    std::string regType_;
 };
 
-static void DNSSD_API register_resolved_mdns_service(DNSServiceRef sdRef,
-                                                     DNSServiceFlags flags,
-                                                     uint32_t interfaceIndex,
-                                                     DNSServiceErrorType errorCode,
-                                                     const char* fullname,
-                                                     const char* hosttarget,
-                                                     uint16_t port,
-                                                     uint16_t /*txtLen*/,
-                                                     const unsigned char* /*txtRecord*/,
-                                                     void* context) {
+static void adb_RemoveDNSService(const char* regType, const char* serviceName) {
+    int index = adb_DNSServiceIndexByName(regType);
+    ResolvedService::ServiceRegistry* services;
+    switch (index) {
+        case kADBSecurePairingServiceRefIndex:
+            services = ResolvedService::sAdbSecurePairingServices;
+            break;
+        case kADBSecureConnectServiceRefIndex:
+            services = ResolvedService::sAdbSecureConnectServices;
+            break;
+        default:
+            return;
+    }
+
+    std::string sName(serviceName);
+    services->erase(std::remove_if(
+            services->begin(), services->end(),
+            [&sName](ResolvedService* service) { return (sName == service->serviceName()); }));
+}
+
+// Returns the version the device wanted to advertise,
+// or -1 if parsing fails.
+static int parse_version_from_txt_record(uint16_t txtLen, const unsigned char* txtRecord) {
+    if (!txtLen) return -1;
+    if (!txtRecord) return -1;
+
+    // https://tools.ietf.org/html/rfc6763
+    // """
+    // 6.1.  General Format Rules for DNS TXT Records
+    //
+    // A DNS TXT record can be up to 65535 (0xFFFF) bytes long.  The total
+    // length is indicated by the length given in the resource record header
+    // in the DNS message.  There is no way to tell directly from the data
+    // alone how long it is (e.g., there is no length count at the start, or
+    // terminating NULL byte at the end).
+    // """
+
+    // Let's trust the TXT record's length byte
+    // Worst case, it wastes 255 bytes
+    std::vector<char> recordAsString(txtLen + 1, '\0');
+    char* str = recordAsString.data();
+
+    memcpy(str, txtRecord + 1 /* skip the length byte */, txtLen);
+
+    // Check if it's the version key
+    static const char* versionKey = "v=";
+    size_t versionKeyLen = strlen(versionKey);
+
+    if (strncmp(versionKey, str, versionKeyLen)) return -1;
+
+    auto valueStart = str + versionKeyLen;
+
+    long parsedNumber = strtol(valueStart, 0, 10);
+
+    // No valid conversion. Also, 0
+    // is not a valid version.
+    if (!parsedNumber) return -1;
+
+    // Outside bounds of long.
+    if (parsedNumber == LONG_MIN || parsedNumber == LONG_MAX) return -1;
+
+    // Possibly valid version
+    return static_cast<int>(parsedNumber);
+}
+
+static void DNSSD_API register_resolved_mdns_service(
+        DNSServiceRef sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
+        DNSServiceErrorType errorCode, const char* fullname, const char* hosttarget, uint16_t port,
+        uint16_t txtLen, const unsigned char* txtRecord, void* context) {
     D("Resolved a service.");
     std::unique_ptr<DiscoveredService> discovered(
         reinterpret_cast<DiscoveredService*>(context));
@@ -225,58 +472,76 @@
         return;
     }
 
+    // TODO: Reject certain combinations of invalid or mismatched client and
+    // service versions here before creating anything.
+    // At the moment, there is nothing to reject, so accept everything
+    // as an optimistic default.
+    auto serviceVersion = parse_version_from_txt_record(txtLen, txtRecord);
 
-    auto resolved =
-        new ResolvedService(discovered->ServiceName(),
-                            interfaceIndex, hosttarget, ntohs(port));
+    auto resolved = new ResolvedService(discovered->ServiceName(), discovered->RegType(),
+                                        interfaceIndex, hosttarget, ntohs(port), serviceVersion);
 
     if (! resolved->Initialized()) {
+        D("Unable to init resolved service");
         delete resolved;
     }
 
     if (flags) { /* Only ever equals MoreComing or 0 */
+        D("releasing discovered service");
         discovered.release();
     }
 }
 
-static void DNSSD_API register_mdns_transport(DNSServiceRef sdRef,
-                                              DNSServiceFlags flags,
-                                              uint32_t interfaceIndex,
-                                              DNSServiceErrorType errorCode,
-                                              const char* serviceName,
-                                              const char* regtype,
-                                              const char* domain,
-                                              void*  /*context*/) {
-    D("Registering a transport.");
+static void DNSSD_API on_service_browsed(DNSServiceRef sdRef, DNSServiceFlags flags,
+                                         uint32_t interfaceIndex, DNSServiceErrorType errorCode,
+                                         const char* serviceName, const char* regtype,
+                                         const char* domain, void* /*context*/) {
     if (errorCode != kDNSServiceErr_NoError) {
         D("Got error %d during mDNS browse.", errorCode);
         DNSServiceRefDeallocate(sdRef);
-        fdevent_destroy(service_ref_fde);
+        int serviceIndex = adb_DNSServiceIndexByName(regtype);
+        if (serviceIndex != -1) {
+            fdevent_destroy(service_ref_fdes[serviceIndex]);
+        }
         return;
     }
 
-    auto discovered = new DiscoveredService(interfaceIndex, serviceName, regtype, domain);
-    if (!discovered->Initialized()) {
-        delete discovered;
+    if (flags & kDNSServiceFlagsAdd) {
+        D("%s: Discover found new serviceName=[%s] regtype=[%s] domain=[%s]", __func__, serviceName,
+          regtype, domain);
+        auto discovered = new DiscoveredService(interfaceIndex, serviceName, regtype, domain);
+        if (!discovered->Initialized()) {
+            delete discovered;
+        }
+    } else {
+        D("%s: Discover lost serviceName=[%s] regtype=[%s] domain=[%s]", __func__, serviceName,
+          regtype, domain);
+        adb_RemoveDNSService(regtype, serviceName);
     }
 }
 
 void init_mdns_transport_discovery_thread(void) {
-    DNSServiceErrorType errorCode = DNSServiceBrowse(&service_ref, 0, 0, kADBServiceType, nullptr,
-                                                     register_mdns_transport, nullptr);
+    int errorCodes[kNumADBDNSServices];
 
-    if (errorCode != kDNSServiceErr_NoError) {
-        D("Got %d initiating mDNS browse.", errorCode);
-        return;
+    for (int i = 0; i < kNumADBDNSServices; ++i) {
+        errorCodes[i] = DNSServiceBrowse(&service_refs[i], 0, 0, kADBDNSServices[i], nullptr,
+                                         on_service_browsed, nullptr);
+
+        if (errorCodes[i] != kDNSServiceErr_NoError) {
+            D("Got %d browsing for mDNS service %s.", errorCodes[i], kADBDNSServices[i]);
+        }
+
+        if (errorCodes[i] == kDNSServiceErr_NoError) {
+            fdevent_run_on_main_thread([i]() {
+                service_ref_fdes[i] = fdevent_create(adb_DNSServiceRefSockFD(service_refs[i]),
+                                                     pump_service_ref, &service_refs[i]);
+                fdevent_set(service_ref_fdes[i], FDE_READ);
+            });
+        }
     }
-
-    fdevent_run_on_main_thread([]() {
-        service_ref_fde =
-            fdevent_create(adb_DNSServiceRefSockFD(service_ref), pump_service_ref, &service_ref);
-        fdevent_set(service_ref_fde, FDE_READ);
-    });
 }
 
 void init_mdns_transport_discovery(void) {
+    ResolvedService::initAdbSecure();
     std::thread(init_mdns_transport_discovery_thread).detach();
 }
diff --git a/adb/client/transport_usb.cpp b/adb/client/transport_usb.cpp
new file mode 100644
index 0000000..777edde
--- /dev/null
+++ b/adb/client/transport_usb.cpp
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define TRACE_TAG TRANSPORT
+
+#include "sysdeps.h"
+
+#include "client/usb.h"
+
+#include <memory>
+
+#include "sysdeps.h"
+#include "transport.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "adb.h"
+
+#if ADB_HOST
+
+#if defined(__APPLE__)
+#define CHECK_PACKET_OVERFLOW 0
+#else
+#define CHECK_PACKET_OVERFLOW 1
+#endif
+
+// Call usb_read using a buffer having a multiple of usb_get_max_packet_size() bytes
+// to avoid overflow. See http://libusb.sourceforge.net/api-1.0/packetoverflow.html.
+static int UsbReadMessage(usb_handle* h, amessage* msg) {
+    D("UsbReadMessage");
+
+#if CHECK_PACKET_OVERFLOW
+    size_t usb_packet_size = usb_get_max_packet_size(h);
+    CHECK_GE(usb_packet_size, sizeof(*msg));
+    CHECK_LT(usb_packet_size, 4096ULL);
+
+    char buffer[4096];
+    int n = usb_read(h, buffer, usb_packet_size);
+    if (n != sizeof(*msg)) {
+        D("usb_read returned unexpected length %d (expected %zu)", n, sizeof(*msg));
+        return -1;
+    }
+    memcpy(msg, buffer, sizeof(*msg));
+    return n;
+#else
+    return usb_read(h, msg, sizeof(*msg));
+#endif
+}
+
+// Call usb_read using a buffer having a multiple of usb_get_max_packet_size() bytes
+// to avoid overflow. See http://libusb.sourceforge.net/api-1.0/packetoverflow.html.
+static int UsbReadPayload(usb_handle* h, apacket* p) {
+    D("UsbReadPayload(%d)", p->msg.data_length);
+
+    if (p->msg.data_length > MAX_PAYLOAD) {
+        return -1;
+    }
+
+#if CHECK_PACKET_OVERFLOW
+    size_t usb_packet_size = usb_get_max_packet_size(h);
+
+    // Round the data length up to the nearest packet size boundary.
+    // The device won't send a zero packet for packet size aligned payloads,
+    // so don't read any more packets than needed.
+    size_t len = p->msg.data_length;
+    size_t rem_size = len % usb_packet_size;
+    if (rem_size) {
+        len += usb_packet_size - rem_size;
+    }
+
+    p->payload.resize(len);
+    int rc = usb_read(h, &p->payload[0], p->payload.size());
+    if (rc != static_cast<int>(p->msg.data_length)) {
+        return -1;
+    }
+
+    p->payload.resize(rc);
+    return rc;
+#else
+    p->payload.resize(p->msg.data_length);
+    return usb_read(h, &p->payload[0], p->payload.size());
+#endif
+}
+
+static int remote_read(apacket* p, usb_handle* usb) {
+    int n = UsbReadMessage(usb, &p->msg);
+    if (n < 0) {
+        D("remote usb: read terminated (message)");
+        return -1;
+    }
+    if (static_cast<size_t>(n) != sizeof(p->msg)) {
+        D("remote usb: read received unexpected header length %d", n);
+        return -1;
+    }
+    if (p->msg.data_length) {
+        n = UsbReadPayload(usb, p);
+        if (n < 0) {
+            D("remote usb: terminated (data)");
+            return -1;
+        }
+        if (static_cast<uint32_t>(n) != p->msg.data_length) {
+            D("remote usb: read payload failed (need %u bytes, give %d bytes), skip it",
+              p->msg.data_length, n);
+            return -1;
+        }
+    }
+    return 0;
+}
+
+#else
+
+// On Android devices, we rely on the kernel to provide buffered read.
+// So we can recover automatically from EOVERFLOW.
+static int remote_read(apacket* p, usb_handle* usb) {
+    if (usb_read(usb, &p->msg, sizeof(amessage)) != sizeof(amessage)) {
+        PLOG(ERROR) << "remote usb: read terminated (message)";
+        return -1;
+    }
+
+    if (p->msg.data_length) {
+        if (p->msg.data_length > MAX_PAYLOAD) {
+            PLOG(ERROR) << "remote usb: read overflow (data length = " << p->msg.data_length << ")";
+            return -1;
+        }
+
+        p->payload.resize(p->msg.data_length);
+        if (usb_read(usb, &p->payload[0], p->payload.size()) !=
+            static_cast<int>(p->payload.size())) {
+            PLOG(ERROR) << "remote usb: terminated (data)";
+            return -1;
+        }
+    }
+
+    return 0;
+}
+#endif
+
+UsbConnection::~UsbConnection() {
+    usb_close(handle_);
+}
+
+bool UsbConnection::Read(apacket* packet) {
+    int rc = remote_read(packet, handle_);
+    return rc == 0;
+}
+
+bool UsbConnection::Write(apacket* packet) {
+    int size = packet->msg.data_length;
+
+    if (usb_write(handle_, &packet->msg, sizeof(packet->msg)) != sizeof(packet->msg)) {
+        PLOG(ERROR) << "remote usb: 1 - write terminated";
+        return false;
+    }
+
+    if (packet->msg.data_length != 0 && usb_write(handle_, packet->payload.data(), size) != size) {
+        PLOG(ERROR) << "remote usb: 2 - write terminated";
+        return false;
+    }
+
+    return true;
+}
+
+bool UsbConnection::DoTlsHandshake(RSA* key, std::string* auth_key) {
+    // TODO: support TLS for usb connections
+    LOG(FATAL) << "Not supported yet.";
+    return false;
+}
+
+void UsbConnection::Reset() {
+    usb_reset(handle_);
+    usb_kick(handle_);
+}
+
+void UsbConnection::Close() {
+    usb_kick(handle_);
+}
+
+void init_usb_transport(atransport* t, usb_handle* h) {
+    D("transport: usb");
+    auto connection = std::make_unique<UsbConnection>(h);
+    t->SetConnection(std::make_unique<BlockingConnectionAdapter>(std::move(connection)));
+    t->type = kTransportUsb;
+    t->SetUsbHandle(h);
+}
+
+int is_adb_interface(int usb_class, int usb_subclass, int usb_protocol) {
+    return (usb_class == ADB_CLASS && usb_subclass == ADB_SUBCLASS && usb_protocol == ADB_PROTOCOL);
+}
+
+bool should_use_libusb() {
+#if !ADB_HOST
+    return false;
+#else
+    static bool enable = getenv("ADB_LIBUSB") && strcmp(getenv("ADB_LIBUSB"), "1") == 0;
+    return enable;
+#endif
+}
diff --git a/adb/client/usb.h b/adb/client/usb.h
new file mode 100644
index 0000000..b371788
--- /dev/null
+++ b/adb/client/usb.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/types.h>
+
+#include "adb.h"
+#include "transport.h"
+
+// USB host/client interface.
+
+#define ADB_USB_INTERFACE(handle_ref_type)                       \
+    void usb_init();                                             \
+    void usb_cleanup();                                          \
+    int usb_write(handle_ref_type h, const void* data, int len); \
+    int usb_read(handle_ref_type h, void* data, int len);        \
+    int usb_close(handle_ref_type h);                            \
+    void usb_reset(handle_ref_type h);                           \
+    void usb_kick(handle_ref_type h);                            \
+    size_t usb_get_max_packet_size(handle_ref_type)
+
+// Linux and Darwin clients have native and libusb implementations.
+
+namespace libusb {
+struct usb_handle;
+ADB_USB_INTERFACE(libusb::usb_handle*);
+}  // namespace libusb
+
+namespace native {
+struct usb_handle;
+ADB_USB_INTERFACE(native::usb_handle*);
+}  // namespace native
+
+// Empty base that both implementations' opaque handles inherit from.
+struct usb_handle {};
+
+ADB_USB_INTERFACE(::usb_handle*);
+
+// USB device detection.
+int is_adb_interface(int usb_class, int usb_subclass, int usb_protocol);
+
+bool should_use_libusb();
+
+struct UsbConnection : public BlockingConnection {
+    explicit UsbConnection(usb_handle* handle) : handle_(handle) {}
+    ~UsbConnection();
+
+    bool Read(apacket* packet) override final;
+    bool Write(apacket* packet) override final;
+    bool DoTlsHandshake(RSA* key, std::string* auth_key) override final;
+
+    void Close() override final;
+    virtual void Reset() override final;
+
+    usb_handle* handle_;
+};
diff --git a/adb/client/usb_dispatch.cpp b/adb/client/usb_dispatch.cpp
index f55ae90..7b97117 100644
--- a/adb/client/usb_dispatch.cpp
+++ b/adb/client/usb_dispatch.cpp
@@ -15,7 +15,8 @@
  */
 
 #include <android-base/logging.h>
-#include "usb.h"
+
+#include "client/usb.h"
 
 void usb_init() {
     if (should_use_libusb()) {
diff --git a/adb/client/usb_libusb.cpp b/adb/client/usb_libusb.cpp
index 53f01a0..07cbc94 100644
--- a/adb/client/usb_libusb.cpp
+++ b/adb/client/usb_libusb.cpp
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-#include "usb.h"
-
 #include "sysdeps.h"
 
+#include "client/usb.h"
+
 #include <stdint.h>
 #include <stdlib.h>
 
@@ -40,7 +40,6 @@
 #include "adb.h"
 #include "adb_utils.h"
 #include "transport.h"
-#include "usb.h"
 
 using android::base::StringPrintf;
 
diff --git a/adb/client/usb_linux.cpp b/adb/client/usb_linux.cpp
index 81b8306..95b1817 100644
--- a/adb/client/usb_linux.cpp
+++ b/adb/client/usb_linux.cpp
@@ -18,6 +18,8 @@
 
 #include "sysdeps.h"
 
+#include "client/usb.h"
+
 #include <ctype.h>
 #include <dirent.h>
 #include <errno.h>
@@ -48,7 +50,6 @@
 
 #include "adb.h"
 #include "transport.h"
-#include "usb.h"
 
 using namespace std::chrono_literals;
 using namespace std::literals;
@@ -324,7 +325,7 @@
 
     h->urb_out_busy = true;
     while (true) {
-        auto now = std::chrono::system_clock::now();
+        auto now = std::chrono::steady_clock::now();
         if (h->cv.wait_until(lock, now + 5s) == std::cv_status::timeout || h->dead) {
             // TODO: call USBDEVFS_DISCARDURB?
             errno = ETIMEDOUT;
@@ -406,25 +407,44 @@
     }
 }
 
-int usb_write(usb_handle *h, const void *_data, int len)
-{
+static int usb_write_split(usb_handle* h, unsigned char* data, int len) {
+    for (int i = 0; i < len; i += 16384) {
+        int chunk_size = (i + 16384 > len) ? len - i : 16384;
+        int n = usb_bulk_write(h, data + i, chunk_size);
+        if (n != chunk_size) {
+            D("ERROR: n = %d, errno = %d (%s)", n, errno, strerror(errno));
+            return -1;
+        }
+    }
+
+    return len;
+}
+
+int usb_write(usb_handle* h, const void* _data, int len) {
     D("++ usb_write ++");
 
-    unsigned char *data = (unsigned char*) _data;
+    unsigned char* data = (unsigned char*)_data;
+
+    // The kernel will attempt to allocate a contiguous buffer for each write we submit.
+    // This might fail due to heap fragmentation, so attempt a contiguous write once, and if that
+    // fails, retry after having split the data into 16kB chunks to avoid allocation failure.
     int n = usb_bulk_write(h, data, len);
-    if (n != len) {
-        D("ERROR: n = %d, errno = %d (%s)", n, errno, strerror(errno));
+    if (n == -1 && errno == ENOMEM) {
+        n = usb_write_split(h, data, len);
+    }
+
+    if (n == -1) {
         return -1;
     }
 
     if (h->zero_mask && !(len & h->zero_mask)) {
         // If we need 0-markers and our transfer is an even multiple of the packet size,
         // then send a zero marker.
-        return usb_bulk_write(h, _data, 0) == 0 ? n : -1;
+        return usb_bulk_write(h, _data, 0) == 0 ? len : -1;
     }
 
     D("-- usb_write --");
-    return n;
+    return len;
 }
 
 int usb_read(usb_handle *h, void *_data, int len)
@@ -590,6 +610,7 @@
     while (true) {
         // TODO: Use inotify.
         find_usb_device("/dev/bus/usb", register_device);
+        adb_notify_device_scan_complete();
         kick_disconnected_devices();
         std::this_thread::sleep_for(1s);
     }
diff --git a/adb/client/usb_osx.cpp b/adb/client/usb_osx.cpp
index 5c0da47..a93fa3a 100644
--- a/adb/client/usb_osx.cpp
+++ b/adb/client/usb_osx.cpp
@@ -18,6 +18,8 @@
 
 #include "sysdeps.h"
 
+#include "client/usb.h"
+
 #include <CoreFoundation/CoreFoundation.h>
 
 #include <IOKit/IOKitLib.h>
@@ -461,6 +463,7 @@
             std::this_thread::sleep_for(100ms);
         }
 
+        adb_notify_device_scan_complete();
         initialized = true;
     }
 }
diff --git a/adb/client/usb_windows.cpp b/adb/client/usb_windows.cpp
index f23c3a5..e209230 100644
--- a/adb/client/usb_windows.cpp
+++ b/adb/client/usb_windows.cpp
@@ -18,6 +18,8 @@
 
 #include "sysdeps.h"
 
+#include "client/usb.h"
+
 // clang-format off
 #include <winsock2.h>  // winsock.h *must* be included before windows.h.
 #include <windows.h>
@@ -172,6 +174,7 @@
 
     while (true) {
         find_devices();
+        adb_notify_device_scan_complete();
         std::this_thread::sleep_for(1s);
     }
 }
diff --git a/adb/crypto/Android.bp b/adb/crypto/Android.bp
new file mode 100644
index 0000000..9d14b03
--- /dev/null
+++ b/adb/crypto/Android.bp
@@ -0,0 +1,80 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_defaults {
+    name: "libadb_crypto_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    srcs: [
+        "key.cpp",
+        "rsa_2048_key.cpp",
+        "x509_generator.cpp",
+    ],
+
+    target: {
+        windows: {
+            compile_multilib: "first",
+            enabled: true,
+        },
+    },
+
+    export_include_dirs: ["include"],
+
+    visibility: [
+        "//system/core/adb:__subpackages__",
+        "//bootable/recovery/minadbd:__subpackages__",
+    ],
+
+    host_supported: true,
+    recovery_available: true,
+
+    shared_libs: [
+        "libadb_protos",
+        "libbase",
+        "liblog",
+        "libcrypto",
+        "libcrypto_utils",
+    ],
+}
+
+cc_library {
+    name: "libadb_crypto",
+    defaults: ["libadb_crypto_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+        "test_com.android.adbd",
+    ],
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_crypto_static",
+    defaults: ["libadb_crypto_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+
+    static_libs: [
+        "libadb_protos_static",
+    ],
+}
diff --git a/adb/crypto/include/adb/crypto/key.h b/adb/crypto/include/adb/crypto/key.h
new file mode 100644
index 0000000..d9ce69e
--- /dev/null
+++ b/adb/crypto/include/adb/crypto/key.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+#include <openssl/evp.h>
+
+#include "key_type.pb.h"
+
+namespace adb {
+namespace crypto {
+
+// Class that represents a public/private key pair.
+class Key {
+  public:
+    explicit Key(bssl::UniquePtr<EVP_PKEY>&& pkey, adb::proto::KeyType type)
+        : pkey_(std::move(pkey)), key_type_(type) {}
+    Key(Key&&) = default;
+    Key& operator=(Key&&) = default;
+
+    EVP_PKEY* GetEvpPkey() const { return pkey_.get(); }
+    adb::proto::KeyType GetKeyType() const { return key_type_; }
+    static std::string ToPEMString(EVP_PKEY* pkey);
+
+  private:
+    bssl::UniquePtr<EVP_PKEY> pkey_;
+    adb::proto::KeyType key_type_;
+};  // Key
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/include/adb/crypto/rsa_2048_key.h b/adb/crypto/include/adb/crypto/rsa_2048_key.h
new file mode 100644
index 0000000..2983a84
--- /dev/null
+++ b/adb/crypto/include/adb/crypto/rsa_2048_key.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <optional>
+
+#include "adb/crypto/key.h"
+
+namespace adb {
+namespace crypto {
+
+// Create a new RSA2048 key pair.
+std::optional<Key> CreateRSA2048Key();
+
+// Generates the public key from the RSA private key.
+bool CalculatePublicKey(std::string* out, RSA* private_key);
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/include/adb/crypto/x509_generator.h b/adb/crypto/include/adb/crypto/x509_generator.h
new file mode 100644
index 0000000..a269243
--- /dev/null
+++ b/adb/crypto/include/adb/crypto/x509_generator.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <openssl/x509v3.h>
+
+namespace adb {
+namespace crypto {
+
+// Generate a X.509 certificate based on the key |pkey|.
+bssl::UniquePtr<X509> GenerateX509Certificate(EVP_PKEY* pkey);
+
+// Convert X509* to PEM string format
+std::string X509ToPEMString(X509* x509);
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/key.cpp b/adb/crypto/key.cpp
new file mode 100644
index 0000000..4d87006
--- /dev/null
+++ b/adb/crypto/key.cpp
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/crypto/key.h"
+
+#include <android-base/logging.h>
+#include <openssl/bn.h>
+#include <openssl/pem.h>
+#include <openssl/rsa.h>
+
+namespace adb {
+namespace crypto {
+
+// static
+std::string Key::ToPEMString(EVP_PKEY* pkey) {
+    bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
+    int rc = PEM_write_bio_PKCS8PrivateKey(bio.get(), pkey, nullptr, nullptr, 0, nullptr, nullptr);
+    if (rc != 1) {
+        LOG(ERROR) << "PEM_write_bio_PKCS8PrivateKey failed";
+        return "";
+    }
+
+    BUF_MEM* mem = nullptr;
+    BIO_get_mem_ptr(bio.get(), &mem);
+    if (!mem || !mem->data || !mem->length) {
+        LOG(ERROR) << "BIO_get_mem_ptr failed";
+        return "";
+    }
+
+    return std::string(mem->data, mem->length);
+}
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/rsa_2048_key.cpp b/adb/crypto/rsa_2048_key.cpp
new file mode 100644
index 0000000..7911af9
--- /dev/null
+++ b/adb/crypto/rsa_2048_key.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/crypto/rsa_2048_key.h"
+
+#include <android-base/logging.h>
+#include <crypto_utils/android_pubkey.h>
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+
+namespace adb {
+namespace crypto {
+
+namespace {
+std::string get_user_info() {
+    std::string hostname;
+    if (getenv("HOSTNAME")) hostname = getenv("HOSTNAME");
+#if !defined(_WIN32)
+    char buf[64];
+    if (hostname.empty() && gethostname(buf, sizeof(buf)) != -1) hostname = buf;
+#endif
+    if (hostname.empty()) hostname = "unknown";
+
+    std::string username;
+    if (getenv("LOGNAME")) username = getenv("LOGNAME");
+#if !defined(_WIN32)
+    if (username.empty() && getlogin()) username = getlogin();
+#endif
+    if (username.empty()) hostname = "unknown";
+
+    return " " + username + "@" + hostname;
+}
+
+}  // namespace
+
+bool CalculatePublicKey(std::string* out, RSA* private_key) {
+    uint8_t binary_key_data[ANDROID_PUBKEY_ENCODED_SIZE];
+    if (!android_pubkey_encode(private_key, binary_key_data, sizeof(binary_key_data))) {
+        LOG(ERROR) << "Failed to convert to public key";
+        return false;
+    }
+
+    size_t expected_length;
+    if (!EVP_EncodedLength(&expected_length, sizeof(binary_key_data))) {
+        LOG(ERROR) << "Public key too large to base64 encode";
+        return false;
+    }
+
+    out->resize(expected_length);
+    size_t actual_length = EVP_EncodeBlock(reinterpret_cast<uint8_t*>(out->data()), binary_key_data,
+                                           sizeof(binary_key_data));
+    out->resize(actual_length);
+    out->append(get_user_info());
+    return true;
+}
+
+std::optional<Key> CreateRSA2048Key() {
+    bssl::UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
+    bssl::UniquePtr<BIGNUM> exponent(BN_new());
+    bssl::UniquePtr<RSA> rsa(RSA_new());
+    if (!pkey || !exponent || !rsa) {
+        LOG(ERROR) << "Failed to allocate key";
+        return std::nullopt;
+    }
+
+    BN_set_word(exponent.get(), RSA_F4);
+    RSA_generate_key_ex(rsa.get(), 2048, exponent.get(), nullptr);
+    EVP_PKEY_set1_RSA(pkey.get(), rsa.get());
+
+    return std::optional<Key>{Key(std::move(pkey), adb::proto::KeyType::RSA_2048)};
+}
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/tests/Android.bp b/adb/crypto/tests/Android.bp
new file mode 100644
index 0000000..b32dcf7
--- /dev/null
+++ b/adb/crypto/tests/Android.bp
@@ -0,0 +1,41 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "adb_crypto_test",
+    srcs: [
+        "rsa_2048_key_test.cpp",
+        "x509_generator_test.cpp",
+    ],
+
+    compile_multilib: "first",
+
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libcrypto_utils",
+        "libprotobuf-cpp-lite",
+    ],
+
+    // Let's statically link them so we don't have to install it onto the
+    // system image for testing.
+    static_libs: [
+        "libadb_crypto_static",
+        "libadb_protos_static",
+    ],
+
+    test_suites: ["device-tests"],
+}
diff --git a/adb/crypto/tests/key_test.cpp b/adb/crypto/tests/key_test.cpp
new file mode 100644
index 0000000..1feb6e8
--- /dev/null
+++ b/adb/crypto/tests/key_test.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <resolv.h>
+
+#include <adb/crypto/rsa_2048_key.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <crypto_utils/android_pubkey.h>
+#include <openssl/err.h>
+#include <openssl/rsa.h>
+#include <openssl/sha.h>
+
+namespace adb {
+namespace crypto {
+
+TEST(RSA2048Key, Smoke) {
+    auto rsa_2048 = CreateRSA2048Key();
+    EXPECT_NE(rsa_2048, std::nullopt);
+    EXPECT_EQ(rsa_2048->GetKeyType(), adb::proto::KeyType::RSA_2048);
+    ASSERT_NE(rsa_2048->GetEvpPkey(), nullptr);
+
+    // The public key string format is expected to be: "<pub_key> <host_name>"
+    std::string pub_key_plus_name;
+    auto* rsa = EVP_PKEY_get0_RSA(rsa_2048->GetEvpPkey());
+    ASSERT_TRUE(CalculatePublicKey(&pub_key_plus_name, rsa));
+    std::vector<std::string> split = android::base::Split(std::string(pub_key_plus_name), " \t");
+    EXPECT_EQ(split.size(), 2);
+
+    LOG(INFO) << "pub_key=[" << pub_key_plus_name << "]";
+
+    // Try to sign something and decode it.
+    const char token[SHA_DIGEST_LENGTH] = "abcdefghij123456789";
+    std::vector<uint8_t> sig(RSA_size(rsa));
+    unsigned sig_len;
+    EXPECT_EQ(RSA_sign(NID_sha1, reinterpret_cast<const uint8_t*>(token), sizeof(token), sig.data(),
+                       &sig_len, rsa),
+              1);
+    sig.resize(sig_len);
+
+    {
+        uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
+        const std::string& pubkey = split[0];
+        ASSERT_EQ(b64_pton(pubkey.c_str(), keybuf, sizeof(keybuf)), ANDROID_PUBKEY_ENCODED_SIZE);
+        RSA* key = nullptr;
+        ASSERT_TRUE(android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key));
+        EXPECT_EQ(RSA_verify(NID_sha1, reinterpret_cast<const uint8_t*>(token), sizeof(token),
+                             sig.data(), sig.size(), key),
+                  1);
+        RSA_free(key);
+    }
+}
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/tests/rsa_2048_key_test.cpp b/adb/crypto/tests/rsa_2048_key_test.cpp
new file mode 100644
index 0000000..1d8880e
--- /dev/null
+++ b/adb/crypto/tests/rsa_2048_key_test.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <resolv.h>
+
+#include <adb/crypto/rsa_2048_key.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <crypto_utils/android_pubkey.h>
+#include <openssl/err.h>
+#include <openssl/rsa.h>
+#include <openssl/sha.h>
+
+namespace adb {
+namespace crypto {
+
+TEST(RSA2048Key, Smoke) {
+    auto rsa_2048 = CreateRSA2048Key();
+    EXPECT_NE(rsa_2048, std::nullopt);
+    EXPECT_EQ(rsa_2048->GetKeyType(), adb::proto::KeyType::RSA_2048);
+    ASSERT_NE(rsa_2048->GetEvpPkey(), nullptr);
+
+    // The public key string format is expected to be: "<pub_key> <host_name>"
+    std::string pub_key_plus_name;
+    auto* rsa = EVP_PKEY_get0_RSA(rsa_2048->GetEvpPkey());
+    ASSERT_TRUE(CalculatePublicKey(&pub_key_plus_name, rsa));
+    std::vector<std::string> split = android::base::Split(std::string(pub_key_plus_name), " \t");
+    EXPECT_EQ(split.size(), 2);
+
+    LOG(INFO) << "pub_key=[" << pub_key_plus_name << "]";
+
+    std::string pemString = Key::ToPEMString(rsa_2048->GetEvpPkey());
+    ASSERT_FALSE(pemString.empty());
+
+    // Try to sign something and decode it.
+    const char token[SHA_DIGEST_LENGTH] = "abcdefghij123456789";
+    std::vector<uint8_t> sig(RSA_size(rsa));
+    unsigned sig_len;
+    EXPECT_EQ(RSA_sign(NID_sha1, reinterpret_cast<const uint8_t*>(token), sizeof(token), sig.data(),
+                       &sig_len, rsa),
+              1);
+    sig.resize(sig_len);
+
+    {
+        uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
+        const std::string& pubkey = split[0];
+        ASSERT_EQ(b64_pton(pubkey.c_str(), keybuf, sizeof(keybuf)), ANDROID_PUBKEY_ENCODED_SIZE);
+        RSA* key = nullptr;
+        ASSERT_TRUE(android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key));
+        EXPECT_EQ(RSA_verify(NID_sha1, reinterpret_cast<const uint8_t*>(token), sizeof(token),
+                             sig.data(), sig.size(), key),
+                  1);
+        RSA_free(key);
+    }
+}
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/tests/x509_generator_test.cpp b/adb/crypto/tests/x509_generator_test.cpp
new file mode 100644
index 0000000..281776b
--- /dev/null
+++ b/adb/crypto/tests/x509_generator_test.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <adb/crypto/rsa_2048_key.h>
+#include <adb/crypto/x509_generator.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+
+namespace adb {
+namespace crypto {
+
+TEST(X509Generator, Smoke) {
+    auto rsa_2048 = CreateRSA2048Key();
+
+    std::string pub_key_plus_name;
+    auto* rsa = EVP_PKEY_get0_RSA(rsa_2048->GetEvpPkey());
+    ASSERT_TRUE(CalculatePublicKey(&pub_key_plus_name, rsa));
+    std::vector<std::string> split = android::base::Split(std::string(pub_key_plus_name), " \t");
+    EXPECT_EQ(split.size(), 2);
+
+    LOG(INFO) << "pub_key=[" << pub_key_plus_name << "]";
+    auto x509_cert = GenerateX509Certificate(rsa_2048->GetEvpPkey());
+    ASSERT_NE(x509_cert.get(), nullptr);
+
+    std::string x509_str = X509ToPEMString(x509_cert.get());
+    ASSERT_FALSE(x509_str.empty());
+}
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/crypto/x509_generator.cpp b/adb/crypto/x509_generator.cpp
new file mode 100644
index 0000000..43b8153
--- /dev/null
+++ b/adb/crypto/x509_generator.cpp
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/crypto/x509_generator.h"
+
+#include <vector>
+
+#include <android-base/logging.h>
+#include <crypto_utils/android_pubkey.h>
+#include <openssl/bn.h>
+#include <openssl/pem.h>
+#include <openssl/rsa.h>
+
+namespace adb {
+namespace crypto {
+
+namespace {
+
+const char kBasicConstraints[] = "critical,CA:TRUE";
+const char kKeyUsage[] = "critical,keyCertSign,cRLSign,digitalSignature";
+const char kSubjectKeyIdentifier[] = "hash";
+constexpr int kCertLifetimeSeconds = 10 * 365 * 24 * 60 * 60;
+
+bool add_ext(X509* cert, int nid, const char* value) {
+    size_t len = strlen(value) + 1;
+    std::vector<char> mutableValue(value, value + len);
+    X509V3_CTX context;
+
+    X509V3_set_ctx_nodb(&context);
+
+    X509V3_set_ctx(&context, cert, cert, nullptr, nullptr, 0);
+    X509_EXTENSION* ex = X509V3_EXT_nconf_nid(nullptr, &context, nid, mutableValue.data());
+    if (!ex) {
+        return false;
+    }
+
+    X509_add_ext(cert, ex, -1);
+    X509_EXTENSION_free(ex);
+    return true;
+}
+
+}  // namespace
+
+bssl::UniquePtr<X509> GenerateX509Certificate(EVP_PKEY* pkey) {
+    CHECK(pkey);
+    bssl::UniquePtr<X509> x509(X509_new());
+    if (!x509) {
+        LOG(ERROR) << "Unable to allocate x509 container";
+        return nullptr;
+    }
+    X509_set_version(x509.get(), 2);
+
+    ASN1_INTEGER_set(X509_get_serialNumber(x509.get()), 1);
+    X509_gmtime_adj(X509_get_notBefore(x509.get()), 0);
+    X509_gmtime_adj(X509_get_notAfter(x509.get()), kCertLifetimeSeconds);
+
+    if (!X509_set_pubkey(x509.get(), pkey)) {
+        LOG(ERROR) << "Unable to set x509 public key";
+        return nullptr;
+    }
+
+    X509_NAME* name = X509_get_subject_name(x509.get());
+    if (!name) {
+        LOG(ERROR) << "Unable to get x509 subject name";
+        return nullptr;
+    }
+    X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC,
+                               reinterpret_cast<const unsigned char*>("US"), -1, -1, 0);
+    X509_NAME_add_entry_by_txt(name, "O", MBSTRING_ASC,
+                               reinterpret_cast<const unsigned char*>("Android"), -1, -1, 0);
+    X509_NAME_add_entry_by_txt(name, "CN", MBSTRING_ASC,
+                               reinterpret_cast<const unsigned char*>("Adb"), -1, -1, 0);
+    if (!X509_set_issuer_name(x509.get(), name)) {
+        LOG(ERROR) << "Unable to set x509 issuer name";
+        return nullptr;
+    }
+
+    add_ext(x509.get(), NID_basic_constraints, kBasicConstraints);
+    add_ext(x509.get(), NID_key_usage, kKeyUsage);
+    add_ext(x509.get(), NID_subject_key_identifier, kSubjectKeyIdentifier);
+
+    int bytes = X509_sign(x509.get(), pkey, EVP_sha256());
+    if (bytes <= 0) {
+        LOG(ERROR) << "Unable to sign x509 certificate";
+        return nullptr;
+    }
+
+    return x509;
+}
+
+std::string X509ToPEMString(X509* x509) {
+    bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
+    int rc = PEM_write_bio_X509(bio.get(), x509);
+    if (rc != 1) {
+        LOG(ERROR) << "PEM_write_bio_X509 failed";
+        return "";
+    }
+
+    BUF_MEM* mem = nullptr;
+    BIO_get_mem_ptr(bio.get(), &mem);
+    if (!mem || !mem->data || !mem->length) {
+        LOG(ERROR) << "BIO_get_mem_ptr failed";
+        return "";
+    }
+
+    return std::string(mem->data, mem->length);
+}
+
+}  // namespace crypto
+}  // namespace adb
diff --git a/adb/daemon/abb.cpp b/adb/daemon/abb.cpp
index eeac41a..17c25e8 100644
--- a/adb/daemon/abb.cpp
+++ b/adb/daemon/abb.cpp
@@ -17,22 +17,24 @@
 #include <sys/wait.h>
 
 #include <android-base/cmsg.h>
+#include <android-base/strings.h>
 #include <cmd.h>
 
 #include "adb.h"
 #include "adb_io.h"
 #include "adb_utils.h"
 #include "shell_service.h"
+#include "sysdeps.h"
 
 namespace {
 
 class AdbFdTextOutput : public android::TextOutput {
   public:
-    explicit AdbFdTextOutput(int fd) : mFD(fd) {}
+    explicit AdbFdTextOutput(borrowed_fd fd) : fd_(fd) {}
 
   private:
     android::status_t print(const char* txt, size_t len) override {
-        return WriteFdExactly(mFD, txt, len) ? android::OK : -errno;
+        return WriteFdExactly(fd_, txt, len) ? android::OK : -errno;
     }
     void moveIndent(int delta) override { /*not implemented*/
     }
@@ -43,7 +45,7 @@
     }
 
   private:
-    int mFD;
+    borrowed_fd fd_;
 };
 
 std::vector<std::string_view> parseCmdArgs(std::string_view args) {
@@ -67,10 +69,16 @@
 
 }  // namespace
 
-static int execCmd(std::string_view args, int in, int out, int err) {
+static int execCmd(std::string_view args, borrowed_fd in, borrowed_fd out, borrowed_fd err) {
+    int max_buf = LINUX_MAX_SOCKET_SIZE;
+    adb_setsockopt(in, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
+    adb_setsockopt(out, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
+    adb_setsockopt(err, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
+
     AdbFdTextOutput oin(out);
     AdbFdTextOutput oerr(err);
-    return cmdMain(parseCmdArgs(args), oin, oerr, in, out, err, RunMode::kLibrary);
+    return cmdMain(parseCmdArgs(args), oin, oerr, in.get(), out.get(), err.get(),
+                   RunMode::kLibrary);
 }
 
 int main(int argc, char* const argv[]) {
@@ -87,15 +95,17 @@
 
         std::string_view name = data;
         auto protocol = SubprocessProtocol::kShell;
-        if (ConsumePrefix(&name, "abb:")) {
+        if (android::base::ConsumePrefix(&name, "abb:")) {
             protocol = SubprocessProtocol::kShell;
-        } else if (ConsumePrefix(&name, "abb_exec:")) {
+        } else if (android::base::ConsumePrefix(&name, "abb_exec:")) {
             protocol = SubprocessProtocol::kNone;
         } else {
             LOG(FATAL) << "Unknown command prefix for abb: " << data;
         }
 
         unique_fd result = StartCommandInProcess(std::string(name), &execCmd, protocol);
+        int max_buf = LINUX_MAX_SOCKET_SIZE;
+        adb_setsockopt(result, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
         if (android::base::SendFileDescriptors(fd, "", 1, result.get()) != 1) {
             PLOG(ERROR) << "Failed to send an inprocess fd for command: " << data;
             break;
diff --git a/adb/daemon/abb_service.cpp b/adb/daemon/abb_service.cpp
index a435279..e1df4a5 100644
--- a/adb/daemon/abb_service.cpp
+++ b/adb/daemon/abb_service.cpp
@@ -53,14 +53,13 @@
             return error_fd;
         }
 
-        if (!SendProtocolString(socket_fd_, std::string(command))) {
+        if (!SendProtocolString(socket_fd_, command)) {
             PLOG(ERROR) << "failed to send command to abb";
             socket_fd_.reset();
             continue;
         }
 
         unique_fd fd;
-        std::string error;
         char buf;
         if (android::base::ReceiveFileDescriptors(socket_fd_, &buf, 1, &fd) != 1) {
             PLOG(ERROR) << "failed to receive FD from abb";
diff --git a/adb/daemon/adb_wifi.cpp b/adb/daemon/adb_wifi.cpp
new file mode 100644
index 0000000..2f9e9b4
--- /dev/null
+++ b/adb/daemon/adb_wifi.cpp
@@ -0,0 +1,229 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !ADB_HOST
+
+#define TRACE_TAG ADB_WIRELESS
+
+#include "adb_wifi.h"
+
+#include <unistd.h>
+#include <optional>
+
+#include <adbd_auth.h>
+#include <android-base/properties.h>
+
+#include "adb.h"
+#include "daemon/mdns.h"
+#include "sysdeps.h"
+#include "transport.h"
+
+using namespace android::base;
+
+namespace {
+
+static AdbdAuthContext* auth_ctx;
+
+static void adb_disconnected(void* unused, atransport* t);
+static struct adisconnect adb_disconnect = {adb_disconnected, nullptr};
+
+static void adb_disconnected(void* unused, atransport* t) {
+    LOG(INFO) << "ADB wifi device disconnected";
+    CHECK(t->auth_id.has_value());
+    adbd_auth_tls_device_disconnected(auth_ctx, kAdbTransportTypeWifi, t->auth_id.value());
+}
+
+// TODO(b/31559095): need bionic host so that we can use 'prop_info' returned
+// from WaitForProperty
+#if defined(__ANDROID__)
+
+class TlsServer {
+  public:
+    explicit TlsServer(int port);
+    virtual ~TlsServer();
+    bool Start();
+    uint16_t port() { return port_; };
+
+  private:
+    void OnFdEvent(int fd, unsigned ev);
+    static void StaticOnFdEvent(int fd, unsigned ev, void* opaque);
+
+    fdevent* fd_event_ = nullptr;
+    uint16_t port_;
+};  // TlsServer
+
+TlsServer::TlsServer(int port) : port_(port) {}
+
+TlsServer::~TlsServer() {
+    fdevent* fde = fd_event_;
+    fdevent_run_on_main_thread([fde]() {
+        if (fde != nullptr) {
+            fdevent_destroy(fde);
+        }
+    });
+}
+
+bool TlsServer::Start() {
+    std::condition_variable cv;
+    std::mutex mutex;
+    std::optional<bool> success;
+    auto callback = [&](bool result) {
+        {
+            std::lock_guard<std::mutex> lock(mutex);
+            success = result;
+        }
+        cv.notify_one();
+    };
+
+    std::string err;
+    unique_fd fd(network_inaddr_any_server(port_, SOCK_STREAM, &err));
+    if (fd.get() == -1) {
+        LOG(ERROR) << "Failed to start TLS server [" << err << "]";
+        return false;
+    }
+    close_on_exec(fd.get());
+    int port = socket_get_local_port(fd.get());
+    if (port <= 0 || port > 65535) {
+        LOG(ERROR) << "Invalid port for tls server";
+        return false;
+    }
+    port_ = static_cast<uint16_t>(port);
+    LOG(INFO) << "adbwifi started on port " << port_;
+
+    std::unique_lock<std::mutex> lock(mutex);
+    fdevent_run_on_main_thread([&]() {
+        fd_event_ = fdevent_create(fd.release(), &TlsServer::StaticOnFdEvent, this);
+        if (fd_event_ == nullptr) {
+            LOG(ERROR) << "Failed to create fd event for TlsServer.";
+            callback(false);
+            return;
+        }
+        callback(true);
+    });
+
+    cv.wait(lock, [&]() { return success.has_value(); });
+    if (!*success) {
+        LOG(INFO) << "TlsServer fdevent_create failed";
+        return false;
+    }
+    fdevent_set(fd_event_, FDE_READ);
+    LOG(INFO) << "TlsServer running on port " << port_;
+
+    return *success;
+}
+
+// static
+void TlsServer::StaticOnFdEvent(int fd, unsigned ev, void* opaque) {
+    auto server = reinterpret_cast<TlsServer*>(opaque);
+    server->OnFdEvent(fd, ev);
+}
+
+void TlsServer::OnFdEvent(int fd, unsigned ev) {
+    if ((ev & FDE_READ) == 0 || fd != fd_event_->fd.get()) {
+        LOG(INFO) << __func__ << ": No read [ev=" << ev << " fd=" << fd << "]";
+        return;
+    }
+
+    unique_fd new_fd(adb_socket_accept(fd, nullptr, nullptr));
+    if (new_fd >= 0) {
+        LOG(INFO) << "New TLS connection [fd=" << new_fd.get() << "]";
+        close_on_exec(new_fd.get());
+        disable_tcp_nagle(new_fd.get());
+        std::string serial = android::base::StringPrintf("host-%d", new_fd.get());
+        register_socket_transport(
+                std::move(new_fd), std::move(serial), port_, 1,
+                [](atransport*) { return ReconnectResult::Abort; }, true);
+    }
+}
+
+TlsServer* sTlsServer = nullptr;
+const char kWifiPortProp[] = "service.adb.tls.port";
+
+const char kWifiEnabledProp[] = "persist.adb.tls_server.enable";
+
+static void enable_wifi_debugging() {
+    start_mdnsd();
+
+    if (sTlsServer != nullptr) {
+        delete sTlsServer;
+    }
+    sTlsServer = new TlsServer(0);
+    if (!sTlsServer->Start()) {
+        LOG(ERROR) << "Failed to start TlsServer";
+        delete sTlsServer;
+        sTlsServer = nullptr;
+        return;
+    }
+
+    // Start mdns connect service for discovery
+    register_adb_secure_connect_service(sTlsServer->port());
+    LOG(INFO) << "adb wifi started on port " << sTlsServer->port();
+    SetProperty(kWifiPortProp, std::to_string(sTlsServer->port()));
+}
+
+static void disable_wifi_debugging() {
+    if (sTlsServer != nullptr) {
+        delete sTlsServer;
+        sTlsServer = nullptr;
+    }
+    if (is_adb_secure_connect_service_registered()) {
+        unregister_adb_secure_connect_service();
+    }
+    kick_all_tcp_tls_transports();
+    LOG(INFO) << "adb wifi stopped";
+    SetProperty(kWifiPortProp, "");
+}
+
+// Watches for the #kWifiEnabledProp property to toggle the TlsServer
+static void start_wifi_enabled_observer() {
+    std::thread([]() {
+        bool wifi_enabled = false;
+        while (true) {
+            std::string toggled_val = wifi_enabled ? "0" : "1";
+            LOG(INFO) << "Waiting for " << kWifiEnabledProp << "=" << toggled_val;
+            if (WaitForProperty(kWifiEnabledProp, toggled_val)) {
+                wifi_enabled = !wifi_enabled;
+                LOG(INFO) << kWifiEnabledProp << " changed to " << toggled_val;
+                if (wifi_enabled) {
+                    enable_wifi_debugging();
+                } else {
+                    disable_wifi_debugging();
+                }
+            }
+        }
+    }).detach();
+}
+#endif  //__ANDROID__
+
+}  // namespace
+
+void adbd_wifi_init(AdbdAuthContext* ctx) {
+    auth_ctx = ctx;
+#if defined(__ANDROID__)
+    start_wifi_enabled_observer();
+#endif  //__ANDROID__
+}
+
+void adbd_wifi_secure_connect(atransport* t) {
+    t->AddDisconnect(&adb_disconnect);
+    handle_online(t);
+    send_connect(t);
+    LOG(INFO) << __func__ << ": connected " << t->serial;
+    t->auth_id = adbd_auth_tls_device_connected(auth_ctx, kAdbTransportTypeWifi, t->auth_key.data(),
+                                                t->auth_key.size());
+}
+
+#endif /* !HOST */
diff --git a/adb/daemon/auth.cpp b/adb/daemon/auth.cpp
index a18afa4..1a1e4ad 100644
--- a/adb/daemon/auth.cpp
+++ b/adb/daemon/auth.cpp
@@ -16,107 +16,177 @@
 
 #define TRACE_TAG AUTH
 
-#include "adb.h"
-#include "adb_auth.h"
-#include "adb_io.h"
-#include "fdevent.h"
 #include "sysdeps.h"
-#include "transport.h"
 
 #include <resolv.h>
 #include <stdio.h>
 #include <string.h>
-#include <iomanip>
 
 #include <algorithm>
+#include <chrono>
+#include <iomanip>
+#include <map>
 #include <memory>
+#include <thread>
 
+#include <adb/crypto/rsa_2048_key.h>
+#include <adb/tls/adb_ca_list.h>
+#include <adbd_auth.h>
 #include <android-base/file.h>
+#include <android-base/no_destructor.h>
 #include <android-base/strings.h>
 #include <crypto_utils/android_pubkey.h>
 #include <openssl/obj_mac.h>
 #include <openssl/rsa.h>
 #include <openssl/sha.h>
+#include <openssl/ssl.h>
 
-static fdevent* listener_fde = nullptr;
-static fdevent* framework_fde = nullptr;
-static auto& framework_mutex = *new std::mutex();
-static int framework_fd GUARDED_BY(framework_mutex) = -1;
-static auto& connected_keys GUARDED_BY(framework_mutex) = *new std::vector<std::string>;
+#include "adb.h"
+#include "adb_auth.h"
+#include "adb_io.h"
+#include "adb_wifi.h"
+#include "fdevent/fdevent.h"
+#include "transport.h"
+#include "types.h"
+
+using namespace adb::crypto;
+using namespace adb::tls;
+using namespace std::chrono_literals;
+
+static AdbdAuthContext* auth_ctx;
+
+static RSA* rsa_pkey = nullptr;
 
 static void adb_disconnected(void* unused, atransport* t);
 static struct adisconnect adb_disconnect = {adb_disconnected, nullptr};
-static atransport* adb_transport;
-static bool needs_retry = false;
+
+static android::base::NoDestructor<std::map<uint32_t, weak_ptr<atransport>>> transports;
+static uint32_t transport_auth_id = 0;
 
 bool auth_required = true;
 
-bool adbd_auth_verify(const char* token, size_t token_size, const std::string& sig,
-                      std::string* auth_key) {
-    static constexpr const char* key_paths[] = { "/adb_keys", "/data/misc/adb/adb_keys", nullptr };
-
-    for (const auto& path : key_paths) {
-        if (access(path, R_OK) == 0) {
-            LOG(INFO) << "Loading keys from " << path;
-            std::string content;
-            if (!android::base::ReadFileToString(path, &content)) {
-                PLOG(ERROR) << "Couldn't read " << path;
-                continue;
-            }
-
-            for (const auto& line : android::base::Split(content, "\n")) {
-                if (line.empty()) continue;
-                *auth_key = line;
-                // TODO: do we really have to support both ' ' and '\t'?
-                char* sep = strpbrk(const_cast<char*>(line.c_str()), " \t");
-                if (sep) *sep = '\0';
-
-                // b64_pton requires one additional byte in the target buffer for
-                // decoding to succeed. See http://b/28035006 for details.
-                uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
-                if (b64_pton(line.c_str(), keybuf, sizeof(keybuf)) != ANDROID_PUBKEY_ENCODED_SIZE) {
-                    LOG(ERROR) << "Invalid base64 key " << line.c_str() << " in " << path;
-                    continue;
-                }
-
-                RSA* key = nullptr;
-                if (!android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key)) {
-                    LOG(ERROR) << "Failed to parse key " << line.c_str() << " in " << path;
-                    continue;
-                }
-
-                bool verified =
-                    (RSA_verify(NID_sha1, reinterpret_cast<const uint8_t*>(token), token_size,
-                                reinterpret_cast<const uint8_t*>(sig.c_str()), sig.size(),
-                                key) == 1);
-                RSA_free(key);
-                if (verified) return true;
-            }
-        }
-    }
-    auth_key->clear();
-    return false;
+static void* transport_to_callback_arg(atransport* transport) {
+    uint32_t id = transport_auth_id++;
+    (*transports)[id] = transport->weak();
+    return reinterpret_cast<void*>(id);
 }
 
-static bool adbd_send_key_message_locked(std::string_view msg_type, std::string_view key)
-        REQUIRES(framework_mutex) {
-    if (framework_fd < 0) {
-        LOG(ERROR) << "Client not connected to send msg_type " << msg_type;
-        return false;
-    }
-    std::string msg = std::string(msg_type) + std::string(key);
-    int msg_len = msg.length();
-    if (msg_len >= static_cast<int>(MAX_FRAMEWORK_PAYLOAD)) {
-        LOG(ERROR) << "Key too long (" << msg_len << ")";
-        return false;
+static atransport* transport_from_callback_arg(void* id) {
+    uint64_t id_u64 = reinterpret_cast<uint64_t>(id);
+    if (id_u64 > std::numeric_limits<uint32_t>::max()) {
+        LOG(FATAL) << "transport_from_callback_arg called on out of range value: " << id_u64;
     }
 
-    LOG(DEBUG) << "Sending '" << msg << "'";
-    if (!WriteFdExactly(framework_fd, msg.c_str(), msg_len)) {
-        PLOG(ERROR) << "Failed to write " << msg_type;
-        return false;
+    uint32_t id_u32 = static_cast<uint32_t>(id_u64);
+    auto it = transports->find(id_u32);
+    if (it == transports->end()) {
+        LOG(ERROR) << "transport_from_callback_arg failed to find transport for id " << id_u32;
+        return nullptr;
     }
-    return true;
+
+    atransport* t = it->second.get();
+    if (!t) {
+        LOG(WARNING) << "transport_from_callback_arg found already destructed transport";
+        return nullptr;
+    }
+
+    transports->erase(it);
+    return t;
+}
+
+static void IteratePublicKeys(std::function<bool(std::string_view public_key)> f) {
+    adbd_auth_get_public_keys(
+            auth_ctx,
+            [](void* opaque, const char* public_key, size_t len) {
+                return (*static_cast<decltype(f)*>(opaque))(std::string_view(public_key, len));
+            },
+            &f);
+}
+
+bssl::UniquePtr<STACK_OF(X509_NAME)> adbd_tls_client_ca_list() {
+    if (!auth_required) {
+        return nullptr;
+    }
+
+    bssl::UniquePtr<STACK_OF(X509_NAME)> ca_list(sk_X509_NAME_new_null());
+
+    IteratePublicKeys([&](std::string_view public_key) {
+        // TODO: do we really have to support both ' ' and '\t'?
+        std::vector<std::string> split = android::base::Split(std::string(public_key), " \t");
+        uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
+        const std::string& pubkey = split[0];
+        if (b64_pton(pubkey.c_str(), keybuf, sizeof(keybuf)) != ANDROID_PUBKEY_ENCODED_SIZE) {
+            LOG(ERROR) << "Invalid base64 key " << pubkey;
+            return true;
+        }
+
+        RSA* key = nullptr;
+        if (!android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key)) {
+            LOG(ERROR) << "Failed to parse key " << pubkey;
+            return true;
+        }
+        bssl::UniquePtr<RSA> rsa_key(key);
+
+        unsigned char* dkey = nullptr;
+        int len = i2d_RSA_PUBKEY(rsa_key.get(), &dkey);
+        if (len <= 0 || dkey == nullptr) {
+            LOG(ERROR) << "Failed to encode RSA public key";
+            return true;
+        }
+
+        uint8_t digest[SHA256_DIGEST_LENGTH];
+        // Put the encoded key in the commonName attribute of the issuer name.
+        // Note that the commonName has a max length of 64 bytes, which is less
+        // than the SHA256_DIGEST_LENGTH.
+        SHA256(dkey, len, digest);
+        OPENSSL_free(dkey);
+
+        auto digest_str = SHA256BitsToHexString(
+                std::string_view(reinterpret_cast<const char*>(&digest[0]), sizeof(digest)));
+        LOG(INFO) << "fingerprint=[" << digest_str << "]";
+        auto issuer = CreateCAIssuerFromEncodedKey(digest_str);
+        CHECK(bssl::PushToStack(ca_list.get(), std::move(issuer)));
+        return true;
+    });
+
+    return ca_list;
+}
+
+bool adbd_auth_verify(const char* token, size_t token_size, const std::string& sig,
+                      std::string* auth_key) {
+    bool authorized = false;
+    auth_key->clear();
+
+    IteratePublicKeys([&](std::string_view public_key) {
+        // TODO: do we really have to support both ' ' and '\t'?
+        std::vector<std::string> split = android::base::Split(std::string(public_key), " \t");
+        uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
+        const std::string& pubkey = split[0];
+        if (b64_pton(pubkey.c_str(), keybuf, sizeof(keybuf)) != ANDROID_PUBKEY_ENCODED_SIZE) {
+            LOG(ERROR) << "Invalid base64 key " << pubkey;
+            return true;
+        }
+
+        RSA* key = nullptr;
+        if (!android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key)) {
+            LOG(ERROR) << "Failed to parse key " << pubkey;
+            return true;
+        }
+
+        bool verified =
+                (RSA_verify(NID_sha1, reinterpret_cast<const uint8_t*>(token), token_size,
+                            reinterpret_cast<const uint8_t*>(sig.c_str()), sig.size(), key) == 1);
+        RSA_free(key);
+        if (verified) {
+            *auth_key = public_key;
+            authorized = true;
+            return false;
+        }
+
+        return true;
+    });
+
+    return authorized;
 }
 
 static bool adbd_auth_generate_token(void* token, size_t token_size) {
@@ -127,113 +197,6 @@
     return okay;
 }
 
-static void adb_disconnected(void* unused, atransport* t) {
-    LOG(INFO) << "ADB disconnect";
-    adb_transport = nullptr;
-    needs_retry = false;
-    {
-        std::lock_guard<std::mutex> lock(framework_mutex);
-        if (framework_fd >= 0) {
-            adbd_send_key_message_locked("DC", t->auth_key);
-        }
-        connected_keys.erase(std::remove(connected_keys.begin(), connected_keys.end(), t->auth_key),
-                             connected_keys.end());
-    }
-}
-
-static void framework_disconnected() {
-    LOG(INFO) << "Framework disconnect";
-    if (framework_fde) {
-        fdevent_destroy(framework_fde);
-        {
-            std::lock_guard<std::mutex> lock(framework_mutex);
-            framework_fd = -1;
-        }
-    }
-}
-
-static void adbd_auth_event(int fd, unsigned events, void*) {
-    if (events & FDE_READ) {
-        char response[2];
-        int ret = unix_read(fd, response, sizeof(response));
-        if (ret <= 0) {
-            framework_disconnected();
-        } else if (ret == 2 && response[0] == 'O' && response[1] == 'K') {
-            if (adb_transport) {
-                adbd_auth_verified(adb_transport);
-            }
-        }
-    }
-}
-
-void adbd_auth_confirm_key(atransport* t) {
-    if (!adb_transport) {
-        adb_transport = t;
-        t->AddDisconnect(&adb_disconnect);
-    }
-
-    {
-        std::lock_guard<std::mutex> lock(framework_mutex);
-        if (framework_fd < 0) {
-            LOG(ERROR) << "Client not connected";
-            needs_retry = true;
-            return;
-        }
-
-        adbd_send_key_message_locked("PK", t->auth_key);
-    }
-}
-
-static void adbd_auth_listener(int fd, unsigned events, void* data) {
-    int s = adb_socket_accept(fd, nullptr, nullptr);
-    if (s < 0) {
-        PLOG(ERROR) << "Failed to accept";
-        return;
-    }
-
-    {
-        std::lock_guard<std::mutex> lock(framework_mutex);
-        if (framework_fd >= 0) {
-            LOG(WARNING) << "adb received framework auth socket connection again";
-            framework_disconnected();
-        }
-
-        framework_fd = s;
-        framework_fde = fdevent_create(framework_fd, adbd_auth_event, nullptr);
-        fdevent_add(framework_fde, FDE_READ);
-
-        if (needs_retry) {
-            needs_retry = false;
-            send_auth_request(adb_transport);
-        }
-
-        // if a client connected before the framework was available notify the framework of the
-        // connected key now.
-        if (!connected_keys.empty()) {
-            for (const auto& key : connected_keys) {
-                adbd_send_key_message_locked("CK", key);
-            }
-        }
-    }
-}
-
-void adbd_notify_framework_connected_key(atransport* t) {
-    if (!adb_transport) {
-        adb_transport = t;
-        t->AddDisconnect(&adb_disconnect);
-    }
-    {
-        std::lock_guard<std::mutex> lock(framework_mutex);
-        if (std::find(connected_keys.begin(), connected_keys.end(), t->auth_key) ==
-            connected_keys.end()) {
-            connected_keys.push_back(t->auth_key);
-        }
-        if (framework_fd >= 0) {
-            adbd_send_key_message_locked("CK", t->auth_key);
-        }
-    }
-}
-
 void adbd_cloexec_auth_socket() {
     int fd = android_get_control_socket("adbd");
     if (fd == -1) {
@@ -243,20 +206,51 @@
     fcntl(fd, F_SETFD, FD_CLOEXEC);
 }
 
+static void adbd_auth_key_authorized(void* arg, uint64_t id) {
+    LOG(INFO) << "adb client " << id << " authorized";
+    fdevent_run_on_main_thread([=]() {
+        auto* transport = transport_from_callback_arg(arg);
+        if (!transport) {
+            LOG(ERROR) << "authorization received for deleted transport (" << id << "), ignoring";
+            return;
+        }
+
+        if (transport->auth_id.has_value()) {
+            if (transport->auth_id.value() != id) {
+                LOG(ERROR)
+                        << "authorization received, but auth id doesn't match, ignoring (expected "
+                        << transport->auth_id.value() << ", got " << id << ")";
+                return;
+            }
+        } else {
+            // Older versions (i.e. dogfood/beta builds) of libadbd_auth didn't pass the initial
+            // auth id to us, so we'll just have to trust it until R ships and we can retcon this.
+            transport->auth_id = id;
+        }
+
+        adbd_auth_verified(transport);
+    });
+}
+
+static void adbd_key_removed(const char* public_key, size_t len) {
+    // The framework removed the key from its keystore. We need to disconnect all
+    // devices using that key. Search by t->auth_key
+    std::string_view auth_key(public_key, len);
+    kick_all_transports_by_auth_key(auth_key);
+}
+
 void adbd_auth_init(void) {
-    int fd = android_get_control_socket("adbd");
-    if (fd == -1) {
-        PLOG(ERROR) << "Failed to get adbd socket";
-        return;
-    }
-
-    if (listen(fd, 4) == -1) {
-        PLOG(ERROR) << "Failed to listen on '" << fd << "'";
-        return;
-    }
-
-    listener_fde = fdevent_create(fd, adbd_auth_listener, nullptr);
-    fdevent_add(listener_fde, FDE_READ);
+    AdbdAuthCallbacksV1 cb;
+    cb.version = 1;
+    cb.key_authorized = adbd_auth_key_authorized;
+    cb.key_removed = adbd_key_removed;
+    auth_ctx = adbd_auth_new(&cb);
+    adbd_wifi_init(auth_ctx);
+    std::thread([]() {
+        adb_thread_setname("adbd auth");
+        adbd_auth_run(auth_ctx);
+        LOG(FATAL) << "auth thread terminated";
+    }).detach();
 }
 
 void send_auth_request(atransport* t) {
@@ -280,3 +274,109 @@
     handle_online(t);
     send_connect(t);
 }
+
+static void adb_disconnected(void* unused, atransport* t) {
+    LOG(INFO) << "ADB disconnect";
+    CHECK(t->auth_id.has_value());
+    adbd_auth_notify_disconnect(auth_ctx, t->auth_id.value());
+}
+
+void adbd_auth_confirm_key(atransport* t) {
+    LOG(INFO) << "prompting user to authorize key";
+    t->AddDisconnect(&adb_disconnect);
+    if (adbd_auth_prompt_user_with_id) {
+        t->auth_id = adbd_auth_prompt_user_with_id(auth_ctx, t->auth_key.data(), t->auth_key.size(),
+                                                   transport_to_callback_arg(t));
+    } else {
+        adbd_auth_prompt_user(auth_ctx, t->auth_key.data(), t->auth_key.size(),
+                              transport_to_callback_arg(t));
+    }
+}
+
+void adbd_notify_framework_connected_key(atransport* t) {
+    t->auth_id = adbd_auth_notify_auth(auth_ctx, t->auth_key.data(), t->auth_key.size());
+}
+
+int adbd_tls_verify_cert(X509_STORE_CTX* ctx, std::string* auth_key) {
+    if (!auth_required) {
+        // Any key will do.
+        LOG(INFO) << __func__ << ": auth not required";
+        return 1;
+    }
+
+    bool authorized = false;
+    X509* cert = X509_STORE_CTX_get0_cert(ctx);
+    if (cert == nullptr) {
+        LOG(INFO) << "got null x509 certificate";
+        return 0;
+    }
+    bssl::UniquePtr<EVP_PKEY> evp_pkey(X509_get_pubkey(cert));
+    if (evp_pkey == nullptr) {
+        LOG(INFO) << "got null evp_pkey from x509 certificate";
+        return 0;
+    }
+
+    IteratePublicKeys([&](std::string_view public_key) {
+        // TODO: do we really have to support both ' ' and '\t'?
+        std::vector<std::string> split = android::base::Split(std::string(public_key), " \t");
+        uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
+        const std::string& pubkey = split[0];
+        if (b64_pton(pubkey.c_str(), keybuf, sizeof(keybuf)) != ANDROID_PUBKEY_ENCODED_SIZE) {
+            LOG(ERROR) << "Invalid base64 key " << pubkey;
+            return true;
+        }
+
+        RSA* key = nullptr;
+        if (!android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key)) {
+            LOG(ERROR) << "Failed to parse key " << pubkey;
+            return true;
+        }
+
+        bool verified = false;
+        bssl::UniquePtr<EVP_PKEY> known_evp(EVP_PKEY_new());
+        EVP_PKEY_set1_RSA(known_evp.get(), key);
+        if (EVP_PKEY_cmp(known_evp.get(), evp_pkey.get())) {
+            LOG(INFO) << "Matched auth_key=" << public_key;
+            verified = true;
+        } else {
+            LOG(INFO) << "auth_key doesn't match [" << public_key << "]";
+        }
+        RSA_free(key);
+        if (verified) {
+            *auth_key = public_key;
+            authorized = true;
+            return false;
+        }
+
+        return true;
+    });
+
+    return authorized ? 1 : 0;
+}
+
+void adbd_auth_tls_handshake(atransport* t) {
+    if (rsa_pkey == nullptr) {
+        // Generate a random RSA key to feed into the X509 certificate
+        auto rsa_2048 = CreateRSA2048Key();
+        CHECK(rsa_2048.has_value());
+        rsa_pkey = EVP_PKEY_get1_RSA(rsa_2048->GetEvpPkey());
+        CHECK(rsa_pkey);
+    }
+
+    std::thread([t]() {
+        std::string auth_key;
+        if (t->connection()->DoTlsHandshake(rsa_pkey, &auth_key)) {
+            LOG(INFO) << "auth_key=" << auth_key;
+            if (t->IsTcpDevice()) {
+                t->auth_key = auth_key;
+                adbd_wifi_secure_connect(t);
+            } else {
+                adbd_auth_verified(t);
+                adbd_notify_framework_connected_key(t);
+            }
+        } else {
+            // Only allow one attempt at the handshake.
+            t->Kick();
+        }
+    }).detach();
+}
diff --git a/adb/daemon/file_sync_service.cpp b/adb/daemon/file_sync_service.cpp
index e82a51f..07f6e65 100644
--- a/adb/daemon/file_sync_service.cpp
+++ b/adb/daemon/file_sync_service.cpp
@@ -32,6 +32,8 @@
 #include <utime.h>
 
 #include <memory>
+#include <optional>
+#include <span>
 #include <string>
 #include <vector>
 
@@ -40,10 +42,13 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 
-#include <private/android_filesystem_config.h>
+#include <adbd_fs.h>
+
+// Needed for __android_log_security_bswrite.
 #include <private/android_logger.h>
 
 #if defined(__ANDROID__)
+#include <linux/capability.h>
 #include <selinux/android.h>
 #include <sys/xattr.h>
 #endif
@@ -52,10 +57,12 @@
 #include "adb_io.h"
 #include "adb_trace.h"
 #include "adb_utils.h"
+#include "brotli_utils.h"
 #include "file_sync_protocol.h"
 #include "security_log_tags.h"
 #include "sysdeps/errno.h"
 
+using android::base::borrowed_fd;
 using android::base::Dirname;
 using android::base::StringPrintf;
 
@@ -98,7 +105,7 @@
     for (const auto& path_component : path_components) {
         uid_t uid = -1;
         gid_t gid = -1;
-        unsigned int mode = 0775;
+        mode_t mode = 0775;
         uint64_t capabilities = 0;
 
         if (path_component.empty()) {
@@ -111,7 +118,7 @@
         partial_path += path_component;
 
         if (should_use_fs_config(partial_path)) {
-            fs_config(partial_path.c_str(), 1, nullptr, &uid, &gid, &mode, &capabilities);
+            adbd_fs_config(partial_path.c_str(), 1, nullptr, &uid, &gid, &mode, &capabilities);
         }
         if (adb_mkdir(partial_path.c_str(), mode) == -1) {
             if (errno != EEXIST) {
@@ -139,7 +146,7 @@
     lstat(path, &st);
     msg.stat_v1.mode = st.st_mode;
     msg.stat_v1.size = st.st_size;
-    msg.stat_v1.time = st.st_mtime;
+    msg.stat_v1.mtime = st.st_mtime;
     return WriteFdExactly(s, &msg.stat_v1, sizeof(msg.stat_v1));
 }
 
@@ -174,46 +181,79 @@
     return WriteFdExactly(s, &msg.stat_v2, sizeof(msg.stat_v2));
 }
 
+template <bool v2>
 static bool do_list(int s, const char* path) {
     dirent* de;
 
-    syncmsg msg;
-    msg.dent.id = ID_DENT;
+    using MessageType =
+            std::conditional_t<v2, decltype(syncmsg::dent_v2), decltype(syncmsg::dent_v1)>;
+    MessageType msg;
+    uint32_t msg_id;
+    if constexpr (v2) {
+        msg_id = ID_DENT_V2;
+    } else {
+        msg_id = ID_DENT_V1;
+    }
 
     std::unique_ptr<DIR, int(*)(DIR*)> d(opendir(path), closedir);
     if (!d) goto done;
 
     while ((de = readdir(d.get()))) {
+        memset(&msg, 0, sizeof(msg));
+        msg.id = msg_id;
+
         std::string filename(StringPrintf("%s/%s", path, de->d_name));
 
         struct stat st;
         if (lstat(filename.c_str(), &st) == 0) {
-            size_t d_name_length = strlen(de->d_name);
-            msg.dent.mode = st.st_mode;
-            msg.dent.size = st.st_size;
-            msg.dent.time = st.st_mtime;
-            msg.dent.namelen = d_name_length;
+            msg.mode = st.st_mode;
+            msg.size = st.st_size;
+            msg.mtime = st.st_mtime;
 
-            if (!WriteFdExactly(s, &msg.dent, sizeof(msg.dent)) ||
-                    !WriteFdExactly(s, de->d_name, d_name_length)) {
-                return false;
+            if constexpr (v2) {
+                msg.dev = st.st_dev;
+                msg.ino = st.st_ino;
+                msg.nlink = st.st_nlink;
+                msg.uid = st.st_uid;
+                msg.gid = st.st_gid;
+                msg.atime = st.st_atime;
+                msg.ctime = st.st_ctime;
             }
+        } else {
+            if constexpr (v2) {
+                msg.error = errno;
+            } else {
+                continue;
+            }
+        }
+
+        size_t d_name_length = strlen(de->d_name);
+        msg.namelen = d_name_length;
+
+        if (!WriteFdExactly(s, &msg, sizeof(msg)) ||
+            !WriteFdExactly(s, de->d_name, d_name_length)) {
+            return false;
         }
     }
 
 done:
-    msg.dent.id = ID_DONE;
-    msg.dent.mode = 0;
-    msg.dent.size = 0;
-    msg.dent.time = 0;
-    msg.dent.namelen = 0;
-    return WriteFdExactly(s, &msg.dent, sizeof(msg.dent));
+    memset(&msg, 0, sizeof(msg));
+    msg.id = ID_DONE;
+    return WriteFdExactly(s, &msg, sizeof(msg));
+}
+
+static bool do_list_v1(int s, const char* path) {
+    return do_list<false>(s, path);
+}
+
+static bool do_list_v2(int s, const char* path) {
+    return do_list<true>(s, path);
 }
 
 // Make sure that SendFail from adb_io.cpp isn't accidentally used in this file.
 #pragma GCC poison SendFail
 
-static bool SendSyncFail(int fd, const std::string& reason) {
+static bool SendSyncFail(borrowed_fd fd, const std::string& reason) {
     D("sync: failure: %s", reason.c_str());
 
     syncmsg msg;
@@ -222,24 +262,96 @@
     return WriteFdExactly(fd, &msg.data, sizeof(msg.data)) && WriteFdExactly(fd, reason);
 }
 
-static bool SendSyncFailErrno(int fd, const std::string& reason) {
+static bool SendSyncFailErrno(borrowed_fd fd, const std::string& reason) {
     return SendSyncFail(fd, StringPrintf("%s: %s", reason.c_str(), strerror(errno)));
 }
 
-static bool handle_send_file(int s, const char* path, uint32_t* timestamp, uid_t uid, gid_t gid,
-                             uint64_t capabilities, mode_t mode, std::vector<char>& buffer,
-                             bool do_unlink) {
+static bool handle_send_file_compressed(borrowed_fd s, unique_fd fd, uint32_t* timestamp) {
+    syncmsg msg;
+    Block decode_buffer(SYNC_DATA_MAX);
+    BrotliDecoder decoder(std::span(decode_buffer.data(), decode_buffer.size()));
+    while (true) {
+        if (!ReadFdExactly(s, &msg.data, sizeof(msg.data))) return false;
+
+        if (msg.data.id != ID_DATA) {
+            if (msg.data.id == ID_DONE) {
+                *timestamp = msg.data.size;
+                return true;
+            }
+            SendSyncFail(s, "invalid data message");
+            return false;
+        }
+
+        Block block(msg.data.size);
+        if (!ReadFdExactly(s, block.data(), msg.data.size)) return false;
+        decoder.Append(std::move(block));
+
+        while (true) {
+            std::span<char> output;
+            BrotliDecodeResult result = decoder.Decode(&output);
+            if (result == BrotliDecodeResult::Error) {
+                SendSyncFailErrno(s, "decompress failed");
+                return false;
+            }
+
+            if (!WriteFdExactly(fd, output.data(), output.size())) {
+                SendSyncFailErrno(s, "write failed");
+                return false;
+            }
+
+            if (result == BrotliDecodeResult::NeedInput) {
+                break;
+            } else if (result == BrotliDecodeResult::MoreOutput) {
+                continue;
+            } else if (result == BrotliDecodeResult::Done) {
+                break;
+            } else {
+                LOG(FATAL) << "invalid BrotliDecodeResult: " << static_cast<int>(result);
+            }
+        }
+    }
+
+    __builtin_unreachable();
+}
+
+static bool handle_send_file_uncompressed(borrowed_fd s, unique_fd fd, uint32_t* timestamp,
+                                          std::vector<char>& buffer) {
+    syncmsg msg;
+
+    while (true) {
+        if (!ReadFdExactly(s, &msg.data, sizeof(msg.data))) return false;
+
+        if (msg.data.id != ID_DATA) {
+            if (msg.data.id == ID_DONE) {
+                *timestamp = msg.data.size;
+                return true;
+            }
+            SendSyncFail(s, "invalid data message");
+            return false;
+        }
+
+        if (msg.data.size > buffer.size()) {  // TODO: resize buffer?
+            SendSyncFail(s, "oversize data message");
+            return false;
+        }
+        if (!ReadFdExactly(s, &buffer[0], msg.data.size)) return false;
+        if (!WriteFdExactly(fd, &buffer[0], msg.data.size)) {
+            SendSyncFailErrno(s, "write failed");
+            return false;
+        }
+    }
+}
+
+static bool handle_send_file(borrowed_fd s, const char* path, uint32_t* timestamp, uid_t uid,
+                             gid_t gid, uint64_t capabilities, mode_t mode, bool compressed,
+                             std::vector<char>& buffer, bool do_unlink) {
+    int rc;
     syncmsg msg;
 
     __android_log_security_bswrite(SEC_TAG_ADB_SEND_FILE, path);
 
     unique_fd fd(adb_open_mode(path, O_WRONLY | O_CREAT | O_EXCL | O_CLOEXEC, mode));
 
-    if (posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE | POSIX_FADV_WILLNEED) <
-        0) {
-        D("[ Failed to fadvise: %d ]", errno);
-    }
-
     if (fd < 0 && errno == ENOENT) {
         if (!secure_mkdirs(Dirname(path))) {
             SendSyncFailErrno(s, "secure_mkdirs failed");
@@ -270,39 +382,33 @@
         fchmod(fd.get(), mode);
     }
 
-    while (true) {
-        if (!ReadFdExactly(s, &msg.data, sizeof(msg.data))) goto fail;
-
-        if (msg.data.id != ID_DATA) {
-            if (msg.data.id == ID_DONE) {
-                *timestamp = msg.data.size;
-                break;
-            }
-            SendSyncFail(s, "invalid data message");
-            goto abort;
+    {
+        rc = posix_fadvise(fd.get(), 0, 0,
+                           POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE | POSIX_FADV_WILLNEED);
+        if (rc != 0) {
+            D("[ Failed to fadvise: %s ]", strerror(rc));
         }
 
-        if (msg.data.size > buffer.size()) {  // TODO: resize buffer?
-            SendSyncFail(s, "oversize data message");
-            goto abort;
+        bool result;
+        if (compressed) {
+            result = handle_send_file_compressed(s, std::move(fd), timestamp);
+        } else {
+            result = handle_send_file_uncompressed(s, std::move(fd), timestamp, buffer);
         }
 
-        if (!ReadFdExactly(s, &buffer[0], msg.data.size)) goto abort;
-
-        if (!WriteFdExactly(fd.get(), &buffer[0], msg.data.size)) {
-            SendSyncFailErrno(s, "write failed");
+        if (!result) {
             goto fail;
         }
-    }
 
-    if (!update_capabilities(path, capabilities)) {
-        SendSyncFailErrno(s, "update_capabilities failed");
-        goto fail;
-    }
+        if (!update_capabilities(path, capabilities)) {
+            SendSyncFailErrno(s, "update_capabilities failed");
+            goto fail;
+        }
 
-    msg.status.id = ID_OKAY;
-    msg.status.msglen = 0;
-    return WriteFdExactly(s, &msg.status, sizeof(msg.status));
+        msg.status.id = ID_OKAY;
+        msg.status.msglen = 0;
+        return WriteFdExactly(s, &msg.status, sizeof(msg.status));
+    }
 
 fail:
     // If there's a problem on the device, we'll send an ID_FAIL message and
@@ -333,7 +439,6 @@
         if (!ReadFdExactly(s, &buffer[0], msg.data.size)) break;
     }
 
-abort:
     if (do_unlink) adb_unlink(path);
     return false;
 }
@@ -394,23 +499,8 @@
 }
 #endif
 
-static bool do_send(int s, const std::string& spec, std::vector<char>& buffer) {
-    // 'spec' is of the form "/some/path,0755". Break it up.
-    size_t comma = spec.find_last_of(',');
-    if (comma == std::string::npos) {
-        SendSyncFail(s, "missing , in ID_SEND");
-        return false;
-    }
-
-    std::string path = spec.substr(0, comma);
-
-    errno = 0;
-    mode_t mode = strtoul(spec.substr(comma + 1).c_str(), nullptr, 0);
-    if (errno != 0) {
-        SendSyncFail(s, "bad mode");
-        return false;
-    }
-
+static bool send_impl(int s, const std::string& path, mode_t mode, bool compressed,
+                      std::vector<char>& buffer) {
     // Don't delete files before copying if they are not "regular" or symlinks.
     struct stat st;
     bool do_unlink = (lstat(path.c_str(), &st) == -1) || S_ISREG(st.st_mode) ||
@@ -433,13 +523,11 @@
         gid_t gid = -1;
         uint64_t capabilities = 0;
         if (should_use_fs_config(path)) {
-            unsigned int broken_api_hack = mode;
-            fs_config(path.c_str(), 0, nullptr, &uid, &gid, &broken_api_hack, &capabilities);
-            mode = broken_api_hack;
+            adbd_fs_config(path.c_str(), 0, nullptr, &uid, &gid, &mode, &capabilities);
         }
 
-        result = handle_send_file(s, path.c_str(), &timestamp, uid, gid, capabilities, mode, buffer,
-                                  do_unlink);
+        result = handle_send_file(s, path.c_str(), &timestamp, uid, gid, capabilities, mode,
+                                  compressed, buffer, do_unlink);
     }
 
     if (!result) {
@@ -455,21 +543,55 @@
     return true;
 }
 
-static bool do_recv(int s, const char* path, std::vector<char>& buffer) {
-    __android_log_security_bswrite(SEC_TAG_ADB_RECV_FILE, path);
-
-    unique_fd fd(adb_open(path, O_RDONLY | O_CLOEXEC));
-    if (fd < 0) {
-        SendSyncFailErrno(s, "open failed");
+static bool do_send_v1(int s, const std::string& spec, std::vector<char>& buffer) {
+    // 'spec' is of the form "/some/path,0755". Break it up.
+    size_t comma = spec.find_last_of(',');
+    if (comma == std::string::npos) {
+        SendSyncFail(s, "missing , in ID_SEND_V1");
         return false;
     }
 
-    if (posix_fadvise(fd.get(), 0, 0, POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE) < 0) {
-        D("[ Failed to fadvise: %d ]", errno);
+    std::string path = spec.substr(0, comma);
+
+    errno = 0;
+    mode_t mode = strtoul(spec.substr(comma + 1).c_str(), nullptr, 0);
+    if (errno != 0) {
+        SendSyncFail(s, "bad mode");
+        return false;
     }
 
+    return send_impl(s, path, mode, false, buffer);
+}
+
+static bool do_send_v2(int s, const std::string& path, std::vector<char>& buffer) {
+    // Read the setup packet.
+    syncmsg msg;
+    int rc = ReadFdExactly(s, &msg.send_v2_setup, sizeof(msg.send_v2_setup));
+    if (rc == 0) {
+        LOG(ERROR) << "failed to read send_v2 setup packet: EOF";
+        return false;
+    } else if (rc < 0) {
+        PLOG(ERROR) << "failed to read send_v2 setup packet";
+    }
+
+    bool compressed = false;
+    if (msg.send_v2_setup.flags & kSyncFlagBrotli) {
+        msg.send_v2_setup.flags &= ~kSyncFlagBrotli;
+        compressed = true;
+    }
+    if (msg.send_v2_setup.flags) {
+        SendSyncFail(s, android::base::StringPrintf("unknown flags: %d", msg.send_v2_setup.flags));
+        return false;
+    }
+
+    errno = 0;
+    return send_impl(s, path, msg.send_v2_setup.mode, compressed, buffer);
+}
+
+static bool recv_uncompressed(borrowed_fd s, unique_fd fd, std::vector<char>& buffer) {
     syncmsg msg;
     msg.data.id = ID_DATA;
+    std::optional<BrotliEncoder<SYNC_DATA_MAX>> encoder;
     while (true) {
         int r = adb_read(fd.get(), &buffer[0], buffer.size() - sizeof(msg.data));
         if (r <= 0) {
@@ -478,16 +600,126 @@
             return false;
         }
         msg.data.size = r;
+
         if (!WriteFdExactly(s, &msg.data, sizeof(msg.data)) || !WriteFdExactly(s, &buffer[0], r)) {
             return false;
         }
     }
 
+    return true;
+}
+
+static bool recv_compressed(borrowed_fd s, unique_fd fd) {
+    syncmsg msg;
+    msg.data.id = ID_DATA;
+
+    BrotliEncoder<SYNC_DATA_MAX> encoder;
+
+    bool sending = true;
+    while (sending) {
+        Block input(SYNC_DATA_MAX);
+        int r = adb_read(fd.get(), input.data(), input.size());
+        if (r < 0) {
+            SendSyncFailErrno(s, "read failed");
+            return false;
+        }
+
+        if (r == 0) {
+            encoder.Finish();
+        } else {
+            input.resize(r);
+            encoder.Append(std::move(input));
+        }
+
+        while (true) {
+            Block output;
+            BrotliEncodeResult result = encoder.Encode(&output);
+            if (result == BrotliEncodeResult::Error) {
+                SendSyncFailErrno(s, "compress failed");
+                return false;
+            }
+
+            if (!output.empty()) {
+                msg.data.size = output.size();
+                if (!WriteFdExactly(s, &msg.data, sizeof(msg.data)) ||
+                    !WriteFdExactly(s, output.data(), output.size())) {
+                    return false;
+                }
+            }
+
+            if (result == BrotliEncodeResult::Done) {
+                sending = false;
+                break;
+            } else if (result == BrotliEncodeResult::NeedInput) {
+                break;
+            } else if (result == BrotliEncodeResult::MoreOutput) {
+                continue;
+            }
+        }
+    }
+
+    return true;
+}
+
+static bool recv_impl(borrowed_fd s, const char* path, bool compressed, std::vector<char>& buffer) {
+    __android_log_security_bswrite(SEC_TAG_ADB_RECV_FILE, path);
+
+    unique_fd fd(adb_open(path, O_RDONLY | O_CLOEXEC));
+    if (fd < 0) {
+        SendSyncFailErrno(s, "open failed");
+        return false;
+    }
+
+    int rc = posix_fadvise(fd.get(), 0, 0, POSIX_FADV_SEQUENTIAL | POSIX_FADV_NOREUSE);
+    if (rc != 0) {
+        D("[ Failed to fadvise: %s ]", strerror(rc));
+    }
+
+    bool result;
+    if (compressed) {
+        result = recv_compressed(s, std::move(fd));
+    } else {
+        result = recv_uncompressed(s, std::move(fd), buffer);
+    }
+
+    if (!result) {
+        return false;
+    }
+
+    syncmsg msg;
     msg.data.id = ID_DONE;
     msg.data.size = 0;
     return WriteFdExactly(s, &msg.data, sizeof(msg.data));
 }
 
+static bool do_recv_v1(borrowed_fd s, const char* path, std::vector<char>& buffer) {
+    return recv_impl(s, path, false, buffer);
+}
+
+static bool do_recv_v2(borrowed_fd s, const char* path, std::vector<char>& buffer) {
+    syncmsg msg;
+    // Read the setup packet.
+    int rc = ReadFdExactly(s, &msg.recv_v2_setup, sizeof(msg.recv_v2_setup));
+    if (rc == 0) {
+        LOG(ERROR) << "failed to read recv_v2 setup packet: EOF";
+        return false;
+    } else if (rc < 0) {
+        PLOG(ERROR) << "failed to read recv_v2 setup packet";
+    }
+
+    bool compressed = false;
+    if (msg.recv_v2_setup.flags & kSyncFlagBrotli) {
+        msg.recv_v2_setup.flags &= ~kSyncFlagBrotli;
+        compressed = true;
+    }
+    if (msg.recv_v2_setup.flags) {
+        SendSyncFail(s, android::base::StringPrintf("unknown flags: %d", msg.recv_v2_setup.flags));
+        return false;
+    }
+
+    return recv_impl(s, path, compressed, buffer);
+}
+
 static const char* sync_id_to_name(uint32_t id) {
   switch (id) {
     case ID_LSTAT_V1:
@@ -496,12 +728,18 @@
       return "lstat_v2";
     case ID_STAT_V2:
       return "stat_v2";
-    case ID_LIST:
-      return "list";
-    case ID_SEND:
-      return "send";
-    case ID_RECV:
-      return "recv";
+    case ID_LIST_V1:
+      return "list_v1";
+    case ID_LIST_V2:
+      return "list_v2";
+    case ID_SEND_V1:
+        return "send_v1";
+    case ID_SEND_V2:
+        return "send_v2";
+    case ID_RECV_V1:
+        return "recv_v1";
+    case ID_RECV_V2:
+        return "recv_v2";
     case ID_QUIT:
         return "quit";
     default:
@@ -512,7 +750,6 @@
 static bool handle_sync_command(int fd, std::vector<char>& buffer) {
     D("sync: waiting for request");
 
-    ATRACE_CALL();
     SyncRequest request;
     if (!ReadFdExactly(fd, &request, sizeof(request))) {
         SendSyncFail(fd, "command read failure");
@@ -531,8 +768,6 @@
     name[path_length] = 0;
 
     std::string id_name = sync_id_to_name(request.id);
-    std::string trace_name = StringPrintf("%s(%s)", id_name.c_str(), name);
-    ATRACE_NAME(trace_name.c_str());
 
     D("sync: %s('%s')", id_name.c_str(), name);
     switch (request.id) {
@@ -543,14 +778,23 @@
         case ID_STAT_V2:
             if (!do_stat_v2(fd, request.id, name)) return false;
             break;
-        case ID_LIST:
-            if (!do_list(fd, name)) return false;
+        case ID_LIST_V1:
+            if (!do_list_v1(fd, name)) return false;
             break;
-        case ID_SEND:
-            if (!do_send(fd, name, buffer)) return false;
+        case ID_LIST_V2:
+            if (!do_list_v2(fd, name)) return false;
             break;
-        case ID_RECV:
-            if (!do_recv(fd, name, buffer)) return false;
+        case ID_SEND_V1:
+            if (!do_send_v1(fd, name, buffer)) return false;
+            break;
+        case ID_SEND_V2:
+            if (!do_send_v2(fd, name, buffer)) return false;
+            break;
+        case ID_RECV_V1:
+            if (!do_recv_v1(fd, name, buffer)) return false;
+            break;
+        case ID_RECV_V2:
+            if (!do_recv_v2(fd, name, buffer)) return false;
             break;
         case ID_QUIT:
             return false;
diff --git a/adb/daemon/framebuffer_service.cpp b/adb/daemon/framebuffer_service.cpp
index 2a6418a..676f8e9 100644
--- a/adb/daemon/framebuffer_service.cpp
+++ b/adb/daemon/framebuffer_service.cpp
@@ -33,7 +33,6 @@
 #include "adb.h"
 #include "adb_io.h"
 #include "adb_utils.h"
-#include "fdevent.h"
 
 /* TODO:
 ** - sync with vsync to avoid tearing
diff --git a/adb/daemon/include/adbd/usb.h b/adb/daemon/include/adbd/usb.h
deleted file mode 100644
index fca3c58..0000000
--- a/adb/daemon/include/adbd/usb.h
+++ /dev/null
@@ -1,66 +0,0 @@
-#pragma once
-
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <atomic>
-#include <condition_variable>
-#include <mutex>
-#include <vector>
-
-#include <android-base/unique_fd.h>
-#include <asyncio/AsyncIO.h>
-
-struct aio_block {
-    std::vector<struct iocb> iocb;
-    std::vector<struct iocb*> iocbs;
-    std::vector<struct io_event> events;
-    aio_context_t ctx;
-    int num_submitted;
-    int fd;
-};
-
-struct usb_handle {
-    usb_handle() : kicked(false) {
-    }
-
-    std::condition_variable notify;
-    std::mutex lock;
-    std::atomic<bool> kicked;
-    bool open_new_connection = true;
-
-    int (*write)(usb_handle* h, const void* data, int len);
-    int (*read)(usb_handle* h, void* data, int len, bool allow_partial);
-    void (*kick)(usb_handle* h);
-    void (*close)(usb_handle* h);
-
-    // FunctionFS
-    android::base::unique_fd control;
-    android::base::unique_fd bulk_out;  // "out" from the host's perspective => source for adbd
-    android::base::unique_fd bulk_in;   // "in" from the host's perspective => sink for adbd
-
-    // Access to these blocks is very not thread safe. Have one block for each of the
-    // read and write threads.
-    struct aio_block read_aiob;
-    struct aio_block write_aiob;
-
-    bool reads_zero_packets;
-    size_t io_size;
-};
-
-usb_handle *create_usb_handle(unsigned num_bufs, unsigned io_size);
-bool open_functionfs(android::base::unique_fd* control, android::base::unique_fd* bulk_out,
-                     android::base::unique_fd* bulk_in);
diff --git a/adb/daemon/jdwp_service.cpp b/adb/daemon/jdwp_service.cpp
index 66bfc0d..b92a7de 100644
--- a/adb/daemon/jdwp_service.cpp
+++ b/adb/daemon/jdwp_service.cpp
@@ -30,15 +30,21 @@
 
 #include <list>
 #include <memory>
+#include <thread>
 #include <vector>
 
+#include <adbconnection/server.h>
 #include <android-base/cmsg.h>
+#include <android-base/unique_fd.h>
 
 #include "adb.h"
 #include "adb_io.h"
 #include "adb_unique_fd.h"
 #include "adb_utils.h"
 
+using android::base::borrowed_fd;
+using android::base::unique_fd;
+
 /* here's how these things work.
 
    when adbd starts, it creates a unix server socket
@@ -133,16 +139,16 @@
 static auto& _jdwp_list = *new std::list<std::unique_ptr<JdwpProcess>>();
 
 struct JdwpProcess {
-    explicit JdwpProcess(int socket) {
+    JdwpProcess(unique_fd socket, pid_t pid) {
+        CHECK(pid != 0);
+
         this->socket = socket;
-        this->fde = fdevent_create(socket, jdwp_process_event, this);
+        this->pid = pid;
+        this->fde = fdevent_create(socket.release(), jdwp_process_event, this);
 
         if (!this->fde) {
             LOG(FATAL) << "could not create fdevent for new JDWP process";
         }
-
-        /* start by waiting for the PID */
-        fdevent_add(this->fde, FDE_READ);
     }
 
     ~JdwpProcess() {
@@ -160,18 +166,12 @@
     }
 
     void RemoveFromList() {
-        if (this->pid >= 0) {
-            D("removing pid %d from jdwp process list", this->pid);
-        } else {
-            D("removing transient JdwpProcess from list");
-        }
-
         auto pred = [this](const auto& proc) { return proc.get() == this; };
         _jdwp_list.remove_if(pred);
     }
 
+    borrowed_fd socket = -1;
     int32_t pid = -1;
-    int socket = -1;
     fdevent* fde = nullptr;
 
     std::vector<unique_fd> out_fds;
@@ -181,11 +181,6 @@
     std::string temp;
 
     for (auto& proc : _jdwp_list) {
-        /* skip transient connections */
-        if (proc->pid < 0) {
-            continue;
-        }
-
         std::string next = std::to_string(proc->pid) + "\n";
         if (temp.length() + next.length() > bufferlen) {
             D("truncating JDWP process list (max len = %zu)", bufferlen);
@@ -214,24 +209,12 @@
 
 static void jdwp_process_event(int socket, unsigned events, void* _proc) {
     JdwpProcess* proc = reinterpret_cast<JdwpProcess*>(_proc);
-    CHECK_EQ(socket, proc->socket);
+    CHECK_EQ(socket, proc->socket.get());
 
     if (events & FDE_READ) {
-        if (proc->pid < 0) {
-            ssize_t rc = TEMP_FAILURE_RETRY(recv(socket, &proc->pid, sizeof(proc->pid), 0));
-            if (rc != sizeof(proc->pid)) {
-                D("failed to read jdwp pid: rc = %zd, errno = %s", rc, strerror(errno));
-                goto CloseProcess;
-            }
-
-            /* all is well, keep reading to detect connection closure */
-            D("Adding pid %d to jdwp process list", proc->pid);
-            jdwp_process_list_updated();
-        } else {
-            // We already have the PID, if we can read from the socket, we've probably hit EOF.
-            D("terminating JDWP connection %d", proc->pid);
-            goto CloseProcess;
-        }
+        // We already have the PID, if we can read from the socket, we've probably hit EOF.
+        D("terminating JDWP connection %d", proc->pid);
+        goto CloseProcess;
     }
 
     if (events & FDE_WRITE) {
@@ -284,98 +267,6 @@
     return unique_fd{};
 }
 
-/**  VM DEBUG CONTROL SOCKET
- **
- **  we do implement a custom asocket to receive the data
- **/
-
-/* name of the debug control Unix socket */
-#define JDWP_CONTROL_NAME "\0jdwp-control"
-#define JDWP_CONTROL_NAME_LEN (sizeof(JDWP_CONTROL_NAME) - 1)
-
-struct JdwpControl {
-    int listen_socket;
-    fdevent* fde;
-};
-
-static JdwpControl _jdwp_control;
-
-static void jdwp_control_event(int s, unsigned events, void* user);
-
-static int jdwp_control_init(JdwpControl* control, const char* sockname, int socknamelen) {
-    sockaddr_un addr;
-    socklen_t addrlen;
-    int maxpath = sizeof(addr.sun_path);
-    int pathlen = socknamelen;
-
-    if (pathlen >= maxpath) {
-        D("vm debug control socket name too long (%d extra chars)", pathlen + 1 - maxpath);
-        return -1;
-    }
-
-    memset(&addr, 0, sizeof(addr));
-    addr.sun_family = AF_UNIX;
-    memcpy(addr.sun_path, sockname, socknamelen);
-
-    unique_fd s(socket(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC, 0));
-    if (s < 0) {
-        D("could not create vm debug control socket. %d: %s", errno, strerror(errno));
-        return -1;
-    }
-
-    addrlen = pathlen + sizeof(addr.sun_family);
-
-    if (bind(s, reinterpret_cast<sockaddr*>(&addr), addrlen) < 0) {
-        D("could not bind vm debug control socket: %d: %s", errno, strerror(errno));
-        return -1;
-    }
-
-    if (listen(s, 4) < 0) {
-        D("listen failed in jdwp control socket: %d: %s", errno, strerror(errno));
-        return -1;
-    }
-
-    control->listen_socket = s.release();
-    control->fde = fdevent_create(control->listen_socket, jdwp_control_event, control);
-    if (control->fde == nullptr) {
-        D("could not create fdevent for jdwp control socket");
-        return -1;
-    }
-
-    /* only wait for incoming connections */
-    fdevent_add(control->fde, FDE_READ);
-
-    D("jdwp control socket started (%d)", control->listen_socket);
-    return 0;
-}
-
-static void jdwp_control_event(int fd, unsigned events, void* _control) {
-    JdwpControl* control = (JdwpControl*)_control;
-
-    CHECK_EQ(fd, control->listen_socket);
-    if (events & FDE_READ) {
-        int s = adb_socket_accept(control->listen_socket, nullptr, nullptr);
-        if (s < 0) {
-            if (errno == ECONNABORTED) {
-                /* oops, the JDWP process died really quick */
-                D("oops, the JDWP process died really quick");
-                return;
-            } else {
-                /* the socket is probably closed ? */
-                D("weird accept() failed on jdwp control socket: %s", strerror(errno));
-                return;
-            }
-        }
-
-        auto proc = std::make_unique<JdwpProcess>(s);
-        if (!proc) {
-            LOG(FATAL) << "failed to allocate JdwpProcess";
-        }
-
-        _jdwp_list.emplace_back(std::move(proc));
-    }
-}
-
 /** "jdwp" local service implementation
  ** this simply returns the list of known JDWP process pids
  **/
@@ -526,7 +417,22 @@
 }
 
 int init_jdwp(void) {
-    return jdwp_control_init(&_jdwp_control, JDWP_CONTROL_NAME, JDWP_CONTROL_NAME_LEN);
+    std::thread([]() {
+        adb_thread_setname("jdwp control");
+        adbconnection_listen([](int fd, pid_t pid) {
+            LOG(INFO) << "jdwp connection from " << pid;
+            fdevent_run_on_main_thread([fd, pid] {
+                unique_fd ufd(fd);
+                auto proc = std::make_unique<JdwpProcess>(std::move(ufd), pid);
+                if (!proc) {
+                    LOG(FATAL) << "failed to allocate JdwpProcess";
+                }
+                _jdwp_list.emplace_back(std::move(proc));
+                jdwp_process_list_updated();
+            });
+        });
+    }).detach();
+    return 0;
 }
 
 #endif /* !ADB_HOST */
diff --git a/adb/daemon/logging.cpp b/adb/daemon/logging.cpp
new file mode 100644
index 0000000..203c6c7
--- /dev/null
+++ b/adb/daemon/logging.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "daemon/logging.h"
+
+#include <mutex>
+#include <optional>
+#include <string_view>
+
+#include <android-base/no_destructor.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <android-base/thread_annotations.h>
+
+#if defined(__ANDROID__)
+struct LogStatus {
+    bool enabled[static_cast<size_t>(adb::LogType::COUNT)];
+
+    bool& operator[](adb::LogType type) { return enabled[static_cast<size_t>(type)]; }
+};
+
+using android::base::CachedProperty;
+using android::base::NoDestructor;
+
+static NoDestructor<std::mutex> log_mutex;
+static NoDestructor<CachedProperty> log_property GUARDED_BY(log_mutex)("debug.adbd.logging");
+static std::optional<LogStatus> cached_log_status GUARDED_BY(log_mutex);
+
+static NoDestructor<CachedProperty> persist_log_property
+        GUARDED_BY(log_mutex)("persist.debug.adbd.logging");
+static std::optional<LogStatus> cached_persist_log_status GUARDED_BY(log_mutex);
+
+static LogStatus ParseLogStatus(std::string_view str) {
+    LogStatus result = {};
+    for (const auto& part : android::base::Split(std::string(str), ",")) {
+        if (part == "cnxn") {
+            result[adb::LogType::Connection] = true;
+        } else if (part == "service") {
+            result[adb::LogType::Service] = true;
+        } else if (part == "shell") {
+            result[adb::LogType::Shell] = true;
+        } else if (part == "all") {
+            result[adb::LogType::Connection] = true;
+            result[adb::LogType::Service] = true;
+            result[adb::LogType::Shell] = true;
+        }
+    }
+    return result;
+}
+
+static LogStatus GetLogStatus(android::base::CachedProperty* property,
+                              std::optional<LogStatus>* cached_status) REQUIRES(log_mutex) {
+    bool changed;
+    const char* value = property->Get(&changed);
+    if (changed || !*cached_status) {
+        **cached_status = ParseLogStatus(value);
+    }
+    return **cached_status;
+}
+
+namespace adb {
+bool is_logging_enabled(LogType type) {
+    std::lock_guard<std::mutex> lock(*log_mutex);
+    return GetLogStatus(log_property.get(), &cached_log_status)[type] ||
+           GetLogStatus(persist_log_property.get(), &cached_persist_log_status)[type];
+}
+}  // namespace adb
+
+#else
+
+namespace adb {
+bool is_logging_enabled(LogType type) {
+    return false;
+}
+}  // namespace adb
+#endif
diff --git a/adb/daemon/logging.h b/adb/daemon/logging.h
new file mode 100644
index 0000000..3e28bef
--- /dev/null
+++ b/adb/daemon/logging.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/logging.h>
+
+namespace adb {
+enum class LogType {
+    Connection,
+    Service,
+    Shell,
+    COUNT,
+};
+
+bool is_logging_enabled(LogType type);
+
+#define ADB_LOG(type) ::adb::is_logging_enabled(::adb::LogType::type) && LOG(INFO)
+
+}  // namespace adb
diff --git a/adb/daemon/main.cpp b/adb/daemon/main.cpp
index e5a4917..658e244 100644
--- a/adb/daemon/main.cpp
+++ b/adb/daemon/main.cpp
@@ -32,11 +32,13 @@
 #include <sys/prctl.h>
 
 #include <memory>
+#include <vector>
 
 #include <android-base/logging.h>
 #include <android-base/macros.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
+#include <android-base/strings.h>
 
 #if defined(__ANDROID__)
 #include <libminijail.h>
@@ -51,6 +53,8 @@
 #include "adb_auth.h"
 #include "adb_listeners.h"
 #include "adb_utils.h"
+#include "adb_wifi.h"
+#include "socket_spec.h"
 #include "transport.h"
 
 #include "mdns.h"
@@ -58,23 +62,7 @@
 #if defined(__ANDROID__)
 static const char* root_seclabel = nullptr;
 
-static inline bool is_device_unlocked() {
-    return "orange" == android::base::GetProperty("ro.boot.verifiedbootstate", "");
-}
-
-static bool should_drop_capabilities_bounding_set() {
-    if (ALLOW_ADBD_ROOT || is_device_unlocked()) {
-        if (__android_log_is_debuggable()) {
-            return false;
-        }
-    }
-    return true;
-}
-
 static bool should_drop_privileges() {
-    // "adb root" not allowed, always drop privileges.
-    if (!ALLOW_ADBD_ROOT && !is_device_unlocked()) return true;
-
     // The properties that affect `adb root` and `adb unroot` are ro.secure and
     // ro.debuggable. In this context the names don't make the expected behavior
     // particularly obvious.
@@ -128,7 +116,7 @@
     // Don't listen on a port (default 5037) if running in secure mode.
     // Don't run as root if running in secure mode.
     if (should_drop_privileges()) {
-        const bool should_drop_caps = should_drop_capabilities_bounding_set();
+        const bool should_drop_caps = !__android_log_is_debuggable();
 
         if (should_drop_caps) {
             minijail_use_caps(jail.get(), CAP_TO_MASK(CAP_SETUID) | CAP_TO_MASK(CAP_SETGID));
@@ -179,12 +167,27 @@
 }
 #endif
 
-static void setup_port(int port) {
-    LOG(INFO) << "adbd listening on port " << port;
-    local_init(port);
+static void setup_adb(const std::vector<std::string>& addrs) {
 #if defined(__ANDROID__)
+    // Get the first valid port from addrs and setup mDNS.
+    int port = -1;
+    std::string error;
+    for (const auto& addr : addrs) {
+        port = get_host_socket_spec_port(addr, &error);
+        if (port != -1) {
+            break;
+        }
+    }
+    if (port == -1) {
+        port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
+    }
+    LOG(INFO) << "Setup mdns on port= " << port;
     setup_mdns(port);
 #endif
+    for (const auto& addr : addrs) {
+        LOG(INFO) << "adbd listening on " << addr;
+        local_init(addr);
+    }
 }
 
 int adbd_main(int server_port) {
@@ -205,17 +208,14 @@
     // descriptor will always be open.
     adbd_cloexec_auth_socket();
 
-#if defined(ALLOW_ADBD_NO_AUTH)
-    // If ro.adb.secure is unset, default to no authentication required.
-    auth_required = android::base::GetBoolProperty("ro.adb.secure", false);
-#elif defined(__ANDROID__)
-    if (is_device_unlocked()) {  // allows no authentication when the device is unlocked.
+#if defined(__ANDROID__)
+    // If we're on userdebug/eng or the device is unlocked, permit no-authentication.
+    bool device_unlocked = "orange" == android::base::GetProperty("ro.boot.verifiedbootstate", "");
+    if (__android_log_is_debuggable() || device_unlocked) {
         auth_required = android::base::GetBoolProperty("ro.adb.secure", false);
     }
 #endif
 
-    adbd_auth_init();
-
     // Our external storage path may be different than apps, since
     // we aren't able to bind mount after dropping root.
     const char* adb_external_storage = getenv("ADB_EXTERNAL_STORAGE");
@@ -230,6 +230,9 @@
     drop_privileges(server_port);
 #endif
 
+    // adbd_auth_init will spawn a thread, so we need to defer it until after selinux transitions.
+    adbd_auth_init();
+
     bool is_usb = false;
 
 #if defined(__ANDROID__)
@@ -243,19 +246,38 @@
     // If one of these properties is set, also listen on that port.
     // If one of the properties isn't set and we couldn't listen on usb, listen
     // on the default port.
-    std::string prop_port = android::base::GetProperty("service.adb.tcp.port", "");
-    if (prop_port.empty()) {
-        prop_port = android::base::GetProperty("persist.adb.tcp.port", "");
-    }
+    std::vector<std::string> addrs;
+    std::string prop_addr = android::base::GetProperty("service.adb.listen_addrs", "");
+    if (prop_addr.empty()) {
+        std::string prop_port = android::base::GetProperty("service.adb.tcp.port", "");
+        if (prop_port.empty()) {
+            prop_port = android::base::GetProperty("persist.adb.tcp.port", "");
+        }
 
-    int port;
-    if (sscanf(prop_port.c_str(), "%d", &port) == 1 && port > 0) {
-        D("using port=%d", port);
-        // Listen on TCP port specified by service.adb.tcp.port property.
-        setup_port(port);
-    } else if (!is_usb) {
-        // Listen on default port.
-        setup_port(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
+#if !defined(__ANDROID__)
+        if (prop_port.empty() && getenv("ADBD_PORT")) {
+            prop_port = getenv("ADBD_PORT");
+        }
+#endif
+
+        int port;
+        if (sscanf(prop_port.c_str(), "%d", &port) == 1 && port > 0) {
+            D("using tcp port=%d", port);
+            // Listen on TCP and VSOCK port specified by service.adb.tcp.port property.
+            addrs.push_back(android::base::StringPrintf("tcp:%d", port));
+            addrs.push_back(android::base::StringPrintf("vsock:%d", port));
+            setup_adb(addrs);
+        } else if (!is_usb) {
+            // Listen on default port.
+            addrs.push_back(
+                    android::base::StringPrintf("tcp:%d", DEFAULT_ADB_LOCAL_TRANSPORT_PORT));
+            addrs.push_back(
+                    android::base::StringPrintf("vsock:%d", DEFAULT_ADB_LOCAL_TRANSPORT_PORT));
+            setup_adb(addrs);
+        }
+    } else {
+        addrs = android::base::Split(prop_addr, ",");
+        setup_adb(addrs);
     }
 
     D("adbd_main(): pre init_jdwp()");
@@ -276,9 +298,10 @@
 
     while (true) {
         static struct option opts[] = {
-            {"root_seclabel", required_argument, nullptr, 's'},
-            {"device_banner", required_argument, nullptr, 'b'},
-            {"version", no_argument, nullptr, 'v'},
+                {"root_seclabel", required_argument, nullptr, 's'},
+                {"device_banner", required_argument, nullptr, 'b'},
+                {"version", no_argument, nullptr, 'v'},
+                {"logpostfsdata", no_argument, nullptr, 'l'},
         };
 
         int option_index = 0;
@@ -300,6 +323,9 @@
                 printf("Android Debug Bridge Daemon version %d.%d.%d\n", ADB_VERSION_MAJOR,
                        ADB_VERSION_MINOR, ADB_SERVER_VERSION);
                 return 0;
+            case 'l':
+                LOG(ERROR) << "post-fs-data triggered";
+                return 0;
             default:
                 // getopt already prints "adbd: invalid option -- %c" for us.
                 return 1;
diff --git a/adb/daemon/mdns.cpp b/adb/daemon/mdns.cpp
index 3530f48..fa692c0 100644
--- a/adb/daemon/mdns.cpp
+++ b/adb/daemon/mdns.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include "mdns.h"
 #include "adb_mdns.h"
 #include "sysdeps.h"
 
@@ -23,6 +24,7 @@
 
 #include <chrono>
 #include <mutex>
+#include <random>
 #include <thread>
 
 #include <android-base/logging.h>
@@ -32,10 +34,10 @@
 
 static std::mutex& mdns_lock = *new std::mutex();
 static int port;
-static DNSServiceRef mdns_ref;
-static bool mdns_registered = false;
+static DNSServiceRef mdns_refs[kNumADBDNSServices];
+static bool mdns_registered[kNumADBDNSServices];
 
-static void start_mdns() {
+void start_mdnsd() {
     if (android::base::GetProperty("init.svc.mdnsd", "") == "running") {
         return;
     }
@@ -60,38 +62,158 @@
     }
 }
 
-static void setup_mdns_thread() {
-    start_mdns();
+static void register_mdns_service(int index, int port, const std::string service_name) {
     std::lock_guard<std::mutex> lock(mdns_lock);
 
-    std::string hostname = "adb-";
-    hostname += android::base::GetProperty("ro.serialno", "unidentified");
 
-    auto error = DNSServiceRegister(&mdns_ref, 0, 0, hostname.c_str(),
-                                    kADBServiceType, nullptr, nullptr,
-                                    htobe16((uint16_t)port), 0, nullptr,
-                                    mdns_callback, nullptr);
+    // https://tools.ietf.org/html/rfc6763
+    // """
+    // The format of the data within a DNS TXT record is one or more
+    // strings, packed together in memory without any intervening gaps or
+    // padding bytes for word alignment.
+    //
+    // The format of each constituent string within the DNS TXT record is a
+    // single length byte, followed by 0-255 bytes of text data.
+    // """
+    //
+    // Therefore:
+    // 1. Begin with the string length
+    // 2. No null termination
+
+    std::vector<char> txtRecord;
+
+    if (kADBDNSServiceTxtRecords[index]) {
+        size_t txtRecordStringLength = strlen(kADBDNSServiceTxtRecords[index]);
+
+        txtRecord.resize(1 +                    // length byte
+                         txtRecordStringLength  // string bytes
+        );
+
+        txtRecord[0] = (char)txtRecordStringLength;
+        memcpy(txtRecord.data() + 1, kADBDNSServiceTxtRecords[index], txtRecordStringLength);
+    }
+
+    auto error = DNSServiceRegister(
+            &mdns_refs[index], 0, 0, service_name.c_str(), kADBDNSServices[index], nullptr, nullptr,
+            htobe16((uint16_t)port), (uint16_t)txtRecord.size(),
+            txtRecord.empty() ? nullptr : txtRecord.data(), mdns_callback, nullptr);
 
     if (error != kDNSServiceErr_NoError) {
-        LOG(ERROR) << "Could not register mDNS service (" << error << ").";
-        return;
+        LOG(ERROR) << "Could not register mDNS service " << kADBDNSServices[index] << ", error ("
+                   << error << ").";
+        mdns_registered[index] = false;
     }
 
-    mdns_registered = true;
+    mdns_registered[index] = true;
+
+    LOG(INFO) << "adbd mDNS service " << kADBDNSServices[index]
+              << " registered: " << mdns_registered[index];
 }
 
-static void teardown_mdns() {
+static void unregister_mdns_service(int index) {
     std::lock_guard<std::mutex> lock(mdns_lock);
 
-    if (mdns_registered) {
-        DNSServiceRefDeallocate(mdns_ref);
+    if (mdns_registered[index]) {
+        DNSServiceRefDeallocate(mdns_refs[index]);
     }
 }
 
+static void register_base_mdns_transport() {
+    std::string hostname = "adb-";
+    hostname += android::base::GetProperty("ro.serialno", "unidentified");
+    register_mdns_service(kADBTransportServiceRefIndex, port, hostname);
+}
+
+static void setup_mdns_thread() {
+    start_mdnsd();
+
+    // We will now only set up the normal transport mDNS service
+    // instead of registering all the adb secure mDNS services
+    // in the beginning. This is to provide more privacy/security.
+    register_base_mdns_transport();
+}
+
+// This also tears down any adb secure mDNS services, if they exist.
+static void teardown_mdns() {
+    for (int i = 0; i < kNumADBDNSServices; ++i) {
+        unregister_mdns_service(i);
+    }
+}
+
+static std::string RandomAlphaNumString(size_t len) {
+    std::string ret;
+    std::random_device rd;
+    std::mt19937 mt(rd());
+    // Generate values starting with zero and then up to enough to cover numeric
+    // digits, small letters and capital letters (26 each).
+    std::uniform_int_distribution<uint8_t> dist(0, 61);
+    for (size_t i = 0; i < len; ++i) {
+        uint8_t val = dist(mt);
+        if (val < 10) {
+            ret += '0' + val;
+        } else if (val < 36) {
+            ret += 'A' + (val - 10);
+        } else {
+            ret += 'a' + (val - 36);
+        }
+    }
+    return ret;
+}
+
+static std::string GenerateDeviceGuid() {
+    // The format is adb-<serial_no>-<six-random-alphanum>
+    std::string guid = "adb-";
+
+    std::string serial = android::base::GetProperty("ro.serialno", "");
+    if (serial.empty()) {
+        // Generate 16-bytes of random alphanum string
+        serial = RandomAlphaNumString(16);
+    }
+    guid += serial + '-';
+    // Random six-char suffix
+    guid += RandomAlphaNumString(6);
+    return guid;
+}
+
+static std::string ReadDeviceGuid() {
+    std::string guid = android::base::GetProperty("persist.adb.wifi.guid", "");
+    if (guid.empty()) {
+        guid = GenerateDeviceGuid();
+        CHECK(!guid.empty());
+        android::base::SetProperty("persist.adb.wifi.guid", guid);
+    }
+    return guid;
+}
+
+// Public interface/////////////////////////////////////////////////////////////
+
 void setup_mdns(int port_in) {
+    // Make sure the adb wifi guid is generated.
+    std::string guid = ReadDeviceGuid();
+    CHECK(!guid.empty());
     port = port_in;
     std::thread(setup_mdns_thread).detach();
 
     // TODO: Make this more robust against a hard kill.
     atexit(teardown_mdns);
 }
+
+void register_adb_secure_connect_service(int port) {
+    std::thread([port]() {
+        auto service_name = ReadDeviceGuid();
+        if (service_name.empty()) {
+            return;
+        }
+        LOG(INFO) << "Registering secure_connect service (" << service_name << ")";
+        register_mdns_service(kADBSecureConnectServiceRefIndex, port, service_name);
+    }).detach();
+}
+
+void unregister_adb_secure_connect_service() {
+    std::thread([]() { unregister_mdns_service(kADBSecureConnectServiceRefIndex); }).detach();
+}
+
+bool is_adb_secure_connect_service_registered() {
+    std::lock_guard<std::mutex> lock(mdns_lock);
+    return mdns_registered[kADBSecureConnectServiceRefIndex];
+}
diff --git a/adb/daemon/mdns.h b/adb/daemon/mdns.h
index 4c6b1ca..e7e7a62 100644
--- a/adb/daemon/mdns.h
+++ b/adb/daemon/mdns.h
@@ -19,4 +19,9 @@
 
 void setup_mdns(int port);
 
+void register_adb_secure_connect_service(int port);
+void unregister_adb_secure_connect_service();
+bool is_adb_secure_connect_service_registered();
+
+void start_mdnsd();
 #endif  // _DAEMON_MDNS_H_
diff --git a/adb/daemon/reboot_service.cpp b/adb/daemon/reboot_service.cpp
deleted file mode 100644
index a5a11b8..0000000
--- a/adb/daemon/reboot_service.cpp
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define TRACE_TAG SERVICES
-
-#include "sysdeps.h"
-
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <unistd.h>
-
-#include <string>
-
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-#include <android-base/stringprintf.h>
-#include <bootloader_message/bootloader_message.h>
-#include <cutils/android_reboot.h>
-
-#include "adb_io.h"
-#include "adb_unique_fd.h"
-
-void reboot_service(unique_fd fd, const std::string& arg) {
-    std::string reboot_arg = arg;
-    sync();
-
-    if (reboot_arg.empty()) reboot_arg = "adb";
-    std::string reboot_string = android::base::StringPrintf("reboot,%s", reboot_arg.c_str());
-
-    if (reboot_arg == "fastboot" &&
-        android::base::GetBoolProperty("ro.boot.dynamic_partitions", false) &&
-        access("/dev/socket/recovery", F_OK) == 0) {
-        LOG(INFO) << "Recovery specific reboot fastboot";
-        /*
-         * The socket is created to allow switching between recovery and
-         * fastboot.
-         */
-        android::base::unique_fd sock(socket(AF_UNIX, SOCK_STREAM, 0));
-        if (sock < 0) {
-            WriteFdFmt(fd, "reboot (%s) create\n", strerror(errno));
-            PLOG(ERROR) << "Creating recovery socket failed";
-            return;
-        }
-
-        sockaddr_un addr = {.sun_family = AF_UNIX};
-        strncpy(addr.sun_path, "/dev/socket/recovery", sizeof(addr.sun_path) - 1);
-        if (connect(sock, reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == -1) {
-            WriteFdFmt(fd, "reboot (%s) connect\n", strerror(errno));
-            PLOG(ERROR) << "Couldn't connect to recovery socket";
-            return;
-        }
-        const char msg_switch_to_fastboot = 'f';
-        auto ret = adb_write(sock, &msg_switch_to_fastboot, sizeof(msg_switch_to_fastboot));
-        if (ret != sizeof(msg_switch_to_fastboot)) {
-            WriteFdFmt(fd, "reboot (%s) write\n", strerror(errno));
-            PLOG(ERROR) << "Couldn't write message to recovery socket to switch to fastboot";
-            return;
-        }
-    } else {
-        if (!android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_string)) {
-            WriteFdFmt(fd.get(), "reboot (%s) failed\n", reboot_string.c_str());
-            return;
-        }
-    }
-    // Don't return early. Give the reboot command time to take effect
-    // to avoid messing up scripts which do "adb reboot && adb wait-for-device"
-    while (true) {
-        pause();
-    }
-}
diff --git a/adb/daemon/reboot_service.h b/adb/daemon/reboot_service.h
deleted file mode 100644
index f68913e..0000000
--- a/adb/daemon/reboot_service.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <string>
-
-#include "adb_unique_fd.h"
-
-#if defined(__ANDROID__)
-void reboot_service(unique_fd fd, const std::string& arg);
-#endif
diff --git a/adb/daemon/remount_service.cpp b/adb/daemon/remount_service.cpp
deleted file mode 100644
index ce494ee..0000000
--- a/adb/daemon/remount_service.cpp
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <string>
-
-#include "adb.h"
-#include "adb_io.h"
-#include "adb_unique_fd.h"
-
-static constexpr char kRemountCmd[] = "/system/bin/remount";
-
-static bool do_remount(int fd, const std::string& cmd) {
-    if (getuid() != 0) {
-        WriteFdExactly(fd, "Not running as root. Try \"adb root\" first.\n");
-        return false;
-    }
-
-    auto pid = fork();
-    if (pid < 0) {
-        WriteFdFmt(fd, "Failed to fork to %s: %s\n", kRemountCmd, strerror(errno));
-        return false;
-    }
-
-    if (pid == 0) {
-        // child side of the fork
-        dup2(fd, STDIN_FILENO);
-        dup2(fd, STDOUT_FILENO);
-        dup2(fd, STDERR_FILENO);
-
-        execl(kRemountCmd, kRemountCmd, cmd.empty() ? nullptr : cmd.c_str(), nullptr);
-        _exit(errno);
-    }
-
-    int wstatus = 0;
-    auto ret = waitpid(pid, &wstatus, 0);
-
-    if (ret == -1) {
-        WriteFdFmt(fd, "Failed to wait for %s: %s\n", kRemountCmd, strerror(errno));
-        return false;
-    } else if (ret != pid) {
-        WriteFdFmt(fd, "pid %d and waitpid return %d do not match for %s\n",
-                   static_cast<int>(pid), static_cast<int>(ret), kRemountCmd);
-        return false;
-    }
-
-    if (WIFSIGNALED(wstatus)) {
-        WriteFdFmt(fd, "%s terminated with signal %s\n", kRemountCmd,
-                   strsignal(WTERMSIG(wstatus)));
-        return false;
-    }
-
-    if (!WIFEXITED(wstatus)) {
-        WriteFdFmt(fd, "%s stopped with status 0x%x\n", kRemountCmd, wstatus);
-        return false;
-    }
-
-    if (WEXITSTATUS(wstatus)) {
-        WriteFdFmt(fd, "%s exited with status %d\n", kRemountCmd, WEXITSTATUS(wstatus));
-        return false;
-    }
-
-    return true;
-}
-
-void remount_service(unique_fd fd, const std::string& cmd) {
-    const char* success = do_remount(fd.get(), cmd) ? "succeeded" : "failed";
-    WriteFdFmt(fd.get(), "remount %s\n", success);
-}
diff --git a/adb/daemon/remount_service.h b/adb/daemon/remount_service.h
deleted file mode 100644
index 522a5da..0000000
--- a/adb/daemon/remount_service.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <string>
-
-#include "adb_unique_fd.h"
-
-#if defined(__ANDROID__)
-void remount_service(unique_fd, const std::string&);
-#endif
diff --git a/adb/daemon/services.cpp b/adb/daemon/services.cpp
index b0cc450..6bbf66e 100644
--- a/adb/daemon/services.cpp
+++ b/adb/daemon/services.cpp
@@ -39,6 +39,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
+#include <cutils/android_reboot.h>
 #include <cutils/sockets.h>
 #include <log/log_properties.h>
 
@@ -53,13 +54,10 @@
 
 #include "daemon/file_sync_service.h"
 #include "daemon/framebuffer_service.h"
-#include "daemon/reboot_service.h"
-#include "daemon/remount_service.h"
+#include "daemon/logging.h"
 #include "daemon/restart_service.h"
-#include "daemon/set_verity_enable_state_service.h"
 #include "daemon/shell_service.h"
 
-
 void reconnect_service(unique_fd fd, atransport* t) {
     WriteFdExactly(fd.get(), "done");
     kick_transport(t);
@@ -143,6 +141,26 @@
     WriteFdExactly(fd.get(), "spinning\n");
 }
 
+[[maybe_unused]] static unique_fd reboot_device(const std::string& name) {
+#if defined(__ANDROID_RECOVERY__)
+    if (!__android_log_is_debuggable()) {
+        auto reboot_service = [name](unique_fd fd) {
+            std::string reboot_string = android::base::StringPrintf("reboot,%s", name.c_str());
+            if (!android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_string)) {
+                WriteFdFmt(fd.get(), "reboot (%s) failed\n", reboot_string.c_str());
+                return;
+            }
+            while (true) pause();
+        };
+        return create_service_thread("reboot", reboot_service);
+    }
+#endif
+    // Fall through
+    std::string cmd = "/system/bin/reboot ";
+    cmd += name;
+    return StartSubprocess(cmd, nullptr, SubprocessType::kRaw, SubprocessProtocol::kNone);
+}
+
 struct ServiceSocket : public asocket {
     ServiceSocket() {
         install_local_socket(this);
@@ -223,13 +241,13 @@
         return create_jdwp_service_socket();
     } else if (name == "track-jdwp") {
         return create_jdwp_tracker_service_socket();
-    } else if (ConsumePrefix(&name, "sink:")) {
+    } else if (android::base::ConsumePrefix(&name, "sink:")) {
         uint64_t byte_count = 0;
         if (!ParseUint(&byte_count, name)) {
             return nullptr;
         }
         return new SinkSocket(byte_count);
-    } else if (ConsumePrefix(&name, "source:")) {
+    } else if (android::base::ConsumePrefix(&name, "source:")) {
         uint64_t byte_count = 0;
         if (!ParseUint(&byte_count, name)) {
             return nullptr;
@@ -241,6 +259,8 @@
 }
 
 unique_fd daemon_service_to_fd(std::string_view name, atransport* transport) {
+    ADB_LOG(Service) << "transport " << transport->serial_name() << " opening service " << name;
+
 #if defined(__ANDROID__) && !defined(__ANDROID_RECOVERY__)
     if (name.starts_with("abb:") || name.starts_with("abb_exec:")) {
         return execute_abb_command(name);
@@ -250,19 +270,17 @@
 #if defined(__ANDROID__)
     if (name.starts_with("framebuffer:")) {
         return create_service_thread("fb", framebuffer_service);
-    } else if (ConsumePrefix(&name, "remount:")) {
-        std::string arg(name);
-        return create_service_thread("remount",
-                                     std::bind(remount_service, std::placeholders::_1, arg));
-    } else if (ConsumePrefix(&name, "reboot:")) {
-        std::string arg(name);
-        return create_service_thread("reboot",
-                                     std::bind(reboot_service, std::placeholders::_1, arg));
+    } else if (android::base::ConsumePrefix(&name, "remount:")) {
+        std::string cmd = "/system/bin/remount ";
+        cmd += name;
+        return StartSubprocess(cmd, nullptr, SubprocessType::kRaw, SubprocessProtocol::kNone);
+    } else if (android::base::ConsumePrefix(&name, "reboot:")) {
+        return reboot_device(std::string(name));
     } else if (name.starts_with("root:")) {
         return create_service_thread("root", restart_root_service);
     } else if (name.starts_with("unroot:")) {
         return create_service_thread("unroot", restart_unroot_service);
-    } else if (ConsumePrefix(&name, "backup:")) {
+    } else if (android::base::ConsumePrefix(&name, "backup:")) {
         std::string cmd = "/system/bin/bu backup ";
         cmd += name;
         return StartSubprocess(cmd, nullptr, SubprocessType::kRaw, SubprocessProtocol::kNone);
@@ -270,12 +288,12 @@
         return StartSubprocess("/system/bin/bu restore", nullptr, SubprocessType::kRaw,
                                SubprocessProtocol::kNone);
     } else if (name.starts_with("disable-verity:")) {
-        return create_service_thread("verity-on", std::bind(set_verity_enabled_state_service,
-                                                            std::placeholders::_1, false));
+        return StartSubprocess("/system/bin/disable-verity", nullptr, SubprocessType::kRaw,
+                               SubprocessProtocol::kNone);
     } else if (name.starts_with("enable-verity:")) {
-        return create_service_thread("verity-off", std::bind(set_verity_enabled_state_service,
-                                                             std::placeholders::_1, true));
-    } else if (ConsumePrefix(&name, "tcpip:")) {
+        return StartSubprocess("/system/bin/enable-verity", nullptr, SubprocessType::kRaw,
+                               SubprocessProtocol::kNone);
+    } else if (android::base::ConsumePrefix(&name, "tcpip:")) {
         std::string str(name);
 
         int port;
@@ -289,22 +307,22 @@
     }
 #endif
 
-    if (ConsumePrefix(&name, "dev:")) {
+    if (android::base::ConsumePrefix(&name, "dev:")) {
         return unique_fd{unix_open(name, O_RDWR | O_CLOEXEC)};
-    } else if (ConsumePrefix(&name, "jdwp:")) {
+    } else if (android::base::ConsumePrefix(&name, "jdwp:")) {
         pid_t pid;
         if (!ParseUint(&pid, name)) {
             return unique_fd{};
         }
         return create_jdwp_connection_fd(pid);
-    } else if (ConsumePrefix(&name, "shell")) {
+    } else if (android::base::ConsumePrefix(&name, "shell")) {
         return ShellService(name, transport);
-    } else if (ConsumePrefix(&name, "exec:")) {
+    } else if (android::base::ConsumePrefix(&name, "exec:")) {
         return StartSubprocess(std::string(name), nullptr, SubprocessType::kRaw,
                                SubprocessProtocol::kNone);
     } else if (name.starts_with("sync:")) {
         return create_service_thread("sync", file_sync_service);
-    } else if (ConsumePrefix(&name, "reverse:")) {
+    } else if (android::base::ConsumePrefix(&name, "reverse:")) {
         return reverse_service(name, transport);
     } else if (name == "reconnect") {
         return create_service_thread(
diff --git a/adb/daemon/set_verity_enable_state_service.cpp b/adb/daemon/set_verity_enable_state_service.cpp
deleted file mode 100644
index 889229f..0000000
--- a/adb/daemon/set_verity_enable_state_service.cpp
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define TRACE_TAG ADB
-
-#include "set_verity_enable_state_service.h"
-#include "sysdeps.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <libavb_user/libavb_user.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-
-#include <android-base/properties.h>
-#include <android-base/stringprintf.h>
-#include <fs_mgr.h>
-#include <fs_mgr_overlayfs.h>
-#include <fstab/fstab.h>
-#include <log/log_properties.h>
-
-#include "adb.h"
-#include "adb_io.h"
-#include "adb_unique_fd.h"
-
-#include "fec/io.h"
-
-#ifdef ALLOW_ADBD_DISABLE_VERITY
-static const bool kAllowDisableVerity = true;
-#else
-static const bool kAllowDisableVerity = false;
-#endif
-
-void suggest_run_adb_root(int fd) {
-    if (getuid() != 0) WriteFdExactly(fd, "Maybe run adb root?\n");
-}
-
-static bool make_block_device_writable(const std::string& dev) {
-    unique_fd fd(unix_open(dev, O_RDONLY | O_CLOEXEC));
-    if (fd == -1) {
-        return false;
-    }
-
-    int OFF = 0;
-    bool result = (ioctl(fd, BLKROSET, &OFF) != -1);
-    return result;
-}
-
-/* Turn verity on/off */
-static bool set_verity_enabled_state(int fd, const char* block_device, const char* mount_point,
-                                     bool enable) {
-    if (!make_block_device_writable(block_device)) {
-        WriteFdFmt(fd, "Could not make block device %s writable (%s).\n",
-                   block_device, strerror(errno));
-        return false;
-    }
-
-    fec::io fh(block_device, O_RDWR);
-
-    if (!fh) {
-        WriteFdFmt(fd, "Could not open block device %s (%s).\n", block_device, strerror(errno));
-        suggest_run_adb_root(fd);
-        return false;
-    }
-
-    fec_verity_metadata metadata;
-
-    if (!fh.get_verity_metadata(metadata)) {
-        WriteFdExactly(fd, "Couldn't find verity metadata!\n");
-        return false;
-    }
-
-    if (!enable && metadata.disabled) {
-        WriteFdFmt(fd, "Verity already disabled on %s\n", mount_point);
-        return false;
-    }
-
-    if (enable && !metadata.disabled) {
-        WriteFdFmt(fd, "Verity already enabled on %s\n", mount_point);
-        return false;
-    }
-
-    if (!fh.set_verity_status(enable)) {
-        WriteFdFmt(fd, "Could not set verity %s flag on device %s with error %s\n",
-                   enable ? "enabled" : "disabled",
-                   block_device, strerror(errno));
-        return false;
-    }
-
-    auto change = false;
-    errno = 0;
-    if (enable ? fs_mgr_overlayfs_teardown(mount_point, &change)
-               : fs_mgr_overlayfs_setup(nullptr, mount_point, &change)) {
-        if (change) {
-            WriteFdFmt(fd, "%s overlayfs for %s\n", enable ? "disabling" : "using", mount_point);
-        }
-    } else if (errno) {
-        WriteFdFmt(fd, "Overlayfs %s for %s failed with error %s\n", enable ? "teardown" : "setup",
-                   mount_point, strerror(errno));
-    }
-    WriteFdFmt(fd, "Verity %s on %s\n", enable ? "enabled" : "disabled", mount_point);
-    return true;
-}
-
-/* Helper function to get A/B suffix, if any. If the device isn't
- * using A/B the empty string is returned. Otherwise either "_a",
- * "_b", ... is returned.
- */
-static std::string get_ab_suffix() {
-    return android::base::GetProperty("ro.boot.slot_suffix", "");
-}
-
-static bool is_avb_device_locked() {
-    return android::base::GetProperty("ro.boot.vbmeta.device_state", "") == "locked";
-}
-
-static bool overlayfs_setup(int fd, bool enable) {
-    auto change = false;
-    errno = 0;
-    if (enable ? fs_mgr_overlayfs_teardown(nullptr, &change)
-               : fs_mgr_overlayfs_setup(nullptr, nullptr, &change)) {
-        if (change) {
-            WriteFdFmt(fd, "%s overlayfs\n", enable ? "disabling" : "using");
-        }
-    } else if (errno) {
-        WriteFdFmt(fd, "Overlayfs %s failed with error %s\n", enable ? "teardown" : "setup",
-                   strerror(errno));
-        suggest_run_adb_root(fd);
-    }
-    return change;
-}
-
-/* Use AVB to turn verity on/off */
-static bool set_avb_verity_enabled_state(int fd, AvbOps* ops, bool enable_verity) {
-    std::string ab_suffix = get_ab_suffix();
-    bool verity_enabled;
-
-    if (is_avb_device_locked()) {
-        WriteFdExactly(fd, "Device is locked. Please unlock the device first\n");
-        return false;
-    }
-
-    if (!avb_user_verity_get(ops, ab_suffix.c_str(), &verity_enabled)) {
-        WriteFdExactly(fd, "Error getting verity state. Try adb root first?\n");
-        return false;
-    }
-
-    if ((verity_enabled && enable_verity) || (!verity_enabled && !enable_verity)) {
-        WriteFdFmt(fd, "verity is already %s\n", verity_enabled ? "enabled" : "disabled");
-        return false;
-    }
-
-    if (!avb_user_verity_set(ops, ab_suffix.c_str(), enable_verity)) {
-        WriteFdExactly(fd, "Error setting verity\n");
-        return false;
-    }
-
-    overlayfs_setup(fd, enable_verity);
-    WriteFdFmt(fd, "Successfully %s verity\n", enable_verity ? "enabled" : "disabled");
-    return true;
-}
-
-void set_verity_enabled_state_service(unique_fd fd, bool enable) {
-    bool any_changed = false;
-
-    // Figure out if we're using VB1.0 or VB2.0 (aka AVB) - by
-    // contract, androidboot.vbmeta.digest is set by the bootloader
-    // when using AVB).
-    bool using_avb = !android::base::GetProperty("ro.boot.vbmeta.digest", "").empty();
-
-    // If using AVB, dm-verity is used on any build so we want it to
-    // be possible to disable/enable on any build (except USER). For
-    // VB1.0 dm-verity is only enabled on certain builds.
-    if (!using_avb) {
-        if (!kAllowDisableVerity) {
-            WriteFdFmt(fd.get(), "%s-verity only works for userdebug builds\n",
-                       enable ? "enable" : "disable");
-        }
-
-        if (!android::base::GetBoolProperty("ro.secure", false)) {
-            overlayfs_setup(fd, enable);
-            WriteFdExactly(fd.get(), "verity not enabled - ENG build\n");
-            return;
-        }
-    }
-
-    // Should never be possible to disable dm-verity on a USER build
-    // regardless of using AVB or VB1.0.
-    if (!__android_log_is_debuggable()) {
-        WriteFdExactly(fd.get(), "verity cannot be disabled/enabled - USER build\n");
-        return;
-    }
-
-    if (using_avb) {
-        // Yep, the system is using AVB.
-        AvbOps* ops = avb_ops_user_new();
-        if (ops == nullptr) {
-            WriteFdExactly(fd.get(), "Error getting AVB ops\n");
-            return;
-        }
-        if (set_avb_verity_enabled_state(fd.get(), ops, enable)) {
-            any_changed = true;
-        }
-        avb_ops_user_free(ops);
-    } else {
-        // Not using AVB - assume VB1.0.
-
-        // read all fstab entries at once from all sources
-        android::fs_mgr::Fstab fstab;
-        if (!android::fs_mgr::ReadDefaultFstab(&fstab)) {
-            WriteFdExactly(fd.get(), "Failed to read fstab\n");
-            suggest_run_adb_root(fd.get());
-            return;
-        }
-
-        // Loop through entries looking for ones that verity manages.
-        for (const auto& entry : fstab) {
-            if (entry.fs_mgr_flags.verify) {
-                if (set_verity_enabled_state(fd.get(), entry.blk_device.c_str(),
-                                             entry.mount_point.c_str(), enable)) {
-                    any_changed = true;
-                }
-            }
-        }
-    }
-    if (!any_changed) any_changed = overlayfs_setup(fd, enable);
-
-    if (any_changed) {
-        WriteFdExactly(fd.get(), "Now reboot your device for settings to take effect\n");
-    }
-}
diff --git a/adb/daemon/set_verity_enable_state_service.h b/adb/daemon/set_verity_enable_state_service.h
deleted file mode 100644
index c0ed98e..0000000
--- a/adb/daemon/set_verity_enable_state_service.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "adb_unique_fd.h"
-
-#if defined(__ANDROID__)
-void set_verity_enabled_state_service(unique_fd fd, bool enable);
-#endif
diff --git a/adb/daemon/shell_service.cpp b/adb/daemon/shell_service.cpp
index 3c8f393..fbfae1e 100644
--- a/adb/daemon/shell_service.cpp
+++ b/adb/daemon/shell_service.cpp
@@ -85,7 +85,6 @@
 #include <paths.h>
 #include <pty.h>
 #include <pwd.h>
-#include <sys/select.h>
 #include <termios.h>
 
 #include <memory>
@@ -108,13 +107,14 @@
 #include "adb_trace.h"
 #include "adb_unique_fd.h"
 #include "adb_utils.h"
+#include "daemon/logging.h"
 #include "security_log_tags.h"
 #include "shell_protocol.h"
 
 namespace {
 
 // Reads from |fd| until close or failure.
-std::string ReadAll(int fd) {
+std::string ReadAll(borrowed_fd fd) {
     char buffer[512];
     std::string received;
 
@@ -141,6 +141,20 @@
     return true;
 }
 
+struct SubprocessPollfds {
+    adb_pollfd pfds[3];
+
+    adb_pollfd* data() { return pfds; }
+    size_t size() { return 3; }
+
+    adb_pollfd* begin() { return pfds; }
+    adb_pollfd* end() { return pfds + size(); }
+
+    adb_pollfd& stdinout_pfd() { return pfds[0]; }
+    adb_pollfd& stderr_pfd() { return pfds[1]; }
+    adb_pollfd& protocol_pfd() { return pfds[2]; }
+};
+
 class Subprocess {
   public:
     Subprocess(std::string command, const char* terminal_type, SubprocessType type,
@@ -176,8 +190,7 @@
     void PassDataStreams();
     void WaitForExit();
 
-    unique_fd* SelectLoop(fd_set* master_read_set_ptr,
-                          fd_set* master_write_set_ptr);
+    unique_fd* PollLoop(SubprocessPollfds* pfds);
 
     // Input/output stream handlers. Success returns nullptr, failure returns
     // a pointer to the failed FD.
@@ -222,7 +235,7 @@
 bool Subprocess::ForkAndExec(std::string* error) {
     unique_fd child_stdinout_sfd, child_stderr_sfd;
     unique_fd parent_error_sfd, child_error_sfd;
-    char pts_name[PATH_MAX];
+    const char* pts_name = nullptr;
 
     if (command_.empty()) {
         __android_log_security_bswrite(SEC_TAG_ADB_SHELL_INTERACTIVE, "");
@@ -283,10 +296,22 @@
     cenv.push_back(nullptr);
 
     if (type_ == SubprocessType::kPty) {
-        int fd;
-        pid_ = forkpty(&fd, pts_name, nullptr, nullptr);
+        unique_fd pty_master(posix_openpt(O_RDWR | O_NOCTTY | O_CLOEXEC));
+        if (pty_master == -1) {
+            *error =
+                    android::base::StringPrintf("failed to create pty master: %s", strerror(errno));
+            return false;
+        }
+        if (unlockpt(pty_master.get()) != 0) {
+            *error = android::base::StringPrintf("failed to unlockpt pty master: %s",
+                                                 strerror(errno));
+            return false;
+        }
+
+        pid_ = fork();
+        pts_name = ptsname(pty_master.get());
         if (pid_ > 0) {
-          stdinout_sfd_.reset(fd);
+            stdinout_sfd_ = std::move(pty_master);
         }
     } else {
         if (!CreateSocketpair(&stdinout_sfd_, &child_stdinout_sfd)) {
@@ -317,9 +342,10 @@
             child_stdinout_sfd.reset(OpenPtyChildFd(pts_name, &child_error_sfd));
         }
 
-        dup2(child_stdinout_sfd, STDIN_FILENO);
-        dup2(child_stdinout_sfd, STDOUT_FILENO);
-        dup2(child_stderr_sfd != -1 ? child_stderr_sfd : child_stdinout_sfd, STDERR_FILENO);
+        dup2(child_stdinout_sfd.get(), STDIN_FILENO);
+        dup2(child_stdinout_sfd.get(), STDOUT_FILENO);
+        dup2(child_stderr_sfd != -1 ? child_stderr_sfd.get() : child_stdinout_sfd.get(),
+             STDERR_FILENO);
 
         // exec doesn't trigger destructors, close the FDs manually.
         stdinout_sfd_.reset(-1);
@@ -415,7 +441,7 @@
         }
     } else {
         // Raw protocol doesn't support multiple output streams, so combine stdout and stderr.
-        child_stderr_sfd.reset(dup(child_stdinout_sfd));
+        child_stderr_sfd.reset(dup(child_stdinout_sfd.get()));
     }
 
     D("execinprocess: stdin/stdout FD = %d, stderr FD = %d", stdinout_sfd_.get(),
@@ -532,23 +558,23 @@
     }
 
     // Start by trying to read from the protocol FD, stdout, and stderr.
-    fd_set master_read_set, master_write_set;
-    FD_ZERO(&master_read_set);
-    FD_ZERO(&master_write_set);
-    for (unique_fd* sfd : {&protocol_sfd_, &stdinout_sfd_, &stderr_sfd_}) {
-        if (*sfd != -1) {
-            FD_SET(*sfd, &master_read_set);
-        }
-    }
+    SubprocessPollfds pfds;
+    pfds.stdinout_pfd() = {.fd = stdinout_sfd_.get(), .events = POLLIN};
+    pfds.stderr_pfd() = {.fd = stderr_sfd_.get(), .events = POLLIN};
+    pfds.protocol_pfd() = {.fd = protocol_sfd_.get(), .events = POLLIN};
 
     // Pass data until the protocol FD or both the subprocess pipes die, at
     // which point we can't pass any more data.
     while (protocol_sfd_ != -1 && (stdinout_sfd_ != -1 || stderr_sfd_ != -1)) {
-        unique_fd* dead_sfd = SelectLoop(&master_read_set, &master_write_set);
+        unique_fd* dead_sfd = PollLoop(&pfds);
         if (dead_sfd) {
             D("closing FD %d", dead_sfd->get());
-            FD_CLR(*dead_sfd, &master_read_set);
-            FD_CLR(*dead_sfd, &master_write_set);
+            auto it = std::find_if(pfds.begin(), pfds.end(), [=](const adb_pollfd& pfd) {
+                return pfd.fd == dead_sfd->get();
+            });
+            CHECK(it != pfds.end());
+            it->fd = -1;
+            it->events = 0;
             if (dead_sfd == &protocol_sfd_) {
                 // Using SIGHUP is a decent general way to indicate that the
                 // controlling process is going away. If specific signals are
@@ -570,29 +596,19 @@
     }
 }
 
-namespace {
-
-inline bool ValidAndInSet(const unique_fd& sfd, fd_set* set) {
-    return sfd != -1 && FD_ISSET(sfd, set);
-}
-
-}   // namespace
-
-unique_fd* Subprocess::SelectLoop(fd_set* master_read_set_ptr,
-                                  fd_set* master_write_set_ptr) {
-    fd_set read_set, write_set;
-    int select_n = std::max(std::max(protocol_sfd_, stdinout_sfd_), stderr_sfd_) + 1;
+unique_fd* Subprocess::PollLoop(SubprocessPollfds* pfds) {
     unique_fd* dead_sfd = nullptr;
+    adb_pollfd& stdinout_pfd = pfds->stdinout_pfd();
+    adb_pollfd& stderr_pfd = pfds->stderr_pfd();
+    adb_pollfd& protocol_pfd = pfds->protocol_pfd();
 
-    // Keep calling select() and passing data until an FD closes/errors.
+    // Keep calling poll() and passing data until an FD closes/errors.
     while (!dead_sfd) {
-        memcpy(&read_set, master_read_set_ptr, sizeof(read_set));
-        memcpy(&write_set, master_write_set_ptr, sizeof(write_set));
-        if (select(select_n, &read_set, &write_set, nullptr, nullptr) < 0) {
+        if (adb_poll(pfds->data(), pfds->size(), -1) < 0) {
             if (errno == EINTR) {
                 continue;
             } else {
-                PLOG(ERROR) << "select failed, closing subprocess pipes";
+                PLOG(ERROR) << "poll failed, closing subprocess pipes";
                 stdinout_sfd_.reset(-1);
                 stderr_sfd_.reset(-1);
                 return nullptr;
@@ -600,34 +616,47 @@
         }
 
         // Read stdout, write to protocol FD.
-        if (ValidAndInSet(stdinout_sfd_, &read_set)) {
+        if (stdinout_pfd.fd != -1 && (stdinout_pfd.revents & POLLIN)) {
             dead_sfd = PassOutput(&stdinout_sfd_, ShellProtocol::kIdStdout);
         }
 
         // Read stderr, write to protocol FD.
-        if (!dead_sfd && ValidAndInSet(stderr_sfd_, &read_set)) {
+        if (!dead_sfd && stderr_pfd.fd != 1 && (stderr_pfd.revents & POLLIN)) {
             dead_sfd = PassOutput(&stderr_sfd_, ShellProtocol::kIdStderr);
         }
 
         // Read protocol FD, write to stdin.
-        if (!dead_sfd && ValidAndInSet(protocol_sfd_, &read_set)) {
+        if (!dead_sfd && protocol_pfd.fd != -1 && (protocol_pfd.revents & POLLIN)) {
             dead_sfd = PassInput();
             // If we didn't finish writing, block on stdin write.
             if (input_bytes_left_) {
-                FD_CLR(protocol_sfd_, master_read_set_ptr);
-                FD_SET(stdinout_sfd_, master_write_set_ptr);
+                protocol_pfd.events &= ~POLLIN;
+                stdinout_pfd.events |= POLLOUT;
             }
         }
 
         // Continue writing to stdin; only happens if a previous write blocked.
-        if (!dead_sfd && ValidAndInSet(stdinout_sfd_, &write_set)) {
+        if (!dead_sfd && stdinout_pfd.fd != -1 && (stdinout_pfd.revents & POLLOUT)) {
             dead_sfd = PassInput();
             // If we finished writing, go back to blocking on protocol read.
             if (!input_bytes_left_) {
-                FD_SET(protocol_sfd_, master_read_set_ptr);
-                FD_CLR(stdinout_sfd_, master_write_set_ptr);
+                protocol_pfd.events |= POLLIN;
+                stdinout_pfd.events &= ~POLLOUT;
             }
         }
+
+        // After handling all of the events we've received, check to see if any fds have died.
+        if (stdinout_pfd.revents & (POLLHUP | POLLRDHUP | POLLERR | POLLNVAL)) {
+            return &stdinout_sfd_;
+        }
+
+        if (stderr_pfd.revents & (POLLHUP | POLLRDHUP | POLLERR | POLLNVAL)) {
+            return &stderr_sfd_;
+        }
+
+        if (protocol_pfd.revents & (POLLHUP | POLLRDHUP | POLLERR | POLLNVAL)) {
+            return &protocol_sfd_;
+        }
     }  // while (!dead_sfd)
 
     return dead_sfd;
@@ -639,7 +668,7 @@
         if (!input_->Read()) {
             // Read() uses ReadFdExactly() which sets errno to 0 on EOF.
             if (errno != 0) {
-                PLOG(ERROR) << "error reading protocol FD " << protocol_sfd_;
+                PLOG(ERROR) << "error reading protocol FD " << protocol_sfd_.get();
             }
             return &protocol_sfd_;
         }
@@ -655,7 +684,7 @@
                         ws.ws_col = cols;
                         ws.ws_xpixel = x_pixels;
                         ws.ws_ypixel = y_pixels;
-                        ioctl(stdinout_sfd_, TIOCSWINSZ, &ws);
+                        ioctl(stdinout_sfd_.get(), TIOCSWINSZ, &ws);
                     }
                     break;
                 case ShellProtocol::kIdStdin:
@@ -666,8 +695,7 @@
                         if (adb_shutdown(stdinout_sfd_, SHUT_WR) == 0) {
                             return nullptr;
                         }
-                        PLOG(ERROR) << "failed to shutdown writes to FD "
-                                    << stdinout_sfd_;
+                        PLOG(ERROR) << "failed to shutdown writes to FD " << stdinout_sfd_.get();
                         return &stdinout_sfd_;
                     } else {
                         // PTYs can't close just input, so rather than close the
@@ -688,7 +716,7 @@
         int bytes = adb_write(stdinout_sfd_, input_->data() + index, input_bytes_left_);
         if (bytes == 0 || (bytes < 0 && errno != EAGAIN)) {
             if (bytes < 0) {
-                PLOG(ERROR) << "error reading stdin FD " << stdinout_sfd_;
+                PLOG(ERROR) << "error reading stdin FD " << stdinout_sfd_.get();
             }
             // stdin is done, mark this packet as finished and we'll just start
             // dumping any further data received from the protocol FD.
@@ -708,14 +736,14 @@
         // read() returns EIO if a PTY closes; don't report this as an error,
         // it just means the subprocess completed.
         if (bytes < 0 && !(type_ == SubprocessType::kPty && errno == EIO)) {
-            PLOG(ERROR) << "error reading output FD " << *sfd;
+            PLOG(ERROR) << "error reading output FD " << sfd->get();
         }
         return sfd;
     }
 
     if (bytes > 0 && !output_->Write(id, bytes)) {
         if (errno != 0) {
-            PLOG(ERROR) << "error reading protocol FD " << protocol_sfd_;
+            PLOG(ERROR) << "error reading protocol FD " << protocol_sfd_.get();
         }
         return &protocol_sfd_;
     }
@@ -733,14 +761,14 @@
             D("post waitpid (pid=%d) status=%04x", pid_, status);
             if (WIFSIGNALED(status)) {
                 exit_code = 0x80 | WTERMSIG(status);
-                D("subprocess killed by signal %d", WTERMSIG(status));
+                ADB_LOG(Shell) << "subprocess " << pid_ << " killed by signal " << WTERMSIG(status);
                 break;
             } else if (!WIFEXITED(status)) {
                 D("subprocess didn't exit");
                 break;
             } else if (WEXITSTATUS(status) >= 0) {
                 exit_code = WEXITSTATUS(status);
-                D("subprocess exit code = %d", WEXITSTATUS(status));
+                ADB_LOG(Shell) << "subprocess " << pid_ << " exited with status " << exit_code;
                 break;
             }
         }
diff --git a/adb/daemon/shell_service.h b/adb/daemon/shell_service.h
index 3abd958..030228c 100644
--- a/adb/daemon/shell_service.h
+++ b/adb/daemon/shell_service.h
@@ -48,7 +48,7 @@
 // Sets up in/out and error streams to emulate shell-like behavior.
 //
 // Returns an open FD connected to the thread or -1 on failure.
-using Command = int(std::string_view args, int in, int out, int err);
+using Command = int(std::string_view args, borrowed_fd in, borrowed_fd out, borrowed_fd err);
 unique_fd StartCommandInProcess(std::string name, Command command, SubprocessProtocol protocol);
 
 // Create a pipe containing the error.
diff --git a/adb/daemon/shell_service_test.cpp b/adb/daemon/shell_service_test.cpp
index dc79d12..cdd8dbe 100644
--- a/adb/daemon/shell_service_test.cpp
+++ b/adb/daemon/shell_service_test.cpp
@@ -77,7 +77,7 @@
 namespace {
 
 // Reads raw data from |fd| until it closes or errors.
-std::string ReadRaw(int fd) {
+std::string ReadRaw(borrowed_fd fd) {
     char buffer[1024];
     char *cur_ptr = buffer, *end_ptr = buffer + sizeof(buffer);
 
@@ -93,12 +93,12 @@
 // Reads shell protocol data from |fd| until it closes or errors. Fills
 // |stdout| and |stderr| with their respective data, and returns the exit code
 // read from the protocol or -1 if an exit code packet was not received.
-int ReadShellProtocol(int fd, std::string* stdout, std::string* stderr) {
+int ReadShellProtocol(borrowed_fd fd, std::string* stdout, std::string* stderr) {
     int exit_code = -1;
     stdout->clear();
     stderr->clear();
 
-    auto protocol = std::make_unique<ShellProtocol>(fd);
+    auto protocol = std::make_unique<ShellProtocol>(fd.get());
     while (protocol->Read()) {
         switch (protocol->id()) {
             case ShellProtocol::kIdStdout:
diff --git a/adb/daemon/transport_qemu.cpp b/adb/daemon/transport_qemu.cpp
index aa760bc..e458cea 100644
--- a/adb/daemon/transport_qemu.cpp
+++ b/adb/daemon/transport_qemu.cpp
@@ -18,6 +18,7 @@
 #include <qemu_pipe.h>
 
 #define TRACE_TAG TRANSPORT
+#include "socket_spec.h"
 #include "sysdeps.h"
 #include "transport.h"
 
@@ -55,7 +56,7 @@
  *   the transport registration is completed. That's why we need to send the
  *   'start' request after the transport is registered.
  */
-void qemu_socket_thread(int port) {
+void qemu_socket_thread(std::string_view addr) {
     /* 'accept' request to the adb QEMUD service. */
     static const char _accept_req[] = "accept";
     /* 'start' request to the adb QEMUD service. */
@@ -69,6 +70,12 @@
     adb_thread_setname("qemu socket");
     D("transport: qemu_socket_thread() starting");
 
+    std::string error;
+    int port = get_host_socket_spec_port(addr, &error);
+    if (port == -1) {
+        port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
+    }
+
     /* adb QEMUD service connection request. */
     snprintf(con_name, sizeof(con_name), "pipe:qemud:adb:%d", port);
 
@@ -78,7 +85,7 @@
         /* This could be an older version of the emulator, that doesn't
          * implement adb QEMUD service. Fall back to the old TCP way. */
         D("adb service is not available. Falling back to TCP socket.");
-        std::thread(server_socket_thread, tcp_listen_inaddr_any, port).detach();
+        std::thread(server_socket_thread, adb_listen, addr).detach();
         return;
     }
 
@@ -98,8 +105,9 @@
                  * exchange. */
                 std::string serial = android::base::StringPrintf("host-%d", fd.get());
                 WriteFdExactly(fd.get(), _start_req, strlen(_start_req));
-                register_socket_transport(std::move(fd), std::move(serial), port, 1,
-                                          [](atransport*) { return ReconnectResult::Abort; });
+                register_socket_transport(
+                        std::move(fd), std::move(serial), port, 1,
+                        [](atransport*) { return ReconnectResult::Abort; }, false);
             }
 
             /* Prepare for accepting of the next ADB host connection. */
diff --git a/adb/daemon/usb.cpp b/adb/daemon/usb.cpp
index 1abae87..a663871 100644
--- a/adb/daemon/usb.cpp
+++ b/adb/daemon/usb.cpp
@@ -19,6 +19,7 @@
 #include "sysdeps.h"
 
 #include <errno.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -44,19 +45,15 @@
 #include <android-base/properties.h>
 #include <android-base/thread_annotations.h>
 
-#include <adbd/usb.h>
-
 #include "adb_unique_fd.h"
 #include "adb_utils.h"
+#include "daemon/usb_ffs.h"
 #include "sysdeps/chrono.h"
 #include "transport.h"
 #include "types.h"
 
 using android::base::StringPrintf;
 
-// We can't find out whether we have support for AIO on ffs endpoints until we submit a read.
-static std::optional<bool> gFfsAioSupported;
-
 // Not all USB controllers support operations larger than 16k, so don't go above that.
 // Also, each submitted operation does an allocation in the kernel of that size, so we want to
 // minimize our queue depth while still maintaining a deep enough queue to keep the USB stack fed.
@@ -117,14 +114,18 @@
     }
 };
 
+template <class Payload>
 struct IoBlock {
     bool pending = false;
     struct iocb control = {};
-    std::shared_ptr<Block> payload;
+    Payload payload;
 
     TransferId id() const { return TransferId::from_value(control.aio_data); }
 };
 
+using IoReadBlock = IoBlock<Block>;
+using IoWriteBlock = IoBlock<std::shared_ptr<Block>>;
+
 struct ScopedAioContext {
     ScopedAioContext() = default;
     ~ScopedAioContext() { reset(); }
@@ -208,16 +209,17 @@
 
     virtual bool Write(std::unique_ptr<apacket> packet) override final {
         LOG(DEBUG) << "USB write: " << dump_header(&packet->msg);
-        Block header(sizeof(packet->msg));
-        memcpy(header.data(), &packet->msg, sizeof(packet->msg));
+        auto header = std::make_shared<Block>(sizeof(packet->msg));
+        memcpy(header->data(), &packet->msg, sizeof(packet->msg));
 
         std::lock_guard<std::mutex> lock(write_mutex_);
-        write_requests_.push_back(CreateWriteBlock(std::move(header), next_write_id_++));
+        write_requests_.push_back(
+                CreateWriteBlock(std::move(header), 0, sizeof(packet->msg), next_write_id_++));
         if (!packet->payload.empty()) {
             // The kernel attempts to allocate a contiguous block of memory for each write,
             // which can fail if the write is large and the kernel heap is fragmented.
             // Split large writes into smaller chunks to avoid this.
-            std::shared_ptr<Block> payload = std::make_shared<Block>(std::move(packet->payload));
+            auto payload = std::make_shared<Block>(std::move(packet->payload));
             size_t offset = 0;
             size_t len = payload->size();
 
@@ -229,7 +231,14 @@
                 offset += write_size;
             }
         }
-        SubmitWrites();
+
+        // Wake up the worker thread to submit writes.
+        uint64_t notify = 1;
+        ssize_t rc = adb_write(worker_event_fd_.get(), &notify, sizeof(notify));
+        if (rc < 0) {
+            PLOG(FATAL) << "failed to notify worker eventfd to submit writes";
+        }
+
         return true;
     }
 
@@ -255,6 +264,12 @@
         CHECK_EQ(static_cast<size_t>(rc), sizeof(notify));
     }
 
+    virtual bool DoTlsHandshake(RSA* key, std::string* auth_key) override final {
+        // TODO: support TLS for usb connections.
+        LOG(FATAL) << "Not supported yet.";
+        return false;
+    }
+
   private:
     void StartMonitor() {
         // This is a bit of a mess.
@@ -270,6 +285,7 @@
 
         monitor_thread_ = std::thread([this]() {
             adb_thread_setname("UsbFfs-monitor");
+            LOG(INFO) << "UsbFfs-monitor thread spawned";
 
             bool bound = false;
             bool enabled = false;
@@ -415,6 +431,8 @@
         worker_started_ = true;
         worker_thread_ = std::thread([this]() {
             adb_thread_setname("UsbFfs-worker");
+            LOG(INFO) << "UsbFfs-worker thread spawned";
+
             for (size_t i = 0; i < kUsbReadQueueDepth; ++i) {
                 read_requests_[i] = CreateReadBlock(next_read_id_++);
                 if (!SubmitRead(&read_requests_[i])) {
@@ -432,6 +450,9 @@
                 }
 
                 ReadEvents();
+
+                std::lock_guard<std::mutex> lock(write_mutex_);
+                SubmitWrites();
             }
         });
     }
@@ -464,16 +485,20 @@
         worker_thread_.join();
     }
 
-    void PrepareReadBlock(IoBlock* block, uint64_t id) {
+    void PrepareReadBlock(IoReadBlock* block, uint64_t id) {
         block->pending = false;
-        block->payload = std::make_shared<Block>(kUsbReadSize);
+        if (block->payload.capacity() >= kUsbReadSize) {
+            block->payload.resize(kUsbReadSize);
+        } else {
+            block->payload = Block(kUsbReadSize);
+        }
         block->control.aio_data = static_cast<uint64_t>(TransferId::read(id));
-        block->control.aio_buf = reinterpret_cast<uintptr_t>(block->payload->data());
-        block->control.aio_nbytes = block->payload->size();
+        block->control.aio_buf = reinterpret_cast<uintptr_t>(block->payload.data());
+        block->control.aio_nbytes = block->payload.size();
     }
 
-    IoBlock CreateReadBlock(uint64_t id) {
-        IoBlock block;
+    IoReadBlock CreateReadBlock(uint64_t id) {
+        IoReadBlock block;
         PrepareReadBlock(&block, id);
         block.control.aio_rw_flags = 0;
         block.control.aio_lio_opcode = IOCB_CMD_PREAD;
@@ -509,50 +534,62 @@
             }
 
             if (id.direction == TransferDirection::READ) {
-                HandleRead(id, event.res);
+                if (!HandleRead(id, event.res)) {
+                    return;
+                }
             } else {
                 HandleWrite(id);
             }
         }
     }
 
-    void HandleRead(TransferId id, int64_t size) {
+    bool HandleRead(TransferId id, int64_t size) {
         uint64_t read_idx = id.id % kUsbReadQueueDepth;
-        IoBlock* block = &read_requests_[read_idx];
+        IoReadBlock* block = &read_requests_[read_idx];
         block->pending = false;
-        block->payload->resize(size);
+        block->payload.resize(size);
 
         // Notification for completed reads can be received out of order.
         if (block->id().id != needed_read_id_) {
             LOG(VERBOSE) << "read " << block->id().id << " completed while waiting for "
                          << needed_read_id_;
-            return;
+            return true;
         }
 
         for (uint64_t id = needed_read_id_;; ++id) {
             size_t read_idx = id % kUsbReadQueueDepth;
-            IoBlock* current_block = &read_requests_[read_idx];
+            IoReadBlock* current_block = &read_requests_[read_idx];
             if (current_block->pending) {
                 break;
             }
-            ProcessRead(current_block);
+            if (!ProcessRead(current_block)) {
+                return false;
+            }
             ++needed_read_id_;
         }
+
+        return true;
     }
 
-    void ProcessRead(IoBlock* block) {
-        if (!block->payload->empty()) {
+    bool ProcessRead(IoReadBlock* block) {
+        if (!block->payload.empty()) {
             if (!incoming_header_.has_value()) {
-                CHECK_EQ(sizeof(amessage), block->payload->size());
-                amessage msg;
-                memcpy(&msg, block->payload->data(), sizeof(amessage));
+                if (block->payload.size() != sizeof(amessage)) {
+                    HandleError("received packet of unexpected length while reading header");
+                    return false;
+                }
+                amessage& msg = incoming_header_.emplace();
+                memcpy(&msg, block->payload.data(), sizeof(msg));
                 LOG(DEBUG) << "USB read:" << dump_header(&msg);
                 incoming_header_ = msg;
             } else {
                 size_t bytes_left = incoming_header_->data_length - incoming_payload_.size();
-                Block payload = std::move(*block->payload);
-                CHECK_LE(payload.size(), bytes_left);
-                incoming_payload_.append(std::make_unique<Block>(std::move(payload)));
+                Block payload = std::move(block->payload);
+                if (block->payload.size() > bytes_left) {
+                    HandleError("received too many bytes while waiting for payload");
+                    return false;
+                }
+                incoming_payload_.append(std::move(payload));
             }
 
             if (incoming_header_->data_length == incoming_payload_.size()) {
@@ -560,33 +597,31 @@
                 packet->msg = *incoming_header_;
 
                 // TODO: Make apacket contain an IOVector so we don't have to coalesce.
-                packet->payload = incoming_payload_.coalesce();
+                packet->payload = std::move(incoming_payload_).coalesce();
                 read_callback_(this, std::move(packet));
 
                 incoming_header_.reset();
-                incoming_payload_.clear();
+                // reuse the capacity of the incoming payload while we can.
+                auto free_block = incoming_payload_.clear();
+                if (block->payload.capacity() == 0) {
+                    block->payload = std::move(free_block);
+                }
             }
         }
 
         PrepareReadBlock(block, block->id().id + kUsbReadQueueDepth);
         SubmitRead(block);
+        return true;
     }
 
-    bool SubmitRead(IoBlock* block) {
+    bool SubmitRead(IoReadBlock* block) {
         block->pending = true;
         struct iocb* iocb = &block->control;
         if (io_submit(aio_context_.get(), 1, &iocb) != 1) {
-            if (errno == EINVAL && !gFfsAioSupported.has_value()) {
-                HandleError("failed to submit first read, AIO on FFS not supported");
-                gFfsAioSupported = false;
-                return false;
-            }
-
             HandleError(StringPrintf("failed to submit read: %s", strerror(errno)));
             return false;
         }
 
-        gFfsAioSupported = true;
         return true;
     }
 
@@ -594,38 +629,35 @@
         std::lock_guard<std::mutex> lock(write_mutex_);
         auto it =
                 std::find_if(write_requests_.begin(), write_requests_.end(), [id](const auto& req) {
-                    return static_cast<uint64_t>(req->id()) == static_cast<uint64_t>(id);
+                    return static_cast<uint64_t>(req.id()) == static_cast<uint64_t>(id);
                 });
         CHECK(it != write_requests_.end());
 
         write_requests_.erase(it);
         size_t outstanding_writes = --writes_submitted_;
         LOG(DEBUG) << "USB write: reaped, down to " << outstanding_writes;
-
-        SubmitWrites();
     }
 
-    std::unique_ptr<IoBlock> CreateWriteBlock(std::shared_ptr<Block> payload, size_t offset,
-                                              size_t len, uint64_t id) {
-        auto block = std::make_unique<IoBlock>();
-        block->payload = std::move(payload);
-        block->control.aio_data = static_cast<uint64_t>(TransferId::write(id));
-        block->control.aio_rw_flags = 0;
-        block->control.aio_lio_opcode = IOCB_CMD_PWRITE;
-        block->control.aio_reqprio = 0;
-        block->control.aio_fildes = write_fd_.get();
-        block->control.aio_buf = reinterpret_cast<uintptr_t>(block->payload->data() + offset);
-        block->control.aio_nbytes = len;
-        block->control.aio_offset = 0;
-        block->control.aio_flags = IOCB_FLAG_RESFD;
-        block->control.aio_resfd = worker_event_fd_.get();
+    IoWriteBlock CreateWriteBlock(std::shared_ptr<Block> payload, size_t offset, size_t len,
+                                  uint64_t id) {
+        auto block = IoWriteBlock();
+        block.payload = std::move(payload);
+        block.control.aio_data = static_cast<uint64_t>(TransferId::write(id));
+        block.control.aio_rw_flags = 0;
+        block.control.aio_lio_opcode = IOCB_CMD_PWRITE;
+        block.control.aio_reqprio = 0;
+        block.control.aio_fildes = write_fd_.get();
+        block.control.aio_buf = reinterpret_cast<uintptr_t>(block.payload->data() + offset);
+        block.control.aio_nbytes = len;
+        block.control.aio_offset = 0;
+        block.control.aio_flags = IOCB_FLAG_RESFD;
+        block.control.aio_resfd = worker_event_fd_.get();
         return block;
     }
 
-    std::unique_ptr<IoBlock> CreateWriteBlock(Block payload, uint64_t id) {
-        std::shared_ptr<Block> block = std::make_shared<Block>(std::move(payload));
-        size_t len = block->size();
-        return CreateWriteBlock(std::move(block), 0, len, id);
+    IoWriteBlock CreateWriteBlock(Block&& payload, uint64_t id) {
+        size_t len = payload.size();
+        return CreateWriteBlock(std::make_shared<Block>(std::move(payload)), 0, len, id);
     }
 
     void SubmitWrites() REQUIRES(write_mutex_) {
@@ -642,9 +674,9 @@
 
         struct iocb* iocbs[kUsbWriteQueueDepth];
         for (int i = 0; i < writes_to_submit; ++i) {
-            CHECK(!write_requests_[writes_submitted_ + i]->pending);
-            write_requests_[writes_submitted_ + i]->pending = true;
-            iocbs[i] = &write_requests_[writes_submitted_ + i]->control;
+            CHECK(!write_requests_[writes_submitted_ + i].pending);
+            write_requests_[writes_submitted_ + i].pending = true;
+            iocbs[i] = &write_requests_[writes_submitted_ + i].control;
             LOG(VERBOSE) << "submitting write_request " << static_cast<void*>(iocbs[i]);
         }
 
@@ -689,7 +721,7 @@
     std::optional<amessage> incoming_header_;
     IOVector incoming_payload_;
 
-    std::array<IoBlock, kUsbReadQueueDepth> read_requests_;
+    std::array<IoReadBlock, kUsbReadQueueDepth> read_requests_;
     IOVector read_data_;
 
     // ID of the next request that we're going to send out.
@@ -699,24 +731,17 @@
     size_t needed_read_id_ = 0;
 
     std::mutex write_mutex_;
-    std::deque<std::unique_ptr<IoBlock>> write_requests_ GUARDED_BY(write_mutex_);
+    std::deque<IoWriteBlock> write_requests_ GUARDED_BY(write_mutex_);
     size_t next_write_id_ GUARDED_BY(write_mutex_) = 0;
     size_t writes_submitted_ GUARDED_BY(write_mutex_) = 0;
 
     static constexpr int kInterruptionSignal = SIGUSR1;
 };
 
-void usb_init_legacy();
-
 static void usb_ffs_open_thread() {
     adb_thread_setname("usb ffs open");
 
     while (true) {
-        if (gFfsAioSupported.has_value() && !gFfsAioSupported.value()) {
-            LOG(INFO) << "failed to use nonblocking ffs, falling back to legacy";
-            return usb_init_legacy();
-        }
-
         unique_fd control;
         unique_fd bulk_out;
         unique_fd bulk_in;
@@ -738,13 +763,5 @@
 }
 
 void usb_init() {
-    bool use_nonblocking = android::base::GetBoolProperty(
-            "persist.adb.nonblocking_ffs",
-            android::base::GetBoolProperty("ro.adb.nonblocking_ffs", true));
-
-    if (use_nonblocking) {
-        std::thread(usb_ffs_open_thread).detach();
-    } else {
-        usb_init_legacy();
-    }
+    std::thread(usb_ffs_open_thread).detach();
 }
diff --git a/adb/daemon/usb_dummy.cpp b/adb/daemon/usb_dummy.cpp
deleted file mode 100644
index c9bf797..0000000
--- a/adb/daemon/usb_dummy.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <adbd/usb.h>
-
-#include <android-base/logging.h>
-
-int usb_write(usb_handle*, const void*, int) {
-    LOG(FATAL) << "unimplemented";
-    return -1;
-}
-
-int usb_read(usb_handle*, void*, int) {
-    LOG(FATAL) << "unimplemented";
-    return -1;
-}
-
-int usb_close(usb_handle*) {
-    LOG(FATAL) << "unimplemented";
-    return -1;
-}
-
-void usb_reset(usb_handle*) {
-    LOG(FATAL) << "unimplemented";
-}
-
-void usb_kick(usb_handle*) {
-    LOG(FATAL) << "unimplemented";
-}
diff --git a/adb/daemon/usb_ffs.cpp b/adb/daemon/usb_ffs.cpp
index 07b4ba8..e538ca8 100644
--- a/adb/daemon/usb_ffs.cpp
+++ b/adb/daemon/usb_ffs.cpp
@@ -18,6 +18,8 @@
 
 #include "sysdeps.h"
 
+#include "daemon/usb_ffs.h"
+
 #include <linux/usb/ch9.h>
 #include <linux/usb/functionfs.h>
 
@@ -26,7 +28,6 @@
 #include <android-base/unique_fd.h>
 
 #include "adb.h"
-#include "adbd/usb.h"
 
 #define MAX_PACKET_SIZE_FS 64
 #define MAX_PACKET_SIZE_HS 512
@@ -37,9 +38,12 @@
 // Number of buffers needed to fit MAX_PAYLOAD, with an extra for ZLPs.
 #define USB_FFS_NUM_BUFS ((4 * MAX_PAYLOAD / USB_FFS_BULK_SIZE) + 1)
 
+#define USB_EXT_PROP_UNICODE 1
+
 #define cpu_to_le16(x) htole16(x)
 #define cpu_to_le32(x) htole32(x)
 
+// clang-format off
 struct func_desc {
     struct usb_interface_descriptor intf;
     struct usb_endpoint_descriptor_no_audio source;
@@ -64,6 +68,34 @@
     struct func_desc fs_descs, hs_descs;
 } __attribute__((packed));
 
+template <size_t PropertyNameLength, size_t PropertyDataLength>
+struct usb_os_desc_ext_prop {
+    uint32_t dwSize = sizeof(*this);
+    uint32_t dwPropertyDataType = cpu_to_le32(USB_EXT_PROP_UNICODE);
+
+    // Property name and value are transmitted as UTF-16, but the kernel only
+    // accepts ASCII values and performs the conversion for us.
+    uint16_t wPropertyNameLength = cpu_to_le16(PropertyNameLength);
+    char bPropertyName[PropertyNameLength];
+
+    uint32_t dwPropertyDataLength = cpu_to_le32(PropertyDataLength);
+    char bProperty[PropertyDataLength];
+} __attribute__((packed));
+
+using usb_os_desc_guid_t = usb_os_desc_ext_prop<20, 39>;
+usb_os_desc_guid_t os_desc_guid = {
+    .bPropertyName = "DeviceInterfaceGUID",
+    .bProperty = "{F72FE0D4-CBCB-407D-8814-9ED673D0DD6B}",
+};
+
+struct usb_ext_prop_values {
+    usb_os_desc_guid_t guid;
+} __attribute__((packed));
+
+usb_ext_prop_values os_prop_values = {
+    .guid = os_desc_guid,
+};
+
 struct desc_v2 {
     struct usb_functionfs_descs_head_v2 header;
     // The rest of the structure depends on the flags in the header.
@@ -75,9 +107,10 @@
     struct ss_func_desc ss_descs;
     struct usb_os_desc_header os_header;
     struct usb_ext_compat_desc os_desc;
+    struct usb_os_desc_header os_prop_header;
+    struct usb_ext_prop_values os_prop_values;
 } __attribute__((packed));
 
-// clang-format off
 static struct func_desc fs_descriptors = {
     .intf = {
         .bLength = sizeof(fs_descriptors.intf),
@@ -172,13 +205,13 @@
 struct usb_ext_compat_desc os_desc_compat = {
     .bFirstInterfaceNumber = 0,
     .Reserved1 = cpu_to_le32(1),
-    .CompatibleID = {0},
+    .CompatibleID = { 'W', 'I', 'N', 'U', 'S', 'B', '\0', '\0'},
     .SubCompatibleID = {0},
     .Reserved2 = {0},
 };
 
 static struct usb_os_desc_header os_desc_header = {
-    .interface = cpu_to_le32(1),
+    .interface = cpu_to_le32(0),
     .dwLength = cpu_to_le32(sizeof(os_desc_header) + sizeof(os_desc_compat)),
     .bcdVersion = cpu_to_le32(1),
     .wIndex = cpu_to_le32(4),
@@ -186,6 +219,14 @@
     .Reserved = cpu_to_le32(0),
 };
 
+static struct usb_os_desc_header os_prop_header = {
+    .interface = cpu_to_le32(0),
+    .dwLength = cpu_to_le32(sizeof(os_desc_header) + sizeof(os_prop_values)),
+    .bcdVersion = cpu_to_le32(1),
+    .wIndex = cpu_to_le32(5),
+    .wCount = cpu_to_le16(1),
+};
+
 #define STR_INTERFACE_ "ADB Interface"
 
 static const struct {
@@ -221,12 +262,14 @@
     v2_descriptor.fs_count = 3;
     v2_descriptor.hs_count = 3;
     v2_descriptor.ss_count = 5;
-    v2_descriptor.os_count = 1;
+    v2_descriptor.os_count = 2;
     v2_descriptor.fs_descs = fs_descriptors;
     v2_descriptor.hs_descs = hs_descriptors;
     v2_descriptor.ss_descs = ss_descriptors;
     v2_descriptor.os_header = os_desc_header;
     v2_descriptor.os_desc = os_desc_compat;
+    v2_descriptor.os_prop_header = os_prop_header;
+    v2_descriptor.os_prop_values = os_prop_values;
 
     if (out_control->get() < 0) {  // might have already done this before
         LOG(INFO) << "opening control endpoint " << USB_FFS_ADB_EP0;
diff --git a/adb/daemon/usb_ffs.h b/adb/daemon/usb_ffs.h
new file mode 100644
index 0000000..a19d7cc
--- /dev/null
+++ b/adb/daemon/usb_ffs.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/unique_fd.h>
+
+bool open_functionfs(android::base::unique_fd* control, android::base::unique_fd* bulk_out,
+                     android::base::unique_fd* bulk_in);
diff --git a/adb/daemon/usb_legacy.cpp b/adb/daemon/usb_legacy.cpp
deleted file mode 100644
index fe80e7d..0000000
--- a/adb/daemon/usb_legacy.cpp
+++ /dev/null
@@ -1,327 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define TRACE_TAG USB
-
-#include "sysdeps.h"
-
-#include <dirent.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <linux/usb/ch9.h>
-#include <linux/usb/functionfs.h>
-
-#include <algorithm>
-#include <atomic>
-#include <chrono>
-#include <condition_variable>
-#include <mutex>
-#include <thread>
-
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-
-#include "adb.h"
-#include "adbd/usb.h"
-#include "transport.h"
-
-using namespace std::chrono_literals;
-
-#define MAX_PACKET_SIZE_FS 64
-#define MAX_PACKET_SIZE_HS 512
-#define MAX_PACKET_SIZE_SS 1024
-
-#define USB_FFS_BULK_SIZE 16384
-
-// Number of buffers needed to fit MAX_PAYLOAD, with an extra for ZLPs.
-#define USB_FFS_NUM_BUFS ((4 * MAX_PAYLOAD / USB_FFS_BULK_SIZE) + 1)
-
-static unique_fd& dummy_fd = *new unique_fd();
-
-static void aio_block_init(aio_block* aiob, unsigned num_bufs) {
-    aiob->iocb.resize(num_bufs);
-    aiob->iocbs.resize(num_bufs);
-    aiob->events.resize(num_bufs);
-    aiob->num_submitted = 0;
-    for (unsigned i = 0; i < num_bufs; i++) {
-        aiob->iocbs[i] = &aiob->iocb[i];
-    }
-    memset(&aiob->ctx, 0, sizeof(aiob->ctx));
-    if (io_setup(num_bufs, &aiob->ctx)) {
-        D("[ aio: got error on io_setup (%d) ]", errno);
-    }
-}
-
-static int getMaxPacketSize(int ffs_fd) {
-    usb_endpoint_descriptor desc;
-    if (ioctl(ffs_fd, FUNCTIONFS_ENDPOINT_DESC, reinterpret_cast<unsigned long>(&desc))) {
-        D("[ could not get endpoint descriptor! (%d) ]", errno);
-        return MAX_PACKET_SIZE_HS;
-    } else {
-        return desc.wMaxPacketSize;
-    }
-}
-
-static bool init_functionfs(struct usb_handle* h) {
-    LOG(INFO) << "initializing functionfs";
-    if (!open_functionfs(&h->control, &h->bulk_out, &h->bulk_in)) {
-        return false;
-    }
-
-    h->read_aiob.fd = h->bulk_out.get();
-    h->write_aiob.fd = h->bulk_in.get();
-    h->reads_zero_packets = true;
-    return true;
-}
-
-static void usb_legacy_ffs_open_thread(usb_handle* usb) {
-    adb_thread_setname("usb legacy ffs open");
-
-    while (true) {
-        // wait until the USB device needs opening
-        std::unique_lock<std::mutex> lock(usb->lock);
-        while (!usb->open_new_connection) {
-            usb->notify.wait(lock);
-        }
-        usb->open_new_connection = false;
-        lock.unlock();
-
-        while (true) {
-            if (init_functionfs(usb)) {
-                LOG(INFO) << "functionfs successfully initialized";
-                break;
-            }
-            std::this_thread::sleep_for(1s);
-        }
-
-        LOG(INFO) << "registering usb transport";
-        register_usb_transport(usb, nullptr, nullptr, 1);
-    }
-
-    // never gets here
-    abort();
-}
-
-static int usb_ffs_write(usb_handle* h, const void* data, int len) {
-    D("about to write (fd=%d, len=%d)", h->bulk_in.get(), len);
-
-    const char* buf = static_cast<const char*>(data);
-    int orig_len = len;
-    while (len > 0) {
-        int write_len = std::min(USB_FFS_BULK_SIZE, len);
-        int n = adb_write(h->bulk_in, buf, write_len);
-        if (n < 0) {
-            D("ERROR: fd = %d, n = %d: %s", h->bulk_in.get(), n, strerror(errno));
-            return -1;
-        }
-        buf += n;
-        len -= n;
-    }
-
-    D("[ done fd=%d ]", h->bulk_in.get());
-    return orig_len;
-}
-
-static int usb_ffs_read(usb_handle* h, void* data, int len, bool allow_partial) {
-    D("about to read (fd=%d, len=%d)", h->bulk_out.get(), len);
-
-    char* buf = static_cast<char*>(data);
-    int orig_len = len;
-    unsigned count = 0;
-    while (len > 0) {
-        int read_len = std::min(USB_FFS_BULK_SIZE, len);
-        int n = adb_read(h->bulk_out, buf, read_len);
-        if (n < 0) {
-            D("ERROR: fd = %d, n = %d: %s", h->bulk_out.get(), n, strerror(errno));
-            return -1;
-        }
-        buf += n;
-        len -= n;
-        count += n;
-
-        // For fastbootd command such as "getvar all", len parameter is always set 64.
-        // But what we read is actually less than 64.
-        // For example, length 10 for "getvar all" command.
-        // If we get less data than expected, this means there should be no more data.
-        if (allow_partial && n < read_len) {
-            orig_len = count;
-            break;
-        }
-    }
-
-    D("[ done fd=%d ]", h->bulk_out.get());
-    return orig_len;
-}
-
-static int usb_ffs_do_aio(usb_handle* h, const void* data, int len, bool read) {
-    aio_block* aiob = read ? &h->read_aiob : &h->write_aiob;
-    bool zero_packet = false;
-
-    int num_bufs = len / h->io_size + (len % h->io_size == 0 ? 0 : 1);
-    const char* cur_data = reinterpret_cast<const char*>(data);
-    int packet_size = getMaxPacketSize(aiob->fd);
-
-    if (posix_madvise(const_cast<void*>(data), len, POSIX_MADV_SEQUENTIAL | POSIX_MADV_WILLNEED) <
-        0) {
-        D("[ Failed to madvise: %d ]", errno);
-    }
-
-    for (int i = 0; i < num_bufs; i++) {
-        int buf_len = std::min(len, static_cast<int>(h->io_size));
-        io_prep(&aiob->iocb[i], aiob->fd, cur_data, buf_len, 0, read);
-
-        len -= buf_len;
-        cur_data += buf_len;
-
-        if (len == 0 && buf_len % packet_size == 0 && read) {
-            // adb does not expect the device to send a zero packet after data transfer,
-            // but the host *does* send a zero packet for the device to read.
-            zero_packet = h->reads_zero_packets;
-        }
-    }
-    if (zero_packet) {
-        io_prep(&aiob->iocb[num_bufs], aiob->fd, reinterpret_cast<const void*>(cur_data),
-                packet_size, 0, read);
-        num_bufs += 1;
-    }
-
-    while (true) {
-        if (TEMP_FAILURE_RETRY(io_submit(aiob->ctx, num_bufs, aiob->iocbs.data())) < num_bufs) {
-            PLOG(ERROR) << "aio: got error submitting " << (read ? "read" : "write");
-            return -1;
-        }
-        if (TEMP_FAILURE_RETRY(io_getevents(aiob->ctx, num_bufs, num_bufs, aiob->events.data(),
-                                            nullptr)) < num_bufs) {
-            PLOG(ERROR) << "aio: got error waiting " << (read ? "read" : "write");
-            return -1;
-        }
-        if (num_bufs == 1 && aiob->events[0].res == -EINTR) {
-            continue;
-        }
-        int ret = 0;
-        for (int i = 0; i < num_bufs; i++) {
-            if (aiob->events[i].res < 0) {
-                errno = -aiob->events[i].res;
-                PLOG(ERROR) << "aio: got error event on " << (read ? "read" : "write")
-                            << " total bufs " << num_bufs;
-                return -1;
-            }
-            ret += aiob->events[i].res;
-        }
-        return ret;
-    }
-}
-
-static int usb_ffs_aio_read(usb_handle* h, void* data, int len, bool allow_partial) {
-    return usb_ffs_do_aio(h, data, len, true);
-}
-
-static int usb_ffs_aio_write(usb_handle* h, const void* data, int len) {
-    return usb_ffs_do_aio(h, data, len, false);
-}
-
-static void usb_ffs_kick(usb_handle* h) {
-    int err;
-
-    err = ioctl(h->bulk_in.get(), FUNCTIONFS_CLEAR_HALT);
-    if (err < 0) {
-        D("[ kick: source (fd=%d) clear halt failed (%d) ]", h->bulk_in.get(), errno);
-    }
-
-    err = ioctl(h->bulk_out.get(), FUNCTIONFS_CLEAR_HALT);
-    if (err < 0) {
-        D("[ kick: sink (fd=%d) clear halt failed (%d) ]", h->bulk_out.get(), errno);
-    }
-
-    // don't close ep0 here, since we may not need to reinitialize it with
-    // the same descriptors again. if however ep1/ep2 fail to re-open in
-    // init_functionfs, only then would we close and open ep0 again.
-    // Ditto the comment in usb_adb_kick.
-    h->kicked = true;
-    TEMP_FAILURE_RETRY(dup2(dummy_fd.get(), h->bulk_out.get()));
-    TEMP_FAILURE_RETRY(dup2(dummy_fd.get(), h->bulk_in.get()));
-}
-
-static void usb_ffs_close(usb_handle* h) {
-    LOG(INFO) << "closing functionfs transport";
-
-    h->kicked = false;
-    h->bulk_out.reset();
-    h->bulk_in.reset();
-
-    // Notify usb_adb_open_thread to open a new connection.
-    h->lock.lock();
-    h->open_new_connection = true;
-    h->lock.unlock();
-    h->notify.notify_one();
-}
-
-usb_handle* create_usb_handle(unsigned num_bufs, unsigned io_size) {
-    usb_handle* h = new usb_handle();
-
-    if (android::base::GetBoolProperty("sys.usb.ffs.aio_compat", false)) {
-        // Devices on older kernels (< 3.18) will not have aio support for ffs
-        // unless backported. Fall back on the non-aio functions instead.
-        h->write = usb_ffs_write;
-        h->read = usb_ffs_read;
-    } else {
-        h->write = usb_ffs_aio_write;
-        h->read = usb_ffs_aio_read;
-        aio_block_init(&h->read_aiob, num_bufs);
-        aio_block_init(&h->write_aiob, num_bufs);
-    }
-    h->io_size = io_size;
-    h->kick = usb_ffs_kick;
-    h->close = usb_ffs_close;
-    return h;
-}
-
-void usb_init_legacy() {
-    D("[ usb_init - using legacy FunctionFS ]");
-    dummy_fd.reset(adb_open("/dev/null", O_WRONLY | O_CLOEXEC));
-    CHECK_NE(-1, dummy_fd.get());
-
-    std::thread(usb_legacy_ffs_open_thread, create_usb_handle(USB_FFS_NUM_BUFS, USB_FFS_BULK_SIZE))
-            .detach();
-}
-
-int usb_write(usb_handle* h, const void* data, int len) {
-    return h->write(h, data, len);
-}
-
-int usb_read(usb_handle* h, void* data, int len) {
-    return h->read(h, data, len, false /* allow_partial */);
-}
-
-int usb_close(usb_handle* h) {
-    h->close(h);
-    return 0;
-}
-
-void usb_reset(usb_handle* h) {
-    usb_close(h);
-}
-
-void usb_kick(usb_handle* h) {
-    h->kick(h);
-}
diff --git a/adb/fastdeploy/Android.bp b/adb/fastdeploy/Android.bp
index 1ba0de0..f5893aa 100644
--- a/adb/fastdeploy/Android.bp
+++ b/adb/fastdeploy/Android.bp
@@ -13,27 +13,77 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
+java_library {
+    name: "deployagent_lib",
+    sdk_version: "24",
+    srcs: [
+        "deployagent/src/**/*.java",
+        "proto/**/*.proto",
+    ],
+    proto: {
+        type: "lite",
+    },
+}
 
 java_binary {
     name: "deployagent",
     sdk_version: "24",
-    srcs: ["deployagent/src/**/*.java", "deploylib/src/**/*.java", "proto/**/*.proto"],
-    static_libs: ["apkzlib_zip"],
-    wrapper: "deployagent/deployagent.sh",
-    proto: {
-        type: "lite",
-    },
+    static_libs: [
+        "deployagent_lib",
+    ],
     dex_preopt: {
         enabled: false,
     }
 }
 
-java_binary_host {
-    name: "deploypatchgenerator",
-    srcs: ["deploypatchgenerator/src/**/*.java", "deploylib/src/**/*.java", "proto/**/*.proto"],
-    static_libs: ["apkzlib"],
-    manifest: "deploypatchgenerator/manifest.txt",
-    proto: {
-        type: "full",
-    }
+android_test {
+    name: "FastDeployTests",
+
+    manifest: "AndroidManifest.xml",
+
+    srcs: [
+        "deployagent/test/com/android/fastdeploy/ApkArchiveTest.java",
+    ],
+
+    static_libs: [
+        "androidx.test.core",
+        "androidx.test.runner",
+        "androidx.test.rules",
+        "deployagent_lib",
+        "mockito-target-inline-minus-junit4",
+    ],
+
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+        "android.test.mock",
+    ],
+
+    data: [
+        "testdata/sample.apk",
+        "testdata/sample.cd",
+    ],
+
+    optimize: {
+        enabled: false,
+    },
+}
+
+java_test_host {
+    name: "FastDeployHostTests",
+    srcs: [
+        "deployagent/test/com/android/fastdeploy/FastDeployTest.java",
+    ],
+    data: [
+        "testdata/helloworld5.apk",
+        "testdata/helloworld7.apk",
+    ],
+    libs: [
+        "compatibility-host-util",
+        "cts-tradefed",
+        "tradefed",
+    ],
+    test_suites: [
+        "general-tests",
+    ],
 }
diff --git a/adb/fastdeploy/AndroidManifest.xml b/adb/fastdeploy/AndroidManifest.xml
new file mode 100644
index 0000000..89dc745
--- /dev/null
+++ b/adb/fastdeploy/AndroidManifest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.android.fastdeploytests">
+
+    <application android:testOnly="true"
+                 android:debuggable="true">
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <instrumentation
+        android:name="androidx.test.runner.AndroidJUnitRunner"
+        android:targetPackage="com.android.fastdeploytests"
+        android:label="FastDeploy Tests" />
+</manifest>
\ No newline at end of file
diff --git a/adb/fastdeploy/AndroidTest.xml b/adb/fastdeploy/AndroidTest.xml
new file mode 100644
index 0000000..24a72bc
--- /dev/null
+++ b/adb/fastdeploy/AndroidTest.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2019 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+<configuration description="Runs Device Tests for FastDeploy.">
+    <option name="test-suite-tag" value="FastDeployTests"/>
+
+    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+        <option name="cleanup-apks" value="true"/>
+        <option name="install-arg" value="-t"/>
+        <option name="test-file-name" value="FastDeployTests.apk"/>
+    </target_preparer>
+
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="false" />
+        <option name="push-file" key="sample.apk" value="/data/local/tmp/FastDeployTests/sample.apk" />
+        <option name="push-file" key="sample.cd" value="/data/local/tmp/FastDeployTests/sample.cd" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.AndroidJUnitTest">
+        <option name="package" value="com.android.fastdeploytests"/>
+        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner"/>
+    </test>
+
+    <test class="com.android.compatibility.common.tradefed.testtype.JarHostTest" >
+        <option name="jar" value="FastDeployHostTests.jar" />
+    </test>
+</configuration>
diff --git a/adb/fastdeploy/deployagent/deployagent.sh b/adb/fastdeploy/deployagent/deployagent.sh
index 4f17eb7..91576ca 100755
--- a/adb/fastdeploy/deployagent/deployagent.sh
+++ b/adb/fastdeploy/deployagent/deployagent.sh
@@ -1,7 +1,4 @@
-# Script to start "deployagent" on the device, which has a very rudimentary
-# shell.
-#
+#!/system/bin/sh
 base=/data/local/tmp
 export CLASSPATH=$base/deployagent.jar
 exec app_process $base com.android.fastdeploy.DeployAgent "$@"
-
diff --git a/adb/fastdeploy/deployagent/src/com/android/fastdeploy/ApkArchive.java b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/ApkArchive.java
new file mode 100644
index 0000000..31e0502
--- /dev/null
+++ b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/ApkArchive.java
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.fastdeploy;
+
+import android.util.Log;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.channels.FileChannel;
+
+/**
+ * Extremely light-weight APK parser class.
+ * Aware of Central Directory, Local File Headers and Signature.
+ * No Zip64 support yet.
+ */
+public final class ApkArchive {
+    private static final String TAG = "ApkArchive";
+
+    // Central Directory constants.
+    private static final int EOCD_SIGNATURE = 0x06054b50;
+    private static final int EOCD_MIN_SIZE = 22;
+    private static final long EOCD_MAX_SIZE = 65_535L + EOCD_MIN_SIZE;
+
+    private static final int CD_ENTRY_HEADER_SIZE_BYTES = 22;
+    private static final int CD_LOCAL_FILE_HEADER_SIZE_OFFSET = 12;
+
+    // Signature constants.
+    private static final int EOSIGNATURE_SIZE = 24;
+
+    public final static class Dump {
+        final byte[] cd;
+        final byte[] signature;
+
+        Dump(byte[] cd, byte[] signature) {
+            this.cd = cd;
+            this.signature = signature;
+        }
+    }
+
+    final static class Location {
+        final long offset;
+        final long size;
+
+        public Location(long offset, long size) {
+            this.offset = offset;
+            this.size = size;
+        }
+    }
+
+    private final RandomAccessFile mFile;
+    private final FileChannel mChannel;
+
+    public ApkArchive(File apk) throws IOException {
+        mFile = new RandomAccessFile(apk, "r");
+        mChannel = mFile.getChannel();
+    }
+
+    /**
+     * Extract the APK metadata: content of Central Directory and Signature.
+     *
+     * @return raw content from APK representing CD and Signature data.
+     */
+    public Dump extractMetadata() throws IOException {
+        Location cdLoc = getCDLocation();
+        byte[] cd = readMetadata(cdLoc);
+
+        byte[] signature = null;
+        Location sigLoc = getSignatureLocation(cdLoc.offset);
+        if (sigLoc != null) {
+            signature = readMetadata(sigLoc);
+            long size = ByteBuffer.wrap(signature).order(ByteOrder.LITTLE_ENDIAN).getLong();
+            if (sigLoc.size != size) {
+                Log.e(TAG, "Mismatching signature sizes: " + sigLoc.size + " != " + size);
+                signature = null;
+            }
+        }
+
+        return new Dump(cd, signature);
+    }
+
+    private long findEndOfCDRecord() throws IOException {
+        final long fileSize = mChannel.size();
+        int sizeToRead = Math.toIntExact(Math.min(fileSize, EOCD_MAX_SIZE));
+        final long readOffset = fileSize - sizeToRead;
+        ByteBuffer buffer = mChannel.map(FileChannel.MapMode.READ_ONLY, readOffset,
+                sizeToRead).order(ByteOrder.LITTLE_ENDIAN);
+
+        buffer.position(sizeToRead - EOCD_MIN_SIZE);
+        while (true) {
+            int signature = buffer.getInt(); // Read 4 bytes.
+            if (signature == EOCD_SIGNATURE) {
+                return readOffset + buffer.position() - 4;
+            }
+            if (buffer.position() == 4) {
+                break;
+            }
+            buffer.position(buffer.position() - Integer.BYTES - 1); // Backtrack 5 bytes.
+        }
+
+        return -1L;
+    }
+
+    private Location findCDRecord(ByteBuffer buf) {
+        if (buf.order() != ByteOrder.LITTLE_ENDIAN) {
+            throw new IllegalArgumentException("ByteBuffer byte order must be little endian");
+        }
+        if (buf.remaining() < CD_ENTRY_HEADER_SIZE_BYTES) {
+            throw new IllegalArgumentException(
+                    "Input too short. Need at least " + CD_ENTRY_HEADER_SIZE_BYTES
+                            + " bytes, available: " + buf.remaining() + "bytes.");
+        }
+
+        int originalPosition = buf.position();
+        int recordSignature = buf.getInt();
+        if (recordSignature != EOCD_SIGNATURE) {
+            throw new IllegalArgumentException(
+                    "Not a Central Directory record. Signature: 0x"
+                            + Long.toHexString(recordSignature & 0xffffffffL));
+        }
+
+        buf.position(originalPosition + CD_LOCAL_FILE_HEADER_SIZE_OFFSET);
+        long size = buf.getInt() & 0xffffffffL;
+        long offset = buf.getInt() & 0xffffffffL;
+        return new Location(offset, size);
+    }
+
+    // Retrieve the location of the Central Directory Record.
+    Location getCDLocation() throws IOException {
+        long eocdRecord = findEndOfCDRecord();
+        if (eocdRecord < 0) {
+            throw new IllegalArgumentException("Unable to find End of Central Directory record.");
+        }
+
+        Location location = findCDRecord(mChannel.map(FileChannel.MapMode.READ_ONLY, eocdRecord,
+                CD_ENTRY_HEADER_SIZE_BYTES).order(ByteOrder.LITTLE_ENDIAN));
+        if (location == null) {
+            throw new IllegalArgumentException("Unable to find Central Directory File Header.");
+        }
+
+        return location;
+    }
+
+    // Retrieve the location of the signature block starting from Central
+    // Directory Record or null if signature is not found.
+    Location getSignatureLocation(long cdRecordOffset) throws IOException {
+        long signatureOffset = cdRecordOffset - EOSIGNATURE_SIZE;
+        if (signatureOffset < 0) {
+            Log.e(TAG, "Unable to find Signature.");
+            return null;
+        }
+
+        ByteBuffer signature = mChannel.map(FileChannel.MapMode.READ_ONLY, signatureOffset,
+                EOSIGNATURE_SIZE).order(ByteOrder.LITTLE_ENDIAN);
+
+        long size = signature.getLong();
+
+        byte[] sign = new byte[16];
+        signature.get(sign);
+        String signAsString = new String(sign);
+        if (!"APK Sig Block 42".equals(signAsString)) {
+            Log.e(TAG, "Signature magic does not match: " + signAsString);
+            return null;
+        }
+
+        long offset = cdRecordOffset - size - 8;
+
+        return new Location(offset, size);
+    }
+
+    private byte[] readMetadata(Location loc) throws IOException {
+        byte[] payload = new byte[(int) loc.size];
+        ByteBuffer buffer = mChannel.map(FileChannel.MapMode.READ_ONLY, loc.offset, loc.size);
+        buffer.get(payload);
+        return payload;
+    }
+}
diff --git a/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java
index 2d3b135..3812307 100644
--- a/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java
+++ b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java
@@ -24,18 +24,22 @@
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
-import java.util.concurrent.SynchronousQueue;
-import java.util.concurrent.TimeUnit;
-import java.io.OutputStream;
 import java.io.RandomAccessFile;
-import java.util.Set;
+import java.nio.channels.Channels;
+import java.nio.channels.FileChannel;
+import java.nio.channels.WritableByteChannel;
 
+import com.android.fastdeploy.PatchFormatException;
+import com.android.fastdeploy.ApkArchive;
+import com.android.fastdeploy.APKDump;
 import com.android.fastdeploy.APKMetaData;
 import com.android.fastdeploy.PatchUtils;
 
+import com.google.protobuf.ByteString;
+
 public final class DeployAgent {
     private static final int BUFFER_SIZE = 128 * 1024;
-    private static final int AGENT_VERSION = 0x00000002;
+    private static final int AGENT_VERSION = 0x00000003;
 
     public static void main(String[] args) {
         int exitCode = 0;
@@ -45,68 +49,70 @@
             }
 
             String commandString = args[0];
+            switch (commandString) {
+                case "dump": {
+                    if (args.length != 3) {
+                        showUsage(1);
+                    }
 
-            if (commandString.equals("extract")) {
-                if (args.length != 2) {
-                    showUsage(1);
-                }
-
-                String packageName = args[1];
-                extractMetaData(packageName);
-            } else if (commandString.equals("find")) {
-                if (args.length != 2) {
-                    showUsage(1);
-                }
-
-                String packageName = args[1];
-                if (getFilenameFromPackageName(packageName) == null) {
-                    exitCode = 3;
-                }
-            } else if (commandString.equals("apply")) {
-                if (args.length < 4) {
-                    showUsage(1);
-                }
-
-                String packageName = args[1];
-                String patchPath = args[2];
-                String outputParam = args[3];
-
-                InputStream deltaInputStream = null;
-                if (patchPath.compareTo("-") == 0) {
-                    deltaInputStream = System.in;
-                } else {
-                    deltaInputStream = new FileInputStream(patchPath);
-                }
-
-                if (outputParam.equals("-o")) {
-                    OutputStream outputStream = null;
-                    if (args.length > 4) {
-                        String outputPath = args[4];
-                        if (!outputPath.equals("-")) {
-                            outputStream = new FileOutputStream(outputPath);
+                    String requiredVersion = args[1];
+                    if (AGENT_VERSION == Integer.parseInt(requiredVersion)) {
+                        String packageName = args[2];
+                        String packagePath = getFilenameFromPackageName(packageName);
+                        if (packagePath != null) {
+                            dumpApk(packageName, packagePath);
+                        } else {
+                            exitCode = 3;
                         }
+                    } else {
+                        System.out.printf("0x%08X\n", AGENT_VERSION);
+                        exitCode = 4;
                     }
-                    if (outputStream == null) {
-                        outputStream = System.out;
-                    }
-                    File deviceFile = getFileFromPackageName(packageName);
-                    writePatchToStream(
-                            new RandomAccessFile(deviceFile, "r"), deltaInputStream, outputStream);
-                } else if (outputParam.equals("-pm")) {
-                    String[] sessionArgs = null;
-                    if (args.length > 4) {
-                        int numSessionArgs = args.length-4;
-                        sessionArgs = new String[numSessionArgs];
-                        for (int i=0 ; i<numSessionArgs ; i++) {
-                            sessionArgs[i] = args[i+4];
-                        }
-                    }
-                    exitCode = applyPatch(packageName, deltaInputStream, sessionArgs);
+                    break;
                 }
-            } else if (commandString.equals("version")) {
-                System.out.printf("0x%08X\n", AGENT_VERSION);
-            } else {
-                showUsage(1);
+                case "apply": {
+                    if (args.length < 3) {
+                        showUsage(1);
+                    }
+
+                    String patchPath = args[1];
+                    String outputParam = args[2];
+
+                    InputStream deltaInputStream = null;
+                    if (patchPath.compareTo("-") == 0) {
+                        deltaInputStream = System.in;
+                    } else {
+                        deltaInputStream = new FileInputStream(patchPath);
+                    }
+
+                    if (outputParam.equals("-o")) {
+                        OutputStream outputStream = null;
+                        if (args.length > 3) {
+                            String outputPath = args[3];
+                            if (!outputPath.equals("-")) {
+                                outputStream = new FileOutputStream(outputPath);
+                            }
+                        }
+                        if (outputStream == null) {
+                            outputStream = System.out;
+                        }
+                        writePatchToStream(deltaInputStream, outputStream);
+                    } else if (outputParam.equals("-pm")) {
+                        String[] sessionArgs = null;
+                        if (args.length > 3) {
+                            int numSessionArgs = args.length - 3;
+                            sessionArgs = new String[numSessionArgs];
+                            for (int i = 0; i < numSessionArgs; i++) {
+                                sessionArgs[i] = args[i + 3];
+                            }
+                        }
+                        exitCode = applyPatch(deltaInputStream, sessionArgs);
+                    }
+                    break;
+                }
+                default:
+                    showUsage(1);
+                    break;
             }
         } catch (Exception e) {
             System.err.println("Error: " + e);
@@ -118,16 +124,16 @@
 
     private static void showUsage(int exitCode) {
         System.err.println(
-            "usage: deployagent <command> [<args>]\n\n" +
-            "commands:\n" +
-            "version                             get the version\n" +
-            "find PKGNAME                        return zero if package found, else non-zero\n" +
-            "extract PKGNAME                     extract an installed package's metadata\n" +
-            "apply PKGNAME PATCHFILE [-o|-pm]    apply a patch from PATCHFILE (- for stdin) to an installed package\n" +
-            " -o <FILE> directs output to FILE, default or - for stdout\n" +
-            " -pm <ARGS> directs output to package manager, passes <ARGS> to 'pm install-create'\n"
-            );
-
+                "usage: deployagent <command> [<args>]\n\n" +
+                        "commands:\n" +
+                        "dump VERSION PKGNAME  dump info for an installed package given that " +
+                        "VERSION equals current agent's version\n" +
+                        "apply PATCHFILE [-o|-pm]    apply a patch from PATCHFILE " +
+                        "(- for stdin) to an installed package\n" +
+                        " -o <FILE> directs output to FILE, default or - for stdout\n" +
+                        " -pm <ARGS> directs output to package manager, passes <ARGS> to " +
+                        "'pm install-create'\n"
+        );
         System.exit(exitCode);
     }
 
@@ -162,32 +168,34 @@
                 }
                 int equalsIndex = line.lastIndexOf(packageSuffix);
                 String fileName =
-                    line.substring(packageIndex + packagePrefix.length(), equalsIndex);
+                        line.substring(packageIndex + packagePrefix.length(), equalsIndex);
                 return fileName;
             }
         }
         return null;
     }
 
-    private static File getFileFromPackageName(String packageName) throws IOException {
-        String filename = getFilenameFromPackageName(packageName);
-        if (filename == null) {
-            // Should not happen (function is only called when we know the package exists)
-            throw new IOException("package not found");
-        }
-        return new File(filename);
-    }
+    private static void dumpApk(String packageName, String packagePath) throws IOException {
+        File apk = new File(packagePath);
+        ApkArchive.Dump dump = new ApkArchive(apk).extractMetadata();
 
-    private static void extractMetaData(String packageName) throws IOException {
-        File apkFile = getFileFromPackageName(packageName);
-        APKMetaData apkMetaData = PatchUtils.getAPKMetaData(apkFile);
-        apkMetaData.writeDelimitedTo(System.out);
+        APKDump.Builder apkDumpBuilder = APKDump.newBuilder();
+        apkDumpBuilder.setName(packageName);
+        if (dump.cd != null) {
+            apkDumpBuilder.setCd(ByteString.copyFrom(dump.cd));
+        }
+        if (dump.signature != null) {
+            apkDumpBuilder.setSignature(ByteString.copyFrom(dump.signature));
+        }
+        apkDumpBuilder.setAbsolutePath(apk.getAbsolutePath());
+
+        apkDumpBuilder.build().writeTo(System.out);
     }
 
     private static int createInstallSession(String[] args) throws IOException {
         StringBuilder commandBuilder = new StringBuilder();
         commandBuilder.append("pm install-create ");
-        for (int i=0 ; args != null && i<args.length ; i++) {
+        for (int i = 0; args != null && i < args.length; i++) {
             commandBuilder.append(args[i] + " ");
         }
 
@@ -199,7 +207,8 @@
         String successLineEnd = "]";
         while ((line = reader.readLine()) != null) {
             if (line.startsWith(successLineStart) && line.endsWith(successLineEnd)) {
-                return Integer.parseInt(line.substring(successLineStart.length(), line.lastIndexOf(successLineEnd)));
+                return Integer.parseInt(line.substring(successLineStart.length(),
+                        line.lastIndexOf(successLineEnd)));
             }
         }
 
@@ -213,17 +222,15 @@
         return p.exitValue();
     }
 
-    private static int applyPatch(String packageName, InputStream deltaStream, String[] sessionArgs)
+    private static int applyPatch(InputStream deltaStream, String[] sessionArgs)
             throws IOException, PatchFormatException {
-        File deviceFile = getFileFromPackageName(packageName);
         int sessionId = createInstallSession(sessionArgs);
         if (sessionId < 0) {
             System.err.println("PM Create Session Failed");
             return -1;
         }
 
-        int writeExitCode = writePatchedDataToSession(new RandomAccessFile(deviceFile, "r"), deltaStream, sessionId);
-
+        int writeExitCode = writePatchedDataToSession(deltaStream, sessionId);
         if (writeExitCode == 0) {
             return commitInstallSession(sessionId);
         } else {
@@ -231,85 +238,94 @@
         }
     }
 
-    private static long writePatchToStream(RandomAccessFile oldData, InputStream patchData,
-        OutputStream outputStream) throws IOException, PatchFormatException {
+    private static long writePatchToStream(InputStream patchData,
+            OutputStream outputStream) throws IOException, PatchFormatException {
         long newSize = readPatchHeader(patchData);
-        long bytesWritten = writePatchedDataToStream(oldData, newSize, patchData, outputStream);
+        long bytesWritten = writePatchedDataToStream(newSize, patchData, outputStream);
         outputStream.flush();
         if (bytesWritten != newSize) {
             throw new PatchFormatException(String.format(
-                "output size mismatch (expected %ld but wrote %ld)", newSize, bytesWritten));
+                    "output size mismatch (expected %ld but wrote %ld)", newSize, bytesWritten));
         }
         return bytesWritten;
     }
 
     private static long readPatchHeader(InputStream patchData)
-        throws IOException, PatchFormatException {
+            throws IOException, PatchFormatException {
         byte[] signatureBuffer = new byte[PatchUtils.SIGNATURE.length()];
         try {
-            PatchUtils.readFully(patchData, signatureBuffer, 0, signatureBuffer.length);
+            PatchUtils.readFully(patchData, signatureBuffer);
         } catch (IOException e) {
             throw new PatchFormatException("truncated signature");
         }
 
-        String signature = new String(signatureBuffer, 0, signatureBuffer.length, "US-ASCII");
+        String signature = new String(signatureBuffer);
         if (!PatchUtils.SIGNATURE.equals(signature)) {
             throw new PatchFormatException("bad signature");
         }
 
-        long newSize = PatchUtils.readBsdiffLong(patchData);
-        if (newSize < 0 || newSize > Integer.MAX_VALUE) {
-            throw new PatchFormatException("bad newSize");
+        long newSize = PatchUtils.readLELong(patchData);
+        if (newSize < 0) {
+            throw new PatchFormatException("bad newSize: " + newSize);
         }
 
         return newSize;
     }
 
     // Note that this function assumes patchData has been seek'ed to the start of the delta stream
-    // (i.e. the signature has already been read by readPatchHeader). For a stream that points to the
-    // start of a patch file call writePatchToStream
-    private static long writePatchedDataToStream(RandomAccessFile oldData, long newSize,
-        InputStream patchData, OutputStream outputStream) throws IOException {
+    // (i.e. the signature has already been read by readPatchHeader). For a stream that points to
+    // the start of a patch file call writePatchToStream
+    private static long writePatchedDataToStream(long newSize, InputStream patchData,
+            OutputStream outputStream) throws IOException {
+        String deviceFile = PatchUtils.readString(patchData);
+        RandomAccessFile oldDataFile = new RandomAccessFile(deviceFile, "r");
+        FileChannel oldData = oldDataFile.getChannel();
+
+        WritableByteChannel newData = Channels.newChannel(outputStream);
+
         long newDataBytesWritten = 0;
         byte[] buffer = new byte[BUFFER_SIZE];
 
         while (newDataBytesWritten < newSize) {
-            long copyLen = PatchUtils.readFormattedLong(patchData);
-            if (copyLen > 0) {
-                PatchUtils.pipe(patchData, outputStream, buffer, (int) copyLen);
+            long newDataLen = PatchUtils.readLELong(patchData);
+            if (newDataLen > 0) {
+                PatchUtils.pipe(patchData, outputStream, buffer, newDataLen);
             }
 
-            long oldDataOffset = PatchUtils.readFormattedLong(patchData);
-            long oldDataLen = PatchUtils.readFormattedLong(patchData);
-            oldData.seek(oldDataOffset);
-            if (oldDataLen > 0) {
-                PatchUtils.pipe(oldData, outputStream, buffer, (int) oldDataLen);
+            long oldDataOffset = PatchUtils.readLELong(patchData);
+            long oldDataLen = PatchUtils.readLELong(patchData);
+            if (oldDataLen >= 0) {
+                long offset = oldDataOffset;
+                long len = oldDataLen;
+                while (len > 0) {
+                    long chunkLen = Math.min(len, 1024*1024*1024);
+                    oldData.transferTo(offset, chunkLen, newData);
+                    offset += chunkLen;
+                    len -= chunkLen;
+                }
             }
-
-            newDataBytesWritten += copyLen + oldDataLen;
+            newDataBytesWritten += newDataLen + oldDataLen;
         }
 
         return newDataBytesWritten;
     }
 
-    private static int writePatchedDataToSession(RandomAccessFile oldData, InputStream patchData, int sessionId)
+    private static int writePatchedDataToSession(InputStream patchData, int sessionId)
             throws IOException, PatchFormatException {
         try {
             Process p;
             long newSize = readPatchHeader(patchData);
-            StringBuilder commandBuilder = new StringBuilder();
-            commandBuilder.append(String.format("pm install-write -S %d %d -- -", newSize, sessionId));
-
-            String command = commandBuilder.toString();
+            String command = String.format("pm install-write -S %d %d -- -", newSize, sessionId);
             p = Runtime.getRuntime().exec(command);
 
             OutputStream sessionOutputStream = p.getOutputStream();
-            long bytesWritten = writePatchedDataToStream(oldData, newSize, patchData, sessionOutputStream);
+            long bytesWritten = writePatchedDataToStream(newSize, patchData, sessionOutputStream);
             sessionOutputStream.flush();
             p.waitFor();
             if (bytesWritten != newSize) {
                 throw new PatchFormatException(
-                        String.format("output size mismatch (expected %d but wrote %)", newSize, bytesWritten));
+                        String.format("output size mismatch (expected %d but wrote %)", newSize,
+                                bytesWritten));
             }
             return p.exitValue();
         } catch (InterruptedException e) {
diff --git a/adb/fastdeploy/deploylib/src/com/android/fastdeploy/PatchFormatException.java b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/PatchFormatException.java
similarity index 100%
rename from adb/fastdeploy/deploylib/src/com/android/fastdeploy/PatchFormatException.java
rename to adb/fastdeploy/deployagent/src/com/android/fastdeploy/PatchFormatException.java
diff --git a/adb/fastdeploy/deployagent/src/com/android/fastdeploy/PatchUtils.java b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/PatchUtils.java
new file mode 100644
index 0000000..54be26f
--- /dev/null
+++ b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/PatchUtils.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.fastdeploy;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+class PatchUtils {
+    public static final String SIGNATURE = "FASTDEPLOY";
+
+    /**
+     * Reads a 64-bit signed integer in Little Endian format from the specified {@link
+     * DataInputStream}.
+     *
+     * @param in the stream to read from.
+     */
+    static long readLELong(InputStream in) throws IOException {
+        byte[] buffer = new byte[Long.BYTES];
+        readFully(in, buffer);
+        ByteBuffer buf = ByteBuffer.wrap(buffer).order(ByteOrder.LITTLE_ENDIAN);
+        return buf.getLong();
+    }
+
+    static String readString(InputStream in) throws IOException {
+        int size = (int) readLELong(in);
+        byte[] buffer = new byte[size];
+        readFully(in, buffer);
+        return new String(buffer);
+    }
+
+    static void readFully(final InputStream in, final byte[] destination, final int startAt,
+            final int numBytes) throws IOException {
+        int numRead = 0;
+        while (numRead < numBytes) {
+            int readNow = in.read(destination, startAt + numRead, numBytes - numRead);
+            if (readNow == -1) {
+                throw new IOException("truncated input stream");
+            }
+            numRead += readNow;
+        }
+    }
+
+    static void readFully(final InputStream in, final byte[] destination) throws IOException {
+        readFully(in, destination, 0, destination.length);
+    }
+
+    static void pipe(final InputStream in, final OutputStream out, final byte[] buffer,
+            long copyLength) throws IOException {
+        while (copyLength > 0) {
+            int maxCopy = (int) Math.min(buffer.length, copyLength);
+            readFully(in, buffer, 0, maxCopy);
+            out.write(buffer, 0, maxCopy);
+            copyLength -= maxCopy;
+        }
+    }
+}
diff --git a/adb/fastdeploy/deployagent/test/com/android/fastdeploy/ApkArchiveTest.java b/adb/fastdeploy/deployagent/test/com/android/fastdeploy/ApkArchiveTest.java
new file mode 100644
index 0000000..7c2468f
--- /dev/null
+++ b/adb/fastdeploy/deployagent/test/com/android/fastdeploy/ApkArchiveTest.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.fastdeploy;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import com.android.fastdeploy.ApkArchive;
+
+import java.io.File;
+import java.io.IOException;
+
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class ApkArchiveTest {
+    private static final File SAMPLE_APK = new File("/data/local/tmp/FastDeployTests/sample.apk");
+    private static final File WRONG_APK = new File("/data/local/tmp/FastDeployTests/sample.cd");
+
+    @Test
+    public void testApkArchiveSizes() throws IOException {
+        ApkArchive archive = new ApkArchive(SAMPLE_APK);
+
+        ApkArchive.Location cdLoc = archive.getCDLocation();
+        assertNotEquals(cdLoc, null);
+        assertEquals(cdLoc.offset, 2044145);
+        assertEquals(cdLoc.size, 49390);
+
+        // Check that block can be retrieved
+        ApkArchive.Location sigLoc = archive.getSignatureLocation(cdLoc.offset);
+        assertNotEquals(sigLoc, null);
+        assertEquals(sigLoc.offset, 2040049);
+        assertEquals(sigLoc.size, 4088);
+    }
+
+    @Test
+    public void testApkArchiveDump() throws IOException {
+        ApkArchive archive = new ApkArchive(SAMPLE_APK);
+
+        ApkArchive.Dump dump = archive.extractMetadata();
+        assertNotEquals(dump, null);
+        assertNotEquals(dump.cd, null);
+        assertNotEquals(dump.signature, null);
+        assertEquals(dump.cd.length, 49390);
+        assertEquals(dump.signature.length, 4088);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testApkArchiveDumpWrongApk() throws IOException {
+        ApkArchive archive = new ApkArchive(WRONG_APK);
+
+        archive.extractMetadata();
+    }
+}
diff --git a/adb/fastdeploy/deployagent/test/com/android/fastdeploy/FastDeployTest.java b/adb/fastdeploy/deployagent/test/com/android/fastdeploy/FastDeployTest.java
new file mode 100644
index 0000000..4aa2f79
--- /dev/null
+++ b/adb/fastdeploy/deployagent/test/com/android/fastdeploy/FastDeployTest.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.fastdeploy;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import com.android.compatibility.common.tradefed.build.CompatibilityBuildHelper;
+import com.android.ddmlib.Log.LogLevel;
+import com.android.tradefed.device.DeviceNotAvailableException;
+import com.android.tradefed.log.LogUtil.CLog;
+import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
+import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.IOException;
+import java.util.Arrays;
+
+@RunWith(DeviceJUnit4ClassRunner.class)
+public class FastDeployTest extends BaseHostJUnit4Test {
+
+    private static final String TEST_APP_PACKAGE = "com.example.helloworld";
+    private static final String TEST_APK5_NAME = "helloworld5.apk";
+    private static final String TEST_APK7_NAME = "helloworld7.apk";
+
+    private String mTestApk5Path;
+    private String mTestApk7Path;
+
+    @Before
+    public void setUp() throws Exception {
+        CompatibilityBuildHelper buildHelper = new CompatibilityBuildHelper(getBuild());
+        getDevice().uninstallPackage(TEST_APP_PACKAGE);
+        mTestApk5Path = buildHelper.getTestFile(TEST_APK5_NAME).getAbsolutePath();
+        mTestApk7Path = buildHelper.getTestFile(TEST_APK7_NAME).getAbsolutePath();
+    }
+
+    @Test
+    public void testAppInstalls() throws Exception {
+        fastInstallPackage(mTestApk5Path);
+        assertTrue(isAppInstalled(TEST_APP_PACKAGE));
+        getDevice().uninstallPackage(TEST_APP_PACKAGE);
+        assertFalse(isAppInstalled(TEST_APP_PACKAGE));
+    }
+
+    @Test
+    public void testAppPatch() throws Exception {
+        fastInstallPackage(mTestApk5Path);
+        assertTrue(isAppInstalled(TEST_APP_PACKAGE));
+        fastInstallPackage(mTestApk7Path);
+        assertTrue(isAppInstalled(TEST_APP_PACKAGE));
+        getDevice().uninstallPackage(TEST_APP_PACKAGE);
+        assertFalse(isAppInstalled(TEST_APP_PACKAGE));
+    }
+
+    private boolean isAppInstalled(String packageName) throws DeviceNotAvailableException {
+        final String result = getDevice().executeShellCommand("pm list packages");
+        CLog.logAndDisplay(LogLevel.INFO, result);
+        final int prefixLength = "package:".length();
+        return Arrays.stream(result.split("\\r?\\n"))
+                .anyMatch(line -> line.substring(prefixLength).equals(packageName));
+    }
+
+    // Mostly copied from PkgInstallSignatureVerificationTest.java.
+    private void fastInstallPackage(String apkPath)
+            throws IOException, DeviceNotAvailableException {
+        String result = getDevice().executeAdbCommand("install", "-t", "--fastdeploy", "--force-agent",
+                apkPath);
+        CLog.logAndDisplay(LogLevel.INFO, result);
+    }
+}
+
+
diff --git a/adb/fastdeploy/deploylib/src/com/android/fastdeploy/PatchUtils.java b/adb/fastdeploy/deploylib/src/com/android/fastdeploy/PatchUtils.java
deleted file mode 100644
index f0f00e1..0000000
--- a/adb/fastdeploy/deploylib/src/com/android/fastdeploy/PatchUtils.java
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.fastdeploy;
-
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.RandomAccessFile;
-import java.util.Arrays;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-
-import com.android.tools.build.apkzlib.zip.ZFile;
-import com.android.tools.build.apkzlib.zip.ZFileOptions;
-import com.android.tools.build.apkzlib.zip.StoredEntry;
-import com.android.tools.build.apkzlib.zip.StoredEntryType;
-import com.android.tools.build.apkzlib.zip.CentralDirectoryHeaderCompressInfo;
-import com.android.tools.build.apkzlib.zip.CentralDirectoryHeader;
-
-import com.android.fastdeploy.APKMetaData;
-import com.android.fastdeploy.APKEntry;
-
-class PatchUtils {
-    private static final long NEGATIVE_MASK = 1L << 63;
-    private static final long NEGATIVE_LONG_SIGN_MASK = 1L << 63;
-    public static final String SIGNATURE = "HAMADI/IHD";
-
-    private static long getOffsetFromEntry(StoredEntry entry) {
-        return entry.getCentralDirectoryHeader().getOffset() + entry.getLocalHeaderSize();
-    }
-
-    public static APKMetaData getAPKMetaData(File apkFile) throws IOException {
-        APKMetaData.Builder apkEntriesBuilder = APKMetaData.newBuilder();
-        ZFileOptions options = new ZFileOptions();
-        ZFile zFile = new ZFile(apkFile, options);
-
-        ArrayList<StoredEntry> metaDataEntries = new ArrayList<StoredEntry>();
-
-        for (StoredEntry entry : zFile.entries()) {
-            if (entry.getType() != StoredEntryType.FILE) {
-                continue;
-            }
-            metaDataEntries.add(entry);
-        }
-
-        Collections.sort(metaDataEntries, new Comparator<StoredEntry>() {
-            private long getOffsetFromEntry(StoredEntry entry) {
-                return PatchUtils.getOffsetFromEntry(entry);
-            }
-
-            @Override
-            public int compare(StoredEntry lhs, StoredEntry rhs) {
-                // -1 - less than, 1 - greater than, 0 - equal, all inversed for descending
-                return Long.compare(getOffsetFromEntry(lhs), getOffsetFromEntry(rhs));
-            }
-        });
-
-        for (StoredEntry entry : metaDataEntries) {
-            CentralDirectoryHeader cdh = entry.getCentralDirectoryHeader();
-            CentralDirectoryHeaderCompressInfo cdhci = cdh.getCompressionInfoWithWait();
-
-            APKEntry.Builder entryBuilder = APKEntry.newBuilder();
-            entryBuilder.setCrc32(cdh.getCrc32());
-            entryBuilder.setFileName(cdh.getName());
-            entryBuilder.setCompressedSize(cdhci.getCompressedSize());
-            entryBuilder.setUncompressedSize(cdh.getUncompressedSize());
-            entryBuilder.setDataOffset(getOffsetFromEntry(entry));
-
-            apkEntriesBuilder.addEntries(entryBuilder);
-            apkEntriesBuilder.build();
-        }
-        return apkEntriesBuilder.build();
-    }
-
-    /**
-     * Writes a 64-bit signed integer to the specified {@link OutputStream}. The least significant
-     * byte is written first and the most significant byte is written last.
-     * @param value the value to write
-     * @param outputStream the stream to write to
-     */
-    static void writeFormattedLong(final long value, OutputStream outputStream) throws IOException {
-        long y = value;
-        if (y < 0) {
-            y = (-y) | NEGATIVE_MASK;
-        }
-
-        for (int i = 0; i < 8; ++i) {
-            outputStream.write((byte) (y & 0xff));
-            y >>>= 8;
-        }
-    }
-
-    /**
-     * Reads a 64-bit signed integer written by {@link #writeFormattedLong(long, OutputStream)} from
-     * the specified {@link InputStream}.
-     * @param inputStream the stream to read from
-     */
-    static long readFormattedLong(InputStream inputStream) throws IOException {
-        long result = 0;
-        for (int bitshift = 0; bitshift < 64; bitshift += 8) {
-            result |= ((long) inputStream.read()) << bitshift;
-        }
-
-        if ((result - NEGATIVE_MASK) > 0) {
-            result = (result & ~NEGATIVE_MASK) * -1;
-        }
-        return result;
-    }
-
-    static final long readBsdiffLong(InputStream in) throws PatchFormatException, IOException {
-        long result = 0;
-        for (int bitshift = 0; bitshift < 64; bitshift += 8) {
-            result |= ((long) in.read()) << bitshift;
-        }
-
-        if (result == NEGATIVE_LONG_SIGN_MASK) {
-            // "Negative zero", which is valid in signed-magnitude format.
-            // NB: No sane patch generator should ever produce such a value.
-            throw new PatchFormatException("read negative zero");
-        }
-
-        if ((result & NEGATIVE_LONG_SIGN_MASK) != 0) {
-            result = -(result & ~NEGATIVE_LONG_SIGN_MASK);
-        }
-
-        return result;
-    }
-
-    static void readFully(final InputStream in, final byte[] destination, final int startAt,
-        final int numBytes) throws IOException {
-        int numRead = 0;
-        while (numRead < numBytes) {
-            int readNow = in.read(destination, startAt + numRead, numBytes - numRead);
-            if (readNow == -1) {
-                throw new IOException("truncated input stream");
-            }
-            numRead += readNow;
-        }
-    }
-
-    static void pipe(final InputStream in, final OutputStream out, final byte[] buffer,
-        long copyLength) throws IOException {
-        while (copyLength > 0) {
-            int maxCopy = Math.min(buffer.length, (int) copyLength);
-            readFully(in, buffer, 0, maxCopy);
-            out.write(buffer, 0, maxCopy);
-            copyLength -= maxCopy;
-        }
-    }
-
-    static void pipe(final RandomAccessFile in, final OutputStream out, final byte[] buffer,
-        long copyLength) throws IOException {
-        while (copyLength > 0) {
-            int maxCopy = Math.min(buffer.length, (int) copyLength);
-            in.readFully(buffer, 0, maxCopy);
-            out.write(buffer, 0, maxCopy);
-            copyLength -= maxCopy;
-        }
-    }
-
-    static void fill(byte value, final OutputStream out, final byte[] buffer, long fillLength)
-        throws IOException {
-        while (fillLength > 0) {
-            int maxCopy = Math.min(buffer.length, (int) fillLength);
-            Arrays.fill(buffer, 0, maxCopy, value);
-            out.write(buffer, 0, maxCopy);
-            fillLength -= maxCopy;
-        }
-    }
-}
diff --git a/adb/fastdeploy/deploypatchgenerator/apk_archive.cpp b/adb/fastdeploy/deploypatchgenerator/apk_archive.cpp
new file mode 100644
index 0000000..9da256e
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/apk_archive.cpp
@@ -0,0 +1,417 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define TRACE_TAG ADB
+
+#include "apk_archive.h"
+
+#include <inttypes.h>
+
+#include "adb_trace.h"
+#include "sysdeps.h"
+
+#include <android-base/endian.h>
+#include <android-base/mapped_file.h>
+
+#include <openssl/md5.h>
+
+constexpr uint16_t kCompressStored = 0;
+
+// mask value that signifies that the entry has a DD
+static const uint32_t kGPBDDFlagMask = 0x0008;
+
+namespace {
+struct FileRegion {
+    FileRegion(borrowed_fd fd, off64_t offset, size_t length)
+        : mapped_(android::base::MappedFile::FromOsHandle(adb_get_os_handle(fd), offset, length,
+                                                          PROT_READ)) {
+        if (mapped_ != nullptr) {
+            return;
+        }
+
+        // Mapped file failed, falling back to pread.
+        buffer_.resize(length);
+        if (auto err = adb_pread(fd.get(), buffer_.data(), length, offset); size_t(err) != length) {
+            fprintf(stderr, "Unable to read %lld bytes at offset %" PRId64 " \n",
+                    static_cast<long long>(length), offset);
+            buffer_.clear();
+            return;
+        }
+    }
+
+    const char* data() const { return mapped_ ? mapped_->data() : buffer_.data(); }
+    size_t size() const { return mapped_ ? mapped_->size() : buffer_.size(); }
+
+  private:
+    FileRegion() = default;
+    DISALLOW_COPY_AND_ASSIGN(FileRegion);
+
+    std::unique_ptr<android::base::MappedFile> mapped_;
+    std::string buffer_;
+};
+}  // namespace
+
+using com::android::fastdeploy::APKDump;
+
+ApkArchive::ApkArchive(const std::string& path) : path_(path), size_(0) {
+    fd_.reset(adb_open(path_.c_str(), O_RDONLY));
+    if (fd_ == -1) {
+        fprintf(stderr, "Unable to open file '%s'\n", path_.c_str());
+        return;
+    }
+
+    struct stat st;
+    if (stat(path_.c_str(), &st) == -1) {
+        fprintf(stderr, "Unable to stat file '%s'\n", path_.c_str());
+        return;
+    }
+    size_ = st.st_size;
+}
+
+ApkArchive::~ApkArchive() {}
+
+APKDump ApkArchive::ExtractMetadata() {
+    D("ExtractMetadata");
+    if (!ready()) {
+        return {};
+    }
+
+    Location cdLoc = GetCDLocation();
+    if (!cdLoc.valid) {
+        return {};
+    }
+
+    APKDump dump;
+    dump.set_absolute_path(path_);
+    dump.set_cd(ReadMetadata(cdLoc));
+
+    Location sigLoc = GetSignatureLocation(cdLoc.offset);
+    if (sigLoc.valid) {
+        dump.set_signature(ReadMetadata(sigLoc));
+    }
+    return dump;
+}
+
+off_t ApkArchive::FindEndOfCDRecord() const {
+    constexpr int endOfCDSignature = 0x06054b50;
+    constexpr off_t endOfCDMinSize = 22;
+    constexpr off_t endOfCDMaxSize = 65535 + endOfCDMinSize;
+
+    auto sizeToRead = std::min(size_, endOfCDMaxSize);
+    auto readOffset = size_ - sizeToRead;
+    FileRegion mapped(fd_, readOffset, sizeToRead);
+
+    // Start scanning from the end
+    auto* start = mapped.data();
+    auto* cursor = start + mapped.size() - sizeof(endOfCDSignature);
+
+    // Search for End of Central Directory record signature.
+    while (cursor >= start) {
+        if (*(int32_t*)cursor == endOfCDSignature) {
+            return readOffset + (cursor - start);
+        }
+        cursor--;
+    }
+    return -1;
+}
+
+ApkArchive::Location ApkArchive::FindCDRecord(const char* cursor) {
+    struct ecdr_t {
+        int32_t signature;
+        uint16_t diskNumber;
+        uint16_t numDisk;
+        uint16_t diskEntries;
+        uint16_t numEntries;
+        uint32_t crSize;
+        uint32_t offsetToCdHeader;
+        uint16_t commentSize;
+        uint8_t comment[0];
+    } __attribute__((packed));
+    ecdr_t* header = (ecdr_t*)cursor;
+
+    Location location;
+    location.offset = header->offsetToCdHeader;
+    location.size = header->crSize;
+    location.valid = true;
+    return location;
+}
+
+ApkArchive::Location ApkArchive::GetCDLocation() {
+    constexpr off_t cdEntryHeaderSizeBytes = 22;
+    Location location;
+
+    // Find End of Central Directory Record
+    off_t eocdRecord = FindEndOfCDRecord();
+    if (eocdRecord < 0) {
+        fprintf(stderr, "Unable to find End of Central Directory record in file '%s'\n",
+                path_.c_str());
+        return location;
+    }
+
+    // Find Central Directory Record
+    FileRegion mapped(fd_, eocdRecord, cdEntryHeaderSizeBytes);
+    location = FindCDRecord(mapped.data());
+    if (!location.valid) {
+        fprintf(stderr, "Unable to find Central Directory File Header in file '%s'\n",
+                path_.c_str());
+        return location;
+    }
+
+    return location;
+}
+
+ApkArchive::Location ApkArchive::GetSignatureLocation(off_t cdRecordOffset) {
+    Location location;
+
+    // Signature constants.
+    constexpr off_t endOfSignatureSize = 24;
+    off_t signatureOffset = cdRecordOffset - endOfSignatureSize;
+    if (signatureOffset < 0) {
+        fprintf(stderr, "Unable to find signature in file '%s'\n", path_.c_str());
+        return location;
+    }
+
+    FileRegion mapped(fd_, signatureOffset, endOfSignatureSize);
+
+    uint64_t signatureSize = *(uint64_t*)mapped.data();
+    auto* signature = mapped.data() + sizeof(signatureSize);
+    // Check if there is a v2/v3 Signature block here.
+    if (memcmp(signature, "APK Sig Block 42", 16)) {
+        return location;
+    }
+
+    // This is likely a signature block.
+    location.size = signatureSize;
+    location.offset = cdRecordOffset - location.size - 8;
+    location.valid = true;
+
+    return location;
+}
+
+std::string ApkArchive::ReadMetadata(Location loc) const {
+    FileRegion mapped(fd_, loc.offset, loc.size);
+    return {mapped.data(), mapped.size()};
+}
+
+size_t ApkArchive::ParseCentralDirectoryRecord(const char* input, size_t size, std::string* md5Hash,
+                                               int64_t* localFileHeaderOffset, int64_t* dataSize) {
+    // A structure representing the fixed length fields for a single
+    // record in the central directory of the archive. In addition to
+    // the fixed length fields listed here, each central directory
+    // record contains a variable length "file_name" and "extra_field"
+    // whose lengths are given by |file_name_length| and |extra_field_length|
+    // respectively.
+    static constexpr int kCDFileHeaderMagic = 0x02014b50;
+    struct CentralDirectoryRecord {
+        // The start of record signature. Must be |kSignature|.
+        uint32_t record_signature;
+        // Source tool version. Top byte gives source OS.
+        uint16_t version_made_by;
+        // Tool version. Ignored by this implementation.
+        uint16_t version_needed;
+        // The "general purpose bit flags" for this entry. The only
+        // flag value that we currently check for is the "data descriptor"
+        // flag.
+        uint16_t gpb_flags;
+        // The compression method for this entry, one of |kCompressStored|
+        // and |kCompressDeflated|.
+        uint16_t compression_method;
+        // The file modification time and date for this entry.
+        uint16_t last_mod_time;
+        uint16_t last_mod_date;
+        // The CRC-32 checksum for this entry.
+        uint32_t crc32;
+        // The compressed size (in bytes) of this entry.
+        uint32_t compressed_size;
+        // The uncompressed size (in bytes) of this entry.
+        uint32_t uncompressed_size;
+        // The length of the entry file name in bytes. The file name
+        // will appear immediately after this record.
+        uint16_t file_name_length;
+        // The length of the extra field info (in bytes). This data
+        // will appear immediately after the entry file name.
+        uint16_t extra_field_length;
+        // The length of the entry comment (in bytes). This data will
+        // appear immediately after the extra field.
+        uint16_t comment_length;
+        // The start disk for this entry. Ignored by this implementation).
+        uint16_t file_start_disk;
+        // File attributes. Ignored by this implementation.
+        uint16_t internal_file_attributes;
+        // File attributes. For archives created on Unix, the top bits are the
+        // mode.
+        uint32_t external_file_attributes;
+        // The offset to the local file header for this entry, from the
+        // beginning of this archive.
+        uint32_t local_file_header_offset;
+
+      private:
+        CentralDirectoryRecord() = default;
+        DISALLOW_COPY_AND_ASSIGN(CentralDirectoryRecord);
+    } __attribute__((packed));
+
+    const CentralDirectoryRecord* cdr;
+    if (size < sizeof(*cdr)) {
+        return 0;
+    }
+
+    auto begin = input;
+    cdr = reinterpret_cast<const CentralDirectoryRecord*>(begin);
+    if (cdr->record_signature != kCDFileHeaderMagic) {
+        fprintf(stderr, "Invalid Central Directory Record signature\n");
+        return 0;
+    }
+    auto end = begin + sizeof(*cdr) + cdr->file_name_length + cdr->extra_field_length +
+               cdr->comment_length;
+
+    uint8_t md5Digest[MD5_DIGEST_LENGTH];
+    MD5((const unsigned char*)begin, end - begin, md5Digest);
+    md5Hash->assign((const char*)md5Digest, sizeof(md5Digest));
+
+    *localFileHeaderOffset = cdr->local_file_header_offset;
+    *dataSize = (cdr->compression_method == kCompressStored) ? cdr->uncompressed_size
+                                                             : cdr->compressed_size;
+
+    return end - begin;
+}
+
+size_t ApkArchive::CalculateLocalFileEntrySize(int64_t localFileHeaderOffset,
+                                               int64_t dataSize) const {
+    // The local file header for a given entry. This duplicates information
+    // present in the central directory of the archive. It is an error for
+    // the information here to be different from the central directory
+    // information for a given entry.
+    static constexpr int kLocalFileHeaderMagic = 0x04034b50;
+    struct LocalFileHeader {
+        // The local file header signature, must be |kSignature|.
+        uint32_t lfh_signature;
+        // Tool version. Ignored by this implementation.
+        uint16_t version_needed;
+        // The "general purpose bit flags" for this entry. The only
+        // flag value that we currently check for is the "data descriptor"
+        // flag.
+        uint16_t gpb_flags;
+        // The compression method for this entry, one of |kCompressStored|
+        // and |kCompressDeflated|.
+        uint16_t compression_method;
+        // The file modification time and date for this entry.
+        uint16_t last_mod_time;
+        uint16_t last_mod_date;
+        // The CRC-32 checksum for this entry.
+        uint32_t crc32;
+        // The compressed size (in bytes) of this entry.
+        uint32_t compressed_size;
+        // The uncompressed size (in bytes) of this entry.
+        uint32_t uncompressed_size;
+        // The length of the entry file name in bytes. The file name
+        // will appear immediately after this record.
+        uint16_t file_name_length;
+        // The length of the extra field info (in bytes). This data
+        // will appear immediately after the entry file name.
+        uint16_t extra_field_length;
+
+      private:
+        LocalFileHeader() = default;
+        DISALLOW_COPY_AND_ASSIGN(LocalFileHeader);
+    } __attribute__((packed));
+    static constexpr int kLocalFileHeaderSize = sizeof(LocalFileHeader);
+    CHECK(ready()) << path_;
+
+    const LocalFileHeader* lfh;
+    if (localFileHeaderOffset + kLocalFileHeaderSize > size_) {
+        fprintf(stderr,
+                "Invalid Local File Header offset in file '%s' at offset %lld, file size %lld\n",
+                path_.c_str(), static_cast<long long>(localFileHeaderOffset),
+                static_cast<long long>(size_));
+        return 0;
+    }
+
+    FileRegion lfhMapped(fd_, localFileHeaderOffset, sizeof(LocalFileHeader));
+    lfh = reinterpret_cast<const LocalFileHeader*>(lfhMapped.data());
+    if (lfh->lfh_signature != kLocalFileHeaderMagic) {
+        fprintf(stderr, "Invalid Local File Header signature in file '%s' at offset %lld\n",
+                path_.c_str(), static_cast<long long>(localFileHeaderOffset));
+        return 0;
+    }
+
+    // The *optional* data descriptor start signature.
+    static constexpr int kOptionalDataDescriptorMagic = 0x08074b50;
+    struct DataDescriptor {
+        // CRC-32 checksum of the entry.
+        uint32_t crc32;
+        // Compressed size of the entry.
+        uint32_t compressed_size;
+        // Uncompressed size of the entry.
+        uint32_t uncompressed_size;
+
+      private:
+        DataDescriptor() = default;
+        DISALLOW_COPY_AND_ASSIGN(DataDescriptor);
+    } __attribute__((packed));
+    static constexpr int kDataDescriptorSize = sizeof(DataDescriptor);
+
+    off_t ddOffset = localFileHeaderOffset + kLocalFileHeaderSize + lfh->file_name_length +
+                     lfh->extra_field_length + dataSize;
+    int64_t ddSize = 0;
+
+    int64_t localDataSize;
+    if (lfh->gpb_flags & kGPBDDFlagMask) {
+        // There is trailing data descriptor.
+        const DataDescriptor* dd;
+
+        if (ddOffset + int(sizeof(uint32_t)) > size_) {
+            fprintf(stderr,
+                    "Error reading trailing data descriptor signature in file '%s' at offset %lld, "
+                    "file size %lld\n",
+                    path_.c_str(), static_cast<long long>(ddOffset), static_cast<long long>(size_));
+            return 0;
+        }
+
+        FileRegion ddMapped(fd_, ddOffset, sizeof(uint32_t) + sizeof(DataDescriptor));
+
+        off_t localDDOffset = 0;
+        if (kOptionalDataDescriptorMagic == *(uint32_t*)ddMapped.data()) {
+            ddOffset += sizeof(uint32_t);
+            localDDOffset += sizeof(uint32_t);
+            ddSize += sizeof(uint32_t);
+        }
+        if (ddOffset + kDataDescriptorSize > size_) {
+            fprintf(stderr,
+                    "Error reading trailing data descriptor in file '%s' at offset %lld, file size "
+                    "%lld\n",
+                    path_.c_str(), static_cast<long long>(ddOffset), static_cast<long long>(size_));
+            return 0;
+        }
+
+        dd = reinterpret_cast<const DataDescriptor*>(ddMapped.data() + localDDOffset);
+        localDataSize = (lfh->compression_method == kCompressStored) ? dd->uncompressed_size
+                                                                     : dd->compressed_size;
+        ddSize += sizeof(*dd);
+    } else {
+        localDataSize = (lfh->compression_method == kCompressStored) ? lfh->uncompressed_size
+                                                                     : lfh->compressed_size;
+    }
+    if (localDataSize != dataSize) {
+        fprintf(stderr,
+                "Data sizes mismatch in file '%s' at offset %lld, CDr: %lld vs LHR/DD: %lld\n",
+                path_.c_str(), static_cast<long long>(localFileHeaderOffset),
+                static_cast<long long>(dataSize), static_cast<long long>(localDataSize));
+        return 0;
+    }
+
+    return kLocalFileHeaderSize + lfh->file_name_length + lfh->extra_field_length + dataSize +
+           ddSize;
+}
diff --git a/adb/fastdeploy/deploypatchgenerator/apk_archive.h b/adb/fastdeploy/deploypatchgenerator/apk_archive.h
new file mode 100644
index 0000000..7127800
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/apk_archive.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <adb_unique_fd.h>
+
+#include "fastdeploy/proto/ApkEntry.pb.h"
+
+class ApkArchiveTester;
+
+// Manipulates an APK archive. Process it by mmaping it in order to minimize
+// I/Os.
+class ApkArchive {
+  public:
+    friend ApkArchiveTester;
+
+    // A convenience struct to store the result of search operation when
+    // locating the EoCDr, CDr, and Signature Block.
+    struct Location {
+        off_t offset = 0;
+        off_t size = 0;
+        bool valid = false;
+    };
+
+    ApkArchive(const std::string& path);
+    ~ApkArchive();
+
+    com::android::fastdeploy::APKDump ExtractMetadata();
+
+    // Parses the CDr starting from |input| and returns number of bytes consumed.
+    // Extracts local file header offset, data size and calculates MD5 hash of the record.
+    // 0 indicates invalid CDr.
+    static size_t ParseCentralDirectoryRecord(const char* input, size_t size, std::string* md5Hash,
+                                              int64_t* localFileHeaderOffset, int64_t* dataSize);
+    // Calculates Local File Entry size including header using offset and data size from CDr.
+    // 0 indicates invalid Local File Entry.
+    size_t CalculateLocalFileEntrySize(int64_t localFileHeaderOffset, int64_t dataSize) const;
+
+  private:
+    std::string ReadMetadata(Location loc) const;
+
+    // Retrieve the location of the Central Directory Record.
+    Location GetCDLocation();
+
+    // Retrieve the location of the signature block starting from Central
+    // Directory Record
+    Location GetSignatureLocation(off_t cdRecordOffset);
+
+    // Find the End of Central Directory Record, starting from the end of the
+    // file.
+    off_t FindEndOfCDRecord() const;
+
+    // Find Central Directory Record, starting from the end of the file.
+    Location FindCDRecord(const char* cursor);
+
+    // Checks if the archive can be used.
+    bool ready() const { return fd_ >= 0; }
+
+    std::string path_;
+    off_t size_;
+    unique_fd fd_;
+};
diff --git a/adb/fastdeploy/deploypatchgenerator/apk_archive_test.cpp b/adb/fastdeploy/deploypatchgenerator/apk_archive_test.cpp
new file mode 100644
index 0000000..554cb57
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/apk_archive_test.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <iostream>
+
+#include <gtest/gtest.h>
+
+#include "apk_archive.h"
+
+// Friend test to get around private scope of ApkArchive private functions.
+class ApkArchiveTester {
+  public:
+    ApkArchiveTester(const std::string& path) : archive_(path) {}
+
+    bool ready() { return archive_.ready(); }
+
+    auto ExtractMetadata() { return archive_.ExtractMetadata(); }
+
+    ApkArchive::Location GetCDLocation() { return archive_.GetCDLocation(); }
+    ApkArchive::Location GetSignatureLocation(size_t start) {
+        return archive_.GetSignatureLocation(start);
+    }
+
+  private:
+    ApkArchive archive_;
+};
+
+TEST(ApkArchiveTest, TestApkArchiveSizes) {
+    ApkArchiveTester archiveTester("fastdeploy/testdata/sample.apk");
+    EXPECT_TRUE(archiveTester.ready());
+
+    ApkArchive::Location cdLoc = archiveTester.GetCDLocation();
+    EXPECT_TRUE(cdLoc.valid);
+    ASSERT_EQ(cdLoc.offset, 2044145u);
+    ASSERT_EQ(cdLoc.size, 49390u);
+
+    // Check that block can be retrieved
+    ApkArchive::Location sigLoc = archiveTester.GetSignatureLocation(cdLoc.offset);
+    EXPECT_TRUE(sigLoc.valid);
+    ASSERT_EQ(sigLoc.offset, 2040049u);
+    ASSERT_EQ(sigLoc.size, 4088u);
+}
+
+TEST(ApkArchiveTest, TestApkArchiveDump) {
+    ApkArchiveTester archiveTester("fastdeploy/testdata/sample.apk");
+    EXPECT_TRUE(archiveTester.ready());
+
+    auto dump = archiveTester.ExtractMetadata();
+    ASSERT_EQ(dump.cd().size(), 49390u);
+    ASSERT_EQ(dump.signature().size(), 4088u);
+}
+
+TEST(ApkArchiveTest, WrongApk) {
+    ApkArchiveTester archiveTester("fastdeploy/testdata/sample.cd");
+    EXPECT_TRUE(archiveTester.ready());
+
+    auto dump = archiveTester.ExtractMetadata();
+    ASSERT_EQ(dump.cd().size(), 0u);
+    ASSERT_EQ(dump.signature().size(), 0u);
+}
diff --git a/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator.cpp b/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator.cpp
new file mode 100644
index 0000000..8aa7da7
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator.cpp
@@ -0,0 +1,255 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "deploy_patch_generator.h"
+
+#include <inttypes.h>
+#include <stdio.h>
+
+#include <algorithm>
+#include <fstream>
+#include <functional>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <unordered_map>
+
+#include <openssl/md5.h>
+
+#include "adb_unique_fd.h"
+#include "adb_utils.h"
+#include "android-base/file.h"
+#include "patch_utils.h"
+#include "sysdeps.h"
+
+using namespace com::android::fastdeploy;
+
+void DeployPatchGenerator::Log(const char* fmt, ...) {
+    va_list ap;
+    va_start(ap, fmt);
+    vprintf(fmt, ap);
+    printf("\n");
+    va_end(ap);
+}
+
+static std::string HexEncode(const void* in_buffer, unsigned int size) {
+    static const char kHexChars[] = "0123456789ABCDEF";
+
+    // Each input byte creates two output hex characters.
+    std::string out_buffer(size * 2, '\0');
+
+    for (unsigned int i = 0; i < size; ++i) {
+        char byte = ((const uint8_t*)in_buffer)[i];
+        out_buffer[(i << 1)] = kHexChars[(byte >> 4) & 0xf];
+        out_buffer[(i << 1) + 1] = kHexChars[byte & 0xf];
+    }
+    return out_buffer;
+}
+
+void DeployPatchGenerator::APKEntryToLog(const APKEntry& entry) {
+    if (!is_verbose_) {
+        return;
+    }
+    Log("MD5: %s", HexEncode(entry.md5().data(), entry.md5().size()).c_str());
+    Log("Data Offset: %" PRId64, entry.dataoffset());
+    Log("Data Size: %" PRId64, entry.datasize());
+}
+
+void DeployPatchGenerator::APKMetaDataToLog(const APKMetaData& metadata) {
+    if (!is_verbose_) {
+        return;
+    }
+    Log("APK Metadata: %s", metadata.absolute_path().c_str());
+    for (int i = 0; i < metadata.entries_size(); i++) {
+        const APKEntry& entry = metadata.entries(i);
+        APKEntryToLog(entry);
+    }
+}
+
+void DeployPatchGenerator::ReportSavings(const std::vector<SimpleEntry>& identicalEntries,
+                                         uint64_t totalSize) {
+    uint64_t totalEqualBytes = 0;
+    uint64_t totalEqualFiles = 0;
+    for (size_t i = 0; i < identicalEntries.size(); i++) {
+        if (identicalEntries[i].deviceEntry != nullptr) {
+            totalEqualBytes += identicalEntries[i].localEntry->datasize();
+            totalEqualFiles++;
+        }
+    }
+    double savingPercent = (totalEqualBytes * 100.0f) / totalSize;
+    fprintf(stderr, "Detected %" PRIu64 " equal APK entries\n", totalEqualFiles);
+    fprintf(stderr, "%" PRIu64 " bytes are equal out of %" PRIu64 " (%.2f%%)\n", totalEqualBytes,
+            totalSize, savingPercent);
+}
+
+struct PatchEntry {
+    int64_t deltaFromDeviceDataStart = 0;
+    int64_t deviceDataOffset = 0;
+    int64_t deviceDataLength = 0;
+};
+static void WritePatchEntry(const PatchEntry& patchEntry, borrowed_fd input, borrowed_fd output,
+                            size_t* realSizeOut) {
+    if (!(patchEntry.deltaFromDeviceDataStart | patchEntry.deviceDataOffset |
+          patchEntry.deviceDataLength)) {
+        return;
+    }
+
+    PatchUtils::WriteLong(patchEntry.deltaFromDeviceDataStart, output);
+    if (patchEntry.deltaFromDeviceDataStart > 0) {
+        PatchUtils::Pipe(input, output, patchEntry.deltaFromDeviceDataStart);
+    }
+    auto hostDataLength = patchEntry.deviceDataLength;
+    adb_lseek(input, hostDataLength, SEEK_CUR);
+
+    PatchUtils::WriteLong(patchEntry.deviceDataOffset, output);
+    PatchUtils::WriteLong(patchEntry.deviceDataLength, output);
+
+    *realSizeOut += patchEntry.deltaFromDeviceDataStart + hostDataLength;
+}
+
+void DeployPatchGenerator::GeneratePatch(const std::vector<SimpleEntry>& entriesToUseOnDevice,
+                                         const std::string& localApkPath,
+                                         const std::string& deviceApkPath, borrowed_fd output) {
+    unique_fd input(adb_open(localApkPath.c_str(), O_RDONLY | O_CLOEXEC));
+    size_t newApkSize = adb_lseek(input, 0L, SEEK_END);
+    adb_lseek(input, 0L, SEEK_SET);
+
+    // Header.
+    PatchUtils::WriteSignature(output);
+    PatchUtils::WriteLong(newApkSize, output);
+    PatchUtils::WriteString(deviceApkPath, output);
+
+    size_t currentSizeOut = 0;
+    size_t realSizeOut = 0;
+    // Write data from the host upto the first entry we have that matches a device entry. Then write
+    // the metadata about the device entry and repeat for all entries that match on device. Finally
+    // write out any data left. If the device and host APKs are exactly the same this ends up
+    // writing out zip metadata from the local APK followed by offsets to the data to use from the
+    // device APK.
+    PatchEntry patchEntry;
+    for (size_t i = 0, size = entriesToUseOnDevice.size(); i < size; ++i) {
+        auto&& entry = entriesToUseOnDevice[i];
+        int64_t hostDataOffset = entry.localEntry->dataoffset();
+        int64_t hostDataLength = entry.localEntry->datasize();
+        int64_t deviceDataOffset = entry.deviceEntry->dataoffset();
+        // Both entries are the same, using host data length.
+        int64_t deviceDataLength = hostDataLength;
+
+        int64_t deltaFromDeviceDataStart = hostDataOffset - currentSizeOut;
+        if (deltaFromDeviceDataStart > 0) {
+            WritePatchEntry(patchEntry, input, output, &realSizeOut);
+            patchEntry.deltaFromDeviceDataStart = deltaFromDeviceDataStart;
+            patchEntry.deviceDataOffset = deviceDataOffset;
+            patchEntry.deviceDataLength = deviceDataLength;
+        } else {
+            patchEntry.deviceDataLength += deviceDataLength;
+        }
+
+        currentSizeOut += deltaFromDeviceDataStart + hostDataLength;
+    }
+    WritePatchEntry(patchEntry, input, output, &realSizeOut);
+    if (realSizeOut != currentSizeOut) {
+        fprintf(stderr, "Size mismatch current %lld vs real %lld\n",
+                static_cast<long long>(currentSizeOut), static_cast<long long>(realSizeOut));
+        error_exit("Aborting");
+    }
+
+    if (newApkSize > currentSizeOut) {
+        PatchUtils::WriteLong(newApkSize - currentSizeOut, output);
+        PatchUtils::Pipe(input, output, newApkSize - currentSizeOut);
+        PatchUtils::WriteLong(0, output);
+        PatchUtils::WriteLong(0, output);
+    }
+}
+
+bool DeployPatchGenerator::CreatePatch(const char* localApkPath, APKMetaData deviceApkMetadata,
+                                       android::base::borrowed_fd output) {
+    return CreatePatch(PatchUtils::GetHostAPKMetaData(localApkPath), std::move(deviceApkMetadata),
+                       output);
+}
+
+bool DeployPatchGenerator::CreatePatch(APKMetaData localApkMetadata, APKMetaData deviceApkMetadata,
+                                       borrowed_fd output) {
+    // Log metadata info.
+    APKMetaDataToLog(deviceApkMetadata);
+    APKMetaDataToLog(localApkMetadata);
+
+    const std::string localApkPath = localApkMetadata.absolute_path();
+    const std::string deviceApkPath = deviceApkMetadata.absolute_path();
+
+    std::vector<SimpleEntry> identicalEntries;
+    uint64_t totalSize =
+            BuildIdenticalEntries(identicalEntries, localApkMetadata, deviceApkMetadata);
+    ReportSavings(identicalEntries, totalSize);
+    GeneratePatch(identicalEntries, localApkPath, deviceApkPath, output);
+
+    return true;
+}
+
+uint64_t DeployPatchGenerator::BuildIdenticalEntries(std::vector<SimpleEntry>& outIdenticalEntries,
+                                                     const APKMetaData& localApkMetadata,
+                                                     const APKMetaData& deviceApkMetadata) {
+    outIdenticalEntries.reserve(
+            std::min(localApkMetadata.entries_size(), deviceApkMetadata.entries_size()));
+
+    using md5Digest = std::pair<uint64_t, uint64_t>;
+    struct md5Hash {
+        size_t operator()(const md5Digest& digest) const {
+            std::hash<uint64_t> hasher;
+            size_t seed = 0;
+            seed ^= hasher(digest.first) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
+            seed ^= hasher(digest.second) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
+            return seed;
+        }
+    };
+    static_assert(sizeof(md5Digest) == MD5_DIGEST_LENGTH);
+    std::unordered_map<md5Digest, std::vector<const APKEntry*>, md5Hash> deviceEntries;
+    for (const auto& deviceEntry : deviceApkMetadata.entries()) {
+        md5Digest md5;
+        memcpy(&md5, deviceEntry.md5().data(), deviceEntry.md5().size());
+
+        deviceEntries[md5].push_back(&deviceEntry);
+    }
+
+    uint64_t totalSize = 0;
+    for (const auto& localEntry : localApkMetadata.entries()) {
+        totalSize += localEntry.datasize();
+
+        md5Digest md5;
+        memcpy(&md5, localEntry.md5().data(), localEntry.md5().size());
+
+        auto deviceEntriesIt = deviceEntries.find(md5);
+        if (deviceEntriesIt == deviceEntries.end()) {
+            continue;
+        }
+
+        for (const auto* deviceEntry : deviceEntriesIt->second) {
+            if (deviceEntry->md5() == localEntry.md5()) {
+                SimpleEntry simpleEntry;
+                simpleEntry.localEntry = &localEntry;
+                simpleEntry.deviceEntry = deviceEntry;
+                APKEntryToLog(localEntry);
+                outIdenticalEntries.push_back(simpleEntry);
+                break;
+            }
+        }
+    }
+    std::sort(outIdenticalEntries.begin(), outIdenticalEntries.end(),
+              [](const SimpleEntry& lhs, const SimpleEntry& rhs) {
+                  return lhs.localEntry->dataoffset() < rhs.localEntry->dataoffset();
+              });
+    return totalSize;
+}
diff --git a/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator.h b/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator.h
new file mode 100644
index 0000000..fd7eaee
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <vector>
+
+#include "adb_unique_fd.h"
+#include "fastdeploy/proto/ApkEntry.pb.h"
+
+/**
+ * This class is responsible for creating a patch that can be accepted by the deployagent. The
+ * patch format is documented in GeneratePatch.
+ */
+class DeployPatchGenerator {
+  public:
+    using APKEntry = com::android::fastdeploy::APKEntry;
+    using APKMetaData = com::android::fastdeploy::APKMetaData;
+
+    /**
+     * Simple struct to hold mapping between local metadata and device metadata.
+     */
+    struct SimpleEntry {
+        const APKEntry* localEntry;
+        const APKEntry* deviceEntry;
+    };
+
+    /**
+     * If |is_verbose| is true ApkEntries that are similar between device and host are written to
+     * the console.
+     */
+    explicit DeployPatchGenerator(bool is_verbose) : is_verbose_(is_verbose) {}
+    /**
+     * Given a |localApkPath|, and the |deviceApkMetadata| from an installed APK this function
+     * writes a patch to the given |output|.
+     */
+    bool CreatePatch(const char* localApkPath, APKMetaData deviceApkMetadata,
+                     android::base::borrowed_fd output);
+
+  private:
+    bool is_verbose_;
+
+    /**
+     * Log function only logs data to stdout when |is_verbose_| is true.
+     */
+    void Log(const char* fmt, ...) __attribute__((__format__(__printf__, 2, 3)));
+
+    /**
+     * Helper function to log the APKMetaData structure. If |is_verbose_| is false this function
+     * early outs. This function is used for debugging / information.
+     */
+    void APKMetaDataToLog(const APKMetaData& metadata);
+    /**
+     * Helper function to log APKEntry.
+     */
+    void APKEntryToLog(const APKEntry& entry);
+
+    /**
+     * Given the |localApkMetadata| metadata, and the |deviceApkMetadata| from an installed APK this
+     * function writes a patch to the given |output|.
+     */
+    bool CreatePatch(APKMetaData localApkMetadata, APKMetaData deviceApkMetadata,
+                     android::base::borrowed_fd output);
+
+    /**
+     * Helper function to report savings by fastdeploy. This function prints out savings even with
+     * |is_verbose_| set to false. |totalSize| is used to show a percentage of savings. Note:
+     * |totalSize| is the size of the ZipEntries. Not the size of the entire file. The metadata of
+     * the zip data needs to be sent across with every iteration.
+     * [Patch format]
+     * |Fixed String| Signature
+     * |long|         New Size of Apk
+     * |Packets[]|    Array of Packets
+     *
+     * [Packet Format]
+     * |long|     Size of data to use from patch
+     * |byte[]|   Patch data
+     * |long|     Offset of data to use already on device
+     * |long|     Length of data to read from device APK
+     * TODO(b/138306784): Move the patch format to a proto.
+     */
+    void ReportSavings(const std::vector<SimpleEntry>& identicalEntries, uint64_t totalSize);
+
+    /**
+     * This enumerates each entry in |entriesToUseOnDevice| and builds a patch file copying data
+     * from |localApkPath| where we are unable to use entries already on the device. The new patch
+     * is written to |output|. The entries are expected to be sorted by data offset from lowest to
+     * highest.
+     */
+    void GeneratePatch(const std::vector<SimpleEntry>& entriesToUseOnDevice,
+                       const std::string& localApkPath, const std::string& deviceApkPath,
+                       android::base::borrowed_fd output);
+
+  protected:
+    uint64_t BuildIdenticalEntries(std::vector<SimpleEntry>& outIdenticalEntries,
+                                   const APKMetaData& localApkMetadata,
+                                   const APKMetaData& deviceApkMetadata);
+};
diff --git a/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator_test.cpp b/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator_test.cpp
new file mode 100644
index 0000000..e4c96ea
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/deploy_patch_generator_test.cpp
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "deploy_patch_generator.h"
+#include "apk_archive.h"
+#include "patch_utils.h"
+
+#include <android-base/file.h>
+#include <gtest/gtest.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+
+#include "sysdeps.h"
+
+using namespace com::android::fastdeploy;
+
+static std::string GetTestFile(const std::string& name) {
+    return "fastdeploy/testdata/" + name;
+}
+
+struct TestPatchGenerator : DeployPatchGenerator {
+    using DeployPatchGenerator::BuildIdenticalEntries;
+    using DeployPatchGenerator::DeployPatchGenerator;
+};
+
+TEST(DeployPatchGeneratorTest, IdenticalFileEntries) {
+    std::string apkPath = GetTestFile("rotating_cube-release.apk");
+    APKMetaData metadataA = PatchUtils::GetHostAPKMetaData(apkPath.c_str());
+    TestPatchGenerator generator(false);
+    std::vector<DeployPatchGenerator::SimpleEntry> entries;
+    generator.BuildIdenticalEntries(entries, metadataA, metadataA);
+    // Expect the entry count to match the number of entries in the metadata.
+    const uint32_t identicalCount = entries.size();
+    const uint32_t entriesCount = metadataA.entries_size();
+    EXPECT_EQ(identicalCount, entriesCount);
+}
+
+TEST(DeployPatchGeneratorTest, NoDeviceMetadata) {
+    std::string apkPath = GetTestFile("rotating_cube-release.apk");
+    // Get size of our test apk.
+    long apkSize = 0;
+    {
+        unique_fd apkFile(adb_open(apkPath.c_str(), O_RDWR));
+        apkSize = adb_lseek(apkFile, 0L, SEEK_END);
+    }
+
+    // Create a patch that is 100% different.
+    TemporaryFile output;
+    DeployPatchGenerator generator(true);
+    generator.CreatePatch(apkPath.c_str(), {}, output.fd);
+
+    // Expect a patch file that has a size at least the size of our initial APK.
+    long patchSize = adb_lseek(output.fd, 0L, SEEK_END);
+    EXPECT_GT(patchSize, apkSize);
+}
+
+TEST(DeployPatchGeneratorTest, ZeroSizePatch) {
+    std::string apkPath = GetTestFile("rotating_cube-release.apk");
+    ApkArchive archive(apkPath);
+    auto dump = archive.ExtractMetadata();
+    EXPECT_NE(dump.cd().size(), 0u);
+
+    APKMetaData metadata = PatchUtils::GetDeviceAPKMetaData(dump);
+
+    // Create a patch that is 100% the same.
+    TemporaryFile output;
+    output.DoNotRemove();
+    DeployPatchGenerator generator(true);
+    generator.CreatePatch(apkPath.c_str(), metadata, output.fd);
+
+    // Expect a patch file that is smaller than 0.5K.
+    int64_t patchSize = adb_lseek(output.fd, 0L, SEEK_END);
+    EXPECT_LE(patchSize, 512);
+}
diff --git a/adb/fastdeploy/deploypatchgenerator/manifest.txt b/adb/fastdeploy/deploypatchgenerator/manifest.txt
deleted file mode 100644
index 5c00505..0000000
--- a/adb/fastdeploy/deploypatchgenerator/manifest.txt
+++ /dev/null
@@ -1 +0,0 @@
-Main-Class: com.android.fastdeploy.DeployPatchGenerator
diff --git a/adb/fastdeploy/deploypatchgenerator/patch_utils.cpp b/adb/fastdeploy/deploypatchgenerator/patch_utils.cpp
new file mode 100644
index 0000000..2b00c80
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/patch_utils.cpp
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "patch_utils.h"
+
+#include <stdio.h>
+
+#include "adb_io.h"
+#include "adb_utils.h"
+#include "android-base/endian.h"
+#include "sysdeps.h"
+
+#include "apk_archive.h"
+
+using namespace com::android;
+using namespace com::android::fastdeploy;
+using namespace android::base;
+
+static constexpr char kSignature[] = "FASTDEPLOY";
+
+APKMetaData PatchUtils::GetDeviceAPKMetaData(const APKDump& apk_dump) {
+    APKMetaData apkMetaData;
+    apkMetaData.set_absolute_path(apk_dump.absolute_path());
+
+    std::string md5Hash;
+    int64_t localFileHeaderOffset;
+    int64_t dataSize;
+
+    const auto& cd = apk_dump.cd();
+    auto cur = cd.data();
+    int64_t size = cd.size();
+    while (auto consumed = ApkArchive::ParseCentralDirectoryRecord(
+                   cur, size, &md5Hash, &localFileHeaderOffset, &dataSize)) {
+        cur += consumed;
+        size -= consumed;
+
+        auto apkEntry = apkMetaData.add_entries();
+        apkEntry->set_md5(md5Hash);
+        apkEntry->set_dataoffset(localFileHeaderOffset);
+        apkEntry->set_datasize(dataSize);
+    }
+    return apkMetaData;
+}
+
+APKMetaData PatchUtils::GetHostAPKMetaData(const char* apkPath) {
+    ApkArchive archive(apkPath);
+    auto dump = archive.ExtractMetadata();
+    if (dump.cd().empty()) {
+        fprintf(stderr, "adb: Could not extract Central Directory from %s\n", apkPath);
+        error_exit("Aborting");
+    }
+
+    auto apkMetaData = GetDeviceAPKMetaData(dump);
+
+    // Now let's set data sizes.
+    for (auto& apkEntry : *apkMetaData.mutable_entries()) {
+        auto dataSize =
+                archive.CalculateLocalFileEntrySize(apkEntry.dataoffset(), apkEntry.datasize());
+        if (dataSize == 0) {
+            error_exit("Aborting");
+        }
+        apkEntry.set_datasize(dataSize);
+    }
+
+    return apkMetaData;
+}
+
+void PatchUtils::WriteSignature(borrowed_fd output) {
+    WriteFdExactly(output, kSignature, sizeof(kSignature) - 1);
+}
+
+void PatchUtils::WriteLong(int64_t value, borrowed_fd output) {
+    int64_t littleEndian = htole64(value);
+    WriteFdExactly(output, &littleEndian, sizeof(littleEndian));
+}
+
+void PatchUtils::WriteString(const std::string& value, android::base::borrowed_fd output) {
+    WriteLong(value.size(), output);
+    WriteFdExactly(output, value);
+}
+
+void PatchUtils::Pipe(borrowed_fd input, borrowed_fd output, size_t amount) {
+    constexpr static size_t BUFFER_SIZE = 128 * 1024;
+    char buffer[BUFFER_SIZE];
+    size_t transferAmount = 0;
+    while (transferAmount != amount) {
+        auto chunkAmount = std::min(amount - transferAmount, BUFFER_SIZE);
+        auto readAmount = adb_read(input, buffer, chunkAmount);
+        if (readAmount < 0) {
+            fprintf(stderr, "adb: failed to read from input: %s\n", strerror(errno));
+            error_exit("Aborting");
+        }
+        WriteFdExactly(output, buffer, readAmount);
+        transferAmount += readAmount;
+    }
+}
diff --git a/adb/fastdeploy/deploypatchgenerator/patch_utils.h b/adb/fastdeploy/deploypatchgenerator/patch_utils.h
new file mode 100644
index 0000000..8dc9b9c
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/patch_utils.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "adb_unique_fd.h"
+#include "fastdeploy/proto/ApkEntry.pb.h"
+
+/**
+ * Helper class that mirrors the PatchUtils from deploy agent.
+ */
+class PatchUtils {
+  public:
+    /**
+     * This function takes the dump of Central Directly and builds the APKMetaData required by the
+     * patching algorithm. The if this function has an error a string is printed to the terminal and
+     * exit(1) is called.
+     */
+    static com::android::fastdeploy::APKMetaData GetDeviceAPKMetaData(
+            const com::android::fastdeploy::APKDump& apk_dump);
+    /**
+     * This function takes a local APK file and builds the APKMetaData required by the patching
+     * algorithm. The if this function has an error a string is printed to the terminal and exit(1)
+     * is called.
+     */
+    static com::android::fastdeploy::APKMetaData GetHostAPKMetaData(const char* file);
+    /**
+     * Writes a fixed signature string to the header of the patch.
+     */
+    static void WriteSignature(android::base::borrowed_fd output);
+    /**
+     * Writes an int64 to the |output| reversing the bytes.
+     */
+    static void WriteLong(int64_t value, android::base::borrowed_fd output);
+    /**
+     * Writes string to the |output|.
+     */
+    static void WriteString(const std::string& value, android::base::borrowed_fd output);
+    /**
+     * Copy |amount| of data from |input| to |output|.
+     */
+    static void Pipe(android::base::borrowed_fd input, android::base::borrowed_fd output,
+                     size_t amount);
+};
diff --git a/adb/fastdeploy/deploypatchgenerator/patch_utils_test.cpp b/adb/fastdeploy/deploypatchgenerator/patch_utils_test.cpp
new file mode 100644
index 0000000..3ec5ab3
--- /dev/null
+++ b/adb/fastdeploy/deploypatchgenerator/patch_utils_test.cpp
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "patch_utils.h"
+
+#include <android-base/file.h>
+#include <gtest/gtest.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sstream>
+#include <string>
+
+#include <google/protobuf/util/message_differencer.h>
+
+#include "adb_io.h"
+#include "sysdeps.h"
+
+using namespace com::android::fastdeploy;
+using google::protobuf::util::MessageDifferencer;
+
+static std::string GetTestFile(const std::string& name) {
+    return "fastdeploy/testdata/" + name;
+}
+
+bool FileMatchesContent(android::base::borrowed_fd input, const char* contents,
+                        ssize_t contentsSize) {
+    adb_lseek(input, 0, SEEK_SET);
+    // Use a temp buffer larger than any test contents.
+    constexpr int BUFFER_SIZE = 2048;
+    char buffer[BUFFER_SIZE];
+    bool result = true;
+    // Validate size of files is equal.
+    ssize_t readAmount = adb_read(input, buffer, BUFFER_SIZE);
+    EXPECT_EQ(readAmount, contentsSize);
+    result = memcmp(buffer, contents, readAmount) == 0;
+    for (int i = 0; i < readAmount; i++) {
+        printf("%x", buffer[i]);
+    }
+    printf(" == ");
+    for (int i = 0; i < contentsSize; i++) {
+        printf("%x", contents[i]);
+    }
+    printf("\n");
+
+    return result;
+}
+
+TEST(PatchUtilsTest, SwapLongWrites) {
+    TemporaryFile output;
+    PatchUtils::WriteLong(0x0011223344556677, output.fd);
+    adb_lseek(output.fd, 0, SEEK_SET);
+    const char expected[] = {0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00};
+    EXPECT_TRUE(FileMatchesContent(output.fd, expected, 8));
+}
+
+TEST(PatchUtilsTest, PipeWritesAmountToOutput) {
+    std::string expected("Some Data");
+    TemporaryFile input;
+    TemporaryFile output;
+    // Populate input file.
+    WriteFdExactly(input.fd, expected);
+    adb_lseek(input.fd, 0, SEEK_SET);
+    // Open input file for read, and output file for write.
+    PatchUtils::Pipe(input.fd, output.fd, expected.size());
+    // Validate pipe worked
+    EXPECT_TRUE(FileMatchesContent(output.fd, expected.c_str(), expected.size()));
+}
+
+TEST(PatchUtilsTest, SignatureConstMatches) {
+    std::string apkFile = GetTestFile("rotating_cube-release.apk");
+    TemporaryFile output;
+    PatchUtils::WriteSignature(output.fd);
+    std::string contents("FASTDEPLOY");
+    EXPECT_TRUE(FileMatchesContent(output.fd, contents.c_str(), contents.size()));
+}
+
+TEST(PatchUtilsTest, GatherMetadata) {
+    std::string apkFile = GetTestFile("rotating_cube-release.apk");
+    APKMetaData actual = PatchUtils::GetHostAPKMetaData(apkFile.c_str());
+
+    std::string expectedMetadata;
+    android::base::ReadFileToString(GetTestFile("rotating_cube-metadata-release.data"),
+                                    &expectedMetadata);
+    APKMetaData expected;
+    EXPECT_TRUE(expected.ParseFromString(expectedMetadata));
+
+    // Test paths might vary.
+    expected.set_absolute_path(actual.absolute_path());
+
+    std::string actualMetadata;
+    actual.SerializeToString(&actualMetadata);
+
+    expected.SerializeToString(&expectedMetadata);
+
+    EXPECT_EQ(expectedMetadata, actualMetadata);
+}
+
+static inline void sanitize(APKMetaData& metadata) {
+    metadata.clear_absolute_path();
+    for (auto&& entry : *metadata.mutable_entries()) {
+        entry.clear_datasize();
+    }
+}
+
+TEST(PatchUtilsTest, GatherDumpMetadata) {
+    APKMetaData hostMetadata;
+    APKMetaData deviceMetadata;
+
+    hostMetadata = PatchUtils::GetHostAPKMetaData(GetTestFile("sample.apk").c_str());
+
+    {
+        std::string cd;
+        android::base::ReadFileToString(GetTestFile("sample.cd"), &cd);
+
+        APKDump dump;
+        dump.set_cd(std::move(cd));
+
+        deviceMetadata = PatchUtils::GetDeviceAPKMetaData(dump);
+    }
+
+    sanitize(hostMetadata);
+    sanitize(deviceMetadata);
+
+    std::string expectedMetadata;
+    hostMetadata.SerializeToString(&expectedMetadata);
+
+    std::string actualMetadata;
+    deviceMetadata.SerializeToString(&actualMetadata);
+
+    EXPECT_EQ(expectedMetadata, actualMetadata);
+}
diff --git a/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java b/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java
deleted file mode 100644
index 24b2eab..0000000
--- a/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.fastdeploy;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.lang.StringBuilder;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.ArrayList;
-
-import java.nio.charset.StandardCharsets;
-import static java.nio.charset.StandardCharsets.UTF_8;
-
-import java.util.Comparator;
-import java.util.Iterator;
-import java.util.List;
-import java.util.AbstractMap.SimpleEntry;
-
-import com.android.fastdeploy.APKMetaData;
-import com.android.fastdeploy.APKEntry;
-
-public final class DeployPatchGenerator {
-    private static final int BUFFER_SIZE = 128 * 1024;
-
-    public static void main(String[] args) {
-        try {
-            if (args.length < 2) {
-                showUsage(0);
-            }
-
-            boolean verbose = false;
-            if (args.length > 2) {
-                String verboseFlag = args[2];
-                if (verboseFlag.compareTo("--verbose") == 0) {
-                    verbose = true;
-                }
-            }
-
-            StringBuilder sb = null;
-            String apkPath = args[0];
-            String deviceMetadataPath = args[1];
-            File hostFile = new File(apkPath);
-
-            List<APKEntry> deviceZipEntries = getMetadataFromFile(deviceMetadataPath);
-            System.err.println("Device Entries (" + deviceZipEntries.size() + ")");
-            if (verbose) {
-                sb = new StringBuilder();
-                for (APKEntry entry : deviceZipEntries) {
-                    APKEntryToString(entry, sb);
-                }
-                System.err.println(sb.toString());
-            }
-
-            List<APKEntry> hostFileEntries = PatchUtils.getAPKMetaData(hostFile).getEntriesList();
-            System.err.println("Host Entries (" + hostFileEntries.size() + ")");
-            if (verbose) {
-                sb = new StringBuilder();
-                for (APKEntry entry : hostFileEntries) {
-                    APKEntryToString(entry, sb);
-                }
-                System.err.println(sb.toString());
-            }
-
-            List<SimpleEntry<APKEntry, APKEntry>> identicalContentsEntrySet =
-                getIdenticalContents(deviceZipEntries, hostFileEntries);
-            reportIdenticalContents(identicalContentsEntrySet, hostFile);
-
-            if (verbose) {
-                sb = new StringBuilder();
-                for (SimpleEntry<APKEntry, APKEntry> identicalEntry : identicalContentsEntrySet) {
-                    APKEntry entry = identicalEntry.getValue();
-                    APKEntryToString(entry, sb);
-                }
-                System.err.println("Identical Entries (" + identicalContentsEntrySet.size() + ")");
-                System.err.println(sb.toString());
-            }
-
-            createPatch(identicalContentsEntrySet, hostFile, System.out);
-        } catch (Exception e) {
-            System.err.println("Error: " + e);
-            e.printStackTrace();
-            System.exit(2);
-        }
-        System.exit(0);
-    }
-
-    private static void showUsage(int exitCode) {
-        System.err.println("usage: deploypatchgenerator <apkpath> <deviceapkmetadata> [--verbose]");
-        System.err.println("");
-        System.exit(exitCode);
-    }
-
-    private static void APKEntryToString(APKEntry entry, StringBuilder outputString) {
-        outputString.append(String.format("Filename: %s\n", entry.getFileName()));
-        outputString.append(String.format("CRC32: 0x%08X\n", entry.getCrc32()));
-        outputString.append(String.format("Data Offset: %d\n", entry.getDataOffset()));
-        outputString.append(String.format("Compressed Size: %d\n", entry.getCompressedSize()));
-        outputString.append(String.format("Uncompressed Size: %d\n", entry.getUncompressedSize()));
-    }
-
-    private static List<APKEntry> getMetadataFromFile(String deviceMetadataPath) throws IOException {
-        InputStream is = new FileInputStream(new File(deviceMetadataPath));
-        APKMetaData apkMetaData = APKMetaData.parseDelimitedFrom(is);
-        return apkMetaData.getEntriesList();
-    }
-
-    private static List<SimpleEntry<APKEntry, APKEntry>> getIdenticalContents(
-        List<APKEntry> deviceZipEntries, List<APKEntry> hostZipEntries) throws IOException {
-        List<SimpleEntry<APKEntry, APKEntry>> identicalContents =
-            new ArrayList<SimpleEntry<APKEntry, APKEntry>>();
-
-        for (APKEntry deviceZipEntry : deviceZipEntries) {
-            for (APKEntry hostZipEntry : hostZipEntries) {
-                if (deviceZipEntry.getCrc32() == hostZipEntry.getCrc32() &&
-                    deviceZipEntry.getFileName().equals(hostZipEntry.getFileName())) {
-                    identicalContents.add(new SimpleEntry(deviceZipEntry, hostZipEntry));
-                }
-            }
-        }
-
-        Collections.sort(identicalContents, new Comparator<SimpleEntry<APKEntry, APKEntry>>() {
-            @Override
-            public int compare(
-                SimpleEntry<APKEntry, APKEntry> p1, SimpleEntry<APKEntry, APKEntry> p2) {
-                return Long.compare(p1.getValue().getDataOffset(), p2.getValue().getDataOffset());
-            }
-        });
-
-        return identicalContents;
-    }
-
-    private static void reportIdenticalContents(
-        List<SimpleEntry<APKEntry, APKEntry>> identicalContentsEntrySet, File hostFile)
-        throws IOException {
-        long totalEqualBytes = 0;
-        int totalEqualFiles = 0;
-        for (SimpleEntry<APKEntry, APKEntry> entries : identicalContentsEntrySet) {
-            APKEntry hostAPKEntry = entries.getValue();
-            totalEqualBytes += hostAPKEntry.getCompressedSize();
-            totalEqualFiles++;
-        }
-
-        float savingPercent = (float) (totalEqualBytes * 100) / hostFile.length();
-
-        System.err.println("Detected " + totalEqualFiles + " equal APK entries");
-        System.err.println(totalEqualBytes + " bytes are equal out of " + hostFile.length() + " ("
-            + savingPercent + "%)");
-    }
-
-    static void createPatch(List<SimpleEntry<APKEntry, APKEntry>> zipEntrySimpleEntrys,
-        File hostFile, OutputStream patchStream) throws IOException, PatchFormatException {
-        FileInputStream hostFileInputStream = new FileInputStream(hostFile);
-
-        patchStream.write(PatchUtils.SIGNATURE.getBytes(StandardCharsets.US_ASCII));
-        PatchUtils.writeFormattedLong(hostFile.length(), patchStream);
-
-        byte[] buffer = new byte[BUFFER_SIZE];
-        long totalBytesWritten = 0;
-        Iterator<SimpleEntry<APKEntry, APKEntry>> entrySimpleEntryIterator =
-            zipEntrySimpleEntrys.iterator();
-        while (entrySimpleEntryIterator.hasNext()) {
-            SimpleEntry<APKEntry, APKEntry> entrySimpleEntry = entrySimpleEntryIterator.next();
-            APKEntry deviceAPKEntry = entrySimpleEntry.getKey();
-            APKEntry hostAPKEntry = entrySimpleEntry.getValue();
-
-            long newDataLen = hostAPKEntry.getDataOffset() - totalBytesWritten;
-            long oldDataOffset = deviceAPKEntry.getDataOffset();
-            long oldDataLen = deviceAPKEntry.getCompressedSize();
-
-            PatchUtils.writeFormattedLong(newDataLen, patchStream);
-            PatchUtils.pipe(hostFileInputStream, patchStream, buffer, newDataLen);
-            PatchUtils.writeFormattedLong(oldDataOffset, patchStream);
-            PatchUtils.writeFormattedLong(oldDataLen, patchStream);
-
-            long skip = hostFileInputStream.skip(oldDataLen);
-            if (skip != oldDataLen) {
-                throw new PatchFormatException("skip error: attempted to skip " + oldDataLen
-                    + " bytes but return code was " + skip);
-            }
-            totalBytesWritten += oldDataLen + newDataLen;
-        }
-        long remainderLen = hostFile.length() - totalBytesWritten;
-        PatchUtils.writeFormattedLong(remainderLen, patchStream);
-        PatchUtils.pipe(hostFileInputStream, patchStream, buffer, remainderLen);
-        PatchUtils.writeFormattedLong(0, patchStream);
-        PatchUtils.writeFormattedLong(0, patchStream);
-        patchStream.flush();
-    }
-}
diff --git a/adb/fastdeploy/proto/ApkEntry.proto b/adb/fastdeploy/proto/ApkEntry.proto
index 9460d15..d84c5a5 100644
--- a/adb/fastdeploy/proto/ApkEntry.proto
+++ b/adb/fastdeploy/proto/ApkEntry.proto
@@ -1,18 +1,26 @@
-syntax = "proto2";
+syntax = "proto3";
 
 package com.android.fastdeploy;
 
 option java_package = "com.android.fastdeploy";
+option java_outer_classname = "ApkEntryProto";
 option java_multiple_files = true;
+option optimize_for = LITE_RUNTIME;
+
+message APKDump {
+    string name = 1;
+    bytes cd = 2;
+    bytes signature = 3;
+    string absolute_path = 4;
+}
 
 message APKEntry {
-    required int64 crc32 = 1;
-    required string fileName = 2;
-    required int64 dataOffset = 3;
-    required int64 compressedSize = 4;
-    required int64 uncompressedSize = 5;
+    bytes md5 = 1;
+    int64 dataOffset = 2;
+    int64 dataSize = 3;
 }
 
 message APKMetaData {
-    repeated APKEntry entries = 1;
+    string absolute_path = 1;
+    repeated APKEntry entries = 2;
 }
diff --git a/adb/fastdeploy/testdata/helloworld5.apk b/adb/fastdeploy/testdata/helloworld5.apk
new file mode 100644
index 0000000..4a1539e
--- /dev/null
+++ b/adb/fastdeploy/testdata/helloworld5.apk
Binary files differ
diff --git a/adb/fastdeploy/testdata/helloworld7.apk b/adb/fastdeploy/testdata/helloworld7.apk
new file mode 100644
index 0000000..82c46df
--- /dev/null
+++ b/adb/fastdeploy/testdata/helloworld7.apk
Binary files differ
diff --git a/adb/fastdeploy/testdata/rotating_cube-metadata-release.data b/adb/fastdeploy/testdata/rotating_cube-metadata-release.data
new file mode 100644
index 0000000..52352ff
--- /dev/null
+++ b/adb/fastdeploy/testdata/rotating_cube-metadata-release.data
Binary files differ
diff --git a/adb/fastdeploy/testdata/rotating_cube-release.apk b/adb/fastdeploy/testdata/rotating_cube-release.apk
new file mode 100644
index 0000000..d47e0ea
--- /dev/null
+++ b/adb/fastdeploy/testdata/rotating_cube-release.apk
Binary files differ
diff --git a/adb/fastdeploy/testdata/sample.apk b/adb/fastdeploy/testdata/sample.apk
new file mode 100644
index 0000000..c316205
--- /dev/null
+++ b/adb/fastdeploy/testdata/sample.apk
Binary files differ
diff --git a/adb/fastdeploy/testdata/sample.cd b/adb/fastdeploy/testdata/sample.cd
new file mode 100644
index 0000000..5e5b4d4
--- /dev/null
+++ b/adb/fastdeploy/testdata/sample.cd
Binary files differ
diff --git a/adb/fdevent.cpp b/adb/fdevent.cpp
deleted file mode 100644
index 32f9086..0000000
--- a/adb/fdevent.cpp
+++ /dev/null
@@ -1,553 +0,0 @@
-/* http://frotznet.googlecode.com/svn/trunk/utils/fdevent.c
-**
-** Copyright 2006, Brian Swetland <swetland@frotz.net>
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define TRACE_TAG FDEVENT
-
-#include "sysdeps.h"
-#include "fdevent.h"
-
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <atomic>
-#include <deque>
-#include <functional>
-#include <list>
-#include <mutex>
-#include <optional>
-#include <unordered_map>
-#include <utility>
-#include <variant>
-#include <vector>
-
-#include <android-base/chrono_utils.h>
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/thread_annotations.h>
-#include <android-base/threads.h>
-
-#include "adb_io.h"
-#include "adb_trace.h"
-#include "adb_unique_fd.h"
-#include "adb_utils.h"
-#include "sysdeps/chrono.h"
-
-#define FDE_EVENTMASK  0x00ff
-#define FDE_STATEMASK  0xff00
-
-#define FDE_ACTIVE     0x0100
-#define FDE_PENDING    0x0200
-#define FDE_CREATED    0x0400
-
-struct PollNode {
-  fdevent* fde;
-  adb_pollfd pollfd;
-
-  explicit PollNode(fdevent* fde) : fde(fde) {
-      memset(&pollfd, 0, sizeof(pollfd));
-      pollfd.fd = fde->fd.get();
-
-#if defined(__linux__)
-      // Always enable POLLRDHUP, so the host server can take action when some clients disconnect.
-      // Then we can avoid leaving many sockets in CLOSE_WAIT state. See http://b/23314034.
-      pollfd.events = POLLRDHUP;
-#endif
-  }
-};
-
-// All operations to fdevent should happen only in the main thread.
-// That's why we don't need a lock for fdevent.
-static auto& g_poll_node_map = *new std::unordered_map<int, PollNode>();
-static auto& g_pending_list = *new std::list<fdevent*>();
-static std::atomic<bool> terminate_loop(false);
-static bool main_thread_valid;
-static uint64_t main_thread_id;
-
-static uint64_t fdevent_id;
-
-static bool run_needs_flush = false;
-static auto& run_queue_notify_fd = *new unique_fd();
-static auto& run_queue_mutex = *new std::mutex();
-static auto& run_queue GUARDED_BY(run_queue_mutex) = *new std::deque<std::function<void()>>();
-
-void check_main_thread() {
-    if (main_thread_valid) {
-        CHECK_EQ(main_thread_id, android::base::GetThreadId());
-    }
-}
-
-void set_main_thread() {
-    main_thread_valid = true;
-    main_thread_id = android::base::GetThreadId();
-}
-
-static std::string dump_fde(const fdevent* fde) {
-    std::string state;
-    if (fde->state & FDE_ACTIVE) {
-        state += "A";
-    }
-    if (fde->state & FDE_PENDING) {
-        state += "P";
-    }
-    if (fde->state & FDE_CREATED) {
-        state += "C";
-    }
-    if (fde->state & FDE_READ) {
-        state += "R";
-    }
-    if (fde->state & FDE_WRITE) {
-        state += "W";
-    }
-    if (fde->state & FDE_ERROR) {
-        state += "E";
-    }
-    return android::base::StringPrintf("(fdevent %" PRIu64 ": fd %d %s)", fde->id, fde->fd.get(),
-                                       state.c_str());
-}
-
-template <typename F>
-static fdevent* fdevent_create_impl(int fd, F func, void* arg) {
-    check_main_thread();
-    CHECK_GE(fd, 0);
-
-    fdevent* fde = new fdevent();
-    fde->id = fdevent_id++;
-    fde->state = FDE_ACTIVE;
-    fde->fd.reset(fd);
-    fde->func = func;
-    fde->arg = arg;
-    if (!set_file_block_mode(fd, false)) {
-        // Here is not proper to handle the error. If it fails here, some error is
-        // likely to be detected by poll(), then we can let the callback function
-        // to handle it.
-        LOG(ERROR) << "failed to set non-blocking mode for fd " << fd;
-    }
-    auto pair = g_poll_node_map.emplace(fde->fd.get(), PollNode(fde));
-    CHECK(pair.second) << "install existing fd " << fd;
-
-    fde->state |= FDE_CREATED;
-    return fde;
-}
-
-fdevent* fdevent_create(int fd, fd_func func, void* arg) {
-    return fdevent_create_impl(fd, func, arg);
-}
-
-fdevent* fdevent_create(int fd, fd_func2 func, void* arg) {
-    return fdevent_create_impl(fd, func, arg);
-}
-
-unique_fd fdevent_release(fdevent* fde) {
-    check_main_thread();
-    if (!fde) {
-        return {};
-    }
-
-    if (!(fde->state & FDE_CREATED)) {
-        LOG(FATAL) << "destroying fde not created by fdevent_create(): " << dump_fde(fde);
-    }
-
-    unique_fd result = std::move(fde->fd);
-    if (fde->state & FDE_ACTIVE) {
-        g_poll_node_map.erase(result.get());
-
-        if (fde->state & FDE_PENDING) {
-            g_pending_list.remove(fde);
-        }
-        fde->state = 0;
-        fde->events = 0;
-    }
-
-    delete fde;
-    return result;
-}
-
-void fdevent_destroy(fdevent* fde) {
-    // Release, and then let unique_fd's destructor cleanup.
-    fdevent_release(fde);
-}
-
-static void fdevent_update(fdevent* fde, unsigned events) {
-    auto it = g_poll_node_map.find(fde->fd.get());
-    CHECK(it != g_poll_node_map.end());
-    PollNode& node = it->second;
-    if (events & FDE_READ) {
-        node.pollfd.events |= POLLIN;
-    } else {
-        node.pollfd.events &= ~POLLIN;
-    }
-
-    if (events & FDE_WRITE) {
-        node.pollfd.events |= POLLOUT;
-    } else {
-        node.pollfd.events &= ~POLLOUT;
-    }
-    fde->state = (fde->state & FDE_STATEMASK) | events;
-}
-
-void fdevent_set(fdevent* fde, unsigned events) {
-    check_main_thread();
-    events &= FDE_EVENTMASK;
-    if ((fde->state & FDE_EVENTMASK) == events) {
-        return;
-    }
-    CHECK(fde->state & FDE_ACTIVE);
-    fdevent_update(fde, events);
-    D("fdevent_set: %s, events = %u", dump_fde(fde).c_str(), events);
-
-    if (fde->state & FDE_PENDING) {
-        // If we are pending, make sure we don't signal an event that is no longer wanted.
-        fde->events &= events;
-        if (fde->events == 0) {
-            g_pending_list.remove(fde);
-            fde->state &= ~FDE_PENDING;
-        }
-    }
-}
-
-void fdevent_add(fdevent* fde, unsigned events) {
-    check_main_thread();
-    CHECK(!(events & FDE_TIMEOUT));
-    fdevent_set(fde, (fde->state & FDE_EVENTMASK) | events);
-}
-
-void fdevent_del(fdevent* fde, unsigned events) {
-    check_main_thread();
-    CHECK(!(events & FDE_TIMEOUT));
-    fdevent_set(fde, (fde->state & FDE_EVENTMASK) & ~events);
-}
-
-void fdevent_set_timeout(fdevent* fde, std::optional<std::chrono::milliseconds> timeout) {
-    check_main_thread();
-    fde->timeout = timeout;
-    fde->last_active = std::chrono::steady_clock::now();
-}
-
-static std::string dump_pollfds(const std::vector<adb_pollfd>& pollfds) {
-    std::string result;
-    for (const auto& pollfd : pollfds) {
-        std::string op;
-        if (pollfd.events & POLLIN) {
-            op += "R";
-        }
-        if (pollfd.events & POLLOUT) {
-            op += "W";
-        }
-        android::base::StringAppendF(&result, " %d(%s)", pollfd.fd, op.c_str());
-    }
-    return result;
-}
-
-static std::optional<std::chrono::milliseconds> calculate_timeout() {
-    std::optional<std::chrono::milliseconds> result = std::nullopt;
-    auto now = std::chrono::steady_clock::now();
-    check_main_thread();
-
-    for (const auto& [fd, pollnode] : g_poll_node_map) {
-        UNUSED(fd);
-        auto timeout_opt = pollnode.fde->timeout;
-        if (timeout_opt) {
-            auto deadline = pollnode.fde->last_active + *timeout_opt;
-            auto time_left = std::chrono::duration_cast<std::chrono::milliseconds>(deadline - now);
-            if (time_left < std::chrono::milliseconds::zero()) {
-                time_left = std::chrono::milliseconds::zero();
-            }
-
-            if (!result) {
-                result = time_left;
-            } else {
-                result = std::min(*result, time_left);
-            }
-        }
-    }
-
-    return result;
-}
-
-static void fdevent_process() {
-    std::vector<adb_pollfd> pollfds;
-    for (const auto& pair : g_poll_node_map) {
-        pollfds.push_back(pair.second.pollfd);
-    }
-    CHECK_GT(pollfds.size(), 0u);
-    D("poll(), pollfds = %s", dump_pollfds(pollfds).c_str());
-
-    auto timeout = calculate_timeout();
-    int timeout_ms;
-    if (!timeout) {
-        timeout_ms = -1;
-    } else {
-        timeout_ms = timeout->count();
-    }
-
-    int ret = adb_poll(&pollfds[0], pollfds.size(), timeout_ms);
-    if (ret == -1) {
-        PLOG(ERROR) << "poll(), ret = " << ret;
-        return;
-    }
-
-    auto post_poll = std::chrono::steady_clock::now();
-
-    for (const auto& pollfd : pollfds) {
-        if (pollfd.revents != 0) {
-            D("for fd %d, revents = %x", pollfd.fd, pollfd.revents);
-        }
-        unsigned events = 0;
-        if (pollfd.revents & POLLIN) {
-            events |= FDE_READ;
-        }
-        if (pollfd.revents & POLLOUT) {
-            events |= FDE_WRITE;
-        }
-        if (pollfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
-            // We fake a read, as the rest of the code assumes that errors will
-            // be detected at that point.
-            events |= FDE_READ | FDE_ERROR;
-        }
-#if defined(__linux__)
-        if (pollfd.revents & POLLRDHUP) {
-            events |= FDE_READ | FDE_ERROR;
-        }
-#endif
-        auto it = g_poll_node_map.find(pollfd.fd);
-        CHECK(it != g_poll_node_map.end());
-        fdevent* fde = it->second.fde;
-
-        if (events == 0) {
-            // Check for timeout.
-            if (fde->timeout) {
-                auto deadline = fde->last_active + *fde->timeout;
-                if (deadline < post_poll) {
-                    events |= FDE_TIMEOUT;
-                }
-            }
-        }
-
-        if (events != 0) {
-            CHECK_EQ(fde->fd.get(), pollfd.fd);
-            fde->events |= events;
-            fde->last_active = post_poll;
-            D("%s got events %x", dump_fde(fde).c_str(), events);
-            fde->state |= FDE_PENDING;
-            g_pending_list.push_back(fde);
-        }
-    }
-}
-
-template <class T>
-struct always_false : std::false_type {};
-
-static void fdevent_call_fdfunc(fdevent* fde) {
-    unsigned events = fde->events;
-    fde->events = 0;
-    CHECK(fde->state & FDE_PENDING);
-    fde->state &= (~FDE_PENDING);
-    D("fdevent_call_fdfunc %s", dump_fde(fde).c_str());
-    std::visit(
-            [&](auto&& f) {
-                using F = std::decay_t<decltype(f)>;
-                if constexpr (std::is_same_v<fd_func, F>) {
-                    f(fde->fd.get(), events, fde->arg);
-                } else if constexpr (std::is_same_v<fd_func2, F>) {
-                    f(fde, events, fde->arg);
-                } else {
-                    static_assert(always_false<F>::value, "non-exhaustive visitor");
-                }
-            },
-            fde->func);
-}
-
-static void fdevent_run_flush() EXCLUDES(run_queue_mutex) {
-    // We need to be careful around reentrancy here, since a function we call can queue up another
-    // function.
-    while (true) {
-        std::function<void()> fn;
-        {
-            std::lock_guard<std::mutex> lock(run_queue_mutex);
-            if (run_queue.empty()) {
-                break;
-            }
-            fn = run_queue.front();
-            run_queue.pop_front();
-        }
-        fn();
-    }
-}
-
-static void fdevent_run_func(int fd, unsigned ev, void* /* userdata */) {
-    CHECK_GE(fd, 0);
-    CHECK(ev & FDE_READ);
-
-    char buf[1024];
-
-    // Empty the fd.
-    if (adb_read(fd, buf, sizeof(buf)) == -1) {
-        PLOG(FATAL) << "failed to empty run queue notify fd";
-    }
-
-    // Mark that we need to flush, and then run it at the end of fdevent_loop.
-    run_needs_flush = true;
-}
-
-static void fdevent_run_setup() {
-    {
-        std::lock_guard<std::mutex> lock(run_queue_mutex);
-        CHECK(run_queue_notify_fd.get() == -1);
-        int s[2];
-        if (adb_socketpair(s) != 0) {
-            PLOG(FATAL) << "failed to create run queue notify socketpair";
-        }
-
-        if (!set_file_block_mode(s[0], false) || !set_file_block_mode(s[1], false)) {
-            PLOG(FATAL) << "failed to make run queue notify socket nonblocking";
-        }
-
-        run_queue_notify_fd.reset(s[0]);
-        fdevent* fde = fdevent_create(s[1], fdevent_run_func, nullptr);
-        CHECK(fde != nullptr);
-        fdevent_add(fde, FDE_READ);
-    }
-
-    fdevent_run_flush();
-}
-
-void fdevent_run_on_main_thread(std::function<void()> fn) {
-    std::lock_guard<std::mutex> lock(run_queue_mutex);
-    run_queue.push_back(std::move(fn));
-
-    // run_queue_notify_fd could still be -1 if we're called before fdevent has finished setting up.
-    // In that case, rely on the setup code to flush the queue without a notification being needed.
-    if (run_queue_notify_fd != -1) {
-        int rc = adb_write(run_queue_notify_fd.get(), "", 1);
-
-        // It's possible that we get EAGAIN here, if lots of notifications came in while handling.
-        if (rc == 0) {
-            PLOG(FATAL) << "run queue notify fd was closed?";
-        } else if (rc == -1 && errno != EAGAIN) {
-            PLOG(FATAL) << "failed to write to run queue notify fd";
-        }
-    }
-}
-
-static void fdevent_check_spin(uint64_t cycle) {
-    // Check to see if we're spinning because we forgot about an fdevent
-    // by keeping track of how long fdevents have been continuously pending.
-    struct SpinCheck {
-        fdevent* fde;
-        android::base::boot_clock::time_point timestamp;
-        uint64_t cycle;
-    };
-    static auto& g_continuously_pending = *new std::unordered_map<uint64_t, SpinCheck>();
-    static auto last_cycle = android::base::boot_clock::now();
-
-    auto now = android::base::boot_clock::now();
-    if (now - last_cycle > 10ms) {
-        // We're not spinning.
-        g_continuously_pending.clear();
-        last_cycle = now;
-        return;
-    }
-    last_cycle = now;
-
-    for (auto* fde : g_pending_list) {
-        auto it = g_continuously_pending.find(fde->id);
-        if (it == g_continuously_pending.end()) {
-            g_continuously_pending[fde->id] =
-                    SpinCheck{.fde = fde, .timestamp = now, .cycle = cycle};
-        } else {
-            it->second.cycle = cycle;
-        }
-    }
-
-    for (auto it = g_continuously_pending.begin(); it != g_continuously_pending.end();) {
-        if (it->second.cycle != cycle) {
-            it = g_continuously_pending.erase(it);
-        } else {
-            // Use an absurdly long window, since all we really care about is
-            // getting a bugreport eventually.
-            if (now - it->second.timestamp > 300s) {
-                LOG(FATAL_WITHOUT_ABORT)
-                        << "detected spin in fdevent: " << dump_fde(it->second.fde);
-#if defined(__linux__)
-                int fd = it->second.fde->fd.get();
-                std::string fd_path = android::base::StringPrintf("/proc/self/fd/%d", fd);
-                std::string path;
-                if (!android::base::Readlink(fd_path, &path)) {
-                    PLOG(FATAL_WITHOUT_ABORT) << "readlink of fd " << fd << " failed";
-                }
-                LOG(FATAL_WITHOUT_ABORT) << "fd " << fd << " = " << path;
-#endif
-                abort();
-            }
-            ++it;
-        }
-    }
-}
-
-void fdevent_loop() {
-    set_main_thread();
-    fdevent_run_setup();
-
-    uint64_t cycle = 0;
-    while (true) {
-        if (terminate_loop) {
-            return;
-        }
-
-        D("--- --- waiting for events");
-
-        fdevent_process();
-
-        fdevent_check_spin(cycle++);
-
-        while (!g_pending_list.empty()) {
-            fdevent* fde = g_pending_list.front();
-            g_pending_list.pop_front();
-            fdevent_call_fdfunc(fde);
-        }
-
-        if (run_needs_flush) {
-            fdevent_run_flush();
-            run_needs_flush = false;
-        }
-    }
-}
-
-void fdevent_terminate_loop() {
-    terminate_loop = true;
-}
-
-size_t fdevent_installed_count() {
-    return g_poll_node_map.size();
-}
-
-void fdevent_reset() {
-    g_poll_node_map.clear();
-    g_pending_list.clear();
-
-    std::lock_guard<std::mutex> lock(run_queue_mutex);
-    run_queue_notify_fd.reset();
-    run_queue.clear();
-
-    main_thread_valid = false;
-    terminate_loop = false;
-}
diff --git a/adb/fdevent.h b/adb/fdevent.h
deleted file mode 100644
index 42dbb9e..0000000
--- a/adb/fdevent.h
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright (C) 2006 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __FDEVENT_H
-#define __FDEVENT_H
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <chrono>
-#include <functional>
-#include <optional>
-#include <variant>
-
-#include "adb_unique_fd.h"
-
-// Events that may be observed
-#define FDE_READ 0x0001
-#define FDE_WRITE 0x0002
-#define FDE_ERROR 0x0004
-#define FDE_TIMEOUT 0x0008
-
-typedef void (*fd_func)(int fd, unsigned events, void *userdata);
-typedef void (*fd_func2)(struct fdevent* fde, unsigned events, void* userdata);
-
-struct fdevent {
-    uint64_t id;
-
-    unique_fd fd;
-    int force_eof = 0;
-
-    uint16_t state = 0;
-    uint16_t events = 0;
-    std::optional<std::chrono::milliseconds> timeout;
-    std::chrono::steady_clock::time_point last_active;
-
-    std::variant<fd_func, fd_func2> func;
-    void* arg = nullptr;
-};
-
-// Allocate and initialize a new fdevent object
-// TODO: Switch these to unique_fd.
-fdevent *fdevent_create(int fd, fd_func func, void *arg);
-fdevent* fdevent_create(int fd, fd_func2 func, void* arg);
-
-// Deallocate an fdevent object that was created by fdevent_create.
-void fdevent_destroy(fdevent *fde);
-
-// fdevent_destroy, except releasing the file descriptor previously owned by the fdevent.
-unique_fd fdevent_release(fdevent* fde);
-
-// Change which events should cause notifications
-void fdevent_set(fdevent *fde, unsigned events);
-void fdevent_add(fdevent *fde, unsigned events);
-void fdevent_del(fdevent *fde, unsigned events);
-
-// Set a timeout on an fdevent.
-// If no events are triggered by the timeout, an FDE_TIMEOUT will be generated.
-// Note timeouts are not defused automatically; if a timeout is set on an fdevent, it will
-// trigger repeatedly every |timeout| ms.
-void fdevent_set_timeout(fdevent* fde, std::optional<std::chrono::milliseconds> timeout);
-
-// Loop forever, handling events.
-void fdevent_loop();
-
-void check_main_thread();
-
-// Queue an operation to run on the main thread.
-void fdevent_run_on_main_thread(std::function<void()> fn);
-
-// The following functions are used only for tests.
-void fdevent_terminate_loop();
-size_t fdevent_installed_count();
-void fdevent_reset();
-void set_main_thread();
-
-#endif
diff --git a/adb/fdevent/fdevent.cpp b/adb/fdevent/fdevent.cpp
new file mode 100644
index 0000000..fd55020
--- /dev/null
+++ b/adb/fdevent/fdevent.cpp
@@ -0,0 +1,262 @@
+/*
+ * Copyright 2006, Brian Swetland <swetland@frotz.net>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define TRACE_TAG FDEVENT
+
+#include "sysdeps.h"
+
+#include <inttypes.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/threads.h>
+
+#include "adb_utils.h"
+#include "fdevent.h"
+#include "fdevent_epoll.h"
+#include "fdevent_poll.h"
+
+using namespace std::chrono_literals;
+using std::chrono::duration_cast;
+
+void invoke_fde(struct fdevent* fde, unsigned events) {
+    if (auto f = std::get_if<fd_func>(&fde->func)) {
+        (*f)(fde->fd.get(), events, fde->arg);
+    } else if (auto f = std::get_if<fd_func2>(&fde->func)) {
+        (*f)(fde, events, fde->arg);
+    } else {
+        __builtin_unreachable();
+    }
+}
+
+std::string dump_fde(const fdevent* fde) {
+    std::string state;
+    if (fde->state & FDE_READ) {
+        state += "R";
+    }
+    if (fde->state & FDE_WRITE) {
+        state += "W";
+    }
+    if (fde->state & FDE_ERROR) {
+        state += "E";
+    }
+    return android::base::StringPrintf("(fdevent %" PRIu64 ": fd %d %s)", fde->id, fde->fd.get(),
+                                       state.c_str());
+}
+
+fdevent* fdevent_context::Create(unique_fd fd, std::variant<fd_func, fd_func2> func, void* arg) {
+    CheckMainThread();
+    CHECK_GE(fd.get(), 0);
+
+    int fd_num = fd.get();
+
+    auto [it, inserted] = this->installed_fdevents_.emplace(fd_num, fdevent{});
+    CHECK(inserted);
+
+    fdevent* fde = &it->second;
+    fde->id = fdevent_id_++;
+    fde->state = 0;
+    fde->fd = std::move(fd);
+    fde->func = func;
+    fde->arg = arg;
+    if (!set_file_block_mode(fde->fd, false)) {
+        // Here is not proper to handle the error. If it fails here, some error is
+        // likely to be detected by poll(), then we can let the callback function
+        // to handle it.
+        LOG(ERROR) << "failed to set non-blocking mode for fd " << fde->fd.get();
+    }
+
+    this->Register(fde);
+    return fde;
+}
+
+unique_fd fdevent_context::Destroy(fdevent* fde) {
+    CheckMainThread();
+    if (!fde) {
+        return {};
+    }
+
+    this->Unregister(fde);
+
+    unique_fd fd = std::move(fde->fd);
+
+    auto erased = this->installed_fdevents_.erase(fd.get());
+    CHECK_EQ(1UL, erased);
+
+    return fd;
+}
+
+void fdevent_context::Add(fdevent* fde, unsigned events) {
+    CHECK(!(events & FDE_TIMEOUT));
+    Set(fde, fde->state | events);
+}
+
+void fdevent_context::Del(fdevent* fde, unsigned events) {
+    CHECK(!(events & FDE_TIMEOUT));
+    Set(fde, fde->state & ~events);
+}
+
+void fdevent_context::SetTimeout(fdevent* fde, std::optional<std::chrono::milliseconds> timeout) {
+    CheckMainThread();
+    fde->timeout = timeout;
+    fde->last_active = std::chrono::steady_clock::now();
+}
+
+std::optional<std::chrono::milliseconds> fdevent_context::CalculatePollDuration() {
+    std::optional<std::chrono::milliseconds> result = std::nullopt;
+    auto now = std::chrono::steady_clock::now();
+    CheckMainThread();
+
+    for (const auto& [fd, fde] : this->installed_fdevents_) {
+        UNUSED(fd);
+        auto timeout_opt = fde.timeout;
+        if (timeout_opt) {
+            auto deadline = fde.last_active + *timeout_opt;
+            auto time_left = duration_cast<std::chrono::milliseconds>(deadline - now);
+            if (time_left < 0ms) {
+                time_left = 0ms;
+            }
+
+            if (!result) {
+                result = time_left;
+            } else {
+                result = std::min(*result, time_left);
+            }
+        }
+    }
+
+    return result;
+}
+
+void fdevent_context::HandleEvents(const std::vector<fdevent_event>& events) {
+    for (const auto& event : events) {
+        invoke_fde(event.fde, event.events);
+    }
+    FlushRunQueue();
+}
+
+void fdevent_context::FlushRunQueue() {
+    // We need to be careful around reentrancy here, since a function we call can queue up another
+    // function.
+    while (true) {
+        std::function<void()> fn;
+        {
+            std::lock_guard<std::mutex> lock(this->run_queue_mutex_);
+            if (this->run_queue_.empty()) {
+                break;
+            }
+            fn = std::move(this->run_queue_.front());
+            this->run_queue_.pop_front();
+        }
+        fn();
+    }
+}
+
+void fdevent_context::CheckMainThread() {
+    if (main_thread_id_) {
+        CHECK_EQ(*main_thread_id_, android::base::GetThreadId());
+    }
+}
+
+void fdevent_context::Run(std::function<void()> fn) {
+    {
+        std::lock_guard<std::mutex> lock(run_queue_mutex_);
+        run_queue_.push_back(std::move(fn));
+    }
+
+    Interrupt();
+}
+
+void fdevent_context::TerminateLoop() {
+    terminate_loop_ = true;
+    Interrupt();
+}
+
+static std::unique_ptr<fdevent_context> fdevent_create_context() {
+#if defined(__linux__)
+    return std::make_unique<fdevent_context_epoll>();
+#else
+    return std::make_unique<fdevent_context_poll>();
+#endif
+}
+
+static auto& g_ambient_fdevent_context() {
+    static auto context = fdevent_create_context().release();
+    return context;
+}
+
+static fdevent_context* fdevent_get_ambient() {
+    return g_ambient_fdevent_context();
+}
+
+fdevent* fdevent_create(int fd, fd_func func, void* arg) {
+    unique_fd ufd(fd);
+    return fdevent_get_ambient()->Create(std::move(ufd), func, arg);
+}
+
+fdevent* fdevent_create(int fd, fd_func2 func, void* arg) {
+    unique_fd ufd(fd);
+    return fdevent_get_ambient()->Create(std::move(ufd), func, arg);
+}
+
+unique_fd fdevent_release(fdevent* fde) {
+    return fdevent_get_ambient()->Destroy(fde);
+}
+
+void fdevent_destroy(fdevent* fde) {
+    fdevent_get_ambient()->Destroy(fde);
+}
+
+void fdevent_set(fdevent* fde, unsigned events) {
+    fdevent_get_ambient()->Set(fde, events);
+}
+
+void fdevent_add(fdevent* fde, unsigned events) {
+    fdevent_get_ambient()->Add(fde, events);
+}
+
+void fdevent_del(fdevent* fde, unsigned events) {
+    fdevent_get_ambient()->Del(fde, events);
+}
+
+void fdevent_set_timeout(fdevent* fde, std::optional<std::chrono::milliseconds> timeout) {
+    fdevent_get_ambient()->SetTimeout(fde, timeout);
+}
+
+void fdevent_run_on_main_thread(std::function<void()> fn) {
+    fdevent_get_ambient()->Run(std::move(fn));
+}
+
+void fdevent_loop() {
+    fdevent_get_ambient()->Loop();
+}
+
+void check_main_thread() {
+    fdevent_get_ambient()->CheckMainThread();
+}
+
+void fdevent_terminate_loop() {
+    fdevent_get_ambient()->TerminateLoop();
+}
+
+size_t fdevent_installed_count() {
+    return fdevent_get_ambient()->InstalledCount();
+}
+
+void fdevent_reset() {
+    auto old = std::exchange(g_ambient_fdevent_context(), fdevent_create_context().release());
+    delete old;
+}
diff --git a/adb/fdevent/fdevent.h b/adb/fdevent/fdevent.h
new file mode 100644
index 0000000..9fc3b2c
--- /dev/null
+++ b/adb/fdevent/fdevent.h
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __FDEVENT_H
+#define __FDEVENT_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <atomic>
+#include <chrono>
+#include <deque>
+#include <functional>
+#include <mutex>
+#include <optional>
+#include <unordered_map>
+#include <variant>
+
+#include <android-base/thread_annotations.h>
+
+#include "adb_unique_fd.h"
+
+// Events that may be observed
+#define FDE_READ 0x0001
+#define FDE_WRITE 0x0002
+#define FDE_ERROR 0x0004
+#define FDE_TIMEOUT 0x0008
+
+struct fdevent;
+
+typedef void (*fd_func)(int fd, unsigned events, void *userdata);
+typedef void (*fd_func2)(struct fdevent* fde, unsigned events, void* userdata);
+
+void invoke_fde(struct fdevent* fde, unsigned events);
+std::string dump_fde(const fdevent* fde);
+
+struct fdevent_event {
+    fdevent* fde;
+    unsigned events;
+};
+
+struct fdevent final {
+    uint64_t id;
+
+    unique_fd fd;
+    int force_eof = 0;
+
+    uint16_t state = 0;
+    std::optional<std::chrono::milliseconds> timeout;
+    std::chrono::steady_clock::time_point last_active;
+
+    std::variant<fd_func, fd_func2> func;
+    void* arg = nullptr;
+};
+
+struct fdevent_context {
+  public:
+    virtual ~fdevent_context() = default;
+
+    // Allocate and initialize a new fdevent object.
+    fdevent* Create(unique_fd fd, std::variant<fd_func, fd_func2> func, void* arg);
+
+    // Deallocate an fdevent object, returning the file descriptor that was owned by it.
+    // Note that this calls Set, which is a virtual method, so destructors that call this must be
+    // final.
+    unique_fd Destroy(fdevent* fde);
+
+  protected:
+    virtual void Register(fdevent*) {}
+    virtual void Unregister(fdevent*) {}
+
+  public:
+    // Change which events should cause notifications.
+    virtual void Set(fdevent* fde, unsigned events) = 0;
+    void Add(fdevent* fde, unsigned events);
+    void Del(fdevent* fde, unsigned events);
+
+    // Set a timeout on an fdevent.
+    // If no events are triggered by the timeout, an FDE_TIMEOUT will be generated.
+    // Note timeouts are not defused automatically; if a timeout is set on an fdevent, it will
+    // trigger repeatedly every |timeout| ms.
+    void SetTimeout(fdevent* fde, std::optional<std::chrono::milliseconds> timeout);
+
+  protected:
+    std::optional<std::chrono::milliseconds> CalculatePollDuration();
+    void HandleEvents(const std::vector<fdevent_event>& events);
+
+  private:
+    // Run all pending functions enqueued via Run().
+    void FlushRunQueue() EXCLUDES(run_queue_mutex_);
+
+  public:
+    // Loop until TerminateLoop is called, handling events.
+    // Implementations should call FlushRunQueue on every iteration, and check the value of
+    // terminate_loop_ to determine whether to stop.
+    virtual void Loop() = 0;
+
+    // Assert that the caller is either running on the context's main thread, or that there is no
+    // active main thread.
+    void CheckMainThread();
+
+    // Queue an operation to be run on the main thread.
+    void Run(std::function<void()> fn);
+
+    // Test-only functionality:
+    void TerminateLoop();
+    virtual size_t InstalledCount() = 0;
+
+  protected:
+    // Interrupt the run loop.
+    virtual void Interrupt() = 0;
+
+    std::optional<uint64_t> main_thread_id_ = std::nullopt;
+    std::atomic<bool> terminate_loop_ = false;
+
+  protected:
+    std::unordered_map<int, fdevent> installed_fdevents_;
+
+  private:
+    uint64_t fdevent_id_ = 0;
+    std::mutex run_queue_mutex_;
+    std::deque<std::function<void()>> run_queue_ GUARDED_BY(run_queue_mutex_);
+};
+
+// Backwards compatibility shims that forward to the global fdevent_context.
+fdevent* fdevent_create(int fd, fd_func func, void* arg);
+fdevent* fdevent_create(int fd, fd_func2 func, void* arg);
+
+unique_fd fdevent_release(fdevent* fde);
+void fdevent_destroy(fdevent* fde);
+
+void fdevent_set(fdevent *fde, unsigned events);
+void fdevent_add(fdevent *fde, unsigned events);
+void fdevent_del(fdevent *fde, unsigned events);
+void fdevent_set_timeout(fdevent* fde, std::optional<std::chrono::milliseconds> timeout);
+void fdevent_loop();
+void check_main_thread();
+
+// Queue an operation to run on the main thread.
+void fdevent_run_on_main_thread(std::function<void()> fn);
+
+// The following functions are used only for tests.
+void fdevent_terminate_loop();
+size_t fdevent_installed_count();
+void fdevent_reset();
+
+#endif
diff --git a/adb/fdevent/fdevent_epoll.cpp b/adb/fdevent/fdevent_epoll.cpp
new file mode 100644
index 0000000..4ef41d1
--- /dev/null
+++ b/adb/fdevent/fdevent_epoll.cpp
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fdevent_epoll.h"
+
+#if defined(__linux__)
+
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+
+#include <android-base/logging.h>
+#include <android-base/threads.h>
+
+#include "adb_unique_fd.h"
+#include "fdevent.h"
+
+static void fdevent_interrupt(int fd, unsigned, void*) {
+    uint64_t buf;
+    ssize_t rc = TEMP_FAILURE_RETRY(adb_read(fd, &buf, sizeof(buf)));
+    if (rc == -1) {
+        PLOG(FATAL) << "failed to read from fdevent interrupt fd";
+    }
+}
+
+fdevent_context_epoll::fdevent_context_epoll() {
+    epoll_fd_.reset(epoll_create1(EPOLL_CLOEXEC));
+
+    unique_fd interrupt_fd(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK));
+    if (interrupt_fd == -1) {
+        PLOG(FATAL) << "failed to create fdevent interrupt eventfd";
+    }
+
+    unique_fd interrupt_fd_dup(fcntl(interrupt_fd.get(), F_DUPFD_CLOEXEC, 3));
+    if (interrupt_fd_dup == -1) {
+        PLOG(FATAL) << "failed to dup fdevent interrupt eventfd";
+    }
+
+    this->interrupt_fd_ = std::move(interrupt_fd_dup);
+    fdevent* fde = this->Create(std::move(interrupt_fd), fdevent_interrupt, nullptr);
+    CHECK(fde != nullptr);
+    this->Add(fde, FDE_READ);
+}
+
+fdevent_context_epoll::~fdevent_context_epoll() {
+    // Destroy calls virtual methods, but this class is final, so that's okay.
+    this->Destroy(this->interrupt_fde_);
+}
+
+static epoll_event calculate_epoll_event(fdevent* fde) {
+    epoll_event result;
+    result.events = 0;
+    if (fde->state & FDE_READ) {
+        result.events |= EPOLLIN;
+    }
+    if (fde->state & FDE_WRITE) {
+        result.events |= EPOLLOUT;
+    }
+    if (fde->state & FDE_ERROR) {
+        result.events |= EPOLLERR;
+    }
+    result.events |= EPOLLRDHUP;
+    result.data.ptr = fde;
+    return result;
+}
+
+void fdevent_context_epoll::Register(fdevent* fde) {
+    epoll_event ev = calculate_epoll_event(fde);
+    if (epoll_ctl(epoll_fd_.get(), EPOLL_CTL_ADD, fde->fd.get(), &ev) != 0) {
+        PLOG(FATAL) << "failed to register fd " << fde->fd.get() << " with epoll";
+    }
+}
+
+void fdevent_context_epoll::Unregister(fdevent* fde) {
+    if (epoll_ctl(epoll_fd_.get(), EPOLL_CTL_DEL, fde->fd.get(), nullptr) != 0) {
+        PLOG(FATAL) << "failed to unregister fd " << fde->fd.get() << " with epoll";
+    }
+}
+
+void fdevent_context_epoll::Set(fdevent* fde, unsigned events) {
+    unsigned previous_state = fde->state;
+    fde->state = events;
+
+    // If the state is the same, or only differed by FDE_TIMEOUT, we don't need to modify epoll.
+    if ((previous_state & ~FDE_TIMEOUT) == (events & ~FDE_TIMEOUT)) {
+        return;
+    }
+
+    epoll_event ev = calculate_epoll_event(fde);
+    if (epoll_ctl(epoll_fd_.get(), EPOLL_CTL_MOD, fde->fd.get(), &ev) != 0) {
+        PLOG(FATAL) << "failed to modify fd " << fde->fd.get() << " with epoll";
+    }
+}
+
+void fdevent_context_epoll::Loop() {
+    main_thread_id_ = android::base::GetThreadId();
+
+    std::vector<fdevent_event> fde_events;
+    std::vector<epoll_event> epoll_events;
+    epoll_events.resize(this->installed_fdevents_.size());
+
+    while (true) {
+        if (terminate_loop_) {
+            break;
+        }
+
+        int rc = -1;
+        while (rc == -1) {
+            std::optional<std::chrono::milliseconds> timeout = CalculatePollDuration();
+            int timeout_ms;
+            if (!timeout) {
+                timeout_ms = -1;
+            } else {
+                timeout_ms = timeout->count();
+            }
+
+            rc = epoll_wait(epoll_fd_.get(), epoll_events.data(), epoll_events.size(), timeout_ms);
+            if (rc == -1 && errno != EINTR) {
+                PLOG(FATAL) << "epoll_wait failed";
+            }
+        }
+
+        auto post_poll = std::chrono::steady_clock::now();
+        std::unordered_map<fdevent*, unsigned> event_map;
+        for (int i = 0; i < rc; ++i) {
+            fdevent* fde = static_cast<fdevent*>(epoll_events[i].data.ptr);
+
+            unsigned events = 0;
+            if (epoll_events[i].events & EPOLLIN) {
+                CHECK(fde->state & FDE_READ);
+                events |= FDE_READ;
+            }
+            if (epoll_events[i].events & EPOLLOUT) {
+                CHECK(fde->state & FDE_WRITE);
+                events |= FDE_WRITE;
+            }
+            if (epoll_events[i].events & (EPOLLERR | EPOLLHUP | EPOLLRDHUP)) {
+                // We fake a read, as the rest of the code assumes that errors will
+                // be detected at that point.
+                events |= FDE_READ | FDE_ERROR;
+            }
+
+            event_map[fde] = events;
+        }
+
+        for (auto& [fd, fde] : installed_fdevents_) {
+            unsigned events = 0;
+            if (auto it = event_map.find(&fde); it != event_map.end()) {
+                events = it->second;
+            }
+
+            if (events == 0) {
+                if (fde.timeout) {
+                    auto deadline = fde.last_active + *fde.timeout;
+                    if (deadline < post_poll) {
+                        events |= FDE_TIMEOUT;
+                    }
+                }
+            }
+
+            if (events != 0) {
+                LOG(DEBUG) << dump_fde(&fde) << " got events " << std::hex << std::showbase
+                           << events;
+                fde_events.push_back({&fde, events});
+                fde.last_active = post_poll;
+            }
+        }
+        this->HandleEvents(fde_events);
+        fde_events.clear();
+    }
+
+    main_thread_id_.reset();
+}
+
+size_t fdevent_context_epoll::InstalledCount() {
+    // We always have an installed fde for interrupt.
+    return this->installed_fdevents_.size() - 1;
+}
+
+void fdevent_context_epoll::Interrupt() {
+    uint64_t i = 1;
+    ssize_t rc = TEMP_FAILURE_RETRY(adb_write(this->interrupt_fd_, &i, sizeof(i)));
+    if (rc != sizeof(i)) {
+        PLOG(FATAL) << "failed to write to fdevent interrupt eventfd";
+    }
+}
+
+#endif  // defined(__linux__)
diff --git a/adb/fdevent/fdevent_epoll.h b/adb/fdevent/fdevent_epoll.h
new file mode 100644
index 0000000..6214d2e
--- /dev/null
+++ b/adb/fdevent/fdevent_epoll.h
@@ -0,0 +1,56 @@
+#pragma once
+
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if defined(__linux__)
+
+#include "sysdeps.h"
+
+#include <sys/epoll.h>
+
+#include <deque>
+#include <list>
+#include <mutex>
+#include <unordered_map>
+
+#include <android-base/thread_annotations.h>
+
+#include "adb_unique_fd.h"
+#include "fdevent.h"
+
+struct fdevent_context_epoll final : public fdevent_context {
+    fdevent_context_epoll();
+    virtual ~fdevent_context_epoll();
+
+    virtual void Register(fdevent* fde) final;
+    virtual void Unregister(fdevent* fde) final;
+
+    virtual void Set(fdevent* fde, unsigned events) final;
+
+    virtual void Loop() final;
+    size_t InstalledCount() final;
+
+  protected:
+    virtual void Interrupt() final;
+
+  private:
+    unique_fd epoll_fd_;
+    unique_fd interrupt_fd_;
+    fdevent* interrupt_fde_ = nullptr;
+};
+
+#endif  // defined(__linux__)
diff --git a/adb/fdevent/fdevent_poll.cpp b/adb/fdevent/fdevent_poll.cpp
new file mode 100644
index 0000000..ac86c08
--- /dev/null
+++ b/adb/fdevent/fdevent_poll.cpp
@@ -0,0 +1,213 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define TRACE_TAG FDEVENT
+
+#include "sysdeps.h"
+#include "fdevent_poll.h"
+
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <atomic>
+#include <deque>
+#include <functional>
+#include <list>
+#include <mutex>
+#include <optional>
+#include <unordered_map>
+#include <utility>
+#include <variant>
+#include <vector>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/threads.h>
+
+#include "adb_io.h"
+#include "adb_trace.h"
+#include "adb_unique_fd.h"
+#include "adb_utils.h"
+#include "fdevent.h"
+#include "sysdeps/chrono.h"
+
+static void fdevent_interrupt(int fd, unsigned, void*) {
+    char buf[BUFSIZ];
+    ssize_t rc = TEMP_FAILURE_RETRY(adb_read(fd, buf, sizeof(buf)));
+    if (rc == -1) {
+        PLOG(FATAL) << "failed to read from fdevent interrupt fd";
+    }
+}
+
+fdevent_context_poll::fdevent_context_poll() {
+    int s[2];
+    if (adb_socketpair(s) != 0) {
+        PLOG(FATAL) << "failed to create fdevent interrupt socketpair";
+    }
+
+    if (!set_file_block_mode(s[0], false) || !set_file_block_mode(s[1], false)) {
+        PLOG(FATAL) << "failed to make fdevent interrupt socket nonblocking";
+    }
+
+    this->interrupt_fd_.reset(s[0]);
+    fdevent* fde = this->Create(unique_fd(s[1]), fdevent_interrupt, nullptr);
+    CHECK(fde != nullptr);
+    this->Add(fde, FDE_READ);
+}
+
+fdevent_context_poll::~fdevent_context_poll() {
+    // Destroy calls virtual methods, but this class is final, so that's okay.
+    this->Destroy(this->interrupt_fde_);
+}
+
+void fdevent_context_poll::Set(fdevent* fde, unsigned events) {
+    CheckMainThread();
+    fde->state = events;
+    D("fdevent_set: %s, events = %u", dump_fde(fde).c_str(), events);
+}
+
+static std::string dump_pollfds(const std::vector<adb_pollfd>& pollfds) {
+    std::string result;
+    for (const auto& pollfd : pollfds) {
+        std::string op;
+        if (pollfd.events & POLLIN) {
+            op += "R";
+        }
+        if (pollfd.events & POLLOUT) {
+            op += "W";
+        }
+        android::base::StringAppendF(&result, " %d(%s)", pollfd.fd, op.c_str());
+    }
+    return result;
+}
+
+void fdevent_context_poll::Loop() {
+    main_thread_id_ = android::base::GetThreadId();
+
+    std::vector<adb_pollfd> pollfds;
+    std::vector<fdevent_event> poll_events;
+
+    while (true) {
+        if (terminate_loop_) {
+            break;
+        }
+
+        D("--- --- waiting for events");
+        pollfds.clear();
+        for (const auto& [fd, fde] : this->installed_fdevents_) {
+            adb_pollfd pfd;
+            pfd.fd = fd;
+            pfd.events = 0;
+            if (fde.state & FDE_READ) {
+                pfd.events |= POLLIN;
+            }
+            if (fde.state & FDE_WRITE) {
+                pfd.events |= POLLOUT;
+            }
+            if (fde.state & FDE_ERROR) {
+                pfd.events |= POLLERR;
+            }
+#if defined(__linux__)
+            pfd.events |= POLLRDHUP;
+#endif
+            pfd.revents = 0;
+            pollfds.push_back(pfd);
+        }
+        CHECK_GT(pollfds.size(), 0u);
+        D("poll(), pollfds = %s", dump_pollfds(pollfds).c_str());
+
+        std::optional<std::chrono::milliseconds> timeout = CalculatePollDuration();
+        int timeout_ms;
+        if (!timeout) {
+            timeout_ms = -1;
+        } else {
+            timeout_ms = timeout->count();
+        }
+
+        int ret = adb_poll(pollfds.data(), pollfds.size(), timeout_ms);
+        if (ret == -1) {
+            PLOG(ERROR) << "poll(), ret = " << ret;
+            return;
+        }
+
+        auto post_poll = std::chrono::steady_clock::now();
+
+        for (const auto& pollfd : pollfds) {
+            unsigned events = 0;
+            if (pollfd.revents & POLLIN) {
+                events |= FDE_READ;
+            }
+            if (pollfd.revents & POLLOUT) {
+                events |= FDE_WRITE;
+            }
+            if (pollfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
+                // We fake a read, as the rest of the code assumes that errors will
+                // be detected at that point.
+                events |= FDE_READ | FDE_ERROR;
+            }
+#if defined(__linux__)
+            if (pollfd.revents & POLLRDHUP) {
+                events |= FDE_READ | FDE_ERROR;
+            }
+#endif
+
+            auto it = this->installed_fdevents_.find(pollfd.fd);
+            CHECK(it != this->installed_fdevents_.end());
+            fdevent* fde = &it->second;
+
+            if (events == 0) {
+                if (fde->timeout) {
+                    auto deadline = fde->last_active + *fde->timeout;
+                    if (deadline < post_poll) {
+                        events |= FDE_TIMEOUT;
+                    }
+                }
+            }
+
+            if (events != 0) {
+                D("%s got events %x", dump_fde(fde).c_str(), events);
+                poll_events.push_back({fde, events});
+                fde->last_active = post_poll;
+            }
+        }
+        this->HandleEvents(poll_events);
+        poll_events.clear();
+    }
+
+    main_thread_id_.reset();
+}
+
+size_t fdevent_context_poll::InstalledCount() {
+    // We always have an installed fde for interrupt.
+    return this->installed_fdevents_.size() - 1;
+}
+
+void fdevent_context_poll::Interrupt() {
+    int rc = adb_write(this->interrupt_fd_, "", 1);
+
+    // It's possible that we get EAGAIN here, if lots of notifications came in while handling.
+    if (rc == 0) {
+        PLOG(FATAL) << "fdevent interrupt fd was closed?";
+    } else if (rc == -1 && errno != EAGAIN) {
+        PLOG(FATAL) << "failed to write to fdevent interrupt fd";
+    }
+}
diff --git a/adb/fdevent/fdevent_poll.h b/adb/fdevent/fdevent_poll.h
new file mode 100644
index 0000000..98abab2
--- /dev/null
+++ b/adb/fdevent/fdevent_poll.h
@@ -0,0 +1,63 @@
+#pragma once
+
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "sysdeps.h"
+
+#include <deque>
+#include <list>
+#include <mutex>
+#include <unordered_map>
+
+#include <android-base/thread_annotations.h>
+
+#include "adb_unique_fd.h"
+#include "fdevent.h"
+
+struct PollNode {
+  fdevent* fde;
+  adb_pollfd pollfd;
+
+  explicit PollNode(fdevent* fde) : fde(fde) {
+      memset(&pollfd, 0, sizeof(pollfd));
+      pollfd.fd = fde->fd.get();
+
+#if defined(__linux__)
+      // Always enable POLLRDHUP, so the host server can take action when some clients disconnect.
+      // Then we can avoid leaving many sockets in CLOSE_WAIT state. See http://b/23314034.
+      pollfd.events = POLLRDHUP;
+#endif
+  }
+};
+
+struct fdevent_context_poll final : public fdevent_context {
+    fdevent_context_poll();
+    virtual ~fdevent_context_poll();
+
+    virtual void Set(fdevent* fde, unsigned events) final;
+
+    virtual void Loop() final;
+
+    virtual size_t InstalledCount() final;
+
+  protected:
+    virtual void Interrupt() final;
+
+  public:
+    unique_fd interrupt_fd_;
+    fdevent* interrupt_fde_ = nullptr;
+};
diff --git a/adb/fdevent/fdevent_test.cpp b/adb/fdevent/fdevent_test.cpp
new file mode 100644
index 0000000..e06b3b3
--- /dev/null
+++ b/adb/fdevent/fdevent_test.cpp
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fdevent.h"
+
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <limits>
+#include <memory>
+#include <queue>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include "adb_io.h"
+#include "fdevent_test.h"
+
+using namespace std::chrono_literals;
+
+class FdHandler {
+  public:
+    FdHandler(int read_fd, int write_fd, bool use_new_callback)
+        : read_fd_(read_fd), write_fd_(write_fd) {
+        if (use_new_callback) {
+            read_fde_ = fdevent_create(read_fd_, FdEventNewCallback, this);
+            write_fde_ = fdevent_create(write_fd_, FdEventNewCallback, this);
+        } else {
+            read_fde_ = fdevent_create(read_fd_, FdEventCallback, this);
+            write_fde_ = fdevent_create(write_fd_, FdEventCallback, this);
+        }
+        fdevent_add(read_fde_, FDE_READ);
+    }
+
+    ~FdHandler() {
+        fdevent_destroy(read_fde_);
+        fdevent_destroy(write_fde_);
+    }
+
+  private:
+    static void FdEventCallback(int fd, unsigned events, void* userdata) {
+        FdHandler* handler = reinterpret_cast<FdHandler*>(userdata);
+        ASSERT_EQ(0u, (events & ~(FDE_READ | FDE_WRITE))) << "unexpected events: " << events;
+        if (events & FDE_READ) {
+            ASSERT_EQ(fd, handler->read_fd_);
+            char c;
+            ASSERT_EQ(1, adb_read(fd, &c, 1));
+            handler->queue_.push(c);
+            fdevent_add(handler->write_fde_, FDE_WRITE);
+        }
+        if (events & FDE_WRITE) {
+            ASSERT_EQ(fd, handler->write_fd_);
+            ASSERT_FALSE(handler->queue_.empty());
+            char c = handler->queue_.front();
+            handler->queue_.pop();
+            ASSERT_EQ(1, adb_write(fd, &c, 1));
+            if (handler->queue_.empty()) {
+                fdevent_del(handler->write_fde_, FDE_WRITE);
+            }
+        }
+    }
+
+    static void FdEventNewCallback(fdevent* fde, unsigned events, void* userdata) {
+        int fd = fde->fd.get();
+        FdHandler* handler = reinterpret_cast<FdHandler*>(userdata);
+        ASSERT_EQ(0u, (events & ~(FDE_READ | FDE_WRITE))) << "unexpected events: " << events;
+        if (events & FDE_READ) {
+            ASSERT_EQ(fd, handler->read_fd_);
+            char c;
+            ASSERT_EQ(1, adb_read(fd, &c, 1));
+            handler->queue_.push(c);
+            fdevent_add(handler->write_fde_, FDE_WRITE);
+        }
+        if (events & FDE_WRITE) {
+            ASSERT_EQ(fd, handler->write_fd_);
+            ASSERT_FALSE(handler->queue_.empty());
+            char c = handler->queue_.front();
+            handler->queue_.pop();
+            ASSERT_EQ(1, adb_write(fd, &c, 1));
+            if (handler->queue_.empty()) {
+                fdevent_del(handler->write_fde_, FDE_WRITE);
+            }
+        }
+    }
+
+  private:
+    const int read_fd_;
+    const int write_fd_;
+    fdevent* read_fde_;
+    fdevent* write_fde_;
+    std::queue<char> queue_;
+};
+
+struct ThreadArg {
+    int first_read_fd;
+    int last_write_fd;
+    size_t middle_pipe_count;
+};
+
+TEST_F(FdeventTest, fdevent_terminate) {
+    PrepareThread();
+    TerminateThread();
+}
+
+TEST_F(FdeventTest, smoke) {
+    for (bool use_new_callback : {true, false}) {
+        fdevent_reset();
+        const size_t PIPE_COUNT = 512;
+        const size_t MESSAGE_LOOP_COUNT = 10;
+        const std::string MESSAGE = "fdevent_test";
+        int fd_pair1[2];
+        int fd_pair2[2];
+        ASSERT_EQ(0, adb_socketpair(fd_pair1));
+        ASSERT_EQ(0, adb_socketpair(fd_pair2));
+        ThreadArg thread_arg;
+        thread_arg.first_read_fd = fd_pair1[0];
+        thread_arg.last_write_fd = fd_pair2[1];
+        thread_arg.middle_pipe_count = PIPE_COUNT;
+        int writer = fd_pair1[1];
+        int reader = fd_pair2[0];
+
+        PrepareThread();
+
+        std::vector<std::unique_ptr<FdHandler>> fd_handlers;
+        fdevent_run_on_main_thread([&thread_arg, &fd_handlers, use_new_callback]() {
+            std::vector<int> read_fds;
+            std::vector<int> write_fds;
+
+            read_fds.push_back(thread_arg.first_read_fd);
+            for (size_t i = 0; i < thread_arg.middle_pipe_count; ++i) {
+                int fds[2];
+                ASSERT_EQ(0, adb_socketpair(fds));
+                read_fds.push_back(fds[0]);
+                write_fds.push_back(fds[1]);
+            }
+            write_fds.push_back(thread_arg.last_write_fd);
+
+            for (size_t i = 0; i < read_fds.size(); ++i) {
+                fd_handlers.push_back(
+                        std::make_unique<FdHandler>(read_fds[i], write_fds[i], use_new_callback));
+            }
+        });
+        WaitForFdeventLoop();
+
+        for (size_t i = 0; i < MESSAGE_LOOP_COUNT; ++i) {
+            std::string read_buffer = MESSAGE;
+            std::string write_buffer(MESSAGE.size(), 'a');
+            ASSERT_TRUE(WriteFdExactly(writer, read_buffer.c_str(), read_buffer.size()));
+            ASSERT_TRUE(ReadFdExactly(reader, &write_buffer[0], write_buffer.size()));
+            ASSERT_EQ(read_buffer, write_buffer);
+        }
+
+        fdevent_run_on_main_thread([&fd_handlers]() { fd_handlers.clear(); });
+        WaitForFdeventLoop();
+
+        TerminateThread();
+        ASSERT_EQ(0, adb_close(writer));
+        ASSERT_EQ(0, adb_close(reader));
+    }
+}
+
+TEST_F(FdeventTest, run_on_main_thread) {
+    std::vector<int> vec;
+
+    PrepareThread();
+
+    // Block the main thread for a long time while we queue our callbacks.
+    fdevent_run_on_main_thread([]() {
+        check_main_thread();
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+    });
+
+    for (int i = 0; i < 1000000; ++i) {
+        fdevent_run_on_main_thread([i, &vec]() {
+            check_main_thread();
+            vec.push_back(i);
+        });
+    }
+
+    TerminateThread();
+
+    ASSERT_EQ(1000000u, vec.size());
+    for (int i = 0; i < 1000000; ++i) {
+        ASSERT_EQ(i, vec[i]);
+    }
+}
+
+static std::function<void()> make_appender(std::vector<int>* vec, int value) {
+    return [vec, value]() {
+        check_main_thread();
+        if (value == 100) {
+            return;
+        }
+
+        vec->push_back(value);
+        fdevent_run_on_main_thread(make_appender(vec, value + 1));
+    };
+}
+
+TEST_F(FdeventTest, run_on_main_thread_reentrant) {
+    std::vector<int> vec;
+
+    PrepareThread();
+    fdevent_run_on_main_thread(make_appender(&vec, 0));
+    TerminateThread();
+
+    ASSERT_EQ(100u, vec.size());
+    for (int i = 0; i < 100; ++i) {
+        ASSERT_EQ(i, vec[i]);
+    }
+}
+
+TEST_F(FdeventTest, timeout) {
+    fdevent_reset();
+    PrepareThread();
+
+    enum class TimeoutEvent {
+        read,
+        timeout,
+        done,
+    };
+
+    struct TimeoutTest {
+        std::vector<std::pair<TimeoutEvent, std::chrono::steady_clock::time_point>> events;
+        fdevent* fde;
+    };
+    TimeoutTest test;
+
+    int fds[2];
+    ASSERT_EQ(0, adb_socketpair(fds));
+    static constexpr auto delta = 100ms;
+    fdevent_run_on_main_thread([&]() {
+        test.fde = fdevent_create(fds[0], [](fdevent* fde, unsigned events, void* arg) {
+            auto test = static_cast<TimeoutTest*>(arg);
+            auto now = std::chrono::steady_clock::now();
+            CHECK((events & FDE_READ) ^ (events & FDE_TIMEOUT));
+            TimeoutEvent event;
+            if ((events & FDE_READ)) {
+                char buf[2];
+                ssize_t rc = adb_read(fde->fd.get(), buf, sizeof(buf));
+                if (rc == 0) {
+                    event = TimeoutEvent::done;
+                } else if (rc == 1) {
+                    event = TimeoutEvent::read;
+                } else {
+                    abort();
+                }
+            } else if ((events & FDE_TIMEOUT)) {
+                event = TimeoutEvent::timeout;
+            } else {
+                abort();
+            }
+
+            CHECK_EQ(fde, test->fde);
+            test->events.emplace_back(event, now);
+
+            if (event == TimeoutEvent::done) {
+                fdevent_destroy(fde);
+            }
+        }, &test);
+        fdevent_add(test.fde, FDE_READ);
+        fdevent_set_timeout(test.fde, delta);
+    });
+
+    ASSERT_EQ(1, adb_write(fds[1], "", 1));
+
+    // Timeout should happen here
+    std::this_thread::sleep_for(delta);
+
+    // and another.
+    std::this_thread::sleep_for(delta);
+
+    // No timeout should happen here.
+    std::this_thread::sleep_for(delta / 2);
+    adb_close(fds[1]);
+
+    TerminateThread();
+
+    ASSERT_EQ(4ULL, test.events.size());
+    ASSERT_EQ(TimeoutEvent::read, test.events[0].first);
+    ASSERT_EQ(TimeoutEvent::timeout, test.events[1].first);
+    ASSERT_EQ(TimeoutEvent::timeout, test.events[2].first);
+    ASSERT_EQ(TimeoutEvent::done, test.events[3].first);
+
+    std::vector<int> time_deltas;
+    for (size_t i = 0; i < test.events.size() - 1; ++i) {
+        auto before = test.events[i].second;
+        auto after = test.events[i + 1].second;
+        auto diff = std::chrono::duration_cast<std::chrono::milliseconds>(after - before);
+        time_deltas.push_back(diff.count());
+    }
+
+    std::vector<int> expected = {
+        delta.count(),
+        delta.count(),
+        delta.count() / 2,
+    };
+
+    std::vector<int> diff;
+    ASSERT_EQ(time_deltas.size(), expected.size());
+    for (size_t i = 0; i < time_deltas.size(); ++i) {
+        diff.push_back(std::abs(time_deltas[i] - expected[i]));
+    }
+
+    ASSERT_LT(diff[0], delta.count() * 0.5);
+    ASSERT_LT(diff[1], delta.count() * 0.5);
+    ASSERT_LT(diff[2], delta.count() * 0.5);
+}
diff --git a/adb/fdevent/fdevent_test.h b/adb/fdevent/fdevent_test.h
new file mode 100644
index 0000000..ecda4da
--- /dev/null
+++ b/adb/fdevent/fdevent_test.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+
+#include "adb_io.h"
+#include "adb_unique_fd.h"
+#include "socket.h"
+#include "sysdeps.h"
+#include "sysdeps/chrono.h"
+
+static void WaitForFdeventLoop() {
+    // Sleep for a bit to make sure that network events have propagated.
+    std::this_thread::sleep_for(100ms);
+
+    // fdevent_run_on_main_thread has a guaranteed ordering, and is guaranteed to happen after
+    // socket events, so as soon as our function is called, we know that we've processed all
+    // previous events.
+    std::mutex mutex;
+    std::condition_variable cv;
+    std::unique_lock<std::mutex> lock(mutex);
+    fdevent_run_on_main_thread([&]() {
+        mutex.lock();
+        mutex.unlock();
+        cv.notify_one();
+    });
+    cv.wait(lock);
+}
+
+class FdeventTest : public ::testing::Test {
+  protected:
+    unique_fd dummy;
+
+    ~FdeventTest() {
+        if (thread_.joinable()) {
+            TerminateThread();
+        }
+    }
+
+    static void SetUpTestCase() {
+#if !defined(_WIN32)
+        ASSERT_NE(SIG_ERR, signal(SIGPIPE, SIG_IGN));
+#endif
+    }
+
+    void SetUp() override {
+        fdevent_reset();
+        ASSERT_EQ(0u, fdevent_installed_count());
+    }
+
+    // Register a dummy socket used to wake up the fdevent loop to tell it to die.
+    void PrepareThread() {
+        int dummy_fds[2];
+        if (adb_socketpair(dummy_fds) != 0) {
+            FAIL() << "failed to create socketpair: " << strerror(errno);
+        }
+
+        asocket* dummy_socket = create_local_socket(unique_fd(dummy_fds[1]));
+        if (!dummy_socket) {
+            FAIL() << "failed to create local socket: " << strerror(errno);
+        }
+        dummy_socket->ready(dummy_socket);
+        dummy.reset(dummy_fds[0]);
+
+        thread_ = std::thread([]() { fdevent_loop(); });
+        WaitForFdeventLoop();
+    }
+
+    size_t GetAdditionalLocalSocketCount() {
+        // dummy socket installed in PrepareThread()
+        return 1;
+    }
+
+    void TerminateThread() {
+        fdevent_terminate_loop();
+        ASSERT_TRUE(WriteFdExactly(dummy, "", 1));
+        thread_.join();
+        dummy.reset();
+    }
+
+    std::thread thread_;
+};
diff --git a/adb/fdevent_test.cpp b/adb/fdevent_test.cpp
deleted file mode 100644
index 682f061..0000000
--- a/adb/fdevent_test.cpp
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "fdevent.h"
-
-#include <gtest/gtest.h>
-
-#include <chrono>
-#include <limits>
-#include <memory>
-#include <queue>
-#include <string>
-#include <thread>
-#include <vector>
-
-#include "adb_io.h"
-#include "fdevent_test.h"
-
-using namespace std::chrono_literals;
-
-class FdHandler {
-  public:
-    FdHandler(int read_fd, int write_fd, bool use_new_callback)
-        : read_fd_(read_fd), write_fd_(write_fd) {
-        if (use_new_callback) {
-            read_fde_ = fdevent_create(read_fd_, FdEventNewCallback, this);
-            write_fde_ = fdevent_create(write_fd_, FdEventNewCallback, this);
-        } else {
-            read_fde_ = fdevent_create(read_fd_, FdEventCallback, this);
-            write_fde_ = fdevent_create(write_fd_, FdEventCallback, this);
-        }
-        fdevent_add(read_fde_, FDE_READ);
-    }
-
-    ~FdHandler() {
-        fdevent_destroy(read_fde_);
-        fdevent_destroy(write_fde_);
-    }
-
-  private:
-    static void FdEventCallback(int fd, unsigned events, void* userdata) {
-        FdHandler* handler = reinterpret_cast<FdHandler*>(userdata);
-        ASSERT_EQ(0u, (events & ~(FDE_READ | FDE_WRITE))) << "unexpected events: " << events;
-        if (events & FDE_READ) {
-            ASSERT_EQ(fd, handler->read_fd_);
-            char c;
-            ASSERT_EQ(1, adb_read(fd, &c, 1));
-            handler->queue_.push(c);
-            fdevent_add(handler->write_fde_, FDE_WRITE);
-        }
-        if (events & FDE_WRITE) {
-            ASSERT_EQ(fd, handler->write_fd_);
-            ASSERT_FALSE(handler->queue_.empty());
-            char c = handler->queue_.front();
-            handler->queue_.pop();
-            ASSERT_EQ(1, adb_write(fd, &c, 1));
-            if (handler->queue_.empty()) {
-                fdevent_del(handler->write_fde_, FDE_WRITE);
-            }
-        }
-    }
-
-    static void FdEventNewCallback(fdevent* fde, unsigned events, void* userdata) {
-        int fd = fde->fd.get();
-        FdHandler* handler = reinterpret_cast<FdHandler*>(userdata);
-        ASSERT_EQ(0u, (events & ~(FDE_READ | FDE_WRITE))) << "unexpected events: " << events;
-        if (events & FDE_READ) {
-            ASSERT_EQ(fd, handler->read_fd_);
-            char c;
-            ASSERT_EQ(1, adb_read(fd, &c, 1));
-            handler->queue_.push(c);
-            fdevent_add(handler->write_fde_, FDE_WRITE);
-        }
-        if (events & FDE_WRITE) {
-            ASSERT_EQ(fd, handler->write_fd_);
-            ASSERT_FALSE(handler->queue_.empty());
-            char c = handler->queue_.front();
-            handler->queue_.pop();
-            ASSERT_EQ(1, adb_write(fd, &c, 1));
-            if (handler->queue_.empty()) {
-                fdevent_del(handler->write_fde_, FDE_WRITE);
-            }
-        }
-    }
-
-  private:
-    const int read_fd_;
-    const int write_fd_;
-    fdevent* read_fde_;
-    fdevent* write_fde_;
-    std::queue<char> queue_;
-};
-
-struct ThreadArg {
-    int first_read_fd;
-    int last_write_fd;
-    size_t middle_pipe_count;
-};
-
-TEST_F(FdeventTest, fdevent_terminate) {
-    PrepareThread();
-    TerminateThread();
-}
-
-TEST_F(FdeventTest, smoke) {
-    for (bool use_new_callback : {true, false}) {
-        fdevent_reset();
-        const size_t PIPE_COUNT = 10;
-        const size_t MESSAGE_LOOP_COUNT = 100;
-        const std::string MESSAGE = "fdevent_test";
-        int fd_pair1[2];
-        int fd_pair2[2];
-        ASSERT_EQ(0, adb_socketpair(fd_pair1));
-        ASSERT_EQ(0, adb_socketpair(fd_pair2));
-        ThreadArg thread_arg;
-        thread_arg.first_read_fd = fd_pair1[0];
-        thread_arg.last_write_fd = fd_pair2[1];
-        thread_arg.middle_pipe_count = PIPE_COUNT;
-        int writer = fd_pair1[1];
-        int reader = fd_pair2[0];
-
-        PrepareThread();
-
-        std::vector<std::unique_ptr<FdHandler>> fd_handlers;
-        fdevent_run_on_main_thread([&thread_arg, &fd_handlers, use_new_callback]() {
-            std::vector<int> read_fds;
-            std::vector<int> write_fds;
-
-            read_fds.push_back(thread_arg.first_read_fd);
-            for (size_t i = 0; i < thread_arg.middle_pipe_count; ++i) {
-                int fds[2];
-                ASSERT_EQ(0, adb_socketpair(fds));
-                read_fds.push_back(fds[0]);
-                write_fds.push_back(fds[1]);
-            }
-            write_fds.push_back(thread_arg.last_write_fd);
-
-            for (size_t i = 0; i < read_fds.size(); ++i) {
-                fd_handlers.push_back(
-                        std::make_unique<FdHandler>(read_fds[i], write_fds[i], use_new_callback));
-            }
-        });
-        WaitForFdeventLoop();
-
-        for (size_t i = 0; i < MESSAGE_LOOP_COUNT; ++i) {
-            std::string read_buffer = MESSAGE;
-            std::string write_buffer(MESSAGE.size(), 'a');
-            ASSERT_TRUE(WriteFdExactly(writer, read_buffer.c_str(), read_buffer.size()));
-            ASSERT_TRUE(ReadFdExactly(reader, &write_buffer[0], write_buffer.size()));
-            ASSERT_EQ(read_buffer, write_buffer);
-        }
-
-        fdevent_run_on_main_thread([&fd_handlers]() { fd_handlers.clear(); });
-        WaitForFdeventLoop();
-
-        TerminateThread();
-        ASSERT_EQ(0, adb_close(writer));
-        ASSERT_EQ(0, adb_close(reader));
-    }
-}
-
-struct InvalidFdArg {
-    fdevent* fde;
-    unsigned expected_events;
-    size_t* happened_event_count;
-};
-
-static void InvalidFdEventCallback(int, unsigned events, void* userdata) {
-    InvalidFdArg* arg = reinterpret_cast<InvalidFdArg*>(userdata);
-    ASSERT_EQ(arg->expected_events, events);
-    fdevent_destroy(arg->fde);
-    if (++*(arg->happened_event_count) == 2) {
-        fdevent_terminate_loop();
-    }
-}
-
-static void InvalidFdThreadFunc() {
-    const int INVALID_READ_FD = std::numeric_limits<int>::max() - 1;
-    size_t happened_event_count = 0;
-    InvalidFdArg read_arg;
-    read_arg.expected_events = FDE_READ | FDE_ERROR;
-    read_arg.happened_event_count = &happened_event_count;
-    read_arg.fde = fdevent_create(INVALID_READ_FD, InvalidFdEventCallback, &read_arg);
-    fdevent_add(read_arg.fde, FDE_READ);
-
-    const int INVALID_WRITE_FD = std::numeric_limits<int>::max();
-    InvalidFdArg write_arg;
-    write_arg.expected_events = FDE_READ | FDE_ERROR;
-    write_arg.happened_event_count = &happened_event_count;
-    write_arg.fde = fdevent_create(INVALID_WRITE_FD, InvalidFdEventCallback, &write_arg);
-    fdevent_add(write_arg.fde, FDE_WRITE);
-    fdevent_loop();
-}
-
-TEST_F(FdeventTest, invalid_fd) {
-    std::thread thread(InvalidFdThreadFunc);
-    thread.join();
-}
-
-TEST_F(FdeventTest, run_on_main_thread) {
-    std::vector<int> vec;
-
-    PrepareThread();
-
-    // Block the main thread for a long time while we queue our callbacks.
-    fdevent_run_on_main_thread([]() {
-        check_main_thread();
-        std::this_thread::sleep_for(std::chrono::seconds(1));
-    });
-
-    for (int i = 0; i < 1000000; ++i) {
-        fdevent_run_on_main_thread([i, &vec]() {
-            check_main_thread();
-            vec.push_back(i);
-        });
-    }
-
-    TerminateThread();
-
-    ASSERT_EQ(1000000u, vec.size());
-    for (int i = 0; i < 1000000; ++i) {
-        ASSERT_EQ(i, vec[i]);
-    }
-}
-
-static std::function<void()> make_appender(std::vector<int>* vec, int value) {
-    return [vec, value]() {
-        check_main_thread();
-        if (value == 100) {
-            return;
-        }
-
-        vec->push_back(value);
-        fdevent_run_on_main_thread(make_appender(vec, value + 1));
-    };
-}
-
-TEST_F(FdeventTest, run_on_main_thread_reentrant) {
-    std::vector<int> vec;
-
-    PrepareThread();
-    fdevent_run_on_main_thread(make_appender(&vec, 0));
-    TerminateThread();
-
-    ASSERT_EQ(100u, vec.size());
-    for (int i = 0; i < 100; ++i) {
-        ASSERT_EQ(i, vec[i]);
-    }
-}
-
-TEST_F(FdeventTest, timeout) {
-    fdevent_reset();
-    PrepareThread();
-
-    enum class TimeoutEvent {
-        read,
-        timeout,
-        done,
-    };
-
-    struct TimeoutTest {
-        std::vector<std::pair<TimeoutEvent, std::chrono::steady_clock::time_point>> events;
-        fdevent* fde;
-    };
-    TimeoutTest test;
-
-    int fds[2];
-    ASSERT_EQ(0, adb_socketpair(fds));
-    static constexpr auto delta = 100ms;
-    fdevent_run_on_main_thread([&]() {
-        test.fde = fdevent_create(fds[0], [](fdevent* fde, unsigned events, void* arg) {
-            auto test = static_cast<TimeoutTest*>(arg);
-            auto now = std::chrono::steady_clock::now();
-            CHECK((events & FDE_READ) ^ (events & FDE_TIMEOUT));
-            TimeoutEvent event;
-            if ((events & FDE_READ)) {
-                char buf[2];
-                ssize_t rc = adb_read(fde->fd.get(), buf, sizeof(buf));
-                if (rc == 0) {
-                    event = TimeoutEvent::done;
-                } else if (rc == 1) {
-                    event = TimeoutEvent::read;
-                } else {
-                    abort();
-                }
-            } else if ((events & FDE_TIMEOUT)) {
-                event = TimeoutEvent::timeout;
-            } else {
-                abort();
-            }
-
-            CHECK_EQ(fde, test->fde);
-            test->events.emplace_back(event, now);
-
-            if (event == TimeoutEvent::done) {
-                fdevent_destroy(fde);
-            }
-        }, &test);
-        fdevent_add(test.fde, FDE_READ);
-        fdevent_set_timeout(test.fde, delta);
-    });
-
-    ASSERT_EQ(1, adb_write(fds[1], "", 1));
-
-    // Timeout should happen here
-    std::this_thread::sleep_for(delta);
-
-    // and another.
-    std::this_thread::sleep_for(delta);
-
-    // No timeout should happen here.
-    std::this_thread::sleep_for(delta / 2);
-    adb_close(fds[1]);
-
-    TerminateThread();
-
-    ASSERT_EQ(4ULL, test.events.size());
-    ASSERT_EQ(TimeoutEvent::read, test.events[0].first);
-    ASSERT_EQ(TimeoutEvent::timeout, test.events[1].first);
-    ASSERT_EQ(TimeoutEvent::timeout, test.events[2].first);
-    ASSERT_EQ(TimeoutEvent::done, test.events[3].first);
-
-    std::vector<int> time_deltas;
-    for (size_t i = 0; i < test.events.size() - 1; ++i) {
-        auto before = test.events[i].second;
-        auto after = test.events[i + 1].second;
-        auto diff = std::chrono::duration_cast<std::chrono::milliseconds>(after - before);
-        time_deltas.push_back(diff.count());
-    }
-
-    std::vector<int> expected = {
-        delta.count(),
-        delta.count(),
-        delta.count() / 2,
-    };
-
-    std::vector<int> diff;
-    ASSERT_EQ(time_deltas.size(), expected.size());
-    for (size_t i = 0; i < time_deltas.size(); ++i) {
-        diff.push_back(std::abs(time_deltas[i] - expected[i]));
-    }
-
-    ASSERT_LT(diff[0], delta.count() * 0.5);
-    ASSERT_LT(diff[1], delta.count() * 0.5);
-    ASSERT_LT(diff[2], delta.count() * 0.5);
-}
diff --git a/adb/fdevent_test.h b/adb/fdevent_test.h
deleted file mode 100644
index 24bce59..0000000
--- a/adb/fdevent_test.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gtest/gtest.h>
-
-#include <condition_variable>
-#include <mutex>
-#include <thread>
-
-#include "adb_io.h"
-#include "adb_unique_fd.h"
-#include "socket.h"
-#include "sysdeps.h"
-#include "sysdeps/chrono.h"
-
-static void WaitForFdeventLoop() {
-    // Sleep for a bit to make sure that network events have propagated.
-    std::this_thread::sleep_for(100ms);
-
-    // fdevent_run_on_main_thread has a guaranteed ordering, and is guaranteed to happen after
-    // socket events, so as soon as our function is called, we know that we've processed all
-    // previous events.
-    std::mutex mutex;
-    std::condition_variable cv;
-    std::unique_lock<std::mutex> lock(mutex);
-    fdevent_run_on_main_thread([&]() {
-        mutex.lock();
-        mutex.unlock();
-        cv.notify_one();
-    });
-    cv.wait(lock);
-}
-
-class FdeventTest : public ::testing::Test {
-  protected:
-    unique_fd dummy;
-
-    static void SetUpTestCase() {
-#if !defined(_WIN32)
-        ASSERT_NE(SIG_ERR, signal(SIGPIPE, SIG_IGN));
-#endif
-    }
-
-    void SetUp() override {
-        fdevent_reset();
-        ASSERT_EQ(0u, fdevent_installed_count());
-    }
-
-    // Register a dummy socket used to wake up the fdevent loop to tell it to die.
-    void PrepareThread() {
-        int dummy_fds[2];
-        if (adb_socketpair(dummy_fds) != 0) {
-            FAIL() << "failed to create socketpair: " << strerror(errno);
-        }
-
-        asocket* dummy_socket = create_local_socket(unique_fd(dummy_fds[1]));
-        if (!dummy_socket) {
-            FAIL() << "failed to create local socket: " << strerror(errno);
-        }
-        dummy_socket->ready(dummy_socket);
-        dummy.reset(dummy_fds[0]);
-
-        thread_ = std::thread([]() { fdevent_loop(); });
-        WaitForFdeventLoop();
-    }
-
-    size_t GetAdditionalLocalSocketCount() {
-        // dummy socket installed in PrepareThread() + fdevent_run_on_main_thread socket
-        return 2;
-    }
-
-    void TerminateThread() {
-        fdevent_terminate_loop();
-        ASSERT_TRUE(WriteFdExactly(dummy, "", 1));
-        thread_.join();
-        dummy.reset();
-    }
-
-    std::thread thread_;
-};
diff --git a/adb/file_sync_protocol.h b/adb/file_sync_protocol.h
index 108639a..fd9a516 100644
--- a/adb/file_sync_protocol.h
+++ b/adb/file_sync_protocol.h
@@ -21,10 +21,16 @@
 #define ID_LSTAT_V1 MKID('S', 'T', 'A', 'T')
 #define ID_STAT_V2 MKID('S', 'T', 'A', '2')
 #define ID_LSTAT_V2 MKID('L', 'S', 'T', '2')
-#define ID_LIST MKID('L', 'I', 'S', 'T')
-#define ID_SEND MKID('S', 'E', 'N', 'D')
-#define ID_RECV MKID('R', 'E', 'C', 'V')
-#define ID_DENT MKID('D', 'E', 'N', 'T')
+
+#define ID_LIST_V1 MKID('L', 'I', 'S', 'T')
+#define ID_LIST_V2 MKID('L', 'I', 'S', '2')
+#define ID_DENT_V1 MKID('D', 'E', 'N', 'T')
+#define ID_DENT_V2 MKID('D', 'N', 'T', '2')
+
+#define ID_SEND_V1 MKID('S', 'E', 'N', 'D')
+#define ID_SEND_V2 MKID('S', 'N', 'D', '2')
+#define ID_RECV_V1 MKID('R', 'E', 'C', 'V')
+#define ID_RECV_V2 MKID('R', 'C', 'V', '2')
 #define ID_DONE MKID('D', 'O', 'N', 'E')
 #define ID_DATA MKID('D', 'A', 'T', 'A')
 #define ID_OKAY MKID('O', 'K', 'A', 'Y')
@@ -37,42 +43,91 @@
     // Followed by 'path_length' bytes of path (not NUL-terminated).
 } __attribute__((packed));
 
+struct __attribute__((packed)) sync_stat_v1 {
+    uint32_t id;
+    uint32_t mode;
+    uint32_t size;
+    uint32_t mtime;
+};
+
+struct __attribute__((packed)) sync_stat_v2 {
+    uint32_t id;
+    uint32_t error;
+    uint64_t dev;
+    uint64_t ino;
+    uint32_t mode;
+    uint32_t nlink;
+    uint32_t uid;
+    uint32_t gid;
+    uint64_t size;
+    int64_t atime;
+    int64_t mtime;
+    int64_t ctime;
+};
+
+struct __attribute__((packed)) sync_dent_v1 {
+    uint32_t id;
+    uint32_t mode;
+    uint32_t size;
+    uint32_t mtime;
+    uint32_t namelen;
+};  // followed by `namelen` bytes of the name.
+
+struct __attribute__((packed)) sync_dent_v2 {
+    uint32_t id;
+    uint32_t error;
+    uint64_t dev;
+    uint64_t ino;
+    uint32_t mode;
+    uint32_t nlink;
+    uint32_t uid;
+    uint32_t gid;
+    uint64_t size;
+    int64_t atime;
+    int64_t mtime;
+    int64_t ctime;
+    uint32_t namelen;
+};  // followed by `namelen` bytes of the name.
+
+enum SyncFlag : uint32_t {
+    kSyncFlagNone = 0,
+    kSyncFlagBrotli = 1,
+};
+
+// send_v1 sent the path in a buffer, followed by a comma and the mode as a string.
+// send_v2 sends just the path in the first request, and then sends another syncmsg (with the
+// same ID!) with details.
+struct __attribute__((packed)) sync_send_v2 {
+    uint32_t id;
+    uint32_t mode;
+    uint32_t flags;
+};
+
+// Likewise, recv_v1 just sent the path without any accompanying data.
+struct __attribute__((packed)) sync_recv_v2 {
+    uint32_t id;
+    uint32_t flags;
+};
+
+struct __attribute__((packed)) sync_data {
+    uint32_t id;
+    uint32_t size;
+};  // followed by `size` bytes of data.
+
+struct __attribute__((packed)) sync_status {
+    uint32_t id;
+    uint32_t msglen;
+};  // followed by `msglen` bytes of error message, if id == ID_FAIL.
+
 union syncmsg {
-    struct __attribute__((packed)) {
-        uint32_t id;
-        uint32_t mode;
-        uint32_t size;
-        uint32_t time;
-    } stat_v1;
-    struct __attribute__((packed)) {
-        uint32_t id;
-        uint32_t error;
-        uint64_t dev;
-        uint64_t ino;
-        uint32_t mode;
-        uint32_t nlink;
-        uint32_t uid;
-        uint32_t gid;
-        uint64_t size;
-        int64_t atime;
-        int64_t mtime;
-        int64_t ctime;
-    } stat_v2;
-    struct __attribute__((packed)) {
-        uint32_t id;
-        uint32_t mode;
-        uint32_t size;
-        uint32_t time;
-        uint32_t namelen;
-    } dent;
-    struct __attribute__((packed)) {
-        uint32_t id;
-        uint32_t size;
-    } data;
-    struct __attribute__((packed)) {
-        uint32_t id;
-        uint32_t msglen;
-    } status;
+    sync_stat_v1 stat_v1;
+    sync_stat_v2 stat_v2;
+    sync_dent_v1 dent_v1;
+    sync_dent_v2 dent_v2;
+    sync_data data;
+    sync_status status;
+    sync_send_v2 send_v2_setup;
+    sync_recv_v2 recv_v2_setup;
 };
 
 #define SYNC_DATA_MAX (64 * 1024)
diff --git a/adb/libs/.clang-format b/adb/libs/.clang-format
new file mode 120000
index 0000000..e545823
--- /dev/null
+++ b/adb/libs/.clang-format
@@ -0,0 +1 @@
+../../.clang-format-2
\ No newline at end of file
diff --git a/adb/libs/adbconnection/.clang-format b/adb/libs/adbconnection/.clang-format
new file mode 120000
index 0000000..e545823
--- /dev/null
+++ b/adb/libs/adbconnection/.clang-format
@@ -0,0 +1 @@
+../../.clang-format-2
\ No newline at end of file
diff --git a/adb/libs/adbconnection/Android.bp b/adb/libs/adbconnection/Android.bp
new file mode 100644
index 0000000..ce2ab51
--- /dev/null
+++ b/adb/libs/adbconnection/Android.bp
@@ -0,0 +1,64 @@
+// libadbconnection
+// =========================================================
+// libadbconnection_client/server implement the socket handling for jdwp
+// forwarding and the track-jdwp service.
+cc_library {
+    name: "libadbconnection_server",
+    srcs: ["adbconnection_server.cpp"],
+
+    export_include_dirs: ["include"],
+
+    stl: "libc++_static",
+    shared_libs: ["liblog"],
+    static_libs: ["libbase"],
+
+    defaults: ["adbd_defaults", "host_adbd_supported"],
+
+    // Avoid getting duplicate symbol of android::build::GetBuildNumber().
+    use_version_lib: false,
+
+    recovery_available: true,
+    apex_available: [
+        "com.android.adbd",
+        // TODO(b/151398197) remove the below
+        "//apex_available:platform",
+    ],
+    compile_multilib: "both",
+}
+
+cc_library {
+    name: "libadbconnection_client",
+    srcs: ["adbconnection_client.cpp"],
+
+    export_include_dirs: ["include"],
+
+    stl: "libc++_static",
+    shared_libs: ["liblog"],
+    static_libs: ["libbase"],
+
+    defaults: ["adbd_defaults"],
+    visibility: [
+        "//art:__subpackages__",
+        "//system/core/adb/apex:__subpackages__",
+    ],
+    apex_available: [
+        "com.android.adbd",
+        "test_com.android.adbd",
+    ],
+
+    // libadbconnection_client doesn't need an embedded build number.
+    use_version_lib: false,
+
+    target: {
+        linux: {
+            version_script: "libadbconnection_client.map.txt",
+        },
+    },
+    stubs: {
+        symbol_file: "libadbconnection_client.map.txt",
+        versions: ["1"],
+    },
+
+    host_supported: true,
+    compile_multilib: "both",
+}
diff --git a/adb/libs/adbconnection/adbconnection_client.cpp b/adb/libs/adbconnection/adbconnection_client.cpp
new file mode 100644
index 0000000..ee48abb
--- /dev/null
+++ b/adb/libs/adbconnection/adbconnection_client.cpp
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adbconnection/client.h"
+
+#include <pwd.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <memory>
+#include <optional>
+
+#include <android-base/cmsg.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+using android::base::unique_fd;
+
+static constexpr char kJdwpControlName[] = "\0jdwp-control";
+
+struct AdbConnectionClientContext {
+  unique_fd control_socket_;
+};
+
+bool SocketPeerIsTrusted(int fd) {
+  ucred cr;
+  socklen_t cr_length = sizeof(cr);
+  if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_length) != 0) {
+    PLOG(ERROR) << "couldn't get socket credentials";
+    return false;
+  }
+
+  passwd* shell = getpwnam("shell");
+  if (cr.uid != 0 && cr.uid != shell->pw_uid) {
+    LOG(ERROR) << "untrusted uid " << cr.uid << " on other end of socket";
+    return false;
+  }
+
+  return true;
+}
+
+AdbConnectionClientContext* adbconnection_client_new(
+    const AdbConnectionClientInfo* const* info_elems, size_t info_count) {
+  auto ctx = std::make_unique<AdbConnectionClientContext>();
+
+  std::optional<uint64_t> pid;
+  std::optional<bool> debuggable;
+
+  for (size_t i = 0; i < info_count; ++i) {
+    auto info = info_elems[i];
+    switch (info->type) {
+      case AdbConnectionClientInfoType::pid:
+        if (pid) {
+          LOG(ERROR) << "multiple pid entries in AdbConnectionClientInfo, ignoring";
+          continue;
+        }
+        pid = info->data.pid;
+        break;
+
+      case AdbConnectionClientInfoType::debuggable:
+        if (debuggable) {
+          LOG(ERROR) << "multiple debuggable entries in AdbConnectionClientInfo, ignoring";
+          continue;
+        }
+        debuggable = info->data.pid;
+        break;
+    }
+  }
+
+  if (!pid) {
+    LOG(ERROR) << "AdbConnectionClientInfo missing required field pid";
+    return nullptr;
+  }
+
+  if (!debuggable) {
+    LOG(ERROR) << "AdbConnectionClientInfo missing required field debuggable";
+    return nullptr;
+  }
+
+  ctx->control_socket_.reset(socket(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC, 0));
+  if (ctx->control_socket_ < 0) {
+    PLOG(ERROR) << "failed to create Unix domain socket";
+    return nullptr;
+  }
+
+  struct timeval timeout;
+  timeout.tv_sec = 1;
+  timeout.tv_usec = 0;
+  setsockopt(ctx->control_socket_.get(), SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
+
+  sockaddr_un addr = {};
+  addr.sun_family = AF_UNIX;
+  memcpy(addr.sun_path, kJdwpControlName, sizeof(kJdwpControlName));
+  size_t addr_len = offsetof(sockaddr_un, sun_path) + sizeof(kJdwpControlName) - 1;
+
+  int rc = connect(ctx->control_socket_.get(), reinterpret_cast<sockaddr*>(&addr), addr_len);
+  if (rc != 0) {
+    PLOG(ERROR) << "failed to connect to jdwp control socket";
+    return nullptr;
+  }
+
+  bool trusted = SocketPeerIsTrusted(ctx->control_socket_.get());
+  if (!trusted) {
+    LOG(ERROR) << "adb socket is not trusted, aborting connection";
+    return nullptr;
+  }
+
+  uint32_t pid_u32 = static_cast<uint32_t>(*pid);
+  rc = TEMP_FAILURE_RETRY(write(ctx->control_socket_.get(), &pid_u32, sizeof(pid_u32)));
+  if (rc != sizeof(pid_u32)) {
+    PLOG(ERROR) << "failed to send JDWP process pid to adbd";
+  }
+
+  return ctx.release();
+}
+
+void adbconnection_client_destroy(AdbConnectionClientContext* ctx) {
+  delete ctx;
+}
+
+int adbconnection_client_pollfd(AdbConnectionClientContext* ctx) {
+  return ctx->control_socket_.get();
+}
+
+int adbconnection_client_receive_jdwp_fd(AdbConnectionClientContext* ctx) {
+  char dummy;
+  unique_fd jdwp_fd;
+  ssize_t rc = android::base::ReceiveFileDescriptors(ctx->control_socket_, &dummy, 1, &jdwp_fd);
+  if (rc != 1) {
+    return rc;
+  }
+  return jdwp_fd.release();
+}
diff --git a/adb/libs/adbconnection/adbconnection_server.cpp b/adb/libs/adbconnection/adbconnection_server.cpp
new file mode 100644
index 0000000..939da2f
--- /dev/null
+++ b/adb/libs/adbconnection/adbconnection_server.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adbconnection/server.h"
+
+#include <sys/epoll.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <array>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+using android::base::unique_fd;
+
+#define JDWP_CONTROL_NAME "\0jdwp-control"
+#define JDWP_CONTROL_NAME_LEN (sizeof(JDWP_CONTROL_NAME) - 1)
+
+static_assert(JDWP_CONTROL_NAME_LEN <= sizeof(reinterpret_cast<sockaddr_un*>(0)->sun_path));
+
+// Listen for incoming jdwp clients forever.
+void adbconnection_listen(void (*callback)(int fd, pid_t pid)) {
+  sockaddr_un addr = {};
+  socklen_t addrlen = JDWP_CONTROL_NAME_LEN + sizeof(addr.sun_family);
+
+  addr.sun_family = AF_UNIX;
+  memcpy(addr.sun_path, JDWP_CONTROL_NAME, JDWP_CONTROL_NAME_LEN);
+
+  unique_fd s(socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0));
+  if (s < 0) {
+    PLOG(ERROR) << "failed to create JDWP control socket";
+    return;
+  }
+
+  if (bind(s.get(), reinterpret_cast<sockaddr*>(&addr), addrlen) < 0) {
+    PLOG(ERROR) << "failed to bind JDWP control socket";
+    return;
+  }
+
+  if (listen(s.get(), 4) < 0) {
+    PLOG(ERROR) << "failed to listen on JDWP control socket";
+    return;
+  }
+
+  std::vector<unique_fd> pending_connections;
+
+  unique_fd epfd(epoll_create1(EPOLL_CLOEXEC));
+  std::array<epoll_event, 16> events;
+
+  events[0].events = EPOLLIN;
+  events[0].data.fd = -1;
+  if (epoll_ctl(epfd.get(), EPOLL_CTL_ADD, s.get(), &events[0]) != 0) {
+    LOG(FATAL) << "failed to register event with epoll fd";
+  }
+
+  while (true) {
+    int epoll_rc = TEMP_FAILURE_RETRY(epoll_wait(epfd.get(), events.data(), events.size(), -1));
+    if (epoll_rc == -1) {
+      PLOG(FATAL) << "epoll_wait failed";
+    }
+
+    for (int i = 0; i < epoll_rc; ++i) {
+      const epoll_event& event = events[i];
+      if (event.data.fd == -1) {
+        unique_fd client(
+            TEMP_FAILURE_RETRY(accept4(s.get(), nullptr, nullptr, SOCK_NONBLOCK | SOCK_CLOEXEC)));
+
+        if (client == -1) {
+          PLOG(WARNING) << "failed to accept client on JDWP control socket";
+          continue;
+        }
+
+        epoll_event register_event;
+        register_event.events = EPOLLIN;
+        register_event.data.fd = client.get();
+
+        if (epoll_ctl(epfd.get(), EPOLL_CTL_ADD, client.get(), &register_event) != 0) {
+          PLOG(FATAL) << "failed to register JDWP client with epoll";
+        }
+
+        pending_connections.emplace_back(std::move(client));
+      } else {
+        // n^2, but the backlog should be short.
+        auto it = std::find_if(pending_connections.begin(), pending_connections.end(),
+                               [&](const unique_fd& fd) { return fd.get() == event.data.fd; });
+
+        if (it == pending_connections.end()) {
+          LOG(FATAL) << "failed to find JDWP client (" << event.data.fd
+                     << ") in pending connections";
+        }
+
+        // Massively oversized buffer: we're expecting an int32_t from the other end.
+        char buf[32];
+        int rc = TEMP_FAILURE_RETRY(recv(it->get(), buf, sizeof(buf), MSG_DONTWAIT));
+        if (rc != 4) {
+          LOG(ERROR) << "received data of incorrect size from JDWP client: read " << rc
+                     << ", expected 4";
+        } else {
+          int32_t pid;
+          memcpy(&pid, buf, sizeof(pid));
+          callback(it->release(), static_cast<pid_t>(pid));
+        }
+
+        if (epoll_ctl(epfd.get(), EPOLL_CTL_DEL, event.data.fd, nullptr) != 0) {
+          LOG(FATAL) << "failed to delete fd from JDWP epoll fd";
+        }
+
+        pending_connections.erase(it);
+      }
+    }
+  }
+}
diff --git a/adb/libs/adbconnection/include/adbconnection/client.h b/adb/libs/adbconnection/include/adbconnection/client.h
new file mode 100644
index 0000000..692fea0
--- /dev/null
+++ b/adb/libs/adbconnection/include/adbconnection/client.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <android-base/unique_fd.h>
+
+extern "C" {
+
+struct AdbConnectionClientContext;
+
+enum AdbConnectionClientInfoType {
+  pid,
+  debuggable,
+};
+
+struct AdbConnectionClientInfo {
+  AdbConnectionClientInfoType type;
+  union {
+    uint64_t pid;
+    bool debuggable;
+  } data;
+};
+
+// Construct a context and connect to adbd.
+// Returns null if we fail to connect to adbd.
+AdbConnectionClientContext* adbconnection_client_new(
+    const AdbConnectionClientInfo* const* info_elems, size_t info_count);
+
+void adbconnection_client_destroy(AdbConnectionClientContext* ctx);
+
+// Get an fd which can be polled upon to detect when a jdwp socket is available.
+// You do not own this fd. Do not close it.
+int adbconnection_client_pollfd(AdbConnectionClientContext* ctx);
+
+// Receive a jdwp client fd.
+// Ownership is transferred to the caller of this function.
+int adbconnection_client_receive_jdwp_fd(AdbConnectionClientContext* ctx);
+}
diff --git a/adb/libs/adbconnection/include/adbconnection/server.h b/adb/libs/adbconnection/include/adbconnection/server.h
new file mode 100644
index 0000000..57ca6cd
--- /dev/null
+++ b/adb/libs/adbconnection/include/adbconnection/server.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/types.h>
+
+#include <android-base/unique_fd.h>
+
+extern "C" {
+
+void adbconnection_listen(void (*callback)(int fd, pid_t pid));
+}
diff --git a/adb/libs/adbconnection/libadbconnection_client.map.txt b/adb/libs/adbconnection/libadbconnection_client.map.txt
new file mode 100644
index 0000000..153a0e4
--- /dev/null
+++ b/adb/libs/adbconnection/libadbconnection_client.map.txt
@@ -0,0 +1,25 @@
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LIBADBCONNECTION_CLIENT_1 {
+  global:
+    adbconnection_client_new;
+    adbconnection_client_destroy;
+    adbconnection_client_pollfd;
+    adbconnection_client_receive_jdwp_fd;
+  local:
+    *;
+};
diff --git a/adb/libs/libadbd_fs/Android.bp b/adb/libs/libadbd_fs/Android.bp
new file mode 100644
index 0000000..d178148
--- /dev/null
+++ b/adb/libs/libadbd_fs/Android.bp
@@ -0,0 +1,30 @@
+// libadbd_fs
+// =========================================================
+cc_library {
+    name: "libadbd_fs",
+    defaults: ["adbd_defaults"],
+
+    srcs: ["adbd_fs.cpp"],
+    static_libs: [
+        "libbase",
+        "libcutils",
+        "liblog",
+    ],
+    export_include_dirs: ["include"],
+
+    version_script: "libadbd_fs.map.txt",
+    stubs: {
+        versions: ["1"],
+        symbol_file: "libadbd_fs.map.txt",
+    },
+
+    host_supported: true,
+    recovery_available: true,
+    compile_multilib: "both",
+
+    target: {
+        darwin: {
+            enabled: false,
+        }
+    },
+}
diff --git a/adb/libs/libadbd_fs/adbd_fs.cpp b/adb/libs/libadbd_fs/adbd_fs.cpp
new file mode 100644
index 0000000..8e62d40
--- /dev/null
+++ b/adb/libs/libadbd_fs/adbd_fs.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <adbd_fs.h>
+
+#include <private/fs_config.h>
+
+void adbd_fs_config(const char* path, int dir, const char* target_out_path, uid_t* uid, gid_t* gid,
+                    mode_t* mode, uint64_t* capabilities) {
+  unsigned uid_hack;
+  unsigned gid_hack;
+  unsigned mode_hack;
+  fs_config(path, dir, target_out_path, &uid_hack, &gid_hack, &mode_hack, capabilities);
+  *uid = uid_hack;
+  *gid = gid_hack;
+  *mode = mode_hack;
+}
diff --git a/adb/libs/libadbd_fs/include/adbd_fs.h b/adb/libs/libadbd_fs/include/adbd_fs.h
new file mode 100644
index 0000000..6158d72
--- /dev/null
+++ b/adb/libs/libadbd_fs/include/adbd_fs.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <sys/types.h>
+
+extern "C" {
+// Thin wrapper around libcutils fs_config.
+void adbd_fs_config(const char* path, int dir, const char* target_out_path, uid_t* uid, gid_t* gid,
+                    mode_t* mode, uint64_t* capabilities);
+}
diff --git a/adb/libs/libadbd_fs/libadbd_fs.map.txt b/adb/libs/libadbd_fs/libadbd_fs.map.txt
new file mode 100644
index 0000000..1454e96
--- /dev/null
+++ b/adb/libs/libadbd_fs/libadbd_fs.map.txt
@@ -0,0 +1,6 @@
+LIBADBD_FS {
+  global:
+    adbd_fs_config; # apex
+  local:
+    *;
+};
diff --git a/adb/mdns_test.cpp b/adb/mdns_test.cpp
new file mode 100644
index 0000000..1f662c1
--- /dev/null
+++ b/adb/mdns_test.cpp
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include "adb_mdns.h"
+
+static bool isValidMdnsServiceName(std::string_view name) {
+    // The rules for Service Names [RFC6335] state that they may be no more
+    // than fifteen characters long (not counting the mandatory underscore),
+    // consisting of only letters, digits, and hyphens, must begin and end
+    // with a letter or digit, must not contain consecutive hyphens, and
+    // must contain at least one letter.
+
+    // No more than 15 characters long
+    if (name.empty() || name.size() > 15) {
+        return false;
+    }
+
+    bool hasAtLeastOneLetter = false;
+    bool sawHyphen = false;
+    for (size_t i = 0; i < name.size(); ++i) {
+        // Must contain at least one letter
+        // Only contains letters, digits and hyphens
+        if (name[i] == '-') {
+            // Cannot be at beginning or end
+            if (i == 0 || i == name.size() - 1) {
+                return false;
+            }
+            if (sawHyphen) {
+                // Consecutive hyphen found
+                return false;
+            }
+            sawHyphen = true;
+            continue;
+        }
+
+        sawHyphen = false;
+        if ((name[i] >= 'a' && name[i] <= 'z') || (name[i] >= 'A' && name[i] <= 'Z')) {
+            hasAtLeastOneLetter = true;
+            continue;
+        }
+
+        if (name[i] >= '0' && name[i] <= '9') {
+            continue;
+        }
+
+        // Invalid character
+        return false;
+    }
+
+    return hasAtLeastOneLetter;
+}
+
+TEST(mdns, test_isValidMdnsServiceName) {
+    // Longer than 15 characters
+    EXPECT_FALSE(isValidMdnsServiceName("abcd1234abcd1234"));
+
+    // Contains invalid characters
+    EXPECT_FALSE(isValidMdnsServiceName("a*a"));
+    EXPECT_FALSE(isValidMdnsServiceName("a_a"));
+    EXPECT_FALSE(isValidMdnsServiceName("_a"));
+
+    // Does not begin or end with letter or digit
+    EXPECT_FALSE(isValidMdnsServiceName(""));
+    EXPECT_FALSE(isValidMdnsServiceName("-"));
+    EXPECT_FALSE(isValidMdnsServiceName("-a"));
+    EXPECT_FALSE(isValidMdnsServiceName("-1"));
+    EXPECT_FALSE(isValidMdnsServiceName("a-"));
+    EXPECT_FALSE(isValidMdnsServiceName("1-"));
+
+    // Contains consecutive hyphens
+    EXPECT_FALSE(isValidMdnsServiceName("a--a"));
+
+    // Does not contain at least one letter
+    EXPECT_FALSE(isValidMdnsServiceName("1"));
+    EXPECT_FALSE(isValidMdnsServiceName("12"));
+    EXPECT_FALSE(isValidMdnsServiceName("1-2"));
+
+    // Some valid names
+    EXPECT_TRUE(isValidMdnsServiceName("a"));
+    EXPECT_TRUE(isValidMdnsServiceName("a1"));
+    EXPECT_TRUE(isValidMdnsServiceName("1A"));
+    EXPECT_TRUE(isValidMdnsServiceName("aZ"));
+    EXPECT_TRUE(isValidMdnsServiceName("a-Z"));
+    EXPECT_TRUE(isValidMdnsServiceName("a-b-Z"));
+    EXPECT_TRUE(isValidMdnsServiceName("abc-def-123-456"));
+}
+
+TEST(mdns, ServiceName_RFC6335) {
+    EXPECT_TRUE(isValidMdnsServiceName(ADB_MDNS_SERVICE_TYPE));
+    EXPECT_TRUE(isValidMdnsServiceName(ADB_MDNS_TLS_PAIRING_TYPE));
+    EXPECT_TRUE(isValidMdnsServiceName(ADB_MDNS_TLS_CONNECT_TYPE));
+}
diff --git a/adb/pairing_auth/Android.bp b/adb/pairing_auth/Android.bp
new file mode 100644
index 0000000..a43f4d0
--- /dev/null
+++ b/adb/pairing_auth/Android.bp
@@ -0,0 +1,83 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_defaults {
+    name: "libadb_pairing_auth_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    srcs: [
+        "aes_128_gcm.cpp",
+        "pairing_auth.cpp",
+    ],
+    target: {
+        android: {
+            version_script: "libadb_pairing_auth.map.txt",
+        },
+        windows: {
+            compile_multilib: "first",
+            enabled: true,
+        },
+    },
+    export_include_dirs: ["include"],
+
+    visibility: [
+        "//art:__subpackages__",
+        "//system/core/adb:__subpackages__",
+    ],
+
+    // libadb_pairing_auth doesn't need an embedded build number.
+    use_version_lib: false,
+
+    host_supported: true,
+    recovery_available: false,
+
+    stl: "libc++_static",
+
+    static_libs: ["libbase"],
+    shared_libs: [
+        "libcrypto",
+        "liblog",
+    ],
+}
+
+cc_library {
+    name: "libadb_pairing_auth",
+    defaults: ["libadb_pairing_auth_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+    ],
+
+    stubs: {
+        symbol_file: "libadb_pairing_auth.map.txt",
+        versions: ["30"],
+    },
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_pairing_auth_static",
+    defaults: ["libadb_pairing_auth_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+}
diff --git a/adb/pairing_auth/aes_128_gcm.cpp b/adb/pairing_auth/aes_128_gcm.cpp
new file mode 100644
index 0000000..51520d8
--- /dev/null
+++ b/adb/pairing_auth/aes_128_gcm.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/pairing/aes_128_gcm.h"
+
+#include <android-base/endian.h>
+#include <android-base/logging.h>
+
+#include <openssl/evp.h>
+#include <openssl/hkdf.h>
+#include <openssl/rand.h>
+
+namespace adb {
+namespace pairing {
+
+namespace {
+// Size of AES-128-GCM key, in bytes
+static constexpr size_t kHkdfKeyLength = 16;
+
+}  // namespace
+
+Aes128Gcm::Aes128Gcm(const uint8_t* key_material, size_t key_material_len) {
+    CHECK(key_material);
+    CHECK_NE(key_material_len, 0ul);
+
+    uint8_t key[kHkdfKeyLength];
+    uint8_t info[] = "adb pairing_auth aes-128-gcm key";
+    CHECK_EQ(HKDF(key, sizeof(key), EVP_sha256(), key_material, key_material_len, nullptr, 0, info,
+                  sizeof(info) - 1),
+             1);
+    CHECK(EVP_AEAD_CTX_init(context_.get(), EVP_aead_aes_128_gcm(), key, sizeof(key),
+                            EVP_AEAD_DEFAULT_TAG_LENGTH, nullptr));
+}
+
+std::optional<size_t> Aes128Gcm::Encrypt(const uint8_t* in, size_t in_len, uint8_t* out,
+                                         size_t out_len) {
+    std::vector<uint8_t> nonce(EVP_AEAD_nonce_length(EVP_AEAD_CTX_aead(context_.get())), 0);
+    memcpy(nonce.data(), &enc_sequence_, sizeof(enc_sequence_));
+    size_t written_sz;
+    if (!EVP_AEAD_CTX_seal(context_.get(), out, &written_sz, out_len, nonce.data(), nonce.size(),
+                           in, in_len, nullptr, 0)) {
+        LOG(ERROR) << "Failed to encrypt (in_len=" << in_len << ", out_len=" << out_len
+                   << ", out_len_needed=" << EncryptedSize(in_len) << ")";
+        return std::nullopt;
+    }
+
+    ++enc_sequence_;
+    return written_sz;
+}
+
+std::optional<size_t> Aes128Gcm::Decrypt(const uint8_t* in, size_t in_len, uint8_t* out,
+                                         size_t out_len) {
+    std::vector<uint8_t> nonce(EVP_AEAD_nonce_length(EVP_AEAD_CTX_aead(context_.get())), 0);
+    memcpy(nonce.data(), &dec_sequence_, sizeof(dec_sequence_));
+    size_t written_sz;
+    if (!EVP_AEAD_CTX_open(context_.get(), out, &written_sz, out_len, nonce.data(), nonce.size(),
+                           in, in_len, nullptr, 0)) {
+        LOG(ERROR) << "Failed to decrypt (in_len=" << in_len << ", out_len=" << out_len
+                   << ", out_len_needed=" << DecryptedSize(in_len) << ")";
+        return std::nullopt;
+    }
+
+    ++dec_sequence_;
+    return written_sz;
+}
+
+size_t Aes128Gcm::EncryptedSize(size_t size) {
+    // https://commondatastorage.googleapis.com/chromium-boringssl-docs/aead.h.html#EVP_AEAD_CTX_seal
+    return size + EVP_AEAD_max_overhead(EVP_AEAD_CTX_aead(context_.get()));
+}
+
+size_t Aes128Gcm::DecryptedSize(size_t size) {
+    // https://commondatastorage.googleapis.com/chromium-boringssl-docs/aead.h.html#EVP_AEAD_CTX_open
+    return size;
+}
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_auth/include/adb/pairing/aes_128_gcm.h b/adb/pairing_auth/include/adb/pairing/aes_128_gcm.h
new file mode 100644
index 0000000..6be5856
--- /dev/null
+++ b/adb/pairing_auth/include/adb/pairing/aes_128_gcm.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <optional>
+#include <vector>
+
+#include <openssl/aead.h>
+
+namespace adb {
+namespace pairing {
+
+class Aes128Gcm {
+  public:
+    explicit Aes128Gcm(const uint8_t* key_material, size_t key_material_len);
+
+    // Encrypt a block of data in |in| of length |in_len|, this consumes all data
+    // in |in| and places the encrypted data in |out| if |out_len| indicates that
+    // there is enough space. The data contains information needed for
+    // decryption that is specific to this implementation and is therefore only
+    // suitable for decryption with this class.
+    // The method returns the number of bytes placed in |out| on success and a
+    // negative value if an error occurs.
+    std::optional<size_t> Encrypt(const uint8_t* in, size_t in_len, uint8_t* out, size_t out_len);
+    // Decrypt a block of data in |in| of length |in_len|, this consumes all data
+    // in |in_len| bytes of data. The decrypted output is placed in the |out|
+    // buffer of length |out_len|. On successful decryption the number of bytes in
+    // |out| will be placed in |out_len|.
+    // The method returns the number of bytes consumed from the |in| buffer. If
+    // there is not enough data available in |in| the method returns zero. If
+    // an error occurs the method returns a negative value.
+    std::optional<size_t> Decrypt(const uint8_t* in, size_t in_len, uint8_t* out, size_t out_len);
+
+    // Return a safe amount of buffer storage needed to encrypt |size| bytes.
+    size_t EncryptedSize(size_t size);
+    // Return a safe amount of buffer storage needed to decrypt |size| bytes.
+    size_t DecryptedSize(size_t size);
+
+  private:
+    bssl::ScopedEVP_AEAD_CTX context_;
+    // Sequence numbers to use as nonces in the encryption scheme
+    uint64_t dec_sequence_ = 0;
+    uint64_t enc_sequence_ = 0;
+};
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_auth/include/adb/pairing/pairing_auth.h b/adb/pairing_auth/include/adb/pairing/pairing_auth.h
new file mode 100644
index 0000000..9ef97e2
--- /dev/null
+++ b/adb/pairing_auth/include/adb/pairing/pairing_auth.h
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+#if !defined(__INTRODUCED_IN)
+#define __INTRODUCED_IN(__api_level) /* nothing */
+#endif
+
+__BEGIN_DECLS
+#if !defined(__ANDROID__) || __ANDROID_API__ >= 30
+
+/**
+ * PairingAuthCtx is a wrapper around the SPAKE2 protocol + cipher initialization
+ * for encryption. On construction, the |password| will be used to generate a
+ * SPAKE2 message. Each peer will exchange the messages in |pairing_auth_get_msg|
+ * to initialize their ciphers in |pairing_auth_init_cipher|. If both peers used the
+ * same |password|, then both sides will be able to decrypt each other's messages.
+ *
+ * On creation of a PairingAuthCtx, |pairing_auth_init_cipher| prior to using
+ * the encrypt and decrypt APIs. Furthermore, you can only initialize the cipher
+ * once.
+ *
+ * See pairing_auth_test.cpp for example usage.
+ *
+ */
+struct PairingAuthCtx;
+typedef struct PairingAuthCtx PairingAuthCtx;
+
+/**
+ * Creates a new PairingAuthCtx instance as the server.
+ *
+ * @param pswd the shared secret the server and client use to authenticate each
+ *             other. Will abort if null.
+ * @param len the length of the pswd in bytes. Will abort if 0.
+ * @return a new PairingAuthCtx server instance. Caller is responsible for
+ *         destroying the context via #pairing_auth_destroy.
+ */
+PairingAuthCtx* pairing_auth_server_new(const uint8_t* pswd, size_t len) __INTRODUCED_IN(30);
+
+/**
+ * Creates a new PairingAuthCtx instance as the client.
+ *
+ * @param pswd the shared secret the server and client use to authenticate each
+ *             other. Will abort if null.
+ * @param len the length of the pswd in bytes. Will abort if 0.
+ * @return a new PairingAuthCtx client instance. Caller is responsible for
+ *         destroying the context via #pairing_auth_destroy.
+ */
+PairingAuthCtx* pairing_auth_client_new(const uint8_t* pswd, size_t len) __INTRODUCED_IN(30);
+
+/**
+ * Destroys the PairingAuthCtx.
+ *
+ * @param ctx the PairingAuthCtx instance to destroy. Will abort if null.
+ */
+void pairing_auth_destroy(PairingAuthCtx* ctx) __INTRODUCED_IN(30);
+
+/**
+ * Returns the exact size of the SPAKE2 msg.
+ *
+ * Use this size as the buffer size when retrieving the message via
+ * #pairing_auth_get_msg.
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @return the size of the SPAKE2 message in bytes. This is guaranteed to be > 0.
+ */
+size_t pairing_auth_msg_size(PairingAuthCtx* ctx) __INTRODUCED_IN(30);
+
+/**
+ * Writes the SPAKE2 message to exchange with the other party to |out_buf|.
+ *
+ * This is guaranteed to write a valid message to |out_buf|. Use #pairing_auth_msg_size
+ * to get the size the |out_buf| should be. The SPAKE2 messages will be used to
+ * initialize the cipher for encryption/decryption (see #pairing_auth_init_cipher).
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @param out_buf the buffer the message is written to. The buffer is assumed to
+ *                be have at least #pairing_auth_msg_size size. Will abort if
+ *                out_buf is null.
+ */
+void pairing_auth_get_spake2_msg(PairingAuthCtx* ctx, uint8_t* out_buf) __INTRODUCED_IN(30);
+
+/**
+ * Processes the peer's |their_msg| and attempts to initialize the cipher for
+ * encryption.
+ *
+ * You can only call this method ONCE with a non-empty |msg|, regardless of success
+ * or failure. On success, you can use the #pairing_auth_decrypt and #pairing_auth_encrypt
+ * methods to exchange any further information securely. On failure, this
+ * PairingAuthCtx instance has no more purpose and should be destroyed.
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @param their_msg the peer's SPAKE2 msg. See #pairing_auth_get_msg. Will abort
+ *        if null.
+ * @param msg_len the length of their_msg in bytes. Will abort if 0.
+ * @return true iff the client and server used the same password when creating
+ *         the PairingAuthCtx. See
+ *         https: *commondatastorage.googleapis.com/chromium-boringssl-docs/curve25519.h.html#SPAKE2
+ *         for more details on the SPAKE2 protocol.
+ */
+bool pairing_auth_init_cipher(PairingAuthCtx* ctx, const uint8_t* their_msg, size_t msg_len)
+        __INTRODUCED_IN(30);
+
+/**
+ * Returns a safe buffer size for encrypting data of a certain size.
+ *
+ * IMPORTANT: This will abort if either #pairing_auth_init_cipher was not called
+ * or #pairing_auth_init_cipher failed.
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @param len the size of the message wanting to encrypt in bytes.
+ * @return the minimum buffer size, in bytes, to hold an encrypted message of size len. See
+ * #pairing_auth_encrypt for usage.
+ */
+size_t pairing_auth_safe_encrypted_size(PairingAuthCtx* ctx, size_t len) __INTRODUCED_IN(30);
+
+/**
+ * Encrypts input data and writes the encrypted data into a user-provided buffer.
+ *
+ * IMPORTANT: This will abort if either #pairing_auth_init_cipher was not called
+ * or #pairing_auth_init_cipher failed.
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @param inbuf the buffer containing the data to encrypt. Will abort if null.
+ * @param inlen the size of inbuf in bytes. Will abort if 0.
+ * @param outbuf the buffer to write the encrypted data to. Will abort if null
+ * @param outlen the size of outbuf in bytes. See #pairing_auth_safe_encrypted_size.
+ * @return true if all the data was encrypted and written to outbuf, false
+ *         otherwise.
+ */
+bool pairing_auth_encrypt(PairingAuthCtx* ctx, const uint8_t* inbuf, size_t inlen, uint8_t* outbuf,
+                          size_t* outlen) __INTRODUCED_IN(30);
+
+/**
+ * Returns a safe buffer size for decrypting data of a certain size.
+ *
+ * IMPORTANT: This will abort if either #pairing_auth_init_cipher was not called
+ * or #pairing_auth_init_cipher failed.
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @param buf the buffer containing the encrypted data. Will abort if null.
+ * @param len the size of the buf in bytes. Will abort if 0.
+ * @return the minimum buffer size, in bytes, to hold a decrypted message of size len. See
+ *         #pairing_auth_decrypt for usage.
+ */
+size_t pairing_auth_safe_decrypted_size(PairingAuthCtx* ctx, const uint8_t* buf, size_t len)
+        __INTRODUCED_IN(30);
+
+/**
+ * Decrypts input data and writes the decrypted data into a user-provided buffer.
+ *
+ * IMPORTANT: This will abort if either #pairing_auth_init_cipher was not called
+ * or #pairing_auth_init_cipher failed.
+ *
+ * @param ctx the PairingAuthCtx instance. Will abort if null.
+ * @param inbuf the buffer containing the data to decrypt. Will abort if null.
+ * @param inlen the size of inbuf in bytes. WIll abort if 0.
+ * @param outbuf the buffer to write the decrypted data to. Will abort if null.
+ * @param outlen the size of outbuf in bytes. See #pairing_auth_safe_decrypted_size.
+ *        Will abort if 0.
+ * @return true if all the data was decrypted and written to outbuf, false
+ *         otherwise.
+ */
+bool pairing_auth_decrypt(PairingAuthCtx* ctx, const uint8_t* inbuf, size_t inlen, uint8_t* outbuf,
+                          size_t* outlen) __INTRODUCED_IN(30);
+
+#endif  //!__ANDROID__ || __ANDROID_API__ >= 30
+__END_DECLS
diff --git a/adb/pairing_auth/libadb_pairing_auth.map.txt b/adb/pairing_auth/libadb_pairing_auth.map.txt
new file mode 100644
index 0000000..fdc1557
--- /dev/null
+++ b/adb/pairing_auth/libadb_pairing_auth.map.txt
@@ -0,0 +1,15 @@
+LIBADB_PAIRING_AUTH {
+  global:
+    pairing_auth_msg_size; # apex introduced=30
+    pairing_auth_get_spake2_msg; # apex introduced=30
+    pairing_auth_init_cipher; # apex introduced=30
+    pairing_auth_safe_encrypted_size; # apex introduced=30
+    pairing_auth_encrypt; # apex introduced=30
+    pairing_auth_safe_decrypted_size; # apex introduced=30
+    pairing_auth_decrypt; # apex introduced=30
+    pairing_auth_server_new; # apex introduced=30
+    pairing_auth_client_new; # apex introduced=30
+    pairing_auth_destroy; # apex introduced=30
+  local:
+    *;
+};
diff --git a/adb/pairing_auth/pairing_auth.cpp b/adb/pairing_auth/pairing_auth.cpp
new file mode 100644
index 0000000..0ac04e6
--- /dev/null
+++ b/adb/pairing_auth/pairing_auth.cpp
@@ -0,0 +1,300 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/pairing/pairing_auth.h"
+
+#include <android-base/logging.h>
+
+#include <openssl/curve25519.h>
+#include <openssl/mem.h>
+
+#include <iomanip>
+#include <sstream>
+#include <vector>
+
+#include "adb/pairing/aes_128_gcm.h"
+
+using namespace adb::pairing;
+
+static constexpr spake2_role_t kClientRole = spake2_role_alice;
+static constexpr spake2_role_t kServerRole = spake2_role_bob;
+
+static const uint8_t kClientName[] = "adb pair client";
+static const uint8_t kServerName[] = "adb pair server";
+
+// This class is basically a wrapper around the SPAKE2 protocol + initializing a
+// cipher with the generated key material for encryption.
+struct PairingAuthCtx {
+  public:
+    using Data = std::vector<uint8_t>;
+    enum class Role {
+        Client,
+        Server,
+    };
+
+    explicit PairingAuthCtx(Role role, const Data& pswd);
+
+    // Returns the message to exchange with the other party. This is guaranteed
+    // to have a non-empty message if creating this object with
+    // |PairingAuthCtx::Create|, so you won't need to check.
+    const Data& msg() const;
+
+    // Processes the peer's |msg| and attempts to initialize the cipher for
+    // encryption. You can only call this method ONCE with a non-empty |msg|,
+    // regardless of success or failure. Subsequent calls will always return
+    // false. On success, you can use the |decrypt|
+    // and |encrypt| methods to exchange any further information securely.
+    //
+    // Note: Once you call this with a non-empty key, the state is locked, which
+    // means that you cannot try and register another key, regardless of the
+    // return value. In order to register another key, you have to create a new
+    // instance of PairingAuthCtx.
+    bool InitCipher(const Data& their_msg);
+
+    // Encrypts |data| and returns the result. If encryption fails, the return
+    // will be an empty vector.
+    Data Encrypt(const Data& data);
+
+    // Decrypts |data| and returns the result. If decryption fails, the return
+    // will be an empty vector.
+    Data Decrypt(const Data& data);
+
+    // Returns a safe buffer size for encrypting a buffer of size |len|.
+    size_t SafeEncryptedSize(size_t len);
+
+    // Returns a safe buffer size for decrypting a buffer of size |len|.
+    size_t SafeDecryptedSize(size_t len);
+
+  private:
+    Data our_msg_;
+    Role role_;
+    bssl::UniquePtr<SPAKE2_CTX> spake2_ctx_;
+    std::unique_ptr<Aes128Gcm> cipher_;
+};  // PairingAuthCtx
+
+PairingAuthCtx::PairingAuthCtx(Role role, const Data& pswd) : role_(role) {
+    CHECK(!pswd.empty());
+    // Try to create the spake2 context and generate the public key.
+    spake2_role_t spake_role;
+    const uint8_t* my_name = nullptr;
+    const uint8_t* their_name = nullptr;
+    size_t my_len = 0;
+    size_t their_len = 0;
+
+    // Create the SPAKE2 context
+    switch (role_) {
+        case Role::Client:
+            spake_role = kClientRole;
+            my_name = kClientName;
+            my_len = sizeof(kClientName);
+            their_name = kServerName;
+            their_len = sizeof(kServerName);
+            break;
+        case Role::Server:
+            spake_role = kServerRole;
+            my_name = kServerName;
+            my_len = sizeof(kServerName);
+            their_name = kClientName;
+            their_len = sizeof(kClientName);
+            break;
+    }
+    spake2_ctx_.reset(SPAKE2_CTX_new(spake_role, my_name, my_len, their_name, their_len));
+    if (spake2_ctx_ == nullptr) {
+        LOG(ERROR) << "Unable to create a SPAKE2 context.";
+        return;
+    }
+
+    // Generate the SPAKE2 public key
+    size_t key_size = 0;
+    uint8_t key[SPAKE2_MAX_MSG_SIZE];
+    int status = SPAKE2_generate_msg(spake2_ctx_.get(), key, &key_size, SPAKE2_MAX_MSG_SIZE,
+                                     pswd.data(), pswd.size());
+    if (status != 1 || key_size == 0) {
+        LOG(ERROR) << "Unable to generate the SPAKE2 public key.";
+        return;
+    }
+    our_msg_.assign(key, key + key_size);
+}
+
+const PairingAuthCtx::Data& PairingAuthCtx::msg() const {
+    return our_msg_;
+}
+
+bool PairingAuthCtx::InitCipher(const PairingAuthCtx::Data& their_msg) {
+    // You can only register a key once.
+    CHECK(!their_msg.empty());
+    CHECK(!cipher_);
+
+    // Don't even try to process a message over the SPAKE2_MAX_MSG_SIZE
+    if (their_msg.size() > SPAKE2_MAX_MSG_SIZE) {
+        LOG(ERROR) << "their_msg size [" << their_msg.size() << "] greater then max size ["
+                   << SPAKE2_MAX_MSG_SIZE << "].";
+        return false;
+    }
+
+    size_t key_material_len = 0;
+    uint8_t key_material[SPAKE2_MAX_KEY_SIZE];
+    int status = SPAKE2_process_msg(spake2_ctx_.get(), key_material, &key_material_len,
+                                    sizeof(key_material), their_msg.data(), their_msg.size());
+    if (status != 1) {
+        LOG(ERROR) << "Unable to process their public key";
+        return false;
+    }
+
+    // Once SPAKE2_process_msg returns successfully, you can't do anything else
+    // with the context, besides destroy it.
+    cipher_.reset(new Aes128Gcm(key_material, key_material_len));
+
+    return true;
+}
+
+PairingAuthCtx::Data PairingAuthCtx::Encrypt(const PairingAuthCtx::Data& data) {
+    CHECK(cipher_);
+    CHECK(!data.empty());
+
+    // Determine the size for the encrypted data based on the raw data.
+    Data encrypted(cipher_->EncryptedSize(data.size()));
+    auto out_size = cipher_->Encrypt(data.data(), data.size(), encrypted.data(), encrypted.size());
+    if (!out_size.has_value() || *out_size == 0) {
+        LOG(ERROR) << "Unable to encrypt data";
+        return Data();
+    }
+    encrypted.resize(*out_size);
+
+    return encrypted;
+}
+
+PairingAuthCtx::Data PairingAuthCtx::Decrypt(const PairingAuthCtx::Data& data) {
+    CHECK(cipher_);
+    CHECK(!data.empty());
+
+    // Determine the size for the decrypted data based on the raw data.
+    Data decrypted(cipher_->DecryptedSize(data.size()));
+    size_t decrypted_size = decrypted.size();
+    auto out_size = cipher_->Decrypt(data.data(), data.size(), decrypted.data(), decrypted_size);
+    if (!out_size.has_value() || *out_size == 0) {
+        LOG(ERROR) << "Unable to decrypt data";
+        return Data();
+    }
+    decrypted.resize(*out_size);
+
+    return decrypted;
+}
+
+size_t PairingAuthCtx::SafeEncryptedSize(size_t len) {
+    CHECK(cipher_);
+    return cipher_->EncryptedSize(len);
+}
+
+size_t PairingAuthCtx::SafeDecryptedSize(size_t len) {
+    CHECK(cipher_);
+    return cipher_->DecryptedSize(len);
+}
+
+PairingAuthCtx* pairing_auth_server_new(const uint8_t* pswd, size_t len) {
+    CHECK(pswd);
+    CHECK_GT(len, 0U);
+    std::vector<uint8_t> p(pswd, pswd + len);
+    auto* ret = new PairingAuthCtx(PairingAuthCtx::Role::Server, std::move(p));
+    CHECK(!ret->msg().empty());
+    return ret;
+}
+
+PairingAuthCtx* pairing_auth_client_new(const uint8_t* pswd, size_t len) {
+    CHECK(pswd);
+    CHECK_GT(len, 0U);
+    std::vector<uint8_t> p(pswd, pswd + len);
+    auto* ret = new PairingAuthCtx(PairingAuthCtx::Role::Client, std::move(p));
+    CHECK(!ret->msg().empty());
+    return ret;
+}
+
+size_t pairing_auth_msg_size(PairingAuthCtx* ctx) {
+    CHECK(ctx);
+    return ctx->msg().size();
+}
+
+void pairing_auth_get_spake2_msg(PairingAuthCtx* ctx, uint8_t* out_buf) {
+    CHECK(ctx);
+    CHECK(out_buf);
+    auto& msg = ctx->msg();
+    memcpy(out_buf, msg.data(), msg.size());
+}
+
+bool pairing_auth_init_cipher(PairingAuthCtx* ctx, const uint8_t* their_msg, size_t msg_len) {
+    CHECK(ctx);
+    CHECK(their_msg);
+    CHECK_GT(msg_len, 0U);
+
+    std::vector<uint8_t> p(their_msg, their_msg + msg_len);
+    return ctx->InitCipher(p);
+}
+
+size_t pairing_auth_safe_encrypted_size(PairingAuthCtx* ctx, size_t len) {
+    CHECK(ctx);
+    return ctx->SafeEncryptedSize(len);
+}
+
+bool pairing_auth_encrypt(PairingAuthCtx* ctx, const uint8_t* inbuf, size_t inlen, uint8_t* outbuf,
+                          size_t* outlen) {
+    CHECK(ctx);
+    CHECK(inbuf);
+    CHECK(outbuf);
+    CHECK(outlen);
+    CHECK_GT(inlen, 0U);
+
+    std::vector<uint8_t> in(inbuf, inbuf + inlen);
+    auto out = ctx->Encrypt(in);
+    if (out.empty()) {
+        return false;
+    }
+
+    memcpy(outbuf, out.data(), out.size());
+    *outlen = out.size();
+    return true;
+}
+
+size_t pairing_auth_safe_decrypted_size(PairingAuthCtx* ctx, const uint8_t* buf, size_t len) {
+    CHECK(ctx);
+    CHECK(buf);
+    CHECK_GT(len, 0U);
+    // We no longer need buf for EVP_AEAD
+    return ctx->SafeDecryptedSize(len);
+}
+
+bool pairing_auth_decrypt(PairingAuthCtx* ctx, const uint8_t* inbuf, size_t inlen, uint8_t* outbuf,
+                          size_t* outlen) {
+    CHECK(ctx);
+    CHECK(inbuf);
+    CHECK(outbuf);
+    CHECK(outlen);
+    CHECK_GT(inlen, 0U);
+
+    std::vector<uint8_t> in(inbuf, inbuf + inlen);
+    auto out = ctx->Decrypt(in);
+    if (out.empty()) {
+        return false;
+    }
+
+    memcpy(outbuf, out.data(), out.size());
+    *outlen = out.size();
+    return true;
+}
+
+void pairing_auth_destroy(PairingAuthCtx* ctx) {
+    CHECK(ctx);
+    delete ctx;
+}
diff --git a/adb/pairing_auth/tests/Android.bp b/adb/pairing_auth/tests/Android.bp
new file mode 100644
index 0000000..213123d
--- /dev/null
+++ b/adb/pairing_auth/tests/Android.bp
@@ -0,0 +1,38 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "adb_pairing_auth_test",
+    srcs: [
+        "aes_128_gcm_test.cpp",
+        "pairing_auth_test.cpp",
+    ],
+
+    compile_multilib: "first",
+
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+    ],
+
+    // Let's statically link them so we don't have to install it onto the
+    // system image for testing.
+    static_libs: [
+        "libadb_pairing_auth_static",
+    ],
+
+    test_suites: ["device-tests"],
+}
diff --git a/adb/pairing_auth/tests/aes_128_gcm_test.cpp b/adb/pairing_auth/tests/aes_128_gcm_test.cpp
new file mode 100644
index 0000000..55689d6
--- /dev/null
+++ b/adb/pairing_auth/tests/aes_128_gcm_test.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <memory>
+
+#include <adb/pairing/aes_128_gcm.h>
+#include <openssl/rand.h>
+
+namespace adb {
+namespace pairing {
+
+TEST(Aes128GcmTest, init_null_material) {
+    std::unique_ptr<Aes128Gcm> cipher;
+    ASSERT_DEATH({ cipher.reset(new Aes128Gcm(nullptr, 42)); }, "");
+}
+
+TEST(Aes128GcmTest, init_empty_material) {
+    uint8_t material[64];
+    std::unique_ptr<Aes128Gcm> cipher;
+    ASSERT_DEATH({ cipher.reset(new Aes128Gcm(material, 0)); }, "");
+}
+
+TEST(Aes128GcmTest, encrypt_decrypt) {
+    const uint8_t msg[] = "alice and bob, sitting in a binary tree";
+    uint8_t material[256];
+    uint8_t encrypted[1024];
+    uint8_t out_buf[1024] = {};
+
+    RAND_bytes(material, sizeof(material));
+    Aes128Gcm alice(material, sizeof(material));
+    Aes128Gcm bob(material, sizeof(material));
+    ;
+
+    ASSERT_GE(alice.EncryptedSize(sizeof(msg)), sizeof(msg));
+    auto encrypted_size = alice.Encrypt(msg, sizeof(msg), encrypted, sizeof(encrypted));
+    ASSERT_TRUE(encrypted_size.has_value());
+    ASSERT_GT(*encrypted_size, 0);
+    size_t out_size = sizeof(out_buf);
+    ASSERT_GE(bob.DecryptedSize(*encrypted_size), sizeof(msg));
+    auto decrypted_size = bob.Decrypt(encrypted, *encrypted_size, out_buf, out_size);
+    ASSERT_TRUE(decrypted_size.has_value());
+    ASSERT_EQ(sizeof(msg), *decrypted_size);
+    ASSERT_STREQ(reinterpret_cast<const char*>(msg), reinterpret_cast<const char*>(out_buf));
+}
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_auth/tests/pairing_auth_test.cpp b/adb/pairing_auth/tests/pairing_auth_test.cpp
new file mode 100644
index 0000000..fdc07f1
--- /dev/null
+++ b/adb/pairing_auth/tests/pairing_auth_test.cpp
@@ -0,0 +1,330 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AdbPairingAuthTest"
+
+#include <gtest/gtest.h>
+
+#include <adb/pairing/pairing_auth.h>
+#include <android-base/endian.h>
+
+namespace adb {
+namespace pairing {
+
+static void PairingAuthDeleter(PairingAuthCtx* p) {
+    pairing_auth_destroy(p);
+}
+
+class AdbPairingAuthTest : public testing::Test {
+  protected:
+    virtual void SetUp() override {}
+
+    virtual void TearDown() override {}
+
+    using PairingAuthUniquePtr = std::unique_ptr<PairingAuthCtx, decltype(&PairingAuthDeleter)>;
+
+    PairingAuthUniquePtr makeClient(std::vector<uint8_t> pswd) {
+        return PairingAuthUniquePtr(pairing_auth_client_new(pswd.data(), pswd.size()),
+                                    PairingAuthDeleter);
+    }
+
+    PairingAuthUniquePtr makeServer(std::vector<uint8_t> pswd) {
+        return PairingAuthUniquePtr(pairing_auth_server_new(pswd.data(), pswd.size()),
+                                    PairingAuthDeleter);
+    }
+};
+
+TEST_F(AdbPairingAuthTest, EmptyPassword) {
+    // Context creation should fail if password is empty
+    PairingAuthUniquePtr client(nullptr, PairingAuthDeleter);
+    ASSERT_DEATH(
+            {
+                client = PairingAuthUniquePtr(pairing_auth_client_new(nullptr, 0),
+                                              PairingAuthDeleter);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                client = PairingAuthUniquePtr(pairing_auth_client_new(nullptr, 2),
+                                              PairingAuthDeleter);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                uint8_t p;
+                client = PairingAuthUniquePtr(pairing_auth_client_new(&p, 0), PairingAuthDeleter);
+            },
+            "");
+}
+
+TEST_F(AdbPairingAuthTest, ValidPassword) {
+    const char* kPswd = "password";
+    std::vector<uint8_t> pswd(kPswd, kPswd + sizeof(kPswd));
+    auto client = makeClient(pswd);
+    auto server = makeServer(pswd);
+
+    ASSERT_NE(nullptr, client);
+    ASSERT_NE(nullptr, server);
+
+    // msg should not be empty.
+    {
+        size_t msg_size = pairing_auth_msg_size(client.get());
+        std::vector<uint8_t> buf(msg_size);
+        ASSERT_GT(msg_size, 0);
+        pairing_auth_get_spake2_msg(client.get(), buf.data());
+    }
+    {
+        size_t msg_size = pairing_auth_msg_size(server.get());
+        std::vector<uint8_t> buf(msg_size);
+        ASSERT_GT(msg_size, 0);
+        pairing_auth_get_spake2_msg(server.get(), buf.data());
+    }
+}
+
+TEST_F(AdbPairingAuthTest, NoInitCipher) {
+    // Register a non-empty password, but not the peer's msg.
+    // You should not be able to encrypt/decrypt messages.
+    const char* kPswd = "password";
+    std::vector<uint8_t> pswd(kPswd, kPswd + sizeof(kPswd));
+    std::vector<uint8_t> data{0x01, 0x02, 0x03};
+    uint8_t outbuf[256];
+    size_t outsize;
+
+    // All other functions should crash if cipher hasn't been initialized.
+    ASSERT_DEATH(
+            {
+                auto server = makeServer(pswd);
+                pairing_auth_init_cipher(server.get(), nullptr, 0);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                auto server = makeServer(pswd);
+                pairing_auth_encrypt(server.get(), data.data(), data.size(), outbuf, &outsize);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                auto server = makeServer(pswd);
+                pairing_auth_decrypt(server.get(), data.data(), data.size(), outbuf, &outsize);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                auto server = makeServer(pswd);
+                pairing_auth_safe_decrypted_size(server.get(), data.data(), data.size());
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                auto server = makeServer(pswd);
+                pairing_auth_safe_encrypted_size(server.get(), data.size());
+            },
+            "");
+}
+
+TEST_F(AdbPairingAuthTest, DifferentPasswords) {
+    // Register different passwords and then exchange the msgs. The
+    // encryption should succeed, but the decryption should fail, since the
+    // ciphers have been initialized with different keys.
+    auto client = makeClient({0x01, 0x02, 0x03});
+    std::vector<uint8_t> client_msg(pairing_auth_msg_size(client.get()));
+    ASSERT_FALSE(client_msg.empty());
+    pairing_auth_get_spake2_msg(client.get(), client_msg.data());
+
+    auto server = makeServer({0x01, 0x02, 0x04});
+    std::vector<uint8_t> server_msg(pairing_auth_msg_size(server.get()));
+    ASSERT_FALSE(server_msg.empty());
+    pairing_auth_get_spake2_msg(server.get(), server_msg.data());
+
+    EXPECT_TRUE(pairing_auth_init_cipher(client.get(), server_msg.data(), server_msg.size()));
+    EXPECT_TRUE(pairing_auth_init_cipher(server.get(), client_msg.data(), client_msg.size()));
+
+    // We shouldn't be able to decrypt.
+    std::vector<uint8_t> msg{0x2a, 0x2b, 0x2c};
+    // Client encrypts, server can't decrypt
+    size_t out_size;
+    client_msg.resize(pairing_auth_safe_encrypted_size(client.get(), msg.size()));
+    ASSERT_GT(client_msg.size(), 0);
+    ASSERT_TRUE(pairing_auth_encrypt(client.get(), msg.data(), msg.size(), client_msg.data(),
+                                     &out_size));
+    ASSERT_GT(out_size, 0);
+    client_msg.resize(out_size);
+
+    server_msg.resize(
+            pairing_auth_safe_decrypted_size(server.get(), client_msg.data(), client_msg.size()));
+    ASSERT_GT(server_msg.size(), 0);
+    ASSERT_FALSE(pairing_auth_decrypt(server.get(), client_msg.data(), client_msg.size(),
+                                      server_msg.data(), &out_size));
+
+    // Server encrypts, client can't decrypt
+    server_msg.resize(pairing_auth_safe_encrypted_size(server.get(), msg.size()));
+    ASSERT_GT(server_msg.size(), 0);
+    ASSERT_TRUE(pairing_auth_encrypt(server.get(), msg.data(), msg.size(), server_msg.data(),
+                                     &out_size));
+    ASSERT_GT(out_size, 0);
+    server_msg.resize(out_size);
+
+    client_msg.resize(
+            pairing_auth_safe_decrypted_size(client.get(), server_msg.data(), server_msg.size()));
+    ASSERT_GT(client_msg.size(), 0);
+    ASSERT_FALSE(pairing_auth_decrypt(client.get(), server_msg.data(), server_msg.size(),
+                                      client_msg.data(), &out_size));
+}
+
+TEST_F(AdbPairingAuthTest, SamePasswords) {
+    // Register same password and then exchange the msgs. The
+    // encryption and decryption should succeed and have the same, unencrypted
+    // values.
+    std::vector<uint8_t> pswd{0x4f, 0x5a, 0x01, 0x46};
+    auto client = makeClient(pswd);
+    std::vector<uint8_t> client_msg(pairing_auth_msg_size(client.get()));
+    ASSERT_FALSE(client_msg.empty());
+    pairing_auth_get_spake2_msg(client.get(), client_msg.data());
+
+    auto server = makeServer(pswd);
+    std::vector<uint8_t> server_msg(pairing_auth_msg_size(server.get()));
+    ASSERT_FALSE(server_msg.empty());
+    pairing_auth_get_spake2_msg(server.get(), server_msg.data());
+
+    EXPECT_TRUE(pairing_auth_init_cipher(client.get(), server_msg.data(), server_msg.size()));
+    EXPECT_TRUE(pairing_auth_init_cipher(server.get(), client_msg.data(), client_msg.size()));
+
+    // We should be able to decrypt.
+    std::vector<uint8_t> msg{0x2a, 0x2b, 0x2c, 0xff, 0x45, 0x12, 0x33};
+    // Client encrypts, server decrypts
+    size_t out_size;
+    client_msg.resize(pairing_auth_safe_encrypted_size(client.get(), msg.size()));
+    ASSERT_GT(client_msg.size(), 0);
+    ASSERT_TRUE(pairing_auth_encrypt(client.get(), msg.data(), msg.size(), client_msg.data(),
+                                     &out_size));
+    ASSERT_GT(out_size, 0);
+    client_msg.resize(out_size);
+
+    server_msg.resize(
+            pairing_auth_safe_decrypted_size(server.get(), client_msg.data(), client_msg.size()));
+    ASSERT_GT(server_msg.size(), 0);
+    ASSERT_TRUE(pairing_auth_decrypt(server.get(), client_msg.data(), client_msg.size(),
+                                     server_msg.data(), &out_size));
+    ASSERT_EQ(out_size, msg.size());
+    EXPECT_EQ(memcmp(msg.data(), server_msg.data(), out_size), 0);
+
+    // Server encrypts, client decrypt
+    server_msg.resize(pairing_auth_safe_encrypted_size(server.get(), msg.size()));
+    ASSERT_GT(server_msg.size(), 0);
+    ASSERT_TRUE(pairing_auth_encrypt(server.get(), msg.data(), msg.size(), server_msg.data(),
+                                     &out_size));
+    ASSERT_GT(out_size, 0);
+    server_msg.resize(out_size);
+
+    client_msg.resize(
+            pairing_auth_safe_decrypted_size(client.get(), server_msg.data(), server_msg.size()));
+    ASSERT_GT(client_msg.size(), 0);
+    ASSERT_TRUE(pairing_auth_decrypt(client.get(), server_msg.data(), server_msg.size(),
+                                     client_msg.data(), &out_size));
+    ASSERT_EQ(out_size, msg.size());
+    EXPECT_EQ(memcmp(msg.data(), client_msg.data(), out_size), 0);
+}
+
+TEST_F(AdbPairingAuthTest, CorruptedPayload) {
+    // Do a matching password for both server/client, but let's fudge with the
+    // header payload field. The decryption should fail.
+    std::vector<uint8_t> pswd{0x4f, 0x5a, 0x01, 0x46};
+    auto client = makeClient(pswd);
+    std::vector<uint8_t> client_msg(pairing_auth_msg_size(client.get()));
+    ASSERT_FALSE(client_msg.empty());
+    pairing_auth_get_spake2_msg(client.get(), client_msg.data());
+
+    auto server = makeServer(pswd);
+    std::vector<uint8_t> server_msg(pairing_auth_msg_size(server.get()));
+    ASSERT_FALSE(server_msg.empty());
+    pairing_auth_get_spake2_msg(server.get(), server_msg.data());
+
+    EXPECT_TRUE(pairing_auth_init_cipher(client.get(), server_msg.data(), server_msg.size()));
+    EXPECT_TRUE(pairing_auth_init_cipher(server.get(), client_msg.data(), client_msg.size()));
+
+    std::vector<uint8_t> msg{0x2a, 0x2b, 0x2c, 0xff, 0x45, 0x12,
+                             0x33, 0x45, 0x12, 0xea, 0xf2, 0xdb};
+    {
+        // Client encrypts whole msg, server decrypts msg. Should be fine.
+        size_t out_size;
+        client_msg.resize(pairing_auth_safe_encrypted_size(client.get(), msg.size()));
+        ASSERT_GT(client_msg.size(), 0);
+        ASSERT_TRUE(pairing_auth_encrypt(client.get(), msg.data(), msg.size(), client_msg.data(),
+                                         &out_size));
+        ASSERT_GT(out_size, 0);
+        client_msg.resize(out_size);
+
+        server_msg.resize(pairing_auth_safe_decrypted_size(server.get(), client_msg.data(),
+                                                           client_msg.size()));
+        ASSERT_GT(server_msg.size(), 0);
+        ASSERT_TRUE(pairing_auth_decrypt(server.get(), client_msg.data(), client_msg.size(),
+                                         server_msg.data(), &out_size));
+        ASSERT_EQ(out_size, msg.size());
+        EXPECT_EQ(memcmp(msg.data(), server_msg.data(), out_size), 0);
+    }
+    {
+        // 1) Client encrypts msg
+        // 2) append some data to the encrypted msg
+        // 3) change the payload field
+        // 4) server tries to decrypt. It should fail.
+        size_t out_size;
+        client_msg.resize(pairing_auth_safe_encrypted_size(client.get(), msg.size()));
+        ASSERT_GT(client_msg.size(), 0);
+        ASSERT_TRUE(pairing_auth_encrypt(client.get(), msg.data(), msg.size(), client_msg.data(),
+                                         &out_size));
+        ASSERT_GT(out_size, 0);
+        client_msg.resize(out_size);
+        client_msg.push_back(0xaa);
+        // This requires knowledge of the layout of the data. payload is the
+        // first four bytes of the client_msg.
+        uint32_t* payload = reinterpret_cast<uint32_t*>(client_msg.data());
+        *payload = ntohl(*payload);
+        *payload = htonl(*payload + 1);
+
+        server_msg.resize(pairing_auth_safe_decrypted_size(server.get(), client_msg.data(),
+                                                           client_msg.size()));
+        ASSERT_GT(server_msg.size(), 0);
+        ASSERT_FALSE(pairing_auth_decrypt(server.get(), client_msg.data(), client_msg.size(),
+                                          server_msg.data(), &out_size));
+    }
+    {
+        // 1) Client encrypts msg
+        // 3) decrement the payload field
+        // 4) server tries to decrypt. It should fail.
+        size_t out_size;
+        client_msg.resize(pairing_auth_safe_encrypted_size(client.get(), msg.size()));
+        ASSERT_GT(client_msg.size(), 0);
+        ASSERT_TRUE(pairing_auth_encrypt(client.get(), msg.data(), msg.size(), client_msg.data(),
+                                         &out_size));
+        ASSERT_GT(out_size, 0);
+        client_msg.resize(out_size);
+        // This requires knowledge of the layout of the data. payload is the
+        // first four bytes of the client_msg.
+        uint32_t* payload = reinterpret_cast<uint32_t*>(client_msg.data());
+        *payload = ntohl(*payload);
+        *payload = htonl(*payload - 1);
+
+        server_msg.resize(pairing_auth_safe_decrypted_size(server.get(), client_msg.data(),
+                                                           client_msg.size()));
+        ASSERT_GT(server_msg.size(), 0);
+        ASSERT_FALSE(pairing_auth_decrypt(server.get(), client_msg.data(), client_msg.size(),
+                                          server_msg.data(), &out_size));
+    }
+}
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_connection/Android.bp b/adb/pairing_connection/Android.bp
new file mode 100644
index 0000000..707161b
--- /dev/null
+++ b/adb/pairing_connection/Android.bp
@@ -0,0 +1,188 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_defaults {
+    name: "libadb_pairing_connection_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    srcs: [
+        "pairing_connection.cpp",
+    ],
+    target: {
+        android: {
+            version_script: "libadb_pairing_connection.map.txt",
+        },
+        windows: {
+            compile_multilib: "first",
+            enabled: true,
+        },
+    },
+    export_include_dirs: ["include"],
+
+    visibility: [
+        "//art:__subpackages__",
+        "//system/core/adb:__subpackages__",
+        "//frameworks/base/services:__subpackages__",
+
+        // This needs to be visible to minadbd, even though it's removed via exclude_shared_libs.
+        "//bootable/recovery/minadbd:__subpackages__",
+    ],
+    apex_available: [
+        "com.android.adbd",
+    ],
+
+    // libadb_pairing_connection doesn't need an embedded build number.
+    use_version_lib: false,
+
+    stl: "libc++_static",
+
+    host_supported: true,
+    recovery_available: false,
+
+    static_libs: [
+        "libbase",
+        "libssl",
+    ],
+    shared_libs: [
+        "libcrypto",
+        "liblog",
+        "libadb_pairing_auth",
+    ],
+}
+
+cc_library {
+    name: "libadb_pairing_connection",
+    defaults: ["libadb_pairing_connection_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+    ],
+
+    stubs: {
+        symbol_file: "libadb_pairing_connection.map.txt",
+        versions: ["30"],
+    },
+
+    static_libs: [
+        "libadb_protos",
+        // Statically link libadb_tls_connection because it is not
+	// ABI-stable.
+        "libadb_tls_connection",
+        "libprotobuf-cpp-lite",
+    ],
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_pairing_connection_static",
+    defaults: ["libadb_pairing_connection_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+
+    static_libs: [
+        "libadb_protos_static",
+        "libprotobuf-cpp-lite",
+        "libadb_tls_connection_static",
+    ],
+}
+
+cc_defaults {
+    name: "libadb_pairing_server_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    srcs: [
+        "pairing_server.cpp",
+    ],
+    target: {
+        android: {
+            version_script: "libadb_pairing_server.map.txt",
+        },
+    },
+    export_include_dirs: ["include"],
+
+    visibility: [
+        "//art:__subpackages__",
+        "//system/core/adb:__subpackages__",
+        "//frameworks/base/services:__subpackages__",
+    ],
+
+    host_supported: true,
+    recovery_available: false,
+
+    stl: "libc++_static",
+
+    static_libs: [
+        "libbase",
+    ],
+    shared_libs: [
+        "libcrypto",
+        "libcrypto_utils",
+        "libcutils",
+        "liblog",
+        "libadb_pairing_auth",
+        "libadb_pairing_connection",
+    ],
+}
+
+cc_library {
+    name: "libadb_pairing_server",
+    defaults: ["libadb_pairing_server_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+    ],
+
+    stubs: {
+        symbol_file: "libadb_pairing_server.map.txt",
+        versions: ["30"],
+    },
+
+    static_libs: [
+        // Statically link libadb_crypto because it is not
+	// ABI-stable.
+        "libadb_crypto",
+        "libadb_protos",
+    ],
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_pairing_server_static",
+    defaults: ["libadb_pairing_server_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+
+    static_libs: [
+        "libadb_crypto_static",
+        "libadb_protos_static",
+    ],
+}
diff --git a/adb/pairing_connection/include/adb/pairing/pairing_connection.h b/adb/pairing_connection/include/adb/pairing/pairing_connection.h
new file mode 100644
index 0000000..3543b87
--- /dev/null
+++ b/adb/pairing_connection/include/adb/pairing/pairing_connection.h
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+#if !defined(__INTRODUCED_IN)
+#define __INTRODUCED_IN(__api_level) /* nothing */
+#endif
+
+// These APIs are for the Adb pairing protocol. This protocol requires both
+// sides to possess a shared secret to authenticate each other. The connection
+// is over TLS, and requires that both the client and server have a valid
+// certificate.
+//
+// This protocol is one-to-one, i.e., one PairingConnectionCtx server instance
+// interacts with only one PairingConnectionCtx client instance. In other words,
+// every new client instance must be bound to a new server instance.
+//
+// If both sides have authenticated, they will exchange their peer information
+// (see #PeerInfo).
+__BEGIN_DECLS
+#if !defined(__ANDROID__) || __ANDROID_API__ >= 30
+
+const uint32_t kMaxPeerInfoSize = 8192;
+struct PeerInfo {
+    uint8_t type;
+    uint8_t data[kMaxPeerInfoSize - 1];
+} __attribute__((packed));
+typedef struct PeerInfo PeerInfo;
+static_assert(sizeof(PeerInfo) == kMaxPeerInfoSize, "PeerInfo has weird size");
+
+enum PeerInfoType : uint8_t {
+    ADB_RSA_PUB_KEY = 0,
+    ADB_DEVICE_GUID = 1,
+};
+
+struct PairingConnectionCtx;
+typedef struct PairingConnectionCtx PairingConnectionCtx;
+typedef void (*pairing_result_cb)(const PeerInfo*, int, void*);
+
+// Starts the pairing connection on a separate thread.
+//
+// Upon completion, if the pairing was successful,
+// |cb| will be called with the peer information and certificate.
+// Otherwise, |cb| will be called with empty data. |fd| should already
+// be opened. PairingConnectionCtx will take ownership of the |fd|.
+//
+// Pairing is successful if both server/client uses the same non-empty
+// |pswd|, and they are able to exchange the information. |pswd| and
+// |certificate| must be non-empty. start() can only be called once in the
+// lifetime of this object.
+//
+// @param ctx the PairingConnectionCtx instance. Will abort if null.
+// @param fd the fd connecting the peers. This will take ownership of fd.
+// @param cb the user-provided callback that is called with the result of the
+//        pairing. The callback will be called on a different thread from the
+//        caller.
+// @param opaque opaque userdata.
+// @return true if the thread was successfully started, false otherwise. To stop
+//         the connection process, destroy the instance (see
+//         #pairing_connection_destroy). If false is returned, cb will not be
+//         invoked. Otherwise, cb is guaranteed to be invoked, even if you
+//         destroy the ctx while in the pairing process.
+bool pairing_connection_start(PairingConnectionCtx* ctx, int fd, pairing_result_cb cb, void* opaque)
+        __INTRODUCED_IN(30);
+
+// Creates a new PairingConnectionCtx instance as the client.
+//
+// @param pswd the password to authenticate both peers. Will abort if null.
+// @param pswd_len the length of pswd. Will abort if 0.
+// @param peer_info the PeerInfo struct that is exchanged between peers if the
+//                  pairing was successful. Will abort if null.
+// @param x509_cert_pem the X.509 certificate in PEM format. Will abort if null.
+// @param x509_size the size of x509_cert_pem. Will abort if 0.
+// @param priv_key_pem the private key corresponding to the given X.509
+//                     certificate, in PEM format. Will abort if null.
+// @param priv_size the size of priv_key_pem. Will abort if 0.
+// @return a new PairingConnectionCtx client instance. The caller is responsible
+//         for destroying the context via #pairing_connection_destroy.
+PairingConnectionCtx* pairing_connection_client_new(const uint8_t* pswd, size_t pswd_len,
+                                                    const PeerInfo* peer_info,
+                                                    const uint8_t* x509_cert_pem, size_t x509_size,
+                                                    const uint8_t* priv_key_pem, size_t priv_size)
+        __INTRODUCED_IN(30);
+
+// Creates a new PairingConnectionCtx instance as the server.
+//
+// @param pswd the password to authenticate both peers. Will abort if null.
+// @param pswd_len the length of pswd. Will abort if 0.
+// @param peer_info the PeerInfo struct that is exchanged between peers if the
+//                  pairing was successful. Will abort if null.
+// @param x509_cert_pem the X.509 certificate in PEM format. Will abort if null.
+// @param x509_size the size of x509_cert_pem. Will abort if 0.
+// @param priv_key_pem the private key corresponding to the given X.509
+//                     certificate, in PEM format. Will abort if null.
+// @param priv_size the size of priv_key_pem. Will abort if 0.
+// @return a new PairingConnectionCtx server instance. The caller is responsible
+//         for destroying the context via #pairing_connection_destroy.
+PairingConnectionCtx* pairing_connection_server_new(const uint8_t* pswd, size_t pswd_len,
+                                                    const PeerInfo* peer_info,
+                                                    const uint8_t* x509_cert_pem, size_t x509_size,
+                                                    const uint8_t* priv_key_pem, size_t priv_size)
+        __INTRODUCED_IN(30);
+
+// Destroys the PairingConnectionCtx instance.
+//
+// It is safe to destroy the instance at any point in the pairing process.
+//
+// @param ctx the PairingConnectionCtx instance to destroy. Will abort if null.
+void pairing_connection_destroy(PairingConnectionCtx* ctx) __INTRODUCED_IN(30);
+
+#endif  //!__ANDROID__ || __ANDROID_API__ >= 30
+__END_DECLS
diff --git a/adb/pairing_connection/include/adb/pairing/pairing_server.h b/adb/pairing_connection/include/adb/pairing/pairing_server.h
new file mode 100644
index 0000000..178a174
--- /dev/null
+++ b/adb/pairing_connection/include/adb/pairing/pairing_server.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+#include <functional>
+#include <memory>
+#include <string_view>
+#include <vector>
+
+#include "adb/pairing/pairing_connection.h"
+
+#if !defined(__INTRODUCED_IN)
+#define __INTRODUCED_IN(__api_level) /* nothing */
+#endif
+
+__BEGIN_DECLS
+#if !defined(__ANDROID__) || __ANDROID_API__ >= 30
+
+// PairingServerCtx is a wrapper around the #PairingConnectionCtx APIs,
+// which handles multiple client connections.
+//
+// See pairing_connection_test.cpp for example usage.
+//
+struct PairingServerCtx;
+typedef struct PairingServerCtx PairingServerCtx;
+
+// Callback containing the result of the pairing. If #PeerInfo is null,
+// then the pairing failed. Otherwise, pairing succeeded and #PeerInfo
+// contains information about the peer.
+typedef void (*pairing_server_result_cb)(const PeerInfo*, void*) __INTRODUCED_IN(30);
+
+// Starts the pairing server.
+//
+// This call is non-blocking. Upon completion, if the pairing was successful,
+// then |cb| will be called with the PeerInfo
+// containing the info of the trusted peer. Otherwise, |cb| will be
+// called with an empty value. Start can only be called once in the lifetime
+// of this object.
+//
+// @param ctx the PairingServerCtx instance.
+// @param cb the user-provided callback to notify the result of the pairing. See
+//           #pairing_server_result_cb.
+// @param opaque the opaque userdata.
+// @return the port number the server is listening on. Returns 0 on failure.
+uint16_t pairing_server_start(PairingServerCtx* ctx, pairing_server_result_cb cb, void* opaque)
+        __INTRODUCED_IN(30);
+
+// Creates a new PairingServerCtx instance.
+//
+// @param pswd the password used to authenticate the client and server.
+// @param pswd_len the length of pswd.
+// @param peer_info the #PeerInfo struct passed to the client on successful
+//                  pairing.
+// @param x509_cert_pem the X.509 certificate in PEM format. Cannot be empty.
+// @param x509_size the size of x509_cert_pem.
+// @param priv_key_pem the private key corresponding to the given X.509
+//                     certificate, in PEM format. Cannot be empty.
+// @param priv_size the size of priv_key_pem.
+// @param port the port number the server should listen on. Must be within the
+//             valid port range [0, 65535]. If port is 0, then the server will
+//             find an open port to listen on. See #pairing_server_start to
+//             obtain the port used.
+// @return a new PairingServerCtx instance The caller is responsible
+//         for destroying the context via #pairing_server_destroy.
+PairingServerCtx* pairing_server_new(const uint8_t* pswd, size_t pswd_len,
+                                     const PeerInfo* peer_info, const uint8_t* x509_cert_pem,
+                                     size_t x509_size, const uint8_t* priv_key_pem,
+                                     size_t priv_size, uint16_t port) __INTRODUCED_IN(30);
+
+// Same as #pairing_server_new, except that the x509 certificate and private key
+// is generated internally.
+//
+// @param pswd the password used to authenticate the client and server.
+// @param pswd_len the length of pswd.
+// @param peer_info the #PeerInfo struct passed to the client on successful
+//                  pairing.
+// @param port the port number the server should listen on. Must be within the
+//             valid port range [0, 65535]. If port is 0, then the server will
+//             find an open port to listen on. See #pairing_server_start to
+//             obtain the port used.
+// @return a new PairingServerCtx instance The caller is responsible
+//         for destroying the context via #pairing_server_destroy.
+PairingServerCtx* pairing_server_new_no_cert(const uint8_t* pswd, size_t pswd_len,
+                                             const PeerInfo* peer_info, uint16_t port)
+        __INTRODUCED_IN(30);
+
+// Destroys the PairingServerCtx instance.
+//
+// @param ctx the PairingServerCtx instance to destroy.
+void pairing_server_destroy(PairingServerCtx* ctx) __INTRODUCED_IN(30);
+
+#endif  //!__ANDROID__ || __ANDROID_API__ >= 30
+__END_DECLS
diff --git a/adb/pairing_connection/internal/constants.h b/adb/pairing_connection/internal/constants.h
new file mode 100644
index 0000000..9a04f17
--- /dev/null
+++ b/adb/pairing_connection/internal/constants.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+// This file contains constants that can be used both in the pairing_connection
+// code and tested in the pairing_connection_test code.
+namespace adb {
+namespace pairing {
+namespace internal {
+
+// The maximum number of connections the PairingServer can handle at once.
+constexpr int kMaxConnections = 10;
+// The maximum number of attempts the PairingServer will take before quitting.
+// This is to prevent someone malicious from quickly brute-forcing every
+// combination.
+constexpr int kMaxPairingAttempts = 20;
+
+}  // namespace internal
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_connection/libadb_pairing_connection.map.txt b/adb/pairing_connection/libadb_pairing_connection.map.txt
new file mode 100644
index 0000000..abd5f16
--- /dev/null
+++ b/adb/pairing_connection/libadb_pairing_connection.map.txt
@@ -0,0 +1,10 @@
+LIBADB_PAIRING_CONNECTION {
+  global:
+    pairing_connection_client_new; # apex introduced=30
+    pairing_connection_server_new; # apex introduced=30
+    pairing_connection_start; # apex introduced=30
+    pairing_connection_destroy; # apex introduced=30
+
+  local:
+    *;
+};
diff --git a/adb/pairing_connection/libadb_pairing_server.map.txt b/adb/pairing_connection/libadb_pairing_server.map.txt
new file mode 100644
index 0000000..dc0dc89
--- /dev/null
+++ b/adb/pairing_connection/libadb_pairing_server.map.txt
@@ -0,0 +1,10 @@
+LIBADB_PAIRING_SERVER {
+  global:
+    pairing_server_start; # apex introduced=30
+    pairing_server_new; # apex introduced=30
+    pairing_server_new_no_cert; # apex introduced=30
+    pairing_server_destroy; # apex introduced=30
+
+  local:
+    *;
+};
diff --git a/adb/pairing_connection/pairing_connection.cpp b/adb/pairing_connection/pairing_connection.cpp
new file mode 100644
index 0000000..ffe49a9
--- /dev/null
+++ b/adb/pairing_connection/pairing_connection.cpp
@@ -0,0 +1,491 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/pairing/pairing_connection.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <string_view>
+#include <thread>
+#include <vector>
+
+#include <adb/pairing/pairing_auth.h>
+#include <adb/tls/tls_connection.h>
+#include <android-base/endian.h>
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <android-base/unique_fd.h>
+
+#include "pairing.pb.h"
+
+using namespace adb;
+using android::base::unique_fd;
+using TlsError = tls::TlsConnection::TlsError;
+
+const uint8_t kCurrentKeyHeaderVersion = 1;
+const uint8_t kMinSupportedKeyHeaderVersion = 1;
+const uint8_t kMaxSupportedKeyHeaderVersion = 1;
+const uint32_t kMaxPayloadSize = kMaxPeerInfoSize * 2;
+
+struct PairingPacketHeader {
+    uint8_t version;   // PairingPacket version
+    uint8_t type;      // the type of packet (PairingPacket.Type)
+    uint32_t payload;  // Size of the payload in bytes
+} __attribute__((packed));
+
+struct PairingAuthDeleter {
+    void operator()(PairingAuthCtx* p) { pairing_auth_destroy(p); }
+};  // PairingAuthDeleter
+using PairingAuthPtr = std::unique_ptr<PairingAuthCtx, PairingAuthDeleter>;
+
+// PairingConnectionCtx encapsulates the protocol to authenticate two peers with
+// each other. This class will open the tcp sockets and handle the pairing
+// process. On completion, both sides will have each other's public key
+// (certificate) if successful, otherwise, the pairing failed. The tcp port
+// number is hardcoded (see pairing_connection.cpp).
+//
+// Each PairingConnectionCtx instance represents a different device trying to
+// pair. So for the device, we can have multiple PairingConnectionCtxs while the
+// host may have only one (unless host has a PairingServer).
+//
+// See pairing_connection_test.cpp for example usage.
+//
+struct PairingConnectionCtx {
+  public:
+    using Data = std::vector<uint8_t>;
+    using ResultCallback = pairing_result_cb;
+    enum class Role {
+        Client,
+        Server,
+    };
+
+    explicit PairingConnectionCtx(Role role, const Data& pswd, const PeerInfo& peer_info,
+                                  const Data& certificate, const Data& priv_key);
+    virtual ~PairingConnectionCtx();
+
+    // Starts the pairing connection on a separate thread.
+    // Upon completion, if the pairing was successful,
+    // |cb| will be called with the peer information and certificate.
+    // Otherwise, |cb| will be called with empty data. |fd| should already
+    // be opened. PairingConnectionCtx will take ownership of the |fd|.
+    //
+    // Pairing is successful if both server/client uses the same non-empty
+    // |pswd|, and they are able to exchange the information. |pswd| and
+    // |certificate| must be non-empty. Start() can only be called once in the
+    // lifetime of this object.
+    //
+    // Returns true if the thread was successfully started, false otherwise.
+    bool Start(int fd, ResultCallback cb, void* opaque);
+
+  private:
+    // Setup the tls connection.
+    bool SetupTlsConnection();
+
+    /************ PairingPacketHeader methods ****************/
+    // Tries to write out the header and payload.
+    bool WriteHeader(const PairingPacketHeader* header, std::string_view payload);
+    // Tries to parse incoming data into the |header|. Returns true if header
+    // is valid and header version is supported. |header| is filled on success.
+    // |header| may contain garbage if unsuccessful.
+    bool ReadHeader(PairingPacketHeader* header);
+    // Creates a PairingPacketHeader.
+    void CreateHeader(PairingPacketHeader* header, adb::proto::PairingPacket::Type type,
+                      uint32_t payload_size);
+    // Checks if actual matches expected.
+    bool CheckHeaderType(adb::proto::PairingPacket::Type expected, uint8_t actual);
+
+    /*********** State related methods **************/
+    // Handles the State::ExchangingMsgs state.
+    bool DoExchangeMsgs();
+    // Handles the State::ExchangingPeerInfo state.
+    bool DoExchangePeerInfo();
+
+    // The background task to do the pairing.
+    void StartWorker();
+
+    // Calls |cb_| and sets the state to Stopped.
+    void NotifyResult(const PeerInfo* p);
+
+    static PairingAuthPtr CreatePairingAuthPtr(Role role, const Data& pswd);
+
+    enum class State {
+        Ready,
+        ExchangingMsgs,
+        ExchangingPeerInfo,
+        Stopped,
+    };
+
+    std::atomic<State> state_{State::Ready};
+    Role role_;
+    Data pswd_;
+    PeerInfo peer_info_;
+    Data cert_;
+    Data priv_key_;
+
+    // Peer's info
+    PeerInfo their_info_;
+
+    ResultCallback cb_;
+    void* opaque_ = nullptr;
+    std::unique_ptr<tls::TlsConnection> tls_;
+    PairingAuthPtr auth_;
+    unique_fd fd_;
+    std::thread thread_;
+    static constexpr size_t kExportedKeySize = 64;
+};  // PairingConnectionCtx
+
+PairingConnectionCtx::PairingConnectionCtx(Role role, const Data& pswd, const PeerInfo& peer_info,
+                                           const Data& cert, const Data& priv_key)
+    : role_(role), pswd_(pswd), peer_info_(peer_info), cert_(cert), priv_key_(priv_key) {
+    CHECK(!pswd_.empty() && !cert_.empty() && !priv_key_.empty());
+}
+
+PairingConnectionCtx::~PairingConnectionCtx() {
+    // Force close the fd and wait for the worker thread to finish.
+    fd_.reset();
+    if (thread_.joinable()) {
+        thread_.join();
+    }
+}
+
+bool PairingConnectionCtx::SetupTlsConnection() {
+    tls_ = tls::TlsConnection::Create(
+            role_ == Role::Server ? tls::TlsConnection::Role::Server
+                                  : tls::TlsConnection::Role::Client,
+            std::string_view(reinterpret_cast<const char*>(cert_.data()), cert_.size()),
+            std::string_view(reinterpret_cast<const char*>(priv_key_.data()), priv_key_.size()),
+            fd_);
+
+    if (tls_ == nullptr) {
+        LOG(ERROR) << "Unable to start TlsConnection. Unable to pair fd=" << fd_.get();
+        return false;
+    }
+
+    // Allow any peer certificate
+    tls_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+
+    // SSL doesn't seem to behave correctly with fdevents so just do a blocking
+    // read for the pairing data.
+    if (tls_->DoHandshake() != TlsError::Success) {
+        LOG(ERROR) << "Failed to handshake with the peer fd=" << fd_.get();
+        return false;
+    }
+
+    // To ensure the connection is not stolen while we do the PAKE, append the
+    // exported key material from the tls connection to the password.
+    std::vector<uint8_t> exportedKeyMaterial = tls_->ExportKeyingMaterial(kExportedKeySize);
+    if (exportedKeyMaterial.empty()) {
+        LOG(ERROR) << "Failed to export key material";
+        return false;
+    }
+    pswd_.insert(pswd_.end(), std::make_move_iterator(exportedKeyMaterial.begin()),
+                 std::make_move_iterator(exportedKeyMaterial.end()));
+    auth_ = CreatePairingAuthPtr(role_, pswd_);
+
+    return true;
+}
+
+bool PairingConnectionCtx::WriteHeader(const PairingPacketHeader* header,
+                                       std::string_view payload) {
+    PairingPacketHeader network_header = *header;
+    network_header.payload = htonl(network_header.payload);
+    if (!tls_->WriteFully(std::string_view(reinterpret_cast<const char*>(&network_header),
+                                           sizeof(PairingPacketHeader))) ||
+        !tls_->WriteFully(payload)) {
+        LOG(ERROR) << "Failed to write out PairingPacketHeader";
+        state_ = State::Stopped;
+        return false;
+    }
+    return true;
+}
+
+bool PairingConnectionCtx::ReadHeader(PairingPacketHeader* header) {
+    auto data = tls_->ReadFully(sizeof(PairingPacketHeader));
+    if (data.empty()) {
+        return false;
+    }
+
+    uint8_t* p = data.data();
+    // First byte is always PairingPacketHeader version
+    header->version = *p;
+    ++p;
+    if (header->version < kMinSupportedKeyHeaderVersion ||
+        header->version > kMaxSupportedKeyHeaderVersion) {
+        LOG(ERROR) << "PairingPacketHeader version mismatch (us=" << kCurrentKeyHeaderVersion
+                   << " them=" << header->version << ")";
+        return false;
+    }
+    // Next byte is the PairingPacket::Type
+    if (!adb::proto::PairingPacket::Type_IsValid(*p)) {
+        LOG(ERROR) << "Unknown PairingPacket type=" << static_cast<uint32_t>(*p);
+        return false;
+    }
+    header->type = *p;
+    ++p;
+    // Last, the payload size
+    header->payload = ntohl(*(reinterpret_cast<uint32_t*>(p)));
+    if (header->payload == 0 || header->payload > kMaxPayloadSize) {
+        LOG(ERROR) << "header payload not within a safe payload size (size=" << header->payload
+                   << ")";
+        return false;
+    }
+
+    return true;
+}
+
+void PairingConnectionCtx::CreateHeader(PairingPacketHeader* header,
+                                        adb::proto::PairingPacket::Type type,
+                                        uint32_t payload_size) {
+    header->version = kCurrentKeyHeaderVersion;
+    uint8_t type8 = static_cast<uint8_t>(static_cast<int>(type));
+    header->type = type8;
+    header->payload = payload_size;
+}
+
+bool PairingConnectionCtx::CheckHeaderType(adb::proto::PairingPacket::Type expected_type,
+                                           uint8_t actual) {
+    uint8_t expected = *reinterpret_cast<uint8_t*>(&expected_type);
+    if (actual != expected) {
+        LOG(ERROR) << "Unexpected header type (expected=" << static_cast<uint32_t>(expected)
+                   << " actual=" << static_cast<uint32_t>(actual) << ")";
+        return false;
+    }
+    return true;
+}
+
+void PairingConnectionCtx::NotifyResult(const PeerInfo* p) {
+    cb_(p, fd_.get(), opaque_);
+    state_ = State::Stopped;
+}
+
+bool PairingConnectionCtx::Start(int fd, ResultCallback cb, void* opaque) {
+    if (fd < 0) {
+        return false;
+    }
+    fd_.reset(fd);
+
+    State expected = State::Ready;
+    if (!state_.compare_exchange_strong(expected, State::ExchangingMsgs)) {
+        return false;
+    }
+
+    cb_ = cb;
+    opaque_ = opaque;
+
+    thread_ = std::thread([this] { StartWorker(); });
+    return true;
+}
+
+bool PairingConnectionCtx::DoExchangeMsgs() {
+    uint32_t payload = pairing_auth_msg_size(auth_.get());
+    std::vector<uint8_t> msg(payload);
+    pairing_auth_get_spake2_msg(auth_.get(), msg.data());
+
+    PairingPacketHeader header;
+    CreateHeader(&header, adb::proto::PairingPacket::SPAKE2_MSG, payload);
+
+    // Write our SPAKE2 msg
+    if (!WriteHeader(&header,
+                     std::string_view(reinterpret_cast<const char*>(msg.data()), msg.size()))) {
+        LOG(ERROR) << "Failed to write SPAKE2 msg.";
+        return false;
+    }
+
+    // Read the peer's SPAKE2 msg header
+    if (!ReadHeader(&header)) {
+        LOG(ERROR) << "Invalid PairingPacketHeader.";
+        return false;
+    }
+    if (!CheckHeaderType(adb::proto::PairingPacket::SPAKE2_MSG, header.type)) {
+        return false;
+    }
+
+    // Read the SPAKE2 msg payload and initialize the cipher for
+    // encrypting the PeerInfo and certificate.
+    auto their_msg = tls_->ReadFully(header.payload);
+    if (their_msg.empty() ||
+        !pairing_auth_init_cipher(auth_.get(), their_msg.data(), their_msg.size())) {
+        LOG(ERROR) << "Unable to initialize pairing cipher [their_msg.size=" << their_msg.size()
+                   << "]";
+        return false;
+    }
+
+    return true;
+}
+
+bool PairingConnectionCtx::DoExchangePeerInfo() {
+    // Encrypt PeerInfo
+    std::vector<uint8_t> buf;
+    uint8_t* p = reinterpret_cast<uint8_t*>(&peer_info_);
+    buf.assign(p, p + sizeof(peer_info_));
+    std::vector<uint8_t> outbuf(pairing_auth_safe_encrypted_size(auth_.get(), buf.size()));
+    CHECK(!outbuf.empty());
+    size_t outsize;
+    if (!pairing_auth_encrypt(auth_.get(), buf.data(), buf.size(), outbuf.data(), &outsize)) {
+        LOG(ERROR) << "Failed to encrypt peer info";
+        return false;
+    }
+    outbuf.resize(outsize);
+
+    // Write out the packet header
+    PairingPacketHeader out_header;
+    out_header.version = kCurrentKeyHeaderVersion;
+    out_header.type = static_cast<uint8_t>(static_cast<int>(adb::proto::PairingPacket::PEER_INFO));
+    out_header.payload = htonl(outbuf.size());
+    if (!tls_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(&out_header), sizeof(out_header)))) {
+        LOG(ERROR) << "Unable to write PairingPacketHeader";
+        return false;
+    }
+
+    // Write out the encrypted payload
+    if (!tls_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(outbuf.data()), outbuf.size()))) {
+        LOG(ERROR) << "Unable to write encrypted peer info";
+        return false;
+    }
+
+    // Read in the peer's packet header
+    PairingPacketHeader header;
+    if (!ReadHeader(&header)) {
+        LOG(ERROR) << "Invalid PairingPacketHeader.";
+        return false;
+    }
+
+    if (!CheckHeaderType(adb::proto::PairingPacket::PEER_INFO, header.type)) {
+        return false;
+    }
+
+    // Read in the encrypted peer certificate
+    buf = tls_->ReadFully(header.payload);
+    if (buf.empty()) {
+        return false;
+    }
+
+    // Try to decrypt the certificate
+    outbuf.resize(pairing_auth_safe_decrypted_size(auth_.get(), buf.data(), buf.size()));
+    if (outbuf.empty()) {
+        LOG(ERROR) << "Unsupported payload while decrypting peer info.";
+        return false;
+    }
+
+    if (!pairing_auth_decrypt(auth_.get(), buf.data(), buf.size(), outbuf.data(), &outsize)) {
+        LOG(ERROR) << "Failed to decrypt";
+        return false;
+    }
+    outbuf.resize(outsize);
+
+    // The decrypted message should contain the PeerInfo.
+    if (outbuf.size() != sizeof(PeerInfo)) {
+        LOG(ERROR) << "Got size=" << outbuf.size() << "PeerInfo.size=" << sizeof(PeerInfo);
+        return false;
+    }
+
+    p = outbuf.data();
+    ::memcpy(&their_info_, p, sizeof(PeerInfo));
+    p += sizeof(PeerInfo);
+
+    return true;
+}
+
+void PairingConnectionCtx::StartWorker() {
+    // Setup the secure transport
+    if (!SetupTlsConnection()) {
+        NotifyResult(nullptr);
+        return;
+    }
+
+    for (;;) {
+        switch (state_) {
+            case State::ExchangingMsgs:
+                if (!DoExchangeMsgs()) {
+                    NotifyResult(nullptr);
+                    return;
+                }
+                state_ = State::ExchangingPeerInfo;
+                break;
+            case State::ExchangingPeerInfo:
+                if (!DoExchangePeerInfo()) {
+                    NotifyResult(nullptr);
+                    return;
+                }
+                NotifyResult(&their_info_);
+                return;
+            case State::Ready:
+            case State::Stopped:
+                LOG(FATAL) << __func__ << ": Got invalid state";
+                return;
+        }
+    }
+}
+
+// static
+PairingAuthPtr PairingConnectionCtx::CreatePairingAuthPtr(Role role, const Data& pswd) {
+    switch (role) {
+        case Role::Client:
+            return PairingAuthPtr(pairing_auth_client_new(pswd.data(), pswd.size()));
+            break;
+        case Role::Server:
+            return PairingAuthPtr(pairing_auth_server_new(pswd.data(), pswd.size()));
+            break;
+    }
+}
+
+static PairingConnectionCtx* CreateConnection(PairingConnectionCtx::Role role, const uint8_t* pswd,
+                                              size_t pswd_len, const PeerInfo* peer_info,
+                                              const uint8_t* x509_cert_pem, size_t x509_size,
+                                              const uint8_t* priv_key_pem, size_t priv_size) {
+    CHECK(pswd);
+    CHECK_GT(pswd_len, 0U);
+    CHECK(x509_cert_pem);
+    CHECK_GT(x509_size, 0U);
+    CHECK(priv_key_pem);
+    CHECK_GT(priv_size, 0U);
+    CHECK(peer_info);
+    std::vector<uint8_t> vec_pswd(pswd, pswd + pswd_len);
+    std::vector<uint8_t> vec_x509_cert(x509_cert_pem, x509_cert_pem + x509_size);
+    std::vector<uint8_t> vec_priv_key(priv_key_pem, priv_key_pem + priv_size);
+    return new PairingConnectionCtx(role, vec_pswd, *peer_info, vec_x509_cert, vec_priv_key);
+}
+
+PairingConnectionCtx* pairing_connection_client_new(const uint8_t* pswd, size_t pswd_len,
+                                                    const PeerInfo* peer_info,
+                                                    const uint8_t* x509_cert_pem, size_t x509_size,
+                                                    const uint8_t* priv_key_pem, size_t priv_size) {
+    return CreateConnection(PairingConnectionCtx::Role::Client, pswd, pswd_len, peer_info,
+                            x509_cert_pem, x509_size, priv_key_pem, priv_size);
+}
+
+PairingConnectionCtx* pairing_connection_server_new(const uint8_t* pswd, size_t pswd_len,
+                                                    const PeerInfo* peer_info,
+                                                    const uint8_t* x509_cert_pem, size_t x509_size,
+                                                    const uint8_t* priv_key_pem, size_t priv_size) {
+    return CreateConnection(PairingConnectionCtx::Role::Server, pswd, pswd_len, peer_info,
+                            x509_cert_pem, x509_size, priv_key_pem, priv_size);
+}
+
+void pairing_connection_destroy(PairingConnectionCtx* ctx) {
+    CHECK(ctx);
+    delete ctx;
+}
+
+bool pairing_connection_start(PairingConnectionCtx* ctx, int fd, pairing_result_cb cb,
+                              void* opaque) {
+    return ctx->Start(fd, cb, opaque);
+}
diff --git a/adb/pairing_connection/pairing_server.cpp b/adb/pairing_connection/pairing_server.cpp
new file mode 100644
index 0000000..7218eac
--- /dev/null
+++ b/adb/pairing_connection/pairing_server.cpp
@@ -0,0 +1,466 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/pairing/pairing_server.h"
+
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+
+#include <atomic>
+#include <deque>
+#include <iomanip>
+#include <mutex>
+#include <sstream>
+#include <thread>
+#include <tuple>
+#include <unordered_map>
+#include <variant>
+#include <vector>
+
+#include <adb/crypto/rsa_2048_key.h>
+#include <adb/crypto/x509_generator.h>
+#include <adb/pairing/pairing_connection.h>
+#include <android-base/logging.h>
+#include <android-base/parsenetaddress.h>
+#include <android-base/thread_annotations.h>
+#include <android-base/unique_fd.h>
+#include <cutils/sockets.h>
+
+#include "internal/constants.h"
+
+using android::base::ScopedLockAssertion;
+using android::base::unique_fd;
+using namespace adb::crypto;
+using namespace adb::pairing;
+
+// The implementation has two background threads running: one to handle and
+// accept any new pairing connection requests (socket accept), and the other to
+// handle connection events (connection started, connection finished).
+struct PairingServerCtx {
+  public:
+    using Data = std::vector<uint8_t>;
+
+    virtual ~PairingServerCtx();
+
+    // All parameters must be non-empty.
+    explicit PairingServerCtx(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                              const Data& priv_key, uint16_t port);
+
+    // Starts the pairing server. This call is non-blocking. Upon completion,
+    // if the pairing was successful, then |cb| will be called with the PublicKeyHeader
+    // containing the info of the trusted peer. Otherwise, |cb| will be
+    // called with an empty value. Start can only be called once in the lifetime
+    // of this object.
+    //
+    // Returns the port number if PairingServerCtx was successfully started. Otherwise,
+    // returns 0.
+    uint16_t Start(pairing_server_result_cb cb, void* opaque);
+
+  private:
+    // Setup the server socket to accept incoming connections. Returns the
+    // server port number (> 0 on success).
+    uint16_t SetupServer();
+    // Force stop the server thread.
+    void StopServer();
+
+    // handles a new pairing client connection
+    bool HandleNewClientConnection(int fd) EXCLUDES(conn_mutex_);
+
+    // ======== connection events thread =============
+    std::mutex conn_mutex_;
+    std::condition_variable conn_cv_;
+
+    using FdVal = int;
+    struct ConnectionDeleter {
+        void operator()(PairingConnectionCtx* p) { pairing_connection_destroy(p); }
+    };
+    using ConnectionPtr = std::unique_ptr<PairingConnectionCtx, ConnectionDeleter>;
+    static ConnectionPtr CreatePairingConnection(const Data& pswd, const PeerInfo& peer_info,
+                                                 const Data& cert, const Data& priv_key);
+    using NewConnectionEvent = std::tuple<unique_fd, ConnectionPtr>;
+    // <fd, PeerInfo.type, PeerInfo.data>
+    using ConnectionFinishedEvent = std::tuple<FdVal, uint8_t, std::optional<std::string>>;
+    using ConnectionEvent = std::variant<NewConnectionEvent, ConnectionFinishedEvent>;
+    // Queue for connections to write into. We have a separate queue to read
+    // from, in order to minimize the time the server thread is blocked.
+    std::deque<ConnectionEvent> conn_write_queue_ GUARDED_BY(conn_mutex_);
+    std::deque<ConnectionEvent> conn_read_queue_;
+    // Map of fds to their PairingConnections currently running.
+    std::unordered_map<FdVal, ConnectionPtr> connections_;
+
+    // Two threads launched when starting the pairing server:
+    // 1) A server thread that waits for incoming client connections, and
+    // 2) A connection events thread that synchonizes events from all of the
+    //    clients, since each PairingConnection is running in it's own thread.
+    void StartConnectionEventsThread();
+    void StartServerThread();
+
+    static void PairingConnectionCallback(const PeerInfo* peer_info, int fd, void* opaque);
+
+    std::thread conn_events_thread_;
+    void ConnectionEventsWorker();
+    std::thread server_thread_;
+    void ServerWorker();
+    bool is_terminate_ GUARDED_BY(conn_mutex_) = false;
+
+    enum class State {
+        Ready,
+        Running,
+        Stopped,
+    };
+    State state_ = State::Ready;
+    Data pswd_;
+    PeerInfo peer_info_;
+    Data cert_;
+    Data priv_key_;
+    uint16_t port_;
+
+    pairing_server_result_cb cb_;
+    void* opaque_ = nullptr;
+    bool got_valid_pairing_ = false;
+
+    static const int kEpollConstSocket = 0;
+    // Used to break the server thread from epoll_wait
+    static const int kEpollConstEventFd = 1;
+    unique_fd epoll_fd_;
+    unique_fd server_fd_;
+    unique_fd event_fd_;
+};  // PairingServerCtx
+
+// static
+PairingServerCtx::ConnectionPtr PairingServerCtx::CreatePairingConnection(const Data& pswd,
+                                                                          const PeerInfo& peer_info,
+                                                                          const Data& cert,
+                                                                          const Data& priv_key) {
+    return ConnectionPtr(pairing_connection_server_new(pswd.data(), pswd.size(), &peer_info,
+                                                       cert.data(), cert.size(), priv_key.data(),
+                                                       priv_key.size()));
+}
+
+PairingServerCtx::PairingServerCtx(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                                   const Data& priv_key, uint16_t port)
+    : pswd_(pswd), peer_info_(peer_info), cert_(cert), priv_key_(priv_key), port_(port) {
+    CHECK(!pswd_.empty() && !cert_.empty() && !priv_key_.empty());
+}
+
+PairingServerCtx::~PairingServerCtx() {
+    // Since these connections have references to us, let's make sure they
+    // destruct before us.
+    if (server_thread_.joinable()) {
+        StopServer();
+        server_thread_.join();
+    }
+
+    {
+        std::lock_guard<std::mutex> lock(conn_mutex_);
+        is_terminate_ = true;
+    }
+    conn_cv_.notify_one();
+    if (conn_events_thread_.joinable()) {
+        conn_events_thread_.join();
+    }
+
+    // Notify the cb_ if it hasn't already.
+    if (!got_valid_pairing_ && cb_ != nullptr) {
+        cb_(nullptr, opaque_);
+    }
+}
+
+uint16_t PairingServerCtx::Start(pairing_server_result_cb cb, void* opaque) {
+    cb_ = cb;
+    opaque_ = opaque;
+
+    if (state_ != State::Ready) {
+        LOG(ERROR) << "PairingServerCtx already running or stopped";
+        return 0;
+    }
+
+    port_ = SetupServer();
+    if (port_ == 0) {
+        LOG(ERROR) << "Unable to start PairingServer";
+        state_ = State::Stopped;
+        return 0;
+    }
+    LOG(INFO) << "Pairing server started on port " << port_;
+
+    state_ = State::Running;
+    return port_;
+}
+
+void PairingServerCtx::StopServer() {
+    if (event_fd_.get() == -1) {
+        return;
+    }
+    uint64_t value = 1;
+    ssize_t rc = write(event_fd_.get(), &value, sizeof(value));
+    if (rc == -1) {
+        // This can happen if the server didn't start.
+        PLOG(ERROR) << "write to eventfd failed";
+    } else if (rc != sizeof(value)) {
+        LOG(FATAL) << "write to event returned short (" << rc << ")";
+    }
+}
+
+uint16_t PairingServerCtx::SetupServer() {
+    epoll_fd_.reset(epoll_create1(EPOLL_CLOEXEC));
+    if (epoll_fd_ == -1) {
+        PLOG(ERROR) << "failed to create epoll fd";
+        return 0;
+    }
+
+    event_fd_.reset(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK));
+    if (event_fd_ == -1) {
+        PLOG(ERROR) << "failed to create eventfd";
+        return 0;
+    }
+
+    server_fd_.reset(socket_inaddr_any_server(port_, SOCK_STREAM));
+    if (server_fd_.get() == -1) {
+        PLOG(ERROR) << "Failed to start pairing connection server";
+        return 0;
+    } else if (fcntl(server_fd_.get(), F_SETFD, FD_CLOEXEC) != 0) {
+        PLOG(ERROR) << "Failed to make server socket cloexec";
+        return 0;
+    } else if (fcntl(server_fd_.get(), F_SETFD, O_NONBLOCK) != 0) {
+        PLOG(ERROR) << "Failed to make server socket nonblocking";
+        return 0;
+    }
+
+    StartConnectionEventsThread();
+    StartServerThread();
+    int port = socket_get_local_port(server_fd_.get());
+    return (port <= 0 ? 0 : port);
+}
+
+void PairingServerCtx::StartServerThread() {
+    server_thread_ = std::thread([this]() { ServerWorker(); });
+}
+
+void PairingServerCtx::StartConnectionEventsThread() {
+    conn_events_thread_ = std::thread([this]() { ConnectionEventsWorker(); });
+}
+
+void PairingServerCtx::ServerWorker() {
+    {
+        struct epoll_event event;
+        event.events = EPOLLIN;
+        event.data.u64 = kEpollConstSocket;
+        CHECK_EQ(0, epoll_ctl(epoll_fd_.get(), EPOLL_CTL_ADD, server_fd_.get(), &event));
+    }
+
+    {
+        struct epoll_event event;
+        event.events = EPOLLIN;
+        event.data.u64 = kEpollConstEventFd;
+        CHECK_EQ(0, epoll_ctl(epoll_fd_.get(), EPOLL_CTL_ADD, event_fd_.get(), &event));
+    }
+
+    while (true) {
+        struct epoll_event events[2];
+        int rc = TEMP_FAILURE_RETRY(epoll_wait(epoll_fd_.get(), events, 2, -1));
+        if (rc == -1) {
+            PLOG(ERROR) << "epoll_wait failed";
+            return;
+        } else if (rc == 0) {
+            LOG(ERROR) << "epoll_wait returned 0";
+            return;
+        }
+
+        for (int i = 0; i < rc; ++i) {
+            struct epoll_event& event = events[i];
+            switch (event.data.u64) {
+                case kEpollConstSocket:
+                    HandleNewClientConnection(server_fd_.get());
+                    break;
+                case kEpollConstEventFd:
+                    uint64_t dummy;
+                    int rc = TEMP_FAILURE_RETRY(read(event_fd_.get(), &dummy, sizeof(dummy)));
+                    if (rc != sizeof(dummy)) {
+                        PLOG(FATAL) << "failed to read from eventfd (rc=" << rc << ")";
+                    }
+                    return;
+            }
+        }
+    }
+}
+
+// static
+void PairingServerCtx::PairingConnectionCallback(const PeerInfo* peer_info, int fd, void* opaque) {
+    auto* p = reinterpret_cast<PairingServerCtx*>(opaque);
+
+    ConnectionFinishedEvent event;
+    if (peer_info != nullptr) {
+        if (peer_info->type == ADB_RSA_PUB_KEY) {
+            event = std::make_tuple(fd, peer_info->type,
+                                    std::string(reinterpret_cast<const char*>(peer_info->data)));
+        } else {
+            LOG(WARNING) << "Ignoring successful pairing because of unknown "
+                         << "PeerInfo type=" << peer_info->type;
+        }
+    } else {
+        event = std::make_tuple(fd, 0, std::nullopt);
+    }
+    {
+        std::lock_guard<std::mutex> lock(p->conn_mutex_);
+        p->conn_write_queue_.push_back(std::move(event));
+    }
+    p->conn_cv_.notify_one();
+}
+
+void PairingServerCtx::ConnectionEventsWorker() {
+    uint8_t num_tries = 0;
+    for (;;) {
+        // Transfer the write queue to the read queue.
+        {
+            std::unique_lock<std::mutex> lock(conn_mutex_);
+            ScopedLockAssertion assume_locked(conn_mutex_);
+
+            if (is_terminate_) {
+                // We check |is_terminate_| twice because condition_variable's
+                // notify() only wakes up a thread if it is in the wait state
+                // prior to notify(). Furthermore, we aren't holding the mutex
+                // when processing the events in |conn_read_queue_|.
+                return;
+            }
+            if (conn_write_queue_.empty()) {
+                // We need to wait for new events, or the termination signal.
+                conn_cv_.wait(lock, [this]() REQUIRES(conn_mutex_) {
+                    return (is_terminate_ || !conn_write_queue_.empty());
+                });
+            }
+            if (is_terminate_) {
+                // We're done.
+                return;
+            }
+            // Move all events into the read queue.
+            conn_read_queue_ = std::move(conn_write_queue_);
+            conn_write_queue_.clear();
+        }
+
+        // Process all events in the read queue.
+        while (conn_read_queue_.size() > 0) {
+            auto& event = conn_read_queue_.front();
+            if (auto* p = std::get_if<NewConnectionEvent>(&event)) {
+                // Ignore if we are already at the max number of connections
+                if (connections_.size() >= internal::kMaxConnections) {
+                    conn_read_queue_.pop_front();
+                    continue;
+                }
+                auto [ufd, connection] = std::move(*p);
+                int fd = ufd.release();
+                bool started = pairing_connection_start(connection.get(), fd,
+                                                        PairingConnectionCallback, this);
+                if (!started) {
+                    LOG(ERROR) << "PairingServer unable to start a PairingConnection fd=" << fd;
+                    ufd.reset(fd);
+                } else {
+                    connections_[fd] = std::move(connection);
+                }
+            } else if (auto* p = std::get_if<ConnectionFinishedEvent>(&event)) {
+                auto [fd, info_type, public_key] = std::move(*p);
+                if (public_key.has_value() && !public_key->empty()) {
+                    // Valid pairing. Let's shutdown the server and close any
+                    // pairing connections in progress.
+                    StopServer();
+                    connections_.clear();
+
+                    PeerInfo info = {};
+                    info.type = info_type;
+                    strncpy(reinterpret_cast<char*>(info.data), public_key->data(),
+                            public_key->size());
+
+                    cb_(&info, opaque_);
+
+                    got_valid_pairing_ = true;
+                    return;
+                }
+                // Invalid pairing. Close the invalid connection.
+                if (connections_.find(fd) != connections_.end()) {
+                    connections_.erase(fd);
+                }
+
+                if (++num_tries >= internal::kMaxPairingAttempts) {
+                    cb_(nullptr, opaque_);
+                    // To prevent the destructor from calling it again.
+                    cb_ = nullptr;
+                    return;
+                }
+            }
+            conn_read_queue_.pop_front();
+        }
+    }
+}
+
+bool PairingServerCtx::HandleNewClientConnection(int fd) {
+    unique_fd ufd(TEMP_FAILURE_RETRY(accept4(fd, nullptr, nullptr, SOCK_CLOEXEC)));
+    if (ufd == -1) {
+        PLOG(WARNING) << "adb_socket_accept failed fd=" << fd;
+        return false;
+    }
+    auto connection = CreatePairingConnection(pswd_, peer_info_, cert_, priv_key_);
+    if (connection == nullptr) {
+        LOG(ERROR) << "PairingServer unable to create a PairingConnection fd=" << fd;
+        return false;
+    }
+    // send the new connection to the connection thread for further processing
+    NewConnectionEvent event = std::make_tuple(std::move(ufd), std::move(connection));
+    {
+        std::lock_guard<std::mutex> lock(conn_mutex_);
+        conn_write_queue_.push_back(std::move(event));
+    }
+    conn_cv_.notify_one();
+
+    return true;
+}
+
+uint16_t pairing_server_start(PairingServerCtx* ctx, pairing_server_result_cb cb, void* opaque) {
+    return ctx->Start(cb, opaque);
+}
+
+PairingServerCtx* pairing_server_new(const uint8_t* pswd, size_t pswd_len,
+                                     const PeerInfo* peer_info, const uint8_t* x509_cert_pem,
+                                     size_t x509_size, const uint8_t* priv_key_pem,
+                                     size_t priv_size, uint16_t port) {
+    CHECK(pswd);
+    CHECK_GT(pswd_len, 0U);
+    CHECK(x509_cert_pem);
+    CHECK_GT(x509_size, 0U);
+    CHECK(priv_key_pem);
+    CHECK_GT(priv_size, 0U);
+    CHECK(peer_info);
+    std::vector<uint8_t> vec_pswd(pswd, pswd + pswd_len);
+    std::vector<uint8_t> vec_x509_cert(x509_cert_pem, x509_cert_pem + x509_size);
+    std::vector<uint8_t> vec_priv_key(priv_key_pem, priv_key_pem + priv_size);
+    return new PairingServerCtx(vec_pswd, *peer_info, vec_x509_cert, vec_priv_key, port);
+}
+
+PairingServerCtx* pairing_server_new_no_cert(const uint8_t* pswd, size_t pswd_len,
+                                             const PeerInfo* peer_info, uint16_t port) {
+    auto rsa_2048 = CreateRSA2048Key();
+    auto x509_cert = GenerateX509Certificate(rsa_2048->GetEvpPkey());
+    std::string pkey_pem = Key::ToPEMString(rsa_2048->GetEvpPkey());
+    std::string cert_pem = X509ToPEMString(x509_cert.get());
+
+    return pairing_server_new(pswd, pswd_len, peer_info,
+                              reinterpret_cast<const uint8_t*>(cert_pem.data()), cert_pem.size(),
+                              reinterpret_cast<const uint8_t*>(pkey_pem.data()), pkey_pem.size(),
+                              port);
+}
+
+void pairing_server_destroy(PairingServerCtx* ctx) {
+    CHECK(ctx);
+    delete ctx;
+}
diff --git a/adb/pairing_connection/tests/Android.bp b/adb/pairing_connection/tests/Android.bp
new file mode 100644
index 0000000..bf075bc
--- /dev/null
+++ b/adb/pairing_connection/tests/Android.bp
@@ -0,0 +1,47 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "adb_pairing_connection_test",
+    srcs: [
+        "pairing_client.cpp",
+        "pairing_connection_test.cpp",
+    ],
+
+    compile_multilib: "first",
+
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libcrypto",
+        "libcrypto_utils",
+        "libprotobuf-cpp-lite",
+        "libssl",
+    ],
+
+    // Let's statically link them so we don't have to install it onto the
+    // system image for testing.
+    static_libs: [
+        "libadb_pairing_auth_static",
+        "libadb_pairing_connection_static",
+        "libadb_pairing_server_static",
+        "libadb_crypto_static",
+        "libadb_protos_static",
+        "libadb_tls_connection_static",
+    ],
+
+    test_suites: ["device-tests"],
+}
diff --git a/adb/pairing_connection/tests/pairing_client.cpp b/adb/pairing_connection/tests/pairing_client.cpp
new file mode 100644
index 0000000..1f3ef5a
--- /dev/null
+++ b/adb/pairing_connection/tests/pairing_client.cpp
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "pairing_client.h"
+
+#include <netdb.h>
+#include <netinet/tcp.h>
+
+#include <atomic>
+#include <iomanip>
+#include <mutex>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/parsenetaddress.h>
+#include <android-base/stringprintf.h>
+#include <android-base/thread_annotations.h>
+#include <android-base/unique_fd.h>
+#include <cutils/sockets.h>
+
+namespace adb {
+namespace pairing {
+
+using android::base::unique_fd;
+
+static void ConnectionDeleter(PairingConnectionCtx* p) {
+    pairing_connection_destroy(p);
+}
+using ConnectionPtr = std::unique_ptr<PairingConnectionCtx, decltype(&ConnectionDeleter)>;
+
+namespace {
+
+class PairingClientImpl : public PairingClient {
+  public:
+    explicit PairingClientImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                               const Data& priv_key);
+
+    // Starts the pairing client. This call is non-blocking. Upon pairing
+    // completion, |cb| will be called with the PeerInfo on success,
+    // or an empty value on failure.
+    //
+    // Returns true if PairingClient was successfully started. Otherwise,
+    // return false.
+    virtual bool Start(std::string_view ip_addr, pairing_client_result_cb cb,
+                       void* opaque) override;
+
+  private:
+    static ConnectionPtr CreatePairingConnection(const Data& pswd, const PeerInfo& peer_info,
+                                                 const Data& cert, const Data& priv_key);
+
+    static void PairingResultCallback(const PeerInfo* peer_info, int fd, void* opaque);
+    // Setup and start the PairingConnection
+    bool StartConnection();
+
+    enum class State {
+        Ready,
+        Running,
+        Stopped,
+    };
+
+    State state_ = State::Ready;
+    Data pswd_;
+    PeerInfo peer_info_;
+    Data cert_;
+    Data priv_key_;
+    std::string host_;
+    int port_;
+
+    ConnectionPtr connection_;
+    pairing_client_result_cb cb_;
+    void* opaque_ = nullptr;
+};  // PairingClientImpl
+
+// static
+ConnectionPtr PairingClientImpl::CreatePairingConnection(const Data& pswd,
+                                                         const PeerInfo& peer_info,
+                                                         const Data& cert, const Data& priv_key) {
+    return ConnectionPtr(
+            pairing_connection_client_new(pswd.data(), pswd.size(), &peer_info, cert.data(),
+                                          cert.size(), priv_key.data(), priv_key.size()),
+            ConnectionDeleter);
+}
+
+PairingClientImpl::PairingClientImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert,
+                                     const Data& priv_key)
+    : pswd_(pswd),
+      peer_info_(peer_info),
+      cert_(cert),
+      priv_key_(priv_key),
+      connection_(nullptr, ConnectionDeleter) {
+    CHECK(!pswd_.empty() && !cert_.empty() && !priv_key_.empty());
+
+    state_ = State::Ready;
+}
+
+bool PairingClientImpl::Start(std::string_view ip_addr, pairing_client_result_cb cb, void* opaque) {
+    CHECK(!ip_addr.empty());
+    cb_ = cb;
+    opaque_ = opaque;
+
+    if (state_ != State::Ready) {
+        LOG(ERROR) << "PairingClient already running or finished";
+        return false;
+    }
+
+    // Try to parse the host address
+    std::string err;
+    CHECK(android::base::ParseNetAddress(std::string(ip_addr), &host_, &port_, nullptr, &err));
+    CHECK(port_ > 0 && port_ <= 65535);
+
+    if (!StartConnection()) {
+        LOG(ERROR) << "Unable to start PairingClient connection";
+        state_ = State::Stopped;
+        return false;
+    }
+
+    state_ = State::Running;
+    return true;
+}
+
+static int network_connect(const std::string& host, int port, int type, int timeout,
+                           std::string* error) {
+    int getaddrinfo_error = 0;
+    int fd = socket_network_client_timeout(host.c_str(), port, type, timeout, &getaddrinfo_error);
+    if (fd != -1) {
+        return fd;
+    }
+    if (getaddrinfo_error != 0) {
+        *error = android::base::StringPrintf("failed to resolve host: '%s': %s", host.c_str(),
+                                             gai_strerror(getaddrinfo_error));
+        LOG(WARNING) << *error;
+    } else {
+        *error = android::base::StringPrintf("failed to connect to '%s:%d': %s", host.c_str(), port,
+                                             strerror(errno));
+        LOG(WARNING) << *error;
+    }
+    return -1;
+}
+
+// static
+void PairingClientImpl::PairingResultCallback(const PeerInfo* peer_info, int /* fd */,
+                                              void* opaque) {
+    auto* p = reinterpret_cast<PairingClientImpl*>(opaque);
+    p->cb_(peer_info, p->opaque_);
+}
+
+bool PairingClientImpl::StartConnection() {
+    std::string err;
+    const int timeout = 10;  // seconds
+    unique_fd fd(network_connect(host_, port_, SOCK_STREAM, timeout, &err));
+    if (fd.get() == -1) {
+        LOG(ERROR) << "Failed to start pairing connection client [" << err << "]";
+        return false;
+    }
+    int off = 1;
+    setsockopt(fd.get(), IPPROTO_TCP, TCP_NODELAY, &off, sizeof(off));
+
+    connection_ = CreatePairingConnection(pswd_, peer_info_, cert_, priv_key_);
+    if (connection_ == nullptr) {
+        LOG(ERROR) << "PairingClient unable to create a PairingConnection";
+        return false;
+    }
+
+    if (!pairing_connection_start(connection_.get(), fd.release(), PairingResultCallback, this)) {
+        LOG(ERROR) << "PairingClient failed to start the PairingConnection";
+        state_ = State::Stopped;
+        return false;
+    }
+
+    return true;
+}
+
+}  // namespace
+
+// static
+std::unique_ptr<PairingClient> PairingClient::Create(const Data& pswd, const PeerInfo& peer_info,
+                                                     const Data& cert, const Data& priv_key) {
+    CHECK(!pswd.empty());
+    CHECK(!cert.empty());
+    CHECK(!priv_key.empty());
+
+    return std::unique_ptr<PairingClient>(new PairingClientImpl(pswd, peer_info, cert, priv_key));
+}
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_connection/tests/pairing_client.h b/adb/pairing_connection/tests/pairing_client.h
new file mode 100644
index 0000000..be0db5c
--- /dev/null
+++ b/adb/pairing_connection/tests/pairing_client.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <string_view>
+#include <vector>
+
+#include "adb/pairing/pairing_connection.h"
+
+typedef void (*pairing_client_result_cb)(const PeerInfo*, void*);
+
+namespace adb {
+namespace pairing {
+
+// PairingClient is the client side of the PairingConnection protocol. It will
+// attempt to connect to a PairingServer specified at |host| and |port|, and
+// allocate a new PairingConnection for processing.
+//
+// See pairing_connection_test.cpp for example usage.
+//
+class PairingClient {
+  public:
+    using Data = std::vector<uint8_t>;
+
+    virtual ~PairingClient() = default;
+
+    // Starts the pairing client. This call is non-blocking. Upon completion,
+    // if the pairing was successful, then |cb| will be called with the PeerInfo
+    // containing the info of the trusted peer. Otherwise, |cb| will be
+    // called with an empty value. Start can only be called once in the lifetime
+    // of this object. |ip_addr| requires a port to be specified.
+    //
+    // Returns true if PairingClient was successfully started. Otherwise,
+    // returns false.
+    virtual bool Start(std::string_view ip_addr, pairing_client_result_cb cb, void* opaque) = 0;
+
+    // Creates a new PairingClient instance. May return null if unable
+    // to create an instance. |pswd|, |certificate|, |priv_key| and
+    // |ip_addr| cannot be empty. |peer_info| must contain non-empty strings for
+    // the guid and name fields.
+    static std::unique_ptr<PairingClient> Create(const Data& pswd, const PeerInfo& peer_info,
+                                                 const Data& certificate, const Data& priv_key);
+
+  protected:
+    PairingClient() = default;
+};  // class PairingClient
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/pairing_connection/tests/pairing_connection_test.cpp b/adb/pairing_connection/tests/pairing_connection_test.cpp
new file mode 100644
index 0000000..b6e09f1
--- /dev/null
+++ b/adb/pairing_connection/tests/pairing_connection_test.cpp
@@ -0,0 +1,500 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AdbPairingConnectionTest"
+
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+
+#include <adb/pairing/pairing_server.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <gtest/gtest.h>
+
+#include "../internal/constants.h"
+#include "pairing_client.h"
+
+using namespace std::chrono_literals;
+
+namespace adb {
+namespace pairing {
+
+// Test X.509 certificates (RSA 2048)
+static const std::string kTestRsa2048ServerCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIDFzCCAf+gAwIBAgIBATANBgkqhkiG9w0BAQsFADAtMQswCQYDVQQGEwJVUzEQ\n"
+        "MA4GA1UECgwHQW5kcm9pZDEMMAoGA1UEAwwDQWRiMB4XDTIwMDEyMTIyMjU1NVoX\n"
+        "DTMwMDExODIyMjU1NVowLTELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJvaWQx\n"
+        "DDAKBgNVBAMMA0FkYjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAK8E\n"
+        "2Ck9TfuKlz7wqWdMfknjZ1luFDp2IHxAUZzh/F6jeI2dOFGAjpeloSnGOE86FIaT\n"
+        "d1EvpyTh7nBwbrLZAA6XFZTo7Bl6BdNOQdqb2d2+cLEN0inFxqUIycevRtohUE1Y\n"
+        "FHM9fg442X1jOTWXjDZWeiqFWo95paAPhzm6pWqfJK1+YKfT1LsWZpYqJGGQE5pi\n"
+        "C3qOBYYgFpoXMxTYJNoZo3uOYEdM6upc8/vh15nMgIxX/ymJxEY5BHPpZPPWjXLg\n"
+        "BfzVaV9fUfv0JT4HQ4t2WvxC3cD/UsjWp2a6p454uUp2ENrANa+jRdRJepepg9D2\n"
+        "DKsx9L8zjc5Obqexrt0CAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8B\n"
+        "Af8EBAMCAYYwHQYDVR0OBBYEFDFW+8GTErwoZN5Uu9KyY4QdGYKpMA0GCSqGSIb3\n"
+        "DQEBCwUAA4IBAQBCDEn6SHXGlq5TU7J8cg1kRPd9bsJW+0hDuKSq0REXDkl0PcBf\n"
+        "fy282Agg9enKPPKmnpeQjM1dmnxdM8tT8LIUbMl779i3fn6v9HJVB+yG4gmRFThW\n"
+        "c+AGlBnrIT820cX/gU3h3R3FTahfsq+1rrSJkEgHyuC0HYeRyveSckBdaEOLvx0S\n"
+        "toun+32JJl5hWydpUUZhE9Mbb3KHBRM2YYZZU9JeJ08Apjl+3lRUeMAUwI5fkAAu\n"
+        "z/1SqnuGL96bd8P5ixdkA1+rF8FPhodGcq9mQOuUGP9g5HOXjaNoJYvwVRUdLeGh\n"
+        "cP/ReOTwQIzM1K5a83p8cX8AGGYmM7dQp7ec\n"
+        "-----END CERTIFICATE-----\n";
+
+static const std::string kTestRsa2048ServerPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCvBNgpPU37ipc+\n"
+        "8KlnTH5J42dZbhQ6diB8QFGc4fxeo3iNnThRgI6XpaEpxjhPOhSGk3dRL6ck4e5w\n"
+        "cG6y2QAOlxWU6OwZegXTTkHam9ndvnCxDdIpxcalCMnHr0baIVBNWBRzPX4OONl9\n"
+        "Yzk1l4w2VnoqhVqPeaWgD4c5uqVqnyStfmCn09S7FmaWKiRhkBOaYgt6jgWGIBaa\n"
+        "FzMU2CTaGaN7jmBHTOrqXPP74deZzICMV/8picRGOQRz6WTz1o1y4AX81WlfX1H7\n"
+        "9CU+B0OLdlr8Qt3A/1LI1qdmuqeOeLlKdhDawDWvo0XUSXqXqYPQ9gyrMfS/M43O\n"
+        "Tm6nsa7dAgMBAAECggEAFCS2bPdUKIgjbzLgtHW+hT+J2hD20rcHdyAp+dNH/2vI\n"
+        "yLfDJHJA4chGMRondKA704oDw2bSJxxlG9t83326lB35yxPhye7cM8fqgWrK8PVl\n"
+        "tU22FhO1ZgeJvb9OeXWNxKZyDW9oOOJ8eazNXVMuEo+dFj7B6l3MXQyHJPL2mJDm\n"
+        "u9ofFLdypX+gJncVO0oW0FNJnEUn2MMwHDNlo7gc4WdQuidPkuZItKRGcB8TTGF3\n"
+        "Ka1/2taYdTQ4Aq//Z84LlFvE0zD3T4c8LwYYzOzD4gGGTXvft7vSHzIun1S8YLRS\n"
+        "dEKXdVjtaFhgH3uUe4j+1b/vMvSHeoGBNX/G88GD+wKBgQDWUYVlMVqc9HD2IeYi\n"
+        "EfBcNwAJFJkh51yAl5QbUBgFYgFJVkkS/EDxEGFPvEmI3/pAeQFHFY13BI466EPs\n"
+        "o8Z8UUwWDp+Z1MFHHKQKnFakbsZbZlbqjJ9VJsqpezbpWhMHTOmcG0dmE7rf0lyM\n"
+        "eQv9slBB8qp2NEUs5Of7f2C2bwKBgQDRDq4nUuMQF1hbjM05tGKSIwkobmGsLspv\n"
+        "TMhkM7fq4RpbFHmbNgsFqMhcqYZ8gY6/scv5KCuAZ4yHUkbqwf5h+QCwrJ4uJeUJ\n"
+        "ZgJfHus2mmcNSo8FwSkNoojIQtzcbJav7bs2K9VTuertk/i7IJLApU4FOZZ5pghN\n"
+        "EXu0CZF1cwKBgDWFGhjRIF29tU/h20R60llU6s9Zs3wB+NmsALJpZ/ZAKS4VPB5f\n"
+        "nCAXBRYSYRKrTCU5kpYbzb4BBzuysPOxWmnFK4j+keCqfrGxd02nCQP7HdHJVr8v\n"
+        "6sIq88UrHeVcNxBFprjzHvtgxfQK5k22FMZ/9wbhAKyQFQ5HA5+MiaxFAoGAIcZZ\n"
+        "ZIkDninnYIMS9OursShv5lRO+15j3i9tgKLKZ+wOMgDQ1L6acUOfezj4PU1BHr8+\n"
+        "0PYocQpJreMhCfRlgLaV4fVBaPs+UZJld7CrF5tCYudUy/01ALrtlk0XGZWBktK5\n"
+        "mDrksC4tQkzRtonAq9cJD9cJ9IVaefkFH0UcdvkCgYBpZj50VLeGhnHHBnkJRlV1\n"
+        "fV+/P6PAq6RtqjA6O9Qdaoj5V3w2d63aQcQXQLJjH2BBmtCIy47r04rFvZpbCxP7\n"
+        "NH/OnK9NHpk2ucRTe8TAnVbvF/TZzPJoIxAO/D3OWaW6df4R8en8u6GYzWFglAyT\n"
+        "sydGT8yfWD1FYUWgfrVRbg==\n"
+        "-----END PRIVATE KEY-----\n";
+
+static const std::string kTestRsa2048ClientCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIDFzCCAf+gAwIBAgIBATANBgkqhkiG9w0BAQsFADAtMQswCQYDVQQGEwJVUzEQ\n"
+        "MA4GA1UECgwHQW5kcm9pZDEMMAoGA1UEAwwDQWRiMB4XDTIwMDEyMTIyMjU1NloX\n"
+        "DTMwMDExODIyMjU1NlowLTELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJvaWQx\n"
+        "DDAKBgNVBAMMA0FkYjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAI3a\n"
+        "EXh1S5FTbet7JVONswffRPaekdIK53cb8SnAbSO9X5OLA4zGwdkrBvDTsd96SKrp\n"
+        "JxmoNOE1DhbZh05KPlWAPkGKacjGWaz+S7biDOL0I6aaLbTlU/il1Ub9olPSBVUx\n"
+        "0nhdtEFgIOzddnP6/1KmyIIeRxS5lTKeg4avqUkZNXkz/wL1dHBFL7FNFf0SCcbo\n"
+        "tsub/deFbjZ27LTDN+SIBgFttTNqC5NTvoBAoMdyCOAgNYwaHO+fKiK3edfJieaw\n"
+        "7HD8qqmQxcpCtRlA8CUPj7GfR+WHiCJmlevhnkFXCo56R1BS0F4wuD4KPdSWt8gc\n"
+        "27ejH/9/z2cKo/6SLJMCAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8B\n"
+        "Af8EBAMCAYYwHQYDVR0OBBYEFO/Mr5ygqqpyU/EHM9v7RDvcqaOkMA0GCSqGSIb3\n"
+        "DQEBCwUAA4IBAQAH33KMouzF2DYbjg90KDrDQr4rq3WfNb6P743knxdUFuvb+40U\n"
+        "QjC2OJZHkSexH7wfG/y6ic7vfCfF4clNs3QvU1lEjOZC57St8Fk7mdNdsWLwxEMD\n"
+        "uePFz0dvclSxNUHyCVMqNxddzQYzxiDWQRmXWrUBliMduQqEQelcxW2yDtg8bj+s\n"
+        "aMpR1ra9scaD4jzIZIIxLoOS9zBMuNRbgP217sZrniyGMhzoI1pZ/izN4oXpyH7O\n"
+        "THuaCzzRT3ph2f8EgmHSodz3ttgSf2DHzi/Ez1xUkk7NOlgNtmsxEdrM47+cC5ae\n"
+        "fIf2V+1o1JW8J7D11RmRbNPh3vfisueB4f88\n"
+        "-----END CERTIFICATE-----\n";
+
+static const std::string kTestRsa2048ClientPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCN2hF4dUuRU23r\n"
+        "eyVTjbMH30T2npHSCud3G/EpwG0jvV+TiwOMxsHZKwbw07Hfekiq6ScZqDThNQ4W\n"
+        "2YdOSj5VgD5BimnIxlms/ku24gzi9COmmi205VP4pdVG/aJT0gVVMdJ4XbRBYCDs\n"
+        "3XZz+v9SpsiCHkcUuZUynoOGr6lJGTV5M/8C9XRwRS+xTRX9EgnG6LbLm/3XhW42\n"
+        "duy0wzfkiAYBbbUzaguTU76AQKDHcgjgIDWMGhzvnyoit3nXyYnmsOxw/KqpkMXK\n"
+        "QrUZQPAlD4+xn0flh4giZpXr4Z5BVwqOekdQUtBeMLg+Cj3UlrfIHNu3ox//f89n\n"
+        "CqP+kiyTAgMBAAECggEAAa64eP6ggCob1P3c73oayYPIbvRqiQdAFOrr7Vwu7zbr\n"
+        "z0rde+n6RU0mrpc+4NuzyPMtrOGQiatLbidJB5Cx3z8U00ovqbCl7PtcgorOhFKe\n"
+        "VEzihebCcYyQqbWQcKtpDMhOgBxRwFoXieJb6VGXfa96FAZalCWvXgOrTl7/BF2X\n"
+        "qMqIm9nJi+yS5tIO8VdOsOmrMWRH/b/ENUcef4WpLoxTXr0EEgyKWraeZ/hhXo1e\n"
+        "z29dZKqdr9wMsq11NPsRddwS94jnDkXTo+EQyWVTfB7gb6yyp07s8jysaDb21tVv\n"
+        "UXB9MRhDV1mOv0ncXfXZ4/+4A2UahmZaLDAVLaat4QKBgQDAVRredhGRGl2Nkic3\n"
+        "KvZCAfyxug788CgasBdEiouz19iCCwcgMIDwnq0s3/WM7h/laCamT2x38riYDnpq\n"
+        "rkYMfuVtU9CjEL9pTrdfwbIRhTwYNqADaPz2mXwQUhRXutE5TIdgxxC/a+ZTh0qN\n"
+        "S+vhTj/4hf0IZhMh5Nqj7IPExQKBgQC8zxEzhmSGjys0GuE6Wl6Doo2TpiR6vwvi\n"
+        "xPLU9lmIz5eca/Rd/eERioFQqeoIWDLzx52DXuz6rUoQhbJWz9hP3yqCwXD+pbNP\n"
+        "oDJqDDbCC4IMYEb0IK/PEPH+gIpnTjoFcW+ecKDFG7W5Lt05J8WsJsfOaJvMrOU+\n"
+        "dLXq3IgxdwKBgQC5RAFq0v6e8G+3hFaEHL0z3igkpt3zJf7rnj37hx2FMmDa+3Z0\n"
+        "umQp5B9af61PgL12xLmeMBmC/Wp1BlVDV/Yf6Uhk5Hyv5t0KuomHEtTNbbLyfAPs\n"
+        "5P/vJu/L5NS1oT4S3LX3MineyjgGs+bLbpub3z1dzutrYLADUSiPCK/xJQKBgBQt\n"
+        "nQ0Ao+Wtj1R2OvPdjJRM3wyUiPmFSWPm4HzaBx+T8AQLlYYmB9O0FbXlMtnJc0iS\n"
+        "YMcVcgYoVu4FG9YjSF7g3s4yljzgwJUV7c1fmMqMKE3iTDLy+1cJ3JLycdgwiArk\n"
+        "4KTyLHxkRbuQwpvFIF8RlfD9RQlOwQE3v+llwDhpAoGBAL6XG6Rp6mBoD2Ds5c9R\n"
+        "943yYgSUes3ji1SI9zFqeJtj8Ml/enuK1xu+8E/BxB0//+vgZsH6i3i8GFwygKey\n"
+        "CGJF8CbiHc3EJc3NQIIRXcni/CGacf0HwC6m+PGFDBIpA4H2iDpVvCSofxttQiq0\n"
+        "/Z7HXmXUvZHVyYi/QzX2Gahj\n"
+        "-----END PRIVATE KEY-----\n";
+
+struct ServerDeleter {
+    void operator()(PairingServerCtx* p) { pairing_server_destroy(p); }
+};
+using ServerPtr = std::unique_ptr<PairingServerCtx, ServerDeleter>;
+
+struct ResultWaiter {
+    std::mutex mutex_;
+    std::condition_variable cv_;
+    std::optional<bool> is_valid_;
+    PeerInfo peer_info_;
+
+    static void ResultCallback(const PeerInfo* peer_info, void* opaque) {
+        auto* p = reinterpret_cast<ResultWaiter*>(opaque);
+        {
+            std::unique_lock<std::mutex> lock(p->mutex_);
+            if (peer_info) {
+                memcpy(&(p->peer_info_), peer_info, sizeof(PeerInfo));
+            }
+            p->is_valid_ = (peer_info != nullptr);
+        }
+        p->cv_.notify_one();
+    }
+};
+
+class AdbPairingConnectionTest : public testing::Test {
+  protected:
+    virtual void SetUp() override {}
+
+    virtual void TearDown() override {}
+
+    void InitPairing(const std::vector<uint8_t>& server_pswd,
+                     const std::vector<uint8_t>& client_pswd) {
+        server_ = CreateServer(server_pswd);
+        client_ = CreateClient(client_pswd);
+    }
+
+    ServerPtr CreateServer(const std::vector<uint8_t>& pswd) {
+        return CreateServer(pswd, &server_info_, kTestRsa2048ServerCert, kTestRsa2048ServerPrivKey,
+                            0);
+    }
+
+    std::unique_ptr<PairingClient> CreateClient(const std::vector<uint8_t> pswd) {
+        std::vector<uint8_t> cert;
+        std::vector<uint8_t> key;
+        // Include the null-byte as well.
+        cert.assign(reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+                    reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()) +
+                            kTestRsa2048ClientCert.size() + 1);
+        key.assign(reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+                   reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()) +
+                           kTestRsa2048ClientPrivKey.size() + 1);
+        return PairingClient::Create(pswd, client_info_, cert, key);
+    }
+
+    static ServerPtr CreateServer(const std::vector<uint8_t>& pswd, const PeerInfo* peer_info,
+                                  const std::string_view cert, const std::string_view priv_key,
+                                  int port) {
+        return ServerPtr(pairing_server_new(
+                pswd.data(), pswd.size(), peer_info, reinterpret_cast<const uint8_t*>(cert.data()),
+                cert.size(), reinterpret_cast<const uint8_t*>(priv_key.data()), priv_key.size(),
+                port));
+    }
+
+    ServerPtr server_;
+    const PeerInfo server_info_ = {
+            .type = ADB_DEVICE_GUID,
+            .data = "my_server_info",
+    };
+    std::unique_ptr<PairingClient> client_;
+    const PeerInfo client_info_ = {
+            .type = ADB_RSA_PUB_KEY,
+            .data = "my_client_info",
+    };
+    std::string ip_addr_ = "127.0.0.1:";
+};
+
+TEST_F(AdbPairingConnectionTest, ServerCreation) {
+    // All parameters bad
+    ASSERT_DEATH({ auto server = CreateServer({}, nullptr, "", "", 0); }, "");
+    // Bad password
+    ASSERT_DEATH(
+            {
+                auto server = CreateServer({}, &server_info_, kTestRsa2048ServerCert,
+                                           kTestRsa2048ServerPrivKey, 0);
+            },
+            "");
+    // Bad peer_info
+    ASSERT_DEATH(
+            {
+                auto server = CreateServer({0x01}, nullptr, kTestRsa2048ServerCert,
+                                           kTestRsa2048ServerPrivKey, 0);
+            },
+            "");
+    // Bad certificate
+    ASSERT_DEATH(
+            {
+                auto server = CreateServer({0x01}, &server_info_, "", kTestRsa2048ServerPrivKey, 0);
+            },
+            "");
+    // Bad private key
+    ASSERT_DEATH(
+            { auto server = CreateServer({0x01}, &server_info_, kTestRsa2048ServerCert, "", 0); },
+            "");
+    // Valid params
+    auto server = CreateServer({0x01}, &server_info_, kTestRsa2048ServerCert,
+                               kTestRsa2048ServerPrivKey, 0);
+    EXPECT_NE(nullptr, server);
+}
+
+TEST_F(AdbPairingConnectionTest, ClientCreation) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    // Bad password
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        nullptr, pswd.size(), &client_info_,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+                        kTestRsa2048ClientCert.size(),
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+                        kTestRsa2048ClientPrivKey.size());
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        pswd.data(), 0, &client_info_,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+                        kTestRsa2048ClientCert.size(),
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+                        kTestRsa2048ClientPrivKey.size());
+            },
+            "");
+
+    // Bad peer_info
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        pswd.data(), pswd.size(), nullptr,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+                        kTestRsa2048ClientCert.size(),
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+                        kTestRsa2048ClientPrivKey.size());
+            },
+            "");
+
+    // Bad certificate
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        pswd.data(), pswd.size(), &client_info_, nullptr,
+                        kTestRsa2048ClientCert.size(),
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+                        kTestRsa2048ClientPrivKey.size());
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        pswd.data(), pswd.size(), &client_info_,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()), 0,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+                        kTestRsa2048ClientPrivKey.size());
+            },
+            "");
+
+    // Bad private key
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        pswd.data(), pswd.size(), &client_info_,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+                        kTestRsa2048ClientCert.size(), nullptr, kTestRsa2048ClientPrivKey.size());
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                pairing_connection_client_new(
+                        pswd.data(), pswd.size(), &client_info_,
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+                        kTestRsa2048ClientCert.size(),
+                        reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()), 0);
+            },
+            "");
+
+    // Valid params
+    auto client = pairing_connection_client_new(
+            pswd.data(), pswd.size(), &client_info_,
+            reinterpret_cast<const uint8_t*>(kTestRsa2048ClientCert.data()),
+            kTestRsa2048ClientCert.size(),
+            reinterpret_cast<const uint8_t*>(kTestRsa2048ClientPrivKey.data()),
+            kTestRsa2048ClientPrivKey.size());
+    EXPECT_NE(nullptr, client);
+}
+
+TEST_F(AdbPairingConnectionTest, SmokeValidPairing) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    InitPairing(pswd, pswd);
+
+    // Start the server
+    ResultWaiter server_waiter;
+    std::unique_lock<std::mutex> server_lock(server_waiter.mutex_);
+    auto port = pairing_server_start(server_.get(), server_waiter.ResultCallback, &server_waiter);
+    ASSERT_GT(port, 0);
+    ip_addr_ += std::to_string(port);
+
+    // Start the client
+    ResultWaiter client_waiter;
+    std::unique_lock<std::mutex> client_lock(client_waiter.mutex_);
+    ASSERT_TRUE(client_->Start(ip_addr_, client_waiter.ResultCallback, &client_waiter));
+    client_waiter.cv_.wait(client_lock, [&]() { return client_waiter.is_valid_.has_value(); });
+    ASSERT_TRUE(*(client_waiter.is_valid_));
+    ASSERT_EQ(strlen(reinterpret_cast<const char*>(client_waiter.peer_info_.data)),
+              strlen(reinterpret_cast<const char*>(server_info_.data)));
+    EXPECT_EQ(memcmp(client_waiter.peer_info_.data, server_info_.data, sizeof(server_info_.data)),
+              0);
+
+    // Kill server if the pairing failed, since server only shuts down when
+    // it gets a valid pairing.
+    if (!client_waiter.is_valid_) {
+        server_lock.unlock();
+        server_.reset();
+    } else {
+        server_waiter.cv_.wait(server_lock, [&]() { return server_waiter.is_valid_.has_value(); });
+        ASSERT_TRUE(*(server_waiter.is_valid_));
+        ASSERT_EQ(strlen(reinterpret_cast<const char*>(server_waiter.peer_info_.data)),
+                  strlen(reinterpret_cast<const char*>(client_info_.data)));
+        EXPECT_EQ(
+                memcmp(server_waiter.peer_info_.data, client_info_.data, sizeof(client_info_.data)),
+                0);
+    }
+}
+
+TEST_F(AdbPairingConnectionTest, CancelPairing) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    std::vector<uint8_t> pswd2{0x01, 0x03, 0x05, 0x06};
+    InitPairing(pswd, pswd2);
+
+    // Start the server
+    ResultWaiter server_waiter;
+    std::unique_lock<std::mutex> server_lock(server_waiter.mutex_);
+    auto port = pairing_server_start(server_.get(), server_waiter.ResultCallback, &server_waiter);
+    ASSERT_GT(port, 0);
+    ip_addr_ += std::to_string(port);
+
+    // Start the client. Client should fail to pair
+    ResultWaiter client_waiter;
+    std::unique_lock<std::mutex> client_lock(client_waiter.mutex_);
+    ASSERT_TRUE(client_->Start(ip_addr_, client_waiter.ResultCallback, &client_waiter));
+    client_waiter.cv_.wait(client_lock, [&]() { return client_waiter.is_valid_.has_value(); });
+    ASSERT_FALSE(*(client_waiter.is_valid_));
+
+    // Kill the server. We should still receive the callback with no valid
+    // pairing.
+    server_lock.unlock();
+    server_.reset();
+    server_lock.lock();
+    ASSERT_TRUE(server_waiter.is_valid_.has_value());
+    EXPECT_FALSE(*(server_waiter.is_valid_));
+}
+
+TEST_F(AdbPairingConnectionTest, MultipleClientsAllFail) {
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    std::vector<uint8_t> pswd2{0x01, 0x03, 0x05, 0x06};
+
+    // Start the server
+    auto server = CreateServer(pswd);
+    ResultWaiter server_waiter;
+    std::unique_lock<std::mutex> server_lock(server_waiter.mutex_);
+    auto port = pairing_server_start(server.get(), server_waiter.ResultCallback, &server_waiter);
+    ASSERT_GT(port, 0);
+    ip_addr_ += std::to_string(port);
+
+    // Start multiple clients, all with bad passwords
+    int test_num_clients = 5;
+    int num_clients_done = 0;
+    std::mutex global_clients_mutex;
+    std::unique_lock<std::mutex> global_clients_lock(global_clients_mutex);
+    std::condition_variable global_cv_;
+    for (int i = 0; i < test_num_clients; ++i) {
+        std::thread([&]() {
+            auto client = CreateClient(pswd2);
+            ResultWaiter client_waiter;
+            std::unique_lock<std::mutex> client_lock(client_waiter.mutex_);
+            ASSERT_TRUE(client->Start(ip_addr_, client_waiter.ResultCallback, &client_waiter));
+            client_waiter.cv_.wait(client_lock,
+                                   [&]() { return client_waiter.is_valid_.has_value(); });
+            ASSERT_FALSE(*(client_waiter.is_valid_));
+            {
+                std::lock_guard<std::mutex> global_lock(global_clients_mutex);
+                ++num_clients_done;
+            }
+            global_cv_.notify_one();
+        }).detach();
+    }
+
+    global_cv_.wait(global_clients_lock, [&]() { return num_clients_done == test_num_clients; });
+    server_lock.unlock();
+    server.reset();
+    server_lock.lock();
+    ASSERT_TRUE(server_waiter.is_valid_.has_value());
+    EXPECT_FALSE(*(server_waiter.is_valid_));
+}
+
+TEST_F(AdbPairingConnectionTest, MultipleClientsOnePass) {
+    // Send multiple clients with bad passwords, but send the last one with the
+    // correct password.
+    std::vector<uint8_t> pswd{0x01, 0x03, 0x05, 0x07};
+    std::vector<uint8_t> pswd2{0x01, 0x03, 0x05, 0x06};
+
+    // Start the server
+    auto server = CreateServer(pswd);
+    ResultWaiter server_waiter;
+    std::unique_lock<std::mutex> server_lock(server_waiter.mutex_);
+    auto port = pairing_server_start(server.get(), server_waiter.ResultCallback, &server_waiter);
+    ASSERT_GT(port, 0);
+    ip_addr_ += std::to_string(port);
+
+    // Start multiple clients, all with bad passwords
+    int test_num_clients = 5;
+    int num_clients_done = 0;
+    std::mutex global_clients_mutex;
+    std::unique_lock<std::mutex> global_clients_lock(global_clients_mutex);
+    std::condition_variable global_cv_;
+    for (int i = 0; i < test_num_clients; ++i) {
+        std::thread([&, i]() {
+            bool good_client = (i == (test_num_clients - 1));
+            auto client = CreateClient((good_client ? pswd : pswd2));
+            ResultWaiter client_waiter;
+            std::unique_lock<std::mutex> client_lock(client_waiter.mutex_);
+            ASSERT_TRUE(client->Start(ip_addr_, client_waiter.ResultCallback, &client_waiter));
+            client_waiter.cv_.wait(client_lock,
+                                   [&]() { return client_waiter.is_valid_.has_value(); });
+            if (good_client) {
+                ASSERT_TRUE(*(client_waiter.is_valid_));
+                ASSERT_EQ(strlen(reinterpret_cast<const char*>(client_waiter.peer_info_.data)),
+                          strlen(reinterpret_cast<const char*>(server_info_.data)));
+                EXPECT_EQ(memcmp(client_waiter.peer_info_.data, server_info_.data,
+                                 sizeof(server_info_.data)),
+                          0);
+            } else {
+                ASSERT_FALSE(*(client_waiter.is_valid_));
+            }
+            {
+                std::lock_guard<std::mutex> global_lock(global_clients_mutex);
+                ++num_clients_done;
+            }
+            global_cv_.notify_one();
+        }).detach();
+    }
+
+    global_cv_.wait(global_clients_lock, [&]() { return num_clients_done == test_num_clients; });
+    server_waiter.cv_.wait(server_lock, [&]() { return server_waiter.is_valid_.has_value(); });
+    ASSERT_TRUE(*(server_waiter.is_valid_));
+    ASSERT_EQ(strlen(reinterpret_cast<const char*>(server_waiter.peer_info_.data)),
+              strlen(reinterpret_cast<const char*>(client_info_.data)));
+    EXPECT_EQ(memcmp(server_waiter.peer_info_.data, client_info_.data, sizeof(client_info_.data)),
+              0);
+}
+
+}  // namespace pairing
+}  // namespace adb
diff --git a/adb/proto/Android.bp b/adb/proto/Android.bp
new file mode 100644
index 0000000..f7cba95
--- /dev/null
+++ b/adb/proto/Android.bp
@@ -0,0 +1,73 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_defaults {
+    name: "libadb_protos_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    proto: {
+        export_proto_headers: true,
+        type: "lite",
+    },
+    srcs: [
+        "adb_known_hosts.proto",
+        "key_type.proto",
+        "pairing.proto",
+    ],
+    target: {
+        windows: {
+            compile_multilib: "first",
+            enabled: true,
+        },
+    },
+
+    visibility: [
+        "//system/core/adb:__subpackages__",
+
+        // This needs to be visible to minadbd, even though it's removed via exclude_shared_libs.
+        "//bootable/recovery/minadbd:__subpackages__",
+    ],
+
+    stl: "libc++_static",
+
+    host_supported: true,
+    recovery_available: true,
+}
+
+cc_library {
+    name: "libadb_protos",
+    defaults: ["libadb_protos_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+        "test_com.android.adbd",
+    ],
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_protos_static",
+    defaults: ["libadb_protos_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+}
diff --git a/adb/proto/adb_known_hosts.proto b/adb/proto/adb_known_hosts.proto
new file mode 100644
index 0000000..85d1489
--- /dev/null
+++ b/adb/proto/adb_known_hosts.proto
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto3";
+
+option java_package = "com.android.server.adb.protos";
+option java_outer_classname = "AdbKnownHostsProto";
+
+package adb.proto;
+
+// Each known host
+message HostInfo {
+    string guid = 1;
+}
+
+// Protobuf definition for the adb_known_hosts.
+message AdbKnownHosts {
+    repeated HostInfo host_infos = 1;
+}
diff --git a/adb/proto/jarjar-rules.txt b/adb/proto/jarjar-rules.txt
new file mode 100644
index 0000000..4e40637
--- /dev/null
+++ b/adb/proto/jarjar-rules.txt
@@ -0,0 +1 @@
+rule com.google.protobuf.** com.android.framework.protobuf.@1
diff --git a/adb/proto/key_type.proto b/adb/proto/key_type.proto
new file mode 100644
index 0000000..ed451c5
--- /dev/null
+++ b/adb/proto/key_type.proto
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto3";
+
+option java_package = "com.android.server.adb.protos";
+option java_outer_classname = "KeyTypeProto";
+
+package adb.proto;
+
+enum KeyType {
+    RSA_2048 = 0;
+}
diff --git a/adb/proto/pairing.proto b/adb/proto/pairing.proto
new file mode 100644
index 0000000..b0be20e
--- /dev/null
+++ b/adb/proto/pairing.proto
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto3";
+
+option java_package = "com.android.server.adb.protos";
+option java_outer_classname = "PairingProto";
+
+package adb.proto;
+
+// The type of packets used in the pairing protocol
+message PairingPacket {
+    enum Type {
+        SPAKE2_MSG = 0;
+        PEER_INFO = 1;
+    }
+}
diff --git a/adb/protocol.txt b/adb/protocol.txt
index f4523c4..75700a4 100644
--- a/adb/protocol.txt
+++ b/adb/protocol.txt
@@ -79,6 +79,14 @@
 kind of unique ID (or empty), and banner is a human-readable version
 or identifier string.  The banner is used to transmit useful properties.
 
+--- STLS(type, version, "") --------------------------------------------
+
+Command constant: A_STLS
+
+The TLS message informs the recipient that the connection will be encrypted
+and will need to perform a TLS handshake. version is the current version of
+the protocol.
+
 
 --- AUTH(type, 0, "data") ----------------------------------------------
 
@@ -207,6 +215,7 @@
 #define A_OKAY 0x59414b4f
 #define A_CLSE 0x45534c43
 #define A_WRTE 0x45545257
+#define A_STLS 0x534C5453
 
 
 
diff --git a/adb/services.cpp b/adb/services.cpp
index 335ffc4..853d658 100644
--- a/adb/services.cpp
+++ b/adb/services.cpp
@@ -24,6 +24,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <cstring>
 #include <thread>
 
 #include <android-base/stringprintf.h>
@@ -34,6 +35,7 @@
 #include "adb_io.h"
 #include "adb_unique_fd.h"
 #include "adb_utils.h"
+#include "adb_wifi.h"
 #include "services.h"
 #include "socket_spec.h"
 #include "sysdeps.h"
@@ -100,7 +102,7 @@
     ConnectionState state;
 };
 
-static void wait_for_state(int fd, state_info* sinfo) {
+static void wait_for_state(unique_fd fd, state_info* sinfo) {
     D("wait_for_state %d", sinfo->state);
 
     while (true) {
@@ -122,7 +124,7 @@
         }
 
         if (!is_ambiguous) {
-            adb_pollfd pfd = {.fd = fd, .events = POLLIN};
+            adb_pollfd pfd = {.fd = fd.get(), .events = POLLIN};
             int rc = adb_poll(&pfd, 1, 100);
             if (rc < 0) {
                 SendFail(fd, error);
@@ -140,7 +142,6 @@
         }
     }
 
-    adb_close(fd);
     D("wait_for_state is done");
 }
 
@@ -194,6 +195,12 @@
     // Send response for emulator and device
     SendProtocolString(fd.get(), response);
 }
+
+static void pair_service(unique_fd fd, std::string host, std::string password) {
+    std::string response;
+    adb_wifi_pair_device(host, password, response);
+    SendProtocolString(fd.get(), response);
+}
 #endif
 
 #if ADB_HOST
@@ -203,7 +210,7 @@
         return create_device_tracker(false);
     } else if (name == "track-devices-l") {
         return create_device_tracker(true);
-    } else if (ConsumePrefix(&name, "wait-for-")) {
+    } else if (android::base::ConsumePrefix(&name, "wait-for-")) {
         std::shared_ptr<state_info> sinfo = std::make_shared<state_info>();
         if (sinfo == nullptr) {
             fprintf(stderr, "couldn't allocate state_info: %s", strerror(errno));
@@ -213,11 +220,11 @@
         sinfo->serial = serial;
         sinfo->transport_id = transport_id;
 
-        if (ConsumePrefix(&name, "local")) {
+        if (android::base::ConsumePrefix(&name, "local")) {
             sinfo->transport_type = kTransportLocal;
-        } else if (ConsumePrefix(&name, "usb")) {
+        } else if (android::base::ConsumePrefix(&name, "usb")) {
             sinfo->transport_type = kTransportUsb;
-        } else if (ConsumePrefix(&name, "any")) {
+        } else if (android::base::ConsumePrefix(&name, "any")) {
             sinfo->transport_type = kTransportAny;
         } else {
             return nullptr;
@@ -241,15 +248,24 @@
             return nullptr;
         }
 
-        unique_fd fd = create_service_thread("wait", [sinfo](int fd) {
-            wait_for_state(fd, sinfo.get());
-        });
+        unique_fd fd = create_service_thread(
+                "wait", [sinfo](unique_fd fd) { wait_for_state(std::move(fd), sinfo.get()); });
         return create_local_socket(std::move(fd));
-    } else if (ConsumePrefix(&name, "connect:")) {
+    } else if (android::base::ConsumePrefix(&name, "connect:")) {
         std::string host(name);
         unique_fd fd = create_service_thread(
                 "connect", std::bind(connect_service, std::placeholders::_1, host));
         return create_local_socket(std::move(fd));
+    } else if (android::base::ConsumePrefix(&name, "pair:")) {
+        const char* divider = strchr(name.data(), ':');
+        if (!divider) {
+            return nullptr;
+        }
+        std::string password(name.data(), divider);
+        std::string host(divider + 1);
+        unique_fd fd = create_service_thread(
+                "pair", std::bind(pair_service, std::placeholders::_1, host, password));
+        return create_local_socket(std::move(fd));
     }
     return nullptr;
 }
diff --git a/adb/shell_protocol.h b/adb/shell_protocol.h
index 2c82689..4aab813 100644
--- a/adb/shell_protocol.h
+++ b/adb/shell_protocol.h
@@ -21,6 +21,7 @@
 #include <android-base/macros.h>
 
 #include "adb.h"
+#include "adb_unique_fd.h"
 
 // Class to send and receive shell protocol packets.
 //
@@ -60,7 +61,7 @@
     // should be dynamically allocated on the heap instead.
     //
     // |fd| is an open file descriptor to be used to send or receive packets.
-    explicit ShellProtocol(int fd);
+    explicit ShellProtocol(borrowed_fd fd);
     virtual ~ShellProtocol();
 
     // Returns a pointer to the data buffer.
@@ -103,7 +104,7 @@
         kHeaderSize = sizeof(Id) + sizeof(length_t)
     };
 
-    int fd_;
+    borrowed_fd fd_;
     char buffer_[kBufferSize];
     size_t data_length_ = 0, bytes_left_ = 0;
 
diff --git a/adb/shell_service_protocol.cpp b/adb/shell_service_protocol.cpp
index 13b66ec..95afaff 100644
--- a/adb/shell_service_protocol.cpp
+++ b/adb/shell_service_protocol.cpp
@@ -22,7 +22,7 @@
 
 #include "adb_io.h"
 
-ShellProtocol::ShellProtocol(int fd) : fd_(fd) {
+ShellProtocol::ShellProtocol(borrowed_fd fd) : fd_(fd) {
     buffer_[0] = kIdInvalid;
 }
 
diff --git a/adb/socket.h b/adb/socket.h
index b8c559a..4276851 100644
--- a/adb/socket.h
+++ b/adb/socket.h
@@ -24,7 +24,7 @@
 #include <string>
 
 #include "adb_unique_fd.h"
-#include "fdevent.h"
+#include "fdevent/fdevent.h"
 #include "types.h"
 
 class atransport;
diff --git a/adb/socket_spec.cpp b/adb/socket_spec.cpp
index de4fff9..d17036c 100644
--- a/adb/socket_spec.cpp
+++ b/adb/socket_spec.cpp
@@ -16,6 +16,7 @@
 
 #include "socket_spec.h"
 
+#include <limits>
 #include <string>
 #include <string_view>
 #include <unordered_map>
@@ -28,10 +29,12 @@
 #include <cutils/sockets.h>
 
 #include "adb.h"
+#include "adb_utils.h"
 #include "sysdeps.h"
 
 using namespace std::string_literals;
 
+using android::base::ConsumePrefix;
 using android::base::StringPrintf;
 
 #if defined(__linux__)
@@ -93,7 +96,7 @@
         }
     } else {
         std::string addr(spec.substr(4));
-        port_value = -1;
+        port_value = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
 
         // FIXME: ParseNetAddress rejects port 0. This currently doesn't hurt, because listening
         //        on an address that isn't 'localhost' is unsupported.
@@ -119,6 +122,41 @@
     return true;
 }
 
+int get_host_socket_spec_port(std::string_view spec, std::string* error) {
+    int port;
+    if (spec.starts_with("tcp:")) {
+        if (!parse_tcp_socket_spec(spec, nullptr, &port, nullptr, error)) {
+            return -1;
+        }
+    } else if (spec.starts_with("vsock:")) {
+#if ADB_LINUX
+        std::string spec_str(spec);
+        std::vector<std::string> fragments = android::base::Split(spec_str, ":");
+        if (fragments.size() != 2) {
+            *error = "given vsock server socket string was invalid";
+            return -1;
+        }
+        if (!android::base::ParseInt(fragments[1], &port)) {
+            *error = "could not parse vsock port";
+            errno = EINVAL;
+            return -1;
+        }
+        if (port < 0) {
+            *error = "vsock port was negative.";
+            errno = EINVAL;
+            return -1;
+        }
+#else   // ADB_LINUX
+        *error = "vsock is only supported on linux";
+        return -1;
+#endif  // ADB_LINUX
+    } else {
+        *error = "given socket spec string was invalid";
+        return -1;
+    }
+    return port;
+}
+
 static bool tcp_host_is_local(std::string_view hostname) {
     // FIXME
     return hostname.empty() || hostname == "localhost";
@@ -131,7 +169,7 @@
             return true;
         }
     }
-    return spec.starts_with("tcp:");
+    return spec.starts_with("tcp:") || spec.starts_with("acceptfd:");
 }
 
 bool is_local_socket_spec(std::string_view spec) {
@@ -235,6 +273,9 @@
         *error = "vsock is only supported on linux";
         return false;
 #endif  // ADB_LINUX
+    } else if (address.starts_with("acceptfd:")) {
+        *error = "cannot connect to acceptfd";
+        return false;
     }
 
     for (const auto& it : kLocalSocketTypes) {
@@ -248,6 +289,14 @@
 
             fd->reset(network_local_client(&address[prefix.length()], it.second.socket_namespace,
                                            SOCK_STREAM, error));
+
+            if (fd->get() < 0) {
+                *error =
+                        android::base::StringPrintf("could not connect to %s address '%s'",
+                                                    it.first.c_str(), std::string(address).c_str());
+                return false;
+            }
+
             if (serial) {
                 *serial = address;
             }
@@ -269,10 +318,16 @@
         }
 
         int result;
+#if ADB_HOST
         if (hostname.empty() && gListenAll) {
+#else
+        if (hostname.empty()) {
+#endif
             result = network_inaddr_any_server(port, SOCK_STREAM, error);
         } else if (tcp_host_is_local(hostname)) {
-            result = network_loopback_server(port, SOCK_STREAM, error);
+            result = network_loopback_server(port, SOCK_STREAM, error, true);
+        } else if (hostname == "::1") {
+            result = network_loopback_server(port, SOCK_STREAM, error, false);
         } else {
             // TODO: Implement me.
             *error = "listening on specified hostname currently unsupported";
@@ -314,14 +369,14 @@
         addr.svm_port = port == 0 ? VMADDR_PORT_ANY : port;
         addr.svm_cid = VMADDR_CID_ANY;
         socklen_t addr_len = sizeof(addr);
-        if (bind(serverfd, reinterpret_cast<struct sockaddr*>(&addr), addr_len)) {
+        if (bind(serverfd.get(), reinterpret_cast<struct sockaddr*>(&addr), addr_len)) {
             return -1;
         }
-        if (listen(serverfd, 4)) {
+        if (listen(serverfd.get(), 4)) {
             return -1;
         }
         if (serverfd >= 0 && resolved_port) {
-            if (getsockname(serverfd, reinterpret_cast<sockaddr*>(&addr), &addr_len) == 0) {
+            if (getsockname(serverfd.get(), reinterpret_cast<sockaddr*>(&addr), &addr_len) == 0) {
                 *resolved_port = addr.svm_port;
             } else {
                 return -1;
@@ -332,6 +387,46 @@
         *error = "vsock is only supported on linux";
         return -1;
 #endif  // ADB_LINUX
+    } else if (ConsumePrefix(&spec, "acceptfd:")) {
+#if ADB_WINDOWS
+        *error = "socket activation not supported under Windows";
+        return -1;
+#else
+        // We inherited the socket from some kind of launcher. It's already bound and
+        // listening. Return a copy of the FD instead of the FD itself so we implement the
+        // normal "listen" contract and can succeed more than once.
+        unsigned int fd_u;
+        if (!ParseUint(&fd_u, spec) || fd_u > std::numeric_limits<int>::max()) {
+            *error = "invalid fd";
+            return -1;
+        }
+        int fd = static_cast<int>(fd_u);
+        int flags = get_fd_flags(fd);
+        if (flags < 0) {
+            *error = android::base::StringPrintf("could not get flags of inherited fd %d: '%s'", fd,
+                                                 strerror(errno));
+            return -1;
+        }
+        if (flags & FD_CLOEXEC) {
+            *error = android::base::StringPrintf("fd %d was not inherited from parent", fd);
+            return -1;
+        }
+
+        int dummy_sock_type;
+        socklen_t dummy_sock_type_size = sizeof(dummy_sock_type);
+        if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &dummy_sock_type, &dummy_sock_type_size)) {
+            *error = android::base::StringPrintf("fd %d does not refer to a socket", fd);
+            return -1;
+        }
+
+        int new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
+        if (new_fd < 0) {
+            *error = android::base::StringPrintf("could not dup inherited fd %d: '%s'", fd,
+                                                 strerror(errno));
+            return -1;
+        }
+        return new_fd;
+#endif
     }
 
     for (const auto& it : kLocalSocketTypes) {
diff --git a/adb/socket_spec.h b/adb/socket_spec.h
index 7cc2fac..94719c8 100644
--- a/adb/socket_spec.h
+++ b/adb/socket_spec.h
@@ -31,3 +31,5 @@
 
 bool parse_tcp_socket_spec(std::string_view spec, std::string* hostname, int* port,
                            std::string* serial, std::string* error);
+
+int get_host_socket_spec_port(std::string_view spec, std::string* error);
diff --git a/adb/socket_spec_test.cpp b/adb/socket_spec_test.cpp
index f5ec0f1..e9d5270 100644
--- a/adb/socket_spec_test.cpp
+++ b/adb/socket_spec_test.cpp
@@ -18,40 +18,137 @@
 
 #include <string>
 
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
 #include <gtest/gtest.h>
 
-TEST(socket_spec, parse_tcp_socket_spec) {
+TEST(socket_spec, parse_tcp_socket_spec_just_port) {
     std::string hostname, error, serial;
     int port;
     EXPECT_TRUE(parse_tcp_socket_spec("tcp:5037", &hostname, &port, &serial, &error));
     EXPECT_EQ("", hostname);
     EXPECT_EQ(5037, port);
     EXPECT_EQ("", serial);
+}
 
-    // Bad ports:
+TEST(socket_spec, parse_tcp_socket_spec_bad_ports) {
+    std::string hostname, error, serial;
+    int port;
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:", &hostname, &port, &serial, &error));
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:-1", &hostname, &port, &serial, &error));
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:65536", &hostname, &port, &serial, &error));
+}
 
+TEST(socket_spec, parse_tcp_socket_spec_host_and_port) {
+    std::string hostname, error, serial;
+    int port;
     EXPECT_TRUE(parse_tcp_socket_spec("tcp:localhost:1234", &hostname, &port, &serial, &error));
     EXPECT_EQ("localhost", hostname);
     EXPECT_EQ(1234, port);
     EXPECT_EQ("localhost:1234", serial);
+}
 
-    EXPECT_FALSE(parse_tcp_socket_spec("tcp:localhost", &hostname, &port, &serial, &error));
+TEST(socket_spec, parse_tcp_socket_spec_host_no_port) {
+    std::string hostname, error, serial;
+    int port;
+    EXPECT_TRUE(parse_tcp_socket_spec("tcp:localhost", &hostname, &port, &serial, &error));
+    EXPECT_EQ("localhost", hostname);
+    EXPECT_EQ(5555, port);
+    EXPECT_EQ("localhost:5555", serial);
+}
+
+TEST(socket_spec, parse_tcp_socket_spec_host_bad_ports) {
+    std::string hostname, error, serial;
+    int port;
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:localhost:", &hostname, &port, &serial, &error));
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:localhost:-1", &hostname, &port, &serial, &error));
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:localhost:65536", &hostname, &port, &serial, &error));
+}
 
-    // IPv6:
+TEST(socket_spec, parse_tcp_socket_spec_ipv6_and_port) {
+    std::string hostname, error, serial;
+    int port;
     EXPECT_TRUE(parse_tcp_socket_spec("tcp:[::1]:1234", &hostname, &port, &serial, &error));
     EXPECT_EQ("::1", hostname);
     EXPECT_EQ(1234, port);
     EXPECT_EQ("[::1]:1234", serial);
+}
 
+TEST(socket_spec, parse_tcp_socket_spec_ipv6_no_port) {
+    std::string hostname, error, serial;
+    int port;
+    EXPECT_TRUE(parse_tcp_socket_spec("tcp:::1", &hostname, &port, &serial, &error));
+    EXPECT_EQ("::1", hostname);
+    EXPECT_EQ(5555, port);
+    EXPECT_EQ("[::1]:5555", serial);
+}
+
+TEST(socket_spec, parse_tcp_socket_spec_ipv6_bad_ports) {
+    std::string hostname, error, serial;
+    int port;
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:[::1]", &hostname, &port, &serial, &error));
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:[::1]:", &hostname, &port, &serial, &error));
     EXPECT_FALSE(parse_tcp_socket_spec("tcp:[::1]:-1", &hostname, &port, &serial, &error));
-    EXPECT_FALSE(parse_tcp_socket_spec("tcp:::1", &hostname, &port, &serial, &error));
-    EXPECT_FALSE(parse_tcp_socket_spec("tcp:::1:1234", &hostname, &port, &serial, &error));
+}
+
+TEST(socket_spec, get_host_socket_spec_port) {
+    std::string error;
+    EXPECT_EQ(5555, get_host_socket_spec_port("tcp:5555", &error));
+    EXPECT_EQ(5555, get_host_socket_spec_port("tcp:localhost:5555", &error));
+    EXPECT_EQ(5555, get_host_socket_spec_port("tcp:[::1]:5555", &error));
+    EXPECT_EQ(5555, get_host_socket_spec_port("vsock:5555", &error));
+}
+
+TEST(socket_spec, get_host_socket_spec_port_no_port) {
+    std::string error;
+    EXPECT_EQ(5555, get_host_socket_spec_port("tcp:localhost", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("vsock:localhost", &error));
+}
+
+TEST(socket_spec, get_host_socket_spec_port_bad_ports) {
+    std::string error;
+    EXPECT_EQ(-1, get_host_socket_spec_port("tcp:65536", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("tcp:-5", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("vsock:-5", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("vsock:5:5555", &error));
+}
+
+TEST(socket_spec, get_host_socket_spec_port_bad_string) {
+    std::string error;
+    EXPECT_EQ(-1, get_host_socket_spec_port("tcpz:5555", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("vsockz:5555", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("abcd:5555", &error));
+    EXPECT_EQ(-1, get_host_socket_spec_port("abcd", &error));
+}
+
+TEST(socket_spec, socket_spec_listen_connect_tcp) {
+    std::string error, serial;
+    int port;
+    unique_fd server_fd, client_fd;
+    EXPECT_FALSE(socket_spec_connect(&client_fd, "tcp:localhost:7777", &port, &serial, &error));
+    server_fd.reset(socket_spec_listen("tcp:7777", &error, &port));
+    EXPECT_NE(server_fd.get(), -1);
+    EXPECT_TRUE(socket_spec_connect(&client_fd, "tcp:localhost:7777", &port, &serial, &error));
+    EXPECT_NE(client_fd.get(), -1);
+}
+
+TEST(socket_spec, socket_spec_listen_connect_localfilesystem) {
+    std::string error, serial;
+    int port;
+    unique_fd server_fd, client_fd;
+    TemporaryDir sock_dir;
+
+    // Only run this test if the created directory is writable.
+    int result = access(sock_dir.path, W_OK);
+    if (result == 0) {
+        std::string sock_addr =
+                android::base::StringPrintf("localfilesystem:%s/af_unix_socket", sock_dir.path);
+        EXPECT_FALSE(socket_spec_connect(&client_fd, sock_addr, &port, &serial, &error));
+        server_fd.reset(socket_spec_listen(sock_addr, &error, &port));
+        EXPECT_NE(server_fd.get(), -1);
+        EXPECT_TRUE(socket_spec_connect(&client_fd, sock_addr, &port, &serial, &error));
+        EXPECT_NE(client_fd.get(), -1);
+    }
 }
diff --git a/adb/socket_test.cpp b/adb/socket_test.cpp
index 5e28f76..1601ff0 100644
--- a/adb/socket_test.cpp
+++ b/adb/socket_test.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "fdevent.h"
+#include "fdevent/fdevent.h"
 
 #include <gtest/gtest.h>
 
@@ -29,7 +29,7 @@
 
 #include "adb.h"
 #include "adb_io.h"
-#include "fdevent_test.h"
+#include "fdevent/fdevent_test.h"
 #include "socket.h"
 #include "sysdeps.h"
 #include "sysdeps/chrono.h"
diff --git a/adb/sockets.cpp b/adb/sockets.cpp
index 8a2bf9a..423af67 100644
--- a/adb/sockets.cpp
+++ b/adb/sockets.cpp
@@ -31,6 +31,8 @@
 #include <string>
 #include <vector>
 
+#include <android-base/strings.h>
+
 #if !ADB_HOST
 #include <android-base/properties.h>
 #include <log/log_properties.h>
@@ -123,8 +125,7 @@
         if (rc > 0 && static_cast<size_t>(rc) == s->packet_queue.size()) {
             s->packet_queue.clear();
         } else if (rc > 0) {
-            // TODO: Implement a faster drop_front?
-            s->packet_queue.take_front(rc);
+            s->packet_queue.drop_front(rc);
             fdevent_add(s->fde, FDE_WRITE);
             return SocketFlushResult::TryAgain;
         } else if (rc == -1 && errno == EAGAIN) {
@@ -624,7 +625,8 @@
         return true;
     };
 
-    static constexpr std::string_view prefixes[] = {"usb:", "product:", "model:", "device:"};
+    static constexpr std::string_view prefixes[] = {
+            "usb:", "product:", "model:", "device:", "localfilesystem:"};
     for (std::string_view prefix : prefixes) {
         if (command.starts_with(prefix)) {
             consume(prefix.size());
@@ -755,26 +757,28 @@
 
 #if ADB_HOST
     service = std::string_view(s->smart_socket_data).substr(4);
-    if (ConsumePrefix(&service, "host-serial:")) {
+
+    // TODO: These should be handled in handle_host_request.
+    if (android::base::ConsumePrefix(&service, "host-serial:")) {
         // serial number should follow "host:" and could be a host:port string.
         if (!internal::parse_host_service(&serial, &service, service)) {
             LOG(ERROR) << "SS(" << s->id << "): failed to parse host service: " << service;
             goto fail;
         }
-    } else if (ConsumePrefix(&service, "host-transport-id:")) {
+    } else if (android::base::ConsumePrefix(&service, "host-transport-id:")) {
         if (!ParseUint(&transport_id, service, &service)) {
             LOG(ERROR) << "SS(" << s->id << "): failed to parse host transport id: " << service;
             return -1;
         }
-        if (!ConsumePrefix(&service, ":")) {
+        if (!android::base::ConsumePrefix(&service, ":")) {
             LOG(ERROR) << "SS(" << s->id << "): host-transport-id without command";
             return -1;
         }
-    } else if (ConsumePrefix(&service, "host-usb:")) {
+    } else if (android::base::ConsumePrefix(&service, "host-usb:")) {
         type = kTransportUsb;
-    } else if (ConsumePrefix(&service, "host-local:")) {
+    } else if (android::base::ConsumePrefix(&service, "host-local:")) {
         type = kTransportLocal;
-    } else if (ConsumePrefix(&service, "host:")) {
+    } else if (android::base::ConsumePrefix(&service, "host:")) {
         type = kTransportAny;
     } else {
         service = std::string_view{};
diff --git a/adb/sysdeps.h b/adb/sysdeps.h
index 15247e7..1eed0d2 100644
--- a/adb/sysdeps.h
+++ b/adb/sysdeps.h
@@ -14,11 +14,11 @@
  * limitations under the License.
  */
 
+#pragma once
+
 /* this file contains system-dependent definitions used by ADB
  * they're related to threads, sockets and file descriptors
  */
-#ifndef _ADB_SYSDEPS_H
-#define _ADB_SYSDEPS_H
 
 #ifdef __CYGWIN__
 #  undef _WIN32
@@ -33,13 +33,21 @@
 // Include this before open/close/unlink are defined as macros below.
 #include <android-base/errors.h>
 #include <android-base/macros.h>
+#include <android-base/off64_t.h>
 #include <android-base/unique_fd.h>
 #include <android-base/utf8.h>
 
+#include "adb_unique_fd.h"
 #include "sysdeps/errno.h"
 #include "sysdeps/network.h"
 #include "sysdeps/stat.h"
 
+#if defined(__APPLE__)
+static inline void* mempcpy(void* dst, const void* src, size_t n) {
+    return static_cast<char*>(memcpy(dst, src, n)) + n;
+}
+#endif
+
 #ifdef _WIN32
 
 // Clang-only nullability specifiers
@@ -63,79 +71,87 @@
 #include <memory>   // unique_ptr
 #include <string>
 
-#include "fdevent.h"
-
 #define OS_PATH_SEPARATORS "\\/"
 #define OS_PATH_SEPARATOR '\\'
 #define OS_PATH_SEPARATOR_STR "\\"
 #define ENV_PATH_SEPARATOR_STR ";"
 
-static __inline__ bool adb_is_separator(char c) {
+static inline bool adb_is_separator(char c) {
     return c == '\\' || c == '/';
 }
 
 extern int adb_thread_setname(const std::string& name);
 
-static __inline__ void  close_on_exec(int  fd)
-{
+static inline void close_on_exec(borrowed_fd fd) {
     /* nothing really */
 }
 
-extern int  adb_unlink(const char*  path);
-#undef  unlink
-#define unlink  ___xxx_unlink
+extern int adb_unlink(const char* path);
+#undef unlink
+#define unlink ___xxx_unlink
 
 extern int adb_mkdir(const std::string& path, int mode);
-#undef   mkdir
-#define  mkdir  ___xxx_mkdir
+#undef mkdir
+#define mkdir ___xxx_mkdir
+
+extern int adb_rename(const char* oldpath, const char* newpath);
 
 // See the comments for the !defined(_WIN32) versions of adb_*().
 extern int adb_open(const char* path, int options);
 extern int adb_creat(const char* path, int mode);
-extern int adb_read(int fd, void* buf, int len);
-extern int adb_write(int fd, const void* buf, int len);
-extern int64_t adb_lseek(int fd, int64_t pos, int where);
-extern int adb_shutdown(int fd, int direction = SHUT_RDWR);
+extern int adb_read(borrowed_fd fd, void* buf, int len);
+extern int adb_pread(borrowed_fd fd, void* buf, int len, off64_t offset);
+extern int adb_write(borrowed_fd fd, const void* buf, int len);
+extern int adb_pwrite(borrowed_fd fd, const void* buf, int len, off64_t offset);
+extern int64_t adb_lseek(borrowed_fd fd, int64_t pos, int where);
+extern int adb_shutdown(borrowed_fd fd, int direction = SHUT_RDWR);
 extern int adb_close(int fd);
 extern int adb_register_socket(SOCKET s);
+extern HANDLE adb_get_os_handle(borrowed_fd fd);
+
+extern int adb_gethostname(char* name, size_t len);
+extern int adb_getlogin_r(char* buf, size_t bufsize);
 
 // See the comments for the !defined(_WIN32) version of unix_close().
-static __inline__ int  unix_close(int fd)
-{
+static inline int unix_close(int fd) {
     return close(fd);
 }
-#undef   close
-#define  close   ____xxx_close
+#undef close
+#define close ____xxx_close
 
 // Like unix_read(), but may return EINTR.
-extern int  unix_read_interruptible(int  fd, void*  buf, size_t  len);
+extern int unix_read_interruptible(borrowed_fd fd, void* buf, size_t len);
 
 // See the comments for the !defined(_WIN32) version of unix_read().
-static __inline__ int unix_read(int fd, void* buf, size_t len) {
+static inline int unix_read(borrowed_fd fd, void* buf, size_t len) {
     return TEMP_FAILURE_RETRY(unix_read_interruptible(fd, buf, len));
 }
 
 #undef   read
 #define  read  ___xxx_read
 
+#undef pread
+#define pread ___xxx_pread
+
 // See the comments for the !defined(_WIN32) version of unix_write().
-static __inline__  int  unix_write(int  fd, const void*  buf, size_t  len)
-{
-    return write(fd, buf, len);
+static inline int unix_write(borrowed_fd fd, const void* buf, size_t len) {
+    return write(fd.get(), buf, len);
 }
 #undef   write
 #define  write  ___xxx_write
 
+#undef pwrite
+#define pwrite ___xxx_pwrite
+
 // See the comments for the !defined(_WIN32) version of unix_lseek().
-static __inline__ int unix_lseek(int fd, int pos, int where) {
-    return lseek(fd, pos, where);
+static inline int unix_lseek(borrowed_fd fd, int pos, int where) {
+    return lseek(fd.get(), pos, where);
 }
 #undef lseek
 #define lseek ___xxx_lseek
 
 // See the comments for the !defined(_WIN32) version of adb_open_mode().
-static __inline__ int  adb_open_mode(const char* path, int options, int mode)
-{
+static inline int adb_open_mode(const char* path, int options, int mode) {
     return adb_open(path, options);
 }
 
@@ -152,7 +168,7 @@
 // with |fd| must have GENERIC_READ access (which console FDs have by default).
 // Returns 1 if |fd| is a console FD, 0 otherwise. The value of errno after
 // calling this function is unreliable and should not be used.
-int unix_isatty(int fd);
+int unix_isatty(borrowed_fd fd);
 #define  isatty  ___xxx_isatty
 
 int network_inaddr_any_server(int port, int type, std::string* error);
@@ -168,20 +184,21 @@
 int network_connect(const std::string& host, int port, int type, int timeout,
                     std::string* error);
 
-extern int  adb_socket_accept(int  serverfd, struct sockaddr*  addr, socklen_t  *addrlen);
+extern int adb_socket_accept(borrowed_fd serverfd, struct sockaddr* addr, socklen_t* addrlen);
 
 #undef   accept
 #define  accept  ___xxx_accept
 
 // Returns the local port number of a bound socket, or -1 on failure.
-int adb_socket_get_local_port(int fd);
+int adb_socket_get_local_port(borrowed_fd fd);
 
-extern int  adb_setsockopt(int  fd, int  level, int  optname, const void*  optval, socklen_t  optlen);
+extern int adb_setsockopt(borrowed_fd fd, int level, int optname, const void* optval,
+                          socklen_t optlen);
 
 #undef   setsockopt
 #define  setsockopt  ___xxx_setsockopt
 
-extern int  adb_socketpair( int  sv[2] );
+extern int adb_socketpair(int sv[2]);
 
 struct adb_pollfd {
     int fd;
@@ -191,7 +208,7 @@
 extern int adb_poll(adb_pollfd* fds, size_t nfds, int timeout);
 #define poll ___xxx_poll
 
-static __inline__ int adb_is_absolute_host_path(const char* path) {
+static inline int adb_is_absolute_host_path(const char* path) {
     return isalpha(path[0]) && path[1] == ':' && path[2] == '\\';
 }
 
@@ -214,8 +231,7 @@
 extern int adb_fputc(int ch, FILE* stream);
 extern int adb_putchar(int ch);
 extern int adb_puts(const char* buf);
-extern size_t adb_fwrite(const void* ptr, size_t size, size_t nmemb,
-                         FILE* stream);
+extern size_t adb_fwrite(const void* ptr, size_t size, size_t nmemb, FILE* stream);
 
 extern FILE* adb_fopen(const char* f, const char* m);
 
@@ -262,6 +278,42 @@
 
 #define getcwd adb_getcwd
 
+// A very simple wrapper over a launched child process
+class Process {
+  public:
+    constexpr explicit Process(HANDLE h = nullptr) : h_(h) {}
+    constexpr Process(Process&& other) : h_(std::exchange(other.h_, nullptr)) {}
+    ~Process() { close(); }
+    constexpr explicit operator bool() const { return h_ != nullptr; }
+
+    void wait() {
+        if (*this) {
+            ::WaitForSingleObject(h_, INFINITE);
+            close();
+        }
+    }
+    void kill() {
+        if (*this) {
+            ::TerminateProcess(h_, -1);
+        }
+    }
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(Process);
+
+    void close() {
+        if (*this) {
+            ::CloseHandle(h_);
+            h_ = nullptr;
+        }
+    }
+
+    HANDLE h_;
+};
+
+Process adb_launch_process(std::string_view executable, std::vector<std::string> args,
+                           std::initializer_list<int> fds_to_inherit = {});
+
 // Helper class to convert UTF-16 argv from wmain() to UTF-8 args that can be
 // passed to main().
 class NarrowArgs {
@@ -340,13 +392,19 @@
 #define OS_PATH_SEPARATOR_STR "/"
 #define ENV_PATH_SEPARATOR_STR ":"
 
-static __inline__ bool adb_is_separator(char c) {
+static inline bool adb_is_separator(char c) {
     return c == '/';
 }
 
-static __inline__ void  close_on_exec(int  fd)
-{
-    fcntl( fd, F_SETFD, FD_CLOEXEC );
+static inline int get_fd_flags(borrowed_fd fd) {
+    return fcntl(fd.get(), F_GETFD);
+}
+
+static inline void close_on_exec(borrowed_fd fd) {
+    int flags = get_fd_flags(fd);
+    if (flags >= 0 && (flags & FD_CLOEXEC) == 0) {
+        fcntl(fd.get(), F_SETFD, flags | FD_CLOEXEC);
+    }
 }
 
 // Open a file and return a file descriptor that may be used with unix_read(),
@@ -358,7 +416,7 @@
 // by unix_read(), unix_write(), unix_close()). Also, the C Runtime has
 // configurable CR/LF translation which defaults to text mode, but is settable
 // with _setmode().
-static __inline__ int unix_open(std::string_view path, int options, ...) {
+static inline int unix_open(std::string_view path, int options, ...) {
     std::string zero_terminated(path.begin(), path.end());
     if ((options & O_CREAT) == 0) {
         return TEMP_FAILURE_RETRY(open(zero_terminated.c_str(), options));
@@ -374,12 +432,10 @@
 
 // Similar to the two-argument adb_open(), but takes a mode parameter for file
 // creation. See adb_open() for more info.
-static __inline__ int  adb_open_mode( const char*  pathname, int  options, int  mode )
-{
-    return TEMP_FAILURE_RETRY( open( pathname, options, mode ) );
+static inline int adb_open_mode(const char* pathname, int options, int mode) {
+    return TEMP_FAILURE_RETRY(open(pathname, options, mode));
 }
 
-
 // Open a file and return a file descriptor that may be used with adb_read(),
 // adb_write(), adb_close(), but not unix_read(), unix_write(), unix_close().
 //
@@ -387,105 +443,127 @@
 // sysdeps_win32.cpp) uses Windows native file I/O and bypasses the C Runtime
 // and its CR/LF translation. The returned file descriptor should be used with
 // adb_read(), adb_write(), adb_close(), etc.
-static __inline__ int  adb_open( const char*  pathname, int  options )
-{
-    int  fd = TEMP_FAILURE_RETRY( open( pathname, options ) );
-    if (fd < 0)
-        return -1;
-    close_on_exec( fd );
+static inline int adb_open(const char* pathname, int options) {
+    int fd = TEMP_FAILURE_RETRY(open(pathname, options));
+    if (fd < 0) return -1;
+    close_on_exec(fd);
     return fd;
 }
-#undef   open
-#define  open    ___xxx_open
+#undef open
+#define open ___xxx_open
 
-static __inline__ int adb_shutdown(int fd, int direction = SHUT_RDWR) {
-    return shutdown(fd, direction);
+static inline int adb_shutdown(borrowed_fd fd, int direction = SHUT_RDWR) {
+    return shutdown(fd.get(), direction);
 }
 
-#undef   shutdown
-#define  shutdown   ____xxx_shutdown
+#undef shutdown
+#define shutdown ____xxx_shutdown
 
 // Closes a file descriptor that came from adb_open() or adb_open_mode(), but
 // not designed to take a file descriptor from unix_open(). See the comments
 // for adb_open() for more info.
-__inline__ int adb_close(int fd) {
+inline int adb_close(int fd) {
     return close(fd);
 }
-#undef   close
-#define  close   ____xxx_close
+#undef close
+#define close ____xxx_close
 
 // On Windows, ADB has an indirection layer for file descriptors. If we get a
 // Win32 SOCKET object from an external library, we have to map it in to that
 // indirection layer, which this does.
-__inline__ int  adb_register_socket(int s) {
+inline int adb_register_socket(int s) {
     return s;
 }
 
-static __inline__  int  adb_read(int  fd, void*  buf, size_t  len)
-{
-    return TEMP_FAILURE_RETRY( read( fd, buf, len ) );
+static inline int adb_gethostname(char* name, size_t len) {
+    return gethostname(name, len);
+}
+
+static inline int adb_getlogin_r(char* buf, size_t bufsize) {
+    return getlogin_r(buf, bufsize);
+}
+
+static inline int adb_read(borrowed_fd fd, void* buf, size_t len) {
+    return TEMP_FAILURE_RETRY(read(fd.get(), buf, len));
+}
+
+static inline int adb_pread(borrowed_fd fd, void* buf, size_t len, off64_t offset) {
+#if defined(__APPLE__)
+    return TEMP_FAILURE_RETRY(pread(fd.get(), buf, len, offset));
+#else
+    return TEMP_FAILURE_RETRY(pread64(fd.get(), buf, len, offset));
+#endif
 }
 
 // Like unix_read(), but does not handle EINTR.
-static __inline__ int unix_read_interruptible(int fd, void* buf, size_t len) {
-    return read(fd, buf, len);
+static inline int unix_read_interruptible(borrowed_fd fd, void* buf, size_t len) {
+    return read(fd.get(), buf, len);
 }
 
-#undef   read
-#define  read  ___xxx_read
+#undef read
+#define read ___xxx_read
+#undef pread
+#define pread ___xxx_pread
 
-static __inline__  int  adb_write(int  fd, const void*  buf, size_t  len)
-{
-    return TEMP_FAILURE_RETRY( write( fd, buf, len ) );
+static inline int adb_write(borrowed_fd fd, const void* buf, size_t len) {
+    return TEMP_FAILURE_RETRY(write(fd.get(), buf, len));
 }
+
+static inline int adb_pwrite(int fd, const void* buf, size_t len, off64_t offset) {
+#if defined(__APPLE__)
+    return TEMP_FAILURE_RETRY(pwrite(fd, buf, len, offset));
+#else
+    return TEMP_FAILURE_RETRY(pwrite64(fd, buf, len, offset));
+#endif
+}
+
 #undef   write
 #define  write  ___xxx_write
+#undef pwrite
+#define pwrite ___xxx_pwrite
 
-static __inline__ int64_t adb_lseek(int fd, int64_t pos, int where) {
+static inline int64_t adb_lseek(borrowed_fd fd, int64_t pos, int where) {
 #if defined(__APPLE__)
-    return lseek(fd, pos, where);
+    return lseek(fd.get(), pos, where);
 #else
-    return lseek64(fd, pos, where);
+    return lseek64(fd.get(), pos, where);
 #endif
 }
 #undef lseek
 #define lseek ___xxx_lseek
 
-static __inline__  int    adb_unlink(const char*  path)
-{
-    return  unlink(path);
+static inline int adb_unlink(const char* path) {
+    return unlink(path);
 }
-#undef  unlink
-#define unlink  ___xxx_unlink
+#undef unlink
+#define unlink ___xxx_unlink
 
-static __inline__  int  adb_creat(const char*  path, int  mode)
-{
-    int  fd = TEMP_FAILURE_RETRY( creat( path, mode ) );
+static inline int adb_creat(const char* path, int mode) {
+    int fd = TEMP_FAILURE_RETRY(creat(path, mode));
 
-    if ( fd < 0 )
-        return -1;
+    if (fd < 0) return -1;
 
     close_on_exec(fd);
     return fd;
 }
-#undef   creat
-#define  creat  ___xxx_creat
+#undef creat
+#define creat ___xxx_creat
 
-static __inline__ int unix_isatty(int fd) {
-    return isatty(fd);
+static inline int unix_isatty(borrowed_fd fd) {
+    return isatty(fd.get());
 }
-#define  isatty  ___xxx_isatty
+#define isatty ___xxx_isatty
 
 // Helper for network_* functions.
 inline int _fd_set_error_str(int fd, std::string* error) {
-  if (fd == -1) {
-    *error = strerror(errno);
-  }
-  return fd;
+    if (fd == -1) {
+        *error = strerror(errno);
+    }
+    return fd;
 }
 
 inline int network_inaddr_any_server(int port, int type, std::string* error) {
-  return _fd_set_error_str(socket_inaddr_any_server(port, type), error);
+    return _fd_set_error_str(socket_inaddr_any_server(port, type), error);
 }
 
 inline int network_local_client(const char* name, int namespace_id, int type, std::string* error) {
@@ -498,22 +576,21 @@
 
 int network_connect(const std::string& host, int port, int type, int timeout, std::string* error);
 
-static __inline__ int  adb_socket_accept(int  serverfd, struct sockaddr*  addr, socklen_t  *addrlen)
-{
+static inline int adb_socket_accept(borrowed_fd serverfd, struct sockaddr* addr,
+                                    socklen_t* addrlen) {
     int fd;
 
-    fd = TEMP_FAILURE_RETRY( accept( serverfd, addr, addrlen ) );
-    if (fd >= 0)
-        close_on_exec(fd);
+    fd = TEMP_FAILURE_RETRY(accept(serverfd.get(), addr, addrlen));
+    if (fd >= 0) close_on_exec(fd);
 
     return fd;
 }
 
-#undef   accept
-#define  accept  ___xxx_accept
+#undef accept
+#define accept ___xxx_accept
 
-inline int adb_socket_get_local_port(int fd) {
-    return socket_get_local_port(fd);
+inline int adb_socket_get_local_port(borrowed_fd fd) {
+    return socket_get_local_port(fd.get());
 }
 
 // Operate on a file descriptor returned from unix_open() or a well-known file
@@ -524,12 +601,12 @@
 // Windows implementations (in the ifdef above and in sysdeps_win32.cpp) call
 // into the C Runtime and its configurable CR/LF translation (which is settable
 // via _setmode()).
-#define  unix_read   adb_read
-#define  unix_write  adb_write
+#define unix_read adb_read
+#define unix_write adb_write
 #define unix_lseek adb_lseek
-#define  unix_close  adb_close
+#define unix_close adb_close
 
-static __inline__ int adb_thread_setname(const std::string& name) {
+static inline int adb_thread_setname(const std::string& name) {
 #ifdef __APPLE__
     return pthread_setname_np(name.c_str());
 #else
@@ -542,69 +619,101 @@
 #endif
 }
 
-static __inline__ int  adb_setsockopt( int  fd, int  level, int  optname, const void*  optval, socklen_t  optlen )
-{
-    return setsockopt( fd, level, optname, optval, optlen );
+static inline int adb_setsockopt(borrowed_fd fd, int level, int optname, const void* optval,
+                                 socklen_t optlen) {
+    return setsockopt(fd.get(), level, optname, optval, optlen);
 }
 
-#undef   setsockopt
-#define  setsockopt  ___xxx_setsockopt
+#undef setsockopt
+#define setsockopt ___xxx_setsockopt
 
-static __inline__ int  unix_socketpair( int  d, int  type, int  protocol, int sv[2] )
-{
-    return socketpair( d, type, protocol, sv );
+static inline int unix_socketpair(int d, int type, int protocol, int sv[2]) {
+    return socketpair(d, type, protocol, sv);
 }
 
-static __inline__ int  adb_socketpair( int  sv[2] )
-{
-    int  rc;
+static inline int adb_socketpair(int sv[2]) {
+    int rc;
 
-    rc = unix_socketpair( AF_UNIX, SOCK_STREAM, 0, sv );
-    if (rc < 0)
-        return -1;
+    rc = unix_socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
+    if (rc < 0) return -1;
 
-    close_on_exec( sv[0] );
-    close_on_exec( sv[1] );
+    close_on_exec(sv[0]);
+    close_on_exec(sv[1]);
     return 0;
 }
 
-#undef   socketpair
-#define  socketpair   ___xxx_socketpair
+#undef socketpair
+#define socketpair ___xxx_socketpair
 
 typedef struct pollfd adb_pollfd;
-static __inline__ int adb_poll(adb_pollfd* fds, size_t nfds, int timeout) {
+static inline int adb_poll(adb_pollfd* fds, size_t nfds, int timeout) {
     return TEMP_FAILURE_RETRY(poll(fds, nfds, timeout));
 }
 
 #define poll ___xxx_poll
 
-static __inline__ int  adb_mkdir(const std::string& path, int mode)
-{
+static inline int adb_mkdir(const std::string& path, int mode) {
     return mkdir(path.c_str(), mode);
 }
 
-#undef   mkdir
-#define  mkdir  ___xxx_mkdir
+#undef mkdir
+#define mkdir ___xxx_mkdir
 
-static __inline__ int adb_is_absolute_host_path(const char* path) {
+static inline int adb_rename(const char* oldpath, const char* newpath) {
+    return rename(oldpath, newpath);
+}
+
+static inline int adb_is_absolute_host_path(const char* path) {
     return path[0] == '/';
 }
 
+static inline int adb_get_os_handle(borrowed_fd fd) {
+    return fd.get();
+}
+
+// A very simple wrapper over a launched child process
+class Process {
+  public:
+    constexpr explicit Process(pid_t pid) : pid_(pid) {}
+    constexpr Process(Process&& other) : pid_(std::exchange(other.pid_, -1)) {}
+
+    constexpr explicit operator bool() const { return pid_ >= 0; }
+
+    void wait() {
+        if (*this) {
+            int status;
+            ::waitpid(pid_, &status, 0);
+            pid_ = -1;
+        }
+    }
+    void kill() {
+        if (*this) {
+            ::kill(pid_, SIGTERM);
+        }
+    }
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(Process);
+
+    pid_t pid_;
+};
+
+Process adb_launch_process(std::string_view executable, std::vector<std::string> args,
+                           std::initializer_list<int> fds_to_inherit = {});
+
 #endif /* !_WIN32 */
 
-static inline void disable_tcp_nagle(int fd) {
+static inline void disable_tcp_nagle(borrowed_fd fd) {
     int off = 1;
-    adb_setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &off, sizeof(off));
+    adb_setsockopt(fd.get(), IPPROTO_TCP, TCP_NODELAY, &off, sizeof(off));
 }
 
 // Sets TCP socket |fd| to send a keepalive TCP message every |interval_sec| seconds. Set
 // |interval_sec| to 0 to disable keepalives. If keepalives are enabled, the connection will be
 // configured to drop after 10 missed keepalives. Returns true on success.
-bool set_tcp_keepalive(int fd, int interval_sec);
+bool set_tcp_keepalive(borrowed_fd fd, int interval_sec);
 
 #if defined(_WIN32)
 // Win32 defines ERROR, which we don't need, but which conflicts with google3 logging.
 #undef ERROR
 #endif
-
-#endif /* _ADB_SYSDEPS_H */
diff --git a/adb/sysdeps/network.h b/adb/sysdeps/network.h
index 83ce371..fadd155 100644
--- a/adb/sysdeps/network.h
+++ b/adb/sysdeps/network.h
@@ -19,4 +19,4 @@
 #include <string>
 
 int network_loopback_client(int port, int type, std::string* error);
-int network_loopback_server(int port, int type, std::string* error);
+int network_loopback_server(int port, int type, std::string* error, bool prefer_ipv4);
diff --git a/adb/sysdeps/posix/network.cpp b/adb/sysdeps/posix/network.cpp
index 4de240e..a4d9013 100644
--- a/adb/sysdeps/posix/network.cpp
+++ b/adb/sysdeps/posix/network.cpp
@@ -104,13 +104,13 @@
     socklen_t addrlen = sizeof(addr_storage);
     sockaddr* addr = (ipv6 ? loopback_addr6 : loopback_addr4)(&addr_storage, &addrlen, port);
 
-    if (bind(s, addr, addrlen) != 0) {
+    if (bind(s.get(), addr, addrlen) != 0) {
         set_error(error);
         return -1;
     }
 
     if (type == SOCK_STREAM || type == SOCK_SEQPACKET) {
-        if (listen(s, SOMAXCONN) != 0) {
+        if (listen(s.get(), SOMAXCONN) != 0) {
             set_error(error);
             return -1;
         }
@@ -119,12 +119,15 @@
     return s.release();
 }
 
-int network_loopback_server(int port, int type, std::string* error) {
-    int rc = _network_loopback_server(false, port, type, error);
+int network_loopback_server(int port, int type, std::string* error, bool prefer_ipv4) {
+    int rc = -1;
+    if (prefer_ipv4) {
+        rc = _network_loopback_server(false, port, type, error);
+    }
 
-    // Only attempt to listen on IPv6 if IPv4 is unavailable.
+    // Only attempt to listen on IPv6 if IPv4 is unavailable or prefer_ipv4 is false
     // We don't want to start an IPv6 server if there's already an IPv4 one running.
-    if (rc == -1 && (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT)) {
+    if (rc == -1 && (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || !prefer_ipv4)) {
         return _network_loopback_server(true, port, type, error);
     }
     return rc;
diff --git a/adb/sysdeps/uio.h b/adb/sysdeps/uio.h
index d06ef89..ced884b 100644
--- a/adb/sysdeps/uio.h
+++ b/adb/sysdeps/uio.h
@@ -18,6 +18,8 @@
 
 #include <sys/types.h>
 
+#include "adb_unique_fd.h"
+
 #if defined(_WIN32)
 
 // Layout of this struct must match struct WSABUF (verified via static assert in sysdeps_win32.cpp)
@@ -26,13 +28,15 @@
     void* iov_base;
 };
 
-ssize_t adb_writev(int fd, const adb_iovec* iov, int iovcnt);
+ssize_t adb_writev(borrowed_fd fd, const adb_iovec* iov, int iovcnt);
 
 #else
 
 #include <sys/uio.h>
 using adb_iovec = struct iovec;
-#define adb_writev writev
+inline ssize_t adb_writev(borrowed_fd fd, const adb_iovec* iov, int iovcnt) {
+    return writev(fd.get(), iov, iovcnt);
+}
 
 #endif
 
diff --git a/adb/sysdeps_test.cpp b/adb/sysdeps_test.cpp
index 79cebe6..0f4b39c 100644
--- a/adb/sysdeps_test.cpp
+++ b/adb/sysdeps_test.cpp
@@ -25,6 +25,21 @@
 #include "sysdeps.h"
 #include "sysdeps/chrono.h"
 
+#if defined(_WIN32)
+#include <windows.h>
+static bool IsWine() {
+    HMODULE ntdll = GetModuleHandleW(L"ntdll.dll");
+    if (!ntdll) {
+        return false;
+    }
+    return GetProcAddress(ntdll, "wine_get_version") != nullptr;
+}
+#else
+static bool IsWine() {
+    return false;
+}
+#endif
+
 TEST(sysdeps_socketpair, smoke) {
     int fds[2];
     ASSERT_EQ(0, adb_socketpair(fds)) << strerror(errno);
@@ -182,8 +197,10 @@
 
     EXPECT_EQ(1, adb_poll(&pfd, 1, 100));
 
-    // Linux returns POLLIN | POLLHUP, Windows returns just POLLHUP.
-    EXPECT_EQ(POLLHUP, pfd.revents & POLLHUP);
+    if (!IsWine()) {
+        // Linux returns POLLIN | POLLHUP, Windows returns just POLLHUP.
+        EXPECT_EQ(POLLHUP, pfd.revents & POLLHUP);
+    }
 }
 
 TEST_F(sysdeps_poll, fd_count) {
diff --git a/adb/sysdeps_unix.cpp b/adb/sysdeps_unix.cpp
index 4445a44..e565706 100644
--- a/adb/sysdeps_unix.cpp
+++ b/adb/sysdeps_unix.cpp
@@ -16,7 +16,7 @@
 
 #include "sysdeps.h"
 
-bool set_tcp_keepalive(int fd, int interval_sec) {
+bool set_tcp_keepalive(borrowed_fd fd, int interval_sec) {
     int enable = (interval_sec > 0);
     if (adb_setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &enable, sizeof(enable))) {
         return false;
@@ -56,3 +56,37 @@
 
     return true;
 }
+
+static __inline__ void disable_close_on_exec(borrowed_fd fd) {
+    const auto oldFlags = fcntl(fd.get(), F_GETFD);
+    const auto newFlags = (oldFlags & ~FD_CLOEXEC);
+    if (newFlags != oldFlags) {
+        fcntl(fd.get(), F_SETFD, newFlags);
+    }
+}
+
+Process adb_launch_process(std::string_view executable, std::vector<std::string> args,
+                           std::initializer_list<int> fds_to_inherit) {
+    const auto pid = fork();
+    if (pid != 0) {
+        // parent, includes the case when failed to fork()
+        return Process(pid);
+    }
+    // child
+    std::vector<std::string> copies;
+    copies.reserve(args.size() + 1);
+    copies.emplace_back(executable);
+    copies.insert(copies.end(), std::make_move_iterator(args.begin()),
+                  std::make_move_iterator(args.end()));
+
+    std::vector<char*> rawArgs;
+    rawArgs.reserve(copies.size() + 1);
+    for (auto&& str : copies) {
+        rawArgs.push_back(str.data());
+    }
+    rawArgs.push_back(nullptr);
+    for (auto fd : fds_to_inherit) {
+        disable_close_on_exec(fd);
+    }
+    exit(execv(copies.front().data(), rawArgs.data()));
+}
diff --git a/adb/sysdeps_win32.cpp b/adb/sysdeps_win32.cpp
index 4c5d8cb..be82bc0 100644
--- a/adb/sysdeps_win32.cpp
+++ b/adb/sysdeps_win32.cpp
@@ -18,8 +18,9 @@
 
 #include "sysdeps.h"
 
-#include <winsock2.h> /* winsock.h *must* be included before windows.h. */
+#include <lmcons.h>
 #include <windows.h>
+#include <winsock2.h> /* winsock.h *must* be included before windows.h. */
 
 #include <errno.h>
 #include <stdio.h>
@@ -60,6 +61,7 @@
     int (*_fh_read)(FH, void*, int);
     int (*_fh_write)(FH, const void*, int);
     int (*_fh_writev)(FH, const adb_iovec*, int);
+    intptr_t (*_fh_get_os_handle)(FH);
 } FHClassRec;
 
 static void _fh_file_init(FH);
@@ -68,14 +70,11 @@
 static int _fh_file_read(FH, void*, int);
 static int _fh_file_write(FH, const void*, int);
 static int _fh_file_writev(FH, const adb_iovec*, int);
+static intptr_t _fh_file_get_os_handle(FH f);
 
 static const FHClassRec _fh_file_class = {
-    _fh_file_init,
-    _fh_file_close,
-    _fh_file_lseek,
-    _fh_file_read,
-    _fh_file_write,
-    _fh_file_writev,
+        _fh_file_init,  _fh_file_close,  _fh_file_lseek,         _fh_file_read,
+        _fh_file_write, _fh_file_writev, _fh_file_get_os_handle,
 };
 
 static void _fh_socket_init(FH);
@@ -84,14 +83,11 @@
 static int _fh_socket_read(FH, void*, int);
 static int _fh_socket_write(FH, const void*, int);
 static int _fh_socket_writev(FH, const adb_iovec*, int);
+static intptr_t _fh_socket_get_os_handle(FH f);
 
 static const FHClassRec _fh_socket_class = {
-    _fh_socket_init,
-    _fh_socket_close,
-    _fh_socket_lseek,
-    _fh_socket_read,
-    _fh_socket_write,
-    _fh_socket_writev,
+        _fh_socket_init,  _fh_socket_close,  _fh_socket_lseek,         _fh_socket_read,
+        _fh_socket_write, _fh_socket_writev, _fh_socket_get_os_handle,
 };
 
 #if defined(assert)
@@ -145,16 +141,14 @@
 static  FHRec        _win32_fhs[ WIN32_MAX_FHS ];
 static  int          _win32_fh_next;  // where to start search for free FHRec
 
-static FH
-_fh_from_int( int   fd, const char*   func )
-{
-    FH  f;
+static FH _fh_from_int(borrowed_fd bfd, const char* func) {
+    FH f;
 
+    int fd = bfd.get();
     fd -= WIN32_FH_BASE;
 
     if (fd < 0 || fd >= WIN32_MAX_FHS) {
-        D( "_fh_from_int: invalid fd %d passed to %s", fd + WIN32_FH_BASE,
-           func );
+        D("_fh_from_int: invalid fd %d passed to %s", fd + WIN32_FH_BASE, func);
         errno = EBADF;
         return nullptr;
     }
@@ -162,8 +156,7 @@
     f = &_win32_fhs[fd];
 
     if (f->used == 0) {
-        D( "_fh_from_int: invalid fd %d passed to %s", fd + WIN32_FH_BASE,
-           func );
+        D("_fh_from_int: invalid fd %d passed to %s", fd + WIN32_FH_BASE, func);
         errno = EBADF;
         return nullptr;
     }
@@ -171,20 +164,15 @@
     return f;
 }
 
-
-static int
-_fh_to_int( FH  f )
-{
+static int _fh_to_int(FH f) {
     if (f && f->used && f >= _win32_fhs && f < _win32_fhs + WIN32_MAX_FHS)
         return (int)(f - _win32_fhs) + WIN32_FH_BASE;
 
     return -1;
 }
 
-static FH
-_fh_alloc( FHClass  clazz )
-{
-    FH   f = nullptr;
+static FH _fh_alloc(FHClass clazz) {
+    FH f = nullptr;
 
     std::lock_guard<std::mutex> lock(_win32_lock);
 
@@ -206,10 +194,7 @@
     return nullptr;
 }
 
-
-static int
-_fh_close( FH   f )
-{
+static int _fh_close(FH f) {
     // Use lock so that closing only happens once and so that _fh_alloc can't
     // allocate a FH that we're in the middle of closing.
     std::lock_guard<std::mutex> lock(_win32_lock);
@@ -342,6 +327,10 @@
     return li.QuadPart;
 }
 
+static intptr_t _fh_file_get_os_handle(FH f) {
+    return reinterpret_cast<intptr_t>(f->u.handle);
+}
+
 /**************************************************************************/
 /**************************************************************************/
 /*****                                                                *****/
@@ -456,7 +445,7 @@
     return _fh_to_int(f);
 }
 
-int adb_read(int fd, void* buf, int len) {
+int adb_read(borrowed_fd fd, void* buf, int len) {
     FH f = _fh_from_int(fd, __func__);
 
     if (f == nullptr) {
@@ -467,7 +456,27 @@
     return f->clazz->_fh_read(f, buf, len);
 }
 
-int adb_write(int fd, const void* buf, int len) {
+int adb_pread(borrowed_fd fd, void* buf, int len, off64_t offset) {
+    OVERLAPPED overlapped = {};
+    overlapped.Offset = static_cast<DWORD>(offset);
+    overlapped.OffsetHigh = static_cast<DWORD>(offset >> 32);
+    DWORD bytes_read;
+    if (!::ReadFile(adb_get_os_handle(fd), buf, static_cast<DWORD>(len), &bytes_read,
+                    &overlapped)) {
+        D("adb_pread: could not read %d bytes from FD %d", len, fd.get());
+        switch (::GetLastError()) {
+            case ERROR_IO_PENDING:
+                errno = EAGAIN;
+                return -1;
+            default:
+                errno = EINVAL;
+                return -1;
+        }
+    }
+    return static_cast<int>(bytes_read);
+}
+
+int adb_write(borrowed_fd fd, const void* buf, int len) {
     FH f = _fh_from_int(fd, __func__);
 
     if (f == nullptr) {
@@ -478,7 +487,7 @@
     return f->clazz->_fh_write(f, buf, len);
 }
 
-ssize_t adb_writev(int fd, const adb_iovec* iov, int iovcnt) {
+ssize_t adb_writev(borrowed_fd fd, const adb_iovec* iov, int iovcnt) {
     FH f = _fh_from_int(fd, __func__);
 
     if (f == nullptr) {
@@ -489,7 +498,26 @@
     return f->clazz->_fh_writev(f, iov, iovcnt);
 }
 
-int64_t adb_lseek(int fd, int64_t pos, int where) {
+int adb_pwrite(borrowed_fd fd, const void* buf, int len, off64_t offset) {
+    OVERLAPPED params = {};
+    params.Offset = static_cast<DWORD>(offset);
+    params.OffsetHigh = static_cast<DWORD>(offset >> 32);
+    DWORD bytes_written = 0;
+    if (!::WriteFile(adb_get_os_handle(fd), buf, len, &bytes_written, &params)) {
+        D("adb_pwrite: could not write %d bytes to FD %d", len, fd.get());
+        switch (::GetLastError()) {
+            case ERROR_IO_PENDING:
+                errno = EAGAIN;
+                return -1;
+            default:
+                errno = EINVAL;
+                return -1;
+        }
+    }
+    return static_cast<int>(bytes_written);
+}
+
+int64_t adb_lseek(borrowed_fd fd, int64_t pos, int where) {
     FH f = _fh_from_int(fd, __func__);
     if (!f) {
         errno = EBADF;
@@ -511,6 +539,20 @@
     return 0;
 }
 
+HANDLE adb_get_os_handle(borrowed_fd fd) {
+    FH f = _fh_from_int(fd, __func__);
+
+    if (!f) {
+        errno = EBADF;
+        return nullptr;
+    }
+
+    D("adb_get_os_handle: %s", f->name);
+    const intptr_t intptr_handle = f->clazz->_fh_get_os_handle(f);
+    const HANDLE handle = reinterpret_cast<const HANDLE>(intptr_handle);
+    return handle;
+}
+
 /**************************************************************************/
 /**************************************************************************/
 /*****                                                                *****/
@@ -621,15 +663,6 @@
 
 static int _fh_socket_close(FH f) {
     if (f->fh_socket != INVALID_SOCKET) {
-        /* gently tell any peer that we're closing the socket */
-        if (shutdown(f->fh_socket, SD_BOTH) == SOCKET_ERROR) {
-            // If the socket is not connected, this returns an error. We want to
-            // minimize logging spam, so don't log these errors for now.
-#if 0
-            D("socket shutdown failed: %s",
-              android::base::SystemErrorCodeToString(WSAGetLastError()).c_str());
-#endif
-        }
         if (closesocket(f->fh_socket) == SOCKET_ERROR) {
             // Don't set errno here, since adb_close will ignore it.
             const DWORD err = WSAGetLastError();
@@ -708,12 +741,16 @@
               android::base::SystemErrorCodeToString(err).c_str());
         }
         _socket_set_errno(err);
-        result = -1;
+        return -1;
     }
     CHECK_GE(static_cast<DWORD>(std::numeric_limits<int>::max()), bytes_written);
     return static_cast<int>(bytes_written);
 }
 
+static intptr_t _fh_socket_get_os_handle(FH f) {
+    return f->u.socket;
+}
+
 /**************************************************************************/
 /**************************************************************************/
 /*****                                                                *****/
@@ -884,7 +921,8 @@
     return fd;
 }
 
-int network_loopback_server(int port, int type, std::string* error) {
+int network_loopback_server(int port, int type, std::string* error, bool prefer_ipv4) {
+    // TODO implement IPv6 support on windows
     return _network_server(port, type, INADDR_LOOPBACK, error);
 }
 
@@ -972,12 +1010,61 @@
     return _fh_to_int(f);
 }
 
+static bool isBlankStr(const char* str) {
+    for (; *str != '\0'; ++str) {
+        if (!isblank(*str)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+int adb_gethostname(char* name, size_t len) {
+    const char* computerName = adb_getenv("COMPUTERNAME");
+    if (computerName && !isBlankStr(computerName)) {
+        strncpy(name, computerName, len);
+        name[len - 1] = '\0';
+        return 0;
+    }
+
+    wchar_t buffer[MAX_COMPUTERNAME_LENGTH + 1];
+    DWORD size = sizeof(buffer);
+    if (!GetComputerNameW(buffer, &size)) {
+        return -1;
+    }
+    std::string name_utf8;
+    if (!android::base::WideToUTF8(buffer, &name_utf8)) {
+        return -1;
+    }
+
+    strncpy(name, name_utf8.c_str(), len);
+    name[len - 1] = '\0';
+    return 0;
+}
+
+int adb_getlogin_r(char* buf, size_t bufsize) {
+    wchar_t buffer[UNLEN + 1];
+    DWORD len = sizeof(buffer);
+    if (!GetUserNameW(buffer, &len)) {
+        return -1;
+    }
+
+    std::string login;
+    if (!android::base::WideToUTF8(buffer, &login)) {
+        return -1;
+    }
+
+    strncpy(buf, login.c_str(), bufsize);
+    buf[bufsize - 1] = '\0';
+    return 0;
+}
+
 #undef accept
-int adb_socket_accept(int serverfd, struct sockaddr* addr, socklen_t* addrlen) {
+int adb_socket_accept(borrowed_fd serverfd, struct sockaddr* addr, socklen_t* addrlen) {
     FH serverfh = _fh_from_int(serverfd, __func__);
 
     if (!serverfh || serverfh->clazz != &_fh_socket_class) {
-        D("adb_socket_accept: invalid fd %d", serverfd);
+        D("adb_socket_accept: invalid fd %d", serverfd.get());
         errno = EBADF;
         return -1;
     }
@@ -992,7 +1079,7 @@
     fh->fh_socket = accept(serverfh->fh_socket, addr, addrlen);
     if (fh->fh_socket == INVALID_SOCKET) {
         const DWORD err = WSAGetLastError();
-        LOG(ERROR) << "adb_socket_accept: accept on fd " << serverfd
+        LOG(ERROR) << "adb_socket_accept: accept on fd " << serverfd.get()
                    << " failed: " + android::base::SystemErrorCodeToString(err);
         _socket_set_errno(err);
         return -1;
@@ -1000,16 +1087,16 @@
 
     const int fd = _fh_to_int(fh.get());
     snprintf(fh->name, sizeof(fh->name), "%d(accept:%s)", fd, serverfh->name);
-    D("adb_socket_accept on fd %d returns fd %d", serverfd, fd);
+    D("adb_socket_accept on fd %d returns fd %d", serverfd.get(), fd);
     fh.release();
     return fd;
 }
 
-int adb_setsockopt(int fd, int level, int optname, const void* optval, socklen_t optlen) {
+int adb_setsockopt(borrowed_fd fd, int level, int optname, const void* optval, socklen_t optlen) {
     FH fh = _fh_from_int(fd, __func__);
 
     if (!fh || fh->clazz != &_fh_socket_class) {
-        D("adb_setsockopt: invalid fd %d", fd);
+        D("adb_setsockopt: invalid fd %d", fd.get());
         errno = EBADF;
         return -1;
     }
@@ -1022,7 +1109,7 @@
         setsockopt(fh->fh_socket, level, optname, reinterpret_cast<const char*>(optval), optlen);
     if (result == SOCKET_ERROR) {
         const DWORD err = WSAGetLastError();
-        D("adb_setsockopt: setsockopt on fd %d level %d optname %d failed: %s\n", fd, level,
+        D("adb_setsockopt: setsockopt on fd %d level %d optname %d failed: %s\n", fd.get(), level,
           optname, android::base::SystemErrorCodeToString(err).c_str());
         _socket_set_errno(err);
         result = -1;
@@ -1030,11 +1117,11 @@
     return result;
 }
 
-int adb_getsockname(int fd, struct sockaddr* sockaddr, socklen_t* optlen) {
+static int adb_getsockname(borrowed_fd fd, struct sockaddr* sockaddr, socklen_t* optlen) {
     FH fh = _fh_from_int(fd, __func__);
 
     if (!fh || fh->clazz != &_fh_socket_class) {
-        D("adb_getsockname: invalid fd %d", fd);
+        D("adb_getsockname: invalid fd %d", fd.get());
         errno = EBADF;
         return -1;
     }
@@ -1042,7 +1129,7 @@
     int result = getsockname(fh->fh_socket, sockaddr, optlen);
     if (result == SOCKET_ERROR) {
         const DWORD err = WSAGetLastError();
-        D("adb_getsockname: setsockopt on fd %d failed: %s\n", fd,
+        D("adb_getsockname: setsockopt on fd %d failed: %s\n", fd.get(),
           android::base::SystemErrorCodeToString(err).c_str());
         _socket_set_errno(err);
         result = -1;
@@ -1050,7 +1137,7 @@
     return result;
 }
 
-int adb_socket_get_local_port(int fd) {
+int adb_socket_get_local_port(borrowed_fd fd) {
     sockaddr_storage addr_storage;
     socklen_t addr_len = sizeof(addr_storage);
 
@@ -1068,11 +1155,11 @@
     return ntohs(reinterpret_cast<sockaddr_in*>(&addr_storage)->sin_port);
 }
 
-int adb_shutdown(int fd, int direction) {
+int adb_shutdown(borrowed_fd fd, int direction) {
     FH f = _fh_from_int(fd, __func__);
 
     if (!f || f->clazz != &_fh_socket_class) {
-        D("adb_shutdown: invalid fd %d", fd);
+        D("adb_shutdown: invalid fd %d", fd.get());
         errno = EBADF;
         return -1;
     }
@@ -1080,7 +1167,7 @@
     D("adb_shutdown: %s", f->name);
     if (shutdown(f->fh_socket, direction) == SOCKET_ERROR) {
         const DWORD err = WSAGetLastError();
-        D("socket shutdown fd %d failed: %s", fd,
+        D("socket shutdown fd %d failed: %s", fd.get(),
           android::base::SystemErrorCodeToString(err).c_str());
         _socket_set_errno(err);
         return -1;
@@ -1096,7 +1183,7 @@
     int local_port = -1;
     std::string error;
 
-    server = network_loopback_server(0, SOCK_STREAM, &error);
+    server = network_loopback_server(0, SOCK_STREAM, &error, true);
     if (server < 0) {
         D("adb_socketpair: failed to create server: %s", error.c_str());
         goto fail;
@@ -1138,12 +1225,12 @@
     return -1;
 }
 
-bool set_file_block_mode(int fd, bool block) {
+bool set_file_block_mode(borrowed_fd fd, bool block) {
     FH fh = _fh_from_int(fd, __func__);
 
     if (!fh || !fh->used) {
         errno = EBADF;
-        D("Setting nonblocking on bad file descriptor %d", fd);
+        D("Setting nonblocking on bad file descriptor %d", fd.get());
         return false;
     }
 
@@ -1152,22 +1239,22 @@
         if (ioctlsocket(fh->u.socket, FIONBIO, &x) != 0) {
             int error = WSAGetLastError();
             _socket_set_errno(error);
-            D("Setting %d nonblocking failed (%d)", fd, error);
+            D("Setting %d nonblocking failed (%d)", fd.get(), error);
             return false;
         }
         return true;
     } else {
         errno = ENOTSOCK;
-        D("Setting nonblocking on non-socket %d", fd);
+        D("Setting nonblocking on non-socket %d", fd.get());
         return false;
     }
 }
 
-bool set_tcp_keepalive(int fd, int interval_sec) {
+bool set_tcp_keepalive(borrowed_fd fd, int interval_sec) {
     FH fh = _fh_from_int(fd, __func__);
 
     if (!fh || fh->clazz != &_fh_socket_class) {
-        D("set_tcp_keepalive(%d) failed: invalid fd", fd);
+        D("set_tcp_keepalive(%d) failed: invalid fd", fd.get());
         errno = EBADF;
         return false;
     }
@@ -1181,7 +1268,7 @@
     if (WSAIoctl(fh->fh_socket, SIO_KEEPALIVE_VALS, &keepalive, sizeof(keepalive), nullptr, 0,
                  &bytes_returned, nullptr, nullptr) != 0) {
         const DWORD err = WSAGetLastError();
-        D("set_tcp_keepalive(%d) failed: %s", fd,
+        D("set_tcp_keepalive(%d) failed: %s", fd.get(),
           android::base::SystemErrorCodeToString(err).c_str());
         _socket_set_errno(err);
         return false;
@@ -1228,12 +1315,12 @@
 // Returns a console HANDLE if |fd| is a console, otherwise returns nullptr.
 // If a valid HANDLE is returned and |mode| is not null, |mode| is also filled
 // with the console mode. Requires GENERIC_READ access to the underlying HANDLE.
-static HANDLE _get_console_handle(int fd, DWORD* mode=nullptr) {
+static HANDLE _get_console_handle(borrowed_fd fd, DWORD* mode = nullptr) {
     // First check isatty(); this is very fast and eliminates most non-console
     // FDs, but returns 1 for both consoles and character devices like NUL.
 #pragma push_macro("isatty")
 #undef isatty
-    if (!isatty(fd)) {
+    if (!isatty(fd.get())) {
         return nullptr;
     }
 #pragma pop_macro("isatty")
@@ -1241,7 +1328,7 @@
     // To differentiate between character devices and consoles we need to get
     // the underlying HANDLE and use GetConsoleMode(), which is what requires
     // GENERIC_READ permissions.
-    const intptr_t intptr_handle = _get_osfhandle(fd);
+    const intptr_t intptr_handle = _get_osfhandle(fd.get());
     if (intptr_handle == -1) {
         return nullptr;
     }
@@ -1265,7 +1352,7 @@
     return _get_console_handle(fd);
 }
 
-int unix_isatty(int fd) {
+int unix_isatty(borrowed_fd fd) {
     return _get_console_handle(fd) ? 1 : 0;
 }
 
@@ -1645,7 +1732,7 @@
 
 // Prefix the len bytes in buf with the escape character, and then return the
 // new buffer length.
-size_t _escape_prefix(char* const buf, const size_t len) {
+static size_t _escape_prefix(char* const buf, const size_t len) {
     // If nothing to prefix, don't do anything. We might be called with
     // len == 0, if alt was held down with a dead key which produced nothing.
     if (len == 0) {
@@ -2073,7 +2160,7 @@
 }
 
 // Called by 'adb shell' and 'adb exec-in' (via unix_read()) to read from stdin.
-int unix_read_interruptible(int fd, void* buf, size_t len) {
+int unix_read_interruptible(borrowed_fd fd, void* buf, size_t len) {
     if ((fd == STDIN_FILENO) && (_console_handle != nullptr)) {
         // If it is a request to read from stdin, and stdin_raw_init() has been
         // called, and it successfully configured the console, then read from
@@ -2093,7 +2180,7 @@
         // plain read() in favor of unix_read() or adb_read().
 #pragma push_macro("read")
 #undef read
-        return read(fd, buf, len);
+        return read(fd.get(), buf, len);
 #pragma pop_macro("read")
     }
 }
@@ -2305,6 +2392,20 @@
     return _wmkdir(path_wide.c_str());
 }
 
+int adb_rename(const char* oldpath, const char* newpath) {
+    std::wstring oldpath_wide, newpath_wide;
+    if (!android::base::UTF8ToWide(oldpath, &oldpath_wide)) {
+        return -1;
+    }
+    if (!android::base::UTF8ToWide(newpath, &newpath_wide)) {
+        return -1;
+    }
+
+    // MSDN just says the return value is non-zero on failure, make sure it
+    // returns -1 on failure so that it behaves the same as other systems.
+    return _wrename(oldpath_wide.c_str(), newpath_wide.c_str()) ? -1 : 0;
+}
+
 // Version of utime() that takes a UTF-8 path.
 int adb_utime(const char* path, struct utimbuf* u) {
     std::wstring path_wide;
@@ -2617,7 +2718,9 @@
 extern "C" int wmain(int argc, wchar_t **argv) {
     // Convert args from UTF-16 to UTF-8 and pass that to main().
     NarrowArgs narrow_args(argc, argv);
-    return main(argc, narrow_args.data());
+
+    // Avoid destructing NarrowArgs: argv might have been mutated to point to string literals.
+    _exit(main(argc, narrow_args.data()));
 }
 
 // Shadow UTF-8 environment variable name/value pairs that are created from
@@ -2732,6 +2835,66 @@
     return buf;
 }
 
+void enable_inherit(borrowed_fd fd) {
+    auto osh = adb_get_os_handle(fd);
+    const auto h = reinterpret_cast<HANDLE>(osh);
+    ::SetHandleInformation(h, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
+}
+
+void disable_inherit(borrowed_fd fd) {
+    auto osh = adb_get_os_handle(fd);
+    const auto h = reinterpret_cast<HANDLE>(osh);
+    ::SetHandleInformation(h, HANDLE_FLAG_INHERIT, 0);
+}
+
+Process adb_launch_process(std::string_view executable, std::vector<std::string> args,
+                           std::initializer_list<int> fds_to_inherit) {
+    std::wstring wexe;
+    if (!android::base::UTF8ToWide(executable.data(), executable.size(), &wexe)) {
+        return Process();
+    }
+
+    std::wstring wargs = L"\"" + wexe + L"\"";
+    std::wstring warg;
+    for (auto arg : args) {
+        warg.clear();
+        if (!android::base::UTF8ToWide(arg.data(), arg.size(), &warg)) {
+            return Process();
+        }
+        wargs += L" \"";
+        wargs += warg;
+        wargs += L'\"';
+    }
+
+    STARTUPINFOW sinfo = {sizeof(sinfo)};
+    PROCESS_INFORMATION pinfo = {};
+
+    // TODO: use the Vista+ API to pass the list of inherited handles explicitly;
+    // see http://blogs.msdn.com/b/oldnewthing/archive/2011/12/16/10248328.aspx
+    for (auto fd : fds_to_inherit) {
+        enable_inherit(fd);
+    }
+    const auto created = CreateProcessW(wexe.c_str(), wargs.data(),
+                                        nullptr,                    // process attributes
+                                        nullptr,                    // thread attributes
+                                        fds_to_inherit.size() > 0,  // inherit any handles?
+                                        0,                          // flags
+                                        nullptr,                    // environment
+                                        nullptr,                    // current directory
+                                        &sinfo,                     // startup info
+                                        &pinfo);
+    for (auto fd : fds_to_inherit) {
+        disable_inherit(fd);
+    }
+
+    if (!created) {
+        return Process();
+    }
+
+    ::CloseHandle(pinfo.hThread);
+    return Process(pinfo.hProcess);
+}
+
 // The SetThreadDescription API was brought in version 1607 of Windows 10.
 typedef HRESULT(WINAPI* SetThreadDescription)(HANDLE hThread, PCWSTR lpThreadDescription);
 
diff --git a/adb/test_adb.py b/adb/test_adb.py
index 8272722..c872fb0 100755
--- a/adb/test_adb.py
+++ b/adb/test_adb.py
@@ -33,6 +33,11 @@
 import unittest
 import warnings
 
+def find_open_port():
+    # Find an open port.
+    with socket.socket() as s:
+        s.bind(("localhost", 0))
+        return s.getsockname()[1]
 
 @contextlib.contextmanager
 def fake_adbd(protocol=socket.AF_INET, port=0):
@@ -126,10 +131,7 @@
     This creates an ADB server and returns the port it's listening on.
     """
 
-    port = 5038
-    # Kill any existing server on this non-default port.
-    subprocess.check_output(["adb", "-P", str(port), "kill-server"],
-                            stderr=subprocess.STDOUT)
+    port = find_open_port()
     read_pipe, write_pipe = os.pipe()
 
     if sys.platform == "win32":
@@ -224,10 +226,7 @@
         # adb server, this also tests whether multiple instances of the adb
         # server conflict on adb.log.
 
-        port = 5038
-        # Kill any existing server on this non-default port.
-        subprocess.check_output(["adb", "-P", str(port), "kill-server"],
-                                stderr=subprocess.STDOUT)
+        port = find_open_port()
 
         try:
             # We get warnings for unclosed files for the subprocess's pipes,
@@ -281,6 +280,33 @@
             subprocess.check_output(["adb", "-P", str(port), "kill-server"],
                                     stderr=subprocess.STDOUT)
 
+    @unittest.skipUnless(
+        os.name == "posix",
+        "adb doesn't yet support IPv6 on Windows",
+    )
+    def test_starts_on_ipv6_localhost(self):
+        """
+        Tests that the server can start up on ::1 and that it's accessible
+        """
+
+        server_port = find_open_port()
+        try:
+            subprocess.check_output(
+                ["adb", "-L", "tcp:[::1]:{}".format(server_port), "server"],
+                stderr=subprocess.STDOUT,
+            )
+            with fake_adbd() as (port, _):
+                with adb_connect(self, serial="localhost:{}".format(port)):
+                    pass
+        finally:
+            # If we started a server, kill it.
+            subprocess.check_output(
+                ["adb", "-P", str(server_port), "kill-server"],
+                stderr=subprocess.STDOUT,
+            )
+
+
+
 
 class EmulatorTest(unittest.TestCase):
     """Tests for the emulator connection."""
diff --git a/adb/test_device.py b/adb/test_device.py
index f95a5b3..6a9ff89 100755
--- a/adb/test_device.py
+++ b/adb/test_device.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2015 The Android Open Source Project
@@ -81,6 +81,13 @@
         self.device = adb.get_device()
 
 
+class AbbTest(DeviceTest):
+    def test_smoke(self):
+        result = subprocess.run(['adb', 'abb'], capture_output=True)
+        self.assertEqual(1, result.returncode)
+        expected_output = b"cmd: No service specified; use -l to list all services\n"
+        self.assertEqual(expected_output, result.stderr)
+
 class ForwardReverseTest(DeviceTest):
     def _test_no_rebind(self, description, direction_list, direction,
                        direction_no_rebind, direction_remove_all):
@@ -139,6 +146,25 @@
         msg = self.device.forward_list()
         self.assertEqual('', msg.strip())
 
+    def test_forward_old_protocol(self):
+        serialno = subprocess.check_output(self.device.adb_cmd + ['get-serialno']).strip()
+
+        msg = self.device.forward_list()
+        self.assertEqual('', msg.strip(),
+                         'Forwarding list must be empty to run this test.')
+
+        s = socket.create_connection(("localhost", 5037))
+        service = b"host-serial:%s:forward:tcp:5566;tcp:6655" % serialno
+        cmd = b"%04x%s" % (len(service), service)
+        s.sendall(cmd)
+
+        msg = self.device.forward_list()
+        self.assertTrue(re.search(r'tcp:5566.+tcp:6655', msg))
+
+        self.device.forward_remove_all()
+        msg = self.device.forward_list()
+        self.assertEqual('', msg.strip())
+
     def test_forward_tcp_port_0(self):
         self.assertEqual('', self.device.forward_list().strip(),
                          'Forwarding list must be empty to run this test.')
@@ -227,7 +253,7 @@
                     # Accept the client connection.
                     accepted_connection, addr = listener.accept()
                     with contextlib.closing(accepted_connection) as server:
-                        data = 'hello'
+                        data = b'hello'
 
                         # Send data into the port setup by adb forward.
                         client.sendall(data)
@@ -235,7 +261,7 @@
                         client.close()
 
                         # Verify that the data came back via adb reverse.
-                        self.assertEqual(data, server.makefile().read())
+                        self.assertEqual(data, server.makefile().read().encode("utf8"))
         finally:
             if reverse_setup:
                 self.device.reverse_remove(forward_spec)
@@ -249,7 +275,7 @@
 
         Args:
           shell_args: List of string arguments to `adb shell`.
-          input: String input to send to the interactive shell.
+          input: bytes input to send to the interactive shell.
 
         Returns:
           The remote exit code.
@@ -267,7 +293,7 @@
         # Closing host-side stdin doesn't trigger a PTY shell to exit so we need
         # to explicitly add an exit command to close the session from the device
         # side, plus the necessary newline to complete the interactive command.
-        proc.communicate(input + '; exit\n')
+        proc.communicate(input + b'; exit\n')
         return proc.returncode
 
     def test_cat(self):
@@ -400,7 +426,7 @@
         self.assertEqual('foo' + self.device.linesep, result[1])
         self.assertEqual('bar' + self.device.linesep, result[2])
 
-        self.assertEqual(17, self._interactive_shell([], 'exit 17'))
+        self.assertEqual(17, self._interactive_shell([], b'exit 17'))
 
         # -x flag should disable shell protocol.
         result = self.device.shell_nocheck(
@@ -409,7 +435,7 @@
         self.assertEqual('foo{0}bar{0}'.format(self.device.linesep), result[1])
         self.assertEqual('', result[2])
 
-        self.assertEqual(0, self._interactive_shell(['-x'], 'exit 17'))
+        self.assertEqual(0, self._interactive_shell(['-x'], b'exit 17'))
 
     def test_non_interactive_sigint(self):
         """Tests that SIGINT in a non-interactive shell kills the process.
@@ -428,7 +454,7 @@
                 self.device.adb_cmd + shlex.split('shell echo $$; sleep 60'),
                 stdin=subprocess.PIPE, stdout=subprocess.PIPE,
                 stderr=subprocess.STDOUT)
-        remote_pid = sleep_proc.stdout.readline().strip()
+        remote_pid = sleep_proc.stdout.readline().strip().decode("utf8")
         self.assertIsNone(sleep_proc.returncode, 'subprocess terminated early')
         proc_query = shlex.split('ps {0} | grep {0}'.format(remote_pid))
 
@@ -450,9 +476,10 @@
                                     'on this device')
 
         # Test both small and large inputs.
-        small_input = 'foo'
-        large_input = '\n'.join(c * 100 for c in (string.ascii_letters +
-                                                  string.digits))
+        small_input = b'foo'
+        characters = [c.encode("utf8") for c in string.ascii_letters + string.digits]
+        large_input = b'\n'.join(characters)
+
 
         for input in (small_input, large_input):
             proc = subprocess.Popen(self.device.adb_cmd + ['shell', 'cat'],
@@ -461,7 +488,7 @@
                                     stderr=subprocess.PIPE)
             stdout, stderr = proc.communicate(input)
             self.assertEqual(input.splitlines(), stdout.splitlines())
-            self.assertEqual('', stderr)
+            self.assertEqual(b'', stderr)
 
     def test_sighup(self):
         """Ensure that SIGHUP gets sent upon non-interactive ctrl-c"""
@@ -483,7 +510,7 @@
                                           stdin=subprocess.PIPE,
                                           stdout=subprocess.PIPE)
 
-        self.assertEqual("Waiting\n", process.stdout.readline())
+        self.assertEqual(b"Waiting\n", process.stdout.readline())
         process.send_signal(signal.SIGINT)
         process.wait()
 
@@ -514,9 +541,39 @@
             threads.append(thread)
         for thread in threads:
             thread.join()
-        for i, success in result.iteritems():
+        for i, success in result.items():
             self.assertTrue(success)
 
+    def disabled_test_parallel(self):
+        """Spawn a bunch of `adb shell` instances in parallel.
+
+        This was broken historically due to the use of select, which only works
+        for fds that are numerically less than 1024.
+
+        Bug: http://b/141955761"""
+
+        n_procs = 2048
+        procs = dict()
+        for i in range(0, n_procs):
+            procs[i] = subprocess.Popen(
+                ['adb', 'shell', 'read foo; echo $foo; read rc; exit $rc'],
+                stdin=subprocess.PIPE,
+                stdout=subprocess.PIPE
+            )
+
+        for i in range(0, n_procs):
+            procs[i].stdin.write("%d\n" % i)
+
+        for i in range(0, n_procs):
+            response = procs[i].stdout.readline()
+            assert(response == "%d\n" % i)
+
+        for i in range(0, n_procs):
+            procs[i].stdin.write("%d\n" % (i % 256))
+
+        for i in range(0, n_procs):
+            assert(procs[i].wait() == i % 256)
+
 
 class ArgumentEscapingTest(DeviceTest):
     def test_shell_escaping(self):
@@ -553,14 +610,14 @@
     def test_install_argument_escaping(self):
         """Make sure that install argument escaping works."""
         # http://b/20323053, http://b/3090932.
-        for file_suffix in ('-text;ls;1.apk', "-Live Hold'em.apk"):
+        for file_suffix in (b'-text;ls;1.apk', b"-Live Hold'em.apk"):
             tf = tempfile.NamedTemporaryFile('wb', suffix=file_suffix,
                                              delete=False)
             tf.close()
 
             # Installing bogus .apks fails if the device supports exit codes.
             try:
-                output = self.device.install(tf.name)
+                output = self.device.install(tf.name.decode("utf8"))
             except subprocess.CalledProcessError as e:
                 output = e.output
 
@@ -663,7 +720,7 @@
     max_size = 16 * (1 << 10)
 
     files = []
-    for _ in xrange(num_files):
+    for _ in range(num_files):
         file_handle = tempfile.NamedTemporaryFile(dir=in_dir, delete=False)
 
         size = random.randrange(min_size, max_size, 1024)
@@ -682,7 +739,7 @@
     max_size = 16 * (1 << 10)
 
     files = []
-    for file_num in xrange(num_files):
+    for file_num in range(num_files):
         size = random.randrange(min_size, max_size, 1024)
 
         base_name = prefix + str(file_num)
@@ -829,7 +886,7 @@
             subdir_temp_files = make_random_host_files(in_dir=subdir,
                                                        num_files=4)
 
-            paths = map(lambda temp_file: temp_file.full_path, temp_files)
+            paths = [x.full_path for x in temp_files]
             paths.append(subdir)
             self.device._simple_call(['push'] + paths + [self.DEVICE_TEMP_DIR])
 
@@ -858,7 +915,7 @@
         Bug: http://b/26816782
         """
         with tempfile.NamedTemporaryFile() as tmp_file:
-            tmp_file.write('\0' * 1024 * 1024)
+            tmp_file.write(b'\0' * 1024 * 1024)
             tmp_file.flush()
             try:
                 self.device.push(local=tmp_file.name, remote='/system/')
@@ -866,8 +923,8 @@
             except subprocess.CalledProcessError as e:
                 output = e.output
 
-            self.assertTrue('Permission denied' in output or
-                            'Read-only file system' in output)
+            self.assertTrue(b'Permission denied' in output or
+                            b'Read-only file system' in output)
 
     @requires_non_root
     def test_push_directory_creation(self):
@@ -876,7 +933,7 @@
         Bug: http://b/110953234
         """
         with tempfile.NamedTemporaryFile() as tmp_file:
-            tmp_file.write('\0' * 1024 * 1024)
+            tmp_file.write(b'\0' * 1024 * 1024)
             tmp_file.flush()
             remote_path = self.DEVICE_TEMP_DIR + '/test_push_directory_creation'
             self.device.shell(['rm', '-rf', remote_path])
@@ -884,6 +941,20 @@
             remote_path += '/filename'
             self.device.push(local=tmp_file.name, remote=remote_path)
 
+    def disabled_test_push_multiple_slash_root(self):
+        """Regression test for pushing to //data/local/tmp.
+
+        Bug: http://b/141311284
+
+        Disabled because this broken on the adbd side as well: b/141943968
+        """
+        with tempfile.NamedTemporaryFile() as tmp_file:
+            tmp_file.write('\0' * 1024 * 1024)
+            tmp_file.flush()
+            remote_path = '/' + self.DEVICE_TEMP_DIR + '/test_push_multiple_slash_root'
+            self.device.shell(['rm', '-rf', remote_path])
+            self.device.push(local=tmp_file.name, remote=remote_path)
+
     def _test_pull(self, remote_file, checksum):
         tmp_write = tempfile.NamedTemporaryFile(mode='wb', delete=False)
         tmp_write.close()
@@ -904,7 +975,7 @@
         except subprocess.CalledProcessError as e:
             output = e.output
 
-        self.assertIn('Permission denied', output)
+        self.assertIn(b'Permission denied', output)
 
         self.device.shell(['rm', '-f', self.DEVICE_TEMP_FILE])
 
@@ -1103,7 +1174,7 @@
             subdir_temp_files = make_random_device_files(
                 self.device, in_dir=subdir, num_files=4, prefix='subdir_')
 
-            paths = map(lambda temp_file: temp_file.full_path, temp_files)
+            paths = [x.full_path for x in temp_files]
             paths.append(subdir)
             self.device._simple_call(['pull'] + paths + [host_dir])
 
@@ -1292,7 +1363,7 @@
         """
         # The values that trigger things are 507 (512 - 5 bytes from shell protocol) + 1024*n
         # Probe some surrounding values as well, for the hell of it.
-        for base in [512] + range(1024, 1024 * 16, 1024):
+        for base in [512] + list(range(1024, 1024 * 16, 1024)):
             for offset in [-6, -5, -4]:
                 length = base + offset
                 cmd = ['dd', 'if=/dev/zero', 'bs={}'.format(length), 'count=1', '2>/dev/null;'
@@ -1327,10 +1398,10 @@
 
                 sock = socket.create_connection(("localhost", local_port))
                 with contextlib.closing(sock):
-                    bytesWritten = sock.send("a" * size)
+                    bytesWritten = sock.send(b"a" * size)
                     self.assertEqual(size, bytesWritten)
                     readBytes = sock.recv(4096)
-                    self.assertEqual("foo\n", readBytes)
+                    self.assertEqual(b"foo\n", readBytes)
 
                 thread.join()
         finally:
@@ -1361,13 +1432,13 @@
 
         s.sendall(adb_length_prefixed(transport_string))
         response = s.recv(4)
-        self.assertEquals(b"OKAY", response)
+        self.assertEqual(b"OKAY", response)
 
         shell_string = "shell:sleep 0.5; dd if=/dev/zero bs=1m count=1 status=none; echo foo"
         s.sendall(adb_length_prefixed(shell_string))
 
         response = s.recv(4)
-        self.assertEquals(b"OKAY", response)
+        self.assertEqual(b"OKAY", response)
 
         # Spawn a thread that dumps garbage into the socket until failure.
         def spam():
@@ -1390,7 +1461,7 @@
                 break
             received += read
 
-        self.assertEquals(1024 * 1024 + len("foo\n"), len(received))
+        self.assertEqual(1024 * 1024 + len("foo\n"), len(received))
         thread.join()
 
 
diff --git a/adb/tls/Android.bp b/adb/tls/Android.bp
new file mode 100644
index 0000000..e5204f3
--- /dev/null
+++ b/adb/tls/Android.bp
@@ -0,0 +1,72 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_defaults {
+    name: "libadb_tls_connection_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    srcs: [
+        "adb_ca_list.cpp",
+        "tls_connection.cpp",
+    ],
+    target: {
+        windows: {
+            compile_multilib: "first",
+            enabled: true,
+        },
+    },
+    export_include_dirs: ["include"],
+
+    host_supported: true,
+    recovery_available: true,
+
+    visibility: [
+        "//bootable/recovery/minadbd:__subpackages__",
+        "//system/core/adb:__subpackages__",
+    ],
+
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "liblog",
+        "libssl",
+    ],
+}
+
+cc_library {
+    name: "libadb_tls_connection",
+    defaults: ["libadb_tls_connection_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+        "test_com.android.adbd",
+    ],
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_tls_connection_static",
+    defaults: ["libadb_tls_connection_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+}
diff --git a/adb/tls/adb_ca_list.cpp b/adb/tls/adb_ca_list.cpp
new file mode 100644
index 0000000..36afe42
--- /dev/null
+++ b/adb/tls/adb_ca_list.cpp
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/tls/adb_ca_list.h"
+
+#include <iomanip>
+#include <sstream>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <openssl/ssl.h>
+
+namespace adb {
+namespace tls {
+
+namespace {
+
+// CA issuer identifier to distinguished embedded keys. Also has version
+// information appended to the end of the string (e.g. "AdbKey-0").
+static constexpr int kAdbKeyIdentifierNid = NID_organizationName;
+static constexpr char kAdbKeyIdentifierV0[] = "AdbKey-0";
+
+// Where we store the actual data
+static constexpr int kAdbKeyValueNid = NID_commonName;
+
+// TODO: Remove this once X509_NAME_add_entry_by_NID is fixed to use const unsigned char*
+// https://boringssl-review.googlesource.com/c/boringssl/+/39764
+int X509_NAME_add_entry_by_NID_const(X509_NAME* name, int nid, int type, const unsigned char* bytes,
+                                     int len, int loc, int set) {
+    return X509_NAME_add_entry_by_NID(name, nid, type, const_cast<unsigned char*>(bytes), len, loc,
+                                      set);
+}
+
+bool IsHexDigit(char c) {
+    return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f');
+}
+
+// Wrapper around X509_NAME_get_text_by_NID that first calculates the size
+// of the string. Returns empty string on failure.
+std::optional<std::string> GetX509NameTextByNid(X509_NAME* name, int nid) {
+    // |len| is the len of the text excluding the final null
+    int len = X509_NAME_get_text_by_NID(name, nid, nullptr, -1);
+    if (len <= 0) {
+        return std::nullopt;
+    }
+
+    // Include the space for the final null byte
+    std::vector<char> buf(len + 1, '\0');
+    CHECK(X509_NAME_get_text_by_NID(name, nid, buf.data(), buf.size()));
+    return std::make_optional(std::string(buf.data()));
+}
+
+}  // namespace
+
+// Takes an encoded public key and generates a X509_NAME that can be used in
+// TlsConnection::SetClientCAList(), to allow the client to figure out which of
+// its keys it should try to use in the TLS handshake.
+bssl::UniquePtr<X509_NAME> CreateCAIssuerFromEncodedKey(std::string_view key) {
+    // "O=AdbKey-0;CN=<key>;"
+    CHECK(!key.empty());
+
+    std::string identifier = kAdbKeyIdentifierV0;
+    bssl::UniquePtr<X509_NAME> name(X509_NAME_new());
+    CHECK(X509_NAME_add_entry_by_NID_const(name.get(), kAdbKeyIdentifierNid, MBSTRING_ASC,
+                                           reinterpret_cast<const uint8_t*>(identifier.data()),
+                                           identifier.size(), -1, 0));
+
+    CHECK(X509_NAME_add_entry_by_NID_const(name.get(), kAdbKeyValueNid, MBSTRING_ASC,
+                                           reinterpret_cast<const uint8_t*>(key.data()), key.size(),
+                                           -1, 0));
+    return name;
+}
+
+// Parses a CA issuer and returns the encoded key, if any.
+std::optional<std::string> ParseEncodedKeyFromCAIssuer(X509_NAME* issuer) {
+    CHECK(issuer);
+
+    auto buf = GetX509NameTextByNid(issuer, kAdbKeyIdentifierNid);
+    if (!buf) {
+        return std::nullopt;
+    }
+
+    // Check for supported versions
+    if (*buf == kAdbKeyIdentifierV0) {
+        return GetX509NameTextByNid(issuer, kAdbKeyValueNid);
+    }
+    return std::nullopt;
+}
+
+std::string SHA256BitsToHexString(std::string_view sha256) {
+    CHECK_EQ(sha256.size(), static_cast<size_t>(SHA256_DIGEST_LENGTH));
+    std::stringstream ss;
+    auto* u8 = reinterpret_cast<const uint8_t*>(sha256.data());
+    ss << std::uppercase << std::setfill('0') << std::hex;
+    // Convert to hex-string representation
+    for (size_t i = 0; i < SHA256_DIGEST_LENGTH; ++i) {
+        // Need to cast to something bigger than one byte, or
+        // stringstream will interpret it as a char value.
+        ss << std::setw(2) << static_cast<uint16_t>(u8[i]);
+    }
+    return ss.str();
+}
+
+std::optional<std::string> SHA256HexStringToBits(std::string_view sha256_str) {
+    if (sha256_str.size() != SHA256_DIGEST_LENGTH * 2) {
+        return std::nullopt;
+    }
+
+    std::string result;
+    for (size_t i = 0; i < SHA256_DIGEST_LENGTH; ++i) {
+        auto bytestr = std::string(sha256_str.substr(i * 2, 2));
+        if (!IsHexDigit(bytestr[0]) || !IsHexDigit(bytestr[1])) {
+            LOG(ERROR) << "SHA256 string has invalid non-hex chars";
+            return std::nullopt;
+        }
+        result += static_cast<char>(std::stol(bytestr, nullptr, 16));
+    }
+    return result;
+}
+
+}  // namespace tls
+}  // namespace adb
diff --git a/adb/tls/include/adb/tls/adb_ca_list.h b/adb/tls/include/adb/tls/adb_ca_list.h
new file mode 100644
index 0000000..a1ab9a7
--- /dev/null
+++ b/adb/tls/include/adb/tls/adb_ca_list.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <openssl/base.h>
+#include <optional>
+#include <string>
+
+// These APIs is used to embed adbd's known public keys into client-allowed CA
+// issuer list that can indicate to the client which key to use.
+namespace adb {
+namespace tls {
+
+// Takes an encoded public key and generates a X509_NAME that can be used in
+// TlsConnection::SetClientCAList(), to allow the client to figure out which of
+// its keys it should try to use in the TLS handshake. This is guaranteed to
+// return a valid X509_NAME, given a non-empty key.
+bssl::UniquePtr<X509_NAME> CreateCAIssuerFromEncodedKey(std::string_view key);
+
+// Parses a CA issuer and returns the encoded key, if any. On failure, returns
+// nullopt.
+std::optional<std::string> ParseEncodedKeyFromCAIssuer(X509_NAME* issuer);
+
+// Converts SHA256 bits to a hex string representation. |sha256| must be exactly
+// |SHA256_DIGEST_LENGTH| in size.
+std::string SHA256BitsToHexString(std::string_view sha256);
+
+// Converts a valid SHA256 hex string to the actual bits. Returns nullopt on
+// failure.
+std::optional<std::string> SHA256HexStringToBits(std::string_view sha256_str);
+
+}  // namespace tls
+}  // namespace adb
diff --git a/adb/tls/include/adb/tls/tls_connection.h b/adb/tls/include/adb/tls/tls_connection.h
new file mode 100644
index 0000000..bc5b98a
--- /dev/null
+++ b/adb/tls/include/adb/tls/tls_connection.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <string_view>
+#include <vector>
+
+#include <android-base/unique_fd.h>
+#include <openssl/ssl.h>
+#include <openssl/x509.h>
+
+namespace adb {
+namespace tls {
+
+class TlsConnection {
+  public:
+    // This class will require both client and server to exchange valid
+    // certificates.
+    enum class Role {
+        Server,
+        Client,
+    };
+
+    enum class TlsError : uint8_t {
+        Success = 0,
+        // An error indicating that we rejected the peer's certificate.
+        CertificateRejected,
+        // An error indicating that the peer rejected our certificate.
+        PeerRejectedCertificate,
+        // Add more if needed
+        UnknownFailure,
+    };
+
+    using CertVerifyCb = std::function<int(X509_STORE_CTX*)>;
+    using SetCertCb = std::function<int(SSL*)>;
+
+    virtual ~TlsConnection() = default;
+
+    // Adds a trusted certificate to the list for the SSL connection.
+    // During the handshake phase, it will check the list of trusted certificates.
+    // The connection will fail if the peer's certificate is not in the list. If
+    // you would like to accept any certificate, use #SetCertVerifyCallback and
+    // set your callback to always return 1.
+    //
+    // Returns true if |cert| was successfully added, false otherwise.
+    virtual bool AddTrustedCertificate(std::string_view cert) = 0;
+
+    // Sets a custom certificate verify callback. |cb| must return 1 if the
+    // certificate is trusted. Otherwise, return 0 if not.
+    virtual void SetCertVerifyCallback(CertVerifyCb cb) = 0;
+
+    // Configures a client |ca_list| that the server sends to the client in the
+    // CertificateRequest message.
+    virtual void SetClientCAList(STACK_OF(X509_NAME) * ca_list) = 0;
+
+    // Sets a callback that will be called to select a certificate. See
+    // https://commondatastorage.googleapis.com/chromium-boringssl-docs/ssl.h.html#SSL_CTX_set_cert_cb
+    // for more details.
+    virtual void SetCertificateCallback(SetCertCb cb) = 0;
+
+    // Exports a value derived from the master secret used in the TLS
+    // connection. This value should be used alongside any PAKE to ensure the
+    // peer is the intended peer. |length| is the requested length for the
+    // keying material. This is only valid after |DoHandshake| succeeds.
+    virtual std::vector<uint8_t> ExportKeyingMaterial(size_t length) = 0;
+
+    // Enable client-side check on whether server accepted the handshake. In TLS
+    // 1.3, client will not know the server rejected the handshake until after
+    // performing a read operation. Basically, this will perform an
+    // SSL_peek right after the handshake and see whether that succeeds.
+    //
+    // IMPORTANT: this will only work if the protocol is a server-speaks-first
+    // type. Enabling this for the server is a no-op. This is disabled by
+    // default.
+    virtual void EnableClientPostHandshakeCheck(bool enable) = 0;
+
+    // Starts the handshake process. Returns TlsError::Success if handshake
+    // succeeded.
+    virtual TlsError DoHandshake() = 0;
+
+    // Reads |size| bytes and returns the data. The returned data has either
+    // size |size| or zero, in which case the read failed.
+    virtual std::vector<uint8_t> ReadFully(size_t size) = 0;
+
+    // Overloaded ReadFully method, which accepts a buffer for writing in.
+    // Returns true iff exactly |size| amount of data was written into |buf|,
+    // false otherwise.
+    virtual bool ReadFully(void* buf, size_t size) = 0;
+
+    // Writes |size| bytes. Returns true if all |size| bytes were read.
+    // Returns false otherwise.
+    virtual bool WriteFully(std::string_view data) = 0;
+
+    // Create a new TlsConnection instance. |cert| and |priv_key| cannot be
+    // empty.
+    static std::unique_ptr<TlsConnection> Create(Role role, std::string_view cert,
+                                                 std::string_view priv_key,
+                                                 android::base::borrowed_fd fd);
+
+    // Helper to set the certificate and key strings to a SSL client/server.
+    // Useful when in the set-certificate callback.
+    static bool SetCertAndKey(SSL* ssl, std::string_view cert_chain, std::string_view priv_key);
+
+  protected:
+    TlsConnection() = default;
+};  // TlsConnection
+
+}  // namespace tls
+}  // namespace adb
diff --git a/adb/tls/tests/Android.bp b/adb/tls/tests/Android.bp
new file mode 100644
index 0000000..198de58
--- /dev/null
+++ b/adb/tls/tests/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "adb_tls_connection_test",
+    srcs: [
+        "adb_ca_list_test.cpp",
+        "tls_connection_test.cpp",
+    ],
+
+    compile_multilib: "first",
+
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libcrypto_utils",
+        "libssl",
+    ],
+
+    // Let's statically link them so we don't have to install it onto the
+    // system image for testing.
+    static_libs: [
+        "libadb_crypto_static",
+        "libadb_protos_static",
+        "libadb_tls_connection_static",
+    ],
+
+    test_suites: ["device-tests"],
+}
diff --git a/adb/tls/tests/adb_ca_list_test.cpp b/adb/tls/tests/adb_ca_list_test.cpp
new file mode 100644
index 0000000..c727e5f
--- /dev/null
+++ b/adb/tls/tests/adb_ca_list_test.cpp
@@ -0,0 +1,163 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AdbCAListTest"
+
+#include <gtest/gtest.h>
+
+#include <adb/tls/adb_ca_list.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <openssl/ssl.h>
+
+namespace adb {
+namespace tls {
+
+class AdbCAListTest : public testing::Test {
+  protected:
+    virtual void SetUp() override {}
+
+    virtual void TearDown() override {}
+};
+
+TEST_F(AdbCAListTest, SHA256BitsToHexString_BadParam) {
+    // Should crash if not exactly SHA256_DIGEST_LENGTH size
+    ASSERT_DEATH(
+            {
+                // empty
+                std::string sha;
+                SHA256BitsToHexString(sha);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                std::string sha(1, 0x80);
+                SHA256BitsToHexString(sha);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                std::string sha(SHA256_DIGEST_LENGTH - 1, 0x80);
+                SHA256BitsToHexString(sha);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                std::string sha(SHA256_DIGEST_LENGTH + 1, 0x80);
+                SHA256BitsToHexString(sha);
+            },
+            "");
+}
+
+TEST_F(AdbCAListTest, SHA256HexStringToBits_BadParam) {
+    {
+        // empty
+        std::string sha_str;
+        auto res = SHA256HexStringToBits(sha_str);
+        EXPECT_FALSE(res.has_value());
+    }
+    {
+        std::string sha_str(1, 'a');
+        auto res = SHA256HexStringToBits(sha_str);
+        EXPECT_FALSE(res.has_value());
+    }
+    {
+        std::string sha_str(SHA256_DIGEST_LENGTH * 2 - 1, 'a');
+        auto res = SHA256HexStringToBits(sha_str);
+        EXPECT_FALSE(res.has_value());
+    }
+    {
+        std::string sha_str(SHA256_DIGEST_LENGTH * 2 + 1, 'a');
+        auto res = SHA256HexStringToBits(sha_str);
+        EXPECT_FALSE(res.has_value());
+    }
+    {
+        // Non-hex chars
+        std::string sha_str(SHA256_DIGEST_LENGTH * 2, 'a');
+        sha_str[32] = 'x';
+        auto res = SHA256HexStringToBits(sha_str);
+        EXPECT_FALSE(res.has_value());
+    }
+}
+
+TEST_F(AdbCAListTest, SHA256BitsToHexString_ValidParam) {
+    uint8_t ct = 0;
+    // Test every possible byte
+    std::vector<std::string> expectedStr = {
+            "000102030405060708090A0B0C0D0E0F"
+            "101112131415161718191A1B1C1D1E1F",
+
+            "202122232425262728292A2B2C2D2E2F"
+            "303132333435363738393A3B3C3D3E3F",
+
+            "404142434445464748494A4B4C4D4E4F"
+            "505152535455565758595A5B5C5D5E5F",
+
+            "606162636465666768696A6B6C6D6E6F"
+            "707172737475767778797A7B7C7D7E7F",
+
+            "808182838485868788898A8B8C8D8E8F"
+            "909192939495969798999A9B9C9D9E9F",
+
+            "A0A1A2A3A4A5A6A7A8A9AAABACADAEAF"
+            "B0B1B2B3B4B5B6B7B8B9BABBBCBDBEBF",
+
+            "C0C1C2C3C4C5C6C7C8C9CACBCCCDCECF"
+            "D0D1D2D3D4D5D6D7D8D9DADBDCDDDEDF",
+
+            "E0E1E2E3E4E5E6E7E8E9EAEBECEDEEEF"
+            "F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF",
+    };
+
+    for (auto& expected : expectedStr) {
+        std::string sha;
+        while (sha.size() < SHA256_DIGEST_LENGTH) {
+            sha += ct++;
+        }
+
+        auto sha_str = SHA256BitsToHexString(sha);
+        EXPECT_EQ(expected, sha_str);
+
+        // try to convert back to bits
+        auto out_sha = SHA256HexStringToBits(sha_str);
+        ASSERT_TRUE(out_sha.has_value());
+        EXPECT_EQ(*out_sha, sha);
+    }
+}
+
+TEST_F(AdbCAListTest, CreateCAIssuerFromEncodedKey_EmptyKey) {
+    ASSERT_DEATH({ auto issuer = CreateCAIssuerFromEncodedKey(""); }, "");
+}
+
+TEST_F(AdbCAListTest, Smoke) {
+    {
+        std::string key =
+                "A45BC1FF6C89BF0E"
+                "65F9BA153FBC9876"
+                "4969B4113F1CF878"
+                "EEF9BF1C3F9C9227";
+        auto issuer = CreateCAIssuerFromEncodedKey(key);
+        ASSERT_NE(issuer, nullptr);
+
+        // Try to parse the encoded key out of the X509_NAME
+        auto out_key = ParseEncodedKeyFromCAIssuer(issuer.get());
+        ASSERT_TRUE(out_key.has_value());
+        EXPECT_EQ(key, *out_key);
+    }
+}
+
+}  // namespace tls
+}  // namespace adb
diff --git a/adb/tls/tests/tls_connection_test.cpp b/adb/tls/tests/tls_connection_test.cpp
new file mode 100644
index 0000000..27bc1c9
--- /dev/null
+++ b/adb/tls/tests/tls_connection_test.cpp
@@ -0,0 +1,608 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AdbWifiTlsConnectionTest"
+
+#include <thread>
+
+#include <gtest/gtest.h>
+
+#include <adb/crypto/rsa_2048_key.h>
+#include <adb/crypto/x509_generator.h>
+#include <adb/tls/adb_ca_list.h>
+#include <adb/tls/tls_connection.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <openssl/ssl.h>
+
+using namespace adb::crypto;
+
+namespace adb {
+namespace tls {
+
+using android::base::unique_fd;
+using TlsError = TlsConnection::TlsError;
+
+// Test X.509 certificates (RSA 2048)
+static const std::string kTestRsa2048ServerCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIDFzCCAf+gAwIBAgIBATANBgkqhkiG9w0BAQsFADAtMQswCQYDVQQGEwJVUzEQ\n"
+        "MA4GA1UECgwHQW5kcm9pZDEMMAoGA1UEAwwDQWRiMB4XDTIwMDEyMTIyMjU1NVoX\n"
+        "DTMwMDExODIyMjU1NVowLTELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJvaWQx\n"
+        "DDAKBgNVBAMMA0FkYjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAK8E\n"
+        "2Ck9TfuKlz7wqWdMfknjZ1luFDp2IHxAUZzh/F6jeI2dOFGAjpeloSnGOE86FIaT\n"
+        "d1EvpyTh7nBwbrLZAA6XFZTo7Bl6BdNOQdqb2d2+cLEN0inFxqUIycevRtohUE1Y\n"
+        "FHM9fg442X1jOTWXjDZWeiqFWo95paAPhzm6pWqfJK1+YKfT1LsWZpYqJGGQE5pi\n"
+        "C3qOBYYgFpoXMxTYJNoZo3uOYEdM6upc8/vh15nMgIxX/ymJxEY5BHPpZPPWjXLg\n"
+        "BfzVaV9fUfv0JT4HQ4t2WvxC3cD/UsjWp2a6p454uUp2ENrANa+jRdRJepepg9D2\n"
+        "DKsx9L8zjc5Obqexrt0CAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8B\n"
+        "Af8EBAMCAYYwHQYDVR0OBBYEFDFW+8GTErwoZN5Uu9KyY4QdGYKpMA0GCSqGSIb3\n"
+        "DQEBCwUAA4IBAQBCDEn6SHXGlq5TU7J8cg1kRPd9bsJW+0hDuKSq0REXDkl0PcBf\n"
+        "fy282Agg9enKPPKmnpeQjM1dmnxdM8tT8LIUbMl779i3fn6v9HJVB+yG4gmRFThW\n"
+        "c+AGlBnrIT820cX/gU3h3R3FTahfsq+1rrSJkEgHyuC0HYeRyveSckBdaEOLvx0S\n"
+        "toun+32JJl5hWydpUUZhE9Mbb3KHBRM2YYZZU9JeJ08Apjl+3lRUeMAUwI5fkAAu\n"
+        "z/1SqnuGL96bd8P5ixdkA1+rF8FPhodGcq9mQOuUGP9g5HOXjaNoJYvwVRUdLeGh\n"
+        "cP/ReOTwQIzM1K5a83p8cX8AGGYmM7dQp7ec\n"
+        "-----END CERTIFICATE-----\n";
+
+static const std::string kTestRsa2048ServerPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCvBNgpPU37ipc+\n"
+        "8KlnTH5J42dZbhQ6diB8QFGc4fxeo3iNnThRgI6XpaEpxjhPOhSGk3dRL6ck4e5w\n"
+        "cG6y2QAOlxWU6OwZegXTTkHam9ndvnCxDdIpxcalCMnHr0baIVBNWBRzPX4OONl9\n"
+        "Yzk1l4w2VnoqhVqPeaWgD4c5uqVqnyStfmCn09S7FmaWKiRhkBOaYgt6jgWGIBaa\n"
+        "FzMU2CTaGaN7jmBHTOrqXPP74deZzICMV/8picRGOQRz6WTz1o1y4AX81WlfX1H7\n"
+        "9CU+B0OLdlr8Qt3A/1LI1qdmuqeOeLlKdhDawDWvo0XUSXqXqYPQ9gyrMfS/M43O\n"
+        "Tm6nsa7dAgMBAAECggEAFCS2bPdUKIgjbzLgtHW+hT+J2hD20rcHdyAp+dNH/2vI\n"
+        "yLfDJHJA4chGMRondKA704oDw2bSJxxlG9t83326lB35yxPhye7cM8fqgWrK8PVl\n"
+        "tU22FhO1ZgeJvb9OeXWNxKZyDW9oOOJ8eazNXVMuEo+dFj7B6l3MXQyHJPL2mJDm\n"
+        "u9ofFLdypX+gJncVO0oW0FNJnEUn2MMwHDNlo7gc4WdQuidPkuZItKRGcB8TTGF3\n"
+        "Ka1/2taYdTQ4Aq//Z84LlFvE0zD3T4c8LwYYzOzD4gGGTXvft7vSHzIun1S8YLRS\n"
+        "dEKXdVjtaFhgH3uUe4j+1b/vMvSHeoGBNX/G88GD+wKBgQDWUYVlMVqc9HD2IeYi\n"
+        "EfBcNwAJFJkh51yAl5QbUBgFYgFJVkkS/EDxEGFPvEmI3/pAeQFHFY13BI466EPs\n"
+        "o8Z8UUwWDp+Z1MFHHKQKnFakbsZbZlbqjJ9VJsqpezbpWhMHTOmcG0dmE7rf0lyM\n"
+        "eQv9slBB8qp2NEUs5Of7f2C2bwKBgQDRDq4nUuMQF1hbjM05tGKSIwkobmGsLspv\n"
+        "TMhkM7fq4RpbFHmbNgsFqMhcqYZ8gY6/scv5KCuAZ4yHUkbqwf5h+QCwrJ4uJeUJ\n"
+        "ZgJfHus2mmcNSo8FwSkNoojIQtzcbJav7bs2K9VTuertk/i7IJLApU4FOZZ5pghN\n"
+        "EXu0CZF1cwKBgDWFGhjRIF29tU/h20R60llU6s9Zs3wB+NmsALJpZ/ZAKS4VPB5f\n"
+        "nCAXBRYSYRKrTCU5kpYbzb4BBzuysPOxWmnFK4j+keCqfrGxd02nCQP7HdHJVr8v\n"
+        "6sIq88UrHeVcNxBFprjzHvtgxfQK5k22FMZ/9wbhAKyQFQ5HA5+MiaxFAoGAIcZZ\n"
+        "ZIkDninnYIMS9OursShv5lRO+15j3i9tgKLKZ+wOMgDQ1L6acUOfezj4PU1BHr8+\n"
+        "0PYocQpJreMhCfRlgLaV4fVBaPs+UZJld7CrF5tCYudUy/01ALrtlk0XGZWBktK5\n"
+        "mDrksC4tQkzRtonAq9cJD9cJ9IVaefkFH0UcdvkCgYBpZj50VLeGhnHHBnkJRlV1\n"
+        "fV+/P6PAq6RtqjA6O9Qdaoj5V3w2d63aQcQXQLJjH2BBmtCIy47r04rFvZpbCxP7\n"
+        "NH/OnK9NHpk2ucRTe8TAnVbvF/TZzPJoIxAO/D3OWaW6df4R8en8u6GYzWFglAyT\n"
+        "sydGT8yfWD1FYUWgfrVRbg==\n"
+        "-----END PRIVATE KEY-----\n";
+
+static const std::string kTestRsa2048ClientCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIDFzCCAf+gAwIBAgIBATANBgkqhkiG9w0BAQsFADAtMQswCQYDVQQGEwJVUzEQ\n"
+        "MA4GA1UECgwHQW5kcm9pZDEMMAoGA1UEAwwDQWRiMB4XDTIwMDEyMTIyMjU1NloX\n"
+        "DTMwMDExODIyMjU1NlowLTELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJvaWQx\n"
+        "DDAKBgNVBAMMA0FkYjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAI3a\n"
+        "EXh1S5FTbet7JVONswffRPaekdIK53cb8SnAbSO9X5OLA4zGwdkrBvDTsd96SKrp\n"
+        "JxmoNOE1DhbZh05KPlWAPkGKacjGWaz+S7biDOL0I6aaLbTlU/il1Ub9olPSBVUx\n"
+        "0nhdtEFgIOzddnP6/1KmyIIeRxS5lTKeg4avqUkZNXkz/wL1dHBFL7FNFf0SCcbo\n"
+        "tsub/deFbjZ27LTDN+SIBgFttTNqC5NTvoBAoMdyCOAgNYwaHO+fKiK3edfJieaw\n"
+        "7HD8qqmQxcpCtRlA8CUPj7GfR+WHiCJmlevhnkFXCo56R1BS0F4wuD4KPdSWt8gc\n"
+        "27ejH/9/z2cKo/6SLJMCAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8B\n"
+        "Af8EBAMCAYYwHQYDVR0OBBYEFO/Mr5ygqqpyU/EHM9v7RDvcqaOkMA0GCSqGSIb3\n"
+        "DQEBCwUAA4IBAQAH33KMouzF2DYbjg90KDrDQr4rq3WfNb6P743knxdUFuvb+40U\n"
+        "QjC2OJZHkSexH7wfG/y6ic7vfCfF4clNs3QvU1lEjOZC57St8Fk7mdNdsWLwxEMD\n"
+        "uePFz0dvclSxNUHyCVMqNxddzQYzxiDWQRmXWrUBliMduQqEQelcxW2yDtg8bj+s\n"
+        "aMpR1ra9scaD4jzIZIIxLoOS9zBMuNRbgP217sZrniyGMhzoI1pZ/izN4oXpyH7O\n"
+        "THuaCzzRT3ph2f8EgmHSodz3ttgSf2DHzi/Ez1xUkk7NOlgNtmsxEdrM47+cC5ae\n"
+        "fIf2V+1o1JW8J7D11RmRbNPh3vfisueB4f88\n"
+        "-----END CERTIFICATE-----\n";
+
+static const std::string kTestRsa2048ClientPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCN2hF4dUuRU23r\n"
+        "eyVTjbMH30T2npHSCud3G/EpwG0jvV+TiwOMxsHZKwbw07Hfekiq6ScZqDThNQ4W\n"
+        "2YdOSj5VgD5BimnIxlms/ku24gzi9COmmi205VP4pdVG/aJT0gVVMdJ4XbRBYCDs\n"
+        "3XZz+v9SpsiCHkcUuZUynoOGr6lJGTV5M/8C9XRwRS+xTRX9EgnG6LbLm/3XhW42\n"
+        "duy0wzfkiAYBbbUzaguTU76AQKDHcgjgIDWMGhzvnyoit3nXyYnmsOxw/KqpkMXK\n"
+        "QrUZQPAlD4+xn0flh4giZpXr4Z5BVwqOekdQUtBeMLg+Cj3UlrfIHNu3ox//f89n\n"
+        "CqP+kiyTAgMBAAECggEAAa64eP6ggCob1P3c73oayYPIbvRqiQdAFOrr7Vwu7zbr\n"
+        "z0rde+n6RU0mrpc+4NuzyPMtrOGQiatLbidJB5Cx3z8U00ovqbCl7PtcgorOhFKe\n"
+        "VEzihebCcYyQqbWQcKtpDMhOgBxRwFoXieJb6VGXfa96FAZalCWvXgOrTl7/BF2X\n"
+        "qMqIm9nJi+yS5tIO8VdOsOmrMWRH/b/ENUcef4WpLoxTXr0EEgyKWraeZ/hhXo1e\n"
+        "z29dZKqdr9wMsq11NPsRddwS94jnDkXTo+EQyWVTfB7gb6yyp07s8jysaDb21tVv\n"
+        "UXB9MRhDV1mOv0ncXfXZ4/+4A2UahmZaLDAVLaat4QKBgQDAVRredhGRGl2Nkic3\n"
+        "KvZCAfyxug788CgasBdEiouz19iCCwcgMIDwnq0s3/WM7h/laCamT2x38riYDnpq\n"
+        "rkYMfuVtU9CjEL9pTrdfwbIRhTwYNqADaPz2mXwQUhRXutE5TIdgxxC/a+ZTh0qN\n"
+        "S+vhTj/4hf0IZhMh5Nqj7IPExQKBgQC8zxEzhmSGjys0GuE6Wl6Doo2TpiR6vwvi\n"
+        "xPLU9lmIz5eca/Rd/eERioFQqeoIWDLzx52DXuz6rUoQhbJWz9hP3yqCwXD+pbNP\n"
+        "oDJqDDbCC4IMYEb0IK/PEPH+gIpnTjoFcW+ecKDFG7W5Lt05J8WsJsfOaJvMrOU+\n"
+        "dLXq3IgxdwKBgQC5RAFq0v6e8G+3hFaEHL0z3igkpt3zJf7rnj37hx2FMmDa+3Z0\n"
+        "umQp5B9af61PgL12xLmeMBmC/Wp1BlVDV/Yf6Uhk5Hyv5t0KuomHEtTNbbLyfAPs\n"
+        "5P/vJu/L5NS1oT4S3LX3MineyjgGs+bLbpub3z1dzutrYLADUSiPCK/xJQKBgBQt\n"
+        "nQ0Ao+Wtj1R2OvPdjJRM3wyUiPmFSWPm4HzaBx+T8AQLlYYmB9O0FbXlMtnJc0iS\n"
+        "YMcVcgYoVu4FG9YjSF7g3s4yljzgwJUV7c1fmMqMKE3iTDLy+1cJ3JLycdgwiArk\n"
+        "4KTyLHxkRbuQwpvFIF8RlfD9RQlOwQE3v+llwDhpAoGBAL6XG6Rp6mBoD2Ds5c9R\n"
+        "943yYgSUes3ji1SI9zFqeJtj8Ml/enuK1xu+8E/BxB0//+vgZsH6i3i8GFwygKey\n"
+        "CGJF8CbiHc3EJc3NQIIRXcni/CGacf0HwC6m+PGFDBIpA4H2iDpVvCSofxttQiq0\n"
+        "/Z7HXmXUvZHVyYi/QzX2Gahj\n"
+        "-----END PRIVATE KEY-----\n";
+
+static const std::string kTestRsa2048UnknownPrivKey =
+        "-----BEGIN PRIVATE KEY-----\n"
+        "MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCrIhr+CS+6UI0w\n"
+        "CTaVzQAicKBe6X531LeQAGYx7j5RLHR1QIoJ0WCc5msmXKe2VzcWuLbVdTGAIP1H\n"
+        "mwbPqlbO4ioxeJhiDv+WPuLG8+j4Iw1Yqxt8cfohxjfvNmIQM8aF5hGyyaaTetDF\n"
+        "EYWONoYCBC4WnFWgYCPb8mzWXlhHE3F66GnHpc32zydPTg3ZurGvSsFf7fNY9yRw\n"
+        "8WtwPiI6mpRxt+n2bQUp+LZ+g/3rXLFPg8uWDGYG7IvLluWc9gR9lxjL64t6ryLU\n"
+        "2cm7eTfDgLw/B1F/wEgCJDnby1JgQ4rq6klJO3BR2ooUr/7T343y5njG5hQJreV7\n"
+        "5ZnSmRLZAgMBAAECggEABPrfeHZFuWkj7KqN+DbAmt/2aMCodZ3+7/20+528WkIe\n"
+        "CvXzdmTth+9UHagLWNzpnVuHdYd9JuZ+3F00aelh8JAIDIu++naHhUSj9ohtRoBF\n"
+        "oIeNK5ZJAj/Zi5hkauaIz8dxyyc/VdIYfm2bundXd7pNqYqH2tyFWp6PwH67GKlZ\n"
+        "1lC7o8gKAK8sz9g0Ctdoe+hDqAsvYFCW4EWDM2qboucSgn8g3E/Gux/KrpXVv7d0\n"
+        "PMQ60m+dyTOCMGqXIoDR3TAvQR7ex5sQ/QZSREdxKy878s/2FY4ktxtCUWlhrmcI\n"
+        "VKtrDOGEKwNoiMluf2635rsVq2e01XhQlmdxbRFU0QKBgQDjOhhD1m9duFTQ2b+J\n"
+        "Xfn6m8Rs7sZqO4Az7gLOWmD/vYWlK4n2nZsh6u5/cB1N+PA+ncvvV4yKJAlLHxbT\n"
+        "pVvfzJ/jbUsj/NJg/w7+KYC9gXgRmBonuG2gRZF/5Otdlza4vMcoSkqGjlGxJyzL\n"
+        "+9umEziN3tEYMRwipYvt7BgbUQKBgQDAzaXryJ3YD3jpecy/+fSnQvFjpyeDRqU1\n"
+        "KDA9nxN5tJN6bnKhUlMhy64SsgvVX9jUuN7cK+qYV0uzdBn6kIAJNLWTdbtH93+e\n"
+        "vNVgluR3jmixW4QfY9vfZKdXZbVGNc0DFMi1vJqgxTgQ5Mq5PxxxRL4FsAF840V1\n"
+        "Wu9uhU0NCQKBgBfjga2QG8E0oeYbHmHouWE5gxsYt09v1fifqzfalJwOZsCIpUaC\n"
+        "J08Xjd9kABC0fT14BXqyL5pOU5PMPvAdUF1k++JDGUU9TTjZV9AsuNYziFYBMa6/\n"
+        "WvcgmT1i6cO7JAuj/SQlO1SOHdSME8+WOO9q0eVIaZ8repPB58YprhchAoGBAJyR\n"
+        "Y8AJdkTSq7nNszvi245IioYGY8vzPo3gSOyBlesrfOfbcTMYC3JSWNXNyFZKM2br\n"
+        "ie75qtRzb4IXMlGLrq3LI/jPjnpuvjBF4HFDl9yOxO3iB3UGPrM2pb4PVhnh7s4l\n"
+        "vqf2tQsBnPn7EbVFTu+ch0NPHqYwWWNnqS/zCBMhAoGBAIkYjOE0iD9W2FXee6VL\n"
+        "iN8wDqlqsGEEtLvykIDmTmM+ZX5ftQuPo18khpE9wQKmJ5OpoVTYIP1UsJFBakgo\n"
+        "+dGaf6xVuPvmydNFqixlW3z227n4Px6GX7CXlCaAleTeItezli+dWf/9astwTA3x\n"
+        "IazYzsxUUpZFC4dJ1GhBn3y1\n"
+        "-----END PRIVATE KEY-----\n";
+
+static const std::string kTestRsa2048UnknownCert =
+        "-----BEGIN CERTIFICATE-----\n"
+        "MIIDFzCCAf+gAwIBAgIBATANBgkqhkiG9w0BAQsFADAtMQswCQYDVQQGEwJVUzEQ\n"
+        "MA4GA1UECgwHQW5kcm9pZDEMMAoGA1UEAwwDQWRiMB4XDTIwMDEyNDE4MzMwNVoX\n"
+        "DTMwMDEyMTE4MzMwNVowLTELMAkGA1UEBhMCVVMxEDAOBgNVBAoMB0FuZHJvaWQx\n"
+        "DDAKBgNVBAMMA0FkYjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKsi\n"
+        "Gv4JL7pQjTAJNpXNACJwoF7pfnfUt5AAZjHuPlEsdHVAignRYJzmayZcp7ZXNxa4\n"
+        "ttV1MYAg/UebBs+qVs7iKjF4mGIO/5Y+4sbz6PgjDVirG3xx+iHGN+82YhAzxoXm\n"
+        "EbLJppN60MURhY42hgIELhacVaBgI9vybNZeWEcTcXroacelzfbPJ09ODdm6sa9K\n"
+        "wV/t81j3JHDxa3A+IjqalHG36fZtBSn4tn6D/etcsU+Dy5YMZgbsi8uW5Zz2BH2X\n"
+        "GMvri3qvItTZybt5N8OAvD8HUX/ASAIkOdvLUmBDiurqSUk7cFHaihSv/tPfjfLm\n"
+        "eMbmFAmt5XvlmdKZEtkCAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8B\n"
+        "Af8EBAMCAYYwHQYDVR0OBBYEFDtRSOm1ilhnq6bKN4qJ1ekK/PAkMA0GCSqGSIb3\n"
+        "DQEBCwUAA4IBAQAP6Q8/OxnBA3BO8oxKer0tjI4rZMefUhbAKUWXYjTTNEBm5//b\n"
+        "lVGP2RptO7bxj8w1L3rxsjmVcv2TqBOhrbJqvGVPE2ntoYlFhBBkRvmxuu1y5W9V\n"
+        "uJU7SF9lNmDXShTURULu3P8GdeT1HGeXzWQ4x7VhY9a3VIbmN5VxjB+3C6hYZxSs\n"
+        "DCpmidu/sR+n5Azlh6oqrhOxmv17PuF/ioTUsHd4y2Z41IvvO47oghxNDtboUUsg\n"
+        "LfsM1MOxVC9PqOfQphFU4i8owNIYzBMadDLw+1TSQj0ALqZVyc9Dq+WDFdz+JAE+\n"
+        "k7TkVU06UPGVSnLVzJeYwGCXQp3apBszY9vO\n"
+        "-----END CERTIFICATE-----\n";
+
+struct CAIssuerField {
+    int nid;
+    std::vector<uint8_t> val;
+};
+using CAIssuer = std::vector<CAIssuerField>;
+static std::vector<CAIssuer> kCAIssuers = {
+        {
+                {NID_commonName, {'a', 'b', 'c', 'd', 'e'}},
+                {NID_organizationName, {'d', 'e', 'f', 'g'}},
+        },
+        {
+                {NID_commonName, {'h', 'i', 'j', 'k', 'l', 'm'}},
+                {NID_countryName, {'n', 'o'}},
+        },
+};
+
+class AdbWifiTlsConnectionTest : public testing::Test {
+  protected:
+    virtual void SetUp() override {
+        android::base::Socketpair(SOCK_STREAM, &server_fd_, &client_fd_);
+        server_ = TlsConnection::Create(TlsConnection::Role::Server, kTestRsa2048ServerCert,
+                                        kTestRsa2048ServerPrivKey, server_fd_);
+        client_ = TlsConnection::Create(TlsConnection::Role::Client, kTestRsa2048ClientCert,
+                                        kTestRsa2048ClientPrivKey, client_fd_);
+        ASSERT_NE(nullptr, server_);
+        ASSERT_NE(nullptr, client_);
+    }
+
+    virtual void TearDown() override {
+        WaitForClientConnection();
+        // Shutdown the SSL connection first.
+        server_.reset();
+        client_.reset();
+    }
+
+    bssl::UniquePtr<STACK_OF(X509_NAME)> GetCAIssuerList() {
+        bssl::UniquePtr<STACK_OF(X509_NAME)> ret(sk_X509_NAME_new_null());
+        for (auto& issuer : kCAIssuers) {
+            bssl::UniquePtr<X509_NAME> name(X509_NAME_new());
+            for (auto& attr : issuer) {
+                CHECK(X509_NAME_add_entry_by_NID(name.get(), attr.nid, MBSTRING_ASC,
+                                                 attr.val.data(), attr.val.size(), -1, 0));
+            }
+
+            CHECK(bssl::PushToStack(ret.get(), std::move(name)));
+        }
+
+        return ret;
+    }
+
+    void StartClientHandshakeAsync(TlsError expected) {
+        client_thread_ = std::thread([=]() { EXPECT_EQ(client_->DoHandshake(), expected); });
+    }
+
+    void WaitForClientConnection() {
+        if (client_thread_.joinable()) {
+            client_thread_.join();
+        }
+    }
+
+    unique_fd server_fd_;
+    unique_fd client_fd_;
+    const std::vector<uint8_t> msg_{0xff, 0xab, 0x32, 0xf6, 0x12, 0x56};
+    std::unique_ptr<TlsConnection> server_;
+    std::unique_ptr<TlsConnection> client_;
+    std::thread client_thread_;
+};
+
+TEST_F(AdbWifiTlsConnectionTest, InvalidCreationParams) {
+    // Verify that passing empty certificate/private key results in a crash.
+    ASSERT_DEATH(
+            {
+                server_ = TlsConnection::Create(TlsConnection::Role::Server, "",
+                                                kTestRsa2048ServerPrivKey, server_fd_);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                server_ = TlsConnection::Create(TlsConnection::Role::Server, kTestRsa2048ServerCert,
+                                                "", server_fd_);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                client_ = TlsConnection::Create(TlsConnection::Role::Client, "",
+                                                kTestRsa2048ClientPrivKey, client_fd_);
+            },
+            "");
+    ASSERT_DEATH(
+            {
+                client_ = TlsConnection::Create(TlsConnection::Role::Client, kTestRsa2048ClientCert,
+                                                "", client_fd_);
+            },
+            "");
+}
+
+TEST_F(AdbWifiTlsConnectionTest, NoCertificateVerification) {
+    // Allow any certificate
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    StartClientHandshakeAsync(TlsError::Success);
+
+    // Handshake should succeed
+    ASSERT_EQ(server_->DoHandshake(), TlsError::Success);
+    WaitForClientConnection();
+
+    // Test client/server read and writes
+    client_thread_ = std::thread([&]() {
+        EXPECT_TRUE(client_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+        // Try with overloaded ReadFully
+        std::vector<uint8_t> buf(msg_.size());
+        ASSERT_TRUE(client_->ReadFully(buf.data(), msg_.size()));
+        EXPECT_EQ(buf, msg_);
+    });
+
+    auto data = server_->ReadFully(msg_.size());
+    EXPECT_EQ(data, msg_);
+    EXPECT_TRUE(server_->WriteFully(
+            std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, NoTrustedCertificates) {
+    StartClientHandshakeAsync(TlsError::CertificateRejected);
+
+    // Handshake should not succeed
+    ASSERT_EQ(server_->DoHandshake(), TlsError::PeerRejectedCertificate);
+    WaitForClientConnection();
+
+    // All writes and reads should fail
+    client_thread_ = std::thread([&]() {
+        // Client write, server read should fail
+        EXPECT_FALSE(client_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+        auto data = client_->ReadFully(msg_.size());
+        EXPECT_EQ(data.size(), 0);
+    });
+
+    auto data = server_->ReadFully(msg_.size());
+    EXPECT_EQ(data.size(), 0);
+    EXPECT_FALSE(server_->WriteFully(
+            std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, AddTrustedCertificates) {
+    // Add peer certificates
+    EXPECT_TRUE(client_->AddTrustedCertificate(kTestRsa2048ServerCert));
+    EXPECT_TRUE(server_->AddTrustedCertificate(kTestRsa2048ClientCert));
+
+    StartClientHandshakeAsync(TlsError::Success);
+
+    // Handshake should succeed
+    ASSERT_EQ(server_->DoHandshake(), TlsError::Success);
+    WaitForClientConnection();
+
+    // All read writes should succeed
+    client_thread_ = std::thread([&]() {
+        EXPECT_TRUE(client_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+        auto data = client_->ReadFully(msg_.size());
+        EXPECT_EQ(data, msg_);
+    });
+
+    auto data = server_->ReadFully(msg_.size());
+    EXPECT_EQ(data, msg_);
+    EXPECT_TRUE(server_->WriteFully(
+            std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, AddTrustedCertificates_ClientWrongCert) {
+    // Server trusts a certificate, client has the wrong certificate
+    EXPECT_TRUE(server_->AddTrustedCertificate(kTestRsa2048UnknownCert));
+    // Client accepts any certificate
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+
+    // Without enabling EnableClientPostHandshakeCheck(), DoHandshake() will
+    // succeed, because in TLS 1.3, the client doesn't get notified if the
+    // server rejected the certificate until a read operation is called.
+    StartClientHandshakeAsync(TlsError::Success);
+
+    // Handshake should fail for server, succeed for client
+    ASSERT_EQ(server_->DoHandshake(), TlsError::CertificateRejected);
+    WaitForClientConnection();
+
+    // Client writes will succeed, everything else will fail.
+    client_thread_ = std::thread([&]() {
+        EXPECT_TRUE(client_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+        auto data = client_->ReadFully(msg_.size());
+        EXPECT_EQ(data.size(), 0);
+    });
+
+    auto data = server_->ReadFully(msg_.size());
+    EXPECT_EQ(data.size(), 0);
+    EXPECT_FALSE(server_->WriteFully(
+            std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, ExportKeyingMaterial) {
+    // Allow any certificate
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+
+    // Add peer certificates
+    EXPECT_TRUE(client_->AddTrustedCertificate(kTestRsa2048ServerCert));
+    EXPECT_TRUE(server_->AddTrustedCertificate(kTestRsa2048ClientCert));
+
+    StartClientHandshakeAsync(TlsError::Success);
+
+    // Handshake should succeed
+    ASSERT_EQ(server_->DoHandshake(), TlsError::Success);
+    WaitForClientConnection();
+
+    // Verify the client and server's exported key material match.
+    const size_t key_size = 64;
+    auto client_key_material = client_->ExportKeyingMaterial(key_size);
+    ASSERT_FALSE(client_key_material.empty());
+    auto server_key_material = server_->ExportKeyingMaterial(key_size);
+    ASSERT_TRUE(!server_key_material.empty());
+    ASSERT_EQ(client_key_material.size(), key_size);
+    ASSERT_EQ(client_key_material, server_key_material);
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetCertVerifyCallback_ClientAcceptsServerRejects) {
+    // Client accepts all
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    // Server rejects all
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 0; });
+    // Client handshake should succeed, because in TLS 1.3, client does not
+    // realize that the peer rejected the certificate until after a read
+    // operation.
+    StartClientHandshakeAsync(TlsError::Success);
+
+    // Server handshake should fail
+    ASSERT_EQ(server_->DoHandshake(), TlsError::CertificateRejected);
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetCertVerifyCallback_ClientAcceptsServerRejects_PostHSCheck) {
+    // Client accepts all
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    // Client should now get a failure in the handshake
+    client_->EnableClientPostHandshakeCheck(true);
+    // Server rejects all
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 0; });
+
+    // Client handshake should fail because server rejects everything
+    StartClientHandshakeAsync(TlsError::PeerRejectedCertificate);
+
+    // Server handshake should fail
+    ASSERT_EQ(server_->DoHandshake(), TlsError::CertificateRejected);
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetCertVerifyCallback_ClientRejectsServerAccepts) {
+    // Client rejects all
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 0; });
+    // Server accepts all
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    // Client handshake should fail
+    StartClientHandshakeAsync(TlsError::CertificateRejected);
+
+    // Server handshake should fail
+    ASSERT_EQ(server_->DoHandshake(), TlsError::PeerRejectedCertificate);
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetCertVerifyCallback_ClientRejectsServerAccepts_PostHSCheck) {
+    // Client rejects all
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 0; });
+    // This shouldn't affect the error types returned in the
+    // #SetCertVerifyCallback_ClientRejectsServerAccepts test, since
+    // the failure is still within the TLS 1.3 handshake.
+    client_->EnableClientPostHandshakeCheck(true);
+    // Server accepts all
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+
+    // Client handshake should fail
+    StartClientHandshakeAsync(TlsError::CertificateRejected);
+
+    // Server handshake should fail
+    ASSERT_EQ(server_->DoHandshake(), TlsError::PeerRejectedCertificate);
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, EnableClientPostHandshakeCheck_ClientWrongCert) {
+    client_->AddTrustedCertificate(kTestRsa2048ServerCert);
+    // client's DoHandshake() will fail if the server rejected the certificate
+    client_->EnableClientPostHandshakeCheck(true);
+
+    // Add peer certificates
+    EXPECT_TRUE(server_->AddTrustedCertificate(kTestRsa2048UnknownCert));
+
+    // Handshake should fail for client
+    StartClientHandshakeAsync(TlsError::PeerRejectedCertificate);
+
+    // Handshake should fail for server
+    ASSERT_EQ(server_->DoHandshake(), TlsError::CertificateRejected);
+    WaitForClientConnection();
+
+    // All read writes should fail
+    client_thread_ = std::thread([&]() {
+        EXPECT_FALSE(client_->WriteFully(
+                std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+        auto data = client_->ReadFully(msg_.size());
+        EXPECT_EQ(data.size(), 0);
+    });
+
+    auto data = server_->ReadFully(msg_.size());
+    EXPECT_EQ(data.size(), 0);
+    EXPECT_FALSE(server_->WriteFully(
+            std::string_view(reinterpret_cast<const char*>(msg_.data()), msg_.size())));
+
+    WaitForClientConnection();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetClientCAList_Empty) {
+    // Setting an empty CA list should not crash
+    server_->SetClientCAList(nullptr);
+    ASSERT_DEATH(
+            {
+                // Client cannot use this API
+                client_->SetClientCAList(nullptr);
+            },
+            "");
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetClientCAList_Smoke) {
+    auto bsslIssuerList = GetCAIssuerList();
+    server_->SetClientCAList(bsslIssuerList.get());
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+
+    client_thread_ = std::thread([&]() {
+        client_->SetCertificateCallback([&](SSL* ssl) -> int {
+            const STACK_OF(X509_NAME)* received = SSL_get_client_CA_list(ssl);
+            EXPECT_NE(received, nullptr);
+            const size_t num_names = sk_X509_NAME_num(received);
+            EXPECT_EQ(kCAIssuers.size(), num_names);
+
+            // Client initially registered with the wrong key. Let's change it
+            // here to verify this callback actually changes the client
+            // certificate to the right one.
+            EXPECT_TRUE(TlsConnection::SetCertAndKey(ssl, kTestRsa2048UnknownCert,
+                                                     kTestRsa2048UnknownPrivKey));
+
+            const size_t buf_size = 256;
+            uint8_t buf[buf_size];
+            size_t idx = 0;
+            for (auto& issuer : kCAIssuers) {
+                auto* name = sk_X509_NAME_value(received, idx++);
+                for (auto& attr : issuer) {
+                    EXPECT_EQ(X509_NAME_get_text_by_NID(name, attr.nid,
+                                                        reinterpret_cast<char*>(buf), buf_size),
+                              attr.val.size());
+                    std::vector<uint8_t> out(buf, buf + attr.val.size());
+                    EXPECT_EQ(out, attr.val);
+                }
+            }
+
+            return 1;
+        });
+        // Client handshake should succeed
+        ASSERT_EQ(client_->DoHandshake(), TlsError::Success);
+    });
+
+    EXPECT_TRUE(server_->AddTrustedCertificate(kTestRsa2048UnknownCert));
+    // Server handshake should succeed
+    ASSERT_EQ(server_->DoHandshake(), TlsError::Success);
+    client_thread_.join();
+}
+
+TEST_F(AdbWifiTlsConnectionTest, SetClientCAList_AdbCAList) {
+    bssl::UniquePtr<STACK_OF(X509_NAME)> ca_list(sk_X509_NAME_new_null());
+    std::string keyhash = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    auto issuer = CreateCAIssuerFromEncodedKey(keyhash);
+    ASSERT_TRUE(bssl::PushToStack(ca_list.get(), std::move(issuer)));
+    server_->SetClientCAList(ca_list.get());
+    client_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+
+    client_thread_ = std::thread([&]() {
+        client_->SetCertificateCallback([&](SSL* ssl) -> int {
+            // Client initially registered with a certificate that is not trusted by
+            // the server. Let's test that we can change the certificate to the
+            // trusted one here.
+            const STACK_OF(X509_NAME)* received = SSL_get_client_CA_list(ssl);
+            EXPECT_NE(received, nullptr);
+            const size_t num_names = sk_X509_NAME_num(received);
+            EXPECT_EQ(1, num_names);
+
+            auto* name = sk_X509_NAME_value(received, 0);
+            EXPECT_NE(name, nullptr);
+            auto enc_key = ParseEncodedKeyFromCAIssuer(name);
+            EXPECT_EQ(keyhash, enc_key);
+
+            return 1;
+        });
+        // Client handshake should succeed
+        ASSERT_EQ(client_->DoHandshake(), TlsError::Success);
+    });
+
+    server_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+    // Server handshake should succeed
+    ASSERT_EQ(server_->DoHandshake(), TlsError::Success);
+    client_thread_.join();
+}
+}  // namespace tls
+}  // namespace adb
diff --git a/adb/tls/tls_connection.cpp b/adb/tls/tls_connection.cpp
new file mode 100644
index 0000000..853cdac
--- /dev/null
+++ b/adb/tls/tls_connection.cpp
@@ -0,0 +1,394 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "adb/tls/tls_connection.h"
+
+#include <algorithm>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+using android::base::borrowed_fd;
+
+namespace adb {
+namespace tls {
+
+namespace {
+
+static constexpr char kExportedKeyLabel[] = "adb-label";
+
+class TlsConnectionImpl : public TlsConnection {
+  public:
+    explicit TlsConnectionImpl(Role role, std::string_view cert, std::string_view priv_key,
+                               borrowed_fd fd);
+    ~TlsConnectionImpl() override;
+
+    bool AddTrustedCertificate(std::string_view cert) override;
+    void SetCertVerifyCallback(CertVerifyCb cb) override;
+    void SetCertificateCallback(SetCertCb cb) override;
+    void SetClientCAList(STACK_OF(X509_NAME) * ca_list) override;
+    std::vector<uint8_t> ExportKeyingMaterial(size_t length) override;
+    void EnableClientPostHandshakeCheck(bool enable) override;
+    TlsError DoHandshake() override;
+    std::vector<uint8_t> ReadFully(size_t size) override;
+    bool ReadFully(void* buf, size_t size) override;
+    bool WriteFully(std::string_view data) override;
+
+    static bssl::UniquePtr<EVP_PKEY> EvpPkeyFromPEM(std::string_view pem);
+    static bssl::UniquePtr<CRYPTO_BUFFER> BufferFromPEM(std::string_view pem);
+
+  private:
+    static int SSLSetCertVerifyCb(X509_STORE_CTX* ctx, void* opaque);
+    static int SSLSetCertCb(SSL* ssl, void* opaque);
+
+    static bssl::UniquePtr<X509> X509FromBuffer(bssl::UniquePtr<CRYPTO_BUFFER> buffer);
+    static const char* SSLErrorString();
+    void Invalidate();
+    TlsError GetFailureReason(int err);
+    const char* RoleToString() { return role_ == Role::Server ? kServerRoleStr : kClientRoleStr; }
+
+    Role role_;
+    bssl::UniquePtr<EVP_PKEY> priv_key_;
+    bssl::UniquePtr<CRYPTO_BUFFER> cert_;
+
+    bssl::UniquePtr<STACK_OF(X509_NAME)> ca_list_;
+    bssl::UniquePtr<SSL_CTX> ssl_ctx_;
+    bssl::UniquePtr<SSL> ssl_;
+    std::vector<bssl::UniquePtr<X509>> known_certificates_;
+    bool client_verify_post_handshake_ = false;
+
+    CertVerifyCb cert_verify_cb_;
+    SetCertCb set_cert_cb_;
+    borrowed_fd fd_;
+    static constexpr char kClientRoleStr[] = "[client]: ";
+    static constexpr char kServerRoleStr[] = "[server]: ";
+};  // TlsConnectionImpl
+
+TlsConnectionImpl::TlsConnectionImpl(Role role, std::string_view cert, std::string_view priv_key,
+                                     borrowed_fd fd)
+    : role_(role), fd_(fd) {
+    CHECK(!cert.empty() && !priv_key.empty());
+    LOG(INFO) << RoleToString() << "Initializing adbwifi TlsConnection";
+    cert_ = BufferFromPEM(cert);
+    CHECK(cert_);
+    priv_key_ = EvpPkeyFromPEM(priv_key);
+    CHECK(priv_key_);
+}
+
+TlsConnectionImpl::~TlsConnectionImpl() {
+    // shutdown the SSL connection
+    if (ssl_ != nullptr) {
+        SSL_shutdown(ssl_.get());
+    }
+}
+
+// static
+const char* TlsConnectionImpl::SSLErrorString() {
+    auto sslerr = ERR_peek_last_error();
+    return ERR_reason_error_string(sslerr);
+}
+
+// static
+bssl::UniquePtr<EVP_PKEY> TlsConnectionImpl::EvpPkeyFromPEM(std::string_view pem) {
+    bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(pem.data(), pem.size()));
+    return bssl::UniquePtr<EVP_PKEY>(PEM_read_bio_PrivateKey(bio.get(), nullptr, nullptr, nullptr));
+}
+
+// static
+bssl::UniquePtr<CRYPTO_BUFFER> TlsConnectionImpl::BufferFromPEM(std::string_view pem) {
+    bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(pem.data(), pem.size()));
+    char* name = nullptr;
+    char* header = nullptr;
+    uint8_t* data = nullptr;
+    long data_len = 0;
+
+    if (!PEM_read_bio(bio.get(), &name, &header, &data, &data_len)) {
+        LOG(ERROR) << "Failed to read certificate";
+        return nullptr;
+    }
+    OPENSSL_free(name);
+    OPENSSL_free(header);
+
+    auto ret = bssl::UniquePtr<CRYPTO_BUFFER>(CRYPTO_BUFFER_new(data, data_len, nullptr));
+    OPENSSL_free(data);
+    return ret;
+}
+
+// static
+bssl::UniquePtr<X509> TlsConnectionImpl::X509FromBuffer(bssl::UniquePtr<CRYPTO_BUFFER> buffer) {
+    if (!buffer) {
+        return nullptr;
+    }
+    return bssl::UniquePtr<X509>(X509_parse_from_buffer(buffer.get()));
+}
+
+// static
+int TlsConnectionImpl::SSLSetCertVerifyCb(X509_STORE_CTX* ctx, void* opaque) {
+    auto* p = reinterpret_cast<TlsConnectionImpl*>(opaque);
+    return p->cert_verify_cb_(ctx);
+}
+
+// static
+int TlsConnectionImpl::SSLSetCertCb(SSL* ssl, void* opaque) {
+    auto* p = reinterpret_cast<TlsConnectionImpl*>(opaque);
+    return p->set_cert_cb_(ssl);
+}
+
+bool TlsConnectionImpl::AddTrustedCertificate(std::string_view cert) {
+    // Create X509 buffer from the certificate string
+    auto buf = X509FromBuffer(BufferFromPEM(cert));
+    if (buf == nullptr) {
+        LOG(ERROR) << RoleToString() << "Failed to create a X509 buffer for the certificate.";
+        return false;
+    }
+    known_certificates_.push_back(std::move(buf));
+    return true;
+}
+
+void TlsConnectionImpl::SetCertVerifyCallback(CertVerifyCb cb) {
+    cert_verify_cb_ = cb;
+}
+
+void TlsConnectionImpl::SetCertificateCallback(SetCertCb cb) {
+    set_cert_cb_ = cb;
+}
+
+void TlsConnectionImpl::SetClientCAList(STACK_OF(X509_NAME) * ca_list) {
+    CHECK(role_ == Role::Server);
+    ca_list_.reset(ca_list != nullptr ? SSL_dup_CA_list(ca_list) : nullptr);
+}
+
+std::vector<uint8_t> TlsConnectionImpl::ExportKeyingMaterial(size_t length) {
+    if (ssl_.get() == nullptr) {
+        return {};
+    }
+
+    std::vector<uint8_t> out(length);
+    if (SSL_export_keying_material(ssl_.get(), out.data(), out.size(), kExportedKeyLabel,
+                                   sizeof(kExportedKeyLabel), nullptr, 0, false) == 0) {
+        return {};
+    }
+    return out;
+}
+
+void TlsConnectionImpl::EnableClientPostHandshakeCheck(bool enable) {
+    client_verify_post_handshake_ = enable;
+}
+
+TlsConnection::TlsError TlsConnectionImpl::GetFailureReason(int err) {
+    switch (ERR_GET_REASON(err)) {
+        case SSL_R_SSLV3_ALERT_BAD_CERTIFICATE:
+        case SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE:
+        case SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED:
+        case SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED:
+        case SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN:
+        case SSL_R_TLSV1_ALERT_ACCESS_DENIED:
+        case SSL_R_TLSV1_ALERT_UNKNOWN_CA:
+        case SSL_R_TLSV1_CERTIFICATE_REQUIRED:
+            return TlsError::PeerRejectedCertificate;
+        case SSL_R_CERTIFICATE_VERIFY_FAILED:
+            return TlsError::CertificateRejected;
+        default:
+            return TlsError::UnknownFailure;
+    }
+}
+
+TlsConnection::TlsError TlsConnectionImpl::DoHandshake() {
+    LOG(INFO) << RoleToString() << "Starting adbwifi tls handshake";
+    ssl_ctx_.reset(SSL_CTX_new(TLS_method()));
+    // TODO: Remove set_max_proto_version() once external/boringssl is updated
+    // past
+    // https://boringssl.googlesource.com/boringssl/+/58d56f4c59969a23e5f52014e2651c76fea2f877
+    if (ssl_ctx_.get() == nullptr ||
+        !SSL_CTX_set_min_proto_version(ssl_ctx_.get(), TLS1_3_VERSION) ||
+        !SSL_CTX_set_max_proto_version(ssl_ctx_.get(), TLS1_3_VERSION)) {
+        LOG(ERROR) << RoleToString() << "Failed to create SSL context";
+        return TlsError::UnknownFailure;
+    }
+
+    // Register user-supplied known certificates
+    for (auto const& cert : known_certificates_) {
+        if (X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx_.get()), cert.get()) == 0) {
+            LOG(ERROR) << RoleToString() << "Unable to add certificates into the X509_STORE";
+            return TlsError::UnknownFailure;
+        }
+    }
+
+    // Custom certificate verification
+    if (cert_verify_cb_) {
+        SSL_CTX_set_cert_verify_callback(ssl_ctx_.get(), SSLSetCertVerifyCb, this);
+    }
+
+    // set select certificate callback, if any.
+    if (set_cert_cb_) {
+        SSL_CTX_set_cert_cb(ssl_ctx_.get(), SSLSetCertCb, this);
+    }
+
+    // Server-allowed client CA list
+    if (ca_list_ != nullptr) {
+        bssl::UniquePtr<STACK_OF(X509_NAME)> names(SSL_dup_CA_list(ca_list_.get()));
+        SSL_CTX_set_client_CA_list(ssl_ctx_.get(), names.release());
+    }
+
+    // Register our certificate and private key.
+    std::vector<CRYPTO_BUFFER*> cert_chain = {
+            cert_.get(),
+    };
+    if (!SSL_CTX_set_chain_and_key(ssl_ctx_.get(), cert_chain.data(), cert_chain.size(),
+                                   priv_key_.get(), nullptr)) {
+        LOG(ERROR) << RoleToString()
+                   << "Unable to register the certificate chain file and private key ["
+                   << SSLErrorString() << "]";
+        Invalidate();
+        return TlsError::UnknownFailure;
+    }
+
+    SSL_CTX_set_verify(ssl_ctx_.get(), SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, nullptr);
+
+    // Okay! Let's try to do the handshake!
+    ssl_.reset(SSL_new(ssl_ctx_.get()));
+    if (!SSL_set_fd(ssl_.get(), fd_.get())) {
+        LOG(ERROR) << RoleToString() << "SSL_set_fd failed. [" << SSLErrorString() << "]";
+        return TlsError::UnknownFailure;
+    }
+
+    switch (role_) {
+        case Role::Server:
+            SSL_set_accept_state(ssl_.get());
+            break;
+        case Role::Client:
+            SSL_set_connect_state(ssl_.get());
+            break;
+    }
+    if (SSL_do_handshake(ssl_.get()) != 1) {
+        LOG(ERROR) << RoleToString() << "Handshake failed in SSL_accept/SSL_connect ["
+                   << SSLErrorString() << "]";
+        auto sslerr = ERR_get_error();
+        Invalidate();
+        return GetFailureReason(sslerr);
+    }
+
+    if (client_verify_post_handshake_ && role_ == Role::Client) {
+        uint8_t check;
+        // Try to peek one byte for any failures. This assumes on success that
+        // the server actually sends something.
+        if (SSL_peek(ssl_.get(), &check, 1) <= 0) {
+            LOG(ERROR) << RoleToString() << "Post-handshake SSL_peek failed [" << SSLErrorString()
+                       << "]";
+            auto sslerr = ERR_get_error();
+            Invalidate();
+            return GetFailureReason(sslerr);
+        }
+    }
+
+    LOG(INFO) << RoleToString() << "Handshake succeeded.";
+    return TlsError::Success;
+}
+
+void TlsConnectionImpl::Invalidate() {
+    ssl_.reset();
+    ssl_ctx_.reset();
+}
+
+std::vector<uint8_t> TlsConnectionImpl::ReadFully(size_t size) {
+    std::vector<uint8_t> buf(size);
+    if (!ReadFully(buf.data(), buf.size())) {
+        return {};
+    }
+
+    return buf;
+}
+
+bool TlsConnectionImpl::ReadFully(void* buf, size_t size) {
+    CHECK_GT(size, 0U);
+    if (!ssl_) {
+        LOG(ERROR) << RoleToString() << "Tried to read on a null SSL connection";
+        return false;
+    }
+
+    size_t offset = 0;
+    uint8_t* p8 = reinterpret_cast<uint8_t*>(buf);
+    while (size > 0) {
+        int bytes_read =
+                SSL_read(ssl_.get(), p8 + offset, std::min(static_cast<size_t>(INT_MAX), size));
+        if (bytes_read <= 0) {
+            LOG(ERROR) << RoleToString() << "SSL_read failed [" << SSLErrorString() << "]";
+            return false;
+        }
+        size -= bytes_read;
+        offset += bytes_read;
+    }
+    return true;
+}
+
+bool TlsConnectionImpl::WriteFully(std::string_view data) {
+    CHECK(!data.empty());
+    if (!ssl_) {
+        LOG(ERROR) << RoleToString() << "Tried to read on a null SSL connection";
+        return false;
+    }
+
+    while (!data.empty()) {
+        int bytes_out = SSL_write(ssl_.get(), data.data(),
+                                  std::min(static_cast<size_t>(INT_MAX), data.size()));
+        if (bytes_out <= 0) {
+            LOG(ERROR) << RoleToString() << "SSL_write failed [" << SSLErrorString() << "]";
+            return false;
+        }
+        data = data.substr(bytes_out);
+    }
+    return true;
+}
+}  // namespace
+
+// static
+std::unique_ptr<TlsConnection> TlsConnection::Create(TlsConnection::Role role,
+                                                     std::string_view cert,
+                                                     std::string_view priv_key, borrowed_fd fd) {
+    CHECK(!cert.empty());
+    CHECK(!priv_key.empty());
+
+    return std::make_unique<TlsConnectionImpl>(role, cert, priv_key, fd);
+}
+
+// static
+bool TlsConnection::SetCertAndKey(SSL* ssl, std::string_view cert, std::string_view priv_key) {
+    CHECK(ssl);
+    // Note: declaring these in local scope is okay because
+    // SSL_set_chain_and_key will increase the refcount (bssl::UpRef).
+    auto x509_cert = TlsConnectionImpl::BufferFromPEM(cert);
+    auto evp_pkey = TlsConnectionImpl::EvpPkeyFromPEM(priv_key);
+    if (x509_cert == nullptr || evp_pkey == nullptr) {
+        return false;
+    }
+
+    std::vector<CRYPTO_BUFFER*> cert_chain = {
+            x509_cert.get(),
+    };
+    if (!SSL_set_chain_and_key(ssl, cert_chain.data(), cert_chain.size(), evp_pkey.get(),
+                               nullptr)) {
+        LOG(ERROR) << "SSL_set_chain_and_key failed";
+        return false;
+    }
+
+    return true;
+}
+
+}  // namespace tls
+}  // namespace adb
diff --git a/adb/tools/Android.bp b/adb/tools/Android.bp
new file mode 100644
index 0000000..71e32b7
--- /dev/null
+++ b/adb/tools/Android.bp
@@ -0,0 +1,36 @@
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_binary_host {
+    name: "check_ms_os_desc",
+
+    defaults: ["adb_defaults"],
+
+    srcs: [
+        "check_ms_os_desc.cpp",
+    ],
+
+    static_libs: [
+        "libbase",
+        "libusb",
+    ],
+
+    stl: "libc++_static",
+
+    dist: {
+        targets: [
+            "sdk",
+        ],
+    },
+}
diff --git a/adb/tools/check_ms_os_desc.cpp b/adb/tools/check_ms_os_desc.cpp
new file mode 100644
index 0000000..8e85809
--- /dev/null
+++ b/adb/tools/check_ms_os_desc.cpp
@@ -0,0 +1,264 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <err.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <optional>
+#include <string>
+#include <vector>
+
+#include <libusb/libusb.h>
+
+static bool is_adb_device(libusb_device* device) {
+    libusb_device_descriptor device_desc;
+    libusb_get_device_descriptor(device, &device_desc);
+    if (device_desc.bDeviceClass != 0) {
+        return false;
+    }
+
+    libusb_config_descriptor* config_desc;
+    int rc = libusb_get_active_config_descriptor(device, &config_desc);
+    if (rc != 0) {
+        fprintf(stderr, "failed to get config descriptor for device %u:%u: %s\n",
+                libusb_get_bus_number(device), libusb_get_port_number(device),
+                libusb_error_name(rc));
+        return false;
+    }
+
+    for (size_t i = 0; i < config_desc->bNumInterfaces; ++i) {
+        const libusb_interface* interface = &config_desc->interface[i];
+        for (int j = 0; j < interface->num_altsetting; ++j) {
+            const libusb_interface_descriptor* interface_descriptor = &interface->altsetting[j];
+            if (interface_descriptor->bInterfaceClass == 0xff &&
+                interface_descriptor->bInterfaceSubClass == 0x42 &&
+                interface_descriptor->bInterfaceProtocol == 1) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+static std::optional<std::vector<uint8_t>> get_descriptor(libusb_device_handle* handle,
+                                                          uint8_t type, uint8_t index,
+                                                          uint16_t length) {
+    std::vector<uint8_t> result;
+    result.resize(length);
+    int rc = libusb_get_descriptor(handle, type, index, result.data(), result.size());
+    if (rc < 0) {
+        fprintf(stderr, "libusb_get_descriptor failed: %s\n", libusb_error_name(rc));
+        return std::nullopt;
+    }
+    result.resize(rc);
+    return result;
+}
+
+static std::optional<std::string> get_string_descriptor(libusb_device_handle* handle,
+                                                        uint8_t index) {
+    std::string result;
+    result.resize(4096);
+    int rc = libusb_get_string_descriptor_ascii(
+            handle, index, reinterpret_cast<uint8_t*>(result.data()), result.size());
+    if (rc < 0) {
+        fprintf(stderr, "libusb_get_string_descriptor_ascii failed: %s\n", libusb_error_name(rc));
+        return std::nullopt;
+    }
+    result.resize(rc);
+    return result;
+}
+
+static void check_ms_os_desc_v1(libusb_device_handle* device_handle, const std::string& serial) {
+    auto os_desc = get_descriptor(device_handle, 0x03, 0xEE, 0x12);
+    if (!os_desc) {
+        errx(1, "failed to retrieve MS OS descriptor");
+    }
+
+    if (os_desc->size() != 0x12) {
+        errx(1, "os descriptor size mismatch");
+    }
+
+    if (memcmp(os_desc->data() + 2, u"MSFT100\0", 14) != 0) {
+        errx(1, "os descriptor signature mismatch");
+    }
+
+    uint8_t vendor_code = (*os_desc)[16];
+    uint8_t pad = (*os_desc)[17];
+
+    if (pad != 0) {
+        errx(1, "os descriptor padding non-zero");
+    }
+
+    std::vector<uint8_t> data;
+    data.resize(0x10);
+    int rc = libusb_control_transfer(device_handle, 0xC0, vendor_code, 0x00, 0x04, data.data(),
+                                     data.size(), 0);
+    if (rc != 0x10) {
+        errx(1, "failed to retrieve MS OS v1 compat descriptor header: %s", libusb_error_name(rc));
+    }
+
+    struct __attribute__((packed)) ms_os_desc_v1_header {
+        uint32_t dwLength;
+        uint16_t bcdVersion;
+        uint16_t wIndex;
+        uint8_t bCount;
+        uint8_t reserved[7];
+    };
+    static_assert(sizeof(ms_os_desc_v1_header) == 0x10);
+
+    ms_os_desc_v1_header hdr;
+    memcpy(&hdr, data.data(), data.size());
+
+    data.resize(hdr.dwLength);
+    rc = libusb_control_transfer(device_handle, 0xC0, vendor_code, 0x00, 0x04, data.data(),
+                                 data.size(), 0);
+    if (static_cast<size_t>(rc) != data.size()) {
+        errx(1, "failed to retrieve MS OS v1 compat descriptor: %s", libusb_error_name(rc));
+    }
+
+    struct __attribute__((packed)) ms_os_desc_v1_function {
+        uint8_t bFirstInterfaceNumber;
+        uint8_t reserved1;
+        uint8_t compatibleID[8];
+        uint8_t subCompatibleID[8];
+        uint8_t reserved2[6];
+    };
+
+    if (sizeof(ms_os_desc_v1_header) + hdr.bCount * sizeof(ms_os_desc_v1_function) != data.size()) {
+        errx(1, "MS OS v1 compat descriptor size mismatch");
+    }
+
+    for (int i = 0; i < hdr.bCount; ++i) {
+        ms_os_desc_v1_function function;
+        memcpy(&function,
+               data.data() + sizeof(ms_os_desc_v1_header) + i * sizeof(ms_os_desc_v1_function),
+               sizeof(function));
+        if (memcmp("WINUSB\0\0", function.compatibleID, 8) == 0) {
+            return;
+        }
+    }
+
+    errx(1, "failed to find v1 MS OS descriptor specifying WinUSB for device %s", serial.c_str());
+}
+
+static void check_ms_os_desc_v2(libusb_device_handle* device_handle, const std::string& serial) {
+    libusb_bos_descriptor* bos;
+    int rc = libusb_get_bos_descriptor(device_handle, &bos);
+
+    if (rc != 0) {
+        fprintf(stderr, "failed to get bos descriptor for device %s\n", serial.c_str());
+        return;
+    }
+
+    for (size_t i = 0; i < bos->bNumDeviceCaps; ++i) {
+        libusb_bos_dev_capability_descriptor* desc = bos->dev_capability[i];
+        if (desc->bDescriptorType != LIBUSB_DT_DEVICE_CAPABILITY) {
+            errx(1, "invalid BOS descriptor type: %d", desc->bDescriptorType);
+        }
+
+        if (desc->bDevCapabilityType != 0x05 /* PLATFORM */) {
+            fprintf(stderr, "skipping non-platform dev capability: %#02x\n",
+                    desc->bDevCapabilityType);
+            continue;
+        }
+
+        if (desc->bLength < sizeof(*desc) + 16) {
+            errx(1, "received device capability descriptor not long enough to contain a UUID?");
+        }
+
+        char uuid[16];
+        memcpy(uuid, desc->dev_capability_data, 16);
+
+        constexpr uint8_t ms_os_uuid[16] = {0xD8, 0xDD, 0x60, 0xDF, 0x45, 0x89, 0x4C, 0xC7,
+                                            0x9C, 0xD2, 0x65, 0x9D, 0x9E, 0x64, 0x8A, 0x9F};
+        if (memcmp(uuid, ms_os_uuid, 16) != 0) {
+            fprintf(stderr, "skipping unknown UUID\n");
+            continue;
+        }
+
+        size_t data_length = desc->bLength - sizeof(*desc) - 16;
+        fprintf(stderr, "found MS OS 2.0 descriptor, length = %zu\n", data_length);
+
+        // Linux does not appear to support MS OS 2.0 Descriptors.
+        // TODO: If and when it does, verify that we're emitting them properly.
+    }
+}
+
+int main(int argc, char** argv) {
+    libusb_context* ctx;
+    if (libusb_init(&ctx) != 0) {
+        errx(1, "failed to initialize libusb context");
+    }
+
+    libusb_device** device_list = nullptr;
+    ssize_t device_count = libusb_get_device_list(ctx, &device_list);
+    if (device_count < 0) {
+        errx(1, "libusb_get_device_list failed");
+    }
+
+    const char* expected_serial = getenv("ANDROID_SERIAL");
+    bool found = false;
+
+    for (ssize_t i = 0; i < device_count; ++i) {
+        libusb_device* device = device_list[i];
+        if (!is_adb_device(device)) {
+            continue;
+        }
+
+        libusb_device_handle* device_handle = nullptr;
+        int rc = libusb_open(device, &device_handle);
+        if (rc != 0) {
+            fprintf(stderr, "failed to open device %u:%u: %s\n", libusb_get_bus_number(device),
+                    libusb_get_port_number(device), libusb_error_name(rc));
+            continue;
+        }
+
+        libusb_device_descriptor device_desc;
+        libusb_get_device_descriptor(device, &device_desc);
+
+        std::optional<std::string> serial =
+                get_string_descriptor(device_handle, device_desc.iSerialNumber);
+        if (!serial) {
+            errx(1, "failed to get serial for device %u:%u", libusb_get_bus_number(device),
+                 libusb_get_port_number(device));
+        }
+
+        if (expected_serial && *serial != expected_serial) {
+            fprintf(stderr, "skipping %s (wanted %s)\n", serial->c_str(), expected_serial);
+            continue;
+        }
+
+        // Check for MS OS Descriptor v1.
+        // https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdpeusb/c2f351f9-84d2-4a1b-9fe3-a6ca195f84d0
+        fprintf(stderr, "fetching v1 OS descriptor from device %s\n", serial->c_str());
+        check_ms_os_desc_v1(device_handle, *serial);
+        fprintf(stderr, "found v1 OS descriptor for device %s\n", serial->c_str());
+
+        // Read BOS for MS OS Descriptor 2.0 descriptors:
+        // http://download.microsoft.com/download/3/5/6/3563ED4A-F318-4B66-A181-AB1D8F6FD42D/MS_OS_2_0_desc.docx
+        fprintf(stderr, "fetching v2 OS descriptor from device %s\n", serial->c_str());
+        check_ms_os_desc_v2(device_handle, *serial);
+
+        found = true;
+    }
+
+    if (expected_serial && !found) {
+        errx(1, "failed to find device with serial %s", expected_serial);
+    }
+    return 0;
+}
diff --git a/adb/transport.cpp b/adb/transport.cpp
index 841865a..fe286de 100644
--- a/adb/transport.cpp
+++ b/adb/transport.cpp
@@ -36,6 +36,9 @@
 #include <set>
 #include <thread>
 
+#include <adb/crypto/rsa_2048_key.h>
+#include <adb/crypto/x509_generator.h>
+#include <adb/tls/tls_connection.h>
 #include <android-base/logging.h>
 #include <android-base/parsenetaddress.h>
 #include <android-base/stringprintf.h>
@@ -49,13 +52,16 @@
 #include "adb_io.h"
 #include "adb_trace.h"
 #include "adb_utils.h"
-#include "fdevent.h"
+#include "fdevent/fdevent.h"
 #include "sysdeps/chrono.h"
 
+using namespace adb::crypto;
+using namespace adb::tls;
 using android::base::ScopedLockAssertion;
+using TlsError = TlsConnection::TlsError;
 
 static void remove_transport(atransport* transport);
-static void transport_unref(atransport* transport);
+static void transport_destroy(atransport* transport);
 
 // TODO: unordered_map<TransportId, atransport*>
 static auto& transport_list = *new std::list<atransport*>();
@@ -66,6 +72,7 @@
 const char* const kFeatureShell2 = "shell_v2";
 const char* const kFeatureCmd = "cmd";
 const char* const kFeatureStat2 = "stat_v2";
+const char* const kFeatureLs2 = "ls_v2";
 const char* const kFeatureLibusb = "libusb";
 const char* const kFeaturePushSync = "push_sync";
 const char* const kFeatureApex = "apex";
@@ -73,6 +80,9 @@
 const char* const kFeatureAbb = "abb";
 const char* const kFeatureFixedPushSymlinkTimestamp = "fixed_push_symlink_timestamp";
 const char* const kFeatureAbbExec = "abb_exec";
+const char* const kFeatureRemountShell = "remount_shell";
+const char* const kFeatureSendRecv2 = "sendrecv_v2";
+const char* const kFeatureSendRecv2Brotli = "sendrecv_v2_brotli";
 
 namespace {
 
@@ -277,18 +287,7 @@
                    << "): started multiple times";
     }
 
-    read_thread_ = std::thread([this]() {
-        LOG(INFO) << this->transport_name_ << ": read thread spawning";
-        while (true) {
-            auto packet = std::make_unique<apacket>();
-            if (!underlying_->Read(packet.get())) {
-                PLOG(INFO) << this->transport_name_ << ": read failed";
-                break;
-            }
-            read_callback_(this, std::move(packet));
-        }
-        std::call_once(this->error_flag_, [this]() { this->error_callback_(this, "read failed"); });
-    });
+    StartReadThread();
 
     write_thread_ = std::thread([this]() {
         LOG(INFO) << this->transport_name_ << ": write thread spawning";
@@ -317,6 +316,46 @@
     started_ = true;
 }
 
+void BlockingConnectionAdapter::StartReadThread() {
+    read_thread_ = std::thread([this]() {
+        LOG(INFO) << this->transport_name_ << ": read thread spawning";
+        while (true) {
+            auto packet = std::make_unique<apacket>();
+            if (!underlying_->Read(packet.get())) {
+                PLOG(INFO) << this->transport_name_ << ": read failed";
+                break;
+            }
+
+            bool got_stls_cmd = false;
+            if (packet->msg.command == A_STLS) {
+                got_stls_cmd = true;
+            }
+
+            read_callback_(this, std::move(packet));
+
+            // If we received the STLS packet, we are about to perform the TLS
+            // handshake. So this read thread must stop and resume after the
+            // handshake completes otherwise this will interfere in the process.
+            if (got_stls_cmd) {
+                LOG(INFO) << this->transport_name_
+                          << ": Received STLS packet. Stopping read thread.";
+                return;
+            }
+        }
+        std::call_once(this->error_flag_, [this]() { this->error_callback_(this, "read failed"); });
+    });
+}
+
+bool BlockingConnectionAdapter::DoTlsHandshake(RSA* key, std::string* auth_key) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (read_thread_.joinable()) {
+        read_thread_.join();
+    }
+    bool success = this->underlying_->DoTlsHandshake(key, auth_key);
+    StartReadThread();
+    return success;
+}
+
 void BlockingConnectionAdapter::Reset() {
     {
         std::lock_guard<std::mutex> lock(mutex_);
@@ -386,8 +425,36 @@
     return true;
 }
 
+FdConnection::FdConnection(unique_fd fd) : fd_(std::move(fd)) {}
+
+FdConnection::~FdConnection() {}
+
+bool FdConnection::DispatchRead(void* buf, size_t len) {
+    if (tls_ != nullptr) {
+        // The TlsConnection doesn't allow 0 byte reads
+        if (len == 0) {
+            return true;
+        }
+        return tls_->ReadFully(buf, len);
+    }
+
+    return ReadFdExactly(fd_.get(), buf, len);
+}
+
+bool FdConnection::DispatchWrite(void* buf, size_t len) {
+    if (tls_ != nullptr) {
+        // The TlsConnection doesn't allow 0 byte writes
+        if (len == 0) {
+            return true;
+        }
+        return tls_->WriteFully(std::string_view(reinterpret_cast<const char*>(buf), len));
+    }
+
+    return WriteFdExactly(fd_.get(), buf, len);
+}
+
 bool FdConnection::Read(apacket* packet) {
-    if (!ReadFdExactly(fd_.get(), &packet->msg, sizeof(amessage))) {
+    if (!DispatchRead(&packet->msg, sizeof(amessage))) {
         D("remote local: read terminated (message)");
         return false;
     }
@@ -399,7 +466,7 @@
 
     packet->payload.resize(packet->msg.data_length);
 
-    if (!ReadFdExactly(fd_.get(), &packet->payload[0], packet->payload.size())) {
+    if (!DispatchRead(&packet->payload[0], packet->payload.size())) {
         D("remote local: terminated (data)");
         return false;
     }
@@ -408,13 +475,13 @@
 }
 
 bool FdConnection::Write(apacket* packet) {
-    if (!WriteFdExactly(fd_.get(), &packet->msg, sizeof(packet->msg))) {
+    if (!DispatchWrite(&packet->msg, sizeof(packet->msg))) {
         D("remote local: write terminated");
         return false;
     }
 
     if (packet->msg.data_length) {
-        if (!WriteFdExactly(fd_.get(), &packet->payload[0], packet->msg.data_length)) {
+        if (!DispatchWrite(&packet->payload[0], packet->msg.data_length)) {
             D("remote local: write terminated");
             return false;
         }
@@ -423,6 +490,56 @@
     return true;
 }
 
+bool FdConnection::DoTlsHandshake(RSA* key, std::string* auth_key) {
+    bssl::UniquePtr<EVP_PKEY> evp_pkey(EVP_PKEY_new());
+    if (!EVP_PKEY_set1_RSA(evp_pkey.get(), key)) {
+        LOG(ERROR) << "EVP_PKEY_set1_RSA failed";
+        return false;
+    }
+    auto x509 = GenerateX509Certificate(evp_pkey.get());
+    auto x509_str = X509ToPEMString(x509.get());
+    auto evp_str = Key::ToPEMString(evp_pkey.get());
+#ifdef _WIN32
+    int osh = cast_handle_to_int(adb_get_os_handle(fd_));
+#else
+    int osh = adb_get_os_handle(fd_);
+#endif
+
+#if ADB_HOST
+    tls_ = TlsConnection::Create(TlsConnection::Role::Client, x509_str, evp_str, osh);
+#else
+    tls_ = TlsConnection::Create(TlsConnection::Role::Server, x509_str, evp_str, osh);
+#endif
+    CHECK(tls_);
+#if ADB_HOST
+    // TLS 1.3 gives the client no message if the server rejected the
+    // certificate. This will enable a check in the tls connection to check
+    // whether the client certificate got rejected. Note that this assumes
+    // that, on handshake success, the server speaks first.
+    tls_->EnableClientPostHandshakeCheck(true);
+    // Add callback to set the certificate when server issues the
+    // CertificateRequest.
+    tls_->SetCertificateCallback(adb_tls_set_certificate);
+    // Allow any server certificate
+    tls_->SetCertVerifyCallback([](X509_STORE_CTX*) { return 1; });
+#else
+    // Add callback to check certificate against a list of known public keys
+    tls_->SetCertVerifyCallback(
+            [auth_key](X509_STORE_CTX* ctx) { return adbd_tls_verify_cert(ctx, auth_key); });
+    // Add the list of allowed client CA issuers
+    auto ca_list = adbd_tls_client_ca_list();
+    tls_->SetClientCAList(ca_list.get());
+#endif
+
+    auto err = tls_->DoHandshake();
+    if (err == TlsError::Success) {
+        return true;
+    }
+
+    tls_.reset();
+    return false;
+}
+
 void FdConnection::Close() {
     adb_shutdown(fd_.get());
     fd_.reset();
@@ -542,9 +659,7 @@
     // for the first time, even if no update occurred.
     if (tracker->update_needed) {
         tracker->update_needed = false;
-
-        std::string transports = list_transports(tracker->long_output);
-        device_tracker_send(tracker, transports);
+        device_tracker_send(tracker, list_transports(tracker->long_output));
     }
 }
 
@@ -587,13 +702,11 @@
     update_transport_status();
 
     // Notify `adb track-devices` clients.
-    std::string transports = list_transports(false);
-
     device_tracker* tracker = device_tracker_list;
     while (tracker != nullptr) {
         device_tracker* next = tracker->next;
         // This may destroy the tracker if the connection is closed.
-        device_tracker_send(tracker, transports);
+        device_tracker_send(tracker, list_transports(tracker->long_output));
         tracker = next;
     }
 }
@@ -679,7 +792,6 @@
     if (t->GetConnectionState() != kCsNoPerm) {
         // The connection gets a reference to the atransport. It will release it
         // upon a read/write error.
-        t->ref_count++;
         t->connection()->SetTransportName(t->serial_name());
         t->connection()->SetReadCallback([t](Connection*, std::unique_ptr<apacket> p) {
             if (!check_header(p.get(), t)) {
@@ -698,7 +810,7 @@
             LOG(INFO) << t->serial_name() << ": connection terminated: " << error;
             fdevent_run_on_main_thread([t]() {
                 handle_offline(t);
-                transport_unref(t);
+                transport_destroy(t);
             });
         });
 
@@ -753,6 +865,26 @@
     }
 }
 
+void kick_all_tcp_tls_transports() {
+    std::lock_guard<std::recursive_mutex> lock(transport_lock);
+    for (auto t : transport_list) {
+        if (t->IsTcpDevice() && t->use_tls) {
+            t->Kick();
+        }
+    }
+}
+
+#if !ADB_HOST
+void kick_all_transports_by_auth_key(std::string_view auth_key) {
+    std::lock_guard<std::recursive_mutex> lock(transport_lock);
+    for (auto t : transport_list) {
+        if (auth_key == t->auth_key) {
+            t->Kick();
+        }
+    }
+}
+#endif
+
 /* the fdevent select pump is single threaded */
 void register_transport(atransport* transport) {
     tmsg m;
@@ -774,36 +906,27 @@
     }
 }
 
-static void transport_unref(atransport* t) {
+static void transport_destroy(atransport* t) {
     check_main_thread();
     CHECK(t != nullptr);
 
     std::lock_guard<std::recursive_mutex> lock(transport_lock);
-    CHECK_GT(t->ref_count, 0u);
-    t->ref_count--;
-    if (t->ref_count == 0) {
-        LOG(INFO) << "destroying transport " << t->serial_name();
-        t->connection()->Stop();
+    LOG(INFO) << "destroying transport " << t->serial_name();
+    t->connection()->Stop();
 #if ADB_HOST
-        if (t->IsTcpDevice() && !t->kicked()) {
-            D("transport: %s unref (attempting reconnection)", t->serial.c_str());
+    if (t->IsTcpDevice() && !t->kicked()) {
+        D("transport: %s destroy (attempting reconnection)", t->serial.c_str());
 
-            // We need to clear the transport's keys, so that on the next connection, it tries
-            // again from the beginning.
-            t->ResetKeys();
-            reconnect_handler.TrackTransport(t);
-        } else {
-            D("transport: %s unref (kicking and closing)", t->serial.c_str());
-            remove_transport(t);
-        }
-#else
-        D("transport: %s unref (kicking and closing)", t->serial.c_str());
-        remove_transport(t);
+        // We need to clear the transport's keys, so that on the next connection, it tries
+        // again from the beginning.
+        t->ResetKeys();
+        reconnect_handler.TrackTransport(t);
+        return;
+    }
 #endif
 
-    } else {
-        D("transport: %s unref (count=%zu)", t->serial.c_str(), t->ref_count);
-    }
+    D("transport: %s destroy (kicking and closing)", t->serial.c_str());
+    remove_transport(t);
 }
 
 static int qual_match(const std::string& to_test, const char* prefix, const std::string& qual,
@@ -1038,6 +1161,10 @@
     return protocol_version;
 }
 
+int atransport::get_tls_version() const {
+    return tls_version;
+}
+
 size_t atransport::get_max_payload() const {
     return max_payload;
 }
@@ -1048,11 +1175,15 @@
             kFeatureShell2,
             kFeatureCmd,
             kFeatureStat2,
+            kFeatureLs2,
             kFeatureFixedPushMkdir,
             kFeatureApex,
             kFeatureAbb,
             kFeatureFixedPushSymlinkTimestamp,
             kFeatureAbbExec,
+            kFeatureRemountShell,
+            kFeatureSendRecv2,
+            kFeatureSendRecv2Brotli,
             // Increment ADB_SERVER_VERSION when adding a feature that adbd needs
             // to know about. Otherwise, the client can be stuck running an old
             // version of the server even after upgrading their copy of adb.
@@ -1231,8 +1362,9 @@
 #endif  // ADB_HOST
 
 bool register_socket_transport(unique_fd s, std::string serial, int port, int local,
-                               atransport::ReconnectCallback reconnect, int* error) {
+                               atransport::ReconnectCallback reconnect, bool use_tls, int* error) {
     atransport* t = new atransport(std::move(reconnect), kCsOffline);
+    t->use_tls = use_tls;
 
     D("transport: %s init'ing for socket %d, on port %d", serial.c_str(), s.get(), port);
     if (init_socket_transport(t, std::move(s), port, local) < 0) {
@@ -1321,6 +1453,7 @@
 
 #endif
 
+#if ADB_HOST
 void register_usb_transport(usb_handle* usb, const char* serial, const char* devpath,
                             unsigned writeable) {
     atransport* t = new atransport(writeable ? kCsOffline : kCsNoPerm);
@@ -1342,6 +1475,7 @@
 
     register_transport(t);
 }
+#endif
 
 #if ADB_HOST
 // This should only be used for transports with connection_state == kCsNoPerm.
@@ -1370,6 +1504,15 @@
 }
 
 #if ADB_HOST
+std::shared_ptr<RSA> atransport::Key() {
+    if (keys_.empty()) {
+        return nullptr;
+    }
+
+    std::shared_ptr<RSA> result = keys_[0];
+    return result;
+}
+
 std::shared_ptr<RSA> atransport::NextKey() {
     if (keys_.empty()) {
         LOG(INFO) << "fetching keys for transport " << this->serial_name();
@@ -1377,10 +1520,11 @@
 
         // We should have gotten at least one key: the one that's automatically generated.
         CHECK(!keys_.empty());
+    } else {
+        keys_.pop_front();
     }
 
     std::shared_ptr<RSA> result = keys_[0];
-    keys_.pop_front();
     return result;
 }
 
diff --git a/adb/transport.h b/adb/transport.h
index 3473ca2..26d804b 100644
--- a/adb/transport.h
+++ b/adb/transport.h
@@ -27,6 +27,7 @@
 #include <list>
 #include <memory>
 #include <mutex>
+#include <optional>
 #include <string>
 #include <string_view>
 #include <thread>
@@ -38,10 +39,18 @@
 
 #include "adb.h"
 #include "adb_unique_fd.h"
-#include "usb.h"
+#include "types.h"
 
 typedef std::unordered_set<std::string> FeatureSet;
 
+namespace adb {
+namespace tls {
+
+class TlsConnection;
+
+}  // namespace tls
+}  // namespace adb
+
 const FeatureSet& supported_features();
 
 // Encodes and decodes FeatureSet objects into human-readable strings.
@@ -57,6 +66,7 @@
 // The 'cmd' command is available
 extern const char* const kFeatureCmd;
 extern const char* const kFeatureStat2;
+extern const char* const kFeatureLs2;
 // The server is running with libusb enabled.
 extern const char* const kFeatureLibusb;
 // adbd supports `push --sync`.
@@ -65,10 +75,18 @@
 extern const char* const kFeatureApex;
 // adbd has b/110953234 fixed.
 extern const char* const kFeatureFixedPushMkdir;
-// adbd supports android binder bridge (abb).
+// adbd supports android binder bridge (abb) in interactive mode using shell protocol.
 extern const char* const kFeatureAbb;
+// adbd supports abb using raw pipe.
+extern const char* const kFeatureAbbExec;
 // adbd properly updates symlink timestamps on push.
 extern const char* const kFeatureFixedPushSymlinkTimestamp;
+// Implement `adb remount` via shelling out to /system/bin/remount.
+extern const char* const kFeatureRemountShell;
+// adbd supports version 2 of send/recv.
+extern const char* const kFeatureSendRecv2;
+// adbd supports brotli for send/recv v2.
+extern const char* const kFeatureSendRecv2Brotli;
 
 TransportId NextTransportId();
 
@@ -99,6 +117,8 @@
     virtual void Start() = 0;
     virtual void Stop() = 0;
 
+    virtual bool DoTlsHandshake(RSA* key, std::string* auth_key = nullptr) = 0;
+
     // Stop, and reset the device if it's a USB connection.
     virtual void Reset();
 
@@ -123,6 +143,8 @@
     virtual bool Read(apacket* packet) = 0;
     virtual bool Write(apacket* packet) = 0;
 
+    virtual bool DoTlsHandshake(RSA* key, std::string* auth_key = nullptr) = 0;
+
     // Terminate a connection.
     // This method must be thread-safe, and must cause concurrent Reads/Writes to terminate.
     // Formerly known as 'Kick' in atransport.
@@ -141,9 +163,12 @@
 
     virtual void Start() override final;
     virtual void Stop() override final;
+    virtual bool DoTlsHandshake(RSA* key, std::string* auth_key) override final;
 
     virtual void Reset() override final;
 
+  private:
+    void StartReadThread() REQUIRES(mutex_);
     bool started_ GUARDED_BY(mutex_) = false;
     bool stopped_ GUARDED_BY(mutex_) = false;
 
@@ -159,29 +184,22 @@
 };
 
 struct FdConnection : public BlockingConnection {
-    explicit FdConnection(unique_fd fd) : fd_(std::move(fd)) {}
+    explicit FdConnection(unique_fd fd);
+    ~FdConnection();
 
     bool Read(apacket* packet) override final;
     bool Write(apacket* packet) override final;
+    bool DoTlsHandshake(RSA* key, std::string* auth_key) override final;
 
     void Close() override;
     virtual void Reset() override final { Close(); }
 
   private:
+    bool DispatchRead(void* buf, size_t len);
+    bool DispatchWrite(void* buf, size_t len);
+
     unique_fd fd_;
-};
-
-struct UsbConnection : public BlockingConnection {
-    explicit UsbConnection(usb_handle* handle) : handle_(handle) {}
-    ~UsbConnection();
-
-    bool Read(apacket* packet) override final;
-    bool Write(apacket* packet) override final;
-
-    void Close() override final;
-    virtual void Reset() override final;
-
-    usb_handle* handle_;
+    std::unique_ptr<adb::tls::TlsConnection> tls_;
 };
 
 // Waits for a transport's connection to be not pending. This is a separate
@@ -219,7 +237,11 @@
     Abort,
 };
 
-class atransport {
+#if ADB_HOST
+struct usb_handle;
+#endif
+
+class atransport : public enable_weak_from_this<atransport> {
   public:
     // TODO(danalbert): We expose waaaaaaay too much stuff because this was
     // historically just a struct, but making the whole thing a more idiomatic
@@ -242,7 +264,7 @@
     }
     atransport(ConnectionState state = kCsOffline)
         : atransport([](atransport*) { return ReconnectResult::Abort; }, state) {}
-    virtual ~atransport();
+    ~atransport();
 
     int Write(apacket* p);
     void Reset();
@@ -259,11 +281,13 @@
         return connection_;
     }
 
+#if ADB_HOST
     void SetUsbHandle(usb_handle* h) { usb_handle_ = h; }
     usb_handle* GetUsbHandle() { return usb_handle_; }
+#endif
 
     const TransportId id;
-    size_t ref_count = 0;
+
     bool online = false;
     TransportType type = kTransportAny;
 
@@ -274,12 +298,23 @@
     std::string device;
     std::string devpath;
 
+    // If this is set, the transport will initiate the connection with a
+    // START_TLS command, instead of AUTH.
+    bool use_tls = false;
+    int tls_version = A_STLS_VERSION;
+    int get_tls_version() const;
+
+#if !ADB_HOST
     // Used to provide the key to the framework.
     std::string auth_key;
+    std::optional<uint64_t> auth_id;
+#endif
 
     bool IsTcpDevice() const { return type == kTransportLocal; }
 
 #if ADB_HOST
+    // The current key being authorized.
+    std::shared_ptr<RSA> Key();
     std::shared_ptr<RSA> NextKey();
     void ResetKeys();
 #endif
@@ -356,8 +391,10 @@
     // The underlying connection object.
     std::shared_ptr<Connection> connection_ GUARDED_BY(mutex_);
 
+#if ADB_HOST
     // USB handle for the connection, if available.
     usb_handle* usb_handle_ = nullptr;
+#endif
 
     // A callback that will be invoked when the atransport needs to reconnect.
     ReconnectCallback reconnect_;
@@ -392,20 +429,29 @@
 atransport* find_transport(const char* serial);
 void kick_all_tcp_devices();
 void kick_all_transports();
+void kick_all_tcp_tls_transports();
+#if !ADB_HOST
+void kick_all_transports_by_auth_key(std::string_view auth_key);
+#endif
 
 void register_transport(atransport* transport);
-void register_usb_transport(usb_handle* h, const char* serial,
-                            const char* devpath, unsigned writeable);
+
+#if ADB_HOST
+void init_usb_transport(atransport* t, usb_handle* usb);
+void register_usb_transport(usb_handle* h, const char* serial, const char* devpath,
+                            unsigned writeable);
+
+// This should only be used for transports with connection_state == kCsNoPerm.
+void unregister_usb_transport(usb_handle* usb);
+#endif
 
 /* Connect to a network address and register it as a device */
 void connect_device(const std::string& address, std::string* response);
 
 /* cause new transports to be init'd and added to the list */
 bool register_socket_transport(unique_fd s, std::string serial, int port, int local,
-                               atransport::ReconnectCallback reconnect, int* error = nullptr);
-
-// This should only be used for transports with connection_state == kCsNoPerm.
-void unregister_usb_transport(usb_handle* usb);
+                               atransport::ReconnectCallback reconnect, bool use_tls,
+                               int* error = nullptr);
 
 bool check_header(apacket* p, atransport* t);
 
@@ -417,11 +463,12 @@
 asocket* create_device_tracker(bool long_output);
 
 #if !ADB_HOST
-unique_fd tcp_listen_inaddr_any(int port, std::string* error);
-void server_socket_thread(std::function<unique_fd(int, std::string*)> listen_func, int port);
+unique_fd adb_listen(std::string_view addr, std::string* error);
+void server_socket_thread(std::function<unique_fd(std::string_view, std::string*)> listen_func,
+                          std::string_view addr);
 
 #if defined(__ANDROID__)
-void qemu_socket_thread(int port);
+void qemu_socket_thread(std::string_view addr);
 bool use_qemu_goldfish();
 #endif
 
diff --git a/adb/transport_fd.cpp b/adb/transport_fd.cpp
index a93e68a..b9b4f42 100644
--- a/adb/transport_fd.cpp
+++ b/adb/transport_fd.cpp
@@ -93,8 +93,8 @@
 
                 if (pfds[0].revents & POLLIN) {
                     // TODO: Should we be getting blocks from a free list?
-                    auto block = std::make_unique<IOVector::block_type>(MAX_PAYLOAD);
-                    rc = adb_read(fd_.get(), &(*block)[0], block->size());
+                    auto block = IOVector::block_type(MAX_PAYLOAD);
+                    rc = adb_read(fd_.get(), &block[0], block.size());
                     if (rc == -1) {
                         *error = std::string("read failed: ") + strerror(errno);
                         return;
@@ -102,7 +102,7 @@
                         *error = "read failed: EOF";
                         return;
                     }
-                    block->resize(rc);
+                    block.resize(rc);
                     read_buffer_.append(std::move(block));
 
                     if (!read_header_ && read_buffer_.size() >= sizeof(amessage)) {
@@ -116,7 +116,7 @@
                         auto data_chain = read_buffer_.take_front(read_header_->data_length);
 
                         // TODO: Make apacket carry around a IOVector instead of coalescing.
-                        auto payload = data_chain.coalesce<apacket::payload_type>();
+                        auto payload = std::move(data_chain).coalesce();
                         auto packet = std::make_unique<apacket>();
                         packet->msg = *read_header_;
                         packet->payload = std::move(payload);
@@ -155,6 +155,11 @@
         thread_.join();
     }
 
+    bool DoTlsHandshake(RSA* key, std::string* auth_key) override final {
+        LOG(FATAL) << "Not supported yet";
+        return false;
+    }
+
     void WakeThread() {
         uint64_t buf = 0;
         if (TEMP_FAILURE_RETRY(adb_write(wake_fd_write_.get(), &buf, sizeof(buf))) != sizeof(buf)) {
@@ -184,8 +189,7 @@
             return WriteResult::Error;
         }
 
-        // TODO: Implement a more efficient drop_front?
-        write_buffer_.take_front(rc);
+        write_buffer_.drop_front(rc);
         writable_ = write_buffer_.empty();
         if (write_buffer_.empty()) {
             return WriteResult::Completed;
@@ -199,10 +203,10 @@
         std::lock_guard<std::mutex> lock(write_mutex_);
         const char* header_begin = reinterpret_cast<const char*>(&packet->msg);
         const char* header_end = header_begin + sizeof(packet->msg);
-        auto header_block = std::make_unique<IOVector::block_type>(header_begin, header_end);
+        auto header_block = IOVector::block_type(header_begin, header_end);
         write_buffer_.append(std::move(header_block));
         if (!packet->payload.empty()) {
-            write_buffer_.append(std::make_unique<IOVector::block_type>(std::move(packet->payload)));
+            write_buffer_.append(std::move(packet->payload));
         }
 
         WriteResult result = DispatchWrites();
diff --git a/adb/transport_local.cpp b/adb/transport_local.cpp
index b9f738d..5ec8e16 100644
--- a/adb/transport_local.cpp
+++ b/adb/transport_local.cpp
@@ -85,22 +85,6 @@
     return local_connect_arbitrary_ports(port - 1, port, &dummy) == 0;
 }
 
-std::tuple<unique_fd, int, std::string> tcp_connect(const std::string& address,
-                                                    std::string* response) {
-    unique_fd fd;
-    int port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
-    std::string serial;
-    std::string prefix_addr = address.starts_with("vsock:") ? address : "tcp:" + address;
-    if (socket_spec_connect(&fd, prefix_addr, &port, &serial, response)) {
-        close_on_exec(fd);
-        if (!set_tcp_keepalive(fd, 1)) {
-            D("warning: failed to configure TCP keepalives (%s)", strerror(errno));
-        }
-        return std::make_tuple(std::move(fd), port, serial);
-    }
-    return std::make_tuple(unique_fd(), 0, serial);
-}
-
 void connect_device(const std::string& address, std::string* response) {
     if (address.empty()) {
         *response = "empty address";
@@ -110,17 +94,25 @@
     D("connection requested to '%s'", address.c_str());
     unique_fd fd;
     int port;
-    std::string serial;
-    std::tie(fd, port, serial) = tcp_connect(address, response);
+    std::string serial, prefix_addr;
+
+    // If address does not match any socket type, it should default to TCP.
+    if (address.starts_with("vsock:") || address.starts_with("localfilesystem:")) {
+        prefix_addr = address;
+    } else {
+        prefix_addr = "tcp:" + address;
+    }
+
+    socket_spec_connect(&fd, prefix_addr, &port, &serial, response);
     if (fd.get() == -1) {
         return;
     }
-    auto reconnect = [address](atransport* t) {
+    auto reconnect = [prefix_addr](atransport* t) {
         std::string response;
         unique_fd fd;
         int port;
         std::string serial;
-        std::tie(fd, port, serial) = tcp_connect(address, &response);
+        socket_spec_connect(&fd, prefix_addr, &port, &serial, &response);
         if (fd == -1) {
             D("reconnect failed: %s", response.c_str());
             return ReconnectResult::Retry;
@@ -134,7 +126,8 @@
     };
 
     int error;
-    if (!register_socket_transport(std::move(fd), serial, port, 0, std::move(reconnect), &error)) {
+    if (!register_socket_transport(std::move(fd), serial, port, 0, std::move(reconnect), false,
+                                   &error)) {
         if (error == EALREADY) {
             *response = android::base::StringPrintf("already connected to %s", serial.c_str());
         } else if (error == EPERM) {
@@ -171,8 +164,9 @@
         close_on_exec(fd.get());
         disable_tcp_nagle(fd.get());
         std::string serial = getEmulatorSerialString(console_port);
-        if (register_socket_transport(std::move(fd), std::move(serial), adb_port, 1,
-                                      [](atransport*) { return ReconnectResult::Abort; })) {
+        if (register_socket_transport(
+                    std::move(fd), std::move(serial), adb_port, 1,
+                    [](atransport*) { return ReconnectResult::Abort; }, false)) {
             return 0;
         }
     }
@@ -203,7 +197,7 @@
 std::mutex &retry_ports_lock = *new std::mutex;
 std::condition_variable &retry_ports_cond = *new std::condition_variable;
 
-static void client_socket_thread(int) {
+static void client_socket_thread(std::string_view) {
     adb_thread_setname("client_socket_thread");
     D("transport: client_socket_thread() starting");
     PollAllLocalPortsForEmulator();
@@ -248,7 +242,8 @@
 
 #else  // !ADB_HOST
 
-void server_socket_thread(std::function<unique_fd(int, std::string*)> listen_func, int port) {
+void server_socket_thread(std::function<unique_fd(std::string_view, std::string*)> listen_func,
+                          std::string_view addr) {
     adb_thread_setname("server socket");
 
     unique_fd serverfd;
@@ -256,7 +251,7 @@
 
     while (serverfd == -1) {
         errno = 0;
-        serverfd = listen_func(port, &error);
+        serverfd = listen_func(addr, &error);
         if (errno == EAFNOSUPPORT || errno == EINVAL || errno == EPROTONOSUPPORT) {
             D("unrecoverable error: '%s'", error.c_str());
             return;
@@ -276,8 +271,11 @@
             close_on_exec(fd.get());
             disable_tcp_nagle(fd.get());
             std::string serial = android::base::StringPrintf("host-%d", fd.get());
-            register_socket_transport(std::move(fd), std::move(serial), port, 1,
-                                      [](atransport*) { return ReconnectResult::Abort; });
+            // We don't care about port value in "register_socket_transport" as it is used
+            // only from ADB_HOST. "server_socket_thread" is never called from ADB_HOST.
+            register_socket_transport(
+                    std::move(fd), std::move(serial), 0, 1,
+                    [](atransport*) { return ReconnectResult::Abort; }, false);
         }
     }
     D("transport: server_socket_thread() exiting");
@@ -285,38 +283,30 @@
 
 #endif
 
-unique_fd tcp_listen_inaddr_any(int port, std::string* error) {
-    return unique_fd{network_inaddr_any_server(port, SOCK_STREAM, error)};
-}
-
 #if !ADB_HOST
-static unique_fd vsock_listen(int port, std::string* error) {
-    return unique_fd{
-        socket_spec_listen(android::base::StringPrintf("vsock:%d", port), error, nullptr)
-    };
+unique_fd adb_listen(std::string_view addr, std::string* error) {
+    return unique_fd{socket_spec_listen(addr, error, nullptr)};
 }
 #endif
 
-void local_init(int port) {
+void local_init(const std::string& addr) {
 #if ADB_HOST
     D("transport: local client init");
-    std::thread(client_socket_thread, port).detach();
+    std::thread(client_socket_thread, addr).detach();
     adb_local_transport_max_port_env_override();
 #elif !defined(__ANDROID__)
     // Host adbd.
     D("transport: local server init");
-    std::thread(server_socket_thread, tcp_listen_inaddr_any, port).detach();
-    std::thread(server_socket_thread, vsock_listen, port).detach();
+    std::thread(server_socket_thread, adb_listen, addr).detach();
 #else
     D("transport: local server init");
     // For the adbd daemon in the system image we need to distinguish
     // between the device, and the emulator.
-    if (use_qemu_goldfish()) {
-        std::thread(qemu_socket_thread, port).detach();
+    if (addr.starts_with("tcp:") && use_qemu_goldfish()) {
+        std::thread(qemu_socket_thread, addr).detach();
     } else {
-        std::thread(server_socket_thread, tcp_listen_inaddr_any, port).detach();
+        std::thread(server_socket_thread, adb_listen, addr).detach();
     }
-    std::thread(server_socket_thread, vsock_listen, port).detach();
 #endif // !ADB_HOST
 }
 
@@ -378,7 +368,7 @@
     if (local) {
         auto emulator_connection = std::make_unique<EmulatorConnection>(std::move(fd), adb_port);
         t->SetConnection(
-            std::make_unique<BlockingConnectionAdapter>(std::move(emulator_connection)));
+                std::make_unique<BlockingConnectionAdapter>(std::move(emulator_connection)));
         std::lock_guard<std::mutex> lock(local_transports_lock);
         atransport* existing_transport = find_emulator_transport_by_adb_port_locked(adb_port);
         if (existing_transport != nullptr) {
diff --git a/adb/transport_test.cpp b/adb/transport_test.cpp
index b66f8fa..00beb3a 100644
--- a/adb/transport_test.cpp
+++ b/adb/transport_test.cpp
@@ -19,7 +19,7 @@
 #include <gtest/gtest.h>
 
 #include "adb.h"
-#include "fdevent_test.h"
+#include "fdevent/fdevent_test.h"
 
 struct TransportTest : public FdeventTest {};
 
diff --git a/adb/transport_usb.cpp b/adb/transport_usb.cpp
deleted file mode 100644
index 3e87522..0000000
--- a/adb/transport_usb.cpp
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define TRACE_TAG TRANSPORT
-
-#include <memory>
-
-#include "sysdeps.h"
-#include "transport.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "adb.h"
-
-#if ADB_HOST
-
-#if defined(__APPLE__)
-#define CHECK_PACKET_OVERFLOW 0
-#else
-#define CHECK_PACKET_OVERFLOW 1
-#endif
-
-// Call usb_read using a buffer having a multiple of usb_get_max_packet_size() bytes
-// to avoid overflow. See http://libusb.sourceforge.net/api-1.0/packetoverflow.html.
-static int UsbReadMessage(usb_handle* h, amessage* msg) {
-    D("UsbReadMessage");
-
-#if CHECK_PACKET_OVERFLOW
-    size_t usb_packet_size = usb_get_max_packet_size(h);
-    CHECK_GE(usb_packet_size, sizeof(*msg));
-    CHECK_LT(usb_packet_size, 4096ULL);
-
-    char buffer[4096];
-    int n = usb_read(h, buffer, usb_packet_size);
-    if (n != sizeof(*msg)) {
-        D("usb_read returned unexpected length %d (expected %zu)", n, sizeof(*msg));
-        return -1;
-    }
-    memcpy(msg, buffer, sizeof(*msg));
-    return n;
-#else
-    return usb_read(h, msg, sizeof(*msg));
-#endif
-}
-
-// Call usb_read using a buffer having a multiple of usb_get_max_packet_size() bytes
-// to avoid overflow. See http://libusb.sourceforge.net/api-1.0/packetoverflow.html.
-static int UsbReadPayload(usb_handle* h, apacket* p) {
-    D("UsbReadPayload(%d)", p->msg.data_length);
-
-    if (p->msg.data_length > MAX_PAYLOAD) {
-        return -1;
-    }
-
-#if CHECK_PACKET_OVERFLOW
-    size_t usb_packet_size = usb_get_max_packet_size(h);
-
-    // Round the data length up to the nearest packet size boundary.
-    // The device won't send a zero packet for packet size aligned payloads,
-    // so don't read any more packets than needed.
-    size_t len = p->msg.data_length;
-    size_t rem_size = len % usb_packet_size;
-    if (rem_size) {
-        len += usb_packet_size - rem_size;
-    }
-
-    p->payload.resize(len);
-    int rc = usb_read(h, &p->payload[0], p->payload.size());
-    if (rc != static_cast<int>(p->msg.data_length)) {
-        return -1;
-    }
-
-    p->payload.resize(rc);
-    return rc;
-#else
-    p->payload.resize(p->msg.data_length);
-    return usb_read(h, &p->payload[0], p->payload.size());
-#endif
-}
-
-static int remote_read(apacket* p, usb_handle* usb) {
-    int n = UsbReadMessage(usb, &p->msg);
-    if (n < 0) {
-        D("remote usb: read terminated (message)");
-        return -1;
-    }
-    if (static_cast<size_t>(n) != sizeof(p->msg)) {
-        D("remote usb: read received unexpected header length %d", n);
-        return -1;
-    }
-    if (p->msg.data_length) {
-        n = UsbReadPayload(usb, p);
-        if (n < 0) {
-            D("remote usb: terminated (data)");
-            return -1;
-        }
-        if (static_cast<uint32_t>(n) != p->msg.data_length) {
-            D("remote usb: read payload failed (need %u bytes, give %d bytes), skip it",
-              p->msg.data_length, n);
-            return -1;
-        }
-    }
-    return 0;
-}
-
-#else
-
-// On Android devices, we rely on the kernel to provide buffered read.
-// So we can recover automatically from EOVERFLOW.
-static int remote_read(apacket* p, usb_handle* usb) {
-    if (usb_read(usb, &p->msg, sizeof(amessage)) != sizeof(amessage)) {
-        PLOG(ERROR) << "remote usb: read terminated (message)";
-        return -1;
-    }
-
-    if (p->msg.data_length) {
-        if (p->msg.data_length > MAX_PAYLOAD) {
-            PLOG(ERROR) << "remote usb: read overflow (data length = " << p->msg.data_length << ")";
-            return -1;
-        }
-
-        p->payload.resize(p->msg.data_length);
-        if (usb_read(usb, &p->payload[0], p->payload.size())
-                != static_cast<int>(p->payload.size())) {
-            PLOG(ERROR) << "remote usb: terminated (data)";
-            return -1;
-        }
-    }
-
-    return 0;
-}
-#endif
-
-UsbConnection::~UsbConnection() {
-    usb_close(handle_);
-}
-
-bool UsbConnection::Read(apacket* packet) {
-    int rc = remote_read(packet, handle_);
-    return rc == 0;
-}
-
-bool UsbConnection::Write(apacket* packet) {
-    int size = packet->msg.data_length;
-
-    if (usb_write(handle_, &packet->msg, sizeof(packet->msg)) != sizeof(packet->msg)) {
-        PLOG(ERROR) << "remote usb: 1 - write terminated";
-        return false;
-    }
-
-    if (packet->msg.data_length != 0 && usb_write(handle_, packet->payload.data(), size) != size) {
-        PLOG(ERROR) << "remote usb: 2 - write terminated";
-        return false;
-    }
-
-    return true;
-}
-
-void UsbConnection::Reset() {
-    usb_reset(handle_);
-    usb_kick(handle_);
-}
-
-void UsbConnection::Close() {
-    usb_kick(handle_);
-}
-
-void init_usb_transport(atransport* t, usb_handle* h) {
-    D("transport: usb");
-    auto connection = std::make_unique<UsbConnection>(h);
-    t->SetConnection(std::make_unique<BlockingConnectionAdapter>(std::move(connection)));
-    t->type = kTransportUsb;
-    t->SetUsbHandle(h);
-}
-
-int is_adb_interface(int usb_class, int usb_subclass, int usb_protocol) {
-    return (usb_class == ADB_CLASS && usb_subclass == ADB_SUBCLASS && usb_protocol == ADB_PROTOCOL);
-}
-
-bool should_use_libusb() {
-#if !ADB_HOST
-    return false;
-#else
-    static bool enable = getenv("ADB_LIBUSB") && strcmp(getenv("ADB_LIBUSB"), "1") == 0;
-    return enable;
-#endif
-}
diff --git a/adb/types.cpp b/adb/types.cpp
new file mode 100644
index 0000000..26b77ab
--- /dev/null
+++ b/adb/types.cpp
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "types.h"
+
+IOVector& IOVector::operator=(IOVector&& move) noexcept {
+    chain_ = std::move(move.chain_);
+    chain_length_ = move.chain_length_;
+    begin_offset_ = move.begin_offset_;
+    start_index_ = move.start_index_;
+
+    move.clear();
+    return *this;
+}
+
+IOVector::block_type IOVector::clear() {
+    chain_length_ = 0;
+    begin_offset_ = 0;
+    start_index_ = 0;
+    block_type res;
+    if (!chain_.empty()) {
+        res = std::move(chain_.back());
+    }
+    chain_.clear();
+    return res;
+}
+
+void IOVector::drop_front(IOVector::size_type len) {
+    if (len == 0) {
+        return;
+    }
+    if (len == size()) {
+        clear();
+        return;
+    }
+    CHECK_LT(len, size());
+
+    auto dropped = 0u;
+    while (dropped < len) {
+        const auto next = chain_[start_index_].size() - begin_offset_;
+        if (dropped + next < len) {
+            pop_front_block();
+            dropped += next;
+        } else {
+            const auto taken = len - dropped;
+            begin_offset_ += taken;
+            break;
+        }
+    }
+}
+
+IOVector IOVector::take_front(IOVector::size_type len) {
+    if (len == 0) {
+        return {};
+    }
+    if (len == size()) {
+        return std::move(*this);
+    }
+
+    CHECK_GE(size(), len);
+    IOVector res;
+    // first iterate over the blocks that completely go into the other vector
+    while (chain_[start_index_].size() - begin_offset_ <= len) {
+        chain_length_ -= chain_[start_index_].size();
+        len -= chain_[start_index_].size() - begin_offset_;
+        if (chain_[start_index_].size() > begin_offset_) {
+            res.append(std::move(chain_[start_index_]));
+            if (begin_offset_) {
+                res.begin_offset_ = std::exchange(begin_offset_, 0);
+            }
+        } else {
+            begin_offset_ = 0;
+        }
+        ++start_index_;
+    }
+
+    if (len > 0) {
+        // what's left is a single buffer that needs to be split between the |res| and |this|
+        // we know that it has to be split - there was a check for the case when it has to
+        // go away as a whole.
+        if (begin_offset_ != 0 || len < chain_[start_index_].size() / 2) {
+            // let's memcpy the data out
+            block_type block(chain_[start_index_].begin() + begin_offset_,
+                             chain_[start_index_].begin() + begin_offset_ + len);
+            res.append(std::move(block));
+            begin_offset_ += len;
+        } else {
+            CHECK_EQ(begin_offset_, 0u);
+            // move out the internal buffer out and copy only the tail of it back in
+            block_type block(chain_[start_index_].begin() + len, chain_[start_index_].end());
+            chain_length_ -= chain_[start_index_].size();
+            chain_[start_index_].resize(len);
+            res.append(std::move(chain_[start_index_]));
+            chain_length_ += block.size();
+            chain_[start_index_] = std::move(block);
+        }
+    }
+    return res;
+}
+
+void IOVector::trim_front() {
+    if ((begin_offset_ == 0 && start_index_ == 0) || chain_.empty()) {
+        return;
+    }
+    block_type& first_block = chain_[start_index_];
+    if (begin_offset_ == first_block.size()) {
+        ++start_index_;
+    } else {
+        memmove(first_block.data(), first_block.data() + begin_offset_,
+                first_block.size() - begin_offset_);
+        first_block.resize(first_block.size() - begin_offset_);
+    }
+    chain_length_ -= begin_offset_;
+    begin_offset_ = 0;
+    trim_chain_front();
+}
+
+void IOVector::trim_chain_front() {
+    if (start_index_) {
+        chain_.erase(chain_.begin(), chain_.begin() + start_index_);
+        start_index_ = 0;
+    }
+}
+
+void IOVector::pop_front_block() {
+    chain_length_ -= chain_[start_index_].size();
+    begin_offset_ = 0;
+    chain_[start_index_].clear();
+    ++start_index_;
+    if (start_index_ > std::max<size_t>(4, chain_.size() / 2)) {
+        trim_chain_front();
+    }
+}
+
+IOVector::block_type IOVector::coalesce() && {
+    // Destructive coalesce() may optimize for several cases when it doesn't need to allocate
+    // new buffer, or even return one of the existing blocks as is. The only guarantee is that
+    // after this call the IOVector is in some valid state. Nothing is guaranteed about the
+    // specifics.
+    if (size() == 0) {
+        return {};
+    }
+    if (begin_offset_ == chain_[start_index_].size() && chain_.size() == start_index_ + 2) {
+        chain_length_ -= chain_.back().size();
+        auto res = std::move(chain_.back());
+        chain_.pop_back();
+        return res;
+    }
+    if (chain_.size() == start_index_ + 1) {
+        chain_length_ -= chain_.back().size();
+        auto res = std::move(chain_.back());
+        chain_.pop_back();
+        if (begin_offset_ != 0) {
+            memmove(res.data(), res.data() + begin_offset_, res.size() - begin_offset_);
+            res.resize(res.size() - begin_offset_);
+            begin_offset_ = 0;
+        }
+        return res;
+    }
+    if (auto& firstBuffer = chain_[start_index_]; firstBuffer.capacity() >= size()) {
+        auto res = std::move(chain_[start_index_]);
+        auto size = res.size();
+        chain_length_ -= size;
+        if (begin_offset_ != 0) {
+            memmove(res.data(), res.data() + begin_offset_, res.size() - begin_offset_);
+            size -= begin_offset_;
+            begin_offset_ = 0;
+        }
+        for (auto i = start_index_ + 1; i < chain_.size(); ++i) {
+            memcpy(res.data() + size, chain_[i].data(), chain_[i].size());
+            size += chain_[i].size();
+        }
+        res.resize(size);
+        ++start_index_;
+        return res;
+    }
+    return const_cast<const IOVector*>(this)->coalesce<>();
+}
+
+std::vector<adb_iovec> IOVector::iovecs() const {
+    std::vector<adb_iovec> result;
+    result.reserve(chain_.size() - start_index_);
+    iterate_blocks([&result](const char* data, size_t len) {
+        adb_iovec iov;
+        iov.iov_base = const_cast<char*>(data);
+        iov.iov_len = len;
+        result.emplace_back(iov);
+    });
+
+    return result;
+}
diff --git a/adb/types.h b/adb/types.h
index cd1366d..deca7ea 100644
--- a/adb/types.h
+++ b/adb/types.h
@@ -16,22 +16,23 @@
 
 #pragma once
 
+#include <string.h>
+
 #include <algorithm>
-#include <deque>
 #include <memory>
-#include <type_traits>
 #include <utility>
 #include <vector>
 
 #include <android-base/logging.h>
 
+#include "fdevent/fdevent.h"
 #include "sysdeps/uio.h"
 
 // Essentially std::vector<char>, except without zero initialization or reallocation.
 struct Block {
     using iterator = char*;
 
-    Block() {}
+    Block() = default;
 
     explicit Block(size_t size) { allocate(size); }
 
@@ -41,24 +42,21 @@
     }
 
     Block(const Block& copy) = delete;
-    Block(Block&& move) noexcept {
-        std::swap(data_, move.data_);
-        std::swap(capacity_, move.capacity_);
-        std::swap(size_, move.size_);
-    }
+    Block(Block&& move) noexcept
+        : data_(std::exchange(move.data_, nullptr)),
+          capacity_(std::exchange(move.capacity_, 0)),
+          size_(std::exchange(move.size_, 0)) {}
 
     Block& operator=(const Block& copy) = delete;
     Block& operator=(Block&& move) noexcept {
         clear();
-
-        std::swap(data_, move.data_);
-        std::swap(capacity_, move.capacity_);
-        std::swap(size_, move.size_);
-
+        data_ = std::exchange(move.data_, nullptr);
+        capacity_ = std::exchange(move.capacity_, 0);
+        size_ = std::exchange(move.size_, 0);
         return *this;
     }
 
-    ~Block() { clear(); }
+    ~Block() = default;
 
     void resize(size_t new_size) {
         if (!data_) {
@@ -142,146 +140,79 @@
     using block_type = Block;
     using size_type = size_t;
 
-    IOVector() {}
+    IOVector() = default;
 
-    explicit IOVector(std::unique_ptr<block_type> block) {
-        append(std::move(block));
-    }
+    explicit IOVector(block_type&& block) { append(std::move(block)); }
 
     IOVector(const IOVector& copy) = delete;
     IOVector(IOVector&& move) noexcept : IOVector() { *this = std::move(move); }
 
     IOVector& operator=(const IOVector& copy) = delete;
-    IOVector& operator=(IOVector&& move) noexcept {
-        chain_ = std::move(move.chain_);
-        chain_length_ = move.chain_length_;
-        begin_offset_ = move.begin_offset_;
-        end_offset_ = move.end_offset_;
+    IOVector& operator=(IOVector&& move) noexcept;
 
-        move.chain_.clear();
-        move.chain_length_ = 0;
-        move.begin_offset_ = 0;
-        move.end_offset_ = 0;
+    const value_type* front_data() const {
+        if (chain_.empty()) {
+            return nullptr;
+        }
 
-        return *this;
+        return chain_.front().data() + begin_offset_;
     }
 
-    size_type size() const { return chain_length_ - begin_offset_ - end_offset_; }
+    size_type front_size() const {
+        if (chain_.empty()) {
+            return 0;
+        }
+
+        return chain_.front().size() - begin_offset_;
+    }
+
+    size_type size() const { return chain_length_ - begin_offset_; }
     bool empty() const { return size() == 0; }
 
-    void clear() {
-        chain_length_ = 0;
-        begin_offset_ = 0;
-        end_offset_ = 0;
-        chain_.clear();
-    }
+    // Return the last block so the caller can still reuse its allocated capacity
+    // or it can be simply ignored.
+    block_type clear();
+
+    void drop_front(size_type len);
 
     // Split the first |len| bytes out of this chain into its own.
-    IOVector take_front(size_type len) {
-        IOVector head;
-
-        if (len == 0) {
-            return head;
-        }
-        CHECK_GE(size(), len);
-
-        std::shared_ptr<const block_type> first_block = chain_.front();
-        CHECK_GE(first_block->size(), begin_offset_);
-        head.append_shared(std::move(first_block));
-        head.begin_offset_ = begin_offset_;
-
-        while (head.size() < len) {
-            pop_front_block();
-            CHECK(!chain_.empty());
-
-            head.append_shared(chain_.front());
-        }
-
-        if (head.size() == len) {
-            // Head takes full ownership of the last block it took.
-            head.end_offset_ = 0;
-            begin_offset_ = 0;
-            pop_front_block();
-        } else {
-            // Head takes partial ownership of the last block it took.
-            size_t bytes_taken = head.size() - len;
-            head.end_offset_ = bytes_taken;
-            CHECK_GE(chain_.front()->size(), bytes_taken);
-            begin_offset_ = chain_.front()->size() - bytes_taken;
-        }
-
-        return head;
-    }
+    IOVector take_front(size_type len);
 
     // Add a nonempty block to the chain.
-    // The end of the chain must be a complete block (i.e. end_offset_ == 0).
-    void append(std::unique_ptr<const block_type> block) {
-        if (block->size() == 0) {
+    void append(block_type&& block) {
+        if (block.size() == 0) {
             return;
         }
-
-        CHECK_EQ(0ULL, end_offset_);
-        chain_length_ += block->size();
+        CHECK_NE(0ULL, block.size());
+        chain_length_ += block.size();
         chain_.emplace_back(std::move(block));
     }
 
-    void append(block_type&& block) { append(std::make_unique<block_type>(std::move(block))); }
-
-    void trim_front() {
-        if (begin_offset_ == 0) {
-            return;
-        }
-
-        const block_type* first_block = chain_.front().get();
-        auto copy = std::make_unique<block_type>(first_block->size() - begin_offset_);
-        memcpy(copy->data(), first_block->data() + begin_offset_, copy->size());
-        chain_.front() = std::move(copy);
-
-        chain_length_ -= begin_offset_;
-        begin_offset_ = 0;
-    }
+    void trim_front();
 
   private:
-    // append, except takes a shared_ptr.
-    // Private to prevent exterior mutation of blocks.
-    void append_shared(std::shared_ptr<const block_type> block) {
-        CHECK_NE(0ULL, block->size());
-        CHECK_EQ(0ULL, end_offset_);
-        chain_length_ += block->size();
-        chain_.emplace_back(std::move(block));
-    }
+    void trim_chain_front();
 
     // Drop the front block from the chain, and update chain_length_ appropriately.
-    void pop_front_block() {
-        chain_length_ -= chain_.front()->size();
-        begin_offset_ = 0;
-        chain_.pop_front();
-    }
+    void pop_front_block();
 
     // Iterate over the blocks with a callback with an operator()(const char*, size_t).
     template <typename Fn>
     void iterate_blocks(Fn&& callback) const {
-        if (chain_.size() == 0) {
+        if (size() == 0) {
             return;
         }
 
-        for (size_t i = 0; i < chain_.size(); ++i) {
-            const std::shared_ptr<const block_type>& block = chain_.at(i);
-            const char* begin = block->data();
-            size_t length = block->size();
+        for (size_t i = start_index_; i < chain_.size(); ++i) {
+            const auto& block = chain_[i];
+            const char* begin = block.data();
+            size_t length = block.size();
 
-            // Note that both of these conditions can be true if there's only one block.
-            if (i == 0) {
-                CHECK_GE(block->size(), begin_offset_);
+            if (i == start_index_) {
+                CHECK_GE(block.size(), begin_offset_);
                 begin += begin_offset_;
                 length -= begin_offset_;
             }
-
-            if (i == chain_.size() - 1) {
-                CHECK_GE(length, end_offset_);
-                length -= end_offset_;
-            }
-
             callback(begin, length);
         }
     }
@@ -289,7 +220,7 @@
   public:
     // Copy all of the blocks into a single block.
     template <typename CollectionType = block_type>
-    CollectionType coalesce() const {
+    CollectionType coalesce() const& {
         CollectionType result;
         if (size() == 0) {
             return result;
@@ -306,12 +237,13 @@
         return result;
     }
 
+    block_type coalesce() &&;
+
     template <typename FunctionType>
-    auto coalesced(FunctionType&& f) const ->
-        typename std::result_of<FunctionType(const char*, size_t)>::type {
-        if (chain_.size() == 1) {
+    auto coalesced(FunctionType&& f) const {
+        if (chain_.size() == start_index_ + 1) {
             // If we only have one block, we can use it directly.
-            return f(chain_.front()->data() + begin_offset_, size());
+            return f(chain_[start_index_].data() + begin_offset_, size());
         } else {
             // Otherwise, copy to a single block.
             auto data = coalesce();
@@ -320,23 +252,107 @@
     }
 
     // Get a list of iovecs that can be used to write out all of the blocks.
-    std::vector<adb_iovec> iovecs() const {
-        std::vector<adb_iovec> result;
-        iterate_blocks([&result](const char* data, size_t len) {
-            adb_iovec iov;
-            iov.iov_base = const_cast<char*>(data);
-            iov.iov_len = len;
-            result.emplace_back(iov);
-        });
-
-        return result;
-    }
+    std::vector<adb_iovec> iovecs() const;
 
   private:
     // Total length of all of the blocks in the chain.
     size_t chain_length_ = 0;
 
     size_t begin_offset_ = 0;
-    size_t end_offset_ = 0;
-    std::deque<std::shared_ptr<const block_type>> chain_;
+    size_t start_index_ = 0;
+    std::vector<block_type> chain_;
+};
+
+// An implementation of weak pointers tied to the fdevent run loop.
+//
+// This allows for code to submit a request for an object, and upon receiving
+// a response, know whether the object is still alive, or has been destroyed
+// because of other reasons. We keep a list of living weak_ptrs in each object,
+// and clear the weak_ptrs when the object is destroyed. This is safe, because
+// we require that both the destructor of the referent and the get method on
+// the weak_ptr are executed on the main thread.
+template <typename T>
+struct enable_weak_from_this;
+
+template <typename T>
+struct weak_ptr {
+    weak_ptr() = default;
+    explicit weak_ptr(T* ptr) { reset(ptr); }
+    weak_ptr(const weak_ptr& copy) { reset(copy.get()); }
+
+    weak_ptr(weak_ptr&& move) {
+        reset(move.get());
+        move.reset();
+    }
+
+    ~weak_ptr() { reset(); }
+
+    weak_ptr& operator=(const weak_ptr& copy) {
+        if (&copy == this) {
+            return *this;
+        }
+
+        reset(copy.get());
+        return *this;
+    }
+
+    weak_ptr& operator=(weak_ptr&& move) {
+        if (&move == this) {
+            return *this;
+        }
+
+        reset(move.get());
+        move.reset();
+        return *this;
+    }
+
+    T* get() {
+        check_main_thread();
+        return ptr_;
+    }
+
+    void reset(T* ptr = nullptr) {
+        check_main_thread();
+
+        if (ptr == ptr_) {
+            return;
+        }
+
+        if (ptr_) {
+            ptr_->weak_ptrs_.erase(
+                    std::remove(ptr_->weak_ptrs_.begin(), ptr_->weak_ptrs_.end(), this));
+        }
+
+        ptr_ = ptr;
+        if (ptr_) {
+            ptr_->weak_ptrs_.push_back(this);
+        }
+    }
+
+  private:
+    friend struct enable_weak_from_this<T>;
+    T* ptr_ = nullptr;
+};
+
+template <typename T>
+struct enable_weak_from_this {
+    ~enable_weak_from_this() {
+        if (!weak_ptrs_.empty()) {
+            check_main_thread();
+            for (auto& weak : weak_ptrs_) {
+                weak->ptr_ = nullptr;
+            }
+            weak_ptrs_.clear();
+        }
+    }
+
+    weak_ptr<T> weak() { return weak_ptr<T>(static_cast<T*>(this)); }
+
+    void schedule_deletion() {
+        fdevent_run_on_main_thread([this]() { delete this; });
+    }
+
+  private:
+    friend struct weak_ptr<T>;
+    std::vector<weak_ptr<T>*> weak_ptrs_;
 };
diff --git a/adb/types_test.cpp b/adb/types_test.cpp
index 1fbd2ca..2c99f95 100644
--- a/adb/types_test.cpp
+++ b/adb/types_test.cpp
@@ -19,21 +19,21 @@
 #include <memory>
 #include "types.h"
 
-static std::unique_ptr<IOVector::block_type> create_block(const std::string& string) {
-    return std::make_unique<IOVector::block_type>(string.begin(), string.end());
+static IOVector::block_type create_block(const std::string& string) {
+    return IOVector::block_type(string.begin(), string.end());
 }
 
-static std::unique_ptr<IOVector::block_type> create_block(char value, size_t len) {
-    auto block = std::make_unique<IOVector::block_type>();
-    block->resize(len);
-    memset(&(*block)[0], value, len);
+static IOVector::block_type create_block(char value, size_t len) {
+    auto block = IOVector::block_type();
+    block.resize(len);
+    memset(&(block)[0], value, len);
     return block;
 }
 
 template <typename T>
-static std::unique_ptr<IOVector::block_type> copy_block(T&& block) {
-    auto copy = std::make_unique<IOVector::block_type>();
-    copy->assign(block->begin(), block->end());
+static IOVector::block_type copy_block(const T& block) {
+    auto copy = IOVector::block_type();
+    copy.assign(block.begin(), block.end());
     return copy;
 }
 
@@ -50,7 +50,7 @@
     bc.append(copy_block(block));
     ASSERT_EQ(100ULL, bc.size());
     auto coalesced = bc.coalesce();
-    ASSERT_EQ(*block, coalesced);
+    ASSERT_EQ(block, coalesced);
 }
 
 TEST(IOVector, single_block_split) {
@@ -60,8 +60,8 @@
     IOVector foo = bc.take_front(3);
     ASSERT_EQ(3ULL, foo.size());
     ASSERT_EQ(3ULL, bc.size());
-    ASSERT_EQ(*create_block("foo"), foo.coalesce());
-    ASSERT_EQ(*create_block("bar"), bc.coalesce());
+    ASSERT_EQ(create_block("foo"), foo.coalesce());
+    ASSERT_EQ(create_block("bar"), bc.coalesce());
 }
 
 TEST(IOVector, aligned_split) {
@@ -73,15 +73,15 @@
 
     IOVector foo = bc.take_front(3);
     ASSERT_EQ(3ULL, foo.size());
-    ASSERT_EQ(*create_block("foo"), foo.coalesce());
+    ASSERT_EQ(create_block("foo"), foo.coalesce());
 
     IOVector bar = bc.take_front(3);
     ASSERT_EQ(3ULL, bar.size());
-    ASSERT_EQ(*create_block("bar"), bar.coalesce());
+    ASSERT_EQ(create_block("bar"), bar.coalesce());
 
     IOVector baz = bc.take_front(3);
     ASSERT_EQ(3ULL, baz.size());
-    ASSERT_EQ(*create_block("baz"), baz.coalesce());
+    ASSERT_EQ(create_block("baz"), baz.coalesce());
 
     ASSERT_EQ(0ULL, bc.size());
 }
@@ -97,23 +97,23 @@
     // Aligned left, misaligned right, across multiple blocks.
     IOVector foob = bc.take_front(4);
     ASSERT_EQ(4ULL, foob.size());
-    ASSERT_EQ(*create_block("foob"), foob.coalesce());
+    ASSERT_EQ(create_block("foob"), foob.coalesce());
 
     // Misaligned left, misaligned right, in one block.
     IOVector a = bc.take_front(1);
     ASSERT_EQ(1ULL, a.size());
-    ASSERT_EQ(*create_block("a"), a.coalesce());
+    ASSERT_EQ(create_block("a"), a.coalesce());
 
     // Misaligned left, misaligned right, across two blocks.
     IOVector rba = bc.take_front(3);
     ASSERT_EQ(3ULL, rba.size());
-    ASSERT_EQ(*create_block("rba"), rba.coalesce());
+    ASSERT_EQ(create_block("rba"), rba.coalesce());
 
     // Misaligned left, misaligned right, across three blocks.
     IOVector zquxquu = bc.take_front(7);
     ASSERT_EQ(7ULL, zquxquu.size());
-    ASSERT_EQ(*create_block("zquxquu"), zquxquu.coalesce());
+    ASSERT_EQ(create_block("zquxquu"), zquxquu.coalesce());
 
     ASSERT_EQ(1ULL, bc.size());
-    ASSERT_EQ(*create_block("x"), bc.coalesce());
+    ASSERT_EQ(create_block("x"), bc.coalesce());
 }
diff --git a/adb/usb.h b/adb/usb.h
deleted file mode 100644
index eb8ca6c..0000000
--- a/adb/usb.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-
-// USB host/client interface.
-
-#define ADB_USB_INTERFACE(handle_ref_type)                       \
-    void usb_init();                                             \
-    void usb_cleanup();                                          \
-    int usb_write(handle_ref_type h, const void* data, int len); \
-    int usb_read(handle_ref_type h, void* data, int len);        \
-    int usb_close(handle_ref_type h);                            \
-    void usb_reset(handle_ref_type h);                           \
-    void usb_kick(handle_ref_type h);                            \
-    size_t usb_get_max_packet_size(handle_ref_type)
-
-#if !ADB_HOST
-// The daemon has a single implementation.
-
-struct usb_handle;
-ADB_USB_INTERFACE(usb_handle*);
-
-#else // linux host || darwin
-// Linux and Darwin clients have native and libusb implementations.
-
-namespace libusb {
-    struct usb_handle;
-    ADB_USB_INTERFACE(libusb::usb_handle*);
-}
-
-namespace native {
-    struct usb_handle;
-    ADB_USB_INTERFACE(native::usb_handle*);
-}
-
-// Empty base that both implementations' opaque handles inherit from.
-struct usb_handle {
-};
-
-ADB_USB_INTERFACE(::usb_handle*);
-
-#endif // linux host || darwin
-
-
-// USB device detection.
-int is_adb_interface(int usb_class, int usb_subclass, int usb_protocol);
-
-bool should_use_libusb();
diff --git a/base/Android.bp b/base/Android.bp
index 38f301a..4556f9b 100644
--- a/base/Android.bp
+++ b/base/Android.bp
@@ -20,15 +20,23 @@
         "-Wall",
         "-Werror",
         "-Wextra",
-        "-D_FILE_OFFSET_BITS=64",
     ],
+    target: {
+        android: {
+            cflags: [
+                "-D_FILE_OFFSET_BITS=64",
+            ],
+        },
+    },
 }
 
 cc_library_headers {
     name: "libbase_headers",
     vendor_available: true,
+    ramdisk_available: true,
     recovery_available: true,
     host_supported: true,
+    native_bridge_supported: true,
     export_include_dirs: ["include"],
 
     target: {
@@ -39,20 +47,28 @@
             enabled: true,
         },
     },
+    apex_available: [
+        "//apex_available:anyapex",
+        "//apex_available:platform",
+    ],
+    min_sdk_version: "29",
 }
 
 cc_defaults {
     name: "libbase_defaults",
     defaults: ["libbase_cflags_defaults"],
     srcs: [
+        "abi_compatibility.cpp",
         "chrono_utils.cpp",
         "cmsg.cpp",
         "file.cpp",
+        "liblog_symbols.cpp",
         "logging.cpp",
         "mapped_file.cpp",
+        "parsebool.cpp",
         "parsenetaddress.cpp",
+        "process.cpp",
         "properties.cpp",
-        "quick_exit.cpp",
         "stringprintf.cpp",
         "strings.cpp",
         "threads.cpp",
@@ -98,8 +114,10 @@
     name: "libbase",
     defaults: ["libbase_defaults"],
     vendor_available: true,
+    ramdisk_available: true,
     recovery_available: true,
     host_supported: true,
+    native_bridge_supported: true,
     vndk: {
         enabled: true,
         support_system_process: true,
@@ -108,6 +126,14 @@
         "libbase_headers",
     ],
     export_header_lib_headers: ["libbase_headers"],
+    static_libs: ["fmtlib"],
+    whole_static_libs: ["fmtlib"],
+    export_static_lib_headers: ["fmtlib"],
+    apex_available: [
+        "//apex_available:anyapex",
+        "//apex_available:platform",
+    ],
+    min_sdk_version: "29",
 }
 
 cc_library_static {
@@ -116,6 +142,9 @@
     sdk_version: "current",
     stl: "c++_static",
     export_include_dirs: ["include"],
+    static_libs: ["fmtlib_ndk"],
+    whole_static_libs: ["fmtlib_ndk"],
+    export_static_lib_headers: ["fmtlib_ndk"],
 }
 
 // Tests
@@ -128,15 +157,20 @@
         "cmsg_test.cpp",
         "endian_test.cpp",
         "errors_test.cpp",
+        "expected_test.cpp",
         "file_test.cpp",
+        "logging_splitters_test.cpp",
         "logging_test.cpp",
         "macros_test.cpp",
         "mapped_file_test.cpp",
+        "no_destructor_test.cpp",
         "parsedouble_test.cpp",
+        "parsebool_test.cpp",
         "parseint_test.cpp",
         "parsenetaddress_test.cpp",
+        "process_test.cpp",
         "properties_test.cpp",
-        "quick_exit_test.cpp",
+        "result_test.cpp",
         "scopeguard_test.cpp",
         "stringprintf_test.cpp",
         "strings_test.cpp",
@@ -171,3 +205,21 @@
     },
     test_suites: ["device-tests"],
 }
+
+cc_benchmark {
+    name: "libbase_benchmark",
+    defaults: ["libbase_cflags_defaults"],
+
+    srcs: ["format_benchmark.cpp"],
+    shared_libs: ["libbase"],
+
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
+}
diff --git a/base/README.md b/base/README.md
new file mode 100644
index 0000000..2ef5c10
--- /dev/null
+++ b/base/README.md
@@ -0,0 +1,42 @@
+# libbase
+
+## Who is this library for?
+
+This library is a collection of convenience functions to make common tasks
+easier and less error-prone.
+
+In this context, "error-prone" covers both "hard to do correctly" and
+"hard to do with good performance", but as a general purpose library,
+libbase's primary focus is on making it easier to do things easily and
+correctly when a compromise has to be made between "simplest API" on the
+one hand and "fastest implementation" on the other. Though obviously
+the ideal is to have both.
+
+## Should my routine be added?
+
+The intention is to cover the 80% use cases, not be all things to all users.
+
+If you have a routine that's really useful in your project,
+congratulations. But that doesn't mean it should be here rather than
+just in your project.
+
+The question for libbase is "should everyone be doing this?"/"does this
+make everyone's code cleaner/safer?". Historically we've considered the
+bar for inclusion to be "are there at least three *unrelated* projects
+that would be cleaned up by doing so".
+
+If your routine is actually something from a future C++ standard (that
+isn't yet in libc++), or it's widely used in another library, that helps
+show that there's precedent. Being able to say "so-and-so has used this
+API for n years" is a good way to reduce concerns about API choices.
+
+## Any other restrictions?
+
+Unlike most Android code, code in libbase has to build for Mac and
+Windows too.
+
+Code here is also expected to have good test coverage.
+
+By its nature, it's difficult to change libbase API. It's often best
+to start using your routine just in your project, and let it "graduate"
+after you're certain that the API is solid.
diff --git a/base/abi_compatibility.cpp b/base/abi_compatibility.cpp
new file mode 100644
index 0000000..06a7801
--- /dev/null
+++ b/base/abi_compatibility.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <memory>
+
+#include "android-base/cmsg.h"
+#include "android-base/file.h"
+#include "android-base/mapped_file.h"
+#include "android-base/unique_fd.h"
+
+namespace android {
+namespace base {
+
+// These ABI-compatibility shims are in a separate file for two reasons:
+//   1. If they were in the file with the actual functions, it prevents calls to
+//      those functions by other functions in the file, due to ambiguity.
+//   2. We will hopefully be able to delete these quickly.
+
+#if !defined(_WIN32)
+ssize_t SendFileDescriptorVector(int sockfd, const void* data, size_t len,
+                                 const std::vector<int>& fds) {
+  return SendFileDescriptorVector(borrowed_fd(sockfd), data, len, fds);
+}
+
+ssize_t ReceiveFileDescriptorVector(int sockfd, void* data, size_t len, size_t max_fds,
+                                    std::vector<unique_fd>* fds) {
+  return ReceiveFileDescriptorVector(borrowed_fd(sockfd), data, len, max_fds, fds);
+}
+#endif
+
+bool ReadFdToString(int fd, std::string* content) {
+  return ReadFdToString(borrowed_fd(fd), content);
+}
+
+bool WriteStringToFd(const std::string& content, int fd) {
+  return WriteStringToFd(content, borrowed_fd(fd));
+}
+
+bool ReadFully(int fd, void* data, size_t byte_count) {
+  return ReadFully(borrowed_fd(fd), data, byte_count);
+}
+
+bool ReadFullyAtOffset(int fd, void* data, size_t byte_count, off64_t offset) {
+  return ReadFullyAtOffset(borrowed_fd(fd), data, byte_count, offset);
+}
+
+bool WriteFully(int fd, const void* data, size_t byte_count) {
+  return WriteFully(borrowed_fd(fd), data, byte_count);
+}
+
+#if defined(__LP64__)
+#define MAPPEDFILE_FROMFD _ZN10MappedFile6FromFdEilmi
+#else
+#define MAPPEDFILE_FROMFD _ZN10MappedFile6FromFdEixmi
+#endif
+
+#pragma clang diagnostic ignored "-Wreturn-type-c-linkage"
+extern "C" std::unique_ptr<MappedFile> MAPPEDFILE_FROMFD(int fd, off64_t offset, size_t length,
+                                                         int prot) {
+  return MappedFile::FromFd(fd, offset, length, prot);
+}
+
+}  // namespace base
+}  // namespace android
diff --git a/base/cmsg.cpp b/base/cmsg.cpp
index 42866f8..1fa873c 100644
--- a/base/cmsg.cpp
+++ b/base/cmsg.cpp
@@ -29,7 +29,7 @@
 namespace android {
 namespace base {
 
-ssize_t SendFileDescriptorVector(int sockfd, const void* data, size_t len,
+ssize_t SendFileDescriptorVector(borrowed_fd sockfd, const void* data, size_t len,
                                  const std::vector<int>& fds) {
   size_t cmsg_space = CMSG_SPACE(sizeof(int) * fds.size());
   size_t cmsg_len = CMSG_LEN(sizeof(int) * fds.size());
@@ -67,10 +67,10 @@
   int flags = 0;
 #endif
 
-  return TEMP_FAILURE_RETRY(sendmsg(sockfd, &msg, flags));
+  return TEMP_FAILURE_RETRY(sendmsg(sockfd.get(), &msg, flags));
 }
 
-ssize_t ReceiveFileDescriptorVector(int sockfd, void* data, size_t len, size_t max_fds,
+ssize_t ReceiveFileDescriptorVector(borrowed_fd sockfd, void* data, size_t len, size_t max_fds,
                                     std::vector<unique_fd>* fds) {
   fds->clear();
 
@@ -98,7 +98,7 @@
   flags |= MSG_CMSG_CLOEXEC | MSG_NOSIGNAL;
 #endif
 
-  ssize_t rc = TEMP_FAILURE_RETRY(recvmsg(sockfd, &msg, flags));
+  ssize_t rc = TEMP_FAILURE_RETRY(recvmsg(sockfd.get(), &msg, flags));
 
   if (rc == -1) {
     return -1;
diff --git a/base/errors_unix.cpp b/base/errors_unix.cpp
index 296995e..48269b6 100644
--- a/base/errors_unix.cpp
+++ b/base/errors_unix.cpp
@@ -17,6 +17,7 @@
 #include "android-base/errors.h"
 
 #include <errno.h>
+#include <string.h>
 
 namespace android {
 namespace base {
diff --git a/base/expected_test.cpp b/base/expected_test.cpp
new file mode 100644
index 0000000..47e396a
--- /dev/null
+++ b/base/expected_test.cpp
@@ -0,0 +1,876 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/expected.h"
+
+#include <cstdio>
+#include <memory>
+#include <string>
+
+#include <gtest/gtest.h>
+
+using android::base::expected;
+using android::base::unexpected;
+
+typedef expected<int, int> exp_int;
+typedef expected<double, double> exp_double;
+typedef expected<std::string, std::string> exp_string;
+typedef expected<std::pair<std::string, int>, int> exp_pair;
+typedef expected<void, int> exp_void;
+
+struct T {
+  int a;
+  int b;
+  T() = default;
+  T(int a, int b) noexcept : a(a), b(b) {}
+};
+bool operator==(const T& x, const T& y) {
+  return x.a == y.a && x.b == y.b;
+}
+bool operator!=(const T& x, const T& y) {
+  return x.a != y.a || x.b != y.b;
+}
+
+struct E {
+    std::string message;
+    int cause;
+    E(const std::string& message, int cause) : message(message), cause(cause) {}
+};
+
+typedef expected<T,E> exp_complex;
+
+TEST(Expected, testDefaultConstructible) {
+  exp_int e;
+  EXPECT_TRUE(e.has_value());
+  EXPECT_EQ(0, e.value());
+
+  exp_complex e2;
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(T(0,0), e2.value());
+
+  exp_void e3;
+  EXPECT_TRUE(e3.has_value());
+}
+
+TEST(Expected, testCopyConstructible) {
+  exp_int e;
+  exp_int e2 = e;
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(0, e.value());
+  EXPECT_EQ(0, e2.value());
+
+  exp_void e3;
+  exp_void e4 = e3;
+  EXPECT_TRUE(e3.has_value());
+  EXPECT_TRUE(e4.has_value());
+}
+
+TEST(Expected, testMoveConstructible) {
+  exp_int e;
+  exp_int e2 = std::move(e);
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(0, e.value());
+  EXPECT_EQ(0, e2.value());
+
+  exp_string e3(std::string("hello"));
+  exp_string e4 = std::move(e3);
+
+  EXPECT_TRUE(e3.has_value());
+  EXPECT_TRUE(e4.has_value());
+  EXPECT_EQ("", e3.value()); // e3 is moved
+  EXPECT_EQ("hello", e4.value());
+
+  exp_void e5;
+  exp_void e6 = std::move(e5);
+  EXPECT_TRUE(e5.has_value());
+  EXPECT_TRUE(e6.has_value());
+}
+
+TEST(Expected, testCopyConstructibleFromConvertibleType) {
+  exp_double e = 3.3f;
+  exp_int e2 = e;
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(3.3f, e.value());
+  EXPECT_EQ(3, e2.value());
+}
+
+TEST(Expected, testMoveConstructibleFromConvertibleType) {
+  exp_double e = 3.3f;
+  exp_int e2 = std::move(e);
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(3.3f, e.value());
+  EXPECT_EQ(3, e2.value());
+}
+
+TEST(Expected, testConstructibleFromValue) {
+  exp_int e = 3;
+  exp_double e2 = 5.5f;
+  exp_string e3 = std::string("hello");
+  exp_complex e4 = T(10, 20);
+  exp_void e5 = {};
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_TRUE(e3.has_value());
+  EXPECT_TRUE(e4.has_value());
+  EXPECT_TRUE(e5.has_value());
+  EXPECT_EQ(3, e.value());
+  EXPECT_EQ(5.5f, e2.value());
+  EXPECT_EQ("hello", e3.value());
+  EXPECT_EQ(T(10,20), e4.value());
+}
+
+TEST(Expected, testConstructibleFromMovedValue) {
+  std::string hello = "hello";
+  exp_string e = std::move(hello);
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_EQ("hello", e.value());
+  EXPECT_EQ("", hello);
+}
+
+TEST(Expected, testConstructibleFromConvertibleValue) {
+  exp_int e = 3.3f; // double to int
+  exp_string e2 = "hello"; // char* to std::string
+  EXPECT_TRUE(e.has_value());
+  EXPECT_EQ(3, e.value());
+
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ("hello", e2.value());
+}
+
+TEST(Expected, testConstructibleFromUnexpected) {
+  exp_int::unexpected_type unexp = unexpected(10);
+  exp_int e = unexp;
+
+  exp_double::unexpected_type unexp2 = unexpected(10.5f);
+  exp_double e2 = unexp2;
+
+  exp_string::unexpected_type unexp3 = unexpected(std::string("error"));
+  exp_string e3 = unexp3;
+
+  exp_void::unexpected_type unexp4 = unexpected(10);
+  exp_void e4 = unexp4;
+
+  EXPECT_FALSE(e.has_value());
+  EXPECT_FALSE(e2.has_value());
+  EXPECT_FALSE(e3.has_value());
+  EXPECT_FALSE(e4.has_value());
+  EXPECT_EQ(10, e.error());
+  EXPECT_EQ(10.5f, e2.error());
+  EXPECT_EQ("error", e3.error());
+  EXPECT_EQ(10, e4.error());
+}
+
+TEST(Expected, testMoveConstructibleFromUnexpected) {
+  exp_int e = unexpected(10);
+  exp_double e2 = unexpected(10.5f);
+  exp_string e3 = unexpected(std::string("error"));
+  exp_void e4 = unexpected(10);
+
+  EXPECT_FALSE(e.has_value());
+  EXPECT_FALSE(e2.has_value());
+  EXPECT_FALSE(e3.has_value());
+  EXPECT_FALSE(e4.has_value());
+  EXPECT_EQ(10, e.error());
+  EXPECT_EQ(10.5f, e2.error());
+  EXPECT_EQ("error", e3.error());
+  EXPECT_EQ(10, e4.error());
+}
+
+TEST(Expected, testConstructibleByForwarding) {
+  exp_string e(std::in_place, 5, 'a');
+  EXPECT_TRUE(e.has_value());
+  EXPECT_EQ("aaaaa", e.value());
+
+  exp_string e2({'a', 'b', 'c'});
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ("abc", e2.value());
+
+  exp_pair e3({"hello", 30});
+  EXPECT_TRUE(e3.has_value());
+  EXPECT_EQ("hello",e3->first);
+  EXPECT_EQ(30,e3->second);
+
+  exp_void e4({});
+  EXPECT_TRUE(e4.has_value());
+}
+
+TEST(Expected, testDestructible) {
+  bool destroyed = false;
+  struct T {
+    bool* flag_;
+    T(bool* flag) : flag_(flag) {}
+    ~T() { *flag_ = true; }
+  };
+  {
+    expected<T, int> exp = T(&destroyed);
+  }
+  EXPECT_TRUE(destroyed);
+}
+
+TEST(Expected, testAssignable) {
+  exp_int e = 10;
+  exp_int e2 = 20;
+  e = e2;
+
+  EXPECT_EQ(20, e.value());
+  EXPECT_EQ(20, e2.value());
+
+  exp_int e3 = 10;
+  exp_int e4 = 20;
+  e3 = std::move(e4);
+
+  EXPECT_EQ(20, e3.value());
+  EXPECT_EQ(20, e4.value());
+
+  exp_void e5 = unexpected(10);
+  ASSERT_FALSE(e5.has_value());
+  exp_void e6;
+  e5 = e6;
+
+  EXPECT_TRUE(e5.has_value());
+  EXPECT_TRUE(e6.has_value());
+}
+
+TEST(Expected, testAssignableFromValue) {
+  exp_int e = 10;
+  e = 20;
+  EXPECT_EQ(20, e.value());
+
+  exp_double e2 = 3.5f;
+  e2 = 10.5f;
+  EXPECT_EQ(10.5f, e2.value());
+
+  exp_string e3 = "hello";
+  e3 = "world";
+  EXPECT_EQ("world", e3.value());
+
+  exp_void e4 = unexpected(10);
+  ASSERT_FALSE(e4.has_value());
+  e4 = {};
+  EXPECT_TRUE(e4.has_value());
+}
+
+TEST(Expected, testAssignableFromUnexpected) {
+  exp_int e = 10;
+  e = unexpected(30);
+  EXPECT_FALSE(e.has_value());
+  EXPECT_EQ(30, e.error());
+
+  exp_double e2 = 3.5f;
+  e2 = unexpected(10.5f);
+  EXPECT_FALSE(e2.has_value());
+  EXPECT_EQ(10.5f, e2.error());
+
+  exp_string e3 = "hello";
+  e3 = unexpected("world");
+  EXPECT_FALSE(e3.has_value());
+  EXPECT_EQ("world", e3.error());
+
+  exp_void e4 = {};
+  e4 = unexpected(10);
+  EXPECT_FALSE(e4.has_value());
+  EXPECT_EQ(10, e4.error());
+}
+
+TEST(Expected, testAssignableFromMovedValue) {
+  std::string world = "world";
+  exp_string e = "hello";
+  e = std::move(world);
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_EQ("world", e.value());
+  EXPECT_EQ("", world);
+}
+
+TEST(Expected, testAssignableFromMovedUnexpected) {
+  std::string world = "world";
+  exp_string e = "hello";
+  e = unexpected(std::move(world));
+
+  EXPECT_FALSE(e.has_value());
+  EXPECT_EQ("world", e.error());
+  EXPECT_EQ("", world);
+}
+
+TEST(Expected, testEmplace) {
+  struct T {
+    int a;
+    double b;
+    T() {}
+    T(int a, double b) noexcept : a(a), b(b) {}
+  };
+  expected<T, int> exp;
+  T& t = exp.emplace(3, 10.5f);
+
+  EXPECT_TRUE(exp.has_value());
+  EXPECT_EQ(3, t.a);
+  EXPECT_EQ(10.5f, t.b);
+  EXPECT_EQ(3, exp.value().a);
+  EXPECT_EQ(10.5, exp.value().b);
+
+  exp_void e = unexpected(10);
+  ASSERT_FALSE(e.has_value());
+  e.emplace();
+  EXPECT_TRUE(e.has_value());
+}
+
+TEST(Expected, testSwapExpectedExpected) {
+  exp_int e = 10;
+  exp_int e2 = 20;
+  e.swap(e2);
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(20, e.value());
+  EXPECT_EQ(10, e2.value());
+
+  exp_void e3;
+  exp_void e4;
+  e3.swap(e4);
+
+  EXPECT_TRUE(e3.has_value());
+  EXPECT_TRUE(e4.has_value());
+}
+
+TEST(Expected, testSwapUnexpectedUnexpected) {
+  exp_int e = unexpected(10);
+  exp_int e2 = unexpected(20);
+  e.swap(e2);
+  EXPECT_FALSE(e.has_value());
+  EXPECT_FALSE(e2.has_value());
+  EXPECT_EQ(20, e.error());
+  EXPECT_EQ(10, e2.error());
+
+  exp_void e3 = unexpected(10);
+  exp_void e4 = unexpected(20);
+  e3.swap(e4);
+  EXPECT_FALSE(e3.has_value());
+  EXPECT_FALSE(e4.has_value());
+  EXPECT_EQ(20, e3.error());
+  EXPECT_EQ(10, e4.error());
+}
+
+TEST(Expected, testSwapExpectedUnepected) {
+  exp_int e = 10;
+  exp_int e2 = unexpected(30);
+  e.swap(e2);
+  EXPECT_FALSE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(30, e.error());
+  EXPECT_EQ(10, e2.value());
+
+  exp_void e3;
+  exp_void e4 = unexpected(10);
+  e3.swap(e4);
+  EXPECT_FALSE(e3.has_value());
+  EXPECT_TRUE(e4.has_value());
+  EXPECT_EQ(10, e3.error());
+}
+
+TEST(Expected, testDereference) {
+  struct T {
+    int a;
+    double b;
+    T() {}
+    T(int a, double b) : a(a), b(b) {}
+  };
+  expected<T, int> exp = T(3, 10.5f);
+
+  EXPECT_EQ(3, exp->a);
+  EXPECT_EQ(10.5f, exp->b);
+
+  EXPECT_EQ(3, (*exp).a);
+  EXPECT_EQ(10.5f, (*exp).b);
+}
+
+TEST(Expected, testTest) {
+  exp_int e = 10;
+  EXPECT_TRUE(e.ok());
+  EXPECT_TRUE(e.has_value());
+
+  exp_int e2 = unexpected(10);
+  EXPECT_FALSE(e2.ok());
+  EXPECT_FALSE(e2.has_value());
+}
+
+TEST(Expected, testGetValue) {
+  exp_int e = 10;
+  EXPECT_EQ(10, e.value());
+  EXPECT_EQ(10, e.value_or(20));
+
+  exp_int e2 = unexpected(10);
+  EXPECT_EQ(10, e2.error());
+  EXPECT_EQ(20, e2.value_or(20));
+}
+
+TEST(Expected, testSameValues) {
+  exp_int e = 10;
+  exp_int e2 = 10;
+  EXPECT_TRUE(e == e2);
+  EXPECT_TRUE(e2 == e);
+  EXPECT_FALSE(e != e2);
+  EXPECT_FALSE(e2 != e);
+
+  exp_void e3;
+  exp_void e4;
+  EXPECT_TRUE(e3 == e4);
+  EXPECT_TRUE(e4 == e3);
+  EXPECT_FALSE(e3 != e4);
+  EXPECT_FALSE(e4 != e3);
+}
+
+TEST(Expected, testDifferentValues) {
+  exp_int e = 10;
+  exp_int e2 = 20;
+  EXPECT_FALSE(e == e2);
+  EXPECT_FALSE(e2 == e);
+  EXPECT_TRUE(e != e2);
+  EXPECT_TRUE(e2 != e);
+}
+
+TEST(Expected, testValueWithError) {
+  exp_int e = 10;
+  exp_int e2 = unexpected(10);
+  EXPECT_FALSE(e == e2);
+  EXPECT_FALSE(e2 == e);
+  EXPECT_TRUE(e != e2);
+  EXPECT_TRUE(e2 != e);
+
+  exp_void e3;
+  exp_void e4 = unexpected(10);
+  EXPECT_FALSE(e3 == e4);
+  EXPECT_FALSE(e4 == e3);
+  EXPECT_TRUE(e3 != e4);
+  EXPECT_TRUE(e4 != e3);
+}
+
+TEST(Expected, testSameErrors) {
+  exp_int e = unexpected(10);
+  exp_int e2 = unexpected(10);
+  EXPECT_TRUE(e == e2);
+  EXPECT_TRUE(e2 == e);
+  EXPECT_FALSE(e != e2);
+  EXPECT_FALSE(e2 != e);
+
+  exp_void e3 = unexpected(10);
+  exp_void e4 = unexpected(10);
+  EXPECT_TRUE(e3 == e4);
+  EXPECT_TRUE(e4 == e3);
+  EXPECT_FALSE(e3 != e4);
+  EXPECT_FALSE(e4 != e3);
+}
+
+TEST(Expected, testDifferentErrors) {
+  exp_int e = unexpected(10);
+  exp_int e2 = unexpected(20);
+  EXPECT_FALSE(e == e2);
+  EXPECT_FALSE(e2 == e);
+  EXPECT_TRUE(e != e2);
+  EXPECT_TRUE(e2 != e);
+
+  exp_void e3 = unexpected(10);
+  exp_void e4 = unexpected(20);
+  EXPECT_FALSE(e3 == e4);
+  EXPECT_FALSE(e4 == e3);
+  EXPECT_TRUE(e3 != e4);
+  EXPECT_TRUE(e4 != e3);
+}
+
+TEST(Expected, testCompareWithSameError) {
+  exp_int e = unexpected(10);
+  exp_int::unexpected_type error = 10;
+  EXPECT_TRUE(e == error);
+  EXPECT_TRUE(error == e);
+  EXPECT_FALSE(e != error);
+  EXPECT_FALSE(error != e);
+
+  exp_void e2 = unexpected(10);
+  exp_void::unexpected_type error2 = 10;
+  EXPECT_TRUE(e2 == error2);
+  EXPECT_TRUE(error2 == e2);
+  EXPECT_FALSE(e2 != error2);
+  EXPECT_FALSE(error2 != e2);
+}
+
+TEST(Expected, testCompareWithDifferentError) {
+  exp_int e = unexpected(10);
+  exp_int::unexpected_type error = 20;
+  EXPECT_FALSE(e == error);
+  EXPECT_FALSE(error == e);
+  EXPECT_TRUE(e != error);
+  EXPECT_TRUE(error != e);
+
+  exp_void e2 = unexpected(10);
+  exp_void::unexpected_type error2 = 20;
+  EXPECT_FALSE(e2 == error2);
+  EXPECT_FALSE(error2 == e2);
+  EXPECT_TRUE(e2 != error2);
+  EXPECT_TRUE(error2 != e2);
+}
+
+TEST(Expected, testCompareDifferentType) {
+  expected<int,int> e = 10;
+  expected<int32_t, int> e2 = 10;
+  EXPECT_TRUE(e == e2);
+  e2 = 20;
+  EXPECT_FALSE(e == e2);
+
+  expected<std::string_view,int> e3 = "hello";
+  expected<std::string,int> e4 = "hello";
+  EXPECT_TRUE(e3 == e4);
+  e4 = "world";
+  EXPECT_FALSE(e3 == e4);
+
+  expected<void,int> e5;
+  expected<int,int> e6 = 10;
+  EXPECT_FALSE(e5 == e6);
+  EXPECT_FALSE(e6 == e5);
+}
+
+TEST(Expected, testDivideExample) {
+  struct QR {
+    int quotient;
+    int remainder;
+    QR(int q, int r) noexcept : quotient(q), remainder(r) {}
+    bool operator==(const QR& rhs) const {
+      return quotient == rhs.quotient && remainder == rhs.remainder;
+    }
+    bool operator!=(const QR& rhs) const {
+      return quotient != rhs.quotient || remainder == rhs.remainder;
+    }
+  };
+
+  auto divide = [](int x, int y) -> expected<QR,E> {
+    if (y == 0) {
+      return unexpected(E("divide by zero", -1));
+    } else {
+      return QR(x / y, x % y);
+    }
+  };
+
+  EXPECT_FALSE(divide(10, 0).ok());
+  EXPECT_EQ("divide by zero", divide(10, 0).error().message);
+  EXPECT_EQ(-1, divide(10, 0).error().cause);
+
+  EXPECT_TRUE(divide(10, 3).ok());
+  EXPECT_EQ(QR(3, 1), *divide(10, 3));
+}
+
+TEST(Expected, testPair) {
+  auto test = [](bool yes) -> exp_pair {
+    if (yes) {
+      return exp_pair({"yes", 42});
+    } else {
+      return unexpected(42);
+    }
+  };
+
+  auto r = test(true);
+  EXPECT_TRUE(r.ok());
+  EXPECT_EQ("yes", r->first);
+}
+
+TEST(Expected, testVoid) {
+  auto test = [](bool ok) -> exp_void {
+    if (ok) {
+      return {};
+    } else {
+      return unexpected(10);
+    }
+  };
+
+  auto r = test(true);
+  EXPECT_TRUE(r.ok());
+  r = test(false);
+  EXPECT_FALSE(r.ok());
+  EXPECT_EQ(10, r.error());
+}
+
+// copied from result_test.cpp
+struct ConstructorTracker {
+  static size_t constructor_called;
+  static size_t copy_constructor_called;
+  static size_t move_constructor_called;
+  static size_t copy_assignment_called;
+  static size_t move_assignment_called;
+
+  template <typename T,
+    typename std::enable_if_t<std::is_convertible_v<T, std::string>>* = nullptr>
+  ConstructorTracker(T&& string) : string(string) {
+    ++constructor_called;
+  }
+  ConstructorTracker(const ConstructorTracker& ct) {
+    ++copy_constructor_called;
+    string = ct.string;
+  }
+  ConstructorTracker(ConstructorTracker&& ct) noexcept {
+    ++move_constructor_called;
+    string = std::move(ct.string);
+  }
+  ConstructorTracker& operator=(const ConstructorTracker& ct) {
+    ++copy_assignment_called;
+    string = ct.string;
+    return *this;
+  }
+  ConstructorTracker& operator=(ConstructorTracker&& ct) noexcept {
+    ++move_assignment_called;
+    string = std::move(ct.string);
+    return *this;
+  }
+  static void Reset() {
+    constructor_called = 0;
+    copy_constructor_called = 0;
+    move_constructor_called = 0;
+    copy_assignment_called = 0;
+    move_assignment_called = 0;
+  }
+  std::string string;
+};
+
+size_t ConstructorTracker::constructor_called = 0;
+size_t ConstructorTracker::copy_constructor_called = 0;
+size_t ConstructorTracker::move_constructor_called = 0;
+size_t ConstructorTracker::copy_assignment_called = 0;
+size_t ConstructorTracker::move_assignment_called = 0;
+
+typedef expected<ConstructorTracker, int> exp_track;
+
+TEST(Expected, testNumberOfCopies) {
+  // default constructor
+  ConstructorTracker::Reset();
+  exp_track e("hello");
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  // copy constructor
+  ConstructorTracker::Reset();
+  exp_track e2 = e;
+  EXPECT_EQ(0U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  // move constructor
+  ConstructorTracker::Reset();
+  exp_track e3 = std::move(e);
+  EXPECT_EQ(0U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  // construct from lvalue
+  ConstructorTracker::Reset();
+  ConstructorTracker ct = "hello";
+  exp_track e4(ct);
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  // construct from rvalue
+  ConstructorTracker::Reset();
+  ConstructorTracker ct2 = "hello";
+  exp_track e5(std::move(ct2));
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  // copy assignment
+  ConstructorTracker::Reset();
+  exp_track e6 = "hello";
+  exp_track e7 = "world";
+  e7 = e6;
+  EXPECT_EQ(2U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  // move assignment
+  ConstructorTracker::Reset();
+  exp_track e8 = "hello";
+  exp_track e9 = "world";
+  e9 = std::move(e8);
+  EXPECT_EQ(2U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_assignment_called);
+
+  // swap
+  ConstructorTracker::Reset();
+  exp_track e10 = "hello";
+  exp_track e11 = "world";
+  std::swap(e10, e11);
+  EXPECT_EQ(2U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(2U, ConstructorTracker::move_assignment_called);
+}
+
+TEST(Expected, testNoCopyOnReturn) {
+  auto test = [](const std::string& in) -> exp_track {
+    if (in.empty()) {
+      return "literal string";
+    }
+    if (in == "test2") {
+      return ConstructorTracker(in + in + "2");
+    }
+    ConstructorTracker result(in + " " + in);
+    return result;
+  };
+
+  ConstructorTracker::Reset();
+  auto result1 = test("");
+  ASSERT_TRUE(result1.ok());
+  EXPECT_EQ("literal string", result1->string);
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  ConstructorTracker::Reset();
+  auto result2 = test("test2");
+  ASSERT_TRUE(result2.ok());
+  EXPECT_EQ("test2test22", result2->string);
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  ConstructorTracker::Reset();
+  auto result3 = test("test3");
+  ASSERT_TRUE(result3.ok());
+  EXPECT_EQ("test3 test3", result3->string);
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+}
+
+TEST(Expected, testNested) {
+  expected<exp_string, std::string> e = "hello";
+
+  EXPECT_TRUE(e.ok());
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e.value().has_value());
+  EXPECT_TRUE(e->ok());
+  EXPECT_EQ("hello", e.value().value());
+
+  expected<exp_string, std::string> e2 = unexpected("world");
+  EXPECT_FALSE(e2.has_value());
+  EXPECT_FALSE(e2.ok());
+  EXPECT_EQ("world", e2.error());
+
+  expected<exp_string, std::string> e3 = exp_string(unexpected("world"));
+  EXPECT_TRUE(e3.has_value());
+  EXPECT_FALSE(e3.value().has_value());
+  EXPECT_TRUE(e3.ok());
+  EXPECT_FALSE(e3->ok());
+  EXPECT_EQ("world", e3.value().error());
+}
+
+constexpr bool equals(const char* a, const char* b) {
+  return (a == nullptr && b == nullptr) ||
+      (a != nullptr && b != nullptr && *a == *b &&
+       (*a == '\0' || equals(a + 1, b + 1)));
+}
+
+TEST(Expected, testConstexpr) {
+  // Compliation error will occur if these expressions can't be
+  // evaluated at compile time
+  constexpr exp_int e(3);
+  constexpr exp_int::unexpected_type err(3);
+  constexpr int i = 4;
+
+  // default constructor
+  static_assert(exp_int().value() == 0);
+  // copy constructor
+  static_assert(exp_int(e).value() == 3);
+  // move constructor
+  static_assert(exp_int(exp_int(4)).value() == 4);
+  // copy construct from value
+  static_assert(exp_int(i).value() == 4);
+  // copy construct from unexpected
+  static_assert(exp_int(err).error() == 3);
+  // move costruct from unexpected
+  static_assert(exp_int(unexpected(3)).error() == 3);
+  // observers
+  static_assert(*exp_int(3) == 3);
+  static_assert(exp_int(3).has_value() == true);
+  static_assert(exp_int(3).value_or(4) == 3);
+
+  typedef expected<const char*, int> exp_s;
+  constexpr exp_s s("hello");
+  constexpr const char* c = "hello";
+  static_assert(equals(exp_s().value(), nullptr));
+  static_assert(equals(exp_s(s).value(), "hello"));
+  static_assert(equals(exp_s(exp_s("hello")).value(), "hello"));
+  static_assert(equals(exp_s("hello").value(), "hello"));
+  static_assert(equals(exp_s(c).value(), "hello"));
+}
+
+TEST(Expected, testWithNonConstructible) {
+   struct AssertNotConstructed {
+     AssertNotConstructed() = delete;
+   };
+
+   expected<int, AssertNotConstructed> v(42);
+   EXPECT_TRUE(v.has_value());
+   EXPECT_EQ(42, v.value());
+
+   expected<AssertNotConstructed, int> e(unexpected(42));
+   EXPECT_FALSE(e.has_value());
+   EXPECT_EQ(42, e.error());
+}
+
+TEST(Expected, testWithMoveOnlyType) {
+  typedef expected<std::unique_ptr<int>,std::unique_ptr<int>> exp_ptr;
+  exp_ptr e(std::make_unique<int>(3));
+  exp_ptr e2(unexpected(std::make_unique<int>(4)));
+
+  EXPECT_TRUE(e.has_value());
+  EXPECT_FALSE(e2.has_value());
+  EXPECT_EQ(3, *(e.value()));
+  EXPECT_EQ(4, *(e2.error()));
+
+  e2 = std::move(e);
+  EXPECT_TRUE(e.has_value());
+  EXPECT_TRUE(e2.has_value());
+  EXPECT_EQ(3, *(e2.value()));
+}
diff --git a/base/file.cpp b/base/file.cpp
index adc8984..97cc2b2 100644
--- a/base/file.cpp
+++ b/base/file.cpp
@@ -49,29 +49,54 @@
 #include "android-base/unique_fd.h"
 #include "android-base/utf8.h"
 
+namespace {
+
 #ifdef _WIN32
-int mkstemp(char* template_name) {
-  if (_mktemp(template_name) == nullptr) {
+static int mkstemp(char* name_template, size_t size_in_chars) {
+  std::wstring path;
+  CHECK(android::base::UTF8ToWide(name_template, &path))
+      << "path can't be converted to wchar: " << name_template;
+  if (_wmktemp_s(path.data(), path.size() + 1) != 0) {
     return -1;
   }
+
   // Use open() to match the close() that TemporaryFile's destructor does.
   // Use O_BINARY to match base file APIs.
-  return open(template_name, O_CREAT | O_EXCL | O_RDWR | O_BINARY, S_IRUSR | S_IWUSR);
+  int fd = _wopen(path.c_str(), O_CREAT | O_EXCL | O_RDWR | O_BINARY, S_IRUSR | S_IWUSR);
+  if (fd < 0) {
+    return -1;
+  }
+
+  std::string path_utf8;
+  CHECK(android::base::WideToUTF8(path, &path_utf8)) << "path can't be converted to utf8";
+  CHECK(strcpy_s(name_template, size_in_chars, path_utf8.c_str()) == 0)
+      << "utf8 path can't be assigned back to name_template";
+
+  return fd;
 }
 
-char* mkdtemp(char* template_name) {
-  if (_mktemp(template_name) == nullptr) {
+static char* mkdtemp(char* name_template, size_t size_in_chars) {
+  std::wstring path;
+  CHECK(android::base::UTF8ToWide(name_template, &path))
+      << "path can't be converted to wchar: " << name_template;
+
+  if (_wmktemp_s(path.data(), path.size() + 1) != 0) {
     return nullptr;
   }
-  if (_mkdir(template_name) == -1) {
+
+  if (_wmkdir(path.c_str()) != 0) {
     return nullptr;
   }
-  return template_name;
+
+  std::string path_utf8;
+  CHECK(android::base::WideToUTF8(path, &path_utf8)) << "path can't be converted to utf8";
+  CHECK(strcpy_s(name_template, size_in_chars, path_utf8.c_str()) == 0)
+      << "utf8 path can't be assigned back to name_template";
+
+  return name_template;
 }
 #endif
 
-namespace {
-
 std::string GetSystemTempDir() {
 #if defined(__ANDROID__)
   const auto* tmpdir = getenv("TMPDIR");
@@ -83,15 +108,20 @@
   // so try current directory if /data/local/tmp is not accessible.
   return ".";
 #elif defined(_WIN32)
-  char tmp_dir[MAX_PATH];
-  DWORD result = GetTempPathA(sizeof(tmp_dir), tmp_dir);  // checks TMP env
-  CHECK_NE(result, 0ul) << "GetTempPathA failed, error: " << GetLastError();
-  CHECK_LT(result, sizeof(tmp_dir)) << "path truncated to: " << result;
+  wchar_t tmp_dir_w[MAX_PATH];
+  DWORD result = GetTempPathW(std::size(tmp_dir_w), tmp_dir_w);  // checks TMP env
+  CHECK_NE(result, 0ul) << "GetTempPathW failed, error: " << GetLastError();
+  CHECK_LT(result, std::size(tmp_dir_w)) << "path truncated to: " << result;
 
   // GetTempPath() returns a path with a trailing slash, but init()
   // does not expect that, so remove it.
-  CHECK_EQ(tmp_dir[result - 1], '\\');
-  tmp_dir[result - 1] = '\0';
+  if (tmp_dir_w[result - 1] == L'\\') {
+    tmp_dir_w[result - 1] = L'\0';
+  }
+
+  std::string tmp_dir;
+  CHECK(android::base::WideToUTF8(tmp_dir_w, &tmp_dir)) << "path can't be converted to utf8";
+
   return tmp_dir;
 #else
   const auto* tmpdir = getenv("TMPDIR");
@@ -127,7 +157,11 @@
 
 void TemporaryFile::init(const std::string& tmp_dir) {
   snprintf(path, sizeof(path), "%s%cTemporaryFile-XXXXXX", tmp_dir.c_str(), OS_PATH_SEPARATOR);
+#if defined(_WIN32)
+  fd = mkstemp(path, sizeof(path));
+#else
   fd = mkstemp(path);
+#endif
 }
 
 TemporaryDir::TemporaryDir() {
@@ -167,7 +201,11 @@
 
 bool TemporaryDir::init(const std::string& tmp_dir) {
   snprintf(path, sizeof(path), "%s%cTemporaryDir-XXXXXX", tmp_dir.c_str(), OS_PATH_SEPARATOR);
+#if defined(_WIN32)
+  return (mkdtemp(path, sizeof(path)) != nullptr);
+#else
   return (mkdtemp(path) != nullptr);
+#endif
 }
 
 namespace android {
@@ -176,20 +214,20 @@
 // Versions of standard library APIs that support UTF-8 strings.
 using namespace android::base::utf8;
 
-bool ReadFdToString(int fd, std::string* content) {
+bool ReadFdToString(borrowed_fd fd, std::string* content) {
   content->clear();
 
   // Although original we had small files in mind, this code gets used for
   // very large files too, where the std::string growth heuristics might not
   // be suitable. https://code.google.com/p/android/issues/detail?id=258500.
   struct stat sb;
-  if (fstat(fd, &sb) != -1 && sb.st_size > 0) {
+  if (fstat(fd.get(), &sb) != -1 && sb.st_size > 0) {
     content->reserve(sb.st_size);
   }
 
-  char buf[BUFSIZ];
+  char buf[BUFSIZ] __attribute__((__uninitialized__));
   ssize_t n;
-  while ((n = TEMP_FAILURE_RETRY(read(fd, &buf[0], sizeof(buf)))) > 0) {
+  while ((n = TEMP_FAILURE_RETRY(read(fd.get(), &buf[0], sizeof(buf)))) > 0) {
     content->append(buf, n);
   }
   return (n == 0) ? true : false;
@@ -206,11 +244,11 @@
   return ReadFdToString(fd, content);
 }
 
-bool WriteStringToFd(const std::string& content, int fd) {
+bool WriteStringToFd(const std::string& content, borrowed_fd fd) {
   const char* p = content.data();
   size_t left = content.size();
   while (left > 0) {
-    ssize_t n = TEMP_FAILURE_RETRY(write(fd, p, left));
+    ssize_t n = TEMP_FAILURE_RETRY(write(fd.get(), p, left));
     if (n == -1) {
       return false;
     }
@@ -269,11 +307,11 @@
   return WriteStringToFd(content, fd) || CleanUpAfterFailedWrite(path);
 }
 
-bool ReadFully(int fd, void* data, size_t byte_count) {
+bool ReadFully(borrowed_fd fd, void* data, size_t byte_count) {
   uint8_t* p = reinterpret_cast<uint8_t*>(data);
   size_t remaining = byte_count;
   while (remaining > 0) {
-    ssize_t n = TEMP_FAILURE_RETRY(read(fd, p, remaining));
+    ssize_t n = TEMP_FAILURE_RETRY(read(fd.get(), p, remaining));
     if (n <= 0) return false;
     p += n;
     remaining -= n;
@@ -284,14 +322,14 @@
 #if defined(_WIN32)
 // Windows implementation of pread. Note that this DOES move the file descriptors read position,
 // but it does so atomically.
-static ssize_t pread(int fd, void* data, size_t byte_count, off64_t offset) {
+static ssize_t pread(borrowed_fd fd, void* data, size_t byte_count, off64_t offset) {
   DWORD bytes_read;
   OVERLAPPED overlapped;
   memset(&overlapped, 0, sizeof(OVERLAPPED));
   overlapped.Offset = static_cast<DWORD>(offset);
   overlapped.OffsetHigh = static_cast<DWORD>(offset >> 32);
-  if (!ReadFile(reinterpret_cast<HANDLE>(_get_osfhandle(fd)), data, static_cast<DWORD>(byte_count),
-                &bytes_read, &overlapped)) {
+  if (!ReadFile(reinterpret_cast<HANDLE>(_get_osfhandle(fd.get())), data,
+                static_cast<DWORD>(byte_count), &bytes_read, &overlapped)) {
     // In case someone tries to read errno (since this is masquerading as a POSIX call)
     errno = EIO;
     return -1;
@@ -300,10 +338,10 @@
 }
 #endif
 
-bool ReadFullyAtOffset(int fd, void* data, size_t byte_count, off64_t offset) {
+bool ReadFullyAtOffset(borrowed_fd fd, void* data, size_t byte_count, off64_t offset) {
   uint8_t* p = reinterpret_cast<uint8_t*>(data);
   while (byte_count > 0) {
-    ssize_t n = TEMP_FAILURE_RETRY(pread(fd, p, byte_count, offset));
+    ssize_t n = TEMP_FAILURE_RETRY(pread(fd.get(), p, byte_count, offset));
     if (n <= 0) return false;
     p += n;
     byte_count -= n;
@@ -312,11 +350,11 @@
   return true;
 }
 
-bool WriteFully(int fd, const void* data, size_t byte_count) {
+bool WriteFully(borrowed_fd fd, const void* data, size_t byte_count) {
   const uint8_t* p = reinterpret_cast<const uint8_t*>(data);
   size_t remaining = byte_count;
   while (remaining > 0) {
-    ssize_t n = TEMP_FAILURE_RETRY(write(fd, p, remaining));
+    ssize_t n = TEMP_FAILURE_RETRY(write(fd.get(), p, remaining));
     if (n == -1) return false;
     p += n;
     remaining -= n;
diff --git a/base/file_test.cpp b/base/file_test.cpp
index f64e81c..120228d 100644
--- a/base/file_test.cpp
+++ b/base/file_test.cpp
@@ -16,18 +16,25 @@
 
 #include "android-base/file.h"
 
+#include "android-base/utf8.h"
+
 #include <gtest/gtest.h>
 
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <wchar.h>
 
 #include <string>
 
 #if !defined(_WIN32)
 #include <pwd.h>
+#else
+#include <windows.h>
 #endif
 
+#include "android-base/logging.h"  // and must be after windows.h for ERROR
+
 TEST(file, ReadFileToString_ENOENT) {
   std::string s("hello");
   errno = 0;
@@ -38,7 +45,7 @@
 
 TEST(file, ReadFileToString_WriteStringToFile) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
   ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.path))
     << strerror(errno);
   std::string s;
@@ -70,7 +77,7 @@
 #if !defined(_WIN32)
 TEST(file, WriteStringToFile2) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
   ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.path, 0660,
                                                getuid(), getgid()))
       << strerror(errno);
@@ -86,9 +93,92 @@
 }
 #endif
 
+#if defined(_WIN32)
+TEST(file, NonUnicodeCharsWindows) {
+  constexpr auto kMaxEnvVariableValueSize = 32767;
+  std::wstring old_tmp;
+  old_tmp.resize(kMaxEnvVariableValueSize);
+  old_tmp.resize(GetEnvironmentVariableW(L"TMP", old_tmp.data(), old_tmp.size()));
+  if (old_tmp.empty()) {
+    // Can't continue with empty TMP folder.
+    return;
+  }
+
+  std::wstring new_tmp = old_tmp;
+  if (new_tmp.back() != L'\\') {
+    new_tmp.push_back(L'\\');
+  }
+
+  {
+    auto path(new_tmp + L"锦绣成都\\");
+    _wmkdir(path.c_str());
+    ASSERT_TRUE(SetEnvironmentVariableW(L"TMP", path.c_str()));
+
+    TemporaryFile tf;
+    ASSERT_NE(tf.fd, -1) << tf.path;
+    ASSERT_TRUE(android::base::WriteStringToFd("abc", tf.fd));
+
+    ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
+
+    std::string s;
+    ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s)) << strerror(errno);
+    EXPECT_EQ("abc", s);
+  }
+  {
+    auto path(new_tmp + L"директория с длинным именем\\");
+    _wmkdir(path.c_str());
+    ASSERT_TRUE(SetEnvironmentVariableW(L"TMP", path.c_str()));
+
+    TemporaryFile tf;
+    ASSERT_NE(tf.fd, -1) << tf.path;
+    ASSERT_TRUE(android::base::WriteStringToFd("abc", tf.fd));
+
+    ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
+
+    std::string s;
+    ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s)) << strerror(errno);
+    EXPECT_EQ("abc", s);
+  }
+  {
+    auto path(new_tmp + L"äüöß weiß\\");
+    _wmkdir(path.c_str());
+    ASSERT_TRUE(SetEnvironmentVariableW(L"TMP", path.c_str()));
+
+    TemporaryFile tf;
+    ASSERT_NE(tf.fd, -1) << tf.path;
+    ASSERT_TRUE(android::base::WriteStringToFd("abc", tf.fd));
+
+    ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
+
+    std::string s;
+    ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s)) << strerror(errno);
+    EXPECT_EQ("abc", s);
+  }
+
+  SetEnvironmentVariableW(L"TMP", old_tmp.c_str());
+}
+
+TEST(file, RootDirectoryWindows) {
+  constexpr auto kMaxEnvVariableValueSize = 32767;
+  std::wstring old_tmp;
+  bool tmp_is_empty = false;
+  old_tmp.resize(kMaxEnvVariableValueSize);
+  old_tmp.resize(GetEnvironmentVariableW(L"TMP", old_tmp.data(), old_tmp.size()));
+  if (old_tmp.empty()) {
+    tmp_is_empty = (GetLastError() == ERROR_ENVVAR_NOT_FOUND);
+  }
+  SetEnvironmentVariableW(L"TMP", L"C:");
+
+  TemporaryFile tf;
+  ASSERT_NE(tf.fd, -1) << tf.path;
+
+  SetEnvironmentVariableW(L"TMP", tmp_is_empty ? nullptr : old_tmp.c_str());
+}
+#endif
+
 TEST(file, WriteStringToFd) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
   ASSERT_TRUE(android::base::WriteStringToFd("abc", tf.fd));
 
   ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
@@ -100,7 +190,7 @@
 
 TEST(file, WriteFully) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
   ASSERT_TRUE(android::base::WriteFully(tf.fd, "abc", 3));
 
   ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
@@ -119,7 +209,7 @@
 
 TEST(file, RemoveFileIfExists) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
   close(tf.fd);
   tf.fd = -1;
   std::string err;
@@ -253,7 +343,7 @@
 
 TEST(file, ReadFileToString_capacity) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
 
   // For a huge file, the overhead should still be small.
   std::string s;
@@ -280,7 +370,7 @@
 
 TEST(file, ReadFileToString_capacity_0) {
   TemporaryFile tf;
-  ASSERT_TRUE(tf.fd != -1);
+  ASSERT_NE(tf.fd, -1) << tf.path;
 
   // Because /proc reports its files as zero-length, we don't actually trust
   // any file that claims to be zero-length. Rather than add increasingly
diff --git a/base/format_benchmark.cpp b/base/format_benchmark.cpp
new file mode 100644
index 0000000..9590b23
--- /dev/null
+++ b/base/format_benchmark.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/format.h"
+
+#include <limits>
+
+#include <benchmark/benchmark.h>
+
+#include "android-base/stringprintf.h"
+
+using android::base::StringPrintf;
+
+static void BenchmarkFormatInt(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(fmt::format("{} {} {}", 42, std::numeric_limits<int>::min(),
+                                         std::numeric_limits<int>::max()));
+  }
+}
+
+BENCHMARK(BenchmarkFormatInt);
+
+static void BenchmarkStringPrintfInt(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(StringPrintf("%d %d %d", 42, std::numeric_limits<int>::min(),
+                                          std::numeric_limits<int>::max()));
+  }
+}
+
+BENCHMARK(BenchmarkStringPrintfInt);
+
+static void BenchmarkFormatFloat(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(fmt::format("{} {} {}", 42.42, std::numeric_limits<float>::min(),
+                                         std::numeric_limits<float>::max()));
+  }
+}
+
+BENCHMARK(BenchmarkFormatFloat);
+
+static void BenchmarkStringPrintfFloat(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(StringPrintf("%f %f %f", 42.42, std::numeric_limits<float>::min(),
+                                          std::numeric_limits<float>::max()));
+  }
+}
+
+BENCHMARK(BenchmarkStringPrintfFloat);
+
+static void BenchmarkFormatStrings(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(fmt::format("{} hello there {}", "hi,", "!!"));
+  }
+}
+
+BENCHMARK(BenchmarkFormatStrings);
+
+static void BenchmarkStringPrintfStrings(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(StringPrintf("%s hello there %s", "hi,", "!!"));
+  }
+}
+
+BENCHMARK(BenchmarkStringPrintfStrings);
+
+// Run the benchmark
+BENCHMARK_MAIN();
diff --git a/base/include/android-base/cmsg.h b/base/include/android-base/cmsg.h
index 7f93ddc..e4197b1 100644
--- a/base/include/android-base/cmsg.h
+++ b/base/include/android-base/cmsg.h
@@ -51,20 +51,20 @@
 // Note that the write can return short if the socket type is SOCK_STREAM. When
 // this happens, file descriptors are still sent to the other end, but with
 // truncated data. For this reason, using SOCK_SEQPACKET or SOCK_DGRAM is recommended.
-ssize_t SendFileDescriptorVector(int sock, const void* data, size_t len,
+ssize_t SendFileDescriptorVector(borrowed_fd sock, const void* data, size_t len,
                                  const std::vector<int>& fds);
 
 // Receive file descriptors from a Unix domain socket.
 //
 // If more FDs (or bytes, for datagram sockets) are received than expected,
 // -1 is returned with errno set to EMSGSIZE, and all received FDs are thrown away.
-ssize_t ReceiveFileDescriptorVector(int sock, void* data, size_t len, size_t max_fds,
+ssize_t ReceiveFileDescriptorVector(borrowed_fd sock, void* data, size_t len, size_t max_fds,
                                     std::vector<android::base::unique_fd>* fds);
 
 // Helper for SendFileDescriptorVector that constructs a std::vector for you, e.g.:
 //   SendFileDescriptors(sock, "foo", 3, std::move(fd1), std::move(fd2))
 template <typename... Args>
-ssize_t SendFileDescriptors(int sock, const void* data, size_t len, Args&&... sent_fds) {
+ssize_t SendFileDescriptors(borrowed_fd sock, const void* data, size_t len, Args&&... sent_fds) {
   // Do not allow implicit conversion to int: people might try to do something along the lines of:
   //   SendFileDescriptors(..., std::move(a_unique_fd))
   // and be surprised when the unique_fd isn't closed afterwards.
@@ -79,7 +79,7 @@
 // If fewer file descriptors are received than requested, -1 is returned with errno set to ENOMSG.
 // In both cases, all arguments are cleared and any received FDs are thrown away.
 template <typename... Args>
-ssize_t ReceiveFileDescriptors(int sock, void* data, size_t len, Args&&... received_fds) {
+ssize_t ReceiveFileDescriptors(borrowed_fd sock, void* data, size_t len, Args&&... received_fds) {
   std::vector<unique_fd*> fds;
   Append(fds, std::forward<Args>(received_fds)...);
 
diff --git a/base/include/android-base/endian.h b/base/include/android-base/endian.h
index cbbd8c9..8fa6365 100644
--- a/base/include/android-base/endian.h
+++ b/base/include/android-base/endian.h
@@ -18,6 +18,9 @@
 
 /* A cross-platform equivalent of bionic's <sys/endian.h>. */
 
+/* For __BIONIC__ and __GLIBC__ */
+#include <sys/cdefs.h>
+
 #if defined(__BIONIC__)
 
 #include <sys/endian.h>
@@ -38,26 +41,34 @@
 #define betoh16(x) be16toh(x)
 #define betoh32(x) be32toh(x)
 #define betoh64(x) be64toh(x)
+#define letoh16(x) le16toh(x)
+#define letoh32(x) le32toh(x)
+#define letoh64(x) le64toh(x)
 
 #else
 
-/* Mac OS and Windows have nothing. */
-
-#define __LITTLE_ENDIAN 1234
-#define LITTLE_ENDIAN __LITTLE_ENDIAN
-
-#define __BIG_ENDIAN 4321
-#define BIG_ENDIAN __BIG_ENDIAN
-
-#define __BYTE_ORDER __LITTLE_ENDIAN
-#define BYTE_ORDER __BYTE_ORDER
-
+#if defined(__APPLE__)
+/* macOS has some of the basics. */
+#include <sys/_endian.h>
+#else
+/* Windows has some of the basics as well. */
+#include <sys/param.h>
+#include <winsock2.h>
+/* winsock2.h *must* be included before the following four macros. */
 #define htons(x) __builtin_bswap16(x)
 #define htonl(x) __builtin_bswap32(x)
-#define htonq(x) __builtin_bswap64(x)
-
 #define ntohs(x) __builtin_bswap16(x)
 #define ntohl(x) __builtin_bswap32(x)
+#endif
+
+/* Neither macOS nor Windows have the rest. */
+
+#define __LITTLE_ENDIAN 1234
+#define __BIG_ENDIAN 4321
+#define __BYTE_ORDER __LITTLE_ENDIAN
+
+#define htonq(x) __builtin_bswap64(x)
+
 #define ntohq(x) __builtin_bswap64(x)
 
 #define htobe16(x) __builtin_bswap16(x)
diff --git a/base/include/android-base/errno_restorer.h b/base/include/android-base/errno_restorer.h
new file mode 100644
index 0000000..1c8597c
--- /dev/null
+++ b/base/include/android-base/errno_restorer.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "errno.h"
+
+#include "android-base/macros.h"
+
+namespace android {
+namespace base {
+
+class ErrnoRestorer {
+ public:
+  ErrnoRestorer() : saved_errno_(errno) {}
+
+  ~ErrnoRestorer() { errno = saved_errno_; }
+
+  // Allow this object to be used as part of && operation.
+  operator bool() const { return true; }
+
+ private:
+  const int saved_errno_;
+
+  DISALLOW_COPY_AND_ASSIGN(ErrnoRestorer);
+};
+
+}  // namespace base
+}  // namespace android
diff --git a/base/include/android-base/expected.h b/base/include/android-base/expected.h
new file mode 100644
index 0000000..9470344
--- /dev/null
+++ b/base/include/android-base/expected.h
@@ -0,0 +1,744 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <algorithm>
+#include <initializer_list>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+// android::base::expected is an Android implementation of the std::expected
+// proposal.
+// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0323r7.html
+//
+// Usage:
+// using android::base::expected;
+// using android::base::unexpected;
+//
+// expected<double,std::string> safe_divide(double i, double j) {
+//   if (j == 0) return unexpected("divide by zero");
+//   else return i / j;
+// }
+//
+// void test() {
+//   auto q = safe_divide(10, 0);
+//   if (q) { printf("%f\n", q.value()); }
+//   else { printf("%s\n", q.error().c_str()); }
+// }
+//
+// When the proposal becomes part of the standard and is implemented by
+// libcxx, this will be removed and android::base::expected will be
+// type alias to std::expected.
+//
+
+namespace android {
+namespace base {
+
+// Synopsis
+template<class T, class E>
+    class expected;
+
+template<class E>
+    class unexpected;
+template<class E>
+  unexpected(E) -> unexpected<E>;
+
+template<class E>
+   class bad_expected_access;
+
+template<>
+   class bad_expected_access<void>;
+
+struct unexpect_t {
+   explicit unexpect_t() = default;
+};
+inline constexpr unexpect_t unexpect{};
+
+// macros for SFINAE
+#define _ENABLE_IF(...) \
+  , std::enable_if_t<(__VA_ARGS__)>* = nullptr
+
+// Define NODISCARD_EXPECTED to prevent expected<T,E> from being
+// ignored when used as a return value. This is off by default.
+#ifdef NODISCARD_EXPECTED
+#define _NODISCARD_ [[nodiscard]]
+#else
+#define _NODISCARD_
+#endif
+
+// Class expected
+template<class T, class E>
+class _NODISCARD_ expected {
+ public:
+  using value_type = T;
+  using error_type = E;
+  using unexpected_type = unexpected<E>;
+
+  template<class U>
+  using rebind = expected<U, error_type>;
+
+  // constructors
+  constexpr expected() = default;
+  constexpr expected(const expected& rhs) = default;
+  constexpr expected(expected&& rhs) noexcept = default;
+
+  template<class U, class G _ENABLE_IF(
+    std::is_constructible_v<T, const U&> &&
+    std::is_constructible_v<E, const G&> &&
+    !std::is_constructible_v<T, expected<U, G>&> &&
+    !std::is_constructible_v<T, expected<U, G>&&> &&
+    !std::is_constructible_v<T, const expected<U, G>&> &&
+    !std::is_constructible_v<T, const expected<U, G>&&> &&
+    !std::is_convertible_v<expected<U, G>&, T> &&
+    !std::is_convertible_v<expected<U, G>&&, T> &&
+    !std::is_convertible_v<const expected<U, G>&, T> &&
+    !std::is_convertible_v<const expected<U, G>&&, T> &&
+    !(!std::is_convertible_v<const U&, T> ||
+     !std::is_convertible_v<const G&, E>) /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(const expected<U, G>& rhs) {
+    if (rhs.has_value()) var_ = rhs.value();
+    else var_ = unexpected(rhs.error());
+  }
+
+  template<class U, class G _ENABLE_IF(
+    std::is_constructible_v<T, const U&> &&
+    std::is_constructible_v<E, const G&> &&
+    !std::is_constructible_v<T, expected<U, G>&> &&
+    !std::is_constructible_v<T, expected<U, G>&&> &&
+    !std::is_constructible_v<T, const expected<U, G>&> &&
+    !std::is_constructible_v<T, const expected<U, G>&&> &&
+    !std::is_convertible_v<expected<U, G>&, T> &&
+    !std::is_convertible_v<expected<U, G>&&, T> &&
+    !std::is_convertible_v<const expected<U, G>&, T> &&
+    !std::is_convertible_v<const expected<U, G>&&, T> &&
+    (!std::is_convertible_v<const U&, T> ||
+     !std::is_convertible_v<const G&, E>) /* explicit */
+  )>
+  constexpr explicit expected(const expected<U, G>& rhs) {
+    if (rhs.has_value()) var_ = rhs.value();
+    else var_ = unexpected(rhs.error());
+  }
+
+  template<class U, class G _ENABLE_IF(
+    std::is_constructible_v<T, const U&> &&
+    std::is_constructible_v<E, const G&> &&
+    !std::is_constructible_v<T, expected<U, G>&> &&
+    !std::is_constructible_v<T, expected<U, G>&&> &&
+    !std::is_constructible_v<T, const expected<U, G>&> &&
+    !std::is_constructible_v<T, const expected<U, G>&&> &&
+    !std::is_convertible_v<expected<U, G>&, T> &&
+    !std::is_convertible_v<expected<U, G>&&, T> &&
+    !std::is_convertible_v<const expected<U, G>&, T> &&
+    !std::is_convertible_v<const expected<U, G>&&, T> &&
+    !(!std::is_convertible_v<const U&, T> ||
+     !std::is_convertible_v<const G&, E>) /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(expected<U, G>&& rhs) {
+    if (rhs.has_value()) var_ = std::move(rhs.value());
+    else var_ = unexpected(std::move(rhs.error()));
+  }
+
+  template<class U, class G _ENABLE_IF(
+    std::is_constructible_v<T, const U&> &&
+    std::is_constructible_v<E, const G&> &&
+    !std::is_constructible_v<T, expected<U, G>&> &&
+    !std::is_constructible_v<T, expected<U, G>&&> &&
+    !std::is_constructible_v<T, const expected<U, G>&> &&
+    !std::is_constructible_v<T, const expected<U, G>&&> &&
+    !std::is_convertible_v<expected<U, G>&, T> &&
+    !std::is_convertible_v<expected<U, G>&&, T> &&
+    !std::is_convertible_v<const expected<U, G>&, T> &&
+    !std::is_convertible_v<const expected<U, G>&&, T> &&
+    (!std::is_convertible_v<const U&, T> ||
+     !std::is_convertible_v<const G&, E>) /* explicit */
+  )>
+  constexpr explicit expected(expected<U, G>&& rhs) {
+    if (rhs.has_value()) var_ = std::move(rhs.value());
+    else var_ = unexpected(std::move(rhs.error()));
+  }
+
+  template <class U = T _ENABLE_IF(
+                std::is_constructible_v<T, U&&> &&
+                !std::is_same_v<std::remove_cv_t<std::remove_reference_t<U>>, std::in_place_t> &&
+                !std::is_same_v<expected<T, E>, std::remove_cv_t<std::remove_reference_t<U>>> &&
+                !std::is_same_v<unexpected<E>, std::remove_cv_t<std::remove_reference_t<U>>> &&
+                std::is_convertible_v<U&&, T> /* non-explicit */
+                )>
+  // NOLINTNEXTLINE(google-explicit-constructor,bugprone-forwarding-reference-overload)
+  constexpr expected(U&& v) : var_(std::in_place_index<0>, std::forward<U>(v)) {}
+
+  template <class U = T _ENABLE_IF(
+                std::is_constructible_v<T, U&&> &&
+                !std::is_same_v<std::remove_cv_t<std::remove_reference_t<U>>, std::in_place_t> &&
+                !std::is_same_v<expected<T, E>, std::remove_cv_t<std::remove_reference_t<U>>> &&
+                !std::is_same_v<unexpected<E>, std::remove_cv_t<std::remove_reference_t<U>>> &&
+                !std::is_convertible_v<U&&, T> /* explicit */
+                )>
+  // NOLINTNEXTLINE(bugprone-forwarding-reference-overload)
+  constexpr explicit expected(U&& v) : var_(std::in_place_index<0>, T(std::forward<U>(v))) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, const G&> &&
+    std::is_convertible_v<const G&, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(const unexpected<G>& e)
+  : var_(std::in_place_index<1>, e.value()) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, const G&> &&
+    !std::is_convertible_v<const G&, E> /* explicit */
+  )>
+  constexpr explicit expected(const unexpected<G>& e)
+  : var_(std::in_place_index<1>, E(e.value())) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, G&&> &&
+    std::is_convertible_v<G&&, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(unexpected<G>&& e)
+  : var_(std::in_place_index<1>, std::move(e.value())) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, G&&> &&
+    !std::is_convertible_v<G&&, E> /* explicit */
+  )>
+  constexpr explicit expected(unexpected<G>&& e)
+  : var_(std::in_place_index<1>, E(std::move(e.value()))) {}
+
+  template<class... Args _ENABLE_IF(
+    std::is_constructible_v<T, Args&&...>
+  )>
+  constexpr explicit expected(std::in_place_t, Args&&... args)
+  : var_(std::in_place_index<0>, std::forward<Args>(args)...) {}
+
+  template<class U, class... Args _ENABLE_IF(
+    std::is_constructible_v<T, std::initializer_list<U>&, Args...>
+  )>
+  constexpr explicit expected(std::in_place_t, std::initializer_list<U> il, Args&&... args)
+  : var_(std::in_place_index<0>, il, std::forward<Args>(args)...) {}
+
+  template<class... Args _ENABLE_IF(
+    std::is_constructible_v<E, Args...>
+  )>
+  constexpr explicit expected(unexpect_t, Args&&... args)
+  : var_(unexpected_type(std::forward<Args>(args)...)) {}
+
+  template<class U, class... Args _ENABLE_IF(
+    std::is_constructible_v<E, std::initializer_list<U>&, Args...>
+  )>
+  constexpr explicit expected(unexpect_t, std::initializer_list<U> il, Args&&... args)
+  : var_(unexpected_type(il, std::forward<Args>(args)...)) {}
+
+  // destructor
+  ~expected() = default;
+
+  // assignment
+  // Note: SFNAIE doesn't work here because assignment operator should be
+  // non-template. We could workaround this by defining a templated parent class
+  // having the assignment operator. This incomplete implementation however
+  // doesn't allow us to copy assign expected<T,E> even when T is non-copy
+  // assignable. The copy assignment will fail by the underlying std::variant
+  // anyway though the error message won't be clear.
+  expected& operator=(const expected& rhs) = default;
+
+  // Note for SFNAIE above applies to here as well
+  expected& operator=(expected&& rhs) noexcept(
+      std::is_nothrow_move_assignable_v<T>&& std::is_nothrow_move_assignable_v<E>) = default;
+
+  template <class U = T _ENABLE_IF(
+                !std::is_void_v<T> &&
+                !std::is_same_v<expected<T, E>, std::remove_cv_t<std::remove_reference_t<U>>> &&
+                !std::conjunction_v<std::is_scalar<T>, std::is_same<T, std::decay_t<U>>> &&
+                std::is_constructible_v<T, U> && std::is_assignable_v<T&, U> &&
+                std::is_nothrow_move_constructible_v<E>)>
+  expected& operator=(U&& rhs) {
+    var_ = T(std::forward<U>(rhs));
+    return *this;
+  }
+
+  template<class G = E>
+  expected& operator=(const unexpected<G>& rhs) {
+    var_ = rhs;
+    return *this;
+  }
+
+  template<class G = E _ENABLE_IF(
+    std::is_nothrow_move_constructible_v<G> &&
+    std::is_move_assignable_v<G>
+  )>
+  expected& operator=(unexpected<G>&& rhs) {
+    var_ = std::move(rhs);
+    return *this;
+  }
+
+  // modifiers
+  template<class... Args _ENABLE_IF(
+    std::is_nothrow_constructible_v<T, Args...>
+  )>
+  T& emplace(Args&&... args) {
+    expected(std::in_place, std::forward<Args>(args)...).swap(*this);
+    return value();
+  }
+
+  template<class U, class... Args _ENABLE_IF(
+    std::is_nothrow_constructible_v<T, std::initializer_list<U>&, Args...>
+  )>
+  T& emplace(std::initializer_list<U> il, Args&&... args) {
+    expected(std::in_place, il, std::forward<Args>(args)...).swap(*this);
+    return value();
+  }
+
+  // swap
+  template<typename U = T, typename = std::enable_if_t<(
+    std::is_swappable_v<U> &&
+    std::is_swappable_v<E> &&
+    (std::is_move_constructible_v<U> ||
+     std::is_move_constructible_v<E>))>>
+  void swap(expected& rhs) noexcept(
+    std::is_nothrow_move_constructible_v<T> &&
+    std::is_nothrow_swappable_v<T> &&
+    std::is_nothrow_move_constructible_v<E> &&
+    std::is_nothrow_swappable_v<E>) {
+    var_.swap(rhs.var_);
+  }
+
+  // observers
+  constexpr const T* operator->() const { return std::addressof(value()); }
+  constexpr T* operator->() { return std::addressof(value()); }
+  constexpr const T& operator*() const& { return value(); }
+  constexpr T& operator*() & { return value(); }
+  constexpr const T&& operator*() const&& { return std::move(std::get<T>(var_)); }
+  constexpr T&& operator*() && { return std::move(std::get<T>(var_)); }
+
+  constexpr explicit operator bool() const noexcept { return has_value(); }
+  constexpr bool has_value() const noexcept { return var_.index() == 0; }
+  constexpr bool ok() const noexcept { return has_value(); }
+
+  constexpr const T& value() const& { return std::get<T>(var_); }
+  constexpr T& value() & { return std::get<T>(var_); }
+  constexpr const T&& value() const&& { return std::move(std::get<T>(var_)); }
+  constexpr T&& value() && { return std::move(std::get<T>(var_)); }
+
+  constexpr const E& error() const& { return std::get<unexpected_type>(var_).value(); }
+  constexpr E& error() & { return std::get<unexpected_type>(var_).value(); }
+  constexpr const E&& error() const&& { return std::move(std::get<unexpected_type>(var_)).value(); }
+  constexpr E&& error() && { return std::move(std::get<unexpected_type>(var_)).value(); }
+
+  template<class U _ENABLE_IF(
+    std::is_copy_constructible_v<T> &&
+    std::is_convertible_v<U, T>
+  )>
+  constexpr T value_or(U&& v) const& {
+    if (has_value()) return value();
+    else return static_cast<T>(std::forward<U>(v));
+  }
+
+  template<class U _ENABLE_IF(
+    std::is_move_constructible_v<T> &&
+    std::is_convertible_v<U, T>
+  )>
+  constexpr T value_or(U&& v) && {
+    if (has_value()) return std::move(value());
+    else return static_cast<T>(std::forward<U>(v));
+  }
+
+  // expected equality operators
+  template<class T1, class E1, class T2, class E2>
+  friend constexpr bool operator==(const expected<T1, E1>& x, const expected<T2, E2>& y);
+  template<class T1, class E1, class T2, class E2>
+  friend constexpr bool operator!=(const expected<T1, E1>& x, const expected<T2, E2>& y);
+
+  // Comparison with unexpected<E>
+  template<class T1, class E1, class E2>
+  friend constexpr bool operator==(const expected<T1, E1>&, const unexpected<E2>&);
+  template<class T1, class E1, class E2>
+  friend constexpr bool operator==(const unexpected<E2>&, const expected<T1, E1>&);
+  template<class T1, class E1, class E2>
+  friend constexpr bool operator!=(const expected<T1, E1>&, const unexpected<E2>&);
+  template<class T1, class E1, class E2>
+  friend constexpr bool operator!=(const unexpected<E2>&, const expected<T1, E1>&);
+
+  // Specialized algorithms
+  template<class T1, class E1>
+  friend void swap(expected<T1, E1>&, expected<T1, E1>&) noexcept;
+
+ private:
+  std::variant<value_type, unexpected_type> var_;
+};
+
+template<class T1, class E1, class T2, class E2>
+constexpr bool operator==(const expected<T1, E1>& x, const expected<T2, E2>& y) {
+  if (x.has_value() != y.has_value()) return false;
+  if (!x.has_value()) return x.error() == y.error();
+  return *x == *y;
+}
+
+template<class T1, class E1, class T2, class E2>
+constexpr bool operator!=(const expected<T1, E1>& x, const expected<T2, E2>& y) {
+  return !(x == y);
+}
+
+// Comparison with unexpected<E>
+template<class T1, class E1, class E2>
+constexpr bool operator==(const expected<T1, E1>& x, const unexpected<E2>& y) {
+  return !x.has_value() && (x.error() == y.value());
+}
+template<class T1, class E1, class E2>
+constexpr bool operator==(const unexpected<E2>& x, const expected<T1, E1>& y) {
+  return !y.has_value() && (x.value() == y.error());
+}
+template<class T1, class E1, class E2>
+constexpr bool operator!=(const expected<T1, E1>& x, const unexpected<E2>& y) {
+  return x.has_value() || (x.error() != y.value());
+}
+template<class T1, class E1, class E2>
+constexpr bool operator!=(const unexpected<E2>& x, const expected<T1, E1>& y) {
+  return y.has_value() || (x.value() != y.error());
+}
+
+template<class E>
+class _NODISCARD_ expected<void, E> {
+ public:
+  using value_type = void;
+  using error_type = E;
+  using unexpected_type = unexpected<E>;
+
+  // constructors
+  constexpr expected() = default;
+  constexpr expected(const expected& rhs) = default;
+  constexpr expected(expected&& rhs) noexcept = default;
+
+  template<class U, class G _ENABLE_IF(
+    std::is_void_v<U> &&
+    std::is_convertible_v<const G&, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(const expected<U, G>& rhs) {
+    if (!rhs.has_value()) var_ = unexpected(rhs.error());
+  }
+
+  template<class U, class G _ENABLE_IF(
+    std::is_void_v<U> &&
+    !std::is_convertible_v<const G&, E> /* explicit */
+  )>
+  constexpr explicit expected(const expected<U, G>& rhs) {
+    if (!rhs.has_value()) var_ = unexpected(rhs.error());
+  }
+
+  template<class U, class G _ENABLE_IF(
+    std::is_void_v<U> &&
+    std::is_convertible_v<const G&&, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(expected<U, G>&& rhs) {
+    if (!rhs.has_value()) var_ = unexpected(std::move(rhs.error()));
+  }
+
+  template<class U, class G _ENABLE_IF(
+    std::is_void_v<U> &&
+    !std::is_convertible_v<const G&&, E> /* explicit */
+  )>
+  constexpr explicit expected(expected<U, G>&& rhs) {
+    if (!rhs.has_value()) var_ = unexpected(std::move(rhs.error()));
+  }
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, const G&> &&
+    std::is_convertible_v<const G&, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(const unexpected<G>& e)
+  : var_(std::in_place_index<1>, e.value()) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, const G&> &&
+    !std::is_convertible_v<const G&, E> /* explicit */
+  )>
+  constexpr explicit expected(const unexpected<G>& e)
+  : var_(std::in_place_index<1>, E(e.value())) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, G&&> &&
+    std::is_convertible_v<G&&, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr expected(unexpected<G>&& e)
+  : var_(std::in_place_index<1>, std::move(e.value())) {}
+
+  template<class G = E _ENABLE_IF(
+    std::is_constructible_v<E, G&&> &&
+    !std::is_convertible_v<G&&, E> /* explicit */
+  )>
+  constexpr explicit expected(unexpected<G>&& e)
+  : var_(std::in_place_index<1>, E(std::move(e.value()))) {}
+
+  template<class... Args _ENABLE_IF(
+    sizeof...(Args) == 0
+  )>
+  constexpr explicit expected(std::in_place_t, Args&&...) {}
+
+  template<class... Args _ENABLE_IF(
+    std::is_constructible_v<E, Args...>
+  )>
+  constexpr explicit expected(unexpect_t, Args&&... args)
+  : var_(unexpected_type(std::forward<Args>(args)...)) {}
+
+  template<class U, class... Args _ENABLE_IF(
+    std::is_constructible_v<E, std::initializer_list<U>&, Args...>
+  )>
+  constexpr explicit expected(unexpect_t, std::initializer_list<U> il, Args&&... args)
+  : var_(unexpected_type(il, std::forward<Args>(args)...)) {}
+
+  // destructor
+  ~expected() = default;
+
+  // assignment
+  // Note: SFNAIE doesn't work here because assignment operator should be
+  // non-template. We could workaround this by defining a templated parent class
+  // having the assignment operator. This incomplete implementation however
+  // doesn't allow us to copy assign expected<T,E> even when T is non-copy
+  // assignable. The copy assignment will fail by the underlying std::variant
+  // anyway though the error message won't be clear.
+  expected& operator=(const expected& rhs) = default;
+
+  // Note for SFNAIE above applies to here as well
+  expected& operator=(expected&& rhs) noexcept(std::is_nothrow_move_assignable_v<E>) = default;
+
+  template<class G = E>
+  expected& operator=(const unexpected<G>& rhs) {
+    var_ = rhs;
+    return *this;
+  }
+
+  template<class G = E _ENABLE_IF(
+    std::is_nothrow_move_constructible_v<G> &&
+    std::is_move_assignable_v<G>
+  )>
+  expected& operator=(unexpected<G>&& rhs) {
+    var_ = std::move(rhs);
+    return *this;
+  }
+
+  // modifiers
+  void emplace() {
+    var_ = std::monostate();
+  }
+
+  // swap
+  template<typename = std::enable_if_t<
+    std::is_swappable_v<E>>
+  >
+  void swap(expected& rhs) noexcept(std::is_nothrow_move_constructible_v<E>) {
+    var_.swap(rhs.var_);
+  }
+
+  // observers
+  constexpr explicit operator bool() const noexcept { return has_value(); }
+  constexpr bool has_value() const noexcept { return var_.index() == 0; }
+  constexpr bool ok() const noexcept { return has_value(); }
+
+  constexpr void value() const& { if (!has_value()) std::get<0>(var_); }
+
+  constexpr const E& error() const& { return std::get<unexpected_type>(var_).value(); }
+  constexpr E& error() & { return std::get<unexpected_type>(var_).value(); }
+  constexpr const E&& error() const&& { return std::move(std::get<unexpected_type>(var_)).value(); }
+  constexpr E&& error() && { return std::move(std::get<unexpected_type>(var_)).value(); }
+
+  // expected equality operators
+  template<class E1, class E2>
+  friend constexpr bool operator==(const expected<void, E1>& x, const expected<void, E2>& y);
+
+  // Specialized algorithms
+  template<class T1, class E1>
+  friend void swap(expected<T1, E1>&, expected<T1, E1>&) noexcept;
+
+ private:
+  std::variant<std::monostate, unexpected_type> var_;
+};
+
+template<class E1, class E2>
+constexpr bool operator==(const expected<void, E1>& x, const expected<void, E2>& y) {
+  if (x.has_value() != y.has_value()) return false;
+  if (!x.has_value()) return x.error() == y.error();
+  return true;
+}
+
+template<class T1, class E1, class E2>
+constexpr bool operator==(const expected<T1, E1>& x, const expected<void, E2>& y) {
+  if (x.has_value() != y.has_value()) return false;
+  if (!x.has_value()) return x.error() == y.error();
+  return false;
+}
+
+template<class E1, class T2, class E2>
+constexpr bool operator==(const expected<void, E1>& x, const expected<T2, E2>& y) {
+  if (x.has_value() != y.has_value()) return false;
+  if (!x.has_value()) return x.error() == y.error();
+  return false;
+}
+
+template<class E>
+class unexpected {
+ public:
+  // constructors
+  constexpr unexpected(const unexpected&) = default;
+  constexpr unexpected(unexpected&&) noexcept(std::is_nothrow_move_constructible_v<E>) = default;
+
+  template <class Err = E _ENABLE_IF(
+                std::is_constructible_v<E, Err> &&
+                !std::is_same_v<std::remove_cv_t<std::remove_reference_t<E>>, std::in_place_t> &&
+                !std::is_same_v<std::remove_cv_t<std::remove_reference_t<E>>, unexpected>)>
+  // NOLINTNEXTLINE(google-explicit-constructor,bugprone-forwarding-reference-overload)
+  constexpr unexpected(Err&& e) : val_(std::forward<Err>(e)) {}
+
+  template<class U, class... Args _ENABLE_IF(
+    std::is_constructible_v<E, std::initializer_list<U>&, Args...>
+  )>
+  constexpr explicit unexpected(std::in_place_t, std::initializer_list<U> il, Args&&... args)
+  : val_(il, std::forward<Args>(args)...) {}
+
+  template<class Err _ENABLE_IF(
+    std::is_constructible_v<E, Err> &&
+    !std::is_constructible_v<E, unexpected<Err>&> &&
+    !std::is_constructible_v<E, unexpected<Err>> &&
+    !std::is_constructible_v<E, const unexpected<Err>&> &&
+    !std::is_constructible_v<E, const unexpected<Err>> &&
+    !std::is_convertible_v<unexpected<Err>&, E> &&
+    !std::is_convertible_v<unexpected<Err>, E> &&
+    !std::is_convertible_v<const unexpected<Err>&, E> &&
+    !std::is_convertible_v<const unexpected<Err>, E> &&
+    std::is_convertible_v<Err, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr unexpected(const unexpected<Err>& rhs)
+  : val_(rhs.value()) {}
+
+  template<class Err _ENABLE_IF(
+    std::is_constructible_v<E, Err> &&
+    !std::is_constructible_v<E, unexpected<Err>&> &&
+    !std::is_constructible_v<E, unexpected<Err>> &&
+    !std::is_constructible_v<E, const unexpected<Err>&> &&
+    !std::is_constructible_v<E, const unexpected<Err>> &&
+    !std::is_convertible_v<unexpected<Err>&, E> &&
+    !std::is_convertible_v<unexpected<Err>, E> &&
+    !std::is_convertible_v<const unexpected<Err>&, E> &&
+    !std::is_convertible_v<const unexpected<Err>, E> &&
+    !std::is_convertible_v<Err, E> /* explicit */
+  )>
+  constexpr explicit unexpected(const unexpected<Err>& rhs)
+  : val_(E(rhs.value())) {}
+
+  template<class Err _ENABLE_IF(
+    std::is_constructible_v<E, Err> &&
+    !std::is_constructible_v<E, unexpected<Err>&> &&
+    !std::is_constructible_v<E, unexpected<Err>> &&
+    !std::is_constructible_v<E, const unexpected<Err>&> &&
+    !std::is_constructible_v<E, const unexpected<Err>> &&
+    !std::is_convertible_v<unexpected<Err>&, E> &&
+    !std::is_convertible_v<unexpected<Err>, E> &&
+    !std::is_convertible_v<const unexpected<Err>&, E> &&
+    !std::is_convertible_v<const unexpected<Err>, E> &&
+    std::is_convertible_v<Err, E> /* non-explicit */
+  )>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  constexpr unexpected(unexpected<Err>&& rhs)
+  : val_(std::move(rhs.value())) {}
+
+  template<class Err _ENABLE_IF(
+    std::is_constructible_v<E, Err> &&
+    !std::is_constructible_v<E, unexpected<Err>&> &&
+    !std::is_constructible_v<E, unexpected<Err>> &&
+    !std::is_constructible_v<E, const unexpected<Err>&> &&
+    !std::is_constructible_v<E, const unexpected<Err>> &&
+    !std::is_convertible_v<unexpected<Err>&, E> &&
+    !std::is_convertible_v<unexpected<Err>, E> &&
+    !std::is_convertible_v<const unexpected<Err>&, E> &&
+    !std::is_convertible_v<const unexpected<Err>, E> &&
+    !std::is_convertible_v<Err, E> /* explicit */
+  )>
+  constexpr explicit unexpected(unexpected<Err>&& rhs)
+  : val_(E(std::move(rhs.value()))) {}
+
+  // assignment
+  constexpr unexpected& operator=(const unexpected&) = default;
+  constexpr unexpected& operator=(unexpected&&) noexcept(std::is_nothrow_move_assignable_v<E>) =
+      default;
+  template<class Err = E>
+  constexpr unexpected& operator=(const unexpected<Err>& rhs) {
+    val_ = rhs.value();
+    return *this;
+  }
+  template<class Err = E>
+  constexpr unexpected& operator=(unexpected<Err>&& rhs) {
+    val_ = std::forward<E>(rhs.value());
+    return *this;
+  }
+
+  // observer
+  constexpr const E& value() const& noexcept { return val_; }
+  constexpr E& value() & noexcept { return val_; }
+  constexpr const E&& value() const&& noexcept { return std::move(val_); }
+  constexpr E&& value() && noexcept { return std::move(val_); }
+
+  void swap(unexpected& other) noexcept(std::is_nothrow_swappable_v<E>) {
+    std::swap(val_, other.val_);
+  }
+
+  template<class E1, class E2>
+  friend constexpr bool
+  operator==(const unexpected<E1>& e1, const unexpected<E2>& e2);
+  template<class E1, class E2>
+  friend constexpr bool
+  operator!=(const unexpected<E1>& e1, const unexpected<E2>& e2);
+
+  template<class E1>
+  friend void swap(unexpected<E1>& x, unexpected<E1>& y) noexcept(noexcept(x.swap(y)));
+
+ private:
+  E val_;
+};
+
+template<class E1, class E2>
+constexpr bool
+operator==(const unexpected<E1>& e1, const unexpected<E2>& e2) {
+  return e1.value() == e2.value();
+}
+
+template<class E1, class E2>
+constexpr bool
+operator!=(const unexpected<E1>& e1, const unexpected<E2>& e2) {
+  return e1.value() != e2.value();
+}
+
+template<class E1>
+void swap(unexpected<E1>& x, unexpected<E1>& y) noexcept(noexcept(x.swap(y))) {
+  x.swap(y);
+}
+
+// TODO: bad_expected_access class
+
+#undef _ENABLE_IF
+#undef _NODISCARD_
+
+}  // namespace base
+}  // namespace android
diff --git a/base/include/android-base/file.h b/base/include/android-base/file.h
index f8748b5..c622562 100644
--- a/base/include/android-base/file.h
+++ b/base/include/android-base/file.h
@@ -21,8 +21,9 @@
 
 #include <string>
 
-#include <android-base/macros.h>
+#include "android-base/macros.h"
 #include "android-base/off64_t.h"
+#include "android-base/unique_fd.h"
 
 #if !defined(_WIN32) && !defined(O_BINARY)
 /** Windows needs O_BINARY, but Unix never mangles line endings. */
@@ -77,13 +78,13 @@
 namespace android {
 namespace base {
 
-bool ReadFdToString(int fd, std::string* content);
+bool ReadFdToString(borrowed_fd fd, std::string* content);
 bool ReadFileToString(const std::string& path, std::string* content,
                       bool follow_symlinks = false);
 
 bool WriteStringToFile(const std::string& content, const std::string& path,
                        bool follow_symlinks = false);
-bool WriteStringToFd(const std::string& content, int fd);
+bool WriteStringToFd(const std::string& content, borrowed_fd fd);
 
 #if !defined(_WIN32)
 bool WriteStringToFile(const std::string& content, const std::string& path,
@@ -91,7 +92,7 @@
                        bool follow_symlinks = false);
 #endif
 
-bool ReadFully(int fd, void* data, size_t byte_count);
+bool ReadFully(borrowed_fd fd, void* data, size_t byte_count);
 
 // Reads `byte_count` bytes from the file descriptor at the specified offset.
 // Returns false if there was an IO error or EOF was reached before reading `byte_count` bytes.
@@ -101,9 +102,9 @@
 // get modified. This means that ReadFullyAtOffset can be used concurrently with other calls to the
 // same function, but concurrently seeking or reading incrementally can lead to unexpected
 // behavior.
-bool ReadFullyAtOffset(int fd, void* data, size_t byte_count, off64_t offset);
+bool ReadFullyAtOffset(borrowed_fd fd, void* data, size_t byte_count, off64_t offset);
 
-bool WriteFully(int fd, const void* data, size_t byte_count);
+bool WriteFully(borrowed_fd fd, const void* data, size_t byte_count);
 
 bool RemoveFileIfExists(const std::string& path, std::string* err = nullptr);
 
diff --git a/base/include/android-base/format.h b/base/include/android-base/format.h
new file mode 100644
index 0000000..330040d
--- /dev/null
+++ b/base/include/android-base/format.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+// We include fmtlib here as an alias, since libbase will have fmtlib statically linked already.
+// It is accessed through its normal fmt:: namespace.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wshadow"
+#include <fmt/chrono.h>
+#pragma clang diagnostic pop
+#include <fmt/core.h>
+#include <fmt/format.h>
+#include <fmt/ostream.h>
+#include <fmt/printf.h>
diff --git a/base/include/android-base/logging.h b/base/include/android-base/logging.h
index f94cc25..26827fb 100644
--- a/base/include/android-base/logging.h
+++ b/base/include/android-base/logging.h
@@ -64,6 +64,7 @@
 #include <memory>
 #include <ostream>
 
+#include "android-base/errno_restorer.h"
 #include "android-base/macros.h"
 
 // Note: DO NOT USE DIRECTLY. Use LOG_TAG instead.
@@ -85,7 +86,7 @@
   INFO,
   WARNING,
   ERROR,
-  FATAL_WITHOUT_ABORT,
+  FATAL_WITHOUT_ABORT,  // For loggability tests, this is considered identical to FATAL.
   FATAL,
 };
 
@@ -93,6 +94,8 @@
   DEFAULT,
   MAIN,
   SYSTEM,
+  RADIO,
+  CRASH,
 };
 
 using LogFunction = std::function<void(LogId, LogSeverity, const char*, const char*,
@@ -113,12 +116,12 @@
 
 void DefaultAborter(const char* abort_message);
 
-std::string GetDefaultTag();
 void SetDefaultTag(const std::string& tag);
 
-#ifdef __ANDROID__
-// We expose this even though it is the default because a user that wants to
-// override the default log buffer will have to construct this themselves.
+// The LogdLogger sends chunks of up to ~4000 bytes at a time to logd.  It does not prevent other
+// threads from writing to logd between sending each chunk, so other threads may interleave their
+// messages.  If preventing interleaving is required, then a custom logger that takes a lock before
+// calling this logger should be provided.
 class LogdLogger {
  public:
   explicit LogdLogger(LogId default_log_id = android::base::MAIN);
@@ -129,7 +132,6 @@
  private:
   LogId default_log_id_;
 };
-#endif
 
 // Configure logging based on ANDROID_LOG_TAGS environment variable.
 // We need to parse a string that looks like
@@ -155,27 +157,6 @@
 // Replace the current aborter.
 void SetAborter(AbortFunction&& aborter);
 
-class ErrnoRestorer {
- public:
-  ErrnoRestorer()
-      : saved_errno_(errno) {
-  }
-
-  ~ErrnoRestorer() {
-    errno = saved_errno_;
-  }
-
-  // Allow this object to be used as part of && operation.
-  operator bool() const {
-    return true;
-  }
-
- private:
-  const int saved_errno_;
-
-  DISALLOW_COPY_AND_ASSIGN(ErrnoRestorer);
-};
-
 // A helper macro that produces an expression that accepts both a qualified name and an
 // unqualified name for a LogSeverity, and returns a LogSeverity value.
 // Note: DO NOT USE DIRECTLY. This is an implementation detail.
@@ -211,8 +192,8 @@
 #define ABORT_AFTER_LOG_FATAL_EXPR(x) ABORT_AFTER_LOG_EXPR_IF(true, x)
 
 // Defines whether the given severity will be logged or silently swallowed.
-#define WOULD_LOG(severity) \
-  (UNLIKELY((SEVERITY_LAMBDA(severity)) >= ::android::base::GetMinimumLogSeverity()) || \
+#define WOULD_LOG(severity)                                                              \
+  (UNLIKELY(::android::base::ShouldLog(SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL)) || \
    MUST_LOG_MESSAGE(severity))
 
 // Get an ostream that can be used for logging at the given severity and to the default
@@ -222,20 +203,16 @@
 // 1) This will not check whether the severity is high enough. One should use WOULD_LOG to filter
 //    usage manually.
 // 2) This does not save and restore errno.
-#define LOG_STREAM(severity) LOG_STREAM_TO(DEFAULT, severity)
-
-// Get an ostream that can be used for logging at the given severity and to the
-// given destination. The same notes as for LOG_STREAM apply.
-#define LOG_STREAM_TO(dest, severity)                                           \
-  ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::dest,        \
-                              SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, -1) \
+#define LOG_STREAM(severity)                                                                    \
+  ::android::base::LogMessage(__FILE__, __LINE__, SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, \
+                              -1)                                                               \
       .stream()
 
 // Logs a message to logcat on Android otherwise to stderr. If the severity is
 // FATAL it also causes an abort. For example:
 //
 //     LOG(FATAL) << "We didn't expect to reach here";
-#define LOG(severity) LOG_TO(DEFAULT, severity)
+#define LOG(severity) LOGGING_PREAMBLE(severity) && LOG_STREAM(severity)
 
 // Checks if we want to log something, and sets up appropriate RAII objects if
 // so.
@@ -245,21 +222,12 @@
    ABORT_AFTER_LOG_EXPR_IF((SEVERITY_LAMBDA(severity)) == ::android::base::FATAL, true) && \
    ::android::base::ErrnoRestorer())
 
-// Logs a message to logcat with the specified log ID on Android otherwise to
-// stderr. If the severity is FATAL it also causes an abort.
-// Use an expression here so we can support the << operator following the macro,
-// like "LOG(DEBUG) << xxx;".
-#define LOG_TO(dest, severity) LOGGING_PREAMBLE(severity) && LOG_STREAM_TO(dest, severity)
-
 // A variant of LOG that also logs the current errno value. To be used when
 // library calls fail.
-#define PLOG(severity) PLOG_TO(DEFAULT, severity)
-
-// Behaves like PLOG, but logs to the specified log ID.
-#define PLOG_TO(dest, severity)                                                        \
-  LOGGING_PREAMBLE(severity) &&                                                        \
-      ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::dest,           \
-                                  SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, errno) \
+#define PLOG(severity)                                                           \
+  LOGGING_PREAMBLE(severity) &&                                                  \
+      ::android::base::LogMessage(__FILE__, __LINE__, SEVERITY_LAMBDA(severity), \
+                                  _LOG_TAG_INTERNAL, errno)                      \
           .stream()
 
 // Marker that code is yet to be implemented.
@@ -272,24 +240,23 @@
 //
 //     CHECK(false == true) results in a log message of
 //       "Check failed: false == true".
-#define CHECK(x)                                                                 \
-  LIKELY((x)) || ABORT_AFTER_LOG_FATAL_EXPR(false) ||                            \
-      ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT,  \
-                                  ::android::base::FATAL, _LOG_TAG_INTERNAL, -1) \
-              .stream()                                                          \
+#define CHECK(x)                                                                                 \
+  LIKELY((x)) || ABORT_AFTER_LOG_FATAL_EXPR(false) ||                                            \
+      ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::FATAL, _LOG_TAG_INTERNAL, \
+                                  -1)                                                            \
+              .stream()                                                                          \
           << "Check failed: " #x << " "
 
 // clang-format off
 // Helper for CHECK_xx(x,y) macros.
-#define CHECK_OP(LHS, RHS, OP)                                                                 \
-  for (auto _values = ::android::base::MakeEagerEvaluator(LHS, RHS);                           \
-       UNLIKELY(!(_values.lhs OP _values.rhs));                                                \
-       /* empty */)                                                                            \
-  ABORT_AFTER_LOG_FATAL                                                                        \
-  ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT,                    \
-                              ::android::base::FATAL, _LOG_TAG_INTERNAL, -1)                   \
-          .stream()                                                                            \
-      << "Check failed: " << #LHS << " " << #OP << " " << #RHS << " (" #LHS "=" << _values.lhs \
+#define CHECK_OP(LHS, RHS, OP)                                                                   \
+  for (auto _values = ::android::base::MakeEagerEvaluator(LHS, RHS);                             \
+       UNLIKELY(!(_values.lhs OP _values.rhs));                                                  \
+       /* empty */)                                                                              \
+  ABORT_AFTER_LOG_FATAL                                                                          \
+  ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+          .stream()                                                                              \
+      << "Check failed: " << #LHS << " " << #OP << " " << #RHS << " (" #LHS "=" << _values.lhs   \
       << ", " #RHS "=" << _values.rhs << ") "
 // clang-format on
 
@@ -311,8 +278,8 @@
 #define CHECK_STROP(s1, s2, sense)                                             \
   while (UNLIKELY((strcmp(s1, s2) == 0) != (sense)))                           \
     ABORT_AFTER_LOG_FATAL                                                      \
-    ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT,  \
-                                ::android::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+    ::android::base::LogMessage(__FILE__, __LINE__,  ::android::base::FATAL,   \
+                                 _LOG_TAG_INTERNAL, -1)                        \
         .stream()                                                              \
         << "Check failed: " << "\"" << (s1) << "\""                            \
         << ((sense) ? " == " : " != ") << "\"" << (s2) << "\""
@@ -431,8 +398,10 @@
 // of a CHECK. The destructor will abort if the severity is FATAL.
 class LogMessage {
  public:
-  LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity, const char* tag,
+  // LogId has been deprecated, but this constructor must exist for prebuilts.
+  LogMessage(const char* file, unsigned int line, LogId, LogSeverity severity, const char* tag,
              int error);
+  LogMessage(const char* file, unsigned int line, LogSeverity severity, const char* tag, int error);
 
   ~LogMessage();
 
@@ -441,8 +410,8 @@
   std::ostream& stream();
 
   // The routine that performs the actual logging.
-  static void LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
-                      const char* tag, const char* msg);
+  static void LogLine(const char* file, unsigned int line, LogSeverity severity, const char* tag,
+                      const char* msg);
 
  private:
   const std::unique_ptr<LogMessageData> data_;
@@ -456,6 +425,9 @@
 // Set the minimum severity level for logging, returning the old severity.
 LogSeverity SetMinimumLogSeverity(LogSeverity new_severity);
 
+// Return whether or not a log message with the associated tag should be logged.
+bool ShouldLog(LogSeverity severity, const char* tag);
+
 // Allows to temporarily change the minimum severity level for logging.
 class ScopedLogSeverity {
  public:
@@ -469,14 +441,11 @@
 }  // namespace base
 }  // namespace android
 
-namespace std {
+namespace std {  // NOLINT(cert-dcl58-cpp)
 
 // Emit a warning of ostream<< with std::string*. The intention was most likely to print *string.
 //
 // Note: for this to work, we need to have this in a namespace.
-// Note: lots of ifdef magic to make this work with Clang (platform) vs GCC (windows tools)
-// Note: using diagnose_if(true) under Clang and nothing under GCC/mingw as there is no common
-//       attribute support.
 // Note: using a pragma because "-Wgcc-compat" (included in "-Weverything") complains about
 //       diagnose_if.
 // Note: to print the pointer, use "<< static_cast<const void*>(string_pointer)" instead.
@@ -486,8 +455,8 @@
 #pragma clang diagnostic ignored "-Wgcc-compat"
 #define OSTREAM_STRING_POINTER_USAGE_WARNING \
     __attribute__((diagnose_if(true, "Unexpected logging of string pointer", "warning")))
-inline std::ostream& operator<<(std::ostream& stream, const std::string* string_pointer)
-    OSTREAM_STRING_POINTER_USAGE_WARNING {
+inline OSTREAM_STRING_POINTER_USAGE_WARNING
+std::ostream& operator<<(std::ostream& stream, const std::string* string_pointer) {
   return stream << static_cast<const void*>(string_pointer);
 }
 #pragma clang diagnostic pop
diff --git a/base/include/android-base/mapped_file.h b/base/include/android-base/mapped_file.h
index 80513b1..8c37f43 100644
--- a/base/include/android-base/mapped_file.h
+++ b/base/include/android-base/mapped_file.h
@@ -16,26 +16,29 @@
 
 #pragma once
 
-#include "android-base/macros.h"
-#include "android-base/off64_t.h"
-
 #include <sys/types.h>
 
 #include <memory>
 
+#include "android-base/macros.h"
+#include "android-base/off64_t.h"
+#include "android-base/unique_fd.h"
+
 #if defined(_WIN32)
 #include <windows.h>
 #define PROT_READ 1
 #define PROT_WRITE 2
+using os_handle = HANDLE;
 #else
 #include <sys/mman.h>
+using os_handle = int;
 #endif
 
 namespace android {
 namespace base {
 
 /**
- * A region of a file mapped into memory.
+ * A region of a file mapped into memory (for grepping: also known as MmapFile or file mapping).
  */
 class MappedFile {
  public:
@@ -44,19 +47,34 @@
    * `offset` does not need to be page-aligned. If `PROT_WRITE` is set in `prot`, the mapping
    * will be writable, otherwise it will be read-only. Mappings are always `MAP_SHARED`.
    */
-  static std::unique_ptr<MappedFile> FromFd(int fd, off64_t offset, size_t length, int prot);
+  static std::unique_ptr<MappedFile> FromFd(borrowed_fd fd, off64_t offset, size_t length,
+                                            int prot);
+
+  /**
+   * Same thing, but using the raw OS file handle instead of a CRT wrapper.
+   */
+  static std::unique_ptr<MappedFile> FromOsHandle(os_handle h, off64_t offset, size_t length,
+                                                  int prot);
 
   /**
    * Removes the mapping.
    */
   ~MappedFile();
 
-  char* data() { return base_ + offset_; }
-  size_t size() { return size_; }
+  /**
+   * Not copyable but movable.
+   */
+  MappedFile(MappedFile&& other);
+  MappedFile& operator=(MappedFile&& other);
+
+  char* data() const { return base_ + offset_; }
+  size_t size() const { return size_; }
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(MappedFile);
 
+  void Close();
+
   char* base_;
   size_t size_;
 
diff --git a/base/include/android-base/no_destructor.h b/base/include/android-base/no_destructor.h
new file mode 100644
index 0000000..ce0dc9f
--- /dev/null
+++ b/base/include/android-base/no_destructor.h
@@ -0,0 +1,94 @@
+#pragma once
+
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utility>
+
+#include "android-base/macros.h"
+
+namespace android {
+namespace base {
+
+// A wrapper that makes it easy to create an object of type T with static
+// storage duration that:
+// - is only constructed on first access
+// - never invokes the destructor
+// in order to satisfy the styleguide ban on global constructors and
+// destructors.
+//
+// Runtime constant example:
+// const std::string& GetLineSeparator() {
+//  // Forwards to std::string(size_t, char, const Allocator&) constructor.
+//   static const base::NoDestructor<std::string> s(5, '-');
+//   return *s;
+// }
+//
+// More complex initialization with a lambda:
+// const std::string& GetSessionNonce() {
+//   static const base::NoDestructor<std::string> nonce([] {
+//     std::string s(16);
+//     crypto::RandString(s.data(), s.size());
+//     return s;
+//   }());
+//   return *nonce;
+// }
+//
+// NoDestructor<T> stores the object inline, so it also avoids a pointer
+// indirection and a malloc. Also note that since C++11 static local variable
+// initialization is thread-safe and so is this pattern. Code should prefer to
+// use NoDestructor<T> over:
+// - A function scoped static T* or T& that is dynamically initialized.
+// - A global base::LazyInstance<T>.
+//
+// Note that since the destructor is never run, this *will* leak memory if used
+// as a stack or member variable. Furthermore, a NoDestructor<T> should never
+// have global scope as that may require a static initializer.
+template <typename T>
+class NoDestructor {
+ public:
+  // Not constexpr; just write static constexpr T x = ...; if the value should
+  // be a constexpr.
+  template <typename... Args>
+  explicit NoDestructor(Args&&... args) {
+    new (storage_) T(std::forward<Args>(args)...);
+  }
+
+  // Allows copy and move construction of the contained type, to allow
+  // construction from an initializer list, e.g. for std::vector.
+  explicit NoDestructor(const T& x) { new (storage_) T(x); }
+  explicit NoDestructor(T&& x) { new (storage_) T(std::move(x)); }
+
+  NoDestructor(const NoDestructor&) = delete;
+  NoDestructor& operator=(const NoDestructor&) = delete;
+
+  ~NoDestructor() = default;
+
+  const T& operator*() const { return *get(); }
+  T& operator*() { return *get(); }
+
+  const T* operator->() const { return get(); }
+  T* operator->() { return get(); }
+
+  const T* get() const { return reinterpret_cast<const T*>(storage_); }
+  T* get() { return reinterpret_cast<T*>(storage_); }
+
+ private:
+  alignas(T) char storage_[sizeof(T)];
+};
+
+}  // namespace base
+}  // namespace android
diff --git a/base/include/android-base/parsebool.h b/base/include/android-base/parsebool.h
new file mode 100644
index 0000000..b2bd021
--- /dev/null
+++ b/base/include/android-base/parsebool.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string_view>
+
+namespace android {
+namespace base {
+
+// Parse the given string as yes or no inactivation of some sort. Return one of the
+// ParseBoolResult enumeration values.
+//
+// The following values parse as true:
+//
+//   1
+//   on
+//   true
+//   y
+//   yes
+//
+//
+// The following values parse as false:
+//
+//   0
+//   false
+//   n
+//   no
+//   off
+//
+// Anything else is a parse error.
+//
+// The purpose of this function is to have a single canonical parser for yes-or-no indications
+// throughout the system.
+
+enum class ParseBoolResult {
+  kError,
+  kFalse,
+  kTrue,
+};
+
+ParseBoolResult ParseBool(std::string_view s);
+
+}  // namespace base
+}  // namespace android
diff --git a/base/include/android-base/process.h b/base/include/android-base/process.h
new file mode 100644
index 0000000..69ed3fb
--- /dev/null
+++ b/base/include/android-base/process.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <dirent.h>
+#include <sys/types.h>
+
+#include <iterator>
+#include <memory>
+#include <vector>
+
+namespace android {
+namespace base {
+
+class AllPids {
+  class PidIterator {
+   public:
+    PidIterator(DIR* dir) : dir_(dir, closedir) { Increment(); }
+    PidIterator& operator++() {
+      Increment();
+      return *this;
+    }
+    bool operator==(const PidIterator& other) const { return pid_ == other.pid_; }
+    bool operator!=(const PidIterator& other) const { return !(*this == other); }
+    long operator*() const { return pid_; }
+    // iterator traits
+    using difference_type = pid_t;
+    using value_type = pid_t;
+    using pointer = const pid_t*;
+    using reference = const pid_t&;
+    using iterator_category = std::input_iterator_tag;
+
+   private:
+    void Increment();
+
+    pid_t pid_ = -1;
+    std::unique_ptr<DIR, decltype(&closedir)> dir_;
+  };
+
+ public:
+  PidIterator begin() { return opendir("/proc"); }
+  PidIterator end() { return nullptr; }
+};
+
+}  // namespace base
+}  // namespace android
diff --git a/base/include/android-base/properties.h b/base/include/android-base/properties.h
index 31e5273..49f1f31 100644
--- a/base/include/android-base/properties.h
+++ b/base/include/android-base/properties.h
@@ -20,8 +20,11 @@
 
 #include <chrono>
 #include <limits>
+#include <optional>
 #include <string>
 
+struct prop_info;
+
 namespace android {
 namespace base {
 
@@ -49,9 +52,6 @@
                                         T max = std::numeric_limits<T>::max());
 
 // Sets the system property `key` to `value`.
-// Note that system property setting is inherently asynchronous so a return value of `true`
-// isn't particularly meaningful, and immediately reading back the value won't necessarily
-// tell you whether or not your call succeeded. A `false` return value definitely means failure.
 bool SetProperty(const std::string& key, const std::string& value);
 
 // Waits for the system property `key` to have the value `expected_value`.
@@ -70,5 +70,32 @@
                                                          std::chrono::milliseconds::max());
 #endif
 
+#if defined(__BIONIC__) && __cplusplus >= 201703L
+// Cached system property lookup. For code that needs to read the same property multiple times,
+// this class helps optimize those lookups.
+class CachedProperty {
+ public:
+  explicit CachedProperty(const char* property_name);
+
+  // Returns the current value of the underlying system property as cheaply as possible.
+  // The returned pointer is valid until the next call to Get. Because most callers are going
+  // to want to parse the string returned here and cached that as well, this function performs
+  // no locking, and is completely thread unsafe. It is the caller's responsibility to provide a
+  // lock for thread-safety.
+  //
+  // Note: *changed can be set to true even if the contents of the property remain the same.
+  const char* Get(bool* changed = nullptr);
+
+ private:
+  std::string property_name_;
+  const prop_info* prop_info_;
+  std::optional<uint32_t> cached_area_serial_;
+  std::optional<uint32_t> cached_property_serial_;
+  char cached_value_[92];
+  bool is_read_only_;
+  const char* read_only_property_;
+};
+#endif
+
 } // namespace base
 } // namespace android
diff --git a/base/include/android-base/quick_exit.h b/base/include/android-base/quick_exit.h
deleted file mode 100644
index a03b14f..0000000
--- a/base/include/android-base/quick_exit.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <stdlib.h>
-
-// Provide emulation for at_quick_exit/quick_exit on platforms that don't have it.
-namespace android {
-namespace base {
-
-// Bionic and glibc have quick_exit, Darwin and Windows don't.
-#if !defined(__linux__)
-  void quick_exit(int exit_code) __attribute__((noreturn));
-  int at_quick_exit(void (*func)());
-#else
-  using ::at_quick_exit;
-  using ::quick_exit;
-#endif
-}
-}
diff --git a/base/include/android-base/result.h b/base/include/android-base/result.h
new file mode 100644
index 0000000..56a4f3e
--- /dev/null
+++ b/base/include/android-base/result.h
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// This file contains classes for returning a successful result along with an optional
+// arbitrarily typed return value or for returning a failure result along with an optional string
+// indicating why the function failed.
+
+// There are 3 classes that implement this functionality and one additional helper type.
+//
+// Result<T> either contains a member of type T that can be accessed using similar semantics as
+// std::optional<T> or it contains a ResultError describing an error, which can be accessed via
+// Result<T>::error().
+//
+// ResultError is a type that contains both a std::string describing the error and a copy of errno
+// from when the error occurred.  ResultError can be used in an ostream directly to print its
+// string value.
+//
+// Result<void> is the correct return type for a function that either returns successfully or
+// returns an error value.  Returning {} from a function that returns Result<void> is the
+// correct way to indicate that a function without a return type has completed successfully.
+//
+// A successful Result<T> is constructed implicitly from any type that can be implicitly converted
+// to T or from the constructor arguments for T.  This allows you to return a type T directly from
+// a function that returns Result<T>.
+//
+// Error and ErrnoError are used to construct a Result<T> that has failed.  The Error class takes
+// an ostream as an input and are implicitly cast to a Result<T> containing that failure.
+// ErrnoError() is a helper function to create an Error class that appends ": " + strerror(errno)
+// to the end of the failure string to aid in interacting with C APIs.  Alternatively, an errno
+// value can be directly specified via the Error() constructor.
+//
+// Errorf and ErrnoErrorf accept the format string syntax of the fmblib (https://fmt.dev).
+// Errorf("{} errors", num) is equivalent to Error() << num << " errors".
+//
+// ResultError can be used in the ostream and when using Error/Errorf to construct a Result<T>.
+// In this case, the string that the ResultError takes is passed through the stream normally, but
+// the errno is passed to the Result<T>. This can be used to pass errno from a failing C function up
+// multiple callers. Note that when the outer Result<T> is created with ErrnoError/ErrnoErrorf then
+// the errno from the inner ResultError is not passed. Also when multiple ResultError objects are
+// used, the errno of the last one is respected.
+//
+// ResultError can also directly construct a Result<T>.  This is particularly useful if you have a
+// function that return Result<T> but you have a Result<U> and want to return its error.  In this
+// case, you can return the .error() from the Result<U> to construct the Result<T>.
+
+// An example of how to use these is below:
+// Result<U> CalculateResult(const T& input) {
+//   U output;
+//   if (!SomeOtherCppFunction(input, &output)) {
+//     return Errorf("SomeOtherCppFunction {} failed", input);
+//   }
+//   if (!c_api_function(output)) {
+//     return ErrnoErrorf("c_api_function {} failed", output);
+//   }
+//   return output;
+// }
+//
+// auto output = CalculateResult(input);
+// if (!output) return Error() << "CalculateResult failed: " << output.error();
+// UseOutput(*output);
+
+#pragma once
+
+#include <errno.h>
+
+#include <sstream>
+#include <string>
+
+#include "android-base/expected.h"
+#include "android-base/format.h"
+
+namespace android {
+namespace base {
+
+struct ResultError {
+  template <typename T>
+  ResultError(T&& message, int code) : message_(std::forward<T>(message)), code_(code) {}
+
+  template <typename T>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  operator android::base::expected<T, ResultError>() {
+    return android::base::unexpected(ResultError(message_, code_));
+  }
+
+  std::string message() const { return message_; }
+  int code() const { return code_; }
+
+ private:
+  std::string message_;
+  int code_;
+};
+
+inline bool operator==(const ResultError& lhs, const ResultError& rhs) {
+  return lhs.message() == rhs.message() && lhs.code() == rhs.code();
+}
+
+inline bool operator!=(const ResultError& lhs, const ResultError& rhs) {
+  return !(lhs == rhs);
+}
+
+inline std::ostream& operator<<(std::ostream& os, const ResultError& t) {
+  os << t.message();
+  return os;
+}
+
+class Error {
+ public:
+  Error() : errno_(0), append_errno_(false) {}
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  Error(int errno_to_append) : errno_(errno_to_append), append_errno_(true) {}
+
+  template <typename T>
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  operator android::base::expected<T, ResultError>() {
+    return android::base::unexpected(ResultError(str(), errno_));
+  }
+
+  template <typename T>
+  Error& operator<<(T&& t) {
+    // NOLINTNEXTLINE(bugprone-suspicious-semicolon)
+    if constexpr (std::is_same_v<std::remove_cv_t<std::remove_reference_t<T>>, ResultError>) {
+      errno_ = t.code();
+      return (*this) << t.message();
+    }
+    int saved = errno;
+    ss_ << t;
+    errno = saved;
+    return *this;
+  }
+
+  const std::string str() const {
+    std::string str = ss_.str();
+    if (append_errno_) {
+      if (str.empty()) {
+        return strerror(errno_);
+      }
+      return std::move(str) + ": " + strerror(errno_);
+    }
+    return str;
+  }
+
+  Error(const Error&) = delete;
+  Error(Error&&) = delete;
+  Error& operator=(const Error&) = delete;
+  Error& operator=(Error&&) = delete;
+
+  template <typename T, typename... Args>
+  friend Error ErrorfImpl(const T&& fmt, const Args&... args);
+
+  template <typename T, typename... Args>
+  friend Error ErrnoErrorfImpl(const T&& fmt, const Args&... args);
+
+ private:
+  Error(bool append_errno, int errno_to_append, const std::string& message)
+      : errno_(errno_to_append), append_errno_(append_errno) {
+    (*this) << message;
+  }
+
+  std::stringstream ss_;
+  int errno_;
+  const bool append_errno_;
+};
+
+inline Error ErrnoError() {
+  return Error(errno);
+}
+
+inline int ErrorCode(int code) {
+  return code;
+}
+
+// Return the error code of the last ResultError object, if any.
+// Otherwise, return `code` as it is.
+template <typename T, typename... Args>
+inline int ErrorCode(int code, T&& t, const Args&... args) {
+  if constexpr (std::is_same_v<std::remove_cv_t<std::remove_reference_t<T>>, ResultError>) {
+    return ErrorCode(t.code(), args...);
+  }
+  return ErrorCode(code, args...);
+}
+
+template <typename T, typename... Args>
+inline Error ErrorfImpl(const T&& fmt, const Args&... args) {
+  return Error(false, ErrorCode(0, args...), fmt::format(fmt, args...));
+}
+
+template <typename T, typename... Args>
+inline Error ErrnoErrorfImpl(const T&& fmt, const Args&... args) {
+  return Error(true, errno, fmt::format(fmt, args...));
+}
+
+#define Errorf(fmt, ...) android::base::ErrorfImpl(FMT_STRING(fmt), ##__VA_ARGS__)
+#define ErrnoErrorf(fmt, ...) android::base::ErrnoErrorfImpl(FMT_STRING(fmt), ##__VA_ARGS__)
+
+template <typename T>
+using Result = android::base::expected<T, ResultError>;
+
+// Macros for testing the results of functions that return android::base::Result.
+// These also work with base::android::expected.
+
+#define CHECK_RESULT_OK(stmt)       \
+  do {                              \
+    const auto& tmp = (stmt);       \
+    CHECK(tmp.ok()) << tmp.error(); \
+  } while (0)
+
+#define ASSERT_RESULT_OK(stmt)            \
+  do {                                    \
+    const auto& tmp = (stmt);             \
+    ASSERT_TRUE(tmp.ok()) << tmp.error(); \
+  } while (0)
+
+#define EXPECT_RESULT_OK(stmt)            \
+  do {                                    \
+    auto tmp = (stmt);                    \
+    EXPECT_TRUE(tmp.ok()) << tmp.error(); \
+  } while (0)
+
+// TODO: Maybe add RETURN_IF_ERROR() and ASSIGN_OR_RETURN()
+
+}  // namespace base
+}  // namespace android
diff --git a/base/include/android-base/strings.h b/base/include/android-base/strings.h
index 8e9716f..14d534a 100644
--- a/base/include/android-base/strings.h
+++ b/base/include/android-base/strings.h
@@ -18,6 +18,7 @@
 
 #include <sstream>
 #include <string>
+#include <string_view>
 #include <vector>
 
 namespace android {
@@ -68,5 +69,26 @@
 // Tests whether 'lhs' equals 'rhs', ignoring case.
 bool EqualsIgnoreCase(std::string_view lhs, std::string_view rhs);
 
+// Removes `prefix` from the start of the given string and returns true (if
+// it was present), false otherwise.
+inline bool ConsumePrefix(std::string_view* s, std::string_view prefix) {
+  if (!StartsWith(*s, prefix)) return false;
+  s->remove_prefix(prefix.size());
+  return true;
+}
+
+// Removes `suffix` from the end of the given string and returns true (if
+// it was present), false otherwise.
+inline bool ConsumeSuffix(std::string_view* s, std::string_view suffix) {
+  if (!EndsWith(*s, suffix)) return false;
+  s->remove_suffix(suffix.size());
+  return true;
+}
+
+// Replaces `from` with `to` in `s`, once if `all == false`, or as many times as
+// there are matches if `all == true`.
+[[nodiscard]] std::string StringReplace(std::string_view s, std::string_view from,
+                                        std::string_view to, bool all);
+
 }  // namespace base
 }  // namespace android
diff --git a/base/include/android-base/test_utils.h b/base/include/android-base/test_utils.h
index b20f278..f3d7cb0 100644
--- a/base/include/android-base/test_utils.h
+++ b/base/include/android-base/test_utils.h
@@ -53,30 +53,34 @@
   CapturedStdout() : CapturedStdFd(STDOUT_FILENO) {}
 };
 
-#define ASSERT_MATCH(str, pattern)                                             \
-  do {                                                                         \
-    if (!std::regex_search((str), std::regex((pattern)))) {                    \
-      FAIL() << "regex mismatch: expected " << (pattern) << " in:\n" << (str); \
-    }                                                                          \
+#define ASSERT_MATCH(str, pattern)                                           \
+  do {                                                                       \
+    auto __s = (str);                                                        \
+    if (!std::regex_search(__s, std::regex((pattern)))) {                    \
+      FAIL() << "regex mismatch: expected " << (pattern) << " in:\n" << __s; \
+    }                                                                        \
   } while (0)
 
-#define ASSERT_NOT_MATCH(str, pattern)                                                     \
-  do {                                                                                     \
-    if (std::regex_search((str), std::regex((pattern)))) {                                 \
-      FAIL() << "regex mismatch: expected to not find " << (pattern) << " in:\n" << (str); \
-    }                                                                                      \
+#define ASSERT_NOT_MATCH(str, pattern)                                                   \
+  do {                                                                                   \
+    auto __s = (str);                                                                    \
+    if (std::regex_search(__s, std::regex((pattern)))) {                                 \
+      FAIL() << "regex mismatch: expected to not find " << (pattern) << " in:\n" << __s; \
+    }                                                                                    \
   } while (0)
 
-#define EXPECT_MATCH(str, pattern)                                                    \
-  do {                                                                                \
-    if (!std::regex_search((str), std::regex((pattern)))) {                           \
-      ADD_FAILURE() << "regex mismatch: expected " << (pattern) << " in:\n" << (str); \
-    }                                                                                 \
+#define EXPECT_MATCH(str, pattern)                                                  \
+  do {                                                                              \
+    auto __s = (str);                                                               \
+    if (!std::regex_search(__s, std::regex((pattern)))) {                           \
+      ADD_FAILURE() << "regex mismatch: expected " << (pattern) << " in:\n" << __s; \
+    }                                                                               \
   } while (0)
 
-#define EXPECT_NOT_MATCH(str, pattern)                                                            \
-  do {                                                                                            \
-    if (std::regex_search((str), std::regex((pattern)))) {                                        \
-      ADD_FAILURE() << "regex mismatch: expected to not find " << (pattern) << " in:\n" << (str); \
-    }                                                                                             \
+#define EXPECT_NOT_MATCH(str, pattern)                                                          \
+  do {                                                                                          \
+    auto __s = (str);                                                                           \
+    if (std::regex_search(__s, std::regex((pattern)))) {                                        \
+      ADD_FAILURE() << "regex mismatch: expected to not find " << (pattern) << " in:\n" << __s; \
+    }                                                                                           \
   } while (0)
diff --git a/base/include/android-base/unique_fd.h b/base/include/android-base/unique_fd.h
index 3fa3bea..c4a0aad 100644
--- a/base/include/android-base/unique_fd.h
+++ b/base/include/android-base/unique_fd.h
@@ -92,6 +92,8 @@
   explicit unique_fd_impl(int fd) { reset(fd); }
   ~unique_fd_impl() { reset(); }
 
+  unique_fd_impl(const unique_fd_impl&) = delete;
+  void operator=(const unique_fd_impl&) = delete;
   unique_fd_impl(unique_fd_impl&& other) noexcept { reset(other.release()); }
   unique_fd_impl& operator=(unique_fd_impl&& s) noexcept {
     int fd = s.fd_;
@@ -103,11 +105,25 @@
   void reset(int new_value = -1) { reset(new_value, nullptr); }
 
   int get() const { return fd_; }
+
+#if !defined(ANDROID_BASE_UNIQUE_FD_DISABLE_IMPLICIT_CONVERSION)
+  // unique_fd's operator int is dangerous, but we have way too much code that
+  // depends on it, so make this opt-in at first.
   operator int() const { return get(); }  // NOLINT
+#endif
+
+  bool operator>=(int rhs) const { return get() >= rhs; }
+  bool operator<(int rhs) const { return get() < rhs; }
+  bool operator==(int rhs) const { return get() == rhs; }
+  bool operator!=(int rhs) const { return get() != rhs; }
+  bool operator==(const unique_fd_impl& rhs) const { return get() == rhs.get(); }
+  bool operator!=(const unique_fd_impl& rhs) const { return get() != rhs.get(); }
 
   // Catch bogus error checks (i.e.: "!fd" instead of "fd != -1").
   bool operator!() const = delete;
 
+  bool ok() const { return get() >= 0; }
+
   int release() __attribute__((warn_unused_result)) {
     tag(fd_, this, nullptr);
     int ret = fd_;
@@ -157,9 +173,6 @@
   static auto close(int fd, void*) -> decltype(T::Close(fd), void()) {
     T::Close(fd);
   }
-
-  unique_fd_impl(const unique_fd_impl&);
-  void operator=(const unique_fd_impl&);
 };
 
 using unique_fd = unique_fd_impl<DefaultCloser>;
@@ -246,6 +259,22 @@
 
 #endif  // !defined(_WIN32)
 
+// A wrapper type that can be implicitly constructed from either int or unique_fd.
+struct borrowed_fd {
+  /* implicit */ borrowed_fd(int fd) : fd_(fd) {}  // NOLINT
+  template <typename T>
+  /* implicit */ borrowed_fd(const unique_fd_impl<T>& ufd) : fd_(ufd.get()) {}  // NOLINT
+
+  int get() const { return fd_; }
+
+  bool operator>=(int rhs) const { return get() >= rhs; }
+  bool operator<(int rhs) const { return get() < rhs; }
+  bool operator==(int rhs) const { return get() == rhs; }
+  bool operator!=(int rhs) const { return get() != rhs; }
+
+ private:
+  int fd_ = -1;
+};
 }  // namespace base
 }  // namespace android
 
diff --git a/base/liblog_symbols.cpp b/base/liblog_symbols.cpp
new file mode 100644
index 0000000..1f4b69b
--- /dev/null
+++ b/base/liblog_symbols.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "liblog_symbols.h"
+
+#if defined(__ANDROID_SDK_VERSION__) && (__ANDROID_SDK_VERSION__ <= 29)
+#define USE_DLSYM
+#endif
+
+#ifdef USE_DLSYM
+#include <dlfcn.h>
+#endif
+
+namespace android {
+namespace base {
+
+#ifdef USE_DLSYM
+
+const std::optional<LibLogFunctions>& GetLibLogFunctions() {
+  static std::optional<LibLogFunctions> liblog_functions = []() -> std::optional<LibLogFunctions> {
+    void* liblog_handle = dlopen("liblog.so", RTLD_NOW);
+    if (liblog_handle == nullptr) {
+      return {};
+    }
+
+    LibLogFunctions real_liblog_functions = {};
+
+#define DLSYM(name)                                                                   \
+  real_liblog_functions.name =                                                        \
+      reinterpret_cast<decltype(LibLogFunctions::name)>(dlsym(liblog_handle, #name)); \
+  if (real_liblog_functions.name == nullptr) {                                        \
+    return {};                                                                        \
+  }
+
+    DLSYM(__android_log_set_logger)
+    DLSYM(__android_log_write_log_message)
+    DLSYM(__android_log_logd_logger)
+    DLSYM(__android_log_stderr_logger)
+    DLSYM(__android_log_set_aborter)
+    DLSYM(__android_log_call_aborter)
+    DLSYM(__android_log_default_aborter)
+    DLSYM(__android_log_set_minimum_priority);
+    DLSYM(__android_log_get_minimum_priority);
+    DLSYM(__android_log_set_default_tag);
+#undef DLSYM
+
+    return real_liblog_functions;
+  }();
+
+  return liblog_functions;
+}
+
+#else
+
+const std::optional<LibLogFunctions>& GetLibLogFunctions() {
+  static std::optional<LibLogFunctions> liblog_functions = []() -> std::optional<LibLogFunctions> {
+    return LibLogFunctions{
+        .__android_log_set_logger = __android_log_set_logger,
+        .__android_log_write_log_message = __android_log_write_log_message,
+        .__android_log_logd_logger = __android_log_logd_logger,
+        .__android_log_stderr_logger = __android_log_stderr_logger,
+        .__android_log_set_aborter = __android_log_set_aborter,
+        .__android_log_call_aborter = __android_log_call_aborter,
+        .__android_log_default_aborter = __android_log_default_aborter,
+        .__android_log_set_minimum_priority = __android_log_set_minimum_priority,
+        .__android_log_get_minimum_priority = __android_log_get_minimum_priority,
+        .__android_log_set_default_tag = __android_log_set_default_tag,
+    };
+  }();
+  return liblog_functions;
+}
+
+#endif
+
+}  // namespace base
+}  // namespace android
diff --git a/base/liblog_symbols.h b/base/liblog_symbols.h
new file mode 100644
index 0000000..2e6b47f
--- /dev/null
+++ b/base/liblog_symbols.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <optional>
+
+#include <android/log.h>
+
+namespace android {
+namespace base {
+
+struct LibLogFunctions {
+  void (*__android_log_set_logger)(__android_logger_function logger);
+  void (*__android_log_write_log_message)(struct __android_log_message* log_message);
+
+  void (*__android_log_logd_logger)(const struct __android_log_message* log_message);
+  void (*__android_log_stderr_logger)(const struct __android_log_message* log_message);
+
+  void (*__android_log_set_aborter)(__android_aborter_function aborter);
+  void (*__android_log_call_aborter)(const char* abort_message);
+  void (*__android_log_default_aborter)(const char* abort_message);
+  int32_t (*__android_log_set_minimum_priority)(int32_t priority);
+  int32_t (*__android_log_get_minimum_priority)();
+  void (*__android_log_set_default_tag)(const char* tag);
+};
+
+const std::optional<LibLogFunctions>& GetLibLogFunctions();
+
+}  // namespace base
+}  // namespace android
diff --git a/base/logging.cpp b/base/logging.cpp
index f89168c..5bd21da 100644
--- a/base/logging.cpp
+++ b/base/logging.cpp
@@ -36,17 +36,18 @@
 #include <sys/uio.h>
 #endif
 
+#include <atomic>
 #include <iostream>
 #include <limits>
 #include <mutex>
+#include <optional>
 #include <sstream>
 #include <string>
 #include <utility>
 #include <vector>
 
-// Headers for LogMessage::LogLine.
-#ifdef __ANDROID__
 #include <android/log.h>
+#ifdef __ANDROID__
 #include <android/set_abort_message.h>
 #else
 #include <sys/types.h>
@@ -59,6 +60,9 @@
 #include <android-base/strings.h>
 #include <android-base/threads.h>
 
+#include "liblog_symbols.h"
+#include "logging_splitters.h"
+
 namespace android {
 namespace base {
 
@@ -115,9 +119,76 @@
 }
 #endif
 
-static std::mutex& LoggingLock() {
-  static auto& logging_lock = *new std::mutex();
-  return logging_lock;
+static LogId log_id_tToLogId(int32_t buffer_id) {
+  switch (buffer_id) {
+    case LOG_ID_MAIN:
+      return MAIN;
+    case LOG_ID_SYSTEM:
+      return SYSTEM;
+    case LOG_ID_RADIO:
+      return RADIO;
+    case LOG_ID_CRASH:
+      return CRASH;
+    case LOG_ID_DEFAULT:
+    default:
+      return DEFAULT;
+  }
+}
+
+static int32_t LogIdTolog_id_t(LogId log_id) {
+  switch (log_id) {
+    case MAIN:
+      return LOG_ID_MAIN;
+    case SYSTEM:
+      return LOG_ID_SYSTEM;
+    case RADIO:
+      return LOG_ID_RADIO;
+    case CRASH:
+      return LOG_ID_CRASH;
+    case DEFAULT:
+    default:
+      return LOG_ID_DEFAULT;
+  }
+}
+
+static LogSeverity PriorityToLogSeverity(int priority) {
+  switch (priority) {
+    case ANDROID_LOG_DEFAULT:
+      return INFO;
+    case ANDROID_LOG_VERBOSE:
+      return VERBOSE;
+    case ANDROID_LOG_DEBUG:
+      return DEBUG;
+    case ANDROID_LOG_INFO:
+      return INFO;
+    case ANDROID_LOG_WARN:
+      return WARNING;
+    case ANDROID_LOG_ERROR:
+      return ERROR;
+    case ANDROID_LOG_FATAL:
+      return FATAL;
+    default:
+      return FATAL;
+  }
+}
+
+static int32_t LogSeverityToPriority(LogSeverity severity) {
+  switch (severity) {
+    case VERBOSE:
+      return ANDROID_LOG_VERBOSE;
+    case DEBUG:
+      return ANDROID_LOG_DEBUG;
+    case INFO:
+      return ANDROID_LOG_INFO;
+    case WARNING:
+      return ANDROID_LOG_WARN;
+    case ERROR:
+      return ANDROID_LOG_ERROR;
+    case FATAL_WITHOUT_ABORT:
+    case FATAL:
+    default:
+      return ANDROID_LOG_FATAL;
+  }
 }
 
 static LogFunction& Logger() {
@@ -134,35 +205,38 @@
   return aborter;
 }
 
+// Only used for Q fallback.
 static std::recursive_mutex& TagLock() {
   static auto& tag_lock = *new std::recursive_mutex();
   return tag_lock;
 }
+// Only used for Q fallback.
 static std::string* gDefaultTag;
-std::string GetDefaultTag() {
-  std::lock_guard<std::recursive_mutex> lock(TagLock());
-  if (gDefaultTag == nullptr) {
-    return "";
-  }
-  return *gDefaultTag;
-}
+
 void SetDefaultTag(const std::string& tag) {
-  std::lock_guard<std::recursive_mutex> lock(TagLock());
-  if (gDefaultTag != nullptr) {
-    delete gDefaultTag;
-    gDefaultTag = nullptr;
-  }
-  if (!tag.empty()) {
-    gDefaultTag = new std::string(tag);
+  static auto& liblog_functions = GetLibLogFunctions();
+  if (liblog_functions) {
+    liblog_functions->__android_log_set_default_tag(tag.c_str());
+  } else {
+    std::lock_guard<std::recursive_mutex> lock(TagLock());
+    if (gDefaultTag != nullptr) {
+      delete gDefaultTag;
+      gDefaultTag = nullptr;
+    }
+    if (!tag.empty()) {
+      gDefaultTag = new std::string(tag);
+    }
   }
 }
 
 static bool gInitialized = false;
+
+// Only used for Q fallback.
 static LogSeverity gMinimumLogSeverity = INFO;
 
 #if defined(__linux__)
-void KernelLogger(android::base::LogId, android::base::LogSeverity severity,
-                  const char* tag, const char*, unsigned int, const char* msg) {
+static void KernelLogLine(const char* msg, int length, android::base::LogSeverity severity,
+                          const char* tag) {
   // clang-format off
   static constexpr int kLogSeverityToKernelLogLevel[] = {
       [android::base::VERBOSE] = 7,              // KERN_DEBUG (there is no verbose kernel log
@@ -186,8 +260,8 @@
   // The kernel's printk buffer is only 1024 bytes.
   // TODO: should we automatically break up long lines into multiple lines?
   // Or we could log but with something like "..." at the end?
-  char buf[1024];
-  size_t size = snprintf(buf, sizeof(buf), "<%d>%s: %s\n", level, tag, msg);
+  char buf[1024] __attribute__((__uninitialized__));
+  size_t size = snprintf(buf, sizeof(buf), "<%d>%s: %.*s\n", level, tag, length, msg);
   if (size > sizeof(buf)) {
     size = snprintf(buf, sizeof(buf), "<%d>%s: %zu-byte message too long for printk\n",
                     level, tag, size);
@@ -198,6 +272,11 @@
   iov[0].iov_len = size;
   TEMP_FAILURE_RETRY(writev(klog_fd, iov, 1));
 }
+
+void KernelLogger(android::base::LogId, android::base::LogSeverity severity, const char* tag,
+                  const char*, unsigned int, const char* full_message) {
+  SplitByLines(full_message, KernelLogLine, severity, tag);
+}
 #endif
 
 void StderrLogger(LogId, LogSeverity severity, const char* tag, const char* file, unsigned int line,
@@ -210,16 +289,10 @@
 #else
   localtime_r(&t, &now);
 #endif
+  auto output_string =
+      StderrOutputGenerator(now, getpid(), GetThreadId(), severity, tag, file, line, message);
 
-  char timestamp[32];
-  strftime(timestamp, sizeof(timestamp), "%m-%d %H:%M:%S", &now);
-
-  static const char log_characters[] = "VDIWEFF";
-  static_assert(arraysize(log_characters) - 1 == FATAL + 1,
-                "Mismatch in size of log_characters and values in LogSeverity");
-  char severity_char = log_characters[severity];
-  fprintf(stderr, "%s %c %s %5d %5" PRIu64 " %s:%u] %s\n", tag ? tag : "nullptr", severity_char,
-          timestamp, getpid(), GetThreadId(), file, line, message);
+  fputs(output_string.c_str(), stderr);
 }
 
 void StdioLogger(LogId, LogSeverity severity, const char* /*tag*/, const char* /*file*/,
@@ -241,42 +314,30 @@
   abort();
 }
 
+static void LogdLogChunk(LogId id, LogSeverity severity, const char* tag, const char* message) {
+  int32_t lg_id = LogIdTolog_id_t(id);
+  int32_t priority = LogSeverityToPriority(severity);
 
-#ifdef __ANDROID__
-LogdLogger::LogdLogger(LogId default_log_id) : default_log_id_(default_log_id) {
-}
-
-void LogdLogger::operator()(LogId id, LogSeverity severity, const char* tag,
-                            const char* file, unsigned int line,
-                            const char* message) {
-  static constexpr android_LogPriority kLogSeverityToAndroidLogPriority[] = {
-      ANDROID_LOG_VERBOSE, ANDROID_LOG_DEBUG, ANDROID_LOG_INFO,
-      ANDROID_LOG_WARN,    ANDROID_LOG_ERROR, ANDROID_LOG_FATAL,
-      ANDROID_LOG_FATAL,
-  };
-  static_assert(arraysize(kLogSeverityToAndroidLogPriority) == FATAL + 1,
-                "Mismatch in size of kLogSeverityToAndroidLogPriority and values in LogSeverity");
-
-  int priority = kLogSeverityToAndroidLogPriority[severity];
-  if (id == DEFAULT) {
-    id = default_log_id_;
-  }
-
-  static constexpr log_id kLogIdToAndroidLogId[] = {
-    LOG_ID_MAX, LOG_ID_MAIN, LOG_ID_SYSTEM,
-  };
-  static_assert(arraysize(kLogIdToAndroidLogId) == SYSTEM + 1,
-                "Mismatch in size of kLogIdToAndroidLogId and values in LogId");
-  log_id lg_id = kLogIdToAndroidLogId[id];
-
-  if (priority == ANDROID_LOG_FATAL) {
-    __android_log_buf_print(lg_id, priority, tag, "%s:%u] %s", file, line,
-                            message);
+  static auto& liblog_functions = GetLibLogFunctions();
+  if (liblog_functions) {
+    __android_log_message log_message = {sizeof(__android_log_message),     lg_id, priority, tag,
+                                         static_cast<const char*>(nullptr), 0,     message};
+    liblog_functions->__android_log_logd_logger(&log_message);
   } else {
     __android_log_buf_print(lg_id, priority, tag, "%s", message);
   }
 }
-#endif
+
+LogdLogger::LogdLogger(LogId default_log_id) : default_log_id_(default_log_id) {}
+
+void LogdLogger::operator()(LogId id, LogSeverity severity, const char* tag, const char* file,
+                            unsigned int line, const char* message) {
+  if (id == DEFAULT) {
+    id = default_log_id_;
+  }
+
+  SplitByLogdChunks(id, severity, tag, file, line, message, LogdLogChunk);
+}
 
 void InitLogging(char* argv[], LogFunction&& logger, AbortFunction&& aborter) {
   SetLogger(std::forward<LogFunction>(logger));
@@ -307,27 +368,27 @@
     if (spec.size() == 3 && StartsWith(spec, "*:")) {
       switch (spec[2]) {
         case 'v':
-          gMinimumLogSeverity = VERBOSE;
+          SetMinimumLogSeverity(VERBOSE);
           continue;
         case 'd':
-          gMinimumLogSeverity = DEBUG;
+          SetMinimumLogSeverity(DEBUG);
           continue;
         case 'i':
-          gMinimumLogSeverity = INFO;
+          SetMinimumLogSeverity(INFO);
           continue;
         case 'w':
-          gMinimumLogSeverity = WARNING;
+          SetMinimumLogSeverity(WARNING);
           continue;
         case 'e':
-          gMinimumLogSeverity = ERROR;
+          SetMinimumLogSeverity(ERROR);
           continue;
         case 'f':
-          gMinimumLogSeverity = FATAL_WITHOUT_ABORT;
+          SetMinimumLogSeverity(FATAL_WITHOUT_ABORT);
           continue;
         // liblog will even suppress FATAL if you say 's' for silent, but that's
         // crazy!
         case 's':
-          gMinimumLogSeverity = FATAL_WITHOUT_ABORT;
+          SetMinimumLogSeverity(FATAL_WITHOUT_ABORT);
           continue;
       }
     }
@@ -337,24 +398,38 @@
 }
 
 void SetLogger(LogFunction&& logger) {
-  std::lock_guard<std::mutex> lock(LoggingLock());
   Logger() = std::move(logger);
+
+  static auto& liblog_functions = GetLibLogFunctions();
+  if (liblog_functions) {
+    liblog_functions->__android_log_set_logger([](const struct __android_log_message* log_message) {
+      auto log_id = log_id_tToLogId(log_message->buffer_id);
+      auto severity = PriorityToLogSeverity(log_message->priority);
+
+      Logger()(log_id, severity, log_message->tag, log_message->file, log_message->line,
+               log_message->message);
+    });
+  }
 }
 
 void SetAborter(AbortFunction&& aborter) {
-  std::lock_guard<std::mutex> lock(LoggingLock());
   Aborter() = std::move(aborter);
+
+  static auto& liblog_functions = GetLibLogFunctions();
+  if (liblog_functions) {
+    liblog_functions->__android_log_set_aborter(
+        [](const char* abort_message) { Aborter()(abort_message); });
+  }
 }
 
 // This indirection greatly reduces the stack impact of having lots of
 // checks/logging in a function.
 class LogMessageData {
  public:
-  LogMessageData(const char* file, unsigned int line, LogId id, LogSeverity severity,
-                 const char* tag, int error)
+  LogMessageData(const char* file, unsigned int line, LogSeverity severity, const char* tag,
+                 int error)
       : file_(GetFileBasename(file)),
         line_number_(line),
-        id_(id),
         severity_(severity),
         tag_(tag),
         error_(error) {}
@@ -373,10 +448,6 @@
 
   const char* GetTag() const { return tag_; }
 
-  LogId GetId() const {
-    return id_;
-  }
-
   int GetError() const {
     return error_;
   }
@@ -393,7 +464,6 @@
   std::ostringstream buffer_;
   const char* const file_;
   const unsigned int line_number_;
-  const LogId id_;
   const LogSeverity severity_;
   const char* const tag_;
   const int error_;
@@ -401,9 +471,13 @@
   DISALLOW_COPY_AND_ASSIGN(LogMessageData);
 };
 
-LogMessage::LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity,
+LogMessage::LogMessage(const char* file, unsigned int line, LogId, LogSeverity severity,
                        const char* tag, int error)
-    : data_(new LogMessageData(file, line, id, severity, tag, error)) {}
+    : LogMessage(file, line, severity, tag, error) {}
+
+LogMessage::LogMessage(const char* file, unsigned int line, LogSeverity severity, const char* tag,
+                       int error)
+    : data_(new LogMessageData(file, line, severity, tag, error)) {}
 
 LogMessage::~LogMessage() {
   // Check severity again. This is duplicate work wrt/ LOG macros, but not LOG_STREAM.
@@ -425,30 +499,17 @@
 #endif
   }
 
-  {
-    // Do the actual logging with the lock held.
-    std::lock_guard<std::mutex> lock(LoggingLock());
-    if (msg.find('\n') == std::string::npos) {
-      LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(), data_->GetSeverity(),
-              data_->GetTag(), msg.c_str());
-    } else {
-      msg += '\n';
-      size_t i = 0;
-      while (i < msg.size()) {
-        size_t nl = msg.find('\n', i);
-        msg[nl] = '\0';
-        LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(), data_->GetSeverity(),
-                data_->GetTag(), &msg[i]);
-        // Undo the zero-termination so we can give the complete message to the aborter.
-        msg[nl] = '\n';
-        i = nl + 1;
-      }
-    }
-  }
+  LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetSeverity(), data_->GetTag(),
+          msg.c_str());
 
   // Abort if necessary.
   if (data_->GetSeverity() == FATAL) {
-    Aborter()(msg.c_str());
+    static auto& liblog_functions = GetLibLogFunctions();
+    if (liblog_functions) {
+      liblog_functions->__android_log_call_aborter(msg.c_str());
+    } else {
+      Aborter()(msg.c_str());
+    }
   }
 }
 
@@ -456,27 +517,60 @@
   return data_->GetBuffer();
 }
 
-void LogMessage::LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
-                         const char* tag, const char* message) {
-  if (tag == nullptr) {
-    std::lock_guard<std::recursive_mutex> lock(TagLock());
-    if (gDefaultTag == nullptr) {
-      gDefaultTag = new std::string(getprogname());
-    }
-    Logger()(id, severity, gDefaultTag->c_str(), file, line, message);
+void LogMessage::LogLine(const char* file, unsigned int line, LogSeverity severity, const char* tag,
+                         const char* message) {
+  static auto& liblog_functions = GetLibLogFunctions();
+  int32_t priority = LogSeverityToPriority(severity);
+  if (liblog_functions) {
+    __android_log_message log_message = {
+        sizeof(__android_log_message), LOG_ID_DEFAULT, priority, tag, file, line, message};
+    liblog_functions->__android_log_write_log_message(&log_message);
   } else {
-    Logger()(id, severity, tag, file, line, message);
+    if (tag == nullptr) {
+      std::lock_guard<std::recursive_mutex> lock(TagLock());
+      if (gDefaultTag == nullptr) {
+        gDefaultTag = new std::string(getprogname());
+      }
+
+      Logger()(DEFAULT, severity, gDefaultTag->c_str(), file, line, message);
+    } else {
+      Logger()(DEFAULT, severity, tag, file, line, message);
+    }
   }
 }
 
 LogSeverity GetMinimumLogSeverity() {
+  static auto& liblog_functions = GetLibLogFunctions();
+  if (liblog_functions) {
+    return PriorityToLogSeverity(liblog_functions->__android_log_get_minimum_priority());
+  } else {
     return gMinimumLogSeverity;
+  }
+}
+
+bool ShouldLog(LogSeverity severity, const char* tag) {
+  static auto& liblog_functions = GetLibLogFunctions();
+  // Even though we're not using the R liblog functions in this function, if we're running on Q,
+  // we need to fall back to using gMinimumLogSeverity, since __android_log_is_loggable() will not
+  // take into consideration the value from SetMinimumLogSeverity().
+  if (liblog_functions) {
+    int32_t priority = LogSeverityToPriority(severity);
+    return __android_log_is_loggable(priority, tag, ANDROID_LOG_INFO);
+  } else {
+    return severity >= gMinimumLogSeverity;
+  }
 }
 
 LogSeverity SetMinimumLogSeverity(LogSeverity new_severity) {
-  LogSeverity old_severity = gMinimumLogSeverity;
-  gMinimumLogSeverity = new_severity;
-  return old_severity;
+  static auto& liblog_functions = GetLibLogFunctions();
+  if (liblog_functions) {
+    int32_t priority = LogSeverityToPriority(new_severity);
+    return PriorityToLogSeverity(liblog_functions->__android_log_set_minimum_priority(priority));
+  } else {
+    LogSeverity old_severity = gMinimumLogSeverity;
+    gMinimumLogSeverity = new_severity;
+    return old_severity;
+  }
 }
 
 ScopedLogSeverity::ScopedLogSeverity(LogSeverity new_severity) {
diff --git a/base/logging_splitters.h b/base/logging_splitters.h
new file mode 100644
index 0000000..2ec2b20
--- /dev/null
+++ b/base/logging_splitters.h
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <inttypes.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+
+#define LOGGER_ENTRY_MAX_PAYLOAD 4068  // This constant is not in the NDK.
+
+namespace android {
+namespace base {
+
+// This splits the message up line by line, by calling log_function with a pointer to the start of
+// each line and the size up to the newline character.  It sends size = -1 for the final line.
+template <typename F, typename... Args>
+static void SplitByLines(const char* msg, const F& log_function, Args&&... args) {
+  const char* newline = strchr(msg, '\n');
+  while (newline != nullptr) {
+    log_function(msg, newline - msg, args...);
+    msg = newline + 1;
+    newline = strchr(msg, '\n');
+  }
+
+  log_function(msg, -1, args...);
+}
+
+// This splits the message up into chunks that logs can process delimited by new lines.  It calls
+// log_function with the exact null terminated message that should be sent to logd.
+// Note, despite the loops and snprintf's, if severity is not fatal and there are no new lines,
+// this function simply calls log_function with msg without any extra overhead.
+template <typename F>
+static void SplitByLogdChunks(LogId log_id, LogSeverity severity, const char* tag, const char* file,
+                              unsigned int line, const char* msg, const F& log_function) {
+  // The maximum size of a payload, after the log header that logd will accept is
+  // LOGGER_ENTRY_MAX_PAYLOAD, so subtract the other elements in the payload to find the size of
+  // the string that we can log in each pass.
+  // The protocol is documented in liblog/README.protocol.md.
+  // Specifically we subtract a byte for the priority, the length of the tag + its null terminator,
+  // and an additional byte for the null terminator on the payload.  We subtract an additional 32
+  // bytes for slack, similar to java/android/util/Log.java.
+  ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - strlen(tag) - 35;
+  if (max_size <= 0) {
+    abort();
+  }
+  // If we're logging a fatal message, we'll append the file and line numbers.
+  bool add_file = file != nullptr && (severity == FATAL || severity == FATAL_WITHOUT_ABORT);
+
+  std::string file_header;
+  if (add_file) {
+    file_header = StringPrintf("%s:%u] ", file, line);
+  }
+  int file_header_size = file_header.size();
+
+  __attribute__((uninitialized)) char logd_chunk[max_size + 1];
+  ptrdiff_t chunk_position = 0;
+
+  auto call_log_function = [&]() {
+    log_function(log_id, severity, tag, logd_chunk);
+    chunk_position = 0;
+  };
+
+  auto write_to_logd_chunk = [&](const char* message, int length) {
+    int size_written = 0;
+    const char* new_line = chunk_position > 0 ? "\n" : "";
+    if (add_file) {
+      size_written = snprintf(logd_chunk + chunk_position, sizeof(logd_chunk) - chunk_position,
+                              "%s%s%.*s", new_line, file_header.c_str(), length, message);
+    } else {
+      size_written = snprintf(logd_chunk + chunk_position, sizeof(logd_chunk) - chunk_position,
+                              "%s%.*s", new_line, length, message);
+    }
+
+    // This should never fail, if it does and we set size_written to 0, which will skip this line
+    // and move to the next one.
+    if (size_written < 0) {
+      size_written = 0;
+    }
+    chunk_position += size_written;
+  };
+
+  const char* newline = strchr(msg, '\n');
+  while (newline != nullptr) {
+    // If we have data in the buffer and this next line doesn't fit, write the buffer.
+    if (chunk_position != 0 && chunk_position + (newline - msg) + 1 + file_header_size > max_size) {
+      call_log_function();
+    }
+
+    // Otherwise, either the next line fits or we have any empty buffer and too large of a line to
+    // ever fit, in both cases, we add it to the buffer and continue.
+    write_to_logd_chunk(msg, newline - msg);
+
+    msg = newline + 1;
+    newline = strchr(msg, '\n');
+  }
+
+  // If we have left over data in the buffer and we can fit the rest of msg, add it to the buffer
+  // then write the buffer.
+  if (chunk_position != 0 &&
+      chunk_position + static_cast<int>(strlen(msg)) + 1 + file_header_size <= max_size) {
+    write_to_logd_chunk(msg, -1);
+    call_log_function();
+  } else {
+    // If the buffer is not empty and we can't fit the rest of msg into it, write its contents.
+    if (chunk_position != 0) {
+      call_log_function();
+    }
+    // Then write the rest of the msg.
+    if (add_file) {
+      snprintf(logd_chunk, sizeof(logd_chunk), "%s%s", file_header.c_str(), msg);
+      log_function(log_id, severity, tag, logd_chunk);
+    } else {
+      log_function(log_id, severity, tag, msg);
+    }
+  }
+}
+
+static std::pair<int, int> CountSizeAndNewLines(const char* message) {
+  int size = 0;
+  int new_lines = 0;
+  while (*message != '\0') {
+    size++;
+    if (*message == '\n') {
+      ++new_lines;
+    }
+    ++message;
+  }
+  return {size, new_lines};
+}
+
+// This adds the log header to each line of message and returns it as a string intended to be
+// written to stderr.
+static std::string StderrOutputGenerator(const struct tm& now, int pid, uint64_t tid,
+                                         LogSeverity severity, const char* tag, const char* file,
+                                         unsigned int line, const char* message) {
+  char timestamp[32];
+  strftime(timestamp, sizeof(timestamp), "%m-%d %H:%M:%S", &now);
+
+  static const char log_characters[] = "VDIWEFF";
+  static_assert(arraysize(log_characters) - 1 == FATAL + 1,
+                "Mismatch in size of log_characters and values in LogSeverity");
+  char severity_char = log_characters[severity];
+  std::string line_prefix;
+  if (file != nullptr) {
+    line_prefix = StringPrintf("%s %c %s %5d %5" PRIu64 " %s:%u] ", tag ? tag : "nullptr",
+                               severity_char, timestamp, pid, tid, file, line);
+  } else {
+    line_prefix = StringPrintf("%s %c %s %5d %5" PRIu64 " ", tag ? tag : "nullptr", severity_char,
+                               timestamp, pid, tid);
+  }
+
+  auto [size, new_lines] = CountSizeAndNewLines(message);
+  std::string output_string;
+  output_string.reserve(size + new_lines * line_prefix.size() + 1);
+
+  auto concat_lines = [&](const char* message, int size) {
+    output_string.append(line_prefix);
+    if (size == -1) {
+      output_string.append(message);
+    } else {
+      output_string.append(message, size);
+    }
+    output_string.append("\n");
+  };
+  SplitByLines(message, concat_lines);
+  return output_string;
+}
+
+}  // namespace base
+}  // namespace android
diff --git a/base/logging_splitters_test.cpp b/base/logging_splitters_test.cpp
new file mode 100644
index 0000000..679d19e
--- /dev/null
+++ b/base/logging_splitters_test.cpp
@@ -0,0 +1,325 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "logging_splitters.h"
+
+#include <string>
+#include <vector>
+
+#include <android-base/strings.h>
+#include <gtest/gtest.h>
+
+namespace android {
+namespace base {
+
+void TestNewlineSplitter(const std::string& input,
+                         const std::vector<std::string>& expected_output) {
+  std::vector<std::string> output;
+  auto logger_function = [&](const char* msg, int length) {
+    if (length == -1) {
+      output.push_back(msg);
+    } else {
+      output.push_back(std::string(msg, length));
+    }
+  };
+  SplitByLines(input.c_str(), logger_function);
+
+  EXPECT_EQ(expected_output, output);
+}
+
+TEST(logging_splitters, NewlineSplitter_EmptyString) {
+  TestNewlineSplitter("", std::vector<std::string>{""});
+}
+
+TEST(logging_splitters, NewlineSplitter_BasicString) {
+  TestNewlineSplitter("normal string", std::vector<std::string>{"normal string"});
+}
+
+TEST(logging_splitters, NewlineSplitter_ormalBasicStringTrailingNewline) {
+  TestNewlineSplitter("normal string\n", std::vector<std::string>{"normal string", ""});
+}
+
+TEST(logging_splitters, NewlineSplitter_MultilineTrailing) {
+  TestNewlineSplitter("normal string\nsecond string\nthirdstring",
+                      std::vector<std::string>{"normal string", "second string", "thirdstring"});
+}
+
+TEST(logging_splitters, NewlineSplitter_MultilineTrailingNewline) {
+  TestNewlineSplitter(
+      "normal string\nsecond string\nthirdstring\n",
+      std::vector<std::string>{"normal string", "second string", "thirdstring", ""});
+}
+
+TEST(logging_splitters, NewlineSplitter_MultilineEmbeddedNewlines) {
+  TestNewlineSplitter(
+      "normal string\n\n\nsecond string\n\nthirdstring\n",
+      std::vector<std::string>{"normal string", "", "", "second string", "", "thirdstring", ""});
+}
+
+void TestLogdChunkSplitter(const std::string& tag, const std::string& file,
+                           const std::string& input,
+                           const std::vector<std::string>& expected_output) {
+  std::vector<std::string> output;
+  auto logger_function = [&](LogId, LogSeverity, const char*, const char* msg) {
+    output.push_back(msg);
+  };
+
+  SplitByLogdChunks(MAIN, FATAL, tag.c_str(), file.empty() ? nullptr : file.c_str(), 1000,
+                    input.c_str(), logger_function);
+
+  auto return_lengths = [&] {
+    std::string sizes;
+    sizes += "expected_output sizes:";
+    for (const auto& string : expected_output) {
+      sizes += " " + std::to_string(string.size());
+    }
+    sizes += "\noutput sizes:";
+    for (const auto& string : output) {
+      sizes += " " + std::to_string(string.size());
+    }
+    return sizes;
+  };
+
+  EXPECT_EQ(expected_output, output) << return_lengths();
+}
+
+TEST(logging_splitters, LogdChunkSplitter_EmptyString) {
+  TestLogdChunkSplitter("tag", "", "", std::vector<std::string>{""});
+}
+
+TEST(logging_splitters, LogdChunkSplitter_BasicString) {
+  TestLogdChunkSplitter("tag", "", "normal string", std::vector<std::string>{"normal string"});
+}
+
+TEST(logging_splitters, LogdChunkSplitter_NormalBasicStringTrailingNewline) {
+  TestLogdChunkSplitter("tag", "", "normal string\n", std::vector<std::string>{"normal string\n"});
+}
+
+TEST(logging_splitters, LogdChunkSplitter_MultilineTrailing) {
+  TestLogdChunkSplitter("tag", "", "normal string\nsecond string\nthirdstring",
+                        std::vector<std::string>{"normal string\nsecond string\nthirdstring"});
+}
+
+TEST(logging_splitters, LogdChunkSplitter_MultilineTrailingNewline) {
+  TestLogdChunkSplitter("tag", "", "normal string\nsecond string\nthirdstring\n",
+                        std::vector<std::string>{"normal string\nsecond string\nthirdstring\n"});
+}
+
+TEST(logging_splitters, LogdChunkSplitter_MultilineEmbeddedNewlines) {
+  TestLogdChunkSplitter(
+      "tag", "", "normal string\n\n\nsecond string\n\nthirdstring\n",
+      std::vector<std::string>{"normal string\n\n\nsecond string\n\nthirdstring\n"});
+}
+
+// This test should return the same string, the logd logger itself will truncate down to size.
+// This has historically been the behavior both in libbase and liblog.
+TEST(logging_splitters, LogdChunkSplitter_HugeLineNoNewline) {
+  auto long_string = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'x');
+  ASSERT_EQ(LOGGER_ENTRY_MAX_PAYLOAD, static_cast<int>(long_string.size()));
+
+  TestLogdChunkSplitter("tag", "", long_string, std::vector{long_string});
+}
+
+std::string ReduceToMaxSize(const std::string& tag, const std::string& string) {
+  return string.substr(0, LOGGER_ENTRY_MAX_PAYLOAD - tag.size() - 35);
+}
+
+TEST(logging_splitters, LogdChunkSplitter_MultipleHugeLineNoNewline) {
+  auto long_string_x = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'x');
+  auto long_string_y = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'y');
+  auto long_string_z = std::string(LOGGER_ENTRY_MAX_PAYLOAD, 'z');
+
+  auto long_strings = long_string_x + '\n' + long_string_y + '\n' + long_string_z;
+
+  std::string tag = "tag";
+  std::vector expected = {ReduceToMaxSize(tag, long_string_x), ReduceToMaxSize(tag, long_string_y),
+                          long_string_z};
+
+  TestLogdChunkSplitter(tag, "", long_strings, expected);
+}
+
+// With a ~4k buffer, we should print 2 long strings per logger call.
+TEST(logging_splitters, LogdChunkSplitter_Multiple2kLines) {
+  std::vector expected = {
+      std::string(2000, 'a') + '\n' + std::string(2000, 'b'),
+      std::string(2000, 'c') + '\n' + std::string(2000, 'd'),
+      std::string(2000, 'e') + '\n' + std::string(2000, 'f'),
+  };
+
+  auto long_strings = Join(expected, '\n');
+
+  TestLogdChunkSplitter("tag", "", long_strings, expected);
+}
+
+TEST(logging_splitters, LogdChunkSplitter_ExactSizedLines) {
+  const char* tag = "tag";
+  ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - strlen(tag) - 35;
+  auto long_string_a = std::string(max_size, 'a');
+  auto long_string_b = std::string(max_size, 'b');
+  auto long_string_c = std::string(max_size, 'c');
+
+  auto long_strings = long_string_a + '\n' + long_string_b + '\n' + long_string_c;
+
+  TestLogdChunkSplitter(tag, "", long_strings,
+                        std::vector{long_string_a, long_string_b, long_string_c});
+}
+
+TEST(logging_splitters, LogdChunkSplitter_UnderEqualOver) {
+  std::string tag = "tag";
+  ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - tag.size() - 35;
+
+  auto first_string_size = 1000;
+  auto first_string = std::string(first_string_size, 'a');
+  auto second_string_size = max_size - first_string_size - 1;
+  auto second_string = std::string(second_string_size, 'b');
+
+  auto exact_string = std::string(max_size, 'c');
+
+  auto large_string = std::string(max_size + 50, 'd');
+
+  auto final_string = std::string("final string!\n\nfinal \n \n final \n");
+
+  std::vector expected = {first_string + '\n' + second_string, exact_string,
+                          ReduceToMaxSize(tag, large_string), final_string};
+
+  std::vector input_strings = {first_string + '\n' + second_string, exact_string, large_string,
+                               final_string};
+  auto long_strings = Join(input_strings, '\n');
+
+  TestLogdChunkSplitter(tag, "", long_strings, expected);
+}
+
+TEST(logging_splitters, LogdChunkSplitter_WithFile) {
+  std::string tag = "tag";
+  std::string file = "/path/to/myfile.cpp";
+  int line = 1000;
+  auto file_header = StringPrintf("%s:%d] ", file.c_str(), line);
+  ptrdiff_t max_size = LOGGER_ENTRY_MAX_PAYLOAD - tag.size() - 35;
+
+  auto first_string_size = 1000;
+  auto first_string = std::string(first_string_size, 'a');
+  auto second_string_size = max_size - first_string_size - 1 - 2 * file_header.size();
+  auto second_string = std::string(second_string_size, 'b');
+
+  auto exact_string = std::string(max_size - file_header.size(), 'c');
+
+  auto large_string = std::string(max_size + 50, 'd');
+
+  auto final_string = std::string("final string!");
+
+  std::vector expected = {
+      file_header + first_string + '\n' + file_header + second_string, file_header + exact_string,
+      file_header + ReduceToMaxSize(file_header + tag, large_string), file_header + final_string};
+
+  std::vector input_strings = {first_string + '\n' + second_string, exact_string, large_string,
+                               final_string};
+  auto long_strings = Join(input_strings, '\n');
+
+  TestLogdChunkSplitter(tag, file, long_strings, expected);
+}
+
+// We set max_size based off of tag, so if it's too large, the buffer will be sized wrong.
+// We could recover from this, but it's certainly an error for someone to attempt to use a tag this
+// large, so we abort instead.
+TEST(logging_splitters, LogdChunkSplitter_TooLongTag) {
+  auto long_tag = std::string(5000, 'x');
+  auto logger_function = [](LogId, LogSeverity, const char*, const char*) {};
+  ASSERT_DEATH(
+      SplitByLogdChunks(MAIN, ERROR, long_tag.c_str(), nullptr, 0, "message", logger_function), "");
+}
+
+// We do handle excessively large file names correctly however.
+TEST(logging_splitters, LogdChunkSplitter_TooLongFile) {
+  auto long_file = std::string(5000, 'x');
+  std::string tag = "tag";
+
+  std::vector expected = {ReduceToMaxSize(tag, long_file), ReduceToMaxSize(tag, long_file)};
+
+  TestLogdChunkSplitter(tag, long_file, "can't see me\nor me", expected);
+}
+
+void TestStderrOutputGenerator(const char* tag, const char* file, int line, const char* message,
+                               const std::string& expected) {
+  // All log messages will show "01-01 00:00:00"
+  struct tm now = {
+      .tm_sec = 0,
+      .tm_min = 0,
+      .tm_hour = 0,
+      .tm_mday = 1,
+      .tm_mon = 0,
+      .tm_year = 1970,
+  };
+
+  int pid = 1234;       // All log messages will have 1234 for their PID.
+  uint64_t tid = 4321;  // All log messages will have 4321 for their TID.
+
+  auto result = StderrOutputGenerator(now, pid, tid, ERROR, tag, file, line, message);
+  EXPECT_EQ(expected, result);
+}
+
+TEST(logging_splitters, StderrOutputGenerator_Basic) {
+  TestStderrOutputGenerator(nullptr, nullptr, 0, "simple message",
+                            "nullptr E 01-01 00:00:00  1234  4321 simple message\n");
+  TestStderrOutputGenerator("tag", nullptr, 0, "simple message",
+                            "tag E 01-01 00:00:00  1234  4321 simple message\n");
+  TestStderrOutputGenerator(
+      "tag", "/path/to/some/file", 0, "simple message",
+      "tag E 01-01 00:00:00  1234  4321 /path/to/some/file:0] simple message\n");
+}
+
+TEST(logging_splitters, StderrOutputGenerator_NewlineTagAndFile) {
+  TestStderrOutputGenerator("tag\n\n", nullptr, 0, "simple message",
+                            "tag\n\n E 01-01 00:00:00  1234  4321 simple message\n");
+  TestStderrOutputGenerator(
+      "tag", "/path/to/some/file\n\n", 0, "simple message",
+      "tag E 01-01 00:00:00  1234  4321 /path/to/some/file\n\n:0] simple message\n");
+}
+
+TEST(logging_splitters, StderrOutputGenerator_TrailingNewLine) {
+  TestStderrOutputGenerator(
+      "tag", nullptr, 0, "simple message\n",
+      "tag E 01-01 00:00:00  1234  4321 simple message\ntag E 01-01 00:00:00  1234  4321 \n");
+}
+
+TEST(logging_splitters, StderrOutputGenerator_MultiLine) {
+  const char* expected_result =
+      "tag E 01-01 00:00:00  1234  4321 simple message\n"
+      "tag E 01-01 00:00:00  1234  4321 \n"
+      "tag E 01-01 00:00:00  1234  4321 \n"
+      "tag E 01-01 00:00:00  1234  4321 another message \n"
+      "tag E 01-01 00:00:00  1234  4321 \n"
+      "tag E 01-01 00:00:00  1234  4321  final message \n"
+      "tag E 01-01 00:00:00  1234  4321 \n"
+      "tag E 01-01 00:00:00  1234  4321 \n"
+      "tag E 01-01 00:00:00  1234  4321 \n";
+
+  TestStderrOutputGenerator("tag", nullptr, 0,
+                            "simple message\n\n\nanother message \n\n final message \n\n\n",
+                            expected_result);
+}
+
+TEST(logging_splitters, StderrOutputGenerator_MultiLineLong) {
+  auto long_string_a = std::string(4000, 'a');
+  auto long_string_b = std::string(4000, 'b');
+
+  auto message = long_string_a + '\n' + long_string_b;
+  auto expected_result = "tag E 01-01 00:00:00  1234  4321 " + long_string_a + '\n' +
+                         "tag E 01-01 00:00:00  1234  4321 " + long_string_b + '\n';
+  TestStderrOutputGenerator("tag", nullptr, 0, message.c_str(), expected_result);
+}
+
+}  // namespace base
+}  // namespace android
diff --git a/base/logging_test.cpp b/base/logging_test.cpp
index 3113fb4..593e2c1 100644
--- a/base/logging_test.cpp
+++ b/base/logging_test.cpp
@@ -24,8 +24,10 @@
 
 #include <regex>
 #include <string>
+#include <thread>
 
 #include "android-base/file.h"
+#include "android-base/scopeguard.h"
 #include "android-base/stringprintf.h"
 #include "android-base/test_utils.h"
 
@@ -140,10 +142,6 @@
   CHECK_WOULD_LOG_ENABLED(FATAL);
 }
 
-TEST(logging, WOULD_LOG_FATAL_WITHOUT_ABORT_disabled) {
-  CHECK_WOULD_LOG_DISABLED(FATAL_WITHOUT_ABORT);
-}
-
 TEST(logging, WOULD_LOG_FATAL_WITHOUT_ABORT_enabled) {
   CHECK_WOULD_LOG_ENABLED(FATAL_WITHOUT_ABORT);
 }
@@ -266,10 +264,6 @@
     CheckMessage(cap2, android::base::severity, "foobar"); \
   } \
 
-TEST(logging, LOG_STREAM_FATAL_WITHOUT_ABORT_disabled) {
-  CHECK_LOG_STREAM_DISABLED(FATAL_WITHOUT_ABORT);
-}
-
 TEST(logging, LOG_STREAM_FATAL_WITHOUT_ABORT_enabled) {
   ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(FATAL_WITHOUT_ABORT));
 }
@@ -352,10 +346,6 @@
   ASSERT_DEATH({SuppressAbortUI(); LOG(::android::base::FATAL) << "foobar";}, "foobar");
 }
 
-TEST(logging, LOG_FATAL_WITHOUT_ABORT_disabled) {
-  CHECK_LOG_DISABLED(FATAL_WITHOUT_ABORT);
-}
-
 TEST(logging, LOG_FATAL_WITHOUT_ABORT_enabled) {
   ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(FATAL_WITHOUT_ABORT));
 }
@@ -508,10 +498,6 @@
   ASSERT_DEATH({SuppressAbortUI(); PLOG(::android::base::FATAL) << "foobar";}, "foobar");
 }
 
-TEST(logging, PLOG_FATAL_WITHOUT_ABORT_disabled) {
-  CHECK_PLOG_DISABLED(FATAL_WITHOUT_ABORT);
-}
-
 TEST(logging, PLOG_FATAL_WITHOUT_ABORT_enabled) {
   ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(FATAL_WITHOUT_ABORT));
 }
@@ -612,28 +598,13 @@
   CapturedStderr cap;
   LOG(FATAL) << "foo\nbar";
 
-  EXPECT_EQ(CountLineAborter::newline_count, 1U + 1U);  // +1 for final '\n'.
+  EXPECT_EQ(CountLineAborter::newline_count, 1U);
 }
 
 __attribute__((constructor)) void TestLoggingInConstructor() {
   LOG(ERROR) << "foobar";
 }
 
-TEST(logging, SetDefaultTag) {
-  constexpr const char* expected_tag = "test_tag";
-  constexpr const char* expected_msg = "foobar";
-  CapturedStderr cap;
-  {
-    std::string old_default_tag = android::base::GetDefaultTag();
-    android::base::SetDefaultTag(expected_tag);
-    android::base::ScopedLogSeverity sls(android::base::LogSeverity::INFO);
-    LOG(INFO) << expected_msg;
-    android::base::SetDefaultTag(old_default_tag);
-  }
-  ASSERT_NO_FATAL_FAILURE(
-      CheckMessage(cap, android::base::LogSeverity::INFO, expected_msg, expected_tag));
-}
-
 TEST(logging, StdioLogger) {
   CapturedStderr cap_err;
   CapturedStdout cap_out;
@@ -648,3 +619,55 @@
   // Whereas ERROR logging includes the program name.
   ASSERT_EQ(android::base::Basename(android::base::GetExecutablePath()) + ": err\n", cap_err.str());
 }
+
+TEST(logging, ForkSafe) {
+#if !defined(_WIN32)
+  using namespace android::base;
+  SetLogger(
+      [&](LogId, LogSeverity, const char*, const char*, unsigned int, const char*) { sleep(3); });
+
+  auto guard = make_scope_guard([&] {
+#ifdef __ANDROID__
+    SetLogger(LogdLogger());
+#else
+    SetLogger(StderrLogger);
+#endif
+  });
+
+  auto thread = std::thread([] {
+    LOG(ERROR) << "This should sleep for 3 seconds, long enough to fork another process, if there "
+                  "is no intervention";
+  });
+  thread.detach();
+
+  auto pid = fork();
+  ASSERT_NE(-1, pid);
+
+  if (pid == 0) {
+    // Reset the logger, so the next message doesn't sleep().
+    SetLogger([](LogId, LogSeverity, const char*, const char*, unsigned int, const char*) {});
+    LOG(ERROR) << "This should succeed in the child, only if libbase is forksafe.";
+    _exit(EXIT_SUCCESS);
+  }
+
+  // Wait for up to 3 seconds for the child to exit.
+  int tries = 3;
+  bool found_child = false;
+  while (tries-- > 0) {
+    auto result = waitpid(pid, nullptr, WNOHANG);
+    EXPECT_NE(-1, result);
+    if (result == pid) {
+      found_child = true;
+      break;
+    }
+    sleep(1);
+  }
+
+  EXPECT_TRUE(found_child);
+
+  // Kill the child if it did not exit.
+  if (!found_child) {
+    kill(pid, SIGKILL);
+  }
+#endif
+}
diff --git a/base/mapped_file.cpp b/base/mapped_file.cpp
index d26e8ba..fff3453 100644
--- a/base/mapped_file.cpp
+++ b/base/mapped_file.cpp
@@ -16,11 +16,15 @@
 
 #include "android-base/mapped_file.h"
 
+#include <utility>
+
 #include <errno.h>
 
 namespace android {
 namespace base {
 
+static constexpr char kEmptyBuffer[] = {'0'};
+
 static off64_t InitPageSize() {
 #if defined(_WIN32)
   SYSTEM_INFO si;
@@ -31,21 +35,31 @@
 #endif
 }
 
-std::unique_ptr<MappedFile> MappedFile::FromFd(int fd, off64_t offset, size_t length, int prot) {
-  static off64_t page_size = InitPageSize();
+std::unique_ptr<MappedFile> MappedFile::FromFd(borrowed_fd fd, off64_t offset, size_t length,
+                                               int prot) {
+#if defined(_WIN32)
+  return FromOsHandle(reinterpret_cast<HANDLE>(_get_osfhandle(fd.get())), offset, length, prot);
+#else
+  return FromOsHandle(fd.get(), offset, length, prot);
+#endif
+}
+
+std::unique_ptr<MappedFile> MappedFile::FromOsHandle(os_handle h, off64_t offset, size_t length,
+                                                     int prot) {
+  static const off64_t page_size = InitPageSize();
   size_t slop = offset % page_size;
   off64_t file_offset = offset - slop;
   off64_t file_length = length + slop;
 
 #if defined(_WIN32)
-  HANDLE handle =
-      CreateFileMapping(reinterpret_cast<HANDLE>(_get_osfhandle(fd)), nullptr,
-                        (prot & PROT_WRITE) ? PAGE_READWRITE : PAGE_READONLY, 0, 0, nullptr);
+  HANDLE handle = CreateFileMappingW(
+      h, nullptr, (prot & PROT_WRITE) ? PAGE_READWRITE : PAGE_READONLY, 0, 0, nullptr);
   if (handle == nullptr) {
     // http://b/119818070 "app crashes when reading asset of zero length".
     // Return a MappedFile that's only valid for reading the size.
-    if (length == 0) {
-      return std::unique_ptr<MappedFile>(new MappedFile{nullptr, 0, 0, nullptr});
+    if (length == 0 && ::GetLastError() == ERROR_FILE_INVALID) {
+      return std::unique_ptr<MappedFile>(
+          new MappedFile(const_cast<char*>(kEmptyBuffer), 0, 0, nullptr));
     }
     return nullptr;
   }
@@ -56,27 +70,54 @@
     return nullptr;
   }
   return std::unique_ptr<MappedFile>(
-      new MappedFile{static_cast<char*>(base), length, slop, handle});
+      new MappedFile(static_cast<char*>(base), length, slop, handle));
 #else
-  void* base = mmap(nullptr, file_length, prot, MAP_SHARED, fd, file_offset);
+  void* base = mmap(nullptr, file_length, prot, MAP_SHARED, h, file_offset);
   if (base == MAP_FAILED) {
     // http://b/119818070 "app crashes when reading asset of zero length".
     // mmap fails with EINVAL for a zero length region.
     if (errno == EINVAL && length == 0) {
-      return std::unique_ptr<MappedFile>(new MappedFile{nullptr, 0, 0});
+      return std::unique_ptr<MappedFile>(new MappedFile(const_cast<char*>(kEmptyBuffer), 0, 0));
     }
     return nullptr;
   }
-  return std::unique_ptr<MappedFile>(new MappedFile{static_cast<char*>(base), length, slop});
+  return std::unique_ptr<MappedFile>(new MappedFile(static_cast<char*>(base), length, slop));
 #endif
 }
 
+MappedFile::MappedFile(MappedFile&& other)
+    : base_(std::exchange(other.base_, nullptr)),
+      size_(std::exchange(other.size_, 0)),
+      offset_(std::exchange(other.offset_, 0))
+#ifdef _WIN32
+      ,
+      handle_(std::exchange(other.handle_, nullptr))
+#endif
+{
+}
+
+MappedFile& MappedFile::operator=(MappedFile&& other) {
+  Close();
+  base_ = std::exchange(other.base_, nullptr);
+  size_ = std::exchange(other.size_, 0);
+  offset_ = std::exchange(other.offset_, 0);
+#ifdef _WIN32
+  handle_ = std::exchange(other.handle_, nullptr);
+#endif
+  return *this;
+}
+
 MappedFile::~MappedFile() {
+  Close();
+}
+
+void MappedFile::Close() {
 #if defined(_WIN32)
-  if (base_ != nullptr) UnmapViewOfFile(base_);
+  if (base_ != nullptr && size_ != 0) UnmapViewOfFile(base_);
   if (handle_ != nullptr) CloseHandle(handle_);
+  handle_ = nullptr;
 #else
-  if (base_ != nullptr) munmap(base_, size_ + offset_);
+  if (base_ != nullptr && size_ != 0) munmap(base_, size_ + offset_);
 #endif
 
   base_ = nullptr;
diff --git a/base/mapped_file_test.cpp b/base/mapped_file_test.cpp
index cfde73c..d21703c 100644
--- a/base/mapped_file_test.cpp
+++ b/base/mapped_file_test.cpp
@@ -44,5 +44,6 @@
   ASSERT_TRUE(tf.fd != -1);
 
   auto m = android::base::MappedFile::FromFd(tf.fd, 4096, 0, PROT_READ);
-  ASSERT_EQ(0u, m->size());
+  EXPECT_EQ(0u, m->size());
+  EXPECT_NE(nullptr, m->data());
 }
diff --git a/base/no_destructor_test.cpp b/base/no_destructor_test.cpp
new file mode 100644
index 0000000..f19468a
--- /dev/null
+++ b/base/no_destructor_test.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/no_destructor.h"
+
+#include <gtest/gtest.h>
+
+struct __attribute__((packed)) Bomb {
+  Bomb() : magic_(123) {}
+
+  ~Bomb() { exit(42); }
+
+  int get() const { return magic_; }
+
+ private:
+  [[maybe_unused]] char padding_;
+  int magic_;
+};
+
+TEST(no_destructor, bomb) {
+  ASSERT_EXIT(({
+                {
+                  Bomb b;
+                  if (b.get() != 123) exit(1);
+                }
+
+                exit(0);
+              }),
+              ::testing::ExitedWithCode(42), "");
+}
+
+TEST(no_destructor, defused) {
+  ASSERT_EXIT(({
+                {
+                  android::base::NoDestructor<Bomb> b;
+                  if (b->get() != 123) exit(1);
+                }
+
+                exit(0);
+              }),
+              ::testing::ExitedWithCode(0), "");
+}
+
+TEST(no_destructor, operators) {
+  android::base::NoDestructor<Bomb> b;
+  const android::base::NoDestructor<Bomb>& c = b;
+  ASSERT_EQ(123, b.get()->get());
+  ASSERT_EQ(123, b->get());
+  ASSERT_EQ(123, (*b).get());
+  ASSERT_EQ(123, c.get()->get());
+  ASSERT_EQ(123, c->get());
+  ASSERT_EQ(123, (*c).get());
+}
diff --git a/base/parsebool.cpp b/base/parsebool.cpp
new file mode 100644
index 0000000..ff96fe9
--- /dev/null
+++ b/base/parsebool.cpp
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/parsebool.h"
+#include <errno.h>
+
+namespace android {
+namespace base {
+
+ParseBoolResult ParseBool(std::string_view s) {
+  if (s == "1" || s == "y" || s == "yes" || s == "on" || s == "true") {
+    return ParseBoolResult::kTrue;
+  }
+  if (s == "0" || s == "n" || s == "no" || s == "off" || s == "false") {
+    return ParseBoolResult::kFalse;
+  }
+  return ParseBoolResult::kError;
+}
+
+}  // namespace base
+}  // namespace android
diff --git a/base/parsebool_test.cpp b/base/parsebool_test.cpp
new file mode 100644
index 0000000..a081994
--- /dev/null
+++ b/base/parsebool_test.cpp
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/parsebool.h"
+
+#include <errno.h>
+
+#include <gtest/gtest.h>
+#include <string_view>
+
+using android::base::ParseBool;
+using android::base::ParseBoolResult;
+
+TEST(parsebool, true_) {
+  static const char* yes[] = {
+      "1", "on", "true", "y", "yes",
+  };
+  for (const char* s : yes) {
+    ASSERT_EQ(ParseBoolResult::kTrue, ParseBool(s));
+  }
+}
+
+TEST(parsebool, false_) {
+  static const char* no[] = {
+      "0", "false", "n", "no", "off",
+  };
+  for (const char* s : no) {
+    ASSERT_EQ(ParseBoolResult::kFalse, ParseBool(s));
+  }
+}
+
+TEST(parsebool, invalid) {
+  ASSERT_EQ(ParseBoolResult::kError, ParseBool("blarg"));
+  ASSERT_EQ(ParseBoolResult::kError, ParseBool(""));
+}
diff --git a/base/process.cpp b/base/process.cpp
new file mode 100644
index 0000000..b8cabf6
--- /dev/null
+++ b/base/process.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/process.h"
+
+namespace android {
+namespace base {
+
+void AllPids::PidIterator::Increment() {
+  if (!dir_) {
+    return;
+  }
+
+  dirent* de;
+  while ((de = readdir(dir_.get())) != nullptr) {
+    pid_t pid = atoi(de->d_name);
+    if (pid != 0) {
+      pid_ = pid;
+      return;
+    }
+  }
+  pid_ = -1;
+}
+
+}  // namespace base
+}  // namespace android
diff --git a/base/process_test.cpp b/base/process_test.cpp
new file mode 100644
index 0000000..056f667
--- /dev/null
+++ b/base/process_test.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/process.h"
+
+#include <unistd.h>
+
+#include <gtest/gtest.h>
+
+TEST(process, find_ourselves) {
+#if defined(__linux__)
+  bool found_our_pid = false;
+  for (const auto& pid : android::base::AllPids{}) {
+    if (pid == getpid()) {
+      found_our_pid = true;
+    }
+  }
+
+  EXPECT_TRUE(found_our_pid);
+
+#endif
+}
diff --git a/base/properties.cpp b/base/properties.cpp
index d5a5918..35e41a8 100644
--- a/base/properties.cpp
+++ b/base/properties.cpp
@@ -28,19 +28,23 @@
 #include <map>
 #include <string>
 
+#include <android-base/parsebool.h>
 #include <android-base/parseint.h>
+#include <android-base/strings.h>
 
 namespace android {
 namespace base {
 
 bool GetBoolProperty(const std::string& key, bool default_value) {
-  std::string value = GetProperty(key, "");
-  if (value == "1" || value == "y" || value == "yes" || value == "on" || value == "true") {
-    return true;
-  } else if (value == "0" || value == "n" || value == "no" || value == "off" || value == "false") {
-    return false;
+  switch (ParseBool(GetProperty(key, ""))) {
+    case ParseBoolResult::kError:
+      return default_value;
+    case ParseBoolResult::kFalse:
+      return false;
+    case ParseBoolResult::kTrue:
+      return true;
   }
-  return default_value;
+  __builtin_unreachable();
 }
 
 template <typename T>
@@ -192,6 +196,62 @@
   return (WaitForPropertyCreation(key, relative_timeout, start_time) != nullptr);
 }
 
+CachedProperty::CachedProperty(const char* property_name)
+    : property_name_(property_name),
+      prop_info_(nullptr),
+      cached_area_serial_(0),
+      cached_property_serial_(0),
+      is_read_only_(android::base::StartsWith(property_name, "ro.")),
+      read_only_property_(nullptr) {
+  static_assert(sizeof(cached_value_) == PROP_VALUE_MAX);
+}
+
+const char* CachedProperty::Get(bool* changed) {
+  std::optional<uint32_t> initial_property_serial_ = cached_property_serial_;
+
+  // Do we have a `struct prop_info` yet?
+  if (prop_info_ == nullptr) {
+    // `__system_property_find` is expensive, so only retry if a property
+    // has been created since last time we checked.
+    uint32_t property_area_serial = __system_property_area_serial();
+    if (property_area_serial != cached_area_serial_) {
+      prop_info_ = __system_property_find(property_name_.c_str());
+      cached_area_serial_ = property_area_serial;
+    }
+  }
+
+  if (prop_info_ != nullptr) {
+    // Only bother re-reading the property if it's actually changed since last time.
+    uint32_t property_serial = __system_property_serial(prop_info_);
+    if (property_serial != cached_property_serial_) {
+      __system_property_read_callback(
+          prop_info_,
+          [](void* data, const char*, const char* value, uint32_t serial) {
+            CachedProperty* instance = reinterpret_cast<CachedProperty*>(data);
+            instance->cached_property_serial_ = serial;
+            // Read only properties can be larger than PROP_VALUE_MAX, but also never change value
+            // or location, thus we return the pointer from the shared memory directly.
+            if (instance->is_read_only_) {
+              instance->read_only_property_ = value;
+            } else {
+              strlcpy(instance->cached_value_, value, PROP_VALUE_MAX);
+            }
+          },
+          this);
+    }
+  }
+
+  if (changed) {
+    *changed = cached_property_serial_ != initial_property_serial_;
+  }
+
+  if (is_read_only_) {
+    return read_only_property_;
+  } else {
+    return cached_value_;
+  }
+}
+
 #endif
 
 }  // namespace base
diff --git a/base/properties_test.cpp b/base/properties_test.cpp
index e7d4880..c30c41e 100644
--- a/base/properties_test.cpp
+++ b/base/properties_test.cpp
@@ -230,3 +230,28 @@
   GTEST_LOG_(INFO) << "This test does nothing on the host.\n";
 #endif
 }
+
+TEST(properties, CachedProperty) {
+#if defined(__BIONIC__)
+  android::base::CachedProperty cached_property("debug.libbase.CachedProperty_test");
+  bool changed;
+  cached_property.Get(&changed);
+
+  android::base::SetProperty("debug.libbase.CachedProperty_test", "foo");
+  ASSERT_STREQ("foo", cached_property.Get(&changed));
+  ASSERT_TRUE(changed);
+
+  ASSERT_STREQ("foo", cached_property.Get(&changed));
+  ASSERT_FALSE(changed);
+
+  android::base::SetProperty("debug.libbase.CachedProperty_test", "bar");
+  ASSERT_STREQ("bar", cached_property.Get(&changed));
+  ASSERT_TRUE(changed);
+
+  ASSERT_STREQ("bar", cached_property.Get(&changed));
+  ASSERT_FALSE(changed);
+
+#else
+  GTEST_LOG_(INFO) << "This test does nothing on the host.\n";
+#endif
+}
diff --git a/base/quick_exit.cpp b/base/quick_exit.cpp
deleted file mode 100644
index e4dd62b..0000000
--- a/base/quick_exit.cpp
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "android-base/quick_exit.h"
-
-#if !defined(__linux__)
-
-#include <mutex>
-#include <vector>
-
-namespace android {
-namespace base {
-
-static auto& quick_exit_mutex = *new std::mutex();
-static auto& quick_exit_handlers = *new std::vector<void (*)()>();
-
-void quick_exit(int exit_code) {
-  std::lock_guard<std::mutex> lock(quick_exit_mutex);
-  for (auto it = quick_exit_handlers.rbegin(); it != quick_exit_handlers.rend(); ++it) {
-    (*it)();
-  }
-  _Exit(exit_code);
-}
-
-int at_quick_exit(void (*func)()) {
-  std::lock_guard<std::mutex> lock(quick_exit_mutex);
-  quick_exit_handlers.push_back(func);
-  return 0;
-}
-
-}  // namespace base
-}  // namespace android
-#endif
diff --git a/base/quick_exit_test.cpp b/base/quick_exit_test.cpp
deleted file mode 100644
index 7ca8156..0000000
--- a/base/quick_exit_test.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "android-base/quick_exit.h"
-
-#include <gtest/gtest.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <string>
-
-#include "android-base/test_utils.h"
-
-// These tests are a bit sketchy, since each test run adds global state that affects subsequent
-// tests (including ones not in this file!). Exit with 0 in Exiter and stick the at_quick_exit test
-// at the end to hack around this.
-struct Exiter {
-  ~Exiter() {
-    _Exit(0);
-  }
-};
-
-TEST(quick_exit, smoke) {
-  ASSERT_EXIT(android::base::quick_exit(123), testing::ExitedWithCode(123), "");
-}
-
-TEST(quick_exit, skip_static_destructors) {
-  static Exiter exiter;
-  ASSERT_EXIT(android::base::quick_exit(123), testing::ExitedWithCode(123), "");
-}
-
-TEST(quick_exit, at_quick_exit) {
-  static int counter = 4;
-  // "Functions passed to at_quick_exit are called in reverse order of their registration."
-  ASSERT_EQ(0, android::base::at_quick_exit([]() { _exit(counter); }));
-  ASSERT_EQ(0, android::base::at_quick_exit([]() { counter += 2; }));
-  ASSERT_EQ(0, android::base::at_quick_exit([]() { counter *= 10; }));
-  ASSERT_EXIT(android::base::quick_exit(123), testing::ExitedWithCode(42), "");
-}
diff --git a/base/result_test.cpp b/base/result_test.cpp
new file mode 100644
index 0000000..c0ac0fd
--- /dev/null
+++ b/base/result_test.cpp
@@ -0,0 +1,422 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/result.h"
+
+#include "errno.h"
+
+#include <istream>
+#include <string>
+
+#include <gtest/gtest.h>
+
+using namespace std::string_literals;
+
+namespace android {
+namespace base {
+
+TEST(result, result_accessors) {
+  Result<std::string> result = "success";
+  ASSERT_RESULT_OK(result);
+  ASSERT_TRUE(result.has_value());
+
+  EXPECT_EQ("success", *result);
+  EXPECT_EQ("success", result.value());
+
+  EXPECT_EQ('s', result->data()[0]);
+}
+
+TEST(result, result_accessors_rvalue) {
+  ASSERT_TRUE(Result<std::string>("success").ok());
+  ASSERT_TRUE(Result<std::string>("success").has_value());
+
+  EXPECT_EQ("success", *Result<std::string>("success"));
+  EXPECT_EQ("success", Result<std::string>("success").value());
+
+  EXPECT_EQ('s', Result<std::string>("success")->data()[0]);
+}
+
+TEST(result, result_void) {
+  Result<void> ok = {};
+  EXPECT_RESULT_OK(ok);
+  ok.value();  // should not crash
+  ASSERT_DEATH(ok.error(), "");
+
+  Result<void> fail = Error() << "failure" << 1;
+  EXPECT_FALSE(fail.ok());
+  EXPECT_EQ("failure1", fail.error().message());
+  EXPECT_EQ(0, fail.error().code());
+  EXPECT_TRUE(ok != fail);
+  ASSERT_DEATH(fail.value(), "");
+
+  auto test = [](bool ok) -> Result<void> {
+    if (ok) return {};
+    else return Error() << "failure" << 1;
+  };
+  EXPECT_TRUE(test(true).ok());
+  EXPECT_FALSE(test(false).ok());
+  test(true).value();  // should not crash
+  ASSERT_DEATH(test(true).error(), "");
+  ASSERT_DEATH(test(false).value(), "");
+  EXPECT_EQ("failure1", test(false).error().message());
+}
+
+TEST(result, result_error) {
+  Result<void> result = Error() << "failure" << 1;
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  EXPECT_EQ(0, result.error().code());
+  EXPECT_EQ("failure1", result.error().message());
+}
+
+TEST(result, result_error_empty) {
+  Result<void> result = Error();
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  EXPECT_EQ(0, result.error().code());
+  EXPECT_EQ("", result.error().message());
+}
+
+TEST(result, result_error_rvalue) {
+  // Error() and ErrnoError() aren't actually used to create a Result<T> object.
+  // Under the hood, they are an intermediate class that can be implicitly constructed into a
+  // Result<T>.  This is needed both to create the ostream and because Error() itself, by
+  // definition will not know what the type, T, of the underlying Result<T> object that it would
+  // create is.
+
+  auto MakeRvalueErrorResult = []() -> Result<void> { return Error() << "failure" << 1; };
+  ASSERT_FALSE(MakeRvalueErrorResult().ok());
+  ASSERT_FALSE(MakeRvalueErrorResult().has_value());
+
+  EXPECT_EQ(0, MakeRvalueErrorResult().error().code());
+  EXPECT_EQ("failure1", MakeRvalueErrorResult().error().message());
+}
+
+TEST(result, result_errno_error) {
+  constexpr int test_errno = 6;
+  errno = test_errno;
+  Result<void> result = ErrnoError() << "failure" << 1;
+
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  EXPECT_EQ(test_errno, result.error().code());
+  EXPECT_EQ("failure1: "s + strerror(test_errno), result.error().message());
+}
+
+TEST(result, result_errno_error_no_text) {
+  constexpr int test_errno = 6;
+  errno = test_errno;
+  Result<void> result = ErrnoError();
+
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  EXPECT_EQ(test_errno, result.error().code());
+  EXPECT_EQ(strerror(test_errno), result.error().message());
+}
+
+TEST(result, result_error_from_other_result) {
+  auto error_text = "test error"s;
+  Result<void> result = Error() << error_text;
+
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  Result<std::string> result2 = result.error();
+
+  ASSERT_FALSE(result2.ok());
+  ASSERT_FALSE(result2.has_value());
+
+  EXPECT_EQ(0, result2.error().code());
+  EXPECT_EQ(error_text, result2.error().message());
+}
+
+TEST(result, result_error_through_ostream) {
+  auto error_text = "test error"s;
+  Result<void> result = Error() << error_text;
+
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  Result<std::string> result2 = Error() << result.error();
+
+  ASSERT_FALSE(result2.ok());
+  ASSERT_FALSE(result2.has_value());
+
+  EXPECT_EQ(0, result2.error().code());
+  EXPECT_EQ(error_text, result2.error().message());
+}
+
+TEST(result, result_errno_error_through_ostream) {
+  auto error_text = "test error"s;
+  constexpr int test_errno = 6;
+  errno = 6;
+  Result<void> result = ErrnoError() << error_text;
+
+  errno = 0;
+
+  ASSERT_FALSE(result.ok());
+  ASSERT_FALSE(result.has_value());
+
+  Result<std::string> result2 = Error() << result.error();
+
+  ASSERT_FALSE(result2.ok());
+  ASSERT_FALSE(result2.has_value());
+
+  EXPECT_EQ(test_errno, result2.error().code());
+  EXPECT_EQ(error_text + ": " + strerror(test_errno), result2.error().message());
+}
+
+TEST(result, constructor_forwarding) {
+  auto result = Result<std::string>(std::in_place, 5, 'a');
+
+  ASSERT_RESULT_OK(result);
+  ASSERT_TRUE(result.has_value());
+
+  EXPECT_EQ("aaaaa", *result);
+}
+
+struct ConstructorTracker {
+  static size_t constructor_called;
+  static size_t copy_constructor_called;
+  static size_t move_constructor_called;
+  static size_t copy_assignment_called;
+  static size_t move_assignment_called;
+
+  template <typename T>
+  ConstructorTracker(T&& string) : string(string) {
+    ++constructor_called;
+  }
+
+  ConstructorTracker(const ConstructorTracker& ct) {
+    ++copy_constructor_called;
+    string = ct.string;
+  }
+  ConstructorTracker(ConstructorTracker&& ct) noexcept {
+    ++move_constructor_called;
+    string = std::move(ct.string);
+  }
+  ConstructorTracker& operator=(const ConstructorTracker& ct) {
+    ++copy_assignment_called;
+    string = ct.string;
+    return *this;
+  }
+  ConstructorTracker& operator=(ConstructorTracker&& ct) noexcept {
+    ++move_assignment_called;
+    string = std::move(ct.string);
+    return *this;
+  }
+
+  std::string string;
+};
+
+size_t ConstructorTracker::constructor_called = 0;
+size_t ConstructorTracker::copy_constructor_called = 0;
+size_t ConstructorTracker::move_constructor_called = 0;
+size_t ConstructorTracker::copy_assignment_called = 0;
+size_t ConstructorTracker::move_assignment_called = 0;
+
+Result<ConstructorTracker> ReturnConstructorTracker(const std::string& in) {
+  if (in.empty()) {
+    return "literal string";
+  }
+  if (in == "test2") {
+    return ConstructorTracker(in + in + "2");
+  }
+  ConstructorTracker result(in + " " + in);
+  return result;
+};
+
+TEST(result, no_copy_on_return) {
+  // If returning parameters that may be used to implicitly construct the type T of Result<T>,
+  // then those parameters are forwarded to the construction of Result<T>.
+
+  // If returning an prvalue or xvalue, it will be move constructed during the construction of
+  // Result<T>.
+
+  // This check ensures that that is the case, and particularly that no copy constructors
+  // are called.
+
+  auto result1 = ReturnConstructorTracker("");
+  ASSERT_RESULT_OK(result1);
+  EXPECT_EQ("literal string", result1->string);
+  EXPECT_EQ(1U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  auto result2 = ReturnConstructorTracker("test2");
+  ASSERT_RESULT_OK(result2);
+  EXPECT_EQ("test2test22", result2->string);
+  EXPECT_EQ(2U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+
+  auto result3 = ReturnConstructorTracker("test3");
+  ASSERT_RESULT_OK(result3);
+  EXPECT_EQ("test3 test3", result3->string);
+  EXPECT_EQ(3U, ConstructorTracker::constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
+  EXPECT_EQ(2U, ConstructorTracker::move_constructor_called);
+  EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
+  EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
+}
+
+// Below two tests require that we do not hide the move constructor with our forwarding reference
+// constructor.  This is done with by disabling the forwarding reference constructor if its first
+// and only type is Result<T>.
+TEST(result, result_result_with_success) {
+  auto return_result_result_with_success = []() -> Result<Result<void>> { return Result<void>(); };
+  auto result = return_result_result_with_success();
+  ASSERT_RESULT_OK(result);
+  ASSERT_RESULT_OK(*result);
+
+  auto inner_result = result.value();
+  ASSERT_RESULT_OK(inner_result);
+}
+
+TEST(result, result_result_with_failure) {
+  auto return_result_result_with_error = []() -> Result<Result<void>> {
+    return Result<void>(ResultError("failure string", 6));
+  };
+  auto result = return_result_result_with_error();
+  ASSERT_RESULT_OK(result);
+  ASSERT_FALSE(result->ok());
+  EXPECT_EQ("failure string", (*result).error().message());
+  EXPECT_EQ(6, (*result).error().code());
+}
+
+// This test requires that we disable the forwarding reference constructor if Result<T> is the
+// *only* type that we are forwarding.  In otherwords, if we are forwarding Result<T>, int to
+// construct a Result<T>, then we still need the constructor.
+TEST(result, result_two_parameter_constructor_same_type) {
+  struct TestStruct {
+    TestStruct(int value) : value_(value) {}
+    TestStruct(Result<TestStruct> result, int value) : value_(result->value_ * value) {}
+    int value_;
+  };
+
+  auto return_test_struct = []() -> Result<TestStruct> {
+    return Result<TestStruct>(std::in_place, Result<TestStruct>(std::in_place, 6), 6);
+  };
+
+  auto result = return_test_struct();
+  ASSERT_RESULT_OK(result);
+  EXPECT_EQ(36, result->value_);
+}
+
+TEST(result, die_on_access_failed_result) {
+  Result<std::string> result = Error();
+  ASSERT_DEATH(*result, "");
+}
+
+TEST(result, die_on_get_error_succesful_result) {
+  Result<std::string> result = "success";
+  ASSERT_DEATH(result.error(), "");
+}
+
+template <class CharT>
+std::basic_ostream<CharT>& SetErrnoToTwo(std::basic_ostream<CharT>& ss) {
+  errno = 2;
+  return ss;
+}
+
+TEST(result, preserve_errno) {
+  errno = 1;
+  int old_errno = errno;
+  Result<int> result = Error() << "Failed" << SetErrnoToTwo<char>;
+  ASSERT_FALSE(result.ok());
+  EXPECT_EQ(old_errno, errno);
+
+  errno = 1;
+  old_errno = errno;
+  Result<int> result2 = ErrnoError() << "Failed" << SetErrnoToTwo<char>;
+  ASSERT_FALSE(result2.ok());
+  EXPECT_EQ(old_errno, errno);
+  EXPECT_EQ(old_errno, result2.error().code());
+}
+
+TEST(result, error_with_fmt) {
+  Result<int> result = Errorf("{} {}!", "hello", "world");
+  EXPECT_EQ("hello world!", result.error().message());
+
+  result = Errorf("{} {}!", std::string("hello"), std::string("world"));
+  EXPECT_EQ("hello world!", result.error().message());
+
+  result = Errorf("{1} {0}!", "world", "hello");
+  EXPECT_EQ("hello world!", result.error().message());
+
+  result = Errorf("hello world!");
+  EXPECT_EQ("hello world!", result.error().message());
+
+  Result<int> result2 = Errorf("error occurred with {}", result.error());
+  EXPECT_EQ("error occurred with hello world!", result2.error().message());
+
+  constexpr int test_errno = 6;
+  errno = test_errno;
+  result = ErrnoErrorf("{} {}!", "hello", "world");
+  EXPECT_EQ(test_errno, result.error().code());
+  EXPECT_EQ("hello world!: "s + strerror(test_errno), result.error().message());
+}
+
+TEST(result, error_with_fmt_carries_errno) {
+  constexpr int inner_errno = 6;
+  errno = inner_errno;
+  Result<int> inner_result = ErrnoErrorf("inner failure");
+  errno = 0;
+  EXPECT_EQ(inner_errno, inner_result.error().code());
+
+  // outer_result is created with Errorf, but its error code is got from inner_result.
+  Result<int> outer_result = Errorf("outer failure caused by {}", inner_result.error());
+  EXPECT_EQ(inner_errno, outer_result.error().code());
+  EXPECT_EQ("outer failure caused by inner failure: "s + strerror(inner_errno),
+            outer_result.error().message());
+
+  // now both result objects are created with ErrnoErrorf. errno from the inner_result
+  // is not passed to outer_result.
+  constexpr int outer_errno = 10;
+  errno = outer_errno;
+  outer_result = ErrnoErrorf("outer failure caused by {}", inner_result.error());
+  EXPECT_EQ(outer_errno, outer_result.error().code());
+  EXPECT_EQ("outer failure caused by inner failure: "s + strerror(inner_errno) + ": "s +
+                strerror(outer_errno),
+            outer_result.error().message());
+}
+
+TEST(result, errno_chaining_multiple) {
+  constexpr int errno1 = 6;
+  errno = errno1;
+  Result<int> inner1 = ErrnoErrorf("error1");
+
+  constexpr int errno2 = 10;
+  errno = errno2;
+  Result<int> inner2 = ErrnoErrorf("error2");
+
+  // takes the error code of inner2 since its the last one.
+  Result<int> outer = Errorf("two errors: {}, {}", inner1.error(), inner2.error());
+  EXPECT_EQ(errno2, outer.error().code());
+  EXPECT_EQ("two errors: error1: "s + strerror(errno1) + ", error2: "s + strerror(errno2),
+            outer.error().message());
+}
+
+}  // namespace base
+}  // namespace android
diff --git a/base/stringprintf.cpp b/base/stringprintf.cpp
index 78e1e8d..e83ab13 100644
--- a/base/stringprintf.cpp
+++ b/base/stringprintf.cpp
@@ -25,7 +25,7 @@
 
 void StringAppendV(std::string* dst, const char* format, va_list ap) {
   // First try with a small fixed size buffer
-  char space[1024];
+  char space[1024] __attribute__((__uninitialized__));
 
   // It's possible for methods that use a va_list to invalidate
   // the data in it upon use.  The fix is to make a copy
diff --git a/base/strings.cpp b/base/strings.cpp
index bb3167e..40b2bf2 100644
--- a/base/strings.cpp
+++ b/base/strings.cpp
@@ -116,5 +116,24 @@
   return lhs.size() == rhs.size() && strncasecmp(lhs.data(), rhs.data(), lhs.size()) == 0;
 }
 
+std::string StringReplace(std::string_view s, std::string_view from, std::string_view to,
+                          bool all) {
+  if (from.empty()) return std::string(s);
+
+  std::string result;
+  std::string_view::size_type start_pos = 0;
+  do {
+    std::string_view::size_type pos = s.find(from, start_pos);
+    if (pos == std::string_view::npos) break;
+
+    result.append(s.data() + start_pos, pos - start_pos);
+    result.append(to.data(), to.size());
+
+    start_pos = pos + from.size();
+  } while (all);
+  result.append(s.data() + start_pos, s.size() - start_pos);
+  return result;
+}
+
 }  // namespace base
 }  // namespace android
diff --git a/base/strings_test.cpp b/base/strings_test.cpp
index 9d74094..5ae3094 100644
--- a/base/strings_test.cpp
+++ b/base/strings_test.cpp
@@ -295,3 +295,62 @@
 TEST(strings, ubsan_28729303) {
   android::base::Split("/dev/null", ":");
 }
+
+TEST(strings, ConsumePrefix) {
+  std::string_view s{"foo.bar"};
+  ASSERT_FALSE(android::base::ConsumePrefix(&s, "bar."));
+  ASSERT_EQ("foo.bar", s);
+  ASSERT_TRUE(android::base::ConsumePrefix(&s, "foo."));
+  ASSERT_EQ("bar", s);
+}
+
+TEST(strings, ConsumeSuffix) {
+  std::string_view s{"foo.bar"};
+  ASSERT_FALSE(android::base::ConsumeSuffix(&s, ".foo"));
+  ASSERT_EQ("foo.bar", s);
+  ASSERT_TRUE(android::base::ConsumeSuffix(&s, ".bar"));
+  ASSERT_EQ("foo", s);
+}
+
+TEST(strings, StringReplace_false) {
+  // No change.
+  ASSERT_EQ("abcabc", android::base::StringReplace("abcabc", "z", "Z", false));
+  ASSERT_EQ("", android::base::StringReplace("", "z", "Z", false));
+  ASSERT_EQ("abcabc", android::base::StringReplace("abcabc", "", "Z", false));
+
+  // Equal lengths.
+  ASSERT_EQ("Abcabc", android::base::StringReplace("abcabc", "a", "A", false));
+  ASSERT_EQ("aBcabc", android::base::StringReplace("abcabc", "b", "B", false));
+  ASSERT_EQ("abCabc", android::base::StringReplace("abcabc", "c", "C", false));
+
+  // Longer replacement.
+  ASSERT_EQ("foobcabc", android::base::StringReplace("abcabc", "a", "foo", false));
+  ASSERT_EQ("afoocabc", android::base::StringReplace("abcabc", "b", "foo", false));
+  ASSERT_EQ("abfooabc", android::base::StringReplace("abcabc", "c", "foo", false));
+
+  // Shorter replacement.
+  ASSERT_EQ("xxyz", android::base::StringReplace("abcxyz", "abc", "x", false));
+  ASSERT_EQ("axyz", android::base::StringReplace("abcxyz", "bcx", "x", false));
+  ASSERT_EQ("abcx", android::base::StringReplace("abcxyz", "xyz", "x", false));
+}
+
+TEST(strings, StringReplace_true) {
+  // No change.
+  ASSERT_EQ("abcabc", android::base::StringReplace("abcabc", "z", "Z", true));
+  ASSERT_EQ("", android::base::StringReplace("", "z", "Z", true));
+  ASSERT_EQ("abcabc", android::base::StringReplace("abcabc", "", "Z", true));
+
+  // Equal lengths.
+  ASSERT_EQ("AbcAbc", android::base::StringReplace("abcabc", "a", "A", true));
+  ASSERT_EQ("aBcaBc", android::base::StringReplace("abcabc", "b", "B", true));
+  ASSERT_EQ("abCabC", android::base::StringReplace("abcabc", "c", "C", true));
+
+  // Longer replacement.
+  ASSERT_EQ("foobcfoobc", android::base::StringReplace("abcabc", "a", "foo", true));
+  ASSERT_EQ("afoocafooc", android::base::StringReplace("abcabc", "b", "foo", true));
+  ASSERT_EQ("abfooabfoo", android::base::StringReplace("abcabc", "c", "foo", true));
+
+  // Shorter replacement.
+  ASSERT_EQ("xxyzx", android::base::StringReplace("abcxyzabc", "abc", "x", true));
+  ASSERT_EQ("<xx>", android::base::StringReplace("<abcabc>", "abc", "x", true));
+}
diff --git a/bootstat/Android.bp b/bootstat/Android.bp
index 5e2d171..edff26d 100644
--- a/bootstat/Android.bp
+++ b/bootstat/Android.bp
@@ -30,8 +30,8 @@
         "libbase",
         "libcutils",
         "liblog",
-        "libmetricslogger",
     ],
+    static_libs: ["libgtest_prod"],
 }
 
 // bootstat static library
diff --git a/bootstat/boot_event_record_store.h b/bootstat/boot_event_record_store.h
index f872c85..e852304 100644
--- a/bootstat/boot_event_record_store.h
+++ b/bootstat/boot_event_record_store.h
@@ -69,4 +69,4 @@
   DISALLOW_COPY_AND_ASSIGN(BootEventRecordStore);
 };
 
-#endif  // BOOT_EVENT_RECORD_STORE_H_
\ No newline at end of file
+#endif  // BOOT_EVENT_RECORD_STORE_H_
diff --git a/bootstat/boot_reason_test.sh b/bootstat/boot_reason_test.sh
index cb09433..2f2919f 100755
--- a/bootstat/boot_reason_test.sh
+++ b/bootstat/boot_reason_test.sh
@@ -7,7 +7,7 @@
 # - watch adb logcat -b all -d -s bootstat
 # - watch adb logcat -b all -d | audit2allow
 # - wait until screen is up, boot has completed, can mean wait for
-#   sys.boot_completed=1 and sys.logbootcomplete=1 to be true
+#   sys.boot_completed=1 and sys.bootstat.first_boot_completed=1 to be true
 #
 # All test frames, and nothing else, must be function names prefixed and
 # specifiged with the pattern 'test_<test>() {' as this is also how the
@@ -230,16 +230,16 @@
       if [ -n "`get_property sys.boot.reason`" ]
       then
         vals=`get_property |
-              sed -n 's/[[]sys[.]\(boot_completed\|logbootcomplete\)[]]: [[]\([01]\)[]]$/\1=\2/p'`
-        if [ "${vals}" = "`echo boot_completed=1 ; echo logbootcomplete=1`" ]
-        then
-          sleep 1
-          break
-        fi
-        if [ "${vals}" = "`echo logbootcomplete=1 ; echo boot_completed=1`" ]
-        then
-          sleep 1
-          break
+              sed -n 's/[[]sys[.]\(boot_completed\|logbootcomplete\|bootstat[.]first_boot_completed\)[]]: [[]\([01]\)[]]$/\1=\2/p'`
+        if [ X"${vals}" != X"${vals##*boot_completed=1}" ]; then
+          if [ X"${vals}" != X"${vals##*logbootcomple=1}" ]; then
+            sleep 1
+            break
+          fi
+          if [ X"${vals}" != X"${vals##*bootstat.first_boot_completed=1}" ]; then
+            sleep 1
+            break
+          fi
         fi
       fi
     fi
@@ -384,15 +384,15 @@
 init    : processing action (boot) from (/system/etc/init/bootstat.rc
 init    : processing action (ro.boot.bootreason=*) from (/system/etc/init/bootstat.rc
 init    : processing action (ro.boot.bootreason=* && post-fs) from (/system/etc/init/bootstat.rc
-init    : processing action (zygote-start) from (/system/etc/init/bootstat.rc
-init    : processing action (sys.boot_completed=1 && sys.logbootcomplete=1) from (/system/etc/init/bootstat.rc
+init    : processing action (sys.bootstat.first_zygote_start=0 && zygote-start) from (/system/etc/init/bootstat.rc
+init    : processing action (sys.boot_completed=1 && sys.bootstat.first_boot_completed=0) from (/system/etc/init/bootstat.rc
  (/system/bin/bootstat --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l)'
  (/system/bin/bootstat --set_system_boot_reason --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l)'
  (/system/bin/bootstat -r post_decrypt_time_elapsed)'
-init    : Command 'exec - system log -- /system/bin/bootstat --record_boot_complete' action=sys.boot_completed=1 && sys.logbootcomplete=1 (/system/etc/init/bootstat.rc:
-init    : Command 'exec - system log -- /system/bin/bootstat --record_boot_reason' action=sys.boot_completed=1 && sys.logbootcomplete=1 (/system/etc/init/bootstat.rc:
-init    : Command 'exec - system log -- /system/bin/bootstat --record_time_since_factory_reset' action=sys.boot_completed=1 && sys.logbootcomplete=1 (/system/etc/init/bootstat.rc:
-init    : Command 'exec_background - system log -- /system/bin/bootstat --set_system_boot_reason --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l' action=sys.boot_completed=1 && sys.logbootcomplete=1 (/system/etc/init/bootstat.rc
+init    : Command 'exec - system log -- /system/bin/bootstat --record_boot_complete' action=sys.boot_completed=1 && sys.bootstat.first_boot_completed=0 (/system/etc/init/bootstat.rc:
+init    : Command 'exec - system log -- /system/bin/bootstat --record_boot_reason' action=sys.boot_completed=1 && sys.bootstat.first_boot_completed=0 (/system/etc/init/bootstat.rc:
+init    : Command 'exec - system log -- /system/bin/bootstat --record_time_since_factory_reset' action=sys.boot_completed=1 && sys.bootstat.first_boot_completed=0 (/system/etc/init/bootstat.rc:
+init    : Command 'exec_background - system log -- /system/bin/bootstat --set_system_boot_reason --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l' action=sys.boot_completed=1 && sys.bootstat.first_boot_completed=0 (/system/etc/init/bootstat.rc
  (/system/bin/bootstat --record_boot_complete)'...
  (/system/bin/bootstat --record_boot_complete)' (pid${SPACE}
  (/system/bin/bootstat --record_boot_reason)'...
@@ -636,7 +636,7 @@
   rm -r ${ANDROID_PRODUCT_OUT}/obj/ETC/system_build_prop_intermediates ||
     true
   pushd ${ANDROID_BUILD_TOP} >&2
-  make -j50 >&2
+  build/soong/soong_ui.bash --make-mode >&2
   if [ ${?} != 0 ]; then
     popd >&2
     return 1
@@ -1253,7 +1253,12 @@
         echo 1 reboot,empty # negative test (ID for unknown is 1)
         ;;
       reboot)
-        echo 1 reboo        # negative test (ID for unknown is 1)
+        echo 1 reboog       # negative test (ID for unknown is 1)
+        ;;
+      'reboot,pmic_off_fault,.*')
+        echo ${id} reboot,pmic_off_fault,hello,world
+        echo ${id} reboot,pmic_off_fault,
+        echo 1 reboot,pmic_off_fault
         ;;
     esac
     echo ${id} "${match}"   # matches b/c of exact
@@ -1266,6 +1271,8 @@
 - (wait until screen is up, boot has completed)
 - read bootstat for kBootReasonMap entries and test them all" ]
 test_kBootReasonMap() {
+  checkDebugBuild || return
+  duration_test 15
   local tempfile="`mktemp`"
   local arg=--boot_reason_enum
   adb_su bootstat ${arg} </dev/null 2>/dev/null |
@@ -1295,7 +1302,8 @@
   report_bootstat_logs -t${T} \
     '-bootstat: Service started: bootstat --boot_reason_enum=' \
     '-bootstat: Unknown boot reason: reboot,empty' \
-    '-bootstat: Unknown boot reason: reboo'
+    '-bootstat: Unknown boot reason: reboog' \
+    '-bootstat: Unknown boot reason: reboot,pmic_off_fault'
 }
 
 [ "USAGE: ${progname} [-s SERIAL] [tests]...
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index 7b60524..5d6cee4 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -32,6 +32,8 @@
 #include <memory>
 #include <regex>
 #include <string>
+#include <string_view>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
@@ -44,21 +46,138 @@
 #include <android/log.h>
 #include <cutils/android_reboot.h>
 #include <cutils/properties.h>
-#include <metricslogger/metrics_logger.h>
 #include <statslog.h>
 
 #include "boot_event_record_store.h"
 
 namespace {
 
+struct AtomInfo {
+  int32_t atom;
+  int32_t event;
+};
+
+// Maps BootEvent used inside bootstat into statsd atom defined in
+// frameworks/base/cmds/statsd/src/atoms.proto.
+const std::unordered_map<std::string_view, AtomInfo> kBootEventToAtomInfo = {
+    // ELAPSED_TIME
+    {"ro.boottime.init",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__ANDROID_INIT_STAGE_1}},
+    {"boot_complete",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__BOOT_COMPLETE}},
+    {"boot_decryption_complete",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__BOOT_COMPLETE_ENCRYPTION}},
+    {"boot_complete_no_encryption",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__BOOT_COMPLETE_NO_ENCRYPTION}},
+    {"boot_complete_post_decrypt",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__BOOT_COMPLETE_POST_DECRYPT}},
+    {"factory_reset_boot_complete",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__FACTORY_RESET_BOOT_COMPLETE}},
+    {"factory_reset_boot_complete_no_encryption",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::
+          BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__FACTORY_RESET_BOOT_COMPLETE_NO_ENCRYPTION}},
+    {"factory_reset_boot_complete_post_decrypt",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::
+          BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__FACTORY_RESET_BOOT_COMPLETE_POST_DECRYPT}},
+    {"ota_boot_complete",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__OTA_BOOT_COMPLETE}},
+    {"ota_boot_complete_no_encryption",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__OTA_BOOT_COMPLETE_NO_ENCRYPTION}},
+    {"ota_boot_complete_post_decrypt",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__OTA_BOOT_COMPLETE_POST_DECRYPT}},
+    {"post_decrypt_time_elapsed",
+     {android::util::BOOT_TIME_EVENT_ELAPSED_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_ELAPSED_TIME__EVENT__POST_DECRYPT}},
+    // DURATION
+    {"absolute_boot_time",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__ABSOLUTE_BOOT_TIME}},
+    {"boottime.bootloader.1BLE",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_FIRST_STAGE_EXEC}},
+    {"boottime.bootloader.1BLL",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_FIRST_STAGE_LOAD}},
+    {"boottime.bootloader.KL",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_KERNEL_LOAD}},
+    {"boottime.bootloader.2BLE",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_SECOND_STAGE_EXEC}},
+    {"boottime.bootloader.2BLL",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_SECOND_STAGE_LOAD}},
+    {"boottime.bootloader.SW",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_UI_WAIT}},
+    {"boottime.bootloader.total",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__BOOTLOADER_TOTAL}},
+    {"boottime.init.cold_boot_wait",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__COLDBOOT_WAIT}},
+    {"time_since_factory_reset",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__FACTORY_RESET_TIME_SINCE_RESET}},
+    {"ro.boottime.init.first_stage",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__ANDROID_INIT_STAGE_1}},
+    {"ro.boottime.init.selinux",
+     {android::util::BOOT_TIME_EVENT_DURATION_REPORTED,
+      android::util::BOOT_TIME_EVENT_DURATION__EVENT__SELINUX_INIT}},
+    // UTC_TIME
+    {"factory_reset",
+     {android::util::BOOT_TIME_EVENT_UTC_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_UTC_TIME__EVENT__FACTORY_RESET_RESET_TIME}},
+    {"factory_reset_current_time",
+     {android::util::BOOT_TIME_EVENT_UTC_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_UTC_TIME__EVENT__FACTORY_RESET_CURRENT_TIME}},
+    {"factory_reset_record_value",
+     {android::util::BOOT_TIME_EVENT_UTC_TIME_REPORTED,
+      android::util::BOOT_TIME_EVENT_UTC_TIME__EVENT__FACTORY_RESET_RECORD_VALUE}},
+    // ERROR_CODE
+    {"factory_reset_current_time_failure",
+     {android::util::BOOT_TIME_EVENT_ERROR_CODE_REPORTED,
+      android::util::BOOT_TIME_EVENT_ERROR_CODE__EVENT__FACTORY_RESET_CURRENT_TIME_FAILURE}},
+};
+
 // Scans the boot event record store for record files and logs each boot event
 // via EventLog.
 void LogBootEvents() {
   BootEventRecordStore boot_event_store;
-
   auto events = boot_event_store.GetAllBootEvents();
-  for (auto i = events.cbegin(); i != events.cend(); ++i) {
-    android::metricslogger::LogHistogram(i->first, i->second);
+  std::vector<std::string_view> notSupportedEvents;
+  for (const auto& event : events) {
+    const auto& name = event.first;
+    const auto& info = kBootEventToAtomInfo.find(name);
+    if (info != kBootEventToAtomInfo.end()) {
+      if (info->second.atom == android::util::BOOT_TIME_EVENT_ERROR_CODE_REPORTED) {
+        android::util::stats_write(static_cast<int32_t>(info->second.atom),
+                                   static_cast<int32_t>(info->second.event),
+                                   static_cast<int32_t>(event.second));
+      } else {
+        android::util::stats_write(static_cast<int32_t>(info->second.atom),
+                                   static_cast<int32_t>(info->second.event),
+                                   static_cast<int64_t>(event.second));
+      }
+    } else {
+      notSupportedEvents.push_back(name);
+    }
+  }
+  if (!notSupportedEvents.empty()) {
+    LOG(WARNING) << "LogBootEvents, atomInfo not defined for events:"
+                 << android::base::Join(notSupportedEvents, ',');
   }
 }
 
@@ -140,13 +259,13 @@
     {"mba_err", 13},
     {"Watchdog", 14},
     {"Panic", 15},
-    {"power_key", 16},
-    {"power_on", 17},
+    {"power_key", 16},  // aliasReasons to cold,powerkey (Mediatek)
+    {"power_on", 17},   // aliasReasons to cold,powerkey
     {"Reboot", 18},
     {"rtc", 19},
     {"edl", 20},
     {"oem_pon1", 21},
-    {"oem_powerkey", 22},
+    {"oem_powerkey", 22},  // aliasReasons to cold,powerkey
     {"oem_unknown_reset", 23},
     {"srto: HWWDT reset SC", 24},
     {"srto: HWWDT reset platform", 25},
@@ -201,15 +320,15 @@
     {"hard,hw_reset", 72},
     {"shutdown,suspend", 73},    // Suspend to RAM
     {"shutdown,hibernate", 74},  // Suspend to DISK
-    {"power_on_key", 75},
-    {"reboot_by_key", 76},
-    {"wdt_by_pass_pwk", 77},
-    {"reboot_longkey", 78},
-    {"powerkey", 79},
-    {"usb", 80},
-    {"wdt", 81},
-    {"tool_by_pass_pwk", 82},
-    {"2sec_reboot", 83},
+    {"power_on_key", 75},        // aliasReasons to cold,powerkey
+    {"reboot_by_key", 76},       // translated to reboot,by_key
+    {"wdt_by_pass_pwk", 77},     // Mediatek
+    {"reboot_longkey", 78},      // translated to reboot,longkey
+    {"powerkey", 79},            // aliasReasons to cold,powerkey
+    {"usb", 80},                 // aliasReasons to cold,charger (Mediatek)
+    {"wdt", 81},                 // Mediatek
+    {"tool_by_pass_pwk", 82},    // aliasReasons to reboot,tool (Mediatek)
+    {"2sec_reboot", 83},         // aliasReasons to cold,rtc,2sec (Mediatek)
     {"reboot,by_key", 84},
     {"reboot,longkey", 85},
     {"reboot,2sec", 86},  // Deprecate in two years, replaced with cold,rtc,2sec
@@ -219,28 +338,28 @@
     {"reboot,rescueparty", 90},
     {"charge", 91},
     {"oem_tz_crash", 92},
-    {"uvlo", 93},  // aliasReasons converts to reboot,undervoltage
+    {"uvlo", 93},  // aliasReasons to reboot,undervoltage
     {"oem_ps_hold", 94},
     {"abnormal_reset", 95},
     {"oemerr_unknown", 96},
     {"reboot_fastboot_mode", 97},
     {"watchdog_apps_bite", 98},
     {"xpu_err", 99},
-    {"power_on_usb", 100},
+    {"power_on_usb", 100},  // aliasReasons to cold,charger
     {"watchdog_rpm", 101},
     {"watchdog_nonsec", 102},
     {"watchdog_apps_bark", 103},
     {"reboot_dmverity_corrupted", 104},
-    {"reboot_smpl", 105},  // aliasReasons converts to reboot,powerloss
+    {"reboot_smpl", 105},  // aliasReasons to reboot,powerloss
     {"watchdog_sdi_apps_reset", 106},
-    {"smpl", 107},  // aliasReasons converts to reboot,powerloss
+    {"smpl", 107},  // aliasReasons to reboot,powerloss
     {"oem_modem_failed_to_powerup", 108},
     {"reboot_normal", 109},
     {"oem_lpass_cfg", 110},
     {"oem_xpu_ns_error", 111},
-    {"power_key_press", 112},
+    {"power_key_press", 112},  // aliasReasons to cold,powerkey
     {"hardware_reset", 113},
-    {"reboot_by_powerkey", 114},
+    {"reboot_by_powerkey", 114},  // aliasReasons to cold,powerkey (is this correct?)
     {"reboot_verity", 115},
     {"oem_rpm_undef_error", 116},
     {"oem_crash_on_the_lk", 117},
@@ -250,7 +369,7 @@
     {"factory_cable", 121},
     {"oem_ar6320_failed_to_powerup", 122},
     {"watchdog_rpm_bite", 123},
-    {"power_on_cable", 124},
+    {"power_on_cable", 124},  // aliasReasons to cold,charger
     {"reboot_unknown", 125},
     {"wireless_charger", 126},
     {"0x776655ff", 127},
@@ -276,10 +395,10 @@
     {"software_master", 147},
     {"cold,charger", 148},
     {"cold,rtc", 149},
-    {"cold,rtc,2sec", 150},
-    {"reboot,tool", 151},
-    {"reboot,wdt", 152},
-    {"reboot,unknown", 153},
+    {"cold,rtc,2sec", 150},   // Mediatek
+    {"reboot,tool", 151},     // Mediatek
+    {"reboot,wdt", 152},      // Mediatek
+    {"reboot,unknown", 153},  // Mediatek
     {"kernel_panic,audit", 154},
     {"kernel_panic,atomic", 155},
     {"kernel_panic,hung", 156},
@@ -304,6 +423,19 @@
     {"reboot,pmic_off_fault,.*", 175},
     {"reboot,pmic_off_s3rst,.*", 176},
     {"reboot,pmic_off_other,.*", 177},
+    {"reboot,userrequested,fastboot", 178},
+    {"reboot,userrequested,recovery", 179},
+    {"reboot,userrequested,recovery,ui", 180},
+    {"shutdown,userrequested,fastboot", 181},
+    {"shutdown,userrequested,recovery", 182},
+    {"reboot,unknown[0-9]*", 183},
+    {"reboot,longkey,.*", 184},
+    {"reboot,boringssl-self-check-failed", 185},
+    {"reboot,userspace_failed,shutdown_aborted", 186},
+    {"reboot,userspace_failed,watchdog_triggered", 187},
+    {"reboot,userspace_failed,watchdog_fork", 188},
+    {"reboot,userspace_failed,*", 189},
+    {"reboot,mount_userdata_failed", 190},
 };
 
 // Converts a string value representing the reason the system booted to an
@@ -738,6 +870,7 @@
 
 const char system_reboot_reason_property[] = "sys.boot.reason";
 const char last_reboot_reason_property[] = LAST_REBOOT_REASON_PROPERTY;
+const char last_reboot_reason_file[] = LAST_REBOOT_REASON_FILE;
 const char last_last_reboot_reason_property[] = "sys.boot.reason.last";
 constexpr size_t history_reboot_reason_size = 4;
 const char history_reboot_reason_property[] = LAST_REBOOT_REASON_PROPERTY ".history";
@@ -832,12 +965,12 @@
     // following table smaller.
     static const std::vector<std::pair<const std::string, const std::string>> aliasReasons = {
         {"watchdog", "wdog"},
-        {"cold,powerkey", "powerkey|power_key|PowerKey"},
         {"kernel_panic", "panic"},
         {"shutdown,thermal", "thermal"},
         {"warm,s3_wakeup", "s3_wakeup"},
         {"hard,hw_reset", "hw_reset"},
-        {"cold,charger", "usb"},
+        {"cold,charger", "usb|power_on_cable"},
+        {"cold,powerkey", "powerkey|power_key|PowerKey|power_on"},
         {"cold,rtc", "rtc"},
         {"cold,rtc,2sec", "2sec_reboot"},
         {"!warm", "wdt_by_pass_pwk"},  // change flavour of blunt
@@ -927,7 +1060,9 @@
     if (isBluntRebootReason(ret)) {
       // Content buffer no longer will have console data. Beware if more
       // checks added below, that depend on parsing console content.
-      content = android::base::GetProperty(last_reboot_reason_property, "");
+      if (!android::base::ReadFileToString(last_reboot_reason_file, &content)) {
+        content = android::base::GetProperty(last_reboot_reason_property, "");
+      }
       transformReason(content);
 
       // Anything in last is better than 'super-blunt' reboot or shutdown.
@@ -1101,14 +1236,28 @@
   // Record the scrubbed system_boot_reason to the property
   BootReasonAddToHistory(system_boot_reason);
   // Shift last_reboot_reason_property to last_last_reboot_reason_property
-  auto last_boot_reason = android::base::GetProperty(last_reboot_reason_property, "");
+  std::string last_boot_reason;
+  if (!android::base::ReadFileToString(last_reboot_reason_file, &last_boot_reason)) {
+    PLOG(ERROR) << "Failed to read " << last_reboot_reason_file;
+    last_boot_reason = android::base::GetProperty(last_reboot_reason_property, "");
+    LOG(INFO) << "Value of " << last_reboot_reason_property << " : " << last_boot_reason;
+  } else {
+    LOG(INFO) << "Last reboot reason read from " << last_reboot_reason_file << " : "
+              << last_boot_reason << ". Last reboot reason read from "
+              << last_reboot_reason_property << " : "
+              << android::base::GetProperty(last_reboot_reason_property, "");
+  }
   if (last_boot_reason.empty() || isKernelRebootReason(system_boot_reason)) {
     last_boot_reason = system_boot_reason;
   } else {
     transformReason(last_boot_reason);
   }
+  LOG(INFO) << "Normalized last reboot reason : " << last_boot_reason;
   android::base::SetProperty(last_last_reboot_reason_property, last_boot_reason);
   android::base::SetProperty(last_reboot_reason_property, "");
+  if (unlink(last_reboot_reason_file) != 0) {
+    PLOG(ERROR) << "Failed to unlink " << last_reboot_reason_file;
+  }
 }
 
 // Gets the boot time offset. This is useful when Android is running in a
@@ -1174,6 +1323,7 @@
   boot_event_store.AddBootEventWithValue(boot_complete_prefix, uptime_s.count());
 
   RecordInitBootTimeProp(&boot_event_store, "ro.boottime.init");
+  RecordInitBootTimeProp(&boot_event_store, "ro.boottime.init.first_stage");
   RecordInitBootTimeProp(&boot_event_store, "ro.boottime.init.selinux");
   RecordInitBootTimeProp(&boot_event_store, "ro.boottime.init.cold_boot_wait");
 
@@ -1198,13 +1348,17 @@
   const auto reason = android::base::GetProperty(bootloader_reboot_reason_property, "");
 
   if (reason.empty()) {
+    // TODO(b/148575354): Replace with statsd.
     // Log an empty boot reason value as '<EMPTY>' to ensure the value is intentional
     // (and not corruption anywhere else in the reporting pipeline).
-    android::metricslogger::LogMultiAction(android::metricslogger::ACTION_BOOT,
-                                           android::metricslogger::FIELD_PLATFORM_REASON, "<EMPTY>");
+    // android::metricslogger::LogMultiAction(android::metricslogger::ACTION_BOOT,
+    //                                        android::metricslogger::FIELD_PLATFORM_REASON,
+    //                                        "<EMPTY>");
   } else {
-    android::metricslogger::LogMultiAction(android::metricslogger::ACTION_BOOT,
-                                           android::metricslogger::FIELD_PLATFORM_REASON, reason);
+    // TODO(b/148575354): Replace with statsd.
+    // android::metricslogger::LogMultiAction(android::metricslogger::ACTION_BOOT,
+    //                                        android::metricslogger::FIELD_PLATFORM_REASON,
+    //                                        reason);
   }
 
   // Log the raw bootloader_boot_reason property value.
@@ -1233,8 +1387,12 @@
 
   if (current_time_utc < 0) {
     // UMA does not display negative values in buckets, so convert to positive.
-    android::metricslogger::LogHistogram("factory_reset_current_time_failure",
-                                         std::abs(current_time_utc));
+    // Logging via BootEventRecordStore.
+    android::util::stats_write(
+        static_cast<int32_t>(android::util::BOOT_TIME_EVENT_ERROR_CODE_REPORTED),
+        static_cast<int32_t>(
+            android::util::BOOT_TIME_EVENT_ERROR_CODE__EVENT__FACTORY_RESET_CURRENT_TIME_FAILURE),
+        static_cast<int32_t>(std::abs(current_time_utc)));
 
     // Logging via BootEventRecordStore to see if using android::metricslogger::LogHistogram
     // is losing records somehow.
@@ -1242,7 +1400,11 @@
                                            std::abs(current_time_utc));
     return;
   } else {
-    android::metricslogger::LogHistogram("factory_reset_current_time", current_time_utc);
+    android::util::stats_write(
+        static_cast<int32_t>(android::util::BOOT_TIME_EVENT_UTC_TIME_REPORTED),
+        static_cast<int32_t>(
+            android::util::BOOT_TIME_EVENT_UTC_TIME__EVENT__FACTORY_RESET_CURRENT_TIME),
+        static_cast<int64_t>(current_time_utc));
 
     // Logging via BootEventRecordStore to see if using android::metricslogger::LogHistogram
     // is losing records somehow.
@@ -1262,7 +1424,11 @@
   // Calculate and record the difference in time between now and the
   // factory_reset time.
   time_t factory_reset_utc = record.second;
-  android::metricslogger::LogHistogram("factory_reset_record_value", factory_reset_utc);
+  android::util::stats_write(
+      static_cast<int32_t>(android::util::BOOT_TIME_EVENT_UTC_TIME_REPORTED),
+      static_cast<int32_t>(
+          android::util::BOOT_TIME_EVENT_UTC_TIME__EVENT__FACTORY_RESET_RECORD_VALUE),
+      static_cast<int64_t>(factory_reset_utc));
 
   // Logging via BootEventRecordStore to see if using android::metricslogger::LogHistogram
   // is losing records somehow.
diff --git a/bootstat/bootstat.rc b/bootstat/bootstat.rc
index 85caf25..a350fe7 100644
--- a/bootstat/bootstat.rc
+++ b/bootstat/bootstat.rc
@@ -50,34 +50,34 @@
 on post-fs-data && property:init.svc.bootanim=running && property:ro.crypto.type=block
     exec_background - system log -- /system/bin/bootstat -r post_decrypt_time_elapsed
 
-# sys.logbootcomplete is a signal to enable the bootstat logging mechanism.
-# This signaling is necessary to prevent logging boot metrics after a runtime
-# restart (e.g., adb shell stop && adb shell start).  /proc/uptime is not reset
-# during a runtime restart, which leads to false boot time metrics being reported.
+# Initialize bootstat state machine.
 #
-# The 'on boot' event occurs once per hard boot (device power on), which
-# switches the flag on. If the device performs a runtime restart, the flag is
-# switched off and cannot be switched on until the device hard boots again.
-
-# Enable bootstat logging on boot.
-on boot
-    setprop sys.logbootcomplete 1
-
-# Disable further bootstat logging on a runtime restart. A runtime restart is
-# signaled by the zygote stopping.
-on property:init.svc.zygote=stopping
-    setprop sys.logbootcomplete 0
+# sys.bootstat.first_boot_completed: responsible for making sure that record_boot_complete happens
+# only once per device hard reboot. Possible values:
+#
+#   sys.bootstat.first_boot_completed=0 - first boot completed trigger wasn't processed yet.
+#   sys.bootstat.first_boot_completed=1 - first boot completed trigger was processed and
+#                                         record_boot_complete was called. Subsequent boot completed
+#                                         triggers (e.g. due to userspace reboot) won't retrigger
+#                                         record_boot_complete
+#
+# IMPORTANT, ro.persistent_properties.ready=1 trigger is used here to ensure that we initialize
+# state machine only once, which as result ensures that bootstat --set_system_boot_reason and
+# bootstat --record_boot_complete will be called only once per full reboot.
+on property:ro.persistent_properties.ready=true
+  setprop sys.bootstat.first_boot_completed 0
 
 # Set boot reason
-on zygote-start
+on property:ro.persistent_properties.ready=true
     # Converts bootloader boot reason and persist.sys.boot.reason to system boot reason
     # Need go after persist peroperties are loaded which is right before zygote-start trigger
     exec_background - system log -- /system/bin/bootstat --set_system_boot_reason
 
 # Record boot complete metrics.
-on property:sys.boot_completed=1 && property:sys.logbootcomplete=1
+on property:sys.boot_completed=1 && property:sys.bootstat.first_boot_completed=0
     # Record boot_complete and related stats (decryption, etc).
     # Record the boot reason.
     # Record time since factory reset.
     # Log all boot events.
     exec_background - system log -- /system/bin/bootstat --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l
+    setprop sys.bootstat.first_boot_completed 1
diff --git a/demangle/.clang-format b/cli-test/.clang-format
similarity index 100%
rename from demangle/.clang-format
rename to cli-test/.clang-format
diff --git a/cli-test/Android.bp b/cli-test/Android.bp
new file mode 100644
index 0000000..37a1d1b
--- /dev/null
+++ b/cli-test/Android.bp
@@ -0,0 +1,7 @@
+cc_binary {
+    name: "cli-test",
+    host_supported: true,
+    srcs: ["cli-test.cpp"],
+    cflags: ["-Wall", "-Werror"],
+    shared_libs: ["libbase"],
+}
diff --git a/cli-test/README.md b/cli-test/README.md
new file mode 100644
index 0000000..643eb74
--- /dev/null
+++ b/cli-test/README.md
@@ -0,0 +1,90 @@
+# cli-test
+
+## What?
+
+`cli-test` makes integration testing of command-line tools easier.
+
+## Goals
+
+* Readable syntax. Common cases should be concise, and pretty much anyone
+  should be able to read tests even if they've never seen this tool before.
+
+* Minimal issues with quoting. The toybox tests -- being shell scripts --
+  quickly become a nightmare of quoting. Using a non ad hoc format (such as
+  JSON) would have introduced similar but different quoting issues. A custom
+  format, while annoying, side-steps this.
+
+* Sensible defaults. We expect your exit status to be 0 unless you say
+  otherwise. We expect nothing on stderr unless you say otherwise. And so on.
+
+* Convention over configuration. Related to sensible defaults, we don't let you
+  configure things that aren't absolutely necessary. So you can't keep your test
+  data anywhere except in the `files/` subdirectory of the directory containing
+  your test, for example.
+
+## Non Goals
+
+* Portability. Just being able to run on Linux (host and device) is sufficient
+  for our needs. macOS is probably easy enough if we ever need it, but Windows
+  probably doesn't make sense.
+
+## Syntax
+
+Any all-whitespace line, or line starting with `#` is ignored.
+
+A test looks like this:
+```
+name: unzip -l
+command: unzip -l $FILES/example.zip d1/d2/x.txt
+after: [ ! -f d1/d2/x.txt ]
+expected-stdout:
+	Archive:  $FILES/example.zip
+	  Length      Date    Time    Name
+	---------  ---------- -----   ----
+	     1024  2017-06-04 08:45   d1/d2/x.txt
+	---------                     -------
+	     1024                     1 file
+---
+```
+
+The `name:` line names the test, and is only for human consumption.
+
+The `command:` line is the command to be run. Additional commands can be
+supplied as zero or more `before:` lines (run before `command:`) and zero or
+more `after:` lines (run after `command:`). These are useful for both
+setup/teardown but also for testing post conditions (as in the example above).
+
+Any `command:`, `before:`, or `after:` line is expected to exit with status 0.
+Anything else is considered a test failure.
+
+The `expected-stdout:` line is followed by zero or more tab-prefixed lines that
+are otherwise the exact output expected from the command. (There's magic behind
+the scenes to rewrite the test files directory to `$FILES` because otherwise any
+path in the output would depend on the temporary directory used to run the test.)
+
+There is currently no `expected-stderr:` line. Standard error is implicitly
+expected to be empty, and any output will cause a test failure. (The support is
+there, but not wired up because we haven't needed it yet.)
+
+The fields can appear in any order, but every test must contain at least a
+`name:` line and a `command:` line.
+
+## Output
+
+The output is intended to resemble gtest.
+
+## Future Directions
+
+* It's often useful to be able to *match* against stdout/stderr/a file rather
+  than give exact expected output. We might want to add explicit support for
+  this. In the meantime, it's possible to use an `after:` with `grep -q` if
+  you redirect in your `command:`.
+
+* In addition to using a `before:` (which will fail a test), it can be useful
+  to be able to specify tests that would cause us to *skip* a test. An example
+  would be "am I running as root?".
+
+* It might be useful to be able to make exit status assertions other than 0?
+
+* There's currently no way (other than the `files/` directory) to share repeated
+  setup between tests.
diff --git a/cli-test/cli-test.cpp b/cli-test/cli-test.cpp
new file mode 100644
index 0000000..d6e27ee
--- /dev/null
+++ b/cli-test/cli-test.cpp
@@ -0,0 +1,320 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <libgen.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <string>
+#include <vector>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <android-base/test_utils.h>
+
+// Example:
+
+// name: unzip -n
+// before: mkdir -p d1/d2
+// before: echo b > d1/d2/a.txt
+// command: unzip -q -n $FILES/zip/example.zip d1/d2/a.txt && cat d1/d2/a.txt
+// expected-stdout:
+// 	b
+
+struct Test {
+  std::string test_filename;
+  std::string name;
+  std::string command;
+  std::vector<std::string> befores;
+  std::vector<std::string> afters;
+  std::string expected_stdout;
+  std::string expected_stderr;
+  int exit_status = 0;
+};
+
+static const char* g_progname;
+static bool g_verbose;
+
+static const char* g_file;
+static size_t g_line;
+
+enum Color { kRed, kGreen };
+
+static void Print(Color c, const char* lhs, const char* fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  if (isatty(0)) printf("%s", (c == kRed) ? "\e[31m" : "\e[32m");
+  printf("%s%s", lhs, isatty(0) ? "\e[0m" : "");
+  vfprintf(stdout, fmt, ap);
+  putchar('\n');
+  va_end(ap);
+}
+
+static void Die(int error, const char* fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  fprintf(stderr, "%s: ", g_progname);
+  vfprintf(stderr, fmt, ap);
+  if (error != 0) fprintf(stderr, ": %s", strerror(error));
+  fprintf(stderr, "\n");
+  va_end(ap);
+  _exit(1);
+}
+
+static void V(const char* fmt, ...) {
+  if (!g_verbose) return;
+
+  va_list ap;
+  va_start(ap, fmt);
+  fprintf(stderr, "           - ");
+  vfprintf(stderr, fmt, ap);
+  fprintf(stderr, "\n");
+  va_end(ap);
+}
+
+static void SetField(const char* what, std::string* field, std::string_view value) {
+  if (!field->empty()) {
+    Die(0, "%s:%zu: %s already set to '%s'", g_file, g_line, what, field->c_str());
+  }
+  field->assign(value);
+}
+
+// Similar to ConsumePrefix, but also trims, so "key:value" and "key: value"
+// are equivalent.
+static bool Match(std::string* s, const std::string& prefix) {
+  if (!android::base::StartsWith(*s, prefix)) return false;
+  s->assign(android::base::Trim(s->substr(prefix.length())));
+  return true;
+}
+
+static void CollectTests(std::vector<Test>* tests, const char* test_filename) {
+  std::string absolute_test_filename;
+  if (!android::base::Realpath(test_filename, &absolute_test_filename)) {
+    Die(errno, "realpath '%s'", test_filename);
+  }
+
+  std::string content;
+  if (!android::base::ReadFileToString(test_filename, &content)) {
+    Die(errno, "couldn't read '%s'", test_filename);
+  }
+
+  size_t count = 0;
+  g_file = test_filename;
+  g_line = 0;
+  auto lines = android::base::Split(content, "\n");
+  std::unique_ptr<Test> test(new Test);
+  while (g_line < lines.size()) {
+    auto line = lines[g_line++];
+    if (line.empty() || line[0] == '#') continue;
+
+    if (line[0] == '-') {
+      if (test->name.empty() || test->command.empty()) {
+        Die(0, "%s:%zu: each test requires both a name and a command", g_file, g_line);
+      }
+      test->test_filename = absolute_test_filename;
+      tests->push_back(*test.release());
+      test.reset(new Test);
+      ++count;
+    } else if (Match(&line, "name:")) {
+      SetField("name", &test->name, line);
+    } else if (Match(&line, "command:")) {
+      SetField("command", &test->command, line);
+    } else if (Match(&line, "before:")) {
+      test->befores.push_back(line);
+    } else if (Match(&line, "after:")) {
+      test->afters.push_back(line);
+    } else if (Match(&line, "expected-stdout:")) {
+      // Collect tab-indented lines.
+      std::string text;
+      while (g_line < lines.size() && !lines[g_line].empty() && lines[g_line][0] == '\t') {
+        text += lines[g_line++].substr(1) + "\n";
+      }
+      SetField("expected stdout", &test->expected_stdout, text);
+    } else {
+      Die(0, "%s:%zu: syntax error: \"%s\"", g_file, g_line, line.c_str());
+    }
+  }
+  if (count == 0) Die(0, "no tests found in '%s'", g_file);
+}
+
+static const char* Plural(size_t n) {
+  return (n == 1) ? "" : "s";
+}
+
+static std::string ExitStatusToString(int status) {
+  if (WIFSIGNALED(status)) {
+    return android::base::StringPrintf("was killed by signal %d (%s)", WTERMSIG(status),
+                                       strsignal(WTERMSIG(status)));
+  }
+  if (WIFSTOPPED(status)) {
+    return android::base::StringPrintf("was stopped by signal %d (%s)", WSTOPSIG(status),
+                                       strsignal(WSTOPSIG(status)));
+  }
+  return android::base::StringPrintf("exited with status %d", WEXITSTATUS(status));
+}
+
+static bool RunCommands(const char* what, const std::vector<std::string>& commands) {
+  bool result = true;
+  for (auto& command : commands) {
+    V("running %s \"%s\"", what, command.c_str());
+    int exit_status = system(command.c_str());
+    if (exit_status != 0) {
+      result = false;
+      fprintf(stderr, "Command (%s) \"%s\" %s\n", what, command.c_str(),
+              ExitStatusToString(exit_status).c_str());
+    }
+  }
+  return result;
+}
+
+static bool CheckOutput(const char* what, std::string actual_output,
+                        const std::string& expected_output, const std::string& FILES) {
+  // Rewrite the output to reverse any expansion of $FILES.
+  actual_output = android::base::StringReplace(actual_output, FILES, "$FILES", true);
+
+  bool result = (actual_output == expected_output);
+  if (!result) {
+    fprintf(stderr, "Incorrect %s.\nExpected:\n%s\nActual:\n%s\n", what, expected_output.c_str(),
+            actual_output.c_str());
+  }
+  return result;
+}
+
+static int RunTests(const std::vector<Test>& tests) {
+  std::vector<std::string> failures;
+
+  Print(kGreen, "[==========]", " Running %zu tests.", tests.size());
+  android::base::Timer total_timer;
+  for (const auto& test : tests) {
+    bool failed = false;
+
+    Print(kGreen, "[ RUN      ]", " %s", test.name.c_str());
+    android::base::Timer test_timer;
+
+    // Set $FILES for this test.
+    std::string FILES = android::base::Dirname(test.test_filename) + "/files";
+    V("setenv(\"FILES\", \"%s\")", FILES.c_str());
+    setenv("FILES", FILES.c_str(), 1);
+
+    // Make a safe space to run the test.
+    TemporaryDir td;
+    V("chdir(\"%s\")", td.path);
+    if (chdir(td.path)) Die(errno, "chdir(\"%s\")", td.path);
+
+    // Perform any setup specified for this test.
+    if (!RunCommands("before", test.befores)) failed = true;
+
+    if (!failed) {
+      V("running command \"%s\"", test.command.c_str());
+      CapturedStdout test_stdout;
+      CapturedStderr test_stderr;
+      int exit_status = system(test.command.c_str());
+      test_stdout.Stop();
+      test_stderr.Stop();
+
+      V("exit status %d", exit_status);
+      if (exit_status != test.exit_status) {
+        failed = true;
+        fprintf(stderr, "Incorrect exit status: expected %d but %s\n", test.exit_status,
+                ExitStatusToString(exit_status).c_str());
+      }
+
+      if (!CheckOutput("stdout", test_stdout.str(), test.expected_stdout, FILES)) failed = true;
+      if (!CheckOutput("stderr", test_stderr.str(), test.expected_stderr, FILES)) failed = true;
+
+      if (!RunCommands("after", test.afters)) failed = true;
+    }
+
+    std::stringstream duration;
+    duration << test_timer;
+    if (failed) {
+      failures.push_back(test.name);
+      Print(kRed, "[  FAILED  ]", " %s (%s)", test.name.c_str(), duration.str().c_str());
+    } else {
+      Print(kGreen, "[       OK ]", " %s (%s)", test.name.c_str(), duration.str().c_str());
+    }
+  }
+
+  // Summarize the whole run and explicitly list all the failures.
+
+  std::stringstream duration;
+  duration << total_timer;
+  Print(kGreen, "[==========]", " %zu tests ran. (%s total)", tests.size(), duration.str().c_str());
+
+  size_t fail_count = failures.size();
+  size_t pass_count = tests.size() - fail_count;
+  Print(kGreen, "[  PASSED  ]", " %zu test%s.", pass_count, Plural(pass_count));
+  if (!failures.empty()) {
+    Print(kRed, "[  FAILED  ]", " %zu test%s.", fail_count, Plural(fail_count));
+    for (auto& failure : failures) {
+      Print(kRed, "[  FAILED  ]", " %s", failure.c_str());
+    }
+  }
+  return (fail_count == 0) ? 0 : 1;
+}
+
+static void ShowHelp(bool full) {
+  fprintf(full ? stdout : stderr, "usage: %s [-v] FILE...\n", g_progname);
+  if (!full) exit(EXIT_FAILURE);
+
+  printf(
+      "\n"
+      "Run tests.\n"
+      "\n"
+      "-v\tVerbose (show workings)\n");
+  exit(EXIT_SUCCESS);
+}
+
+int main(int argc, char* argv[]) {
+  g_progname = basename(argv[0]);
+
+  static const struct option opts[] = {
+      {"help", no_argument, 0, 'h'},
+      {"verbose", no_argument, 0, 'v'},
+      {},
+  };
+
+  int opt;
+  while ((opt = getopt_long(argc, argv, "hv", opts, nullptr)) != -1) {
+    switch (opt) {
+      case 'h':
+        ShowHelp(true);
+        break;
+      case 'v':
+        g_verbose = true;
+        break;
+      default:
+        ShowHelp(false);
+        break;
+    }
+  }
+
+  argv += optind;
+  if (!*argv) Die(0, "no test files provided");
+  std::vector<Test> tests;
+  for (; *argv; ++argv) CollectTests(&tests, *argv);
+  return RunTests(tests);
+}
diff --git a/code_coverage/Android.bp b/code_coverage/Android.bp
new file mode 100644
index 0000000..b51c802
--- /dev/null
+++ b/code_coverage/Android.bp
@@ -0,0 +1,83 @@
+
+prebuilt_etc {
+    name: "code_coverage.policy",
+    sub_dir: "seccomp_policy",
+    filename_from_src: true,
+    arch: {
+        arm: {
+            src: "empty_policy/code_coverage.arm.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.arm.policy",
+                },
+            },
+        },
+        arm64: {
+            src: "empty_policy/code_coverage.arm64.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.arm64.policy",
+                },
+            },
+        },
+        x86: {
+            src: "empty_policy/code_coverage.x86.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.x86.policy",
+                },
+            },
+        },
+        x86_64: {
+            src: "empty_policy/code_coverage.x86_64.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.x86_64.policy",
+                },
+            },
+        },
+    },
+    required: [
+        "code_coverage.policy.other",
+    ],
+}
+
+prebuilt_etc {
+    name: "code_coverage.policy.other",
+    sub_dir: "seccomp_policy",
+    filename_from_src: true,
+    arch: {
+        arm: {
+            src: "empty_policy/code_coverage.arm64.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.arm64.policy",
+                },
+            },
+        },
+        arm64: {
+            src: "empty_policy/code_coverage.arm.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.arm.policy",
+                },
+            },
+        },
+        x86: {
+            src: "empty_policy/code_coverage.x86_64.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.x86_64.policy",
+                },
+            },
+        },
+        x86_64: {
+            src: "empty_policy/code_coverage.x86.policy",
+            product_variables: {
+                native_coverage: {
+                    src: "seccomp_policy/code_coverage.x86.policy",
+                },
+            },
+        },
+    },
+}
diff --git a/code_coverage/Android.mk b/code_coverage/Android.mk
deleted file mode 100644
index 80ab36b..0000000
--- a/code_coverage/Android.mk
+++ /dev/null
@@ -1,37 +0,0 @@
-# policies to allow processes inside minijail to dump code coverage information
-#
-
-LOCAL_PATH := $(call my-dir)
-
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := code_coverage.policy
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MULTILIB := both
-
-ifeq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), arm arm64))
-LOCAL_MODULE_STEM_32 := code_coverage.arm.policy
-LOCAL_MODULE_STEM_64 := code_coverage.arm64.policy
-endif
-
-ifeq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), x86 x86_64))
-LOCAL_MODULE_STEM_32 := code_coverage.x86.policy
-LOCAL_MODULE_STEM_64 := code_coverage.x86_64.policy
-endif
-
-# different files for different configurations
-ifeq ($(NATIVE_COVERAGE),true)
-LOCAL_SRC_FILES_arm := seccomp_policy/code_coverage.arm.policy
-LOCAL_SRC_FILES_arm64 := seccomp_policy/code_coverage.arm64.policy
-LOCAL_SRC_FILES_x86 := seccomp_policy/code_coverage.x86.policy
-LOCAL_SRC_FILES_x86_64 := seccomp_policy/code_coverage.x86_64.policy
-else
-LOCAL_SRC_FILES_arm := empty_policy/code_coverage.arm.policy
-LOCAL_SRC_FILES_arm64 := empty_policy/code_coverage.arm64.policy
-LOCAL_SRC_FILES_x86 := empty_policy/code_coverage.x86.policy
-LOCAL_SRC_FILES_x86_64 := empty_policy/code_coverage.x86_64.policy
-endif
-
-LOCAL_MODULE_TARGET_ARCH := arm arm64 x86 x86_64
-LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/seccomp_policy
-include $(BUILD_PREBUILT)
diff --git a/code_coverage/seccomp_policy/code_coverage.arm.policy b/code_coverage/seccomp_policy/code_coverage.arm.policy
index d6784e3..b80910f 100644
--- a/code_coverage/seccomp_policy/code_coverage.arm.policy
+++ b/code_coverage/seccomp_policy/code_coverage.arm.policy
@@ -6,6 +6,7 @@
 write: 1
 fcntl64: 1
 fstat64: 1
+ftruncate64: 1
 geteuid32: 1
 _llseek: 1
 mmap2: 1
diff --git a/code_coverage/seccomp_policy/code_coverage.arm64.policy b/code_coverage/seccomp_policy/code_coverage.arm64.policy
index 4c3dd26..7040ea2 100644
--- a/code_coverage/seccomp_policy/code_coverage.arm64.policy
+++ b/code_coverage/seccomp_policy/code_coverage.arm64.policy
@@ -6,6 +6,7 @@
 write: 1
 fcntl: 1
 fstat: 1
+ftruncate: 1
 geteuid: 1
 lseek: 1
 mmap: 1
diff --git a/code_coverage/seccomp_policy/code_coverage.policy.def b/code_coverage/seccomp_policy/code_coverage.policy.def
index f136084..599c4a4 100644
--- a/code_coverage/seccomp_policy/code_coverage.policy.def
+++ b/code_coverage/seccomp_policy/code_coverage.policy.def
@@ -22,6 +22,7 @@
 #if     defined(__LP64__)
 fcntl: 1
 fstat: 1
+ftruncate: 1
 geteuid: 1
 lseek: 1
 mmap: 1
@@ -29,6 +30,7 @@
 #else
 fcntl64: 1
 fstat64: 1
+ftruncate64: 1
 geteuid32: 1
 _llseek: 1
 mmap2: 1
diff --git a/code_coverage/seccomp_policy/code_coverage.x86.policy b/code_coverage/seccomp_policy/code_coverage.x86.policy
index 24ff8b9..f8e0cc0 100644
--- a/code_coverage/seccomp_policy/code_coverage.x86.policy
+++ b/code_coverage/seccomp_policy/code_coverage.x86.policy
@@ -6,6 +6,7 @@
 write: 1
 fcntl64: 1
 fstat64: 1
+ftruncate64: 1
 geteuid32: 1
 _llseek: 1
 mmap2: 1
diff --git a/code_coverage/seccomp_policy/code_coverage.x86_64.policy b/code_coverage/seccomp_policy/code_coverage.x86_64.policy
index 3081036..dcf2f9a 100644
--- a/code_coverage/seccomp_policy/code_coverage.x86_64.policy
+++ b/code_coverage/seccomp_policy/code_coverage.x86_64.policy
@@ -6,6 +6,7 @@
 write: 1
 fcntl: 1
 fstat: 1
+ftruncate: 1
 geteuid: 1
 lseek: 1
 mmap: 1
diff --git a/debuggerd/Android.bp b/debuggerd/Android.bp
index 2e226da..c7bd1a8 100644
--- a/debuggerd/Android.bp
+++ b/debuggerd/Android.bp
@@ -74,6 +74,7 @@
     header_libs: [
         "libbase_headers",
         "libdebuggerd_common_headers",
+        "bionic_libc_platform_headers",
     ],
 
     whole_static_libs: [
@@ -92,6 +93,9 @@
     defaults: ["debuggerd_defaults"],
     srcs: ["handler/debuggerd_fallback_nop.cpp"],
 
+    header_libs: ["bionic_libc_platform_headers"],
+    export_header_lib_headers: ["bionic_libc_platform_headers"],
+
     whole_static_libs: [
         "libdebuggerd_handler_core",
     ],
@@ -99,9 +103,14 @@
     export_include_dirs: ["include"],
 }
 
-// Fallback implementation.
+// Fallback implementation, for use in the Bionic linker only.
 cc_library_static {
     name: "libdebuggerd_handler_fallback",
+    visibility: ["//bionic/linker"],
+    apex_available: [
+        "com.android.runtime",
+        "//apex_available:platform",
+    ],
     defaults: ["debuggerd_defaults"],
     recovery_available: true,
     srcs: [
@@ -114,18 +123,13 @@
         "libasync_safe",
         "libbase",
         "libdebuggerd",
-        "libunwindstack",
-        "libdexfile_support_static",  // libunwindstack dependency
+        "libunwindstack_no_dex",
         "liblzma",
         "libcutils",
     ],
-    target: {
-        recovery: {
-            exclude_static_libs: [
-                "libdexfile_support_static",
-            ],
-        },
-    },
+
+    header_libs: ["bionic_libc_platform_headers"],
+    export_header_lib_headers: ["bionic_libc_platform_headers"],
 
     export_include_dirs: ["include"],
 }
@@ -138,15 +142,21 @@
         "util.cpp",
     ],
 
-    header_libs: ["libdebuggerd_common_headers"],
-
     shared_libs: [
         "libbase",
         "libcutils",
         "libprocinfo",
     ],
 
-    export_header_lib_headers: ["libdebuggerd_common_headers"],
+    header_libs: [
+        "libdebuggerd_common_headers",
+        "bionic_libc_platform_headers",
+    ],
+    export_header_lib_headers: [
+        "libdebuggerd_common_headers",
+        "bionic_libc_platform_headers",
+    ],
+
     export_include_dirs: ["include"],
 }
 
@@ -157,6 +167,7 @@
 
     srcs: [
         "libdebuggerd/backtrace.cpp",
+        "libdebuggerd/gwp_asan.cpp",
         "libdebuggerd/open_files_list.cpp",
         "libdebuggerd/tombstone.cpp",
         "libdebuggerd/utility.cpp",
@@ -167,19 +178,26 @@
 
     // Needed for private/bionic_fdsan.h
     include_dirs: ["bionic/libc"],
+    header_libs: [
+        "bionic_libc_platform_headers",
+        "gwp_asan_headers",
+    ],
 
     static_libs: [
-        "libdexfile_support_static",  // libunwindstack dependency
+        "libdexfile_support",  // libunwindstack dependency
         "libunwindstack",
         "liblzma",
         "libbase",
         "libcutils",
         "liblog",
     ],
+
+    whole_static_libs: ["gwp_asan_crash_handler"],
+
     target: {
         recovery: {
             exclude_static_libs: [
-                "libdexfile_support_static",
+                "libdexfile_support",
             ],
         },
     },
@@ -194,6 +212,7 @@
 cc_test {
     name: "debuggerd_test",
     defaults: ["debuggerd_defaults"],
+    require_root: true,
 
     cflags: ["-Wno-missing-field-initializers"],
     srcs: [
@@ -229,6 +248,12 @@
 
     static_libs: [
         "libdebuggerd",
+        "libgmock",
+    ],
+
+    header_libs: [
+        "bionic_libc_platform_headers",
+        "gwp_asan_headers",
     ],
 
     local_include_dirs: [
@@ -276,6 +301,10 @@
         },
     },
 
+    header_libs: [
+        "bionic_libc_platform_headers",
+    ],
+
     static_libs: [
         "libtombstoned_client_static",
         "libdebuggerd",
@@ -316,7 +345,10 @@
     ],
     defaults: ["debuggerd_defaults"],
 
-    header_libs: ["libdebuggerd_common_headers"],
+    header_libs: [
+        "bionic_libc_platform_headers",
+        "libdebuggerd_common_headers"
+    ],
 
     static_libs: [
         "libbase",
@@ -328,6 +360,48 @@
     init_rc: ["tombstoned/tombstoned.rc"],
 }
 
-subdirs = [
-    "crasher",
-]
+prebuilt_etc {
+    name: "crash_dump.policy",
+    sub_dir: "seccomp_policy",
+    filename_from_src: true,
+    arch: {
+        arm: {
+            src: "seccomp_policy/crash_dump.arm.policy",
+        },
+        arm64: {
+            src: "seccomp_policy/crash_dump.arm64.policy",
+        },
+        x86: {
+            src: "seccomp_policy/crash_dump.x86.policy",
+        },
+        x86_64: {
+            src: "seccomp_policy/crash_dump.x86_64.policy",
+        },
+    },
+    required: [
+        "crash_dump.policy_other",
+    ],
+}
+
+
+// NB -- this installs "the other" architecture. (puts 32 bit config in on 64 bit device)
+// or at least that is the intention so that we get both of them populated
+prebuilt_etc {
+    name: "crash_dump.policy_other",
+    sub_dir: "seccomp_policy",
+    filename_from_src: true,
+    arch: {
+        arm: {
+            src: "seccomp_policy/crash_dump.arm64.policy",
+        },
+        arm64: {
+            src: "seccomp_policy/crash_dump.arm.policy",
+        },
+        x86: {
+            src: "seccomp_policy/crash_dump.x86_64.policy",
+        },
+        x86_64: {
+            src: "seccomp_policy/crash_dump.x86.policy",
+        },
+    },
+}
diff --git a/debuggerd/Android.mk b/debuggerd/Android.mk
deleted file mode 100644
index c03b41d..0000000
--- a/debuggerd/Android.mk
+++ /dev/null
@@ -1,24 +0,0 @@
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := crash_dump.policy
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MULTILIB := both
-
-ifeq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), arm arm64))
-LOCAL_MODULE_STEM_32 := crash_dump.arm.policy
-LOCAL_MODULE_STEM_64 := crash_dump.arm64.policy
-endif
-
-ifeq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), x86 x86_64))
-LOCAL_MODULE_STEM_32 := crash_dump.x86.policy
-LOCAL_MODULE_STEM_64 := crash_dump.x86_64.policy
-endif
-
-LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/seccomp_policy
-LOCAL_SRC_FILES_arm := seccomp_policy/crash_dump.arm.policy
-LOCAL_SRC_FILES_arm64 := seccomp_policy/crash_dump.arm64.policy
-LOCAL_SRC_FILES_x86 := seccomp_policy/crash_dump.x86.policy
-LOCAL_SRC_FILES_x86_64 := seccomp_policy/crash_dump.x86_64.policy
-LOCAL_MODULE_TARGET_ARCH := arm arm64 x86 x86_64
-include $(BUILD_PREBUILT)
diff --git a/debuggerd/client/debuggerd_client.cpp b/debuggerd/client/debuggerd_client.cpp
index 60eb241..5c02738 100644
--- a/debuggerd/client/debuggerd_client.cpp
+++ b/debuggerd/client/debuggerd_client.cpp
@@ -22,9 +22,11 @@
 #include <sys/poll.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <time.h>
 #include <unistd.h>
 
 #include <chrono>
+#include <iomanip>
 
 #include <android-base/cmsg.h>
 #include <android-base/file.h>
@@ -33,6 +35,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
+#include <bionic/reserved_signals.h>
 #include <cutils/sockets.h>
 #include <procinfo/process.h>
 
@@ -42,11 +45,13 @@
 
 using namespace std::chrono_literals;
 
+using android::base::ReadFileToString;
 using android::base::SendFileDescriptors;
 using android::base::unique_fd;
+using android::base::WriteStringToFd;
 
 static bool send_signal(pid_t pid, const DebuggerdDumpType dump_type) {
-  const int signal = (dump_type == kDebuggerdJavaBacktrace) ? SIGQUIT : DEBUGGER_SIGNAL;
+  const int signal = (dump_type == kDebuggerdJavaBacktrace) ? SIGQUIT : BIONIC_SIGNAL_DEBUGGER;
   sigval val;
   val.sival_int = (dump_type == kDebuggerdNativeBacktrace) ? 1 : 0;
 
@@ -65,6 +70,76 @@
   tv->tv_usec = static_cast<long>(microseconds.count());
 }
 
+static void get_wchan_header(pid_t pid, std::stringstream& buffer) {
+  struct tm now;
+  time_t t = time(nullptr);
+  localtime_r(&t, &now);
+  char timestamp[32];
+  strftime(timestamp, sizeof(timestamp), "%Y-%m-%d %H:%M:%S", &now);
+  std::string time_now(timestamp);
+
+  std::string path = "/proc/" + std::to_string(pid) + "/cmdline";
+
+  char proc_name_buf[1024];
+  const char* proc_name = nullptr;
+  std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(path.c_str(), "r"), &fclose);
+
+  if (fp) {
+    proc_name = fgets(proc_name_buf, sizeof(proc_name_buf), fp.get());
+  }
+
+  if (!proc_name) {
+    proc_name = "<unknown>";
+  }
+
+  buffer << "\n----- Waiting Channels: pid " << pid << " at " << time_now << " -----\n"
+         << "Cmd line: " << proc_name << "\n";
+}
+
+static void get_wchan_footer(pid_t pid, std::stringstream& buffer) {
+  buffer << "----- end " << std::to_string(pid) << " -----\n";
+}
+
+/**
+ * Returns the wchan data for each thread in the process,
+ * or empty string if unable to obtain any data.
+ */
+static std::string get_wchan_data(pid_t pid) {
+  std::stringstream buffer;
+  std::vector<pid_t> tids;
+
+  if (!android::procinfo::GetProcessTids(pid, &tids)) {
+    LOG(WARNING) << "libdebuggerd_client: Failed to get process tids";
+    return buffer.str();
+  }
+
+  std::stringstream data;
+  for (int tid : tids) {
+    std::string path = "/proc/" + std::to_string(pid) + "/task/" + std::to_string(tid) + "/wchan";
+    std::string wchan_str;
+    if (!ReadFileToString(path, &wchan_str, true)) {
+      PLOG(WARNING) << "libdebuggerd_client: Failed to read \"" << path << "\"";
+      continue;
+    }
+    data << "sysTid=" << std::left << std::setw(10) << tid << wchan_str << "\n";
+  }
+
+  if (std::string str = data.str(); !str.empty()) {
+    get_wchan_header(pid, buffer);
+    buffer << "\n" << str << "\n";
+    get_wchan_footer(pid, buffer);
+    buffer << "\n";
+  }
+
+  return buffer.str();
+}
+
+static void dump_wchan_data(const std::string& data, int fd, pid_t pid) {
+  if (!WriteStringToFd(data, fd)) {
+    LOG(WARNING) << "libdebuggerd_client: Failed to dump wchan data for pid: " << pid;
+  }
+}
+
 bool debuggerd_trigger_dump(pid_t tid, DebuggerdDumpType dump_type, unsigned int timeout_ms,
                             unique_fd output_fd) {
   pid_t pid = tid;
@@ -121,7 +196,10 @@
     return false;
   }
 
-  InterceptRequest req = {.pid = pid, .dump_type = dump_type};
+  InterceptRequest req = {
+      .dump_type = dump_type,
+      .pid = pid,
+  };
   if (!set_timeout(sockfd)) {
     PLOG(ERROR) << "libdebugger_client: failed to set timeout";
     return false;
@@ -261,6 +339,17 @@
   if (copy == -1) {
     return -1;
   }
+
+  // debuggerd_trigger_dump results in every thread in the process being interrupted
+  // by a signal, so we need to fetch the wchan data before calling that.
+  std::string wchan_data = get_wchan_data(tid);
+
   int timeout_ms = timeout_secs > 0 ? timeout_secs * 1000 : 0;
-  return debuggerd_trigger_dump(tid, dump_type, timeout_ms, std::move(copy)) ? 0 : -1;
+  int ret = debuggerd_trigger_dump(tid, dump_type, timeout_ms, std::move(copy)) ? 0 : -1;
+
+  // Dump wchan data, since only privileged processes (CAP_SYS_ADMIN) can read
+  // kernel stack traces (/proc/*/stack).
+  dump_wchan_data(wchan_data, fd, tid);
+
+  return ret;
 }
diff --git a/debuggerd/client/debuggerd_client_test.cpp b/debuggerd/client/debuggerd_client_test.cpp
index 9c2f0d6..ebb8d86 100644
--- a/debuggerd/client/debuggerd_client_test.cpp
+++ b/debuggerd/client/debuggerd_client_test.cpp
@@ -73,15 +73,15 @@
   unique_fd pipe_read, pipe_write;
   ASSERT_TRUE(Pipe(&pipe_read, &pipe_write));
 
-  // 64 kB should be enough for everyone.
-  constexpr int PIPE_SIZE = 64 * 1024 * 1024;
+  // 16 MiB should be enough for everyone.
+  constexpr int PIPE_SIZE = 16 * 1024 * 1024;
   ASSERT_EQ(PIPE_SIZE, fcntl(pipe_read.get(), F_SETPIPE_SZ, PIPE_SIZE));
 
   // Wait for a bit to let the child spawn all of its threads.
-  std::this_thread::sleep_for(250ms);
+  std::this_thread::sleep_for(1s);
 
   ASSERT_TRUE(
-      debuggerd_trigger_dump(forkpid, kDebuggerdNativeBacktrace, 10000, std::move(pipe_write)));
+      debuggerd_trigger_dump(forkpid, kDebuggerdNativeBacktrace, 60000, std::move(pipe_write)));
   // Immediately kill the forked child, to make sure that the dump didn't return early.
   ASSERT_EQ(0, kill(forkpid, SIGKILL)) << strerror(errno);
 
diff --git a/debuggerd/crash_dump.cpp b/debuggerd/crash_dump.cpp
index cb55745..3e99880 100644
--- a/debuggerd/crash_dump.cpp
+++ b/debuggerd/crash_dump.cpp
@@ -40,6 +40,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
+#include <bionic/reserved_signals.h>
 #include <cutils/sockets.h>
 #include <log/log.h>
 #include <private/android_filesystem_config.h>
@@ -254,7 +255,8 @@
 
 static void ReadCrashInfo(unique_fd& fd, siginfo_t* siginfo,
                           std::unique_ptr<unwindstack::Regs>* regs, uintptr_t* abort_msg_address,
-                          uintptr_t* fdsan_table_address) {
+                          uintptr_t* fdsan_table_address, uintptr_t* gwp_asan_state,
+                          uintptr_t* gwp_asan_metadata) {
   std::aligned_storage<sizeof(CrashInfo) + 1, alignof(CrashInfo)>::type buf;
   CrashInfo* crash_info = reinterpret_cast<CrashInfo*>(&buf);
   ssize_t rc = TEMP_FAILURE_RETRY(read(fd.get(), &buf, sizeof(buf)));
@@ -271,6 +273,10 @@
         expected_size = sizeof(CrashInfoHeader) + sizeof(CrashInfoDataV2);
         break;
 
+      case 3:
+        expected_size = sizeof(CrashInfoHeader) + sizeof(CrashInfoDataV3);
+        break;
+
       default:
         LOG(FATAL) << "unexpected CrashInfo version: " << crash_info->header.version;
         break;
@@ -283,7 +289,13 @@
   }
 
   *fdsan_table_address = 0;
+  *gwp_asan_state = 0;
+  *gwp_asan_metadata = 0;
   switch (crash_info->header.version) {
+    case 3:
+      *gwp_asan_state = crash_info->data.v3.gwp_asan_state;
+      *gwp_asan_metadata = crash_info->data.v3.gwp_asan_metadata;
+      FALLTHROUGH_INTENDED;
     case 2:
       *fdsan_table_address = crash_info->data.v2.fdsan_table_address;
       FALLTHROUGH_INTENDED;
@@ -415,6 +427,8 @@
   DebuggerdDumpType dump_type;
   uintptr_t abort_msg_address = 0;
   uintptr_t fdsan_table_address = 0;
+  uintptr_t gwp_asan_state = 0;
+  uintptr_t gwp_asan_metadata = 0;
 
   Initialize(argv);
   ParseArgs(argc, argv, &pseudothread_tid, &dump_type);
@@ -476,7 +490,7 @@
       if (thread == g_target_thread) {
         // Read the thread's registers along with the rest of the crash info out of the pipe.
         ReadCrashInfo(input_pipe, &siginfo, &info.registers, &abort_msg_address,
-                      &fdsan_table_address);
+                      &fdsan_table_address, &gwp_asan_state, &gwp_asan_metadata);
         info.siginfo = &siginfo;
         info.signo = info.siginfo->si_signo;
       } else {
@@ -511,13 +525,13 @@
 
   // Defer the message until later, for readability.
   bool wait_for_gdb = android::base::GetBoolProperty("debug.debuggerd.wait_for_gdb", false);
-  if (siginfo.si_signo == DEBUGGER_SIGNAL) {
+  if (siginfo.si_signo == BIONIC_SIGNAL_DEBUGGER) {
     wait_for_gdb = false;
   }
 
   // Detach from all of our attached threads before resuming.
   for (const auto& [tid, thread] : thread_info) {
-    int resume_signal = thread.signo == DEBUGGER_SIGNAL ? 0 : thread.signo;
+    int resume_signal = thread.signo == BIONIC_SIGNAL_DEBUGGER ? 0 : thread.signo;
     if (wait_for_gdb) {
       resume_signal = 0;
       if (tgkill(target_process, tid, SIGSTOP) != 0) {
@@ -555,10 +569,10 @@
             << " (target tid = " << g_target_thread << ")";
 
   int signo = siginfo.si_signo;
-  bool fatal_signal = signo != DEBUGGER_SIGNAL;
+  bool fatal_signal = signo != BIONIC_SIGNAL_DEBUGGER;
   bool backtrace = false;
 
-  // si_value is special when used with DEBUGGER_SIGNAL.
+  // si_value is special when used with BIONIC_SIGNAL_DEBUGGER.
   //   0: dump tombstone
   //   1: dump backtrace
   if (!fatal_signal) {
@@ -591,7 +605,8 @@
     {
       ATRACE_NAME("engrave_tombstone");
       engrave_tombstone(std::move(g_output_fd), &unwinder, thread_info, g_target_thread,
-                        abort_msg_address, &open_files, &amfd_data);
+                        abort_msg_address, &open_files, &amfd_data, gwp_asan_state,
+                        gwp_asan_metadata);
     }
   }
 
diff --git a/debuggerd/crasher/Android.bp b/debuggerd/crasher/Android.bp
index 7bec470..e86f499 100644
--- a/debuggerd/crasher/Android.bp
+++ b/debuggerd/crasher/Android.bp
@@ -44,6 +44,7 @@
     name: "crasher",
 
     defaults: ["crasher-defaults"],
+    header_libs: ["bionic_libc_platform_headers"],
     shared_libs: [
         "libbase",
         "liblog",
@@ -65,6 +66,7 @@
     defaults: ["crasher-defaults"],
     cppflags: ["-DSTATIC_CRASHER"],
     static_executable: true,
+    header_libs: ["bionic_libc_platform_headers"],
     static_libs: [
         "libdebuggerd_handler",
         "libbase",
diff --git a/debuggerd/crasher/crasher.cpp b/debuggerd/crasher/crasher.cpp
index f0bdfbf..3041664 100644
--- a/debuggerd/crasher/crasher.cpp
+++ b/debuggerd/crasher/crasher.cpp
@@ -193,6 +193,7 @@
     fprintf(stderr, "  kuser_memory_barrier  call kuser_memory_barrier\n");
     fprintf(stderr, "  kuser_cmpxchg64       call kuser_cmpxchg64\n");
 #endif
+    fprintf(stderr, "  xom                   read execute-only memory\n");
     fprintf(stderr, "\n");
     fprintf(stderr, "  LOG_ALWAYS_FATAL      call liblog LOG_ALWAYS_FATAL\n");
     fprintf(stderr, "  LOG_ALWAYS_FATAL_IF   call liblog LOG_ALWAYS_FATAL_IF\n");
@@ -314,6 +315,11 @@
     } else if (!strcasecmp(arg, "seccomp")) {
       set_system_seccomp_filter();
       syscall(99999);
+#if defined(__LP64__)
+    } else if (!strcasecmp(arg, "xom")) {
+      // Try to read part of our code, which will fail if XOM is active.
+      printf("*%lx = %lx\n", reinterpret_cast<long>(usage), *reinterpret_cast<long*>(usage));
+#endif
 #if defined(__arm__)
     } else if (!strcasecmp(arg, "kuser_helper_version")) {
         return __kuser_helper_version;
diff --git a/debuggerd/debuggerd_test.cpp b/debuggerd/debuggerd_test.cpp
index 1f249c5..6a8cc56 100644
--- a/debuggerd/debuggerd_test.cpp
+++ b/debuggerd/debuggerd_test.cpp
@@ -31,6 +31,7 @@
 
 #include <android/fdsan.h>
 #include <android/set_abort_message.h>
+#include <bionic/reserved_signals.h>
 
 #include <android-base/cmsg.h>
 #include <android-base/file.h>
@@ -101,7 +102,10 @@
     FAIL() << "failed to contact tombstoned: " << strerror(errno);
   }
 
-  InterceptRequest req = {.pid = target_pid, .dump_type = intercept_type};
+  InterceptRequest req = {
+      .dump_type = intercept_type,
+      .pid = target_pid,
+  };
 
   unique_fd output_pipe_write;
   if (!Pipe(output_fd, &output_pipe_write)) {
@@ -395,7 +399,7 @@
   unique_fd output_fd;
   StartProcess([]() {
     android_set_abort_message("not actually aborting");
-    raise(DEBUGGER_SIGNAL);
+    raise(BIONIC_SIGNAL_DEBUGGER);
     exit(0);
   });
   StartIntercept(&output_fd);
@@ -463,7 +467,7 @@
 
   sigval val;
   val.sival_int = 1;
-  ASSERT_EQ(0, sigqueue(crasher_pid, DEBUGGER_SIGNAL, val)) << strerror(errno);
+  ASSERT_EQ(0, sigqueue(crasher_pid, BIONIC_SIGNAL_DEBUGGER, val)) << strerror(errno);
   FinishIntercept(&intercept_result);
   ASSERT_EQ(1, intercept_result) << "tombstoned reported failure";
   ConsumeFd(std::move(output_fd), &result);
@@ -602,6 +606,8 @@
   policy += "\nclone: 1";
   policy += "\nsigaltstack: 1";
   policy += "\nnanosleep: 1";
+  policy += "\ngetrlimit: 1";
+  policy += "\nugetrlimit: 1";
 
   FILE* tmp_file = tmpfile();
   if (!tmp_file) {
@@ -729,7 +735,7 @@
 
   siginfo.si_value.sival_int = dump_type == kDebuggerdNativeBacktrace;
 
-  if (syscall(__NR_rt_tgsigqueueinfo, getpid(), gettid(), DEBUGGER_SIGNAL, &siginfo) != 0) {
+  if (syscall(__NR_rt_tgsigqueueinfo, getpid(), gettid(), BIONIC_SIGNAL_DEBUGGER, &siginfo) != 0) {
     PLOG(ERROR) << "libdebuggerd_client: failed to send signal to self";
     return false;
   }
@@ -882,7 +888,7 @@
       errx(2, "first waitpid returned %d (%s), expected failure with ECHILD", rc, strerror(errno));
     }
 
-    raise(DEBUGGER_SIGNAL);
+    raise(BIONIC_SIGNAL_DEBUGGER);
 
     errno = 0;
     rc = TEMP_FAILURE_RETRY(waitpid(-1, &status, __WALL | __WNOTHREAD));
@@ -1098,3 +1104,30 @@
   // This should be good enough, though...
   ASSERT_LT(diff, 10) << "too many new tombstones; is something crashing in the background?";
 }
+
+static __attribute__((__noinline__)) void overflow_stack(void* p) {
+  void* buf[1];
+  buf[0] = p;
+  static volatile void* global = buf;
+  if (global) {
+    global = buf;
+    overflow_stack(&buf);
+  }
+}
+
+TEST_F(CrasherTest, stack_overflow) {
+  int intercept_result;
+  unique_fd output_fd;
+  StartProcess([]() { overflow_stack(nullptr); });
+
+  StartIntercept(&output_fd);
+  FinishCrasher();
+  AssertDeath(SIGSEGV);
+  FinishIntercept(&intercept_result);
+
+  ASSERT_EQ(1, intercept_result) << "tombstoned reported failure";
+
+  std::string result;
+  ConsumeFd(std::move(output_fd), &result);
+  ASSERT_MATCH(result, R"(Cause: stack pointer[^\n]*stack overflow.\n)");
+}
diff --git a/debuggerd/handler/debuggerd_fallback.cpp b/debuggerd/handler/debuggerd_fallback.cpp
index bbec612..9bcbdb3 100644
--- a/debuggerd/handler/debuggerd_fallback.cpp
+++ b/debuggerd/handler/debuggerd_fallback.cpp
@@ -42,6 +42,7 @@
 #include <android-base/file.h>
 #include <android-base/unique_fd.h>
 #include <async_safe/log.h>
+#include <bionic/reserved_signals.h>
 #include <unwindstack/DexFiles.h>
 #include <unwindstack/JitDebug.h>
 #include <unwindstack/Maps.h>
@@ -272,7 +273,7 @@
         siginfo.si_pid = getpid();
         siginfo.si_uid = getuid();
 
-        if (syscall(__NR_rt_tgsigqueueinfo, getpid(), tid, DEBUGGER_SIGNAL, &siginfo) != 0) {
+        if (syscall(__NR_rt_tgsigqueueinfo, getpid(), tid, BIONIC_SIGNAL_DEBUGGER, &siginfo) != 0) {
           async_safe_format_log(ANDROID_LOG_ERROR, "libc", "failed to send trace signal to %d: %s",
                                 tid, strerror(errno));
           return false;
@@ -340,7 +341,7 @@
 
 extern "C" void debuggerd_fallback_handler(siginfo_t* info, ucontext_t* ucontext,
                                            void* abort_message) {
-  if (info->si_signo == DEBUGGER_SIGNAL && info->si_value.sival_ptr != nullptr) {
+  if (info->si_signo == BIONIC_SIGNAL_DEBUGGER && info->si_value.sival_ptr != nullptr) {
     return trace_handler(info, ucontext);
   } else {
     return crash_handler(info, ucontext, abort_message);
diff --git a/debuggerd/handler/debuggerd_handler.cpp b/debuggerd/handler/debuggerd_handler.cpp
index 598ea85..8b4b630 100644
--- a/debuggerd/handler/debuggerd_handler.cpp
+++ b/debuggerd/handler/debuggerd_handler.cpp
@@ -49,8 +49,10 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+#include <android-base/macros.h>
 #include <android-base/unique_fd.h>
 #include <async_safe/log.h>
+#include <bionic/reserved_signals.h>
 #include <cutils/properties.h>
 
 #include <libdebuggerd/utility.h>
@@ -175,7 +177,7 @@
     thread_name[MAX_TASK_NAME_LEN] = 0;
   }
 
-  if (info->si_signo == DEBUGGER_SIGNAL) {
+  if (info->si_signo == BIONIC_SIGNAL_DEBUGGER) {
     async_safe_format_log(ANDROID_LOG_INFO, "libc", "Requested dump for tid %d (%s)", __gettid(),
                           thread_name);
     return;
@@ -297,6 +299,8 @@
   void* ucontext;
   uintptr_t abort_msg;
   uintptr_t fdsan_table;
+  uintptr_t gwp_asan_state;
+  uintptr_t gwp_asan_metadata;
 };
 
 // Logging and contacting debuggerd requires free file descriptors, which we might not have.
@@ -307,7 +311,7 @@
 static void* pseudothread_stack;
 
 static DebuggerdDumpType get_dump_type(const debugger_thread_info* thread_info) {
-  if (thread_info->siginfo->si_signo == DEBUGGER_SIGNAL &&
+  if (thread_info->siginfo->si_signo == BIONIC_SIGNAL_DEBUGGER &&
       thread_info->siginfo->si_value.sival_int) {
     return kDebuggerdNativeBacktrace;
   }
@@ -341,23 +345,25 @@
   }
 
   // ucontext_t is absurdly large on AArch64, so piece it together manually with writev.
-  uint32_t version = 2;
-  constexpr size_t expected = sizeof(CrashInfoHeader) + sizeof(CrashInfoDataV2);
+  uint32_t version = 3;
+  constexpr size_t expected = sizeof(CrashInfoHeader) + sizeof(CrashInfoDataV3);
 
   errno = 0;
   if (fcntl(output_write.get(), F_SETPIPE_SZ, expected) < static_cast<int>(expected)) {
     fatal_errno("failed to set pipe buffer size");
   }
 
-  struct iovec iovs[5] = {
+  struct iovec iovs[] = {
       {.iov_base = &version, .iov_len = sizeof(version)},
       {.iov_base = thread_info->siginfo, .iov_len = sizeof(siginfo_t)},
       {.iov_base = thread_info->ucontext, .iov_len = sizeof(ucontext_t)},
       {.iov_base = &thread_info->abort_msg, .iov_len = sizeof(uintptr_t)},
       {.iov_base = &thread_info->fdsan_table, .iov_len = sizeof(uintptr_t)},
+      {.iov_base = &thread_info->gwp_asan_state, .iov_len = sizeof(uintptr_t)},
+      {.iov_base = &thread_info->gwp_asan_metadata, .iov_len = sizeof(uintptr_t)},
   };
 
-  ssize_t rc = TEMP_FAILURE_RETRY(writev(output_write.get(), iovs, 5));
+  ssize_t rc = TEMP_FAILURE_RETRY(writev(output_write.get(), iovs, arraysize(iovs)));
   if (rc == -1) {
     fatal_errno("failed to write crash info");
   } else if (rc != expected) {
@@ -429,7 +435,7 @@
     async_safe_format_log(ANDROID_LOG_FATAL, "libc", "crash_dump helper crashed or stopped");
   }
 
-  if (thread_info->siginfo->si_signo != DEBUGGER_SIGNAL) {
+  if (thread_info->siginfo->si_signo != BIONIC_SIGNAL_DEBUGGER) {
     // For crashes, we don't need to minimize pause latency.
     // Wait for the dump to complete before having the process exit, to avoid being murdered by
     // ActivityManager or init.
@@ -446,7 +452,7 @@
   // exited with the correct exit status (e.g. so that sh will report
   // "Segmentation fault" instead of "Killed"). For this to work, we need
   // to deregister our signal handler for that signal before continuing.
-  if (info->si_signo != DEBUGGER_SIGNAL) {
+  if (info->si_signo != BIONIC_SIGNAL_DEBUGGER) {
     signal(info->si_signo, SIG_DFL);
     int rc = syscall(SYS_rt_tgsigqueueinfo, __getpid(), __gettid(), info->si_signo, info);
     if (rc != 0) {
@@ -484,8 +490,10 @@
   }
 
   void* abort_message = nullptr;
+  const gwp_asan::AllocatorState* gwp_asan_state = nullptr;
+  const gwp_asan::AllocationMetadata* gwp_asan_metadata = nullptr;
   uintptr_t si_val = reinterpret_cast<uintptr_t>(info->si_ptr);
-  if (signal_number == DEBUGGER_SIGNAL) {
+  if (signal_number == BIONIC_SIGNAL_DEBUGGER) {
     if (info->si_code == SI_QUEUE && info->si_pid == __getpid()) {
       // Allow for the abort message to be explicitly specified via the sigqueue value.
       // Keep the bottom bit intact for representing whether we want a backtrace or a tombstone.
@@ -498,6 +506,12 @@
     if (g_callbacks.get_abort_message) {
       abort_message = g_callbacks.get_abort_message();
     }
+    if (g_callbacks.get_gwp_asan_state) {
+      gwp_asan_state = g_callbacks.get_gwp_asan_state();
+    }
+    if (g_callbacks.get_gwp_asan_metadata) {
+      gwp_asan_metadata = g_callbacks.get_gwp_asan_metadata();
+    }
   }
 
   // If sival_int is ~0, it means that the fallback handler has been called
@@ -525,12 +539,14 @@
   log_signal_summary(info);
 
   debugger_thread_info thread_info = {
-      .pseudothread_tid = -1,
       .crashing_tid = __gettid(),
+      .pseudothread_tid = -1,
       .siginfo = info,
       .ucontext = context,
       .abort_msg = reinterpret_cast<uintptr_t>(abort_message),
       .fdsan_table = reinterpret_cast<uintptr_t>(android_fdsan_get_fd_table()),
+      .gwp_asan_state = reinterpret_cast<uintptr_t>(gwp_asan_state),
+      .gwp_asan_metadata = reinterpret_cast<uintptr_t>(gwp_asan_metadata),
   };
 
   // Set PR_SET_DUMPABLE to 1, so that crash_dump can ptrace us.
@@ -576,7 +592,7 @@
     fatal_errno("failed to restore traceable");
   }
 
-  if (info->si_signo == DEBUGGER_SIGNAL) {
+  if (info->si_signo == BIONIC_SIGNAL_DEBUGGER) {
     // If the signal is fatal, don't unlock the mutex to prevent other crashing threads from
     // starting to dump right before our death.
     pthread_mutex_unlock(&crash_mutex);
@@ -591,19 +607,20 @@
     g_callbacks = *callbacks;
   }
 
-  void* thread_stack_allocation =
-    mmap(nullptr, PAGE_SIZE * 3, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+  size_t thread_stack_pages = 8;
+  void* thread_stack_allocation = mmap(nullptr, PAGE_SIZE * (thread_stack_pages + 2), PROT_NONE,
+                                       MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
   if (thread_stack_allocation == MAP_FAILED) {
     fatal_errno("failed to allocate debuggerd thread stack");
   }
 
   char* stack = static_cast<char*>(thread_stack_allocation) + PAGE_SIZE;
-  if (mprotect(stack, PAGE_SIZE, PROT_READ | PROT_WRITE) != 0) {
+  if (mprotect(stack, PAGE_SIZE * thread_stack_pages, PROT_READ | PROT_WRITE) != 0) {
     fatal_errno("failed to mprotect debuggerd thread stack");
   }
 
   // Stack grows negatively, set it to the last byte in the page...
-  stack = (stack + PAGE_SIZE - 1);
+  stack = (stack + thread_stack_pages * PAGE_SIZE - 1);
   // and align it.
   stack -= 15;
   pseudothread_stack = stack;
diff --git a/debuggerd/include/debuggerd/handler.h b/debuggerd/include/debuggerd/handler.h
index 7196e0a..665d24a 100644
--- a/debuggerd/include/debuggerd/handler.h
+++ b/debuggerd/include/debuggerd/handler.h
@@ -16,41 +16,58 @@
 
 #pragma once
 
+#include <bionic/reserved_signals.h>
 #include <signal.h>
 #include <stdint.h>
+#include <string.h>
 #include <sys/cdefs.h>
+#include <sys/system_properties.h>
 #include <sys/types.h>
 
 __BEGIN_DECLS
 
+// Forward declare these classes so not everyone has to include GWP-ASan
+// headers.
+namespace gwp_asan {
+struct AllocatorState;
+struct AllocationMetadata;
+};  // namespace gwp_asan
+
 // These callbacks are called in a signal handler, and thus must be async signal safe.
 // If null, the callbacks will not be called.
 typedef struct {
   struct abort_msg_t* (*get_abort_message)();
   void (*post_dump)();
+  const struct gwp_asan::AllocatorState* (*get_gwp_asan_state)();
+  const struct gwp_asan::AllocationMetadata* (*get_gwp_asan_metadata)();
 } debuggerd_callbacks_t;
 
 void debuggerd_init(debuggerd_callbacks_t* callbacks);
 
 // DEBUGGER_ACTION_DUMP_TOMBSTONE and DEBUGGER_ACTION_DUMP_BACKTRACE are both
-// triggered via DEBUGGER_SIGNAL. The debugger_action_t is sent via si_value
+// triggered via BIONIC_SIGNAL_DEBUGGER. The debugger_action_t is sent via si_value
 // using sigqueue(2) or equivalent. If no si_value is specified (e.g. if the
 // signal is sent by kill(2)), the default behavior is to print the backtrace
 // to the log.
-#define DEBUGGER_SIGNAL (__SIGRTMIN + 3)
+#define DEBUGGER_SIGNAL BIONIC_SIGNAL_DEBUGGER
 
 static void __attribute__((__unused__)) debuggerd_register_handlers(struct sigaction* action) {
-  sigaction(SIGABRT, action, nullptr);
-  sigaction(SIGBUS, action, nullptr);
-  sigaction(SIGFPE, action, nullptr);
-  sigaction(SIGILL, action, nullptr);
-  sigaction(SIGSEGV, action, nullptr);
-#if defined(SIGSTKFLT)
-  sigaction(SIGSTKFLT, action, nullptr);
-#endif
-  sigaction(SIGSYS, action, nullptr);
-  sigaction(SIGTRAP, action, nullptr);
-  sigaction(DEBUGGER_SIGNAL, action, nullptr);
+  char value[PROP_VALUE_MAX] = "";
+  bool enabled =
+      !(__system_property_get("ro.debuggable", value) > 0 && !strcmp(value, "1") &&
+        __system_property_get("debug.debuggerd.disable", value) > 0 && !strcmp(value, "1"));
+  if (enabled) {
+    sigaction(SIGABRT, action, nullptr);
+    sigaction(SIGBUS, action, nullptr);
+    sigaction(SIGFPE, action, nullptr);
+    sigaction(SIGILL, action, nullptr);
+    sigaction(SIGSEGV, action, nullptr);
+    sigaction(SIGSTKFLT, action, nullptr);
+    sigaction(SIGSYS, action, nullptr);
+    sigaction(SIGTRAP, action, nullptr);
+  }
+
+  sigaction(BIONIC_SIGNAL_DEBUGGER, action, nullptr);
 }
 
 __END_DECLS
diff --git a/debuggerd/libdebuggerd/gwp_asan.cpp b/debuggerd/libdebuggerd/gwp_asan.cpp
new file mode 100644
index 0000000..53df783
--- /dev/null
+++ b/debuggerd/libdebuggerd/gwp_asan.cpp
@@ -0,0 +1,273 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "libdebuggerd/gwp_asan.h"
+#include "libdebuggerd/utility.h"
+
+#include "gwp_asan/common.h"
+#include "gwp_asan/crash_handler.h"
+
+#include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+#include <unwindstack/Unwinder.h>
+
+// Retrieve GWP-ASan state from `state_addr` inside the process at
+// `process_memory`. Place the state into `*state`.
+static bool retrieve_gwp_asan_state(unwindstack::Memory* process_memory, uintptr_t state_addr,
+                                    gwp_asan::AllocatorState* state) {
+  return process_memory->ReadFully(state_addr, state, sizeof(*state));
+}
+
+// Retrieve the GWP-ASan metadata pool from `metadata_addr` inside the process
+// at `process_memory`. The number of metadata slots is retrieved from the
+// allocator state provided. This function returns a heap-allocated copy of the
+// metadata pool whose ownership should be managed by the caller. Returns
+// nullptr on failure.
+static const gwp_asan::AllocationMetadata* retrieve_gwp_asan_metadata(
+    unwindstack::Memory* process_memory, const gwp_asan::AllocatorState& state,
+    uintptr_t metadata_addr) {
+  if (state.MaxSimultaneousAllocations > 1024) {
+    ALOGE(
+        "Error when retrieving GWP-ASan metadata, MSA from state (%zu) "
+        "exceeds maximum allowed (1024).",
+        state.MaxSimultaneousAllocations);
+    return nullptr;
+  }
+
+  gwp_asan::AllocationMetadata* meta =
+      new gwp_asan::AllocationMetadata[state.MaxSimultaneousAllocations];
+  if (!process_memory->ReadFully(metadata_addr, meta,
+                                 sizeof(*meta) * state.MaxSimultaneousAllocations)) {
+    ALOGE(
+        "Error when retrieving GWP-ASan metadata, could not retrieve %zu "
+        "pieces of metadata.",
+        state.MaxSimultaneousAllocations);
+    delete[] meta;
+    meta = nullptr;
+  }
+  return meta;
+}
+
+GwpAsanCrashData::GwpAsanCrashData(unwindstack::Memory* process_memory,
+                                   uintptr_t gwp_asan_state_ptr, uintptr_t gwp_asan_metadata_ptr,
+                                   const ThreadInfo& thread_info) {
+  if (!process_memory || !gwp_asan_metadata_ptr || !gwp_asan_state_ptr) return;
+  // Extract the GWP-ASan regions from the dead process.
+  if (!retrieve_gwp_asan_state(process_memory, gwp_asan_state_ptr, &state_)) return;
+  metadata_.reset(retrieve_gwp_asan_metadata(process_memory, state_, gwp_asan_metadata_ptr));
+  if (!metadata_.get()) return;
+
+  // Get the external crash address from the thread info.
+  crash_address_ = 0u;
+  if (signal_has_si_addr(thread_info.siginfo)) {
+    crash_address_ = reinterpret_cast<uintptr_t>(thread_info.siginfo->si_addr);
+  }
+
+  // Ensure the error belongs to GWP-ASan.
+  if (!__gwp_asan_error_is_mine(&state_, crash_address_)) return;
+
+  is_gwp_asan_responsible_ = true;
+  thread_id_ = thread_info.tid;
+
+  // Grab the internal error address, if it exists.
+  uintptr_t internal_crash_address = __gwp_asan_get_internal_crash_address(&state_);
+  if (internal_crash_address) {
+    crash_address_ = internal_crash_address;
+  }
+
+  // Get other information from the internal state.
+  error_ = __gwp_asan_diagnose_error(&state_, metadata_.get(), crash_address_);
+  error_string_ = gwp_asan::ErrorToString(error_);
+  responsible_allocation_ = __gwp_asan_get_metadata(&state_, metadata_.get(), crash_address_);
+}
+
+bool GwpAsanCrashData::CrashIsMine() const {
+  return is_gwp_asan_responsible_;
+}
+
+void GwpAsanCrashData::DumpCause(log_t* log) const {
+  if (!CrashIsMine()) {
+    ALOGE("Internal Error: DumpCause() on a non-GWP-ASan crash.");
+    return;
+  }
+
+  if (error_ == gwp_asan::Error::UNKNOWN) {
+    _LOG(log, logtype::HEADER, "Cause: [GWP-ASan]: Unknown error occurred at 0x%" PRIxPTR ".\n",
+         crash_address_);
+    return;
+  }
+
+  if (!responsible_allocation_) {
+    _LOG(log, logtype::HEADER, "Cause: [GWP-ASan]: %s at 0x%" PRIxPTR ".\n", error_string_,
+         crash_address_);
+    return;
+  }
+
+  uintptr_t alloc_address = __gwp_asan_get_allocation_address(responsible_allocation_);
+  size_t alloc_size = __gwp_asan_get_allocation_size(responsible_allocation_);
+
+  if (crash_address_ == alloc_address) {
+    // Use After Free on a 41-byte allocation at 0xdeadbeef.
+    _LOG(log, logtype::HEADER, "Cause: [GWP-ASan]: %s on a %zu-byte allocation at 0x%" PRIxPTR "\n",
+         error_string_, alloc_size, alloc_address);
+    return;
+  }
+
+  uintptr_t diff;
+  const char* location_str;
+
+  if (crash_address_ < alloc_address) {
+    // Buffer Underflow, 6 bytes left of a 41-byte allocation at 0xdeadbeef.
+    location_str = "left of";
+    diff = alloc_address - crash_address_;
+  } else if (crash_address_ - alloc_address < alloc_size) {
+    // Use After Free, 40 bytes into a 41-byte allocation at 0xdeadbeef.
+    location_str = "into";
+    diff = crash_address_ - alloc_address;
+  } else {
+    // Buffer Overflow, 6 bytes right of a 41-byte allocation at 0xdeadbeef, or
+    // Invalid Free, 47 bytes right of a 41-byte allocation at 0xdeadbeef.
+    location_str = "right of";
+    diff = crash_address_ - alloc_address;
+    if (error_ == gwp_asan::Error::BUFFER_OVERFLOW) {
+      diff -= alloc_size;
+    }
+  }
+
+  // Suffix of 'bytes', i.e. 4 bytes' vs. '1 byte'.
+  const char* byte_suffix = "s";
+  if (diff == 1) {
+    byte_suffix = "";
+  }
+  _LOG(log, logtype::HEADER,
+       "Cause: [GWP-ASan]: %s, %" PRIuPTR " byte%s %s a %zu-byte allocation at 0x%" PRIxPTR "\n",
+       error_string_, diff, byte_suffix, location_str, alloc_size, alloc_address);
+}
+
+// Build a frame for symbolization using the maps from the provided unwinder.
+// The constructed frame contains just enough information to be used to
+// symbolize a GWP-ASan stack trace.
+static unwindstack::FrameData BuildFrame(unwindstack::Unwinder* unwinder, uintptr_t pc,
+                                         size_t frame_num) {
+  unwindstack::FrameData frame;
+  frame.num = frame_num;
+
+  unwindstack::Maps* maps = unwinder->GetMaps();
+  unwindstack::MapInfo* map_info = maps->Find(pc);
+  if (!map_info) {
+    frame.rel_pc = pc;
+    return frame;
+  }
+
+  unwindstack::Elf* elf =
+      map_info->GetElf(unwinder->GetProcessMemory(), unwindstack::Regs::CurrentArch());
+
+  uint64_t relative_pc = elf->GetRelPc(pc, map_info);
+
+  // Create registers just to get PC adjustment. Doesn't matter what they point
+  // to.
+  unwindstack::Regs* regs = unwindstack::Regs::CreateFromLocal();
+  uint64_t pc_adjustment = regs->GetPcAdjustment(relative_pc, elf);
+  relative_pc -= pc_adjustment;
+  // The debug PC may be different if the PC comes from the JIT.
+  uint64_t debug_pc = relative_pc;
+
+  // If we don't have a valid ELF file, check the JIT.
+  if (!elf->valid()) {
+    unwindstack::JitDebug jit_debug(unwinder->GetProcessMemory());
+    uint64_t jit_pc = pc - pc_adjustment;
+    unwindstack::Elf* jit_elf = jit_debug.GetElf(maps, jit_pc);
+    if (jit_elf != nullptr) {
+      debug_pc = jit_pc;
+      elf = jit_elf;
+    }
+  }
+
+  // Copy all the things we need into the frame for symbolization.
+  frame.rel_pc = relative_pc;
+  frame.pc = pc - pc_adjustment;
+  frame.map_name = map_info->name;
+  frame.map_elf_start_offset = map_info->elf_start_offset;
+  frame.map_exact_offset = map_info->offset;
+  frame.map_start = map_info->start;
+  frame.map_end = map_info->end;
+  frame.map_flags = map_info->flags;
+  frame.map_load_bias = elf->GetLoadBias();
+
+  if (!elf->GetFunctionName(relative_pc, &frame.function_name, &frame.function_offset)) {
+    frame.function_name = "";
+    frame.function_offset = 0;
+  }
+  return frame;
+}
+
+constexpr size_t kMaxTraceLength = gwp_asan::AllocationMetadata::kMaxTraceLengthToCollect;
+
+bool GwpAsanCrashData::HasDeallocationTrace() const {
+  assert(CrashIsMine() && "HasDeallocationTrace(): Crash is not mine!");
+  if (!responsible_allocation_ || !__gwp_asan_is_deallocated(responsible_allocation_)) {
+    return false;
+  }
+  return true;
+}
+
+void GwpAsanCrashData::DumpDeallocationTrace(log_t* log, unwindstack::Unwinder* unwinder) const {
+  assert(HasDeallocationTrace() && "DumpDeallocationTrace(): No dealloc trace!");
+  uint64_t thread_id = __gwp_asan_get_deallocation_thread_id(responsible_allocation_);
+
+  std::unique_ptr<uintptr_t> frames(new uintptr_t[kMaxTraceLength]);
+  size_t num_frames =
+      __gwp_asan_get_deallocation_trace(responsible_allocation_, frames.get(), kMaxTraceLength);
+
+  if (thread_id == gwp_asan::kInvalidThreadID) {
+    _LOG(log, logtype::BACKTRACE, "\ndeallocated by thread <unknown>:\n");
+  } else {
+    _LOG(log, logtype::BACKTRACE, "\ndeallocated by thread %" PRIu64 ":\n", thread_id);
+  }
+
+  unwinder->SetDisplayBuildID(true);
+  for (size_t i = 0; i < num_frames; ++i) {
+    unwindstack::FrameData frame_data = BuildFrame(unwinder, frames.get()[i], i);
+    _LOG(log, logtype::BACKTRACE, "    %s\n", unwinder->FormatFrame(frame_data).c_str());
+  }
+}
+
+bool GwpAsanCrashData::HasAllocationTrace() const {
+  assert(CrashIsMine() && "HasAllocationTrace(): Crash is not mine!");
+  return responsible_allocation_ != nullptr;
+}
+
+void GwpAsanCrashData::DumpAllocationTrace(log_t* log, unwindstack::Unwinder* unwinder) const {
+  assert(HasAllocationTrace() && "DumpAllocationTrace(): No dealloc trace!");
+  uint64_t thread_id = __gwp_asan_get_allocation_thread_id(responsible_allocation_);
+
+  std::unique_ptr<uintptr_t> frames(new uintptr_t[kMaxTraceLength]);
+  size_t num_frames =
+      __gwp_asan_get_allocation_trace(responsible_allocation_, frames.get(), kMaxTraceLength);
+
+  if (thread_id == gwp_asan::kInvalidThreadID) {
+    _LOG(log, logtype::BACKTRACE, "\nallocated by thread <unknown>:\n");
+  } else {
+    _LOG(log, logtype::BACKTRACE, "\nallocated by thread %" PRIu64 ":\n", thread_id);
+  }
+
+  unwinder->SetDisplayBuildID(true);
+  for (size_t i = 0; i < num_frames; ++i) {
+    unwindstack::FrameData frame_data = BuildFrame(unwinder, frames.get()[i], i);
+    _LOG(log, logtype::BACKTRACE, "    %s\n", unwinder->FormatFrame(frame_data).c_str());
+  }
+}
diff --git a/debuggerd/libdebuggerd/include/libdebuggerd/gwp_asan.h b/debuggerd/libdebuggerd/include/libdebuggerd/gwp_asan.h
new file mode 100644
index 0000000..aef4c62
--- /dev/null
+++ b/debuggerd/libdebuggerd/include/libdebuggerd/gwp_asan.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <log/log.h>
+#include <unwindstack/Memory.h>
+
+#include "gwp_asan/common.h"
+#include "types.h"
+#include "utility.h"
+
+class GwpAsanCrashData {
+ public:
+  GwpAsanCrashData() = delete;
+  ~GwpAsanCrashData() = default;
+
+  // Construct the crash data object. Takes a handle to the object that can
+  // supply the memory of the dead process, and pointers to the GWP-ASan state
+  // and metadata regions within that process. Also takes the thread information
+  // of the crashed process. If the process didn't crash via SEGV, GWP-ASan may
+  // still be responsible, as it terminates when it detects an internal error
+  // (double free, invalid free). In these cases, we will retrieve the fault
+  // address from the GWP-ASan allocator's state.
+  GwpAsanCrashData(unwindstack::Memory* process_memory, uintptr_t gwp_asan_state_ptr,
+                   uintptr_t gwp_asan_metadata_ptr, const ThreadInfo& thread_info);
+
+  // Is GWP-ASan responsible for this crash.
+  bool CrashIsMine() const;
+
+  // Returns the fault address. The fault address may be the same as provided
+  // during construction, or it may have been retrieved from GWP-ASan's internal
+  // allocator crash state.
+  uintptr_t GetFaultAddress() const;
+
+  // Dump the GWP-ASan stringified cause of this crash. May only be called if
+  // CrashIsMine() returns true.
+  void DumpCause(log_t* log) const;
+
+  // Returns whether this crash has a deallocation trace. May only be called if
+  // CrashIsMine() returns true.
+  bool HasDeallocationTrace() const;
+
+  // Dump the GWP-ASan deallocation trace for this crash. May only be called if
+  // HasDeallocationTrace() returns true.
+  void DumpDeallocationTrace(log_t* log, unwindstack::Unwinder* unwinder) const;
+
+  // Returns whether this crash has a allocation trace. May only be called if
+  // CrashIsMine() returns true.
+  bool HasAllocationTrace() const;
+
+  // Dump the GWP-ASan allocation trace for this crash. May only be called if
+  // HasAllocationTrace() returns true.
+  void DumpAllocationTrace(log_t* log, unwindstack::Unwinder* unwinder) const;
+
+ protected:
+  // Is GWP-ASan responsible for this crash.
+  bool is_gwp_asan_responsible_ = false;
+
+  // Thread ID of the crash.
+  size_t thread_id_;
+
+  // The type of error that GWP-ASan caused (and the stringified version),
+  // Undefined if GWP-ASan isn't responsible for the crash.
+  gwp_asan::Error error_;
+  const char* error_string_;
+
+  // Pointer to the crash address. Holds the internal crash address if it
+  // exists, otherwise the address provided at construction.
+  uintptr_t crash_address_ = 0u;
+
+  // Pointer to the metadata for the responsible allocation, nullptr if it
+  // doesn't exist.
+  const gwp_asan::AllocationMetadata* responsible_allocation_ = nullptr;
+
+  // Internal state.
+  gwp_asan::AllocatorState state_;
+  std::unique_ptr<const gwp_asan::AllocationMetadata> metadata_;
+};
diff --git a/debuggerd/libdebuggerd/include/libdebuggerd/tombstone.h b/debuggerd/libdebuggerd/include/libdebuggerd/tombstone.h
index 7133f77..291d994 100644
--- a/debuggerd/libdebuggerd/include/libdebuggerd/tombstone.h
+++ b/debuggerd/libdebuggerd/include/libdebuggerd/tombstone.h
@@ -55,6 +55,7 @@
 void engrave_tombstone(android::base::unique_fd output_fd, unwindstack::Unwinder* unwinder,
                        const std::map<pid_t, ThreadInfo>& thread_info, pid_t target_thread,
                        uint64_t abort_msg_address, OpenFilesList* open_files,
-                       std::string* amfd_data);
+                       std::string* amfd_data, uintptr_t gwp_asan_state,
+                       uintptr_t gwp_asan_metadata);
 
 #endif  // _DEBUGGERD_TOMBSTONE_H
diff --git a/debuggerd/libdebuggerd/include/libdebuggerd/utility.h b/debuggerd/libdebuggerd/include/libdebuggerd/utility.h
index f189c45..75bac87 100644
--- a/debuggerd/libdebuggerd/include/libdebuggerd/utility.h
+++ b/debuggerd/libdebuggerd/include/libdebuggerd/utility.h
@@ -20,6 +20,7 @@
 
 #include <inttypes.h>
 #include <signal.h>
+#include <stdarg.h>
 #include <stdbool.h>
 #include <sys/types.h>
 
@@ -71,6 +72,7 @@
 
 // Log information onto the tombstone.
 void _LOG(log_t* log, logtype ltype, const char* fmt, ...) __attribute__((format(printf, 3, 4)));
+void _VLOG(log_t* log, logtype ltype, const char* fmt, va_list ap);
 
 namespace unwindstack {
 class Unwinder;
diff --git a/debuggerd/libdebuggerd/test/tombstone_test.cpp b/debuggerd/libdebuggerd/test/tombstone_test.cpp
index 88c206f..eed95bc 100644
--- a/debuggerd/libdebuggerd/test/tombstone_test.cpp
+++ b/debuggerd/libdebuggerd/test/tombstone_test.cpp
@@ -23,6 +23,7 @@
 
 #include <android-base/file.h>
 #include <android-base/properties.h>
+#include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
 #include "libdebuggerd/utility.h"
@@ -31,8 +32,13 @@
 #include "host_signal_fixup.h"
 #include "log_fake.h"
 
+// Include tombstone.cpp to define log_tag before GWP-ASan includes log.
 #include "tombstone.cpp"
 
+#include "gwp_asan.cpp"
+
+using ::testing::MatchesRegex;
+
 class TombstoneTest : public ::testing::Test {
  protected:
   virtual void SetUp() {
@@ -345,9 +351,9 @@
 
 TEST_F(TombstoneTest, dump_thread_info_uid) {
   dump_thread_info(&log_, ThreadInfo{.uid = 1,
-                                     .pid = 2,
                                      .tid = 3,
                                      .thread_name = "some_thread",
+                                     .pid = 2,
                                      .process_name = "some_process"});
   std::string expected = "pid: 2, tid: 3, name: some_thread  >>> some_process <<<\nuid: 1\n";
   ASSERT_STREQ(expected.c_str(), amfd_data_.c_str());
@@ -360,466 +366,130 @@
   ASSERT_STREQ("Timestamp: 1970-01-01 00:00:00+0000\n", amfd_data_.c_str());
 }
 
-class MemoryPattern : public unwindstack::Memory {
- public:
-  MemoryPattern() = default;
-  virtual ~MemoryPattern() = default;
+class GwpAsanCrashDataTest : public GwpAsanCrashData {
+public:
+  GwpAsanCrashDataTest(
+      gwp_asan::Error error,
+      const gwp_asan::AllocationMetadata *responsible_allocation) :
+      GwpAsanCrashData(nullptr, 0u, 0u, ThreadInfo{}) {
+    is_gwp_asan_responsible_ = true;
+    error_ = error;
+    responsible_allocation_ = responsible_allocation;
+    error_string_ = gwp_asan::ErrorToString(error_);
+  }
 
-  size_t Read(uint64_t, void* dst, size_t size) override {
-    uint8_t* data = reinterpret_cast<uint8_t*>(dst);
-    for (size_t i = 0; i < size; i++) {
-      data[i] = (i % 0xff);
-    }
-    return size;
+  void SetCrashAddress(uintptr_t crash_address) {
+    crash_address_ = crash_address;
   }
 };
 
-TEST_F(TombstoneTest, dump_stack_single_frame) {
-  std::vector<unwindstack::FrameData> frames;
-  unwindstack::Maps maps;
-  MemoryPattern memory;
+TEST_F(TombstoneTest, gwp_asan_cause_uaf_exact) {
+  gwp_asan::AllocationMetadata meta;
+  meta.Addr = 0x1000;
+  meta.Size = 32;
 
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1000, .pc = 0x301000, .sp = 0x2000});
-  dump_stack(&log_, frames, &maps, &memory);
+  GwpAsanCrashDataTest crash_data(gwp_asan::Error::USE_AFTER_FREE, &meta);
+  crash_data.SetCrashAddress(0x1000);
 
-  std::string contents;
+  crash_data.DumpCause(&log_);
   ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
-  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &contents));
-
-  std::string expected =
-#if defined(__LP64__)
-      "         0000000000001f80  0706050403020100\n"
-      "         0000000000001f88  0f0e0d0c0b0a0908\n"
-      "         0000000000001f90  1716151413121110\n"
-      "         0000000000001f98  1f1e1d1c1b1a1918\n"
-      "         0000000000001fa0  2726252423222120\n"
-      "         0000000000001fa8  2f2e2d2c2b2a2928\n"
-      "         0000000000001fb0  3736353433323130\n"
-      "         0000000000001fb8  3f3e3d3c3b3a3938\n"
-      "         0000000000001fc0  4746454443424140\n"
-      "         0000000000001fc8  4f4e4d4c4b4a4948\n"
-      "         0000000000001fd0  5756555453525150\n"
-      "         0000000000001fd8  5f5e5d5c5b5a5958\n"
-      "         0000000000001fe0  6766656463626160\n"
-      "         0000000000001fe8  6f6e6d6c6b6a6968\n"
-      "         0000000000001ff0  7776757473727170\n"
-      "         0000000000001ff8  7f7e7d7c7b7a7978\n"
-      "    #00  0000000000002000  0706050403020100\n"
-      "         0000000000002008  0f0e0d0c0b0a0908\n"
-      "         0000000000002010  1716151413121110\n"
-      "         0000000000002018  1f1e1d1c1b1a1918\n"
-      "         0000000000002020  2726252423222120\n"
-      "         0000000000002028  2f2e2d2c2b2a2928\n"
-      "         0000000000002030  3736353433323130\n"
-      "         0000000000002038  3f3e3d3c3b3a3938\n"
-      "         0000000000002040  4746454443424140\n"
-      "         0000000000002048  4f4e4d4c4b4a4948\n"
-      "         0000000000002050  5756555453525150\n"
-      "         0000000000002058  5f5e5d5c5b5a5958\n"
-      "         0000000000002060  6766656463626160\n"
-      "         0000000000002068  6f6e6d6c6b6a6968\n"
-      "         0000000000002070  7776757473727170\n"
-      "         0000000000002078  7f7e7d7c7b7a7978\n";
-#else
-      "         00001fc0  03020100\n"
-      "         00001fc4  07060504\n"
-      "         00001fc8  0b0a0908\n"
-      "         00001fcc  0f0e0d0c\n"
-      "         00001fd0  13121110\n"
-      "         00001fd4  17161514\n"
-      "         00001fd8  1b1a1918\n"
-      "         00001fdc  1f1e1d1c\n"
-      "         00001fe0  23222120\n"
-      "         00001fe4  27262524\n"
-      "         00001fe8  2b2a2928\n"
-      "         00001fec  2f2e2d2c\n"
-      "         00001ff0  33323130\n"
-      "         00001ff4  37363534\n"
-      "         00001ff8  3b3a3938\n"
-      "         00001ffc  3f3e3d3c\n"
-      "    #00  00002000  03020100\n"
-      "         00002004  07060504\n"
-      "         00002008  0b0a0908\n"
-      "         0000200c  0f0e0d0c\n"
-      "         00002010  13121110\n"
-      "         00002014  17161514\n"
-      "         00002018  1b1a1918\n"
-      "         0000201c  1f1e1d1c\n"
-      "         00002020  23222120\n"
-      "         00002024  27262524\n"
-      "         00002028  2b2a2928\n"
-      "         0000202c  2f2e2d2c\n"
-      "         00002030  33323130\n"
-      "         00002034  37363534\n"
-      "         00002038  3b3a3938\n"
-      "         0000203c  3f3e3d3c\n";
-#endif
-  EXPECT_EQ(expected, contents);
+  std::string tombstone_contents;
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_THAT(tombstone_contents,
+              MatchesRegex("Cause: \\[GWP-ASan\\]: Use After Free on a 32-byte "
+                           "allocation at 0x[a-fA-F0-9]+\n"));
 }
 
-TEST_F(TombstoneTest, dump_stack_multiple_frames_same_sp) {
-  std::vector<unwindstack::FrameData> frames;
-  unwindstack::Maps maps;
-  MemoryPattern memory;
+TEST_F(TombstoneTest, gwp_asan_cause_double_free) {
+  gwp_asan::AllocationMetadata meta;
+  meta.Addr = 0x1000;
+  meta.Size = 32;
 
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1000, .pc = 0x301000, .sp = 0x2000});
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1400, .pc = 0x301400, .sp = 0x2000});
-  dump_stack(&log_, frames, &maps, &memory);
+  GwpAsanCrashDataTest crash_data(gwp_asan::Error::DOUBLE_FREE, &meta);
+  crash_data.SetCrashAddress(0x1000);
 
-  std::string contents;
+  crash_data.DumpCause(&log_);
   ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
-  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &contents));
-
-  std::string expected =
-#if defined(__LP64__)
-      "         0000000000001f80  0706050403020100\n"
-      "         0000000000001f88  0f0e0d0c0b0a0908\n"
-      "         0000000000001f90  1716151413121110\n"
-      "         0000000000001f98  1f1e1d1c1b1a1918\n"
-      "         0000000000001fa0  2726252423222120\n"
-      "         0000000000001fa8  2f2e2d2c2b2a2928\n"
-      "         0000000000001fb0  3736353433323130\n"
-      "         0000000000001fb8  3f3e3d3c3b3a3938\n"
-      "         0000000000001fc0  4746454443424140\n"
-      "         0000000000001fc8  4f4e4d4c4b4a4948\n"
-      "         0000000000001fd0  5756555453525150\n"
-      "         0000000000001fd8  5f5e5d5c5b5a5958\n"
-      "         0000000000001fe0  6766656463626160\n"
-      "         0000000000001fe8  6f6e6d6c6b6a6968\n"
-      "         0000000000001ff0  7776757473727170\n"
-      "         0000000000001ff8  7f7e7d7c7b7a7978\n"
-      "    #00  0000000000002000  0706050403020100\n"
-      "         ................  ................\n"
-      "    #01  0000000000002000  0706050403020100\n"
-      "         0000000000002008  0f0e0d0c0b0a0908\n"
-      "         0000000000002010  1716151413121110\n"
-      "         0000000000002018  1f1e1d1c1b1a1918\n"
-      "         0000000000002020  2726252423222120\n"
-      "         0000000000002028  2f2e2d2c2b2a2928\n"
-      "         0000000000002030  3736353433323130\n"
-      "         0000000000002038  3f3e3d3c3b3a3938\n"
-      "         0000000000002040  4746454443424140\n"
-      "         0000000000002048  4f4e4d4c4b4a4948\n"
-      "         0000000000002050  5756555453525150\n"
-      "         0000000000002058  5f5e5d5c5b5a5958\n"
-      "         0000000000002060  6766656463626160\n"
-      "         0000000000002068  6f6e6d6c6b6a6968\n"
-      "         0000000000002070  7776757473727170\n"
-      "         0000000000002078  7f7e7d7c7b7a7978\n";
-#else
-      "         00001fc0  03020100\n"
-      "         00001fc4  07060504\n"
-      "         00001fc8  0b0a0908\n"
-      "         00001fcc  0f0e0d0c\n"
-      "         00001fd0  13121110\n"
-      "         00001fd4  17161514\n"
-      "         00001fd8  1b1a1918\n"
-      "         00001fdc  1f1e1d1c\n"
-      "         00001fe0  23222120\n"
-      "         00001fe4  27262524\n"
-      "         00001fe8  2b2a2928\n"
-      "         00001fec  2f2e2d2c\n"
-      "         00001ff0  33323130\n"
-      "         00001ff4  37363534\n"
-      "         00001ff8  3b3a3938\n"
-      "         00001ffc  3f3e3d3c\n"
-      "    #00  00002000  03020100\n"
-      "         ........  ........\n"
-      "    #01  00002000  03020100\n"
-      "         00002004  07060504\n"
-      "         00002008  0b0a0908\n"
-      "         0000200c  0f0e0d0c\n"
-      "         00002010  13121110\n"
-      "         00002014  17161514\n"
-      "         00002018  1b1a1918\n"
-      "         0000201c  1f1e1d1c\n"
-      "         00002020  23222120\n"
-      "         00002024  27262524\n"
-      "         00002028  2b2a2928\n"
-      "         0000202c  2f2e2d2c\n"
-      "         00002030  33323130\n"
-      "         00002034  37363534\n"
-      "         00002038  3b3a3938\n"
-      "         0000203c  3f3e3d3c\n";
-#endif
-  EXPECT_EQ(expected, contents);
+  std::string tombstone_contents;
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_THAT(tombstone_contents,
+              MatchesRegex("Cause: \\[GWP-ASan\\]: Double Free on a 32-byte "
+                           "allocation at 0x[a-fA-F0-9]+\n"));
 }
 
-TEST_F(TombstoneTest, dump_stack_multiple_frames) {
-  std::vector<unwindstack::FrameData> frames;
-  unwindstack::Maps maps;
-  MemoryPattern memory;
+TEST_F(TombstoneTest, gwp_asan_cause_overflow) {
+  gwp_asan::AllocationMetadata meta;
+  meta.Addr = 0x1000;
+  meta.Size = 32;
 
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1000, .pc = 0x301000, .sp = 0x2000});
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1400, .pc = 0x301400, .sp = 0x2010});
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1400, .pc = 0x301400, .sp = 0x2100});
-  dump_stack(&log_, frames, &maps, &memory);
+  GwpAsanCrashDataTest crash_data(gwp_asan::Error::BUFFER_OVERFLOW, &meta);
+  crash_data.SetCrashAddress(0x1025);
 
-  std::string contents;
+  crash_data.DumpCause(&log_);
   ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
-  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &contents));
-
-  std::string expected =
-#if defined(__LP64__)
-      "         0000000000001f80  0706050403020100\n"
-      "         0000000000001f88  0f0e0d0c0b0a0908\n"
-      "         0000000000001f90  1716151413121110\n"
-      "         0000000000001f98  1f1e1d1c1b1a1918\n"
-      "         0000000000001fa0  2726252423222120\n"
-      "         0000000000001fa8  2f2e2d2c2b2a2928\n"
-      "         0000000000001fb0  3736353433323130\n"
-      "         0000000000001fb8  3f3e3d3c3b3a3938\n"
-      "         0000000000001fc0  4746454443424140\n"
-      "         0000000000001fc8  4f4e4d4c4b4a4948\n"
-      "         0000000000001fd0  5756555453525150\n"
-      "         0000000000001fd8  5f5e5d5c5b5a5958\n"
-      "         0000000000001fe0  6766656463626160\n"
-      "         0000000000001fe8  6f6e6d6c6b6a6968\n"
-      "         0000000000001ff0  7776757473727170\n"
-      "         0000000000001ff8  7f7e7d7c7b7a7978\n"
-      "    #00  0000000000002000  0706050403020100\n"
-      "         0000000000002008  0f0e0d0c0b0a0908\n"
-      "    #01  0000000000002010  0706050403020100\n"
-      "         0000000000002018  0f0e0d0c0b0a0908\n"
-      "         0000000000002020  1716151413121110\n"
-      "         0000000000002028  1f1e1d1c1b1a1918\n"
-      "         0000000000002030  2726252423222120\n"
-      "         0000000000002038  2f2e2d2c2b2a2928\n"
-      "         0000000000002040  3736353433323130\n"
-      "         0000000000002048  3f3e3d3c3b3a3938\n"
-      "         0000000000002050  4746454443424140\n"
-      "         0000000000002058  4f4e4d4c4b4a4948\n"
-      "         0000000000002060  5756555453525150\n"
-      "         0000000000002068  5f5e5d5c5b5a5958\n"
-      "         0000000000002070  6766656463626160\n"
-      "         0000000000002078  6f6e6d6c6b6a6968\n"
-      "         0000000000002080  7776757473727170\n"
-      "         0000000000002088  7f7e7d7c7b7a7978\n"
-      "         ................  ................\n"
-      "    #02  0000000000002100  0706050403020100\n"
-      "         0000000000002108  0f0e0d0c0b0a0908\n"
-      "         0000000000002110  1716151413121110\n"
-      "         0000000000002118  1f1e1d1c1b1a1918\n"
-      "         0000000000002120  2726252423222120\n"
-      "         0000000000002128  2f2e2d2c2b2a2928\n"
-      "         0000000000002130  3736353433323130\n"
-      "         0000000000002138  3f3e3d3c3b3a3938\n"
-      "         0000000000002140  4746454443424140\n"
-      "         0000000000002148  4f4e4d4c4b4a4948\n"
-      "         0000000000002150  5756555453525150\n"
-      "         0000000000002158  5f5e5d5c5b5a5958\n"
-      "         0000000000002160  6766656463626160\n"
-      "         0000000000002168  6f6e6d6c6b6a6968\n"
-      "         0000000000002170  7776757473727170\n"
-      "         0000000000002178  7f7e7d7c7b7a7978\n";
-#else
-      "         00001fc0  03020100\n"
-      "         00001fc4  07060504\n"
-      "         00001fc8  0b0a0908\n"
-      "         00001fcc  0f0e0d0c\n"
-      "         00001fd0  13121110\n"
-      "         00001fd4  17161514\n"
-      "         00001fd8  1b1a1918\n"
-      "         00001fdc  1f1e1d1c\n"
-      "         00001fe0  23222120\n"
-      "         00001fe4  27262524\n"
-      "         00001fe8  2b2a2928\n"
-      "         00001fec  2f2e2d2c\n"
-      "         00001ff0  33323130\n"
-      "         00001ff4  37363534\n"
-      "         00001ff8  3b3a3938\n"
-      "         00001ffc  3f3e3d3c\n"
-      "    #00  00002000  03020100\n"
-      "         00002004  07060504\n"
-      "         00002008  0b0a0908\n"
-      "         0000200c  0f0e0d0c\n"
-      "    #01  00002010  03020100\n"
-      "         00002014  07060504\n"
-      "         00002018  0b0a0908\n"
-      "         0000201c  0f0e0d0c\n"
-      "         00002020  13121110\n"
-      "         00002024  17161514\n"
-      "         00002028  1b1a1918\n"
-      "         0000202c  1f1e1d1c\n"
-      "         00002030  23222120\n"
-      "         00002034  27262524\n"
-      "         00002038  2b2a2928\n"
-      "         0000203c  2f2e2d2c\n"
-      "         00002040  33323130\n"
-      "         00002044  37363534\n"
-      "         00002048  3b3a3938\n"
-      "         0000204c  3f3e3d3c\n"
-      "         ........  ........\n"
-      "    #02  00002100  03020100\n"
-      "         00002104  07060504\n"
-      "         00002108  0b0a0908\n"
-      "         0000210c  0f0e0d0c\n"
-      "         00002110  13121110\n"
-      "         00002114  17161514\n"
-      "         00002118  1b1a1918\n"
-      "         0000211c  1f1e1d1c\n"
-      "         00002120  23222120\n"
-      "         00002124  27262524\n"
-      "         00002128  2b2a2928\n"
-      "         0000212c  2f2e2d2c\n"
-      "         00002130  33323130\n"
-      "         00002134  37363534\n"
-      "         00002138  3b3a3938\n"
-      "         0000213c  3f3e3d3c\n";
-#endif
-  EXPECT_EQ(expected, contents);
+  std::string tombstone_contents;
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_THAT(
+      tombstone_contents,
+      MatchesRegex(
+          "Cause: \\[GWP-ASan\\]: Buffer Overflow, 5 bytes right of a 32-byte "
+          "allocation at 0x[a-fA-F0-9]+\n"));
 }
 
-TEST_F(TombstoneTest, dump_stack_multiple_frames_disjoint_frames) {
-  std::vector<unwindstack::FrameData> frames;
-  unwindstack::Maps maps;
-  MemoryPattern memory;
+TEST_F(TombstoneTest, gwp_asan_cause_underflow) {
+  gwp_asan::AllocationMetadata meta;
+  meta.Addr = 0x1000;
+  meta.Size = 32;
 
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1000, .pc = 0x301000, .sp = 0x2000});
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1400, .pc = 0x301400, .sp = 0x2010});
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1400, .pc = 0x301400, .sp = 0x1000});
-  frames.push_back(
-      unwindstack::FrameData{.num = 0, .rel_pc = 0x1400, .pc = 0x301400, .sp = 0x1030});
-  dump_stack(&log_, frames, &maps, &memory);
+  GwpAsanCrashDataTest crash_data(gwp_asan::Error::BUFFER_UNDERFLOW, &meta);
+  crash_data.SetCrashAddress(0xffe);
 
-  std::string contents;
+  crash_data.DumpCause(&log_);
   ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
-  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &contents));
-
-  std::string expected =
-#if defined(__LP64__)
-      "         0000000000001f80  0706050403020100\n"
-      "         0000000000001f88  0f0e0d0c0b0a0908\n"
-      "         0000000000001f90  1716151413121110\n"
-      "         0000000000001f98  1f1e1d1c1b1a1918\n"
-      "         0000000000001fa0  2726252423222120\n"
-      "         0000000000001fa8  2f2e2d2c2b2a2928\n"
-      "         0000000000001fb0  3736353433323130\n"
-      "         0000000000001fb8  3f3e3d3c3b3a3938\n"
-      "         0000000000001fc0  4746454443424140\n"
-      "         0000000000001fc8  4f4e4d4c4b4a4948\n"
-      "         0000000000001fd0  5756555453525150\n"
-      "         0000000000001fd8  5f5e5d5c5b5a5958\n"
-      "         0000000000001fe0  6766656463626160\n"
-      "         0000000000001fe8  6f6e6d6c6b6a6968\n"
-      "         0000000000001ff0  7776757473727170\n"
-      "         0000000000001ff8  7f7e7d7c7b7a7978\n"
-      "    #00  0000000000002000  0706050403020100\n"
-      "         0000000000002008  0f0e0d0c0b0a0908\n"
-      "    #01  0000000000002010  0706050403020100\n"
-      "         0000000000002018  0f0e0d0c0b0a0908\n"
-      "         0000000000002020  1716151413121110\n"
-      "         0000000000002028  1f1e1d1c1b1a1918\n"
-      "         0000000000002030  2726252423222120\n"
-      "         0000000000002038  2f2e2d2c2b2a2928\n"
-      "         0000000000002040  3736353433323130\n"
-      "         0000000000002048  3f3e3d3c3b3a3938\n"
-      "         0000000000002050  4746454443424140\n"
-      "         0000000000002058  4f4e4d4c4b4a4948\n"
-      "         0000000000002060  5756555453525150\n"
-      "         0000000000002068  5f5e5d5c5b5a5958\n"
-      "         0000000000002070  6766656463626160\n"
-      "         0000000000002078  6f6e6d6c6b6a6968\n"
-      "         0000000000002080  7776757473727170\n"
-      "         0000000000002088  7f7e7d7c7b7a7978\n"
-      "         ................  ................\n"
-      "    #02  0000000000001000  0706050403020100\n"
-      "         0000000000001008  0f0e0d0c0b0a0908\n"
-      "         0000000000001010  1716151413121110\n"
-      "         0000000000001018  1f1e1d1c1b1a1918\n"
-      "         0000000000001020  2726252423222120\n"
-      "         0000000000001028  2f2e2d2c2b2a2928\n"
-      "    #03  0000000000001030  0706050403020100\n"
-      "         0000000000001038  0f0e0d0c0b0a0908\n"
-      "         0000000000001040  1716151413121110\n"
-      "         0000000000001048  1f1e1d1c1b1a1918\n"
-      "         0000000000001050  2726252423222120\n"
-      "         0000000000001058  2f2e2d2c2b2a2928\n"
-      "         0000000000001060  3736353433323130\n"
-      "         0000000000001068  3f3e3d3c3b3a3938\n"
-      "         0000000000001070  4746454443424140\n"
-      "         0000000000001078  4f4e4d4c4b4a4948\n"
-      "         0000000000001080  5756555453525150\n"
-      "         0000000000001088  5f5e5d5c5b5a5958\n"
-      "         0000000000001090  6766656463626160\n"
-      "         0000000000001098  6f6e6d6c6b6a6968\n"
-      "         00000000000010a0  7776757473727170\n"
-      "         00000000000010a8  7f7e7d7c7b7a7978\n";
-#else
-      "         00001fc0  03020100\n"
-      "         00001fc4  07060504\n"
-      "         00001fc8  0b0a0908\n"
-      "         00001fcc  0f0e0d0c\n"
-      "         00001fd0  13121110\n"
-      "         00001fd4  17161514\n"
-      "         00001fd8  1b1a1918\n"
-      "         00001fdc  1f1e1d1c\n"
-      "         00001fe0  23222120\n"
-      "         00001fe4  27262524\n"
-      "         00001fe8  2b2a2928\n"
-      "         00001fec  2f2e2d2c\n"
-      "         00001ff0  33323130\n"
-      "         00001ff4  37363534\n"
-      "         00001ff8  3b3a3938\n"
-      "         00001ffc  3f3e3d3c\n"
-      "    #00  00002000  03020100\n"
-      "         00002004  07060504\n"
-      "         00002008  0b0a0908\n"
-      "         0000200c  0f0e0d0c\n"
-      "    #01  00002010  03020100\n"
-      "         00002014  07060504\n"
-      "         00002018  0b0a0908\n"
-      "         0000201c  0f0e0d0c\n"
-      "         00002020  13121110\n"
-      "         00002024  17161514\n"
-      "         00002028  1b1a1918\n"
-      "         0000202c  1f1e1d1c\n"
-      "         00002030  23222120\n"
-      "         00002034  27262524\n"
-      "         00002038  2b2a2928\n"
-      "         0000203c  2f2e2d2c\n"
-      "         00002040  33323130\n"
-      "         00002044  37363534\n"
-      "         00002048  3b3a3938\n"
-      "         0000204c  3f3e3d3c\n"
-      "         ........  ........\n"
-      "    #02  00001000  03020100\n"
-      "         00001004  07060504\n"
-      "         00001008  0b0a0908\n"
-      "         0000100c  0f0e0d0c\n"
-      "         00001010  13121110\n"
-      "         00001014  17161514\n"
-      "         00001018  1b1a1918\n"
-      "         0000101c  1f1e1d1c\n"
-      "         00001020  23222120\n"
-      "         00001024  27262524\n"
-      "         00001028  2b2a2928\n"
-      "         0000102c  2f2e2d2c\n"
-      "    #03  00001030  03020100\n"
-      "         00001034  07060504\n"
-      "         00001038  0b0a0908\n"
-      "         0000103c  0f0e0d0c\n"
-      "         00001040  13121110\n"
-      "         00001044  17161514\n"
-      "         00001048  1b1a1918\n"
-      "         0000104c  1f1e1d1c\n"
-      "         00001050  23222120\n"
-      "         00001054  27262524\n"
-      "         00001058  2b2a2928\n"
-      "         0000105c  2f2e2d2c\n"
-      "         00001060  33323130\n"
-      "         00001064  37363534\n"
-      "         00001068  3b3a3938\n"
-      "         0000106c  3f3e3d3c\n";
-#endif
-  EXPECT_EQ(expected, contents);
+  std::string tombstone_contents;
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_THAT(
+      tombstone_contents,
+      MatchesRegex(
+          "Cause: \\[GWP-ASan\\]: Buffer Underflow, 2 bytes left of a 32-byte "
+          "allocation at 0x[a-fA-F0-9]+\n"));
 }
+
+TEST_F(TombstoneTest, gwp_asan_cause_invalid_free_inside) {
+  gwp_asan::AllocationMetadata meta;
+  meta.Addr = 0x1000;
+  meta.Size = 32;
+
+  GwpAsanCrashDataTest crash_data(gwp_asan::Error::INVALID_FREE, &meta);
+  crash_data.SetCrashAddress(0x1001);
+
+  crash_data.DumpCause(&log_);
+  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
+  std::string tombstone_contents;
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_THAT(
+      tombstone_contents,
+      MatchesRegex(
+          "Cause: \\[GWP-ASan\\]: Invalid \\(Wild\\) Free, 1 byte into a 32-byte "
+          "allocation at 0x[a-fA-F0-9]+\n"));
+}
+
+TEST_F(TombstoneTest, gwp_asan_cause_invalid_free_outside) {
+  gwp_asan::AllocationMetadata meta;
+  meta.Addr = 0x1000;
+  meta.Size = 32;
+
+  GwpAsanCrashDataTest crash_data(gwp_asan::Error::INVALID_FREE, &meta);
+  crash_data.SetCrashAddress(0x1021);
+
+  crash_data.DumpCause(&log_);
+  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
+  std::string tombstone_contents;
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_THAT(
+      tombstone_contents,
+      MatchesRegex(
+          "Cause: \\[GWP-ASan\\]: Invalid \\(Wild\\) Free, 33 bytes right of a 32-byte "
+          "allocation at 0x[a-fA-F0-9]+\n"));
+}
+
diff --git a/debuggerd/libdebuggerd/tombstone.cpp b/debuggerd/libdebuggerd/tombstone.cpp
index d246722..fd52e81 100644
--- a/debuggerd/libdebuggerd/tombstone.cpp
+++ b/debuggerd/libdebuggerd/tombstone.cpp
@@ -52,13 +52,14 @@
 #include <unwindstack/Regs.h>
 #include <unwindstack/Unwinder.h>
 
-// Needed to get DEBUGGER_SIGNAL.
-#include "debuggerd/handler.h"
-
 #include "libdebuggerd/backtrace.h"
+#include "libdebuggerd/gwp_asan.h"
 #include "libdebuggerd/open_files_list.h"
 #include "libdebuggerd/utility.h"
 
+#include "gwp_asan/common.h"
+#include "gwp_asan/crash_handler.h"
+
 using android::base::GetBoolProperty;
 using android::base::GetProperty;
 using android::base::StringPrintf;
@@ -86,7 +87,39 @@
   _LOG(log, logtype::HEADER, "Timestamp: %s\n", buf);
 }
 
-static void dump_probable_cause(log_t* log, const siginfo_t* si, unwindstack::Maps* maps) {
+static std::string get_stack_overflow_cause(uint64_t fault_addr, uint64_t sp,
+                                            unwindstack::Maps* maps) {
+  static constexpr uint64_t kMaxDifferenceBytes = 256;
+  uint64_t difference;
+  if (sp >= fault_addr) {
+    difference = sp - fault_addr;
+  } else {
+    difference = fault_addr - sp;
+  }
+  if (difference <= kMaxDifferenceBytes) {
+    // The faulting address is close to the current sp, check if the sp
+    // indicates a stack overflow.
+    // On arm, the sp does not get updated when the instruction faults.
+    // In this case, the sp will still be in a valid map, which is the
+    // last case below.
+    // On aarch64, the sp does get updated when the instruction faults.
+    // In this case, the sp will be in either an invalid map if triggered
+    // on the main thread, or in a guard map if in another thread, which
+    // will be the first case or second case from below.
+    unwindstack::MapInfo* map_info = maps->Find(sp);
+    if (map_info == nullptr) {
+      return "stack pointer is in a non-existent map; likely due to stack overflow.";
+    } else if ((map_info->flags & (PROT_READ | PROT_WRITE)) != (PROT_READ | PROT_WRITE)) {
+      return "stack pointer is not in a rw map; likely due to stack overflow.";
+    } else if ((sp - map_info->start) <= kMaxDifferenceBytes) {
+      return "stack pointer is close to top of stack; likely stack overflow.";
+    }
+  }
+  return "";
+}
+
+static void dump_probable_cause(log_t* log, const siginfo_t* si, unwindstack::Maps* maps,
+                                unwindstack::Regs* regs) {
   std::string cause;
   if (si->si_signo == SIGSEGV && si->si_code == SEGV_MAPERR) {
     if (si->si_addr < reinterpret_cast<void*>(4096)) {
@@ -101,11 +134,16 @@
       cause = "call to kuser_memory_barrier";
     } else if (si->si_addr == reinterpret_cast<void*>(0xffff0f60)) {
       cause = "call to kuser_cmpxchg64";
+    } else {
+      cause = get_stack_overflow_cause(reinterpret_cast<uint64_t>(si->si_addr), regs->sp(), maps);
     }
   } else if (si->si_signo == SIGSEGV && si->si_code == SEGV_ACCERR) {
-    unwindstack::MapInfo* map_info = maps->Find(reinterpret_cast<uint64_t>(si->si_addr));
+    uint64_t fault_addr = reinterpret_cast<uint64_t>(si->si_addr);
+    unwindstack::MapInfo* map_info = maps->Find(fault_addr);
     if (map_info != nullptr && map_info->flags == PROT_EXEC) {
       cause = "execute-only (no-read) memory access error; likely due to data in .text.";
+    } else {
+      cause = get_stack_overflow_cause(fault_addr, regs->sp(), maps);
     }
   } else if (si->si_signo == SIGSYS && si->si_code == SYS_SECCOMP) {
     cause = StringPrintf("seccomp prevented call to disallowed %s system call %d", ABI_STRING,
@@ -154,106 +192,6 @@
   _LOG(log, logtype::HEADER, "uid: %d\n", thread_info.uid);
 }
 
-static void dump_stack_segment(log_t* log, unwindstack::Maps* maps, unwindstack::Memory* memory,
-                               uint64_t* sp, size_t words, int label) {
-  // Read the data all at once.
-  word_t stack_data[words];
-
-  // TODO: Do we need to word align this for crashes caused by a misaligned sp?
-  //       The process_vm_readv implementation of Memory should handle this appropriately?
-  size_t bytes_read = memory->Read(*sp, stack_data, sizeof(word_t) * words);
-  words = bytes_read / sizeof(word_t);
-  std::string line;
-  for (size_t i = 0; i < words; i++) {
-    line = "    ";
-    if (i == 0 && label >= 0) {
-      // Print the label once.
-      line += StringPrintf("#%02d  ", label);
-    } else {
-      line += "     ";
-    }
-    line += StringPrintf("%" PRIPTR "  %" PRIPTR, *sp, static_cast<uint64_t>(stack_data[i]));
-
-    unwindstack::MapInfo* map_info = maps->Find(stack_data[i]);
-    if (map_info != nullptr && !map_info->name.empty()) {
-      line += "  " + map_info->name;
-      std::string func_name;
-      uint64_t func_offset = 0;
-      if (map_info->GetFunctionName(stack_data[i], &func_name, &func_offset)) {
-        line += " (" + func_name;
-        if (func_offset) {
-          line += StringPrintf("+%" PRIu64, func_offset);
-        }
-        line += ')';
-      }
-    }
-    _LOG(log, logtype::STACK, "%s\n", line.c_str());
-
-    *sp += sizeof(word_t);
-  }
-}
-
-static void dump_stack(log_t* log, const std::vector<unwindstack::FrameData>& frames,
-                       unwindstack::Maps* maps, unwindstack::Memory* memory) {
-  size_t first = 0, last;
-  for (size_t i = 0; i < frames.size(); i++) {
-    if (frames[i].sp) {
-      if (!first) {
-        first = i+1;
-      }
-      last = i;
-    }
-  }
-
-  if (!first) {
-    return;
-  }
-  first--;
-
-  // Dump a few words before the first frame.
-  uint64_t sp = frames[first].sp - STACK_WORDS * sizeof(word_t);
-  dump_stack_segment(log, maps, memory, &sp, STACK_WORDS, -1);
-
-#if defined(__LP64__)
-  static constexpr const char delimiter[] = "         ................  ................\n";
-#else
-  static constexpr const char delimiter[] = "         ........  ........\n";
-#endif
-
-  // Dump a few words from all successive frames.
-  for (size_t i = first; i <= last; i++) {
-    auto* frame = &frames[i];
-    if (sp != frame->sp) {
-      _LOG(log, logtype::STACK, delimiter);
-      sp = frame->sp;
-    }
-    if (i != last) {
-      // Print stack data up to the stack from the next frame.
-      size_t words;
-      uint64_t next_sp = frames[i + 1].sp;
-      if (next_sp < sp) {
-        // The next frame is probably using a completely different stack,
-        // so dump the max from this stack.
-        words = STACK_WORDS;
-      } else {
-        words = (next_sp - sp) / sizeof(word_t);
-        if (words == 0) {
-          // The sp is the same as the next frame, print at least
-          // one line for this frame.
-          words = 1;
-        } else if (words > STACK_WORDS) {
-          words = STACK_WORDS;
-        }
-      }
-      dump_stack_segment(log, maps, memory, &sp, words, i);
-    } else {
-      // Print some number of words past the last stack frame since we
-      // don't know how large the stack is.
-      dump_stack_segment(log, maps, memory, &sp, STACK_WORDS, i);
-    }
-  }
-}
-
 static std::string get_addr_string(uint64_t addr) {
   std::string addr_str;
 #if defined(__LP64__)
@@ -391,7 +329,7 @@
   std::vector<std::pair<std::string, uint64_t>> special_row;
 
 #if defined(__arm__) || defined(__aarch64__)
-  static constexpr const char* special_registers[] = {"ip", "lr", "sp", "pc"};
+  static constexpr const char* special_registers[] = {"ip", "lr", "sp", "pc", "pst"};
 #elif defined(__i386__)
   static constexpr const char* special_registers[] = {"ebp", "esp", "eip"};
 #elif defined(__x86_64__)
@@ -438,7 +376,8 @@
 }
 
 static bool dump_thread(log_t* log, unwindstack::Unwinder* unwinder, const ThreadInfo& thread_info,
-                        uint64_t abort_msg_address, bool primary_thread) {
+                        uint64_t abort_msg_address, bool primary_thread,
+                        const GwpAsanCrashData& gwp_asan_crash_data) {
   log->current_tid = thread_info.tid;
   if (!primary_thread) {
     _LOG(log, logtype::THREAD, "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
@@ -447,7 +386,13 @@
 
   if (thread_info.siginfo) {
     dump_signal_info(log, thread_info, unwinder->GetProcessMemory().get());
-    dump_probable_cause(log, thread_info.siginfo, unwinder->GetMaps());
+  }
+
+  if (primary_thread && gwp_asan_crash_data.CrashIsMine()) {
+    gwp_asan_crash_data.DumpCause(log);
+  } else if (thread_info.siginfo) {
+    dump_probable_cause(log, thread_info.siginfo, unwinder->GetMaps(),
+                        thread_info.registers.get());
   }
 
   if (primary_thread) {
@@ -465,12 +410,17 @@
   } else {
     _LOG(log, logtype::BACKTRACE, "\nbacktrace:\n");
     log_backtrace(log, unwinder, "    ");
-
-    _LOG(log, logtype::STACK, "\nstack:\n");
-    dump_stack(log, unwinder->frames(), unwinder->GetMaps(), unwinder->GetProcessMemory().get());
   }
 
   if (primary_thread) {
+    if (gwp_asan_crash_data.HasDeallocationTrace()) {
+      gwp_asan_crash_data.DumpDeallocationTrace(log, unwinder);
+    }
+
+    if (gwp_asan_crash_data.HasAllocationTrace()) {
+      gwp_asan_crash_data.DumpAllocationTrace(log, unwinder);
+    }
+
     unwindstack::Maps* maps = unwinder->GetMaps();
     dump_memory_and_code(log, maps, unwinder->GetProcessMemory().get(),
                          thread_info.registers.get());
@@ -558,7 +508,7 @@
       }
       AndroidLogEntry e;
       char buf[512];
-      if (android_log_processBinaryLogBuffer(&log_entry.entry_v1, &e, g_eventTagMap, buf,
+      if (android_log_processBinaryLogBuffer(&log_entry.entry, &e, g_eventTagMap, buf,
                                              sizeof(buf)) == 0) {
         _LOG(log, logtype::LOGS, "%s.%03d %5d %5d %c %-8.*s: %s\n", timeBuf,
              log_entry.entry.nsec / 1000000, log_entry.entry.pid, log_entry.entry.tid, 'I',
@@ -652,13 +602,14 @@
   }
 
   engrave_tombstone(unique_fd(dup(tombstone_fd)), &unwinder, threads, tid, abort_msg_address,
-                    nullptr, nullptr);
+                    nullptr, nullptr, 0u, 0u);
 }
 
 void engrave_tombstone(unique_fd output_fd, unwindstack::Unwinder* unwinder,
                        const std::map<pid_t, ThreadInfo>& threads, pid_t target_thread,
                        uint64_t abort_msg_address, OpenFilesList* open_files,
-                       std::string* amfd_data) {
+                       std::string* amfd_data, uintptr_t gwp_asan_state_ptr,
+                       uintptr_t gwp_asan_metadata_ptr) {
   // don't copy log messages to tombstone unless this is a dev device
   bool want_logs = android::base::GetBoolProperty("ro.debuggable", false);
 
@@ -676,7 +627,13 @@
   if (it == threads.end()) {
     LOG(FATAL) << "failed to find target thread";
   }
-  dump_thread(&log, unwinder, it->second, abort_msg_address, true);
+
+  GwpAsanCrashData gwp_asan_crash_data(unwinder->GetProcessMemory().get(),
+                                       gwp_asan_state_ptr,
+                                       gwp_asan_metadata_ptr, it->second);
+
+  dump_thread(&log, unwinder, it->second, abort_msg_address, true,
+              gwp_asan_crash_data);
 
   if (want_logs) {
     dump_logs(&log, it->second.pid, 50);
@@ -687,7 +644,7 @@
       continue;
     }
 
-    dump_thread(&log, unwinder, thread_info, 0, false);
+    dump_thread(&log, unwinder, thread_info, 0, false, gwp_asan_crash_data);
   }
 
   if (open_files) {
diff --git a/debuggerd/libdebuggerd/utility.cpp b/debuggerd/libdebuggerd/utility.cpp
index 9b2779a..0a1d2a4 100644
--- a/debuggerd/libdebuggerd/utility.cpp
+++ b/debuggerd/libdebuggerd/utility.cpp
@@ -35,6 +35,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
+#include <bionic/reserved_signals.h>
 #include <debuggerd/handler.h>
 #include <log/log.h>
 #include <unwindstack/Memory.h>
@@ -67,6 +68,14 @@
 
 __attribute__((__weak__, visibility("default")))
 void _LOG(log_t* log, enum logtype ltype, const char* fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  _VLOG(log, ltype, fmt, ap);
+  va_end(ap);
+}
+
+__attribute__((__weak__, visibility("default")))
+void _VLOG(log_t* log, enum logtype ltype, const char* fmt, va_list ap) {
   bool write_to_tombstone = (log->tfd != -1);
   bool write_to_logcat = is_allowed_in_logcat(ltype)
                       && log->crashed_tid != -1
@@ -75,10 +84,7 @@
   static bool write_to_kmsg = should_write_to_kmsg();
 
   std::string msg;
-  va_list ap;
-  va_start(ap, fmt);
   android::base::StringAppendV(&msg, fmt, ap);
-  va_end(ap);
 
   if (msg.empty()) return;
 
@@ -291,7 +297,8 @@
     case SIGSTOP: return "SIGSTOP";
     case SIGSYS: return "SIGSYS";
     case SIGTRAP: return "SIGTRAP";
-    case DEBUGGER_SIGNAL: return "<debuggerd signal>";
+    case BIONIC_SIGNAL_DEBUGGER:
+      return "<debuggerd signal>";
     default: return "?";
   }
 }
diff --git a/debuggerd/protocol.h b/debuggerd/protocol.h
index bfd0fbb..bf53864 100644
--- a/debuggerd/protocol.h
+++ b/debuggerd/protocol.h
@@ -95,10 +95,16 @@
   uintptr_t fdsan_table_address;
 };
 
+struct __attribute__((__packed__)) CrashInfoDataV3 : public CrashInfoDataV2 {
+  uintptr_t gwp_asan_state;
+  uintptr_t gwp_asan_metadata;
+};
+
 struct __attribute__((__packed__)) CrashInfo {
   CrashInfoHeader header;
   union {
     CrashInfoDataV1 v1;
     CrashInfoDataV2 v2;
+    CrashInfoDataV3 v3;
   } data;
 };
diff --git a/debuggerd/tombstoned/tombstoned.cpp b/debuggerd/tombstoned/tombstoned.cpp
index bbeb181..d09b8e8 100644
--- a/debuggerd/tombstoned/tombstoned.cpp
+++ b/debuggerd/tombstoned/tombstoned.cpp
@@ -100,7 +100,7 @@
 
   static CrashQueue* for_tombstones() {
     static CrashQueue queue("/data/tombstones", "tombstone_" /* file_name_prefix */,
-                            GetIntProperty("tombstoned.max_tombstone_count", 10),
+                            GetIntProperty("tombstoned.max_tombstone_count", 32),
                             1 /* max_concurrent_dumps */);
     return &queue;
   }
diff --git a/debuggerd/tombstoned/tombstoned.rc b/debuggerd/tombstoned/tombstoned.rc
index 53ef01c..b4a1e71 100644
--- a/debuggerd/tombstoned/tombstoned.rc
+++ b/debuggerd/tombstoned/tombstoned.rc
@@ -2,10 +2,10 @@
     user tombstoned
     group system
 
-    # Don't start tombstoned until after the real /data is mounted.
-    class late_start
-
     socket tombstoned_crash seqpacket 0666 system system
     socket tombstoned_intercept seqpacket 0666 system system
     socket tombstoned_java_trace seqpacket 0666 system system
     writepid /dev/cpuset/system-background/tasks
+
+on post-fs-data
+    start tombstoned
diff --git a/demangle/Android.bp b/demangle/Android.bp
deleted file mode 100644
index fd79cf8..0000000
--- a/demangle/Android.bp
+++ /dev/null
@@ -1,87 +0,0 @@
-//
-// Copyright (C) 2017 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_defaults {
-    name: "libdemangle_defaults",
-
-    host_supported: true,
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-Wextra",
-    ],
-
-    target: {
-        linux_bionic: {
-            enabled: true,
-        },
-    },
-}
-
-cc_library {
-    name: "libdemangle",
-    defaults: ["libdemangle_defaults"],
-    vendor_available: true,
-    recovery_available: true,
-
-    srcs: [
-        "Demangler.cpp",
-    ],
-
-    local_include_dirs: [
-        "include",
-    ],
-
-    export_include_dirs: [
-        "include",
-    ],
-}
-
-cc_binary {
-    name: "demangle",
-    defaults: ["libdemangle_defaults"],
-    srcs: ["demangle.cpp"],
-    host_supported: true,
-
-    shared_libs: ["libdemangle"],
-}
-
-//-------------------------------------------------------------------------
-// Unit Tests
-//-------------------------------------------------------------------------
-cc_test {
-    name: "libdemangle_test",
-    defaults: ["libdemangle_defaults"],
-
-    srcs: [
-        "DemangleTest.cpp",
-    ],
-
-    cflags: [
-        "-O0",
-        "-g",
-    ],
-
-    shared_libs: [
-        "libdemangle",
-    ],
-
-    test_suites: ["device-tests"],
-    required: [
-        "libdemangle",
-    ],
-}
diff --git a/demangle/Android.mk b/demangle/Android.mk
deleted file mode 100644
index d8082a9..0000000
--- a/demangle/Android.mk
+++ /dev/null
@@ -1,31 +0,0 @@
-#
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := demangle_fuzzer
-LOCAL_SRC_FILES := \
-    Demangler.cpp \
-    demangle_fuzzer.cpp \
-
-LOCAL_CFLAGS := \
-    -Wall \
-    -Werror \
-    -Wextra \
-
-include $(BUILD_FUZZ_TEST)
diff --git a/demangle/DemangleTest.cpp b/demangle/DemangleTest.cpp
deleted file mode 100644
index 1787031..0000000
--- a/demangle/DemangleTest.cpp
+++ /dev/null
@@ -1,555 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdlib.h>
-
-#include <gtest/gtest.h>
-
-#include <demangle.h>
-
-#include "Demangler.h"
-
-TEST(DemangleTest, IllegalArgumentModifiers) {
-  Demangler demangler;
-
-  ASSERT_EQ("_Zpp4FUNKK", demangler.Parse("_Zpp4FUNKK"));
-  ASSERT_EQ("_Zpp4FUNVV", demangler.Parse("_Zpp4FUNVV"));
-}
-
-TEST(DemangleTest, VoidArgument) {
-  Demangler demangler;
-
-  ASSERT_EQ("func()", demangler.Parse("_ZN4funcEv"));
-  ASSERT_EQ("func(void&)", demangler.Parse("_ZN4funcERv"));
-  ASSERT_EQ("func(void, void)", demangler.Parse("_ZN4funcEvv"));
-  ASSERT_EQ("func(void*)", demangler.Parse("_ZN4funcEPv"));
-  ASSERT_EQ("func(void const)", demangler.Parse("_ZN4funcEKv"));
-  ASSERT_EQ("func(void volatile)", demangler.Parse("_ZN4funcEVv"));
-}
-
-TEST(DemangleTest, ArgumentModifiers) {
-  Demangler demangler;
-
-  ASSERT_EQ("func(char)", demangler.Parse("_ZN4funcEc"));
-  ASSERT_EQ("func(char*)", demangler.Parse("_ZN4funcEPc"));
-  ASSERT_EQ("func(char**)", demangler.Parse("_ZN4funcEPPc"));
-  ASSERT_EQ("func(char***)", demangler.Parse("_ZN4funcEPPPc"));
-  ASSERT_EQ("func(char&)", demangler.Parse("_ZN4funcERc"));
-  ASSERT_EQ("func(char*&)", demangler.Parse("_ZN4funcERPc"));
-  ASSERT_EQ("func(char&)", demangler.Parse("_ZN4funcERRc"));
-  ASSERT_EQ("func(char*&*)", demangler.Parse("_ZN4funcEPRPc"));
-  ASSERT_EQ("func(char**&)", demangler.Parse("_ZN4funcERRPPc"));
-  ASSERT_EQ("func(char const)", demangler.Parse("_ZN4funcEKc"));
-  ASSERT_EQ("func(char volatile)", demangler.Parse("_ZN4funcEVc"));
-  ASSERT_EQ("func(char volatile const)", demangler.Parse("_ZN4funcEKVc"));
-  ASSERT_EQ("func(char const volatile)", demangler.Parse("_ZN4funcEVKc"));
-  ASSERT_EQ("func(char const* volatile&)", demangler.Parse("_ZN4funcERVPKc"));
-  ASSERT_EQ("func(void, char, short)", demangler.Parse("_ZN4funcEvcs"));
-  ASSERT_EQ("func(void*, char&, short&*)", demangler.Parse("_ZN4funcEPvRcPRs"));
-}
-
-TEST(DemangleTest, FunctionModifiers) {
-  Demangler demangler;
-
-  ASSERT_EQ("func() const", demangler.Parse("_ZNK4funcEv"));
-  ASSERT_EQ("func() volatile", demangler.Parse("_ZNV4funcEv"));
-  ASSERT_EQ("func() volatile const", demangler.Parse("_ZNKV4funcEv"));
-  ASSERT_EQ("func() const volatile", demangler.Parse("_ZNVK4funcEv"));
-}
-
-TEST(DemangleTest, MultiplePartsInName) {
-  Demangler demangler;
-
-  ASSERT_EQ("one::two()", demangler.Parse("_ZN3one3twoEv"));
-  ASSERT_EQ("one::two::three()", demangler.Parse("_ZN3one3two5threeEv"));
-  ASSERT_EQ("one::two::three::four()", demangler.Parse("_ZN3one3two5three4fourEv"));
-  ASSERT_EQ("one::two::three::four::five()", demangler.Parse("_ZN3one3two5three4four4fiveEv"));
-  ASSERT_EQ("one(two::three::four::five)", demangler.Parse("_ZN3oneEN3two5three4four4fiveE"));
-}
-
-TEST(DemangleTest, AnonymousNamespace) {
-  Demangler demangler;
-
-  ASSERT_EQ("(anonymous namespace)::two()", demangler.Parse("_ZN12_GLOBAL__N_13twoEv"));
-  ASSERT_EQ("one::two((anonymous namespace))", demangler.Parse("_ZN3one3twoE12_GLOBAL__N_1"));
-}
-
-TEST(DemangleTest, DestructorValues) {
-  Demangler demangler;
-
-  ASSERT_EQ("one::two::~two()", demangler.Parse("_ZN3one3twoD0Ev"));
-  ASSERT_EQ("one::two::~two()", demangler.Parse("_ZN3one3twoD1Ev"));
-  ASSERT_EQ("one::two::~two()", demangler.Parse("_ZN3one3twoD2Ev"));
-  ASSERT_EQ("one::two::~two()", demangler.Parse("_ZN3one3twoD5Ev"));
-  ASSERT_EQ("one::two::three::~three()", demangler.Parse("_ZN3one3two5threeD0Ev"));
-
-  ASSERT_EQ("_ZN3one3twoD3Ev", demangler.Parse("_ZN3one3twoD3Ev"));
-  ASSERT_EQ("_ZN3one3twoD4Ev", demangler.Parse("_ZN3one3twoD4Ev"));
-  ASSERT_EQ("_ZN3one3twoD6Ev", demangler.Parse("_ZN3one3twoD6Ev"));
-  ASSERT_EQ("_ZN3one3twoD7Ev", demangler.Parse("_ZN3one3twoD7Ev"));
-  ASSERT_EQ("_ZN3one3twoD8Ev", demangler.Parse("_ZN3one3twoD8Ev"));
-  ASSERT_EQ("_ZN3one3twoD9Ev", demangler.Parse("_ZN3one3twoD9Ev"));
-
-  ASSERT_EQ("one::two<three::four>::~two()", demangler.Parse("_ZN3one3twoIN5three4fourEED2Ev"));
-}
-
-TEST(DemangleTest, ConstructorValues) {
-  Demangler demangler;
-
-  ASSERT_EQ("one::two::two()", demangler.Parse("_ZN3one3twoC1Ev"));
-  ASSERT_EQ("one::two::two()", demangler.Parse("_ZN3one3twoC2Ev"));
-  ASSERT_EQ("one::two::two()", demangler.Parse("_ZN3one3twoC3Ev"));
-  ASSERT_EQ("one::two::two()", demangler.Parse("_ZN3one3twoC5Ev"));
-  ASSERT_EQ("one::two::three::three()", demangler.Parse("_ZN3one3two5threeC1Ev"));
-
-  ASSERT_EQ("_ZN3one3twoC0Ev", demangler.Parse("_ZN3one3twoC0Ev"));
-  ASSERT_EQ("_ZN3one3twoC4Ev", demangler.Parse("_ZN3one3twoC4Ev"));
-  ASSERT_EQ("_ZN3one3twoC6Ev", demangler.Parse("_ZN3one3twoC6Ev"));
-  ASSERT_EQ("_ZN3one3twoC7Ev", demangler.Parse("_ZN3one3twoC7Ev"));
-  ASSERT_EQ("_ZN3one3twoC8Ev", demangler.Parse("_ZN3one3twoC8Ev"));
-  ASSERT_EQ("_ZN3one3twoC9Ev", demangler.Parse("_ZN3one3twoC9Ev"));
-
-  ASSERT_EQ("one::two<three::four>::two()", demangler.Parse("_ZN3one3twoIN5three4fourEEC1Ev"));
-}
-
-TEST(DemangleTest, OperatorValues) {
-  Demangler demangler;
-
-  ASSERT_EQ("operator&&()", demangler.Parse("_Zaav"));
-  ASSERT_EQ("operator&()", demangler.Parse("_Zadv"));
-  ASSERT_EQ("operator&()", demangler.Parse("_Zanv"));
-  ASSERT_EQ("operator&=()", demangler.Parse("_ZaNv"));
-  ASSERT_EQ("operator=()", demangler.Parse("_ZaSv"));
-  ASSERT_EQ("operator()()", demangler.Parse("_Zclv"));
-  ASSERT_EQ("operator,()", demangler.Parse("_Zcmv"));
-  ASSERT_EQ("operator~()", demangler.Parse("_Zcov"));
-  ASSERT_EQ("operator delete[]()", demangler.Parse("_Zdav"));
-  ASSERT_EQ("operator*()", demangler.Parse("_Zdev"));
-  ASSERT_EQ("operator delete()", demangler.Parse("_Zdlv"));
-  ASSERT_EQ("operator/()", demangler.Parse("_Zdvv"));
-  ASSERT_EQ("operator/=()", demangler.Parse("_ZdVv"));
-  ASSERT_EQ("operator^()", demangler.Parse("_Zeov"));
-  ASSERT_EQ("operator^=()", demangler.Parse("_ZeOv"));
-  ASSERT_EQ("operator==()", demangler.Parse("_Zeqv"));
-  ASSERT_EQ("operator>=()", demangler.Parse("_Zgev"));
-  ASSERT_EQ("operator>()", demangler.Parse("_Zgtv"));
-  ASSERT_EQ("operator[]()", demangler.Parse("_Zixv"));
-  ASSERT_EQ("operator<=()", demangler.Parse("_Zlev"));
-  ASSERT_EQ("operator<<()", demangler.Parse("_Zlsv"));
-  ASSERT_EQ("operator<<=()", demangler.Parse("_ZlSv"));
-  ASSERT_EQ("operator<()", demangler.Parse("_Zltv"));
-  ASSERT_EQ("operator-()", demangler.Parse("_Zmiv"));
-  ASSERT_EQ("operator-=()", demangler.Parse("_ZmIv"));
-  ASSERT_EQ("operator*()", demangler.Parse("_Zmlv"));
-  ASSERT_EQ("operator*=()", demangler.Parse("_ZmLv"));
-  ASSERT_EQ("operator--()", demangler.Parse("_Zmmv"));
-  ASSERT_EQ("operator new[]()", demangler.Parse("_Znav"));
-  ASSERT_EQ("operator!=()", demangler.Parse("_Znev"));
-  ASSERT_EQ("operator-()", demangler.Parse("_Zngv"));
-  ASSERT_EQ("operator!()", demangler.Parse("_Zntv"));
-  ASSERT_EQ("operator new()", demangler.Parse("_Znwv"));
-  ASSERT_EQ("operator||()", demangler.Parse("_Zoov"));
-  ASSERT_EQ("operator|()", demangler.Parse("_Zorv"));
-  ASSERT_EQ("operator|=()", demangler.Parse("_ZoRv"));
-  ASSERT_EQ("operator->*()", demangler.Parse("_Zpmv"));
-  ASSERT_EQ("operator+()", demangler.Parse("_Zplv"));
-  ASSERT_EQ("operator+=()", demangler.Parse("_ZpLv"));
-  ASSERT_EQ("operator++()", demangler.Parse("_Zppv"));
-  ASSERT_EQ("operator+()", demangler.Parse("_Zpsv"));
-  ASSERT_EQ("operator->()", demangler.Parse("_Zptv"));
-  ASSERT_EQ("operator?()", demangler.Parse("_Zquv"));
-  ASSERT_EQ("operator%()", demangler.Parse("_Zrmv"));
-  ASSERT_EQ("operator%=()", demangler.Parse("_ZrMv"));
-  ASSERT_EQ("operator>>()", demangler.Parse("_Zrsv"));
-  ASSERT_EQ("operator>>=()", demangler.Parse("_ZrSv"));
-
-  // Spot check using an operator as part of function name.
-  ASSERT_EQ("operator&&()", demangler.Parse("_ZNaaEv"));
-  ASSERT_EQ("operator++()", demangler.Parse("_ZNppEv"));
-  ASSERT_EQ("one::operator++()", demangler.Parse("_ZN3oneppEv"));
-
-  // Spot check using an operator in an argument name.
-  ASSERT_EQ("operator+(operator|=)", demangler.Parse("_ZNpsENoRE"));
-  ASSERT_EQ("operator==()", demangler.Parse("_Zeqv"));
-  ASSERT_EQ("one(arg1::operator|=, arg2::operator==)",
-            demangler.Parse("_ZN3oneEN4arg1oREN4arg2eqE"));
-}
-
-TEST(DemangleTest, FunctionStartsWithNumber) {
-  Demangler demangler;
-
-  ASSERT_EQ("value(char, int)", demangler.Parse("_Z5valueci"));
-  ASSERT_EQ("abcdefjklmn(signed char)", demangler.Parse("_Z11abcdefjklmna"));
-  ASSERT_EQ("value(one, signed char)", demangler.Parse("_Z5value3onea"));
-}
-
-TEST(DemangleTest, FunctionStartsWithLPlusNumber) {
-  Demangler demangler;
-
-  ASSERT_EQ("value(char, int)", demangler.Parse("_ZL5valueci"));
-  ASSERT_EQ("abcdefjklmn(signed char)", demangler.Parse("_ZL11abcdefjklmna"));
-  ASSERT_EQ("value(one, signed char)", demangler.Parse("_ZL5value3onea"));
-}
-
-TEST(DemangleTest, StdTypes) {
-  Demangler demangler;
-
-  ASSERT_EQ("std::one", demangler.Parse("_ZNSt3oneE"));
-  ASSERT_EQ("std::one(std::two)", demangler.Parse("_ZNSt3oneESt3two"));
-  ASSERT_EQ("std::std::one(std::two)", demangler.Parse("_ZNStSt3oneESt3two"));
-  ASSERT_EQ("std()", demangler.Parse("_ZNStEv"));
-  ASSERT_EQ("one::std::std::two::~two(one::std::std::two)",
-            demangler.Parse("_ZN3oneStSt3twoD0ES0_"));
-
-  ASSERT_EQ("std::allocator", demangler.Parse("_ZNSaE"));
-  ASSERT_EQ("std::basic_string", demangler.Parse("_ZNSbE"));
-  ASSERT_EQ("_ZNScE", demangler.Parse("_ZNScE"));
-  ASSERT_EQ("std::iostream", demangler.Parse("_ZNSdE"));
-  ASSERT_EQ("_ZNSeE", demangler.Parse("_ZNSeE"));
-  ASSERT_EQ("_ZNSfE", demangler.Parse("_ZNSfE"));
-  ASSERT_EQ("_ZNSgE", demangler.Parse("_ZNSgE"));
-  ASSERT_EQ("_ZNShE", demangler.Parse("_ZNShE"));
-  ASSERT_EQ("std::istream", demangler.Parse("_ZNSiE"));
-  ASSERT_EQ("_ZNSjE", demangler.Parse("_ZNSjE"));
-  ASSERT_EQ("_ZNSkE", demangler.Parse("_ZNSkE"));
-  ASSERT_EQ("_ZNSlE", demangler.Parse("_ZNSlE"));
-  ASSERT_EQ("_ZNSmE", demangler.Parse("_ZNSmE"));
-  ASSERT_EQ("_ZNSnE", demangler.Parse("_ZNSnE"));
-  ASSERT_EQ("std::ostream", demangler.Parse("_ZNSoE"));
-  ASSERT_EQ("_ZNSpE", demangler.Parse("_ZNSpE"));
-  ASSERT_EQ("_ZNSqE", demangler.Parse("_ZNSqE"));
-  ASSERT_EQ("_ZNSrE", demangler.Parse("_ZNSrE"));
-  ASSERT_EQ("std::string", demangler.Parse("_ZNSsE"));
-  ASSERT_EQ("_ZNSuE", demangler.Parse("_ZNSuE"));
-  ASSERT_EQ("_ZNSvE", demangler.Parse("_ZNSvE"));
-  ASSERT_EQ("_ZNSwE", demangler.Parse("_ZNSwE"));
-  ASSERT_EQ("_ZNSxE", demangler.Parse("_ZNSxE"));
-  ASSERT_EQ("_ZNSyE", demangler.Parse("_ZNSyE"));
-  ASSERT_EQ("_ZNSzE", demangler.Parse("_ZNSzE"));
-}
-
-TEST(DemangleTest, SingleLetterArguments) {
-  Demangler demangler;
-
-  ASSERT_EQ("func(signed char)", demangler.Parse("_ZN4funcEa"));
-  ASSERT_EQ("func(bool)", demangler.Parse("_ZN4funcEb"));
-  ASSERT_EQ("func(char)", demangler.Parse("_ZN4funcEc"));
-  ASSERT_EQ("func(double)", demangler.Parse("_ZN4funcEd"));
-  ASSERT_EQ("func(long double)", demangler.Parse("_ZN4funcEe"));
-  ASSERT_EQ("func(float)", demangler.Parse("_ZN4funcEf"));
-  ASSERT_EQ("func(__float128)", demangler.Parse("_ZN4funcEg"));
-  ASSERT_EQ("func(unsigned char)", demangler.Parse("_ZN4funcEh"));
-  ASSERT_EQ("func(int)", demangler.Parse("_ZN4funcEi"));
-  ASSERT_EQ("func(unsigned int)", demangler.Parse("_ZN4funcEj"));
-  ASSERT_EQ("_ZN4funcEk", demangler.Parse("_ZN4funcEk"));
-  ASSERT_EQ("func(long)", demangler.Parse("_ZN4funcEl"));
-  ASSERT_EQ("func(unsigned long)", demangler.Parse("_ZN4funcEm"));
-  ASSERT_EQ("func(__int128)", demangler.Parse("_ZN4funcEn"));
-  ASSERT_EQ("func(unsigned __int128)", demangler.Parse("_ZN4funcEo"));
-  ASSERT_EQ("_ZN4funcEp", demangler.Parse("_ZN4funcEp"));
-  ASSERT_EQ("_ZN4funcEq", demangler.Parse("_ZN4funcEq"));
-  ASSERT_EQ("_ZN4funcEr", demangler.Parse("_ZN4funcEr"));
-  ASSERT_EQ("func(short)", demangler.Parse("_ZN4funcEs"));
-  ASSERT_EQ("func(unsigned short)", demangler.Parse("_ZN4funcEt"));
-  ASSERT_EQ("_ZN4funcEu", demangler.Parse("_ZN4funcEu"));
-  ASSERT_EQ("func()", demangler.Parse("_ZN4funcEv"));
-  ASSERT_EQ("func(wchar_t)", demangler.Parse("_ZN4funcEw"));
-  ASSERT_EQ("func(long long)", demangler.Parse("_ZN4funcEx"));
-  ASSERT_EQ("func(unsigned long long)", demangler.Parse("_ZN4funcEy"));
-  ASSERT_EQ("func(...)", demangler.Parse("_ZN4funcEz"));
-}
-
-TEST(DemangleTest, DArguments) {
-  Demangler demangler;
-
-  ASSERT_EQ("func(auto)", demangler.Parse("_ZN4funcEDa"));
-  ASSERT_EQ("_ZN4funcEDb", demangler.Parse("_ZN4funcEDb"));
-  ASSERT_EQ("_ZN4funcEDc", demangler.Parse("_ZN4funcEDc"));
-  ASSERT_EQ("func(decimal64)", demangler.Parse("_ZN4funcEDd"));
-  ASSERT_EQ("func(decimal128)", demangler.Parse("_ZN4funcEDe"));
-  ASSERT_EQ("func(decimal32)", demangler.Parse("_ZN4funcEDf"));
-  ASSERT_EQ("_ZN4funcEDg", demangler.Parse("_ZN4funcEDg"));
-  ASSERT_EQ("func(half)", demangler.Parse("_ZN4funcEDh"));
-  ASSERT_EQ("func(char32_t)", demangler.Parse("_ZN4funcEDi"));
-  ASSERT_EQ("_ZN4funcEDj", demangler.Parse("_ZN4funcEDj"));
-  ASSERT_EQ("_ZN4funcEDk", demangler.Parse("_ZN4funcEDk"));
-  ASSERT_EQ("_ZN4funcEDl", demangler.Parse("_ZN4funcEDl"));
-  ASSERT_EQ("_ZN4funcEDm", demangler.Parse("_ZN4funcEDm"));
-  ASSERT_EQ("func(decltype(nullptr))", demangler.Parse("_ZN4funcEDn"));
-  ASSERT_EQ("_ZN4funcEDo", demangler.Parse("_ZN4funcEDo"));
-  ASSERT_EQ("_ZN4funcEDp", demangler.Parse("_ZN4funcEDp"));
-  ASSERT_EQ("_ZN4funcEDq", demangler.Parse("_ZN4funcEDq"));
-  ASSERT_EQ("_ZN4funcEDr", demangler.Parse("_ZN4funcEDr"));
-  ASSERT_EQ("func(char16_t)", demangler.Parse("_ZN4funcEDs"));
-  ASSERT_EQ("_ZN4funcEDt", demangler.Parse("_ZN4funcEDt"));
-  ASSERT_EQ("_ZN4funcEDu", demangler.Parse("_ZN4funcEDu"));
-  ASSERT_EQ("_ZN4funcEDv", demangler.Parse("_ZN4funcEDv"));
-  ASSERT_EQ("_ZN4funcEDw", demangler.Parse("_ZN4funcEDw"));
-  ASSERT_EQ("_ZN4funcEDx", demangler.Parse("_ZN4funcEDx"));
-  ASSERT_EQ("_ZN4funcEDy", demangler.Parse("_ZN4funcEDy"));
-  ASSERT_EQ("_ZN4funcEDz", demangler.Parse("_ZN4funcEDz"));
-}
-
-TEST(DemangleTest, FunctionArguments) {
-  Demangler demangler;
-
-  ASSERT_EQ("func(char ())", demangler.Parse("_ZN4funcEFcvE"));
-  ASSERT_EQ("func(char (*)())", demangler.Parse("_ZN4funcEPFcvE"));
-  ASSERT_EQ("func(char (&)())", demangler.Parse("_ZN4funcERFcvE"));
-  ASSERT_EQ("func(char (&)())", demangler.Parse("_ZN4funcERFcvE"));
-  ASSERT_EQ("func(char (*&)())", demangler.Parse("_ZN4funcERPFcvE"));
-  ASSERT_EQ("func(char (*)(int) const)", demangler.Parse("_ZN4funcEPKFciE"));
-  ASSERT_EQ("func(char (&)() const)", demangler.Parse("_ZN4funcERKFcvE"));
-  ASSERT_EQ("func(char (&)() volatile)", demangler.Parse("_ZN4funcERVFcvE"));
-  ASSERT_EQ("func(char (&)() volatile const)", demangler.Parse("_ZN4funcERKVFcvE"));
-  ASSERT_EQ("func(char (&)() const volatile)", demangler.Parse("_ZN4funcERVKFcvE"));
-  ASSERT_EQ("func(char (&)(int, signed char) const)", demangler.Parse("_ZN4funcERKFciaE"));
-  ASSERT_EQ("fake(char (&* volatile const)(void, void, signed char), signed char)",
-            demangler.Parse("_ZN4fakeEKVPRFcvvaEa"));
-}
-
-TEST(DemangleTest, TemplateFunction) {
-  Demangler demangler;
-
-  ASSERT_EQ("one<char>", demangler.Parse("_ZN3oneIcEE"));
-  ASSERT_EQ("one<void>", demangler.Parse("_ZN3oneIvEE"));
-  ASSERT_EQ("one<void*>", demangler.Parse("_ZN3oneIPvEE"));
-  ASSERT_EQ("one<void const>", demangler.Parse("_ZN3oneIKvEE"));
-  ASSERT_EQ("one<char, int, bool>", demangler.Parse("_ZN3oneIcibEE"));
-  ASSERT_EQ("one::two<three>", demangler.Parse("_ZN3one3twoIN5threeEEE"));
-  ASSERT_EQ("one<char, int, two::three>", demangler.Parse("_ZN3oneIciN3two5threeEEE"));
-  // Template within templates.
-  ASSERT_EQ("one::two<three<char, int>>", demangler.Parse("_ZN3one3twoIN5threeIciEEEE"));
-  ASSERT_EQ("one::two<three<char, four<int>>>", demangler.Parse("_ZN3one3twoIN5threeIcN4fourIiEEEEEE"));
-
-  ASSERT_EQ("one<char>", demangler.Parse("_Z3oneIcE"));
-  ASSERT_EQ("one<void>", demangler.Parse("_Z3oneIvE"));
-  ASSERT_EQ("one<void*>", demangler.Parse("_Z3oneIPvE"));
-  ASSERT_EQ("one<void const>", demangler.Parse("_Z3oneIKvE"));
-  ASSERT_EQ("one<char, int, bool>", demangler.Parse("_Z3oneIcibE"));
-  ASSERT_EQ("one(two<three>)", demangler.Parse("_Z3one3twoIN5threeEE"));
-  ASSERT_EQ("one<char, int, two::three>", demangler.Parse("_Z3oneIciN3two5threeEE"));
-  // Template within templates.
-  ASSERT_EQ("one(two<three<char, int>>)", demangler.Parse("_Z3one3twoIN5threeIciEEE"));
-  ASSERT_EQ("one(two<three<char, four<int>>>)",
-            demangler.Parse("_Z3one3twoIN5threeIcN4fourIiEEEEE"));
-}
-
-TEST(DemangleTest, TemplateFunctionWithReturnType) {
-  Demangler demangler;
-
-  ASSERT_EQ("char one<int>(char)", demangler.Parse("_Z3oneIiEcc"));
-  ASSERT_EQ("void one<int>()", demangler.Parse("_Z3oneIiEvv"));
-  ASSERT_EQ("char one<int>()", demangler.Parse("_Z3oneIiEcv"));
-  ASSERT_EQ("char one<int>(void, void)", demangler.Parse("_Z3oneIiEcvv"));
-  ASSERT_EQ("char one<int>()", demangler.Parse("_ZN3oneIiEEcv"));
-  ASSERT_EQ("char one<int>(void, void)", demangler.Parse("_ZN3oneIiEEcvv"));
-}
-
-TEST(DemangleTest, TemplateArguments) {
-  Demangler demangler;
-
-  ASSERT_EQ("one(two<char>)", demangler.Parse("_ZN3oneE3twoIcE"));
-  ASSERT_EQ("one(two<char, void>)", demangler.Parse("_ZN3oneE3twoIcvE"));
-  ASSERT_EQ("one(two<char, void, three<four, int>>)",
-            demangler.Parse("_ZN3oneE3twoIcv5threeI4fouriEE"));
-}
-
-TEST(DemangleTest, SubstitutionUnderscore) {
-  Demangler demangler;
-
-  ASSERT_EQ("a::a", demangler.Parse("_ZN1aS_E"));
-  ASSERT_EQ("one::one", demangler.Parse("_ZN3oneS_E"));
-  ASSERT_EQ("one::two::one", demangler.Parse("_ZN3one3twoS_E"));
-  ASSERT_EQ("one::two::three::one", demangler.Parse("_ZN3one3two5threeS_E"));
-  ASSERT_EQ("one::two(one)", demangler.Parse("_ZN3one3twoES_"));
-  ASSERT_EQ("one::two(three::one)", demangler.Parse("_ZN3one3twoEN5threeS_E"));
-
-  // Special case that St is part of the saved value used in the substitution.
-  ASSERT_EQ("std::one::std::one", demangler.Parse("_ZNSt3oneS_E"));
-
-  // Multiple substitutions in the string.
-  ASSERT_EQ("one::one(one, one)", demangler.Parse("_ZN3oneS_ES_S_"));
-  ASSERT_EQ("std::one::two::std::one(std::one)", demangler.Parse("_ZNSt3one3twoS_ES_"));
-}
-
-TEST(DemangleTest, SubstitutionByNumber) {
-  Demangler demangler;
-
-  // Basic substitution.
-  ASSERT_EQ("a::b::c(a::b)", demangler.Parse("_ZN1a1b1cES0_"));
-  ASSERT_EQ("_ZN1a1b1cES1_", demangler.Parse("_ZN1a1b1cES1_"));
-  ASSERT_EQ("a::b::c::d(a::b::c)", demangler.Parse("_ZN1a1b1c1dES1_"));
-  ASSERT_EQ("a::b::c::d::e::f::g::h::i::j::k::l::m::n::o::p::q(a::b::c::d::e::f::g::h::i::j::k::l)",
-            demangler.Parse("_ZN1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1qESA_"));
-  ASSERT_EQ("a::b::c::d::e::f::g::h::i::j::k::l::m::n::o::p::q(a::b::c::d::e::f::g::h::i::j::k::l::m)",
-            demangler.Parse("_ZN1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1qESB_"));
-
-  // Verify argument modifiers are included in substitution list.
-  ASSERT_EQ("one::two(char&* volatile const, char&)", demangler.Parse("_ZN3one3twoEKVPRcS0_"));
-  ASSERT_EQ("one::two(char&* volatile const, char&*)", demangler.Parse("_ZN3one3twoEKVPRcS1_"));
-  ASSERT_EQ("one::two(char&* volatile const, char&* volatile const)",
-            demangler.Parse("_ZN3one3twoEKVPRcS2_"));
-  ASSERT_EQ("one::two(int&* volatile* const, int&)", demangler.Parse("_ZN3one3twoEKPVPRiS0_"));
-  ASSERT_EQ("one::two(int&* volatile const, int&*)", demangler.Parse("_ZN3one3twoEKVPRiS1_"));
-  ASSERT_EQ("one::two(int&* volatile const, int&* volatile const)",
-            demangler.Parse("_ZN3one3twoEKVPRiS2_"));
-
-  // Verify Constructor/Destructor does properly save from function name.
-  ASSERT_EQ("_ZN1a1bES0_", demangler.Parse("_ZN1a1bES0_"));
-  ASSERT_EQ("a::b::b(a::b)", demangler.Parse("_ZN1a1bC1ES0_"));
-  ASSERT_EQ("a::b::~b(a::b)", demangler.Parse("_ZN1a1bD0ES0_"));
-
-  // Make sure substitution values are not saved.
-  ASSERT_EQ("a::b::b(a::b, char*, char*)", demangler.Parse("_ZN1a1bC1ES0_PcS1_"));
-}
-
-TEST(DemangleTest, ComplexSubstitution) {
-  Demangler demangler;
-
-  ASSERT_EQ("one::two<one::three>::two()", demangler.Parse("_ZN3one3twoINS_5threeEEC1Ev"));
-  ASSERT_EQ("one::two::two(one::two const&, bool, one::three*)",
-            demangler.Parse("_ZN3one3twoC2ERKS0_bPNS_5threeE"));
-  ASSERT_EQ("one::two::three::four<one::five>::~four(one::two*)",
-            demangler.Parse("_ZN3one3two5three4fourINS_4fiveEED2EPS0_"));
-  ASSERT_EQ("one::two::three::four<one::five>::~four(one::two::three*)",
-            demangler.Parse("_ZN3one3two5three4fourINS_4fiveEED2EPS1_"));
-  ASSERT_EQ("one::two::three::four<one::five>::~four(one::two::three::four*)",
-            demangler.Parse("_ZN3one3two5three4fourINS_4fiveEED2EPS2_"));
-  ASSERT_EQ("one::two::three::four<one::five>::~four(one::five*)",
-            demangler.Parse("_ZN3one3two5three4fourINS_4fiveEED2EPS3_"));
-}
-
-TEST(DemangleTest, TemplateSubstitution) {
-  Demangler demangler;
-
-  ASSERT_EQ("void one<int, double>(int)", demangler.Parse("_ZN3oneIidEEvT_"));
-  ASSERT_EQ("void one<int, double>(double)", demangler.Parse("_ZN3oneIidEEvT0_"));
-  ASSERT_EQ("void one<int, double, char, void>(char)", demangler.Parse("_ZN3oneIidcvEEvT1_"));
-
-  ASSERT_EQ("void one<int, double>(int)", demangler.Parse("_Z3oneIidEvT_"));
-  ASSERT_EQ("void one<int, double>(double)", demangler.Parse("_Z3oneIidEvT0_"));
-  ASSERT_EQ("void one<int, double, char, void>(char)", demangler.Parse("_Z3oneIidcvEvT1_"));
-
-  ASSERT_EQ("void one<a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r>(l)",
-            demangler.Parse("_ZN3oneI1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1q1rEEvT10_"));
-  ASSERT_EQ("void one<a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r>(m)",
-            demangler.Parse("_ZN3oneI1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1q1rEEvT11_"));
-
-  ASSERT_EQ("void one<a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r>(l)",
-            demangler.Parse("_Z3oneI1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1q1rEvT10_"));
-  ASSERT_EQ("void one<a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r>(m)",
-            demangler.Parse("_Z3oneI1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1q1rEvT11_"));
-}
-
-TEST(DemangleTest, StringTooLong) {
-  Demangler demangler;
-
-  ASSERT_EQ("_ZN3one3twoC2ERKS0_bPNS_5threeE",
-            demangler.Parse("_ZN3one3twoC2ERKS0_bPNS_5threeE", 10));
-  ASSERT_EQ("_ZN3one3twoC2ERKS0_bPNS_5threeE",
-            demangler.Parse("_ZN3one3twoC2ERKS0_bPNS_5threeE", 30));
-  ASSERT_EQ("one::two::two(one::two const&, bool, one::three*)",
-            demangler.Parse("_ZN3one3twoC2ERKS0_bPNS_5threeE", 31));
-
-  // Check the length check only occurs after the two letter value
-  // has been processed.
-  ASSERT_EQ("one::two(auto)", demangler.Parse("_ZN3one3twoEDa", 15));
-  ASSERT_EQ("one::two(auto)", demangler.Parse("_ZN3one3twoEDa", 14));
-  ASSERT_EQ("one::two(auto)", demangler.Parse("_ZN3one3twoEDa", 13));
-  ASSERT_EQ("_ZN3one3twoEDa", demangler.Parse("_ZN3one3twoEDa", 12));
-}
-
-TEST(DemangleTest, BooleanLiterals) {
-  Demangler demangler;
-
-  ASSERT_EQ("one<true>", demangler.Parse("_ZN3oneILb1EEE"));
-  ASSERT_EQ("one<false>", demangler.Parse("_ZN3oneILb0EEE"));
-  ASSERT_EQ("one<false, true>", demangler.Parse("_ZN3oneILb0ELb1EEE"));
-
-  ASSERT_EQ("one<true>", demangler.Parse("_Z3oneILb1EE"));
-  ASSERT_EQ("one<false>", demangler.Parse("_Z3oneILb0EE"));
-  ASSERT_EQ("one<false, true>", demangler.Parse("_Z3oneILb0ELb1EE"));
-
-  ASSERT_EQ("one(two<three<four>, false, true>)",
-            demangler.Parse("_ZN3oneE3twoI5threeI4fourELb0ELb1EE"));
-}
-
-TEST(DemangleTest, non_virtual_thunk) {
-  Demangler demangler;
-
-  ASSERT_EQ("non-virtual thunk to one", demangler.Parse("_ZThn0_N3oneE"));
-  ASSERT_EQ("non-virtual thunk to two", demangler.Parse("_ZThn0_3two"));
-  ASSERT_EQ("non-virtual thunk to three", demangler.Parse("_ZTh0_5three"));
-  ASSERT_EQ("non-virtual thunk to four", demangler.Parse("_ZTh_4four"));
-  ASSERT_EQ("non-virtual thunk to five", demangler.Parse("_ZTh0123456789_4five"));
-  ASSERT_EQ("non-virtual thunk to six", demangler.Parse("_ZThn0123456789_3six"));
-
-  ASSERT_EQ("_ZThn0N3oneE", demangler.Parse("_ZThn0N3oneE"));
-  ASSERT_EQ("_ZThn03two", demangler.Parse("_ZThn03two"));
-  ASSERT_EQ("_ZTh05three", demangler.Parse("_ZTh05three"));
-  ASSERT_EQ("_ZTh4four", demangler.Parse("_ZTh4four"));
-  ASSERT_EQ("_ZTh01234567894five", demangler.Parse("_ZTh01234567894five"));
-  ASSERT_EQ("_ZThn01234567893six", demangler.Parse("_ZThn01234567893six"));
-  ASSERT_EQ("_ZT_N3oneE", demangler.Parse("_ZT_N3oneE"));
-  ASSERT_EQ("_ZT0_N3oneE", demangler.Parse("_ZT0_N3oneE"));
-  ASSERT_EQ("_ZTH_N3oneE", demangler.Parse("_ZTH_N3oneE"));
-}
-
-TEST(DemangleTest, r_value_reference) {
-  Demangler demangler;
-  ASSERT_EQ(
-      "android::SurfaceComposerClient::Transaction::merge(android::SurfaceComposerClient::"
-      "Transaction&&)",
-      demangler.Parse("_ZN7android21SurfaceComposerClient11Transaction5mergeEOS1_"));
-}
-
-TEST(DemangleTest, initial_St) {
-  Demangler demangler;
-  EXPECT_EQ("std::state", demangler.Parse("_ZSt5state"));
-  EXPECT_EQ("std::_In::ward", demangler.Parse("_ZNSt3_In4wardE"));
-  EXPECT_EQ("std::__terminate(void (*)())", demangler.Parse("_ZSt11__terminatePFvvE"));
-}
-
-TEST(DemangleTest, cfi) {
-  Demangler demangler;
-  EXPECT_EQ("nfa_sys_ptim_timer_update(tPTIM_CB*)",
-            demangler.Parse("_Z25nfa_sys_ptim_timer_updateP8tPTIM_CB"));
-  EXPECT_EQ("nfa_sys_ptim_timer_update(tPTIM_CB*) [clone .cfi]",
-            demangler.Parse("_Z25nfa_sys_ptim_timer_updateP8tPTIM_CB.cfi"));
-}
-
-TEST(DemangleTest, demangle) {
-  std::string str;
-
-  str = demangle("_ZN1a1b1cES0_");
-  ASSERT_EQ("a::b::c(a::b)", str);
-
-  str = demangle("_");
-  ASSERT_EQ("_", str);
-
-  str = demangle("_Z");
-  ASSERT_EQ("_Z", str);
-
-  str = demangle("_Za");
-  ASSERT_EQ("_Za", str);
-
-  str = demangle("_Zaa");
-  ASSERT_EQ("operator&&", str);
-
-  str = demangle("Xa");
-  ASSERT_EQ("Xa", str);
-}
diff --git a/demangle/Demangler.cpp b/demangle/Demangler.cpp
deleted file mode 100644
index 7a3aa81..0000000
--- a/demangle/Demangler.cpp
+++ /dev/null
@@ -1,924 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <assert.h>
-
-#include <cctype>
-#include <stack>
-#include <string>
-#include <vector>
-
-#include "Demangler.h"
-
-constexpr const char* Demangler::kTypes[];
-constexpr const char* Demangler::kDTypes[];
-constexpr const char* Demangler::kSTypes[];
-
-void Demangler::Save(const std::string& str, bool is_name) {
-  saves_.push_back(str);
-  last_save_name_ = is_name;
-}
-
-std::string Demangler::GetArgumentsString() {
-  size_t num_args = cur_state_.args.size();
-  std::string arg_str;
-  if (num_args > 0) {
-    arg_str = cur_state_.args[0];
-    for (size_t i = 1; i < num_args; i++) {
-      arg_str += ", " + cur_state_.args[i];
-    }
-  }
-  return arg_str;
-}
-
-const char* Demangler::AppendOperatorString(const char* name) {
-  const char* oper = nullptr;
-  switch (*name) {
-  case 'a':
-    name++;
-    switch (*name) {
-    case 'a':
-      oper = "operator&&";
-      break;
-    case 'd':
-    case 'n':
-      oper = "operator&";
-      break;
-    case 'N':
-      oper = "operator&=";
-      break;
-    case 'S':
-      oper = "operator=";
-      break;
-    }
-    break;
-  case 'c':
-    name++;
-    switch (*name) {
-    case 'l':
-      oper = "operator()";
-      break;
-    case 'm':
-      oper = "operator,";
-      break;
-    case 'o':
-      oper = "operator~";
-      break;
-    }
-    break;
-  case 'd':
-    name++;
-    switch (*name) {
-    case 'a':
-      oper = "operator delete[]";
-      break;
-    case 'e':
-      oper = "operator*";
-      break;
-    case 'l':
-      oper = "operator delete";
-      break;
-    case 'v':
-      oper = "operator/";
-      break;
-    case 'V':
-      oper = "operator/=";
-      break;
-    }
-    break;
-  case 'e':
-    name++;
-    switch (*name) {
-    case 'o':
-      oper = "operator^";
-      break;
-    case 'O':
-      oper = "operator^=";
-      break;
-    case 'q':
-      oper = "operator==";
-      break;
-    }
-    break;
-  case 'g':
-    name++;
-    switch (*name) {
-    case 'e':
-      oper = "operator>=";
-      break;
-    case 't':
-      oper = "operator>";
-      break;
-    }
-    break;
-  case 'i':
-    name++;
-    switch (*name) {
-    case 'x':
-      oper = "operator[]";
-      break;
-    }
-    break;
-  case 'l':
-    name++;
-    switch (*name) {
-    case 'e':
-      oper = "operator<=";
-      break;
-    case 's':
-      oper = "operator<<";
-      break;
-    case 'S':
-      oper = "operator<<=";
-      break;
-    case 't':
-      oper = "operator<";
-      break;
-    }
-    break;
-  case 'm':
-    name++;
-    switch (*name) {
-    case 'i':
-      oper = "operator-";
-      break;
-    case 'I':
-      oper = "operator-=";
-      break;
-    case 'l':
-      oper = "operator*";
-      break;
-    case 'L':
-      oper = "operator*=";
-      break;
-    case 'm':
-      oper = "operator--";
-      break;
-    }
-    break;
-  case 'n':
-    name++;
-    switch (*name) {
-    case 'a':
-      oper = "operator new[]";
-      break;
-    case 'e':
-      oper = "operator!=";
-      break;
-    case 'g':
-      oper = "operator-";
-      break;
-    case 't':
-      oper = "operator!";
-      break;
-    case 'w':
-      oper = "operator new";
-      break;
-    }
-    break;
-  case 'o':
-    name++;
-    switch (*name) {
-    case 'o':
-      oper = "operator||";
-      break;
-    case 'r':
-      oper = "operator|";
-      break;
-    case 'R':
-      oper = "operator|=";
-      break;
-    }
-    break;
-  case 'p':
-    name++;
-    switch (*name) {
-    case 'm':
-      oper = "operator->*";
-      break;
-    case 'l':
-      oper = "operator+";
-      break;
-    case 'L':
-      oper = "operator+=";
-      break;
-    case 'p':
-      oper = "operator++";
-      break;
-    case 's':
-      oper = "operator+";
-      break;
-    case 't':
-      oper = "operator->";
-      break;
-    }
-    break;
-  case 'q':
-    name++;
-    switch (*name) {
-    case 'u':
-      oper = "operator?";
-      break;
-    }
-    break;
-  case 'r':
-    name++;
-    switch (*name) {
-    case 'm':
-      oper = "operator%";
-      break;
-    case 'M':
-      oper = "operator%=";
-      break;
-    case 's':
-      oper = "operator>>";
-      break;
-    case 'S':
-      oper = "operator>>=";
-      break;
-    }
-    break;
-  }
-  if (oper == nullptr) {
-    return nullptr;
-  }
-  AppendCurrent(oper);
-  cur_state_.last_save = oper;
-  return name + 1;
-}
-
-const char* Demangler::GetStringFromLength(const char* name, std::string* str) {
-  assert(std::isdigit(*name));
-
-  size_t length = *name - '0';
-  name++;
-  while (*name != '\0' && std::isdigit(*name)) {
-    length = length * 10 + *name - '0';
-    name++;
-  }
-
-  std::string read_str;
-  while (*name != '\0' && length != 0) {
-    read_str += *name;
-    name++;
-    length--;
-  }
-  if (length != 0) {
-    return nullptr;
-  }
-  // Special replacement of _GLOBAL__N_1 to (anonymous namespace).
-  if (read_str == "_GLOBAL__N_1") {
-    *str += "(anonymous namespace)";
-  } else {
-    *str += read_str;
-  }
-  return name;
-}
-
-void Demangler::AppendCurrent(const std::string& str) {
-  if (!cur_state_.str.empty()) {
-    cur_state_.str += "::";
-  }
-  cur_state_.str += str;
-}
-
-void Demangler::AppendCurrent(const char* str) {
-  if (!cur_state_.str.empty()) {
-    cur_state_.str += "::";
-  }
-  cur_state_.str += str;
-}
-
-const char* Demangler::ParseS(const char* name) {
-  if (std::islower(*name)) {
-    const char* type = kSTypes[*name - 'a'];
-    if (type == nullptr) {
-      return nullptr;
-    }
-    AppendCurrent(type);
-    return name + 1;
-  }
-
-  if (saves_.empty()) {
-    return nullptr;
-  }
-
-  if (*name == '_') {
-    last_save_name_ = false;
-    AppendCurrent(saves_[0]);
-    return name + 1;
-  }
-
-  bool isdigit = std::isdigit(*name);
-  if (!isdigit && !std::isupper(*name)) {
-    return nullptr;
-  }
-
-  size_t index;
-  if (isdigit) {
-    index = *name - '0' + 1;
-  } else {
-    index = *name - 'A' + 11;
-  }
-  name++;
-  if (*name != '_') {
-    return nullptr;
-  }
-
-  if (index >= saves_.size()) {
-    return nullptr;
-  }
-
-  last_save_name_ = false;
-  AppendCurrent(saves_[index]);
-  return name + 1;
-}
-
-const char* Demangler::ParseT(const char* name) {
-  if (template_saves_.empty()) {
-    return nullptr;
-  }
-
-  if (*name == '_') {
-    last_save_name_ = false;
-    AppendCurrent(template_saves_[0]);
-    return name + 1;
-  }
-
-  // Need to get the total number.
-  char* end;
-  unsigned long int index = strtoul(name, &end, 10) + 1;
-  if (name == end || *end != '_') {
-    return nullptr;
-  }
-
-  if (index >= template_saves_.size()) {
-    return nullptr;
-  }
-
-  last_save_name_ = false;
-  AppendCurrent(template_saves_[index]);
-  return end + 1;
-}
-
-const char* Demangler::ParseFunctionName(const char* name) {
-  if (*name == 'E') {
-    if (parse_funcs_.empty()) {
-      return nullptr;
-    }
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-
-    // Remove the last saved part so that the full function name is not saved.
-    // But only if the last save was not something like a substitution.
-    if (!saves_.empty() && last_save_name_) {
-      saves_.pop_back();
-    }
-
-    function_name_ += cur_state_.str;
-    while (!cur_state_.suffixes.empty()) {
-      function_suffix_ += cur_state_.suffixes.back();
-      cur_state_.suffixes.pop_back();
-    }
-    cur_state_.Clear();
-
-    return name + 1;
-  }
-
-  if (*name == 'I') {
-    state_stack_.push(cur_state_);
-    cur_state_.Clear();
-
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseFunctionNameTemplate;
-    return name + 1;
-  }
-
-  return ParseComplexString(name);
-}
-
-const char* Demangler::ParseFunctionNameTemplate(const char* name) {
-  if (*name == 'E' && name[1] == 'E') {
-    // Only consider this a template with saves if it is right before
-    // the end of the name.
-    template_found_ = true;
-    template_saves_ = cur_state_.args;
-  }
-  return ParseTemplateArgumentsComplex(name);
-}
-
-const char* Demangler::ParseComplexArgument(const char* name) {
-  if (*name == 'E') {
-    if (parse_funcs_.empty()) {
-      return nullptr;
-    }
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-
-    AppendArgument(cur_state_.str);
-    cur_state_.str.clear();
-
-    return name + 1;
-  }
-
-  return ParseComplexString(name);
-}
-
-void Demangler::FinalizeTemplate() {
-  std::string arg_str(GetArgumentsString());
-  cur_state_ = state_stack_.top();
-  state_stack_.pop();
-  cur_state_.str += '<' + arg_str + '>';
-}
-
-const char* Demangler::ParseComplexString(const char* name) {
-  if (*name == 'S') {
-    name++;
-    if (*name == 't') {
-      AppendCurrent("std");
-      return name + 1;
-    }
-    return ParseS(name);
-  }
-  if (*name == 'L') {
-    name++;
-    if (!std::isdigit(*name)) {
-      return nullptr;
-    }
-  }
-  if (std::isdigit(*name)) {
-    std::string str;
-    name = GetStringFromLength(name, &str);
-    if (name == nullptr) {
-      return name;
-    }
-    AppendCurrent(str);
-    Save(cur_state_.str, true);
-    cur_state_.last_save = std::move(str);
-    return name;
-  }
-  if (*name == 'D') {
-    name++;
-    if (saves_.empty() || (*name != '0' && *name != '1' && *name != '2'
-        && *name != '5')) {
-      return nullptr;
-    }
-    last_save_name_ = false;
-    AppendCurrent("~" + cur_state_.last_save);
-    return name + 1;
-  }
-  if (*name == 'C') {
-    name++;
-    if (saves_.empty() || (*name != '1' && *name != '2' && *name != '3'
-        && *name != '5')) {
-      return nullptr;
-    }
-    last_save_name_ = false;
-    AppendCurrent(cur_state_.last_save);
-    return name + 1;
-  }
-  if (*name == 'K') {
-    cur_state_.suffixes.push_back(" const");
-    return name + 1;
-  }
-  if (*name == 'V') {
-    cur_state_.suffixes.push_back(" volatile");
-    return name + 1;
-  }
-  if (*name == 'I') {
-    // Save the current argument state.
-    state_stack_.push(cur_state_);
-    cur_state_.Clear();
-
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseTemplateArgumentsComplex;
-    return name + 1;
-  }
-  name = AppendOperatorString(name);
-  if (name != nullptr) {
-    Save(cur_state_.str, true);
-  }
-  return name;
-}
-
-void Demangler::AppendArgument(const std::string& str) {
-  std::string arg(str);
-  while (!cur_state_.suffixes.empty()) {
-    arg += cur_state_.suffixes.back();
-    cur_state_.suffixes.pop_back();
-    Save(arg, false);
-  }
-  cur_state_.args.push_back(arg);
-}
-
-const char* Demangler::ParseFunctionArgument(const char* name) {
-  if (*name == 'E') {
-    // The first argument is the function modifier.
-    // The second argument is the function type.
-    // The third argument is the return type of the function.
-    // The rest of the arguments are the function arguments.
-    size_t num_args = cur_state_.args.size();
-    if (num_args < 4) {
-      return nullptr;
-    }
-    std::string function_modifier = cur_state_.args[0];
-    std::string function_type = cur_state_.args[1];
-
-    std::string str = cur_state_.args[2] + ' ';
-    if (!cur_state_.args[1].empty()) {
-      str += '(' + cur_state_.args[1] + ')';
-    }
-
-    if (num_args == 4 && cur_state_.args[3] == "void") {
-      str += "()";
-    } else {
-      str += '(' + cur_state_.args[3];
-      for (size_t i = 4; i < num_args; i++) {
-        str += ", " + cur_state_.args[i];
-      }
-      str += ')';
-    }
-    str += cur_state_.args[0];
-
-    cur_state_ = state_stack_.top();
-    state_stack_.pop();
-    cur_state_.args.emplace_back(std::move(str));
-
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-    return name + 1;
-  }
-  return ParseArguments(name);
-}
-
-const char* Demangler::ParseArguments(const char* name) {
-  switch (*name) {
-  case 'P':
-    cur_state_.suffixes.push_back("*");
-    return name + 1;
-
-  case 'R':
-    // This should always be okay because the string is guaranteed to have
-    // at least two characters before this. A mangled string always starts
-    // with _Z.
-    if (name[-1] != 'R') {
-      // Multiple 'R's in a row only add a single &.
-      cur_state_.suffixes.push_back("&");
-    }
-    return name + 1;
-
-  case 'O':
-    cur_state_.suffixes.push_back("&&");
-    return name + 1;
-
-  case 'K':
-  case 'V': {
-    const char* suffix;
-    if (*name == 'K') {
-      suffix = " const";
-    } else {
-      suffix = " volatile";
-    }
-    if (!cur_state_.suffixes.empty() && (name[-1] == 'K' || name[-1] == 'V')) {
-      // Special case, const/volatile apply as a single entity.
-      size_t index = cur_state_.suffixes.size();
-      cur_state_.suffixes[index-1].insert(0, suffix);
-    } else {
-      cur_state_.suffixes.push_back(suffix);
-    }
-    return name + 1;
-  }
-
-  case 'F': {
-    std::string function_modifier;
-    std::string function_type;
-    if (!cur_state_.suffixes.empty()) {
-      // If the first element starts with a ' ', then this modifies the
-      // function itself.
-      if (cur_state_.suffixes.back()[0] == ' ') {
-        function_modifier = cur_state_.suffixes.back();
-        cur_state_.suffixes.pop_back();
-      }
-      while (!cur_state_.suffixes.empty()) {
-        function_type += cur_state_.suffixes.back();
-        cur_state_.suffixes.pop_back();
-      }
-    }
-
-    state_stack_.push(cur_state_);
-
-    cur_state_.Clear();
-
-    // The function parameter has this format:
-    //   First argument is the function modifier.
-    //   Second argument is the function type.
-    //   Third argument will be the return function type but has not
-    //     been parsed yet.
-    //   Any other parameters are the arguments to the function. There
-    //     must be at least one or this isn't valid.
-    cur_state_.args.push_back(function_modifier);
-    cur_state_.args.push_back(function_type);
-
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseFunctionArgument;
-    return name + 1;
-  }
-
-  case 'N':
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseComplexArgument;
-    return name + 1;
-
-  case 'S':
-    name++;
-    if (*name == 't') {
-      cur_state_.str = "std::";
-      return name + 1;
-    }
-    name = ParseS(name);
-    if (name == nullptr) {
-      return nullptr;
-    }
-    AppendArgument(cur_state_.str);
-    cur_state_.str.clear();
-    return name;
-
-  case 'D':
-    name++;
-    if (*name >= 'a' && *name <= 'z') {
-      const char* arg = Demangler::kDTypes[*name - 'a'];
-      if (arg == nullptr) {
-        return nullptr;
-      }
-      AppendArgument(arg);
-      return name + 1;
-    }
-    return nullptr;
-
-  case 'I':
-    // Save the current argument state.
-    state_stack_.push(cur_state_);
-    cur_state_.Clear();
-
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseTemplateArguments;
-    return name + 1;
-
-  case 'v':
-    AppendArgument("void");
-    return name + 1;
-
-  default:
-    if (*name >= 'a' && *name <= 'z') {
-      const char* arg = Demangler::kTypes[*name - 'a'];
-      if (arg == nullptr) {
-        return nullptr;
-      }
-      AppendArgument(arg);
-      return name + 1;
-    } else if (std::isdigit(*name)) {
-      std::string arg = cur_state_.str;
-      name = GetStringFromLength(name, &arg);
-      if (name == nullptr) {
-        return nullptr;
-      }
-      Save(arg, true);
-      if (*name == 'I') {
-        // There is one case where this argument is not complete, and that's
-        // where this is a template argument.
-        cur_state_.str = arg;
-      } else {
-        AppendArgument(arg);
-        cur_state_.str.clear();
-      }
-      return name;
-    } else if (strcmp(name, ".cfi") == 0) {
-      function_suffix_ += " [clone .cfi]";
-      return name + 4;
-    }
-  }
-  return nullptr;
-}
-
-const char* Demangler::ParseTemplateLiteral(const char* name) {
-  if (*name == 'E') {
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-    return name + 1;
-  }
-  // Only understand boolean values with 0 or 1.
-  if (*name == 'b') {
-    name++;
-    if (*name == '0') {
-      AppendArgument("false");
-      cur_state_.str.clear();
-    } else if (*name == '1') {
-      AppendArgument("true");
-      cur_state_.str.clear();
-    } else {
-      return nullptr;
-    }
-    return name + 1;
-  }
-  return nullptr;
-}
-
-const char* Demangler::ParseTemplateArgumentsComplex(const char* name) {
-  if (*name == 'E') {
-    if (parse_funcs_.empty()) {
-      return nullptr;
-    }
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-
-    FinalizeTemplate();
-    Save(cur_state_.str, false);
-    return name + 1;
-  } else if (*name == 'L') {
-    // Literal value for a template.
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseTemplateLiteral;
-    return name + 1;
-  }
-
-  return ParseArguments(name);
-}
-
-const char* Demangler::ParseTemplateArguments(const char* name) {
-  if (*name == 'E') {
-    if (parse_funcs_.empty()) {
-      return nullptr;
-    }
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-    FinalizeTemplate();
-    AppendArgument(cur_state_.str);
-    cur_state_.str.clear();
-    return name + 1;
-  } else if (*name == 'L') {
-    // Literal value for a template.
-    parse_funcs_.push_back(parse_func_);
-    parse_func_ = &Demangler::ParseTemplateLiteral;
-    return name + 1;
-  }
-
-  return ParseArguments(name);
-}
-
-const char* Demangler::ParseFunctionTemplateArguments(const char* name) {
-  if (*name == 'E') {
-    parse_func_ = parse_funcs_.back();
-    parse_funcs_.pop_back();
-
-    function_name_ += '<' + GetArgumentsString() + '>';
-    template_found_ = true;
-    template_saves_ = cur_state_.args;
-    cur_state_.Clear();
-    return name + 1;
-  }
-  return ParseTemplateArgumentsComplex(name);
-}
-
-const char* Demangler::FindFunctionName(const char* name) {
-  if (*name == 'T') {
-    // non-virtual thunk, verify that it matches one of these patterns:
-    //   Thn[0-9]+_
-    //   Th[0-9]+_
-    //   Thn_
-    //   Th_
-    name++;
-    if (*name != 'h') {
-      return nullptr;
-    }
-    name++;
-    if (*name == 'n') {
-      name++;
-    }
-    while (std::isdigit(*name)) {
-      name++;
-    }
-    if (*name != '_') {
-      return nullptr;
-    }
-    function_name_ = "non-virtual thunk to ";
-    return name + 1;
-  }
-
-  if (*name == 'N') {
-    parse_funcs_.push_back(&Demangler::ParseArgumentsAtTopLevel);
-    parse_func_ = &Demangler::ParseFunctionName;
-    return name + 1;
-  }
-
-  if (*name == 'S') {
-    name++;
-    if (*name == 't') {
-      function_name_ = "std::";
-      name++;
-    } else {
-      return nullptr;
-    }
-  }
-
-  if (std::isdigit(*name)) {
-    name = GetStringFromLength(name, &function_name_);
-  } else if (*name == 'L' && std::isdigit(name[1])) {
-    name = GetStringFromLength(name + 1, &function_name_);
-  } else {
-    name = AppendOperatorString(name);
-    function_name_ = cur_state_.str;
-  }
-  cur_state_.Clear();
-
-  // Check for a template argument, which will still be part of the function
-  // name.
-  if (name != nullptr && *name == 'I') {
-    parse_funcs_.push_back(&Demangler::ParseArgumentsAtTopLevel);
-    parse_func_ = &Demangler::ParseFunctionTemplateArguments;
-    return name + 1;
-  }
-  parse_func_ = &Demangler::ParseArgumentsAtTopLevel;
-  return name;
-}
-
-const char* Demangler::ParseArgumentsAtTopLevel(const char* name) {
-  // At the top level is the only place where T is allowed.
-  if (*name == 'T') {
-    name++;
-    name = ParseT(name);
-    if (name == nullptr) {
-      return nullptr;
-    }
-    AppendArgument(cur_state_.str);
-    cur_state_.str.clear();
-    return name;
-  }
-
-  return Demangler::ParseArguments(name);
-}
-
-std::string Demangler::Parse(const char* name, size_t max_length) {
-  if (name[0] == '\0' || name[0] != '_' || name[1] == '\0' || name[1] != 'Z') {
-    // Name is not mangled.
-    return name;
-  }
-
-  Clear();
-
-  parse_func_ = &Demangler::FindFunctionName;
-  parse_funcs_.push_back(&Demangler::Fail);
-  const char* cur_name = name + 2;
-  while (cur_name != nullptr && *cur_name != '\0'
-      && static_cast<size_t>(cur_name - name) < max_length) {
-    cur_name = (this->*parse_func_)(cur_name);
-  }
-  if (cur_name == nullptr || *cur_name != '\0' || function_name_.empty() ||
-      !cur_state_.suffixes.empty()) {
-    return name;
-  }
-
-  std::string return_type;
-  if (template_found_) {
-    // Only a single argument with a template is not allowed.
-    if (cur_state_.args.size() == 1) {
-      return name;
-    }
-
-    // If there are at least two arguments, this template has a return type.
-    if (cur_state_.args.size() > 1) {
-      // The first argument will be the return value.
-      return_type = cur_state_.args[0] + ' ';
-      cur_state_.args.erase(cur_state_.args.begin());
-    }
-  }
-
-  std::string arg_str;
-  if (cur_state_.args.size() == 1 && cur_state_.args[0] == "void") {
-    // If the only argument is void, then don't print any args.
-    arg_str = "()";
-  } else {
-    arg_str = GetArgumentsString();
-    if (!arg_str.empty()) {
-      arg_str = '(' + arg_str + ')';
-    }
-  }
-  return return_type + function_name_ + arg_str + function_suffix_;
-}
-
-std::string demangle(const char* name) {
-  Demangler demangler;
-  return demangler.Parse(name);
-}
diff --git a/demangle/Demangler.h b/demangle/Demangler.h
deleted file mode 100644
index 3b7d44e..0000000
--- a/demangle/Demangler.h
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __LIB_DEMANGLE_DEMANGLER_H
-#define __LIB_DEMANGLE_DEMANGLER_H
-
-#include <assert.h>
-
-#include <stack>
-#include <string>
-#include <vector>
-
-class Demangler {
- public:
-  Demangler() = default;
-
-  // NOTE: The max_length is not guaranteed to be the absolute max length
-  // of a string that will be rejected. Under certain circumstances the
-  // length check will not occur until after the second letter of a pair
-  // is checked.
-  std::string Parse(const char* name, size_t max_length = kMaxDefaultLength);
-
-  void AppendCurrent(const std::string& str);
-  void AppendCurrent(const char* str);
-  void AppendArgument(const std::string& str);
-  std::string GetArgumentsString();
-  void FinalizeTemplate();
-  const char* ParseS(const char* name);
-  const char* ParseT(const char* name);
-  const char* AppendOperatorString(const char* name);
-  void Save(const std::string& str, bool is_name);
-
- private:
-  void Clear() {
-    parse_funcs_.clear();
-    function_name_.clear();
-    function_suffix_.clear();
-    first_save_.clear();
-    cur_state_.Clear();
-    saves_.clear();
-    template_saves_.clear();
-    while (!state_stack_.empty()) {
-      state_stack_.pop();
-    }
-    last_save_name_ = false;
-    template_found_ = false;
-  }
-
-  using parse_func_type = const char* (Demangler::*)(const char*);
-  parse_func_type parse_func_;
-  std::vector<parse_func_type> parse_funcs_;
-  std::vector<std::string> saves_;
-  std::vector<std::string> template_saves_;
-  bool last_save_name_;
-  bool template_found_;
-
-  std::string function_name_;
-  std::string function_suffix_;
-
-  struct StateData {
-    void Clear() {
-      str.clear();
-      args.clear();
-      prefix.clear();
-      suffixes.clear();
-      last_save.clear();
-    }
-
-    std::string str;
-    std::vector<std::string> args;
-    std::string prefix;
-    std::vector<std::string> suffixes;
-    std::string last_save;
-  };
-  std::stack<StateData> state_stack_;
-  std::string first_save_;
-  StateData cur_state_;
-
-  static const char* GetStringFromLength(const char* name, std::string* str);
-
-  // Parsing functions.
-  const char* ParseComplexString(const char* name);
-  const char* ParseComplexArgument(const char* name);
-  const char* ParseArgumentsAtTopLevel(const char* name);
-  const char* ParseArguments(const char* name);
-  const char* ParseTemplateArguments(const char* name);
-  const char* ParseTemplateArgumentsComplex(const char* name);
-  const char* ParseTemplateLiteral(const char* name);
-  const char* ParseFunctionArgument(const char* name);
-  const char* ParseFunctionName(const char* name);
-  const char* ParseFunctionNameTemplate(const char* name);
-  const char* ParseFunctionTemplateArguments(const char* name);
-  const char* FindFunctionName(const char* name);
-  const char* Fail(const char*) { return nullptr; }
-
-  // The default maximum string length string to process.
-  static constexpr size_t kMaxDefaultLength = 2048;
-
-  static constexpr const char* kTypes[] = {
-    "signed char",        // a
-    "bool",               // b
-    "char",               // c
-    "double",             // d
-    "long double",        // e
-    "float",              // f
-    "__float128",         // g
-    "unsigned char",      // h
-    "int",                // i
-    "unsigned int",       // j
-    nullptr,              // k
-    "long",               // l
-    "unsigned long",      // m
-    "__int128",           // n
-    "unsigned __int128",  // o
-    nullptr,              // p
-    nullptr,              // q
-    nullptr,              // r
-    "short",              // s
-    "unsigned short",     // t
-    nullptr,              // u
-    "void",               // v
-    "wchar_t",            // w
-    "long long",          // x
-    "unsigned long long", // y
-    "...",                // z
-  };
-
-  static constexpr const char* kDTypes[] = {
-    "auto",               // a
-    nullptr,              // b
-    nullptr,              // c
-    "decimal64",          // d
-    "decimal128",         // e
-    "decimal32",          // f
-    nullptr,              // g
-    "half",               // h
-    "char32_t",           // i
-    nullptr,              // j
-    nullptr,              // k
-    nullptr,              // l
-    nullptr,              // m
-    "decltype(nullptr)",  // n
-    nullptr,              // o
-    nullptr,              // p
-    nullptr,              // q
-    nullptr,              // r
-    "char16_t",           // s
-    nullptr,              // t
-    nullptr,              // u
-    nullptr,              // v
-    nullptr,              // w
-    nullptr,              // x
-    nullptr,              // y
-    nullptr,              // z
-  };
-
-  static constexpr const char* kSTypes[] = {
-    "std::allocator",     // a
-    "std::basic_string",  // b
-    nullptr,              // c
-    "std::iostream",      // d
-    nullptr,              // e
-    nullptr,              // f
-    nullptr,              // g
-    nullptr,              // h
-    "std::istream",       // i
-    nullptr,              // j
-    nullptr,              // k
-    nullptr,              // l
-    nullptr,              // m
-    nullptr,              // n
-    "std::ostream",       // o
-    nullptr,              // p
-    nullptr,              // q
-    nullptr,              // r
-    "std::string",        // s
-    nullptr,              // t
-    nullptr,              // u
-    nullptr,              // v
-    nullptr,              // w
-    nullptr,              // x
-    nullptr,              // y
-    nullptr,              // z
-  };
-};
-
-#endif  // __LIB_DEMANGLE_DEMANGLER_H
diff --git a/demangle/OWNERS b/demangle/OWNERS
deleted file mode 100644
index 6f7e4a3..0000000
--- a/demangle/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-cferris@google.com
diff --git a/demangle/demangle.cpp b/demangle/demangle.cpp
deleted file mode 100644
index 66e5e58..0000000
--- a/demangle/demangle.cpp
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <getopt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <cctype>
-#include <string>
-
-#include <demangle.h>
-
-extern "C" char* __cxa_demangle(const char*, char*, size_t*, int*);
-
-static void Usage(const char* prog_name) {
-  printf("usage: %s [-c] [NAME_TO_DEMANGLE...]\n", prog_name);
-  printf("\n");
-  printf("Demangles C++ mangled names if supplied on the command-line, or found\n");
-  printf("reading from stdin otherwise.\n");
-  printf("\n");
-  printf("-c\tCompare against __cxa_demangle\n");
-  printf("\n");
-}
-
-static std::string DemangleWithCxa(const char* name) {
-  const char* cxa_demangle = __cxa_demangle(name, nullptr, nullptr, nullptr);
-  if (cxa_demangle == nullptr) {
-    return name;
-  }
-
-  // The format of our demangler is slightly different from the cxa demangler
-  // so modify the cxa demangler output. Specifically, for templates, remove
-  // the spaces between '>' and '>'.
-  std::string demangled_str;
-  for (size_t i = 0; i < strlen(cxa_demangle); i++) {
-    if (i > 2 && cxa_demangle[i] == '>' && std::isspace(cxa_demangle[i - 1]) &&
-        cxa_demangle[i - 2] == '>') {
-      demangled_str.resize(demangled_str.size() - 1);
-    }
-    demangled_str += cxa_demangle[i];
-  }
-  return demangled_str;
-}
-
-static void Compare(const char* name, const std::string& demangled_name) {
-  std::string cxa_demangled_name(DemangleWithCxa(name));
-  if (cxa_demangled_name != demangled_name) {
-    printf("\nMismatch!\n");
-    printf("\tmangled name: %s\n", name);
-    printf("\tour demangle: %s\n", demangled_name.c_str());
-    printf("\tcxa demangle: %s\n", cxa_demangled_name.c_str());
-    exit(1);
-  }
-}
-
-static int Filter(bool compare) {
-  char* line = nullptr;
-  size_t line_length = 0;
-
-  while ((getline(&line, &line_length, stdin)) != -1) {
-    char* p = line;
-    char* name;
-    while ((name = strstr(p, "_Z")) != nullptr) {
-      // Output anything before the identifier.
-      *name = 0;
-      printf("%s", p);
-      *name = '_';
-
-      // Extract the identifier.
-      p = name;
-      while (*p && (std::isalnum(*p) || *p == '_' || *p == '.' || *p == '$')) ++p;
-
-      // Demangle and output.
-      std::string identifier(name, p);
-      std::string demangled_name = demangle(identifier.c_str());
-      printf("%s", demangled_name.c_str());
-
-      if (compare) Compare(identifier.c_str(), demangled_name);
-    }
-    // Output anything after the last identifier.
-    printf("%s", p);
-  }
-
-  free(line);
-  return 0;
-}
-
-int main(int argc, char** argv) {
-#ifdef __BIONIC__
-  const char* prog_name = getprogname();
-#else
-  const char* prog_name = argv[0];
-#endif
-
-  bool compare = false;
-  int opt_char;
-  while ((opt_char = getopt(argc, argv, "c")) != -1) {
-    if (opt_char == 'c') {
-      compare = true;
-    } else {
-      Usage(prog_name);
-      return 1;
-    }
-  }
-
-  // With no arguments, act as a filter.
-  if (optind == argc) return Filter(compare);
-
-  // Otherwise demangle each argument.
-  while (optind < argc) {
-    const char* name = argv[optind++];
-    std::string demangled_name = demangle(name);
-    printf("%s\n", demangled_name.c_str());
-
-    if (compare) Compare(name, demangled_name);
-  }
-  return 0;
-}
diff --git a/demangle/demangle_fuzzer.cpp b/demangle/demangle_fuzzer.cpp
deleted file mode 100644
index 83fafc2..0000000
--- a/demangle/demangle_fuzzer.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <string>
-
-#include "Demangler.h"
-
-extern "C" void LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
-  std::vector<char> data_str(size + 1);
-  memcpy(data_str.data(), data, size);
-  data_str[size] = '\0';
-
-  Demangler demangler;
-  std::string demangled_name = demangler.Parse(data_str.data());
-  if (size != 0 && data_str[0] != '\0' && demangled_name.empty()) {
-    abort();
-  }
-}
diff --git a/demangle/include/demangle.h b/demangle/include/demangle.h
deleted file mode 100644
index 01f1b80..0000000
--- a/demangle/include/demangle.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __LIB_DEMANGLE_H_
-#define __LIB_DEMANGLE_H_
-
-#include <string>
-
-// If the name cannot be demangled, the original name will be returned as
-// a std::string. If the name can be demangled, then the demangled name
-// will be returned as a std::string.
-std::string demangle(const char* name);
-
-#endif  // __LIB_DEMANGLE_H_
diff --git a/deprecated-adf/Android.bp b/deprecated-adf/Android.bp
deleted file mode 100644
index b44c296..0000000
--- a/deprecated-adf/Android.bp
+++ /dev/null
@@ -1 +0,0 @@
-subdirs = ["*"]
diff --git a/deprecated-adf/libadf/Android.bp b/deprecated-adf/libadf/Android.bp
index 49e3721..70f0a3b 100644
--- a/deprecated-adf/libadf/Android.bp
+++ b/deprecated-adf/libadf/Android.bp
@@ -24,5 +24,3 @@
     local_include_dirs: ["include"],
     export_include_dirs: ["include"],
 }
-
-subdirs = ["tests"]
diff --git a/diagnose_usb/Android.bp b/diagnose_usb/Android.bp
index 6bee28c..93d13bd 100644
--- a/diagnose_usb/Android.bp
+++ b/diagnose_usb/Android.bp
@@ -3,6 +3,11 @@
     cflags: ["-Wall", "-Wextra", "-Werror"],
     host_supported: true,
     recovery_available: true,
+    apex_available: [
+        "com.android.adbd",
+        // TODO(b/151398197) remove the below
+        "//apex_available:platform",
+    ],
     target: {
         windows: {
             enabled: true,
diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index 716fe95..cf0f1ac 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -115,16 +115,19 @@
         "device/fastboot_device.cpp",
         "device/flashing.cpp",
         "device/main.cpp",
+        "device/usb.cpp",
         "device/usb_client.cpp",
+        "device/tcp_client.cpp",
         "device/utility.cpp",
         "device/variables.cpp",
+        "socket.cpp",
     ],
 
     shared_libs: [
         "android.hardware.boot@1.0",
+        "android.hardware.boot@1.1",
         "android.hardware.fastboot@1.0",
         "android.hardware.health@2.0",
-        "libadbd",
         "libasyncio",
         "libbase",
         "libbootloader_message",
@@ -134,17 +137,23 @@
         "libfs_mgr",
         "libgsi",
         "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
         "liblog",
         "liblp",
+        "libprotobuf-cpp-lite",
         "libsparse",
         "libutils",
     ],
 
     static_libs: [
+        "libgtest_prod",
         "libhealthhalutils",
+        "libsnapshot_nobinder",
     ],
+
+    header_libs: [
+        "avb_headers",
+        "libsnapshot_headers",
+    ]
 }
 
 cc_defaults {
@@ -187,7 +196,11 @@
     // will violate ODR.
     shared_libs: [],
 
-    header_libs: ["bootimg_headers"],
+    header_libs: [
+        "avb_headers",
+        "bootimg_headers",
+    ],
+
     static_libs: [
         "libziparchive",
         "libsparse",
diff --git a/fastboot/Android.mk b/fastboot/Android.mk
index 17ec392..fd009e7 100644
--- a/fastboot/Android.mk
+++ b/fastboot/Android.mk
@@ -18,9 +18,9 @@
 # Package fastboot-related executables.
 #
 
-my_dist_files := $(HOST_OUT_EXECUTABLES)/mke2fs
-my_dist_files += $(HOST_OUT_EXECUTABLES)/e2fsdroid
-my_dist_files += $(HOST_OUT_EXECUTABLES)/make_f2fs
-my_dist_files += $(HOST_OUT_EXECUTABLES)/sload_f2fs
+my_dist_files := $(SOONG_HOST_OUT_EXECUTABLES)/mke2fs
+my_dist_files += $(SOONG_HOST_OUT_EXECUTABLES)/e2fsdroid
+my_dist_files += $(SOONG_HOST_OUT_EXECUTABLES)/make_f2fs
+my_dist_files += $(SOONG_HOST_OUT_EXECUTABLES)/sload_f2fs
 $(call dist-for-goals,dist_files sdk win_sdk,$(my_dist_files))
 my_dist_files :=
diff --git a/fastboot/bootimg_utils.cpp b/fastboot/bootimg_utils.cpp
index 46d4bd3..2c0989e 100644
--- a/fastboot/bootimg_utils.cpp
+++ b/fastboot/bootimg_utils.cpp
@@ -34,14 +34,54 @@
 #include <stdlib.h>
 #include <string.h>
 
-void bootimg_set_cmdline(boot_img_hdr_v2* h, const std::string& cmdline) {
+static void bootimg_set_cmdline_v3(boot_img_hdr_v3* h, const std::string& cmdline) {
     if (cmdline.size() >= sizeof(h->cmdline)) die("command line too large: %zu", cmdline.size());
     strcpy(reinterpret_cast<char*>(h->cmdline), cmdline.c_str());
 }
 
+void bootimg_set_cmdline(boot_img_hdr_v2* h, const std::string& cmdline) {
+    if (h->header_version == 3) {
+        return bootimg_set_cmdline_v3(reinterpret_cast<boot_img_hdr_v3*>(h), cmdline);
+    }
+    if (cmdline.size() >= sizeof(h->cmdline)) die("command line too large: %zu", cmdline.size());
+    strcpy(reinterpret_cast<char*>(h->cmdline), cmdline.c_str());
+}
+
+static boot_img_hdr_v3* mkbootimg_v3(const std::vector<char>& kernel,
+                                     const std::vector<char>& ramdisk, const boot_img_hdr_v2& src,
+                                     std::vector<char>* out) {
+#define V3_PAGE_SIZE 4096
+    const size_t page_mask = V3_PAGE_SIZE - 1;
+    int64_t kernel_actual = (kernel.size() + page_mask) & (~page_mask);
+    int64_t ramdisk_actual = (ramdisk.size() + page_mask) & (~page_mask);
+
+    int64_t bootimg_size = V3_PAGE_SIZE + kernel_actual + ramdisk_actual;
+    out->resize(bootimg_size);
+
+    boot_img_hdr_v3* hdr = reinterpret_cast<boot_img_hdr_v3*>(out->data());
+
+    memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
+    hdr->kernel_size = kernel.size();
+    hdr->ramdisk_size = ramdisk.size();
+    hdr->os_version = src.os_version;
+    hdr->header_size = sizeof(boot_img_hdr_v3);
+    hdr->header_version = 3;
+
+    memcpy(hdr->magic + V3_PAGE_SIZE, kernel.data(), kernel.size());
+    memcpy(hdr->magic + V3_PAGE_SIZE + kernel_actual, ramdisk.data(), ramdisk.size());
+
+    return hdr;
+}
+
 boot_img_hdr_v2* mkbootimg(const std::vector<char>& kernel, const std::vector<char>& ramdisk,
                            const std::vector<char>& second, const std::vector<char>& dtb,
                            size_t base, const boot_img_hdr_v2& src, std::vector<char>* out) {
+    if (src.header_version == 3) {
+        if (!second.empty() || !dtb.empty()) {
+            die("Second stage bootloader and dtb not supported in v3 boot image\n");
+        }
+        return reinterpret_cast<boot_img_hdr_v2*>(mkbootimg_v3(kernel, ramdisk, src, out));
+    }
     const size_t page_mask = src.page_size - 1;
 
     int64_t header_actual = (sizeof(boot_img_hdr_v1) + page_mask) & (~page_mask);
diff --git a/fastboot/constants.h b/fastboot/constants.h
index 8a72627..ba43ca5 100644
--- a/fastboot/constants.h
+++ b/fastboot/constants.h
@@ -34,6 +34,7 @@
 #define FB_CMD_UPDATE_SUPER "update-super"
 #define FB_CMD_OEM "oem"
 #define FB_CMD_GSI "gsi"
+#define FB_CMD_SNAPSHOT_UPDATE "snapshot-update"
 
 #define RESPONSE_OKAY "OKAY"
 #define RESPONSE_FAIL "FAIL"
@@ -41,11 +42,13 @@
 #define RESPONSE_INFO "INFO"
 
 #define FB_COMMAND_SZ 64
-#define FB_RESPONSE_SZ 64
+#define FB_RESPONSE_SZ 256
 
 #define FB_VAR_VERSION "version"
 #define FB_VAR_VERSION_BOOTLOADER "version-bootloader"
 #define FB_VAR_VERSION_BASEBAND "version-baseband"
+#define FB_VAR_VERSION_OS "version-os"
+#define FB_VAR_VERSION_VNDK "version-vndk"
 #define FB_VAR_PRODUCT "product"
 #define FB_VAR_SERIALNO "serialno"
 #define FB_VAR_SECURE "secure"
@@ -66,3 +69,11 @@
 #define FB_VAR_BATTERY_VOLTAGE "battery-voltage"
 #define FB_VAR_BATTERY_SOC_OK "battery-soc-ok"
 #define FB_VAR_SUPER_PARTITION_NAME "super-partition-name"
+#define FB_VAR_SNAPSHOT_UPDATE_STATUS "snapshot-update-status"
+#define FB_VAR_CPU_ABI "cpu-abi"
+#define FB_VAR_SYSTEM_FINGERPRINT "system-fingerprint"
+#define FB_VAR_VENDOR_FINGERPRINT "vendor-fingerprint"
+#define FB_VAR_DYNAMIC_PARTITION "dynamic-partition"
+#define FB_VAR_FIRST_API_LEVEL "first-api-level"
+#define FB_VAR_SECURITY_PATCH_LEVEL "security-patch-level"
+#define FB_VAR_TREBLE_ENABLED "treble-enabled"
diff --git a/fastboot/device/commands.cpp b/fastboot/device/commands.cpp
index 1b09f79..2553353 100644
--- a/fastboot/device/commands.cpp
+++ b/fastboot/device/commands.cpp
@@ -19,12 +19,15 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 
+#include <unordered_set>
+
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
+#include <android/hardware/boot/1.1/IBootControl.h>
 #include <cutils/android_reboot.h>
 #include <ext4_utils/wipe.h>
 #include <fs_mgr.h>
@@ -32,6 +35,7 @@
 #include <libgsi/libgsi.h>
 #include <liblp/builder.h>
 #include <liblp/liblp.h>
+#include <libsnapshot/snapshot.h>
 #include <uuid/uuid.h>
 
 #include "constants.h"
@@ -39,14 +43,16 @@
 #include "flashing.h"
 #include "utility.h"
 
+using android::fs_mgr::MetadataBuilder;
 using ::android::hardware::hidl_string;
 using ::android::hardware::boot::V1_0::BoolResult;
 using ::android::hardware::boot::V1_0::CommandResult;
 using ::android::hardware::boot::V1_0::Slot;
+using ::android::hardware::boot::V1_1::MergeStatus;
 using ::android::hardware::fastboot::V1_0::Result;
 using ::android::hardware::fastboot::V1_0::Status;
-
-using namespace android::fs_mgr;
+using android::snapshot::SnapshotManager;
+using IBootControl1_1 = ::android::hardware::boot::V1_1::IBootControl;
 
 struct VariableHandlers {
     // Callback to retrieve the value of a single variable.
@@ -55,6 +61,24 @@
     std::function<std::vector<std::vector<std::string>>(FastbootDevice*)> get_all_args;
 };
 
+static bool IsSnapshotUpdateInProgress(FastbootDevice* device) {
+    auto hal = device->boot1_1();
+    if (!hal) {
+        return false;
+    }
+    auto merge_status = hal->getSnapshotMergeStatus();
+    return merge_status == MergeStatus::SNAPSHOTTED || merge_status == MergeStatus::MERGING;
+}
+
+static bool IsProtectedPartitionDuringMerge(FastbootDevice* device, const std::string& name) {
+    static const std::unordered_set<std::string> ProtectedPartitionsDuringMerge = {
+            "userdata", "metadata", "misc"};
+    if (ProtectedPartitionsDuringMerge.count(name) == 0) {
+        return false;
+    }
+    return IsSnapshotUpdateInProgress(device);
+}
+
 static void GetAllVars(FastbootDevice* device, const std::string& name,
                        const VariableHandlers& handlers) {
     if (!handlers.get_all_args) {
@@ -83,6 +107,8 @@
             {FB_VAR_VERSION, {GetVersion, nullptr}},
             {FB_VAR_VERSION_BOOTLOADER, {GetBootloaderVersion, nullptr}},
             {FB_VAR_VERSION_BASEBAND, {GetBasebandVersion, nullptr}},
+            {FB_VAR_VERSION_OS, {GetOsVersion, nullptr}},
+            {FB_VAR_VERSION_VNDK, {GetVndkVersion, nullptr}},
             {FB_VAR_PRODUCT, {GetProduct, nullptr}},
             {FB_VAR_SERIALNO, {GetSerial, nullptr}},
             {FB_VAR_VARIANT, {GetVariant, nullptr}},
@@ -102,7 +128,15 @@
             {FB_VAR_BATTERY_VOLTAGE, {GetBatteryVoltage, nullptr}},
             {FB_VAR_BATTERY_SOC_OK, {GetBatterySoCOk, nullptr}},
             {FB_VAR_HW_REVISION, {GetHardwareRevision, nullptr}},
-            {FB_VAR_SUPER_PARTITION_NAME, {GetSuperPartitionName, nullptr}}};
+            {FB_VAR_SUPER_PARTITION_NAME, {GetSuperPartitionName, nullptr}},
+            {FB_VAR_SNAPSHOT_UPDATE_STATUS, {GetSnapshotUpdateStatus, nullptr}},
+            {FB_VAR_CPU_ABI, {GetCpuAbi, nullptr}},
+            {FB_VAR_SYSTEM_FINGERPRINT, {GetSystemFingerprint, nullptr}},
+            {FB_VAR_VENDOR_FINGERPRINT, {GetVendorFingerprint, nullptr}},
+            {FB_VAR_DYNAMIC_PARTITION, {GetDynamicPartition, nullptr}},
+            {FB_VAR_FIRST_API_LEVEL, {GetFirstApiLevel, nullptr}},
+            {FB_VAR_SECURITY_PATCH_LEVEL, {GetSecurityPatchLevel, nullptr}},
+            {FB_VAR_TREBLE_ENABLED, {GetTrebleEnabled, nullptr}}};
 
     if (args.size() < 2) {
         return device->WriteFail("Missing argument");
@@ -139,8 +173,14 @@
         return device->WriteStatus(FastbootResult::FAIL, "Erase is not allowed on locked devices");
     }
 
+    const auto& partition_name = args[1];
+    if (IsProtectedPartitionDuringMerge(device, partition_name)) {
+        auto message = "Cannot erase " + partition_name + " while a snapshot update is in progress";
+        return device->WriteFail(message);
+    }
+
     PartitionHandle handle;
-    if (!OpenPartition(device, args[1], &handle)) {
+    if (!OpenPartition(device, partition_name, &handle)) {
         return device->WriteStatus(FastbootResult::FAIL, "Partition doesn't exist");
     }
     if (wipe_block_device(handle.fd(), get_block_device_size(handle.fd())) == 0) {
@@ -195,23 +235,6 @@
     return device->WriteStatus(FastbootResult::FAIL, "Couldn't download data");
 }
 
-bool FlashHandler(FastbootDevice* device, const std::vector<std::string>& args) {
-    if (args.size() < 2) {
-        return device->WriteStatus(FastbootResult::FAIL, "Invalid arguments");
-    }
-
-    if (GetDeviceLockStatus()) {
-        return device->WriteStatus(FastbootResult::FAIL,
-                                   "Flashing is not allowed on locked devices");
-    }
-
-    int ret = Flash(device, args[1]);
-    if (ret < 0) {
-        return device->WriteStatus(FastbootResult::FAIL, strerror(-ret));
-    }
-    return device->WriteStatus(FastbootResult::OKAY, "Flashing succeeded");
-}
-
 bool SetActiveHandler(FastbootDevice* device, const std::vector<std::string>& args) {
     if (args.size() < 2) {
         return device->WriteStatus(FastbootResult::FAIL, "Missing slot argument");
@@ -222,9 +245,9 @@
                                    "set_active command is not allowed on locked devices");
     }
 
-    // Slot suffix needs to be between 'a' and 'z'.
     Slot slot;
     if (!GetSlotNumber(args[1], &slot)) {
+        // Slot suffix needs to be between 'a' and 'z'.
         return device->WriteStatus(FastbootResult::FAIL, "Bad slot suffix");
     }
 
@@ -237,6 +260,32 @@
     if (slot >= boot_control_hal->getNumberSlots()) {
         return device->WriteStatus(FastbootResult::FAIL, "Slot out of range");
     }
+
+    // If the slot is not changing, do nothing.
+    if (args[1] == device->GetCurrentSlot()) {
+        return device->WriteOkay("");
+    }
+
+    // Check how to handle the current snapshot state.
+    if (auto hal11 = device->boot1_1()) {
+        auto merge_status = hal11->getSnapshotMergeStatus();
+        if (merge_status == MergeStatus::MERGING) {
+            return device->WriteFail("Cannot change slots while a snapshot update is in progress");
+        }
+        // Note: we allow the slot change if the state is SNAPSHOTTED. First-
+        // stage init does not have access to the HAL, and uses the slot number
+        // and /metadata OTA state to determine whether a slot change occurred.
+        // Booting into the old slot would erase the OTA, and switching A->B->A
+        // would simply resume it if no boots occur in between. Re-flashing
+        // partitions implicitly cancels the OTA, so leaving the state as-is is
+        // safe.
+        if (merge_status == MergeStatus::SNAPSHOTTED) {
+            device->WriteInfo(
+                    "Changing the active slot with a snapshot applied may cancel the"
+                    " update.");
+        }
+    }
+
     CommandResult ret;
     auto cb = [&ret](CommandResult result) { ret = result; };
     auto result = boot_control_hal->setActiveBootSlot(slot, cb);
@@ -340,7 +389,7 @@
 PartitionBuilder::PartitionBuilder(FastbootDevice* device, const std::string& partition_name)
     : device_(device) {
     std::string slot_suffix = GetSuperSlotSuffix(device, partition_name);
-    slot_number_ = SlotNumberForSlotSuffix(slot_suffix);
+    slot_number_ = android::fs_mgr::SlotNumberForSlotSuffix(slot_suffix);
     auto super_device = FindPhysicalPartition(fs_mgr_get_super_partition_name(slot_number_));
     if (!super_device) {
         return;
@@ -350,7 +399,7 @@
 }
 
 bool PartitionBuilder::Write() {
-    std::unique_ptr<LpMetadata> metadata = builder_->Export();
+    auto metadata = builder_->Export();
     if (!metadata) {
         return false;
     }
@@ -381,7 +430,7 @@
         return device->WriteFail("Partition already exists");
     }
 
-    Partition* partition = builder->AddPartition(partition_name, 0);
+    auto partition = builder->AddPartition(partition_name, 0);
     if (!partition) {
         return device->WriteFail("Failed to add partition");
     }
@@ -437,10 +486,15 @@
         return device->WriteFail("Could not open super partition");
     }
 
-    Partition* partition = builder->FindPartition(partition_name);
+    auto partition = builder->FindPartition(partition_name);
     if (!partition) {
         return device->WriteFail("Partition does not exist");
     }
+
+    // Remove the updated flag to cancel any snapshots.
+    uint32_t attrs = partition->attributes();
+    partition->set_attributes(attrs & ~LP_PARTITION_ATTR_UPDATED);
+
     if (!builder->ResizePartition(partition, partition_size)) {
         return device->WriteFail("Not enough space to resize partition");
     }
@@ -450,6 +504,47 @@
     return device->WriteOkay("Partition resized");
 }
 
+void CancelPartitionSnapshot(FastbootDevice* device, const std::string& partition_name) {
+    PartitionBuilder builder(device, partition_name);
+    if (!builder.Valid()) return;
+
+    auto partition = builder->FindPartition(partition_name);
+    if (!partition) return;
+
+    // Remove the updated flag to cancel any snapshots.
+    uint32_t attrs = partition->attributes();
+    partition->set_attributes(attrs & ~LP_PARTITION_ATTR_UPDATED);
+
+    builder.Write();
+}
+
+bool FlashHandler(FastbootDevice* device, const std::vector<std::string>& args) {
+    if (args.size() < 2) {
+        return device->WriteStatus(FastbootResult::FAIL, "Invalid arguments");
+    }
+
+    if (GetDeviceLockStatus()) {
+        return device->WriteStatus(FastbootResult::FAIL,
+                                   "Flashing is not allowed on locked devices");
+    }
+
+    const auto& partition_name = args[1];
+    if (IsProtectedPartitionDuringMerge(device, partition_name)) {
+        auto message = "Cannot flash " + partition_name + " while a snapshot update is in progress";
+        return device->WriteFail(message);
+    }
+
+    if (LogicalPartitionExists(device, partition_name)) {
+        CancelPartitionSnapshot(device, partition_name);
+    }
+
+    int ret = Flash(device, partition_name);
+    if (ret < 0) {
+        return device->WriteStatus(FastbootResult::FAIL, strerror(-ret));
+    }
+    return device->WriteStatus(FastbootResult::OKAY, "Flashing succeeded");
+}
+
 bool UpdateSuperHandler(FastbootDevice* device, const std::vector<std::string>& args) {
     if (args.size() < 2) {
         return device->WriteFail("Invalid arguments");
@@ -463,42 +558,6 @@
     return UpdateSuper(device, args[1], wipe);
 }
 
-class AutoMountMetadata {
-  public:
-    AutoMountMetadata() {
-        Fstab proc_mounts;
-        if (!ReadFstabFromFile("/proc/mounts", &proc_mounts)) {
-            LOG(ERROR) << "Could not read /proc/mounts";
-            return;
-        }
-
-        auto iter = std::find_if(proc_mounts.begin(), proc_mounts.end(),
-                [](const auto& entry) { return entry.mount_point == "/metadata"; });
-        if (iter != proc_mounts.end()) {
-            mounted_ = true;
-            return;
-        }
-
-        if (!ReadDefaultFstab(&fstab_)) {
-            LOG(ERROR) << "Could not read default fstab";
-            return;
-        }
-        mounted_ = EnsurePathMounted(&fstab_, "/metadata");
-        should_unmount_ = true;
-    }
-    ~AutoMountMetadata() {
-        if (mounted_ && should_unmount_) {
-            EnsurePathUnmounted(&fstab_, "/metadata");
-        }
-    }
-    explicit operator bool() const { return mounted_; }
-
-  private:
-    Fstab fstab_;
-    bool mounted_ = false;
-    bool should_unmount_ = false;
-};
-
 bool GsiHandler(FastbootDevice* device, const std::vector<std::string>& args) {
     if (args.size() != 2) {
         return device->WriteFail("Invalid arguments");
@@ -524,3 +583,53 @@
     }
     return device->WriteStatus(FastbootResult::OKAY, "Success");
 }
+
+bool SnapshotUpdateHandler(FastbootDevice* device, const std::vector<std::string>& args) {
+    // Note that we use the HAL rather than mounting /metadata, since we want
+    // our results to match the bootloader.
+    auto hal = device->boot1_1();
+    if (!hal) return device->WriteFail("Not supported");
+
+    // If no arguments, return the same thing as a getvar. Note that we get the
+    // HAL first so we can return "not supported" before we return the less
+    // specific error message below.
+    if (args.size() < 2 || args[1].empty()) {
+        std::string message;
+        if (!GetSnapshotUpdateStatus(device, {}, &message)) {
+            return device->WriteFail("Could not determine update status");
+        }
+        device->WriteInfo(message);
+        return device->WriteOkay("");
+    }
+
+    MergeStatus status = hal->getSnapshotMergeStatus();
+
+    if (args.size() != 2) {
+        return device->WriteFail("Invalid arguments");
+    }
+    if (args[1] == "cancel") {
+        switch (status) {
+            case MergeStatus::SNAPSHOTTED:
+            case MergeStatus::MERGING:
+                hal->setSnapshotMergeStatus(MergeStatus::CANCELLED);
+                break;
+            default:
+                break;
+        }
+    } else if (args[1] == "merge") {
+        if (status != MergeStatus::MERGING) {
+            return device->WriteFail("No snapshot merge is in progress");
+        }
+
+        auto sm = SnapshotManager::NewForFirstStageMount();
+        if (!sm) {
+            return device->WriteFail("Unable to create SnapshotManager");
+        }
+        if (!sm->FinishMergeInRecovery()) {
+            return device->WriteFail("Unable to finish snapshot merge");
+        }
+    } else {
+        return device->WriteFail("Invalid parameter to snapshot-update");
+    }
+    return device->WriteStatus(FastbootResult::OKAY, "Success");
+}
diff --git a/fastboot/device/commands.h b/fastboot/device/commands.h
index afd6d08..c1324bc 100644
--- a/fastboot/device/commands.h
+++ b/fastboot/device/commands.h
@@ -19,7 +19,7 @@
 #include <string>
 #include <vector>
 
-constexpr unsigned int kMaxDownloadSizeDefault = 0x20000000;
+constexpr unsigned int kMaxDownloadSizeDefault = 0x10000000;
 
 class FastbootDevice;
 
@@ -49,3 +49,4 @@
 bool UpdateSuperHandler(FastbootDevice* device, const std::vector<std::string>& args);
 bool OemCmdHandler(FastbootDevice* device, const std::vector<std::string>& args);
 bool GsiHandler(FastbootDevice* device, const std::vector<std::string>& args);
+bool SnapshotUpdateHandler(FastbootDevice* device, const std::vector<std::string>& args);
diff --git a/fastboot/device/fastboot_device.cpp b/fastboot/device/fastboot_device.cpp
index 56fafab..1b0859f 100644
--- a/fastboot/device/fastboot_device.cpp
+++ b/fastboot/device/fastboot_device.cpp
@@ -16,18 +16,24 @@
 
 #include "fastboot_device.h"
 
+#include <algorithm>
+
 #include <android-base/logging.h>
+#include <android-base/properties.h>
 #include <android-base/strings.h>
 #include <android/hardware/boot/1.0/IBootControl.h>
 #include <android/hardware/fastboot/1.0/IFastboot.h>
+#include <fs_mgr.h>
+#include <fs_mgr/roots.h>
 #include <healthhalutils/HealthHalUtils.h>
 
-#include <algorithm>
-
 #include "constants.h"
 #include "flashing.h"
+#include "tcp_client.h"
 #include "usb_client.h"
 
+using android::fs_mgr::EnsurePathUnmounted;
+using android::fs_mgr::Fstab;
 using ::android::hardware::hidl_string;
 using ::android::hardware::boot::V1_0::IBootControl;
 using ::android::hardware::boot::V1_0::Slot;
@@ -54,12 +60,29 @@
               {FB_CMD_UPDATE_SUPER, UpdateSuperHandler},
               {FB_CMD_OEM, OemCmdHandler},
               {FB_CMD_GSI, GsiHandler},
+              {FB_CMD_SNAPSHOT_UPDATE, SnapshotUpdateHandler},
       }),
-      transport_(std::make_unique<ClientUsbTransport>()),
       boot_control_hal_(IBootControl::getService()),
       health_hal_(get_health_service()),
       fastboot_hal_(IFastboot::getService()),
-      active_slot_("") {}
+      active_slot_("") {
+    if (android::base::GetProperty("fastbootd.protocol", "usb") == "tcp") {
+        transport_ = std::make_unique<ClientTcpTransport>();
+    } else {
+        transport_ = std::make_unique<ClientUsbTransport>();
+    }
+
+    if (boot_control_hal_) {
+        boot1_1_ = android::hardware::boot::V1_1::IBootControl::castFrom(boot_control_hal_);
+    }
+
+    // Make sure cache is unmounted, since recovery will have mounted it for
+    // logging.
+    Fstab fstab;
+    if (ReadDefaultFstab(&fstab)) {
+        EnsurePathUnmounted(&fstab, "/cache");
+    }
+}
 
 FastbootDevice::~FastbootDevice() {
     CloseDevice();
diff --git a/fastboot/device/fastboot_device.h b/fastboot/device/fastboot_device.h
index 091aadf..bbe8172 100644
--- a/fastboot/device/fastboot_device.h
+++ b/fastboot/device/fastboot_device.h
@@ -23,6 +23,7 @@
 #include <vector>
 
 #include <android/hardware/boot/1.0/IBootControl.h>
+#include <android/hardware/boot/1.1/IBootControl.h>
 #include <android/hardware/fastboot/1.0/IFastboot.h>
 #include <android/hardware/health/2.0/IHealth.h>
 
@@ -51,6 +52,7 @@
     android::sp<android::hardware::boot::V1_0::IBootControl> boot_control_hal() {
         return boot_control_hal_;
     }
+    android::sp<android::hardware::boot::V1_1::IBootControl> boot1_1() { return boot1_1_; }
     android::sp<android::hardware::fastboot::V1_0::IFastboot> fastboot_hal() {
         return fastboot_hal_;
     }
@@ -63,6 +65,7 @@
 
     std::unique_ptr<Transport> transport_;
     android::sp<android::hardware::boot::V1_0::IBootControl> boot_control_hal_;
+    android::sp<android::hardware::boot::V1_1::IBootControl> boot1_1_;
     android::sp<android::hardware::health::V2_0::IHealth> health_hal_;
     android::sp<android::hardware::fastboot::V1_0::IFastboot> fastboot_hal_;
     std::vector<char> download_data_;
diff --git a/fastboot/device/flashing.cpp b/fastboot/device/flashing.cpp
index 99854c9..a5f1223 100644
--- a/fastboot/device/flashing.cpp
+++ b/fastboot/device/flashing.cpp
@@ -21,6 +21,7 @@
 
 #include <algorithm>
 #include <memory>
+#include <optional>
 #include <set>
 #include <string>
 
@@ -30,8 +31,10 @@
 #include <ext4_utils/ext4_utils.h>
 #include <fs_mgr_overlayfs.h>
 #include <fstab/fstab.h>
+#include <libavb/libavb.h>
 #include <liblp/builder.h>
 #include <liblp/liblp.h>
+#include <libsnapshot/snapshot.h>
 #include <sparse/sparse.h>
 
 #include "fastboot_device.h"
@@ -55,6 +58,7 @@
     Fstab fstab;
     ReadDefaultFstab(&fstab);
 
+    std::optional<AutoMountMetadata> mount_metadata;
     for (const auto& entry : fstab) {
         auto partition = android::base::Basename(entry.mount_point);
         if ("/" == entry.mount_point) {
@@ -62,6 +66,7 @@
         }
 
         if ((partition + device->GetCurrentSlot()) == partition_name) {
+            mount_metadata.emplace();
             fs_mgr_overlayfs_teardown(entry.mount_point.c_str());
         }
     }
@@ -118,6 +123,27 @@
     }
 }
 
+static void CopyAVBFooter(std::vector<char>* data, const uint64_t block_device_size) {
+    if (data->size() < AVB_FOOTER_SIZE) {
+        return;
+    }
+    std::string footer;
+    uint64_t footer_offset = data->size() - AVB_FOOTER_SIZE;
+    for (int idx = 0; idx < AVB_FOOTER_MAGIC_LEN; idx++) {
+        footer.push_back(data->at(footer_offset + idx));
+    }
+    if (0 != footer.compare(AVB_FOOTER_MAGIC)) {
+        return;
+    }
+
+    // copy AVB footer from end of data to end of block device
+    uint64_t original_data_size = data->size();
+    data->resize(block_device_size, 0);
+    for (int idx = 0; idx < AVB_FOOTER_SIZE; idx++) {
+        data->at(block_device_size - 1 - idx) = data->at(original_data_size - 1 - idx);
+    }
+}
+
 int Flash(FastbootDevice* device, const std::string& partition_name) {
     PartitionHandle handle;
     if (!OpenPartition(device, partition_name, &handle)) {
@@ -127,8 +153,14 @@
     std::vector<char> data = std::move(device->download_data());
     if (data.size() == 0) {
         return -EINVAL;
-    } else if (data.size() > get_block_device_size(handle.fd())) {
+    }
+    uint64_t block_device_size = get_block_device_size(handle.fd());
+    if (data.size() > block_device_size) {
         return -EOVERFLOW;
+    } else if (data.size() < block_device_size &&
+               (partition_name == "boot" || partition_name == "boot_a" ||
+                partition_name == "boot_b")) {
+        CopyAVBFooter(&data, block_device_size);
     }
     WipeOverlayfsForPartition(device, partition_name);
     return FlashBlockDevice(handle.fd(), data);
@@ -171,6 +203,11 @@
         if (!slot_suffix.empty() && GetPartitionSlotSuffix(partition_name) == slot_suffix) {
             continue;
         }
+        std::string group_name = GetPartitionGroupName(old_metadata->groups[partition.group_index]);
+        // Skip partitions in the COW group
+        if (group_name == android::snapshot::kCowGroupName) {
+            continue;
+        }
         partitions_to_keep.emplace(partition_name);
     }
 
diff --git a/fastboot/device/tcp_client.cpp b/fastboot/device/tcp_client.cpp
new file mode 100644
index 0000000..ec5e1e3
--- /dev/null
+++ b/fastboot/device/tcp_client.cpp
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "tcp_client.h"
+#include "constants.h"
+
+#include <android-base/errors.h>
+#include <android-base/logging.h>
+#include <android-base/parseint.h>
+#include <android-base/properties.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+
+static constexpr int kDefaultPort = 5554;
+static constexpr int kProtocolVersion = 1;
+static constexpr int kHandshakeTimeoutMs = 2000;
+static constexpr size_t kHandshakeLength = 4;
+
+// Extract the big-endian 8-byte message length into a 64-bit number.
+static uint64_t ExtractMessageLength(const void* buffer) {
+    uint64_t ret = 0;
+    for (int i = 0; i < 8; ++i) {
+        ret |= uint64_t{reinterpret_cast<const uint8_t*>(buffer)[i]} << (56 - i * 8);
+    }
+    return ret;
+}
+
+// Encode the 64-bit number into a big-endian 8-byte message length.
+static void EncodeMessageLength(uint64_t length, void* buffer) {
+    for (int i = 0; i < 8; ++i) {
+        reinterpret_cast<uint8_t*>(buffer)[i] = length >> (56 - i * 8);
+    }
+}
+
+ClientTcpTransport::ClientTcpTransport() {
+    service_ = Socket::NewServer(Socket::Protocol::kTcp, kDefaultPort);
+
+    // A workaround to notify recovery to continue its work.
+    android::base::SetProperty("sys.usb.ffs.ready", "1");
+}
+
+ssize_t ClientTcpTransport::Read(void* data, size_t len) {
+    if (len > SSIZE_MAX) {
+        return -1;
+    }
+
+    size_t total_read = 0;
+    do {
+        // Read a new message
+        while (message_bytes_left_ == 0) {
+            if (socket_ == nullptr) {
+                ListenFastbootSocket();
+            }
+
+            char buffer[8];
+            if (socket_->ReceiveAll(buffer, 8, 0) == 8) {
+                message_bytes_left_ = ExtractMessageLength(buffer);
+            } else {
+                // If connection is closed by host, Receive will return 0 immediately.
+                socket_.reset(nullptr);
+                // In DATA phase, return error.
+                if (downloading_) {
+                    return -1;
+                }
+            }
+        }
+
+        size_t read_length = len - total_read;
+        if (read_length > message_bytes_left_) {
+            read_length = message_bytes_left_;
+        }
+        ssize_t bytes_read =
+                socket_->ReceiveAll(reinterpret_cast<char*>(data) + total_read, read_length, 0);
+        if (bytes_read == -1) {
+            socket_.reset(nullptr);
+            return -1;
+        } else {
+            message_bytes_left_ -= bytes_read;
+            total_read += bytes_read;
+        }
+    // There are more than one DATA phases if the downloading buffer is too
+    // large, like a very big system image. All of data phases should be
+    // received until the whole buffer is filled in that case.
+    } while (downloading_ && total_read < len);
+
+    return total_read;
+}
+
+ssize_t ClientTcpTransport::Write(const void* data, size_t len) {
+    if (socket_ == nullptr || len > SSIZE_MAX) {
+        return -1;
+    }
+
+    // Use multi-buffer writes for better performance.
+    char header[8];
+    EncodeMessageLength(len, header);
+
+    if (!socket_->Send(std::vector<cutils_socket_buffer_t>{{header, 8}, {data, len}})) {
+        socket_.reset(nullptr);
+        return -1;
+    }
+
+    // In DATA phase
+    if (android::base::StartsWith(reinterpret_cast<const char*>(data), RESPONSE_DATA)) {
+        downloading_ = true;
+    } else {
+        downloading_ = false;
+    }
+
+    return len;
+}
+
+int ClientTcpTransport::Close() {
+    if (socket_ == nullptr) {
+        return -1;
+    }
+    socket_.reset(nullptr);
+
+    return 0;
+}
+
+int ClientTcpTransport::Reset() {
+    return Close();
+}
+
+void ClientTcpTransport::ListenFastbootSocket() {
+    while (true) {
+        socket_ = service_->Accept();
+
+        // Handshake
+        char buffer[kHandshakeLength + 1];
+        buffer[kHandshakeLength] = '\0';
+        if (socket_->ReceiveAll(buffer, kHandshakeLength, kHandshakeTimeoutMs) !=
+            kHandshakeLength) {
+            PLOG(ERROR) << "No Handshake message received";
+            socket_.reset(nullptr);
+            continue;
+        }
+
+        if (memcmp(buffer, "FB", 2) != 0) {
+            PLOG(ERROR) << "Unrecognized initialization message";
+            socket_.reset(nullptr);
+            continue;
+        }
+
+        int version = 0;
+        if (!android::base::ParseInt(buffer + 2, &version) || version < kProtocolVersion) {
+            LOG(ERROR) << "Unknown TCP protocol version " << buffer + 2
+                       << ", our version: " << kProtocolVersion;
+            socket_.reset(nullptr);
+            continue;
+        }
+
+        std::string handshake_message(android::base::StringPrintf("FB%02d", kProtocolVersion));
+        if (!socket_->Send(handshake_message.c_str(), kHandshakeLength)) {
+            PLOG(ERROR) << "Failed to send initialization message";
+            socket_.reset(nullptr);
+            continue;
+        }
+
+        break;
+    }
+}
diff --git a/fastboot/device/tcp_client.h b/fastboot/device/tcp_client.h
new file mode 100644
index 0000000..32e9834
--- /dev/null
+++ b/fastboot/device/tcp_client.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <memory>
+
+#include "socket.h"
+#include "transport.h"
+
+class ClientTcpTransport : public Transport {
+  public:
+    ClientTcpTransport();
+    ~ClientTcpTransport() override = default;
+
+    ssize_t Read(void* data, size_t len) override;
+    ssize_t Write(const void* data, size_t len) override;
+    int Close() override;
+    int Reset() override;
+
+  private:
+    void ListenFastbootSocket();
+
+    std::unique_ptr<Socket> service_;
+    std::unique_ptr<Socket> socket_;
+    uint64_t message_bytes_left_ = 0;
+    bool downloading_ = false;
+
+    DISALLOW_COPY_AND_ASSIGN(ClientTcpTransport);
+};
diff --git a/fastboot/device/usb.cpp b/fastboot/device/usb.cpp
new file mode 100644
index 0000000..4bee7b2
--- /dev/null
+++ b/fastboot/device/usb.cpp
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "usb.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/functionfs.h>
+
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+
+using namespace std::chrono_literals;
+
+#define D(...)
+#define MAX_PACKET_SIZE_FS 64
+#define MAX_PACKET_SIZE_HS 512
+#define MAX_PACKET_SIZE_SS 1024
+
+#define USB_FFS_BULK_SIZE 16384
+
+// Number of buffers needed to fit MAX_PAYLOAD, with an extra for ZLPs.
+#define USB_FFS_NUM_BUFS ((4 * MAX_PAYLOAD / USB_FFS_BULK_SIZE) + 1)
+
+static void aio_block_init(aio_block* aiob, unsigned num_bufs) {
+    aiob->iocb.resize(num_bufs);
+    aiob->iocbs.resize(num_bufs);
+    aiob->events.resize(num_bufs);
+    aiob->num_submitted = 0;
+    for (unsigned i = 0; i < num_bufs; i++) {
+        aiob->iocbs[i] = &aiob->iocb[i];
+    }
+    memset(&aiob->ctx, 0, sizeof(aiob->ctx));
+    if (io_setup(num_bufs, &aiob->ctx)) {
+        D("[ aio: got error on io_setup (%d) ]", errno);
+    }
+}
+
+static int getMaxPacketSize(int ffs_fd) {
+    usb_endpoint_descriptor desc;
+    if (ioctl(ffs_fd, FUNCTIONFS_ENDPOINT_DESC, reinterpret_cast<unsigned long>(&desc))) {
+        D("[ could not get endpoint descriptor! (%d) ]", errno);
+        return MAX_PACKET_SIZE_HS;
+    } else {
+        return desc.wMaxPacketSize;
+    }
+}
+
+static int usb_ffs_write(usb_handle* h, const void* data, int len) {
+    D("about to write (fd=%d, len=%d)", h->bulk_in.get(), len);
+
+    const char* buf = static_cast<const char*>(data);
+    int orig_len = len;
+    while (len > 0) {
+        int write_len = std::min(USB_FFS_BULK_SIZE, len);
+        int n = write(h->bulk_in, buf, write_len);
+        if (n < 0) {
+            D("ERROR: fd = %d, n = %d: %s", h->bulk_in.get(), n, strerror(errno));
+            return -1;
+        }
+        buf += n;
+        len -= n;
+    }
+
+    D("[ done fd=%d ]", h->bulk_in.get());
+    return orig_len;
+}
+
+static int usb_ffs_read(usb_handle* h, void* data, int len, bool allow_partial) {
+    D("about to read (fd=%d, len=%d)", h->bulk_out.get(), len);
+
+    char* buf = static_cast<char*>(data);
+    int orig_len = len;
+    unsigned count = 0;
+    while (len > 0) {
+        int read_len = std::min(USB_FFS_BULK_SIZE, len);
+        int n = read(h->bulk_out, buf, read_len);
+        if (n < 0) {
+            D("ERROR: fd = %d, n = %d: %s", h->bulk_out.get(), n, strerror(errno));
+            return -1;
+        }
+        buf += n;
+        len -= n;
+        count += n;
+
+        // For fastbootd command such as "getvar all", len parameter is always set 64.
+        // But what we read is actually less than 64.
+        // For example, length 10 for "getvar all" command.
+        // If we get less data than expected, this means there should be no more data.
+        if (allow_partial && n < read_len) {
+            orig_len = count;
+            break;
+        }
+    }
+
+    D("[ done fd=%d ]", h->bulk_out.get());
+    return orig_len;
+}
+
+static int usb_ffs_do_aio(usb_handle* h, const void* data, int len, bool read) {
+    aio_block* aiob = read ? &h->read_aiob : &h->write_aiob;
+    bool zero_packet = false;
+
+    int num_bufs = len / h->io_size + (len % h->io_size == 0 ? 0 : 1);
+    const char* cur_data = reinterpret_cast<const char*>(data);
+    int packet_size = getMaxPacketSize(aiob->fd);
+
+    if (posix_madvise(const_cast<void*>(data), len, POSIX_MADV_SEQUENTIAL | POSIX_MADV_WILLNEED) <
+        0) {
+        D("[ Failed to madvise: %d ]", errno);
+    }
+
+    for (int i = 0; i < num_bufs; i++) {
+        int buf_len = std::min(len, static_cast<int>(h->io_size));
+        io_prep(&aiob->iocb[i], aiob->fd, cur_data, buf_len, 0, read);
+
+        len -= buf_len;
+        cur_data += buf_len;
+
+        if (len == 0 && buf_len % packet_size == 0 && read) {
+            // adb does not expect the device to send a zero packet after data transfer,
+            // but the host *does* send a zero packet for the device to read.
+            zero_packet = h->reads_zero_packets;
+        }
+    }
+    if (zero_packet) {
+        io_prep(&aiob->iocb[num_bufs], aiob->fd, reinterpret_cast<const void*>(cur_data),
+                packet_size, 0, read);
+        num_bufs += 1;
+    }
+
+    while (true) {
+        if (TEMP_FAILURE_RETRY(io_submit(aiob->ctx, num_bufs, aiob->iocbs.data())) < num_bufs) {
+            PLOG(ERROR) << "aio: got error submitting " << (read ? "read" : "write");
+            return -1;
+        }
+        if (TEMP_FAILURE_RETRY(io_getevents(aiob->ctx, num_bufs, num_bufs, aiob->events.data(),
+                                            nullptr)) < num_bufs) {
+            PLOG(ERROR) << "aio: got error waiting " << (read ? "read" : "write");
+            return -1;
+        }
+        if (num_bufs == 1 && aiob->events[0].res == -EINTR) {
+            continue;
+        }
+        int ret = 0;
+        for (int i = 0; i < num_bufs; i++) {
+            if (aiob->events[i].res < 0) {
+                errno = -aiob->events[i].res;
+                PLOG(ERROR) << "aio: got error event on " << (read ? "read" : "write")
+                            << " total bufs " << num_bufs;
+                return -1;
+            }
+            ret += aiob->events[i].res;
+        }
+        return ret;
+    }
+}
+
+static int usb_ffs_aio_read(usb_handle* h, void* data, int len, bool /* allow_partial */) {
+    return usb_ffs_do_aio(h, data, len, true);
+}
+
+static int usb_ffs_aio_write(usb_handle* h, const void* data, int len) {
+    return usb_ffs_do_aio(h, data, len, false);
+}
+
+static void usb_ffs_close(usb_handle* h) {
+    LOG(INFO) << "closing functionfs transport";
+
+    h->bulk_out.reset();
+    h->bulk_in.reset();
+
+    // Notify usb_adb_open_thread to open a new connection.
+    h->lock.lock();
+    h->open_new_connection = true;
+    h->lock.unlock();
+    h->notify.notify_one();
+}
+
+usb_handle* create_usb_handle(unsigned num_bufs, unsigned io_size) {
+    usb_handle* h = new usb_handle();
+
+    if (android::base::GetBoolProperty("sys.usb.ffs.aio_compat", false)) {
+        // Devices on older kernels (< 3.18) will not have aio support for ffs
+        // unless backported. Fall back on the non-aio functions instead.
+        h->write = usb_ffs_write;
+        h->read = usb_ffs_read;
+    } else {
+        h->write = usb_ffs_aio_write;
+        h->read = usb_ffs_aio_read;
+        aio_block_init(&h->read_aiob, num_bufs);
+        aio_block_init(&h->write_aiob, num_bufs);
+    }
+    h->io_size = io_size;
+    h->close = usb_ffs_close;
+    return h;
+}
diff --git a/fastboot/device/usb.h b/fastboot/device/usb.h
new file mode 100644
index 0000000..6c3f542
--- /dev/null
+++ b/fastboot/device/usb.h
@@ -0,0 +1,63 @@
+#pragma once
+
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <linux/usb/functionfs.h>
+
+#include <atomic>
+#include <condition_variable>
+#include <mutex>
+#include <vector>
+
+#include <android-base/unique_fd.h>
+#include <asyncio/AsyncIO.h>
+
+struct aio_block {
+    std::vector<struct iocb> iocb;
+    std::vector<struct iocb*> iocbs;
+    std::vector<struct io_event> events;
+    aio_context_t ctx;
+    int num_submitted;
+    int fd;
+};
+
+struct usb_handle {
+    usb_handle() {}
+
+    std::condition_variable notify;
+    std::mutex lock;
+    bool open_new_connection = true;
+
+    int (*write)(usb_handle* h, const void* data, int len);
+    int (*read)(usb_handle* h, void* data, int len, bool allow_partial);
+    void (*close)(usb_handle* h);
+
+    // FunctionFS
+    android::base::unique_fd control;
+    android::base::unique_fd bulk_out;  // "out" from the host's perspective => source for adbd
+    android::base::unique_fd bulk_in;   // "in" from the host's perspective => sink for adbd
+
+    // Access to these blocks is very not thread safe. Have one block for each of the
+    // read and write threads.
+    struct aio_block read_aiob;
+    struct aio_block write_aiob;
+
+    bool reads_zero_packets;
+    size_t io_size;
+};
+
+usb_handle* create_usb_handle(unsigned num_bufs, unsigned io_size);
diff --git a/fastboot/device/usb_client.cpp b/fastboot/device/usb_client.cpp
index 1014291..9c80765 100644
--- a/fastboot/device/usb_client.cpp
+++ b/fastboot/device/usb_client.cpp
@@ -258,7 +258,7 @@
         auto bytes_read_now =
                 handle_->read(handle_.get(), char_data, bytes_to_read, true /* allow_partial */);
         if (bytes_read_now < 0) {
-            return bytes_read_total;
+            return bytes_read_total == 0 ? -1 : bytes_read_total;
         }
         bytes_read_total += bytes_read_now;
         char_data += bytes_read_now;
@@ -279,7 +279,7 @@
         auto bytes_to_write = std::min(len - bytes_written_total, kFbFfsNumBufs * kFbFfsBufSize);
         auto bytes_written_now = handle_->write(handle_.get(), data, bytes_to_write);
         if (bytes_written_now < 0) {
-            return bytes_written_total;
+            return bytes_written_total == 0 ? -1 : bytes_written_total;
         }
         bytes_written_total += bytes_written_now;
         char_data += bytes_written_now;
@@ -297,3 +297,7 @@
     CloseFunctionFs(handle_.get());
     return 0;
 }
+
+int ClientUsbTransport::Reset() {
+    return 0;
+}
diff --git a/fastboot/device/usb_client.h b/fastboot/device/usb_client.h
index 3694f9a..e702a0d 100644
--- a/fastboot/device/usb_client.h
+++ b/fastboot/device/usb_client.h
@@ -17,7 +17,7 @@
 
 #include <memory>
 
-#include <adbd/usb.h>
+#include "usb.h"
 
 #include "transport.h"
 
@@ -29,6 +29,7 @@
     ssize_t Read(void* data, size_t len) override;
     ssize_t Write(const void* data, size_t len) override;
     int Close() override;
+    int Reset() override;
 
   private:
     std::unique_ptr<usb_handle> handle_;
diff --git a/fastboot/device/utility.cpp b/fastboot/device/utility.cpp
index 2ebd57d..7c6ac89 100644
--- a/fastboot/device/utility.cpp
+++ b/fastboot/device/utility.cpp
@@ -26,6 +26,7 @@
 #include <android-base/properties.h>
 #include <android-base/strings.h>
 #include <fs_mgr.h>
+#include <fs_mgr/roots.h>
 #include <fs_mgr_dm_linear.h>
 #include <liblp/builder.h>
 #include <liblp/liblp.h>
@@ -56,12 +57,20 @@
     if (!path) {
         return false;
     }
+
+    CreateLogicalPartitionParams params = {
+            .block_device = *path,
+            .metadata_slot = slot_number,
+            .partition_name = partition_name,
+            .force_writable = true,
+            .timeout_ms = 5s,
+    };
     std::string dm_path;
-    if (!CreateLogicalPartition(path->c_str(), slot_number, partition_name, true, 5s, &dm_path)) {
+    if (!CreateLogicalPartition(params, &dm_path)) {
         LOG(ERROR) << "Could not map partition: " << partition_name;
         return false;
     }
-    auto closer = [partition_name]() -> void { DestroyLogicalPartition(partition_name, 5s); };
+    auto closer = [partition_name]() -> void { DestroyLogicalPartition(partition_name); };
     *handle = PartitionHandle(dm_path, std::move(closer));
     return true;
 }
@@ -232,3 +241,29 @@
     }
     return current_slot_suffix;
 }
+
+AutoMountMetadata::AutoMountMetadata() {
+    android::fs_mgr::Fstab proc_mounts;
+    if (!ReadFstabFromFile("/proc/mounts", &proc_mounts)) {
+        LOG(ERROR) << "Could not read /proc/mounts";
+        return;
+    }
+
+    if (GetEntryForMountPoint(&proc_mounts, "/metadata")) {
+        mounted_ = true;
+        return;
+    }
+
+    if (!ReadDefaultFstab(&fstab_)) {
+        LOG(ERROR) << "Could not read default fstab";
+        return;
+    }
+    mounted_ = EnsurePathMounted(&fstab_, "/metadata");
+    should_unmount_ = true;
+}
+
+AutoMountMetadata::~AutoMountMetadata() {
+    if (mounted_ && should_unmount_) {
+        EnsurePathUnmounted(&fstab_, "/metadata");
+    }
+}
diff --git a/fastboot/device/utility.h b/fastboot/device/utility.h
index bfeeb74..3b71ef0 100644
--- a/fastboot/device/utility.h
+++ b/fastboot/device/utility.h
@@ -20,6 +20,7 @@
 
 #include <android-base/unique_fd.h>
 #include <android/hardware/boot/1.0/IBootControl.h>
+#include <fstab/fstab.h>
 #include <liblp/liblp.h>
 
 // Logical partitions are only mapped to a block device as needed, and
@@ -51,6 +52,18 @@
     std::function<void()> closer_;
 };
 
+class AutoMountMetadata {
+  public:
+    AutoMountMetadata();
+    ~AutoMountMetadata();
+    explicit operator bool() const { return mounted_; }
+
+  private:
+    android::fs_mgr::Fstab fstab_;
+    bool mounted_ = false;
+    bool should_unmount_ = false;
+};
+
 class FastbootDevice;
 
 // On normal devices, the super partition is always named "super". On retrofit
diff --git a/fastboot/device/variables.cpp b/fastboot/device/variables.cpp
index 130a3cf..e7d8bc3 100644
--- a/fastboot/device/variables.cpp
+++ b/fastboot/device/variables.cpp
@@ -23,6 +23,7 @@
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
+#include <android/hardware/boot/1.1/IBootControl.h>
 #include <ext4_utils/ext4_utils.h>
 #include <fs_mgr.h>
 #include <healthhalutils/HealthHalUtils.h>
@@ -34,9 +35,11 @@
 
 using ::android::hardware::boot::V1_0::BoolResult;
 using ::android::hardware::boot::V1_0::Slot;
+using ::android::hardware::boot::V1_1::MergeStatus;
 using ::android::hardware::fastboot::V1_0::FileSystemType;
 using ::android::hardware::fastboot::V1_0::Result;
 using ::android::hardware::fastboot::V1_0::Status;
+using IBootControl1_1 = ::android::hardware::boot::V1_1::IBootControl;
 using namespace android::fs_mgr;
 
 constexpr char kFastbootProtocolVersion[] = "0.4";
@@ -59,6 +62,18 @@
     return true;
 }
 
+bool GetOsVersion(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                  std::string* message) {
+    *message = android::base::GetProperty("ro.build.version.release", "");
+    return true;
+}
+
+bool GetVndkVersion(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                    std::string* message) {
+    *message = android::base::GetProperty("ro.vndk.version", "");
+    return true;
+}
+
 bool GetProduct(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
                 std::string* message) {
     *message = android::base::GetProperty("ro.product.device", "");
@@ -424,3 +439,73 @@
     *message = fs_mgr_get_super_partition_name(slot_number);
     return true;
 }
+
+bool GetSnapshotUpdateStatus(FastbootDevice* device, const std::vector<std::string>& /* args */,
+                             std::string* message) {
+    // Note that we use the HAL rather than mounting /metadata, since we want
+    // our results to match the bootloader.
+    auto hal = device->boot1_1();
+    if (!hal) {
+        *message = "not supported";
+        return false;
+    }
+
+    MergeStatus status = hal->getSnapshotMergeStatus();
+    switch (status) {
+        case MergeStatus::SNAPSHOTTED:
+            *message = "snapshotted";
+            break;
+        case MergeStatus::MERGING:
+            *message = "merging";
+            break;
+        default:
+            *message = "none";
+            break;
+    }
+    return true;
+}
+
+bool GetCpuAbi(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+               std::string* message) {
+    *message = android::base::GetProperty("ro.product.cpu.abi", "");
+    return true;
+}
+
+bool GetSystemFingerprint(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                          std::string* message) {
+    *message = android::base::GetProperty("ro.system.build.fingerprint", "");
+    if (message->empty()) {
+        *message = android::base::GetProperty("ro.build.fingerprint", "");
+    }
+    return true;
+}
+
+bool GetVendorFingerprint(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                          std::string* message) {
+    *message = android::base::GetProperty("ro.vendor.build.fingerprint", "");
+    return true;
+}
+
+bool GetDynamicPartition(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                         std::string* message) {
+    *message = android::base::GetProperty("ro.boot.dynamic_partitions", "");
+    return true;
+}
+
+bool GetFirstApiLevel(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                      std::string* message) {
+    *message = android::base::GetProperty("ro.product.first_api_level", "");
+    return true;
+}
+
+bool GetSecurityPatchLevel(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                           std::string* message) {
+    *message = android::base::GetProperty("ro.build.version.security_patch", "");
+    return true;
+}
+
+bool GetTrebleEnabled(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                      std::string* message) {
+    *message = android::base::GetProperty("ro.treble.enabled", "");
+    return true;
+}
diff --git a/fastboot/device/variables.h b/fastboot/device/variables.h
index 015a4c5..c11e472 100644
--- a/fastboot/device/variables.h
+++ b/fastboot/device/variables.h
@@ -26,6 +26,10 @@
                           std::string* message);
 bool GetBasebandVersion(FastbootDevice* device, const std::vector<std::string>& args,
                         std::string* message);
+bool GetOsVersion(FastbootDevice* device, const std::vector<std::string>& args,
+                  std::string* message);
+bool GetVndkVersion(FastbootDevice* device, const std::vector<std::string>& args,
+                    std::string* message);
 bool GetProduct(FastbootDevice* device, const std::vector<std::string>& args, std::string* message);
 bool GetSerial(FastbootDevice* device, const std::vector<std::string>& args, std::string* message);
 bool GetSecure(FastbootDevice* device, const std::vector<std::string>& args, std::string* message);
@@ -61,6 +65,21 @@
                      std::string* message);
 bool GetSuperPartitionName(FastbootDevice* device, const std::vector<std::string>& args,
                            std::string* message);
+bool GetSnapshotUpdateStatus(FastbootDevice* device, const std::vector<std::string>& args,
+                             std::string* message);
+bool GetCpuAbi(FastbootDevice* device, const std::vector<std::string>& args, std::string* message);
+bool GetSystemFingerprint(FastbootDevice* device, const std::vector<std::string>& args,
+                          std::string* message);
+bool GetVendorFingerprint(FastbootDevice* device, const std::vector<std::string>& args,
+                          std::string* message);
+bool GetDynamicPartition(FastbootDevice* device, const std::vector<std::string>& args,
+                         std::string* message);
+bool GetFirstApiLevel(FastbootDevice* device, const std::vector<std::string>& args,
+                      std::string* message);
+bool GetSecurityPatchLevel(FastbootDevice* device, const std::vector<std::string>& args,
+                           std::string* message);
+bool GetTrebleEnabled(FastbootDevice* device, const std::vector<std::string>& args,
+                      std::string* message);
 
 // Helpers for getvar all.
 std::vector<std::vector<std::string>> GetAllPartitionArgsWithSlot(FastbootDevice* device);
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index c8caa67..5307a00 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -51,6 +51,7 @@
 #include <utility>
 #include <vector>
 
+#include <android-base/endian.h>
 #include <android-base/file.h>
 #include <android-base/macros.h>
 #include <android-base/parseint.h>
@@ -59,6 +60,7 @@
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 #include <build/version.h>
+#include <libavb/libavb.h>
 #include <liblp/liblp.h>
 #include <platform_tools_version.h>
 #include <sparse/sparse.h>
@@ -144,14 +146,13 @@
     { "dts",      "dt.img",           "dt.sig",       "dts",      true,  ImageType::BootCritical },
     { "odm",      "odm.img",          "odm.sig",      "odm",      true,  ImageType::Normal },
     { "product",  "product.img",      "product.sig",  "product",  true,  ImageType::Normal },
-    { "product_services",
-                  "product_services.img",
-                                      "product_services.sig",
-                                                      "product_services",
-                                                                  true,  ImageType::Normal },
     { "recovery", "recovery.img",     "recovery.sig", "recovery", true,  ImageType::BootCritical },
     { "super",    "super.img",        "super.sig",    "super",    true,  ImageType::Extra },
     { "system",   "system.img",       "system.sig",   "system",   false, ImageType::Normal },
+    { "system_ext",
+                  "system_ext.img",   "system_ext.sig",
+                                                      "system_ext",
+                                                                  true,  ImageType::Normal },
     { nullptr,    "system_other.img", "system.sig",   "system",   true,  ImageType::Normal },
     { "userdata", "userdata.img",     "userdata.sig", "userdata", true,  ImageType::Extra },
     { "vbmeta",   "vbmeta.img",       "vbmeta.sig",   "vbmeta",   true,  ImageType::BootCritical },
@@ -161,6 +162,10 @@
                                                       "vbmeta_system",
                                                                   true,  ImageType::BootCritical },
     { "vendor",   "vendor.img",       "vendor.sig",   "vendor",   true,  ImageType::Normal },
+    { "vendor_boot",
+                  "vendor_boot.img",  "vendor_boot.sig",
+                                                      "vendor_boot",
+                                                                  true,  ImageType::BootCritical },
     { nullptr,    "vendor_other.img", "vendor.sig",   "vendor",   true,  ImageType::Normal },
         // clang-format on
 };
@@ -389,6 +394,14 @@
             " set_active SLOT            Set the active slot.\n"
             " oem [COMMAND...]           Execute OEM-specific command.\n"
             " gsi wipe|disable           Wipe or disable a GSI installation (fastbootd only).\n"
+            " wipe-super [SUPER_EMPTY]   Wipe the super partition. This will reset it to\n"
+            "                            contain an empty set of default dynamic partitions.\n"
+            " snapshot-update cancel     On devices that support snapshot-based updates, cancel\n"
+            "                            an in-progress update. This may make the device\n"
+            "                            unbootable until it is reflashed.\n"
+            " snapshot-update merge      On devices that support snapshot-based updates, finish\n"
+            "                            an in-progress update if it is in the \"merging\"\n"
+            "                            phase.\n"
             "\n"
             "boot image:\n"
             " boot KERNEL [RAMDISK [SECOND]]\n"
@@ -451,7 +464,7 @@
     }
 
     // Is this actually a boot image?
-    if (kernel_data.size() < sizeof(boot_img_hdr_v2)) {
+    if (kernel_data.size() < sizeof(boot_img_hdr_v3)) {
         die("cannot load '%s': too short", kernel.c_str());
     }
     if (!memcmp(kernel_data.data(), BOOT_MAGIC, BOOT_MAGIC_SIZE)) {
@@ -480,7 +493,7 @@
 
     std::vector<char> dtb_data;
     if (!g_dtb_path.empty()) {
-        if (g_boot_img_hdr.header_version < 2) {
+        if (g_boot_img_hdr.header_version != 2) {
                     die("Argument dtb not supported for boot image header version %d\n",
                         g_boot_img_hdr.header_version);
         }
@@ -502,9 +515,8 @@
 
 static bool UnzipToMemory(ZipArchiveHandle zip, const std::string& entry_name,
                           std::vector<char>* out) {
-    ZipString zip_entry_name(entry_name.c_str());
     ZipEntry zip_entry;
-    if (FindEntry(zip, zip_entry_name, &zip_entry) != 0) {
+    if (FindEntry(zip, entry_name, &zip_entry) != 0) {
         fprintf(stderr, "archive does not contain '%s'\n", entry_name.c_str());
         return false;
     }
@@ -614,9 +626,8 @@
 static int unzip_to_file(ZipArchiveHandle zip, const char* entry_name) {
     unique_fd fd(make_temporary_fd(entry_name));
 
-    ZipString zip_entry_name(entry_name);
     ZipEntry zip_entry;
-    if (FindEntry(zip, zip_entry_name, &zip_entry) != 0) {
+    if (FindEntry(zip, entry_name, &zip_entry) != 0) {
         fprintf(stderr, "archive does not contain '%s'\n", entry_name);
         errno = ENOENT;
         return -1;
@@ -871,7 +882,7 @@
         return false;
     }
 
-    if (sparse_file* s = sparse_file_import_auto(fd, false, false)) {
+    if (sparse_file* s = sparse_file_import(fd, false, false)) {
         buf->image_size = sparse_file_len(s, false, false);
         sparse_file_destroy(s);
     } else {
@@ -916,33 +927,50 @@
     return load_buf_fd(fd.release(), buf);
 }
 
-static void rewrite_vbmeta_buffer(struct fastboot_buffer* buf) {
+static void rewrite_vbmeta_buffer(struct fastboot_buffer* buf, bool vbmeta_in_boot) {
     // Buffer needs to be at least the size of the VBMeta struct which
     // is 256 bytes.
     if (buf->sz < 256) {
         return;
     }
 
-    int fd = make_temporary_fd("vbmeta rewriting");
-
     std::string data;
     if (!android::base::ReadFdToString(buf->fd, &data)) {
         die("Failed reading from vbmeta");
     }
 
+    uint64_t vbmeta_offset = 0;
+    if (vbmeta_in_boot) {
+        // Tries to locate top-level vbmeta from boot.img footer.
+        uint64_t footer_offset = buf->sz - AVB_FOOTER_SIZE;
+        if (0 != data.compare(footer_offset, AVB_FOOTER_MAGIC_LEN, AVB_FOOTER_MAGIC)) {
+            die("Failed to find AVB_FOOTER at offset: %" PRId64, footer_offset);
+        }
+        const AvbFooter* footer = reinterpret_cast<const AvbFooter*>(data.c_str() + footer_offset);
+        vbmeta_offset = be64toh(footer->vbmeta_offset);
+    }
+    // Ensures there is AVB_MAGIC at vbmeta_offset.
+    if (0 != data.compare(vbmeta_offset, AVB_MAGIC_LEN, AVB_MAGIC)) {
+        die("Failed to find AVB_MAGIC at offset: %" PRId64, vbmeta_offset);
+    }
+
+    fprintf(stderr, "Rewriting vbmeta struct at offset: %" PRId64 "\n", vbmeta_offset);
+
     // There's a 32-bit big endian |flags| field at offset 120 where
     // bit 0 corresponds to disable-verity and bit 1 corresponds to
     // disable-verification.
     //
     // See external/avb/libavb/avb_vbmeta_image.h for the layout of
     // the VBMeta struct.
+    uint64_t flags_offset = 123 + vbmeta_offset;
     if (g_disable_verity) {
-        data[123] |= 0x01;
+        data[flags_offset] |= 0x01;
     }
     if (g_disable_verification) {
-        data[123] |= 0x02;
+        data[flags_offset] |= 0x02;
     }
 
+    int fd = make_temporary_fd("vbmeta rewriting");
     if (!android::base::WriteStringToFd(data, fd)) {
         die("Failed writing to modified vbmeta");
     }
@@ -951,14 +979,84 @@
     lseek(fd, 0, SEEK_SET);
 }
 
+static bool has_vbmeta_partition() {
+    std::string partition_type;
+    return fb->GetVar("partition-type:vbmeta", &partition_type) == fastboot::SUCCESS ||
+           fb->GetVar("partition-type:vbmeta_a", &partition_type) == fastboot::SUCCESS ||
+           fb->GetVar("partition-type:vbmeta_b", &partition_type) == fastboot::SUCCESS;
+}
+
+static std::string fb_fix_numeric_var(std::string var) {
+    // Some bootloaders (angler, for example), send spurious leading whitespace.
+    var = android::base::Trim(var);
+    // Some bootloaders (hammerhead, for example) use implicit hex.
+    // This code used to use strtol with base 16.
+    if (!android::base::StartsWith(var, "0x")) var = "0x" + var;
+    return var;
+}
+
+static void copy_boot_avb_footer(const std::string& partition, struct fastboot_buffer* buf) {
+    if (buf->sz < AVB_FOOTER_SIZE) {
+        return;
+    }
+
+    std::string partition_size_str;
+    if (fb->GetVar("partition-size:" + partition, &partition_size_str) != fastboot::SUCCESS) {
+        die("cannot get boot partition size");
+    }
+
+    partition_size_str = fb_fix_numeric_var(partition_size_str);
+    int64_t partition_size;
+    if (!android::base::ParseInt(partition_size_str, &partition_size)) {
+        die("Couldn't parse partition size '%s'.", partition_size_str.c_str());
+    }
+    if (partition_size == buf->sz) {
+        return;
+    }
+    if (partition_size < buf->sz) {
+        die("boot partition is smaller than boot image");
+    }
+
+    std::string data;
+    if (!android::base::ReadFdToString(buf->fd, &data)) {
+        die("Failed reading from boot");
+    }
+
+    uint64_t footer_offset = buf->sz - AVB_FOOTER_SIZE;
+    if (0 != data.compare(footer_offset, AVB_FOOTER_MAGIC_LEN, AVB_FOOTER_MAGIC)) {
+        return;
+    }
+
+    int fd = make_temporary_fd("boot rewriting");
+    if (!android::base::WriteStringToFd(data, fd)) {
+        die("Failed writing to modified boot");
+    }
+    lseek(fd, partition_size - AVB_FOOTER_SIZE, SEEK_SET);
+    if (!android::base::WriteStringToFd(data.substr(footer_offset), fd)) {
+        die("Failed copying AVB footer in boot");
+    }
+    close(buf->fd);
+    buf->fd = fd;
+    buf->sz = partition_size;
+    lseek(fd, 0, SEEK_SET);
+}
+
 static void flash_buf(const std::string& partition, struct fastboot_buffer *buf)
 {
     sparse_file** s;
 
+    if (partition == "boot" || partition == "boot_a" || partition == "boot_b") {
+        copy_boot_avb_footer(partition, buf);
+    }
+
     // Rewrite vbmeta if that's what we're flashing and modification has been requested.
-    if ((g_disable_verity || g_disable_verification) &&
-        (partition == "vbmeta" || partition == "vbmeta_a" || partition == "vbmeta_b")) {
-        rewrite_vbmeta_buffer(buf);
+    if (g_disable_verity || g_disable_verification) {
+        if (partition == "vbmeta" || partition == "vbmeta_a" || partition == "vbmeta_b") {
+            rewrite_vbmeta_buffer(buf, false /* vbmeta_in_boot */);
+        } else if (!has_vbmeta_partition() &&
+                   (partition == "boot" || partition == "boot_a" || partition == "boot_b")) {
+            rewrite_vbmeta_buffer(buf, true /* vbmeta_in_boot */ );
+        }
     }
 
     switch (buf->type) {
@@ -1183,6 +1281,14 @@
     target_sparse_limit = -1;
 }
 
+static void CancelSnapshotIfNeeded() {
+    std::string merge_status = "none";
+    if (fb->GetVar(FB_VAR_SNAPSHOT_UPDATE_STATUS, &merge_status) == fastboot::SUCCESS &&
+        merge_status != "none") {
+        fb->SnapshotUpdateCommand("cancel");
+    }
+}
+
 class ImageSource {
   public:
     virtual bool ReadFile(const std::string& name, std::vector<char>* out) const = 0;
@@ -1235,6 +1341,8 @@
     DetermineSecondarySlot();
     CollectImages();
 
+    CancelSnapshotIfNeeded();
+
     // First flash boot partitions. We allow this to happen either in userspace
     // or in bootloader fastboot.
     FlashImages(boot_images_);
@@ -1436,15 +1544,6 @@
     fb->RawCommand(command, "");
 }
 
-static std::string fb_fix_numeric_var(std::string var) {
-    // Some bootloaders (angler, for example), send spurious leading whitespace.
-    var = android::base::Trim(var);
-    // Some bootloaders (hammerhead, for example) use implicit hex.
-    // This code used to use strtol with base 16.
-    if (!android::base::StartsWith(var, "0x")) var = "0x" + var;
-    return var;
-}
-
 static unsigned fb_get_flash_block_size(std::string name) {
     std::string sizeString;
     if (fb->GetVar(name, &sizeString) != fastboot::SUCCESS || sizeString.empty()) {
@@ -1584,6 +1683,76 @@
     return false;
 }
 
+static bool wipe_super(const android::fs_mgr::LpMetadata& metadata, const std::string& slot,
+                       std::string* message) {
+    auto super_device = GetMetadataSuperBlockDevice(metadata);
+    auto block_size = metadata.geometry.logical_block_size;
+    auto super_bdev_name = android::fs_mgr::GetBlockDevicePartitionName(*super_device);
+
+    if (super_bdev_name != "super") {
+        // retrofit devices do not allow flashing to the retrofit partitions,
+        // so enable it if we can.
+        fb->RawCommand("oem allow-flash-super");
+    }
+
+    // Note: do not use die() in here, since we want TemporaryDir's destructor
+    // to be called.
+    TemporaryDir temp_dir;
+
+    bool ok;
+    if (metadata.block_devices.size() > 1) {
+        ok = WriteSplitImageFiles(temp_dir.path, metadata, block_size, {}, true);
+    } else {
+        auto image_path = temp_dir.path + "/"s + super_bdev_name + ".img";
+        ok = WriteToImageFile(image_path, metadata, block_size, {}, true);
+    }
+    if (!ok) {
+        *message = "Could not generate a flashable super image file";
+        return false;
+    }
+
+    for (const auto& block_device : metadata.block_devices) {
+        auto partition = android::fs_mgr::GetBlockDevicePartitionName(block_device);
+        bool force_slot = !!(block_device.flags & LP_BLOCK_DEVICE_SLOT_SUFFIXED);
+
+        std::string image_name;
+        if (metadata.block_devices.size() > 1) {
+            image_name = "super_" + partition + ".img";
+        } else {
+            image_name = partition + ".img";
+        }
+
+        auto image_path = temp_dir.path + "/"s + image_name;
+        auto flash = [&](const std::string& partition_name) {
+            do_flash(partition_name.c_str(), image_path.c_str());
+        };
+        do_for_partitions(partition, slot, flash, force_slot);
+
+        unlink(image_path.c_str());
+    }
+    return true;
+}
+
+static void do_wipe_super(const std::string& image, const std::string& slot_override) {
+    if (access(image.c_str(), R_OK) != 0) {
+        die("Could not read image: %s", image.c_str());
+    }
+    auto metadata = android::fs_mgr::ReadFromImageFile(image);
+    if (!metadata) {
+        die("Could not parse image: %s", image.c_str());
+    }
+
+    auto slot = slot_override;
+    if (slot.empty()) {
+        slot = get_current_slot();
+    }
+
+    std::string message;
+    if (!wipe_super(*metadata.get(), slot, &message)) {
+        die(message);
+    }
+}
+
 int FastBootTool::Main(int argc, char* argv[]) {
     bool wants_wipe = false;
     bool wants_reboot = false;
@@ -1960,12 +2129,32 @@
             } else {
                 syntax_error("expected 'wipe' or 'disable'");
             }
+        } else if (command == "wipe-super") {
+            std::string image;
+            if (args.empty()) {
+                image = find_item_given_name("super_empty.img");
+            } else {
+                image = next_arg(&args);
+            }
+            do_wipe_super(image, slot_override);
+        } else if (command == "snapshot-update") {
+            std::string arg;
+            if (!args.empty()) {
+                arg = next_arg(&args);
+            }
+            if (!arg.empty() && (arg != "cancel" && arg != "merge")) {
+                syntax_error("expected: snapshot-update [cancel|merge]");
+            }
+            fb->SnapshotUpdateCommand(arg);
         } else {
             syntax_error("unknown command %s", command.c_str());
         }
     }
 
     if (wants_wipe) {
+        if (force_flash) {
+            CancelSnapshotIfNeeded();
+        }
         std::vector<std::string> partitions = { "userdata", "cache", "metadata" };
         for (const auto& partition : partitions) {
             std::string partition_type;
@@ -1977,10 +2166,10 @@
             if (partition == "userdata" && set_fbe_marker) {
                 fprintf(stderr, "setting FBE marker on initial userdata...\n");
                 std::string initial_userdata_dir = create_fbemarker_tmpdir();
-                fb_perform_format(partition, 1, "", "", initial_userdata_dir);
+                fb_perform_format(partition, 1, partition_type, "", initial_userdata_dir);
                 delete_fbemarker_tmpdir(initial_userdata_dir);
             } else {
-                fb_perform_format(partition, 1, "", "", "");
+                fb_perform_format(partition, 1, partition_type, "", "");
             }
         }
     }
diff --git a/fastboot/fastboot_driver.cpp b/fastboot/fastboot_driver.cpp
index fea0a77..8d534ea 100644
--- a/fastboot/fastboot_driver.cpp
+++ b/fastboot/fastboot_driver.cpp
@@ -122,6 +122,15 @@
                       response, info);
 }
 
+RetCode FastBootDriver::SnapshotUpdateCommand(const std::string& command, std::string* response,
+                                              std::vector<std::string>* info) {
+    prolog_(StringPrintf("Snapshot %s", command.c_str()));
+    std::string raw = FB_CMD_SNAPSHOT_UPDATE ":" + command;
+    auto result = RawCommand(raw, response, info);
+    epilog_(result);
+    return result;
+}
+
 RetCode FastBootDriver::FlashPartition(const std::string& partition,
                                        const std::vector<char>& data) {
     RetCode ret;
@@ -291,7 +300,7 @@
 RetCode FastBootDriver::UploadInner(const std::string& outfile, std::string* response,
                                     std::vector<std::string>* info) {
     RetCode ret;
-    int dsize;
+    int dsize = 0;
     if ((ret = RawCommand(FB_CMD_UPLOAD, response, info, &dsize))) {
         error_ = "Upload request failed: " + error_;
         return ret;
diff --git a/fastboot/fastboot_driver.h b/fastboot/fastboot_driver.h
index af02637..7265632 100644
--- a/fastboot/fastboot_driver.h
+++ b/fastboot/fastboot_driver.h
@@ -104,6 +104,8 @@
                       std::vector<std::string>* info = nullptr);
     RetCode Upload(const std::string& outfile, std::string* response = nullptr,
                    std::vector<std::string>* info = nullptr);
+    RetCode SnapshotUpdateCommand(const std::string& command, std::string* response = nullptr,
+                                  std::vector<std::string>* info = nullptr);
 
     /* HIGHER LEVEL COMMANDS -- Composed of the commands above */
     RetCode FlashPartition(const std::string& partition, const std::vector<char>& data);
diff --git a/fastboot/fuzzy_fastboot/Android.bp b/fastboot/fuzzy_fastboot/Android.bp
index 277cc3a..aa449b2 100644
--- a/fastboot/fuzzy_fastboot/Android.bp
+++ b/fastboot/fuzzy_fastboot/Android.bp
@@ -5,7 +5,7 @@
   srcs: [
     "main.cpp",
     "extensions.cpp",
-    "usb_transport_sniffer.cpp",
+    "transport_sniffer.cpp",
     "fixtures.cpp",
     "test_utils.cpp",
   ],
@@ -31,6 +31,8 @@
     "libext4_utils",
   ],
 
+  stl: "libc++_static",
+
   // Static libs (libfastboot2) shared library dependencies are not transitively included
   // This is needed to avoid link time errors when building for mac
   target: {
@@ -40,5 +42,13 @@
           "-framework IOKit",
       ],
     },
-  }
+  },
+
+  // Disable auto-generation of test config as this binary itself is not a test in the test suites,
+  // rather it is used by other tests.
+  auto_gen_config: false,
+  test_suites: [
+    "general-tests",
+    "vts",
+  ],
 }
diff --git a/fastboot/fuzzy_fastboot/fixtures.cpp b/fastboot/fuzzy_fastboot/fixtures.cpp
index bc13a8c..9b5e5f7 100644
--- a/fastboot/fuzzy_fastboot/fixtures.cpp
+++ b/fastboot/fuzzy_fastboot/fixtures.cpp
@@ -45,15 +45,17 @@
 #include <vector>
 
 #include <android-base/stringprintf.h>
+#include <android-base/strings.h>
 #include <gtest/gtest.h>
 
 #include "fastboot_driver.h"
+#include "tcp.h"
 #include "usb.h"
 
 #include "extensions.h"
 #include "fixtures.h"
 #include "test_utils.h"
-#include "usb_transport_sniffer.h"
+#include "transport_sniffer.h"
 
 using namespace std::literals::chrono_literals;
 
@@ -74,7 +76,13 @@
     return 0;
 }
 
+bool FastBootTest::IsFastbootOverTcp() {
+    return android::base::StartsWith(device_serial, "tcp:");
+}
+
 bool FastBootTest::UsbStillAvailible() {
+    if (IsFastbootOverTcp()) return true;
+
     // For some reason someone decided to prefix the path with "usb:"
     std::string prefix("usb:");
     if (std::equal(prefix.begin(), prefix.end(), device_path.begin())) {
@@ -113,15 +121,19 @@
         ASSERT_TRUE(UsbStillAvailible());  // The device disconnected
     }
 
-    const auto matcher = [](usb_ifc_info* info) -> int {
-        return MatchFastboot(info, device_serial);
-    };
-    for (int i = 0; i < MAX_USB_TRIES && !transport; i++) {
-        std::unique_ptr<UsbTransport> usb(usb_open(matcher, USB_TIMEOUT));
-        if (usb)
-            transport = std::unique_ptr<UsbTransportSniffer>(
-                    new UsbTransportSniffer(std::move(usb), serial_port));
-        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    if (IsFastbootOverTcp()) {
+        ConnectTcpFastbootDevice();
+    } else {
+        const auto matcher = [](usb_ifc_info* info) -> int {
+            return MatchFastboot(info, device_serial);
+        };
+        for (int i = 0; i < MAX_USB_TRIES && !transport; i++) {
+            std::unique_ptr<UsbTransport> usb(usb_open(matcher, USB_TIMEOUT));
+            if (usb)
+                transport = std::unique_ptr<TransportSniffer>(
+                        new TransportSniffer(std::move(usb), serial_port));
+            std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        }
     }
 
     ASSERT_TRUE(transport);  // no nullptr
@@ -154,6 +166,8 @@
 
 // TODO, this should eventually be piped to a file instead of stdout
 void FastBootTest::TearDownSerial() {
+    if (IsFastbootOverTcp()) return;
+
     if (!transport) return;
     // One last read from serial
     transport->ProcessSerial();
@@ -167,9 +181,29 @@
     }
 }
 
+void FastBootTest::ConnectTcpFastbootDevice() {
+    for (int i = 0; i < MAX_TCP_TRIES && !transport; i++) {
+        std::string error;
+        std::unique_ptr<Transport> tcp(
+                tcp::Connect(device_serial.substr(4), tcp::kDefaultPort, &error).release());
+        if (tcp)
+            transport = std::unique_ptr<TransportSniffer>(new TransportSniffer(std::move(tcp), 0));
+        if (transport != nullptr) break;
+        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+}
+
 void FastBootTest::ReconnectFastbootDevice() {
     fb.reset();
     transport.reset();
+
+    if (IsFastbootOverTcp()) {
+        ConnectTcpFastbootDevice();
+        device_path = cb_scratch;
+        fb = std::unique_ptr<FastBootDriver>(new FastBootDriver(transport.get(), {}, true));
+        return;
+    }
+
     while (UsbStillAvailible())
         ;
     printf("WAITING FOR DEVICE\n");
@@ -180,8 +214,8 @@
     while (!transport) {
         std::unique_ptr<UsbTransport> usb(usb_open(matcher, USB_TIMEOUT));
         if (usb) {
-            transport = std::unique_ptr<UsbTransportSniffer>(
-                    new UsbTransportSniffer(std::move(usb), serial_port));
+            transport = std::unique_ptr<TransportSniffer>(
+                    new TransportSniffer(std::move(usb), serial_port));
         }
         std::this_thread::sleep_for(1s);
     }
diff --git a/fastboot/fuzzy_fastboot/fixtures.h b/fastboot/fuzzy_fastboot/fixtures.h
index c71c897..2468868 100644
--- a/fastboot/fuzzy_fastboot/fixtures.h
+++ b/fastboot/fuzzy_fastboot/fixtures.h
@@ -31,7 +31,7 @@
 #include "fastboot_driver.h"
 
 #include "extensions.h"
-#include "usb_transport_sniffer.h"
+#include "transport_sniffer.h"
 
 namespace fastboot {
 
@@ -45,11 +45,14 @@
     static int serial_port;
     static std::string device_serial;
     static constexpr int MAX_USB_TRIES = 10;
+    static constexpr int MAX_TCP_TRIES = 6000;
 
     static int MatchFastboot(usb_ifc_info* info, const std::string& local_serial = "");
+    static bool IsFastbootOverTcp();
     bool UsbStillAvailible();
     bool UserSpaceFastboot();
     void ReconnectFastbootDevice();
+    void ConnectTcpFastbootDevice();
 
   protected:
     RetCode DownloadCommand(uint32_t size, std::string* response = nullptr,
@@ -64,7 +67,7 @@
     void TearDownSerial();
     void SetLockState(bool unlock, bool assert_change = true);
 
-    std::unique_ptr<UsbTransportSniffer> transport;
+    std::unique_ptr<TransportSniffer> transport;
     std::unique_ptr<FastBootDriver> fb;
 
   private:
diff --git a/fastboot/fuzzy_fastboot/main.cpp b/fastboot/fuzzy_fastboot/main.cpp
index a1d69d2..e7f785b 100644
--- a/fastboot/fuzzy_fastboot/main.cpp
+++ b/fastboot/fuzzy_fastboot/main.cpp
@@ -54,7 +54,7 @@
 #include "extensions.h"
 #include "fixtures.h"
 #include "test_utils.h"
-#include "usb_transport_sniffer.h"
+#include "transport_sniffer.h"
 
 namespace fastboot {
 
@@ -227,13 +227,6 @@
 
 TEST_F(LogicalPartitionCompliance, FastbootRebootTest) {
     ASSERT_TRUE(UserSpaceFastboot());
-    GTEST_LOG_(INFO) << "Rebooting to bootloader mode";
-    // Test 'fastboot reboot bootloader' from fastbootd
-    fb->RebootTo("bootloader");
-
-    // Test fastboot reboot fastboot from bootloader
-    ReconnectFastbootDevice();
-    ASSERT_FALSE(UserSpaceFastboot());
     GTEST_LOG_(INFO) << "Rebooting back to fastbootd mode";
     fb->RebootTo("fastboot");
 
@@ -268,20 +261,7 @@
     GTEST_LOG_(INFO) << "Flashing a logical partition..";
     EXPECT_EQ(fb->FlashPartition(test_partition_name, buf), SUCCESS)
             << "flash logical -partition failed";
-    GTEST_LOG_(INFO) << "Rebooting to bootloader mode";
-    // Reboot to bootloader mode and attempt to flash the logical partitions
-    fb->RebootTo("bootloader");
 
-    ReconnectFastbootDevice();
-    ASSERT_FALSE(UserSpaceFastboot());
-    GTEST_LOG_(INFO) << "Attempt to flash a logical partition..";
-    EXPECT_EQ(fb->FlashPartition(test_partition_name, buf), DEVICE_FAIL)
-            << "flash logical partition must fail in bootloader";
-    GTEST_LOG_(INFO) << "Rebooting back to fastbootd mode";
-    fb->RebootTo("fastboot");
-
-    ReconnectFastbootDevice();
-    ASSERT_TRUE(UserSpaceFastboot());
     GTEST_LOG_(INFO) << "Testing 'fastboot delete-logical-partition' command";
     EXPECT_EQ(fb->DeletePartition(test_partition_name), SUCCESS)
             << "delete logical-partition failed";
@@ -1756,16 +1736,19 @@
     }
 
     setbuf(stdout, NULL);  // no buffering
-    printf("<Waiting for Device>\n");
-    const auto matcher = [](usb_ifc_info* info) -> int {
-        return fastboot::FastBootTest::MatchFastboot(info, fastboot::FastBootTest::device_serial);
-    };
-    Transport* transport = nullptr;
-    while (!transport) {
-        transport = usb_open(matcher);
-        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+
+    if (!fastboot::FastBootTest::IsFastbootOverTcp()) {
+        printf("<Waiting for Device>\n");
+        const auto matcher = [](usb_ifc_info* info) -> int {
+            return fastboot::FastBootTest::MatchFastboot(info, fastboot::FastBootTest::device_serial);
+        };
+        Transport* transport = nullptr;
+        while (!transport) {
+            transport = usb_open(matcher);
+            std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        }
+        transport->Close();
     }
-    transport->Close();
 
     if (args.find("serial_port") != args.end()) {
         fastboot::FastBootTest::serial_port = fastboot::ConfigureSerial(args.at("serial_port"));
diff --git a/fastboot/fuzzy_fastboot/transport_sniffer.cpp b/fastboot/fuzzy_fastboot/transport_sniffer.cpp
new file mode 100644
index 0000000..b55ffd3
--- /dev/null
+++ b/fastboot/fuzzy_fastboot/transport_sniffer.cpp
@@ -0,0 +1,193 @@
+#include "transport_sniffer.h"
+#include <android-base/stringprintf.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <iomanip>
+#include <sstream>
+
+namespace fastboot {
+
+TransportSniffer::TransportSniffer(std::unique_ptr<Transport> transport,
+                                         const int serial_fd)
+    : transport_(std::move(transport)), serial_fd_(serial_fd) {}
+
+TransportSniffer::~TransportSniffer() {
+    Close();
+}
+
+ssize_t TransportSniffer::Read(void* data, size_t len) {
+    ProcessSerial();
+
+    ssize_t ret = transport_->Read(data, len);
+    if (ret < 0) {
+        const char* err = strerror(errno);
+        std::vector<char> buf(err, err + strlen(err));
+        Event e(READ_ERROR, std::move(buf));
+        transfers_.push_back(e);
+        return ret;
+    }
+
+    char* cdata = static_cast<char*>(data);
+    std::vector<char> buf(cdata, cdata + ret);
+    Event e(READ, std::move(buf));
+    transfers_.push_back(e);
+
+    ProcessSerial();
+    return ret;
+}
+
+ssize_t TransportSniffer::Write(const void* data, size_t len) {
+    ProcessSerial();
+
+    size_t ret = transport_->Write(data, len);
+    if (ret != len) {
+        const char* err = strerror(errno);
+        std::vector<char> buf(err, err + strlen(err));
+        Event e(WRITE_ERROR, std::move(buf));
+        transfers_.push_back(e);
+        return ret;
+    }
+
+    const char* cdata = static_cast<const char*>(data);
+    std::vector<char> buf(cdata, cdata + len);
+    Event e(WRITE, std::move(buf));
+    transfers_.push_back(e);
+
+    ProcessSerial();
+    return ret;
+}
+
+int TransportSniffer::Close() {
+    return transport_->Close();
+}
+
+int TransportSniffer::Reset() {
+    ProcessSerial();
+    int ret = transport_->Reset();
+    std::vector<char> buf;
+    Event e(RESET, std::move(buf));
+    transfers_.push_back(e);
+    ProcessSerial();
+    return ret;
+}
+
+const std::vector<TransportSniffer::Event> TransportSniffer::Transfers() {
+    return transfers_;
+}
+
+/*
+ * When a test fails, we want a human readable log of everything going on up until
+ * the failure. This method will look through its log of captured events, and
+ * create a clean printable string of everything that happened.
+ */
+std::string TransportSniffer::CreateTrace() {
+    std::string ret;
+
+    const auto no_print = [](char c) -> bool { return !isprint(c); };
+    // This lambda creates a humand readable representation of a byte buffer
+    // It first attempts to figure out whether it should be interpreted as an ASCII buffer,
+    // and be printed as a string, or just a raw byte-buffer
+    const auto msg = [&ret, no_print](const std::vector<char>& buf) {
+        ret += android::base::StringPrintf("(%lu bytes): ", buf.size());
+        std::vector<const char>::iterator iter = buf.end();
+        const unsigned max_chars = 50;
+        if (buf.size() > max_chars) {
+            iter = buf.begin() + max_chars;
+        }
+        ret += '"';
+        if (std::count_if(buf.begin(), iter, no_print) == 0) {  // print as ascii
+            ret.insert(ret.end(), buf.begin(), iter);
+        } else {  // print as hex
+            std::stringstream ss;
+            for (auto c = buf.begin(); c < iter; c++) {
+                ss << std::hex << std::setw(2) << std::setfill('0')
+                   << static_cast<uint16_t>(static_cast<uint8_t>(*c));
+                ss << ',';
+            }
+            ret += ss.str();
+        }
+        if (buf.size() > max_chars) {
+            ret += android::base::StringPrintf("...\"(+%lu bytes)\n", buf.size() - max_chars);
+        } else {
+            ret += "\"\n";
+        }
+    };
+
+    // Now we just scan through the log of everything that happened and create a
+    // printable string for each one
+    for (const auto& event : transfers_) {
+        const std::vector<char>& cbuf = event.buf;
+        const std::string tmp(cbuf.begin(), cbuf.end());
+        auto start = transfers_.front().start;
+        auto durr = event.start - start;
+        auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(durr).count();
+
+        switch (event.type) {
+            case READ:
+                ret += android::base::StringPrintf("[READ %lldms]", millis);
+                msg(cbuf);
+                break;
+
+            case WRITE:
+                ret += android::base::StringPrintf("[WRITE %lldms]", millis);
+                msg(cbuf);
+                break;
+
+            case RESET:
+                ret += android::base::StringPrintf("[RESET %lldms]\n", millis);
+                break;
+
+            case READ_ERROR:
+                ret += android::base::StringPrintf("[READ_ERROR %lldms] %s\n", millis, tmp.c_str());
+                break;
+
+            case WRITE_ERROR:
+                ret += android::base::StringPrintf("[WRITE_ERROR %lldms] %s\n", millis,
+                                                   tmp.c_str());
+                break;
+
+            case SERIAL:
+                ret += android::base::StringPrintf("[SERIAL %lldms] %s", millis, tmp.c_str());
+                if (ret.back() != '\n') ret += '\n';
+                break;
+        }
+    }
+    return ret;
+}
+
+// This is a quick call to flush any UART logs the device might have sent
+// to our internal event log. It will wait up to 10ms for data to appear
+void TransportSniffer::ProcessSerial() {
+    if (serial_fd_ <= 0) return;
+
+    fd_set set;
+    struct timeval timeout;
+
+    FD_ZERO(&set);
+    FD_SET(serial_fd_, &set);
+    timeout.tv_sec = 0;
+    timeout.tv_usec = 10000;  // 10ms
+
+    int count = 0;
+    int n = 0;
+    std::vector<char> buf;
+    buf.resize(1000);
+    while (select(serial_fd_ + 1, &set, NULL, NULL, &timeout) > 0) {
+        n = read(serial_fd_, buf.data() + count, buf.size() - count);
+        if (n > 0) {
+            count += n;
+        } else {
+            break;
+        }
+    }
+
+    buf.resize(count);
+
+    if (count > 0) {
+        Event e(SERIAL, std::move(buf));
+        transfers_.push_back(e);
+    }
+}
+
+}  // namespace fastboot
diff --git a/fastboot/fuzzy_fastboot/transport_sniffer.h b/fastboot/fuzzy_fastboot/transport_sniffer.h
new file mode 100644
index 0000000..2cbb9fe
--- /dev/null
+++ b/fastboot/fuzzy_fastboot/transport_sniffer.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#pragma once
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <chrono>
+#include <cstdlib>
+#include <fstream>
+#include <string>
+#include <vector>
+
+#include "usb.h"
+
+namespace fastboot {
+
+/* A special class for sniffing reads and writes
+ *
+ * A useful debugging tool is to see the raw fastboot transactions going between
+ * the host and device. This class is a special subclass of Transport that snoops and saves
+ * all the transactions going on. Additionally, if there is a console serial port
+ * from the device, this class can monitor it as well and capture the interleaving of
+ * transport transactions and UART log messages.
+ */
+class TransportSniffer : public Transport {
+  public:
+    enum EventType {
+        READ,
+        WRITE,
+        RESET,
+        SERIAL,  // Serial log message from device
+        READ_ERROR,
+        WRITE_ERROR,
+    };
+
+    struct Event {
+        Event(EventType t, const std::vector<char> cbuf) : type(t), buf(cbuf) {
+            start = std::chrono::high_resolution_clock::now();
+        };
+        EventType type;
+        std::chrono::high_resolution_clock::time_point start;
+        const std::vector<char> buf;
+    };
+
+    TransportSniffer(std::unique_ptr<Transport> transport, const int serial_fd = 0);
+    ~TransportSniffer() override;
+
+    virtual ssize_t Read(void* data, size_t len) override;
+    virtual ssize_t Write(const void* data, size_t len) override;
+    virtual int Close() override final;  // note usage in destructor
+    virtual int Reset() override;
+
+    const std::vector<Event> Transfers();
+    std::string CreateTrace();
+    void ProcessSerial();
+
+  private:
+    std::vector<Event> transfers_;
+    std::unique_ptr<Transport> transport_;
+    const int serial_fd_;
+};
+
+}  // End namespace fastboot
diff --git a/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp b/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp
deleted file mode 100644
index 7c595f4..0000000
--- a/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp
+++ /dev/null
@@ -1,193 +0,0 @@
-#include "usb_transport_sniffer.h"
-#include <android-base/stringprintf.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <iomanip>
-#include <sstream>
-
-namespace fastboot {
-
-UsbTransportSniffer::UsbTransportSniffer(std::unique_ptr<UsbTransport> transport,
-                                         const int serial_fd)
-    : transport_(std::move(transport)), serial_fd_(serial_fd) {}
-
-UsbTransportSniffer::~UsbTransportSniffer() {
-    Close();
-}
-
-ssize_t UsbTransportSniffer::Read(void* data, size_t len) {
-    ProcessSerial();
-
-    ssize_t ret = transport_->Read(data, len);
-    if (ret < 0) {
-        const char* err = strerror(errno);
-        std::vector<char> buf(err, err + strlen(err));
-        Event e(READ_ERROR, std::move(buf));
-        transfers_.push_back(e);
-        return ret;
-    }
-
-    char* cdata = static_cast<char*>(data);
-    std::vector<char> buf(cdata, cdata + ret);
-    Event e(READ, std::move(buf));
-    transfers_.push_back(e);
-
-    ProcessSerial();
-    return ret;
-}
-
-ssize_t UsbTransportSniffer::Write(const void* data, size_t len) {
-    ProcessSerial();
-
-    size_t ret = transport_->Write(data, len);
-    if (ret != len) {
-        const char* err = strerror(errno);
-        std::vector<char> buf(err, err + strlen(err));
-        Event e(WRITE_ERROR, std::move(buf));
-        transfers_.push_back(e);
-        return ret;
-    }
-
-    const char* cdata = static_cast<const char*>(data);
-    std::vector<char> buf(cdata, cdata + len);
-    Event e(WRITE, std::move(buf));
-    transfers_.push_back(e);
-
-    ProcessSerial();
-    return ret;
-}
-
-int UsbTransportSniffer::Close() {
-    return transport_->Close();
-}
-
-int UsbTransportSniffer::Reset() {
-    ProcessSerial();
-    int ret = transport_->Reset();
-    std::vector<char> buf;
-    Event e(RESET, std::move(buf));
-    transfers_.push_back(e);
-    ProcessSerial();
-    return ret;
-}
-
-const std::vector<UsbTransportSniffer::Event> UsbTransportSniffer::Transfers() {
-    return transfers_;
-}
-
-/*
- * When a test fails, we want a human readable log of everything going on up until
- * the failure. This method will look through its log of captured events, and
- * create a clean printable string of everything that happened.
- */
-std::string UsbTransportSniffer::CreateTrace() {
-    std::string ret;
-
-    const auto no_print = [](char c) -> bool { return !isprint(c); };
-    // This lambda creates a humand readable representation of a byte buffer
-    // It first attempts to figure out whether it should be interpreted as an ASCII buffer,
-    // and be printed as a string, or just a raw byte-buffer
-    const auto msg = [&ret, no_print](const std::vector<char>& buf) {
-        ret += android::base::StringPrintf("(%lu bytes): ", buf.size());
-        std::vector<const char>::iterator iter = buf.end();
-        const unsigned max_chars = 50;
-        if (buf.size() > max_chars) {
-            iter = buf.begin() + max_chars;
-        }
-        ret += '"';
-        if (std::count_if(buf.begin(), iter, no_print) == 0) {  // print as ascii
-            ret.insert(ret.end(), buf.begin(), iter);
-        } else {  // print as hex
-            std::stringstream ss;
-            for (auto c = buf.begin(); c < iter; c++) {
-                ss << std::hex << std::setw(2) << std::setfill('0')
-                   << static_cast<uint16_t>(static_cast<uint8_t>(*c));
-                ss << ',';
-            }
-            ret += ss.str();
-        }
-        if (buf.size() > max_chars) {
-            ret += android::base::StringPrintf("...\"(+%lu bytes)\n", buf.size() - max_chars);
-        } else {
-            ret += "\"\n";
-        }
-    };
-
-    // Now we just scan through the log of everything that happened and create a
-    // printable string for each one
-    for (const auto& event : transfers_) {
-        const std::vector<char>& cbuf = event.buf;
-        const std::string tmp(cbuf.begin(), cbuf.end());
-        auto start = transfers_.front().start;
-        auto durr = event.start - start;
-        auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(durr).count();
-
-        switch (event.type) {
-            case READ:
-                ret += android::base::StringPrintf("[READ %lldms]", millis);
-                msg(cbuf);
-                break;
-
-            case WRITE:
-                ret += android::base::StringPrintf("[WRITE %lldms]", millis);
-                msg(cbuf);
-                break;
-
-            case RESET:
-                ret += android::base::StringPrintf("[RESET %lldms]\n", millis);
-                break;
-
-            case READ_ERROR:
-                ret += android::base::StringPrintf("[READ_ERROR %lldms] %s\n", millis, tmp.c_str());
-                break;
-
-            case WRITE_ERROR:
-                ret += android::base::StringPrintf("[WRITE_ERROR %lldms] %s\n", millis,
-                                                   tmp.c_str());
-                break;
-
-            case SERIAL:
-                ret += android::base::StringPrintf("[SERIAL %lldms] %s", millis, tmp.c_str());
-                if (ret.back() != '\n') ret += '\n';
-                break;
-        }
-    }
-    return ret;
-}
-
-// This is a quick call to flush any UART logs the device might have sent
-// to our internal event log. It will wait up to 10ms for data to appear
-void UsbTransportSniffer::ProcessSerial() {
-    if (serial_fd_ <= 0) return;
-
-    fd_set set;
-    struct timeval timeout;
-
-    FD_ZERO(&set);
-    FD_SET(serial_fd_, &set);
-    timeout.tv_sec = 0;
-    timeout.tv_usec = 10000;  // 10ms
-
-    int count = 0;
-    int n = 0;
-    std::vector<char> buf;
-    buf.resize(1000);
-    while (select(serial_fd_ + 1, &set, NULL, NULL, &timeout) > 0) {
-        n = read(serial_fd_, buf.data() + count, buf.size() - count);
-        if (n > 0) {
-            count += n;
-        } else {
-            break;
-        }
-    }
-
-    buf.resize(count);
-
-    if (count > 0) {
-        Event e(SERIAL, std::move(buf));
-        transfers_.push_back(e);
-    }
-}
-
-}  // namespace fastboot
diff --git a/fastboot/fuzzy_fastboot/usb_transport_sniffer.h b/fastboot/fuzzy_fastboot/usb_transport_sniffer.h
deleted file mode 100644
index 8119aea..0000000
--- a/fastboot/fuzzy_fastboot/usb_transport_sniffer.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#pragma once
-
-#include <sys/types.h>
-#include <unistd.h>
-#include <chrono>
-#include <cstdlib>
-#include <fstream>
-#include <string>
-#include <vector>
-
-#include "usb.h"
-
-namespace fastboot {
-
-/* A special class for sniffing reads and writes
- *
- * A useful debugging tool is to see the raw fastboot transactions going between
- * the host and device. This class wraps the UsbTransport class, and snoops and saves
- * all the transactions going on. Additionally, if there is a console serial port
- * from the device, this class can monitor it as well and capture the interleaving of
- * transport transactions and UART log messages.
- */
-class UsbTransportSniffer : public UsbTransport {
-  public:
-    enum EventType {
-        READ,
-        WRITE,
-        RESET,
-        SERIAL,  // Serial log message from device
-        READ_ERROR,
-        WRITE_ERROR,
-    };
-
-    struct Event {
-        Event(EventType t, const std::vector<char> cbuf) : type(t), buf(cbuf) {
-            start = std::chrono::high_resolution_clock::now();
-        };
-        EventType type;
-        std::chrono::high_resolution_clock::time_point start;
-        const std::vector<char> buf;
-    };
-
-    UsbTransportSniffer(std::unique_ptr<UsbTransport> transport, const int serial_fd = 0);
-    ~UsbTransportSniffer() override;
-
-    virtual ssize_t Read(void* data, size_t len) override;
-    virtual ssize_t Write(const void* data, size_t len) override;
-    virtual int Close() override final;  // note usage in destructor
-    virtual int Reset() override;
-
-    const std::vector<Event> Transfers();
-    std::string CreateTrace();
-    void ProcessSerial();
-
-  private:
-    std::vector<Event> transfers_;
-    std::unique_ptr<UsbTransport> transport_;
-    const int serial_fd_;
-};
-
-}  // End namespace fastboot
diff --git a/fastboot/socket.cpp b/fastboot/socket.cpp
index e56ffcf..5a14b63 100644
--- a/fastboot/socket.cpp
+++ b/fastboot/socket.cpp
@@ -54,7 +54,9 @@
     while (total < length) {
         ssize_t bytes = Receive(reinterpret_cast<char*>(data) + total, length - total, timeout_ms);
 
-        if (bytes == -1) {
+        // Returns 0 only when the peer has disconnected because our requested length is not 0. So
+        // we return immediately to avoid dead loop here.
+        if (bytes <= 0) {
             if (total == 0) {
                 return -1;
             }
diff --git a/fastboot/tcp.cpp b/fastboot/tcp.cpp
index dd6fbf8..dca306f 100644
--- a/fastboot/tcp.cpp
+++ b/fastboot/tcp.cpp
@@ -64,6 +64,7 @@
     ssize_t Read(void* data, size_t length) override;
     ssize_t Write(const void* data, size_t length) override;
     int Close() override;
+    int Reset() override;
 
   private:
     explicit TcpTransport(std::unique_ptr<Socket> sock) : socket_(std::move(sock)) {}
@@ -178,6 +179,10 @@
     return result;
 }
 
+int TcpTransport::Reset() {
+    return 0;
+}
+
 std::unique_ptr<Transport> Connect(const std::string& hostname, int port, std::string* error) {
     return internal::Connect(Socket::NewClient(Socket::Protocol::kTcp, hostname, port, error),
                              error);
diff --git a/fastboot/transport.h b/fastboot/transport.h
index 96b90d2..de0cc92 100644
--- a/fastboot/transport.h
+++ b/fastboot/transport.h
@@ -36,6 +36,8 @@
     // Closes the underlying transport. Returns 0 on success.
     virtual int Close() = 0;
 
+    virtual int Reset() = 0;
+
     // Blocks until the transport disconnects. Transports that don't support
     // this will return immediately. Returns 0 on success.
     virtual int WaitForDisconnect() { return 0; }
diff --git a/fastboot/udp.cpp b/fastboot/udp.cpp
index 53fb347..308c96c 100644
--- a/fastboot/udp.cpp
+++ b/fastboot/udp.cpp
@@ -109,6 +109,7 @@
     ssize_t Read(void* data, size_t length) override;
     ssize_t Write(const void* data, size_t length) override;
     int Close() override;
+    int Reset() override;
 
   private:
     explicit UdpTransport(std::unique_ptr<Socket> socket) : socket_(std::move(socket)) {}
@@ -370,6 +371,10 @@
     return result;
 }
 
+int UdpTransport::Reset() {
+    return 0;
+}
+
 std::unique_ptr<Transport> Connect(const std::string& hostname, int port, std::string* error) {
     return internal::Connect(Socket::NewClient(Socket::Protocol::kUdp, hostname, port, error),
                              error);
diff --git a/fastboot/usb_osx.cpp b/fastboot/usb_osx.cpp
index f597f50..8a3c213 100644
--- a/fastboot/usb_osx.cpp
+++ b/fastboot/usb_osx.cpp
@@ -106,7 +106,7 @@
     kr = (*dev)->CreateInterfaceIterator(dev, &request, &iterator);
 
     if (kr != 0) {
-        ERR("Couldn't create a device interface iterator: (%08x)\n", kr);
+        WARN("Couldn't create a device interface iterator: (%08x)\n", kr);
         return -1;
     }
 
diff --git a/fastboot/usb_windows.cpp b/fastboot/usb_windows.cpp
index b00edb3..bf840f8 100644
--- a/fastboot/usb_windows.cpp
+++ b/fastboot/usb_windows.cpp
@@ -195,25 +195,28 @@
 ssize_t WindowsUsbTransport::Read(void* data, size_t len) {
     unsigned long time_out = 0;
     unsigned long read = 0;
+    size_t count = 0;
     int ret;
 
     DBG("usb_read %zu\n", len);
     if (nullptr != handle_) {
-        while (1) {
-            int xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len;
+        while (len > 0) {
+            size_t xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len;
 
             ret = AdbReadEndpointSync(handle_->adb_read_pipe, data, xfer, &read, time_out);
             errno = GetLastError();
-            DBG("usb_read got: %ld, expected: %d, errno: %d\n", read, xfer, errno);
-            if (ret) {
-                return read;
-            } else {
+            DBG("usb_read got: %lu, expected: %zu, errno: %d\n", read, xfer, errno);
+            if (ret == 0) {
                 // assume ERROR_INVALID_HANDLE indicates we are disconnected
                 if (errno == ERROR_INVALID_HANDLE)
                     usb_kick(handle_.get());
                 break;
             }
-            // else we timed out - try again
+            count += read;
+            len -= read;
+            data = (char*)data + read;
+
+            if (xfer != read || len == 0) return count;
         }
     } else {
         DBG("usb_read NULL handle\n");
diff --git a/fastboot/util.cpp b/fastboot/util.cpp
index d02b37f..900d6ea 100644
--- a/fastboot/util.cpp
+++ b/fastboot/util.cpp
@@ -53,6 +53,10 @@
     exit(EXIT_FAILURE);
 }
 
+void die(const std::string& str) {
+    die("%s", str.c_str());
+}
+
 void set_verbose() {
     g_verbose = true;
 }
diff --git a/fastboot/util.h b/fastboot/util.h
index 2535414..c719df2 100644
--- a/fastboot/util.h
+++ b/fastboot/util.h
@@ -15,4 +15,7 @@
 // use the same attribute for compile-time format string checking.
 void die(const char* fmt, ...) __attribute__((__noreturn__))
 __attribute__((__format__(__printf__, 1, 2)));
+
 void verbose(const char* fmt, ...) __attribute__((__format__(__printf__, 1, 2)));
+
+void die(const std::string& str) __attribute__((__noreturn__));
diff --git a/fs_mgr/Android.bp b/fs_mgr/Android.bp
index 4ee9624..ac784b2 100644
--- a/fs_mgr/Android.bp
+++ b/fs_mgr/Android.bp
@@ -26,15 +26,16 @@
     ],
 }
 
-cc_library {
-    // Do not ever allow this library to be vendor_available as a shared library.
-    // It does not have a stable interface.
-    name: "libfs_mgr",
+cc_defaults {
+    name: "libfs_mgr_defaults",
     defaults: ["fs_mgr_defaults"],
-    recovery_available: true,
     export_include_dirs: ["include"],
     include_dirs: ["system/vold"],
+    cflags: [
+        "-D_FILE_OFFSET_BITS=64",
+    ],
     srcs: [
+        "file_wait.cpp",
         "fs_mgr.cpp",
         "fs_mgr_format.cpp",
         "fs_mgr_verity.cpp",
@@ -42,6 +43,7 @@
         "fs_mgr_overlayfs.cpp",
         "fs_mgr_roots.cpp",
         "fs_mgr_vendor_overlay.cpp",
+        ":libfiemap_srcs",
     ],
     shared_libs: [
         "libbase",
@@ -72,6 +74,8 @@
     whole_static_libs: [
         "liblogwrap",
         "libdm",
+        "libext2_uuid",
+        "libfscrypt",
         "libfstab",
     ],
     cppflags: [
@@ -85,6 +89,47 @@
             ],
         },
     },
+    header_libs: [
+        "libfiemap_headers",
+        "libstorage_literals_headers",
+    ],
+    export_header_lib_headers: [
+        "libfiemap_headers",
+    ],
+    required: [
+        "e2freefrag",
+        "e2fsdroid",
+    ],
+}
+
+// Two variants of libfs_mgr are provided: libfs_mgr and libfs_mgr_binder.
+// Use libfs_mgr in recovery, first-stage-init, or when libfiemap or overlayfs
+// is not used.
+//
+// Use libfs_mgr_binder when not in recovery/first-stage init, or when overlayfs
+// or libfiemap is needed. In this case, libfiemap will proxy over binder to
+// gsid.
+cc_library {
+    // Do not ever allow this library to be vendor_available as a shared library.
+    // It does not have a stable interface.
+    name: "libfs_mgr",
+    recovery_available: true,
+    defaults: [
+        "libfs_mgr_defaults",
+    ],
+    srcs: [
+        ":libfiemap_passthrough_srcs",
+    ],
+}
+
+cc_library {
+    // Do not ever allow this library to be vendor_available as a shared library.
+    // It does not have a stable interface.
+    name: "libfs_mgr_binder",
+    defaults: [
+        "libfs_mgr_defaults",
+        "libfiemap_binder_defaults",
+    ],
 }
 
 cc_library_static {
@@ -104,6 +149,14 @@
         darwin: {
             enabled: false,
         },
+        vendor: {
+            cflags: [
+                // Skipping entries in fstab should only be done in a system
+                // process as the config file is in /system_ext.
+                // Remove the op from the vendor variant.
+                "-DNO_SKIP_MOUNT",
+            ],
+        },
     },
     export_include_dirs: ["include_fstab"],
     header_libs: [
@@ -117,13 +170,21 @@
     defaults: ["fs_mgr_defaults"],
     static_libs: [
         "libavb_user",
+        "libutils",
+        "libvold_binder",
     ],
     shared_libs: [
         "libbootloader_message",
         "libbase",
+        "libbinder",
+        "libcutils",
         "libcrypto",
+        "libext4_utils",
         "libfec",
-        "libfs_mgr",
+        "libfs_mgr_binder",
+        "liblog",
+        "liblp",
+        "libselinux",
     ],
     header_libs: [
         "libcutils_headers",
@@ -142,4 +203,26 @@
             ],
         },
     },
+    required: [
+        "clean_scratch_files",
+    ],
+}
+
+cc_binary {
+    name: "clean_scratch_files",
+    defaults: ["fs_mgr_defaults"],
+    shared_libs: [
+        "libbase",
+        "libfs_mgr_binder",
+    ],
+    srcs: [
+        "clean_scratch_files.cpp",
+    ],
+    product_variables: {
+        debuggable: {
+            init_rc: [
+                "clean_scratch_files.rc",
+            ],
+        },
+    },
 }
diff --git a/fs_mgr/README.overlayfs.md b/fs_mgr/README.overlayfs.md
index f89e598..f579078 100644
--- a/fs_mgr/README.overlayfs.md
+++ b/fs_mgr/README.overlayfs.md
@@ -1,33 +1,27 @@
-Android Overlayfs integration with adb remount
+Android OverlayFS Integration with adb Remount
 ==============================================
 
 Introduction
 ------------
 
-Users working with userdebug or eng builds expect to be able to
-remount the system partition as read-write and then add or modify
-any number of files without reflashing the system image, which is
-understandably efficient for a development cycle.
-Limited memory systems that chose to use readonly filesystems like
-*squashfs*, or *Logical Resizable Android Partitions* which land
-system partition images right-sized, and with filesystem that have
-been deduped on the block level to compress the content; means that
-either a remount is not possible directly, or when done offers
-little or no utility because of remaining space limitations or
-support logistics.
+Users working with userdebug or eng builds expect to be able to remount the
+system partition as read-write and then add or modify any number of files
+without reflashing the system image, which is efficient for a development cycle.
 
-*Overlayfs* comes to the rescue for these debug scenarios, and logic
-will _automatically_ setup backing storage for a writable filesystem
-as an upper reference, and mount overtop the lower.  These actions
-will be performed in the **adb disable-verity** and **adb remount**
-requests.
+Limited memory systems use read-only types of file systems or logical resizable
+Android partitions (LRAPs). These file systems land system partition images
+right-sized, and have been deduped at the block level to compress the content.
+This means that a remount either isn’t possible, or isn't useful because of
+space limitations or support logistics.
 
-Operations
-----------
+OverlayFS resolves these debug scenarios with the _adb disable-verity_ and
+_adb remount_ commands, which set up backing storage for a writable file
+system as an upper reference, and mount the lower reference on top.
 
-### Cookbook
+Performing a remount
+--------------------
 
-The typical action to utilize the remount facility is:
+Use the following sequence to perform the remount.
 
     $ adb root
     $ adb disable-verity
@@ -36,11 +30,11 @@
     $ adb root
     $ adb remount
 
-Followed by one of the following:
+Then enter one of the following sequences:
 
-    $ adb stop
+    $ adb shell stop
     $ adb sync
-    $ adb start
+    $ adb shell start
     $ adb reboot
 
 *or*
@@ -48,72 +42,87 @@
     $ adb push <source> <destination>
     $ adb reboot
 
-Note that the sequence above:
+Note that you can replace these two lines:
 
     $ adb disable-verity
     $ adb reboot
 
-*or*
-
-    $ adb remount
-
-can be replaced in both places with:
+with this line:
 
     $ adb remount -R
 
-which will not reboot if everything is already prepared and ready
-to go.
+**Note:** _adb reboot -R_ won’t reboot if the device is already in the adb remount state.
 
-None of this changes if *overlayfs* needs to be engaged.
-The decisions whether to use traditional direct filesystem remount,
-or one wrapped by *overlayfs* is automatically determined based on
-a probe of the filesystem types and space remaining.
+None of this changes if OverlayFS needs to be engaged.
+The decisions whether to use traditional direct file-system remount,
+or one wrapped by OverlayFS is automatically determined based on
+a probe of the file-system types and space remaining.
 
 ### Backing Storage
 
-When *overlayfs* logic is feasible, it will use either the
+When *OverlayFS* logic is feasible, it uses either the
 **/cache/overlay/** directory for non-A/B devices, or the
 **/mnt/scratch/overlay** directory for A/B devices that have
-access to *Logical Resizable Android Partitions*.
+access to *LRAP*.
+It is also possible for an A/B device to use the system_<other> partition
+for backing storage. eg: if booting off system_a+vendor_a, use system_b.
 The backing store is used as soon as possible in the boot
-process and can occur at first stage init, or at the
-mount_all init rc commands.
+process and can occur at first stage init, or when the
+*mount_all* commands are run in init RC scripts.
 
-This early as possible attachment of *overlayfs* means that
-*sepolicy* or *init* itself can also be pushed and used after
-the exec phases that accompany each stage.
+By attaching OverlayFS early, SEpolicy or init can be pushed and used after the exec phases of each stage.
 
 Caveats
 -------
 
-- Space used in the backing storage is on a file by file basis
-  and will require more space than if updated in place.  As such
-  it is important to be mindful of any wasted space, for instance
-  **BOARD_<partition>IMAGE_PARTITION_RESERVED_SIZE** being defined
-  will have a negative impact on the overall right-sizing of images
-  and thus free dynamic partition space.
-- Kernel must have CONFIG_OVERLAY_FS=y and will need to be patched
-  with "*overlayfs: override_creds=off option bypass creator_cred*"
-  if kernel is 4.4 or higher.
-  The patch is available on the upstream mailing list and the latest as of
-  Feb 8 2019 is https://lore.kernel.org/patchwork/patch/1009299/.
-  This patch adds an override_creds _mount_ option to overlayfs that
+- Backing storage requires more space than immutable storage, as backing is
+  done file by file. Be mindful of wasted space. For example, defining
+  **BOARD_IMAGE_PARTITION_RESERVED_SIZE** has a negative impact on the
+  right-sizing of images and requires more free dynamic partition space.
+- The kernel requires **CONFIG_OVERLAY_FS=y**. If the kernel version is higher
+  than 4.4, it requires source to be in line with android-common kernels. 
+  The patch series is available on the upstream mailing list and the latest as
+  of Sep 5 2019 is https://www.spinics.net/lists/linux-mtd/msg08331.html
+  This patch adds an override_creds _mount_ option to OverlayFS that
   permits legacy behavior for systems that do not have overlapping
   sepolicy rules, principals of least privilege, which is how Android behaves.
-- *adb enable-verity* will free up overlayfs and as a bonus the
-  device will be reverted pristine to before any content was updated.
-  Update engine does not take advantage of this, will perform a full OTA.
-- Update engine may not run if *fs_mgr_overlayfs_is_setup*() reports
-  true as adb remount overrides are incompatible with an OTA resources.
+  For 4.19 and higher a rework of the xattr handling to deal with recursion
+  is required. https://patchwork.kernel.org/patch/11117145/ is a start of that
+  adjustment.
+- _adb enable-verity_ frees up OverlayFS and reverts the device to the state
+  prior to content updates. The update engine performs a full OTA.
+- _adb remount_ overrides are incompatible with OTA resources, so the update
+  engine may not run if fs_mgr_overlayfs_is_setup() returns true.
+- If a dynamic partition runs out of space, making a logical partition larger
+  may fail because of the scratch partition. If this happens, clear the scratch
+  storage by running either either _fastboot flashall_ or _adb enable-verity_.
+  Then reinstate the overrides and continue.
 - For implementation simplicity on retrofit dynamic partition devices,
   take the whole alternate super (eg: if "*a*" slot, then the whole of
   "*system_b*").
   Since landing a filesystem on the alternate super physical device
   without differentiating if it is setup to support logical or physical,
   the alternate slot metadata and previous content will be lost.
-- If dynamic partitions runs out of space, resizing a logical
-  partition larger may fail because of the scratch partition.
-  If this happens, either fastboot flashall or adb enable-verity can
-  be used to clear scratch storage to permit the flash.
-  Then reinstate the overrides and continue.
+- There are other subtle caveats requiring complex logic to solve.
+  Have evaluated them as too complex or not worth the trouble, please
+  File a bug if a use case needs to be covered.
+  - The backing storage is treated fragile, if anything else has
+    issue with the space taken, the backing storage will be cleared
+    out and we reserve the right to not inform, if the layering
+    does not prevent any messaging.
+  - Space remaining threshold is hard coded.  If 1% or more space
+    still remains, OverlayFS will not be used, yet that amount of
+    space remaining is problematic.
+  - Flashing a partition via bootloader fastboot, as opposed to user
+    space fastbootd, is not detected, thus a partition may have
+    override content remaining.  adb enable-verity to wipe.
+  - Space is limited, there is near unlimited space on userdata,
+    we have made an architectural decision to not utilize
+    /data/overlay/ at this time.  Acquiring space to use for
+    backing remains an ongoing battle.
+  - First stage init, or ramdisk, can not be overriden.
+  - Backing storage will be discarded or ignored on errors, leading
+    to confusion.  When debugging using **adb remount** it is
+    currently advised to confirm update is present after a reboot
+    to develop confidence.
 - File bugs or submit fixes for review.
diff --git a/fs_mgr/TEST_MAPPING b/fs_mgr/TEST_MAPPING
new file mode 100644
index 0000000..676f446
--- /dev/null
+++ b/fs_mgr/TEST_MAPPING
@@ -0,0 +1,19 @@
+{
+  "presubmit": [
+    {
+      "name": "libdm_test"
+    },
+    {
+      "name": "liblp_test"
+    },
+    {
+      "name": "fiemap_image_test_presubmit"
+    },
+    {
+      "name": "fiemap_writer_test"
+    },
+    {
+      "name": "vts_libsnapshot_test"
+    }
+  ]
+}
diff --git a/fs_mgr/clean_scratch_files.cpp b/fs_mgr/clean_scratch_files.cpp
new file mode 100644
index 0000000..42fe35a
--- /dev/null
+++ b/fs_mgr/clean_scratch_files.cpp
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fs_mgr_overlayfs.h>
+
+int main() {
+    android::fs_mgr::CleanupOldScratchFiles();
+    return 0;
+}
diff --git a/fs_mgr/clean_scratch_files.rc b/fs_mgr/clean_scratch_files.rc
new file mode 100644
index 0000000..25a7e69
--- /dev/null
+++ b/fs_mgr/clean_scratch_files.rc
@@ -0,0 +1,2 @@
+on post-fs-data && property:ro.debuggable=1
+    exec_background - root root -- /system/bin/clean_scratch_files
diff --git a/fs_mgr/file_wait.cpp b/fs_mgr/file_wait.cpp
new file mode 100644
index 0000000..cbf6845
--- /dev/null
+++ b/fs_mgr/file_wait.cpp
@@ -0,0 +1,235 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <fs_mgr/file_wait.h>
+
+#include <limits.h>
+#if defined(__linux__)
+#include <poll.h>
+#include <sys/inotify.h>
+#endif
+#if defined(WIN32)
+#include <io.h>
+#else
+#include <unistd.h>
+#endif
+
+#include <functional>
+#include <thread>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+namespace android {
+namespace fs_mgr {
+
+using namespace std::literals;
+using android::base::unique_fd;
+
+bool PollForFile(const std::string& path, const std::chrono::milliseconds relative_timeout) {
+    auto start_time = std::chrono::steady_clock::now();
+
+    while (true) {
+        if (!access(path.c_str(), F_OK) || errno != ENOENT) return true;
+
+        std::this_thread::sleep_for(50ms);
+
+        auto now = std::chrono::steady_clock::now();
+        auto time_elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
+        if (time_elapsed > relative_timeout) return false;
+    }
+}
+
+bool PollForFileDeleted(const std::string& path, const std::chrono::milliseconds relative_timeout) {
+    auto start_time = std::chrono::steady_clock::now();
+
+    while (true) {
+        if (access(path.c_str(), F_OK) && errno == ENOENT) return true;
+
+        std::this_thread::sleep_for(50ms);
+
+        auto now = std::chrono::steady_clock::now();
+        auto time_elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
+        if (time_elapsed > relative_timeout) return false;
+    }
+}
+
+#if defined(__linux__)
+class OneShotInotify {
+  public:
+    OneShotInotify(const std::string& path, uint32_t mask,
+                   const std::chrono::milliseconds relative_timeout);
+
+    bool Wait();
+
+  private:
+    bool CheckCompleted();
+    int64_t RemainingMs() const;
+    bool ConsumeEvents();
+
+    enum class Result { Success, Timeout, Error };
+    Result WaitImpl();
+
+    unique_fd inotify_fd_;
+    std::string path_;
+    uint32_t mask_;
+    std::chrono::time_point<std::chrono::steady_clock> start_time_;
+    std::chrono::milliseconds relative_timeout_;
+    bool finished_;
+};
+
+OneShotInotify::OneShotInotify(const std::string& path, uint32_t mask,
+                               const std::chrono::milliseconds relative_timeout)
+    : path_(path),
+      mask_(mask),
+      start_time_(std::chrono::steady_clock::now()),
+      relative_timeout_(relative_timeout),
+      finished_(false) {
+    // If the condition is already met, don't bother creating an inotify.
+    if (CheckCompleted()) return;
+
+    unique_fd inotify_fd(inotify_init1(IN_CLOEXEC | IN_NONBLOCK));
+    if (inotify_fd < 0) {
+        PLOG(ERROR) << "inotify_init1 failed";
+        return;
+    }
+
+    std::string watch_path;
+    if (mask == IN_CREATE) {
+        watch_path = android::base::Dirname(path);
+    } else {
+        watch_path = path;
+    }
+    if (inotify_add_watch(inotify_fd, watch_path.c_str(), mask) < 0) {
+        PLOG(ERROR) << "inotify_add_watch failed";
+        return;
+    }
+
+    // It's possible the condition was met before the add_watch. Check for
+    // this and abort early if so.
+    if (CheckCompleted()) return;
+
+    inotify_fd_ = std::move(inotify_fd);
+}
+
+bool OneShotInotify::Wait() {
+    Result result = WaitImpl();
+    if (result == Result::Success) return true;
+    if (result == Result::Timeout) return false;
+
+    // Some kind of error with inotify occurred, so fallback to a poll.
+    std::chrono::milliseconds timeout(RemainingMs());
+    if (mask_ == IN_CREATE) {
+        return PollForFile(path_, timeout);
+    } else if (mask_ == IN_DELETE_SELF) {
+        return PollForFileDeleted(path_, timeout);
+    } else {
+        LOG(ERROR) << "Unknown inotify mask: " << mask_;
+        return false;
+    }
+}
+
+OneShotInotify::Result OneShotInotify::WaitImpl() {
+    // If the operation completed super early, we'll never have created an
+    // inotify instance.
+    if (finished_) return Result::Success;
+    if (inotify_fd_ < 0) return Result::Error;
+
+    while (true) {
+        auto remaining_ms = RemainingMs();
+        if (remaining_ms <= 0) return Result::Timeout;
+
+        struct pollfd event = {
+                .fd = inotify_fd_,
+                .events = POLLIN,
+                .revents = 0,
+        };
+        int rv = poll(&event, 1, static_cast<int>(remaining_ms));
+        if (rv <= 0) {
+            if (rv == 0 || errno == EINTR) {
+                continue;
+            }
+            PLOG(ERROR) << "poll for inotify failed";
+            return Result::Error;
+        }
+        if (event.revents & POLLERR) {
+            LOG(ERROR) << "error reading inotify for " << path_;
+            return Result::Error;
+        }
+
+        // Note that we don't bother checking what kind of event it is, since
+        // it's cheap enough to just see if the initial condition is satisified.
+        // If it's not, we consume all the events available and continue.
+        if (CheckCompleted()) return Result::Success;
+        if (!ConsumeEvents()) return Result::Error;
+    }
+}
+
+bool OneShotInotify::CheckCompleted() {
+    if (mask_ == IN_CREATE) {
+        finished_ = !access(path_.c_str(), F_OK) || errno != ENOENT;
+    } else if (mask_ == IN_DELETE_SELF) {
+        finished_ = access(path_.c_str(), F_OK) && errno == ENOENT;
+    } else {
+        LOG(ERROR) << "Unexpected mask: " << mask_;
+    }
+    return finished_;
+}
+
+bool OneShotInotify::ConsumeEvents() {
+    // According to the manpage, this is enough to read at least one event.
+    static constexpr size_t kBufferSize = sizeof(struct inotify_event) + NAME_MAX + 1;
+    char buffer[kBufferSize];
+
+    do {
+        ssize_t rv = TEMP_FAILURE_RETRY(read(inotify_fd_, buffer, sizeof(buffer)));
+        if (rv <= 0) {
+            if (rv == 0 || errno == EAGAIN) {
+                return true;
+            }
+            PLOG(ERROR) << "read inotify failed";
+            return false;
+        }
+    } while (true);
+}
+
+int64_t OneShotInotify::RemainingMs() const {
+    auto remaining = (std::chrono::steady_clock::now() - start_time_);
+    auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(remaining);
+    return (relative_timeout_ - elapsed).count();
+}
+#endif
+
+bool WaitForFile(const std::string& path, const std::chrono::milliseconds relative_timeout) {
+#if defined(__linux__)
+    OneShotInotify inotify(path, IN_CREATE, relative_timeout);
+    return inotify.Wait();
+#else
+    return PollForFile(path, relative_timeout);
+#endif
+}
+
+// Wait at most |relative_timeout| milliseconds for |path| to stop existing.
+bool WaitForFileDeleted(const std::string& path, const std::chrono::milliseconds relative_timeout) {
+#if defined(__linux__)
+    OneShotInotify inotify(path, IN_DELETE_SELF, relative_timeout);
+    return inotify.Wait();
+#else
+    return PollForFileDeleted(path, relative_timeout);
+#endif
+}
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index f753f54..9561471 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -34,6 +34,7 @@
 #include <time.h>
 #include <unistd.h>
 
+#include <chrono>
 #include <functional>
 #include <map>
 #include <memory>
@@ -42,6 +43,7 @@
 #include <utility>
 #include <vector>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
@@ -56,8 +58,11 @@
 #include <ext4_utils/ext4_utils.h>
 #include <ext4_utils/wipe.h>
 #include <fs_avb/fs_avb.h>
+#include <fs_mgr/file_wait.h>
 #include <fs_mgr_overlayfs.h>
+#include <fscrypt/fscrypt.h>
 #include <libdm/dm.h>
+#include <libdm/loop_control.h>
 #include <liblp/metadata_format.h>
 #include <linux/fs.h>
 #include <linux/loop.h>
@@ -74,6 +79,7 @@
 #define F2FS_FSCK_BIN   "/system/bin/fsck.f2fs"
 #define MKSWAP_BIN      "/system/bin/mkswap"
 #define TUNE2FS_BIN     "/system/bin/tune2fs"
+#define RESIZE2FS_BIN "/system/bin/resize2fs"
 
 #define FSCK_LOG_FILE   "/dev/fscklogs/log"
 
@@ -82,15 +88,25 @@
 #define ZRAM_BACK_DEV   "/sys/block/zram0/backing_dev"
 
 #define SYSFS_EXT4_VERITY "/sys/fs/ext4/features/verity"
+#define SYSFS_EXT4_CASEFOLD "/sys/fs/ext4/features/casefold"
+
+// FIXME: this should be in system/extras
+#define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
 
 using android::base::Basename;
+using android::base::GetBoolProperty;
+using android::base::GetUintProperty;
 using android::base::Realpath;
+using android::base::SetProperty;
 using android::base::StartsWith;
+using android::base::Timer;
 using android::base::unique_fd;
 using android::dm::DeviceMapper;
 using android::dm::DmDeviceState;
+using android::dm::DmTargetLinear;
+using android::dm::LoopControl;
 
 // Realistically, this file should be part of the android::fs_mgr namespace;
 using namespace android::fs_mgr;
@@ -114,30 +130,10 @@
     FS_STAT_SET_RESERVED_BLOCKS_FAILED = 0x20000,
     FS_STAT_ENABLE_ENCRYPTION_FAILED = 0x40000,
     FS_STAT_ENABLE_VERITY_FAILED = 0x80000,
+    FS_STAT_ENABLE_CASEFOLD_FAILED = 0x100000,
+    FS_STAT_ENABLE_METADATA_CSUM_FAILED = 0x200000,
 };
 
-// TODO: switch to inotify()
-bool fs_mgr_wait_for_file(const std::string& filename,
-                          const std::chrono::milliseconds relative_timeout,
-                          FileWaitMode file_wait_mode) {
-    auto start_time = std::chrono::steady_clock::now();
-
-    while (true) {
-        int rv = access(filename.c_str(), F_OK);
-        if (file_wait_mode == FileWaitMode::Exists) {
-            if (!rv || errno != ENOENT) return true;
-        } else if (file_wait_mode == FileWaitMode::DoesNotExist) {
-            if (rv && errno == ENOENT) return true;
-        }
-
-        std::this_thread::sleep_for(50ms);
-
-        auto now = std::chrono::steady_clock::now();
-        auto time_elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
-        if (time_elapsed > relative_timeout) return false;
-    }
-}
-
 static void log_fs_stat(const std::string& blk_device, int fs_stat) {
     if ((fs_stat & FS_STAT_IS_EXT4) == 0) return; // only log ext4
     std::string msg =
@@ -186,6 +182,7 @@
         return;
     }
 
+    Timer t;
     /* Check for the types of filesystems we know how to check */
     if (is_extfs(fs_type)) {
         /*
@@ -243,13 +240,12 @@
         } else {
             LINFO << "Running " << E2FSCK_BIN << " on " << realpath(blk_device);
             if (should_force_check(*fs_stat)) {
-                ret = android_fork_execvp_ext(
-                    ARRAY_SIZE(e2fsck_forced_argv), const_cast<char**>(e2fsck_forced_argv), &status,
-                    true, LOG_KLOG | LOG_FILE, true, const_cast<char*>(FSCK_LOG_FILE), nullptr, 0);
+                ret = logwrap_fork_execvp(ARRAY_SIZE(e2fsck_forced_argv), e2fsck_forced_argv,
+                                          &status, false, LOG_KLOG | LOG_FILE, false,
+                                          FSCK_LOG_FILE);
             } else {
-                ret = android_fork_execvp_ext(
-                    ARRAY_SIZE(e2fsck_argv), const_cast<char**>(e2fsck_argv), &status, true,
-                    LOG_KLOG | LOG_FILE, true, const_cast<char*>(FSCK_LOG_FILE), nullptr, 0);
+                ret = logwrap_fork_execvp(ARRAY_SIZE(e2fsck_argv), e2fsck_argv, &status, false,
+                                          LOG_KLOG | LOG_FILE, false, FSCK_LOG_FILE);
             }
 
             if (ret < 0) {
@@ -262,26 +258,29 @@
             }
         }
     } else if (is_f2fs(fs_type)) {
-        const char* f2fs_fsck_argv[] = {F2FS_FSCK_BIN, "-a", blk_device.c_str()};
-        const char* f2fs_fsck_forced_argv[] = {F2FS_FSCK_BIN, "-f", blk_device.c_str()};
+        const char* f2fs_fsck_argv[] = {F2FS_FSCK_BIN,     "-a", "-c", "10000", "--debug-cache",
+                                        blk_device.c_str()};
+        const char* f2fs_fsck_forced_argv[] = {
+                F2FS_FSCK_BIN, "-f", "-c", "10000", "--debug-cache", blk_device.c_str()};
 
         if (should_force_check(*fs_stat)) {
-            LINFO << "Running " << F2FS_FSCK_BIN << " -f " << realpath(blk_device);
-            ret = android_fork_execvp_ext(
-                ARRAY_SIZE(f2fs_fsck_forced_argv), const_cast<char**>(f2fs_fsck_forced_argv), &status,
-                true, LOG_KLOG | LOG_FILE, true, const_cast<char*>(FSCK_LOG_FILE), nullptr, 0);
+            LINFO << "Running " << F2FS_FSCK_BIN << " -f -c 10000 --debug-cache"
+                  << realpath(blk_device);
+            ret = logwrap_fork_execvp(ARRAY_SIZE(f2fs_fsck_forced_argv), f2fs_fsck_forced_argv,
+                                      &status, false, LOG_KLOG | LOG_FILE, false, FSCK_LOG_FILE);
         } else {
-            LINFO << "Running " << F2FS_FSCK_BIN << " -a " << realpath(blk_device);
-            ret = android_fork_execvp_ext(
-                ARRAY_SIZE(f2fs_fsck_argv), const_cast<char**>(f2fs_fsck_argv), &status, true,
-                LOG_KLOG | LOG_FILE, true, const_cast<char*>(FSCK_LOG_FILE), nullptr, 0);
+            LINFO << "Running " << F2FS_FSCK_BIN << " -a -c 10000 --debug-cache"
+                  << realpath(blk_device);
+            ret = logwrap_fork_execvp(ARRAY_SIZE(f2fs_fsck_argv), f2fs_fsck_argv, &status, false,
+                                      LOG_KLOG | LOG_FILE, false, FSCK_LOG_FILE);
         }
         if (ret < 0) {
             /* No need to check for error in fork, we can't really handle it now */
             LERROR << "Failed trying to run " << F2FS_FSCK_BIN;
         }
     }
-
+    android::base::SetProperty("ro.boottime.init.fsck." + Basename(target),
+                               std::to_string(t.duration().count()));
     return;
 }
 
@@ -302,10 +301,13 @@
     return true;
 }
 
+static bool needs_block_encryption(const FstabEntry& entry);
+static bool should_use_metadata_encryption(const FstabEntry& entry);
+
 // Read the primary superblock from an ext4 filesystem.  On failure return
 // false.  If it's not an ext4 filesystem, also set FS_STAT_INVALID_MAGIC.
-static bool read_ext4_superblock(const std::string& blk_device, struct ext4_super_block* sb,
-                                 int* fs_stat) {
+static bool read_ext4_superblock(const std::string& blk_device, const FstabEntry& entry,
+                                 struct ext4_super_block* sb, int* fs_stat) {
     android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(blk_device.c_str(), O_RDONLY | O_CLOEXEC)));
 
     if (fd < 0) {
@@ -322,7 +324,29 @@
         LINFO << "Invalid ext4 superblock on '" << blk_device << "'";
         // not a valid fs, tune2fs, fsck, and mount  will all fail.
         *fs_stat |= FS_STAT_INVALID_MAGIC;
-        return false;
+
+        bool encrypted = should_use_metadata_encryption(entry) || needs_block_encryption(entry);
+        if (entry.mount_point == "/data" &&
+            (!encrypted || android::base::StartsWith(blk_device, "/dev/block/dm-"))) {
+            // try backup superblock, if main superblock is corrupted
+            for (unsigned int blocksize = EXT4_MIN_BLOCK_SIZE; blocksize <= EXT4_MAX_BLOCK_SIZE;
+                 blocksize *= 2) {
+                uint64_t superblock = blocksize * 8;
+                if (blocksize == EXT4_MIN_BLOCK_SIZE) superblock++;
+
+                if (TEMP_FAILURE_RETRY(pread(fd, sb, sizeof(*sb), superblock * blocksize)) !=
+                    sizeof(*sb)) {
+                    PERROR << "Can't read '" << blk_device << "' superblock";
+                    return false;
+                }
+                if (is_ext4_superblock_valid(sb) &&
+                    (1 << (10 + sb->s_log_block_size) == blocksize)) {
+                    *fs_stat &= ~FS_STAT_INVALID_MAGIC;
+                    break;
+                }
+            }
+        }
+        if (*fs_stat & FS_STAT_INVALID_MAGIC) return false;
     }
     *fs_stat |= FS_STAT_IS_EXT4;
     LINFO << "superblock s_max_mnt_count:" << sb->s_max_mnt_count << "," << blk_device;
@@ -349,11 +373,10 @@
     return access(TUNE2FS_BIN, X_OK) == 0;
 }
 
-static bool run_tune2fs(const char* argv[], int argc) {
+static bool run_command(const char* argv[], int argc) {
     int ret;
 
-    ret = android_fork_execvp_ext(argc, const_cast<char**>(argv), nullptr, true,
-                                  LOG_KLOG | LOG_FILE, true, nullptr, nullptr, 0);
+    ret = logwrap_fork_execvp(argc, argv, nullptr, false, LOG_KLOG, false, nullptr);
     return ret == 0;
 }
 
@@ -362,6 +385,7 @@
                        const struct ext4_super_block* sb, int* fs_stat) {
     bool has_quota = (sb->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_QUOTA)) != 0;
     bool want_quota = entry.fs_mgr_flags.quota;
+    bool want_projid = android::base::GetBoolProperty("external_storage.projid.enabled", false);
 
     if (has_quota == want_quota) {
         return;
@@ -378,15 +402,19 @@
     if (want_quota) {
         LINFO << "Enabling quotas on " << blk_device;
         argv[1] = "-Oquota";
-        argv[2] = "-Qusrquota,grpquota";
+        // Once usr/grp unneeded, make just prjquota to save overhead
+        if (want_projid)
+            argv[2] = "-Qusrquota,grpquota,prjquota";
+        else
+            argv[2] = "-Qusrquota,grpquota";
         *fs_stat |= FS_STAT_QUOTA_ENABLED;
     } else {
         LINFO << "Disabling quotas on " << blk_device;
         argv[1] = "-O^quota";
-        argv[2] = "-Q^usrquota,^grpquota";
+        argv[2] = "-Q^usrquota,^grpquota,^prjquota";
     }
 
-    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+    if (!run_command(argv, ARRAY_SIZE(argv))) {
         LERROR << "Failed to run " TUNE2FS_BIN " to " << (want_quota ? "enable" : "disable")
                << " quotas on " << blk_device;
         *fs_stat |= FS_STAT_TOGGLE_QUOTAS_FAILED;
@@ -428,7 +456,7 @@
     const char* argv[] = {
             TUNE2FS_BIN,       "-r", reserved_blocks_str.c_str(), "-g", reserved_gid_str.c_str(),
             blk_device.c_str()};
-    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+    if (!run_command(argv, ARRAY_SIZE(argv))) {
         LERROR << "Failed to run " TUNE2FS_BIN " to set the number of reserved blocks on "
                << blk_device;
         *fs_stat |= FS_STAT_SET_RESERVED_BLOCKS_FAILED;
@@ -438,25 +466,44 @@
 // Enable file-based encryption if needed.
 static void tune_encrypt(const std::string& blk_device, const FstabEntry& entry,
                          const struct ext4_super_block* sb, int* fs_stat) {
-    bool has_encrypt = (sb->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_ENCRYPT)) != 0;
-    bool want_encrypt = entry.fs_mgr_flags.file_encryption;
-
-    if (has_encrypt || !want_encrypt) {
+    if (!entry.fs_mgr_flags.file_encryption) {
+        return;  // Nothing needs done.
+    }
+    std::vector<std::string> features_needed;
+    if ((sb->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_ENCRYPT)) == 0) {
+        features_needed.emplace_back("encrypt");
+    }
+    android::fscrypt::EncryptionOptions options;
+    if (!android::fscrypt::ParseOptions(entry.encryption_options, &options)) {
+        LERROR << "Unable to parse encryption options on " << blk_device << ": "
+               << entry.encryption_options;
         return;
     }
-
+    if ((options.flags &
+         (FSCRYPT_POLICY_FLAG_IV_INO_LBLK_64 | FSCRYPT_POLICY_FLAG_IV_INO_LBLK_32)) != 0) {
+        // We can only use this policy on ext4 if the "stable_inodes" feature
+        // is set on the filesystem, otherwise shrinking will break encrypted files.
+        if ((sb->s_feature_compat & cpu_to_le32(EXT4_FEATURE_COMPAT_STABLE_INODES)) == 0) {
+            features_needed.emplace_back("stable_inodes");
+        }
+    }
+    if (features_needed.size() == 0) {
+        return;
+    }
     if (!tune2fs_available()) {
         LERROR << "Unable to enable ext4 encryption on " << blk_device
                << " because " TUNE2FS_BIN " is missing";
         return;
     }
 
-    const char* argv[] = {TUNE2FS_BIN, "-Oencrypt", blk_device.c_str()};
+    auto flags = android::base::Join(features_needed, ',');
+    auto flag_arg = "-O"s + flags;
+    const char* argv[] = {TUNE2FS_BIN, flag_arg.c_str(), blk_device.c_str()};
 
-    LINFO << "Enabling ext4 encryption on " << blk_device;
-    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+    LINFO << "Enabling ext4 flags " << flags << " on " << blk_device;
+    if (!run_command(argv, ARRAY_SIZE(argv))) {
         LERROR << "Failed to run " TUNE2FS_BIN " to enable "
-               << "ext4 encryption on " << blk_device;
+               << "ext4 flags " << flags << " on " << blk_device;
         *fs_stat |= FS_STAT_ENABLE_ENCRYPTION_FAILED;
     }
 }
@@ -491,13 +538,93 @@
     LINFO << "Enabling ext4 verity on " << blk_device;
 
     const char* argv[] = {TUNE2FS_BIN, "-O", "verity", blk_device.c_str()};
-    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+    if (!run_command(argv, ARRAY_SIZE(argv))) {
         LERROR << "Failed to run " TUNE2FS_BIN " to enable "
                << "ext4 verity on " << blk_device;
         *fs_stat |= FS_STAT_ENABLE_VERITY_FAILED;
     }
 }
 
+// Enable casefold if needed.
+static void tune_casefold(const std::string& blk_device, const struct ext4_super_block* sb,
+                          int* fs_stat) {
+    bool has_casefold = (sb->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_CASEFOLD)) != 0;
+    bool wants_casefold =
+            android::base::GetBoolProperty("external_storage.casefold.enabled", false);
+
+    if (!wants_casefold || has_casefold) return;
+
+    std::string casefold_support;
+    if (!android::base::ReadFileToString(SYSFS_EXT4_CASEFOLD, &casefold_support)) {
+        LERROR << "Failed to open " << SYSFS_EXT4_CASEFOLD;
+        return;
+    }
+
+    if (!(android::base::Trim(casefold_support) == "supported")) {
+        LERROR << "Current ext4 casefolding not supported by kernel";
+        return;
+    }
+
+    if (!tune2fs_available()) {
+        LERROR << "Unable to enable ext4 casefold on " << blk_device
+               << " because " TUNE2FS_BIN " is missing";
+        return;
+    }
+
+    LINFO << "Enabling ext4 casefold on " << blk_device;
+
+    const char* argv[] = {TUNE2FS_BIN, "-O", "casefold", "-E", "encoding=utf8", blk_device.c_str()};
+    if (!run_command(argv, ARRAY_SIZE(argv))) {
+        LERROR << "Failed to run " TUNE2FS_BIN " to enable "
+               << "ext4 casefold on " << blk_device;
+        *fs_stat |= FS_STAT_ENABLE_CASEFOLD_FAILED;
+    }
+}
+
+static bool resize2fs_available(void) {
+    return access(RESIZE2FS_BIN, X_OK) == 0;
+}
+
+// Enable metadata_csum
+static void tune_metadata_csum(const std::string& blk_device, const FstabEntry& entry,
+                               const struct ext4_super_block* sb, int* fs_stat) {
+    bool has_meta_csum =
+            (sb->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) != 0;
+    bool want_meta_csum = entry.fs_mgr_flags.ext_meta_csum;
+
+    if (has_meta_csum || !want_meta_csum) return;
+
+    if (!tune2fs_available()) {
+        LERROR << "Unable to enable metadata_csum on " << blk_device
+               << " because " TUNE2FS_BIN " is missing";
+        return;
+    }
+    if (!resize2fs_available()) {
+        LERROR << "Unable to enable metadata_csum on " << blk_device
+               << " because " RESIZE2FS_BIN " is missing";
+        return;
+    }
+
+    LINFO << "Enabling ext4 metadata_csum on " << blk_device;
+
+    // requires to give last_fsck_time to current to avoid insane time.
+    // otherwise, tune2fs won't enable metadata_csum.
+    std::string now = std::to_string(time(0));
+    const char* tune2fs_args[] = {TUNE2FS_BIN, "-O",        "metadata_csum,64bit,extent",
+                                  "-T",        now.c_str(), blk_device.c_str()};
+    const char* resize2fs_args[] = {RESIZE2FS_BIN, "-b", blk_device.c_str()};
+
+    if (!run_command(tune2fs_args, ARRAY_SIZE(tune2fs_args))) {
+        LERROR << "Failed to run " TUNE2FS_BIN " to enable "
+               << "ext4 metadata_csum on " << blk_device;
+        *fs_stat |= FS_STAT_ENABLE_METADATA_CSUM_FAILED;
+    } else if (!run_command(resize2fs_args, ARRAY_SIZE(resize2fs_args))) {
+        LERROR << "Failed to run " RESIZE2FS_BIN " to enable "
+               << "ext4 metadata_csum on " << blk_device;
+        *fs_stat |= FS_STAT_ENABLE_METADATA_CSUM_FAILED;
+    }
+}
+
 // Read the primary superblock from an f2fs filesystem.  On failure return
 // false.  If it's not an f2fs filesystem, also set FS_STAT_INVALID_MAGIC.
 #define F2FS_BLKSIZE 4096
@@ -561,7 +688,7 @@
     if (is_extfs(entry.fs_type)) {
         struct ext4_super_block sb;
 
-        if (read_ext4_superblock(blk_device, &sb, &fs_stat)) {
+        if (read_ext4_superblock(blk_device, entry, &sb, &fs_stat)) {
             if ((sb.s_feature_incompat & EXT4_FEATURE_INCOMPAT_RECOVER) != 0 ||
                 (sb.s_state & EXT4_VALID_FS) == 0) {
                 LINFO << "Filesystem on " << blk_device << " was not cleanly shutdown; "
@@ -588,13 +715,15 @@
 
     if (is_extfs(entry.fs_type) &&
         (entry.reserved_size != 0 || entry.fs_mgr_flags.file_encryption ||
-         entry.fs_mgr_flags.fs_verity)) {
+         entry.fs_mgr_flags.fs_verity || entry.fs_mgr_flags.ext_meta_csum)) {
         struct ext4_super_block sb;
 
-        if (read_ext4_superblock(blk_device, &sb, &fs_stat)) {
+        if (read_ext4_superblock(blk_device, entry, &sb, &fs_stat)) {
             tune_reserved_size(blk_device, entry, &sb, &fs_stat);
             tune_encrypt(blk_device, entry, &sb, &fs_stat);
             tune_verity(blk_device, entry, &sb, &fs_stat);
+            tune_casefold(blk_device, &sb, &fs_stat);
+            tune_metadata_csum(blk_device, entry, &sb, &fs_stat);
         }
     }
 
@@ -637,15 +766,33 @@
     unsigned long mountflags = entry.flags;
     int ret = 0;
     int save_errno = 0;
+    int gc_allowance = 0;
+    std::string opts;
+    bool try_f2fs_gc_allowance = is_f2fs(entry.fs_type) && entry.fs_checkpoint_opts.length() > 0;
+    Timer t;
+
     do {
+        if (save_errno == EINVAL && try_f2fs_gc_allowance) {
+            PINFO << "Kernel does not support checkpoint=disable:[n]%, trying without.";
+            try_f2fs_gc_allowance = false;
+        }
+        if (try_f2fs_gc_allowance) {
+            opts = entry.fs_options + entry.fs_checkpoint_opts + ":" +
+                   std::to_string(gc_allowance) + "%";
+        } else {
+            opts = entry.fs_options;
+        }
         if (save_errno == EAGAIN) {
             PINFO << "Retrying mount (source=" << source << ",target=" << target
-                  << ",type=" << entry.fs_type << ")=" << ret << "(" << save_errno << ")";
+                  << ",type=" << entry.fs_type << ", gc_allowance=" << gc_allowance << "%)=" << ret
+                  << "(" << save_errno << ")";
         }
         ret = mount(source.c_str(), target.c_str(), entry.fs_type.c_str(), mountflags,
-                    entry.fs_options.c_str());
+                    opts.c_str());
         save_errno = errno;
-    } while (ret && save_errno == EAGAIN);
+        if (try_f2fs_gc_allowance) gc_allowance += 10;
+    } while ((ret && save_errno == EAGAIN && gc_allowance <= 100) ||
+             (ret && save_errno == EINVAL && try_f2fs_gc_allowance));
     const char* target_missing = "";
     const char* source_missing = "";
     if (save_errno == ENOENT) {
@@ -661,6 +808,8 @@
     if ((ret == 0) && (mountflags & MS_RDONLY) != 0) {
         fs_mgr_set_blk_ro(source);
     }
+    android::base::SetProperty("ro.boottime.init.mount." + Basename(target),
+                               std::to_string(t.duration().count()));
     errno = save_errno;
     return ret;
 }
@@ -842,7 +991,7 @@
 }
 
 static bool should_use_metadata_encryption(const FstabEntry& entry) {
-    return !entry.key_dir.empty() &&
+    return !entry.metadata_key_dir.empty() &&
            (entry.fs_mgr_flags.file_encryption || entry.fs_mgr_flags.force_fde_or_fbe);
 }
 
@@ -873,37 +1022,22 @@
     }
 }
 
-static bool call_vdc(const std::vector<std::string>& args) {
+static bool call_vdc(const std::vector<std::string>& args, int* ret) {
     std::vector<char const*> argv;
     argv.emplace_back("/system/bin/vdc");
     for (auto& arg : args) {
         argv.emplace_back(arg.c_str());
     }
     LOG(INFO) << "Calling: " << android::base::Join(argv, ' ');
-    int ret =
-            android_fork_execvp(argv.size(), const_cast<char**>(argv.data()), nullptr, false, true);
-    if (ret != 0) {
-        LOG(ERROR) << "vdc returned error code: " << ret;
-        return false;
-    }
-    LOG(DEBUG) << "vdc finished successfully";
-    return true;
-}
-
-static bool call_vdc_ret(const std::vector<std::string>& args, int* ret) {
-    std::vector<char const*> argv;
-    argv.emplace_back("/system/bin/vdc");
-    for (auto& arg : args) {
-        argv.emplace_back(arg.c_str());
-    }
-    LOG(INFO) << "Calling: " << android::base::Join(argv, ' ');
-    int err = android_fork_execvp(argv.size(), const_cast<char**>(argv.data()), ret, false, true);
+    int err = logwrap_fork_execvp(argv.size(), argv.data(), ret, false, LOG_ALOG, false, nullptr);
     if (err != 0) {
         LOG(ERROR) << "vdc call failed with error code: " << err;
         return false;
     }
     LOG(DEBUG) << "vdc finished successfully";
-    *ret = WEXITSTATUS(*ret);
+    if (ret != nullptr) {
+        *ret = WEXITSTATUS(*ret);
+    }
     return true;
 }
 
@@ -925,26 +1059,36 @@
     return true;
 }
 
+static bool SupportsCheckpoint(FstabEntry* entry) {
+    return entry->fs_mgr_flags.checkpoint_blk || entry->fs_mgr_flags.checkpoint_fs;
+}
+
 class CheckpointManager {
   public:
-    CheckpointManager(int needs_checkpoint = -1) : needs_checkpoint_(needs_checkpoint) {}
+    CheckpointManager(int needs_checkpoint = -1, bool metadata_encrypted = false)
+        : needs_checkpoint_(needs_checkpoint), metadata_encrypted_(metadata_encrypted) {}
 
-    bool Update(FstabEntry* entry, const std::string& block_device = std::string()) {
-        if (!entry->fs_mgr_flags.checkpoint_blk && !entry->fs_mgr_flags.checkpoint_fs) {
-            return true;
+    bool NeedsCheckpoint() {
+        if (needs_checkpoint_ != UNKNOWN) {
+            return needs_checkpoint_ == YES;
         }
-
-        if (entry->fs_mgr_flags.checkpoint_blk) {
-            call_vdc({"checkpoint", "restoreCheckpoint", entry->blk_device});
-        }
-
-        if (needs_checkpoint_ == UNKNOWN &&
-            !call_vdc_ret({"checkpoint", "needsCheckpoint"}, &needs_checkpoint_)) {
+        if (!call_vdc({"checkpoint", "needsCheckpoint"}, &needs_checkpoint_)) {
             LERROR << "Failed to find if checkpointing is needed. Assuming no.";
             needs_checkpoint_ = NO;
         }
+        return needs_checkpoint_ == YES;
+    }
 
-        if (needs_checkpoint_ != YES) {
+    bool Update(FstabEntry* entry, const std::string& block_device = std::string()) {
+        if (!SupportsCheckpoint(entry)) {
+            return true;
+        }
+
+        if (entry->fs_mgr_flags.checkpoint_blk && !metadata_encrypted_) {
+            call_vdc({"checkpoint", "restoreCheckpoint", entry->blk_device}, nullptr);
+        }
+
+        if (!NeedsCheckpoint()) {
             return true;
         }
 
@@ -957,7 +1101,7 @@
     }
 
     bool Revert(FstabEntry* entry) {
-        if (!entry->fs_mgr_flags.checkpoint_blk && !entry->fs_mgr_flags.checkpoint_fs) {
+        if (!SupportsCheckpoint(entry)) {
             return true;
         }
 
@@ -981,7 +1125,7 @@
     bool UpdateCheckpointPartition(FstabEntry* entry, const std::string& block_device) {
         if (entry->fs_mgr_flags.checkpoint_fs) {
             if (is_f2fs(entry->fs_type)) {
-                entry->fs_options += ",checkpoint=disable";
+                entry->fs_checkpoint_opts = ",checkpoint=disable";
             } else {
                 LERROR << entry->fs_type << " does not implement checkpoints.";
             }
@@ -1002,8 +1146,28 @@
                 }
 
                 android::dm::DmTable table;
-                if (!table.AddTarget(std::make_unique<android::dm::DmTargetBow>(
-                            0, size, entry->blk_device))) {
+                auto bowTarget =
+                        std::make_unique<android::dm::DmTargetBow>(0, size, entry->blk_device);
+
+                // dm-bow uses the first block as a log record, and relocates the real first block
+                // elsewhere. For metadata encrypted devices, dm-bow sits below dm-default-key, and
+                // for post Android Q devices dm-default-key uses a block size of 4096 always.
+                // So if dm-bow's block size, which by default is the block size of the underlying
+                // hardware, is less than dm-default-key's, blocks will get broken up and I/O will
+                // fail as it won't be data_unit_size aligned.
+                // However, since it is possible there is an already shipping non
+                // metadata-encrypted device with smaller blocks, we must not change this for
+                // devices shipped with Q or earlier unless they explicitly selected dm-default-key
+                // v2
+                constexpr unsigned int pre_gki_level = __ANDROID_API_Q__;
+                unsigned int options_format_version = android::base::GetUintProperty<unsigned int>(
+                        "ro.crypto.dm_default_key.options_format.version",
+                        (android::fscrypt::GetFirstApiLevel() <= pre_gki_level ? 1 : 2));
+                if (options_format_version > 1) {
+                    bowTarget->SetBlockSize(4096);
+                }
+
+                if (!table.AddTarget(std::move(bowTarget))) {
                     LERROR << "Failed to add bow target";
                     return false;
                 }
@@ -1029,6 +1193,7 @@
 
     enum { UNKNOWN = -1, NO = 0, YES = 1 };
     int needs_checkpoint_;
+    bool metadata_encrypted_;
     std::map<std::string, std::string> device_map_;
 };
 
@@ -1076,6 +1241,83 @@
     }
 }
 
+static constexpr const char* kUserdataWrapperName = "userdata-wrapper";
+
+static void WrapUserdata(FstabEntry* entry, dev_t dev, const std::string& block_device) {
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (dm.GetState(kUserdataWrapperName) != DmDeviceState::INVALID) {
+        // This will report failure for us. If we do fail to get the path,
+        // we leave the device unwrapped.
+        dm.GetDmDevicePathByName(kUserdataWrapperName, &entry->blk_device);
+        return;
+    }
+
+    unique_fd fd(open(block_device.c_str(), O_RDONLY | O_CLOEXEC));
+    if (fd < 0) {
+        PLOG(ERROR) << "open failed: " << entry->blk_device;
+        return;
+    }
+
+    auto dev_str = android::base::StringPrintf("%u:%u", major(dev), minor(dev));
+    uint64_t sectors = get_block_device_size(fd) / 512;
+
+    android::dm::DmTable table;
+    table.Emplace<DmTargetLinear>(0, sectors, dev_str, 0);
+
+    std::string dm_path;
+    if (!dm.CreateDevice(kUserdataWrapperName, table, &dm_path, 20s)) {
+        LOG(ERROR) << "Failed to create userdata wrapper device";
+        return;
+    }
+    entry->blk_device = dm_path;
+}
+
+// When using Virtual A/B, partitions can be backed by /data and mapped with
+// device-mapper in first-stage init. This can happen when merging an OTA or
+// when using adb remount to house "scratch". In this case, /data cannot be
+// mounted directly off the userdata block device, and e2fsck will refuse to
+// scan it, because the kernel reports the block device as in-use.
+//
+// As a workaround, when mounting /data, we create a trivial dm-linear wrapper
+// if the underlying block device already has dependencies. Note that we make
+// an exception for metadata-encrypted devices, since dm-default-key is already
+// a wrapper.
+static void WrapUserdataIfNeeded(FstabEntry* entry, const std::string& actual_block_device = {}) {
+    const auto& block_device =
+            actual_block_device.empty() ? entry->blk_device : actual_block_device;
+    if (entry->mount_point != "/data" || !entry->metadata_key_dir.empty() ||
+        android::base::StartsWith(block_device, "/dev/block/dm-")) {
+        return;
+    }
+
+    struct stat st;
+    if (stat(block_device.c_str(), &st) < 0) {
+        PLOG(ERROR) << "stat failed: " << block_device;
+        return;
+    }
+
+    std::string path = android::base::StringPrintf("/sys/dev/block/%u:%u/holders",
+                                                   major(st.st_rdev), minor(st.st_rdev));
+    std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(path.c_str()), closedir);
+    if (!dir) {
+        PLOG(ERROR) << "opendir failed: " << path;
+        return;
+    }
+
+    struct dirent* d;
+    bool has_holders = false;
+    while ((d = readdir(dir.get())) != nullptr) {
+        if (strcmp(d->d_name, ".") != 0 && strcmp(d->d_name, "..") != 0) {
+            has_holders = true;
+            break;
+        }
+    }
+
+    if (has_holders) {
+        WrapUserdata(entry, st.st_rdev, block_device);
+    }
+}
+
 static bool IsMountPointMounted(const std::string& mount_point) {
     // Check if this is already mounted.
     Fstab fstab;
@@ -1098,7 +1340,9 @@
         return FS_MGR_MNTALL_FAIL;
     }
 
-    for (size_t i = 0; i < fstab->size(); i++) {
+    // Keep i int to prevent unsigned integer overflow from (i = top_idx - 1),
+    // where top_idx is 0. It will give SIGABRT
+    for (int i = 0; i < static_cast<int>(fstab->size()); i++) {
         auto& current_entry = (*fstab)[i];
 
         // If a filesystem should have been mounted in the first stage, we
@@ -1132,6 +1376,12 @@
             continue;
         }
 
+        // Terrible hack to make it possible to remount /data.
+        // TODO: refact fs_mgr_mount_all and get rid of this.
+        if (mount_mode == MOUNT_MODE_ONLY_USERDATA && current_entry.mount_point != "/data") {
+            continue;
+        }
+
         // Translate LABEL= file system labels into block devices.
         if (is_extfs(current_entry.fs_type)) {
             if (!TranslateExtLabels(&current_entry)) {
@@ -1147,12 +1397,13 @@
             }
         }
 
+        WrapUserdataIfNeeded(&current_entry);
+
         if (!checkpoint_manager.Update(&current_entry)) {
             continue;
         }
 
-        if (current_entry.fs_mgr_flags.wait &&
-            !fs_mgr_wait_for_file(current_entry.blk_device, 20s)) {
+        if (current_entry.fs_mgr_flags.wait && !WaitForFile(current_entry.blk_device, 20s)) {
             LERROR << "Skipping '" << current_entry.blk_device << "' during mount_all";
             continue;
         }
@@ -1215,7 +1466,8 @@
                 encryptable = status;
                 if (status == FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION) {
                     if (!call_vdc({"cryptfs", "encryptFstab", attempted_entry.blk_device,
-                                   attempted_entry.mount_point})) {
+                                   attempted_entry.mount_point},
+                                  nullptr)) {
                         LERROR << "Encryption failed";
                         return FS_MGR_MNTALL_FAIL;
                     }
@@ -1287,7 +1539,8 @@
         } else if (mount_errno != EBUSY && mount_errno != EACCES &&
                    should_use_metadata_encryption(attempted_entry)) {
             if (!call_vdc({"cryptfs", "mountFstab", attempted_entry.blk_device,
-                           attempted_entry.mount_point})) {
+                           attempted_entry.mount_point},
+                          nullptr)) {
                 ++error_count;
             }
             encryptable = FS_MGR_MNTALL_DEV_IS_METADATA_ENCRYPTED;
@@ -1353,7 +1606,7 @@
                 continue;
             }
         } else if ((current_entry.fs_mgr_flags.verify)) {
-            if (!fs_mgr_teardown_verity(&current_entry, true /* wait */)) {
+            if (!fs_mgr_teardown_verity(&current_entry)) {
                 LERROR << "Failed to tear down verified partition on mount point: "
                        << current_entry.mount_point;
                 ret |= FsMgrUmountStatus::ERROR_VERITY;
@@ -1364,9 +1617,198 @@
     return ret;
 }
 
+static std::chrono::milliseconds GetMillisProperty(const std::string& name,
+                                                   std::chrono::milliseconds default_value) {
+    auto value = GetUintProperty(name, static_cast<uint64_t>(default_value.count()));
+    return std::chrono::milliseconds(std::move(value));
+}
+
+static bool fs_mgr_unmount_all_data_mounts(const std::string& data_block_device) {
+    LINFO << __FUNCTION__ << "(): about to umount everything on top of " << data_block_device;
+    Timer t;
+    auto timeout = GetMillisProperty("init.userspace_reboot.userdata_remount.timeoutmillis", 5s);
+    while (true) {
+        bool umount_done = true;
+        Fstab proc_mounts;
+        if (!ReadFstabFromFile("/proc/mounts", &proc_mounts)) {
+            LERROR << __FUNCTION__ << "(): Can't read /proc/mounts";
+            return false;
+        }
+        // Now proceed with other bind mounts on top of /data.
+        for (const auto& entry : proc_mounts) {
+            std::string block_device;
+            if (StartsWith(entry.blk_device, "/dev/block") &&
+                !Realpath(entry.blk_device, &block_device)) {
+                PWARNING << __FUNCTION__ << "(): failed to realpath " << entry.blk_device;
+                block_device = entry.blk_device;
+            }
+            if (data_block_device == block_device) {
+                if (umount2(entry.mount_point.c_str(), 0) != 0) {
+                    PERROR << __FUNCTION__ << "(): Failed to umount " << entry.mount_point;
+                    umount_done = false;
+                }
+            }
+        }
+        if (umount_done) {
+            LINFO << __FUNCTION__ << "(): Unmounting /data took " << t;
+            return true;
+        }
+        if (t.duration() > timeout) {
+            LERROR << __FUNCTION__ << "(): Timed out unmounting all mounts on "
+                   << data_block_device;
+            Fstab remaining_mounts;
+            if (!ReadFstabFromFile("/proc/mounts", &remaining_mounts)) {
+                LERROR << __FUNCTION__ << "(): Can't read /proc/mounts";
+            } else {
+                LERROR << __FUNCTION__ << "(): Following mounts remaining";
+                for (const auto& e : remaining_mounts) {
+                    LERROR << __FUNCTION__ << "(): mount point: " << e.mount_point
+                           << " block device: " << e.blk_device;
+                }
+            }
+            return false;
+        }
+        std::this_thread::sleep_for(50ms);
+    }
+}
+
+static bool UnwindDmDeviceStack(const std::string& block_device,
+                                std::vector<std::string>* dm_stack) {
+    if (!StartsWith(block_device, "/dev/block/")) {
+        LWARNING << block_device << " is not a block device";
+        return false;
+    }
+    std::string current = block_device;
+    DeviceMapper& dm = DeviceMapper::Instance();
+    while (true) {
+        dm_stack->push_back(current);
+        if (!dm.IsDmBlockDevice(current)) {
+            break;
+        }
+        auto parent = dm.GetParentBlockDeviceByPath(current);
+        if (!parent) {
+            return false;
+        }
+        current = *parent;
+    }
+    return true;
+}
+
+FstabEntry* fs_mgr_get_mounted_entry_for_userdata(Fstab* fstab,
+                                                  const std::string& data_block_device) {
+    std::vector<std::string> dm_stack;
+    if (!UnwindDmDeviceStack(data_block_device, &dm_stack)) {
+        LERROR << "Failed to unwind dm-device stack for " << data_block_device;
+        return nullptr;
+    }
+    for (auto& entry : *fstab) {
+        if (entry.mount_point != "/data") {
+            continue;
+        }
+        std::string block_device;
+        if (entry.fs_mgr_flags.logical) {
+            if (!fs_mgr_update_logical_partition(&entry)) {
+                LERROR << "Failed to update logic partition " << entry.blk_device;
+                continue;
+            }
+            block_device = entry.blk_device;
+        } else if (!Realpath(entry.blk_device, &block_device)) {
+            PWARNING << "Failed to realpath " << entry.blk_device;
+            block_device = entry.blk_device;
+        }
+        if (std::find(dm_stack.begin(), dm_stack.end(), block_device) != dm_stack.end()) {
+            return &entry;
+        }
+    }
+    LERROR << "Didn't find entry that was used to mount /data onto " << data_block_device;
+    return nullptr;
+}
+
+// TODO(b/143970043): return different error codes based on which step failed.
+int fs_mgr_remount_userdata_into_checkpointing(Fstab* fstab) {
+    Fstab proc_mounts;
+    if (!ReadFstabFromFile("/proc/mounts", &proc_mounts)) {
+        LERROR << "Can't read /proc/mounts";
+        return -1;
+    }
+    auto mounted_entry = GetEntryForMountPoint(&proc_mounts, "/data");
+    if (mounted_entry == nullptr) {
+        LERROR << "/data is not mounted";
+        return -1;
+    }
+    std::string block_device;
+    if (!Realpath(mounted_entry->blk_device, &block_device)) {
+        PERROR << "Failed to realpath " << mounted_entry->blk_device;
+        return -1;
+    }
+    auto fstab_entry = fs_mgr_get_mounted_entry_for_userdata(fstab, block_device);
+    if (fstab_entry == nullptr) {
+        LERROR << "Can't find /data in fstab";
+        return -1;
+    }
+    bool force_umount = GetBoolProperty("sys.init.userdata_remount.force_umount", false);
+    if (force_umount) {
+        LINFO << "Will force an umount of userdata even if it's not required";
+    }
+    if (!force_umount && !SupportsCheckpoint(fstab_entry)) {
+        LINFO << "Userdata doesn't support checkpointing. Nothing to do";
+        return 0;
+    }
+    CheckpointManager checkpoint_manager;
+    if (!force_umount && !checkpoint_manager.NeedsCheckpoint()) {
+        LINFO << "Checkpointing not needed. Don't remount";
+        return 0;
+    }
+    if (!force_umount && fstab_entry->fs_mgr_flags.checkpoint_fs) {
+        // Userdata is f2fs, simply remount it.
+        if (!checkpoint_manager.Update(fstab_entry)) {
+            LERROR << "Failed to remount userdata in checkpointing mode";
+            return -1;
+        }
+        if (mount(block_device.c_str(), fstab_entry->mount_point.c_str(), "none",
+                  MS_REMOUNT | fstab_entry->flags, fstab_entry->fs_options.c_str()) != 0) {
+            PERROR << "Failed to remount userdata in checkpointing mode";
+            return -1;
+        }
+    } else {
+        LINFO << "Unmounting /data before remounting into checkpointing mode";
+        if (!fs_mgr_unmount_all_data_mounts(block_device)) {
+            LERROR << "Failed to umount /data";
+            return -1;
+        }
+        DeviceMapper& dm = DeviceMapper::Instance();
+        while (dm.IsDmBlockDevice(block_device)) {
+            auto next_device = dm.GetParentBlockDeviceByPath(block_device);
+            auto name = dm.GetDmDeviceNameByPath(block_device);
+            if (!name) {
+                LERROR << "Failed to get dm-name for " << block_device;
+                return -1;
+            }
+            LINFO << "Deleting " << block_device << " named " << *name;
+            if (!dm.DeleteDevice(*name, 3s)) {
+                return -1;
+            }
+            if (!next_device) {
+                LERROR << "Failed to find parent device for " << block_device;
+            }
+            block_device = *next_device;
+        }
+        LINFO << "Remounting /data";
+        // TODO(b/143970043): remove this hack after fs_mgr_mount_all is refactored.
+        int result = fs_mgr_mount_all(fstab, MOUNT_MODE_ONLY_USERDATA);
+        return result == FS_MGR_MNTALL_FAIL ? -1 : 0;
+    }
+    return 0;
+}
+
 // wrapper to __mount() and expects a fully prepared fstab_rec,
 // unlike fs_mgr_do_mount which does more things with avb / verity etc.
 int fs_mgr_do_mount_one(const FstabEntry& entry, const std::string& mount_point) {
+    // First check the filesystem if requested.
+    if (entry.fs_mgr_flags.wait && !WaitForFile(entry.blk_device, 20s)) {
+        LERROR << "Skipping mounting '" << entry.blk_device << "'";
+    }
+
     // Run fsck if needed
     prepare_fs_for_mount(entry.blk_device, entry);
 
@@ -1385,11 +1827,11 @@
 // in turn, and stop on 1st success, or no more match.
 static int fs_mgr_do_mount_helper(Fstab* fstab, const std::string& n_name,
                                   const std::string& n_blk_device, const char* tmp_mount_point,
-                                  int needs_checkpoint) {
+                                  int needs_checkpoint, bool metadata_encrypted) {
     int mount_errors = 0;
     int first_mount_errno = 0;
     std::string mount_point;
-    CheckpointManager checkpoint_manager(needs_checkpoint);
+    CheckpointManager checkpoint_manager(needs_checkpoint, metadata_encrypted);
     AvbUniquePtr avb_handle(nullptr);
 
     if (!fstab) {
@@ -1417,13 +1859,15 @@
             }
         }
 
+        WrapUserdataIfNeeded(&fstab_entry, n_blk_device);
+
         if (!checkpoint_manager.Update(&fstab_entry, n_blk_device)) {
             LERROR << "Could not set up checkpoint partition, skipping!";
             continue;
         }
 
         // First check the filesystem if requested.
-        if (fstab_entry.fs_mgr_flags.wait && !fs_mgr_wait_for_file(n_blk_device, 20s)) {
+        if (fstab_entry.fs_mgr_flags.wait && !WaitForFile(n_blk_device, 20s)) {
             LERROR << "Skipping mounting '" << n_blk_device << "'";
             continue;
         }
@@ -1497,12 +1941,13 @@
 }
 
 int fs_mgr_do_mount(Fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point) {
-    return fs_mgr_do_mount_helper(fstab, n_name, n_blk_device, tmp_mount_point, -1);
+    return fs_mgr_do_mount_helper(fstab, n_name, n_blk_device, tmp_mount_point, -1, false);
 }
 
 int fs_mgr_do_mount(Fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point,
-                    bool needs_checkpoint) {
-    return fs_mgr_do_mount_helper(fstab, n_name, n_blk_device, tmp_mount_point, needs_checkpoint);
+                    bool needs_checkpoint, bool metadata_encrypted) {
+    return fs_mgr_do_mount_helper(fstab, n_name, n_blk_device, tmp_mount_point, needs_checkpoint,
+                                  metadata_encrypted);
 }
 
 /*
@@ -1533,56 +1978,37 @@
     return true;
 }
 
-static bool PrepareZramDevice(const std::string& loop, off64_t size, const std::string& bdev) {
-    if (loop.empty() && bdev.empty()) return true;
+static bool PrepareZramBackingDevice(off64_t size) {
 
-    if (bdev.length()) {
-        return InstallZramDevice(bdev);
-    }
-
-    // Get free loopback
-    unique_fd loop_fd(TEMP_FAILURE_RETRY(open("/dev/loop-control", O_RDWR | O_CLOEXEC)));
-    if (loop_fd.get() == -1) {
-        PERROR << "Cannot open loop-control";
-        return false;
-    }
-
-    int num = ioctl(loop_fd.get(), LOOP_CTL_GET_FREE);
-    if (num == -1) {
-        PERROR << "Cannot get free loop slot";
-        return false;
-    }
+    constexpr const char* file_path = "/data/per_boot/zram_swap";
+    if (size == 0) return true;
 
     // Prepare target path
-    unique_fd target_fd(TEMP_FAILURE_RETRY(open(loop.c_str(), O_RDWR | O_CREAT | O_CLOEXEC, 0600)));
+    unique_fd target_fd(TEMP_FAILURE_RETRY(open(file_path, O_RDWR | O_CREAT | O_CLOEXEC, 0600)));
     if (target_fd.get() == -1) {
-        PERROR << "Cannot open target path: " << loop;
+        PERROR << "Cannot open target path: " << file_path;
         return false;
     }
     if (fallocate(target_fd.get(), 0, 0, size) < 0) {
-        PERROR << "Cannot truncate target path: " << loop;
+        PERROR << "Cannot truncate target path: " << file_path;
         return false;
     }
 
-    // Connect loopback (device_fd) to target path (target_fd)
-    std::string device = android::base::StringPrintf("/dev/block/loop%d", num);
-    unique_fd device_fd(TEMP_FAILURE_RETRY(open(device.c_str(), O_RDWR | O_CLOEXEC)));
-    if (device_fd.get() == -1) {
-        PERROR << "Cannot open /dev/block/loop" << num;
-        return false;
-    }
-
-    if (ioctl(device_fd.get(), LOOP_SET_FD, target_fd.get())) {
-        PERROR << "Cannot set loopback to target path";
+    // Allocate loop device and attach it to file_path.
+    LoopControl loop_control;
+    std::string device;
+    if (!loop_control.Attach(target_fd.get(), 5s, &device)) {
         return false;
     }
 
     // set block size & direct IO
-    if (ioctl(device_fd.get(), LOOP_SET_BLOCK_SIZE, 4096)) {
-        PWARNING << "Cannot set 4KB blocksize to /dev/block/loop" << num;
+    unique_fd device_fd(TEMP_FAILURE_RETRY(open(device.c_str(), O_RDWR | O_CLOEXEC)));
+    if (device_fd.get() == -1) {
+        PERROR << "Cannot open " << device;
+        return false;
     }
-    if (ioctl(device_fd.get(), LOOP_SET_DIRECT_IO, 1)) {
-        PWARNING << "Cannot set direct_io to /dev/block/loop" << num;
+    if (!LoopControl::EnableDirectIo(device_fd.get())) {
+        return false;
     }
 
     return InstallZramDevice(device);
@@ -1596,11 +2022,10 @@
             continue;
         }
 
-        if (!PrepareZramDevice(entry.zram_loopback_path, entry.zram_loopback_size, entry.zram_backing_dev_path)) {
-            LERROR << "Skipping losetup for '" << entry.blk_device << "'";
-        }
-
         if (entry.zram_size > 0) {
+	    if (!PrepareZramBackingDevice(entry.zram_backingdev_size)) {
+                LERROR << "Failure of zram backing device file for '" << entry.blk_device << "'";
+            }
             // A zram_size was specified, so we need to configure the
             // device.  There is no point in having multiple zram devices
             // on a system (all the memory comes from the same pool) so
@@ -1626,7 +2051,7 @@
             fprintf(zram_fp.get(), "%" PRId64 "\n", entry.zram_size);
         }
 
-        if (entry.fs_mgr_flags.wait && !fs_mgr_wait_for_file(entry.blk_device, 20s)) {
+        if (entry.fs_mgr_flags.wait && !WaitForFile(entry.blk_device, 20s)) {
             LERROR << "Skipping mkswap for '" << entry.blk_device << "'";
             ret = false;
             continue;
@@ -1637,10 +2062,8 @@
                 MKSWAP_BIN,
                 entry.blk_device.c_str(),
         };
-        int err = 0;
-        int status;
-        err = android_fork_execvp_ext(ARRAY_SIZE(mkswap_argv), const_cast<char**>(mkswap_argv),
-                                      &status, true, LOG_KLOG, false, nullptr, nullptr, 0);
+        int err = logwrap_fork_execvp(ARRAY_SIZE(mkswap_argv), mkswap_argv, nullptr, false,
+                                      LOG_KLOG, false, nullptr);
         if (err) {
             LERROR << "mkswap failed for " << entry.blk_device;
             ret = false;
@@ -1666,38 +2089,6 @@
     return ret;
 }
 
-bool fs_mgr_load_verity_state(int* mode) {
-    /* return the default mode, unless any of the verified partitions are in
-     * logging mode, in which case return that */
-    *mode = VERITY_MODE_DEFAULT;
-
-    Fstab fstab;
-    if (!ReadDefaultFstab(&fstab)) {
-        LERROR << "Failed to read default fstab";
-        return false;
-    }
-
-    for (const auto& entry : fstab) {
-        if (entry.fs_mgr_flags.avb) {
-            *mode = VERITY_MODE_RESTART;  // avb only supports restart mode.
-            break;
-        } else if (!entry.fs_mgr_flags.verify) {
-            continue;
-        }
-
-        int current;
-        if (load_verity_state(entry, &current) < 0) {
-            continue;
-        }
-        if (current != VERITY_MODE_DEFAULT) {
-            *mode = current;
-            break;
-        }
-    }
-
-    return true;
-}
-
 bool fs_mgr_is_verity_enabled(const FstabEntry& entry) {
     if (!entry.fs_mgr_flags.verify && !entry.fs_mgr_flags.avb) {
         return false;
diff --git a/fs_mgr/fs_mgr_dm_linear.cpp b/fs_mgr/fs_mgr_dm_linear.cpp
index ee6ffdb..9046132 100644
--- a/fs_mgr/fs_mgr_dm_linear.cpp
+++ b/fs_mgr/fs_mgr_dm_linear.cpp
@@ -38,6 +38,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
+#include <fs_mgr/file_wait.h>
 #include <liblp/reader.h>
 
 #include "fs_mgr_priv.h"
@@ -51,45 +52,63 @@
 using DmTargetZero = android::dm::DmTargetZero;
 using DmTargetLinear = android::dm::DmTargetLinear;
 
-static bool GetPhysicalPartitionDevicePath(const LpMetadata& metadata,
+static bool GetPhysicalPartitionDevicePath(const CreateLogicalPartitionParams& params,
                                            const LpMetadataBlockDevice& block_device,
-                                           const std::string& super_device,
-                                           std::string* result) {
-    // Note: device-mapper will not accept symlinks, so we must use realpath
-    // here.
-    std::string name = GetBlockDevicePartitionName(block_device);
-    std::string path = "/dev/block/by-name/" + name;
+                                           const std::string& super_device, std::string* result) {
     // If the super device is the source of this block device's metadata,
     // make sure we use the correct super device (and not just "super",
     // which might not exist.)
-    if (GetMetadataSuperBlockDevice(metadata) == &block_device) {
-        path = super_device;
+    std::string name = GetBlockDevicePartitionName(block_device);
+    if (android::base::StartsWith(name, "dm-")) {
+        // Device-mapper nodes are not normally allowed in LpMetadata, since
+        // they are not consistent across reboots. However for the purposes of
+        // testing it's useful to handle them. For example when running DSUs,
+        // userdata is a device-mapper device, and some stacking will result
+        // when using libfiemap.
+        *result = "/dev/block/" + name;
+        return true;
     }
-    if (!android::base::Realpath(path, result)) {
-        PERROR << "realpath: " << path;
-        return false;
+
+    auto opener = params.partition_opener;
+    std::string dev_string = opener->GetDeviceString(name);
+    if (GetMetadataSuperBlockDevice(*params.metadata) == &block_device) {
+        dev_string = opener->GetDeviceString(super_device);
+    }
+
+    // Note: device-mapper will not accept symlinks, so we must use realpath
+    // here. If the device string is a major:minor sequence, we don't need to
+    // to call Realpath (it would not work anyway).
+    if (android::base::StartsWith(dev_string, "/")) {
+        if (!android::base::Realpath(dev_string, result)) {
+            PERROR << "realpath: " << dev_string;
+            return false;
+        }
+    } else {
+        *result = dev_string;
     }
     return true;
 }
 
-static bool CreateDmTable(const LpMetadata& metadata, const LpMetadataPartition& partition,
-                          const std::string& super_device, DmTable* table) {
+bool CreateDmTableInternal(const CreateLogicalPartitionParams& params, DmTable* table) {
+    const auto& super_device = params.block_device;
+
     uint64_t sector = 0;
-    for (size_t i = 0; i < partition.num_extents; i++) {
-        const auto& extent = metadata.extents[partition.first_extent_index + i];
+    for (size_t i = 0; i < params.partition->num_extents; i++) {
+        const auto& extent = params.metadata->extents[params.partition->first_extent_index + i];
         std::unique_ptr<DmTarget> target;
         switch (extent.target_type) {
             case LP_TARGET_TYPE_ZERO:
                 target = std::make_unique<DmTargetZero>(sector, extent.num_sectors);
                 break;
             case LP_TARGET_TYPE_LINEAR: {
-                const auto& block_device = metadata.block_devices[extent.target_source];
-                std::string path;
-                if (!GetPhysicalPartitionDevicePath(metadata, block_device, super_device, &path)) {
+                const auto& block_device = params.metadata->block_devices[extent.target_source];
+                std::string dev_string;
+                if (!GetPhysicalPartitionDevicePath(params, block_device, super_device,
+                                                    &dev_string)) {
                     LOG(ERROR) << "Unable to complete device-mapper table, unknown block device";
                     return false;
                 }
-                target = std::make_unique<DmTargetLinear>(sector, extent.num_sectors, path,
+                target = std::make_unique<DmTargetLinear>(sector, extent.num_sectors, dev_string,
                                                           extent.target_data);
                 break;
             }
@@ -102,40 +121,19 @@
         }
         sector += extent.num_sectors;
     }
-    if (partition.attributes & LP_PARTITION_ATTR_READONLY) {
+    if (params.partition->attributes & LP_PARTITION_ATTR_READONLY) {
         table->set_readonly(true);
     }
+    if (params.force_writable) {
+        table->set_readonly(false);
+    }
     return true;
 }
 
-static bool CreateLogicalPartition(const LpMetadata& metadata, const LpMetadataPartition& partition,
-                                   bool force_writable, const std::chrono::milliseconds& timeout_ms,
-                                   const std::string& super_device, std::string* path) {
-    DeviceMapper& dm = DeviceMapper::Instance();
-
-    DmTable table;
-    if (!CreateDmTable(metadata, partition, super_device, &table)) {
-        return false;
-    }
-    if (force_writable) {
-        table.set_readonly(false);
-    }
-    std::string name = GetPartitionName(partition);
-    if (!dm.CreateDevice(name, table)) {
-        return false;
-    }
-    if (!dm.GetDmDevicePathByName(name, path)) {
-        return false;
-    }
-    if (timeout_ms > std::chrono::milliseconds::zero()) {
-        if (!fs_mgr_wait_for_file(*path, timeout_ms, FileWaitMode::Exists)) {
-            DestroyLogicalPartition(name, {});
-            LERROR << "Timed out waiting for device path: " << *path;
-            return false;
-        }
-    }
-    LINFO << "Created logical partition " << name << " on device " << *path;
-    return true;
+bool CreateDmTable(CreateLogicalPartitionParams params, DmTable* table) {
+    CreateLogicalPartitionParams::OwnedData owned_data;
+    if (!params.InitDefaults(&owned_data)) return false;
+    return CreateDmTableInternal(params, table);
 }
 
 bool CreateLogicalPartitions(const std::string& block_device) {
@@ -154,13 +152,24 @@
 }
 
 bool CreateLogicalPartitions(const LpMetadata& metadata, const std::string& super_device) {
+    CreateLogicalPartitionParams params = {
+            .block_device = super_device,
+            .metadata = &metadata,
+    };
     for (const auto& partition : metadata.partitions) {
         if (!partition.num_extents) {
             LINFO << "Skipping zero-length logical partition: " << GetPartitionName(partition);
             continue;
         }
-        std::string path;
-        if (!CreateLogicalPartition(metadata, partition, false, {}, super_device, &path)) {
+        if (partition.attributes & LP_PARTITION_ATTR_DISABLED) {
+            LINFO << "Skipping disabled partition: " << GetPartitionName(partition);
+            continue;
+        }
+
+        params.partition = &partition;
+
+        std::string ignore_path;
+        if (!CreateLogicalPartition(params, &ignore_path)) {
             LERROR << "Could not create logical partition: " << GetPartitionName(partition);
             return false;
         }
@@ -168,49 +177,98 @@
     return true;
 }
 
-bool CreateLogicalPartition(const std::string& block_device, const LpMetadata& metadata,
-                            const std::string& partition_name, bool force_writable,
-                            const std::chrono::milliseconds& timeout_ms, std::string* path) {
-    for (const auto& partition : metadata.partitions) {
-        if (GetPartitionName(partition) == partition_name) {
-            return CreateLogicalPartition(metadata, partition, force_writable, timeout_ms,
-                                          block_device, path);
-        }
-    }
-    LERROR << "Could not find any partition with name: " << partition_name;
-    return false;
-}
-
-bool CreateLogicalPartition(const std::string& block_device, uint32_t metadata_slot,
-                            const std::string& partition_name, bool force_writable,
-                            const std::chrono::milliseconds& timeout_ms, std::string* path) {
-    auto metadata = ReadMetadata(block_device.c_str(), metadata_slot);
-    if (!metadata) {
-        LOG(ERROR) << "Could not read partition table.";
-        return true;
-    }
-    return CreateLogicalPartition(block_device, *metadata.get(), partition_name, force_writable,
-                                  timeout_ms, path);
-}
-
-bool UnmapDevice(const std::string& name, const std::chrono::milliseconds& timeout_ms) {
-    DeviceMapper& dm = DeviceMapper::Instance();
-    std::string path;
-    if (timeout_ms > std::chrono::milliseconds::zero()) {
-        dm.GetDmDevicePathByName(name, &path);
-    }
-    if (!dm.DeleteDevice(name)) {
+bool CreateLogicalPartitionParams::InitDefaults(CreateLogicalPartitionParams::OwnedData* owned) {
+    if (block_device.empty()) {
+        LOG(ERROR) << "block_device is required for CreateLogicalPartition";
         return false;
     }
-    if (!path.empty() && !fs_mgr_wait_for_file(path, timeout_ms, FileWaitMode::DoesNotExist)) {
-        LERROR << "Timed out waiting for device path to unlink: " << path;
+
+    if (!partition_opener) {
+        owned->partition_opener = std::make_unique<PartitionOpener>();
+        partition_opener = owned->partition_opener.get();
+    }
+
+    // Read metadata if needed.
+    if (!metadata) {
+        if (!metadata_slot) {
+            LOG(ERROR) << "Either metadata or a metadata slot must be specified.";
+            return false;
+        }
+        auto slot = *metadata_slot;
+        if (owned->metadata = ReadMetadata(*partition_opener, block_device, slot);
+            !owned->metadata) {
+            LOG(ERROR) << "Could not read partition table for: " << block_device;
+            return false;
+        }
+        metadata = owned->metadata.get();
+    }
+
+    // Find the partition by name if needed.
+    if (!partition) {
+        for (const auto& metadata_partition : metadata->partitions) {
+            if (android::fs_mgr::GetPartitionName(metadata_partition) == partition_name) {
+                partition = &metadata_partition;
+                break;
+            }
+        }
+    }
+    if (!partition) {
+        LERROR << "Could not find any partition with name: " << partition_name;
+        return false;
+    }
+    if (partition_name.empty()) {
+        partition_name = android::fs_mgr::GetPartitionName(*partition);
+    } else if (partition_name != android::fs_mgr::GetPartitionName(*partition)) {
+        LERROR << "Inconsistent partition_name " << partition_name << " with partition "
+               << android::fs_mgr::GetPartitionName(*partition);
+        return false;
+    }
+
+    if (device_name.empty()) {
+        device_name = partition_name;
+    }
+
+    return true;
+}
+
+bool CreateLogicalPartition(CreateLogicalPartitionParams params, std::string* path) {
+    CreateLogicalPartitionParams::OwnedData owned_data;
+    if (!params.InitDefaults(&owned_data)) return false;
+
+    DmTable table;
+    if (!CreateDmTableInternal(params, &table)) {
+        return false;
+    }
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (!dm.CreateDevice(params.device_name, table, path, params.timeout_ms)) {
+        return false;
+    }
+    LINFO << "Created logical partition " << params.device_name << " on device " << *path;
+    return true;
+}
+
+std::string CreateLogicalPartitionParams::GetDeviceName() const {
+    if (!device_name.empty()) return device_name;
+    return GetPartitionName();
+}
+
+std::string CreateLogicalPartitionParams::GetPartitionName() const {
+    if (!partition_name.empty()) return partition_name;
+    if (partition) return android::fs_mgr::GetPartitionName(*partition);
+    return "<unknown partition>";
+}
+
+bool UnmapDevice(const std::string& name) {
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (!dm.DeleteDevice(name)) {
         return false;
     }
     return true;
 }
 
-bool DestroyLogicalPartition(const std::string& name, const std::chrono::milliseconds& timeout_ms) {
-    if (!UnmapDevice(name, timeout_ms)) {
+bool DestroyLogicalPartition(const std::string& name) {
+    if (!UnmapDevice(name)) {
         return false;
     }
     LINFO << "Unmapped logical partition " << name;
diff --git a/fs_mgr/fs_mgr_format.cpp b/fs_mgr/fs_mgr_format.cpp
index 1c6652a..fd7386d 100644
--- a/fs_mgr/fs_mgr_format.cpp
+++ b/fs_mgr/fs_mgr_format.cpp
@@ -24,6 +24,7 @@
 #include <cutils/partition_utils.h>
 #include <sys/mount.h>
 
+#include <android-base/properties.h>
 #include <android-base/unique_fd.h>
 #include <ext4_utils/ext4.h>
 #include <ext4_utils/ext4_utils.h>
@@ -57,7 +58,7 @@
 }
 
 static int format_ext4(const std::string& fs_blkdev, const std::string& fs_mnt_point,
-                       bool crypt_footer) {
+                       bool crypt_footer, bool needs_projid, bool needs_metadata_csum) {
     uint64_t dev_sz;
     int rc = 0;
 
@@ -72,12 +73,36 @@
     }
 
     std::string size_str = std::to_string(dev_sz / 4096);
-    const char* const mke2fs_args[] = {
-            "/system/bin/mke2fs", "-t",   "ext4", "-b", "4096", fs_blkdev.c_str(),
-            size_str.c_str(),     nullptr};
 
-    rc = android_fork_execvp_ext(arraysize(mke2fs_args), const_cast<char**>(mke2fs_args), NULL,
-                                 true, LOG_KLOG, true, nullptr, nullptr, 0);
+    std::vector<const char*> mke2fs_args = {"/system/bin/mke2fs", "-t", "ext4", "-b", "4096"};
+
+    // Project ID's require wider inodes. The Quotas themselves are enabled by tune2fs during boot.
+    if (needs_projid) {
+        mke2fs_args.push_back("-I");
+        mke2fs_args.push_back("512");
+    }
+    // casefolding is enabled via tune2fs during boot.
+
+    if (needs_metadata_csum) {
+        mke2fs_args.push_back("-O");
+        mke2fs_args.push_back("metadata_csum");
+        // tune2fs recommends to enable 64bit and extent:
+        //  Extents are not enabled.  The file extent tree can be checksummed,
+        //  whereas block maps cannot. Not enabling extents reduces the coverage
+        //  of metadata checksumming.  Re-run with -O extent to rectify.
+        //  64-bit filesystem support is not enabled.  The larger fields afforded
+        //  by this feature enable full-strength checksumming.  Run resize2fs -b to rectify.
+        mke2fs_args.push_back("-O");
+        mke2fs_args.push_back("64bit");
+        mke2fs_args.push_back("-O");
+        mke2fs_args.push_back("extent");
+    }
+
+    mke2fs_args.push_back(fs_blkdev.c_str());
+    mke2fs_args.push_back(size_str.c_str());
+
+    rc = logwrap_fork_execvp(mke2fs_args.size(), mke2fs_args.data(), nullptr, false, LOG_KLOG,
+                             false, nullptr);
     if (rc) {
         LERROR << "mke2fs returned " << rc;
         return rc;
@@ -86,8 +111,8 @@
     const char* const e2fsdroid_args[] = {
             "/system/bin/e2fsdroid", "-e", "-a", fs_mnt_point.c_str(), fs_blkdev.c_str(), nullptr};
 
-    rc = android_fork_execvp_ext(arraysize(e2fsdroid_args), const_cast<char**>(e2fsdroid_args),
-                                 NULL, true, LOG_KLOG, true, nullptr, nullptr, 0);
+    rc = logwrap_fork_execvp(arraysize(e2fsdroid_args), e2fsdroid_args, nullptr, false, LOG_KLOG,
+                             false, nullptr);
     if (rc) {
         LERROR << "e2fsdroid returned " << rc;
     }
@@ -95,7 +120,8 @@
     return rc;
 }
 
-static int format_f2fs(const std::string& fs_blkdev, uint64_t dev_sz, bool crypt_footer) {
+static int format_f2fs(const std::string& fs_blkdev, uint64_t dev_sz, bool crypt_footer,
+                       bool needs_projid, bool needs_casefold) {
     if (!dev_sz) {
         int rc = get_dev_sz(fs_blkdev, &dev_sz);
         if (rc) {
@@ -109,27 +135,41 @@
     }
 
     std::string size_str = std::to_string(dev_sz / 4096);
-    // clang-format off
-    const char* const args[] = {
-        "/system/bin/make_f2fs",
-        "-g", "android",
-        fs_blkdev.c_str(),
-        size_str.c_str(),
-        nullptr
-    };
-    // clang-format on
 
-    return android_fork_execvp_ext(arraysize(args), const_cast<char**>(args), NULL, true,
-                                   LOG_KLOG, true, nullptr, nullptr, 0);
+    std::vector<const char*> args = {"/system/bin/make_f2fs", "-g", "android"};
+    if (needs_projid) {
+        args.push_back("-O");
+        args.push_back("project_quota,extra_attr");
+    }
+    if (needs_casefold) {
+        args.push_back("-O");
+        args.push_back("casefold");
+        args.push_back("-C");
+        args.push_back("utf8");
+    }
+    args.push_back(fs_blkdev.c_str());
+    args.push_back(size_str.c_str());
+
+    return logwrap_fork_execvp(args.size(), args.data(), nullptr, false, LOG_KLOG, false, nullptr);
 }
 
 int fs_mgr_do_format(const FstabEntry& entry, bool crypt_footer) {
     LERROR << __FUNCTION__ << ": Format " << entry.blk_device << " as '" << entry.fs_type << "'";
 
+    bool needs_casefold = false;
+    bool needs_projid = false;
+
+    if (entry.mount_point == "/data") {
+        needs_casefold = android::base::GetBoolProperty("external_storage.casefold.enabled", false);
+        needs_projid = android::base::GetBoolProperty("external_storage.projid.enabled", false);
+    }
+
     if (entry.fs_type == "f2fs") {
-        return format_f2fs(entry.blk_device, entry.length, crypt_footer);
+        return format_f2fs(entry.blk_device, entry.length, crypt_footer, needs_projid,
+                           needs_casefold);
     } else if (entry.fs_type == "ext4") {
-        return format_ext4(entry.blk_device, entry.mount_point, crypt_footer);
+        return format_ext4(entry.blk_device, entry.mount_point, crypt_footer, needs_projid,
+                           entry.fs_mgr_flags.ext_meta_csum);
     } else {
         LERROR << "File system type '" << entry.fs_type << "' is not supported";
         return -EINVAL;
diff --git a/fs_mgr/fs_mgr_fstab.cpp b/fs_mgr/fs_mgr_fstab.cpp
index 22b0585..8a22078 100644
--- a/fs_mgr/fs_mgr_fstab.cpp
+++ b/fs_mgr/fs_mgr_fstab.cpp
@@ -30,15 +30,18 @@
 
 #include <android-base/file.h>
 #include <android-base/parseint.h>
+#include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <libgsi/libgsi.h>
 
 #include "fs_mgr_priv.h"
 
+using android::base::EndsWith;
 using android::base::ParseByteCount;
 using android::base::ParseInt;
 using android::base::ReadFileToString;
+using android::base::Readlink;
 using android::base::Split;
 using android::base::StartsWith;
 
@@ -46,7 +49,7 @@
 namespace fs_mgr {
 namespace {
 
-const std::string kDefaultAndroidDtDir("/proc/device-tree/firmware/android");
+constexpr char kDefaultAndroidDtDir[] = "/proc/device-tree/firmware/android";
 
 struct FlagList {
     const char *name;
@@ -98,58 +101,9 @@
     return false;
 }
 
-const std::array<const char*, 3> kFileContentsEncryptionMode = {
-        "aes-256-xts",
-        "adiantum",
-        "ice",
-};
-
-const std::array<const char*, 3> kFileNamesEncryptionMode = {
-        "aes-256-cts",
-        "aes-256-heh",
-        "adiantum",
-};
-
 void ParseFileEncryption(const std::string& arg, FstabEntry* entry) {
-    // The fileencryption flag is followed by an = and the mode of contents encryption, then
-    // optionally a and the mode of filenames encryption (defaults to aes-256-cts).  Get it and
-    // return it.
     entry->fs_mgr_flags.file_encryption = true;
-
-    auto parts = Split(arg, ":");
-    if (parts.empty() || parts.size() > 2) {
-        LWARNING << "Warning: fileencryption= flag malformed: " << arg;
-        return;
-    }
-
-    // Alias for backwards compatibility.
-    if (parts[0] == "software") {
-        parts[0] = "aes-256-xts";
-    }
-
-    if (std::find(kFileContentsEncryptionMode.begin(), kFileContentsEncryptionMode.end(),
-                  parts[0]) == kFileContentsEncryptionMode.end()) {
-        LWARNING << "fileencryption= flag malformed, file contents encryption mode not found: "
-                 << arg;
-        return;
-    }
-
-    entry->file_contents_mode = parts[0];
-
-    if (parts.size() == 2) {
-        if (std::find(kFileNamesEncryptionMode.begin(), kFileNamesEncryptionMode.end(), parts[1]) ==
-            kFileNamesEncryptionMode.end()) {
-            LWARNING << "fileencryption= flag malformed, file names encryption mode not found: "
-                     << arg;
-            return;
-        }
-
-        entry->file_names_mode = parts[1];
-    } else if (entry->file_contents_mode == "adiantum") {
-        entry->file_names_mode = "adiantum";
-    } else {
-        entry->file_names_mode = "aes-256-cts";
-    }
+    entry->encryption_options = arg;
 }
 
 bool SetMountFlag(const std::string& flag, FstabEntry* entry) {
@@ -171,6 +125,18 @@
                 fs_options.append(",");  // appends a comma if not the first
             }
             fs_options.append(flag);
+
+            if (entry->fs_type == "f2fs" && StartsWith(flag, "reserve_root=")) {
+                std::string arg;
+                if (auto equal_sign = flag.find('='); equal_sign != std::string::npos) {
+                    arg = flag.substr(equal_sign + 1);
+                }
+                if (!ParseInt(arg, &entry->reserved_size)) {
+                    LWARNING << "Warning: reserve_root= flag malformed: " << arg;
+                } else {
+                    entry->reserved_size <<= 12;
+                }
+            }
         }
     }
     entry->fs_options = std::move(fs_options);
@@ -211,6 +177,7 @@
         CheckFlag("first_stage_mount", first_stage_mount);
         CheckFlag("slotselect_other", slot_select_other);
         CheckFlag("fsverity", fs_verity);
+        CheckFlag("metadata_csum", ext_meta_csum);
 
 #undef CheckFlag
 
@@ -246,7 +213,7 @@
             }
         } else if (StartsWith(flag, "swapprio=")) {
             if (!ParseInt(arg, &entry->swap_prio)) {
-                LWARNING << "Warning: length= flag malformed: " << arg;
+                LWARNING << "Warning: swapprio= flag malformed: " << arg;
             }
         } else if (StartsWith(flag, "zramsize=")) {
             if (!arg.empty() && arg.back() == '%') {
@@ -262,10 +229,6 @@
                     LWARNING << "Warning: zramsize= flag malformed: " << arg;
                 }
             }
-        } else if (StartsWith(flag, "verify=")) {
-            // If the verify flag is followed by an = and the location for the verity state.
-            entry->fs_mgr_flags.verify = true;
-            entry->verity_loc = arg;
         } else if (StartsWith(flag, "forceencrypt=")) {
             // The forceencrypt flag is followed by an = and the location of the keys.
             entry->fs_mgr_flags.force_crypt = true;
@@ -277,8 +240,7 @@
             // return it.
             entry->fs_mgr_flags.force_fde_or_fbe = true;
             entry->key_loc = arg;
-            entry->file_contents_mode = "aes-256-xts";
-            entry->file_names_mode = "aes-256-cts";
+            entry->encryption_options = "aes-256-xts:aes-256-cts";
         } else if (StartsWith(flag, "max_comp_streams=")) {
             if (!ParseInt(arg, &entry->max_comp_streams)) {
                 LWARNING << "Warning: max_comp_streams= flag malformed: " << arg;
@@ -316,19 +278,17 @@
             entry->vbmeta_partition = arg;
         } else if (StartsWith(flag, "keydirectory=")) {
             // The metadata flag is followed by an = and the directory for the keys.
-            entry->key_dir = arg;
+            entry->metadata_key_dir = arg;
+        } else if (StartsWith(flag, "metadata_encryption=")) {
+            // Specify the cipher and flags to use for metadata encryption
+            entry->metadata_encryption = arg;
         } else if (StartsWith(flag, "sysfs_path=")) {
             // The path to trigger device gc by idle-maint of vold.
             entry->sysfs_path = arg;
-        } else if (StartsWith(flag, "zram_loopback_path=")) {
-            // The path to use loopback for zram.
-            entry->zram_loopback_path = arg;
-        } else if (StartsWith(flag, "zram_loopback_size=")) {
-            if (!ParseByteCount(arg, &entry->zram_loopback_size)) {
-                LWARNING << "Warning: zram_loopback_size= flag malformed: " << arg;
+        } else if (StartsWith(flag, "zram_backingdev_size=")) {
+            if (!ParseByteCount(arg, &entry->zram_backingdev_size)) {
+                LWARNING << "Warning: zram_backingdev_size= flag malformed: " << arg;
             }
-        } else if (StartsWith(flag, "zram_backing_dev_path=")) {
-            entry->zram_backing_dev_path = arg;
         } else {
             LWARNING << "Warning: unknown flag: " << flag;
         }
@@ -442,16 +402,17 @@
     return fstab_result;
 }
 
-// Identify path to fstab file. Lookup is based on pattern fstab.<hardware>,
-// fstab.<hardware.platform> in folders /odm/etc, vendor/etc, or /.
+// Identify path to fstab file. Lookup is based on pattern
+// fstab.<fstab_suffix>, fstab.<hardware>, fstab.<hardware.platform> in
+// folders /odm/etc, vendor/etc, or /.
 std::string GetFstabPath() {
-    for (const char* prop : {"hardware", "hardware.platform"}) {
-        std::string hw;
+    for (const char* prop : {"fstab_suffix", "hardware", "hardware.platform"}) {
+        std::string suffix;
 
-        if (!fs_mgr_get_boot_config(prop, &hw)) continue;
+        if (!fs_mgr_get_boot_config(prop, &suffix)) continue;
 
         for (const char* prefix : {"/odm/etc/fstab.", "/vendor/etc/fstab.", "/fstab."}) {
-            std::string fstab_path = prefix + hw;
+            std::string fstab_path = prefix + suffix;
             if (access(fstab_path.c_str(), F_OK) == 0) {
                 return fstab_path;
             }
@@ -590,7 +551,7 @@
     return boot_devices;
 }
 
-FstabEntry BuildGsiUserdataFstabEntry() {
+FstabEntry BuildDsuUserdataFstabEntry() {
     constexpr uint32_t kFlags = MS_NOATIME | MS_NOSUID | MS_NODEV;
 
     FstabEntry userdata = {
@@ -619,7 +580,11 @@
     return false;
 }
 
-void TransformFstabForGsi(Fstab* fstab) {
+}  // namespace
+
+void TransformFstabForDsu(Fstab* fstab, const std::vector<std::string>& dsu_partitions) {
+    static constexpr char kDsuKeysDir[] = "/avb";
+    // Convert userdata
     // Inherit fstab properties for userdata.
     FstabEntry userdata;
     if (FstabEntry* entry = GetEntryForMountPoint(fstab, "/data")) {
@@ -627,23 +592,84 @@
         userdata.blk_device = "userdata_gsi";
         userdata.fs_mgr_flags.logical = true;
         userdata.fs_mgr_flags.formattable = true;
-        if (!userdata.key_dir.empty()) {
-            userdata.key_dir += "/gsi";
+        if (!userdata.metadata_key_dir.empty()) {
+            userdata.metadata_key_dir += "/gsi";
         }
     } else {
-        userdata = BuildGsiUserdataFstabEntry();
-    }
-
-    if (EraseFstabEntry(fstab, "/system")) {
-        fstab->emplace_back(BuildGsiSystemFstabEntry());
+        userdata = BuildDsuUserdataFstabEntry();
     }
 
     if (EraseFstabEntry(fstab, "/data")) {
         fstab->emplace_back(userdata);
     }
+
+    // Convert others
+    for (auto&& partition : dsu_partitions) {
+        if (!EndsWith(partition, gsi::kDsuPostfix)) {
+            continue;
+        }
+        // userdata has been handled
+        if (StartsWith(partition, "user")) {
+            continue;
+        }
+        // dsu_partition_name = corresponding_partition_name + kDsuPostfix
+        // e.g.
+        //    system_gsi for system
+        //    product_gsi for product
+        //    vendor_gsi for vendor
+        std::string lp_name = partition.substr(0, partition.length() - strlen(gsi::kDsuPostfix));
+        std::string mount_point = "/" + lp_name;
+        std::vector<FstabEntry*> entries = GetEntriesForMountPoint(fstab, mount_point);
+        if (entries.empty()) {
+            FstabEntry entry = {
+                    .blk_device = partition,
+                    // .logical_partition_name is required to look up AVB Hashtree descriptors.
+                    .logical_partition_name = "system",
+                    .mount_point = mount_point,
+                    .fs_type = "ext4",
+                    .flags = MS_RDONLY,
+                    .fs_options = "barrier=1",
+                    .avb_keys = kDsuKeysDir,
+            };
+            entry.fs_mgr_flags.wait = true;
+            entry.fs_mgr_flags.logical = true;
+            entry.fs_mgr_flags.first_stage_mount = true;
+        } else {
+            // If the corresponding partition exists, transform all its Fstab
+            // by pointing .blk_device to the DSU partition.
+            for (auto&& entry : entries) {
+                entry->blk_device = partition;
+                // AVB keys for DSU should always be under kDsuKeysDir.
+                entry->avb_keys += kDsuKeysDir;
+            }
+            // Make sure the ext4 is included to support GSI.
+            auto partition_ext4 =
+                    std::find_if(fstab->begin(), fstab->end(), [&](const auto& entry) {
+                        return entry.mount_point == mount_point && entry.fs_type == "ext4";
+                    });
+            if (partition_ext4 == fstab->end()) {
+                auto new_entry = *GetEntryForMountPoint(fstab, mount_point);
+                new_entry.fs_type = "ext4";
+                fstab->emplace_back(new_entry);
+            }
+        }
+    }
 }
 
-}  // namespace
+void EnableMandatoryFlags(Fstab* fstab) {
+    // Devices launched in R and after should enable fs_verity on userdata. The flag causes tune2fs
+    // to enable the feature. A better alternative would be to enable on mkfs at the beginning.
+    if (android::base::GetIntProperty("ro.product.first_api_level", 0) >= 30) {
+        std::vector<FstabEntry*> data_entries = GetEntriesForMountPoint(fstab, "/data");
+        for (auto&& entry : data_entries) {
+            // Besides ext4, f2fs is also supported. But the image is already created with verity
+            // turned on when it was first introduced.
+            if (entry->fs_type == "ext4") {
+                entry->fs_mgr_flags.fs_verity = true;
+            }
+        }
+    }
+}
 
 bool ReadFstabFromFile(const std::string& path, Fstab* fstab) {
     auto fstab_file = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
@@ -659,10 +685,15 @@
         return false;
     }
     if (!is_proc_mounts && !access(android::gsi::kGsiBootedIndicatorFile, F_OK)) {
-        TransformFstabForGsi(fstab);
+        std::string lp_names;
+        ReadFileToString(gsi::kGsiLpNamesFile, &lp_names);
+        TransformFstabForDsu(fstab, Split(lp_names, ","));
     }
 
+#ifndef NO_SKIP_MOUNT
     SkipMountingPartitions(fstab);
+#endif
+    EnableMandatoryFlags(fstab);
 
     return true;
 }
@@ -691,18 +722,22 @@
         return false;
     }
 
+#ifndef NO_SKIP_MOUNT
     SkipMountingPartitions(fstab);
+#endif
 
     return true;
 }
 
-// For GSI to skip mounting /product and /product_services, until there are
-// well-defined interfaces between them and /system. Otherwise, the GSI flashed
-// on /system might not be able to work with /product and /product_services.
-// When they're skipped here, /system/product and /system/product_services in
-// GSI will be used.
+#ifndef NO_SKIP_MOUNT
+// For GSI to skip mounting /product and /system_ext, until there are well-defined interfaces
+// between them and /system. Otherwise, the GSI flashed on /system might not be able to work with
+// device-specific /product and /system_ext. skip_mount.cfg belongs to system_ext partition because
+// only common files for all targets can be put into system partition. It is under
+// /system/system_ext because GSI is a single system.img that includes the contents of system_ext
+// partition and product partition under /system/system_ext and /system/product, respectively.
 bool SkipMountingPartitions(Fstab* fstab) {
-    constexpr const char kSkipMountConfig[] = "/system/etc/init/config/skip_mount.cfg";
+    constexpr const char kSkipMountConfig[] = "/system/system_ext/etc/init/config/skip_mount.cfg";
 
     std::string skip_config;
     auto save_errno = errno;
@@ -719,12 +754,14 @@
                                  [&skip_mount_point](const auto& entry) {
                                      return entry.mount_point == skip_mount_point;
                                  });
+        if (it == fstab->end()) continue;
         fstab->erase(it, fstab->end());
         LOG(INFO) << "Skip mounting partition: " << skip_mount_point;
     }
 
     return true;
 }
+#endif
 
 // Loads the fstab file and combines with fstab entries passed in from device tree.
 bool ReadDefaultFstab(Fstab* fstab) {
@@ -769,6 +806,21 @@
     return nullptr;
 }
 
+std::vector<FstabEntry*> GetEntriesForMountPoint(Fstab* fstab, const std::string& path) {
+    std::vector<FstabEntry*> entries;
+    if (fstab == nullptr) {
+        return entries;
+    }
+
+    for (auto& entry : *fstab) {
+        if (entry.mount_point == path) {
+            entries.emplace_back(&entry);
+        }
+    }
+
+    return entries;
+}
+
 std::set<std::string> GetBootDevices() {
     // First check the kernel commandline, then try the device tree otherwise
     std::string dt_file_name = get_android_dt_dir() + "/boot_devices";
@@ -788,29 +840,14 @@
     return ExtraBootDevices(fstab);
 }
 
-FstabEntry BuildGsiSystemFstabEntry() {
-    // .logical_partition_name is required to look up AVB Hashtree descriptors.
-    FstabEntry system = {.blk_device = "system_gsi",
-                         .mount_point = "/system",
-                         .fs_type = "ext4",
-                         .flags = MS_RDONLY,
-                         .fs_options = "barrier=1",
-                         // could add more keys separated by ':'.
-                         .avb_keys =
-                                 "/avb/q-gsi.avbpubkey:/avb/q-developer-gsi.avbpubkey:"
-                                 "/avb/r-developer-gsi.avbpubkey:/avb/s-developer-gsi.avbpubkey",
-                         .logical_partition_name = "system"};
-    system.fs_mgr_flags.wait = true;
-    system.fs_mgr_flags.logical = true;
-    system.fs_mgr_flags.first_stage_mount = true;
-    return system;
-}
-
 std::string GetVerityDeviceName(const FstabEntry& entry) {
     std::string base_device;
     if (entry.mount_point == "/") {
-        // In AVB, the dm device name is vroot instead of system.
-        base_device = entry.fs_mgr_flags.avb ? "vroot" : "system";
+        // When using system-as-root, the device name is fixed as "vroot".
+        if (entry.fs_mgr_flags.avb) {
+            return "vroot";
+        }
+        base_device = "system";
     } else {
         base_device = android::base::Basename(entry.mount_point);
     }
diff --git a/fs_mgr/fs_mgr_overlayfs.cpp b/fs_mgr/fs_mgr_overlayfs.cpp
index f21d529..1fa1aa1 100644
--- a/fs_mgr/fs_mgr_overlayfs.cpp
+++ b/fs_mgr/fs_mgr_overlayfs.cpp
@@ -43,19 +43,26 @@
 #include <android-base/unique_fd.h>
 #include <ext4_utils/ext4_utils.h>
 #include <fs_mgr.h>
+#include <fs_mgr/file_wait.h>
 #include <fs_mgr_dm_linear.h>
 #include <fs_mgr_overlayfs.h>
 #include <fstab/fstab.h>
 #include <libdm/dm.h>
+#include <libfiemap/image_manager.h>
 #include <libgsi/libgsi.h>
 #include <liblp/builder.h>
 #include <liblp/liblp.h>
+#include <storage_literals/storage_literals.h>
 
 #include "fs_mgr_priv.h"
+#include "libfiemap/utility.h"
 
 using namespace std::literals;
 using namespace android::dm;
 using namespace android::fs_mgr;
+using namespace android::storage_literals;
+using android::fiemap::FilesystemHasReliablePinning;
+using android::fiemap::IImageManager;
 
 namespace {
 
@@ -103,6 +110,14 @@
     return false;
 }
 
+namespace android {
+namespace fs_mgr {
+
+void MapScratchPartitionIfNeeded(Fstab*,
+                                 const std::function<bool(const std::set<std::string>&)>&) {}
+}  // namespace fs_mgr
+}  // namespace android
+
 #else  // ALLOW_ADBD_DISABLE_VERITY == 0
 
 namespace {
@@ -132,7 +147,7 @@
     return ret | !rmdir(test_directory.c_str());
 }
 
-// At less than 1% free space return value of false,
+// At less than 1% or 8MB of free space return value of false,
 // means we will try to wrap with overlayfs.
 bool fs_mgr_filesystem_has_space(const std::string& mount_point) {
     // If we have access issues to find out space remaining, return true
@@ -144,9 +159,42 @@
         return true;
     }
 
-    static constexpr int kPercentThreshold = 1;  // 1%
+    static constexpr int kPercentThreshold = 1;                       // 1%
+    static constexpr unsigned long kSizeThreshold = 8 * 1024 * 1024;  // 8MB
 
-    return (vst.f_bfree >= (vst.f_blocks * kPercentThreshold / 100));
+    return (vst.f_bfree >= (vst.f_blocks * kPercentThreshold / 100)) &&
+           (vst.f_bfree * vst.f_bsize) >= kSizeThreshold;
+}
+
+const auto kPhysicalDevice = "/dev/block/by-name/"s;
+constexpr char kScratchImageMetadata[] = "/metadata/gsi/remount/lp_metadata";
+
+// Note: this is meant only for recovery/first-stage init.
+bool ScratchIsOnData() {
+    return fs_mgr_access(kScratchImageMetadata);
+}
+
+bool fs_mgr_update_blk_device(FstabEntry* entry) {
+    if (entry->fs_mgr_flags.logical) {
+        fs_mgr_update_logical_partition(entry);
+    }
+    if (fs_mgr_access(entry->blk_device)) {
+        return true;
+    }
+    if (entry->blk_device != "/dev/root") {
+        return false;
+    }
+
+    // special case for system-as-root (taimen and others)
+    auto blk_device = kPhysicalDevice + "system";
+    if (!fs_mgr_access(blk_device)) {
+        blk_device += fs_mgr_get_slot_suffix();
+        if (!fs_mgr_access(blk_device)) {
+            return false;
+        }
+    }
+    entry->blk_device = blk_device;
+    return true;
 }
 
 bool fs_mgr_overlayfs_enabled(FstabEntry* entry) {
@@ -156,19 +204,19 @@
     if (!fs_mgr_filesystem_has_space(entry->mount_point)) {
         return true;
     }
-    if (entry->fs_mgr_flags.logical) {
-        fs_mgr_update_logical_partition(entry);
+
+    // blk_device needs to be setup so we can check superblock.
+    // If we fail here, because during init first stage and have doubts.
+    if (!fs_mgr_update_blk_device(entry)) {
+        return true;
     }
+
+    // check if ext4 de-dupe
     auto save_errno = errno;
-    errno = 0;
     auto has_shared_blocks = fs_mgr_has_shared_blocks(entry->mount_point, entry->blk_device);
     if (!has_shared_blocks && (entry->mount_point == "/system")) {
         has_shared_blocks = fs_mgr_has_shared_blocks("/", entry->blk_device);
     }
-    // special case for first stage init for system as root (taimen)
-    if (!has_shared_blocks && (errno == ENOENT) && (entry->blk_device == "/dev/root")) {
-        has_shared_blocks = true;
-    }
     errno = save_errno;
     return has_shared_blocks;
 }
@@ -387,8 +435,6 @@
     return SlotNumberForSlotSuffix(fs_mgr_get_slot_suffix());
 }
 
-const auto kPhysicalDevice = "/dev/block/by-name/"s;
-
 std::string fs_mgr_overlayfs_super_device(uint32_t slot_number) {
     return kPhysicalDevice + fs_mgr_get_super_partition_name(slot_number);
 }
@@ -414,27 +460,40 @@
     rmdir(kScratchMountPoint.c_str());
 }
 
-// reduce 'DM_DEV_STATUS failed for scratch: No such device or address' noise
-std::string scratch_device_cache;
-
 bool fs_mgr_overlayfs_teardown_scratch(const std::string& overlay, bool* change) {
     // umount and delete kScratchMountPoint storage if we have logical partitions
     if (overlay != kScratchMountPoint) return true;
-    scratch_device_cache.erase();
-    auto slot_number = fs_mgr_overlayfs_slot_number();
-    auto super_device = fs_mgr_overlayfs_super_device(slot_number);
-    if (!fs_mgr_rw_access(super_device)) return true;
 
     auto save_errno = errno;
     if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) {
         fs_mgr_overlayfs_umount_scratch();
     }
+
+    const auto partition_name = android::base::Basename(kScratchMountPoint);
+
+    auto images = IImageManager::Open("remount", 10s);
+    if (images && images->BackingImageExists(partition_name)) {
+#if defined __ANDROID_RECOVERY__
+        if (!images->DisableImage(partition_name)) {
+            return false;
+        }
+#else
+        if (!images->UnmapImageIfExists(partition_name) ||
+            !images->DeleteBackingImage(partition_name)) {
+            return false;
+        }
+#endif
+    }
+
+    auto slot_number = fs_mgr_overlayfs_slot_number();
+    auto super_device = fs_mgr_overlayfs_super_device(slot_number);
+    if (!fs_mgr_rw_access(super_device)) return true;
+
     auto builder = MetadataBuilder::New(super_device, slot_number);
     if (!builder) {
         errno = save_errno;
         return true;
     }
-    const auto partition_name = android::base::Basename(kScratchMountPoint);
     if (builder->FindPartition(partition_name) == nullptr) {
         errno = save_errno;
         return true;
@@ -443,7 +502,7 @@
     auto metadata = builder->Export();
     if (metadata && UpdatePartitionTable(super_device, *metadata.get(), slot_number)) {
         if (change) *change = true;
-        if (!DestroyLogicalPartition(partition_name, 0s)) return false;
+        if (!DestroyLogicalPartition(partition_name)) return false;
     } else {
         LERROR << "delete partition " << overlay;
         return false;
@@ -687,7 +746,7 @@
     }
     report = report + ")=";
 
-    auto ret = mount("overlay", mount_point.c_str(), "overlay", MS_RDONLY | MS_RELATIME,
+    auto ret = mount("overlay", mount_point.c_str(), "overlay", MS_RDONLY | MS_NOATIME,
                      options.c_str());
     if (ret) {
         retval = false;
@@ -750,12 +809,13 @@
     entry.fs_type = mnt_type;
     if ((mnt_type == "f2fs") && !f2fs) entry.fs_type = "ext4";
     if ((mnt_type == "ext4") && !ext4) entry.fs_type = "f2fs";
-    entry.flags = MS_RELATIME;
+    entry.flags = MS_NOATIME;
     if (readonly) {
         entry.flags |= MS_RDONLY;
     } else {
         fs_mgr_set_blk_ro(device_path, false);
     }
+    entry.fs_mgr_flags.check = true;
     auto save_errno = errno;
     auto mounted = fs_mgr_do_mount_one(entry) == 0;
     if (!mounted) {
@@ -788,26 +848,49 @@
     return "auto";
 }
 
-std::string fs_mgr_overlayfs_scratch_device() {
-    if (!scratch_device_cache.empty()) return scratch_device_cache;
-
-    // Is this a multiple super device (retrofit)?
+// Note: we do not check access() here except for the super partition, since
+// in first-stage init we wouldn't have registed by-name symlinks for "other"
+// partitions that won't be mounted.
+static std::string GetPhysicalScratchDevice() {
     auto slot_number = fs_mgr_overlayfs_slot_number();
     auto super_device = fs_mgr_overlayfs_super_device(slot_number);
     auto path = fs_mgr_overlayfs_super_device(slot_number == 0);
-    if (super_device == path) {
-        // Create from within single super device;
-        auto& dm = DeviceMapper::Instance();
-        const auto partition_name = android::base::Basename(kScratchMountPoint);
-        if (!dm.GetDmDevicePathByName(partition_name, &path)) {
-            // non-DAP A/B device?
-            if (fs_mgr_access(super_device)) return "";
-            auto other_slot = fs_mgr_get_other_slot_suffix();
-            if (other_slot.empty()) return "";
-            path = kPhysicalDevice + "system" + other_slot;
-        }
+    if (super_device != path) {
+        return path;
     }
-    return scratch_device_cache = path;
+    if (fs_mgr_access(super_device)) {
+        // Do not try to use system_other on a DAP device.
+        return "";
+    }
+
+    auto other_slot = fs_mgr_get_other_slot_suffix();
+    if (!other_slot.empty()) {
+        return kPhysicalDevice + "system" + other_slot;
+    }
+    return "";
+}
+
+// This returns the scratch device that was detected during early boot (first-
+// stage init). If the device was created later, for example during setup for
+// the adb remount command, it can return an empty string since it does not
+// query ImageManager. (Note that ImageManager in first-stage init will always
+// use device-mapper, since /data is not available to use loop devices.)
+static std::string GetBootScratchDevice() {
+    auto& dm = DeviceMapper::Instance();
+
+    // If there is a scratch partition allocated in /data or on super, we
+    // automatically prioritize that over super_other or system_other.
+    // Some devices, for example, have a write-protected eMMC and the
+    // super partition cannot be used even if it exists.
+    std::string device;
+    auto partition_name = android::base::Basename(kScratchMountPoint);
+    if (dm.GetState(partition_name) != DmDeviceState::INVALID &&
+        dm.GetDmDevicePathByName(partition_name, &device)) {
+        return device;
+    }
+
+    // There is no dynamic scratch, so try and find a physical one.
+    return GetPhysicalScratchDevice();
 }
 
 bool fs_mgr_overlayfs_make_scratch(const std::string& scratch_device, const std::string& mnt_type) {
@@ -833,25 +916,40 @@
     return true;
 }
 
-bool fs_mgr_overlayfs_create_scratch(const Fstab& fstab, std::string* scratch_device,
-                                     bool* partition_exists, bool* change) {
-    *scratch_device = fs_mgr_overlayfs_scratch_device();
-    *partition_exists = fs_mgr_rw_access(*scratch_device);
-    auto partition_create = !*partition_exists;
-    // Do we need to create a logical "scratch" partition?
-    if (!partition_create && android::base::StartsWith(*scratch_device, kPhysicalDevice)) {
-        return true;
+static void TruncatePartitionsWithSuffix(MetadataBuilder* builder, const std::string& suffix) {
+    auto& dm = DeviceMapper::Instance();
+
+    // Remove <other> partitions
+    for (const auto& group : builder->ListGroups()) {
+        for (const auto& part : builder->ListPartitionsInGroup(group)) {
+            const auto& name = part->name();
+            if (!android::base::EndsWith(name, suffix)) {
+                continue;
+            }
+            if (dm.GetState(name) != DmDeviceState::INVALID && !DestroyLogicalPartition(name)) {
+                continue;
+            }
+            builder->ResizePartition(builder->FindPartition(name), 0);
+        }
     }
+}
+
+// Create or update a scratch partition within super.
+static bool CreateDynamicScratch(std::string* scratch_device, bool* partition_exists,
+                                 bool* change) {
+    const auto partition_name = android::base::Basename(kScratchMountPoint);
+
+    auto& dm = DeviceMapper::Instance();
+    *partition_exists = dm.GetState(partition_name) != DmDeviceState::INVALID;
+
+    auto partition_create = !*partition_exists;
     auto slot_number = fs_mgr_overlayfs_slot_number();
     auto super_device = fs_mgr_overlayfs_super_device(slot_number);
-    if (!fs_mgr_rw_access(super_device)) return false;
-    if (!fs_mgr_overlayfs_has_logical(fstab)) return false;
     auto builder = MetadataBuilder::New(super_device, slot_number);
     if (!builder) {
         LERROR << "open " << super_device << " metadata";
         return false;
     }
-    const auto partition_name = android::base::Basename(kScratchMountPoint);
     auto partition = builder->FindPartition(partition_name);
     *partition_exists = partition != nullptr;
     auto changed = false;
@@ -879,17 +977,26 @@
             // the adb remount overrides :-( .
             auto margin_size = uint64_t(3 * 256 * 1024);
             BlockDeviceInfo info;
-            if (builder->GetBlockDeviceInfo(partition_name, &info)) {
+            if (builder->GetBlockDeviceInfo(fs_mgr_get_super_partition_name(slot_number), &info)) {
                 margin_size = 3 * info.logical_block_size;
             }
             partition_size = std::max(std::min(kMinimumSize, partition_size - margin_size),
                                       partition_size / 2);
             if (partition_size > partition->size()) {
                 if (!builder->ResizePartition(partition, partition_size)) {
-                    LERROR << "resize " << partition_name;
-                    return false;
+                    // Try to free up space by deallocating partitions in the other slot.
+                    TruncatePartitionsWithSuffix(builder.get(), fs_mgr_get_other_slot_suffix());
+
+                    partition_size =
+                            builder->AllocatableSpace() - builder->UsedSpace() + partition->size();
+                    partition_size = std::max(std::min(kMinimumSize, partition_size - margin_size),
+                                              partition_size / 2);
+                    if (!builder->ResizePartition(partition, partition_size)) {
+                        LERROR << "resize " << partition_name;
+                        return false;
+                    }
                 }
-                if (!partition_create) DestroyLogicalPartition(partition_name, 10s);
+                if (!partition_create) DestroyLogicalPartition(partition_name);
                 changed = true;
                 *partition_exists = false;
             }
@@ -907,15 +1014,110 @@
     }
 
     if (changed || partition_create) {
-        if (!CreateLogicalPartition(super_device, slot_number, partition_name, true, 10s,
-                                    scratch_device))
+        CreateLogicalPartitionParams params = {
+                .block_device = super_device,
+                .metadata_slot = slot_number,
+                .partition_name = partition_name,
+                .force_writable = true,
+                .timeout_ms = 10s,
+        };
+        if (!CreateLogicalPartition(params, scratch_device)) {
             return false;
+        }
 
         if (change) *change = true;
+    } else if (scratch_device->empty()) {
+        *scratch_device = GetBootScratchDevice();
     }
     return true;
 }
 
+static bool CreateScratchOnData(std::string* scratch_device, bool* partition_exists, bool* change) {
+    *partition_exists = false;
+    *change = false;
+
+    auto images = IImageManager::Open("remount", 10s);
+    if (!images) {
+        return false;
+    }
+
+    auto partition_name = android::base::Basename(kScratchMountPoint);
+    if (images->GetMappedImageDevice(partition_name, scratch_device)) {
+        *partition_exists = true;
+        return true;
+    }
+
+    BlockDeviceInfo info;
+    PartitionOpener opener;
+    if (!opener.GetInfo(fs_mgr_get_super_partition_name(), &info)) {
+        LERROR << "could not get block device info for super";
+        return false;
+    }
+
+    *change = true;
+
+    // Note: calling RemoveDisabledImages here ensures that we do not race with
+    // clean_scratch_files and accidentally try to map an image that will be
+    // deleted.
+    if (!images->RemoveDisabledImages()) {
+        return false;
+    }
+    if (!images->BackingImageExists(partition_name)) {
+        static constexpr uint64_t kMinimumSize = 16_MiB;
+        static constexpr uint64_t kMaximumSize = 2_GiB;
+
+        uint64_t size = std::clamp(info.size / 2, kMinimumSize, kMaximumSize);
+        auto flags = IImageManager::CREATE_IMAGE_DEFAULT;
+
+        if (!images->CreateBackingImage(partition_name, size, flags)) {
+            LERROR << "could not create scratch image of " << size << " bytes";
+            return false;
+        }
+    }
+    if (!images->MapImageDevice(partition_name, 10s, scratch_device)) {
+        LERROR << "could not map scratch image";
+        return false;
+    }
+    return true;
+}
+
+static bool CanUseSuperPartition(const Fstab& fstab, bool* is_virtual_ab) {
+    auto slot_number = fs_mgr_overlayfs_slot_number();
+    auto super_device = fs_mgr_overlayfs_super_device(slot_number);
+    if (!fs_mgr_rw_access(super_device) || !fs_mgr_overlayfs_has_logical(fstab)) {
+        return false;
+    }
+    auto metadata = ReadMetadata(super_device, slot_number);
+    if (!metadata) {
+        return false;
+    }
+    *is_virtual_ab = !!(metadata->header.flags & LP_HEADER_FLAG_VIRTUAL_AB_DEVICE);
+    return true;
+}
+
+bool fs_mgr_overlayfs_create_scratch(const Fstab& fstab, std::string* scratch_device,
+                                     bool* partition_exists, bool* change) {
+    // Try a physical partition first.
+    *scratch_device = GetPhysicalScratchDevice();
+    if (!scratch_device->empty() && fs_mgr_rw_access(*scratch_device)) {
+        *partition_exists = true;
+        return true;
+    }
+
+    // If that fails, see if we can land on super.
+    bool is_virtual_ab;
+    if (CanUseSuperPartition(fstab, &is_virtual_ab)) {
+        bool can_use_data = false;
+        if (is_virtual_ab && FilesystemHasReliablePinning("/data", &can_use_data) && can_use_data) {
+            return CreateScratchOnData(scratch_device, partition_exists, change);
+        }
+        return CreateDynamicScratch(scratch_device, partition_exists, change);
+    }
+
+    errno = ENXIO;
+    return false;
+}
+
 // Create and mount kScratchMountPoint storage if we have logical partitions
 bool fs_mgr_overlayfs_setup_scratch(const Fstab& fstab, bool* change) {
     if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) return true;
@@ -950,19 +1152,6 @@
     return fs_mgr_overlayfs_mount_scratch(scratch_device, mnt_type);
 }
 
-bool fs_mgr_overlayfs_scratch_can_be_mounted(const std::string& scratch_device) {
-    if (scratch_device.empty()) return false;
-    if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) return false;
-    if (android::base::StartsWith(scratch_device, kPhysicalDevice)) return true;
-    if (fs_mgr_rw_access(scratch_device)) return true;
-    auto slot_number = fs_mgr_overlayfs_slot_number();
-    auto super_device = fs_mgr_overlayfs_super_device(slot_number);
-    if (!fs_mgr_rw_access(super_device)) return false;
-    auto builder = MetadataBuilder::New(super_device, slot_number);
-    if (!builder) return false;
-    return builder->FindPartition(android::base::Basename(kScratchMountPoint)) != nullptr;
-}
-
 bool fs_mgr_overlayfs_invalid() {
     if (fs_mgr_overlayfs_valid() == OverlayfsValidResult::kNotSupported) return true;
 
@@ -1004,6 +1193,30 @@
     return candidates;
 }
 
+static void TryMountScratch() {
+    // Note we get the boot scratch device here, which means if scratch was
+    // just created through ImageManager, this could fail. In practice this
+    // should not happen because "remount" detects this scenario (by checking
+    // if verity is still disabled, i.e. no reboot occurred), and skips calling
+    // fs_mgr_overlayfs_mount_all().
+    auto scratch_device = GetBootScratchDevice();
+    if (!fs_mgr_rw_access(scratch_device)) {
+        return;
+    }
+    if (!WaitForFile(scratch_device, 10s)) {
+        return;
+    }
+    const auto mount_type = fs_mgr_overlayfs_scratch_mount_type();
+    if (!fs_mgr_overlayfs_mount_scratch(scratch_device, mount_type, true /* readonly */)) {
+        return;
+    }
+    auto has_overlayfs_dir = fs_mgr_access(kScratchMountPoint + kOverlayTopDir);
+    fs_mgr_overlayfs_umount_scratch();
+    if (has_overlayfs_dir) {
+        fs_mgr_overlayfs_mount_scratch(scratch_device, mount_type);
+    }
+}
+
 bool fs_mgr_overlayfs_mount_all(Fstab* fstab) {
     auto ret = false;
     if (fs_mgr_overlayfs_invalid()) return ret;
@@ -1018,42 +1231,13 @@
         }
         if (scratch_can_be_mounted) {
             scratch_can_be_mounted = false;
-            auto scratch_device = fs_mgr_overlayfs_scratch_device();
-            if (fs_mgr_overlayfs_scratch_can_be_mounted(scratch_device) &&
-                fs_mgr_wait_for_file(scratch_device, 10s)) {
-                const auto mount_type = fs_mgr_overlayfs_scratch_mount_type();
-                if (fs_mgr_overlayfs_mount_scratch(scratch_device, mount_type,
-                                                   true /* readonly */)) {
-                    auto has_overlayfs_dir = fs_mgr_access(kScratchMountPoint + kOverlayTopDir);
-                    fs_mgr_overlayfs_umount_scratch();
-                    if (has_overlayfs_dir) {
-                        fs_mgr_overlayfs_mount_scratch(scratch_device, mount_type);
-                    }
-                }
-            }
+            TryMountScratch();
         }
         if (fs_mgr_overlayfs_mount(mount_point)) ret = true;
     }
     return ret;
 }
 
-std::vector<std::string> fs_mgr_overlayfs_required_devices(Fstab* fstab) {
-    if (fs_mgr_overlayfs_invalid()) return {};
-
-    if (GetEntryForMountPoint(fstab, kScratchMountPoint) != nullptr) {
-        return {};
-    }
-
-    for (const auto& entry : fs_mgr_overlayfs_candidate_list(*fstab)) {
-        if (fs_mgr_is_verity_enabled(entry)) continue;
-        if (fs_mgr_overlayfs_already_mounted(fs_mgr_mount_point(entry.mount_point))) continue;
-        auto device = fs_mgr_overlayfs_scratch_device();
-        if (!fs_mgr_overlayfs_scratch_can_be_mounted(device)) break;
-        return {device};
-    }
-    return {};
-}
-
 // Returns false if setup not permitted, errno set to last error.
 // If something is altered, set *change.
 bool fs_mgr_overlayfs_setup(const char* backing, const char* mount_point, bool* change,
@@ -1119,25 +1303,76 @@
     return ret;
 }
 
+static bool EnsureScratchMapped(std::string* device, bool* mapped) {
+    *mapped = false;
+    *device = GetBootScratchDevice();
+    if (!device->empty()) {
+        return true;
+    }
+
+    auto partition_name = android::base::Basename(kScratchMountPoint);
+
+    // Check for scratch on /data first, before looking for a modified super
+    // partition. We should only reach this code in recovery, because scratch
+    // would otherwise always be mapped.
+    auto images = IImageManager::Open("remount", 10s);
+    if (images && images->BackingImageExists(partition_name)) {
+        if (!images->MapImageDevice(partition_name, 10s, device)) {
+            return false;
+        }
+        *mapped = true;
+        return true;
+    }
+
+    // Avoid uart spam by first checking for a scratch partition.
+    auto metadata_slot = fs_mgr_overlayfs_slot_number();
+    auto super_device = fs_mgr_overlayfs_super_device(metadata_slot);
+    auto metadata = ReadCurrentMetadata(super_device);
+    if (!metadata) {
+        return false;
+    }
+
+    auto partition = FindPartition(*metadata.get(), partition_name);
+    if (!partition) {
+        return false;
+    }
+
+    CreateLogicalPartitionParams params = {
+            .block_device = super_device,
+            .metadata = metadata.get(),
+            .partition = partition,
+            .force_writable = true,
+            .timeout_ms = 10s,
+    };
+    if (!CreateLogicalPartition(params, device)) {
+        return false;
+    }
+    *mapped = true;
+    return true;
+}
+
+static void UnmapScratchDevice() {
+    // This should only be reachable in recovery, where scratch is not
+    // automatically mapped and therefore can be unmapped.
+    DestroyLogicalPartition(android::base::Basename(kScratchMountPoint));
+}
+
 // Returns false if teardown not permitted, errno set to last error.
 // If something is altered, set *change.
 bool fs_mgr_overlayfs_teardown(const char* mount_point, bool* change) {
     if (change) *change = false;
     auto ret = true;
+
     // If scratch exists, but is not mounted, lets gain access to clean
     // specific override entries.
     auto mount_scratch = false;
+    bool unmap = false;
     if ((mount_point != nullptr) && !fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) {
-        auto scratch_device = fs_mgr_overlayfs_scratch_device();
-        if (scratch_device.empty()) {
-            auto slot_number = fs_mgr_overlayfs_slot_number();
-            auto super_device = fs_mgr_overlayfs_super_device(slot_number);
-            const auto partition_name = android::base::Basename(kScratchMountPoint);
-            CreateLogicalPartition(super_device, slot_number, partition_name, true, 10s,
-                                   &scratch_device);
+        std::string scratch_device;
+        if (EnsureScratchMapped(&scratch_device, &unmap)) {
+            mount_scratch = fs_mgr_overlayfs_mount_scratch(scratch_device,
+                                                           fs_mgr_overlayfs_scratch_mount_type());
         }
-        mount_scratch = fs_mgr_overlayfs_mount_scratch(scratch_device,
-                                                       fs_mgr_overlayfs_scratch_mount_type());
     }
     for (const auto& overlay_mount_point : kOverlayMountPoints) {
         ret &= fs_mgr_overlayfs_teardown_one(
@@ -1156,8 +1391,12 @@
         PERROR << "teardown";
         ret = false;
     }
-    if (mount_scratch) fs_mgr_overlayfs_umount_scratch();
-
+    if (mount_scratch) {
+        fs_mgr_overlayfs_umount_scratch();
+    }
+    if (unmap) {
+        UnmapScratchDevice();
+    }
     return ret;
 }
 
@@ -1175,6 +1414,59 @@
     return false;
 }
 
+namespace android {
+namespace fs_mgr {
+
+void MapScratchPartitionIfNeeded(Fstab* fstab,
+                                 const std::function<bool(const std::set<std::string>&)>& init) {
+    if (fs_mgr_overlayfs_invalid()) {
+        return;
+    }
+    if (GetEntryForMountPoint(fstab, kScratchMountPoint) != nullptr) {
+        return;
+    }
+
+    bool want_scratch = false;
+    for (const auto& entry : fs_mgr_overlayfs_candidate_list(*fstab)) {
+        if (fs_mgr_is_verity_enabled(entry)) {
+            continue;
+        }
+        if (fs_mgr_overlayfs_already_mounted(fs_mgr_mount_point(entry.mount_point))) {
+            continue;
+        }
+        want_scratch = true;
+        break;
+    }
+    if (!want_scratch) {
+        return;
+    }
+
+    if (ScratchIsOnData()) {
+        if (auto images = IImageManager::Open("remount", 0ms)) {
+            images->MapAllImages(init);
+        }
+    }
+
+    // Physical or logical partitions will have already been mapped here,
+    // so just ensure /dev/block symlinks exist.
+    auto device = GetBootScratchDevice();
+    if (!device.empty()) {
+        init({android::base::Basename(device)});
+    }
+}
+
+void CleanupOldScratchFiles() {
+    if (!ScratchIsOnData()) {
+        return;
+    }
+    if (auto images = IImageManager::Open("remount", 0ms)) {
+        images->RemoveDisabledImages();
+    }
+}
+
+}  // namespace fs_mgr
+}  // namespace android
+
 #endif  // ALLOW_ADBD_DISABLE_VERITY != 0
 
 bool fs_mgr_has_shared_blocks(const std::string& mount_point, const std::string& dev) {
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index 70abf5b..c5e477c 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -88,26 +88,19 @@
 
 using namespace std::chrono_literals;
 
-enum class FileWaitMode { Exists, DoesNotExist };
-
-bool fs_mgr_wait_for_file(const std::string& filename,
-                          const std::chrono::milliseconds relative_timeout,
-                          FileWaitMode wait_mode = FileWaitMode::Exists);
-
 bool fs_mgr_set_blk_ro(const std::string& blockdev, bool readonly = true);
 bool fs_mgr_update_for_slotselect(android::fs_mgr::Fstab* fstab);
 bool fs_mgr_is_device_unlocked();
 const std::string& get_android_dt_dir();
 bool is_dt_compatible();
-int load_verity_state(const android::fs_mgr::FstabEntry& entry, int* mode);
 
 bool fs_mgr_is_ext4(const std::string& blk_device);
 bool fs_mgr_is_f2fs(const std::string& blk_device);
 
-bool fs_mgr_teardown_verity(android::fs_mgr::FstabEntry* fstab, bool wait);
+bool fs_mgr_teardown_verity(android::fs_mgr::FstabEntry* fstab);
 
 namespace android {
 namespace fs_mgr {
-bool UnmapDevice(const std::string& name, const std::chrono::milliseconds& timeout_ms);
+bool UnmapDevice(const std::string& name);
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/fs_mgr_remount.cpp b/fs_mgr/fs_mgr_remount.cpp
index 967631b..def1c21 100644
--- a/fs_mgr/fs_mgr_remount.cpp
+++ b/fs_mgr/fs_mgr_remount.cpp
@@ -24,6 +24,7 @@
 #include <unistd.h>
 
 #include <string>
+#include <thread>
 #include <utility>
 #include <vector>
 
@@ -31,6 +32,8 @@
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/strings.h>
+#include <android/os/IVold.h>
+#include <binder/IServiceManager.h>
 #include <bootloader_message/bootloader_message.h>
 #include <cutils/android_reboot.h>
 #include <fec/io.h>
@@ -80,38 +83,49 @@
     return &(*it);
 }
 
+auto verbose = false;
+
 void MyLogger(android::base::LogId id, android::base::LogSeverity severity, const char* tag,
               const char* file, unsigned int line, const char* message) {
-    static const char log_characters[] = "VD\0WEFF";
-    if (severity < sizeof(log_characters)) {
-        auto severity_char = log_characters[severity];
-        if (severity_char) fprintf(stderr, "%c ", severity_char);
+    if (verbose || severity == android::base::ERROR || message[0] != '[') {
+        fprintf(stderr, "%s\n", message);
     }
-    fprintf(stderr, "%s\n", message);
-
     static auto logd = android::base::LogdLogger();
     logd(id, severity, tag, file, line, message);
 }
 
-[[noreturn]] void reboot(bool dedupe) {
-    if (dedupe) {
-        LOG(INFO) << "The device will now reboot to recovery and attempt un-deduplication.";
+[[noreturn]] void reboot(bool overlayfs = false) {
+    if (overlayfs) {
+        LOG(INFO) << "Successfully setup overlayfs\nrebooting device";
     } else {
         LOG(INFO) << "Successfully disabled verity\nrebooting device";
     }
     ::sync();
-    android::base::SetProperty(ANDROID_RB_PROPERTY, dedupe ? "reboot,recovery" : "reboot,remount");
+    android::base::SetProperty(ANDROID_RB_PROPERTY, "reboot,remount");
     ::sleep(60);
     ::exit(0);  // SUCCESS
 }
 
+static android::sp<android::os::IVold> GetVold() {
+    while (true) {
+        if (auto sm = android::defaultServiceManager()) {
+            if (auto binder = sm->getService(android::String16("vold"))) {
+                if (auto vold = android::interface_cast<android::os::IVold>(binder)) {
+                    return vold;
+                }
+            }
+        }
+        std::this_thread::sleep_for(2s);
+    }
+}
+
 }  // namespace
 
-int main(int argc, char* argv[]) {
-    android::base::InitLogging(argv, MyLogger);
+using namespace std::chrono_literals;
 
+static int do_remount(int argc, char* argv[]) {
     enum {
-        SUCCESS,
+        SUCCESS = 0,
         NOT_USERDEBUG,
         BADARG,
         NOT_ROOT,
@@ -122,6 +136,9 @@
         BAD_OVERLAY,
         NO_MOUNTS,
         REMOUNT_FAILED,
+        MUST_REBOOT,
+        BINDER_ERROR,
+        CHECKPOINTING
     } retval = SUCCESS;
 
     // If somehow this executable is delivered on a "user" build, it can
@@ -139,10 +156,14 @@
             {"fstab", required_argument, nullptr, 'T'},
             {"help", no_argument, nullptr, 'h'},
             {"reboot", no_argument, nullptr, 'R'},
+            {"verbose", no_argument, nullptr, 'v'},
             {0, 0, nullptr, 0},
     };
-    for (int opt; (opt = ::getopt_long(argc, argv, "hRT:", longopts, nullptr)) != -1;) {
+    for (int opt; (opt = ::getopt_long(argc, argv, "hRT:v", longopts, nullptr)) != -1;) {
         switch (opt) {
+            case 'h':
+                usage(SUCCESS);
+                break;
             case 'R':
                 can_reboot = true;
                 break;
@@ -153,19 +174,19 @@
                 }
                 fstab_file = optarg;
                 break;
+            case 'v':
+                verbose = true;
+                break;
             default:
                 LOG(ERROR) << "Bad Argument -" << char(opt);
                 usage(BADARG);
                 break;
-            case 'h':
-                usage(SUCCESS);
-                break;
         }
     }
 
     // Make sure we are root.
     if (::getuid() != 0) {
-        LOG(ERROR) << "must be run as root";
+        LOG(ERROR) << "Not running as root. Try \"adb root\" first.";
         return NOT_ROOT;
     }
 
@@ -191,6 +212,22 @@
         return NO_FSTAB;
     }
 
+    if (android::base::GetBoolProperty("ro.virtual_ab.enabled", false) &&
+        !android::base::GetBoolProperty("ro.virtual_ab.retrofit", false)) {
+        // Virtual A/B devices can use /data as backing storage; make sure we're
+        // not checkpointing.
+        auto vold = GetVold();
+        bool checkpointing = false;
+        if (!vold->isCheckpointing(&checkpointing).isOk()) {
+            LOG(ERROR) << "Could not determine checkpointing status.";
+            return BINDER_ERROR;
+        }
+        if (checkpointing) {
+            LOG(ERROR) << "Cannot use remount when a checkpoint is in progress.";
+            return CHECKPOINTING;
+        }
+    }
+
     // Generate the list of supported overlayfs mount points.
     auto overlayfs_candidates = fs_mgr_overlayfs_candidate_list(fstab);
 
@@ -249,48 +286,38 @@
 
     // Check verity and optionally setup overlayfs backing.
     auto reboot_later = false;
-    auto uses_overlayfs = fs_mgr_overlayfs_valid() != OverlayfsValidResult::kNotSupported;
+    auto user_please_reboot_later = false;
+    auto setup_overlayfs = false;
     auto just_disabled_verity = false;
     for (auto it = partitions.begin(); it != partitions.end();) {
         auto& entry = *it;
         auto& mount_point = entry.mount_point;
         if (fs_mgr_is_verity_enabled(entry)) {
             retval = VERITY_PARTITION;
+            auto ret = false;
             if (android::base::GetProperty("ro.boot.vbmeta.device_state", "") != "locked") {
                 if (AvbOps* ops = avb_ops_user_new()) {
-                    auto ret = avb_user_verity_set(
+                    ret = avb_user_verity_set(
                             ops, android::base::GetProperty("ro.boot.slot_suffix", "").c_str(),
                             false);
                     avb_ops_user_free(ops);
-                    if (ret) {
-                        LOG(WARNING) << "Disabling verity for " << mount_point;
-                        just_disabled_verity = true;
-                        reboot_later = can_reboot;
-                        if (reboot_later) {
-                            // w/o overlayfs available, also check for dedupe
-                            if (!uses_overlayfs) {
-                                ++it;
-                                continue;
-                            }
-                            reboot(false);
-                        }
-                    } else if (fs_mgr_set_blk_ro(entry.blk_device, false)) {
-                        fec::io fh(entry.blk_device.c_str(), O_RDWR);
-                        if (fh && fh.set_verity_status(false)) {
-                            LOG(WARNING) << "Disabling verity for " << mount_point;
-                            just_disabled_verity = true;
-                            reboot_later = can_reboot;
-                            if (reboot_later && !uses_overlayfs) {
-                                ++it;
-                                continue;
-                            }
-                        }
-                    }
+                }
+                if (!ret && fs_mgr_set_blk_ro(entry.blk_device, false)) {
+                    fec::io fh(entry.blk_device.c_str(), O_RDWR);
+                    ret = fh && fh.set_verity_status(false);
+                }
+                if (ret) {
+                    LOG(WARNING) << "Disabling verity for " << mount_point;
+                    just_disabled_verity = true;
+                    reboot_later = can_reboot;
+                    user_please_reboot_later = true;
                 }
             }
-            LOG(ERROR) << "Skipping " << mount_point;
-            it = partitions.erase(it);
-            continue;
+            if (!ret) {
+                LOG(ERROR) << "Skipping " << mount_point << " for remount";
+                it = partitions.erase(it);
+                continue;
+            }
         }
 
         auto change = false;
@@ -298,6 +325,9 @@
         if (fs_mgr_overlayfs_setup(nullptr, mount_point.c_str(), &change, just_disabled_verity)) {
             if (change) {
                 LOG(INFO) << "Using overlayfs for " << mount_point;
+                reboot_later = can_reboot;
+                user_please_reboot_later = true;
+                setup_overlayfs = true;
             }
         } else if (errno) {
             PLOG(ERROR) << "Overlayfs setup for " << mount_point << " failed, skipping";
@@ -308,8 +338,12 @@
         ++it;
     }
 
-    if (partitions.empty()) {
-        if (reboot_later) reboot(false);
+    if (partitions.empty() || just_disabled_verity) {
+        if (reboot_later) reboot(setup_overlayfs);
+        if (user_please_reboot_later) {
+            LOG(INFO) << "Now reboot your device for settings to take effect";
+            return 0;
+        }
         LOG(WARNING) << "No partitions to remount";
         return retval;
     }
@@ -385,7 +419,18 @@
         retval = REMOUNT_FAILED;
     }
 
-    if (reboot_later) reboot(false);
+    if (reboot_later) reboot(setup_overlayfs);
+    if (user_please_reboot_later) {
+        LOG(INFO) << "Now reboot your device for settings to take effect";
+        return 0;
+    }
 
     return retval;
 }
+
+int main(int argc, char* argv[]) {
+    android::base::InitLogging(argv, MyLogger);
+    int result = do_remount(argc, argv);
+    printf("remount %s\n", result ? "failed" : "succeeded");
+    return result;
+}
diff --git a/fs_mgr/fs_mgr_roots.cpp b/fs_mgr/fs_mgr_roots.cpp
index 58ef9b6..1e65587 100644
--- a/fs_mgr/fs_mgr_roots.cpp
+++ b/fs_mgr/fs_mgr_roots.cpp
@@ -101,7 +101,9 @@
         }
     }
 
-    auto mounted = GetMountState(rec->mount_point);
+    const std::string mount_point = mount_pt.empty() ? rec->mount_point : mount_pt;
+
+    auto mounted = GetMountState(mount_point);
     if (mounted == MountState::ERROR) {
         return false;
     }
@@ -109,8 +111,6 @@
         return true;
     }
 
-    const std::string mount_point = mount_pt.empty() ? rec->mount_point : mount_pt;
-
     static const std::vector<std::string> supported_fs{"ext4", "squashfs", "vfat", "f2fs", "none"};
     if (std::find(supported_fs.begin(), supported_fs.end(), rec->fs_type) == supported_fs.end()) {
         LERROR << "unknown fs_type \"" << rec->fs_type << "\" for " << mount_point;
diff --git a/fs_mgr/fs_mgr_verity.cpp b/fs_mgr/fs_mgr_verity.cpp
index 3f09157..efa2180 100644
--- a/fs_mgr/fs_mgr_verity.cpp
+++ b/fs_mgr/fs_mgr_verity.cpp
@@ -35,6 +35,7 @@
 #include <android-base/unique_fd.h>
 #include <crypto_utils/android_pubkey.h>
 #include <cutils/properties.h>
+#include <fs_mgr/file_wait.h>
 #include <libdm/dm.h>
 #include <logwrap/logwrap.h>
 #include <openssl/obj_mac.h>
@@ -275,248 +276,6 @@
     return 0;
 }
 
-static int check_verity_restart(const char *fname)
-{
-    char buffer[VERITY_KMSG_BUFSIZE + 1];
-    int fd;
-    int rc = 0;
-    ssize_t size;
-    struct stat s;
-
-    fd = TEMP_FAILURE_RETRY(open(fname, O_RDONLY | O_CLOEXEC));
-
-    if (fd == -1) {
-        if (errno != ENOENT) {
-            PERROR << "Failed to open " << fname;
-        }
-        goto out;
-    }
-
-    if (fstat(fd, &s) == -1) {
-        PERROR << "Failed to fstat " << fname;
-        goto out;
-    }
-
-    size = VERITY_KMSG_BUFSIZE;
-
-    if (size > s.st_size) {
-        size = s.st_size;
-    }
-
-    if (lseek(fd, s.st_size - size, SEEK_SET) == -1) {
-        PERROR << "Failed to lseek " << (intmax_t)(s.st_size - size) << " " << fname;
-        goto out;
-    }
-
-    if (!android::base::ReadFully(fd, buffer, size)) {
-        PERROR << "Failed to read " << size << " bytes from " << fname;
-        goto out;
-    }
-
-    buffer[size] = '\0';
-
-    if (strstr(buffer, VERITY_KMSG_RESTART) != NULL) {
-        rc = 1;
-    }
-
-out:
-    if (fd != -1) {
-        close(fd);
-    }
-
-    return rc;
-}
-
-static int was_verity_restart()
-{
-    static const char* files[] = {
-        // clang-format off
-        "/sys/fs/pstore/console-ramoops-0",
-        "/sys/fs/pstore/console-ramoops",
-        "/proc/last_kmsg",
-        NULL
-        // clang-format on
-    };
-    int i;
-
-    for (i = 0; files[i]; ++i) {
-        if (check_verity_restart(files[i])) {
-            return 1;
-        }
-    }
-
-    return 0;
-}
-
-static int metadata_add(FILE *fp, long start, const char *tag,
-        unsigned int length, off64_t *offset)
-{
-    if (fseek(fp, start, SEEK_SET) < 0 ||
-        fprintf(fp, "%s %u\n", tag, length) < 0) {
-        return -1;
-    }
-
-    *offset = ftell(fp);
-
-    if (fseek(fp, length, SEEK_CUR) < 0 ||
-        fprintf(fp, METADATA_EOD " 0\n") < 0) {
-        return -1;
-    }
-
-    return 0;
-}
-
-static int metadata_find(const char *fname, const char *stag,
-        unsigned int slength, off64_t *offset)
-{
-    char tag[METADATA_TAG_MAX_LENGTH + 1];
-    int rc = -1;
-    int n;
-    long start = 0x4000; /* skip cryptfs metadata area */
-    uint32_t magic;
-    unsigned int length = 0;
-
-    if (!fname) {
-        return -1;
-    }
-
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(fname, "re+"), fclose};
-
-    if (!fp) {
-        PERROR << "Failed to open " << fname;
-        return -1;
-    }
-
-    /* check magic */
-    if (fseek(fp.get(), start, SEEK_SET) < 0 || fread(&magic, sizeof(magic), 1, fp.get()) != 1) {
-        PERROR << "Failed to read magic from " << fname;
-        return -1;
-    }
-
-    if (magic != METADATA_MAGIC) {
-        magic = METADATA_MAGIC;
-
-        if (fseek(fp.get(), start, SEEK_SET) < 0 ||
-            fwrite(&magic, sizeof(magic), 1, fp.get()) != 1) {
-            PERROR << "Failed to write magic to " << fname;
-            return -1;
-        }
-
-        rc = metadata_add(fp.get(), start + sizeof(magic), stag, slength, offset);
-        if (rc < 0) {
-            PERROR << "Failed to add metadata to " << fname;
-        }
-
-        return rc;
-    }
-
-    start += sizeof(magic);
-
-    while (1) {
-        n = fscanf(fp.get(), "%" STRINGIFY(METADATA_TAG_MAX_LENGTH) "s %u\n", tag, &length);
-
-        if (n == 2 && strcmp(tag, METADATA_EOD)) {
-            /* found a tag */
-            start = ftell(fp.get());
-
-            if (!strcmp(tag, stag) && length == slength) {
-                *offset = start;
-                return 0;
-            }
-
-            start += length;
-
-            if (fseek(fp.get(), length, SEEK_CUR) < 0) {
-                PERROR << "Failed to seek " << fname;
-                return -1;
-            }
-        } else {
-            rc = metadata_add(fp.get(), start, stag, slength, offset);
-            if (rc < 0) {
-                PERROR << "Failed to write metadata to " << fname;
-            }
-            return rc;
-        }
-    }
-}
-
-static int write_verity_state(const char *fname, off64_t offset, int32_t mode)
-{
-    int fd;
-    int rc = -1;
-    struct verity_state s = { VERITY_STATE_HEADER, VERITY_STATE_VERSION, mode };
-
-    fd = TEMP_FAILURE_RETRY(open(fname, O_WRONLY | O_SYNC | O_CLOEXEC));
-
-    if (fd == -1) {
-        PERROR << "Failed to open " << fname;
-        goto out;
-    }
-
-    if (TEMP_FAILURE_RETRY(pwrite64(fd, &s, sizeof(s), offset)) != sizeof(s)) {
-        PERROR << "Failed to write " << sizeof(s) << " bytes to " << fname
-               << " to offset " << offset;
-        goto out;
-    }
-
-    rc = 0;
-
-out:
-    if (fd != -1) {
-        close(fd);
-    }
-
-    return rc;
-}
-
-static int read_verity_state(const char *fname, off64_t offset, int *mode)
-{
-    int fd = -1;
-    int rc = -1;
-    struct verity_state s;
-
-    fd = TEMP_FAILURE_RETRY(open(fname, O_RDONLY | O_CLOEXEC));
-
-    if (fd == -1) {
-        PERROR << "Failed to open " << fname;
-        goto out;
-    }
-
-    if (TEMP_FAILURE_RETRY(pread64(fd, &s, sizeof(s), offset)) != sizeof(s)) {
-        PERROR << "Failed to read " <<  sizeof(s) << " bytes from " << fname
-               << " offset " << offset;
-        goto out;
-    }
-
-    if (s.header != VERITY_STATE_HEADER) {
-        /* space allocated, but no state written. write default state */
-        *mode = VERITY_MODE_DEFAULT;
-        rc = write_verity_state(fname, offset, *mode);
-        goto out;
-    }
-
-    if (s.version != VERITY_STATE_VERSION) {
-        LERROR << "Unsupported verity state version (" << s.version << ")";
-        goto out;
-    }
-
-    if (s.mode < VERITY_MODE_EIO ||
-        s.mode > VERITY_MODE_LAST) {
-        LERROR << "Unsupported verity mode (" << s.mode << ")";
-        goto out;
-    }
-
-    *mode = s.mode;
-    rc = 0;
-
-out:
-    if (fd != -1) {
-        close(fd);
-    }
-
-    return rc;
-}
-
 static int read_partition(const char *path, uint64_t size)
 {
     char buf[READ_BUF_SIZE];
@@ -540,119 +299,23 @@
     return 0;
 }
 
-static int compare_last_signature(const FstabEntry& entry, int* match) {
-    char tag[METADATA_TAG_MAX_LENGTH + 1];
-    int fd = -1;
-    int rc = -1;
-    off64_t offset = 0;
-    struct fec_handle *f = NULL;
-    struct fec_verity_metadata verity;
-    uint8_t curr[SHA256_DIGEST_LENGTH];
-    uint8_t prev[SHA256_DIGEST_LENGTH];
-
-    *match = 1;
-
-    if (fec_open(&f, entry.blk_device.c_str(), O_RDONLY, FEC_VERITY_DISABLE, FEC_DEFAULT_ROOTS) ==
-        -1) {
-        PERROR << "Failed to open '" << entry.blk_device << "'";
-        return rc;
-    }
-
-    // read verity metadata
-    if (fec_verity_get_metadata(f, &verity) == -1) {
-        PERROR << "Failed to get verity metadata '" << entry.blk_device << "'";
-        goto out;
-    }
-
-    SHA256(verity.signature, sizeof(verity.signature), curr);
-
-    if (snprintf(tag, sizeof(tag), VERITY_LASTSIG_TAG "_%s", basename(entry.mount_point.c_str())) >=
-        (int)sizeof(tag)) {
-        LERROR << "Metadata tag name too long for " << entry.mount_point;
-        goto out;
-    }
-
-    if (metadata_find(entry.verity_loc.c_str(), tag, SHA256_DIGEST_LENGTH, &offset) < 0) {
-        goto out;
-    }
-
-    fd = TEMP_FAILURE_RETRY(open(entry.verity_loc.c_str(), O_RDWR | O_SYNC | O_CLOEXEC));
-
-    if (fd == -1) {
-        PERROR << "Failed to open " << entry.verity_loc;
-        goto out;
-    }
-
-    if (TEMP_FAILURE_RETRY(pread64(fd, prev, sizeof(prev), offset)) != sizeof(prev)) {
-        PERROR << "Failed to read " << sizeof(prev) << " bytes from " << entry.verity_loc
-               << " offset " << offset;
-        goto out;
-    }
-
-    *match = !memcmp(curr, prev, SHA256_DIGEST_LENGTH);
-
-    if (!*match) {
-        /* update current signature hash */
-        if (TEMP_FAILURE_RETRY(pwrite64(fd, curr, sizeof(curr),
-                offset)) != sizeof(curr)) {
-            PERROR << "Failed to write " << sizeof(curr) << " bytes to " << entry.verity_loc
-                   << " offset " << offset;
-            goto out;
-        }
-    }
-
-    rc = 0;
-
-out:
-    fec_close(f);
-    return rc;
-}
-
-static int get_verity_state_offset(const FstabEntry& entry, off64_t* offset) {
-    char tag[METADATA_TAG_MAX_LENGTH + 1];
-
-    if (snprintf(tag, sizeof(tag), VERITY_STATE_TAG "_%s", basename(entry.mount_point.c_str())) >=
-        (int)sizeof(tag)) {
-        LERROR << "Metadata tag name too long for " << entry.mount_point;
-        return -1;
-    }
-
-    return metadata_find(entry.verity_loc.c_str(), tag, sizeof(struct verity_state), offset);
-}
-
-int load_verity_state(const FstabEntry& entry, int* mode) {
+bool fs_mgr_load_verity_state(int* mode) {
     // unless otherwise specified, use EIO mode.
     *mode = VERITY_MODE_EIO;
 
-    // use the kernel parameter if set.
-    std::string veritymode;
-    if (fs_mgr_get_boot_config("veritymode", &veritymode)) {
-        if (veritymode == "enforcing") {
-            *mode = VERITY_MODE_DEFAULT;
-        }
-        return 0;
+    // The bootloader communicates verity mode via the kernel commandline
+    std::string verity_mode;
+    if (!fs_mgr_get_boot_config("veritymode", &verity_mode)) {
+        return false;
     }
 
-    off64_t offset = 0;
-    if (get_verity_state_offset(entry, &offset) < 0) {
-        /* fall back to stateless behavior */
-        return 0;
-    }
-
-    if (was_verity_restart()) {
-        /* device was restarted after dm-verity detected a corrupted
-         * block, so use EIO mode */
-        return write_verity_state(entry.verity_loc.c_str(), offset, *mode);
-    }
-
-    int match = 0;
-    if (!compare_last_signature(entry, &match) && !match) {
-        /* partition has been reflashed, reset dm-verity state */
+    if (verity_mode == "enforcing") {
         *mode = VERITY_MODE_DEFAULT;
-        return write_verity_state(entry.verity_loc.c_str(), offset, *mode);
+    } else if (verity_mode == "logging") {
+        *mode = VERITY_MODE_LOGGING;
     }
 
-    return read_verity_state(entry.verity_loc.c_str(), offset, mode);
+    return true;
 }
 
 // Update the verity table using the actual block device path.
@@ -759,7 +422,7 @@
 
     params.ecc_dev = entry->blk_device.c_str();
 
-    if (load_verity_state(*entry, &params.mode) < 0) {
+    if (!fs_mgr_load_verity_state(&params.mode)) {
         /* if accessing or updating the state failed, switch to the default
          * safe mode. This makes sure the device won't end up in an endless
          * restart loop, and no corrupted data will be exposed to userspace
@@ -867,7 +530,7 @@
     }
 
     // make sure we've set everything up properly
-    if (wait_for_verity_dev && !fs_mgr_wait_for_file(entry->blk_device, 1s)) {
+    if (wait_for_verity_dev && !WaitForFile(entry->blk_device, 1s)) {
         goto out;
     }
 
@@ -884,9 +547,9 @@
     return retval;
 }
 
-bool fs_mgr_teardown_verity(FstabEntry* entry, bool wait) {
+bool fs_mgr_teardown_verity(FstabEntry* entry) {
     const std::string mount_point(basename(entry->mount_point.c_str()));
-    if (!android::fs_mgr::UnmapDevice(mount_point, wait ? 1000ms : 0ms)) {
+    if (!android::fs_mgr::UnmapDevice(mount_point)) {
         return false;
     }
     LINFO << "Unmapped verity device " << mount_point;
diff --git a/fs_mgr/include/fs_mgr.h b/fs_mgr/include/fs_mgr.h
index bdec7be..2a67b8c 100644
--- a/fs_mgr/include/fs_mgr.h
+++ b/fs_mgr/include/fs_mgr.h
@@ -46,7 +46,9 @@
 enum mount_mode {
     MOUNT_MODE_DEFAULT = 0,
     MOUNT_MODE_EARLY = 1,
-    MOUNT_MODE_LATE = 2
+    MOUNT_MODE_LATE = 2,
+    // TODO(b/135984674): remove this after refactoring fs_mgr_mount_all.
+    MOUNT_MODE_ONLY_USERDATA = 3
 };
 
 #define FS_MGR_MNTALL_DEV_IS_METADATA_ENCRYPTED 7
@@ -67,7 +69,7 @@
 int fs_mgr_do_mount(android::fs_mgr::Fstab* fstab, const char* n_name, char* n_blk_device,
                     char* tmp_mount_point);
 int fs_mgr_do_mount(android::fs_mgr::Fstab* fstab, const char* n_name, char* n_blk_device,
-                    char* tmp_mount_point, bool need_cp);
+                    char* tmp_mount_point, bool need_cp, bool metadata_encrypted);
 int fs_mgr_do_mount_one(const android::fs_mgr::FstabEntry& entry,
                         const std::string& mount_point = "");
 int fs_mgr_do_tmpfs_mount(const char *n_name);
@@ -105,6 +107,11 @@
 // it destroys verity devices from device mapper after the device is unmounted.
 int fs_mgr_umount_all(android::fs_mgr::Fstab* fstab);
 
+// Finds a entry in |fstab| that was used to mount a /data on |data_block_device|.
+android::fs_mgr::FstabEntry* fs_mgr_get_mounted_entry_for_userdata(
+        android::fs_mgr::Fstab* fstab, const std::string& data_block_device);
+int fs_mgr_remount_userdata_into_checkpointing(android::fs_mgr::Fstab* fstab);
+
 // Finds the dm_bow device on which this block device is stacked, or returns
 // empty string
 std::string fs_mgr_find_bow_device(const std::string& block_device);
diff --git a/fs_mgr/include/fs_mgr/file_wait.h b/fs_mgr/include/fs_mgr/file_wait.h
new file mode 100644
index 0000000..74d160e
--- /dev/null
+++ b/fs_mgr/include/fs_mgr/file_wait.h
@@ -0,0 +1,34 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <chrono>
+#include <string>
+
+namespace android {
+namespace fs_mgr {
+
+// Wait at most |relative_timeout| milliseconds for |path| to exist. dirname(path)
+// must already exist. For example, to wait on /dev/block/dm-6, /dev/block must
+// be a valid directory.
+bool WaitForFile(const std::string& path, const std::chrono::milliseconds relative_timeout);
+
+// Wait at most |relative_timeout| milliseconds for |path| to stop existing.
+// Note that this only returns true if the inode itself no longer exists, i.e.,
+// all outstanding file descriptors have been closed.
+bool WaitForFileDeleted(const std::string& path, const std::chrono::milliseconds relative_timeout);
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/include/fs_mgr_dm_linear.h b/fs_mgr/include/fs_mgr_dm_linear.h
index f33fc02..f3d09fb 100644
--- a/fs_mgr/include/fs_mgr_dm_linear.h
+++ b/fs_mgr/include/fs_mgr_dm_linear.h
@@ -29,6 +29,7 @@
 
 #include <chrono>
 #include <memory>
+#include <optional>
 #include <string>
 #include <vector>
 
@@ -49,26 +50,62 @@
 // method for ReadMetadata and CreateLogicalPartitions.
 bool CreateLogicalPartitions(const std::string& block_device);
 
-// Create a block device for a single logical partition, given metadata and
-// the partition name. On success, a path to the partition's block device is
-// returned. If |force_writable| is true, the "readonly" flag will be ignored
-// so the partition can be flashed.
-//
-// If |timeout_ms| is non-zero, then CreateLogicalPartition will block for the
-// given amount of time until the path returned in |path| is available.
-bool CreateLogicalPartition(const std::string& block_device, uint32_t metadata_slot,
-                            const std::string& partition_name, bool force_writable,
-                            const std::chrono::milliseconds& timeout_ms, std::string* path);
+struct CreateLogicalPartitionParams {
+    // Block device of the super partition.
+    std::string block_device;
 
-// Same as above, but with a given metadata object. Care should be taken that
-// the metadata represents a valid partition layout.
-bool CreateLogicalPartition(const std::string& block_device, const LpMetadata& metadata,
-                            const std::string& partition_name, bool force_writable,
-                            const std::chrono::milliseconds& timeout_ms, std::string* path);
+    // If |metadata| is null, the slot will be read using |metadata_slot|.
+    const LpMetadata* metadata = nullptr;
+    std::optional<uint32_t> metadata_slot;
+
+    // If |partition| is not set, it will be found via |partition_name|.
+    const LpMetadataPartition* partition = nullptr;
+    std::string partition_name;
+
+    // Force the device to be read-write even if it was specified as readonly
+    // in the metadata.
+    bool force_writable = false;
+
+    // If |timeout_ms| is non-zero, then CreateLogicalPartition will block for
+    // the given amount of time until the path returned in |path| is available.
+    std::chrono::milliseconds timeout_ms = {};
+
+    // If this is non-empty, it will override the device mapper name (by
+    // default the partition name will be used).
+    std::string device_name;
+
+    // If non-null, this will use the specified IPartitionOpener rather than
+    // the default one.
+    const IPartitionOpener* partition_opener = nullptr;
+
+    // Helpers for determining the effective partition and device name.
+    std::string GetPartitionName() const;
+    std::string GetDeviceName() const;
+
+    // Specify ownership of fields. The ownership of these fields are managed
+    // by the caller of InitDefaults().
+    // These are not declared in CreateLogicalPartitionParams so that the
+    // copy constructor is not deleted.
+    struct OwnedData {
+        std::unique_ptr<LpMetadata> metadata;
+        std::unique_ptr<IPartitionOpener> partition_opener;
+    };
+
+    // Fill in default values for |params| that CreateLogicalPartition assumes. Caller does
+    // not need to call this before calling CreateLogicalPartition; CreateLogicalPartition sets
+    // values when they are missing.
+    // Caller is responsible for destroying owned_data when |this| is not used.
+    bool InitDefaults(OwnedData* owned);
+};
+
+bool CreateLogicalPartition(CreateLogicalPartitionParams params, std::string* path);
 
 // Destroy the block device for a logical partition, by name. If |timeout_ms|
 // is non-zero, then this will block until the device path has been unlinked.
-bool DestroyLogicalPartition(const std::string& name, const std::chrono::milliseconds& timeout_ms);
+bool DestroyLogicalPartition(const std::string& name);
+
+// Helper for populating a DmTable for a logical partition.
+bool CreateDmTable(CreateLogicalPartitionParams params, android::dm::DmTable* table);
 
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/include/fs_mgr_overlayfs.h b/fs_mgr/include/fs_mgr_overlayfs.h
index 9a7381f..34aded9 100644
--- a/fs_mgr/include/fs_mgr_overlayfs.h
+++ b/fs_mgr/include/fs_mgr_overlayfs.h
@@ -16,8 +16,11 @@
 
 #pragma once
 
+#include <functional>
+
 #include <fstab/fstab.h>
 
+#include <set>
 #include <string>
 #include <vector>
 
@@ -38,3 +41,13 @@
     kOverrideCredsRequired,
 };
 OverlayfsValidResult fs_mgr_overlayfs_valid();
+
+namespace android {
+namespace fs_mgr {
+
+void MapScratchPartitionIfNeeded(Fstab* fstab,
+                                 const std::function<bool(const std::set<std::string>&)>& init);
+void CleanupOldScratchFiles();
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/include_fstab/fstab/fstab.h b/fs_mgr/include_fstab/fstab/fstab.h
index d7afed6..7cf4f89 100644
--- a/fs_mgr/include_fstab/fstab/fstab.h
+++ b/fs_mgr/include_fstab/fstab/fstab.h
@@ -36,9 +36,10 @@
     std::string fs_type;
     unsigned long flags = 0;
     std::string fs_options;
+    std::string fs_checkpoint_opts;
     std::string key_loc;
-    std::string key_dir;
-    std::string verity_loc;
+    std::string metadata_key_dir;
+    std::string metadata_encryption;
     off64_t length = 0;
     std::string label;
     int partnum = -1;
@@ -46,15 +47,12 @@
     int max_comp_streams = 0;
     off64_t zram_size = 0;
     off64_t reserved_size = 0;
-    std::string file_contents_mode;
-    std::string file_names_mode;
+    std::string encryption_options;
     off64_t erase_blk_size = 0;
     off64_t logical_blk_size = 0;
     std::string sysfs_path;
     std::string vbmeta_partition;
-    std::string zram_loopback_path;
-    uint64_t zram_loopback_size = 512 * 1024 * 1024;  // 512MB by default;
-    std::string zram_backing_dev_path;
+    uint64_t zram_backingdev_size = 0;
     std::string avb_keys;
 
     struct FsMgrFlags {
@@ -84,6 +82,7 @@
         bool first_stage_mount : 1;
         bool slot_select_other : 1;
         bool fs_verity : 1;
+        bool ext_meta_csum : 1;
     } fs_mgr_flags = {};
 
     bool is_encryptable() const {
@@ -102,9 +101,18 @@
 bool SkipMountingPartitions(Fstab* fstab);
 
 FstabEntry* GetEntryForMountPoint(Fstab* fstab, const std::string& path);
+// The Fstab can contain multiple entries for the same mount point with different configurations.
+std::vector<FstabEntry*> GetEntriesForMountPoint(Fstab* fstab, const std::string& path);
 
-// Helper method to build a GSI fstab entry for mounting /system.
-FstabEntry BuildGsiSystemFstabEntry();
+// This method builds DSU fstab entries and transfer the fstab.
+//
+// fstab points to the unmodified fstab.
+//
+// dsu_partitions contains partition names, e.g.
+//     dsu_partitions[0] = "system_gsi"
+//     dsu_partitions[1] = "userdata_gsi"
+//     dsu_partitions[2] = ...
+void TransformFstabForDsu(Fstab* fstab, const std::vector<std::string>& dsu_partitions);
 
 std::set<std::string> GetBootDevices();
 
diff --git a/fs_mgr/libdm/Android.bp b/fs_mgr/libdm/Android.bp
index c8c2d83..58241b3 100644
--- a/fs_mgr/libdm/Android.bp
+++ b/fs_mgr/libdm/Android.bp
@@ -27,8 +27,12 @@
         "dm_target.cpp",
         "dm.cpp",
         "loop_control.cpp",
+        "utility.cpp",
     ],
 
+    static_libs: [
+        "libext2_uuid",
+    ],
     header_libs: [
         "libbase_headers",
         "liblog_headers",
@@ -40,17 +44,61 @@
     },
 }
 
-cc_test {
-    name: "libdm_test",
-    defaults: ["fs_mgr_defaults"],
-    static_libs: [
-        "libdm",
-        "libbase",
-        "liblog",
-    ],
+filegroup {
+    name: "libdm_test_srcs",
     srcs: [
         "dm_test.cpp",
         "loop_control_test.cpp",
         "test_util.cpp",
-    ]
+    ],
+}
+
+cc_defaults {
+    name: "libdm_test_defaults",
+    defaults: ["fs_mgr_defaults"],
+    static_libs: [
+        "libdm",
+        "libext2_uuid",
+        "libfs_mgr",
+    ],
+    shared_libs: [
+        "libbase",
+        "liblog",
+    ],
+    srcs: [":libdm_test_srcs"],
+    auto_gen_config: true,
+    require_root: true,
+}
+
+cc_test {
+    name: "libdm_test",
+    defaults: ["libdm_test_defaults"],
+    test_suites: ["device-tests"],
+}
+
+cc_test {
+    name: "vts_libdm_test",
+    defaults: ["libdm_test_defaults"],
+    test_suites: ["vts"],
+    test_min_api_level: 29,
+}
+
+cc_fuzz {
+    name: "dm_linear_table_fuzzer",
+    defaults: ["fs_mgr_defaults"],
+    srcs: [
+        "dm_linear_fuzzer.cpp",
+        "test_util.cpp",
+    ],
+    static_libs: [
+        "libdm",
+        "libbase",
+        "libext2_uuid",
+        "libfs_mgr",
+        "liblog",
+    ],
+}
+
+vts_config {
+    name: "VtsKernelLibdmTest",
 }
diff --git a/fs_mgr/libdm/Android.mk b/fs_mgr/libdm/Android.mk
deleted file mode 100644
index 6aedc25..0000000
--- a/fs_mgr/libdm/Android.mk
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# Copyright (C) 2018 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := VtsKernelLibdmTest
--include test/vts/tools/build/Android.host_config.mk
diff --git a/fs_mgr/libdm/dm.cpp b/fs_mgr/libdm/dm.cpp
index a4614d0..7912688 100644
--- a/fs_mgr/libdm/dm.cpp
+++ b/fs_mgr/libdm/dm.cpp
@@ -16,16 +16,30 @@
 
 #include "libdm/dm.h"
 
+#include <linux/dm-ioctl.h>
 #include <sys/ioctl.h>
 #include <sys/sysmacros.h>
 #include <sys/types.h>
 
+#include <chrono>
+#include <functional>
+#include <string_view>
+#include <thread>
+
+#include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/macros.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <uuid/uuid.h>
+
+#include "utility.h"
 
 namespace android {
 namespace dm {
 
+using namespace std::literals;
+
 DeviceMapper::DeviceMapper() : fd_(-1) {
     fd_ = TEMP_FAILURE_RETRY(open("/dev/device-mapper", O_RDWR | O_CLOEXEC));
     if (fd_ < 0) {
@@ -37,13 +51,13 @@
     static DeviceMapper instance;
     return instance;
 }
+
 // Creates a new device mapper device
-bool DeviceMapper::CreateDevice(const std::string& name) {
+bool DeviceMapper::CreateDevice(const std::string& name, const std::string& uuid) {
     if (name.empty()) {
         LOG(ERROR) << "Unnamed device mapper device creation is not supported";
         return false;
     }
-
     if (name.size() >= DM_NAME_LEN) {
         LOG(ERROR) << "[" << name << "] is too long to be device mapper name";
         return false;
@@ -51,6 +65,9 @@
 
     struct dm_ioctl io;
     InitIo(&io, name);
+    if (!uuid.empty()) {
+        snprintf(io.uuid, sizeof(io.uuid), "%s", uuid.c_str());
+    }
 
     if (ioctl(fd_, DM_DEV_CREATE, &io)) {
         PLOG(ERROR) << "DM_DEV_CREATE failed for [" << name << "]";
@@ -66,17 +83,24 @@
     return true;
 }
 
-bool DeviceMapper::DeleteDevice(const std::string& name) {
-    if (name.empty()) {
-        LOG(ERROR) << "Unnamed device mapper device creation is not supported";
-        return false;
+bool DeviceMapper::DeleteDeviceIfExists(const std::string& name,
+                                        const std::chrono::milliseconds& timeout_ms) {
+    if (GetState(name) == DmDeviceState::INVALID) {
+        return true;
     }
+    return DeleteDevice(name, timeout_ms);
+}
 
-    if (name.size() >= DM_NAME_LEN) {
-        LOG(ERROR) << "[" << name << "] is too long to be device mapper name";
-        return false;
+bool DeviceMapper::DeleteDeviceIfExists(const std::string& name) {
+    return DeleteDeviceIfExists(name, 0ms);
+}
+
+bool DeviceMapper::DeleteDevice(const std::string& name,
+                                const std::chrono::milliseconds& timeout_ms) {
+    std::string unique_path;
+    if (!GetDeviceUniquePath(name, &unique_path)) {
+        LOG(ERROR) << "Failed to get unique path for device " << name;
     }
-
     struct dm_ioctl io;
     InitIo(&io, name);
 
@@ -90,12 +114,98 @@
     CHECK(io.flags & DM_UEVENT_GENERATED_FLAG)
             << "Didn't generate uevent for [" << name << "] removal";
 
+    if (timeout_ms <= std::chrono::milliseconds::zero()) {
+        return true;
+    }
+    if (unique_path.empty()) {
+        return false;
+    }
+    if (!WaitForFileDeleted(unique_path, timeout_ms)) {
+        LOG(ERROR) << "Failed waiting for " << unique_path << " to be deleted";
+        return false;
+    }
     return true;
 }
 
-const std::unique_ptr<DmTable> DeviceMapper::table(const std::string& /* name */) const {
-    // TODO(b/110035986): Return the table, as read from the kernel instead
-    return nullptr;
+bool DeviceMapper::DeleteDevice(const std::string& name) {
+    return DeleteDevice(name, 0ms);
+}
+
+static std::string GenerateUuid() {
+    uuid_t uuid_bytes;
+    uuid_generate(uuid_bytes);
+
+    char uuid_chars[37] = {};
+    uuid_unparse_lower(uuid_bytes, uuid_chars);
+
+    return std::string{uuid_chars};
+}
+
+static bool IsRecovery() {
+    return access("/system/bin/recovery", F_OK) == 0;
+}
+
+bool DeviceMapper::CreateDevice(const std::string& name, const DmTable& table, std::string* path,
+                                const std::chrono::milliseconds& timeout_ms) {
+    std::string uuid = GenerateUuid();
+    if (!CreateDevice(name, uuid)) {
+        return false;
+    }
+
+    // We use the unique path for testing whether the device is ready. After
+    // that, it's safe to use the dm-N path which is compatible with callers
+    // that expect it to be formatted as such.
+    std::string unique_path;
+    if (!LoadTableAndActivate(name, table) || !GetDeviceUniquePath(name, &unique_path) ||
+        !GetDmDevicePathByName(name, path)) {
+        DeleteDevice(name);
+        return false;
+    }
+
+    if (timeout_ms <= std::chrono::milliseconds::zero()) {
+        return true;
+    }
+
+    if (IsRecovery()) {
+        bool non_ab_device = android::base::GetProperty("ro.build.ab_update", "").empty();
+        int sdk = android::base::GetIntProperty("ro.build.version.sdk", 0);
+        if (non_ab_device && sdk && sdk <= 29) {
+            LOG(INFO) << "Detected ueventd incompatibility, reverting to legacy libdm behavior.";
+            unique_path = *path;
+        }
+    }
+
+    if (!WaitForFile(unique_path, timeout_ms)) {
+        LOG(ERROR) << "Failed waiting for device path: " << unique_path;
+        DeleteDevice(name);
+        return false;
+    }
+    return true;
+}
+
+bool DeviceMapper::GetDeviceUniquePath(const std::string& name, std::string* path) {
+    struct dm_ioctl io;
+    InitIo(&io, name);
+    if (ioctl(fd_, DM_DEV_STATUS, &io) < 0) {
+        PLOG(ERROR) << "Failed to get device path: " << name;
+        return false;
+    }
+
+    if (io.uuid[0] == '\0') {
+        LOG(ERROR) << "Device does not have a unique path: " << name;
+        return false;
+    }
+    *path = "/dev/block/mapper/by-uuid/"s + io.uuid;
+    return true;
+}
+
+std::optional<DeviceMapper::Info> DeviceMapper::GetDetailedInfo(const std::string& name) const {
+    struct dm_ioctl io;
+    InitIo(&io, name);
+    if (ioctl(fd_, DM_DEV_STATUS, &io) < 0) {
+        return std::nullopt;
+    }
+    return Info(io.flags);
 }
 
 DmDeviceState DeviceMapper::GetState(const std::string& name) const {
@@ -110,12 +220,27 @@
     return DmDeviceState::SUSPENDED;
 }
 
-bool DeviceMapper::CreateDevice(const std::string& name, const DmTable& table) {
-    if (!CreateDevice(name)) {
+bool DeviceMapper::ChangeState(const std::string& name, DmDeviceState state) {
+    if (state != DmDeviceState::SUSPENDED && state != DmDeviceState::ACTIVE) {
         return false;
     }
-    if (!LoadTableAndActivate(name, table)) {
-        DeleteDevice(name);
+
+    struct dm_ioctl io;
+    InitIo(&io, name);
+
+    if (state == DmDeviceState::SUSPENDED) io.flags = DM_SUSPEND_FLAG;
+
+    if (ioctl(fd_, DM_DEV_SUSPEND, &io) < 0) {
+        PLOG(ERROR) << "DM_DEV_SUSPEND "
+                    << (state == DmDeviceState::SUSPENDED ? "suspend" : "resume") << " failed";
+        return false;
+    }
+    return true;
+}
+
+bool DeviceMapper::CreateDevice(const std::string& name, const DmTable& table) {
+    std::string ignore_path;
+    if (!CreateDevice(name, table, &ignore_path, 0ms)) {
         return false;
     }
     return true;
@@ -210,6 +335,20 @@
     return true;
 }
 
+bool DeviceMapper::GetTargetByName(const std::string& name, DmTargetTypeInfo* info) {
+    std::vector<DmTargetTypeInfo> targets;
+    if (!GetAvailableTargets(&targets)) {
+        return false;
+    }
+    for (const auto& target : targets) {
+        if (target.name() == name) {
+            if (info) *info = target;
+            return true;
+        }
+    }
+    return false;
+}
+
 bool DeviceMapper::GetAvailableDevices(std::vector<DmBlockDevice>* devices) {
     devices->clear();
 
@@ -288,6 +427,26 @@
     return true;
 }
 
+bool DeviceMapper::GetDeviceNumber(const std::string& name, dev_t* dev) {
+    struct dm_ioctl io;
+    InitIo(&io, name);
+    if (ioctl(fd_, DM_DEV_STATUS, &io) < 0) {
+        PLOG(WARNING) << "DM_DEV_STATUS failed for " << name;
+        return false;
+    }
+    *dev = io.dev;
+    return true;
+}
+
+bool DeviceMapper::GetDeviceString(const std::string& name, std::string* dev) {
+    dev_t num;
+    if (!GetDeviceNumber(name, &num)) {
+        return false;
+    }
+    *dev = std::to_string(major(num)) + ":" + std::to_string(minor(num));
+    return true;
+}
+
 bool DeviceMapper::GetTableStatus(const std::string& name, std::vector<TargetInfo>* table) {
     return GetTable(name, 0, table);
 }
@@ -354,5 +513,86 @@
     }
 }
 
+std::string DeviceMapper::GetTargetType(const struct dm_target_spec& spec) {
+    if (const void* p = memchr(spec.target_type, '\0', sizeof(spec.target_type))) {
+        ptrdiff_t length = reinterpret_cast<const char*>(p) - spec.target_type;
+        return std::string{spec.target_type, static_cast<size_t>(length)};
+    }
+    return std::string{spec.target_type, sizeof(spec.target_type)};
+}
+
+static bool ExtractBlockDeviceName(const std::string& path, std::string* name) {
+    static constexpr std::string_view kDevBlockPrefix("/dev/block/");
+    if (android::base::StartsWith(path, kDevBlockPrefix)) {
+        *name = path.substr(kDevBlockPrefix.length());
+        return true;
+    }
+    return false;
+}
+
+bool DeviceMapper::IsDmBlockDevice(const std::string& path) {
+    std::string name;
+    if (!ExtractBlockDeviceName(path, &name)) {
+        return false;
+    }
+    return android::base::StartsWith(name, "dm-");
+}
+
+std::optional<std::string> DeviceMapper::GetDmDeviceNameByPath(const std::string& path) {
+    std::string name;
+    if (!ExtractBlockDeviceName(path, &name)) {
+        LOG(WARNING) << path << " is not a block device";
+        return std::nullopt;
+    }
+    if (!android::base::StartsWith(name, "dm-")) {
+        LOG(WARNING) << path << " is not a dm device";
+        return std::nullopt;
+    }
+    std::string dm_name_file = "/sys/block/" + name + "/dm/name";
+    std::string dm_name;
+    if (!android::base::ReadFileToString(dm_name_file, &dm_name)) {
+        PLOG(ERROR) << "Failed to read file " << dm_name_file;
+        return std::nullopt;
+    }
+    dm_name = android::base::Trim(dm_name);
+    return dm_name;
+}
+
+std::optional<std::string> DeviceMapper::GetParentBlockDeviceByPath(const std::string& path) {
+    std::string name;
+    if (!ExtractBlockDeviceName(path, &name)) {
+        LOG(WARNING) << path << " is not a block device";
+        return std::nullopt;
+    }
+    if (!android::base::StartsWith(name, "dm-")) {
+        // Reached bottom of the device mapper stack.
+        return std::nullopt;
+    }
+    auto slaves_dir = "/sys/block/" + name + "/slaves";
+    auto dir = std::unique_ptr<DIR, decltype(&closedir)>(opendir(slaves_dir.c_str()), closedir);
+    if (dir == nullptr) {
+        PLOG(ERROR) << "Failed to open: " << slaves_dir;
+        return std::nullopt;
+    }
+    std::string sub_device_name = "";
+    for (auto entry = readdir(dir.get()); entry; entry = readdir(dir.get())) {
+        if (entry->d_type != DT_LNK) continue;
+        if (!sub_device_name.empty()) {
+            LOG(ERROR) << "Too many slaves in " << slaves_dir;
+            return std::nullopt;
+        }
+        sub_device_name = entry->d_name;
+    }
+    if (sub_device_name.empty()) {
+        LOG(ERROR) << "No slaves in " << slaves_dir;
+        return std::nullopt;
+    }
+    return "/dev/block/" + sub_device_name;
+}
+
+bool DeviceMapper::TargetInfo::IsOverflowSnapshot() const {
+    return spec.target_type == "snapshot"s && data == "Overflow"s;
+}
+
 }  // namespace dm
 }  // namespace android
diff --git a/fs_mgr/libdm/dm_linear_fuzzer.cpp b/fs_mgr/libdm/dm_linear_fuzzer.cpp
new file mode 100644
index 0000000..8462901
--- /dev/null
+++ b/fs_mgr/libdm/dm_linear_fuzzer.cpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <chrono>
+
+#include <android-base/file.h>
+#include <android-base/unique_fd.h>
+#include <libdm/dm_table.h>
+#include <libdm/loop_control.h>
+
+#include "test_util.h"
+
+using namespace android;
+using namespace android::base;
+using namespace android::dm;
+using namespace std;
+using namespace std::chrono_literals;
+
+/*
+ * This test aims at making the library crash, so these functions are not
+ * really useful.
+ * Keeping them here for future use.
+ */
+template <class T, class C>
+void ASSERT_EQ(const T& /*a*/, const C& /*b*/) {
+    // if (a != b) {}
+}
+
+template <class T>
+void ASSERT_FALSE(const T& /*a*/) {
+    // if (a) {}
+}
+
+template <class T, class C>
+void ASSERT_GE(const T& /*a*/, const C& /*b*/) {
+    // if (a < b) {}
+}
+
+template <class T, class C>
+void ASSERT_NE(const T& /*a*/, const C& /*b*/) {
+    // if (a == b) {}
+}
+
+template <class T>
+void ASSERT_TRUE(const T& /*a*/) {
+    // if (!a) {}
+}
+
+template <class T, class C>
+void EXPECT_EQ(const T& a, const C& b) {
+    ASSERT_EQ(a, b);
+}
+
+template <class T>
+void EXPECT_TRUE(const T& a) {
+    ASSERT_TRUE(a);
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    uint64_t val[6];
+
+    if (size != sizeof(val)) {
+        return 0;
+    }
+
+    memcpy(&val, &data[0], sizeof(*val));
+
+    unique_fd tmp1(CreateTempFile("file_1", 4096));
+    ASSERT_GE(tmp1, 0);
+    unique_fd tmp2(CreateTempFile("file_2", 4096));
+    ASSERT_GE(tmp2, 0);
+
+    LoopDevice loop_a(tmp1, 10s);
+    ASSERT_TRUE(loop_a.valid());
+    LoopDevice loop_b(tmp2, 10s);
+    ASSERT_TRUE(loop_b.valid());
+
+    // Define a 2-sector device, with each sector mapping to the first sector
+    // of one of our loop devices.
+    DmTable table;
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(val[0], val[1], loop_a.device(), val[2]));
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(val[3], val[4], loop_b.device(), val[5]));
+    ASSERT_TRUE(table.valid());
+    ASSERT_EQ(2u, table.num_sectors());
+
+    TempDevice dev("libdm-test-dm-linear", table);
+    ASSERT_TRUE(dev.valid());
+    ASSERT_FALSE(dev.path().empty());
+
+    auto& dm = DeviceMapper::Instance();
+
+    dev_t dev_number;
+    ASSERT_TRUE(dm.GetDeviceNumber(dev.name(), &dev_number));
+    ASSERT_NE(dev_number, 0);
+
+    std::string dev_string;
+    ASSERT_TRUE(dm.GetDeviceString(dev.name(), &dev_string));
+    ASSERT_FALSE(dev_string.empty());
+
+    // Test GetTableStatus.
+    vector<DeviceMapper::TargetInfo> targets;
+    ASSERT_TRUE(dm.GetTableStatus(dev.name(), &targets));
+    ASSERT_EQ(targets.size(), 2);
+    EXPECT_EQ(strcmp(targets[0].spec.target_type, "linear"), 0);
+    EXPECT_TRUE(targets[0].data.empty());
+    EXPECT_EQ(targets[0].spec.sector_start, 0);
+    EXPECT_EQ(targets[0].spec.length, 1);
+    EXPECT_EQ(strcmp(targets[1].spec.target_type, "linear"), 0);
+    EXPECT_TRUE(targets[1].data.empty());
+    EXPECT_EQ(targets[1].spec.sector_start, 1);
+    EXPECT_EQ(targets[1].spec.length, 1);
+
+    // Test GetTargetType().
+    EXPECT_EQ(DeviceMapper::GetTargetType(targets[0].spec), std::string{"linear"});
+    EXPECT_EQ(DeviceMapper::GetTargetType(targets[1].spec), std::string{"linear"});
+
+    // Normally the TestDevice destructor would delete this, but at least one
+    // test should ensure that device deletion works.
+    ASSERT_TRUE(dev.Destroy());
+
+    return 0;
+}
diff --git a/fs_mgr/libdm/dm_table.cpp b/fs_mgr/libdm/dm_table.cpp
index 15c7ce1..efe03ab 100644
--- a/fs_mgr/libdm/dm_table.cpp
+++ b/fs_mgr/libdm/dm_table.cpp
@@ -26,6 +26,7 @@
     if (!target->Valid()) {
         return false;
     }
+    num_sectors_ += target->size();
     targets_.push_back(std::move(target));
     return true;
 }
diff --git a/fs_mgr/libdm/dm_target.cpp b/fs_mgr/libdm/dm_target.cpp
index cb33eea..250cb82 100644
--- a/fs_mgr/libdm/dm_target.cpp
+++ b/fs_mgr/libdm/dm_target.cpp
@@ -16,8 +16,13 @@
 
 #include "libdm/dm_target.h"
 
+#include <inttypes.h>
+#include <stdio.h>
+#include <sys/types.h>
+
 #include <android-base/logging.h>
 #include <android-base/macros.h>
+#include <android-base/parseint.h>
 #include <android-base/strings.h>
 
 #include <libdm/dm.h>
@@ -115,5 +120,165 @@
     return keyid_ + " " + block_device_;
 }
 
+std::string DmTargetBow::GetParameterString() const {
+    if (!block_size_) return target_string_;
+    return target_string_ + " 1 block_size:" + std::to_string(block_size_);
+}
+
+std::string DmTargetSnapshot::name() const {
+    if (mode_ == SnapshotStorageMode::Merge) {
+        return "snapshot-merge";
+    }
+    return "snapshot";
+}
+
+std::string DmTargetSnapshot::GetParameterString() const {
+    std::string mode;
+    switch (mode_) {
+        case SnapshotStorageMode::Persistent:
+        case SnapshotStorageMode::Merge:
+            // Note: "O" lets us query for overflow in the status message. This
+            // is only supported on kernels 4.4+. On earlier kernels, an overflow
+            // will be reported as "Invalid" in the status string.
+            mode = "P";
+            if (ReportsOverflow(name())) {
+                mode += "O";
+            }
+            break;
+        case SnapshotStorageMode::Transient:
+            mode = "N";
+            break;
+        default:
+            LOG(ERROR) << "DmTargetSnapshot unknown mode";
+            break;
+    }
+    return base_device_ + " " + cow_device_ + " " + mode + " " + std::to_string(chunk_size_);
+}
+
+// Computes the percentage of complition for snapshot status.
+// @sectors_initial is the number of sectors_allocated stored right before
+// starting the merge.
+double DmTargetSnapshot::MergePercent(const DmTargetSnapshot::Status& status,
+                                      uint64_t sectors_initial) {
+    uint64_t s = status.sectors_allocated;
+    uint64_t t = status.total_sectors;
+    uint64_t m = status.metadata_sectors;
+    uint64_t i = sectors_initial == 0 ? t : sectors_initial;
+
+    if (t <= s || i <= s) {
+        return 0.0;
+    }
+    if (s == 0 || t == 0 || s <= m) {
+        return 100.0;
+    }
+    return 100.0 / (i - m) * (i - s);
+}
+
+bool DmTargetSnapshot::ReportsOverflow(const std::string& target_type) {
+    DeviceMapper& dm = DeviceMapper::Instance();
+    DmTargetTypeInfo info;
+    if (!dm.GetTargetByName(target_type, &info)) {
+        return false;
+    }
+    if (target_type == "snapshot") {
+        return info.IsAtLeast(1, 15, 0);
+    }
+    if (target_type == "snapshot-merge") {
+        return info.IsAtLeast(1, 4, 0);
+    }
+    return false;
+}
+
+bool DmTargetSnapshot::ParseStatusText(const std::string& text, Status* status) {
+    // Try to parse the line as it should be
+    int args = sscanf(text.c_str(), "%" PRIu64 "/%" PRIu64 " %" PRIu64, &status->sectors_allocated,
+                      &status->total_sectors, &status->metadata_sectors);
+    if (args == 3) {
+        return true;
+    }
+    auto sections = android::base::Split(text, " ");
+    if (sections.size() == 0) {
+        LOG(ERROR) << "could not parse empty status";
+        return false;
+    }
+    // Error codes are: "Invalid", "Overflow" and "Merge failed"
+    if (sections.size() == 1) {
+        if (text == "Invalid" || text == "Overflow") {
+            status->error = text;
+            return true;
+        }
+    } else if (sections.size() == 2 && text == "Merge failed") {
+        status->error = text;
+        return true;
+    }
+    LOG(ERROR) << "could not parse snapshot status: wrong format";
+    return false;
+}
+
+bool DmTargetSnapshot::GetDevicesFromParams(const std::string& params, std::string* base_device,
+                                            std::string* cow_device) {
+    auto pieces = android::base::Split(params, " ");
+    if (pieces.size() < 2) {
+        LOG(ERROR) << "Parameter string is invalid: " << params;
+        return false;
+    }
+    *base_device = pieces[0];
+    *cow_device = pieces[1];
+    return true;
+}
+
+std::string DmTargetCrypt::GetParameterString() const {
+    std::vector<std::string> argv = {
+            cipher_,
+            key_,
+            std::to_string(iv_sector_offset_),
+            device_,
+            std::to_string(device_sector_),
+    };
+
+    std::vector<std::string> extra_argv;
+    if (allow_discards_) extra_argv.emplace_back("allow_discards");
+    if (allow_encrypt_override_) extra_argv.emplace_back("allow_encrypt_override");
+    if (iv_large_sectors_) extra_argv.emplace_back("iv_large_sectors");
+    if (sector_size_) extra_argv.emplace_back("sector_size:" + std::to_string(sector_size_));
+
+    if (!extra_argv.empty()) argv.emplace_back(std::to_string(extra_argv.size()));
+
+    argv.insert(argv.end(), extra_argv.begin(), extra_argv.end());
+    return android::base::Join(argv, " ");
+}
+
+bool DmTargetDefaultKey::Valid() const {
+    if (!use_legacy_options_format_ && !set_dun_) return false;
+    return true;
+}
+
+std::string DmTargetDefaultKey::GetParameterString() const {
+    std::vector<std::string> argv;
+    argv.emplace_back(cipher_);
+    argv.emplace_back(key_);
+    if (!use_legacy_options_format_) {
+        argv.emplace_back("0");  // iv_offset
+    }
+    argv.emplace_back(blockdev_);
+    argv.push_back(std::to_string(start_sector_));
+    std::vector<std::string> extra_argv;
+    if (use_legacy_options_format_) {
+        if (set_dun_) {  // v2 always sets the DUN.
+            extra_argv.emplace_back("set_dun");
+        }
+    } else {
+        extra_argv.emplace_back("allow_discards");
+        extra_argv.emplace_back("sector_size:4096");
+        extra_argv.emplace_back("iv_large_sectors");
+        if (is_hw_wrapped_) extra_argv.emplace_back("wrappedkey_v0");
+    }
+    if (!extra_argv.empty()) {
+        argv.emplace_back(std::to_string(extra_argv.size()));
+        argv.insert(argv.end(), extra_argv.begin(), extra_argv.end());
+    }
+    return android::base::Join(argv, " ");
+}
+
 }  // namespace dm
 }  // namespace android
diff --git a/fs_mgr/libdm/dm_test.cpp b/fs_mgr/libdm/dm_test.cpp
index 70823c6..41d3145 100644
--- a/fs_mgr/libdm/dm_test.cpp
+++ b/fs_mgr/libdm/dm_test.cpp
@@ -24,10 +24,12 @@
 
 #include <chrono>
 #include <ctime>
+#include <iostream>
 #include <map>
 #include <thread>
 
 #include <android-base/file.h>
+#include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 #include <gtest/gtest.h>
 #include <libdm/dm.h>
@@ -35,88 +37,17 @@
 #include "test_util.h"
 
 using namespace std;
+using namespace std::chrono_literals;
 using namespace android::dm;
 using unique_fd = android::base::unique_fd;
 
 TEST(libdm, HasMinimumTargets) {
+    DmTargetTypeInfo info;
+
     DeviceMapper& dm = DeviceMapper::Instance();
-    vector<DmTargetTypeInfo> targets;
-    ASSERT_TRUE(dm.GetAvailableTargets(&targets));
-
-    map<string, DmTargetTypeInfo> by_name;
-    for (const auto& target : targets) {
-        by_name[target.name()] = target;
-    }
-
-    auto iter = by_name.find("linear");
-    EXPECT_NE(iter, by_name.end());
+    ASSERT_TRUE(dm.GetTargetByName("linear", &info));
 }
 
-// Helper to ensure that device mapper devices are released.
-class TempDevice {
-  public:
-    TempDevice(const std::string& name, const DmTable& table)
-        : dm_(DeviceMapper::Instance()), name_(name), valid_(false) {
-        valid_ = dm_.CreateDevice(name, table);
-    }
-    TempDevice(TempDevice&& other) noexcept
-        : dm_(other.dm_), name_(other.name_), valid_(other.valid_) {
-        other.valid_ = false;
-    }
-    ~TempDevice() {
-        if (valid_) {
-            dm_.DeleteDevice(name_);
-        }
-    }
-    bool Destroy() {
-        if (!valid_) {
-            return false;
-        }
-        valid_ = false;
-        return dm_.DeleteDevice(name_);
-    }
-    bool WaitForUdev() const {
-        auto start_time = std::chrono::steady_clock::now();
-        while (true) {
-            if (!access(path().c_str(), F_OK)) {
-                return true;
-            }
-            if (errno != ENOENT) {
-                return false;
-            }
-            std::this_thread::sleep_for(50ms);
-            std::chrono::duration elapsed = std::chrono::steady_clock::now() - start_time;
-            if (elapsed >= 5s) {
-                return false;
-            }
-        }
-    }
-    std::string path() const {
-        std::string device_path;
-        if (!dm_.GetDmDevicePathByName(name_, &device_path)) {
-            return "";
-        }
-        return device_path;
-    }
-    const std::string& name() const { return name_; }
-    bool valid() const { return valid_; }
-
-    TempDevice(const TempDevice&) = delete;
-    TempDevice& operator=(const TempDevice&) = delete;
-
-    TempDevice& operator=(TempDevice&& other) noexcept {
-        name_ = other.name_;
-        valid_ = other.valid_;
-        other.valid_ = false;
-        return *this;
-    }
-
-  private:
-    DeviceMapper& dm_;
-    std::string name_;
-    bool valid_;
-};
-
 TEST(libdm, DmLinear) {
     unique_fd tmp1(CreateTempFile("file_1", 4096));
     ASSERT_GE(tmp1, 0);
@@ -129,22 +60,32 @@
     ASSERT_TRUE(android::base::WriteFully(tmp1, message1, sizeof(message1)));
     ASSERT_TRUE(android::base::WriteFully(tmp2, message2, sizeof(message2)));
 
-    LoopDevice loop_a(tmp1);
+    LoopDevice loop_a(tmp1, 10s);
     ASSERT_TRUE(loop_a.valid());
-    LoopDevice loop_b(tmp2);
+    LoopDevice loop_b(tmp2, 10s);
     ASSERT_TRUE(loop_b.valid());
 
     // Define a 2-sector device, with each sector mapping to the first sector
     // of one of our loop devices.
     DmTable table;
-    ASSERT_TRUE(table.AddTarget(make_unique<DmTargetLinear>(0, 1, loop_a.device(), 0)));
-    ASSERT_TRUE(table.AddTarget(make_unique<DmTargetLinear>(1, 1, loop_b.device(), 0)));
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(0, 1, loop_a.device(), 0));
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(1, 1, loop_b.device(), 0));
     ASSERT_TRUE(table.valid());
+    ASSERT_EQ(2u, table.num_sectors());
 
     TempDevice dev("libdm-test-dm-linear", table);
     ASSERT_TRUE(dev.valid());
     ASSERT_FALSE(dev.path().empty());
-    ASSERT_TRUE(dev.WaitForUdev());
+
+    auto& dm = DeviceMapper::Instance();
+
+    dev_t dev_number;
+    ASSERT_TRUE(dm.GetDeviceNumber(dev.name(), &dev_number));
+    ASSERT_NE(dev_number, 0);
+
+    std::string dev_string;
+    ASSERT_TRUE(dm.GetDeviceString(dev.name(), &dev_string));
+    ASSERT_FALSE(dev_string.empty());
 
     // Note: a scope is needed to ensure that there are no open descriptors
     // when we go to close the device.
@@ -162,7 +103,6 @@
     }
 
     // Test GetTableStatus.
-    DeviceMapper& dm = DeviceMapper::Instance();
     vector<DeviceMapper::TargetInfo> targets;
     ASSERT_TRUE(dm.GetTableStatus(dev.name(), &targets));
     ASSERT_EQ(targets.size(), 2);
@@ -175,11 +115,44 @@
     EXPECT_EQ(targets[1].spec.sector_start, 1);
     EXPECT_EQ(targets[1].spec.length, 1);
 
+    // Test GetTargetType().
+    EXPECT_EQ(DeviceMapper::GetTargetType(targets[0].spec), std::string{"linear"});
+    EXPECT_EQ(DeviceMapper::GetTargetType(targets[1].spec), std::string{"linear"});
+
     // Normally the TestDevice destructor would delete this, but at least one
     // test should ensure that device deletion works.
     ASSERT_TRUE(dev.Destroy());
 }
 
+TEST(libdm, DmSuspendResume) {
+    unique_fd tmp1(CreateTempFile("file_suspend_resume", 512));
+    ASSERT_GE(tmp1, 0);
+
+    LoopDevice loop_a(tmp1, 10s);
+    ASSERT_TRUE(loop_a.valid());
+
+    DmTable table;
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(0, 1, loop_a.device(), 0));
+    ASSERT_TRUE(table.valid());
+    ASSERT_EQ(1u, table.num_sectors());
+
+    TempDevice dev("libdm-test-dm-suspend-resume", table);
+    ASSERT_TRUE(dev.valid());
+    ASSERT_FALSE(dev.path().empty());
+
+    auto& dm = DeviceMapper::Instance();
+
+    // Test Set and Get status of device.
+    vector<DeviceMapper::TargetInfo> targets;
+    ASSERT_EQ(dm.GetState(dev.name()), DmDeviceState::ACTIVE);
+
+    ASSERT_TRUE(dm.ChangeState(dev.name(), DmDeviceState::SUSPENDED));
+    ASSERT_EQ(dm.GetState(dev.name()), DmDeviceState::SUSPENDED);
+
+    ASSERT_TRUE(dm.ChangeState(dev.name(), DmDeviceState::ACTIVE));
+    ASSERT_EQ(dm.GetState(dev.name()), DmDeviceState::ACTIVE);
+}
+
 TEST(libdm, DmVerityArgsAvb2) {
     std::string device = "/dev/block/platform/soc/1da4000.ufshc/by-name/vendor_a";
     std::string algorithm = "sha1";
@@ -201,3 +174,446 @@
             "2 fec_blocks 126955 fec_start 126955 restart_on_corruption ignore_zero_blocks";
     EXPECT_EQ(target.GetParameterString(), expected);
 }
+
+TEST(libdm, DmSnapshotArgs) {
+    DmTargetSnapshot target1(0, 512, "base", "cow", SnapshotStorageMode::Persistent, 8);
+    if (DmTargetSnapshot::ReportsOverflow("snapshot")) {
+        EXPECT_EQ(target1.GetParameterString(), "base cow PO 8");
+    } else {
+        EXPECT_EQ(target1.GetParameterString(), "base cow P 8");
+    }
+    EXPECT_EQ(target1.name(), "snapshot");
+
+    DmTargetSnapshot target2(0, 512, "base", "cow", SnapshotStorageMode::Transient, 8);
+    EXPECT_EQ(target2.GetParameterString(), "base cow N 8");
+    EXPECT_EQ(target2.name(), "snapshot");
+
+    DmTargetSnapshot target3(0, 512, "base", "cow", SnapshotStorageMode::Merge, 8);
+    if (DmTargetSnapshot::ReportsOverflow("snapshot-merge")) {
+        EXPECT_EQ(target3.GetParameterString(), "base cow PO 8");
+    } else {
+        EXPECT_EQ(target3.GetParameterString(), "base cow P 8");
+    }
+    EXPECT_EQ(target3.name(), "snapshot-merge");
+}
+
+TEST(libdm, DmSnapshotOriginArgs) {
+    DmTargetSnapshotOrigin target(0, 512, "base");
+    EXPECT_EQ(target.GetParameterString(), "base");
+    EXPECT_EQ(target.name(), "snapshot-origin");
+}
+
+class SnapshotTestHarness final {
+  public:
+    bool Setup();
+    bool Merge();
+
+    std::string origin_dev() const { return origin_dev_->path(); }
+    std::string snapshot_dev() const { return snapshot_dev_->path(); }
+
+    int base_fd() const { return base_fd_; }
+
+    static const uint64_t kBaseDeviceSize = 1024 * 1024;
+    static const uint64_t kCowDeviceSize = 1024 * 64;
+    static const uint64_t kSectorSize = 512;
+
+  private:
+    void SetupImpl();
+    void MergeImpl();
+
+    unique_fd base_fd_;
+    unique_fd cow_fd_;
+    unique_ptr<LoopDevice> base_loop_;
+    unique_ptr<LoopDevice> cow_loop_;
+    unique_ptr<TempDevice> origin_dev_;
+    unique_ptr<TempDevice> snapshot_dev_;
+    bool setup_ok_ = false;
+    bool merge_ok_ = false;
+};
+
+bool SnapshotTestHarness::Setup() {
+    SetupImpl();
+    return setup_ok_;
+}
+
+void SnapshotTestHarness::SetupImpl() {
+    base_fd_ = CreateTempFile("base_device", kBaseDeviceSize);
+    ASSERT_GE(base_fd_, 0);
+    cow_fd_ = CreateTempFile("cow_device", kCowDeviceSize);
+    ASSERT_GE(cow_fd_, 0);
+
+    base_loop_ = std::make_unique<LoopDevice>(base_fd_, 10s);
+    ASSERT_TRUE(base_loop_->valid());
+    cow_loop_ = std::make_unique<LoopDevice>(cow_fd_, 10s);
+    ASSERT_TRUE(cow_loop_->valid());
+
+    DmTable origin_table;
+    ASSERT_TRUE(origin_table.AddTarget(make_unique<DmTargetSnapshotOrigin>(
+            0, kBaseDeviceSize / kSectorSize, base_loop_->device())));
+    ASSERT_TRUE(origin_table.valid());
+    ASSERT_EQ(kBaseDeviceSize / kSectorSize, origin_table.num_sectors());
+
+    origin_dev_ = std::make_unique<TempDevice>("libdm-test-dm-snapshot-origin", origin_table);
+    ASSERT_TRUE(origin_dev_->valid());
+    ASSERT_FALSE(origin_dev_->path().empty());
+
+    // chunk size = 4K blocks.
+    DmTable snap_table;
+    ASSERT_TRUE(snap_table.AddTarget(make_unique<DmTargetSnapshot>(
+            0, kBaseDeviceSize / kSectorSize, base_loop_->device(), cow_loop_->device(),
+            SnapshotStorageMode::Persistent, 8)));
+    ASSERT_TRUE(snap_table.valid());
+    ASSERT_EQ(kBaseDeviceSize / kSectorSize, snap_table.num_sectors());
+
+    snapshot_dev_ = std::make_unique<TempDevice>("libdm-test-dm-snapshot", snap_table);
+    ASSERT_TRUE(snapshot_dev_->valid());
+    ASSERT_FALSE(snapshot_dev_->path().empty());
+
+    setup_ok_ = true;
+}
+
+bool SnapshotTestHarness::Merge() {
+    MergeImpl();
+    return merge_ok_;
+}
+
+void SnapshotTestHarness::MergeImpl() {
+    DmTable merge_table;
+    ASSERT_TRUE(merge_table.AddTarget(
+            make_unique<DmTargetSnapshot>(0, kBaseDeviceSize / kSectorSize, base_loop_->device(),
+                                          cow_loop_->device(), SnapshotStorageMode::Merge, 8)));
+    ASSERT_TRUE(merge_table.valid());
+    ASSERT_EQ(kBaseDeviceSize / kSectorSize, merge_table.num_sectors());
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    ASSERT_TRUE(dm.LoadTableAndActivate("libdm-test-dm-snapshot", merge_table));
+
+    while (true) {
+        vector<DeviceMapper::TargetInfo> status;
+        ASSERT_TRUE(dm.GetTableStatus("libdm-test-dm-snapshot", &status));
+        ASSERT_EQ(status.size(), 1);
+        ASSERT_EQ(strncmp(status[0].spec.target_type, "snapshot-merge", strlen("snapshot-merge")),
+                  0);
+
+        DmTargetSnapshot::Status merge_status;
+        ASSERT_TRUE(DmTargetSnapshot::ParseStatusText(status[0].data, &merge_status));
+        ASSERT_TRUE(merge_status.error.empty());
+        if (merge_status.sectors_allocated == merge_status.metadata_sectors) {
+            break;
+        }
+
+        std::this_thread::sleep_for(250ms);
+    }
+
+    merge_ok_ = true;
+}
+
+bool CheckSnapshotAvailability() {
+    DmTargetTypeInfo info;
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (!dm.GetTargetByName("snapshot", &info)) {
+        cout << "snapshot module not enabled; skipping test" << std::endl;
+        return false;
+    }
+    if (!dm.GetTargetByName("snapshot-merge", &info)) {
+        cout << "snapshot-merge module not enabled; skipping test" << std::endl;
+        return false;
+    }
+    if (!dm.GetTargetByName("snapshot-origin", &info)) {
+        cout << "snapshot-origin module not enabled; skipping test" << std::endl;
+        return false;
+    }
+    return true;
+}
+
+TEST(libdm, DmSnapshot) {
+    if (!CheckSnapshotAvailability()) {
+        return;
+    }
+
+    SnapshotTestHarness harness;
+    ASSERT_TRUE(harness.Setup());
+
+    // Open the dm devices.
+    unique_fd origin_fd(open(harness.origin_dev().c_str(), O_RDONLY | O_CLOEXEC));
+    ASSERT_GE(origin_fd, 0);
+    unique_fd snapshot_fd(open(harness.snapshot_dev().c_str(), O_RDWR | O_CLOEXEC | O_SYNC));
+    ASSERT_GE(snapshot_fd, 0);
+
+    // Write to the first block of the snapshot device.
+    std::string data("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
+    ASSERT_TRUE(android::base::WriteFully(snapshot_fd, data.data(), data.size()));
+    ASSERT_EQ(lseek(snapshot_fd, 0, SEEK_SET), 0);
+
+    // We should get the same data back from the snapshot device.
+    std::string read(data.size(), '\0');
+    ASSERT_TRUE(android::base::ReadFully(snapshot_fd, read.data(), read.size()));
+    ASSERT_EQ(read, data);
+
+    // We should see the original data from the origin device.
+    std::string zeroes(data.size(), '\0');
+    ASSERT_TRUE(android::base::ReadFully(origin_fd, read.data(), read.size()));
+    ASSERT_EQ(lseek(snapshot_fd, 0, SEEK_SET), 0);
+    ASSERT_EQ(read, zeroes);
+
+    // We should also see the original data from the base device.
+    ASSERT_TRUE(android::base::ReadFully(harness.base_fd(), read.data(), read.size()));
+    ASSERT_EQ(lseek(harness.base_fd(), 0, SEEK_SET), 0);
+    ASSERT_EQ(read, zeroes);
+
+    // Now, perform the merge and wait.
+    ASSERT_TRUE(harness.Merge());
+
+    // Reading from the base device should give us the modified data.
+    ASSERT_TRUE(android::base::ReadFully(harness.base_fd(), read.data(), read.size()));
+    ASSERT_EQ(lseek(harness.base_fd(), 0, SEEK_SET), 0);
+    ASSERT_EQ(read, data);
+}
+
+TEST(libdm, DmSnapshotOverflow) {
+    if (!CheckSnapshotAvailability()) {
+        return;
+    }
+
+    SnapshotTestHarness harness;
+    ASSERT_TRUE(harness.Setup());
+
+    // Open the dm devices.
+    unique_fd snapshot_fd(open(harness.snapshot_dev().c_str(), O_RDWR | O_CLOEXEC));
+    ASSERT_GE(snapshot_fd, 0);
+
+    // Fill the copy-on-write device until it overflows.
+    uint64_t bytes_remaining = SnapshotTestHarness::kCowDeviceSize;
+    uint8_t byte = 1;
+    while (bytes_remaining) {
+        std::string data(4096, char(byte));
+        if (!android::base::WriteFully(snapshot_fd, data.data(), data.size())) {
+            ASSERT_EQ(errno, EIO);
+            break;
+        }
+        bytes_remaining -= data.size();
+    }
+
+    // If writes succeed (because they are buffered), then we should expect an
+    // fsync to fail with EIO.
+    if (!bytes_remaining) {
+        ASSERT_EQ(fsync(snapshot_fd), -1);
+        ASSERT_EQ(errno, EIO);
+    }
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+
+    vector<DeviceMapper::TargetInfo> target_status;
+    ASSERT_TRUE(dm.GetTableStatus("libdm-test-dm-snapshot", &target_status));
+    ASSERT_EQ(target_status.size(), 1);
+    ASSERT_EQ(strncmp(target_status[0].spec.target_type, "snapshot", strlen("snapshot")), 0);
+
+    DmTargetSnapshot::Status status;
+    ASSERT_TRUE(DmTargetSnapshot::ParseStatusText(target_status[0].data, &status));
+    if (DmTargetSnapshot::ReportsOverflow("snapshot")) {
+        ASSERT_EQ(status.error, "Overflow");
+    } else {
+        ASSERT_EQ(status.error, "Invalid");
+    }
+}
+
+TEST(libdm, ParseStatusText) {
+    DmTargetSnapshot::Status status;
+
+    // Bad inputs
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("X", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123/456", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123 456", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123 456", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123 456 789", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123 456/789", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123/456/789", &status));
+    EXPECT_FALSE(DmTargetSnapshot::ParseStatusText("123 / 456 789", &status));
+
+    // Good input
+    EXPECT_TRUE(DmTargetSnapshot::ParseStatusText("123/456 789", &status));
+    EXPECT_EQ(status.sectors_allocated, 123);
+    EXPECT_EQ(status.total_sectors, 456);
+    EXPECT_EQ(status.metadata_sectors, 789);
+
+    // Known error codes
+    EXPECT_TRUE(DmTargetSnapshot::ParseStatusText("Invalid", &status));
+    EXPECT_TRUE(DmTargetSnapshot::ParseStatusText("Merge failed", &status));
+    EXPECT_TRUE(DmTargetSnapshot::ParseStatusText("Overflow", &status));
+}
+
+TEST(libdm, DmSnapshotMergePercent) {
+    DmTargetSnapshot::Status status;
+
+    // Correct input
+    status.sectors_allocated = 1000;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 0;
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status), 1.0);
+
+    status.sectors_allocated = 500;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 0;
+    EXPECT_GE(DmTargetSnapshot::MergePercent(status), 49.0);
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status), 51.0);
+
+    status.sectors_allocated = 0;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 0;
+    EXPECT_GE(DmTargetSnapshot::MergePercent(status), 99.0);
+
+    status.sectors_allocated = 500;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 500;
+    EXPECT_GE(DmTargetSnapshot::MergePercent(status), 99.0);
+
+    status.sectors_allocated = 500;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 0;
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status, 500), 1.0);
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status, 1000), 51.0);
+    EXPECT_GE(DmTargetSnapshot::MergePercent(status, 1000), 49.0);
+
+    // Robustness
+    status.sectors_allocated = 2000;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 0;
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status), 0.0);
+
+    status.sectors_allocated = 2000;
+    status.total_sectors = 1000;
+    status.metadata_sectors = 2000;
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status), 0.0);
+
+    status.sectors_allocated = 2000;
+    status.total_sectors = 0;
+    status.metadata_sectors = 2000;
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status), 0.0);
+
+    status.sectors_allocated = 1000;
+    status.total_sectors = 0;
+    status.metadata_sectors = 1000;
+    EXPECT_LE(DmTargetSnapshot::MergePercent(status, 0), 0.0);
+}
+
+TEST(libdm, CryptArgs) {
+    DmTargetCrypt target1(0, 512, "sha1", "abcdefgh", 50, "/dev/loop0", 100);
+    ASSERT_EQ(target1.name(), "crypt");
+    ASSERT_TRUE(target1.Valid());
+    ASSERT_EQ(target1.GetParameterString(), "sha1 abcdefgh 50 /dev/loop0 100");
+
+    DmTargetCrypt target2(0, 512, "sha1", "abcdefgh", 50, "/dev/loop0", 100);
+    target2.SetSectorSize(64);
+    target2.AllowDiscards();
+    target2.SetIvLargeSectors();
+    target2.AllowEncryptOverride();
+    ASSERT_EQ(target2.GetParameterString(),
+              "sha1 abcdefgh 50 /dev/loop0 100 4 allow_discards allow_encrypt_override "
+              "iv_large_sectors sector_size:64");
+}
+
+TEST(libdm, DefaultKeyArgs) {
+    DmTargetDefaultKey target(0, 4096, "aes-xts-plain64", "abcdef0123456789", "/dev/loop0", 0);
+    target.SetSetDun();
+    ASSERT_EQ(target.name(), "default-key");
+    ASSERT_TRUE(target.Valid());
+    // TODO: Add case for wrapped key enabled
+    ASSERT_EQ(target.GetParameterString(),
+              "aes-xts-plain64 abcdef0123456789 0 /dev/loop0 0 3 allow_discards sector_size:4096 "
+              "iv_large_sectors");
+}
+
+TEST(libdm, DefaultKeyLegacyArgs) {
+    DmTargetDefaultKey target(0, 4096, "AES-256-XTS", "abcdef0123456789", "/dev/loop0", 0);
+    target.SetUseLegacyOptionsFormat();
+    ASSERT_EQ(target.name(), "default-key");
+    ASSERT_TRUE(target.Valid());
+    ASSERT_EQ(target.GetParameterString(), "AES-256-XTS abcdef0123456789 /dev/loop0 0");
+}
+
+TEST(libdm, DeleteDeviceWithTimeout) {
+    unique_fd tmp(CreateTempFile("file_1", 4096));
+    ASSERT_GE(tmp, 0);
+    LoopDevice loop(tmp, 10s);
+    ASSERT_TRUE(loop.valid());
+
+    DmTable table;
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(0, 1, loop.device(), 0));
+    ASSERT_TRUE(table.valid());
+    TempDevice dev("libdm-test-dm-linear", table);
+    ASSERT_TRUE(dev.valid());
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+
+    std::string path;
+    ASSERT_TRUE(dm.GetDmDevicePathByName("libdm-test-dm-linear", &path));
+    ASSERT_EQ(0, access(path.c_str(), F_OK));
+
+    ASSERT_TRUE(dm.DeleteDevice("libdm-test-dm-linear", 5s));
+    ASSERT_EQ(DmDeviceState::INVALID, dm.GetState("libdm-test-dm-linear"));
+    ASSERT_NE(0, access(path.c_str(), F_OK));
+    ASSERT_EQ(ENOENT, errno);
+}
+
+TEST(libdm, IsDmBlockDevice) {
+    unique_fd tmp(CreateTempFile("file_1", 4096));
+    ASSERT_GE(tmp, 0);
+    LoopDevice loop(tmp, 10s);
+    ASSERT_TRUE(loop.valid());
+    ASSERT_TRUE(android::base::StartsWith(loop.device(), "/dev/block"));
+
+    DmTable table;
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(0, 1, loop.device(), 0));
+    ASSERT_TRUE(table.valid());
+
+    TempDevice dev("libdm-test-dm-linear", table);
+    ASSERT_TRUE(dev.valid());
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    ASSERT_TRUE(dm.IsDmBlockDevice(dev.path()));
+    ASSERT_FALSE(dm.IsDmBlockDevice(loop.device()));
+}
+
+TEST(libdm, GetDmDeviceNameByPath) {
+    unique_fd tmp(CreateTempFile("file_1", 4096));
+    ASSERT_GE(tmp, 0);
+    LoopDevice loop(tmp, 10s);
+    ASSERT_TRUE(loop.valid());
+    ASSERT_TRUE(android::base::StartsWith(loop.device(), "/dev/block"));
+
+    DmTable table;
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(0, 1, loop.device(), 0));
+    ASSERT_TRUE(table.valid());
+
+    TempDevice dev("libdm-test-dm-linear", table);
+    ASSERT_TRUE(dev.valid());
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    // Not a dm device, GetDmDeviceNameByPath will return std::nullopt.
+    ASSERT_FALSE(dm.GetDmDeviceNameByPath(loop.device()));
+    auto name = dm.GetDmDeviceNameByPath(dev.path());
+    ASSERT_EQ("libdm-test-dm-linear", *name);
+}
+
+TEST(libdm, GetParentBlockDeviceByPath) {
+    unique_fd tmp(CreateTempFile("file_1", 4096));
+    ASSERT_GE(tmp, 0);
+    LoopDevice loop(tmp, 10s);
+    ASSERT_TRUE(loop.valid());
+    ASSERT_TRUE(android::base::StartsWith(loop.device(), "/dev/block"));
+
+    DmTable table;
+    ASSERT_TRUE(table.Emplace<DmTargetLinear>(0, 1, loop.device(), 0));
+    ASSERT_TRUE(table.valid());
+
+    TempDevice dev("libdm-test-dm-linear", table);
+    ASSERT_TRUE(dev.valid());
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    ASSERT_FALSE(dm.GetParentBlockDeviceByPath(loop.device()));
+    auto sub_block_device = dm.GetParentBlockDeviceByPath(dev.path());
+    ASSERT_EQ(loop.device(), *sub_block_device);
+}
diff --git a/fs_mgr/libdm/include/libdm/dm.h b/fs_mgr/libdm/include/libdm/dm.h
index 28e6e01..abe9c4c 100644
--- a/fs_mgr/libdm/include/libdm/dm.h
+++ b/fs_mgr/libdm/include/libdm/dm.h
@@ -20,11 +20,14 @@
 #include <fcntl.h>
 #include <linux/dm-ioctl.h>
 #include <linux/kdev_t.h>
+#include <linux/types.h>
 #include <stdint.h>
 #include <sys/sysmacros.h>
 #include <unistd.h>
 
+#include <chrono>
 #include <memory>
+#include <optional>
 #include <string>
 #include <utility>
 #include <vector>
@@ -37,13 +40,15 @@
 #define DM_VERSION2 (0)
 
 #define DM_ALIGN_MASK (7)
-#define DM_ALIGN(x) ((x + DM_ALIGN_MASK) & ~DM_ALIGN_MASK)
+#define DM_ALIGN(x) (((x) + DM_ALIGN_MASK) & ~DM_ALIGN_MASK)
 
 namespace android {
 namespace dm {
 
 enum class DmDeviceState { INVALID, SUSPENDED, ACTIVE };
 
+static constexpr uint64_t kSectorSize = 512;
+
 class DeviceMapper final {
   public:
     class DmBlockDevice final {
@@ -68,21 +73,71 @@
         uint64_t dev_;
     };
 
+    class Info {
+        uint32_t flags_;
+
+      public:
+        explicit Info(uint32_t flags) : flags_(flags) {}
+
+        bool IsActiveTablePresent() const { return flags_ & DM_ACTIVE_PRESENT_FLAG; }
+        bool IsBufferFull() const { return flags_ & DM_BUFFER_FULL_FLAG; }
+        bool IsInactiveTablePresent() const { return flags_ & DM_INACTIVE_PRESENT_FLAG; }
+        bool IsReadOnly() const { return flags_ & DM_READONLY_FLAG; }
+        bool IsSuspended() const { return flags_ & DM_SUSPEND_FLAG; }
+    };
+
     // Removes a device mapper device with the given name.
     // Returns 'true' on success, false otherwise.
     bool DeleteDevice(const std::string& name);
+    bool DeleteDeviceIfExists(const std::string& name);
+    // Removes a device mapper device with the given name and waits for |timeout_ms| milliseconds
+    // for the corresponding block device to be deleted.
+    bool DeleteDevice(const std::string& name, const std::chrono::milliseconds& timeout_ms);
+    bool DeleteDeviceIfExists(const std::string& name, const std::chrono::milliseconds& timeout_ms);
 
-    // Reads the device mapper table from the device with given anme and
-    // returns it in a DmTable object.
-    const std::unique_ptr<DmTable> table(const std::string& name) const;
+    // Fetches and returns the complete state of the underlying device mapper
+    // device with given name.
+    std::optional<Info> GetDetailedInfo(const std::string& name) const;
 
     // Returns the current state of the underlying device mapper device
     // with given name.
     // One of INVALID, SUSPENDED or ACTIVE.
     DmDeviceState GetState(const std::string& name) const;
 
+    // Puts the given device to the specified status, which must be either:
+    // - SUSPENDED: suspend the device, or
+    // - ACTIVE: resumes the device.
+    bool ChangeState(const std::string& name, DmDeviceState state);
+
     // Creates a device, loads the given table, and activates it. If the device
     // is not able to be activated, it is destroyed, and false is returned.
+    // After creation, |path| contains the result of calling
+    // GetDmDevicePathByName, and the path is guaranteed to exist. If after
+    // |timeout_ms| the path is not available, the device will be deleted and
+    // this function will return false.
+    //
+    // This variant must be used when depending on the device path. The
+    // following manual sequence should not be used:
+    //
+    //   1. CreateDevice(name, table)
+    //   2. GetDmDevicePathByName(name, &path)
+    //   3. fs_mgr::WaitForFile(path, <timeout>)
+    //
+    // This sequence has a race condition where, if another process deletes a
+    // device, CreateDevice may acquire the same path. When this happens, the
+    // WaitForFile() may early-return since ueventd has not yet processed all
+    // of the outstanding udev events. The caller may unexpectedly get an
+    // ENOENT on a system call using the affected path.
+    //
+    // If |timeout_ms| is 0ms, then this function will return true whether or
+    // not |path| is available. It is the caller's responsibility to ensure
+    // there are no races.
+    bool CreateDevice(const std::string& name, const DmTable& table, std::string* path,
+                      const std::chrono::milliseconds& timeout_ms);
+
+    // Create a device and activate the given table, without waiting to acquire
+    // a valid path. If the caller will use GetDmDevicePathByName(), it should
+    // use the timeout variant above.
     bool CreateDevice(const std::string& name, const DmTable& table);
 
     // Loads the device mapper table from parameter into the underlying device
@@ -96,6 +151,10 @@
     // successfully read and stored in 'targets'. Returns 'false' otherwise.
     bool GetAvailableTargets(std::vector<DmTargetTypeInfo>* targets);
 
+    // Finds a target by name and returns its information if found. |info| may
+    // be null to check for the existence of a target.
+    bool GetTargetByName(const std::string& name, DmTargetTypeInfo* info);
+
     // Return 'true' if it can successfully read the list of device mapper block devices
     // currently created. 'devices' will be empty if the kernel interactions
     // were successful and there are no block devices at the moment. Returns
@@ -105,8 +164,28 @@
     // Returns the path to the device mapper device node in '/dev' corresponding to
     // 'name'. If the device does not exist, false is returned, and the path
     // parameter is not set.
+    //
+    // This returns a path in the format "/dev/block/dm-N" that can be easily
+    // re-used with sysfs.
+    //
+    // WaitForFile() should not be used in conjunction with this call, since it
+    // could race with ueventd.
     bool GetDmDevicePathByName(const std::string& name, std::string* path);
 
+    // Returns a device's unique path as generated by ueventd. This will return
+    // true as long as the device has been created, even if ueventd has not
+    // processed it yet.
+    //
+    // The formatting of this path is /dev/block/mapper/by-uuid/<uuid>.
+    bool GetDeviceUniquePath(const std::string& name, std::string* path);
+
+    // Returns the dev_t for the named device-mapper node.
+    bool GetDeviceNumber(const std::string& name, dev_t* dev);
+
+    // Returns a major:minor string for the named device-mapper node, that can
+    // be used as inputs to DmTargets that take a block device.
+    bool GetDeviceString(const std::string& name, std::string* dev);
+
     // The only way to create a DeviceMapper object.
     static DeviceMapper& Instance();
 
@@ -123,8 +202,11 @@
     struct TargetInfo {
         struct dm_target_spec spec;
         std::string data;
+        TargetInfo() {}
         TargetInfo(const struct dm_target_spec& spec, const std::string& data)
             : spec(spec), data(data) {}
+
+        bool IsOverflowSnapshot() const;
     };
     bool GetTableStatus(const std::string& name, std::vector<TargetInfo>* table);
 
@@ -132,6 +214,21 @@
     // mapper device from the kernel.
     bool GetTableInfo(const std::string& name, std::vector<TargetInfo>* table);
 
+    static std::string GetTargetType(const struct dm_target_spec& spec);
+
+    // Returns true if given path is a path to a dm block device.
+    bool IsDmBlockDevice(const std::string& path);
+
+    // Returns name of a dm-device with the given path, or std::nulloptr if given path is not a
+    // dm-device.
+    std::optional<std::string> GetDmDeviceNameByPath(const std::string& path);
+
+    // Returns a parent block device of a dm device with the given path, or std::nullopt if:
+    //  * Given path doesn't correspond to a dm device.
+    //  * A dm device is based on top of more than one block devices.
+    //  * A failure occurred.
+    std::optional<std::string> GetParentBlockDeviceByPath(const std::string& path);
+
   private:
     // Maximum possible device mapper targets registered in the kernel.
     // This is only used to read the list of targets from kernel so we allocate
@@ -144,18 +241,12 @@
     // limit we are imposing here of 256.
     static constexpr uint32_t kMaxPossibleDmDevices = 256;
 
+    bool CreateDevice(const std::string& name, const std::string& uuid = {});
     bool GetTable(const std::string& name, uint32_t flags, std::vector<TargetInfo>* table);
-
     void InitIo(struct dm_ioctl* io, const std::string& name = std::string()) const;
 
     DeviceMapper();
 
-    // Creates a device mapper device with given name.
-    // Return 'true' on success and 'false' on failure to
-    // create OR if a device mapper device with the same name already
-    // exists.
-    bool CreateDevice(const std::string& name);
-
     int fd_;
     // Non-copyable & Non-movable
     DeviceMapper(const DeviceMapper&) = delete;
diff --git a/fs_mgr/libdm/include/libdm/dm_table.h b/fs_mgr/libdm/include/libdm/dm_table.h
index 5c639be..ee66653 100644
--- a/fs_mgr/libdm/include/libdm/dm_table.h
+++ b/fs_mgr/libdm/include/libdm/dm_table.h
@@ -43,12 +43,20 @@
     // successfully removed.
     bool RemoveTarget(std::unique_ptr<DmTarget>&& target);
 
+    // Adds a target, constructing it in-place for convenience. For example,
+    //
+    //   table.Emplace<DmTargetZero>(0, num_sectors);
+    template <typename T, typename... Args>
+    bool Emplace(Args&&... args) {
+        return AddTarget(std::make_unique<T>(std::forward<Args>(args)...));
+    }
+
     // Checks the table to make sure it is valid. i.e. Checks for range overlaps, range gaps
     // and returns 'true' if the table is ready to be loaded into kernel. Returns 'false' if the
     // table is malformed.
     bool valid() const;
 
-    // Returns the toatl number of targets.
+    // Returns the total number of targets.
     size_t num_targets() const { return targets_.size(); }
 
     // Returns the total size represented by the table in terms of number of 512-byte sectors.
diff --git a/fs_mgr/libdm/include/libdm/dm_target.h b/fs_mgr/libdm/include/libdm/dm_target.h
index 175b0f0..f986cfe 100644
--- a/fs_mgr/libdm/include/libdm/dm_target.h
+++ b/fs_mgr/libdm/include/libdm/dm_target.h
@@ -40,6 +40,18 @@
         return std::to_string(major_) + "." + std::to_string(minor_) + "." + std::to_string(patch_);
     }
 
+    uint32_t major_version() const { return major_; }
+    uint32_t minor_version() const { return minor_; }
+    uint32_t patch_level() const { return patch_; }
+
+    bool IsAtLeast(uint32_t major, uint32_t minor, uint32_t patch) const {
+        if (major_ > major) return true;
+        if (major_ < major) return false;
+        if (minor_ > minor) return true;
+        if (minor_ < minor) return false;
+        return patch_ >= patch;
+    }
+
   private:
     std::string name_;
     uint32_t major_;
@@ -163,11 +175,138 @@
     DmTargetBow(uint64_t start, uint64_t length, const std::string& target_string)
         : DmTarget(start, length), target_string_(target_string) {}
 
+    void SetBlockSize(uint32_t block_size) { block_size_ = block_size; }
+
     std::string name() const override { return "bow"; }
-    std::string GetParameterString() const override { return target_string_; }
+    std::string GetParameterString() const override;
 
   private:
     std::string target_string_;
+    uint32_t block_size_ = 0;
+};
+
+enum class SnapshotStorageMode {
+    // The snapshot will be persisted to the COW device.
+    Persistent,
+    // The snapshot will be lost on reboot.
+    Transient,
+    // The snapshot will be merged from the COW device into the base device,
+    // in the background.
+    Merge
+};
+
+// Writes to a snapshot device will be written to the given COW device. Reads
+// will read from the COW device or base device. The chunk size is specified
+// in sectors.
+class DmTargetSnapshot final : public DmTarget {
+  public:
+    DmTargetSnapshot(uint64_t start, uint64_t length, const std::string& base_device,
+                     const std::string& cow_device, SnapshotStorageMode mode, uint64_t chunk_size)
+        : DmTarget(start, length),
+          base_device_(base_device),
+          cow_device_(cow_device),
+          mode_(mode),
+          chunk_size_(chunk_size) {}
+
+    std::string name() const override;
+    std::string GetParameterString() const override;
+    bool Valid() const override { return true; }
+
+    struct Status {
+        uint64_t sectors_allocated;
+        uint64_t total_sectors;
+        uint64_t metadata_sectors;
+        std::string error;
+    };
+
+    static double MergePercent(const Status& status, uint64_t sectors_initial = 0);
+    static bool ParseStatusText(const std::string& text, Status* status);
+    static bool ReportsOverflow(const std::string& target_type);
+    static bool GetDevicesFromParams(const std::string& params, std::string* base_device,
+                                     std::string* cow_device);
+
+  private:
+    std::string base_device_;
+    std::string cow_device_;
+    SnapshotStorageMode mode_;
+    uint64_t chunk_size_;
+};
+
+// snapshot-origin will read/write directly to the backing device, updating any
+// snapshot devices with a matching origin.
+class DmTargetSnapshotOrigin final : public DmTarget {
+  public:
+    DmTargetSnapshotOrigin(uint64_t start, uint64_t length, const std::string& device)
+        : DmTarget(start, length), device_(device) {}
+
+    std::string name() const override { return "snapshot-origin"; }
+    std::string GetParameterString() const override { return device_; }
+    bool Valid() const override { return true; }
+
+  private:
+    std::string device_;
+};
+
+class DmTargetCrypt final : public DmTarget {
+  public:
+    DmTargetCrypt(uint64_t start, uint64_t length, const std::string& cipher,
+                  const std::string& key, uint64_t iv_sector_offset, const std::string& device,
+                  uint64_t device_sector)
+        : DmTarget(start, length),
+          cipher_(cipher),
+          key_(key),
+          iv_sector_offset_(iv_sector_offset),
+          device_(device),
+          device_sector_(device_sector) {}
+
+    void AllowDiscards() { allow_discards_ = true; }
+    void AllowEncryptOverride() { allow_encrypt_override_ = true; }
+    void SetIvLargeSectors() { iv_large_sectors_ = true; }
+    void SetSectorSize(uint32_t sector_size) { sector_size_ = sector_size; }
+
+    std::string name() const override { return "crypt"; }
+    bool Valid() const override { return true; }
+    std::string GetParameterString() const override;
+
+  private:
+    std::string cipher_;
+    std::string key_;
+    uint64_t iv_sector_offset_;
+    std::string device_;
+    uint64_t device_sector_;
+    bool allow_discards_ = false;
+    bool allow_encrypt_override_ = false;
+    bool iv_large_sectors_ = false;
+    uint32_t sector_size_ = 0;
+};
+
+class DmTargetDefaultKey final : public DmTarget {
+  public:
+    DmTargetDefaultKey(uint64_t start, uint64_t length, const std::string& cipher,
+                       const std::string& key, const std::string& blockdev, uint64_t start_sector)
+        : DmTarget(start, length),
+          cipher_(cipher),
+          key_(key),
+          blockdev_(blockdev),
+          start_sector_(start_sector) {}
+
+    std::string name() const override { return kName; }
+    bool Valid() const override;
+    std::string GetParameterString() const override;
+    void SetUseLegacyOptionsFormat() { use_legacy_options_format_ = true; }
+    void SetSetDun() { set_dun_ = true; }
+    void SetWrappedKeyV0() { is_hw_wrapped_ = true; }
+
+  private:
+    inline static const std::string kName = "default-key";
+
+    std::string cipher_;
+    std::string key_;
+    std::string blockdev_;
+    uint64_t start_sector_;
+    bool use_legacy_options_format_ = false;
+    bool set_dun_ = false;
+    bool is_hw_wrapped_ = false;
 };
 
 }  // namespace dm
diff --git a/fs_mgr/libdm/include/libdm/loop_control.h b/fs_mgr/libdm/include/libdm/loop_control.h
index e6e83f4..ad53c11 100644
--- a/fs_mgr/libdm/include/libdm/loop_control.h
+++ b/fs_mgr/libdm/include/libdm/loop_control.h
@@ -17,6 +17,7 @@
 #ifndef _LIBDM_LOOP_CONTROL_H_
 #define _LIBDM_LOOP_CONTROL_H_
 
+#include <chrono>
 #include <string>
 
 #include <android-base/unique_fd.h>
@@ -29,12 +30,22 @@
     LoopControl();
 
     // Attaches the file specified by 'file_fd' to the loop device specified
-    // by 'loopdev'
-    bool Attach(int file_fd, std::string* loopdev) const;
+    // by 'loopdev'. It is possible that in between allocating and attaching
+    // a loop device, another process attaches to the chosen loop device. If
+    // this happens, Attach() will retry for up to |timeout_ms|. The timeout
+    // should not be zero.
+    //
+    // The caller does not have to call WaitForFile(); it is implicitly called.
+    // The given |timeout_ms| covers both potential sources of timeout.
+    bool Attach(int file_fd, const std::chrono::milliseconds& timeout_ms,
+                std::string* loopdev) const;
 
     // Detach the loop device given by 'loopdev' from the attached backing file.
     bool Detach(const std::string& loopdev) const;
 
+    // Enable Direct I/O on a loop device. This requires kernel 4.9+.
+    static bool EnableDirectIo(int fd);
+
     LoopControl(const LoopControl&) = delete;
     LoopControl& operator=(const LoopControl&) = delete;
     LoopControl& operator=(LoopControl&&) = default;
@@ -53,13 +64,14 @@
   public:
     // Create a loop device for the given file descriptor. It is closed when
     // LoopDevice is destroyed only if auto_close is true.
-    LoopDevice(int fd, bool auto_close = false);
+    LoopDevice(android::base::borrowed_fd fd, const std::chrono::milliseconds& timeout_ms,
+               bool auto_close = false);
     // Create a loop device for the given file path. It will be opened for
     // reading and writing and closed when the loop device is detached.
-    explicit LoopDevice(const std::string& path);
+    LoopDevice(const std::string& path, const std::chrono::milliseconds& timeout_ms);
     ~LoopDevice();
 
-    bool valid() const { return fd_ != -1 && !device_.empty(); }
+    bool valid() const { return valid_; }
     const std::string& device() const { return device_; }
 
     LoopDevice(const LoopDevice&) = delete;
@@ -68,12 +80,13 @@
     LoopDevice(LoopDevice&&) = default;
 
   private:
-    void Init();
+    void Init(const std::chrono::milliseconds& timeout_ms);
 
-    android::base::unique_fd fd_;
-    bool owns_fd_;
+    android::base::borrowed_fd fd_;
+    android::base::unique_fd owned_fd_;
     std::string device_;
     LoopControl control_;
+    bool valid_ = false;
 };
 
 }  // namespace dm
diff --git a/fs_mgr/libdm/loop_control.cpp b/fs_mgr/libdm/loop_control.cpp
index 0beb1a6..2e40a18 100644
--- a/fs_mgr/libdm/loop_control.cpp
+++ b/fs_mgr/libdm/loop_control.cpp
@@ -27,6 +27,8 @@
 #include <android-base/stringprintf.h>
 #include <android-base/unique_fd.h>
 
+#include "utility.h"
+
 namespace android {
 namespace dm {
 
@@ -37,21 +39,40 @@
     }
 }
 
-bool LoopControl::Attach(int file_fd, std::string* loopdev) const {
-    if (!FindFreeLoopDevice(loopdev)) {
-        LOG(ERROR) << "Failed to attach, no free loop devices";
-        return false;
-    }
+bool LoopControl::Attach(int file_fd, const std::chrono::milliseconds& timeout_ms,
+                         std::string* loopdev) const {
+    auto start_time = std::chrono::steady_clock::now();
+    auto condition = [&]() -> WaitResult {
+        if (!FindFreeLoopDevice(loopdev)) {
+            LOG(ERROR) << "Failed to attach, no free loop devices";
+            return WaitResult::Fail;
+        }
 
-    android::base::unique_fd loop_fd(TEMP_FAILURE_RETRY(open(loopdev->c_str(), O_RDWR | O_CLOEXEC)));
-    if (loop_fd < 0) {
-        PLOG(ERROR) << "Failed to open: " << *loopdev;
-        return false;
-    }
+        auto now = std::chrono::steady_clock::now();
+        auto time_elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
+        if (!WaitForFile(*loopdev, timeout_ms - time_elapsed)) {
+            LOG(ERROR) << "Timed out waiting for path: " << *loopdev;
+            return WaitResult::Fail;
+        }
 
-    int rc = ioctl(loop_fd, LOOP_SET_FD, file_fd);
-    if (rc < 0) {
-        PLOG(ERROR) << "Failed LOOP_SET_FD";
+        android::base::unique_fd loop_fd(
+                TEMP_FAILURE_RETRY(open(loopdev->c_str(), O_RDWR | O_CLOEXEC)));
+        if (loop_fd < 0) {
+            PLOG(ERROR) << "Failed to open: " << *loopdev;
+            return WaitResult::Fail;
+        }
+
+        if (int rc = ioctl(loop_fd, LOOP_SET_FD, file_fd); rc == 0) {
+            return WaitResult::Done;
+        }
+        if (errno != EBUSY) {
+            PLOG(ERROR) << "Failed LOOP_SET_FD";
+            return WaitResult::Fail;
+        }
+        return WaitResult::Wait;
+    };
+    if (!WaitForCondition(condition, timeout_ms)) {
+        LOG(ERROR) << "Timed out trying to acquire a loop device";
         return false;
     }
     return true;
@@ -91,30 +112,55 @@
     return true;
 }
 
-LoopDevice::LoopDevice(int fd, bool auto_close) : fd_(fd), owns_fd_(auto_close) {
-    Init();
+bool LoopControl::EnableDirectIo(int fd) {
+#if !defined(LOOP_SET_BLOCK_SIZE)
+    static constexpr int LOOP_SET_BLOCK_SIZE = 0x4C09;
+#endif
+#if !defined(LOOP_SET_DIRECT_IO)
+    static constexpr int LOOP_SET_DIRECT_IO = 0x4C08;
+#endif
+
+    // Note: the block size has to be >= the logical block size of the underlying
+    // block device, *not* the filesystem block size.
+    if (ioctl(fd, LOOP_SET_BLOCK_SIZE, 4096)) {
+        PLOG(ERROR) << "Could not set loop device block size";
+        return false;
+    }
+    if (ioctl(fd, LOOP_SET_DIRECT_IO, 1)) {
+        PLOG(ERROR) << "Could not set loop direct IO";
+        return false;
+    }
+    return true;
 }
 
-LoopDevice::LoopDevice(const std::string& path) : fd_(-1), owns_fd_(true) {
-    fd_.reset(open(path.c_str(), O_RDWR | O_CLOEXEC));
-    if (fd_ < -1) {
+LoopDevice::LoopDevice(android::base::borrowed_fd fd, const std::chrono::milliseconds& timeout_ms,
+                       bool auto_close)
+    : fd_(fd), owned_fd_(-1) {
+    if (auto_close) {
+        owned_fd_.reset(fd.get());
+    }
+    Init(timeout_ms);
+}
+
+LoopDevice::LoopDevice(const std::string& path, const std::chrono::milliseconds& timeout_ms)
+    : fd_(-1), owned_fd_(-1) {
+    owned_fd_.reset(open(path.c_str(), O_RDWR | O_CLOEXEC));
+    if (owned_fd_ == -1) {
         PLOG(ERROR) << "open failed for " << path;
         return;
     }
-    Init();
+    fd_ = owned_fd_;
+    Init(timeout_ms);
 }
 
 LoopDevice::~LoopDevice() {
     if (valid()) {
         control_.Detach(device_);
     }
-    if (!owns_fd_) {
-        (void)fd_.release();
-    }
 }
 
-void LoopDevice::Init() {
-    control_.Attach(fd_, &device_);
+void LoopDevice::Init(const std::chrono::milliseconds& timeout_ms) {
+    valid_ = control_.Attach(fd_.get(), timeout_ms, &device_);
 }
 
 }  // namespace dm
diff --git a/fs_mgr/libdm/loop_control_test.cpp b/fs_mgr/libdm/loop_control_test.cpp
index 08bdc00..0749f26 100644
--- a/fs_mgr/libdm/loop_control_test.cpp
+++ b/fs_mgr/libdm/loop_control_test.cpp
@@ -53,7 +53,7 @@
     unique_fd fd = TempFile();
     ASSERT_GE(fd, 0);
 
-    LoopDevice loop(fd);
+    LoopDevice loop(fd, 10s);
     ASSERT_TRUE(loop.valid());
 
     char buffer[6];
diff --git a/fs_mgr/libdm/test_util.h b/fs_mgr/libdm/test_util.h
index 96b051c..6671364 100644
--- a/fs_mgr/libdm/test_util.h
+++ b/fs_mgr/libdm/test_util.h
@@ -20,8 +20,12 @@
 #include <android-base/unique_fd.h>
 #include <stddef.h>
 
+#include <chrono>
 #include <string>
 
+#include <libdm/dm.h>
+#include <libdm/dm_table.h>
+
 namespace android {
 namespace dm {
 
@@ -29,6 +33,50 @@
 // created with a fixed size.
 android::base::unique_fd CreateTempFile(const std::string& name, size_t size);
 
+// Helper to ensure that device mapper devices are released.
+class TempDevice {
+  public:
+    TempDevice(const std::string& name, const DmTable& table)
+        : dm_(DeviceMapper::Instance()), name_(name), valid_(false) {
+        valid_ = dm_.CreateDevice(name, table, &path_, std::chrono::seconds(5));
+    }
+    TempDevice(TempDevice&& other) noexcept
+        : dm_(other.dm_), name_(other.name_), path_(other.path_), valid_(other.valid_) {
+        other.valid_ = false;
+    }
+    ~TempDevice() {
+        if (valid_) {
+            dm_.DeleteDevice(name_);
+        }
+    }
+    bool Destroy() {
+        if (!valid_) {
+            return false;
+        }
+        valid_ = false;
+        return dm_.DeleteDevice(name_);
+    }
+    std::string path() const { return path_; }
+    const std::string& name() const { return name_; }
+    bool valid() const { return valid_; }
+
+    TempDevice(const TempDevice&) = delete;
+    TempDevice& operator=(const TempDevice&) = delete;
+
+    TempDevice& operator=(TempDevice&& other) noexcept {
+        name_ = other.name_;
+        valid_ = other.valid_;
+        other.valid_ = false;
+        return *this;
+    }
+
+  private:
+    DeviceMapper& dm_;
+    std::string name_;
+    std::string path_;
+    bool valid_;
+};
+
 }  // namespace dm
 }  // namespace android
 
diff --git a/fs_mgr/libdm/utility.cpp b/fs_mgr/libdm/utility.cpp
new file mode 100644
index 0000000..0eb59ab
--- /dev/null
+++ b/fs_mgr/libdm/utility.cpp
@@ -0,0 +1,76 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "utility.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <thread>
+
+#include <android-base/logging.h>
+
+using namespace std::literals;
+
+namespace android {
+namespace dm {
+
+bool WaitForCondition(const std::function<WaitResult()>& condition,
+                      const std::chrono::milliseconds& timeout_ms) {
+    auto start_time = std::chrono::steady_clock::now();
+    while (true) {
+        auto result = condition();
+        if (result == WaitResult::Done) return true;
+        if (result == WaitResult::Fail) return false;
+
+        std::this_thread::sleep_for(20ms);
+
+        auto now = std::chrono::steady_clock::now();
+        auto time_elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
+        if (time_elapsed > timeout_ms) return false;
+    }
+}
+
+bool WaitForFile(const std::string& path, const std::chrono::milliseconds& timeout_ms) {
+    auto condition = [&]() -> WaitResult {
+        // If the file exists but returns EPERM or something, we consider the
+        // condition met.
+        if (access(path.c_str(), F_OK) != 0) {
+            if (errno == ENOENT) {
+                return WaitResult::Wait;
+            }
+            PLOG(ERROR) << "access failed: " << path;
+            return WaitResult::Fail;
+        }
+        return WaitResult::Done;
+    };
+    return WaitForCondition(condition, timeout_ms);
+}
+
+bool WaitForFileDeleted(const std::string& path, const std::chrono::milliseconds& timeout_ms) {
+    auto condition = [&]() -> WaitResult {
+        if (access(path.c_str(), F_OK) == 0) {
+            return WaitResult::Wait;
+        }
+        if (errno != ENOENT) {
+            PLOG(ERROR) << "access failed: " << path;
+            return WaitResult::Fail;
+        }
+        return WaitResult::Done;
+    };
+    return WaitForCondition(condition, timeout_ms);
+}
+
+}  // namespace dm
+}  // namespace android
diff --git a/fs_mgr/libdm/utility.h b/fs_mgr/libdm/utility.h
new file mode 100644
index 0000000..58fa96b
--- /dev/null
+++ b/fs_mgr/libdm/utility.h
@@ -0,0 +1,31 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <chrono>
+#include <functional>
+
+namespace android {
+namespace dm {
+
+enum class WaitResult { Wait, Done, Fail };
+
+bool WaitForFile(const std::string& path, const std::chrono::milliseconds& timeout_ms);
+bool WaitForFileDeleted(const std::string& path, const std::chrono::milliseconds& timeout_ms);
+bool WaitForCondition(const std::function<WaitResult()>& condition,
+                      const std::chrono::milliseconds& timeout_ms);
+
+}  // namespace dm
+}  // namespace android
diff --git a/fs_mgr/libfiemap/Android.bp b/fs_mgr/libfiemap/Android.bp
new file mode 100644
index 0000000..976cd90
--- /dev/null
+++ b/fs_mgr/libfiemap/Android.bp
@@ -0,0 +1,138 @@
+//
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "libfiemap_headers",
+    recovery_available: true,
+    export_include_dirs: ["include"],
+}
+
+filegroup {
+    name: "libfiemap_srcs",
+    srcs: [
+        "fiemap_writer.cpp",
+        "fiemap_status.cpp",
+        "image_manager.cpp",
+        "metadata.cpp",
+        "split_fiemap_writer.cpp",
+        "utility.cpp",
+    ],
+}
+
+filegroup {
+    name: "libfiemap_binder_srcs",
+    srcs: [
+        "binder.cpp",
+    ],
+}
+
+cc_defaults {
+    name: "libfiemap_binder_defaults",
+    srcs: [":libfiemap_binder_srcs"],
+    whole_static_libs: [
+        "gsi_aidl_interface-cpp",
+        "libgsi",
+    ],
+    shared_libs: [
+        "libbinder",
+        "libutils",
+    ],
+}
+
+// Open up a passthrough IImageManager interface. Use libfiemap_binder whenever
+// possible. This should only be used when binder is not available.
+filegroup {
+    name: "libfiemap_passthrough_srcs",
+    srcs: [
+        "passthrough.cpp",
+    ],
+}
+
+cc_test {
+    name: "fiemap_writer_test",
+    static_libs: [
+        "libbase",
+        "libdm",
+        "libfs_mgr",
+        "liblog",
+        "libgsi",
+    ],
+
+    data: [
+        "testdata/unaligned_file",
+        "testdata/file_4k",
+        "testdata/file_32k",
+    ],
+
+    srcs: [
+        "fiemap_writer_test.cpp",
+    ],
+
+    test_suites: ["vts", "device-tests"],
+    auto_gen_config: true,
+    test_min_api_level: 29,
+    require_root: true,
+}
+
+cc_test {
+    name: "fiemap_image_test",
+    static_libs: [
+        "libdm",
+        "libext4_utils",
+        "libfs_mgr",
+        "liblp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libcrypto_utils",
+        "libcutils",
+        "liblog",
+    ],
+    srcs: [
+        "image_test.cpp",
+    ],
+    test_suites: ["device-tests"],
+    auto_gen_config: true,
+    require_root: true,
+}
+
+/* BUG(148874852) temporary test */
+cc_test {
+    name: "fiemap_image_test_presubmit",
+    cppflags: [
+        "-DSKIP_TEST_IN_PRESUBMIT",
+    ],
+    static_libs: [
+        "libdm",
+        "libext4_utils",
+        "libfs_mgr",
+        "liblp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libcrypto_utils",
+        "libcutils",
+        "liblog",
+    ],
+    srcs: [
+        "image_test.cpp",
+    ],
+    test_suites: ["device-tests"],
+    auto_gen_config: true,
+    require_root: true,
+}
diff --git a/fs_mgr/libfiemap/README.md b/fs_mgr/libfiemap/README.md
new file mode 100644
index 0000000..62d610a
--- /dev/null
+++ b/fs_mgr/libfiemap/README.md
@@ -0,0 +1,75 @@
+libfiemap
+=============
+
+`libfiemap` is a library for creating block-devices that are backed by
+storage in read-write partitions. It exists primary for gsid. Generally, the
+library works by using `libfiemap_writer` to allocate large files within
+filesystem, and then tracks their extents.
+
+There are three main uses for `libfiemap`:
+ - Creating images that will act as block devices. For example, gsid needs to
+   create a `system_gsi` image to store Dynamic System Updates.
+ - Mapping the image as a block device while /data is mounted. This is fairly
+   tricky and is described in more detail below.
+ - Mapping the image as a block device during first-stage init. This is simple
+   because it uses the same logic from dynamic partitions.
+
+Image creation is done through `SplitFiemap`. Depending on the file system,
+a large image may have to be split into multiple files. On Ext4 the limit is
+16GiB and on FAT32 it's 4GiB. Images are saved into `/data/gsi/<name>/`
+where `<name>` is chosen by the process requesting the image.
+
+At the same time, a file called `/metadata/gsi/<name>/lp_metadata` is created.
+This is a super partition header that allows first-stage init to create dynamic
+partitions from the image files. It also tracks the canonical size of the image,
+since the file size may be larger due to alignment.
+
+Mapping
+-------
+
+It is easy to make block devices out of blocks on `/data` when it is not
+mounted, so first-stage init has no issues mapping dynamic partitions from
+images. After `/data` is mounted however, there are two problems:
+ - `/data` is encrypted.
+ - `/dev/block/by-name/data` may be marked as in-use.
+
+We break the problem down into three scenarios.
+
+### FDE and Metadata Encrypted Devices
+
+When FDE or metadata encryption is used, `/data` is not mounted from
+`/dev/block/by-name/data`. Instead, it is mounted from an intermediate
+`dm-crypt` or `dm-default-key` device. This means the underlying device is
+not marked in use, and we can create new dm-linear devices on top of it.
+
+On these devices, a block device for an image will consist of a single
+device-mapper device with a `dm-linear` table entry for each extent in the
+backing file.
+
+### Unencrypted and FBE-encrypted Devices
+
+When a device is unencrypted, or is encrypted with FBE but not metadata
+encryption, we instead use a loop device with `LOOP_SET_DIRECT_IO` enabled.
+Since `/data/gsi` has encryption disabled, this means the raw blocks will be
+unencrypted as well.
+
+### Split Images
+
+If an image was too large to store a single file on the underlying filesystem,
+on an FBE/unencrypted device we will have multiple loop devices. In this case,
+we create a device-mapper device as well. For each loop device it will have one
+`dm-linear` table entry spanning the length of the device.
+
+State Tracking
+--------------
+
+It's important that we know whether or not an image is currently in-use by a
+block device. It could be catastrophic to write to a dm-linear device if the
+underlying blocks are no longer owned by the original file. Thus, when mapping
+an image, we create a property called `gsid.mapped_image.<name>` and set it to
+the path of the block device.
+
+Additionally, we create a `/metadata/gsi/<subdir>/<name>.status` file. Each
+line in this file denotes a dependency on either a device-mapper node or a loop
+device. When deleting a block device, this file is used to release all
+resources.
diff --git a/fs_mgr/libfiemap/binder.cpp b/fs_mgr/libfiemap/binder.cpp
new file mode 100644
index 0000000..5e29d4e
--- /dev/null
+++ b/fs_mgr/libfiemap/binder.cpp
@@ -0,0 +1,253 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#if !defined(__ANDROID_RECOVERY__)
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/gsi/BnProgressCallback.h>
+#include <android/gsi/IGsiService.h>
+#include <binder/IServiceManager.h>
+#include <libfiemap/image_manager.h>
+#include <libgsi/libgsi.h>
+
+namespace android {
+namespace fiemap {
+
+using namespace android::gsi;
+using namespace std::chrono_literals;
+
+class ProgressCallback final : public BnProgressCallback {
+  public:
+    ProgressCallback(std::function<bool(uint64_t, uint64_t)>&& callback)
+        : callback_(std::move(callback)) {
+        CHECK(callback_);
+    }
+    android::binder::Status onProgress(int64_t current, int64_t total) {
+        if (callback_(static_cast<uint64_t>(current), static_cast<uint64_t>(total))) {
+            return android::binder::Status::ok();
+        }
+        return android::binder::Status::fromServiceSpecificError(UNKNOWN_ERROR,
+                                                                 "Progress callback failed");
+    }
+
+  private:
+    std::function<bool(uint64_t, uint64_t)> callback_;
+};
+
+class ImageManagerBinder final : public IImageManager {
+  public:
+    ImageManagerBinder(android::sp<IGsiService>&& service, android::sp<IImageService>&& manager);
+    FiemapStatus CreateBackingImage(const std::string& name, uint64_t size, int flags,
+                                    std::function<bool(uint64_t, uint64_t)>&& on_progress) override;
+    bool DeleteBackingImage(const std::string& name) override;
+    bool MapImageDevice(const std::string& name, const std::chrono::milliseconds& timeout_ms,
+                        std::string* path) override;
+    bool UnmapImageDevice(const std::string& name) override;
+    bool BackingImageExists(const std::string& name) override;
+    bool IsImageMapped(const std::string& name) override;
+    bool MapImageWithDeviceMapper(const IPartitionOpener& opener, const std::string& name,
+                                  std::string* dev) override;
+    FiemapStatus ZeroFillNewImage(const std::string& name, uint64_t bytes) override;
+    bool RemoveAllImages() override;
+    bool DisableImage(const std::string& name) override;
+    bool RemoveDisabledImages() override;
+    bool GetMappedImageDevice(const std::string& name, std::string* device) override;
+    bool MapAllImages(const std::function<bool(std::set<std::string>)>& init) override;
+
+    std::vector<std::string> GetAllBackingImages() override;
+
+  private:
+    android::sp<IGsiService> service_;
+    android::sp<IImageService> manager_;
+};
+
+static FiemapStatus ToFiemapStatus(const char* func, const binder::Status& status) {
+    if (!status.isOk()) {
+        LOG(ERROR) << func << " binder returned: " << status.toString8().string();
+        if (status.serviceSpecificErrorCode() != 0) {
+            return FiemapStatus::FromErrorCode(status.serviceSpecificErrorCode());
+        } else {
+            return FiemapStatus::Error();
+        }
+    }
+    return FiemapStatus::Ok();
+}
+
+ImageManagerBinder::ImageManagerBinder(android::sp<IGsiService>&& service,
+                                       android::sp<IImageService>&& manager)
+    : service_(std::move(service)), manager_(std::move(manager)) {}
+
+FiemapStatus ImageManagerBinder::CreateBackingImage(
+        const std::string& name, uint64_t size, int flags,
+        std::function<bool(uint64_t, uint64_t)>&& on_progress) {
+    sp<IProgressCallback> callback = nullptr;
+    if (on_progress) {
+        callback = new ProgressCallback(std::move(on_progress));
+    }
+    auto status = manager_->createBackingImage(name, size, flags, callback);
+    return ToFiemapStatus(__PRETTY_FUNCTION__, status);
+}
+
+bool ImageManagerBinder::DeleteBackingImage(const std::string& name) {
+    auto status = manager_->deleteBackingImage(name);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return true;
+}
+
+bool ImageManagerBinder::MapImageDevice(const std::string& name,
+                                        const std::chrono::milliseconds& timeout_ms,
+                                        std::string* path) {
+    int32_t timeout_ms_count =
+            static_cast<int32_t>(std::clamp<typename std::chrono::milliseconds::rep>(
+                    timeout_ms.count(), INT32_MIN, INT32_MAX));
+    MappedImage map;
+    auto status = manager_->mapImageDevice(name, timeout_ms_count, &map);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    *path = map.path;
+    return true;
+}
+
+bool ImageManagerBinder::UnmapImageDevice(const std::string& name) {
+    auto status = manager_->unmapImageDevice(name);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return true;
+}
+
+bool ImageManagerBinder::BackingImageExists(const std::string& name) {
+    bool retval;
+    auto status = manager_->backingImageExists(name, &retval);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return retval;
+}
+
+bool ImageManagerBinder::IsImageMapped(const std::string& name) {
+    bool retval;
+    auto status = manager_->isImageMapped(name, &retval);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return retval;
+}
+
+bool ImageManagerBinder::MapImageWithDeviceMapper(const IPartitionOpener& opener,
+                                                  const std::string& name, std::string* dev) {
+    (void)opener;
+    (void)name;
+    (void)dev;
+    LOG(ERROR) << "MapImageWithDeviceMapper is not available over binder.";
+    return false;
+}
+
+std::vector<std::string> ImageManagerBinder::GetAllBackingImages() {
+    std::vector<std::string> retval;
+    auto status = manager_->getAllBackingImages(&retval);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+    }
+    return retval;
+}
+
+FiemapStatus ImageManagerBinder::ZeroFillNewImage(const std::string& name, uint64_t bytes) {
+    auto status = manager_->zeroFillNewImage(name, bytes);
+    return ToFiemapStatus(__PRETTY_FUNCTION__, status);
+}
+
+bool ImageManagerBinder::RemoveAllImages() {
+    auto status = manager_->removeAllImages();
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return true;
+}
+
+bool ImageManagerBinder::DisableImage(const std::string&) {
+    LOG(ERROR) << __PRETTY_FUNCTION__ << " is not available over binder";
+    return false;
+}
+
+bool ImageManagerBinder::RemoveDisabledImages() {
+    auto status = manager_->removeDisabledImages();
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return true;
+}
+
+bool ImageManagerBinder::GetMappedImageDevice(const std::string& name, std::string* device) {
+    auto status = manager_->getMappedImageDevice(name, device);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return !device->empty();
+}
+
+bool ImageManagerBinder::MapAllImages(const std::function<bool(std::set<std::string>)>&) {
+    LOG(ERROR) << __PRETTY_FUNCTION__ << " not available over binder";
+    return false;
+}
+
+static sp<IGsiService> GetGsiService() {
+    auto sm = android::defaultServiceManager();
+    auto name = android::String16(kGsiServiceName);
+    android::sp<android::IBinder> res = sm->waitForService(name);
+    if (res) {
+        return android::interface_cast<IGsiService>(res);
+    }
+    return nullptr;
+}
+
+std::unique_ptr<IImageManager> IImageManager::Open(
+        const std::string& dir, const std::chrono::milliseconds& /*timeout_ms*/) {
+    android::sp<IGsiService> service = GetGsiService();
+    android::sp<IImageService> manager;
+
+    auto status = service->openImageService(dir, &manager);
+    if (!status.isOk() || !manager) {
+        LOG(ERROR) << "Could not acquire IImageManager: " << status.exceptionMessage().string();
+        return nullptr;
+    }
+    return std::make_unique<ImageManagerBinder>(std::move(service), std::move(manager));
+}
+
+}  // namespace fiemap
+}  // namespace android
+
+#endif  // __ANDROID_RECOVERY__
diff --git a/fs_mgr/libfiemap/fiemap_status.cpp b/fs_mgr/libfiemap/fiemap_status.cpp
new file mode 100644
index 0000000..92ac935
--- /dev/null
+++ b/fs_mgr/libfiemap/fiemap_status.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libfiemap/fiemap_status.h>
+
+namespace android::fiemap {
+
+// FiemapStatus -> string
+std::string FiemapStatus::string() const {
+    if (error_code() == ErrorCode::ERROR) {
+        return "Error";
+    }
+    return strerror(-static_cast<int>(error_code()));
+}
+
+// -errno -> known ErrorCode
+// unknown ErrorCode -> known ErrorCode
+FiemapStatus::ErrorCode FiemapStatus::CastErrorCode(int error_code) {
+    switch (error_code) {
+        case static_cast<int32_t>(ErrorCode::SUCCESS):
+        case static_cast<int32_t>(ErrorCode::NO_SPACE):
+            return static_cast<ErrorCode>(error_code);
+        case static_cast<int32_t>(ErrorCode::ERROR):
+        default:
+            return ErrorCode::ERROR;
+    }
+}
+
+}  // namespace android::fiemap
diff --git a/fs_mgr/libfiemap/fiemap_writer.cpp b/fs_mgr/libfiemap/fiemap_writer.cpp
new file mode 100644
index 0000000..4dd4bcc
--- /dev/null
+++ b/fs_mgr/libfiemap/fiemap_writer.cpp
@@ -0,0 +1,807 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libfiemap/fiemap_writer.h>
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <linux/fs.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+#include <sys/vfs.h>
+#include <unistd.h>
+
+#include <limits>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <libdm/dm.h>
+#include "utility.h"
+
+namespace android {
+namespace fiemap {
+
+using namespace android::dm;
+
+// We cap the maximum number of extents as a sanity measure.
+static constexpr uint32_t kMaxExtents = 50000;
+
+// TODO: Fallback to using fibmap if FIEMAP_EXTENT_MERGED is set.
+static constexpr const uint32_t kUnsupportedExtentFlags =
+        FIEMAP_EXTENT_UNKNOWN | FIEMAP_EXTENT_UNWRITTEN | FIEMAP_EXTENT_DELALLOC |
+        FIEMAP_EXTENT_NOT_ALIGNED | FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_DATA_TAIL |
+        FIEMAP_EXTENT_UNWRITTEN | FIEMAP_EXTENT_SHARED | FIEMAP_EXTENT_MERGED;
+
+// Large file support must be enabled.
+static_assert(sizeof(off_t) == sizeof(uint64_t));
+
+static inline void cleanup(const std::string& file_path, bool created) {
+    if (created) {
+        unlink(file_path.c_str());
+    }
+}
+
+static bool ValidateDmTarget(const DeviceMapper::TargetInfo& target) {
+    const auto& entry = target.spec;
+    if (entry.sector_start != 0) {
+        LOG(INFO) << "Stopping at target with non-zero starting sector";
+        return false;
+    }
+
+    auto target_type = DeviceMapper::GetTargetType(entry);
+    if (target_type == "bow" || target_type == "default-key" || target_type == "crypt") {
+        return true;
+    }
+    if (target_type == "linear") {
+        auto pieces = android::base::Split(target.data, " ");
+        if (pieces[1] != "0") {
+            LOG(INFO) << "Stopping at complex linear target with non-zero starting sector: "
+                      << pieces[1];
+            return false;
+        }
+        return true;
+    }
+
+    LOG(INFO) << "Stopping at complex target type " << target_type;
+    return false;
+}
+
+static bool DeviceMapperStackPop(const std::string& bdev, std::string* bdev_raw) {
+    *bdev_raw = bdev;
+
+    if (!::android::base::StartsWith(bdev, "dm-")) {
+        // We are at the bottom of the device mapper stack.
+        return true;
+    }
+
+    // Get the device name.
+    auto dm_name_file = "/sys/block/" + bdev + "/dm/name";
+    std::string dm_name;
+    if (!android::base::ReadFileToString(dm_name_file, &dm_name)) {
+        PLOG(ERROR) << "Could not read file: " << dm_name_file;
+        return false;
+    }
+    dm_name = android::base::Trim(dm_name);
+
+    auto& dm = DeviceMapper::Instance();
+    std::vector<DeviceMapper::TargetInfo> table;
+    if (!dm.GetTableInfo(dm_name, &table)) {
+        LOG(ERROR) << "Could not read device-mapper table for " << dm_name << " at " << bdev;
+        return false;
+    }
+
+    // The purpose of libfiemap is to provide an extent-based view into
+    // a file. This is difficult if devices are not layered in a 1:1 manner;
+    // we would have to translate and break up extents based on the actual
+    // block mapping. Since this is too complex, we simply stop processing
+    // the device-mapper stack if we encounter a complex case.
+    //
+    // It is up to the caller to decide whether stopping at a virtual block
+    // device is allowable. In most cases it is not, because we want either
+    // "userdata" or an external volume. It is useful for tests however.
+    // Callers can check by comparing the device number to that of userdata,
+    // or by checking whether is a device-mapper node.
+    if (table.size() > 1) {
+        LOG(INFO) << "Stopping at complex table for " << dm_name << " at " << bdev;
+        return true;
+    }
+    if (!ValidateDmTarget(table[0])) {
+        return true;
+    }
+
+    auto dm_leaf_dir = "/sys/block/" + bdev + "/slaves";
+    auto d = std::unique_ptr<DIR, decltype(&closedir)>(opendir(dm_leaf_dir.c_str()), closedir);
+    if (d == nullptr) {
+        PLOG(ERROR) << "Failed to open: " << dm_leaf_dir;
+        return false;
+    }
+
+    struct dirent* de;
+    uint32_t num_leaves = 0;
+    std::string bdev_next = "";
+    while ((de = readdir(d.get())) != nullptr) {
+        if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+            continue;
+        }
+
+        // We set the first name we find here
+        if (bdev_next.empty()) {
+            bdev_next = de->d_name;
+        }
+        num_leaves++;
+    }
+
+    // if we have more than one leaves, we return immediately. We can't continue to create the
+    // file since we don't know how to write it out using fiemap, so it will be readable via the
+    // underlying block devices later. The reader will also have to construct the same device mapper
+    // target in order read the file out.
+    if (num_leaves > 1) {
+        LOG(ERROR) << "Found " << num_leaves << " leaf block devices under device mapper device "
+                   << bdev;
+        return false;
+    }
+
+    // recursively call with the block device we found in order to pop the device mapper stack.
+    return DeviceMapperStackPop(bdev_next, bdev_raw);
+}
+
+bool FiemapWriter::GetBlockDeviceForFile(const std::string& file_path, std::string* bdev_path,
+                                         bool* uses_dm) {
+    struct stat sb;
+    if (stat(file_path.c_str(), &sb)) {
+        PLOG(ERROR) << "Failed to get stat for: " << file_path;
+        return false;
+    }
+
+    std::string bdev;
+    if (!BlockDeviceToName(major(sb.st_dev), minor(sb.st_dev), &bdev)) {
+        LOG(ERROR) << "Failed to get block device name for " << major(sb.st_dev) << ":"
+                   << minor(sb.st_dev);
+        return false;
+    }
+
+    std::string bdev_raw;
+    if (!DeviceMapperStackPop(bdev, &bdev_raw)) {
+        LOG(ERROR) << "Failed to get the bottom of the device mapper stack for device: " << bdev;
+        return false;
+    }
+
+    if (uses_dm) {
+        *uses_dm = (bdev_raw != bdev);
+    }
+
+    LOG(DEBUG) << "Popped device (" << bdev_raw << ") from device mapper stack starting with ("
+               << bdev << ")";
+
+    *bdev_path = ::android::base::StringPrintf("/dev/block/%s", bdev_raw.c_str());
+
+    // Make sure we are talking to a block device before calling it a success.
+    if (stat(bdev_path->c_str(), &sb)) {
+        PLOG(ERROR) << "Failed to get stat for block device: " << *bdev_path;
+        return false;
+    }
+
+    if ((sb.st_mode & S_IFMT) != S_IFBLK) {
+        PLOG(ERROR) << "File: " << *bdev_path << " is not a block device";
+        return false;
+    }
+
+    return true;
+}
+
+static bool GetBlockDeviceSize(int bdev_fd, const std::string& bdev_path, uint64_t* bdev_size) {
+    uint64_t size_in_bytes = 0;
+    if (ioctl(bdev_fd, BLKGETSIZE64, &size_in_bytes)) {
+        PLOG(ERROR) << "Failed to get total size for: " << bdev_path;
+        return false;
+    }
+
+    *bdev_size = size_in_bytes;
+
+    return true;
+}
+
+static uint64_t GetFileSize(const std::string& file_path) {
+    struct stat sb;
+    if (stat(file_path.c_str(), &sb)) {
+        PLOG(ERROR) << "Failed to get size for file: " << file_path;
+        return 0;
+    }
+
+    return sb.st_size;
+}
+
+static bool PerformFileChecks(const std::string& file_path, uint64_t* blocksz, uint32_t* fs_type) {
+    struct statfs64 sfs;
+    if (statfs64(file_path.c_str(), &sfs)) {
+        PLOG(ERROR) << "Failed to read file system status at: " << file_path;
+        return false;
+    }
+
+    if (!sfs.f_bsize) {
+        LOG(ERROR) << "Unsupported block size: " << sfs.f_bsize;
+        return false;
+    }
+
+    // Check if the filesystem is of supported types.
+    // Only ext4, f2fs, and vfat are tested and supported.
+    switch (sfs.f_type) {
+        case EXT4_SUPER_MAGIC:
+        case F2FS_SUPER_MAGIC:
+        case MSDOS_SUPER_MAGIC:
+            break;
+        default:
+            LOG(ERROR) << "Unsupported file system type: 0x" << std::hex << sfs.f_type;
+            return false;
+    }
+
+    *blocksz = sfs.f_bsize;
+    *fs_type = sfs.f_type;
+    return true;
+}
+
+static FiemapStatus FallocateFallback(int file_fd, uint64_t block_size, uint64_t file_size,
+                                      const std::string& file_path,
+                                      const std::function<bool(uint64_t, uint64_t)>& on_progress) {
+    // Even though this is much faster than writing zeroes, it is still slow
+    // enough that we need to fire the progress callback periodically. To
+    // easily achieve this, we seek in chunks. We use 1000 chunks since
+    // normally we only fire the callback on 1/1000th increments.
+    uint64_t bytes_per_chunk = std::max(file_size / 1000, block_size);
+
+    // Seek just to the end of each chunk and write a single byte, causing
+    // the filesystem to allocate blocks.
+    off_t cursor = 0;
+    off_t end = static_cast<off_t>(file_size);
+    while (cursor < end) {
+        cursor = std::min(static_cast<off_t>(cursor + bytes_per_chunk), end);
+        auto rv = TEMP_FAILURE_RETRY(lseek(file_fd, cursor - 1, SEEK_SET));
+        if (rv < 0) {
+            PLOG(ERROR) << "Failed to lseek " << file_path;
+            return FiemapStatus::FromErrno(errno);
+        }
+        if (rv != cursor - 1) {
+            LOG(ERROR) << "Seek returned wrong offset " << rv << " for file " << file_path;
+            return FiemapStatus::Error();
+        }
+        char buffer[] = {0};
+        if (!android::base::WriteFully(file_fd, buffer, 1)) {
+            PLOG(ERROR) << "Write failed: " << file_path;
+            return FiemapStatus::FromErrno(errno);
+        }
+        if (on_progress && !on_progress(cursor, file_size)) {
+            return FiemapStatus::Error();
+        }
+    }
+    return FiemapStatus::Ok();
+}
+
+// F2FS-specific ioctl
+// It requires the below kernel commit merged in v4.16-rc1.
+//   1ad71a27124c ("f2fs: add an ioctl to disable GC for specific file")
+// In android-4.4,
+//   56ee1e817908 ("f2fs: updates on v4.16-rc1")
+// In android-4.9,
+//   2f17e34672a8 ("f2fs: updates on v4.16-rc1")
+// In android-4.14,
+//   ce767d9a55bc ("f2fs: updates on v4.16-rc1")
+#ifndef F2FS_IOC_SET_PIN_FILE
+#ifndef F2FS_IOCTL_MAGIC
+#define F2FS_IOCTL_MAGIC 0xf5
+#endif
+#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
+#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
+#endif
+
+static bool IsFilePinned(int file_fd, const std::string& file_path, uint32_t fs_type) {
+    if (fs_type != F2FS_SUPER_MAGIC) {
+        // No pinning necessary for ext4 or vfat. The blocks, once allocated,
+        // are expected to be fixed.
+        return true;
+    }
+
+    // f2fs: export FS_NOCOW_FL flag to user
+    uint32_t flags;
+    int error = ioctl(file_fd, FS_IOC_GETFLAGS, &flags);
+    if (error < 0) {
+        if ((errno == ENOTTY) || (errno == ENOTSUP)) {
+            PLOG(ERROR) << "Failed to get flags, not supported by kernel: " << file_path;
+        } else {
+            PLOG(ERROR) << "Failed to get flags: " << file_path;
+        }
+        return false;
+    }
+    if (!(flags & FS_NOCOW_FL)) {
+        return false;
+    }
+
+    // F2FS_IOC_GET_PIN_FILE returns the number of blocks moved.
+    uint32_t moved_blocks_nr;
+    error = ioctl(file_fd, F2FS_IOC_GET_PIN_FILE, &moved_blocks_nr);
+    if (error < 0) {
+        if ((errno == ENOTTY) || (errno == ENOTSUP)) {
+            PLOG(ERROR) << "Failed to get file pin status, not supported by kernel: " << file_path;
+        } else {
+            PLOG(ERROR) << "Failed to get file pin status: " << file_path;
+        }
+        return false;
+    }
+
+    if (moved_blocks_nr) {
+        LOG(WARNING) << moved_blocks_nr << " blocks moved in file " << file_path;
+    }
+    return moved_blocks_nr == 0;
+}
+
+static bool PinFile(int file_fd, const std::string& file_path, uint32_t fs_type) {
+    if (IsFilePinned(file_fd, file_path, fs_type)) {
+        return true;
+    }
+    if (fs_type != F2FS_SUPER_MAGIC) {
+        // No pinning necessary for ext4/msdos. The blocks, once allocated, are
+        // expected to be fixed.
+        return true;
+    }
+
+    uint32_t pin_status = 1;
+    int error = ioctl(file_fd, F2FS_IOC_SET_PIN_FILE, &pin_status);
+    if (error < 0) {
+        if ((errno == ENOTTY) || (errno == ENOTSUP)) {
+            PLOG(ERROR) << "Failed to pin file, not supported by kernel: " << file_path;
+        } else {
+            PLOG(ERROR) << "Failed to pin file: " << file_path;
+        }
+        return false;
+    }
+
+    return true;
+}
+
+// write zeroes in 'blocksz' byte increments until we reach file_size to make sure the data
+// blocks are actually written to by the file system and thus getting rid of the holes in the
+// file.
+static FiemapStatus WriteZeroes(int file_fd, const std::string& file_path, size_t blocksz,
+                                uint64_t file_size,
+                                const std::function<bool(uint64_t, uint64_t)>& on_progress) {
+    auto buffer = std::unique_ptr<void, decltype(&free)>(calloc(1, blocksz), free);
+    if (buffer == nullptr) {
+        LOG(ERROR) << "failed to allocate memory for writing file";
+        return FiemapStatus::Error();
+    }
+
+    off64_t offset = lseek64(file_fd, 0, SEEK_SET);
+    if (offset < 0) {
+        PLOG(ERROR) << "Failed to seek at the beginning of : " << file_path;
+        return FiemapStatus::FromErrno(errno);
+    }
+
+    int permille = -1;
+    while (offset < file_size) {
+        if (!::android::base::WriteFully(file_fd, buffer.get(), blocksz)) {
+            PLOG(ERROR) << "Failed to write" << blocksz << " bytes at offset" << offset
+                        << " in file " << file_path;
+            return FiemapStatus::FromErrno(errno);
+        }
+
+        offset += blocksz;
+
+        // Don't invoke the callback every iteration - wait until a significant
+        // chunk (here, 1/1000th) of the data has been processed.
+        int new_permille = (static_cast<uint64_t>(offset) * 1000) / file_size;
+        if (new_permille != permille && static_cast<uint64_t>(offset) != file_size) {
+            if (on_progress && !on_progress(offset, file_size)) {
+                return FiemapStatus::Error();
+            }
+            permille = new_permille;
+        }
+    }
+
+    if (lseek64(file_fd, 0, SEEK_SET) < 0) {
+        PLOG(ERROR) << "Failed to reset offset at the beginning of : " << file_path;
+        return FiemapStatus::FromErrno(errno);
+    }
+    return FiemapStatus::Ok();
+}
+
+// Reserve space for the file on the file system and write it out to make sure the extents
+// don't come back unwritten. Return from this function with the kernel file offset set to 0.
+// If the filesystem is f2fs, then we also PIN the file on disk to make sure the blocks
+// aren't moved around.
+static FiemapStatus AllocateFile(int file_fd, const std::string& file_path, uint64_t blocksz,
+                                 uint64_t file_size, unsigned int fs_type,
+                                 std::function<bool(uint64_t, uint64_t)> on_progress) {
+    bool need_explicit_writes = true;
+    switch (fs_type) {
+        case EXT4_SUPER_MAGIC:
+            break;
+        case F2FS_SUPER_MAGIC: {
+            bool supported;
+            if (!F2fsPinBeforeAllocate(file_fd, &supported)) {
+                return FiemapStatus::Error();
+            }
+            if (supported) {
+                if (!PinFile(file_fd, file_path, fs_type)) {
+                    return FiemapStatus::Error();
+                }
+                need_explicit_writes = false;
+            }
+            break;
+        }
+        case MSDOS_SUPER_MAGIC:
+            // fallocate() is not supported, and not needed, since VFAT does not support holes.
+            // Instead we can perform a much faster allocation.
+            return FallocateFallback(file_fd, blocksz, file_size, file_path, on_progress);
+        default:
+            LOG(ERROR) << "Missing fallocate() support for file system " << fs_type;
+            return FiemapStatus::Error();
+    }
+
+    if (fallocate(file_fd, 0, 0, file_size)) {
+        PLOG(ERROR) << "Failed to allocate space for file: " << file_path << " size: " << file_size;
+        return FiemapStatus::FromErrno(errno);
+    }
+
+    if (need_explicit_writes) {
+        auto status = WriteZeroes(file_fd, file_path, blocksz, file_size, on_progress);
+        if (!status.is_ok()) {
+            return status;
+        }
+    }
+
+    // flush all writes here ..
+    if (fsync(file_fd)) {
+        PLOG(ERROR) << "Failed to synchronize written file:" << file_path;
+        return FiemapStatus::FromErrno(errno);
+    }
+
+    // Send one last progress notification.
+    if (on_progress && !on_progress(file_size, file_size)) {
+        return FiemapStatus::Error();
+    }
+    return FiemapStatus::Ok();
+}
+
+bool FiemapWriter::HasPinnedExtents(const std::string& file_path) {
+    android::base::unique_fd fd(open(file_path.c_str(), O_NOFOLLOW | O_CLOEXEC | O_RDONLY));
+    if (fd < 0) {
+        PLOG(ERROR) << "open: " << file_path;
+        return false;
+    }
+
+    struct statfs64 sfs;
+    if (fstatfs64(fd, &sfs)) {
+        PLOG(ERROR) << "fstatfs64: " << file_path;
+        return false;
+    }
+    return IsFilePinned(fd, file_path, sfs.f_type);
+}
+
+static bool CountFiemapExtents(int file_fd, const std::string& file_path, uint32_t* num_extents) {
+    struct fiemap fiemap = {};
+    fiemap.fm_start = 0;
+    fiemap.fm_length = UINT64_MAX;
+    fiemap.fm_flags = FIEMAP_FLAG_SYNC;
+    fiemap.fm_extent_count = 0;
+
+    if (ioctl(file_fd, FS_IOC_FIEMAP, &fiemap)) {
+        PLOG(ERROR) << "Failed to get FIEMAP from the kernel for file: " << file_path;
+        return false;
+    }
+
+    if (num_extents) {
+        *num_extents = fiemap.fm_mapped_extents;
+    }
+    return true;
+}
+
+static bool IsValidExtent(const fiemap_extent* extent, std::string_view file_path) {
+    if (extent->fe_flags & kUnsupportedExtentFlags) {
+        LOG(ERROR) << "Extent at location " << extent->fe_logical << " of file " << file_path
+                   << " has unsupported flags";
+        return false;
+    }
+    return true;
+}
+
+static bool IsLastExtent(const fiemap_extent* extent) {
+    return !!(extent->fe_flags & FIEMAP_EXTENT_LAST);
+}
+
+static bool FiemapToExtents(struct fiemap* fiemap, std::vector<struct fiemap_extent>* extents,
+                            uint32_t num_extents, std::string_view file_path) {
+    if (num_extents == 0) return false;
+
+    const struct fiemap_extent* last_extent = &fiemap->fm_extents[num_extents - 1];
+    if (!IsLastExtent(last_extent)) {
+        LOG(ERROR) << "FIEMAP did not return a final extent for file: " << file_path;
+        return false;
+    }
+
+    // Iterate through each extent, read and make sure its valid before adding it to the vector
+    // merging contiguous extents.
+    fiemap_extent* prev = &fiemap->fm_extents[0];
+    if (!IsValidExtent(prev, file_path)) return false;
+
+    for (uint32_t i = 1; i < num_extents; i++) {
+        fiemap_extent* next = &fiemap->fm_extents[i];
+
+        // Make sure extents are returned in order
+        if (next != last_extent && IsLastExtent(next)) {
+            LOG(ERROR) << "Extents are being received out-of-order";
+            return false;
+        }
+
+        // Check if extent's flags are valid
+        if (!IsValidExtent(next, file_path)) return false;
+
+        // Check if the current extent is contiguous with the previous one.
+        // An extent can be combined with its predecessor only if:
+        //  1. There is no physical space between the previous and the current
+        //  extent, and
+        //  2. The physical distance between the previous and current extent
+        //  corresponds to their logical distance (contiguous mapping).
+        if (prev->fe_physical + prev->fe_length == next->fe_physical &&
+            next->fe_physical - prev->fe_physical == next->fe_logical - prev->fe_logical) {
+            prev->fe_length += next->fe_length;
+        } else {
+            extents->emplace_back(*prev);
+            prev = next;
+        }
+    }
+    extents->emplace_back(*prev);
+
+    return true;
+}
+
+static bool ReadFiemap(int file_fd, const std::string& file_path,
+                       std::vector<struct fiemap_extent>* extents) {
+    uint32_t num_extents;
+    if (!CountFiemapExtents(file_fd, file_path, &num_extents)) {
+        return false;
+    }
+    if (num_extents == 0) {
+        LOG(ERROR) << "File " << file_path << " has zero extents";
+        return false;
+    }
+    if (num_extents > kMaxExtents) {
+        LOG(ERROR) << "File has " << num_extents << ", maximum is " << kMaxExtents << ": "
+                   << file_path;
+        return false;
+    }
+
+    uint64_t fiemap_size = sizeof(struct fiemap) + num_extents * sizeof(struct fiemap_extent);
+    auto buffer = std::unique_ptr<void, decltype(&free)>(calloc(1, fiemap_size), free);
+    if (buffer == nullptr) {
+        LOG(ERROR) << "Failed to allocate memory for fiemap";
+        return false;
+    }
+
+    struct fiemap* fiemap = reinterpret_cast<struct fiemap*>(buffer.get());
+    fiemap->fm_start = 0;
+    fiemap->fm_length = UINT64_MAX;
+    // make sure file is synced to disk before we read the fiemap
+    fiemap->fm_flags = FIEMAP_FLAG_SYNC;
+    fiemap->fm_extent_count = num_extents;
+
+    if (ioctl(file_fd, FS_IOC_FIEMAP, fiemap)) {
+        PLOG(ERROR) << "Failed to get FIEMAP from the kernel for file: " << file_path;
+        return false;
+    }
+    if (fiemap->fm_mapped_extents != num_extents) {
+        LOG(ERROR) << "FIEMAP returned unexpected extent count (" << num_extents
+                   << " expected, got " << fiemap->fm_mapped_extents << ") for file: " << file_path;
+        return false;
+    }
+
+    return FiemapToExtents(fiemap, extents, num_extents, file_path);
+}
+
+static bool ReadFibmap(int file_fd, const std::string& file_path,
+                       std::vector<struct fiemap_extent>* extents) {
+    struct stat s;
+    if (fstat(file_fd, &s)) {
+        PLOG(ERROR) << "Failed to stat " << file_path;
+        return false;
+    }
+
+    unsigned int blksize;
+    if (ioctl(file_fd, FIGETBSZ, &blksize) < 0) {
+        PLOG(ERROR) << "Failed to get FIGETBSZ for " << file_path;
+        return false;
+    }
+    if (!blksize) {
+        LOG(ERROR) << "Invalid filesystem block size: " << blksize;
+        return false;
+    }
+
+    uint64_t num_blocks = (s.st_size + blksize - 1) / blksize;
+    if (num_blocks > std::numeric_limits<uint32_t>::max()) {
+        LOG(ERROR) << "Too many blocks for FIBMAP (" << num_blocks << ")";
+        return false;
+    }
+
+    for (uint32_t last_block, block_number = 0; block_number < num_blocks; block_number++) {
+        uint32_t block = block_number;
+        if (ioctl(file_fd, FIBMAP, &block)) {
+            PLOG(ERROR) << "Failed to get FIBMAP for file " << file_path;
+            return false;
+        }
+        if (!block) {
+            LOG(ERROR) << "Logical block " << block_number << " is a hole, which is not supported";
+            return false;
+        }
+
+        if (!extents->empty() && block == last_block + 1) {
+            extents->back().fe_length += blksize;
+        } else {
+            extents->push_back(fiemap_extent{.fe_logical = block_number,
+                                             .fe_physical = static_cast<uint64_t>(block) * blksize,
+                                             .fe_length = static_cast<uint64_t>(blksize),
+                                             .fe_flags = 0});
+            if (extents->size() > kMaxExtents) {
+                LOG(ERROR) << "File has more than " << kMaxExtents << "extents: " << file_path;
+                return false;
+            }
+        }
+        last_block = block;
+    }
+    return true;
+}
+
+FiemapUniquePtr FiemapWriter::Open(const std::string& file_path, uint64_t file_size, bool create,
+                                   std::function<bool(uint64_t, uint64_t)> progress) {
+    FiemapUniquePtr ret;
+    if (!Open(file_path, file_size, &ret, create, progress).is_ok()) {
+        return nullptr;
+    }
+    return ret;
+}
+
+FiemapStatus FiemapWriter::Open(const std::string& file_path, uint64_t file_size,
+                                FiemapUniquePtr* out, bool create,
+                                std::function<bool(uint64_t, uint64_t)> progress) {
+    out->reset();
+
+    // if 'create' is false, open an existing file and do not truncate.
+    int open_flags = O_RDWR | O_CLOEXEC;
+    if (create) {
+        if (access(file_path.c_str(), F_OK) == 0) {
+            LOG(WARNING) << "File " << file_path << " already exists, truncating";
+        }
+        open_flags |= O_CREAT | O_TRUNC;
+    }
+    ::android::base::unique_fd file_fd(
+            TEMP_FAILURE_RETRY(open(file_path.c_str(), open_flags, S_IRUSR | S_IWUSR)));
+    if (file_fd < 0) {
+        PLOG(ERROR) << "Failed to create file at: " << file_path;
+        return FiemapStatus::FromErrno(errno);
+    }
+
+    std::string abs_path;
+    if (!::android::base::Realpath(file_path, &abs_path)) {
+        int saved_errno = errno;
+        PLOG(ERROR) << "Invalid file path: " << file_path;
+        cleanup(file_path, create);
+        return FiemapStatus::FromErrno(saved_errno);
+    }
+
+    std::string bdev_path;
+    if (!GetBlockDeviceForFile(abs_path, &bdev_path)) {
+        LOG(ERROR) << "Failed to get block dev path for file: " << file_path;
+        cleanup(abs_path, create);
+        return FiemapStatus::Error();
+    }
+
+    ::android::base::unique_fd bdev_fd(
+            TEMP_FAILURE_RETRY(open(bdev_path.c_str(), O_RDONLY | O_CLOEXEC)));
+    if (bdev_fd < 0) {
+        int saved_errno = errno;
+        PLOG(ERROR) << "Failed to open block device: " << bdev_path;
+        cleanup(file_path, create);
+        return FiemapStatus::FromErrno(saved_errno);
+    }
+
+    uint64_t bdevsz;
+    if (!GetBlockDeviceSize(bdev_fd, bdev_path, &bdevsz)) {
+        int saved_errno = errno;
+        LOG(ERROR) << "Failed to get block device size for : " << bdev_path;
+        cleanup(file_path, create);
+        return FiemapStatus::FromErrno(saved_errno);
+    }
+
+    if (!create) {
+        file_size = GetFileSize(abs_path);
+        if (file_size == 0) {
+            LOG(ERROR) << "Invalid file size of zero bytes for file: " << abs_path;
+            return FiemapStatus::FromErrno(errno);
+        }
+    }
+
+    uint64_t blocksz;
+    uint32_t fs_type;
+    if (!PerformFileChecks(abs_path, &blocksz, &fs_type)) {
+        LOG(ERROR) << "Failed to validate file or file system for file:" << abs_path;
+        cleanup(abs_path, create);
+        return FiemapStatus::Error();
+    }
+
+    // Align up to the nearest block size.
+    if (file_size % blocksz) {
+        file_size += blocksz - (file_size % blocksz);
+    }
+
+    if (create) {
+        auto status =
+                AllocateFile(file_fd, abs_path, blocksz, file_size, fs_type, std::move(progress));
+        if (!status.is_ok()) {
+            LOG(ERROR) << "Failed to allocate file: " << abs_path << " of size: " << file_size
+                       << " bytes";
+            cleanup(abs_path, create);
+            return status;
+        }
+    }
+
+    // f2fs may move the file blocks around.
+    if (!PinFile(file_fd, abs_path, fs_type)) {
+        cleanup(abs_path, create);
+        LOG(ERROR) << "Failed to pin the file in storage";
+        return FiemapStatus::Error();
+    }
+
+    // now allocate the FiemapWriter and start setting it up
+    FiemapUniquePtr fmap(new FiemapWriter());
+    switch (fs_type) {
+        case EXT4_SUPER_MAGIC:
+        case F2FS_SUPER_MAGIC:
+            if (!ReadFiemap(file_fd, abs_path, &fmap->extents_)) {
+                LOG(ERROR) << "Failed to read fiemap of file: " << abs_path;
+                cleanup(abs_path, create);
+                return FiemapStatus::Error();
+            }
+            break;
+        case MSDOS_SUPER_MAGIC:
+            if (!ReadFibmap(file_fd, abs_path, &fmap->extents_)) {
+                LOG(ERROR) << "Failed to read fibmap of file: " << abs_path;
+                cleanup(abs_path, create);
+                return FiemapStatus::Error();
+            }
+            break;
+    }
+
+    fmap->file_path_ = abs_path;
+    fmap->bdev_path_ = bdev_path;
+    fmap->file_size_ = file_size;
+    fmap->bdev_size_ = bdevsz;
+    fmap->fs_type_ = fs_type;
+    fmap->block_size_ = blocksz;
+
+    LOG(VERBOSE) << "Successfully created FiemapWriter for file " << abs_path << " on block device "
+                 << bdev_path;
+    *out = std::move(fmap);
+    return FiemapStatus::Ok();
+}
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/fiemap_writer_test.cpp b/fs_mgr/libfiemap/fiemap_writer_test.cpp
new file mode 100644
index 0000000..3c8ab42
--- /dev/null
+++ b/fs_mgr/libfiemap/fiemap_writer_test.cpp
@@ -0,0 +1,547 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/vfs.h>
+#include <unistd.h>
+
+#include <string>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/unique_fd.h>
+#include <gtest/gtest.h>
+#include <libdm/loop_control.h>
+#include <libfiemap/fiemap_writer.h>
+#include <libfiemap/split_fiemap_writer.h>
+#include <libgsi/libgsi.h>
+
+#include "utility.h"
+
+namespace android {
+namespace fiemap {
+
+using namespace std;
+using namespace std::string_literals;
+using namespace android::fiemap;
+using unique_fd = android::base::unique_fd;
+using LoopDevice = android::dm::LoopDevice;
+
+std::string gTestDir;
+uint64_t testfile_size = 536870912;  // default of 512MiB
+size_t gBlockSize = 0;
+
+class FiemapWriterTest : public ::testing::Test {
+  protected:
+    void SetUp() override {
+        const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
+        testfile = gTestDir + "/"s + tinfo->name();
+    }
+
+    void TearDown() override { unlink(testfile.c_str()); }
+
+    // name of the file we use for testing
+    std::string testfile;
+};
+
+class SplitFiemapTest : public ::testing::Test {
+  protected:
+    void SetUp() override {
+        const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
+        testfile = gTestDir + "/"s + tinfo->name();
+    }
+
+    void TearDown() override {
+        std::string message;
+        if (!SplitFiemap::RemoveSplitFiles(testfile, &message)) {
+            cerr << "Could not remove all split files: " << message;
+        }
+    }
+
+    // name of the file we use for testing
+    std::string testfile;
+};
+
+TEST_F(FiemapWriterTest, CreateImpossiblyLargeFile) {
+    // Try creating a file of size ~100TB but aligned to
+    // 512 byte to make sure block alignment tests don't
+    // fail.
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, 1099511627997184);
+    EXPECT_EQ(fptr, nullptr);
+    EXPECT_EQ(access(testfile.c_str(), F_OK), -1);
+    EXPECT_EQ(errno, ENOENT);
+}
+
+TEST_F(FiemapWriterTest, CreateUnalignedFile) {
+    // Try creating a file of size 4097 bytes which is guaranteed
+    // to be unaligned to all known block sizes.
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize + 1);
+    ASSERT_NE(fptr, nullptr);
+    ASSERT_EQ(fptr->size(), gBlockSize * 2);
+}
+
+TEST_F(FiemapWriterTest, CheckFilePath) {
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize);
+    ASSERT_NE(fptr, nullptr);
+    EXPECT_EQ(fptr->size(), gBlockSize);
+    EXPECT_EQ(fptr->file_path(), testfile);
+    EXPECT_EQ(access(testfile.c_str(), F_OK), 0);
+}
+
+TEST_F(FiemapWriterTest, CheckFileSize) {
+    // Create a large-ish file and test that the expected size matches.
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, 1024 * 1024 * 16);
+    ASSERT_NE(fptr, nullptr);
+
+    struct stat s;
+    ASSERT_EQ(stat(testfile.c_str(), &s), 0);
+    EXPECT_EQ(static_cast<uint64_t>(s.st_size), fptr->size());
+}
+
+TEST_F(FiemapWriterTest, CheckProgress) {
+    std::vector<uint64_t> expected;
+    size_t invocations = 0;
+    auto callback = [&](uint64_t done, uint64_t total) -> bool {
+        if (invocations >= expected.size()) {
+            return false;
+        }
+        EXPECT_EQ(done, expected[invocations]);
+        EXPECT_EQ(total, gBlockSize);
+        invocations++;
+        return true;
+    };
+
+    expected.push_back(gBlockSize);
+
+    auto ptr = FiemapWriter::Open(testfile, gBlockSize, true, std::move(callback));
+    EXPECT_NE(ptr, nullptr);
+    EXPECT_EQ(invocations, expected.size());
+}
+
+TEST_F(FiemapWriterTest, CheckPinning) {
+    auto ptr = FiemapWriter::Open(testfile, 4096);
+    ASSERT_NE(ptr, nullptr);
+    EXPECT_TRUE(FiemapWriter::HasPinnedExtents(testfile));
+}
+
+TEST_F(FiemapWriterTest, CheckBlockDevicePath) {
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize);
+    EXPECT_EQ(fptr->size(), gBlockSize);
+    EXPECT_EQ(fptr->bdev_path().find("/dev/block/"), size_t(0));
+
+    if (!android::gsi::IsGsiRunning()) {
+        EXPECT_EQ(fptr->bdev_path().find("/dev/block/dm-"), string::npos);
+    }
+}
+
+TEST_F(FiemapWriterTest, CheckFileCreated) {
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, 32768);
+    ASSERT_NE(fptr, nullptr);
+    unique_fd fd(open(testfile.c_str(), O_RDONLY));
+    EXPECT_GT(fd, -1);
+}
+
+TEST_F(FiemapWriterTest, CheckFileSizeActual) {
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, testfile_size);
+    ASSERT_NE(fptr, nullptr);
+
+    struct stat sb;
+    ASSERT_EQ(stat(testfile.c_str(), &sb), 0);
+    EXPECT_GE(sb.st_size, testfile_size);
+}
+
+TEST_F(FiemapWriterTest, CheckFileExtents) {
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, testfile_size);
+    ASSERT_NE(fptr, nullptr);
+    EXPECT_GT(fptr->extents().size(), 0);
+}
+
+TEST_F(FiemapWriterTest, ExistingFile) {
+    // Create the file.
+    { ASSERT_NE(FiemapWriter::Open(testfile, gBlockSize), nullptr); }
+    // Test that we can still open it.
+    {
+        auto ptr = FiemapWriter::Open(testfile, 0, false);
+        ASSERT_NE(ptr, nullptr);
+        EXPECT_GT(ptr->extents().size(), 0);
+    }
+}
+
+TEST_F(FiemapWriterTest, FileDeletedOnError) {
+    auto callback = [](uint64_t, uint64_t) -> bool { return false; };
+    auto ptr = FiemapWriter::Open(testfile, gBlockSize, true, std::move(callback));
+    EXPECT_EQ(ptr, nullptr);
+    EXPECT_EQ(access(testfile.c_str(), F_OK), -1);
+    EXPECT_EQ(errno, ENOENT);
+}
+
+TEST_F(FiemapWriterTest, MaxBlockSize) {
+    uint64_t max_piece_size = 0;
+    ASSERT_TRUE(DetermineMaximumFileSize(testfile, &max_piece_size));
+    ASSERT_GT(max_piece_size, 0);
+}
+
+TEST_F(FiemapWriterTest, FibmapBlockAddressing) {
+    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize);
+    ASSERT_NE(fptr, nullptr);
+
+    switch (fptr->fs_type()) {
+        case F2FS_SUPER_MAGIC:
+        case EXT4_SUPER_MAGIC:
+            // Skip the test for FIEMAP supported filesystems. This is really
+            // because f2fs/ext4 have caches that seem to defeat reading back
+            // directly from the block device, and writing directly is too
+            // dangerous.
+            std::cout << "Skipping test, filesystem does not use FIBMAP\n";
+            return;
+    }
+
+    bool uses_dm;
+    std::string bdev_path;
+    ASSERT_TRUE(FiemapWriter::GetBlockDeviceForFile(testfile, &bdev_path, &uses_dm));
+
+    if (uses_dm) {
+        // We could use a device-mapper wrapper here to bypass encryption, but
+        // really this test is for FIBMAP correctness on VFAT (where encryption
+        // is never used), so we don't bother.
+        std::cout << "Skipping test, block device is metadata encrypted\n";
+        return;
+    }
+
+    std::string data(fptr->size(), '\0');
+    for (size_t i = 0; i < data.size(); i++) {
+        data[i] = 'A' + static_cast<char>(data.size() % 26);
+    }
+
+    {
+        unique_fd fd(open(testfile.c_str(), O_WRONLY | O_CLOEXEC));
+        ASSERT_GE(fd, 0);
+        ASSERT_TRUE(android::base::WriteFully(fd, data.data(), data.size()));
+        ASSERT_EQ(fsync(fd), 0);
+    }
+
+    ASSERT_FALSE(fptr->extents().empty());
+    const auto& first_extent = fptr->extents()[0];
+
+    unique_fd bdev(open(fptr->bdev_path().c_str(), O_RDONLY | O_CLOEXEC));
+    ASSERT_GE(bdev, 0);
+
+    off_t where = first_extent.fe_physical;
+    ASSERT_EQ(lseek(bdev, where, SEEK_SET), where);
+
+    // Note: this will fail on encrypted folders.
+    std::string actual(data.size(), '\0');
+    ASSERT_GE(first_extent.fe_length, data.size());
+    ASSERT_TRUE(android::base::ReadFully(bdev, actual.data(), actual.size()));
+    EXPECT_EQ(memcmp(actual.data(), data.data(), data.size()), 0);
+}
+
+TEST_F(SplitFiemapTest, Create) {
+    auto ptr = SplitFiemap::Create(testfile, 1024 * 768, 1024 * 32);
+    ASSERT_NE(ptr, nullptr);
+
+    auto extents = ptr->extents();
+
+    // Destroy the fiemap, closing file handles. This should not delete them.
+    ptr = nullptr;
+
+    std::vector<std::string> files;
+    ASSERT_TRUE(SplitFiemap::GetSplitFileList(testfile, &files));
+    for (const auto& path : files) {
+        EXPECT_EQ(access(path.c_str(), F_OK), 0);
+    }
+
+    ASSERT_GE(extents.size(), files.size());
+}
+
+TEST_F(SplitFiemapTest, Open) {
+    {
+        auto ptr = SplitFiemap::Create(testfile, 1024 * 768, 1024 * 32);
+        ASSERT_NE(ptr, nullptr);
+    }
+
+    auto ptr = SplitFiemap::Open(testfile);
+    ASSERT_NE(ptr, nullptr);
+
+    auto extents = ptr->extents();
+    ASSERT_GE(extents.size(), 24);
+}
+
+TEST_F(SplitFiemapTest, DeleteOnFail) {
+    auto ptr = SplitFiemap::Create(testfile, 1024 * 1024 * 100, 1);
+    ASSERT_EQ(ptr, nullptr);
+
+    std::string first_file = testfile + ".0001";
+    ASSERT_NE(access(first_file.c_str(), F_OK), 0);
+    ASSERT_EQ(errno, ENOENT);
+    ASSERT_NE(access(testfile.c_str(), F_OK), 0);
+    ASSERT_EQ(errno, ENOENT);
+}
+
+static string ReadSplitFiles(const std::string& base_path, size_t num_files) {
+    std::string result;
+    for (int i = 0; i < num_files; i++) {
+        std::string path = base_path + android::base::StringPrintf(".%04d", i);
+        std::string data;
+        if (!android::base::ReadFileToString(path, &data)) {
+            return {};
+        }
+        result += data;
+    }
+    return result;
+}
+
+TEST_F(SplitFiemapTest, WriteWholeFile) {
+    static constexpr size_t kChunkSize = 32768;
+    static constexpr size_t kSize = kChunkSize * 3;
+    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
+    ASSERT_NE(ptr, nullptr);
+
+    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
+    for (size_t i = 0; i < kSize / sizeof(int); i++) {
+        buffer[i] = i;
+    }
+    ASSERT_TRUE(ptr->Write(buffer.get(), kSize));
+
+    std::string expected(reinterpret_cast<char*>(buffer.get()), kSize);
+    auto actual = ReadSplitFiles(testfile, 3);
+    ASSERT_EQ(expected.size(), actual.size());
+    EXPECT_EQ(memcmp(expected.data(), actual.data(), actual.size()), 0);
+}
+
+TEST_F(SplitFiemapTest, WriteFileInChunks1) {
+    static constexpr size_t kChunkSize = 32768;
+    static constexpr size_t kSize = kChunkSize * 3;
+    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
+    ASSERT_NE(ptr, nullptr);
+
+    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
+    for (size_t i = 0; i < kSize / sizeof(int); i++) {
+        buffer[i] = i;
+    }
+
+    // Write in chunks of 1000 (so some writes straddle the boundary of two
+    // files).
+    size_t bytes_written = 0;
+    while (bytes_written < kSize) {
+        size_t to_write = std::min(kSize - bytes_written, (size_t)1000);
+        char* data = reinterpret_cast<char*>(buffer.get()) + bytes_written;
+        ASSERT_TRUE(ptr->Write(data, to_write));
+        bytes_written += to_write;
+    }
+
+    std::string expected(reinterpret_cast<char*>(buffer.get()), kSize);
+    auto actual = ReadSplitFiles(testfile, 3);
+    ASSERT_EQ(expected.size(), actual.size());
+    EXPECT_EQ(memcmp(expected.data(), actual.data(), actual.size()), 0);
+}
+
+TEST_F(SplitFiemapTest, WriteFileInChunks2) {
+    static constexpr size_t kChunkSize = 32768;
+    static constexpr size_t kSize = kChunkSize * 3;
+    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
+    ASSERT_NE(ptr, nullptr);
+
+    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
+    for (size_t i = 0; i < kSize / sizeof(int); i++) {
+        buffer[i] = i;
+    }
+
+    // Write in chunks of 32KiB so every write is exactly at the end of the
+    // current file.
+    size_t bytes_written = 0;
+    while (bytes_written < kSize) {
+        size_t to_write = std::min(kSize - bytes_written, kChunkSize);
+        char* data = reinterpret_cast<char*>(buffer.get()) + bytes_written;
+        ASSERT_TRUE(ptr->Write(data, to_write));
+        bytes_written += to_write;
+    }
+
+    std::string expected(reinterpret_cast<char*>(buffer.get()), kSize);
+    auto actual = ReadSplitFiles(testfile, 3);
+    ASSERT_EQ(expected.size(), actual.size());
+    EXPECT_EQ(memcmp(expected.data(), actual.data(), actual.size()), 0);
+}
+
+TEST_F(SplitFiemapTest, WritePastEnd) {
+    static constexpr size_t kChunkSize = 32768;
+    static constexpr size_t kSize = kChunkSize * 3;
+    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
+    ASSERT_NE(ptr, nullptr);
+
+    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
+    for (size_t i = 0; i < kSize / sizeof(int); i++) {
+        buffer[i] = i;
+    }
+    ASSERT_TRUE(ptr->Write(buffer.get(), kSize));
+    ASSERT_FALSE(ptr->Write(buffer.get(), kSize));
+}
+
+class VerifyBlockWritesExt4 : public ::testing::Test {
+    // 2GB Filesystem and 4k block size by default
+    static constexpr uint64_t block_size = 4096;
+    static constexpr uint64_t fs_size = 2147483648;
+
+  protected:
+    void SetUp() override {
+        fs_path = std::string(getenv("TMPDIR")) + "/ext4_2G.img";
+        uint64_t count = fs_size / block_size;
+        std::string dd_cmd =
+                ::android::base::StringPrintf("/system/bin/dd if=/dev/zero of=%s bs=%" PRIu64
+                                              " count=%" PRIu64 " > /dev/null 2>&1",
+                                              fs_path.c_str(), block_size, count);
+        std::string mkfs_cmd =
+                ::android::base::StringPrintf("/system/bin/mkfs.ext4 -q %s", fs_path.c_str());
+        // create mount point
+        mntpoint = std::string(getenv("TMPDIR")) + "/fiemap_mnt";
+        ASSERT_EQ(mkdir(mntpoint.c_str(), S_IRWXU), 0);
+        // create file for the file system
+        int ret = system(dd_cmd.c_str());
+        ASSERT_EQ(ret, 0);
+        // Get and attach a loop device to the filesystem we created
+        LoopDevice loop_dev(fs_path, 10s);
+        ASSERT_TRUE(loop_dev.valid());
+        // create file system
+        ret = system(mkfs_cmd.c_str());
+        ASSERT_EQ(ret, 0);
+
+        // mount the file system
+        ASSERT_EQ(mount(loop_dev.device().c_str(), mntpoint.c_str(), "ext4", 0, nullptr), 0);
+    }
+
+    void TearDown() override {
+        umount(mntpoint.c_str());
+        rmdir(mntpoint.c_str());
+        unlink(fs_path.c_str());
+    }
+
+    std::string mntpoint;
+    std::string fs_path;
+};
+
+class VerifyBlockWritesF2fs : public ::testing::Test {
+    // 2GB Filesystem and 4k block size by default
+    static constexpr uint64_t block_size = 4096;
+    static constexpr uint64_t fs_size = 2147483648;
+
+  protected:
+    void SetUp() override {
+        fs_path = std::string(getenv("TMPDIR")) + "/f2fs_2G.img";
+        uint64_t count = fs_size / block_size;
+        std::string dd_cmd =
+                ::android::base::StringPrintf("/system/bin/dd if=/dev/zero of=%s bs=%" PRIu64
+                                              " count=%" PRIu64 " > /dev/null 2>&1",
+                                              fs_path.c_str(), block_size, count);
+        std::string mkfs_cmd =
+                ::android::base::StringPrintf("/system/bin/make_f2fs -q %s", fs_path.c_str());
+        // create mount point
+        mntpoint = std::string(getenv("TMPDIR")) + "/fiemap_mnt";
+        ASSERT_EQ(mkdir(mntpoint.c_str(), S_IRWXU), 0);
+        // create file for the file system
+        int ret = system(dd_cmd.c_str());
+        ASSERT_EQ(ret, 0);
+        // Get and attach a loop device to the filesystem we created
+        LoopDevice loop_dev(fs_path, 10s);
+        ASSERT_TRUE(loop_dev.valid());
+        // create file system
+        ret = system(mkfs_cmd.c_str());
+        ASSERT_EQ(ret, 0);
+
+        // mount the file system
+        ASSERT_EQ(mount(loop_dev.device().c_str(), mntpoint.c_str(), "f2fs", 0, nullptr), 0);
+    }
+
+    void TearDown() override {
+        umount(mntpoint.c_str());
+        rmdir(mntpoint.c_str());
+        unlink(fs_path.c_str());
+    }
+
+    std::string mntpoint;
+    std::string fs_path;
+};
+
+bool DetermineBlockSize() {
+    struct statfs s;
+    if (statfs(gTestDir.c_str(), &s)) {
+        std::cerr << "Could not call statfs: " << strerror(errno) << "\n";
+        return false;
+    }
+    if (!s.f_bsize) {
+        std::cerr << "Invalid block size: " << s.f_bsize << "\n";
+        return false;
+    }
+
+    gBlockSize = s.f_bsize;
+    return true;
+}
+
+}  // namespace fiemap
+}  // namespace android
+
+using namespace android::fiemap;
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    if (argc > 1 && argv[1] == "-h"s) {
+        cerr << "Usage: [test_dir] [file_size]\n";
+        cerr << "\n";
+        cerr << "Note: test_dir must be a writable, unencrypted directory.\n";
+        exit(EXIT_FAILURE);
+    }
+    ::android::base::InitLogging(argv, ::android::base::StderrLogger);
+
+    std::string root_dir = "/data/local/unencrypted";
+    if (access(root_dir.c_str(), F_OK)) {
+        root_dir = "/data";
+    }
+
+    std::string tempdir = root_dir + "/XXXXXX"s;
+    if (!mkdtemp(tempdir.data())) {
+        cerr << "unable to create tempdir on " << root_dir << "\n";
+        exit(EXIT_FAILURE);
+    }
+    if (!android::base::Realpath(tempdir, &gTestDir)) {
+        cerr << "unable to find realpath for " << tempdir;
+        exit(EXIT_FAILURE);
+    }
+
+    if (argc > 2) {
+        testfile_size = strtoull(argv[2], NULL, 0);
+        if (testfile_size == ULLONG_MAX) {
+            testfile_size = 512 * 1024 * 1024;
+        }
+    }
+
+    if (!DetermineBlockSize()) {
+        exit(EXIT_FAILURE);
+    }
+
+    auto result = RUN_ALL_TESTS();
+
+    std::string cmd = "rm -rf " + gTestDir;
+    system(cmd.c_str());
+
+    return result;
+}
diff --git a/fs_mgr/libfiemap/image_manager.cpp b/fs_mgr/libfiemap/image_manager.cpp
new file mode 100644
index 0000000..3ee742f
--- /dev/null
+++ b/fs_mgr/libfiemap/image_manager.cpp
@@ -0,0 +1,754 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <libfiemap/image_manager.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <ext4_utils/ext4_utils.h>
+#include <fs_mgr/file_wait.h>
+#include <fs_mgr_dm_linear.h>
+#include <libdm/loop_control.h>
+#include <libfiemap/split_fiemap_writer.h>
+#include <libgsi/libgsi.h>
+
+#include "metadata.h"
+#include "utility.h"
+
+namespace android {
+namespace fiemap {
+
+using namespace std::literals;
+using android::base::ReadFileToString;
+using android::base::unique_fd;
+using android::dm::DeviceMapper;
+using android::dm::DmDeviceState;
+using android::dm::DmTable;
+using android::dm::DmTargetLinear;
+using android::dm::LoopControl;
+using android::fs_mgr::CreateLogicalPartition;
+using android::fs_mgr::CreateLogicalPartitionParams;
+using android::fs_mgr::CreateLogicalPartitions;
+using android::fs_mgr::DestroyLogicalPartition;
+using android::fs_mgr::GetBlockDevicePartitionName;
+using android::fs_mgr::GetBlockDevicePartitionNames;
+using android::fs_mgr::GetPartitionName;
+
+static constexpr char kTestImageMetadataDir[] = "/metadata/gsi/test";
+static constexpr char kOtaTestImageMetadataDir[] = "/metadata/gsi/ota/test";
+
+std::unique_ptr<ImageManager> ImageManager::Open(const std::string& dir_prefix) {
+    auto metadata_dir = "/metadata/gsi/" + dir_prefix;
+    auto data_dir = "/data/gsi/" + dir_prefix;
+    auto install_dir_file = gsi::DsuInstallDirFile(gsi::GetDsuSlot(dir_prefix));
+    std::string path;
+    if (ReadFileToString(install_dir_file, &path)) {
+        data_dir = path;
+    }
+    return Open(metadata_dir, data_dir);
+}
+
+std::unique_ptr<ImageManager> ImageManager::Open(const std::string& metadata_dir,
+                                                 const std::string& data_dir) {
+    return std::unique_ptr<ImageManager>(new ImageManager(metadata_dir, data_dir));
+}
+
+ImageManager::ImageManager(const std::string& metadata_dir, const std::string& data_dir)
+    : metadata_dir_(metadata_dir), data_dir_(data_dir) {
+    partition_opener_ = std::make_unique<android::fs_mgr::PartitionOpener>();
+}
+
+std::string ImageManager::GetImageHeaderPath(const std::string& name) {
+    return JoinPaths(data_dir_, name) + ".img";
+}
+
+// The status file has one entry per line, with each entry formatted as one of:
+//   dm:<name>
+//   loop:<path>
+//
+// This simplifies the process of tearing down a mapping, since we can simply
+// unmap each entry in the order it appears.
+std::string ImageManager::GetStatusFilePath(const std::string& image_name) {
+    return JoinPaths(metadata_dir_, image_name) + ".status";
+}
+
+static std::string GetStatusPropertyName(const std::string& image_name) {
+    // Note: we don't prefix |image_name|, because CreateLogicalPartition won't
+    // prefix the name either. There are no plans to change this at the moment,
+    // consumers of the image API must take care to use globally-unique image
+    // names.
+    return "gsid.mapped_image." + image_name;
+}
+
+void ImageManager::set_partition_opener(std::unique_ptr<IPartitionOpener>&& opener) {
+    partition_opener_ = std::move(opener);
+}
+
+bool ImageManager::IsImageMapped(const std::string& image_name) {
+    auto prop_name = GetStatusPropertyName(image_name);
+    if (android::base::GetProperty(prop_name, "").empty()) {
+        // If mapped in first-stage init, the dm-device will exist but not the
+        // property.
+        auto& dm = DeviceMapper::Instance();
+        return dm.GetState(image_name) != DmDeviceState::INVALID;
+    }
+    return true;
+}
+
+std::vector<std::string> ImageManager::GetAllBackingImages() {
+    std::vector<std::string> images;
+    if (!MetadataExists(metadata_dir_)) {
+        return images;
+    }
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (metadata) {
+        for (auto&& partition : metadata->partitions) {
+            images.push_back(partition.name);
+        }
+    }
+    return images;
+}
+
+bool ImageManager::BackingImageExists(const std::string& name) {
+    if (!MetadataExists(metadata_dir_)) {
+        return false;
+    }
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return false;
+    }
+    return !!FindPartition(*metadata.get(), name);
+}
+
+static bool IsTestDir(const std::string& path) {
+    return android::base::StartsWith(path, kTestImageMetadataDir) ||
+           android::base::StartsWith(path, kOtaTestImageMetadataDir);
+}
+
+static bool IsUnreliablePinningAllowed(const std::string& path) {
+    return android::base::StartsWith(path, "/data/gsi/dsu/") || IsTestDir(path);
+}
+
+FiemapStatus ImageManager::CreateBackingImage(
+        const std::string& name, uint64_t size, int flags,
+        std::function<bool(uint64_t, uint64_t)>&& on_progress) {
+    auto data_path = GetImageHeaderPath(name);
+    std::unique_ptr<SplitFiemap> fw;
+    auto status = SplitFiemap::Create(data_path, size, 0, &fw, on_progress);
+    if (!status.is_ok()) {
+        return status;
+    }
+
+    bool reliable_pinning;
+    if (!FilesystemHasReliablePinning(data_path, &reliable_pinning)) {
+        return FiemapStatus::Error();
+    }
+    if (!reliable_pinning && !IsUnreliablePinningAllowed(data_path)) {
+        // For historical reasons, we allow unreliable pinning for certain use
+        // cases (DSUs, testing) because the ultimate use case is either
+        // developer-oriented or ephemeral (the intent is to boot immediately
+        // into DSUs). For everything else - such as snapshots/OTAs or adb
+        // remount, we have a higher bar, and require the filesystem to support
+        // proper pinning.
+        LOG(ERROR) << "File system does not have reliable block pinning";
+        SplitFiemap::RemoveSplitFiles(data_path);
+        return FiemapStatus::Error();
+    }
+
+    // Except for testing, we do not allow persisting metadata that references
+    // device-mapper devices. It just doesn't make sense, because the device
+    // numbering may change on reboot. We allow it for testing since the images
+    // are not meant to survive reboot. Outside of tests, this can only happen
+    // if device-mapper is stacked in some complex way not supported by
+    // FiemapWriter.
+    auto device_path = GetDevicePathForFile(fw.get());
+    if (android::base::StartsWith(device_path, "/dev/block/dm-") && !IsTestDir(metadata_dir_)) {
+        LOG(ERROR) << "Cannot persist images against device-mapper device: " << device_path;
+
+        fw = {};
+        SplitFiemap::RemoveSplitFiles(data_path);
+        return FiemapStatus::Error();
+    }
+
+    bool readonly = !!(flags & CREATE_IMAGE_READONLY);
+    if (!UpdateMetadata(metadata_dir_, name, fw.get(), size, readonly)) {
+        return FiemapStatus::Error();
+    }
+
+    if (flags & CREATE_IMAGE_ZERO_FILL) {
+        auto res = ZeroFillNewImage(name, 0);
+        if (!res.is_ok()) {
+            DeleteBackingImage(name);
+            return res;
+        }
+    }
+    return FiemapStatus::Ok();
+}
+
+FiemapStatus ImageManager::ZeroFillNewImage(const std::string& name, uint64_t bytes) {
+    auto data_path = GetImageHeaderPath(name);
+
+    // See the comment in MapImageDevice() about how this works.
+    std::string block_device;
+    bool can_use_devicemapper;
+    if (!FiemapWriter::GetBlockDeviceForFile(data_path, &block_device, &can_use_devicemapper)) {
+        LOG(ERROR) << "Could not determine block device for " << data_path;
+        return FiemapStatus::Error();
+    }
+
+    if (!can_use_devicemapper) {
+        // We've backed with loop devices, and since we store files in an
+        // unencrypted folder, the initial zeroes we wrote will suffice.
+        return FiemapStatus::Ok();
+    }
+
+    // data is dm-crypt, or FBE + dm-default-key. This means the zeroes written
+    // by libfiemap were encrypted, so we need to map the image in and correct
+    // this.
+    auto device = MappedDevice::Open(this, 10s, name);
+    if (!device) {
+        return FiemapStatus::Error();
+    }
+
+    static constexpr size_t kChunkSize = 4096;
+    std::string zeroes(kChunkSize, '\0');
+
+    uint64_t remaining;
+    if (bytes) {
+        remaining = bytes;
+    } else {
+        remaining = get_block_device_size(device->fd());
+        if (!remaining) {
+            PLOG(ERROR) << "Could not get block device size for " << device->path();
+            return FiemapStatus::FromErrno(errno);
+        }
+    }
+    while (remaining) {
+        uint64_t to_write = std::min(static_cast<uint64_t>(zeroes.size()), remaining);
+        if (!android::base::WriteFully(device->fd(), zeroes.data(),
+                                       static_cast<size_t>(to_write))) {
+            PLOG(ERROR) << "write failed: " << device->path();
+            return FiemapStatus::FromErrno(errno);
+        }
+        remaining -= to_write;
+    }
+    return FiemapStatus::Ok();
+}
+
+bool ImageManager::DeleteBackingImage(const std::string& name) {
+    // For dm-linear devices sitting on top of /data, we cannot risk deleting
+    // the file. The underlying blocks could be reallocated by the filesystem.
+    if (IsImageMapped(name)) {
+        LOG(ERROR) << "Cannot delete backing image " << name << " because mapped to a block device";
+        return false;
+    }
+
+#if defined __ANDROID_RECOVERY__
+    LOG(ERROR) << "Cannot remove images backed by /data in recovery";
+    return false;
+#else
+    std::string message;
+    auto header_file = GetImageHeaderPath(name);
+    if (!SplitFiemap::RemoveSplitFiles(header_file, &message)) {
+        // This is fatal, because we don't want to leave these files dangling.
+        LOG(ERROR) << "Error removing image " << name << ": " << message;
+        return false;
+    }
+
+    auto status_file = GetStatusFilePath(name);
+    if (!android::base::RemoveFileIfExists(status_file)) {
+        LOG(ERROR) << "Error removing " << status_file << ": " << message;
+    }
+    return RemoveImageMetadata(metadata_dir_, name);
+#endif
+}
+
+// Create a block device for an image file, using its extents in its
+// lp_metadata.
+bool ImageManager::MapWithDmLinear(const IPartitionOpener& opener, const std::string& name,
+                                   const std::chrono::milliseconds& timeout_ms, std::string* path) {
+    // :TODO: refresh extents in metadata file until f2fs is fixed.
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return false;
+    }
+
+    auto super = android::fs_mgr::GetMetadataSuperBlockDevice(*metadata.get());
+    auto block_device = android::fs_mgr::GetBlockDevicePartitionName(*super);
+
+    CreateLogicalPartitionParams params = {
+            .block_device = block_device,
+            .metadata = metadata.get(),
+            .partition_name = name,
+            .force_writable = true,
+            .timeout_ms = timeout_ms,
+            .partition_opener = &opener,
+    };
+    if (!CreateLogicalPartition(params, path)) {
+        LOG(ERROR) << "Error creating device-mapper node for image " << name;
+        return false;
+    }
+
+    auto status_string = "dm:" + name;
+    auto status_file = GetStatusFilePath(name);
+    if (!android::base::WriteStringToFile(status_string, status_file)) {
+        PLOG(ERROR) << "Could not write status file: " << status_file;
+        DestroyLogicalPartition(name);
+        return false;
+    }
+    return true;
+}
+
+// Helper to create a loop device for a file.
+static bool CreateLoopDevice(LoopControl& control, const std::string& file,
+                             const std::chrono::milliseconds& timeout_ms, std::string* path) {
+    static constexpr int kOpenFlags = O_RDWR | O_NOFOLLOW | O_CLOEXEC;
+    android::base::unique_fd file_fd(open(file.c_str(), kOpenFlags));
+    if (file_fd < 0) {
+        PLOG(ERROR) << "Could not open file: " << file;
+        return false;
+    }
+    if (!control.Attach(file_fd, timeout_ms, path)) {
+        LOG(ERROR) << "Could not create loop device for: " << file;
+        return false;
+    }
+    LOG(INFO) << "Created loop device " << *path << " for file " << file;
+    return true;
+}
+
+class AutoDetachLoopDevices final {
+  public:
+    AutoDetachLoopDevices(LoopControl& control, const std::vector<std::string>& devices)
+        : control_(control), devices_(devices), commit_(false) {}
+
+    ~AutoDetachLoopDevices() {
+        if (commit_) return;
+        for (const auto& device : devices_) {
+            control_.Detach(device);
+        }
+    }
+
+    void Commit() { commit_ = true; }
+
+  private:
+    LoopControl& control_;
+    const std::vector<std::string>& devices_;
+    bool commit_;
+};
+
+// If an image is stored across multiple files, this takes a list of loop
+// devices and joins them together using device-mapper.
+bool ImageManager::MapWithLoopDeviceList(const std::vector<std::string>& device_list,
+                                         const std::string& name,
+                                         const std::chrono::milliseconds& timeout_ms,
+                                         std::string* path) {
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return false;
+    }
+    auto partition = FindPartition(*metadata.get(), name);
+    if (!partition) {
+        LOG(ERROR) << "Could not find image in metadata: " << name;
+        return false;
+    }
+
+    // Since extent lengths are in sector units, the size should be a multiple
+    // of the sector size.
+    uint64_t partition_size = GetPartitionSize(*metadata.get(), *partition);
+    if (partition_size % LP_SECTOR_SIZE != 0) {
+        LOG(ERROR) << "Partition size not sector aligned: " << name << ", " << partition_size
+                   << " bytes";
+        return false;
+    }
+
+    DmTable table;
+
+    uint64_t start_sector = 0;
+    uint64_t sectors_needed = partition_size / LP_SECTOR_SIZE;
+    for (const auto& block_device : device_list) {
+        // The final block device must be == partition_size, otherwise we
+        // can't find the AVB footer on verified partitions.
+        static constexpr int kOpenFlags = O_RDWR | O_NOFOLLOW | O_CLOEXEC;
+        unique_fd fd(open(block_device.c_str(), kOpenFlags));
+        if (fd < 0) {
+            PLOG(ERROR) << "Open failed: " << block_device;
+            return false;
+        }
+
+        uint64_t file_size = get_block_device_size(fd);
+        uint64_t file_sectors = file_size / LP_SECTOR_SIZE;
+        uint64_t segment_size = std::min(file_sectors, sectors_needed);
+
+        table.Emplace<DmTargetLinear>(start_sector, segment_size, block_device, 0);
+
+        start_sector += segment_size;
+        sectors_needed -= segment_size;
+        if (sectors_needed == 0) {
+            break;
+        }
+    }
+
+    auto& dm = DeviceMapper::Instance();
+    if (!dm.CreateDevice(name, table, path, timeout_ms)) {
+        LOG(ERROR) << "Could not create device-mapper device over loop set";
+        return false;
+    }
+
+    // Build the status file.
+    std::vector<std::string> lines;
+    lines.emplace_back("dm:" + name);
+    for (const auto& block_device : device_list) {
+        lines.emplace_back("loop:" + block_device);
+    }
+    auto status_message = android::base::Join(lines, "\n");
+    auto status_file = GetStatusFilePath(name);
+    if (!android::base::WriteStringToFile(status_message, status_file)) {
+        PLOG(ERROR) << "Write failed: " << status_file;
+        dm.DeleteDevice(name);
+        return false;
+    }
+    return true;
+}
+
+static bool OptimizeLoopDevices(const std::vector<std::string>& device_list) {
+    for (const auto& device : device_list) {
+        unique_fd fd(open(device.c_str(), O_RDWR | O_CLOEXEC | O_NOFOLLOW));
+        if (fd < 0) {
+            PLOG(ERROR) << "Open failed: " << device;
+            return false;
+        }
+        if (!LoopControl::EnableDirectIo(fd)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+// Helper to use one or more loop devices around image files.
+bool ImageManager::MapWithLoopDevice(const std::string& name,
+                                     const std::chrono::milliseconds& timeout_ms,
+                                     std::string* path) {
+    auto image_header = GetImageHeaderPath(name);
+
+    std::vector<std::string> file_list;
+    if (!SplitFiemap::GetSplitFileList(image_header, &file_list)) {
+        LOG(ERROR) << "Could not get image file list";
+        return false;
+    }
+
+    // Map each image file as a loopback device.
+    LoopControl control;
+    std::vector<std::string> loop_devices;
+    AutoDetachLoopDevices auto_detach(control, loop_devices);
+
+    auto start_time = std::chrono::steady_clock::now();
+    for (const auto& file : file_list) {
+        auto now = std::chrono::steady_clock::now();
+        auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
+
+        std::string loop_device;
+        if (!CreateLoopDevice(control, file, timeout_ms - elapsed, &loop_device)) {
+            break;
+        }
+        loop_devices.emplace_back(loop_device);
+    }
+    if (loop_devices.size() != file_list.size()) {
+        // The number of devices will mismatch if CreateLoopDevice() failed.
+        return false;
+    }
+
+    // If OptimizeLoopDevices fails, we'd use double the memory.
+    if (!OptimizeLoopDevices(loop_devices)) {
+        return false;
+    }
+
+    // If there's only one loop device (by far the most common case, splits
+    // will normally only happen on sdcards with FAT32), then just return that
+    // as the block device. Otherwise, we need to use dm-linear to stitch
+    // together all the loop devices we just created.
+    if (loop_devices.size() > 1) {
+        if (!MapWithLoopDeviceList(loop_devices, name, timeout_ms, path)) {
+            return false;
+        }
+    }
+
+    auto status_message = "loop:" + loop_devices.back();
+    auto status_file = GetStatusFilePath(name);
+    if (!android::base::WriteStringToFile(status_message, status_file)) {
+        PLOG(ERROR) << "Write failed: " << status_file;
+        return false;
+    }
+
+    auto_detach.Commit();
+
+    *path = loop_devices.back();
+    return true;
+}
+
+bool ImageManager::MapImageDevice(const std::string& name,
+                                  const std::chrono::milliseconds& timeout_ms, std::string* path) {
+    if (IsImageMapped(name)) {
+        LOG(ERROR) << "Backing image " << name << " is already mapped";
+        return false;
+    }
+
+    auto image_header = GetImageHeaderPath(name);
+
+#if !defined __ANDROID_RECOVERY__
+    // If there is a device-mapper node wrapping the block device, then we're
+    // able to create another node around it; the dm layer does not carry the
+    // exclusion lock down the stack when a mount occurs.
+    //
+    // If there is no intermediate device-mapper node, then partitions cannot be
+    // opened writable due to sepolicy and exclusivity of having a mounted
+    // filesystem. This should only happen on devices with no encryption, or
+    // devices with FBE and no metadata encryption. For these cases it suffices
+    // to perform normal file writes to /data/gsi (which is unencrypted).
+    std::string block_device;
+    bool can_use_devicemapper;
+    if (!FiemapWriter::GetBlockDeviceForFile(image_header, &block_device, &can_use_devicemapper)) {
+        LOG(ERROR) << "Could not determine block device for " << image_header;
+        return false;
+    }
+
+    if (can_use_devicemapper) {
+        if (!MapWithDmLinear(*partition_opener_.get(), name, timeout_ms, path)) {
+            return false;
+        }
+    } else if (!MapWithLoopDevice(name, timeout_ms, path)) {
+        return false;
+    }
+#else
+    // In recovery, we can *only* use device-mapper, since partitions aren't
+    // mounted. That also means we cannot call GetBlockDeviceForFile.
+    if (!MapWithDmLinear(*partition_opener_.get(), name, timeout_ms, path)) {
+        return false;
+    }
+#endif
+
+    // Set a property so we remember this is mapped.
+    auto prop_name = GetStatusPropertyName(name);
+    if (!android::base::SetProperty(prop_name, *path)) {
+        UnmapImageDevice(name, true);
+        return false;
+    }
+    return true;
+}
+
+bool ImageManager::MapImageWithDeviceMapper(const IPartitionOpener& opener, const std::string& name,
+                                            std::string* dev) {
+    std::string ignore_path;
+    if (!MapWithDmLinear(opener, name, {}, &ignore_path)) {
+        return false;
+    }
+
+    auto& dm = DeviceMapper::Instance();
+    if (!dm.GetDeviceString(name, dev)) {
+        return false;
+    }
+    return true;
+}
+
+bool ImageManager::UnmapImageDevice(const std::string& name) {
+    return UnmapImageDevice(name, false);
+}
+
+bool ImageManager::UnmapImageDevice(const std::string& name, bool force) {
+    if (!force && !IsImageMapped(name)) {
+        LOG(ERROR) << "Backing image " << name << " is not mapped";
+        return false;
+    }
+    auto& dm = DeviceMapper::Instance();
+    LoopControl loop;
+
+    std::string status;
+    auto status_file = GetStatusFilePath(name);
+    if (!android::base::ReadFileToString(status_file, &status)) {
+        PLOG(ERROR) << "Read failed: " << status_file;
+        return false;
+    }
+
+    auto lines = android::base::Split(status, "\n");
+    for (const auto& line : lines) {
+        auto pieces = android::base::Split(line, ":");
+        if (pieces.size() != 2) {
+            LOG(ERROR) << "Unknown status line";
+            continue;
+        }
+        if (pieces[0] == "dm") {
+            // Failure to remove a dm node is fatal, since we can't safely
+            // remove the file or loop devices.
+            const auto& name = pieces[1];
+            if (!dm.DeleteDeviceIfExists(name)) {
+                return false;
+            }
+        } else if (pieces[0] == "loop") {
+            // Failure to remove a loop device is not fatal, since we can still
+            // remove the backing file if we want.
+            loop.Detach(pieces[1]);
+        } else {
+            LOG(ERROR) << "Unknown status: " << pieces[0];
+        }
+    }
+
+    std::string message;
+    if (!android::base::RemoveFileIfExists(status_file, &message)) {
+        LOG(ERROR) << "Could not remove " << status_file << ": " << message;
+    }
+
+    auto status_prop = GetStatusPropertyName(name);
+    android::base::SetProperty(status_prop, "");
+    return true;
+}
+
+bool ImageManager::RemoveAllImages() {
+    if (!MetadataExists(metadata_dir_)) {
+        return true;
+    }
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return RemoveAllMetadata(metadata_dir_);
+    }
+
+    bool ok = true;
+    for (const auto& partition : metadata->partitions) {
+        auto partition_name = GetPartitionName(partition);
+        ok &= DeleteBackingImage(partition_name);
+    }
+    return ok && RemoveAllMetadata(metadata_dir_);
+}
+
+bool ImageManager::Validate() {
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return false;
+    }
+
+    for (const auto& partition : metadata->partitions) {
+        auto name = GetPartitionName(partition);
+        auto image_path = GetImageHeaderPath(name);
+        auto fiemap = SplitFiemap::Open(image_path);
+        if (!fiemap || !fiemap->HasPinnedExtents()) {
+            LOG(ERROR) << "Image is missing or was moved: " << image_path;
+            return false;
+        }
+    }
+    return true;
+}
+
+bool ImageManager::DisableImage(const std::string& name) {
+    return AddAttributes(metadata_dir_, name, LP_PARTITION_ATTR_DISABLED);
+}
+
+bool ImageManager::RemoveDisabledImages() {
+    if (!MetadataExists(metadata_dir_)) {
+        return true;
+    }
+
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return false;
+    }
+
+    bool ok = true;
+    for (const auto& partition : metadata->partitions) {
+        if (partition.attributes & LP_PARTITION_ATTR_DISABLED) {
+            ok &= DeleteBackingImage(GetPartitionName(partition));
+        }
+    }
+    return ok;
+}
+
+bool ImageManager::GetMappedImageDevice(const std::string& name, std::string* device) {
+    auto prop_name = GetStatusPropertyName(name);
+    *device = android::base::GetProperty(prop_name, "");
+    if (!device->empty()) {
+        return true;
+    }
+
+    auto& dm = DeviceMapper::Instance();
+    if (dm.GetState(name) == DmDeviceState::INVALID) {
+        return false;
+    }
+    return dm.GetDmDevicePathByName(name, device);
+}
+
+bool ImageManager::MapAllImages(const std::function<bool(std::set<std::string>)>& init) {
+    if (!MetadataExists(metadata_dir_)) {
+        return true;
+    }
+
+    auto metadata = OpenMetadata(metadata_dir_);
+    if (!metadata) {
+        return false;
+    }
+
+    std::set<std::string> devices;
+    for (const auto& name : GetBlockDevicePartitionNames(*metadata.get())) {
+        devices.emplace(name);
+    }
+    if (!init(std::move(devices))) {
+        return false;
+    }
+
+    auto data_device = GetMetadataSuperBlockDevice(*metadata.get());
+    auto data_partition_name = GetBlockDevicePartitionName(*data_device);
+    return CreateLogicalPartitions(*metadata.get(), data_partition_name);
+}
+
+std::unique_ptr<MappedDevice> MappedDevice::Open(IImageManager* manager,
+                                                 const std::chrono::milliseconds& timeout_ms,
+                                                 const std::string& name) {
+    std::string path;
+    if (!manager->MapImageDevice(name, timeout_ms, &path)) {
+        return nullptr;
+    }
+
+    auto device = std::unique_ptr<MappedDevice>(new MappedDevice(manager, name, path));
+    if (device->fd() < 0) {
+        return nullptr;
+    }
+    return device;
+}
+
+MappedDevice::MappedDevice(IImageManager* manager, const std::string& name, const std::string& path)
+    : manager_(manager), name_(name), path_(path) {
+    // The device is already mapped; try and open it.
+    fd_.reset(open(path.c_str(), O_RDWR | O_CLOEXEC));
+}
+
+MappedDevice::~MappedDevice() {
+    fd_ = {};
+    manager_->UnmapImageDevice(name_);
+}
+
+bool IImageManager::UnmapImageIfExists(const std::string& name) {
+    // No lock is needed even though this seems to be vulnerable to TOCTOU. If process A
+    // calls MapImageDevice() while process B calls UnmapImageIfExists(), and MapImageDevice()
+    // happens after process B checks IsImageMapped(), it would be as if MapImageDevice() is called
+    // after process B finishes calling UnmapImageIfExists(), resulting the image to be mapped,
+    // which is a reasonable sequence.
+    if (!IsImageMapped(name)) {
+        return true;
+    }
+    return UnmapImageDevice(name);
+}
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/image_test.cpp b/fs_mgr/libfiemap/image_test.cpp
new file mode 100644
index 0000000..6663391
--- /dev/null
+++ b/fs_mgr/libfiemap/image_test.cpp
@@ -0,0 +1,157 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <chrono>
+#include <iostream>
+#include <thread>
+
+#include <android-base/file.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <ext4_utils/ext4_utils.h>
+#include <fs_mgr/file_wait.h>
+#include <gtest/gtest.h>
+#include <libdm/dm.h>
+#include <libfiemap/image_manager.h>
+
+using namespace android::dm;
+using namespace std::literals;
+using android::base::unique_fd;
+using android::fiemap::ImageManager;
+using android::fs_mgr::BlockDeviceInfo;
+using android::fs_mgr::PartitionOpener;
+using android::fs_mgr::WaitForFile;
+
+static std::string gDataPath;
+static std::string gDataMountPath;
+static constexpr char kMetadataPath[] = "/metadata/gsi/test";
+
+static constexpr uint64_t kTestImageSize = 1024 * 1024;
+
+class TestPartitionOpener final : public PartitionOpener {
+  public:
+    android::base::unique_fd Open(const std::string& partition_name, int flags) const override {
+        return PartitionOpener::Open(GetPathForBlockDeviceName(partition_name), flags);
+    }
+    bool GetInfo(const std::string& partition_name, BlockDeviceInfo* info) const override {
+        return PartitionOpener::GetInfo(GetPathForBlockDeviceName(partition_name), info);
+    }
+    std::string GetDeviceString(const std::string& partition_name) const override {
+        return PartitionOpener::GetDeviceString(GetPathForBlockDeviceName(partition_name));
+    }
+
+  private:
+    static std::string GetPathForBlockDeviceName(const std::string& name) {
+        if (android::base::StartsWith(name, "loop") || android::base::StartsWith(name, "dm-")) {
+            return "/dev/block/"s + name;
+        }
+        return name;
+    }
+};
+
+// This fixture is for tests against the device's native configuration.
+class NativeTest : public ::testing::Test {
+  protected:
+    void SetUp() override {
+        manager_ = ImageManager::Open(kMetadataPath, gDataPath);
+        ASSERT_NE(manager_, nullptr);
+
+        manager_->set_partition_opener(std::make_unique<TestPartitionOpener>());
+
+        const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
+        base_name_ = tinfo->name();
+    }
+
+    void TearDown() override {
+        manager_->UnmapImageDevice(base_name_);
+        manager_->DeleteBackingImage(base_name_);
+    }
+
+    std::string PropertyName() { return "gsid.mapped_image." + base_name_; }
+
+    std::unique_ptr<ImageManager> manager_;
+    std::string base_name_;
+};
+
+TEST_F(NativeTest, CreateAndMap) {
+    ASSERT_TRUE(manager_->CreateBackingImage(base_name_, kTestImageSize, false, nullptr));
+
+    std::string path;
+    ASSERT_TRUE(manager_->MapImageDevice(base_name_, 5s, &path));
+    ASSERT_TRUE(manager_->IsImageMapped(base_name_));
+    ASSERT_EQ(android::base::GetProperty(PropertyName(), ""), path);
+
+    {
+        unique_fd fd(open(path.c_str(), O_RDWR | O_NOFOLLOW | O_CLOEXEC));
+        ASSERT_GE(fd, 0);
+        ASSERT_EQ(get_block_device_size(fd), kTestImageSize);
+    }
+
+    ASSERT_TRUE(manager_->UnmapImageDevice(base_name_));
+    ASSERT_FALSE(manager_->IsImageMapped(base_name_));
+    ASSERT_EQ(android::base::GetProperty(PropertyName(), ""), "");
+}
+
+TEST_F(NativeTest, DisableImage) {
+    ASSERT_TRUE(manager_->CreateBackingImage(base_name_, kTestImageSize, false, nullptr));
+    ASSERT_TRUE(manager_->BackingImageExists(base_name_));
+    ASSERT_TRUE(manager_->DisableImage(base_name_));
+    ASSERT_TRUE(manager_->RemoveDisabledImages());
+    ASSERT_TRUE(!manager_->BackingImageExists(base_name_));
+}
+
+TEST_F(NativeTest, GetMappedImageDevice) {
+    ASSERT_TRUE(manager_->CreateBackingImage(base_name_, kTestImageSize, false, nullptr));
+
+    std::string path1, path2;
+    ASSERT_TRUE(manager_->MapImageDevice(base_name_, 5s, &path1));
+    ASSERT_TRUE(manager_->GetMappedImageDevice(base_name_, &path2));
+    EXPECT_EQ(path1, path2);
+
+    ASSERT_TRUE(manager_->UnmapImageDevice(base_name_));
+}
+
+bool Mkdir(const std::string& path) {
+    if (mkdir(path.c_str(), 0700) && errno != EEXIST) {
+        std::cerr << "Could not mkdir " << path << ": " << strerror(errno) << std::endl;
+        return false;
+    }
+    return true;
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+
+    if (argc >= 2) {
+        gDataPath = argv[1];
+    } else {
+        gDataPath = "/data/gsi/test";
+    }
+    gDataMountPath = gDataPath + "/mnt"s;
+
+    if (!Mkdir(gDataPath) || !Mkdir(kMetadataPath) || !Mkdir(gDataMountPath) ||
+        !Mkdir(kMetadataPath + "/mnt"s)) {
+        return 1;
+    }
+    return RUN_ALL_TESTS();
+}
diff --git a/fs_mgr/libfiemap/include/libfiemap/fiemap_status.h b/fs_mgr/libfiemap/include/libfiemap/fiemap_status.h
new file mode 100644
index 0000000..d7b2cf1
--- /dev/null
+++ b/fs_mgr/libfiemap/include/libfiemap/fiemap_status.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <errno.h>
+#include <stdint.h>
+
+#include <string>
+
+namespace android::fiemap {
+
+// Represent error status of libfiemap classes.
+class FiemapStatus {
+  public:
+    enum class ErrorCode : int32_t {
+        SUCCESS = 0,
+        // Generic non-recoverable failure.
+        ERROR = INT32_MIN,
+        // Not enough space
+        NO_SPACE = -ENOSPC,
+    };
+
+    // Create from a given errno (specified in errno,h)
+    static FiemapStatus FromErrno(int error_num) { return FiemapStatus(CastErrorCode(-error_num)); }
+
+    // Create from an integer error code that is expected to be an ErrorCode
+    // value. If it isn't, Error() is returned.
+    static FiemapStatus FromErrorCode(int32_t error_code) {
+        return FiemapStatus(CastErrorCode(error_code));
+    }
+
+    // Generic error.
+    static FiemapStatus Error() { return FiemapStatus(ErrorCode::ERROR); }
+
+    // Success.
+    static FiemapStatus Ok() { return FiemapStatus(ErrorCode::SUCCESS); }
+
+    ErrorCode error_code() const { return error_code_; }
+    bool is_ok() const { return error_code() == ErrorCode::SUCCESS; }
+    operator bool() const { return is_ok(); }
+
+    // For logging and debugging only.
+    std::string string() const;
+
+  protected:
+    FiemapStatus(ErrorCode code) : error_code_(code) {}
+
+  private:
+    ErrorCode error_code_;
+
+    static ErrorCode CastErrorCode(int error);
+};
+
+}  // namespace android::fiemap
diff --git a/fs_mgr/libfiemap/include/libfiemap/fiemap_writer.h b/fs_mgr/libfiemap/include/libfiemap/fiemap_writer.h
new file mode 100644
index 0000000..dd345f6
--- /dev/null
+++ b/fs_mgr/libfiemap/include/libfiemap/fiemap_writer.h
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <linux/fiemap.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <functional>
+#include <string>
+#include <vector>
+
+#include <android-base/unique_fd.h>
+
+#include <libfiemap/fiemap_status.h>
+
+namespace android {
+namespace fiemap {
+
+class FiemapWriter;
+using FiemapUniquePtr = std::unique_ptr<FiemapWriter>;
+
+class FiemapWriter final {
+  public:
+    // Factory method for FiemapWriter.
+    // The method returns FiemapUniquePtr that contains all the data necessary to be able to write
+    // to the given file directly using raw block i/o. The optional progress callback will be
+    // invoked, if create is true, while the file is being initialized. It receives the bytes
+    // written and the number of total bytes. If the callback returns false, the operation will
+    // fail.
+    //
+    // Note: when create is true, the file size will be aligned up to the nearest file system
+    // block.
+    static FiemapUniquePtr Open(const std::string& file_path, uint64_t file_size,
+                                bool create = true,
+                                std::function<bool(uint64_t, uint64_t)> progress = {});
+    static FiemapStatus Open(const std::string& file_path, uint64_t file_size, FiemapUniquePtr* out,
+                             bool create = true,
+                             std::function<bool(uint64_t, uint64_t)> progress = {});
+
+    // Check that a file still has the same extents since it was last opened with FiemapWriter,
+    // assuming the file was not resized outside of FiemapWriter. Returns false either on error
+    // or if the file was not pinned.
+    //
+    // This will always return true on Ext4. On F2FS, it will return true if either of the
+    // following cases are true:
+    //   - The file was never pinned.
+    //   - The file is pinned and has not been moved by the GC.
+    // Thus, this method should only be called for pinned files (such as those returned by
+    // FiemapWriter::Open).
+    static bool HasPinnedExtents(const std::string& file_path);
+
+    // Returns the underlying block device of a file. This will look past device-mapper layers
+    // as long as each layer would not change block mappings (i.e., dm-crypt, dm-bow, and dm-
+    // default-key tables are okay; dm-linear is not). If a mapping such as dm-linear is found,
+    // it will be returned in place of any physical block device.
+    //
+    // It is the caller's responsibility to check whether the returned block device is acceptable.
+    // Gsid, for example, will only accept /dev/block/by-name/userdata as the bottom device.
+    // Callers can check the device name (dm- or loop prefix), inspect sysfs, or compare the major
+    // number against a boot device.
+    //
+    // If device-mapper nodes were encountered, then |uses_dm| will be set to true.
+    static bool GetBlockDeviceForFile(const std::string& file_path, std::string* bdev_path,
+                                      bool* uses_dm = nullptr);
+
+    ~FiemapWriter() = default;
+
+    const std::string& file_path() const { return file_path_; };
+    uint64_t size() const { return file_size_; };
+    const std::string& bdev_path() const { return bdev_path_; };
+    uint64_t block_size() const { return block_size_; };
+    const std::vector<struct fiemap_extent>& extents() { return extents_; };
+    uint32_t fs_type() const { return fs_type_; }
+
+    // Non-copyable & Non-movable
+    FiemapWriter(const FiemapWriter&) = delete;
+    FiemapWriter& operator=(const FiemapWriter&) = delete;
+    FiemapWriter& operator=(FiemapWriter&&) = delete;
+    FiemapWriter(FiemapWriter&&) = delete;
+
+  private:
+    // Name of the file managed by this class.
+    std::string file_path_;
+    // Block device on which we have created the file.
+    std::string bdev_path_;
+
+    // Size in bytes of the file this class is writing
+    uint64_t file_size_;
+
+    // total size in bytes of the block device
+    uint64_t bdev_size_;
+
+    // Filesystem type where the file is being created.
+    // See: <uapi/linux/magic.h> for filesystem magic numbers
+    uint32_t fs_type_;
+
+    // block size as reported by the kernel of the underlying block device;
+    uint64_t block_size_;
+
+    // This file's fiemap
+    std::vector<struct fiemap_extent> extents_;
+
+    FiemapWriter() = default;
+};
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/include/libfiemap/image_manager.h b/fs_mgr/libfiemap/include/libfiemap/image_manager.h
new file mode 100644
index 0000000..60b98dc
--- /dev/null
+++ b/fs_mgr/libfiemap/include/libfiemap/image_manager.h
@@ -0,0 +1,212 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <stdint.h>
+
+#include <chrono>
+#include <functional>
+#include <memory>
+#include <set>
+#include <string>
+
+#include <android-base/unique_fd.h>
+#include <libfiemap/fiemap_status.h>
+#include <liblp/partition_opener.h>
+
+namespace android {
+namespace fiemap {
+
+class IImageManager {
+  public:
+    using IPartitionOpener = android::fs_mgr::IPartitionOpener;
+
+    virtual ~IImageManager() {}
+
+    // When linking to libfiemap_binder, the Open() call will use binder.
+    // Otherwise, the Open() call will use the ImageManager implementation
+    // below.
+    static std::unique_ptr<IImageManager> Open(const std::string& dir_prefix,
+                                               const std::chrono::milliseconds& timeout_ms);
+
+    // Flags for CreateBackingImage().
+    static constexpr int CREATE_IMAGE_DEFAULT = 0x0;
+    static constexpr int CREATE_IMAGE_READONLY = 0x1;
+    static constexpr int CREATE_IMAGE_ZERO_FILL = 0x2;
+
+    // Create an image that can be mapped as a block-device. If |force_zero_fill|
+    // is true, the image will be zero-filled. Otherwise, the initial content
+    // of the image is undefined. If zero-fill is requested, and the operation
+    // cannot be completed, the image will be deleted and this function will
+    // return false.
+    virtual FiemapStatus CreateBackingImage(
+            const std::string& name, uint64_t size, int flags,
+            std::function<bool(uint64_t, uint64_t)>&& on_progress = nullptr) = 0;
+
+    // Delete an image created with CreateBackingImage. Its entry will be
+    // removed from the associated lp_metadata file.
+    virtual bool DeleteBackingImage(const std::string& name) = 0;
+
+    // Create a block device for an image previously created with
+    // CreateBackingImage. This will wait for at most |timeout_ms| milliseconds
+    // for |path| to be available, and will return false if not available in
+    // the requested time. If |timeout_ms| is zero, this is NOT guaranteed to
+    // return true. A timeout of 10s is recommended.
+    //
+    // Note that snapshots created with a readonly flag are always mapped
+    // writable. The flag is persisted in the lp_metadata file however, so if
+    // fs_mgr::CreateLogicalPartition(s) is used, the flag will be respected.
+    virtual bool MapImageDevice(const std::string& name,
+                                const std::chrono::milliseconds& timeout_ms, std::string* path) = 0;
+
+    // Unmap a block device previously mapped with mapBackingImage.
+    virtual bool UnmapImageDevice(const std::string& name) = 0;
+
+    // Returns true whether the named backing image exists. This does not check
+    // consistency with the /data partition, so that it can return true in
+    // recovery.
+    virtual bool BackingImageExists(const std::string& name) = 0;
+
+    // Returns true if the specified image is mapped to a device.
+    virtual bool IsImageMapped(const std::string& name) = 0;
+
+    // Map an image using device-mapper. This is not available over binder, and
+    // is intended only for first-stage init. The returned device is a major:minor
+    // device string.
+    virtual bool MapImageWithDeviceMapper(const IPartitionOpener& opener, const std::string& name,
+                                          std::string* dev) = 0;
+
+    // If an image was mapped, return the path to its device. Otherwise, return
+    // false. Errors are not reported in this case, calling IsImageMapped is
+    // not necessary.
+    virtual bool GetMappedImageDevice(const std::string& name, std::string* device) = 0;
+
+    // Map all images owned by this manager. This is only intended to be used
+    // during first-stage init, and as such, it does not provide a timeout
+    // (meaning libdm races can't be resolved, as ueventd is not available),
+    // and is not available over binder.
+    //
+    // The callback provided is given the list of dependent block devices.
+    virtual bool MapAllImages(const std::function<bool(std::set<std::string>)>& init) = 0;
+
+    // Mark an image as disabled. This is useful for marking an image as
+    // will-be-deleted in recovery, since recovery cannot mount /data.
+    //
+    // This is not available in binder, since it is intended for recovery.
+    // When binder is available, images can simply be removed.
+    virtual bool DisableImage(const std::string& name) = 0;
+
+    // Remove all images that been marked as disabled.
+    virtual bool RemoveDisabledImages() = 0;
+
+    // Get all backing image names.
+    virtual std::vector<std::string> GetAllBackingImages() = 0;
+
+    // Writes |bytes| zeros to |name| file. If |bytes| is 0, then the
+    // whole file if filled with zeros.
+    virtual FiemapStatus ZeroFillNewImage(const std::string& name, uint64_t bytes) = 0;
+
+    // Find and remove all images and metadata for this manager.
+    virtual bool RemoveAllImages() = 0;
+
+    virtual bool UnmapImageIfExists(const std::string& name);
+};
+
+class ImageManager final : public IImageManager {
+  public:
+    // Return an ImageManager for the given metadata and data directories. Both
+    // directories must already exist.
+    static std::unique_ptr<ImageManager> Open(const std::string& metadata_dir,
+                                              const std::string& data_dir);
+
+    // Helper function that derives the metadata and data dirs given a single
+    // prefix.
+    static std::unique_ptr<ImageManager> Open(const std::string& dir_prefix);
+
+    // Methods that must be implemented from IImageManager.
+    FiemapStatus CreateBackingImage(const std::string& name, uint64_t size, int flags,
+                                    std::function<bool(uint64_t, uint64_t)>&& on_progress) override;
+    bool DeleteBackingImage(const std::string& name) override;
+    bool MapImageDevice(const std::string& name, const std::chrono::milliseconds& timeout_ms,
+                        std::string* path) override;
+    bool UnmapImageDevice(const std::string& name) override;
+    bool BackingImageExists(const std::string& name) override;
+    bool IsImageMapped(const std::string& name) override;
+    bool MapImageWithDeviceMapper(const IPartitionOpener& opener, const std::string& name,
+                                  std::string* dev) override;
+    bool RemoveAllImages() override;
+    bool DisableImage(const std::string& name) override;
+    bool RemoveDisabledImages() override;
+    bool GetMappedImageDevice(const std::string& name, std::string* device) override;
+    bool MapAllImages(const std::function<bool(std::set<std::string>)>& init) override;
+
+    std::vector<std::string> GetAllBackingImages();
+
+    // Validates that all images still have pinned extents. This will be removed
+    // once b/134588268 is fixed.
+    bool Validate();
+
+    void set_partition_opener(std::unique_ptr<IPartitionOpener>&& opener);
+
+    // Writes |bytes| zeros at the beginning of the passed image
+    FiemapStatus ZeroFillNewImage(const std::string& name, uint64_t bytes);
+
+  private:
+    ImageManager(const std::string& metadata_dir, const std::string& data_dir);
+    std::string GetImageHeaderPath(const std::string& name);
+    std::string GetStatusFilePath(const std::string& image_name);
+    bool MapWithLoopDevice(const std::string& name, const std::chrono::milliseconds& timeout_ms,
+                           std::string* path);
+    bool MapWithLoopDeviceList(const std::vector<std::string>& device_list, const std::string& name,
+                               const std::chrono::milliseconds& timeout_ms, std::string* path);
+    bool MapWithDmLinear(const IPartitionOpener& opener, const std::string& name,
+                         const std::chrono::milliseconds& timeout_ms, std::string* path);
+    bool UnmapImageDevice(const std::string& name, bool force);
+
+    ImageManager(const ImageManager&) = delete;
+    ImageManager& operator=(const ImageManager&) = delete;
+    ImageManager& operator=(ImageManager&&) = delete;
+    ImageManager(ImageManager&&) = delete;
+
+    std::string metadata_dir_;
+    std::string data_dir_;
+    std::unique_ptr<IPartitionOpener> partition_opener_;
+};
+
+// RAII helper class for mapping and opening devices with an ImageManager.
+class MappedDevice final {
+  public:
+    static std::unique_ptr<MappedDevice> Open(IImageManager* manager,
+                                              const std::chrono::milliseconds& timeout_ms,
+                                              const std::string& name);
+
+    ~MappedDevice();
+
+    int fd() const { return fd_; }
+    const std::string& path() const { return path_; }
+
+  protected:
+    MappedDevice(IImageManager* manager, const std::string& name, const std::string& path);
+
+    IImageManager* manager_;
+    std::string name_;
+    std::string path_;
+    android::base::unique_fd fd_;
+};
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/include/libfiemap/split_fiemap_writer.h b/fs_mgr/libfiemap/include/libfiemap/split_fiemap_writer.h
new file mode 100644
index 0000000..d739fcf
--- /dev/null
+++ b/fs_mgr/libfiemap/include/libfiemap/split_fiemap_writer.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <android-base/unique_fd.h>
+
+#include <libfiemap/fiemap_status.h>
+#include <libfiemap/fiemap_writer.h>
+
+namespace android {
+namespace fiemap {
+
+// Wrapper around FiemapWriter that is able to split images across files if
+// necessary.
+class SplitFiemap final {
+  public:
+    using ProgressCallback = std::function<bool(uint64_t, uint64_t)>;
+
+    // Create a new split fiemap file. If |max_piece_size| is 0, the number of
+    // pieces will be determined automatically by detecting the filesystem.
+    // Otherwise, the file will be split evenly (with the remainder in the
+    // final file).
+    static std::unique_ptr<SplitFiemap> Create(const std::string& file_path, uint64_t file_size,
+                                               uint64_t max_piece_size,
+                                               ProgressCallback progress = {});
+    static FiemapStatus Create(const std::string& file_path, uint64_t file_size,
+                               uint64_t max_piece_size, std::unique_ptr<SplitFiemap>* out_val,
+                               ProgressCallback progress = {});
+
+    // Open an existing split fiemap file.
+    static std::unique_ptr<SplitFiemap> Open(const std::string& file_path);
+
+    ~SplitFiemap();
+
+    // Return a list of all files created for a split file.
+    static bool GetSplitFileList(const std::string& file_path, std::vector<std::string>* list);
+
+    // Destroy all components of a split file. If the root file does not exist,
+    // this returns true and does not report an error.
+    static bool RemoveSplitFiles(const std::string& file_path, std::string* message = nullptr);
+
+    // Return whether all components of a split file still have pinned extents.
+    bool HasPinnedExtents() const;
+
+    // Helper method for writing data that spans files. Note there is no seek
+    // method (yet); this starts at 0 and increments the position by |bytes|.
+    bool Write(const void* data, uint64_t bytes);
+
+    // Flush all writes to all split files.
+    bool Flush();
+
+    const std::vector<struct fiemap_extent>& extents();
+    uint32_t block_size() const;
+    uint64_t size() const { return total_size_; }
+    const std::string& bdev_path() const;
+
+    // Non-copyable & Non-movable
+    SplitFiemap(const SplitFiemap&) = delete;
+    SplitFiemap& operator=(const SplitFiemap&) = delete;
+    SplitFiemap& operator=(SplitFiemap&&) = delete;
+    SplitFiemap(SplitFiemap&&) = delete;
+
+  private:
+    SplitFiemap() = default;
+    void AddFile(FiemapUniquePtr&& file);
+
+    bool creating_ = false;
+    std::string list_file_;
+    std::vector<FiemapUniquePtr> files_;
+    std::vector<struct fiemap_extent> extents_;
+    uint64_t total_size_ = 0;
+
+    // Most recently open file and position for Write().
+    size_t cursor_index_ = 0;
+    uint64_t cursor_file_pos_ = 0;
+    android::base::unique_fd cursor_fd_;
+};
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/metadata.cpp b/fs_mgr/libfiemap/metadata.cpp
new file mode 100644
index 0000000..b0dfb5c
--- /dev/null
+++ b/fs_mgr/libfiemap/metadata.cpp
@@ -0,0 +1,225 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "metadata.h"
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <liblp/builder.h>
+
+#include "utility.h"
+
+namespace android {
+namespace fiemap {
+
+using namespace android::fs_mgr;
+
+static constexpr uint32_t kMaxMetadataSize = 256 * 1024;
+
+std::string GetMetadataFile(const std::string& metadata_dir) {
+    return JoinPaths(metadata_dir, "lp_metadata");
+}
+
+bool MetadataExists(const std::string& metadata_dir) {
+    auto metadata_file = GetMetadataFile(metadata_dir);
+    if (access(metadata_file.c_str(), F_OK)) {
+        if (errno != ENOENT) {
+            PLOG(ERROR) << "Access " << metadata_file << " failed:";
+        }
+        return false;
+    }
+    return true;
+}
+
+std::unique_ptr<LpMetadata> OpenMetadata(const std::string& metadata_dir) {
+    auto metadata_file = GetMetadataFile(metadata_dir);
+    auto metadata = ReadFromImageFile(metadata_file);
+    if (!metadata) {
+        LOG(ERROR) << "Could not read metadata file " << metadata_file;
+        return nullptr;
+    }
+    return metadata;
+}
+
+// :TODO: overwrite on create if open fails
+std::unique_ptr<MetadataBuilder> OpenOrCreateMetadata(const std::string& metadata_dir,
+                                                      SplitFiemap* file) {
+    auto metadata_file = GetMetadataFile(metadata_dir);
+
+    PartitionOpener opener;
+    std::unique_ptr<MetadataBuilder> builder;
+    if (access(metadata_file.c_str(), R_OK)) {
+        if (errno != ENOENT) {
+            PLOG(ERROR) << "Access " << metadata_file << " failed:";
+            return nullptr;
+        }
+
+        auto data_device = GetDevicePathForFile(file);
+
+        BlockDeviceInfo device_info;
+        if (!opener.GetInfo(data_device, &device_info)) {
+            LOG(ERROR) << "Could not read partition: " << data_device;
+            return nullptr;
+        }
+
+        std::vector<BlockDeviceInfo> block_devices = {device_info};
+        auto super_name = android::base::Basename(data_device);
+        builder = MetadataBuilder::New(block_devices, super_name, kMaxMetadataSize, 1);
+    } else {
+        auto metadata = OpenMetadata(metadata_dir);
+        if (!metadata) {
+            return nullptr;
+        }
+        builder = MetadataBuilder::New(*metadata.get(), &opener);
+    }
+
+    if (!builder) {
+        LOG(ERROR) << "Could not create metadata builder";
+        return nullptr;
+    }
+    return builder;
+}
+
+bool SaveMetadata(MetadataBuilder* builder, const std::string& metadata_dir) {
+    auto exported = builder->Export();
+    if (!exported) {
+        LOG(ERROR) << "Unable to export new metadata";
+        return false;
+    }
+
+    // If there are no more partitions in the metadata, just delete the file.
+    auto metadata_file = GetMetadataFile(metadata_dir);
+    if (exported->partitions.empty() && android::base::RemoveFileIfExists(metadata_file)) {
+        return true;
+    }
+    if (!WriteToImageFile(metadata_file, *exported.get())) {
+        LOG(ERROR) << "Unable to save new metadata";
+        return false;
+    }
+    return true;
+}
+
+bool RemoveAllMetadata(const std::string& dir) {
+    auto metadata_file = GetMetadataFile(dir);
+    std::string err;
+    if (!android::base::RemoveFileIfExists(metadata_file, &err)) {
+        LOG(ERROR) << "Could not remove metadata file: " << err;
+        return false;
+    }
+    return true;
+}
+
+bool FillPartitionExtents(MetadataBuilder* builder, Partition* partition, SplitFiemap* file,
+                          uint64_t partition_size) {
+    auto block_device = android::base::Basename(GetDevicePathForFile(file));
+
+    uint64_t sectors_needed = partition_size / LP_SECTOR_SIZE;
+    for (const auto& extent : file->extents()) {
+        if (extent.fe_length % LP_SECTOR_SIZE != 0) {
+            LOG(ERROR) << "Extent is not sector-aligned: " << extent.fe_length;
+            return false;
+        }
+        if (extent.fe_physical % LP_SECTOR_SIZE != 0) {
+            LOG(ERROR) << "Extent physical sector is not sector-aligned: " << extent.fe_physical;
+            return false;
+        }
+
+        uint64_t num_sectors =
+                std::min(static_cast<uint64_t>(extent.fe_length / LP_SECTOR_SIZE), sectors_needed);
+        if (!num_sectors || !sectors_needed) {
+            // This should never happen, but we include it just in case. It would
+            // indicate that the last filesystem block had multiple extents.
+            LOG(WARNING) << "FiemapWriter allocated extra blocks";
+            break;
+        }
+
+        uint64_t physical_sector = extent.fe_physical / LP_SECTOR_SIZE;
+        if (!builder->AddLinearExtent(partition, block_device, num_sectors, physical_sector)) {
+            LOG(ERROR) << "Could not add extent to lp metadata";
+            return false;
+        }
+
+        sectors_needed -= num_sectors;
+    }
+    return true;
+}
+
+bool RemoveImageMetadata(const std::string& metadata_dir, const std::string& partition_name) {
+    if (!MetadataExists(metadata_dir)) {
+        return true;
+    }
+    auto metadata = OpenMetadata(metadata_dir);
+    if (!metadata) {
+        return false;
+    }
+
+    PartitionOpener opener;
+    auto builder = MetadataBuilder::New(*metadata.get(), &opener);
+    if (!builder) {
+        return false;
+    }
+    builder->RemovePartition(partition_name);
+    return SaveMetadata(builder.get(), metadata_dir);
+}
+
+bool UpdateMetadata(const std::string& metadata_dir, const std::string& partition_name,
+                    SplitFiemap* file, uint64_t partition_size, bool readonly) {
+    auto builder = OpenOrCreateMetadata(metadata_dir, file);
+    if (!builder) {
+        return false;
+    }
+    auto partition = builder->FindPartition(partition_name);
+    if (!partition) {
+        int attrs = 0;
+        if (readonly) attrs |= LP_PARTITION_ATTR_READONLY;
+
+        if ((partition = builder->AddPartition(partition_name, attrs)) == nullptr) {
+            LOG(ERROR) << "Could not add partition " << partition_name << " to metadata";
+            return false;
+        }
+    }
+    partition->RemoveExtents();
+
+    if (!FillPartitionExtents(builder.get(), partition, file, partition_size)) {
+        return false;
+    }
+    return SaveMetadata(builder.get(), metadata_dir);
+}
+
+bool AddAttributes(const std::string& metadata_dir, const std::string& partition_name,
+                   uint32_t attributes) {
+    auto metadata = OpenMetadata(metadata_dir);
+    if (!metadata) {
+        return false;
+    }
+    auto builder = MetadataBuilder::New(*metadata.get());
+    if (!builder) {
+        return false;
+    }
+    auto partition = builder->FindPartition(partition_name);
+    if (!partition) {
+        return false;
+    }
+    partition->set_attributes(partition->attributes() | attributes);
+    return SaveMetadata(builder.get(), metadata_dir);
+}
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/metadata.h b/fs_mgr/libfiemap/metadata.h
new file mode 100644
index 0000000..4eb3ad5
--- /dev/null
+++ b/fs_mgr/libfiemap/metadata.h
@@ -0,0 +1,38 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <stdint.h>
+
+#include <memory>
+#include <string>
+
+#include <libfiemap/split_fiemap_writer.h>
+#include <liblp/liblp.h>
+
+namespace android {
+namespace fiemap {
+
+bool MetadataExists(const std::string& metadata_dir);
+std::unique_ptr<android::fs_mgr::LpMetadata> OpenMetadata(const std::string& metadata_dir);
+bool UpdateMetadata(const std::string& metadata_dir, const std::string& partition_name,
+                    SplitFiemap* file, uint64_t partition_size, bool readonly);
+bool AddAttributes(const std::string& metadata_dir, const std::string& partition_name,
+                   uint32_t attributes);
+bool RemoveImageMetadata(const std::string& metadata_dir, const std::string& partition_name);
+bool RemoveAllMetadata(const std::string& dir);
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/passthrough.cpp b/fs_mgr/libfiemap/passthrough.cpp
new file mode 100644
index 0000000..1ccd9a0
--- /dev/null
+++ b/fs_mgr/libfiemap/passthrough.cpp
@@ -0,0 +1,29 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <libfiemap/image_manager.h>
+
+namespace android {
+namespace fiemap {
+
+std::unique_ptr<IImageManager> IImageManager::Open(const std::string& dir_prefix,
+                                                   const std::chrono::milliseconds& timeout_ms) {
+    (void)timeout_ms;
+    return ImageManager::Open(dir_prefix);
+}
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/split_fiemap_writer.cpp b/fs_mgr/libfiemap/split_fiemap_writer.cpp
new file mode 100644
index 0000000..12c7397
--- /dev/null
+++ b/fs_mgr/libfiemap/split_fiemap_writer.cpp
@@ -0,0 +1,320 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libfiemap/split_fiemap_writer.h>
+
+#include <fcntl.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+
+#include "utility.h"
+
+namespace android {
+namespace fiemap {
+
+using android::base::unique_fd;
+
+// We use a four-digit suffix at the end of filenames.
+static const size_t kMaxFilePieces = 500;
+
+std::unique_ptr<SplitFiemap> SplitFiemap::Create(const std::string& file_path, uint64_t file_size,
+                                                 uint64_t max_piece_size,
+                                                 ProgressCallback progress) {
+    std::unique_ptr<SplitFiemap> ret;
+    if (!Create(file_path, file_size, max_piece_size, &ret, progress).is_ok()) {
+        return nullptr;
+    }
+    return ret;
+}
+
+FiemapStatus SplitFiemap::Create(const std::string& file_path, uint64_t file_size,
+                                 uint64_t max_piece_size, std::unique_ptr<SplitFiemap>* out_val,
+                                 ProgressCallback progress) {
+    out_val->reset();
+
+    if (!file_size) {
+        LOG(ERROR) << "Cannot create a fiemap for a 0-length file: " << file_path;
+        return FiemapStatus::Error();
+    }
+
+    if (!max_piece_size) {
+        auto status = DetermineMaximumFileSize(file_path, &max_piece_size);
+        if (!status.is_ok()) {
+            LOG(ERROR) << "Could not determine maximum file size for " << file_path;
+            return status;
+        }
+    }
+
+    // Remove any existing file.
+    RemoveSplitFiles(file_path);
+
+    // Call |progress| only when the total percentage would significantly change.
+    int permille = -1;
+    uint64_t total_bytes_written = 0;
+    auto on_progress = [&](uint64_t written, uint64_t) -> bool {
+        uint64_t actual_written = total_bytes_written + written;
+        int new_permille = (actual_written * 1000) / file_size;
+        if (new_permille != permille && actual_written < file_size) {
+            if (progress && !progress(actual_written, file_size)) {
+                return false;
+            }
+            permille = new_permille;
+        }
+        return true;
+    };
+    std::unique_ptr<SplitFiemap> out(new SplitFiemap());
+    out->creating_ = true;
+    out->list_file_ = file_path;
+
+    // Create the split files.
+    uint64_t remaining_bytes = file_size;
+    while (remaining_bytes) {
+        if (out->files_.size() >= kMaxFilePieces) {
+            LOG(ERROR) << "Requested size " << file_size << " created too many split files";
+            out.reset();
+            return FiemapStatus::Error();
+        }
+        std::string chunk_path =
+                android::base::StringPrintf("%s.%04d", file_path.c_str(), (int)out->files_.size());
+        uint64_t chunk_size = std::min(max_piece_size, remaining_bytes);
+        FiemapUniquePtr writer;
+        auto status = FiemapWriter::Open(chunk_path, chunk_size, &writer, true, on_progress);
+        if (!status.is_ok()) {
+            out.reset();
+            return status;
+        }
+
+        // To make sure the alignment doesn't create too much inconsistency, we
+        // account the *actual* size, not the requested size.
+        total_bytes_written += writer->size();
+
+        // writer->size() is block size aligned and could be bigger than remaining_bytes
+        // If remaining_bytes is bigger, set remaining_bytes to 0 to avoid underflow error.
+        remaining_bytes = remaining_bytes > writer->size() ? (remaining_bytes - writer->size()) : 0;
+
+        out->AddFile(std::move(writer));
+    }
+
+    // Create the split file list.
+    unique_fd fd(open(out->list_file_.c_str(), O_CREAT | O_WRONLY | O_CLOEXEC, 0660));
+    if (fd < 0) {
+        PLOG(ERROR) << "Failed to open " << file_path;
+        out.reset();
+        return FiemapStatus::FromErrno(errno);
+    }
+
+    for (const auto& writer : out->files_) {
+        std::string line = android::base::Basename(writer->file_path()) + "\n";
+        if (!android::base::WriteFully(fd, line.data(), line.size())) {
+            PLOG(ERROR) << "Write failed " << file_path;
+            out.reset();
+            return FiemapStatus::FromErrno(errno);
+        }
+    }
+
+    // Unset this bit, so we don't unlink on destruction.
+    out->creating_ = false;
+    *out_val = std::move(out);
+    return FiemapStatus::Ok();
+}
+
+std::unique_ptr<SplitFiemap> SplitFiemap::Open(const std::string& file_path) {
+    std::vector<std::string> files;
+    if (!GetSplitFileList(file_path, &files)) {
+        return nullptr;
+    }
+
+    std::unique_ptr<SplitFiemap> out(new SplitFiemap());
+    out->list_file_ = file_path;
+
+    for (const auto& file : files) {
+        auto writer = FiemapWriter::Open(file, 0, false);
+        if (!writer) {
+            // Error was logged in Open().
+            return nullptr;
+        }
+        out->AddFile(std::move(writer));
+    }
+    return out;
+}
+
+bool SplitFiemap::GetSplitFileList(const std::string& file_path, std::vector<std::string>* list) {
+    // This is not the most efficient thing, but it is simple and recovering
+    // the fiemap/fibmap is much more expensive.
+    std::string contents;
+    if (!android::base::ReadFileToString(file_path, &contents, true)) {
+        PLOG(ERROR) << "Error reading file: " << file_path;
+        return false;
+    }
+
+    std::vector<std::string> names = android::base::Split(contents, "\n");
+    std::string dir = android::base::Dirname(file_path);
+    for (const auto& name : names) {
+        if (!name.empty()) {
+            list->emplace_back(dir + "/" + name);
+        }
+    }
+    return true;
+}
+
+bool SplitFiemap::RemoveSplitFiles(const std::string& file_path, std::string* message) {
+    // Early exit if this does not exist, and do not report an error.
+    if (access(file_path.c_str(), F_OK) && errno == ENOENT) {
+        return true;
+    }
+
+    bool ok = true;
+    std::vector<std::string> files;
+    if (GetSplitFileList(file_path, &files)) {
+        for (const auto& file : files) {
+            ok &= android::base::RemoveFileIfExists(file, message);
+        }
+    }
+    ok &= android::base::RemoveFileIfExists(file_path, message);
+    return ok;
+}
+
+bool SplitFiemap::HasPinnedExtents() const {
+    for (const auto& file : files_) {
+        if (!FiemapWriter::HasPinnedExtents(file->file_path())) {
+            return false;
+        }
+    }
+    return true;
+}
+
+const std::vector<struct fiemap_extent>& SplitFiemap::extents() {
+    if (extents_.empty()) {
+        for (const auto& file : files_) {
+            const auto& extents = file->extents();
+            extents_.insert(extents_.end(), extents.begin(), extents.end());
+        }
+    }
+    return extents_;
+}
+
+bool SplitFiemap::Write(const void* data, uint64_t bytes) {
+    // Open the current file.
+    FiemapWriter* file = files_[cursor_index_].get();
+
+    const uint8_t* data_ptr = reinterpret_cast<const uint8_t*>(data);
+    uint64_t bytes_remaining = bytes;
+    while (bytes_remaining) {
+        // How many bytes can we write into the current file?
+        uint64_t file_bytes_left = file->size() - cursor_file_pos_;
+        if (!file_bytes_left) {
+            if (cursor_index_ == files_.size() - 1) {
+                LOG(ERROR) << "write past end of file requested";
+                return false;
+            }
+
+            // No space left in the current file, but we have more files to
+            // use, so prep the next one.
+            cursor_fd_ = {};
+            cursor_file_pos_ = 0;
+            file = files_[++cursor_index_].get();
+            file_bytes_left = file->size();
+        }
+
+        // Open the current file if it's not open.
+        if (cursor_fd_ < 0) {
+            cursor_fd_.reset(open(file->file_path().c_str(), O_CLOEXEC | O_WRONLY));
+            if (cursor_fd_ < 0) {
+                PLOG(ERROR) << "open failed: " << file->file_path();
+                return false;
+            }
+            CHECK(cursor_file_pos_ == 0);
+        }
+
+        if (!FiemapWriter::HasPinnedExtents(file->file_path())) {
+            LOG(ERROR) << "file is no longer pinned: " << file->file_path();
+            return false;
+        }
+
+        uint64_t bytes_to_write = std::min(file_bytes_left, bytes_remaining);
+        if (!android::base::WriteFully(cursor_fd_, data_ptr, bytes_to_write)) {
+            PLOG(ERROR) << "write failed: " << file->file_path();
+            return false;
+        }
+        data_ptr += bytes_to_write;
+        bytes_remaining -= bytes_to_write;
+        cursor_file_pos_ += bytes_to_write;
+    }
+
+    // If we've reached the end of the current file, close it for sanity.
+    if (cursor_file_pos_ == file->size()) {
+        cursor_fd_ = {};
+    }
+    return true;
+}
+
+bool SplitFiemap::Flush() {
+    for (const auto& file : files_) {
+        unique_fd fd(open(file->file_path().c_str(), O_RDONLY | O_CLOEXEC));
+        if (fd < 0) {
+            PLOG(ERROR) << "open failed: " << file->file_path();
+            return false;
+        }
+        if (fsync(fd)) {
+            PLOG(ERROR) << "fsync failed: " << file->file_path();
+            return false;
+        }
+    }
+    return true;
+}
+
+SplitFiemap::~SplitFiemap() {
+    if (!creating_) {
+        return;
+    }
+
+    // We failed to finish creating, so unlink everything.
+    unlink(list_file_.c_str());
+    for (auto&& file : files_) {
+        std::string path = file->file_path();
+        file = nullptr;
+
+        unlink(path.c_str());
+    }
+}
+
+void SplitFiemap::AddFile(FiemapUniquePtr&& file) {
+    total_size_ += file->size();
+    files_.emplace_back(std::move(file));
+}
+
+uint32_t SplitFiemap::block_size() const {
+    return files_[0]->block_size();
+}
+
+const std::string& SplitFiemap::bdev_path() const {
+    return files_[0]->bdev_path();
+}
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/testdata/file_32k b/fs_mgr/libfiemap/testdata/file_32k
similarity index 100%
rename from fs_mgr/libfiemap_writer/testdata/file_32k
rename to fs_mgr/libfiemap/testdata/file_32k
Binary files differ
diff --git a/fs_mgr/libfiemap_writer/testdata/file_4k b/fs_mgr/libfiemap/testdata/file_4k
similarity index 100%
rename from fs_mgr/libfiemap_writer/testdata/file_4k
rename to fs_mgr/libfiemap/testdata/file_4k
Binary files differ
diff --git a/fs_mgr/libfiemap_writer/testdata/unaligned_file b/fs_mgr/libfiemap/testdata/unaligned_file
similarity index 100%
rename from fs_mgr/libfiemap_writer/testdata/unaligned_file
rename to fs_mgr/libfiemap/testdata/unaligned_file
Binary files differ
diff --git a/fs_mgr/libfiemap/utility.cpp b/fs_mgr/libfiemap/utility.cpp
new file mode 100644
index 0000000..bbb0510
--- /dev/null
+++ b/fs_mgr/libfiemap/utility.cpp
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "utility.h"
+
+#include <stdint.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+#include <sys/vfs.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <libfiemap/fiemap_writer.h>
+
+namespace android {
+namespace fiemap {
+
+using namespace std::string_literals;
+using android::base::unique_fd;
+
+static constexpr char kUserdataDevice[] = "/dev/block/by-name/userdata";
+
+FiemapStatus DetermineMaximumFileSize(const std::string& file_path, uint64_t* result) {
+    // Create the smallest file possible (one block).
+    FiemapUniquePtr writer;
+    auto status = FiemapWriter::Open(file_path, 1, &writer);
+    if (!status.is_ok()) {
+        return status;
+    }
+
+    *result = 0;
+    switch (writer->fs_type()) {
+        case EXT4_SUPER_MAGIC:
+            // The minimum is 16GiB, so just report that. If we wanted we could parse the
+            // superblock and figure out if 64-bit support is enabled.
+            *result = 17179869184ULL;
+            break;
+        case F2FS_SUPER_MAGIC:
+            // Formula is from https://www.kernel.org/doc/Documentation/filesystems/f2fs.txt
+            // 4KB * (923 + 2 * 1018 + 2 * 1018 * 1018 + 1018 * 1018 * 1018) := 3.94TB.
+            *result = 4329690886144ULL;
+            break;
+        case MSDOS_SUPER_MAGIC:
+            // 4GB-1, which we want aligned to the block size.
+            *result = 4294967295;
+            *result -= (*result % writer->block_size());
+            break;
+        default:
+            LOG(ERROR) << "Unknown file system type: " << writer->fs_type();
+            break;
+    }
+
+    // Close and delete the temporary file.
+    writer = nullptr;
+    unlink(file_path.c_str());
+
+    return FiemapStatus::Ok();
+}
+
+// Given a SplitFiemap, this returns a device path that will work during first-
+// stage init (i.e., its path can be found by InitRequiredDevices).
+std::string GetDevicePathForFile(SplitFiemap* file) {
+    auto bdev_path = file->bdev_path();
+
+    struct stat userdata, given;
+    if (!stat(bdev_path.c_str(), &given) && !stat(kUserdataDevice, &userdata)) {
+        if (S_ISBLK(given.st_mode) && S_ISBLK(userdata.st_mode) &&
+            given.st_rdev == userdata.st_rdev) {
+            return kUserdataDevice;
+        }
+    }
+    return bdev_path;
+}
+
+std::string JoinPaths(const std::string& dir, const std::string& file) {
+    if (android::base::EndsWith(dir, "/")) {
+        return dir + file;
+    }
+    return dir + "/" + file;
+}
+
+bool F2fsPinBeforeAllocate(int file_fd, bool* supported) {
+    struct stat st;
+    if (fstat(file_fd, &st) < 0) {
+        PLOG(ERROR) << "stat failed";
+        return false;
+    }
+    std::string bdev;
+    if (!BlockDeviceToName(major(st.st_dev), minor(st.st_dev), &bdev)) {
+        LOG(ERROR) << "Failed to get block device name for " << major(st.st_dev) << ":"
+                   << minor(st.st_dev);
+        return false;
+    }
+
+    std::string contents;
+    std::string feature_file = "/sys/fs/f2fs/" + bdev + "/features";
+    if (!android::base::ReadFileToString(feature_file, &contents)) {
+        PLOG(ERROR) << "read failed: " << feature_file;
+        return false;
+    }
+    contents = android::base::Trim(contents);
+
+    auto features = android::base::Split(contents, ", ");
+    auto iter = std::find(features.begin(), features.end(), "pin_file"s);
+    *supported = (iter != features.end());
+    return true;
+}
+
+bool BlockDeviceToName(uint32_t major, uint32_t minor, std::string* bdev_name) {
+    // The symlinks in /sys/dev/block point to the block device node under /sys/device/..
+    // The directory name in the target corresponds to the name of the block device. We use
+    // that to extract the block device name.
+    // e.g for block device name 'ram0', there exists a symlink named '1:0' in /sys/dev/block as
+    // follows.
+    //    1:0 -> ../../devices/virtual/block/ram0
+    std::string sysfs_path = ::android::base::StringPrintf("/sys/dev/block/%u:%u", major, minor);
+    std::string sysfs_bdev;
+
+    if (!::android::base::Readlink(sysfs_path, &sysfs_bdev)) {
+        PLOG(ERROR) << "Failed to read link at: " << sysfs_path;
+        return false;
+    }
+
+    *bdev_name = ::android::base::Basename(sysfs_bdev);
+    // Paranoid sanity check to make sure we just didn't get the
+    // input in return as-is.
+    if (sysfs_bdev == *bdev_name) {
+        LOG(ERROR) << "Malformed symlink for block device: " << sysfs_bdev;
+        return false;
+    }
+
+    return true;
+}
+
+bool FilesystemHasReliablePinning(const std::string& file, bool* supported) {
+    struct statfs64 sfs;
+    if (statfs64(file.c_str(), &sfs)) {
+        PLOG(ERROR) << "statfs failed: " << file;
+        return false;
+    }
+    if (sfs.f_type != F2FS_SUPER_MAGIC) {
+        *supported = true;
+        return true;
+    }
+
+    unique_fd fd(open(file.c_str(), O_RDONLY | O_CLOEXEC));
+    if (fd < 0) {
+        PLOG(ERROR) << "open failed: " << file;
+        return false;
+    }
+    return F2fsPinBeforeAllocate(fd, supported);
+}
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap/utility.h b/fs_mgr/libfiemap/utility.h
new file mode 100644
index 0000000..4c0bc2b
--- /dev/null
+++ b/fs_mgr/libfiemap/utility.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <string>
+
+#include <libfiemap/split_fiemap_writer.h>
+
+namespace android {
+namespace fiemap {
+
+// Given a file that will be created, determine the maximum size its containing
+// filesystem allows. Note this is a theoretical maximum size; free space is
+// ignored entirely.
+FiemapStatus DetermineMaximumFileSize(const std::string& file_path, uint64_t* result);
+
+// Given a SplitFiemap, this returns a device path that will work during first-
+// stage init (i.e., its path can be found by InitRequiredDevices).
+std::string GetDevicePathForFile(android::fiemap::SplitFiemap* file);
+
+// Combine two path components into a single path.
+std::string JoinPaths(const std::string& dir, const std::string& file);
+
+// Given a file within an F2FS filesystem, return whether or not the filesystem
+// supports the "pin_file" feature, which requires pinning before fallocation.
+bool F2fsPinBeforeAllocate(int file_fd, bool* supported);
+
+// Given a major/minor device number, return its canonical name such that
+// /dev/block/<name> resolves to the device.
+bool BlockDeviceToName(uint32_t major, uint32_t minor, std::string* bdev_name);
+
+// This is the same as F2fsPinBeforeAllocate, however, it will return true
+// (and supported = true) for non-f2fs filesystems. It is intended to be used
+// in conjunction with ImageManager to reject image requests for reliable use
+// cases (such as snapshots or adb remount).
+bool FilesystemHasReliablePinning(const std::string& file, bool* supported);
+
+}  // namespace fiemap
+}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/.clang-format b/fs_mgr/libfiemap_writer/.clang-format
deleted file mode 120000
index 8b770a1..0000000
--- a/fs_mgr/libfiemap_writer/.clang-format
+++ /dev/null
@@ -1 +0,0 @@
-../../.clang-format-4
\ No newline at end of file
diff --git a/fs_mgr/libfiemap_writer/Android.bp b/fs_mgr/libfiemap_writer/Android.bp
deleted file mode 100644
index 32fc3d2..0000000
--- a/fs_mgr/libfiemap_writer/Android.bp
+++ /dev/null
@@ -1,63 +0,0 @@
-//
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_library_static {
-    name: "libfiemap_writer",
-    defaults: ["fs_mgr_defaults"],
-    recovery_available: true,
-    export_include_dirs: ["include"],
-    cflags: [
-        "-D_FILE_OFFSET_BITS=64",
-    ],
-
-    srcs: [
-        "fiemap_writer.cpp",
-        "split_fiemap_writer.cpp",
-        "utility.cpp",
-    ],
-
-    static_libs: [
-        "libext4_utils",
-    ],
-
-    header_libs: [
-        "libbase_headers",
-        "liblog_headers",
-    ],
-}
-
-cc_test {
-    name: "fiemap_writer_test",
-    cflags: [
-        "-D_FILE_OFFSET_BITS=64",
-    ],
-    static_libs: [
-        "libbase",
-        "libdm",
-        "libfiemap_writer",
-        "liblog",
-    ],
-
-    data: [
-        "testdata/unaligned_file",
-        "testdata/file_4k",
-        "testdata/file_32k",
-    ],
-
-    srcs: [
-        "fiemap_writer_test.cpp",
-    ],
-}
diff --git a/fs_mgr/libfiemap_writer/Android.mk b/fs_mgr/libfiemap_writer/Android.mk
deleted file mode 100644
index 3c07b8e..0000000
--- a/fs_mgr/libfiemap_writer/Android.mk
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# Copyright (C) 2019 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := VtsFiemapWriterTest
--include test/vts/tools/build/Android.host_config.mk
diff --git a/fs_mgr/libfiemap_writer/AndroidTest.xml b/fs_mgr/libfiemap_writer/AndroidTest.xml
deleted file mode 100644
index 08cff0e..0000000
--- a/fs_mgr/libfiemap_writer/AndroidTest.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2019 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<configuration description="Config for VTS VtsFiemapWriterTest">
-    <option name="config-descriptor:metadata" key="plan" value="vts-kernel" />
-    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.VtsFilePusher">
-        <option name="abort-on-push-failure" value="false"/>
-        <option name="push-group" value="HostDrivenTest.push"/>
-    </target_preparer>
-    <test class="com.android.tradefed.testtype.VtsMultiDeviceTest">
-      <option name="test-module-name" value="VtsFiemapWriterTest"/>
-        <option name="binary-test-source" value="_32bit::DATA/nativetest/fiemap_writer_test/fiemap_writer_test" />
-        <option name="binary-test-source" value="_64bit::DATA/nativetest64/fiemap_writer_test/fiemap_writer_test" />
-        <option name="binary-test-type" value="gtest"/>
-        <option name="test-timeout" value="1m"/>
-    </test>
-</configuration>
diff --git a/fs_mgr/libfiemap_writer/fiemap_writer.cpp b/fs_mgr/libfiemap_writer/fiemap_writer.cpp
deleted file mode 100644
index e3803d5..0000000
--- a/fs_mgr/libfiemap_writer/fiemap_writer.cpp
+++ /dev/null
@@ -1,682 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <libfiemap_writer/fiemap_writer.h>
-
-#include <dirent.h>
-#include <fcntl.h>
-#include <linux/fs.h>
-#include <stdio.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/sysmacros.h>
-#include <sys/types.h>
-#include <sys/vfs.h>
-#include <unistd.h>
-
-#include <limits>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-
-namespace android {
-namespace fiemap_writer {
-
-// We are expecting no more than 512 extents in a fiemap of the file we create.
-// If we find more, then it is treated as error for now.
-static constexpr const uint32_t kMaxExtents = 512;
-
-// TODO: Fallback to using fibmap if FIEMAP_EXTENT_MERGED is set.
-static constexpr const uint32_t kUnsupportedExtentFlags =
-        FIEMAP_EXTENT_UNKNOWN | FIEMAP_EXTENT_UNWRITTEN | FIEMAP_EXTENT_DELALLOC |
-        FIEMAP_EXTENT_NOT_ALIGNED | FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_DATA_TAIL |
-        FIEMAP_EXTENT_UNWRITTEN | FIEMAP_EXTENT_SHARED | FIEMAP_EXTENT_MERGED;
-
-// Large file support must be enabled.
-static_assert(sizeof(off_t) == sizeof(uint64_t));
-
-static inline void cleanup(const std::string& file_path, bool created) {
-    if (created) {
-        unlink(file_path.c_str());
-    }
-}
-
-static bool BlockDeviceToName(uint32_t major, uint32_t minor, std::string* bdev_name) {
-    // The symlinks in /sys/dev/block point to the block device node under /sys/device/..
-    // The directory name in the target corresponds to the name of the block device. We use
-    // that to extract the block device name.
-    // e.g for block device name 'ram0', there exists a symlink named '1:0' in /sys/dev/block as
-    // follows.
-    //    1:0 -> ../../devices/virtual/block/ram0
-    std::string sysfs_path = ::android::base::StringPrintf("/sys/dev/block/%u:%u", major, minor);
-    std::string sysfs_bdev;
-
-    if (!::android::base::Readlink(sysfs_path, &sysfs_bdev)) {
-        PLOG(ERROR) << "Failed to read link at: " << sysfs_path;
-        return false;
-    }
-
-    *bdev_name = ::android::base::Basename(sysfs_bdev);
-    // Paranoid sanity check to make sure we just didn't get the
-    // input in return as-is.
-    if (sysfs_bdev == *bdev_name) {
-        LOG(ERROR) << "Malformed symlink for block device: " << sysfs_bdev;
-        return false;
-    }
-
-    return true;
-}
-
-static bool DeviceMapperStackPop(const std::string& bdev, std::string* bdev_raw) {
-    // TODO: Stop popping the device mapper stack if dm-linear target is found
-    if (!::android::base::StartsWith(bdev, "dm-")) {
-        // We are at the bottom of the device mapper stack.
-        *bdev_raw = bdev;
-        return true;
-    }
-
-    std::string dm_leaf_dir = ::android::base::StringPrintf("/sys/block/%s/slaves", bdev.c_str());
-    auto d = std::unique_ptr<DIR, decltype(&closedir)>(opendir(dm_leaf_dir.c_str()), closedir);
-    if (d == nullptr) {
-        PLOG(ERROR) << "Failed to open: " << dm_leaf_dir;
-        return false;
-    }
-
-    struct dirent* de;
-    uint32_t num_leaves = 0;
-    std::string bdev_next = "";
-    while ((de = readdir(d.get())) != nullptr) {
-        if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
-            continue;
-        }
-
-        // We set the first name we find here
-        if (bdev_next.empty()) {
-            bdev_next = de->d_name;
-        }
-        num_leaves++;
-    }
-
-    // if we have more than one leaves, we return immediately. We can't continue to create the
-    // file since we don't know how to write it out using fiemap, so it will be readable via the
-    // underlying block devices later. The reader will also have to construct the same device mapper
-    // target in order read the file out.
-    if (num_leaves > 1) {
-        LOG(ERROR) << "Found " << num_leaves << " leaf block devices under device mapper device "
-                   << bdev;
-        return false;
-    }
-
-    // recursively call with the block device we found in order to pop the device mapper stack.
-    return DeviceMapperStackPop(bdev_next, bdev_raw);
-}
-
-bool FiemapWriter::GetBlockDeviceForFile(const std::string& file_path, std::string* bdev_path,
-                                         bool* uses_dm) {
-    struct stat sb;
-    if (stat(file_path.c_str(), &sb)) {
-        PLOG(ERROR) << "Failed to get stat for: " << file_path;
-        return false;
-    }
-
-    std::string bdev;
-    if (!BlockDeviceToName(major(sb.st_dev), minor(sb.st_dev), &bdev)) {
-        LOG(ERROR) << "Failed to get block device name for " << major(sb.st_dev) << ":"
-                   << minor(sb.st_dev);
-        return false;
-    }
-
-    std::string bdev_raw;
-    if (!DeviceMapperStackPop(bdev, &bdev_raw)) {
-        LOG(ERROR) << "Failed to get the bottom of the device mapper stack for device: " << bdev;
-        return false;
-    }
-
-    if (uses_dm) {
-        *uses_dm = (bdev_raw != bdev);
-    }
-
-    LOG(DEBUG) << "Popped device (" << bdev_raw << ") from device mapper stack starting with ("
-               << bdev << ")";
-
-    *bdev_path = ::android::base::StringPrintf("/dev/block/%s", bdev_raw.c_str());
-
-    // Make sure we are talking to a block device before calling it a success.
-    if (stat(bdev_path->c_str(), &sb)) {
-        PLOG(ERROR) << "Failed to get stat for block device: " << *bdev_path;
-        return false;
-    }
-
-    if ((sb.st_mode & S_IFMT) != S_IFBLK) {
-        PLOG(ERROR) << "File: " << *bdev_path << " is not a block device";
-        return false;
-    }
-
-    return true;
-}
-
-static bool GetBlockDeviceSize(int bdev_fd, const std::string& bdev_path, uint64_t* bdev_size) {
-    uint64_t size_in_bytes = 0;
-    if (ioctl(bdev_fd, BLKGETSIZE64, &size_in_bytes)) {
-        PLOG(ERROR) << "Failed to get total size for: " << bdev_path;
-        return false;
-    }
-
-    *bdev_size = size_in_bytes;
-
-    return true;
-}
-
-static uint64_t GetFileSize(const std::string& file_path) {
-    struct stat sb;
-    if (stat(file_path.c_str(), &sb)) {
-        PLOG(ERROR) << "Failed to get size for file: " << file_path;
-        return 0;
-    }
-
-    return sb.st_size;
-}
-
-static bool PerformFileChecks(const std::string& file_path, uint64_t file_size, uint64_t* blocksz,
-                              uint32_t* fs_type) {
-    struct statfs64 sfs;
-    if (statfs64(file_path.c_str(), &sfs)) {
-        PLOG(ERROR) << "Failed to read file system status at: " << file_path;
-        return false;
-    }
-
-    if (!sfs.f_bsize) {
-        LOG(ERROR) << "Unsupported block size: " << sfs.f_bsize;
-        return false;
-    }
-
-    // Check if the filesystem is of supported types.
-    // Only ext4, f2fs, and vfat are tested and supported.
-    switch (sfs.f_type) {
-        case EXT4_SUPER_MAGIC:
-        case F2FS_SUPER_MAGIC:
-        case MSDOS_SUPER_MAGIC:
-            break;
-        default:
-            LOG(ERROR) << "Unsupported file system type: 0x" << std::hex << sfs.f_type;
-            return false;
-    }
-
-    uint64_t available_bytes = sfs.f_bsize * sfs.f_bavail;
-    if (available_bytes <= file_size) {
-        LOG(ERROR) << "Not enough free space in file system to create file of size : " << file_size;
-        return false;
-    }
-
-    *blocksz = sfs.f_bsize;
-    *fs_type = sfs.f_type;
-    return true;
-}
-
-static bool FallocateFallback(int file_fd, uint64_t block_size, uint64_t file_size,
-                              const std::string& file_path,
-                              const std::function<bool(uint64_t, uint64_t)>& on_progress) {
-    // Even though this is much faster than writing zeroes, it is still slow
-    // enough that we need to fire the progress callback periodically. To
-    // easily achieve this, we seek in chunks. We use 1000 chunks since
-    // normally we only fire the callback on 1/1000th increments.
-    uint64_t bytes_per_chunk = std::max(file_size / 1000, block_size);
-
-    // Seek just to the end of each chunk and write a single byte, causing
-    // the filesystem to allocate blocks.
-    off_t cursor = 0;
-    off_t end = static_cast<off_t>(file_size);
-    while (cursor < end) {
-        cursor = std::min(static_cast<off_t>(cursor + bytes_per_chunk), end);
-        auto rv = TEMP_FAILURE_RETRY(lseek(file_fd, cursor - 1, SEEK_SET));
-        if (rv < 0) {
-            PLOG(ERROR) << "Failed to lseek " << file_path;
-            return false;
-        }
-        if (rv != cursor - 1) {
-            LOG(ERROR) << "Seek returned wrong offset " << rv << " for file " << file_path;
-            return false;
-        }
-        char buffer[] = {0};
-        if (!android::base::WriteFully(file_fd, buffer, 1)) {
-            PLOG(ERROR) << "Write failed: " << file_path;
-            return false;
-        }
-        if (on_progress && !on_progress(cursor, file_size)) {
-            return false;
-        }
-    }
-    return true;
-}
-
-static bool AllocateFile(int file_fd, const std::string& file_path, uint64_t blocksz,
-                         uint64_t file_size, unsigned int fs_type,
-                         std::function<bool(uint64_t, uint64_t)> on_progress) {
-    // Reserve space for the file on the file system and write it out to make sure the extents
-    // don't come back unwritten. Return from this function with the kernel file offset set to 0.
-    // If the filesystem is f2fs, then we also PIN the file on disk to make sure the blocks
-    // aren't moved around.
-    switch (fs_type) {
-        case EXT4_SUPER_MAGIC:
-        case F2FS_SUPER_MAGIC:
-            if (fallocate(file_fd, FALLOC_FL_ZERO_RANGE, 0, file_size)) {
-                PLOG(ERROR) << "Failed to allocate space for file: " << file_path
-                            << " size: " << file_size;
-                return false;
-            }
-            break;
-        case MSDOS_SUPER_MAGIC:
-            // fallocate() is not supported, and not needed, since VFAT does not support holes.
-            // Instead we can perform a much faster allocation.
-            return FallocateFallback(file_fd, blocksz, file_size, file_path, on_progress);
-        default:
-            LOG(ERROR) << "Missing fallocate() support for file system " << fs_type;
-            return false;
-    }
-
-    // write zeroes in 'blocksz' byte increments until we reach file_size to make sure the data
-    // blocks are actually written to by the file system and thus getting rid of the holes in the
-    // file.
-    auto buffer = std::unique_ptr<void, decltype(&free)>(calloc(1, blocksz), free);
-    if (buffer == nullptr) {
-        LOG(ERROR) << "failed to allocate memory for writing file";
-        return false;
-    }
-
-    off64_t offset = lseek64(file_fd, 0, SEEK_SET);
-    if (offset < 0) {
-        PLOG(ERROR) << "Failed to seek at the beginning of : " << file_path;
-        return false;
-    }
-
-    int permille = -1;
-    while (offset < file_size) {
-        if (!::android::base::WriteFully(file_fd, buffer.get(), blocksz)) {
-            PLOG(ERROR) << "Failed to write" << blocksz << " bytes at offset" << offset
-                        << " in file " << file_path;
-            return false;
-        }
-
-        offset += blocksz;
-
-        // Don't invoke the callback every iteration - wait until a significant
-        // chunk (here, 1/1000th) of the data has been processed.
-        int new_permille = (static_cast<uint64_t>(offset) * 1000) / file_size;
-        if (new_permille != permille && static_cast<uint64_t>(offset) != file_size) {
-            if (on_progress && !on_progress(offset, file_size)) {
-                return false;
-            }
-            permille = new_permille;
-        }
-    }
-
-    if (lseek64(file_fd, 0, SEEK_SET) < 0) {
-        PLOG(ERROR) << "Failed to reset offset at the beginning of : " << file_path;
-        return false;
-    }
-
-    // flush all writes here ..
-    if (fsync(file_fd)) {
-        PLOG(ERROR) << "Failed to synchronize written file:" << file_path;
-        return false;
-    }
-
-    // Send one last progress notification.
-    if (on_progress && !on_progress(file_size, file_size)) {
-        return false;
-    }
-    return true;
-}
-
-static bool PinFile(int file_fd, const std::string& file_path, uint32_t fs_type) {
-    if (fs_type != F2FS_SUPER_MAGIC) {
-        // No pinning necessary for ext4/msdos. The blocks, once allocated, are
-        // expected to be fixed.
-        return true;
-    }
-
-// F2FS-specific ioctl
-// It requires the below kernel commit merged in v4.16-rc1.
-//   1ad71a27124c ("f2fs: add an ioctl to disable GC for specific file")
-// In android-4.4,
-//   56ee1e817908 ("f2fs: updates on v4.16-rc1")
-// In android-4.9,
-//   2f17e34672a8 ("f2fs: updates on v4.16-rc1")
-// In android-4.14,
-//   ce767d9a55bc ("f2fs: updates on v4.16-rc1")
-#ifndef F2FS_IOC_SET_PIN_FILE
-#ifndef F2FS_IOCTL_MAGIC
-#define F2FS_IOCTL_MAGIC 0xf5
-#endif
-#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
-#endif
-
-    uint32_t pin_status = 1;
-    int error = ioctl(file_fd, F2FS_IOC_SET_PIN_FILE, &pin_status);
-    if (error < 0) {
-        if ((errno == ENOTTY) || (errno == ENOTSUP)) {
-            PLOG(ERROR) << "Failed to pin file, not supported by kernel: " << file_path;
-        } else {
-            PLOG(ERROR) << "Failed to pin file: " << file_path;
-        }
-        return false;
-    }
-
-    return true;
-}
-
-static bool IsFilePinned(int file_fd, const std::string& file_path, uint32_t fs_type) {
-    if (fs_type != F2FS_SUPER_MAGIC) {
-        // No pinning necessary for ext4 or vfat. The blocks, once allocated,
-        // are expected to be fixed.
-        return true;
-    }
-
-// F2FS-specific ioctl
-// It requires the below kernel commit merged in v4.16-rc1.
-//   1ad71a27124c ("f2fs: add an ioctl to disable GC for specific file")
-// In android-4.4,
-//   56ee1e817908 ("f2fs: updates on v4.16-rc1")
-// In android-4.9,
-//   2f17e34672a8 ("f2fs: updates on v4.16-rc1")
-// In android-4.14,
-//   ce767d9a55bc ("f2fs: updates on v4.16-rc1")
-#ifndef F2FS_IOC_GET_PIN_FILE
-#ifndef F2FS_IOCTL_MAGIC
-#define F2FS_IOCTL_MAGIC 0xf5
-#endif
-#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
-#endif
-
-    // f2fs: export FS_NOCOW_FL flag to user
-    uint32_t flags;
-    int error = ioctl(file_fd, FS_IOC_GETFLAGS, &flags);
-    if (error < 0) {
-        if ((errno == ENOTTY) || (errno == ENOTSUP)) {
-            PLOG(ERROR) << "Failed to get flags, not supported by kernel: " << file_path;
-        } else {
-            PLOG(ERROR) << "Failed to get flags: " << file_path;
-        }
-        return false;
-    }
-    if (!(flags & FS_NOCOW_FL)) {
-        LOG(ERROR) << "It is not pinned: " << file_path;
-        return false;
-    }
-
-    // F2FS_IOC_GET_PIN_FILE returns the number of blocks moved.
-    uint32_t moved_blocks_nr;
-    error = ioctl(file_fd, F2FS_IOC_GET_PIN_FILE, &moved_blocks_nr);
-    if (error < 0) {
-        if ((errno == ENOTTY) || (errno == ENOTSUP)) {
-            PLOG(ERROR) << "Failed to get file pin status, not supported by kernel: " << file_path;
-        } else {
-            PLOG(ERROR) << "Failed to get file pin status: " << file_path;
-        }
-        return false;
-    }
-
-    if (moved_blocks_nr) {
-        LOG(ERROR) << moved_blocks_nr << " blocks moved in file " << file_path;
-    }
-    return moved_blocks_nr == 0;
-}
-
-bool FiemapWriter::HasPinnedExtents(const std::string& file_path) {
-    android::base::unique_fd fd(open(file_path.c_str(), O_NOFOLLOW | O_CLOEXEC | O_RDONLY));
-    if (fd < 0) {
-        PLOG(ERROR) << "open: " << file_path;
-        return false;
-    }
-
-    struct statfs64 sfs;
-    if (fstatfs64(fd, &sfs)) {
-        PLOG(ERROR) << "fstatfs64: " << file_path;
-        return false;
-    }
-    return IsFilePinned(fd, file_path, sfs.f_type);
-}
-
-static bool ReadFiemap(int file_fd, const std::string& file_path,
-                       std::vector<struct fiemap_extent>* extents) {
-    uint64_t fiemap_size =
-            sizeof(struct fiemap_extent) + kMaxExtents * sizeof(struct fiemap_extent);
-    auto buffer = std::unique_ptr<void, decltype(&free)>(calloc(1, fiemap_size), free);
-    if (buffer == nullptr) {
-        LOG(ERROR) << "Failed to allocate memory for fiemap";
-        return false;
-    }
-
-    struct fiemap* fiemap = reinterpret_cast<struct fiemap*>(buffer.get());
-    fiemap->fm_start = 0;
-    fiemap->fm_length = UINT64_MAX;
-    // make sure file is synced to disk before we read the fiemap
-    fiemap->fm_flags = FIEMAP_FLAG_SYNC;
-    fiemap->fm_extent_count = kMaxExtents;
-
-    if (ioctl(file_fd, FS_IOC_FIEMAP, fiemap)) {
-        PLOG(ERROR) << "Failed to get FIEMAP from the kernel for file: " << file_path;
-        return false;
-    }
-
-    if (fiemap->fm_mapped_extents == 0) {
-        LOG(ERROR) << "File " << file_path << " has zero extents";
-        return false;
-    }
-
-    // Iterate through each extent read and make sure its valid before adding it to the vector
-    bool last_extent_seen = false;
-    struct fiemap_extent* extent = &fiemap->fm_extents[0];
-    for (uint32_t i = 0; i < fiemap->fm_mapped_extents; i++, extent++) {
-        // LogExtent(i + 1, *extent);
-        if (extent->fe_flags & kUnsupportedExtentFlags) {
-            LOG(ERROR) << "Extent " << i + 1 << " of file " << file_path
-                       << " has unsupported flags";
-            extents->clear();
-            return false;
-        }
-
-        if (extent->fe_flags & FIEMAP_EXTENT_LAST) {
-            last_extent_seen = true;
-            if (i != (fiemap->fm_mapped_extents - 1)) {
-                LOG(WARNING) << "Extents are being received out-of-order";
-            }
-        }
-        extents->emplace_back(std::move(*extent));
-    }
-
-    if (!last_extent_seen) {
-        // The file is possibly too fragmented.
-        if (fiemap->fm_mapped_extents == kMaxExtents) {
-            LOG(ERROR) << "File is too fragmented, needs more than " << kMaxExtents << " extents.";
-        }
-        extents->clear();
-    }
-
-    return last_extent_seen;
-}
-
-static bool ReadFibmap(int file_fd, const std::string& file_path,
-                       std::vector<struct fiemap_extent>* extents) {
-    struct stat s;
-    if (fstat(file_fd, &s)) {
-        PLOG(ERROR) << "Failed to stat " << file_path;
-        return false;
-    }
-
-    unsigned int blksize;
-    if (ioctl(file_fd, FIGETBSZ, &blksize) < 0) {
-        PLOG(ERROR) << "Failed to get FIGETBSZ for " << file_path;
-        return false;
-    }
-    if (!blksize) {
-        LOG(ERROR) << "Invalid filesystem block size: " << blksize;
-        return false;
-    }
-
-    uint64_t num_blocks = (s.st_size + blksize - 1) / blksize;
-    if (num_blocks > std::numeric_limits<uint32_t>::max()) {
-        LOG(ERROR) << "Too many blocks for FIBMAP (" << num_blocks << ")";
-        return false;
-    }
-
-    for (uint32_t last_block, block_number = 0; block_number < num_blocks; block_number++) {
-        uint32_t block = block_number;
-        if (ioctl(file_fd, FIBMAP, &block)) {
-            PLOG(ERROR) << "Failed to get FIBMAP for file " << file_path;
-            return false;
-        }
-        if (!block) {
-            LOG(ERROR) << "Logical block " << block_number << " is a hole, which is not supported";
-            return false;
-        }
-
-        if (!extents->empty() && block == last_block + 1) {
-            extents->back().fe_length += blksize;
-        } else {
-            extents->push_back(fiemap_extent{.fe_logical = block_number,
-                                             .fe_physical = static_cast<uint64_t>(block) * blksize,
-                                             .fe_length = static_cast<uint64_t>(blksize),
-                                             .fe_flags = 0});
-        }
-        last_block = block;
-    }
-    return true;
-}
-
-FiemapUniquePtr FiemapWriter::Open(const std::string& file_path, uint64_t file_size, bool create,
-                                   std::function<bool(uint64_t, uint64_t)> progress) {
-    // if 'create' is false, open an existing file and do not truncate.
-    int open_flags = O_RDWR | O_CLOEXEC;
-    if (create) {
-        if (access(file_path.c_str(), F_OK) == 0) {
-            LOG(WARNING) << "File " << file_path << " already exists, truncating";
-        }
-        open_flags |= O_CREAT | O_TRUNC;
-    }
-    ::android::base::unique_fd file_fd(
-            TEMP_FAILURE_RETRY(open(file_path.c_str(), open_flags, S_IRUSR | S_IWUSR)));
-    if (file_fd < 0) {
-        PLOG(ERROR) << "Failed to create file at: " << file_path;
-        return nullptr;
-    }
-
-    std::string abs_path;
-    if (!::android::base::Realpath(file_path, &abs_path)) {
-        PLOG(ERROR) << "Invalid file path: " << file_path;
-        cleanup(file_path, create);
-        return nullptr;
-    }
-
-    std::string bdev_path;
-    if (!GetBlockDeviceForFile(abs_path, &bdev_path)) {
-        LOG(ERROR) << "Failed to get block dev path for file: " << file_path;
-        cleanup(abs_path, create);
-        return nullptr;
-    }
-
-    ::android::base::unique_fd bdev_fd(
-            TEMP_FAILURE_RETRY(open(bdev_path.c_str(), O_RDONLY | O_CLOEXEC)));
-    if (bdev_fd < 0) {
-        PLOG(ERROR) << "Failed to open block device: " << bdev_path;
-        cleanup(file_path, create);
-        return nullptr;
-    }
-
-    uint64_t bdevsz;
-    if (!GetBlockDeviceSize(bdev_fd, bdev_path, &bdevsz)) {
-        LOG(ERROR) << "Failed to get block device size for : " << bdev_path;
-        cleanup(file_path, create);
-        return nullptr;
-    }
-
-    if (!create) {
-        file_size = GetFileSize(abs_path);
-        if (file_size == 0) {
-            LOG(ERROR) << "Invalid file size of zero bytes for file: " << abs_path;
-            return nullptr;
-        }
-    }
-
-    uint64_t blocksz;
-    uint32_t fs_type;
-    if (!PerformFileChecks(abs_path, file_size, &blocksz, &fs_type)) {
-        LOG(ERROR) << "Failed to validate file or file system for file:" << abs_path;
-        cleanup(abs_path, create);
-        return nullptr;
-    }
-
-    // Align up to the nearest block size.
-    if (file_size % blocksz) {
-        file_size += blocksz - (file_size % blocksz);
-    }
-
-    if (create) {
-        if (!AllocateFile(file_fd, abs_path, blocksz, file_size, fs_type, std::move(progress))) {
-            LOG(ERROR) << "Failed to allocate file: " << abs_path << " of size: " << file_size
-                       << " bytes";
-            cleanup(abs_path, create);
-            return nullptr;
-        }
-    }
-
-    // f2fs may move the file blocks around.
-    if (!PinFile(file_fd, abs_path, fs_type)) {
-        cleanup(abs_path, create);
-        LOG(ERROR) << "Failed to pin the file in storage";
-        return nullptr;
-    }
-
-    // now allocate the FiemapWriter and start setting it up
-    FiemapUniquePtr fmap(new FiemapWriter());
-    switch (fs_type) {
-        case EXT4_SUPER_MAGIC:
-        case F2FS_SUPER_MAGIC:
-            if (!ReadFiemap(file_fd, abs_path, &fmap->extents_)) {
-                LOG(ERROR) << "Failed to read fiemap of file: " << abs_path;
-                cleanup(abs_path, create);
-                return nullptr;
-            }
-            break;
-        case MSDOS_SUPER_MAGIC:
-            if (!ReadFibmap(file_fd, abs_path, &fmap->extents_)) {
-                LOG(ERROR) << "Failed to read fibmap of file: " << abs_path;
-                cleanup(abs_path, create);
-                return nullptr;
-            }
-            break;
-    }
-
-    fmap->file_path_ = abs_path;
-    fmap->bdev_path_ = bdev_path;
-    fmap->file_size_ = file_size;
-    fmap->bdev_size_ = bdevsz;
-    fmap->fs_type_ = fs_type;
-    fmap->block_size_ = blocksz;
-
-    LOG(VERBOSE) << "Successfully created FiemapWriter for file " << abs_path << " on block device "
-                 << bdev_path;
-    return fmap;
-}
-
-}  // namespace fiemap_writer
-}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/fiemap_writer_test.cpp b/fs_mgr/libfiemap_writer/fiemap_writer_test.cpp
deleted file mode 100644
index dda7dfd..0000000
--- a/fs_mgr/libfiemap_writer/fiemap_writer_test.cpp
+++ /dev/null
@@ -1,541 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/vfs.h>
-#include <unistd.h>
-
-#include <string>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/unique_fd.h>
-#include <gtest/gtest.h>
-#include <libdm/loop_control.h>
-#include <libfiemap_writer/fiemap_writer.h>
-#include <libfiemap_writer/split_fiemap_writer.h>
-
-#include "utility.h"
-
-namespace android {
-namespace fiemap_writer {
-
-using namespace std;
-using namespace std::string_literals;
-using namespace android::fiemap_writer;
-using unique_fd = android::base::unique_fd;
-using LoopDevice = android::dm::LoopDevice;
-
-std::string gTestDir;
-uint64_t testfile_size = 536870912;  // default of 512MiB
-size_t gBlockSize = 0;
-
-class FiemapWriterTest : public ::testing::Test {
-  protected:
-    void SetUp() override {
-        const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
-        testfile = gTestDir + "/"s + tinfo->name();
-    }
-
-    void TearDown() override { unlink(testfile.c_str()); }
-
-    // name of the file we use for testing
-    std::string testfile;
-};
-
-class SplitFiemapTest : public ::testing::Test {
-  protected:
-    void SetUp() override {
-        const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
-        testfile = gTestDir + "/"s + tinfo->name();
-    }
-
-    void TearDown() override {
-        std::string message;
-        if (!SplitFiemap::RemoveSplitFiles(testfile, &message)) {
-            cerr << "Could not remove all split files: " << message;
-        }
-    }
-
-    // name of the file we use for testing
-    std::string testfile;
-};
-
-TEST_F(FiemapWriterTest, CreateImpossiblyLargeFile) {
-    // Try creating a file of size ~100TB but aligned to
-    // 512 byte to make sure block alignment tests don't
-    // fail.
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, 1099511627997184);
-    EXPECT_EQ(fptr, nullptr);
-    EXPECT_EQ(access(testfile.c_str(), F_OK), -1);
-    EXPECT_EQ(errno, ENOENT);
-}
-
-TEST_F(FiemapWriterTest, CreateUnalignedFile) {
-    // Try creating a file of size 4097 bytes which is guaranteed
-    // to be unaligned to all known block sizes.
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize + 1);
-    ASSERT_NE(fptr, nullptr);
-    ASSERT_EQ(fptr->size(), gBlockSize * 2);
-}
-
-TEST_F(FiemapWriterTest, CheckFilePath) {
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize);
-    ASSERT_NE(fptr, nullptr);
-    EXPECT_EQ(fptr->size(), gBlockSize);
-    EXPECT_EQ(fptr->file_path(), testfile);
-    EXPECT_EQ(access(testfile.c_str(), F_OK), 0);
-}
-
-TEST_F(FiemapWriterTest, CheckFileSize) {
-    // Create a large-ish file and test that the expected size matches.
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, 1024 * 1024 * 16);
-    ASSERT_NE(fptr, nullptr);
-
-    struct stat s;
-    ASSERT_EQ(stat(testfile.c_str(), &s), 0);
-    EXPECT_EQ(static_cast<uint64_t>(s.st_size), fptr->size());
-}
-
-TEST_F(FiemapWriterTest, CheckProgress) {
-    std::vector<uint64_t> expected;
-    size_t invocations = 0;
-    auto callback = [&](uint64_t done, uint64_t total) -> bool {
-        if (invocations >= expected.size()) {
-            return false;
-        }
-        EXPECT_EQ(done, expected[invocations]);
-        EXPECT_EQ(total, gBlockSize);
-        invocations++;
-        return true;
-    };
-
-    expected.push_back(gBlockSize);
-
-    auto ptr = FiemapWriter::Open(testfile, gBlockSize, true, std::move(callback));
-    EXPECT_NE(ptr, nullptr);
-    EXPECT_EQ(invocations, expected.size());
-}
-
-TEST_F(FiemapWriterTest, CheckPinning) {
-    auto ptr = FiemapWriter::Open(testfile, 4096);
-    ASSERT_NE(ptr, nullptr);
-    EXPECT_TRUE(FiemapWriter::HasPinnedExtents(testfile));
-}
-
-TEST_F(FiemapWriterTest, CheckBlockDevicePath) {
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize);
-    EXPECT_EQ(fptr->size(), gBlockSize);
-    EXPECT_EQ(fptr->bdev_path().find("/dev/block/"), size_t(0));
-    EXPECT_EQ(fptr->bdev_path().find("/dev/block/dm-"), string::npos);
-}
-
-TEST_F(FiemapWriterTest, CheckFileCreated) {
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, 32768);
-    ASSERT_NE(fptr, nullptr);
-    unique_fd fd(open(testfile.c_str(), O_RDONLY));
-    EXPECT_GT(fd, -1);
-}
-
-TEST_F(FiemapWriterTest, CheckFileSizeActual) {
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, testfile_size);
-    ASSERT_NE(fptr, nullptr);
-
-    struct stat sb;
-    ASSERT_EQ(stat(testfile.c_str(), &sb), 0);
-    EXPECT_GE(sb.st_size, testfile_size);
-}
-
-TEST_F(FiemapWriterTest, CheckFileExtents) {
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, testfile_size);
-    ASSERT_NE(fptr, nullptr);
-    EXPECT_GT(fptr->extents().size(), 0);
-}
-
-TEST_F(FiemapWriterTest, ExistingFile) {
-    // Create the file.
-    { ASSERT_NE(FiemapWriter::Open(testfile, gBlockSize), nullptr); }
-    // Test that we can still open it.
-    {
-        auto ptr = FiemapWriter::Open(testfile, 0, false);
-        ASSERT_NE(ptr, nullptr);
-        EXPECT_GT(ptr->extents().size(), 0);
-    }
-}
-
-TEST_F(FiemapWriterTest, FileDeletedOnError) {
-    auto callback = [](uint64_t, uint64_t) -> bool { return false; };
-    auto ptr = FiemapWriter::Open(testfile, gBlockSize, true, std::move(callback));
-    EXPECT_EQ(ptr, nullptr);
-    EXPECT_EQ(access(testfile.c_str(), F_OK), -1);
-    EXPECT_EQ(errno, ENOENT);
-}
-
-TEST_F(FiemapWriterTest, MaxBlockSize) {
-    ASSERT_GT(DetermineMaximumFileSize(testfile), 0);
-}
-
-TEST_F(FiemapWriterTest, FibmapBlockAddressing) {
-    FiemapUniquePtr fptr = FiemapWriter::Open(testfile, gBlockSize);
-    ASSERT_NE(fptr, nullptr);
-
-    switch (fptr->fs_type()) {
-        case F2FS_SUPER_MAGIC:
-        case EXT4_SUPER_MAGIC:
-            // Skip the test for FIEMAP supported filesystems. This is really
-            // because f2fs/ext4 have caches that seem to defeat reading back
-            // directly from the block device, and writing directly is too
-            // dangerous.
-            std::cout << "Skipping test, filesystem does not use FIBMAP\n";
-            return;
-    }
-
-    bool uses_dm;
-    std::string bdev_path;
-    ASSERT_TRUE(FiemapWriter::GetBlockDeviceForFile(testfile, &bdev_path, &uses_dm));
-
-    if (uses_dm) {
-        // We could use a device-mapper wrapper here to bypass encryption, but
-        // really this test is for FIBMAP correctness on VFAT (where encryption
-        // is never used), so we don't bother.
-        std::cout << "Skipping test, block device is metadata encrypted\n";
-        return;
-    }
-
-    std::string data(fptr->size(), '\0');
-    for (size_t i = 0; i < data.size(); i++) {
-        data[i] = 'A' + static_cast<char>(data.size() % 26);
-    }
-
-    {
-        unique_fd fd(open(testfile.c_str(), O_WRONLY | O_CLOEXEC));
-        ASSERT_GE(fd, 0);
-        ASSERT_TRUE(android::base::WriteFully(fd, data.data(), data.size()));
-        ASSERT_EQ(fsync(fd), 0);
-    }
-
-    ASSERT_FALSE(fptr->extents().empty());
-    const auto& first_extent = fptr->extents()[0];
-
-    unique_fd bdev(open(fptr->bdev_path().c_str(), O_RDONLY | O_CLOEXEC));
-    ASSERT_GE(bdev, 0);
-
-    off_t where = first_extent.fe_physical;
-    ASSERT_EQ(lseek(bdev, where, SEEK_SET), where);
-
-    // Note: this will fail on encrypted folders.
-    std::string actual(data.size(), '\0');
-    ASSERT_GE(first_extent.fe_length, data.size());
-    ASSERT_TRUE(android::base::ReadFully(bdev, actual.data(), actual.size()));
-    EXPECT_EQ(memcmp(actual.data(), data.data(), data.size()), 0);
-}
-
-TEST_F(SplitFiemapTest, Create) {
-    auto ptr = SplitFiemap::Create(testfile, 1024 * 768, 1024 * 32);
-    ASSERT_NE(ptr, nullptr);
-
-    auto extents = ptr->extents();
-
-    // Destroy the fiemap, closing file handles. This should not delete them.
-    ptr = nullptr;
-
-    std::vector<std::string> files;
-    ASSERT_TRUE(SplitFiemap::GetSplitFileList(testfile, &files));
-    for (const auto& path : files) {
-        EXPECT_EQ(access(path.c_str(), F_OK), 0);
-    }
-
-    ASSERT_GE(extents.size(), files.size());
-}
-
-TEST_F(SplitFiemapTest, Open) {
-    {
-        auto ptr = SplitFiemap::Create(testfile, 1024 * 768, 1024 * 32);
-        ASSERT_NE(ptr, nullptr);
-    }
-
-    auto ptr = SplitFiemap::Open(testfile);
-    ASSERT_NE(ptr, nullptr);
-
-    auto extents = ptr->extents();
-    ASSERT_GE(extents.size(), 24);
-}
-
-TEST_F(SplitFiemapTest, DeleteOnFail) {
-    auto ptr = SplitFiemap::Create(testfile, 1024 * 1024 * 100, 1);
-    ASSERT_EQ(ptr, nullptr);
-
-    std::string first_file = testfile + ".0001";
-    ASSERT_NE(access(first_file.c_str(), F_OK), 0);
-    ASSERT_EQ(errno, ENOENT);
-    ASSERT_NE(access(testfile.c_str(), F_OK), 0);
-    ASSERT_EQ(errno, ENOENT);
-}
-
-static string ReadSplitFiles(const std::string& base_path, size_t num_files) {
-    std::string result;
-    for (int i = 0; i < num_files; i++) {
-        std::string path = base_path + android::base::StringPrintf(".%04d", i);
-        std::string data;
-        if (!android::base::ReadFileToString(path, &data)) {
-            return {};
-        }
-        result += data;
-    }
-    return result;
-}
-
-TEST_F(SplitFiemapTest, WriteWholeFile) {
-    static constexpr size_t kChunkSize = 32768;
-    static constexpr size_t kSize = kChunkSize * 3;
-    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
-    ASSERT_NE(ptr, nullptr);
-
-    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
-    for (size_t i = 0; i < kSize / sizeof(int); i++) {
-        buffer[i] = i;
-    }
-    ASSERT_TRUE(ptr->Write(buffer.get(), kSize));
-
-    std::string expected(reinterpret_cast<char*>(buffer.get()), kSize);
-    auto actual = ReadSplitFiles(testfile, 3);
-    ASSERT_EQ(expected.size(), actual.size());
-    EXPECT_EQ(memcmp(expected.data(), actual.data(), actual.size()), 0);
-}
-
-TEST_F(SplitFiemapTest, WriteFileInChunks1) {
-    static constexpr size_t kChunkSize = 32768;
-    static constexpr size_t kSize = kChunkSize * 3;
-    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
-    ASSERT_NE(ptr, nullptr);
-
-    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
-    for (size_t i = 0; i < kSize / sizeof(int); i++) {
-        buffer[i] = i;
-    }
-
-    // Write in chunks of 1000 (so some writes straddle the boundary of two
-    // files).
-    size_t bytes_written = 0;
-    while (bytes_written < kSize) {
-        size_t to_write = std::min(kSize - bytes_written, (size_t)1000);
-        char* data = reinterpret_cast<char*>(buffer.get()) + bytes_written;
-        ASSERT_TRUE(ptr->Write(data, to_write));
-        bytes_written += to_write;
-    }
-
-    std::string expected(reinterpret_cast<char*>(buffer.get()), kSize);
-    auto actual = ReadSplitFiles(testfile, 3);
-    ASSERT_EQ(expected.size(), actual.size());
-    EXPECT_EQ(memcmp(expected.data(), actual.data(), actual.size()), 0);
-}
-
-TEST_F(SplitFiemapTest, WriteFileInChunks2) {
-    static constexpr size_t kChunkSize = 32768;
-    static constexpr size_t kSize = kChunkSize * 3;
-    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
-    ASSERT_NE(ptr, nullptr);
-
-    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
-    for (size_t i = 0; i < kSize / sizeof(int); i++) {
-        buffer[i] = i;
-    }
-
-    // Write in chunks of 32KiB so every write is exactly at the end of the
-    // current file.
-    size_t bytes_written = 0;
-    while (bytes_written < kSize) {
-        size_t to_write = std::min(kSize - bytes_written, kChunkSize);
-        char* data = reinterpret_cast<char*>(buffer.get()) + bytes_written;
-        ASSERT_TRUE(ptr->Write(data, to_write));
-        bytes_written += to_write;
-    }
-
-    std::string expected(reinterpret_cast<char*>(buffer.get()), kSize);
-    auto actual = ReadSplitFiles(testfile, 3);
-    ASSERT_EQ(expected.size(), actual.size());
-    EXPECT_EQ(memcmp(expected.data(), actual.data(), actual.size()), 0);
-}
-
-TEST_F(SplitFiemapTest, WritePastEnd) {
-    static constexpr size_t kChunkSize = 32768;
-    static constexpr size_t kSize = kChunkSize * 3;
-    auto ptr = SplitFiemap::Create(testfile, kSize, kChunkSize);
-    ASSERT_NE(ptr, nullptr);
-
-    auto buffer = std::make_unique<int[]>(kSize / sizeof(int));
-    for (size_t i = 0; i < kSize / sizeof(int); i++) {
-        buffer[i] = i;
-    }
-    ASSERT_TRUE(ptr->Write(buffer.get(), kSize));
-    ASSERT_FALSE(ptr->Write(buffer.get(), kSize));
-}
-
-class VerifyBlockWritesExt4 : public ::testing::Test {
-    // 2GB Filesystem and 4k block size by default
-    static constexpr uint64_t block_size = 4096;
-    static constexpr uint64_t fs_size = 2147483648;
-
-  protected:
-    void SetUp() override {
-        fs_path = std::string(getenv("TMPDIR")) + "/ext4_2G.img";
-        uint64_t count = fs_size / block_size;
-        std::string dd_cmd =
-                ::android::base::StringPrintf("/system/bin/dd if=/dev/zero of=%s bs=%" PRIu64
-                                              " count=%" PRIu64 " > /dev/null 2>&1",
-                                              fs_path.c_str(), block_size, count);
-        std::string mkfs_cmd =
-                ::android::base::StringPrintf("/system/bin/mkfs.ext4 -q %s", fs_path.c_str());
-        // create mount point
-        mntpoint = std::string(getenv("TMPDIR")) + "/fiemap_mnt";
-        ASSERT_EQ(mkdir(mntpoint.c_str(), S_IRWXU), 0);
-        // create file for the file system
-        int ret = system(dd_cmd.c_str());
-        ASSERT_EQ(ret, 0);
-        // Get and attach a loop device to the filesystem we created
-        LoopDevice loop_dev(fs_path);
-        ASSERT_TRUE(loop_dev.valid());
-        // create file system
-        ret = system(mkfs_cmd.c_str());
-        ASSERT_EQ(ret, 0);
-
-        // mount the file system
-        ASSERT_EQ(mount(loop_dev.device().c_str(), mntpoint.c_str(), "ext4", 0, nullptr), 0);
-    }
-
-    void TearDown() override {
-        umount(mntpoint.c_str());
-        rmdir(mntpoint.c_str());
-        unlink(fs_path.c_str());
-    }
-
-    std::string mntpoint;
-    std::string fs_path;
-};
-
-class VerifyBlockWritesF2fs : public ::testing::Test {
-    // 2GB Filesystem and 4k block size by default
-    static constexpr uint64_t block_size = 4096;
-    static constexpr uint64_t fs_size = 2147483648;
-
-  protected:
-    void SetUp() override {
-        fs_path = std::string(getenv("TMPDIR")) + "/f2fs_2G.img";
-        uint64_t count = fs_size / block_size;
-        std::string dd_cmd =
-                ::android::base::StringPrintf("/system/bin/dd if=/dev/zero of=%s bs=%" PRIu64
-                                              " count=%" PRIu64 " > /dev/null 2>&1",
-                                              fs_path.c_str(), block_size, count);
-        std::string mkfs_cmd =
-                ::android::base::StringPrintf("/system/bin/make_f2fs -q %s", fs_path.c_str());
-        // create mount point
-        mntpoint = std::string(getenv("TMPDIR")) + "/fiemap_mnt";
-        ASSERT_EQ(mkdir(mntpoint.c_str(), S_IRWXU), 0);
-        // create file for the file system
-        int ret = system(dd_cmd.c_str());
-        ASSERT_EQ(ret, 0);
-        // Get and attach a loop device to the filesystem we created
-        LoopDevice loop_dev(fs_path);
-        ASSERT_TRUE(loop_dev.valid());
-        // create file system
-        ret = system(mkfs_cmd.c_str());
-        ASSERT_EQ(ret, 0);
-
-        // mount the file system
-        ASSERT_EQ(mount(loop_dev.device().c_str(), mntpoint.c_str(), "f2fs", 0, nullptr), 0);
-    }
-
-    void TearDown() override {
-        umount(mntpoint.c_str());
-        rmdir(mntpoint.c_str());
-        unlink(fs_path.c_str());
-    }
-
-    std::string mntpoint;
-    std::string fs_path;
-};
-
-bool DetermineBlockSize() {
-    struct statfs s;
-    if (statfs(gTestDir.c_str(), &s)) {
-        std::cerr << "Could not call statfs: " << strerror(errno) << "\n";
-        return false;
-    }
-    if (!s.f_bsize) {
-        std::cerr << "Invalid block size: " << s.f_bsize << "\n";
-        return false;
-    }
-
-    gBlockSize = s.f_bsize;
-    return true;
-}
-
-}  // namespace fiemap_writer
-}  // namespace android
-
-using namespace android::fiemap_writer;
-
-int main(int argc, char** argv) {
-    ::testing::InitGoogleTest(&argc, argv);
-    if (argc > 1 && argv[1] == "-h"s) {
-        cerr << "Usage: [test_dir] [file_size]\n";
-        cerr << "\n";
-        cerr << "Note: test_dir must be a writable, unencrypted directory.\n";
-        exit(EXIT_FAILURE);
-    }
-    ::android::base::InitLogging(argv, ::android::base::StderrLogger);
-
-    std::string root_dir = "/data/local/unencrypted";
-    if (access(root_dir.c_str(), F_OK)) {
-        root_dir = "/data";
-    }
-
-    std::string tempdir = root_dir + "/XXXXXX"s;
-    if (!mkdtemp(tempdir.data())) {
-        cerr << "unable to create tempdir on " << root_dir << "\n";
-        exit(EXIT_FAILURE);
-    }
-    if (!android::base::Realpath(tempdir, &gTestDir)) {
-        cerr << "unable to find realpath for " << tempdir;
-        exit(EXIT_FAILURE);
-    }
-
-    if (argc > 2) {
-        testfile_size = strtoull(argv[2], NULL, 0);
-        if (testfile_size == ULLONG_MAX) {
-            testfile_size = 512 * 1024 * 1024;
-        }
-    }
-
-    if (!DetermineBlockSize()) {
-        exit(EXIT_FAILURE);
-    }
-
-    auto result = RUN_ALL_TESTS();
-
-    std::string cmd = "rm -rf " + gTestDir;
-    system(cmd.c_str());
-
-    return result;
-}
diff --git a/fs_mgr/libfiemap_writer/include/libfiemap_writer/fiemap_writer.h b/fs_mgr/libfiemap_writer/include/libfiemap_writer/fiemap_writer.h
deleted file mode 100644
index 9486122..0000000
--- a/fs_mgr/libfiemap_writer/include/libfiemap_writer/fiemap_writer.h
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <linux/fiemap.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <functional>
-#include <string>
-#include <vector>
-
-#include <android-base/unique_fd.h>
-
-namespace android {
-namespace fiemap_writer {
-
-class FiemapWriter;
-using FiemapUniquePtr = std::unique_ptr<FiemapWriter>;
-
-class FiemapWriter final {
-  public:
-    // Factory method for FiemapWriter.
-    // The method returns FiemapUniquePtr that contains all the data necessary to be able to write
-    // to the given file directly using raw block i/o. The optional progress callback will be
-    // invoked, if create is true, while the file is being initialized. It receives the bytes
-    // written and the number of total bytes. If the callback returns false, the operation will
-    // fail.
-    //
-    // Note: when create is true, the file size will be aligned up to the nearest file system
-    // block.
-    static FiemapUniquePtr Open(const std::string& file_path, uint64_t file_size,
-                                bool create = true,
-                                std::function<bool(uint64_t, uint64_t)> progress = {});
-
-    // Check that a file still has the same extents since it was last opened with FiemapWriter,
-    // assuming the file was not resized outside of FiemapWriter. Returns false either on error
-    // or if the file was not pinned.
-    //
-    // This will always return true on Ext4. On F2FS, it will return true if either of the
-    // following cases are true:
-    //   - The file was never pinned.
-    //   - The file is pinned and has not been moved by the GC.
-    // Thus, this method should only be called for pinned files (such as those returned by
-    // FiemapWriter::Open).
-    static bool HasPinnedExtents(const std::string& file_path);
-
-    // Returns the underlying block device of a file. This will look past device-mapper layers.
-    // If an intermediate device-mapper layer would not maintain a 1:1 mapping (i.e. is a non-
-    // trivial dm-linear), then this will fail. If device-mapper nodes are encountered, then
-    // |uses_dm| will be set to true.
-    static bool GetBlockDeviceForFile(const std::string& file_path, std::string* bdev_path,
-                                      bool* uses_dm = nullptr);
-
-    ~FiemapWriter() = default;
-
-    const std::string& file_path() const { return file_path_; };
-    uint64_t size() const { return file_size_; };
-    const std::string& bdev_path() const { return bdev_path_; };
-    uint64_t block_size() const { return block_size_; };
-    const std::vector<struct fiemap_extent>& extents() { return extents_; };
-    uint32_t fs_type() const { return fs_type_; }
-
-    // Non-copyable & Non-movable
-    FiemapWriter(const FiemapWriter&) = delete;
-    FiemapWriter& operator=(const FiemapWriter&) = delete;
-    FiemapWriter& operator=(FiemapWriter&&) = delete;
-    FiemapWriter(FiemapWriter&&) = delete;
-
-  private:
-    // Name of the file managed by this class.
-    std::string file_path_;
-    // Block device on which we have created the file.
-    std::string bdev_path_;
-
-    // Size in bytes of the file this class is writing
-    uint64_t file_size_;
-
-    // total size in bytes of the block device
-    uint64_t bdev_size_;
-
-    // Filesystem type where the file is being created.
-    // See: <uapi/linux/magic.h> for filesystem magic numbers
-    uint32_t fs_type_;
-
-    // block size as reported by the kernel of the underlying block device;
-    uint64_t block_size_;
-
-    // This file's fiemap
-    std::vector<struct fiemap_extent> extents_;
-
-    FiemapWriter() = default;
-};
-
-}  // namespace fiemap_writer
-}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/include/libfiemap_writer/split_fiemap_writer.h b/fs_mgr/libfiemap_writer/include/libfiemap_writer/split_fiemap_writer.h
deleted file mode 100644
index 7b977e1..0000000
--- a/fs_mgr/libfiemap_writer/include/libfiemap_writer/split_fiemap_writer.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <stdint.h>
-
-#include <functional>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <android-base/unique_fd.h>
-
-#include "fiemap_writer.h"
-
-namespace android {
-namespace fiemap_writer {
-
-// Wrapper around FiemapWriter that is able to split images across files if
-// necessary.
-class SplitFiemap final {
-  public:
-    using ProgressCallback = std::function<bool(uint64_t, uint64_t)>;
-
-    // Create a new split fiemap file. If |max_piece_size| is 0, the number of
-    // pieces will be determined automatically by detecting the filesystem.
-    // Otherwise, the file will be split evenly (with the remainder in the
-    // final file).
-    static std::unique_ptr<SplitFiemap> Create(const std::string& file_path, uint64_t file_size,
-                                               uint64_t max_piece_size,
-                                               ProgressCallback progress = {});
-
-    // Open an existing split fiemap file.
-    static std::unique_ptr<SplitFiemap> Open(const std::string& file_path);
-
-    ~SplitFiemap();
-
-    // Return a list of all files created for a split file.
-    static bool GetSplitFileList(const std::string& file_path, std::vector<std::string>* list);
-
-    // Destroy all components of a split file. If the root file does not exist,
-    // this returns true and does not report an error.
-    static bool RemoveSplitFiles(const std::string& file_path, std::string* message = nullptr);
-
-    // Return whether all components of a split file still have pinned extents.
-    bool HasPinnedExtents() const;
-
-    // Helper method for writing data that spans files. Note there is no seek
-    // method (yet); this starts at 0 and increments the position by |bytes|.
-    bool Write(const void* data, uint64_t bytes);
-
-    // Flush all writes to all split files.
-    bool Flush();
-
-    const std::vector<struct fiemap_extent>& extents();
-    uint32_t block_size() const;
-    uint64_t size() const { return total_size_; }
-    const std::string& bdev_path() const;
-
-    // Non-copyable & Non-movable
-    SplitFiemap(const SplitFiemap&) = delete;
-    SplitFiemap& operator=(const SplitFiemap&) = delete;
-    SplitFiemap& operator=(SplitFiemap&&) = delete;
-    SplitFiemap(SplitFiemap&&) = delete;
-
-  private:
-    SplitFiemap() = default;
-    void AddFile(FiemapUniquePtr&& file);
-
-    bool creating_ = false;
-    std::string list_file_;
-    std::vector<FiemapUniquePtr> files_;
-    std::vector<struct fiemap_extent> extents_;
-    uint64_t total_size_ = 0;
-
-    // Most recently open file and position for Write().
-    size_t cursor_index_ = 0;
-    uint64_t cursor_file_pos_ = 0;
-    android::base::unique_fd cursor_fd_;
-};
-
-}  // namespace fiemap_writer
-}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/split_fiemap_writer.cpp b/fs_mgr/libfiemap_writer/split_fiemap_writer.cpp
deleted file mode 100644
index a0ccc10..0000000
--- a/fs_mgr/libfiemap_writer/split_fiemap_writer.cpp
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <libfiemap_writer/split_fiemap_writer.h>
-
-#include <fcntl.h>
-#include <stdint.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-
-#include "utility.h"
-
-namespace android {
-namespace fiemap_writer {
-
-using android::base::unique_fd;
-
-// We use a four-digit suffix at the end of filenames.
-static const size_t kMaxFilePieces = 500;
-
-std::unique_ptr<SplitFiemap> SplitFiemap::Create(const std::string& file_path, uint64_t file_size,
-                                                 uint64_t max_piece_size,
-                                                 ProgressCallback progress) {
-    if (!file_size) {
-        LOG(ERROR) << "Cannot create a fiemap for a 0-length file: " << file_path;
-        return nullptr;
-    }
-
-    if (!max_piece_size) {
-        max_piece_size = DetermineMaximumFileSize(file_path);
-        if (!max_piece_size) {
-            LOG(ERROR) << "Could not determine maximum file size for " << file_path;
-            return nullptr;
-        }
-    }
-
-    // Call |progress| only when the total percentage would significantly change.
-    int permille = -1;
-    uint64_t total_bytes_written = 0;
-    auto on_progress = [&](uint64_t written, uint64_t) -> bool {
-        uint64_t actual_written = total_bytes_written + written;
-        int new_permille = (actual_written * 1000) / file_size;
-        if (new_permille != permille && actual_written < file_size) {
-            if (progress && !progress(actual_written, file_size)) {
-                return false;
-            }
-            permille = new_permille;
-        }
-        return true;
-    };
-
-    std::unique_ptr<SplitFiemap> out(new SplitFiemap());
-    out->creating_ = true;
-    out->list_file_ = file_path;
-
-    // Create the split files.
-    uint64_t remaining_bytes = file_size;
-    while (remaining_bytes) {
-        if (out->files_.size() >= kMaxFilePieces) {
-            LOG(ERROR) << "Requested size " << file_size << " created too many split files";
-            return nullptr;
-        }
-        std::string chunk_path =
-                android::base::StringPrintf("%s.%04d", file_path.c_str(), (int)out->files_.size());
-        uint64_t chunk_size = std::min(max_piece_size, remaining_bytes);
-        auto writer = FiemapWriter::Open(chunk_path, chunk_size, true, on_progress);
-        if (!writer) {
-            return nullptr;
-        }
-
-        // To make sure the alignment doesn't create too much inconsistency, we
-        // account the *actual* size, not the requested size.
-        total_bytes_written += writer->size();
-        remaining_bytes -= writer->size();
-
-        out->AddFile(std::move(writer));
-    }
-
-    // Create the split file list.
-    unique_fd fd(open(out->list_file_.c_str(), O_CREAT | O_WRONLY | O_CLOEXEC, 0660));
-    if (fd < 0) {
-        PLOG(ERROR) << "Failed to open " << file_path;
-        return nullptr;
-    }
-
-    for (const auto& writer : out->files_) {
-        std::string line = android::base::Basename(writer->file_path()) + "\n";
-        if (!android::base::WriteFully(fd, line.data(), line.size())) {
-            PLOG(ERROR) << "Write failed " << file_path;
-            return nullptr;
-        }
-    }
-
-    // Unset this bit, so we don't unlink on destruction.
-    out->creating_ = false;
-    return out;
-}
-
-std::unique_ptr<SplitFiemap> SplitFiemap::Open(const std::string& file_path) {
-    std::vector<std::string> files;
-    if (!GetSplitFileList(file_path, &files)) {
-        return nullptr;
-    }
-
-    std::unique_ptr<SplitFiemap> out(new SplitFiemap());
-    out->list_file_ = file_path;
-
-    for (const auto& file : files) {
-        auto writer = FiemapWriter::Open(file, 0, false);
-        if (!writer) {
-            // Error was logged in Open().
-            return nullptr;
-        }
-        out->AddFile(std::move(writer));
-    }
-    return out;
-}
-
-bool SplitFiemap::GetSplitFileList(const std::string& file_path, std::vector<std::string>* list) {
-    // This is not the most efficient thing, but it is simple and recovering
-    // the fiemap/fibmap is much more expensive.
-    std::string contents;
-    if (!android::base::ReadFileToString(file_path, &contents, true)) {
-        PLOG(ERROR) << "Error reading file: " << file_path;
-        return false;
-    }
-
-    std::vector<std::string> names = android::base::Split(contents, "\n");
-    std::string dir = android::base::Dirname(file_path);
-    for (const auto& name : names) {
-        if (!name.empty()) {
-            list->emplace_back(dir + "/" + name);
-        }
-    }
-    return true;
-}
-
-bool SplitFiemap::RemoveSplitFiles(const std::string& file_path, std::string* message) {
-    // Early exit if this does not exist, and do not report an error.
-    if (access(file_path.c_str(), F_OK) && errno == ENOENT) {
-        return true;
-    }
-
-    bool ok = true;
-    std::vector<std::string> files;
-    if (GetSplitFileList(file_path, &files)) {
-        for (const auto& file : files) {
-            ok &= android::base::RemoveFileIfExists(file, message);
-        }
-    }
-    ok &= android::base::RemoveFileIfExists(file_path, message);
-    return ok;
-}
-
-bool SplitFiemap::HasPinnedExtents() const {
-    for (const auto& file : files_) {
-        if (!FiemapWriter::HasPinnedExtents(file->file_path())) {
-            return false;
-        }
-    }
-    return true;
-}
-
-const std::vector<struct fiemap_extent>& SplitFiemap::extents() {
-    if (extents_.empty()) {
-        for (const auto& file : files_) {
-            const auto& extents = file->extents();
-            extents_.insert(extents_.end(), extents.begin(), extents.end());
-        }
-    }
-    return extents_;
-}
-
-bool SplitFiemap::Write(const void* data, uint64_t bytes) {
-    // Open the current file.
-    FiemapWriter* file = files_[cursor_index_].get();
-
-    const uint8_t* data_ptr = reinterpret_cast<const uint8_t*>(data);
-    uint64_t bytes_remaining = bytes;
-    while (bytes_remaining) {
-        // How many bytes can we write into the current file?
-        uint64_t file_bytes_left = file->size() - cursor_file_pos_;
-        if (!file_bytes_left) {
-            if (cursor_index_ == files_.size() - 1) {
-                LOG(ERROR) << "write past end of file requested";
-                return false;
-            }
-
-            // No space left in the current file, but we have more files to
-            // use, so prep the next one.
-            cursor_fd_ = {};
-            cursor_file_pos_ = 0;
-            file = files_[++cursor_index_].get();
-            file_bytes_left = file->size();
-        }
-
-        // Open the current file if it's not open.
-        if (cursor_fd_ < 0) {
-            cursor_fd_.reset(open(file->file_path().c_str(), O_CLOEXEC | O_WRONLY));
-            if (cursor_fd_ < 0) {
-                PLOG(ERROR) << "open failed: " << file->file_path();
-                return false;
-            }
-            CHECK(cursor_file_pos_ == 0);
-        }
-
-        if (!FiemapWriter::HasPinnedExtents(file->file_path())) {
-            LOG(ERROR) << "file is no longer pinned: " << file->file_path();
-            return false;
-        }
-
-        uint64_t bytes_to_write = std::min(file_bytes_left, bytes_remaining);
-        if (!android::base::WriteFully(cursor_fd_, data_ptr, bytes_to_write)) {
-            PLOG(ERROR) << "write failed: " << file->file_path();
-            return false;
-        }
-        data_ptr += bytes_to_write;
-        bytes_remaining -= bytes_to_write;
-        cursor_file_pos_ += bytes_to_write;
-    }
-
-    // If we've reached the end of the current file, close it for sanity.
-    if (cursor_file_pos_ == file->size()) {
-        cursor_fd_ = {};
-    }
-    return true;
-}
-
-bool SplitFiemap::Flush() {
-    for (const auto& file : files_) {
-        unique_fd fd(open(file->file_path().c_str(), O_RDONLY | O_CLOEXEC));
-        if (fd < 0) {
-            PLOG(ERROR) << "open failed: " << file->file_path();
-            return false;
-        }
-        if (fsync(fd)) {
-            PLOG(ERROR) << "fsync failed: " << file->file_path();
-            return false;
-        }
-    }
-    return true;
-}
-
-SplitFiemap::~SplitFiemap() {
-    if (!creating_) {
-        return;
-    }
-
-    // We failed to finish creating, so unlink everything.
-    unlink(list_file_.c_str());
-    for (auto&& file : files_) {
-        std::string path = file->file_path();
-        file = nullptr;
-
-        unlink(path.c_str());
-    }
-}
-
-void SplitFiemap::AddFile(FiemapUniquePtr&& file) {
-    total_size_ += file->size();
-    files_.emplace_back(std::move(file));
-}
-
-uint32_t SplitFiemap::block_size() const {
-    return files_[0]->block_size();
-}
-
-const std::string& SplitFiemap::bdev_path() const {
-    return files_[0]->bdev_path();
-}
-
-}  // namespace fiemap_writer
-}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/utility.cpp b/fs_mgr/libfiemap_writer/utility.cpp
deleted file mode 100644
index 192ec16..0000000
--- a/fs_mgr/libfiemap_writer/utility.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "utility.h"
-
-#include <stdint.h>
-#include <sys/vfs.h>
-#include <unistd.h>
-
-#include <android-base/logging.h>
-#include <libfiemap_writer/fiemap_writer.h>
-
-namespace android {
-namespace fiemap_writer {
-
-uint64_t DetermineMaximumFileSize(const std::string& file_path) {
-    // Create the smallest file possible (one block).
-    auto writer = FiemapWriter::Open(file_path, 1);
-    if (!writer) {
-        return 0;
-    }
-
-    uint64_t result = 0;
-    switch (writer->fs_type()) {
-        case EXT4_SUPER_MAGIC:
-            // The minimum is 16GiB, so just report that. If we wanted we could parse the
-            // superblock and figure out if 64-bit support is enabled.
-            result = 17179869184ULL;
-            break;
-        case F2FS_SUPER_MAGIC:
-            // Formula is from https://www.kernel.org/doc/Documentation/filesystems/f2fs.txt
-            // 4KB * (923 + 2 * 1018 + 2 * 1018 * 1018 + 1018 * 1018 * 1018) := 3.94TB.
-            result = 4329690886144ULL;
-            break;
-        case MSDOS_SUPER_MAGIC:
-            // 4GB-1, which we want aligned to the block size.
-            result = 4294967295;
-            result -= (result % writer->block_size());
-            break;
-        default:
-            LOG(ERROR) << "Unknown file system type: " << writer->fs_type();
-            break;
-    }
-
-    // Close and delete the temporary file.
-    writer = nullptr;
-    unlink(file_path.c_str());
-
-    return result;
-}
-
-}  // namespace fiemap_writer
-}  // namespace android
diff --git a/fs_mgr/libfiemap_writer/utility.h b/fs_mgr/libfiemap_writer/utility.h
deleted file mode 100644
index 2d418da..0000000
--- a/fs_mgr/libfiemap_writer/utility.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <string>
-
-namespace android {
-namespace fiemap_writer {
-
-// Given a file that will be created, determine the maximum size its containing
-// filesystem allows. Note this is a theoretical maximum size; free space is
-// ignored entirely.
-uint64_t DetermineMaximumFileSize(const std::string& file_path);
-
-}  // namespace fiemap_writer
-}  // namespace android
diff --git a/fs_mgr/libfs_avb/Android.bp b/fs_mgr/libfs_avb/Android.bp
index a3c76ab..8fb9697 100644
--- a/fs_mgr/libfs_avb/Android.bp
+++ b/fs_mgr/libfs_avb/Android.bp
@@ -31,17 +31,16 @@
     static_libs: [
         "libavb",
         "libdm",
+        "libgsi",
         "libfstab",
     ],
     export_static_lib_headers: [
         "libfstab",
     ],
     shared_libs: [
+        "libbase",
         "libcrypto",
     ],
-    header_libs: [
-        "libbase_headers",
-    ],
     target: {
         darwin: {
             enabled: false,
@@ -61,6 +60,7 @@
         "libavb",
         "libavb_host_sysdeps",
         "libdm",
+        "libext2_uuid",
         "libfs_avb",
         "libfstab",
         "libgtest_host",
@@ -122,6 +122,7 @@
 cc_test {
     name: "libfs_avb_device_test",
     test_suites: ["device-tests"],
+    require_root: true,
     static_libs: [
         "libavb",
         "libdm",
diff --git a/fs_mgr/libfs_avb/avb_util.cpp b/fs_mgr/libfs_avb/avb_util.cpp
index d9650f3..2288674 100644
--- a/fs_mgr/libfs_avb/avb_util.cpp
+++ b/fs_mgr/libfs_avb/avb_util.cpp
@@ -104,32 +104,82 @@
     }
     table.set_readonly(true);
 
+    std::chrono::milliseconds timeout = {};
+    if (wait_for_verity_dev) timeout = 1s;
+
+    std::string dev_path;
     const std::string mount_point(Basename(fstab_entry->mount_point));
     const std::string device_name(GetVerityDeviceName(*fstab_entry));
     android::dm::DeviceMapper& dm = android::dm::DeviceMapper::Instance();
-    if (!dm.CreateDevice(device_name, table)) {
+    if (!dm.CreateDevice(device_name, table, &dev_path, timeout)) {
         LERROR << "Couldn't create verity device!";
         return false;
     }
 
-    std::string dev_path;
-    if (!dm.GetDmDevicePathByName(device_name, &dev_path)) {
-        LERROR << "Couldn't get verity device path!";
-        return false;
-    }
-
     // Marks the underlying block device as read-only.
     SetBlockDeviceReadOnly(fstab_entry->blk_device);
 
     // Updates fstab_rec->blk_device to verity device name.
     fstab_entry->blk_device = dev_path;
+    return true;
+}
 
-    // Makes sure we've set everything up properly.
-    if (wait_for_verity_dev && !WaitForFile(dev_path, 1s)) {
-        return false;
+std::unique_ptr<FsAvbHashDescriptor> GetHashDescriptor(
+        const std::string& partition_name, const std::vector<VBMetaData>& vbmeta_images) {
+    bool found = false;
+    const uint8_t* desc_partition_name;
+    auto hash_desc = std::make_unique<FsAvbHashDescriptor>();
+
+    for (const auto& vbmeta : vbmeta_images) {
+        size_t num_descriptors;
+        std::unique_ptr<const AvbDescriptor*[], decltype(&avb_free)> descriptors(
+                avb_descriptor_get_all(vbmeta.data(), vbmeta.size(), &num_descriptors), avb_free);
+
+        if (!descriptors || num_descriptors < 1) {
+            continue;
+        }
+
+        for (size_t n = 0; n < num_descriptors && !found; n++) {
+            AvbDescriptor desc;
+            if (!avb_descriptor_validate_and_byteswap(descriptors[n], &desc)) {
+                LWARNING << "Descriptor[" << n << "] is invalid";
+                continue;
+            }
+            if (desc.tag == AVB_DESCRIPTOR_TAG_HASH) {
+                desc_partition_name = (const uint8_t*)descriptors[n] + sizeof(AvbHashDescriptor);
+                if (!avb_hash_descriptor_validate_and_byteswap((AvbHashDescriptor*)descriptors[n],
+                                                               hash_desc.get())) {
+                    continue;
+                }
+                if (hash_desc->partition_name_len != partition_name.length()) {
+                    continue;
+                }
+                // Notes that desc_partition_name is not NUL-terminated.
+                std::string hash_partition_name((const char*)desc_partition_name,
+                                                hash_desc->partition_name_len);
+                if (hash_partition_name == partition_name) {
+                    found = true;
+                }
+            }
+        }
+
+        if (found) break;
     }
 
-    return true;
+    if (!found) {
+        LERROR << "Hash descriptor not found: " << partition_name;
+        return nullptr;
+    }
+
+    hash_desc->partition_name = partition_name;
+
+    const uint8_t* desc_salt = desc_partition_name + hash_desc->partition_name_len;
+    hash_desc->salt = BytesToHex(desc_salt, hash_desc->salt_len);
+
+    const uint8_t* desc_digest = desc_salt + hash_desc->salt_len;
+    hash_desc->digest = BytesToHex(desc_digest, hash_desc->digest_len);
+
+    return hash_desc;
 }
 
 std::unique_ptr<FsAvbHashtreeDescriptor> GetHashtreeDescriptor(
diff --git a/fs_mgr/libfs_avb/avb_util.h b/fs_mgr/libfs_avb/avb_util.h
index 09c786a..e8f7c39 100644
--- a/fs_mgr/libfs_avb/avb_util.h
+++ b/fs_mgr/libfs_avb/avb_util.h
@@ -40,6 +40,9 @@
 std::string GetAvbPropertyDescriptor(const std::string& key,
                                      const std::vector<VBMetaData>& vbmeta_images);
 
+std::unique_ptr<FsAvbHashDescriptor> GetHashDescriptor(
+        const std::string& partition_name, const std::vector<VBMetaData>& vbmeta_images);
+
 // AvbHashtreeDescriptor to dm-verity table setup.
 std::unique_ptr<FsAvbHashtreeDescriptor> GetHashtreeDescriptor(
         const std::string& partition_name, const std::vector<VBMetaData>& vbmeta_images);
diff --git a/fs_mgr/libfs_avb/fs_avb.cpp b/fs_mgr/libfs_avb/fs_avb.cpp
index c4d7511..5d504ab 100644
--- a/fs_mgr/libfs_avb/fs_avb.cpp
+++ b/fs_mgr/libfs_avb/fs_avb.cpp
@@ -22,6 +22,7 @@
 #include <sys/ioctl.h>
 #include <sys/types.h>
 
+#include <algorithm>
 #include <sstream>
 #include <string>
 #include <vector>
@@ -32,6 +33,7 @@
 #include <android-base/strings.h>
 #include <libavb/libavb.h>
 #include <libdm/dm.h>
+#include <libgsi/libgsi.h>
 
 #include "avb_ops.h"
 #include "avb_util.h"
@@ -265,14 +267,28 @@
     return avb_handle;
 }
 
-AvbUniquePtr AvbHandle::LoadAndVerifyVbmeta(const FstabEntry& fstab_entry) {
-    if (fstab_entry.avb_keys.empty()) {
+static bool IsAvbPermissive() {
+    if (IsDeviceUnlocked()) {
+        // Manually putting a file under metadata partition can enforce AVB verification.
+        if (!access(DSU_METADATA_PREFIX "avb_enforce", F_OK)) {
+            LINFO << "Enforcing AVB verification when the device is unlocked";
+            return false;
+        }
+        return true;
+    }
+    return false;
+}
+
+AvbUniquePtr AvbHandle::LoadAndVerifyVbmeta(const FstabEntry& fstab_entry,
+                                            const std::vector<std::string>& preload_avb_key_blobs) {
+    // At least one of the following should be provided for public key matching.
+    if (preload_avb_key_blobs.empty() && fstab_entry.avb_keys.empty()) {
         LERROR << "avb_keys=/path/to/key(s) is missing for " << fstab_entry.mount_point;
         return nullptr;
     }
 
     // Binds allow_verification_error and rollback_protection to device unlock state.
-    bool allow_verification_error = IsDeviceUnlocked();
+    bool allow_verification_error = IsAvbPermissive();
     bool rollback_protection = !allow_verification_error;
 
     std::string public_key_data;
@@ -308,7 +324,36 @@
             return nullptr;
     }
 
-    if (!ValidatePublicKeyBlob(public_key_data, Split(fstab_entry.avb_keys, ":"))) {
+    bool public_key_match = false;
+    // Performs key matching for preload_avb_key_blobs first, if it is present.
+    if (!public_key_data.empty() && !preload_avb_key_blobs.empty()) {
+        if (std::find(preload_avb_key_blobs.begin(), preload_avb_key_blobs.end(),
+                      public_key_data) != preload_avb_key_blobs.end()) {
+            public_key_match = true;
+        }
+    }
+    // Performs key matching for fstab_entry.avb_keys if necessary.
+    // Note that it is intentional to match both preload_avb_key_blobs and fstab_entry.avb_keys.
+    // Some keys might only be availble before init chroots into /system, e.g., /avb/key1
+    // in the first-stage ramdisk, while other keys might only be available after the chroot,
+    // e.g., /system/etc/avb/key2.
+    if (!public_key_data.empty() && !public_key_match) {
+        // fstab_entry.avb_keys might be either a directory containing multiple keys,
+        // or a string indicating multiple keys separated by ':'.
+        std::vector<std::string> allowed_avb_keys;
+        auto list_avb_keys_in_dir = ListFiles(fstab_entry.avb_keys);
+        if (list_avb_keys_in_dir.ok()) {
+            std::sort(list_avb_keys_in_dir->begin(), list_avb_keys_in_dir->end());
+            allowed_avb_keys = *list_avb_keys_in_dir;
+        } else {
+            allowed_avb_keys = Split(fstab_entry.avb_keys, ":");
+        }
+        if (ValidatePublicKeyBlob(public_key_data, allowed_avb_keys)) {
+            public_key_match = true;
+        }
+    }
+
+    if (!public_key_match) {
         avb_handle->status_ = AvbHandleStatus::kVerificationError;
         LWARNING << "Found unknown public key used to sign " << fstab_entry.mount_point;
         if (!allow_verification_error) {
@@ -332,15 +377,15 @@
     return LoadAndVerifyVbmeta("vbmeta", fs_mgr_get_slot_suffix(), fs_mgr_get_other_slot_suffix(),
                                {} /* expected_public_key, already checked by bootloader */,
                                HashAlgorithm::kSHA256,
-                               IsDeviceUnlocked(), /* allow_verification_error */
-                               true,               /* load_chained_vbmeta */
+                               IsAvbPermissive(), /* allow_verification_error */
+                               true,              /* load_chained_vbmeta */
                                false, /* rollback_protection, already checked by bootloader */
                                nullptr /* custom_device_path */);
 }
 
 // TODO(b/128807537): removes this function.
 AvbUniquePtr AvbHandle::Open() {
-    bool is_device_unlocked = IsDeviceUnlocked();
+    bool allow_verification_error = IsAvbPermissive();
 
     AvbUniquePtr avb_handle(new AvbHandle());
     if (!avb_handle) {
@@ -349,8 +394,9 @@
     }
 
     FsManagerAvbOps avb_ops;
-    AvbSlotVerifyFlags flags = is_device_unlocked ? AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR
-                                                  : AVB_SLOT_VERIFY_FLAGS_NONE;
+    AvbSlotVerifyFlags flags = allow_verification_error
+                                       ? AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR
+                                       : AVB_SLOT_VERIFY_FLAGS_NONE;
     AvbSlotVerifyResult verify_result =
             avb_ops.AvbSlotVerify(fs_mgr_get_slot_suffix(), flags, &avb_handle->vbmeta_images_);
 
@@ -373,9 +419,8 @@
             break;
         case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION:
         case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED:
-            if (!is_device_unlocked) {
-                LERROR << "ERROR_VERIFICATION / PUBLIC_KEY_REJECTED isn't allowed "
-                       << "if the device is LOCKED";
+            if (!allow_verification_error) {
+                LERROR << "ERROR_VERIFICATION / PUBLIC_KEY_REJECTED isn't allowed ";
                 return nullptr;
             }
             avb_handle->status_ = AvbHandleStatus::kVerificationError;
diff --git a/fs_mgr/libfs_avb/fs_avb_util.cpp b/fs_mgr/libfs_avb/fs_avb_util.cpp
index f82f83d..1c14cc0 100644
--- a/fs_mgr/libfs_avb/fs_avb_util.cpp
+++ b/fs_mgr/libfs_avb/fs_avb_util.cpp
@@ -74,5 +74,15 @@
     return GetHashtreeDescriptor(avb_partition_name, vbmeta_images);
 }
 
+// Given a path, loads and verifies the vbmeta, to extract the Avb Hash descriptor.
+std::unique_ptr<FsAvbHashDescriptor> GetHashDescriptor(const std::string& avb_partition_name,
+                                                       VBMetaData&& vbmeta) {
+    if (!vbmeta.size()) return nullptr;
+
+    std::vector<VBMetaData> vbmeta_images;
+    vbmeta_images.emplace_back(std::move(vbmeta));
+    return GetHashDescriptor(avb_partition_name, vbmeta_images);
+}
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/libfs_avb/include/fs_avb/fs_avb.h b/fs_mgr/libfs_avb/include/fs_avb/fs_avb.h
index 521f2d5..4702e68 100644
--- a/fs_mgr/libfs_avb/include/fs_avb/fs_avb.h
+++ b/fs_mgr/libfs_avb/include/fs_avb/fs_avb.h
@@ -85,8 +85,15 @@
     // TODO(bowgotsai): remove Open() and switch to LoadAndVerifyVbmeta().
     static AvbUniquePtr Open();                 // loads inline vbmeta, via libavb.
     static AvbUniquePtr LoadAndVerifyVbmeta();  // loads inline vbmeta.
-    static AvbUniquePtr LoadAndVerifyVbmeta(
-            const FstabEntry& fstab_entry);     // loads offline vbmeta.
+
+    // The caller can specify optional preload_avb_key_blobs for public key matching.
+    // This is mostly for init to preload AVB keys before chroot into /system.
+    // Both preload_avb_key_blobs and fstab_entry.avb_keys (file paths) will be used
+    // for public key matching.
+    static AvbUniquePtr LoadAndVerifyVbmeta(  // loads offline vbmeta.
+            const FstabEntry& fstab_entry,
+            const std::vector<std::string>& preload_avb_key_blobs = {});
+
     static AvbUniquePtr LoadAndVerifyVbmeta(    // loads offline vbmeta.
             const std::string& partition_name, const std::string& ab_suffix,
             const std::string& ab_other_suffix, const std::string& expected_public_key,
diff --git a/fs_mgr/libfs_avb/include/fs_avb/fs_avb_util.h b/fs_mgr/libfs_avb/include/fs_avb/fs_avb_util.h
index ec8badb..3f37bd7 100644
--- a/fs_mgr/libfs_avb/include/fs_avb/fs_avb_util.h
+++ b/fs_mgr/libfs_avb/include/fs_avb/fs_avb_util.h
@@ -32,9 +32,20 @@
                                                 std::string* out_avb_partition_name,
                                                 VBMetaVerifyResult* out_verify_result);
 
+// Loads the single vbmeta from a given path.
+std::unique_ptr<VBMetaData> LoadAndVerifyVbmetaByPath(
+        const std::string& image_path, const std::string& partition_name,
+        const std::string& expected_public_key_blob, bool allow_verification_error,
+        bool rollback_protection, bool is_chained_vbmeta, std::string* out_public_key_data,
+        bool* out_verification_disabled, VBMetaVerifyResult* out_verify_result);
+
 // Gets the hashtree descriptor for avb_partition_name from the vbmeta.
 std::unique_ptr<FsAvbHashtreeDescriptor> GetHashtreeDescriptor(
         const std::string& avb_partition_name, VBMetaData&& vbmeta);
 
+// Gets the hash descriptor for avb_partition_name from the vbmeta.
+std::unique_ptr<FsAvbHashDescriptor> GetHashDescriptor(const std::string& avb_partition_name,
+                                                       VBMetaData&& vbmeta);
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/libfs_avb/include/fs_avb/types.h b/fs_mgr/libfs_avb/include/fs_avb/types.h
index bd638e6..f2aa7cc 100644
--- a/fs_mgr/libfs_avb/include/fs_avb/types.h
+++ b/fs_mgr/libfs_avb/include/fs_avb/types.h
@@ -55,6 +55,12 @@
 
 std::ostream& operator<<(std::ostream& os, AvbHandleStatus status);
 
+struct FsAvbHashDescriptor : AvbHashDescriptor {
+    std::string partition_name;
+    std::string salt;
+    std::string digest;
+};
+
 struct FsAvbHashtreeDescriptor : AvbHashtreeDescriptor {
     std::string partition_name;
     std::string salt;
diff --git a/fs_mgr/libfs_avb/tests/avb_util_test.cpp b/fs_mgr/libfs_avb/tests/avb_util_test.cpp
index 0d342d3..784eb9c 100644
--- a/fs_mgr/libfs_avb/tests/avb_util_test.cpp
+++ b/fs_mgr/libfs_avb/tests/avb_util_test.cpp
@@ -101,10 +101,10 @@
 TEST_F(AvbUtilTest, DeriveAvbPartitionName) {
     // The fstab_entry to test.
     FstabEntry fstab_entry = {
-        .blk_device = "/dev/block/dm-1",  // a dm-linear device (logical)
-        .mount_point = "/system",
-        .fs_type = "ext4",
-        .logical_partition_name = "system",
+            .blk_device = "/dev/block/dm-1",  // a dm-linear device (logical)
+            .logical_partition_name = "system",
+            .mount_point = "/system",
+            .fs_type = "ext4",
     };
 
     // Logical partitions.
diff --git a/fs_mgr/libfs_avb/tests/util_test.cpp b/fs_mgr/libfs_avb/tests/util_test.cpp
index 12b5acb..5c388aa 100644
--- a/fs_mgr/libfs_avb/tests/util_test.cpp
+++ b/fs_mgr/libfs_avb/tests/util_test.cpp
@@ -16,10 +16,12 @@
 
 #include <unistd.h>
 
+#include <algorithm>
 #include <future>
 #include <string>
 #include <thread>
 
+#include <android-base/strings.h>
 #include <base/files/file_util.h>
 
 #include "fs_avb_test_util.h"
@@ -29,6 +31,7 @@
 using android::fs_mgr::BytesToHex;
 using android::fs_mgr::FileWaitMode;
 using android::fs_mgr::HexToBytes;
+using android::fs_mgr::ListFiles;
 using android::fs_mgr::NibbleValue;
 using android::fs_mgr::WaitForFile;
 
@@ -210,4 +213,99 @@
     ASSERT_TRUE(base::DeleteFile(wait_path, false /* resursive */));
 }
 
+TEST(BasicUtilTest, ListFiles) {
+    // Gets system tmp dir.
+    base::FilePath tmp_dir;
+    ASSERT_TRUE(GetTempDir(&tmp_dir));
+
+    // Creates a test dir for ListFiles testing.
+    base::FilePath test_dir;
+    ASSERT_TRUE(base::CreateTemporaryDirInDir(tmp_dir, "list-file-tests.", &test_dir));
+
+    // Generates dummy files to list.
+    base::FilePath file_path_1 = test_dir.Append("1.txt");
+    ASSERT_TRUE(base::WriteFile(file_path_1, "1", 1));
+    base::FilePath file_path_2 = test_dir.Append("2.txt");
+    ASSERT_TRUE(base::WriteFile(file_path_2, "22", 2));
+    base::FilePath file_path_3 = test_dir.Append("3.txt");
+    ASSERT_TRUE(base::WriteFile(file_path_3, "333", 3));
+
+    // List files for comparison.
+    auto result = ListFiles(test_dir.value());
+    ASSERT_RESULT_OK(result);
+    auto files = result.value();
+    EXPECT_EQ(3UL, files.size());
+    // Sort them offline for comparison.
+    std::sort(files.begin(), files.end());
+    EXPECT_EQ(file_path_1.value(), files[0]);
+    EXPECT_EQ(file_path_2.value(), files[1]);
+    EXPECT_EQ(file_path_3.value(), files[2]);
+
+    ASSERT_TRUE(base::DeleteFile(test_dir, true /* resursive */));
+}
+
+TEST(BasicUtilTest, ListFilesShouldDiscardSymlink) {
+    // Gets system tmp dir.
+    base::FilePath tmp_dir;
+    ASSERT_TRUE(GetTempDir(&tmp_dir));
+
+    // Creates a test dir for ListFiles testing.
+    base::FilePath test_dir;
+    ASSERT_TRUE(base::CreateTemporaryDirInDir(tmp_dir, "list-file-tests.", &test_dir));
+
+    // Generates dummy files to list.
+    base::FilePath file_path_1 = test_dir.Append("1.txt");
+    ASSERT_TRUE(base::WriteFile(file_path_1, "1", 1));
+    base::FilePath file_path_2 = test_dir.Append("2.txt");
+    ASSERT_TRUE(base::WriteFile(file_path_2, "22", 2));
+    // Creates a symlink and checks it won't be returned by ListFiles.
+    base::FilePath file_path_3 = test_dir.Append("3.txt");
+    base::FilePath non_existent_target = test_dir.Append("non_existent_target.txt");
+    ASSERT_TRUE(base::CreateSymbolicLink(non_existent_target, file_path_3));
+
+    // List files for comparison.
+    auto result = ListFiles(test_dir.value());
+    ASSERT_RESULT_OK(result);
+    auto files = result.value();
+    EXPECT_EQ(2UL, files.size());  // Should not include the symlink file.
+    // Sort them offline for comparison.
+    std::sort(files.begin(), files.end());
+    EXPECT_EQ(file_path_1.value(), files[0]);
+    EXPECT_EQ(file_path_2.value(), files[1]);
+
+    ASSERT_TRUE(base::DeleteFile(test_dir, true /* resursive */));
+}
+
+TEST(BasicUtilTest, ListFilesOpenDirFailure) {
+    // Gets system tmp dir.
+    base::FilePath tmp_dir;
+    ASSERT_TRUE(GetTempDir(&tmp_dir));
+
+    // Generates dummy files to list.
+    base::FilePath no_such_dir = tmp_dir.Append("not_such_dir");
+
+    auto fail = ListFiles(no_such_dir.value());
+    ASSERT_FALSE(fail.ok());
+    EXPECT_EQ(ENOENT, fail.error().code());
+    EXPECT_TRUE(android::base::StartsWith(fail.error().message(), "Failed to opendir: "));
+}
+
+TEST(BasicUtilTest, ListFilesEmptyDir) {
+    // Gets system tmp dir.
+    base::FilePath tmp_dir;
+    ASSERT_TRUE(GetTempDir(&tmp_dir));
+
+    // Creates a test dir for ListFiles testing.
+    base::FilePath test_dir;
+    ASSERT_TRUE(base::CreateTemporaryDirInDir(tmp_dir, "list-file-tests.", &test_dir));
+
+    // List files without sorting.
+    auto result = ListFiles(test_dir.value());
+    ASSERT_RESULT_OK(result);
+    auto files = result.value();
+    EXPECT_EQ(0UL, files.size());
+
+    ASSERT_TRUE(base::DeleteFile(test_dir, true /* resursive */));
+}
+
 }  // namespace fs_avb_host_test
diff --git a/fs_mgr/libfs_avb/util.cpp b/fs_mgr/libfs_avb/util.cpp
index d214b5b..7783d04 100644
--- a/fs_mgr/libfs_avb/util.cpp
+++ b/fs_mgr/libfs_avb/util.cpp
@@ -16,10 +16,13 @@
 
 #include "util.h"
 
+#include <dirent.h>
 #include <sys/ioctl.h>
+#include <sys/types.h>
 
 #include <thread>
 
+#include <android-base/stringprintf.h>
 #include <android-base/unique_fd.h>
 #include <linux/fs.h>
 
@@ -122,5 +125,23 @@
     return ioctl(fd, BLKROSET, &ON) == 0;
 }
 
+Result<std::vector<std::string>> ListFiles(const std::string& dir) {
+    struct dirent* de;
+    std::vector<std::string> files;
+
+    std::unique_ptr<DIR, int (*)(DIR*)> dirp(opendir(dir.c_str()), closedir);
+    if (!dirp) {
+        return ErrnoError() << "Failed to opendir: " << dir;
+    }
+
+    while ((de = readdir(dirp.get()))) {
+        if (de->d_type != DT_REG) continue;
+        std::string full_path = android::base::StringPrintf("%s/%s", dir.c_str(), de->d_name);
+        files.emplace_back(std::move(full_path));
+    }
+
+    return files;
+}
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/libfs_avb/util.h b/fs_mgr/libfs_avb/util.h
index 7763da5..427ab7c 100644
--- a/fs_mgr/libfs_avb/util.h
+++ b/fs_mgr/libfs_avb/util.h
@@ -18,6 +18,7 @@
 
 #include <chrono>
 #include <string>
+#include <vector>
 
 #ifdef HOST_TEST
 #include <base/logging.h>
@@ -25,6 +26,11 @@
 #include <android-base/logging.h>
 #endif
 
+#include <android-base/result.h>
+
+using android::base::ErrnoError;
+using android::base::Result;
+
 #define FS_AVB_TAG "[libfs_avb]"
 
 // Logs a message to kernel
@@ -60,5 +66,8 @@
 
 bool SetBlockDeviceReadOnly(const std::string& blockdev);
 
+// Returns a list of file under the dir, no order is guaranteed.
+Result<std::vector<std::string>> ListFiles(const std::string& dir);
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/liblp/Android.bp b/fs_mgr/liblp/Android.bp
index b504161..a779a78 100644
--- a/fs_mgr/liblp/Android.bp
+++ b/fs_mgr/liblp/Android.bp
@@ -17,7 +17,6 @@
 liblp_lib_deps = [
     "libbase",
     "liblog",
-    "libcrypto",
     "libcrypto_utils",
     "libsparse",
     "libext4_utils",
@@ -36,11 +35,14 @@
         "builder.cpp",
         "images.cpp",
         "partition_opener.cpp",
+        "property_fetcher.cpp",
         "reader.cpp",
         "utility.cpp",
         "writer.cpp",
     ],
-    shared_libs: liblp_lib_deps,
+    shared_libs: [
+        "libcrypto",
+    ] + liblp_lib_deps,
     target: {
         windows: {
             enabled: true,
@@ -54,29 +56,58 @@
     export_include_dirs: ["include"],
 }
 
-cc_test {
-    name: "liblp_test_static",
+filegroup {
+    name: "liblp_test_srcs",
+    srcs: [
+        "builder_test.cpp",
+        "device_test.cpp",
+        "io_test.cpp",
+        "test_partition_opener.cpp",
+        "utility_test.cpp",
+    ],
+}
+
+cc_defaults {
+    name: "liblp_test_defaults",
     defaults: ["fs_mgr_defaults"],
     cppflags: [
         "-Wno-unused-parameter",
     ],
     static_libs: [
+        "libcutils",
         "libgmock",
         "libfs_mgr",
         "liblp",
+        "libcrypto_static",
     ] + liblp_lib_deps,
-    stl: "libc++_static",
-    srcs: [
-        "builder_test.cpp",
-        "io_test.cpp",
-        "test_partition_opener.cpp",
-        "utility_test.cpp",
+    header_libs: [
+        "libstorage_literals_headers",
     ],
-    target: {
-        android: {
-            static_libs: [
-                "libcutils",
-            ],
-        },
-    },
+    stl: "libc++_static",
+    srcs: [":liblp_test_srcs"],
+}
+
+cc_test {
+    name: "liblp_test",
+    defaults: ["liblp_test_defaults"],
+    test_config: "liblp_test.xml",
+    test_suites: ["device-tests"],
+}
+
+cc_test {
+    name: "vts_core_liblp_test",
+    defaults: ["liblp_test_defaults"],
+    test_suites: ["vts"],
+    auto_gen_config: true,
+    test_min_api_level: 29,
+    require_root: true,
+}
+
+cc_test {
+    name: "vts_kernel_liblp_test",
+    defaults: ["liblp_test_defaults"],
+}
+
+vts_config {
+    name: "VtsKernelLiblpTest",
 }
diff --git a/fs_mgr/liblp/Android.mk b/fs_mgr/liblp/Android.mk
deleted file mode 100644
index 7f7f891..0000000
--- a/fs_mgr/liblp/Android.mk
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# Copyright (C) 2018 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := VtsKernelLiblpTest
--include test/vts/tools/build/Android.host_config.mk
diff --git a/fs_mgr/liblp/AndroidTest.xml b/fs_mgr/liblp/AndroidTest.xml
index fe1002c..2eb0ad1 100644
--- a/fs_mgr/liblp/AndroidTest.xml
+++ b/fs_mgr/liblp/AndroidTest.xml
@@ -21,8 +21,8 @@
     </target_preparer>
     <test class="com.android.tradefed.testtype.VtsMultiDeviceTest">
       <option name="test-module-name" value="VtsKernelLiblpTest"/>
-        <option name="binary-test-source" value="_32bit::DATA/nativetest/liblp_test_static/liblp_test_static" />
-        <option name="binary-test-source" value="_64bit::DATA/nativetest64/liblp_test_static/liblp_test_static" />
+        <option name="binary-test-source" value="_32bit::DATA/nativetest/vts_kernel_liblp_test/vts_kernel_liblp_test" />
+        <option name="binary-test-source" value="_64bit::DATA/nativetest64/vts_kernel_liblp_test/vts_kernel_liblp_test" />
         <option name="binary-test-type" value="gtest"/>
         <option name="test-timeout" value="1m"/>
         <option name="precondition-first-api-level" value="29" />
diff --git a/fs_mgr/liblp/TEST_MAPPING b/fs_mgr/liblp/TEST_MAPPING
new file mode 100644
index 0000000..04bcbda
--- /dev/null
+++ b/fs_mgr/liblp/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+      "name": "liblp_test"
+    }
+  ]
+}
diff --git a/fs_mgr/liblp/builder.cpp b/fs_mgr/liblp/builder.cpp
index 27222af..5554f77 100644
--- a/fs_mgr/liblp/builder.cpp
+++ b/fs_mgr/liblp/builder.cpp
@@ -20,21 +20,16 @@
 
 #include <algorithm>
 
-#include <android-base/properties.h>
 #include <android-base/unique_fd.h>
 
 #include "liblp/liblp.h"
+#include "liblp/property_fetcher.h"
 #include "reader.h"
 #include "utility.h"
 
 namespace android {
 namespace fs_mgr {
 
-bool MetadataBuilder::sABOverrideSet;
-bool MetadataBuilder::sABOverrideValue;
-
-static const std::string kDefaultGroup = "default";
-
 bool LinearExtent::AddTo(LpMetadata* out) const {
     if (device_index_ >= out->block_devices.size()) {
         LERROR << "Extent references unknown block device.";
@@ -45,12 +40,30 @@
     return true;
 }
 
+bool LinearExtent::OverlapsWith(const LinearExtent& other) const {
+    if (device_index_ != other.device_index()) {
+        return false;
+    }
+    return physical_sector() < other.end_sector() && other.physical_sector() < end_sector();
+}
+
+bool LinearExtent::OverlapsWith(const Interval& interval) const {
+    if (device_index_ != interval.device_index) {
+        return false;
+    }
+    return physical_sector() < interval.end && interval.start < end_sector();
+}
+
+Interval LinearExtent::AsInterval() const {
+    return Interval(device_index(), physical_sector(), end_sector());
+}
+
 bool ZeroExtent::AddTo(LpMetadata* out) const {
     out->extents.emplace_back(LpMetadataExtent{num_sectors_, LP_TARGET_TYPE_ZERO, 0, 0});
     return true;
 }
 
-Partition::Partition(const std::string& name, const std::string& group_name, uint32_t attributes)
+Partition::Partition(std::string_view name, std::string_view group_name, uint32_t attributes)
     : name_(name), group_name_(group_name), attributes_(attributes), size_(0) {}
 
 void Partition::AddExtent(std::unique_ptr<Extent>&& extent) {
@@ -101,6 +114,20 @@
     DCHECK(size_ == aligned_size);
 }
 
+Partition Partition::GetBeginningExtents(uint64_t aligned_size) const {
+    Partition p(name_, group_name_, attributes_);
+    for (const auto& extent : extents_) {
+        auto le = extent->AsLinearExtent();
+        if (le) {
+            p.AddExtent(std::make_unique<LinearExtent>(*le));
+        } else {
+            p.AddExtent(std::make_unique<ZeroExtent>(extent->num_sectors()));
+        }
+    }
+    p.ShrinkTo(aligned_size);
+    return p;
+}
+
 uint64_t Partition::BytesOnDisk() const {
     uint64_t sectors = 0;
     for (const auto& extent : extents_) {
@@ -145,7 +172,7 @@
     }
     if (opener) {
         for (size_t i = 0; i < builder->block_devices_.size(); i++) {
-            std::string partition_name = GetBlockDevicePartitionName(builder->block_devices_[i]);
+            std::string partition_name = builder->GetBlockDevicePartitionName(i);
             BlockDeviceInfo device_info;
             if (opener->GetInfo(partition_name, &device_info)) {
                 builder->UpdateBlockDeviceInfo(i, device_info);
@@ -158,21 +185,49 @@
 std::unique_ptr<MetadataBuilder> MetadataBuilder::NewForUpdate(const IPartitionOpener& opener,
                                                                const std::string& source_partition,
                                                                uint32_t source_slot_number,
-                                                               uint32_t target_slot_number) {
+                                                               uint32_t target_slot_number,
+                                                               bool always_keep_source_slot) {
     auto metadata = ReadMetadata(opener, source_partition, source_slot_number);
     if (!metadata) {
         return nullptr;
     }
 
-    // On non-retrofit devices there is only one location for metadata: the
-    // super partition. update_engine will remove and resize partitions as
-    // needed. On the other hand, for retrofit devices, we'll need to
-    // translate block device and group names to update their slot suffixes.
+    // On retrofit DAP devices, modify the metadata so that it is suitable for being written
+    // to the target slot later. We detect retrofit DAP devices by checking the super partition
+    // name and system properties.
+    // See comments for UpdateMetadataForOtherSuper.
     auto super_device = GetMetadataSuperBlockDevice(*metadata.get());
-    if (GetBlockDevicePartitionName(*super_device) == "super") {
-        return New(*metadata.get(), &opener);
+    if (android::fs_mgr::GetBlockDevicePartitionName(*super_device) != "super" &&
+        IsRetrofitDynamicPartitionsDevice()) {
+        if (!UpdateMetadataForOtherSuper(metadata.get(), source_slot_number, target_slot_number)) {
+            return nullptr;
+        }
     }
 
+    if (IPropertyFetcher::GetInstance()->GetBoolProperty("ro.virtual_ab.enabled", false)) {
+        if (always_keep_source_slot) {
+            // always_keep_source_slot implies the target build does not support snapshots.
+            // Clear unsupported attributes.
+            SetMetadataHeaderV0(metadata.get());
+        } else {
+            // !always_keep_source_slot implies the target build supports snapshots. Do snapshot
+            // updates.
+            if (!UpdateMetadataForInPlaceSnapshot(metadata.get(), source_slot_number,
+                                                  target_slot_number)) {
+                return nullptr;
+            }
+        }
+    }
+
+    return New(*metadata.get(), &opener);
+}
+
+// For retrofit DAP devices, there are (conceptually) two super partitions. We'll need to translate
+// block device and group names to update their slot suffixes.
+// (On the other hand, On non-retrofit DAP devices there is only one location for metadata: the
+// super partition. update_engine will remove and resize partitions as needed.)
+bool MetadataBuilder::UpdateMetadataForOtherSuper(LpMetadata* metadata, uint32_t source_slot_number,
+                                                  uint32_t target_slot_number) {
     // Clear partitions and extents, since they have no meaning on the target
     // slot. We also clear groups since they are re-added during OTA.
     metadata->partitions.clear();
@@ -185,14 +240,15 @@
     // Translate block devices.
     auto source_block_devices = std::move(metadata->block_devices);
     for (const auto& source_block_device : source_block_devices) {
-        std::string partition_name = GetBlockDevicePartitionName(source_block_device);
+        std::string partition_name =
+                android::fs_mgr::GetBlockDevicePartitionName(source_block_device);
         std::string slot_suffix = GetPartitionSlotSuffix(partition_name);
         if (slot_suffix.empty() || slot_suffix != source_slot_suffix) {
             // This should never happen. It means that the source metadata
             // refers to a target or unknown block device.
             LERROR << "Invalid block device for slot " << source_slot_suffix << ": "
                    << partition_name;
-            return nullptr;
+            return false;
         }
         std::string new_name =
                 partition_name.substr(0, partition_name.size() - slot_suffix.size()) +
@@ -201,20 +257,15 @@
         auto new_device = source_block_device;
         if (!UpdateBlockDevicePartitionName(&new_device, new_name)) {
             LERROR << "Partition name too long: " << new_name;
-            return nullptr;
+            return false;
         }
         metadata->block_devices.emplace_back(new_device);
     }
 
-    return New(*metadata.get(), &opener);
+    return true;
 }
 
-void MetadataBuilder::OverrideABForTesting(bool ab_device) {
-    sABOverrideSet = true;
-    sABOverrideValue = ab_device;
-}
-
-MetadataBuilder::MetadataBuilder() : auto_slot_suffixing_(false), ignore_slot_suffixing_(false) {
+MetadataBuilder::MetadataBuilder() : auto_slot_suffixing_(false) {
     memset(&geometry_, 0, sizeof(geometry_));
     geometry_.magic = LP_METADATA_GEOMETRY_MAGIC;
     geometry_.struct_size = sizeof(geometry_);
@@ -222,8 +273,8 @@
     memset(&header_, 0, sizeof(header_));
     header_.magic = LP_METADATA_HEADER_MAGIC;
     header_.major_version = LP_METADATA_MAJOR_VERSION;
-    header_.minor_version = LP_METADATA_MINOR_VERSION;
-    header_.header_size = sizeof(header_);
+    header_.minor_version = LP_METADATA_MINOR_VERSION_MIN;
+    header_.header_size = sizeof(LpMetadataHeaderV1_0);
     header_.partitions.entry_size = sizeof(LpMetadataPartition);
     header_.extents.entry_size = sizeof(LpMetadataExtent);
     header_.groups.entry_size = sizeof(LpMetadataPartitionGroup);
@@ -234,6 +285,12 @@
     geometry_ = metadata.geometry;
     block_devices_ = metadata.block_devices;
 
+    // Bump the version as necessary to copy any newer fields.
+    if (metadata.header.minor_version >= LP_METADATA_VERSION_FOR_EXPANDED_HEADER) {
+        RequireExpandedMetadataHeader();
+        header_.flags = metadata.header.flags;
+    }
+
     for (const auto& group : metadata.groups) {
         std::string group_name = GetPartitionGroupName(group);
         if (!AddGroup(group_name, group.maximum_size)) {
@@ -373,7 +430,7 @@
             block_devices_.emplace_back(out);
         }
     }
-    if (GetBlockDevicePartitionName(block_devices_[0]) != super_partition) {
+    if (GetBlockDevicePartitionName(0) != super_partition) {
         LERROR << "No super partition was specified.";
         return false;
     }
@@ -410,13 +467,13 @@
     geometry_.metadata_slot_count = metadata_slot_count;
     geometry_.logical_block_size = logical_block_size;
 
-    if (!AddGroup(kDefaultGroup, 0)) {
+    if (!AddGroup(std::string(kDefaultGroup), 0)) {
         return false;
     }
     return true;
 }
 
-bool MetadataBuilder::AddGroup(const std::string& group_name, uint64_t maximum_size) {
+bool MetadataBuilder::AddGroup(std::string_view group_name, uint64_t maximum_size) {
     if (FindGroup(group_name)) {
         LERROR << "Group already exists: " << group_name;
         return false;
@@ -429,7 +486,7 @@
     return AddPartition(name, kDefaultGroup, attributes);
 }
 
-Partition* MetadataBuilder::AddPartition(const std::string& name, const std::string& group_name,
+Partition* MetadataBuilder::AddPartition(std::string_view name, std::string_view group_name,
                                          uint32_t attributes) {
     if (name.empty()) {
         LERROR << "Partition must have a non-empty name.";
@@ -443,16 +500,11 @@
         LERROR << "Could not find partition group: " << group_name;
         return nullptr;
     }
-    if (IsABDevice() && !auto_slot_suffixing_ && name != "scratch" && !ignore_slot_suffixing_ &&
-        GetPartitionSlotSuffix(name).empty()) {
-        LERROR << "Unsuffixed partition not allowed on A/B device: " << name;
-        return nullptr;
-    }
     partitions_.push_back(std::make_unique<Partition>(name, group_name, attributes));
     return partitions_.back().get();
 }
 
-Partition* MetadataBuilder::FindPartition(const std::string& name) {
+Partition* MetadataBuilder::FindPartition(std::string_view name) {
     for (const auto& partition : partitions_) {
         if (partition->name() == name) {
             return partition.get();
@@ -461,7 +513,7 @@
     return nullptr;
 }
 
-PartitionGroup* MetadataBuilder::FindGroup(const std::string& group_name) {
+PartitionGroup* MetadataBuilder::FindGroup(std::string_view group_name) {
     for (const auto& group : groups_) {
         if (group->name() == group_name) {
             return group.get();
@@ -481,7 +533,7 @@
     return total;
 }
 
-void MetadataBuilder::RemovePartition(const std::string& name) {
+void MetadataBuilder::RemovePartition(std::string_view name) {
     for (auto iter = partitions_.begin(); iter != partitions_.end(); iter++) {
         if ((*iter)->name() == name) {
             partitions_.erase(iter);
@@ -574,18 +626,48 @@
     return true;
 }
 
-bool MetadataBuilder::GrowPartition(Partition* partition, uint64_t aligned_size) {
+Interval Interval::Intersect(const Interval& a, const Interval& b) {
+    Interval ret = a;
+    if (a.device_index != b.device_index) {
+        ret.start = ret.end = a.start;  // set length to 0 to indicate no intersection.
+        return ret;
+    }
+    ret.start = std::max(a.start, b.start);
+    ret.end = std::max(ret.start, std::min(a.end, b.end));
+    return ret;
+}
+
+std::vector<Interval> Interval::Intersect(const std::vector<Interval>& a,
+                                          const std::vector<Interval>& b) {
+    std::vector<Interval> ret;
+    for (const Interval& a_interval : a) {
+        for (const Interval& b_interval : b) {
+            auto intersect = Intersect(a_interval, b_interval);
+            if (intersect.length() > 0) ret.emplace_back(std::move(intersect));
+        }
+    }
+    return ret;
+}
+
+std::unique_ptr<Extent> Interval::AsExtent() const {
+    return std::make_unique<LinearExtent>(length(), device_index, start);
+}
+
+bool MetadataBuilder::GrowPartition(Partition* partition, uint64_t aligned_size,
+                                    const std::vector<Interval>& free_region_hint) {
     uint64_t space_needed = aligned_size - partition->size();
     uint64_t sectors_needed = space_needed / LP_SECTOR_SIZE;
     DCHECK(sectors_needed * LP_SECTOR_SIZE == space_needed);
 
     std::vector<Interval> free_regions = GetFreeRegions();
+    if (!free_region_hint.empty())
+        free_regions = Interval::Intersect(free_regions, free_region_hint);
 
     const uint64_t sectors_per_block = geometry_.logical_block_size / LP_SECTOR_SIZE;
     CHECK_NE(sectors_per_block, 0);
     CHECK(sectors_needed % sectors_per_block == 0);
 
-    if (IsABDevice() && !IsRetrofitDevice() && GetPartitionSlotSuffix(partition->name()) == "_b") {
+    if (IsABDevice() && ShouldHalveSuper() && GetPartitionSlotSuffix(partition->name()) == "_b") {
         // Allocate "a" partitions top-down and "b" partitions bottom-up, to
         // minimize fragmentation during OTA.
         free_regions = PrioritizeSecondHalfOfSuper(free_regions);
@@ -645,7 +727,7 @@
     return true;
 }
 
-std::vector<MetadataBuilder::Interval> MetadataBuilder::PrioritizeSecondHalfOfSuper(
+std::vector<Interval> MetadataBuilder::PrioritizeSecondHalfOfSuper(
         const std::vector<Interval>& free_list) {
     const auto& super = block_devices_[0];
     uint64_t first_sector = super.first_logical_sector;
@@ -713,8 +795,7 @@
 bool MetadataBuilder::IsAnyRegionCovered(const std::vector<Interval>& regions,
                                          const LinearExtent& candidate) const {
     for (const auto& region : regions) {
-        if (region.device_index == candidate.device_index() &&
-            (candidate.OwnsSector(region.start) || candidate.OwnsSector(region.end))) {
+        if (candidate.OverlapsWith(region)) {
             return true;
         }
     }
@@ -725,11 +806,10 @@
     for (const auto& partition : partitions_) {
         for (const auto& extent : partition->extents()) {
             LinearExtent* linear = extent->AsLinearExtent();
-            if (!linear || linear->device_index() != candidate.device_index()) {
+            if (!linear) {
                 continue;
             }
-            if (linear->OwnsSector(candidate.physical_sector()) ||
-                linear->OwnsSector(candidate.end_sector() - 1)) {
+            if (linear->OverlapsWith(candidate)) {
                 return true;
             }
         }
@@ -791,6 +871,11 @@
             return nullptr;
         }
 
+        if (partition->attributes() & LP_PARTITION_ATTRIBUTE_MASK_V1) {
+            static const uint16_t kMinVersion = LP_METADATA_VERSION_FOR_UPDATED_ATTR;
+            metadata->header.minor_version = std::max(metadata->header.minor_version, kMinVersion);
+        }
+
         strncpy(part.name, partition->name().c_str(), sizeof(part.name));
         part.first_extent_index = static_cast<uint32_t>(metadata->extents.size());
         part.num_extents = static_cast<uint32_t>(partition->extents().size());
@@ -823,6 +908,14 @@
     return metadata;
 }
 
+void MetadataBuilder::RequireExpandedMetadataHeader() {
+    if (header_.minor_version >= LP_METADATA_VERSION_FOR_EXPANDED_HEADER) {
+        return;
+    }
+    header_.minor_version = LP_METADATA_VERSION_FOR_EXPANDED_HEADER;
+    header_.header_size = sizeof(LpMetadataHeaderV1_2);
+}
+
 uint64_t MetadataBuilder::AllocatableSpace() const {
     uint64_t total_size = 0;
     for (const auto& block_device : block_devices_) {
@@ -851,7 +944,7 @@
 bool MetadataBuilder::FindBlockDeviceByName(const std::string& partition_name,
                                             uint32_t* index) const {
     for (size_t i = 0; i < block_devices_.size(); i++) {
-        if (GetBlockDevicePartitionName(block_devices_[i]) == partition_name) {
+        if (GetBlockDevicePartitionName(i) == partition_name) {
             *index = i;
             return true;
         }
@@ -916,7 +1009,8 @@
     return true;
 }
 
-bool MetadataBuilder::ResizePartition(Partition* partition, uint64_t requested_size) {
+bool MetadataBuilder::ResizePartition(Partition* partition, uint64_t requested_size,
+                                      const std::vector<Interval>& free_region_hint) {
     // Align the space needed up to the nearest sector.
     uint64_t aligned_size = AlignTo(requested_size, geometry_.logical_block_size);
     uint64_t old_size = partition->size();
@@ -926,7 +1020,7 @@
     }
 
     if (aligned_size > old_size) {
-        if (!GrowPartition(partition, aligned_size)) {
+        if (!GrowPartition(partition, aligned_size, free_region_hint)) {
             return false;
         }
     } else if (aligned_size < partition->size()) {
@@ -948,7 +1042,7 @@
     return names;
 }
 
-void MetadataBuilder::RemoveGroupAndPartitions(const std::string& group_name) {
+void MetadataBuilder::RemoveGroupAndPartitions(std::string_view group_name) {
     if (group_name == kDefaultGroup) {
         // Cannot remove the default group.
         return;
@@ -976,7 +1070,8 @@
     // Note: we don't compare alignment, since it's a performance thing and
     // won't affect whether old extents continue to work.
     return first.first_logical_sector == second.first_logical_sector && first.size == second.size &&
-           GetBlockDevicePartitionName(first) == GetBlockDevicePartitionName(second);
+           android::fs_mgr::GetBlockDevicePartitionName(first) ==
+                   android::fs_mgr::GetBlockDevicePartitionName(second);
 }
 
 bool MetadataBuilder::ImportPartitions(const LpMetadata& metadata,
@@ -1049,19 +1144,23 @@
     auto_slot_suffixing_ = true;
 }
 
-void MetadataBuilder::IgnoreSlotSuffixing() {
-    ignore_slot_suffixing_ = true;
+void MetadataBuilder::SetVirtualABDeviceFlag() {
+    RequireExpandedMetadataHeader();
+    header_.flags |= LP_HEADER_FLAG_VIRTUAL_AB_DEVICE;
 }
 
-bool MetadataBuilder::IsABDevice() const {
-    if (sABOverrideSet) {
-        return sABOverrideValue;
-    }
-    return android::base::GetBoolProperty("ro.build.ab_update", false);
+bool MetadataBuilder::IsABDevice() {
+    return !IPropertyFetcher::GetInstance()->GetProperty("ro.boot.slot_suffix", "").empty();
 }
 
-bool MetadataBuilder::IsRetrofitDevice() const {
-    return GetBlockDevicePartitionName(block_devices_[0]) != LP_METADATA_DEFAULT_PARTITION_NAME;
+bool MetadataBuilder::IsRetrofitDynamicPartitionsDevice() {
+    return IPropertyFetcher::GetInstance()->GetBoolProperty("ro.boot.dynamic_partitions_retrofit",
+                                                            false);
+}
+
+bool MetadataBuilder::ShouldHalveSuper() const {
+    return GetBlockDevicePartitionName(0) == LP_METADATA_DEFAULT_PARTITION_NAME &&
+           !IPropertyFetcher::GetInstance()->GetBoolProperty("ro.virtual_ab.enabled", false);
 }
 
 bool MetadataBuilder::AddLinearExtent(Partition* partition, const std::string& block_device,
@@ -1077,7 +1176,7 @@
     return true;
 }
 
-std::vector<Partition*> MetadataBuilder::ListPartitionsInGroup(const std::string& group_name) {
+std::vector<Partition*> MetadataBuilder::ListPartitionsInGroup(std::string_view group_name) {
     std::vector<Partition*> partitions;
     for (const auto& partition : partitions_) {
         if (partition->group_name() == group_name) {
@@ -1087,7 +1186,7 @@
     return partitions;
 }
 
-bool MetadataBuilder::ChangePartitionGroup(Partition* partition, const std::string& group_name) {
+bool MetadataBuilder::ChangePartitionGroup(Partition* partition, std::string_view group_name) {
     if (!FindGroup(group_name)) {
         LERROR << "Partition cannot change to unknown group: " << group_name;
         return false;
@@ -1125,5 +1224,15 @@
     return true;
 }
 
+std::string MetadataBuilder::GetBlockDevicePartitionName(uint64_t index) const {
+    return index < block_devices_.size()
+                   ? android::fs_mgr::GetBlockDevicePartitionName(block_devices_[index])
+                   : "";
+}
+
+uint64_t MetadataBuilder::logical_block_size() const {
+    return geometry_.logical_block_size;
+}
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/liblp/builder_test.cpp b/fs_mgr/liblp/builder_test.cpp
index 46bfe92..977ebe3 100644
--- a/fs_mgr/liblp/builder_test.cpp
+++ b/fs_mgr/liblp/builder_test.cpp
@@ -14,34 +14,35 @@
  * limitations under the License.
  */
 
-#include <fs_mgr.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <liblp/builder.h>
+#include <storage_literals/storage_literals.h>
 
+#include "liblp_test.h"
 #include "utility.h"
 
 using namespace std;
+using namespace android::storage_literals;
 using namespace android::fs_mgr;
+using namespace android::fs_mgr::testing;
+using ::testing::_;
+using ::testing::AnyNumber;
 using ::testing::ElementsAre;
+using ::testing::NiceMock;
+using ::testing::Return;
 
 class Environment : public ::testing::Environment {
   public:
-    void SetUp() override { MetadataBuilder::OverrideABForTesting(false); }
+    void SetUp() override { ResetMockPropertyFetcher(); }
 };
 
 int main(int argc, char** argv) {
-    std::unique_ptr<Environment> env(new Environment);
-    ::testing::AddGlobalTestEnvironment(env.get());
     ::testing::InitGoogleTest(&argc, argv);
     return RUN_ALL_TESTS();
 }
 
-class BuilderTest : public ::testing::Test {
-  public:
-    void SetUp() override { MetadataBuilder::OverrideABForTesting(false); }
-    void TearDown() override { MetadataBuilder::OverrideABForTesting(false); }
-};
+class BuilderTest : public LiblpTest {};
 
 TEST_F(BuilderTest, BuildBasic) {
     unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(1024 * 1024, 1024, 2);
@@ -106,6 +107,13 @@
     EXPECT_EQ(extent->num_sectors(), 32768 / LP_SECTOR_SIZE);
     EXPECT_EQ(extent->physical_sector(), 32);
 
+    auto exported = builder->Export();
+    ASSERT_NE(exported, nullptr);
+    ASSERT_EQ(FindPartition(*exported.get(), "not found"), nullptr);
+    auto entry = FindPartition(*exported.get(), "system");
+    ASSERT_NE(entry, nullptr);
+    ASSERT_EQ(GetPartitionSize(*exported.get(), *entry), 32768);
+
     // Test shrinking to 0.
     builder->ResizePartition(system, 0);
     EXPECT_EQ(system->size(), 0);
@@ -343,7 +351,8 @@
     const LpMetadataHeader& header = exported->header;
     EXPECT_EQ(header.magic, LP_METADATA_HEADER_MAGIC);
     EXPECT_EQ(header.major_version, LP_METADATA_MAJOR_VERSION);
-    EXPECT_EQ(header.minor_version, LP_METADATA_MINOR_VERSION);
+    EXPECT_EQ(header.minor_version, LP_METADATA_MINOR_VERSION_MIN);
+    EXPECT_EQ(header.header_size, sizeof(LpMetadataHeaderV1_0));
 
     ASSERT_EQ(exported->partitions.size(), 2);
     ASSERT_EQ(exported->extents.size(), 3);
@@ -441,23 +450,6 @@
     EXPECT_EQ(builder, nullptr);
 }
 
-TEST_F(BuilderTest, block_device_info) {
-    PartitionOpener opener;
-
-    BlockDeviceInfo device_info;
-    ASSERT_TRUE(opener.GetInfo(fs_mgr_get_super_partition_name(), &device_info));
-
-    // Sanity check that the device doesn't give us some weird inefficient
-    // alignment.
-    ASSERT_EQ(device_info.alignment % LP_SECTOR_SIZE, 0);
-    ASSERT_EQ(device_info.alignment_offset % LP_SECTOR_SIZE, 0);
-    ASSERT_LE(device_info.alignment_offset, INT_MAX);
-    ASSERT_EQ(device_info.logical_block_size % LP_SECTOR_SIZE, 0);
-
-    // Having an alignment offset > alignment doesn't really make sense.
-    ASSERT_LT(device_info.alignment_offset, device_info.alignment);
-}
-
 TEST_F(BuilderTest, UpdateBlockDeviceInfo) {
     BlockDeviceInfo device_info("super", 1024 * 1024, 4096, 1024, 4096);
     unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(device_info, 1024, 1);
@@ -602,13 +594,6 @@
     ASSERT_NE(builder->Export(), nullptr);
 }
 
-constexpr unsigned long long operator"" _GiB(unsigned long long x) {  // NOLINT
-    return x << 30;
-}
-constexpr unsigned long long operator"" _MiB(unsigned long long x) {  // NOLINT
-    return x << 20;
-}
-
 TEST_F(BuilderTest, RemoveAndAddFirstPartition) {
     auto builder = MetadataBuilder::New(10_GiB, 65536, 2);
     ASSERT_NE(nullptr, builder);
@@ -765,21 +750,14 @@
     EXPECT_FALSE(builder->ImportPartitions(*exported.get(), {"system"}));
 }
 
-TEST_F(BuilderTest, UnsuffixedPartitions) {
-    MetadataBuilder::OverrideABForTesting(true);
-    unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(1024 * 1024, 1024, 2);
-    ASSERT_NE(builder, nullptr);
-
-    ASSERT_EQ(builder->AddPartition("system", 0), nullptr);
-    ASSERT_NE(builder->AddPartition("system_a", 0), nullptr);
-}
-
 TEST_F(BuilderTest, ABExtents) {
     BlockDeviceInfo device_info("super", 10_GiB, 768 * 1024, 0, 4096);
 
     // A and B slots should be allocated from separate halves of the partition,
     // to mitigate allocating too many extents. (b/120433288)
-    MetadataBuilder::OverrideABForTesting(true);
+    ON_CALL(*GetMockedPropertyFetcher(), GetProperty("ro.boot.slot_suffix", _))
+            .WillByDefault(Return("_a"));
+
     auto builder = MetadataBuilder::New(device_info, 65536, 2);
     ASSERT_NE(builder, nullptr);
     Partition* system_a = builder->AddPartition("system_a", 0);
@@ -905,3 +883,139 @@
     std::set<std::string> partitions_to_keep{"system_a", "vendor_a", "product_a"};
     ASSERT_TRUE(builder->ImportPartitions(*on_disk.get(), partitions_to_keep));
 }
+
+// Interval has operator< defined; it is not appropriate to re-define Interval::operator== that
+// compares device index.
+namespace android {
+namespace fs_mgr {
+bool operator==(const Interval& a, const Interval& b) {
+    return a.device_index == b.device_index && a.start == b.start && a.end == b.end;
+}
+}  // namespace fs_mgr
+}  // namespace android
+
+TEST_F(BuilderTest, Interval) {
+    EXPECT_EQ(0u, Interval::Intersect(Interval(0, 100, 200), Interval(0, 50, 100)).length());
+    EXPECT_EQ(Interval(0, 100, 150),
+              Interval::Intersect(Interval(0, 100, 200), Interval(0, 50, 150)));
+    EXPECT_EQ(Interval(0, 100, 200),
+              Interval::Intersect(Interval(0, 100, 200), Interval(0, 50, 200)));
+    EXPECT_EQ(Interval(0, 100, 200),
+              Interval::Intersect(Interval(0, 100, 200), Interval(0, 50, 250)));
+    EXPECT_EQ(Interval(0, 100, 200),
+              Interval::Intersect(Interval(0, 100, 200), Interval(0, 100, 200)));
+    EXPECT_EQ(Interval(0, 150, 200),
+              Interval::Intersect(Interval(0, 100, 200), Interval(0, 150, 250)));
+    EXPECT_EQ(0u, Interval::Intersect(Interval(0, 100, 200), Interval(0, 200, 250)).length());
+
+    auto v = Interval::Intersect(std::vector<Interval>{Interval(0, 0, 50), Interval(0, 100, 150)},
+                                 std::vector<Interval>{Interval(0, 25, 125)});
+    ASSERT_EQ(2, v.size());
+    EXPECT_EQ(Interval(0, 25, 50), v[0]);
+    EXPECT_EQ(Interval(0, 100, 125), v[1]);
+
+    EXPECT_EQ(0u, Interval::Intersect(std::vector<Interval>{Interval(0, 0, 50)},
+                                      std::vector<Interval>{Interval(0, 100, 150)})
+                          .size());
+}
+
+TEST_F(BuilderTest, ExpandedHeader) {
+    unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(1024 * 1024, 1024, 2);
+    ASSERT_NE(builder, nullptr);
+
+    builder->RequireExpandedMetadataHeader();
+
+    unique_ptr<LpMetadata> exported = builder->Export();
+    ASSERT_NE(exported, nullptr);
+    EXPECT_EQ(exported->header.header_size, sizeof(LpMetadataHeaderV1_2));
+
+    exported->header.flags = 0x5e5e5e5e;
+
+    builder = MetadataBuilder::New(*exported.get());
+    exported = builder->Export();
+    ASSERT_NE(exported, nullptr);
+    EXPECT_EQ(exported->header.header_size, sizeof(LpMetadataHeaderV1_2));
+    EXPECT_EQ(exported->header.flags, 0x5e5e5e5e);
+}
+
+static Interval ToInterval(const std::unique_ptr<Extent>& extent) {
+    if (LinearExtent* le = extent->AsLinearExtent()) {
+        return le->AsInterval();
+    }
+    return {0, 0, 0};
+}
+
+static void AddPartition(const std::unique_ptr<MetadataBuilder>& builder,
+                         const std::string& partition_name, uint64_t num_sectors,
+                         uint64_t start_sector, std::vector<Interval>* intervals) {
+    Partition* p = builder->AddPartition(partition_name, "group", 0);
+    ASSERT_NE(p, nullptr);
+    ASSERT_TRUE(builder->AddLinearExtent(p, "super", num_sectors, start_sector));
+    ASSERT_EQ(p->extents().size(), 1);
+
+    if (!intervals) {
+        return;
+    }
+
+    auto new_interval = ToInterval(p->extents().back());
+    std::vector<Interval> new_intervals = {new_interval};
+
+    auto overlap = Interval::Intersect(*intervals, new_intervals);
+    ASSERT_TRUE(overlap.empty());
+
+    intervals->push_back(new_interval);
+}
+
+TEST_F(BuilderTest, CollidedExtents) {
+    BlockDeviceInfo super("super", 8_GiB, 786432, 229376, 4096);
+    std::vector<BlockDeviceInfo> block_devices = {super};
+
+    unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(block_devices, "super", 65536, 2);
+    ASSERT_NE(builder, nullptr);
+
+    ASSERT_TRUE(builder->AddGroup("group", 0));
+
+    std::vector<Interval> old_intervals;
+    AddPartition(builder, "system", 10229008, 2048, &old_intervals);
+    AddPartition(builder, "test_a", 648, 12709888, &old_intervals);
+    AddPartition(builder, "test_b", 625184, 12711936, &old_intervals);
+    AddPartition(builder, "test_c", 130912, 13338624, &old_intervals);
+    AddPartition(builder, "test_d", 888, 13469696, &old_intervals);
+    AddPartition(builder, "test_e", 888, 13471744, &old_intervals);
+    AddPartition(builder, "test_f", 888, 13475840, &old_intervals);
+    AddPartition(builder, "test_g", 888, 13477888, &old_intervals);
+
+    // Don't track the first vendor interval, since it will get extended.
+    AddPartition(builder, "vendor", 2477920, 10231808, nullptr);
+
+    std::vector<Interval> new_intervals;
+
+    Partition* p = builder->FindPartition("vendor");
+    ASSERT_NE(p, nullptr);
+    ASSERT_TRUE(builder->ResizePartition(p, 1282031616));
+    ASSERT_GE(p->extents().size(), 1);
+    for (const auto& extent : p->extents()) {
+        new_intervals.push_back(ToInterval(extent));
+    }
+
+    std::vector<Interval> overlap = Interval::Intersect(old_intervals, new_intervals);
+    ASSERT_TRUE(overlap.empty());
+}
+
+TEST_F(BuilderTest, LinearExtentOverlap) {
+    LinearExtent extent(20, 0, 10);
+
+    EXPECT_TRUE(extent.OverlapsWith(LinearExtent{20, 0, 10}));
+    EXPECT_TRUE(extent.OverlapsWith(LinearExtent{50, 0, 10}));
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{20, 0, 30}));
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{10, 0, 0}));
+    EXPECT_TRUE(extent.OverlapsWith(LinearExtent{20, 0, 0}));
+    EXPECT_TRUE(extent.OverlapsWith(LinearExtent{40, 0, 0}));
+    EXPECT_TRUE(extent.OverlapsWith(LinearExtent{20, 0, 15}));
+
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{20, 1, 0}));
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{50, 1, 10}));
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{40, 1, 0}));
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{20, 1, 15}));
+    EXPECT_FALSE(extent.OverlapsWith(LinearExtent{20, 1, 10}));
+}
diff --git a/fs_mgr/liblp/device_test.cpp b/fs_mgr/liblp/device_test.cpp
new file mode 100644
index 0000000..382d53d
--- /dev/null
+++ b/fs_mgr/liblp/device_test.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/properties.h>
+#include <fs_mgr.h>
+#include <fstab/fstab.h>
+#include <gtest/gtest.h>
+#include <liblp/liblp.h>
+#include <liblp/metadata_format.h>
+#include <liblp/partition_opener.h>
+#include <liblp/property_fetcher.h>
+
+#include "liblp_test.h"
+
+using namespace android::fs_mgr;
+using namespace android::fs_mgr::testing;
+using ::testing::Return;
+
+// Compliance test on the actual device with dynamic partitions.
+class DeviceTest : public LiblpTest {
+  public:
+    void SetUp() override {
+        // Read real properties.
+        IPropertyFetcher::OverrideForTesting(std::make_unique<PropertyFetcher>());
+        if (!IPropertyFetcher::GetInstance()->GetBoolProperty("ro.boot.dynamic_partitions",
+                                                              false)) {
+            GTEST_SKIP() << "Device doesn't have dynamic partitions enabled, skipping";
+        }
+    }
+};
+
+TEST_F(DeviceTest, BlockDeviceInfo) {
+    PartitionOpener opener;
+    BlockDeviceInfo device_info;
+    ASSERT_TRUE(opener.GetInfo(fs_mgr_get_super_partition_name(), &device_info));
+
+    // Sanity check that the device doesn't give us some weird inefficient
+    // alignment.
+    EXPECT_EQ(device_info.alignment % LP_SECTOR_SIZE, 0);
+    EXPECT_EQ(device_info.alignment_offset % LP_SECTOR_SIZE, 0);
+    EXPECT_LE(device_info.alignment_offset, INT_MAX);
+    EXPECT_EQ(device_info.logical_block_size % LP_SECTOR_SIZE, 0);
+
+    // Having an alignment offset > alignment doesn't really make sense.
+    EXPECT_LT(device_info.alignment_offset, device_info.alignment);
+}
+
+TEST_F(DeviceTest, ReadSuperPartitionCurrentSlot) {
+    auto slot_suffix = fs_mgr_get_slot_suffix();
+    auto slot_number = SlotNumberForSlotSuffix(slot_suffix);
+    auto super_name = fs_mgr_get_super_partition_name(slot_number);
+    auto metadata = ReadMetadata(super_name, slot_number);
+    EXPECT_NE(metadata, nullptr);
+}
+
+TEST_F(DeviceTest, ReadSuperPartitionOtherSlot) {
+    auto other_slot_suffix = fs_mgr_get_other_slot_suffix();
+    if (other_slot_suffix.empty()) {
+        GTEST_SKIP() << "No other slot, skipping";
+    }
+    if (IPropertyFetcher::GetInstance()->GetBoolProperty("ro.boot.dynamic_partitions_retrofit",
+                                                         false)) {
+        GTEST_SKIP() << "Device with retrofit dynamic partition may not have metadata at other "
+                     << "slot, skipping";
+    }
+
+    auto other_slot_number = SlotNumberForSlotSuffix(other_slot_suffix);
+    auto other_super_name = fs_mgr_get_super_partition_name(other_slot_number);
+    auto other_metadata = ReadMetadata(other_super_name, other_slot_number);
+    EXPECT_NE(other_metadata, nullptr);
+}
diff --git a/fs_mgr/liblp/images.cpp b/fs_mgr/liblp/images.cpp
index db27022..e4d92ca 100644
--- a/fs_mgr/liblp/images.cpp
+++ b/fs_mgr/liblp/images.cpp
@@ -17,6 +17,7 @@
 #include "images.h"
 
 #include <limits.h>
+#include <sys/stat.h>
 
 #include <android-base/file.h>
 
@@ -27,12 +28,45 @@
 namespace android {
 namespace fs_mgr {
 
+using android::base::borrowed_fd;
 using android::base::unique_fd;
 
 #if defined(_WIN32)
 static const int O_NOFOLLOW = 0;
 #endif
 
+static bool IsEmptySuperImage(borrowed_fd fd) {
+    struct stat s;
+    if (fstat(fd.get(), &s) < 0) {
+        PERROR << __PRETTY_FUNCTION__ << " fstat failed";
+        return false;
+    }
+    if (s.st_size < LP_METADATA_GEOMETRY_SIZE) {
+        return false;
+    }
+
+    // Rewind back to the start, read the geometry struct.
+    LpMetadataGeometry geometry = {};
+    if (SeekFile64(fd.get(), 0, SEEK_SET) < 0) {
+        PERROR << __PRETTY_FUNCTION__ << " lseek failed";
+        return false;
+    }
+    if (!android::base::ReadFully(fd, &geometry, sizeof(geometry))) {
+        PERROR << __PRETTY_FUNCTION__ << " read failed";
+        return false;
+    }
+    return geometry.magic == LP_METADATA_GEOMETRY_MAGIC;
+}
+
+bool IsEmptySuperImage(const std::string& file) {
+    unique_fd fd = GetControlFileOrOpen(file, O_RDONLY | O_CLOEXEC);
+    if (fd < 0) {
+        PERROR << __PRETTY_FUNCTION__ << " open failed";
+        return false;
+    }
+    return IsEmptySuperImage(fd);
+}
+
 std::unique_ptr<LpMetadata> ReadFromImageFile(int fd) {
     std::unique_ptr<uint8_t[]> buffer = std::make_unique<uint8_t[]>(LP_METADATA_GEOMETRY_SIZE);
     if (SeekFile64(fd, 0, SEEK_SET) < 0) {
@@ -76,7 +110,7 @@
     return ReadFromImageFile(fd);
 }
 
-bool WriteToImageFile(int fd, const LpMetadata& input) {
+bool WriteToImageFile(borrowed_fd fd, const LpMetadata& input) {
     std::string geometry = SerializeGeometry(input.geometry);
     std::string metadata = SerializeMetadata(input);
 
@@ -89,8 +123,8 @@
     return true;
 }
 
-bool WriteToImageFile(const char* file, const LpMetadata& input) {
-    unique_fd fd(open(file, O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, 0644));
+bool WriteToImageFile(const std::string& file, const LpMetadata& input) {
+    unique_fd fd(open(file.c_str(), O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, 0644));
     if (fd < 0) {
         PERROR << __PRETTY_FUNCTION__ << " open failed: " << file;
         return false;
@@ -149,8 +183,8 @@
     return device_images_.size() == metadata_.block_devices.size();
 }
 
-bool ImageBuilder::Export(const char* file) {
-    unique_fd fd(open(file, O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, 0644));
+bool ImageBuilder::Export(const std::string& file) {
+    unique_fd fd(open(file.c_str(), O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, 0644));
     if (fd < 0) {
         PERROR << "open failed: " << file;
         return false;
@@ -438,7 +472,7 @@
     return temp_fds_.back().get();
 }
 
-bool WriteToImageFile(const char* file, const LpMetadata& metadata, uint32_t block_size,
+bool WriteToImageFile(const std::string& file, const LpMetadata& metadata, uint32_t block_size,
                       const std::map<std::string, std::string>& images, bool sparsify) {
     ImageBuilder builder(metadata, block_size, images, sparsify);
     return builder.IsValid() && builder.Build() && builder.Export(file);
diff --git a/fs_mgr/liblp/images.h b/fs_mgr/liblp/images.h
index 75060f9..88e5882 100644
--- a/fs_mgr/liblp/images.h
+++ b/fs_mgr/liblp/images.h
@@ -29,8 +29,6 @@
 // Helper function to serialize geometry and metadata to a normal file, for
 // flashing or debugging.
 std::unique_ptr<LpMetadata> ReadFromImageFile(int fd);
-bool WriteToImageFile(const char* file, const LpMetadata& metadata);
-bool WriteToImageFile(int fd, const LpMetadata& metadata);
 
 // We use an object to build the image file since it requires that data
 // pointers be held alive until the sparse file is destroyed. It's easier
@@ -41,7 +39,7 @@
                  const std::map<std::string, std::string>& images, bool sparsify);
 
     bool Build();
-    bool Export(const char* file);
+    bool Export(const std::string& file);
     bool ExportFiles(const std::string& dir);
     bool IsValid() const;
 
diff --git a/fs_mgr/liblp/include/liblp/builder.h b/fs_mgr/liblp/include/liblp/builder.h
index c706f2a..6c7a707 100644
--- a/fs_mgr/liblp/include/liblp/builder.h
+++ b/fs_mgr/liblp/include/liblp/builder.h
@@ -24,6 +24,7 @@
 #include <memory>
 #include <optional>
 #include <set>
+#include <string_view>
 
 #include "liblp.h"
 #include "partition_opener.h"
@@ -32,10 +33,14 @@
 namespace fs_mgr {
 
 class LinearExtent;
+struct Interval;
 
 // By default, partitions are aligned on a 1MiB boundary.
-static const uint32_t kDefaultPartitionAlignment = 1024 * 1024;
-static const uint32_t kDefaultBlockSize = 4096;
+static constexpr uint32_t kDefaultPartitionAlignment = 1024 * 1024;
+static constexpr uint32_t kDefaultBlockSize = 4096;
+
+// Name of the default group in a metadata.
+static constexpr std::string_view kDefaultGroup = "default";
 
 // Abstraction around dm-targets that can be encoded into logical partition tables.
 class Extent {
@@ -66,9 +71,10 @@
     uint64_t end_sector() const { return physical_sector_ + num_sectors_; }
     uint32_t device_index() const { return device_index_; }
 
-    bool OwnsSector(uint64_t sector) const {
-        return sector >= physical_sector_ && sector < end_sector();
-    }
+    bool OverlapsWith(const LinearExtent& other) const;
+    bool OverlapsWith(const Interval& interval) const;
+
+    Interval AsInterval() const;
 
   private:
     uint32_t device_index_;
@@ -87,7 +93,7 @@
     friend class MetadataBuilder;
 
   public:
-    explicit PartitionGroup(const std::string& name, uint64_t maximum_size)
+    explicit PartitionGroup(std::string_view name, uint64_t maximum_size)
         : name_(name), maximum_size_(maximum_size) {}
 
     const std::string& name() const { return name_; }
@@ -104,7 +110,7 @@
     friend class MetadataBuilder;
 
   public:
-    Partition(const std::string& name, const std::string& group_name, uint32_t attributes);
+    Partition(std::string_view name, std::string_view group_name, uint32_t attributes);
 
     // Add a raw extent.
     void AddExtent(std::unique_ptr<Extent>&& extent);
@@ -119,18 +125,55 @@
     const std::string& name() const { return name_; }
     const std::string& group_name() const { return group_name_; }
     uint32_t attributes() const { return attributes_; }
+    void set_attributes(uint32_t attributes) { attributes_ = attributes; }
     const std::vector<std::unique_ptr<Extent>>& extents() const { return extents_; }
     uint64_t size() const { return size_; }
 
+    // Return a copy of *this, but with extents that includes only the first
+    // |aligned_size| bytes. |aligned_size| should be aligned to
+    // logical_block_size() of the MetadataBuilder that this partition belongs
+    // to.
+    Partition GetBeginningExtents(uint64_t aligned_size) const;
+
   private:
     void ShrinkTo(uint64_t aligned_size);
-    void set_group_name(const std::string& group_name) { group_name_ = group_name; }
+    void set_group_name(std::string_view group_name) { group_name_ = group_name; }
 
     std::string name_;
     std::string group_name_;
     std::vector<std::unique_ptr<Extent>> extents_;
     uint32_t attributes_;
     uint64_t size_;
+    bool disabled_;
+};
+
+// An interval in the metadata. This is similar to a LinearExtent with one difference.
+// LinearExtent represents a "used" region in the metadata, while Interval can also represent
+// an "unused" region.
+struct Interval {
+    uint32_t device_index;
+    uint64_t start;
+    uint64_t end;
+
+    Interval(uint32_t device_index, uint64_t start, uint64_t end)
+        : device_index(device_index), start(start), end(end) {}
+    uint64_t length() const { return end - start; }
+
+    // Note: the device index is not included in sorting (intervals are
+    // sorted in per-device lists).
+    bool operator<(const Interval& other) const {
+        return (start == other.start) ? end < other.end : start < other.start;
+    }
+
+    std::unique_ptr<Extent> AsExtent() const;
+
+    // Intersect |a| with |b|.
+    // If no intersection, result has 0 length().
+    static Interval Intersect(const Interval& a, const Interval& b);
+
+    // Intersect two lists of intervals, and store result to |a|.
+    static std::vector<Interval> Intersect(const std::vector<Interval>& a,
+                                           const std::vector<Interval>& b);
 };
 
 class MetadataBuilder {
@@ -166,10 +209,15 @@
     // metadata may not have the target slot's devices listed yet, in which
     // case, it is automatically upgraded to include all available block
     // devices.
+    // If |always_keep_source_slot| is set, on a Virtual A/B device
+    // - source slot partitions are kept.
+    // - UPDATED flag is cleared.
+    // This is useful when applying a downgrade package.
     static std::unique_ptr<MetadataBuilder> NewForUpdate(const IPartitionOpener& opener,
                                                          const std::string& source_partition,
                                                          uint32_t source_slot_number,
-                                                         uint32_t target_slot_number);
+                                                         uint32_t target_slot_number,
+                                                         bool always_keep_source_slot = false);
 
     // Import an existing table for modification. If the table is not valid, for
     // example it contains duplicate partition names, then nullptr is returned.
@@ -196,15 +244,12 @@
         return New(device_info, metadata_max_size, metadata_slot_count);
     }
 
-    // Used by the test harness to override whether the device is "A/B".
-    static void OverrideABForTesting(bool ab_device);
-
     // Define a new partition group. By default there is one group called
     // "default", with an unrestricted size. A non-zero size will restrict the
     // total space used by all partitions in the group.
     //
     // This can fail and return false if the group already exists.
-    bool AddGroup(const std::string& group_name, uint64_t maximum_size);
+    bool AddGroup(std::string_view group_name, uint64_t maximum_size);
 
     // Export metadata so it can be serialized to an image, to disk, or mounted
     // via device-mapper.
@@ -212,7 +257,7 @@
 
     // Add a partition, returning a handle so it can be sized as needed. If a
     // partition with the given name already exists, nullptr is returned.
-    Partition* AddPartition(const std::string& name, const std::string& group_name,
+    Partition* AddPartition(std::string_view name, std::string_view group_name,
                             uint32_t attributes);
 
     // Same as AddPartition above, but uses the default partition group which
@@ -220,13 +265,13 @@
     Partition* AddPartition(const std::string& name, uint32_t attributes);
 
     // Delete a partition by name if it exists.
-    void RemovePartition(const std::string& name);
+    void RemovePartition(std::string_view name);
 
     // Find a partition by name. If no partition is found, nullptr is returned.
-    Partition* FindPartition(const std::string& name);
+    Partition* FindPartition(std::string_view name);
 
     // Find a group by name. If no group is found, nullptr is returned.
-    PartitionGroup* FindGroup(const std::string& name);
+    PartitionGroup* FindGroup(std::string_view name);
 
     // Add a predetermined extent to a partition.
     bool AddLinearExtent(Partition* partition, const std::string& block_device,
@@ -242,16 +287,20 @@
     //
     // Note, this is an in-memory operation, and it does not alter the
     // underlying filesystem or contents of the partition on disk.
-    bool ResizePartition(Partition* partition, uint64_t requested_size);
+    //
+    // If |free_region_hint| is not empty, it will only try to allocate extents
+    // in regions within the list.
+    bool ResizePartition(Partition* partition, uint64_t requested_size,
+                         const std::vector<Interval>& free_region_hint = {});
 
     // Return the list of partitions belonging to a group.
-    std::vector<Partition*> ListPartitionsInGroup(const std::string& group_name);
+    std::vector<Partition*> ListPartitionsInGroup(std::string_view group_name);
 
     // Changes a partition's group. Size constraints will not be checked until
     // the metadata is exported, to avoid errors during potential group and
     // size shuffling operations. This will return false if the new group does
     // not exist.
-    bool ChangePartitionGroup(Partition* partition, const std::string& group_name);
+    bool ChangePartitionGroup(Partition* partition, std::string_view group_name);
 
     // Changes the size of a partition group. Size constraints will not be
     // checked until metadata is exported, to avoid errors during group
@@ -267,10 +316,12 @@
     std::vector<std::string> ListGroups() const;
 
     // Remove all partitions belonging to a group, then remove the group.
-    void RemoveGroupAndPartitions(const std::string& group_name);
+    void RemoveGroupAndPartitions(std::string_view group_name);
 
     // Set the LP_METADATA_AUTO_SLOT_SUFFIXING flag.
     void SetAutoSlotSuffixing();
+    // Set the LP_HEADER_FLAG_VIRTUAL_AB_DEVICE flag.
+    void SetVirtualABDeviceFlag();
 
     // If set, checks for slot suffixes will be ignored internally.
     void IgnoreSlotSuffixing();
@@ -278,6 +329,10 @@
     bool GetBlockDeviceInfo(const std::string& partition_name, BlockDeviceInfo* info) const;
     bool UpdateBlockDeviceInfo(const std::string& partition_name, const BlockDeviceInfo& info);
 
+    // Require the expanded metadata header. This is exposed for testing, and
+    // is normally only called as needed by other methods.
+    void RequireExpandedMetadataHeader();
+
     // Attempt to preserve the named partitions from an older metadata. If this
     // is not possible (for example, the block device list has changed) then
     // false is returned.
@@ -286,6 +341,14 @@
     // Return true if a block device is found, else false.
     bool HasBlockDevice(const std::string& partition_name) const;
 
+    // Return the name of the block device at |index|.
+    std::string GetBlockDevicePartitionName(uint64_t index) const;
+
+    // Return the list of free regions not occupied by extents in the metadata.
+    std::vector<Interval> GetFreeRegions() const;
+
+    uint64_t logical_block_size() const;
+
   private:
     MetadataBuilder();
     MetadataBuilder(const MetadataBuilder&) = delete;
@@ -295,7 +358,8 @@
     bool Init(const std::vector<BlockDeviceInfo>& block_devices, const std::string& super_partition,
               uint32_t metadata_max_size, uint32_t metadata_slot_count);
     bool Init(const LpMetadata& metadata);
-    bool GrowPartition(Partition* partition, uint64_t aligned_size);
+    bool GrowPartition(Partition* partition, uint64_t aligned_size,
+                       const std::vector<Interval>& free_region_hint);
     void ShrinkPartition(Partition* partition, uint64_t aligned_size);
     uint64_t AlignSector(const LpMetadataBlockDevice& device, uint64_t sector) const;
     uint64_t TotalSizeOfGroup(PartitionGroup* group) const;
@@ -306,26 +370,18 @@
     void ImportExtents(Partition* dest, const LpMetadata& metadata,
                        const LpMetadataPartition& source);
     bool ImportPartition(const LpMetadata& metadata, const LpMetadataPartition& source);
-    bool IsABDevice() const;
-    bool IsRetrofitDevice() const;
+
+    // Return true if the device is an AB device.
+    static bool IsABDevice();
+
+    // Return true if the device is retrofitting dynamic partitions.
+    static bool IsRetrofitDynamicPartitionsDevice();
+
+    // Return true if _b partitions should be prioritized at the second half of the device.
+    bool ShouldHalveSuper() const;
+
     bool ValidatePartitionGroups() const;
 
-    struct Interval {
-        uint32_t device_index;
-        uint64_t start;
-        uint64_t end;
-
-        Interval(uint32_t device_index, uint64_t start, uint64_t end)
-            : device_index(device_index), start(start), end(end) {}
-        uint64_t length() const { return end - start; }
-
-        // Note: the device index is not included in sorting (intervals are
-        // sorted in per-device lists).
-        bool operator<(const Interval& other) const {
-            return (start == other.start) ? end < other.end : start < other.start;
-        }
-    };
-    std::vector<Interval> GetFreeRegions() const;
     bool IsAnyRegionCovered(const std::vector<Interval>& regions,
                             const LinearExtent& candidate) const;
     bool IsAnyRegionAllocated(const LinearExtent& candidate) const;
@@ -336,8 +392,8 @@
                                                     const std::vector<Interval>& free_list,
                                                     uint64_t sectors_needed) const;
 
-    static bool sABOverrideValue;
-    static bool sABOverrideSet;
+    static bool UpdateMetadataForOtherSuper(LpMetadata* metadata, uint32_t source_slot_number,
+                                            uint32_t target_slot_number);
 
     LpMetadataGeometry geometry_;
     LpMetadataHeader header_;
@@ -345,7 +401,6 @@
     std::vector<std::unique_ptr<PartitionGroup>> groups_;
     std::vector<LpMetadataBlockDevice> block_devices_;
     bool auto_slot_suffixing_;
-    bool ignore_slot_suffixing_;
 };
 
 // Read BlockDeviceInfo for a given block device. This always returns false
diff --git a/fs_mgr/liblp/include/liblp/liblp.h b/fs_mgr/liblp/include/liblp/liblp.h
index 5f782b0..04f8987 100644
--- a/fs_mgr/liblp/include/liblp/liblp.h
+++ b/fs_mgr/liblp/include/liblp/liblp.h
@@ -70,11 +70,21 @@
                           uint32_t slot_number);
 std::unique_ptr<LpMetadata> ReadMetadata(const std::string& super_partition, uint32_t slot_number);
 
-// Read/Write logical partition metadata to an image file, for diagnostics or
+// Returns whether an image is an "empty" image or not. An empty image contains
+// only metadata. Unlike a flashed block device, there are no reserved bytes or
+// backup sections, and only one slot is stored (even if multiple slots are
+// supported). It is a format specifically for storing only metadata.
+bool IsEmptySuperImage(const std::string& file);
+
+// Read/Write logical partition metadata and contents to an image file, for
 // flashing.
-bool WriteToImageFile(const char* file, const LpMetadata& metadata, uint32_t block_size,
+bool WriteToImageFile(const std::string& file, const LpMetadata& metadata, uint32_t block_size,
                       const std::map<std::string, std::string>& images, bool sparsify);
-bool WriteToImageFile(const char* file, const LpMetadata& metadata);
+
+// Read/Write logical partition metadata to an image file, for producing a
+// super_empty.img (for fastboot wipe-super/update-super) or for diagnostics.
+bool WriteToImageFile(const std::string& file, const LpMetadata& metadata);
+bool WriteToImageFile(android::base::borrowed_fd fd, const LpMetadata& metadata);
 std::unique_ptr<LpMetadata> ReadFromImageFile(const std::string& image_file);
 std::unique_ptr<LpMetadata> ReadFromImageBlob(const void* data, size_t bytes);
 
@@ -107,6 +117,10 @@
 std::string SlotSuffixForSlotNumber(uint32_t slot_number);
 std::string GetPartitionSlotSuffix(const std::string& partition_name);
 
+// Helpers for common functions.
+const LpMetadataPartition* FindPartition(const LpMetadata& metadata, const std::string& name);
+uint64_t GetPartitionSize(const LpMetadata& metadata, const LpMetadataPartition& partition);
+
 }  // namespace fs_mgr
 }  // namespace android
 
diff --git a/fs_mgr/liblp/include/liblp/metadata_format.h b/fs_mgr/liblp/include/liblp/metadata_format.h
index 8934aaf..41d8b0c 100644
--- a/fs_mgr/liblp/include/liblp/metadata_format.h
+++ b/fs_mgr/liblp/include/liblp/metadata_format.h
@@ -39,7 +39,14 @@
 
 /* Current metadata version. */
 #define LP_METADATA_MAJOR_VERSION 10
-#define LP_METADATA_MINOR_VERSION 0
+#define LP_METADATA_MINOR_VERSION_MIN 0
+#define LP_METADATA_MINOR_VERSION_MAX 2
+
+/* Metadata version needed to use the UPDATED partition attribute. */
+#define LP_METADATA_VERSION_FOR_UPDATED_ATTR 1
+
+/* Metadata version needed for the new expanded header struct. */
+#define LP_METADATA_VERSION_FOR_EXPANDED_HEADER 2
 
 /* Attributes for the LpMetadataPartition::attributes field.
  *
@@ -58,8 +65,24 @@
  */
 #define LP_PARTITION_ATTR_SLOT_SUFFIXED (1 << 1)
 
-/* Mask that defines all valid attributes. */
-#define LP_PARTITION_ATTRIBUTE_MASK (LP_PARTITION_ATTR_READONLY | LP_PARTITION_ATTR_SLOT_SUFFIXED)
+/* This flag is applied automatically when using MetadataBuilder::NewForUpdate.
+ * It signals that the partition was created (or modified) for a snapshot-based
+ * update. If this flag is not present, the partition was likely flashed via
+ * fastboot.
+ */
+#define LP_PARTITION_ATTR_UPDATED (1 << 2)
+
+/* This flag marks a partition as disabled. It should not be used or mapped. */
+#define LP_PARTITION_ATTR_DISABLED (1 << 3)
+
+/* Mask that defines all valid attributes. When changing this, make sure to
+ * update ParseMetadata().
+ */
+#define LP_PARTITION_ATTRIBUTE_MASK_V0 \
+    (LP_PARTITION_ATTR_READONLY | LP_PARTITION_ATTR_SLOT_SUFFIXED)
+#define LP_PARTITION_ATTRIBUTE_MASK_V1 (LP_PARTITION_ATTR_UPDATED | LP_PARTITION_ATTR_DISABLED)
+#define LP_PARTITION_ATTRIBUTE_MASK \
+    (LP_PARTITION_ATTRIBUTE_MASK_V0 | LP_PARTITION_ATTRIBUTE_MASK_V1)
 
 /* Default name of the physical partition that holds logical partition entries.
  * The layout of this partition will look like:
@@ -196,8 +219,27 @@
     LpMetadataTableDescriptor groups;
     /* 116: Block device table. */
     LpMetadataTableDescriptor block_devices;
+
+    /* Everything past here is header version 1.2+, and is only included if
+     * needed. When liblp supporting >= 1.2 reads a < 1.2 header, it must
+     * zero these additional fields.
+     */
+
+    /* 128: See LP_HEADER_FLAG_ constants for possible values. Header flags are
+     * independent of the version number and intended to be informational only.
+     * New flags can be added without bumping the version.
+     */
+    uint32_t flags;
+
+    /* 132: Reserved (zero), pad to 256 bytes. */
+    uint8_t reserved[124];
 } __attribute__((packed)) LpMetadataHeader;
 
+/* This device uses Virtual A/B. Note that on retrofit devices, the expanded
+ * header may not be present.
+ */
+#define LP_HEADER_FLAG_VIRTUAL_AB_DEVICE 0x1
+
 /* This struct defines a logical partition entry, similar to what would be
  * present in a GUID Partition Table.
  */
@@ -335,6 +377,25 @@
  */
 #define LP_BLOCK_DEVICE_SLOT_SUFFIXED (1 << 0)
 
+/* For ease of writing compatibility checks, the original metadata header is
+ * preserved below, and typedefs are provided for the current version.
+ */
+typedef struct LpMetadataHeaderV1_0 {
+    uint32_t magic;
+    uint16_t major_version;
+    uint16_t minor_version;
+    uint32_t header_size;
+    uint8_t header_checksum[32];
+    uint32_t tables_size;
+    uint8_t tables_checksum[32];
+    LpMetadataTableDescriptor partitions;
+    LpMetadataTableDescriptor extents;
+    LpMetadataTableDescriptor groups;
+    LpMetadataTableDescriptor block_devices;
+} __attribute__((packed)) LpMetadataHeaderV1_0;
+
+typedef LpMetadataHeader LpMetadataHeaderV1_2;
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
diff --git a/fs_mgr/liblp/include/liblp/mock_property_fetcher.h b/fs_mgr/liblp/include/liblp/mock_property_fetcher.h
new file mode 100644
index 0000000..f15611b
--- /dev/null
+++ b/fs_mgr/liblp/include/liblp/mock_property_fetcher.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include <liblp/property_fetcher.h>
+
+namespace android {
+namespace fs_mgr {
+namespace testing {
+
+class MockPropertyFetcher : public IPropertyFetcher {
+  public:
+    MOCK_METHOD2(GetProperty, std::string(const std::string&, const std::string&));
+    MOCK_METHOD2(GetBoolProperty, bool(const std::string&, bool));
+
+    // By default, return default_value for all functions.
+    MockPropertyFetcher() {
+        using ::testing::_;
+        using ::testing::Invoke;
+        ON_CALL(*this, GetProperty(_, _)).WillByDefault(Invoke([](const auto&, const auto& def) {
+            return def;
+        }));
+        ON_CALL(*this, GetBoolProperty(_, _)).WillByDefault(Invoke([](const auto&, auto def) {
+            return def;
+        }));
+    }
+};
+
+static inline void ResetMockPropertyFetcher() {
+    IPropertyFetcher::OverrideForTesting(
+            std::make_unique<::testing::NiceMock<MockPropertyFetcher>>());
+}
+
+static inline MockPropertyFetcher* GetMockedPropertyFetcher() {
+    return static_cast<MockPropertyFetcher*>(IPropertyFetcher::GetInstance());
+}
+
+}  // namespace testing
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/liblp/include/liblp/partition_opener.h b/fs_mgr/liblp/include/liblp/partition_opener.h
index e506bd5..7c9100b 100644
--- a/fs_mgr/liblp/include/liblp/partition_opener.h
+++ b/fs_mgr/liblp/include/liblp/partition_opener.h
@@ -62,6 +62,11 @@
     // Return block device information about the given named physical partition.
     // The name can be an absolute path if the full path is already known.
     virtual bool GetInfo(const std::string& partition_name, BlockDeviceInfo* info) const = 0;
+
+    // Return a path that can be used to pass the block device to device-mapper.
+    // This must either result in an absolute path, or a major:minor device
+    // sequence.
+    virtual std::string GetDeviceString(const std::string& partition_name) const = 0;
 };
 
 // Helper class to implement IPartitionOpener. If |partition_name| is not an
@@ -71,6 +76,7 @@
     virtual android::base::unique_fd Open(const std::string& partition_name,
                                           int flags) const override;
     virtual bool GetInfo(const std::string& partition_name, BlockDeviceInfo* info) const override;
+    virtual std::string GetDeviceString(const std::string& partition_name) const override;
 };
 
 }  // namespace fs_mgr
diff --git a/fs_mgr/liblp/include/liblp/property_fetcher.h b/fs_mgr/liblp/include/liblp/property_fetcher.h
new file mode 100644
index 0000000..e73a1f5
--- /dev/null
+++ b/fs_mgr/liblp/include/liblp/property_fetcher.h
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <memory>
+
+namespace android {
+namespace fs_mgr {
+
+class IPropertyFetcher {
+  public:
+    virtual ~IPropertyFetcher() = default;
+    virtual std::string GetProperty(const std::string& key, const std::string& defaultValue) = 0;
+    virtual bool GetBoolProperty(const std::string& key, bool defaultValue) = 0;
+
+    static IPropertyFetcher* GetInstance();
+    static void OverrideForTesting(std::unique_ptr<IPropertyFetcher>&&);
+};
+
+class PropertyFetcher : public IPropertyFetcher {
+  public:
+    ~PropertyFetcher() = default;
+    std::string GetProperty(const std::string& key, const std::string& defaultValue) override;
+    bool GetBoolProperty(const std::string& key, bool defaultValue) override;
+};
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/liblp/io_test.cpp b/fs_mgr/liblp/io_test.cpp
index fcef1f0..e67fb33 100644
--- a/fs_mgr/liblp/io_test.cpp
+++ b/fs_mgr/liblp/io_test.cpp
@@ -21,12 +21,12 @@
 
 #include <android-base/file.h>
 #include <android-base/unique_fd.h>
-#include <fs_mgr.h>
-#include <fstab/fstab.h>
+#include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <liblp/builder.h>
 
 #include "images.h"
+#include "liblp_test.h"
 #include "reader.h"
 #include "test_partition_opener.h"
 #include "utility.h"
@@ -34,6 +34,9 @@
 
 using namespace std;
 using namespace android::fs_mgr;
+using namespace android::fs_mgr::testing;
+using ::testing::_;
+using ::testing::Return;
 using unique_fd = android::base::unique_fd;
 
 // Our tests assume a 128KiB disk with two 512 byte metadata slots.
@@ -120,7 +123,7 @@
 }
 
 // Test that our CreateFakeDisk() function works.
-TEST(liblp, CreateFakeDisk) {
+TEST_F(LiblpTest, CreateFakeDisk) {
     unique_fd fd = CreateFakeDisk();
     ASSERT_GE(fd, 0);
 
@@ -136,7 +139,7 @@
 
 // Flashing metadata should not work if the metadata was created for a larger
 // disk than the destination disk.
-TEST(liblp, ExportDiskTooSmall) {
+TEST_F(LiblpTest, ExportDiskTooSmall) {
     unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(kDiskSize + 4096, 512, 2);
     ASSERT_NE(builder, nullptr);
     unique_ptr<LpMetadata> exported = builder->Export();
@@ -153,7 +156,7 @@
 }
 
 // Test the basics of flashing a partition and reading it back.
-TEST(liblp, FlashAndReadback) {
+TEST_F(LiblpTest, FlashAndReadback) {
     unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
     ASSERT_NE(builder, nullptr);
     ASSERT_TRUE(AddDefaultPartitions(builder.get()));
@@ -203,7 +206,7 @@
 }
 
 // Test that we can update metadata slots without disturbing others.
-TEST(liblp, UpdateAnyMetadataSlot) {
+TEST_F(LiblpTest, UpdateAnyMetadataSlot) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -248,7 +251,7 @@
     }
 }
 
-TEST(liblp, InvalidMetadataSlot) {
+TEST_F(LiblpTest, InvalidMetadataSlot) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -267,7 +270,7 @@
 
 // Test that updating a metadata slot does not allow it to be computed based
 // on mismatching geometry.
-TEST(liblp, NoChangingGeometry) {
+TEST_F(LiblpTest, NoChangingGeometry) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -296,7 +299,7 @@
 }
 
 // Test that changing one bit of metadata is enough to break the checksum.
-TEST(liblp, BitFlipGeometry) {
+TEST_F(LiblpTest, BitFlipGeometry) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -315,7 +318,7 @@
     EXPECT_EQ(metadata->geometry.metadata_slot_count, 2);
 }
 
-TEST(liblp, ReadBackupGeometry) {
+TEST_F(LiblpTest, ReadBackupGeometry) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -335,7 +338,7 @@
     EXPECT_EQ(ReadMetadata(opener, "super", 0), nullptr);
 }
 
-TEST(liblp, ReadBackupMetadata) {
+TEST_F(LiblpTest, ReadBackupMetadata) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -362,14 +365,14 @@
 
 // Test that we don't attempt to write metadata if it would overflow its
 // reserved space.
-TEST(liblp, TooManyPartitions) {
+TEST_F(LiblpTest, TooManyPartitions) {
     unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
     ASSERT_NE(builder, nullptr);
 
     // Compute the maximum number of partitions we can fit in 512 bytes of
     // metadata. By default there is the header, one partition group, and a
     // block device entry.
-    static const size_t kMaxPartitionTableSize = kMetadataSize - sizeof(LpMetadataHeader) -
+    static const size_t kMaxPartitionTableSize = kMetadataSize - sizeof(LpMetadataHeaderV1_0) -
                                                  sizeof(LpMetadataPartitionGroup) -
                                                  sizeof(LpMetadataBlockDevice);
     size_t max_partitions = kMaxPartitionTableSize / sizeof(LpMetadataPartition);
@@ -416,7 +419,7 @@
 }
 
 // Test that we can read and write image files.
-TEST(liblp, ImageFiles) {
+TEST_F(LiblpTest, ImageFiles) {
     unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
     ASSERT_NE(builder, nullptr);
     ASSERT_TRUE(AddDefaultPartitions(builder.get()));
@@ -432,7 +435,7 @@
 }
 
 // Test that we can read images from buffers.
-TEST(liblp, ImageFilesInMemory) {
+TEST_F(LiblpTest, ImageFilesInMemory) {
     unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
     ASSERT_NE(builder, nullptr);
     ASSERT_TRUE(AddDefaultPartitions(builder.get()));
@@ -492,7 +495,7 @@
 
 // Test that an interrupted flash operation on the "primary" copy of metadata
 // is not fatal.
-TEST(liblp, UpdatePrimaryMetadataFailure) {
+TEST_F(LiblpTest, UpdatePrimaryMetadataFailure) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -520,7 +523,7 @@
 
 // Test that an interrupted flash operation on the "backup" copy of metadata
 // is not fatal.
-TEST(liblp, UpdateBackupMetadataFailure) {
+TEST_F(LiblpTest, UpdateBackupMetadataFailure) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -549,7 +552,7 @@
 // Test that an interrupted write *in between* writing metadata will read
 // the correct metadata copy. The primary is always considered newer than
 // the backup.
-TEST(liblp, UpdateMetadataCleanFailure) {
+TEST_F(LiblpTest, UpdateMetadataCleanFailure) {
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -586,7 +589,7 @@
 }
 
 // Test that writing a sparse image can be read back.
-TEST(liblp, FlashSparseImage) {
+TEST_F(LiblpTest, FlashSparseImage) {
     unique_fd fd = CreateFakeDisk();
     ASSERT_GE(fd, 0);
 
@@ -620,7 +623,7 @@
     ASSERT_NE(ReadBackupMetadata(fd.get(), geometry, 0), nullptr);
 }
 
-TEST(liblp, AutoSlotSuffixing) {
+TEST_F(LiblpTest, AutoSlotSuffixing) {
     unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
     ASSERT_NE(builder, nullptr);
     ASSERT_TRUE(AddDefaultPartitions(builder.get()));
@@ -663,7 +666,10 @@
     EXPECT_EQ(metadata->groups[1].flags, 0);
 }
 
-TEST(liblp, UpdateRetrofit) {
+TEST_F(LiblpTest, UpdateRetrofit) {
+    ON_CALL(*GetMockedPropertyFetcher(), GetBoolProperty("ro.boot.dynamic_partitions_retrofit", _))
+            .WillByDefault(Return(true));
+
     unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
     ASSERT_NE(builder, nullptr);
     ASSERT_TRUE(AddDefaultPartitions(builder.get()));
@@ -692,7 +698,10 @@
     ASSERT_TRUE(updated->extents.empty());
 }
 
-TEST(liblp, UpdateNonRetrofit) {
+TEST_F(LiblpTest, UpdateNonRetrofit) {
+    ON_CALL(*GetMockedPropertyFetcher(), GetBoolProperty("ro.boot.dynamic_partitions_retrofit", _))
+            .WillByDefault(Return(false));
+
     unique_fd fd = CreateFlashedDisk();
     ASSERT_GE(fd, 0);
 
@@ -705,18 +714,56 @@
     EXPECT_EQ(GetBlockDevicePartitionName(updated->block_devices[0]), "super");
 }
 
-TEST(liblp, ReadSuperPartition) {
-    auto slot_suffix = fs_mgr_get_slot_suffix();
-    auto slot_number = SlotNumberForSlotSuffix(slot_suffix);
-    auto super_name = fs_mgr_get_super_partition_name(slot_number);
-    auto metadata = ReadMetadata(super_name, slot_number);
-    ASSERT_NE(metadata, nullptr);
+TEST_F(LiblpTest, UpdateVirtualAB) {
+    ON_CALL(*GetMockedPropertyFetcher(), GetBoolProperty("ro.virtual_ab.enabled", _))
+            .WillByDefault(Return(true));
 
-    if (!slot_suffix.empty()) {
-        auto other_slot_suffix = fs_mgr_get_other_slot_suffix();
-        auto other_slot_number = SlotNumberForSlotSuffix(other_slot_suffix);
-        auto other_super_name = fs_mgr_get_super_partition_name(other_slot_number);
-        auto other_metadata = ReadMetadata(other_super_name, other_slot_number);
-        ASSERT_NE(other_metadata, nullptr);
-    }
+    unique_fd fd = CreateFlashedDisk();
+    ASSERT_GE(fd, 0);
+
+    DefaultPartitionOpener opener(fd);
+    auto builder = MetadataBuilder::NewForUpdate(opener, "super", 0, 1);
+    ASSERT_NE(builder, nullptr);
+    auto updated = builder->Export();
+    ASSERT_NE(updated, nullptr);
+    ASSERT_TRUE(UpdatePartitionTable(opener, "super", *updated.get(), 1));
+
+    // Validate old slot.
+    auto metadata = ReadMetadata(opener, "super", 0);
+    ASSERT_NE(metadata, nullptr);
+    ASSERT_EQ(metadata->header.minor_version, 0);
+    ASSERT_GE(metadata->partitions.size(), 1);
+    ASSERT_EQ(metadata->partitions[0].attributes & LP_PARTITION_ATTR_UPDATED, 0);
+
+    // Validate new slot.
+    metadata = ReadMetadata(opener, "super", 1);
+    ASSERT_NE(metadata, nullptr);
+    ASSERT_EQ(metadata->header.minor_version, 1);
+    ASSERT_GE(metadata->partitions.size(), 1);
+    ASSERT_NE(metadata->partitions[0].attributes & LP_PARTITION_ATTR_UPDATED, 0);
+}
+
+TEST_F(LiblpTest, ReadExpandedHeader) {
+    unique_ptr<MetadataBuilder> builder = CreateDefaultBuilder();
+    ASSERT_NE(builder, nullptr);
+    ASSERT_TRUE(AddDefaultPartitions(builder.get()));
+
+    builder->RequireExpandedMetadataHeader();
+
+    unique_fd fd = CreateFakeDisk();
+    ASSERT_GE(fd, 0);
+
+    DefaultPartitionOpener opener(fd);
+
+    // Export and flash.
+    unique_ptr<LpMetadata> exported = builder->Export();
+    ASSERT_NE(exported, nullptr);
+    exported->header.flags = 0x5e5e5e5e;
+    ASSERT_TRUE(FlashPartitionTable(opener, "super", *exported.get()));
+
+    unique_ptr<LpMetadata> imported = ReadMetadata(opener, "super", 0);
+    ASSERT_NE(imported, nullptr);
+    EXPECT_EQ(imported->header.header_size, sizeof(LpMetadataHeaderV1_2));
+    EXPECT_EQ(imported->header.header_size, exported->header.header_size);
+    EXPECT_EQ(imported->header.flags, exported->header.flags);
 }
diff --git a/fs_mgr/liblp/liblp_test.h b/fs_mgr/liblp/liblp_test.h
new file mode 100644
index 0000000..c61aaa5
--- /dev/null
+++ b/fs_mgr/liblp/liblp_test.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gtest/gtest.h>
+
+#include <liblp/mock_property_fetcher.h>
+
+namespace android {
+namespace fs_mgr {
+namespace testing {
+
+class LiblpTest : public ::testing::Test {
+  public:
+    void SetUp() override { ResetMockPropertyFetcher(); }
+    void TearDown() override { ResetMockPropertyFetcher(); }
+};
+
+}  // namespace testing
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/liblp/liblp_test.xml b/fs_mgr/liblp/liblp_test.xml
new file mode 100644
index 0000000..98414b1
--- /dev/null
+++ b/fs_mgr/liblp/liblp_test.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Config for liblp_test">
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer"/>
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="liblp_test->/data/local/tmp/liblp_test" />
+    </target_preparer>
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="liblp_test" />
+    </test>
+</configuration>
diff --git a/fs_mgr/liblp/partition_opener.cpp b/fs_mgr/liblp/partition_opener.cpp
index bb8ec9c..1d4db85 100644
--- a/fs_mgr/liblp/partition_opener.cpp
+++ b/fs_mgr/liblp/partition_opener.cpp
@@ -26,6 +26,7 @@
 #include <unistd.h>
 
 #include <android-base/file.h>
+#include <android-base/strings.h>
 
 #include "utility.h"
 
@@ -37,10 +38,24 @@
 namespace {
 
 std::string GetPartitionAbsolutePath(const std::string& path) {
-    if (path[0] == '/') {
+    if (android::base::StartsWith(path, "/")) {
         return path;
     }
-    return "/dev/block/by-name/" + path;
+
+    auto by_name = "/dev/block/by-name/" + path;
+    if (access(by_name.c_str(), F_OK) != 0) {
+        // If the by-name symlink doesn't exist, as a special case we allow
+        // certain devices to be used as partition names. This can happen if a
+        // Dynamic System Update is installed to an sdcard, which won't be in
+        // the boot device list.
+        //
+        // We whitelist because most devices in /dev/block are not valid for
+        // storing fiemaps.
+        if (android::base::StartsWith(path, "mmcblk")) {
+            return "/dev/block/" + path;
+        }
+    }
+    return by_name;
 }
 
 bool GetBlockDeviceInfo(const std::string& block_device, BlockDeviceInfo* device_info) {
@@ -63,6 +78,12 @@
         PERROR << __PRETTY_FUNCTION__ << "BLKALIGNOFF failed on " << block_device;
         return false;
     }
+    // The kernel can return -1 here when misaligned devices are stacked (i.e.
+    // device-mapper).
+    if (alignment_offset == -1) {
+        alignment_offset = 0;
+    }
+
     int logical_block_size;
     if (ioctl(fd, BLKSSZGET, &logical_block_size) < 0) {
         PERROR << __PRETTY_FUNCTION__ << "BLKSSZGET failed on " << block_device;
@@ -93,5 +114,9 @@
     return GetBlockDeviceInfo(path, info);
 }
 
+std::string PartitionOpener::GetDeviceString(const std::string& partition_name) const {
+    return GetPartitionAbsolutePath(partition_name);
+}
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/liblp/property_fetcher.cpp b/fs_mgr/liblp/property_fetcher.cpp
new file mode 100644
index 0000000..038ef4d
--- /dev/null
+++ b/fs_mgr/liblp/property_fetcher.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "liblp/property_fetcher.h"
+
+#include <memory>
+
+#include <android-base/properties.h>
+
+namespace android {
+namespace fs_mgr {
+
+std::string PropertyFetcher::GetProperty(const std::string& key, const std::string& default_value) {
+    return android::base::GetProperty(key, default_value);
+}
+
+bool PropertyFetcher::GetBoolProperty(const std::string& key, bool default_value) {
+    return android::base::GetBoolProperty(key, default_value);
+}
+
+static std::unique_ptr<IPropertyFetcher>* GetInstanceAllocation() {
+    static std::unique_ptr<IPropertyFetcher> instance = std::make_unique<PropertyFetcher>();
+    return &instance;
+}
+
+IPropertyFetcher* IPropertyFetcher::GetInstance() {
+    return GetInstanceAllocation()->get();
+}
+
+void IPropertyFetcher::OverrideForTesting(std::unique_ptr<IPropertyFetcher>&& fetcher) {
+    GetInstanceAllocation()->swap(fetcher);
+    fetcher.reset();
+}
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/liblp/reader.cpp b/fs_mgr/liblp/reader.cpp
index dcee6d2d..e6fd9f7 100644
--- a/fs_mgr/liblp/reader.cpp
+++ b/fs_mgr/liblp/reader.cpp
@@ -18,6 +18,7 @@
 
 #include <stddef.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <functional>
@@ -30,6 +31,9 @@
 namespace android {
 namespace fs_mgr {
 
+static_assert(sizeof(LpMetadataHeaderV1_0) == offsetof(LpMetadataHeader, flags),
+              "Incorrect LpMetadataHeader v0 size");
+
 // Helper class for reading descriptors and memory buffers in the same manner.
 class Reader {
   public:
@@ -160,30 +164,59 @@
     return true;
 }
 
-static bool ValidateMetadataHeader(const LpMetadataHeader& header) {
+static bool ReadMetadataHeader(Reader* reader, LpMetadata* metadata) {
+    // Note we zero the struct since older files will result in a partial read.
+    LpMetadataHeader& header = metadata->header;
+    memset(&header, 0, sizeof(header));
+
+    if (!reader->ReadFully(&header, sizeof(LpMetadataHeaderV1_0))) {
+        PERROR << __PRETTY_FUNCTION__ << " read failed";
+        return false;
+    }
+
+    // Do basic sanity checks before computing the checksum.
+    if (header.magic != LP_METADATA_HEADER_MAGIC) {
+        LERROR << "Logical partition metadata has invalid magic value.";
+        return false;
+    }
+    if (header.major_version != LP_METADATA_MAJOR_VERSION ||
+        header.minor_version > LP_METADATA_MINOR_VERSION_MAX) {
+        LERROR << "Logical partition metadata has incompatible version.";
+        return false;
+    }
+
+    // Validate the header struct size against the reported version.
+    uint32_t expected_struct_size = sizeof(header);
+    if (header.minor_version < LP_METADATA_VERSION_FOR_EXPANDED_HEADER) {
+        expected_struct_size = sizeof(LpMetadataHeaderV1_0);
+    }
+    if (header.header_size != expected_struct_size) {
+        LERROR << "Invalid partition metadata header struct size.";
+        return false;
+    }
+
+    // Read in any remaining fields, the last step needed before checksumming.
+    if (size_t remaining_bytes = header.header_size - sizeof(LpMetadataHeaderV1_0)) {
+        uint8_t* offset = reinterpret_cast<uint8_t*>(&header) + sizeof(LpMetadataHeaderV1_0);
+        if (!reader->ReadFully(offset, remaining_bytes)) {
+            PERROR << __PRETTY_FUNCTION__ << " read failed";
+            return false;
+        }
+    }
+
     // To compute the header's checksum, we have to temporarily set its checksum
-    // field to 0.
+    // field to 0. Note that we must only compute up to |header_size|.
     {
         LpMetadataHeader temp = header;
         memset(&temp.header_checksum, 0, sizeof(temp.header_checksum));
-        SHA256(&temp, sizeof(temp), temp.header_checksum);
-        if (memcmp(temp.header_checksum, header.header_checksum, sizeof(temp.header_checksum)) != 0) {
+        SHA256(&temp, temp.header_size, temp.header_checksum);
+        if (memcmp(temp.header_checksum, header.header_checksum, sizeof(temp.header_checksum)) !=
+            0) {
             LERROR << "Logical partition metadata has invalid checksum.";
             return false;
         }
     }
 
-    // Do basic validation of key metadata bits.
-    if (header.magic != LP_METADATA_HEADER_MAGIC) {
-        LERROR << "Logical partition metadata has invalid magic value.";
-        return false;
-    }
-    // Check that the version is compatible.
-    if (header.major_version != LP_METADATA_MAJOR_VERSION ||
-        header.minor_version > LP_METADATA_MINOR_VERSION) {
-        LERROR << "Logical partition metadata has incompatible version.";
-        return false;
-    }
     if (!ValidateTableBounds(header, header.partitions) ||
         !ValidateTableBounds(header, header.extents) ||
         !ValidateTableBounds(header, header.groups) ||
@@ -214,19 +247,22 @@
                                                  Reader* reader) {
     // First read and validate the header.
     std::unique_ptr<LpMetadata> metadata = std::make_unique<LpMetadata>();
-    if (!reader->ReadFully(&metadata->header, sizeof(metadata->header))) {
-        PERROR << __PRETTY_FUNCTION__ << " read " << sizeof(metadata->header) << "bytes failed";
-        return nullptr;
-    }
-    if (!ValidateMetadataHeader(metadata->header)) {
-        return nullptr;
-    }
+
     metadata->geometry = geometry;
+    if (!ReadMetadataHeader(reader, metadata.get())) {
+        return nullptr;
+    }
 
     LpMetadataHeader& header = metadata->header;
 
-    // Read the metadata payload. Allocation is fallible in case the metadata is
-    // corrupt and has some huge value.
+    // Sanity check the table size.
+    if (header.tables_size > geometry.metadata_max_size) {
+        LERROR << "Invalid partition metadata header table size.";
+        return nullptr;
+    }
+
+    // Read the metadata payload. Allocation is fallible since the table size
+    // could be large.
     std::unique_ptr<uint8_t[]> buffer(new (std::nothrow) uint8_t[header.tables_size]);
     if (!buffer) {
         LERROR << "Out of memory reading logical partition tables.";
@@ -244,6 +280,11 @@
         return nullptr;
     }
 
+    uint32_t valid_attributes = LP_PARTITION_ATTRIBUTE_MASK_V0;
+    if (metadata->header.minor_version >= LP_METADATA_VERSION_FOR_UPDATED_ATTR) {
+        valid_attributes |= LP_PARTITION_ATTRIBUTE_MASK_V1;
+    }
+
     // ValidateTableSize ensured that |cursor| is valid for the number of
     // entries in the table.
     uint8_t* cursor = buffer.get() + header.partitions.offset;
@@ -252,7 +293,7 @@
         memcpy(&partition, cursor, sizeof(partition));
         cursor += header.partitions.entry_size;
 
-        if (partition.attributes & ~LP_PARTITION_ATTRIBUTE_MASK) {
+        if (partition.attributes & ~valid_attributes) {
             LERROR << "Logical partition has invalid attribute set.";
             return nullptr;
         }
diff --git a/fs_mgr/liblp/utility.cpp b/fs_mgr/liblp/utility.cpp
index 72a3c57..d8e171b 100644
--- a/fs_mgr/liblp/utility.cpp
+++ b/fs_mgr/liblp/utility.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <fcntl.h>
+#include <inttypes.h>
 #include <stdint.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -24,7 +25,12 @@
 #include <sys/ioctl.h>
 #endif
 
+#include <map>
+#include <string>
+#include <vector>
+
 #include <android-base/file.h>
+#include <android-base/stringprintf.h>
 #include <ext4_utils/ext4_utils.h>
 #include <openssl/sha.h>
 
@@ -135,6 +141,24 @@
     return list;
 }
 
+const LpMetadataPartition* FindPartition(const LpMetadata& metadata, const std::string& name) {
+    for (const auto& partition : metadata.partitions) {
+        if (GetPartitionName(partition) == name) {
+            return &partition;
+        }
+    }
+    return nullptr;
+}
+
+uint64_t GetPartitionSize(const LpMetadata& metadata, const LpMetadataPartition& partition) {
+    uint64_t total_size = 0;
+    for (uint32_t i = 0; i < partition.num_extents; i++) {
+        const auto& extent = metadata.extents[partition.first_extent_index + i];
+        total_size += extent.num_sectors * LP_SECTOR_SIZE;
+    }
+    return total_size;
+}
+
 std::string GetPartitionSlotSuffix(const std::string& partition_name) {
     if (partition_name.size() <= 2) {
         return "";
@@ -164,6 +188,14 @@
     return true;
 }
 
+bool UpdatePartitionName(LpMetadataPartition* partition, const std::string& name) {
+    if (name.size() > sizeof(partition->name)) {
+        return false;
+    }
+    strncpy(partition->name, name.c_str(), sizeof(partition->name));
+    return true;
+}
+
 bool SetBlockReadonly(int fd, bool readonly) {
 #if defined(__linux__)
     int val = readonly;
@@ -175,9 +207,9 @@
 #endif
 }
 
-base::unique_fd GetControlFileOrOpen(const char* path, int flags) {
+base::unique_fd GetControlFileOrOpen(std::string_view path, int flags) {
 #if defined(__ANDROID__)
-    int fd = android_get_control_file(path);
+    int fd = android_get_control_file(path.data());
     if (fd >= 0) {
         int newfd = TEMP_FAILURE_RETRY(dup(fd));
         if (newfd >= 0) {
@@ -186,7 +218,110 @@
         PERROR << "Cannot dup fd for already controlled file: " << path << ", reopening...";
     }
 #endif
-    return base::unique_fd(open(path, flags));
+    return base::unique_fd(open(path.data(), flags));
+}
+
+bool UpdateMetadataForInPlaceSnapshot(LpMetadata* metadata, uint32_t source_slot_number,
+                                      uint32_t target_slot_number) {
+    std::string source_slot_suffix = SlotSuffixForSlotNumber(source_slot_number);
+    std::string target_slot_suffix = SlotSuffixForSlotNumber(target_slot_number);
+
+    // There can be leftover groups with target suffix on retrofit devices.
+    // They are useless now, so delete.
+    std::vector<LpMetadataPartitionGroup*> new_group_ptrs;
+    for (auto& group : metadata->groups) {
+        std::string group_name = GetPartitionGroupName(group);
+        std::string slot_suffix = GetPartitionSlotSuffix(group_name);
+        // Don't add groups with target slot suffix.
+        if (slot_suffix == target_slot_suffix) continue;
+        // Replace source slot suffix with target slot suffix.
+        if (slot_suffix == source_slot_suffix) {
+            std::string new_name = group_name.substr(0, group_name.size() - slot_suffix.size()) +
+                                   target_slot_suffix;
+            if (!UpdatePartitionGroupName(&group, new_name)) {
+                LERROR << "Group name too long: " << new_name;
+                return false;
+            }
+        }
+        new_group_ptrs.push_back(&group);
+    }
+
+    std::vector<LpMetadataPartition*> new_partition_ptrs;
+    for (auto& partition : metadata->partitions) {
+        std::string partition_name = GetPartitionName(partition);
+        std::string slot_suffix = GetPartitionSlotSuffix(partition_name);
+        // Don't add partitions with target slot suffix.
+        if (slot_suffix == target_slot_suffix) continue;
+        // Replace source slot suffix with target slot suffix.
+        if (slot_suffix == source_slot_suffix) {
+            std::string new_name =
+                    partition_name.substr(0, partition_name.size() - slot_suffix.size()) +
+                    target_slot_suffix;
+            if (!UpdatePartitionName(&partition, new_name)) {
+                LERROR << "Partition name too long: " << new_name;
+                return false;
+            }
+        }
+        // Update group index.
+        auto it = std::find(new_group_ptrs.begin(), new_group_ptrs.end(),
+                            &metadata->groups[partition.group_index]);
+        if (it == new_group_ptrs.end()) {
+            LWARN << "Removing partition " << partition_name << " from group "
+                  << GetPartitionGroupName(metadata->groups[partition.group_index])
+                  << "; this partition should not belong to this group!";
+            continue;  // not adding to new_partition_ptrs
+        }
+        partition.attributes |= LP_PARTITION_ATTR_UPDATED;
+        partition.group_index = std::distance(new_group_ptrs.begin(), it);
+        new_partition_ptrs.push_back(&partition);
+    }
+
+    std::vector<LpMetadataPartition> new_partitions;
+    for (auto* p : new_partition_ptrs) new_partitions.emplace_back(std::move(*p));
+    metadata->partitions = std::move(new_partitions);
+
+    std::vector<LpMetadataPartitionGroup> new_groups;
+    for (auto* g : new_group_ptrs) new_groups.emplace_back(std::move(*g));
+    metadata->groups = std::move(new_groups);
+
+    return true;
+}
+
+inline std::string ToHexString(uint64_t value) {
+    return android::base::StringPrintf("0x%" PRIx64, value);
+}
+
+void SetMetadataHeaderV0(LpMetadata* metadata) {
+    if (metadata->header.minor_version <= LP_METADATA_MINOR_VERSION_MIN) {
+        return;
+    }
+    LINFO << "Forcefully setting metadata header version " << LP_METADATA_MAJOR_VERSION << "."
+          << metadata->header.minor_version << " to " << LP_METADATA_MAJOR_VERSION << "."
+          << LP_METADATA_MINOR_VERSION_MIN;
+    metadata->header.minor_version = LP_METADATA_MINOR_VERSION_MIN;
+    metadata->header.header_size = sizeof(LpMetadataHeaderV1_0);
+
+    // Retrofit Virtual A/B devices should have version 10.1, so flags shouldn't be set.
+    // Warn if this is the case, but zero it out anyways.
+    if (metadata->header.flags) {
+        LWARN << "Zeroing unexpected flags: " << ToHexString(metadata->header.flags);
+    }
+
+    // Zero out all fields beyond LpMetadataHeaderV0.
+    static_assert(sizeof(metadata->header) > sizeof(LpMetadataHeaderV1_0));
+    memset(reinterpret_cast<uint8_t*>(&metadata->header) + sizeof(LpMetadataHeaderV1_0), 0,
+           sizeof(metadata->header) - sizeof(LpMetadataHeaderV1_0));
+
+    // Clear partition attributes unknown to V0.
+    // On retrofit Virtual A/B devices, UPDATED flag may be set, so only log info here.
+    for (auto& partition : metadata->partitions) {
+        if (partition.attributes & ~LP_PARTITION_ATTRIBUTE_MASK_V0) {
+            LINFO << "Clearing " << GetPartitionName(partition)
+                  << " partition attribute: " << ToHexString(partition.attributes);
+        }
+
+        partition.attributes &= LP_PARTITION_ATTRIBUTE_MASK_V0;
+    }
 }
 
 }  // namespace fs_mgr
diff --git a/fs_mgr/liblp/utility.h b/fs_mgr/liblp/utility.h
index 96f1717..1d86edd 100644
--- a/fs_mgr/liblp/utility.h
+++ b/fs_mgr/liblp/utility.h
@@ -21,6 +21,9 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <string>
+#include <string_view>
+
 #include <android-base/logging.h>
 #include <android-base/unique_fd.h>
 
@@ -89,11 +92,20 @@
 // Update names from C++ strings.
 bool UpdateBlockDevicePartitionName(LpMetadataBlockDevice* device, const std::string& name);
 bool UpdatePartitionGroupName(LpMetadataPartitionGroup* group, const std::string& name);
+bool UpdatePartitionName(LpMetadataPartition* partition, const std::string& name);
 
 // Call BLKROSET ioctl on fd so that fd is readonly / read-writable.
 bool SetBlockReadonly(int fd, bool readonly);
 
-::android::base::unique_fd GetControlFileOrOpen(const char* path, int flags);
+::android::base::unique_fd GetControlFileOrOpen(std::string_view path, int flags);
+
+// For Virtual A/B updates, modify |metadata| so that it can be written to |target_slot_number|.
+bool UpdateMetadataForInPlaceSnapshot(LpMetadata* metadata, uint32_t source_slot_number,
+                                      uint32_t target_slot_number);
+
+// Forcefully set metadata header version to 1.0, clearing any incompatible flags and attributes
+// so that when downgrading to a build with liblp V0, the device still boots.
+void SetMetadataHeaderV0(LpMetadata* metadata);
 
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/liblp/utility_test.cpp b/fs_mgr/liblp/utility_test.cpp
index 15f7fff..cac3989 100644
--- a/fs_mgr/liblp/utility_test.cpp
+++ b/fs_mgr/liblp/utility_test.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <gtest/gtest.h>
+#include <liblp/builder.h>
 #include <liblp/liblp.h>
 
 #include "utility.h"
@@ -75,3 +76,81 @@
     EXPECT_EQ(GetPartitionSlotSuffix("system_a"), "_a");
     EXPECT_EQ(GetPartitionSlotSuffix("system_b"), "_b");
 }
+
+namespace android {
+namespace fs_mgr {
+// Equality comparison for testing. In reality, equality of device_index doesn't
+// necessary mean equality of the block device.
+bool operator==(const LinearExtent& l, const LinearExtent& r) {
+    return l.device_index() == r.device_index() && l.physical_sector() == r.physical_sector() &&
+           l.end_sector() == r.end_sector();
+}
+}  // namespace fs_mgr
+}  // namespace android
+
+static std::vector<LinearExtent> GetPartitionExtents(Partition* p) {
+    std::vector<LinearExtent> extents;
+    for (auto&& extent : p->extents()) {
+        auto linear_extent = extent->AsLinearExtent();
+        if (!linear_extent) return {};
+        extents.push_back(*linear_extent);
+    }
+    return extents;
+}
+
+TEST(liblp, UpdateMetadataForInPlaceSnapshot) {
+    using std::unique_ptr;
+
+    unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(1024 * 1024, 1024, 2);
+    ASSERT_NE(builder, nullptr);
+
+    ASSERT_TRUE(builder->AddGroup("group_a", 256 * 1024));
+    Partition* system_a = builder->AddPartition("system_a", "group_a", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(system_a, nullptr);
+    ASSERT_TRUE(builder->ResizePartition(system_a, 40 * 1024));
+    Partition* vendor_a = builder->AddPartition("vendor_a", "group_a", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(vendor_a, nullptr);
+    ASSERT_TRUE(builder->ResizePartition(vendor_a, 20 * 1024));
+
+    ASSERT_TRUE(builder->AddGroup("group_b", 258 * 1024));
+    Partition* system_b = builder->AddPartition("system_b", "group_b", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(system_b, nullptr);
+    ASSERT_TRUE(builder->ResizePartition(system_b, 36 * 1024));
+    Partition* vendor_b = builder->AddPartition("vendor_b", "group_b", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(vendor_b, nullptr);
+    ASSERT_TRUE(builder->ResizePartition(vendor_b, 32 * 1024));
+
+    auto system_a_extents = GetPartitionExtents(system_a);
+    ASSERT_FALSE(system_a_extents.empty());
+
+    auto vendor_a_extents = GetPartitionExtents(vendor_a);
+    ASSERT_FALSE(vendor_a_extents.empty());
+
+    auto metadata = builder->Export();
+    ASSERT_NE(nullptr, metadata);
+
+    ASSERT_TRUE(UpdateMetadataForInPlaceSnapshot(metadata.get(), 0, 1));
+
+    auto new_builder = MetadataBuilder::New(*metadata);
+    ASSERT_NE(nullptr, new_builder);
+
+    EXPECT_EQ(nullptr, new_builder->FindGroup("group_a"));
+    EXPECT_EQ(nullptr, new_builder->FindPartition("system_a"));
+    EXPECT_EQ(nullptr, new_builder->FindPartition("vendor_a"));
+
+    auto group_b = new_builder->FindGroup("group_b");
+    ASSERT_NE(nullptr, group_b);
+    ASSERT_EQ(256 * 1024, group_b->maximum_size());
+
+    auto new_system_b = new_builder->FindPartition("system_b");
+    ASSERT_NE(nullptr, new_system_b);
+    EXPECT_EQ(40 * 1024, new_system_b->size());
+    auto new_system_b_extents = GetPartitionExtents(new_system_b);
+    EXPECT_EQ(system_a_extents, new_system_b_extents);
+
+    auto new_vendor_b = new_builder->FindPartition("vendor_b");
+    ASSERT_NE(nullptr, new_vendor_b);
+    EXPECT_EQ(20 * 1024, new_vendor_b->size());
+    auto new_vendor_b_extents = GetPartitionExtents(new_vendor_b);
+    EXPECT_EQ(vendor_a_extents, new_vendor_b_extents);
+}
diff --git a/fs_mgr/liblp/writer.cpp b/fs_mgr/liblp/writer.cpp
index bffcb7e..8bf1ee9 100644
--- a/fs_mgr/liblp/writer.cpp
+++ b/fs_mgr/liblp/writer.cpp
@@ -17,6 +17,7 @@
 #include "writer.h"
 
 #include <inttypes.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <string>
@@ -73,17 +74,18 @@
 
     // Compute header checksum.
     memset(header.header_checksum, 0, sizeof(header.header_checksum));
-    SHA256(&header, sizeof(header), header.header_checksum);
+    SHA256(&header, header.header_size, header.header_checksum);
 
     std::string header_blob =
-            std::string(reinterpret_cast<const char*>(&metadata.header), sizeof(metadata.header));
+            std::string(reinterpret_cast<const char*>(&header), header.header_size);
     return header_blob + tables;
 }
 
 // Perform sanity checks so we don't accidentally overwrite valid metadata
 // with potentially invalid metadata, or random partition data with metadata.
-static bool ValidateAndSerializeMetadata(const IPartitionOpener& opener, const LpMetadata& metadata,
-                                         const std::string& slot_suffix, std::string* blob) {
+static bool ValidateAndSerializeMetadata([[maybe_unused]] const IPartitionOpener& opener,
+                                         const LpMetadata& metadata, const std::string& slot_suffix,
+                                         std::string* blob) {
     const LpMetadataGeometry& geometry = metadata.geometry;
 
     *blob = SerializeMetadata(metadata);
@@ -127,6 +129,10 @@
                    << block_device.first_logical_sector << " for size " << block_device.size;
             return false;
         }
+
+        // When flashing on the device, check partition sizes. Don't do this on
+        // the host since there is no way to verify.
+#if defined(__ANDROID__)
         BlockDeviceInfo info;
         if (!opener.GetInfo(partition_name, &info)) {
             PERROR << partition_name << ": ioctl";
@@ -137,6 +143,7 @@
                    << block_device.size << ", got " << info.size << ")";
             return false;
         }
+#endif
     }
 
     // Make sure all partition entries reference valid extents.
diff --git a/fs_mgr/libsnapshot/Android.bp b/fs_mgr/libsnapshot/Android.bp
new file mode 100644
index 0000000..c118788
--- /dev/null
+++ b/fs_mgr/libsnapshot/Android.bp
@@ -0,0 +1,227 @@
+//
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_defaults {
+    name: "libsnapshot_defaults",
+    defaults: ["fs_mgr_defaults"],
+    cflags: [
+        "-D_FILE_OFFSET_BITS=64",
+        "-Wall",
+        "-Werror",
+    ],
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "liblog",
+    ],
+    static_libs: [
+        "libdm",
+        "libfstab",
+        "update_metadata-protos",
+    ],
+    whole_static_libs: [
+        "libext2_uuid",
+        "libext4_utils",
+        "libfstab",
+    ],
+    header_libs: [
+        "libfiemap_headers",
+    ],
+    export_static_lib_headers: [
+        "update_metadata-protos",
+    ],
+    export_header_lib_headers: [
+        "libfiemap_headers",
+    ],
+    export_include_dirs: ["include"],
+    proto: {
+        type: "lite",
+        export_proto_headers: true,
+        canonical_path_from_root: false,
+    },
+}
+
+cc_defaults {
+    name: "libsnapshot_hal_deps",
+    cflags: [
+        "-DLIBSNAPSHOT_USE_HAL",
+    ],
+    shared_libs: [
+        "android.hardware.boot@1.0",
+        "android.hardware.boot@1.1",
+    ],
+}
+
+filegroup {
+    name: "libsnapshot_sources",
+    srcs: [
+        "android/snapshot/snapshot.proto",
+        "device_info.cpp",
+        "snapshot.cpp",
+        "snapshot_stats.cpp",
+        "snapshot_metadata_updater.cpp",
+        "partition_cow_creator.cpp",
+        "return.cpp",
+        "utility.cpp",
+    ],
+}
+
+cc_library_headers {
+    name: "libsnapshot_headers",
+    recovery_available: true,
+    defaults: ["libsnapshot_defaults"],
+}
+
+cc_library_static {
+    name: "libsnapshot",
+    defaults: [
+        "libsnapshot_defaults",
+        "libsnapshot_hal_deps",
+    ],
+    srcs: [":libsnapshot_sources"],
+    static_libs: [
+        "libfs_mgr_binder"
+    ],
+}
+
+cc_library_static {
+    name: "libsnapshot_init",
+    defaults: ["libsnapshot_defaults"],
+    srcs: [":libsnapshot_sources"],
+    recovery_available: true,
+    static_libs: [
+        "libfs_mgr",
+    ],
+}
+
+cc_library_static {
+    name: "libsnapshot_nobinder",
+    defaults: [
+        "libsnapshot_defaults",
+        "libsnapshot_hal_deps",
+    ],
+    srcs: [":libsnapshot_sources"],
+    recovery_available: true,
+    static_libs: [
+        "libfs_mgr",
+    ],
+}
+
+cc_library_static {
+    name: "libsnapshot_test_helpers",
+    defaults: ["libsnapshot_defaults"],
+    export_include_dirs: [
+        "include_test",
+    ],
+    srcs: [
+        "android/snapshot/snapshot.proto",
+        "test_helpers.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.boot@1.1",
+        "libcrypto",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.boot@1.1",
+    ],
+    header_libs: [
+        "libstorage_literals_headers",
+    ],
+    export_header_lib_headers: [
+        "libstorage_literals_headers",
+    ],
+    static_libs: [
+        "libfs_mgr",
+        "libgmock",
+        "libgtest",
+    ],
+}
+
+cc_defaults {
+    name: "libsnapshot_test_defaults",
+    defaults: ["libsnapshot_defaults"],
+    srcs: [
+        "partition_cow_creator_test.cpp",
+        "snapshot_metadata_updater_test.cpp",
+        "snapshot_test.cpp",
+    ],
+    shared_libs: [
+        "libbinder",
+        "libcrypto",
+        "libhidlbase",
+        "libprotobuf-cpp-lite",
+        "libutils",
+        "libz",
+    ],
+    static_libs: [
+        "android.hardware.boot@1.0",
+        "android.hardware.boot@1.1",
+        "libfs_mgr",
+        "libgsi",
+        "libgmock",
+        "liblp",
+        "libsnapshot",
+        "libsnapshot_test_helpers",
+        "libsparse",
+    ],
+    header_libs: [
+        "libstorage_literals_headers",
+    ],
+    test_suites: [
+        "vts",
+        "device-tests"
+    ],
+    test_min_api_level: 29,
+    auto_gen_config: true,
+    require_root: true,
+}
+
+cc_test {
+    name: "vts_libsnapshot_test",
+    defaults: ["libsnapshot_test_defaults"],
+}
+
+// For VTS 10
+vts_config {
+    name: "VtsLibsnapshotTest",
+    test_config: "VtsLibsnapshotTest.xml"
+}
+
+cc_binary {
+    name: "snapshotctl",
+    srcs: [
+        "snapshotctl.cpp",
+    ],
+    static_libs: [
+        "libfstab",
+        "libsnapshot",
+    ],
+    shared_libs: [
+        "android.hardware.boot@1.0",
+        "android.hardware.boot@1.1",
+        "libbase",
+        "libbinder",
+        "libext2_uuid",
+        "libext4_utils",
+        "libfs_mgr_binder",
+        "libhidlbase",
+        "liblog",
+        "liblp",
+        "libprotobuf-cpp-lite",
+        "libstatslog",
+        "libutils",
+    ],
+}
diff --git a/fs_mgr/libsnapshot/OWNERS b/fs_mgr/libsnapshot/OWNERS
new file mode 100644
index 0000000..801c446
--- /dev/null
+++ b/fs_mgr/libsnapshot/OWNERS
@@ -0,0 +1,3 @@
+balsini@google.com
+dvander@google.com
+elsk@google.com
diff --git a/fs_mgr/libsnapshot/VtsLibsnapshotTest.xml b/fs_mgr/libsnapshot/VtsLibsnapshotTest.xml
new file mode 100644
index 0000000..b53b51e
--- /dev/null
+++ b/fs_mgr/libsnapshot/VtsLibsnapshotTest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Config for VTS VtsLibsnapshotTest">
+    <option name="config-descriptor:metadata" key="plan" value="vts-kernel"/>
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.VtsFilePusher">
+        <option name="abort-on-push-failure" value="false"/>
+        <option name="push-group" value="HostDrivenTest.push"/>
+    </target_preparer>
+    <test class="com.android.tradefed.testtype.VtsMultiDeviceTest">
+        <option name="test-module-name" value="VtsLibsnapshotTest"/>
+        <option name="binary-test-source" value="_32bit::DATA/nativetest/vts_libsnapshot_test/vts_libsnapshot_test"/>
+        <option name="binary-test-source" value="_64bit::DATA/nativetest64/vts_libsnapshot_test/vts_libsnapshot_test"/>
+        <option name="binary-test-type" value="gtest"/>
+        <option name="test-timeout" value="5m"/>
+    </test>
+</configuration>
diff --git a/fs_mgr/libsnapshot/android/snapshot/snapshot.proto b/fs_mgr/libsnapshot/android/snapshot/snapshot.proto
new file mode 100644
index 0000000..0328132
--- /dev/null
+++ b/fs_mgr/libsnapshot/android/snapshot/snapshot.proto
@@ -0,0 +1,146 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+package android.snapshot;
+
+option optimize_for = LITE_RUNTIME;
+
+// Next: 4
+enum SnapshotState {
+    // No snapshot is found.
+    NONE = 0;
+
+    // The snapshot has been created and possibly written to. Rollbacks are
+    // possible by destroying the snapshot.
+    CREATED = 1;
+
+    // Changes are being merged. No rollbacks are possible beyond this point.
+    MERGING = 2;
+
+    // Changes have been merged, Future reboots may map the base device
+    // directly.
+    MERGE_COMPLETED = 3;
+}
+
+// Next: 9
+message SnapshotStatus {
+    // Name of the snapshot. This is usually the name of the snapshotted
+    // logical partition; for example, "system_b".
+    string name = 1;
+
+    SnapshotState state = 2;
+
+    // Size of the full (base) device.
+    uint64 device_size = 3;
+
+    // Size of the snapshot. This is the sum of lengths of ranges in the base
+    // device that needs to be snapshotted during the update.
+    // This must be less than or equal to |device_size|.
+    // This value is 0 if no snapshot is needed for this device because
+    // no changes
+    uint64 snapshot_size = 4;
+
+    // Size of the "COW partition". A COW partition is a special logical
+    // partition represented in the super partition metadata. This partition and
+    // the "COW image" form the "COW device" that supports the snapshot device.
+    //
+    // When SnapshotManager creates a COW device, it first searches for unused
+    // blocks in the super partition, and use those before creating the COW
+    // image if the COW partition is not big enough.
+    //
+    // This value is 0 if no space in super is left for the COW partition.
+    // |cow_partition_size + cow_file_size| must not be zero if |snapshot_size|
+    // is non-zero.
+    uint64 cow_partition_size = 5;
+
+    // Size of the "COW file", or "COW image". A COW file / image is created
+    // when the "COW partition" is not big enough to store changes to the
+    // snapshot device.
+    //
+    // This value is 0 if |cow_partition_size| is big enough to hold all changes
+    // to the snapshot device.
+    uint64 cow_file_size = 6;
+
+    // Sectors allocated for the COW device. Recording this value right after
+    // the update and before the merge allows us to infer the progress of the
+    // merge process.
+    // This is non-zero when |state| == MERGING or MERGE_COMPLETED.
+    uint64 sectors_allocated = 7;
+
+    // Metadata sectors allocated for the COW device. Recording this value right
+    // before the update and before the merge allows us to infer the progress of
+    // the merge process.
+    // This is non-zero when |state| == MERGING or MERGE_COMPLETED.
+    uint64 metadata_sectors = 8;
+}
+
+// Next: 8
+enum UpdateState {
+    // No update or merge is in progress.
+    None = 0;
+
+    // An update is applying; snapshots may already exist.
+    Initiated = 1;
+
+    // An update is pending, but has not been successfully booted yet.
+    Unverified = 2;
+
+    // The kernel is merging in the background.
+    Merging = 3;
+
+    // Post-merge cleanup steps could not be completed due to a transient
+    // error, but the next reboot will finish any pending operations.
+    MergeNeedsReboot = 4;
+
+    // Merging is complete, and needs to be acknowledged.
+    MergeCompleted = 5;
+
+    // Merging failed due to an unrecoverable error.
+    MergeFailed = 6;
+
+    // The update was implicitly cancelled, either by a rollback or a flash
+    // operation via fastboot. This state can only be returned by WaitForMerge.
+    Cancelled = 7;
+};
+
+// Next: 5
+message SnapshotUpdateStatus {
+    UpdateState state = 1;
+
+    // Total number of sectors allocated in the COW files before performing the
+    // merge operation.  This field is used to keep track of the total number
+    // of sectors modified to monitor and show the progress of the merge during
+    // an update.
+    uint64 sectors_allocated = 2;
+
+    // Total number of sectors of all the snapshot devices.
+    uint64 total_sectors = 3;
+
+    // Sectors allocated for metadata in all the snapshot devices.
+    uint64 metadata_sectors = 4;
+}
+
+// Next: 4
+message SnapshotMergeReport {
+    // Status of the update after the merge attempts.
+    UpdateState state = 1;
+
+    // Number of reboots that occurred after issuing and before completeing the
+    // merge of all the snapshot devices.
+    int32 resume_count = 2;
+
+    // Total size of all the COW images before the update.
+    uint64 cow_file_size = 3;
+}
diff --git a/fs_mgr/libsnapshot/device_info.cpp b/fs_mgr/libsnapshot/device_info.cpp
new file mode 100644
index 0000000..0e90100
--- /dev/null
+++ b/fs_mgr/libsnapshot/device_info.cpp
@@ -0,0 +1,124 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "device_info.h"
+
+#include <android-base/logging.h>
+#include <fs_mgr.h>
+#include <fs_mgr_overlayfs.h>
+
+namespace android {
+namespace snapshot {
+
+#ifdef LIBSNAPSHOT_USE_HAL
+using android::hardware::boot::V1_0::BoolResult;
+using android::hardware::boot::V1_0::CommandResult;
+#endif
+
+using namespace std::string_literals;
+
+#ifdef __ANDROID_RECOVERY__
+constexpr bool kIsRecovery = true;
+#else
+constexpr bool kIsRecovery = false;
+#endif
+
+std::string DeviceInfo::GetGsidDir() const {
+    return "ota"s;
+}
+
+std::string DeviceInfo::GetMetadataDir() const {
+    return "/metadata/ota"s;
+}
+
+std::string DeviceInfo::GetSlotSuffix() const {
+    return fs_mgr_get_slot_suffix();
+}
+
+std::string DeviceInfo::GetOtherSlotSuffix() const {
+    return fs_mgr_get_other_slot_suffix();
+}
+
+const android::fs_mgr::IPartitionOpener& DeviceInfo::GetPartitionOpener() const {
+    return opener_;
+}
+
+std::string DeviceInfo::GetSuperDevice(uint32_t slot) const {
+    return fs_mgr_get_super_partition_name(slot);
+}
+
+bool DeviceInfo::IsOverlayfsSetup() const {
+    return fs_mgr_overlayfs_is_setup();
+}
+
+#ifdef LIBSNAPSHOT_USE_HAL
+bool DeviceInfo::EnsureBootHal() {
+    if (!boot_control_) {
+        auto hal = android::hardware::boot::V1_0::IBootControl::getService();
+        if (!hal) {
+            LOG(ERROR) << "Could not find IBootControl HAL";
+            return false;
+        }
+        boot_control_ = android::hardware::boot::V1_1::IBootControl::castFrom(hal);
+        if (!boot_control_) {
+            LOG(ERROR) << "Could not find IBootControl 1.1 HAL";
+            return false;
+        }
+    }
+    return true;
+}
+#endif
+
+bool DeviceInfo::SetBootControlMergeStatus([[maybe_unused]] MergeStatus status) {
+#ifdef LIBSNAPSHOT_USE_HAL
+    if (!EnsureBootHal()) {
+        return false;
+    }
+    if (!boot_control_->setSnapshotMergeStatus(status)) {
+        LOG(ERROR) << "Unable to set the snapshot merge status";
+        return false;
+    }
+    return true;
+#else
+    LOG(ERROR) << "HAL support not enabled.";
+    return false;
+#endif
+}
+
+bool DeviceInfo::IsRecovery() const {
+    return kIsRecovery;
+}
+
+bool DeviceInfo::SetSlotAsUnbootable([[maybe_unused]] unsigned int slot) {
+#ifdef LIBSNAPSHOT_USE_HAL
+    if (!EnsureBootHal()) {
+        return false;
+    }
+
+    CommandResult result = {};
+    auto cb = [&](CommandResult r) -> void { result = r; };
+    boot_control_->setSlotAsUnbootable(slot, cb);
+    if (!result.success) {
+        LOG(ERROR) << "Error setting slot " << slot << " unbootable: " << result.errMsg;
+        return false;
+    }
+    return true;
+#else
+    LOG(ERROR) << "HAL support not enabled.";
+    return false;
+#endif
+}
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/device_info.h b/fs_mgr/libsnapshot/device_info.h
new file mode 100644
index 0000000..d8d3d91
--- /dev/null
+++ b/fs_mgr/libsnapshot/device_info.h
@@ -0,0 +1,53 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <string>
+
+#ifdef LIBSNAPSHOT_USE_HAL
+#include <android/hardware/boot/1.1/IBootControl.h>
+#endif
+#include <liblp/partition_opener.h>
+#include <libsnapshot/snapshot.h>
+
+namespace android {
+namespace snapshot {
+
+class DeviceInfo final : public SnapshotManager::IDeviceInfo {
+    using MergeStatus = android::hardware::boot::V1_1::MergeStatus;
+
+  public:
+    std::string GetGsidDir() const override;
+    std::string GetMetadataDir() const override;
+    std::string GetSlotSuffix() const override;
+    std::string GetOtherSlotSuffix() const override;
+    const android::fs_mgr::IPartitionOpener& GetPartitionOpener() const override;
+    std::string GetSuperDevice(uint32_t slot) const override;
+    bool IsOverlayfsSetup() const override;
+    bool SetBootControlMergeStatus(MergeStatus status) override;
+    bool SetSlotAsUnbootable(unsigned int slot) override;
+    bool IsRecovery() const override;
+
+  private:
+    bool EnsureBootHal();
+
+    android::fs_mgr::PartitionOpener opener_;
+#ifdef LIBSNAPSHOT_USE_HAL
+    android::sp<android::hardware::boot::V1_1::IBootControl> boot_control_;
+#endif
+};
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/dm_snapshot_internals.h b/fs_mgr/libsnapshot/dm_snapshot_internals.h
new file mode 100644
index 0000000..fef256d
--- /dev/null
+++ b/fs_mgr/libsnapshot/dm_snapshot_internals.h
@@ -0,0 +1,135 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <stdint.h>
+
+#include <vector>
+
+namespace android {
+namespace snapshot {
+
+class DmSnapCowSizeCalculator {
+  public:
+    DmSnapCowSizeCalculator(unsigned int sector_bytes, unsigned int chunk_sectors)
+        : sector_bytes_(sector_bytes),
+          chunk_sectors_(chunk_sectors),
+          exceptions_per_chunk(chunk_sectors_ * sector_bytes_ / (64 * 2 / 8)) {}
+
+    void WriteByte(uint64_t address) { WriteSector(address / sector_bytes_); }
+    void WriteSector(uint64_t sector) { WriteChunk(sector / chunk_sectors_); }
+    void WriteChunk(uint64_t chunk_id) {
+        if (modified_chunks_.size() <= chunk_id) {
+            modified_chunks_.resize(chunk_id + 1, false);
+        }
+        modified_chunks_[chunk_id] = true;
+    }
+
+    uint64_t cow_size_bytes() const { return cow_size_sectors() * sector_bytes_; }
+    uint64_t cow_size_sectors() const { return cow_size_chunks() * chunk_sectors_; }
+
+    /*
+     * The COW device has a precise internal structure as follows:
+     *
+     * - header (1 chunk)
+     * - #0 map and chunks
+     *   - map (1 chunk)
+     *   - chunks addressable by previous map (exceptions_per_chunk)
+     * - #1 map and chunks
+     *   - map (1 chunk)
+     *   - chunks addressable by previous map (exceptions_per_chunk)
+     * ...
+     * - #n: map and chunks
+     *   - map (1 chunk)
+     *   - chunks addressable by previous map (exceptions_per_chunk)
+     * - 1 extra chunk
+     */
+    uint64_t cow_size_chunks() const {
+        uint64_t modified_chunks_count = 0;
+        uint64_t cow_chunks = 0;
+
+        for (const auto& c : modified_chunks_) {
+            if (c) {
+                ++modified_chunks_count;
+            }
+        }
+
+        /* disk header + padding = 1 chunk */
+        cow_chunks += 1;
+
+        /* snapshot modified chunks */
+        cow_chunks += modified_chunks_count;
+
+        /* snapshot chunks index metadata */
+        cow_chunks += 1 + modified_chunks_count / exceptions_per_chunk;
+
+        return cow_chunks;
+    }
+
+  private:
+    /*
+     * Size of each sector in bytes.
+     */
+    const uint64_t sector_bytes_;
+
+    /*
+     * Size of each chunk in sectors.
+     */
+    const uint64_t chunk_sectors_;
+
+    /*
+     * The COW device stores tables to map the modified chunks. Each table
+     * has the size of exactly 1 chunk.
+     * Each row of the table (also called exception in the kernel) contains two
+     * 64 bit indices to identify the corresponding chunk, and this 128 bit row
+     * size is a constant.
+     * The number of exceptions that each table can contain determines the
+     * number of data chunks that separate two consecutive tables. This value
+     * is then fundamental to compute the space overhead introduced by the
+     * tables in COW devices.
+     */
+    const uint64_t exceptions_per_chunk;
+
+    /*
+     * |modified_chunks_| is a container that keeps trace of the modified
+     * chunks.
+     * Multiple options were considered when choosing the most appropriate data
+     * structure for this container. Here follows a summary of why vector<bool>
+     * has been chosen, taking as a reference a snapshot partition of 4 GiB and
+     * chunk size of 4 KiB.
+     * - std::set<uint64_t> is very space-efficient for a small number of
+     *   operations, but if the whole snapshot is changed, it would need to
+     *   store
+     *     4 GiB / 4 KiB * (64 bit / 8) = 8 MiB
+     *   just for the data, plus the additional data overhead for the red-black
+     *   tree used for data sorting (if each rb-tree element stores 3 address
+     *   and the word-aligne color, the total size grows to 32 MiB).
+     * - std::bitset<N> is not a good fit because requires a priori knowledge,
+     *   at compile time, of the bitset size.
+     * - std::vector<bool> is a special case of vector, which uses a data
+     *   compression that allows reducing the space utilization of each element
+     *   to 1 bit. In detail, this data structure is composed of a resizable
+     *   array of words, each of them representing a bitmap. On a 64 bit
+     *   device, modifying the whole 4 GiB snapshot grows this container up to
+     *     4 * GiB / 4 KiB / 64 = 64 KiB
+     *   that, even if is the same space requirement to change a single byte at
+     *   the highest address of the snapshot, is a very affordable space
+     *   requirement.
+     */
+    std::vector<bool> modified_chunks_;
+};
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/auto_device.h b/fs_mgr/libsnapshot/include/libsnapshot/auto_device.h
new file mode 100644
index 0000000..73450db
--- /dev/null
+++ b/fs_mgr/libsnapshot/include/libsnapshot/auto_device.h
@@ -0,0 +1,42 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <string>
+
+#include <android-base/macros.h>
+
+namespace android {
+namespace snapshot {
+
+// An abstract "device" that will be cleaned up (unmapped, unmounted, etc.) upon
+// destruction.
+struct AutoDevice {
+    virtual ~AutoDevice(){};
+    void Release();
+
+    bool HasDevice() const { return !name_.empty(); }
+
+  protected:
+    AutoDevice(const std::string& name) : name_(name) {}
+    std::string name_;
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(AutoDevice);
+    AutoDevice(AutoDevice&& other) = delete;
+};
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/return.h b/fs_mgr/libsnapshot/include/libsnapshot/return.h
new file mode 100644
index 0000000..dedc445
--- /dev/null
+++ b/fs_mgr/libsnapshot/include/libsnapshot/return.h
@@ -0,0 +1,59 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <stdint.h>
+#include <string.h>
+
+#include <libfiemap/fiemap_status.h>
+
+namespace android::snapshot {
+
+// SnapshotManager functions return either bool or Return objects. "Return" types provides
+// more information about the reason of the failure.
+class Return {
+    using FiemapStatus = android::fiemap::FiemapStatus;
+
+  public:
+    enum class ErrorCode : int32_t {
+        SUCCESS = static_cast<int32_t>(FiemapStatus::ErrorCode::SUCCESS),
+        ERROR = static_cast<int32_t>(FiemapStatus::ErrorCode::ERROR),
+        NO_SPACE = static_cast<int32_t>(FiemapStatus::ErrorCode::NO_SPACE),
+    };
+    ErrorCode error_code() const { return error_code_; }
+    bool is_ok() const { return error_code() == ErrorCode::SUCCESS; }
+    operator bool() const { return is_ok(); }
+    // Total required size on /userdata.
+    uint64_t required_size() const { return required_size_; }
+    std::string string() const;
+
+    static Return Ok() { return Return(ErrorCode::SUCCESS); }
+    static Return Error() { return Return(ErrorCode::ERROR); }
+    static Return NoSpace(uint64_t size) { return Return(ErrorCode::NO_SPACE, size); }
+    // Does not set required_size_ properly even when status.error_code() == NO_SPACE.
+    explicit Return(const FiemapStatus& status)
+        : error_code_(FromFiemapStatusErrorCode(status.error_code())), required_size_(0) {}
+
+  private:
+    ErrorCode error_code_;
+    uint64_t required_size_;
+    Return(ErrorCode error_code, uint64_t required_size = 0)
+        : error_code_(error_code), required_size_(required_size) {}
+
+    // FiemapStatus::ErrorCode -> ErrorCode
+    static ErrorCode FromFiemapStatusErrorCode(FiemapStatus::ErrorCode error_code);
+};
+
+}  // namespace android::snapshot
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h b/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
new file mode 100644
index 0000000..b207978
--- /dev/null
+++ b/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
@@ -0,0 +1,561 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <stdint.h>
+
+#include <chrono>
+#include <map>
+#include <memory>
+#include <optional>
+#include <ostream>
+#include <string>
+#include <string_view>
+#include <vector>
+
+#include <android-base/unique_fd.h>
+#include <android/snapshot/snapshot.pb.h>
+#include <fs_mgr_dm_linear.h>
+#include <libdm/dm.h>
+#include <libfiemap/image_manager.h>
+#include <liblp/builder.h>
+#include <liblp/liblp.h>
+#include <update_engine/update_metadata.pb.h>
+
+#include <libsnapshot/auto_device.h>
+#include <libsnapshot/return.h>
+
+#ifndef FRIEND_TEST
+#define FRIEND_TEST(test_set_name, individual_test) \
+    friend class test_set_name##_##individual_test##_Test
+#define DEFINED_FRIEND_TEST
+#endif
+
+namespace android {
+
+namespace fiemap {
+class IImageManager;
+}  // namespace fiemap
+
+namespace fs_mgr {
+struct CreateLogicalPartitionParams;
+class IPartitionOpener;
+}  // namespace fs_mgr
+
+// Forward declare IBootControl types since we cannot include only the headers
+// with Soong. Note: keep the enum width in sync.
+namespace hardware {
+namespace boot {
+namespace V1_1 {
+enum class MergeStatus : int32_t;
+}  // namespace V1_1
+}  // namespace boot
+}  // namespace hardware
+
+namespace snapshot {
+
+struct AutoDeleteCowImage;
+struct AutoDeleteSnapshot;
+struct AutoDeviceList;
+struct PartitionCowCreator;
+class SnapshotStatus;
+
+static constexpr const std::string_view kCowGroupName = "cow";
+
+bool OptimizeSourceCopyOperation(const chromeos_update_engine::InstallOperation& operation,
+                                 chromeos_update_engine::InstallOperation* optimized);
+
+enum class CreateResult : unsigned int {
+    ERROR,
+    CREATED,
+    NOT_CREATED,
+};
+
+class SnapshotManager final {
+    using CreateLogicalPartitionParams = android::fs_mgr::CreateLogicalPartitionParams;
+    using IPartitionOpener = android::fs_mgr::IPartitionOpener;
+    using LpMetadata = android::fs_mgr::LpMetadata;
+    using MetadataBuilder = android::fs_mgr::MetadataBuilder;
+    using DeltaArchiveManifest = chromeos_update_engine::DeltaArchiveManifest;
+    using MergeStatus = android::hardware::boot::V1_1::MergeStatus;
+    using FiemapStatus = android::fiemap::FiemapStatus;
+
+    friend class SnapshotMergeStats;
+
+  public:
+    // Dependency injection for testing.
+    class IDeviceInfo {
+      public:
+        virtual ~IDeviceInfo() {}
+        virtual std::string GetGsidDir() const = 0;
+        virtual std::string GetMetadataDir() const = 0;
+        virtual std::string GetSlotSuffix() const = 0;
+        virtual std::string GetOtherSlotSuffix() const = 0;
+        virtual std::string GetSuperDevice(uint32_t slot) const = 0;
+        virtual const IPartitionOpener& GetPartitionOpener() const = 0;
+        virtual bool IsOverlayfsSetup() const = 0;
+        virtual bool SetBootControlMergeStatus(MergeStatus status) = 0;
+        virtual bool SetSlotAsUnbootable(unsigned int slot) = 0;
+        virtual bool IsRecovery() const = 0;
+    };
+
+    ~SnapshotManager();
+
+    // Return a new SnapshotManager instance, or null on error. The device
+    // pointer is owned for the lifetime of SnapshotManager. If null, a default
+    // instance will be created.
+    static std::unique_ptr<SnapshotManager> New(IDeviceInfo* device = nullptr);
+
+    // This is similar to New(), except designed specifically for first-stage
+    // init or recovery.
+    static std::unique_ptr<SnapshotManager> NewForFirstStageMount(IDeviceInfo* device = nullptr);
+
+    // Helper function for first-stage init to check whether a SnapshotManager
+    // might be needed to perform first-stage mounts.
+    static bool IsSnapshotManagerNeeded();
+
+    // Helper function for second stage init to restorecon on the rollback indicator.
+    static std::string GetGlobalRollbackIndicatorPath();
+
+    // Begin an update. This must be called before creating any snapshots. It
+    // will fail if GetUpdateState() != None.
+    bool BeginUpdate();
+
+    // Cancel an update; any snapshots will be deleted. This is allowed if the
+    // state == Initiated, None, or Unverified (before rebooting to the new
+    // slot).
+    bool CancelUpdate();
+
+    // Mark snapshot writes as having completed. After this, new snapshots cannot
+    // be created, and the device must either cancel the OTA (either before
+    // rebooting or after rolling back), or merge the OTA.
+    // Before calling this function, all snapshots must be mapped.
+    // If |wipe| is set to true, wipe is scheduled after reboot, and snapshots
+    // may need to be merged before wiping.
+    bool FinishedSnapshotWrites(bool wipe);
+
+    // Initiate a merge on all snapshot devices. This should only be used after an
+    // update has been marked successful after booting.
+    bool InitiateMerge(uint64_t* cow_file_size = nullptr);
+
+    // Perform any necessary post-boot actions. This should be run soon after
+    // /data is mounted.
+    //
+    // If a merge is in progress, this function will block until the merge is
+    // completed.
+    //    - Callback is called periodically during the merge. If callback()
+    //      returns false during the merge, ProcessUpdateState() will pause
+    //      and returns Merging.
+    // If a merge or update was cancelled, this will clean up any
+    // update artifacts and return.
+    //
+    // Note that after calling this, GetUpdateState() may still return that a
+    // merge is in progress:
+    //   MergeFailed indicates that a fatal error occurred. WaitForMerge() may
+    //   called any number of times again to attempt to make more progress, but
+    //   we do not expect it to succeed if a catastrophic error occurred.
+    //
+    //   MergeNeedsReboot indicates that the merge has completed, but cleanup
+    //   failed. This can happen if for some reason resources were not closed
+    //   properly. In this case another reboot is needed before we can take
+    //   another OTA. However, WaitForMerge() can be called again without
+    //   rebooting, to attempt to finish cleanup anyway.
+    //
+    //   MergeCompleted indicates that the update has fully completed.
+    //   GetUpdateState will return None, and a new update can begin.
+    //
+    // The optional callback allows the caller to periodically check the
+    // progress with GetUpdateState().
+    UpdateState ProcessUpdateState(const std::function<bool()>& callback = {},
+                                   const std::function<bool()>& before_cancel = {});
+
+    // Find the status of the current update, if any.
+    //
+    // |progress| depends on the returned status:
+    //   Merging: Value in the range [0, 100]
+    //   MergeCompleted: 100
+    //   Other: 0
+    UpdateState GetUpdateState(double* progress = nullptr);
+
+    // Create necessary COW device / files for OTA clients. New logical partitions will be added to
+    // group "cow" in target_metadata. Regions of partitions of current_metadata will be
+    // "write-protected" and snapshotted.
+    Return CreateUpdateSnapshots(const DeltaArchiveManifest& manifest);
+
+    // Map a snapshotted partition for OTA clients to write to. Write-protected regions are
+    // determined previously in CreateSnapshots.
+    bool MapUpdateSnapshot(const CreateLogicalPartitionParams& params, std::string* snapshot_path);
+
+    // Unmap a snapshot device that's previously mapped with MapUpdateSnapshot.
+    bool UnmapUpdateSnapshot(const std::string& target_partition_name);
+
+    // If this returns true, first-stage mount must call
+    // CreateLogicalAndSnapshotPartitions rather than CreateLogicalPartitions.
+    bool NeedSnapshotsInFirstStageMount();
+
+    // Perform first-stage mapping of snapshot targets. This replaces init's
+    // call to CreateLogicalPartitions when snapshots are present.
+    bool CreateLogicalAndSnapshotPartitions(const std::string& super_device,
+                                            const std::chrono::milliseconds& timeout_ms = {});
+
+    // This method should be called preceding any wipe or flash of metadata or
+    // userdata. It is only valid in recovery or fastbootd, and it ensures that
+    // a merge has been completed.
+    //
+    // When userdata will be wiped or flashed, it is necessary to clean up any
+    // snapshot state. If a merge is in progress, the merge must be finished.
+    // If a snapshot is present but not yet merged, the slot must be marked as
+    // unbootable.
+    //
+    // Returns true on success (or nothing to do), false on failure. The
+    // optional callback fires periodically to query progress via GetUpdateState.
+    bool HandleImminentDataWipe(const std::function<void()>& callback = {});
+
+    // Force a merge to complete in recovery. This is similar to HandleImminentDataWipe
+    // but does not expect a data wipe after.
+    bool FinishMergeInRecovery();
+
+    // This method is only allowed in recovery and is used as a helper to
+    // initialize the snapshot devices as a requirement to mount a snapshotted
+    // /system in recovery.
+    // This function returns:
+    // - CreateResult::CREATED if snapshot devices were successfully created;
+    // - CreateResult::NOT_CREATED if it was not necessary to create snapshot
+    // devices;
+    // - CreateResult::ERROR if a fatal error occurred, mounting /system should
+    // be aborted.
+    // This function mounts /metadata when called, and unmounts /metadata upon
+    // return.
+    CreateResult RecoveryCreateSnapshotDevices();
+
+    // Same as RecoveryCreateSnapshotDevices(), but does not auto mount/umount
+    // /metadata.
+    CreateResult RecoveryCreateSnapshotDevices(const std::unique_ptr<AutoDevice>& metadata_device);
+
+    // Dump debug information.
+    bool Dump(std::ostream& os);
+
+    // Ensure metadata directory is mounted in recovery. When the returned
+    // AutoDevice is destroyed, the metadata directory is automatically
+    // unmounted.
+    // Return nullptr if any failure.
+    // In Android mode, Return an AutoDevice that does nothing
+    // In recovery, return an AutoDevice that does nothing if metadata entry
+    // is not found in fstab.
+    // Note: if this function is called the second time before the AutoDevice returned from the
+    // first call is destroyed, the device will be unmounted when any of these AutoDevices is
+    // destroyed. For example:
+    //   auto a = mgr->EnsureMetadataMounted(); // mounts
+    //   auto b = mgr->EnsureMetadataMounted(); // does nothing
+    //   b.reset() // unmounts
+    //   a.reset() // does nothing
+    std::unique_ptr<AutoDevice> EnsureMetadataMounted();
+
+  private:
+    FRIEND_TEST(SnapshotTest, CleanFirstStageMount);
+    FRIEND_TEST(SnapshotTest, CreateSnapshot);
+    FRIEND_TEST(SnapshotTest, FirstStageMountAfterRollback);
+    FRIEND_TEST(SnapshotTest, FirstStageMountAndMerge);
+    FRIEND_TEST(SnapshotTest, FlashSuperDuringMerge);
+    FRIEND_TEST(SnapshotTest, FlashSuperDuringUpdate);
+    FRIEND_TEST(SnapshotTest, MapPartialSnapshot);
+    FRIEND_TEST(SnapshotTest, MapSnapshot);
+    FRIEND_TEST(SnapshotTest, Merge);
+    FRIEND_TEST(SnapshotTest, NoMergeBeforeReboot);
+    FRIEND_TEST(SnapshotTest, UpdateBootControlHal);
+    FRIEND_TEST(SnapshotUpdateTest, DataWipeAfterRollback);
+    FRIEND_TEST(SnapshotUpdateTest, DataWipeRollbackInRecovery);
+    FRIEND_TEST(SnapshotUpdateTest, FullUpdateFlow);
+    FRIEND_TEST(SnapshotUpdateTest, MergeCannotRemoveCow);
+    FRIEND_TEST(SnapshotUpdateTest, MergeInRecovery);
+    FRIEND_TEST(SnapshotUpdateTest, SnapshotStatusFileWithoutCow);
+    friend class SnapshotTest;
+    friend class SnapshotUpdateTest;
+    friend class FlashAfterUpdateTest;
+    friend class LockTestConsumer;
+    friend struct AutoDeleteCowImage;
+    friend struct AutoDeleteSnapshot;
+    friend struct PartitionCowCreator;
+
+    using DmTargetSnapshot = android::dm::DmTargetSnapshot;
+    using IImageManager = android::fiemap::IImageManager;
+    using TargetInfo = android::dm::DeviceMapper::TargetInfo;
+
+    explicit SnapshotManager(IDeviceInfo* info);
+
+    // This is created lazily since it can connect via binder.
+    bool EnsureImageManager();
+
+    // Helper for first-stage init.
+    bool ForceLocalImageManager();
+
+    // Helper function for tests.
+    IImageManager* image_manager() const { return images_.get(); }
+
+    // Since libsnapshot is included into multiple processes, we flock() our
+    // files for simple synchronization. LockedFile is a helper to assist with
+    // this. It also serves as a proof-of-lock for some functions.
+    class LockedFile final {
+      public:
+        LockedFile(const std::string& path, android::base::unique_fd&& fd, int lock_mode)
+            : path_(path), fd_(std::move(fd)), lock_mode_(lock_mode) {}
+        ~LockedFile();
+        int lock_mode() const { return lock_mode_; }
+
+      private:
+        std::string path_;
+        android::base::unique_fd fd_;
+        int lock_mode_;
+    };
+    static std::unique_ptr<LockedFile> OpenFile(const std::string& file, int lock_flags);
+
+    // Create a new snapshot record. This creates the backing COW store and
+    // persists information needed to map the device. The device can be mapped
+    // with MapSnapshot().
+    //
+    // |status|.device_size should be the size of the base_device that will be passed
+    // via MapDevice(). |status|.snapshot_size should be the number of bytes in the
+    // base device, starting from 0, that will be snapshotted. |status|.cow_file_size
+    // should be the amount of space that will be allocated to store snapshot
+    // deltas.
+    //
+    // If |status|.snapshot_size < |status|.device_size, then the device will always
+    // be mapped with two table entries: a dm-snapshot range covering
+    // snapshot_size, and a dm-linear range covering the remainder.
+    //
+    // All sizes are specified in bytes, and the device, snapshot, COW partition and COW file sizes
+    // must be a multiple of the sector size (512 bytes).
+    bool CreateSnapshot(LockedFile* lock, SnapshotStatus* status);
+
+    // |name| should be the base partition name (e.g. "system_a"). Create the
+    // backing COW image using the size previously passed to CreateSnapshot().
+    Return CreateCowImage(LockedFile* lock, const std::string& name);
+
+    // Map a snapshot device that was previously created with CreateSnapshot.
+    // If a merge was previously initiated, the device-mapper table will have a
+    // snapshot-merge target instead of a snapshot target. If the timeout
+    // parameter greater than zero, this function will wait the given amount
+    // of time for |dev_path| to become available, and fail otherwise. If
+    // timeout_ms is 0, then no wait will occur and |dev_path| may not yet
+    // exist on return.
+    bool MapSnapshot(LockedFile* lock, const std::string& name, const std::string& base_device,
+                     const std::string& cow_device, const std::chrono::milliseconds& timeout_ms,
+                     std::string* dev_path);
+
+    // Map a COW image that was previous created with CreateCowImage.
+    std::optional<std::string> MapCowImage(const std::string& name,
+                                           const std::chrono::milliseconds& timeout_ms);
+
+    // Remove the backing copy-on-write image and snapshot states for the named snapshot. The
+    // caller is responsible for ensuring that the snapshot is unmapped.
+    bool DeleteSnapshot(LockedFile* lock, const std::string& name);
+
+    // Unmap a snapshot device previously mapped with MapSnapshotDevice().
+    bool UnmapSnapshot(LockedFile* lock, const std::string& name);
+
+    // Unmap a COW image device previously mapped with MapCowImage().
+    bool UnmapCowImage(const std::string& name);
+
+    // Unmap and remove all known snapshots.
+    bool RemoveAllSnapshots(LockedFile* lock);
+
+    // List the known snapshot names.
+    bool ListSnapshots(LockedFile* lock, std::vector<std::string>* snapshots);
+
+    // Check for a cancelled or rolled back merge, returning true if such a
+    // condition was detected and handled.
+    bool HandleCancelledUpdate(LockedFile* lock, const std::function<bool()>& before_cancel);
+
+    // Helper for HandleCancelledUpdate. Assumes booting from new slot.
+    bool AreAllSnapshotsCancelled(LockedFile* lock);
+
+    // Determine whether partition names in |snapshots| have been flashed and
+    // store result to |out|.
+    // Return true if values are successfully retrieved and false on error
+    // (e.g. super partition metadata cannot be read). When it returns true,
+    // |out| stores true for partitions that have been flashed and false for
+    // partitions that have not been flashed.
+    bool GetSnapshotFlashingStatus(LockedFile* lock, const std::vector<std::string>& snapshots,
+                                   std::map<std::string, bool>* out);
+
+    // Remove artifacts created by the update process, such as snapshots, and
+    // set the update state to None.
+    bool RemoveAllUpdateState(LockedFile* lock, const std::function<bool()>& prolog = {});
+
+    // Interact with /metadata/ota.
+    std::unique_ptr<LockedFile> OpenLock(int lock_flags);
+    std::unique_ptr<LockedFile> LockShared();
+    std::unique_ptr<LockedFile> LockExclusive();
+    std::string GetLockPath() const;
+
+    // Interact with /metadata/ota/state.
+    UpdateState ReadUpdateState(LockedFile* file);
+    SnapshotUpdateStatus ReadSnapshotUpdateStatus(LockedFile* file);
+    bool WriteUpdateState(LockedFile* file, UpdateState state);
+    bool WriteSnapshotUpdateStatus(LockedFile* file, const SnapshotUpdateStatus& status);
+    std::string GetStateFilePath() const;
+
+    // Interact with /metadata/ota/merge_state.
+    // This file contains information related to the snapshot merge process.
+    std::string GetMergeStateFilePath() const;
+
+    // Helpers for merging.
+    bool SwitchSnapshotToMerge(LockedFile* lock, const std::string& name);
+    bool RewriteSnapshotDeviceTable(const std::string& dm_name);
+    bool MarkSnapshotMergeCompleted(LockedFile* snapshot_lock, const std::string& snapshot_name);
+    void AcknowledgeMergeSuccess(LockedFile* lock);
+    void AcknowledgeMergeFailure();
+    std::unique_ptr<LpMetadata> ReadCurrentMetadata();
+
+    enum class MetadataPartitionState {
+        // Partition does not exist.
+        None,
+        // Partition is flashed.
+        Flashed,
+        // Partition is created by OTA client.
+        Updated,
+    };
+    // Helper function to check the state of a partition as described in metadata.
+    MetadataPartitionState GetMetadataPartitionState(const LpMetadata& metadata,
+                                                     const std::string& name);
+
+    // Note that these require the name of the device containing the snapshot,
+    // which may be the "inner" device. Use GetsnapshotDeviecName().
+    bool QuerySnapshotStatus(const std::string& dm_name, std::string* target_type,
+                             DmTargetSnapshot::Status* status);
+    bool IsSnapshotDevice(const std::string& dm_name, TargetInfo* target = nullptr);
+
+    // Internal callback for when merging is complete.
+    bool OnSnapshotMergeComplete(LockedFile* lock, const std::string& name,
+                                 const SnapshotStatus& status);
+    bool CollapseSnapshotDevice(const std::string& name, const SnapshotStatus& status);
+
+    // Only the following UpdateStates are used here:
+    //   UpdateState::Merging
+    //   UpdateState::MergeCompleted
+    //   UpdateState::MergeFailed
+    //   UpdateState::MergeNeedsReboot
+    UpdateState CheckMergeState(const std::function<bool()>& before_cancel);
+    UpdateState CheckMergeState(LockedFile* lock, const std::function<bool()>& before_cancel);
+    UpdateState CheckTargetMergeState(LockedFile* lock, const std::string& name);
+
+    // Interact with status files under /metadata/ota/snapshots.
+    bool WriteSnapshotStatus(LockedFile* lock, const SnapshotStatus& status);
+    bool ReadSnapshotStatus(LockedFile* lock, const std::string& name, SnapshotStatus* status);
+    std::string GetSnapshotStatusFilePath(const std::string& name);
+
+    std::string GetSnapshotBootIndicatorPath();
+    std::string GetRollbackIndicatorPath();
+    std::string GetForwardMergeIndicatorPath();
+
+    // Return the name of the device holding the "snapshot" or "snapshot-merge"
+    // target. This may not be the final device presented via MapSnapshot(), if
+    // for example there is a linear segment.
+    std::string GetSnapshotDeviceName(const std::string& snapshot_name,
+                                      const SnapshotStatus& status);
+
+    // Map the base device, COW devices, and snapshot device.
+    bool MapPartitionWithSnapshot(LockedFile* lock, CreateLogicalPartitionParams params,
+                                  std::string* path);
+
+    // Map the COW devices, including the partition in super and the images.
+    // |params|:
+    //    - |partition_name| should be the name of the top-level partition (e.g. system_b),
+    //            not system_b-cow-img
+    //    - |device_name| and |partition| is ignored
+    //    - |timeout_ms| and the rest is respected
+    // Return the path in |cow_device_path| (e.g. /dev/block/dm-1) and major:minor in
+    // |cow_device_string|
+    bool MapCowDevices(LockedFile* lock, const CreateLogicalPartitionParams& params,
+                       const SnapshotStatus& snapshot_status, AutoDeviceList* created_devices,
+                       std::string* cow_name);
+
+    // The reverse of MapCowDevices.
+    bool UnmapCowDevices(LockedFile* lock, const std::string& name);
+
+    // The reverse of MapPartitionWithSnapshot.
+    bool UnmapPartitionWithSnapshot(LockedFile* lock, const std::string& target_partition_name);
+
+    // If there isn't a previous update, return true. |needs_merge| is set to false.
+    // If there is a previous update but the device has not boot into it, tries to cancel the
+    //   update and delete any snapshots. Return true if successful. |needs_merge| is set to false.
+    // If there is a previous update and the device has boot into it, do nothing and return true.
+    //   |needs_merge| is set to true.
+    bool TryCancelUpdate(bool* needs_merge);
+
+    // Helper for CreateUpdateSnapshots.
+    // Creates all underlying images, COW partitions and snapshot files. Does not initialize them.
+    Return CreateUpdateSnapshotsInternal(
+            LockedFile* lock, const DeltaArchiveManifest& manifest,
+            PartitionCowCreator* cow_creator, AutoDeviceList* created_devices,
+            std::map<std::string, SnapshotStatus>* all_snapshot_status);
+
+    // Initialize snapshots so that they can be mapped later.
+    // Map the COW partition and zero-initialize the header.
+    Return InitializeUpdateSnapshots(
+            LockedFile* lock, MetadataBuilder* target_metadata,
+            const LpMetadata* exported_target_metadata, const std::string& target_suffix,
+            const std::map<std::string, SnapshotStatus>& all_snapshot_status);
+
+    // Unmap all partitions that were mapped by CreateLogicalAndSnapshotPartitions.
+    // This should only be called in recovery.
+    bool UnmapAllPartitions();
+
+    // Sanity check no snapshot overflows. Note that this returns false negatives if the snapshot
+    // overflows, then is remapped and not written afterwards. Hence, the function may only serve
+    // as a sanity check.
+    bool EnsureNoOverflowSnapshot(LockedFile* lock);
+
+    enum class Slot { Unknown, Source, Target };
+    friend std::ostream& operator<<(std::ostream& os, SnapshotManager::Slot slot);
+    Slot GetCurrentSlot();
+
+    std::string ReadUpdateSourceSlotSuffix();
+
+    // Helper for RemoveAllSnapshots.
+    // Check whether |name| should be deleted as a snapshot name.
+    bool ShouldDeleteSnapshot(LockedFile* lock, const std::map<std::string, bool>& flashing_status,
+                              Slot current_slot, const std::string& name);
+
+    // Create or delete forward merge indicator given |wipe|. Iff wipe is scheduled,
+    // allow forward merge on FDR.
+    bool UpdateForwardMergeIndicator(bool wipe);
+
+    // Helper for HandleImminentDataWipe.
+    // Call ProcessUpdateState and handle states with special rules before data wipe. Specifically,
+    // if |allow_forward_merge| and allow-forward-merge indicator exists, initiate merge if
+    // necessary.
+    bool ProcessUpdateStateOnDataWipe(bool allow_forward_merge,
+                                      const std::function<bool()>& callback);
+
+    // Return device string of a mapped image, or if it is not available, the mapped image path.
+    bool GetMappedImageDeviceStringOrPath(const std::string& device_name,
+                                          std::string* device_string_or_mapped_path);
+
+    std::string gsid_dir_;
+    std::string metadata_dir_;
+    std::unique_ptr<IDeviceInfo> device_;
+    std::unique_ptr<IImageManager> images_;
+    bool has_local_image_manager_ = false;
+    bool in_factory_data_reset_ = false;
+};
+
+}  // namespace snapshot
+}  // namespace android
+
+#ifdef DEFINED_FRIEND_TEST
+#undef DEFINED_FRIEND_TEST
+#undef FRIEND_TEST
+#endif
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/snapshot_stats.h b/fs_mgr/libsnapshot/include/libsnapshot/snapshot_stats.h
new file mode 100644
index 0000000..bdc3ea3
--- /dev/null
+++ b/fs_mgr/libsnapshot/include/libsnapshot/snapshot_stats.h
@@ -0,0 +1,63 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <chrono>
+#include <memory>
+
+#include <android/snapshot/snapshot.pb.h>
+#include <libsnapshot/snapshot.h>
+
+namespace android {
+namespace snapshot {
+
+class SnapshotMergeStats {
+  public:
+    // Not thread safe.
+    static SnapshotMergeStats* GetInstance(SnapshotManager& manager);
+
+    // Called when merge starts or resumes.
+    bool Start();
+    void set_state(android::snapshot::UpdateState state);
+    virtual void set_cow_file_size(uint64_t cow_file_size);
+    virtual uint64_t cow_file_size();
+
+    // Called when merge ends. Properly clean up permanent storage.
+    class Result {
+      public:
+        virtual ~Result() {}
+        virtual const SnapshotMergeReport& report() const = 0;
+        // Time between successful Start() / Resume() to Finish().
+        virtual std::chrono::steady_clock::duration merge_time() const = 0;
+    };
+    std::unique_ptr<Result> Finish();
+
+  private:
+    virtual ~SnapshotMergeStats() {}
+
+    bool ReadState();
+    bool WriteState();
+    bool DeleteState();
+    SnapshotMergeStats(const std::string& path);
+
+    std::string path_;
+    SnapshotMergeReport report_;
+    // Time of the last successful Start() / Resume() call.
+    std::chrono::time_point<std::chrono::steady_clock> start_time_;
+    bool running_{false};
+};
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/include_test/libsnapshot/test_helpers.h b/fs_mgr/libsnapshot/include_test/libsnapshot/test_helpers.h
new file mode 100644
index 0000000..8e369b0
--- /dev/null
+++ b/fs_mgr/libsnapshot/include_test/libsnapshot/test_helpers.h
@@ -0,0 +1,201 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <memory>
+#include <optional>
+#include <string>
+#include <unordered_set>
+
+#include <android-base/file.h>
+#include <android/hardware/boot/1.1/IBootControl.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <libfiemap/image_manager.h>
+#include <liblp/mock_property_fetcher.h>
+#include <liblp/partition_opener.h>
+#include <libsnapshot/snapshot.h>
+#include <storage_literals/storage_literals.h>
+#include <update_engine/update_metadata.pb.h>
+
+namespace android {
+namespace snapshot {
+
+using android::fs_mgr::IPropertyFetcher;
+using android::fs_mgr::MetadataBuilder;
+using android::fs_mgr::testing::MockPropertyFetcher;
+using android::hardware::boot::V1_1::MergeStatus;
+using chromeos_update_engine::DeltaArchiveManifest;
+using chromeos_update_engine::PartitionUpdate;
+using testing::_;
+using testing::AssertionResult;
+using testing::NiceMock;
+
+using namespace android::storage_literals;
+using namespace std::string_literals;
+
+// These are not reset between each test because it's expensive to create
+// these resources (starting+connecting to gsid, zero-filling images).
+extern std::unique_ptr<SnapshotManager> sm;
+extern class TestDeviceInfo* test_device;
+extern std::string fake_super;
+static constexpr uint64_t kSuperSize = 16_MiB + 4_KiB;
+static constexpr uint64_t kGroupSize = 16_MiB;
+
+// Redirect requests for "super" to our fake super partition.
+class TestPartitionOpener final : public android::fs_mgr::PartitionOpener {
+  public:
+    explicit TestPartitionOpener(const std::string& fake_super_path)
+        : fake_super_path_(fake_super_path) {}
+
+    android::base::unique_fd Open(const std::string& partition_name, int flags) const override;
+    bool GetInfo(const std::string& partition_name,
+                 android::fs_mgr::BlockDeviceInfo* info) const override;
+    std::string GetDeviceString(const std::string& partition_name) const override;
+
+  private:
+    std::string fake_super_path_;
+};
+
+class TestDeviceInfo : public SnapshotManager::IDeviceInfo {
+  public:
+    TestDeviceInfo() {}
+    explicit TestDeviceInfo(const std::string& fake_super) { set_fake_super(fake_super); }
+    TestDeviceInfo(const std::string& fake_super, const std::string& slot_suffix)
+        : TestDeviceInfo(fake_super) {
+        set_slot_suffix(slot_suffix);
+    }
+    std::string GetGsidDir() const override { return "ota/test"s; }
+    std::string GetMetadataDir() const override { return "/metadata/ota/test"s; }
+    std::string GetSlotSuffix() const override { return slot_suffix_; }
+    std::string GetOtherSlotSuffix() const override { return slot_suffix_ == "_a" ? "_b" : "_a"; }
+    std::string GetSuperDevice([[maybe_unused]] uint32_t slot) const override { return "super"; }
+    const android::fs_mgr::IPartitionOpener& GetPartitionOpener() const override {
+        return *opener_.get();
+    }
+    bool SetBootControlMergeStatus(MergeStatus status) override {
+        merge_status_ = status;
+        return true;
+    }
+    bool IsOverlayfsSetup() const override { return false; }
+    bool IsRecovery() const override { return recovery_; }
+    bool SetSlotAsUnbootable(unsigned int slot) override {
+        unbootable_slots_.insert(slot);
+        return true;
+    }
+
+    bool IsSlotUnbootable(uint32_t slot) { return unbootable_slots_.count(slot) != 0; }
+
+    void set_slot_suffix(const std::string& suffix) { slot_suffix_ = suffix; }
+    void set_fake_super(const std::string& path) {
+        opener_ = std::make_unique<TestPartitionOpener>(path);
+    }
+    void set_recovery(bool value) { recovery_ = value; }
+    MergeStatus merge_status() const { return merge_status_; }
+
+  private:
+    std::string slot_suffix_ = "_a";
+    std::unique_ptr<TestPartitionOpener> opener_;
+    MergeStatus merge_status_;
+    bool recovery_ = false;
+    std::unordered_set<uint32_t> unbootable_slots_;
+};
+
+class SnapshotTestPropertyFetcher : public android::fs_mgr::testing::MockPropertyFetcher {
+  public:
+    SnapshotTestPropertyFetcher(const std::string& slot_suffix) {
+        using testing::Return;
+        ON_CALL(*this, GetProperty("ro.boot.slot_suffix", _)).WillByDefault(Return(slot_suffix));
+        ON_CALL(*this, GetBoolProperty("ro.boot.dynamic_partitions", _))
+                .WillByDefault(Return(true));
+        ON_CALL(*this, GetBoolProperty("ro.boot.dynamic_partitions_retrofit", _))
+                .WillByDefault(Return(false));
+        ON_CALL(*this, GetBoolProperty("ro.virtual_ab.enabled", _)).WillByDefault(Return(true));
+    }
+
+    static void SetUp(const std::string& slot_suffix = "_a") { Reset(slot_suffix); }
+
+    static void TearDown() { Reset("_a"); }
+
+  private:
+    static void Reset(const std::string& slot_suffix) {
+        IPropertyFetcher::OverrideForTesting(
+                std::make_unique<NiceMock<SnapshotTestPropertyFetcher>>(slot_suffix));
+    }
+};
+
+// Helper for error-spam-free cleanup.
+void DeleteBackingImage(android::fiemap::IImageManager* manager, const std::string& name);
+
+// Write some random data to the given device.
+// If expect_size is not specified, will write until reaching end of the device.
+// Expect space of |path| is multiple of 4K.
+bool WriteRandomData(const std::string& path, std::optional<size_t> expect_size = std::nullopt,
+                     std::string* hash = nullptr);
+
+std::optional<std::string> GetHash(const std::string& path);
+
+// Add partitions and groups described by |manifest|.
+AssertionResult FillFakeMetadata(MetadataBuilder* builder, const DeltaArchiveManifest& manifest,
+                                 const std::string& suffix);
+
+// In the update package metadata, set a partition with the given size.
+void SetSize(PartitionUpdate* partition_update, uint64_t size);
+
+// Get partition size from update package metadata.
+uint64_t GetSize(PartitionUpdate* partition_update);
+
+// Util class for test cases on low space scenario. These tests assumes image manager
+// uses /data as backup device.
+class LowSpaceUserdata {
+  public:
+    // Set the maximum free space allowed for this test. If /userdata has more space than the given
+    // number, a file is allocated to consume space.
+    AssertionResult Init(uint64_t max_free_space);
+
+    uint64_t free_space() const;
+    uint64_t available_space() const;
+    uint64_t bsize() const;
+
+  private:
+    AssertionResult ReadUserdataStats();
+
+    static constexpr const char* kUserDataDevice = "/data";
+    std::unique_ptr<TemporaryFile> big_file_;
+    bool initialized_ = false;
+    uint64_t free_space_ = 0;
+    uint64_t available_space_ = 0;
+    uint64_t bsize_ = 0;
+};
+
+bool IsVirtualAbEnabled();
+
+#define SKIP_IF_NON_VIRTUAL_AB()                                                        \
+    do {                                                                                \
+        if (!IsVirtualAbEnabled()) GTEST_SKIP() << "Test for Virtual A/B devices only"; \
+    } while (0)
+
+#define RETURN_IF_NON_VIRTUAL_AB_MSG(msg) \
+    do {                                  \
+        if (!IsVirtualAbEnabled()) {      \
+            std::cerr << (msg);           \
+            return;                       \
+        }                                 \
+    } while (0)
+
+#define RETURN_IF_NON_VIRTUAL_AB() RETURN_IF_NON_VIRTUAL_AB_MSG("")
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/partition_cow_creator.cpp b/fs_mgr/libsnapshot/partition_cow_creator.cpp
new file mode 100644
index 0000000..0df5664
--- /dev/null
+++ b/fs_mgr/libsnapshot/partition_cow_creator.cpp
@@ -0,0 +1,236 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "partition_cow_creator.h"
+
+#include <math.h>
+
+#include <android-base/logging.h>
+#include <android/snapshot/snapshot.pb.h>
+
+#include "dm_snapshot_internals.h"
+#include "utility.h"
+
+using android::dm::kSectorSize;
+using android::fs_mgr::Extent;
+using android::fs_mgr::Interval;
+using android::fs_mgr::kDefaultBlockSize;
+using android::fs_mgr::Partition;
+using chromeos_update_engine::InstallOperation;
+template <typename T>
+using RepeatedPtrField = google::protobuf::RepeatedPtrField<T>;
+
+namespace android {
+namespace snapshot {
+
+// Intersect two linear extents. If no intersection, return an extent with length 0.
+static std::unique_ptr<Extent> Intersect(Extent* target_extent, Extent* existing_extent) {
+    // Convert target_extent and existing_extent to linear extents. Zero extents
+    // doesn't matter and doesn't result in any intersection.
+    auto existing_linear_extent = existing_extent->AsLinearExtent();
+    if (!existing_linear_extent) return nullptr;
+
+    auto target_linear_extent = target_extent->AsLinearExtent();
+    if (!target_linear_extent) return nullptr;
+
+    return Interval::Intersect(target_linear_extent->AsInterval(),
+                               existing_linear_extent->AsInterval())
+            .AsExtent();
+}
+
+// Check that partition |p| contains |e| fully. Both of them should
+// be from |target_metadata|.
+// Returns true as long as |e| is a subrange of any extent of |p|.
+bool PartitionCowCreator::HasExtent(Partition* p, Extent* e) {
+    for (auto& partition_extent : p->extents()) {
+        auto intersection = Intersect(partition_extent.get(), e);
+        if (intersection != nullptr && intersection->num_sectors() == e->num_sectors()) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool OptimizeSourceCopyOperation(const InstallOperation& operation, InstallOperation* optimized) {
+    if (operation.type() != InstallOperation::SOURCE_COPY) {
+        return false;
+    }
+
+    optimized->Clear();
+    optimized->set_type(InstallOperation::SOURCE_COPY);
+
+    const auto& src_extents = operation.src_extents();
+    const auto& dst_extents = operation.dst_extents();
+
+    // If input is empty, skip by returning an empty result.
+    if (src_extents.empty() && dst_extents.empty()) {
+        return true;
+    }
+
+    auto s_it = src_extents.begin();
+    auto d_it = dst_extents.begin();
+    uint64_t s_offset = 0;  // offset within *s_it
+    uint64_t d_offset = 0;  // offset within *d_it
+    bool is_optimized = false;
+
+    while (s_it != src_extents.end() || d_it != dst_extents.end()) {
+        if (s_it == src_extents.end() || d_it == dst_extents.end()) {
+            LOG(ERROR) << "number of blocks do not equal in src_extents and dst_extents";
+            return false;
+        }
+        if (s_it->num_blocks() <= s_offset || d_it->num_blocks() <= d_offset) {
+            LOG(ERROR) << "Offset goes out of bounds.";
+            return false;
+        }
+
+        // Check the next |step| blocks, where |step| is the min of remaining blocks in the current
+        // source extent and current destination extent.
+        auto s_step = s_it->num_blocks() - s_offset;
+        auto d_step = d_it->num_blocks() - d_offset;
+        auto step = std::min(s_step, d_step);
+
+        bool moved = s_it->start_block() + s_offset != d_it->start_block() + d_offset;
+        if (moved) {
+            // If the next |step| blocks are not copied to the same location, add them to result.
+            AppendExtent(optimized->mutable_src_extents(), s_it->start_block() + s_offset, step);
+            AppendExtent(optimized->mutable_dst_extents(), d_it->start_block() + d_offset, step);
+        } else {
+            // The next |step| blocks are optimized out.
+            is_optimized = true;
+        }
+
+        // Advance offsets by |step|, and go to the next non-empty extent if the current extent is
+        // depleted.
+        s_offset += step;
+        d_offset += step;
+        while (s_it != src_extents.end() && s_offset >= s_it->num_blocks()) {
+            ++s_it;
+            s_offset = 0;
+        }
+        while (d_it != dst_extents.end() && d_offset >= d_it->num_blocks()) {
+            ++d_it;
+            d_offset = 0;
+        }
+    }
+    return is_optimized;
+}
+
+void WriteExtent(DmSnapCowSizeCalculator* sc, const chromeos_update_engine::Extent& de,
+                 unsigned int sectors_per_block) {
+    const auto block_boundary = de.start_block() + de.num_blocks();
+    for (auto b = de.start_block(); b < block_boundary; ++b) {
+        for (unsigned int s = 0; s < sectors_per_block; ++s) {
+            const auto sector_id = b * sectors_per_block + s;
+            sc->WriteSector(sector_id);
+        }
+    }
+}
+
+uint64_t PartitionCowCreator::GetCowSize() {
+    // WARNING: The origin partition should be READ-ONLY
+    const uint64_t logical_block_size = current_metadata->logical_block_size();
+    const unsigned int sectors_per_block = logical_block_size / kSectorSize;
+    DmSnapCowSizeCalculator sc(kSectorSize, kSnapshotChunkSize);
+
+    // Allocate space for extra extents (if any). These extents are those that can be
+    // used for error corrections or to store verity hash trees.
+    for (const auto& de : extra_extents) {
+        WriteExtent(&sc, de, sectors_per_block);
+    }
+
+    if (operations == nullptr) return sc.cow_size_bytes();
+
+    for (const auto& iop : *operations) {
+        const InstallOperation* written_op = &iop;
+        InstallOperation buf;
+        // Do not allocate space for extents that are going to be skipped
+        // during OTA application.
+        if (iop.type() == InstallOperation::SOURCE_COPY && OptimizeSourceCopyOperation(iop, &buf)) {
+            written_op = &buf;
+        }
+
+        for (const auto& de : written_op->dst_extents()) {
+            WriteExtent(&sc, de, sectors_per_block);
+        }
+    }
+
+    return sc.cow_size_bytes();
+}
+
+std::optional<PartitionCowCreator::Return> PartitionCowCreator::Run() {
+    CHECK(current_metadata->GetBlockDevicePartitionName(0) == LP_METADATA_DEFAULT_PARTITION_NAME &&
+          target_metadata->GetBlockDevicePartitionName(0) == LP_METADATA_DEFAULT_PARTITION_NAME);
+
+    const uint64_t logical_block_size = current_metadata->logical_block_size();
+    CHECK(logical_block_size != 0 && !(logical_block_size & (logical_block_size - 1)))
+            << "logical_block_size is not power of 2";
+
+    Return ret;
+    ret.snapshot_status.set_name(target_partition->name());
+    ret.snapshot_status.set_device_size(target_partition->size());
+    ret.snapshot_status.set_snapshot_size(target_partition->size());
+
+    if (ret.snapshot_status.snapshot_size() == 0) {
+        LOG(INFO) << "Not creating snapshot for partition " << ret.snapshot_status.name();
+        ret.snapshot_status.set_cow_partition_size(0);
+        ret.snapshot_status.set_cow_file_size(0);
+        return ret;
+    }
+
+    // Being the COW partition virtual, its size doesn't affect the storage
+    // memory that will be occupied by the target.
+    // The actual storage space is affected by the COW file, whose size depends
+    // on the chunks that diverged between |current| and |target|.
+    // If the |target| partition is bigger than |current|, the data that is
+    // modified outside of |current| can be written directly to |current|.
+    // This because the data that will be written outside of |current| would
+    // not invalidate any useful information of |current|, thus:
+    // - if the snapshot is accepted for merge, this data would be already at
+    // the right place and should not be copied;
+    // - in the unfortunate case of the snapshot to be discarded, the regions
+    // modified by this data can be set as free regions and reused.
+    // Compute regions that are free in both current and target metadata. These are the regions
+    // we can use for COW partition.
+    auto target_free_regions = target_metadata->GetFreeRegions();
+    auto current_free_regions = current_metadata->GetFreeRegions();
+    auto free_regions = Interval::Intersect(target_free_regions, current_free_regions);
+    uint64_t free_region_length = 0;
+    for (const auto& interval : free_regions) {
+        free_region_length += interval.length();
+    }
+    free_region_length *= kSectorSize;
+
+    LOG(INFO) << "Remaining free space for COW: " << free_region_length << " bytes";
+    auto cow_size = GetCowSize();
+
+    // Compute the COW partition size.
+    uint64_t cow_partition_size = std::min(cow_size, free_region_length);
+    // Round it down to the nearest logical block. Logical partitions must be a multiple
+    // of logical blocks.
+    cow_partition_size &= ~(logical_block_size - 1);
+    ret.snapshot_status.set_cow_partition_size(cow_partition_size);
+    // Assign cow_partition_usable_regions to indicate what regions should the COW partition uses.
+    ret.cow_partition_usable_regions = std::move(free_regions);
+
+    auto cow_file_size = cow_size - cow_partition_size;
+    // Round it up to the nearest sector.
+    cow_file_size += kSectorSize - 1;
+    cow_file_size &= ~(kSectorSize - 1);
+    ret.snapshot_status.set_cow_file_size(cow_file_size);
+
+    return ret;
+}
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/partition_cow_creator.h b/fs_mgr/libsnapshot/partition_cow_creator.h
new file mode 100644
index 0000000..699f9a1
--- /dev/null
+++ b/fs_mgr/libsnapshot/partition_cow_creator.h
@@ -0,0 +1,72 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <stdint.h>
+
+#include <optional>
+#include <string>
+#include <vector>
+
+#include <liblp/builder.h>
+#include <update_engine/update_metadata.pb.h>
+
+#include <android/snapshot/snapshot.pb.h>
+
+namespace android {
+namespace snapshot {
+
+// Helper class that creates COW for a partition.
+struct PartitionCowCreator {
+    using Extent = android::fs_mgr::Extent;
+    using ChromeOSExtent = chromeos_update_engine::Extent;
+    using Interval = android::fs_mgr::Interval;
+    using MetadataBuilder = android::fs_mgr::MetadataBuilder;
+    using Partition = android::fs_mgr::Partition;
+    using InstallOperation = chromeos_update_engine::InstallOperation;
+    template <typename T>
+    using RepeatedPtrField = google::protobuf::RepeatedPtrField<T>;
+
+    // The metadata that will be written to target metadata slot.
+    MetadataBuilder* target_metadata = nullptr;
+    // The suffix of the target slot.
+    std::string target_suffix;
+    // The partition in target_metadata that needs to be snapshotted.
+    Partition* target_partition = nullptr;
+    // The metadata at the current slot (that would be used if the device boots
+    // normally). This is used to determine which extents are being used.
+    MetadataBuilder* current_metadata = nullptr;
+    // The suffix of the current slot.
+    std::string current_suffix;
+    // List of operations to be applied on the partition.
+    const RepeatedPtrField<InstallOperation>* operations = nullptr;
+    // Extra extents that are going to be invalidated during the update
+    // process.
+    std::vector<ChromeOSExtent> extra_extents = {};
+
+    struct Return {
+        SnapshotStatus snapshot_status;
+        std::vector<Interval> cow_partition_usable_regions;
+    };
+
+    std::optional<Return> Run();
+
+  private:
+    bool HasExtent(Partition* p, Extent* e);
+    uint64_t GetCowSize();
+};
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/partition_cow_creator_test.cpp b/fs_mgr/libsnapshot/partition_cow_creator_test.cpp
new file mode 100644
index 0000000..aca55b4
--- /dev/null
+++ b/fs_mgr/libsnapshot/partition_cow_creator_test.cpp
@@ -0,0 +1,308 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <optional>
+#include <tuple>
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <libdm/dm.h>
+#include <liblp/builder.h>
+#include <liblp/property_fetcher.h>
+
+#include <libsnapshot/test_helpers.h>
+
+#include "dm_snapshot_internals.h"
+#include "partition_cow_creator.h"
+#include "utility.h"
+
+using namespace android::fs_mgr;
+
+using chromeos_update_engine::InstallOperation;
+using UeExtent = chromeos_update_engine::Extent;
+using google::protobuf::RepeatedPtrField;
+using ::testing::Matches;
+using ::testing::Pointwise;
+using ::testing::Truly;
+
+namespace android {
+namespace snapshot {
+
+class PartitionCowCreatorTest : public ::testing::Test {
+  public:
+    void SetUp() override {
+        SKIP_IF_NON_VIRTUAL_AB();
+        SnapshotTestPropertyFetcher::SetUp();
+    }
+    void TearDown() override {
+        RETURN_IF_NON_VIRTUAL_AB();
+        SnapshotTestPropertyFetcher::TearDown();
+    }
+};
+
+TEST_F(PartitionCowCreatorTest, IntersectSelf) {
+    constexpr uint64_t initial_size = 1_MiB;
+    constexpr uint64_t final_size = 40_KiB;
+
+    auto builder_a = MetadataBuilder::New(initial_size, 1_KiB, 2);
+    ASSERT_NE(builder_a, nullptr);
+    auto system_a = builder_a->AddPartition("system_a", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(system_a, nullptr);
+    ASSERT_TRUE(builder_a->ResizePartition(system_a, final_size));
+
+    auto builder_b = MetadataBuilder::New(initial_size, 1_KiB, 2);
+    ASSERT_NE(builder_b, nullptr);
+    auto system_b = builder_b->AddPartition("system_b", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(system_b, nullptr);
+    ASSERT_TRUE(builder_b->ResizePartition(system_b, final_size));
+
+    PartitionCowCreator creator{.target_metadata = builder_b.get(),
+                                .target_suffix = "_b",
+                                .target_partition = system_b,
+                                .current_metadata = builder_a.get(),
+                                .current_suffix = "_a"};
+    auto ret = creator.Run();
+    ASSERT_TRUE(ret.has_value());
+    ASSERT_EQ(final_size, ret->snapshot_status.device_size());
+    ASSERT_EQ(final_size, ret->snapshot_status.snapshot_size());
+}
+
+TEST_F(PartitionCowCreatorTest, Holes) {
+    const auto& opener = test_device->GetPartitionOpener();
+
+    constexpr auto slack_space = 1_MiB;
+    constexpr auto big_size = (kSuperSize - slack_space) / 2;
+    constexpr auto small_size = big_size / 2;
+
+    BlockDeviceInfo super_device("super", kSuperSize, 0, 0, 4_KiB);
+    std::vector<BlockDeviceInfo> devices = {super_device};
+    auto source = MetadataBuilder::New(devices, "super", 1_KiB, 2);
+    auto system = source->AddPartition("system_a", 0);
+    ASSERT_NE(nullptr, system);
+    ASSERT_TRUE(source->ResizePartition(system, big_size));
+    auto vendor = source->AddPartition("vendor_a", 0);
+    ASSERT_NE(nullptr, vendor);
+    ASSERT_TRUE(source->ResizePartition(vendor, big_size));
+    // Create a hole between system and vendor
+    ASSERT_TRUE(source->ResizePartition(system, small_size));
+    auto source_metadata = source->Export();
+    ASSERT_NE(nullptr, source_metadata);
+    ASSERT_TRUE(FlashPartitionTable(opener, fake_super, *source_metadata.get()));
+
+    auto target = MetadataBuilder::NewForUpdate(opener, "super", 0, 1);
+    // Shrink vendor
+    vendor = target->FindPartition("vendor_b");
+    ASSERT_NE(nullptr, vendor);
+    ASSERT_TRUE(target->ResizePartition(vendor, small_size));
+    // Grow system to take hole & saved space from vendor
+    system = target->FindPartition("system_b");
+    ASSERT_NE(nullptr, system);
+    ASSERT_TRUE(target->ResizePartition(system, big_size * 2 - small_size));
+
+    PartitionCowCreator creator{.target_metadata = target.get(),
+                                .target_suffix = "_b",
+                                .target_partition = system,
+                                .current_metadata = source.get(),
+                                .current_suffix = "_a"};
+    auto ret = creator.Run();
+    ASSERT_TRUE(ret.has_value());
+}
+
+TEST_F(PartitionCowCreatorTest, CowSize) {
+    using InstallOperation = chromeos_update_engine::InstallOperation;
+    using RepeatedInstallOperationPtr = google::protobuf::RepeatedPtrField<InstallOperation>;
+    using Extent = chromeos_update_engine::Extent;
+
+    constexpr uint64_t initial_size = 50_MiB;
+    constexpr uint64_t final_size = 40_MiB;
+
+    auto builder_a = MetadataBuilder::New(initial_size, 1_KiB, 2);
+    ASSERT_NE(builder_a, nullptr);
+    auto system_a = builder_a->AddPartition("system_a", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(system_a, nullptr);
+    ASSERT_TRUE(builder_a->ResizePartition(system_a, final_size));
+
+    auto builder_b = MetadataBuilder::New(initial_size, 1_KiB, 2);
+    ASSERT_NE(builder_b, nullptr);
+    auto system_b = builder_b->AddPartition("system_b", LP_PARTITION_ATTR_READONLY);
+    ASSERT_NE(system_b, nullptr);
+    ASSERT_TRUE(builder_b->ResizePartition(system_b, final_size));
+
+    const uint64_t block_size = builder_b->logical_block_size();
+    const uint64_t chunk_size = kSnapshotChunkSize * dm::kSectorSize;
+    ASSERT_EQ(chunk_size, block_size);
+
+    auto cow_device_size = [](const std::vector<InstallOperation>& iopv, MetadataBuilder* builder_a,
+                              MetadataBuilder* builder_b, Partition* system_b) {
+        RepeatedInstallOperationPtr riop(iopv.begin(), iopv.end());
+        PartitionCowCreator creator{.target_metadata = builder_b,
+                                    .target_suffix = "_b",
+                                    .target_partition = system_b,
+                                    .current_metadata = builder_a,
+                                    .current_suffix = "_a",
+                                    .operations = &riop};
+
+        auto ret = creator.Run();
+
+        if (ret.has_value()) {
+            return ret->snapshot_status.cow_file_size() + ret->snapshot_status.cow_partition_size();
+        }
+        return std::numeric_limits<uint64_t>::max();
+    };
+
+    std::vector<InstallOperation> iopv;
+    InstallOperation iop;
+    Extent* e;
+
+    // No data written, no operations performed
+    ASSERT_EQ(2 * chunk_size, cow_device_size(iopv, builder_a.get(), builder_b.get(), system_b));
+
+    // No data written
+    e = iop.add_dst_extents();
+    e->set_start_block(0);
+    e->set_num_blocks(0);
+    iopv.push_back(iop);
+    ASSERT_EQ(2 * chunk_size, cow_device_size(iopv, builder_a.get(), builder_b.get(), system_b));
+
+    e = iop.add_dst_extents();
+    e->set_start_block(1);
+    e->set_num_blocks(0);
+    iopv.push_back(iop);
+    ASSERT_EQ(2 * chunk_size, cow_device_size(iopv, builder_a.get(), builder_b.get(), system_b));
+
+    // Fill the first block
+    e = iop.add_dst_extents();
+    e->set_start_block(0);
+    e->set_num_blocks(1);
+    iopv.push_back(iop);
+    ASSERT_EQ(3 * chunk_size, cow_device_size(iopv, builder_a.get(), builder_b.get(), system_b));
+
+    // Fill the second block
+    e = iop.add_dst_extents();
+    e->set_start_block(1);
+    e->set_num_blocks(1);
+    iopv.push_back(iop);
+    ASSERT_EQ(4 * chunk_size, cow_device_size(iopv, builder_a.get(), builder_b.get(), system_b));
+
+    // Jump to 5th block and write 2
+    e = iop.add_dst_extents();
+    e->set_start_block(5);
+    e->set_num_blocks(2);
+    iopv.push_back(iop);
+    ASSERT_EQ(6 * chunk_size, cow_device_size(iopv, builder_a.get(), builder_b.get(), system_b));
+}
+
+TEST(DmSnapshotInternals, CowSizeCalculator) {
+    SKIP_IF_NON_VIRTUAL_AB();
+
+    DmSnapCowSizeCalculator cc(512, 8);
+    unsigned long int b;
+
+    // Empty COW
+    ASSERT_EQ(cc.cow_size_sectors(), 16);
+
+    // First chunk written
+    for (b = 0; b < 4_KiB; ++b) {
+        cc.WriteByte(b);
+        ASSERT_EQ(cc.cow_size_sectors(), 24);
+    }
+
+    // Second chunk written
+    for (b = 4_KiB; b < 8_KiB; ++b) {
+        cc.WriteByte(b);
+        ASSERT_EQ(cc.cow_size_sectors(), 32);
+    }
+
+    // Leave a hole and write 5th chunk
+    for (b = 16_KiB; b < 20_KiB; ++b) {
+        cc.WriteByte(b);
+        ASSERT_EQ(cc.cow_size_sectors(), 40);
+    }
+}
+
+void BlocksToExtents(const std::vector<uint64_t>& blocks,
+                     google::protobuf::RepeatedPtrField<UeExtent>* extents) {
+    for (uint64_t block : blocks) {
+        AppendExtent(extents, block, 1);
+    }
+}
+
+template <typename T>
+std::vector<uint64_t> ExtentsToBlocks(const T& extents) {
+    std::vector<uint64_t> blocks;
+    for (const auto& extent : extents) {
+        for (uint64_t offset = 0; offset < extent.num_blocks(); ++offset) {
+            blocks.push_back(extent.start_block() + offset);
+        }
+    }
+    return blocks;
+}
+
+InstallOperation CreateCopyOp(const std::vector<uint64_t>& src_blocks,
+                              const std::vector<uint64_t>& dst_blocks) {
+    InstallOperation op;
+    op.set_type(InstallOperation::SOURCE_COPY);
+    BlocksToExtents(src_blocks, op.mutable_src_extents());
+    BlocksToExtents(dst_blocks, op.mutable_dst_extents());
+    return op;
+}
+
+// ExtentEqual(tuple<UeExtent, UeExtent>)
+MATCHER(ExtentEqual, "") {
+    auto&& [a, b] = arg;
+    return a.start_block() == b.start_block() && a.num_blocks() == b.num_blocks();
+}
+
+struct OptimizeOperationTestParam {
+    InstallOperation input;
+    std::optional<InstallOperation> expected_output;
+};
+
+class OptimizeOperationTest : public ::testing::TestWithParam<OptimizeOperationTestParam> {
+    void SetUp() override { SKIP_IF_NON_VIRTUAL_AB(); }
+};
+TEST_P(OptimizeOperationTest, Test) {
+    InstallOperation actual_output;
+    EXPECT_EQ(GetParam().expected_output.has_value(),
+              OptimizeSourceCopyOperation(GetParam().input, &actual_output))
+            << "OptimizeSourceCopyOperation should "
+            << (GetParam().expected_output.has_value() ? "succeed" : "fail");
+    if (!GetParam().expected_output.has_value()) return;
+    EXPECT_THAT(actual_output.src_extents(),
+                Pointwise(ExtentEqual(), GetParam().expected_output->src_extents()));
+    EXPECT_THAT(actual_output.dst_extents(),
+                Pointwise(ExtentEqual(), GetParam().expected_output->dst_extents()));
+}
+
+std::vector<OptimizeOperationTestParam> GetOptimizeOperationTestParams() {
+    return {
+            {CreateCopyOp({}, {}), CreateCopyOp({}, {})},
+            {CreateCopyOp({1, 2, 4}, {1, 2, 4}), CreateCopyOp({}, {})},
+            {CreateCopyOp({1, 2, 3}, {4, 5, 6}), std::nullopt},
+            {CreateCopyOp({3, 2}, {1, 2}), CreateCopyOp({3}, {1})},
+            {CreateCopyOp({5, 6, 3, 4, 1, 2}, {1, 2, 3, 4, 5, 6}),
+             CreateCopyOp({5, 6, 1, 2}, {1, 2, 5, 6})},
+            {CreateCopyOp({1, 2, 3, 5, 5, 6}, {5, 6, 3, 4, 1, 2}),
+             CreateCopyOp({1, 2, 5, 5, 6}, {5, 6, 4, 1, 2})},
+            {CreateCopyOp({1, 2, 5, 6, 9, 10}, {1, 4, 5, 6, 7, 8}),
+             CreateCopyOp({2, 9, 10}, {4, 7, 8})},
+            {CreateCopyOp({2, 3, 3, 4, 4}, {1, 2, 3, 4, 5}), CreateCopyOp({2, 3, 4}, {1, 2, 5})},
+    };
+}
+
+INSTANTIATE_TEST_CASE_P(Snapshot, OptimizeOperationTest,
+                        ::testing::ValuesIn(GetOptimizeOperationTestParams()));
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/return.cpp b/fs_mgr/libsnapshot/return.cpp
new file mode 100644
index 0000000..cc64af5
--- /dev/null
+++ b/fs_mgr/libsnapshot/return.cpp
@@ -0,0 +1,44 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <libsnapshot/return.h>
+
+#include <string.h>
+
+using android::fiemap::FiemapStatus;
+
+namespace android::snapshot {
+
+std::string Return::string() const {
+    switch (error_code()) {
+        case ErrorCode::ERROR:
+            return "Error";
+        case ErrorCode::SUCCESS:
+            [[fallthrough]];
+        case ErrorCode::NO_SPACE:
+            return strerror(-static_cast<int>(error_code()));
+    }
+}
+
+Return::ErrorCode Return::FromFiemapStatusErrorCode(FiemapStatus::ErrorCode error_code) {
+    switch (error_code) {
+        case FiemapStatus::ErrorCode::SUCCESS:
+        case FiemapStatus::ErrorCode::ERROR:
+        case FiemapStatus::ErrorCode::NO_SPACE:
+            return static_cast<ErrorCode>(error_code);
+        default:
+            return ErrorCode::ERROR;
+    }
+}
+}  // namespace android::snapshot
diff --git a/fs_mgr/libsnapshot/snapshot.cpp b/fs_mgr/libsnapshot/snapshot.cpp
new file mode 100644
index 0000000..4178349
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshot.cpp
@@ -0,0 +1,2783 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <libsnapshot/snapshot.h>
+
+#include <dirent.h>
+#include <math.h>
+#include <sys/file.h>
+#include <sys/types.h>
+#include <sys/unistd.h>
+
+#include <optional>
+#include <thread>
+#include <unordered_set>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <ext4_utils/ext4_utils.h>
+#include <fs_mgr.h>
+#include <fs_mgr_dm_linear.h>
+#include <fstab/fstab.h>
+#include <libdm/dm.h>
+#include <libfiemap/image_manager.h>
+#include <liblp/liblp.h>
+
+#include <android/snapshot/snapshot.pb.h>
+#include <libsnapshot/snapshot_stats.h>
+#include "device_info.h"
+#include "partition_cow_creator.h"
+#include "snapshot_metadata_updater.h"
+#include "utility.h"
+
+namespace android {
+namespace snapshot {
+
+using android::base::unique_fd;
+using android::dm::DeviceMapper;
+using android::dm::DmDeviceState;
+using android::dm::DmTable;
+using android::dm::DmTargetLinear;
+using android::dm::DmTargetSnapshot;
+using android::dm::kSectorSize;
+using android::dm::SnapshotStorageMode;
+using android::fiemap::FiemapStatus;
+using android::fiemap::IImageManager;
+using android::fs_mgr::CreateDmTable;
+using android::fs_mgr::CreateLogicalPartition;
+using android::fs_mgr::CreateLogicalPartitionParams;
+using android::fs_mgr::GetPartitionGroupName;
+using android::fs_mgr::GetPartitionName;
+using android::fs_mgr::LpMetadata;
+using android::fs_mgr::MetadataBuilder;
+using android::fs_mgr::SlotNumberForSlotSuffix;
+using android::hardware::boot::V1_1::MergeStatus;
+using chromeos_update_engine::DeltaArchiveManifest;
+using chromeos_update_engine::Extent;
+using chromeos_update_engine::InstallOperation;
+template <typename T>
+using RepeatedPtrField = google::protobuf::RepeatedPtrField<T>;
+using std::chrono::duration_cast;
+using namespace std::chrono_literals;
+using namespace std::string_literals;
+
+static constexpr char kBootIndicatorPath[] = "/metadata/ota/snapshot-boot";
+static constexpr char kRollbackIndicatorPath[] = "/metadata/ota/rollback-indicator";
+static constexpr auto kUpdateStateCheckInterval = 2s;
+
+// Note: IImageManager is an incomplete type in the header, so the default
+// destructor doesn't work.
+SnapshotManager::~SnapshotManager() {}
+
+std::unique_ptr<SnapshotManager> SnapshotManager::New(IDeviceInfo* info) {
+    if (!info) {
+        info = new DeviceInfo();
+    }
+    return std::unique_ptr<SnapshotManager>(new SnapshotManager(info));
+}
+
+std::unique_ptr<SnapshotManager> SnapshotManager::NewForFirstStageMount(IDeviceInfo* info) {
+    auto sm = New(info);
+    if (!sm || !sm->ForceLocalImageManager()) {
+        return nullptr;
+    }
+    return sm;
+}
+
+SnapshotManager::SnapshotManager(IDeviceInfo* device) : device_(device) {
+    gsid_dir_ = device_->GetGsidDir();
+    metadata_dir_ = device_->GetMetadataDir();
+}
+
+static std::string GetCowName(const std::string& snapshot_name) {
+    return snapshot_name + "-cow";
+}
+
+static std::string GetCowImageDeviceName(const std::string& snapshot_name) {
+    return snapshot_name + "-cow-img";
+}
+
+static std::string GetBaseDeviceName(const std::string& partition_name) {
+    return partition_name + "-base";
+}
+
+static std::string GetSnapshotExtraDeviceName(const std::string& snapshot_name) {
+    return snapshot_name + "-inner";
+}
+
+bool SnapshotManager::BeginUpdate() {
+    bool needs_merge = false;
+    if (!TryCancelUpdate(&needs_merge)) {
+        return false;
+    }
+    if (needs_merge) {
+        LOG(INFO) << "Wait for merge (if any) before beginning a new update.";
+        auto state = ProcessUpdateState();
+        LOG(INFO) << "Merged with state = " << state;
+    }
+
+    auto file = LockExclusive();
+    if (!file) return false;
+
+    // Purge the ImageManager just in case there is a corrupt lp_metadata file
+    // lying around. (NB: no need to return false on an error, we can let the
+    // update try to progress.)
+    if (EnsureImageManager()) {
+        images_->RemoveAllImages();
+    }
+
+    auto state = ReadUpdateState(file.get());
+    if (state != UpdateState::None) {
+        LOG(ERROR) << "An update is already in progress, cannot begin a new update";
+        return false;
+    }
+    return WriteUpdateState(file.get(), UpdateState::Initiated);
+}
+
+bool SnapshotManager::CancelUpdate() {
+    bool needs_merge = false;
+    if (!TryCancelUpdate(&needs_merge)) {
+        return false;
+    }
+    if (needs_merge) {
+        LOG(ERROR) << "Cannot cancel update after it has completed or started merging";
+    }
+    return !needs_merge;
+}
+
+bool SnapshotManager::TryCancelUpdate(bool* needs_merge) {
+    *needs_merge = false;
+
+    auto file = LockExclusive();
+    if (!file) return false;
+
+    UpdateState state = ReadUpdateState(file.get());
+    if (state == UpdateState::None) return true;
+
+    if (state == UpdateState::Initiated) {
+        LOG(INFO) << "Update has been initiated, now canceling";
+        return RemoveAllUpdateState(file.get());
+    }
+
+    if (state == UpdateState::Unverified) {
+        // We completed an update, but it can still be canceled if we haven't booted into it.
+        auto slot = GetCurrentSlot();
+        if (slot != Slot::Target) {
+            LOG(INFO) << "Canceling previously completed updates (if any)";
+            return RemoveAllUpdateState(file.get());
+        }
+    }
+    *needs_merge = true;
+    return true;
+}
+
+std::string SnapshotManager::ReadUpdateSourceSlotSuffix() {
+    auto boot_file = GetSnapshotBootIndicatorPath();
+    std::string contents;
+    if (!android::base::ReadFileToString(boot_file, &contents)) {
+        PLOG(WARNING) << "Cannot read " << boot_file;
+        return {};
+    }
+    return contents;
+}
+
+SnapshotManager::Slot SnapshotManager::GetCurrentSlot() {
+    auto contents = ReadUpdateSourceSlotSuffix();
+    if (contents.empty()) {
+        return Slot::Unknown;
+    }
+    if (device_->GetSlotSuffix() == contents) {
+        return Slot::Source;
+    }
+    return Slot::Target;
+}
+
+static bool RemoveFileIfExists(const std::string& path) {
+    std::string message;
+    if (!android::base::RemoveFileIfExists(path, &message)) {
+        LOG(ERROR) << "Remove failed: " << path << ": " << message;
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotManager::RemoveAllUpdateState(LockedFile* lock, const std::function<bool()>& prolog) {
+    if (prolog && !prolog()) {
+        LOG(WARNING) << "Can't RemoveAllUpdateState: prolog failed.";
+        return false;
+    }
+
+    LOG(INFO) << "Removing all update state.";
+
+    if (!RemoveAllSnapshots(lock)) {
+        LOG(ERROR) << "Could not remove all snapshots";
+        return false;
+    }
+
+    // It's okay if these fail:
+    // - For SnapshotBoot and Rollback, first-stage init performs a deeper check after
+    // reading the indicator file, so it's not a problem if it still exists
+    // after the update completes.
+    // - For ForwardMerge, FinishedSnapshotWrites asserts that the existence of the indicator
+    // matches the incoming update.
+    std::vector<std::string> files = {
+            GetSnapshotBootIndicatorPath(),
+            GetRollbackIndicatorPath(),
+            GetForwardMergeIndicatorPath(),
+    };
+    for (const auto& file : files) {
+        RemoveFileIfExists(file);
+    }
+
+    // If this fails, we'll keep trying to remove the update state (as the
+    // device reboots or starts a new update) until it finally succeeds.
+    return WriteUpdateState(lock, UpdateState::None);
+}
+
+bool SnapshotManager::FinishedSnapshotWrites(bool wipe) {
+    auto lock = LockExclusive();
+    if (!lock) return false;
+
+    auto update_state = ReadUpdateState(lock.get());
+    if (update_state == UpdateState::Unverified) {
+        LOG(INFO) << "FinishedSnapshotWrites already called before. Ignored.";
+        return true;
+    }
+
+    if (update_state != UpdateState::Initiated) {
+        LOG(ERROR) << "Can only transition to the Unverified state from the Initiated state.";
+        return false;
+    }
+
+    if (!EnsureNoOverflowSnapshot(lock.get())) {
+        LOG(ERROR) << "Cannot ensure there are no overflow snapshots.";
+        return false;
+    }
+
+    if (!UpdateForwardMergeIndicator(wipe)) {
+        return false;
+    }
+
+    // This file is written on boot to detect whether a rollback occurred. It
+    // MUST NOT exist before rebooting, otherwise, we're at risk of deleting
+    // snapshots too early.
+    if (!RemoveFileIfExists(GetRollbackIndicatorPath())) {
+        return false;
+    }
+
+    // This file acts as both a quick indicator for init (it can use access(2)
+    // to decide how to do first-stage mounts), and it stores the old slot, so
+    // we can tell whether or not we performed a rollback.
+    auto contents = device_->GetSlotSuffix();
+    auto boot_file = GetSnapshotBootIndicatorPath();
+    if (!WriteStringToFileAtomic(contents, boot_file)) {
+        PLOG(ERROR) << "write failed: " << boot_file;
+        return false;
+    }
+    return WriteUpdateState(lock.get(), UpdateState::Unverified);
+}
+
+bool SnapshotManager::CreateSnapshot(LockedFile* lock, SnapshotStatus* status) {
+    CHECK(lock);
+    CHECK(lock->lock_mode() == LOCK_EX);
+    CHECK(status);
+
+    if (status->name().empty()) {
+        LOG(ERROR) << "SnapshotStatus has no name.";
+        return false;
+    }
+    // Sanity check these sizes. Like liblp, we guarantee the partition size
+    // is respected, which means it has to be sector-aligned. (This guarantee
+    // is useful for locating avb footers correctly). The COW file size, however,
+    // can be arbitrarily larger than specified, so we can safely round it up.
+    if (status->device_size() % kSectorSize != 0) {
+        LOG(ERROR) << "Snapshot " << status->name()
+                   << " device size is not a multiple of the sector size: "
+                   << status->device_size();
+        return false;
+    }
+    if (status->snapshot_size() % kSectorSize != 0) {
+        LOG(ERROR) << "Snapshot " << status->name()
+                   << " snapshot size is not a multiple of the sector size: "
+                   << status->snapshot_size();
+        return false;
+    }
+    if (status->cow_partition_size() % kSectorSize != 0) {
+        LOG(ERROR) << "Snapshot " << status->name()
+                   << " cow partition size is not a multiple of the sector size: "
+                   << status->cow_partition_size();
+        return false;
+    }
+    if (status->cow_file_size() % kSectorSize != 0) {
+        LOG(ERROR) << "Snapshot " << status->name()
+                   << " cow file size is not a multiple of the sector size: "
+                   << status->cow_file_size();
+        return false;
+    }
+
+    status->set_state(SnapshotState::CREATED);
+    status->set_sectors_allocated(0);
+    status->set_metadata_sectors(0);
+
+    if (!WriteSnapshotStatus(lock, *status)) {
+        PLOG(ERROR) << "Could not write snapshot status: " << status->name();
+        return false;
+    }
+    return true;
+}
+
+Return SnapshotManager::CreateCowImage(LockedFile* lock, const std::string& name) {
+    CHECK(lock);
+    CHECK(lock->lock_mode() == LOCK_EX);
+    if (!EnsureImageManager()) return Return::Error();
+
+    SnapshotStatus status;
+    if (!ReadSnapshotStatus(lock, name, &status)) {
+        return Return::Error();
+    }
+
+    // The COW file size should have been rounded up to the nearest sector in CreateSnapshot.
+    // Sanity check this.
+    if (status.cow_file_size() % kSectorSize != 0) {
+        LOG(ERROR) << "Snapshot " << name << " COW file size is not a multiple of the sector size: "
+                   << status.cow_file_size();
+        return Return::Error();
+    }
+
+    std::string cow_image_name = GetCowImageDeviceName(name);
+    int cow_flags = IImageManager::CREATE_IMAGE_DEFAULT;
+    return Return(images_->CreateBackingImage(cow_image_name, status.cow_file_size(), cow_flags));
+}
+
+bool SnapshotManager::MapSnapshot(LockedFile* lock, const std::string& name,
+                                  const std::string& base_device, const std::string& cow_device,
+                                  const std::chrono::milliseconds& timeout_ms,
+                                  std::string* dev_path) {
+    CHECK(lock);
+
+    SnapshotStatus status;
+    if (!ReadSnapshotStatus(lock, name, &status)) {
+        return false;
+    }
+    if (status.state() == SnapshotState::NONE || status.state() == SnapshotState::MERGE_COMPLETED) {
+        LOG(ERROR) << "Should not create a snapshot device for " << name
+                   << " after merging has completed.";
+        return false;
+    }
+
+    // Validate the block device size, as well as the requested snapshot size.
+    // Note that during first-stage init, we don't have the device paths.
+    if (android::base::StartsWith(base_device, "/")) {
+        unique_fd fd(open(base_device.c_str(), O_RDONLY | O_CLOEXEC));
+        if (fd < 0) {
+            PLOG(ERROR) << "open failed: " << base_device;
+            return false;
+        }
+        auto dev_size = get_block_device_size(fd);
+        if (!dev_size) {
+            PLOG(ERROR) << "Could not determine block device size: " << base_device;
+            return false;
+        }
+        if (status.device_size() != dev_size) {
+            LOG(ERROR) << "Block device size for " << base_device << " does not match"
+                       << "(expected " << status.device_size() << ", got " << dev_size << ")";
+            return false;
+        }
+    }
+    if (status.device_size() % kSectorSize != 0) {
+        LOG(ERROR) << "invalid blockdev size for " << base_device << ": " << status.device_size();
+        return false;
+    }
+    if (status.snapshot_size() % kSectorSize != 0 ||
+        status.snapshot_size() > status.device_size()) {
+        LOG(ERROR) << "Invalid snapshot size for " << base_device << ": " << status.snapshot_size();
+        return false;
+    }
+    uint64_t snapshot_sectors = status.snapshot_size() / kSectorSize;
+    uint64_t linear_sectors = (status.device_size() - status.snapshot_size()) / kSectorSize;
+
+    auto& dm = DeviceMapper::Instance();
+
+    // Note that merging is a global state. We do track whether individual devices
+    // have completed merging, but the start of the merge process is considered
+    // atomic.
+    SnapshotStorageMode mode;
+    switch (ReadUpdateState(lock)) {
+        case UpdateState::MergeCompleted:
+        case UpdateState::MergeNeedsReboot:
+            LOG(ERROR) << "Should not create a snapshot device for " << name
+                       << " after global merging has completed.";
+            return false;
+        case UpdateState::Merging:
+        case UpdateState::MergeFailed:
+            // Note: MergeFailed indicates that a merge is in progress, but
+            // is possibly stalled. We still have to honor the merge.
+            mode = SnapshotStorageMode::Merge;
+            break;
+        default:
+            mode = SnapshotStorageMode::Persistent;
+            break;
+    }
+
+    // The kernel (tested on 4.19) crashes horribly if a device has both a snapshot
+    // and a linear target in the same table. Instead, we stack them, and give the
+    // snapshot device a different name. It is not exposed to the caller in this
+    // case.
+    auto snap_name = (linear_sectors > 0) ? GetSnapshotExtraDeviceName(name) : name;
+
+    DmTable table;
+    table.Emplace<DmTargetSnapshot>(0, snapshot_sectors, base_device, cow_device, mode,
+                                    kSnapshotChunkSize);
+    if (!dm.CreateDevice(snap_name, table, dev_path, timeout_ms)) {
+        LOG(ERROR) << "Could not create snapshot device: " << snap_name;
+        return false;
+    }
+
+    if (linear_sectors) {
+        std::string snap_dev;
+        if (!dm.GetDeviceString(snap_name, &snap_dev)) {
+            LOG(ERROR) << "Cannot determine major/minor for: " << snap_name;
+            return false;
+        }
+
+        // Our stacking will looks like this:
+        //     [linear, linear] ; to snapshot, and non-snapshot region of base device
+        //     [snapshot-inner]
+        //     [base device]   [cow]
+        DmTable table;
+        table.Emplace<DmTargetLinear>(0, snapshot_sectors, snap_dev, 0);
+        table.Emplace<DmTargetLinear>(snapshot_sectors, linear_sectors, base_device,
+                                      snapshot_sectors);
+        if (!dm.CreateDevice(name, table, dev_path, timeout_ms)) {
+            LOG(ERROR) << "Could not create outer snapshot device: " << name;
+            dm.DeleteDevice(snap_name);
+            return false;
+        }
+    }
+
+    // :TODO: when merging is implemented, we need to add an argument to the
+    // status indicating how much progress is left to merge. (device-mapper
+    // does not retain the initial values, so we can't derive them.)
+    return true;
+}
+
+std::optional<std::string> SnapshotManager::MapCowImage(
+        const std::string& name, const std::chrono::milliseconds& timeout_ms) {
+    if (!EnsureImageManager()) return std::nullopt;
+    auto cow_image_name = GetCowImageDeviceName(name);
+
+    bool ok;
+    std::string cow_dev;
+    if (has_local_image_manager_) {
+        // If we forced a local image manager, it means we don't have binder,
+        // which means first-stage init. We must use device-mapper.
+        const auto& opener = device_->GetPartitionOpener();
+        ok = images_->MapImageWithDeviceMapper(opener, cow_image_name, &cow_dev);
+    } else {
+        ok = images_->MapImageDevice(cow_image_name, timeout_ms, &cow_dev);
+    }
+
+    if (ok) {
+        LOG(INFO) << "Mapped " << cow_image_name << " to " << cow_dev;
+        return cow_dev;
+    }
+    LOG(ERROR) << "Could not map image device: " << cow_image_name;
+    return std::nullopt;
+}
+
+bool SnapshotManager::UnmapSnapshot(LockedFile* lock, const std::string& name) {
+    CHECK(lock);
+
+    auto& dm = DeviceMapper::Instance();
+    if (!dm.DeleteDeviceIfExists(name)) {
+        LOG(ERROR) << "Could not delete snapshot device: " << name;
+        return false;
+    }
+
+    auto snapshot_extra_device = GetSnapshotExtraDeviceName(name);
+    if (!dm.DeleteDeviceIfExists(snapshot_extra_device)) {
+        LOG(ERROR) << "Could not delete snapshot inner device: " << snapshot_extra_device;
+        return false;
+    }
+
+    return true;
+}
+
+bool SnapshotManager::UnmapCowImage(const std::string& name) {
+    if (!EnsureImageManager()) return false;
+    return images_->UnmapImageIfExists(GetCowImageDeviceName(name));
+}
+
+bool SnapshotManager::DeleteSnapshot(LockedFile* lock, const std::string& name) {
+    CHECK(lock);
+    CHECK(lock->lock_mode() == LOCK_EX);
+    if (!EnsureImageManager()) return false;
+
+    if (!UnmapCowDevices(lock, name)) {
+        return false;
+    }
+
+    // We can't delete snapshots in recovery. The only way we'd try is it we're
+    // completing or canceling a merge in preparation for a data wipe, in which
+    // case, we don't care if the file sticks around.
+    if (device_->IsRecovery()) {
+        LOG(INFO) << "Skipping delete of snapshot " << name << " in recovery.";
+        return true;
+    }
+
+    auto cow_image_name = GetCowImageDeviceName(name);
+    if (images_->BackingImageExists(cow_image_name)) {
+        if (!images_->DeleteBackingImage(cow_image_name)) {
+            return false;
+        }
+    }
+
+    std::string error;
+    auto file_path = GetSnapshotStatusFilePath(name);
+    if (!android::base::RemoveFileIfExists(file_path, &error)) {
+        LOG(ERROR) << "Failed to remove status file " << file_path << ": " << error;
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotManager::InitiateMerge(uint64_t* cow_file_size) {
+    auto lock = LockExclusive();
+    if (!lock) return false;
+
+    UpdateState state = ReadUpdateState(lock.get());
+    if (state != UpdateState::Unverified) {
+        LOG(ERROR) << "Cannot begin a merge if an update has not been verified";
+        return false;
+    }
+
+    auto slot = GetCurrentSlot();
+    if (slot != Slot::Target) {
+        LOG(ERROR) << "Device cannot merge while not booting from new slot";
+        return false;
+    }
+
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(lock.get(), &snapshots)) {
+        LOG(ERROR) << "Could not list snapshots";
+        return false;
+    }
+
+    auto other_suffix = device_->GetOtherSlotSuffix();
+
+    auto& dm = DeviceMapper::Instance();
+    for (const auto& snapshot : snapshots) {
+        if (android::base::EndsWith(snapshot, other_suffix)) {
+            // Allow the merge to continue, but log this unexpected case.
+            LOG(ERROR) << "Unexpected snapshot found during merge: " << snapshot;
+            continue;
+        }
+
+        // The device has to be mapped, since everything should be merged at
+        // the same time. This is a fairly serious error. We could forcefully
+        // map everything here, but it should have been mapped during first-
+        // stage init.
+        if (dm.GetState(snapshot) == DmDeviceState::INVALID) {
+            LOG(ERROR) << "Cannot begin merge; device " << snapshot << " is not mapped.";
+            return false;
+        }
+    }
+
+    auto metadata = ReadCurrentMetadata();
+    for (auto it = snapshots.begin(); it != snapshots.end();) {
+        switch (GetMetadataPartitionState(*metadata, *it)) {
+            case MetadataPartitionState::Flashed:
+                LOG(WARNING) << "Detected re-flashing for partition " << *it
+                             << ". Skip merging it.";
+                [[fallthrough]];
+            case MetadataPartitionState::None: {
+                LOG(WARNING) << "Deleting snapshot for partition " << *it;
+                if (!DeleteSnapshot(lock.get(), *it)) {
+                    LOG(WARNING) << "Cannot delete snapshot for partition " << *it
+                                 << ". Skip merging it anyways.";
+                }
+                it = snapshots.erase(it);
+            } break;
+            case MetadataPartitionState::Updated: {
+                ++it;
+            } break;
+        }
+    }
+
+    uint64_t total_cow_file_size = 0;
+    DmTargetSnapshot::Status initial_target_values = {};
+    for (const auto& snapshot : snapshots) {
+        DmTargetSnapshot::Status current_status;
+        if (!QuerySnapshotStatus(snapshot, nullptr, &current_status)) {
+            return false;
+        }
+        initial_target_values.sectors_allocated += current_status.sectors_allocated;
+        initial_target_values.total_sectors += current_status.total_sectors;
+        initial_target_values.metadata_sectors += current_status.metadata_sectors;
+
+        SnapshotStatus snapshot_status;
+        if (!ReadSnapshotStatus(lock.get(), snapshot, &snapshot_status)) {
+            return false;
+        }
+        total_cow_file_size += snapshot_status.cow_file_size();
+    }
+
+    if (cow_file_size) {
+        *cow_file_size = total_cow_file_size;
+    }
+
+    SnapshotUpdateStatus initial_status;
+    initial_status.set_state(UpdateState::Merging);
+    initial_status.set_sectors_allocated(initial_target_values.sectors_allocated);
+    initial_status.set_total_sectors(initial_target_values.total_sectors);
+    initial_status.set_metadata_sectors(initial_target_values.metadata_sectors);
+
+    // Point of no return - mark that we're starting a merge. From now on every
+    // snapshot must be a merge target.
+    if (!WriteSnapshotUpdateStatus(lock.get(), initial_status)) {
+        return false;
+    }
+
+    bool rewrote_all = true;
+    for (const auto& snapshot : snapshots) {
+        // If this fails, we have no choice but to continue. Everything must
+        // be merged. This is not an ideal state to be in, but it is safe,
+        // because we the next boot will try again.
+        if (!SwitchSnapshotToMerge(lock.get(), snapshot)) {
+            LOG(ERROR) << "Failed to switch snapshot to a merge target: " << snapshot;
+            rewrote_all = false;
+        }
+    }
+
+    // If we couldn't switch everything to a merge target, pre-emptively mark
+    // this merge as failed. It will get acknowledged when WaitForMerge() is
+    // called.
+    if (!rewrote_all) {
+        WriteUpdateState(lock.get(), UpdateState::MergeFailed);
+    }
+
+    // Return true no matter what, because a merge was initiated.
+    return true;
+}
+
+bool SnapshotManager::SwitchSnapshotToMerge(LockedFile* lock, const std::string& name) {
+    SnapshotStatus status;
+    if (!ReadSnapshotStatus(lock, name, &status)) {
+        return false;
+    }
+    if (status.state() != SnapshotState::CREATED) {
+        LOG(WARNING) << "Snapshot " << name
+                     << " has unexpected state: " << SnapshotState_Name(status.state());
+    }
+
+    // After this, we return true because we technically did switch to a merge
+    // target. Everything else we do here is just informational.
+    auto dm_name = GetSnapshotDeviceName(name, status);
+    if (!RewriteSnapshotDeviceTable(dm_name)) {
+        return false;
+    }
+
+    status.set_state(SnapshotState::MERGING);
+
+    DmTargetSnapshot::Status dm_status;
+    if (!QuerySnapshotStatus(dm_name, nullptr, &dm_status)) {
+        LOG(ERROR) << "Could not query merge status for snapshot: " << dm_name;
+    }
+    status.set_sectors_allocated(dm_status.sectors_allocated);
+    status.set_metadata_sectors(dm_status.metadata_sectors);
+    if (!WriteSnapshotStatus(lock, status)) {
+        LOG(ERROR) << "Could not update status file for snapshot: " << name;
+    }
+    return true;
+}
+
+bool SnapshotManager::RewriteSnapshotDeviceTable(const std::string& dm_name) {
+    auto& dm = DeviceMapper::Instance();
+
+    std::vector<DeviceMapper::TargetInfo> old_targets;
+    if (!dm.GetTableInfo(dm_name, &old_targets)) {
+        LOG(ERROR) << "Could not read snapshot device table: " << dm_name;
+        return false;
+    }
+    if (old_targets.size() != 1 || DeviceMapper::GetTargetType(old_targets[0].spec) != "snapshot") {
+        LOG(ERROR) << "Unexpected device-mapper table for snapshot: " << dm_name;
+        return false;
+    }
+
+    std::string base_device, cow_device;
+    if (!DmTargetSnapshot::GetDevicesFromParams(old_targets[0].data, &base_device, &cow_device)) {
+        LOG(ERROR) << "Could not derive underlying devices for snapshot: " << dm_name;
+        return false;
+    }
+
+    DmTable table;
+    table.Emplace<DmTargetSnapshot>(0, old_targets[0].spec.length, base_device, cow_device,
+                                    SnapshotStorageMode::Merge, kSnapshotChunkSize);
+    if (!dm.LoadTableAndActivate(dm_name, table)) {
+        LOG(ERROR) << "Could not swap device-mapper tables on snapshot device " << dm_name;
+        return false;
+    }
+    LOG(INFO) << "Successfully switched snapshot device to a merge target: " << dm_name;
+    return true;
+}
+
+enum class TableQuery {
+    Table,
+    Status,
+};
+
+static bool GetSingleTarget(const std::string& dm_name, TableQuery query,
+                            DeviceMapper::TargetInfo* target) {
+    auto& dm = DeviceMapper::Instance();
+    if (dm.GetState(dm_name) == DmDeviceState::INVALID) {
+        return false;
+    }
+
+    std::vector<DeviceMapper::TargetInfo> targets;
+    bool result;
+    if (query == TableQuery::Status) {
+        result = dm.GetTableStatus(dm_name, &targets);
+    } else {
+        result = dm.GetTableInfo(dm_name, &targets);
+    }
+    if (!result) {
+        LOG(ERROR) << "Could not query device: " << dm_name;
+        return false;
+    }
+    if (targets.size() != 1) {
+        return false;
+    }
+
+    *target = std::move(targets[0]);
+    return true;
+}
+
+bool SnapshotManager::IsSnapshotDevice(const std::string& dm_name, TargetInfo* target) {
+    DeviceMapper::TargetInfo snap_target;
+    if (!GetSingleTarget(dm_name, TableQuery::Status, &snap_target)) {
+        return false;
+    }
+    auto type = DeviceMapper::GetTargetType(snap_target.spec);
+    if (type != "snapshot" && type != "snapshot-merge") {
+        return false;
+    }
+    if (target) {
+        *target = std::move(snap_target);
+    }
+    return true;
+}
+
+bool SnapshotManager::QuerySnapshotStatus(const std::string& dm_name, std::string* target_type,
+                                          DmTargetSnapshot::Status* status) {
+    DeviceMapper::TargetInfo target;
+    if (!IsSnapshotDevice(dm_name, &target)) {
+        LOG(ERROR) << "Device " << dm_name << " is not a snapshot or snapshot-merge device";
+        return false;
+    }
+    if (!DmTargetSnapshot::ParseStatusText(target.data, status)) {
+        LOG(ERROR) << "Could not parse snapshot status text: " << dm_name;
+        return false;
+    }
+    if (target_type) {
+        *target_type = DeviceMapper::GetTargetType(target.spec);
+    }
+    return true;
+}
+
+// Note that when a merge fails, we will *always* try again to complete the
+// merge each time the device boots. There is no harm in doing so, and if
+// the problem was transient, we might manage to get a new outcome.
+UpdateState SnapshotManager::ProcessUpdateState(const std::function<bool()>& callback,
+                                                const std::function<bool()>& before_cancel) {
+    while (true) {
+        UpdateState state = CheckMergeState(before_cancel);
+        if (state == UpdateState::MergeFailed) {
+            AcknowledgeMergeFailure();
+        }
+        if (state != UpdateState::Merging) {
+            // Either there is no merge, or the merge was finished, so no need
+            // to keep waiting.
+            return state;
+        }
+
+        if (callback && !callback()) {
+            return state;
+        }
+
+        // This wait is not super time sensitive, so we have a relatively
+        // low polling frequency.
+        std::this_thread::sleep_for(kUpdateStateCheckInterval);
+    }
+}
+
+UpdateState SnapshotManager::CheckMergeState(const std::function<bool()>& before_cancel) {
+    auto lock = LockExclusive();
+    if (!lock) {
+        return UpdateState::MergeFailed;
+    }
+
+    UpdateState state = CheckMergeState(lock.get(), before_cancel);
+    if (state == UpdateState::MergeCompleted) {
+        // Do this inside the same lock. Failures get acknowledged without the
+        // lock, because flock() might have failed.
+        AcknowledgeMergeSuccess(lock.get());
+    } else if (state == UpdateState::Cancelled) {
+        if (!RemoveAllUpdateState(lock.get(), before_cancel)) {
+            return ReadSnapshotUpdateStatus(lock.get()).state();
+        }
+    }
+    return state;
+}
+
+UpdateState SnapshotManager::CheckMergeState(LockedFile* lock,
+                                             const std::function<bool()>& before_cancel) {
+    UpdateState state = ReadUpdateState(lock);
+    switch (state) {
+        case UpdateState::None:
+        case UpdateState::MergeCompleted:
+            // Harmless races are allowed between two callers of WaitForMerge,
+            // so in both of these cases we just propagate the state.
+            return state;
+
+        case UpdateState::Merging:
+        case UpdateState::MergeNeedsReboot:
+        case UpdateState::MergeFailed:
+            // We'll poll each snapshot below. Note that for the NeedsReboot
+            // case, we always poll once to give cleanup another opportunity to
+            // run.
+            break;
+
+        case UpdateState::Unverified:
+            // This is an edge case. Normally cancelled updates are detected
+            // via the merge poll below, but if we never started a merge, we
+            // need to also check here.
+            if (HandleCancelledUpdate(lock, before_cancel)) {
+                return UpdateState::Cancelled;
+            }
+            return state;
+
+        default:
+            return state;
+    }
+
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(lock, &snapshots)) {
+        return UpdateState::MergeFailed;
+    }
+
+    bool cancelled = false;
+    bool failed = false;
+    bool merging = false;
+    bool needs_reboot = false;
+    for (const auto& snapshot : snapshots) {
+        UpdateState snapshot_state = CheckTargetMergeState(lock, snapshot);
+        switch (snapshot_state) {
+            case UpdateState::MergeFailed:
+                failed = true;
+                break;
+            case UpdateState::Merging:
+                merging = true;
+                break;
+            case UpdateState::MergeNeedsReboot:
+                needs_reboot = true;
+                break;
+            case UpdateState::MergeCompleted:
+                break;
+            case UpdateState::Cancelled:
+                cancelled = true;
+                break;
+            default:
+                LOG(ERROR) << "Unknown merge status for \"" << snapshot << "\": "
+                           << "\"" << snapshot_state << "\"";
+                failed = true;
+                break;
+        }
+    }
+
+    if (merging) {
+        // Note that we handle "Merging" before we handle anything else. We
+        // want to poll until *nothing* is merging if we can, so everything has
+        // a chance to get marked as completed or failed.
+        return UpdateState::Merging;
+    }
+    if (failed) {
+        // Note: since there are many drop-out cases for failure, we acknowledge
+        // it in WaitForMerge rather than here and elsewhere.
+        return UpdateState::MergeFailed;
+    }
+    if (needs_reboot) {
+        WriteUpdateState(lock, UpdateState::MergeNeedsReboot);
+        return UpdateState::MergeNeedsReboot;
+    }
+    if (cancelled) {
+        // This is an edge case, that we handle as correctly as we sensibly can.
+        // The underlying partition has changed behind update_engine, and we've
+        // removed the snapshot as a result. The exact state of the update is
+        // undefined now, but this can only happen on an unlocked device where
+        // partitions can be flashed without wiping userdata.
+        return UpdateState::Cancelled;
+    }
+    return UpdateState::MergeCompleted;
+}
+
+UpdateState SnapshotManager::CheckTargetMergeState(LockedFile* lock, const std::string& name) {
+    SnapshotStatus snapshot_status;
+    if (!ReadSnapshotStatus(lock, name, &snapshot_status)) {
+        return UpdateState::MergeFailed;
+    }
+
+    std::string dm_name = GetSnapshotDeviceName(name, snapshot_status);
+
+    std::unique_ptr<LpMetadata> current_metadata;
+
+    if (!IsSnapshotDevice(dm_name)) {
+        if (!current_metadata) {
+            current_metadata = ReadCurrentMetadata();
+        }
+
+        if (!current_metadata ||
+            GetMetadataPartitionState(*current_metadata, name) != MetadataPartitionState::Updated) {
+            DeleteSnapshot(lock, name);
+            return UpdateState::Cancelled;
+        }
+
+        // During a check, we decided the merge was complete, but we were unable to
+        // collapse the device-mapper stack and perform COW cleanup. If we haven't
+        // rebooted after this check, the device will still be a snapshot-merge
+        // target. If the have rebooted, the device will now be a linear target,
+        // and we can try cleanup again.
+        if (snapshot_status.state() == SnapshotState::MERGE_COMPLETED) {
+            // NB: It's okay if this fails now, we gave cleanup our best effort.
+            OnSnapshotMergeComplete(lock, name, snapshot_status);
+            return UpdateState::MergeCompleted;
+        }
+
+        LOG(ERROR) << "Expected snapshot or snapshot-merge for device: " << dm_name;
+        return UpdateState::MergeFailed;
+    }
+
+    // This check is expensive so it is only enabled for debugging.
+    DCHECK((current_metadata = ReadCurrentMetadata()) &&
+           GetMetadataPartitionState(*current_metadata, name) == MetadataPartitionState::Updated);
+
+    std::string target_type;
+    DmTargetSnapshot::Status status;
+    if (!QuerySnapshotStatus(dm_name, &target_type, &status)) {
+        return UpdateState::MergeFailed;
+    }
+    if (target_type != "snapshot-merge") {
+        // We can get here if we failed to rewrite the target type in
+        // InitiateMerge(). If we failed to create the target in first-stage
+        // init, boot would not succeed.
+        LOG(ERROR) << "Snapshot " << name << " has incorrect target type: " << target_type;
+        return UpdateState::MergeFailed;
+    }
+
+    // These two values are equal when merging is complete.
+    if (status.sectors_allocated != status.metadata_sectors) {
+        if (snapshot_status.state() == SnapshotState::MERGE_COMPLETED) {
+            LOG(ERROR) << "Snapshot " << name << " is merging after being marked merge-complete.";
+            return UpdateState::MergeFailed;
+        }
+        return UpdateState::Merging;
+    }
+
+    // Merging is done. First, update the status file to indicate the merge
+    // is complete. We do this before calling OnSnapshotMergeComplete, even
+    // though this means the write is potentially wasted work (since in the
+    // ideal case we'll immediately delete the file).
+    //
+    // This makes it simpler to reason about the next reboot: no matter what
+    // part of cleanup failed, first-stage init won't try to create another
+    // snapshot device for this partition.
+    snapshot_status.set_state(SnapshotState::MERGE_COMPLETED);
+    if (!WriteSnapshotStatus(lock, snapshot_status)) {
+        return UpdateState::MergeFailed;
+    }
+    if (!OnSnapshotMergeComplete(lock, name, snapshot_status)) {
+        return UpdateState::MergeNeedsReboot;
+    }
+    return UpdateState::MergeCompleted;
+}
+
+std::string SnapshotManager::GetSnapshotBootIndicatorPath() {
+    return metadata_dir_ + "/" + android::base::Basename(kBootIndicatorPath);
+}
+
+std::string SnapshotManager::GetRollbackIndicatorPath() {
+    return metadata_dir_ + "/" + android::base::Basename(kRollbackIndicatorPath);
+}
+
+std::string SnapshotManager::GetForwardMergeIndicatorPath() {
+    return metadata_dir_ + "/allow-forward-merge";
+}
+
+void SnapshotManager::AcknowledgeMergeSuccess(LockedFile* lock) {
+    // It's not possible to remove update state in recovery, so write an
+    // indicator that cleanup is needed on reboot. If a factory data reset
+    // was requested, it doesn't matter, everything will get wiped anyway.
+    // To make testing easier we consider a /data wipe as cleaned up.
+    if (device_->IsRecovery() && !in_factory_data_reset_) {
+        WriteUpdateState(lock, UpdateState::MergeCompleted);
+        return;
+    }
+
+    RemoveAllUpdateState(lock);
+}
+
+void SnapshotManager::AcknowledgeMergeFailure() {
+    // Log first, so worst case, we always have a record of why the calls below
+    // were being made.
+    LOG(ERROR) << "Merge could not be completed and will be marked as failed.";
+
+    auto lock = LockExclusive();
+    if (!lock) return;
+
+    // Since we released the lock in between WaitForMerge and here, it's
+    // possible (1) the merge successfully completed or (2) was already
+    // marked as a failure. So make sure to check the state again, and
+    // only mark as a failure if appropriate.
+    UpdateState state = ReadUpdateState(lock.get());
+    if (state != UpdateState::Merging && state != UpdateState::MergeNeedsReboot) {
+        return;
+    }
+
+    WriteUpdateState(lock.get(), UpdateState::MergeFailed);
+}
+
+bool SnapshotManager::OnSnapshotMergeComplete(LockedFile* lock, const std::string& name,
+                                              const SnapshotStatus& status) {
+    auto dm_name = GetSnapshotDeviceName(name, status);
+    if (IsSnapshotDevice(dm_name)) {
+        // We are extra-cautious here, to avoid deleting the wrong table.
+        std::string target_type;
+        DmTargetSnapshot::Status dm_status;
+        if (!QuerySnapshotStatus(dm_name, &target_type, &dm_status)) {
+            return false;
+        }
+        if (target_type != "snapshot-merge") {
+            LOG(ERROR) << "Unexpected target type " << target_type
+                       << " for snapshot device: " << dm_name;
+            return false;
+        }
+        if (dm_status.sectors_allocated != dm_status.metadata_sectors) {
+            LOG(ERROR) << "Merge is unexpectedly incomplete for device " << dm_name;
+            return false;
+        }
+        if (!CollapseSnapshotDevice(name, status)) {
+            LOG(ERROR) << "Unable to collapse snapshot: " << name;
+            return false;
+        }
+        // Note that collapsing is implicitly an Unmap, so we don't need to
+        // unmap the snapshot.
+    }
+
+    if (!DeleteSnapshot(lock, name)) {
+        LOG(ERROR) << "Could not delete snapshot: " << name;
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotManager::CollapseSnapshotDevice(const std::string& name,
+                                             const SnapshotStatus& status) {
+    auto& dm = DeviceMapper::Instance();
+    auto dm_name = GetSnapshotDeviceName(name, status);
+
+    // Verify we have a snapshot-merge device.
+    DeviceMapper::TargetInfo target;
+    if (!GetSingleTarget(dm_name, TableQuery::Table, &target)) {
+        return false;
+    }
+    if (DeviceMapper::GetTargetType(target.spec) != "snapshot-merge") {
+        // This should be impossible, it was checked earlier.
+        LOG(ERROR) << "Snapshot device has invalid target type: " << dm_name;
+        return false;
+    }
+
+    std::string base_device, cow_device;
+    if (!DmTargetSnapshot::GetDevicesFromParams(target.data, &base_device, &cow_device)) {
+        LOG(ERROR) << "Could not parse snapshot device " << dm_name
+                   << " parameters: " << target.data;
+        return false;
+    }
+
+    uint64_t snapshot_sectors = status.snapshot_size() / kSectorSize;
+    if (snapshot_sectors * kSectorSize != status.snapshot_size()) {
+        LOG(ERROR) << "Snapshot " << name
+                   << " size is not sector aligned: " << status.snapshot_size();
+        return false;
+    }
+
+    if (dm_name != name) {
+        // We've derived the base device, but we actually need to replace the
+        // table of the outermost device. Do a quick verification that this
+        // device looks like we expect it to.
+        std::vector<DeviceMapper::TargetInfo> outer_table;
+        if (!dm.GetTableInfo(name, &outer_table)) {
+            LOG(ERROR) << "Could not validate outer snapshot table: " << name;
+            return false;
+        }
+        if (outer_table.size() != 2) {
+            LOG(ERROR) << "Expected 2 dm-linear targets for table " << name
+                       << ", got: " << outer_table.size();
+            return false;
+        }
+        for (const auto& target : outer_table) {
+            auto target_type = DeviceMapper::GetTargetType(target.spec);
+            if (target_type != "linear") {
+                LOG(ERROR) << "Outer snapshot table may only contain linear targets, but " << name
+                           << " has target: " << target_type;
+                return false;
+            }
+        }
+        if (outer_table[0].spec.length != snapshot_sectors) {
+            LOG(ERROR) << "dm-snapshot " << name << " should have " << snapshot_sectors
+                       << " sectors, got: " << outer_table[0].spec.length;
+            return false;
+        }
+        uint64_t expected_device_sectors = status.device_size() / kSectorSize;
+        uint64_t actual_device_sectors = outer_table[0].spec.length + outer_table[1].spec.length;
+        if (expected_device_sectors != actual_device_sectors) {
+            LOG(ERROR) << "Outer device " << name << " should have " << expected_device_sectors
+                       << " sectors, got: " << actual_device_sectors;
+            return false;
+        }
+    }
+
+    uint32_t slot = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    // Create a DmTable that is identical to the base device.
+    CreateLogicalPartitionParams base_device_params{
+            .block_device = device_->GetSuperDevice(slot),
+            .metadata_slot = slot,
+            .partition_name = name,
+            .partition_opener = &device_->GetPartitionOpener(),
+    };
+    DmTable table;
+    if (!CreateDmTable(base_device_params, &table)) {
+        LOG(ERROR) << "Could not create a DmTable for partition: " << name;
+        return false;
+    }
+
+    // Note: we are replacing the *outer* table here, so we do not use dm_name.
+    if (!dm.LoadTableAndActivate(name, table)) {
+        return false;
+    }
+
+    // Attempt to delete the snapshot device if one still exists. Nothing
+    // should be depending on the device, and device-mapper should have
+    // flushed remaining I/O. We could in theory replace with dm-zero (or
+    // re-use the table above), but for now it's better to know why this
+    // would fail.
+    if (dm_name != name && !dm.DeleteDeviceIfExists(dm_name)) {
+        LOG(ERROR) << "Unable to delete snapshot device " << dm_name << ", COW cannot be "
+                   << "reclaimed until after reboot.";
+        return false;
+    }
+
+    // Cleanup the base device as well, since it is no longer used. This does
+    // not block cleanup.
+    auto base_name = GetBaseDeviceName(name);
+    if (!dm.DeleteDeviceIfExists(base_name)) {
+        LOG(ERROR) << "Unable to delete base device for snapshot: " << base_name;
+    }
+    return true;
+}
+
+bool SnapshotManager::HandleCancelledUpdate(LockedFile* lock,
+                                            const std::function<bool()>& before_cancel) {
+    auto slot = GetCurrentSlot();
+    if (slot == Slot::Unknown) {
+        return false;
+    }
+
+    // If all snapshots were reflashed, then cancel the entire update.
+    if (AreAllSnapshotsCancelled(lock)) {
+        LOG(WARNING) << "Detected re-flashing, cancelling unverified update.";
+        return RemoveAllUpdateState(lock, before_cancel);
+    }
+
+    // If update has been rolled back, then cancel the entire update.
+    // Client (update_engine) is responsible for doing additional cleanup work on its own states
+    // when ProcessUpdateState() returns UpdateState::Cancelled.
+    auto current_slot = GetCurrentSlot();
+    if (current_slot != Slot::Source) {
+        LOG(INFO) << "Update state is being processed while booting at " << current_slot
+                  << " slot, taking no action.";
+        return false;
+    }
+
+    // current_slot == Source. Attempt to detect rollbacks.
+    if (access(GetRollbackIndicatorPath().c_str(), F_OK) != 0) {
+        // This unverified update is not attempted. Take no action.
+        PLOG(INFO) << "Rollback indicator not detected. "
+                   << "Update state is being processed before reboot, taking no action.";
+        return false;
+    }
+
+    LOG(WARNING) << "Detected rollback, cancelling unverified update.";
+    return RemoveAllUpdateState(lock, before_cancel);
+}
+
+std::unique_ptr<LpMetadata> SnapshotManager::ReadCurrentMetadata() {
+    const auto& opener = device_->GetPartitionOpener();
+    uint32_t slot = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    auto super_device = device_->GetSuperDevice(slot);
+    auto metadata = android::fs_mgr::ReadMetadata(opener, super_device, slot);
+    if (!metadata) {
+        LOG(ERROR) << "Could not read dynamic partition metadata for device: " << super_device;
+        return nullptr;
+    }
+    return metadata;
+}
+
+SnapshotManager::MetadataPartitionState SnapshotManager::GetMetadataPartitionState(
+        const LpMetadata& metadata, const std::string& name) {
+    auto partition = android::fs_mgr::FindPartition(metadata, name);
+    if (!partition) return MetadataPartitionState::None;
+    if (partition->attributes & LP_PARTITION_ATTR_UPDATED) {
+        return MetadataPartitionState::Updated;
+    }
+    return MetadataPartitionState::Flashed;
+}
+
+bool SnapshotManager::AreAllSnapshotsCancelled(LockedFile* lock) {
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(lock, &snapshots)) {
+        LOG(WARNING) << "Failed to list snapshots to determine whether device has been flashed "
+                     << "after applying an update. Assuming no snapshots.";
+        // Let HandleCancelledUpdate resets UpdateState.
+        return true;
+    }
+
+    std::map<std::string, bool> flashing_status;
+
+    if (!GetSnapshotFlashingStatus(lock, snapshots, &flashing_status)) {
+        LOG(WARNING) << "Failed to determine whether partitions have been flashed. Not"
+                     << "removing update states.";
+        return false;
+    }
+
+    bool all_snapshots_cancelled = std::all_of(flashing_status.begin(), flashing_status.end(),
+                                               [](const auto& pair) { return pair.second; });
+
+    if (all_snapshots_cancelled) {
+        LOG(WARNING) << "All partitions are re-flashed after update, removing all update states.";
+    }
+    return all_snapshots_cancelled;
+}
+
+bool SnapshotManager::GetSnapshotFlashingStatus(LockedFile* lock,
+                                                const std::vector<std::string>& snapshots,
+                                                std::map<std::string, bool>* out) {
+    CHECK(lock);
+
+    auto source_slot_suffix = ReadUpdateSourceSlotSuffix();
+    if (source_slot_suffix.empty()) {
+        return false;
+    }
+    uint32_t source_slot = SlotNumberForSlotSuffix(source_slot_suffix);
+    uint32_t target_slot = (source_slot == 0) ? 1 : 0;
+
+    // Attempt to detect re-flashing on each partition.
+    // - If all partitions are re-flashed, we can proceed to cancel the whole update.
+    // - If only some of the partitions are re-flashed, snapshots for re-flashed partitions are
+    //   deleted. Caller is responsible for merging the rest of the snapshots.
+    // - If none of the partitions are re-flashed, caller is responsible for merging the snapshots.
+    //
+    // Note that we use target slot metadata, since if an OTA has been applied
+    // to the target slot, we can detect the UPDATED flag. Any kind of flash
+    // operation against dynamic partitions ensures that all copies of the
+    // metadata are in sync, so flashing all partitions on the source slot will
+    // remove the UPDATED flag on the target slot as well.
+    const auto& opener = device_->GetPartitionOpener();
+    auto super_device = device_->GetSuperDevice(target_slot);
+    auto metadata = android::fs_mgr::ReadMetadata(opener, super_device, target_slot);
+    if (!metadata) {
+        return false;
+    }
+
+    for (const auto& snapshot_name : snapshots) {
+        if (GetMetadataPartitionState(*metadata, snapshot_name) ==
+            MetadataPartitionState::Updated) {
+            out->emplace(snapshot_name, false);
+        } else {
+            // Delete snapshots for partitions that are re-flashed after the update.
+            LOG(WARNING) << "Detected re-flashing of partition " << snapshot_name << ".";
+            out->emplace(snapshot_name, true);
+        }
+    }
+    return true;
+}
+
+bool SnapshotManager::RemoveAllSnapshots(LockedFile* lock) {
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(lock, &snapshots)) {
+        LOG(ERROR) << "Could not list snapshots";
+        return false;
+    }
+
+    std::map<std::string, bool> flashing_status;
+    if (!GetSnapshotFlashingStatus(lock, snapshots, &flashing_status)) {
+        LOG(WARNING) << "Failed to get flashing status";
+    }
+
+    auto current_slot = GetCurrentSlot();
+    bool ok = true;
+    bool has_mapped_cow_images = false;
+    for (const auto& name : snapshots) {
+        // If booting off source slot, it is okay to unmap and delete all the snapshots.
+        // If boot indicator is missing, update state is None or Initiated, so
+        //   it is also okay to unmap and delete all the snapshots.
+        // If booting off target slot,
+        //  - should not unmap because:
+        //    - In Android mode, snapshots are not mapped, but
+        //      filesystems are mounting off dm-linear targets directly.
+        //    - In recovery mode, assume nothing is mapped, so it is optional to unmap.
+        //  - If partition is flashed or unknown, it is okay to delete snapshots.
+        //    Otherwise (UPDATED flag), only delete snapshots if they are not mapped
+        //    as dm-snapshot (for example, after merge completes).
+        bool should_unmap = current_slot != Slot::Target;
+        bool should_delete = ShouldDeleteSnapshot(lock, flashing_status, current_slot, name);
+
+        bool partition_ok = true;
+        if (should_unmap && !UnmapPartitionWithSnapshot(lock, name)) {
+            partition_ok = false;
+        }
+        if (partition_ok && should_delete && !DeleteSnapshot(lock, name)) {
+            partition_ok = false;
+        }
+
+        if (!partition_ok) {
+            // Remember whether or not we were able to unmap the cow image.
+            auto cow_image_device = GetCowImageDeviceName(name);
+            has_mapped_cow_images |=
+                    (EnsureImageManager() && images_->IsImageMapped(cow_image_device));
+
+            ok = false;
+        }
+    }
+
+    if (ok || !has_mapped_cow_images) {
+        // Delete any image artifacts as a precaution, in case an update is
+        // being cancelled due to some corrupted state in an lp_metadata file.
+        // Note that we do not do this if some cow images are still mapped,
+        // since we must not remove backing storage if it's in use.
+        if (!EnsureImageManager() || !images_->RemoveAllImages()) {
+            LOG(ERROR) << "Could not remove all snapshot artifacts";
+            return false;
+        }
+    }
+    return ok;
+}
+
+// See comments in RemoveAllSnapshots().
+bool SnapshotManager::ShouldDeleteSnapshot(LockedFile* lock,
+                                           const std::map<std::string, bool>& flashing_status,
+                                           Slot current_slot, const std::string& name) {
+    if (current_slot != Slot::Target) {
+        return true;
+    }
+    auto it = flashing_status.find(name);
+    if (it == flashing_status.end()) {
+        LOG(WARNING) << "Can't determine flashing status for " << name;
+        return true;
+    }
+    if (it->second) {
+        // partition flashed, okay to delete obsolete snapshots
+        return true;
+    }
+    // partition updated, only delete if not dm-snapshot
+    SnapshotStatus status;
+    if (!ReadSnapshotStatus(lock, name, &status)) {
+        LOG(WARNING) << "Unable to read snapshot status for " << name
+                     << ", guessing snapshot device name";
+        auto extra_name = GetSnapshotExtraDeviceName(name);
+        return !IsSnapshotDevice(name) && !IsSnapshotDevice(extra_name);
+    }
+    auto dm_name = GetSnapshotDeviceName(name, status);
+    return !IsSnapshotDevice(dm_name);
+}
+
+UpdateState SnapshotManager::GetUpdateState(double* progress) {
+    // If we've never started an update, the state file won't exist.
+    auto state_file = GetStateFilePath();
+    if (access(state_file.c_str(), F_OK) != 0 && errno == ENOENT) {
+        return UpdateState::None;
+    }
+
+    auto lock = LockShared();
+    if (!lock) {
+        return UpdateState::None;
+    }
+
+    SnapshotUpdateStatus update_status = ReadSnapshotUpdateStatus(lock.get());
+    auto state = update_status.state();
+    if (progress == nullptr) {
+        return state;
+    }
+
+    if (state == UpdateState::MergeCompleted) {
+        *progress = 100.0;
+        return state;
+    }
+
+    *progress = 0.0;
+    if (state != UpdateState::Merging) {
+        return state;
+    }
+
+    // Sum all the snapshot states as if the system consists of a single huge
+    // snapshots device, then compute the merge completion percentage of that
+    // device.
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(lock.get(), &snapshots)) {
+        LOG(ERROR) << "Could not list snapshots";
+        return state;
+    }
+
+    DmTargetSnapshot::Status fake_snapshots_status = {};
+    for (const auto& snapshot : snapshots) {
+        DmTargetSnapshot::Status current_status;
+
+        if (!QuerySnapshotStatus(snapshot, nullptr, &current_status)) continue;
+
+        fake_snapshots_status.sectors_allocated += current_status.sectors_allocated;
+        fake_snapshots_status.total_sectors += current_status.total_sectors;
+        fake_snapshots_status.metadata_sectors += current_status.metadata_sectors;
+    }
+
+    *progress = DmTargetSnapshot::MergePercent(fake_snapshots_status,
+                                               update_status.sectors_allocated());
+
+    return state;
+}
+
+bool SnapshotManager::ListSnapshots(LockedFile* lock, std::vector<std::string>* snapshots) {
+    CHECK(lock);
+
+    auto dir_path = metadata_dir_ + "/snapshots"s;
+    std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(dir_path.c_str()), closedir);
+    if (!dir) {
+        PLOG(ERROR) << "opendir failed: " << dir_path;
+        return false;
+    }
+
+    struct dirent* dp;
+    while ((dp = readdir(dir.get())) != nullptr) {
+        if (dp->d_type != DT_REG) continue;
+        snapshots->emplace_back(dp->d_name);
+    }
+    return true;
+}
+
+bool SnapshotManager::IsSnapshotManagerNeeded() {
+    return access(kBootIndicatorPath, F_OK) == 0;
+}
+
+std::string SnapshotManager::GetGlobalRollbackIndicatorPath() {
+    return kRollbackIndicatorPath;
+}
+
+bool SnapshotManager::NeedSnapshotsInFirstStageMount() {
+    // If we fail to read, we'll wind up using CreateLogicalPartitions, which
+    // will create devices that look like the old slot, except with extra
+    // content at the end of each device. This will confuse dm-verity, and
+    // ultimately we'll fail to boot. Why not make it a fatal error and have
+    // the reason be clearer? Because the indicator file still exists, and
+    // if this was FATAL, reverting to the old slot would be broken.
+    auto slot = GetCurrentSlot();
+
+    if (slot != Slot::Target) {
+        if (slot == Slot::Source) {
+            // Device is rebooting into the original slot, so mark this as a
+            // rollback.
+            auto path = GetRollbackIndicatorPath();
+            if (!android::base::WriteStringToFile("1", path)) {
+                PLOG(ERROR) << "Unable to write rollback indicator: " << path;
+            } else {
+                LOG(INFO) << "Rollback detected, writing rollback indicator to " << path;
+            }
+        }
+        LOG(INFO) << "Not booting from new slot. Will not mount snapshots.";
+        return false;
+    }
+
+    // If we can't read the update state, it's unlikely anything else will
+    // succeed, so this is a fatal error. We'll eventually exhaust boot
+    // attempts and revert to the old slot.
+    auto lock = LockShared();
+    if (!lock) {
+        LOG(FATAL) << "Could not read update state to determine snapshot status";
+        return false;
+    }
+    switch (ReadUpdateState(lock.get())) {
+        case UpdateState::Unverified:
+        case UpdateState::Merging:
+        case UpdateState::MergeFailed:
+            return true;
+        default:
+            return false;
+    }
+}
+
+bool SnapshotManager::CreateLogicalAndSnapshotPartitions(
+        const std::string& super_device, const std::chrono::milliseconds& timeout_ms) {
+    LOG(INFO) << "Creating logical partitions with snapshots as needed";
+
+    auto lock = LockExclusive();
+    if (!lock) return false;
+
+    const auto& opener = device_->GetPartitionOpener();
+    uint32_t slot = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    auto metadata = android::fs_mgr::ReadMetadata(opener, super_device, slot);
+    if (!metadata) {
+        LOG(ERROR) << "Could not read dynamic partition metadata for device: " << super_device;
+        return false;
+    }
+
+    for (const auto& partition : metadata->partitions) {
+        if (GetPartitionGroupName(metadata->groups[partition.group_index]) == kCowGroupName) {
+            LOG(INFO) << "Skip mapping partition " << GetPartitionName(partition) << " in group "
+                      << kCowGroupName;
+            continue;
+        }
+
+        CreateLogicalPartitionParams params = {
+                .block_device = super_device,
+                .metadata = metadata.get(),
+                .partition = &partition,
+                .partition_opener = &opener,
+                .timeout_ms = timeout_ms,
+        };
+        std::string ignore_path;
+        if (!MapPartitionWithSnapshot(lock.get(), std::move(params), &ignore_path)) {
+            return false;
+        }
+    }
+
+    LOG(INFO) << "Created logical partitions with snapshot.";
+    return true;
+}
+
+static std::chrono::milliseconds GetRemainingTime(
+        const std::chrono::milliseconds& timeout,
+        const std::chrono::time_point<std::chrono::steady_clock>& begin) {
+    // If no timeout is specified, execute all commands without specifying any timeout.
+    if (timeout.count() == 0) return std::chrono::milliseconds(0);
+    auto passed_time = std::chrono::steady_clock::now() - begin;
+    auto remaining_time = timeout - duration_cast<std::chrono::milliseconds>(passed_time);
+    if (remaining_time.count() <= 0) {
+        LOG(ERROR) << "MapPartitionWithSnapshot has reached timeout " << timeout.count() << "ms ("
+                   << remaining_time.count() << "ms remaining)";
+        // Return min() instead of remaining_time here because 0 is treated as a special value for
+        // no timeout, where the rest of the commands will still be executed.
+        return std::chrono::milliseconds::min();
+    }
+    return remaining_time;
+}
+
+bool SnapshotManager::MapPartitionWithSnapshot(LockedFile* lock,
+                                               CreateLogicalPartitionParams params,
+                                               std::string* path) {
+    auto begin = std::chrono::steady_clock::now();
+
+    CHECK(lock);
+    path->clear();
+
+    if (params.GetPartitionName() != params.GetDeviceName()) {
+        LOG(ERROR) << "Mapping snapshot with a different name is unsupported: partition_name = "
+                   << params.GetPartitionName() << ", device_name = " << params.GetDeviceName();
+        return false;
+    }
+
+    // Fill out fields in CreateLogicalPartitionParams so that we have more information (e.g. by
+    // reading super partition metadata).
+    CreateLogicalPartitionParams::OwnedData params_owned_data;
+    if (!params.InitDefaults(&params_owned_data)) {
+        return false;
+    }
+
+    if (!params.partition->num_extents) {
+        LOG(INFO) << "Skipping zero-length logical partition: " << params.GetPartitionName();
+        return true;  // leave path empty to indicate that nothing is mapped.
+    }
+
+    // Determine if there is a live snapshot for the SnapshotStatus of the partition; i.e. if the
+    // partition still has a snapshot that needs to be mapped.  If no live snapshot or merge
+    // completed, live_snapshot_status is set to nullopt.
+    std::optional<SnapshotStatus> live_snapshot_status;
+    do {
+        if (!(params.partition->attributes & LP_PARTITION_ATTR_UPDATED)) {
+            LOG(INFO) << "Detected re-flashing of partition, will skip snapshot: "
+                      << params.GetPartitionName();
+            break;
+        }
+        auto file_path = GetSnapshotStatusFilePath(params.GetPartitionName());
+        if (access(file_path.c_str(), F_OK) != 0) {
+            if (errno != ENOENT) {
+                PLOG(INFO) << "Can't map snapshot for " << params.GetPartitionName()
+                           << ": Can't access " << file_path;
+                return false;
+            }
+            break;
+        }
+        live_snapshot_status = std::make_optional<SnapshotStatus>();
+        if (!ReadSnapshotStatus(lock, params.GetPartitionName(), &*live_snapshot_status)) {
+            return false;
+        }
+        // No live snapshot if merge is completed.
+        if (live_snapshot_status->state() == SnapshotState::MERGE_COMPLETED) {
+            live_snapshot_status.reset();
+        }
+
+        if (live_snapshot_status->state() == SnapshotState::NONE ||
+            live_snapshot_status->cow_partition_size() + live_snapshot_status->cow_file_size() ==
+                    0) {
+            LOG(WARNING) << "Snapshot status for " << params.GetPartitionName()
+                         << " is invalid, ignoring: state = "
+                         << SnapshotState_Name(live_snapshot_status->state())
+                         << ", cow_partition_size = " << live_snapshot_status->cow_partition_size()
+                         << ", cow_file_size = " << live_snapshot_status->cow_file_size();
+            live_snapshot_status.reset();
+        }
+    } while (0);
+
+    if (live_snapshot_status.has_value()) {
+        // dm-snapshot requires the base device to be writable.
+        params.force_writable = true;
+        // Map the base device with a different name to avoid collision.
+        params.device_name = GetBaseDeviceName(params.GetPartitionName());
+    }
+
+    AutoDeviceList created_devices;
+
+    // Create the base device for the snapshot, or if there is no snapshot, the
+    // device itself. This device consists of the real blocks in the super
+    // partition that this logical partition occupies.
+    auto& dm = DeviceMapper::Instance();
+    std::string base_path;
+    if (!CreateLogicalPartition(params, &base_path)) {
+        LOG(ERROR) << "Could not create logical partition " << params.GetPartitionName()
+                   << " as device " << params.GetDeviceName();
+        return false;
+    }
+    created_devices.EmplaceBack<AutoUnmapDevice>(&dm, params.GetDeviceName());
+
+    if (!live_snapshot_status.has_value()) {
+        *path = base_path;
+        created_devices.Release();
+        return true;
+    }
+
+    // We don't have ueventd in first-stage init, so use device major:minor
+    // strings instead.
+    std::string base_device;
+    if (!dm.GetDeviceString(params.GetDeviceName(), &base_device)) {
+        LOG(ERROR) << "Could not determine major/minor for: " << params.GetDeviceName();
+        return false;
+    }
+
+    auto remaining_time = GetRemainingTime(params.timeout_ms, begin);
+    if (remaining_time.count() < 0) return false;
+
+    std::string cow_name;
+    CreateLogicalPartitionParams cow_params = params;
+    cow_params.timeout_ms = remaining_time;
+    if (!MapCowDevices(lock, cow_params, *live_snapshot_status, &created_devices, &cow_name)) {
+        return false;
+    }
+    std::string cow_device;
+    if (!GetMappedImageDeviceStringOrPath(cow_name, &cow_device)) {
+        LOG(ERROR) << "Could not determine major/minor for: " << cow_name;
+        return false;
+    }
+
+    remaining_time = GetRemainingTime(params.timeout_ms, begin);
+    if (remaining_time.count() < 0) return false;
+
+    if (!MapSnapshot(lock, params.GetPartitionName(), base_device, cow_device, remaining_time,
+                     path)) {
+        LOG(ERROR) << "Could not map snapshot for partition: " << params.GetPartitionName();
+        return false;
+    }
+    // No need to add params.GetPartitionName() to created_devices since it is immediately released.
+
+    created_devices.Release();
+
+    LOG(INFO) << "Mapped " << params.GetPartitionName() << " as snapshot device at " << *path;
+
+    return true;
+}
+
+bool SnapshotManager::UnmapPartitionWithSnapshot(LockedFile* lock,
+                                                 const std::string& target_partition_name) {
+    CHECK(lock);
+
+    if (!UnmapSnapshot(lock, target_partition_name)) {
+        return false;
+    }
+
+    if (!UnmapCowDevices(lock, target_partition_name)) {
+        return false;
+    }
+
+    auto& dm = DeviceMapper::Instance();
+    std::string base_name = GetBaseDeviceName(target_partition_name);
+    if (!dm.DeleteDeviceIfExists(base_name)) {
+        LOG(ERROR) << "Cannot delete base device: " << base_name;
+        return false;
+    }
+
+    LOG(INFO) << "Successfully unmapped snapshot " << target_partition_name;
+
+    return true;
+}
+
+bool SnapshotManager::MapCowDevices(LockedFile* lock, const CreateLogicalPartitionParams& params,
+                                    const SnapshotStatus& snapshot_status,
+                                    AutoDeviceList* created_devices, std::string* cow_name) {
+    CHECK(lock);
+    CHECK(snapshot_status.cow_partition_size() + snapshot_status.cow_file_size() > 0);
+    auto begin = std::chrono::steady_clock::now();
+
+    std::string partition_name = params.GetPartitionName();
+    std::string cow_image_name = GetCowImageDeviceName(partition_name);
+    *cow_name = GetCowName(partition_name);
+
+    auto& dm = DeviceMapper::Instance();
+
+    // Map COW image if necessary.
+    if (snapshot_status.cow_file_size() > 0) {
+        if (!EnsureImageManager()) return false;
+        auto remaining_time = GetRemainingTime(params.timeout_ms, begin);
+        if (remaining_time.count() < 0) return false;
+
+        if (!MapCowImage(partition_name, remaining_time).has_value()) {
+            LOG(ERROR) << "Could not map cow image for partition: " << partition_name;
+            return false;
+        }
+        created_devices->EmplaceBack<AutoUnmapImage>(images_.get(), cow_image_name);
+
+        // If no COW partition exists, just return the image alone.
+        if (snapshot_status.cow_partition_size() == 0) {
+            *cow_name = std::move(cow_image_name);
+            LOG(INFO) << "Mapped COW image for " << partition_name << " at " << *cow_name;
+            return true;
+        }
+    }
+
+    auto remaining_time = GetRemainingTime(params.timeout_ms, begin);
+    if (remaining_time.count() < 0) return false;
+
+    CHECK(snapshot_status.cow_partition_size() > 0);
+
+    // Create the DmTable for the COW device. It is the DmTable of the COW partition plus
+    // COW image device as the last extent.
+    CreateLogicalPartitionParams cow_partition_params = params;
+    cow_partition_params.partition = nullptr;
+    cow_partition_params.partition_name = *cow_name;
+    cow_partition_params.device_name.clear();
+    DmTable table;
+    if (!CreateDmTable(cow_partition_params, &table)) {
+        return false;
+    }
+    // If the COW image exists, append it as the last extent.
+    if (snapshot_status.cow_file_size() > 0) {
+        std::string cow_image_device;
+        if (!GetMappedImageDeviceStringOrPath(cow_image_name, &cow_image_device)) {
+            LOG(ERROR) << "Cannot determine major/minor for: " << cow_image_name;
+            return false;
+        }
+        auto cow_partition_sectors = snapshot_status.cow_partition_size() / kSectorSize;
+        auto cow_image_sectors = snapshot_status.cow_file_size() / kSectorSize;
+        table.Emplace<DmTargetLinear>(cow_partition_sectors, cow_image_sectors, cow_image_device,
+                                      0);
+    }
+
+    // We have created the DmTable now. Map it.
+    std::string cow_path;
+    if (!dm.CreateDevice(*cow_name, table, &cow_path, remaining_time)) {
+        LOG(ERROR) << "Could not create COW device: " << *cow_name;
+        return false;
+    }
+    created_devices->EmplaceBack<AutoUnmapDevice>(&dm, *cow_name);
+    LOG(INFO) << "Mapped COW device for " << params.GetPartitionName() << " at " << cow_path;
+    return true;
+}
+
+bool SnapshotManager::UnmapCowDevices(LockedFile* lock, const std::string& name) {
+    CHECK(lock);
+    if (!EnsureImageManager()) return false;
+
+    auto& dm = DeviceMapper::Instance();
+    auto cow_name = GetCowName(name);
+    if (!dm.DeleteDeviceIfExists(cow_name)) {
+        LOG(ERROR) << "Cannot unmap " << cow_name;
+        return false;
+    }
+
+    std::string cow_image_name = GetCowImageDeviceName(name);
+    if (!images_->UnmapImageIfExists(cow_image_name)) {
+        LOG(ERROR) << "Cannot unmap image " << cow_image_name;
+        return false;
+    }
+    return true;
+}
+
+auto SnapshotManager::OpenFile(const std::string& file, int lock_flags)
+        -> std::unique_ptr<LockedFile> {
+    unique_fd fd(open(file.c_str(), O_RDONLY | O_CLOEXEC | O_NOFOLLOW));
+    if (fd < 0) {
+        PLOG(ERROR) << "Open failed: " << file;
+        return nullptr;
+    }
+    if (lock_flags != 0 && TEMP_FAILURE_RETRY(flock(fd, lock_flags)) < 0) {
+        PLOG(ERROR) << "Acquire flock failed: " << file;
+        return nullptr;
+    }
+    // For simplicity, we want to CHECK that lock_mode == LOCK_EX, in some
+    // calls, so strip extra flags.
+    int lock_mode = lock_flags & (LOCK_EX | LOCK_SH);
+    return std::make_unique<LockedFile>(file, std::move(fd), lock_mode);
+}
+
+SnapshotManager::LockedFile::~LockedFile() {
+    if (TEMP_FAILURE_RETRY(flock(fd_, LOCK_UN)) < 0) {
+        PLOG(ERROR) << "Failed to unlock file: " << path_;
+    }
+}
+
+std::string SnapshotManager::GetStateFilePath() const {
+    return metadata_dir_ + "/state"s;
+}
+
+std::string SnapshotManager::GetMergeStateFilePath() const {
+    return metadata_dir_ + "/merge_state"s;
+}
+
+std::string SnapshotManager::GetLockPath() const {
+    return metadata_dir_;
+}
+
+std::unique_ptr<SnapshotManager::LockedFile> SnapshotManager::OpenLock(int lock_flags) {
+    auto lock_file = GetLockPath();
+    return OpenFile(lock_file, lock_flags);
+}
+
+std::unique_ptr<SnapshotManager::LockedFile> SnapshotManager::LockShared() {
+    return OpenLock(LOCK_SH);
+}
+
+std::unique_ptr<SnapshotManager::LockedFile> SnapshotManager::LockExclusive() {
+    return OpenLock(LOCK_EX);
+}
+
+static UpdateState UpdateStateFromString(const std::string& contents) {
+    if (contents.empty() || contents == "none") {
+        return UpdateState::None;
+    } else if (contents == "initiated") {
+        return UpdateState::Initiated;
+    } else if (contents == "unverified") {
+        return UpdateState::Unverified;
+    } else if (contents == "merging") {
+        return UpdateState::Merging;
+    } else if (contents == "merge-completed") {
+        return UpdateState::MergeCompleted;
+    } else if (contents == "merge-needs-reboot") {
+        return UpdateState::MergeNeedsReboot;
+    } else if (contents == "merge-failed") {
+        return UpdateState::MergeFailed;
+    } else if (contents == "cancelled") {
+        return UpdateState::Cancelled;
+    } else {
+        LOG(ERROR) << "Unknown merge state in update state file: \"" << contents << "\"";
+        return UpdateState::None;
+    }
+}
+
+std::ostream& operator<<(std::ostream& os, UpdateState state) {
+    switch (state) {
+        case UpdateState::None:
+            return os << "none";
+        case UpdateState::Initiated:
+            return os << "initiated";
+        case UpdateState::Unverified:
+            return os << "unverified";
+        case UpdateState::Merging:
+            return os << "merging";
+        case UpdateState::MergeCompleted:
+            return os << "merge-completed";
+        case UpdateState::MergeNeedsReboot:
+            return os << "merge-needs-reboot";
+        case UpdateState::MergeFailed:
+            return os << "merge-failed";
+        case UpdateState::Cancelled:
+            return os << "cancelled";
+        default:
+            LOG(ERROR) << "Unknown update state: " << static_cast<uint32_t>(state);
+            return os;
+    }
+}
+
+UpdateState SnapshotManager::ReadUpdateState(LockedFile* lock) {
+    SnapshotUpdateStatus status = ReadSnapshotUpdateStatus(lock);
+    return status.state();
+}
+
+SnapshotUpdateStatus SnapshotManager::ReadSnapshotUpdateStatus(LockedFile* lock) {
+    CHECK(lock);
+
+    SnapshotUpdateStatus status = {};
+    std::string contents;
+    if (!android::base::ReadFileToString(GetStateFilePath(), &contents)) {
+        PLOG(ERROR) << "Read state file failed";
+        status.set_state(UpdateState::None);
+        return status;
+    }
+
+    if (!status.ParseFromString(contents)) {
+        LOG(WARNING) << "Unable to parse state file as SnapshotUpdateStatus, using the old format";
+
+        // Try to rollback to legacy file to support devices that are
+        // currently using the old file format.
+        // TODO(b/147409432)
+        status.set_state(UpdateStateFromString(contents));
+    }
+
+    return status;
+}
+
+bool SnapshotManager::WriteUpdateState(LockedFile* lock, UpdateState state) {
+    SnapshotUpdateStatus status = {};
+    status.set_state(state);
+    return WriteSnapshotUpdateStatus(lock, status);
+}
+
+bool SnapshotManager::WriteSnapshotUpdateStatus(LockedFile* lock,
+                                                const SnapshotUpdateStatus& status) {
+    CHECK(lock);
+    CHECK(lock->lock_mode() == LOCK_EX);
+
+    std::string contents;
+    if (!status.SerializeToString(&contents)) {
+        LOG(ERROR) << "Unable to serialize SnapshotUpdateStatus.";
+        return false;
+    }
+
+#ifdef LIBSNAPSHOT_USE_HAL
+    auto merge_status = MergeStatus::UNKNOWN;
+    switch (status.state()) {
+        // The needs-reboot and completed cases imply that /data and /metadata
+        // can be safely wiped, so we don't report a merge status.
+        case UpdateState::None:
+        case UpdateState::MergeNeedsReboot:
+        case UpdateState::MergeCompleted:
+        case UpdateState::Initiated:
+            merge_status = MergeStatus::NONE;
+            break;
+        case UpdateState::Unverified:
+            merge_status = MergeStatus::SNAPSHOTTED;
+            break;
+        case UpdateState::Merging:
+        case UpdateState::MergeFailed:
+            merge_status = MergeStatus::MERGING;
+            break;
+        default:
+            // Note that Cancelled flows to here - it is never written, since
+            // it only communicates a transient state to the caller.
+            LOG(ERROR) << "Unexpected update status: " << status.state();
+            break;
+    }
+
+    bool set_before_write =
+            merge_status == MergeStatus::SNAPSHOTTED || merge_status == MergeStatus::MERGING;
+    if (set_before_write && !device_->SetBootControlMergeStatus(merge_status)) {
+        return false;
+    }
+#endif
+
+    if (!WriteStringToFileAtomic(contents, GetStateFilePath())) {
+        PLOG(ERROR) << "Could not write to state file";
+        return false;
+    }
+
+#ifdef LIBSNAPSHOT_USE_HAL
+    if (!set_before_write && !device_->SetBootControlMergeStatus(merge_status)) {
+        return false;
+    }
+#endif
+    return true;
+}
+
+std::string SnapshotManager::GetSnapshotStatusFilePath(const std::string& name) {
+    auto file = metadata_dir_ + "/snapshots/"s + name;
+    return file;
+}
+
+bool SnapshotManager::ReadSnapshotStatus(LockedFile* lock, const std::string& name,
+                                         SnapshotStatus* status) {
+    CHECK(lock);
+    auto path = GetSnapshotStatusFilePath(name);
+
+    unique_fd fd(open(path.c_str(), O_RDONLY | O_CLOEXEC | O_NOFOLLOW));
+    if (fd < 0) {
+        PLOG(ERROR) << "Open failed: " << path;
+        return false;
+    }
+
+    if (!status->ParseFromFileDescriptor(fd.get())) {
+        PLOG(ERROR) << "Unable to parse " << path << " as SnapshotStatus";
+        return false;
+    }
+
+    if (status->name() != name) {
+        LOG(WARNING) << "Found snapshot status named " << status->name() << " in " << path;
+        status->set_name(name);
+    }
+
+    return true;
+}
+
+bool SnapshotManager::WriteSnapshotStatus(LockedFile* lock, const SnapshotStatus& status) {
+    // The caller must take an exclusive lock to modify snapshots.
+    CHECK(lock);
+    CHECK(lock->lock_mode() == LOCK_EX);
+    CHECK(!status.name().empty());
+
+    auto path = GetSnapshotStatusFilePath(status.name());
+
+    std::string content;
+    if (!status.SerializeToString(&content)) {
+        LOG(ERROR) << "Unable to serialize SnapshotStatus for " << status.name();
+        return false;
+    }
+
+    if (!WriteStringToFileAtomic(content, path)) {
+        PLOG(ERROR) << "Unable to write SnapshotStatus to " << path;
+        return false;
+    }
+
+    return true;
+}
+
+std::string SnapshotManager::GetSnapshotDeviceName(const std::string& snapshot_name,
+                                                   const SnapshotStatus& status) {
+    if (status.device_size() != status.snapshot_size()) {
+        return GetSnapshotExtraDeviceName(snapshot_name);
+    }
+    return snapshot_name;
+}
+
+bool SnapshotManager::EnsureImageManager() {
+    if (images_) return true;
+
+    // For now, use a preset timeout.
+    images_ = android::fiemap::IImageManager::Open(gsid_dir_, 15000ms);
+    if (!images_) {
+        LOG(ERROR) << "Could not open ImageManager";
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotManager::ForceLocalImageManager() {
+    images_ = android::fiemap::ImageManager::Open(gsid_dir_);
+    if (!images_) {
+        LOG(ERROR) << "Could not open ImageManager";
+        return false;
+    }
+    has_local_image_manager_ = true;
+    return true;
+}
+
+static void UnmapAndDeleteCowPartition(MetadataBuilder* current_metadata) {
+    auto& dm = DeviceMapper::Instance();
+    std::vector<std::string> to_delete;
+    for (auto* existing_cow_partition : current_metadata->ListPartitionsInGroup(kCowGroupName)) {
+        if (!dm.DeleteDeviceIfExists(existing_cow_partition->name())) {
+            LOG(WARNING) << existing_cow_partition->name()
+                         << " cannot be unmapped and its space cannot be reclaimed";
+            continue;
+        }
+        to_delete.push_back(existing_cow_partition->name());
+    }
+    for (const auto& name : to_delete) {
+        current_metadata->RemovePartition(name);
+    }
+}
+
+static Return AddRequiredSpace(Return orig,
+                               const std::map<std::string, SnapshotStatus>& all_snapshot_status) {
+    if (orig.error_code() != Return::ErrorCode::NO_SPACE) {
+        return orig;
+    }
+    uint64_t sum = 0;
+    for (auto&& [name, status] : all_snapshot_status) {
+        sum += status.cow_file_size();
+    }
+    return Return::NoSpace(sum);
+}
+
+Return SnapshotManager::CreateUpdateSnapshots(const DeltaArchiveManifest& manifest) {
+    auto lock = LockExclusive();
+    if (!lock) return Return::Error();
+
+    // TODO(b/134949511): remove this check. Right now, with overlayfs mounted, the scratch
+    // partition takes up a big chunk of space in super, causing COW images to be created on
+    // retrofit Virtual A/B devices.
+    if (device_->IsOverlayfsSetup()) {
+        LOG(ERROR) << "Cannot create update snapshots with overlayfs setup. Run `adb enable-verity`"
+                   << ", reboot, then try again.";
+        return Return::Error();
+    }
+
+    const auto& opener = device_->GetPartitionOpener();
+    auto current_suffix = device_->GetSlotSuffix();
+    uint32_t current_slot = SlotNumberForSlotSuffix(current_suffix);
+    auto target_suffix = device_->GetOtherSlotSuffix();
+    uint32_t target_slot = SlotNumberForSlotSuffix(target_suffix);
+    auto current_super = device_->GetSuperDevice(current_slot);
+
+    auto current_metadata = MetadataBuilder::New(opener, current_super, current_slot);
+    if (current_metadata == nullptr) {
+        LOG(ERROR) << "Cannot create metadata builder.";
+        return Return::Error();
+    }
+
+    auto target_metadata =
+            MetadataBuilder::NewForUpdate(opener, current_super, current_slot, target_slot);
+    if (target_metadata == nullptr) {
+        LOG(ERROR) << "Cannot create target metadata builder.";
+        return Return::Error();
+    }
+
+    // Delete partitions with target suffix in |current_metadata|. Otherwise,
+    // partition_cow_creator recognizes these left-over partitions as used space.
+    for (const auto& group_name : current_metadata->ListGroups()) {
+        if (android::base::EndsWith(group_name, target_suffix)) {
+            current_metadata->RemoveGroupAndPartitions(group_name);
+        }
+    }
+
+    SnapshotMetadataUpdater metadata_updater(target_metadata.get(), target_slot, manifest);
+    if (!metadata_updater.Update()) {
+        LOG(ERROR) << "Cannot calculate new metadata.";
+        return Return::Error();
+    }
+
+    // Delete previous COW partitions in current_metadata so that PartitionCowCreator marks those as
+    // free regions.
+    UnmapAndDeleteCowPartition(current_metadata.get());
+
+    // Check that all these metadata is not retrofit dynamic partitions. Snapshots on
+    // devices with retrofit dynamic partitions does not make sense.
+    // This ensures that current_metadata->GetFreeRegions() uses the same device
+    // indices as target_metadata (i.e. 0 -> "super").
+    // This is also assumed in MapCowDevices() call below.
+    CHECK(current_metadata->GetBlockDevicePartitionName(0) == LP_METADATA_DEFAULT_PARTITION_NAME &&
+          target_metadata->GetBlockDevicePartitionName(0) == LP_METADATA_DEFAULT_PARTITION_NAME);
+
+    std::map<std::string, SnapshotStatus> all_snapshot_status;
+
+    // In case of error, automatically delete devices that are created along the way.
+    // Note that "lock" is destroyed after "created_devices", so it is safe to use |lock| for
+    // these devices.
+    AutoDeviceList created_devices;
+
+    PartitionCowCreator cow_creator{
+            .target_metadata = target_metadata.get(),
+            .target_suffix = target_suffix,
+            .target_partition = nullptr,
+            .current_metadata = current_metadata.get(),
+            .current_suffix = current_suffix,
+            .operations = nullptr,
+            .extra_extents = {},
+    };
+
+    auto ret = CreateUpdateSnapshotsInternal(lock.get(), manifest, &cow_creator, &created_devices,
+                                             &all_snapshot_status);
+    if (!ret.is_ok()) return ret;
+
+    auto exported_target_metadata = target_metadata->Export();
+    if (exported_target_metadata == nullptr) {
+        LOG(ERROR) << "Cannot export target metadata";
+        return Return::Error();
+    }
+
+    ret = InitializeUpdateSnapshots(lock.get(), target_metadata.get(),
+                                    exported_target_metadata.get(), target_suffix,
+                                    all_snapshot_status);
+    if (!ret.is_ok()) return ret;
+
+    if (!UpdatePartitionTable(opener, device_->GetSuperDevice(target_slot),
+                              *exported_target_metadata, target_slot)) {
+        LOG(ERROR) << "Cannot write target metadata";
+        return Return::Error();
+    }
+
+    created_devices.Release();
+    LOG(INFO) << "Successfully created all snapshots for target slot " << target_suffix;
+
+    return Return::Ok();
+}
+
+Return SnapshotManager::CreateUpdateSnapshotsInternal(
+        LockedFile* lock, const DeltaArchiveManifest& manifest, PartitionCowCreator* cow_creator,
+        AutoDeviceList* created_devices,
+        std::map<std::string, SnapshotStatus>* all_snapshot_status) {
+    CHECK(lock);
+
+    auto* target_metadata = cow_creator->target_metadata;
+    const auto& target_suffix = cow_creator->target_suffix;
+
+    if (!target_metadata->AddGroup(kCowGroupName, 0)) {
+        LOG(ERROR) << "Cannot add group " << kCowGroupName;
+        return Return::Error();
+    }
+
+    std::map<std::string, const RepeatedPtrField<InstallOperation>*> install_operation_map;
+    std::map<std::string, std::vector<Extent>> extra_extents_map;
+    for (const auto& partition_update : manifest.partitions()) {
+        auto suffixed_name = partition_update.partition_name() + target_suffix;
+        auto&& [it, inserted] =
+                install_operation_map.emplace(suffixed_name, &partition_update.operations());
+        if (!inserted) {
+            LOG(ERROR) << "Duplicated partition " << partition_update.partition_name()
+                       << " in update manifest.";
+            return Return::Error();
+        }
+
+        auto& extra_extents = extra_extents_map[suffixed_name];
+        if (partition_update.has_hash_tree_extent()) {
+            extra_extents.push_back(partition_update.hash_tree_extent());
+        }
+        if (partition_update.has_fec_extent()) {
+            extra_extents.push_back(partition_update.fec_extent());
+        }
+    }
+
+    for (auto* target_partition : ListPartitionsWithSuffix(target_metadata, target_suffix)) {
+        cow_creator->target_partition = target_partition;
+        cow_creator->operations = nullptr;
+        auto operations_it = install_operation_map.find(target_partition->name());
+        if (operations_it != install_operation_map.end()) {
+            cow_creator->operations = operations_it->second;
+        }
+
+        cow_creator->extra_extents.clear();
+        auto extra_extents_it = extra_extents_map.find(target_partition->name());
+        if (extra_extents_it != extra_extents_map.end()) {
+            cow_creator->extra_extents = std::move(extra_extents_it->second);
+        }
+
+        // Compute the device sizes for the partition.
+        auto cow_creator_ret = cow_creator->Run();
+        if (!cow_creator_ret.has_value()) {
+            return Return::Error();
+        }
+
+        LOG(INFO) << "For partition " << target_partition->name()
+                  << ", device size = " << cow_creator_ret->snapshot_status.device_size()
+                  << ", snapshot size = " << cow_creator_ret->snapshot_status.snapshot_size()
+                  << ", cow partition size = "
+                  << cow_creator_ret->snapshot_status.cow_partition_size()
+                  << ", cow file size = " << cow_creator_ret->snapshot_status.cow_file_size();
+
+        // Delete any existing snapshot before re-creating one.
+        if (!DeleteSnapshot(lock, target_partition->name())) {
+            LOG(ERROR) << "Cannot delete existing snapshot before creating a new one for partition "
+                       << target_partition->name();
+            return Return::Error();
+        }
+
+        // It is possible that the whole partition uses free space in super, and snapshot / COW
+        // would not be needed. In this case, skip the partition.
+        bool needs_snapshot = cow_creator_ret->snapshot_status.snapshot_size() > 0;
+        bool needs_cow = (cow_creator_ret->snapshot_status.cow_partition_size() +
+                          cow_creator_ret->snapshot_status.cow_file_size()) > 0;
+        CHECK(needs_snapshot == needs_cow);
+
+        if (!needs_snapshot) {
+            LOG(INFO) << "Skip creating snapshot for partition " << target_partition->name()
+                      << "because nothing needs to be snapshotted.";
+            continue;
+        }
+
+        // Store these device sizes to snapshot status file.
+        if (!CreateSnapshot(lock, &cow_creator_ret->snapshot_status)) {
+            return Return::Error();
+        }
+        created_devices->EmplaceBack<AutoDeleteSnapshot>(this, lock, target_partition->name());
+
+        // Create the COW partition. That is, use any remaining free space in super partition before
+        // creating the COW images.
+        if (cow_creator_ret->snapshot_status.cow_partition_size() > 0) {
+            CHECK(cow_creator_ret->snapshot_status.cow_partition_size() % kSectorSize == 0)
+                    << "cow_partition_size == "
+                    << cow_creator_ret->snapshot_status.cow_partition_size()
+                    << " is not a multiple of sector size " << kSectorSize;
+            auto cow_partition = target_metadata->AddPartition(GetCowName(target_partition->name()),
+                                                               kCowGroupName, 0 /* flags */);
+            if (cow_partition == nullptr) {
+                return Return::Error();
+            }
+
+            if (!target_metadata->ResizePartition(
+                        cow_partition, cow_creator_ret->snapshot_status.cow_partition_size(),
+                        cow_creator_ret->cow_partition_usable_regions)) {
+                LOG(ERROR) << "Cannot create COW partition on metadata with size "
+                           << cow_creator_ret->snapshot_status.cow_partition_size();
+                return Return::Error();
+            }
+            // Only the in-memory target_metadata is modified; nothing to clean up if there is an
+            // error in the future.
+        }
+
+        all_snapshot_status->emplace(target_partition->name(),
+                                     std::move(cow_creator_ret->snapshot_status));
+
+        LOG(INFO) << "Successfully created snapshot partition for " << target_partition->name();
+    }
+
+    LOG(INFO) << "Allocating CoW images.";
+
+    for (auto&& [name, snapshot_status] : *all_snapshot_status) {
+        // Create the backing COW image if necessary.
+        if (snapshot_status.cow_file_size() > 0) {
+            auto ret = CreateCowImage(lock, name);
+            if (!ret.is_ok()) return AddRequiredSpace(ret, *all_snapshot_status);
+        }
+
+        LOG(INFO) << "Successfully created snapshot for " << name;
+    }
+
+    return Return::Ok();
+}
+
+Return SnapshotManager::InitializeUpdateSnapshots(
+        LockedFile* lock, MetadataBuilder* target_metadata,
+        const LpMetadata* exported_target_metadata, const std::string& target_suffix,
+        const std::map<std::string, SnapshotStatus>& all_snapshot_status) {
+    CHECK(lock);
+
+    CreateLogicalPartitionParams cow_params{
+            .block_device = LP_METADATA_DEFAULT_PARTITION_NAME,
+            .metadata = exported_target_metadata,
+            .timeout_ms = std::chrono::milliseconds::max(),
+            .partition_opener = &device_->GetPartitionOpener(),
+    };
+    for (auto* target_partition : ListPartitionsWithSuffix(target_metadata, target_suffix)) {
+        AutoDeviceList created_devices_for_cow;
+
+        if (!UnmapPartitionWithSnapshot(lock, target_partition->name())) {
+            LOG(ERROR) << "Cannot unmap existing COW devices before re-mapping them for zero-fill: "
+                       << target_partition->name();
+            return Return::Error();
+        }
+
+        auto it = all_snapshot_status.find(target_partition->name());
+        if (it == all_snapshot_status.end()) continue;
+        cow_params.partition_name = target_partition->name();
+        std::string cow_name;
+        if (!MapCowDevices(lock, cow_params, it->second, &created_devices_for_cow, &cow_name)) {
+            return Return::Error();
+        }
+
+        std::string cow_path;
+        if (!images_->GetMappedImageDevice(cow_name, &cow_path)) {
+            LOG(ERROR) << "Cannot determine path for " << cow_name;
+            return Return::Error();
+        }
+
+        auto ret = InitializeCow(cow_path);
+        if (!ret.is_ok()) {
+            LOG(ERROR) << "Can't zero-fill COW device for " << target_partition->name() << ": "
+                       << cow_path;
+            return AddRequiredSpace(ret, all_snapshot_status);
+        }
+        // Let destructor of created_devices_for_cow to unmap the COW devices.
+    };
+    return Return::Ok();
+}
+
+bool SnapshotManager::MapUpdateSnapshot(const CreateLogicalPartitionParams& params,
+                                        std::string* snapshot_path) {
+    auto lock = LockShared();
+    if (!lock) return false;
+    if (!UnmapPartitionWithSnapshot(lock.get(), params.GetPartitionName())) {
+        LOG(ERROR) << "Cannot unmap existing snapshot before re-mapping it: "
+                   << params.GetPartitionName();
+        return false;
+    }
+    return MapPartitionWithSnapshot(lock.get(), params, snapshot_path);
+}
+
+bool SnapshotManager::UnmapUpdateSnapshot(const std::string& target_partition_name) {
+    auto lock = LockShared();
+    if (!lock) return false;
+    return UnmapPartitionWithSnapshot(lock.get(), target_partition_name);
+}
+
+bool SnapshotManager::UnmapAllPartitions() {
+    auto lock = LockExclusive();
+    if (!lock) return false;
+
+    const auto& opener = device_->GetPartitionOpener();
+    uint32_t slot = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    auto super_device = device_->GetSuperDevice(slot);
+    auto metadata = android::fs_mgr::ReadMetadata(opener, super_device, slot);
+    if (!metadata) {
+        LOG(ERROR) << "Could not read dynamic partition metadata for device: " << super_device;
+        return false;
+    }
+
+    bool ok = true;
+    for (const auto& partition : metadata->partitions) {
+        auto partition_name = GetPartitionName(partition);
+        ok &= UnmapPartitionWithSnapshot(lock.get(), partition_name);
+    }
+    return ok;
+}
+
+std::ostream& operator<<(std::ostream& os, SnapshotManager::Slot slot) {
+    switch (slot) {
+        case SnapshotManager::Slot::Unknown:
+            return os << "unknown";
+        case SnapshotManager::Slot::Source:
+            return os << "source";
+        case SnapshotManager::Slot::Target:
+            return os << "target";
+    }
+}
+
+bool SnapshotManager::Dump(std::ostream& os) {
+    // Don't actually lock. Dump() is for debugging purposes only, so it is okay
+    // if it is racy.
+    auto file = OpenLock(0 /* lock flag */);
+    if (!file) return false;
+
+    std::stringstream ss;
+
+    ss << "Update state: " << ReadUpdateState(file.get()) << std::endl;
+
+    ss << "Current slot: " << device_->GetSlotSuffix() << std::endl;
+    ss << "Boot indicator: booting from " << GetCurrentSlot() << " slot" << std::endl;
+    ss << "Rollback indicator: "
+       << (access(GetRollbackIndicatorPath().c_str(), F_OK) == 0 ? "exists" : strerror(errno))
+       << std::endl;
+    ss << "Forward merge indicator: "
+       << (access(GetForwardMergeIndicatorPath().c_str(), F_OK) == 0 ? "exists" : strerror(errno))
+       << std::endl;
+
+    bool ok = true;
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(file.get(), &snapshots)) {
+        LOG(ERROR) << "Could not list snapshots";
+        snapshots.clear();
+        ok = false;
+    }
+    for (const auto& name : snapshots) {
+        ss << "Snapshot: " << name << std::endl;
+        SnapshotStatus status;
+        if (!ReadSnapshotStatus(file.get(), name, &status)) {
+            ok = false;
+            continue;
+        }
+        ss << "    state: " << SnapshotState_Name(status.state()) << std::endl;
+        ss << "    device size (bytes): " << status.device_size() << std::endl;
+        ss << "    snapshot size (bytes): " << status.snapshot_size() << std::endl;
+        ss << "    cow partition size (bytes): " << status.cow_partition_size() << std::endl;
+        ss << "    cow file size (bytes): " << status.cow_file_size() << std::endl;
+        ss << "    allocated sectors: " << status.sectors_allocated() << std::endl;
+        ss << "    metadata sectors: " << status.metadata_sectors() << std::endl;
+    }
+    os << ss.rdbuf();
+    return ok;
+}
+
+std::unique_ptr<AutoDevice> SnapshotManager::EnsureMetadataMounted() {
+    if (!device_->IsRecovery()) {
+        // No need to mount anything in recovery.
+        LOG(INFO) << "EnsureMetadataMounted does nothing in Android mode.";
+        return std::unique_ptr<AutoUnmountDevice>(new AutoUnmountDevice());
+    }
+    auto ret = AutoUnmountDevice::New(device_->GetMetadataDir());
+    if (ret == nullptr) return nullptr;
+
+    // In rescue mode, it is possible to erase and format metadata, but /metadata/ota is not
+    // created to execute snapshot updates. Hence, subsequent calls is likely to fail because
+    // Lock*() fails. By failing early and returning nullptr here, update_engine_sideload can
+    // treat this case as if /metadata is not mounted.
+    if (!LockShared()) {
+        LOG(WARNING) << "/metadata is mounted, but errors occur when acquiring a shared lock. "
+                        "Subsequent calls to SnapshotManager will fail. Unmounting /metadata now.";
+        return nullptr;
+    }
+    return ret;
+}
+
+bool SnapshotManager::HandleImminentDataWipe(const std::function<void()>& callback) {
+    if (!device_->IsRecovery()) {
+        LOG(ERROR) << "Data wipes are only allowed in recovery.";
+        return false;
+    }
+
+    auto mount = EnsureMetadataMounted();
+    if (!mount || !mount->HasDevice()) {
+        // We allow the wipe to continue, because if we can't mount /metadata,
+        // it is unlikely the device would have booted anyway. If there is no
+        // metadata partition, then the device predates Virtual A/B.
+        return true;
+    }
+
+    // Check this early, so we don't accidentally start trying to populate
+    // the state file in recovery. Note we don't call GetUpdateState since
+    // we want errors in acquiring the lock to be propagated, instead of
+    // returning UpdateState::None.
+    auto state_file = GetStateFilePath();
+    if (access(state_file.c_str(), F_OK) != 0 && errno == ENOENT) {
+        return true;
+    }
+
+    auto slot_number = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    auto super_path = device_->GetSuperDevice(slot_number);
+    if (!CreateLogicalAndSnapshotPartitions(super_path)) {
+        LOG(ERROR) << "Unable to map partitions to complete merge.";
+        return false;
+    }
+
+    auto process_callback = [&]() -> bool {
+        if (callback) {
+            callback();
+        }
+        return true;
+    };
+
+    in_factory_data_reset_ = true;
+    bool ok = ProcessUpdateStateOnDataWipe(true /* allow_forward_merge */, process_callback);
+    in_factory_data_reset_ = false;
+
+    if (!ok) {
+        return false;
+    }
+
+    // Nothing should be depending on partitions now, so unmap them all.
+    if (!UnmapAllPartitions()) {
+        LOG(ERROR) << "Unable to unmap all partitions; fastboot may fail to flash.";
+    }
+    return true;
+}
+
+bool SnapshotManager::FinishMergeInRecovery() {
+    if (!device_->IsRecovery()) {
+        LOG(ERROR) << "Data wipes are only allowed in recovery.";
+        return false;
+    }
+
+    auto mount = EnsureMetadataMounted();
+    if (!mount || !mount->HasDevice()) {
+        return false;
+    }
+
+    auto slot_number = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    auto super_path = device_->GetSuperDevice(slot_number);
+    if (!CreateLogicalAndSnapshotPartitions(super_path)) {
+        LOG(ERROR) << "Unable to map partitions to complete merge.";
+        return false;
+    }
+
+    UpdateState state = ProcessUpdateState();
+    if (state != UpdateState::MergeCompleted) {
+        LOG(ERROR) << "Merge returned unexpected status: " << state;
+        return false;
+    }
+
+    // Nothing should be depending on partitions now, so unmap them all.
+    if (!UnmapAllPartitions()) {
+        LOG(ERROR) << "Unable to unmap all partitions; fastboot may fail to flash.";
+    }
+    return true;
+}
+
+bool SnapshotManager::ProcessUpdateStateOnDataWipe(bool allow_forward_merge,
+                                                   const std::function<bool()>& callback) {
+    auto slot_number = SlotNumberForSlotSuffix(device_->GetSlotSuffix());
+    UpdateState state = ProcessUpdateState(callback);
+    LOG(INFO) << "Update state in recovery: " << state;
+    switch (state) {
+        case UpdateState::MergeFailed:
+            LOG(ERROR) << "Unrecoverable merge failure detected.";
+            return false;
+        case UpdateState::Unverified: {
+            // If an OTA was just applied but has not yet started merging:
+            //
+            // - if forward merge is allowed, initiate merge and call
+            // ProcessUpdateState again.
+            //
+            // - if forward merge is not allowed, we
+            // have no choice but to revert slots, because the current slot will
+            // immediately become unbootable. Rather than wait for the device
+            // to reboot N times until a rollback, we proactively disable the
+            // new slot instead.
+            //
+            // Since the rollback is inevitable, we don't treat a HAL failure
+            // as an error here.
+            auto slot = GetCurrentSlot();
+            if (slot == Slot::Target) {
+                if (allow_forward_merge &&
+                    access(GetForwardMergeIndicatorPath().c_str(), F_OK) == 0) {
+                    LOG(INFO) << "Forward merge allowed, initiating merge now.";
+                    return InitiateMerge() &&
+                           ProcessUpdateStateOnDataWipe(false /* allow_forward_merge */, callback);
+                }
+
+                LOG(ERROR) << "Reverting to old slot since update will be deleted.";
+                device_->SetSlotAsUnbootable(slot_number);
+            } else {
+                LOG(INFO) << "Booting from " << slot << " slot, no action is taken.";
+            }
+            break;
+        }
+        case UpdateState::MergeNeedsReboot:
+            // We shouldn't get here, because nothing is depending on
+            // logical partitions.
+            LOG(ERROR) << "Unexpected merge-needs-reboot state in recovery.";
+            break;
+        default:
+            break;
+    }
+    return true;
+}
+
+bool SnapshotManager::EnsureNoOverflowSnapshot(LockedFile* lock) {
+    CHECK(lock);
+
+    std::vector<std::string> snapshots;
+    if (!ListSnapshots(lock, &snapshots)) {
+        LOG(ERROR) << "Could not list snapshots.";
+        return false;
+    }
+
+    auto& dm = DeviceMapper::Instance();
+    for (const auto& snapshot : snapshots) {
+        std::vector<DeviceMapper::TargetInfo> targets;
+        if (!dm.GetTableStatus(snapshot, &targets)) {
+            LOG(ERROR) << "Could not read snapshot device table: " << snapshot;
+            return false;
+        }
+        if (targets.size() != 1) {
+            LOG(ERROR) << "Unexpected device-mapper table for snapshot: " << snapshot
+                       << ", size = " << targets.size();
+            return false;
+        }
+        if (targets[0].IsOverflowSnapshot()) {
+            LOG(ERROR) << "Detected overflow in snapshot " << snapshot
+                       << ", CoW device size computation is wrong!";
+            return false;
+        }
+    }
+
+    return true;
+}
+
+CreateResult SnapshotManager::RecoveryCreateSnapshotDevices() {
+    if (!device_->IsRecovery()) {
+        LOG(ERROR) << __func__ << " is only allowed in recovery.";
+        return CreateResult::NOT_CREATED;
+    }
+
+    auto mount = EnsureMetadataMounted();
+    if (!mount || !mount->HasDevice()) {
+        LOG(ERROR) << "Couldn't mount Metadata.";
+        return CreateResult::NOT_CREATED;
+    }
+    return RecoveryCreateSnapshotDevices(mount);
+}
+
+CreateResult SnapshotManager::RecoveryCreateSnapshotDevices(
+        const std::unique_ptr<AutoDevice>& metadata_device) {
+    if (!device_->IsRecovery()) {
+        LOG(ERROR) << __func__ << " is only allowed in recovery.";
+        return CreateResult::NOT_CREATED;
+    }
+
+    if (metadata_device == nullptr || !metadata_device->HasDevice()) {
+        LOG(ERROR) << "Metadata not mounted.";
+        return CreateResult::NOT_CREATED;
+    }
+
+    auto state_file = GetStateFilePath();
+    if (access(state_file.c_str(), F_OK) != 0 && errno == ENOENT) {
+        LOG(ERROR) << "Couldn't access state file.";
+        return CreateResult::NOT_CREATED;
+    }
+
+    if (!NeedSnapshotsInFirstStageMount()) {
+        return CreateResult::NOT_CREATED;
+    }
+
+    auto slot_suffix = device_->GetOtherSlotSuffix();
+    auto slot_number = SlotNumberForSlotSuffix(slot_suffix);
+    auto super_path = device_->GetSuperDevice(slot_number);
+    if (!CreateLogicalAndSnapshotPartitions(super_path)) {
+        LOG(ERROR) << "Unable to map partitions.";
+        return CreateResult::ERROR;
+    }
+    return CreateResult::CREATED;
+}
+
+bool SnapshotManager::UpdateForwardMergeIndicator(bool wipe) {
+    auto path = GetForwardMergeIndicatorPath();
+
+    if (!wipe) {
+        LOG(INFO) << "Wipe is not scheduled. Deleting forward merge indicator.";
+        return RemoveFileIfExists(path);
+    }
+
+    // TODO(b/152094219): Don't forward merge if no CoW file is allocated.
+
+    LOG(INFO) << "Wipe will be scheduled. Allowing forward merge of snapshots.";
+    if (!android::base::WriteStringToFile("1", path)) {
+        PLOG(ERROR) << "Unable to write forward merge indicator: " << path;
+        return false;
+    }
+
+    return true;
+}
+
+bool SnapshotManager::GetMappedImageDeviceStringOrPath(const std::string& device_name,
+                                                       std::string* device_string_or_mapped_path) {
+    auto& dm = DeviceMapper::Instance();
+    // Try getting the device string if it is a device mapper device.
+    if (dm.GetState(device_name) != DmDeviceState::INVALID) {
+        return dm.GetDeviceString(device_name, device_string_or_mapped_path);
+    }
+
+    // Otherwise, get path from IImageManager.
+    if (!images_->GetMappedImageDevice(device_name, device_string_or_mapped_path)) {
+        return false;
+    }
+
+    LOG(WARNING) << "Calling GetMappedImageDevice with local image manager; device "
+                 << (device_string_or_mapped_path ? *device_string_or_mapped_path : "(nullptr)")
+                 << "may not be available in first stage init! ";
+    return true;
+}
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/snapshot_metadata_updater.cpp b/fs_mgr/libsnapshot/snapshot_metadata_updater.cpp
new file mode 100644
index 0000000..60bf796
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshot_metadata_updater.cpp
@@ -0,0 +1,273 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "snapshot_metadata_updater.h"
+
+#include <algorithm>
+#include <map>
+#include <optional>
+#include <set>
+#include <string>
+#include <string_view>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <fs_mgr.h>
+#include <libsnapshot/snapshot.h>
+
+using android::fs_mgr::MetadataBuilder;
+using android::fs_mgr::Partition;
+using android::fs_mgr::SlotSuffixForSlotNumber;
+using chromeos_update_engine::DeltaArchiveManifest;
+
+namespace android {
+namespace snapshot {
+SnapshotMetadataUpdater::SnapshotMetadataUpdater(MetadataBuilder* builder, uint32_t target_slot,
+                                                 const DeltaArchiveManifest& manifest)
+    : builder_(builder), target_suffix_(SlotSuffixForSlotNumber(target_slot)) {
+    if (!manifest.has_dynamic_partition_metadata()) {
+        return;
+    }
+
+    // Key: partition name ("system"). Value: group name ("group").
+    // No suffix.
+    std::map<std::string_view, std::string_view> partition_group_map;
+    const auto& metadata_groups = manifest.dynamic_partition_metadata().groups();
+    groups_.reserve(metadata_groups.size());
+    for (const auto& group : metadata_groups) {
+        groups_.emplace_back(Group{group.name() + target_suffix_, &group});
+        for (const auto& partition_name : group.partition_names()) {
+            partition_group_map[partition_name] = group.name();
+        }
+    }
+
+    for (const auto& p : manifest.partitions()) {
+        auto it = partition_group_map.find(p.partition_name());
+        if (it != partition_group_map.end()) {
+            partitions_.emplace_back(Partition{p.partition_name() + target_suffix_,
+                                               std::string(it->second) + target_suffix_, &p});
+        }
+    }
+}
+
+bool SnapshotMetadataUpdater::ShrinkPartitions() const {
+    for (const auto& partition_update : partitions_) {
+        auto* existing_partition = builder_->FindPartition(partition_update.name);
+        if (existing_partition == nullptr) {
+            continue;
+        }
+        auto new_size = partition_update->new_partition_info().size();
+        if (existing_partition->size() <= new_size) {
+            continue;
+        }
+        if (!builder_->ResizePartition(existing_partition, new_size)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::DeletePartitions() const {
+    std::vector<std::string> partitions_to_delete;
+    // Don't delete partitions in groups where the group name doesn't have target_suffix,
+    // e.g. default.
+    for (auto* existing_partition : ListPartitionsWithSuffix(builder_, target_suffix_)) {
+        auto iter = std::find_if(partitions_.begin(), partitions_.end(),
+                                 [existing_partition](auto&& partition_update) {
+                                     return partition_update.name == existing_partition->name();
+                                 });
+        // Update package metadata doesn't have this partition. Prepare to delete it.
+        // Not deleting from builder_ yet because it may break ListPartitionsWithSuffix if it were
+        // to return an iterable view of builder_.
+        if (iter == partitions_.end()) {
+            partitions_to_delete.push_back(existing_partition->name());
+        }
+    }
+
+    for (const auto& partition_name : partitions_to_delete) {
+        builder_->RemovePartition(partition_name);
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::MovePartitionsToDefault() const {
+    for (const auto& partition_update : partitions_) {
+        auto* existing_partition = builder_->FindPartition(partition_update.name);
+        if (existing_partition == nullptr) {
+            continue;
+        }
+        if (existing_partition->group_name() == partition_update.group_name) {
+            continue;
+        }
+        // Move to "default" group (which doesn't have maximum size constraint)
+        // temporarily.
+        if (!builder_->ChangePartitionGroup(existing_partition, android::fs_mgr::kDefaultGroup)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::ShrinkGroups() const {
+    for (const auto& group_update : groups_) {
+        auto* existing_group = builder_->FindGroup(group_update.name);
+        if (existing_group == nullptr) {
+            continue;
+        }
+        if (existing_group->maximum_size() <= group_update->size()) {
+            continue;
+        }
+        if (!builder_->ChangeGroupSize(existing_group->name(), group_update->size())) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::DeleteGroups() const {
+    std::vector<std::string> existing_groups = builder_->ListGroups();
+    for (const auto& existing_group_name : existing_groups) {
+        // Don't delete groups without target suffix, e.g. default.
+        if (!android::base::EndsWith(existing_group_name, target_suffix_)) {
+            continue;
+        }
+
+        auto iter = std::find_if(groups_.begin(), groups_.end(),
+                                 [&existing_group_name](auto&& group_update) {
+                                     return group_update.name == existing_group_name;
+                                 });
+        // Update package metadata has this group as well, so not deleting it.
+        if (iter != groups_.end()) {
+            continue;
+        }
+        // Update package metadata doesn't have this group. Before deleting it, sanity check that it
+        // doesn't have any partitions left. Update metadata shouldn't assign any partitions to this
+        // group, so all partitions that originally belong to this group should be moved by
+        // MovePartitionsToDefault at this point.
+        auto existing_partitions_in_group = builder_->ListPartitionsInGroup(existing_group_name);
+        if (!existing_partitions_in_group.empty()) {
+            std::vector<std::string> partition_names_in_group;
+            std::transform(existing_partitions_in_group.begin(), existing_partitions_in_group.end(),
+                           std::back_inserter(partition_names_in_group),
+                           [](auto* p) { return p->name(); });
+            LOG(ERROR)
+                    << "Group " << existing_group_name
+                    << " cannot be deleted because the following partitions are left unassigned: ["
+                    << android::base::Join(partition_names_in_group, ",") << "]";
+            return false;
+        }
+        builder_->RemoveGroupAndPartitions(existing_group_name);
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::AddGroups() const {
+    for (const auto& group_update : groups_) {
+        if (builder_->FindGroup(group_update.name) == nullptr) {
+            if (!builder_->AddGroup(group_update.name, group_update->size())) {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::GrowGroups() const {
+    for (const auto& group_update : groups_) {
+        auto* existing_group = builder_->FindGroup(group_update.name);
+        if (existing_group == nullptr) {
+            continue;
+        }
+        if (existing_group->maximum_size() >= group_update->size()) {
+            continue;
+        }
+        if (!builder_->ChangeGroupSize(existing_group->name(), group_update->size())) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::AddPartitions() const {
+    for (const auto& partition_update : partitions_) {
+        if (builder_->FindPartition(partition_update.name) == nullptr) {
+            auto* p =
+                    builder_->AddPartition(partition_update.name, partition_update.group_name,
+                                           LP_PARTITION_ATTR_READONLY | LP_PARTITION_ATTR_UPDATED);
+            if (p == nullptr) {
+                return false;
+            }
+        }
+    }
+    // Will be resized in GrowPartitions.
+    return true;
+}
+
+bool SnapshotMetadataUpdater::GrowPartitions() const {
+    for (const auto& partition_update : partitions_) {
+        auto* existing_partition = builder_->FindPartition(partition_update.name);
+        if (existing_partition == nullptr) {
+            continue;
+        }
+        auto new_size = partition_update->new_partition_info().size();
+        if (existing_partition->size() >= new_size) {
+            continue;
+        }
+        if (!builder_->ResizePartition(existing_partition, new_size)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::MovePartitionsToCorrectGroup() const {
+    for (const auto& partition_update : partitions_) {
+        auto* existing_partition = builder_->FindPartition(partition_update.name);
+        if (existing_partition == nullptr) {
+            continue;
+        }
+        if (existing_partition->group_name() == partition_update.group_name) {
+            continue;
+        }
+        if (!builder_->ChangePartitionGroup(existing_partition, partition_update.group_name)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool SnapshotMetadataUpdater::Update() const {
+    // Remove extents used by COW devices by removing the COW group completely.
+    builder_->RemoveGroupAndPartitions(android::snapshot::kCowGroupName);
+
+    // The order of these operations are important so that we
+    // always have enough space to grow or add new partitions / groups.
+    // clang-format off
+    return ShrinkPartitions() &&
+           DeletePartitions() &&
+           MovePartitionsToDefault() &&
+           ShrinkGroups() &&
+           DeleteGroups() &&
+           AddGroups() &&
+           GrowGroups() &&
+           AddPartitions() &&
+           GrowPartitions() &&
+           MovePartitionsToCorrectGroup();
+    // clang-format on
+}
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/snapshot_metadata_updater.h b/fs_mgr/libsnapshot/snapshot_metadata_updater.h
new file mode 100644
index 0000000..83c9460
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshot_metadata_updater.h
@@ -0,0 +1,85 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include <liblp/builder.h>
+#include <update_engine/update_metadata.pb.h>
+
+#include "utility.h"
+
+namespace android {
+namespace snapshot {
+
+// Helper class that modifies a super partition metadata for an update for
+// Virtual A/B devices.
+class SnapshotMetadataUpdater {
+    using DeltaArchiveManifest = chromeos_update_engine::DeltaArchiveManifest;
+    using DynamicPartitionMetadata = chromeos_update_engine::DynamicPartitionMetadata;
+    using DynamicPartitionGroup = chromeos_update_engine::DynamicPartitionGroup;
+    using PartitionUpdate = chromeos_update_engine::PartitionUpdate;
+
+  public:
+    // Caller is responsible for ensuring the lifetime of manifest to be longer
+    // than SnapshotMetadataUpdater.
+    SnapshotMetadataUpdater(android::fs_mgr::MetadataBuilder* builder, uint32_t target_slot,
+                            const DeltaArchiveManifest& manifest);
+    bool Update() const;
+
+  private:
+    bool RenameGroupSuffix() const;
+    bool ShrinkPartitions() const;
+    bool DeletePartitions() const;
+    bool MovePartitionsToDefault() const;
+    bool ShrinkGroups() const;
+    bool DeleteGroups() const;
+    bool AddGroups() const;
+    bool GrowGroups() const;
+    bool AddPartitions() const;
+    bool GrowPartitions() const;
+    bool MovePartitionsToCorrectGroup() const;
+
+    // Wraps a DynamicPartitionGroup with a slot-suffixed name. Always use
+    // .name instead of ->name() because .name has the slot suffix (e.g.
+    // .name is "group_b" and ->name() is "group".)
+    struct Group {
+        std::string name;
+        const DynamicPartitionGroup* group;
+        const DynamicPartitionGroup* operator->() const { return group; }
+    };
+    // Wraps a PartitionUpdate with a slot-suffixed name / group name. Always use
+    // .name instead of ->partition_name() because .name has the slot suffix (e.g.
+    // .name is "system_b" and ->partition_name() is "system".)
+    struct Partition {
+        std::string name;
+        std::string group_name;
+        const PartitionUpdate* partition;
+        const PartitionUpdate* operator->() const { return partition; }
+    };
+
+    android::fs_mgr::MetadataBuilder* const builder_;
+    const std::string target_suffix_;
+    std::vector<Group> groups_;
+    std::vector<Partition> partitions_;
+};
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/snapshot_metadata_updater_test.cpp b/fs_mgr/libsnapshot/snapshot_metadata_updater_test.cpp
new file mode 100644
index 0000000..0a16c03
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshot_metadata_updater_test.cpp
@@ -0,0 +1,340 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "snapshot_metadata_updater.h"
+
+#include <memory>
+#include <string>
+
+#include <android-base/properties.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <liblp/builder.h>
+#include <storage_literals/storage_literals.h>
+
+#include <libsnapshot/test_helpers.h>
+
+using namespace android::storage_literals;
+using android::fs_mgr::LpMetadata;
+using android::fs_mgr::MetadataBuilder;
+using android::fs_mgr::SlotSuffixForSlotNumber;
+using chromeos_update_engine::DeltaArchiveManifest;
+using chromeos_update_engine::DynamicPartitionGroup;
+using chromeos_update_engine::PartitionUpdate;
+using testing::AssertionFailure;
+using testing::AssertionResult;
+using testing::AssertionSuccess;
+
+namespace android {
+namespace snapshot {
+
+class SnapshotMetadataUpdaterTest : public ::testing::TestWithParam<uint32_t> {
+  public:
+    SnapshotMetadataUpdaterTest() = default;
+
+    void SetUp() override {
+        SKIP_IF_NON_VIRTUAL_AB();
+
+        target_slot_ = GetParam();
+        target_suffix_ = SlotSuffixForSlotNumber(target_slot_);
+        SnapshotTestPropertyFetcher::SetUp(SlotSuffixForSlotNumber(1 - target_slot_));
+        builder_ = MetadataBuilder::New(4_GiB + 1_MiB, 4_KiB, 2);
+
+        group_ = manifest_.mutable_dynamic_partition_metadata()->add_groups();
+        group_->set_name("group");
+        group_->set_size(4_GiB);
+        group_->add_partition_names("system");
+        group_->add_partition_names("vendor");
+        system_ = manifest_.add_partitions();
+        system_->set_partition_name("system");
+        SetSize(system_, 2_GiB);
+        vendor_ = manifest_.add_partitions();
+        vendor_->set_partition_name("vendor");
+        SetSize(vendor_, 1_GiB);
+
+        ASSERT_TRUE(FillFakeMetadata(builder_.get(), manifest_, target_suffix_));
+    }
+
+    void TearDown() override {
+        RETURN_IF_NON_VIRTUAL_AB();
+
+        SnapshotTestPropertyFetcher::TearDown();
+    }
+
+    // Append suffix to name.
+    std::string T(std::string_view name) { return std::string(name) + target_suffix_; }
+
+    AssertionResult UpdateAndExport() {
+        SnapshotMetadataUpdater updater(builder_.get(), target_slot_, manifest_);
+        if (!updater.Update()) {
+            return AssertionFailure() << "Update failed.";
+        }
+
+        exported_ = builder_->Export();
+        if (exported_ == nullptr) {
+            return AssertionFailure() << "Export failed.";
+        }
+        return AssertionSuccess();
+    }
+
+    // Check that in |builder_|, partition |name| + |target_suffix_| has the given |size|.
+    AssertionResult CheckSize(std::string_view name, uint64_t size) {
+        auto p = builder_->FindPartition(T(name));
+        if (p == nullptr) {
+            return AssertionFailure() << "Cannot find partition " << T(name);
+        }
+        if (p->size() != size) {
+            return AssertionFailure() << "Partition " << T(name) << " should be " << size
+                                      << " bytes, but is " << p->size() << " bytes.";
+        }
+        return AssertionSuccess() << "Partition" << T(name) << " is " << size << " bytes.";
+    }
+
+    // Check that in |builder_|, group |name| + |target_suffix_| has the given |size|.
+    AssertionResult CheckGroupSize(std::string_view name, uint64_t size) {
+        auto g = builder_->FindGroup(T(name));
+        if (g == nullptr) {
+            return AssertionFailure() << "Cannot find group " << T(name);
+        }
+        if (g->maximum_size() != size) {
+            return AssertionFailure() << "Group " << T(name) << " should be " << size
+                                      << " bytes, but is " << g->maximum_size() << " bytes.";
+        }
+        return AssertionSuccess() << "Group" << T(name) << " is " << size << " bytes.";
+    }
+
+    // Check that in |builder_|, partition |partition_name| + |target_suffix_| is in group
+    // |group_name| + |target_suffix_|;
+    AssertionResult CheckGroupName(std::string_view partition_name, std::string_view group_name) {
+        auto p = builder_->FindPartition(T(partition_name));
+        if (p == nullptr) {
+            return AssertionFailure() << "Cannot find partition " << T(partition_name);
+        }
+        if (p->group_name() != T(group_name)) {
+            return AssertionFailure() << "Partition " << T(partition_name) << " should be in "
+                                      << T(group_name) << ", but is in " << p->group_name() << ".";
+        }
+        return AssertionSuccess() << "Partition" << T(partition_name) << " is in " << T(group_name)
+                                  << ".";
+    }
+
+    std::unique_ptr<MetadataBuilder> builder_;
+    uint32_t target_slot_;
+    std::string target_suffix_;
+    DeltaArchiveManifest manifest_;
+    std::unique_ptr<LpMetadata> exported_;
+    DynamicPartitionGroup* group_ = nullptr;
+    PartitionUpdate* system_ = nullptr;
+    PartitionUpdate* vendor_ = nullptr;
+};
+
+TEST_P(SnapshotMetadataUpdaterTest, NoChange) {
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckGroupSize("group", 4_GiB));
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_TRUE(CheckGroupName("system", "group"));
+    EXPECT_TRUE(CheckSize("vendor", 1_GiB));
+    EXPECT_TRUE(CheckGroupName("vendor", "group"));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, GrowWithinBounds) {
+    SetSize(system_, 2_GiB + 512_MiB);
+    SetSize(vendor_, 1_GiB + 512_MiB);
+
+    ASSERT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 2_GiB + 512_MiB));
+    EXPECT_TRUE(CheckSize("vendor", 1_GiB + 512_MiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, GrowOverSuper) {
+    SetSize(system_, 3_GiB);
+    SetSize(vendor_, 1_GiB + 512_MiB);
+
+    EXPECT_FALSE(UpdateAndExport());
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, GrowOverGroup) {
+    SetSize(system_, 3_GiB);
+    SetSize(vendor_, 1_GiB + 4_KiB);
+
+    EXPECT_FALSE(UpdateAndExport());
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, Add) {
+    group_->add_partition_names("product");
+    auto product = manifest_.add_partitions();
+    product->set_partition_name("product");
+    SetSize(product, 1_GiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_TRUE(CheckSize("vendor", 1_GiB));
+    EXPECT_TRUE(CheckSize("product", 1_GiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, AddTooBig) {
+    group_->add_partition_names("product");
+    auto product = manifest_.add_partitions();
+    product->set_partition_name("product");
+    SetSize(product, 1_GiB + 4_KiB);
+
+    EXPECT_FALSE(UpdateAndExport());
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, ShrinkAll) {
+    SetSize(system_, 1_GiB);
+    SetSize(vendor_, 512_MiB);
+
+    ASSERT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 1_GiB));
+    EXPECT_TRUE(CheckSize("vendor", 512_MiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, ShrinkAndGrow) {
+    SetSize(system_, 3_GiB + 512_MiB);
+    SetSize(vendor_, 512_MiB);
+
+    ASSERT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 3_GiB + 512_MiB));
+    EXPECT_TRUE(CheckSize("vendor", 512_MiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, ShrinkAndAdd) {
+    SetSize(system_, 2_GiB);
+    SetSize(vendor_, 512_MiB);
+    group_->add_partition_names("product");
+    auto product = manifest_.add_partitions();
+    product->set_partition_name("product");
+    SetSize(product, 1_GiB + 512_MiB);
+
+    ASSERT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_TRUE(CheckSize("vendor", 512_MiB));
+    EXPECT_TRUE(CheckSize("product", 1_GiB + 512_MiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, Delete) {
+    group_->mutable_partition_names()->RemoveLast();
+    // No need to delete it from manifest.partitions as SnapshotMetadataUpdater
+    // should ignore them (treat them as static partitions).
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_EQ(nullptr, builder_->FindPartition(T("vendor")));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, DeleteAndGrow) {
+    group_->mutable_partition_names()->RemoveLast();
+    SetSize(system_, 4_GiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 4_GiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, DeleteAndAdd) {
+    group_->mutable_partition_names()->RemoveLast();
+    group_->add_partition_names("product");
+    auto product = manifest_.add_partitions();
+    product->set_partition_name("product");
+    SetSize(product, 2_GiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_EQ(nullptr, builder_->FindPartition(T("vendor")));
+    EXPECT_TRUE(CheckSize("product", 2_GiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, GrowGroup) {
+    group_->set_size(4_GiB + 512_KiB);
+    SetSize(system_, 2_GiB + 256_KiB);
+    SetSize(vendor_, 2_GiB + 256_KiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 2_GiB + 256_KiB));
+    EXPECT_TRUE(CheckSize("vendor", 2_GiB + 256_KiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, ShrinkGroup) {
+    group_->set_size(1_GiB);
+    SetSize(system_, 512_MiB);
+    SetSize(vendor_, 512_MiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckSize("system", 512_MiB));
+    EXPECT_TRUE(CheckSize("vendor", 512_MiB));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, MoveToNewGroup) {
+    group_->mutable_partition_names()->RemoveLast();
+    group_->set_size(2_GiB);
+
+    auto another_group = manifest_.mutable_dynamic_partition_metadata()->add_groups();
+    another_group->set_name("another_group");
+    another_group->set_size(2_GiB);
+    another_group->add_partition_names("vendor");
+    SetSize(vendor_, 2_GiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_TRUE(CheckGroupSize("group", 2_GiB));
+    EXPECT_TRUE(CheckGroupSize("another_group", 2_GiB));
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_TRUE(CheckGroupName("system", "group"));
+    EXPECT_TRUE(CheckSize("vendor", 2_GiB));
+    EXPECT_TRUE(CheckGroupName("vendor", "another_group"));
+}
+
+TEST_P(SnapshotMetadataUpdaterTest, DeleteAndAddGroup) {
+    manifest_.mutable_dynamic_partition_metadata()->mutable_groups()->RemoveLast();
+    group_ = nullptr;
+
+    auto another_group = manifest_.mutable_dynamic_partition_metadata()->add_groups();
+    another_group->set_name("another_group");
+    another_group->set_size(4_GiB);
+    another_group->add_partition_names("system");
+    another_group->add_partition_names("vendor");
+    another_group->add_partition_names("product");
+    auto product = manifest_.add_partitions();
+    product->set_partition_name("product");
+    SetSize(product, 1_GiB);
+
+    EXPECT_TRUE(UpdateAndExport());
+
+    EXPECT_EQ(nullptr, builder_->FindGroup(T("group")));
+    EXPECT_TRUE(CheckGroupSize("another_group", 4_GiB));
+    EXPECT_TRUE(CheckSize("system", 2_GiB));
+    EXPECT_TRUE(CheckGroupName("system", "another_group"));
+    EXPECT_TRUE(CheckSize("vendor", 1_GiB));
+    EXPECT_TRUE(CheckGroupName("vendor", "another_group"));
+    EXPECT_TRUE(CheckSize("product", 1_GiB));
+    EXPECT_TRUE(CheckGroupName("product", "another_group"));
+}
+
+INSTANTIATE_TEST_SUITE_P(Snapshot, SnapshotMetadataUpdaterTest, testing::Values(0, 1));
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/snapshot_stats.cpp b/fs_mgr/libsnapshot/snapshot_stats.cpp
new file mode 100644
index 0000000..3723730
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshot_stats.cpp
@@ -0,0 +1,132 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <libsnapshot/snapshot_stats.h>
+
+#include <sstream>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include "utility.h"
+
+namespace android {
+namespace snapshot {
+
+SnapshotMergeStats* SnapshotMergeStats::GetInstance(SnapshotManager& parent) {
+    static SnapshotMergeStats g_instance(parent.GetMergeStateFilePath());
+    CHECK(g_instance.path_ == parent.GetMergeStateFilePath());
+    return &g_instance;
+}
+
+SnapshotMergeStats::SnapshotMergeStats(const std::string& path) : path_(path), running_(false) {}
+
+bool SnapshotMergeStats::ReadState() {
+    std::string contents;
+    if (!android::base::ReadFileToString(path_, &contents)) {
+        PLOG(INFO) << "Read merge statistics file failed";
+        return false;
+    }
+    if (!report_.ParseFromString(contents)) {
+        LOG(ERROR) << "Unable to parse merge statistics file as SnapshotMergeReport";
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotMergeStats::WriteState() {
+    std::string contents;
+    if (!report_.SerializeToString(&contents)) {
+        LOG(ERROR) << "Unable to serialize SnapshotMergeStats.";
+        return false;
+    }
+    if (!WriteStringToFileAtomic(contents, path_)) {
+        PLOG(ERROR) << "Could not write to merge statistics file";
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotMergeStats::DeleteState() {
+    std::string error;
+    if (!android::base::RemoveFileIfExists(path_, &error)) {
+        LOG(ERROR) << "Failed to remove merge statistics file " << path_ << ": " << error;
+        return false;
+    }
+    return true;
+}
+
+bool SnapshotMergeStats::Start() {
+    if (running_) {
+        LOG(ERROR) << "SnapshotMergeStats running_ == " << running_;
+        return false;
+    }
+    running_ = true;
+
+    start_time_ = std::chrono::steady_clock::now();
+    if (ReadState()) {
+        report_.set_resume_count(report_.resume_count() + 1);
+    } else {
+        report_.set_resume_count(0);
+        report_.set_state(UpdateState::None);
+    }
+
+    return WriteState();
+}
+
+void SnapshotMergeStats::set_state(android::snapshot::UpdateState state) {
+    report_.set_state(state);
+}
+
+void SnapshotMergeStats::set_cow_file_size(uint64_t cow_file_size) {
+    report_.set_cow_file_size(cow_file_size);
+    WriteState();
+}
+
+uint64_t SnapshotMergeStats::cow_file_size() {
+    return report_.cow_file_size();
+}
+
+class SnapshotMergeStatsResultImpl : public SnapshotMergeStats::Result {
+  public:
+    SnapshotMergeStatsResultImpl(const SnapshotMergeReport& report,
+                                 std::chrono::steady_clock::duration merge_time)
+        : report_(report), merge_time_(merge_time) {}
+    const SnapshotMergeReport& report() const override { return report_; }
+    std::chrono::steady_clock::duration merge_time() const override { return merge_time_; }
+
+  private:
+    SnapshotMergeReport report_;
+    std::chrono::steady_clock::duration merge_time_;
+};
+
+std::unique_ptr<SnapshotMergeStats::Result> SnapshotMergeStats::Finish() {
+    if (!running_) {
+        LOG(ERROR) << "SnapshotMergeStats running_ == " << running_;
+        return nullptr;
+    }
+    running_ = false;
+
+    auto result = std::make_unique<SnapshotMergeStatsResultImpl>(
+            report_, std::chrono::steady_clock::now() - start_time_);
+
+    // We still want to report result if state is not deleted. Just leave
+    // it there and move on. A side effect is that it may be reported over and
+    // over again in the future, but there is nothing we can do.
+    (void)DeleteState();
+
+    return result;
+}
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/snapshot_test.cpp b/fs_mgr/libsnapshot/snapshot_test.cpp
new file mode 100644
index 0000000..dce2c41
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshot_test.cpp
@@ -0,0 +1,1930 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <libsnapshot/snapshot.h>
+
+#include <fcntl.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <chrono>
+#include <deque>
+#include <future>
+#include <iostream>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <fs_mgr/roots.h>
+#include <fs_mgr_dm_linear.h>
+#include <gtest/gtest.h>
+#include <libdm/dm.h>
+#include <libfiemap/image_manager.h>
+#include <liblp/builder.h>
+#include <storage_literals/storage_literals.h>
+
+#include <android/snapshot/snapshot.pb.h>
+#include <libsnapshot/test_helpers.h>
+#include "utility.h"
+
+namespace android {
+namespace snapshot {
+
+using android::base::unique_fd;
+using android::dm::DeviceMapper;
+using android::dm::DmDeviceState;
+using android::fiemap::FiemapStatus;
+using android::fiemap::IImageManager;
+using android::fs_mgr::BlockDeviceInfo;
+using android::fs_mgr::CreateLogicalPartitionParams;
+using android::fs_mgr::DestroyLogicalPartition;
+using android::fs_mgr::EnsurePathMounted;
+using android::fs_mgr::EnsurePathUnmounted;
+using android::fs_mgr::Extent;
+using android::fs_mgr::Fstab;
+using android::fs_mgr::GetPartitionGroupName;
+using android::fs_mgr::GetPartitionName;
+using android::fs_mgr::Interval;
+using android::fs_mgr::MetadataBuilder;
+using android::fs_mgr::SlotSuffixForSlotNumber;
+using chromeos_update_engine::DeltaArchiveManifest;
+using chromeos_update_engine::DynamicPartitionGroup;
+using chromeos_update_engine::PartitionUpdate;
+using namespace ::testing;
+using namespace android::storage_literals;
+using namespace std::chrono_literals;
+using namespace std::string_literals;
+
+// Global states. See test_helpers.h.
+std::unique_ptr<SnapshotManager> sm;
+TestDeviceInfo* test_device = nullptr;
+std::string fake_super;
+
+void MountMetadata();
+
+class SnapshotTest : public ::testing::Test {
+  public:
+    SnapshotTest() : dm_(DeviceMapper::Instance()) {}
+
+    // This is exposed for main.
+    void Cleanup() {
+        InitializeState();
+        CleanupTestArtifacts();
+    }
+
+  protected:
+    void SetUp() override {
+        SKIP_IF_NON_VIRTUAL_AB();
+
+        SnapshotTestPropertyFetcher::SetUp();
+        InitializeState();
+        CleanupTestArtifacts();
+        FormatFakeSuper();
+        MountMetadata();
+        ASSERT_TRUE(sm->BeginUpdate());
+    }
+
+    void TearDown() override {
+        RETURN_IF_NON_VIRTUAL_AB();
+
+        lock_ = nullptr;
+
+        CleanupTestArtifacts();
+        SnapshotTestPropertyFetcher::TearDown();
+    }
+
+    void InitializeState() {
+        ASSERT_TRUE(sm->EnsureImageManager());
+        image_manager_ = sm->image_manager();
+
+        test_device->set_slot_suffix("_a");
+    }
+
+    void CleanupTestArtifacts() {
+        // Normally cancelling inside a merge is not allowed. Since these
+        // are tests, we don't care, destroy everything that might exist.
+        // Note we hardcode this list because of an annoying quirk: when
+        // completing a merge, the snapshot stops existing, so we can't
+        // get an accurate list to remove.
+        lock_ = nullptr;
+
+        std::vector<std::string> snapshots = {"test-snapshot", "test_partition_a",
+                                              "test_partition_b"};
+        for (const auto& snapshot : snapshots) {
+            ASSERT_TRUE(DeleteSnapshotDevice(snapshot));
+            DeleteBackingImage(image_manager_, snapshot + "-cow-img");
+
+            auto status_file = sm->GetSnapshotStatusFilePath(snapshot);
+            android::base::RemoveFileIfExists(status_file);
+        }
+
+        // Remove stale partitions in fake super.
+        std::vector<std::string> partitions = {
+                "base-device",
+                "test_partition_b",
+                "test_partition_b-base",
+        };
+        for (const auto& partition : partitions) {
+            DeleteDevice(partition);
+        }
+
+        if (sm->GetUpdateState() != UpdateState::None) {
+            auto state_file = sm->GetStateFilePath();
+            unlink(state_file.c_str());
+        }
+    }
+
+    bool AcquireLock() {
+        lock_ = sm->LockExclusive();
+        return !!lock_;
+    }
+
+    // This is so main() can instantiate this to invoke Cleanup.
+    virtual void TestBody() override {}
+
+    void FormatFakeSuper() {
+        BlockDeviceInfo super_device("super", kSuperSize, 0, 0, 4096);
+        std::vector<BlockDeviceInfo> devices = {super_device};
+
+        auto builder = MetadataBuilder::New(devices, "super", 65536, 2);
+        ASSERT_NE(builder, nullptr);
+
+        auto metadata = builder->Export();
+        ASSERT_NE(metadata, nullptr);
+
+        TestPartitionOpener opener(fake_super);
+        ASSERT_TRUE(FlashPartitionTable(opener, fake_super, *metadata.get()));
+    }
+
+    // If |path| is non-null, the partition will be mapped after creation.
+    bool CreatePartition(const std::string& name, uint64_t size, std::string* path = nullptr) {
+        TestPartitionOpener opener(fake_super);
+        auto builder = MetadataBuilder::New(opener, "super", 0);
+        if (!builder) return false;
+
+        auto partition = builder->AddPartition(name, 0);
+        if (!partition) return false;
+        if (!builder->ResizePartition(partition, size)) {
+            return false;
+        }
+
+        // Update the source slot.
+        auto metadata = builder->Export();
+        if (!metadata) return false;
+        if (!UpdatePartitionTable(opener, "super", *metadata.get(), 0)) {
+            return false;
+        }
+
+        if (!path) return true;
+
+        CreateLogicalPartitionParams params = {
+                .block_device = fake_super,
+                .metadata = metadata.get(),
+                .partition_name = name,
+                .force_writable = true,
+                .timeout_ms = 10s,
+        };
+        return CreateLogicalPartition(params, path);
+    }
+
+    bool MapUpdatePartitions() {
+        TestPartitionOpener opener(fake_super);
+        auto builder = MetadataBuilder::NewForUpdate(opener, "super", 0, 1);
+        if (!builder) return false;
+
+        auto metadata = builder->Export();
+        if (!metadata) return false;
+
+        // Update the destination slot, mark it as updated.
+        if (!UpdatePartitionTable(opener, "super", *metadata.get(), 1)) {
+            return false;
+        }
+
+        for (const auto& partition : metadata->partitions) {
+            CreateLogicalPartitionParams params = {
+                    .block_device = fake_super,
+                    .metadata = metadata.get(),
+                    .partition = &partition,
+                    .force_writable = true,
+                    .timeout_ms = 10s,
+                    .device_name = GetPartitionName(partition) + "-base",
+            };
+            std::string ignore_path;
+            if (!CreateLogicalPartition(params, &ignore_path)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    AssertionResult DeleteSnapshotDevice(const std::string& snapshot) {
+        AssertionResult res = AssertionSuccess();
+        if (!(res = DeleteDevice(snapshot))) return res;
+        if (!(res = DeleteDevice(snapshot + "-inner"))) return res;
+        if (!(res = DeleteDevice(snapshot + "-cow"))) return res;
+        if (!image_manager_->UnmapImageIfExists(snapshot + "-cow-img")) {
+            return AssertionFailure() << "Cannot unmap image " << snapshot << "-cow-img";
+        }
+        if (!(res = DeleteDevice(snapshot + "-base"))) return res;
+        return AssertionSuccess();
+    }
+
+    AssertionResult DeleteDevice(const std::string& device) {
+        if (!dm_.DeleteDeviceIfExists(device)) {
+            return AssertionFailure() << "Can't delete " << device;
+        }
+        return AssertionSuccess();
+    }
+
+    AssertionResult CreateCowImage(const std::string& name) {
+        if (!sm->CreateCowImage(lock_.get(), name)) {
+            return AssertionFailure() << "Cannot create COW image " << name;
+        }
+        std::string cow_device;
+        auto map_res = MapCowImage(name, 10s, &cow_device);
+        if (!map_res) {
+            return map_res;
+        }
+        if (!InitializeCow(cow_device)) {
+            return AssertionFailure() << "Cannot zero fill " << cow_device;
+        }
+        if (!sm->UnmapCowImage(name)) {
+            return AssertionFailure() << "Cannot unmap " << name << " after zero filling it";
+        }
+        return AssertionSuccess();
+    }
+
+    AssertionResult MapCowImage(const std::string& name,
+                                const std::chrono::milliseconds& timeout_ms, std::string* path) {
+        auto cow_image_path = sm->MapCowImage(name, timeout_ms);
+        if (!cow_image_path.has_value()) {
+            return AssertionFailure() << "Cannot map cow image " << name;
+        }
+        *path = *cow_image_path;
+        return AssertionSuccess();
+    }
+
+    // Prepare A/B slot for a partition named "test_partition".
+    AssertionResult PrepareOneSnapshot(uint64_t device_size,
+                                       std::string* out_snap_device = nullptr) {
+        std::string base_device, cow_device, snap_device;
+        if (!CreatePartition("test_partition_a", device_size)) {
+            return AssertionFailure();
+        }
+        if (!MapUpdatePartitions()) {
+            return AssertionFailure();
+        }
+        if (!dm_.GetDmDevicePathByName("test_partition_b-base", &base_device)) {
+            return AssertionFailure();
+        }
+        SnapshotStatus status;
+        status.set_name("test_partition_b");
+        status.set_device_size(device_size);
+        status.set_snapshot_size(device_size);
+        status.set_cow_file_size(device_size);
+        if (!sm->CreateSnapshot(lock_.get(), &status)) {
+            return AssertionFailure();
+        }
+        if (!CreateCowImage("test_partition_b")) {
+            return AssertionFailure();
+        }
+        if (!MapCowImage("test_partition_b", 10s, &cow_device)) {
+            return AssertionFailure();
+        }
+        if (!sm->MapSnapshot(lock_.get(), "test_partition_b", base_device, cow_device, 10s,
+                             &snap_device)) {
+            return AssertionFailure();
+        }
+        if (out_snap_device) {
+            *out_snap_device = std::move(snap_device);
+        }
+        return AssertionSuccess();
+    }
+
+    // Simulate a reboot into the new slot.
+    AssertionResult SimulateReboot() {
+        lock_ = nullptr;
+        if (!sm->FinishedSnapshotWrites(false)) {
+            return AssertionFailure();
+        }
+        if (!dm_.DeleteDevice("test_partition_b")) {
+            return AssertionFailure();
+        }
+        if (!DestroyLogicalPartition("test_partition_b-base")) {
+            return AssertionFailure();
+        }
+        if (!sm->UnmapCowImage("test_partition_b")) {
+            return AssertionFailure();
+        }
+        return AssertionSuccess();
+    }
+
+    static constexpr std::chrono::milliseconds snapshot_timeout_ = 5s;
+    DeviceMapper& dm_;
+    std::unique_ptr<SnapshotManager::LockedFile> lock_;
+    android::fiemap::IImageManager* image_manager_ = nullptr;
+    std::string fake_super_;
+};
+
+TEST_F(SnapshotTest, CreateSnapshot) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kDeviceSize = 1024 * 1024;
+    SnapshotStatus status;
+    status.set_name("test-snapshot");
+    status.set_device_size(kDeviceSize);
+    status.set_snapshot_size(kDeviceSize);
+    status.set_cow_file_size(kDeviceSize);
+    ASSERT_TRUE(sm->CreateSnapshot(lock_.get(), &status));
+    ASSERT_TRUE(CreateCowImage("test-snapshot"));
+
+    std::vector<std::string> snapshots;
+    ASSERT_TRUE(sm->ListSnapshots(lock_.get(), &snapshots));
+    ASSERT_EQ(snapshots.size(), 1);
+    ASSERT_EQ(snapshots[0], "test-snapshot");
+
+    // Scope so delete can re-acquire the snapshot file lock.
+    {
+        SnapshotStatus status;
+        ASSERT_TRUE(sm->ReadSnapshotStatus(lock_.get(), "test-snapshot", &status));
+        ASSERT_EQ(status.state(), SnapshotState::CREATED);
+        ASSERT_EQ(status.device_size(), kDeviceSize);
+        ASSERT_EQ(status.snapshot_size(), kDeviceSize);
+    }
+
+    ASSERT_TRUE(sm->UnmapSnapshot(lock_.get(), "test-snapshot"));
+    ASSERT_TRUE(sm->UnmapCowImage("test-snapshot"));
+    ASSERT_TRUE(sm->DeleteSnapshot(lock_.get(), "test-snapshot"));
+}
+
+TEST_F(SnapshotTest, MapSnapshot) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kDeviceSize = 1024 * 1024;
+    SnapshotStatus status;
+    status.set_name("test-snapshot");
+    status.set_device_size(kDeviceSize);
+    status.set_snapshot_size(kDeviceSize);
+    status.set_cow_file_size(kDeviceSize);
+    ASSERT_TRUE(sm->CreateSnapshot(lock_.get(), &status));
+    ASSERT_TRUE(CreateCowImage("test-snapshot"));
+
+    std::string base_device;
+    ASSERT_TRUE(CreatePartition("base-device", kDeviceSize, &base_device));
+
+    std::string cow_device;
+    ASSERT_TRUE(MapCowImage("test-snapshot", 10s, &cow_device));
+
+    std::string snap_device;
+    ASSERT_TRUE(sm->MapSnapshot(lock_.get(), "test-snapshot", base_device, cow_device, 10s,
+                                &snap_device));
+    ASSERT_TRUE(android::base::StartsWith(snap_device, "/dev/block/dm-"));
+}
+
+TEST_F(SnapshotTest, MapPartialSnapshot) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kSnapshotSize = 1024 * 1024;
+    static const uint64_t kDeviceSize = 1024 * 1024 * 2;
+    SnapshotStatus status;
+    status.set_name("test-snapshot");
+    status.set_device_size(kDeviceSize);
+    status.set_snapshot_size(kSnapshotSize);
+    status.set_cow_file_size(kSnapshotSize);
+    ASSERT_TRUE(sm->CreateSnapshot(lock_.get(), &status));
+    ASSERT_TRUE(CreateCowImage("test-snapshot"));
+
+    std::string base_device;
+    ASSERT_TRUE(CreatePartition("base-device", kDeviceSize, &base_device));
+
+    std::string cow_device;
+    ASSERT_TRUE(MapCowImage("test-snapshot", 10s, &cow_device));
+
+    std::string snap_device;
+    ASSERT_TRUE(sm->MapSnapshot(lock_.get(), "test-snapshot", base_device, cow_device, 10s,
+                                &snap_device));
+    ASSERT_TRUE(android::base::StartsWith(snap_device, "/dev/block/dm-"));
+}
+
+TEST_F(SnapshotTest, NoMergeBeforeReboot) {
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Merge should fail, since the slot hasn't changed.
+    ASSERT_FALSE(sm->InitiateMerge());
+}
+
+TEST_F(SnapshotTest, CleanFirstStageMount) {
+    // If there's no update in progress, there should be no first-stage mount
+    // needed.
+    TestDeviceInfo* info = new TestDeviceInfo(fake_super);
+    auto sm = SnapshotManager::NewForFirstStageMount(info);
+    ASSERT_NE(sm, nullptr);
+    ASSERT_FALSE(sm->NeedSnapshotsInFirstStageMount());
+}
+
+TEST_F(SnapshotTest, FirstStageMountAfterRollback) {
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // We didn't change the slot, so we shouldn't need snapshots.
+    TestDeviceInfo* info = new TestDeviceInfo(fake_super);
+    auto sm = SnapshotManager::NewForFirstStageMount(info);
+    ASSERT_NE(sm, nullptr);
+    ASSERT_FALSE(sm->NeedSnapshotsInFirstStageMount());
+
+    auto indicator = sm->GetRollbackIndicatorPath();
+    ASSERT_EQ(access(indicator.c_str(), R_OK), 0);
+}
+
+TEST_F(SnapshotTest, Merge) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kDeviceSize = 1024 * 1024;
+    std::string snap_device;
+    ASSERT_TRUE(PrepareOneSnapshot(kDeviceSize, &snap_device));
+
+    std::string test_string = "This is a test string.";
+    {
+        unique_fd fd(open(snap_device.c_str(), O_RDWR | O_CLOEXEC | O_SYNC));
+        ASSERT_GE(fd, 0);
+        ASSERT_TRUE(android::base::WriteFully(fd, test_string.data(), test_string.size()));
+    }
+
+    // Note: we know there is no inner/outer dm device since we didn't request
+    // a linear segment.
+    DeviceMapper::TargetInfo target;
+    ASSERT_TRUE(sm->IsSnapshotDevice("test_partition_b", &target));
+    ASSERT_EQ(DeviceMapper::GetTargetType(target.spec), "snapshot");
+
+    // Release the lock.
+    lock_ = nullptr;
+
+    // Done updating.
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    test_device->set_slot_suffix("_b");
+    ASSERT_TRUE(sm->InitiateMerge());
+
+    // The device should have been switched to a snapshot-merge target.
+    ASSERT_TRUE(sm->IsSnapshotDevice("test_partition_b", &target));
+    ASSERT_EQ(DeviceMapper::GetTargetType(target.spec), "snapshot-merge");
+
+    // We should not be able to cancel an update now.
+    ASSERT_FALSE(sm->CancelUpdate());
+
+    ASSERT_EQ(sm->ProcessUpdateState(), UpdateState::MergeCompleted);
+    ASSERT_EQ(sm->GetUpdateState(), UpdateState::None);
+
+    // The device should no longer be a snapshot or snapshot-merge.
+    ASSERT_FALSE(sm->IsSnapshotDevice("test_partition_b"));
+
+    // Test that we can read back the string we wrote to the snapshot. Note
+    // that the base device is gone now. |snap_device| contains the correct
+    // partition.
+    unique_fd fd(open(snap_device.c_str(), O_RDONLY | O_CLOEXEC));
+    ASSERT_GE(fd, 0);
+
+    std::string buffer(test_string.size(), '\0');
+    ASSERT_TRUE(android::base::ReadFully(fd, buffer.data(), buffer.size()));
+    ASSERT_EQ(test_string, buffer);
+}
+
+TEST_F(SnapshotTest, FirstStageMountAndMerge) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kDeviceSize = 1024 * 1024;
+    ASSERT_TRUE(PrepareOneSnapshot(kDeviceSize));
+    ASSERT_TRUE(SimulateReboot());
+
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    ASSERT_TRUE(AcquireLock());
+
+    // Validate that we have a snapshot device.
+    SnapshotStatus status;
+    ASSERT_TRUE(init->ReadSnapshotStatus(lock_.get(), "test_partition_b", &status));
+    ASSERT_EQ(status.state(), SnapshotState::CREATED);
+
+    DeviceMapper::TargetInfo target;
+    auto dm_name = init->GetSnapshotDeviceName("test_partition_b", status);
+    ASSERT_TRUE(init->IsSnapshotDevice(dm_name, &target));
+    ASSERT_EQ(DeviceMapper::GetTargetType(target.spec), "snapshot");
+}
+
+TEST_F(SnapshotTest, FlashSuperDuringUpdate) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kDeviceSize = 1024 * 1024;
+    ASSERT_TRUE(PrepareOneSnapshot(kDeviceSize));
+    ASSERT_TRUE(SimulateReboot());
+
+    // Reflash the super partition.
+    FormatFakeSuper();
+    ASSERT_TRUE(CreatePartition("test_partition_b", kDeviceSize));
+
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    ASSERT_TRUE(AcquireLock());
+
+    SnapshotStatus status;
+    ASSERT_TRUE(init->ReadSnapshotStatus(lock_.get(), "test_partition_b", &status));
+
+    // We should not get a snapshot device now.
+    DeviceMapper::TargetInfo target;
+    auto dm_name = init->GetSnapshotDeviceName("test_partition_b", status);
+    ASSERT_FALSE(init->IsSnapshotDevice(dm_name, &target));
+
+    // We should see a cancelled update as well.
+    lock_ = nullptr;
+    ASSERT_EQ(sm->ProcessUpdateState(), UpdateState::Cancelled);
+}
+
+TEST_F(SnapshotTest, FlashSuperDuringMerge) {
+    ASSERT_TRUE(AcquireLock());
+
+    static const uint64_t kDeviceSize = 1024 * 1024;
+    ASSERT_TRUE(PrepareOneSnapshot(kDeviceSize));
+    ASSERT_TRUE(SimulateReboot());
+
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+    ASSERT_TRUE(init->InitiateMerge());
+
+    // Now, reflash super. Note that we haven't called ProcessUpdateState, so the
+    // status is still Merging.
+    ASSERT_TRUE(DeleteSnapshotDevice("test_partition_b"));
+    ASSERT_TRUE(init->image_manager()->UnmapImageIfExists("test_partition_b-cow-img"));
+    FormatFakeSuper();
+    ASSERT_TRUE(CreatePartition("test_partition_b", kDeviceSize));
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // Because the status is Merging, we must call ProcessUpdateState, which should
+    // detect a cancelled update.
+    ASSERT_EQ(sm->ProcessUpdateState(), UpdateState::Cancelled);
+    ASSERT_EQ(sm->GetUpdateState(), UpdateState::None);
+}
+
+TEST_F(SnapshotTest, UpdateBootControlHal) {
+    ASSERT_TRUE(AcquireLock());
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::None));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::NONE);
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::Initiated));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::NONE);
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::Unverified));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::SNAPSHOTTED);
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::Merging));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::MERGING);
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::MergeNeedsReboot));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::NONE);
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::MergeCompleted));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::NONE);
+
+    ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::MergeFailed));
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::MERGING);
+}
+
+enum class Request { UNKNOWN, LOCK_SHARED, LOCK_EXCLUSIVE, UNLOCK, EXIT };
+std::ostream& operator<<(std::ostream& os, Request request) {
+    switch (request) {
+        case Request::LOCK_SHARED:
+            return os << "Shared";
+        case Request::LOCK_EXCLUSIVE:
+            return os << "Exclusive";
+        case Request::UNLOCK:
+            return os << "Unlock";
+        case Request::EXIT:
+            return os << "Exit";
+        case Request::UNKNOWN:
+            [[fallthrough]];
+        default:
+            return os << "Unknown";
+    }
+}
+
+class LockTestConsumer {
+  public:
+    AssertionResult MakeRequest(Request new_request) {
+        {
+            std::unique_lock<std::mutex> ulock(mutex_);
+            requests_.push_back(new_request);
+        }
+        cv_.notify_all();
+        return AssertionSuccess() << "Request " << new_request << " successful";
+    }
+
+    template <typename R, typename P>
+    AssertionResult WaitFulfill(std::chrono::duration<R, P> timeout) {
+        std::unique_lock<std::mutex> ulock(mutex_);
+        if (cv_.wait_for(ulock, timeout, [this] { return requests_.empty(); })) {
+            return AssertionSuccess() << "All requests_ fulfilled.";
+        }
+        return AssertionFailure() << "Timeout waiting for fulfilling " << requests_.size()
+                                  << " request(s), first one is "
+                                  << (requests_.empty() ? Request::UNKNOWN : requests_.front());
+    }
+
+    void StartHandleRequestsInBackground() {
+        future_ = std::async(std::launch::async, &LockTestConsumer::HandleRequests, this);
+    }
+
+  private:
+    void HandleRequests() {
+        static constexpr auto consumer_timeout = 3s;
+
+        auto next_request = Request::UNKNOWN;
+        do {
+            // Peek next request.
+            {
+                std::unique_lock<std::mutex> ulock(mutex_);
+                if (cv_.wait_for(ulock, consumer_timeout, [this] { return !requests_.empty(); })) {
+                    next_request = requests_.front();
+                } else {
+                    next_request = Request::EXIT;
+                }
+            }
+
+            // Handle next request.
+            switch (next_request) {
+                case Request::LOCK_SHARED: {
+                    lock_ = sm->LockShared();
+                } break;
+                case Request::LOCK_EXCLUSIVE: {
+                    lock_ = sm->LockExclusive();
+                } break;
+                case Request::EXIT:
+                    [[fallthrough]];
+                case Request::UNLOCK: {
+                    lock_.reset();
+                } break;
+                case Request::UNKNOWN:
+                    [[fallthrough]];
+                default:
+                    break;
+            }
+
+            // Pop next request. This thread is the only thread that
+            // pops from the front of the requests_ deque.
+            {
+                std::unique_lock<std::mutex> ulock(mutex_);
+                if (next_request == Request::EXIT) {
+                    requests_.clear();
+                } else {
+                    requests_.pop_front();
+                }
+            }
+            cv_.notify_all();
+        } while (next_request != Request::EXIT);
+    }
+
+    std::mutex mutex_;
+    std::condition_variable cv_;
+    std::deque<Request> requests_;
+    std::unique_ptr<SnapshotManager::LockedFile> lock_;
+    std::future<void> future_;
+};
+
+class LockTest : public ::testing::Test {
+  public:
+    void SetUp() {
+        SKIP_IF_NON_VIRTUAL_AB();
+        first_consumer.StartHandleRequestsInBackground();
+        second_consumer.StartHandleRequestsInBackground();
+    }
+
+    void TearDown() {
+        RETURN_IF_NON_VIRTUAL_AB();
+        EXPECT_TRUE(first_consumer.MakeRequest(Request::EXIT));
+        EXPECT_TRUE(second_consumer.MakeRequest(Request::EXIT));
+    }
+
+    static constexpr auto request_timeout = 500ms;
+    LockTestConsumer first_consumer;
+    LockTestConsumer second_consumer;
+};
+
+TEST_F(LockTest, SharedShared) {
+    ASSERT_TRUE(first_consumer.MakeRequest(Request::LOCK_SHARED));
+    ASSERT_TRUE(first_consumer.WaitFulfill(request_timeout));
+    ASSERT_TRUE(second_consumer.MakeRequest(Request::LOCK_SHARED));
+    ASSERT_TRUE(second_consumer.WaitFulfill(request_timeout));
+}
+
+using LockTestParam = std::pair<Request, Request>;
+class LockTestP : public LockTest, public ::testing::WithParamInterface<LockTestParam> {};
+TEST_P(LockTestP, Test) {
+    ASSERT_TRUE(first_consumer.MakeRequest(GetParam().first));
+    ASSERT_TRUE(first_consumer.WaitFulfill(request_timeout));
+    ASSERT_TRUE(second_consumer.MakeRequest(GetParam().second));
+    ASSERT_FALSE(second_consumer.WaitFulfill(request_timeout))
+            << "Should not be able to " << GetParam().second << " while separate thread "
+            << GetParam().first;
+    ASSERT_TRUE(first_consumer.MakeRequest(Request::UNLOCK));
+    ASSERT_TRUE(second_consumer.WaitFulfill(request_timeout))
+            << "Should be able to hold lock that is released by separate thread";
+}
+INSTANTIATE_TEST_SUITE_P(
+        LockTest, LockTestP,
+        testing::Values(LockTestParam{Request::LOCK_EXCLUSIVE, Request::LOCK_EXCLUSIVE},
+                        LockTestParam{Request::LOCK_EXCLUSIVE, Request::LOCK_SHARED},
+                        LockTestParam{Request::LOCK_SHARED, Request::LOCK_EXCLUSIVE}),
+        [](const testing::TestParamInfo<LockTestP::ParamType>& info) {
+            std::stringstream ss;
+            ss << info.param.first << info.param.second;
+            return ss.str();
+        });
+
+class SnapshotUpdateTest : public SnapshotTest {
+  public:
+    void SetUp() override {
+        SKIP_IF_NON_VIRTUAL_AB();
+
+        SnapshotTest::SetUp();
+        Cleanup();
+
+        // Cleanup() changes slot suffix, so initialize it again.
+        test_device->set_slot_suffix("_a");
+
+        opener_ = std::make_unique<TestPartitionOpener>(fake_super);
+
+        // Create a fake update package metadata.
+        // Not using full name "system", "vendor", "product" because these names collide with the
+        // mapped partitions on the running device.
+        // Each test modifies manifest_ slightly to indicate changes to the partition layout.
+        group_ = manifest_.mutable_dynamic_partition_metadata()->add_groups();
+        group_->set_name("group");
+        group_->set_size(kGroupSize);
+        group_->add_partition_names("sys");
+        group_->add_partition_names("vnd");
+        group_->add_partition_names("prd");
+        sys_ = manifest_.add_partitions();
+        sys_->set_partition_name("sys");
+        SetSize(sys_, 3_MiB);
+        vnd_ = manifest_.add_partitions();
+        vnd_->set_partition_name("vnd");
+        SetSize(vnd_, 3_MiB);
+        prd_ = manifest_.add_partitions();
+        prd_->set_partition_name("prd");
+        SetSize(prd_, 3_MiB);
+
+        // Initialize source partition metadata using |manifest_|.
+        src_ = MetadataBuilder::New(*opener_, "super", 0);
+        ASSERT_NE(src_, nullptr);
+        ASSERT_TRUE(FillFakeMetadata(src_.get(), manifest_, "_a"));
+        // Add sys_b which is like system_other.
+        ASSERT_TRUE(src_->AddGroup("group_b", kGroupSize));
+        auto partition = src_->AddPartition("sys_b", "group_b", 0);
+        ASSERT_NE(nullptr, partition);
+        ASSERT_TRUE(src_->ResizePartition(partition, 1_MiB));
+        auto metadata = src_->Export();
+        ASSERT_NE(nullptr, metadata);
+        ASSERT_TRUE(UpdatePartitionTable(*opener_, "super", *metadata.get(), 0));
+
+        // Map source partitions. Additionally, map sys_b to simulate system_other after flashing.
+        std::string path;
+        for (const auto& name : {"sys_a", "vnd_a", "prd_a", "sys_b"}) {
+            ASSERT_TRUE(CreateLogicalPartition(
+                    CreateLogicalPartitionParams{
+                            .block_device = fake_super,
+                            .metadata_slot = 0,
+                            .partition_name = name,
+                            .timeout_ms = 1s,
+                            .partition_opener = opener_.get(),
+                    },
+                    &path));
+            ASSERT_TRUE(WriteRandomData(path));
+            auto hash = GetHash(path);
+            ASSERT_TRUE(hash.has_value());
+            hashes_[name] = *hash;
+        }
+    }
+    void TearDown() override {
+        RETURN_IF_NON_VIRTUAL_AB();
+
+        Cleanup();
+        SnapshotTest::TearDown();
+    }
+    void Cleanup() {
+        if (!image_manager_) {
+            InitializeState();
+        }
+        MountMetadata();
+        for (const auto& suffix : {"_a", "_b"}) {
+            test_device->set_slot_suffix(suffix);
+            EXPECT_TRUE(sm->CancelUpdate()) << suffix;
+        }
+        EXPECT_TRUE(UnmapAll());
+    }
+
+    AssertionResult IsPartitionUnchanged(const std::string& name) {
+        std::string path;
+        if (!dm_.GetDmDevicePathByName(name, &path)) {
+            return AssertionFailure() << "Path of " << name << " cannot be determined";
+        }
+        auto hash = GetHash(path);
+        if (!hash.has_value()) {
+            return AssertionFailure() << "Cannot read partition " << name << ": " << path;
+        }
+        auto it = hashes_.find(name);
+        if (it == hashes_.end()) {
+            return AssertionFailure() << "No existing hash for " << name << ". Bad test code?";
+        }
+        if (it->second != *hash) {
+            return AssertionFailure() << "Content of " << name << " has changed";
+        }
+        return AssertionSuccess();
+    }
+
+    std::optional<uint64_t> GetSnapshotSize(const std::string& name) {
+        if (!AcquireLock()) {
+            return std::nullopt;
+        }
+        auto local_lock = std::move(lock_);
+
+        SnapshotStatus status;
+        if (!sm->ReadSnapshotStatus(local_lock.get(), name, &status)) {
+            return std::nullopt;
+        }
+        return status.snapshot_size();
+    }
+
+    AssertionResult UnmapAll() {
+        for (const auto& name : {"sys", "vnd", "prd"}) {
+            if (!dm_.DeleteDeviceIfExists(name + "_a"s)) {
+                return AssertionFailure() << "Cannot unmap " << name << "_a";
+            }
+            if (!DeleteSnapshotDevice(name + "_b"s)) {
+                return AssertionFailure() << "Cannot delete snapshot " << name << "_b";
+            }
+        }
+        return AssertionSuccess();
+    }
+
+    AssertionResult MapUpdateSnapshot(const std::string& name, std::string* path = nullptr) {
+        std::string real_path;
+        if (!sm->MapUpdateSnapshot(
+                    CreateLogicalPartitionParams{
+                            .block_device = fake_super,
+                            .metadata_slot = 1,
+                            .partition_name = name,
+                            .timeout_ms = 10s,
+                            .partition_opener = opener_.get(),
+                    },
+                    &real_path)) {
+            return AssertionFailure() << "Unable to map snapshot " << name;
+        }
+        if (path) {
+            *path = real_path;
+        }
+        return AssertionSuccess() << "Mapped snapshot " << name << " to " << real_path;
+    }
+
+    AssertionResult WriteSnapshotAndHash(const std::string& name,
+                                         std::optional<size_t> size = std::nullopt) {
+        std::string path;
+        auto res = MapUpdateSnapshot(name, &path);
+        if (!res) {
+            return res;
+        }
+
+        std::string size_string = size ? (std::to_string(*size) + " bytes") : "";
+
+        if (!WriteRandomData(path, size, &hashes_[name])) {
+            return AssertionFailure() << "Unable to write " << size_string << " to " << path
+                                      << " for partition " << name;
+        }
+
+        return AssertionSuccess() << "Written " << size_string << " to " << path
+                                  << " for snapshot partition " << name
+                                  << ", hash: " << hashes_[name];
+    }
+
+    AssertionResult MapUpdateSnapshots(const std::vector<std::string>& names = {"sys_b", "vnd_b",
+                                                                                "prd_b"}) {
+        for (const auto& name : names) {
+            auto res = MapUpdateSnapshot(name);
+            if (!res) {
+                return res;
+            }
+        }
+        return AssertionSuccess();
+    }
+
+    // Create fake install operations to grow the COW device size.
+    void AddOperation(PartitionUpdate* partition_update, uint64_t size_bytes = 0) {
+        auto e = partition_update->add_operations()->add_dst_extents();
+        e->set_start_block(0);
+        if (size_bytes == 0) {
+            size_bytes = GetSize(partition_update);
+        }
+        e->set_num_blocks(size_bytes / manifest_.block_size());
+    }
+
+    void AddOperationForPartitions(std::vector<PartitionUpdate*> partitions = {}) {
+        if (partitions.empty()) {
+            partitions = {sys_, vnd_, prd_};
+        }
+        for (auto* partition : partitions) {
+            AddOperation(partition);
+        }
+    }
+
+    std::unique_ptr<TestPartitionOpener> opener_;
+    DeltaArchiveManifest manifest_;
+    std::unique_ptr<MetadataBuilder> src_;
+    std::map<std::string, std::string> hashes_;
+
+    PartitionUpdate* sys_ = nullptr;
+    PartitionUpdate* vnd_ = nullptr;
+    PartitionUpdate* prd_ = nullptr;
+    DynamicPartitionGroup* group_ = nullptr;
+};
+
+// Test full update flow executed by update_engine. Some partitions uses super empty space,
+// some uses images, and some uses both.
+// Also test UnmapUpdateSnapshot unmaps everything.
+// Also test first stage mount and merge after this.
+TEST_F(SnapshotUpdateTest, FullUpdateFlow) {
+    // OTA client blindly unmaps all partitions that are possibly mapped.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(sm->UnmapUpdateSnapshot(name));
+    }
+
+    // Grow all partitions.
+    constexpr uint64_t partition_size = 3788_KiB;
+    SetSize(sys_, partition_size);
+    SetSize(vnd_, partition_size);
+    SetSize(prd_, partition_size);
+
+    AddOperationForPartitions();
+
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Test that partitions prioritize using space in super.
+    auto tgt = MetadataBuilder::New(*opener_, "super", 1);
+    ASSERT_NE(tgt, nullptr);
+    ASSERT_NE(nullptr, tgt->FindPartition("sys_b-cow"));
+    ASSERT_NE(nullptr, tgt->FindPartition("vnd_b-cow"));
+    ASSERT_EQ(nullptr, tgt->FindPartition("prd_b-cow"));
+
+    // Write some data to target partitions.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(WriteSnapshotAndHash(name, partition_size));
+    }
+
+    // Assert that source partitions aren't affected.
+    for (const auto& name : {"sys_a", "vnd_a", "prd_a"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    auto indicator = sm->GetRollbackIndicatorPath();
+    ASSERT_NE(access(indicator.c_str(), R_OK), 0);
+
+    // Check that the target partitions have the same content.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+
+    // Initiate the merge and wait for it to be completed.
+    ASSERT_TRUE(init->InitiateMerge());
+    ASSERT_EQ(UpdateState::MergeCompleted, init->ProcessUpdateState());
+
+    // Check that the target partitions have the same content after the merge.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name))
+                << "Content of " << name << " changes after the merge";
+    }
+}
+
+// Test that if new system partitions uses empty space in super, that region is not snapshotted.
+TEST_F(SnapshotUpdateTest, DirectWriteEmptySpace) {
+    GTEST_SKIP() << "b/141889746";
+    SetSize(sys_, 4_MiB);
+    // vnd_b and prd_b are unchanged.
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_EQ(3_MiB, GetSnapshotSize("sys_b").value_or(0));
+}
+
+// Test that if new system partitions uses space of old vendor partition, that region is
+// snapshotted.
+TEST_F(SnapshotUpdateTest, SnapshotOldPartitions) {
+    SetSize(sys_, 4_MiB);  // grows
+    SetSize(vnd_, 2_MiB);  // shrinks
+    // prd_b is unchanged
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_EQ(4_MiB, GetSnapshotSize("sys_b").value_or(0));
+}
+
+// Test that even if there seem to be empty space in target metadata, COW partition won't take
+// it because they are used by old partitions.
+TEST_F(SnapshotUpdateTest, CowPartitionDoNotTakeOldPartitions) {
+    SetSize(sys_, 2_MiB);  // shrinks
+    // vnd_b and prd_b are unchanged.
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    auto tgt = MetadataBuilder::New(*opener_, "super", 1);
+    ASSERT_NE(nullptr, tgt);
+    auto metadata = tgt->Export();
+    ASSERT_NE(nullptr, metadata);
+    std::vector<std::string> written;
+    // Write random data to all COW partitions in super
+    for (auto p : metadata->partitions) {
+        if (GetPartitionGroupName(metadata->groups[p.group_index]) != kCowGroupName) {
+            continue;
+        }
+        std::string path;
+        ASSERT_TRUE(CreateLogicalPartition(
+                CreateLogicalPartitionParams{
+                        .block_device = fake_super,
+                        .metadata = metadata.get(),
+                        .partition = &p,
+                        .timeout_ms = 1s,
+                        .partition_opener = opener_.get(),
+                },
+                &path));
+        ASSERT_TRUE(WriteRandomData(path));
+        written.push_back(GetPartitionName(p));
+    }
+    ASSERT_FALSE(written.empty())
+            << "No COW partitions are created even if there are empty space in super partition";
+
+    // Make sure source partitions aren't affected.
+    for (const auto& name : {"sys_a", "vnd_a", "prd_a"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+}
+
+// Test that it crashes after creating snapshot status file but before creating COW image, then
+// calling CreateUpdateSnapshots again works.
+TEST_F(SnapshotUpdateTest, SnapshotStatusFileWithoutCow) {
+    // Write some trash snapshot files to simulate leftovers from previous runs.
+    {
+        ASSERT_TRUE(AcquireLock());
+        auto local_lock = std::move(lock_);
+        SnapshotStatus status;
+        status.set_name("sys_b");
+        ASSERT_TRUE(sm->WriteSnapshotStatus(local_lock.get(), status));
+        ASSERT_TRUE(image_manager_->CreateBackingImage("sys_b-cow-img", 1_MiB,
+                                                       IImageManager::CREATE_IMAGE_DEFAULT));
+    }
+
+    // Redo the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->UnmapUpdateSnapshot("sys_b"));
+
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Check that target partitions can be mapped.
+    EXPECT_TRUE(MapUpdateSnapshots());
+}
+
+// Test that the old partitions are not modified.
+TEST_F(SnapshotUpdateTest, TestRollback) {
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->UnmapUpdateSnapshot("sys_b"));
+
+    AddOperationForPartitions();
+
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Write some data to target partitions.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(WriteSnapshotAndHash(name));
+    }
+
+    // Assert that source partitions aren't affected.
+    for (const auto& name : {"sys_a", "vnd_a", "prd_a"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // Check that the target partitions have the same content.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+
+    // Simulate shutting down the device again.
+    ASSERT_TRUE(UnmapAll());
+    init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_a"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_FALSE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // Assert that the source partitions aren't affected.
+    for (const auto& name : {"sys_a", "vnd_a", "prd_a"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+}
+
+// Test that if an update is applied but not booted into, it can be canceled.
+TEST_F(SnapshotUpdateTest, CancelAfterApply) {
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+    ASSERT_TRUE(sm->CancelUpdate());
+}
+
+static std::vector<Interval> ToIntervals(const std::vector<std::unique_ptr<Extent>>& extents) {
+    std::vector<Interval> ret;
+    std::transform(extents.begin(), extents.end(), std::back_inserter(ret),
+                   [](const auto& extent) { return extent->AsLinearExtent()->AsInterval(); });
+    return ret;
+}
+
+// Test that at the second update, old COW partition spaces are reclaimed.
+TEST_F(SnapshotUpdateTest, ReclaimCow) {
+    // Execute the first update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+    init = nullptr;
+
+    // Initiate the merge and wait for it to be completed.
+    auto new_sm = SnapshotManager::New(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_TRUE(new_sm->InitiateMerge());
+    ASSERT_EQ(UpdateState::MergeCompleted, new_sm->ProcessUpdateState());
+
+    // Execute the second update.
+    ASSERT_TRUE(new_sm->BeginUpdate());
+    ASSERT_TRUE(new_sm->CreateUpdateSnapshots(manifest_));
+
+    // Check that the old COW space is reclaimed and does not occupy space of mapped partitions.
+    auto src = MetadataBuilder::New(*opener_, "super", 1);
+    ASSERT_NE(src, nullptr);
+    auto tgt = MetadataBuilder::New(*opener_, "super", 0);
+    ASSERT_NE(tgt, nullptr);
+    for (const auto& cow_part_name : {"sys_a-cow", "vnd_a-cow", "prd_a-cow"}) {
+        auto* cow_part = tgt->FindPartition(cow_part_name);
+        ASSERT_NE(nullptr, cow_part) << cow_part_name << " does not exist in target metadata";
+        auto cow_intervals = ToIntervals(cow_part->extents());
+        for (const auto& old_part_name : {"sys_b", "vnd_b", "prd_b"}) {
+            auto* old_part = src->FindPartition(old_part_name);
+            ASSERT_NE(nullptr, old_part) << old_part_name << " does not exist in source metadata";
+            auto old_intervals = ToIntervals(old_part->extents());
+
+            auto intersect = Interval::Intersect(cow_intervals, old_intervals);
+            ASSERT_TRUE(intersect.empty()) << "COW uses space of source partitions";
+        }
+    }
+}
+
+TEST_F(SnapshotUpdateTest, RetrofitAfterRegularAb) {
+    constexpr auto kRetrofitGroupSize = kGroupSize / 2;
+
+    // Initialize device-mapper / disk
+    ASSERT_TRUE(UnmapAll());
+    FormatFakeSuper();
+
+    // Setup source partition metadata to have both _a and _b partitions.
+    src_ = MetadataBuilder::New(*opener_, "super", 0);
+    ASSERT_NE(nullptr, src_);
+    for (const auto& suffix : {"_a"s, "_b"s}) {
+        ASSERT_TRUE(src_->AddGroup(group_->name() + suffix, kRetrofitGroupSize));
+        for (const auto& name : {"sys"s, "vnd"s, "prd"s}) {
+            auto partition = src_->AddPartition(name + suffix, group_->name() + suffix, 0);
+            ASSERT_NE(nullptr, partition);
+            ASSERT_TRUE(src_->ResizePartition(partition, 2_MiB));
+        }
+    }
+    auto metadata = src_->Export();
+    ASSERT_NE(nullptr, metadata);
+    ASSERT_TRUE(UpdatePartitionTable(*opener_, "super", *metadata.get(), 0));
+
+    // Flash source partitions
+    std::string path;
+    for (const auto& name : {"sys_a", "vnd_a", "prd_a"}) {
+        ASSERT_TRUE(CreateLogicalPartition(
+                CreateLogicalPartitionParams{
+                        .block_device = fake_super,
+                        .metadata_slot = 0,
+                        .partition_name = name,
+                        .timeout_ms = 1s,
+                        .partition_opener = opener_.get(),
+                },
+                &path));
+        ASSERT_TRUE(WriteRandomData(path));
+        auto hash = GetHash(path);
+        ASSERT_TRUE(hash.has_value());
+        hashes_[name] = *hash;
+    }
+
+    // Setup manifest.
+    group_->set_size(kRetrofitGroupSize);
+    for (auto* partition : {sys_, vnd_, prd_}) {
+        SetSize(partition, 2_MiB);
+    }
+    AddOperationForPartitions();
+
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Test that COW image should not be created for retrofit devices; super
+    // should be big enough.
+    ASSERT_FALSE(image_manager_->BackingImageExists("sys_b-cow-img"));
+    ASSERT_FALSE(image_manager_->BackingImageExists("vnd_b-cow-img"));
+    ASSERT_FALSE(image_manager_->BackingImageExists("prd_b-cow-img"));
+
+    // Write some data to target partitions.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(WriteSnapshotAndHash(name));
+    }
+
+    // Assert that source partitions aren't affected.
+    for (const auto& name : {"sys_a", "vnd_a", "prd_a"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name));
+    }
+
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+}
+
+TEST_F(SnapshotUpdateTest, MergeCannotRemoveCow) {
+    // Make source partitions as big as possible to force COW image to be created.
+    SetSize(sys_, 5_MiB);
+    SetSize(vnd_, 5_MiB);
+    SetSize(prd_, 5_MiB);
+    src_ = MetadataBuilder::New(*opener_, "super", 0);
+    ASSERT_NE(src_, nullptr);
+    src_->RemoveGroupAndPartitions(group_->name() + "_a");
+    src_->RemoveGroupAndPartitions(group_->name() + "_b");
+    ASSERT_TRUE(FillFakeMetadata(src_.get(), manifest_, "_a"));
+    auto metadata = src_->Export();
+    ASSERT_NE(nullptr, metadata);
+    ASSERT_TRUE(UpdatePartitionTable(*opener_, "super", *metadata.get(), 0));
+
+    // OTA client blindly unmaps all partitions that are possibly mapped.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(sm->UnmapUpdateSnapshot(name));
+    }
+
+    // Add operations for sys. The whole device is written.
+    AddOperation(sys_);
+
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    // Normally we should use NewForFirstStageMount, but if so, "gsid.mapped_image.sys_b-cow-img"
+    // won't be set.
+    auto init = SnapshotManager::New(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // Keep an open handle to the cow device. This should cause the merge to
+    // be incomplete.
+    auto cow_path = android::base::GetProperty("gsid.mapped_image.sys_b-cow-img", "");
+    unique_fd fd(open(cow_path.c_str(), O_RDONLY | O_CLOEXEC));
+    ASSERT_GE(fd, 0);
+
+    // COW cannot be removed due to open fd, so expect a soft failure.
+    ASSERT_TRUE(init->InitiateMerge());
+    ASSERT_EQ(UpdateState::MergeNeedsReboot, init->ProcessUpdateState());
+
+    // Simulate shutting down the device.
+    fd.reset();
+    ASSERT_TRUE(UnmapAll());
+
+    // init does first stage mount again.
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // sys_b should be mapped as a dm-linear device directly.
+    ASSERT_FALSE(sm->IsSnapshotDevice("sys_b", nullptr));
+
+    // Merge should be able to complete now.
+    ASSERT_EQ(UpdateState::MergeCompleted, init->ProcessUpdateState());
+}
+
+class MetadataMountedTest : public ::testing::Test {
+  public:
+    // This is so main() can instantiate this to invoke Cleanup.
+    virtual void TestBody() override {}
+    void SetUp() override {
+        SKIP_IF_NON_VIRTUAL_AB();
+        metadata_dir_ = test_device->GetMetadataDir();
+        ASSERT_TRUE(ReadDefaultFstab(&fstab_));
+    }
+    void TearDown() override {
+        RETURN_IF_NON_VIRTUAL_AB();
+        SetUp();
+        // Remount /metadata
+        test_device->set_recovery(false);
+        EXPECT_TRUE(android::fs_mgr::EnsurePathMounted(&fstab_, metadata_dir_));
+    }
+    AssertionResult IsMetadataMounted() {
+        Fstab mounted_fstab;
+        if (!ReadFstabFromFile("/proc/mounts", &mounted_fstab)) {
+            ADD_FAILURE() << "Failed to scan mounted volumes";
+            return AssertionFailure() << "Failed to scan mounted volumes";
+        }
+
+        auto entry = GetEntryForPath(&fstab_, metadata_dir_);
+        if (entry == nullptr) {
+            return AssertionFailure() << "No mount point found in fstab for path " << metadata_dir_;
+        }
+
+        auto mv = GetEntryForMountPoint(&mounted_fstab, entry->mount_point);
+        if (mv == nullptr) {
+            return AssertionFailure() << metadata_dir_ << " is not mounted";
+        }
+        return AssertionSuccess() << metadata_dir_ << " is mounted";
+    }
+    std::string metadata_dir_;
+    Fstab fstab_;
+};
+
+void MountMetadata() {
+    MetadataMountedTest().TearDown();
+}
+
+TEST_F(MetadataMountedTest, Android) {
+    auto device = sm->EnsureMetadataMounted();
+    EXPECT_NE(nullptr, device);
+    device.reset();
+
+    EXPECT_TRUE(IsMetadataMounted());
+    EXPECT_TRUE(sm->CancelUpdate()) << "Metadata dir should never be unmounted in Android mode";
+}
+
+TEST_F(MetadataMountedTest, Recovery) {
+    test_device->set_recovery(true);
+    metadata_dir_ = test_device->GetMetadataDir();
+
+    EXPECT_TRUE(android::fs_mgr::EnsurePathUnmounted(&fstab_, metadata_dir_));
+    EXPECT_FALSE(IsMetadataMounted());
+
+    auto device = sm->EnsureMetadataMounted();
+    EXPECT_NE(nullptr, device);
+    EXPECT_TRUE(IsMetadataMounted());
+
+    device.reset();
+    EXPECT_FALSE(IsMetadataMounted());
+}
+
+// Test that during a merge, we can wipe data in recovery.
+TEST_F(SnapshotUpdateTest, MergeInRecovery) {
+    // Execute the first update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+    init = nullptr;
+
+    // Initiate the merge and then immediately stop it to simulate a reboot.
+    auto new_sm = SnapshotManager::New(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_TRUE(new_sm->InitiateMerge());
+    ASSERT_TRUE(UnmapAll());
+
+    // Simulate a reboot into recovery.
+    auto test_device = std::make_unique<TestDeviceInfo>(fake_super, "_b");
+    test_device->set_recovery(true);
+    new_sm = SnapshotManager::NewForFirstStageMount(test_device.release());
+
+    ASSERT_TRUE(new_sm->HandleImminentDataWipe());
+    ASSERT_EQ(new_sm->GetUpdateState(), UpdateState::None);
+}
+
+// Test that a merge does not clear the snapshot state in fastboot.
+TEST_F(SnapshotUpdateTest, MergeInFastboot) {
+    // Execute the first update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+    init = nullptr;
+
+    // Initiate the merge and then immediately stop it to simulate a reboot.
+    auto new_sm = SnapshotManager::New(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_TRUE(new_sm->InitiateMerge());
+    ASSERT_TRUE(UnmapAll());
+
+    // Simulate a reboot into recovery.
+    auto test_device = std::make_unique<TestDeviceInfo>(fake_super, "_b");
+    test_device->set_recovery(true);
+    new_sm = SnapshotManager::NewForFirstStageMount(test_device.release());
+
+    ASSERT_TRUE(new_sm->FinishMergeInRecovery());
+
+    auto mount = new_sm->EnsureMetadataMounted();
+    ASSERT_TRUE(mount && mount->HasDevice());
+    ASSERT_EQ(new_sm->ProcessUpdateState(), UpdateState::MergeCompleted);
+
+    // Finish the merge in a normal boot.
+    test_device = std::make_unique<TestDeviceInfo>(fake_super, "_b");
+    init = SnapshotManager::NewForFirstStageMount(test_device.release());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+    init = nullptr;
+
+    test_device = std::make_unique<TestDeviceInfo>(fake_super, "_b");
+    new_sm = SnapshotManager::NewForFirstStageMount(test_device.release());
+    ASSERT_EQ(new_sm->ProcessUpdateState(), UpdateState::MergeCompleted);
+    ASSERT_EQ(new_sm->ProcessUpdateState(), UpdateState::None);
+}
+
+// Test that after an OTA, before a merge, we can wipe data in recovery.
+TEST_F(SnapshotUpdateTest, DataWipeRollbackInRecovery) {
+    // Execute the first update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // Simulate a reboot into recovery.
+    auto test_device = new TestDeviceInfo(fake_super, "_b");
+    test_device->set_recovery(true);
+    auto new_sm = SnapshotManager::NewForFirstStageMount(test_device);
+
+    ASSERT_TRUE(new_sm->HandleImminentDataWipe());
+    // Manually mount metadata so that we can call GetUpdateState() below.
+    MountMetadata();
+    EXPECT_EQ(new_sm->GetUpdateState(), UpdateState::Unverified);
+    EXPECT_TRUE(test_device->IsSlotUnbootable(1));
+    EXPECT_FALSE(test_device->IsSlotUnbootable(0));
+}
+
+// Test that after an OTA and a bootloader rollback with no merge, we can wipe
+// data in recovery.
+TEST_F(SnapshotUpdateTest, DataWipeAfterRollback) {
+    // Execute the first update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // Simulate a rollback, with reboot into recovery.
+    auto test_device = new TestDeviceInfo(fake_super, "_a");
+    test_device->set_recovery(true);
+    auto new_sm = SnapshotManager::NewForFirstStageMount(test_device);
+
+    ASSERT_TRUE(new_sm->HandleImminentDataWipe());
+    EXPECT_EQ(new_sm->GetUpdateState(), UpdateState::None);
+    EXPECT_FALSE(test_device->IsSlotUnbootable(0));
+    EXPECT_FALSE(test_device->IsSlotUnbootable(1));
+}
+
+// Test update package that requests data wipe.
+TEST_F(SnapshotUpdateTest, DataWipeRequiredInPackage) {
+    AddOperationForPartitions();
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Write some data to target partitions.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(WriteSnapshotAndHash(name)) << name;
+    }
+
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(true /* wipe */));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // Simulate a reboot into recovery.
+    auto test_device = new TestDeviceInfo(fake_super, "_b");
+    test_device->set_recovery(true);
+    auto new_sm = SnapshotManager::NewForFirstStageMount(test_device);
+
+    ASSERT_TRUE(new_sm->HandleImminentDataWipe());
+    // Manually mount metadata so that we can call GetUpdateState() below.
+    MountMetadata();
+    EXPECT_EQ(new_sm->GetUpdateState(), UpdateState::None);
+    ASSERT_FALSE(test_device->IsSlotUnbootable(1));
+    ASSERT_FALSE(test_device->IsSlotUnbootable(0));
+
+    // Now reboot into new slot.
+    test_device = new TestDeviceInfo(fake_super, "_b");
+    auto init = SnapshotManager::NewForFirstStageMount(test_device);
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+    // Verify that we are on the downgraded build.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name)) << name;
+    }
+}
+
+TEST_F(SnapshotUpdateTest, Hashtree) {
+    constexpr auto partition_size = 4_MiB;
+    constexpr auto data_size = 3_MiB;
+    constexpr auto hashtree_size = 512_KiB;
+    constexpr auto fec_size = partition_size - data_size - hashtree_size;
+
+    const auto block_size = manifest_.block_size();
+    SetSize(sys_, partition_size);
+    AddOperation(sys_, data_size);
+
+    // Set hastree extents.
+    sys_->mutable_hash_tree_data_extent()->set_start_block(0);
+    sys_->mutable_hash_tree_data_extent()->set_num_blocks(data_size / block_size);
+
+    sys_->mutable_hash_tree_extent()->set_start_block(data_size / block_size);
+    sys_->mutable_hash_tree_extent()->set_num_blocks(hashtree_size / block_size);
+
+    // Set FEC extents.
+    sys_->mutable_fec_data_extent()->set_start_block(0);
+    sys_->mutable_fec_data_extent()->set_num_blocks((data_size + hashtree_size) / block_size);
+
+    sys_->mutable_fec_extent()->set_start_block((data_size + hashtree_size) / block_size);
+    sys_->mutable_fec_extent()->set_num_blocks(fec_size / block_size);
+
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Map and write some data to target partition.
+    ASSERT_TRUE(MapUpdateSnapshots({"vnd_b", "prd_b"}));
+    ASSERT_TRUE(WriteSnapshotAndHash("sys_b", partition_size));
+
+    // Finish update.
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    // After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(new TestDeviceInfo(fake_super, "_b"));
+    ASSERT_NE(init, nullptr);
+    ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // Check that the target partition have the same content. Hashtree and FEC extents
+    // should be accounted for.
+    ASSERT_TRUE(IsPartitionUnchanged("sys_b"));
+}
+
+// Test for overflow bit after update
+TEST_F(SnapshotUpdateTest, Overflow) {
+    const auto actual_write_size = GetSize(sys_);
+    const auto declared_write_size = actual_write_size - 1_MiB;
+
+    AddOperation(sys_, declared_write_size);
+
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+
+    // Map and write some data to target partitions.
+    ASSERT_TRUE(MapUpdateSnapshots({"vnd_b", "prd_b"}));
+    ASSERT_TRUE(WriteSnapshotAndHash("sys_b", actual_write_size));
+
+    std::vector<android::dm::DeviceMapper::TargetInfo> table;
+    ASSERT_TRUE(DeviceMapper::Instance().GetTableStatus("sys_b", &table));
+    ASSERT_EQ(1u, table.size());
+    EXPECT_TRUE(table[0].IsOverflowSnapshot());
+
+    ASSERT_FALSE(sm->FinishedSnapshotWrites(false))
+            << "FinishedSnapshotWrites should detect overflow of CoW device.";
+}
+
+TEST_F(SnapshotUpdateTest, LowSpace) {
+    static constexpr auto kMaxFree = 10_MiB;
+    auto userdata = std::make_unique<LowSpaceUserdata>();
+    ASSERT_TRUE(userdata->Init(kMaxFree));
+
+    // Grow all partitions to 5_MiB, total 15_MiB. This requires 15 MiB of CoW space. After
+    // using the empty space in super (< 1 MiB), it uses at least 14 MiB of /userdata space.
+    constexpr uint64_t partition_size = 5_MiB;
+    SetSize(sys_, partition_size);
+    SetSize(vnd_, partition_size);
+    SetSize(prd_, partition_size);
+
+    AddOperationForPartitions();
+
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    auto res = sm->CreateUpdateSnapshots(manifest_);
+    ASSERT_FALSE(res);
+    ASSERT_EQ(Return::ErrorCode::NO_SPACE, res.error_code());
+    ASSERT_GE(res.required_size(), 14_MiB);
+    ASSERT_LT(res.required_size(), 15_MiB);
+}
+
+class FlashAfterUpdateTest : public SnapshotUpdateTest,
+                             public WithParamInterface<std::tuple<uint32_t, bool>> {
+  public:
+    AssertionResult InitiateMerge(const std::string& slot_suffix) {
+        auto sm = SnapshotManager::New(new TestDeviceInfo(fake_super, slot_suffix));
+        if (!sm->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_)) {
+            return AssertionFailure() << "Cannot CreateLogicalAndSnapshotPartitions";
+        }
+        if (!sm->InitiateMerge()) {
+            return AssertionFailure() << "Cannot initiate merge";
+        }
+        return AssertionSuccess();
+    }
+};
+
+TEST_P(FlashAfterUpdateTest, FlashSlotAfterUpdate) {
+    // OTA client blindly unmaps all partitions that are possibly mapped.
+    for (const auto& name : {"sys_b", "vnd_b", "prd_b"}) {
+        ASSERT_TRUE(sm->UnmapUpdateSnapshot(name));
+    }
+
+    // Execute the update.
+    ASSERT_TRUE(sm->BeginUpdate());
+    ASSERT_TRUE(sm->CreateUpdateSnapshots(manifest_));
+    ASSERT_TRUE(MapUpdateSnapshots());
+    ASSERT_TRUE(sm->FinishedSnapshotWrites(false));
+
+    // Simulate shutting down the device.
+    ASSERT_TRUE(UnmapAll());
+
+    bool after_merge = std::get<1>(GetParam());
+    if (after_merge) {
+        ASSERT_TRUE(InitiateMerge("_b"));
+        // Simulate shutting down the device after merge has initiated.
+        ASSERT_TRUE(UnmapAll());
+    }
+
+    auto flashed_slot = std::get<0>(GetParam());
+    auto flashed_slot_suffix = SlotSuffixForSlotNumber(flashed_slot);
+
+    // Simulate flashing |flashed_slot|. This clears the UPDATED flag.
+    auto flashed_builder = MetadataBuilder::New(*opener_, "super", flashed_slot);
+    ASSERT_NE(flashed_builder, nullptr);
+    flashed_builder->RemoveGroupAndPartitions(group_->name() + flashed_slot_suffix);
+    flashed_builder->RemoveGroupAndPartitions(kCowGroupName);
+    ASSERT_TRUE(FillFakeMetadata(flashed_builder.get(), manifest_, flashed_slot_suffix));
+
+    // Deliberately remove a partition from this build so that
+    // InitiateMerge do not switch state to "merging". This is possible in
+    // practice because the list of dynamic partitions may change.
+    ASSERT_NE(nullptr, flashed_builder->FindPartition("prd" + flashed_slot_suffix));
+    flashed_builder->RemovePartition("prd" + flashed_slot_suffix);
+
+    // Note that fastbootd always updates the partition table of both slots.
+    auto flashed_metadata = flashed_builder->Export();
+    ASSERT_NE(nullptr, flashed_metadata);
+    ASSERT_TRUE(UpdatePartitionTable(*opener_, "super", *flashed_metadata, 0));
+    ASSERT_TRUE(UpdatePartitionTable(*opener_, "super", *flashed_metadata, 1));
+
+    std::string path;
+    for (const auto& name : {"sys", "vnd"}) {
+        ASSERT_TRUE(CreateLogicalPartition(
+                CreateLogicalPartitionParams{
+                        .block_device = fake_super,
+                        .metadata_slot = flashed_slot,
+                        .partition_name = name + flashed_slot_suffix,
+                        .timeout_ms = 1s,
+                        .partition_opener = opener_.get(),
+                },
+                &path));
+        ASSERT_TRUE(WriteRandomData(path));
+        auto hash = GetHash(path);
+        ASSERT_TRUE(hash.has_value());
+        hashes_[name + flashed_slot_suffix] = *hash;
+    }
+
+    // Simulate shutting down the device after flash.
+    ASSERT_TRUE(UnmapAll());
+
+    // Simulate reboot. After reboot, init does first stage mount.
+    auto init = SnapshotManager::NewForFirstStageMount(
+            new TestDeviceInfo(fake_super, flashed_slot_suffix));
+    ASSERT_NE(init, nullptr);
+
+    if (flashed_slot && after_merge) {
+        ASSERT_TRUE(init->NeedSnapshotsInFirstStageMount());
+    }
+    ASSERT_TRUE(init->CreateLogicalAndSnapshotPartitions("super", snapshot_timeout_));
+
+    // Check that the target partitions have the same content.
+    for (const auto& name : {"sys", "vnd"}) {
+        ASSERT_TRUE(IsPartitionUnchanged(name + flashed_slot_suffix));
+    }
+
+    // There should be no snapshot to merge.
+    auto new_sm = SnapshotManager::New(new TestDeviceInfo(fake_super, flashed_slot_suffix));
+    // update_enigne calls ProcessUpdateState first -- should see Cancelled.
+    ASSERT_EQ(UpdateState::Cancelled, new_sm->ProcessUpdateState());
+
+    // Next OTA calls CancelUpdate no matter what.
+    ASSERT_TRUE(new_sm->CancelUpdate());
+}
+
+INSTANTIATE_TEST_SUITE_P(Snapshot, FlashAfterUpdateTest, Combine(Values(0, 1), Bool()),
+                         [](const TestParamInfo<FlashAfterUpdateTest::ParamType>& info) {
+                             return "Flash"s + (std::get<0>(info.param) ? "New"s : "Old"s) +
+                                    "Slot"s + (std::get<1>(info.param) ? "After"s : "Before"s) +
+                                    "Merge"s;
+                         });
+
+// Test behavior of ImageManager::Create on low space scenario. These tests assumes image manager
+// uses /data as backup device.
+class ImageManagerTest : public SnapshotTest, public WithParamInterface<uint64_t> {
+  protected:
+    void SetUp() override {
+        SKIP_IF_NON_VIRTUAL_AB();
+        SnapshotTest::SetUp();
+        userdata_ = std::make_unique<LowSpaceUserdata>();
+        ASSERT_TRUE(userdata_->Init(GetParam()));
+    }
+    void TearDown() override {
+        RETURN_IF_NON_VIRTUAL_AB();
+        return;  // BUG(149738928)
+
+        EXPECT_TRUE(!image_manager_->BackingImageExists(kImageName) ||
+                    image_manager_->DeleteBackingImage(kImageName));
+    }
+    static constexpr const char* kImageName = "my_image";
+    std::unique_ptr<LowSpaceUserdata> userdata_;
+};
+
+TEST_P(ImageManagerTest, CreateImageEnoughAvailSpace) {
+    if (userdata_->available_space() == 0) {
+        GTEST_SKIP() << "/data is full (" << userdata_->available_space()
+                     << " bytes available), skipping";
+    }
+    ASSERT_TRUE(image_manager_->CreateBackingImage(kImageName, userdata_->available_space(),
+                                                   IImageManager::CREATE_IMAGE_DEFAULT))
+            << "Should be able to create image with size = " << userdata_->available_space()
+            << " bytes";
+    ASSERT_TRUE(image_manager_->DeleteBackingImage(kImageName))
+            << "Should be able to delete created image";
+}
+
+TEST_P(ImageManagerTest, CreateImageNoSpace) {
+    uint64_t to_allocate = userdata_->free_space() + userdata_->bsize();
+    auto res = image_manager_->CreateBackingImage(kImageName, to_allocate,
+                                                  IImageManager::CREATE_IMAGE_DEFAULT);
+    ASSERT_FALSE(res) << "Should not be able to create image with size = " << to_allocate
+                      << " bytes because only " << userdata_->free_space() << " bytes are free";
+    ASSERT_EQ(FiemapStatus::ErrorCode::NO_SPACE, res.error_code()) << res.string();
+}
+
+std::vector<uint64_t> ImageManagerTestParams() {
+    std::vector<uint64_t> ret;
+    for (uint64_t size = 1_MiB; size <= 512_MiB; size *= 2) {
+        ret.push_back(size);
+    }
+    return ret;
+}
+
+INSTANTIATE_TEST_SUITE_P(ImageManagerTest, ImageManagerTest, ValuesIn(ImageManagerTestParams()));
+
+bool Mkdir(const std::string& path) {
+    if (mkdir(path.c_str(), 0700) && errno != EEXIST) {
+        std::cerr << "Could not mkdir " << path << ": " << strerror(errno) << std::endl;
+        return false;
+    }
+    return true;
+}
+
+class SnapshotTestEnvironment : public ::testing::Environment {
+  public:
+    ~SnapshotTestEnvironment() override {}
+    void SetUp() override;
+    void TearDown() override;
+
+  private:
+    std::unique_ptr<IImageManager> super_images_;
+};
+
+void SnapshotTestEnvironment::SetUp() {
+    // b/163082876: GTEST_SKIP in Environment will make atest report incorrect results. Until
+    // that is fixed, don't call GTEST_SKIP here, but instead call GTEST_SKIP in individual test
+    // suites.
+    RETURN_IF_NON_VIRTUAL_AB_MSG("Virtual A/B is not enabled, skipping global setup.\n");
+
+    std::vector<std::string> paths = {
+            // clang-format off
+            "/data/gsi/ota/test",
+            "/data/gsi/ota/test/super",
+            "/metadata/gsi/ota/test",
+            "/metadata/gsi/ota/test/super",
+            "/metadata/ota/test",
+            "/metadata/ota/test/snapshots",
+            // clang-format on
+    };
+    for (const auto& path : paths) {
+        ASSERT_TRUE(Mkdir(path));
+    }
+
+    // Create this once, otherwise, gsid will start/stop between each test.
+    test_device = new TestDeviceInfo();
+    sm = SnapshotManager::New(test_device);
+    ASSERT_NE(nullptr, sm) << "Could not create snapshot manager";
+
+    // Clean up previous run.
+    MetadataMountedTest().TearDown();
+    SnapshotUpdateTest().Cleanup();
+    SnapshotTest().Cleanup();
+
+    // Use a separate image manager for our fake super partition.
+    super_images_ = IImageManager::Open("ota/test/super", 10s);
+    ASSERT_NE(nullptr, super_images_) << "Could not create image manager";
+
+    // Clean up any old copy.
+    DeleteBackingImage(super_images_.get(), "fake-super");
+
+    // Create and map the fake super partition.
+    static constexpr int kImageFlags =
+            IImageManager::CREATE_IMAGE_DEFAULT | IImageManager::CREATE_IMAGE_ZERO_FILL;
+    ASSERT_TRUE(super_images_->CreateBackingImage("fake-super", kSuperSize, kImageFlags))
+            << "Could not create fake super partition";
+
+    ASSERT_TRUE(super_images_->MapImageDevice("fake-super", 10s, &fake_super))
+            << "Could not map fake super partition";
+    test_device->set_fake_super(fake_super);
+}
+
+void SnapshotTestEnvironment::TearDown() {
+    RETURN_IF_NON_VIRTUAL_AB();
+    if (super_images_ != nullptr) {
+        DeleteBackingImage(super_images_.get(), "fake-super");
+    }
+}
+
+}  // namespace snapshot
+}  // namespace android
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(new ::android::snapshot::SnapshotTestEnvironment());
+    return RUN_ALL_TESTS();
+}
diff --git a/fs_mgr/libsnapshot/snapshotctl.cpp b/fs_mgr/libsnapshot/snapshotctl.cpp
new file mode 100644
index 0000000..a44de84
--- /dev/null
+++ b/fs_mgr/libsnapshot/snapshotctl.cpp
@@ -0,0 +1,80 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <sysexits.h>
+
+#include <chrono>
+#include <iostream>
+#include <map>
+#include <sstream>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+#include <libsnapshot/snapshot.h>
+
+using namespace std::string_literals;
+
+int Usage() {
+    std::cerr << "snapshotctl: Control snapshots.\n"
+                 "Usage: snapshotctl [action] [flags]\n"
+                 "Actions:\n"
+                 "  dump\n"
+                 "    Print snapshot states.\n"
+                 "  merge\n"
+                 "    Deprecated.\n";
+    return EX_USAGE;
+}
+
+namespace android {
+namespace snapshot {
+
+bool DumpCmdHandler(int /*argc*/, char** argv) {
+    android::base::InitLogging(argv, &android::base::StderrLogger);
+    return SnapshotManager::New()->Dump(std::cout);
+}
+
+bool MergeCmdHandler(int /*argc*/, char** argv) {
+    android::base::InitLogging(argv, &android::base::StderrLogger);
+    LOG(WARNING) << "Deprecated. Call update_engine_client --merge instead.";
+    return false;
+}
+
+static std::map<std::string, std::function<bool(int, char**)>> kCmdMap = {
+        // clang-format off
+        {"dump", DumpCmdHandler},
+        {"merge", MergeCmdHandler},
+        // clang-format on
+};
+
+}  // namespace snapshot
+}  // namespace android
+
+int main(int argc, char** argv) {
+    using namespace android::snapshot;
+    if (argc < 2) {
+        return Usage();
+    }
+
+    for (const auto& cmd : kCmdMap) {
+        if (cmd.first == argv[1]) {
+            return cmd.second(argc, argv) ? EX_OK : EX_SOFTWARE;
+        }
+    }
+
+    return Usage();
+}
diff --git a/fs_mgr/libsnapshot/test_helpers.cpp b/fs_mgr/libsnapshot/test_helpers.cpp
new file mode 100644
index 0000000..b07bf91
--- /dev/null
+++ b/fs_mgr/libsnapshot/test_helpers.cpp
@@ -0,0 +1,250 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <libsnapshot/test_helpers.h>
+
+#include <sys/statvfs.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <gtest/gtest.h>
+#include <openssl/sha.h>
+
+namespace android {
+namespace snapshot {
+
+using android::base::ReadFully;
+using android::base::unique_fd;
+using android::base::WriteFully;
+using android::fiemap::IImageManager;
+using testing::AssertionFailure;
+using testing::AssertionSuccess;
+
+void DeleteBackingImage(IImageManager* manager, const std::string& name) {
+    if (manager->IsImageMapped(name)) {
+        ASSERT_TRUE(manager->UnmapImageDevice(name));
+    }
+    if (manager->BackingImageExists(name)) {
+        ASSERT_TRUE(manager->DeleteBackingImage(name));
+    }
+}
+
+android::base::unique_fd TestPartitionOpener::Open(const std::string& partition_name,
+                                                   int flags) const {
+    if (partition_name == "super") {
+        return PartitionOpener::Open(fake_super_path_, flags);
+    }
+    return PartitionOpener::Open(partition_name, flags);
+}
+
+bool TestPartitionOpener::GetInfo(const std::string& partition_name,
+                                  android::fs_mgr::BlockDeviceInfo* info) const {
+    if (partition_name != "super") {
+        return PartitionOpener::GetInfo(partition_name, info);
+    }
+
+    if (PartitionOpener::GetInfo(fake_super_path_, info)) {
+        // SnapshotUpdateTest uses a relatively small super partition, which requires a small
+        // alignment and 0 offset to work. For the purpose of this test, hardcode the alignment
+        // and offset. This test isn't about testing liblp or libdm.
+        info->alignment_offset = 0;
+        info->alignment = std::min<uint32_t>(info->alignment, static_cast<uint32_t>(128_KiB));
+        return true;
+    }
+    return false;
+}
+
+std::string TestPartitionOpener::GetDeviceString(const std::string& partition_name) const {
+    if (partition_name == "super") {
+        return fake_super_path_;
+    }
+    return PartitionOpener::GetDeviceString(partition_name);
+}
+
+std::string ToHexString(const uint8_t* buf, size_t len) {
+    char lookup[] = "0123456789abcdef";
+    std::string out(len * 2 + 1, '\0');
+    char* outp = out.data();
+    for (; len > 0; len--, buf++) {
+        *outp++ = (char)lookup[*buf >> 4];
+        *outp++ = (char)lookup[*buf & 0xf];
+    }
+    return out;
+}
+
+bool WriteRandomData(const std::string& path, std::optional<size_t> expect_size,
+                     std::string* hash) {
+    unique_fd rand(open("/dev/urandom", O_RDONLY));
+    unique_fd fd(open(path.c_str(), O_WRONLY));
+
+    SHA256_CTX ctx;
+    if (hash) {
+        SHA256_Init(&ctx);
+    }
+
+    char buf[4096];
+    size_t total_written = 0;
+    while (!expect_size || total_written < *expect_size) {
+        ssize_t n = TEMP_FAILURE_RETRY(read(rand.get(), buf, sizeof(buf)));
+        if (n <= 0) return false;
+        if (!WriteFully(fd.get(), buf, n)) {
+            if (errno == ENOSPC) {
+                break;
+            }
+            PLOG(ERROR) << "Cannot write " << path;
+            return false;
+        }
+        total_written += n;
+        if (hash) {
+            SHA256_Update(&ctx, buf, n);
+        }
+    }
+
+    if (expect_size && total_written != *expect_size) {
+        PLOG(ERROR) << "Written " << total_written << " bytes, expected " << *expect_size;
+        return false;
+    }
+
+    if (hash) {
+        uint8_t out[32];
+        SHA256_Final(out, &ctx);
+        *hash = ToHexString(out, sizeof(out));
+    }
+    return true;
+}
+
+std::optional<std::string> GetHash(const std::string& path) {
+    std::string content;
+    if (!android::base::ReadFileToString(path, &content, true)) {
+        PLOG(ERROR) << "Cannot access " << path;
+        return std::nullopt;
+    }
+    SHA256_CTX ctx;
+    SHA256_Init(&ctx);
+    SHA256_Update(&ctx, content.c_str(), content.size());
+    uint8_t out[32];
+    SHA256_Final(out, &ctx);
+    return ToHexString(out, sizeof(out));
+}
+
+AssertionResult FillFakeMetadata(MetadataBuilder* builder, const DeltaArchiveManifest& manifest,
+                                 const std::string& suffix) {
+    for (const auto& group : manifest.dynamic_partition_metadata().groups()) {
+        if (!builder->AddGroup(group.name() + suffix, group.size())) {
+            return AssertionFailure()
+                   << "Cannot add group " << group.name() << " with size " << group.size();
+        }
+        for (const auto& partition_name : group.partition_names()) {
+            auto p = builder->AddPartition(partition_name + suffix, group.name() + suffix,
+                                           0 /* attr */);
+            if (!p) {
+                return AssertionFailure() << "Cannot add partition " << partition_name + suffix
+                                          << " to group " << group.name() << suffix;
+            }
+        }
+    }
+    for (const auto& partition : manifest.partitions()) {
+        auto p = builder->FindPartition(partition.partition_name() + suffix);
+        if (!p) {
+            return AssertionFailure() << "Cannot resize partition " << partition.partition_name()
+                                      << suffix << "; it is not found.";
+        }
+        if (!builder->ResizePartition(p, partition.new_partition_info().size())) {
+            return AssertionFailure()
+                   << "Cannot resize partition " << partition.partition_name() << suffix
+                   << " to size " << partition.new_partition_info().size();
+        }
+    }
+    return AssertionSuccess();
+}
+
+void SetSize(PartitionUpdate* partition_update, uint64_t size) {
+    partition_update->mutable_new_partition_info()->set_size(size);
+}
+
+uint64_t GetSize(PartitionUpdate* partition_update) {
+    return partition_update->mutable_new_partition_info()->size();
+}
+
+AssertionResult LowSpaceUserdata::Init(uint64_t max_free_space) {
+    auto res = ReadUserdataStats();
+    if (!res) return res;
+
+    // Try to fill up the disk as much as possible until free_space_ <= max_free_space.
+    big_file_ = std::make_unique<TemporaryFile>();
+    if (big_file_->fd == -1) {
+        return AssertionFailure() << strerror(errno);
+    }
+    if (!android::base::StartsWith(big_file_->path, kUserDataDevice)) {
+        return AssertionFailure() << "Temp file allocated to " << big_file_->path << ", not in "
+                                  << kUserDataDevice;
+    }
+    uint64_t next_consume =
+            std::min(free_space_ - max_free_space, (uint64_t)std::numeric_limits<off_t>::max());
+    off_t allocated = 0;
+    while (next_consume > 0 && free_space_ > max_free_space) {
+        int status = fallocate(big_file_->fd, 0, allocated, next_consume);
+        if (status == -1 && errno == ENOSPC) {
+            next_consume /= 2;
+            continue;
+        }
+        if (status == -1) {
+            return AssertionFailure() << strerror(errno);
+        }
+        allocated += next_consume;
+
+        res = ReadUserdataStats();
+        if (!res) return res;
+    }
+
+    LOG(INFO) << allocated << " bytes allocated to " << big_file_->path;
+    initialized_ = true;
+    return AssertionSuccess();
+}
+
+AssertionResult LowSpaceUserdata::ReadUserdataStats() {
+    struct statvfs buf;
+    if (statvfs(kUserDataDevice, &buf) == -1) {
+        return AssertionFailure() << strerror(errno);
+    }
+    bsize_ = buf.f_bsize;
+    free_space_ = bsize_ * buf.f_bfree;
+    available_space_ = bsize_ * buf.f_bavail;
+    return AssertionSuccess();
+}
+
+uint64_t LowSpaceUserdata::free_space() const {
+    CHECK(initialized_);
+    return free_space_;
+}
+
+uint64_t LowSpaceUserdata::available_space() const {
+    CHECK(initialized_);
+    return available_space_;
+}
+
+uint64_t LowSpaceUserdata::bsize() const {
+    CHECK(initialized_);
+    return bsize_;
+}
+
+bool IsVirtualAbEnabled() {
+    return android::base::GetBoolProperty("ro.virtual_ab.enabled", false);
+}
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/utility.cpp b/fs_mgr/libsnapshot/utility.cpp
new file mode 100644
index 0000000..d32b61e
--- /dev/null
+++ b/fs_mgr/libsnapshot/utility.cpp
@@ -0,0 +1,186 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "utility.h"
+
+#include <errno.h>
+#include <time.h>
+
+#include <iomanip>
+#include <sstream>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <fs_mgr/roots.h>
+
+using android::dm::kSectorSize;
+using android::fiemap::FiemapStatus;
+using android::fs_mgr::EnsurePathMounted;
+using android::fs_mgr::EnsurePathUnmounted;
+using android::fs_mgr::Fstab;
+using android::fs_mgr::GetEntryForPath;
+using android::fs_mgr::MetadataBuilder;
+using android::fs_mgr::Partition;
+using android::fs_mgr::ReadDefaultFstab;
+using google::protobuf::RepeatedPtrField;
+
+namespace android {
+namespace snapshot {
+
+void AutoDevice::Release() {
+    name_.clear();
+}
+
+AutoDeviceList::~AutoDeviceList() {
+    // Destroy devices in the reverse order because newer devices may have dependencies
+    // on older devices.
+    for (auto it = devices_.rbegin(); it != devices_.rend(); ++it) {
+        it->reset();
+    }
+}
+
+void AutoDeviceList::Release() {
+    for (auto&& p : devices_) {
+        p->Release();
+    }
+}
+
+AutoUnmapDevice::~AutoUnmapDevice() {
+    if (name_.empty()) return;
+    if (!dm_->DeleteDeviceIfExists(name_)) {
+        LOG(ERROR) << "Failed to auto unmap device " << name_;
+    }
+}
+
+AutoUnmapImage::~AutoUnmapImage() {
+    if (name_.empty()) return;
+    if (!images_->UnmapImageIfExists(name_)) {
+        LOG(ERROR) << "Failed to auto unmap cow image " << name_;
+    }
+}
+
+std::vector<Partition*> ListPartitionsWithSuffix(MetadataBuilder* builder,
+                                                 const std::string& suffix) {
+    std::vector<Partition*> ret;
+    for (const auto& group : builder->ListGroups()) {
+        for (auto* partition : builder->ListPartitionsInGroup(group)) {
+            if (!base::EndsWith(partition->name(), suffix)) {
+                continue;
+            }
+            ret.push_back(partition);
+        }
+    }
+    return ret;
+}
+
+AutoDeleteSnapshot::~AutoDeleteSnapshot() {
+    if (!name_.empty() && !manager_->DeleteSnapshot(lock_, name_)) {
+        LOG(ERROR) << "Failed to auto delete snapshot " << name_;
+    }
+}
+
+Return InitializeCow(const std::string& device) {
+    // When the kernel creates a persistent dm-snapshot, it requires a CoW file
+    // to store the modifications. The kernel interface does not specify how
+    // the CoW is used, and there is no standard associated.
+    // By looking at the current implementation, the CoW file is treated as:
+    // - a _NEW_ snapshot if its first 32 bits are zero, so the newly created
+    // dm-snapshot device will look like a perfect copy of the origin device;
+    // - an _EXISTING_ snapshot if the first 32 bits are equal to a
+    // kernel-specified magic number and the CoW file metadata is set as valid,
+    // so it can be used to resume the last state of a snapshot device;
+    // - an _INVALID_ snapshot otherwise.
+    // To avoid zero-filling the whole CoW file when a new dm-snapshot is
+    // created, here we zero-fill only the first chunk to be compliant with
+    // lvm.
+    constexpr ssize_t kDmSnapZeroFillSize = kSectorSize * kSnapshotChunkSize;
+
+    std::vector<uint8_t> zeros(kDmSnapZeroFillSize, 0);
+    android::base::unique_fd fd(open(device.c_str(), O_WRONLY | O_BINARY));
+    if (fd < 0) {
+        PLOG(ERROR) << "Can't open COW device: " << device;
+        return Return(FiemapStatus::FromErrno(errno));
+    }
+
+    LOG(INFO) << "Zero-filling COW device: " << device;
+    if (!android::base::WriteFully(fd, zeros.data(), kDmSnapZeroFillSize)) {
+        PLOG(ERROR) << "Can't zero-fill COW device for " << device;
+        return Return(FiemapStatus::FromErrno(errno));
+    }
+    return Return::Ok();
+}
+
+std::unique_ptr<AutoUnmountDevice> AutoUnmountDevice::New(const std::string& path) {
+    Fstab fstab;
+    if (!ReadDefaultFstab(&fstab)) {
+        LOG(ERROR) << "Cannot read default fstab";
+        return nullptr;
+    }
+
+    if (GetEntryForPath(&fstab, path) == nullptr) {
+        LOG(INFO) << "EnsureMetadataMounted can't find entry for " << path << ", skipping";
+        return std::unique_ptr<AutoUnmountDevice>(new AutoUnmountDevice("", {}));
+    }
+
+    if (!EnsurePathMounted(&fstab, path)) {
+        LOG(ERROR) << "Cannot mount " << path;
+        return nullptr;
+    }
+    return std::unique_ptr<AutoUnmountDevice>(new AutoUnmountDevice(path, std::move(fstab)));
+}
+
+AutoUnmountDevice::~AutoUnmountDevice() {
+    if (name_.empty()) return;
+    if (!EnsurePathUnmounted(&fstab_, name_)) {
+        LOG(ERROR) << "Cannot unmount " << name_;
+    }
+}
+
+bool WriteStringToFileAtomic(const std::string& content, const std::string& path) {
+    std::string tmp_path = path + ".tmp";
+    if (!android::base::WriteStringToFile(content, tmp_path)) {
+        return false;
+    }
+    if (rename(tmp_path.c_str(), path.c_str()) == -1) {
+        PLOG(ERROR) << "rename failed from " << tmp_path << " to " << path;
+        return false;
+    }
+    return true;
+}
+
+std::ostream& operator<<(std::ostream& os, const Now&) {
+    struct tm now;
+    time_t t = time(nullptr);
+    localtime_r(&t, &now);
+    return os << std::put_time(&now, "%Y%m%d-%H%M%S");
+}
+
+void AppendExtent(RepeatedPtrField<chromeos_update_engine::Extent>* extents, uint64_t start_block,
+                  uint64_t num_blocks) {
+    if (extents->size() > 0) {
+        auto last_extent = extents->rbegin();
+        auto next_block = last_extent->start_block() + last_extent->num_blocks();
+        if (start_block == next_block) {
+            last_extent->set_num_blocks(last_extent->num_blocks() + num_blocks);
+            return;
+        }
+    }
+    auto* new_extent = extents->Add();
+    new_extent->set_start_block(start_block);
+    new_extent->set_num_blocks(num_blocks);
+}
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libsnapshot/utility.h b/fs_mgr/libsnapshot/utility.h
new file mode 100644
index 0000000..e69bdad
--- /dev/null
+++ b/fs_mgr/libsnapshot/utility.h
@@ -0,0 +1,133 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <functional>
+#include <iostream>
+#include <string>
+
+#include <android-base/macros.h>
+#include <fstab/fstab.h>
+#include <libdm/dm.h>
+#include <libfiemap/image_manager.h>
+#include <liblp/builder.h>
+#include <libsnapshot/snapshot.h>
+#include <update_engine/update_metadata.pb.h>
+
+#include <libsnapshot/auto_device.h>
+#include <libsnapshot/snapshot.h>
+
+namespace android {
+namespace snapshot {
+
+// Unit is sectors, this is a 4K chunk.
+static constexpr uint32_t kSnapshotChunkSize = 8;
+
+// A list of devices we created along the way.
+// - Whenever a device is created that is subject to GC'ed at the end of
+//   this function, add it to this list.
+// - If any error has occurred, the list is destroyed, and all these devices
+//   are cleaned up.
+// - Upon success, Release() should be called so that the created devices
+//   are kept.
+struct AutoDeviceList {
+    ~AutoDeviceList();
+    template <typename T, typename... Args>
+    void EmplaceBack(Args&&... args) {
+        devices_.emplace_back(std::make_unique<T>(std::forward<Args>(args)...));
+    }
+    void Release();
+
+  private:
+    std::vector<std::unique_ptr<AutoDevice>> devices_;
+};
+
+// Automatically unmap a device upon deletion.
+struct AutoUnmapDevice : AutoDevice {
+    // On destruct, delete |name| from device mapper.
+    AutoUnmapDevice(android::dm::DeviceMapper* dm, const std::string& name)
+        : AutoDevice(name), dm_(dm) {}
+    AutoUnmapDevice(AutoUnmapDevice&& other) = default;
+    ~AutoUnmapDevice();
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(AutoUnmapDevice);
+    android::dm::DeviceMapper* dm_ = nullptr;
+};
+
+// Automatically unmap an image upon deletion.
+struct AutoUnmapImage : AutoDevice {
+    // On destruct, delete |name| from image manager.
+    AutoUnmapImage(android::fiemap::IImageManager* images, const std::string& name)
+        : AutoDevice(name), images_(images) {}
+    AutoUnmapImage(AutoUnmapImage&& other) = default;
+    ~AutoUnmapImage();
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(AutoUnmapImage);
+    android::fiemap::IImageManager* images_ = nullptr;
+};
+
+// Automatically deletes a snapshot. |name| should be the name of the partition, e.g. "system_a".
+// Client is responsible for maintaining the lifetime of |manager| and |lock|.
+struct AutoDeleteSnapshot : AutoDevice {
+    AutoDeleteSnapshot(SnapshotManager* manager, SnapshotManager::LockedFile* lock,
+                       const std::string& name)
+        : AutoDevice(name), manager_(manager), lock_(lock) {}
+    AutoDeleteSnapshot(AutoDeleteSnapshot&& other);
+    ~AutoDeleteSnapshot();
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(AutoDeleteSnapshot);
+    SnapshotManager* manager_ = nullptr;
+    SnapshotManager::LockedFile* lock_ = nullptr;
+};
+
+struct AutoUnmountDevice : AutoDevice {
+    // Empty object that does nothing.
+    AutoUnmountDevice() : AutoDevice("") {}
+    static std::unique_ptr<AutoUnmountDevice> New(const std::string& path);
+    ~AutoUnmountDevice();
+
+  private:
+    AutoUnmountDevice(const std::string& path, android::fs_mgr::Fstab&& fstab)
+        : AutoDevice(path), fstab_(std::move(fstab)) {}
+    android::fs_mgr::Fstab fstab_;
+};
+
+// Return a list of partitions in |builder| with the name ending in |suffix|.
+std::vector<android::fs_mgr::Partition*> ListPartitionsWithSuffix(
+        android::fs_mgr::MetadataBuilder* builder, const std::string& suffix);
+
+// Initialize a device before using it as the COW device for a dm-snapshot device.
+Return InitializeCow(const std::string& device);
+
+// "Atomically" write string to file. This is done by a series of actions:
+// 1. Write to path + ".tmp"
+// 2. Move temporary file to path using rename()
+// Note that rename() is an atomic operation. This function may not work properly if there
+// is an open fd to |path|, because that fd has an old view of the file.
+bool WriteStringToFileAtomic(const std::string& content, const std::string& path);
+
+// Writes current time to a given stream.
+struct Now {};
+std::ostream& operator<<(std::ostream& os, const Now&);
+
+// Append to |extents|. Merged into the last element if possible.
+void AppendExtent(google::protobuf::RepeatedPtrField<chromeos_update_engine::Extent>* extents,
+                  uint64_t start_block, uint64_t num_blocks);
+
+}  // namespace snapshot
+}  // namespace android
diff --git a/fs_mgr/libstorage_literals/Android.bp b/fs_mgr/libstorage_literals/Android.bp
new file mode 100644
index 0000000..beb18ef
--- /dev/null
+++ b/fs_mgr/libstorage_literals/Android.bp
@@ -0,0 +1,7 @@
+
+cc_library_headers {
+    name: "libstorage_literals_headers",
+    host_supported: true,
+    recovery_available: true,
+    export_include_dirs: ["."],
+}
diff --git a/fs_mgr/libstorage_literals/storage_literals/storage_literals.h b/fs_mgr/libstorage_literals/storage_literals/storage_literals.h
new file mode 100644
index 0000000..ac0dfbd
--- /dev/null
+++ b/fs_mgr/libstorage_literals/storage_literals/storage_literals.h
@@ -0,0 +1,77 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <stdint.h>
+#include <stdlib.h>
+
+namespace android {
+namespace storage_literals {
+
+template <size_t Power>
+struct Size {
+    static constexpr size_t power = Power;
+    explicit constexpr Size(uint64_t count) : value_(count) {}
+
+    constexpr uint64_t bytes() const { return value_ << power; }
+    constexpr uint64_t count() const { return value_; }
+    constexpr operator uint64_t() const { return bytes(); }
+
+  private:
+    uint64_t value_;
+};
+
+using B = Size<0>;
+using KiB = Size<10>;
+using MiB = Size<20>;
+using GiB = Size<30>;
+
+constexpr B operator""_B(unsigned long long v) {  // NOLINT
+    return B{v};
+}
+
+constexpr KiB operator""_KiB(unsigned long long v) {  // NOLINT
+    return KiB{v};
+}
+
+constexpr MiB operator""_MiB(unsigned long long v) {  // NOLINT
+    return MiB{v};
+}
+
+constexpr GiB operator""_GiB(unsigned long long v) {  // NOLINT
+    return GiB{v};
+}
+
+template <typename Dest, typename Src>
+constexpr Dest size_cast(Src src) {
+    if (Src::power < Dest::power) {
+        return Dest(src.count() >> (Dest::power - Src::power));
+    }
+    if (Src::power > Dest::power) {
+        return Dest(src.count() << (Src::power - Dest::power));
+    }
+    return Dest(src.count());
+}
+
+static_assert(1_B == 1);
+static_assert(1_KiB == 1 << 10);
+static_assert(1_MiB == 1 << 20);
+static_assert(1_GiB == 1 << 30);
+static_assert(size_cast<KiB>(1_B).count() == 0);
+static_assert(size_cast<KiB>(1024_B).count() == 1);
+static_assert(size_cast<KiB>(1_MiB).count() == 1024);
+
+}  // namespace storage_literals
+}  // namespace android
diff --git a/fs_mgr/libvbmeta/Android.bp b/fs_mgr/libvbmeta/Android.bp
new file mode 100644
index 0000000..bceabab
--- /dev/null
+++ b/fs_mgr/libvbmeta/Android.bp
@@ -0,0 +1,53 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+libvbmeta_lib_deps = [
+    "libbase",
+    "libcrypto",
+]
+
+cc_library {
+    name: "libvbmeta",
+    host_supported: true,
+    srcs: [
+        "builder.cpp",
+        "reader.cpp",
+        "utility.cpp",
+        "writer.cpp",
+    ],
+    shared_libs: [
+        "liblog",
+    ] + libvbmeta_lib_deps,
+    export_include_dirs: ["include"],
+}
+
+cc_test_host {
+    name: "libvbmeta_test",
+    static_libs: [
+        "liblog",
+        "libsparse",
+        "libvbmeta",
+        "libz",
+    ] + libvbmeta_lib_deps,
+    srcs: [
+        "builder_test.cpp",
+        "super_vbmeta_test.cpp",
+    ],
+    required: [
+        "avbtool",
+        "vbmake",
+    ],
+}
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/builder.cpp b/fs_mgr/libvbmeta/builder.cpp
new file mode 100644
index 0000000..e6576ce
--- /dev/null
+++ b/fs_mgr/libvbmeta/builder.cpp
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "builder.h"
+
+#include <android-base/file.h>
+#include <openssl/sha.h>
+
+#include "reader.h"
+#include "utility.h"
+#include "writer.h"
+
+using android::base::ErrnoError;
+using android::base::Error;
+using android::base::Result;
+using android::base::unique_fd;
+
+namespace android {
+namespace fs_mgr {
+
+SuperVBMetaBuilder::SuperVBMetaBuilder() {}
+
+SuperVBMetaBuilder::SuperVBMetaBuilder(const int super_vbmeta_fd,
+                                       const std::map<std::string, std::string>& images_path)
+    : super_vbmeta_fd_(super_vbmeta_fd), images_path_(images_path) {}
+
+Result<void> SuperVBMetaBuilder::Build() {
+    for (const auto& [vbmeta_name, file_path] : images_path_) {
+        Result<std::string> content = ReadVBMetaImageFromFile(file_path);
+        if (!content.ok()) {
+            return content.error();
+        }
+
+        Result<uint8_t> vbmeta_index = AddVBMetaImage(vbmeta_name);
+        if (!vbmeta_index.ok()) {
+            return vbmeta_index.error();
+        }
+
+        Result<void> rv_export_vbmeta_image =
+                ExportVBMetaImageToFile(vbmeta_index.value(), content.value());
+        if (!rv_export_vbmeta_image.ok()) {
+            return rv_export_vbmeta_image;
+        }
+    }
+    return {};
+}
+
+Result<std::string> SuperVBMetaBuilder::ReadVBMetaImageFromFile(const std::string& file) {
+    unique_fd source_fd(TEMP_FAILURE_RETRY(open(file.c_str(), O_RDONLY | O_CLOEXEC)));
+    if (source_fd < 0) {
+        return ErrnoError() << "Couldn't open vbmeta image file " << file;
+    }
+
+    Result<uint64_t> file_size = GetFileSize(source_fd);
+    if (!file_size.ok()) {
+        return file_size.error();
+    }
+
+    if (file_size.value() > VBMETA_IMAGE_MAX_SIZE) {
+        return Error() << "vbmeta image file size " << file_size.value() << " is too large";
+    }
+
+    std::unique_ptr<uint8_t[]> buffer = std::make_unique<uint8_t[]>(VBMETA_IMAGE_MAX_SIZE);
+    if (!android::base::ReadFully(source_fd, buffer.get(), file_size.value())) {
+        return ErrnoError() << "Couldn't read vbmeta image file " << file;
+    }
+
+    return std::string(reinterpret_cast<const char*>(buffer.get()), VBMETA_IMAGE_MAX_SIZE);
+}
+
+Result<uint8_t> SuperVBMetaBuilder::GetEmptySlot() {
+    for (uint8_t i = 0; i < VBMETA_IMAGE_MAX_NUM; ++i) {
+        if ((table_.header.in_use & (1 << i)) == 0) return i;
+    }
+    return Error() << "There isn't empty slot in super vbmeta";
+}
+
+Result<uint8_t> SuperVBMetaBuilder::AddVBMetaImage(const std::string& vbmeta_name) {
+    auto desc = std::find_if(
+            table_.descriptors.begin(), table_.descriptors.end(),
+            [&vbmeta_name](const auto& entry) { return entry.vbmeta_name == vbmeta_name; });
+
+    uint8_t slot_number = 0;
+    if (desc != table_.descriptors.end()) {
+        slot_number = desc->vbmeta_index;
+    } else {
+        Result<uint8_t> new_slot = GetEmptySlot();
+        if (!new_slot.ok()) {
+            return new_slot;
+        }
+        slot_number = new_slot.value();
+
+        // insert new descriptor into table
+        InternalVBMetaDescriptor new_desc;
+        new_desc.vbmeta_index = slot_number;
+        new_desc.vbmeta_name_length = vbmeta_name.length();
+        new_desc.vbmeta_name = vbmeta_name;
+        memset(new_desc.reserved, 0, sizeof(new_desc.reserved));
+        table_.descriptors.emplace_back(std::move(new_desc));
+
+        // mark slot as in use
+        table_.header.in_use |= (1 << slot_number);
+    }
+
+    return slot_number;
+}
+
+void SuperVBMetaBuilder::DeleteVBMetaImage(const std::string& vbmeta_name) {
+    auto desc = std::find_if(
+            table_.descriptors.begin(), table_.descriptors.end(),
+            [&vbmeta_name](const auto& entry) { return entry.vbmeta_name == vbmeta_name; });
+
+    if (desc != table_.descriptors.end()) {
+        // mark slot as not in use
+        table_.header.in_use &= ~(1 << desc->vbmeta_index);
+
+        // erase descriptor in table
+        table_.descriptors.erase(desc);
+    }
+}
+
+std::unique_ptr<VBMetaTable> SuperVBMetaBuilder::ExportVBMetaTable() {
+    // calculate descriptors size
+    uint32_t descriptors_size = 0;
+    for (const auto& desc : table_.descriptors) {
+        descriptors_size += SUPER_VBMETA_DESCRIPTOR_SIZE + desc.vbmeta_name_length * sizeof(char);
+    }
+
+    // export header
+    table_.header.magic = SUPER_VBMETA_MAGIC;
+    table_.header.major_version = SUPER_VBMETA_MAJOR_VERSION;
+    table_.header.minor_version = SUPER_VBMETA_MINOR_VERSION;
+    table_.header.header_size = SUPER_VBMETA_HEADER_SIZE;
+    table_.header.total_size = SUPER_VBMETA_HEADER_SIZE + descriptors_size;
+    memset(table_.header.checksum, 0, sizeof(table_.header.checksum));
+    table_.header.descriptors_size = descriptors_size;
+    memset(table_.header.reserved, 0, sizeof(table_.header.reserved));
+    std::string serialized_table = SerializeVBMetaTable(table_);
+    ::SHA256(reinterpret_cast<const uint8_t*>(serialized_table.c_str()), table_.header.total_size,
+             &table_.header.checksum[0]);
+
+    return std::make_unique<VBMetaTable>(table_);
+}
+
+Result<void> SuperVBMetaBuilder::ExportVBMetaTableToFile() {
+    std::unique_ptr<VBMetaTable> table = ExportVBMetaTable();
+
+    std::string serialized_table = SerializeVBMetaTable(*table);
+
+    android::base::Result<void> rv_write_primary_vbmeta_table =
+            WritePrimaryVBMetaTable(super_vbmeta_fd_, serialized_table);
+    if (!rv_write_primary_vbmeta_table.ok()) {
+        return rv_write_primary_vbmeta_table;
+    }
+
+    android::base::Result<void> rv_write_backup_vbmeta_table =
+            WriteBackupVBMetaTable(super_vbmeta_fd_, serialized_table);
+    return rv_write_backup_vbmeta_table;
+}
+
+Result<void> SuperVBMetaBuilder::ExportVBMetaImageToFile(const uint8_t vbmeta_index,
+                                                         const std::string& vbmeta_image) {
+    Result<void> rv_write_vbmeta_image =
+            WriteVBMetaImage(super_vbmeta_fd_, vbmeta_index, vbmeta_image);
+    if (!rv_write_vbmeta_image.ok()) {
+        return rv_write_vbmeta_image;
+    }
+
+    Result<void> rv_validate_vbmeta_image =
+            ValidateVBMetaImage(super_vbmeta_fd_, vbmeta_index, vbmeta_image);
+    return rv_validate_vbmeta_image;
+}
+
+bool WriteToSuperVBMetaFile(const std::string& super_vbmeta_file,
+                            const std::map<std::string, std::string>& images_path) {
+    unique_fd super_vbmeta_fd(TEMP_FAILURE_RETRY(
+            open(super_vbmeta_file.c_str(), O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, 0644)));
+    if (super_vbmeta_fd < 0) {
+        PERROR << "Couldn't open super vbmeta file " << super_vbmeta_file;
+        return false;
+    }
+
+    SuperVBMetaBuilder builder(super_vbmeta_fd, images_path);
+
+    Result<void> rv_build = builder.Build();
+    if (!rv_build.ok()) {
+        LERROR << rv_build.error();
+        return false;
+    }
+
+    Result<void> rv_export = builder.ExportVBMetaTableToFile();
+    if (!rv_export.ok()) {
+        LERROR << rv_export.error();
+        return false;
+    }
+
+    return true;
+}
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/libvbmeta/builder.h b/fs_mgr/libvbmeta/builder.h
new file mode 100644
index 0000000..58ea36a
--- /dev/null
+++ b/fs_mgr/libvbmeta/builder.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <map>
+#include <string>
+
+#include <android-base/result.h>
+
+#include "super_vbmeta_format.h"
+
+namespace android {
+namespace fs_mgr {
+
+class SuperVBMetaBuilder {
+  public:
+    SuperVBMetaBuilder();
+    SuperVBMetaBuilder(const int super_vbmeta_fd,
+                       const std::map<std::string, std::string>& images_path);
+    android::base::Result<void> Build();
+    android::base::Result<std::string> ReadVBMetaImageFromFile(const std::string& file);
+    // It adds the vbmeta image in super_vbmeta and returns the index
+    // (which has the same meaning with vbmeta_index of VBMetaDescriptor).
+    android::base::Result<uint8_t> AddVBMetaImage(const std::string& vbmeta_name);
+    void DeleteVBMetaImage(const std::string& vbmeta_name);
+    std::unique_ptr<VBMetaTable> ExportVBMetaTable();
+    android::base::Result<void> ExportVBMetaTableToFile();
+    android::base::Result<void> ExportVBMetaImageToFile(const uint8_t vbmeta_index,
+                                                        const std::string& vbmeta_image);
+
+  private:
+    android::base::Result<uint8_t> GetEmptySlot();
+
+    int super_vbmeta_fd_;
+    VBMetaTable table_;
+    // Maps vbmeta image name to vbmeta image file path.
+    std::map<std::string, std::string> images_path_;
+};
+
+}  // namespace fs_mgr
+}  // namespace android
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/builder_test.cpp b/fs_mgr/libvbmeta/builder_test.cpp
new file mode 100644
index 0000000..487bece
--- /dev/null
+++ b/fs_mgr/libvbmeta/builder_test.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include "builder.h"
+#include "super_vbmeta_format.h"
+
+using android::base::Result;
+using android::fs_mgr::SuperVBMetaBuilder;
+
+TEST(BuilderTest, VBMetaTableBasic) {
+    std::unique_ptr<SuperVBMetaBuilder> builder = std::make_unique<SuperVBMetaBuilder>();
+    ASSERT_NE(builder, nullptr);
+
+    Result<uint8_t> vbmeta_index = builder->AddVBMetaImage("vbmeta" /* vbmeta_name */);
+    EXPECT_RESULT_OK(vbmeta_index);
+
+    Result<uint8_t> vbmeta_system_slot = builder->AddVBMetaImage("vbmeta_system" /* vbmeta_name */);
+    EXPECT_RESULT_OK(vbmeta_system_slot);
+
+    Result<uint8_t> vbmeta_vendor_slot = builder->AddVBMetaImage("vbmeta_vendor" /* vbmeta_name */);
+    EXPECT_RESULT_OK(vbmeta_vendor_slot);
+
+    builder->DeleteVBMetaImage("vbmeta_system" /* vbmeta_name */);
+
+    Result<uint8_t> vbmeta_product_slot =
+            builder->AddVBMetaImage("vbmeta_product" /* vbmeta_name */);
+    EXPECT_RESULT_OK(vbmeta_product_slot);
+
+    std::unique_ptr<VBMetaTable> table = builder->ExportVBMetaTable();
+    ASSERT_NE(table, nullptr);
+
+    // check for vbmeta table header
+    EXPECT_EQ(table->header.magic, SUPER_VBMETA_MAGIC);
+    EXPECT_EQ(table->header.major_version, SUPER_VBMETA_MAJOR_VERSION);
+    EXPECT_EQ(table->header.minor_version, SUPER_VBMETA_MINOR_VERSION);
+    EXPECT_EQ(table->header.header_size, SUPER_VBMETA_HEADER_SIZE);
+    EXPECT_EQ(table->header.total_size,
+              SUPER_VBMETA_HEADER_SIZE + SUPER_VBMETA_DESCRIPTOR_SIZE * 3 + 33);
+    EXPECT_EQ(table->header.descriptors_size, SUPER_VBMETA_DESCRIPTOR_SIZE * 3 + 33);
+
+    // Test for vbmeta table descriptors
+    EXPECT_EQ(table->descriptors.size(), 3);
+
+    EXPECT_EQ(table->descriptors[0].vbmeta_index, 0);
+    EXPECT_EQ(table->descriptors[0].vbmeta_name_length, 6);
+    for (int i = 0; i < sizeof(table->descriptors[0].reserved); i++)
+        EXPECT_EQ(table->descriptors[0].reserved[i], 0);
+    EXPECT_EQ(table->descriptors[0].vbmeta_name, "vbmeta");
+
+    EXPECT_EQ(table->descriptors[1].vbmeta_index, 2);
+    EXPECT_EQ(table->descriptors[1].vbmeta_name_length, 13);
+    for (int i = 0; i < sizeof(table->descriptors[1].reserved); i++)
+        EXPECT_EQ(table->descriptors[1].reserved[i], 0);
+    EXPECT_EQ(table->descriptors[1].vbmeta_name, "vbmeta_vendor");
+
+    EXPECT_EQ(table->descriptors[2].vbmeta_index, 1);
+    EXPECT_EQ(table->descriptors[2].vbmeta_name_length, 14);
+    for (int i = 0; i < sizeof(table->descriptors[2].reserved); i++)
+        EXPECT_EQ(table->descriptors[2].reserved[i], 0);
+    EXPECT_EQ(table->descriptors[2].vbmeta_name, "vbmeta_product");
+}
diff --git a/fs_mgr/libvbmeta/include/libvbmeta/libvbmeta.h b/fs_mgr/libvbmeta/include/libvbmeta/libvbmeta.h
new file mode 100644
index 0000000..ab7ba73
--- /dev/null
+++ b/fs_mgr/libvbmeta/include/libvbmeta/libvbmeta.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <map>
+#include <string>
+
+namespace android {
+namespace fs_mgr {
+
+bool WriteToSuperVBMetaFile(const std::string& super_vbmeta_file,
+                            const std::map<std::string, std::string>& images_path);
+
+}  // namespace fs_mgr
+}  // namespace android
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/reader.cpp b/fs_mgr/libvbmeta/reader.cpp
new file mode 100644
index 0000000..7b5ed93
--- /dev/null
+++ b/fs_mgr/libvbmeta/reader.cpp
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "reader.h"
+
+#include <android-base/file.h>
+
+using android::base::ErrnoError;
+using android::base::Error;
+using android::base::Result;
+
+namespace android {
+namespace fs_mgr {
+
+Result<void> LoadAndVerifySuperVBMetaHeader(const void* buffer, SuperVBMetaHeader* header) {
+    memcpy(header, buffer, sizeof(*header));
+
+    // Do basic validation of super vbmeta.
+    if (header->magic != SUPER_VBMETA_MAGIC) {
+        return Error() << "Super VBMeta has invalid magic value";
+    }
+
+    // Check that the version is compatible.
+    if (header->major_version != SUPER_VBMETA_MAJOR_VERSION ||
+        header->minor_version > SUPER_VBMETA_MINOR_VERSION) {
+        return Error() << "Super VBMeta has incompatible version";
+    }
+    return {};
+}
+
+void LoadVBMetaDescriptors(const void* buffer, uint32_t size,
+                           std::vector<InternalVBMetaDescriptor>* descriptors) {
+    for (int p = 0; p < size;) {
+        InternalVBMetaDescriptor descriptor;
+        memcpy(&descriptor, (char*)buffer + p, SUPER_VBMETA_DESCRIPTOR_SIZE);
+        p += SUPER_VBMETA_DESCRIPTOR_SIZE;
+
+        descriptor.vbmeta_name = std::string((char*)buffer + p, descriptor.vbmeta_name_length);
+        p += descriptor.vbmeta_name_length;
+
+        descriptors->emplace_back(std::move(descriptor));
+    }
+}
+
+Result<void> ReadVBMetaTable(int fd, uint64_t offset, VBMetaTable* table) {
+    std::unique_ptr<uint8_t[]> header_buffer =
+            std::make_unique<uint8_t[]>(SUPER_VBMETA_HEADER_SIZE);
+    if (!android::base::ReadFullyAtOffset(fd, header_buffer.get(), SUPER_VBMETA_HEADER_SIZE,
+                                          offset)) {
+        return ErrnoError() << "Couldn't read super vbmeta header at offset " << offset;
+    }
+
+    Result<void> rv_header = LoadAndVerifySuperVBMetaHeader(header_buffer.get(), &table->header);
+    if (!rv_header.ok()) {
+        return rv_header;
+    }
+
+    const uint64_t descriptors_offset = offset + table->header.header_size;
+    std::unique_ptr<uint8_t[]> descriptors_buffer =
+            std::make_unique<uint8_t[]>(table->header.descriptors_size);
+    if (!android::base::ReadFullyAtOffset(fd, descriptors_buffer.get(),
+                                          table->header.descriptors_size, descriptors_offset)) {
+        return ErrnoError() << "Couldn't read super vbmeta descriptors at offset "
+                            << descriptors_offset;
+    }
+
+    LoadVBMetaDescriptors(descriptors_buffer.get(), table->header.descriptors_size,
+                          &table->descriptors);
+    return {};
+}
+
+Result<void> ReadPrimaryVBMetaTable(int fd, VBMetaTable* table) {
+    uint64_t offset = PRIMARY_SUPER_VBMETA_TABLE_OFFSET;
+    return ReadVBMetaTable(fd, offset, table);
+}
+
+Result<void> ReadBackupVBMetaTable(int fd, VBMetaTable* table) {
+    uint64_t offset = BACKUP_SUPER_VBMETA_TABLE_OFFSET;
+    return ReadVBMetaTable(fd, offset, table);
+}
+
+Result<std::string> ReadVBMetaImage(int fd, int slot) {
+    const uint64_t offset = 2 * SUPER_VBMETA_TABLE_MAX_SIZE + slot * VBMETA_IMAGE_MAX_SIZE;
+    std::unique_ptr<uint8_t[]> buffer = std::make_unique<uint8_t[]>(VBMETA_IMAGE_MAX_SIZE);
+    if (!android::base::ReadFullyAtOffset(fd, buffer.get(), VBMETA_IMAGE_MAX_SIZE, offset)) {
+        return ErrnoError() << "Couldn't read vbmeta image at offset " << offset;
+    }
+    return std::string(reinterpret_cast<char*>(buffer.get()), VBMETA_IMAGE_MAX_SIZE);
+}
+
+Result<void> ValidateVBMetaImage(int super_vbmeta_fd, int vbmeta_index,
+                                 const std::string& vbmeta_image) {
+    Result<std::string> content = ReadVBMetaImage(super_vbmeta_fd, vbmeta_index);
+    if (!content.ok()) {
+        return content.error();
+    }
+
+    if (vbmeta_image != content.value()) {
+        return Error() << "VBMeta Image in Super VBMeta differ from the original one.";
+    }
+    return {};
+}
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/libvbmeta/reader.h b/fs_mgr/libvbmeta/reader.h
new file mode 100644
index 0000000..f0997ff
--- /dev/null
+++ b/fs_mgr/libvbmeta/reader.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/result.h>
+
+#include "super_vbmeta_format.h"
+
+namespace android {
+namespace fs_mgr {
+
+android::base::Result<void> ReadPrimaryVBMetaTable(int fd, VBMetaTable* table);
+android::base::Result<void> ReadBackupVBMetaTable(int fd, VBMetaTable* table);
+android::base::Result<std::string> ReadVBMetaImage(int fd, int slot);
+
+android::base::Result<void> ValidateVBMetaImage(int super_vbmeta_fd, int vbmeta_index,
+                                                const std::string& vbmeta_image);
+
+}  // namespace fs_mgr
+}  // namespace android
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/super_vbmeta_format.h b/fs_mgr/libvbmeta/super_vbmeta_format.h
new file mode 100644
index 0000000..c62a2dd
--- /dev/null
+++ b/fs_mgr/libvbmeta/super_vbmeta_format.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This .h file is intended for CPP clients (usually fastbootd, recovery and update_engine)  */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "super_vbmeta_format_c.h"
+
+struct InternalVBMetaDescriptor : VBMetaDescriptor {
+    /*  64: The vbmeta image's name */
+    std::string vbmeta_name;
+};
+
+struct VBMetaTable {
+    SuperVBMetaHeader header;
+    std::vector<InternalVBMetaDescriptor> descriptors;
+};
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/super_vbmeta_format_c.h b/fs_mgr/libvbmeta/super_vbmeta_format_c.h
new file mode 100644
index 0000000..6d79801
--- /dev/null
+++ b/fs_mgr/libvbmeta/super_vbmeta_format_c.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This .h file is intended for C clients (usually bootloader).  */
+
+#pragma once
+
+#include <stdint.h>
+
+/* Magic signature for super vbmeta. */
+#define SUPER_VBMETA_MAGIC 0x5356424d
+
+/* Current super vbmeta version. */
+#define SUPER_VBMETA_MAJOR_VERSION 1
+#define SUPER_VBMETA_MINOR_VERSION 0
+
+/* super vbmeta size. */
+#define SUPER_VBMETA_HEADER_SIZE sizeof(SuperVBMetaHeader)
+#define SUPER_VBMETA_DESCRIPTOR_SIZE sizeof(VBMetaDescriptor)
+#define SUPER_VBMETA_TABLE_MAX_SIZE 2048
+
+/* super vbmeta offset. */
+#define PRIMARY_SUPER_VBMETA_TABLE_OFFSET 0
+#define BACKUP_SUPER_VBMETA_TABLE_OFFSET SUPER_VBMETA_TABLE_MAX_SIZE
+
+/* restriction of vbmeta image */
+#define VBMETA_IMAGE_MAX_NUM 32
+#define VBMETA_IMAGE_MAX_SIZE 64 * 1024
+
+/* Binary format of the super vbmeta image.
+ *
+ * The super vbmeta image consists of two blocks:
+ *
+ *  +------------------------------------------+
+ *  | Super VBMeta Table - fixed size          |
+ *  +------------------------------------------+
+ *  | Backup Super VBMeta Table - fixed size   |
+ *  +------------------------------------------+
+ *  | VBMeta Images - fixed size               |
+ *  +------------------------------------------+
+ *
+ *  The "Super VBMeta Table" records the offset
+ *  and the size of each vbmeta_partition within
+ *  /super_vbmeta.
+ *
+ *  The "VBMeta Image" is copied from each vbmeta_partition
+ *  and filled with 0 until 64K bytes.
+ *
+ * The super vbmeta table consists of two blocks:
+ *
+ *  +-----------------------------------------+
+ *  | Header data - fixed size                |
+ *  +-----------------------------------------+
+ *  | VBMeta descriptors - variable size      |
+ *  +-----------------------------------------+
+ *
+ * The "Header data" block is described by the following struct and
+ * is always 128 bytes long.
+ *
+ * The "VBMeta descriptor" is |descriptors_size| + |vbmeta_name_length|
+ * bytes long. It contains the offset and size for each vbmeta image
+ * and is followed by |vbmeta_name_length| bytes of the partition name
+ * (UTF-8 encoded).
+ */
+
+typedef struct SuperVBMetaHeader {
+    /*  0: Magic signature (SUPER_VBMETA_MAGIC). */
+    uint32_t magic;
+
+    /*  4: Major version. Version number required to read this super vbmeta. If the version is not
+     * equal to the library version, the super vbmeta should be considered incompatible.
+     */
+    uint16_t major_version;
+
+    /*  6: Minor version. A library supporting newer features should be able to
+     * read super vbmeta with an older minor version. However, an older library
+     * should not support reading super vbmeta if its minor version is higher.
+     */
+    uint16_t minor_version;
+
+    /*  8: The size of this header struct. */
+    uint32_t header_size;
+
+    /*  12: The size of this super vbmeta table. */
+    uint32_t total_size;
+
+    /*  16: SHA256 checksum of this super vbmeta table, with this field set to 0. */
+    uint8_t checksum[32];
+
+    /*  48: The size of the vbmeta table descriptors. */
+    uint32_t descriptors_size;
+
+    /*  52: mark which slot is in use. */
+    uint32_t in_use = 0;
+
+    /*  56: reserved for other usage, filled with 0. */
+    uint8_t reserved[72];
+} __attribute__((packed)) SuperVBMetaHeader;
+
+typedef struct VBMetaDescriptor {
+    /*  0: The slot number of the vbmeta image. */
+    uint8_t vbmeta_index;
+
+    /*  12: The length of the vbmeta image name. */
+    uint32_t vbmeta_name_length;
+
+    /*  16: Space reserved for other usage, filled with 0. */
+    uint8_t reserved[48];
+} __attribute__((packed)) VBMetaDescriptor;
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/super_vbmeta_test.cpp b/fs_mgr/libvbmeta/super_vbmeta_test.cpp
new file mode 100644
index 0000000..daed0d1
--- /dev/null
+++ b/fs_mgr/libvbmeta/super_vbmeta_test.cpp
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <gtest/gtest.h>
+#include <openssl/sha.h>
+#include <sparse/sparse.h>
+
+#include "reader.h"
+#include "super_vbmeta_format.h"
+#include "utility.h"
+#include "writer.h"
+
+#define FAKE_DATA_SIZE 40960
+#define FAKE_PARTITION_SIZE FAKE_DATA_SIZE * 25
+
+using android::base::Result;
+using android::fs_mgr::GetFileSize;
+using android::fs_mgr::ReadVBMetaImage;
+using SparsePtr = std::unique_ptr<sparse_file, decltype(&sparse_file_destroy)>;
+
+void GeneratePartitionImage(int fd, const std::string& file_name,
+                            const std::string& partition_name) {
+    std::unique_ptr<uint8_t[]> buffer = std::make_unique<uint8_t[]>(FAKE_DATA_SIZE);
+    for (size_t c = 0; c < FAKE_DATA_SIZE; c++) {
+        buffer[c] = uint8_t(c);
+    }
+
+    SparsePtr file(sparse_file_new(512 /* block size */, FAKE_DATA_SIZE), sparse_file_destroy);
+    EXPECT_TRUE(file);
+    EXPECT_EQ(0, sparse_file_add_data(file.get(), buffer.get(), FAKE_DATA_SIZE,
+                                      0 /* offset in blocks */));
+    EXPECT_EQ(0, sparse_file_write(file.get(), fd, false /* gz */, true /* sparse */,
+                                   false /* crc */));
+
+    std::stringstream cmd;
+    cmd << "avbtool add_hashtree_footer"
+        << " --image " << file_name << " --partition_name " << partition_name
+        << " --partition_size " << FAKE_PARTITION_SIZE << " --algorithm SHA256_RSA2048"
+        << " --key external/avb/test/data/testkey_rsa2048.pem";
+
+    int rc = system(cmd.str().c_str());
+    EXPECT_TRUE(WIFEXITED(rc));
+    EXPECT_EQ(WEXITSTATUS(rc), 0);
+}
+
+void GenerateVBMetaImage(const std::string& vbmeta_file_name,
+                         const std::string& include_file_name) {
+    std::stringstream cmd;
+    cmd << "avbtool make_vbmeta_image"
+        << " --output " << vbmeta_file_name << " --include_descriptors_from_image "
+        << include_file_name;
+
+    int rc = system(cmd.str().c_str());
+    EXPECT_TRUE(WIFEXITED(rc));
+    EXPECT_EQ(WEXITSTATUS(rc), 0);
+}
+
+std::string ReadVBMetaImageFromFile(const std::string& file) {
+    android::base::unique_fd fd(open(file.c_str(), O_RDONLY | O_CLOEXEC));
+    EXPECT_GT(fd, 0);
+    Result<uint64_t> file_size = GetFileSize(fd);
+    EXPECT_RESULT_OK(file_size);
+    std::unique_ptr<uint8_t[]> buffer = std::make_unique<uint8_t[]>(VBMETA_IMAGE_MAX_SIZE);
+    EXPECT_TRUE(android::base::ReadFully(fd, buffer.get(), file_size.value()));
+    return std::string(reinterpret_cast<char*>(buffer.get()), VBMETA_IMAGE_MAX_SIZE);
+}
+
+TEST(VBMetaTableTest, VBMetaTableBasic) {
+    TemporaryDir td;
+
+    // Generate Partition Image
+    TemporaryFile system_tf(std::string(td.path));
+    std::string system_path(system_tf.path);
+    GeneratePartitionImage(system_tf.fd, system_path, "system");
+    system_tf.release();
+
+    TemporaryFile vendor_tf(std::string(td.path));
+    std::string vendor_path(vendor_tf.path);
+    GeneratePartitionImage(vendor_tf.fd, vendor_path, "vendor");
+    vendor_tf.release();
+
+    TemporaryFile product_tf(std::string(td.path));
+    std::string product_path(product_tf.path);
+    GeneratePartitionImage(product_tf.fd, product_path, "product");
+    product_tf.release();
+
+    // Generate VBMeta Image
+    std::string vbmeta_system_path(td.path);
+    vbmeta_system_path.append("/vbmeta_system.img");
+    GenerateVBMetaImage(vbmeta_system_path, system_path);
+
+    std::string vbmeta_vendor_path(td.path);
+    vbmeta_vendor_path.append("/vbmeta_vendor.img");
+    GenerateVBMetaImage(vbmeta_vendor_path, vendor_path);
+
+    std::string vbmeta_product_path(td.path);
+    vbmeta_product_path.append("/vbmeta_product.img");
+    GenerateVBMetaImage(vbmeta_product_path, product_path);
+
+    // Generate Super VBMeta Image
+    std::string super_vbmeta_path(td.path);
+    super_vbmeta_path.append("/super_vbmeta.img");
+
+    std::stringstream cmd;
+    cmd << "vbmake"
+        << " --image "
+        << "vbmeta_system"
+        << "=" << vbmeta_system_path << " --image "
+        << "vbmeta_vendor"
+        << "=" << vbmeta_vendor_path << " --image "
+        << "vbmeta_product"
+        << "=" << vbmeta_product_path << " --output=" << super_vbmeta_path;
+
+    int rc = system(cmd.str().c_str());
+    ASSERT_TRUE(WIFEXITED(rc));
+    ASSERT_EQ(WEXITSTATUS(rc), 0);
+
+    android::base::unique_fd fd(open(super_vbmeta_path.c_str(), O_RDONLY | O_CLOEXEC));
+    EXPECT_GT(fd, 0);
+
+    // Check the size of vbmeta table
+    Result<uint64_t> super_vbmeta_size = GetFileSize(fd);
+    EXPECT_RESULT_OK(super_vbmeta_size);
+    EXPECT_EQ(super_vbmeta_size.value(),
+              SUPER_VBMETA_TABLE_MAX_SIZE * 2 + VBMETA_IMAGE_MAX_SIZE * 3);
+
+    // Check Primary vbmeta table is equal to Backup one
+    VBMetaTable table;
+    EXPECT_RESULT_OK(android::fs_mgr::ReadPrimaryVBMetaTable(fd, &table));
+    VBMetaTable table_backup;
+    EXPECT_RESULT_OK(android::fs_mgr::ReadBackupVBMetaTable(fd, &table_backup));
+    EXPECT_EQ(android::fs_mgr::SerializeVBMetaTable(table),
+              android::fs_mgr::SerializeVBMetaTable(table_backup));
+
+    // Check vbmeta table Header Checksum
+    std::string serial_table = android::fs_mgr::SerializeVBMetaTable(table);
+    std::string serial_removed_checksum(serial_table);
+    // Replace checksum 32 bytes (starts at 16th byte) with 0
+    serial_removed_checksum.replace(16, 32, 32, 0);
+    uint8_t test_checksum[32];
+    ::SHA256(reinterpret_cast<const uint8_t*>(serial_removed_checksum.c_str()),
+             table.header.total_size, &test_checksum[0]);
+    EXPECT_EQ(memcmp(table.header.checksum, test_checksum, 32), 0);
+
+    // Check vbmeta table descriptors and vbmeta images
+    EXPECT_EQ(table.descriptors.size(), 3);
+
+    EXPECT_EQ(table.descriptors[0].vbmeta_index, 0);
+    EXPECT_EQ(table.descriptors[0].vbmeta_name_length, 14);
+    EXPECT_EQ(table.descriptors[0].vbmeta_name, "vbmeta_product");
+    Result<std::string> vbmeta_product_content = ReadVBMetaImage(fd, 0);
+    EXPECT_RESULT_OK(vbmeta_product_content);
+    EXPECT_EQ(ReadVBMetaImageFromFile(vbmeta_product_path), vbmeta_product_content.value());
+
+    EXPECT_EQ(table.descriptors[1].vbmeta_index, 1);
+    EXPECT_EQ(table.descriptors[1].vbmeta_name_length, 13);
+    EXPECT_EQ(table.descriptors[1].vbmeta_name, "vbmeta_system");
+    Result<std::string> vbmeta_system_content = ReadVBMetaImage(fd, 1);
+    EXPECT_RESULT_OK(vbmeta_system_content);
+    EXPECT_EQ(ReadVBMetaImageFromFile(vbmeta_system_path), vbmeta_system_content.value());
+
+    EXPECT_EQ(table.descriptors[2].vbmeta_index, 2);
+    EXPECT_EQ(table.descriptors[2].vbmeta_name_length, 13);
+    EXPECT_EQ(table.descriptors[2].vbmeta_name, "vbmeta_vendor");
+    Result<std::string> vbmeta_vendor_content = ReadVBMetaImage(fd, 2);
+    EXPECT_RESULT_OK(vbmeta_vendor_content);
+    EXPECT_EQ(ReadVBMetaImageFromFile(vbmeta_vendor_path), vbmeta_vendor_content.value());
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/fs_mgr/libvbmeta/utility.cpp b/fs_mgr/libvbmeta/utility.cpp
new file mode 100644
index 0000000..c184227
--- /dev/null
+++ b/fs_mgr/libvbmeta/utility.cpp
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "utility.h"
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "super_vbmeta_format.h"
+
+using android::base::ErrnoError;
+using android::base::Error;
+using android::base::Result;
+
+namespace android {
+namespace fs_mgr {
+
+Result<uint64_t> GetFileSize(int fd) {
+    struct stat sb;
+    if (fstat(fd, &sb) == -1) {
+        return ErrnoError() << "Couldn't get the file size";
+    }
+    return sb.st_size;
+}
+
+uint64_t IndexOffset(const uint8_t vbmeta_index) {
+    /* There are primary and backup vbmeta table in super_vbmeta,
+       so SUPER_VBMETA_TABLE_MAX_SIZE is counted twice. */
+    return 2 * SUPER_VBMETA_TABLE_MAX_SIZE + vbmeta_index * VBMETA_IMAGE_MAX_SIZE;
+}
+
+}  // namespace fs_mgr
+}  // namespace android
diff --git a/fs_mgr/libvbmeta/utility.h b/fs_mgr/libvbmeta/utility.h
new file mode 100644
index 0000000..91db0ad
--- /dev/null
+++ b/fs_mgr/libvbmeta/utility.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/logging.h>
+#include <android-base/result.h>
+
+#define VBMETA_TAG "[libvbmeta]"
+#define LWARN LOG(WARNING) << VBMETA_TAG
+#define LINFO LOG(INFO) << VBMETA_TAG
+#define LERROR LOG(ERROR) << VBMETA_TAG
+#define PWARNING PLOG(WARNING) << VBMETA_TAG
+#define PERROR PLOG(ERROR) << VBMETA_TAG
+
+namespace android {
+namespace fs_mgr {
+
+android::base::Result<uint64_t> GetFileSize(int fd);
+
+uint64_t IndexOffset(const uint8_t vbmeta_index);
+
+}  // namespace fs_mgr
+}  // namespace android
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/writer.cpp b/fs_mgr/libvbmeta/writer.cpp
new file mode 100644
index 0000000..fc0e0fb
--- /dev/null
+++ b/fs_mgr/libvbmeta/writer.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "writer.h"
+
+#include <android-base/file.h>
+
+#include "utility.h"
+
+using android::base::ErrnoError;
+using android::base::Result;
+
+namespace android {
+namespace fs_mgr {
+
+std::string SerializeVBMetaTable(const VBMetaTable& input) {
+    std::string table;
+    table.append(reinterpret_cast<const char*>(&input.header), SUPER_VBMETA_HEADER_SIZE);
+
+    for (const auto& desc : input.descriptors) {
+        table.append(reinterpret_cast<const char*>(&desc), SUPER_VBMETA_DESCRIPTOR_SIZE);
+        table.append(desc.vbmeta_name);
+    }
+
+    // Ensure the size of vbmeta table is SUPER_VBMETA_TABLE_MAX_SIZE
+    table.resize(SUPER_VBMETA_TABLE_MAX_SIZE, '\0');
+
+    return table;
+}
+
+Result<void> WritePrimaryVBMetaTable(int fd, const std::string& table) {
+    const uint64_t offset = PRIMARY_SUPER_VBMETA_TABLE_OFFSET;
+    if (lseek(fd, offset, SEEK_SET) < 0) {
+        return ErrnoError() << __PRETTY_FUNCTION__ << " lseek failed";
+    }
+
+    if (!android::base::WriteFully(fd, table.data(), table.size())) {
+        return ErrnoError() << "Failed to write primary vbmeta table at offset " << offset;
+    }
+    return {};
+}
+
+Result<void> WriteBackupVBMetaTable(int fd, const std::string& table) {
+    const uint64_t offset = BACKUP_SUPER_VBMETA_TABLE_OFFSET;
+    if (lseek(fd, offset, SEEK_SET) < 0) {
+        return ErrnoError() << __PRETTY_FUNCTION__ << " lseek failed";
+    }
+
+    if (!android::base::WriteFully(fd, table.data(), table.size())) {
+        return ErrnoError() << "Failed to write backup vbmeta table at offset " << offset;
+    }
+    return {};
+}
+
+Result<void> WriteVBMetaImage(int fd, const uint8_t slot_number, const std::string& vbmeta_image) {
+    const uint64_t offset = IndexOffset(slot_number);
+    if (lseek(fd, offset, SEEK_SET) < 0) {
+        return ErrnoError() << __PRETTY_FUNCTION__ << " lseek failed";
+    }
+
+    if (!android::base::WriteFully(fd, vbmeta_image.data(), vbmeta_image.size())) {
+        return ErrnoError() << "Failed to write vbmeta image at offset " << offset;
+    }
+    return {};
+}
+
+}  // namespace fs_mgr
+}  // namespace android
\ No newline at end of file
diff --git a/fs_mgr/libvbmeta/writer.h b/fs_mgr/libvbmeta/writer.h
new file mode 100644
index 0000000..f8eed36
--- /dev/null
+++ b/fs_mgr/libvbmeta/writer.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+#include <android-base/result.h>
+
+#include "super_vbmeta_format.h"
+
+namespace android {
+namespace fs_mgr {
+
+std::string SerializeVBMetaTable(const VBMetaTable& input);
+
+android::base::Result<void> WritePrimaryVBMetaTable(int fd, const std::string& table);
+android::base::Result<void> WriteBackupVBMetaTable(int fd, const std::string& table);
+android::base::Result<void> WriteVBMetaImage(int fd, const uint8_t slot_number,
+                                             const std::string& vbmeta_image);
+
+}  // namespace fs_mgr
+}  // namespace android
\ No newline at end of file
diff --git a/fs_mgr/tests/Android.bp b/fs_mgr/tests/Android.bp
index eb9f525..f68ab87 100644
--- a/fs_mgr/tests/Android.bp
+++ b/fs_mgr/tests/Android.bp
@@ -13,8 +13,21 @@
 // limitations under the License.
 
 cc_test {
-    name: "fs_mgr_unit_test",
-    test_suites: ["device-tests"],
+    name: "CtsFsMgrTestCases",
+    test_suites: [
+        "cts",
+        "device-tests",
+        "vts10",
+    ],
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
 
     shared_libs: [
         "libbase",
@@ -25,6 +38,7 @@
         "libfstab",
     ],
     srcs: [
+        "file_wait_test.cpp",
         "fs_mgr_test.cpp",
     ],
 
diff --git a/fs_mgr/tests/AndroidTest.xml b/fs_mgr/tests/AndroidTest.xml
new file mode 100644
index 0000000..0ff8995
--- /dev/null
+++ b/fs_mgr/tests/AndroidTest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Config for CTS fs_mgr test cases">
+    <option name="test-suite-tag" value="cts" />
+    <option name="config-descriptor:metadata" key="component" value="systems" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
+    <option name="config-descriptor:metadata" key="parameter" value="multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+        <option name="cleanup" value="true" />
+        <option name="push" value="CtsFsMgrTestCases->/data/local/tmp/CtsFsMgrTestCases" />
+        <option name="append-bitness" value="true" />
+    </target_preparer>
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="CtsFsMgrTestCases" />
+        <option name="runtime-hint" value="65s" />
+    </test>
+</configuration>
diff --git a/fs_mgr/tests/adb-remount-sh.xml b/fs_mgr/tests/adb-remount-sh.xml
index 716e324..fa0d63f 100644
--- a/fs_mgr/tests/adb-remount-sh.xml
+++ b/fs_mgr/tests/adb-remount-sh.xml
@@ -18,6 +18,8 @@
     <!-- This test requires a device, so it's not annotated with a null-device -->
     <test class="com.android.tradefed.testtype.binary.ExecutableHostTest" >
         <option name="binary" value="adb-remount-test.sh" />
+        <!-- Increase default timeout as script is quite long -->
+        <option name="per-binary-timeout" value="1h" />
     </test>
 </configuration>
 
diff --git a/fs_mgr/tests/adb-remount-test.sh b/fs_mgr/tests/adb-remount-test.sh
index c22176b..82c4262 100755
--- a/fs_mgr/tests/adb-remount-test.sh
+++ b/fs_mgr/tests/adb-remount-test.sh
@@ -15,10 +15,13 @@
 
 adb remount tests
 
---help        This help
---serial      Specify device (must if multiple are present)
---color       Dress output with highlighting colors
---print-time  Report the test duration
+--color                     Dress output with highlighting colors
+--help                      This help
+--no-wait-screen            Do not wait for display screen to settle
+--print-time                Report the test duration
+--serial                    Specify device (must if multiple are present)
+--wait-adb <duration>       adb wait timeout
+--wait-fastboot <duration>  fastboot wait timeout
 
 Conditions:
  - Must be a userdebug build.
@@ -33,7 +36,10 @@
 ##  Helper Variables
 ##
 
+EMPTY=""
 SPACE=" "
+# Line up wrap to [  XXXXXXX ] messages.
+INDENT="             "
 # A _real_ embedded tab character
 TAB="`echo | tr '\n' '\t'`"
 # A _real_ embedded escape character
@@ -50,6 +56,10 @@
 start_time=`date +%s`
 ACTIVE_SLOT=
 
+ADB_WAIT=4m
+FASTBOOT_WAIT=2m
+screen_wait=true
+
 ##
 ##  Helper Functions
 ##
@@ -131,10 +141,29 @@
 adb_logcat() {
   echo "${RED}[     INFO ]${NORMAL} logcat ${@}" >&2 &&
   adb logcat "${@}" </dev/null |
+    tr -d '\r' |
     grep -v 'logd    : logdr: UID=' |
     sed -e '${/------- beginning of kernel/d}' -e 's/^[0-1][0-9]-[0-3][0-9] //'
 }
 
+[ "USAGE: avc_check >/dev/stderr
+
+Returns: worrisome avc violations" ]
+avc_check() {
+  if ! ${overlayfs_supported:-false}; then
+    return
+  fi
+  local L=`adb_logcat -b all -v brief -d \
+                      -e 'context=u:object_r:unlabeled:s0' 2>/dev/null |
+             sed -n 's/.*avc: //p' |
+             sort -u`
+  if [ -z "${L}" ]; then
+    return
+  fi
+  echo "${ORANGE}[  WARNING ]${NORMAL} unlabeled sepolicy violations:" >&2
+  echo "${L}" | sed "s/^/${INDENT}/" >&2
+}
+
 [ "USAGE: get_property <prop>
 
 Returns the property value" ]
@@ -161,7 +190,7 @@
 [ "USAGE: adb_cat <file> >stdout
 
 Returns: content of file to stdout with carriage returns skipped,
-         true of the file exists" ]
+         true if the file exists" ]
 adb_cat() {
     local OUTPUT="`adb_sh cat ${1} </dev/null 2>&1`"
     local ret=${?}
@@ -169,11 +198,23 @@
     return ${ret}
 }
 
+[ "USAGE: adb_ls <dirfile> >stdout
+
+Returns: filename or directoru content to stdout with carriage returns skipped,
+         true if the ls had no errors" ]
+adb_ls() {
+    local OUTPUT="`adb_sh ls ${1} </dev/null 2>/dev/null`"
+    local ret=${?}
+    echo "${OUTPUT}" | tr -d '\r'
+    return ${ret}
+}
+
 [ "USAGE: adb_reboot
 
 Returns: true if the reboot command succeeded" ]
 adb_reboot() {
-  adb reboot remount-test || true
+  avc_check
+  adb reboot remount-test </dev/null || true
   sleep 2
 }
 
@@ -219,13 +260,34 @@
   echo ${hours}:`expr ${minutes} / 10``expr ${minutes} % 10`:`expr ${seconds} / 10``expr ${seconds} % 10`
 }
 
+[ "USAGE: USB_DEVICE=\`usb_devnum [--next]\`
+
+USB_DEVICE contains cache. Update if system changes.
+
+Returns: the devnum for the USB_SERIAL device" ]
+usb_devnum() {
+  if [ -n "${USB_SERIAL}" ]; then
+    local usb_device=`cat ${USB_SERIAL%/serial}/devnum 2>/dev/null | tr -d ' \t\r\n'`
+    if [ -n "${usb_device}" ]; then
+      USB_DEVICE=dev${usb_device}
+    elif [ -n "${USB_DEVICE}" -a "${1}" ]; then
+      USB_DEVICE=dev`expr ${USB_DEVICE#dev} + 1`
+    fi
+    echo "${USB_DEVICE}"
+  fi
+}
+
 [ "USAGE: adb_wait [timeout]
 
 Returns: waits until the device has returned for adb or optional timeout" ]
 adb_wait() {
+  local start=`date +%s`
+  local duration=
   local ret
   if [ -n "${1}" ]; then
-    echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} "${CR}"
+    USB_DEVICE=`usb_devnum --next`
+    duration=`format_duration ${1}`
+    echo -n ". . . waiting ${duration}" ${ANDROID_SERIAL} ${USB_ADDRESS} ${USB_DEVICE} "${CR}"
     timeout --preserve-status --signal=KILL ${1} adb wait-for-device 2>/dev/null
     ret=${?}
     echo -n "                                                                             ${CR}"
@@ -233,30 +295,83 @@
     adb wait-for-device
     ret=${?}
   fi
+  USB_DEVICE=`usb_devnum`
   if [ 0 = ${ret} -a -n "${ACTIVE_SLOT}" ]; then
     local active_slot=`get_active_slot`
     if [ X"${ACTIVE_SLOT}" != X"${active_slot}" ]; then
       echo "${ORANGE}[  WARNING ]${NORMAL} Active slot changed from ${ACTIVE_SLOT} to ${active_slot}" >&2
     fi
   fi
+  local end=`date +%s`
+  local diff_time=`expr ${end} - ${start}`
+  local _print_time=${print_time}
+  if [ ${diff_time} -lt 15 ]; then
+    _print_time=false
+  fi
+  diff_time=`format_duration ${diff_time}`
+  if [ "${diff_time}" = "${duration}" ]; then
+    _print_time=false
+  fi
+
+  local reason=
+  if inAdb; then
+    reason=`get_property ro.boot.bootreason`
+  fi
+  case ${reason} in
+    reboot*)
+      reason=
+      ;;
+    ${EMPTY})
+      ;;
+    *)
+      reason=" for boot reason ${reason}"
+      ;;
+  esac
+  if ${_print_time} || [ -n "${reason}" ]; then
+    echo "${BLUE}[     INFO ]${NORMAL} adb wait duration ${diff_time}${reason}"
+  fi >&2
+
   return ${ret}
 }
 
-[ "USAGE: usb_status > stdout
+[ "USAGE: adb_user > /dev/stdout
 
-If adb_wait failed, check if device is in adb, recovery or fastboot mode
-and report status string.
+Returns: the adb daemon user" ]
+adb_user() {
+  adb_sh echo '${USER}' </dev/null
+}
 
-Returns: \"(USB stack borken?)\", \"(In fastboot mode)\" or \"(in adb mode)\"" ]
+[ "USAGE: usb_status > stdout 2> stderr
+
+Assumes referenced right after adb_wait or fastboot_wait failued.
+If wait failed, check if device is in adb, recovery or fastboot mode
+and report status strings like  \"(USB stack borken?)\",
+\"(In fastboot mode)\", \"(In recovery mode)\" or \"(in adb mode)\".
+Additional diagnostics may be provided to the stderr output.
+
+Returns: USB status string" ]
 usb_status() {
   if inFastboot; then
     echo "(In fastboot mode)"
   elif inRecovery; then
     echo "(In recovery mode)"
   elif inAdb; then
-    echo "(In adb mode)"
+    echo "(In adb mode `adb_user`)"
   else
-    echo "(USB stack borken?)"
+    echo "(USB stack borken for ${USB_ADDRESS})"
+    USB_DEVICE=`usb_devnum`
+    if [ -n "${USB_DEVICE}" ]; then
+      echo "# lsusb -v -s ${USB_DEVICE#dev}"
+      local D=`lsusb -v -s ${USB_DEVICE#dev} 2>&1`
+      if [ -n "${D}" ]; then
+        echo "${D}"
+      else
+        lsusb -v
+      fi
+    else
+      echo "# lsusb -v (expected device missing)"
+      lsusb -v
+    fi >&2
   fi
 }
 
@@ -268,7 +383,8 @@
   # fastboot has no wait-for-device, but it does an automatic
   # wait and requires (even a nonsensical) command to do so.
   if [ -n "${1}" ]; then
-    echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} "${CR}"
+    USB_DEVICE=`usb_devnum --next`
+    echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} ${USB_DEVICE} "${CR}"
     timeout --preserve-status --signal=KILL ${1} fastboot wait-for-device >/dev/null 2>/dev/null
     ret=${?}
     echo -n "                                                                             ${CR}"
@@ -278,11 +394,12 @@
   fi ||
     inFastboot
   ret=${?}
+  USB_DEVICE=`usb_devnum`
   if [ 0 = ${ret} -a -n "${ACTIVE_SLOT}" ]; then
     local active_slot=`get_active_slot`
     if [ X"${ACTIVE_SLOT}" != X"${active_slot}" ]; then
-      echo "${ORANGE}[  WARNING ]${NORMAL} Active slot changed from ${ACTIVE_SLOT} to ${active_slot}" >&2
-    fi
+      echo "${ORANGE}[  WARNING ]${NORMAL} Active slot changed from ${ACTIVE_SLOT} to ${active_slot}"
+    fi >&2
   fi
   return ${ret}
 }
@@ -293,7 +410,8 @@
 recovery_wait() {
   local ret
   if [ -n "${1}" ]; then
-    echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} "${CR}"
+    USB_DEVICE=`usb_devnum --next`
+    echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} ${USB_DEVICE} "${CR}"
     timeout --preserve-status --signal=KILL ${1} adb wait-for-recovery 2>/dev/null
     ret=${?}
     echo -n "                                                                             ${CR}"
@@ -301,11 +419,12 @@
     adb wait-for-recovery
     ret=${?}
   fi
+  USB_DEVICE=`usb_devnum`
   if [ 0 = ${ret} -a -n "${ACTIVE_SLOT}" ]; then
     local active_slot=`get_active_slot`
     if [ X"${ACTIVE_SLOT}" != X"${active_slot}" ]; then
-      echo "${ORANGE}[  WARNING ]${NORMAL} Active slot changed from ${ACTIVE_SLOT} to ${active_slot}" >&2
-    fi
+      echo "${ORANGE}[  WARNING ]${NORMAL} Active slot changed from ${ACTIVE_SLOT} to ${active_slot}"
+    fi >&2
   fi
   return ${ret}
 }
@@ -327,17 +446,61 @@
   inFastboot || inAdb || inRecovery
 }
 
+wait_for_screen_timeout=900
+[ "USAGE: wait_for_screen [-n] [TIMEOUT]
+
+-n - echo newline at exit
+TIMEOUT - default `format_duration ${wait_for_screen_timeout}`" ]
+wait_for_screen() {
+  if ! ${screen_wait}; then
+    adb_wait
+    return
+  fi
+  exit_function=true
+  if [ X"-n" = X"${1}" ]; then
+    exit_function=echo
+    shift
+  fi
+  timeout=${wait_for_screen_timeout}
+  if [ ${#} -gt 0 ]; then
+    timeout=${1}
+    shift
+  fi
+  counter=0
+  while true; do
+    if inFastboot; then
+      fastboot reboot
+    elif inAdb; then
+      if [ 0 != ${counter} ]; then
+        adb_wait
+      fi
+      if [ "1" = "`get_property sys.boot_completed`" ]; then
+        sleep 1
+        break
+      fi
+    fi
+    counter=`expr ${counter} + 1`
+    if [ ${counter} -gt ${timeout} ]; then
+      ${exit_function}
+      echo "ERROR: wait_for_screen() timed out (`format_duration ${timeout}`)" >&2
+      return 1
+    fi
+    sleep 1
+  done
+  ${exit_function}
+}
+
 [ "USAGE: adb_root
 
 NB: This can be flakey on devices due to USB state
 
 Returns: true if device in root state" ]
 adb_root() {
-  [ root != "`adb_sh echo '${USER}' </dev/null`" ] || return 0
+  [ root != "`adb_user`" ] || return 0
   adb root >/dev/null </dev/null 2>/dev/null
   sleep 2
-  adb_wait 2m &&
-    [ root = "`adb_sh echo '${USER}' </dev/null`" ]
+  adb_wait ${ADB_WAIT} &&
+    [ root = "`adb_user`" ]
 }
 
 [ "USAGE: adb_unroot
@@ -346,11 +509,11 @@
 
 Returns: true if device in un root state" ]
 adb_unroot() {
-  [ root = "`adb_sh echo '${USER}' </dev/null`" ] || return 0
+  [ root = "`adb_user`" ] || return 0
   adb unroot >/dev/null </dev/null 2>/dev/null
   sleep 2
-  adb_wait 2m &&
-    [ root != "`adb_sh echo '${USER}' </dev/null`" ]
+  adb_wait ${ADB_WAIT} &&
+    [ root != "`adb_user`" ]
 }
 
 [ "USAGE: fastboot_getvar var expected >/dev/stderr
@@ -370,10 +533,10 @@
     O="${1}: <empty>"
   fi
   if [ -n "${2}" -a "${1}: ${2}" != "${O}" ]; then
-    echo "${2} != ${O}" >&2
+    echo "${2} != ${O}"
     false
     return
-  fi
+  fi >&2
   echo ${O} >&2
 }
 
@@ -430,16 +593,16 @@
 Returns: exit failure, report status" ]
 die() {
   if [ X"-d" = X"${1}" ]; then
-    adb_logcat -b all -v nsec -d >&2
+    adb_logcat -b all -v nsec -d
     shift
   elif [ X"-t" = X"${1}" ]; then
     if [ -n "${2}" ]; then
-      adb_logcat -b all -v nsec -t ${2} >&2
+      adb_logcat -b all -v nsec -t ${2}
     else
-      adb_logcat -b all -v nsec -d >&2
+      adb_logcat -b all -v nsec -d
     fi
     shift 2
-  fi
+  fi >&2
   echo "${RED}[  FAILED  ]${NORMAL} ${@}" >&2
   cleanup
   restore
@@ -464,39 +627,63 @@
   if ! ( echo X"${rval}" | grep '^X'"${lval}"'$' >/dev/null 2>/dev/null ); then
     if [ `echo ${lval}${rval}${*} | wc -c` -gt 50 -o "${rval}" != "${rval%
 *}" ]; then
-      echo "${prefix} expected \"${lval}\"" >&2
+      echo "${prefix} expected \"${lval}\""
       echo "${prefix} got \"${rval}\"" |
-        sed ': again
+        sed ": again
              N
-             s/\(\n\)\([^ ]\)/\1             \2/
-             t again' >&2
+             s/\(\n\)\([^ ]\)/\1${INDENT}\2/
+             t again"
       if [ -n "${*}" ] ; then
-        echo "${prefix} ${*}" >&2
+        echo "${prefix} ${*}"
       fi
     else
-      echo "${prefix} expected \"${lval}\" got \"${rval}\" ${*}" >&2
-    fi
+      echo "${prefix} expected \"${lval}\" got \"${rval}\" ${*}"
+    fi >&2
     return ${error}
   fi
   if [ -n "${*}" ] ; then
     prefix="${GREEN}[     INFO ]${NORMAL}"
     if [ X"${lval}" != X"${rval}" ]; then  # we were supplied a regex?
       if [ `echo ${lval}${rval}${*} | wc -c` -gt 60 -o "${rval}" != "${rval% *}" ]; then
-        echo "${prefix} ok \"${lval}\"" >&2
+        echo "${prefix} ok \"${lval}\""
         echo "       = \"${rval}\"" |
-          sed ': again
+          sed ": again
                N
-               s/\(\n\)\([^ ]\)/\1          \2/
-               t again' >&2
+               s/\(\n\)\([^ ]\)/\1${INDENT}\2/
+               t again"
         if [ -n "${*}" ] ; then
-          echo "${prefix} ${*}" >&2
+          echo "${prefix} ${*}"
         fi
       else
-        echo "${prefix} ok \"${lval}\" = \"${rval}\" ${*}" >&2
+        echo "${prefix} ok \"${lval}\" = \"${rval}\" ${*}"
       fi
     else
-      echo "${prefix} ok \"${lval}\" ${*}" >&2
-    fi
+      echo "${prefix} ok \"${lval}\" ${*}"
+    fi >&2
+  fi
+  return 0
+}
+
+[ "USAGE: EXPECT_NE <lval> <rval> [--warning [message]]
+
+Returns true if lval matches rval" ]
+EXPECT_NE() {
+  local lval="${1}"
+  local rval="${2}"
+  shift 2
+  local error=1
+  local prefix="${RED}[    ERROR ]${NORMAL}"
+  if [ X"${1}" = X"--warning" ]; then
+      prefix="${RED}[  WARNING ]${NORMAL}"
+      error=0
+      shift 1
+  fi
+  if [ X"${rval}" = X"${lval}" ]; then
+    echo "${prefix} did not expect \"${lval}\" ${*}" >&2
+    return ${error}
+  fi
+  if [ -n "${*}" ] ; then
+    echo "${prefix} ok \"${lval}\" not \"${rval}\" ${*}" >&2
   fi
   return 0
 }
@@ -512,8 +699,25 @@
       EXPECT_EQ "${lval}" "${rval}" ${*}
       return
   fi
-  EXPECT_EQ "${lval}" "${rval}" ||
+  if ! EXPECT_EQ "${lval}" "${rval}"; then
     die "${@}"
+  fi
+}
+
+[ "USAGE: check_ne <lval> <rval> [--warning [message]]
+
+Exits if lval matches rval" ]
+check_ne() {
+  local lval="${1}"
+  local rval="${2}"
+  shift 2
+  if [ X"${1}" = X"--warning" ]; then
+      EXPECT_NE "${lval}" "${rval}" ${*}
+      return
+  fi
+  if ! EXPECT_NE "${lval}" "${rval}"; then
+    die "${@}"
+  fi
 }
 
 [ "USAGE: skip_administrative_mounts [data] < /proc/mounts
@@ -528,6 +732,7 @@
   grep -v \
     -e "^\(overlay\|tmpfs\|none\|sysfs\|proc\|selinuxfs\|debugfs\|bpf\) " \
     -e "^\(binfmt_misc\|cg2_bpf\|pstore\|tracefs\|adb\|mtp\|ptp\|devpts\) " \
+    -e " functionfs " \
     -e "^\(/data/media\|/dev/block/loop[0-9]*\) " \
     -e "^rootfs / rootfs rw," \
     -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|persist\|metadata\) "
@@ -550,6 +755,9 @@
 
 OPTIONS=`getopt --alternative --unquoted \
                 --longoptions help,serial:,colour,color,no-colour,no-color \
+                --longoptions wait-adb:,wait-fastboot: \
+                --longoptions wait-screen,wait-display \
+                --longoptions no-wait-screen,no-wait-display \
                 --longoptions gtest_print_time,print-time \
                 -- "?hs:" ${*}` ||
   ( echo "${USAGE}" >&2 ; false ) ||
@@ -573,9 +781,23 @@
     --no-color | --no-colour)
       color=false
       ;;
+    --no-wait-display | --no-wait-screen)
+      screen_wait=false
+      ;;
+    --wait-display | --wait-screen)
+      screen_wait=true
+      ;;
     --print-time | --gtest_print_time)
       print_time=true
       ;;
+    --wait-adb)
+      ADB_WAIT=${2}
+      shift
+      ;;
+    --wait-fastboot)
+      FASTBOOT_WAIT=${2}
+      shift
+      ;;
     --)
       shift
       break
@@ -606,7 +828,7 @@
 inRecovery && die "device in recovery mode"
 if ! inAdb; then
   echo "${ORANGE}[  WARNING ]${NORMAL} device not in adb mode" >&2
-  adb_wait 2m
+  adb_wait ${ADB_WAIT}
 fi
 inAdb || die "specified device not in adb mode"
 isDebuggable || die "device not a debug build"
@@ -618,20 +840,23 @@
 
 # Do something.
 
+# Collect characteristics of the device and report.
+
 D=`get_property ro.serialno`
 [ -n "${D}" ] || D=`get_property ro.boot.serialno`
 [ -z "${D}" -o -n "${ANDROID_SERIAL}" ] || ANDROID_SERIAL=${D}
 USB_SERIAL=
 [ -z "${ANDROID_SERIAL}" ] || USB_SERIAL=`find /sys/devices -name serial |
                                           grep usb |
-                                          xargs grep -l ${ANDROID_SERIAL}`
+                                          xargs -r grep -l ${ANDROID_SERIAL}`
 USB_ADDRESS=
 if [ -n "${USB_SERIAL}" ]; then
   USB_ADDRESS=${USB_SERIAL%/serial}
   USB_ADDRESS=usb${USB_ADDRESS##*/}
 fi
 [ -z "${ANDROID_SERIAL}${USB_ADDRESS}" ] ||
-  echo "${BLUE}[     INFO ]${NORMAL}" ${ANDROID_SERIAL} ${USB_ADDRESS} >&2
+  USB_DEVICE=`usb_devnum`
+  echo "${BLUE}[     INFO ]${NORMAL}" ${ANDROID_SERIAL} ${USB_ADDRESS} ${USB_DEVICE} >&2
 BUILD_DESCRIPTION=`get_property ro.build.description`
 [ -z "${BUILD_DESCRIPTION}" ] ||
   echo "${BLUE}[     INFO ]${NORMAL} ${BUILD_DESCRIPTION}" >&2
@@ -639,49 +864,110 @@
 [ -z "${ACTIVE_SLOT}" ] ||
   echo "${BLUE}[     INFO ]${NORMAL} active slot is ${ACTIVE_SLOT}" >&2
 
+# Acquire list of system partitions
+
+PARTITIONS=`adb_su cat /vendor/etc/fstab* |
+              skip_administrative_mounts |
+              sed -n "s@^\([^ ${TAB}/][^ ${TAB}/]*\)[ ${TAB}].*[, ${TAB}]ro[, ${TAB}].*@\1@p" |
+              sort -u |
+              tr '\n' ' '`
+PARTITIONS="${PARTITIONS:-system vendor}"
+# KISS (we do not support sub-mounts for system partitions currently)
+MOUNTS="`for i in ${PARTITIONS}; do
+           echo /${i}
+         done |
+         tr '\n' ' '`"
+echo "${BLUE}[     INFO ]${NORMAL} System Partitions list: ${PARTITIONS}" >&2
+
 # Report existing partition sizes
-adb_sh ls -l /dev/block/by-name/ </dev/null 2>/dev/null |
+adb_sh ls -l /dev/block/by-name/ /dev/block/mapper/ </dev/null 2>/dev/null |
   sed -n 's@.* \([^ ]*\) -> /dev/block/\([^ ]*\)$@\1 \2@p' |
   while read name device; do
-    case ${name} in
-      system_[ab] | system | vendor_[ab] | vendor | super | cache)
-        case ${device} in
-          sd*)
-            device=${device%%[0-9]*}/${device}
-            ;;
-        esac
-        size=`adb_su cat /sys/block/${device}/size 2>/dev/null </dev/null` &&
-          size=`expr ${size} / 2` &&
-          echo "${BLUE}[     INFO ]${NORMAL} partition ${name} device ${device} size ${size}K" >&2
+    [ super = ${name} -o cache = ${name} ] ||
+      (
+        for i in ${PARTITIONS}; do
+          [ ${i} = ${name} -o ${i} = ${name%_[ab]} ] && exit
+        done
+        exit 1
+      ) ||
+      continue
+
+    case ${device} in
+      sd*)
+        device=${device%%[0-9]*}/${device}
         ;;
     esac
+    size=`adb_su cat /sys/block/${device}/size 2>/dev/null </dev/null` &&
+      size=`expr ${size} / 2` &&
+      echo "${BLUE}[     INFO ]${NORMAL} partition ${name} device ${device} size ${size}K" >&2
   done
 
+# If reboot too soon after fresh flash, could trip device update failure logic
+if ! wait_for_screen && ${screen_wait}; then
+  screen_wait=false
+  echo "${ORANGE}[  WARNING ]${NORMAL} not healthy, no launcher, skipping wait for screen" >&2
+fi
+
 # Can we test remount -R command?
+OVERLAYFS_BACKING="cache mnt/scratch"
 overlayfs_supported=true
-if [ "orange" = "`get_property ro.boot.verifiedbootstate`" -a \
-     "2" = "`get_property partition.system.verified`" ]; then
+if [ "orange" != "`get_property ro.boot.verifiedbootstate`" -o \
+     "2" != "`get_property partition.system.verified`" ]; then
   restore() {
     ${overlayfs_supported} || return 0
     inFastboot &&
       fastboot reboot &&
-      adb_wait 2m
+      adb_wait ${ADB_WAIT} ||
+      true
+    if inAdb; then
+      reboot=false
+      for d in ${OVERLAYFS_BACKING}; do
+        if adb_su ls -d /${d}/overlay </dev/null >/dev/null 2>/dev/null; then
+          adb_su rm -rf /${d}/overlay </dev/null
+          reboot=true
+        fi
+      done
+      if ${reboot}; then
+        adb_reboot &&
+        adb_wait ${ADB_WAIT}
+      fi
+    fi
+  }
+else
+  restore() {
+    ${overlayfs_supported} || return 0
+    inFastboot &&
+      fastboot reboot &&
+      adb_wait ${ADB_WAIT} ||
+      true
     inAdb &&
       adb_root &&
       adb enable-verity >/dev/null 2>/dev/null &&
       adb_reboot &&
-      adb_wait 2m
+      adb_wait ${ADB_WAIT}
   }
 
   echo "${GREEN}[ RUN      ]${NORMAL} Testing adb shell su root remount -R command" >&2
 
-  adb_su remount -R system </dev/null || true
+  avc_check
+  T=`adb_date`
+  adb_su remount -R system </dev/null
+  err=${?}
+  if [ "${err}" != 0 ]; then
+    echo "${ORANGE}[  WARNING ]${NORMAL} adb shell su root remount -R system = ${err}, likely did not reboot!" >&2
+    T="-t ${T}"
+  else
+    # Rebooted, logcat will be meaningless, and last logcat will likely be clear
+    T=""
+  fi
   sleep 2
-  adb_wait 2m ||
-    die "waiting for device after remount -R `usb_status`"
+  adb_wait ${ADB_WAIT} ||
+    die "waiting for device after adb shell su root remount -R system `usb_status`"
   if [ "orange" != "`get_property ro.boot.verifiedbootstate`" -o \
        "2" = "`get_property partition.system.verified`" ]; then
-    die "remount -R command failed"
+    die ${T} "remount -R command failed
+${INDENT}ro.boot.verifiedbootstate=\"`get_property ro.boot.verifiedbootstate`\"
+${INDENT}partition.system.verified=\"`get_property partition.system.verified`\""
   fi
 
   echo "${GREEN}[       OK ]${NORMAL} adb shell su root remount -R command" >&2
@@ -723,7 +1009,6 @@
 # So lets do our best to surgically wipe the overlayfs state without
 # having to go through enable-verity transition.
 reboot=false
-OVERLAYFS_BACKING="cache mnt/scratch"
 for d in ${OVERLAYFS_BACKING}; do
   if adb_sh ls -d /${d}/overlay </dev/null >/dev/null 2>/dev/null; then
     echo "${ORANGE}[  WARNING ]${NORMAL} /${d}/overlay is setup, surgically wiping" >&2
@@ -735,7 +1020,7 @@
 if ${reboot}; then
   echo "${ORANGE}[  WARNING ]${NORMAL} rebooting before test" >&2
   adb_reboot &&
-    adb_wait 2m ||
+    adb_wait ${ADB_WAIT} ||
     die "lost device after reboot after wipe `usb_status`"
   adb_root ||
     die "lost device after elevation to root after wipe `usb_status`"
@@ -766,6 +1051,15 @@
 echo "${D}"
 if [ X"${D}" = X"${D##* 100[%] }" ] && ${no_dedupe} ; then
   overlayfs_needed=false
+  # if device does not need overlays, then adb enable-verity will brick device
+  restore() {
+    ${overlayfs_supported} || return 0
+    inFastboot &&
+      fastboot reboot &&
+      adb_wait ${ADB_WAIT}
+    inAdb &&
+      adb_wait ${ADB_WAIT}
+  }
 elif ! ${overlayfs_supported}; then
   die "need overlayfs, but do not have it"
 fi
@@ -800,7 +1094,7 @@
   echo "${GREEN}[     INFO ]${NORMAL} rebooting as requested" >&2
   L=`adb_logcat -b all -v nsec -t ${T} 2>&1`
   adb_reboot &&
-    adb_wait 2m ||
+    adb_wait ${ADB_WAIT} ||
     die "lost device after reboot requested `usb_status`"
   adb_root ||
     die "lost device after elevation to root `usb_status`"
@@ -841,6 +1135,11 @@
 
 echo "${GREEN}[ RUN      ]${NORMAL} remount" >&2
 
+# Feed log with selinux denials as baseline before overlays
+adb_unroot
+adb_sh find ${MOUNTS} </dev/null >/dev/null 2>/dev/null
+adb_root
+
 D=`adb remount 2>&1`
 ret=${?}
 echo "${D}"
@@ -855,13 +1154,16 @@
 ret=${?}
 uses_dynamic_scratch=false
 scratch_partition=
+virtual_ab=`get_property ro.virtual_ab.enabled`
 if ${overlayfs_needed}; then
   if [ ${ret} != 0 ]; then
     die -t ${T} "overlay takeover failed"
   fi
   echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
    echo "${ORANGE}[  WARNING ]${NORMAL} overlay takeover not complete" >&2
-  scratch_partition=scratch
+  if [ -z "${virtual_ab}" ]; then
+    scratch_partition=scratch
+  fi
   if echo "${D}" | grep " /mnt/scratch" >/dev/null; then
     echo "${BLUE}[     INFO ]${NORMAL} using ${scratch_partition} dynamic partition for overrides" >&2
   fi
@@ -897,6 +1199,11 @@
     skip_unrelated_mounts |
     grep " overlay ro,") ||
     die "remount overlayfs missed a spot (ro)"
+  !(adb_sh grep -v noatime /proc/mounts </dev/null |
+    skip_administrative_mounts data |
+    skip_unrelated_mounts |
+    grep -v ' ro,') ||
+    die "mounts are not noatime"
   D=`adb_sh grep " rw," /proc/mounts </dev/null |
      skip_administrative_mounts data`
   if echo "${D}" | grep /dev/root >/dev/null; then
@@ -930,17 +1237,39 @@
 
 # Check something.
 
-echo "${GREEN}[ RUN      ]${NORMAL} push content to /system and /vendor" >&2
+echo "${GREEN}[ RUN      ]${NORMAL} push content to ${MOUNTS}" >&2
 
 A="Hello World! $(date)"
-echo "${A}" | adb_sh cat - ">/system/hello"
-echo "${A}" | adb_sh cat - ">/vendor/hello"
-B="`adb_cat /system/hello`" ||
-  die "sytem hello"
-check_eq "${A}" "${B}" /system before reboot
-B="`adb_cat /vendor/hello`" ||
-  die "vendor hello"
-check_eq "${A}" "${B}" /vendor before reboot
+for i in ${MOUNTS}; do
+  echo "${A}" | adb_sh cat - ">${i}/hello"
+  B="`adb_cat ${i}/hello`" ||
+    die "${i#/} hello"
+  check_eq "${A}" "${B}" ${i} before reboot
+done
+echo "${A}" | adb_sh cat - ">/system/priv-app/hello"
+B="`adb_cat /system/priv-app/hello`" ||
+  die "system priv-app hello"
+check_eq "${A}" "${B}" /system/priv-app before reboot
+SYSTEM_DEVT=`adb_sh stat --format=%D /system/hello </dev/null`
+VENDOR_DEVT=`adb_sh stat --format=%D /vendor/hello </dev/null`
+SYSTEM_INO=`adb_sh stat --format=%i /system/hello </dev/null`
+VENDOR_INO=`adb_sh stat --format=%i /vendor/hello </dev/null`
+BASE_SYSTEM_DEVT=`adb_sh stat --format=%D /system/bin/stat </dev/null`
+BASE_VENDOR_DEVT=`adb_sh stat --format=%D /vendor/bin/stat </dev/null`
+check_eq "${SYSTEM_DEVT%[0-9a-fA-F][0-9a-fA-F]}" "${VENDOR_DEVT%[0-9a-fA-F][0-9a-fA-F]}" vendor and system devt
+check_ne "${SYSTEM_INO}" "${VENDOR_INO}" vendor and system inode
+if ${overlayfs_needed}; then
+  check_ne "${SYSTEM_DEVT}" "${BASE_SYSTEM_DEVT}" system devt
+  check_ne "${VENDOR_DEVT}" "${BASE_VENDOR_DEVT}" vendor devt
+else
+  check_eq "${SYSTEM_DEVT}" "${BASE_SYSTEM_DEVT}" system devt
+  check_eq "${VENDOR_DEVT}" "${BASE_VENDOR_DEVT}" vendor devt
+fi
+check_ne "${BASE_SYSTEM_DEVT}" "${BASE_VENDOR_DEVT}" --warning system/vendor devt
+[ -n "${SYSTEM_DEVT%[0-9a-fA-F][0-9a-fA-F]}" ] ||
+  die "system devt ${SYSTEM_DEVT} is major 0"
+[ -n "${VENDOR_DEVT%[0-9a-fA-F][0-9a-fA-F]}" ] ||
+  die "vendor devt ${SYSTEM_DEVT} is major 0"
 
 # Download libc.so, append some gargage, push back, and check if the file
 # is updated.
@@ -961,8 +1290,16 @@
 
 echo "${GREEN}[ RUN      ]${NORMAL} reboot to confirm content persistent" >&2
 
+fixup_from_recovery() {
+  inRecovery || return 1
+  echo "${ORANGE}[    ERROR ]${NORMAL} Device in recovery" >&2
+  adb reboot </dev/null
+  adb_wait ${ADB_WAIT}
+}
+
 adb_reboot &&
-  adb_wait 2m ||
+  adb_wait ${ADB_WAIT} ||
+  fixup_from_recovery ||
   die "reboot after override content added failed `usb_status`"
 
 if ${overlayfs_needed}; then
@@ -985,16 +1322,36 @@
   B="`adb_cat /vendor/hello 2>&1`"
   check_eq "cat: /vendor/hello: Permission denied" "${B}" vendor after reboot w/o root
   echo "${GREEN}[       OK ]${NORMAL} /vendor content correct MAC after reboot" >&2
+  # Feed unprivileged log with selinux denials as a result of overlays
+  wait_for_screen
+  adb_sh find ${MOUNTS} </dev/null >/dev/null 2>/dev/null
 fi
-B="`adb_cat /system/hello`"
-check_eq "${A}" "${B}" /system after reboot
-echo "${GREEN}[       OK ]${NORMAL} /system content remains after reboot" >&2
+# If overlayfs has a nested security problem, this will fail.
+B="`adb_ls /system/`" ||
+  die "adb ls /system"
+[ X"${B}" != X"${B#*priv-app}" ] ||
+  die "adb ls /system/priv-app"
+B="`adb_cat /system/priv-app/hello`"
+check_eq "${A}" "${B}" /system/priv-app after reboot
 # Only root can read vendor if sepolicy permissions are as expected.
 adb_root ||
   die "adb root"
-B="`adb_cat /vendor/hello`"
-check_eq "${A}" "${B}" vendor after reboot
-echo "${GREEN}[       OK ]${NORMAL} /vendor content remains after reboot" >&2
+for i in ${MOUNTS}; do
+  B="`adb_cat ${i}/hello`"
+  check_eq "${A}" "${B}" ${i#/} after reboot
+  echo "${GREEN}[       OK ]${NORMAL} ${i} content remains after reboot" >&2
+done
+
+check_eq "${SYSTEM_DEVT}" "`adb_sh stat --format=%D /system/hello </dev/null`" system devt after reboot
+check_eq "${VENDOR_DEVT}" "`adb_sh stat --format=%D /vendor/hello </dev/null`" vendor devt after reboot
+check_eq "${SYSTEM_INO}" "`adb_sh stat --format=%i /system/hello </dev/null`" system inode after reboot
+check_eq "${VENDOR_INO}" "`adb_sh stat --format=%i /vendor/hello </dev/null`" vendor inode after reboot
+check_eq "${BASE_SYSTEM_DEVT}" "`adb_sh stat --format=%D /system/bin/stat </dev/null`" base system devt after reboot
+check_eq "${BASE_VENDOR_DEVT}" "`adb_sh stat --format=%D /vendor/bin/stat </dev/null`" base system devt after reboot
+check_eq "${BASE_SYSTEM_DEVT}" "`adb_sh stat --format=%D /system/xbin/su </dev/null`" devt for su after reboot
+
+# Feed log with selinux denials as a result of overlays
+adb_sh find ${MOUNTS} </dev/null >/dev/null 2>/dev/null
 
 # Check if the updated libc.so is persistent after reboot.
 adb_root &&
@@ -1025,10 +1382,17 @@
   echo "${ORANGE}[  WARNING ]${NORMAL} wrong vendor image, skipping"
 elif [ -z "${ANDROID_HOST_OUT}" ]; then
   echo "${ORANGE}[  WARNING ]${NORMAL} please run lunch, skipping"
+elif ! (
+          adb_cat /vendor/build.prop |
+          cmp -s ${ANDROID_PRODUCT_OUT}/vendor/build.prop
+       ) >/dev/null 2>/dev/null; then
+  echo "${ORANGE}[  WARNING ]${NORMAL} vendor image signature mismatch, skipping"
 else
-  adb reboot fastboot ||
+  wait_for_screen
+  avc_check
+  adb reboot fastboot </dev/null ||
     die "fastbootd not supported (wrong adb in path?)"
-  any_wait 2m &&
+  any_wait ${ADB_WAIT} &&
     inFastboot ||
     die "reboot into fastboot to flash vendor `usb_status` (bad bootloader?)"
   fastboot flash vendor ||
@@ -1069,8 +1433,9 @@
   fastboot reboot ||
     die "can not reboot out of fastboot"
   echo "${ORANGE}[  WARNING ]${NORMAL} adb after fastboot"
-  adb_wait 2m ||
-    die "did not reboot after flash `usb_status`"
+  adb_wait ${ADB_WAIT} ||
+    fixup_from_recovery ||
+    die "did not reboot after formatting ${scratch_partition} `usb_status`"
   if ${overlayfs_needed}; then
     adb_root &&
       D=`adb_sh df -k </dev/null` &&
@@ -1090,6 +1455,12 @@
   fi
   B="`adb_cat /system/hello`"
   check_eq "${A}" "${B}" system after flash vendor
+  B="`adb_ls /system/`" ||
+    die "adb ls /system"
+  [ X"${B}" != X"${B#*priv-app}" ] ||
+    die "adb ls /system/priv-app"
+  B="`adb_cat /system/priv-app/hello`"
+  check_eq "${A}" "${B}" system/priv-app after flash vendor
   adb_root ||
     die "adb root"
   B="`adb_cat /vendor/hello`"
@@ -1101,8 +1472,15 @@
     check_eq "cat: /vendor/hello: No such file or directory" "${B}" \
              --warning vendor content after flash vendor
   fi
+
+  check_eq "${SYSTEM_DEVT}" "`adb_sh stat --format=%D /system/hello </dev/null`" system devt after reboot
+  check_eq "${SYSTEM_INO}" "`adb_sh stat --format=%i /system/hello </dev/null`" system inode after reboot
+  check_eq "${BASE_SYSTEM_DEVT}" "`adb_sh stat --format=%D /system/bin/stat </dev/null`" base system devt after reboot
+  check_eq "${BASE_SYSTEM_DEVT}" "`adb_sh stat --format=%D /system/xbin/su </dev/null`" devt for su after reboot
+
 fi
 
+wait_for_screen
 echo "${GREEN}[ RUN      ]${NORMAL} remove test content (cleanup)" >&2
 
 T=`adb_date`
@@ -1114,7 +1492,7 @@
   echo "${ORANGE}[  WARNING ]${NORMAL} adb remount requires a reboot after partial flash (legacy avb)"
   L=`adb_logcat -b all -v nsec -t ${T} 2>&1`
   adb_reboot &&
-    adb_wait 2m &&
+    adb_wait ${ADB_WAIT} &&
     adb_root ||
     die "failed to reboot"
   T=`adb_date`
@@ -1124,27 +1502,33 @@
 echo "${H}"
 [ ${err} = 0 ] &&
   ( adb_sh rm /vendor/hello </dev/null 2>/dev/null || true ) &&
-  adb_sh rm /system/hello </dev/null ||
+  adb_sh rm /system/hello /system/priv-app/hello </dev/null ||
   ( [ -n "${L}" ] && echo "${L}" && false ) ||
   die -t ${T} "cleanup hello"
 B="`adb_cat /system/hello`"
 check_eq "cat: /system/hello: No such file or directory" "${B}" after rm
+B="`adb_cat /system/priv-app/hello`"
+check_eq "cat: /system/priv-app/hello: No such file or directory" "${B}" after rm
 B="`adb_cat /vendor/hello`"
 check_eq "cat: /vendor/hello: No such file or directory" "${B}" after rm
+for i in ${MOUNTS}; do
+  adb_sh rm ${i}/hello </dev/null 2>/dev/null || true
+done
 
-if [ -n "${scratch_partition}" ]; then
+if ${is_bootloader_fastboot} && [ -n "${scratch_partition}" ]; then
 
   echo "${GREEN}[ RUN      ]${NORMAL} test fastboot flash to ${scratch_partition} recovery" >&2
 
-  adb reboot fastboot ||
+  avc_check
+  adb reboot fastboot </dev/null ||
     die "Reboot into fastbootd"
   img=${TMPDIR}/adb-remount-test-${$}.img
   cleanup() {
     rm ${img}
   }
   dd if=/dev/zero of=${img} bs=4096 count=16 2>/dev/null &&
-    fastboot_wait 2m ||
-    die "reboot into fastboot `usb_status`"
+    fastboot_wait ${FASTBOOT_WAIT} ||
+    die "reboot into fastboot to flash scratch `usb_status`"
   fastboot flash --force ${scratch_partition} ${img}
   err=${?}
   cleanup
@@ -1155,9 +1539,9 @@
     die "can not reboot out of fastboot"
   [ 0 -eq ${err} ] ||
     die "fastboot flash ${scratch_partition}"
-  adb_wait 2m &&
+  adb_wait ${ADB_WAIT} &&
     adb_root ||
-    die "did not reboot after flash"
+    die "did not reboot after flashing empty ${scratch_partition} `usb_status`"
   T=`adb_date`
   D=`adb disable-verity 2>&1`
   err=${?}
@@ -1165,7 +1549,7 @@
   then
     echo "${ORANGE}[  WARNING ]${NORMAL} adb disable-verity requires a reboot after partial flash"
     adb_reboot &&
-      adb_wait 2m &&
+      adb_wait ${ADB_WAIT} &&
       adb_root ||
       die "failed to reboot"
     T=`adb_date`
@@ -1191,9 +1575,25 @@
 
 echo "${GREEN}[ RUN      ]${NORMAL} test raw remount commands" >&2
 
+fixup_from_fastboot() {
+  inFastboot || return 1
+  if [ -n "${ACTIVE_SLOT}" ]; then
+    local active_slot=`get_active_slot`
+    if [ X"${ACTIVE_SLOT}" != X"${active_slot}" ]; then
+      echo "${ORANGE}[    ERROR ]${NORMAL} Active slot changed from ${ACTIVE_SLOT} to ${active_slot}"
+    else
+      echo "${ORANGE}[    ERROR ]${NORMAL} Active slot to be set to ${ACTIVE_SLOT}"
+    fi >&2
+    fastboot --set-active=${ACTIVE_SLOT}
+  fi
+  fastboot reboot
+  adb_wait ${ADB_WAIT}
+}
+
 # Prerequisite is a prepped device from above.
 adb_reboot &&
-  adb_wait 2m ||
+  adb_wait ${ADB_WAIT} ||
+  fixup_from_fastboot ||
   die "lost device after reboot to ro state `usb_status`"
 adb_sh grep " /vendor .* rw," /proc/mounts >/dev/null </dev/null &&
   die "/vendor is not read-only"
@@ -1205,8 +1605,9 @@
 
 # Prerequisite is a prepped device from above.
 adb_reboot &&
-  adb_wait 2m ||
-  die "lost device after reboot to ro state (USB stack broken?)"
+  adb_wait ${ADB_WAIT} ||
+  fixup_from_fastboot ||
+  die "lost device after reboot to ro state `usb_status`"
 adb_sh grep " /vendor .* rw," /proc/mounts >/dev/null </dev/null &&
   die "/vendor is not read-only"
 adb_su remount vendor </dev/null ||
@@ -1225,30 +1626,50 @@
     die "/${d}/overlay wipe"
 done
 adb_reboot &&
-  adb_wait 2m ||
-  die "lost device after reboot after wipe (USB stack broken?)"
+  adb_wait ${ADB_WAIT} ||
+  fixup_from_fastboot ||
+  die "lost device after reboot after wipe `usb_status`"
 adb_sh grep " /vendor .* rw," /proc/mounts >/dev/null </dev/null &&
   die "/vendor is not read-only"
 adb_su remount vendor </dev/null ||
   die "remount command"
+adb_su df -k </dev/null | skip_unrelated_mounts
 adb_sh grep " /vendor .* rw," /proc/mounts >/dev/null </dev/null ||
   die "/vendor is not read-write"
-adb_sh grep " /system .* rw," /proc/mounts >/dev/null </dev/null &&
+adb_sh grep " \(/system\|/\) .* rw," /proc/mounts >/dev/null </dev/null &&
   die "/system is not read-only"
 echo "${GREEN}[       OK ]${NORMAL} remount command works from scratch" >&2
 
-restore
-err=${?}
+if ! restore; then
+  restore() {
+    true
+  }
+  die "failed to restore verity after remount from scratch test"
+fi
 
-if [ ${err} = 0 ] && ${overlayfs_supported}; then
+err=0
+
+if ${overlayfs_supported}; then
   echo "${GREEN}[ RUN      ]${NORMAL} test 'adb remount -R'" >&2
-  adb_root &&
-    adb remount -R &&
-    adb_wait 2m ||
-    die "adb remount -R"
+  avc_check
+  adb_root ||
+    die "adb root in preparation for adb remount -R"
+  T=`adb_date`
+  adb remount -R
+  err=${?}
+  if [ "${err}" != 0 ]; then
+    die -t ${T} "adb remount -R = ${err}"
+  fi
+  sleep 2
+  adb_wait ${ADB_WAIT} ||
+    die "waiting for device after adb remount -R `usb_status`"
   if [ "orange" != "`get_property ro.boot.verifiedbootstate`" -o \
-       "2" = "`get_property partition.system.verified`" ]; then
-    die "remount -R command failed to disable verity"
+       "2" = "`get_property partition.system.verified`" ] &&
+     [ -n "`get_property ro.boot.verifiedbootstate`" -o \
+       -n "`get_property partition.system.verified`" ]; then
+    die "remount -R command failed to disable verity
+${INDENT}ro.boot.verifiedbootstate=\"`get_property ro.boot.verifiedbootstate`\"
+${INDENT}partition.system.verified=\"`get_property partition.system.verified`\""
   fi
 
   echo "${GREEN}[       OK ]${NORMAL} 'adb remount -R' command" >&2
@@ -1262,7 +1683,7 @@
 }
 
 [ ${err} = 0 ] ||
-  die "failed to restore verity" >&2
+  die "failed to restore verity"
 
 echo "${GREEN}[  PASSED  ]${NORMAL} adb remount" >&2
 
diff --git a/fs_mgr/tests/file_wait_test.cpp b/fs_mgr/tests/file_wait_test.cpp
new file mode 100644
index 0000000..cc8b143
--- /dev/null
+++ b/fs_mgr/tests/file_wait_test.cpp
@@ -0,0 +1,91 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <chrono>
+#include <string>
+#include <thread>
+
+#include <android-base/file.h>
+#include <android-base/unique_fd.h>
+#include <fs_mgr/file_wait.h>
+#include <gtest/gtest.h>
+
+using namespace std::literals;
+using android::base::unique_fd;
+using android::fs_mgr::WaitForFile;
+using android::fs_mgr::WaitForFileDeleted;
+
+class FileWaitTest : public ::testing::Test {
+  protected:
+    void SetUp() override {
+        const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
+        test_file_ = temp_dir_.path + "/"s + tinfo->name();
+    }
+
+    void TearDown() override { unlink(test_file_.c_str()); }
+
+    TemporaryDir temp_dir_;
+    std::string test_file_;
+};
+
+TEST_F(FileWaitTest, FileExists) {
+    unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
+    ASSERT_GE(fd, 0);
+
+    ASSERT_TRUE(WaitForFile(test_file_, 500ms));
+    ASSERT_FALSE(WaitForFileDeleted(test_file_, 500ms));
+}
+
+TEST_F(FileWaitTest, FileDoesNotExist) {
+    ASSERT_FALSE(WaitForFile(test_file_, 500ms));
+    ASSERT_TRUE(WaitForFileDeleted(test_file_, 500ms));
+}
+
+TEST_F(FileWaitTest, CreateAsync) {
+    std::thread thread([this] {
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+        unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
+    });
+    EXPECT_TRUE(WaitForFile(test_file_, 3s));
+    thread.join();
+}
+
+TEST_F(FileWaitTest, CreateOtherAsync) {
+    std::thread thread([this] {
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+        unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
+    });
+    EXPECT_FALSE(WaitForFile(test_file_ + ".wontexist", 2s));
+    thread.join();
+}
+
+TEST_F(FileWaitTest, DeleteAsync) {
+    // Note: need to close the file, otherwise inotify considers it not deleted.
+    {
+        unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
+        ASSERT_GE(fd, 0);
+    }
+
+    std::thread thread([this] {
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+        unlink(test_file_.c_str());
+    });
+    EXPECT_TRUE(WaitForFileDeleted(test_file_, 3s));
+    thread.join();
+}
+
+TEST_F(FileWaitTest, BadPath) {
+    ASSERT_FALSE(WaitForFile("/this/path/does/not/exist", 5ms));
+    EXPECT_EQ(errno, ENOENT);
+}
diff --git a/fs_mgr/tests/fs_mgr_test.cpp b/fs_mgr/tests/fs_mgr_test.cpp
index 72afa69..46f1c59 100644
--- a/fs_mgr/tests/fs_mgr_test.cpp
+++ b/fs_mgr/tests/fs_mgr_test.cpp
@@ -27,6 +27,7 @@
 #include <android-base/file.h>
 #include <android-base/properties.h>
 #include <android-base/strings.h>
+#include <fs_mgr.h>
 #include <fstab/fstab.h>
 #include <gtest/gtest.h>
 
@@ -179,6 +180,7 @@
                 {"nodiratime", MS_NODIRATIME},
                 {"ro", MS_RDONLY},
                 {"rw", 0},
+                {"sync", MS_SYNCHRONOUS},
                 {"remount", MS_REMOUNT},
                 {"bind", MS_BIND},
                 {"rec", MS_REC},
@@ -197,7 +199,7 @@
         if (!(entry.flags & MS_RDONLY)) {
             fs_options.emplace("rw");
         }
-        EXPECT_EQ(mnt_opts, fs_options);
+        EXPECT_EQ(mnt_opts, fs_options) << "At line " << i;
         ++i;
     }
     EXPECT_EQ(i, fstab.size());
@@ -392,9 +394,9 @@
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
     std::string fstab_contents = R"fs(
-source none0       swap   defaults      encryptable,forceencrypt,fileencryption,forcefdeorfbe,keydirectory,length,swapprio,zramsize,max_comp_streams,reservedsize,eraseblk,logicalblk,sysfs_path,zram_loopback_path,zram_loopback_size,zram_backing_dev_path
+source none0       swap   defaults      encryptable,forceencrypt,fileencryption,forcefdeorfbe,keydirectory,length,swapprio,zramsize,max_comp_streams,reservedsize,eraseblk,logicalblk,sysfs_path,zram_backingdev_size
 
-source none1       swap   defaults      encryptable=,forceencrypt=,fileencryption=,keydirectory=,length=,swapprio=,zramsize=,max_comp_streams=,verify=,avb=,reservedsize=,eraseblk=,logicalblk=,sysfs_path=,zram_loopback_path=,zram_loopback_size=,zram_backing_dev_path=
+source none1       swap   defaults      encryptable=,forceencrypt=,fileencryption=,keydirectory=,length=,swapprio=,zramsize=,max_comp_streams=,avb=,reservedsize=,eraseblk=,logicalblk=,sysfs_path=,zram_backingdev_size=
 
 source none2       swap   defaults      forcefdeorfbe=
 
@@ -412,8 +414,7 @@
         EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
     }
     EXPECT_EQ("", entry->key_loc);
-    EXPECT_EQ("", entry->key_dir);
-    EXPECT_EQ("", entry->verity_loc);
+    EXPECT_EQ("", entry->metadata_key_dir);
     EXPECT_EQ(0, entry->length);
     EXPECT_EQ("", entry->label);
     EXPECT_EQ(-1, entry->partnum);
@@ -421,14 +422,11 @@
     EXPECT_EQ(0, entry->max_comp_streams);
     EXPECT_EQ(0, entry->zram_size);
     EXPECT_EQ(0, entry->reserved_size);
-    EXPECT_EQ("", entry->file_contents_mode);
-    EXPECT_EQ("", entry->file_names_mode);
+    EXPECT_EQ("", entry->encryption_options);
     EXPECT_EQ(0, entry->erase_blk_size);
     EXPECT_EQ(0, entry->logical_blk_size);
     EXPECT_EQ("", entry->sysfs_path);
-    EXPECT_EQ("", entry->zram_loopback_path);
-    EXPECT_EQ(512U * 1024U * 1024U, entry->zram_loopback_size);
-    EXPECT_EQ("", entry->zram_backing_dev_path);
+    EXPECT_EQ(0U, entry->zram_backingdev_size);
     entry++;
 
     EXPECT_EQ("none1", entry->mount_point);
@@ -437,13 +435,11 @@
         flags.crypt = true;
         flags.force_crypt = true;
         flags.file_encryption = true;
-        flags.verify = true;
         flags.avb = true;
         EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
     }
     EXPECT_EQ("", entry->key_loc);
-    EXPECT_EQ("", entry->key_dir);
-    EXPECT_EQ("", entry->verity_loc);
+    EXPECT_EQ("", entry->metadata_key_dir);
     EXPECT_EQ(0, entry->length);
     EXPECT_EQ("", entry->label);
     EXPECT_EQ(-1, entry->partnum);
@@ -451,25 +447,21 @@
     EXPECT_EQ(0, entry->max_comp_streams);
     EXPECT_EQ(0, entry->zram_size);
     EXPECT_EQ(0, entry->reserved_size);
-    EXPECT_EQ("", entry->file_contents_mode);
-    EXPECT_EQ("", entry->file_names_mode);
+    EXPECT_EQ("", entry->encryption_options);
     EXPECT_EQ(0, entry->erase_blk_size);
     EXPECT_EQ(0, entry->logical_blk_size);
     EXPECT_EQ("", entry->sysfs_path);
-    EXPECT_EQ("", entry->zram_loopback_path);
-    EXPECT_EQ(512U * 1024U * 1024U, entry->zram_loopback_size);
-    EXPECT_EQ("", entry->zram_backing_dev_path);
+    EXPECT_EQ(0U, entry->zram_backingdev_size);
     entry++;
 
-    // forcefdeorfbe sets file_contents_mode and file_names_mode by default, so test it separately.
+    // forcefdeorfbe has its own encryption_options defaults, so test it separately.
     EXPECT_EQ("none2", entry->mount_point);
     {
         FstabEntry::FsMgrFlags flags = {};
         flags.force_fde_or_fbe = true;
         EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
     }
-    EXPECT_EQ("aes-256-xts", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-cts", entry->file_names_mode);
+    EXPECT_EQ("aes-256-xts:aes-256-cts", entry->encryption_options);
     EXPECT_EQ("", entry->key_loc);
 }
 
@@ -639,29 +631,6 @@
     EXPECT_EQ(0, entry->zram_size);
 }
 
-TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_Verify) {
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    std::string fstab_contents = R"fs(
-source none0       swap   defaults      verify=/dir/key
-)fs";
-
-    ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));
-
-    Fstab fstab;
-    EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));
-    ASSERT_EQ(1U, fstab.size());
-
-    auto entry = fstab.begin();
-    EXPECT_EQ("none0", entry->mount_point);
-
-    FstabEntry::FsMgrFlags flags = {};
-    flags.verify = true;
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-
-    EXPECT_EQ("/dir/key", entry->verity_loc);
-}
-
 TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_ForceEncrypt) {
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
@@ -706,32 +675,21 @@
     EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
 
     EXPECT_EQ("/dir/key", entry->key_loc);
-    EXPECT_EQ("aes-256-xts", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-cts", entry->file_names_mode);
+    EXPECT_EQ("aes-256-xts:aes-256-cts", entry->encryption_options);
 }
 
 TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_FileEncryption) {
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
     std::string fstab_contents = R"fs(
-source none0       swap   defaults      fileencryption=blah
-source none1       swap   defaults      fileencryption=software
-source none2       swap   defaults      fileencryption=aes-256-xts
-source none3       swap   defaults      fileencryption=adiantum
-source none4       swap   defaults      fileencryption=adiantum:aes-256-heh
-source none5       swap   defaults      fileencryption=ice
-source none6       swap   defaults      fileencryption=ice:blah
-source none7       swap   defaults      fileencryption=ice:aes-256-cts
-source none8       swap   defaults      fileencryption=ice:aes-256-heh
-source none9       swap   defaults      fileencryption=ice:adiantum
-source none10      swap   defaults      fileencryption=ice:adiantum:
+source none0       swap   defaults      fileencryption=aes-256-xts:aes-256-cts:v1
 )fs";
 
     ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));
 
     Fstab fstab;
     EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));
-    ASSERT_EQ(11U, fstab.size());
+    ASSERT_EQ(1U, fstab.size());
 
     FstabEntry::FsMgrFlags flags = {};
     flags.file_encryption = true;
@@ -739,68 +697,7 @@
     auto entry = fstab.begin();
     EXPECT_EQ("none0", entry->mount_point);
     EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("", entry->file_contents_mode);
-    EXPECT_EQ("", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none1", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("aes-256-xts", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-cts", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none2", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("aes-256-xts", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-cts", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none3", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("adiantum", entry->file_contents_mode);
-    EXPECT_EQ("adiantum", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none4", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("adiantum", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-heh", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none5", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("ice", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-cts", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none6", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("ice", entry->file_contents_mode);
-    EXPECT_EQ("", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none7", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("ice", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-cts", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none8", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("ice", entry->file_contents_mode);
-    EXPECT_EQ("aes-256-heh", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none9", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("ice", entry->file_contents_mode);
-    EXPECT_EQ("adiantum", entry->file_names_mode);
-
-    entry++;
-    EXPECT_EQ("none10", entry->mount_point);
-    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ("", entry->file_contents_mode);
-    EXPECT_EQ("", entry->file_names_mode);
+    EXPECT_EQ("aes-256-xts:aes-256-cts:v1", entry->encryption_options);
 }
 
 TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_MaxCompStreams) {
@@ -992,7 +889,45 @@
     FstabEntry::FsMgrFlags flags = {};
     EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
 
-    EXPECT_EQ("/dir/key", entry->key_dir);
+    EXPECT_EQ("/dir/key", entry->metadata_key_dir);
+}
+
+TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_MetadataEncryption) {
+    TemporaryFile tf;
+    ASSERT_TRUE(tf.fd != -1);
+    std::string fstab_contents = R"fs(
+source none0       swap   defaults      keydirectory=/dir/key,metadata_encryption=adiantum
+)fs";
+
+    ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));
+
+    Fstab fstab;
+    EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));
+    ASSERT_EQ(1U, fstab.size());
+
+    auto entry = fstab.begin();
+    EXPECT_EQ("adiantum", entry->metadata_encryption);
+}
+
+TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_MetadataEncryption_WrappedKey) {
+    TemporaryFile tf;
+    ASSERT_TRUE(tf.fd != -1);
+    std::string fstab_contents = R"fs(
+source none0       swap   defaults      keydirectory=/dir/key,metadata_encryption=aes-256-xts:wrappedkey_v0
+)fs";
+
+    ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));
+
+    Fstab fstab;
+    EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));
+    ASSERT_EQ(1U, fstab.size());
+
+    auto entry = fstab.begin();
+    EXPECT_EQ("aes-256-xts:wrappedkey_v0", entry->metadata_encryption);
+    auto parts = android::base::Split(entry->metadata_encryption, ":");
+    EXPECT_EQ(2U, parts.size());
+    EXPECT_EQ("aes-256-xts", parts[0]);
+    EXPECT_EQ("wrappedkey_v0", parts[1]);
 }
 
 TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_SysfsPath) {
@@ -1021,14 +956,10 @@
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
     std::string fstab_contents = R"fs(
-source none0       swap   defaults      zram_loopback_path=/dev/path
-
-source none1       swap   defaults      zram_loopback_size=blah
-source none2       swap   defaults      zram_loopback_size=2
-source none3       swap   defaults      zram_loopback_size=1K
-source none4       swap   defaults      zram_loopback_size=2m
-
-source none5       swap   defaults      zram_backing_dev_path=/dev/path2
+source none1       swap   defaults      zram_backingdev_size=blah
+source none2       swap   defaults      zram_backingdev_size=2
+source none3       swap   defaults      zram_backingdev_size=1K
+source none4       swap   defaults      zram_backingdev_size=2m
 
 )fs";
 
@@ -1036,29 +967,47 @@
 
     Fstab fstab;
     EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));
-    ASSERT_EQ(6U, fstab.size());
+    ASSERT_EQ(4U, fstab.size());
 
     auto entry = fstab.begin();
-    EXPECT_EQ("none0", entry->mount_point);
-    EXPECT_EQ("/dev/path", entry->zram_loopback_path);
-    entry++;
 
     EXPECT_EQ("none1", entry->mount_point);
-    EXPECT_EQ(512U * 1024U * 1024U, entry->zram_loopback_size);
+    EXPECT_EQ(0U, entry->zram_backingdev_size);
     entry++;
 
     EXPECT_EQ("none2", entry->mount_point);
-    EXPECT_EQ(2U, entry->zram_loopback_size);
+    EXPECT_EQ(2U, entry->zram_backingdev_size);
     entry++;
 
     EXPECT_EQ("none3", entry->mount_point);
-    EXPECT_EQ(1024U, entry->zram_loopback_size);
+    EXPECT_EQ(1024U, entry->zram_backingdev_size);
     entry++;
 
     EXPECT_EQ("none4", entry->mount_point);
-    EXPECT_EQ(2U * 1024U * 1024U, entry->zram_loopback_size);
+    EXPECT_EQ(2U * 1024U * 1024U, entry->zram_backingdev_size);
     entry++;
+}
 
-    EXPECT_EQ("none5", entry->mount_point);
-    EXPECT_EQ("/dev/path2", entry->zram_backing_dev_path);
+TEST(fs_mgr, DefaultFstabContainsUserdata) {
+    Fstab fstab;
+    ASSERT_TRUE(ReadDefaultFstab(&fstab)) << "Failed to read default fstab";
+    ASSERT_NE(nullptr, GetEntryForMountPoint(&fstab, "/data"))
+            << "Default fstab doesn't contain /data entry";
+}
+
+TEST(fs_mgr, UserdataMountedFromDefaultFstab) {
+    if (getuid() != 0) {
+        GTEST_SKIP() << "Must be run as root.";
+        return;
+    }
+    Fstab fstab;
+    ASSERT_TRUE(ReadDefaultFstab(&fstab)) << "Failed to read default fstab";
+    Fstab proc_mounts;
+    ASSERT_TRUE(ReadFstabFromFile("/proc/mounts", &proc_mounts)) << "Failed to read /proc/mounts";
+    auto mounted_entry = GetEntryForMountPoint(&proc_mounts, "/data");
+    ASSERT_NE(mounted_entry, nullptr) << "/data is not mounted";
+    std::string block_device;
+    ASSERT_TRUE(android::base::Realpath(mounted_entry->blk_device, &block_device));
+    ASSERT_NE(nullptr, fs_mgr_get_mounted_entry_for_userdata(&fstab, block_device))
+            << "/data wasn't mounted from default fstab";
 }
diff --git a/fs_mgr/tools/dmctl.cpp b/fs_mgr/tools/dmctl.cpp
index 9309aad..2738457 100644
--- a/fs_mgr/tools/dmctl.cpp
+++ b/fs_mgr/tools/dmctl.cpp
@@ -38,15 +38,7 @@
 #include <vector>
 
 using namespace std::literals::string_literals;
-
-using DeviceMapper = ::android::dm::DeviceMapper;
-using DmTable = ::android::dm::DmTable;
-using DmTarget = ::android::dm::DmTarget;
-using DmTargetLinear = ::android::dm::DmTargetLinear;
-using DmTargetZero = ::android::dm::DmTargetZero;
-using DmTargetAndroidVerity = ::android::dm::DmTargetAndroidVerity;
-using DmTargetBow = ::android::dm::DmTargetBow;
-using DmTargetTypeInfo = ::android::dm::DmTargetTypeInfo;
+using namespace android::dm;
 using DmBlockDevice = ::android::dm::DeviceMapper::DmBlockDevice;
 
 static int Usage(void) {
@@ -57,6 +49,10 @@
     std::cerr << "  delete <dm-name>" << std::endl;
     std::cerr << "  list <devices | targets> [-v]" << std::endl;
     std::cerr << "  getpath <dm-name>" << std::endl;
+    std::cerr << "  info <dm-name>" << std::endl;
+    std::cerr << "  status <dm-name>" << std::endl;
+    std::cerr << "  resume <dm-name>" << std::endl;
+    std::cerr << "  suspend <dm-name>" << std::endl;
     std::cerr << "  table <dm-name>" << std::endl;
     std::cerr << "  help" << std::endl;
     std::cerr << std::endl;
@@ -122,6 +118,62 @@
             }
             std::string block_device = NextArg();
             return std::make_unique<DmTargetBow>(start_sector, num_sectors, block_device);
+        } else if (target_type == "snapshot-origin") {
+            if (!HasArgs(1)) {
+                std::cerr << "Expected \"snapshot-origin\" <block_device>" << std::endl;
+                return nullptr;
+            }
+            std::string block_device = NextArg();
+            return std::make_unique<DmTargetSnapshotOrigin>(start_sector, num_sectors,
+                                                            block_device);
+        } else if (target_type == "snapshot") {
+            if (!HasArgs(4)) {
+                std::cerr
+                        << "Expected \"snapshot\" <block_device> <block_device> <mode> <chunk_size>"
+                        << std::endl;
+                return nullptr;
+            }
+            std::string base_device = NextArg();
+            std::string cow_device = NextArg();
+            std::string mode_str = NextArg();
+            std::string chunk_size_str = NextArg();
+
+            SnapshotStorageMode mode;
+            if (mode_str == "P") {
+                mode = SnapshotStorageMode::Persistent;
+            } else if (mode_str == "N") {
+                mode = SnapshotStorageMode::Transient;
+            } else {
+                std::cerr << "Unrecognized mode: " << mode_str << "\n";
+                return nullptr;
+            }
+
+            uint32_t chunk_size;
+            if (!android::base::ParseUint(chunk_size_str, &chunk_size)) {
+                std::cerr << "Chunk size must be an unsigned integer.\n";
+                return nullptr;
+            }
+            return std::make_unique<DmTargetSnapshot>(start_sector, num_sectors, base_device,
+                                                      cow_device, mode, chunk_size);
+        } else if (target_type == "snapshot-merge") {
+            if (!HasArgs(3)) {
+                std::cerr
+                        << "Expected \"snapshot-merge\" <block_device> <block_device> <chunk_size>"
+                        << std::endl;
+                return nullptr;
+            }
+            std::string base_device = NextArg();
+            std::string cow_device = NextArg();
+            std::string chunk_size_str = NextArg();
+            SnapshotStorageMode mode = SnapshotStorageMode::Merge;
+
+            uint32_t chunk_size;
+            if (!android::base::ParseUint(chunk_size_str, &chunk_size)) {
+                std::cerr << "Chunk size must be an unsigned integer.\n";
+                return nullptr;
+            }
+            return std::make_unique<DmTargetSnapshot>(start_sector, num_sectors, base_device,
+                                                      cow_device, mode, chunk_size);
         } else {
             std::cerr << "Unrecognized target type: " << target_type << std::endl;
             return nullptr;
@@ -145,19 +197,12 @@
     char** argv_;
 };
 
-static int DmCreateCmdHandler(int argc, char** argv) {
-    if (argc < 1) {
-        std::cerr << "Usage: dmctl create <dm-name> [-ro] <targets...>" << std::endl;
-        return -EINVAL;
-    }
-    std::string name = argv[0];
-
+static bool parse_table_args(DmTable* table, int argc, char** argv) {
     // Parse extended options first.
-    DmTable table;
     int arg_index = 1;
     while (arg_index < argc && argv[arg_index][0] == '-') {
         if (strcmp(argv[arg_index], "-ro") == 0) {
-            table.set_readonly(true);
+            table->set_readonly(true);
             arg_index++;
         } else {
             std::cerr << "Unrecognized option: " << argv[arg_index] << std::endl;
@@ -169,15 +214,30 @@
     TargetParser parser(argc - arg_index, argv + arg_index);
     while (parser.More()) {
         std::unique_ptr<DmTarget> target = parser.Next();
-        if (!target || !table.AddTarget(std::move(target))) {
+        if (!target || !table->AddTarget(std::move(target))) {
             return -EINVAL;
         }
     }
 
-    if (table.num_targets() == 0) {
+    if (table->num_targets() == 0) {
         std::cerr << "Must define at least one target." << std::endl;
         return -EINVAL;
     }
+    return 0;
+}
+
+static int DmCreateCmdHandler(int argc, char** argv) {
+    if (argc < 1) {
+        std::cerr << "Usage: dmctl create <dm-name> [-ro] <targets...>" << std::endl;
+        return -EINVAL;
+    }
+    std::string name = argv[0];
+
+    DmTable table;
+    int ret = parse_table_args(&table, argc, argv);
+    if (ret) {
+        return ret;
+    }
 
     DeviceMapper& dm = DeviceMapper::Instance();
     if (!dm.CreateDevice(name, table)) {
@@ -203,6 +263,27 @@
     return 0;
 }
 
+static int DmReplaceCmdHandler(int argc, char** argv) {
+    if (argc < 1) {
+        std::cerr << "Usage: dmctl replace <dm-name> <targets...>" << std::endl;
+        return -EINVAL;
+    }
+    std::string name = argv[0];
+
+    DmTable table;
+    int ret = parse_table_args(&table, argc, argv);
+    if (ret) {
+        return ret;
+    }
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (!dm.LoadTableAndActivate(name, table)) {
+        std::cerr << "Failed to replace device-mapper table to: " << name << std::endl;
+        return -EIO;
+    }
+    return 0;
+}
+
 static int DmListTargets(DeviceMapper& dm, [[maybe_unused]] int argc,
                          [[maybe_unused]] char** argv) {
     std::vector<DmTargetTypeInfo> targets;
@@ -308,7 +389,42 @@
     return 0;
 }
 
-static int TableCmdHandler(int argc, char** argv) {
+static int InfoCmdHandler(int argc, char** argv) {
+    if (argc != 1) {
+        std::cerr << "Invalid arguments, see \'dmctl help\'" << std::endl;
+        return -EINVAL;
+    }
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    auto info = dm.GetDetailedInfo(argv[0]);
+    if (!info) {
+        std::cerr << "Invalid device \"" << argv[0] << "\"." << std::endl;
+        return -EINVAL;
+    }
+
+    constexpr int spacing = 14;
+    std::cout << std::left << std::setw(spacing) << "device"
+              << ": " << argv[0] << std::endl;
+    std::cout << std::left << std::setw(spacing) << "active"
+              << ": " << std::boolalpha << !info->IsSuspended() << std::endl;
+    std::cout << std::left << std::setw(spacing) << "access"
+              << ": ";
+    if (info->IsReadOnly()) {
+        std::cout << "ro ";
+    } else {
+        std::cout << "rw ";
+    }
+    std::cout << std::endl;
+    std::cout << std::left << std::setw(spacing) << "activeTable"
+              << ": " << std::boolalpha << info->IsActiveTablePresent() << std::endl;
+    std::cout << std::left << std::setw(spacing) << "inactiveTable"
+              << ": " << std::boolalpha << info->IsInactiveTablePresent() << std::endl;
+    std::cout << std::left << std::setw(spacing) << "bufferFull"
+              << ": " << std::boolalpha << info->IsBufferFull() << std::endl;
+    return 0;
+}
+
+static int DumpTable(const std::string& mode, int argc, char** argv) {
     if (argc != 1) {
         std::cerr << "Invalid arguments, see \'dmctl help\'" << std::endl;
         return -EINVAL;
@@ -316,9 +432,18 @@
 
     DeviceMapper& dm = DeviceMapper::Instance();
     std::vector<DeviceMapper::TargetInfo> table;
-    if (!dm.GetTableInfo(argv[0], &table)) {
-        std::cerr << "Could not query table status of device \"" << argv[0] << "\"." << std::endl;
-        return -EINVAL;
+    if (mode == "status") {
+        if (!dm.GetTableStatus(argv[0], &table)) {
+            std::cerr << "Could not query table status of device \"" << argv[0] << "\"."
+                      << std::endl;
+            return -EINVAL;
+        }
+    } else if (mode == "table") {
+        if (!dm.GetTableInfo(argv[0], &table)) {
+            std::cerr << "Could not query table status of device \"" << argv[0] << "\"."
+                      << std::endl;
+            return -EINVAL;
+        }
     }
     std::cout << "Targets in the device-mapper table for " << argv[0] << ":" << std::endl;
     for (const auto& target : table) {
@@ -333,14 +458,55 @@
     return 0;
 }
 
+static int TableCmdHandler(int argc, char** argv) {
+    return DumpTable("table", argc, argv);
+}
+
+static int StatusCmdHandler(int argc, char** argv) {
+    return DumpTable("status", argc, argv);
+}
+
+static int ResumeCmdHandler(int argc, char** argv) {
+    if (argc != 1) {
+        std::cerr << "Invalid arguments, see \'dmctl help\'" << std::endl;
+        return -EINVAL;
+    }
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (!dm.ChangeState(argv[0], DmDeviceState::ACTIVE)) {
+        std::cerr << "Could not resume device \"" << argv[0] << "\"." << std::endl;
+        return -EINVAL;
+    }
+    return 0;
+}
+
+static int SuspendCmdHandler(int argc, char** argv) {
+    if (argc != 1) {
+        std::cerr << "Invalid arguments, see \'dmctl help\'" << std::endl;
+        return -EINVAL;
+    }
+
+    DeviceMapper& dm = DeviceMapper::Instance();
+    if (!dm.ChangeState(argv[0], DmDeviceState::SUSPENDED)) {
+        std::cerr << "Could not suspend device \"" << argv[0] << "\"." << std::endl;
+        return -EINVAL;
+    }
+    return 0;
+}
+
 static std::map<std::string, std::function<int(int, char**)>> cmdmap = {
         // clang-format off
         {"create", DmCreateCmdHandler},
         {"delete", DmDeleteCmdHandler},
+        {"replace", DmReplaceCmdHandler},
         {"list", DmListCmdHandler},
         {"help", HelpCmdHandler},
         {"getpath", GetPathCmdHandler},
+        {"info", InfoCmdHandler},
         {"table", TableCmdHandler},
+        {"status", StatusCmdHandler},
+        {"resume", ResumeCmdHandler},
+        {"suspend", SuspendCmdHandler},
         // clang-format on
 };
 
diff --git a/gatekeeperd/Android.bp b/gatekeeperd/Android.bp
index 2b7db79..27a6452 100644
--- a/gatekeeperd/Android.bp
+++ b/gatekeeperd/Android.bp
@@ -23,8 +23,6 @@
         "-Wunused",
     ],
     srcs: [
-        "SoftGateKeeperDevice.cpp",
-        "IGateKeeperService.cpp",
         "gatekeeperd.cpp",
     ],
 
@@ -40,12 +38,45 @@
         "libkeystore_aidl",
         "libkeystore_binder",
         "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
         "android.hardware.gatekeeper@1.0",
+        "libgatekeeper_aidl",
     ],
 
     static_libs: ["libscrypt_static"],
     include_dirs: ["external/scrypt/lib/crypto"],
     init_rc: ["gatekeeperd.rc"],
 }
+
+filegroup {
+    name: "gatekeeper_aidl",
+    srcs: [
+        "binder/android/service/gatekeeper/IGateKeeperService.aidl",
+    ],
+    path: "binder",
+}
+
+cc_library_shared {
+    name: "libgatekeeper_aidl",
+    srcs: [
+        ":gatekeeper_aidl",
+        "GateKeeperResponse.cpp",
+    ],
+    aidl: {
+        export_aidl_headers: true,
+        include_dirs: [
+            "system/core/gatekeeperd/binder",
+            "frameworks/base/core/java/",
+        ],
+    },
+    export_include_dirs: ["include"],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libcutils",
+        "liblog",
+        "libutils",
+    ],
+    export_shared_lib_headers: [
+        "libbinder",
+    ],
+}
diff --git a/gatekeeperd/GateKeeperResponse.cpp b/gatekeeperd/GateKeeperResponse.cpp
new file mode 100644
index 0000000..ca0c98f
--- /dev/null
+++ b/gatekeeperd/GateKeeperResponse.cpp
@@ -0,0 +1,83 @@
+/*
+**
+** Copyright 2019, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#define LOG_TAG "gatekeeperd"
+
+#include <gatekeeper/GateKeeperResponse.h>
+
+#include <binder/Parcel.h>
+
+#include <android-base/logging.h>
+
+namespace android {
+namespace service {
+namespace gatekeeper {
+
+status_t GateKeeperResponse::readFromParcel(const Parcel* in) {
+    if (in == nullptr) {
+        LOG(ERROR) << "readFromParcel got null in parameter";
+        return BAD_VALUE;
+    }
+    timeout_ = 0;
+    should_reenroll_ = false;
+    payload_ = {};
+    response_code_ = ResponseCode(in->readInt32());
+    if (response_code_ == ResponseCode::OK) {
+        should_reenroll_ = in->readInt32();
+        ssize_t length = in->readInt32();
+        if (length > 0) {
+            length = in->readInt32();
+            const uint8_t* buf = reinterpret_cast<const uint8_t*>(in->readInplace(length));
+            if (buf == nullptr) {
+                LOG(ERROR) << "readInplace returned null buffer for length " << length;
+                return BAD_VALUE;
+            }
+            payload_.resize(length);
+            std::copy(buf, buf + length, payload_.data());
+        }
+    } else if (response_code_ == ResponseCode::RETRY) {
+        timeout_ = in->readInt32();
+    }
+    return NO_ERROR;
+}
+status_t GateKeeperResponse::writeToParcel(Parcel* out) const {
+    if (out == nullptr) {
+        LOG(ERROR) << "writeToParcel got null out parameter";
+        return BAD_VALUE;
+    }
+    out->writeInt32(int32_t(response_code_));
+    if (response_code_ == ResponseCode::OK) {
+        out->writeInt32(should_reenroll_);
+        out->writeInt32(payload_.size());
+        if (payload_.size() != 0) {
+            out->writeInt32(payload_.size());
+            uint8_t* buf = reinterpret_cast<uint8_t*>(out->writeInplace(payload_.size()));
+            if (buf == nullptr) {
+                LOG(ERROR) << "writeInplace returned null buffer for length " << payload_.size();
+                return BAD_VALUE;
+            }
+            std::copy(payload_.begin(), payload_.end(), buf);
+        }
+    } else if (response_code_ == ResponseCode::RETRY) {
+        out->writeInt32(timeout_);
+    }
+    return NO_ERROR;
+}
+
+}  // namespace gatekeeper
+}  // namespace service
+}  // namespace android
diff --git a/gatekeeperd/IGateKeeperService.cpp b/gatekeeperd/IGateKeeperService.cpp
deleted file mode 100644
index 43d5708..0000000
--- a/gatekeeperd/IGateKeeperService.cpp
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- * Copyright 2015, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
-*/
-
-#define LOG_TAG "GateKeeperService"
-#include <utils/Log.h>
-
-#include "IGateKeeperService.h"
-
-namespace android {
-
-const android::String16 IGateKeeperService::descriptor("android.service.gatekeeper.IGateKeeperService");
-const android::String16& IGateKeeperService::getInterfaceDescriptor() const {
-    return IGateKeeperService::descriptor;
-}
-
-status_t BnGateKeeperService::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
-    switch(code) {
-        case ENROLL: {
-            CHECK_INTERFACE(IGateKeeperService, data, reply);
-            uint32_t uid = data.readInt32();
-
-            ssize_t currentPasswordHandleSize = data.readInt32();
-            const uint8_t *currentPasswordHandle =
-                    static_cast<const uint8_t *>(data.readInplace(currentPasswordHandleSize));
-            if (!currentPasswordHandle) currentPasswordHandleSize = 0;
-
-            ssize_t currentPasswordSize = data.readInt32();
-            const uint8_t *currentPassword =
-                    static_cast<const uint8_t *>(data.readInplace(currentPasswordSize));
-            if (!currentPassword) currentPasswordSize = 0;
-
-            ssize_t desiredPasswordSize = data.readInt32();
-            const uint8_t *desiredPassword =
-                    static_cast<const uint8_t *>(data.readInplace(desiredPasswordSize));
-            if (!desiredPassword) desiredPasswordSize = 0;
-
-            uint8_t *out = NULL;
-            uint32_t outSize = 0;
-            int ret = enroll(uid, currentPasswordHandle, currentPasswordHandleSize,
-                    currentPassword, currentPasswordSize, desiredPassword,
-                    desiredPasswordSize, &out, &outSize);
-
-            reply->writeNoException();
-            reply->writeInt32(1);
-            if (ret == 0 && outSize > 0 && out != NULL) {
-                reply->writeInt32(GATEKEEPER_RESPONSE_OK);
-                reply->writeInt32(0);
-                reply->writeInt32(outSize);
-                reply->writeInt32(outSize);
-                void *buf = reply->writeInplace(outSize);
-                memcpy(buf, out, outSize);
-                delete[] out;
-            } else if (ret > 0) {
-                reply->writeInt32(GATEKEEPER_RESPONSE_RETRY);
-                reply->writeInt32(ret);
-            } else {
-                reply->writeInt32(GATEKEEPER_RESPONSE_ERROR);
-            }
-            return OK;
-        }
-        case VERIFY: {
-            CHECK_INTERFACE(IGateKeeperService, data, reply);
-            uint32_t uid = data.readInt32();
-            ssize_t currentPasswordHandleSize = data.readInt32();
-            const uint8_t *currentPasswordHandle =
-                    static_cast<const uint8_t *>(data.readInplace(currentPasswordHandleSize));
-            if (!currentPasswordHandle) currentPasswordHandleSize = 0;
-
-            ssize_t currentPasswordSize = data.readInt32();
-            const uint8_t *currentPassword =
-                static_cast<const uint8_t *>(data.readInplace(currentPasswordSize));
-            if (!currentPassword) currentPasswordSize = 0;
-
-            bool request_reenroll = false;
-            int ret = verify(uid, (uint8_t *) currentPasswordHandle,
-                    currentPasswordHandleSize, (uint8_t *) currentPassword, currentPasswordSize,
-                    &request_reenroll);
-
-            reply->writeNoException();
-            reply->writeInt32(1);
-            if (ret == 0) {
-                reply->writeInt32(GATEKEEPER_RESPONSE_OK);
-                reply->writeInt32(request_reenroll ? 1 : 0);
-                reply->writeInt32(0); // no payload returned from this call
-            } else if (ret > 0) {
-                reply->writeInt32(GATEKEEPER_RESPONSE_RETRY);
-                reply->writeInt32(ret);
-            } else {
-                reply->writeInt32(GATEKEEPER_RESPONSE_ERROR);
-            }
-            return OK;
-        }
-        case VERIFY_CHALLENGE: {
-            CHECK_INTERFACE(IGateKeeperService, data, reply);
-            uint32_t uid = data.readInt32();
-            uint64_t challenge = data.readInt64();
-            ssize_t currentPasswordHandleSize = data.readInt32();
-            const uint8_t *currentPasswordHandle =
-                    static_cast<const uint8_t *>(data.readInplace(currentPasswordHandleSize));
-            if (!currentPasswordHandle) currentPasswordHandleSize = 0;
-
-            ssize_t currentPasswordSize = data.readInt32();
-            const uint8_t *currentPassword =
-                static_cast<const uint8_t *>(data.readInplace(currentPasswordSize));
-            if (!currentPassword) currentPasswordSize = 0;
-
-
-            uint8_t *out = NULL;
-            uint32_t outSize = 0;
-            bool request_reenroll = false;
-            int ret = verifyChallenge(uid, challenge, (uint8_t *) currentPasswordHandle,
-                    currentPasswordHandleSize, (uint8_t *) currentPassword, currentPasswordSize,
-                    &out, &outSize, &request_reenroll);
-            reply->writeNoException();
-            reply->writeInt32(1);
-            if (ret == 0 && outSize > 0 && out != NULL) {
-                reply->writeInt32(GATEKEEPER_RESPONSE_OK);
-                reply->writeInt32(request_reenroll ? 1 : 0);
-                reply->writeInt32(outSize);
-                reply->writeInt32(outSize);
-                void *buf = reply->writeInplace(outSize);
-                memcpy(buf, out, outSize);
-                delete[] out;
-            } else if (ret > 0) {
-                reply->writeInt32(GATEKEEPER_RESPONSE_RETRY);
-                reply->writeInt32(ret);
-            } else {
-                reply->writeInt32(GATEKEEPER_RESPONSE_ERROR);
-            }
-            return OK;
-        }
-        case GET_SECURE_USER_ID: {
-            CHECK_INTERFACE(IGateKeeperService, data, reply);
-            uint32_t uid = data.readInt32();
-            uint64_t sid = getSecureUserId(uid);
-            reply->writeNoException();
-            reply->writeInt64(sid);
-            return OK;
-        }
-        case CLEAR_SECURE_USER_ID: {
-            CHECK_INTERFACE(IGateKeeperService, data, reply);
-            uint32_t uid = data.readInt32();
-            clearSecureUserId(uid);
-            reply->writeNoException();
-            return OK;
-        }
-        case REPORT_DEVICE_SETUP_COMPLETE: {
-            CHECK_INTERFACE(IGateKeeperService, data, reply);
-            reportDeviceSetupComplete();
-            reply->writeNoException();
-            return OK;
-        }
-        default:
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-};
-
-
-}; // namespace android
diff --git a/gatekeeperd/IGateKeeperService.h b/gatekeeperd/IGateKeeperService.h
deleted file mode 100644
index 2816efc..0000000
--- a/gatekeeperd/IGateKeeperService.h
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef IGATEKEEPER_SERVICE_H_
-#define IGATEKEEPER_SERVICE_H_
-
-#include <binder/IInterface.h>
-#include <binder/Parcel.h>
-
-namespace android {
-
-/*
- * This must be kept manually in sync with frameworks/base's IGateKeeperService.aidl
- */
-class IGateKeeperService : public IInterface {
-public:
-    enum {
-        ENROLL = IBinder::FIRST_CALL_TRANSACTION + 0,
-        VERIFY = IBinder::FIRST_CALL_TRANSACTION + 1,
-        VERIFY_CHALLENGE = IBinder::FIRST_CALL_TRANSACTION + 2,
-        GET_SECURE_USER_ID = IBinder::FIRST_CALL_TRANSACTION + 3,
-        CLEAR_SECURE_USER_ID = IBinder::FIRST_CALL_TRANSACTION + 4,
-        REPORT_DEVICE_SETUP_COMPLETE = IBinder::FIRST_CALL_TRANSACTION + 5,
-    };
-
-    enum {
-        GATEKEEPER_RESPONSE_OK = 0,
-        GATEKEEPER_RESPONSE_RETRY = 1,
-        GATEKEEPER_RESPONSE_ERROR = -1,
-    };
-
-    // DECLARE_META_INTERFACE - C++ client interface not needed
-    static const android::String16 descriptor;
-    virtual const android::String16& getInterfaceDescriptor() const;
-    IGateKeeperService() {}
-    virtual ~IGateKeeperService() {}
-
-    /**
-     * Enrolls a password with the GateKeeper. Returns 0 on success, negative on failure.
-     * Returns:
-     * - 0 on success
-     * - A timestamp T > 0 if the call has failed due to throttling and should not
-     *   be reattempted until T milliseconds have elapsed
-     * - -1 on failure
-     */
-    virtual int enroll(uint32_t uid,
-            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
-            const uint8_t *current_password, uint32_t current_password_length,
-            const uint8_t *desired_password, uint32_t desired_password_length,
-            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) = 0;
-
-    /**
-     * Verifies a password previously enrolled with the GateKeeper.
-     * Returns:
-     * - 0 on success
-     * - A timestamp T > 0 if the call has failed due to throttling and should not
-     *   be reattempted until T milliseconds have elapsed
-     * - -1 on failure
-     */
-    virtual int verify(uint32_t uid, const uint8_t *enrolled_password_handle,
-            uint32_t enrolled_password_handle_length,
-            const uint8_t *provided_password, uint32_t provided_password_length,
-            bool *request_reenroll) = 0;
-
-    /**
-     * Verifies a password previously enrolled with the GateKeeper.
-     * Returns:
-     * - 0 on success
-     * - A timestamp T > 0 if the call has failed due to throttling and should not
-     *   be reattempted until T milliseconds have elapsed
-     * - -1 on failure
-     */
-    virtual int verifyChallenge(uint32_t uid, uint64_t challenge,
-            const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
-            const uint8_t *provided_password, uint32_t provided_password_length,
-            uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll) = 0;
-    /**
-     * Returns the secure user ID for the provided android user
-     */
-    virtual uint64_t getSecureUserId(uint32_t uid) = 0;
-
-    /**
-     * Clears the secure user ID associated with the user.
-     */
-    virtual void clearSecureUserId(uint32_t uid) = 0;
-
-    /**
-     * Notifies gatekeeper that device setup has been completed and any potentially still existing
-     * state from before a factory reset can be cleaned up (if it has not been already).
-     */
-    virtual void reportDeviceSetupComplete() = 0;
-};
-
-// ----------------------------------------------------------------------------
-
-class BnGateKeeperService: public BnInterface<IGateKeeperService> {
-public:
-    virtual status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply,
-            uint32_t flags = 0);
-};
-
-} // namespace android
-
-#endif
-
diff --git a/gatekeeperd/SoftGateKeeper.h b/gatekeeperd/SoftGateKeeper.h
deleted file mode 100644
index 5c03dcf..0000000
--- a/gatekeeperd/SoftGateKeeper.h
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- * Copyright 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef SOFT_GATEKEEPER_H_
-#define SOFT_GATEKEEPER_H_
-
-extern "C" {
-#include <openssl/rand.h>
-#include <openssl/sha.h>
-
-#include <crypto_scrypt.h>
-}
-
-#include <android-base/memory.h>
-#include <gatekeeper/gatekeeper.h>
-
-#include <iostream>
-#include <unordered_map>
-#include <memory>
-
-namespace gatekeeper {
-
-struct fast_hash_t {
-    uint64_t salt;
-    uint8_t digest[SHA256_DIGEST_LENGTH];
-};
-
-class SoftGateKeeper : public GateKeeper {
-public:
-    static const uint32_t SIGNATURE_LENGTH_BYTES = 32;
-
-    // scrypt params
-    static const uint64_t N = 16384;
-    static const uint32_t r = 8;
-    static const uint32_t p = 1;
-
-    static const int MAX_UINT_32_CHARS = 11;
-
-    SoftGateKeeper() {
-        key_.reset(new uint8_t[SIGNATURE_LENGTH_BYTES]);
-        memset(key_.get(), 0, SIGNATURE_LENGTH_BYTES);
-    }
-
-    virtual ~SoftGateKeeper() {
-    }
-
-    virtual bool GetAuthTokenKey(const uint8_t** auth_token_key, uint32_t* length) const {
-        if (auth_token_key == NULL || length == NULL) return false;
-        *auth_token_key = key_.get();
-        *length = SIGNATURE_LENGTH_BYTES;
-        return true;
-    }
-
-    virtual void GetPasswordKey(const uint8_t** password_key, uint32_t* length) {
-        if (password_key == NULL || length == NULL) return;
-        *password_key = key_.get();
-        *length = SIGNATURE_LENGTH_BYTES;
-    }
-
-    virtual void ComputePasswordSignature(uint8_t *signature, uint32_t signature_length,
-            const uint8_t *, uint32_t, const uint8_t *password,
-            uint32_t password_length, salt_t salt) const {
-        if (signature == NULL) return;
-        crypto_scrypt(password, password_length, reinterpret_cast<uint8_t *>(&salt),
-                sizeof(salt), N, r, p, signature, signature_length);
-    }
-
-    virtual void GetRandom(void *random, uint32_t requested_length) const {
-        if (random == NULL) return;
-        RAND_pseudo_bytes((uint8_t *) random, requested_length);
-    }
-
-    virtual void ComputeSignature(uint8_t *signature, uint32_t signature_length,
-            const uint8_t *, uint32_t, const uint8_t *, const uint32_t) const {
-        if (signature == NULL) return;
-        memset(signature, 0, signature_length);
-    }
-
-    virtual uint64_t GetMillisecondsSinceBoot() const {
-        struct timespec time;
-        int res = clock_gettime(CLOCK_BOOTTIME, &time);
-        if (res < 0) return 0;
-        return (time.tv_sec * 1000) + (time.tv_nsec / 1000 / 1000);
-    }
-
-    virtual bool IsHardwareBacked() const {
-        return false;
-    }
-
-    virtual bool GetFailureRecord(uint32_t uid, secure_id_t user_id, failure_record_t *record,
-            bool /* secure */) {
-        failure_record_t *stored = &failure_map_[uid];
-        if (user_id != stored->secure_user_id) {
-            stored->secure_user_id = user_id;
-            stored->last_checked_timestamp = 0;
-            stored->failure_counter = 0;
-        }
-        memcpy(record, stored, sizeof(*record));
-        return true;
-    }
-
-    virtual bool ClearFailureRecord(uint32_t uid, secure_id_t user_id, bool /* secure */) {
-        failure_record_t *stored = &failure_map_[uid];
-        stored->secure_user_id = user_id;
-        stored->last_checked_timestamp = 0;
-        stored->failure_counter = 0;
-        return true;
-    }
-
-    virtual bool WriteFailureRecord(uint32_t uid, failure_record_t *record, bool /* secure */) {
-        failure_map_[uid] = *record;
-        return true;
-    }
-
-    fast_hash_t ComputeFastHash(const SizedBuffer &password, uint64_t salt) {
-        fast_hash_t fast_hash;
-        size_t digest_size = password.length + sizeof(salt);
-        std::unique_ptr<uint8_t[]> digest(new uint8_t[digest_size]);
-        memcpy(digest.get(), &salt, sizeof(salt));
-        memcpy(digest.get() + sizeof(salt), password.buffer.get(), password.length);
-
-        SHA256(digest.get(), digest_size, (uint8_t *) &fast_hash.digest);
-
-        fast_hash.salt = salt;
-        return fast_hash;
-    }
-
-    bool VerifyFast(const fast_hash_t &fast_hash, const SizedBuffer &password) {
-        fast_hash_t computed = ComputeFastHash(password, fast_hash.salt);
-        return memcmp(computed.digest, fast_hash.digest, SHA256_DIGEST_LENGTH) == 0;
-    }
-
-    bool DoVerify(const password_handle_t *expected_handle, const SizedBuffer &password) {
-        uint64_t user_id = android::base::get_unaligned<secure_id_t>(&expected_handle->user_id);
-        FastHashMap::const_iterator it = fast_hash_map_.find(user_id);
-        if (it != fast_hash_map_.end() && VerifyFast(it->second, password)) {
-            return true;
-        } else {
-            if (GateKeeper::DoVerify(expected_handle, password)) {
-                uint64_t salt;
-                GetRandom(&salt, sizeof(salt));
-                fast_hash_map_[user_id] = ComputeFastHash(password, salt);
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-private:
-
-    typedef std::unordered_map<uint32_t, failure_record_t> FailureRecordMap;
-    typedef std::unordered_map<uint64_t, fast_hash_t> FastHashMap;
-
-    std::unique_ptr<uint8_t[]> key_;
-    FailureRecordMap failure_map_;
-    FastHashMap fast_hash_map_;
-};
-}
-
-#endif // SOFT_GATEKEEPER_H_
diff --git a/gatekeeperd/SoftGateKeeperDevice.cpp b/gatekeeperd/SoftGateKeeperDevice.cpp
deleted file mode 100644
index f5e2ce6..0000000
--- a/gatekeeperd/SoftGateKeeperDevice.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "SoftGateKeeper.h"
-#include "SoftGateKeeperDevice.h"
-
-namespace android {
-
-int SoftGateKeeperDevice::enroll(uint32_t uid,
-            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
-            const uint8_t *current_password, uint32_t current_password_length,
-            const uint8_t *desired_password, uint32_t desired_password_length,
-            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
-
-    if (enrolled_password_handle == NULL || enrolled_password_handle_length == NULL ||
-            desired_password == NULL || desired_password_length == 0)
-        return -EINVAL;
-
-    // Current password and current password handle go together
-    if (current_password_handle == NULL || current_password_handle_length == 0 ||
-            current_password == NULL || current_password_length == 0) {
-        current_password_handle = NULL;
-        current_password_handle_length = 0;
-        current_password = NULL;
-        current_password_length = 0;
-    }
-
-    SizedBuffer desired_password_buffer(desired_password_length);
-    memcpy(desired_password_buffer.buffer.get(), desired_password, desired_password_length);
-
-    SizedBuffer current_password_handle_buffer(current_password_handle_length);
-    if (current_password_handle) {
-        memcpy(current_password_handle_buffer.buffer.get(), current_password_handle,
-                current_password_handle_length);
-    }
-
-    SizedBuffer current_password_buffer(current_password_length);
-    if (current_password) {
-        memcpy(current_password_buffer.buffer.get(), current_password, current_password_length);
-    }
-
-    EnrollRequest request(uid, &current_password_handle_buffer, &desired_password_buffer,
-            &current_password_buffer);
-    EnrollResponse response;
-
-    impl_->Enroll(request, &response);
-
-    if (response.error == ERROR_RETRY) {
-        return response.retry_timeout;
-    } else if (response.error != ERROR_NONE) {
-        return -EINVAL;
-    }
-
-    *enrolled_password_handle = response.enrolled_password_handle.buffer.release();
-    *enrolled_password_handle_length = response.enrolled_password_handle.length;
-    return 0;
-}
-
-int SoftGateKeeperDevice::verify(uint32_t uid,
-        uint64_t challenge, const uint8_t *enrolled_password_handle,
-        uint32_t enrolled_password_handle_length, const uint8_t *provided_password,
-        uint32_t provided_password_length, uint8_t **auth_token, uint32_t *auth_token_length,
-        bool *request_reenroll) {
-
-    if (enrolled_password_handle == NULL ||
-            provided_password == NULL) {
-        return -EINVAL;
-    }
-
-    SizedBuffer password_handle_buffer(enrolled_password_handle_length);
-    memcpy(password_handle_buffer.buffer.get(), enrolled_password_handle,
-            enrolled_password_handle_length);
-    SizedBuffer provided_password_buffer(provided_password_length);
-    memcpy(provided_password_buffer.buffer.get(), provided_password, provided_password_length);
-
-    VerifyRequest request(uid, challenge, &password_handle_buffer, &provided_password_buffer);
-    VerifyResponse response;
-
-    impl_->Verify(request, &response);
-
-    if (response.error == ERROR_RETRY) {
-        return response.retry_timeout;
-    } else if (response.error != ERROR_NONE) {
-        return -EINVAL;
-    }
-
-    if (auth_token != NULL && auth_token_length != NULL) {
-       *auth_token = response.auth_token.buffer.release();
-       *auth_token_length = response.auth_token.length;
-    }
-
-    if (request_reenroll != NULL) {
-        *request_reenroll = response.request_reenroll;
-    }
-
-    return 0;
-}
-} // namespace android
diff --git a/gatekeeperd/SoftGateKeeperDevice.h b/gatekeeperd/SoftGateKeeperDevice.h
deleted file mode 100644
index e3dc068..0000000
--- a/gatekeeperd/SoftGateKeeperDevice.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef SOFT_GATEKEEPER_DEVICE_H_
-#define SOFT_GATEKEEPER_DEVICE_H_
-
-#include "SoftGateKeeper.h"
-
-#include <memory>
-
-using namespace gatekeeper;
-
-namespace android {
-
-/**
- * Software based GateKeeper implementation
- */
-class SoftGateKeeperDevice {
-public:
-    SoftGateKeeperDevice() {
-        impl_.reset(new SoftGateKeeper());
-    }
-
-   // Wrappers to translate the gatekeeper HAL API to the Kegyuard Messages API.
-
-    /**
-     * Enrolls password_payload, which should be derived from a user selected pin or password,
-     * with the authentication factor private key used only for enrolling authentication
-     * factor data.
-     *
-     * Returns: 0 on success or an error code less than 0 on error.
-     * On error, enrolled_password_handle will not be allocated.
-     */
-    int enroll(uint32_t uid,
-            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
-            const uint8_t *current_password, uint32_t current_password_length,
-            const uint8_t *desired_password, uint32_t desired_password_length,
-            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length);
-
-    /**
-     * Verifies provided_password matches enrolled_password_handle.
-     *
-     * Implementations of this module may retain the result of this call
-     * to attest to the recency of authentication.
-     *
-     * On success, writes the address of a verification token to auth_token,
-     * usable to attest password verification to other trusted services. Clients
-     * may pass NULL for this value.
-     *
-     * Returns: 0 on success or an error code less than 0 on error
-     * On error, verification token will not be allocated
-     */
-    int verify(uint32_t uid, uint64_t challenge,
-            const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
-            const uint8_t *provided_password, uint32_t provided_password_length,
-            uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll);
-private:
-    std::unique_ptr<SoftGateKeeper> impl_;
-};
-
-} // namespace gatekeeper
-
-#endif //SOFT_GATEKEEPER_DEVICE_H_
diff --git a/gatekeeperd/binder/android/service/gatekeeper/GateKeeperResponse.aidl b/gatekeeperd/binder/android/service/gatekeeper/GateKeeperResponse.aidl
new file mode 100644
index 0000000..097bb54
--- /dev/null
+++ b/gatekeeperd/binder/android/service/gatekeeper/GateKeeperResponse.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.service.gatekeeper;
+
+/**
+ * Response object for a GateKeeper verification request.
+ * @hide
+ */
+parcelable GateKeeperResponse cpp_header "gatekeeper/GateKeeperResponse.h";
+
diff --git a/gatekeeperd/binder/android/service/gatekeeper/IGateKeeperService.aidl b/gatekeeperd/binder/android/service/gatekeeper/IGateKeeperService.aidl
new file mode 100644
index 0000000..57adaba
--- /dev/null
+++ b/gatekeeperd/binder/android/service/gatekeeper/IGateKeeperService.aidl
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.service.gatekeeper;
+
+import android.service.gatekeeper.GateKeeperResponse;
+
+/**
+ * Interface for communication with GateKeeper, the
+ * secure password storage daemon.
+ *
+ * This must be kept manually in sync with system/core/gatekeeperd
+ * until AIDL can generate both C++ and Java bindings.
+ *
+ * @hide
+ */
+interface IGateKeeperService {
+    /**
+     * Enrolls a password, returning the handle to the enrollment to be stored locally.
+     * @param uid The Android user ID associated to this enrollment
+     * @param currentPasswordHandle The previously enrolled handle, or null if none
+     * @param currentPassword The previously enrolled plaintext password, or null if none.
+     *                        If provided, must verify against the currentPasswordHandle.
+     * @param desiredPassword The new desired password, for which a handle will be returned
+     *                        upon success.
+     * @return an EnrollResponse or null on failure
+     */
+    GateKeeperResponse enroll(int uid, in @nullable byte[] currentPasswordHandle,
+            in @nullable byte[] currentPassword, in byte[] desiredPassword);
+
+    /**
+     * Verifies an enrolled handle against a provided, plaintext blob.
+     * @param uid The Android user ID associated to this enrollment
+     * @param enrolledPasswordHandle The handle against which the provided password will be
+     *                               verified.
+     * @param The plaintext blob to verify against enrolledPassword.
+     * @return a VerifyResponse, or null on failure.
+     */
+    GateKeeperResponse verify(int uid, in byte[] enrolledPasswordHandle, in byte[] providedPassword);
+
+    /**
+     * Verifies an enrolled handle against a provided, plaintext blob.
+     * @param uid The Android user ID associated to this enrollment
+     * @param challenge a challenge to authenticate agaisnt the device credential. If successful
+     *                  authentication occurs, this value will be written to the returned
+     *                  authentication attestation.
+     * @param enrolledPasswordHandle The handle against which the provided password will be
+     *                               verified.
+     * @param The plaintext blob to verify against enrolledPassword.
+     * @return a VerifyResponse with an attestation, or null on failure.
+     */
+    GateKeeperResponse verifyChallenge(int uid, long challenge, in byte[] enrolledPasswordHandle,
+            in byte[] providedPassword);
+
+    /**
+     * Retrieves the secure identifier for the user with the provided Android ID,
+     * or 0 if none is found.
+     * @param uid the Android user id
+     */
+    long getSecureUserId(int uid);
+
+    /**
+     * Clears secure user id associated with the provided Android ID.
+     * Must be called when password is set to NONE.
+     * @param uid the Android user id.
+     */
+    void clearSecureUserId(int uid);
+
+    /**
+     * Notifies gatekeeper that device setup has been completed and any potentially still existing
+     * state from before a factory reset can be cleaned up (if it has not been already).
+     */
+    void reportDeviceSetupComplete();
+}
diff --git a/gatekeeperd/gatekeeperd.cpp b/gatekeeperd/gatekeeperd.cpp
index 5451819..1d65b1c 100644
--- a/gatekeeperd/gatekeeperd.cpp
+++ b/gatekeeperd/gatekeeperd.cpp
@@ -16,7 +16,8 @@
 
 #define LOG_TAG "gatekeeperd"
 
-#include "IGateKeeperService.h"
+#include <android/service/gatekeeper/BnGateKeeperService.h>
+#include <gatekeeper/GateKeeperResponse.h>
 
 #include <errno.h>
 #include <fcntl.h>
@@ -41,8 +42,6 @@
 #include <utils/Log.h>
 #include <utils/String16.h>
 
-#include "SoftGateKeeperDevice.h"
-
 #include <hidl/HidlSupport.h>
 #include <android/hardware/gatekeeper/1.0/IGatekeeper.h>
 
@@ -52,6 +51,11 @@
 using android::hardware::gatekeeper::V1_0::GatekeeperResponse;
 using android::hardware::Return;
 
+using ::android::binder::Status;
+using ::android::service::gatekeeper::BnGateKeeperService;
+using GKResponse = ::android::service::gatekeeper::GateKeeperResponse;
+using GKResponseCode = ::android::service::gatekeeper::ResponseCode;
+
 namespace android {
 
 static const String16 KEYGUARD_PERMISSION("android.permission.ACCESS_KEYGUARD_SECURE_STORAGE");
@@ -64,9 +68,8 @@
         hw_device = IGatekeeper::getService();
         is_running_gsi = android::base::GetBoolProperty(android::gsi::kGsiBootedProp, false);
 
-        if (hw_device == nullptr) {
-            ALOGW("falling back to software GateKeeper");
-            soft_device.reset(new SoftGateKeeperDevice());
+        if (!hw_device) {
+            LOG(ERROR) << "Could not find Gatekeeper device, which makes me very sad.";
         }
     }
 
@@ -92,7 +95,7 @@
 
         if (mark_cold_boot() && !is_running_gsi) {
             ALOGI("cold boot: clearing state");
-            if (hw_device != nullptr) {
+            if (hw_device) {
                 hw_device->deleteAllUsers([](const GatekeeperResponse &){});
             }
         }
@@ -154,16 +157,16 @@
         return uid;
     }
 
-    virtual int enroll(uint32_t uid,
-            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
-            const uint8_t *current_password, uint32_t current_password_length,
-            const uint8_t *desired_password, uint32_t desired_password_length,
-            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
+#define GK_ERROR *gkResponse = GKResponse::error(), Status::ok()
+
+    Status enroll(int32_t uid, const std::unique_ptr<std::vector<uint8_t>>& currentPasswordHandle,
+                  const std::unique_ptr<std::vector<uint8_t>>& currentPassword,
+                  const std::vector<uint8_t>& desiredPassword, GKResponse* gkResponse) override {
         IPCThreadState* ipc = IPCThreadState::self();
         const int calling_pid = ipc->getCallingPid();
         const int calling_uid = ipc->getCallingUid();
         if (!PermissionCache::checkPermission(KEYGUARD_PERMISSION, calling_pid, calling_uid)) {
-            return PERMISSION_DENIED;
+            return GK_ERROR;
         }
 
         // Make sure to clear any state from before factory reset as soon as a credential is
@@ -171,226 +174,189 @@
         clear_state_if_needed();
 
         // need a desired password to enroll
-        if (desired_password_length == 0) return -EINVAL;
+        if (desiredPassword.size() == 0) return GK_ERROR;
 
-        int ret;
-        if (hw_device != nullptr) {
-            const gatekeeper::password_handle_t *handle =
-                    reinterpret_cast<const gatekeeper::password_handle_t *>(current_password_handle);
+        if (!hw_device) {
+            LOG(ERROR) << "has no HAL to talk to";
+            return GK_ERROR;
+        }
 
-            if (handle != NULL && handle->version != 0 && !handle->hardware_backed) {
-                // handle is being re-enrolled from a software version. HAL probably won't accept
-                // the handle as valid, so we nullify it and enroll from scratch
-                current_password_handle = NULL;
-                current_password_handle_length = 0;
-                current_password = NULL;
-                current_password_length = 0;
+        android::hardware::hidl_vec<uint8_t> curPwdHandle;
+        android::hardware::hidl_vec<uint8_t> curPwd;
+
+        if (currentPasswordHandle && currentPassword) {
+            if (currentPasswordHandle->size() != sizeof(gatekeeper::password_handle_t)) {
+                LOG(INFO) << "Password handle has wrong length";
+                return GK_ERROR;
             }
+            curPwdHandle.setToExternal(const_cast<uint8_t*>(currentPasswordHandle->data()),
+                                       currentPasswordHandle->size());
+            curPwd.setToExternal(const_cast<uint8_t*>(currentPassword->data()),
+                                 currentPassword->size());
+        }
 
-            android::hardware::hidl_vec<uint8_t> curPwdHandle;
-            curPwdHandle.setToExternal(const_cast<uint8_t*>(current_password_handle),
-                                       current_password_handle_length);
-            android::hardware::hidl_vec<uint8_t> curPwd;
-            curPwd.setToExternal(const_cast<uint8_t*>(current_password),
-                                 current_password_length);
-            android::hardware::hidl_vec<uint8_t> newPwd;
-            newPwd.setToExternal(const_cast<uint8_t*>(desired_password),
-                                 desired_password_length);
+        android::hardware::hidl_vec<uint8_t> newPwd;
+        newPwd.setToExternal(const_cast<uint8_t*>(desiredPassword.data()), desiredPassword.size());
 
-            uint32_t hw_uid = adjust_uid(uid);
-            Return<void> hwRes = hw_device->enroll(hw_uid, curPwdHandle, curPwd, newPwd,
-                              [&ret, enrolled_password_handle, enrolled_password_handle_length]
-                                   (const GatekeeperResponse &rsp) {
-                ret = static_cast<int>(rsp.code); // propagate errors
-                if (rsp.code >= GatekeeperStatusCode::STATUS_OK) {
-                    if (enrolled_password_handle != nullptr &&
-                        enrolled_password_handle_length != nullptr) {
-                        *enrolled_password_handle = new uint8_t[rsp.data.size()];
-                        *enrolled_password_handle_length = rsp.data.size();
-                        memcpy(*enrolled_password_handle, rsp.data.data(),
-                               *enrolled_password_handle_length);
+        uint32_t hw_uid = adjust_uid(uid);
+        Return<void> hwRes = hw_device->enroll(
+                hw_uid, curPwdHandle, curPwd, newPwd, [&gkResponse](const GatekeeperResponse& rsp) {
+                    if (rsp.code >= GatekeeperStatusCode::STATUS_OK) {
+                        *gkResponse = GKResponse::ok({rsp.data.begin(), rsp.data.end()});
+                    } else if (rsp.code == GatekeeperStatusCode::ERROR_RETRY_TIMEOUT &&
+                               rsp.timeout > 0) {
+                        *gkResponse = GKResponse::retry(rsp.timeout);
+                    } else {
+                        *gkResponse = GKResponse::error();
                     }
-                    ret = 0; // all success states are reported as 0
-                } else if (rsp.code == GatekeeperStatusCode::ERROR_RETRY_TIMEOUT && rsp.timeout > 0) {
-                    ret = rsp.timeout;
-                }
-            });
-            if (!hwRes.isOk()) {
-                ALOGE("enroll transaction failed\n");
-                ret = -1;
+                });
+        if (!hwRes.isOk()) {
+            LOG(ERROR) << "enroll transaction failed";
+            return GK_ERROR;
+        }
+
+        if (gkResponse->response_code() == GKResponseCode::OK && !gkResponse->should_reenroll()) {
+            if (gkResponse->payload().size() != sizeof(gatekeeper::password_handle_t)) {
+                LOG(ERROR) << "HAL returned password handle of invalid length "
+                           << gkResponse->payload().size();
+                return GK_ERROR;
             }
-        } else {
-            ret = soft_device->enroll(uid,
-                    current_password_handle, current_password_handle_length,
-                    current_password, current_password_length,
-                    desired_password, desired_password_length,
-                    enrolled_password_handle, enrolled_password_handle_length);
-        }
 
-        if (ret == GATEKEEPER_RESPONSE_OK && (*enrolled_password_handle == nullptr ||
-            *enrolled_password_handle_length != sizeof(password_handle_t))) {
-            ret = GATEKEEPER_RESPONSE_ERROR;
-            ALOGE("HAL: password_handle=%p size_of_handle=%" PRIu32 "\n",
-                  *enrolled_password_handle, *enrolled_password_handle_length);
-        }
-
-        if (ret == GATEKEEPER_RESPONSE_OK) {
-            gatekeeper::password_handle_t *handle =
-                    reinterpret_cast<gatekeeper::password_handle_t *>(*enrolled_password_handle);
+            const gatekeeper::password_handle_t* handle =
+                    reinterpret_cast<const gatekeeper::password_handle_t*>(
+                            gkResponse->payload().data());
             store_sid(uid, handle->user_id);
-            bool rr;
 
+            GKResponse verifyResponse;
             // immediately verify this password so we don't ask the user to enter it again
             // if they just created it.
-            verify(uid, *enrolled_password_handle, sizeof(password_handle_t), desired_password,
-                    desired_password_length, &rr);
+            auto status = verify(uid, gkResponse->payload(), desiredPassword, &verifyResponse);
+            if (!status.isOk() || verifyResponse.response_code() != GKResponseCode::OK) {
+                LOG(ERROR) << "Failed to verify password after enrolling";
+            }
         }
 
-        return ret;
+        return Status::ok();
     }
 
-    virtual int verify(uint32_t uid,
-            const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
-            const uint8_t *provided_password, uint32_t provided_password_length, bool *request_reenroll) {
-        uint8_t *auth_token = nullptr;
-        uint32_t auth_token_length;
-        int ret = verifyChallenge(uid, 0, enrolled_password_handle, enrolled_password_handle_length,
-                provided_password, provided_password_length,
-                &auth_token, &auth_token_length, request_reenroll);
-        delete [] auth_token;
-        return ret;
+    Status verify(int32_t uid, const ::std::vector<uint8_t>& enrolledPasswordHandle,
+                  const ::std::vector<uint8_t>& providedPassword, GKResponse* gkResponse) override {
+        return verifyChallenge(uid, 0 /* challenge */, enrolledPasswordHandle, providedPassword,
+                               gkResponse);
     }
 
-    virtual int verifyChallenge(uint32_t uid, uint64_t challenge,
-            const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
-            const uint8_t *provided_password, uint32_t provided_password_length,
-            uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll) {
+    Status verifyChallenge(int32_t uid, int64_t challenge,
+                           const std::vector<uint8_t>& enrolledPasswordHandle,
+                           const std::vector<uint8_t>& providedPassword,
+                           GKResponse* gkResponse) override {
         IPCThreadState* ipc = IPCThreadState::self();
         const int calling_pid = ipc->getCallingPid();
         const int calling_uid = ipc->getCallingUid();
         if (!PermissionCache::checkPermission(KEYGUARD_PERMISSION, calling_pid, calling_uid)) {
-            return PERMISSION_DENIED;
+            return GK_ERROR;
         }
 
         // can't verify if we're missing either param
-        if (enrolled_password_handle == nullptr || provided_password == nullptr ||
-            enrolled_password_handle_length == 0 || provided_password_length == 0)
-            return -EINVAL;
+        if (enrolledPasswordHandle.size() == 0 || providedPassword.size() == 0) return GK_ERROR;
 
-        int ret;
-        if (hw_device != nullptr) {
-            const gatekeeper::password_handle_t *handle =
-                    reinterpret_cast<const gatekeeper::password_handle_t *>(enrolled_password_handle);
-            // handle version 0 does not have hardware backed flag, and thus cannot be upgraded to
-            // a HAL if there was none before
-            if (handle->version == 0 || handle->hardware_backed) {
-                uint32_t hw_uid = adjust_uid(uid);
-                android::hardware::hidl_vec<uint8_t> curPwdHandle;
-                curPwdHandle.setToExternal(const_cast<uint8_t*>(enrolled_password_handle),
-                                           enrolled_password_handle_length);
-                android::hardware::hidl_vec<uint8_t> enteredPwd;
-                enteredPwd.setToExternal(const_cast<uint8_t*>(provided_password),
-                                         provided_password_length);
-                Return<void> hwRes = hw_device->verify(hw_uid, challenge, curPwdHandle, enteredPwd,
-                                        [&ret, request_reenroll, auth_token, auth_token_length]
-                                             (const GatekeeperResponse &rsp) {
-                    ret = static_cast<int>(rsp.code); // propagate errors
-                    if (auth_token != nullptr && auth_token_length != nullptr &&
-                        rsp.code >= GatekeeperStatusCode::STATUS_OK) {
-                        *auth_token = new uint8_t[rsp.data.size()];
-                        *auth_token_length = rsp.data.size();
-                        memcpy(*auth_token, rsp.data.data(), *auth_token_length);
-                        if (request_reenroll != nullptr) {
-                            *request_reenroll = (rsp.code == GatekeeperStatusCode::STATUS_REENROLL);
-                        }
-                        ret = 0; // all success states are reported as 0
-                    } else if (rsp.code == GatekeeperStatusCode::ERROR_RETRY_TIMEOUT &&
-                               rsp.timeout > 0) {
-                        ret = rsp.timeout;
+        if (!hw_device) return GK_ERROR;
+
+        if (enrolledPasswordHandle.size() != sizeof(gatekeeper::password_handle_t)) {
+            LOG(INFO) << "Password handle has wrong length";
+            return GK_ERROR;
+        }
+        const gatekeeper::password_handle_t* handle =
+                reinterpret_cast<const gatekeeper::password_handle_t*>(
+                        enrolledPasswordHandle.data());
+
+        uint32_t hw_uid = adjust_uid(uid);
+        android::hardware::hidl_vec<uint8_t> curPwdHandle;
+        curPwdHandle.setToExternal(const_cast<uint8_t*>(enrolledPasswordHandle.data()),
+                                   enrolledPasswordHandle.size());
+        android::hardware::hidl_vec<uint8_t> enteredPwd;
+        enteredPwd.setToExternal(const_cast<uint8_t*>(providedPassword.data()),
+                                 providedPassword.size());
+
+        Return<void> hwRes = hw_device->verify(
+                hw_uid, challenge, curPwdHandle, enteredPwd,
+                [&gkResponse](const GatekeeperResponse& rsp) {
+                    if (rsp.code >= GatekeeperStatusCode::STATUS_OK) {
+                        *gkResponse = GKResponse::ok(
+                                {rsp.data.begin(), rsp.data.end()},
+                                rsp.code == GatekeeperStatusCode::STATUS_REENROLL /* reenroll */);
+                    } else if (rsp.code == GatekeeperStatusCode::ERROR_RETRY_TIMEOUT) {
+                        *gkResponse = GKResponse::retry(rsp.timeout);
+                    } else {
+                        *gkResponse = GKResponse::error();
                     }
                 });
-                if (!hwRes.isOk()) {
-                    ALOGE("verify transaction failed\n");
-                    ret = -1;
-                }
-            } else {
-                // upgrade scenario, a HAL has been added to this device where there was none before
-                SoftGateKeeperDevice soft_dev;
-                ret = soft_dev.verify(uid, challenge,
-                    enrolled_password_handle, enrolled_password_handle_length,
-                    provided_password, provided_password_length, auth_token, auth_token_length,
-                    request_reenroll);
 
-                if (ret == 0) {
-                    // success! re-enroll with HAL
-                    if (request_reenroll != nullptr) *request_reenroll = true;
+        if (!hwRes.isOk()) {
+            LOG(ERROR) << "verify transaction failed";
+            return GK_ERROR;
+        }
+
+        if (gkResponse->response_code() == GKResponseCode::OK) {
+            if (gkResponse->payload().size() != 0) {
+                sp<IServiceManager> sm = defaultServiceManager();
+                sp<IBinder> binder = sm->getService(String16("android.security.keystore"));
+                sp<security::keystore::IKeystoreService> service =
+                        interface_cast<security::keystore::IKeystoreService>(binder);
+
+                if (service) {
+                    int result = 0;
+                    auto binder_result = service->addAuthToken(gkResponse->payload(), &result);
+                    if (!binder_result.isOk() ||
+                        !keystore::KeyStoreServiceReturnCode(result).isOk()) {
+                        LOG(ERROR) << "Failure sending auth token to KeyStore: " << result;
+                    }
+                } else {
+                    LOG(ERROR) << "Cannot deliver auth token. Unable to communicate with Keystore.";
                 }
             }
-        } else {
-            ret = soft_device->verify(uid, challenge,
-                enrolled_password_handle, enrolled_password_handle_length,
-                provided_password, provided_password_length, auth_token, auth_token_length,
-                request_reenroll);
+
+            maybe_store_sid(uid, handle->user_id);
         }
 
-        if (ret == 0 && *auth_token != NULL && *auth_token_length > 0) {
-            // TODO: cache service?
-            sp<IServiceManager> sm = defaultServiceManager();
-            sp<IBinder> binder = sm->getService(String16("android.security.keystore"));
-            sp<security::keystore::IKeystoreService> service =
-                    interface_cast<security::keystore::IKeystoreService>(binder);
-            if (service != NULL) {
-                std::vector<uint8_t> auth_token_vector(*auth_token,
-                                                       (*auth_token) + *auth_token_length);
-                int result = 0;
-                auto binder_result = service->addAuthToken(auth_token_vector, &result);
-                if (!binder_result.isOk() || !keystore::KeyStoreServiceReturnCode(result).isOk()) {
-                    ALOGE("Failure sending auth token to KeyStore: %" PRId32, result);
-                }
-            } else {
-                ALOGE("Unable to communicate with KeyStore");
-            }
-        }
-
-        if (ret == 0) {
-            maybe_store_sid(uid, reinterpret_cast<const gatekeeper::password_handle_t *>(
-                        enrolled_password_handle)->user_id);
-        }
-
-        return ret;
+        return Status::ok();
     }
 
-    virtual uint64_t getSecureUserId(uint32_t uid) { return read_sid(uid); }
+    Status getSecureUserId(int32_t uid, int64_t* sid) override {
+        *sid = read_sid(uid);
+        return Status::ok();
+    }
 
-    virtual void clearSecureUserId(uint32_t uid) {
+    Status clearSecureUserId(int32_t uid) override {
         IPCThreadState* ipc = IPCThreadState::self();
         const int calling_pid = ipc->getCallingPid();
         const int calling_uid = ipc->getCallingUid();
         if (!PermissionCache::checkPermission(KEYGUARD_PERMISSION, calling_pid, calling_uid)) {
             ALOGE("%s: permission denied for [%d:%d]", __func__, calling_pid, calling_uid);
-            return;
+            return Status::ok();
         }
         clear_sid(uid);
 
-        if (hw_device != nullptr) {
+        if (hw_device) {
             uint32_t hw_uid = adjust_uid(uid);
             hw_device->deleteUser(hw_uid, [] (const GatekeeperResponse &){});
         }
+        return Status::ok();
     }
 
-    virtual void reportDeviceSetupComplete() {
+    Status reportDeviceSetupComplete() override {
         IPCThreadState* ipc = IPCThreadState::self();
         const int calling_pid = ipc->getCallingPid();
         const int calling_uid = ipc->getCallingUid();
         if (!PermissionCache::checkPermission(KEYGUARD_PERMISSION, calling_pid, calling_uid)) {
             ALOGE("%s: permission denied for [%d:%d]", __func__, calling_pid, calling_uid);
-            return;
+            return Status::ok();
         }
 
         clear_state_if_needed();
+        return Status::ok();
     }
 
-    virtual status_t dump(int fd, const Vector<String16> &) {
+    status_t dump(int fd, const Vector<String16>&) override {
         IPCThreadState* ipc = IPCThreadState::self();
         const int pid = ipc->getCallingPid();
         const int uid = ipc->getCallingUid();
@@ -411,7 +377,6 @@
 
 private:
     sp<IGatekeeper> hw_device;
-    std::unique_ptr<SoftGateKeeperDevice> soft_device;
 
     bool clear_state_if_needed_done;
     bool is_running_gsi;
diff --git a/gatekeeperd/include/gatekeeper/GateKeeperResponse.h b/gatekeeperd/include/gatekeeper/GateKeeperResponse.h
new file mode 100644
index 0000000..99fff02
--- /dev/null
+++ b/gatekeeperd/include/gatekeeper/GateKeeperResponse.h
@@ -0,0 +1,85 @@
+/*
+**
+** Copyright 2019, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#ifndef GATEKEEPERD_INCLUDE_GATEKEEPER_GATEKEEPERRESPONSE_H_
+#define GATEKEEPERD_INCLUDE_GATEKEEPER_GATEKEEPERRESPONSE_H_
+
+#include <binder/Parcelable.h>
+
+namespace android {
+namespace service {
+namespace gatekeeper {
+
+enum class ResponseCode : int32_t {
+    ERROR = -1,
+    OK = 0,
+    RETRY = 1,
+};
+
+class GateKeeperResponse : public ::android::Parcelable {
+    GateKeeperResponse(ResponseCode response_code, int32_t timeout = 0,
+                       std::vector<uint8_t> payload = {}, bool should_reenroll = false)
+        : response_code_(response_code),
+          timeout_(timeout),
+          payload_(std::move(payload)),
+          should_reenroll_(should_reenroll) {}
+
+  public:
+    GateKeeperResponse() = default;
+    GateKeeperResponse(GateKeeperResponse&&) = default;
+    GateKeeperResponse(const GateKeeperResponse&) = default;
+    GateKeeperResponse& operator=(GateKeeperResponse&&) = default;
+
+    static GateKeeperResponse error() { return GateKeeperResponse(ResponseCode::ERROR); }
+    static GateKeeperResponse retry(int32_t timeout) {
+        return GateKeeperResponse(ResponseCode::RETRY, timeout);
+    }
+    static GateKeeperResponse ok(std::vector<uint8_t> payload, bool reenroll = false) {
+        return GateKeeperResponse(ResponseCode::OK, 0, std::move(payload), reenroll);
+    }
+
+    status_t readFromParcel(const Parcel* in) override;
+    status_t writeToParcel(Parcel* out) const override;
+
+    const std::vector<uint8_t>& payload() const { return payload_; }
+
+    void payload(std::vector<uint8_t> payload) { payload_ = payload; }
+
+    ResponseCode response_code() const { return response_code_; }
+
+    void response_code(ResponseCode response_code) { response_code_ = response_code; }
+
+    bool should_reenroll() const { return should_reenroll_; }
+
+    void should_reenroll(bool should_reenroll) { should_reenroll_ = should_reenroll; }
+
+    int32_t timeout() const { return timeout_; }
+
+    void timeout(int32_t timeout) { timeout_ = timeout; }
+
+  private:
+    ResponseCode response_code_;
+    int32_t timeout_;
+    std::vector<uint8_t> payload_;
+    bool should_reenroll_;
+};
+
+}  // namespace gatekeeper
+}  // namespace service
+}  // namespace android
+
+#endif  // GATEKEEPERD_INCLUDE_GATEKEEPER_GATEKEEPERRESPONSE_H_
diff --git a/gatekeeperd/tests/Android.bp b/gatekeeperd/tests/Android.bp
deleted file mode 100644
index d4cf93b..0000000
--- a/gatekeeperd/tests/Android.bp
+++ /dev/null
@@ -1,34 +0,0 @@
-//
-// Copyright (C) 2015 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_test {
-    name: "gatekeeperd-unit-tests",
-
-    cflags: [
-        "-g",
-        "-Wall",
-        "-Werror",
-        "-Wno-missing-field-initializers",
-    ],
-    shared_libs: [
-        "libgatekeeper",
-        "libcrypto",
-        "libbase",
-    ],
-    static_libs: ["libscrypt_static"],
-    include_dirs: ["external/scrypt/lib/crypto"],
-    srcs: ["gatekeeper_test.cpp"],
-}
diff --git a/gatekeeperd/tests/gatekeeper_test.cpp b/gatekeeperd/tests/gatekeeper_test.cpp
deleted file mode 100644
index 100375f..0000000
--- a/gatekeeperd/tests/gatekeeper_test.cpp
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
- * Copyright 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <arpa/inet.h>
-#include <iostream>
-
-#include <gtest/gtest.h>
-#include <hardware/hw_auth_token.h>
-
-#include "../SoftGateKeeper.h"
-
-using ::gatekeeper::SizedBuffer;
-using ::testing::Test;
-using ::gatekeeper::EnrollRequest;
-using ::gatekeeper::EnrollResponse;
-using ::gatekeeper::VerifyRequest;
-using ::gatekeeper::VerifyResponse;
-using ::gatekeeper::SoftGateKeeper;
-using ::gatekeeper::secure_id_t;
-
-static void do_enroll(SoftGateKeeper &gatekeeper, EnrollResponse *response) {
-    SizedBuffer password;
-
-    password.buffer.reset(new uint8_t[16]);
-    password.length = 16;
-    memset(password.buffer.get(), 0, 16);
-    EnrollRequest request(0, NULL, &password, NULL);
-
-    gatekeeper.Enroll(request, response);
-}
-
-TEST(GateKeeperTest, EnrollSuccess) {
-    SoftGateKeeper gatekeeper;
-    EnrollResponse response;
-    do_enroll(gatekeeper, &response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, response.error);
-}
-
-TEST(GateKeeperTest, EnrollBogusData) {
-    SoftGateKeeper gatekeeper;
-    SizedBuffer password;
-    EnrollResponse response;
-
-    EnrollRequest request(0, NULL, &password, NULL);
-
-    gatekeeper.Enroll(request, &response);
-
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_INVALID, response.error);
-}
-
-TEST(GateKeeperTest, VerifySuccess) {
-    SoftGateKeeper gatekeeper;
-    SizedBuffer provided_password;
-    EnrollResponse enroll_response;
-
-    provided_password.buffer.reset(new uint8_t[16]);
-    provided_password.length = 16;
-    memset(provided_password.buffer.get(), 0, 16);
-
-    do_enroll(gatekeeper, &enroll_response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, enroll_response.error);
-    VerifyRequest request(0, 1, &enroll_response.enrolled_password_handle,
-            &provided_password);
-    VerifyResponse response;
-
-    gatekeeper.Verify(request, &response);
-
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, response.error);
-
-    hw_auth_token_t *auth_token =
-        reinterpret_cast<hw_auth_token_t *>(response.auth_token.buffer.get());
-
-    ASSERT_EQ((uint32_t) HW_AUTH_PASSWORD, ntohl(auth_token->authenticator_type));
-    ASSERT_EQ((uint64_t) 1, auth_token->challenge);
-    ASSERT_NE(~((uint32_t) 0), auth_token->timestamp);
-    ASSERT_NE((uint64_t) 0, auth_token->user_id);
-    ASSERT_NE((uint64_t) 0, auth_token->authenticator_id);
-}
-
-TEST(GateKeeperTest, TrustedReEnroll) {
-    SoftGateKeeper gatekeeper;
-    SizedBuffer provided_password;
-    EnrollResponse enroll_response;
-    SizedBuffer password_handle;
-
-    // do_enroll enrolls an all 0 password
-    provided_password.buffer.reset(new uint8_t[16]);
-    provided_password.length = 16;
-    memset(provided_password.buffer.get(), 0, 16);
-    do_enroll(gatekeeper, &enroll_response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, enroll_response.error);
-
-    // keep a copy of the handle
-    password_handle.buffer.reset(new uint8_t[enroll_response.enrolled_password_handle.length]);
-    password_handle.length = enroll_response.enrolled_password_handle.length;
-    memcpy(password_handle.buffer.get(), enroll_response.enrolled_password_handle.buffer.get(),
-            password_handle.length);
-
-    // verify first password
-    VerifyRequest request(0, 0, &enroll_response.enrolled_password_handle,
-            &provided_password);
-    VerifyResponse response;
-    gatekeeper.Verify(request, &response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, response.error);
-    hw_auth_token_t *auth_token =
-        reinterpret_cast<hw_auth_token_t *>(response.auth_token.buffer.get());
-
-    secure_id_t secure_id = auth_token->user_id;
-
-    // enroll new password
-    provided_password.buffer.reset(new uint8_t[16]);
-    provided_password.length = 16;
-    memset(provided_password.buffer.get(), 0, 16);
-    SizedBuffer password;
-    password.buffer.reset(new uint8_t[16]);
-    memset(password.buffer.get(), 1, 16);
-    password.length = 16;
-    EnrollRequest enroll_request(0, &password_handle, &password, &provided_password);
-    gatekeeper.Enroll(enroll_request, &enroll_response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, enroll_response.error);
-
-    // verify new password
-    password.buffer.reset(new uint8_t[16]);
-    memset(password.buffer.get(), 1, 16);
-    password.length = 16;
-    VerifyRequest new_request(0, 0, &enroll_response.enrolled_password_handle,
-            &password);
-    gatekeeper.Verify(new_request, &response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, response.error);
-    ASSERT_EQ(secure_id,
-        reinterpret_cast<hw_auth_token_t *>(response.auth_token.buffer.get())->user_id);
-}
-
-
-TEST(GateKeeperTest, UntrustedReEnroll) {
-    SoftGateKeeper gatekeeper;
-    SizedBuffer provided_password;
-    EnrollResponse enroll_response;
-
-    // do_enroll enrolls an all 0 password
-    provided_password.buffer.reset(new uint8_t[16]);
-    provided_password.length = 16;
-    memset(provided_password.buffer.get(), 0, 16);
-    do_enroll(gatekeeper, &enroll_response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, enroll_response.error);
-
-    // verify first password
-    VerifyRequest request(0, 0, &enroll_response.enrolled_password_handle,
-            &provided_password);
-    VerifyResponse response;
-    gatekeeper.Verify(request, &response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, response.error);
-    hw_auth_token_t *auth_token =
-        reinterpret_cast<hw_auth_token_t *>(response.auth_token.buffer.get());
-
-    secure_id_t secure_id = auth_token->user_id;
-
-    // enroll new password
-    SizedBuffer password;
-    password.buffer.reset(new uint8_t[16]);
-    memset(password.buffer.get(), 1, 16);
-    password.length = 16;
-    EnrollRequest enroll_request(0, NULL, &password, NULL);
-    gatekeeper.Enroll(enroll_request, &enroll_response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, enroll_response.error);
-
-    // verify new password
-    password.buffer.reset(new uint8_t[16]);
-    memset(password.buffer.get(), 1, 16);
-    password.length = 16;
-    VerifyRequest new_request(0, 0, &enroll_response.enrolled_password_handle,
-            &password);
-    gatekeeper.Verify(new_request, &response);
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_NONE, response.error);
-    ASSERT_NE(secure_id,
-        reinterpret_cast<hw_auth_token_t *>(response.auth_token.buffer.get())->user_id);
-}
-
-
-TEST(GateKeeperTest, VerifyBogusData) {
-    SoftGateKeeper gatekeeper;
-    SizedBuffer provided_password;
-    SizedBuffer password_handle;
-    VerifyResponse response;
-
-    VerifyRequest request(0, 0, &provided_password, &password_handle);
-
-    gatekeeper.Verify(request, &response);
-
-    ASSERT_EQ(::gatekeeper::gatekeeper_error_t::ERROR_INVALID, response.error);
-}
diff --git a/healthd/Android.bp b/healthd/Android.bp
index 2cf6be9..14d46b3 100644
--- a/healthd/Android.bp
+++ b/healthd/Android.bp
@@ -17,6 +17,10 @@
     shared_libs: [
         "libutils",
         "libbase",
+
+        // Need latest HealthInfo definition from headers of this shared
+        // library. Clients don't need to link to this.
+        "android.hardware.health@2.1",
     ],
     header_libs: ["libhealthd_headers"],
     export_header_lib_headers: ["libhealthd_headers"],
@@ -42,8 +46,6 @@
         "libbase",
         "libcutils",
         "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
         "liblog",
         "libutils",
         "android.hardware.health@2.0",
@@ -87,6 +89,7 @@
 
 cc_library_static {
     name: "libhealthd_charger_nops",
+    recovery_available: true,
 
     srcs: [
         "healthd_mode_charger_nops.cpp",
@@ -102,11 +105,138 @@
     ],
 
     static_libs: [
-        "android.hardware.health@2.0-impl",
+        "libhealthloop",
+        "libhealth2impl",
     ],
 
     shared_libs: [
-        "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
         "libutils",
     ],
 }
+
+sysprop_library {
+    name: "charger_sysprop",
+    recovery_available: true,
+    srcs: ["charger.sysprop"],
+    property_owner: "Platform",
+    api_packages: ["android.sysprop"],
+}
+
+cc_library_static {
+    name: "libhealthd_draw",
+    export_include_dirs: ["."],
+    static_libs: [
+        "libcharger_sysprop",
+        "libminui",
+    ],
+    shared_libs: [
+        "libbase",
+    ],
+    header_libs: ["libbatteryservice_headers"],
+
+    srcs: ["healthd_draw.cpp"],
+}
+
+cc_library_static {
+    name: "libhealthd_charger",
+    local_include_dirs: ["include"],
+    export_include_dirs: [".", "include"],
+
+    static_libs: [
+        "android.hardware.health@1.0-convert",
+        "libcharger_sysprop",
+        "libhealthd_draw",
+        "libhealthloop",
+        "libhealth2impl",
+        "libminui",
+    ],
+
+    shared_libs: [
+        "android.hardware.health@2.1",
+        "libbase",
+        "libcutils",
+        "liblog",
+        "libpng",
+        "libsuspend",
+        "libutils",
+    ],
+
+    srcs: [
+        "healthd_mode_charger.cpp",
+        "AnimationParser.cpp",
+    ],
+}
+
+cc_defaults {
+    name: "charger_defaults",
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+
+    shared_libs: [
+        // common
+        "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
+        "libbase",
+        "libcutils",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+
+        // system charger only
+        "libpng",
+    ],
+
+    static_libs: [
+        // common
+        "android.hardware.health@1.0-convert",
+        "libbatterymonitor",
+        "libcharger_sysprop",
+        "libhealthd_charger_nops",
+        "libhealthloop",
+        "libhealth2impl",
+
+        // system charger only
+        "libhealthd_draw",
+        "libhealthd_charger",
+        "libminui",
+        "libsuspend",
+    ],
+}
+
+cc_binary {
+    name: "charger",
+    defaults: ["charger_defaults"],
+    recovery_available: true,
+    srcs: [
+        "charger.cpp",
+        "charger_utils.cpp",
+    ],
+
+    target: {
+        recovery: {
+            // No UI and libsuspend for recovery charger.
+            cflags: [
+                "-DCHARGER_FORCE_NO_UI=1",
+            ],
+            exclude_shared_libs: [
+                "libpng",
+            ],
+            exclude_static_libs: [
+                "libhealthd_draw",
+                "libhealthd_charger",
+                "libminui",
+                "libsuspend",
+            ],
+        }
+    }
+}
+
+cc_test {
+    name: "charger_test",
+    defaults: ["charger_defaults"],
+    srcs: ["charger_test.cpp"],
+}
diff --git a/healthd/Android.mk b/healthd/Android.mk
index 05123af..4b09cf8 100644
--- a/healthd/Android.mk
+++ b/healthd/Android.mk
@@ -2,189 +2,10 @@
 
 LOCAL_PATH := $(call my-dir)
 
-### libhealthd_draw ###
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libhealthd_draw
-
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
-LOCAL_STATIC_LIBRARIES := libminui
-LOCAL_SHARED_LIBRARIES := libbase
-LOCAL_SRC_FILES := healthd_draw.cpp
-
-ifneq ($(TARGET_HEALTHD_DRAW_SPLIT_SCREEN),)
-LOCAL_CFLAGS += -DHEALTHD_DRAW_SPLIT_SCREEN=$(TARGET_HEALTHD_DRAW_SPLIT_SCREEN)
-else
-LOCAL_CFLAGS += -DHEALTHD_DRAW_SPLIT_SCREEN=0
-endif
-
-ifneq ($(TARGET_HEALTHD_DRAW_SPLIT_OFFSET),)
-LOCAL_CFLAGS += -DHEALTHD_DRAW_SPLIT_OFFSET=$(TARGET_HEALTHD_DRAW_SPLIT_OFFSET)
-else
-LOCAL_CFLAGS += -DHEALTHD_DRAW_SPLIT_OFFSET=0
-endif
-
-LOCAL_HEADER_LIBRARIES := libbatteryservice_headers
-
-include $(BUILD_STATIC_LIBRARY)
-
-### libhealthd_charger ###
-include $(CLEAR_VARS)
-
-LOCAL_CFLAGS := -Werror
-ifeq ($(strip $(BOARD_CHARGER_DISABLE_INIT_BLANK)),true)
-LOCAL_CFLAGS += -DCHARGER_DISABLE_INIT_BLANK
-endif
-ifeq ($(strip $(BOARD_CHARGER_ENABLE_SUSPEND)),true)
-LOCAL_CFLAGS += -DCHARGER_ENABLE_SUSPEND
-endif
-
-LOCAL_SRC_FILES := \
-    healthd_mode_charger.cpp \
-    AnimationParser.cpp
-
-LOCAL_MODULE := libhealthd_charger
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-LOCAL_EXPORT_C_INCLUDE_DIRS := \
-    $(LOCAL_PATH) \
-    $(LOCAL_PATH)/include
-
-LOCAL_STATIC_LIBRARIES := \
-    android.hardware.health@2.0-impl \
-    android.hardware.health@1.0-convert \
-    libhealthstoragedefault \
-    libhealthd_draw \
-    libminui \
-
-LOCAL_SHARED_LIBRARIES := \
-    android.hardware.health@2.0 \
-    libbase \
-    libcutils \
-    liblog \
-    libpng \
-    libutils \
-
-ifeq ($(strip $(BOARD_CHARGER_ENABLE_SUSPEND)),true)
-LOCAL_SHARED_LIBRARIES += libsuspend
-endif
-
-include $(BUILD_STATIC_LIBRARY)
-
-### charger ###
-include $(CLEAR_VARS)
 ifeq ($(strip $(BOARD_CHARGER_NO_UI)),true)
 LOCAL_CHARGER_NO_UI := true
 endif
 
-LOCAL_SRC_FILES := \
-    charger.cpp \
-
-LOCAL_MODULE := charger
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-
-LOCAL_CFLAGS := -Werror
-ifeq ($(strip $(LOCAL_CHARGER_NO_UI)),true)
-LOCAL_CFLAGS += -DCHARGER_NO_UI
-endif
-
-CHARGER_STATIC_LIBRARIES := \
-    android.hardware.health@2.0-impl \
-    android.hardware.health@1.0-convert \
-    libbinderthreadstate \
-    libhidltransport \
-    libhidlbase \
-    libhealthstoragedefault \
-    libvndksupport \
-    libhealthd_charger \
-    libhealthd_charger_nops \
-    libhealthd_draw \
-    libbatterymonitor \
-
-CHARGER_SHARED_LIBRARIES := \
-    android.hardware.health@2.0 \
-    libbase \
-    libcutils \
-    libjsoncpp \
-    libprocessgroup \
-    liblog \
-    libutils \
-
-ifneq ($(strip $(LOCAL_CHARGER_NO_UI)),true)
-CHARGER_STATIC_LIBRARIES += libminui
-CHARGER_SHARED_LIBRARIES += libpng
-endif
-
-ifeq ($(strip $(BOARD_CHARGER_ENABLE_SUSPEND)),true)
-CHARGER_SHARED_LIBRARIES += libsuspend
-endif
-
-LOCAL_STATIC_LIBRARIES := $(CHARGER_STATIC_LIBRARIES)
-LOCAL_SHARED_LIBRARIES := $(CHARGER_SHARED_LIBRARIES)
-
-LOCAL_HAL_STATIC_LIBRARIES := libhealthd
-
-# Symlink /charger to /system/bin/charger
-LOCAL_POST_INSTALL_CMD := $(hide) mkdir -p $(TARGET_ROOT_OUT) \
-    && ln -sf /system/bin/charger $(TARGET_ROOT_OUT)/charger
-
-include $(BUILD_EXECUTABLE)
-
-### charger.recovery ###
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
-    charger.cpp \
-
-LOCAL_MODULE := charger.recovery
-LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/bin
-LOCAL_MODULE_STEM := charger
-
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-LOCAL_CFLAGS := -Wall -Werror
-LOCAL_CFLAGS += -DCHARGER_NO_UI
-
-# charger.recovery doesn't link against libhealthd_{charger,draw} or libminui, since it doesn't need
-# any UI support.
-LOCAL_STATIC_LIBRARIES := \
-    android.hardware.health@2.0-impl \
-    android.hardware.health@1.0-convert \
-    libbinderthreadstate \
-    libhidltransport \
-    libhidlbase \
-    libhealthstoragedefault \
-    libvndksupport \
-    libhealthd_charger_nops \
-    libbatterymonitor \
-
-# These shared libs will be installed to recovery image because of the dependency in `recovery`
-# module.
-LOCAL_SHARED_LIBRARIES := \
-    android.hardware.health@2.0 \
-    libbase \
-    libcutils \
-    liblog \
-    libutils \
-
-# The use of LOCAL_HAL_STATIC_LIBRARIES prevents from building this module with Android.bp.
-LOCAL_HAL_STATIC_LIBRARIES := libhealthd
-
-include $(BUILD_EXECUTABLE)
-
-### charger_test ###
-include $(CLEAR_VARS)
-LOCAL_MODULE := charger_test
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-LOCAL_CFLAGS := -Wall -Werror -DCHARGER_NO_UI
-LOCAL_STATIC_LIBRARIES := $(CHARGER_STATIC_LIBRARIES)
-LOCAL_SHARED_LIBRARIES := $(CHARGER_SHARED_LIBRARIES)
-LOCAL_SRC_FILES := \
-    charger_test.cpp \
-
-include $(BUILD_EXECUTABLE)
-
-CHARGER_STATIC_LIBRARIES :=
-CHARGER_SHARED_LIBRARIES :=
-
 ### charger_res_images ###
 ifneq ($(strip $(LOCAL_CHARGER_NO_UI)),true)
 define _add-charger-image
diff --git a/healthd/AnimationParser.cpp b/healthd/AnimationParser.cpp
index 864038b..fde3b95 100644
--- a/healthd/AnimationParser.cpp
+++ b/healthd/AnimationParser.cpp
@@ -84,7 +84,6 @@
     static constexpr const char* fail_prefix = "fail: ";
     static constexpr const char* clock_prefix = "clock_display: ";
     static constexpr const char* percent_prefix = "percent_display: ";
-    static constexpr const char* frame_prefix = "frame: ";
 
     std::vector<animation::frame> frames;
 
diff --git a/healthd/BatteryMonitor.cpp b/healthd/BatteryMonitor.cpp
index 06c8176..599f500 100644
--- a/healthd/BatteryMonitor.cpp
+++ b/healthd/BatteryMonitor.cpp
@@ -29,10 +29,12 @@
 
 #include <algorithm>
 #include <memory>
+#include <optional>
 
 #include <android-base/file.h>
 #include <android-base/parseint.h>
 #include <android-base/strings.h>
+#include <android/hardware/health/2.1/types.h>
 #include <batteryservice/BatteryService.h>
 #include <cutils/klog.h>
 #include <cutils/properties.h>
@@ -47,97 +49,129 @@
 #define MILLION 1.0e6
 #define DEFAULT_VBUS_VOLTAGE 5000000
 
+using HealthInfo_1_0 = android::hardware::health::V1_0::HealthInfo;
+using HealthInfo_2_0 = android::hardware::health::V2_0::HealthInfo;
+using HealthInfo_2_1 = android::hardware::health::V2_1::HealthInfo;
+using android::hardware::health::V1_0::BatteryHealth;
+using android::hardware::health::V1_0::BatteryStatus;
+using android::hardware::health::V2_1::BatteryCapacityLevel;
+using android::hardware::health::V2_1::Constants;
+
 namespace android {
 
-struct sysfsStringEnumMap {
+template <typename T>
+struct SysfsStringEnumMap {
     const char* s;
-    int val;
+    T val;
 };
 
-static int mapSysfsString(const char* str,
-                          struct sysfsStringEnumMap map[]) {
+template <typename T>
+static std::optional<T> mapSysfsString(const char* str, SysfsStringEnumMap<T> map[]) {
     for (int i = 0; map[i].s; i++)
         if (!strcmp(str, map[i].s))
             return map[i].val;
 
-    return -1;
+    return std::nullopt;
 }
 
-static void initBatteryProperties(BatteryProperties* props) {
-    props->chargerAcOnline = false;
-    props->chargerUsbOnline = false;
-    props->chargerWirelessOnline = false;
-    props->maxChargingCurrent = 0;
-    props->maxChargingVoltage = 0;
-    props->batteryStatus = BATTERY_STATUS_UNKNOWN;
-    props->batteryHealth = BATTERY_HEALTH_UNKNOWN;
-    props->batteryPresent = false;
-    props->batteryLevel = 0;
-    props->batteryVoltage = 0;
-    props->batteryTemperature = 0;
-    props->batteryCurrent = 0;
-    props->batteryCycleCount = 0;
-    props->batteryFullCharge = 0;
-    props->batteryChargeCounter = 0;
-    props->batteryTechnology.clear();
+static void initHealthInfo(HealthInfo_2_1* health_info_2_1) {
+    *health_info_2_1 = HealthInfo_2_1{};
+
+    // HIDL enum values are zero initialized, so they need to be initialized
+    // properly.
+    health_info_2_1->batteryCapacityLevel = BatteryCapacityLevel::UNKNOWN;
+    health_info_2_1->batteryChargeTimeToFullNowSeconds =
+            (int64_t)Constants::BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED;
+    auto* props = &health_info_2_1->legacy.legacy;
+    props->batteryStatus = BatteryStatus::UNKNOWN;
+    props->batteryHealth = BatteryHealth::UNKNOWN;
 }
 
 BatteryMonitor::BatteryMonitor()
     : mHealthdConfig(nullptr),
       mBatteryDevicePresent(false),
       mBatteryFixedCapacity(0),
-      mBatteryFixedTemperature(0) {
-    initBatteryProperties(&props);
+      mBatteryFixedTemperature(0),
+      mHealthInfo(std::make_unique<HealthInfo_2_1>()) {
+    initHealthInfo(mHealthInfo.get());
 }
 
-struct BatteryProperties getBatteryProperties(BatteryMonitor* batteryMonitor) {
-    return batteryMonitor->props;
+BatteryMonitor::~BatteryMonitor() {}
+
+const HealthInfo_1_0& BatteryMonitor::getHealthInfo_1_0() const {
+    return getHealthInfo_2_0().legacy;
 }
 
-int BatteryMonitor::getBatteryStatus(const char* status) {
-    int ret;
-    struct sysfsStringEnumMap batteryStatusMap[] = {
-        { "Unknown", BATTERY_STATUS_UNKNOWN },
-        { "Charging", BATTERY_STATUS_CHARGING },
-        { "Discharging", BATTERY_STATUS_DISCHARGING },
-        { "Not charging", BATTERY_STATUS_NOT_CHARGING },
-        { "Full", BATTERY_STATUS_FULL },
-        { NULL, 0 },
+const HealthInfo_2_0& BatteryMonitor::getHealthInfo_2_0() const {
+    return getHealthInfo_2_1().legacy;
+}
+
+const HealthInfo_2_1& BatteryMonitor::getHealthInfo_2_1() const {
+    return *mHealthInfo;
+}
+
+BatteryStatus getBatteryStatus(const char* status) {
+    static SysfsStringEnumMap<BatteryStatus> batteryStatusMap[] = {
+            {"Unknown", BatteryStatus::UNKNOWN},
+            {"Charging", BatteryStatus::CHARGING},
+            {"Discharging", BatteryStatus::DISCHARGING},
+            {"Not charging", BatteryStatus::NOT_CHARGING},
+            {"Full", BatteryStatus::FULL},
+            {NULL, BatteryStatus::UNKNOWN},
     };
 
-    ret = mapSysfsString(status, batteryStatusMap);
-    if (ret < 0) {
+    auto ret = mapSysfsString(status, batteryStatusMap);
+    if (!ret) {
         KLOG_WARNING(LOG_TAG, "Unknown battery status '%s'\n", status);
-        ret = BATTERY_STATUS_UNKNOWN;
+        *ret = BatteryStatus::UNKNOWN;
     }
 
-    return ret;
+    return *ret;
 }
 
-int BatteryMonitor::getBatteryHealth(const char* status) {
-    int ret;
-    struct sysfsStringEnumMap batteryHealthMap[] = {
-        { "Unknown", BATTERY_HEALTH_UNKNOWN },
-        { "Good", BATTERY_HEALTH_GOOD },
-        { "Overheat", BATTERY_HEALTH_OVERHEAT },
-        { "Dead", BATTERY_HEALTH_DEAD },
-        { "Over voltage", BATTERY_HEALTH_OVER_VOLTAGE },
-        { "Unspecified failure", BATTERY_HEALTH_UNSPECIFIED_FAILURE },
-        { "Cold", BATTERY_HEALTH_COLD },
-        // battery health values from JEITA spec
-        { "Warm", BATTERY_HEALTH_GOOD },
-        { "Cool", BATTERY_HEALTH_GOOD },
-        { "Hot", BATTERY_HEALTH_OVERHEAT },
-        { NULL, 0 },
+BatteryCapacityLevel getBatteryCapacityLevel(const char* capacityLevel) {
+    static SysfsStringEnumMap<BatteryCapacityLevel> batteryCapacityLevelMap[] = {
+            {"Unknown", BatteryCapacityLevel::UNKNOWN},
+            {"Critical", BatteryCapacityLevel::CRITICAL},
+            {"Low", BatteryCapacityLevel::LOW},
+            {"Normal", BatteryCapacityLevel::NORMAL},
+            {"High", BatteryCapacityLevel::HIGH},
+            {"Full", BatteryCapacityLevel::FULL},
+            {NULL, BatteryCapacityLevel::UNSUPPORTED},
     };
 
-    ret = mapSysfsString(status, batteryHealthMap);
-    if (ret < 0) {
-        KLOG_WARNING(LOG_TAG, "Unknown battery health '%s'\n", status);
-        ret = BATTERY_HEALTH_UNKNOWN;
+    auto ret = mapSysfsString(capacityLevel, batteryCapacityLevelMap);
+    if (!ret) {
+        KLOG_WARNING(LOG_TAG, "Unsupported battery capacity level '%s'\n", capacityLevel);
+        *ret = BatteryCapacityLevel::UNSUPPORTED;
     }
 
-    return ret;
+    return *ret;
+}
+
+BatteryHealth getBatteryHealth(const char* status) {
+    static SysfsStringEnumMap<BatteryHealth> batteryHealthMap[] = {
+            {"Unknown", BatteryHealth::UNKNOWN},
+            {"Good", BatteryHealth::GOOD},
+            {"Overheat", BatteryHealth::OVERHEAT},
+            {"Dead", BatteryHealth::DEAD},
+            {"Over voltage", BatteryHealth::OVER_VOLTAGE},
+            {"Unspecified failure", BatteryHealth::UNSPECIFIED_FAILURE},
+            {"Cold", BatteryHealth::COLD},
+            // battery health values from JEITA spec
+            {"Warm", BatteryHealth::GOOD},
+            {"Cool", BatteryHealth::GOOD},
+            {"Hot", BatteryHealth::OVERHEAT},
+            {NULL, BatteryHealth::UNKNOWN},
+    };
+
+    auto ret = mapSysfsString(status, batteryHealthMap);
+    if (!ret) {
+        KLOG_WARNING(LOG_TAG, "Unknown battery health '%s'\n", status);
+        *ret = BatteryHealth::UNKNOWN;
+    }
+
+    return *ret;
 }
 
 int BatteryMonitor::readFromFile(const String8& path, std::string* buf) {
@@ -148,35 +182,34 @@
 }
 
 BatteryMonitor::PowerSupplyType BatteryMonitor::readPowerSupplyType(const String8& path) {
-    std::string buf;
-    int ret;
-    struct sysfsStringEnumMap supplyTypeMap[] = {
-            { "Unknown", ANDROID_POWER_SUPPLY_TYPE_UNKNOWN },
-            { "Battery", ANDROID_POWER_SUPPLY_TYPE_BATTERY },
-            { "UPS", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "Mains", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB", ANDROID_POWER_SUPPLY_TYPE_USB },
-            { "USB_DCP", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB_HVDCP", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB_CDP", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB_ACA", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB_C", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB_PD", ANDROID_POWER_SUPPLY_TYPE_AC },
-            { "USB_PD_DRP", ANDROID_POWER_SUPPLY_TYPE_USB },
-            { "Wireless", ANDROID_POWER_SUPPLY_TYPE_WIRELESS },
-            { NULL, 0 },
+    static SysfsStringEnumMap<int> supplyTypeMap[] = {
+            {"Unknown", ANDROID_POWER_SUPPLY_TYPE_UNKNOWN},
+            {"Battery", ANDROID_POWER_SUPPLY_TYPE_BATTERY},
+            {"UPS", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"Mains", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB", ANDROID_POWER_SUPPLY_TYPE_USB},
+            {"USB_DCP", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB_HVDCP", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB_CDP", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB_ACA", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB_C", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB_PD", ANDROID_POWER_SUPPLY_TYPE_AC},
+            {"USB_PD_DRP", ANDROID_POWER_SUPPLY_TYPE_USB},
+            {"Wireless", ANDROID_POWER_SUPPLY_TYPE_WIRELESS},
+            {NULL, 0},
     };
+    std::string buf;
 
     if (readFromFile(path, &buf) <= 0)
         return ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;
 
-    ret = mapSysfsString(buf.c_str(), supplyTypeMap);
-    if (ret < 0) {
+    auto ret = mapSysfsString(buf.c_str(), supplyTypeMap);
+    if (!ret) {
         KLOG_WARNING(LOG_TAG, "Unknown power supply type '%s'\n", buf.c_str());
-        ret = ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;
+        *ret = ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;
     }
 
-    return static_cast<BatteryMonitor::PowerSupplyType>(ret);
+    return static_cast<BatteryMonitor::PowerSupplyType>(*ret);
 }
 
 bool BatteryMonitor::getBooleanField(const String8& path) {
@@ -200,10 +233,19 @@
     return value;
 }
 
-bool BatteryMonitor::update(void) {
-    bool logthis;
+bool BatteryMonitor::isScopedPowerSupply(const char* name) {
+    constexpr char kScopeDevice[] = "Device";
 
-    initBatteryProperties(&props);
+    String8 path;
+    path.appendFormat("%s/%s/scope", POWER_SUPPLY_SYSFS_PATH, name);
+    std::string scope;
+    return (readFromFile(path, &scope) > 0 && scope == kScopeDevice);
+}
+
+void BatteryMonitor::updateValues(void) {
+    initHealthInfo(mHealthInfo.get());
+
+    HealthInfo_1_0& props = mHealthInfo->legacy.legacy;
 
     if (!mHealthdConfig->batteryPresentPath.isEmpty())
         props.batteryPresent = getBooleanField(mHealthdConfig->batteryPresentPath);
@@ -216,7 +258,7 @@
     props.batteryVoltage = getIntField(mHealthdConfig->batteryVoltagePath) / 1000;
 
     if (!mHealthdConfig->batteryCurrentNowPath.isEmpty())
-        props.batteryCurrent = getIntField(mHealthdConfig->batteryCurrentNowPath) / 1000;
+        props.batteryCurrent = getIntField(mHealthdConfig->batteryCurrentNowPath);
 
     if (!mHealthdConfig->batteryFullChargePath.isEmpty())
         props.batteryFullCharge = getIntField(mHealthdConfig->batteryFullChargePath);
@@ -227,12 +269,27 @@
     if (!mHealthdConfig->batteryChargeCounterPath.isEmpty())
         props.batteryChargeCounter = getIntField(mHealthdConfig->batteryChargeCounterPath);
 
+    if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty())
+        mHealthInfo->legacy.batteryCurrentAverage =
+                getIntField(mHealthdConfig->batteryCurrentAvgPath);
+
+    if (!mHealthdConfig->batteryChargeTimeToFullNowPath.isEmpty())
+        mHealthInfo->batteryChargeTimeToFullNowSeconds =
+                getIntField(mHealthdConfig->batteryChargeTimeToFullNowPath);
+
+    if (!mHealthdConfig->batteryFullChargeDesignCapacityUahPath.isEmpty())
+        mHealthInfo->batteryFullChargeDesignCapacityUah =
+                getIntField(mHealthdConfig->batteryFullChargeDesignCapacityUahPath);
+
     props.batteryTemperature = mBatteryFixedTemperature ?
         mBatteryFixedTemperature :
         getIntField(mHealthdConfig->batteryTemperaturePath);
 
     std::string buf;
 
+    if (readFromFile(mHealthdConfig->batteryCapacityLevelPath, &buf) > 0)
+        mHealthInfo->batteryCapacityLevel = getBatteryCapacityLevel(buf.c_str());
+
     if (readFromFile(mHealthdConfig->batteryStatusPath, &buf) > 0)
         props.batteryStatus = getBatteryStatus(buf.c_str());
 
@@ -289,62 +346,58 @@
             }
         }
     }
+}
 
-    logthis = !healthd_board_battery_update(&props);
+void BatteryMonitor::logValues(void) {
+    char dmesgline[256];
+    size_t len;
+    const HealthInfo_1_0& props = mHealthInfo->legacy.legacy;
+    if (props.batteryPresent) {
+        snprintf(dmesgline, sizeof(dmesgline), "battery l=%d v=%d t=%s%d.%d h=%d st=%d",
+                 props.batteryLevel, props.batteryVoltage, props.batteryTemperature < 0 ? "-" : "",
+                 abs(props.batteryTemperature / 10), abs(props.batteryTemperature % 10),
+                 props.batteryHealth, props.batteryStatus);
 
-    if (logthis) {
-        char dmesgline[256];
-        size_t len;
-        if (props.batteryPresent) {
-            snprintf(dmesgline, sizeof(dmesgline),
-                 "battery l=%d v=%d t=%s%d.%d h=%d st=%d",
-                 props.batteryLevel, props.batteryVoltage,
-                 props.batteryTemperature < 0 ? "-" : "",
-                 abs(props.batteryTemperature / 10),
-                 abs(props.batteryTemperature % 10), props.batteryHealth,
-                 props.batteryStatus);
-
-            len = strlen(dmesgline);
-            if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) {
-                len += snprintf(dmesgline + len, sizeof(dmesgline) - len,
-                                " c=%d", props.batteryCurrent);
-            }
-
-            if (!mHealthdConfig->batteryFullChargePath.isEmpty()) {
-                len += snprintf(dmesgline + len, sizeof(dmesgline) - len,
-                                " fc=%d", props.batteryFullCharge);
-            }
-
-            if (!mHealthdConfig->batteryCycleCountPath.isEmpty()) {
-                len += snprintf(dmesgline + len, sizeof(dmesgline) - len,
-                                " cc=%d", props.batteryCycleCount);
-            }
-        } else {
-            len = snprintf(dmesgline, sizeof(dmesgline),
-                 "battery none");
+        len = strlen(dmesgline);
+        if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) {
+            len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " c=%d",
+                            props.batteryCurrent);
         }
 
-        snprintf(dmesgline + len, sizeof(dmesgline) - len, " chg=%s%s%s",
-                 props.chargerAcOnline ? "a" : "",
-                 props.chargerUsbOnline ? "u" : "",
-                 props.chargerWirelessOnline ? "w" : "");
+        if (!mHealthdConfig->batteryFullChargePath.isEmpty()) {
+            len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " fc=%d",
+                            props.batteryFullCharge);
+        }
 
-        KLOG_WARNING(LOG_TAG, "%s\n", dmesgline);
+        if (!mHealthdConfig->batteryCycleCountPath.isEmpty()) {
+            len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " cc=%d",
+                            props.batteryCycleCount);
+        }
+    } else {
+        len = snprintf(dmesgline, sizeof(dmesgline), "battery none");
     }
 
-    healthd_mode_ops->battery_update(&props);
+    snprintf(dmesgline + len, sizeof(dmesgline) - len, " chg=%s%s%s",
+             props.chargerAcOnline ? "a" : "", props.chargerUsbOnline ? "u" : "",
+             props.chargerWirelessOnline ? "w" : "");
+
+    KLOG_WARNING(LOG_TAG, "%s\n", dmesgline);
+}
+
+bool BatteryMonitor::isChargerOnline() {
+    const HealthInfo_1_0& props = mHealthInfo->legacy.legacy;
     return props.chargerAcOnline | props.chargerUsbOnline |
             props.chargerWirelessOnline;
 }
 
 int BatteryMonitor::getChargeStatus() {
-    int result = BATTERY_STATUS_UNKNOWN;
+    BatteryStatus result = BatteryStatus::UNKNOWN;
     if (!mHealthdConfig->batteryStatusPath.isEmpty()) {
         std::string buf;
         if (readFromFile(mHealthdConfig->batteryStatusPath, &buf) > 0)
             result = getBatteryStatus(buf.c_str());
     }
-    return result;
+    return static_cast<int>(result);
 }
 
 status_t BatteryMonitor::getProperty(int id, struct BatteryProperty *val) {
@@ -417,6 +470,7 @@
 void BatteryMonitor::dumpState(int fd) {
     int v;
     char vs[128];
+    const HealthInfo_1_0& props = mHealthInfo->legacy.legacy;
 
     snprintf(vs, sizeof(vs), "ac: %d usb: %d wireless: %d current_max: %d voltage_max: %d\n",
              props.chargerAcOnline, props.chargerUsbOnline,
@@ -502,6 +556,11 @@
                 break;
 
             case ANDROID_POWER_SUPPLY_TYPE_BATTERY:
+                // Some devices expose the battery status of sub-component like
+                // stylus. Such a device-scoped battery info needs to be skipped
+                // in BatteryMonitor, which is intended to report the status of
+                // the battery supplying the power to the whole system.
+                if (isScopedPowerSupply(name)) continue;
                 mBatteryDevicePresent = true;
 
                 if (mHealthdConfig->batteryStatusPath.isEmpty()) {
@@ -569,6 +628,26 @@
                         mHealthdConfig->batteryCycleCountPath = path;
                 }
 
+                if (mHealthdConfig->batteryCapacityLevelPath.isEmpty()) {
+                    path.clear();
+                    path.appendFormat("%s/%s/capacity_level", POWER_SUPPLY_SYSFS_PATH, name);
+                    if (access(path, R_OK) == 0) mHealthdConfig->batteryCapacityLevelPath = path;
+                }
+
+                if (mHealthdConfig->batteryChargeTimeToFullNowPath.isEmpty()) {
+                    path.clear();
+                    path.appendFormat("%s/%s/time_to_full_now", POWER_SUPPLY_SYSFS_PATH, name);
+                    if (access(path, R_OK) == 0)
+                        mHealthdConfig->batteryChargeTimeToFullNowPath = path;
+                }
+
+                if (mHealthdConfig->batteryFullChargeDesignCapacityUahPath.isEmpty()) {
+                    path.clear();
+                    path.appendFormat("%s/%s/charge_full_design", POWER_SUPPLY_SYSFS_PATH, name);
+                    if (access(path, R_OK) == 0)
+                        mHealthdConfig->batteryFullChargeDesignCapacityUahPath = path;
+                }
+
                 if (mHealthdConfig->batteryCurrentAvgPath.isEmpty()) {
                     path.clear();
                     path.appendFormat("%s/%s/current_avg",
@@ -637,6 +716,12 @@
             KLOG_WARNING(LOG_TAG, "BatteryFullChargePath not found\n");
         if (mHealthdConfig->batteryCycleCountPath.isEmpty())
             KLOG_WARNING(LOG_TAG, "BatteryCycleCountPath not found\n");
+        if (mHealthdConfig->batteryCapacityLevelPath.isEmpty())
+            KLOG_WARNING(LOG_TAG, "batteryCapacityLevelPath not found\n");
+        if (mHealthdConfig->batteryChargeTimeToFullNowPath.isEmpty())
+            KLOG_WARNING(LOG_TAG, "batteryChargeTimeToFullNowPath. not found\n");
+        if (mHealthdConfig->batteryFullChargeDesignCapacityUahPath.isEmpty())
+            KLOG_WARNING(LOG_TAG, "batteryFullChargeDesignCapacityUahPath. not found\n");
     }
 
     if (property_get("ro.boot.fake_battery", pval, NULL) > 0
diff --git a/healthd/animation.h b/healthd/animation.h
index 9476c91..d02d7a7 100644
--- a/healthd/animation.h
+++ b/healthd/animation.h
@@ -75,7 +75,7 @@
 
     bool run;
 
-    frame* frames;
+    frame* frames = nullptr;
     int cur_frame;
     int num_frames;
     int first_frame_repeats;  // Number of times to repeat the first frame in the current cycle
@@ -85,6 +85,8 @@
 
     int cur_level;  // current battery level being animated (0-100)
     int cur_status;  // current battery status - see BatteryService.h for BATTERY_STATUS_*
+
+    ~animation() { delete frames; }
 };
 
 }
diff --git a/healthd/api/charger_sysprop-current.txt b/healthd/api/charger_sysprop-current.txt
new file mode 100644
index 0000000..678c847
--- /dev/null
+++ b/healthd/api/charger_sysprop-current.txt
@@ -0,0 +1,29 @@
+props {
+  module: "android.sysprop.ChargerProperties"
+  prop {
+    api_name: "disable_init_blank"
+    scope: Internal
+    prop_name: "ro.charger.disable_init_blank"
+  }
+  prop {
+    api_name: "draw_split_offset"
+    type: Long
+    scope: Internal
+    prop_name: "ro.charger.draw_split_offset"
+  }
+  prop {
+    api_name: "draw_split_screen"
+    scope: Internal
+    prop_name: "ro.charger.draw_split_screen"
+  }
+  prop {
+    api_name: "enable_suspend"
+    scope: Internal
+    prop_name: "ro.charger.enable_suspend"
+  }
+  prop {
+    api_name: "no_ui"
+    scope: Internal
+    prop_name: "ro.charger.no_ui"
+  }
+}
diff --git a/healthd/api/charger_sysprop-latest.txt b/healthd/api/charger_sysprop-latest.txt
new file mode 100644
index 0000000..678c847
--- /dev/null
+++ b/healthd/api/charger_sysprop-latest.txt
@@ -0,0 +1,29 @@
+props {
+  module: "android.sysprop.ChargerProperties"
+  prop {
+    api_name: "disable_init_blank"
+    scope: Internal
+    prop_name: "ro.charger.disable_init_blank"
+  }
+  prop {
+    api_name: "draw_split_offset"
+    type: Long
+    scope: Internal
+    prop_name: "ro.charger.draw_split_offset"
+  }
+  prop {
+    api_name: "draw_split_screen"
+    scope: Internal
+    prop_name: "ro.charger.draw_split_screen"
+  }
+  prop {
+    api_name: "enable_suspend"
+    scope: Internal
+    prop_name: "ro.charger.enable_suspend"
+  }
+  prop {
+    api_name: "no_ui"
+    scope: Internal
+    prop_name: "ro.charger.no_ui"
+  }
+}
diff --git a/healthd/charger.cpp b/healthd/charger.cpp
index 085cceb..d03978d 100644
--- a/healthd/charger.cpp
+++ b/healthd/charger.cpp
@@ -14,13 +14,21 @@
  * limitations under the License.
  */
 
+#include <android-base/logging.h>
+
+#include "charger.sysprop.h"
 #include "healthd_mode_charger.h"
 #include "healthd_mode_charger_nops.h"
 
-int main(int argc, char** argv) {
-#ifdef CHARGER_NO_UI
-    return healthd_charger_nops(argc, argv);
-#else
-    return healthd_charger_main(argc, argv);
+#ifndef CHARGER_FORCE_NO_UI
+#define CHARGER_FORCE_NO_UI 0
 #endif
+
+int main(int argc, char** argv) {
+    android::base::InitLogging(argv, &android::base::KernelLogger);
+    if (CHARGER_FORCE_NO_UI || android::sysprop::ChargerProperties::no_ui().value_or(false)) {
+        return healthd_charger_nops(argc, argv);
+    } else {
+        return healthd_charger_main(argc, argv);
+    }
 }
diff --git a/healthd/charger.sysprop b/healthd/charger.sysprop
new file mode 100644
index 0000000..b3f47a1
--- /dev/null
+++ b/healthd/charger.sysprop
@@ -0,0 +1,38 @@
+owner: Platform
+module: "android.sysprop.ChargerProperties"
+
+prop {
+    api_name: "draw_split_screen"
+    type: Boolean
+    prop_name: "ro.charger.draw_split_screen"
+    scope: Internal
+    access: Readonly
+}
+prop {
+    api_name: "draw_split_offset"
+    type: Long
+    prop_name: "ro.charger.draw_split_offset"
+    scope: Internal
+    access: Readonly
+}
+prop {
+    api_name: "disable_init_blank"
+    type: Boolean
+    prop_name: "ro.charger.disable_init_blank"
+    scope: Internal
+    access: Readonly
+}
+prop {
+    api_name: "enable_suspend"
+    type: Boolean
+    prop_name: "ro.charger.enable_suspend"
+    scope: Internal
+    access: Readonly
+}
+prop {
+    api_name: "no_ui"
+    type: Boolean
+    prop_name: "ro.charger.no_ui"
+    scope: Internal
+    access: Readonly
+}
diff --git a/healthd/charger_test.cpp b/healthd/charger_test.cpp
index a7e2161..e0bde68 100644
--- a/healthd/charger_test.cpp
+++ b/healthd/charger_test.cpp
@@ -21,13 +21,22 @@
 #include <condition_variable>
 #include <fstream>
 #include <iostream>
+#include <memory>
 #include <mutex>
 #include <streambuf>
 #include <string>
 #include <thread>
 #include <vector>
 
-#include <health2/Health.h>
+#include <health/utils.h>
+#include <health2impl/Health.h>
+
+#include "healthd_mode_charger.h"
+
+using android::hardware::health::InitHealthdConfig;
+using android::hardware::health::V2_1::HealthInfo;
+using android::hardware::health::V2_1::IHealth;
+using android::hardware::health::V2_1::implementation::Health;
 
 #define LOG_THIS(fmt, ...)     \
     ALOGE(fmt, ##__VA_ARGS__); \
@@ -129,22 +138,23 @@
     config->screen_on = NULL;
 }
 
-int healthd_board_battery_update(struct android::BatteryProperties*) {
-    getUpdateNotifier().set(true /* updated */);
+class TestHealth : public Health {
+  protected:
+    using Health::Health;
+    void UpdateHealthInfo(HealthInfo*) override { getUpdateNotifier().set(true /* updated */); }
+};
 
-    // return 0 to log periodic polled battery status to kernel log
-    return 0;
-}
-
-extern int healthd_charger_main(int argc, char** argv);
-
-int main(int argc, char** argv) {
-    using android::hardware::health::V2_0::implementation::Health;
-
+int main(int /*argc*/, char** /*argv*/) {
     const char* dumpFile = "/data/local/tmp/dump.txt";
 
+    auto config = std::make_unique<healthd_config>();
+    InitHealthdConfig(config.get());
+    healthd_board_init(config.get());
+    sp<IHealth> passthrough = new TestHealth(std::move(config));
+
     std::thread bgThread([=] {
-        healthd_charger_main(argc, argv);
+        android::Charger charger(passthrough);
+        charger.StartLoop();
     });
 
     // wait for healthd_init to finish
@@ -153,7 +163,7 @@
         exit(1);
     }
 
-    Health::getImplementation()->debug(createHidlHandle(dumpFile), {} /* options */);
+    passthrough->debug(createHidlHandle(dumpFile), {} /* options */);
 
     std::string content = openToString(dumpFile);
     int status = expectContains(content, {
diff --git a/healthd/charger_utils.cpp b/healthd/charger_utils.cpp
new file mode 100644
index 0000000..8bbfb4e
--- /dev/null
+++ b/healthd/charger_utils.cpp
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "charger_utils.h"
+
+#include <android-base/logging.h>
+#include <android/hardware/health/2.1/IHealth.h>
+#include <health/utils.h>
+#include <health2impl/Health.h>
+
+namespace android {
+namespace hardware {
+namespace health {
+
+sp<V2_1::IHealth> GetHealthServiceOrDefault() {
+    // No need to use get_health_service from libhealthhalutils that
+    // checks for "backup" instance provided by healthd, since
+    // V2_1::implementation::Health does the same thing.
+    sp<V2_1::IHealth> service = V2_1::IHealth::getService();
+    if (service != nullptr) {
+        LOG(INFO) << "Charger uses health HAL service.";
+    } else {
+        LOG(WARNING) << "Charger uses system defaults.";
+        auto config = std::make_unique<healthd_config>();
+        InitHealthdConfig(config.get());
+        service = new V2_1::implementation::Health(std::move(config));
+    }
+    return service;
+}
+
+}  // namespace health
+}  // namespace hardware
+}  // namespace android
diff --git a/healthd/charger_utils.h b/healthd/charger_utils.h
new file mode 100644
index 0000000..39d8aab
--- /dev/null
+++ b/healthd/charger_utils.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/health/2.1/IHealth.h>
+
+namespace android {
+namespace hardware {
+namespace health {
+// Return health HAL service. If it is not supported on the device (with
+// VINTF checks), return a default passthrough implementation.
+sp<V2_1::IHealth> GetHealthServiceOrDefault();
+}  // namespace health
+}  // namespace hardware
+}  // namespace android
diff --git a/healthd/healthd_draw.cpp b/healthd/healthd_draw.cpp
index 3da8bda..50eee19 100644
--- a/healthd/healthd_draw.cpp
+++ b/healthd/healthd_draw.cpp
@@ -18,15 +18,34 @@
 #include <batteryservice/BatteryService.h>
 #include <cutils/klog.h>
 
+#include "charger.sysprop.h"
 #include "healthd_draw.h"
 
 #define LOGE(x...) KLOG_ERROR("charger", x);
 #define LOGW(x...) KLOG_WARNING("charger", x);
 #define LOGV(x...) KLOG_DEBUG("charger", x);
 
+static bool get_split_screen() {
+    return android::sysprop::ChargerProperties::draw_split_screen().value_or(false);
+}
+
+static int get_split_offset() {
+    int64_t value = android::sysprop::ChargerProperties::draw_split_offset().value_or(0);
+    if (value < static_cast<int64_t>(std::numeric_limits<int>::min())) {
+        LOGW("draw_split_offset = %" PRId64 " overflow for an int; resetting to %d.\n", value,
+             std::numeric_limits<int>::min());
+        value = std::numeric_limits<int>::min();
+    }
+    if (value > static_cast<int64_t>(std::numeric_limits<int>::max())) {
+        LOGW("draw_split_offset = %" PRId64 " overflow for an int; resetting to %d.\n", value,
+             std::numeric_limits<int>::max());
+        value = std::numeric_limits<int>::max();
+    }
+    return static_cast<int>(value);
+}
+
 HealthdDraw::HealthdDraw(animation* anim)
-  : kSplitScreen(HEALTHD_DRAW_SPLIT_SCREEN),
-    kSplitOffset(HEALTHD_DRAW_SPLIT_OFFSET) {
+    : kSplitScreen(get_split_screen()), kSplitOffset(get_split_offset()) {
     int ret = gr_init();
 
     if (ret < 0) {
diff --git a/healthd/healthd_mode_charger.cpp b/healthd/healthd_mode_charger.cpp
index 0e5aa4f..386ba1a 100644
--- a/healthd/healthd_mode_charger.cpp
+++ b/healthd/healthd_mode_charger.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include "healthd_mode_charger.h"
+
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -28,7 +30,7 @@
 #include <time.h>
 #include <unistd.h>
 
-#include <functional>
+#include <optional>
 
 #include <android-base/file.h>
 #include <android-base/macros.h>
@@ -43,21 +45,34 @@
 #include <cutils/uevent.h>
 #include <sys/reboot.h>
 
-#ifdef CHARGER_ENABLE_SUSPEND
 #include <suspend/autosuspend.h>
-#endif
 
 #include "AnimationParser.h"
+#include "charger.sysprop.h"
+#include "charger_utils.h"
 #include "healthd_draw.h"
 
-#include <health2/Health.h>
+#include <android/hardware/health/2.0/IHealthInfoCallback.h>
+#include <health/utils.h>
+#include <health2impl/HalHealthLoop.h>
+#include <health2impl/Health.h>
 #include <healthd/healthd.h>
 
 using namespace android;
+using android::hardware::Return;
+using android::hardware::health::GetHealthServiceOrDefault;
+using android::hardware::health::HealthLoop;
+using android::hardware::health::V1_0::BatteryStatus;
+using android::hardware::health::V2_0::Result;
+using android::hardware::health::V2_1::IHealth;
+using IHealth_2_0 = android::hardware::health::V2_0::IHealth;
+using HealthInfo_1_0 = android::hardware::health::V1_0::HealthInfo;
+using HealthInfo_2_1 = android::hardware::health::V2_1::HealthInfo;
 
 // main healthd loop
 extern int healthd_main(void);
 
+// minui globals
 char* locale;
 
 #ifndef max
@@ -78,6 +93,7 @@
 #define UNPLUGGED_SHUTDOWN_TIME (10 * MSEC_PER_SEC)
 #define UNPLUGGED_DISPLAY_TIME (3 * MSEC_PER_SEC)
 #define MAX_BATT_LEVEL_WAIT_TIME (3 * MSEC_PER_SEC)
+#define UNPLUGGED_SHUTDOWN_TIME_PROP "ro.product.charger.unplugged_shutdown_time"
 
 #define LAST_KMSG_MAX_SZ (32 * 1024)
 
@@ -85,6 +101,8 @@
 #define LOGW(x...) KLOG_WARNING("charger", x);
 #define LOGV(x...) KLOG_DEBUG("charger", x);
 
+namespace android {
+
 // Resources in /product/etc/res overrides resources in /res.
 // If the device is using the Generic System Image (GSI), resources may exist in
 // both paths.
@@ -93,28 +111,6 @@
 static constexpr const char* product_animation_root = "/product/etc/res/images/";
 static constexpr const char* animation_desc_path = "/res/values/charger/animation.txt";
 
-struct key_state {
-    bool pending;
-    bool down;
-    int64_t timestamp;
-};
-
-struct charger {
-    bool have_battery_state;
-    bool charger_connected;
-    bool screen_blanked;
-    int64_t next_screen_transition;
-    int64_t next_key_check;
-    int64_t next_pwr_check;
-    int64_t wait_batt_level_timestamp;
-
-    key_state keys[KEY_MAX + 1];
-
-    animation* batt_anim;
-    GRSurface* surf_unknown;
-    int boot_min_cap;
-};
-
 static const animation BASE_ANIMATION = {
     .text_clock =
         {
@@ -153,51 +149,51 @@
     .cur_status = BATTERY_STATUS_UNKNOWN,
 };
 
-static animation::frame default_animation_frames[] = {
-    {
-        .disp_time = 750,
-        .min_level = 0,
-        .max_level = 19,
-        .surface = NULL,
-    },
-    {
-        .disp_time = 750,
-        .min_level = 0,
-        .max_level = 39,
-        .surface = NULL,
-    },
-    {
-        .disp_time = 750,
-        .min_level = 0,
-        .max_level = 59,
-        .surface = NULL,
-    },
-    {
-        .disp_time = 750,
-        .min_level = 0,
-        .max_level = 79,
-        .surface = NULL,
-    },
-    {
-        .disp_time = 750,
-        .min_level = 80,
-        .max_level = 95,
-        .surface = NULL,
-    },
-    {
-        .disp_time = 750,
-        .min_level = 0,
-        .max_level = 100,
-        .surface = NULL,
-    },
-};
+void Charger::InitDefaultAnimationFrames() {
+    owned_frames_ = {
+            {
+                    .disp_time = 750,
+                    .min_level = 0,
+                    .max_level = 19,
+                    .surface = NULL,
+            },
+            {
+                    .disp_time = 750,
+                    .min_level = 0,
+                    .max_level = 39,
+                    .surface = NULL,
+            },
+            {
+                    .disp_time = 750,
+                    .min_level = 0,
+                    .max_level = 59,
+                    .surface = NULL,
+            },
+            {
+                    .disp_time = 750,
+                    .min_level = 0,
+                    .max_level = 79,
+                    .surface = NULL,
+            },
+            {
+                    .disp_time = 750,
+                    .min_level = 80,
+                    .max_level = 95,
+                    .surface = NULL,
+            },
+            {
+                    .disp_time = 750,
+                    .min_level = 0,
+                    .max_level = 100,
+                    .surface = NULL,
+            },
+    };
+}
 
-static animation battery_animation = BASE_ANIMATION;
+Charger::Charger(const sp<IHealth>& service)
+    : HalHealthLoop("charger", service), batt_anim_(BASE_ANIMATION) {}
 
-static charger charger_state;
-static healthd_config* healthd_config;
-static android::BatteryProperties* batt_prop;
-static std::unique_ptr<HealthdDraw> healthd_draw;
+Charger::~Charger() {}
 
 /* current time in milliseconds */
 static int64_t curr_time_ms() {
@@ -263,18 +259,16 @@
     LOGW("\n");
 }
 
-#ifdef CHARGER_ENABLE_SUSPEND
 static int request_suspend(bool enable) {
+    if (!android::sysprop::ChargerProperties::enable_suspend().value_or(false)) {
+        return 0;
+    }
+
     if (enable)
         return autosuspend_enable();
     else
         return autosuspend_disable();
 }
-#else
-static int request_suspend(bool /*enable*/) {
-    return 0;
-}
-#endif
 
 static void kick_animation(animation* anim) {
     anim->run = true;
@@ -286,123 +280,125 @@
     anim->run = false;
 }
 
-static void update_screen_state(charger* charger, int64_t now) {
-    animation* batt_anim = charger->batt_anim;
+void Charger::UpdateScreenState(int64_t now) {
     int disp_time;
 
-    if (!batt_anim->run || now < charger->next_screen_transition) return;
+    if (!batt_anim_.run || now < next_screen_transition_) return;
 
     // If battery level is not ready, keep checking in the defined time
-    if (batt_prop == nullptr ||
-        (batt_prop->batteryLevel == 0 && batt_prop->batteryStatus == BATTERY_STATUS_UNKNOWN)) {
-        if (charger->wait_batt_level_timestamp == 0) {
+    if (health_info_.batteryLevel == 0 && health_info_.batteryStatus == BatteryStatus::UNKNOWN) {
+        if (wait_batt_level_timestamp_ == 0) {
             // Set max delay time and skip drawing screen
-            charger->wait_batt_level_timestamp = now + MAX_BATT_LEVEL_WAIT_TIME;
+            wait_batt_level_timestamp_ = now + MAX_BATT_LEVEL_WAIT_TIME;
             LOGV("[%" PRId64 "] wait for battery capacity ready\n", now);
             return;
-        } else if (now <= charger->wait_batt_level_timestamp) {
+        } else if (now <= wait_batt_level_timestamp_) {
             // Do nothing, keep waiting
             return;
         }
         // If timeout and battery level is still not ready, draw unknown battery
     }
 
-    if (healthd_draw == nullptr) {
-        if (healthd_config && healthd_config->screen_on) {
-            if (!healthd_config->screen_on(batt_prop)) {
+    if (healthd_draw_ == nullptr) {
+        std::optional<bool> out_screen_on;
+        service()->shouldKeepScreenOn([&](Result res, bool screen_on) {
+            if (res == Result::SUCCESS) {
+                *out_screen_on = screen_on;
+            }
+        });
+        if (out_screen_on.has_value()) {
+            if (!*out_screen_on) {
                 LOGV("[%" PRId64 "] leave screen off\n", now);
-                batt_anim->run = false;
-                charger->next_screen_transition = -1;
-                if (charger->charger_connected) request_suspend(true);
+                batt_anim_.run = false;
+                next_screen_transition_ = -1;
+                if (charger_online()) request_suspend(true);
                 return;
             }
         }
 
-        healthd_draw.reset(new HealthdDraw(batt_anim));
+        healthd_draw_.reset(new HealthdDraw(&batt_anim_));
 
-#ifndef CHARGER_DISABLE_INIT_BLANK
-        healthd_draw->blank_screen(true);
-        charger->screen_blanked = true;
-#endif
+        if (android::sysprop::ChargerProperties::disable_init_blank().value_or(false)) {
+            healthd_draw_->blank_screen(true);
+            screen_blanked_ = true;
+        }
     }
 
     /* animation is over, blank screen and leave */
-    if (batt_anim->num_cycles > 0 && batt_anim->cur_cycle == batt_anim->num_cycles) {
-        reset_animation(batt_anim);
-        charger->next_screen_transition = -1;
-        healthd_draw->blank_screen(true);
-        charger->screen_blanked = true;
+    if (batt_anim_.num_cycles > 0 && batt_anim_.cur_cycle == batt_anim_.num_cycles) {
+        reset_animation(&batt_anim_);
+        next_screen_transition_ = -1;
+        healthd_draw_->blank_screen(true);
+        screen_blanked_ = true;
         LOGV("[%" PRId64 "] animation done\n", now);
-        if (charger->charger_connected) request_suspend(true);
+        if (charger_online()) request_suspend(true);
         return;
     }
 
-    disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time;
+    disp_time = batt_anim_.frames[batt_anim_.cur_frame].disp_time;
 
-    if (charger->screen_blanked) {
-        healthd_draw->blank_screen(false);
-        charger->screen_blanked = false;
+    if (screen_blanked_) {
+        healthd_draw_->blank_screen(false);
+        screen_blanked_ = false;
     }
 
     /* animation starting, set up the animation */
-    if (batt_anim->cur_frame == 0) {
+    if (batt_anim_.cur_frame == 0) {
         LOGV("[%" PRId64 "] animation starting\n", now);
-        if (batt_prop) {
-            batt_anim->cur_level = batt_prop->batteryLevel;
-            batt_anim->cur_status = batt_prop->batteryStatus;
-            if (batt_prop->batteryLevel >= 0 && batt_anim->num_frames != 0) {
-                /* find first frame given current battery level */
-                for (int i = 0; i < batt_anim->num_frames; i++) {
-                    if (batt_anim->cur_level >= batt_anim->frames[i].min_level &&
-                        batt_anim->cur_level <= batt_anim->frames[i].max_level) {
-                        batt_anim->cur_frame = i;
-                        break;
-                    }
+        batt_anim_.cur_level = health_info_.batteryLevel;
+        batt_anim_.cur_status = (int)health_info_.batteryStatus;
+        if (health_info_.batteryLevel >= 0 && batt_anim_.num_frames != 0) {
+            /* find first frame given current battery level */
+            for (int i = 0; i < batt_anim_.num_frames; i++) {
+                if (batt_anim_.cur_level >= batt_anim_.frames[i].min_level &&
+                    batt_anim_.cur_level <= batt_anim_.frames[i].max_level) {
+                    batt_anim_.cur_frame = i;
+                    break;
                 }
-
-                if (charger->charger_connected) {
-                    // repeat the first frame first_frame_repeats times
-                    disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time *
-                                batt_anim->first_frame_repeats;
-                } else {
-                    disp_time = UNPLUGGED_DISPLAY_TIME / batt_anim->num_cycles;
-                }
-
-                LOGV("cur_frame=%d disp_time=%d\n", batt_anim->cur_frame, disp_time);
             }
+
+            if (charger_online()) {
+                // repeat the first frame first_frame_repeats times
+                disp_time = batt_anim_.frames[batt_anim_.cur_frame].disp_time *
+                            batt_anim_.first_frame_repeats;
+            } else {
+                disp_time = UNPLUGGED_DISPLAY_TIME / batt_anim_.num_cycles;
+            }
+
+            LOGV("cur_frame=%d disp_time=%d\n", batt_anim_.cur_frame, disp_time);
         }
     }
 
     /* draw the new frame (@ cur_frame) */
-    healthd_draw->redraw_screen(charger->batt_anim, charger->surf_unknown);
+    healthd_draw_->redraw_screen(&batt_anim_, surf_unknown_);
 
     /* if we don't have anim frames, we only have one image, so just bump
      * the cycle counter and exit
      */
-    if (batt_anim->num_frames == 0 || batt_anim->cur_level < 0) {
+    if (batt_anim_.num_frames == 0 || batt_anim_.cur_level < 0) {
         LOGW("[%" PRId64 "] animation missing or unknown battery status\n", now);
-        charger->next_screen_transition = now + BATTERY_UNKNOWN_TIME;
-        batt_anim->cur_cycle++;
+        next_screen_transition_ = now + BATTERY_UNKNOWN_TIME;
+        batt_anim_.cur_cycle++;
         return;
     }
 
     /* schedule next screen transition */
-    charger->next_screen_transition = curr_time_ms() + disp_time;
+    next_screen_transition_ = curr_time_ms() + disp_time;
 
     /* advance frame cntr to the next valid frame only if we are charging
      * if necessary, advance cycle cntr, and reset frame cntr
      */
-    if (charger->charger_connected) {
-        batt_anim->cur_frame++;
+    if (charger_online()) {
+        batt_anim_.cur_frame++;
 
-        while (batt_anim->cur_frame < batt_anim->num_frames &&
-               (batt_anim->cur_level < batt_anim->frames[batt_anim->cur_frame].min_level ||
-                batt_anim->cur_level > batt_anim->frames[batt_anim->cur_frame].max_level)) {
-            batt_anim->cur_frame++;
+        while (batt_anim_.cur_frame < batt_anim_.num_frames &&
+               (batt_anim_.cur_level < batt_anim_.frames[batt_anim_.cur_frame].min_level ||
+                batt_anim_.cur_level > batt_anim_.frames[batt_anim_.cur_frame].max_level)) {
+            batt_anim_.cur_frame++;
         }
-        if (batt_anim->cur_frame >= batt_anim->num_frames) {
-            batt_anim->cur_cycle++;
-            batt_anim->cur_frame = 0;
+        if (batt_anim_.cur_frame >= batt_anim_.num_frames) {
+            batt_anim_.cur_cycle++;
+            batt_anim_.cur_frame = 0;
 
             /* don't reset the cycle counter, since we use that as a signal
              * in a test above to check if animation is over
@@ -413,29 +409,29 @@
          * If we stop it immediately instead of going through this loop, then
          * the animation would stop somewhere in the middle.
          */
-        batt_anim->cur_frame = 0;
-        batt_anim->cur_cycle++;
+        batt_anim_.cur_frame = 0;
+        batt_anim_.cur_cycle++;
     }
 }
 
-static int set_key_callback(charger* charger, int code, int value) {
+int Charger::SetKeyCallback(int code, int value) {
     int64_t now = curr_time_ms();
     int down = !!value;
 
     if (code > KEY_MAX) return -1;
 
     /* ignore events that don't modify our state */
-    if (charger->keys[code].down == down) return 0;
+    if (keys_[code].down == down) return 0;
 
     /* only record the down even timestamp, as the amount
      * of time the key spent not being pressed is not useful */
-    if (down) charger->keys[code].timestamp = now;
-    charger->keys[code].down = down;
-    charger->keys[code].pending = true;
+    if (down) keys_[code].timestamp = now;
+    keys_[code].down = down;
+    keys_[code].pending = true;
     if (down) {
         LOGV("[%" PRId64 "] key[%d] down\n", now, code);
     } else {
-        int64_t duration = now - charger->keys[code].timestamp;
+        int64_t duration = now - keys_[code].timestamp;
         int64_t secs = duration / 1000;
         int64_t msecs = duration - secs * 1000;
         LOGV("[%" PRId64 "] key[%d] up (was down for %" PRId64 ".%" PRId64 "sec)\n", now, code,
@@ -445,20 +441,19 @@
     return 0;
 }
 
-static void update_input_state(charger* charger, input_event* ev) {
+void Charger::UpdateInputState(input_event* ev) {
     if (ev->type != EV_KEY) return;
-    set_key_callback(charger, ev->code, ev->value);
+    SetKeyCallback(ev->code, ev->value);
 }
 
-static void set_next_key_check(charger* charger, key_state* key, int64_t timeout) {
+void Charger::SetNextKeyCheck(key_state* key, int64_t timeout) {
     int64_t then = key->timestamp + timeout;
 
-    if (charger->next_key_check == -1 || then < charger->next_key_check)
-        charger->next_key_check = then;
+    if (next_key_check_ == -1 || then < next_key_check_) next_key_check_ = then;
 }
 
-static void process_key(charger* charger, int code, int64_t now) {
-    key_state* key = &charger->keys[code];
+void Charger::ProcessKey(int code, int64_t now) {
+    key_state* key = &keys_[code];
 
     if (code == KEY_POWER) {
         if (key->down) {
@@ -471,7 +466,7 @@
                     LOGW("[%" PRId64 "] booting from charger mode\n", now);
                     property_set("sys.boot_from_charger_mode", "1");
                 } else {
-                    if (charger->batt_anim->cur_level >= charger->boot_min_cap) {
+                    if (batt_anim_.cur_level >= boot_min_cap_) {
                         LOGW("[%" PRId64 "] rebooting\n", now);
                         reboot(RB_AUTOBOOT);
                     } else {
@@ -485,18 +480,18 @@
                 /* if the key is pressed but timeout hasn't expired,
                  * make sure we wake up at the right-ish time to check
                  */
-                set_next_key_check(charger, key, POWER_ON_KEY_TIME);
+                SetNextKeyCheck(key, POWER_ON_KEY_TIME);
 
                 /* Turn on the display and kick animation on power-key press
                  * rather than on key release
                  */
-                kick_animation(charger->batt_anim);
+                kick_animation(&batt_anim_);
                 request_suspend(false);
             }
         } else {
             /* if the power key got released, force screen state cycle */
             if (key->pending) {
-                kick_animation(charger->batt_anim);
+                kick_animation(&batt_anim_);
                 request_suspend(false);
             }
         }
@@ -505,33 +500,35 @@
     key->pending = false;
 }
 
-static void handle_input_state(charger* charger, int64_t now) {
-    process_key(charger, KEY_POWER, now);
+void Charger::HandleInputState(int64_t now) {
+    ProcessKey(KEY_POWER, now);
 
-    if (charger->next_key_check != -1 && now > charger->next_key_check)
-        charger->next_key_check = -1;
+    if (next_key_check_ != -1 && now > next_key_check_) next_key_check_ = -1;
 }
 
-static void handle_power_supply_state(charger* charger, int64_t now) {
-    if (!charger->have_battery_state) return;
+void Charger::HandlePowerSupplyState(int64_t now) {
+    int timer_shutdown = UNPLUGGED_SHUTDOWN_TIME;
+    if (!have_battery_state_) return;
 
-    if (!charger->charger_connected) {
+    if (!charger_online()) {
         request_suspend(false);
-        if (charger->next_pwr_check == -1) {
+        if (next_pwr_check_ == -1) {
             /* Last cycle would have stopped at the extreme top of battery-icon
              * Need to show the correct level corresponding to capacity.
              *
-             * Reset next_screen_transition to update screen immediately.
+             * Reset next_screen_transition_ to update screen immediately.
              * Reset & kick animation to show complete animation cycles
              * when charger disconnected.
              */
-            charger->next_screen_transition = now - 1;
-            reset_animation(charger->batt_anim);
-            kick_animation(charger->batt_anim);
-            charger->next_pwr_check = now + UNPLUGGED_SHUTDOWN_TIME;
+            timer_shutdown =
+                    property_get_int32(UNPLUGGED_SHUTDOWN_TIME_PROP, UNPLUGGED_SHUTDOWN_TIME);
+            next_screen_transition_ = now - 1;
+            reset_animation(&batt_anim_);
+            kick_animation(&batt_anim_);
+            next_pwr_check_ = now + timer_shutdown;
             LOGW("[%" PRId64 "] device unplugged: shutting down in %" PRId64 " (@ %" PRId64 ")\n",
-                 now, (int64_t)UNPLUGGED_SHUTDOWN_TIME, charger->next_pwr_check);
-        } else if (now >= charger->next_pwr_check) {
+                 now, (int64_t)timer_shutdown, next_pwr_check_);
+        } else if (now >= next_pwr_check_) {
             LOGW("[%" PRId64 "] shutting down\n", now);
             reboot(RB_POWER_OFF);
         } else {
@@ -539,64 +536,60 @@
         }
     } else {
         /* online supply present, reset shutdown timer if set */
-        if (charger->next_pwr_check != -1) {
-            /* Reset next_screen_transition to update screen immediately.
+        if (next_pwr_check_ != -1) {
+            /* Reset next_screen_transition_ to update screen immediately.
              * Reset & kick animation to show complete animation cycles
              * when charger connected again.
              */
             request_suspend(false);
-            charger->next_screen_transition = now - 1;
-            reset_animation(charger->batt_anim);
-            kick_animation(charger->batt_anim);
+            next_screen_transition_ = now - 1;
+            reset_animation(&batt_anim_);
+            kick_animation(&batt_anim_);
             LOGW("[%" PRId64 "] device plugged in: shutdown cancelled\n", now);
         }
-        charger->next_pwr_check = -1;
+        next_pwr_check_ = -1;
     }
 }
 
-void healthd_mode_charger_heartbeat() {
-    charger* charger = &charger_state;
+void Charger::Heartbeat() {
+    // charger* charger = &charger_state;
     int64_t now = curr_time_ms();
 
-    handle_input_state(charger, now);
-    handle_power_supply_state(charger, now);
+    HandleInputState(now);
+    HandlePowerSupplyState(now);
 
     /* do screen update last in case any of the above want to start
      * screen transitions (animations, etc)
      */
-    update_screen_state(charger, now);
+    UpdateScreenState(now);
 }
 
-void healthd_mode_charger_battery_update(android::BatteryProperties* props) {
-    charger* charger = &charger_state;
+void Charger::OnHealthInfoChanged(const HealthInfo_2_1& health_info) {
+    set_charger_online(health_info);
 
-    charger->charger_connected =
-        props->chargerAcOnline || props->chargerUsbOnline || props->chargerWirelessOnline;
-
-    if (!charger->have_battery_state) {
-        charger->have_battery_state = true;
-        charger->next_screen_transition = curr_time_ms() - 1;
+    if (!have_battery_state_) {
+        have_battery_state_ = true;
+        next_screen_transition_ = curr_time_ms() - 1;
         request_suspend(false);
-        reset_animation(charger->batt_anim);
-        kick_animation(charger->batt_anim);
+        reset_animation(&batt_anim_);
+        kick_animation(&batt_anim_);
     }
-    batt_prop = props;
+    health_info_ = health_info.legacy.legacy;
+
+    AdjustWakealarmPeriods(charger_online());
 }
 
-int healthd_mode_charger_preparetowait(void) {
-    charger* charger = &charger_state;
+int Charger::PrepareToWait(void) {
     int64_t now = curr_time_ms();
     int64_t next_event = INT64_MAX;
     int64_t timeout;
 
     LOGV("[%" PRId64 "] next screen: %" PRId64 " next key: %" PRId64 " next pwr: %" PRId64 "\n",
-         now, charger->next_screen_transition, charger->next_key_check, charger->next_pwr_check);
+         now, next_screen_transition_, next_key_check_, next_pwr_check_);
 
-    if (charger->next_screen_transition != -1) next_event = charger->next_screen_transition;
-    if (charger->next_key_check != -1 && charger->next_key_check < next_event)
-        next_event = charger->next_key_check;
-    if (charger->next_pwr_check != -1 && charger->next_pwr_check < next_event)
-        next_event = charger->next_pwr_check;
+    if (next_screen_transition_ != -1) next_event = next_screen_transition_;
+    if (next_key_check_ != -1 && next_key_check_ < next_event) next_event = next_key_check_;
+    if (next_pwr_check_ != -1 && next_pwr_check_ < next_event) next_event = next_pwr_check_;
 
     if (next_event != -1 && next_event != INT64_MAX)
         timeout = max(0, next_event - now);
@@ -606,32 +599,32 @@
     return (int)timeout;
 }
 
-static int input_callback(charger* charger, int fd, unsigned int epevents) {
+int Charger::InputCallback(int fd, unsigned int epevents) {
     input_event ev;
     int ret;
 
     ret = ev_get_input(fd, epevents, &ev);
     if (ret) return -1;
-    update_input_state(charger, &ev);
+    UpdateInputState(&ev);
     return 0;
 }
 
-static void charger_event_handler(uint32_t /*epevents*/) {
+static void charger_event_handler(HealthLoop* /*charger_loop*/, uint32_t /*epevents*/) {
     int ret;
 
     ret = ev_wait(-1);
     if (!ret) ev_dispatch();
 }
 
-animation* init_animation() {
+void Charger::InitAnimation() {
     bool parse_success;
 
     std::string content;
     if (base::ReadFileToString(product_animation_desc_path, &content)) {
-        parse_success = parse_animation_desc(content, &battery_animation);
-        battery_animation.set_resource_root(product_animation_root);
+        parse_success = parse_animation_desc(content, &batt_anim_);
+        batt_anim_.set_resource_root(product_animation_root);
     } else if (base::ReadFileToString(animation_desc_path, &content)) {
-        parse_success = parse_animation_desc(content, &battery_animation);
+        parse_success = parse_animation_desc(content, &batt_anim_);
     } else {
         LOGW("Could not open animation description at %s\n", animation_desc_path);
         parse_success = false;
@@ -639,41 +632,36 @@
 
     if (!parse_success) {
         LOGW("Could not parse animation description. Using default animation.\n");
-        battery_animation = BASE_ANIMATION;
-        battery_animation.animation_file.assign("charger/battery_scale");
-        battery_animation.frames = default_animation_frames;
-        battery_animation.num_frames = ARRAY_SIZE(default_animation_frames);
+        batt_anim_ = BASE_ANIMATION;
+        batt_anim_.animation_file.assign("charger/battery_scale");
+        InitDefaultAnimationFrames();
+        batt_anim_.frames = owned_frames_.data();
+        batt_anim_.num_frames = owned_frames_.size();
     }
-    if (battery_animation.fail_file.empty()) {
-        battery_animation.fail_file.assign("charger/battery_fail");
+    if (batt_anim_.fail_file.empty()) {
+        batt_anim_.fail_file.assign("charger/battery_fail");
     }
 
     LOGV("Animation Description:\n");
-    LOGV("  animation: %d %d '%s' (%d)\n", battery_animation.num_cycles,
-         battery_animation.first_frame_repeats, battery_animation.animation_file.c_str(),
-         battery_animation.num_frames);
-    LOGV("  fail_file: '%s'\n", battery_animation.fail_file.c_str());
-    LOGV("  clock: %d %d %d %d %d %d '%s'\n", battery_animation.text_clock.pos_x,
-         battery_animation.text_clock.pos_y, battery_animation.text_clock.color_r,
-         battery_animation.text_clock.color_g, battery_animation.text_clock.color_b,
-         battery_animation.text_clock.color_a, battery_animation.text_clock.font_file.c_str());
-    LOGV("  percent: %d %d %d %d %d %d '%s'\n", battery_animation.text_percent.pos_x,
-         battery_animation.text_percent.pos_y, battery_animation.text_percent.color_r,
-         battery_animation.text_percent.color_g, battery_animation.text_percent.color_b,
-         battery_animation.text_percent.color_a, battery_animation.text_percent.font_file.c_str());
-    for (int i = 0; i < battery_animation.num_frames; i++) {
-        LOGV("  frame %.2d: %d %d %d\n", i, battery_animation.frames[i].disp_time,
-             battery_animation.frames[i].min_level, battery_animation.frames[i].max_level);
+    LOGV("  animation: %d %d '%s' (%d)\n", batt_anim_.num_cycles, batt_anim_.first_frame_repeats,
+         batt_anim_.animation_file.c_str(), batt_anim_.num_frames);
+    LOGV("  fail_file: '%s'\n", batt_anim_.fail_file.c_str());
+    LOGV("  clock: %d %d %d %d %d %d '%s'\n", batt_anim_.text_clock.pos_x,
+         batt_anim_.text_clock.pos_y, batt_anim_.text_clock.color_r, batt_anim_.text_clock.color_g,
+         batt_anim_.text_clock.color_b, batt_anim_.text_clock.color_a,
+         batt_anim_.text_clock.font_file.c_str());
+    LOGV("  percent: %d %d %d %d %d %d '%s'\n", batt_anim_.text_percent.pos_x,
+         batt_anim_.text_percent.pos_y, batt_anim_.text_percent.color_r,
+         batt_anim_.text_percent.color_g, batt_anim_.text_percent.color_b,
+         batt_anim_.text_percent.color_a, batt_anim_.text_percent.font_file.c_str());
+    for (int i = 0; i < batt_anim_.num_frames; i++) {
+        LOGV("  frame %.2d: %d %d %d\n", i, batt_anim_.frames[i].disp_time,
+             batt_anim_.frames[i].min_level, batt_anim_.frames[i].max_level);
     }
-
-    return &battery_animation;
 }
 
-void healthd_mode_charger_init(struct healthd_config* config) {
-    using android::hardware::health::V2_0::implementation::Health;
-
+void Charger::Init(struct healthd_config* config) {
     int ret;
-    charger* charger = &charger_state;
     int i;
     int epollfd;
 
@@ -681,22 +669,22 @@
 
     LOGW("--------------- STARTING CHARGER MODE ---------------\n");
 
-    ret = ev_init(std::bind(&input_callback, charger, std::placeholders::_1, std::placeholders::_2));
+    ret = ev_init(
+            std::bind(&Charger::InputCallback, this, std::placeholders::_1, std::placeholders::_2));
     if (!ret) {
         epollfd = ev_get_epollfd();
-        healthd_register_event(epollfd, charger_event_handler, EVENT_WAKEUP_FD);
+        RegisterEvent(epollfd, &charger_event_handler, EVENT_WAKEUP_FD);
     }
 
-    animation* anim = init_animation();
-    charger->batt_anim = anim;
+    InitAnimation();
 
-    ret = res_create_display_surface(anim->fail_file.c_str(), &charger->surf_unknown);
+    ret = res_create_display_surface(batt_anim_.fail_file.c_str(), &surf_unknown_);
     if (ret < 0) {
         LOGE("Cannot load custom battery_fail image. Reverting to built in: %d\n", ret);
-        ret = res_create_display_surface("charger/battery_fail", &charger->surf_unknown);
+        ret = res_create_display_surface("charger/battery_fail", &surf_unknown_);
         if (ret < 0) {
             LOGE("Cannot load built in battery_fail image\n");
-            charger->surf_unknown = NULL;
+            surf_unknown_ = NULL;
         }
     }
 
@@ -704,49 +692,41 @@
     int scale_count;
     int scale_fps;  // Not in use (charger/battery_scale doesn't have FPS text
                     // chunk). We are using hard-coded frame.disp_time instead.
-    ret = res_create_multi_display_surface(anim->animation_file.c_str(), &scale_count, &scale_fps,
-                                           &scale_frames);
+    ret = res_create_multi_display_surface(batt_anim_.animation_file.c_str(), &scale_count,
+                                           &scale_fps, &scale_frames);
     if (ret < 0) {
         LOGE("Cannot load battery_scale image\n");
-        anim->num_frames = 0;
-        anim->num_cycles = 1;
-    } else if (scale_count != anim->num_frames) {
+        batt_anim_.num_frames = 0;
+        batt_anim_.num_cycles = 1;
+    } else if (scale_count != batt_anim_.num_frames) {
         LOGE("battery_scale image has unexpected frame count (%d, expected %d)\n", scale_count,
-             anim->num_frames);
-        anim->num_frames = 0;
-        anim->num_cycles = 1;
+             batt_anim_.num_frames);
+        batt_anim_.num_frames = 0;
+        batt_anim_.num_cycles = 1;
     } else {
-        for (i = 0; i < anim->num_frames; i++) {
-            anim->frames[i].surface = scale_frames[i];
+        for (i = 0; i < batt_anim_.num_frames; i++) {
+            batt_anim_.frames[i].surface = scale_frames[i];
         }
     }
-    ev_sync_key_state(
-        std::bind(&set_key_callback, charger, std::placeholders::_1, std::placeholders::_2));
+    ev_sync_key_state(std::bind(&Charger::SetKeyCallback, this, std::placeholders::_1,
+                                std::placeholders::_2));
 
-    charger->next_screen_transition = -1;
-    charger->next_key_check = -1;
-    charger->next_pwr_check = -1;
-    charger->wait_batt_level_timestamp = 0;
+    next_screen_transition_ = -1;
+    next_key_check_ = -1;
+    next_pwr_check_ = -1;
+    wait_batt_level_timestamp_ = 0;
 
-    // Initialize Health implementation (which initializes the internal BatteryMonitor).
-    Health::initInstance(config);
+    // Retrieve healthd_config from the existing health HAL.
+    HalHealthLoop::Init(config);
 
-    healthd_config = config;
-    charger->boot_min_cap = config->boot_min_cap;
+    boot_min_cap_ = config->boot_min_cap;
 }
 
-static struct healthd_mode_ops charger_ops = {
-        .init = healthd_mode_charger_init,
-        .preparetowait = healthd_mode_charger_preparetowait,
-        .heartbeat = healthd_mode_charger_heartbeat,
-        .battery_update = healthd_mode_charger_battery_update,
-};
+}  // namespace android
 
 int healthd_charger_main(int argc, char** argv) {
     int ch;
 
-    healthd_mode_ops = &charger_ops;
-
     while ((ch = getopt(argc, argv, "cr")) != -1) {
         switch (ch) {
             case 'c':
@@ -762,5 +742,6 @@
         }
     }
 
-    return healthd_main();
+    Charger charger(GetHealthServiceOrDefault());
+    return charger.StartLoop();
 }
diff --git a/healthd/healthd_mode_charger.h b/healthd/healthd_mode_charger.h
index 2f0c9f2..6e569ee 100644
--- a/healthd/healthd_mode_charger.h
+++ b/healthd/healthd_mode_charger.h
@@ -16,4 +16,72 @@
 
 #pragma once
 
+#include <linux/input.h>
+
+#include <memory>
+#include <vector>
+
+#include <android/hardware/health/2.0/IHealthInfoCallback.h>
+#include <android/hardware/health/2.1/IHealth.h>
+#include <health2impl/HalHealthLoop.h>
+
+#include "animation.h"
+
+class GRSurface;
+class HealthdDraw;
+
+namespace android {
+struct key_state {
+    bool pending;
+    bool down;
+    int64_t timestamp;
+};
+
+class Charger : public ::android::hardware::health::V2_1::implementation::HalHealthLoop {
+  public:
+    using HealthInfo_1_0 = android::hardware::health::V1_0::HealthInfo;
+    using HealthInfo_2_1 = android::hardware::health::V2_1::HealthInfo;
+
+    Charger(const sp<android::hardware::health::V2_1::IHealth>& service);
+    ~Charger();
+
+  protected:
+    // HealthLoop overrides.
+    void Heartbeat() override;
+    int PrepareToWait() override;
+    void Init(struct healthd_config* config) override;
+    // HalHealthLoop overrides
+    void OnHealthInfoChanged(const HealthInfo_2_1& health_info) override;
+
+  private:
+    void InitDefaultAnimationFrames();
+    void UpdateScreenState(int64_t now);
+    int SetKeyCallback(int code, int value);
+    void UpdateInputState(input_event* ev);
+    void SetNextKeyCheck(key_state* key, int64_t timeout);
+    void ProcessKey(int code, int64_t now);
+    void HandleInputState(int64_t now);
+    void HandlePowerSupplyState(int64_t now);
+    int InputCallback(int fd, unsigned int epevents);
+    void InitAnimation();
+
+    bool have_battery_state_ = false;
+    bool screen_blanked_ = false;
+    int64_t next_screen_transition_ = 0;
+    int64_t next_key_check_ = 0;
+    int64_t next_pwr_check_ = 0;
+    int64_t wait_batt_level_timestamp_ = 0;
+
+    key_state keys_[KEY_MAX + 1] = {};
+
+    animation batt_anim_;
+    GRSurface* surf_unknown_ = nullptr;
+    int boot_min_cap_ = 0;
+
+    HealthInfo_1_0 health_info_ = {};
+    std::unique_ptr<HealthdDraw> healthd_draw_;
+    std::vector<animation::frame> owned_frames_;
+};
+}  // namespace android
+
 int healthd_charger_main(int argc, char** argv);
diff --git a/healthd/healthd_mode_charger_nops.cpp b/healthd/healthd_mode_charger_nops.cpp
index bcc04d5..9fe381e 100644
--- a/healthd/healthd_mode_charger_nops.cpp
+++ b/healthd/healthd_mode_charger_nops.cpp
@@ -16,45 +16,14 @@
 
 #include "healthd_mode_charger_nops.h"
 
-#include <health2/Health.h>
-#include <healthd/healthd.h>
+#include <health2impl/HalHealthLoop.h>
 
-#include <stdlib.h>
-#include <string.h>
+#include "charger_utils.h"
 
-using namespace android;
-
-// main healthd loop
-extern int healthd_main(void);
-
-// NOPs for modes that need no special action
-
-static void healthd_mode_nop_init(struct healthd_config* config);
-static int healthd_mode_nop_preparetowait(void);
-static void healthd_mode_nop_heartbeat(void);
-static void healthd_mode_nop_battery_update(struct android::BatteryProperties* props);
-
-static struct healthd_mode_ops healthd_nops = {
-        .init = healthd_mode_nop_init,
-        .preparetowait = healthd_mode_nop_preparetowait,
-        .heartbeat = healthd_mode_nop_heartbeat,
-        .battery_update = healthd_mode_nop_battery_update,
-};
-
-static void healthd_mode_nop_init(struct healthd_config* config) {
-    using android::hardware::health::V2_0::implementation::Health;
-    Health::initInstance(config);
-}
-
-static int healthd_mode_nop_preparetowait(void) {
-    return -1;
-}
-
-static void healthd_mode_nop_heartbeat(void) {}
-
-static void healthd_mode_nop_battery_update(struct android::BatteryProperties* /*props*/) {}
+using android::hardware::health::GetHealthServiceOrDefault;
+using android::hardware::health::V2_1::implementation::HalHealthLoop;
 
 int healthd_charger_nops(int /* argc */, char** /* argv */) {
-    healthd_mode_ops = &healthd_nops;
-    return healthd_main();
+    HalHealthLoop charger("charger", GetHealthServiceOrDefault());
+    return charger.StartLoop();
 }
diff --git a/healthd/include/healthd/BatteryMonitor.h b/healthd/include/healthd/BatteryMonitor.h
index 4d1d53f..fadb5a5 100644
--- a/healthd/include/healthd/BatteryMonitor.h
+++ b/healthd/include/healthd/BatteryMonitor.h
@@ -17,6 +17,8 @@
 #ifndef HEALTHD_BATTERYMONITOR_H
 #define HEALTHD_BATTERYMONITOR_H
 
+#include <memory>
+
 #include <batteryservice/BatteryService.h>
 #include <utils/String8.h>
 #include <utils/Vector.h>
@@ -24,6 +26,19 @@
 #include <healthd/healthd.h>
 
 namespace android {
+namespace hardware {
+namespace health {
+namespace V1_0 {
+struct HealthInfo;
+}  // namespace V1_0
+namespace V2_0 {
+struct HealthInfo;
+}  // namespace V2_0
+namespace V2_1 {
+struct HealthInfo;
+}  // namespace V2_1
+}  // namespace health
+}  // namespace hardware
 
 class BatteryMonitor {
   public:
@@ -37,12 +52,19 @@
     };
 
     BatteryMonitor();
+    ~BatteryMonitor();
     void init(struct healthd_config *hc);
-    bool update(void);
     int getChargeStatus();
     status_t getProperty(int id, struct BatteryProperty *val);
     void dumpState(int fd);
-    friend struct BatteryProperties getBatteryProperties(BatteryMonitor* batteryMonitor);
+
+    const android::hardware::health::V1_0::HealthInfo& getHealthInfo_1_0() const;
+    const android::hardware::health::V2_0::HealthInfo& getHealthInfo_2_0() const;
+    const android::hardware::health::V2_1::HealthInfo& getHealthInfo_2_1() const;
+
+    void updateValues(void);
+    void logValues(void);
+    bool isChargerOnline();
 
   private:
     struct healthd_config *mHealthdConfig;
@@ -50,14 +72,13 @@
     bool mBatteryDevicePresent;
     int mBatteryFixedCapacity;
     int mBatteryFixedTemperature;
-    struct BatteryProperties props;
+    std::unique_ptr<android::hardware::health::V2_1::HealthInfo> mHealthInfo;
 
-    int getBatteryStatus(const char* status);
-    int getBatteryHealth(const char* status);
     int readFromFile(const String8& path, std::string* buf);
     PowerSupplyType readPowerSupplyType(const String8& path);
     bool getBooleanField(const String8& path);
     int getIntField(const String8& path);
+    bool isScopedPowerSupply(const char* name);
 };
 
 }; // namespace android
diff --git a/healthd/include/healthd/healthd.h b/healthd/include/healthd/healthd.h
index a900071..706c332 100644
--- a/healthd/include/healthd/healthd.h
+++ b/healthd/include/healthd/healthd.h
@@ -69,6 +69,9 @@
     android::String8 batteryChargeCounterPath;
     android::String8 batteryFullChargePath;
     android::String8 batteryCycleCountPath;
+    android::String8 batteryCapacityLevelPath;
+    android::String8 batteryChargeTimeToFullNowPath;
+    android::String8 batteryFullChargeDesignCapacityUahPath;
 
     int (*energyCounter)(int64_t *);
     int boot_min_cap;
diff --git a/init/Android.bp b/init/Android.bp
index 6be7290..4865694 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -14,6 +14,63 @@
 // limitations under the License.
 //
 
+init_common_sources = [
+    "action.cpp",
+    "action_manager.cpp",
+    "action_parser.cpp",
+    "capabilities.cpp",
+    "epoll.cpp",
+    "import_parser.cpp",
+    "interface_utils.cpp",
+    "keychords.cpp",
+    "parser.cpp",
+    "property_type.cpp",
+    "rlimit_parser.cpp",
+    "service.cpp",
+    "service_list.cpp",
+    "service_parser.cpp",
+    "service_utils.cpp",
+    "subcontext.cpp",
+    "subcontext.proto",
+    "tokenizer.cpp",
+    "util.cpp",
+]
+init_device_sources = [
+    "block_dev_initializer.cpp",
+    "bootchart.cpp",
+    "builtins.cpp",
+    "devices.cpp",
+    "firmware_handler.cpp",
+    "first_stage_console.cpp",
+    "first_stage_init.cpp",
+    "first_stage_mount.cpp",
+    "fscrypt_init_extensions.cpp",
+    "init.cpp",
+    "lmkd_service.cpp",
+    "modalias_handler.cpp",
+    "mount_handler.cpp",
+    "mount_namespace.cpp",
+    "persistent_properties.cpp",
+    "persistent_properties.proto",
+    "property_service.cpp",
+    "property_service.proto",
+    "reboot.cpp",
+    "reboot_utils.cpp",
+    "security.cpp",
+    "selabel.cpp",
+    "selinux.cpp",
+    "sigchld_handler.cpp",
+    "switch_root.cpp",
+    "uevent_listener.cpp",
+    "ueventd.cpp",
+    "ueventd_parser.cpp",
+]
+init_host_sources = [
+    "check_builtins.cpp",
+    "host_import_parser.cpp",
+    "host_init_verifier.cpp",
+]
+
 cc_defaults {
     name: "init_defaults",
     cpp_std: "experimental",
@@ -26,16 +83,21 @@
         "-Wextra",
         "-Wno-unused-parameter",
         "-Werror",
+        "-Wthread-safety",
+        "-DALLOW_FIRST_STAGE_CONSOLE=0",
         "-DALLOW_LOCAL_PROP_OVERRIDE=0",
         "-DALLOW_PERMISSIVE_SELINUX=0",
         "-DREBOOT_BOOTLOADER_ON_PANIC=0",
         "-DWORLD_WRITABLE_KMSG=0",
         "-DDUMP_ON_UMOUNT_FAILURE=0",
         "-DSHUTDOWN_ZERO_TIMEOUT=0",
+        "-DINIT_FULL_SOURCES",
     ],
     product_variables: {
         debuggable: {
             cppflags: [
+                "-UALLOW_FIRST_STAGE_CONSOLE",
+                "-DALLOW_FIRST_STAGE_CONSOLE=1",
                 "-UALLOW_LOCAL_PROP_OVERRIDE",
                 "-DALLOW_LOCAL_PROP_OVERRIDE=1",
                 "-UALLOW_PERMISSIVE_SELINUX",
@@ -59,25 +121,25 @@
         },
     },
     static_libs: [
-        "libseccomp_policy",
         "libavb",
         "libc++fs",
         "libcgrouprc_format",
+        "liblmkd_utils",
+        "libmodprobe",
         "libprotobuf-cpp-lite",
         "libpropertyinfoserializer",
         "libpropertyinfoparser",
+        "libsnapshot_init",
+        "lib_apex_manifest_proto_lite",
     ],
     shared_libs: [
         "libbacktrace",
         "libbase",
-        "libbinder",
         "libbootloader_message",
         "libcutils",
-        "libcrypto",
         "libdl",
         "libext4_utils",
         "libfs_mgr",
-        "libfscrypt",
         "libgsi",
         "libhidl-gen-utils",
         "libkeyutils",
@@ -90,54 +152,22 @@
         "libutils",
     ],
     bootstrap: true,
+    visibility: [":__subpackages__"],
 }
 
 cc_library_static {
     name: "libinit",
     recovery_available: true,
-    defaults: ["init_defaults", "selinux_policy_version"],
-    srcs: [
-        "action.cpp",
-        "action_manager.cpp",
-        "action_parser.cpp",
-        "boringssl_self_test.cpp",
-        "bootchart.cpp",
-        "builtins.cpp",
-        "capabilities.cpp",
-        "descriptors.cpp",
-        "devices.cpp",
-        "epoll.cpp",
-        "firmware_handler.cpp",
-        "first_stage_init.cpp",
-        "first_stage_mount.cpp",
-        "import_parser.cpp",
-        "init.cpp",
-        "keychords.cpp",
-        "modalias_handler.cpp",
-        "mount_handler.cpp",
-        "mount_namespace.cpp",
-        "parser.cpp",
-        "persistent_properties.cpp",
-        "persistent_properties.proto",
-        "property_service.cpp",
-        "property_type.cpp",
-        "reboot.cpp",
-        "reboot_utils.cpp",
-        "security.cpp",
-        "selinux.cpp",
-        "service.cpp",
-        "sigchld_handler.cpp",
-        "subcontext.cpp",
-        "subcontext.proto",
-        "switch_root.cpp",
-        "rlimit_parser.cpp",
-        "tokenizer.cpp",
-        "uevent_listener.cpp",
-        "ueventd.cpp",
-        "ueventd_parser.cpp",
-        "util.cpp",
+    defaults: [
+        "init_defaults",
+        "selinux_policy_version",
     ],
-    whole_static_libs: ["libcap", "com.android.sysprop.apex"],
+    srcs: init_common_sources + init_device_sources,
+    whole_static_libs: [
+        "libcap",
+        "com.android.sysprop.apex",
+        "com.android.sysprop.init",
+    ],
     header_libs: ["bootimg_headers"],
     proto: {
         type: "lite",
@@ -147,11 +177,21 @@
     target: {
         recovery: {
             cflags: ["-DRECOVERY"],
-            exclude_shared_libs: ["libbinder", "libutils"],
+            exclude_shared_libs: [
+                "libbinder",
+                "libutils",
+            ],
         },
     },
 }
 
+phony {
+    name: "init",
+    required: [
+        "init_second_stage",
+    ],
+}
+
 cc_binary {
     name: "init_second_stage",
     recovery_available: true,
@@ -160,36 +200,53 @@
     static_libs: ["libinit"],
     required: [
         "e2fsdroid",
+        "init.rc",
         "mke2fs",
         "sload_f2fs",
         "make_f2fs",
+        "ueventd.rc",
     ],
     srcs: ["main.cpp"],
     symlinks: ["ueventd"],
     target: {
         recovery: {
             cflags: ["-DRECOVERY"],
-            exclude_shared_libs: ["libbinder", "libutils"],
+            exclude_shared_libs: [
+                "libbinder",
+                "libutils",
+            ],
         },
     },
-    ldflags: ["-Wl,--rpath,/system/${LIB}/bootstrap"],
 }
 
 // Tests
 // ------------------------------------------------------------------------------
 
 cc_test {
-    name: "init_tests",
+    name: "CtsInitTestCases",
     defaults: ["init_defaults"],
-    compile_multilib: "first",
+    require_root: true,
+
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
+
     srcs: [
         "devices_test.cpp",
+        "epoll_test.cpp",
+        "firmware_handler_test.cpp",
         "init_test.cpp",
         "keychords_test.cpp",
+        "oneshot_on_test.cpp",
         "persistent_properties_test.cpp",
         "property_service_test.cpp",
         "property_type_test.cpp",
-        "result_test.cpp",
         "rlimit_parser_test.cpp",
         "service_test.cpp",
         "subcontext_test.cpp",
@@ -199,7 +256,12 @@
         "util_test.cpp",
     ],
     static_libs: ["libinit"],
-    test_suites: ["device-tests"],
+
+    test_suites: [
+        "cts",
+        "device-tests",
+        "vts10",
+    ],
 }
 
 cc_benchmark {
@@ -211,14 +273,49 @@
     static_libs: ["libinit"],
 }
 
+cc_defaults {
+    name: "libinit_test_utils_libraries_defaults",
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libselinux",
+        "libhidl-gen-utils",
+        "liblog",
+        "libprocessgroup",
+        "libprotobuf-cpp-lite",
+    ],
+}
+
+cc_library_static {
+    name: "libinit_test_utils",
+    defaults: ["libinit_test_utils_libraries_defaults"],
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wno-unused-parameter",
+        "-Werror",
+    ],
+    srcs: init_common_sources + [
+        "test_utils/service_utils.cpp",
+    ],
+    whole_static_libs: [
+        "libcap",
+    ],
+    export_include_dirs: ["test_utils/include"], // for tests
+}
+
 // Host Verifier
 // ------------------------------------------------------------------------------
 
 genrule {
     name: "generated_stub_builtin_function_map",
+    tool_files: ["host_builtin_map.py"],
     out: ["generated_stub_builtin_function_map.h"],
-    srcs: ["builtins.cpp"],
-    cmd: "sed -n '/Builtin-function-map start/{:a;n;/Builtin-function-map end/q;p;ba}' $(in) | sed -e 's/do_[^}]*/do_stub/g' > $(out)",
+    srcs: [
+        "builtins.cpp",
+        "check_builtins.cpp",
+    ],
+    cmd: "$(location host_builtin_map.py) --builtins $(location builtins.cpp) --check_builtins $(location check_builtins.cpp) > $(out)",
 }
 
 cc_binary {
@@ -234,41 +331,25 @@
     static_libs: [
         "libbase",
         "libselinux",
+        "libpropertyinfoserializer",
+        "libpropertyinfoparser",
     ],
     whole_static_libs: ["libcap"],
     shared_libs: [
-        "libprotobuf-cpp-lite",
-        "libhidl-gen-utils",
-        "libprocessgroup",
-        "liblog",
         "libcutils",
+        "libhidl-gen-utils",
+        "libhidlmetadata",
+        "liblog",
+        "libprocessgroup",
+        "libprotobuf-cpp-lite",
     ],
-    srcs: [
-        "action.cpp",
-        "action_manager.cpp",
-        "action_parser.cpp",
-        "capabilities.cpp",
-        "descriptors.cpp",
-        "epoll.cpp",
-        "keychords.cpp",
-        "import_parser.cpp",
-        "host_import_parser.cpp",
-        "host_init_verifier.cpp",
-        "host_init_stubs.cpp",
-        "parser.cpp",
-        "rlimit_parser.cpp",
-        "tokenizer.cpp",
-        "service.cpp",
-        "subcontext.cpp",
-        "subcontext.proto",
-        "util.cpp",
-    ],
+    srcs: init_common_sources + init_host_sources,
     proto: {
         type: "lite",
     },
     generated_headers: [
         "generated_stub_builtin_function_map",
-        "generated_android_ids"
+        "generated_android_ids",
     ],
     target: {
         android: {
@@ -279,5 +360,3 @@
         },
     },
 }
-
-subdirs = ["*"]
diff --git a/init/Android.mk b/init/Android.mk
index c4f7d34..416b732 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -8,6 +8,7 @@
 
 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
 init_options += \
+    -DALLOW_FIRST_STAGE_CONSOLE=1 \
     -DALLOW_LOCAL_PROP_OVERRIDE=1 \
     -DALLOW_PERMISSIVE_SELINUX=1 \
     -DREBOOT_BOOTLOADER_ON_PANIC=1 \
@@ -15,6 +16,7 @@
     -DDUMP_ON_UMOUNT_FAILURE=1
 else
 init_options += \
+    -DALLOW_FIRST_STAGE_CONSOLE=0 \
     -DALLOW_LOCAL_PROP_OVERRIDE=0 \
     -DALLOW_PERMISSIVE_SELINUX=0 \
     -DREBOOT_BOOTLOADER_ON_PANIC=0 \
@@ -46,12 +48,14 @@
 include $(CLEAR_VARS)
 LOCAL_CPPFLAGS := $(init_cflags)
 LOCAL_SRC_FILES := \
+    block_dev_initializer.cpp \
     devices.cpp \
+    first_stage_console.cpp \
     first_stage_init.cpp \
     first_stage_main.cpp \
     first_stage_mount.cpp \
-    mount_namespace.cpp \
     reboot_utils.cpp \
+    selabel.cpp \
     selinux.cpp \
     switch_root.cpp \
     uevent_listener.cpp \
@@ -70,9 +74,8 @@
 LOCAL_REQUIRED_MODULES := \
    adb_debug.prop \
 
-# Set up the same mount points on the ramdisk that system-as-root contains.
+# Set up the directories that first stage init mounts on.
 LOCAL_POST_INSTALL_CMD := mkdir -p \
-    $(TARGET_RAMDISK_OUT)/apex \
     $(TARGET_RAMDISK_OUT)/debug_ramdisk \
     $(TARGET_RAMDISK_OUT)/dev \
     $(TARGET_RAMDISK_OUT)/mnt \
@@ -88,8 +91,6 @@
     libsquashfs_utils \
     liblogwrap \
     libext4_utils \
-    libfscrypt \
-    libseccomp_policy \
     libcrypto_utils \
     libsparse \
     libavb \
@@ -98,7 +99,7 @@
     libcutils \
     libbase \
     liblog \
-    libcrypto \
+    libcrypto_static \
     libdl \
     libz \
     libselinux \
@@ -106,9 +107,12 @@
     libgsi \
     libcom.android.sysprop.apex \
     liblzma \
-    libdexfile_support \
-    libunwindstack \
-    libbacktrace \
+    libunwindstack_no_dex \
+    libbacktrace_no_dex \
+    libmodprobe \
+    libext2_uuid \
+    libprotobuf-cpp-lite \
+    libsnapshot_init \
 
 LOCAL_SANITIZE := signed-integer-overflow
 # First stage init is weird: it may start without stdout/stderr, and no /proc.
diff --git a/init/AndroidTest.xml b/init/AndroidTest.xml
new file mode 100644
index 0000000..95f97e3
--- /dev/null
+++ b/init/AndroidTest.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Config for CTS init test cases">
+    <option name="test-suite-tag" value="cts" />
+    <option name="config-descriptor:metadata" key="component" value="systems" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+        <option name="cleanup" value="true" />
+        <option name="push" value="CtsInitTestCases->/data/local/tmp/CtsInitTestCases" />
+        <option name="append-bitness" value="true" />
+    </target_preparer>
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="CtsInitTestCases" />
+        <option name="runtime-hint" value="65s" />
+    </test>
+    <!-- Controller that will skip the module if a native bridge situation is detected -->
+    <!-- For example: module wants to run arm32 and device is x86 -->
+    <object type="module_controller" class="com.android.tradefed.testtype.suite.module.NativeBridgeModuleController" />
+</configuration>
diff --git a/init/README.md b/init/README.md
index 1b8b848..6f2c01f 100644
--- a/init/README.md
+++ b/init/README.md
@@ -35,29 +35,19 @@
 at the beginning of its execution.  It is responsible for the initial
 set up of the system.
 
-Devices that mount /system, /vendor through the first stage mount mechanism
-load all of the files contained within the
+Init loads all of the files contained within the
 /{system,vendor,odm}/etc/init/ directories immediately after loading
 the primary /init.rc.  This is explained in more details in the
 Imports section of this file.
 
-Legacy devices without the first stage mount mechanism do the following:
-1. /init.rc imports /init.${ro.hardware}.rc which is the primary
-   vendor supplied .rc file.
-2. During the mount\_all command, the init executable loads all of the
-   files contained within the /{system,vendor,odm}/etc/init/ directories.
-   These directories are intended for all Actions and Services used after
-   file system mounting.
-
-One may specify paths in the mount\_all command line to have it import
-.rc files at the specified paths instead of the default ones listed above.
-This is primarily for supporting factory mode and other non-standard boot
-modes.  The three default paths should be used for the normal boot process.
+Legacy devices without the first stage mount mechanism previously were
+able to import init scripts during mount_all, however that is deprecated
+and not allowed for devices launching after Q.
 
 The intention of these directories is:
 
    1. /system/etc/init/ is for core system items such as
-      SurfaceFlinger, MediaService, and logcatd.
+      SurfaceFlinger, MediaService, and logd.
    2. /vendor/etc/init/ is for SoC vendor items such as actions or
       daemons needed for core SoC functionality.
    3. /odm/etc/init/ is for device manufacturer items such as
@@ -72,7 +62,7 @@
 init .rc file should additionally contain any actions associated with
 its service.
 
-An example is the logcatd.rc and Android.mk files located in the
+An example is the userdebug logcatd.rc and Android.mk files located in the
 system/core/logcat directory.  The LOCAL\_INIT\_RC macro in the
 Android.mk file places logcatd.rc in /system/etc/init/ during the
 build process.  Init loads logcatd.rc during the mount\_all command and
@@ -88,14 +78,6 @@
 conflict resolution when multiple services are added to the system, as
 each one will go into a separate file.
 
-There are two options "early" and "late" in mount\_all command
-which can be set after optional paths. With "--early" set, the
-init executable will skip mounting entries with "latemount" flag
-and triggering fs encryption state event. With "--late" set,
-init executable will only mount entries with "latemount" flag but skip
-importing rc files. By default, no option is set, and mount\_all will
-process all entries in the given fstab.
-
 Actions
 -------
 Actions are named sequences of commands.  Actions have a trigger which
@@ -188,6 +170,8 @@
   be changed by setting the "androidboot.console" kernel parameter. In
   all cases the leading "/dev/" should be omitted, so "/dev/tty0" would be
   specified as just "console tty0".
+  This option connects stdin, stdout, and stderr to the console. It is mutually exclusive with the
+  stdio_to_kmsg option, which only connects stdout and stderr to kmsg.
 
 `critical`
 > This is a device-critical service. If it exits more than four times in
@@ -214,9 +198,9 @@
 
 `interface <interface name> <instance name>`
 > Associates this service with a list of the HIDL services that it provides. The interface name
-  must be a fully-qualified name and not a value name. This is used to allow hwservicemanager to
-  lazily start services. When multiple interfaces are served, this tag should be used multiple
-  times.
+  must be a fully-qualified name and not a value name. For instance, this is used to allow
+  hwservicemanager to lazily start services. When multiple interfaces are served, this tag should
+  be used multiple times.
   For example: interface vendor.foo.bar@1.0::IBaz default
 
 `ioprio <class> <priority>`
@@ -281,6 +265,12 @@
 > Scheduling priority of the service process. This value has to be in range
   -20 to 19. Default priority is 0. Priority is set via setpriority().
 
+`reboot_on_failure <target>`
+> If this process cannot be started or if the process terminates with an exit code other than
+  CLD_EXITED or an status other than '0', reboot the system with the target specified in
+  _target_. _target_ takes the same format as the parameter to sys.powerctl. This is particularly
+  intended to be used with the `exec_start` builtin for any must-have checks during boot.
+
 `restart_period <seconds>`
 > If a non-oneshot service exits, it will be restarted at its start time plus
   this period. It defaults to 5s to rate limit crashing services.
@@ -317,13 +307,25 @@
   See the below section on debugging for how this can be used.
 
 `socket <name> <type> <perm> [ <user> [ <group> [ <seclabel> ] ] ]`
-> Create a unix domain socket named /dev/socket/_name_ and pass its fd to the
-  launched process.  _type_ must be "dgram", "stream" or "seqpacket".  User and
+> Create a UNIX domain socket named /dev/socket/_name_ and pass its fd to the
+  launched process.  _type_ must be "dgram", "stream" or "seqpacket".  _type_
+  may end with "+passcred" to enable SO_PASSCRED on the socket. User and
   group default to 0.  'seclabel' is the SELinux security context for the
   socket.  It defaults to the service security context, as specified by
   seclabel or computed based on the service executable file security context.
   For native executables see libcutils android\_get\_control\_socket().
 
+`stdio_to_kmsg`
+> Redirect stdout and stderr to /dev/kmsg_debug. This is useful for services that do not use native
+  Android logging during early boot and whose logs messages we want to capture. This is only enabled
+  when /dev/kmsg_debug is enabled, which is only enabled on userdebug and eng builds.
+  This is mutually exclusive with the console option, which additionally connects stdin to the
+  given console.
+
+`task_profiles <profile> [ <profile>\* ]`
+> Set task profiles for the process when it forks. This is designed to replace the use of
+  writepid option for moving a process into a cgroup.
+
 `timeout_period <seconds>`
 > Provide a timeout after which point the service will be killed. The oneshot keyword is respected
   here, so oneshot services do not automatically restart, however all other services will.
@@ -358,6 +360,8 @@
   cgroup/cpuset usage. If no files under /dev/cpuset/ are specified, but the
   system property 'ro.cpuset.default' is set to a non-empty cpuset name (e.g.
   '/foreground'), then the pid is written to file /dev/cpuset/_cpuset\_name_/tasks.
+  The use of this option for moving a process into a cgroup is obsolete. Please
+  use task_profiles option instead.
 
 
 Triggers
@@ -489,6 +493,25 @@
   -f: force installation of the module even if the version of the running kernel
   and the version of the kernel for which the module was compiled do not match.
 
+`interface_start <name>` \
+`interface_restart <name>` \
+`interface_stop <name>`
+> Find the service that provides the interface _name_ if it exists and run the `start`, `restart`,
+or `stop` commands on it respectively.  _name_ may be either a fully qualified HIDL name, in which
+case it is specified as `<interface>/<instance>`, or an AIDL name, in which case it is specified as
+`aidl/<interface>` for example `android.hardware.secure_element@1.1::ISecureElement/eSE1` or
+`aidl/aidl_lazy_test_1`.
+
+> Note that these commands only act on interfaces specified by the `interface` service option, not
+on interfaces registered at runtime.
+
+> Example usage of these commands: \
+`interface_start android.hardware.secure_element@1.1::ISecureElement/eSE1`
+will start the HIDL Service that provides the `android.hardware.secure_element@1.1` and `eSI1`
+instance. \
+`interface_start aidl/aidl_lazy_test_1` will start the AIDL service that
+provides the `aidl_lazy_test_1` interface.
+
 `load_system_props`
 > (This action is deprecated and no-op.)
 
@@ -497,32 +520,52 @@
   This is included in the default init.rc.
 
 `loglevel <level>`
-> Sets the kernel log level to level. Properties are expanded within _level_.
+> Sets init's log level to the integer level, from 7 (all logging) to 0
+  (fatal logging only). The numeric values correspond to the kernel log
+  levels, but this command does not affect the kernel log level. Use the
+  `write` command to write to `/proc/sys/kernel/printk` to change that.
+  Properties are expanded within _level_.
 
 `mark_post_data`
 > Used to mark the point right after /data is mounted. Used to implement the
   `class_reset_post_data` and `class_start_post_data` commands.
 
-`mkdir <path> [mode] [owner] [group]`
+`mkdir <path> [<mode>] [<owner>] [<group>] [encryption=<action>] [key=<key>]`
 > Create a directory at _path_, optionally with the given mode, owner, and
   group. If not provided, the directory is created with permissions 755 and
   owned by the root user and root group. If provided, the mode, owner and group
   will be updated if the directory exists already.
 
-`mount_all <fstab> [ <path> ]\* [--<option>]`
-> Calls fs\_mgr\_mount\_all on the given fs\_mgr-format fstab and imports .rc files
-  at the specified paths (e.g., on the partitions just mounted) with optional
+ > _action_ can be one of:
+  * `None`: take no encryption action; directory will be encrypted if parent is.
+  * `Require`: encrypt directory, abort boot process if encryption fails
+  * `Attempt`: try to set an encryption policy, but continue if it fails
+  * `DeleteIfNecessary`: recursively delete directory if necessary to set
+  encryption policy.
+
+  > _key_ can be one of:
+  * `ref`: use the systemwide DE key
+  * `per_boot_ref`: use the key freshly generated on each boot.
+
+`mount_all [ <fstab> ] [--<option>]`
+> Calls fs\_mgr\_mount\_all on the given fs\_mgr-format fstab with optional
   options "early" and "late".
-  Refer to the section of "Init .rc Files" for detail.
+  With "--early" set, the init executable will skip mounting entries with
+  "latemount" flag and triggering fs encryption state event. With "--late" set,
+  init executable will only mount entries with "latemount" flag. By default,
+  no option is set, and mount\_all will process all entries in the given fstab.
+  If the fstab parameter is not specified, fstab.${ro.boot.fstab_suffix},
+  fstab.${ro.hardware} or fstab.${ro.hardware.platform} will be scanned for
+  under /odm/etc, /vendor/etc, or / at runtime, in that order.
 
 `mount <type> <device> <dir> [ <flag>\* ] [<options>]`
 > Attempt to mount the named device at the directory _dir_
   _flag_s include "ro", "rw", "remount", "noatime", ...
   _options_ include "barrier=1", "noauto\_da\_alloc", "discard", ... as
-  a comma separated string, eg: barrier=1,noauto\_da\_alloc
+  a comma separated string, e.g. barrier=1,noauto\_da\_alloc
 
 `parse_apex_configs`
-> Parses config file(s) from the mounted APEXes. Intented to be used only once
+> Parses config file(s) from the mounted APEXes. Intended to be used only once
   when apexd notifies the mount event by setting apexd.status to ready.
 
 `restart <service>`
@@ -568,6 +611,7 @@
   Note that this is _not_ synchronous, and even if it were, there is
   no guarantee that the operating system's scheduler will execute the
   service sufficiently to guarantee anything about the service's status.
+  See the `exec_start` command for a synchronous version of `start`.
 
 > This creates an important consequence that if the service offers
   functionality to other services, such as providing a
@@ -579,13 +623,16 @@
 `stop <service>`
 > Stop a service from running if it is currently running.
 
-`swapon_all <fstab>`
+`swapon_all [ <fstab> ]`
 > Calls fs\_mgr\_swapon\_all on the given fstab file.
+  If the fstab parameter is not specified, fstab.${ro.boot.fstab_suffix},
+  fstab.${ro.hardware} or fstab.${ro.hardware.platform} will be scanned for
+  under /odm/etc, /vendor/etc, or / at runtime, in that order.
 
 `symlink <target> <path>`
 > Create a symbolic link at _path_ with the value _target_
 
-`sysclktz <mins_west_of_gmt>`
+`sysclktz <minutes_west_of_gmt>`
 > Set the system clock base (0 if system clock ticks in GMT)
 
 `trigger <event>`
@@ -595,8 +642,11 @@
 `umount <path>`
 > Unmount the filesystem mounted at that path.
 
-`verity_load_state`
-> Internal implementation detail used to load dm-verity state.
+`umount_all [ <fstab> ]`
+> Calls fs\_mgr\_umount\_all on the given fstab file.
+  If the fstab parameter is not specified, fstab.${ro.boot.fstab_suffix},
+  fstab.${ro.hardware} or fstab.${ro.hardware.platform} will be scanned for
+  under /odm/etc, /vendor/etc, or / at runtime, in that order.
 
 `verity_update_state <mount-point>`
 > Internal implementation detail used to update dm-verity state and
@@ -606,7 +656,8 @@
 `wait <path> [ <timeout> ]`
 > Poll for the existence of the given file and return when found,
   or the timeout has been reached. If timeout is not specified it
-  currently defaults to five seconds.
+  currently defaults to five seconds. The timeout value can be
+  fractional seconds, specified in floating point notation.
 
 `wait_for_prop <name> <value>`
 > Wait for system property _name_ to be _value_. Properties are expanded
@@ -637,8 +688,9 @@
       `ro.boot.init_rc` during initial boot.
    2. When it imports /{system,vendor,odm}/etc/init/ for first stage mount
       devices immediately after importing /init.rc.
-   3. When it imports /{system,vendor,odm}/etc/init/ or .rc files at specified
-      paths during mount_all.
+   3. (Deprecated) When it imports /{system,vendor,odm}/etc/init/ or .rc files
+      at specified paths during mount_all, not allowed for devices launching
+      after Q.
 
 The order that files are imported is a bit complex for legacy reasons
 and to keep backwards compatibility.  It is not strictly guaranteed.
@@ -648,7 +700,7 @@
 earlier executed trigger, or 2) place it in an Action with the same
 trigger within the same file at an earlier line.
 
-Nonetheless, the defacto order for first stage mount devices is:
+Nonetheless, the de facto order for first stage mount devices is:
 1. /init.rc is parsed then recursively each of its imports are
    parsed.
 2. The contents of /system/etc/init/ are alphabetized and parsed
@@ -686,6 +738,38 @@
   `/sys/fs/ext4/${dev.mnt.blk.<mount_point>}/` to tune the block device
   characteristics in a device agnostic manner.
 
+Init responds to properties that begin with `ctl.`.  These properties take the format of
+`ctl.[<target>_]<command>` and the _value_ of the system property is used as a parameter.  The
+_target_ is optional and specifies the service option that _value_ is meant to match with.  There is
+only one option for _target_, `interface` which indicates that _value_ will refer to an interface
+that a service provides and not the service name itself.
+
+For example:
+
+`SetProperty("ctl.start", "logd")` will run the `start` command on `logd`.
+
+`SetProperty("ctl.interface_start", "aidl/aidl_lazy_test_1")` will run the `start` command on the
+service that exposes the `aidl aidl_lazy_test_1` interface.
+
+Note that these
+properties are only settable; they will have no value when read.
+
+The _commands_ are listed below.
+
+`start` \
+`restart` \
+`stop` \
+These are equivalent to using the `start`, `restart`, and `stop` commands on the service specified
+by the _value_ of the property.
+
+`oneshot_one` and `oneshot_off` will turn on or off the _oneshot_
+flag for the service specified by the _value_ of the property.  This is
+particularly intended for services that are conditionally lazy HALs.  When
+they are lazy HALs, oneshot must be on, otherwise oneshot should be off.
+
+`sigstop_on` and `sigstop_off` will turn on or off the _sigstop_ feature for the service
+specified by the _value_ of the property.  See the _Debugging init_ section below for more details
+about this feature.
 
 Boot timing
 -----------
@@ -695,8 +779,11 @@
 > Time after boot in ns (via the CLOCK\_BOOTTIME clock) at which the first
   stage of init started.
 
+`ro.boottime.init.first_stage`
+> How long in ns it took to run first stage.
+
 `ro.boottime.init.selinux`
-> How long it took the first stage to initialize SELinux.
+> How long in ns it took to run SELinux stage.
 
 `ro.boottime.init.cold_boot_wait`
 > How long init waited for ueventd's coldboot phase to end.
@@ -738,7 +825,7 @@
 A handy script named compare-bootcharts.py can be used to compare the
 start/end time of selected processes. The aforementioned grab-bootchart.sh
 will leave a bootchart tarball named bootchart.tgz at /tmp/android-bootchart.
-If two such barballs are preserved on the host machine under different
+If two such tarballs are preserved on the host machine under different
 directories, the script can list the timestamps differences. For example:
 
 Usage: system/core/init/compare-bootcharts.py _base-bootchart-dir_ _exp-bootchart-dir_
@@ -779,6 +866,12 @@
 
 Debugging init
 --------------
+When a service starts from init, it may fail to `execv()` the service. This is not typical, and may
+point to an error happening in the linker as the new service is started. The linker in Android
+prints its logs to `logd` and `stderr`, so they are visible in `logcat`. If the error is encountered
+before it is possible to access `logcat`, the `stdio_to_kmsg` service option may be used to direct
+the logs that the linker prints to `stderr` to `kmsg`, where they can be read via a serial port.
+
 Launching init services without init is not recommended as init sets up a significant amount of
 environment (user, groups, security label, capabilities, etc) that is hard to replicate manually.
 
@@ -786,7 +879,7 @@
 This option will send SIGSTOP to a service immediately before calling exec. This gives a window
 where developers can attach a debugger, strace, etc before continuing the service with SIGCONT.
 
-This flag can also be dynamically controled via the ctl.sigstop_on and ctl.sigstop_off properties.
+This flag can also be dynamically controlled via the ctl.sigstop_on and ctl.sigstop_off properties.
 
 Below is an example of dynamically debugging logd via the above:
 
diff --git a/init/README.ueventd.md b/init/README.ueventd.md
new file mode 100644
index 0000000..053ebf8
--- /dev/null
+++ b/init/README.ueventd.md
@@ -0,0 +1,138 @@
+# Ueventd
+-------
+Ueventd manages `/dev`, sets permissions for `/sys`, and handles firmware uevents. It has default
+behavior described below, along with a scripting language that allows customizing this behavior,
+built on the same parser as init.
+
+Ueventd has one generic customization parameter, the size of rcvbuf_size for the ueventd socket. It
+is customized by the `uevent_socket_rcvbuf_size` parameter, which takes the format of
+
+    uevent_socket_rcvbuf_size <size>
+For example
+
+    uevent_socket_rcvbuf_size 16M
+Sets the uevent socket rcvbuf_size to 16 megabytes.
+
+## /dev
+----
+Ueventd listens to the kernel uevent sockets and creates/deletes nodes in `/dev` based on the
+incoming add/remove uevents. It defaults to using `0600` mode and `root` user/group. It always
+creates the nodes with the SELabel from the current loaded SEPolicy. It has three default behaviors
+for the node path:
+
+  1. Block devices are created as `/dev/block/<basename uevent DEVPATH>`. There are symlinks created
+     to this node at `/dev/block/<type>/<parent device>/<basename uevent DEVPATH>`,
+     `/dev/block/<type>/<parent device>/by-name/<uevent PARTNAME>`, and `/dev/block/by-name/<uevent
+     PARTNAME>` if the device is a boot device.
+  2. USB devices are created as `/dev/<uevent DEVNAME>` if `DEVNAME` was specified for the uevent,
+     otherwise as `/dev/bus/usb/<bus_id>/<device_id>` where `bus_id` is `uevent MINOR / 128 + 1` and
+     `device_id` is `uevent MINOR % 128 + 1`.
+  3. All other devices are created as `/dev/<basename uevent DEVPATH>`
+
+The permissions can be modified using a ueventd.rc script and a line that beings with `/dev`. These
+lines take the format of
+
+    devname mode uid gid
+For example
+
+    /dev/null 0666 root root
+When `/dev/null` is created, its mode will be set to `0666`, its user to `root` and its group to
+`root`.
+
+The path can be modified using a ueventd.rc script and a `subsystem` section. There are three to set
+for a subsystem: the subsystem name, which device name to use, and which directory to place the
+device in. The section takes the below format of
+
+    subsystem <subsystem_name>
+      devname uevent_devname|uevent_devpath
+      [dirname <directory>]
+
+`subsystem_name` is used to match uevent `SUBSYSTEM` value
+
+`devname` takes one of two options
+  1. `uevent_devname` specifies that the name of the node will be the uevent `DEVNAME`
+  2. `uevent_devpath` specified that the name of the node will be basename uevent `DEVPATH`
+
+`dirname` is an optional parameter that specifies a directory within `/dev` where the node will be
+created.
+
+For example
+
+    subsystem sound
+      devname uevent_devpath
+      dirname /dev/snd
+Indicates that all uevents with `SUBSYSTEM=sound` will create nodes as `/dev/snd/<basename uevent
+DEVPATH>`.
+
+## /sys
+----
+Ueventd by default takes no action for `/sys`, however it can be instructed to set permissions for
+certain files in `/sys` when matching uevents are generated. This is done using a ueventd.rc script
+and a line that begins with `/sys`. These lines take the format of
+
+    nodename attr mode uid gid
+For example
+
+    /sys/devices/system/cpu/cpu* cpufreq/scaling_max_freq 0664 system system
+When a uevent that matches the pattern `/sys/devices/system/cpu/cpu*` is sent, the matching sysfs
+attribute, `cpufreq/scaling_max_freq`, will have its mode set to `0664`, its user to to `system` and
+its group set to `system`.
+
+Note that `*` matches as a wildcard and can be used anywhere in a path.
+
+## Firmware loading
+----------------
+Ueventd by default serves firmware requests by searching through a list of firmware directories
+for a file matching the uevent `FIRMWARE`. It then forks a process to serve this firmware to the
+kernel.
+
+The list of firmware directories is customized by a `firmware_directories` line in a ueventd.rc
+file. This line takes the format of
+
+    firmware_directories <firmware_directory> [ <firmware_directory> ]*
+For example
+
+    firmware_directories /etc/firmware/ /odm/firmware/ /vendor/firmware/ /firmware/image/
+Adds those 4 directories, in that order to the list of firmware directories that will be tried by
+ueventd. Note that this option always accumulates to the list; it is not possible to remove previous
+entries.
+
+Ueventd will wait until after `post-fs` in init, to keep retrying before believing the firmwares are
+not present.
+
+The exact firmware file to be served can be customized by running an external program by a
+`external_firmware_handler` line in a ueventd.rc file. This line takes the format of
+
+    external_firmware_handler <devpath> <user name to run as> <path to external program>
+For example
+
+    external_firmware_handler /devices/leds/red/firmware/coeffs.bin system /vendor/bin/led_coeffs.bin
+Will launch `/vendor/bin/led_coeffs.bin` as the system user instead of serving the default firmware
+for `/devices/leds/red/firmware/coeffs.bin`.
+
+Ueventd will provide the uevent `DEVPATH` and `FIRMWARE` to this external program on the environment
+via environment variables with the same names. Ueventd will use the string written to stdout as the
+new name of the firmware to load. It will still look for the new firmware in the list of firmware
+directories stated above. It will also reject file names with `..` in them, to prevent leaving these
+directories. If stdout cannot be read, or the program returns with any exit code other than
+`EXIT_SUCCESS`, or the program crashes, the default firmware from the uevent will be loaded.
+
+Ueventd will additionally log all messages sent to stderr from the external program to the serial
+console after the external program has exited.
+
+## Coldboot
+--------
+Ueventd must create devices in `/dev` for all devices that have already sent their uevents before
+ueventd has started. To do so, when ueventd is started it does what it calls a 'coldboot' on `/sys`,
+in which it writes 'add' to every 'uevent' file that it finds in `/sys/class`, `/sys/block`, and
+`/sys/devices`. This causes the kernel to regenerate the uevents for these paths, and thus for
+ueventd to create the nodes.
+
+For boot time purposes, this is done in parallel across a set of child processes. `ueventd.cpp` in
+this directory contains documentation on how the parallelization is done.
+
+There is an option to parallelize the restorecon function during cold boot as well. This should only
+be done for devices that do not use genfscon, which is the recommended method for labeling sysfs
+nodes. To enable this option, use the below line in a ueventd.rc script:
+
+    parallel_restorecon enabled
diff --git a/init/action.cpp b/init/action.cpp
index 94ccef2..1e998ae 100644
--- a/init/action.cpp
+++ b/init/action.cpp
@@ -28,17 +28,18 @@
 namespace android {
 namespace init {
 
-Result<Success> RunBuiltinFunction(const BuiltinFunction& function,
-                                   const std::vector<std::string>& args,
-                                   const std::string& context) {
+Result<void> RunBuiltinFunction(const BuiltinFunction& function,
+                                const std::vector<std::string>& args, const std::string& context) {
     auto builtin_arguments = BuiltinArguments(context);
 
     builtin_arguments.args.resize(args.size());
     builtin_arguments.args[0] = args[0];
     for (std::size_t i = 1; i < args.size(); ++i) {
-        if (!expand_props(args[i], &builtin_arguments.args[i])) {
-            return Error() << "cannot expand '" << args[i] << "'";
+        auto expanded_arg = ExpandProps(args[i]);
+        if (!expanded_arg.ok()) {
+            return expanded_arg.error();
         }
+        builtin_arguments.args[i] = std::move(*expanded_arg);
     }
 
     return function(builtin_arguments);
@@ -51,14 +52,14 @@
       args_(std::move(args)),
       line_(line) {}
 
-Result<Success> Command::InvokeFunc(Subcontext* subcontext) const {
+Result<void> Command::InvokeFunc(Subcontext* subcontext) const {
     if (subcontext) {
         if (execute_in_subcontext_) {
             return subcontext->Execute(args_);
         }
 
         auto expanded_args = subcontext->ExpandArgs(args_);
-        if (!expanded_args) {
+        if (!expanded_args.ok()) {
             return expanded_args.error();
         }
         return RunBuiltinFunction(func_, *expanded_args, subcontext->context());
@@ -67,6 +68,30 @@
     return RunBuiltinFunction(func_, args_, kInitContext);
 }
 
+Result<void> Command::CheckCommand() const {
+    auto builtin_arguments = BuiltinArguments("host_init_verifier");
+
+    builtin_arguments.args.resize(args_.size());
+    builtin_arguments.args[0] = args_[0];
+    for (size_t i = 1; i < args_.size(); ++i) {
+        auto expanded_arg = ExpandProps(args_[i]);
+        if (!expanded_arg.ok()) {
+            if (expanded_arg.error().message().find("doesn't exist while expanding") !=
+                std::string::npos) {
+                // If we failed because we won't have a property, use an empty string, which is
+                // never returned from the parser, to indicate that this field cannot be checked.
+                builtin_arguments.args[i] = "";
+            } else {
+                return expanded_arg.error();
+            }
+        } else {
+            builtin_arguments.args[i] = std::move(*expanded_arg);
+        }
+    }
+
+    return func_(builtin_arguments);
+}
+
 std::string Command::BuildCommandString() const {
     return Join(args_, ' ');
 }
@@ -81,28 +106,43 @@
       filename_(filename),
       line_(line) {}
 
-const KeywordFunctionMap* Action::function_map_ = nullptr;
+const BuiltinFunctionMap* Action::function_map_ = nullptr;
 
-Result<Success> Action::AddCommand(std::vector<std::string>&& args, int line) {
+Result<void> Action::AddCommand(std::vector<std::string>&& args, int line) {
     if (!function_map_) {
         return Error() << "no function map available";
     }
 
-    auto function = function_map_->FindFunction(args);
-    if (!function) return Error() << function.error();
+    auto map_result = function_map_->Find(args);
+    if (!map_result.ok()) {
+        return Error() << map_result.error();
+    }
 
-    commands_.emplace_back(function->second, function->first, std::move(args), line);
-    return Success();
+    commands_.emplace_back(map_result->function, map_result->run_in_subcontext, std::move(args),
+                           line);
+    return {};
 }
 
 void Action::AddCommand(BuiltinFunction f, std::vector<std::string>&& args, int line) {
-    commands_.emplace_back(f, false, std::move(args), line);
+    commands_.emplace_back(std::move(f), false, std::move(args), line);
 }
 
 std::size_t Action::NumCommands() const {
     return commands_.size();
 }
 
+size_t Action::CheckAllCommands() const {
+    size_t failures = 0;
+    for (const auto& command : commands_) {
+        if (auto result = command.CheckCommand(); !result.ok()) {
+            LOG(ERROR) << "Command '" << command.BuildCommandString() << "' (" << filename_ << ":"
+                       << command.line() << ") failed: " << result.error();
+            ++failures;
+        }
+    }
+    return failures;
+}
+
 void Action::ExecuteOneCommand(std::size_t command) const {
     // We need a copy here since some Command execution may result in
     // changing commands_ vector by importing .rc files through parser
@@ -121,25 +161,15 @@
     auto result = command.InvokeFunc(subcontext_);
     auto duration = t.duration();
 
-    // There are many legacy paths in rootdir/init.rc that will virtually never exist on a new
-    // device, such as '/sys/class/leds/jogball-backlight/brightness'.  As of this writing, there
-    // are 198 such failures on bullhead.  Instead of spamming the log reporting them, we do not
-    // report such failures unless we're running at the DEBUG log level.
-    bool report_failure = !result.has_value();
-    if (report_failure && android::base::GetMinimumLogSeverity() > android::base::DEBUG &&
-        result.error_errno() == ENOENT) {
-        report_failure = false;
-    }
-
     // Any action longer than 50ms will be warned to user as slow operation
-    if (report_failure || duration > 50ms ||
+    if (!result.has_value() || duration > 50ms ||
         android::base::GetMinimumLogSeverity() <= android::base::DEBUG) {
         std::string trigger_name = BuildTriggersString();
         std::string cmd_str = command.BuildCommandString();
 
         LOG(INFO) << "Command '" << cmd_str << "' action=" << trigger_name << " (" << filename_
                   << ":" << command.line() << ") took " << duration.count() << "ms and "
-                  << (result ? "succeeded" : "failed: " + result.error_string());
+                  << (result.ok() ? "succeeded" : "failed: " + result.error().message());
     }
 }
 
@@ -150,28 +180,32 @@
 // It takes an optional (name, value) pair, which if provided must
 // be present in property_triggers_; it skips the check of the current
 // property value for this pair.
-bool Action::CheckPropertyTriggers(const std::string& name,
-                                   const std::string& value) const {
+bool Action::CheckPropertyTriggers(const std::string& name, const std::string& value) const {
     if (property_triggers_.empty()) {
         return true;
     }
 
-    bool found = name.empty();
-    for (const auto& [trigger_name, trigger_value] : property_triggers_) {
-        if (trigger_name == name) {
-            if (trigger_value != "*" && trigger_value != value) {
-                return false;
-            } else {
-                found = true;
-            }
-        } else {
-            std::string prop_val = android::base::GetProperty(trigger_name, "");
-            if (prop_val.empty() || (trigger_value != "*" && trigger_value != prop_val)) {
-                return false;
-            }
+    if (!name.empty()) {
+        auto it = property_triggers_.find(name);
+        if (it == property_triggers_.end()) {
+            return false;
+        }
+        const auto& trigger_value = it->second;
+        if (trigger_value != "*" && trigger_value != value) {
+            return false;
         }
     }
-    return found;
+
+    for (const auto& [trigger_name, trigger_value] : property_triggers_) {
+        if (trigger_name != name) {
+            std::string prop_value = android::base::GetProperty(trigger_name, "");
+            if (trigger_value == "*" && !prop_value.empty()) {
+                continue;
+            }
+            if (trigger_value != prop_value) return false;
+        }
+    }
+    return true;
 }
 
 bool Action::CheckEvent(const EventTrigger& event_trigger) const {
diff --git a/init/action.h b/init/action.h
index 967c682..1534bf9 100644
--- a/init/action.h
+++ b/init/action.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_ACTION_H
-#define _INIT_ACTION_H
+#pragma once
 
 #include <map>
 #include <queue>
@@ -31,16 +30,17 @@
 namespace android {
 namespace init {
 
-Result<Success> RunBuiltinFunction(const BuiltinFunction& function,
-                                   const std::vector<std::string>& args, const std::string& context);
+Result<void> RunBuiltinFunction(const BuiltinFunction& function,
+                                const std::vector<std::string>& args, const std::string& context);
 
 class Command {
   public:
     Command(BuiltinFunction f, bool execute_in_subcontext, std::vector<std::string>&& args,
             int line);
 
-    Result<Success> InvokeFunc(Subcontext* subcontext) const;
+    Result<void> InvokeFunc(Subcontext* subcontext) const;
     std::string BuildCommandString() const;
+    Result<void> CheckCommand() const;
 
     int line() const { return line_; }
 
@@ -61,9 +61,9 @@
            const std::string& event_trigger,
            const std::map<std::string, std::string>& property_triggers);
 
-    Result<Success> AddCommand(std::vector<std::string>&& args, int line);
+    Result<void> AddCommand(std::vector<std::string>&& args, int line);
     void AddCommand(BuiltinFunction f, std::vector<std::string>&& args, int line);
-    std::size_t NumCommands() const;
+    size_t NumCommands() const;
     void ExecuteOneCommand(std::size_t command) const;
     void ExecuteAllCommands() const;
     bool CheckEvent(const EventTrigger& event_trigger) const;
@@ -71,11 +71,12 @@
     bool CheckEvent(const BuiltinAction& builtin_action) const;
     std::string BuildTriggersString() const;
     void DumpState() const;
+    size_t CheckAllCommands() const;
 
     bool oneshot() const { return oneshot_; }
     const std::string& filename() const { return filename_; }
     int line() const { return line_; }
-    static void set_function_map(const KeywordFunctionMap* function_map) {
+    static void set_function_map(const BuiltinFunctionMap* function_map) {
         function_map_ = function_map;
     }
 
@@ -91,10 +92,8 @@
     Subcontext* subcontext_;
     std::string filename_;
     int line_;
-    static const KeywordFunctionMap* function_map_;
+    static const BuiltinFunctionMap* function_map_;
 };
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/action_manager.cpp b/init/action_manager.cpp
index 9de4085..b45f5cd 100644
--- a/init/action_manager.cpp
+++ b/init/action_manager.cpp
@@ -23,6 +23,14 @@
 
 ActionManager::ActionManager() : current_command_(0) {}
 
+size_t ActionManager::CheckAllCommands() {
+    size_t failures = 0;
+    for (const auto& action : actions_) {
+        failures += action->CheckAllCommands();
+    }
+    return failures;
+}
+
 ActionManager& ActionManager::GetInstance() {
     static ActionManager instance;
     return instance;
@@ -33,10 +41,12 @@
 }
 
 void ActionManager::QueueEventTrigger(const std::string& trigger) {
+    auto lock = std::lock_guard{event_queue_lock_};
     event_queue_.emplace(trigger);
 }
 
 void ActionManager::QueuePropertyChange(const std::string& name, const std::string& value) {
+    auto lock = std::lock_guard{event_queue_lock_};
     event_queue_.emplace(std::make_pair(name, value));
 }
 
@@ -45,24 +55,28 @@
 }
 
 void ActionManager::QueueBuiltinAction(BuiltinFunction func, const std::string& name) {
+    auto lock = std::lock_guard{event_queue_lock_};
     auto action = std::make_unique<Action>(true, nullptr, "<Builtin Action>", 0, name,
                                            std::map<std::string, std::string>{});
-    action->AddCommand(func, {name}, 0);
+    action->AddCommand(std::move(func), {name}, 0);
 
     event_queue_.emplace(action.get());
     actions_.emplace_back(std::move(action));
 }
 
 void ActionManager::ExecuteOneCommand() {
-    // Loop through the event queue until we have an action to execute
-    while (current_executing_actions_.empty() && !event_queue_.empty()) {
-        for (const auto& action : actions_) {
-            if (std::visit([&action](const auto& event) { return action->CheckEvent(event); },
-                           event_queue_.front())) {
-                current_executing_actions_.emplace(action.get());
+    {
+        auto lock = std::lock_guard{event_queue_lock_};
+        // Loop through the event queue until we have an action to execute
+        while (current_executing_actions_.empty() && !event_queue_.empty()) {
+            for (const auto& action : actions_) {
+                if (std::visit([&action](const auto& event) { return action->CheckEvent(event); },
+                               event_queue_.front())) {
+                    current_executing_actions_.emplace(action.get());
+                }
             }
+            event_queue_.pop();
         }
-        event_queue_.pop();
     }
 
     if (current_executing_actions_.empty()) {
@@ -88,12 +102,14 @@
         current_command_ = 0;
         if (action->oneshot()) {
             auto eraser = [&action](std::unique_ptr<Action>& a) { return a.get() == action; };
-            actions_.erase(std::remove_if(actions_.begin(), actions_.end(), eraser));
+            actions_.erase(std::remove_if(actions_.begin(), actions_.end(), eraser),
+                           actions_.end());
         }
     }
 }
 
 bool ActionManager::HasMoreCommands() const {
+    auto lock = std::lock_guard{event_queue_lock_};
     return !current_executing_actions_.empty() || !event_queue_.empty();
 }
 
@@ -104,6 +120,7 @@
 }
 
 void ActionManager::ClearQueue() {
+    auto lock = std::lock_guard{event_queue_lock_};
     // We are shutting down so don't claim the oneshot builtin actions back
     current_executing_actions_ = {};
     event_queue_ = {};
diff --git a/init/action_manager.h b/init/action_manager.h
index 5f47a6d..b6f93d9 100644
--- a/init/action_manager.h
+++ b/init/action_manager.h
@@ -14,12 +14,14 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_ACTION_MANAGER_H
-#define _INIT_ACTION_MANAGER_H
+#pragma once
 
+#include <mutex>
 #include <string>
 #include <vector>
 
+#include <android-base/thread_annotations.h>
+
 #include "action.h"
 #include "builtins.h"
 
@@ -32,6 +34,7 @@
 
     // Exposed for testing
     ActionManager();
+    size_t CheckAllCommands();
 
     void AddAction(std::unique_ptr<Action> action);
     void QueueEventTrigger(const std::string& trigger);
@@ -48,12 +51,12 @@
     void operator=(ActionManager const&) = delete;
 
     std::vector<std::unique_ptr<Action>> actions_;
-    std::queue<std::variant<EventTrigger, PropertyChange, BuiltinAction>> event_queue_;
+    std::queue<std::variant<EventTrigger, PropertyChange, BuiltinAction>> event_queue_
+            GUARDED_BY(event_queue_lock_);
+    mutable std::mutex event_queue_lock_;
     std::queue<const Action*> current_executing_actions_;
     std::size_t current_command_;
 };
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/action_parser.cpp b/init/action_parser.cpp
index 4f8bd16..52f6a1f 100644
--- a/init/action_parser.cpp
+++ b/init/action_parser.cpp
@@ -16,11 +16,14 @@
 
 #include "action_parser.h"
 
+#include <ctype.h>
+
 #include <android-base/properties.h>
 #include <android-base/strings.h>
 
-#if defined(__ANDROID__)
+#ifdef INIT_FULL_SOURCES
 #include "property_service.h"
+#include "selinux.h"
 #else
 #include "host_init_stubs.h"
 #endif
@@ -55,8 +58,8 @@
     return CanReadProperty(subcontext->context(), prop_name);
 }
 
-Result<Success> ParsePropertyTrigger(const std::string& trigger, Subcontext* subcontext,
-                                     std::map<std::string, std::string>* property_triggers) {
+Result<void> ParsePropertyTrigger(const std::string& trigger, Subcontext* subcontext,
+                                  std::map<std::string, std::string>* property_triggers) {
     const static std::string prop_str("property:");
     std::string prop_name(trigger.substr(prop_str.length()));
     size_t equal_pos = prop_name.find('=');
@@ -74,12 +77,23 @@
     if (auto [it, inserted] = property_triggers->emplace(prop_name, prop_value); !inserted) {
         return Error() << "multiple property triggers found for same property";
     }
-    return Success();
+    return {};
 }
 
-Result<Success> ParseTriggers(const std::vector<std::string>& args, Subcontext* subcontext,
-                              std::string* event_trigger,
-                              std::map<std::string, std::string>* property_triggers) {
+Result<void> ValidateEventTrigger(const std::string& event_trigger) {
+    if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_R__) {
+        for (const char& c : event_trigger) {
+            if (c != '_' && c != '-' && !std::isalnum(c)) {
+                return Error() << "Illegal character '" << c << "' in '" << event_trigger << "'";
+            }
+        }
+    }
+    return {};
+}
+
+Result<void> ParseTriggers(const std::vector<std::string>& args, Subcontext* subcontext,
+                           std::string* event_trigger,
+                           std::map<std::string, std::string>* property_triggers) {
     const static std::string prop_str("property:");
     for (std::size_t i = 0; i < args.size(); ++i) {
         if (args[i].empty()) {
@@ -96,45 +110,44 @@
 
         if (!args[i].compare(0, prop_str.length(), prop_str)) {
             if (auto result = ParsePropertyTrigger(args[i], subcontext, property_triggers);
-                !result) {
+                !result.ok()) {
                 return result;
             }
         } else {
             if (!event_trigger->empty()) {
                 return Error() << "multiple event triggers are not allowed";
             }
+            if (auto result = ValidateEventTrigger(args[i]); !result.ok()) {
+                return result;
+            }
 
             *event_trigger = args[i];
         }
     }
 
-    return Success();
+    return {};
 }
 
 }  // namespace
 
-Result<Success> ActionParser::ParseSection(std::vector<std::string>&& args,
-                                           const std::string& filename, int line) {
+Result<void> ActionParser::ParseSection(std::vector<std::string>&& args,
+                                        const std::string& filename, int line) {
     std::vector<std::string> triggers(args.begin() + 1, args.end());
     if (triggers.size() < 1) {
         return Error() << "Actions must have a trigger";
     }
 
     Subcontext* action_subcontext = nullptr;
-    if (subcontexts_) {
-        for (auto& subcontext : *subcontexts_) {
-            if (StartsWith(filename, subcontext.path_prefix())) {
-                action_subcontext = &subcontext;
-                break;
-            }
-        }
+    if (subcontext_ && subcontext_->PathMatchesSubcontext(filename)) {
+        action_subcontext = subcontext_;
     }
 
     std::string event_trigger;
     std::map<std::string, std::string> property_triggers;
 
-    if (auto result = ParseTriggers(triggers, action_subcontext, &event_trigger, &property_triggers);
-        !result) {
+    if (auto result =
+                ParseTriggers(triggers, action_subcontext, &event_trigger, &property_triggers);
+        !result.ok()) {
         return Error() << "ParseTriggers() failed: " << result.error();
     }
 
@@ -142,19 +155,19 @@
                                            property_triggers);
 
     action_ = std::move(action);
-    return Success();
+    return {};
 }
 
-Result<Success> ActionParser::ParseLineSection(std::vector<std::string>&& args, int line) {
-    return action_ ? action_->AddCommand(std::move(args), line) : Success();
+Result<void> ActionParser::ParseLineSection(std::vector<std::string>&& args, int line) {
+    return action_ ? action_->AddCommand(std::move(args), line) : Result<void>{};
 }
 
-Result<Success> ActionParser::EndSection() {
+Result<void> ActionParser::EndSection() {
     if (action_ && action_->NumCommands() > 0) {
         action_manager_->AddAction(std::move(action_));
     }
 
-    return Success();
+    return {};
 }
 
 }  // namespace init
diff --git a/init/action_parser.h b/init/action_parser.h
index b7f7074..3000132 100644
--- a/init/action_parser.h
+++ b/init/action_parser.h
@@ -30,16 +30,16 @@
 
 class ActionParser : public SectionParser {
   public:
-    ActionParser(ActionManager* action_manager, std::vector<Subcontext>* subcontexts)
-        : action_manager_(action_manager), subcontexts_(subcontexts), action_(nullptr) {}
-    Result<Success> ParseSection(std::vector<std::string>&& args, const std::string& filename,
-                                 int line) override;
-    Result<Success> ParseLineSection(std::vector<std::string>&& args, int line) override;
-    Result<Success> EndSection() override;
+    ActionParser(ActionManager* action_manager, Subcontext* subcontext)
+        : action_manager_(action_manager), subcontext_(subcontext), action_(nullptr) {}
+    Result<void> ParseSection(std::vector<std::string>&& args, const std::string& filename,
+                              int line) override;
+    Result<void> ParseLineSection(std::vector<std::string>&& args, int line) override;
+    Result<void> EndSection() override;
 
   private:
     ActionManager* action_manager_;
-    std::vector<Subcontext>* subcontexts_;
+    Subcontext* subcontext_;
     std::unique_ptr<Action> action_;
 };
 
diff --git a/init/block_dev_initializer.cpp b/init/block_dev_initializer.cpp
new file mode 100644
index 0000000..b423f86
--- /dev/null
+++ b/init/block_dev_initializer.cpp
@@ -0,0 +1,148 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <chrono>
+#include <string_view>
+#include <vector>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <fs_mgr.h>
+
+#include "block_dev_initializer.h"
+
+namespace android {
+namespace init {
+
+using android::base::Timer;
+using namespace std::chrono_literals;
+
+BlockDevInitializer::BlockDevInitializer() : uevent_listener_(16 * 1024 * 1024) {
+    auto boot_devices = android::fs_mgr::GetBootDevices();
+    device_handler_ = std::make_unique<DeviceHandler>(
+            std::vector<Permissions>{}, std::vector<SysfsPermissions>{}, std::vector<Subsystem>{},
+            std::move(boot_devices), false);
+}
+
+bool BlockDevInitializer::InitDeviceMapper() {
+    const std::string dm_path = "/devices/virtual/misc/device-mapper";
+    bool found = false;
+    auto dm_callback = [this, &dm_path, &found](const Uevent& uevent) {
+        if (uevent.path == dm_path) {
+            device_handler_->HandleUevent(uevent);
+            found = true;
+            return ListenerAction::kStop;
+        }
+        return ListenerAction::kContinue;
+    };
+    uevent_listener_.RegenerateUeventsForPath("/sys" + dm_path, dm_callback);
+    if (!found) {
+        LOG(INFO) << "device-mapper device not found in /sys, waiting for its uevent";
+        Timer t;
+        uevent_listener_.Poll(dm_callback, 10s);
+        LOG(INFO) << "Wait for device-mapper returned after " << t;
+    }
+    if (!found) {
+        LOG(ERROR) << "device-mapper device not found after polling timeout";
+        return false;
+    }
+    return true;
+}
+
+ListenerAction BlockDevInitializer::HandleUevent(const Uevent& uevent,
+                                                 std::set<std::string>* devices) {
+    // Ignore everything that is not a block device.
+    if (uevent.subsystem != "block") {
+        return ListenerAction::kContinue;
+    }
+
+    auto name = uevent.partition_name;
+    if (name.empty()) {
+        size_t base_idx = uevent.path.rfind('/');
+        if (base_idx == std::string::npos) {
+            return ListenerAction::kContinue;
+        }
+        name = uevent.path.substr(base_idx + 1);
+    }
+
+    auto iter = devices->find(name);
+    if (iter == devices->end()) {
+        return ListenerAction::kContinue;
+    }
+
+    LOG(VERBOSE) << __PRETTY_FUNCTION__ << ": found partition: " << name;
+
+    devices->erase(iter);
+    device_handler_->HandleUevent(uevent);
+    return devices->empty() ? ListenerAction::kStop : ListenerAction::kContinue;
+}
+
+bool BlockDevInitializer::InitDevices(std::set<std::string> devices) {
+    auto uevent_callback = [&, this](const Uevent& uevent) -> ListenerAction {
+        return HandleUevent(uevent, &devices);
+    };
+    uevent_listener_.RegenerateUevents(uevent_callback);
+
+    // UeventCallback() will remove found partitions from |devices|. So if it
+    // isn't empty here, it means some partitions are not found.
+    if (!devices.empty()) {
+        LOG(INFO) << __PRETTY_FUNCTION__
+                  << ": partition(s) not found in /sys, waiting for their uevent(s): "
+                  << android::base::Join(devices, ", ");
+        Timer t;
+        uevent_listener_.Poll(uevent_callback, 10s);
+        LOG(INFO) << "Wait for partitions returned after " << t;
+    }
+
+    if (!devices.empty()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__ << ": partition(s) not found after polling timeout: "
+                   << android::base::Join(devices, ", ");
+        return false;
+    }
+    return true;
+}
+
+// Creates "/dev/block/dm-XX" for dm nodes by running coldboot on /sys/block/dm-XX.
+bool BlockDevInitializer::InitDmDevice(const std::string& device) {
+    const std::string device_name(basename(device.c_str()));
+    const std::string syspath = "/sys/block/" + device_name;
+    bool found = false;
+
+    auto uevent_callback = [&device_name, &device, this, &found](const Uevent& uevent) {
+        if (uevent.device_name == device_name) {
+            LOG(VERBOSE) << "Creating device-mapper device : " << device;
+            device_handler_->HandleUevent(uevent);
+            found = true;
+            return ListenerAction::kStop;
+        }
+        return ListenerAction::kContinue;
+    };
+
+    uevent_listener_.RegenerateUeventsForPath(syspath, uevent_callback);
+    if (!found) {
+        LOG(INFO) << "dm device '" << device << "' not found in /sys, waiting for its uevent";
+        Timer t;
+        uevent_listener_.Poll(uevent_callback, 10s);
+        LOG(INFO) << "wait for dm device '" << device << "' returned after " << t;
+    }
+    if (!found) {
+        LOG(ERROR) << "dm device '" << device << "' not found after polling timeout";
+        return false;
+    }
+    return true;
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/block_dev_initializer.h b/init/block_dev_initializer.h
new file mode 100644
index 0000000..0d4c6e9
--- /dev/null
+++ b/init/block_dev_initializer.h
@@ -0,0 +1,41 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <memory>
+#include <set>
+#include <string>
+
+#include "devices.h"
+#include "uevent_listener.h"
+
+namespace android {
+namespace init {
+
+class BlockDevInitializer final {
+  public:
+    BlockDevInitializer();
+
+    bool InitDeviceMapper();
+    bool InitDevices(std::set<std::string> devices);
+    bool InitDmDevice(const std::string& device);
+
+  private:
+    ListenerAction HandleUevent(const Uevent& uevent, std::set<std::string>* devices);
+
+    std::unique_ptr<DeviceHandler> device_handler_;
+    UeventListener uevent_listener_;
+};
+
+}  // namespace init
+}  // namespace android
diff --git a/init/bootchart.cpp b/init/bootchart.cpp
index c2cf573..b7db9b6 100644
--- a/init/bootchart.cpp
+++ b/init/bootchart.cpp
@@ -165,20 +165,20 @@
   LOG(INFO) << "Bootcharting finished";
 }
 
-static Result<Success> do_bootchart_start() {
+static Result<void> do_bootchart_start() {
     // We don't care about the content, but we do care that /data/bootchart/enabled actually exists.
     std::string start;
     if (!android::base::ReadFileToString("/data/bootchart/enabled", &start)) {
         LOG(VERBOSE) << "Not bootcharting";
-        return Success();
+        return {};
     }
 
     g_bootcharting_thread = new std::thread(bootchart_thread_main);
-    return Success();
+    return {};
 }
 
-static Result<Success> do_bootchart_stop() {
-    if (!g_bootcharting_thread) return Success();
+static Result<void> do_bootchart_stop() {
+    if (!g_bootcharting_thread) return {};
 
     // Tell the worker thread it's time to quit.
     {
@@ -190,10 +190,10 @@
     g_bootcharting_thread->join();
     delete g_bootcharting_thread;
     g_bootcharting_thread = nullptr;
-    return Success();
+    return {};
 }
 
-Result<Success> do_bootchart(const BuiltinArguments& args) {
+Result<void> do_bootchart(const BuiltinArguments& args) {
     if (args[1] == "start") return do_bootchart_start();
     return do_bootchart_stop();
 }
diff --git a/init/bootchart.h b/init/bootchart.h
index 05474ca..6f19aad 100644
--- a/init/bootchart.h
+++ b/init/bootchart.h
@@ -26,7 +26,7 @@
 namespace android {
 namespace init {
 
-Result<Success> do_bootchart(const BuiltinArguments& args);
+Result<void> do_bootchart(const BuiltinArguments& args);
 
 }  // namespace init
 }  // namespace android
diff --git a/init/boringssl_self_test.cpp b/init/boringssl_self_test.cpp
deleted file mode 100644
index 0408d30..0000000
--- a/init/boringssl_self_test.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "boringssl_self_test.h"
-
-#include <android-base/logging.h>
-#include <cutils/android_reboot.h>
-#include <openssl/crypto.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-namespace android {
-namespace init {
-
-Result<Success> StartBoringSslSelfTest(const BuiltinArguments&) {
-    pid_t id = fork();
-
-    if (id == 0) {
-        if (BORINGSSL_self_test() != 1) {
-            LOG(INFO) << "BoringSSL crypto self tests failed";
-
-            // This check has failed, so the device should refuse
-            // to boot. Rebooting to bootloader to wait for
-            // further action from the user.
-
-            int result = android_reboot(ANDROID_RB_RESTART2, 0,
-                                        "bootloader,boringssl-self-check-failed");
-            if (result != 0) {
-                LOG(ERROR) << "Failed to reboot into bootloader";
-            }
-        }
-
-        _exit(0);
-    } else if (id == -1) {
-        // Failed to fork, so cannot run the test. Refuse to continue.
-        PLOG(FATAL) << "Failed to fork for BoringSSL self test";
-    }
-
-    return Success();
-}
-
-}  // namespace init
-}  // namespace android
diff --git a/init/boringssl_self_test.h b/init/boringssl_self_test.h
deleted file mode 100644
index b21fc78..0000000
--- a/init/boringssl_self_test.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "builtin_arguments.h"
-#include "result.h"
-
-namespace android {
-namespace init {
-
-Result<Success> StartBoringSslSelfTest(const BuiltinArguments&);
-
-}  // namespace init
-}  // namespace android
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 25f324c..0ac66f2 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -16,6 +16,7 @@
 
 #include "builtins.h"
 
+#include <android/api-level.h>
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -41,9 +42,14 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+#include <memory>
+
+#include <ApexProperties.sysprop.h>
+#include <InitProperties.sysprop.h>
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <android-base/parsedouble.h>
 #include <android-base/parseint.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
@@ -53,8 +59,9 @@
 #include <cutils/android_reboot.h>
 #include <fs_mgr.h>
 #include <fscrypt/fscrypt.h>
-#include <fscrypt/fscrypt_init_extensions.h>
 #include <libgsi/libgsi.h>
+#include <logwrap/logwrap.h>
+#include <private/android_filesystem_config.h>
 #include <selinux/android.h>
 #include <selinux/label.h>
 #include <selinux/selinux.h>
@@ -62,20 +69,27 @@
 
 #include "action_manager.h"
 #include "bootchart.h"
+#include "builtin_arguments.h"
+#include "fscrypt_init_extensions.h"
 #include "init.h"
 #include "mount_namespace.h"
 #include "parser.h"
 #include "property_service.h"
 #include "reboot.h"
 #include "rlimit_parser.h"
+#include "selabel.h"
 #include "selinux.h"
 #include "service.h"
+#include "service_list.h"
 #include "subcontext.h"
 #include "util.h"
 
 using namespace std::literals::string_literals;
 
 using android::base::Basename;
+using android::base::SetProperty;
+using android::base::StartsWith;
+using android::base::StringPrintf;
 using android::base::unique_fd;
 using android::fs_mgr::Fstab;
 using android::fs_mgr::ReadFstabFromFile;
@@ -85,16 +99,55 @@
 namespace android {
 namespace init {
 
+// There are many legacy paths in rootdir/init.rc that will virtually never exist on a new
+// device, such as '/sys/class/leds/jogball-backlight/brightness'.  As of this writing, there
+// are 81 such failures on cuttlefish.  Instead of spamming the log reporting them, we do not
+// report such failures unless we're running at the DEBUG log level.
+class ErrorIgnoreEnoent {
+  public:
+    ErrorIgnoreEnoent()
+        : ignore_error_(errno == ENOENT &&
+                        android::base::GetMinimumLogSeverity() > android::base::DEBUG) {}
+    explicit ErrorIgnoreEnoent(int errno_to_append)
+        : error_(errno_to_append),
+          ignore_error_(errno_to_append == ENOENT &&
+                        android::base::GetMinimumLogSeverity() > android::base::DEBUG) {}
+
+    template <typename T>
+    operator android::base::expected<T, ResultError>() {
+        if (ignore_error_) {
+            return {};
+        }
+        return error_;
+    }
+
+    template <typename T>
+    ErrorIgnoreEnoent& operator<<(T&& t) {
+        error_ << t;
+        return *this;
+    }
+
+  private:
+    Error error_;
+    bool ignore_error_;
+};
+
+inline ErrorIgnoreEnoent ErrnoErrorIgnoreEnoent() {
+    return ErrorIgnoreEnoent(errno);
+}
+
+std::vector<std::string> late_import_paths;
+
 static constexpr std::chrono::nanoseconds kCommandRetryTimeout = 5s;
 
-static Result<Success> reboot_into_recovery(const std::vector<std::string>& options) {
+static Result<void> reboot_into_recovery(const std::vector<std::string>& options) {
     LOG(ERROR) << "Rebooting into recovery";
     std::string err;
     if (!write_bootloader_message(options, &err)) {
         return Error() << "Failed to set bootloader message: " << err;
     }
-    property_set("sys.powerctl", "reboot,recovery");
-    return Success();
+    trigger_shutdown("reboot,recovery");
+    return {};
 }
 
 template <typename F>
@@ -104,141 +157,153 @@
     }
 }
 
-static Result<Success> do_class_start(const BuiltinArguments& args) {
+static Result<void> do_class_start(const BuiltinArguments& args) {
     // Do not start a class if it has a property persist.dont_start_class.CLASS set to 1.
     if (android::base::GetBoolProperty("persist.init.dont_start_class." + args[1], false))
-        return Success();
+        return {};
     // Starting a class does not start services which are explicitly disabled.
     // They must  be started individually.
     for (const auto& service : ServiceList::GetInstance()) {
         if (service->classnames().count(args[1])) {
-            if (auto result = service->StartIfNotDisabled(); !result) {
+            if (auto result = service->StartIfNotDisabled(); !result.ok()) {
                 LOG(ERROR) << "Could not start service '" << service->name()
                            << "' as part of class '" << args[1] << "': " << result.error();
             }
         }
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_class_start_post_data(const BuiltinArguments& args) {
+static Result<void> do_class_start_post_data(const BuiltinArguments& args) {
     if (args.context != kInitContext) {
         return Error() << "command 'class_start_post_data' only available in init context";
     }
+    static bool is_apex_updatable = android::sysprop::ApexProperties::updatable().value_or(false);
+
+    if (!is_apex_updatable) {
+        // No need to start these on devices that don't support APEX, since they're not
+        // stopped either.
+        return {};
+    }
     for (const auto& service : ServiceList::GetInstance()) {
         if (service->classnames().count(args[1])) {
-            if (auto result = service->StartIfPostData(); !result) {
+            if (auto result = service->StartIfPostData(); !result.ok()) {
                 LOG(ERROR) << "Could not start service '" << service->name()
                            << "' as part of class '" << args[1] << "': " << result.error();
             }
         }
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_class_stop(const BuiltinArguments& args) {
+static Result<void> do_class_stop(const BuiltinArguments& args) {
     ForEachServiceInClass(args[1], &Service::Stop);
-    return Success();
+    return {};
 }
 
-static Result<Success> do_class_reset(const BuiltinArguments& args) {
+static Result<void> do_class_reset(const BuiltinArguments& args) {
     ForEachServiceInClass(args[1], &Service::Reset);
-    return Success();
+    return {};
 }
 
-static Result<Success> do_class_reset_post_data(const BuiltinArguments& args) {
+static Result<void> do_class_reset_post_data(const BuiltinArguments& args) {
     if (args.context != kInitContext) {
         return Error() << "command 'class_reset_post_data' only available in init context";
     }
+    static bool is_apex_updatable = android::sysprop::ApexProperties::updatable().value_or(false);
+    if (!is_apex_updatable) {
+        // No need to stop these on devices that don't support APEX.
+        return {};
+    }
     ForEachServiceInClass(args[1], &Service::ResetIfPostData);
-    return Success();
+    return {};
 }
 
-static Result<Success> do_class_restart(const BuiltinArguments& args) {
+static Result<void> do_class_restart(const BuiltinArguments& args) {
     // Do not restart a class if it has a property persist.dont_start_class.CLASS set to 1.
     if (android::base::GetBoolProperty("persist.init.dont_start_class." + args[1], false))
-        return Success();
+        return {};
     ForEachServiceInClass(args[1], &Service::Restart);
-    return Success();
+    return {};
 }
 
-static Result<Success> do_domainname(const BuiltinArguments& args) {
-    if (auto result = WriteFile("/proc/sys/kernel/domainname", args[1]); !result) {
+static Result<void> do_domainname(const BuiltinArguments& args) {
+    if (auto result = WriteFile("/proc/sys/kernel/domainname", args[1]); !result.ok()) {
         return Error() << "Unable to write to /proc/sys/kernel/domainname: " << result.error();
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_enable(const BuiltinArguments& args) {
+static Result<void> do_enable(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindService(args[1]);
     if (!svc) return Error() << "Could not find service";
 
-    if (auto result = svc->Enable(); !result) {
+    if (auto result = svc->Enable(); !result.ok()) {
         return Error() << "Could not enable service: " << result.error();
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_exec(const BuiltinArguments& args) {
+static Result<void> do_exec(const BuiltinArguments& args) {
     auto service = Service::MakeTemporaryOneshotService(args.args);
-    if (!service) {
-        return Error() << "Could not create exec service";
+    if (!service.ok()) {
+        return Error() << "Could not create exec service: " << service.error();
     }
-    if (auto result = service->ExecStart(); !result) {
+    if (auto result = (*service)->ExecStart(); !result.ok()) {
         return Error() << "Could not start exec service: " << result.error();
     }
 
-    ServiceList::GetInstance().AddService(std::move(service));
-    return Success();
+    ServiceList::GetInstance().AddService(std::move(*service));
+    return {};
 }
 
-static Result<Success> do_exec_background(const BuiltinArguments& args) {
+static Result<void> do_exec_background(const BuiltinArguments& args) {
     auto service = Service::MakeTemporaryOneshotService(args.args);
-    if (!service) {
-        return Error() << "Could not create exec background service";
+    if (!service.ok()) {
+        return Error() << "Could not create exec background service: " << service.error();
     }
-    if (auto result = service->Start(); !result) {
+    if (auto result = (*service)->Start(); !result.ok()) {
         return Error() << "Could not start exec background service: " << result.error();
     }
 
-    ServiceList::GetInstance().AddService(std::move(service));
-    return Success();
+    ServiceList::GetInstance().AddService(std::move(*service));
+    return {};
 }
 
-static Result<Success> do_exec_start(const BuiltinArguments& args) {
+static Result<void> do_exec_start(const BuiltinArguments& args) {
     Service* service = ServiceList::GetInstance().FindService(args[1]);
     if (!service) {
         return Error() << "Service not found";
     }
 
-    if (auto result = service->ExecStart(); !result) {
+    if (auto result = service->ExecStart(); !result.ok()) {
         return Error() << "Could not start exec service: " << result.error();
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_export(const BuiltinArguments& args) {
+static Result<void> do_export(const BuiltinArguments& args) {
     if (setenv(args[1].c_str(), args[2].c_str(), 1) == -1) {
         return ErrnoError() << "setenv() failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_hostname(const BuiltinArguments& args) {
-    if (auto result = WriteFile("/proc/sys/kernel/hostname", args[1]); !result) {
+static Result<void> do_hostname(const BuiltinArguments& args) {
+    if (auto result = WriteFile("/proc/sys/kernel/hostname", args[1]); !result.ok()) {
         return Error() << "Unable to write to /proc/sys/kernel/hostname: " << result.error();
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_ifup(const BuiltinArguments& args) {
+static Result<void> do_ifup(const BuiltinArguments& args) {
     struct ifreq ifr;
 
     strlcpy(ifr.ifr_name, args[1].c_str(), IFNAMSIZ);
 
-    unique_fd s(TEMP_FAILURE_RETRY(socket(AF_INET, SOCK_DGRAM, 0)));
+    unique_fd s(TEMP_FAILURE_RETRY(socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0)));
     if (s < 0) return ErrnoError() << "opening socket failed";
 
     if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0) {
@@ -251,10 +316,10 @@
         return ErrnoError() << "ioctl(..., SIOCSIFFLAGS, ...) failed";
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_insmod(const BuiltinArguments& args) {
+static Result<void> do_insmod(const BuiltinArguments& args) {
     int flags = 0;
     auto it = args.begin() + 1;
 
@@ -272,91 +337,93 @@
     int rc = syscall(__NR_finit_module, fd.get(), options.c_str(), flags);
     if (rc == -1) return ErrnoError() << "finit_module for \"" << filename << "\" failed";
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_interface_restart(const BuiltinArguments& args) {
+static Result<void> do_interface_restart(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindInterface(args[1]);
     if (!svc) return Error() << "interface " << args[1] << " not found";
     svc->Restart();
-    return Success();
+    return {};
 }
 
-static Result<Success> do_interface_start(const BuiltinArguments& args) {
+static Result<void> do_interface_start(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindInterface(args[1]);
     if (!svc) return Error() << "interface " << args[1] << " not found";
-    if (auto result = svc->Start(); !result) {
+    if (auto result = svc->Start(); !result.ok()) {
         return Error() << "Could not start interface: " << result.error();
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_interface_stop(const BuiltinArguments& args) {
+static Result<void> do_interface_stop(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindInterface(args[1]);
     if (!svc) return Error() << "interface " << args[1] << " not found";
     svc->Stop();
-    return Success();
+    return {};
 }
 
-// mkdir <path> [mode] [owner] [group]
-static Result<Success> do_mkdir(const BuiltinArguments& args) {
-    mode_t mode = 0755;
-    if (args.size() >= 3) {
-        mode = std::strtoul(args[2].c_str(), 0, 8);
+static Result<void> make_dir_with_options(const MkdirOptions& options) {
+    std::string ref_basename;
+    if (options.ref_option == "ref") {
+        ref_basename = fscrypt_key_ref;
+    } else if (options.ref_option == "per_boot_ref") {
+        ref_basename = fscrypt_key_per_boot_ref;
+    } else {
+        return Error() << "Unknown key option: '" << options.ref_option << "'";
     }
 
-    if (!make_dir(args[1], mode)) {
-        /* chmod in case the directory already exists */
-        if (errno == EEXIST) {
-            if (fchmodat(AT_FDCWD, args[1].c_str(), mode, AT_SYMLINK_NOFOLLOW) == -1) {
-                return ErrnoError() << "fchmodat() failed";
-            }
-        } else {
-            return ErrnoError() << "mkdir() failed";
+    struct stat mstat;
+    if (lstat(options.target.c_str(), &mstat) != 0) {
+        if (errno != ENOENT) {
+            return ErrnoError() << "lstat() failed on " << options.target;
+        }
+        if (!make_dir(options.target, options.mode)) {
+            return ErrnoErrorIgnoreEnoent() << "mkdir() failed on " << options.target;
+        }
+        if (lstat(options.target.c_str(), &mstat) != 0) {
+            return ErrnoError() << "lstat() failed on new " << options.target;
         }
     }
-
-    if (args.size() >= 4) {
-        auto uid = DecodeUid(args[3]);
-        if (!uid) {
-            return Error() << "Unable to decode UID for '" << args[3] << "': " << uid.error();
+    if (!S_ISDIR(mstat.st_mode)) {
+        return Error() << "Not a directory on " << options.target;
+    }
+    bool needs_chmod = (mstat.st_mode & ~S_IFMT) != options.mode;
+    if ((options.uid != static_cast<uid_t>(-1) && options.uid != mstat.st_uid) ||
+        (options.gid != static_cast<gid_t>(-1) && options.gid != mstat.st_gid)) {
+        if (lchown(options.target.c_str(), options.uid, options.gid) == -1) {
+            return ErrnoError() << "lchown failed on " << options.target;
         }
-        Result<gid_t> gid = -1;
-
-        if (args.size() == 5) {
-            gid = DecodeUid(args[4]);
-            if (!gid) {
-                return Error() << "Unable to decode GID for '" << args[3] << "': " << gid.error();
-            }
-        }
-
-        if (lchown(args[1].c_str(), *uid, *gid) == -1) {
-            return ErrnoError() << "lchown failed";
-        }
-
-        /* chown may have cleared S_ISUID and S_ISGID, chmod again */
-        if (mode & (S_ISUID | S_ISGID)) {
-            if (fchmodat(AT_FDCWD, args[1].c_str(), mode, AT_SYMLINK_NOFOLLOW) == -1) {
-                return ErrnoError() << "fchmodat failed";
-            }
+        // chown may have cleared S_ISUID and S_ISGID, chmod again
+        needs_chmod = true;
+    }
+    if (needs_chmod) {
+        if (fchmodat(AT_FDCWD, options.target.c_str(), options.mode, AT_SYMLINK_NOFOLLOW) == -1) {
+            return ErrnoError() << "fchmodat() failed on " << options.target;
         }
     }
-
     if (fscrypt_is_native()) {
-        if (fscrypt_set_directory_policy(args[1].c_str())) {
+        if (!FscryptSetDirectoryPolicy(ref_basename, options.fscrypt_action, options.target)) {
             return reboot_into_recovery(
-                {"--prompt_and_wipe_data", "--reason=set_policy_failed:"s + args[1]});
+                    {"--prompt_and_wipe_data", "--reason=set_policy_failed:"s + options.target});
         }
     }
-    return Success();
+    return {};
+}
+
+// mkdir <path> [mode] [owner] [group] [<option> ...]
+static Result<void> do_mkdir(const BuiltinArguments& args) {
+    auto options = ParseMkdir(args.args);
+    if (!options.ok()) return options.error();
+    return make_dir_with_options(*options);
 }
 
 /* umount <path> */
-static Result<Success> do_umount(const BuiltinArguments& args) {
+static Result<void> do_umount(const BuiltinArguments& args) {
     if (umount(args[1].c_str()) < 0) {
         return ErrnoError() << "umount() failed";
     }
-    return Success();
+    return {};
 }
 
 static struct {
@@ -384,7 +451,7 @@
 #define DATA_MNT_POINT "/data"
 
 /* mount <type> <device> <path> <flags ...> <options> */
-static Result<Success> do_mount(const BuiltinArguments& args) {
+static Result<void> do_mount(const BuiltinArguments& args) {
     const char* options = nullptr;
     unsigned flags = 0;
     bool wait = false;
@@ -431,7 +498,7 @@
                         ioctl(loop, LOOP_CLR_FD, 0);
                         return ErrnoError() << "mount() failed";
                     }
-                    return Success();
+                    return {};
                 }
             }
         }
@@ -441,31 +508,31 @@
         if (wait)
             wait_for_file(source, kCommandRetryTimeout);
         if (mount(source, target, system, flags, options) < 0) {
-            return ErrnoError() << "mount() failed";
+            return ErrnoErrorIgnoreEnoent() << "mount() failed";
         }
 
     }
 
-    return Success();
+    return {};
 }
 
 /* Imports .rc files from the specified paths. Default ones are applied if none is given.
  *
- * start_index: index of the first path in the args list
+ * rc_paths: list of paths to rc files to import
  */
-static void import_late(const std::vector<std::string>& args, size_t start_index, size_t end_index) {
+static void import_late(const std::vector<std::string>& rc_paths) {
     auto& action_manager = ActionManager::GetInstance();
     auto& service_list = ServiceList::GetInstance();
     Parser parser = CreateParser(action_manager, service_list);
-    if (end_index <= start_index) {
+    if (rc_paths.empty()) {
         // Fallbacks for partitions on which early mount isn't enabled.
         for (const auto& path : late_import_paths) {
             parser.ParseConfig(path);
         }
         late_import_paths.clear();
     } else {
-        for (size_t i = start_index; i < end_index; ++i) {
-            parser.ParseConfig(args[i]);
+        for (const auto& rc_path : rc_paths) {
+            parser.ParseConfig(rc_path);
         }
     }
 
@@ -474,78 +541,6 @@
     if (false) DumpState();
 }
 
-/* handle_fstab
- *
- *  Read the given fstab file and execute func on it.
- */
-static Result<int> handle_fstab(const std::string& fstabfile, std::function<int(Fstab*)> func) {
-    /*
-     * Call fs_mgr_[u]mount_all() to [u]mount all filesystems.  We fork(2) and
-     * do the call in the child to provide protection to the main init
-     * process if anything goes wrong (crash or memory leak), and wait for
-     * the child to finish in the parent.
-     */
-    pid_t pid = fork();
-    if (pid > 0) {
-        /* Parent.  Wait for the child to return */
-        int status;
-        int wp_ret = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0));
-        if (wp_ret == -1) {
-            // Unexpected error code. We will continue anyway.
-            PLOG(WARNING) << "waitpid failed";
-        }
-
-        if (WIFEXITED(status)) {
-            return WEXITSTATUS(status);
-        } else {
-            return Error() << "child aborted";
-        }
-    } else if (pid == 0) {
-        /* child, call fs_mgr_[u]mount_all() */
-
-        // So we can always see what fs_mgr_[u]mount_all() does.
-        // Only needed if someone explicitly changes the default log level in their init.rc.
-        android::base::ScopedLogSeverity info(android::base::INFO);
-
-        Fstab fstab;
-        ReadFstabFromFile(fstabfile, &fstab);
-
-        int child_ret = func(&fstab);
-
-        _exit(child_ret);
-    } else {
-        return Error() << "fork() failed";
-    }
-}
-
-/* mount_fstab
- *
- *  Call fs_mgr_mount_all() to mount the given fstab
- */
-static Result<int> mount_fstab(const std::string& fstabfile, int mount_mode) {
-    return handle_fstab(fstabfile, [mount_mode](Fstab* fstab) {
-        int ret = fs_mgr_mount_all(fstab, mount_mode);
-        if (ret == -1) {
-            PLOG(ERROR) << "fs_mgr_mount_all returned an error";
-        }
-        return ret;
-    });
-}
-
-/* umount_fstab
- *
- *  Call fs_mgr_umount_all() to umount the given fstab
- */
-static Result<int> umount_fstab(const std::string& fstabfile) {
-    return handle_fstab(fstabfile, [](Fstab* fstab) {
-        int ret = fs_mgr_umount_all(fstab);
-        if (ret != 0) {
-            PLOG(ERROR) << "fs_mgr_umount_all returned " << ret;
-        }
-        return ret;
-    });
-}
-
 /* Queue event based on fs_mgr return code.
  *
  * code: return code of fs_mgr_mount_all
@@ -555,23 +550,37 @@
  *
  * return code is processed based on input code
  */
-static Result<Success> queue_fs_event(int code) {
+static Result<void> queue_fs_event(int code, bool userdata_remount) {
     if (code == FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION) {
+        if (userdata_remount) {
+            // FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION should only happen on FDE devices. Since we don't
+            // support userdata remount on FDE devices, this should never been triggered. Time to
+            // panic!
+            LOG(ERROR) << "Userdata remount is not supported on FDE devices. How did you get here?";
+            trigger_shutdown("reboot,requested-userdata-remount-on-fde-device");
+        }
         ActionManager::GetInstance().QueueEventTrigger("encrypt");
-        return Success();
+        return {};
     } else if (code == FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED) {
-        property_set("ro.crypto.state", "encrypted");
-        property_set("ro.crypto.type", "block");
+        if (userdata_remount) {
+            // FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED should only happen on FDE devices. Since we
+            // don't support userdata remount on FDE devices, this should never been triggered.
+            // Time to panic!
+            LOG(ERROR) << "Userdata remount is not supported on FDE devices. How did you get here?";
+            trigger_shutdown("reboot,requested-userdata-remount-on-fde-device");
+        }
+        SetProperty("ro.crypto.state", "encrypted");
+        SetProperty("ro.crypto.type", "block");
         ActionManager::GetInstance().QueueEventTrigger("defaultcrypto");
-        return Success();
+        return {};
     } else if (code == FS_MGR_MNTALL_DEV_NOT_ENCRYPTED) {
-        property_set("ro.crypto.state", "unencrypted");
+        SetProperty("ro.crypto.state", "unencrypted");
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
-        return Success();
+        return {};
     } else if (code == FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE) {
-        property_set("ro.crypto.state", "unsupported");
+        SetProperty("ro.crypto.state", "unsupported");
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
-        return Success();
+        return {};
     } else if (code == FS_MGR_MNTALL_DEV_NEEDS_RECOVERY) {
         /* Setup a wipe via recovery, and reboot into recovery */
         if (android::gsi::IsGsiRunning()) {
@@ -582,38 +591,38 @@
         return reboot_into_recovery(options);
         /* If reboot worked, there is no return. */
     } else if (code == FS_MGR_MNTALL_DEV_FILE_ENCRYPTED) {
-        if (fscrypt_install_keyring()) {
-            return Error() << "fscrypt_install_keyring() failed";
+        if (!FscryptInstallKeyring()) {
+            return Error() << "FscryptInstallKeyring() failed";
         }
-        property_set("ro.crypto.state", "encrypted");
-        property_set("ro.crypto.type", "file");
+        SetProperty("ro.crypto.state", "encrypted");
+        SetProperty("ro.crypto.type", "file");
 
         // Although encrypted, we have device key, so we do not need to
         // do anything different from the nonencrypted case.
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
-        return Success();
+        return {};
     } else if (code == FS_MGR_MNTALL_DEV_IS_METADATA_ENCRYPTED) {
-        if (fscrypt_install_keyring()) {
-            return Error() << "fscrypt_install_keyring() failed";
+        if (!FscryptInstallKeyring()) {
+            return Error() << "FscryptInstallKeyring() failed";
         }
-        property_set("ro.crypto.state", "encrypted");
-        property_set("ro.crypto.type", "file");
+        SetProperty("ro.crypto.state", "encrypted");
+        SetProperty("ro.crypto.type", "file");
 
         // Although encrypted, vold has already set the device up, so we do not need to
         // do anything different from the nonencrypted case.
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
-        return Success();
+        return {};
     } else if (code == FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION) {
-        if (fscrypt_install_keyring()) {
-            return Error() << "fscrypt_install_keyring() failed";
+        if (!FscryptInstallKeyring()) {
+            return Error() << "FscryptInstallKeyring() failed";
         }
-        property_set("ro.crypto.state", "encrypted");
-        property_set("ro.crypto.type", "file");
+        SetProperty("ro.crypto.state", "encrypted");
+        SetProperty("ro.crypto.type", "file");
 
         // Although encrypted, vold has already set the device up, so we do not need to
         // do anything different from the nonencrypted case.
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
-        return Success();
+        return {};
     } else if (code > 0) {
         Error() << "fs_mgr_mount_all() returned unexpected error " << code;
     }
@@ -622,122 +631,156 @@
     return Error() << "Invalid code: " << code;
 }
 
-/* mount_all <fstab> [ <path> ]* [--<options>]*
+static int initial_mount_fstab_return_code = -1;
+
+/* <= Q: mount_all <fstab> [ <path> ]* [--<options>]*
+ * >= R: mount_all [ <fstab> ] [--<options>]*
  *
  * This function might request a reboot, in which case it will
  * not return.
  */
-static Result<Success> do_mount_all(const BuiltinArguments& args) {
-    std::size_t na = 0;
-    bool import_rc = true;
-    bool queue_event = true;
-    int mount_mode = MOUNT_MODE_DEFAULT;
-    const auto& fstabfile = args[1];
-    std::size_t path_arg_end = args.size();
-    const char* prop_post_fix = "default";
+static Result<void> do_mount_all(const BuiltinArguments& args) {
+    auto mount_all = ParseMountAll(args.args);
+    if (!mount_all.ok()) return mount_all.error();
 
-    for (na = args.size() - 1; na > 1; --na) {
-        if (args[na] == "--early") {
-            path_arg_end = na;
-            queue_event = false;
-            mount_mode = MOUNT_MODE_EARLY;
-            prop_post_fix = "early";
-        } else if (args[na] == "--late") {
-            path_arg_end = na;
-            import_rc = false;
-            mount_mode = MOUNT_MODE_LATE;
-            prop_post_fix = "late";
-        }
+    const char* prop_post_fix = "default";
+    bool queue_event = true;
+    if (mount_all->mode == MOUNT_MODE_EARLY) {
+        prop_post_fix = "early";
+        queue_event = false;
+    } else if (mount_all->mode == MOUNT_MODE_LATE) {
+        prop_post_fix = "late";
     }
 
     std::string prop_name = "ro.boottime.init.mount_all."s + prop_post_fix;
     android::base::Timer t;
-    auto mount_fstab_return_code = mount_fstab(fstabfile, mount_mode);
-    if (!mount_fstab_return_code) {
-        return Error() << "mount_fstab() failed " << mount_fstab_return_code.error();
-    }
-    property_set(prop_name, std::to_string(t.duration().count()));
 
-    if (import_rc) {
-        /* Paths of .rc files are specified at the 2nd argument and beyond */
-        import_late(args.args, 2, path_arg_end);
+    Fstab fstab;
+    if (mount_all->fstab_path.empty()) {
+        if (!ReadDefaultFstab(&fstab)) {
+            return Error() << "Could not read default fstab";
+        }
+    } else {
+        if (!ReadFstabFromFile(mount_all->fstab_path, &fstab)) {
+            return Error() << "Could not read fstab";
+        }
+    }
+
+    auto mount_fstab_return_code = fs_mgr_mount_all(&fstab, mount_all->mode);
+    SetProperty(prop_name, std::to_string(t.duration().count()));
+
+    if (mount_all->import_rc) {
+        import_late(mount_all->rc_paths);
     }
 
     if (queue_event) {
         /* queue_fs_event will queue event based on mount_fstab return code
          * and return processed return code*/
-        auto queue_fs_result = queue_fs_event(*mount_fstab_return_code);
-        if (!queue_fs_result) {
+        initial_mount_fstab_return_code = mount_fstab_return_code;
+        auto queue_fs_result = queue_fs_event(mount_fstab_return_code, false);
+        if (!queue_fs_result.ok()) {
             return Error() << "queue_fs_event() failed: " << queue_fs_result.error();
         }
     }
 
-    return Success();
+    return {};
 }
 
-/* umount_all <fstab> */
-static Result<Success> do_umount_all(const BuiltinArguments& args) {
-    auto umount_fstab_return_code = umount_fstab(args[1]);
-    if (!umount_fstab_return_code) {
-        return Error() << "umount_fstab() failed " << umount_fstab_return_code.error();
-    }
-    return Success();
-}
+/* umount_all [ <fstab> ] */
+static Result<void> do_umount_all(const BuiltinArguments& args) {
+    auto umount_all = ParseUmountAll(args.args);
+    if (!umount_all.ok()) return umount_all.error();
 
-static Result<Success> do_swapon_all(const BuiltinArguments& args) {
     Fstab fstab;
-    if (!ReadFstabFromFile(args[1], &fstab)) {
-        return Error() << "Could not read fstab '" << args[1] << "'";
+    if (umount_all->empty()) {
+        if (!ReadDefaultFstab(&fstab)) {
+            return Error() << "Could not read default fstab";
+        }
+    } else {
+        if (!ReadFstabFromFile(*umount_all, &fstab)) {
+            return Error() << "Could not read fstab";
+        }
+    }
+
+    if (auto result = fs_mgr_umount_all(&fstab); result != 0) {
+        return Error() << "umount_fstab() failed " << result;
+    }
+    return {};
+}
+
+/* swapon_all [ <fstab> ] */
+static Result<void> do_swapon_all(const BuiltinArguments& args) {
+    auto swapon_all = ParseSwaponAll(args.args);
+    if (!swapon_all.ok()) return swapon_all.error();
+
+    Fstab fstab;
+    if (swapon_all->empty()) {
+        if (!ReadDefaultFstab(&fstab)) {
+            return Error() << "Could not read default fstab";
+        }
+    } else {
+        if (!ReadFstabFromFile(*swapon_all, &fstab)) {
+            return Error() << "Could not read fstab '" << *swapon_all << "'";
+        }
     }
 
     if (!fs_mgr_swapon_all(fstab)) {
         return Error() << "fs_mgr_swapon_all() failed";
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_setprop(const BuiltinArguments& args) {
-    property_set(args[1], args[2]);
-    return Success();
+static Result<void> do_setprop(const BuiltinArguments& args) {
+    if (StartsWith(args[1], "ctl.")) {
+        return Error()
+               << "Cannot set ctl. properties from init; call the Service functions directly";
+    }
+    if (args[1] == kRestoreconProperty) {
+        return Error() << "Cannot set '" << kRestoreconProperty
+                       << "' from init; use the restorecon builtin directly";
+    }
+
+    SetProperty(args[1], args[2]);
+    return {};
 }
 
-static Result<Success> do_setrlimit(const BuiltinArguments& args) {
+static Result<void> do_setrlimit(const BuiltinArguments& args) {
     auto rlimit = ParseRlimit(args.args);
-    if (!rlimit) return rlimit.error();
+    if (!rlimit.ok()) return rlimit.error();
 
     if (setrlimit(rlimit->first, &rlimit->second) == -1) {
         return ErrnoError() << "setrlimit failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_start(const BuiltinArguments& args) {
+static Result<void> do_start(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindService(args[1]);
     if (!svc) return Error() << "service " << args[1] << " not found";
-    if (auto result = svc->Start(); !result) {
-        return Error() << "Could not start service: " << result.error();
+    if (auto result = svc->Start(); !result.ok()) {
+        return ErrorIgnoreEnoent() << "Could not start service: " << result.error();
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_stop(const BuiltinArguments& args) {
+static Result<void> do_stop(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindService(args[1]);
     if (!svc) return Error() << "service " << args[1] << " not found";
     svc->Stop();
-    return Success();
+    return {};
 }
 
-static Result<Success> do_restart(const BuiltinArguments& args) {
+static Result<void> do_restart(const BuiltinArguments& args) {
     Service* svc = ServiceList::GetInstance().FindService(args[1]);
     if (!svc) return Error() << "service " << args[1] << " not found";
     svc->Restart();
-    return Success();
+    return {};
 }
 
-static Result<Success> do_trigger(const BuiltinArguments& args) {
+static Result<void> do_trigger(const BuiltinArguments& args) {
     ActionManager::GetInstance().QueueEventTrigger(args[1]);
-    return Success();
+    return {};
 }
 
 static int MakeSymlink(const std::string& target, const std::string& linkpath) {
@@ -758,33 +801,30 @@
     return rc;
 }
 
-static Result<Success> do_symlink(const BuiltinArguments& args) {
+static Result<void> do_symlink(const BuiltinArguments& args) {
     if (MakeSymlink(args[1], args[2]) < 0) {
         // The symlink builtin is often used to create symlinks for older devices to be backwards
         // compatible with new paths, therefore we skip reporting this error.
-        if (errno == EEXIST && android::base::GetMinimumLogSeverity() > android::base::DEBUG) {
-            return Success();
-        }
-        return ErrnoError() << "symlink() failed";
+        return ErrnoErrorIgnoreEnoent() << "symlink() failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_rm(const BuiltinArguments& args) {
+static Result<void> do_rm(const BuiltinArguments& args) {
     if (unlink(args[1].c_str()) < 0) {
         return ErrnoError() << "unlink() failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_rmdir(const BuiltinArguments& args) {
+static Result<void> do_rmdir(const BuiltinArguments& args) {
     if (rmdir(args[1].c_str()) < 0) {
         return ErrnoError() << "rmdir() failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_sysclktz(const BuiltinArguments& args) {
+static Result<void> do_sysclktz(const BuiltinArguments& args) {
     struct timezone tz = {};
     if (!android::base::ParseInt(args[1], &tz.tz_minuteswest)) {
         return Error() << "Unable to parse mins_west_of_gmt";
@@ -793,21 +833,10 @@
     if (settimeofday(nullptr, &tz) == -1) {
         return ErrnoError() << "settimeofday() failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_verity_load_state(const BuiltinArguments& args) {
-    int mode = -1;
-    bool loaded = fs_mgr_load_verity_state(&mode);
-    if (loaded && mode != VERITY_MODE_DEFAULT) {
-        ActionManager::GetInstance().QueueEventTrigger("verity-logging");
-    }
-    if (!loaded) return Error() << "Could not load verity state";
-
-    return Success();
-}
-
-static Result<Success> do_verity_update_state(const BuiltinArguments& args) {
+static Result<void> do_verity_update_state(const BuiltinArguments& args) {
     int mode;
     if (!fs_mgr_load_verity_state(&mode)) {
         return Error() << "fs_mgr_load_verity_state() failed";
@@ -826,22 +855,23 @@
         // To be consistent in vboot 1.0 and vboot 2.0 (AVB), use "system" for the partition even
         // for system as root, so it has property [partition.system.verified].
         std::string partition = entry.mount_point == "/" ? "system" : Basename(entry.mount_point);
-        property_set("partition." + partition + ".verified", std::to_string(mode));
+        SetProperty("partition." + partition + ".verified", std::to_string(mode));
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_write(const BuiltinArguments& args) {
-    if (auto result = WriteFile(args[1], args[2]); !result) {
-        return Error() << "Unable to write to file '" << args[1] << "': " << result.error();
+static Result<void> do_write(const BuiltinArguments& args) {
+    if (auto result = WriteFile(args[1], args[2]); !result.ok()) {
+        return ErrorIgnoreEnoent()
+               << "Unable to write to file '" << args[1] << "': " << result.error();
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> readahead_file(const std::string& filename, bool fully) {
-    android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(filename.c_str(), O_RDONLY)));
+static Result<void> readahead_file(const std::string& filename, bool fully) {
+    android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(filename.c_str(), O_RDONLY | O_CLOEXEC)));
     if (fd == -1) {
         return ErrnoError() << "Error opening file";
     }
@@ -860,10 +890,10 @@
             return ErrnoError() << "Error reading file";
         }
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_readahead(const BuiltinArguments& args) {
+static Result<void> do_readahead(const BuiltinArguments& args) {
     struct stat sb;
 
     if (stat(args[1].c_str(), &sb)) {
@@ -890,7 +920,7 @@
         }
         android::base::Timer t;
         if (S_ISREG(sb.st_mode)) {
-            if (auto result = readahead_file(args[1], readfully); !result) {
+            if (auto result = readahead_file(args[1], readfully); !result.ok()) {
                 LOG(WARNING) << "Unable to readahead '" << args[1] << "': " << result.error();
                 _exit(EXIT_FAILURE);
             }
@@ -907,7 +937,7 @@
                  ftsent = fts_read(fts.get())) {
                 if (ftsent->fts_info & FTS_F) {
                     const std::string filename = ftsent->fts_accpath;
-                    if (auto result = readahead_file(filename, readfully); !result) {
+                    if (auto result = readahead_file(filename, readfully); !result.ok()) {
                         LOG(WARNING)
                             << "Unable to readahead '" << filename << "': " << result.error();
                     }
@@ -919,24 +949,24 @@
     } else if (pid < 0) {
         return ErrnoError() << "Fork failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_copy(const BuiltinArguments& args) {
+static Result<void> do_copy(const BuiltinArguments& args) {
     auto file_contents = ReadFile(args[1]);
-    if (!file_contents) {
+    if (!file_contents.ok()) {
         return Error() << "Could not read input file '" << args[1] << "': " << file_contents.error();
     }
-    if (auto result = WriteFile(args[2], *file_contents); !result) {
+    if (auto result = WriteFile(args[2], *file_contents); !result.ok()) {
         return Error() << "Could not write to output file '" << args[2] << "': " << result.error();
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_chown(const BuiltinArguments& args) {
+static Result<void> do_chown(const BuiltinArguments& args) {
     auto uid = DecodeUid(args[1]);
-    if (!uid) {
+    if (!uid.ok()) {
         return Error() << "Unable to decode UID for '" << args[1] << "': " << uid.error();
     }
 
@@ -946,16 +976,16 @@
 
     if (args.size() == 4) {
         gid = DecodeUid(args[2]);
-        if (!gid) {
+        if (!gid.ok()) {
             return Error() << "Unable to decode GID for '" << args[2] << "': " << gid.error();
         }
     }
 
     if (lchown(path.c_str(), *uid, *gid) == -1) {
-        return ErrnoError() << "lchown() failed";
+        return ErrnoErrorIgnoreEnoent() << "lchown() failed";
     }
 
-    return Success();
+    return {};
 }
 
 static mode_t get_mode(const char *s) {
@@ -971,63 +1001,40 @@
     return mode;
 }
 
-static Result<Success> do_chmod(const BuiltinArguments& args) {
+static Result<void> do_chmod(const BuiltinArguments& args) {
     mode_t mode = get_mode(args[1].c_str());
     if (fchmodat(AT_FDCWD, args[2].c_str(), mode, AT_SYMLINK_NOFOLLOW) < 0) {
-        return ErrnoError() << "fchmodat() failed";
+        return ErrnoErrorIgnoreEnoent() << "fchmodat() failed";
     }
-    return Success();
+    return {};
 }
 
-static Result<Success> do_restorecon(const BuiltinArguments& args) {
+static Result<void> do_restorecon(const BuiltinArguments& args) {
+    auto restorecon_info = ParseRestorecon(args.args);
+    if (!restorecon_info.ok()) {
+        return restorecon_info.error();
+    }
+
+    const auto& [flag, paths] = *restorecon_info;
+
     int ret = 0;
-
-    struct flag_type {const char* name; int value;};
-    static const flag_type flags[] = {
-        {"--recursive", SELINUX_ANDROID_RESTORECON_RECURSE},
-        {"--skip-ce", SELINUX_ANDROID_RESTORECON_SKIPCE},
-        {"--cross-filesystems", SELINUX_ANDROID_RESTORECON_CROSS_FILESYSTEMS},
-        {0, 0}
-    };
-
-    int flag = 0;
-
-    bool in_flags = true;
-    for (size_t i = 1; i < args.size(); ++i) {
-        if (android::base::StartsWith(args[i], "--")) {
-            if (!in_flags) {
-                return Error() << "flags must precede paths";
-            }
-            bool found = false;
-            for (size_t j = 0; flags[j].name; ++j) {
-                if (args[i] == flags[j].name) {
-                    flag |= flags[j].value;
-                    found = true;
-                    break;
-                }
-            }
-            if (!found) {
-                return Error() << "bad flag " << args[i];
-            }
-        } else {
-            in_flags = false;
-            if (selinux_android_restorecon(args[i].c_str(), flag) < 0) {
-                ret = errno;
-            }
+    for (const auto& path : paths) {
+        if (selinux_android_restorecon(path.c_str(), flag) < 0) {
+            ret = errno;
         }
     }
 
-    if (ret) return ErrnoError() << "selinux_android_restorecon() failed";
-    return Success();
+    if (ret) return ErrnoErrorIgnoreEnoent() << "selinux_android_restorecon() failed";
+    return {};
 }
 
-static Result<Success> do_restorecon_recursive(const BuiltinArguments& args) {
+static Result<void> do_restorecon_recursive(const BuiltinArguments& args) {
     std::vector<std::string> non_const_args(args.args);
     non_const_args.insert(std::next(non_const_args.begin()), "--recursive");
     return do_restorecon({std::move(non_const_args), args.context});
 }
 
-static Result<Success> do_loglevel(const BuiltinArguments& args) {
+static Result<void> do_loglevel(const BuiltinArguments& args) {
     // TODO: support names instead/as well?
     int log_level = -1;
     android::base::ParseInt(args[1], &log_level);
@@ -1045,37 +1052,51 @@
             return Error() << "invalid log level " << log_level;
     }
     android::base::SetMinimumLogSeverity(severity);
-    return Success();
+    return {};
 }
 
-static Result<Success> do_load_persist_props(const BuiltinArguments& args) {
-    load_persist_props();
-    return Success();
+static Result<void> do_load_persist_props(const BuiltinArguments& args) {
+    // Devices with FDE have load_persist_props called twice; the first time when the temporary
+    // /data partition is mounted and then again once /data is truly mounted.  We do not want to
+    // read persistent properties from the temporary /data partition or mark persistent properties
+    // as having been loaded during the first call, so we return in that case.
+    std::string crypto_state = android::base::GetProperty("ro.crypto.state", "");
+    std::string crypto_type = android::base::GetProperty("ro.crypto.type", "");
+    if (crypto_state == "encrypted" && crypto_type == "block") {
+        static size_t num_calls = 0;
+        if (++num_calls == 1) return {};
+    }
+
+    SendLoadPersistentPropertiesMessage();
+
+    start_waiting_for_property("ro.persistent_properties.ready", "true");
+    return {};
 }
 
-static Result<Success> do_load_system_props(const BuiltinArguments& args) {
+static Result<void> do_load_system_props(const BuiltinArguments& args) {
     LOG(INFO) << "deprecated action `load_system_props` called.";
-    return Success();
+    return {};
 }
 
-static Result<Success> do_wait(const BuiltinArguments& args) {
+static Result<void> do_wait(const BuiltinArguments& args) {
     auto timeout = kCommandRetryTimeout;
     if (args.size() == 3) {
-        int timeout_int;
-        if (!android::base::ParseInt(args[2], &timeout_int)) {
+        double timeout_double;
+        if (!android::base::ParseDouble(args[2], &timeout_double, 0)) {
             return Error() << "failed to parse timeout";
         }
-        timeout = std::chrono::seconds(timeout_int);
+        timeout = std::chrono::duration_cast<std::chrono::nanoseconds>(
+                std::chrono::duration<double>(timeout_double));
     }
 
     if (wait_for_file(args[1].c_str(), timeout) != 0) {
         return Error() << "wait_for_file() failed";
     }
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_wait_for_prop(const BuiltinArguments& args) {
+static Result<void> do_wait_for_prop(const BuiltinArguments& args) {
     const char* name = args[1].c_str();
     const char* value = args[2].c_str();
     size_t value_len = strlen(value);
@@ -1089,80 +1110,152 @@
     if (!start_waiting_for_property(name, value)) {
         return Error() << "already waiting for a property";
     }
-    return Success();
+    return {};
 }
 
 static bool is_file_crypto() {
     return android::base::GetProperty("ro.crypto.type", "") == "file";
 }
 
-static Result<Success> ExecWithRebootOnFailure(const std::string& reboot_reason,
-                                               const BuiltinArguments& args) {
-    auto service = Service::MakeTemporaryOneshotService(args.args);
-    if (!service) {
-        return Error() << "Could not create exec service";
+static Result<void> ExecWithFunctionOnFailure(const std::vector<std::string>& args,
+                                              std::function<void(const std::string&)> function) {
+    auto service = Service::MakeTemporaryOneshotService(args);
+    if (!service.ok()) {
+        function("MakeTemporaryOneshotService failed: " + service.error().message());
     }
-    service->AddReapCallback([reboot_reason](const siginfo_t& siginfo) {
+    (*service)->AddReapCallback([function](const siginfo_t& siginfo) {
         if (siginfo.si_code != CLD_EXITED || siginfo.si_status != 0) {
-            // TODO (b/122850122): support this in gsi
+            function(StringPrintf("Exec service failed, status %d", siginfo.si_status));
+        }
+    });
+    if (auto result = (*service)->ExecStart(); !result.ok()) {
+        function("ExecStart failed: " + result.error().message());
+    }
+    ServiceList::GetInstance().AddService(std::move(*service));
+    return {};
+}
+
+static Result<void> ExecVdcRebootOnFailure(const std::string& vdc_arg) {
+    bool should_reboot_into_recovery = true;
+    auto reboot_reason = vdc_arg + "_failed";
+    if (android::sysprop::InitProperties::userspace_reboot_in_progress().value_or(false)) {
+        should_reboot_into_recovery = false;
+        reboot_reason = "userspace_failed," + vdc_arg;
+    }
+
+    auto reboot = [reboot_reason, should_reboot_into_recovery](const std::string& message) {
+        // TODO (b/122850122): support this in gsi
+        if (should_reboot_into_recovery) {
             if (fscrypt_is_native() && !android::gsi::IsGsiRunning()) {
-                LOG(ERROR) << "Rebooting into recovery, reason: " << reboot_reason;
+                LOG(ERROR) << message << ": Rebooting into recovery, reason: " << reboot_reason;
                 if (auto result = reboot_into_recovery(
                             {"--prompt_and_wipe_data", "--reason="s + reboot_reason});
-                    !result) {
+                    !result.ok()) {
                     LOG(FATAL) << "Could not reboot into recovery: " << result.error();
                 }
             } else {
                 LOG(ERROR) << "Failure (reboot suppressed): " << reboot_reason;
             }
+        } else {
+            LOG(ERROR) << message << ": rebooting, reason: " << reboot_reason;
+            trigger_shutdown("reboot," + reboot_reason);
         }
-    });
-    if (auto result = service->ExecStart(); !result) {
-        return Error() << "Could not start exec service: " << result.error();
-    }
-    ServiceList::GetInstance().AddService(std::move(service));
-    return Success();
+    };
+
+    std::vector<std::string> args = {"exec", "/system/bin/vdc", "--wait", "cryptfs", vdc_arg};
+    return ExecWithFunctionOnFailure(args, reboot);
 }
 
-static Result<Success> do_installkey(const BuiltinArguments& args) {
-    if (!is_file_crypto()) return Success();
+static Result<void> do_remount_userdata(const BuiltinArguments& args) {
+    if (initial_mount_fstab_return_code == -1) {
+        return Error() << "Calling remount_userdata too early";
+    }
+    Fstab fstab;
+    if (!ReadDefaultFstab(&fstab)) {
+        // TODO(b/135984674): should we reboot here?
+        return Error() << "Failed to read fstab";
+    }
+    // TODO(b/135984674): check that fstab contains /data.
+    if (auto rc = fs_mgr_remount_userdata_into_checkpointing(&fstab); rc < 0) {
+        trigger_shutdown("reboot,mount_userdata_failed");
+    }
+    if (auto result = queue_fs_event(initial_mount_fstab_return_code, true); !result.ok()) {
+        return Error() << "queue_fs_event() failed: " << result.error();
+    }
+    return {};
+}
+
+static Result<void> do_installkey(const BuiltinArguments& args) {
+    if (!is_file_crypto()) return {};
 
     auto unencrypted_dir = args[1] + fscrypt_unencrypted_folder;
     if (!make_dir(unencrypted_dir, 0700) && errno != EEXIST) {
         return ErrnoError() << "Failed to create " << unencrypted_dir;
     }
-    return ExecWithRebootOnFailure(
-        "enablefilecrypto_failed",
-        {{"exec", "/system/bin/vdc", "--wait", "cryptfs", "enablefilecrypto"}, args.context});
+    return ExecVdcRebootOnFailure("enablefilecrypto");
 }
 
-static Result<Success> do_init_user0(const BuiltinArguments& args) {
-    return ExecWithRebootOnFailure(
-        "init_user0_failed",
-        {{"exec", "/system/bin/vdc", "--wait", "cryptfs", "init_user0"}, args.context});
+static Result<void> do_init_user0(const BuiltinArguments& args) {
+    return ExecVdcRebootOnFailure("init_user0");
 }
 
-static Result<Success> do_mark_post_data(const BuiltinArguments& args) {
+static Result<void> do_mark_post_data(const BuiltinArguments& args) {
     ServiceList::GetInstance().MarkPostData();
 
-    return Success();
+    return {};
 }
 
-static Result<Success> do_parse_apex_configs(const BuiltinArguments& args) {
+static Result<void> GenerateLinkerConfiguration() {
+    const char* linkerconfig_binary = "/system/bin/linkerconfig";
+    const char* linkerconfig_target = "/linkerconfig";
+    const char* arguments[] = {linkerconfig_binary, "--target", linkerconfig_target};
+
+    if (logwrap_fork_execvp(arraysize(arguments), arguments, nullptr, false, LOG_KLOG, false,
+                            nullptr) != 0) {
+        return ErrnoError() << "failed to execute linkerconfig";
+    }
+
+    LOG(INFO) << "linkerconfig generated " << linkerconfig_target
+              << " with mounted APEX modules info";
+
+    return {};
+}
+
+static bool IsApexUpdatable() {
+    static bool updatable = android::sysprop::ApexProperties::updatable().value_or(false);
+    return updatable;
+}
+
+static Result<void> do_update_linker_config(const BuiltinArguments&) {
+    // If APEX is not updatable, then all APEX information are already included in the first
+    // linker config generation, so there is no need to update linker configuration again.
+    if (IsApexUpdatable()) {
+        return GenerateLinkerConfiguration();
+    }
+
+    return {};
+}
+
+static Result<void> parse_apex_configs() {
     glob_t glob_result;
-    // @ is added to filter out the later paths, which are bind mounts of the places
-    // where the APEXes are really mounted at. Otherwise, we will parse the
-    // same file twice.
-    static constexpr char glob_pattern[] = "/apex/*@*/etc/*.rc";
+    static constexpr char glob_pattern[] = "/apex/*/etc/*.rc";
     const int ret = glob(glob_pattern, GLOB_MARK, nullptr, &glob_result);
     if (ret != 0 && ret != GLOB_NOMATCH) {
         globfree(&glob_result);
         return Error() << "glob pattern '" << glob_pattern << "' failed";
     }
     std::vector<std::string> configs;
-    Parser parser = CreateServiceOnlyParser(ServiceList::GetInstance());
+    Parser parser = CreateServiceOnlyParser(ServiceList::GetInstance(), true);
     for (size_t i = 0; i < glob_result.gl_pathc; i++) {
-        configs.emplace_back(glob_result.gl_pathv[i]);
+        std::string path = glob_result.gl_pathv[i];
+        // Filter-out /apex/<name>@<ver> paths. The paths are bind-mounted to
+        // /apex/<name> paths, so unless we filter them out, we will parse the
+        // same file twice.
+        std::vector<std::string> paths = android::base::Split(path, "/");
+        if (paths.size() >= 3 && paths[2].find('@') != std::string::npos) {
+            continue;
+        }
+        configs.push_back(path);
     }
     globfree(&glob_result);
 
@@ -1176,25 +1269,68 @@
     }
     ServiceList::GetInstance().MarkServicesUpdate();
     if (success) {
-        return Success();
+        return {};
     } else {
         return Error() << "Could not parse apex configs";
     }
 }
 
-static Result<Success> do_enter_default_mount_ns(const BuiltinArguments& args) {
+/*
+ * Creates a directory under /data/misc/apexdata/ for each APEX.
+ */
+static Result<void> create_apex_data_dirs() {
+    auto dirp = std::unique_ptr<DIR, int (*)(DIR*)>(opendir("/apex"), closedir);
+    if (!dirp) {
+        return ErrnoError() << "Unable to open apex directory";
+    }
+    struct dirent* entry;
+    while ((entry = readdir(dirp.get())) != nullptr) {
+        if (entry->d_type != DT_DIR) continue;
+
+        const char* name = entry->d_name;
+        // skip any starting with "."
+        if (name[0] == '.') continue;
+
+        if (strchr(name, '@') != nullptr) continue;
+
+        auto path = "/data/misc/apexdata/" + std::string(name);
+        auto options = MkdirOptions{path, 0771, AID_ROOT, AID_SYSTEM, FscryptAction::kNone, "ref"};
+        make_dir_with_options(options);
+    }
+    return {};
+}
+
+static Result<void> do_perform_apex_config(const BuiltinArguments& args) {
+    auto create_dirs = create_apex_data_dirs();
+    if (!create_dirs.ok()) {
+        return create_dirs.error();
+    }
+    auto parse_configs = parse_apex_configs();
+    if (!parse_configs.ok()) {
+        return parse_configs.error();
+    }
+
+    auto update_linker_config = do_update_linker_config(args);
+    if (!update_linker_config.ok()) {
+        return update_linker_config.error();
+    }
+
+    return {};
+}
+
+static Result<void> do_enter_default_mount_ns(const BuiltinArguments& args) {
     if (SwitchToDefaultMountNamespace()) {
-        return Success();
+        return {};
     } else {
         return Error() << "Failed to enter into default mount namespace";
     }
 }
 
 // Builtin-function-map start
-const BuiltinFunctionMap::Map& BuiltinFunctionMap::map() const {
+const BuiltinFunctionMap& GetBuiltinFunctionMap() {
     constexpr std::size_t kMax = std::numeric_limits<std::size_t>::max();
     // clang-format off
-    static const Map builtin_functions = {
+    static const BuiltinFunctionMap builtin_functions = {
         {"bootchart",               {1,     1,    {false,  do_bootchart}}},
         {"chmod",                   {2,     2,    {true,   do_chmod}}},
         {"chown",                   {2,     3,    {true,   do_chown}}},
@@ -1223,17 +1359,19 @@
         {"load_system_props",       {0,     0,    {false,  do_load_system_props}}},
         {"loglevel",                {1,     1,    {false,  do_loglevel}}},
         {"mark_post_data",          {0,     0,    {false,  do_mark_post_data}}},
-        {"mkdir",                   {1,     4,    {true,   do_mkdir}}},
+        {"mkdir",                   {1,     6,    {true,   do_mkdir}}},
         // TODO: Do mount operations in vendor_init.
         // mount_all is currently too complex to run in vendor_init as it queues action triggers,
         // imports rc scripts, etc.  It should be simplified and run in vendor_init context.
         // mount and umount are run in the same context as mount_all for symmetry.
-        {"mount_all",               {1,     kMax, {false,  do_mount_all}}},
+        {"mount_all",               {0,     kMax, {false,  do_mount_all}}},
         {"mount",                   {3,     kMax, {false,  do_mount}}},
-        {"parse_apex_configs",      {0,     0,    {false,  do_parse_apex_configs}}},
+        {"perform_apex_config",     {0,     0,    {false,  do_perform_apex_config}}},
         {"umount",                  {1,     1,    {false,  do_umount}}},
-        {"umount_all",              {1,     1,    {false,  do_umount_all}}},
+        {"umount_all",              {0,     1,    {false,  do_umount_all}}},
+        {"update_linker_config",    {0,     0,    {false,  do_update_linker_config}}},
         {"readahead",               {1,     2,    {true,   do_readahead}}},
+        {"remount_userdata",        {0,     0,    {false,  do_remount_userdata}}},
         {"restart",                 {1,     1,    {false,  do_restart}}},
         {"restorecon",              {1,     kMax, {true,   do_restorecon}}},
         {"restorecon_recursive",    {1,     kMax, {true,   do_restorecon_recursive}}},
@@ -1243,12 +1381,11 @@
         {"setrlimit",               {3,     3,    {false,  do_setrlimit}}},
         {"start",                   {1,     1,    {false,  do_start}}},
         {"stop",                    {1,     1,    {false,  do_stop}}},
-        {"swapon_all",              {1,     1,    {false,  do_swapon_all}}},
+        {"swapon_all",              {0,     1,    {false,  do_swapon_all}}},
         {"enter_default_mount_ns",  {0,     0,    {false,  do_enter_default_mount_ns}}},
         {"symlink",                 {2,     2,    {true,   do_symlink}}},
         {"sysclktz",                {1,     1,    {false,  do_sysclktz}}},
         {"trigger",                 {1,     1,    {false,  do_trigger}}},
-        {"verity_load_state",       {0,     0,    {false,  do_verity_load_state}}},
         {"verity_update_state",     {0,     0,    {false,  do_verity_update_state}}},
         {"wait",                    {1,     2,    {true,   do_wait}}},
         {"wait_for_prop",           {2,     2,    {false,  do_wait_for_prop}}},
diff --git a/init/builtins.h b/init/builtins.h
index 814b2d5..f0ff1eb 100644
--- a/init/builtins.h
+++ b/init/builtins.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_BUILTINS_H
-#define _INIT_BUILTINS_H
+#pragma once
 
 #include <functional>
 #include <map>
@@ -29,18 +28,18 @@
 namespace android {
 namespace init {
 
-using BuiltinFunction = std::function<Result<Success>(const BuiltinArguments&)>;
+using BuiltinFunction = std::function<Result<void>(const BuiltinArguments&)>;
 
-using KeywordFunctionMap = KeywordMap<std::pair<bool, BuiltinFunction>>;
-class BuiltinFunctionMap : public KeywordFunctionMap {
-  public:
-    BuiltinFunctionMap() {}
-
-  private:
-    const Map& map() const override;
+struct BuiltinFunctionMapValue {
+    bool run_in_subcontext;
+    BuiltinFunction function;
 };
 
+using BuiltinFunctionMap = KeywordMap<BuiltinFunctionMapValue>;
+
+const BuiltinFunctionMap& GetBuiltinFunctionMap();
+
+extern std::vector<std::string> late_import_paths;
+
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/check_builtins.cpp b/init/check_builtins.cpp
new file mode 100644
index 0000000..481fa31
--- /dev/null
+++ b/init/check_builtins.cpp
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Note that these check functions cannot check expanded arguments from properties, since they will
+// not know what those properties would be at runtime.  They will be passed an empty string in the
+// situation that the input line had a property expansion without a default value, since an empty
+// string is otherwise an impossible value.  They should therefore disregard checking empty
+// arguments.
+
+#include "check_builtins.h"
+
+#include <sys/time.h>
+
+#include <android-base/logging.h>
+#include <android-base/parsedouble.h>
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+
+#include "builtin_arguments.h"
+#include "host_init_verifier.h"
+#include "interface_utils.h"
+#include "property_type.h"
+#include "rlimit_parser.h"
+#include "service.h"
+#include "util.h"
+
+using android::base::ParseInt;
+using android::base::StartsWith;
+
+#define ReturnIfAnyArgsEmpty()     \
+    for (const auto& arg : args) { \
+        if (arg.empty()) {         \
+            return {};             \
+        }                          \
+    }
+
+namespace android {
+namespace init {
+
+Result<void> check_chown(const BuiltinArguments& args) {
+    if (!args[1].empty()) {
+        auto uid = DecodeUid(args[1]);
+        if (!uid.ok()) {
+            return Error() << "Unable to decode UID for '" << args[1] << "': " << uid.error();
+        }
+    }
+
+    // GID is optional and pushes the index of path out by one if specified.
+    if (args.size() == 4 && !args[2].empty()) {
+        auto gid = DecodeUid(args[2]);
+        if (!gid.ok()) {
+            return Error() << "Unable to decode GID for '" << args[2] << "': " << gid.error();
+        }
+    }
+
+    return {};
+}
+
+Result<void> check_exec(const BuiltinArguments& args) {
+    ReturnIfAnyArgsEmpty();
+
+    auto result = Service::MakeTemporaryOneshotService(args.args);
+    if (!result.ok()) {
+        return result.error();
+    }
+
+    return {};
+}
+
+Result<void> check_exec_background(const BuiltinArguments& args) {
+    return check_exec(std::move(args));
+}
+
+Result<void> check_exec_reboot_on_failure(const BuiltinArguments& args) {
+    BuiltinArguments remaining_args(args.context);
+
+    remaining_args.args = std::vector<std::string>(args.begin() + 1, args.end());
+    remaining_args.args[0] = args[0];
+
+    return check_exec(remaining_args);
+}
+
+Result<void> check_interface_restart(const BuiltinArguments& args) {
+    if (auto result = IsKnownInterface(args[1]); !result.ok()) {
+        return result.error();
+    }
+    return {};
+}
+
+Result<void> check_interface_start(const BuiltinArguments& args) {
+    return check_interface_restart(std::move(args));
+}
+
+Result<void> check_interface_stop(const BuiltinArguments& args) {
+    return check_interface_restart(std::move(args));
+}
+
+Result<void> check_load_system_props(const BuiltinArguments& args) {
+    return Error() << "'load_system_props' is deprecated";
+}
+
+Result<void> check_loglevel(const BuiltinArguments& args) {
+    ReturnIfAnyArgsEmpty();
+
+    int log_level = -1;
+    ParseInt(args[1], &log_level);
+    if (log_level < 0 || log_level > 7) {
+        return Error() << "loglevel must be in the range of 0-7";
+    }
+    return {};
+}
+
+Result<void> check_mount_all(const BuiltinArguments& args) {
+    auto options = ParseMountAll(args.args);
+    if (!options.ok()) {
+        return options.error();
+    }
+    return {};
+}
+
+Result<void> check_mkdir(const BuiltinArguments& args) {
+    auto options = ParseMkdir(args.args);
+    if (!options.ok()) {
+        return options.error();
+    }
+    return {};
+}
+
+Result<void> check_restorecon(const BuiltinArguments& args) {
+    ReturnIfAnyArgsEmpty();
+
+    auto restorecon_info = ParseRestorecon(args.args);
+    if (!restorecon_info.ok()) {
+        return restorecon_info.error();
+    }
+
+    return {};
+}
+
+Result<void> check_restorecon_recursive(const BuiltinArguments& args) {
+    return check_restorecon(std::move(args));
+}
+
+Result<void> check_setprop(const BuiltinArguments& args) {
+    const std::string& name = args[1];
+    if (name.empty()) {
+        return {};
+    }
+    const std::string& value = args[2];
+
+    if (!IsLegalPropertyName(name)) {
+        return Error() << "'" << name << "' is not a legal property name";
+    }
+
+    if (!value.empty()) {
+        if (auto result = IsLegalPropertyValue(name, value); !result.ok()) {
+            return result.error();
+        }
+    }
+
+    if (StartsWith(name, "ctl.")) {
+        return Error()
+               << "Do not set ctl. properties from init; call the Service functions directly";
+    }
+
+    static constexpr const char kRestoreconProperty[] = "selinux.restorecon_recursive";
+    if (name == kRestoreconProperty) {
+        return Error() << "Do not set '" << kRestoreconProperty
+                       << "' from init; use the restorecon builtin directly";
+    }
+
+    const char* target_context = nullptr;
+    const char* type = nullptr;
+    property_info_area->GetPropertyInfo(name.c_str(), &target_context, &type);
+
+    if (!CheckType(type, value)) {
+        return Error() << "Property type check failed, value doesn't match expected type '"
+                       << (type ?: "(null)") << "'";
+    }
+
+    return {};
+}
+
+Result<void> check_setrlimit(const BuiltinArguments& args) {
+    ReturnIfAnyArgsEmpty();
+
+    auto rlimit = ParseRlimit(args.args);
+    if (!rlimit.ok()) return rlimit.error();
+    return {};
+}
+
+Result<void> check_swapon_all(const BuiltinArguments& args) {
+    auto options = ParseSwaponAll(args.args);
+    if (!options.ok()) {
+        return options.error();
+    }
+    return {};
+}
+
+Result<void> check_sysclktz(const BuiltinArguments& args) {
+    ReturnIfAnyArgsEmpty();
+
+    struct timezone tz = {};
+    if (!android::base::ParseInt(args[1], &tz.tz_minuteswest)) {
+        return Error() << "Unable to parse mins_west_of_gmt";
+    }
+    return {};
+}
+
+Result<void> check_umount_all(const BuiltinArguments& args) {
+    auto options = ParseUmountAll(args.args);
+    if (!options.ok()) {
+        return options.error();
+    }
+    return {};
+}
+
+Result<void> check_wait(const BuiltinArguments& args) {
+    if (args.size() == 3 && !args[2].empty()) {
+        double timeout_double;
+        if (!android::base::ParseDouble(args[2], &timeout_double, 0)) {
+            return Error() << "failed to parse timeout";
+        }
+    }
+    return {};
+}
+
+Result<void> check_wait_for_prop(const BuiltinArguments& args) {
+    return check_setprop(std::move(args));
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/check_builtins.h b/init/check_builtins.h
new file mode 100644
index 0000000..dc1b752
--- /dev/null
+++ b/init/check_builtins.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "builtin_arguments.h"
+#include "result.h"
+
+namespace android {
+namespace init {
+
+Result<void> check_chown(const BuiltinArguments& args);
+Result<void> check_exec(const BuiltinArguments& args);
+Result<void> check_exec_background(const BuiltinArguments& args);
+Result<void> check_exec_reboot_on_failure(const BuiltinArguments& args);
+Result<void> check_interface_restart(const BuiltinArguments& args);
+Result<void> check_interface_start(const BuiltinArguments& args);
+Result<void> check_interface_stop(const BuiltinArguments& args);
+Result<void> check_load_system_props(const BuiltinArguments& args);
+Result<void> check_loglevel(const BuiltinArguments& args);
+Result<void> check_mkdir(const BuiltinArguments& args);
+Result<void> check_mount_all(const BuiltinArguments& args);
+Result<void> check_restorecon(const BuiltinArguments& args);
+Result<void> check_restorecon_recursive(const BuiltinArguments& args);
+Result<void> check_setprop(const BuiltinArguments& args);
+Result<void> check_setrlimit(const BuiltinArguments& args);
+Result<void> check_swapon_all(const BuiltinArguments& args);
+Result<void> check_sysclktz(const BuiltinArguments& args);
+Result<void> check_umount_all(const BuiltinArguments& args);
+Result<void> check_wait(const BuiltinArguments& args);
+Result<void> check_wait_for_prop(const BuiltinArguments& args);
+
+}  // namespace init
+}  // namespace android
diff --git a/init/descriptors.cpp b/init/descriptors.cpp
deleted file mode 100644
index 6265687..0000000
--- a/init/descriptors.cpp
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "descriptors.h"
-
-#include <ctype.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-#include <cutils/android_get_control_file.h>
-#include <cutils/sockets.h>
-
-#include "util.h"
-
-namespace android {
-namespace init {
-
-DescriptorInfo::DescriptorInfo(const std::string& name, const std::string& type, uid_t uid,
-                               gid_t gid, int perm, const std::string& context)
-        : name_(name), type_(type), uid_(uid), gid_(gid), perm_(perm), context_(context) {
-}
-
-DescriptorInfo::~DescriptorInfo() {
-}
-
-std::ostream& operator<<(std::ostream& os, const DescriptorInfo& info) {
-  return os << "  descriptors " << info.name_ << " " << info.type_ << " " << std::oct << info.perm_;
-}
-
-bool DescriptorInfo::operator==(const DescriptorInfo& other) const {
-  return name_ == other.name_ && type_ == other.type_ && key() == other.key();
-}
-
-void DescriptorInfo::CreateAndPublish(const std::string& globalContext) const {
-  // Create
-  const std::string& contextStr = context_.empty() ? globalContext : context_;
-  int fd = Create(contextStr);
-  if (fd < 0) return;
-
-  // Publish
-  std::string publishedName = key() + name_;
-  std::for_each(publishedName.begin(), publishedName.end(),
-                [] (char& c) { c = isalnum(c) ? c : '_'; });
-
-  std::string val = std::to_string(fd);
-  setenv(publishedName.c_str(), val.c_str(), 1);
-
-  // make sure we don't close on exec
-  fcntl(fd, F_SETFD, 0);
-}
-
-void DescriptorInfo::Clean() const {
-}
-
-SocketInfo::SocketInfo(const std::string& name, const std::string& type, uid_t uid,
-                       gid_t gid, int perm, const std::string& context)
-        : DescriptorInfo(name, type, uid, gid, perm, context) {
-}
-
-void SocketInfo::Clean() const {
-    std::string path = android::base::StringPrintf("%s/%s", ANDROID_SOCKET_DIR, name().c_str());
-    unlink(path.c_str());
-}
-
-int SocketInfo::Create(const std::string& context) const {
-    auto types = android::base::Split(type(), "+");
-    int flags =
-        ((types[0] == "stream" ? SOCK_STREAM : (types[0] == "dgram" ? SOCK_DGRAM : SOCK_SEQPACKET)));
-    bool passcred = types.size() > 1 && types[1] == "passcred";
-    return CreateSocket(name().c_str(), flags, passcred, perm(), uid(), gid(), context.c_str());
-}
-
-const std::string SocketInfo::key() const {
-  return ANDROID_SOCKET_ENV_PREFIX;
-}
-
-FileInfo::FileInfo(const std::string& name, const std::string& type, uid_t uid,
-                   gid_t gid, int perm, const std::string& context)
-        // defaults OK for uid,..., they are ignored for this class.
-        : DescriptorInfo(name, type, uid, gid, perm, context) {
-}
-
-int FileInfo::Create(const std::string&) const {
-  int flags = (type() == "r") ? O_RDONLY :
-              (type() == "w") ? O_WRONLY :
-                                O_RDWR;
-
-  // Make sure we do not block on open (eg: devices can chose to block on
-  // carrier detect).  Our intention is never to delay launch of a service
-  // for such a condition.  The service can perform its own blocking on
-  // carrier detect.
-  android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(name().c_str(),
-                                                      flags | O_NONBLOCK)));
-
-  if (fd < 0) {
-    PLOG(ERROR) << "Failed to open file '" << name().c_str() << "'";
-    return -1;
-  }
-
-  // Fixup as we set O_NONBLOCK for open, the intent for fd is to block reads.
-  fcntl(fd, F_SETFL, flags);
-
-  LOG(INFO) << "Opened file '" << name().c_str() << "'"
-            << ", flags " << std::oct << flags << std::dec;
-
-  return fd.release();
-}
-
-const std::string FileInfo::key() const {
-  return ANDROID_FILE_ENV_PREFIX;
-}
-
-}  // namespace init
-}  // namespace android
diff --git a/init/descriptors.h b/init/descriptors.h
deleted file mode 100644
index 3bdddfe..0000000
--- a/init/descriptors.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-
-#ifndef _INIT_DESCRIPTORS_H
-#define _INIT_DESCRIPTORS_H
-
-#include <sys/types.h>
-
-#include <string>
-
-namespace android {
-namespace init {
-
-class DescriptorInfo {
- public:
-  DescriptorInfo(const std::string& name, const std::string& type, uid_t uid,
-                 gid_t gid, int perm, const std::string& context);
-  virtual ~DescriptorInfo();
-
-  friend std::ostream& operator<<(std::ostream& os, const class DescriptorInfo& info);
-  bool operator==(const DescriptorInfo& other) const;
-
-  void CreateAndPublish(const std::string& globalContext) const;
-  virtual void Clean() const;
-
- protected:
-  const std::string& name() const { return name_; }
-  const std::string& type() const { return type_; }
-  uid_t uid() const { return uid_; }
-  gid_t gid() const { return gid_; }
-  int perm() const { return perm_; }
-  const std::string& context() const { return context_; }
-
- private:
-  std::string name_;
-  std::string type_;
-  uid_t uid_;
-  gid_t gid_;
-  int perm_;
-  std::string context_;
-
-  virtual int Create(const std::string& globalContext) const = 0;
-  virtual const std::string key() const = 0;
-};
-
-std::ostream& operator<<(std::ostream& os, const DescriptorInfo& info);
-
-class SocketInfo : public DescriptorInfo {
- public:
-  SocketInfo(const std::string& name, const std::string& type, uid_t uid,
-             gid_t gid, int perm, const std::string& context);
-  void Clean() const override;
- private:
-  virtual int Create(const std::string& context) const override;
-  virtual const std::string key() const override;
-};
-
-class FileInfo : public DescriptorInfo {
- public:
-  FileInfo(const std::string& name, const std::string& type, uid_t uid,
-           gid_t gid, int perm, const std::string& context);
- private:
-  virtual int Create(const std::string& context) const override;
-  virtual const std::string key() const override;
-};
-
-}  // namespace init
-}  // namespace android
-
-#endif
diff --git a/init/devices.cpp b/init/devices.cpp
index 159c75e..9fbec64 100644
--- a/init/devices.cpp
+++ b/init/devices.cpp
@@ -22,7 +22,6 @@
 #include <unistd.h>
 
 #include <chrono>
-#include <map>
 #include <memory>
 #include <string>
 #include <thread>
@@ -36,13 +35,9 @@
 #include <selinux/android.h>
 #include <selinux/selinux.h>
 
-#include "selinux.h"
+#include "selabel.h"
 #include "util.h"
 
-#ifdef _INIT_INIT_H
-#error "Do not include init.h in files used by ueventd; it will expose init's globals"
-#endif
-
 using namespace std::chrono_literals;
 
 using android::base::Basename;
@@ -115,24 +110,16 @@
 // the supplied buffer with the dm module's instantiated name.
 // If it doesn't start with a virtual block device, or there is some
 // error, return false.
-static bool FindDmDevicePartition(const std::string& path, std::string* result) {
-    result->clear();
+static bool FindDmDevice(const std::string& path, std::string* name, std::string* uuid) {
     if (!StartsWith(path, "/devices/virtual/block/dm-")) return false;
-    if (getpid() == 1) return false;  // first_stage_init has no sepolicy needs
 
-    static std::map<std::string, std::string> cache;
-    // wait_for_file will not work, the content is also delayed ...
-    for (android::base::Timer t; t.duration() < 200ms; std::this_thread::sleep_for(10ms)) {
-        if (ReadFileToString("/sys" + path + "/dm/name", result) && !result->empty()) {
-            // Got it, set cache with result, when node arrives
-            cache[path] = *result = Trim(*result);
-            return true;
-        }
+    if (!ReadFileToString("/sys" + path + "/dm/name", name)) {
+        return false;
     }
-    auto it = cache.find(path);
-    if ((it == cache.end()) || (it->second.empty())) return false;
-    // Return cached results, when node goes away
-    *result = it->second;
+    ReadFileToString("/sys" + path + "/dm/uuid", uuid);
+
+    *name = android::base::Trim(*name);
+    *uuid = android::base::Trim(*uuid);
     return true;
 }
 
@@ -329,6 +316,7 @@
     std::string device;
     std::string type;
     std::string partition;
+    std::string uuid;
 
     if (FindPlatformDevice(uevent.path, &device)) {
         // Skip /devices/platform or /devices/ if present
@@ -346,8 +334,12 @@
         type = "pci";
     } else if (FindVbdDevicePrefix(uevent.path, &device)) {
         type = "vbd";
-    } else if (FindDmDevicePartition(uevent.path, &partition)) {
-        return {"/dev/block/mapper/" + partition};
+    } else if (FindDmDevice(uevent.path, &partition, &uuid)) {
+        std::vector<std::string> symlinks = {"/dev/block/mapper/" + partition};
+        if (!uuid.empty()) {
+            symlinks.emplace_back("/dev/block/mapper/by-uuid/" + uuid);
+        }
+        return symlinks;
     } else {
         return {};
     }
@@ -383,10 +375,41 @@
     return links;
 }
 
+static void RemoveDeviceMapperLinks(const std::string& devpath) {
+    std::vector<std::string> dirs = {
+            "/dev/block/mapper",
+            "/dev/block/mapper/by-uuid",
+    };
+    for (const auto& dir : dirs) {
+        if (access(dir.c_str(), F_OK) != 0) continue;
+
+        std::unique_ptr<DIR, decltype(&closedir)> dh(opendir(dir.c_str()), closedir);
+        if (!dh) {
+            PLOG(ERROR) << "Failed to open directory " << dir;
+            continue;
+        }
+
+        struct dirent* dp;
+        std::string link_path;
+        while ((dp = readdir(dh.get())) != nullptr) {
+            if (dp->d_type != DT_LNK) continue;
+
+            auto path = dir + "/" + dp->d_name;
+            if (Readlink(path, &link_path) && link_path == devpath) {
+                unlink(path.c_str());
+            }
+        }
+    }
+}
+
 void DeviceHandler::HandleDevice(const std::string& action, const std::string& devpath, bool block,
                                  int major, int minor, const std::vector<std::string>& links) const {
     if (action == "add") {
         MakeDevice(devpath, block, major, minor, links);
+    }
+
+    // We don't have full device-mapper information until a change event is fired.
+    if (action == "add" || (action == "change" && StartsWith(devpath, "/dev/block/dm-"))) {
         for (const auto& link : links) {
             if (!mkdir_recursive(Dirname(link), 0755)) {
                 PLOG(ERROR) << "Failed to create directory " << Dirname(link);
@@ -405,6 +428,9 @@
     }
 
     if (action == "remove") {
+        if (StartsWith(devpath, "/dev/block/dm-")) {
+            RemoveDeviceMapperLinks(devpath);
+        }
         for (const auto& link : links) {
             std::string link_path;
             if (Readlink(link, &link_path) && link_path == devpath) {
@@ -415,6 +441,23 @@
     }
 }
 
+void DeviceHandler::HandleAshmemUevent(const Uevent& uevent) {
+    if (uevent.device_name == "ashmem") {
+        static const std::string boot_id_path = "/proc/sys/kernel/random/boot_id";
+        std::string boot_id;
+        if (!ReadFileToString(boot_id_path, &boot_id)) {
+            PLOG(ERROR) << "Cannot duplicate ashmem device node. Failed to read " << boot_id_path;
+            return;
+        };
+        boot_id = Trim(boot_id);
+
+        Uevent dup_ashmem_uevent = uevent;
+        dup_ashmem_uevent.device_name += boot_id;
+        dup_ashmem_uevent.path += boot_id;
+        HandleUevent(dup_ashmem_uevent);
+    }
+}
+
 void DeviceHandler::HandleUevent(const Uevent& uevent) {
     if (uevent.action == "add" || uevent.action == "change" || uevent.action == "online") {
         FixupSysPermissions(uevent.path, uevent.subsystem);
@@ -459,6 +502,10 @@
     mkdir_recursive(Dirname(devpath), 0755);
 
     HandleDevice(uevent.action, devpath, block, uevent.major, uevent.minor, links);
+
+    // Duplicate /dev/ashmem device and name it /dev/ashmem<boot_id>.
+    // TODO(b/111903542): remove once all users of /dev/ashmem are migrated to libcutils API.
+    HandleAshmemUevent(uevent);
 }
 
 void DeviceHandler::ColdbootDone() {
diff --git a/init/devices.h b/init/devices.h
index 9d39eaa..05d64da 100644
--- a/init/devices.h
+++ b/init/devices.h
@@ -84,9 +84,9 @@
     };
 
     Subsystem() {}
-    Subsystem(const std::string& name) : name_(name) {}
-    Subsystem(const std::string& name, DevnameSource source, const std::string& dir_name)
-        : name_(name), devname_source_(source), dir_name_(dir_name) {}
+    Subsystem(std::string name) : name_(std::move(name)) {}
+    Subsystem(std::string name, DevnameSource source, std::string dir_name)
+        : name_(std::move(name)), devname_source_(source), dir_name_(std::move(dir_name)) {}
 
     // Returns the full path for a uevent of a device that is a member of this subsystem,
     // according to the rules parsed from ueventd.rc
@@ -130,6 +130,7 @@
     void HandleDevice(const std::string& action, const std::string& devpath, bool block, int major,
                       int minor, const std::vector<std::string>& links) const;
     void FixupSysPermissions(const std::string& upath, const std::string& subsystem) const;
+    void HandleAshmemUevent(const Uevent& uevent);
 
     std::vector<Permissions> dev_permissions_;
     std::vector<SysfsPermissions> sysfs_permissions_;
diff --git a/init/devices_test.cpp b/init/devices_test.cpp
index 3e7c1a8..c408bc1 100644
--- a/init/devices_test.cpp
+++ b/init/devices_test.cpp
@@ -30,7 +30,7 @@
 class DeviceHandlerTester {
   public:
     void TestGetSymlinks(const std::string& platform_device, const Uevent& uevent,
-                         const std::vector<std::string> expected_links) {
+                         const std::vector<std::string>& expected_links) {
         TemporaryDir fake_sys_root;
         device_handler_.sysfs_mount_point_ = fake_sys_root.path;
 
diff --git a/init/epoll.cpp b/init/epoll.cpp
index 94dd553..74d8aac 100644
--- a/init/epoll.cpp
+++ b/init/epoll.cpp
@@ -28,21 +28,22 @@
 
 Epoll::Epoll() {}
 
-Result<Success> Epoll::Open() {
-    if (epoll_fd_ >= 0) return Success();
+Result<void> Epoll::Open() {
+    if (epoll_fd_ >= 0) return {};
     epoll_fd_.reset(epoll_create1(EPOLL_CLOEXEC));
 
     if (epoll_fd_ == -1) {
         return ErrnoError() << "epoll_create1 failed";
     }
-    return Success();
+    return {};
 }
 
-Result<Success> Epoll::RegisterHandler(int fd, std::function<void()> handler, uint32_t events) {
+Result<void> Epoll::RegisterHandler(int fd, Handler handler, uint32_t events) {
     if (!events) {
         return Error() << "Must specify events";
     }
-    auto [it, inserted] = epoll_handlers_.emplace(fd, std::move(handler));
+    auto sp = std::make_shared<decltype(handler)>(std::move(handler));
+    auto [it, inserted] = epoll_handlers_.emplace(fd, std::move(sp));
     if (!inserted) {
         return Error() << "Cannot specify two epoll handlers for a given FD";
     }
@@ -52,36 +53,42 @@
     // pointer to the std::function in the map directly for epoll_ctl.
     ev.data.ptr = reinterpret_cast<void*>(&it->second);
     if (epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, fd, &ev) == -1) {
-        Result<Success> result = ErrnoError() << "epoll_ctl failed to add fd";
+        Result<void> result = ErrnoError() << "epoll_ctl failed to add fd";
         epoll_handlers_.erase(fd);
         return result;
     }
-    return Success();
+    return {};
 }
 
-Result<Success> Epoll::UnregisterHandler(int fd) {
+Result<void> Epoll::UnregisterHandler(int fd) {
     if (epoll_ctl(epoll_fd_, EPOLL_CTL_DEL, fd, nullptr) == -1) {
         return ErrnoError() << "epoll_ctl failed to remove fd";
     }
     if (epoll_handlers_.erase(fd) != 1) {
         return Error() << "Attempting to remove epoll handler for FD without an existing handler";
     }
-    return Success();
+    return {};
 }
 
-Result<Success> Epoll::Wait(std::optional<std::chrono::milliseconds> timeout) {
+Result<std::vector<std::shared_ptr<Epoll::Handler>>> Epoll::Wait(
+        std::optional<std::chrono::milliseconds> timeout) {
     int timeout_ms = -1;
     if (timeout && timeout->count() < INT_MAX) {
         timeout_ms = timeout->count();
     }
-    epoll_event ev;
-    auto nr = TEMP_FAILURE_RETRY(epoll_wait(epoll_fd_, &ev, 1, timeout_ms));
-    if (nr == -1) {
+    const auto max_events = epoll_handlers_.size();
+    epoll_event ev[max_events];
+    auto num_events = TEMP_FAILURE_RETRY(epoll_wait(epoll_fd_, ev, max_events, timeout_ms));
+    if (num_events == -1) {
         return ErrnoError() << "epoll_wait failed";
-    } else if (nr == 1) {
-        std::invoke(*reinterpret_cast<std::function<void()>*>(ev.data.ptr));
     }
-    return Success();
+    std::vector<std::shared_ptr<Handler>> pending_functions;
+    for (int i = 0; i < num_events; ++i) {
+        auto sp = *reinterpret_cast<std::shared_ptr<Handler>*>(ev[i].data.ptr);
+        pending_functions.emplace_back(std::move(sp));
+    }
+
+    return pending_functions;
 }
 
 }  // namespace init
diff --git a/init/epoll.h b/init/epoll.h
index 9789bef..0df5289 100644
--- a/init/epoll.h
+++ b/init/epoll.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_EPOLL_H
-#define _INIT_EPOLL_H
+#pragma once
 
 #include <stdint.h>
 #include <sys/epoll.h>
@@ -23,7 +22,9 @@
 #include <chrono>
 #include <functional>
 #include <map>
+#include <memory>
 #include <optional>
+#include <vector>
 
 #include <android-base/unique_fd.h>
 
@@ -36,18 +37,18 @@
   public:
     Epoll();
 
-    Result<Success> Open();
-    Result<Success> RegisterHandler(int fd, std::function<void()> handler,
-                                    uint32_t events = EPOLLIN);
-    Result<Success> UnregisterHandler(int fd);
-    Result<Success> Wait(std::optional<std::chrono::milliseconds> timeout);
+    typedef std::function<void()> Handler;
+
+    Result<void> Open();
+    Result<void> RegisterHandler(int fd, Handler handler, uint32_t events = EPOLLIN);
+    Result<void> UnregisterHandler(int fd);
+    Result<std::vector<std::shared_ptr<Handler>>> Wait(
+            std::optional<std::chrono::milliseconds> timeout);
 
   private:
     android::base::unique_fd epoll_fd_;
-    std::map<int, std::function<void()>> epoll_handlers_;
+    std::map<int, std::shared_ptr<Handler>> epoll_handlers_;
 };
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/epoll_test.cpp b/init/epoll_test.cpp
new file mode 100644
index 0000000..9236cd5
--- /dev/null
+++ b/init/epoll_test.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "epoll.h"
+
+#include <sys/unistd.h>
+
+#include <unordered_set>
+
+#include <android-base/file.h>
+#include <gtest/gtest.h>
+
+namespace android {
+namespace init {
+
+std::unordered_set<void*> sValidObjects;
+
+class CatchDtor final {
+  public:
+    CatchDtor() { sValidObjects.emplace(this); }
+    CatchDtor(const CatchDtor&) { sValidObjects.emplace(this); }
+    ~CatchDtor() {
+        auto iter = sValidObjects.find(this);
+        if (iter != sValidObjects.end()) {
+            sValidObjects.erase(iter);
+        }
+    }
+};
+
+TEST(epoll, UnregisterHandler) {
+    Epoll epoll;
+    ASSERT_RESULT_OK(epoll.Open());
+
+    int fds[2];
+    ASSERT_EQ(pipe(fds), 0);
+
+    CatchDtor catch_dtor;
+    bool handler_invoked;
+    auto handler = [&, catch_dtor]() -> void {
+        auto result = epoll.UnregisterHandler(fds[0]);
+        ASSERT_EQ(result.ok(), !handler_invoked);
+        handler_invoked = true;
+        ASSERT_NE(sValidObjects.find((void*)&catch_dtor), sValidObjects.end());
+    };
+
+    epoll.RegisterHandler(fds[0], std::move(handler));
+
+    uint8_t byte = 0xee;
+    ASSERT_TRUE(android::base::WriteFully(fds[1], &byte, sizeof(byte)));
+
+    auto results = epoll.Wait({});
+    ASSERT_RESULT_OK(results);
+    ASSERT_EQ(results->size(), size_t(1));
+
+    for (const auto& function : *results) {
+        (*function)();
+        (*function)();
+    }
+    ASSERT_TRUE(handler_invoked);
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/firmware_handler.cpp b/init/firmware_handler.cpp
index 740e82c..dff7b69 100644
--- a/init/firmware_handler.cpp
+++ b/init/firmware_handler.cpp
@@ -17,6 +17,10 @@
 #include "firmware_handler.h"
 
 #include <fcntl.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/sendfile.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -26,25 +30,29 @@
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 
+using android::base::ReadFdToString;
+using android::base::Socketpair;
+using android::base::Split;
 using android::base::Timer;
+using android::base::Trim;
 using android::base::unique_fd;
 using android::base::WriteFully;
 
 namespace android {
 namespace init {
 
-static void LoadFirmware(const Uevent& uevent, const std::string& root, int fw_fd, size_t fw_size,
-                         int loading_fd, int data_fd) {
+static void LoadFirmware(const std::string& firmware, const std::string& root, int fw_fd,
+                         size_t fw_size, int loading_fd, int data_fd) {
     // Start transfer.
     WriteFully(loading_fd, "1", 1);
 
     // Copy the firmware.
     int rc = sendfile(data_fd, fw_fd, nullptr, fw_size);
     if (rc == -1) {
-        PLOG(ERROR) << "firmware: sendfile failed { '" << root << "', '" << uevent.firmware
-                    << "' }";
+        PLOG(ERROR) << "firmware: sendfile failed { '" << root << "', '" << firmware << "' }";
     }
 
     // Tell the firmware whether to abort or commit.
@@ -56,39 +64,165 @@
     return access("/dev/.booting", F_OK) == 0;
 }
 
-FirmwareHandler::FirmwareHandler(std::vector<std::string> firmware_directories)
-    : firmware_directories_(std::move(firmware_directories)) {}
+FirmwareHandler::FirmwareHandler(std::vector<std::string> firmware_directories,
+                                 std::vector<ExternalFirmwareHandler> external_firmware_handlers)
+    : firmware_directories_(std::move(firmware_directories)),
+      external_firmware_handlers_(std::move(external_firmware_handlers)) {}
 
-void FirmwareHandler::ProcessFirmwareEvent(const Uevent& uevent) {
-    int booting = IsBooting();
+Result<std::string> FirmwareHandler::RunExternalHandler(const std::string& handler, uid_t uid,
+                                                        const Uevent& uevent) const {
+    unique_fd child_stdout;
+    unique_fd parent_stdout;
+    if (!Socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, &child_stdout, &parent_stdout)) {
+        return ErrnoError() << "Socketpair() for stdout failed";
+    }
 
+    unique_fd child_stderr;
+    unique_fd parent_stderr;
+    if (!Socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, &child_stderr, &parent_stderr)) {
+        return ErrnoError() << "Socketpair() for stderr failed";
+    }
+
+    signal(SIGCHLD, SIG_DFL);
+
+    auto pid = fork();
+    if (pid < 0) {
+        return ErrnoError() << "fork() failed";
+    }
+
+    if (pid == 0) {
+        setenv("FIRMWARE", uevent.firmware.c_str(), 1);
+        setenv("DEVPATH", uevent.path.c_str(), 1);
+        parent_stdout.reset();
+        parent_stderr.reset();
+        close(STDOUT_FILENO);
+        close(STDERR_FILENO);
+        dup2(child_stdout.get(), STDOUT_FILENO);
+        dup2(child_stderr.get(), STDERR_FILENO);
+
+        auto args = Split(handler, " ");
+        std::vector<char*> c_args;
+        for (auto& arg : args) {
+            c_args.emplace_back(arg.data());
+        }
+        c_args.emplace_back(nullptr);
+
+        if (setuid(uid) != 0) {
+            fprintf(stderr, "setuid() failed: %s", strerror(errno));
+            _exit(EXIT_FAILURE);
+        }
+
+        execv(c_args[0], c_args.data());
+        fprintf(stderr, "exec() failed: %s", strerror(errno));
+        _exit(EXIT_FAILURE);
+    }
+
+    child_stdout.reset();
+    child_stderr.reset();
+
+    int status;
+    pid_t waited_pid = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0));
+    if (waited_pid == -1) {
+        return ErrnoError() << "waitpid() failed";
+    }
+
+    std::string stdout_content;
+    if (!ReadFdToString(parent_stdout.get(), &stdout_content)) {
+        return ErrnoError() << "ReadFdToString() for stdout failed";
+    }
+
+    std::string stderr_content;
+    if (ReadFdToString(parent_stderr.get(), &stderr_content)) {
+        auto messages = Split(stderr_content, "\n");
+        for (const auto& message : messages) {
+            if (!message.empty()) {
+                LOG(ERROR) << "External Firmware Handler: " << message;
+            }
+        }
+    } else {
+        LOG(ERROR) << "ReadFdToString() for stderr failed";
+    }
+
+    if (WIFEXITED(status)) {
+        if (WEXITSTATUS(status) == EXIT_SUCCESS) {
+            return Trim(stdout_content);
+        } else {
+            return Error() << "exited with status " << WEXITSTATUS(status);
+        }
+    } else if (WIFSIGNALED(status)) {
+        return Error() << "killed by signal " << WTERMSIG(status);
+    }
+
+    return Error() << "unexpected exit status " << status;
+}
+
+std::string FirmwareHandler::GetFirmwarePath(const Uevent& uevent) const {
+    for (const auto& external_handler : external_firmware_handlers_) {
+        if (external_handler.devpath == uevent.path) {
+            LOG(INFO) << "Launching external firmware handler '" << external_handler.handler_path
+                      << "' for devpath: '" << uevent.path << "' firmware: '" << uevent.firmware
+                      << "'";
+
+            auto result =
+                    RunExternalHandler(external_handler.handler_path, external_handler.uid, uevent);
+            if (!result.ok()) {
+                LOG(ERROR) << "Using default firmware; External firmware handler failed: "
+                           << result.error();
+                return uevent.firmware;
+            }
+            if (result->find("..") != std::string::npos) {
+                LOG(ERROR) << "Using default firmware; External firmware handler provided an "
+                              "invalid path, '"
+                           << *result << "'";
+                return uevent.firmware;
+            }
+            LOG(INFO) << "Loading firmware '" << *result << "' in place of '" << uevent.firmware
+                      << "'";
+            return *result;
+        }
+    }
     LOG(INFO) << "firmware: loading '" << uevent.firmware << "' for '" << uevent.path << "'";
+    return uevent.firmware;
+}
 
-    std::string root = "/sys" + uevent.path;
+void FirmwareHandler::ProcessFirmwareEvent(const std::string& root,
+                                           const std::string& firmware) const {
     std::string loading = root + "/loading";
     std::string data = root + "/data";
 
     unique_fd loading_fd(open(loading.c_str(), O_WRONLY | O_CLOEXEC));
     if (loading_fd == -1) {
-        PLOG(ERROR) << "couldn't open firmware loading fd for " << uevent.firmware;
+        PLOG(ERROR) << "couldn't open firmware loading fd for " << firmware;
         return;
     }
 
     unique_fd data_fd(open(data.c_str(), O_WRONLY | O_CLOEXEC));
     if (data_fd == -1) {
-        PLOG(ERROR) << "couldn't open firmware data fd for " << uevent.firmware;
+        PLOG(ERROR) << "couldn't open firmware data fd for " << firmware;
         return;
     }
 
+    std::vector<std::string> attempted_paths_and_errors;
+
+    int booting = IsBooting();
 try_loading_again:
+    attempted_paths_and_errors.clear();
     for (const auto& firmware_directory : firmware_directories_) {
-        std::string file = firmware_directory + uevent.firmware;
+        std::string file = firmware_directory + firmware;
         unique_fd fw_fd(open(file.c_str(), O_RDONLY | O_CLOEXEC));
-        struct stat sb;
-        if (fw_fd != -1 && fstat(fw_fd, &sb) != -1) {
-            LoadFirmware(uevent, root, fw_fd, sb.st_size, loading_fd, data_fd);
-            return;
+        if (fw_fd == -1) {
+            attempted_paths_and_errors.emplace_back("firmware: attempted " + file +
+                                                    ", open failed: " + strerror(errno));
+            continue;
         }
+        struct stat sb;
+        if (fstat(fw_fd, &sb) == -1) {
+            attempted_paths_and_errors.emplace_back("firmware: attempted " + file +
+                                                    ", fstat failed: " + strerror(errno));
+            continue;
+        }
+        LoadFirmware(firmware, root, fw_fd, sb.st_size, loading_fd, data_fd);
+        return;
     }
 
     if (booting) {
@@ -99,7 +233,10 @@
         goto try_loading_again;
     }
 
-    LOG(ERROR) << "firmware: could not find firmware for " << uevent.firmware;
+    LOG(ERROR) << "firmware: could not find firmware for " << firmware;
+    for (const auto& message : attempted_paths_and_errors) {
+        LOG(ERROR) << message;
+    }
 
     // Write "-1" as our response to the kernel's firmware request, since we have nothing for it.
     write(loading_fd, "-1", 2);
@@ -115,7 +252,8 @@
     }
     if (pid == 0) {
         Timer t;
-        ProcessFirmwareEvent(uevent);
+        auto firmware = GetFirmwarePath(uevent);
+        ProcessFirmwareEvent("/sys" + uevent.path, firmware);
         LOG(INFO) << "loading " << uevent.path << " took " << t;
         _exit(EXIT_SUCCESS);
     }
diff --git a/init/firmware_handler.h b/init/firmware_handler.h
index 3996096..b4138f1 100644
--- a/init/firmware_handler.h
+++ b/init/firmware_handler.h
@@ -14,32 +14,48 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_FIRMWARE_HANDLER_H
-#define _INIT_FIRMWARE_HANDLER_H
+#pragma once
+
+#include <pwd.h>
 
 #include <string>
 #include <vector>
 
+#include "result.h"
 #include "uevent.h"
 #include "uevent_handler.h"
 
 namespace android {
 namespace init {
 
+struct ExternalFirmwareHandler {
+    ExternalFirmwareHandler(std::string devpath, uid_t uid, std::string handler_path)
+        : devpath(std::move(devpath)), uid(uid), handler_path(std::move(handler_path)) {}
+    std::string devpath;
+    uid_t uid;
+    std::string handler_path;
+};
+
 class FirmwareHandler : public UeventHandler {
   public:
-    explicit FirmwareHandler(std::vector<std::string> firmware_directories);
+    FirmwareHandler(std::vector<std::string> firmware_directories,
+                    std::vector<ExternalFirmwareHandler> external_firmware_handlers);
     virtual ~FirmwareHandler() = default;
 
     void HandleUevent(const Uevent& uevent) override;
 
   private:
-    void ProcessFirmwareEvent(const Uevent& uevent);
+    friend void FirmwareTestWithExternalHandler(const std::string& test_name,
+                                                bool expect_new_firmware);
+
+    Result<std::string> RunExternalHandler(const std::string& handler, uid_t uid,
+                                           const Uevent& uevent) const;
+    std::string GetFirmwarePath(const Uevent& uevent) const;
+    void ProcessFirmwareEvent(const std::string& root, const std::string& firmware) const;
 
     std::vector<std::string> firmware_directories_;
+    std::vector<ExternalFirmwareHandler> external_firmware_handlers_;
 };
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/firmware_handler_test.cpp b/init/firmware_handler_test.cpp
new file mode 100644
index 0000000..7bb603c
--- /dev/null
+++ b/init/firmware_handler_test.cpp
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "firmware_handler.h"
+
+#include <stdlib.h>
+#include <iostream>
+
+#include <android-base/file.h>
+#include <gtest/gtest.h>
+
+#include "uevent.h"
+
+using android::base::GetExecutablePath;
+using namespace std::literals;
+
+namespace android {
+namespace init {
+
+void FirmwareTestWithExternalHandler(const std::string& test_name, bool expect_new_firmware) {
+    auto test_path = GetExecutablePath() + " firmware " + test_name;
+    auto external_firmware_handler = ExternalFirmwareHandler(
+            "/devices/led/firmware/test_firmware001.bin", getuid(), test_path);
+
+    auto firmware_handler = FirmwareHandler({"/test"}, {external_firmware_handler});
+
+    auto uevent = Uevent{
+            .path = "/devices/led/firmware/test_firmware001.bin",
+            .firmware = "test_firmware001.bin",
+    };
+
+    if (expect_new_firmware) {
+        EXPECT_EQ("other_firmware001.bin", firmware_handler.GetFirmwarePath(uevent));
+    } else {
+        EXPECT_EQ("test_firmware001.bin", firmware_handler.GetFirmwarePath(uevent));
+    }
+
+    // Always test the base case that the handler isn't invoked if the devpath doesn't match.
+    auto uevent_different_path = Uevent{
+            .path = "/devices/led/not/mine",
+            .firmware = "test_firmware001.bin",
+    };
+    EXPECT_EQ("test_firmware001.bin", firmware_handler.GetFirmwarePath(uevent_different_path));
+}
+
+TEST(firmware_handler, HandleChange) {
+    FirmwareTestWithExternalHandler("HandleChange", true);
+}
+
+int HandleChange(int argc, char** argv) {
+    // Assert that the environment is set up correctly.
+    if (getenv("DEVPATH") != "/devices/led/firmware/test_firmware001.bin"s) {
+        std::cerr << "$DEVPATH not set correctly" << std::endl;
+        return EXIT_FAILURE;
+    }
+    if (getenv("FIRMWARE") != "test_firmware001.bin"s) {
+        std::cerr << "$FIRMWARE not set correctly" << std::endl;
+        return EXIT_FAILURE;
+    }
+    std::cout << "other_firmware001.bin" << std::endl;
+    return 0;
+}
+
+TEST(firmware_handler, HandleAbort) {
+    FirmwareTestWithExternalHandler("HandleAbort", false);
+}
+
+int HandleAbort(int argc, char** argv) {
+    abort();
+    return 0;
+}
+
+TEST(firmware_handler, HandleFailure) {
+    FirmwareTestWithExternalHandler("HandleFailure", false);
+}
+
+int HandleFailure(int argc, char** argv) {
+    std::cerr << "Failed" << std::endl;
+    return EXIT_FAILURE;
+}
+
+TEST(firmware_handler, HandleBadPath) {
+    FirmwareTestWithExternalHandler("HandleBadPath", false);
+}
+
+int HandleBadPath(int argc, char** argv) {
+    std::cout << "../firmware.bin";
+    return 0;
+}
+
+}  // namespace init
+}  // namespace android
+
+// init_test.cpp contains the main entry point for all init tests.
+int FirmwareTestChildMain(int argc, char** argv) {
+    if (argc < 3) {
+        return 1;
+    }
+
+#define RunTest(testname)                           \
+    if (argv[2] == std::string(#testname)) {        \
+        return android::init::testname(argc, argv); \
+    }
+
+    RunTest(HandleChange);
+    RunTest(HandleAbort);
+    RunTest(HandleFailure);
+    RunTest(HandleBadPath);
+
+#undef RunTest
+    return 1;
+}
diff --git a/init/first_stage_console.cpp b/init/first_stage_console.cpp
new file mode 100644
index 0000000..cfa0d99
--- /dev/null
+++ b/init/first_stage_console.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "first_stage_console.h"
+
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <termios.h>
+
+#include <string>
+#include <thread>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/file.h>
+#include <android-base/logging.h>
+
+static void RunScript() {
+    LOG(INFO) << "Attempting to run /first_stage.sh...";
+    pid_t pid = fork();
+    if (pid != 0) {
+        int status;
+        waitpid(pid, &status, 0);
+        LOG(INFO) << "/first_stage.sh exited with status " << status;
+        return;
+    }
+    const char* path = "/system/bin/sh";
+    const char* args[] = {path, "/first_stage.sh", nullptr};
+    int rv = execv(path, const_cast<char**>(args));
+    LOG(ERROR) << "unable to execv /first_stage.sh, returned " << rv << " errno " << errno;
+}
+
+namespace android {
+namespace init {
+
+void StartConsole() {
+    if (mknod("/dev/console", S_IFCHR | 0600, makedev(5, 1))) {
+        PLOG(ERROR) << "unable to create /dev/console";
+        return;
+    }
+    pid_t pid = fork();
+    if (pid != 0) {
+        int status;
+        waitpid(pid, &status, 0);
+        LOG(ERROR) << "console shell exited with status " << status;
+        return;
+    }
+    int fd = -1;
+    int tries = 50; // should timeout after 5s
+    // The device driver for console may not be ready yet so retry for a while in case of failure.
+    while (tries--) {
+        fd = open("/dev/console", O_RDWR);
+        if (fd != -1) {
+            break;
+        }
+        std::this_thread::sleep_for(100ms);
+    }
+    if (fd == -1) {
+        LOG(ERROR) << "Could not open /dev/console, errno = " << errno;
+        _exit(127);
+    }
+    ioctl(fd, TIOCSCTTY, 0);
+    dup2(fd, STDIN_FILENO);
+    dup2(fd, STDOUT_FILENO);
+    dup2(fd, STDERR_FILENO);
+    close(fd);
+
+    RunScript();
+    const char* path = "/system/bin/sh";
+    const char* args[] = {path, nullptr};
+    int rv = execv(path, const_cast<char**>(args));
+    LOG(ERROR) << "unable to execv, returned " << rv << " errno " << errno;
+    _exit(127);
+}
+
+int FirstStageConsole(const std::string& cmdline) {
+    auto pos = cmdline.find("androidboot.first_stage_console=");
+    if (pos != std::string::npos) {
+        int val = 0;
+        if (sscanf(cmdline.c_str() + pos, "androidboot.first_stage_console=%d", &val) != 1) {
+            return FirstStageConsoleParam::DISABLED;
+        }
+        if (val <= FirstStageConsoleParam::MAX_PARAM_VALUE && val >= 0) {
+            return val;
+        }
+    }
+    return FirstStageConsoleParam::DISABLED;
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/first_stage_console.h b/init/first_stage_console.h
new file mode 100644
index 0000000..8f36a7c
--- /dev/null
+++ b/init/first_stage_console.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+namespace android {
+namespace init {
+
+enum FirstStageConsoleParam {
+    DISABLED = 0,
+    CONSOLE_ON_FAILURE = 1,
+    IGNORE_FAILURE = 2,
+    MAX_PARAM_VALUE = IGNORE_FAILURE,
+};
+
+void StartConsole();
+int FirstStageConsole(const std::string& cmdline);
+
+}  // namespace init
+}  // namespace android
diff --git a/init/first_stage_init.cpp b/init/first_stage_init.cpp
index 2b89940..0215576 100644
--- a/init/first_stage_init.cpp
+++ b/init/first_stage_init.cpp
@@ -24,6 +24,7 @@
 #include <sys/stat.h>
 #include <sys/sysmacros.h>
 #include <sys/types.h>
+#include <sys/utsname.h>
 #include <unistd.h>
 
 #include <filesystem>
@@ -33,9 +34,11 @@
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <modprobe/modprobe.h>
 #include <private/android_filesystem_config.h>
 
 #include "debug_ramdisk.h"
+#include "first_stage_console.h"
 #include "first_stage_mount.h"
 #include "reboot_utils.h"
 #include "switch_root.h"
@@ -75,7 +78,7 @@
 
             if (S_ISDIR(info.st_mode)) {
                 is_dir = true;
-                auto fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
+                auto fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
                 if (fd >= 0) {
                     auto subdir =
                             std::unique_ptr<DIR, decltype(&closedir)>{fdopendir(fd), closedir};
@@ -91,14 +94,83 @@
     }
 }
 
-bool ForceNormalBoot() {
-    std::string cmdline;
-    android::base::ReadFileToString("/proc/cmdline", &cmdline);
+bool ForceNormalBoot(const std::string& cmdline) {
     return cmdline.find("androidboot.force_normal_boot=1") != std::string::npos;
 }
 
 }  // namespace
 
+std::string GetModuleLoadList(bool recovery, const std::string& dir_path) {
+    auto module_load_file = "modules.load";
+    if (recovery) {
+        struct stat fileStat;
+        std::string recovery_load_path = dir_path + "/modules.load.recovery";
+        if (!stat(recovery_load_path.c_str(), &fileStat)) {
+            module_load_file = "modules.load.recovery";
+        }
+    }
+
+    return module_load_file;
+}
+
+#define MODULE_BASE_DIR "/lib/modules"
+bool LoadKernelModules(bool recovery, bool want_console) {
+    struct utsname uts;
+    if (uname(&uts)) {
+        LOG(FATAL) << "Failed to get kernel version.";
+    }
+    int major, minor;
+    if (sscanf(uts.release, "%d.%d", &major, &minor) != 2) {
+        LOG(FATAL) << "Failed to parse kernel version " << uts.release;
+    }
+
+    std::unique_ptr<DIR, decltype(&closedir)> base_dir(opendir(MODULE_BASE_DIR), closedir);
+    if (!base_dir) {
+        LOG(INFO) << "Unable to open /lib/modules, skipping module loading.";
+        return true;
+    }
+    dirent* entry;
+    std::vector<std::string> module_dirs;
+    while ((entry = readdir(base_dir.get()))) {
+        if (entry->d_type != DT_DIR) {
+            continue;
+        }
+        int dir_major, dir_minor;
+        if (sscanf(entry->d_name, "%d.%d", &dir_major, &dir_minor) != 2 || dir_major != major ||
+            dir_minor != minor) {
+            continue;
+        }
+        module_dirs.emplace_back(entry->d_name);
+    }
+
+    // Sort the directories so they are iterated over during module loading
+    // in a consistent order. Alphabetical sorting is fine here because the
+    // kernel version at the beginning of the directory name must match the
+    // current kernel version, so the sort only applies to a label that
+    // follows the kernel version, for example /lib/modules/5.4 vs.
+    // /lib/modules/5.4-gki.
+    std::sort(module_dirs.begin(), module_dirs.end());
+
+    for (const auto& module_dir : module_dirs) {
+        std::string dir_path = MODULE_BASE_DIR "/";
+        dir_path.append(module_dir);
+        Modprobe m({dir_path}, GetModuleLoadList(recovery, dir_path));
+        bool retval = m.LoadListedModules(!want_console);
+        int modules_loaded = m.GetModuleCount();
+        if (modules_loaded > 0) {
+            return retval;
+        }
+    }
+
+    Modprobe m({MODULE_BASE_DIR}, GetModuleLoadList(recovery, MODULE_BASE_DIR));
+    bool retval = m.LoadListedModules(!want_console);
+    int modules_loaded = m.GetModuleCount();
+    if (modules_loaded > 0) {
+        return retval;
+    }
+    return true;
+}
+
 int FirstStageMain(int argc, char** argv) {
     if (REBOOT_BOOTLOADER_ON_PANIC) {
         InstallRebootSignalHandlers();
@@ -108,7 +180,7 @@
 
     std::vector<std::pair<std::string, int>> errors;
 #define CHECKCALL(x) \
-    if (x != 0) errors.emplace_back(#x " failed", errno);
+    if ((x) != 0) errors.emplace_back(#x " failed", errno);
 
     // Clear the umask.
     umask(0);
@@ -126,6 +198,8 @@
 #undef MAKE_STR
     // Don't expose the raw commandline to unprivileged processes.
     CHECKCALL(chmod("/proc/cmdline", 0440));
+    std::string cmdline;
+    android::base::ReadFileToString("/proc/cmdline", &cmdline);
     gid_t groups[] = {AID_READPROC};
     CHECKCALL(setgroups(arraysize(groups), groups));
     CHECKCALL(mount("sysfs", "/sys", "sysfs", 0, NULL));
@@ -158,10 +232,6 @@
     // part of the product partition, e.g. because they are mounted read-write.
     CHECKCALL(mkdir("/mnt/product", 0755));
 
-    // /apex is used to mount APEXes
-    CHECKCALL(mount("tmpfs", "/apex", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV,
-                    "mode=0755,uid=0,gid=0"));
-
     // /debug_ramdisk is used to preserve additional files from the debug ramdisk
     CHECKCALL(mount("tmpfs", "/debug_ramdisk", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV,
                     "mode=0755,uid=0,gid=0"));
@@ -192,7 +262,21 @@
         old_root_dir.reset();
     }
 
-    if (ForceNormalBoot()) {
+    auto want_console = ALLOW_FIRST_STAGE_CONSOLE ? FirstStageConsole(cmdline) : 0;
+
+    if (!LoadKernelModules(IsRecoveryMode() && !ForceNormalBoot(cmdline), want_console)) {
+        if (want_console != FirstStageConsoleParam::DISABLED) {
+            LOG(ERROR) << "Failed to load kernel modules, starting console";
+        } else {
+            LOG(FATAL) << "Failed to load kernel modules";
+        }
+    }
+
+    if (want_console == FirstStageConsoleParam::CONSOLE_ON_FAILURE) {
+        StartConsole();
+    }
+
+    if (ForceNormalBoot(cmdline)) {
         mkdir("/first_stage_ramdisk", 0755);
         // SwitchRoot() must be called with a mount point as the target, so we bind mount the
         // target directory to itself here.
@@ -231,12 +315,15 @@
 
     SetInitAvbVersionInRecovery();
 
-    static constexpr uint32_t kNanosecondsPerMillisecond = 1e6;
-    uint64_t start_ms = start_time.time_since_epoch().count() / kNanosecondsPerMillisecond;
-    setenv("INIT_STARTED_AT", std::to_string(start_ms).c_str(), 1);
+    setenv(kEnvFirstStageStartedAt, std::to_string(start_time.time_since_epoch().count()).c_str(),
+           1);
 
     const char* path = "/system/bin/init";
     const char* args[] = {path, "selinux_setup", nullptr};
+    auto fd = open("/dev/kmsg", O_WRONLY | O_CLOEXEC);
+    dup2(fd, STDOUT_FILENO);
+    dup2(fd, STDERR_FILENO);
+    close(fd);
     execv(path, const_cast<char**>(args));
 
     // execv() only returns if an error happened, in which case we
diff --git a/init/first_stage_init.h b/init/first_stage_init.h
index 0476e44..7de816f 100644
--- a/init/first_stage_init.h
+++ b/init/first_stage_init.h
@@ -21,5 +21,7 @@
 
 int FirstStageMain(int argc, char** argv);
 
+static constexpr char kEnvFirstStageStartedAt[] = "FIRST_STAGE_STARTED_AT";
+
 }  // namespace init
 }  // namespace android
diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index 3e76556..8eb2f97 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -21,6 +21,8 @@
 #include <unistd.h>
 
 #include <chrono>
+#include <filesystem>
+#include <map>
 #include <memory>
 #include <set>
 #include <string>
@@ -29,32 +31,40 @@
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <fs_avb/fs_avb.h>
 #include <fs_mgr.h>
 #include <fs_mgr_dm_linear.h>
 #include <fs_mgr_overlayfs.h>
+#include <libfiemap/image_manager.h>
 #include <libgsi/libgsi.h>
 #include <liblp/liblp.h>
+#include <libsnapshot/snapshot.h>
 
+#include "block_dev_initializer.h"
 #include "devices.h"
 #include "switch_root.h"
 #include "uevent.h"
 #include "uevent_listener.h"
 #include "util.h"
 
+using android::base::ReadFileToString;
 using android::base::Split;
+using android::base::StringPrintf;
 using android::base::Timer;
+using android::fiemap::IImageManager;
 using android::fs_mgr::AvbHandle;
 using android::fs_mgr::AvbHandleStatus;
 using android::fs_mgr::AvbHashtreeResult;
 using android::fs_mgr::AvbUniquePtr;
-using android::fs_mgr::BuildGsiSystemFstabEntry;
 using android::fs_mgr::Fstab;
 using android::fs_mgr::FstabEntry;
 using android::fs_mgr::ReadDefaultFstab;
 using android::fs_mgr::ReadFstabFromDt;
 using android::fs_mgr::SkipMountingPartitions;
+using android::fs_mgr::TransformFstabForDsu;
+using android::snapshot::SnapshotManager;
 
 using namespace std::literals;
 
@@ -75,10 +85,7 @@
     bool InitDevices();
 
   protected:
-    ListenerAction HandleBlockDevice(const std::string& name, const Uevent&);
-    bool InitRequiredDevices();
-    bool InitMappedDevice(const std::string& verity_device);
-    bool InitDeviceMapper();
+    bool InitRequiredDevices(std::set<std::string> devices);
     bool CreateLogicalPartitions();
     bool MountPartition(const Fstab::iterator& begin, bool erase_same_mounts,
                         Fstab::iterator* end = nullptr);
@@ -87,25 +94,30 @@
     bool TrySwitchSystemAsRoot();
     bool TrySkipMountingPartitions();
     bool IsDmLinearEnabled();
-    bool GetDmLinearMetadataDevice();
+    void GetSuperDeviceName(std::set<std::string>* devices);
     bool InitDmLinearBackingDevices(const android::fs_mgr::LpMetadata& metadata);
-    void UseGsiIfPresent();
-
-    ListenerAction UeventCallback(const Uevent& uevent);
+    void UseDsuIfPresent();
+    // Reads all fstab.avb_keys from the ramdisk for first-stage mount.
+    void PreloadAvbKeys();
+    // Copies /avb/*.avbpubkey used for DSU from the ramdisk to /metadata for key
+    // revocation check by DSU installation service.
+    void CopyDsuAvbKeys();
 
     // Pure virtual functions.
-    virtual bool GetDmVerityDevices() = 0;
+    virtual bool GetDmVerityDevices(std::set<std::string>* devices) = 0;
     virtual bool SetUpDmVerity(FstabEntry* fstab_entry) = 0;
 
     bool need_dm_verity_;
-    bool gsi_not_on_userdata_ = false;
+    bool dsu_not_on_userdata_ = false;
 
     Fstab fstab_;
-    std::string lp_metadata_partition_;
-    std::set<std::string> required_devices_partition_names_;
+    // The super path is only set after InitDevices, and is invalid before.
+    std::string super_path_;
     std::string super_partition_name_;
-    std::unique_ptr<DeviceHandler> device_handler_;
-    UeventListener uevent_listener_;
+    BlockDevInitializer block_dev_init_;
+    // Reads all AVB keys before chroot into /system, as they might be used
+    // later when mounting other partitions, e.g., /vendor and /product.
+    std::map<std::string, std::vector<std::string>> preload_avb_key_blobs_;
 };
 
 class FirstStageMountVBootV1 : public FirstStageMount {
@@ -114,7 +126,7 @@
     ~FirstStageMountVBootV1() override = default;
 
   protected:
-    bool GetDmVerityDevices() override;
+    bool GetDmVerityDevices(std::set<std::string>* devices) override;
     bool SetUpDmVerity(FstabEntry* fstab_entry) override;
 };
 
@@ -126,7 +138,7 @@
     ~FirstStageMountVBootV2() override = default;
 
   protected:
-    bool GetDmVerityDevices() override;
+    bool GetDmVerityDevices(std::set<std::string>* devices) override;
     bool SetUpDmVerity(FstabEntry* fstab_entry) override;
     bool InitAvbHandle();
 
@@ -216,13 +228,7 @@
 
 // Class Definitions
 // -----------------
-FirstStageMount::FirstStageMount(Fstab fstab)
-    : need_dm_verity_(false), fstab_(std::move(fstab)), uevent_listener_(16 * 1024 * 1024) {
-    auto boot_devices = android::fs_mgr::GetBootDevices();
-    device_handler_ = std::make_unique<DeviceHandler>(
-            std::vector<Permissions>{}, std::vector<SysfsPermissions>{}, std::vector<Subsystem>{},
-            std::move(boot_devices), false);
-
+FirstStageMount::FirstStageMount(Fstab fstab) : need_dm_verity_(false), fstab_(std::move(fstab)) {
     super_partition_name_ = fs_mgr_get_super_partition_name();
 }
 
@@ -244,15 +250,30 @@
 
     if (!InitDevices()) return false;
 
-    if (!CreateLogicalPartitions()) return false;
-
     if (!MountPartitions()) return false;
 
     return true;
 }
 
 bool FirstStageMount::InitDevices() {
-    return GetDmLinearMetadataDevice() && GetDmVerityDevices() && InitRequiredDevices();
+    std::set<std::string> devices;
+    GetSuperDeviceName(&devices);
+
+    if (!GetDmVerityDevices(&devices)) {
+        return false;
+    }
+    if (!InitRequiredDevices(std::move(devices))) {
+        return false;
+    }
+
+    if (IsDmLinearEnabled()) {
+        auto super_symlink = "/dev/block/by-name/"s + super_partition_name_;
+        if (!android::base::Realpath(super_symlink, &super_path_)) {
+            PLOG(ERROR) << "realpath failed: " << super_symlink;
+            return false;
+        }
+    }
+    return true;
 }
 
 bool FirstStageMount::IsDmLinearEnabled() {
@@ -262,192 +283,79 @@
     return false;
 }
 
-bool FirstStageMount::GetDmLinearMetadataDevice() {
+void FirstStageMount::GetSuperDeviceName(std::set<std::string>* devices) {
     // Add any additional devices required for dm-linear mappings.
     if (!IsDmLinearEnabled()) {
-        return true;
+        return;
     }
 
-    required_devices_partition_names_.emplace(super_partition_name_);
-    return true;
+    devices->emplace(super_partition_name_);
 }
 
-// Creates devices with uevent->partition_name matching one in the member variable
-// required_devices_partition_names_. Found partitions will then be removed from it
-// for the subsequent member function to check which devices are NOT created.
-bool FirstStageMount::InitRequiredDevices() {
-    if (required_devices_partition_names_.empty()) {
+// Creates devices with uevent->partition_name matching ones in the given set.
+// Found partitions will then be removed from it for the subsequent member
+// function to check which devices are NOT created.
+bool FirstStageMount::InitRequiredDevices(std::set<std::string> devices) {
+    if (!block_dev_init_.InitDeviceMapper()) {
+        return false;
+    }
+    if (devices.empty()) {
         return true;
     }
-
-    if (IsDmLinearEnabled() || need_dm_verity_) {
-        if (!InitDeviceMapper()) {
-            return false;
-        }
-    }
-
-    auto uevent_callback = [this](const Uevent& uevent) { return UeventCallback(uevent); };
-    uevent_listener_.RegenerateUevents(uevent_callback);
-
-    // UeventCallback() will remove found partitions from required_devices_partition_names_.
-    // So if it isn't empty here, it means some partitions are not found.
-    if (!required_devices_partition_names_.empty()) {
-        LOG(INFO) << __PRETTY_FUNCTION__
-                  << ": partition(s) not found in /sys, waiting for their uevent(s): "
-                  << android::base::Join(required_devices_partition_names_, ", ");
-        Timer t;
-        uevent_listener_.Poll(uevent_callback, 10s);
-        LOG(INFO) << "Wait for partitions returned after " << t;
-    }
-
-    if (!required_devices_partition_names_.empty()) {
-        LOG(ERROR) << __PRETTY_FUNCTION__ << ": partition(s) not found after polling timeout: "
-                   << android::base::Join(required_devices_partition_names_, ", ");
-        return false;
-    }
-
-    return true;
-}
-
-bool FirstStageMount::InitDeviceMapper() {
-    const std::string dm_path = "/devices/virtual/misc/device-mapper";
-    bool found = false;
-    auto dm_callback = [this, &dm_path, &found](const Uevent& uevent) {
-        if (uevent.path == dm_path) {
-            device_handler_->HandleUevent(uevent);
-            found = true;
-            return ListenerAction::kStop;
-        }
-        return ListenerAction::kContinue;
-    };
-    uevent_listener_.RegenerateUeventsForPath("/sys" + dm_path, dm_callback);
-    if (!found) {
-        LOG(INFO) << "device-mapper device not found in /sys, waiting for its uevent";
-        Timer t;
-        uevent_listener_.Poll(dm_callback, 10s);
-        LOG(INFO) << "Wait for device-mapper returned after " << t;
-    }
-    if (!found) {
-        LOG(ERROR) << "device-mapper device not found after polling timeout";
-        return false;
-    }
-    return true;
+    return block_dev_init_.InitDevices(std::move(devices));
 }
 
 bool FirstStageMount::InitDmLinearBackingDevices(const android::fs_mgr::LpMetadata& metadata) {
+    std::set<std::string> devices;
+
     auto partition_names = android::fs_mgr::GetBlockDevicePartitionNames(metadata);
     for (const auto& partition_name : partition_names) {
         // The super partition was found in the earlier pass.
         if (partition_name == super_partition_name_) {
             continue;
         }
-        required_devices_partition_names_.emplace(partition_name);
+        devices.emplace(partition_name);
     }
-    if (required_devices_partition_names_.empty()) {
+    if (devices.empty()) {
         return true;
     }
-
-    auto uevent_callback = [this](const Uevent& uevent) { return UeventCallback(uevent); };
-    uevent_listener_.RegenerateUevents(uevent_callback);
-
-    if (!required_devices_partition_names_.empty()) {
-        LOG(ERROR) << __PRETTY_FUNCTION__ << ": partition(s) not found after polling timeout: "
-                   << android::base::Join(required_devices_partition_names_, ", ");
-        return false;
-    }
-    return true;
+    return InitRequiredDevices(std::move(devices));
 }
 
 bool FirstStageMount::CreateLogicalPartitions() {
     if (!IsDmLinearEnabled()) {
         return true;
     }
-    if (lp_metadata_partition_.empty()) {
+    if (super_path_.empty()) {
         LOG(ERROR) << "Could not locate logical partition tables in partition "
                    << super_partition_name_;
         return false;
     }
 
-    auto metadata = android::fs_mgr::ReadCurrentMetadata(lp_metadata_partition_);
+    if (SnapshotManager::IsSnapshotManagerNeeded()) {
+        auto sm = SnapshotManager::NewForFirstStageMount();
+        if (!sm) {
+            return false;
+        }
+        if (sm->NeedSnapshotsInFirstStageMount()) {
+            // When COW images are present for snapshots, they are stored on
+            // the data partition.
+            if (!InitRequiredDevices({"userdata"})) {
+                return false;
+            }
+            return sm->CreateLogicalAndSnapshotPartitions(super_path_);
+        }
+    }
+
+    auto metadata = android::fs_mgr::ReadCurrentMetadata(super_path_);
     if (!metadata) {
-        LOG(ERROR) << "Could not read logical partition metadata from " << lp_metadata_partition_;
+        LOG(ERROR) << "Could not read logical partition metadata from " << super_path_;
         return false;
     }
     if (!InitDmLinearBackingDevices(*metadata.get())) {
         return false;
     }
-    return android::fs_mgr::CreateLogicalPartitions(*metadata.get(), lp_metadata_partition_);
-}
-
-ListenerAction FirstStageMount::HandleBlockDevice(const std::string& name, const Uevent& uevent) {
-    // Matches partition name to create device nodes.
-    // Both required_devices_partition_names_ and uevent->partition_name have A/B
-    // suffix when A/B is used.
-    auto iter = required_devices_partition_names_.find(name);
-    if (iter != required_devices_partition_names_.end()) {
-        LOG(VERBOSE) << __PRETTY_FUNCTION__ << ": found partition: " << *iter;
-        if (IsDmLinearEnabled() && name == super_partition_name_) {
-            std::vector<std::string> links = device_handler_->GetBlockDeviceSymlinks(uevent);
-            lp_metadata_partition_ = links[0];
-        }
-        required_devices_partition_names_.erase(iter);
-        device_handler_->HandleUevent(uevent);
-        if (required_devices_partition_names_.empty()) {
-            return ListenerAction::kStop;
-        } else {
-            return ListenerAction::kContinue;
-        }
-    }
-    return ListenerAction::kContinue;
-}
-
-ListenerAction FirstStageMount::UeventCallback(const Uevent& uevent) {
-    // Ignores everything that is not a block device.
-    if (uevent.subsystem != "block") {
-        return ListenerAction::kContinue;
-    }
-
-    if (!uevent.partition_name.empty()) {
-        return HandleBlockDevice(uevent.partition_name, uevent);
-    } else {
-        size_t base_idx = uevent.path.rfind('/');
-        if (base_idx != std::string::npos) {
-            return HandleBlockDevice(uevent.path.substr(base_idx + 1), uevent);
-        }
-    }
-    // Not found a partition or find an unneeded partition, continue to find others.
-    return ListenerAction::kContinue;
-}
-
-// Creates "/dev/block/dm-XX" for dm-verity by running coldboot on /sys/block/dm-XX.
-bool FirstStageMount::InitMappedDevice(const std::string& dm_device) {
-    const std::string device_name(basename(dm_device.c_str()));
-    const std::string syspath = "/sys/block/" + device_name;
-    bool found = false;
-
-    auto verity_callback = [&device_name, &dm_device, this, &found](const Uevent& uevent) {
-        if (uevent.device_name == device_name) {
-            LOG(VERBOSE) << "Creating device-mapper device : " << dm_device;
-            device_handler_->HandleUevent(uevent);
-            found = true;
-            return ListenerAction::kStop;
-        }
-        return ListenerAction::kContinue;
-    };
-
-    uevent_listener_.RegenerateUeventsForPath(syspath, verity_callback);
-    if (!found) {
-        LOG(INFO) << "dm device '" << dm_device << "' not found in /sys, waiting for its uevent";
-        Timer t;
-        uevent_listener_.Poll(verity_callback, 10s);
-        LOG(INFO) << "wait for dm device '" << dm_device << "' returned after " << t;
-    }
-    if (!found) {
-        LOG(ERROR) << "dm device '" << dm_device << "' not found after polling timeout";
-        return false;
-    }
-
-    return true;
+    return android::fs_mgr::CreateLogicalPartitions(*metadata.get(), super_path_);
 }
 
 bool FirstStageMount::MountPartition(const Fstab::iterator& begin, bool erase_same_mounts,
@@ -461,7 +369,7 @@
         if (!fs_mgr_update_logical_partition(&(*begin))) {
             return false;
         }
-        if (!InitMappedDevice(begin->blk_device)) {
+        if (!block_dev_init_.InitDmDevice(begin->blk_device)) {
             return false;
         }
     }
@@ -491,18 +399,57 @@
     return mounted;
 }
 
+void FirstStageMount::PreloadAvbKeys() {
+    for (const auto& entry : fstab_) {
+        // No need to cache the key content if it's empty, or is already cached.
+        if (entry.avb_keys.empty() || preload_avb_key_blobs_.count(entry.avb_keys)) {
+            continue;
+        }
+
+        // Determines all key paths first.
+        std::vector<std::string> key_paths;
+        if (is_dir(entry.avb_keys.c_str())) {  // fstab_keys might be a dir, e.g., /avb.
+            const char* avb_key_dir = entry.avb_keys.c_str();
+            std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir(avb_key_dir), closedir);
+            if (!dir) {
+                LOG(ERROR) << "Failed to opendir: " << dir;
+                continue;
+            }
+            // Gets all key pathes under the dir.
+            struct dirent* de;
+            while ((de = readdir(dir.get()))) {
+                if (de->d_type != DT_REG) continue;
+                std::string full_path = StringPrintf("%s/%s", avb_key_dir, de->d_name);
+                key_paths.emplace_back(std::move(full_path));
+            }
+            std::sort(key_paths.begin(), key_paths.end());
+        } else {
+            // avb_keys are key paths separated by ":", if it's not a dir.
+            key_paths = Split(entry.avb_keys, ":");
+        }
+
+        // Reads the key content then cache it.
+        std::vector<std::string> key_blobs;
+        for (const auto& path : key_paths) {
+            std::string key_value;
+            if (!ReadFileToString(path, &key_value)) {
+                continue;
+            }
+            key_blobs.emplace_back(std::move(key_value));
+        }
+
+        // Maps entry.avb_keys to actual key blobs.
+        preload_avb_key_blobs_[entry.avb_keys] = std::move(key_blobs);
+    }
+}
+
 // If system is in the fstab then we're not a system-as-root device, and in
 // this case, we mount system first then pivot to it.  From that point on,
 // we are effectively identical to a system-as-root device.
 bool FirstStageMount::TrySwitchSystemAsRoot() {
-    auto metadata_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
-        return entry.mount_point == "/metadata";
-    });
-    if (metadata_partition != fstab_.end()) {
-        if (MountPartition(metadata_partition, true /* erase_same_mounts */)) {
-            UseGsiIfPresent();
-        }
-    }
+    UseDsuIfPresent();
+    // Preloading all AVB keys from the ramdisk before switching root to /system.
+    PreloadAvbKeys();
 
     auto system_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
         return entry.mount_point == "/system";
@@ -511,7 +458,7 @@
     if (system_partition == fstab_.end()) return true;
 
     if (MountPartition(system_partition, false /* erase_same_mounts */)) {
-        if (gsi_not_on_userdata_ && fs_mgr_verity_is_check_at_most_once(*system_partition)) {
+        if (dsu_not_on_userdata_ && fs_mgr_verity_is_check_at_most_once(*system_partition)) {
             LOG(ERROR) << "check_most_at_once forbidden on external media";
             return false;
         }
@@ -525,6 +472,22 @@
 }
 
 bool FirstStageMount::MountPartitions() {
+    // Mount /metadata before creating logical partitions, since we need to
+    // know whether a snapshot merge is in progress.
+    auto metadata_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
+        return entry.mount_point == "/metadata";
+    });
+    if (metadata_partition != fstab_.end()) {
+        if (MountPartition(metadata_partition, true /* erase_same_mounts */)) {
+            // Copies DSU AVB keys from the ramdisk to /metadata.
+            // Must be done before the following TrySwitchSystemAsRoot().
+            // Otherwise, ramdisk will be inaccessible after switching root.
+            CopyDsuAvbKeys();
+        }
+    }
+
+    if (!CreateLogicalPartitions()) return false;
+
     if (!TrySwitchSystemAsRoot()) return false;
 
     if (!SkipMountingPartitions(&fstab_)) return false;
@@ -536,6 +499,14 @@
             continue;
         }
 
+        // Skip raw partition entries such as boot, dtbo, etc.
+        // Having emmc fstab entries allows us to probe current->vbmeta_partition
+        // in InitDevices() when they are AVB chained partitions.
+        if (current->fs_type == "emmc") {
+            ++current;
+            continue;
+        }
+
         Fstab::iterator end;
         if (!MountPartition(current, false /* erase_same_mounts */, &end)) {
             if (current->fs_mgr_flags.no_fail) {
@@ -562,89 +533,90 @@
     }
 
     // heads up for instantiating required device(s) for overlayfs logic
-    const auto devices = fs_mgr_overlayfs_required_devices(&fstab_);
-    for (auto const& device : devices) {
-        if (android::base::StartsWith(device, "/dev/block/by-name/")) {
-            required_devices_partition_names_.emplace(basename(device.c_str()));
-            auto uevent_callback = [this](const Uevent& uevent) { return UeventCallback(uevent); };
-            uevent_listener_.RegenerateUevents(uevent_callback);
-            if (!required_devices_partition_names_.empty()) {
-                uevent_listener_.Poll(uevent_callback, 10s);
-                if (!required_devices_partition_names_.empty()) {
-                    LOG(ERROR) << __PRETTY_FUNCTION__
-                               << ": partition(s) not found after polling timeout: "
-                               << android::base::Join(required_devices_partition_names_, ", ");
+    auto init_devices = [this](std::set<std::string> devices) -> bool {
+        for (auto iter = devices.begin(); iter != devices.end();) {
+            if (android::base::StartsWith(*iter, "/dev/block/dm-")) {
+                if (!block_dev_init_.InitDmDevice(*iter)) {
+                    return false;
                 }
+                iter = devices.erase(iter);
+            } else {
+                iter++;
             }
-        } else {
-            InitMappedDevice(device);
         }
-    }
+        return InitRequiredDevices(std::move(devices));
+    };
+    MapScratchPartitionIfNeeded(&fstab_, init_devices);
 
     fs_mgr_overlayfs_mount_all(&fstab_);
 
     return true;
 }
 
-void FirstStageMount::UseGsiIfPresent() {
-    std::string metadata_file, error;
+// Preserves /avb/*.avbpubkey to /metadata/gsi/dsu/avb/, so they can be used for
+// key revocation check by DSU installation service.  Note that failing to
+// copy files to /metadata is NOT fatal, because it is auxiliary to perform
+// public key matching before booting into DSU images on next boot. The actual
+// public key matching will still be done on next boot to DSU.
+void FirstStageMount::CopyDsuAvbKeys() {
+    std::error_code ec;
+    // Removing existing keys in gsi::kDsuAvbKeyDir as they might be stale.
+    std::filesystem::remove_all(gsi::kDsuAvbKeyDir, ec);
+    if (ec) {
+        LOG(ERROR) << "Failed to remove directory " << gsi::kDsuAvbKeyDir << ": " << ec.message();
+    }
+    // Copy keys from the ramdisk /avb/* to gsi::kDsuAvbKeyDir.
+    static constexpr char kRamdiskAvbKeyDir[] = "/avb";
+    std::filesystem::copy(kRamdiskAvbKeyDir, gsi::kDsuAvbKeyDir, ec);
+    if (ec) {
+        LOG(ERROR) << "Failed to copy " << kRamdiskAvbKeyDir << " into " << gsi::kDsuAvbKeyDir
+                   << ": " << ec.message();
+    }
+}
 
-    if (!android::gsi::CanBootIntoGsi(&metadata_file, &error)) {
-        LOG(INFO) << "GSI " << error << ", proceeding with normal boot";
+void FirstStageMount::UseDsuIfPresent() {
+    std::string error;
+
+    if (!android::gsi::CanBootIntoGsi(&error)) {
+        LOG(INFO) << "DSU " << error << ", proceeding with normal boot";
         return;
     }
 
-    auto metadata = android::fs_mgr::ReadFromImageFile(metadata_file.c_str());
-    if (!metadata) {
-        LOG(ERROR) << "GSI partition layout could not be read";
+    auto init_devices = [this](std::set<std::string> devices) -> bool {
+        if (devices.count("userdata") == 0 || devices.size() > 1) {
+            dsu_not_on_userdata_ = true;
+        }
+        return InitRequiredDevices(std::move(devices));
+    };
+    std::string active_dsu;
+    if (!gsi::GetActiveDsu(&active_dsu)) {
+        LOG(ERROR) << "Failed to GetActiveDsu";
         return;
     }
-
-    if (!InitDmLinearBackingDevices(*metadata.get())) {
-        return;
-    }
-
-    // Device-mapper might not be ready if the device doesn't use DAP or verity
-    // (for example, hikey).
-    if (access("/dev/device-mapper", F_OK) && !InitDeviceMapper()) {
-        return;
-    }
-
-    // Find the name of the super partition for the GSI. It will either be
-    // "userdata", or a block device such as an sdcard. There are no by-name
-    // partitions other than userdata that we support installing GSIs to.
-    auto super = GetMetadataSuperBlockDevice(*metadata.get());
-    std::string super_name = android::fs_mgr::GetBlockDevicePartitionName(*super);
-    std::string super_path;
-    if (super_name == "userdata") {
-        super_path = "/dev/block/by-name/" + super_name;
-    } else {
-        super_path = "/dev/block/" + super_name;
-    }
-
-    if (!android::fs_mgr::CreateLogicalPartitions(*metadata.get(), super_path)) {
-        LOG(ERROR) << "GSI partition layout could not be instantiated";
+    LOG(INFO) << "DSU slot: " << active_dsu;
+    auto images = IImageManager::Open("dsu/" + active_dsu, 0ms);
+    if (!images || !images->MapAllImages(init_devices)) {
+        LOG(ERROR) << "DSU partition layout could not be instantiated";
         return;
     }
 
     if (!android::gsi::MarkSystemAsGsi()) {
-        PLOG(ERROR) << "GSI indicator file could not be written";
+        PLOG(ERROR) << "DSU indicator file could not be written";
         return;
     }
 
-    // Replace the existing system fstab entry.
-    auto system_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
-        return entry.mount_point == "/system";
-    });
-    if (system_partition != fstab_.end()) {
-        fstab_.erase(system_partition);
+    std::string lp_names = "";
+    std::vector<std::string> dsu_partitions;
+    for (auto&& name : images->GetAllBackingImages()) {
+        dsu_partitions.push_back(name);
+        lp_names += name + ",";
     }
-    fstab_.emplace_back(BuildGsiSystemFstabEntry());
-    gsi_not_on_userdata_ = (super_name != "userdata");
+    // Publish the logical partition names for TransformFstabForDsu
+    WriteFile(gsi::kGsiLpNamesFile, lp_names);
+    TransformFstabForDsu(&fstab_, dsu_partitions);
 }
 
-bool FirstStageMountVBootV1::GetDmVerityDevices() {
-    std::string verity_loc_device;
+bool FirstStageMountVBootV1::GetDmVerityDevices(std::set<std::string>* devices) {
     need_dm_verity_ = false;
 
     for (const auto& fstab_entry : fstab_) {
@@ -657,32 +629,16 @@
         if (fstab_entry.fs_mgr_flags.verify) {
             need_dm_verity_ = true;
         }
-        // Checks if verity metadata is on a separate partition. Note that it is
-        // not partition specific, so there must be only one additional partition
-        // that carries verity state.
-        if (!fstab_entry.verity_loc.empty()) {
-            if (verity_loc_device.empty()) {
-                verity_loc_device = fstab_entry.verity_loc;
-            } else if (verity_loc_device != fstab_entry.verity_loc) {
-                LOG(ERROR) << "More than one verity_loc found: " << verity_loc_device << ", "
-                           << fstab_entry.verity_loc;
-                return false;
-            }
-        }
     }
 
-    // Includes the partition names of fstab records and verity_loc_device (if any).
+    // Includes the partition names of fstab records.
     // Notes that fstab_rec->blk_device has A/B suffix updated by fs_mgr when A/B is used.
     for (const auto& fstab_entry : fstab_) {
         if (!fstab_entry.fs_mgr_flags.logical) {
-            required_devices_partition_names_.emplace(basename(fstab_entry.blk_device.c_str()));
+            devices->emplace(basename(fstab_entry.blk_device.c_str()));
         }
     }
 
-    if (!verity_loc_device.empty()) {
-        required_devices_partition_names_.emplace(basename(verity_loc_device.c_str()));
-    }
-
     return true;
 }
 
@@ -698,7 +654,7 @@
                 // The exact block device name (fstab_rec->blk_device) is changed to
                 // "/dev/block/dm-XX". Needs to create it because ueventd isn't started in init
                 // first stage.
-                return InitMappedDevice(fstab_entry->blk_device);
+                return block_dev_init_.InitDmDevice(fstab_entry->blk_device);
             default:
                 return false;
         }
@@ -730,7 +686,7 @@
     }
 }
 
-bool FirstStageMountVBootV2::GetDmVerityDevices() {
+bool FirstStageMountVBootV2::GetDmVerityDevices(std::set<std::string>* devices) {
     need_dm_verity_ = false;
 
     std::set<std::string> logical_partitions;
@@ -744,7 +700,7 @@
             // Don't try to find logical partitions via uevent regeneration.
             logical_partitions.emplace(basename(fstab_entry.blk_device.c_str()));
         } else {
-            required_devices_partition_names_.emplace(basename(fstab_entry.blk_device.c_str()));
+            devices->emplace(basename(fstab_entry.blk_device.c_str()));
         }
     }
 
@@ -761,11 +717,11 @@
             if (logical_partitions.count(partition_name)) {
                 continue;
             }
-            // required_devices_partition_names_ is of type std::set so it's not an issue
-            // to emplace a partition twice. e.g., /vendor might be in both places:
+            // devices is of type std::set so it's not an issue to emplace a
+            // partition twice. e.g., /vendor might be in both places:
             //   - device_tree_vbmeta_parts_ = "vbmeta,boot,system,vendor"
             //   - mount_fstab_recs_: /vendor_a
-            required_devices_partition_names_.emplace(partition_name);
+            devices->emplace(partition_name);
         }
     }
     return true;
@@ -785,7 +741,8 @@
                        << fstab_entry->mount_point;
             return true;  // Returns true to mount the partition directly.
         } else {
-            auto avb_standalone_handle = AvbHandle::LoadAndVerifyVbmeta(*fstab_entry);
+            auto avb_standalone_handle = AvbHandle::LoadAndVerifyVbmeta(
+                    *fstab_entry, preload_avb_key_blobs_[fstab_entry->avb_keys]);
             if (!avb_standalone_handle) {
                 LOG(ERROR) << "Failed to load offline vbmeta for " << fstab_entry->mount_point;
                 // Fallbacks to built-in hashtree if fs_mgr_flags.avb is set.
@@ -817,7 +774,7 @@
             // The exact block device name (fstab_rec->blk_device) is changed to
             // "/dev/block/dm-XX". Needs to create it because ueventd isn't started in init
             // first stage.
-            return InitMappedDevice(fstab_entry->blk_device);
+            return block_dev_init_.InitDmDevice(fstab_entry->blk_device);
         default:
             return false;
     }
diff --git a/init/fscrypt_init_extensions.cpp b/init/fscrypt_init_extensions.cpp
new file mode 100644
index 0000000..fbd8189
--- /dev/null
+++ b/init/fscrypt_init_extensions.cpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fscrypt_init_extensions.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <fts.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <string>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/parseint.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <cutils/properties.h>
+#include <cutils/sockets.h>
+#include <fscrypt/fscrypt.h>
+#include <keyutils.h>
+#include <logwrap/logwrap.h>
+
+#define TAG "fscrypt"
+
+using namespace android::fscrypt;
+
+bool FscryptInstallKeyring() {
+    if (keyctl_search(KEY_SPEC_SESSION_KEYRING, "keyring", "fscrypt", 0) != -1) {
+        LOG(INFO) << "Keyring is already created";
+        return true;
+    }
+    key_serial_t device_keyring = add_key("keyring", "fscrypt", 0, 0, KEY_SPEC_SESSION_KEYRING);
+
+    if (device_keyring == -1) {
+        PLOG(ERROR) << "Failed to create keyring";
+        return false;
+    }
+    LOG(INFO) << "Keyring created with id " << device_keyring << " in process " << getpid();
+    return true;
+}
+
+// TODO(b/139378601): use a single central implementation of this.
+static void delete_dir_contents(const std::string& dir) {
+    char* const paths[2] = {const_cast<char*>(dir.c_str()), nullptr};
+    FTS* fts = fts_open(paths, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr);
+    FTSENT* cur;
+    while ((cur = fts_read(fts)) != nullptr) {
+        if (cur->fts_info == FTS_ERR) {
+            PLOG(ERROR) << "fts_read";
+            break;
+        }
+        if (dir == cur->fts_path) {
+            continue;
+        }
+        switch (cur->fts_info) {
+            case FTS_D:
+                break;  // Ignore these
+            case FTS_DP:
+                if (rmdir(cur->fts_path) == -1) {
+                    PLOG(ERROR) << "rmdir " << cur->fts_path;
+                }
+                break;
+            default:
+                PLOG(ERROR) << "FTS unexpected type " << cur->fts_info << " at " << cur->fts_path;
+                if (rmdir(cur->fts_path) != -1) break;
+                // FALLTHRU (for gcc, lint, pcc, etc; and following for clang)
+                FALLTHROUGH_INTENDED;
+            case FTS_F:
+            case FTS_SL:
+            case FTS_SLNONE:
+                if (unlink(cur->fts_path) == -1) {
+                    PLOG(ERROR) << "unlink " << cur->fts_path;
+                }
+                break;
+        }
+    }
+
+    if (fts_close(fts) != 0) {
+        PLOG(ERROR) << "fts_close";
+    }
+}
+
+// Look up an encryption policy  The policy (key reference
+// and encryption options) to use is read from files that were written by vold.
+static bool LookupPolicy(const std::string& ref_basename, EncryptionPolicy* policy) {
+    std::string ref_filename = std::string("/data") + ref_basename;
+    if (!android::base::ReadFileToString(ref_filename, &policy->key_raw_ref)) {
+        LOG(ERROR) << "Unable to read system policy with name " << ref_filename;
+        return false;
+    }
+
+    auto options_filename = std::string("/data") + fscrypt_key_mode;
+    std::string options_string;
+    if (!android::base::ReadFileToString(options_filename, &options_string)) {
+        LOG(ERROR) << "Cannot read encryption options string";
+        return false;
+    }
+    if (!ParseOptions(options_string, &policy->options)) {
+        LOG(ERROR) << "Invalid encryption options string: " << options_string;
+        return false;
+    }
+    return true;
+}
+
+static bool EnsurePolicyOrLog(const EncryptionPolicy& policy, const std::string& dir) {
+    if (!EnsurePolicy(policy, dir)) {
+        std::string ref_hex;
+        BytesToHex(policy.key_raw_ref, &ref_hex);
+        LOG(ERROR) << "Setting " << ref_hex << " policy on " << dir << " failed!";
+        return false;
+    }
+    return true;
+}
+
+static bool SetPolicyOn(const std::string& ref_basename, const std::string& dir) {
+    EncryptionPolicy policy;
+    if (!LookupPolicy(ref_basename, &policy)) return false;
+    if (!EnsurePolicyOrLog(policy, dir)) return false;
+    return true;
+}
+
+bool FscryptSetDirectoryPolicy(const std::string& ref_basename, FscryptAction action,
+                               const std::string& dir) {
+    if (action == FscryptAction::kNone) {
+        return true;
+    }
+    if (SetPolicyOn(ref_basename, dir) || action == FscryptAction::kAttempt) {
+        return true;
+    }
+    if (action == FscryptAction::kDeleteIfNecessary) {
+        LOG(ERROR) << "Setting policy failed, deleting: " << dir;
+        delete_dir_contents(dir);
+        return SetPolicyOn(ref_basename, dir);
+    }
+    return false;
+}
diff --git a/init/fscrypt_init_extensions.h b/init/fscrypt_init_extensions.h
new file mode 100644
index 0000000..d357bb2
--- /dev/null
+++ b/init/fscrypt_init_extensions.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+enum class FscryptAction {
+    kNone,
+    kAttempt,
+    kRequire,
+    kDeleteIfNecessary,
+};
+
+bool FscryptInstallKeyring();
+bool FscryptSetDirectoryPolicy(const std::string& ref_basename, FscryptAction action,
+                               const std::string& dir);
diff --git a/init/host_builtin_map.py b/init/host_builtin_map.py
new file mode 100755
index 0000000..6afcb17
--- /dev/null
+++ b/init/host_builtin_map.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+"""Generates the builtins map to be used by host_init_verifier.
+
+It copies the builtin function map from builtins.cpp, then replaces do_xxx() functions with the
+equivalent check_xxx() if found in check_builtins.cpp.
+
+"""
+
+import re
+import argparse
+
+parser = argparse.ArgumentParser('host_builtin_map.py')
+parser.add_argument('--builtins', required=True, help='Path to builtins.cpp')
+parser.add_argument('--check_builtins', required=True, help='Path to check_builtins.cpp')
+args = parser.parse_args()
+
+CHECK_REGEX = re.compile(r'.+check_(\S+)\(.+')
+check_functions = []
+with open(args.check_builtins) as check_file:
+  for line in check_file:
+    match = CHECK_REGEX.match(line)
+    if match:
+      check_functions.append(match.group(1))
+
+function_map = []
+with open(args.builtins) as builtins_file:
+  in_function_map = False
+  for line in builtins_file:
+    if '// Builtin-function-map start' in line:
+      in_function_map = True
+    elif '// Builtin-function-map end' in line:
+      in_function_map = False
+    elif in_function_map:
+      function_map.append(line)
+
+DO_REGEX = re.compile(r'.+do_([^\}]+).+')
+FUNCTION_REGEX = re.compile(r'(do_[^\}]+)')
+for line in function_map:
+  match = DO_REGEX.match(line)
+  if match:
+    if match.group(1) in check_functions:
+      print line.replace('do_', 'check_'),
+    else:
+      print FUNCTION_REGEX.sub('check_stub', line),
+  else:
+    print line,
diff --git a/init/host_import_parser.cpp b/init/host_import_parser.cpp
index 93e363f..aa80199 100644
--- a/init/host_import_parser.cpp
+++ b/init/host_import_parser.cpp
@@ -23,16 +23,16 @@
 namespace android {
 namespace init {
 
-Result<Success> HostImportParser::ParseSection(std::vector<std::string>&& args, const std::string&,
-                                               int) {
+Result<void> HostImportParser::ParseSection(std::vector<std::string>&& args, const std::string&,
+                                            int) {
     if (args.size() != 2) {
         return Error() << "single argument needed for import\n";
     }
 
-    return Success();
+    return {};
 }
 
-Result<Success> HostImportParser::ParseLineSection(std::vector<std::string>&&, int) {
+Result<void> HostImportParser::ParseLineSection(std::vector<std::string>&&, int) {
     return Error() << "Unexpected line found after import statement";
 }
 
diff --git a/init/host_import_parser.h b/init/host_import_parser.h
index 52b8891..d6f7286 100644
--- a/init/host_import_parser.h
+++ b/init/host_import_parser.h
@@ -27,8 +27,8 @@
 class HostImportParser : public SectionParser {
   public:
     HostImportParser() {}
-    Result<Success> ParseSection(std::vector<std::string>&& args, const std::string&, int) override;
-    Result<Success> ParseLineSection(std::vector<std::string>&&, int) override;
+    Result<void> ParseSection(std::vector<std::string>&& args, const std::string&, int) override;
+    Result<void> ParseLineSection(std::vector<std::string>&&, int) override;
 };
 
 }  // namespace init
diff --git a/init/host_init_stubs.cpp b/init/host_init_stubs.cpp
deleted file mode 100644
index b85e54a..0000000
--- a/init/host_init_stubs.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "host_init_stubs.h"
-
-#include <android-base/properties.h>
-
-// unistd.h
-int setgroups(size_t __size, const gid_t* __list) {
-    return 0;
-}
-
-namespace android {
-namespace init {
-
-// init.h
-std::string default_console = "/dev/console";
-
-// property_service.h
-bool CanReadProperty(const std::string& source_context, const std::string& name) {
-    return true;
-}
-uint32_t SetProperty(const std::string& key, const std::string& value) {
-    android::base::SetProperty(key, value);
-    return 0;
-}
-uint32_t (*property_set)(const std::string& name, const std::string& value) = SetProperty;
-uint32_t HandlePropertySet(const std::string&, const std::string&, const std::string&, const ucred&,
-                           std::string*) {
-    return 0;
-}
-
-// selinux.h
-int SelinuxGetVendorAndroidVersion() {
-    return 10000;
-}
-void SelabelInitialize() {}
-
-bool SelabelLookupFileContext(const std::string& key, int type, std::string* result) {
-    return false;
-}
-
-}  // namespace init
-}  // namespace android
diff --git a/init/host_init_stubs.h b/init/host_init_stubs.h
index f6e9676..caa8f8d 100644
--- a/init/host_init_stubs.h
+++ b/init/host_init_stubs.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_HOST_INIT_STUBS_H
-#define _INIT_HOST_INIT_STUBS_H
+#pragma once
 
 #include <stddef.h>
 #include <sys/socket.h>
@@ -23,39 +22,40 @@
 
 #include <string>
 
+#include <android-base/properties.h>
+
 // android/api-level.h
 #define __ANDROID_API_P__ 28
+#define __ANDROID_API_Q__ 29
+#define __ANDROID_API_R__ 30
 
 // sys/system_properties.h
 #define PROP_VALUE_MAX 92
 
-// unistd.h
-int setgroups(size_t __size, const gid_t* __list);
-
 namespace android {
 namespace init {
 
-// init.h
-extern std::string default_console;
-
 // property_service.h
-bool CanReadProperty(const std::string& source_context, const std::string& name);
-extern uint32_t (*property_set)(const std::string& name, const std::string& value);
-uint32_t HandlePropertySet(const std::string& name, const std::string& value,
-                           const std::string& source_context, const ucred& cr, std::string* error);
+inline bool CanReadProperty(const std::string&, const std::string&) {
+    return true;
+}
 
 // reboot_utils.h
 inline void SetFatalRebootTarget() {}
-inline void __attribute__((noreturn)) InitFatalReboot() {
+inline void __attribute__((noreturn)) InitFatalReboot(int signal_number) {
     abort();
 }
 
+// selabel.h
+inline void SelabelInitialize() {}
+inline bool SelabelLookupFileContext(const std::string&, int, std::string*) {
+    return false;
+}
+
 // selinux.h
-int SelinuxGetVendorAndroidVersion();
-void SelabelInitialize();
-bool SelabelLookupFileContext(const std::string& key, int type, std::string* result);
+inline int SelinuxGetVendorAndroidVersion() {
+    return 10000;
+}
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/host_init_verifier.cpp b/init/host_init_verifier.cpp
index 8407729..0bd4df4 100644
--- a/init/host_init_verifier.cpp
+++ b/init/host_init_verifier.cpp
@@ -14,12 +14,17 @@
 // limitations under the License.
 //
 
+#include "host_init_verifier.h"
+
 #include <errno.h>
+#include <getopt.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
 
+#include <fstream>
 #include <iostream>
+#include <iterator>
 #include <string>
 #include <vector>
 
@@ -27,15 +32,21 @@
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
 #include <android-base/strings.h>
+#include <hidl/metadata.h>
+#include <property_info_serializer/property_info_serializer.h>
 
 #include "action.h"
 #include "action_manager.h"
 #include "action_parser.h"
+#include "check_builtins.h"
 #include "host_import_parser.h"
 #include "host_init_stubs.h"
+#include "interface_utils.h"
 #include "parser.h"
 #include "result.h"
 #include "service.h"
+#include "service_list.h"
+#include "service_parser.h"
 
 #define EXCLUDE_FS_CONFIG_STRUCTURES
 #include "generated_android_ids.h"
@@ -45,10 +56,14 @@
 using android::base::ParseInt;
 using android::base::ReadFileToString;
 using android::base::Split;
+using android::properties::BuildTrie;
+using android::properties::ParsePropertyInfoFile;
+using android::properties::PropertyInfoArea;
+using android::properties::PropertyInfoEntry;
 
-static std::string passwd_file;
+static std::vector<std::string> passwd_files;
 
-static std::vector<std::pair<std::string, int>> GetVendorPasswd() {
+static std::vector<std::pair<std::string, int>> GetVendorPasswd(const std::string& passwd_file) {
     std::string passwd;
     if (!ReadFileToString(passwd_file, &passwd)) {
         return {};
@@ -70,6 +85,16 @@
     return result;
 }
 
+static std::vector<std::pair<std::string, int>> GetVendorPasswd() {
+    std::vector<std::pair<std::string, int>> result;
+    for (const auto& passwd_file : passwd_files) {
+        auto individual_result = GetVendorPasswd(passwd_file);
+        std::move(individual_result.begin(), individual_result.end(),
+                  std::back_insert_iterator(result));
+    }
+    return result;
+}
+
 passwd* getpwnam(const char* login) {  // NOLINT: implementing bad function.
     // This isn't thread safe, but that's okay for our purposes.
     static char static_name[32] = "";
@@ -118,41 +143,145 @@
 namespace android {
 namespace init {
 
-static Result<Success> do_stub(const BuiltinArguments& args) {
-    return Success();
+static Result<void> check_stub(const BuiltinArguments& args) {
+    return {};
 }
 
 #include "generated_stub_builtin_function_map.h"
 
+void PrintUsage() {
+    std::cout << "usage: host_init_verifier [options] <init rc file>\n"
+                 "\n"
+                 "Tests an init script for correctness\n"
+                 "\n"
+                 "-p FILE\tSearch this passwd file for users and groups\n"
+                 "--property_contexts=FILE\t Use this file for property_contexts\n"
+              << std::endl;
+}
+
+Result<InterfaceInheritanceHierarchyMap> ReadInterfaceInheritanceHierarchy() {
+    InterfaceInheritanceHierarchyMap result;
+    for (const HidlInterfaceMetadata& iface : HidlInterfaceMetadata::all()) {
+        std::set<FQName> inherited_interfaces;
+        for (const std::string& intf : iface.inherited) {
+            FQName fqname;
+            if (!fqname.setTo(intf)) {
+                return Error() << "Unable to parse interface '" << intf << "'";
+            }
+            inherited_interfaces.insert(fqname);
+        }
+        FQName fqname;
+        if (!fqname.setTo(iface.name)) {
+            return Error() << "Unable to parse interface '" << iface.name << "'";
+        }
+        result[fqname] = inherited_interfaces;
+    }
+
+    return result;
+}
+
+const PropertyInfoArea* property_info_area;
+
+void HandlePropertyContexts(const std::string& filename,
+                            std::vector<PropertyInfoEntry>* property_infos) {
+    auto file_contents = std::string();
+    if (!ReadFileToString(filename, &file_contents)) {
+        PLOG(ERROR) << "Could not read properties from '" << filename << "'";
+        exit(EXIT_FAILURE);
+    }
+
+    auto errors = std::vector<std::string>{};
+    ParsePropertyInfoFile(file_contents, true, property_infos, &errors);
+    for (const auto& error : errors) {
+        LOG(ERROR) << "Could not read line from '" << filename << "': " << error;
+    }
+    if (!errors.empty()) {
+        exit(EXIT_FAILURE);
+    }
+}
+
 int main(int argc, char** argv) {
     android::base::InitLogging(argv, &android::base::StdioLogger);
     android::base::SetMinimumLogSeverity(android::base::ERROR);
 
-    if (argc != 2 && argc != 3) {
-        LOG(ERROR) << "Usage: " << argv[0] << " <init rc file> [passwd file]";
+    auto property_infos = std::vector<PropertyInfoEntry>();
+
+    while (true) {
+        static const char kPropertyContexts[] = "property-contexts=";
+        static const struct option long_options[] = {
+                {"help", no_argument, nullptr, 'h'},
+                {kPropertyContexts, required_argument, nullptr, 0},
+                {nullptr, 0, nullptr, 0},
+        };
+
+        int option_index;
+        int arg = getopt_long(argc, argv, "p:", long_options, &option_index);
+
+        if (arg == -1) {
+            break;
+        }
+
+        switch (arg) {
+            case 0:
+                if (long_options[option_index].name == kPropertyContexts) {
+                    HandlePropertyContexts(optarg, &property_infos);
+                }
+                break;
+            case 'h':
+                PrintUsage();
+                return EXIT_FAILURE;
+            case 'p':
+                passwd_files.emplace_back(optarg);
+                break;
+            default:
+                std::cerr << "getprop: getopt returned invalid result: " << arg << std::endl;
+                return EXIT_FAILURE;
+        }
+    }
+
+    argc -= optind;
+    argv += optind;
+
+    if (argc != 1) {
+        PrintUsage();
         return EXIT_FAILURE;
     }
 
-    if (argc == 3) {
-        passwd_file = argv[2];
+    auto interface_inheritance_hierarchy_map = ReadInterfaceInheritanceHierarchy();
+    if (!interface_inheritance_hierarchy_map.ok()) {
+        LOG(ERROR) << interface_inheritance_hierarchy_map.error();
+        return EXIT_FAILURE;
+    }
+    SetKnownInterfaces(*interface_inheritance_hierarchy_map);
+
+    std::string serialized_contexts;
+    std::string trie_error;
+    if (!BuildTrie(property_infos, "u:object_r:default_prop:s0", "string", &serialized_contexts,
+                   &trie_error)) {
+        LOG(ERROR) << "Unable to serialize property contexts: " << trie_error;
+        return EXIT_FAILURE;
     }
 
-    const BuiltinFunctionMap function_map;
+    property_info_area = reinterpret_cast<const PropertyInfoArea*>(serialized_contexts.c_str());
+
+    const BuiltinFunctionMap& function_map = GetBuiltinFunctionMap();
     Action::set_function_map(&function_map);
     ActionManager& am = ActionManager::GetInstance();
     ServiceList& sl = ServiceList::GetInstance();
     Parser parser;
-    parser.AddSectionParser("service", std::make_unique<ServiceParser>(&sl, nullptr));
+    parser.AddSectionParser("service", std::make_unique<ServiceParser>(
+                                               &sl, nullptr, *interface_inheritance_hierarchy_map));
     parser.AddSectionParser("on", std::make_unique<ActionParser>(&am, nullptr));
     parser.AddSectionParser("import", std::make_unique<HostImportParser>());
 
-    if (!parser.ParseConfigFileInsecure(argv[1])) {
-        LOG(ERROR) << "Failed to open init rc script '" << argv[1] << "'";
+    if (!parser.ParseConfigFileInsecure(*argv)) {
+        LOG(ERROR) << "Failed to open init rc script '" << *argv << "'";
         return EXIT_FAILURE;
     }
-    if (parser.parse_error_count() > 0) {
-        LOG(ERROR) << "Failed to parse init script '" << argv[1] << "' with "
-                   << parser.parse_error_count() << " errors";
+    size_t failures = parser.parse_error_count() + am.CheckAllCommands() + sl.CheckAllCommands();
+    if (failures > 0) {
+        LOG(ERROR) << "Failed to parse init script '" << *argv << "' with " << failures
+                   << " errors";
         return EXIT_FAILURE;
     }
     return EXIT_SUCCESS;
diff --git a/init/host_init_verifier.h b/init/host_init_verifier.h
new file mode 100644
index 0000000..5d24f2a
--- /dev/null
+++ b/init/host_init_verifier.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <property_info_parser/property_info_parser.h>
+
+namespace android {
+namespace init {
+
+extern const android::properties::PropertyInfoArea* property_info_area;
+
+}  // namespace init
+}  // namespace android
diff --git a/init/import_parser.cpp b/init/import_parser.cpp
index fb3185e..e4b25ca 100644
--- a/init/import_parser.cpp
+++ b/init/import_parser.cpp
@@ -23,25 +23,24 @@
 namespace android {
 namespace init {
 
-Result<Success> ImportParser::ParseSection(std::vector<std::string>&& args,
-                                           const std::string& filename, int line) {
+Result<void> ImportParser::ParseSection(std::vector<std::string>&& args,
+                                        const std::string& filename, int line) {
     if (args.size() != 2) {
         return Error() << "single argument needed for import\n";
     }
 
-    std::string conf_file;
-    bool ret = expand_props(args[1], &conf_file);
-    if (!ret) {
-        return Error() << "error while expanding import";
+    auto conf_file = ExpandProps(args[1]);
+    if (!conf_file.ok()) {
+        return Error() << "Could not expand import: " << conf_file.error();
     }
 
-    LOG(INFO) << "Added '" << conf_file << "' to import list";
+    LOG(INFO) << "Added '" << *conf_file << "' to import list";
     if (filename_.empty()) filename_ = filename;
-    imports_.emplace_back(std::move(conf_file), line);
-    return Success();
+    imports_.emplace_back(std::move(*conf_file), line);
+    return {};
 }
 
-Result<Success> ImportParser::ParseLineSection(std::vector<std::string>&&, int) {
+Result<void> ImportParser::ParseLineSection(std::vector<std::string>&&, int) {
     return Error() << "Unexpected line found after import statement";
 }
 
diff --git a/init/import_parser.h b/init/import_parser.h
index 7bc72e6..5bf9c6c 100644
--- a/init/import_parser.h
+++ b/init/import_parser.h
@@ -28,9 +28,9 @@
 class ImportParser : public SectionParser {
   public:
     ImportParser(Parser* parser) : parser_(parser) {}
-    Result<Success> ParseSection(std::vector<std::string>&& args, const std::string& filename,
-                                 int line) override;
-    Result<Success> ParseLineSection(std::vector<std::string>&&, int) override;
+    Result<void> ParseSection(std::vector<std::string>&& args, const std::string& filename,
+                              int line) override;
+    Result<void> ParseLineSection(std::vector<std::string>&&, int) override;
     void EndFile() override;
 
   private:
diff --git a/init/init.cpp b/init/init.cpp
index 6b03bc9..29859c5 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -19,22 +19,30 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <pthread.h>
-#include <seccomp_policy.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/eventfd.h>
 #include <sys/mount.h>
 #include <sys/signalfd.h>
 #include <sys/types.h>
 #include <unistd.h>
 
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
+
+#include <functional>
 #include <map>
 #include <memory>
+#include <mutex>
 #include <optional>
+#include <thread>
+#include <vector>
 
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <android-base/parseint.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
@@ -47,32 +55,38 @@
 #include <processgroup/setup.h>
 #include <selinux/android.h>
 
-#ifndef RECOVERY
-#include <binder/ProcessState.h>
-#endif
-
 #include "action_parser.h"
-#include "boringssl_self_test.h"
+#include "builtins.h"
 #include "epoll.h"
+#include "first_stage_init.h"
 #include "first_stage_mount.h"
 #include "import_parser.h"
 #include "keychords.h"
+#include "lmkd_service.h"
 #include "mount_handler.h"
 #include "mount_namespace.h"
 #include "property_service.h"
+#include "proto_utils.h"
 #include "reboot.h"
 #include "reboot_utils.h"
 #include "security.h"
+#include "selabel.h"
 #include "selinux.h"
+#include "service.h"
+#include "service_parser.h"
 #include "sigchld_handler.h"
+#include "subcontext.h"
+#include "system/core/init/property_service.pb.h"
 #include "util.h"
 
 using namespace std::chrono_literals;
 using namespace std::string_literals;
 
 using android::base::boot_clock;
+using android::base::ConsumePrefix;
 using android::base::GetProperty;
 using android::base::ReadFileToString;
+using android::base::SetProperty;
 using android::base::StringPrintf;
 using android::base::Timer;
 using android::base::Trim;
@@ -83,23 +97,151 @@
 
 static int property_triggers_enabled = 0;
 
-static char qemu[32];
-
-std::string default_console = "/dev/console";
-
 static int signal_fd = -1;
+static int property_fd = -1;
 
-static std::unique_ptr<Timer> waiting_for_prop(nullptr);
-static std::string wait_prop_name;
-static std::string wait_prop_value;
-static bool shutting_down;
-static std::string shutdown_command;
-static bool do_shutdown = false;
-static bool load_debug_prop = false;
+struct PendingControlMessage {
+    std::string message;
+    std::string name;
+    pid_t pid;
+    int fd;
+};
+static std::mutex pending_control_messages_lock;
+static std::queue<PendingControlMessage> pending_control_messages;
 
-std::vector<std::string> late_import_paths;
+// Init epolls various FDs to wait for various inputs.  It previously waited on property changes
+// with a blocking socket that contained the information related to the change, however, it was easy
+// to fill that socket and deadlock the system.  Now we use locks to handle the property changes
+// directly in the property thread, however we still must wake the epoll to inform init that there
+// is a change to process, so we use this FD.  It is non-blocking, since we do not care how many
+// times WakeMainInitThread() is called, only that the epoll will wake.
+static int wake_main_thread_fd = -1;
+static void InstallInitNotifier(Epoll* epoll) {
+    wake_main_thread_fd = eventfd(0, EFD_CLOEXEC);
+    if (wake_main_thread_fd == -1) {
+        PLOG(FATAL) << "Failed to create eventfd for waking init";
+    }
+    auto clear_eventfd = [] {
+        uint64_t counter;
+        TEMP_FAILURE_RETRY(read(wake_main_thread_fd, &counter, sizeof(counter)));
+    };
 
-static std::vector<Subcontext>* subcontexts;
+    if (auto result = epoll->RegisterHandler(wake_main_thread_fd, clear_eventfd); !result.ok()) {
+        LOG(FATAL) << result.error();
+    }
+}
+
+static void WakeMainInitThread() {
+    uint64_t counter = 1;
+    TEMP_FAILURE_RETRY(write(wake_main_thread_fd, &counter, sizeof(counter)));
+}
+
+static class PropWaiterState {
+  public:
+    bool StartWaiting(const char* name, const char* value) {
+        auto lock = std::lock_guard{lock_};
+        if (waiting_for_prop_) {
+            return false;
+        }
+        if (GetProperty(name, "") != value) {
+            // Current property value is not equal to expected value
+            wait_prop_name_ = name;
+            wait_prop_value_ = value;
+            waiting_for_prop_.reset(new Timer());
+        } else {
+            LOG(INFO) << "start_waiting_for_property(\"" << name << "\", \"" << value
+                      << "\"): already set";
+        }
+        return true;
+    }
+
+    void ResetWaitForProp() {
+        auto lock = std::lock_guard{lock_};
+        ResetWaitForPropLocked();
+    }
+
+    void CheckAndResetWait(const std::string& name, const std::string& value) {
+        auto lock = std::lock_guard{lock_};
+        // We always record how long init waited for ueventd to tell us cold boot finished.
+        // If we aren't waiting on this property, it means that ueventd finished before we even
+        // started to wait.
+        if (name == kColdBootDoneProp) {
+            auto time_waited = waiting_for_prop_ ? waiting_for_prop_->duration().count() : 0;
+            std::thread([time_waited] {
+                SetProperty("ro.boottime.init.cold_boot_wait", std::to_string(time_waited));
+            }).detach();
+        }
+
+        if (waiting_for_prop_) {
+            if (wait_prop_name_ == name && wait_prop_value_ == value) {
+                LOG(INFO) << "Wait for property '" << wait_prop_name_ << "=" << wait_prop_value_
+                          << "' took " << *waiting_for_prop_;
+                ResetWaitForPropLocked();
+                WakeMainInitThread();
+            }
+        }
+    }
+
+    // This is not thread safe because it releases the lock when it returns, so the waiting state
+    // may change.  However, we only use this function to prevent running commands in the main
+    // thread loop when we are waiting, so we do not care about false positives; only false
+    // negatives.  StartWaiting() and this function are always called from the same thread, so false
+    // negatives are not possible and therefore we're okay.
+    bool MightBeWaiting() {
+        auto lock = std::lock_guard{lock_};
+        return static_cast<bool>(waiting_for_prop_);
+    }
+
+  private:
+    void ResetWaitForPropLocked() {
+        wait_prop_name_.clear();
+        wait_prop_value_.clear();
+        waiting_for_prop_.reset();
+    }
+
+    std::mutex lock_;
+    std::unique_ptr<Timer> waiting_for_prop_{nullptr};
+    std::string wait_prop_name_;
+    std::string wait_prop_value_;
+
+} prop_waiter_state;
+
+bool start_waiting_for_property(const char* name, const char* value) {
+    return prop_waiter_state.StartWaiting(name, value);
+}
+
+void ResetWaitForProp() {
+    prop_waiter_state.ResetWaitForProp();
+}
+
+static class ShutdownState {
+  public:
+    void TriggerShutdown(const std::string& command) {
+        // We can't call HandlePowerctlMessage() directly in this function,
+        // because it modifies the contents of the action queue, which can cause the action queue
+        // to get into a bad state if this function is called from a command being executed by the
+        // action queue.  Instead we set this flag and ensure that shutdown happens before the next
+        // command is run in the main init loop.
+        auto lock = std::lock_guard{shutdown_command_lock_};
+        shutdown_command_ = command;
+        do_shutdown_ = true;
+        WakeMainInitThread();
+    }
+
+    std::optional<std::string> CheckShutdown() {
+        auto lock = std::lock_guard{shutdown_command_lock_};
+        if (do_shutdown_ && !IsShuttingDown()) {
+            do_shutdown_ = false;
+            return shutdown_command_;
+        }
+        return {};
+    }
+
+  private:
+    std::mutex shutdown_command_lock_;
+    std::string shutdown_command_;
+    bool do_shutdown_ = false;
+} shutdown_state;
 
 void DumpState() {
     ServiceList::GetInstance().DumpState();
@@ -109,18 +251,21 @@
 Parser CreateParser(ActionManager& action_manager, ServiceList& service_list) {
     Parser parser;
 
-    parser.AddSectionParser("service", std::make_unique<ServiceParser>(&service_list, subcontexts));
-    parser.AddSectionParser("on", std::make_unique<ActionParser>(&action_manager, subcontexts));
+    parser.AddSectionParser("service", std::make_unique<ServiceParser>(
+                                               &service_list, GetSubcontext(), std::nullopt));
+    parser.AddSectionParser("on", std::make_unique<ActionParser>(&action_manager, GetSubcontext()));
     parser.AddSectionParser("import", std::make_unique<ImportParser>(&parser));
 
     return parser;
 }
 
 // parser that only accepts new services
-Parser CreateServiceOnlyParser(ServiceList& service_list) {
+Parser CreateServiceOnlyParser(ServiceList& service_list, bool from_apex) {
     Parser parser;
 
-    parser.AddSectionParser("service", std::make_unique<ServiceParser>(&service_list, subcontexts));
+    parser.AddSectionParser(
+            "service", std::make_unique<ServiceParser>(&service_list, GetSubcontext(), std::nullopt,
+                                                       from_apex));
     return parser;
 }
 
@@ -129,16 +274,16 @@
 
     std::string bootscript = GetProperty("ro.boot.init_rc", "");
     if (bootscript.empty()) {
-        parser.ParseConfig("/init.rc");
+        parser.ParseConfig("/system/etc/init/hw/init.rc");
         if (!parser.ParseConfig("/system/etc/init")) {
             late_import_paths.emplace_back("/system/etc/init");
         }
+        // late_import is available only in Q and earlier release. As we don't
+        // have system_ext in those versions, skip late_import for system_ext.
+        parser.ParseConfig("/system_ext/etc/init");
         if (!parser.ParseConfig("/product/etc/init")) {
             late_import_paths.emplace_back("/product/etc/init");
         }
-        if (!parser.ParseConfig("/product_services/etc/init")) {
-            late_import_paths.emplace_back("/product_services/etc/init");
-        }
         if (!parser.ParseConfig("/odm/etc/init")) {
             late_import_paths.emplace_back("/odm/etc/init");
         }
@@ -150,30 +295,7 @@
     }
 }
 
-bool start_waiting_for_property(const char *name, const char *value)
-{
-    if (waiting_for_prop) {
-        return false;
-    }
-    if (GetProperty(name, "") != value) {
-        // Current property value is not equal to expected value
-        wait_prop_name = name;
-        wait_prop_value = value;
-        waiting_for_prop.reset(new Timer());
-    } else {
-        LOG(INFO) << "start_waiting_for_property(\""
-                  << name << "\", \"" << value << "\"): already set";
-    }
-    return true;
-}
-
-void ResetWaitForProp() {
-    wait_prop_name.clear();
-    wait_prop_value.clear();
-    waiting_for_prop.reset();
-}
-
-void property_changed(const std::string& name, const std::string& value) {
+void PropertyChanged(const std::string& name, const std::string& value) {
     // If the property is sys.powerctl, we bypass the event queue and immediately handle it.
     // This is to ensure that init will always and immediately shutdown/reboot, regardless of
     // if there are other pending events to process or if init is waiting on an exec service or
@@ -181,27 +303,15 @@
     // In non-thermal-shutdown case, 'shutdown' trigger will be fired to let device specific
     // commands to be executed.
     if (name == "sys.powerctl") {
-        // Despite the above comment, we can't call HandlePowerctlMessage() in this function,
-        // because it modifies the contents of the action queue, which can cause the action queue
-        // to get into a bad state if this function is called from a command being executed by the
-        // action queue.  Instead we set this flag and ensure that shutdown happens before the next
-        // command is run in the main init loop.
-        // TODO: once property service is removed from init, this will never happen from a builtin,
-        // but rather from a callback from the property service socket, in which case this hack can
-        // go away.
-        shutdown_command = value;
-        do_shutdown = true;
+        trigger_shutdown(value);
     }
 
-    if (property_triggers_enabled) ActionManager::GetInstance().QueuePropertyChange(name, value);
-
-    if (waiting_for_prop) {
-        if (wait_prop_name == name && wait_prop_value == value) {
-            LOG(INFO) << "Wait for property '" << wait_prop_name << "=" << wait_prop_value
-                      << "' took " << *waiting_for_prop;
-            ResetWaitForProp();
-        }
+    if (property_triggers_enabled) {
+        ActionManager::GetInstance().QueuePropertyChange(name, value);
+        WakeMainInitThread();
     }
+
+    prop_waiter_state.CheckAndResetWait(name, value);
 }
 
 static std::optional<boot_clock::time_point> HandleProcessActions() {
@@ -222,7 +332,7 @@
 
         auto restart_time = s->time_started() + s->restart_period();
         if (boot_clock::now() > restart_time) {
-            if (auto result = s->Start(); !result) {
+            if (auto result = s->Start(); !result.ok()) {
                 LOG(ERROR) << "Could not restart process '" << s->name() << "': " << result.error();
             }
         } else {
@@ -234,18 +344,18 @@
     return next_process_action_time;
 }
 
-static Result<Success> DoControlStart(Service* service) {
+static Result<void> DoControlStart(Service* service) {
     return service->Start();
 }
 
-static Result<Success> DoControlStop(Service* service) {
+static Result<void> DoControlStop(Service* service) {
     service->Stop();
-    return Success();
+    return {};
 }
 
-static Result<Success> DoControlRestart(Service* service) {
+static Result<void> DoControlRestart(Service* service) {
     service->Restart();
-    return Success();
+    return {};
 }
 
 enum class ControlTarget {
@@ -253,40 +363,27 @@
     INTERFACE,  // action gets called for every service that holds this interface
 };
 
-struct ControlMessageFunction {
-    ControlTarget target;
-    std::function<Result<Success>(Service*)> action;
-};
+using ControlMessageFunction = std::function<Result<void>(Service*)>;
 
-static const std::map<std::string, ControlMessageFunction>& get_control_message_map() {
+static const std::map<std::string, ControlMessageFunction, std::less<>>& GetControlMessageMap() {
     // clang-format off
-    static const std::map<std::string, ControlMessageFunction> control_message_functions = {
-        {"sigstop_on",        {ControlTarget::SERVICE,
-                               [](auto* service) { service->set_sigstop(true); return Success(); }}},
-        {"sigstop_off",       {ControlTarget::SERVICE,
-                               [](auto* service) { service->set_sigstop(false); return Success(); }}},
-        {"start",             {ControlTarget::SERVICE,   DoControlStart}},
-        {"stop",              {ControlTarget::SERVICE,   DoControlStop}},
-        {"restart",           {ControlTarget::SERVICE,   DoControlRestart}},
-        {"interface_start",   {ControlTarget::INTERFACE, DoControlStart}},
-        {"interface_stop",    {ControlTarget::INTERFACE, DoControlStop}},
-        {"interface_restart", {ControlTarget::INTERFACE, DoControlRestart}},
+    static const std::map<std::string, ControlMessageFunction, std::less<>> control_message_functions = {
+        {"sigstop_on",        [](auto* service) { service->set_sigstop(true); return Result<void>{}; }},
+        {"sigstop_off",       [](auto* service) { service->set_sigstop(false); return Result<void>{}; }},
+        {"oneshot_on",        [](auto* service) { service->set_oneshot(true); return Result<void>{}; }},
+        {"oneshot_off",       [](auto* service) { service->set_oneshot(false); return Result<void>{}; }},
+        {"start",             DoControlStart},
+        {"stop",              DoControlStop},
+        {"restart",           DoControlRestart},
     };
     // clang-format on
 
     return control_message_functions;
 }
 
-void HandleControlMessage(const std::string& msg, const std::string& name, pid_t pid) {
-    const auto& map = get_control_message_map();
-    const auto it = map.find(msg);
-
-    if (it == map.end()) {
-        LOG(ERROR) << "Unknown control msg '" << msg << "'";
-        return;
-    }
-
-    std::string cmdline_path = StringPrintf("proc/%d/cmdline", pid);
+static bool HandleControlMessage(std::string_view message, const std::string& name,
+                                 pid_t from_pid) {
+    std::string cmdline_path = StringPrintf("proc/%d/cmdline", from_pid);
     std::string process_cmdline;
     if (ReadFileToString(cmdline_path, &process_cmdline)) {
         std::replace(process_cmdline.begin(), process_cmdline.end(), '\0', ' ');
@@ -295,66 +392,87 @@
         process_cmdline = "unknown process";
     }
 
-    LOG(INFO) << "Received control message '" << msg << "' for '" << name << "' from pid: " << pid
-              << " (" << process_cmdline << ")";
-
-    const ControlMessageFunction& function = it->second;
-
-    Service* svc = nullptr;
-
-    switch (function.target) {
-        case ControlTarget::SERVICE:
-            svc = ServiceList::GetInstance().FindService(name);
-            break;
-        case ControlTarget::INTERFACE:
-            svc = ServiceList::GetInstance().FindInterface(name);
-            break;
-        default:
-            LOG(ERROR) << "Invalid function target from static map key '" << msg << "': "
-                       << static_cast<std::underlying_type<ControlTarget>::type>(function.target);
-            return;
+    Service* service = nullptr;
+    auto action = message;
+    if (ConsumePrefix(&action, "interface_")) {
+        service = ServiceList::GetInstance().FindInterface(name);
+    } else {
+        service = ServiceList::GetInstance().FindService(name);
     }
 
-    if (svc == nullptr) {
-        LOG(ERROR) << "Could not find '" << name << "' for ctl." << msg;
-        return;
+    if (service == nullptr) {
+        LOG(ERROR) << "Control message: Could not find '" << name << "' for ctl." << message
+                   << " from pid: " << from_pid << " (" << process_cmdline << ")";
+        return false;
     }
 
-    if (auto result = function.action(svc); !result) {
-        LOG(ERROR) << "Could not ctl." << msg << " for '" << name << "': " << result.error();
+    const auto& map = GetControlMessageMap();
+    const auto it = map.find(action);
+    if (it == map.end()) {
+        LOG(ERROR) << "Unknown control msg '" << message << "'";
+        return false;
+    }
+    const auto& function = it->second;
+
+    if (auto result = function(service); !result.ok()) {
+        LOG(ERROR) << "Control message: Could not ctl." << message << " for '" << name
+                   << "' from pid: " << from_pid << " (" << process_cmdline
+                   << "): " << result.error();
+        return false;
+    }
+
+    LOG(INFO) << "Control message: Processed ctl." << message << " for '" << name
+              << "' from pid: " << from_pid << " (" << process_cmdline << ")";
+    return true;
+}
+
+bool QueueControlMessage(const std::string& message, const std::string& name, pid_t pid, int fd) {
+    auto lock = std::lock_guard{pending_control_messages_lock};
+    if (pending_control_messages.size() > 100) {
+        LOG(ERROR) << "Too many pending control messages, dropped '" << message << "' for '" << name
+                   << "' from pid: " << pid;
+        return false;
+    }
+    pending_control_messages.push({message, name, pid, fd});
+    WakeMainInitThread();
+    return true;
+}
+
+static void HandleControlMessages() {
+    auto lock = std::unique_lock{pending_control_messages_lock};
+    // Init historically would only execute handle one property message, including control messages
+    // in each iteration of its main loop.  We retain this behavior here to prevent starvation of
+    // other actions in the main loop.
+    if (!pending_control_messages.empty()) {
+        auto control_message = pending_control_messages.front();
+        pending_control_messages.pop();
+        lock.unlock();
+
+        bool success = HandleControlMessage(control_message.message, control_message.name,
+                                            control_message.pid);
+
+        uint32_t response = success ? PROP_SUCCESS : PROP_ERROR_HANDLE_CONTROL_MESSAGE;
+        if (control_message.fd != -1) {
+            TEMP_FAILURE_RETRY(send(control_message.fd, &response, sizeof(response), 0));
+            close(control_message.fd);
+        }
+        lock.lock();
+    }
+    // If we still have items to process, make sure we wake back up to do so.
+    if (!pending_control_messages.empty()) {
+        WakeMainInitThread();
     }
 }
 
-static Result<Success> wait_for_coldboot_done_action(const BuiltinArguments& args) {
-    Timer t;
-
-    LOG(VERBOSE) << "Waiting for " COLDBOOT_DONE "...";
-
-    // Historically we had a 1s timeout here because we weren't otherwise
-    // tracking boot time, and many OEMs made their sepolicy regular
-    // expressions too expensive (http://b/19899875).
-
-    // Now we're tracking boot time, just log the time taken to a system
-    // property. We still panic if it takes more than a minute though,
-    // because any build that slow isn't likely to boot at all, and we'd
-    // rather any test lab devices fail back to the bootloader.
-    if (wait_for_file(COLDBOOT_DONE, 60s) < 0) {
-        LOG(FATAL) << "Timed out waiting for " COLDBOOT_DONE;
+static Result<void> wait_for_coldboot_done_action(const BuiltinArguments& args) {
+    if (!prop_waiter_state.StartWaiting(kColdBootDoneProp, "true")) {
+        LOG(FATAL) << "Could not wait for '" << kColdBootDoneProp << "'";
     }
 
-    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration().count()));
-    return Success();
+    return {};
 }
 
-static Result<Success> console_init_action(const BuiltinArguments& args) {
-    std::string console = GetProperty("ro.boot.console", "");
-    if (!console.empty()) {
-        default_console = "/dev/" + console;
-    }
-    return Success();
-}
-
-static Result<Success> SetupCgroupsAction(const BuiltinArguments&) {
+static Result<void> SetupCgroupsAction(const BuiltinArguments&) {
     // Have to create <CGROUPS_RC_DIR> using make_dir function
     // for appropriate sepolicy to be set for it
     make_dir(android::base::Dirname(CGROUPS_RC_PATH), 0711);
@@ -362,124 +480,38 @@
         return ErrnoError() << "Failed to setup cgroups";
     }
 
-    return Success();
-}
-
-static void import_kernel_nv(const std::string& key, const std::string& value, bool for_emulator) {
-    if (key.empty()) return;
-
-    if (for_emulator) {
-        // In the emulator, export any kernel option with the "ro.kernel." prefix.
-        property_set("ro.kernel." + key, value);
-        return;
-    }
-
-    if (key == "qemu") {
-        strlcpy(qemu, value.c_str(), sizeof(qemu));
-    } else if (android::base::StartsWith(key, "androidboot.")) {
-        property_set("ro.boot." + key.substr(12), value);
-    }
+    return {};
 }
 
 static void export_oem_lock_status() {
     if (!android::base::GetBoolProperty("ro.oem_unlock_supported", false)) {
         return;
     }
-    import_kernel_cmdline(
-            false, [](const std::string& key, const std::string& value, bool in_qemu) {
-                if (key == "androidboot.verifiedbootstate") {
-                    property_set("ro.boot.flash.locked", value == "orange" ? "0" : "1");
-                }
-            });
-}
-
-static void export_kernel_boot_props() {
-    constexpr const char* UNSET = "";
-    struct {
-        const char *src_prop;
-        const char *dst_prop;
-        const char *default_value;
-    } prop_map[] = {
-        { "ro.boot.serialno",   "ro.serialno",   UNSET, },
-        { "ro.boot.mode",       "ro.bootmode",   "unknown", },
-        { "ro.boot.baseband",   "ro.baseband",   "unknown", },
-        { "ro.boot.bootloader", "ro.bootloader", "unknown", },
-        { "ro.boot.hardware",   "ro.hardware",   "unknown", },
-        { "ro.boot.revision",   "ro.revision",   "0", },
-    };
-    for (const auto& prop : prop_map) {
-        std::string value = GetProperty(prop.src_prop, prop.default_value);
-        if (value != UNSET)
-            property_set(prop.dst_prop, value);
-    }
-}
-
-static void process_kernel_dt() {
-    if (!is_android_dt_value_expected("compatible", "android,firmware")) {
-        return;
-    }
-
-    std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir(get_android_dt_dir().c_str()), closedir);
-    if (!dir) return;
-
-    std::string dt_file;
-    struct dirent *dp;
-    while ((dp = readdir(dir.get())) != NULL) {
-        if (dp->d_type != DT_REG || !strcmp(dp->d_name, "compatible") || !strcmp(dp->d_name, "name")) {
-            continue;
+    ImportKernelCmdline([](const std::string& key, const std::string& value) {
+        if (key == "androidboot.verifiedbootstate") {
+            SetProperty("ro.boot.flash.locked", value == "orange" ? "0" : "1");
         }
-
-        std::string file_name = get_android_dt_dir() + dp->d_name;
-
-        android::base::ReadFileToString(file_name, &dt_file);
-        std::replace(dt_file.begin(), dt_file.end(), ',', '.');
-
-        property_set("ro.boot."s + dp->d_name, dt_file);
-    }
+    });
 }
 
-static void process_kernel_cmdline() {
-    // The first pass does the common stuff, and finds if we are in qemu.
-    // The second pass is only necessary for qemu to export all kernel params
-    // as properties.
-    import_kernel_cmdline(false, import_kernel_nv);
-    if (qemu[0]) import_kernel_cmdline(true, import_kernel_nv);
-}
-
-static Result<Success> property_enable_triggers_action(const BuiltinArguments& args) {
+static Result<void> property_enable_triggers_action(const BuiltinArguments& args) {
     /* Enable property triggers. */
     property_triggers_enabled = 1;
-    return Success();
+    return {};
 }
 
-static Result<Success> queue_property_triggers_action(const BuiltinArguments& args) {
+static Result<void> queue_property_triggers_action(const BuiltinArguments& args) {
     ActionManager::GetInstance().QueueBuiltinAction(property_enable_triggers_action, "enable_property_trigger");
     ActionManager::GetInstance().QueueAllPropertyActions();
-    return Success();
-}
-
-static Result<Success> InitBinder(const BuiltinArguments& args) {
-    // init's use of binder is very limited. init cannot:
-    //   - have any binder threads
-    //   - receive incoming binder calls
-    //   - pass local binder services to remote processes
-    //   - use death recipients
-    // The main supported usecases are:
-    //   - notifying other daemons (oneway calls only)
-    //   - retrieving data that is necessary to boot
-    // Also, binder can't be used by recovery.
-#ifndef RECOVERY
-    android::ProcessState::self()->setThreadPoolMaxThreadCount(0);
-    android::ProcessState::self()->setCallRestriction(
-            ProcessState::CallRestriction::ERROR_IF_NOT_ONEWAY);
-#endif
-    return Success();
+    return {};
 }
 
 // Set the UDC controller for the ConfigFS USB Gadgets.
 // Read the UDC controller in use from "/sys/class/udc".
 // In case of multiple UDC controllers select the first one.
-static void set_usb_controller() {
+static void SetUsbController() {
+    static auto controller_set = false;
+    if (controller_set) return;
     std::unique_ptr<DIR, decltype(&closedir)>dir(opendir("/sys/class/udc"), closedir);
     if (!dir) return;
 
@@ -487,7 +519,8 @@
     while ((dp = readdir(dir.get())) != nullptr) {
         if (dp->d_name[0] == '.') continue;
 
-        property_set("sys.usb.controller", dp->d_name);
+        SetProperty("sys.usb.controller", dp->d_name);
+        controller_set = true;
         break;
     }
 }
@@ -568,7 +601,7 @@
         PLOG(FATAL) << "failed to create signalfd";
     }
 
-    if (auto result = epoll->RegisterHandler(signal_fd, HandleSignalFd); !result) {
+    if (auto result = epoll->RegisterHandler(signal_fd, HandleSignalFd); !result.ok()) {
         LOG(FATAL) << result.error();
     }
 }
@@ -589,7 +622,7 @@
             found = true;
             LOG(INFO) << "Starting service '" << svc->name() << "' from keychord "
                       << android::base::Join(keycodes, ' ');
-            if (auto result = svc->Start(); !result) {
+            if (auto result = svc->Start(); !result.ok()) {
                 LOG(ERROR) << "Could not start service '" << svc->name() << "' from keychord "
                            << android::base::Join(keycodes, ' ') << ": " << result.error();
             }
@@ -600,18 +633,56 @@
     }
 }
 
-static void GlobalSeccomp() {
-    import_kernel_cmdline(false, [](const std::string& key, const std::string& value,
-                                    bool in_qemu) {
-        if (key == "androidboot.seccomp" && value == "global" && !set_global_seccomp_filter()) {
-            LOG(FATAL) << "Failed to globally enable seccomp!";
-        }
-    });
-}
-
 static void UmountDebugRamdisk() {
     if (umount("/debug_ramdisk") != 0) {
-        LOG(ERROR) << "Failed to umount /debug_ramdisk";
+        PLOG(ERROR) << "Failed to umount /debug_ramdisk";
+    }
+}
+
+static void MountExtraFilesystems() {
+#define CHECKCALL(x) \
+    if ((x) != 0) PLOG(FATAL) << #x " failed.";
+
+    // /apex is used to mount APEXes
+    CHECKCALL(mount("tmpfs", "/apex", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV,
+                    "mode=0755,uid=0,gid=0"));
+
+    // /linkerconfig is used to keep generated linker configuration
+    CHECKCALL(mount("tmpfs", "/linkerconfig", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV,
+                    "mode=0755,uid=0,gid=0"));
+#undef CHECKCALL
+}
+
+static void RecordStageBoottimes(const boot_clock::time_point& second_stage_start_time) {
+    int64_t first_stage_start_time_ns = -1;
+    if (auto first_stage_start_time_str = getenv(kEnvFirstStageStartedAt);
+        first_stage_start_time_str) {
+        SetProperty("ro.boottime.init", first_stage_start_time_str);
+        android::base::ParseInt(first_stage_start_time_str, &first_stage_start_time_ns);
+    }
+    unsetenv(kEnvFirstStageStartedAt);
+
+    int64_t selinux_start_time_ns = -1;
+    if (auto selinux_start_time_str = getenv(kEnvSelinuxStartedAt); selinux_start_time_str) {
+        android::base::ParseInt(selinux_start_time_str, &selinux_start_time_ns);
+    }
+    unsetenv(kEnvSelinuxStartedAt);
+
+    if (selinux_start_time_ns == -1) return;
+    if (first_stage_start_time_ns == -1) return;
+
+    SetProperty("ro.boottime.init.first_stage",
+                std::to_string(selinux_start_time_ns - first_stage_start_time_ns));
+    SetProperty("ro.boottime.init.selinux",
+                std::to_string(second_stage_start_time.time_since_epoch().count() -
+                               selinux_start_time_ns));
+}
+
+void SendLoadPersistentPropertiesMessage() {
+    auto init_message = InitMessage{};
+    init_message.set_load_persistent_properties(true);
+    if (auto result = SendMessage(property_fd, init_message); !result.ok()) {
+        LOG(ERROR) << "Failed to send load persistent properties message: " << result.error();
     }
 }
 
@@ -620,17 +691,31 @@
         InstallRebootSignalHandlers();
     }
 
+    boot_clock::time_point start_time = boot_clock::now();
+
+    trigger_shutdown = [](const std::string& command) { shutdown_state.TriggerShutdown(command); };
+
     SetStdioToDevNull(argv);
     InitKernelLogging(argv);
     LOG(INFO) << "init second stage started!";
 
-    // Set init and its forked children's oom_adj.
-    if (auto result = WriteFile("/proc/1/oom_score_adj", "-1000"); !result) {
-        LOG(ERROR) << "Unable to write -1000 to /proc/1/oom_score_adj: " << result.error();
+    // Init should not crash because of a dependence on any other process, therefore we ignore
+    // SIGPIPE and handle EPIPE at the call site directly.  Note that setting a signal to SIG_IGN
+    // is inherited across exec, but custom signal handlers are not.  Since we do not want to
+    // ignore SIGPIPE for child processes, we set a no-op function for the signal handler instead.
+    {
+        struct sigaction action = {.sa_flags = SA_RESTART};
+        action.sa_handler = [](int) {};
+        sigaction(SIGPIPE, &action, nullptr);
     }
 
-    // Enable seccomp if global boot option was passed (otherwise it is enabled in zygote).
-    GlobalSeccomp();
+    // Set init and its forked children's oom_adj.
+    if (auto result =
+                WriteFile("/proc/1/oom_score_adj", StringPrintf("%d", DEFAULT_OOM_SCORE_ADJUST));
+        !result.ok()) {
+        LOG(ERROR) << "Unable to write " << DEFAULT_OOM_SCORE_ADJUST
+                   << " to /proc/1/oom_score_adj: " << result.error();
+    }
 
     // Set up a session keyring that all processes will have access to. It
     // will hold things like FBE encryption keys. No process should override
@@ -640,65 +725,66 @@
     // Indicate that booting is in progress to background fw loaders, etc.
     close(open("/dev/.booting", O_WRONLY | O_CREAT | O_CLOEXEC, 0000));
 
-    property_init();
-
-    // If arguments are passed both on the command line and in DT,
-    // properties set in DT always have priority over the command-line ones.
-    process_kernel_dt();
-    process_kernel_cmdline();
-
-    // Propagate the kernel variables to internal variables
-    // used by init as well as the current required properties.
-    export_kernel_boot_props();
-
-    // Make the time that init started available for bootstat to log.
-    property_set("ro.boottime.init", getenv("INIT_STARTED_AT"));
-    property_set("ro.boottime.init.selinux", getenv("INIT_SELINUX_TOOK"));
-
-    // Set libavb version for Framework-only OTA match in Treble build.
-    const char* avb_version = getenv("INIT_AVB_VERSION");
-    if (avb_version) property_set("ro.boot.avb_version", avb_version);
-
     // See if need to load debug props to allow adb root, when the device is unlocked.
     const char* force_debuggable_env = getenv("INIT_FORCE_DEBUGGABLE");
+    bool load_debug_prop = false;
     if (force_debuggable_env && AvbHandle::IsDeviceUnlocked()) {
         load_debug_prop = "true"s == force_debuggable_env;
     }
-
-    // Clean up our environment.
-    unsetenv("INIT_STARTED_AT");
-    unsetenv("INIT_SELINUX_TOOK");
-    unsetenv("INIT_AVB_VERSION");
     unsetenv("INIT_FORCE_DEBUGGABLE");
 
+    // Umount the debug ramdisk so property service doesn't read .prop files from there, when it
+    // is not meant to.
+    if (!load_debug_prop) {
+        UmountDebugRamdisk();
+    }
+
+    PropertyInit();
+
+    // Umount the debug ramdisk after property service has read the .prop files when it means to.
+    if (load_debug_prop) {
+        UmountDebugRamdisk();
+    }
+
+    // Mount extra filesystems required during second stage init
+    MountExtraFilesystems();
+
     // Now set up SELinux for second stage.
     SelinuxSetupKernelLogging();
     SelabelInitialize();
     SelinuxRestoreContext();
 
     Epoll epoll;
-    if (auto result = epoll.Open(); !result) {
+    if (auto result = epoll.Open(); !result.ok()) {
         PLOG(FATAL) << result.error();
     }
 
     InstallSignalFdHandler(&epoll);
+    InstallInitNotifier(&epoll);
+    StartPropertyService(&property_fd);
 
-    property_load_boot_defaults(load_debug_prop);
-    UmountDebugRamdisk();
+    // Make the time that init stages started available for bootstat to log.
+    RecordStageBoottimes(start_time);
+
+    // Set libavb version for Framework-only OTA match in Treble build.
+    if (const char* avb_version = getenv("INIT_AVB_VERSION"); avb_version != nullptr) {
+        SetProperty("ro.boot.avb_version", avb_version);
+    }
+    unsetenv("INIT_AVB_VERSION");
+
     fs_mgr_vendor_overlay_mount_all();
     export_oem_lock_status();
-    StartPropertyService(&epoll);
     MountHandler mount_handler(&epoll);
-    set_usb_controller();
+    SetUsbController();
 
-    const BuiltinFunctionMap function_map;
+    const BuiltinFunctionMap& function_map = GetBuiltinFunctionMap();
     Action::set_function_map(&function_map);
 
     if (!SetupMountNamespaces()) {
         PLOG(FATAL) << "SetupMountNamespaces failed";
     }
 
-    subcontexts = InitializeSubcontexts();
+    InitializeSubcontext();
 
     ActionManager& am = ActionManager::GetInstance();
     ServiceList& sm = ServiceList::GetInstance();
@@ -710,14 +796,14 @@
     if (false) DumpState();
 
     // Make the GSI status available before scripts start running.
-    if (android::gsi::IsGsiRunning()) {
-        property_set("ro.gsid.image_running", "1");
-    } else {
-        property_set("ro.gsid.image_running", "0");
-    }
+    auto is_running = android::gsi::IsGsiRunning() ? "1" : "0";
+    SetProperty(gsi::kGsiBootedProp, is_running);
+    auto is_installed = android::gsi::IsGsiInstalled() ? "1" : "0";
+    SetProperty(gsi::kGsiInstalledProp, is_installed);
 
     am.QueueBuiltinAction(SetupCgroupsAction, "SetupCgroups");
-
+    am.QueueBuiltinAction(SetKptrRestrictAction, "SetKptrRestrict");
+    am.QueueBuiltinAction(TestPerfEventSelinuxAction, "TestPerfEventSelinux");
     am.QueueEventTrigger("early-init");
 
     // Queue an action that waits for coldboot done so we know ueventd has set up all of /dev...
@@ -725,32 +811,24 @@
     // ... so that we can start queuing up actions that require stuff from /dev.
     am.QueueBuiltinAction(MixHwrngIntoLinuxRngAction, "MixHwrngIntoLinuxRng");
     am.QueueBuiltinAction(SetMmapRndBitsAction, "SetMmapRndBits");
-    am.QueueBuiltinAction(SetKptrRestrictAction, "SetKptrRestrict");
     Keychords keychords;
     am.QueueBuiltinAction(
-        [&epoll, &keychords](const BuiltinArguments& args) -> Result<Success> {
-            for (const auto& svc : ServiceList::GetInstance()) {
-                keychords.Register(svc->keycodes());
-            }
-            keychords.Start(&epoll, HandleKeychord);
-            return Success();
-        },
-        "KeychordInit");
-    am.QueueBuiltinAction(console_init_action, "console_init");
+            [&epoll, &keychords](const BuiltinArguments& args) -> Result<void> {
+                for (const auto& svc : ServiceList::GetInstance()) {
+                    keychords.Register(svc->keycodes());
+                }
+                keychords.Start(&epoll, HandleKeychord);
+                return {};
+            },
+            "KeychordInit");
 
     // Trigger all the boot actions to get us started.
     am.QueueEventTrigger("init");
 
-    // Starting the BoringSSL self test, for NIAP certification compliance.
-    am.QueueBuiltinAction(StartBoringSslSelfTest, "StartBoringSslSelfTest");
-
     // Repeat mix_hwrng_into_linux_rng in case /dev/hw_random or /dev/random
     // wasn't ready immediately after wait_for_coldboot_done
     am.QueueBuiltinAction(MixHwrngIntoLinuxRngAction, "MixHwrngIntoLinuxRng");
 
-    // Initialize binder before bringing up other system services
-    am.QueueBuiltinAction(InitBinder, "InitBinder");
-
     // Don't mount filesystems or start core system services in charger mode.
     std::string bootmode = GetProperty("ro.bootmode", "");
     if (bootmode == "charger") {
@@ -766,34 +844,45 @@
         // By default, sleep until something happens.
         auto epoll_timeout = std::optional<std::chrono::milliseconds>{};
 
-        if (do_shutdown && !shutting_down) {
-            do_shutdown = false;
-            if (HandlePowerctlMessage(shutdown_command)) {
-                shutting_down = true;
-            }
+        auto shutdown_command = shutdown_state.CheckShutdown();
+        if (shutdown_command) {
+            HandlePowerctlMessage(*shutdown_command);
         }
 
-        if (!(waiting_for_prop || Service::is_exec_service_running())) {
+        if (!(prop_waiter_state.MightBeWaiting() || Service::is_exec_service_running())) {
             am.ExecuteOneCommand();
         }
-        if (!(waiting_for_prop || Service::is_exec_service_running())) {
-            if (!shutting_down) {
-                auto next_process_action_time = HandleProcessActions();
+        if (!IsShuttingDown()) {
+            auto next_process_action_time = HandleProcessActions();
 
-                // If there's a process that needs restarting, wake up in time for that.
-                if (next_process_action_time) {
-                    epoll_timeout = std::chrono::ceil<std::chrono::milliseconds>(
-                            *next_process_action_time - boot_clock::now());
-                    if (*epoll_timeout < 0ms) epoll_timeout = 0ms;
-                }
+            // If there's a process that needs restarting, wake up in time for that.
+            if (next_process_action_time) {
+                epoll_timeout = std::chrono::ceil<std::chrono::milliseconds>(
+                        *next_process_action_time - boot_clock::now());
+                if (*epoll_timeout < 0ms) epoll_timeout = 0ms;
             }
+        }
 
+        if (!(prop_waiter_state.MightBeWaiting() || Service::is_exec_service_running())) {
             // If there's more work to do, wake up again immediately.
             if (am.HasMoreCommands()) epoll_timeout = 0ms;
         }
 
-        if (auto result = epoll.Wait(epoll_timeout); !result) {
-            LOG(ERROR) << result.error();
+        auto pending_functions = epoll.Wait(epoll_timeout);
+        if (!pending_functions.ok()) {
+            LOG(ERROR) << pending_functions.error();
+        } else if (!pending_functions->empty()) {
+            // We always reap children before responding to the other pending functions. This is to
+            // prevent a race where other daemons see that a service has exited and ask init to
+            // start it again via ctl.start before init has reaped it.
+            ReapAnyOutstandingChildren();
+            for (const auto& function : *pending_functions) {
+                (*function)();
+            }
+        }
+        if (!IsShuttingDown()) {
+            HandleControlMessages();
+            SetUsbController();
         }
     }
 
diff --git a/init/init.h b/init/init.h
index a76da20..27f64e2 100644
--- a/init/init.h
+++ b/init/init.h
@@ -14,35 +14,22 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_INIT_H
-#define _INIT_INIT_H
+#pragma once
 
 #include <sys/types.h>
 
-#include <functional>
 #include <string>
-#include <vector>
 
 #include "action.h"
 #include "action_manager.h"
 #include "parser.h"
-#include "service.h"
+#include "service_list.h"
 
 namespace android {
 namespace init {
 
-// Note: These globals are *only* valid in init, so they should not be used in ueventd
-// or any files that may be included in ueventd, such as devices.cpp and util.cpp.
-// TODO: Have an Init class and remove all globals.
-extern std::string default_console;
-extern std::vector<std::string> late_import_paths;
-
 Parser CreateParser(ActionManager& action_manager, ServiceList& service_list);
-Parser CreateServiceOnlyParser(ServiceList& service_list);
-
-void HandleControlMessage(const std::string& msg, const std::string& arg, pid_t pid);
-
-void property_changed(const std::string& name, const std::string& value);
+Parser CreateServiceOnlyParser(ServiceList& service_list, bool from_apex);
 
 bool start_waiting_for_property(const char *name, const char *value);
 
@@ -50,9 +37,12 @@
 
 void ResetWaitForProp();
 
+void SendLoadPersistentPropertiesMessage();
+
+void PropertyChanged(const std::string& name, const std::string& value);
+bool QueueControlMessage(const std::string& message, const std::string& name, pid_t pid, int fd);
+
 int SecondStageMain(int argc, char** argv);
 
 }  // namespace init
 }  // namespace android
-
-#endif  /* _INIT_INIT_H */
diff --git a/init/init_test.cpp b/init/init_test.cpp
index c2f0c41..fa65740 100644
--- a/init/init_test.cpp
+++ b/init/init_test.cpp
@@ -17,32 +17,38 @@
 #include <functional>
 
 #include <android-base/file.h>
+#include <android-base/properties.h>
 #include <gtest/gtest.h>
 
 #include "action.h"
 #include "action_manager.h"
 #include "action_parser.h"
+#include "builtin_arguments.h"
 #include "builtins.h"
 #include "import_parser.h"
 #include "keyword_map.h"
 #include "parser.h"
 #include "service.h"
-#include "test_function_map.h"
+#include "service_list.h"
+#include "service_parser.h"
 #include "util.h"
 
+using android::base::GetIntProperty;
+
 namespace android {
 namespace init {
 
 using ActionManagerCommand = std::function<void(ActionManager&)>;
 
-void TestInit(const std::string& init_script_file, const TestFunctionMap& test_function_map,
+void TestInit(const std::string& init_script_file, const BuiltinFunctionMap& test_function_map,
               const std::vector<ActionManagerCommand>& commands, ServiceList* service_list) {
     ActionManager am;
 
     Action::set_function_map(&test_function_map);
 
     Parser parser;
-    parser.AddSectionParser("service", std::make_unique<ServiceParser>(service_list, nullptr));
+    parser.AddSectionParser("service",
+                            std::make_unique<ServiceParser>(service_list, nullptr, std::nullopt));
     parser.AddSectionParser("on", std::make_unique<ActionParser>(&am, nullptr));
     parser.AddSectionParser("import", std::make_unique<ImportParser>(&parser));
 
@@ -57,7 +63,7 @@
     }
 }
 
-void TestInitText(const std::string& init_script, const TestFunctionMap& test_function_map,
+void TestInitText(const std::string& init_script, const BuiltinFunctionMap& test_function_map,
                   const std::vector<ActionManagerCommand>& commands, ServiceList* service_list) {
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
@@ -73,8 +79,13 @@
 pass_test
 )init";
 
-    TestFunctionMap test_function_map;
-    test_function_map.Add("pass_test", [&expect_true]() { expect_true = true; });
+    auto do_pass_test = [&expect_true](const BuiltinArguments&) {
+        expect_true = true;
+        return Result<void>{};
+    };
+    BuiltinFunctionMap test_function_map = {
+            {"pass_test", {0, 0, {false, do_pass_test}}},
+    };
 
     ActionManagerCommand trigger_boot = [](ActionManager& am) { am.QueueEventTrigger("boot"); };
     std::vector<ActionManagerCommand> commands{trigger_boot};
@@ -85,6 +96,26 @@
     EXPECT_TRUE(expect_true);
 }
 
+TEST(init, WrongEventTrigger) {
+    std::string init_script =
+            R"init(
+on boot:
+pass_test
+)init";
+
+    TemporaryFile tf;
+    ASSERT_TRUE(tf.fd != -1);
+    ASSERT_TRUE(android::base::WriteStringToFd(init_script, tf.fd));
+
+    ActionManager am;
+
+    Parser parser;
+    parser.AddSectionParser("on", std::make_unique<ActionParser>(&am, nullptr));
+
+    ASSERT_TRUE(parser.ParseConfig(tf.path));
+    ASSERT_EQ(1u, parser.parse_error_count());
+}
+
 TEST(init, EventTriggerOrder) {
     std::string init_script =
         R"init(
@@ -100,10 +131,24 @@
 )init";
 
     int num_executed = 0;
-    TestFunctionMap test_function_map;
-    test_function_map.Add("execute_first", [&num_executed]() { EXPECT_EQ(0, num_executed++); });
-    test_function_map.Add("execute_second", [&num_executed]() { EXPECT_EQ(1, num_executed++); });
-    test_function_map.Add("execute_third", [&num_executed]() { EXPECT_EQ(2, num_executed++); });
+    auto do_execute_first = [&num_executed](const BuiltinArguments&) {
+        EXPECT_EQ(0, num_executed++);
+        return Result<void>{};
+    };
+    auto do_execute_second = [&num_executed](const BuiltinArguments&) {
+        EXPECT_EQ(1, num_executed++);
+        return Result<void>{};
+    };
+    auto do_execute_third = [&num_executed](const BuiltinArguments&) {
+        EXPECT_EQ(2, num_executed++);
+        return Result<void>{};
+    };
+
+    BuiltinFunctionMap test_function_map = {
+            {"execute_first", {0, 0, {false, do_execute_first}}},
+            {"execute_second", {0, 0, {false, do_execute_second}}},
+            {"execute_third", {0, 0, {false, do_execute_third}}},
+    };
 
     ActionManagerCommand trigger_boot = [](ActionManager& am) { am.QueueEventTrigger("boot"); };
     std::vector<ActionManagerCommand> commands{trigger_boot};
@@ -124,7 +169,7 @@
 )init";
 
     ServiceList service_list;
-    TestInitText(init_script, TestFunctionMap(), {}, &service_list);
+    TestInitText(init_script, BuiltinFunctionMap(), {}, &service_list);
     ASSERT_EQ(1, std::distance(service_list.begin(), service_list.end()));
 
     auto service = service_list.begin()->get();
@@ -162,9 +207,9 @@
                                "execute 3";
     // clang-format on
     // WriteFile() ensures the right mode is set
-    ASSERT_TRUE(WriteFile(std::string(dir.path) + "/a.rc", dir_a_script));
+    ASSERT_RESULT_OK(WriteFile(std::string(dir.path) + "/a.rc", dir_a_script));
 
-    ASSERT_TRUE(WriteFile(std::string(dir.path) + "/b.rc", "on boot\nexecute 5"));
+    ASSERT_RESULT_OK(WriteFile(std::string(dir.path) + "/b.rc", "on boot\nexecute 5"));
 
     // clang-format off
     std::string start_script = "import " + std::string(first_import.path) + "\n"
@@ -180,11 +225,12 @@
     auto execute_command = [&num_executed](const BuiltinArguments& args) {
         EXPECT_EQ(2U, args.size());
         EXPECT_EQ(++num_executed, std::stoi(args[1]));
-        return Success();
+        return Result<void>{};
     };
 
-    TestFunctionMap test_function_map;
-    test_function_map.Add("execute", 1, 1, false, execute_command);
+    BuiltinFunctionMap test_function_map = {
+            {"execute", {1, 1, {false, execute_command}}},
+    };
 
     ActionManagerCommand trigger_boot = [](ActionManager& am) { am.QueueEventTrigger("boot"); };
     std::vector<ActionManagerCommand> commands{trigger_boot};
@@ -196,5 +242,47 @@
     EXPECT_EQ(6, num_executed);
 }
 
+TEST(init, RejectsCriticalAndOneshotService) {
+    if (GetIntProperty("ro.product.first_api_level", 10000) < 30) {
+        GTEST_SKIP() << "Test only valid for devices launching with R or later";
+    }
+
+    std::string init_script =
+            R"init(
+service A something
+  class first
+  critical
+  oneshot
+)init";
+
+    TemporaryFile tf;
+    ASSERT_TRUE(tf.fd != -1);
+    ASSERT_TRUE(android::base::WriteStringToFd(init_script, tf.fd));
+
+    ServiceList service_list;
+    Parser parser;
+    parser.AddSectionParser("service",
+                            std::make_unique<ServiceParser>(&service_list, nullptr, std::nullopt));
+
+    ASSERT_TRUE(parser.ParseConfig(tf.path));
+    ASSERT_EQ(1u, parser.parse_error_count());
+}
+
 }  // namespace init
 }  // namespace android
+
+int SubcontextTestChildMain(int, char**);
+int FirmwareTestChildMain(int, char**);
+
+int main(int argc, char** argv) {
+    if (argc > 1 && !strcmp(argv[1], "subcontext")) {
+        return SubcontextTestChildMain(argc, argv);
+    }
+
+    if (argc > 1 && !strcmp(argv[1], "firmware")) {
+        return FirmwareTestChildMain(argc, argv);
+    }
+
+    testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/init/interface_utils.cpp b/init/interface_utils.cpp
new file mode 100644
index 0000000..1b76bba
--- /dev/null
+++ b/init/interface_utils.cpp
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "interface_utils.h"
+
+#include <fstream>
+#include <sstream>
+
+#include <android-base/strings.h>
+#include <hidl-util/FqInstance.h>
+
+using android::FqInstance;
+using android::FQName;
+using android::base::Error;
+
+namespace android {
+namespace init {
+
+namespace {
+
+std::string FQNamesToString(const std::set<FQName>& fqnames) {
+    std::set<std::string> fqname_strings;
+    for (const FQName& fqname : fqnames) {
+        fqname_strings.insert(fqname.string());
+    }
+    return android::base::Join(fqname_strings, " ");
+}
+
+}  // namespace
+
+Result<void> CheckInterfaceInheritanceHierarchy(const std::set<std::string>& instances,
+                                                const InterfaceInheritanceHierarchyMap& hierarchy) {
+    std::set<FQName> interface_fqnames;
+    for (const std::string& instance : instances) {
+        // There is insufficient build-time information on AIDL interfaces to check them here
+        // TODO(b/139307527): Rework how services store interfaces to avoid excess string parsing
+        if (base::Split(instance, "/")[0] == "aidl") {
+            continue;
+        }
+
+        FqInstance fqinstance;
+        if (!fqinstance.setTo(instance)) {
+            return Error() << "Unable to parse interface instance '" << instance << "'";
+        }
+        interface_fqnames.insert(fqinstance.getFqName());
+    }
+    return CheckInterfaceInheritanceHierarchy(interface_fqnames, hierarchy);
+}
+
+Result<void> CheckInterfaceInheritanceHierarchy(const std::set<FQName>& interfaces,
+                                                const InterfaceInheritanceHierarchyMap& hierarchy) {
+    std::ostringstream error_stream;
+    for (const FQName& intf : interfaces) {
+        if (hierarchy.count(intf) == 0) {
+            error_stream << "\nInterface is not in the known set of hidl_interfaces: '"
+                         << intf.string()
+                         << "'. Please ensure the interface is spelled correctly and built "
+                         << "by a hidl_interface target.";
+            continue;
+        }
+        const std::set<FQName>& required_interfaces = hierarchy.at(intf);
+        std::set<FQName> diff;
+        std::set_difference(required_interfaces.begin(), required_interfaces.end(),
+                            interfaces.begin(), interfaces.end(),
+                            std::inserter(diff, diff.begin()));
+        if (!diff.empty()) {
+            error_stream << "\nInterface '" << intf.string() << "' requires its full inheritance "
+                         << "hierarchy to be listed in this init_rc file. Missing "
+                         << "interfaces: [" << FQNamesToString(diff) << "]";
+        }
+    }
+    const std::string& errors = error_stream.str();
+    if (!errors.empty()) {
+        return Error() << errors;
+    }
+
+    return {};
+}
+
+std::optional<std::set<FQName>> known_interfaces;
+
+void SetKnownInterfaces(const InterfaceInheritanceHierarchyMap& hierarchy) {
+    known_interfaces = std::set<FQName>();
+    for (const auto& [intf, inherited_interfaces] : hierarchy) {
+        known_interfaces->insert(intf);
+    }
+}
+
+Result<void> IsKnownInterface(const std::string& instance) {
+    FqInstance fqinstance;
+    if (!fqinstance.setTo(instance)) {
+        return Error() << "Unable to parse interface instance '" << instance << "'";
+    }
+    return IsKnownInterface(fqinstance.getFqName());
+}
+
+Result<void> IsKnownInterface(const FQName& intf) {
+    if (!known_interfaces) {
+        return Error() << "No known interfaces have been loaded.";
+    }
+    if (known_interfaces->count(intf) == 0) {
+        return Error() << "Interface is not in the known set of hidl_interfaces: '" << intf.string()
+                       << "'. Please ensure the interface is spelled correctly and built "
+                       << "by a hidl_interface target.";
+    }
+    return {};
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/interface_utils.h b/init/interface_utils.h
new file mode 100644
index 0000000..4ca377f
--- /dev/null
+++ b/init/interface_utils.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <map>
+#include <set>
+#include <string>
+
+#include <hidl-util/FQName.h>
+
+#include "result.h"
+
+namespace android {
+namespace init {
+
+using InterfaceInheritanceHierarchyMap = std::map<android::FQName, std::set<android::FQName>>;
+
+// For the given set of interfaces / interface instances, checks that each
+// interface's hierarchy of inherited interfaces is also included in the given
+// interface set. Uses the provided hierarchy data.
+Result<void> CheckInterfaceInheritanceHierarchy(const std::set<std::string>& instances,
+                                                const InterfaceInheritanceHierarchyMap& hierarchy);
+Result<void> CheckInterfaceInheritanceHierarchy(const std::set<android::FQName>& interfaces,
+                                                const InterfaceInheritanceHierarchyMap& hierarchy);
+
+// Saves the set of known interfaces using the provided HIDL interface
+// inheritance hierarchy.
+void SetKnownInterfaces(const InterfaceInheritanceHierarchyMap& hierarchy);
+
+// Checks if the provided interface is in the set of known interfaces. Returns
+// an empty Result if present, otherwise an Error.
+Result<void> IsKnownInterface(const std::string& instance);
+Result<void> IsKnownInterface(const FQName& intf);
+
+}  // namespace init
+}  // namespace android
diff --git a/init/keychords.cpp b/init/keychords.cpp
index f5ac44f..adec383 100644
--- a/init/keychords.cpp
+++ b/init/keychords.cpp
@@ -41,7 +41,7 @@
 
 Keychords::~Keychords() noexcept {
     if (inotify_fd_ >= 0) {
-        epoll_->UnregisterHandler(inotify_fd_).IgnoreError();
+        epoll_->UnregisterHandler(inotify_fd_);
         ::close(inotify_fd_);
     }
     while (!registration_.empty()) GeteventCloseDevice(registration_.begin()->first);
@@ -187,7 +187,7 @@
         LambdaCheck();
     }
     if (auto result = epoll_->RegisterHandler(fd, [this, fd]() { this->LambdaHandler(fd); });
-        !result) {
+        !result.ok()) {
         LOG(WARNING) << "Could not register keychord epoll handler: " << result.error();
         return false;
     }
@@ -212,7 +212,7 @@
     auto it = registration_.find(device);
     if (it == registration_.end()) return;
     auto fd = (*it).second;
-    epoll_->UnregisterHandler(fd).IgnoreError();
+    epoll_->UnregisterHandler(fd);
     registration_.erase(it);
     ::close(fd);
 }
@@ -272,7 +272,7 @@
     if (inotify_fd_ >= 0) {
         if (auto result =
                     epoll_->RegisterHandler(inotify_fd_, [this]() { this->InotifyHandler(); });
-            !result) {
+            !result.ok()) {
             LOG(WARNING) << "Could not register keychord epoll handler: " << result.error();
         }
     }
@@ -285,7 +285,7 @@
 
 void Keychords::Start(Epoll* epoll, std::function<void(const std::vector<int>&)> handler) {
     epoll_ = epoll;
-    handler_ = handler;
+    handler_ = std::move(handler);
     if (entries_.size()) GeteventOpenDevice();
 }
 
diff --git a/init/keychords_test.cpp b/init/keychords_test.cpp
index e5a6fd3..8a333a2 100644
--- a/init/keychords_test.cpp
+++ b/init/keychords_test.cpp
@@ -29,7 +29,6 @@
 #include <vector>
 
 #include <android-base/properties.h>
-#include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <gtest/gtest.h>
 
@@ -205,7 +204,7 @@
 
 TestFrame::TestFrame(const std::vector<const std::vector<int>>& chords, EventHandler* ev)
     : ev_(ev) {
-    if (!epoll_.Open()) return;
+    if (!epoll_.Open().ok()) return;
     for (const auto& keycodes : chords) keychords_.Register(keycodes);
     keychords_.Start(&epoll_, [this](const std::vector<int>& keycodes) {
         this->keycodes_.emplace_back(keycodes);
@@ -213,7 +212,11 @@
 }
 
 void TestFrame::RelaxForMs(std::chrono::milliseconds wait) {
-    epoll_.Wait(wait).IgnoreError();
+    auto pending_functions = epoll_.Wait(wait);
+    ASSERT_RESULT_OK(pending_functions);
+    for (const auto& function : *pending_functions) {
+        (*function)();
+    }
 }
 
 void TestFrame::SetChord(int key, bool value) {
diff --git a/init/keyword_map.h b/init/keyword_map.h
index c95fc73..d92678f 100644
--- a/init/keyword_map.h
+++ b/init/keyword_map.h
@@ -14,70 +14,74 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_KEYWORD_MAP_H_
-#define _INIT_KEYWORD_MAP_H_
+#pragma once
 
 #include <map>
 #include <string>
-
-#include <android-base/stringprintf.h>
+#include <vector>
 
 #include "result.h"
 
 namespace android {
 namespace init {
 
-template <typename Function>
+// Every init builtin, init service option, and ueventd option has a minimum and maximum number of
+// arguments.  These must be checked both at run time for safety and also at build time for
+// correctness in host_init_verifier.  Instead of copying and pasting the boiler plate code that
+// does this check into each function, it is abstracted in KeywordMap<>.  This class maps keywords
+// to functions and checks that the number of arguments provided falls in the correct range or
+// returns an error otherwise.
+
+// Value is the return value of Find(), which is typically either a single function or a struct with
+// additional information.
+template <typename Value>
 class KeywordMap {
   public:
-    using FunctionInfo = std::tuple<std::size_t, std::size_t, Function>;
-    using Map = std::map<std::string, FunctionInfo>;
+    struct MapValue {
+        size_t min_args;
+        size_t max_args;
+        Value value;
+    };
 
-    virtual ~KeywordMap() {
-    }
+    KeywordMap() {}
+    KeywordMap(std::initializer_list<std::pair<const std::string, MapValue>> init) : map_(init) {}
 
-    const Result<Function> FindFunction(const std::vector<std::string>& args) const {
-        using android::base::StringPrintf;
-
+    Result<Value> Find(const std::vector<std::string>& args) const {
         if (args.empty()) return Error() << "Keyword needed, but not provided";
 
         auto& keyword = args[0];
         auto num_args = args.size() - 1;
 
-        auto function_info_it = map().find(keyword);
-        if (function_info_it == map().end()) {
-            return Error() << StringPrintf("Invalid keyword '%s'", keyword.c_str());
+        auto result_it = map_.find(keyword);
+        if (result_it == map_.end()) {
+            return Errorf("Invalid keyword '{}'", keyword);
         }
 
-        auto function_info = function_info_it->second;
+        auto result = result_it->second;
 
-        auto min_args = std::get<0>(function_info);
-        auto max_args = std::get<1>(function_info);
+        auto min_args = result.min_args;
+        auto max_args = result.max_args;
         if (min_args == max_args && num_args != min_args) {
-            return Error() << StringPrintf("%s requires %zu argument%s", keyword.c_str(), min_args,
-                                           (min_args > 1 || min_args == 0) ? "s" : "");
+            return Errorf("{} requires {} argument{}", keyword, min_args,
+                          (min_args > 1 || min_args == 0) ? "s" : "");
         }
 
         if (num_args < min_args || num_args > max_args) {
             if (max_args == std::numeric_limits<decltype(max_args)>::max()) {
-                return Error() << StringPrintf("%s requires at least %zu argument%s",
-                                               keyword.c_str(), min_args, min_args > 1 ? "s" : "");
+                return Errorf("{} requires at least {} argument{}", keyword, min_args,
+                              min_args > 1 ? "s" : "");
             } else {
-                return Error() << StringPrintf("%s requires between %zu and %zu arguments",
-                                               keyword.c_str(), min_args, max_args);
+                return Errorf("{} requires between {} and {} arguments", keyword, min_args,
+                              max_args);
             }
         }
 
-        return std::get<Function>(function_info);
+        return result.value;
     }
 
   private:
-    // Map of keyword ->
-    // (minimum number of arguments, maximum number of arguments, function pointer)
-    virtual const Map& map() const = 0;
+    std::map<std::string, MapValue> map_;
 };
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/lmkd_service.cpp b/init/lmkd_service.cpp
new file mode 100644
index 0000000..c982925
--- /dev/null
+++ b/init/lmkd_service.cpp
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "lmkd_service.h"
+
+#include <errno.h>
+
+#include <android-base/logging.h>
+#include <liblmkd_utils.h>
+
+#include "service_list.h"
+
+namespace android {
+namespace init {
+
+enum LmkdRegistrationResult {
+    LMKD_REG_SUCCESS,
+    LMKD_CONN_FAILED,
+    LMKD_REG_FAILED,
+};
+
+static int lmkd_socket = -1;
+
+static LmkdRegistrationResult RegisterProcess(uid_t uid, pid_t pid, int oom_score_adjust) {
+    // connect to lmkd if not already connected
+    if (lmkd_socket < 0) {
+        lmkd_socket = lmkd_connect();
+        if (lmkd_socket < 0) {
+            return LMKD_CONN_FAILED;
+        }
+    }
+
+    // register service with lmkd
+    struct lmk_procprio params;
+    params.pid = pid;
+    params.uid = uid;
+    params.oomadj = oom_score_adjust;
+    params.ptype = PROC_TYPE_SERVICE;
+    if (lmkd_register_proc(lmkd_socket, &params) != 0) {
+        // data transfer failed, reset the connection
+        close(lmkd_socket);
+        lmkd_socket = -1;
+        return LMKD_REG_FAILED;
+    }
+
+    return LMKD_REG_SUCCESS;
+}
+
+static bool UnregisterProcess(pid_t pid) {
+    if (lmkd_socket < 0) {
+        // no connection or it was lost, no need to unregister
+        return false;
+    }
+
+    // unregister service
+    struct lmk_procremove params;
+    params.pid = pid;
+    if (lmkd_unregister_proc(lmkd_socket, &params) != 0) {
+        // data transfer failed, reset the connection
+        close(lmkd_socket);
+        lmkd_socket = -1;
+        return false;
+    }
+
+    return true;
+}
+
+static void RegisterServices(pid_t exclude_pid) {
+    for (const auto& service : ServiceList::GetInstance()) {
+        auto svc = service.get();
+        if (svc->oom_score_adjust() != DEFAULT_OOM_SCORE_ADJUST) {
+            // skip if process is excluded or not yet forked (pid==0)
+            if (svc->pid() == exclude_pid || svc->pid() == 0) {
+                continue;
+            }
+            if (RegisterProcess(svc->uid(), svc->pid(), svc->oom_score_adjust()) !=
+                LMKD_REG_SUCCESS) {
+                // a failure here resets the connection, will retry during next registration
+                break;
+            }
+        }
+    }
+}
+
+void LmkdRegister(const std::string& name, uid_t uid, pid_t pid, int oom_score_adjust) {
+    bool new_connection = lmkd_socket == -1;
+    LmkdRegistrationResult result;
+
+    result = RegisterProcess(uid, pid, oom_score_adjust);
+    if (result == LMKD_REG_FAILED) {
+        // retry one time if connection to lmkd was lost
+        result = RegisterProcess(uid, pid, oom_score_adjust);
+        new_connection = result == LMKD_REG_SUCCESS;
+    }
+    switch (result) {
+        case LMKD_REG_SUCCESS:
+            // register existing services once new connection is established
+            if (new_connection) {
+                RegisterServices(pid);
+            }
+            break;
+        case LMKD_CONN_FAILED:
+            PLOG(ERROR) << "lmkd connection failed when " << name << " process got started";
+            break;
+        case LMKD_REG_FAILED:
+            PLOG(ERROR) << "lmkd failed to register " << name << " process";
+            break;
+    }
+}
+
+void LmkdUnregister(const std::string& name, pid_t pid) {
+    if (!UnregisterProcess(pid)) {
+        PLOG(ERROR) << "lmkd failed to unregister " << name << " process";
+    }
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/lmkd_service.h b/init/lmkd_service.h
new file mode 100644
index 0000000..5b51d52
--- /dev/null
+++ b/init/lmkd_service.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/types.h>
+
+#include <string>
+
+namespace android {
+namespace init {
+
+static const int MIN_OOM_SCORE_ADJUST = -1000;
+static const int MAX_OOM_SCORE_ADJUST = 1000;
+// service with default score is unkillable
+static const int DEFAULT_OOM_SCORE_ADJUST = MIN_OOM_SCORE_ADJUST;
+
+#if defined(__ANDROID__)
+
+void LmkdRegister(const std::string& name, uid_t uid, pid_t pid, int oom_score_adjust);
+void LmkdUnregister(const std::string& name, pid_t pid);
+
+#else  // defined(__ANDROID__)
+
+static inline void LmkdRegister(const std::string&, uid_t, pid_t, int) {}
+static inline void LmkdUnregister(const std::string&, pid_t) {}
+
+#endif  // defined(__ANDROID__)
+
+}  // namespace init
+}  // namespace android
diff --git a/init/main.cpp b/init/main.cpp
index 2ce46ef..38bc74b 100644
--- a/init/main.cpp
+++ b/init/main.cpp
@@ -60,7 +60,7 @@
     if (argc > 1) {
         if (!strcmp(argv[1], "subcontext")) {
             android::base::InitLogging(argv, &android::base::KernelLogger);
-            const BuiltinFunctionMap function_map;
+            const BuiltinFunctionMap& function_map = GetBuiltinFunctionMap();
 
             return SubcontextMain(argc, argv, &function_map);
         }
diff --git a/init/modalias_handler.cpp b/init/modalias_handler.cpp
index c61c210..07b05d8 100644
--- a/init/modalias_handler.cpp
+++ b/init/modalias_handler.cpp
@@ -16,147 +16,20 @@
 
 #include "modalias_handler.h"
 
-#include <fnmatch.h>
-#include <sys/syscall.h>
-
-#include <algorithm>
-#include <functional>
 #include <string>
 #include <vector>
 
-#include <android-base/chrono_utils.h>
-#include <android-base/logging.h>
-#include <android-base/unique_fd.h>
-
-#include "parser.h"
+#include <modprobe/modprobe.h>
 
 namespace android {
 namespace init {
 
-Result<Success> ModaliasHandler::ParseDepCallback(std::vector<std::string>&& args) {
-    std::vector<std::string> deps;
-
-    // Set first item as our modules path
-    std::string::size_type pos = args[0].find(':');
-    if (pos != std::string::npos) {
-        deps.emplace_back(args[0].substr(0, pos));
-    } else {
-        return Error() << "dependency lines must start with name followed by ':'";
-    }
-
-    // Remaining items are dependencies of our module
-    for (auto arg = args.begin() + 1; arg != args.end(); ++arg) {
-        deps.push_back(*arg);
-    }
-
-    // Key is striped module name to match names in alias file
-    std::size_t start = args[0].find_last_of('/');
-    std::size_t end = args[0].find(".ko:");
-    if ((end - start) <= 1) return Error() << "malformed dependency line";
-    auto mod_name = args[0].substr(start + 1, (end - start) - 1);
-    // module names can have '-', but their file names will have '_'
-    std::replace(mod_name.begin(), mod_name.end(), '-', '_');
-    this->module_deps_[mod_name] = deps;
-
-    return Success();
-}
-
-Result<Success> ModaliasHandler::ParseAliasCallback(std::vector<std::string>&& args) {
-    auto it = args.begin();
-    const std::string& type = *it++;
-
-    if (type != "alias") {
-        return Error() << "we only handle alias lines, got: " << type;
-    }
-
-    if (args.size() != 3) {
-        return Error() << "alias lines must have 3 entries";
-    }
-
-    std::string& alias = *it++;
-    std::string& module_name = *it++;
-    this->module_aliases_.emplace_back(alias, module_name);
-
-    return Success();
-}
-
-ModaliasHandler::ModaliasHandler() {
-    using namespace std::placeholders;
-
-    static const std::string base_paths[] = {
-            "/vendor/lib/modules/",
-            "/lib/modules/",
-            "/odm/lib/modules/",
-    };
-
-    Parser alias_parser;
-    auto alias_callback = std::bind(&ModaliasHandler::ParseAliasCallback, this, _1);
-    alias_parser.AddSingleLineParser("alias", alias_callback);
-    for (const auto& base_path : base_paths) alias_parser.ParseConfig(base_path + "modules.alias");
-
-    Parser dep_parser;
-    auto dep_callback = std::bind(&ModaliasHandler::ParseDepCallback, this, _1);
-    dep_parser.AddSingleLineParser("", dep_callback);
-    for (const auto& base_path : base_paths) dep_parser.ParseConfig(base_path + "modules.dep");
-}
-
-Result<Success> ModaliasHandler::Insmod(const std::string& path_name, const std::string& args) {
-    base::unique_fd fd(
-            TEMP_FAILURE_RETRY(open(path_name.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC)));
-    if (fd == -1) return ErrnoError() << "Could not open module '" << path_name << "'";
-
-    int ret = syscall(__NR_finit_module, fd.get(), args.c_str(), 0);
-    if (ret != 0) {
-        if (errno == EEXIST) {
-            // Module already loaded
-            return Success();
-        }
-        return ErrnoError() << "Failed to insmod '" << path_name << "' with args '" << args << "'";
-    }
-
-    LOG(INFO) << "Loaded kernel module " << path_name;
-    return Success();
-}
-
-Result<Success> ModaliasHandler::InsmodWithDeps(const std::string& module_name,
-                                                const std::string& args) {
-    if (module_name.empty()) {
-        return Error() << "Need valid module name";
-    }
-
-    auto it = module_deps_.find(module_name);
-    if (it == module_deps_.end()) {
-        return Error() << "Module '" << module_name << "' not in dependency file";
-    }
-    auto& dependencies = it->second;
-
-    // load module dependencies in reverse order
-    for (auto dep = dependencies.rbegin(); dep != dependencies.rend() - 1; ++dep) {
-        if (auto result = Insmod(*dep, ""); !result) return result;
-    }
-
-    // load target module itself with args
-    return Insmod(dependencies[0], args);
-}
+ModaliasHandler::ModaliasHandler(const std::vector<std::string>& base_paths)
+    : modprobe_(base_paths) {}
 
 void ModaliasHandler::HandleUevent(const Uevent& uevent) {
     if (uevent.modalias.empty()) return;
-
-    for (const auto& [alias, module] : module_aliases_) {
-        if (fnmatch(alias.c_str(), uevent.modalias.c_str(), 0) != 0) continue;  // Keep looking
-
-        LOG(DEBUG) << "Loading kernel module '" << module << "' for alias '" << uevent.modalias
-                   << "'";
-
-        if (auto result = InsmodWithDeps(module, ""); !result) {
-            LOG(ERROR) << "Cannot load module: " << result.error();
-            // try another one since there may be another match
-            continue;
-        }
-
-        // loading was successful
-        return;
-    }
+    modprobe_.LoadWithAliases(uevent.modalias, true);
 }
 
 }  // namespace init
diff --git a/init/modalias_handler.h b/init/modalias_handler.h
index 3247c86..ce89a05 100644
--- a/init/modalias_handler.h
+++ b/init/modalias_handler.h
@@ -17,10 +17,10 @@
 #pragma once
 
 #include <string>
-#include <unordered_map>
 #include <vector>
 
-#include "result.h"
+#include <modprobe/modprobe.h>
+
 #include "uevent.h"
 #include "uevent_handler.h"
 
@@ -29,20 +29,13 @@
 
 class ModaliasHandler : public UeventHandler {
   public:
-    ModaliasHandler();
+    ModaliasHandler(const std::vector<std::string>&);
     virtual ~ModaliasHandler() = default;
 
     void HandleUevent(const Uevent& uevent) override;
 
   private:
-    Result<Success> InsmodWithDeps(const std::string& module_name, const std::string& args);
-    Result<Success> Insmod(const std::string& path_name, const std::string& args);
-
-    Result<Success> ParseDepCallback(std::vector<std::string>&& args);
-    Result<Success> ParseAliasCallback(std::vector<std::string>&& args);
-
-    std::vector<std::pair<std::string, std::string>> module_aliases_;
-    std::unordered_map<std::string, std::vector<std::string>> module_deps_;
+    Modprobe modprobe_;
 };
 
 }  // namespace init
diff --git a/init/mount_handler.cpp b/init/mount_handler.cpp
index c8f0e76..01abba8 100644
--- a/init/mount_handler.cpp
+++ b/init/mount_handler.cpp
@@ -38,7 +38,6 @@
 #include <libdm/dm.h>
 
 #include "epoll.h"
-#include "property_service.h"
 
 namespace android {
 namespace init {
@@ -96,7 +95,7 @@
     // handling, except for clearing non-existent or already clear property.
     // Goal is reduction of empty properties and associated triggers.
     if (value.empty() && android::base::GetProperty(mount_prop, "").empty()) return;
-    property_set(mount_prop, value);
+    android::base::SetProperty(mount_prop, value);
 }
 
 }  // namespace
@@ -117,11 +116,11 @@
     if (!fp_) PLOG(FATAL) << "Could not open /proc/mounts";
     auto result = epoll->RegisterHandler(
             fileno(fp_.get()), [this]() { this->MountHandlerFunction(); }, EPOLLERR | EPOLLPRI);
-    if (!result) LOG(FATAL) << result.error();
+    if (!result.ok()) LOG(FATAL) << result.error();
 }
 
 MountHandler::~MountHandler() {
-    if (fp_) epoll_->UnregisterHandler(fileno(fp_.get())).IgnoreError();
+    if (fp_) epoll_->UnregisterHandler(fileno(fp_.get()));
 }
 
 void MountHandler::MountHandlerFunction() {
@@ -140,11 +139,11 @@
         }
     }
     free(buf);
-    for (auto entry : untouched) {
+    for (auto& entry : untouched) {
         SetMountProperty(entry, false);
         mounts_.erase(entry);
     }
-    for (auto entry : touched) {
+    for (auto& entry : touched) {
         SetMountProperty(entry, true);
         mounts_.emplace(std::move(entry));
     }
diff --git a/init/mount_namespace.cpp b/init/mount_namespace.cpp
index 5305dc7..f3b584c 100644
--- a/init/mount_namespace.cpp
+++ b/init/mount_namespace.cpp
@@ -25,7 +25,9 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
+#include <android-base/result.h>
 #include <android-base/unique_fd.h>
+#include <apex_manifest.pb.h>
 
 #include "util.h"
 
@@ -33,6 +35,19 @@
 namespace init {
 namespace {
 
+static bool BindMount(const std::string& source, const std::string& mount_point,
+                      bool recursive = false) {
+    unsigned long mountflags = MS_BIND;
+    if (recursive) {
+        mountflags |= MS_REC;
+    }
+    if (mount(source.c_str(), mount_point.c_str(), nullptr, mountflags, nullptr) == -1) {
+        PLOG(ERROR) << "Failed to bind mount " << source;
+        return false;
+    }
+    return true;
+}
+
 static bool MakeShared(const std::string& mount_point, bool recursive = false) {
     unsigned long mountflags = MS_SHARED;
     if (recursive) {
@@ -45,6 +60,18 @@
     return true;
 }
 
+static bool MakeSlave(const std::string& mount_point, bool recursive = false) {
+    unsigned long mountflags = MS_SLAVE;
+    if (recursive) {
+        mountflags |= MS_REC;
+    }
+    if (mount(nullptr, mount_point.c_str(), nullptr, mountflags, nullptr) == -1) {
+        PLOG(ERROR) << "Failed to change propagation type to slave";
+        return false;
+    }
+    return true;
+}
+
 static bool MakePrivate(const std::string& mount_point, bool recursive = false) {
     unsigned long mountflags = MS_PRIVATE;
     if (recursive) {
@@ -79,6 +106,90 @@
     return updatable;
 }
 
+static Result<void> MountDir(const std::string& path, const std::string& mount_path) {
+    if (int ret = mkdir(mount_path.c_str(), 0755); ret != 0 && errno != EEXIST) {
+        return ErrnoError() << "Could not create mount point " << mount_path;
+    }
+    if (mount(path.c_str(), mount_path.c_str(), nullptr, MS_BIND, nullptr) != 0) {
+        return ErrnoError() << "Could not bind mount " << path << " to " << mount_path;
+    }
+    return {};
+}
+
+static Result<std::string> GetApexName(const std::string& apex_dir) {
+    const std::string manifest_path = apex_dir + "/apex_manifest.pb";
+    std::string content;
+    if (!android::base::ReadFileToString(manifest_path, &content)) {
+        return Error() << "Failed to read manifest file: " << manifest_path;
+    }
+    apex::proto::ApexManifest manifest;
+    if (!manifest.ParseFromString(content)) {
+        return Error() << "Can't parse manifest file: " << manifest_path;
+    }
+    return manifest.name();
+}
+
+static Result<void> ActivateFlattenedApexesFrom(const std::string& from_dir,
+                                                const std::string& to_dir) {
+    std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(from_dir.c_str()), closedir);
+    if (!dir) {
+        return {};
+    }
+    dirent* entry;
+    while ((entry = readdir(dir.get())) != nullptr) {
+        if (entry->d_name[0] == '.') continue;
+        if (entry->d_type == DT_DIR) {
+            const std::string apex_path = from_dir + "/" + entry->d_name;
+            const auto apex_name = GetApexName(apex_path);
+            if (!apex_name.ok()) {
+                LOG(ERROR) << apex_path << " is not an APEX directory: " << apex_name.error();
+                continue;
+            }
+            const std::string mount_path = to_dir + "/" + (*apex_name);
+            if (auto result = MountDir(apex_path, mount_path); !result.ok()) {
+                return result;
+            }
+        }
+    }
+    return {};
+}
+
+static bool ActivateFlattenedApexesIfPossible() {
+    if (IsRecoveryMode() || IsApexUpdatable()) {
+        return true;
+    }
+
+    const std::string kApexTop = "/apex";
+    const std::vector<std::string> kBuiltinDirsForApexes = {
+            "/system/apex",
+            "/system_ext/apex",
+            "/product/apex",
+            "/vendor/apex",
+    };
+
+    for (const auto& dir : kBuiltinDirsForApexes) {
+        if (auto result = ActivateFlattenedApexesFrom(dir, kApexTop); !result.ok()) {
+            LOG(ERROR) << result.error();
+            return false;
+        }
+    }
+    return true;
+}
+
+static Result<void> MountLinkerConfigForDefaultNamespace() {
+    // No need to mount linkerconfig for default mount namespace if the path does not exist (which
+    // would mean it is already mounted)
+    if (access("/linkerconfig/default", 0) != 0) {
+        return {};
+    }
+
+    if (mount("/linkerconfig/default", "/linkerconfig", nullptr, MS_BIND | MS_REC, nullptr) != 0) {
+        return ErrnoError() << "Failed to mount linker configuration for default mount namespace.";
+    }
+
+    return {};
+}
+
 static android::base::unique_fd bootstrap_ns_fd;
 static android::base::unique_fd default_ns_fd;
 
@@ -100,6 +211,50 @@
     // the bootstrap namespace get APEXes from the read-only partition.
     if (!(MakePrivate("/apex"))) return false;
 
+    // /linkerconfig is a private mountpoint to give a different linker configuration
+    // based on the mount namespace. Subdirectory will be bind-mounted based on current mount
+    // namespace
+    if (!(MakePrivate("/linkerconfig"))) return false;
+
+    // The two mount namespaces present challenges for scoped storage, because
+    // vold, which is responsible for most of the mounting, lives in the
+    // bootstrap mount namespace, whereas most other daemons and all apps live
+    // in the default namespace.  Scoped storage has a need for a
+    // /mnt/installer view that is a slave bind mount of /mnt/user - in other
+    // words, all mounts under /mnt/user should automatically show up under
+    // /mnt/installer. However, additional mounts done under /mnt/installer
+    // should not propagate back to /mnt/user. In a single mount namespace
+    // this is easy to achieve, by simply marking the /mnt/installer a slave
+    // bind mount. Unfortunately, if /mnt/installer is only created and
+    // bind mounted after the two namespaces are created below, we end up
+    // with the following situation:
+    // /mnt/user and /mnt/installer share the same peer group in both the
+    // bootstrap and default namespaces. Marking /mnt/installer slave in either
+    // namespace means that it won't propagate events to the /mnt/installer in
+    // the other namespace, which is still something we require - vold is the
+    // one doing the mounting under /mnt/installer, and those mounts should
+    // show up in the default namespace as well.
+    //
+    // The simplest solution is to do the bind mount before the two namespaces
+    // are created: the effect is that in both namespaces, /mnt/installer is a
+    // slave to the /mnt/user mount, and at the same time /mnt/installer in the
+    // bootstrap namespace shares a peer group with /mnt/installer in the
+    // default namespace.
+    // /mnt/androidwritable is similar to /mnt/installer but serves for
+    // MOUNT_EXTERNAL_ANDROID_WRITABLE apps.
+    if (!mkdir_recursive("/mnt/user", 0755)) return false;
+    if (!mkdir_recursive("/mnt/installer", 0755)) return false;
+    if (!mkdir_recursive("/mnt/androidwritable", 0755)) return false;
+    if (!(BindMount("/mnt/user", "/mnt/installer", true))) return false;
+    if (!(BindMount("/mnt/user", "/mnt/androidwritable", true))) return false;
+    // First, make /mnt/installer and /mnt/androidwritable a slave bind mount
+    if (!(MakeSlave("/mnt/installer"))) return false;
+    if (!(MakeSlave("/mnt/androidwritable"))) return false;
+    // Then, make it shared again - effectively creating a new peer group, that
+    // will be inherited by new mount namespaces.
+    if (!(MakeShared("/mnt/installer"))) return false;
+    if (!(MakeShared("/mnt/androidwritable"))) return false;
+
     bootstrap_ns_fd.reset(OpenMountNamespace());
     bootstrap_ns_id = GetMountNamespaceId();
 
@@ -129,6 +284,8 @@
         default_ns_id = GetMountNamespaceId();
     }
 
+    success &= ActivateFlattenedApexesIfPossible();
+
     LOG(INFO) << "SetupMountNamespaces done";
     return success;
 }
@@ -143,6 +300,11 @@
             PLOG(ERROR) << "Failed to switch back to the default mount namespace.";
             return false;
         }
+
+        if (auto result = MountLinkerConfigForDefaultNamespace(); !result.ok()) {
+            LOG(ERROR) << result.error();
+            return false;
+        }
     }
 
     LOG(INFO) << "Switched to default mount namespace";
diff --git a/init/oneshot_on_test.cpp b/init/oneshot_on_test.cpp
new file mode 100644
index 0000000..650f065
--- /dev/null
+++ b/init/oneshot_on_test.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <chrono>
+
+#include <android-base/properties.h>
+
+using android::base::GetProperty;
+using android::base::SetProperty;
+using android::base::WaitForProperty;
+using namespace std::literals;
+
+TEST(init, oneshot_on) {
+    if (getuid() != 0) {
+        GTEST_SKIP() << "Skipping test, must be run as root.";
+        return;
+    }
+
+    // Bootanim shouldn't be running once the device has booted.
+    ASSERT_EQ("stopped", GetProperty("init.svc.bootanim", ""));
+
+    SetProperty("ctl.oneshot_off", "bootanim");
+    SetProperty("ctl.start", "bootanim");
+
+    // Bootanim exits quickly when the device is fully booted, so check that it goes back to the
+    // 'restarting' state that non-oneshot services enter once they've restarted.
+    EXPECT_TRUE(WaitForProperty("init.svc.bootanim", "restarting", 10s));
+
+    SetProperty("ctl.oneshot_on", "bootanim");
+    SetProperty("ctl.start", "bootanim");
+
+    // Now that oneshot is enabled again, bootanim should transition into the 'stopped' state.
+    EXPECT_TRUE(WaitForProperty("init.svc.bootanim", "stopped", 10s));
+}
diff --git a/init/parser.cpp b/init/parser.cpp
index bbfbdc6..507ee4a 100644
--- a/init/parser.cpp
+++ b/init/parser.cpp
@@ -37,7 +37,7 @@
 }
 
 void Parser::AddSingleLineParser(const std::string& prefix, LineCallback callback) {
-    line_callbacks_.emplace_back(prefix, callback);
+    line_callbacks_.emplace_back(prefix, std::move(callback));
 }
 
 void Parser::ParseData(const std::string& filename, std::string* data) {
@@ -61,7 +61,7 @@
         bad_section_found = false;
         if (section_parser == nullptr) return;
 
-        if (auto result = section_parser->EndSection(); !result) {
+        if (auto result = section_parser->EndSection(); !result.ok()) {
             parse_error_count_++;
             LOG(ERROR) << filename << ": " << section_start_line << ": " << result.error();
         }
@@ -92,7 +92,7 @@
                 if (line_callback != line_callbacks_.end()) {
                     end_section();
 
-                    if (auto result = line_callback->second(std::move(args)); !result) {
+                    if (auto result = line_callback->second(std::move(args)); !result.ok()) {
                         parse_error_count_++;
                         LOG(ERROR) << filename << ": " << state.line << ": " << result.error();
                     }
@@ -101,8 +101,8 @@
                     section_parser = section_parsers_[args[0]].get();
                     section_start_line = state.line;
                     if (auto result =
-                            section_parser->ParseSection(std::move(args), filename, state.line);
-                        !result) {
+                                section_parser->ParseSection(std::move(args), filename, state.line);
+                        !result.ok()) {
                         parse_error_count_++;
                         LOG(ERROR) << filename << ": " << state.line << ": " << result.error();
                         section_parser = nullptr;
@@ -110,7 +110,7 @@
                     }
                 } else if (section_parser) {
                     if (auto result = section_parser->ParseLineSection(std::move(args), state.line);
-                        !result) {
+                        !result.ok()) {
                         parse_error_count_++;
                         LOG(ERROR) << filename << ": " << state.line << ": " << result.error();
                     }
@@ -143,7 +143,7 @@
     LOG(INFO) << "Parsing file " << path << "...";
     android::base::Timer t;
     auto config_contents = ReadFile(path);
-    if (!config_contents) {
+    if (!config_contents.ok()) {
         LOG(INFO) << "Unable to read config file '" << path << "': " << config_contents.error();
         return false;
     }
diff --git a/init/parser.h b/init/parser.h
index f30bda7..95b0cd7 100644
--- a/init/parser.h
+++ b/init/parser.h
@@ -27,7 +27,7 @@
 //  SectionParser is an interface that can parse a given 'section' in init.
 //
 //  You can implement up to 4 functions below, with ParseSection being mandatory. The first two
-//  functions return Result<Success> indicating if they have an error. It will be reported along
+//  functions return Result<void> indicating if they have an error. It will be reported along
 //  with the filename and line number of where the error occurred.
 //
 //  1) ParseSection
@@ -51,10 +51,10 @@
 class SectionParser {
   public:
     virtual ~SectionParser() {}
-    virtual Result<Success> ParseSection(std::vector<std::string>&& args,
-                                         const std::string& filename, int line) = 0;
-    virtual Result<Success> ParseLineSection(std::vector<std::string>&&, int) { return Success(); };
-    virtual Result<Success> EndSection() { return Success(); };
+    virtual Result<void> ParseSection(std::vector<std::string>&& args, const std::string& filename,
+                                      int line) = 0;
+    virtual Result<void> ParseLineSection(std::vector<std::string>&&, int) { return {}; };
+    virtual Result<void> EndSection() { return {}; };
     virtual void EndFile(){};
 };
 
@@ -67,7 +67,7 @@
     //  Similar to ParseSection() and ParseLineSection(), this function returns bool with false
     //  indicating a failure and has an std::string* err parameter into which an error string can
     //  be written.
-    using LineCallback = std::function<Result<Success>(std::vector<std::string>&&)>;
+    using LineCallback = std::function<Result<void>(std::vector<std::string>&&)>;
 
     Parser();
 
diff --git a/init/persistent_properties.cpp b/init/persistent_properties.cpp
index 21adce9..716f62e 100644
--- a/init/persistent_properties.cpp
+++ b/init/persistent_properties.cpp
@@ -31,10 +31,11 @@
 
 #include "util.h"
 
+using android::base::Dirname;
 using android::base::ReadFdToString;
 using android::base::StartsWith;
-using android::base::WriteStringToFd;
 using android::base::unique_fd;
+using android::base::WriteStringToFd;
 
 namespace android {
 namespace init {
@@ -69,7 +70,7 @@
             continue;
         }
 
-        unique_fd fd(openat(dirfd(dir.get()), entry->d_name, O_RDONLY | O_NOFOLLOW));
+        unique_fd fd(openat(dirfd(dir.get()), entry->d_name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC));
         if (fd == -1) {
             PLOG(ERROR) << "Unable to open persistent property file \"" << entry->d_name << "\"";
             continue;
@@ -148,7 +149,7 @@
         unlink(temp_filename.c_str());
     }
     auto file_contents = ReadFile(persistent_property_filename);
-    if (!file_contents) {
+    if (!file_contents.ok()) {
         return Error() << "Unable to read persistent property file: " << file_contents.error();
     }
     return *file_contents;
@@ -158,7 +159,7 @@
 
 Result<PersistentProperties> LoadPersistentPropertyFile() {
     auto file_contents = ReadPersistentPropertyFile();
-    if (!file_contents) return file_contents.error();
+    if (!file_contents.ok()) return file_contents.error();
 
     PersistentProperties persistent_properties;
     if (persistent_properties.ParseFromString(*file_contents)) return persistent_properties;
@@ -169,7 +170,7 @@
     return Error() << "Unable to parse persistent property file: Could not parse protobuf";
 }
 
-Result<Success> WritePersistentPropertyFile(const PersistentProperties& persistent_properties) {
+Result<void> WritePersistentPropertyFile(const PersistentProperties& persistent_properties) {
     const std::string temp_filename = persistent_property_filename + ".tmp";
     unique_fd fd(TEMP_FAILURE_RETRY(
         open(temp_filename.c_str(), O_WRONLY | O_CREAT | O_NOFOLLOW | O_TRUNC | O_CLOEXEC, 0600)));
@@ -191,7 +192,19 @@
         unlink(temp_filename.c_str());
         return Error(saved_errno) << "Unable to rename persistent property file";
     }
-    return Success();
+
+    // rename() is atomic with regards to the kernel's filesystem buffers, but the parent
+    // directories must be fsync()'ed otherwise, the rename is not necessarily written to storage.
+    // Note in this case, that the source and destination directories are the same, so only one
+    // fsync() is required.
+    auto dir = Dirname(persistent_property_filename);
+    auto dir_fd = unique_fd{open(dir.c_str(), O_DIRECTORY | O_RDONLY | O_CLOEXEC)};
+    if (dir_fd < 0) {
+        return ErrnoError() << "Unable to open persistent properties directory for fsync()";
+    }
+    fsync(dir_fd);
+
+    return {};
 }
 
 // Persistent properties are not written often, so we rather not keep any data in memory and read
@@ -199,7 +212,7 @@
 void WritePersistentProperty(const std::string& name, const std::string& value) {
     auto persistent_properties = LoadPersistentPropertyFile();
 
-    if (!persistent_properties) {
+    if (!persistent_properties.ok()) {
         LOG(ERROR) << "Recovering persistent properties from memory: "
                    << persistent_properties.error();
         persistent_properties = LoadPersistentPropertiesFromMemory();
@@ -214,7 +227,7 @@
         AddPersistentProperty(name, value, &persistent_properties.value());
     }
 
-    if (auto result = WritePersistentPropertyFile(*persistent_properties); !result) {
+    if (auto result = WritePersistentPropertyFile(*persistent_properties); !result.ok()) {
         LOG(ERROR) << "Could not store persistent property: " << result.error();
     }
 }
@@ -222,16 +235,16 @@
 PersistentProperties LoadPersistentProperties() {
     auto persistent_properties = LoadPersistentPropertyFile();
 
-    if (!persistent_properties) {
+    if (!persistent_properties.ok()) {
         LOG(ERROR) << "Could not load single persistent property file, trying legacy directory: "
                    << persistent_properties.error();
         persistent_properties = LoadLegacyPersistentProperties();
-        if (!persistent_properties) {
+        if (!persistent_properties.ok()) {
             LOG(ERROR) << "Unable to load legacy persistent properties: "
                        << persistent_properties.error();
             return {};
         }
-        if (auto result = WritePersistentPropertyFile(*persistent_properties); result) {
+        if (auto result = WritePersistentPropertyFile(*persistent_properties); result.ok()) {
             RemoveLegacyPersistentPropertyFiles();
         } else {
             LOG(ERROR) << "Unable to write single persistent property file: " << result.error();
diff --git a/init/persistent_properties.h b/init/persistent_properties.h
index 5f4df85..3845a0d 100644
--- a/init/persistent_properties.h
+++ b/init/persistent_properties.h
@@ -30,7 +30,7 @@
 
 // Exposed only for testing
 Result<PersistentProperties> LoadPersistentPropertyFile();
-Result<Success> WritePersistentPropertyFile(const PersistentProperties& persistent_properties);
+Result<void> WritePersistentPropertyFile(const PersistentProperties& persistent_properties);
 extern std::string persistent_property_filename;
 
 }  // namespace init
diff --git a/init/persistent_properties_test.cpp b/init/persistent_properties_test.cpp
index 13796a6..60cecde 100644
--- a/init/persistent_properties_test.cpp
+++ b/init/persistent_properties_test.cpp
@@ -83,7 +83,8 @@
         {"persist.\x00\x01\x02\xFF\xFE\xFD\x7F\x8F\x9F", "non-ascii-name"},
     };
 
-    ASSERT_TRUE(WritePersistentPropertyFile(VectorToPersistentProperties(persistent_properties)));
+    ASSERT_RESULT_OK(
+            WritePersistentPropertyFile(VectorToPersistentProperties(persistent_properties)));
 
     auto read_back_properties = LoadPersistentProperties();
     CheckPropertiesEqual(persistent_properties, read_back_properties);
@@ -97,7 +98,8 @@
     std::vector<std::pair<std::string, std::string>> persistent_properties = {
         {"persist.sys.timezone", "America/Los_Angeles"},
     };
-    ASSERT_TRUE(WritePersistentPropertyFile(VectorToPersistentProperties(persistent_properties)));
+    ASSERT_RESULT_OK(
+            WritePersistentPropertyFile(VectorToPersistentProperties(persistent_properties)));
 
     WritePersistentProperty("persist.sys.locale", "pt-BR");
 
@@ -119,7 +121,8 @@
         {"persist.sys.locale", "en-US"},
         {"persist.sys.timezone", "America/Los_Angeles"},
     };
-    ASSERT_TRUE(WritePersistentPropertyFile(VectorToPersistentProperties(persistent_properties)));
+    ASSERT_RESULT_OK(
+            WritePersistentPropertyFile(VectorToPersistentProperties(persistent_properties)));
 
     WritePersistentProperty("persist.sys.locale", "pt-BR");
 
@@ -137,7 +140,7 @@
     ASSERT_TRUE(tf.fd != -1);
     persistent_property_filename = tf.path;
 
-    ASSERT_TRUE(WriteFile(tf.path, "ab"));
+    ASSERT_RESULT_OK(WriteFile(tf.path, "ab"));
 
     WritePersistentProperty("persist.sys.locale", "pt-BR");
 
diff --git a/init/property_service.cpp b/init/property_service.cpp
index f2c7462..a89504e 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -41,9 +41,13 @@
 
 #include <map>
 #include <memory>
+#include <mutex>
+#include <optional>
 #include <queue>
+#include <thread>
 #include <vector>
 
+#include <InitProperties.sysprop.h>
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
@@ -61,8 +65,10 @@
 #include "init.h"
 #include "persistent_properties.h"
 #include "property_type.h"
+#include "proto_utils.h"
 #include "selinux.h"
 #include "subcontext.h"
+#include "system/core/init/property_service.pb.h"
 #include "util.h"
 
 using namespace std::literals;
@@ -74,11 +80,13 @@
 using android::base::StringPrintf;
 using android::base::Timer;
 using android::base::Trim;
+using android::base::unique_fd;
 using android::base::WriteStringToFile;
 using android::properties::BuildTrie;
 using android::properties::ParsePropertyInfoFile;
 using android::properties::PropertyInfoAreaFile;
 using android::properties::PropertyInfoEntry;
+using android::sysprop::InitProperties::is_userspace_reboot_supported;
 
 namespace android {
 namespace init {
@@ -86,29 +94,40 @@
 static bool persistent_properties_loaded = false;
 
 static int property_set_fd = -1;
+static int from_init_socket = -1;
+static int init_socket = -1;
+static bool accept_messages = false;
+static std::mutex accept_messages_lock;
+static std::thread property_service_thread;
 
 static PropertyInfoAreaFile property_info_area;
 
-uint32_t InitPropertySet(const std::string& name, const std::string& value);
-
-uint32_t (*property_set)(const std::string& name, const std::string& value) = InitPropertySet;
-
-void CreateSerializedPropertyInfo();
-
 struct PropertyAuditData {
     const ucred* cr;
     const char* name;
 };
 
-void property_init() {
-    mkdir("/dev/__properties__", S_IRWXU | S_IXGRP | S_IXOTH);
-    CreateSerializedPropertyInfo();
-    if (__system_property_area_init()) {
-        LOG(FATAL) << "Failed to initialize property area";
+static int PropertyAuditCallback(void* data, security_class_t /*cls*/, char* buf, size_t len) {
+    auto* d = reinterpret_cast<PropertyAuditData*>(data);
+
+    if (!d || !d->name || !d->cr) {
+        LOG(ERROR) << "AuditCallback invoked with null data arguments!";
+        return 0;
     }
-    if (!property_info_area.LoadDefaultPath()) {
-        LOG(FATAL) << "Failed to load serialized property info file";
-    }
+
+    snprintf(buf, len, "property=%s pid=%d uid=%d gid=%d", d->name, d->cr->pid, d->cr->uid,
+             d->cr->gid);
+    return 0;
+}
+
+void StartSendingMessages() {
+    auto lock = std::lock_guard{accept_messages_lock};
+    accept_messages = true;
+}
+
+void StopSendingMessages() {
+    auto lock = std::lock_guard{accept_messages_lock};
+    accept_messages = false;
 }
 
 bool CanReadProperty(const std::string& source_context, const std::string& name) {
@@ -151,13 +170,8 @@
         return PROP_ERROR_INVALID_NAME;
     }
 
-    if (valuelen >= PROP_VALUE_MAX && !StartsWith(name, "ro.")) {
-        *error = "Property value too long";
-        return PROP_ERROR_INVALID_VALUE;
-    }
-
-    if (mbstowcs(nullptr, value.data(), 0) == static_cast<std::size_t>(-1)) {
-        *error = "Value is not a UTF8 encoded string";
+    if (auto result = IsLegalPropertyValue(name, value); !result.ok()) {
+        *error = result.error().message();
         return PROP_ERROR_INVALID_VALUE;
     }
 
@@ -183,112 +197,55 @@
     if (persistent_properties_loaded && StartsWith(name, "persist.")) {
         WritePersistentProperty(name, value);
     }
-    property_changed(name, value);
+    // If init hasn't started its main loop, then it won't be handling property changed messages
+    // anyway, so there's no need to try to send them.
+    auto lock = std::lock_guard{accept_messages_lock};
+    if (accept_messages) {
+        PropertyChanged(name, value);
+    }
     return PROP_SUCCESS;
 }
 
-typedef int (*PropertyAsyncFunc)(const std::string&, const std::string&);
+class AsyncRestorecon {
+  public:
+    void TriggerRestorecon(const std::string& path) {
+        auto guard = std::lock_guard{mutex_};
+        paths_.emplace(path);
 
-struct PropertyChildInfo {
-    pid_t pid;
-    PropertyAsyncFunc func;
-    std::string name;
-    std::string value;
+        if (!thread_started_) {
+            thread_started_ = true;
+            std::thread{&AsyncRestorecon::ThreadFunction, this}.detach();
+        }
+    }
+
+  private:
+    void ThreadFunction() {
+        auto lock = std::unique_lock{mutex_};
+
+        while (!paths_.empty()) {
+            auto path = paths_.front();
+            paths_.pop();
+
+            lock.unlock();
+            if (selinux_android_restorecon(path.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) {
+                LOG(ERROR) << "Asynchronous restorecon of '" << path << "' failed'";
+            }
+            android::base::SetProperty(kRestoreconProperty, path);
+            lock.lock();
+        }
+
+        thread_started_ = false;
+    }
+
+    std::mutex mutex_;
+    std::queue<std::string> paths_;
+    bool thread_started_ = false;
 };
 
-static std::queue<PropertyChildInfo> property_children;
-
-static void PropertyChildLaunch() {
-    auto& info = property_children.front();
-    pid_t pid = fork();
-    if (pid < 0) {
-        LOG(ERROR) << "Failed to fork for property_set_async";
-        while (!property_children.empty()) {
-            property_children.pop();
-        }
-        return;
-    }
-    if (pid != 0) {
-        info.pid = pid;
-    } else {
-        if (info.func(info.name, info.value) != 0) {
-            LOG(ERROR) << "property_set_async(\"" << info.name << "\", \"" << info.value
-                       << "\") failed";
-        }
-        _exit(0);
-    }
-}
-
-bool PropertyChildReap(pid_t pid) {
-    if (property_children.empty()) {
-        return false;
-    }
-    auto& info = property_children.front();
-    if (info.pid != pid) {
-        return false;
-    }
-    std::string error;
-    if (PropertySet(info.name, info.value, &error) != PROP_SUCCESS) {
-        LOG(ERROR) << "Failed to set async property " << info.name << " to " << info.value << ": "
-                   << error;
-    }
-    property_children.pop();
-    if (!property_children.empty()) {
-        PropertyChildLaunch();
-    }
-    return true;
-}
-
-static uint32_t PropertySetAsync(const std::string& name, const std::string& value,
-                                 PropertyAsyncFunc func, std::string* error) {
-    if (value.empty()) {
-        return PropertySet(name, value, error);
-    }
-
-    PropertyChildInfo info;
-    info.func = func;
-    info.name = name;
-    info.value = value;
-    property_children.push(info);
-    if (property_children.size() == 1) {
-        PropertyChildLaunch();
-    }
-    return PROP_SUCCESS;
-}
-
-static int RestoreconRecursiveAsync(const std::string& name, const std::string& value) {
-    return selinux_android_restorecon(value.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE);
-}
-
-uint32_t InitPropertySet(const std::string& name, const std::string& value) {
-    if (StartsWith(name, "ctl.")) {
-        LOG(ERROR) << "InitPropertySet: Do not set ctl. properties from init; call the Service "
-                      "functions directly";
-        return PROP_ERROR_INVALID_NAME;
-    }
-    if (name == "selinux.restorecon_recursive") {
-        LOG(ERROR) << "InitPropertySet: Do not set selinux.restorecon_recursive from init; use the "
-                      "restorecon builtin directly";
-        return PROP_ERROR_INVALID_NAME;
-    }
-
-    uint32_t result = 0;
-    ucred cr = {.pid = 1, .uid = 0, .gid = 0};
-    std::string error;
-    result = HandlePropertySet(name, value, kInitContext.c_str(), cr, &error);
-    if (result != PROP_SUCCESS) {
-        LOG(ERROR) << "Init cannot set '" << name << "' to '" << value << "': " << error;
-    }
-
-    return result;
-}
-
 class SocketConnection {
   public:
     SocketConnection(int socket, const ucred& cred) : socket_(socket), cred_(cred) {}
 
-    ~SocketConnection() { close(socket_); }
-
     bool RecvUint32(uint32_t* value, uint32_t* timeout_ms) {
         return RecvFully(value, sizeof(*value), timeout_ms);
     }
@@ -325,22 +282,27 @@
     }
 
     bool SendUint32(uint32_t value) {
+        if (!socket_.ok()) {
+            return true;
+        }
         int result = TEMP_FAILURE_RETRY(send(socket_, &value, sizeof(value), 0));
         return result == sizeof(value);
     }
 
-    int socket() { return socket_; }
+    bool GetSourceContext(std::string* source_context) const {
+        char* c_source_context = nullptr;
+        if (getpeercon(socket_, &c_source_context) != 0) {
+            return false;
+        }
+        *source_context = c_source_context;
+        freecon(c_source_context);
+        return true;
+    }
+
+    [[nodiscard]] int Release() { return socket_.release(); }
 
     const ucred& cred() { return cred_; }
 
-    std::string source_context() const {
-        char* source_context = nullptr;
-        getpeercon(socket_, &source_context);
-        std::string result = source_context;
-        freecon(source_context);
-        return result;
-    }
-
   private:
     bool PollIn(uint32_t* timeout_ms) {
         struct pollfd ufds[1];
@@ -408,12 +370,37 @@
         return bytes_left == 0;
     }
 
-    int socket_;
+    unique_fd socket_;
     ucred cred_;
 
     DISALLOW_IMPLICIT_CONSTRUCTORS(SocketConnection);
 };
 
+static uint32_t SendControlMessage(const std::string& msg, const std::string& name, pid_t pid,
+                                   SocketConnection* socket, std::string* error) {
+    auto lock = std::lock_guard{accept_messages_lock};
+    if (!accept_messages) {
+        *error = "Received control message after shutdown, ignoring";
+        return PROP_ERROR_HANDLE_CONTROL_MESSAGE;
+    }
+
+    // We must release the fd before sending it to init, otherwise there will be a race with init.
+    // If init calls close() before Release(), then fdsan will see the wrong tag and abort().
+    int fd = -1;
+    if (socket != nullptr && SelinuxGetVendorAndroidVersion() > __ANDROID_API_Q__) {
+        fd = socket->Release();
+    }
+
+    bool queue_success = QueueControlMessage(msg, name, pid, fd);
+    if (!queue_success && fd != -1) {
+        uint32_t response = PROP_ERROR_HANDLE_CONTROL_MESSAGE;
+        TEMP_FAILURE_RETRY(send(fd, &response, sizeof(response), 0));
+        close(fd);
+    }
+
+    return PROP_SUCCESS;
+}
+
 bool CheckControlPropertyPerms(const std::string& name, const std::string& value,
                                const std::string& source_context, const ucred& cr) {
     // We check the legacy method first but these properties are dontaudit, so we only log an audit
@@ -470,7 +457,7 @@
         return PROP_ERROR_PERMISSION_DENIED;
     }
 
-    if (type == nullptr || !CheckType(type, value)) {
+    if (!CheckType(type, value)) {
         *error = StringPrintf("Property type check failed, value doesn't match expected type '%s'",
                               (type ?: "(null)"));
         return PROP_ERROR_INVALID_VALUE;
@@ -481,14 +468,14 @@
 
 // This returns one of the enum of PROP_SUCCESS or PROP_ERROR*.
 uint32_t HandlePropertySet(const std::string& name, const std::string& value,
-                           const std::string& source_context, const ucred& cr, std::string* error) {
+                           const std::string& source_context, const ucred& cr,
+                           SocketConnection* socket, std::string* error) {
     if (auto ret = CheckPermissions(name, value, source_context, cr, error); ret != PROP_SUCCESS) {
         return ret;
     }
 
     if (StartsWith(name, "ctl.")) {
-        HandleControlMessage(name.c_str() + 4, value, cr.pid);
-        return PROP_SUCCESS;
+        return SendControlMessage(name.c_str() + 4, value, cr.pid, socket, error);
     }
 
     // sys.powerctl is a special property that is used to make the device reboot.  We want to log
@@ -504,10 +491,20 @@
         }
         LOG(INFO) << "Received sys.powerctl='" << value << "' from pid: " << cr.pid
                   << process_log_string;
+        if (value == "reboot,userspace" && !is_userspace_reboot_supported().value_or(false)) {
+            *error = "Userspace reboot is not supported by this device";
+            return PROP_ERROR_INVALID_VALUE;
+        }
     }
 
-    if (name == "selinux.restorecon_recursive") {
-        return PropertySetAsync(name, value, RestoreconRecursiveAsync, error);
+    // If a process other than init is writing a non-empty value, it means that process is
+    // requesting that init performs a restorecon operation on the path specified by 'value'.
+    // We use a thread to do this restorecon operation to prevent holding up init, as it may take
+    // a long time to complete.
+    if (name == kRestoreconProperty && cr.pid != 1 && !value.empty()) {
+        static AsyncRestorecon async_restorecon;
+        async_restorecon.TriggerRestorecon(value);
+        return PROP_SUCCESS;
     }
 
     return PropertySet(name, value, error);
@@ -553,14 +550,19 @@
         prop_name[PROP_NAME_MAX-1] = 0;
         prop_value[PROP_VALUE_MAX-1] = 0;
 
+        std::string source_context;
+        if (!socket.GetSourceContext(&source_context)) {
+            PLOG(ERROR) << "Unable to set property '" << prop_name << "': getpeercon() failed";
+            return;
+        }
+
         const auto& cr = socket.cred();
         std::string error;
         uint32_t result =
-            HandlePropertySet(prop_name, prop_value, socket.source_context(), cr, &error);
+                HandlePropertySet(prop_name, prop_value, source_context, cr, nullptr, &error);
         if (result != PROP_SUCCESS) {
-            LOG(ERROR) << "Unable to set property '" << prop_name << "' to '" << prop_value
-                       << "' from uid:" << cr.uid << " gid:" << cr.gid << " pid:" << cr.pid << ": "
-                       << error;
+            LOG(ERROR) << "Unable to set property '" << prop_name << "' from uid:" << cr.uid
+                       << " gid:" << cr.gid << " pid:" << cr.pid << ": " << error;
         }
 
         break;
@@ -576,13 +578,19 @@
           return;
         }
 
+        std::string source_context;
+        if (!socket.GetSourceContext(&source_context)) {
+            PLOG(ERROR) << "Unable to set property '" << name << "': getpeercon() failed";
+            socket.SendUint32(PROP_ERROR_PERMISSION_DENIED);
+            return;
+        }
+
         const auto& cr = socket.cred();
         std::string error;
-        uint32_t result = HandlePropertySet(name, value, socket.source_context(), cr, &error);
+        uint32_t result = HandlePropertySet(name, value, source_context, cr, &socket, &error);
         if (result != PROP_SUCCESS) {
-            LOG(ERROR) << "Unable to set property '" << name << "' to '" << value
-                       << "' from uid:" << cr.uid << " gid:" << cr.gid << " pid:" << cr.pid << ": "
-                       << error;
+            LOG(ERROR) << "Unable to set property '" << name << "' from uid:" << cr.uid
+                       << " gid:" << cr.gid << " pid:" << cr.pid << ": " << error;
         }
         socket.SendUint32(result);
         break;
@@ -595,6 +603,18 @@
     }
 }
 
+uint32_t InitPropertySet(const std::string& name, const std::string& value) {
+    uint32_t result = 0;
+    ucred cr = {.pid = 1, .uid = 0, .gid = 0};
+    std::string error;
+    result = HandlePropertySet(name, value, kInitContext, cr, nullptr, &error);
+    if (result != PROP_SUCCESS) {
+        LOG(ERROR) << "Init cannot set '" << name << "' to '" << value << "': " << error;
+    }
+
+    return result;
+}
+
 static bool load_properties_from_file(const char*, const char*,
                                       std::map<std::string, std::string>*);
 
@@ -607,11 +627,16 @@
     char *key, *value, *eol, *sol, *tmp, *fn;
     size_t flen = 0;
 
-    const char* context = kInitContext.c_str();
+    static constexpr const char* const kVendorPathPrefixes[2] = {
+            "/vendor",
+            "/odm",
+    };
+
+    const char* context = kInitContext;
     if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_P__) {
-        for (const auto& [path_prefix, secontext] : paths_and_secontexts) {
-            if (StartsWith(filename, path_prefix)) {
-                context = secontext;
+        for (const auto& vendor_path_prefix : kVendorPathPrefixes) {
+            if (StartsWith(filename, vendor_path_prefix)) {
+                context = kVendorContext;
             }
         }
     }
@@ -643,13 +668,14 @@
             }
 
             std::string raw_filename(fn);
-            std::string expanded_filename;
-            if (!expand_props(raw_filename, &expanded_filename)) {
-                LOG(ERROR) << "Could not expand filename '" << raw_filename << "'";
+            auto expanded_filename = ExpandProps(raw_filename);
+
+            if (!expanded_filename.ok()) {
+                LOG(ERROR) << "Could not expand filename ': " << expanded_filename.error();
                 continue;
             }
 
-            load_properties_from_file(expanded_filename.c_str(), key, properties);
+            load_properties_from_file(expanded_filename->c_str(), key, properties);
         } else {
             value = strchr(key, '=');
             if (!value) continue;
@@ -662,14 +688,14 @@
 
             if (flen > 0) {
                 if (filter[flen - 1] == '*') {
-                    if (strncmp(key, filter, flen - 1)) continue;
+                    if (strncmp(key, filter, flen - 1) != 0) continue;
                 } else {
-                    if (strcmp(key, filter)) continue;
+                    if (strcmp(key, filter) != 0) continue;
                 }
             }
 
             if (StartsWith(key, "ctl.") || key == "sys.powerctl"s ||
-                key == "selinux.restorecon_recursive"s) {
+                std::string{key} == kRestoreconProperty) {
                 LOG(ERROR) << "Ignoring disallowed property '" << key
                            << "' with special meaning in prop file '" << filename << "'";
                 continue;
@@ -700,7 +726,7 @@
                                       std::map<std::string, std::string>* properties) {
     Timer t;
     auto file_contents = ReadFile(filename);
-    if (!file_contents) {
+    if (!file_contents.ok()) {
         PLOG(WARNING) << "Couldn't load property file '" << filename
                       << "': " << file_contents.error();
         return false;
@@ -719,12 +745,14 @@
 static void update_sys_usb_config() {
     bool is_debuggable = android::base::GetBoolProperty("ro.debuggable", false);
     std::string config = android::base::GetProperty("persist.sys.usb.config", "");
-    if (config.empty()) {
-        property_set("persist.sys.usb.config", is_debuggable ? "adb" : "none");
+    // b/150130503, add (config == "none") condition here to prevent appending
+    // ",adb" if "none" is explicitly defined in default prop.
+    if (config.empty() || config == "none") {
+        InitPropertySet("persist.sys.usb.config", is_debuggable ? "adb" : "none");
     } else if (is_debuggable && config.find("adb") == std::string::npos &&
                config.length() + 4 < PROP_VALUE_MAX) {
         config.append(",adb");
-        property_set("persist.sys.usb.config", config);
+        InitPropertySet("persist.sys.usb.config", config);
     }
 }
 
@@ -742,33 +770,6 @@
     }
 }
 
-/* When booting an encrypted system, /data is not mounted when the
- * property service is started, so any properties stored there are
- * not loaded.  Vold triggers init to load these properties once it
- * has mounted /data.
- */
-void load_persist_props(void) {
-    // Devices with FDE have load_persist_props called twice; the first time when the temporary
-    // /data partition is mounted and then again once /data is truly mounted.  We do not want to
-    // read persistent properties from the temporary /data partition or mark persistent properties
-    // as having been loaded during the first call, so we return in that case.
-    std::string crypto_state = android::base::GetProperty("ro.crypto.state", "");
-    std::string crypto_type = android::base::GetProperty("ro.crypto.type", "");
-    if (crypto_state == "encrypted" && crypto_type == "block") {
-        static size_t num_calls = 0;
-        if (++num_calls == 1) return;
-    }
-
-    load_override_properties();
-    /* Read persistent properties after all default values have been loaded. */
-    auto persistent_properties = LoadPersistentProperties();
-    for (const auto& persistent_property_record : persistent_properties.properties()) {
-        property_set(persistent_property_record.name(), persistent_property_record.value());
-    }
-    persistent_properties_loaded = true;
-    property_set("ro.persistent_properties.ready", "true");
-}
-
 // If the ro.product.[brand|device|manufacturer|model|name] properties have not been explicitly
 // set, derive them from ro.product.${partition}.* properties
 static void property_initialize_ro_product_props() {
@@ -777,10 +778,9 @@
             "brand", "device", "manufacturer", "model", "name",
     };
     const char* RO_PRODUCT_PROPS_ALLOWED_SOURCES[] = {
-            "odm", "product", "product_services", "system", "vendor",
+            "odm", "product", "system_ext", "system", "vendor",
     };
-    const char* RO_PRODUCT_PROPS_DEFAULT_SOURCE_ORDER =
-            "product,product_services,odm,vendor,system";
+    const char* RO_PRODUCT_PROPS_DEFAULT_SOURCE_ORDER = "product,odm,vendor,system_ext,system";
     const std::string EMPTY = "";
 
     std::string ro_product_props_source_order =
@@ -873,7 +873,7 @@
     }
 }
 
-void property_load_boot_defaults(bool load_debug_prop) {
+void PropertyLoadBootDefaults() {
     // TODO(b/117892318): merge prop.default and build.prop files into one
     // We read the properties and their values into a map, in order to always allow properties
     // loaded in the later property files to override the properties in loaded in the earlier
@@ -887,6 +887,7 @@
         }
     }
     load_properties_from_file("/system/build.prop", nullptr, &properties);
+    load_properties_from_file("/system_ext/build.prop", nullptr, &properties);
     load_properties_from_file("/vendor/default.prop", nullptr, &properties);
     load_properties_from_file("/vendor/build.prop", nullptr, &properties);
     if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_Q__) {
@@ -896,10 +897,9 @@
         load_properties_from_file("/odm/build.prop", nullptr, &properties);
     }
     load_properties_from_file("/product/build.prop", nullptr, &properties);
-    load_properties_from_file("/product_services/build.prop", nullptr, &properties);
     load_properties_from_file("/factory/factory.prop", "ro.*", &properties);
 
-    if (load_debug_prop) {
+    if (access(kDebugRamdiskProp, R_OK) == 0) {
         LOG(INFO) << "Loading " << kDebugRamdiskProp;
         load_properties_from_file(kDebugRamdiskProp, nullptr, &properties);
     }
@@ -918,19 +918,6 @@
     update_sys_usb_config();
 }
 
-static int SelinuxAuditCallback(void* data, security_class_t /*cls*/, char* buf, size_t len) {
-    auto* d = reinterpret_cast<PropertyAuditData*>(data);
-
-    if (!d || !d->name || !d->cr) {
-        LOG(ERROR) << "AuditCallback invoked with null data arguments!";
-        return 0;
-    }
-
-    snprintf(buf, len, "property=%s pid=%d uid=%d gid=%d", d->name, d->cr->pid, d->cr->uid,
-             d->cr->gid);
-    return 0;
-}
-
 bool LoadPropertyInfoFromFile(const std::string& filename,
                               std::vector<PropertyInfoEntry>* property_infos) {
     auto file_contents = std::string();
@@ -940,7 +927,8 @@
     }
 
     auto errors = std::vector<std::string>{};
-    ParsePropertyInfoFile(file_contents, property_infos, &errors);
+    bool require_prefix_or_exact = SelinuxGetVendorAndroidVersion() >= __ANDROID_API_R__;
+    ParsePropertyInfoFile(file_contents, require_prefix_or_exact, property_infos, &errors);
     // Individual parsing errors are reported but do not cause a failed boot, which is what
     // returning false would do here.
     for (const auto& error : errors) {
@@ -960,6 +948,10 @@
         // Don't check for failure here, so we always have a sane list of properties.
         // E.g. In case of recovery, the vendor partition will not have mounted and we
         // still need the system / platform properties to function.
+        if (access("/system_ext/etc/selinux/system_ext_property_contexts", R_OK) != -1) {
+            LoadPropertyInfoFromFile("/system_ext/etc/selinux/system_ext_property_contexts",
+                                     &property_infos);
+        }
         if (!LoadPropertyInfoFromFile("/vendor/etc/selinux/vendor_property_contexts",
                                       &property_infos)) {
             // Fallback to nonplat_* if vendor_* doesn't exist.
@@ -977,6 +969,7 @@
         if (!LoadPropertyInfoFromFile("/plat_property_contexts", &property_infos)) {
             return;
         }
+        LoadPropertyInfoFromFile("/system_ext_property_contexts", &property_infos);
         if (!LoadPropertyInfoFromFile("/vendor_property_contexts", &property_infos)) {
             // Fallback to nonplat_* if vendor_* doesn't exist.
             LoadPropertyInfoFromFile("/nonplat_property_contexts", &property_infos);
@@ -1000,24 +993,178 @@
     selinux_android_restorecon(kPropertyInfosPath, 0);
 }
 
-void StartPropertyService(Epoll* epoll) {
+static void ExportKernelBootProps() {
+    constexpr const char* UNSET = "";
+    struct {
+        const char* src_prop;
+        const char* dst_prop;
+        const char* default_value;
+    } prop_map[] = {
+            // clang-format off
+        { "ro.boot.serialno",   "ro.serialno",   UNSET, },
+        { "ro.boot.mode",       "ro.bootmode",   "unknown", },
+        { "ro.boot.baseband",   "ro.baseband",   "unknown", },
+        { "ro.boot.bootloader", "ro.bootloader", "unknown", },
+        { "ro.boot.hardware",   "ro.hardware",   "unknown", },
+        { "ro.boot.revision",   "ro.revision",   "0", },
+            // clang-format on
+    };
+    for (const auto& prop : prop_map) {
+        std::string value = GetProperty(prop.src_prop, prop.default_value);
+        if (value != UNSET) InitPropertySet(prop.dst_prop, value);
+    }
+}
+
+static void ProcessKernelDt() {
+    if (!is_android_dt_value_expected("compatible", "android,firmware")) {
+        return;
+    }
+
+    std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir(get_android_dt_dir().c_str()), closedir);
+    if (!dir) return;
+
+    std::string dt_file;
+    struct dirent* dp;
+    while ((dp = readdir(dir.get())) != NULL) {
+        if (dp->d_type != DT_REG || !strcmp(dp->d_name, "compatible") ||
+            !strcmp(dp->d_name, "name")) {
+            continue;
+        }
+
+        std::string file_name = get_android_dt_dir() + dp->d_name;
+
+        android::base::ReadFileToString(file_name, &dt_file);
+        std::replace(dt_file.begin(), dt_file.end(), ',', '.');
+
+        InitPropertySet("ro.boot."s + dp->d_name, dt_file);
+    }
+}
+
+static void ProcessKernelCmdline() {
+    bool for_emulator = false;
+    ImportKernelCmdline([&](const std::string& key, const std::string& value) {
+        if (key == "qemu") {
+            for_emulator = true;
+        } else if (StartsWith(key, "androidboot.")) {
+            InitPropertySet("ro.boot." + key.substr(12), value);
+        }
+    });
+
+    if (for_emulator) {
+        ImportKernelCmdline([&](const std::string& key, const std::string& value) {
+            // In the emulator, export any kernel option with the "ro.kernel." prefix.
+            InitPropertySet("ro.kernel." + key, value);
+        });
+    }
+}
+
+void PropertyInit() {
     selinux_callback cb;
-    cb.func_audit = SelinuxAuditCallback;
+    cb.func_audit = PropertyAuditCallback;
     selinux_set_callback(SELINUX_CB_AUDIT, cb);
 
-    property_set("ro.property_service.version", "2");
+    mkdir("/dev/__properties__", S_IRWXU | S_IXGRP | S_IXOTH);
+    CreateSerializedPropertyInfo();
+    if (__system_property_area_init()) {
+        LOG(FATAL) << "Failed to initialize property area";
+    }
+    if (!property_info_area.LoadDefaultPath()) {
+        LOG(FATAL) << "Failed to load serialized property info file";
+    }
 
-    property_set_fd = CreateSocket(PROP_SERVICE_NAME, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
-                                   false, 0666, 0, 0, nullptr);
-    if (property_set_fd == -1) {
-        PLOG(FATAL) << "start_property_service socket creation failed";
+    // If arguments are passed both on the command line and in DT,
+    // properties set in DT always have priority over the command-line ones.
+    ProcessKernelDt();
+    ProcessKernelCmdline();
+
+    // Propagate the kernel variables to internal variables
+    // used by init as well as the current required properties.
+    ExportKernelBootProps();
+
+    PropertyLoadBootDefaults();
+}
+
+static void HandleInitSocket() {
+    auto message = ReadMessage(init_socket);
+    if (!message.ok()) {
+        LOG(ERROR) << "Could not read message from init_dedicated_recv_socket: " << message.error();
+        return;
+    }
+
+    auto init_message = InitMessage{};
+    if (!init_message.ParseFromString(*message)) {
+        LOG(ERROR) << "Could not parse message from init";
+        return;
+    }
+
+    switch (init_message.msg_case()) {
+        case InitMessage::kLoadPersistentProperties: {
+            load_override_properties();
+            // Read persistent properties after all default values have been loaded.
+            auto persistent_properties = LoadPersistentProperties();
+            for (const auto& persistent_property_record : persistent_properties.properties()) {
+                InitPropertySet(persistent_property_record.name(),
+                                persistent_property_record.value());
+            }
+            InitPropertySet("ro.persistent_properties.ready", "true");
+            persistent_properties_loaded = true;
+            break;
+        }
+        default:
+            LOG(ERROR) << "Unknown message type from init: " << init_message.msg_case();
+    }
+}
+
+static void PropertyServiceThread() {
+    Epoll epoll;
+    if (auto result = epoll.Open(); !result.ok()) {
+        LOG(FATAL) << result.error();
+    }
+
+    if (auto result = epoll.RegisterHandler(property_set_fd, handle_property_set_fd);
+        !result.ok()) {
+        LOG(FATAL) << result.error();
+    }
+
+    if (auto result = epoll.RegisterHandler(init_socket, HandleInitSocket); !result.ok()) {
+        LOG(FATAL) << result.error();
+    }
+
+    while (true) {
+        auto pending_functions = epoll.Wait(std::nullopt);
+        if (!pending_functions.ok()) {
+            LOG(ERROR) << pending_functions.error();
+        } else {
+            for (const auto& function : *pending_functions) {
+                (*function)();
+            }
+        }
+    }
+}
+
+void StartPropertyService(int* epoll_socket) {
+    InitPropertySet("ro.property_service.version", "2");
+
+    int sockets[2];
+    if (socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC, 0, sockets) != 0) {
+        PLOG(FATAL) << "Failed to socketpair() between property_service and init";
+    }
+    *epoll_socket = from_init_socket = sockets[0];
+    init_socket = sockets[1];
+    StartSendingMessages();
+
+    if (auto result = CreateSocket(PROP_SERVICE_NAME, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
+                                   false, 0666, 0, 0, {});
+        result.ok()) {
+        property_set_fd = *result;
+    } else {
+        LOG(FATAL) << "start_property_service socket creation failed: " << result.error();
     }
 
     listen(property_set_fd, 8);
 
-    if (auto result = epoll->RegisterHandler(property_set_fd, handle_property_set_fd); !result) {
-        PLOG(FATAL) << result.error();
-    }
+    auto new_thread = std::thread{PropertyServiceThread};
+    property_service_thread.swap(new_thread);
 }
 
 }  // namespace init
diff --git a/init/property_service.h b/init/property_service.h
index 85e7bc0..2d49a36 100644
--- a/init/property_service.h
+++ b/init/property_service.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_PROPERTY_H
-#define _INIT_PROPERTY_H
+#pragma once
 
 #include <sys/socket.h>
 
@@ -26,22 +25,15 @@
 namespace android {
 namespace init {
 
+static constexpr const char kRestoreconProperty[] = "selinux.restorecon_recursive";
+
 bool CanReadProperty(const std::string& source_context, const std::string& name);
 
-extern uint32_t (*property_set)(const std::string& name, const std::string& value);
+void PropertyInit();
+void StartPropertyService(int* epoll_socket);
 
-uint32_t HandlePropertySet(const std::string& name, const std::string& value,
-                           const std::string& source_context, const ucred& cr, std::string* error);
-
-extern bool PropertyChildReap(pid_t pid);
-
-void property_init(void);
-void property_load_boot_defaults(bool);
-void load_persist_props(void);
-void load_system_props(void);
-void StartPropertyService(Epoll* epoll);
+void StartSendingMessages();
+void StopSendingMessages();
 
 }  // namespace init
 }  // namespace android
-
-#endif  /* _INIT_PROPERTY_H */
diff --git a/init/property_service.proto b/init/property_service.proto
new file mode 100644
index 0000000..08268d9
--- /dev/null
+++ b/init/property_service.proto
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+option optimize_for = LITE_RUNTIME;
+
+message PropertyMessage {
+    message ControlMessage {
+        optional string msg = 1;
+        optional string name = 2;
+        optional int32 pid = 3;
+        optional int32 fd = 4;
+    }
+
+    message ChangedMessage {
+        optional string name = 1;
+        optional string value = 2;
+    }
+
+    oneof msg {
+        ControlMessage control_message = 1;
+        ChangedMessage changed_message = 2;
+    };
+}
+
+message InitMessage {
+    oneof msg {
+        bool load_persistent_properties = 1;
+        bool stop_sending_messages = 2;
+        bool start_sending_messages = 3;
+    };
+}
diff --git a/init/property_service_test.cpp b/init/property_service_test.cpp
index c038aff..c6dcfa2 100644
--- a/init/property_service_test.cpp
+++ b/init/property_service_test.cpp
@@ -22,8 +22,10 @@
 #include <sys/_system_properties.h>
 
 #include <android-base/properties.h>
+#include <android-base/scopeguard.h>
 #include <gtest/gtest.h>
 
+using android::base::GetProperty;
 using android::base::SetProperty;
 
 namespace android {
@@ -56,6 +58,11 @@
 }
 
 TEST(property_service, non_utf8_value) {
+    if (getuid() != 0) {
+        GTEST_SKIP() << "Skipping test, must be run as root.";
+        return;
+    }
+
     ASSERT_TRUE(SetProperty("property_service_utf8_test", "base_success"));
     EXPECT_FALSE(SetProperty("property_service_utf8_test", "\x80"));
     EXPECT_FALSE(SetProperty("property_service_utf8_test", "\xC2\x01"));
@@ -69,5 +76,19 @@
     EXPECT_TRUE(SetProperty("property_service_utf8_test", "\xF0\x90\x80\x80"));
 }
 
+TEST(property_service, userspace_reboot_not_supported) {
+    if (getuid() != 0) {
+        GTEST_SKIP() << "Skipping test, must be run as root.";
+        return;
+    }
+    const std::string original_value = GetProperty("init.userspace_reboot.is_supported", "");
+    auto guard = android::base::make_scope_guard([&original_value]() {
+        SetProperty("init.userspace_reboot.is_supported", original_value);
+    });
+
+    ASSERT_TRUE(SetProperty("init.userspace_reboot.is_supported", "false"));
+    EXPECT_FALSE(SetProperty("sys.powerctl", "reboot,userspace"));
+}
+
 }  // namespace init
 }  // namespace android
diff --git a/init/proto_utils.h b/init/proto_utils.h
new file mode 100644
index 0000000..93a7d57
--- /dev/null
+++ b/init/proto_utils.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <string>
+
+#include "result.h"
+
+namespace android {
+namespace init {
+
+constexpr size_t kBufferSize = 4096;
+
+inline Result<std::string> ReadMessage(int socket) {
+    char buffer[kBufferSize] = {};
+    auto result = TEMP_FAILURE_RETRY(recv(socket, buffer, sizeof(buffer), 0));
+    if (result == 0) {
+        return Error();
+    } else if (result < 0) {
+        return ErrnoError();
+    }
+    return std::string(buffer, result);
+}
+
+template <typename T>
+Result<void> SendMessage(int socket, const T& message) {
+    std::string message_string;
+    if (!message.SerializeToString(&message_string)) {
+        return Error() << "Unable to serialize message";
+    }
+
+    if (message_string.size() > kBufferSize) {
+        return Error() << "Serialized message too long to send";
+    }
+
+    if (auto result =
+                TEMP_FAILURE_RETRY(send(socket, message_string.c_str(), message_string.size(), 0));
+        result != static_cast<long>(message_string.size())) {
+        return ErrnoError() << "send() failed to send message contents";
+    }
+    return {};
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/reboot.cpp b/init/reboot.cpp
index 5b90969..a4fb08e 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -19,28 +19,32 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <linux/fs.h>
-#include <mntent.h>
 #include <linux/loop.h>
+#include <mntent.h>
+#include <semaphore.h>
+#include <stdlib.h>
 #include <sys/cdefs.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
-#include <sys/swap.h>
 #include <sys/stat.h>
+#include <sys/swap.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 
+#include <chrono>
 #include <memory>
 #include <set>
 #include <thread>
 #include <vector>
 
+#include <InitProperties.sysprop.h>
 #include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/macros.h>
 #include <android-base/properties.h>
-#include <android-base/stringprintf.h>
+#include <android-base/scopeguard.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 #include <bootloader_message/bootloader_message.h>
@@ -50,22 +54,62 @@
 #include <private/android_filesystem_config.h>
 #include <selinux/selinux.h>
 
+#include "action.h"
 #include "action_manager.h"
+#include "builtin_arguments.h"
 #include "init.h"
+#include "mount_namespace.h"
 #include "property_service.h"
 #include "reboot_utils.h"
 #include "service.h"
+#include "service_list.h"
 #include "sigchld_handler.h"
+#include "util.h"
 
+using namespace std::literals;
+
+using android::base::boot_clock;
 using android::base::GetBoolProperty;
+using android::base::GetUintProperty;
+using android::base::SetProperty;
 using android::base::Split;
-using android::base::StringPrintf;
 using android::base::Timer;
 using android::base::unique_fd;
+using android::base::WaitForProperty;
+using android::base::WriteStringToFile;
 
 namespace android {
 namespace init {
 
+static bool shutting_down = false;
+
+static const std::set<std::string> kDebuggingServices{"tombstoned", "logd", "adbd", "console"};
+
+static std::set<std::string> GetPostDataDebuggingServices() {
+    std::set<std::string> ret;
+    for (const auto& s : ServiceList::GetInstance()) {
+        if (kDebuggingServices.count(s->name()) && s->is_post_data()) {
+            ret.insert(s->name());
+        }
+    }
+    return ret;
+}
+
+static void PersistRebootReason(const char* reason, bool write_to_property) {
+    if (write_to_property) {
+        SetProperty(LAST_REBOOT_REASON_PROPERTY, reason);
+    }
+    auto fd = unique_fd(TEMP_FAILURE_RETRY(open(
+            LAST_REBOOT_REASON_FILE, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_BINARY, 0666)));
+    if (!fd.ok()) {
+        PLOG(ERROR) << "Could not open '" << LAST_REBOOT_REASON_FILE
+                    << "' to persist reboot reason";
+        return;
+    }
+    WriteStringToFd(reason, fd);
+    fsync(fd.get());
+}
+
 // represents umount status during reboot / shutdown.
 enum UmountStat {
     /* umount succeeded. */
@@ -111,16 +155,16 @@
                     "-a",
                     mnt_fsname_.c_str(),
             };
-            android_fork_execvp_ext(arraysize(f2fs_argv), (char**)f2fs_argv, &st, true, LOG_KLOG,
-                                    true, nullptr, nullptr, 0);
+            logwrap_fork_execvp(arraysize(f2fs_argv), f2fs_argv, &st, false, LOG_KLOG, true,
+                                nullptr);
         } else if (IsExt4()) {
             const char* ext4_argv[] = {
                     "/system/bin/e2fsck",
                     "-y",
                     mnt_fsname_.c_str(),
             };
-            android_fork_execvp_ext(arraysize(ext4_argv), (char**)ext4_argv, &st, true, LOG_KLOG,
-                                    true, nullptr, nullptr, 0);
+            logwrap_fork_execvp(arraysize(ext4_argv), ext4_argv, &st, false, LOG_KLOG, true,
+                                nullptr);
         }
     }
 
@@ -150,16 +194,23 @@
         LOG(WARNING) << "cannot find blank_screen in TurnOffBacklight";
         return;
     }
-    if (auto result = service->Start(); !result) {
+    if (auto result = service->Start(); !result.ok()) {
         LOG(WARNING) << "Could not start blank_screen service: " << result.error();
     }
 }
 
-static void ShutdownVold() {
-    const char* vdc_argv[] = {"/system/bin/vdc", "volume", "shutdown"};
+static Result<void> CallVdc(const std::string& system, const std::string& cmd) {
+    LOG(INFO) << "Calling /system/bin/vdc " << system << " " << cmd;
+    const char* vdc_argv[] = {"/system/bin/vdc", system.c_str(), cmd.c_str()};
     int status;
-    android_fork_execvp_ext(arraysize(vdc_argv), (char**)vdc_argv, &status, true, LOG_KLOG, true,
-                            nullptr, nullptr, 0);
+    if (logwrap_fork_execvp(arraysize(vdc_argv), vdc_argv, &status, false, LOG_KLOG, true,
+                            nullptr) != 0) {
+        return ErrnoError() << "Failed to call '/system/bin/vdc " << system << " " << cmd << "'";
+    }
+    if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+        return {};
+    }
+    return Error() << "'/system/bin/vdc " << system << " " << cmd << "' failed : " << status;
 }
 
 static void LogShutdownTime(UmountStat stat, Timer* t) {
@@ -167,11 +218,25 @@
                  << stat;
 }
 
-/* Find all read+write block devices and emulated devices in /proc/mounts
- * and add them to correpsponding list.
- */
-static bool FindPartitionsToUmount(std::vector<MountEntry>* blockDevPartitions,
-                                   std::vector<MountEntry>* emulatedPartitions, bool dump) {
+static bool IsDataMounted() {
+    std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "re"), endmntent);
+    if (fp == nullptr) {
+        PLOG(ERROR) << "Failed to open /proc/mounts";
+        return false;
+    }
+    mntent* mentry;
+    while ((mentry = getmntent(fp.get())) != nullptr) {
+        if (mentry->mnt_dir == "/data"s) {
+            return true;
+        }
+    }
+    return false;
+}
+
+// Find all read+write block devices and emulated devices in /proc/mounts and add them to
+// the correpsponding list.
+static bool FindPartitionsToUmount(std::vector<MountEntry>* block_dev_partitions,
+                                   std::vector<MountEntry>* emulated_partitions, bool dump) {
     std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "re"), endmntent);
     if (fp == nullptr) {
         PLOG(ERROR) << "Failed to open /proc/mounts";
@@ -188,10 +253,10 @@
             // Do not umount them as shutdown critical services may rely on them.
             if (mount_dir != "/" && mount_dir != "/system" && mount_dir != "/vendor" &&
                 mount_dir != "/oem") {
-                blockDevPartitions->emplace(blockDevPartitions->begin(), *mentry);
+                block_dev_partitions->emplace(block_dev_partitions->begin(), *mentry);
             }
         } else if (MountEntry::IsEmulatedDevice(*mentry)) {
-            emulatedPartitions->emplace(emulatedPartitions->begin(), *mentry);
+            emulated_partitions->emplace(emulated_partitions->begin(), *mentry);
         }
     }
     return true;
@@ -202,13 +267,13 @@
     if (!security_getenforce()) {
         LOG(INFO) << "Run lsof";
         const char* lsof_argv[] = {"/system/bin/lsof"};
-        android_fork_execvp_ext(arraysize(lsof_argv), (char**)lsof_argv, &status, true, LOG_KLOG,
-                                true, nullptr, nullptr, 0);
+        logwrap_fork_execvp(arraysize(lsof_argv), lsof_argv, &status, false, LOG_KLOG, true,
+                            nullptr);
     }
     FindPartitionsToUmount(nullptr, nullptr, true);
     // dump current CPU stack traces and uninterruptible tasks
-    android::base::WriteStringToFile("l", "/proc/sysrq-trigger");
-    android::base::WriteStringToFile("w", "/proc/sysrq-trigger");
+    WriteStringToFile("l", PROC_SYSRQ);
+    WriteStringToFile("w", PROC_SYSRQ);
 }
 
 static UmountStat UmountPartitions(std::chrono::milliseconds timeout) {
@@ -248,7 +313,95 @@
     }
 }
 
-static void KillAllProcesses() { android::base::WriteStringToFile("i", "/proc/sysrq-trigger"); }
+static void KillAllProcesses() {
+    WriteStringToFile("i", PROC_SYSRQ);
+}
+
+// Create reboot/shutdwon monitor thread
+void RebootMonitorThread(unsigned int cmd, const std::string& reboot_target,
+                         sem_t* reboot_semaphore, std::chrono::milliseconds shutdown_timeout,
+                         bool* reboot_monitor_run) {
+    unsigned int remaining_shutdown_time = 0;
+
+    // 300 seconds more than the timeout passed to the thread as there is a final Umount pass
+    // after the timeout is reached.
+    constexpr unsigned int shutdown_watchdog_timeout_default = 300;
+    auto shutdown_watchdog_timeout = android::base::GetUintProperty(
+            "ro.build.shutdown.watchdog.timeout", shutdown_watchdog_timeout_default);
+    remaining_shutdown_time = shutdown_watchdog_timeout + shutdown_timeout.count() / 1000;
+
+    while (*reboot_monitor_run == true) {
+        if (TEMP_FAILURE_RETRY(sem_wait(reboot_semaphore)) == -1) {
+            LOG(ERROR) << "sem_wait failed and exit RebootMonitorThread()";
+            return;
+        }
+
+        timespec shutdown_timeout_timespec;
+        if (clock_gettime(CLOCK_MONOTONIC, &shutdown_timeout_timespec) == -1) {
+            LOG(ERROR) << "clock_gettime() fail! exit RebootMonitorThread()";
+            return;
+        }
+
+        // If there are some remaining shutdown time left from previous round, we use
+        // remaining time here.
+        shutdown_timeout_timespec.tv_sec += remaining_shutdown_time;
+
+        LOG(INFO) << "shutdown_timeout_timespec.tv_sec: " << shutdown_timeout_timespec.tv_sec;
+
+        int sem_return = 0;
+        while ((sem_return = sem_timedwait_monotonic_np(reboot_semaphore,
+                                                        &shutdown_timeout_timespec)) == -1 &&
+               errno == EINTR) {
+        }
+
+        if (sem_return == -1) {
+            LOG(ERROR) << "Reboot thread timed out";
+
+            if (android::base::GetBoolProperty("ro.debuggable", false) == true) {
+                if (false) {
+                    // SEPolicy will block debuggerd from running and this is intentional.
+                    // But these lines are left to be enabled during debugging.
+                    LOG(INFO) << "Try to dump init process call trace:";
+                    const char* vdc_argv[] = {"/system/bin/debuggerd", "-b", "1"};
+                    int status;
+                    logwrap_fork_execvp(arraysize(vdc_argv), vdc_argv, &status, false, LOG_KLOG,
+                                        true, nullptr);
+                }
+                LOG(INFO) << "Show stack for all active CPU:";
+                WriteStringToFile("l", PROC_SYSRQ);
+
+                LOG(INFO) << "Show tasks that are in disk sleep(uninterruptable sleep), which are "
+                             "like "
+                             "blocked in mutex or hardware register access:";
+                WriteStringToFile("w", PROC_SYSRQ);
+            }
+
+            // In shutdown case,notify kernel to sync and umount fs to read-only before shutdown.
+            if (cmd == ANDROID_RB_POWEROFF || cmd == ANDROID_RB_THERMOFF) {
+                WriteStringToFile("s", PROC_SYSRQ);
+
+                WriteStringToFile("u", PROC_SYSRQ);
+
+                RebootSystem(cmd, reboot_target);
+            }
+
+            LOG(ERROR) << "Trigger crash at last!";
+            WriteStringToFile("c", PROC_SYSRQ);
+        } else {
+            timespec current_time_timespec;
+
+            if (clock_gettime(CLOCK_MONOTONIC, &current_time_timespec) == -1) {
+                LOG(ERROR) << "clock_gettime() fail! exit RebootMonitorThread()";
+                return;
+            }
+
+            remaining_shutdown_time =
+                    shutdown_timeout_timespec.tv_sec - current_time_timespec.tv_sec;
+
+            LOG(INFO) << "remaining_shutdown_time: " << remaining_shutdown_time;
+        }
+    }
+}
 
 /* Try umounting all emulated file systems R/W block device cfile systems.
  * This will just try umount and give it up if it fails.
@@ -259,12 +412,13 @@
  *
  * return true when umount was successful. false when timed out.
  */
-static UmountStat TryUmountAndFsck(bool runFsck, std::chrono::milliseconds timeout) {
+static UmountStat TryUmountAndFsck(unsigned int cmd, bool run_fsck,
+                                   std::chrono::milliseconds timeout, sem_t* reboot_semaphore) {
     Timer t;
     std::vector<MountEntry> block_devices;
     std::vector<MountEntry> emulated_devices;
 
-    if (runFsck && !FindPartitionsToUmount(&block_devices, &emulated_devices, false)) {
+    if (run_fsck && !FindPartitionsToUmount(&block_devices, &emulated_devices, false)) {
         return UMOUNT_STAT_ERROR;
     }
 
@@ -278,12 +432,18 @@
         if ((st != UMOUNT_STAT_SUCCESS) && DUMP_ON_UMOUNT_FAILURE) DumpUmountDebuggingInfo();
     }
 
-    if (stat == UMOUNT_STAT_SUCCESS && runFsck) {
+    if (stat == UMOUNT_STAT_SUCCESS && run_fsck) {
+        LOG(INFO) << "Pause reboot monitor thread before fsck";
+        sem_post(reboot_semaphore);
+
         // fsck part is excluded from timeout check. It only runs for user initiated shutdown
         // and should not affect reboot time.
         for (auto& entry : block_devices) {
             entry.DoFsck();
         }
+
+        LOG(INFO) << "Resume reboot monitor thread after fsck";
+        sem_post(reboot_semaphore);
     }
     return stat;
 }
@@ -293,11 +453,15 @@
 #define ZRAM_DEVICE   "/dev/block/zram0"
 #define ZRAM_RESET    "/sys/block/zram0/reset"
 #define ZRAM_BACK_DEV "/sys/block/zram0/backing_dev"
-static void KillZramBackingDevice() {
+static Result<void> KillZramBackingDevice() {
+    if (access(ZRAM_BACK_DEV, F_OK) != 0 && errno == ENOENT) {
+        LOG(INFO) << "No zram backing device configured";
+        return {};
+    }
     std::string backing_dev;
-    if (!android::base::ReadFileToString(ZRAM_BACK_DEV, &backing_dev)) return;
-
-    if (!android::base::StartsWith(backing_dev, "/dev/block/loop")) return;
+    if (!android::base::ReadFileToString(ZRAM_BACK_DEV, &backing_dev)) {
+        return ErrnoError() << "Failed to read " << ZRAM_BACK_DEV;
+    }
 
     // cut the last "\n"
     backing_dev.erase(backing_dev.length() - 1);
@@ -306,53 +470,94 @@
     Timer swap_timer;
     LOG(INFO) << "swapoff() start...";
     if (swapoff(ZRAM_DEVICE) == -1) {
-        LOG(ERROR) << "zram_backing_dev: swapoff (" << backing_dev << ")" << " failed";
-        return;
+        return ErrnoError() << "zram_backing_dev: swapoff (" << backing_dev << ")"
+                            << " failed";
     }
     LOG(INFO) << "swapoff() took " << swap_timer;;
 
-    if (!android::base::WriteStringToFile("1", ZRAM_RESET)) {
-        LOG(ERROR) << "zram_backing_dev: reset (" << backing_dev << ")" << " failed";
-        return;
+    if (!WriteStringToFile("1", ZRAM_RESET)) {
+        return Error() << "zram_backing_dev: reset (" << backing_dev << ")"
+                       << " failed";
+    }
+
+    if (!android::base::StartsWith(backing_dev, "/dev/block/loop")) {
+        LOG(INFO) << backing_dev << " is not a loop device. Exiting early";
+        return {};
     }
 
     // clear loopback device
     unique_fd loop(TEMP_FAILURE_RETRY(open(backing_dev.c_str(), O_RDWR | O_CLOEXEC)));
     if (loop.get() < 0) {
-        LOG(ERROR) << "zram_backing_dev: open(" << backing_dev << ")" << " failed";
-        return;
+        return ErrnoError() << "zram_backing_dev: open(" << backing_dev << ")"
+                            << " failed";
     }
 
     if (ioctl(loop.get(), LOOP_CLR_FD, 0) < 0) {
-        LOG(ERROR) << "zram_backing_dev: loop_clear (" << backing_dev << ")" << " failed";
-        return;
+        return ErrnoError() << "zram_backing_dev: loop_clear (" << backing_dev << ")"
+                            << " failed";
     }
     LOG(INFO) << "zram_backing_dev: `" << backing_dev << "` is cleared successfully.";
+    return {};
+}
+
+// Stops given services, waits for them to be stopped for |timeout| ms.
+// If terminate is true, then SIGTERM is sent to services, otherwise SIGKILL is sent.
+// Note that services are stopped in order given by |ServiceList::services_in_shutdown_order|
+// function.
+static void StopServices(const std::set<std::string>& services, std::chrono::milliseconds timeout,
+                         bool terminate) {
+    LOG(INFO) << "Stopping " << services.size() << " services by sending "
+              << (terminate ? "SIGTERM" : "SIGKILL");
+    std::vector<pid_t> pids;
+    pids.reserve(services.size());
+    for (const auto& s : ServiceList::GetInstance().services_in_shutdown_order()) {
+        if (services.count(s->name()) == 0) {
+            continue;
+        }
+        if (s->pid() > 0) {
+            pids.push_back(s->pid());
+        }
+        if (terminate) {
+            s->Terminate();
+        } else {
+            s->Stop();
+        }
+    }
+    if (timeout > 0ms) {
+        WaitToBeReaped(pids, timeout);
+    } else {
+        // Even if we don't to wait for services to stop, we still optimistically reap zombies.
+        ReapAnyOutstandingChildren();
+    }
+}
+
+// Like StopServices, but also logs all the services that failed to stop after the provided timeout.
+// Returns number of violators.
+static int StopServicesAndLogViolations(const std::set<std::string>& services,
+                                        std::chrono::milliseconds timeout, bool terminate) {
+    StopServices(services, timeout, terminate);
+    int still_running = 0;
+    for (const auto& s : ServiceList::GetInstance()) {
+        if (s->IsRunning() && services.count(s->name())) {
+            LOG(ERROR) << "[service-misbehaving] : service '" << s->name() << "' is still running "
+                       << timeout.count() << "ms after receiving "
+                       << (terminate ? "SIGTERM" : "SIGKILL");
+            still_running++;
+        }
+    }
+    return still_running;
 }
 
 //* Reboot / shutdown the system.
 // cmd ANDROID_RB_* as defined in android_reboot.h
 // reason Reason string like "reboot", "shutdown,userrequested"
-// rebootTarget Reboot target string like "bootloader". Otherwise, it should be an
-//              empty string.
-// runFsck Whether to run fsck after umount is done.
+// reboot_target Reboot target string like "bootloader". Otherwise, it should be an empty string.
+// run_fsck Whether to run fsck after umount is done.
 //
-static void DoReboot(unsigned int cmd, const std::string& reason, const std::string& rebootTarget,
-                     bool runFsck) {
+static void DoReboot(unsigned int cmd, const std::string& reason, const std::string& reboot_target,
+                     bool run_fsck) {
     Timer t;
-    LOG(INFO) << "Reboot start, reason: " << reason << ", rebootTarget: " << rebootTarget;
-
-    // Ensure last reboot reason is reduced to canonical
-    // alias reported in bootloader or system boot reason.
-    size_t skip = 0;
-    std::vector<std::string> reasons = Split(reason, ",");
-    if (reasons.size() >= 2 && reasons[0] == "reboot" &&
-        (reasons[1] == "recovery" || reasons[1] == "bootloader" || reasons[1] == "cold" ||
-         reasons[1] == "hard" || reasons[1] == "warm")) {
-        skip = strlen("reboot,");
-    }
-    property_set(LAST_REBOOT_REASON_PROPERTY, reason.c_str() + skip);
-    sync();
+    LOG(INFO) << "Reboot start, reason: " << reason << ", reboot_target: " << reboot_target;
 
     bool is_thermal_shutdown = cmd == ANDROID_RB_THERMOFF;
 
@@ -369,25 +574,63 @@
     }
     LOG(INFO) << "Shutdown timeout: " << shutdown_timeout.count() << " ms";
 
-    // keep debugging tools until non critical ones are all gone.
-    const std::set<std::string> kill_after_apps{"tombstoned", "logd", "adbd"};
+    sem_t reboot_semaphore;
+    if (sem_init(&reboot_semaphore, false, 0) == -1) {
+        // These should never fail, but if they do, skip the graceful reboot and reboot immediately.
+        LOG(ERROR) << "sem_init() fail and RebootSystem() return!";
+        RebootSystem(cmd, reboot_target);
+    }
+
+    // Start a thread to monitor init shutdown process
+    LOG(INFO) << "Create reboot monitor thread.";
+    bool reboot_monitor_run = true;
+    std::thread reboot_monitor_thread(&RebootMonitorThread, cmd, reboot_target, &reboot_semaphore,
+                                      shutdown_timeout, &reboot_monitor_run);
+    reboot_monitor_thread.detach();
+
+    // Start reboot monitor thread
+    sem_post(&reboot_semaphore);
+
+    // Ensure last reboot reason is reduced to canonical
+    // alias reported in bootloader or system boot reason.
+    size_t skip = 0;
+    std::vector<std::string> reasons = Split(reason, ",");
+    if (reasons.size() >= 2 && reasons[0] == "reboot" &&
+        (reasons[1] == "recovery" || reasons[1] == "bootloader" || reasons[1] == "cold" ||
+         reasons[1] == "hard" || reasons[1] == "warm")) {
+        skip = strlen("reboot,");
+    }
+    PersistRebootReason(reason.c_str() + skip, true);
+
+    // If /data isn't mounted then we can skip the extra reboot steps below, since we don't need to
+    // worry about unmounting it.
+    if (!IsDataMounted()) {
+        sync();
+        RebootSystem(cmd, reboot_target);
+        abort();
+    }
+
     // watchdogd is a vendor specific component but should be alive to complete shutdown safely.
     const std::set<std::string> to_starts{"watchdogd"};
+    std::set<std::string> stop_first;
     for (const auto& s : ServiceList::GetInstance()) {
-        if (kill_after_apps.count(s->name())) {
+        if (kDebuggingServices.count(s->name())) {
+            // keep debugging tools until non critical ones are all gone.
             s->SetShutdownCritical();
         } else if (to_starts.count(s->name())) {
-            if (auto result = s->Start(); !result) {
+            if (auto result = s->Start(); !result.ok()) {
                 LOG(ERROR) << "Could not start shutdown 'to_start' service '" << s->name()
                            << "': " << result.error();
             }
             s->SetShutdownCritical();
         } else if (s->IsShutdownCritical()) {
             // Start shutdown critical service if not started.
-            if (auto result = s->Start(); !result) {
+            if (auto result = s->Start(); !result.ok()) {
                 LOG(ERROR) << "Could not start shutdown critical service '" << s->name()
                            << "': " << result.error();
             }
+        } else {
+            stop_first.insert(s->name());
         }
     }
 
@@ -396,16 +639,16 @@
         TurnOffBacklight();
     }
 
-    Service* bootAnim = ServiceList::GetInstance().FindService("bootanim");
-    Service* surfaceFlinger = ServiceList::GetInstance().FindService("surfaceflinger");
-    if (bootAnim != nullptr && surfaceFlinger != nullptr && surfaceFlinger->IsRunning()) {
+    Service* boot_anim = ServiceList::GetInstance().FindService("bootanim");
+    Service* surface_flinger = ServiceList::GetInstance().FindService("surfaceflinger");
+    if (boot_anim != nullptr && surface_flinger != nullptr && surface_flinger->IsRunning()) {
         bool do_shutdown_animation = GetBoolProperty("ro.init.shutdown_animation", false);
 
         if (do_shutdown_animation) {
-            property_set("service.bootanim.exit", "0");
+            SetProperty("service.bootanim.exit", "0");
             // Could be in the middle of animation. Stop and start so that it can pick
             // up the right mode.
-            bootAnim->Stop();
+            boot_anim->Stop();
         }
 
         for (const auto& service : ServiceList::GetInstance()) {
@@ -415,78 +658,42 @@
 
             // start all animation classes if stopped.
             if (do_shutdown_animation) {
-                service->Start().IgnoreError();
+                service->Start();
             }
             service->SetShutdownCritical();  // will not check animation class separately
         }
 
         if (do_shutdown_animation) {
-            bootAnim->Start().IgnoreError();
-            surfaceFlinger->SetShutdownCritical();
-            bootAnim->SetShutdownCritical();
+            boot_anim->Start();
+            surface_flinger->SetShutdownCritical();
+            boot_anim->SetShutdownCritical();
         }
     }
 
     // optional shutdown step
     // 1. terminate all services except shutdown critical ones. wait for delay to finish
     if (shutdown_timeout > 0ms) {
-        LOG(INFO) << "terminating init services";
-
-        // Ask all services to terminate except shutdown critical ones.
-        for (const auto& s : ServiceList::GetInstance().services_in_shutdown_order()) {
-            if (!s->IsShutdownCritical()) s->Terminate();
-        }
-
-        int service_count = 0;
-        // Only wait up to half of timeout here
-        auto termination_wait_timeout = shutdown_timeout / 2;
-        while (t.duration() < termination_wait_timeout) {
-            ReapAnyOutstandingChildren();
-
-            service_count = 0;
-            for (const auto& s : ServiceList::GetInstance()) {
-                // Count the number of services running except shutdown critical.
-                // Exclude the console as it will ignore the SIGTERM signal
-                // and not exit.
-                // Note: SVC_CONSOLE actually means "requires console" but
-                // it is only used by the shell.
-                if (!s->IsShutdownCritical() && s->pid() != 0 && (s->flags() & SVC_CONSOLE) == 0) {
-                    service_count++;
-                }
-            }
-
-            if (service_count == 0) {
-                // All terminable services terminated. We can exit early.
-                break;
-            }
-
-            // Wait a bit before recounting the number or running services.
-            std::this_thread::sleep_for(50ms);
-        }
-        LOG(INFO) << "Terminating running services took " << t
-                  << " with remaining services:" << service_count;
+        StopServicesAndLogViolations(stop_first, shutdown_timeout / 2, true /* SIGTERM */);
     }
-
-    // minimum safety steps before restarting
-    // 2. kill all services except ones that are necessary for the shutdown sequence.
-    for (const auto& s : ServiceList::GetInstance().services_in_shutdown_order()) {
-        if (!s->IsShutdownCritical()) s->Stop();
-    }
+    // Send SIGKILL to ones that didn't terminate cleanly.
+    StopServicesAndLogViolations(stop_first, 0ms, false /* SIGKILL */);
     SubcontextTerminate();
+    // Reap subcontext pids.
     ReapAnyOutstandingChildren();
 
-    // 3. send volume shutdown to vold
-    Service* voldService = ServiceList::GetInstance().FindService("vold");
-    if (voldService != nullptr && voldService->IsRunning()) {
-        ShutdownVold();
-        voldService->Stop();
+    // 3. send volume abort_fuse and volume shutdown to vold
+    Service* vold_service = ServiceList::GetInstance().FindService("vold");
+    if (vold_service != nullptr && vold_service->IsRunning()) {
+        // Manually abort FUSE connections, since the FUSE daemon is already dead
+        // at this point, and unmounting it might hang.
+        CallVdc("volume", "abort_fuse");
+        CallVdc("volume", "shutdown");
+        vold_service->Stop();
     } else {
         LOG(INFO) << "vold not running, skipping vold shutdown";
     }
     // logcat stopped here
-    for (const auto& s : ServiceList::GetInstance().services_in_shutdown_order()) {
-        if (kill_after_apps.count(s->name())) s->Stop();
-    }
+    StopServices(kDebuggingServices, 0ms, false /* SIGKILL */);
     // 4. sync, try umount, and optionally run fsck for user shutdown
     {
         Timer sync_timer;
@@ -497,7 +704,8 @@
     // 5. drop caches and disable zram backing device, if exist
     KillZramBackingDevice();
 
-    UmountStat stat = TryUmountAndFsck(runFsck, shutdown_timeout - t.duration());
+    UmountStat stat =
+            TryUmountAndFsck(cmd, run_fsck, shutdown_timeout - t.duration(), &reboot_semaphore);
     // Follow what linux shutdown is doing: one more sync with little bit delay
     {
         Timer sync_timer;
@@ -507,23 +715,241 @@
     }
     if (!is_thermal_shutdown) std::this_thread::sleep_for(100ms);
     LogShutdownTime(stat, &t);
+
+    // Send signal to terminate reboot monitor thread.
+    reboot_monitor_run = false;
+    sem_post(&reboot_semaphore);
+
     // Reboot regardless of umount status. If umount fails, fsck after reboot will fix it.
-    RebootSystem(cmd, rebootTarget);
+    RebootSystem(cmd, reboot_target);
     abort();
 }
 
-bool HandlePowerctlMessage(const std::string& command) {
+static void EnterShutdown() {
+    LOG(INFO) << "Entering shutdown mode";
+    shutting_down = true;
+    // Skip wait for prop if it is in progress
+    ResetWaitForProp();
+    // Clear EXEC flag if there is one pending
+    for (const auto& s : ServiceList::GetInstance()) {
+        s->UnSetExec();
+    }
+}
+
+static void LeaveShutdown() {
+    LOG(INFO) << "Leaving shutdown mode";
+    shutting_down = false;
+    StartSendingMessages();
+}
+
+static Result<void> UnmountAllApexes() {
+    const char* args[] = {"/system/bin/apexd", "--unmount-all"};
+    int status;
+    if (logwrap_fork_execvp(arraysize(args), args, &status, false, LOG_KLOG, true, nullptr) != 0) {
+        return ErrnoError() << "Failed to call '/system/bin/apexd --unmount-all'";
+    }
+    if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+        return {};
+    }
+    return Error() << "'/system/bin/apexd --unmount-all' failed : " << status;
+}
+
+static std::chrono::milliseconds GetMillisProperty(const std::string& name,
+                                                   std::chrono::milliseconds default_value) {
+    auto value = GetUintProperty(name, static_cast<uint64_t>(default_value.count()));
+    return std::chrono::milliseconds(std::move(value));
+}
+
+static Result<void> DoUserspaceReboot() {
+    LOG(INFO) << "Userspace reboot initiated";
+    // An ugly way to pass a more precise reason on why fallback to hard reboot was triggered.
+    std::string sub_reason = "";
+    auto guard = android::base::make_scope_guard([&sub_reason] {
+        // Leave shutdown so that we can handle a full reboot.
+        LeaveShutdown();
+        trigger_shutdown("reboot,userspace_failed,shutdown_aborted," + sub_reason);
+    });
+    // Triggering userspace-reboot-requested will result in a bunch of setprop
+    // actions. We should make sure, that all of them are propagated before
+    // proceeding with userspace reboot. Synchronously setting sys.init.userspace_reboot.in_progress
+    // property is not perfect, but it should do the trick.
+    if (!android::sysprop::InitProperties::userspace_reboot_in_progress(true)) {
+        sub_reason = "setprop";
+        return Error() << "Failed to set sys.init.userspace_reboot.in_progress property";
+    }
+    EnterShutdown();
+    if (!SetProperty("sys.powerctl", "")) {
+        sub_reason = "resetprop";
+        return Error() << "Failed to reset sys.powerctl property";
+    }
+    std::set<std::string> stop_first;
+    // Remember the services that were enabled. We will need to manually enable them again otherwise
+    // triggers like class_start won't restart them.
+    std::set<std::string> were_enabled;
+    for (const auto& s : ServiceList::GetInstance().services_in_shutdown_order()) {
+        if (s->is_post_data() && !kDebuggingServices.count(s->name())) {
+            stop_first.insert(s->name());
+        }
+        // TODO(ioffe): we should also filter out temporary services here.
+        if (s->is_post_data() && s->IsEnabled()) {
+            were_enabled.insert(s->name());
+        }
+    }
+    {
+        Timer sync_timer;
+        LOG(INFO) << "sync() before terminating services...";
+        sync();
+        LOG(INFO) << "sync() took " << sync_timer;
+    }
+    auto sigterm_timeout = GetMillisProperty("init.userspace_reboot.sigterm.timeoutmillis", 5s);
+    auto sigkill_timeout = GetMillisProperty("init.userspace_reboot.sigkill.timeoutmillis", 10s);
+    LOG(INFO) << "Timeout to terminate services: " << sigterm_timeout.count() << "ms "
+              << "Timeout to kill services: " << sigkill_timeout.count() << "ms";
+    StopServicesAndLogViolations(stop_first, sigterm_timeout, true /* SIGTERM */);
+    if (int r = StopServicesAndLogViolations(stop_first, sigkill_timeout, false /* SIGKILL */);
+        r > 0) {
+        sub_reason = "sigkill";
+        // TODO(b/135984674): store information about offending services for debugging.
+        return Error() << r << " post-data services are still running";
+    }
+    if (auto result = KillZramBackingDevice(); !result.ok()) {
+        sub_reason = "zram";
+        return result;
+    }
+    if (auto result = CallVdc("volume", "reset"); !result.ok()) {
+        sub_reason = "vold_reset";
+        return result;
+    }
+    const auto& debugging_services = GetPostDataDebuggingServices();
+    if (int r = StopServicesAndLogViolations(debugging_services, sigkill_timeout,
+                                             false /* SIGKILL */);
+        r > 0) {
+        sub_reason = "sigkill_debug";
+        // TODO(b/135984674): store information about offending services for debugging.
+        return Error() << r << " debugging services are still running";
+    }
+    {
+        Timer sync_timer;
+        LOG(INFO) << "sync() after stopping services...";
+        sync();
+        LOG(INFO) << "sync() took " << sync_timer;
+    }
+    if (auto result = UnmountAllApexes(); !result.ok()) {
+        sub_reason = "apex";
+        return result;
+    }
+    if (!SwitchToBootstrapMountNamespaceIfNeeded()) {
+        sub_reason = "ns_switch";
+        return Error() << "Failed to switch to bootstrap namespace";
+    }
+    // Remove services that were defined in an APEX.
+    ServiceList::GetInstance().RemoveServiceIf([](const std::unique_ptr<Service>& s) -> bool {
+        if (s->is_from_apex()) {
+            LOG(INFO) << "Removing service '" << s->name() << "' because it's defined in an APEX";
+            return true;
+        }
+        return false;
+    });
+    // Re-enable services
+    for (const auto& s : ServiceList::GetInstance()) {
+        if (were_enabled.count(s->name())) {
+            LOG(INFO) << "Re-enabling service '" << s->name() << "'";
+            s->Enable();
+        }
+    }
+    ServiceList::GetInstance().ResetState();
+    LeaveShutdown();
+    ActionManager::GetInstance().QueueEventTrigger("userspace-reboot-resume");
+    guard.Disable();  // Go on with userspace reboot.
+    return {};
+}
+
+static void UserspaceRebootWatchdogThread() {
+    auto started_timeout = GetMillisProperty("init.userspace_reboot.started.timeoutmillis", 10s);
+    if (!WaitForProperty("sys.init.userspace_reboot.in_progress", "1", started_timeout)) {
+        LOG(ERROR) << "Userspace reboot didn't start in " << started_timeout.count()
+                   << "ms. Switching to full reboot";
+        // Init might be wedged, don't try to write reboot reason into a persistent property and do
+        // a dirty reboot.
+        PersistRebootReason("userspace_failed,watchdog_triggered,failed_to_start", false);
+        RebootSystem(ANDROID_RB_RESTART2, "userspace_failed,watchdog_triggered,failed_to_start");
+    }
+    LOG(INFO) << "Starting userspace reboot watchdog";
+    auto watchdog_timeout = GetMillisProperty("init.userspace_reboot.watchdog.timeoutmillis", 5min);
+    LOG(INFO) << "UserspaceRebootWatchdog timeout: " << watchdog_timeout.count() << "ms";
+    if (!WaitForProperty("sys.boot_completed", "1", watchdog_timeout)) {
+        LOG(ERROR) << "Failed to boot in " << watchdog_timeout.count()
+                   << "ms. Switching to full reboot";
+        // In this case device is in a boot loop. Only way to recover is to do dirty reboot.
+        // Since init might be wedged, don't try to write reboot reason into a persistent property.
+        PersistRebootReason("userspace_failed,watchdog_triggered,failed_to_boot", false);
+        RebootSystem(ANDROID_RB_RESTART2, "userspace_failed,watchdog_triggered,failed_to_boot");
+    }
+    LOG(INFO) << "Device booted, stopping userspace reboot watchdog";
+}
+
+static void HandleUserspaceReboot() {
+    if (!android::sysprop::InitProperties::is_userspace_reboot_supported().value_or(false)) {
+        LOG(ERROR) << "Attempted a userspace reboot on a device that doesn't support it";
+        return;
+    }
+    // Spinnig up a separate thread will fail the setns call later in the boot sequence.
+    // Fork a new process to monitor userspace reboot while we are investigating a better solution.
+    pid_t pid = fork();
+    if (pid < 0) {
+        PLOG(ERROR) << "Failed to fork process for userspace reboot watchdog. Switching to full "
+                    << "reboot";
+        trigger_shutdown("reboot,userspace_failed,watchdog_fork");
+        return;
+    }
+    if (pid == 0) {
+        // Child
+        UserspaceRebootWatchdogThread();
+        _exit(EXIT_SUCCESS);
+    }
+    LOG(INFO) << "Clearing queue and starting userspace-reboot-requested trigger";
+    auto& am = ActionManager::GetInstance();
+    am.ClearQueue();
+    am.QueueEventTrigger("userspace-reboot-requested");
+    auto handler = [](const BuiltinArguments&) { return DoUserspaceReboot(); };
+    am.QueueBuiltinAction(handler, "userspace-reboot");
+}
+
+/**
+ * Check if "command" field is set in bootloader message.
+ *
+ * If "command" field is broken (contains non-printable characters prior to
+ * terminating zero), it will be zeroed.
+ *
+ * @param[in,out] boot Bootloader message (BCB) structure
+ * @return true if "command" field is already set, and false if it's empty
+ */
+static bool CommandIsPresent(bootloader_message* boot) {
+    if (boot->command[0] == '\0')
+        return false;
+
+    for (size_t i = 0; i < arraysize(boot->command); ++i) {
+        if (boot->command[i] == '\0')
+            return true;
+        if (!isprint(boot->command[i]))
+            break;
+    }
+
+    memset(boot->command, 0, sizeof(boot->command));
+    return false;
+}
+
+void HandlePowerctlMessage(const std::string& command) {
     unsigned int cmd = 0;
     std::vector<std::string> cmd_params = Split(command, ",");
     std::string reboot_target = "";
     bool run_fsck = false;
     bool command_invalid = false;
+    bool userspace_reboot = false;
 
-    if (cmd_params.size() > 3) {
-        command_invalid = true;
-    } else if (cmd_params[0] == "shutdown") {
+    if (cmd_params[0] == "shutdown") {
         cmd = ANDROID_RB_POWEROFF;
-        if (cmd_params.size() == 2) {
+        if (cmd_params.size() >= 2) {
             if (cmd_params[1] == "userrequested") {
                 // The shutdown reason is PowerManager.SHUTDOWN_USER_REQUESTED.
                 // Run fsck once the file system is remounted in read-only mode.
@@ -539,6 +965,10 @@
         cmd = ANDROID_RB_RESTART2;
         if (cmd_params.size() >= 2) {
             reboot_target = cmd_params[1];
+            if (reboot_target == "userspace") {
+                LOG(INFO) << "Userspace reboot requested";
+                userspace_reboot = true;
+            }
             // adb reboot fastboot should boot into bootloader for devices not
             // supporting logical partitions.
             if (reboot_target == "fastboot" &&
@@ -554,6 +984,20 @@
                                   "bootloader_message: "
                                << err;
                 }
+            } else if (reboot_target == "recovery") {
+                bootloader_message boot = {};
+                if (std::string err; !read_bootloader_message(&boot, &err)) {
+                    LOG(ERROR) << "Failed to read bootloader message: " << err;
+                }
+                // Update the boot command field if it's empty, and preserve
+                // the other arguments in the bootloader message.
+                if (!CommandIsPresent(&boot)) {
+                    strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
+                    if (std::string err; !write_bootloader_message(boot, &err)) {
+                        LOG(ERROR) << "Failed to set bootloader message: " << err;
+                        return;
+                    }
+                }
             } else if (reboot_target == "sideload" || reboot_target == "sideload-auto-reboot" ||
                        reboot_target == "fastboot") {
                 std::string arg = reboot_target == "sideload-auto-reboot" ? "sideload_auto_reboot"
@@ -564,14 +1008,14 @@
                 std::string err;
                 if (!write_bootloader_message(options, &err)) {
                     LOG(ERROR) << "Failed to set bootloader message: " << err;
-                    return false;
+                    return;
                 }
                 reboot_target = "recovery";
             }
 
-            // If there is an additional parameter, pass it along
-            if ((cmd_params.size() == 3) && cmd_params[2].size()) {
-                reboot_target += "," + cmd_params[2];
+            // If there are additional parameter, pass them along
+            for (size_t i = 2; (cmd_params.size() > i) && cmd_params[i].size(); ++i) {
+                reboot_target += "," + cmd_params[i];
             }
         }
     } else {
@@ -579,7 +1023,16 @@
     }
     if (command_invalid) {
         LOG(ERROR) << "powerctl: unrecognized command '" << command << "'";
-        return false;
+        return;
+    }
+
+    // We do not want to process any messages (queue'ing triggers, shutdown messages, control
+    // messages, etc) from properties during reboot.
+    StopSendingMessages();
+
+    if (userspace_reboot) {
+        HandleUserspaceReboot();
+        return;
     }
 
     LOG(INFO) << "Clear action queue and start shutdown trigger";
@@ -589,19 +1042,15 @@
     // Queue built-in shutdown_done
     auto shutdown_handler = [cmd, command, reboot_target, run_fsck](const BuiltinArguments&) {
         DoReboot(cmd, command, reboot_target, run_fsck);
-        return Success();
+        return Result<void>{};
     };
     ActionManager::GetInstance().QueueBuiltinAction(shutdown_handler, "shutdown_done");
 
-    // Skip wait for prop if it is in progress
-    ResetWaitForProp();
+    EnterShutdown();
+}
 
-    // Clear EXEC flag if there is one pending
-    for (const auto& s : ServiceList::GetInstance()) {
-        s->UnSetExec();
-    }
-
-    return true;
+bool IsShuttingDown() {
+    return shutting_down;
 }
 
 }  // namespace init
diff --git a/init/reboot.h b/init/reboot.h
index 07dcb6e..81c3edc 100644
--- a/init/reboot.h
+++ b/init/reboot.h
@@ -23,8 +23,9 @@
 namespace init {
 
 // Parses and handles a setprop sys.powerctl message.
-bool HandlePowerctlMessage(const std::string& command);
+void HandlePowerctlMessage(const std::string& command);
 
+bool IsShuttingDown();
 }  // namespace init
 }  // namespace android
 
diff --git a/init/reboot_utils.cpp b/init/reboot_utils.cpp
index de085cc..76460a5 100644
--- a/init/reboot_utils.cpp
+++ b/init/reboot_utils.cpp
@@ -29,17 +29,22 @@
 #include <cutils/android_reboot.h>
 
 #include "capabilities.h"
+#include "reboot_utils.h"
 
 namespace android {
 namespace init {
 
 static std::string init_fatal_reboot_target = "bootloader";
+static bool init_fatal_panic = false;
 
 void SetFatalRebootTarget() {
     std::string cmdline;
     android::base::ReadFileToString("/proc/cmdline", &cmdline);
     cmdline = android::base::Trim(cmdline);
 
+    const char kInitFatalPanicString[] = "androidboot.init_fatal_panic=true";
+    init_fatal_panic = cmdline.find(kInitFatalPanicString) != std::string::npos;
+
     const char kRebootTargetString[] = "androidboot.init_fatal_reboot_target=";
     auto start_pos = cmdline.find(kRebootTargetString);
     if (start_pos == std::string::npos) {
@@ -109,7 +114,7 @@
     abort();
 }
 
-void __attribute__((noreturn)) InitFatalReboot() {
+void __attribute__((noreturn)) InitFatalReboot(int signal_number) {
     auto pid = fork();
 
     if (pid == -1) {
@@ -124,6 +129,7 @@
     }
 
     // In the parent, let's try to get a backtrace then shutdown.
+    LOG(ERROR) << __FUNCTION__ << ": signal " << signal_number;
     std::unique_ptr<Backtrace> backtrace(
             Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
     if (!backtrace->Unwind(0)) {
@@ -132,6 +138,12 @@
     for (size_t i = 0; i < backtrace->NumFrames(); i++) {
         LOG(ERROR) << backtrace->FormatFrameData(i);
     }
+    if (init_fatal_panic) {
+        LOG(ERROR) << __FUNCTION__ << ": Trigger crash";
+        android::base::WriteStringToFile("c", PROC_SYSRQ);
+        LOG(ERROR) << __FUNCTION__ << ": Sys-Rq failed to crash the system; fallback to exit().";
+        _exit(signal_number);
+    }
     RebootSystem(ANDROID_RB_RESTART2, init_fatal_reboot_target);
 }
 
@@ -154,7 +166,7 @@
         // RebootSystem uses syscall() which isn't actually async-signal-safe, but our only option
         // and probably good enough given this is already an error case and only enabled for
         // development builds.
-        InitFatalReboot();
+        InitFatalReboot(signal);
     };
     action.sa_flags = SA_RESTART;
     sigaction(SIGABRT, &action, nullptr);
diff --git a/init/reboot_utils.h b/init/reboot_utils.h
index 3fd969e..05bb9ae 100644
--- a/init/reboot_utils.h
+++ b/init/reboot_utils.h
@@ -18,6 +18,8 @@
 
 #include <string>
 
+#define PROC_SYSRQ "/proc/sysrq-trigger"
+
 namespace android {
 namespace init {
 
@@ -27,7 +29,7 @@
 bool IsRebootCapable();
 // This is a wrapper around the actual reboot calls.
 void __attribute__((noreturn)) RebootSystem(unsigned int cmd, const std::string& reboot_target);
-void __attribute__((noreturn)) InitFatalReboot();
+void __attribute__((noreturn)) InitFatalReboot(int signal_number);
 void InstallRebootSignalHandlers();
 
 }  // namespace init
diff --git a/init/result.h b/init/result.h
index 0e3fd3d..8c1f91e 100644
--- a/init/result.h
+++ b/init/result.h
@@ -14,200 +14,14 @@
  * limitations under the License.
  */
 
-// This file contains classes for returning a successful result along with an optional
-// arbitrarily typed return value or for returning a failure result along with an optional string
-// indicating why the function failed.
+#pragma once
 
-// There are 3 classes that implement this functionality and one additional helper type.
-//
-// Result<T> either contains a member of type T that can be accessed using similar semantics as
-// std::optional<T> or it contains a ResultError describing an error, which can be accessed via
-// Result<T>::error().
-//
-// ResultError is a type that contains both a std::string describing the error and a copy of errno
-// from when the error occurred.  ResultError can be used in an ostream directly to print its
-// string value.
-//
-// Success is a typedef that aids in creating Result<T> that do not contain a return value.
-// Result<Success> is the correct return type for a function that either returns successfully or
-// returns an error value.  Returning Success() from a function that returns Result<Success> is the
-// correct way to indicate that a function without a return type has completed successfully.
-//
-// A successful Result<T> is constructed implicitly from any type that can be implicitly converted
-// to T or from the constructor arguments for T.  This allows you to return a type T directly from
-// a function that returns Result<T>.
-//
-// Error and ErrnoError are used to construct a Result<T> that has failed.  The Error class takes
-// an ostream as an input and are implicitly cast to a Result<T> containing that failure.
-// ErrnoError() is a helper function to create an Error class that appends ": " + strerror(errno)
-// to the end of the failure string to aid in interacting with C APIs.  Alternatively, an errno
-// value can be directly specified via the Error() constructor.
-//
-// ResultError can be used in the ostream when using Error to construct a Result<T>.  In this case,
-// the string that the ResultError takes is passed through the stream normally, but the errno is
-// passed to the Result<T>.  This can be used to pass errno from a failing C function up multiple
-// callers.
-//
-// ResultError can also directly construct a Result<T>.  This is particularly useful if you have a
-// function that return Result<T> but you have a Result<U> and want to return its error.  In this
-// case, you can return the .error() from the Result<U> to construct the Result<T>.
+// The implementation of this file has moved to android-base.  This file remains since historically,
+// these classes were a part of init.
 
-// An example of how to use these is below:
-// Result<U> CalculateResult(const T& input) {
-//   U output;
-//   if (!SomeOtherCppFunction(input, &output)) {
-//     return Error() << "SomeOtherCppFunction(" << input << ") failed";
-//   }
-//   if (!c_api_function(output)) {
-//     return ErrnoError() << "c_api_function(" << output << ") failed";
-//   }
-//   return output;
-// }
-//
-// auto output = CalculateResult(input);
-// if (!output) return Error() << "CalculateResult failed: " << output.error();
-// UseOutput(*output);
+#include <android-base/result.h>
 
-#ifndef _INIT_RESULT_H
-#define _INIT_RESULT_H
-
-#include <errno.h>
-
-#include <sstream>
-#include <string>
-#include <variant>
-
-namespace android {
-namespace init {
-
-struct ResultError {
-    template <typename T>
-    ResultError(T&& error_string, int error_errno)
-        : error_string(std::forward<T>(error_string)), error_errno(error_errno) {}
-
-    std::string error_string;
-    int error_errno;
-};
-
-inline std::ostream& operator<<(std::ostream& os, const ResultError& t) {
-    os << t.error_string;
-    return os;
-}
-
-inline std::ostream& operator<<(std::ostream& os, ResultError&& t) {
-    os << std::move(t.error_string);
-    return os;
-}
-
-class Error {
-  public:
-    Error() : errno_(0), append_errno_(false) {}
-    Error(int errno_to_append) : errno_(errno_to_append), append_errno_(true) {}
-
-    template <typename T>
-    Error&& operator<<(T&& t) {
-        ss_ << std::forward<T>(t);
-        return std::move(*this);
-    }
-
-    Error&& operator<<(const ResultError& result_error) {
-        ss_ << result_error.error_string;
-        errno_ = result_error.error_errno;
-        return std::move(*this);
-    }
-
-    Error&& operator<<(ResultError&& result_error) {
-        ss_ << std::move(result_error.error_string);
-        errno_ = result_error.error_errno;
-        return std::move(*this);
-    }
-
-    const std::string str() const {
-        std::string str = ss_.str();
-        if (append_errno_) {
-            if (str.empty()) {
-                return strerror(errno_);
-            }
-            return str + ": " + strerror(errno_);
-        }
-        return str;
-    }
-
-    int get_errno() const { return errno_; }
-
-    Error(const Error&) = delete;
-    Error(Error&&) = delete;
-    Error& operator=(const Error&) = delete;
-    Error& operator=(Error&&) = delete;
-
-  private:
-    std::stringstream ss_;
-    int errno_;
-    bool append_errno_;
-};
-
-inline Error ErrnoError() {
-    return Error(errno);
-}
-
-template <typename T>
-class [[nodiscard]] Result {
-  public:
-    Result() {}
-
-    template <typename U, typename... V,
-              typename = std::enable_if_t<!(std::is_same_v<std::decay_t<U>, Result<T>> &&
-                                            sizeof...(V) == 0)>>
-    Result(U&& result, V&&... results)
-        : contents_(std::in_place_index_t<0>(), std::forward<U>(result),
-                    std::forward<V>(results)...) {}
-
-    Result(Error&& error) : contents_(std::in_place_index_t<1>(), error.str(), error.get_errno()) {}
-    Result(const ResultError& result_error)
-        : contents_(std::in_place_index_t<1>(), result_error.error_string,
-                    result_error.error_errno) {}
-    Result(ResultError&& result_error)
-        : contents_(std::in_place_index_t<1>(), std::move(result_error.error_string),
-                    result_error.error_errno) {}
-
-    void IgnoreError() const {}
-
-    bool has_value() const { return contents_.index() == 0; }
-
-    T& value() & { return std::get<0>(contents_); }
-    const T& value() const & { return std::get<0>(contents_); }
-    T&& value() && { return std::get<0>(std::move(contents_)); }
-    const T&& value() const && { return std::get<0>(std::move(contents_)); }
-
-    const ResultError& error() const & { return std::get<1>(contents_); }
-    ResultError&& error() && { return std::get<1>(std::move(contents_)); }
-    const ResultError&& error() const && { return std::get<1>(std::move(contents_)); }
-
-    const std::string& error_string() const & { return std::get<1>(contents_).error_string; }
-    std::string&& error_string() && { return std::get<1>(std::move(contents_)).error_string; }
-    const std::string&& error_string() const && {
-        return std::get<1>(std::move(contents_)).error_string;
-    }
-
-    int error_errno() const { return std::get<1>(contents_).error_errno; }
-
-    explicit operator bool() const { return has_value(); }
-
-    T& operator*() & { return value(); }
-    const T& operator*() const & { return value(); }
-    T&& operator*() && { return std::move(value()); }
-    const T&& operator*() const && { return std::move(value()); }
-
-    T* operator->() { return &value(); }
-    const T* operator->() const { return &value(); }
-
-  private:
-    std::variant<T, ResultError> contents_;
-};
-
-using Success = std::monostate;
-
-}  // namespace init
-}  // namespace android
-
-#endif
+using android::base::ErrnoError;
+using android::base::Error;
+using android::base::Result;
+using android::base::ResultError;
diff --git a/init/result_test.cpp b/init/result_test.cpp
deleted file mode 100644
index 327b444..0000000
--- a/init/result_test.cpp
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "result.h"
-
-#include "errno.h"
-
-#include <string>
-
-#include <gtest/gtest.h>
-
-using namespace std::string_literals;
-
-namespace android {
-namespace init {
-
-TEST(result, result_accessors) {
-    Result<std::string> result = "success";
-    ASSERT_TRUE(result);
-    ASSERT_TRUE(result.has_value());
-
-    EXPECT_EQ("success", *result);
-    EXPECT_EQ("success", result.value());
-
-    EXPECT_EQ('s', result->data()[0]);
-}
-
-TEST(result, result_accessors_rvalue) {
-    ASSERT_TRUE(Result<std::string>("success"));
-    ASSERT_TRUE(Result<std::string>("success").has_value());
-
-    EXPECT_EQ("success", *Result<std::string>("success"));
-    EXPECT_EQ("success", Result<std::string>("success").value());
-
-    EXPECT_EQ('s', Result<std::string>("success")->data()[0]);
-}
-
-TEST(result, result_success) {
-    Result<Success> result = Success();
-    ASSERT_TRUE(result);
-    ASSERT_TRUE(result.has_value());
-
-    EXPECT_EQ(Success(), *result);
-    EXPECT_EQ(Success(), result.value());
-}
-
-TEST(result, result_success_rvalue) {
-    // Success() doesn't actually create a Result<Success> object, but rather an object that can be
-    // implicitly constructed into a Result<Success> object.
-
-    auto MakeRvalueSuccessResult = []() -> Result<Success> { return Success(); };
-    ASSERT_TRUE(MakeRvalueSuccessResult());
-    ASSERT_TRUE(MakeRvalueSuccessResult().has_value());
-
-    EXPECT_EQ(Success(), *MakeRvalueSuccessResult());
-    EXPECT_EQ(Success(), MakeRvalueSuccessResult().value());
-}
-
-TEST(result, result_error) {
-    Result<Success> result = Error() << "failure" << 1;
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    EXPECT_EQ(0, result.error_errno());
-    EXPECT_EQ("failure1", result.error_string());
-}
-
-TEST(result, result_error_empty) {
-    Result<Success> result = Error();
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    EXPECT_EQ(0, result.error_errno());
-    EXPECT_EQ("", result.error_string());
-}
-
-TEST(result, result_error_rvalue) {
-    // Error() and ErrnoError() aren't actually used to create a Result<T> object.
-    // Under the hood, they are an intermediate class that can be implicitly constructed into a
-    // Result<T>.  This is needed both to create the ostream and because Error() itself, by
-    // definition will not know what the type, T, of the underlying Result<T> object that it would
-    // create is.
-
-    auto MakeRvalueErrorResult = []() -> Result<Success> { return Error() << "failure" << 1; };
-    ASSERT_FALSE(MakeRvalueErrorResult());
-    ASSERT_FALSE(MakeRvalueErrorResult().has_value());
-
-    EXPECT_EQ(0, MakeRvalueErrorResult().error_errno());
-    EXPECT_EQ("failure1", MakeRvalueErrorResult().error_string());
-}
-
-TEST(result, result_errno_error) {
-    constexpr int test_errno = 6;
-    errno = test_errno;
-    Result<Success> result = ErrnoError() << "failure" << 1;
-
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    EXPECT_EQ(test_errno, result.error_errno());
-    EXPECT_EQ("failure1: "s + strerror(test_errno), result.error_string());
-}
-
-TEST(result, result_errno_error_no_text) {
-    constexpr int test_errno = 6;
-    errno = test_errno;
-    Result<Success> result = ErrnoError();
-
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    EXPECT_EQ(test_errno, result.error_errno());
-    EXPECT_EQ(strerror(test_errno), result.error_string());
-}
-
-TEST(result, result_error_from_other_result) {
-    auto error_text = "test error"s;
-    Result<Success> result = Error() << error_text;
-
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    Result<std::string> result2 = result.error();
-
-    ASSERT_FALSE(result2);
-    ASSERT_FALSE(result2.has_value());
-
-    EXPECT_EQ(0, result.error_errno());
-    EXPECT_EQ(error_text, result.error_string());
-}
-
-TEST(result, result_error_through_ostream) {
-    auto error_text = "test error"s;
-    Result<Success> result = Error() << error_text;
-
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    Result<std::string> result2 = Error() << result.error();
-
-    ASSERT_FALSE(result2);
-    ASSERT_FALSE(result2.has_value());
-
-    EXPECT_EQ(0, result.error_errno());
-    EXPECT_EQ(error_text, result.error_string());
-}
-
-TEST(result, result_errno_error_through_ostream) {
-    auto error_text = "test error"s;
-    constexpr int test_errno = 6;
-    errno = 6;
-    Result<Success> result = ErrnoError() << error_text;
-
-    errno = 0;
-
-    ASSERT_FALSE(result);
-    ASSERT_FALSE(result.has_value());
-
-    Result<std::string> result2 = Error() << result.error();
-
-    ASSERT_FALSE(result2);
-    ASSERT_FALSE(result2.has_value());
-
-    EXPECT_EQ(test_errno, result.error_errno());
-    EXPECT_EQ(error_text + ": " + strerror(test_errno), result.error_string());
-}
-
-TEST(result, constructor_forwarding) {
-    auto result = Result<std::string>(5, 'a');
-
-    ASSERT_TRUE(result);
-    ASSERT_TRUE(result.has_value());
-
-    EXPECT_EQ("aaaaa", *result);
-}
-
-struct ConstructorTracker {
-    static size_t constructor_called;
-    static size_t copy_constructor_called;
-    static size_t move_constructor_called;
-    static size_t copy_assignment_called;
-    static size_t move_assignment_called;
-
-    template <typename T>
-    ConstructorTracker(T&& string) : string(string) {
-        ++constructor_called;
-    }
-
-    ConstructorTracker(const ConstructorTracker& ct) {
-        ++copy_constructor_called;
-        string = ct.string;
-    }
-    ConstructorTracker(ConstructorTracker&& ct) noexcept {
-        ++move_constructor_called;
-        string = std::move(ct.string);
-    }
-    ConstructorTracker& operator=(const ConstructorTracker& ct) {
-        ++copy_assignment_called;
-        string = ct.string;
-        return *this;
-    }
-    ConstructorTracker& operator=(ConstructorTracker&& ct) noexcept {
-        ++move_assignment_called;
-        string = std::move(ct.string);
-        return *this;
-    }
-
-    std::string string;
-};
-
-size_t ConstructorTracker::constructor_called = 0;
-size_t ConstructorTracker::copy_constructor_called = 0;
-size_t ConstructorTracker::move_constructor_called = 0;
-size_t ConstructorTracker::copy_assignment_called = 0;
-size_t ConstructorTracker::move_assignment_called = 0;
-
-Result<ConstructorTracker> ReturnConstructorTracker(const std::string& in) {
-    if (in.empty()) {
-        return "literal string";
-    }
-    if (in == "test2") {
-        return ConstructorTracker(in + in + "2");
-    }
-    ConstructorTracker result(in + " " + in);
-    return result;
-};
-
-TEST(result, no_copy_on_return) {
-    // If returning parameters that may be used to implicitly construct the type T of Result<T>,
-    // then those parameters are forwarded to the construction of Result<T>.
-
-    // If returning an prvalue or xvalue, it will be move constructed during the construction of
-    // Result<T>.
-
-    // This check ensures that that is the case, and particularly that no copy constructors
-    // are called.
-
-    auto result1 = ReturnConstructorTracker("");
-    ASSERT_TRUE(result1);
-    EXPECT_EQ("literal string", result1->string);
-    EXPECT_EQ(1U, ConstructorTracker::constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::move_constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
-    EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
-
-    auto result2 = ReturnConstructorTracker("test2");
-    ASSERT_TRUE(result2);
-    EXPECT_EQ("test2test22", result2->string);
-    EXPECT_EQ(2U, ConstructorTracker::constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
-    EXPECT_EQ(1U, ConstructorTracker::move_constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
-    EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
-
-    auto result3 = ReturnConstructorTracker("test3");
-    ASSERT_TRUE(result3);
-    EXPECT_EQ("test3 test3", result3->string);
-    EXPECT_EQ(3U, ConstructorTracker::constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::copy_constructor_called);
-    EXPECT_EQ(2U, ConstructorTracker::move_constructor_called);
-    EXPECT_EQ(0U, ConstructorTracker::copy_assignment_called);
-    EXPECT_EQ(0U, ConstructorTracker::move_assignment_called);
-}
-
-// Below two tests require that we do not hide the move constructor with our forwarding reference
-// constructor.  This is done with by disabling the forwarding reference constructor if its first
-// and only type is Result<T>.
-TEST(result, result_result_with_success) {
-    auto return_result_result_with_success = []() -> Result<Result<Success>> {
-        return Result<Success>();
-    };
-    auto result = return_result_result_with_success();
-    ASSERT_TRUE(result);
-    ASSERT_TRUE(*result);
-
-    auto inner_result = result.value();
-    ASSERT_TRUE(inner_result);
-}
-
-TEST(result, result_result_with_failure) {
-    auto return_result_result_with_error = []() -> Result<Result<Success>> {
-        return Result<Success>(ResultError("failure string", 6));
-    };
-    auto result = return_result_result_with_error();
-    ASSERT_TRUE(result);
-    ASSERT_FALSE(*result);
-    EXPECT_EQ("failure string", result->error_string());
-    EXPECT_EQ(6, result->error_errno());
-}
-
-// This test requires that we disable the forwarding reference constructor if Result<T> is the
-// *only* type that we are forwarding.  In otherwords, if we are forwarding Result<T>, int to
-// construct a Result<T>, then we still need the constructor.
-TEST(result, result_two_parameter_constructor_same_type) {
-    struct TestStruct {
-        TestStruct(int value) : value_(value) {}
-        TestStruct(Result<TestStruct> result, int value) : value_(result->value_ * value) {}
-        int value_;
-    };
-
-    auto return_test_struct = []() -> Result<TestStruct> { return {Result<TestStruct>(6), 6}; };
-
-    auto result = return_test_struct();
-    ASSERT_TRUE(result);
-    EXPECT_EQ(36, result->value_);
-}
-
-TEST(result, die_on_access_failed_result) {
-    Result<std::string> result = Error();
-    ASSERT_DEATH(*result, "");
-}
-
-TEST(result, die_on_get_error_succesful_result) {
-    Result<std::string> result = "success";
-    ASSERT_DEATH(result.error_string(), "");
-}
-
-}  // namespace init
-}  // namespace android
diff --git a/init/rlimit_parser.cpp b/init/rlimit_parser.cpp
index 1e0754a..476a46a 100644
--- a/init/rlimit_parser.cpp
+++ b/init/rlimit_parser.cpp
@@ -77,7 +77,7 @@
         return Error() << "Could not parse hard limit '" << args[3] << "'";
     }
 
-    return {resource, limit};
+    return std::pair{resource, limit};
 }
 
 }  // namespace init
diff --git a/init/rlimit_parser_test.cpp b/init/rlimit_parser_test.cpp
index 659ba8a..3c3f848 100644
--- a/init/rlimit_parser_test.cpp
+++ b/init/rlimit_parser_test.cpp
@@ -29,7 +29,7 @@
     ASSERT_EQ(4U, input.size());
     auto result = ParseRlimit(input);
 
-    ASSERT_TRUE(result) << "input: " << input[1];
+    ASSERT_TRUE(result.ok()) << "input: " << input[1];
     const auto& [resource, rlimit] = *result;
     const auto& [expected_resource, expected_rlimit] = expected_result;
     EXPECT_EQ(expected_resource, resource);
@@ -42,9 +42,9 @@
     ASSERT_EQ(4U, input.size());
     auto result = ParseRlimit(input);
 
-    ASSERT_FALSE(result) << "input: " << input[1];
-    EXPECT_EQ(expected_result, result.error_string());
-    EXPECT_EQ(0, result.error_errno());
+    ASSERT_FALSE(result.ok()) << "input: " << input[1];
+    EXPECT_EQ(expected_result, result.error().message());
+    EXPECT_EQ(0, result.error().code());
 }
 
 TEST(rlimit, RlimitSuccess) {
diff --git a/init/security.cpp b/init/security.cpp
index a3494a2..6cbe642 100644
--- a/init/security.cpp
+++ b/init/security.cpp
@@ -18,14 +18,19 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <linux/perf_event.h>
+#include <sys/ioctl.h>
+#include <sys/syscall.h>
 #include <unistd.h>
 
 #include <fstream>
 
 #include <android-base/logging.h>
+#include <android-base/properties.h>
 #include <android-base/unique_fd.h>
 
 using android::base::unique_fd;
+using android::base::SetProperty;
 
 namespace android {
 namespace init {
@@ -43,14 +48,14 @@
 // devices/configurations where these I/O operations are blocking for a long
 // time. We do not reboot or halt on failures, as this is a best-effort
 // attempt.
-Result<Success> MixHwrngIntoLinuxRngAction(const BuiltinArguments&) {
+Result<void> MixHwrngIntoLinuxRngAction(const BuiltinArguments&) {
     unique_fd hwrandom_fd(
         TEMP_FAILURE_RETRY(open("/dev/hw_random", O_RDONLY | O_NOFOLLOW | O_CLOEXEC)));
     if (hwrandom_fd == -1) {
         if (errno == ENOENT) {
             LOG(INFO) << "/dev/hw_random not found";
             // It's not an error to not have a Hardware RNG.
-            return Success();
+            return {};
         }
         return ErrnoError() << "Failed to open /dev/hw_random";
     }
@@ -80,10 +85,10 @@
     }
 
     LOG(INFO) << "Mixed " << total_bytes_written << " bytes from /dev/hw_random into /dev/urandom";
-    return Success();
+    return {};
 }
 
-static bool SetHighestAvailableOptionValue(std::string path, int min, int max) {
+static bool SetHighestAvailableOptionValue(const std::string& path, int min, int max) {
     std::ifstream inf(path, std::fstream::in);
     if (!inf) {
         LOG(ERROR) << "Cannot open for reading: " << path;
@@ -147,31 +152,31 @@
 // 9e08f57d684a x86: mm: support ARCH_MMAP_RND_BITS
 // ec9ee4acd97c drivers: char: random: add get_random_long()
 // 5ef11c35ce86 mm: ASLR: use get_random_long()
-Result<Success> SetMmapRndBitsAction(const BuiltinArguments&) {
+Result<void> SetMmapRndBitsAction(const BuiltinArguments&) {
 // values are arch-dependent
 #if defined(USER_MODE_LINUX)
     // uml does not support mmap_rnd_bits
-    return Success();
+    return {};
 #elif defined(__aarch64__)
     // arm64 supports 18 - 33 bits depending on pagesize and VA_SIZE
     if (SetMmapRndBitsMin(33, 24, false) && SetMmapRndBitsMin(16, 16, true)) {
-        return Success();
+        return {};
     }
 #elif defined(__x86_64__)
     // x86_64 supports 28 - 32 bits
     if (SetMmapRndBitsMin(32, 32, false) && SetMmapRndBitsMin(16, 16, true)) {
-        return Success();
+        return {};
     }
 #elif defined(__arm__) || defined(__i386__)
     // check to see if we're running on 64-bit kernel
     bool h64 = !access(MMAP_RND_COMPAT_PATH, F_OK);
     // supported 32-bit architecture must have 16 bits set
     if (SetMmapRndBitsMin(16, 16, h64)) {
-        return Success();
+        return {};
     }
 #elif defined(__mips__) || defined(__mips64__)
     // TODO: add mips support b/27788820
-    return Success();
+    return {};
 #else
     LOG(ERROR) << "Unknown architecture";
 #endif
@@ -187,14 +192,70 @@
 // Set kptr_restrict to the highest available level.
 //
 // Aborts if unable to set this to an acceptable value.
-Result<Success> SetKptrRestrictAction(const BuiltinArguments&) {
+Result<void> SetKptrRestrictAction(const BuiltinArguments&) {
     std::string path = KPTR_RESTRICT_PATH;
 
     if (!SetHighestAvailableOptionValue(path, KPTR_RESTRICT_MINVALUE, KPTR_RESTRICT_MAXVALUE)) {
         LOG(FATAL) << "Unable to set adequate kptr_restrict value!";
         return Error();
     }
-    return Success();
+    return {};
+}
+
+// Test for whether the kernel has SELinux hooks for the perf_event_open()
+// syscall. If the hooks are present, we can stop using the other permission
+// mechanism (perf_event_paranoid sysctl), and use only the SELinux policy to
+// control access to the syscall. The hooks are expected on all Android R
+// release kernels, but might be absent on devices that upgrade while keeping an
+// older kernel.
+//
+// There is no direct/synchronous way of finding out that a syscall failed due
+// to SELinux. Therefore we test for a combination of a success and a failure
+// that are explained by the platform's SELinux policy for the "init" domain:
+// * cpu-scoped perf_event is allowed
+// * ioctl() on the event fd is disallowed with EACCES
+//
+// Since init has CAP_SYS_ADMIN, these tests are not affected by the system-wide
+// perf_event_paranoid sysctl.
+//
+// If the SELinux hooks are detected, a special sysprop
+// (sys.init.perf_lsm_hooks) is set, which translates to a modification of
+// perf_event_paranoid (through init.rc sysprop actions).
+//
+// TODO(b/137092007): this entire test can be removed once the platform stops
+// supporting kernels that precede the perf_event_open hooks (Android common
+// kernels 4.4 and 4.9).
+Result<void> TestPerfEventSelinuxAction(const BuiltinArguments&) {
+    // Use a trivial event that will be configured, but not started.
+    struct perf_event_attr pe = {
+            .type = PERF_TYPE_SOFTWARE,
+            .size = sizeof(struct perf_event_attr),
+            .config = PERF_COUNT_SW_TASK_CLOCK,
+            .disabled = 1,
+            .exclude_kernel = 1,
+    };
+
+    // Open the above event targeting cpu 0. (EINTR not possible.)
+    unique_fd fd(static_cast<int>(syscall(__NR_perf_event_open, &pe, /*pid=*/-1,
+                                          /*cpu=*/0,
+                                          /*group_fd=*/-1, /*flags=*/0)));
+    if (fd == -1) {
+        PLOG(ERROR) << "Unexpected perf_event_open error";
+        return {};
+    }
+
+    int ioctl_ret = ioctl(fd, PERF_EVENT_IOC_RESET);
+    if (ioctl_ret != -1) {
+        // Success implies that the kernel doesn't have the hooks.
+        return {};
+    } else if (errno != EACCES) {
+        PLOG(ERROR) << "Unexpected perf_event ioctl error";
+        return {};
+    }
+
+    // Conclude that the SELinux hooks are present.
+    SetProperty("sys.init.perf_lsm_hooks", "1");
+    return {};
 }
 
 }  // namespace init
diff --git a/init/security.h b/init/security.h
index 6f6b944..43c2739 100644
--- a/init/security.h
+++ b/init/security.h
@@ -26,9 +26,10 @@
 namespace android {
 namespace init {
 
-Result<Success> MixHwrngIntoLinuxRngAction(const BuiltinArguments&);
-Result<Success> SetMmapRndBitsAction(const BuiltinArguments&);
-Result<Success> SetKptrRestrictAction(const BuiltinArguments&);
+Result<void> MixHwrngIntoLinuxRngAction(const BuiltinArguments&);
+Result<void> SetMmapRndBitsAction(const BuiltinArguments&);
+Result<void> SetKptrRestrictAction(const BuiltinArguments&);
+Result<void> TestPerfEventSelinuxAction(const BuiltinArguments&);
 
 }  // namespace init
 }  // namespace android
diff --git a/init/selabel.cpp b/init/selabel.cpp
new file mode 100644
index 0000000..daeb832
--- /dev/null
+++ b/init/selabel.cpp
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "selabel.h"
+
+#include <selinux/android.h>
+
+namespace android {
+namespace init {
+
+namespace {
+
+selabel_handle* sehandle = nullptr;
+}
+
+// selinux_android_file_context_handle() takes on the order of 10+ms to run, so we want to cache
+// its value.  selinux_android_restorecon() also needs an sehandle for file context look up.  It
+// will create and store its own copy, but selinux_android_set_sehandle() can be used to provide
+// one, thus eliminating an extra call to selinux_android_file_context_handle().
+void SelabelInitialize() {
+    sehandle = selinux_android_file_context_handle();
+    selinux_android_set_sehandle(sehandle);
+}
+
+// A C++ wrapper around selabel_lookup() using the cached sehandle.
+// If sehandle is null, this returns success with an empty context.
+bool SelabelLookupFileContext(const std::string& key, int type, std::string* result) {
+    result->clear();
+
+    if (!sehandle) return true;
+
+    char* context;
+    if (selabel_lookup(sehandle, &context, key.c_str(), type) != 0) {
+        return false;
+    }
+    *result = context;
+    free(context);
+    return true;
+}
+
+// A C++ wrapper around selabel_lookup_best_match() using the cached sehandle.
+// If sehandle is null, this returns success with an empty context.
+bool SelabelLookupFileContextBestMatch(const std::string& key,
+                                       const std::vector<std::string>& aliases, int type,
+                                       std::string* result) {
+    result->clear();
+
+    if (!sehandle) return true;
+
+    std::vector<const char*> c_aliases;
+    for (const auto& alias : aliases) {
+        c_aliases.emplace_back(alias.c_str());
+    }
+    c_aliases.emplace_back(nullptr);
+
+    char* context;
+    if (selabel_lookup_best_match(sehandle, &context, key.c_str(), &c_aliases[0], type) != 0) {
+        return false;
+    }
+    *result = context;
+    free(context);
+    return true;
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/selabel.h b/init/selabel.h
new file mode 100644
index 0000000..5d590b2
--- /dev/null
+++ b/init/selabel.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+namespace android {
+namespace init {
+
+void SelabelInitialize();
+bool SelabelLookupFileContext(const std::string& key, int type, std::string* result);
+bool SelabelLookupFileContextBestMatch(const std::string& key,
+                                       const std::vector<std::string>& aliases, int type,
+                                       std::string* result);
+
+}  // namespace init
+}  // namespace android
diff --git a/init/selinux.cpp b/init/selinux.cpp
index 86238b4..5a0255a 100644
--- a/init/selinux.cpp
+++ b/init/selinux.cpp
@@ -36,21 +36,25 @@
 // The split SEPolicy is loaded as described below:
 // 1) There is a precompiled SEPolicy located at either /vendor/etc/selinux/precompiled_sepolicy or
 //    /odm/etc/selinux/precompiled_sepolicy if odm parition is present.  Stored along with this file
-//    are the sha256 hashes of the parts of the SEPolicy on /system and /product that were used to
-//    compile this precompiled policy.  The system partition contains a similar sha256 of the parts
-//    of the SEPolicy that it currently contains.  Symmetrically, product paritition contains a
-//    sha256 of its SEPolicy.  System loads this precompiled_sepolicy directly if and only if hashes
-//    for system policy match and hashes for product policy match.
-// 2) If these hashes do not match, then either /system or /product (or both) have been updated out
-//    of sync with /vendor and the init needs to compile the SEPolicy.  /system contains the
-//    SEPolicy compiler, secilc, and it is used by the LoadSplitPolicy() function below to compile
-//    the SEPolicy to a temp directory and load it.  That function contains even more documentation
-//    with the specific implementation details of how the SEPolicy is compiled if needed.
+//    are the sha256 hashes of the parts of the SEPolicy on /system, /system_ext and /product that
+//    were used to compile this precompiled policy.  The system partition contains a similar sha256
+//    of the parts of the SEPolicy that it currently contains.  Symmetrically, system_ext and
+//    product paritition contain sha256 hashes of their SEPolicy.  The init loads this
+//    precompiled_sepolicy directly if and only if the hashes along with the precompiled SEPolicy on
+//    /vendor or /odm match the hashes for system, system_ext and product SEPolicy, respectively.
+// 2) If these hashes do not match, then either /system or /system_ext or /product (or some of them)
+//    have been updated out of sync with /vendor (or /odm if it is present) and the init needs to
+//    compile the SEPolicy.  /system contains the SEPolicy compiler, secilc, and it is used by the
+//    LoadSplitPolicy() function below to compile the SEPolicy to a temp directory and load it.
+//    That function contains even more documentation with the specific implementation details of how
+//    the SEPolicy is compiled if needed.
 
 #include "selinux.h"
 
 #include <android/api-level.h>
 #include <fcntl.h>
+#include <linux/audit.h>
+#include <linux/netlink.h>
 #include <stdlib.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -59,10 +63,15 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
+#include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 #include <fs_avb/fs_avb.h>
+#include <fs_mgr.h>
+#include <libgsi/libgsi.h>
+#include <libsnapshot/snapshot.h>
 #include <selinux/android.h>
 
+#include "block_dev_initializer.h"
 #include "debug_ramdisk.h"
 #include "reboot_utils.h"
 #include "util.h"
@@ -73,25 +82,23 @@
 using android::base::Timer;
 using android::base::unique_fd;
 using android::fs_mgr::AvbHandle;
+using android::snapshot::SnapshotManager;
 
 namespace android {
 namespace init {
 
 namespace {
 
-selabel_handle* sehandle = nullptr;
-
 enum EnforcingStatus { SELINUX_PERMISSIVE, SELINUX_ENFORCING };
 
 EnforcingStatus StatusFromCmdline() {
     EnforcingStatus status = SELINUX_ENFORCING;
 
-    import_kernel_cmdline(false,
-                          [&](const std::string& key, const std::string& value, bool in_qemu) {
-                              if (key == "androidboot.selinux" && value == "permissive") {
-                                  status = SELINUX_PERMISSIVE;
-                              }
-                          });
+    ImportKernelCmdline([&](const std::string& key, const std::string& value) {
+        if (key == "androidboot.selinux" && value == "permissive") {
+            status = SELINUX_PERMISSIVE;
+        }
+    });
 
     return status;
 }
@@ -228,6 +235,13 @@
                       "/system/etc/selinux/plat_sepolicy_and_mapping.sha256";
         return false;
     }
+    std::string actual_system_ext_id;
+    if (!ReadFirstLine("/system_ext/etc/selinux/system_ext_sepolicy_and_mapping.sha256",
+                       &actual_system_ext_id)) {
+        PLOG(INFO) << "Failed to read "
+                      "/system_ext/etc/selinux/system_ext_sepolicy_and_mapping.sha256";
+        return false;
+    }
     std::string actual_product_id;
     if (!ReadFirstLine("/product/etc/selinux/product_sepolicy_and_mapping.sha256",
                        &actual_product_id)) {
@@ -243,6 +257,13 @@
         file->clear();
         return false;
     }
+    std::string precompiled_system_ext_id;
+    std::string precompiled_system_ext_sha256 = *file + ".system_ext_sepolicy_and_mapping.sha256";
+    if (!ReadFirstLine(precompiled_system_ext_sha256.c_str(), &precompiled_system_ext_id)) {
+        PLOG(INFO) << "Failed to read " << precompiled_system_ext_sha256;
+        file->clear();
+        return false;
+    }
     std::string precompiled_product_id;
     std::string precompiled_product_sha256 = *file + ".product_sepolicy_and_mapping.sha256";
     if (!ReadFirstLine(precompiled_product_sha256.c_str(), &precompiled_product_id)) {
@@ -251,6 +272,7 @@
         return false;
     }
     if (actual_plat_id.empty() || actual_plat_id != precompiled_plat_id ||
+        actual_system_ext_id.empty() || actual_system_ext_id != precompiled_system_ext_id ||
         actual_product_id.empty() || actual_product_id != precompiled_product_id) {
         file->clear();
         return false;
@@ -330,6 +352,23 @@
     }
     std::string plat_mapping_file("/system/etc/selinux/mapping/" + vend_plat_vers + ".cil");
 
+    std::string plat_compat_cil_file("/system/etc/selinux/mapping/" + vend_plat_vers +
+                                     ".compat.cil");
+    if (access(plat_compat_cil_file.c_str(), F_OK) == -1) {
+        plat_compat_cil_file.clear();
+    }
+
+    std::string system_ext_policy_cil_file("/system_ext/etc/selinux/system_ext_sepolicy.cil");
+    if (access(system_ext_policy_cil_file.c_str(), F_OK) == -1) {
+        system_ext_policy_cil_file.clear();
+    }
+
+    std::string system_ext_mapping_file("/system_ext/etc/selinux/mapping/" + vend_plat_vers +
+                                        ".cil");
+    if (access(system_ext_mapping_file.c_str(), F_OK) == -1) {
+        system_ext_mapping_file.clear();
+    }
+
     std::string product_policy_cil_file("/product/etc/selinux/product_sepolicy.cil");
     if (access(product_policy_cil_file.c_str(), F_OK) == -1) {
         product_policy_cil_file.clear();
@@ -375,6 +414,15 @@
     };
     // clang-format on
 
+    if (!plat_compat_cil_file.empty()) {
+        compile_args.push_back(plat_compat_cil_file.c_str());
+    }
+    if (!system_ext_policy_cil_file.empty()) {
+        compile_args.push_back(system_ext_policy_cil_file.c_str());
+    }
+    if (!system_ext_mapping_file.empty()) {
+        compile_args.push_back(system_ext_mapping_file.c_str());
+    }
     if (!product_policy_cil_file.empty()) {
         compile_args.push_back(product_policy_cil_file.c_str());
     }
@@ -421,8 +469,6 @@
 }
 
 void SelinuxInitialize() {
-    Timer t;
-
     LOG(INFO) << "Loading SELinux policy";
     if (!LoadPolicy()) {
         LOG(FATAL) << "Unable to load SELinux policy";
@@ -432,23 +478,47 @@
     bool is_enforcing = IsEnforcing();
     if (kernel_enforcing != is_enforcing) {
         if (security_setenforce(is_enforcing)) {
-            PLOG(FATAL) << "security_setenforce(%s) failed" << (is_enforcing ? "true" : "false");
+            PLOG(FATAL) << "security_setenforce(" << (is_enforcing ? "true" : "false")
+                        << ") failed";
         }
     }
 
-    if (auto result = WriteFile("/sys/fs/selinux/checkreqprot", "0"); !result) {
+    if (auto result = WriteFile("/sys/fs/selinux/checkreqprot", "0"); !result.ok()) {
         LOG(FATAL) << "Unable to write to /sys/fs/selinux/checkreqprot: " << result.error();
     }
+}
 
-    // init's first stage can't set properties, so pass the time to the second stage.
-    setenv("INIT_SELINUX_TOOK", std::to_string(t.duration().count()).c_str(), 1);
+constexpr size_t kKlogMessageSize = 1024;
+
+void SelinuxAvcLog(char* buf, size_t buf_len) {
+    CHECK_GT(buf_len, 0u);
+
+    size_t str_len = strnlen(buf, buf_len);
+    // trim newline at end of string
+    if (buf[str_len - 1] == '\n') {
+        buf[str_len - 1] = '\0';
+    }
+
+    struct NetlinkMessage {
+        nlmsghdr hdr;
+        char buf[kKlogMessageSize];
+    } request = {};
+
+    request.hdr.nlmsg_flags = NLM_F_REQUEST;
+    request.hdr.nlmsg_type = AUDIT_USER_AVC;
+    request.hdr.nlmsg_len = sizeof(request);
+    strlcpy(request.buf, buf, sizeof(request.buf));
+
+    auto fd = unique_fd{socket(PF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_AUDIT)};
+    if (!fd.ok()) {
+        return;
+    }
+
+    TEMP_FAILURE_RETRY(send(fd, &request, sizeof(request), 0));
 }
 
 }  // namespace
 
-// The files and directories that were created before initial sepolicy load or
-// files on ramdisk need to have their security context restored to the proper
-// value. This must happen before /dev is populated by ueventd.
 void SelinuxRestoreContext() {
     LOG(INFO) << "Running restorecon...";
     selinux_android_restorecon("/dev", 0);
@@ -467,6 +537,14 @@
     selinux_android_restorecon("/dev/device-mapper", 0);
 
     selinux_android_restorecon("/apex", 0);
+
+    selinux_android_restorecon("/linkerconfig", 0);
+
+    // adb remount, snapshot-based updates, and DSUs all create files during
+    // first-stage init.
+    selinux_android_restorecon(SnapshotManager::GetGlobalRollbackIndicatorPath().c_str(), 0);
+    selinux_android_restorecon("/metadata/gsi", SELINUX_ANDROID_RESTORECON_RECURSE |
+                                                        SELINUX_ANDROID_RESTORECON_SKIP_SEHASH);
 }
 
 int SelinuxKlogCallback(int type, const char* fmt, ...) {
@@ -476,53 +554,133 @@
     } else if (type == SELINUX_INFO) {
         severity = android::base::INFO;
     }
-    char buf[1024];
+    char buf[kKlogMessageSize];
     va_list ap;
     va_start(ap, fmt);
-    vsnprintf(buf, sizeof(buf), fmt, ap);
+    int length_written = vsnprintf(buf, sizeof(buf), fmt, ap);
     va_end(ap);
-    android::base::KernelLogger(android::base::MAIN, severity, "selinux", nullptr, 0, buf);
+    if (length_written <= 0) {
+        return 0;
+    }
+    if (type == SELINUX_AVC) {
+        SelinuxAvcLog(buf, sizeof(buf));
+    } else {
+        android::base::KernelLogger(android::base::MAIN, severity, "selinux", nullptr, 0, buf);
+    }
     return 0;
 }
 
-// This function sets up SELinux logging to be written to kmsg, to match init's logging.
 void SelinuxSetupKernelLogging() {
     selinux_callback cb;
     cb.func_log = SelinuxKlogCallback;
     selinux_set_callback(SELINUX_CB_LOG, cb);
 }
 
-// This function returns the Android version with which the vendor SEPolicy was compiled.
-// It is used for version checks such as whether or not vendor_init should be used
 int SelinuxGetVendorAndroidVersion() {
-    if (!IsSplitPolicyDevice()) {
-        // If this device does not split sepolicy files, it's not a Treble device and therefore,
-        // we assume it's always on the latest platform.
-        return __ANDROID_API_FUTURE__;
-    }
+    static int vendor_android_version = [] {
+        if (!IsSplitPolicyDevice()) {
+            // If this device does not split sepolicy files, it's not a Treble device and therefore,
+            // we assume it's always on the latest platform.
+            return __ANDROID_API_FUTURE__;
+        }
 
-    std::string version;
-    if (!GetVendorMappingVersion(&version)) {
-        LOG(FATAL) << "Could not read vendor SELinux version";
-    }
+        std::string version;
+        if (!GetVendorMappingVersion(&version)) {
+            LOG(FATAL) << "Could not read vendor SELinux version";
+        }
 
-    int major_version;
-    std::string major_version_str(version, 0, version.find('.'));
-    if (!ParseInt(major_version_str, &major_version)) {
-        PLOG(FATAL) << "Failed to parse the vendor sepolicy major version " << major_version_str;
-    }
+        int major_version;
+        std::string major_version_str(version, 0, version.find('.'));
+        if (!ParseInt(major_version_str, &major_version)) {
+            PLOG(FATAL) << "Failed to parse the vendor sepolicy major version "
+                        << major_version_str;
+        }
 
-    return major_version;
+        return major_version;
+    }();
+    return vendor_android_version;
 }
 
-// This function initializes SELinux then execs init to run in the init SELinux context.
+// This is for R system.img/system_ext.img to work on old vendor.img as system_ext.img
+// is introduced in R. We mount system_ext in second stage init because the first-stage
+// init in boot.img won't be updated in the system-only OTA scenario.
+void MountMissingSystemPartitions() {
+    android::fs_mgr::Fstab fstab;
+    if (!ReadDefaultFstab(&fstab)) {
+        LOG(ERROR) << "Could not read default fstab";
+    }
+
+    android::fs_mgr::Fstab mounts;
+    if (!ReadFstabFromFile("/proc/mounts", &mounts)) {
+        LOG(ERROR) << "Could not read /proc/mounts";
+    }
+
+    static const std::vector<std::string> kPartitionNames = {"system_ext", "product"};
+
+    android::fs_mgr::Fstab extra_fstab;
+    for (const auto& name : kPartitionNames) {
+        if (GetEntryForMountPoint(&mounts, "/"s + name)) {
+            // The partition is already mounted.
+            continue;
+        }
+
+        auto system_entry = GetEntryForMountPoint(&fstab, "/system");
+        if (!system_entry) {
+            LOG(ERROR) << "Could not find mount entry for /system";
+            break;
+        }
+        if (!system_entry->fs_mgr_flags.logical) {
+            LOG(INFO) << "Skipping mount of " << name << ", system is not dynamic.";
+            break;
+        }
+
+        auto entry = *system_entry;
+        auto partition_name = name + fs_mgr_get_slot_suffix();
+        auto replace_name = "system"s + fs_mgr_get_slot_suffix();
+
+        entry.mount_point = "/"s + name;
+        entry.blk_device =
+                android::base::StringReplace(entry.blk_device, replace_name, partition_name, false);
+        if (!fs_mgr_update_logical_partition(&entry)) {
+            LOG(ERROR) << "Could not update logical partition";
+            continue;
+        }
+
+        extra_fstab.emplace_back(std::move(entry));
+    }
+
+    SkipMountingPartitions(&extra_fstab);
+    if (extra_fstab.empty()) {
+        return;
+    }
+
+    BlockDevInitializer block_dev_init;
+    for (auto& entry : extra_fstab) {
+        if (access(entry.blk_device.c_str(), F_OK) != 0) {
+            auto block_dev = android::base::Basename(entry.blk_device);
+            if (!block_dev_init.InitDmDevice(block_dev)) {
+                LOG(ERROR) << "Failed to find device-mapper node: " << block_dev;
+                continue;
+            }
+        }
+        if (fs_mgr_do_mount_one(entry)) {
+            LOG(ERROR) << "Could not mount " << entry.mount_point;
+        }
+    }
+}
+
 int SetupSelinux(char** argv) {
+    SetStdioToDevNull(argv);
     InitKernelLogging(argv);
 
     if (REBOOT_BOOTLOADER_ON_PANIC) {
         InstallRebootSignalHandlers();
     }
 
+    boot_clock::time_point start_time = boot_clock::now();
+
+    MountMissingSystemPartitions();
+
     // Set up SELinux, loading the SELinux policy.
     SelinuxSetupKernelLogging();
     SelinuxInitialize();
@@ -535,6 +693,8 @@
         PLOG(FATAL) << "restorecon failed of /system/bin/init failed";
     }
 
+    setenv(kEnvSelinuxStartedAt, std::to_string(start_time.time_since_epoch().count()).c_str(), 1);
+
     const char* path = "/system/bin/init";
     const char* args[] = {path, "second_stage", nullptr};
     execv(path, const_cast<char**>(args));
@@ -546,54 +706,5 @@
     return 1;
 }
 
-// selinux_android_file_context_handle() takes on the order of 10+ms to run, so we want to cache
-// its value.  selinux_android_restorecon() also needs an sehandle for file context look up.  It
-// will create and store its own copy, but selinux_android_set_sehandle() can be used to provide
-// one, thus eliminating an extra call to selinux_android_file_context_handle().
-void SelabelInitialize() {
-    sehandle = selinux_android_file_context_handle();
-    selinux_android_set_sehandle(sehandle);
-}
-
-// A C++ wrapper around selabel_lookup() using the cached sehandle.
-// If sehandle is null, this returns success with an empty context.
-bool SelabelLookupFileContext(const std::string& key, int type, std::string* result) {
-    result->clear();
-
-    if (!sehandle) return true;
-
-    char* context;
-    if (selabel_lookup(sehandle, &context, key.c_str(), type) != 0) {
-        return false;
-    }
-    *result = context;
-    free(context);
-    return true;
-}
-
-// A C++ wrapper around selabel_lookup_best_match() using the cached sehandle.
-// If sehandle is null, this returns success with an empty context.
-bool SelabelLookupFileContextBestMatch(const std::string& key,
-                                       const std::vector<std::string>& aliases, int type,
-                                       std::string* result) {
-    result->clear();
-
-    if (!sehandle) return true;
-
-    std::vector<const char*> c_aliases;
-    for (const auto& alias : aliases) {
-        c_aliases.emplace_back(alias.c_str());
-    }
-    c_aliases.emplace_back(nullptr);
-
-    char* context;
-    if (selabel_lookup_best_match(sehandle, &context, key.c_str(), &c_aliases[0], type) != 0) {
-        return false;
-    }
-    *result = context;
-    free(context);
-    return true;
-}
-
 }  // namespace init
 }  // namespace android
diff --git a/init/selinux.h b/init/selinux.h
index 3aa9406..1a41bfd 100644
--- a/init/selinux.h
+++ b/init/selinux.h
@@ -14,28 +14,27 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_SELINUX_H
-#define _INIT_SELINUX_H
-
-#include <string>
-#include <vector>
+#pragma once
 
 namespace android {
 namespace init {
 
+// Initialize SELinux, then exec init to run in the init SELinux context.
 int SetupSelinux(char** argv);
+
+// Restore the proper security context to files and directories on ramdisk, and
+// those that were created before initial sepolicy load.
+// This must happen before /dev is populated by ueventd.
 void SelinuxRestoreContext();
 
+// Set up SELinux logging to be written to kmsg, to match init's logging.
 void SelinuxSetupKernelLogging();
+
+// Return the Android API level with which the vendor SEPolicy was compiled.
+// Used for version checks such as whether or not vendor_init should be used.
 int SelinuxGetVendorAndroidVersion();
 
-void SelabelInitialize();
-bool SelabelLookupFileContext(const std::string& key, int type, std::string* result);
-bool SelabelLookupFileContextBestMatch(const std::string& key,
-                                       const std::vector<std::string>& aliases, int type,
-                                       std::string* result);
+static constexpr char kEnvSelinuxStartedAt[] = "SELINUX_STARTED_AT";
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/service.cpp b/init/service.cpp
index 2db548e..69f944e 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -18,40 +18,33 @@
 
 #include <fcntl.h>
 #include <inttypes.h>
-#include <linux/input.h>
 #include <linux/securebits.h>
 #include <sched.h>
-#include <sys/mount.h>
 #include <sys/prctl.h>
-#include <sys/resource.h>
 #include <sys/stat.h>
 #include <sys/time.h>
-#include <sys/wait.h>
 #include <termios.h>
 #include <unistd.h>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
-#include <android-base/parseint.h>
 #include <android-base/properties.h>
+#include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-#include <hidl-util/FQName.h>
+#include <cutils/sockets.h>
 #include <processgroup/processgroup.h>
 #include <selinux/selinux.h>
-#include <system/thread_defs.h>
 
-#include "rlimit_parser.h"
+#include "lmkd_service.h"
+#include "service_list.h"
 #include "util.h"
 
-#if defined(__ANDROID__)
+#ifdef INIT_FULL_SOURCES
+#include <ApexProperties.sysprop.h>
 #include <android/api-level.h>
-#include <sys/system_properties.h>
 
-#include "init.h"
 #include "mount_namespace.h"
-#include "property_service.h"
 #include "selinux.h"
 #else
 #include "host_init_stubs.h"
@@ -60,11 +53,10 @@
 using android::base::boot_clock;
 using android::base::GetProperty;
 using android::base::Join;
-using android::base::ParseInt;
-using android::base::Split;
+using android::base::make_scope_guard;
+using android::base::SetProperty;
 using android::base::StartsWith;
 using android::base::StringPrintf;
-using android::base::unique_fd;
 using android::base::WriteStringToFile;
 
 namespace android {
@@ -106,87 +98,6 @@
     return computed_context;
 }
 
-Result<Success> Service::SetUpMountNamespace() const {
-    constexpr unsigned int kSafeFlags = MS_NODEV | MS_NOEXEC | MS_NOSUID;
-
-    // Recursively remount / as slave like zygote does so unmounting and mounting /proc
-    // doesn't interfere with the parent namespace's /proc mount. This will also
-    // prevent any other mounts/unmounts initiated by the service from interfering
-    // with the parent namespace but will still allow mount events from the parent
-    // namespace to propagate to the child.
-    if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) {
-        return ErrnoError() << "Could not remount(/) recursively as slave";
-    }
-
-    // umount() then mount() /proc and/or /sys
-    // Note that it is not sufficient to mount with MS_REMOUNT.
-    if (namespace_flags_ & CLONE_NEWPID) {
-        if (umount("/proc") == -1) {
-            return ErrnoError() << "Could not umount(/proc)";
-        }
-        if (mount("", "/proc", "proc", kSafeFlags, "") == -1) {
-            return ErrnoError() << "Could not mount(/proc)";
-        }
-    }
-    bool remount_sys = std::any_of(namespaces_to_enter_.begin(), namespaces_to_enter_.end(),
-                                   [](const auto& entry) { return entry.first == CLONE_NEWNET; });
-    if (remount_sys) {
-        if (umount2("/sys", MNT_DETACH) == -1) {
-            return ErrnoError() << "Could not umount(/sys)";
-        }
-        if (mount("", "/sys", "sysfs", kSafeFlags, "") == -1) {
-            return ErrnoError() << "Could not mount(/sys)";
-        }
-    }
-    return Success();
-}
-
-Result<Success> Service::SetUpPidNamespace() const {
-    if (prctl(PR_SET_NAME, name_.c_str()) == -1) {
-        return ErrnoError() << "Could not set name";
-    }
-
-    pid_t child_pid = fork();
-    if (child_pid == -1) {
-        return ErrnoError() << "Could not fork init inside the PID namespace";
-    }
-
-    if (child_pid > 0) {
-        // So that we exit with the right status.
-        static int init_exitstatus = 0;
-        signal(SIGTERM, [](int) { _exit(init_exitstatus); });
-
-        pid_t waited_pid;
-        int status;
-        while ((waited_pid = wait(&status)) > 0) {
-             // This loop will end when there are no processes left inside the
-             // PID namespace or when the init process inside the PID namespace
-             // gets a signal.
-            if (waited_pid == child_pid) {
-                init_exitstatus = status;
-            }
-        }
-        if (!WIFEXITED(init_exitstatus)) {
-            _exit(EXIT_FAILURE);
-        }
-        _exit(WEXITSTATUS(init_exitstatus));
-    }
-    return Success();
-}
-
-Result<Success> Service::EnterNamespaces() const {
-    for (const auto& [nstype, path] : namespaces_to_enter_) {
-        auto fd = unique_fd{open(path.c_str(), O_RDONLY | O_CLOEXEC)};
-        if (fd == -1) {
-            return ErrnoError() << "Could not open namespace at " << path;
-        }
-        if (setns(fd, nstype) == -1) {
-            return ErrnoError() << "Could not setns() namespace at " << path;
-        }
-    }
-    return Success();
-}
-
 static bool ExpandArgsAndExecv(const std::vector<std::string>& args, bool sigstop) {
     std::vector<std::string> expanded_args;
     std::vector<char*> c_strings;
@@ -194,9 +105,11 @@
     expanded_args.resize(args.size());
     c_strings.push_back(const_cast<char*>(args[0].data()));
     for (std::size_t i = 1; i < args.size(); ++i) {
-        if (!expand_props(args[i], &expanded_args[i])) {
-            LOG(FATAL) << args[0] << ": cannot expand '" << args[i] << "'";
+        auto expanded_arg = ExpandProps(args[i]);
+        if (!expanded_arg.ok()) {
+            LOG(FATAL) << args[0] << ": cannot expand arguments': " << expanded_arg.error();
         }
+        expanded_args[i] = *expanded_arg;
         c_strings.push_back(expanded_args[i].data());
     }
     c_strings.push_back(nullptr);
@@ -208,40 +121,42 @@
     return execv(c_strings[0], c_strings.data()) == 0;
 }
 
-static bool IsRuntimeApexReady() {
+static bool AreRuntimeApexesReady() {
     struct stat buf;
-    return stat("/apex/com.android.runtime/", &buf) == 0;
+    return stat("/apex/com.android.art/", &buf) == 0 &&
+           stat("/apex/com.android.runtime/", &buf) == 0;
 }
 
 unsigned long Service::next_start_order_ = 1;
 bool Service::is_exec_service_running_ = false;
 
 Service::Service(const std::string& name, Subcontext* subcontext_for_restart_commands,
-                 const std::vector<std::string>& args)
-    : Service(name, 0, 0, 0, {}, 0, "", subcontext_for_restart_commands, args) {}
+                 const std::vector<std::string>& args, bool from_apex)
+    : Service(name, 0, 0, 0, {}, 0, "", subcontext_for_restart_commands, args, from_apex) {}
 
 Service::Service(const std::string& name, unsigned flags, uid_t uid, gid_t gid,
-                 const std::vector<gid_t>& supp_gids, unsigned namespace_flags,
+                 const std::vector<gid_t>& supp_gids, int namespace_flags,
                  const std::string& seclabel, Subcontext* subcontext_for_restart_commands,
-                 const std::vector<std::string>& args)
+                 const std::vector<std::string>& args, bool from_apex)
     : name_(name),
       classnames_({"default"}),
       flags_(flags),
       pid_(0),
       crash_count_(0),
-      uid_(uid),
-      gid_(gid),
-      supp_gids_(supp_gids),
-      namespace_flags_(namespace_flags),
+      proc_attr_{.ioprio_class = IoSchedClass_NONE,
+                 .ioprio_pri = 0,
+                 .uid = uid,
+                 .gid = gid,
+                 .supp_gids = supp_gids,
+                 .priority = 0},
+      namespaces_{.flags = namespace_flags},
       seclabel_(seclabel),
       onrestart_(false, subcontext_for_restart_commands, "<Service '" + name + "' onrestart>", 0,
                  "onrestart", {}),
-      ioprio_class_(IoSchedClass_NONE),
-      ioprio_pri_(0),
-      priority_(0),
-      oom_score_adjust_(-1000),
+      oom_score_adjust_(DEFAULT_OOM_SCORE_ADJUST),
       start_order_(0),
-      args_(args) {}
+      args_(args),
+      from_apex_(from_apex) {}
 
 void Service::NotifyStateChange(const std::string& new_state) const {
     if ((flags_ & SVC_TEMPORARY) != 0) {
@@ -250,18 +165,27 @@
     }
 
     std::string prop_name = "init.svc." + name_;
-    property_set(prop_name, new_state);
+    SetProperty(prop_name, new_state);
 
     if (new_state == "running") {
         uint64_t start_ns = time_started_.time_since_epoch().count();
         std::string boottime_property = "ro.boottime." + name_;
         if (GetProperty(boottime_property, "").empty()) {
-            property_set(boottime_property, std::to_string(start_ns));
+            SetProperty(boottime_property, std::to_string(start_ns));
         }
     }
+
+    // init.svc_debug_pid.* properties are only for tests, and should not be used
+    // on device for security checks.
+    std::string pid_property = "init.svc_debug_pid." + name_;
+    if (new_state == "running") {
+        SetProperty(pid_property, std::to_string(pid_));
+    } else if (new_state == "stopped") {
+        SetProperty(pid_property, "");
+    }
 }
 
-void Service::KillProcessGroup(int signal) {
+void Service::KillProcessGroup(int signal, bool report_oneshot) {
     // If we've already seen a successful result from killProcessGroup*(), then we have removed
     // the cgroup already and calling these functions a second time will simply result in an error.
     // This is true regardless of which signal was sent.
@@ -269,26 +193,33 @@
     if (!process_cgroup_empty_) {
         LOG(INFO) << "Sending signal " << signal << " to service '" << name_ << "' (pid " << pid_
                   << ") process group...";
+        int max_processes = 0;
         int r;
         if (signal == SIGTERM) {
-            r = killProcessGroupOnce(uid_, pid_, signal);
+            r = killProcessGroupOnce(proc_attr_.uid, pid_, signal, &max_processes);
         } else {
-            r = killProcessGroup(uid_, pid_, signal);
+            r = killProcessGroup(proc_attr_.uid, pid_, signal, &max_processes);
+        }
+
+        if (report_oneshot && max_processes > 0) {
+            LOG(WARNING)
+                    << "Killed " << max_processes
+                    << " additional processes from a oneshot process group for service '" << name_
+                    << "'. This is new behavior, previously child processes would not be killed in "
+                       "this case.";
         }
 
         if (r == 0) process_cgroup_empty_ = true;
     }
+
+    if (oom_score_adjust_ != DEFAULT_OOM_SCORE_ADJUST) {
+        LmkdUnregister(name_, pid_);
+    }
 }
 
-void Service::SetProcessAttributes() {
-    for (const auto& rlimit : rlimits_) {
-        if (setrlimit(rlimit.first, &rlimit.second) == -1) {
-            LOG(FATAL) << StringPrintf("setrlimit(%d, {rlim_cur=%ld, rlim_max=%ld}) failed",
-                                       rlimit.first, rlimit.second.rlim_cur, rlimit.second.rlim_max);
-        }
-    }
+void Service::SetProcessAttributesAndCaps() {
     // Keep capabilites on uid change.
-    if (capabilities_ && uid_) {
+    if (capabilities_ && proc_attr_.uid) {
         // If Android is running in a container, some securebits might already
         // be locked, so don't change those.
         unsigned long securebits = prctl(PR_GET_SECUREBITS);
@@ -301,37 +232,21 @@
         }
     }
 
-    // TODO: work out why this fails for `console` then upgrade to FATAL.
-    if (setpgid(0, getpid()) == -1) PLOG(ERROR) << "setpgid failed for " << name_;
+    if (auto result = SetProcessAttributes(proc_attr_); !result.ok()) {
+        LOG(FATAL) << "cannot set attribute for " << name_ << ": " << result.error();
+    }
 
-    if (gid_) {
-        if (setgid(gid_) != 0) {
-            PLOG(FATAL) << "setgid failed for " << name_;
-        }
-    }
-    if (setgroups(supp_gids_.size(), &supp_gids_[0]) != 0) {
-        PLOG(FATAL) << "setgroups failed for " << name_;
-    }
-    if (uid_) {
-        if (setuid(uid_) != 0) {
-            PLOG(FATAL) << "setuid failed for " << name_;
-        }
-    }
     if (!seclabel_.empty()) {
         if (setexeccon(seclabel_.c_str()) < 0) {
             PLOG(FATAL) << "cannot setexeccon('" << seclabel_ << "') for " << name_;
         }
     }
-    if (priority_ != 0) {
-        if (setpriority(PRIO_PROCESS, 0, priority_) != 0) {
-            PLOG(FATAL) << "setpriority failed for " << name_;
-        }
-    }
+
     if (capabilities_) {
         if (!SetCapsForExec(*capabilities_)) {
             LOG(FATAL) << "cannot set capabilities for " << name_;
         }
-    } else if (uid_) {
+    } else if (proc_attr_.uid) {
         // Inheritable caps can be non-zero when running in a container.
         if (!DropInheritableCaps()) {
             LOG(FATAL) << "cannot drop inheritable caps for " << name_;
@@ -341,17 +256,33 @@
 
 void Service::Reap(const siginfo_t& siginfo) {
     if (!(flags_ & SVC_ONESHOT) || (flags_ & SVC_RESTART)) {
-        KillProcessGroup(SIGKILL);
+        KillProcessGroup(SIGKILL, false);
+    } else {
+        // Legacy behavior from ~2007 until Android R: this else branch did not exist and we did not
+        // kill the process group in this case.
+        if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_R__) {
+            // The new behavior in Android R is to kill these process groups in all cases.  The
+            // 'true' parameter instructions KillProcessGroup() to report a warning message where it
+            // detects a difference in behavior has occurred.
+            KillProcessGroup(SIGKILL, true);
+        }
     }
 
-    // Remove any descriptor resources we may have created.
-    std::for_each(descriptors_.begin(), descriptors_.end(),
-                  std::bind(&DescriptorInfo::Clean, std::placeholders::_1));
+    // Remove any socket resources we may have created.
+    for (const auto& socket : sockets_) {
+        auto path = ANDROID_SOCKET_DIR "/" + socket.name;
+        unlink(path.c_str());
+    }
 
     for (const auto& f : reap_callbacks_) {
         f(siginfo);
     }
 
+    if ((siginfo.si_code != CLD_EXITED || siginfo.si_status != 0) && on_failure_reboot_target_) {
+        LOG(ERROR) << "Service with 'reboot_on_failure' option failed, shutting down system.";
+        trigger_shutdown(*on_failure_reboot_target_);
+    }
+
     if (flags_ & SVC_EXEC) UnSetExec();
 
     if (flags_ & SVC_TEMPORARY) return;
@@ -372,10 +303,17 @@
         return;
     }
 
+#if INIT_FULL_SOURCES
+    static bool is_apex_updatable = android::sysprop::ApexProperties::updatable().value_or(false);
+#else
+    static bool is_apex_updatable = false;
+#endif
+    const bool is_process_updatable = !pre_apexd_ && is_apex_updatable;
+
     // If we crash > 4 times in 4 minutes or before boot_completed,
     // reboot into bootloader or set crashing property
     boot_clock::time_point now = boot_clock::now();
-    if (((flags_ & SVC_CRITICAL) || !pre_apexd_) && !(flags_ & SVC_RESTART)) {
+    if (((flags_ & SVC_CRITICAL) || is_process_updatable) && !(flags_ & SVC_RESTART)) {
         bool boot_completed = android::base::GetBoolProperty("sys.boot_completed", false);
         if (now < time_crashed_ + 4min || !boot_completed) {
             if (++crash_count_ > 4) {
@@ -387,8 +325,8 @@
                     LOG(ERROR) << "updatable process '" << name_ << "' exited 4 times "
                                << (boot_completed ? "in 4 minutes" : "before boot completed");
                     // Notifies update_verifier and apexd
-                    property_set("ro.init.updatable_crashing_process_name", name_);
-                    property_set("ro.init.updatable_crashing", "1");
+                    SetProperty("sys.init.updatable_crashing_process_name", name_);
+                    SetProperty("sys.init.updatable_crashing", "1");
                 }
             }
         } else {
@@ -411,457 +349,22 @@
     LOG(INFO) << "service " << name_;
     LOG(INFO) << "  class '" << Join(classnames_, " ") << "'";
     LOG(INFO) << "  exec " << Join(args_, " ");
-    std::for_each(descriptors_.begin(), descriptors_.end(),
-                  [] (const auto& info) { LOG(INFO) << *info; });
+    for (const auto& socket : sockets_) {
+        LOG(INFO) << "  socket " << socket.name;
+    }
+    for (const auto& file : files_) {
+        LOG(INFO) << "  file " << file.name;
+    }
 }
 
-Result<Success> Service::ParseCapabilities(std::vector<std::string>&& args) {
-    capabilities_ = 0;
 
-    if (!CapAmbientSupported()) {
-        return Error()
-               << "capabilities requested but the kernel does not support ambient capabilities";
-    }
-
-    unsigned int last_valid_cap = GetLastValidCap();
-    if (last_valid_cap >= capabilities_->size()) {
-        LOG(WARNING) << "last valid run-time capability is larger than CAP_LAST_CAP";
-    }
-
-    for (size_t i = 1; i < args.size(); i++) {
-        const std::string& arg = args[i];
-        int res = LookupCap(arg);
-        if (res < 0) {
-            return Error() << StringPrintf("invalid capability '%s'", arg.c_str());
+Result<void> Service::ExecStart() {
+    auto reboot_on_failure = make_scope_guard([this] {
+        if (on_failure_reboot_target_) {
+            trigger_shutdown(*on_failure_reboot_target_);
         }
-        unsigned int cap = static_cast<unsigned int>(res);  // |res| is >= 0.
-        if (cap > last_valid_cap) {
-            return Error() << StringPrintf("capability '%s' not supported by the kernel",
-                                           arg.c_str());
-        }
-        (*capabilities_)[cap] = true;
-    }
-    return Success();
-}
+    });
 
-Result<Success> Service::ParseClass(std::vector<std::string>&& args) {
-    classnames_ = std::set<std::string>(args.begin() + 1, args.end());
-    return Success();
-}
-
-Result<Success> Service::ParseConsole(std::vector<std::string>&& args) {
-    flags_ |= SVC_CONSOLE;
-    console_ = args.size() > 1 ? "/dev/" + args[1] : "";
-    return Success();
-}
-
-Result<Success> Service::ParseCritical(std::vector<std::string>&& args) {
-    flags_ |= SVC_CRITICAL;
-    return Success();
-}
-
-Result<Success> Service::ParseDisabled(std::vector<std::string>&& args) {
-    flags_ |= SVC_DISABLED;
-    flags_ |= SVC_RC_DISABLED;
-    return Success();
-}
-
-Result<Success> Service::ParseEnterNamespace(std::vector<std::string>&& args) {
-    if (args[1] != "net") {
-        return Error() << "Init only supports entering network namespaces";
-    }
-    if (!namespaces_to_enter_.empty()) {
-        return Error() << "Only one network namespace may be entered";
-    }
-    // Network namespaces require that /sys is remounted, otherwise the old adapters will still be
-    // present. Therefore, they also require mount namespaces.
-    namespace_flags_ |= CLONE_NEWNS;
-    namespaces_to_enter_.emplace_back(CLONE_NEWNET, std::move(args[2]));
-    return Success();
-}
-
-Result<Success> Service::ParseGroup(std::vector<std::string>&& args) {
-    auto gid = DecodeUid(args[1]);
-    if (!gid) {
-        return Error() << "Unable to decode GID for '" << args[1] << "': " << gid.error();
-    }
-    gid_ = *gid;
-
-    for (std::size_t n = 2; n < args.size(); n++) {
-        gid = DecodeUid(args[n]);
-        if (!gid) {
-            return Error() << "Unable to decode GID for '" << args[n] << "': " << gid.error();
-        }
-        supp_gids_.emplace_back(*gid);
-    }
-    return Success();
-}
-
-Result<Success> Service::ParsePriority(std::vector<std::string>&& args) {
-    priority_ = 0;
-    if (!ParseInt(args[1], &priority_,
-                  static_cast<int>(ANDROID_PRIORITY_HIGHEST), // highest is negative
-                  static_cast<int>(ANDROID_PRIORITY_LOWEST))) {
-        return Error() << StringPrintf("process priority value must be range %d - %d",
-                                       ANDROID_PRIORITY_HIGHEST, ANDROID_PRIORITY_LOWEST);
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseInterface(std::vector<std::string>&& args) {
-    const std::string& interface_name = args[1];
-    const std::string& instance_name = args[2];
-
-    FQName fq_name;
-    if (!FQName::parse(interface_name, &fq_name)) {
-        return Error() << "Invalid fully-qualified name for interface '" << interface_name << "'";
-    }
-
-    if (!fq_name.isFullyQualified()) {
-        return Error() << "Interface name not fully-qualified '" << interface_name << "'";
-    }
-
-    if (fq_name.isValidValueName()) {
-        return Error() << "Interface name must not be a value name '" << interface_name << "'";
-    }
-
-    const std::string fullname = interface_name + "/" + instance_name;
-
-    for (const auto& svc : ServiceList::GetInstance()) {
-        if (svc->interfaces().count(fullname) > 0) {
-            return Error() << "Interface '" << fullname << "' redefined in " << name()
-                           << " but is already defined by " << svc->name();
-        }
-    }
-
-    interfaces_.insert(fullname);
-
-    return Success();
-}
-
-Result<Success> Service::ParseIoprio(std::vector<std::string>&& args) {
-    if (!ParseInt(args[2], &ioprio_pri_, 0, 7)) {
-        return Error() << "priority value must be range 0 - 7";
-    }
-
-    if (args[1] == "rt") {
-        ioprio_class_ = IoSchedClass_RT;
-    } else if (args[1] == "be") {
-        ioprio_class_ = IoSchedClass_BE;
-    } else if (args[1] == "idle") {
-        ioprio_class_ = IoSchedClass_IDLE;
-    } else {
-        return Error() << "ioprio option usage: ioprio <rt|be|idle> <0-7>";
-    }
-
-    return Success();
-}
-
-Result<Success> Service::ParseKeycodes(std::vector<std::string>&& args) {
-    auto it = args.begin() + 1;
-    if (args.size() == 2 && StartsWith(args[1], "$")) {
-        std::string expanded;
-        if (!expand_props(args[1], &expanded)) {
-            return Error() << "Could not expand property '" << args[1] << "'";
-        }
-
-        // If the property is not set, it defaults to none, in which case there are no keycodes
-        // for this service.
-        if (expanded == "none") {
-            return Success();
-        }
-
-        args = Split(expanded, ",");
-        it = args.begin();
-    }
-
-    for (; it != args.end(); ++it) {
-        int code;
-        if (ParseInt(*it, &code, 0, KEY_MAX)) {
-            for (auto& key : keycodes_) {
-                if (key == code) return Error() << "duplicate keycode: " << *it;
-            }
-            keycodes_.insert(std::upper_bound(keycodes_.begin(), keycodes_.end(), code), code);
-        } else {
-            return Error() << "invalid keycode: " << *it;
-        }
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseOneshot(std::vector<std::string>&& args) {
-    flags_ |= SVC_ONESHOT;
-    return Success();
-}
-
-Result<Success> Service::ParseOnrestart(std::vector<std::string>&& args) {
-    args.erase(args.begin());
-    int line = onrestart_.NumCommands() + 1;
-    if (auto result = onrestart_.AddCommand(std::move(args), line); !result) {
-        return Error() << "cannot add Onrestart command: " << result.error();
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseNamespace(std::vector<std::string>&& args) {
-    for (size_t i = 1; i < args.size(); i++) {
-        if (args[i] == "pid") {
-            namespace_flags_ |= CLONE_NEWPID;
-            // PID namespaces require mount namespaces.
-            namespace_flags_ |= CLONE_NEWNS;
-        } else if (args[i] == "mnt") {
-            namespace_flags_ |= CLONE_NEWNS;
-        } else {
-            return Error() << "namespace must be 'pid' or 'mnt'";
-        }
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseOomScoreAdjust(std::vector<std::string>&& args) {
-    if (!ParseInt(args[1], &oom_score_adjust_, -1000, 1000)) {
-        return Error() << "oom_score_adjust value must be in range -1000 - +1000";
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseOverride(std::vector<std::string>&& args) {
-    override_ = true;
-    return Success();
-}
-
-Result<Success> Service::ParseMemcgSwappiness(std::vector<std::string>&& args) {
-    if (!ParseInt(args[1], &swappiness_, 0)) {
-        return Error() << "swappiness value must be equal or greater than 0";
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseMemcgLimitInBytes(std::vector<std::string>&& args) {
-    if (!ParseInt(args[1], &limit_in_bytes_, 0)) {
-        return Error() << "limit_in_bytes value must be equal or greater than 0";
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseMemcgLimitPercent(std::vector<std::string>&& args) {
-    if (!ParseInt(args[1], &limit_percent_, 0)) {
-        return Error() << "limit_percent value must be equal or greater than 0";
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseMemcgLimitProperty(std::vector<std::string>&& args) {
-    limit_property_ = std::move(args[1]);
-    return Success();
-}
-
-Result<Success> Service::ParseMemcgSoftLimitInBytes(std::vector<std::string>&& args) {
-    if (!ParseInt(args[1], &soft_limit_in_bytes_, 0)) {
-        return Error() << "soft_limit_in_bytes value must be equal or greater than 0";
-    }
-    return Success();
-}
-
-Result<Success> Service::ParseProcessRlimit(std::vector<std::string>&& args) {
-    auto rlimit = ParseRlimit(args);
-    if (!rlimit) return rlimit.error();
-
-    rlimits_.emplace_back(*rlimit);
-    return Success();
-}
-
-Result<Success> Service::ParseRestartPeriod(std::vector<std::string>&& args) {
-    int period;
-    if (!ParseInt(args[1], &period, 5)) {
-        return Error() << "restart_period value must be an integer >= 5";
-    }
-    restart_period_ = std::chrono::seconds(period);
-    return Success();
-}
-
-Result<Success> Service::ParseSeclabel(std::vector<std::string>&& args) {
-    seclabel_ = std::move(args[1]);
-    return Success();
-}
-
-Result<Success> Service::ParseSigstop(std::vector<std::string>&& args) {
-    sigstop_ = true;
-    return Success();
-}
-
-Result<Success> Service::ParseSetenv(std::vector<std::string>&& args) {
-    environment_vars_.emplace_back(std::move(args[1]), std::move(args[2]));
-    return Success();
-}
-
-Result<Success> Service::ParseShutdown(std::vector<std::string>&& args) {
-    if (args[1] == "critical") {
-        flags_ |= SVC_SHUTDOWN_CRITICAL;
-        return Success();
-    }
-    return Error() << "Invalid shutdown option";
-}
-
-Result<Success> Service::ParseTimeoutPeriod(std::vector<std::string>&& args) {
-    int period;
-    if (!ParseInt(args[1], &period, 1)) {
-        return Error() << "timeout_period value must be an integer >= 1";
-    }
-    timeout_period_ = std::chrono::seconds(period);
-    return Success();
-}
-
-template <typename T>
-Result<Success> Service::AddDescriptor(std::vector<std::string>&& args) {
-    int perm = args.size() > 3 ? std::strtoul(args[3].c_str(), 0, 8) : -1;
-    Result<uid_t> uid = 0;
-    Result<gid_t> gid = 0;
-    std::string context = args.size() > 6 ? args[6] : "";
-
-    if (args.size() > 4) {
-        uid = DecodeUid(args[4]);
-        if (!uid) {
-            return Error() << "Unable to find UID for '" << args[4] << "': " << uid.error();
-        }
-    }
-
-    if (args.size() > 5) {
-        gid = DecodeUid(args[5]);
-        if (!gid) {
-            return Error() << "Unable to find GID for '" << args[5] << "': " << gid.error();
-        }
-    }
-
-    auto descriptor = std::make_unique<T>(args[1], args[2], *uid, *gid, perm, context);
-
-    auto old =
-        std::find_if(descriptors_.begin(), descriptors_.end(),
-                     [&descriptor] (const auto& other) { return descriptor.get() == other.get(); });
-
-    if (old != descriptors_.end()) {
-        return Error() << "duplicate descriptor " << args[1] << " " << args[2];
-    }
-
-    descriptors_.emplace_back(std::move(descriptor));
-    return Success();
-}
-
-// name type perm [ uid gid context ]
-Result<Success> Service::ParseSocket(std::vector<std::string>&& args) {
-    if (!StartsWith(args[2], "dgram") && !StartsWith(args[2], "stream") &&
-        !StartsWith(args[2], "seqpacket")) {
-        return Error() << "socket type must be 'dgram', 'stream' or 'seqpacket'";
-    }
-    return AddDescriptor<SocketInfo>(std::move(args));
-}
-
-// name type perm [ uid gid context ]
-Result<Success> Service::ParseFile(std::vector<std::string>&& args) {
-    if (args[2] != "r" && args[2] != "w" && args[2] != "rw") {
-        return Error() << "file type must be 'r', 'w' or 'rw'";
-    }
-    std::string expanded;
-    if (!expand_props(args[1], &expanded)) {
-        return Error() << "Could not expand property in file path '" << args[1] << "'";
-    }
-    args[1] = std::move(expanded);
-    if ((args[1][0] != '/') || (args[1].find("../") != std::string::npos)) {
-        return Error() << "file name must not be relative";
-    }
-    return AddDescriptor<FileInfo>(std::move(args));
-}
-
-Result<Success> Service::ParseUser(std::vector<std::string>&& args) {
-    auto uid = DecodeUid(args[1]);
-    if (!uid) {
-        return Error() << "Unable to find UID for '" << args[1] << "': " << uid.error();
-    }
-    uid_ = *uid;
-    return Success();
-}
-
-Result<Success> Service::ParseWritepid(std::vector<std::string>&& args) {
-    args.erase(args.begin());
-    writepid_files_ = std::move(args);
-    return Success();
-}
-
-Result<Success> Service::ParseUpdatable(std::vector<std::string>&& args) {
-    updatable_ = true;
-    return Success();
-}
-
-class Service::OptionParserMap : public KeywordMap<OptionParser> {
-  public:
-    OptionParserMap() {}
-
-  private:
-    const Map& map() const override;
-};
-
-const Service::OptionParserMap::Map& Service::OptionParserMap::map() const {
-    constexpr std::size_t kMax = std::numeric_limits<std::size_t>::max();
-    // clang-format off
-    static const Map option_parsers = {
-        {"capabilities",
-                        {0,     kMax, &Service::ParseCapabilities}},
-        {"class",       {1,     kMax, &Service::ParseClass}},
-        {"console",     {0,     1,    &Service::ParseConsole}},
-        {"critical",    {0,     0,    &Service::ParseCritical}},
-        {"disabled",    {0,     0,    &Service::ParseDisabled}},
-        {"enter_namespace",
-                        {2,     2,    &Service::ParseEnterNamespace}},
-        {"file",        {2,     2,    &Service::ParseFile}},
-        {"group",       {1,     NR_SVC_SUPP_GIDS + 1, &Service::ParseGroup}},
-        {"interface",   {2,     2,    &Service::ParseInterface}},
-        {"ioprio",      {2,     2,    &Service::ParseIoprio}},
-        {"keycodes",    {1,     kMax, &Service::ParseKeycodes}},
-        {"memcg.limit_in_bytes",
-                        {1,     1,    &Service::ParseMemcgLimitInBytes}},
-        {"memcg.limit_percent",
-                        {1,     1,    &Service::ParseMemcgLimitPercent}},
-        {"memcg.limit_property",
-                        {1,     1,    &Service::ParseMemcgLimitProperty}},
-        {"memcg.soft_limit_in_bytes",
-                        {1,     1,    &Service::ParseMemcgSoftLimitInBytes}},
-        {"memcg.swappiness",
-                        {1,     1,    &Service::ParseMemcgSwappiness}},
-        {"namespace",   {1,     2,    &Service::ParseNamespace}},
-        {"oneshot",     {0,     0,    &Service::ParseOneshot}},
-        {"onrestart",   {1,     kMax, &Service::ParseOnrestart}},
-        {"oom_score_adjust",
-                        {1,     1,    &Service::ParseOomScoreAdjust}},
-        {"override",    {0,     0,    &Service::ParseOverride}},
-        {"priority",    {1,     1,    &Service::ParsePriority}},
-        {"restart_period",
-                        {1,     1,    &Service::ParseRestartPeriod}},
-        {"rlimit",      {3,     3,    &Service::ParseProcessRlimit}},
-        {"seclabel",    {1,     1,    &Service::ParseSeclabel}},
-        {"setenv",      {2,     2,    &Service::ParseSetenv}},
-        {"shutdown",    {1,     1,    &Service::ParseShutdown}},
-        {"sigstop",     {0,     0,    &Service::ParseSigstop}},
-        {"socket",      {3,     6,    &Service::ParseSocket}},
-        {"timeout_period",
-                        {1,     1,    &Service::ParseTimeoutPeriod}},
-        {"updatable",   {0,     0,    &Service::ParseUpdatable}},
-        {"user",        {1,     1,    &Service::ParseUser}},
-        {"writepid",    {1,     kMax, &Service::ParseWritepid}},
-    };
-    // clang-format on
-    return option_parsers;
-}
-
-Result<Success> Service::ParseLine(std::vector<std::string>&& args) {
-    static const OptionParserMap parser_map;
-    auto parser = parser_map.FindFunction(args);
-
-    if (!parser) return parser.error();
-
-    return std::invoke(*parser, this, std::move(args));
-}
-
-Result<Success> Service::ExecStart() {
     if (is_updatable() && !ServiceList::GetInstance().IsServicesUpdated()) {
         // Don't delay the service for ExecStart() as the semantic is that
         // the caller might depend on the side effect of the execution.
@@ -871,21 +374,28 @@
 
     flags_ |= SVC_ONESHOT;
 
-    if (auto result = Start(); !result) {
+    if (auto result = Start(); !result.ok()) {
         return result;
     }
 
     flags_ |= SVC_EXEC;
     is_exec_service_running_ = true;
 
-    LOG(INFO) << "SVC_EXEC service '" << name_ << "' pid " << pid_ << " (uid " << uid_ << " gid "
-              << gid_ << "+" << supp_gids_.size() << " context "
+    LOG(INFO) << "SVC_EXEC service '" << name_ << "' pid " << pid_ << " (uid " << proc_attr_.uid
+              << " gid " << proc_attr_.gid << "+" << proc_attr_.supp_gids.size() << " context "
               << (!seclabel_.empty() ? seclabel_ : "default") << ") started; waiting...";
 
-    return Success();
+    reboot_on_failure.Disable();
+    return {};
 }
 
-Result<Success> Service::Start() {
+Result<void> Service::Start() {
+    auto reboot_on_failure = make_scope_guard([this] {
+        if (on_failure_reboot_target_) {
+            trigger_shutdown(*on_failure_reboot_target_);
+        }
+    });
+
     if (is_updatable() && !ServiceList::GetInstance().IsServicesUpdated()) {
         ServiceList::GetInstance().DelayService(*this);
         return Error() << "Cannot start an updatable service '" << name_
@@ -908,21 +418,22 @@
             flags_ |= SVC_RESTART;
         }
         // It is not an error to try to start a service that is already running.
-        return Success();
+        reboot_on_failure.Disable();
+        return {};
     }
 
     bool needs_console = (flags_ & SVC_CONSOLE);
     if (needs_console) {
-        if (console_.empty()) {
-            console_ = default_console;
+        if (proc_attr_.console.empty()) {
+            proc_attr_.console = "/dev/" + GetProperty("ro.boot.console", "console");
         }
 
         // Make sure that open call succeeds to ensure a console driver is
         // properly registered for the device node
-        int console_fd = open(console_.c_str(), O_RDWR | O_CLOEXEC);
+        int console_fd = open(proc_attr_.console.c_str(), O_RDWR | O_CLOEXEC);
         if (console_fd < 0) {
             flags_ |= SVC_DISABLED;
-            return ErrnoError() << "Couldn't open console '" << console_ << "'";
+            return ErrnoError() << "Couldn't open console '" << proc_attr_.console << "'";
         }
         close(console_fd);
     }
@@ -938,17 +449,17 @@
         scon = seclabel_;
     } else {
         auto result = ComputeContextFromExecutable(args_[0]);
-        if (!result) {
+        if (!result.ok()) {
             return result.error();
         }
         scon = *result;
     }
 
-    if (!IsRuntimeApexReady() && !pre_apexd_) {
-        // If this service is started before the runtime APEX gets available,
-        // mark it as pre-apexd one. Note that this marking is permanent. So
-        // for example, if the service is re-launched (e.g., due to crash),
-        // it is still recognized as pre-apexd... for consistency.
+    if (!AreRuntimeApexesReady() && !pre_apexd_) {
+        // If this service is started before the Runtime and ART APEXes get
+        // available, mark it as pre-apexd one. Note that this marking is
+        // permanent. So for example, if the service is re-launched (e.g., due
+        // to crash), it is still recognized as pre-apexd... for consistency.
         pre_apexd_ = true;
     }
 
@@ -956,9 +467,26 @@
 
     LOG(INFO) << "starting service '" << name_ << "'...";
 
+    std::vector<Descriptor> descriptors;
+    for (const auto& socket : sockets_) {
+        if (auto result = socket.Create(scon); result.ok()) {
+            descriptors.emplace_back(std::move(*result));
+        } else {
+            LOG(INFO) << "Could not create socket '" << socket.name << "': " << result.error();
+        }
+    }
+
+    for (const auto& file : files_) {
+        if (auto result = file.Create(); result.ok()) {
+            descriptors.emplace_back(std::move(*result));
+        } else {
+            LOG(INFO) << "Could not open file '" << file.name << "': " << result.error();
+        }
+    }
+
     pid_t pid = -1;
-    if (namespace_flags_) {
-        pid = clone(nullptr, nullptr, namespace_flags_ | SIGCHLD, nullptr);
+    if (namespaces_.flags) {
+        pid = clone(nullptr, nullptr, namespaces_.flags | SIGCHLD, nullptr);
     } else {
         pid = fork();
     }
@@ -966,97 +494,34 @@
     if (pid == 0) {
         umask(077);
 
-        if (auto result = EnterNamespaces(); !result) {
-            LOG(FATAL) << "Service '" << name_ << "' could not enter namespaces: " << result.error();
-        }
-
-#if defined(__ANDROID__)
-        if (pre_apexd_) {
-            if (!SwitchToBootstrapMountNamespaceIfNeeded()) {
-                LOG(FATAL) << "Service '" << name_ << "' could not enter "
-                           << "into the bootstrap mount namespace";
-            }
-        }
-#endif
-
-        if (namespace_flags_ & CLONE_NEWNS) {
-            if (auto result = SetUpMountNamespace(); !result) {
-                LOG(FATAL) << "Service '" << name_
-                           << "' could not set up mount namespace: " << result.error();
-            }
-        }
-
-        if (namespace_flags_ & CLONE_NEWPID) {
-            // This will fork again to run an init process inside the PID
-            // namespace.
-            if (auto result = SetUpPidNamespace(); !result) {
-                LOG(FATAL) << "Service '" << name_
-                           << "' could not set up PID namespace: " << result.error();
-            }
+        if (auto result = EnterNamespaces(namespaces_, name_, pre_apexd_); !result.ok()) {
+            LOG(FATAL) << "Service '" << name_
+                       << "' failed to set up namespaces: " << result.error();
         }
 
         for (const auto& [key, value] : environment_vars_) {
             setenv(key.c_str(), value.c_str(), 1);
         }
 
-        std::for_each(descriptors_.begin(), descriptors_.end(),
-                      std::bind(&DescriptorInfo::CreateAndPublish, std::placeholders::_1, scon));
-
-        // See if there were "writepid" instructions to write to files under cpuset path.
-        std::string cpuset_path;
-        if (CgroupGetControllerPath("cpuset", &cpuset_path)) {
-            auto cpuset_predicate = [&cpuset_path](const std::string& path) {
-                return StartsWith(path, cpuset_path + "/");
-            };
-            auto iter =
-                    std::find_if(writepid_files_.begin(), writepid_files_.end(), cpuset_predicate);
-            if (iter == writepid_files_.end()) {
-                // There were no "writepid" instructions for cpusets, check if the system default
-                // cpuset is specified to be used for the process.
-                std::string default_cpuset = GetProperty("ro.cpuset.default", "");
-                if (!default_cpuset.empty()) {
-                    // Make sure the cpuset name starts and ends with '/'.
-                    // A single '/' means the 'root' cpuset.
-                    if (default_cpuset.front() != '/') {
-                        default_cpuset.insert(0, 1, '/');
-                    }
-                    if (default_cpuset.back() != '/') {
-                        default_cpuset.push_back('/');
-                    }
-                    writepid_files_.push_back(
-                            StringPrintf("%s%stasks", cpuset_path.c_str(), default_cpuset.c_str()));
-                }
-            }
-        } else {
-            LOG(ERROR) << "cpuset cgroup controller is not mounted!";
-        }
-        std::string pid_str = std::to_string(getpid());
-        for (const auto& file : writepid_files_) {
-            if (!WriteStringToFile(pid_str, file)) {
-                PLOG(ERROR) << "couldn't write " << pid_str << " to " << file;
-            }
+        for (const auto& descriptor : descriptors) {
+            descriptor.Publish();
         }
 
-        if (ioprio_class_ != IoSchedClass_NONE) {
-            if (android_set_ioprio(getpid(), ioprio_class_, ioprio_pri_)) {
-                PLOG(ERROR) << "failed to set pid " << getpid()
-                            << " ioprio=" << ioprio_class_ << "," << ioprio_pri_;
-            }
+        if (auto result = WritePidToFiles(&writepid_files_); !result.ok()) {
+            LOG(ERROR) << "failed to write pid to files: " << result.error();
         }
 
-        if (needs_console) {
-            setsid();
-            OpenConsole();
-        } else {
-            ZapStdio();
+        if (task_profiles_.size() > 0 && !SetTaskProfiles(getpid(), task_profiles_)) {
+            LOG(ERROR) << "failed to set task profiles";
         }
 
         // As requested, set our gid, supplemental gids, uid, context, and
         // priority. Aborts on failure.
-        SetProcessAttributes();
+        SetProcessAttributesAndCaps();
 
         if (!ExpandArgsAndExecv(args_, sigstop_)) {
-            PLOG(ERROR) << "cannot execve('" << args_[0] << "')";
+            PLOG(ERROR) << "cannot execv('" << args_[0]
+                        << "'). See the 'Debugging init' section of init's README.md for tips";
         }
 
         _exit(127);
@@ -1067,7 +532,7 @@
         return ErrnoError() << "Failed to fork";
     }
 
-    if (oom_score_adjust_ != -1000) {
+    if (oom_score_adjust_ != DEFAULT_OOM_SCORE_ADJUST) {
         std::string oom_str = std::to_string(oom_score_adjust_);
         std::string oom_file = StringPrintf("/proc/%d/oom_score_adj", pid);
         if (!WriteStringToFile(oom_str, oom_file)) {
@@ -1083,19 +548,19 @@
 
     bool use_memcg = swappiness_ != -1 || soft_limit_in_bytes_ != -1 || limit_in_bytes_ != -1 ||
                       limit_percent_ != -1 || !limit_property_.empty();
-    errno = -createProcessGroup(uid_, pid_, use_memcg);
+    errno = -createProcessGroup(proc_attr_.uid, pid_, use_memcg);
     if (errno != 0) {
-        PLOG(ERROR) << "createProcessGroup(" << uid_ << ", " << pid_ << ") failed for service '"
-                    << name_ << "'";
+        PLOG(ERROR) << "createProcessGroup(" << proc_attr_.uid << ", " << pid_
+                    << ") failed for service '" << name_ << "'";
     } else if (use_memcg) {
         if (swappiness_ != -1) {
-            if (!setProcessGroupSwappiness(uid_, pid_, swappiness_)) {
+            if (!setProcessGroupSwappiness(proc_attr_.uid, pid_, swappiness_)) {
                 PLOG(ERROR) << "setProcessGroupSwappiness failed";
             }
         }
 
         if (soft_limit_in_bytes_ != -1) {
-            if (!setProcessGroupSoftLimit(uid_, pid_, soft_limit_in_bytes_)) {
+            if (!setProcessGroupSoftLimit(proc_attr_.uid, pid_, soft_limit_in_bytes_)) {
                 PLOG(ERROR) << "setProcessGroupSoftLimit failed";
             }
         }
@@ -1122,31 +587,36 @@
         }
 
         if (computed_limit_in_bytes != size_t(-1)) {
-            if (!setProcessGroupLimit(uid_, pid_, computed_limit_in_bytes)) {
+            if (!setProcessGroupLimit(proc_attr_.uid, pid_, computed_limit_in_bytes)) {
                 PLOG(ERROR) << "setProcessGroupLimit failed";
             }
         }
     }
 
+    if (oom_score_adjust_ != DEFAULT_OOM_SCORE_ADJUST) {
+        LmkdRegister(name_, proc_attr_.uid, pid_, oom_score_adjust_);
+    }
+
     NotifyStateChange("running");
-    return Success();
+    reboot_on_failure.Disable();
+    return {};
 }
 
-Result<Success> Service::StartIfNotDisabled() {
+Result<void> Service::StartIfNotDisabled() {
     if (!(flags_ & SVC_DISABLED)) {
         return Start();
     } else {
         flags_ |= SVC_DISABLED_START;
     }
-    return Success();
+    return {};
 }
 
-Result<Success> Service::Enable() {
+Result<void> Service::Enable() {
     flags_ &= ~(SVC_DISABLED | SVC_RC_DISABLED);
     if (flags_ & SVC_DISABLED_START) {
         return Start();
     }
-    return Success();
+    return {};
 }
 
 void Service::Reset() {
@@ -1162,14 +632,14 @@
     }
 }
 
-Result<Success> Service::StartIfPostData() {
+Result<void> Service::StartIfPostData() {
     // Start the service, but only if it was started after /data was mounted,
     // and it was still running when we reset the post-data services.
     if (running_at_post_data_reset_) {
         return Start();
     }
 
-    return Success();
+    return {};
 }
 
 void Service::Stop() {
@@ -1203,7 +673,7 @@
         StopOrReset(SVC_RESTART);
     } else if (!(flags_ & SVC_RESTARTING)) {
         /* Just start the service since it's not running. */
-        if (auto result = Start(); !result) {
+        if (auto result = Start(); !result.ok()) {
             LOG(ERROR) << "Could not restart '" << name_ << "': " << result.error();
         }
     } /* else: Service is restarting anyways. */
@@ -1242,37 +712,8 @@
     }
 }
 
-void Service::ZapStdio() const {
-    int fd;
-    fd = open("/dev/null", O_RDWR);
-    dup2(fd, 0);
-    dup2(fd, 1);
-    dup2(fd, 2);
-    close(fd);
-}
-
-void Service::OpenConsole() const {
-    int fd = open(console_.c_str(), O_RDWR);
-    if (fd == -1) fd = open("/dev/null", O_RDWR);
-    ioctl(fd, TIOCSCTTY, 0);
-    dup2(fd, 0);
-    dup2(fd, 1);
-    dup2(fd, 2);
-    close(fd);
-}
-
-ServiceList::ServiceList() {}
-
-ServiceList& ServiceList::GetInstance() {
-    static ServiceList instance;
-    return instance;
-}
-
-void ServiceList::AddService(std::unique_ptr<Service> service) {
-    services_.emplace_back(std::move(service));
-}
-
-std::unique_ptr<Service> Service::MakeTemporaryOneshotService(const std::vector<std::string>& args) {
+Result<std::unique_ptr<Service>> Service::MakeTemporaryOneshotService(
+        const std::vector<std::string>& args) {
     // Parse the arguments: exec [SECLABEL [UID [GID]*] --] COMMAND ARGS...
     // SECLABEL can be a - to denote default
     std::size_t command_arg = 1;
@@ -1283,13 +724,11 @@
         }
     }
     if (command_arg > 4 + NR_SVC_SUPP_GIDS) {
-        LOG(ERROR) << "exec called with too many supplementary group ids";
-        return nullptr;
+        return Error() << "exec called with too many supplementary group ids";
     }
 
     if (command_arg >= args.size()) {
-        LOG(ERROR) << "exec called without command";
-        return nullptr;
+        return Error() << "exec called without command";
     }
     std::vector<std::string> str_args(args.begin() + command_arg, args.end());
 
@@ -1307,167 +746,30 @@
     Result<uid_t> uid = 0;
     if (command_arg > 3) {
         uid = DecodeUid(args[2]);
-        if (!uid) {
-            LOG(ERROR) << "Unable to decode UID for '" << args[2] << "': " << uid.error();
-            return nullptr;
+        if (!uid.ok()) {
+            return Error() << "Unable to decode UID for '" << args[2] << "': " << uid.error();
         }
     }
     Result<gid_t> gid = 0;
     std::vector<gid_t> supp_gids;
     if (command_arg > 4) {
         gid = DecodeUid(args[3]);
-        if (!gid) {
-            LOG(ERROR) << "Unable to decode GID for '" << args[3] << "': " << gid.error();
-            return nullptr;
+        if (!gid.ok()) {
+            return Error() << "Unable to decode GID for '" << args[3] << "': " << gid.error();
         }
         std::size_t nr_supp_gids = command_arg - 1 /* -- */ - 4 /* exec SECLABEL UID GID */;
         for (size_t i = 0; i < nr_supp_gids; ++i) {
             auto supp_gid = DecodeUid(args[4 + i]);
-            if (!supp_gid) {
-                LOG(ERROR) << "Unable to decode GID for '" << args[4 + i]
-                           << "': " << supp_gid.error();
-                return nullptr;
+            if (!supp_gid.ok()) {
+                return Error() << "Unable to decode GID for '" << args[4 + i]
+                               << "': " << supp_gid.error();
             }
             supp_gids.push_back(*supp_gid);
         }
     }
 
     return std::make_unique<Service>(name, flags, *uid, *gid, supp_gids, namespace_flags, seclabel,
-                                     nullptr, str_args);
-}
-
-// Shutdown services in the opposite order that they were started.
-const std::vector<Service*> ServiceList::services_in_shutdown_order() const {
-    std::vector<Service*> shutdown_services;
-    for (const auto& service : services_) {
-        if (service->start_order() > 0) shutdown_services.emplace_back(service.get());
-    }
-    std::sort(shutdown_services.begin(), shutdown_services.end(),
-              [](const auto& a, const auto& b) { return a->start_order() > b->start_order(); });
-    return shutdown_services;
-}
-
-void ServiceList::RemoveService(const Service& svc) {
-    auto svc_it = std::find_if(services_.begin(), services_.end(),
-                               [&svc] (const std::unique_ptr<Service>& s) {
-                                   return svc.name() == s->name();
-                               });
-    if (svc_it == services_.end()) {
-        return;
-    }
-
-    services_.erase(svc_it);
-}
-
-void ServiceList::DumpState() const {
-    for (const auto& s : services_) {
-        s->DumpState();
-    }
-}
-
-void ServiceList::MarkPostData() {
-    post_data_ = true;
-}
-
-bool ServiceList::IsPostData() {
-    return post_data_;
-}
-
-void ServiceList::MarkServicesUpdate() {
-    services_update_finished_ = true;
-
-    // start the delayed services
-    for (const auto& name : delayed_service_names_) {
-        Service* service = FindService(name);
-        if (service == nullptr) {
-            LOG(ERROR) << "delayed service '" << name << "' could not be found.";
-            continue;
-        }
-        if (auto result = service->Start(); !result) {
-            LOG(ERROR) << result.error_string();
-        }
-    }
-    delayed_service_names_.clear();
-}
-
-void ServiceList::DelayService(const Service& service) {
-    if (services_update_finished_) {
-        LOG(ERROR) << "Cannot delay the start of service '" << service.name()
-                   << "' because all services are already updated. Ignoring.";
-        return;
-    }
-    delayed_service_names_.emplace_back(service.name());
-}
-
-Result<Success> ServiceParser::ParseSection(std::vector<std::string>&& args,
-                                            const std::string& filename, int line) {
-    if (args.size() < 3) {
-        return Error() << "services must have a name and a program";
-    }
-
-    const std::string& name = args[1];
-    if (!IsValidName(name)) {
-        return Error() << "invalid service name '" << name << "'";
-    }
-
-    filename_ = filename;
-
-    Subcontext* restart_action_subcontext = nullptr;
-    if (subcontexts_) {
-        for (auto& subcontext : *subcontexts_) {
-            if (StartsWith(filename, subcontext.path_prefix())) {
-                restart_action_subcontext = &subcontext;
-                break;
-            }
-        }
-    }
-
-    std::vector<std::string> str_args(args.begin() + 2, args.end());
-
-    if (SelinuxGetVendorAndroidVersion() <= __ANDROID_API_P__) {
-        if (str_args[0] == "/sbin/watchdogd") {
-            str_args[0] = "/system/bin/watchdogd";
-        }
-    }
-
-    service_ = std::make_unique<Service>(name, restart_action_subcontext, str_args);
-    return Success();
-}
-
-Result<Success> ServiceParser::ParseLineSection(std::vector<std::string>&& args, int line) {
-    return service_ ? service_->ParseLine(std::move(args)) : Success();
-}
-
-Result<Success> ServiceParser::EndSection() {
-    if (service_) {
-        Service* old_service = service_list_->FindService(service_->name());
-        if (old_service) {
-            if (!service_->is_override()) {
-                return Error() << "ignored duplicate definition of service '" << service_->name()
-                               << "'";
-            }
-
-            if (StartsWith(filename_, "/apex/") && !old_service->is_updatable()) {
-                return Error() << "cannot update a non-updatable service '" << service_->name()
-                               << "' with a config in APEX";
-            }
-
-            service_list_->RemoveService(*old_service);
-            old_service = nullptr;
-        }
-
-        service_list_->AddService(std::move(service_));
-    }
-
-    return Success();
-}
-
-bool ServiceParser::IsValidName(const std::string& name) const {
-    // Property names can be any length, but may only contain certain characters.
-    // Property values can contain any characters, but may only be a certain length.
-    // (The latter restriction is needed because `start` and `stop` work by writing
-    // the service name to the "ctl.start" and "ctl.stop" properties.)
-    return IsLegalPropertyName("init.svc." + name) && name.size() <= PROP_VALUE_MAX;
+                                     nullptr, str_args, false);
 }
 
 }  // namespace init
diff --git a/init/service.h b/init/service.h
index ae29f28..34ed5ef 100644
--- a/init/service.h
+++ b/init/service.h
@@ -14,11 +14,9 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_SERVICE_H
-#define _INIT_SERVICE_H
+#pragma once
 
 #include <signal.h>
-#include <sys/resource.h>
 #include <sys/types.h>
 
 #include <chrono>
@@ -33,9 +31,9 @@
 
 #include "action.h"
 #include "capabilities.h"
-#include "descriptors.h"
 #include "keyword_map.h"
 #include "parser.h"
+#include "service_utils.h"
 #include "subcontext.h"
 
 #define SVC_DISABLED 0x001        // do not autostart with class
@@ -63,24 +61,27 @@
 namespace init {
 
 class Service {
+    friend class ServiceParser;
+
   public:
     Service(const std::string& name, Subcontext* subcontext_for_restart_commands,
-            const std::vector<std::string>& args);
+            const std::vector<std::string>& args, bool from_apex = false);
 
     Service(const std::string& name, unsigned flags, uid_t uid, gid_t gid,
-            const std::vector<gid_t>& supp_gids, unsigned namespace_flags,
-            const std::string& seclabel, Subcontext* subcontext_for_restart_commands,
+            const std::vector<gid_t>& supp_gids, int namespace_flags, const std::string& seclabel,
+            Subcontext* subcontext_for_restart_commands, const std::vector<std::string>& args,
+            bool from_apex = false);
+
+    static Result<std::unique_ptr<Service>> MakeTemporaryOneshotService(
             const std::vector<std::string>& args);
 
-    static std::unique_ptr<Service> MakeTemporaryOneshotService(const std::vector<std::string>& args);
-
     bool IsRunning() { return (flags_ & SVC_RUNNING) != 0; }
-    Result<Success> ParseLine(std::vector<std::string>&& args);
-    Result<Success> ExecStart();
-    Result<Success> Start();
-    Result<Success> StartIfNotDisabled();
-    Result<Success> StartIfPostData();
-    Result<Success> Enable();
+    bool IsEnabled() { return (flags_ & SVC_DISABLED) == 0; }
+    Result<void> ExecStart();
+    Result<void> Start();
+    Result<void> StartIfNotDisabled();
+    Result<void> StartIfPostData();
+    Result<void> Enable();
     void Reset();
     void ResetIfPostData();
     void Stop();
@@ -98,6 +99,7 @@
     void AddReapCallback(std::function<void(const siginfo_t& siginfo)> callback) {
         reap_callbacks_.emplace_back(std::move(callback));
     }
+    size_t CheckAllCommands() const { return onrestart_.CheckAllCommands(); }
 
     static bool is_exec_service_running() { return is_exec_service_running_; }
 
@@ -107,16 +109,16 @@
     pid_t pid() const { return pid_; }
     android::base::boot_clock::time_point time_started() const { return time_started_; }
     int crash_count() const { return crash_count_; }
-    uid_t uid() const { return uid_; }
-    gid_t gid() const { return gid_; }
-    unsigned namespace_flags() const { return namespace_flags_; }
-    const std::vector<gid_t>& supp_gids() const { return supp_gids_; }
+    uid_t uid() const { return proc_attr_.uid; }
+    gid_t gid() const { return proc_attr_.gid; }
+    int namespace_flags() const { return namespaces_.flags; }
+    const std::vector<gid_t>& supp_gids() const { return proc_attr_.supp_gids; }
     const std::string& seclabel() const { return seclabel_; }
     const std::vector<int>& keycodes() const { return keycodes_; }
-    IoSchedClass ioprio_class() const { return ioprio_class_; }
-    int ioprio_pri() const { return ioprio_pri_; }
+    IoSchedClass ioprio_class() const { return proc_attr_.ioprio_class; }
+    int ioprio_pri() const { return proc_attr_.ioprio_pri; }
     const std::set<std::string>& interfaces() const { return interfaces_; }
-    int priority() const { return priority_; }
+    int priority() const { return proc_attr_.priority; }
     int oom_score_adjust() const { return oom_score_adjust_; }
     bool is_override() const { return override_; }
     bool process_cgroup_empty() const { return process_cgroup_empty_; }
@@ -127,64 +129,26 @@
     const std::vector<std::string>& args() const { return args_; }
     bool is_updatable() const { return updatable_; }
     bool is_post_data() const { return post_data_; }
+    bool is_from_apex() const { return from_apex_; }
+    void set_oneshot(bool value) {
+        if (value) {
+            flags_ |= SVC_ONESHOT;
+        } else {
+            flags_ &= ~SVC_ONESHOT;
+        }
+    }
 
   private:
-    using OptionParser = Result<Success> (Service::*)(std::vector<std::string>&& args);
-    class OptionParserMap;
-
-    Result<Success> SetUpMountNamespace() const;
-    Result<Success> SetUpPidNamespace() const;
-    Result<Success> EnterNamespaces() const;
     void NotifyStateChange(const std::string& new_state) const;
     void StopOrReset(int how);
-    void ZapStdio() const;
-    void OpenConsole() const;
-    void KillProcessGroup(int signal);
-    void SetProcessAttributes();
-
-    Result<Success> ParseCapabilities(std::vector<std::string>&& args);
-    Result<Success> ParseClass(std::vector<std::string>&& args);
-    Result<Success> ParseConsole(std::vector<std::string>&& args);
-    Result<Success> ParseCritical(std::vector<std::string>&& args);
-    Result<Success> ParseDisabled(std::vector<std::string>&& args);
-    Result<Success> ParseEnterNamespace(std::vector<std::string>&& args);
-    Result<Success> ParseGroup(std::vector<std::string>&& args);
-    Result<Success> ParsePriority(std::vector<std::string>&& args);
-    Result<Success> ParseInterface(std::vector<std::string>&& args);
-    Result<Success> ParseIoprio(std::vector<std::string>&& args);
-    Result<Success> ParseKeycodes(std::vector<std::string>&& args);
-    Result<Success> ParseOneshot(std::vector<std::string>&& args);
-    Result<Success> ParseOnrestart(std::vector<std::string>&& args);
-    Result<Success> ParseOomScoreAdjust(std::vector<std::string>&& args);
-    Result<Success> ParseOverride(std::vector<std::string>&& args);
-    Result<Success> ParseMemcgLimitInBytes(std::vector<std::string>&& args);
-    Result<Success> ParseMemcgLimitPercent(std::vector<std::string>&& args);
-    Result<Success> ParseMemcgLimitProperty(std::vector<std::string>&& args);
-    Result<Success> ParseMemcgSoftLimitInBytes(std::vector<std::string>&& args);
-    Result<Success> ParseMemcgSwappiness(std::vector<std::string>&& args);
-    Result<Success> ParseNamespace(std::vector<std::string>&& args);
-    Result<Success> ParseProcessRlimit(std::vector<std::string>&& args);
-    Result<Success> ParseRestartPeriod(std::vector<std::string>&& args);
-    Result<Success> ParseSeclabel(std::vector<std::string>&& args);
-    Result<Success> ParseSetenv(std::vector<std::string>&& args);
-    Result<Success> ParseShutdown(std::vector<std::string>&& args);
-    Result<Success> ParseSigstop(std::vector<std::string>&& args);
-    Result<Success> ParseSocket(std::vector<std::string>&& args);
-    Result<Success> ParseTimeoutPeriod(std::vector<std::string>&& args);
-    Result<Success> ParseFile(std::vector<std::string>&& args);
-    Result<Success> ParseUser(std::vector<std::string>&& args);
-    Result<Success> ParseWritepid(std::vector<std::string>&& args);
-    Result<Success> ParseUpdatable(std::vector<std::string>&& args);
-
-    template <typename T>
-    Result<Success> AddDescriptor(std::vector<std::string>&& args);
+    void KillProcessGroup(int signal, bool report_oneshot = false);
+    void SetProcessAttributesAndCaps();
 
     static unsigned long next_start_order_;
     static bool is_exec_service_running_;
 
     std::string name_;
     std::set<std::string> classnames_;
-    std::string console_;
 
     unsigned flags_;
     pid_t pid_;
@@ -192,32 +156,27 @@
     android::base::boot_clock::time_point time_crashed_;  // first crash within inspection window
     int crash_count_;                     // number of times crashed within window
 
-    uid_t uid_;
-    gid_t gid_;
-    std::vector<gid_t> supp_gids_;
     std::optional<CapSet> capabilities_;
-    unsigned namespace_flags_;
-    // Pair of namespace type, path to namespace.
-    std::vector<std::pair<int, std::string>> namespaces_to_enter_;
+    ProcessAttributes proc_attr_;
+    NamespaceInfo namespaces_;
 
     std::string seclabel_;
 
-    std::vector<std::unique_ptr<DescriptorInfo>> descriptors_;
+    std::vector<SocketDescriptor> sockets_;
+    std::vector<FileDescriptor> files_;
     std::vector<std::pair<std::string, std::string>> environment_vars_;
 
     Action onrestart_;  // Commands to execute on restart.
 
     std::vector<std::string> writepid_files_;
 
+    std::vector<std::string> task_profiles_;
+
     std::set<std::string> interfaces_;  // e.g. some.package.foo@1.0::IBaz/instance-name
 
     // keycodes for triggering this service via /dev/input/input*
     std::vector<int> keycodes_;
 
-    IoSchedClass ioprio_class_;
-    int ioprio_pri_;
-    int priority_;
-
     int oom_score_adjust_;
 
     int swappiness_ = -1;
@@ -233,8 +192,6 @@
 
     unsigned long start_order_;
 
-    std::vector<std::pair<int, rlimit>> rlimits_;
-
     bool sigstop_ = false;
 
     std::chrono::seconds restart_period_ = 5s;
@@ -251,81 +208,11 @@
     bool post_data_ = false;
 
     bool running_at_post_data_reset_ = false;
-};
 
-class ServiceList {
-  public:
-    static ServiceList& GetInstance();
+    std::optional<std::string> on_failure_reboot_target_;
 
-    // Exposed for testing
-    ServiceList();
-
-    void AddService(std::unique_ptr<Service> service);
-    void RemoveService(const Service& svc);
-
-    template <typename T, typename F = decltype(&Service::name)>
-    Service* FindService(T value, F function = &Service::name) const {
-        auto svc = std::find_if(services_.begin(), services_.end(),
-                                [&function, &value](const std::unique_ptr<Service>& s) {
-                                    return std::invoke(function, s) == value;
-                                });
-        if (svc != services_.end()) {
-            return svc->get();
-        }
-        return nullptr;
-    }
-
-    Service* FindInterface(const std::string& interface_name) {
-        for (const auto& svc : services_) {
-            if (svc->interfaces().count(interface_name) > 0) {
-                return svc.get();
-            }
-        }
-
-        return nullptr;
-    }
-
-    void DumpState() const;
-
-    auto begin() const { return services_.begin(); }
-    auto end() const { return services_.end(); }
-    const std::vector<std::unique_ptr<Service>>& services() const { return services_; }
-    const std::vector<Service*> services_in_shutdown_order() const;
-
-    void MarkPostData();
-    bool IsPostData();
-    void MarkServicesUpdate();
-    bool IsServicesUpdated() const { return services_update_finished_; }
-    void DelayService(const Service& service);
-
-  private:
-    std::vector<std::unique_ptr<Service>> services_;
-
-    bool post_data_ = false;
-    bool services_update_finished_ = false;
-    std::vector<std::string> delayed_service_names_;
-};
-
-class ServiceParser : public SectionParser {
-  public:
-    ServiceParser(ServiceList* service_list, std::vector<Subcontext>* subcontexts)
-        : service_list_(service_list), subcontexts_(subcontexts), service_(nullptr) {}
-    Result<Success> ParseSection(std::vector<std::string>&& args, const std::string& filename,
-                                 int line) override;
-    Result<Success> ParseLineSection(std::vector<std::string>&& args, int line) override;
-    Result<Success> EndSection() override;
-    void EndFile() override { filename_ = ""; }
-
-  private:
-    bool IsValidName(const std::string& name) const;
-
-    ServiceList* service_list_;
-    std::vector<Subcontext>* subcontexts_;
-    std::unique_ptr<Service> service_;
-    std::string filename_;
+    bool from_apex_ = false;
 };
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/service_list.cpp b/init/service_list.cpp
new file mode 100644
index 0000000..3047821
--- /dev/null
+++ b/init/service_list.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "service_list.h"
+
+#include <android-base/logging.h>
+
+namespace android {
+namespace init {
+
+ServiceList::ServiceList() {}
+
+ServiceList& ServiceList::GetInstance() {
+    static ServiceList instance;
+    return instance;
+}
+
+size_t ServiceList::CheckAllCommands() {
+    size_t failures = 0;
+    for (const auto& service : services_) {
+        failures += service->CheckAllCommands();
+    }
+    return failures;
+}
+
+void ServiceList::AddService(std::unique_ptr<Service> service) {
+    services_.emplace_back(std::move(service));
+}
+
+// Shutdown services in the opposite order that they were started.
+const std::vector<Service*> ServiceList::services_in_shutdown_order() const {
+    std::vector<Service*> shutdown_services;
+    for (const auto& service : services_) {
+        if (service->start_order() > 0) shutdown_services.emplace_back(service.get());
+    }
+    std::sort(shutdown_services.begin(), shutdown_services.end(),
+              [](const auto& a, const auto& b) { return a->start_order() > b->start_order(); });
+    return shutdown_services;
+}
+
+void ServiceList::RemoveService(const Service& svc) {
+    auto svc_it = std::find_if(
+            services_.begin(), services_.end(),
+            [&svc](const std::unique_ptr<Service>& s) { return svc.name() == s->name(); });
+    if (svc_it == services_.end()) {
+        return;
+    }
+
+    services_.erase(svc_it);
+}
+
+void ServiceList::DumpState() const {
+    for (const auto& s : services_) {
+        s->DumpState();
+    }
+}
+
+void ServiceList::MarkPostData() {
+    post_data_ = true;
+}
+
+bool ServiceList::IsPostData() {
+    return post_data_;
+}
+
+void ServiceList::MarkServicesUpdate() {
+    services_update_finished_ = true;
+
+    // start the delayed services
+    for (const auto& name : delayed_service_names_) {
+        Service* service = FindService(name);
+        if (service == nullptr) {
+            LOG(ERROR) << "delayed service '" << name << "' could not be found.";
+            continue;
+        }
+        if (auto result = service->Start(); !result.ok()) {
+            LOG(ERROR) << result.error().message();
+        }
+    }
+    delayed_service_names_.clear();
+}
+
+void ServiceList::DelayService(const Service& service) {
+    if (services_update_finished_) {
+        LOG(ERROR) << "Cannot delay the start of service '" << service.name()
+                   << "' because all services are already updated. Ignoring.";
+        return;
+    }
+    delayed_service_names_.emplace_back(service.name());
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/service_list.h b/init/service_list.h
new file mode 100644
index 0000000..555da25
--- /dev/null
+++ b/init/service_list.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include "service.h"
+
+namespace android {
+namespace init {
+
+class ServiceList {
+  public:
+    static ServiceList& GetInstance();
+
+    // Exposed for testing
+    ServiceList();
+    size_t CheckAllCommands();
+
+    void AddService(std::unique_ptr<Service> service);
+    void RemoveService(const Service& svc);
+    template <class UnaryPredicate>
+    void RemoveServiceIf(UnaryPredicate predicate) {
+        services_.erase(std::remove_if(services_.begin(), services_.end(), predicate),
+                        services_.end());
+    }
+
+    template <typename T, typename F = decltype(&Service::name)>
+    Service* FindService(T value, F function = &Service::name) const {
+        auto svc = std::find_if(services_.begin(), services_.end(),
+                                [&function, &value](const std::unique_ptr<Service>& s) {
+                                    return std::invoke(function, s) == value;
+                                });
+        if (svc != services_.end()) {
+            return svc->get();
+        }
+        return nullptr;
+    }
+
+    Service* FindInterface(const std::string& interface_name) {
+        for (const auto& svc : services_) {
+            if (svc->interfaces().count(interface_name) > 0) {
+                return svc.get();
+            }
+        }
+
+        return nullptr;
+    }
+
+    void DumpState() const;
+
+    auto begin() const { return services_.begin(); }
+    auto end() const { return services_.end(); }
+    const std::vector<Service*> services_in_shutdown_order() const;
+
+    void MarkPostData();
+    bool IsPostData();
+    void MarkServicesUpdate();
+    bool IsServicesUpdated() const { return services_update_finished_; }
+    void DelayService(const Service& service);
+
+    void ResetState() {
+        post_data_ = false;
+        services_update_finished_ = false;
+    }
+
+  private:
+    std::vector<std::unique_ptr<Service>> services_;
+
+    bool post_data_ = false;
+    bool services_update_finished_ = false;
+    std::vector<std::string> delayed_service_names_;
+};
+
+}  // namespace init
+}  // namespace android
diff --git a/init/service_parser.cpp b/init/service_parser.cpp
new file mode 100644
index 0000000..bdac077
--- /dev/null
+++ b/init/service_parser.cpp
@@ -0,0 +1,645 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "service_parser.h"
+
+#include <linux/input.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+
+#include <algorithm>
+#include <sstream>
+
+#include <android-base/logging.h>
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+#include <hidl-util/FQName.h>
+#include <system/thread_defs.h>
+
+#include "lmkd_service.h"
+#include "rlimit_parser.h"
+#include "service_utils.h"
+#include "util.h"
+
+#ifdef INIT_FULL_SOURCES
+#include <android/api-level.h>
+#include <sys/system_properties.h>
+
+#include "selinux.h"
+#else
+#include "host_init_stubs.h"
+#endif
+
+using android::base::ParseInt;
+using android::base::Split;
+using android::base::StartsWith;
+
+namespace android {
+namespace init {
+
+Result<void> ServiceParser::ParseCapabilities(std::vector<std::string>&& args) {
+    service_->capabilities_ = 0;
+
+    if (!CapAmbientSupported()) {
+        return Error()
+               << "capabilities requested but the kernel does not support ambient capabilities";
+    }
+
+    unsigned int last_valid_cap = GetLastValidCap();
+    if (last_valid_cap >= service_->capabilities_->size()) {
+        LOG(WARNING) << "last valid run-time capability is larger than CAP_LAST_CAP";
+    }
+
+    for (size_t i = 1; i < args.size(); i++) {
+        const std::string& arg = args[i];
+        int res = LookupCap(arg);
+        if (res < 0) {
+            return Errorf("invalid capability '{}'", arg);
+        }
+        unsigned int cap = static_cast<unsigned int>(res);  // |res| is >= 0.
+        if (cap > last_valid_cap) {
+            return Errorf("capability '{}' not supported by the kernel", arg);
+        }
+        (*service_->capabilities_)[cap] = true;
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseClass(std::vector<std::string>&& args) {
+    service_->classnames_ = std::set<std::string>(args.begin() + 1, args.end());
+    return {};
+}
+
+Result<void> ServiceParser::ParseConsole(std::vector<std::string>&& args) {
+    if (service_->proc_attr_.stdio_to_kmsg) {
+        return Error() << "'console' and 'stdio_to_kmsg' are mutually exclusive";
+    }
+    service_->flags_ |= SVC_CONSOLE;
+    service_->proc_attr_.console = args.size() > 1 ? "/dev/" + args[1] : "";
+    return {};
+}
+
+Result<void> ServiceParser::ParseCritical(std::vector<std::string>&& args) {
+    service_->flags_ |= SVC_CRITICAL;
+    return {};
+}
+
+Result<void> ServiceParser::ParseDisabled(std::vector<std::string>&& args) {
+    service_->flags_ |= SVC_DISABLED;
+    service_->flags_ |= SVC_RC_DISABLED;
+    return {};
+}
+
+Result<void> ServiceParser::ParseEnterNamespace(std::vector<std::string>&& args) {
+    if (args[1] != "net") {
+        return Error() << "Init only supports entering network namespaces";
+    }
+    if (!service_->namespaces_.namespaces_to_enter.empty()) {
+        return Error() << "Only one network namespace may be entered";
+    }
+    // Network namespaces require that /sys is remounted, otherwise the old adapters will still be
+    // present. Therefore, they also require mount namespaces.
+    service_->namespaces_.flags |= CLONE_NEWNS;
+    service_->namespaces_.namespaces_to_enter.emplace_back(CLONE_NEWNET, std::move(args[2]));
+    return {};
+}
+
+Result<void> ServiceParser::ParseGroup(std::vector<std::string>&& args) {
+    auto gid = DecodeUid(args[1]);
+    if (!gid.ok()) {
+        return Error() << "Unable to decode GID for '" << args[1] << "': " << gid.error();
+    }
+    service_->proc_attr_.gid = *gid;
+
+    for (std::size_t n = 2; n < args.size(); n++) {
+        gid = DecodeUid(args[n]);
+        if (!gid.ok()) {
+            return Error() << "Unable to decode GID for '" << args[n] << "': " << gid.error();
+        }
+        service_->proc_attr_.supp_gids.emplace_back(*gid);
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParsePriority(std::vector<std::string>&& args) {
+    service_->proc_attr_.priority = 0;
+    if (!ParseInt(args[1], &service_->proc_attr_.priority,
+                  static_cast<int>(ANDROID_PRIORITY_HIGHEST),  // highest is negative
+                  static_cast<int>(ANDROID_PRIORITY_LOWEST))) {
+        return Errorf("process priority value must be range {} - {}", ANDROID_PRIORITY_HIGHEST,
+                      ANDROID_PRIORITY_LOWEST);
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseInterface(std::vector<std::string>&& args) {
+    const std::string& interface_name = args[1];
+    const std::string& instance_name = args[2];
+
+    // AIDL services don't use fully qualified names and instead just use "interface aidl <name>"
+    if (interface_name != "aidl") {
+        FQName fq_name;
+        if (!FQName::parse(interface_name, &fq_name)) {
+            return Error() << "Invalid fully-qualified name for interface '" << interface_name
+                           << "'";
+        }
+
+        if (!fq_name.isFullyQualified()) {
+            return Error() << "Interface name not fully-qualified '" << interface_name << "'";
+        }
+
+        if (fq_name.isValidValueName()) {
+            return Error() << "Interface name must not be a value name '" << interface_name << "'";
+        }
+    }
+
+    const std::string fullname = interface_name + "/" + instance_name;
+
+    for (const auto& svc : *service_list_) {
+        if (svc->interfaces().count(fullname) > 0) {
+            return Error() << "Interface '" << fullname << "' redefined in " << service_->name()
+                           << " but is already defined by " << svc->name();
+        }
+    }
+
+    service_->interfaces_.insert(fullname);
+
+    return {};
+}
+
+Result<void> ServiceParser::ParseIoprio(std::vector<std::string>&& args) {
+    if (!ParseInt(args[2], &service_->proc_attr_.ioprio_pri, 0, 7)) {
+        return Error() << "priority value must be range 0 - 7";
+    }
+
+    if (args[1] == "rt") {
+        service_->proc_attr_.ioprio_class = IoSchedClass_RT;
+    } else if (args[1] == "be") {
+        service_->proc_attr_.ioprio_class = IoSchedClass_BE;
+    } else if (args[1] == "idle") {
+        service_->proc_attr_.ioprio_class = IoSchedClass_IDLE;
+    } else {
+        return Error() << "ioprio option usage: ioprio <rt|be|idle> <0-7>";
+    }
+
+    return {};
+}
+
+Result<void> ServiceParser::ParseKeycodes(std::vector<std::string>&& args) {
+    auto it = args.begin() + 1;
+    if (args.size() == 2 && StartsWith(args[1], "$")) {
+        auto expanded = ExpandProps(args[1]);
+        if (!expanded.ok()) {
+            return expanded.error();
+        }
+
+        // If the property is not set, it defaults to none, in which case there are no keycodes
+        // for this service.
+        if (*expanded == "none") {
+            return {};
+        }
+
+        args = Split(*expanded, ",");
+        it = args.begin();
+    }
+
+    for (; it != args.end(); ++it) {
+        int code;
+        if (ParseInt(*it, &code, 0, KEY_MAX)) {
+            for (auto& key : service_->keycodes_) {
+                if (key == code) return Error() << "duplicate keycode: " << *it;
+            }
+            service_->keycodes_.insert(
+                    std::upper_bound(service_->keycodes_.begin(), service_->keycodes_.end(), code),
+                    code);
+        } else {
+            return Error() << "invalid keycode: " << *it;
+        }
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseOneshot(std::vector<std::string>&& args) {
+    service_->flags_ |= SVC_ONESHOT;
+    return {};
+}
+
+Result<void> ServiceParser::ParseOnrestart(std::vector<std::string>&& args) {
+    args.erase(args.begin());
+    int line = service_->onrestart_.NumCommands() + 1;
+    if (auto result = service_->onrestart_.AddCommand(std::move(args), line); !result.ok()) {
+        return Error() << "cannot add Onrestart command: " << result.error();
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseNamespace(std::vector<std::string>&& args) {
+    for (size_t i = 1; i < args.size(); i++) {
+        if (args[i] == "pid") {
+            service_->namespaces_.flags |= CLONE_NEWPID;
+            // PID namespaces require mount namespaces.
+            service_->namespaces_.flags |= CLONE_NEWNS;
+        } else if (args[i] == "mnt") {
+            service_->namespaces_.flags |= CLONE_NEWNS;
+        } else {
+            return Error() << "namespace must be 'pid' or 'mnt'";
+        }
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseOomScoreAdjust(std::vector<std::string>&& args) {
+    if (!ParseInt(args[1], &service_->oom_score_adjust_, MIN_OOM_SCORE_ADJUST,
+                  MAX_OOM_SCORE_ADJUST)) {
+        return Error() << "oom_score_adjust value must be in range " << MIN_OOM_SCORE_ADJUST
+                       << " - +" << MAX_OOM_SCORE_ADJUST;
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseOverride(std::vector<std::string>&& args) {
+    service_->override_ = true;
+    return {};
+}
+
+Result<void> ServiceParser::ParseMemcgSwappiness(std::vector<std::string>&& args) {
+    if (!ParseInt(args[1], &service_->swappiness_, 0)) {
+        return Error() << "swappiness value must be equal or greater than 0";
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseMemcgLimitInBytes(std::vector<std::string>&& args) {
+    if (!ParseInt(args[1], &service_->limit_in_bytes_, 0)) {
+        return Error() << "limit_in_bytes value must be equal or greater than 0";
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseMemcgLimitPercent(std::vector<std::string>&& args) {
+    if (!ParseInt(args[1], &service_->limit_percent_, 0)) {
+        return Error() << "limit_percent value must be equal or greater than 0";
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseMemcgLimitProperty(std::vector<std::string>&& args) {
+    service_->limit_property_ = std::move(args[1]);
+    return {};
+}
+
+Result<void> ServiceParser::ParseMemcgSoftLimitInBytes(std::vector<std::string>&& args) {
+    if (!ParseInt(args[1], &service_->soft_limit_in_bytes_, 0)) {
+        return Error() << "soft_limit_in_bytes value must be equal or greater than 0";
+    }
+    return {};
+}
+
+Result<void> ServiceParser::ParseProcessRlimit(std::vector<std::string>&& args) {
+    auto rlimit = ParseRlimit(args);
+    if (!rlimit.ok()) return rlimit.error();
+
+    service_->proc_attr_.rlimits.emplace_back(*rlimit);
+    return {};
+}
+
+Result<void> ServiceParser::ParseRebootOnFailure(std::vector<std::string>&& args) {
+    if (service_->on_failure_reboot_target_) {
+        return Error() << "Only one reboot_on_failure command may be specified";
+    }
+    if (!StartsWith(args[1], "shutdown") && !StartsWith(args[1], "reboot")) {
+        return Error()
+               << "reboot_on_failure commands must begin with either 'shutdown' or 'reboot'";
+    }
+    service_->on_failure_reboot_target_ = std::move(args[1]);
+    return {};
+}
+
+Result<void> ServiceParser::ParseRestartPeriod(std::vector<std::string>&& args) {
+    int period;
+    if (!ParseInt(args[1], &period, 5)) {
+        return Error() << "restart_period value must be an integer >= 5";
+    }
+    service_->restart_period_ = std::chrono::seconds(period);
+    return {};
+}
+
+Result<void> ServiceParser::ParseSeclabel(std::vector<std::string>&& args) {
+    service_->seclabel_ = std::move(args[1]);
+    return {};
+}
+
+Result<void> ServiceParser::ParseSigstop(std::vector<std::string>&& args) {
+    service_->sigstop_ = true;
+    return {};
+}
+
+Result<void> ServiceParser::ParseSetenv(std::vector<std::string>&& args) {
+    service_->environment_vars_.emplace_back(std::move(args[1]), std::move(args[2]));
+    return {};
+}
+
+Result<void> ServiceParser::ParseShutdown(std::vector<std::string>&& args) {
+    if (args[1] == "critical") {
+        service_->flags_ |= SVC_SHUTDOWN_CRITICAL;
+        return {};
+    }
+    return Error() << "Invalid shutdown option";
+}
+
+Result<void> ServiceParser::ParseTaskProfiles(std::vector<std::string>&& args) {
+    args.erase(args.begin());
+    service_->task_profiles_ = std::move(args);
+    return {};
+}
+
+Result<void> ServiceParser::ParseTimeoutPeriod(std::vector<std::string>&& args) {
+    int period;
+    if (!ParseInt(args[1], &period, 1)) {
+        return Error() << "timeout_period value must be an integer >= 1";
+    }
+    service_->timeout_period_ = std::chrono::seconds(period);
+    return {};
+}
+
+// name type perm [ uid gid context ]
+Result<void> ServiceParser::ParseSocket(std::vector<std::string>&& args) {
+    SocketDescriptor socket;
+    socket.name = std::move(args[1]);
+
+    auto types = Split(args[2], "+");
+    if (types[0] == "stream") {
+        socket.type = SOCK_STREAM;
+    } else if (types[0] == "dgram") {
+        socket.type = SOCK_DGRAM;
+    } else if (types[0] == "seqpacket") {
+        socket.type = SOCK_SEQPACKET;
+    } else {
+        return Error() << "socket type must be 'dgram', 'stream' or 'seqpacket', got '" << types[0]
+                       << "' instead.";
+    }
+
+    if (types.size() > 1) {
+        if (types.size() == 2 && types[1] == "passcred") {
+            socket.passcred = true;
+        } else {
+            return Error() << "Only 'passcred' may be used to modify the socket type";
+        }
+    }
+
+    errno = 0;
+    char* end = nullptr;
+    socket.perm = strtol(args[3].c_str(), &end, 8);
+    if (errno != 0) {
+        return ErrnoError() << "Unable to parse permissions '" << args[3] << "'";
+    }
+    if (end == args[3].c_str() || *end != '\0') {
+        errno = EINVAL;
+        return ErrnoError() << "Unable to parse permissions '" << args[3] << "'";
+    }
+
+    if (args.size() > 4) {
+        auto uid = DecodeUid(args[4]);
+        if (!uid.ok()) {
+            return Error() << "Unable to find UID for '" << args[4] << "': " << uid.error();
+        }
+        socket.uid = *uid;
+    }
+
+    if (args.size() > 5) {
+        auto gid = DecodeUid(args[5]);
+        if (!gid.ok()) {
+            return Error() << "Unable to find GID for '" << args[5] << "': " << gid.error();
+        }
+        socket.gid = *gid;
+    }
+
+    socket.context = args.size() > 6 ? args[6] : "";
+
+    auto old = std::find_if(service_->sockets_.begin(), service_->sockets_.end(),
+                            [&socket](const auto& other) { return socket.name == other.name; });
+
+    if (old != service_->sockets_.end()) {
+        return Error() << "duplicate socket descriptor '" << socket.name << "'";
+    }
+
+    service_->sockets_.emplace_back(std::move(socket));
+
+    return {};
+}
+
+Result<void> ServiceParser::ParseStdioToKmsg(std::vector<std::string>&& args) {
+    if (service_->flags_ & SVC_CONSOLE) {
+        return Error() << "'stdio_to_kmsg' and 'console' are mutually exclusive";
+    }
+    service_->proc_attr_.stdio_to_kmsg = true;
+    return {};
+}
+
+// name type
+Result<void> ServiceParser::ParseFile(std::vector<std::string>&& args) {
+    if (args[2] != "r" && args[2] != "w" && args[2] != "rw") {
+        return Error() << "file type must be 'r', 'w' or 'rw'";
+    }
+
+    FileDescriptor file;
+    file.type = args[2];
+
+    auto file_name = ExpandProps(args[1]);
+    if (!file_name.ok()) {
+        return Error() << "Could not expand file path ': " << file_name.error();
+    }
+    file.name = *file_name;
+    if (file.name[0] != '/' || file.name.find("../") != std::string::npos) {
+        return Error() << "file name must not be relative";
+    }
+
+    auto old = std::find_if(service_->files_.begin(), service_->files_.end(),
+                            [&file](const auto& other) { return other.name == file.name; });
+
+    if (old != service_->files_.end()) {
+        return Error() << "duplicate file descriptor '" << file.name << "'";
+    }
+
+    service_->files_.emplace_back(std::move(file));
+
+    return {};
+}
+
+Result<void> ServiceParser::ParseUser(std::vector<std::string>&& args) {
+    auto uid = DecodeUid(args[1]);
+    if (!uid.ok()) {
+        return Error() << "Unable to find UID for '" << args[1] << "': " << uid.error();
+    }
+    service_->proc_attr_.uid = *uid;
+    return {};
+}
+
+Result<void> ServiceParser::ParseWritepid(std::vector<std::string>&& args) {
+    args.erase(args.begin());
+    service_->writepid_files_ = std::move(args);
+    return {};
+}
+
+Result<void> ServiceParser::ParseUpdatable(std::vector<std::string>&& args) {
+    service_->updatable_ = true;
+    return {};
+}
+
+const KeywordMap<ServiceParser::OptionParser>& ServiceParser::GetParserMap() const {
+    constexpr std::size_t kMax = std::numeric_limits<std::size_t>::max();
+    // clang-format off
+    static const KeywordMap<ServiceParser::OptionParser> parser_map = {
+        {"capabilities",            {0,     kMax, &ServiceParser::ParseCapabilities}},
+        {"class",                   {1,     kMax, &ServiceParser::ParseClass}},
+        {"console",                 {0,     1,    &ServiceParser::ParseConsole}},
+        {"critical",                {0,     0,    &ServiceParser::ParseCritical}},
+        {"disabled",                {0,     0,    &ServiceParser::ParseDisabled}},
+        {"enter_namespace",         {2,     2,    &ServiceParser::ParseEnterNamespace}},
+        {"file",                    {2,     2,    &ServiceParser::ParseFile}},
+        {"group",                   {1,     NR_SVC_SUPP_GIDS + 1, &ServiceParser::ParseGroup}},
+        {"interface",               {2,     2,    &ServiceParser::ParseInterface}},
+        {"ioprio",                  {2,     2,    &ServiceParser::ParseIoprio}},
+        {"keycodes",                {1,     kMax, &ServiceParser::ParseKeycodes}},
+        {"memcg.limit_in_bytes",    {1,     1,    &ServiceParser::ParseMemcgLimitInBytes}},
+        {"memcg.limit_percent",     {1,     1,    &ServiceParser::ParseMemcgLimitPercent}},
+        {"memcg.limit_property",    {1,     1,    &ServiceParser::ParseMemcgLimitProperty}},
+        {"memcg.soft_limit_in_bytes",
+                                    {1,     1,    &ServiceParser::ParseMemcgSoftLimitInBytes}},
+        {"memcg.swappiness",        {1,     1,    &ServiceParser::ParseMemcgSwappiness}},
+        {"namespace",               {1,     2,    &ServiceParser::ParseNamespace}},
+        {"oneshot",                 {0,     0,    &ServiceParser::ParseOneshot}},
+        {"onrestart",               {1,     kMax, &ServiceParser::ParseOnrestart}},
+        {"oom_score_adjust",        {1,     1,    &ServiceParser::ParseOomScoreAdjust}},
+        {"override",                {0,     0,    &ServiceParser::ParseOverride}},
+        {"priority",                {1,     1,    &ServiceParser::ParsePriority}},
+        {"reboot_on_failure",       {1,     1,    &ServiceParser::ParseRebootOnFailure}},
+        {"restart_period",          {1,     1,    &ServiceParser::ParseRestartPeriod}},
+        {"rlimit",                  {3,     3,    &ServiceParser::ParseProcessRlimit}},
+        {"seclabel",                {1,     1,    &ServiceParser::ParseSeclabel}},
+        {"setenv",                  {2,     2,    &ServiceParser::ParseSetenv}},
+        {"shutdown",                {1,     1,    &ServiceParser::ParseShutdown}},
+        {"sigstop",                 {0,     0,    &ServiceParser::ParseSigstop}},
+        {"socket",                  {3,     6,    &ServiceParser::ParseSocket}},
+        {"stdio_to_kmsg",           {0,     0,    &ServiceParser::ParseStdioToKmsg}},
+        {"task_profiles",           {1,     kMax, &ServiceParser::ParseTaskProfiles}},
+        {"timeout_period",          {1,     1,    &ServiceParser::ParseTimeoutPeriod}},
+        {"updatable",               {0,     0,    &ServiceParser::ParseUpdatable}},
+        {"user",                    {1,     1,    &ServiceParser::ParseUser}},
+        {"writepid",                {1,     kMax, &ServiceParser::ParseWritepid}},
+    };
+    // clang-format on
+    return parser_map;
+}
+
+Result<void> ServiceParser::ParseSection(std::vector<std::string>&& args,
+                                         const std::string& filename, int line) {
+    if (args.size() < 3) {
+        return Error() << "services must have a name and a program";
+    }
+
+    const std::string& name = args[1];
+    if (!IsValidName(name)) {
+        return Error() << "invalid service name '" << name << "'";
+    }
+
+    filename_ = filename;
+
+    Subcontext* restart_action_subcontext = nullptr;
+    if (subcontext_ && subcontext_->PathMatchesSubcontext(filename)) {
+        restart_action_subcontext = subcontext_;
+    }
+
+    std::vector<std::string> str_args(args.begin() + 2, args.end());
+
+    if (SelinuxGetVendorAndroidVersion() <= __ANDROID_API_P__) {
+        if (str_args[0] == "/sbin/watchdogd") {
+            str_args[0] = "/system/bin/watchdogd";
+        }
+    }
+    if (SelinuxGetVendorAndroidVersion() <= __ANDROID_API_Q__) {
+        if (str_args[0] == "/charger") {
+            str_args[0] = "/system/bin/charger";
+        }
+    }
+
+    service_ = std::make_unique<Service>(name, restart_action_subcontext, str_args, from_apex_);
+    return {};
+}
+
+Result<void> ServiceParser::ParseLineSection(std::vector<std::string>&& args, int line) {
+    if (!service_) {
+        return {};
+    }
+
+    auto parser = GetParserMap().Find(args);
+
+    if (!parser.ok()) return parser.error();
+
+    return std::invoke(*parser, this, std::move(args));
+}
+
+Result<void> ServiceParser::EndSection() {
+    if (!service_) {
+        return {};
+    }
+
+    if (interface_inheritance_hierarchy_) {
+        if (const auto& check_hierarchy_result = CheckInterfaceInheritanceHierarchy(
+                    service_->interfaces(), *interface_inheritance_hierarchy_);
+            !check_hierarchy_result.ok()) {
+            return Error() << check_hierarchy_result.error();
+        }
+    }
+
+    if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_R__) {
+        if ((service_->flags() & SVC_CRITICAL) != 0 && (service_->flags() & SVC_ONESHOT) != 0) {
+            return Error() << "service '" << service_->name()
+                           << "' can't be both critical and oneshot";
+        }
+    }
+
+    Service* old_service = service_list_->FindService(service_->name());
+    if (old_service) {
+        if (!service_->is_override()) {
+            return Error() << "ignored duplicate definition of service '" << service_->name()
+                           << "'";
+        }
+
+        if (StartsWith(filename_, "/apex/") && !old_service->is_updatable()) {
+            return Error() << "cannot update a non-updatable service '" << service_->name()
+                           << "' with a config in APEX";
+        }
+
+        service_list_->RemoveService(*old_service);
+        old_service = nullptr;
+    }
+
+    service_list_->AddService(std::move(service_));
+
+    return {};
+}
+
+bool ServiceParser::IsValidName(const std::string& name) const {
+    // Property names can be any length, but may only contain certain characters.
+    // Property values can contain any characters, but may only be a certain length.
+    // (The latter restriction is needed because `start` and `stop` work by writing
+    // the service name to the "ctl.start" and "ctl.stop" properties.)
+    return IsLegalPropertyName("init.svc." + name) && name.size() <= PROP_VALUE_MAX;
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/service_parser.h b/init/service_parser.h
new file mode 100644
index 0000000..0fd2da5
--- /dev/null
+++ b/init/service_parser.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <vector>
+
+#include "interface_utils.h"
+#include "parser.h"
+#include "service.h"
+#include "service_list.h"
+#include "subcontext.h"
+
+namespace android {
+namespace init {
+
+class ServiceParser : public SectionParser {
+  public:
+    ServiceParser(
+            ServiceList* service_list, Subcontext* subcontext,
+            const std::optional<InterfaceInheritanceHierarchyMap>& interface_inheritance_hierarchy,
+            bool from_apex = false)
+        : service_list_(service_list),
+          subcontext_(subcontext),
+          interface_inheritance_hierarchy_(interface_inheritance_hierarchy),
+          service_(nullptr),
+          from_apex_(from_apex) {}
+    Result<void> ParseSection(std::vector<std::string>&& args, const std::string& filename,
+                              int line) override;
+    Result<void> ParseLineSection(std::vector<std::string>&& args, int line) override;
+    Result<void> EndSection() override;
+    void EndFile() override { filename_ = ""; }
+
+  private:
+    using OptionParser = Result<void> (ServiceParser::*)(std::vector<std::string>&& args);
+    const KeywordMap<ServiceParser::OptionParser>& GetParserMap() const;
+
+    Result<void> ParseCapabilities(std::vector<std::string>&& args);
+    Result<void> ParseClass(std::vector<std::string>&& args);
+    Result<void> ParseConsole(std::vector<std::string>&& args);
+    Result<void> ParseCritical(std::vector<std::string>&& args);
+    Result<void> ParseDisabled(std::vector<std::string>&& args);
+    Result<void> ParseEnterNamespace(std::vector<std::string>&& args);
+    Result<void> ParseGroup(std::vector<std::string>&& args);
+    Result<void> ParsePriority(std::vector<std::string>&& args);
+    Result<void> ParseInterface(std::vector<std::string>&& args);
+    Result<void> ParseIoprio(std::vector<std::string>&& args);
+    Result<void> ParseKeycodes(std::vector<std::string>&& args);
+    Result<void> ParseOneshot(std::vector<std::string>&& args);
+    Result<void> ParseOnrestart(std::vector<std::string>&& args);
+    Result<void> ParseOomScoreAdjust(std::vector<std::string>&& args);
+    Result<void> ParseOverride(std::vector<std::string>&& args);
+    Result<void> ParseMemcgLimitInBytes(std::vector<std::string>&& args);
+    Result<void> ParseMemcgLimitPercent(std::vector<std::string>&& args);
+    Result<void> ParseMemcgLimitProperty(std::vector<std::string>&& args);
+    Result<void> ParseMemcgSoftLimitInBytes(std::vector<std::string>&& args);
+    Result<void> ParseMemcgSwappiness(std::vector<std::string>&& args);
+    Result<void> ParseNamespace(std::vector<std::string>&& args);
+    Result<void> ParseProcessRlimit(std::vector<std::string>&& args);
+    Result<void> ParseRebootOnFailure(std::vector<std::string>&& args);
+    Result<void> ParseRestartPeriod(std::vector<std::string>&& args);
+    Result<void> ParseSeclabel(std::vector<std::string>&& args);
+    Result<void> ParseSetenv(std::vector<std::string>&& args);
+    Result<void> ParseShutdown(std::vector<std::string>&& args);
+    Result<void> ParseSigstop(std::vector<std::string>&& args);
+    Result<void> ParseSocket(std::vector<std::string>&& args);
+    Result<void> ParseStdioToKmsg(std::vector<std::string>&& args);
+    Result<void> ParseTaskProfiles(std::vector<std::string>&& args);
+    Result<void> ParseTimeoutPeriod(std::vector<std::string>&& args);
+    Result<void> ParseFile(std::vector<std::string>&& args);
+    Result<void> ParseUser(std::vector<std::string>&& args);
+    Result<void> ParseWritepid(std::vector<std::string>&& args);
+    Result<void> ParseUpdatable(std::vector<std::string>&& args);
+
+    bool IsValidName(const std::string& name) const;
+
+    ServiceList* service_list_;
+    Subcontext* subcontext_;
+    std::optional<InterfaceInheritanceHierarchyMap> interface_inheritance_hierarchy_;
+    std::unique_ptr<Service> service_;
+    std::string filename_;
+    bool from_apex_ = false;
+};
+
+}  // namespace init
+}  // namespace android
diff --git a/init/service_test.cpp b/init/service_test.cpp
index 4bfaa6b..22ee844 100644
--- a/init/service_test.cpp
+++ b/init/service_test.cpp
@@ -23,6 +23,7 @@
 
 #include <gtest/gtest.h>
 
+#include "lmkd_service.h"
 #include "util.h"
 
 namespace android {
@@ -30,7 +31,7 @@
 
 TEST(service, pod_initialized) {
     constexpr auto memory_size = sizeof(Service);
-    alignas(alignof(Service)) char old_memory[memory_size];
+    alignas(alignof(Service)) unsigned char old_memory[memory_size];
 
     for (std::size_t i = 0; i < memory_size; ++i) {
         old_memory[i] = 0xFF;
@@ -45,11 +46,11 @@
     EXPECT_EQ(0, service_in_old_memory->crash_count());
     EXPECT_EQ(0U, service_in_old_memory->uid());
     EXPECT_EQ(0U, service_in_old_memory->gid());
-    EXPECT_EQ(0U, service_in_old_memory->namespace_flags());
+    EXPECT_EQ(0, service_in_old_memory->namespace_flags());
     EXPECT_EQ(IoSchedClass_NONE, service_in_old_memory->ioprio_class());
     EXPECT_EQ(0, service_in_old_memory->ioprio_pri());
     EXPECT_EQ(0, service_in_old_memory->priority());
-    EXPECT_EQ(-1000, service_in_old_memory->oom_score_adjust());
+    EXPECT_EQ(DEFAULT_OOM_SCORE_ADJUST, service_in_old_memory->oom_score_adjust());
     EXPECT_FALSE(service_in_old_memory->process_cgroup_empty());
 
     for (std::size_t i = 0; i < memory_size; ++i) {
@@ -64,26 +65,26 @@
     EXPECT_EQ(0, service_in_old_memory2->crash_count());
     EXPECT_EQ(0U, service_in_old_memory2->uid());
     EXPECT_EQ(0U, service_in_old_memory2->gid());
-    EXPECT_EQ(0U, service_in_old_memory2->namespace_flags());
+    EXPECT_EQ(0, service_in_old_memory2->namespace_flags());
     EXPECT_EQ(IoSchedClass_NONE, service_in_old_memory2->ioprio_class());
     EXPECT_EQ(0, service_in_old_memory2->ioprio_pri());
     EXPECT_EQ(0, service_in_old_memory2->priority());
-    EXPECT_EQ(-1000, service_in_old_memory2->oom_score_adjust());
+    EXPECT_EQ(DEFAULT_OOM_SCORE_ADJUST, service_in_old_memory2->oom_score_adjust());
     EXPECT_FALSE(service_in_old_memory->process_cgroup_empty());
 }
 
 TEST(service, make_temporary_oneshot_service_invalid_syntax) {
     std::vector<std::string> args;
     // Nothing.
-    ASSERT_EQ(nullptr, Service::MakeTemporaryOneshotService(args));
+    ASSERT_FALSE(Service::MakeTemporaryOneshotService(args).ok());
 
     // No arguments to 'exec'.
     args.push_back("exec");
-    ASSERT_EQ(nullptr, Service::MakeTemporaryOneshotService(args));
+    ASSERT_FALSE(Service::MakeTemporaryOneshotService(args).ok());
 
     // No command in "exec --".
     args.push_back("--");
-    ASSERT_EQ(nullptr, Service::MakeTemporaryOneshotService(args));
+    ASSERT_FALSE(Service::MakeTemporaryOneshotService(args).ok());
 }
 
 TEST(service, make_temporary_oneshot_service_too_many_supplementary_gids) {
@@ -97,7 +98,7 @@
     }
     args.push_back("--");
     args.push_back("/system/bin/id");
-    ASSERT_EQ(nullptr, Service::MakeTemporaryOneshotService(args));
+    ASSERT_FALSE(Service::MakeTemporaryOneshotService(args).ok());
 }
 
 static void Test_make_temporary_oneshot_service(bool dash_dash, bool seclabel, bool uid, bool gid,
@@ -122,8 +123,9 @@
     }
     args.push_back("/system/bin/toybox");
     args.push_back("id");
-    auto svc = Service::MakeTemporaryOneshotService(args);
-    ASSERT_NE(nullptr, svc);
+    auto service_ret = Service::MakeTemporaryOneshotService(args);
+    ASSERT_RESULT_OK(service_ret);
+    auto svc = std::move(*service_ret);
 
     if (seclabel) {
         ASSERT_EQ("u:r:su:s0", svc->seclabel());
@@ -132,14 +134,14 @@
     }
     if (uid) {
         auto decoded_uid = DecodeUid("log");
-        ASSERT_TRUE(decoded_uid);
+        ASSERT_RESULT_OK(decoded_uid);
         ASSERT_EQ(*decoded_uid, svc->uid());
     } else {
         ASSERT_EQ(0U, svc->uid());
     }
     if (gid) {
         auto decoded_uid = DecodeUid("shell");
-        ASSERT_TRUE(decoded_uid);
+        ASSERT_RESULT_OK(decoded_uid);
         ASSERT_EQ(*decoded_uid, svc->gid());
     } else {
         ASSERT_EQ(0U, svc->gid());
@@ -148,11 +150,11 @@
         ASSERT_EQ(2U, svc->supp_gids().size());
 
         auto decoded_uid = DecodeUid("system");
-        ASSERT_TRUE(decoded_uid);
+        ASSERT_RESULT_OK(decoded_uid);
         ASSERT_EQ(*decoded_uid, svc->supp_gids()[0]);
 
         decoded_uid = DecodeUid("adb");
-        ASSERT_TRUE(decoded_uid);
+        ASSERT_RESULT_OK(decoded_uid);
         ASSERT_EQ(*decoded_uid, svc->supp_gids()[1]);
     } else {
         ASSERT_EQ(0U, svc->supp_gids().size());
diff --git a/init/service_utils.cpp b/init/service_utils.cpp
new file mode 100644
index 0000000..484c2c8
--- /dev/null
+++ b/init/service_utils.cpp
@@ -0,0 +1,317 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "service_utils.h"
+
+#include <fcntl.h>
+#include <grp.h>
+#include <sys/mount.h>
+#include <sys/prctl.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <cutils/android_get_control_file.h>
+#include <cutils/sockets.h>
+#include <processgroup/processgroup.h>
+
+#include "mount_namespace.h"
+#include "util.h"
+
+using android::base::GetProperty;
+using android::base::StartsWith;
+using android::base::StringPrintf;
+using android::base::unique_fd;
+using android::base::WriteStringToFile;
+
+namespace android {
+namespace init {
+
+namespace {
+
+Result<void> EnterNamespace(int nstype, const char* path) {
+    auto fd = unique_fd{open(path, O_RDONLY | O_CLOEXEC)};
+    if (fd == -1) {
+        return ErrnoError() << "Could not open namespace at " << path;
+    }
+    if (setns(fd, nstype) == -1) {
+        return ErrnoError() << "Could not setns() namespace at " << path;
+    }
+    return {};
+}
+
+Result<void> SetUpMountNamespace(bool remount_proc, bool remount_sys) {
+    constexpr unsigned int kSafeFlags = MS_NODEV | MS_NOEXEC | MS_NOSUID;
+
+    // Recursively remount / as slave like zygote does so unmounting and mounting /proc
+    // doesn't interfere with the parent namespace's /proc mount. This will also
+    // prevent any other mounts/unmounts initiated by the service from interfering
+    // with the parent namespace but will still allow mount events from the parent
+    // namespace to propagate to the child.
+    if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) {
+        return ErrnoError() << "Could not remount(/) recursively as slave";
+    }
+
+    // umount() then mount() /proc and/or /sys
+    // Note that it is not sufficient to mount with MS_REMOUNT.
+    if (remount_proc) {
+        if (umount("/proc") == -1) {
+            return ErrnoError() << "Could not umount(/proc)";
+        }
+        if (mount("", "/proc", "proc", kSafeFlags, "") == -1) {
+            return ErrnoError() << "Could not mount(/proc)";
+        }
+    }
+    if (remount_sys) {
+        if (umount2("/sys", MNT_DETACH) == -1) {
+            return ErrnoError() << "Could not umount(/sys)";
+        }
+        if (mount("", "/sys", "sysfs", kSafeFlags, "") == -1) {
+            return ErrnoError() << "Could not mount(/sys)";
+        }
+    }
+    return {};
+}
+
+Result<void> SetUpPidNamespace(const char* name) {
+    if (prctl(PR_SET_NAME, name) == -1) {
+        return ErrnoError() << "Could not set name";
+    }
+
+    pid_t child_pid = fork();
+    if (child_pid == -1) {
+        return ErrnoError() << "Could not fork init inside the PID namespace";
+    }
+
+    if (child_pid > 0) {
+        // So that we exit with the right status.
+        static int init_exitstatus = 0;
+        signal(SIGTERM, [](int) { _exit(init_exitstatus); });
+
+        pid_t waited_pid;
+        int status;
+        while ((waited_pid = wait(&status)) > 0) {
+            // This loop will end when there are no processes left inside the
+            // PID namespace or when the init process inside the PID namespace
+            // gets a signal.
+            if (waited_pid == child_pid) {
+                init_exitstatus = status;
+            }
+        }
+        if (!WIFEXITED(init_exitstatus)) {
+            _exit(EXIT_FAILURE);
+        }
+        _exit(WEXITSTATUS(init_exitstatus));
+    }
+    return {};
+}
+
+void SetupStdio(bool stdio_to_kmsg) {
+    auto fd = unique_fd{open("/dev/null", O_RDWR | O_CLOEXEC)};
+    dup2(fd, STDIN_FILENO);
+    if (stdio_to_kmsg) {
+        fd.reset(open("/dev/kmsg_debug", O_WRONLY | O_CLOEXEC));
+        if (fd == -1) fd.reset(open("/dev/null", O_WRONLY | O_CLOEXEC));
+    }
+    dup2(fd, STDOUT_FILENO);
+    dup2(fd, STDERR_FILENO);
+}
+
+void OpenConsole(const std::string& console) {
+    auto fd = unique_fd{open(console.c_str(), O_RDWR | O_CLOEXEC)};
+    if (fd == -1) fd.reset(open("/dev/null", O_RDWR | O_CLOEXEC));
+    ioctl(fd, TIOCSCTTY, 0);
+    dup2(fd, 0);
+    dup2(fd, 1);
+    dup2(fd, 2);
+}
+
+}  // namespace
+
+void Descriptor::Publish() const {
+    auto published_name = name_;
+
+    for (auto& c : published_name) {
+        c = isalnum(c) ? c : '_';
+    }
+
+    int fd = fd_.get();
+    // For safety, the FD is created as CLOEXEC, so that must be removed before publishing.
+    auto fd_flags = fcntl(fd, F_GETFD);
+    fd_flags &= ~FD_CLOEXEC;
+    if (fcntl(fd, F_SETFD, fd_flags) != 0) {
+        PLOG(ERROR) << "Failed to remove CLOEXEC from '" << published_name << "'";
+    }
+
+    std::string val = std::to_string(fd);
+    setenv(published_name.c_str(), val.c_str(), 1);
+}
+
+Result<Descriptor> SocketDescriptor::Create(const std::string& global_context) const {
+    const auto& socket_context = context.empty() ? global_context : context;
+    auto result = CreateSocket(name, type | SOCK_CLOEXEC, passcred, perm, uid, gid, socket_context);
+    if (!result.ok()) {
+        return result.error();
+    }
+
+    return Descriptor(ANDROID_SOCKET_ENV_PREFIX + name, unique_fd(*result));
+}
+
+Result<Descriptor> FileDescriptor::Create() const {
+    int flags = (type == "r") ? O_RDONLY : (type == "w") ? O_WRONLY : O_RDWR;
+
+    // Make sure we do not block on open (eg: devices can chose to block on carrier detect).  Our
+    // intention is never to delay launch of a service for such a condition.  The service can
+    // perform its own blocking on carrier detect.
+    unique_fd fd(TEMP_FAILURE_RETRY(open(name.c_str(), flags | O_NONBLOCK | O_CLOEXEC)));
+
+    if (fd < 0) {
+        return ErrnoError() << "Failed to open file '" << name << "'";
+    }
+
+    // Fixup as we set O_NONBLOCK for open, the intent for fd is to block reads.
+    fcntl(fd, F_SETFL, flags);
+
+    LOG(INFO) << "Opened file '" << name << "', flags " << flags;
+
+    return Descriptor(ANDROID_FILE_ENV_PREFIX + name, std::move(fd));
+}
+
+Result<void> EnterNamespaces(const NamespaceInfo& info, const std::string& name, bool pre_apexd) {
+    for (const auto& [nstype, path] : info.namespaces_to_enter) {
+        if (auto result = EnterNamespace(nstype, path.c_str()); !result.ok()) {
+            return result;
+        }
+    }
+
+#if defined(__ANDROID__)
+    if (pre_apexd) {
+        if (!SwitchToBootstrapMountNamespaceIfNeeded()) {
+            return Error() << "could not enter into the bootstrap mount namespace";
+        }
+    }
+#endif
+
+    if (info.flags & CLONE_NEWNS) {
+        bool remount_proc = info.flags & CLONE_NEWPID;
+        bool remount_sys =
+                std::any_of(info.namespaces_to_enter.begin(), info.namespaces_to_enter.end(),
+                            [](const auto& entry) { return entry.first == CLONE_NEWNET; });
+        if (auto result = SetUpMountNamespace(remount_proc, remount_sys); !result.ok()) {
+            return result;
+        }
+    }
+
+    if (info.flags & CLONE_NEWPID) {
+        // This will fork again to run an init process inside the PID namespace.
+        if (auto result = SetUpPidNamespace(name.c_str()); !result.ok()) {
+            return result;
+        }
+    }
+
+    return {};
+}
+
+Result<void> SetProcessAttributes(const ProcessAttributes& attr) {
+    if (attr.ioprio_class != IoSchedClass_NONE) {
+        if (android_set_ioprio(getpid(), attr.ioprio_class, attr.ioprio_pri)) {
+            PLOG(ERROR) << "failed to set pid " << getpid() << " ioprio=" << attr.ioprio_class
+                        << "," << attr.ioprio_pri;
+        }
+    }
+
+    if (!attr.console.empty()) {
+        setsid();
+        OpenConsole(attr.console);
+    } else {
+        if (setpgid(0, getpid()) == -1) {
+            return ErrnoError() << "setpgid failed";
+        }
+        SetupStdio(attr.stdio_to_kmsg);
+    }
+
+    for (const auto& rlimit : attr.rlimits) {
+        if (setrlimit(rlimit.first, &rlimit.second) == -1) {
+            return ErrnoErrorf("setrlimit({}, {{rlim_cur={}, rlim_max={}}}) failed", rlimit.first,
+                               rlimit.second.rlim_cur, rlimit.second.rlim_max);
+        }
+    }
+
+    if (attr.gid) {
+        if (setgid(attr.gid) != 0) {
+            return ErrnoError() << "setgid failed";
+        }
+    }
+    if (setgroups(attr.supp_gids.size(), const_cast<gid_t*>(&attr.supp_gids[0])) != 0) {
+        return ErrnoError() << "setgroups failed";
+    }
+    if (attr.uid) {
+        if (setuid(attr.uid) != 0) {
+            return ErrnoError() << "setuid failed";
+        }
+    }
+
+    if (attr.priority != 0) {
+        if (setpriority(PRIO_PROCESS, 0, attr.priority) != 0) {
+            return ErrnoError() << "setpriority failed";
+        }
+    }
+    return {};
+}
+
+Result<void> WritePidToFiles(std::vector<std::string>* files) {
+    // See if there were "writepid" instructions to write to files under cpuset path.
+    std::string cpuset_path;
+    if (CgroupGetControllerPath("cpuset", &cpuset_path)) {
+        auto cpuset_predicate = [&cpuset_path](const std::string& path) {
+            return StartsWith(path, cpuset_path + "/");
+        };
+        auto iter = std::find_if(files->begin(), files->end(), cpuset_predicate);
+        if (iter == files->end()) {
+            // There were no "writepid" instructions for cpusets, check if the system default
+            // cpuset is specified to be used for the process.
+            std::string default_cpuset = GetProperty("ro.cpuset.default", "");
+            if (!default_cpuset.empty()) {
+                // Make sure the cpuset name starts and ends with '/'.
+                // A single '/' means the 'root' cpuset.
+                if (default_cpuset.front() != '/') {
+                    default_cpuset.insert(0, 1, '/');
+                }
+                if (default_cpuset.back() != '/') {
+                    default_cpuset.push_back('/');
+                }
+                files->push_back(
+                        StringPrintf("%s%stasks", cpuset_path.c_str(), default_cpuset.c_str()));
+            }
+        }
+    } else {
+        LOG(ERROR) << "cpuset cgroup controller is not mounted!";
+    }
+    std::string pid_str = std::to_string(getpid());
+    for (const auto& file : *files) {
+        if (!WriteStringToFile(pid_str, file)) {
+            return ErrnoError() << "couldn't write " << pid_str << " to " << file;
+        }
+    }
+    return {};
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/service_utils.h b/init/service_utils.h
new file mode 100644
index 0000000..3f1071e
--- /dev/null
+++ b/init/service_utils.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/resource.h>
+#include <sys/types.h>
+
+#include <string>
+#include <vector>
+
+#include <android-base/unique_fd.h>
+#include <cutils/iosched_policy.h>
+
+#include "result.h"
+
+namespace android {
+namespace init {
+
+class Descriptor {
+  public:
+    Descriptor(const std::string& name, android::base::unique_fd fd)
+        : name_(name), fd_(std::move(fd)){};
+
+    void Publish() const;
+
+  private:
+    std::string name_;
+    android::base::unique_fd fd_;
+};
+
+struct SocketDescriptor {
+    std::string name;
+    int type = 0;
+    uid_t uid = 0;
+    gid_t gid = 0;
+    int perm = 0;
+    std::string context;
+    bool passcred = false;
+
+    Result<Descriptor> Create(const std::string& global_context) const;
+};
+
+struct FileDescriptor {
+    std::string name;
+    std::string type;
+
+    Result<Descriptor> Create() const;
+};
+
+struct NamespaceInfo {
+    int flags;
+    // Pair of namespace type, path to name.
+    std::vector<std::pair<int, std::string>> namespaces_to_enter;
+};
+Result<void> EnterNamespaces(const NamespaceInfo& info, const std::string& name, bool pre_apexd);
+
+struct ProcessAttributes {
+    std::string console;
+    IoSchedClass ioprio_class;
+    int ioprio_pri;
+    std::vector<std::pair<int, rlimit>> rlimits;
+    uid_t uid;
+    gid_t gid;
+    std::vector<gid_t> supp_gids;
+    int priority;
+    bool stdio_to_kmsg;
+};
+Result<void> SetProcessAttributes(const ProcessAttributes& attr);
+
+Result<void> WritePidToFiles(std::vector<std::string>* files);
+
+}  // namespace init
+}  // namespace android
diff --git a/init/sigchld_handler.cpp b/init/sigchld_handler.cpp
index 0b03324..9b2c7d9 100644
--- a/init/sigchld_handler.cpp
+++ b/init/sigchld_handler.cpp
@@ -28,28 +28,31 @@
 #include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>
 
-#include "init.h"
-#include "property_service.h"
-#include "service.h"
+#include <thread>
 
-using android::base::StringPrintf;
+#include "init.h"
+#include "service.h"
+#include "service_list.h"
+
 using android::base::boot_clock;
 using android::base::make_scope_guard;
+using android::base::StringPrintf;
+using android::base::Timer;
 
 namespace android {
 namespace init {
 
-static bool ReapOneProcess() {
+static pid_t ReapOneProcess() {
     siginfo_t siginfo = {};
     // This returns a zombie pid or informs us that there are no zombies left to be reaped.
     // It does NOT reap the pid; that is done below.
     if (TEMP_FAILURE_RETRY(waitid(P_ALL, 0, &siginfo, WEXITED | WNOHANG | WNOWAIT)) != 0) {
         PLOG(ERROR) << "waitid failed";
-        return false;
+        return 0;
     }
 
     auto pid = siginfo.si_pid;
-    if (pid == 0) return false;
+    if (pid == 0) return 0;
 
     // At this point we know we have a zombie pid, so we use this scopeguard to reap the pid
     // whenever the function returns from this point forward.
@@ -61,9 +64,7 @@
     std::string wait_string;
     Service* service = nullptr;
 
-    if (PropertyChildReap(pid)) {
-        name = "Async property child";
-    } else if (SubcontextChildReap(pid)) {
+    if (SubcontextChildReap(pid)) {
         name = "Subcontext";
     } else {
         service = ServiceList::GetInstance().FindService(pid, &Service::pid);
@@ -75,6 +76,13 @@
                 auto exec_duration_ms =
                     std::chrono::duration_cast<std::chrono::milliseconds>(exec_duration).count();
                 wait_string = StringPrintf(" waiting took %f seconds", exec_duration_ms / 1000.0f);
+            } else if (service->flags() & SVC_ONESHOT) {
+                auto exec_duration = boot_clock::now() - service->time_started();
+                auto exec_duration_ms =
+                        std::chrono::duration_cast<std::chrono::milliseconds>(exec_duration)
+                                .count();
+                wait_string = StringPrintf(" oneshot service took %f seconds in background",
+                                           exec_duration_ms / 1000.0f);
             }
         } else {
             name = StringPrintf("Untracked pid %d", pid);
@@ -87,7 +95,7 @@
         LOG(INFO) << name << " received signal " << siginfo.si_status << wait_string;
     }
 
-    if (!service) return true;
+    if (!service) return pid;
 
     service->Reap(siginfo);
 
@@ -95,13 +103,33 @@
         ServiceList::GetInstance().RemoveService(*service);
     }
 
-    return true;
+    return pid;
 }
 
 void ReapAnyOutstandingChildren() {
-    while (ReapOneProcess()) {
+    while (ReapOneProcess() != 0) {
     }
 }
 
+void WaitToBeReaped(const std::vector<pid_t>& pids, std::chrono::milliseconds timeout) {
+    Timer t;
+    std::vector<pid_t> alive_pids(pids.begin(), pids.end());
+    while (!alive_pids.empty() && t.duration() < timeout) {
+        pid_t pid;
+        while ((pid = ReapOneProcess()) != 0) {
+            auto it = std::find(alive_pids.begin(), alive_pids.end(), pid);
+            if (it != alive_pids.end()) {
+                alive_pids.erase(it);
+            }
+        }
+        if (alive_pids.empty()) {
+            break;
+        }
+        std::this_thread::sleep_for(50ms);
+    }
+    LOG(INFO) << "Waiting for " << pids.size() << " pids to be reaped took " << t << " with "
+              << alive_pids.size() << " of them still running";
+}
+
 }  // namespace init
 }  // namespace android
diff --git a/init/sigchld_handler.h b/init/sigchld_handler.h
index 30063f2..fac1020 100644
--- a/init/sigchld_handler.h
+++ b/init/sigchld_handler.h
@@ -17,11 +17,16 @@
 #ifndef _INIT_SIGCHLD_HANDLER_H_
 #define _INIT_SIGCHLD_HANDLER_H_
 
+#include <chrono>
+#include <vector>
+
 namespace android {
 namespace init {
 
 void ReapAnyOutstandingChildren();
 
+void WaitToBeReaped(const std::vector<pid_t>& pids, std::chrono::milliseconds timeout);
+
 }  // namespace init
 }  // namespace android
 
diff --git a/init/subcontext.cpp b/init/subcontext.cpp
index 092c51c..f3dd538 100644
--- a/init/subcontext.cpp
+++ b/init/subcontext.cpp
@@ -18,20 +18,23 @@
 
 #include <fcntl.h>
 #include <poll.h>
-#include <sys/socket.h>
 #include <unistd.h>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
+#include <android-base/properties.h>
 #include <android-base/strings.h>
 #include <selinux/android.h>
 
 #include "action.h"
+#include "builtins.h"
+#include "proto_utils.h"
 #include "util.h"
 
-#if defined(__ANDROID__)
+#ifdef INIT_FULL_SOURCES
 #include <android/api-level.h>
 #include "property_service.h"
+#include "selabel.h"
 #include "selinux.h"
 #else
 #include "host_init_stubs.h"
@@ -46,59 +49,15 @@
 
 namespace android {
 namespace init {
-
-const std::string kInitContext = "u:r:init:s0";
-const std::string kVendorContext = "u:r:vendor_init:s0";
-
-const char* const paths_and_secontexts[2][2] = {
-    {"/vendor", kVendorContext.c_str()},
-    {"/odm", kVendorContext.c_str()},
-};
-
 namespace {
 
-constexpr size_t kBufferSize = 4096;
-
-Result<std::string> ReadMessage(int socket) {
-    char buffer[kBufferSize] = {};
-    auto result = TEMP_FAILURE_RETRY(recv(socket, buffer, sizeof(buffer), 0));
-    if (result == 0) {
-        return Error();
-    } else if (result < 0) {
-        return ErrnoError();
-    }
-    return std::string(buffer, result);
-}
-
-template <typename T>
-Result<Success> SendMessage(int socket, const T& message) {
-    std::string message_string;
-    if (!message.SerializeToString(&message_string)) {
-        return Error() << "Unable to serialize message";
-    }
-
-    if (message_string.size() > kBufferSize) {
-        return Error() << "Serialized message too long to send";
-    }
-
-    if (auto result =
-            TEMP_FAILURE_RETRY(send(socket, message_string.c_str(), message_string.size(), 0));
-        result != static_cast<long>(message_string.size())) {
-        return ErrnoError() << "send() failed to send message contents";
-    }
-    return Success();
-}
-
-std::vector<std::pair<std::string, std::string>> properties_to_set;
-
-uint32_t SubcontextPropertySet(const std::string& name, const std::string& value) {
-    properties_to_set.emplace_back(name, value);
-    return 0;
-}
+std::string shutdown_command;
+static bool subcontext_terminated_by_shutdown;
+static std::unique_ptr<Subcontext> subcontext;
 
 class SubcontextProcess {
   public:
-    SubcontextProcess(const KeywordFunctionMap* function_map, std::string context, int init_fd)
+    SubcontextProcess(const BuiltinFunctionMap* function_map, std::string context, int init_fd)
         : function_map_(function_map), context_(std::move(context)), init_fd_(init_fd){};
     void MainLoop();
 
@@ -108,7 +67,7 @@
     void ExpandArgs(const SubcontextCommand::ExpandArgsCommand& expand_args_command,
                     SubcontextReply* reply) const;
 
-    const KeywordFunctionMap* function_map_;
+    const BuiltinFunctionMap* function_map_;
     const std::string context_;
     const int init_fd_;
 };
@@ -121,43 +80,35 @@
         args.emplace_back(string);
     }
 
-    auto map_result = function_map_->FindFunction(args);
-    Result<Success> result;
-    if (!map_result) {
+    auto map_result = function_map_->Find(args);
+    Result<void> result;
+    if (!map_result.ok()) {
         result = Error() << "Cannot find command: " << map_result.error();
     } else {
-        result = RunBuiltinFunction(map_result->second, args, context_);
+        result = RunBuiltinFunction(map_result->function, args, context_);
     }
 
-    for (const auto& [name, value] : properties_to_set) {
-        auto property = reply->add_properties_to_set();
-        property->set_name(name);
-        property->set_value(value);
-    }
-
-    properties_to_set.clear();
-
-    if (result) {
+    if (result.ok()) {
         reply->set_success(true);
     } else {
         auto* failure = reply->mutable_failure();
-        failure->set_error_string(result.error_string());
-        failure->set_error_errno(result.error_errno());
+        failure->set_error_string(result.error().message());
+        failure->set_error_errno(result.error().code());
     }
 }
 
 void SubcontextProcess::ExpandArgs(const SubcontextCommand::ExpandArgsCommand& expand_args_command,
                                    SubcontextReply* reply) const {
     for (const auto& arg : expand_args_command.args()) {
-        auto expanded_prop = std::string{};
-        if (!expand_props(arg, &expanded_prop)) {
+        auto expanded_arg = ExpandProps(arg);
+        if (!expanded_arg.ok()) {
             auto* failure = reply->mutable_failure();
-            failure->set_error_string("Failed to expand '" + arg + "'");
+            failure->set_error_string(expanded_arg.error().message());
             failure->set_error_errno(0);
             return;
         } else {
             auto* expand_args_reply = reply->mutable_expand_args_reply();
-            expand_args_reply->add_expanded_args(expanded_prop);
+            expand_args_reply->add_expanded_args(*expanded_arg);
         }
     }
 }
@@ -176,8 +127,8 @@
         }
 
         auto init_message = ReadMessage(init_fd_);
-        if (!init_message) {
-            if (init_message.error_errno() == 0) {
+        if (!init_message.ok()) {
+            if (init_message.error().code() == 0) {
                 // If the init file descriptor was closed, let's exit quietly. If
                 // this was accidental, init will restart us. If init died, this
                 // avoids calling abort(3) unnecessarily.
@@ -206,7 +157,12 @@
                            << subcontext_command.command_case();
         }
 
-        if (auto result = SendMessage(init_fd_, reply); !result) {
+        if (!shutdown_command.empty()) {
+            reply.set_trigger_shutdown(shutdown_command);
+            shutdown_command.clear();
+        }
+
+        if (auto result = SendMessage(init_fd_, reply); !result.ok()) {
             LOG(FATAL) << "Failed to send message to init: " << result.error();
         }
     }
@@ -214,7 +170,7 @@
 
 }  // namespace
 
-int SubcontextMain(int argc, char** argv, const KeywordFunctionMap* function_map) {
+int SubcontextMain(int argc, char** argv, const BuiltinFunctionMap* function_map) {
     if (argc < 4) LOG(FATAL) << "Fewer than 4 args specified to subcontext (" << argc << ")";
 
     auto context = std::string(argv[2]);
@@ -222,7 +178,7 @@
 
     SelabelInitialize();
 
-    property_set = SubcontextPropertySet;
+    trigger_shutdown = [](const std::string& command) { shutdown_command = command; };
 
     auto subcontext_process = SubcontextProcess(function_map, context, init_fd);
     subcontext_process.MainLoop();
@@ -245,13 +201,17 @@
 
         // We explicitly do not use O_CLOEXEC here, such that we can reference this FD by number
         // in the subcontext process after we exec.
-        int child_fd = dup(subcontext_socket);
+        int child_fd = dup(subcontext_socket);  // NOLINT(android-cloexec-dup)
         if (child_fd < 0) {
             PLOG(FATAL) << "Could not dup child_fd";
         }
 
-        if (setexeccon(context_.c_str()) < 0) {
-            PLOG(FATAL) << "Could not set execcon for '" << context_ << "'";
+        // We don't switch contexts if we're running the unit tests.  We don't use std::optional,
+        // since we still need a real context string to pass to the builtin functions.
+        if (context_ != kTestContext) {
+            if (setexeccon(context_.c_str()) < 0) {
+                PLOG(FATAL) << "Could not set execcon for '" << context_ << "'";
+            }
         }
 
         auto init_path = GetExecutablePath();
@@ -278,14 +238,23 @@
     Fork();
 }
 
+bool Subcontext::PathMatchesSubcontext(const std::string& path) {
+    for (const auto& prefix : path_prefixes_) {
+        if (StartsWith(path, prefix)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 Result<SubcontextReply> Subcontext::TransmitMessage(const SubcontextCommand& subcontext_command) {
-    if (auto result = SendMessage(socket_, subcontext_command); !result) {
+    if (auto result = SendMessage(socket_, subcontext_command); !result.ok()) {
         Restart();
         return ErrnoError() << "Failed to send message to subcontext";
     }
 
     auto subcontext_message = ReadMessage(socket_);
-    if (!subcontext_message) {
+    if (!subcontext_message.ok()) {
         Restart();
         return Error() << "Failed to receive result from subcontext: " << subcontext_message.error();
     }
@@ -295,29 +264,25 @@
         Restart();
         return Error() << "Unable to parse message from subcontext";
     }
+
+    if (subcontext_reply.has_trigger_shutdown()) {
+        trigger_shutdown(subcontext_reply.trigger_shutdown());
+    }
+
     return subcontext_reply;
 }
 
-Result<Success> Subcontext::Execute(const std::vector<std::string>& args) {
+Result<void> Subcontext::Execute(const std::vector<std::string>& args) {
     auto subcontext_command = SubcontextCommand();
     std::copy(
         args.begin(), args.end(),
         RepeatedPtrFieldBackInserter(subcontext_command.mutable_execute_command()->mutable_args()));
 
     auto subcontext_reply = TransmitMessage(subcontext_command);
-    if (!subcontext_reply) {
+    if (!subcontext_reply.ok()) {
         return subcontext_reply.error();
     }
 
-    for (const auto& property : subcontext_reply->properties_to_set()) {
-        ucred cr = {.pid = pid_, .uid = 0, .gid = 0};
-        std::string error;
-        if (HandlePropertySet(property.name(), property.value(), context_, cr, &error) != 0) {
-            LOG(ERROR) << "Subcontext init could not set '" << property.name() << "' to '"
-                       << property.value() << "': " << error;
-        }
-    }
-
     if (subcontext_reply->reply_case() == SubcontextReply::kFailure) {
         auto& failure = subcontext_reply->failure();
         return ResultError(failure.error_string(), failure.error_errno());
@@ -328,7 +293,7 @@
                        << subcontext_reply->reply_case();
     }
 
-    return Success();
+    return {};
 }
 
 Result<std::vector<std::string>> Subcontext::ExpandArgs(const std::vector<std::string>& args) {
@@ -338,7 +303,7 @@
                   subcontext_command.mutable_expand_args_command()->mutable_args()));
 
     auto subcontext_reply = TransmitMessage(subcontext_command);
-    if (!subcontext_reply) {
+    if (!subcontext_reply.ok()) {
         return subcontext_reply.error();
     }
 
@@ -360,35 +325,30 @@
     return expanded_args;
 }
 
-static std::vector<Subcontext> subcontexts;
-static bool shutting_down;
-
-std::vector<Subcontext>* InitializeSubcontexts() {
+void InitializeSubcontext() {
     if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_P__) {
-        for (const auto& [path_prefix, secontext] : paths_and_secontexts) {
-            subcontexts.emplace_back(path_prefix, secontext);
-        }
+        subcontext.reset(
+                new Subcontext(std::vector<std::string>{"/vendor", "/odm"}, kVendorContext));
     }
-    return &subcontexts;
+}
+
+Subcontext* GetSubcontext() {
+    return subcontext.get();
 }
 
 bool SubcontextChildReap(pid_t pid) {
-    for (auto& subcontext : subcontexts) {
-        if (subcontext.pid() == pid) {
-            if (!shutting_down) {
-                subcontext.Restart();
-            }
-            return true;
+    if (subcontext->pid() == pid) {
+        if (!subcontext_terminated_by_shutdown) {
+            subcontext->Restart();
         }
+        return true;
     }
     return false;
 }
 
 void SubcontextTerminate() {
-    shutting_down = true;
-    for (auto& subcontext : subcontexts) {
-        kill(subcontext.pid(), SIGTERM);
-    }
+    subcontext_terminated_by_shutdown = true;
+    kill(subcontext->pid(), SIGTERM);
 }
 
 }  // namespace init
diff --git a/init/subcontext.h b/init/subcontext.h
index 628fd50..788d3be 100644
--- a/init/subcontext.h
+++ b/init/subcontext.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_SUBCONTEXT_H
-#define _INIT_SUBCONTEXT_H
+#pragma once
 
 #include <signal.h>
 
@@ -31,22 +30,22 @@
 namespace android {
 namespace init {
 
-extern const std::string kInitContext;
-extern const std::string kVendorContext;
-extern const char* const paths_and_secontexts[2][2];
+static constexpr const char kInitContext[] = "u:r:init:s0";
+static constexpr const char kVendorContext[] = "u:r:vendor_init:s0";
+static constexpr const char kTestContext[] = "test-test-test";
 
 class Subcontext {
   public:
-    Subcontext(std::string path_prefix, std::string context)
-        : path_prefix_(std::move(path_prefix)), context_(std::move(context)), pid_(0) {
+    Subcontext(std::vector<std::string> path_prefixes, std::string context)
+        : path_prefixes_(std::move(path_prefixes)), context_(std::move(context)), pid_(0) {
         Fork();
     }
 
-    Result<Success> Execute(const std::vector<std::string>& args);
+    Result<void> Execute(const std::vector<std::string>& args);
     Result<std::vector<std::string>> ExpandArgs(const std::vector<std::string>& args);
     void Restart();
+    bool PathMatchesSubcontext(const std::string& path);
 
-    const std::string& path_prefix() const { return path_prefix_; }
     const std::string& context() const { return context_; }
     pid_t pid() const { return pid_; }
 
@@ -54,18 +53,17 @@
     void Fork();
     Result<SubcontextReply> TransmitMessage(const SubcontextCommand& subcontext_command);
 
-    std::string path_prefix_;
+    std::vector<std::string> path_prefixes_;
     std::string context_;
     pid_t pid_;
     android::base::unique_fd socket_;
 };
 
-int SubcontextMain(int argc, char** argv, const KeywordFunctionMap* function_map);
-std::vector<Subcontext>* InitializeSubcontexts();
+int SubcontextMain(int argc, char** argv, const BuiltinFunctionMap* function_map);
+void InitializeSubcontext();
+Subcontext* GetSubcontext();
 bool SubcontextChildReap(pid_t pid);
 void SubcontextTerminate();
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/subcontext.proto b/init/subcontext.proto
index c31f4fb..068c7ce 100644
--- a/init/subcontext.proto
+++ b/init/subcontext.proto
@@ -39,9 +39,5 @@
         ExpandArgsReply expand_args_reply = 3;
     }
 
-    message PropertyToSet {
-        optional string name = 1;
-        optional string value = 2;
-    }
-    repeated PropertyToSet properties_to_set = 4;
+    optional string trigger_shutdown = 4;
 }
\ No newline at end of file
diff --git a/init/subcontext_benchmark.cpp b/init/subcontext_benchmark.cpp
index eae03e3..ccef2f3 100644
--- a/init/subcontext_benchmark.cpp
+++ b/init/subcontext_benchmark.cpp
@@ -19,8 +19,6 @@
 #include <benchmark/benchmark.h>
 #include <selinux/selinux.h>
 
-#include "test_function_map.h"
-
 namespace android {
 namespace init {
 
@@ -35,11 +33,11 @@
         return;
     }
 
-    auto subcontext = Subcontext("path", context);
+    auto subcontext = Subcontext({"path"}, context);
     free(context);
 
     while (state.KeepRunning()) {
-        subcontext.Execute(std::vector<std::string>{"return_success"}).IgnoreError();
+        subcontext.Execute(std::vector<std::string>{"return_success"});
     }
 
     if (subcontext.pid() > 0) {
@@ -50,11 +48,11 @@
 
 BENCHMARK(BenchmarkSuccess);
 
-TestFunctionMap BuildTestFunctionMap() {
-    TestFunctionMap test_function_map;
-    test_function_map.Add("return_success", 0, 0, true,
-                          [](const BuiltinArguments& args) { return Success(); });
-
+BuiltinFunctionMap BuildTestFunctionMap() {
+    auto function = [](const BuiltinArguments& args) { return Result<void>{}; };
+    BuiltinFunctionMap test_function_map = {
+            {"return_success", {0, 0, {true, function}}},
+    };
     return test_function_map;
 }
 
diff --git a/init/subcontext_test.cpp b/init/subcontext_test.cpp
index 230203a..ee765a7 100644
--- a/init/subcontext_test.cpp
+++ b/init/subcontext_test.cpp
@@ -26,7 +26,7 @@
 #include <selinux/selinux.h>
 
 #include "builtin_arguments.h"
-#include "test_function_map.h"
+#include "util.h"
 
 using namespace std::literals;
 
@@ -39,24 +39,12 @@
 namespace android {
 namespace init {
 
-// I would use test fixtures, but I cannot skip the test if not root with them, so instead we have
-// this test runner.
 template <typename F>
 void RunTest(F&& test_function) {
-    if (getuid() != 0) {
-        GTEST_LOG_(INFO) << "Skipping test, must be run as root.";
-        return;
-    }
-
-    char* context;
-    ASSERT_EQ(0, getcon(&context));
-    auto context_string = std::string(context);
-    free(context);
-
-    auto subcontext = Subcontext("dummy_path", context_string);
+    auto subcontext = Subcontext({"dummy_path"}, kTestContext);
     ASSERT_NE(0, subcontext.pid());
 
-    test_function(subcontext, context_string);
+    test_function(subcontext);
 
     if (subcontext.pid() > 0) {
         kill(subcontext.pid(), SIGTERM);
@@ -65,11 +53,11 @@
 }
 
 TEST(subcontext, CheckDifferentPid) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    RunTest([](auto& subcontext) {
         auto result = subcontext.Execute(std::vector<std::string>{"return_pids_as_error"});
-        ASSERT_FALSE(result);
+        ASSERT_FALSE(result.ok());
 
-        auto pids = Split(result.error_string(), " ");
+        auto pids = Split(result.error().message(), " ");
         ASSERT_EQ(2U, pids.size());
         auto our_pid = std::to_string(getpid());
         EXPECT_NE(our_pid, pids[0]);
@@ -78,7 +66,12 @@
 }
 
 TEST(subcontext, SetProp) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    if (getuid() != 0) {
+        GTEST_SKIP() << "Skipping test, must be run as root.";
+        return;
+    }
+
+    RunTest([](auto& subcontext) {
         SetProperty("init.test.subcontext", "fail");
         WaitForProperty("init.test.subcontext", "fail");
 
@@ -88,14 +81,14 @@
             "success",
         };
         auto result = subcontext.Execute(args);
-        ASSERT_TRUE(result) << result.error();
+        ASSERT_RESULT_OK(result);
 
         EXPECT_TRUE(WaitForProperty("init.test.subcontext", "success", 10s));
     });
 }
 
 TEST(subcontext, MultipleCommands) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    RunTest([](auto& subcontext) {
         auto first_pid = subcontext.pid();
 
         auto expected_words = std::vector<std::string>{
@@ -111,47 +104,59 @@
                 word,
             };
             auto result = subcontext.Execute(args);
-            ASSERT_TRUE(result) << result.error();
+            ASSERT_RESULT_OK(result);
         }
 
         auto result = subcontext.Execute(std::vector<std::string>{"return_words_as_error"});
-        ASSERT_FALSE(result);
-        EXPECT_EQ(Join(expected_words, " "), result.error_string());
+        ASSERT_FALSE(result.ok());
+        EXPECT_EQ(Join(expected_words, " "), result.error().message());
         EXPECT_EQ(first_pid, subcontext.pid());
     });
 }
 
 TEST(subcontext, RecoverAfterAbort) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    RunTest([](auto& subcontext) {
         auto first_pid = subcontext.pid();
 
         auto result = subcontext.Execute(std::vector<std::string>{"cause_log_fatal"});
-        ASSERT_FALSE(result);
+        ASSERT_FALSE(result.ok());
 
         auto result2 = subcontext.Execute(std::vector<std::string>{"generate_sane_error"});
-        ASSERT_FALSE(result2);
-        EXPECT_EQ("Sane error!", result2.error_string());
+        ASSERT_FALSE(result2.ok());
+        EXPECT_EQ("Sane error!", result2.error().message());
         EXPECT_NE(subcontext.pid(), first_pid);
     });
 }
 
 TEST(subcontext, ContextString) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    RunTest([](auto& subcontext) {
         auto result = subcontext.Execute(std::vector<std::string>{"return_context_as_error"});
-        ASSERT_FALSE(result);
-        ASSERT_EQ(context_string, result.error_string());
+        ASSERT_FALSE(result.ok());
+        ASSERT_EQ(kTestContext, result.error().message());
     });
 }
 
+TEST(subcontext, TriggerShutdown) {
+    static constexpr const char kTestShutdownCommand[] = "reboot,test-shutdown-command";
+    static std::string trigger_shutdown_command;
+    trigger_shutdown = [](const std::string& command) { trigger_shutdown_command = command; };
+    RunTest([](auto& subcontext) {
+        auto result = subcontext.Execute(
+                std::vector<std::string>{"trigger_shutdown", kTestShutdownCommand});
+        ASSERT_RESULT_OK(result);
+    });
+    EXPECT_EQ(kTestShutdownCommand, trigger_shutdown_command);
+}
+
 TEST(subcontext, ExpandArgs) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    RunTest([](auto& subcontext) {
         auto args = std::vector<std::string>{
             "first",
             "${ro.hardware}",
             "$$third",
         };
         auto result = subcontext.ExpandArgs(args);
-        ASSERT_TRUE(result) << result.error();
+        ASSERT_RESULT_OK(result);
         ASSERT_EQ(3U, result->size());
         EXPECT_EQ(args[0], result->at(0));
         EXPECT_EQ(GetProperty("ro.hardware", ""), result->at(1));
@@ -160,69 +165,79 @@
 }
 
 TEST(subcontext, ExpandArgsFailure) {
-    RunTest([](auto& subcontext, auto& context_string) {
+    RunTest([](auto& subcontext) {
         auto args = std::vector<std::string>{
             "first",
             "${",
         };
         auto result = subcontext.ExpandArgs(args);
-        ASSERT_FALSE(result);
-        EXPECT_EQ("Failed to expand '" + args[1] + "'", result.error_string());
+        ASSERT_FALSE(result.ok());
+        EXPECT_EQ("unexpected end of string in '" + args[1] + "', looking for }",
+                  result.error().message());
     });
 }
 
-TestFunctionMap BuildTestFunctionMap() {
-    TestFunctionMap test_function_map;
+BuiltinFunctionMap BuildTestFunctionMap() {
     // For CheckDifferentPid
-    test_function_map.Add("return_pids_as_error", 0, 0, true,
-                          [](const BuiltinArguments& args) -> Result<Success> {
-                              return Error() << getpid() << " " << getppid();
-                          });
+    auto do_return_pids_as_error = [](const BuiltinArguments& args) -> Result<void> {
+        return Error() << getpid() << " " << getppid();
+    };
 
     // For SetProp
-    test_function_map.Add("setprop", 2, 2, true, [](const BuiltinArguments& args) {
+    auto do_setprop = [](const BuiltinArguments& args) {
         android::base::SetProperty(args[1], args[2]);
-        return Success();
-    });
+        return Result<void>{};
+    };
 
     // For MultipleCommands
     // Using a shared_ptr to extend lifetime of words to both lambdas
     auto words = std::make_shared<std::vector<std::string>>();
-    test_function_map.Add("add_word", 1, 1, true, [words](const BuiltinArguments& args) {
+    auto do_add_word = [words](const BuiltinArguments& args) {
         words->emplace_back(args[1]);
-        return Success();
-    });
-    test_function_map.Add("return_words_as_error", 0, 0, true,
-                          [words](const BuiltinArguments& args) -> Result<Success> {
-                              return Error() << Join(*words, " ");
-                          });
+        return Result<void>{};
+    };
+    auto do_return_words_as_error = [words](const BuiltinArguments& args) -> Result<void> {
+        return Error() << Join(*words, " ");
+    };
 
     // For RecoverAfterAbort
-    test_function_map.Add("cause_log_fatal", 0, 0, true,
-                          [](const BuiltinArguments& args) -> Result<Success> {
-                              return Error() << std::string(4097, 'f');
-                          });
-    test_function_map.Add(
-        "generate_sane_error", 0, 0, true,
-        [](const BuiltinArguments& args) -> Result<Success> { return Error() << "Sane error!"; });
+    auto do_cause_log_fatal = [](const BuiltinArguments& args) -> Result<void> {
+        return Error() << std::string(4097, 'f');
+    };
+    auto do_generate_sane_error = [](const BuiltinArguments& args) -> Result<void> {
+        return Error() << "Sane error!";
+    };
 
     // For ContextString
-    test_function_map.Add(
-        "return_context_as_error", 0, 0, true,
-        [](const BuiltinArguments& args) -> Result<Success> { return Error() << args.context; });
+    auto do_return_context_as_error = [](const BuiltinArguments& args) -> Result<void> {
+        return Error() << args.context;
+    };
 
+    auto do_trigger_shutdown = [](const BuiltinArguments& args) -> Result<void> {
+        trigger_shutdown(args[1]);
+        return {};
+    };
+
+    // clang-format off
+    BuiltinFunctionMap test_function_map = {
+        {"return_pids_as_error",        {0,     0,      {true,  do_return_pids_as_error}}},
+        {"setprop",                     {2,     2,      {true,  do_setprop}}},
+        {"add_word",                    {1,     1,      {true,  do_add_word}}},
+        {"return_words_as_error",       {0,     0,      {true,  do_return_words_as_error}}},
+        {"cause_log_fatal",             {0,     0,      {true,  do_cause_log_fatal}}},
+        {"generate_sane_error",         {0,     0,      {true,  do_generate_sane_error}}},
+        {"return_context_as_error",     {0,     0,      {true,  do_return_context_as_error}}},
+        {"trigger_shutdown",            {1,     1,      {true,  do_trigger_shutdown}}},
+    };
+    // clang-format on
     return test_function_map;
 }
 
 }  // namespace init
 }  // namespace android
 
-int main(int argc, char** argv) {
-    if (argc > 1 && !strcmp(basename(argv[1]), "subcontext")) {
-        auto test_function_map = android::init::BuildTestFunctionMap();
-        return android::init::SubcontextMain(argc, argv, &test_function_map);
-    }
-
-    testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
+// init_test.cpp contains the main entry point for all init tests.
+int SubcontextTestChildMain(int argc, char** argv) {
+    auto test_function_map = android::init::BuildTestFunctionMap();
+    return android::init::SubcontextMain(argc, argv, &test_function_map);
 }
diff --git a/init/sysprop/Android.bp b/init/sysprop/Android.bp
new file mode 100644
index 0000000..7582875
--- /dev/null
+++ b/init/sysprop/Android.bp
@@ -0,0 +1,7 @@
+sysprop_library {
+  name: "com.android.sysprop.init",
+  srcs: ["InitProperties.sysprop"],
+  property_owner: "Platform",
+  api_packages: ["android.sysprop"],
+  recovery_available: true,
+}
diff --git a/init/sysprop/InitProperties.sysprop b/init/sysprop/InitProperties.sysprop
new file mode 100644
index 0000000..24c2434
--- /dev/null
+++ b/init/sysprop/InitProperties.sysprop
@@ -0,0 +1,36 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+owner: Platform
+module: "android.sysprop.InitProperties"
+
+# Serves as a signal to all processes that userspace reboot is happening.
+prop {
+    api_name: "userspace_reboot_in_progress"
+    type: Boolean
+    scope: Public
+    access: ReadWrite
+    prop_name: "sys.init.userspace_reboot.in_progress"
+    integer_as_bool: true
+}
+
+# Shows whenever the device supports userspace reboot or not.
+prop {
+    api_name: "is_userspace_reboot_supported"
+    type: Boolean
+    scope: Public
+    access: Readonly
+    prop_name: "init.userspace_reboot.is_supported"
+    integer_as_bool: true
+}
diff --git a/init/sysprop/api/com.android.sysprop.init-current.txt b/init/sysprop/api/com.android.sysprop.init-current.txt
new file mode 100644
index 0000000..01f4e9a
--- /dev/null
+++ b/init/sysprop/api/com.android.sysprop.init-current.txt
@@ -0,0 +1,14 @@
+props {
+  module: "android.sysprop.InitProperties"
+  prop {
+    api_name: "is_userspace_reboot_supported"
+    prop_name: "init.userspace_reboot.is_supported"
+    integer_as_bool: true
+  }
+  prop {
+    api_name: "userspace_reboot_in_progress"
+    access: ReadWrite
+    prop_name: "sys.init.userspace_reboot.in_progress"
+    integer_as_bool: true
+  }
+}
diff --git a/init/sysprop/api/com.android.sysprop.init-latest.txt b/init/sysprop/api/com.android.sysprop.init-latest.txt
new file mode 100644
index 0000000..c835b95
--- /dev/null
+++ b/init/sysprop/api/com.android.sysprop.init-latest.txt
@@ -0,0 +1,9 @@
+props {
+  module: "android.sysprop.InitProperties"
+  prop {
+    api_name: "userspace_reboot_in_progress"
+    scope: Public
+    prop_name: "sys.init.userspace_reboot.in_progress"
+    integer_as_bool: true
+  }
+}
diff --git a/init/test_function_map.h b/init/test_function_map.h
deleted file mode 100644
index 583df1a..0000000
--- a/init/test_function_map.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _INIT_TEST_FUNCTION_MAP_H
-#define _INIT_TEST_FUNCTION_MAP_H
-
-#include <string>
-#include <vector>
-
-#include "builtin_arguments.h"
-#include "keyword_map.h"
-
-namespace android {
-namespace init {
-
-class TestFunctionMap : public KeywordFunctionMap {
-  public:
-    // Helper for argument-less functions
-    using BuiltinFunctionNoArgs = std::function<void(void)>;
-    void Add(const std::string& name, const BuiltinFunctionNoArgs function) {
-        Add(name, 0, 0, false, [function](const BuiltinArguments&) {
-            function();
-            return Success();
-        });
-    }
-
-    void Add(const std::string& name, std::size_t min_parameters, std::size_t max_parameters,
-             bool run_in_subcontext, const BuiltinFunction function) {
-        builtin_functions_[name] =
-            make_tuple(min_parameters, max_parameters, make_pair(run_in_subcontext, function));
-    }
-
-  private:
-    Map builtin_functions_ = {};
-
-    const Map& map() const override { return builtin_functions_; }
-};
-
-}  // namespace init
-}  // namespace android
-
-#endif
diff --git a/init/test_utils/include/init-test-utils/service_utils.h b/init/test_utils/include/init-test-utils/service_utils.h
new file mode 100644
index 0000000..f9366ea
--- /dev/null
+++ b/init/test_utils/include/init-test-utils/service_utils.h
@@ -0,0 +1,40 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <map>
+#include <set>
+
+#include <android-base/result.h>
+
+namespace android {
+namespace init {
+
+// this is service name -> interface declaration
+//
+// So, for:
+//     service foo ..
+//         interface aidl baz
+//         interface android.hardware.foo@1.0 IFoo
+//
+// We have:
+//     foo -> { aidl/baz, android.hardware.foo@1.0/IFoo }
+using ServiceInterfacesMap = std::map<std::string, std::set<std::string>>;
+android::base::Result<ServiceInterfacesMap> GetOnDeviceServiceInterfacesMap();
+
+}  // namespace init
+}  // namespace android
diff --git a/init/test_utils/service_utils.cpp b/init/test_utils/service_utils.cpp
new file mode 100644
index 0000000..6426ed9
--- /dev/null
+++ b/init/test_utils/service_utils.cpp
@@ -0,0 +1,56 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <string>
+
+#include <android-base/logging.h>
+
+#include "../parser.h"
+#include "../service.h"
+#include "../service_list.h"
+#include "../service_parser.h"
+#include "include/init-test-utils/service_utils.h"
+
+namespace android {
+namespace init {
+
+android::base::Result<ServiceInterfacesMap> GetOnDeviceServiceInterfacesMap() {
+    ServiceList& service_list = ServiceList::GetInstance();
+    Parser parser;
+    parser.AddSectionParser("service",
+                            std::make_unique<ServiceParser>(&service_list, nullptr, std::nullopt));
+    for (const auto& location : {
+                 "/init.rc",
+                 "/system/etc/init",
+                 "/system_ext/etc/init",
+                 "/product/etc/init",
+                 "/odm/etc/init",
+                 "/vendor/etc/init",
+         }) {
+        parser.ParseConfig(location);
+    }
+
+    ServiceInterfacesMap result;
+    for (const auto& service : service_list) {
+        // Create an entry for all services, including services that may not
+        // have any declared interfaces.
+        result[service->name()] = service->interfaces();
+    }
+    return result;
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/tokenizer_test.cpp b/init/tokenizer_test.cpp
index acfc7c7..6b31683 100644
--- a/init/tokenizer_test.cpp
+++ b/init/tokenizer_test.cpp
@@ -46,6 +46,7 @@
                 return;
             case T_NEWLINE:
                 tokens.emplace_back(std::move(current_line));
+                current_line.clear();
                 break;
             case T_TEXT:
                 current_line.emplace_back(state.text);
diff --git a/init/uevent_listener.cpp b/init/uevent_listener.cpp
index 62cd2be..d8d9b36 100644
--- a/init/uevent_listener.cpp
+++ b/init/uevent_listener.cpp
@@ -100,7 +100,7 @@
     int n = uevent_kernel_multicast_recv(device_fd_, msg, UEVENT_MSG_LEN);
     if (n <= 0) {
         if (errno != EAGAIN && errno != EWOULDBLOCK) {
-            LOG(ERROR) << "Error reading from Uevent Fd";
+            PLOG(ERROR) << "Error reading from Uevent Fd";
         }
         return false;
     }
@@ -131,7 +131,7 @@
                                                        const ListenerCallback& callback) const {
     int dfd = dirfd(d);
 
-    int fd = openat(dfd, "uevent", O_WRONLY);
+    int fd = openat(dfd, "uevent", O_WRONLY | O_CLOEXEC);
     if (fd >= 0) {
         write(fd, "add\n", 4);
         close(fd);
@@ -146,7 +146,7 @@
     while ((de = readdir(d)) != nullptr) {
         if (de->d_type != DT_DIR || de->d_name[0] == '.') continue;
 
-        fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
+        fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
         if (fd < 0) continue;
 
         std::unique_ptr<DIR, decltype(&closedir)> d2(fdopendir(fd), closedir);
@@ -171,7 +171,7 @@
     return RegenerateUeventsForDir(d.get(), callback);
 }
 
-static const char* kRegenerationPaths[] = {"/sys/class", "/sys/block", "/sys/devices"};
+static const char* kRegenerationPaths[] = {"/sys/devices"};
 
 void UeventListener::RegenerateUevents(const ListenerCallback& callback) const {
     for (const auto path : kRegenerationPaths) {
diff --git a/init/ueventd.cpp b/init/ueventd.cpp
index 399ea4c..d2b503b 100644
--- a/init/ueventd.cpp
+++ b/init/ueventd.cpp
@@ -17,12 +17,15 @@
 #include "ueventd.h"
 
 #include <ctype.h>
+#include <dirent.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 #include <set>
 #include <thread>
@@ -37,6 +40,7 @@
 #include "devices.h"
 #include "firmware_handler.h"
 #include "modalias_handler.h"
+#include "selabel.h"
 #include "selinux.h"
 #include "uevent_handler.h"
 #include "uevent_listener.h"
@@ -109,10 +113,12 @@
 class ColdBoot {
   public:
     ColdBoot(UeventListener& uevent_listener,
-             std::vector<std::unique_ptr<UeventHandler>>& uevent_handlers)
+             std::vector<std::unique_ptr<UeventHandler>>& uevent_handlers,
+             bool enable_parallel_restorecon)
         : uevent_listener_(uevent_listener),
           uevent_handlers_(uevent_handlers),
-          num_handler_subprocesses_(std::thread::hardware_concurrency() ?: 4) {}
+          num_handler_subprocesses_(std::thread::hardware_concurrency() ?: 4),
+          enable_parallel_restorecon_(enable_parallel_restorecon) {}
 
     void Run();
 
@@ -120,16 +126,21 @@
     void UeventHandlerMain(unsigned int process_num, unsigned int total_processes);
     void RegenerateUevents();
     void ForkSubProcesses();
-    void DoRestoreCon();
     void WaitForSubProcesses();
+    void RestoreConHandler(unsigned int process_num, unsigned int total_processes);
+    void GenerateRestoreCon(const std::string& directory);
 
     UeventListener& uevent_listener_;
     std::vector<std::unique_ptr<UeventHandler>>& uevent_handlers_;
 
     unsigned int num_handler_subprocesses_;
+    bool enable_parallel_restorecon_;
+
     std::vector<Uevent> uevent_queue_;
 
     std::set<pid_t> subprocess_pids_;
+
+    std::vector<std::string> restorecon_queue_;
 };
 
 void ColdBoot::UeventHandlerMain(unsigned int process_num, unsigned int total_processes) {
@@ -140,12 +151,40 @@
             uevent_handler->HandleUevent(uevent);
         }
     }
-    _exit(EXIT_SUCCESS);
+}
+
+void ColdBoot::RestoreConHandler(unsigned int process_num, unsigned int total_processes) {
+    for (unsigned int i = process_num; i < restorecon_queue_.size(); i += total_processes) {
+        auto& dir = restorecon_queue_[i];
+
+        selinux_android_restorecon(dir.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE);
+    }
+}
+
+void ColdBoot::GenerateRestoreCon(const std::string& directory) {
+    std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(directory.c_str()), &closedir);
+
+    if (!dir) return;
+
+    struct dirent* dent;
+    while ((dent = readdir(dir.get())) != NULL) {
+        if (strcmp(dent->d_name, ".") == 0 || strcmp(dent->d_name, "..") == 0) continue;
+
+        struct stat st;
+        if (fstatat(dirfd(dir.get()), dent->d_name, &st, 0) == -1) continue;
+
+        if (S_ISDIR(st.st_mode)) {
+            std::string fullpath = directory + "/" + dent->d_name;
+            if (fullpath != "/sys/devices") {
+                restorecon_queue_.emplace_back(fullpath);
+            }
+        }
+    }
 }
 
 void ColdBoot::RegenerateUevents() {
     uevent_listener_.RegenerateUevents([this](const Uevent& uevent) {
-        uevent_queue_.emplace_back(std::move(uevent));
+        uevent_queue_.emplace_back(uevent);
         return ListenerAction::kContinue;
     });
 }
@@ -159,16 +198,16 @@
 
         if (pid == 0) {
             UeventHandlerMain(i, num_handler_subprocesses_);
+            if (enable_parallel_restorecon_) {
+                RestoreConHandler(i, num_handler_subprocesses_);
+            }
+            _exit(EXIT_SUCCESS);
         }
 
         subprocess_pids_.emplace(pid);
     }
 }
 
-void ColdBoot::DoRestoreCon() {
-    selinux_android_restorecon("/sys", SELINUX_ANDROID_RESTORECON_RECURSE);
-}
-
 void ColdBoot::WaitForSubProcesses() {
     // Treat subprocesses that crash or get stuck the same as if ueventd itself has crashed or gets
     // stuck.
@@ -207,13 +246,23 @@
 
     RegenerateUevents();
 
+    if (enable_parallel_restorecon_) {
+        selinux_android_restorecon("/sys", 0);
+        selinux_android_restorecon("/sys/devices", 0);
+        GenerateRestoreCon("/sys");
+        // takes long time for /sys/devices, parallelize it
+        GenerateRestoreCon("/sys/devices");
+    }
+
     ForkSubProcesses();
 
-    DoRestoreCon();
+    if (!enable_parallel_restorecon_) {
+        selinux_android_restorecon("/sys", SELINUX_ANDROID_RESTORECON_RECURSE);
+    }
 
     WaitForSubProcesses();
 
-    close(open(COLDBOOT_DONE, O_WRONLY | O_CREAT | O_CLOEXEC, 0000));
+    android::base::SetProperty(kColdBootDoneProp, "true");
     LOG(INFO) << "Coldboot took " << cold_boot_timer.duration().count() / 1000.0f << " seconds";
 }
 
@@ -239,7 +288,7 @@
     // TODO: cleanup platform ueventd.rc to remove vendor specific device node entries (b/34968103)
     auto hardware = android::base::GetProperty("ro.hardware", "");
 
-    auto ueventd_configuration = ParseConfig({"/ueventd.rc", "/vendor/ueventd.rc",
+    auto ueventd_configuration = ParseConfig({"/system/etc/ueventd.rc", "/vendor/ueventd.rc",
                                               "/odm/ueventd.rc", "/ueventd." + hardware + ".rc"});
 
     uevent_handlers.emplace_back(std::make_unique<DeviceHandler>(
@@ -247,15 +296,18 @@
             std::move(ueventd_configuration.sysfs_permissions),
             std::move(ueventd_configuration.subsystems), android::fs_mgr::GetBootDevices(), true));
     uevent_handlers.emplace_back(std::make_unique<FirmwareHandler>(
-            std::move(ueventd_configuration.firmware_directories)));
+            std::move(ueventd_configuration.firmware_directories),
+            std::move(ueventd_configuration.external_firmware_handlers)));
 
     if (ueventd_configuration.enable_modalias_handling) {
-        uevent_handlers.emplace_back(std::make_unique<ModaliasHandler>());
+        std::vector<std::string> base_paths = {"/odm/lib/modules", "/vendor/lib/modules"};
+        uevent_handlers.emplace_back(std::make_unique<ModaliasHandler>(base_paths));
     }
     UeventListener uevent_listener(ueventd_configuration.uevent_socket_rcvbuf_size);
 
-    if (access(COLDBOOT_DONE, F_OK) != 0) {
-        ColdBoot cold_boot(uevent_listener, uevent_handlers);
+    if (!android::base::GetBoolProperty(kColdBootDoneProp, false)) {
+        ColdBoot cold_boot(uevent_listener, uevent_handlers,
+                           ueventd_configuration.enable_parallel_restorecon);
         cold_boot.Run();
     }
 
diff --git a/init/ueventd_parser.cpp b/init/ueventd_parser.cpp
index aac3fe5..09dce44 100644
--- a/init/ueventd_parser.cpp
+++ b/init/ueventd_parser.cpp
@@ -29,9 +29,9 @@
 namespace android {
 namespace init {
 
-Result<Success> ParsePermissionsLine(std::vector<std::string>&& args,
-                                     std::vector<SysfsPermissions>* out_sysfs_permissions,
-                                     std::vector<Permissions>* out_dev_permissions) {
+Result<void> ParsePermissionsLine(std::vector<std::string>&& args,
+                                  std::vector<SysfsPermissions>* out_sysfs_permissions,
+                                  std::vector<Permissions>* out_dev_permissions) {
     bool is_sysfs = out_sysfs_permissions != nullptr;
     if (is_sysfs && args.size() != 5) {
         return Error() << "/sys/ lines must have 5 entries";
@@ -74,39 +74,63 @@
     } else {
         out_dev_permissions->emplace_back(name, perm, uid, gid);
     }
-    return Success();
+    return {};
 }
 
-Result<Success> ParseFirmwareDirectoriesLine(std::vector<std::string>&& args,
-                                             std::vector<std::string>* firmware_directories) {
+Result<void> ParseFirmwareDirectoriesLine(std::vector<std::string>&& args,
+                                          std::vector<std::string>* firmware_directories) {
     if (args.size() < 2) {
         return Error() << "firmware_directories must have at least 1 entry";
     }
 
     std::move(std::next(args.begin()), args.end(), std::back_inserter(*firmware_directories));
 
-    return Success();
+    return {};
 }
 
-Result<Success> ParseModaliasHandlingLine(std::vector<std::string>&& args,
-                                          bool* enable_modalias_handling) {
+Result<void> ParseExternalFirmwareHandlerLine(
+        std::vector<std::string>&& args,
+        std::vector<ExternalFirmwareHandler>* external_firmware_handlers) {
+    if (args.size() != 4) {
+        return Error() << "external_firmware_handler lines must have exactly 3 parameters";
+    }
+
+    if (std::find_if(external_firmware_handlers->begin(), external_firmware_handlers->end(),
+                     [&args](const auto& other) { return other.devpath == args[2]; }) !=
+        external_firmware_handlers->end()) {
+        return Error() << "found a previous external_firmware_handler with the same devpath, '"
+                       << args[2] << "'";
+    }
+
+    passwd* pwd = getpwnam(args[2].c_str());
+    if (!pwd) {
+        return ErrnoError() << "invalid handler uid'" << args[2] << "'";
+    }
+
+    ExternalFirmwareHandler handler(std::move(args[1]), pwd->pw_uid, std::move(args[3]));
+    external_firmware_handlers->emplace_back(std::move(handler));
+
+    return {};
+}
+
+Result<void> ParseEnabledDisabledLine(std::vector<std::string>&& args, bool* feature) {
     if (args.size() != 2) {
-        return Error() << "modalias_handling lines take exactly one parameter";
+        return Error() << args[0] << " lines take exactly one parameter";
     }
 
     if (args[1] == "enabled") {
-        *enable_modalias_handling = true;
+        *feature = true;
     } else if (args[1] == "disabled") {
-        *enable_modalias_handling = false;
+        *feature = false;
     } else {
-        return Error() << "modalias_handling takes either 'enabled' or 'disabled' as a parameter";
+        return Error() << args[0] << " takes either 'enabled' or 'disabled' as a parameter";
     }
 
-    return Success();
+    return {};
 }
 
-Result<Success> ParseUeventSocketRcvbufSizeLine(std::vector<std::string>&& args,
-                                                size_t* uevent_socket_rcvbuf_size) {
+Result<void> ParseUeventSocketRcvbufSizeLine(std::vector<std::string>&& args,
+                                             size_t* uevent_socket_rcvbuf_size) {
     if (args.size() != 2) {
         return Error() << "uevent_socket_rcvbuf_size lines take exactly one parameter";
     }
@@ -118,27 +142,27 @@
 
     *uevent_socket_rcvbuf_size = parsed_size;
 
-    return Success();
+    return {};
 }
 
 class SubsystemParser : public SectionParser {
   public:
     SubsystemParser(std::vector<Subsystem>* subsystems) : subsystems_(subsystems) {}
-    Result<Success> ParseSection(std::vector<std::string>&& args, const std::string& filename,
-                                 int line) override;
-    Result<Success> ParseLineSection(std::vector<std::string>&& args, int line) override;
-    Result<Success> EndSection() override;
+    Result<void> ParseSection(std::vector<std::string>&& args, const std::string& filename,
+                              int line) override;
+    Result<void> ParseLineSection(std::vector<std::string>&& args, int line) override;
+    Result<void> EndSection() override;
 
   private:
-    Result<Success> ParseDevName(std::vector<std::string>&& args);
-    Result<Success> ParseDirName(std::vector<std::string>&& args);
+    Result<void> ParseDevName(std::vector<std::string>&& args);
+    Result<void> ParseDirName(std::vector<std::string>&& args);
 
     Subsystem subsystem_;
     std::vector<Subsystem>* subsystems_;
 };
 
-Result<Success> SubsystemParser::ParseSection(std::vector<std::string>&& args,
-                                              const std::string& filename, int line) {
+Result<void> SubsystemParser::ParseSection(std::vector<std::string>&& args,
+                                           const std::string& filename, int line) {
     if (args.size() != 2) {
         return Error() << "subsystems must have exactly one name";
     }
@@ -149,58 +173,51 @@
 
     subsystem_ = Subsystem(std::move(args[1]));
 
-    return Success();
+    return {};
 }
 
-Result<Success> SubsystemParser::ParseDevName(std::vector<std::string>&& args) {
+Result<void> SubsystemParser::ParseDevName(std::vector<std::string>&& args) {
     if (args[1] == "uevent_devname") {
         subsystem_.devname_source_ = Subsystem::DEVNAME_UEVENT_DEVNAME;
-        return Success();
+        return {};
     }
     if (args[1] == "uevent_devpath") {
         subsystem_.devname_source_ = Subsystem::DEVNAME_UEVENT_DEVPATH;
-        return Success();
+        return {};
     }
 
     return Error() << "invalid devname '" << args[1] << "'";
 }
 
-Result<Success> SubsystemParser::ParseDirName(std::vector<std::string>&& args) {
+Result<void> SubsystemParser::ParseDirName(std::vector<std::string>&& args) {
     if (args[1].front() != '/') {
         return Error() << "dirname '" << args[1] << " ' does not start with '/'";
     }
 
     subsystem_.dir_name_ = args[1];
-    return Success();
+    return {};
 }
 
-Result<Success> SubsystemParser::ParseLineSection(std::vector<std::string>&& args, int line) {
-    using OptionParser = Result<Success> (SubsystemParser::*)(std::vector<std::string> && args);
+Result<void> SubsystemParser::ParseLineSection(std::vector<std::string>&& args, int line) {
+    using OptionParser = Result<void> (SubsystemParser::*)(std::vector<std::string> && args);
+    // clang-format off
+    static const KeywordMap<OptionParser> parser_map = {
+        {"devname",     {1,     1,      &SubsystemParser::ParseDevName}},
+        {"dirname",     {1,     1,      &SubsystemParser::ParseDirName}},
+    };
+    // clang-format on
 
-    static class OptionParserMap : public KeywordMap<OptionParser> {
-      private:
-        const Map& map() const override {
-            // clang-format off
-            static const Map option_parsers = {
-                {"devname",     {1,     1,      &SubsystemParser::ParseDevName}},
-                {"dirname",     {1,     1,      &SubsystemParser::ParseDirName}},
-            };
-            // clang-format on
-            return option_parsers;
-        }
-    } parser_map;
+    auto parser = parser_map.Find(args);
 
-    auto parser = parser_map.FindFunction(args);
-
-    if (!parser) return Error() << parser.error();
+    if (!parser.ok()) return Error() << parser.error();
 
     return std::invoke(*parser, this, std::move(args));
 }
 
-Result<Success> SubsystemParser::EndSection() {
+Result<void> SubsystemParser::EndSection() {
     subsystems_->emplace_back(std::move(subsystem_));
 
-    return Success();
+    return {};
 }
 
 UeventdConfiguration ParseConfig(const std::vector<std::string>& configs) {
@@ -219,12 +236,18 @@
     parser.AddSingleLineParser("firmware_directories",
                                std::bind(ParseFirmwareDirectoriesLine, _1,
                                          &ueventd_configuration.firmware_directories));
+    parser.AddSingleLineParser("external_firmware_handler",
+                               std::bind(ParseExternalFirmwareHandlerLine, _1,
+                                         &ueventd_configuration.external_firmware_handlers));
     parser.AddSingleLineParser("modalias_handling",
-                               std::bind(ParseModaliasHandlingLine, _1,
+                               std::bind(ParseEnabledDisabledLine, _1,
                                          &ueventd_configuration.enable_modalias_handling));
     parser.AddSingleLineParser("uevent_socket_rcvbuf_size",
                                std::bind(ParseUeventSocketRcvbufSizeLine, _1,
                                          &ueventd_configuration.uevent_socket_rcvbuf_size));
+    parser.AddSingleLineParser("parallel_restorecon",
+                               std::bind(ParseEnabledDisabledLine, _1,
+                                         &ueventd_configuration.enable_parallel_restorecon));
 
     for (const auto& config : configs) {
         parser.ParseConfig(config);
diff --git a/init/ueventd_parser.h b/init/ueventd_parser.h
index d476dec..eaafa5a 100644
--- a/init/ueventd_parser.h
+++ b/init/ueventd_parser.h
@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_UEVENTD_PARSER_H
-#define _INIT_UEVENTD_PARSER_H
+#pragma once
 
 #include <string>
 #include <vector>
 
 #include "devices.h"
+#include "firmware_handler.h"
 
 namespace android {
 namespace init {
@@ -30,13 +30,13 @@
     std::vector<SysfsPermissions> sysfs_permissions;
     std::vector<Permissions> dev_permissions;
     std::vector<std::string> firmware_directories;
+    std::vector<ExternalFirmwareHandler> external_firmware_handlers;
     bool enable_modalias_handling = false;
     size_t uevent_socket_rcvbuf_size = 0;
+    bool enable_parallel_restorecon = false;
 };
 
 UeventdConfiguration ParseConfig(const std::vector<std::string>& configs);
 
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/ueventd_parser_test.cpp b/init/ueventd_parser_test.cpp
index 9c1cedf..172ba0b 100644
--- a/init/ueventd_parser_test.cpp
+++ b/init/ueventd_parser_test.cpp
@@ -20,6 +20,8 @@
 #include <gtest/gtest.h>
 #include <private/android_filesystem_config.h>
 
+#include "firmware_handler.h"
+
 namespace android {
 namespace init {
 
@@ -93,7 +95,7 @@
             {"test_devname2", Subsystem::DEVNAME_UEVENT_DEVNAME, "/dev"},
             {"test_devpath_dirname", Subsystem::DEVNAME_UEVENT_DEVPATH, "/dev/graphics"}};
 
-    TestUeventdFile(ueventd_file, {subsystems, {}, {}, {}});
+    TestUeventdFile(ueventd_file, {subsystems, {}, {}, {}, {}});
 }
 
 TEST(ueventd_parser, Permissions) {
@@ -119,7 +121,7 @@
             {"/sys/devices/virtual/*/input", "poll_delay", 0660, AID_ROOT, AID_INPUT},
     };
 
-    TestUeventdFile(ueventd_file, {{}, sysfs_permissions, permissions, {}});
+    TestUeventdFile(ueventd_file, {{}, sysfs_permissions, permissions, {}, {}});
 }
 
 TEST(ueventd_parser, FirmwareDirectories) {
@@ -135,7 +137,52 @@
             "/more",
     };
 
-    TestUeventdFile(ueventd_file, {{}, {}, {}, firmware_directories});
+    TestUeventdFile(ueventd_file, {{}, {}, {}, firmware_directories, {}});
+}
+
+TEST(ueventd_parser, ExternalFirmwareHandlers) {
+    auto ueventd_file = R"(
+external_firmware_handler devpath root handler_path
+external_firmware_handler /devices/path/firmware/something001.bin system /vendor/bin/firmware_handler.sh
+external_firmware_handler /devices/path/firmware/something001.bin radio "/vendor/bin/firmware_handler.sh --has --arguments"
+)";
+
+    auto external_firmware_handlers = std::vector<ExternalFirmwareHandler>{
+            {
+                    "devpath",
+                    AID_ROOT,
+                    "handler_path",
+            },
+            {
+                    "/devices/path/firmware/something001.bin",
+                    AID_SYSTEM,
+                    "/vendor/bin/firmware_handler.sh",
+            },
+            {
+                    "/devices/path/firmware/something001.bin",
+                    AID_RADIO,
+                    "/vendor/bin/firmware_handler.sh --has --arguments",
+            },
+    };
+
+    TestUeventdFile(ueventd_file, {{}, {}, {}, {}, external_firmware_handlers});
+}
+
+TEST(ueventd_parser, ExternalFirmwareHandlersDuplicate) {
+    auto ueventd_file = R"(
+external_firmware_handler devpath root handler_path
+external_firmware_handler devpath root handler_path2
+)";
+
+    auto external_firmware_handlers = std::vector<ExternalFirmwareHandler>{
+            {
+                    "devpath",
+                    AID_ROOT,
+                    "handler_path",
+            },
+    };
+
+    TestUeventdFile(ueventd_file, {{}, {}, {}, {}, external_firmware_handlers});
 }
 
 TEST(ueventd_parser, UeventSocketRcvbufSize) {
@@ -144,7 +191,25 @@
 uevent_socket_rcvbuf_size 8M
 )";
 
-    TestUeventdFile(ueventd_file, {{}, {}, {}, {}, false, 8 * 1024 * 1024});
+    TestUeventdFile(ueventd_file, {{}, {}, {}, {}, {}, false, 8 * 1024 * 1024});
+}
+
+TEST(ueventd_parser, EnabledDisabledLines) {
+    auto ueventd_file = R"(
+modalias_handling enabled
+parallel_restorecon enabled
+modalias_handling disabled
+)";
+
+    TestUeventdFile(ueventd_file, {{}, {}, {}, {}, {}, false, 0, true});
+
+    auto ueventd_file2 = R"(
+parallel_restorecon enabled
+modalias_handling enabled
+parallel_restorecon disabled
+)";
+
+    TestUeventdFile(ueventd_file2, {{}, {}, {}, {}, {}, true, 0, false});
 }
 
 TEST(ueventd_parser, AllTogether) {
@@ -178,7 +243,11 @@
 /sys/devices/virtual/*/input   poll_delay  0660  root   input
 firmware_directories /more
 
+external_firmware_handler /devices/path/firmware/firmware001.bin root /vendor/bin/touch.sh
+
 uevent_socket_rcvbuf_size 6M
+modalias_handling enabled
+parallel_restorecon enabled
 
 #ending comment
 )";
@@ -208,10 +277,15 @@
             "/more",
     };
 
+    auto external_firmware_handlers = std::vector<ExternalFirmwareHandler>{
+            {"/devices/path/firmware/firmware001.bin", AID_ROOT, "/vendor/bin/touch.sh"},
+    };
+
     size_t uevent_socket_rcvbuf_size = 6 * 1024 * 1024;
 
-    TestUeventdFile(ueventd_file, {subsystems, sysfs_permissions, permissions, firmware_directories,
-                                   false, uevent_socket_rcvbuf_size});
+    TestUeventdFile(ueventd_file,
+                    {subsystems, sysfs_permissions, permissions, firmware_directories,
+                     external_firmware_handlers, true, uevent_socket_rcvbuf_size, true});
 }
 
 // All of these lines are ill-formed, so test that there is 0 output.
@@ -230,6 +304,18 @@
 
 subsystem #no name
 
+modalias_handling
+modalias_handling enabled enabled
+modalias_handling blah
+
+parallel_restorecon
+parallel_restorecon enabled enabled
+parallel_restorecon blah
+
+external_firmware_handler
+external_firmware_handler blah blah
+external_firmware_handler blah blah blah blah
+
 )";
 
     TestUeventdFile(ueventd_file, {});
diff --git a/init/ueventd_test.cpp b/init/ueventd_test.cpp
index bfdc28e..2d7d2f8 100644
--- a/init/ueventd_test.cpp
+++ b/init/ueventd_test.cpp
@@ -68,7 +68,7 @@
 
 TEST(ueventd, setegid_IsPerThread) {
     if (getuid() != 0) {
-        GTEST_LOG_(INFO) << "Skipping test, must be run as root.";
+        GTEST_SKIP() << "Skipping test, must be run as root.";
         return;
     }
 
@@ -92,11 +92,11 @@
 
 TEST(ueventd, setfscreatecon_IsPerThread) {
     if (getuid() != 0) {
-        GTEST_LOG_(INFO) << "Skipping test, must be run as root.";
+        GTEST_SKIP() << "Skipping test, must be run as root.";
         return;
     }
     if (!is_selinux_enabled() || security_getenforce() == 1) {
-        GTEST_LOG_(INFO) << "Skipping test, SELinux must be enabled and in permissive mode.";
+        GTEST_SKIP() << "Skipping test, SELinux must be enabled and in permissive mode.";
         return;
     }
 
@@ -127,7 +127,7 @@
 
 TEST(ueventd, selabel_lookup_MultiThreaded) {
     if (getuid() != 0) {
-        GTEST_LOG_(INFO) << "Skipping test, must be run as root.";
+        GTEST_SKIP() << "Skipping test, must be run as root.";
         return;
     }
 
diff --git a/init/util.cpp b/init/util.cpp
index 63d2d44..255434a 100644
--- a/init/util.cpp
+++ b/init/util.cpp
@@ -20,6 +20,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <pwd.h>
+#include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -34,23 +35,25 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
+#include <android-base/scopeguard.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 #include <cutils/sockets.h>
 #include <selinux/android.h>
 
-#if defined(__ANDROID__)
+#ifdef INIT_FULL_SOURCES
+#include <android/api-level.h>
+#include <sys/system_properties.h>
+
 #include "reboot_utils.h"
+#include "selabel.h"
 #include "selinux.h"
 #else
 #include "host_init_stubs.h"
 #endif
 
-#ifdef _INIT_INIT_H
-#error "Do not include init.h in files used by ueventd; it will expose init's globals"
-#endif
-
 using android::base::boot_clock;
+using android::base::StartsWith;
 using namespace std::literals::string_literals;
 
 namespace android {
@@ -58,6 +61,8 @@
 
 const std::string kDefaultAndroidDtDir("/proc/device-tree/firmware/android/");
 
+void (*trigger_shutdown)(const std::string& command) = nullptr;
+
 // DecodeUid() - decodes and returns the given string, which can be either the
 // numeric or name representation, into the integer uid or gid.
 Result<uid_t> DecodeUid(const std::string& name) {
@@ -81,32 +86,28 @@
  * daemon. We communicate the file descriptor's value via the environment
  * variable ANDROID_SOCKET_ENV_PREFIX<name> ("ANDROID_SOCKET_foo").
  */
-int CreateSocket(const char* name, int type, bool passcred, mode_t perm, uid_t uid, gid_t gid,
-                 const char* socketcon) {
-    if (socketcon) {
-        if (setsockcreatecon(socketcon) == -1) {
-            PLOG(ERROR) << "setsockcreatecon(\"" << socketcon << "\") failed";
-            return -1;
+Result<int> CreateSocket(const std::string& name, int type, bool passcred, mode_t perm, uid_t uid,
+                         gid_t gid, const std::string& socketcon) {
+    if (!socketcon.empty()) {
+        if (setsockcreatecon(socketcon.c_str()) == -1) {
+            return ErrnoError() << "setsockcreatecon(\"" << socketcon << "\") failed";
         }
     }
 
     android::base::unique_fd fd(socket(PF_UNIX, type, 0));
     if (fd < 0) {
-        PLOG(ERROR) << "Failed to open socket '" << name << "'";
-        return -1;
+        return ErrnoError() << "Failed to open socket '" << name << "'";
     }
 
-    if (socketcon) setsockcreatecon(NULL);
+    if (!socketcon.empty()) setsockcreatecon(nullptr);
 
     struct sockaddr_un addr;
     memset(&addr, 0 , sizeof(addr));
     addr.sun_family = AF_UNIX;
-    snprintf(addr.sun_path, sizeof(addr.sun_path), ANDROID_SOCKET_DIR"/%s",
-             name);
+    snprintf(addr.sun_path, sizeof(addr.sun_path), ANDROID_SOCKET_DIR "/%s", name.c_str());
 
     if ((unlink(addr.sun_path) != 0) && (errno != ENOENT)) {
-        PLOG(ERROR) << "Failed to unlink old socket '" << name << "'";
-        return -1;
+        return ErrnoError() << "Failed to unlink old socket '" << name << "'";
     }
 
     std::string secontext;
@@ -117,8 +118,7 @@
     if (passcred) {
         int on = 1;
         if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on))) {
-            PLOG(ERROR) << "Failed to set SO_PASSCRED '" << name << "'";
-            return -1;
+            return ErrnoError() << "Failed to set SO_PASSCRED '" << name << "'";
         }
     }
 
@@ -129,19 +129,18 @@
         setfscreatecon(nullptr);
     }
 
+    auto guard = android::base::make_scope_guard([&addr] { unlink(addr.sun_path); });
+
     if (ret) {
         errno = savederrno;
-        PLOG(ERROR) << "Failed to bind socket '" << name << "'";
-        goto out_unlink;
+        return ErrnoError() << "Failed to bind socket '" << name << "'";
     }
 
     if (lchown(addr.sun_path, uid, gid)) {
-        PLOG(ERROR) << "Failed to lchown socket '" << addr.sun_path << "'";
-        goto out_unlink;
+        return ErrnoError() << "Failed to lchown socket '" << addr.sun_path << "'";
     }
     if (fchmodat(AT_FDCWD, addr.sun_path, perm, AT_SYMLINK_NOFOLLOW)) {
-        PLOG(ERROR) << "Failed to fchmodat socket '" << addr.sun_path << "'";
-        goto out_unlink;
+        return ErrnoError() << "Failed to fchmodat socket '" << addr.sun_path << "'";
     }
 
     LOG(INFO) << "Created socket '" << addr.sun_path << "'"
@@ -149,11 +148,8 @@
               << ", user " << uid
               << ", group " << gid;
 
+    guard.Disable();
     return fd.release();
-
-out_unlink:
-    unlink(addr.sun_path);
-    return -1;
 }
 
 Result<std::string> ReadFile(const std::string& path) {
@@ -197,7 +193,7 @@
     return rc;
 }
 
-Result<Success> WriteFile(const std::string& path, const std::string& content) {
+Result<void> WriteFile(const std::string& path, const std::string& content) {
     android::base::unique_fd fd(TEMP_FAILURE_RETRY(
         OpenFile(path, O_WRONLY | O_CREAT | O_NOFOLLOW | O_TRUNC | O_CLOEXEC, 0600)));
     if (fd == -1) {
@@ -206,7 +202,7 @@
     if (!android::base::WriteStringToFd(content, fd)) {
         return ErrnoError() << "Unable to write file contents";
     }
-    return Success();
+    return {};
 }
 
 bool mkdir_recursive(const std::string& path, mode_t mode) {
@@ -238,15 +234,14 @@
     return -1;
 }
 
-void import_kernel_cmdline(bool in_qemu,
-                           const std::function<void(const std::string&, const std::string&, bool)>& fn) {
+void ImportKernelCmdline(const std::function<void(const std::string&, const std::string&)>& fn) {
     std::string cmdline;
     android::base::ReadFileToString("/proc/cmdline", &cmdline);
 
     for (const auto& entry : android::base::Split(android::base::Trim(cmdline), " ")) {
         std::vector<std::string> pieces = android::base::Split(entry, "=");
         if (pieces.size() == 2) {
-            fn(pieces[0], pieces[1], in_qemu);
+            fn(pieces[0], pieces[1]);
         }
     }
 }
@@ -279,12 +274,10 @@
     return S_ISDIR(info.st_mode);
 }
 
-bool expand_props(const std::string& src, std::string* dst) {
+Result<std::string> ExpandProps(const std::string& src) {
     const char* src_ptr = src.c_str();
 
-    if (!dst) {
-        return false;
-    }
+    std::string dst;
 
     /* - variables can either be $x.y or ${x.y}, in case they are only part
      *   of the string.
@@ -298,19 +291,19 @@
 
         c = strchr(src_ptr, '$');
         if (!c) {
-            dst->append(src_ptr);
-            return true;
+            dst.append(src_ptr);
+            return dst;
         }
 
-        dst->append(src_ptr, c);
+        dst.append(src_ptr, c);
         c++;
 
         if (*c == '$') {
-            dst->push_back(*(c++));
+            dst.push_back(*(c++));
             src_ptr = c;
             continue;
         } else if (*c == '\0') {
-            return true;
+            return dst;
         }
 
         std::string prop_name;
@@ -320,8 +313,7 @@
             const char* end = strchr(c, '}');
             if (!end) {
                 // failed to find closing brace, abort.
-                LOG(ERROR) << "unexpected end of string in '" << src << "', looking for }";
-                return false;
+                return Error() << "unexpected end of string in '" << src << "', looking for }";
             }
             prop_name = std::string(c, end);
             c = end + 1;
@@ -332,41 +324,45 @@
             }
         } else {
             prop_name = c;
-            LOG(ERROR) << "using deprecated syntax for specifying property '" << c << "', use ${name} instead";
+            if (SelinuxGetVendorAndroidVersion() >= __ANDROID_API_R__) {
+                return Error() << "using deprecated syntax for specifying property '" << c
+                               << "', use ${name} instead";
+            } else {
+                LOG(ERROR) << "using deprecated syntax for specifying property '" << c
+                           << "', use ${name} instead";
+            }
             c += prop_name.size();
         }
 
         if (prop_name.empty()) {
-            LOG(ERROR) << "invalid zero-length property name in '" << src << "'";
-            return false;
+            return Error() << "invalid zero-length property name in '" << src << "'";
         }
 
         std::string prop_val = android::base::GetProperty(prop_name, "");
         if (prop_val.empty()) {
             if (def_val.empty()) {
-                LOG(ERROR) << "property '" << prop_name << "' doesn't exist while expanding '" << src << "'";
-                return false;
+                return Error() << "property '" << prop_name << "' doesn't exist while expanding '"
+                               << src << "'";
             }
             prop_val = def_val;
         }
 
-        dst->append(prop_val);
+        dst.append(prop_val);
         src_ptr = c;
     }
 
-    return true;
+    return dst;
 }
 
 static std::string init_android_dt_dir() {
     // Use the standard procfs-based path by default
     std::string android_dt_dir = kDefaultAndroidDtDir;
     // The platform may specify a custom Android DT path in kernel cmdline
-    import_kernel_cmdline(false,
-                          [&](const std::string& key, const std::string& value, bool in_qemu) {
-                              if (key == "androidboot.android_dt_dir") {
-                                  android_dt_dir = value;
-                              }
-                          });
+    ImportKernelCmdline([&](const std::string& key, const std::string& value) {
+        if (key == "androidboot.android_dt_dir") {
+            android_dt_dir = value;
+        }
+    });
     LOG(INFO) << "Using Android DT directory " << android_dt_dir;
     return android_dt_dir;
 }
@@ -426,6 +422,256 @@
     return true;
 }
 
+Result<void> IsLegalPropertyValue(const std::string& name, const std::string& value) {
+    if (value.size() >= PROP_VALUE_MAX && !StartsWith(name, "ro.")) {
+        return Error() << "Property value too long";
+    }
+
+    if (mbstowcs(nullptr, value.data(), 0) == static_cast<std::size_t>(-1)) {
+        return Error() << "Value is not a UTF8 encoded string";
+    }
+
+    return {};
+}
+
+static FscryptAction FscryptInferAction(const std::string& dir) {
+    const std::string prefix = "/data/";
+
+    if (!android::base::StartsWith(dir, prefix)) {
+        return FscryptAction::kNone;
+    }
+
+    // Special-case /data/media/obb per b/64566063
+    if (dir == "/data/media/obb") {
+        // Try to set policy on this directory, but if it is non-empty this may fail.
+        return FscryptAction::kAttempt;
+    }
+
+    // Only set policy on first level /data directories
+    // To make this less restrictive, consider using a policy file.
+    // However this is overkill for as long as the policy is simply
+    // to apply a global policy to all /data folders created via makedir
+    if (dir.find_first_of('/', prefix.size()) != std::string::npos) {
+        return FscryptAction::kNone;
+    }
+
+    // Special case various directories that must not be encrypted,
+    // often because their subdirectories must be encrypted.
+    // This isn't a nice way to do this, see b/26641735
+    std::vector<std::string> directories_to_exclude = {
+            "lost+found", "system_ce", "system_de", "misc_ce",     "misc_de",
+            "vendor_ce",  "vendor_de", "media",     "data",        "user",
+            "user_de",    "apex",      "preloads",  "app-staging", "gsi",
+    };
+    for (const auto& d : directories_to_exclude) {
+        if ((prefix + d) == dir) {
+            return FscryptAction::kNone;
+        }
+    }
+    // Empty these directories if policy setting fails.
+    std::vector<std::string> wipe_on_failure = {
+            "rollback", "rollback-observer",  // b/139193659
+    };
+    for (const auto& d : wipe_on_failure) {
+        if ((prefix + d) == dir) {
+            return FscryptAction::kDeleteIfNecessary;
+        }
+    }
+    return FscryptAction::kRequire;
+}
+
+Result<MkdirOptions> ParseMkdir(const std::vector<std::string>& args) {
+    mode_t mode = 0755;
+    Result<uid_t> uid = -1;
+    Result<gid_t> gid = -1;
+    FscryptAction fscrypt_inferred_action = FscryptInferAction(args[1]);
+    FscryptAction fscrypt_action = fscrypt_inferred_action;
+    std::string ref_option = "ref";
+    bool set_option_encryption = false;
+    bool set_option_key = false;
+
+    for (size_t i = 2; i < args.size(); i++) {
+        switch (i) {
+            case 2:
+                mode = std::strtoul(args[2].c_str(), 0, 8);
+                break;
+            case 3:
+                uid = DecodeUid(args[3]);
+                if (!uid.ok()) {
+                    return Error()
+                           << "Unable to decode UID for '" << args[3] << "': " << uid.error();
+                }
+                break;
+            case 4:
+                gid = DecodeUid(args[4]);
+                if (!gid.ok()) {
+                    return Error()
+                           << "Unable to decode GID for '" << args[4] << "': " << gid.error();
+                }
+                break;
+            default:
+                auto parts = android::base::Split(args[i], "=");
+                if (parts.size() != 2) {
+                    return Error() << "Can't parse option: '" << args[i] << "'";
+                }
+                auto optname = parts[0];
+                auto optval = parts[1];
+                if (optname == "encryption") {
+                    if (set_option_encryption) {
+                        return Error() << "Duplicated option: '" << optname << "'";
+                    }
+                    if (optval == "Require") {
+                        fscrypt_action = FscryptAction::kRequire;
+                    } else if (optval == "None") {
+                        fscrypt_action = FscryptAction::kNone;
+                    } else if (optval == "Attempt") {
+                        fscrypt_action = FscryptAction::kAttempt;
+                    } else if (optval == "DeleteIfNecessary") {
+                        fscrypt_action = FscryptAction::kDeleteIfNecessary;
+                    } else {
+                        return Error() << "Unknown encryption option: '" << optval << "'";
+                    }
+                    set_option_encryption = true;
+                } else if (optname == "key") {
+                    if (set_option_key) {
+                        return Error() << "Duplicated option: '" << optname << "'";
+                    }
+                    if (optval == "ref" || optval == "per_boot_ref") {
+                        ref_option = optval;
+                    } else {
+                        return Error() << "Unknown key option: '" << optval << "'";
+                    }
+                    set_option_key = true;
+                } else {
+                    return Error() << "Unknown option: '" << args[i] << "'";
+                }
+        }
+    }
+    if (set_option_key && fscrypt_action == FscryptAction::kNone) {
+        return Error() << "Key option set but encryption action is none";
+    }
+    const std::string prefix = "/data/";
+    if (StartsWith(args[1], prefix) &&
+        args[1].find_first_of('/', prefix.size()) == std::string::npos) {
+        if (!set_option_encryption) {
+            LOG(WARNING) << "Top-level directory needs encryption action, eg mkdir " << args[1]
+                         << " <mode> <uid> <gid> encryption=Require";
+        }
+        if (fscrypt_action == FscryptAction::kNone) {
+            LOG(INFO) << "Not setting encryption policy on: " << args[1];
+        }
+    }
+    if (fscrypt_action != fscrypt_inferred_action) {
+        LOG(WARNING) << "Inferred action different from explicit one, expected "
+                     << static_cast<int>(fscrypt_inferred_action) << " but got "
+                     << static_cast<int>(fscrypt_action);
+    }
+
+    return MkdirOptions{args[1], mode, *uid, *gid, fscrypt_action, ref_option};
+}
+
+Result<MountAllOptions> ParseMountAll(const std::vector<std::string>& args) {
+    bool compat_mode = false;
+    bool import_rc = false;
+    if (SelinuxGetVendorAndroidVersion() <= __ANDROID_API_Q__) {
+        if (args.size() <= 1) {
+            return Error() << "mount_all requires at least 1 argument";
+        }
+        compat_mode = true;
+        import_rc = true;
+    }
+
+    std::size_t first_option_arg = args.size();
+    enum mount_mode mode = MOUNT_MODE_DEFAULT;
+
+    // If we are <= Q, then stop looking for non-fstab arguments at slot 2.
+    // Otherwise, stop looking at slot 1 (as the fstab path argument is optional >= R).
+    for (std::size_t na = args.size() - 1; na > (compat_mode ? 1 : 0); --na) {
+        if (args[na] == "--early") {
+            first_option_arg = na;
+            mode = MOUNT_MODE_EARLY;
+        } else if (args[na] == "--late") {
+            first_option_arg = na;
+            mode = MOUNT_MODE_LATE;
+            import_rc = false;
+        }
+    }
+
+    std::string fstab_path;
+    if (first_option_arg > 1) {
+        fstab_path = args[1];
+    } else if (compat_mode) {
+        return Error() << "mount_all argument 1 must be the fstab path";
+    }
+
+    std::vector<std::string> rc_paths;
+    for (std::size_t na = 2; na < first_option_arg; ++na) {
+        rc_paths.push_back(args[na]);
+    }
+
+    return MountAllOptions{rc_paths, fstab_path, mode, import_rc};
+}
+
+Result<std::pair<int, std::vector<std::string>>> ParseRestorecon(
+        const std::vector<std::string>& args) {
+    struct flag_type {
+        const char* name;
+        int value;
+    };
+    static const flag_type flags[] = {
+            {"--recursive", SELINUX_ANDROID_RESTORECON_RECURSE},
+            {"--skip-ce", SELINUX_ANDROID_RESTORECON_SKIPCE},
+            {"--cross-filesystems", SELINUX_ANDROID_RESTORECON_CROSS_FILESYSTEMS},
+            {0, 0}};
+
+    int flag = 0;
+    std::vector<std::string> paths;
+
+    bool in_flags = true;
+    for (size_t i = 1; i < args.size(); ++i) {
+        if (android::base::StartsWith(args[i], "--")) {
+            if (!in_flags) {
+                return Error() << "flags must precede paths";
+            }
+            bool found = false;
+            for (size_t j = 0; flags[j].name; ++j) {
+                if (args[i] == flags[j].name) {
+                    flag |= flags[j].value;
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                return Error() << "bad flag " << args[i];
+            }
+        } else {
+            in_flags = false;
+            paths.emplace_back(args[i]);
+        }
+    }
+    return std::pair(flag, paths);
+}
+
+Result<std::string> ParseSwaponAll(const std::vector<std::string>& args) {
+    if (args.size() <= 1) {
+        if (SelinuxGetVendorAndroidVersion() <= __ANDROID_API_Q__) {
+            return Error() << "swapon_all requires at least 1 argument";
+        }
+        return {};
+    }
+    return args[1];
+}
+
+Result<std::string> ParseUmountAll(const std::vector<std::string>& args) {
+    if (args.size() <= 1) {
+        if (SelinuxGetVendorAndroidVersion() <= __ANDROID_API_Q__) {
+            return Error() << "umount_all requires at least 1 argument";
+        }
+        return {};
+    }
+    return args[1];
+}
+
 static void InitAborter(const char* abort_message) {
     // When init forks, it continues to use this aborter for LOG(FATAL), but we want children to
     // simply abort instead of trying to reboot the system.
@@ -434,7 +680,7 @@
         return;
     }
 
-    InitFatalReboot();
+    InitFatalReboot(SIGABRT);
 }
 
 // The kernel opens /dev/console and uses that fd for stdin/stdout/stderr if there is a serial
@@ -454,7 +700,7 @@
 // SetStdioToDevNull() must be called again in second stage init.
 void SetStdioToDevNull(char** argv) {
     // Make stdin/stdout/stderr all point to /dev/null.
-    int fd = open("/dev/null", O_RDWR);
+    int fd = open("/dev/null", O_RDWR);  // NOLINT(android-cloexec-open)
     if (fd == -1) {
         int saved_errno = errno;
         android::base::InitLogging(argv, &android::base::KernelLogger, InitAborter);
diff --git a/init/util.h b/init/util.h
index 767620b..3cdc9f4 100644
--- a/init/util.h
+++ b/init/util.h
@@ -14,45 +14,50 @@
  * limitations under the License.
  */
 
-#ifndef _INIT_UTIL_H_
-#define _INIT_UTIL_H_
+#pragma once
 
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include <chrono>
 #include <functional>
-#include <ostream>
 #include <string>
+#include <vector>
 
 #include <android-base/chrono_utils.h>
-#include <selinux/label.h>
 
+#include "fscrypt_init_extensions.h"
 #include "result.h"
 
-#define COLDBOOT_DONE "/dev/.coldboot_done"
-
 using android::base::boot_clock;
-using namespace std::chrono_literals;
 
 namespace android {
 namespace init {
 
-int CreateSocket(const char* name, int type, bool passcred, mode_t perm, uid_t uid, gid_t gid,
-                 const char* socketcon);
+enum mount_mode {
+    MOUNT_MODE_DEFAULT = 0,
+    MOUNT_MODE_EARLY = 1,
+    MOUNT_MODE_LATE = 2,
+};
+
+static const char kColdBootDoneProp[] = "ro.cold_boot_done";
+
+extern void (*trigger_shutdown)(const std::string& command);
+
+Result<int> CreateSocket(const std::string& name, int type, bool passcred, mode_t perm, uid_t uid,
+                         gid_t gid, const std::string& socketcon);
 
 Result<std::string> ReadFile(const std::string& path);
-Result<Success> WriteFile(const std::string& path, const std::string& content);
+Result<void> WriteFile(const std::string& path, const std::string& content);
 
 Result<uid_t> DecodeUid(const std::string& name);
 
 bool mkdir_recursive(const std::string& pathname, mode_t mode);
 int wait_for_file(const char *filename, std::chrono::nanoseconds timeout);
-void import_kernel_cmdline(bool in_qemu,
-                           const std::function<void(const std::string&, const std::string&, bool)>&);
+void ImportKernelCmdline(const std::function<void(const std::string&, const std::string&)>&);
 bool make_dir(const std::string& path, mode_t mode);
 bool is_dir(const char* pathname);
-bool expand_props(const std::string& src, std::string* dst);
+Result<std::string> ExpandProps(const std::string& src);
 
 // Returns the platform's Android DT directory as specified in the kernel cmdline.
 // If the platform does not configure a custom DT path, returns the standard one (based in procfs).
@@ -62,11 +67,37 @@
 bool is_android_dt_value_expected(const std::string& sub_path, const std::string& expected_content);
 
 bool IsLegalPropertyName(const std::string& name);
+Result<void> IsLegalPropertyValue(const std::string& name, const std::string& value);
+
+struct MkdirOptions {
+    std::string target;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+    FscryptAction fscrypt_action;
+    std::string ref_option;
+};
+
+Result<MkdirOptions> ParseMkdir(const std::vector<std::string>& args);
+
+struct MountAllOptions {
+    std::vector<std::string> rc_paths;
+    std::string fstab_path;
+    mount_mode mode;
+    bool import_rc;
+};
+
+Result<MountAllOptions> ParseMountAll(const std::vector<std::string>& args);
+
+Result<std::pair<int, std::vector<std::string>>> ParseRestorecon(
+        const std::vector<std::string>& args);
+
+Result<std::string> ParseSwaponAll(const std::vector<std::string>& args);
+
+Result<std::string> ParseUmountAll(const std::vector<std::string>& args);
 
 void SetStdioToDevNull(char** argv);
 void InitKernelLogging(char** argv);
 bool IsRecoveryMode();
 }  // namespace init
 }  // namespace android
-
-#endif
diff --git a/init/util_test.cpp b/init/util_test.cpp
index 1b5afba..08343dc 100644
--- a/init/util_test.cpp
+++ b/init/util_test.cpp
@@ -33,44 +33,46 @@
     errno = 0;
     auto file_contents = ReadFile("/proc/does-not-exist");
     EXPECT_EQ(ENOENT, errno);
-    ASSERT_FALSE(file_contents);
-    EXPECT_EQ("open() failed: No such file or directory", file_contents.error_string());
+    ASSERT_FALSE(file_contents.ok());
+    EXPECT_EQ("open() failed: No such file or directory", file_contents.error().message());
 }
 
 TEST(util, ReadFileGroupWriteable) {
     std::string s("hello");
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
-    EXPECT_TRUE(WriteFile(tf.path, s)) << strerror(errno);
+    EXPECT_RESULT_OK(WriteFile(tf.path, s));
     EXPECT_NE(-1, fchmodat(AT_FDCWD, tf.path, 0620, AT_SYMLINK_NOFOLLOW)) << strerror(errno);
     auto file_contents = ReadFile(tf.path);
-    ASSERT_FALSE(file_contents) << strerror(errno);
-    EXPECT_EQ("Skipping insecure file", file_contents.error_string());
+    ASSERT_FALSE(file_contents.ok()) << strerror(errno);
+    EXPECT_EQ("Skipping insecure file", file_contents.error().message());
 }
 
 TEST(util, ReadFileWorldWiteable) {
     std::string s("hello");
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
-    EXPECT_TRUE(WriteFile(tf.path, s)) << strerror(errno);
+    EXPECT_RESULT_OK(WriteFile(tf.path, s));
     EXPECT_NE(-1, fchmodat(AT_FDCWD, tf.path, 0602, AT_SYMLINK_NOFOLLOW)) << strerror(errno);
     auto file_contents = ReadFile(tf.path);
-    ASSERT_FALSE(file_contents) << strerror(errno);
-    EXPECT_EQ("Skipping insecure file", file_contents.error_string());
+    ASSERT_FALSE(file_contents.ok());
+    EXPECT_EQ("Skipping insecure file", file_contents.error().message());
 }
 
 TEST(util, ReadFileSymbolicLink) {
     errno = 0;
-    // lrwxrwxrwx 1 root root 13 1970-01-01 00:00 charger -> /sbin/healthd
-    auto file_contents = ReadFile("/charger");
+    // lrwxrwxrwx 1 root shell 6 2020-06-26 09:55 /system/bin/ps -> toybox
+    auto file_contents = ReadFile("/system/bin/ps");
+
     EXPECT_EQ(ELOOP, errno);
-    ASSERT_FALSE(file_contents);
-    EXPECT_EQ("open() failed: Too many symbolic links encountered", file_contents.error_string());
+    ASSERT_FALSE(file_contents.ok());
+    EXPECT_EQ("open() failed: Too many symbolic links encountered",
+              file_contents.error().message());
 }
 
 TEST(util, ReadFileSuccess) {
     auto file_contents = ReadFile("/proc/version");
-    ASSERT_TRUE(file_contents);
+    ASSERT_TRUE(file_contents.ok());
     EXPECT_GT(file_contents->length(), 6U);
     EXPECT_EQ('\n', file_contents->at(file_contents->length() - 1));
     (*file_contents)[5] = 0;
@@ -86,10 +88,10 @@
 
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
-    EXPECT_TRUE(WriteFile(tf.path, contents)) << strerror(errno);
+    EXPECT_RESULT_OK(WriteFile(tf.path, contents));
 
     auto read_back_contents = ReadFile(tf.path);
-    ASSERT_TRUE(read_back_contents) << strerror(errno);
+    ASSERT_RESULT_OK(read_back_contents);
     EXPECT_EQ(contents, *read_back_contents);
     EXPECT_EQ(10u, read_back_contents->size());
 }
@@ -98,14 +100,15 @@
     std::string s("hello");
     TemporaryDir test_dir;
     std::string path = android::base::StringPrintf("%s/does-not-exist", test_dir.path);
-    EXPECT_TRUE(WriteFile(path, s));
+    EXPECT_RESULT_OK(WriteFile(path, s));
     auto file_contents = ReadFile(path);
-    ASSERT_TRUE(file_contents);
+    ASSERT_RESULT_OK(file_contents);
     EXPECT_EQ(s, *file_contents);
     struct stat sb;
     int fd = open(path.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
     EXPECT_NE(-1, fd);
     EXPECT_EQ(0, fstat(fd, &sb));
+    EXPECT_EQ(0, close(fd));
     EXPECT_EQ((const unsigned int)(S_IRUSR | S_IWUSR), sb.st_mode & 0777);
     EXPECT_EQ(0, unlink(path.c_str()));
 }
@@ -113,27 +116,27 @@
 TEST(util, WriteFileExist) {
     TemporaryFile tf;
     ASSERT_TRUE(tf.fd != -1);
-    EXPECT_TRUE(WriteFile(tf.path, "1hello1")) << strerror(errno);
+    EXPECT_RESULT_OK(WriteFile(tf.path, "1hello1"));
     auto file_contents = ReadFile(tf.path);
-    ASSERT_TRUE(file_contents);
+    ASSERT_RESULT_OK(file_contents);
     EXPECT_EQ("1hello1", *file_contents);
-    EXPECT_TRUE(WriteFile(tf.path, "2ll2"));
+    EXPECT_RESULT_OK(WriteFile(tf.path, "2ll2"));
     file_contents = ReadFile(tf.path);
-    ASSERT_TRUE(file_contents);
+    ASSERT_RESULT_OK(file_contents);
     EXPECT_EQ("2ll2", *file_contents);
 }
 
 TEST(util, DecodeUid) {
     auto decoded_uid = DecodeUid("root");
-    EXPECT_TRUE(decoded_uid);
+    EXPECT_TRUE(decoded_uid.ok());
     EXPECT_EQ(0U, *decoded_uid);
 
     decoded_uid = DecodeUid("toot");
-    EXPECT_FALSE(decoded_uid);
-    EXPECT_EQ("getpwnam failed: No such file or directory", decoded_uid.error_string());
+    EXPECT_FALSE(decoded_uid.ok());
+    EXPECT_EQ("getpwnam failed: No such file or directory", decoded_uid.error().message());
 
     decoded_uid = DecodeUid("123");
-    EXPECT_TRUE(decoded_uid);
+    EXPECT_RESULT_OK(decoded_uid);
     EXPECT_EQ(123U, *decoded_uid);
 }
 
diff --git a/libappfuse/FuseBridgeLoop.cc b/libappfuse/FuseBridgeLoop.cc
index f71d0c3..22f381c 100644
--- a/libappfuse/FuseBridgeLoop.cc
+++ b/libappfuse/FuseBridgeLoop.cc
@@ -311,6 +311,8 @@
     }
 };
 
+std::recursive_mutex FuseBridgeLoop::mutex_;
+
 FuseBridgeLoop::FuseBridgeLoop() : opened_(true) {
     base::unique_fd epoll_fd(epoll_create1(EPOLL_CLOEXEC));
     if (epoll_fd.get() == -1) {
@@ -328,7 +330,7 @@
 
     std::unique_ptr<FuseBridgeEntry> bridge(
         new FuseBridgeEntry(mount_id, std::move(dev_fd), std::move(proxy_fd)));
-    std::lock_guard<std::mutex> lock(mutex_);
+    std::lock_guard<std::recursive_mutex> lock(mutex_);
     if (!opened_) {
         LOG(ERROR) << "Tried to add a mount to a closed bridge";
         return false;
@@ -372,7 +374,7 @@
         const bool wait_result = epoll_controller_->Wait(bridges_.size(), &entries);
         LOG(VERBOSE) << "Receive epoll events";
         {
-            std::lock_guard<std::mutex> lock(mutex_);
+            std::lock_guard<std::recursive_mutex> lock(mutex_);
             if (!(wait_result && ProcessEventLocked(entries, callback))) {
                 for (auto it = bridges_.begin(); it != bridges_.end();) {
                     callback->OnClosed(it->second->mount_id());
@@ -385,5 +387,13 @@
     }
 }
 
+void FuseBridgeLoop::Lock() {
+    mutex_.lock();
+}
+
+void FuseBridgeLoop::Unlock() {
+    mutex_.unlock();
+}
+
 }  // namespace fuse
 }  // namespace android
diff --git a/libappfuse/include/libappfuse/FuseBridgeLoop.h b/libappfuse/include/libappfuse/FuseBridgeLoop.h
index 6bfda98..d5fc28f 100644
--- a/libappfuse/include/libappfuse/FuseBridgeLoop.h
+++ b/libappfuse/include/libappfuse/FuseBridgeLoop.h
@@ -50,6 +50,10 @@
     // thread from one which invokes |Start|.
     bool AddBridge(int mount_id, base::unique_fd dev_fd, base::unique_fd proxy_fd);
 
+    static void Lock();
+
+    static void Unlock();
+
   private:
     bool ProcessEventLocked(const std::unordered_set<FuseBridgeEntry*>& entries,
                             FuseBridgeLoopCallback* callback);
@@ -60,7 +64,7 @@
     std::map<int, std::unique_ptr<FuseBridgeEntry>> bridges_;
 
     // Lock for multi-threading.
-    std::mutex mutex_;
+    static std::recursive_mutex mutex_;
 
     bool opened_;
 
diff --git a/libasyncio/Android.bp b/libasyncio/Android.bp
index 4ab439d..44e7933 100644
--- a/libasyncio/Android.bp
+++ b/libasyncio/Android.bp
@@ -28,6 +28,10 @@
     defaults: ["libasyncio_defaults"],
     vendor_available: true,
     recovery_available: true,
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.adbd",
+    ],
     host_supported: true,
     srcs: [
         "AsyncIO.cpp",
diff --git a/libbacktrace/Android.bp b/libbacktrace/Android.bp
index 7f9a18a..c9e4512 100644
--- a/libbacktrace/Android.bp
+++ b/libbacktrace/Android.bp
@@ -42,19 +42,18 @@
     name: "libbacktrace_headers",
     vendor_available: true,
     recovery_available: true,
+    native_bridge_supported: true,
     export_include_dirs: ["include"],
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "apex_inherit",
 }
 
-cc_library {
-    name: "libbacktrace",
-    vendor_available: false,
-    recovery_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+cc_defaults {
+    name: "libbacktrace_defaults",
     defaults: ["libbacktrace_common"],
-    host_supported: true,
 
     cflags: [
         "-Wexit-time-destructors",
@@ -79,7 +78,6 @@
             shared_libs: [
                 "libbase",
                 "liblog",
-                "libunwindstack",
             ],
 
             static_libs: [
@@ -88,6 +86,35 @@
         },
         android: {
             static_libs: ["libasync_safe"],
+            static: {
+                whole_static_libs: ["libasync_safe"],
+            },
+        },
+    },
+}
+
+cc_library {
+    name: "libbacktrace",
+    vendor_available: false,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
+    recovery_available: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    host_supported: true,
+    defaults: ["libbacktrace_defaults"],
+
+    target: {
+        linux: {
+            shared_libs: [
+                "libunwindstack",
+            ],
         },
         vendor: {
             cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
@@ -95,8 +122,25 @@
         recovery: {
             cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
         },
+        native_bridge: {
+            cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
+        },
     },
-    whole_static_libs: ["libdemangle"],
+}
+
+// Static library without DEX support to avoid dependencies on the ART APEX.
+cc_library_static {
+    name: "libbacktrace_no_dex",
+    visibility: ["//system/core/debuggerd"],
+    defaults: ["libbacktrace_defaults"],
+    cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
+    target: {
+        linux: {
+            static_libs: [
+                "libunwindstack_no_dex",
+            ],
+        },
+    },
 }
 
 cc_test_library {
@@ -134,7 +178,6 @@
     defaults: ["libbacktrace_common"],
     host_supported: true,
     srcs: [
-        "backtrace_offline_test.cpp",
         "backtrace_test.cpp",
     ],
 
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
index 71980d7..3e050ab 100644
--- a/libbacktrace/Backtrace.cpp
+++ b/libbacktrace/Backtrace.cpp
@@ -28,13 +28,13 @@
 #include <backtrace/Backtrace.h>
 #include <backtrace/BacktraceMap.h>
 
-#include <demangle.h>
-
 #include "BacktraceLog.h"
 #include "UnwindStack.h"
 
 using android::base::StringPrintf;
 
+extern "C" char* __cxa_demangle(const char*, char*, size_t*, int*);
+
 //-------------------------------------------------------------------------
 // Backtrace functions.
 //-------------------------------------------------------------------------
@@ -63,7 +63,14 @@
   if (map->start == 0 || (map->flags & PROT_DEVICE_MAP)) {
     return "";
   }
-  return demangle(GetFunctionNameRaw(pc, offset).c_str());
+  std::string name(GetFunctionNameRaw(pc, offset));
+  char* demangled_name = __cxa_demangle(name.c_str(), nullptr, nullptr, nullptr);
+  if (demangled_name != nullptr) {
+    name = demangled_name;
+    free(demangled_name);
+    return name;
+  }
+  return name;
 }
 
 bool Backtrace::VerifyReadWordArgs(uint64_t ptr, word_t* out_value) {
diff --git a/libbacktrace/UnwindStack.cpp b/libbacktrace/UnwindStack.cpp
index 36640cd..624711f 100644
--- a/libbacktrace/UnwindStack.cpp
+++ b/libbacktrace/UnwindStack.cpp
@@ -24,7 +24,6 @@
 #include <string>
 
 #include <backtrace/Backtrace.h>
-#include <demangle.h>
 #include <unwindstack/Elf.h>
 #include <unwindstack/MapInfo.h>
 #include <unwindstack/Maps.h>
@@ -41,6 +40,8 @@
 #include "UnwindStack.h"
 #include "UnwindStackMap.h"
 
+extern "C" char* __cxa_demangle(const char*, char*, size_t*, int*);
+
 bool Backtrace::Unwind(unwindstack::Regs* regs, BacktraceMap* back_map,
                        std::vector<backtrace_frame_data_t>* frames, size_t num_ignore_frames,
                        std::vector<std::string>* skip_names, BacktraceUnwindError* error) {
@@ -115,7 +116,13 @@
     back_frame->pc = frame->pc;
     back_frame->sp = frame->sp;
 
-    back_frame->func_name = demangle(frame->function_name.c_str());
+    char* demangled_name = __cxa_demangle(frame->function_name.c_str(), nullptr, nullptr, nullptr);
+    if (demangled_name != nullptr) {
+      back_frame->func_name = demangled_name;
+      free(demangled_name);
+    } else {
+      back_frame->func_name = frame->function_name;
+    }
     back_frame->func_offset = frame->function_offset;
 
     back_frame->map.name = frame->map_name;
@@ -129,22 +136,6 @@
   return true;
 }
 
-bool Backtrace::UnwindOffline(unwindstack::Regs* regs, BacktraceMap* back_map,
-                              const backtrace_stackinfo_t& stack,
-                              std::vector<backtrace_frame_data_t>* frames,
-                              BacktraceUnwindError* error) {
-  UnwindStackOfflineMap* offline_map = reinterpret_cast<UnwindStackOfflineMap*>(back_map);
-  // Create the process memory from the stack data since this will almost
-  // always be different each unwind.
-  if (!offline_map->CreateProcessMemory(stack)) {
-    if (error != nullptr) {
-      error->error_code = BACKTRACE_UNWIND_ERROR_SETUP_FAILED;
-    }
-    return false;
-  }
-  return Backtrace::Unwind(regs, back_map, frames, 0U, nullptr, error);
-}
-
 UnwindStackCurrent::UnwindStackCurrent(pid_t pid, pid_t tid, BacktraceMap* map)
     : BacktraceCurrent(pid, tid, map) {}
 
@@ -171,7 +162,7 @@
 }
 
 UnwindStackPtrace::UnwindStackPtrace(pid_t pid, pid_t tid, BacktraceMap* map)
-    : BacktracePtrace(pid, tid, map), memory_(pid) {}
+    : BacktracePtrace(pid, tid, map), memory_(unwindstack::Memory::CreateProcessMemory(pid)) {}
 
 std::string UnwindStackPtrace::GetFunctionNameRaw(uint64_t pc, uint64_t* offset) {
   return GetMap()->GetFunctionName(pc, offset);
@@ -189,73 +180,5 @@
 }
 
 size_t UnwindStackPtrace::Read(uint64_t addr, uint8_t* buffer, size_t bytes) {
-  return memory_.Read(addr, buffer, bytes);
-}
-
-UnwindStackOffline::UnwindStackOffline(ArchEnum arch, pid_t pid, pid_t tid, BacktraceMap* map,
-                                       bool map_shared)
-    : Backtrace(pid, tid, map), arch_(arch) {
-  map_shared_ = map_shared;
-}
-
-bool UnwindStackOffline::Unwind(size_t num_ignore_frames, void* ucontext) {
-  if (ucontext == nullptr) {
-    return false;
-  }
-
-  unwindstack::ArchEnum arch;
-  switch (arch_) {
-    case ARCH_ARM:
-      arch = unwindstack::ARCH_ARM;
-      break;
-    case ARCH_ARM64:
-      arch = unwindstack::ARCH_ARM64;
-      break;
-    case ARCH_X86:
-      arch = unwindstack::ARCH_X86;
-      break;
-    case ARCH_X86_64:
-      arch = unwindstack::ARCH_X86_64;
-      break;
-    default:
-      return false;
-  }
-
-  std::unique_ptr<unwindstack::Regs> regs(unwindstack::Regs::CreateFromUcontext(arch, ucontext));
-
-  return Backtrace::Unwind(regs.get(), GetMap(), &frames_, num_ignore_frames, nullptr, &error_);
-}
-
-std::string UnwindStackOffline::GetFunctionNameRaw(uint64_t, uint64_t*) {
-  return "";
-}
-
-size_t UnwindStackOffline::Read(uint64_t, uint8_t*, size_t) {
-  return 0;
-}
-
-bool UnwindStackOffline::ReadWord(uint64_t, word_t*) {
-  return false;
-}
-
-Backtrace* Backtrace::CreateOffline(ArchEnum arch, pid_t pid, pid_t tid,
-                                    const std::vector<backtrace_map_t>& maps,
-                                    const backtrace_stackinfo_t& stack) {
-  std::unique_ptr<UnwindStackOfflineMap> map(
-      reinterpret_cast<UnwindStackOfflineMap*>(BacktraceMap::CreateOffline(pid, maps)));
-  if (map.get() == nullptr || !map->CreateProcessMemory(stack)) {
-    return nullptr;
-  }
-  return new UnwindStackOffline(arch, pid, tid, map.release(), false);
-}
-
-Backtrace* Backtrace::CreateOffline(ArchEnum arch, pid_t pid, pid_t tid, BacktraceMap* map) {
-  if (map == nullptr) {
-    return nullptr;
-  }
-  return new UnwindStackOffline(arch, pid, tid, map, true);
-}
-
-void Backtrace::SetGlobalElfCache(bool enable) {
-  unwindstack::Elf::SetCachingEnabled(enable);
+  return memory_->Read(addr, buffer, bytes);
 }
diff --git a/libbacktrace/UnwindStack.h b/libbacktrace/UnwindStack.h
index 4ec591d..47f6757 100644
--- a/libbacktrace/UnwindStack.h
+++ b/libbacktrace/UnwindStack.h
@@ -19,6 +19,7 @@
 
 #include <stdint.h>
 
+#include <memory>
 #include <string>
 
 #include <backtrace/BacktraceMap.h>
@@ -49,23 +50,7 @@
   size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override;
 
  private:
-  unwindstack::MemoryRemote memory_;
-};
-
-class UnwindStackOffline : public Backtrace {
- public:
-  UnwindStackOffline(ArchEnum arch, pid_t pid, pid_t tid, BacktraceMap* map, bool map_shared);
-
-  bool Unwind(size_t num_ignore_frames, void* context) override;
-
-  std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset) override;
-
-  size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override;
-
-  bool ReadWord(uint64_t ptr, word_t* out_value) override;
-
- private:
-  ArchEnum arch_;
+  std::shared_ptr<unwindstack::Memory> memory_;
 };
 
 #endif  // _LIBBACKTRACE_UNWIND_STACK_H
diff --git a/libbacktrace/UnwindStackMap.cpp b/libbacktrace/UnwindStackMap.cpp
index 4518891..aa0b17c 100644
--- a/libbacktrace/UnwindStackMap.cpp
+++ b/libbacktrace/UnwindStackMap.cpp
@@ -132,43 +132,6 @@
   return process_memory_;
 }
 
-UnwindStackOfflineMap::UnwindStackOfflineMap(pid_t pid) : UnwindStackMap(pid) {}
-
-bool UnwindStackOfflineMap::Build() {
-  return false;
-}
-
-bool UnwindStackOfflineMap::Build(const std::vector<backtrace_map_t>& backtrace_maps) {
-  for (const backtrace_map_t& map : backtrace_maps) {
-    maps_.push_back(map);
-  }
-
-  std::sort(maps_.begin(), maps_.end(),
-            [](const backtrace_map_t& a, const backtrace_map_t& b) { return a.start < b.start; });
-
-  unwindstack::Maps* maps = new unwindstack::Maps;
-  stack_maps_.reset(maps);
-  for (const backtrace_map_t& map : maps_) {
-    maps->Add(map.start, map.end, map.offset, map.flags, map.name, map.load_bias);
-  }
-  return true;
-}
-
-bool UnwindStackOfflineMap::CreateProcessMemory(const backtrace_stackinfo_t& stack) {
-  if (stack.start >= stack.end) {
-    return false;
-  }
-
-  // Create the process memory from the stack data.
-  if (memory_ == nullptr) {
-    memory_ = new unwindstack::MemoryOfflineBuffer(stack.data, stack.start, stack.end);
-    process_memory_.reset(memory_);
-  } else {
-    memory_->Reset(stack.data, stack.start, stack.end);
-  }
-  return true;
-}
-
 //-------------------------------------------------------------------------
 // BacktraceMap create function.
 //-------------------------------------------------------------------------
@@ -189,15 +152,3 @@
   }
   return map;
 }
-
-//-------------------------------------------------------------------------
-// BacktraceMap create offline function.
-//-------------------------------------------------------------------------
-BacktraceMap* BacktraceMap::CreateOffline(pid_t pid, const std::vector<backtrace_map_t>& maps) {
-  UnwindStackOfflineMap* map = new UnwindStackOfflineMap(pid);
-  if (!map->Build(maps)) {
-    delete map;
-    return nullptr;
-  }
-  return map;
-}
diff --git a/libbacktrace/UnwindStackMap.h b/libbacktrace/UnwindStackMap.h
index e19b605..f0e7d8b 100644
--- a/libbacktrace/UnwindStackMap.h
+++ b/libbacktrace/UnwindStackMap.h
@@ -33,6 +33,7 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/JitDebug.h>
 #include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
 
 // Forward declarations.
 class UnwindDexFile;
@@ -74,19 +75,4 @@
   unwindstack::ArchEnum arch_ = unwindstack::ARCH_UNKNOWN;
 };
 
-class UnwindStackOfflineMap : public UnwindStackMap {
- public:
-  UnwindStackOfflineMap(pid_t pid);
-  ~UnwindStackOfflineMap() = default;
-
-  bool Build() override;
-
-  bool Build(const std::vector<backtrace_map_t>& maps);
-
-  bool CreateProcessMemory(const backtrace_stackinfo_t& stack);
-
- private:
-  unwindstack::MemoryOfflineBuffer* memory_ = nullptr;
-};
-
 #endif  // _LIBBACKTRACE_UNWINDSTACK_MAP_H
diff --git a/libbacktrace/backtrace_offline_test.cpp b/libbacktrace/backtrace_offline_test.cpp
deleted file mode 100644
index 662fb99..0000000
--- a/libbacktrace/backtrace_offline_test.cpp
+++ /dev/null
@@ -1,397 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <inttypes.h>
-#include <pthread.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <functional>
-#include <memory>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/threads.h>
-#include <backtrace/Backtrace.h>
-#include <backtrace/BacktraceMap.h>
-
-#include <gtest/gtest.h>
-
-#include "BacktraceTest.h"
-
-struct FunctionSymbol {
-  std::string name;
-  uint64_t start;
-  uint64_t end;
-};
-
-static std::vector<FunctionSymbol> GetFunctionSymbols() {
-  std::vector<FunctionSymbol> symbols = {
-      {"unknown_start", 0, 0},
-      {"test_level_one", reinterpret_cast<uint64_t>(&BacktraceTest::test_level_one_), 0},
-      {"test_level_two", reinterpret_cast<uint64_t>(&BacktraceTest::test_level_two_), 0},
-      {"test_level_three", reinterpret_cast<uint64_t>(&BacktraceTest::test_level_three_), 0},
-      {"test_level_four", reinterpret_cast<uint64_t>(&BacktraceTest::test_level_four_), 0},
-      {"test_recursive_call", reinterpret_cast<uint64_t>(&BacktraceTest::test_recursive_call_), 0},
-      {"test_get_context_and_wait",
-       reinterpret_cast<uint64_t>(&BacktraceTest::test_get_context_and_wait_), 0},
-      {"unknown_end", static_cast<uint64_t>(-1), static_cast<uint64_t>(-1)},
-  };
-  std::sort(
-      symbols.begin(), symbols.end(),
-      [](const FunctionSymbol& s1, const FunctionSymbol& s2) { return s1.start < s2.start; });
-  for (size_t i = 0; i + 1 < symbols.size(); ++i) {
-    symbols[i].end = symbols[i + 1].start;
-  }
-  return symbols;
-}
-
-static std::string RawDataToHexString(const void* data, size_t size) {
-  const uint8_t* p = static_cast<const uint8_t*>(data);
-  std::string s;
-  for (size_t i = 0; i < size; ++i) {
-    s += android::base::StringPrintf("%02x", p[i]);
-  }
-  return s;
-}
-
-static void HexStringToRawData(const char* s, std::vector<uint8_t>* data, size_t size) {
-  for (size_t i = 0; i < size; ++i) {
-    int value;
-    sscanf(s, "%02x", &value);
-    data->push_back(value);
-    s += 2;
-  }
-}
-
-struct OfflineThreadArg {
-  std::vector<uint8_t> ucontext;
-  pid_t tid;
-  volatile int exit_flag;
-};
-
-static void* OfflineThreadFunc(void* arg) {
-  OfflineThreadArg* fn_arg = reinterpret_cast<OfflineThreadArg*>(arg);
-  fn_arg->tid = android::base::GetThreadId();
-  BacktraceTest::test_get_context_and_wait_(&fn_arg->ucontext, &fn_arg->exit_flag);
-  return nullptr;
-}
-
-std::string GetTestPath(const std::string& arch, const std::string& path) {
-  return android::base::GetExecutableDirectory() + "/testdata/" + arch + '/' + path;
-}
-
-// This test is disable because it is for generating test data.
-TEST_F(BacktraceTest, DISABLED_generate_offline_testdata) {
-  // Create a thread to generate the needed stack and registers information.
-  const size_t stack_size = 16 * 1024;
-  void* stack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-  ASSERT_NE(MAP_FAILED, stack);
-  uint64_t stack_addr = reinterpret_cast<uint64_t>(stack);
-  pthread_attr_t attr;
-  ASSERT_EQ(0, pthread_attr_init(&attr));
-  ASSERT_EQ(0, pthread_attr_setstack(&attr, reinterpret_cast<void*>(stack), stack_size));
-  pthread_t thread;
-  OfflineThreadArg arg;
-  arg.exit_flag = 0;
-  ASSERT_EQ(0, pthread_create(&thread, &attr, OfflineThreadFunc, &arg));
-  // Wait for the offline thread to generate the stack and context information.
-  sleep(1);
-  // Copy the stack information.
-  std::vector<uint8_t> stack_data(reinterpret_cast<uint8_t*>(stack),
-                                  reinterpret_cast<uint8_t*>(stack) + stack_size);
-  arg.exit_flag = 1;
-  ASSERT_EQ(0, pthread_join(thread, nullptr));
-  ASSERT_EQ(0, munmap(stack, stack_size));
-
-  std::unique_ptr<BacktraceMap> map(BacktraceMap::Create(getpid()));
-  ASSERT_TRUE(map != nullptr);
-
-  backtrace_stackinfo_t stack_info;
-  stack_info.start = stack_addr;
-  stack_info.end = stack_addr + stack_size;
-  stack_info.data = stack_data.data();
-
-  // Generate offline testdata.
-  std::string testdata;
-  // 1. Dump pid, tid
-  testdata += android::base::StringPrintf("pid: %d tid: %d\n", getpid(), arg.tid);
-  // 2. Dump maps
-  for (auto it = map->begin(); it != map->end(); ++it) {
-    const backtrace_map_t* entry = *it;
-    testdata +=
-        android::base::StringPrintf("map: start: %" PRIx64 " end: %" PRIx64 " offset: %" PRIx64
-                                    " load_bias: %" PRIx64 " flags: %d name: %s\n",
-                                    entry->start, entry->end, entry->offset, entry->load_bias,
-                                    entry->flags, entry->name.c_str());
-  }
-  // 3. Dump ucontext
-  testdata += android::base::StringPrintf("ucontext: %zu ", arg.ucontext.size());
-  testdata += RawDataToHexString(arg.ucontext.data(), arg.ucontext.size());
-  testdata.push_back('\n');
-
-  // 4. Dump stack
-  testdata += android::base::StringPrintf(
-      "stack: start: %" PRIx64 " end: %" PRIx64 " size: %zu ",
-      stack_info.start, stack_info.end, stack_data.size());
-  testdata += RawDataToHexString(stack_data.data(), stack_data.size());
-  testdata.push_back('\n');
-
-  // 5. Dump function symbols
-  std::vector<FunctionSymbol> function_symbols = GetFunctionSymbols();
-  for (const auto& symbol : function_symbols) {
-    testdata +=
-        android::base::StringPrintf("function: start: %" PRIx64 " end: %" PRIx64 " name: %s\n",
-                                    symbol.start, symbol.end, symbol.name.c_str());
-  }
-
-  ASSERT_TRUE(android::base::WriteStringToFile(testdata, "offline_testdata"));
-}
-
-// Return the name of the function which matches the address. Although we don't know the
-// exact end of each function, it is accurate enough for the tests.
-static std::string FunctionNameForAddress(uint64_t addr,
-                                          const std::vector<FunctionSymbol>& symbols) {
-  for (auto& symbol : symbols) {
-    if (addr >= symbol.start && addr < symbol.end) {
-      return symbol.name;
-    }
-  }
-  return "";
-}
-
-struct OfflineTestData {
-  int pid;
-  int tid;
-  std::vector<backtrace_map_t> maps;
-  std::vector<uint8_t> ucontext;
-  backtrace_stackinfo_t stack_info;
-  std::vector<uint8_t> stack;
-  std::vector<FunctionSymbol> symbols;
-};
-
-bool ReadOfflineTestData(const std::string offline_testdata_path, OfflineTestData* testdata) {
-  std::string s;
-  if (!android::base::ReadFileToString(offline_testdata_path, &s)) {
-    return false;
-  }
-  // Parse offline_testdata.
-  std::vector<std::string> lines = android::base::Split(s, "\n");
-  for (const auto& line : lines) {
-    if (android::base::StartsWith(line, "pid:")) {
-      sscanf(line.c_str(), "pid: %d tid: %d", &testdata->pid, &testdata->tid);
-    } else if (android::base::StartsWith(line, "map:")) {
-      testdata->maps.resize(testdata->maps.size() + 1);
-      backtrace_map_t& map = testdata->maps.back();
-      int pos;
-      sscanf(line.c_str(),
-             "map: start: %" SCNx64 " end: %" SCNx64 " offset: %" SCNx64 " load_bias: %" SCNx64
-             " flags: %d name: %n",
-             &map.start, &map.end, &map.offset, &map.load_bias, &map.flags, &pos);
-      map.name = android::base::Trim(line.substr(pos));
-    } else if (android::base::StartsWith(line, "ucontext:")) {
-      size_t size;
-      int pos;
-      testdata->ucontext.clear();
-      sscanf(line.c_str(), "ucontext: %zu %n", &size, &pos);
-      HexStringToRawData(&line[pos], &testdata->ucontext, size);
-    } else if (android::base::StartsWith(line, "stack:")) {
-      size_t size;
-      int pos;
-      sscanf(line.c_str(),
-             "stack: start: %" SCNx64 " end: %" SCNx64 " size: %zu %n",
-             &testdata->stack_info.start, &testdata->stack_info.end, &size, &pos);
-      CHECK_EQ(testdata->stack_info.end - testdata->stack_info.start, size);
-      testdata->stack.clear();
-      HexStringToRawData(&line[pos], &testdata->stack, size);
-      testdata->stack_info.data = testdata->stack.data();
-    } else if (android::base::StartsWith(line, "function:")) {
-      testdata->symbols.resize(testdata->symbols.size() + 1);
-      FunctionSymbol& symbol = testdata->symbols.back();
-      int pos;
-      sscanf(line.c_str(), "function: start: %" SCNx64 " end: %" SCNx64 " name: %n", &symbol.start,
-             &symbol.end, &pos);
-      symbol.name = line.substr(pos);
-    }
-  }
-  return true;
-}
-
-static void BacktraceOfflineTest(std::string arch_str, const std::string& testlib_name) {
-  const std::string testlib_path(GetTestPath(arch_str, testlib_name));
-  const std::string offline_testdata_path(GetTestPath(arch_str, "offline_testdata"));
-  OfflineTestData testdata;
-  ASSERT_TRUE(ReadOfflineTestData(offline_testdata_path, &testdata)) << "Failed " << arch_str;
-
-  // Fix path of libbacktrace_testlib.so.
-  for (auto& map : testdata.maps) {
-    if (map.name.find("libbacktrace_test.so") != std::string::npos) {
-      map.name = testlib_path;
-    }
-  }
-
-  Backtrace::ArchEnum arch;
-  if (arch_str == "arm") {
-    arch = Backtrace::ARCH_ARM;
-  } else if (arch_str == "arm64") {
-    arch = Backtrace::ARCH_ARM64;
-  } else if (arch_str == "x86") {
-    arch = Backtrace::ARCH_X86;
-  } else if (arch_str == "x86_64") {
-    arch = Backtrace::ARCH_X86_64;
-  } else {
-    abort();
-  }
-
-  std::unique_ptr<Backtrace> backtrace(Backtrace::CreateOffline(
-      arch, testdata.pid, testdata.tid, testdata.maps, testdata.stack_info));
-  ASSERT_TRUE(backtrace != nullptr) << "Failed " << arch_str;
-
-  ASSERT_TRUE(backtrace->Unwind(0, testdata.ucontext.data())) << "Failed " << arch_str;
-
-  // Collect pc values of the call stack frames.
-  std::vector<uint64_t> pc_values;
-  for (size_t i = 0; i < backtrace->NumFrames(); ++i) {
-    pc_values.push_back(backtrace->GetFrame(i)->pc);
-  }
-
-  size_t test_one_index = 0;
-  for (size_t i = 0; i < pc_values.size(); ++i) {
-    if (FunctionNameForAddress(pc_values[i], testdata.symbols) == "test_level_one") {
-      test_one_index = i;
-      break;
-    }
-  }
-
-  ASSERT_GE(test_one_index, 3u) << "Failed " << arch_str;
-  ASSERT_EQ("test_level_one", FunctionNameForAddress(pc_values[test_one_index], testdata.symbols))
-      << "Failed " << arch_str;
-  ASSERT_EQ("test_level_two", FunctionNameForAddress(pc_values[test_one_index - 1], testdata.symbols))
-      << "Failed " << arch_str;
-  ASSERT_EQ("test_level_three",
-            FunctionNameForAddress(pc_values[test_one_index - 2], testdata.symbols))
-      << "Failed " << arch_str;
-  ASSERT_EQ("test_level_four",
-            FunctionNameForAddress(pc_values[test_one_index - 3], testdata.symbols))
-      << "Failed " << arch_str;
-}
-
-// For now, these tests can only run on the given architectures.
-TEST_F(BacktraceTest, offline_eh_frame) {
-  BacktraceOfflineTest("arm64", "libbacktrace_test_eh_frame.so");
-  BacktraceOfflineTest("x86_64", "libbacktrace_test_eh_frame.so");
-}
-
-TEST_F(BacktraceTest, offline_debug_frame) {
-  BacktraceOfflineTest("arm", "libbacktrace_test_debug_frame.so");
-  BacktraceOfflineTest("x86", "libbacktrace_test_debug_frame.so");
-}
-
-TEST_F(BacktraceTest, offline_gnu_debugdata) {
-  BacktraceOfflineTest("arm", "libbacktrace_test_gnu_debugdata.so");
-  BacktraceOfflineTest("x86", "libbacktrace_test_gnu_debugdata.so");
-}
-
-TEST_F(BacktraceTest, offline_arm_exidx) {
-  BacktraceOfflineTest("arm", "libbacktrace_test_arm_exidx.so");
-}
-
-static void LibUnwindingTest(const std::string& arch_str, const std::string& testdata_name,
-                             const std::string& testlib_name) {
-  const std::string testlib_path(GetTestPath(arch_str, testlib_name));
-  struct stat st;
-  ASSERT_EQ(0, stat(testlib_path.c_str(), &st)) << "can't find testlib " << testlib_path;
-
-  const std::string offline_testdata_path(GetTestPath(arch_str, testdata_name));
-  OfflineTestData testdata;
-  ASSERT_TRUE(ReadOfflineTestData(offline_testdata_path, &testdata));
-
-  // Fix path of the testlib.
-  for (auto& map : testdata.maps) {
-    if (map.name.find(testlib_name) != std::string::npos) {
-      map.name = testlib_path;
-    }
-  }
-
-  Backtrace::ArchEnum arch;
-  if (arch_str == "arm") {
-    arch = Backtrace::ARCH_ARM;
-  } else if (arch_str == "arm64") {
-    arch = Backtrace::ARCH_ARM64;
-  } else if (arch_str == "x86") {
-    arch = Backtrace::ARCH_X86;
-  } else if (arch_str == "x86_64") {
-    arch = Backtrace::ARCH_X86_64;
-  } else {
-    ASSERT_TRUE(false) << "Unsupported arch " << arch_str;
-    abort();
-  }
-
-  // Do offline backtrace.
-  std::unique_ptr<Backtrace> backtrace(Backtrace::CreateOffline(
-      arch, testdata.pid, testdata.tid, testdata.maps, testdata.stack_info));
-  ASSERT_TRUE(backtrace != nullptr);
-
-  ASSERT_TRUE(backtrace->Unwind(0, testdata.ucontext.data()));
-
-  ASSERT_EQ(testdata.symbols.size(), backtrace->NumFrames());
-  for (size_t i = 0; i < backtrace->NumFrames(); ++i) {
-    std::string name = FunctionNameForAddress(backtrace->GetFrame(i)->rel_pc, testdata.symbols);
-    ASSERT_EQ(name, testdata.symbols[i].name);
-  }
-  ASSERT_TRUE(backtrace->GetError().error_code == BACKTRACE_UNWIND_ERROR_ACCESS_MEM_FAILED ||
-              backtrace->GetError().error_code == BACKTRACE_UNWIND_ERROR_MAP_MISSING ||
-              backtrace->GetError().error_code == BACKTRACE_UNWIND_ERROR_REPEATED_FRAME);
-}
-
-// This test tests the situation that ranges of functions covered by .eh_frame and .ARM.exidx
-// overlap with each other, which appears in /system/lib/libart.so.
-TEST_F(BacktraceTest, offline_unwind_mix_eh_frame_and_arm_exidx) {
-  LibUnwindingTest("arm", "offline_testdata_for_libart", "libart.so");
-}
-
-TEST_F(BacktraceTest, offline_debug_frame_with_load_bias) {
-  LibUnwindingTest("arm", "offline_testdata_for_libandroid_runtime", "libandroid_runtime.so");
-}
-
-TEST_F(BacktraceTest, offline_try_armexidx_after_debug_frame) {
-  LibUnwindingTest("arm", "offline_testdata_for_libGLESv2_adreno", "libGLESv2_adreno.so");
-}
-
-TEST_F(BacktraceTest, offline_cie_with_P_augmentation) {
-  // Make sure we can unwind through functions with CIE entry containing P augmentation, which
-  // makes unwinding library reading personality handler from memory. One example is
-  // /system/lib64/libskia.so.
-  LibUnwindingTest("arm64", "offline_testdata_for_libskia", "libskia.so");
-}
-
-TEST_F(BacktraceTest, offline_empty_eh_frame_hdr) {
-  // Make sure we can unwind through libraries with empty .eh_frame_hdr section. One example is
-  // /vendor/lib64/egl/eglSubDriverAndroid.so.
-  LibUnwindingTest("arm64", "offline_testdata_for_eglSubDriverAndroid", "eglSubDriverAndroid.so");
-}
-
-TEST_F(BacktraceTest, offline_max_frames_limit) {
-  // The length of callchain can reach 256 when recording an application.
-  ASSERT_GE(MAX_BACKTRACE_FRAMES, 256);
-}
diff --git a/libbacktrace/include/backtrace/Backtrace.h b/libbacktrace/include/backtrace/Backtrace.h
index 404e7e8..664b531 100644
--- a/libbacktrace/include/backtrace/Backtrace.h
+++ b/libbacktrace/include/backtrace/Backtrace.h
@@ -126,24 +126,6 @@
   // If map is not NULL, the map is still owned by the caller.
   static Backtrace* Create(pid_t pid, pid_t tid, BacktraceMap* map = nullptr);
 
-  // Create an offline Backtrace object that can be used to do an unwind without a process
-  // that is still running. By default, information is only cached in the map
-  // file. If the calling code creates the map, data can be cached between
-  // unwinds. If not, all cached data will be destroyed when the Backtrace
-  // object is destroyed.
-  static Backtrace* CreateOffline(ArchEnum arch, pid_t pid, pid_t tid,
-                                  const std::vector<backtrace_map_t>& maps,
-                                  const backtrace_stackinfo_t& stack);
-  static Backtrace* CreateOffline(ArchEnum arch, pid_t pid, pid_t tid, BacktraceMap* map);
-
-  // Create an offline Backtrace object that can be used to do an unwind without a process
-  // that is still running. If cache_file is set to true, then elf information will be cached
-  // for this call. The cached information survives until the calling process ends. This means
-  // that subsequent calls to create offline Backtrace objects will continue to use the same
-  // cache. It also assumes that the elf files used for each offline unwind are the same.
-  static Backtrace* CreateOffline(pid_t pid, pid_t tid, BacktraceMap* map,
-                                  const backtrace_stackinfo_t& stack, bool cache_file = false);
-
   virtual ~Backtrace();
 
   // Get the current stack trace and store in the backtrace_ structure.
@@ -153,11 +135,6 @@
                      std::vector<backtrace_frame_data_t>* frames, size_t num_ignore_frames,
                      std::vector<std::string>* skip_names, BacktraceUnwindError* error = nullptr);
 
-  static bool UnwindOffline(unwindstack::Regs* regs, BacktraceMap* back_map,
-                            const backtrace_stackinfo_t& stack_info,
-                            std::vector<backtrace_frame_data_t>* frames,
-                            BacktraceUnwindError* error = nullptr);
-
   // Get the function name and offset into the function given the pc.
   // If the string is empty, then no valid function name was found,
   // or the pc is not in any valid map.
diff --git a/libbacktrace/include/backtrace/BacktraceMap.h b/libbacktrace/include/backtrace/BacktraceMap.h
index c564271..e000a00 100644
--- a/libbacktrace/include/backtrace/BacktraceMap.h
+++ b/libbacktrace/include/backtrace/BacktraceMap.h
@@ -69,8 +69,6 @@
   // is unsupported.
   static BacktraceMap* Create(pid_t pid, bool uncached = false);
 
-  static BacktraceMap* CreateOffline(pid_t pid, const std::vector<backtrace_map_t>& maps);
-
   virtual ~BacktraceMap();
 
   class iterator : public std::iterator<std::bidirectional_iterator_tag, backtrace_map_t*> {
@@ -81,7 +79,7 @@
       index_++;
       return *this;
     }
-    iterator& operator++(int increment) {
+    const iterator operator++(int increment) {
       index_ += increment;
       return *this;
     }
@@ -89,7 +87,7 @@
       index_--;
       return *this;
     }
-    iterator& operator--(int decrement) {
+    const iterator operator--(int decrement) {
       index_ -= decrement;
       return *this;
     }
diff --git a/libcrypto_utils/Android.bp b/libcrypto_utils/Android.bp
index e47560f..d7175e0 100644
--- a/libcrypto_utils/Android.bp
+++ b/libcrypto_utils/Android.bp
@@ -38,4 +38,8 @@
             enabled: true,
         },
     },
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.adbd",
+    ],
 }
diff --git a/libcutils/Android.bp b/libcutils/Android.bp
index 619bc56..24110ee 100644
--- a/libcutils/Android.bp
+++ b/libcutils/Android.bp
@@ -21,11 +21,6 @@
     "fs.cpp",
     "hashmap.cpp",
     "multiuser.cpp",
-    "socket_inaddr_any_server_unix.cpp",
-    "socket_local_client_unix.cpp",
-    "socket_local_server_unix.cpp",
-    "socket_network_client_unix.cpp",
-    "sockets_unix.cpp",
     "str_parms.cpp",
 ]
 
@@ -34,6 +29,12 @@
     vendor_available: true,
     recovery_available: true,
     host_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "29",
+    native_bridge_supported: true,
     export_include_dirs: ["include"],
     target: {
         vendor: {
@@ -48,6 +49,88 @@
     },
 }
 
+// Socket specific parts of libcutils that are safe to statically link into an APEX.
+cc_library {
+    name: "libcutils_sockets",
+    vendor_available: true,
+    recovery_available: true,
+    host_supported: true,
+    native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "29",
+
+    export_include_dirs: ["include"],
+
+    shared_libs: ["liblog"],
+    srcs: ["sockets.cpp"],
+    target: {
+        linux_bionic: {
+            enabled: true,
+        },
+
+        not_windows: {
+            srcs: [
+                "socket_inaddr_any_server_unix.cpp",
+                "socket_local_client_unix.cpp",
+                "socket_local_server_unix.cpp",
+                "socket_network_client_unix.cpp",
+                "sockets_unix.cpp",
+            ],
+        },
+
+        // "not_windows" means "non-Windows host".
+        android: {
+            srcs: [
+                "android_get_control_file.cpp",
+                "socket_inaddr_any_server_unix.cpp",
+                "socket_local_client_unix.cpp",
+                "socket_local_server_unix.cpp",
+                "socket_network_client_unix.cpp",
+                "sockets_unix.cpp",
+            ],
+            static_libs: ["libbase"],
+        },
+
+        windows: {
+            host_ldlibs: ["-lws2_32"],
+            srcs: [
+                "socket_inaddr_any_server_windows.cpp",
+                "socket_network_client_windows.cpp",
+                "sockets_windows.cpp",
+            ],
+
+            enabled: true,
+            cflags: [
+                "-D_GNU_SOURCE",
+            ],
+        },
+    },
+}
+
+cc_test {
+    name: "libcutils_sockets_test",
+    test_suites: ["device-tests"],
+    static_libs: ["libbase", "libcutils_sockets"],
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+
+    srcs: ["sockets_test.cpp"],
+    target: {
+        android: {
+            srcs: [
+                "android_get_control_file_test.cpp",
+                "android_get_control_socket_test.cpp",
+            ],
+        },
+    },
+}
+
 cc_library {
     name: "libcutils",
     vendor_available: true,
@@ -57,6 +140,12 @@
     },
     recovery_available: true,
     host_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "29",
+    native_bridge_supported: true,
     srcs: [
         "config_utils.cpp",
         "canned_fs_config.cpp",
@@ -64,9 +153,6 @@
         "load_file.cpp",
         "native_handle.cpp",
         "record_stream.cpp",
-        "sockets.cpp",
-        "strdup16to8.cpp",
-        "strdup8to16.cpp",
         "strlcpy.c",
         "threads.cpp",
     ],
@@ -86,9 +172,6 @@
             host_ldlibs: ["-lws2_32"],
 
             srcs: [
-                "socket_inaddr_any_server_windows.cpp",
-                "socket_network_client_windows.cpp",
-                "sockets_windows.cpp",
                 "trace-host.cpp",
             ],
 
@@ -97,10 +180,8 @@
                 "-D_GNU_SOURCE",
             ],
         },
-
         android: {
             srcs: libcutils_nonwindows_sources + [
-                "android_get_control_file.cpp",
                 "android_reboot.cpp",
                 "ashmem-dev.cpp",
                 "fs_config.cpp",
@@ -114,36 +195,17 @@
         },
 
         android_arm: {
-            srcs: ["arch-arm/memset32.S"],
             sanitize: {
                 misc_undefined: ["integer"],
             },
         },
         android_arm64: {
-            srcs: ["arch-arm64/android_memset.S"],
-            sanitize: {
-                misc_undefined: ["integer"],
-            },
-        },
-
-        android_mips: {
-            srcs: ["arch-mips/android_memset.c"],
-            sanitize: {
-                misc_undefined: ["integer"],
-            },
-        },
-        android_mips64: {
-            srcs: ["arch-mips/android_memset.c"],
             sanitize: {
                 misc_undefined: ["integer"],
             },
         },
 
         android_x86: {
-            srcs: [
-                "arch-x86/android_memset16.S",
-                "arch-x86/android_memset32.S",
-            ],
             // TODO: This is to work around b/29412086.
             // Remove once __mulodi4 is available and move the "sanitize" block
             // to the android target.
@@ -153,10 +215,6 @@
         },
 
         android_x86_64: {
-            srcs: [
-                "arch-x86_64/android_memset16.S",
-                "arch-x86_64/android_memset32.S",
-            ],
             sanitize: {
                 misc_undefined: ["integer"],
             },
@@ -172,6 +230,7 @@
         }
     },
 
+    whole_static_libs: ["libcutils_sockets"],
     shared_libs: [
         "liblog",
         "libbase",
@@ -197,7 +256,10 @@
 
 cc_defaults {
     name: "libcutils_test_default",
-    srcs: ["sockets_test.cpp"],
+    srcs: [
+        "native_handle_test.cpp",
+        "sockets_test.cpp",
+    ],
 
     target: {
         android: {
@@ -206,7 +268,6 @@
                 "android_get_control_socket_test.cpp",
                 "ashmem_test.cpp",
                 "fs_config_test.cpp",
-                "memset_test.cpp",
                 "multiuser_test.cpp",
                 "properties_test.cpp",
                 "sched_policy_test.cpp",
@@ -244,17 +305,18 @@
     defaults: ["libcutils_test_default"],
     host_supported: true,
     shared_libs: test_libraries,
+    require_root: true,
 }
 
-cc_test {
-    name: "libcutils_test_static",
-    test_suites: ["device-tests"],
+cc_defaults {
+    name: "libcutils_test_static_defaults",
     defaults: ["libcutils_test_default"],
     static_libs: [
         "libc",
         "libcgrouprc_format",
     ] + test_libraries,
     stl: "libc++_static",
+    require_root: true,
 
     target: {
         android: {
@@ -267,3 +329,16 @@
         },
     },
 }
+
+cc_test {
+    name: "libcutils_test_static",
+    test_suites: ["device-tests"],
+    defaults: ["libcutils_test_static_defaults"],
+}
+
+cc_test {
+    name: "KernelLibcutilsTest",
+    test_suites: ["general-tests", "vts"],
+    defaults: ["libcutils_test_static_defaults"],
+    test_config: "KernelLibcutilsTest.xml",
+}
diff --git a/libcutils/KernelLibcutilsTest.xml b/libcutils/KernelLibcutilsTest.xml
new file mode 100644
index 0000000..40e4ef4
--- /dev/null
+++ b/libcutils/KernelLibcutilsTest.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Runs KernelLibcutilsTest.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-native" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer">
+    </target_preparer>
+
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="KernelLibcutilsTest->/data/local/tmp/KernelLibcutilsTest" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="KernelLibcutilsTest" />
+        <option name="include-filter" value="*AshmemTest*" />
+    </test>
+</configuration>
diff --git a/libcutils/arch-arm/memset32.S b/libcutils/arch-arm/memset32.S
deleted file mode 100644
index 1e89636..0000000
--- a/libcutils/arch-arm/memset32.S
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright (C) 2006 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*
- *  memset32.S
- *
- */
-
-    .syntax unified
-
-    .text
-    .align
-
-    .global android_memset32
-    .type   android_memset32, %function
-    .global android_memset16
-    .type   android_memset16, %function
-
-        /*
-         * Optimized memset32 and memset16 for ARM.
-         *
-         * void android_memset16(uint16_t* dst, uint16_t value, size_t size);
-         * void android_memset32(uint32_t* dst, uint32_t value, size_t size);
-         *
-         */
-
-android_memset16:
-        .fnstart
-        cmp         r2, #1
-        bxle        lr
-
-        /* expand the data to 32 bits */
-        mov         r1, r1, lsl #16
-        orr         r1, r1, r1, lsr #16
-
-        /* align to 32 bits */
-        tst         r0, #2
-        strhne      r1, [r0], #2
-        subne       r2, r2, #2
-        .fnend
-
-android_memset32:
-        .fnstart
-        .cfi_startproc
-        str         lr, [sp, #-4]!
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        /* align the destination to a cache-line */
-        mov         r12, r1
-        mov         lr, r1
-        rsb         r3, r0, #0
-        ands        r3, r3, #0x1C
-        beq         .Laligned32
-        cmp         r3, r2
-        andhi       r3, r2, #0x1C
-        sub         r2, r2, r3
-
-        /* conditionally writes 0 to 7 words (length in r3) */
-        movs        r3, r3, lsl #28
-        stmiacs     r0!, {r1, lr}
-        stmiacs     r0!, {r1, lr}
-        stmiami     r0!, {r1, lr}
-        movs        r3, r3, lsl #2
-        strcs       r1, [r0], #4
-
-.Laligned32:
-        mov         r3, r1
-1:      subs        r2, r2, #32
-        stmiahs     r0!, {r1,r3,r12,lr}
-        stmiahs     r0!, {r1,r3,r12,lr}
-        bhs         1b
-        add         r2, r2, #32
-
-        /* conditionally stores 0 to 30 bytes */
-        movs        r2, r2, lsl #28
-        stmiacs     r0!, {r1,r3,r12,lr}
-        stmiami     r0!, {r1,lr}
-        movs        r2, r2, lsl #2
-        strcs       r1, [r0], #4
-        strhmi      lr, [r0], #2
-
-        ldr         lr, [sp], #4
-        .cfi_def_cfa_offset 0
-        .cfi_restore lr
-        bx          lr
-        .cfi_endproc
-        .fnend
diff --git a/libcutils/arch-arm64/android_memset.S b/libcutils/arch-arm64/android_memset.S
deleted file mode 100644
index 9a83a68..0000000
--- a/libcutils/arch-arm64/android_memset.S
+++ /dev/null
@@ -1,211 +0,0 @@
-/* Copyright (c) 2012, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-         names of its contributors may be used to endorse or promote products
-         derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64
- * Unaligned accesses
- *
- */
-
-/* By default we assume that the DC instruction can be used to zero
-   data blocks more efficiently.  In some circumstances this might be
-   unsafe, for example in an asymmetric multiprocessor environment with
-   different DC clear lengths (neither the upper nor lower lengths are
-   safe to use). */
-
-#define dst  		x0
-#define count		x2
-#define tmp1		x3
-#define tmp1w		w3
-#define tmp2		x4
-#define tmp2w		w4
-#define zva_len_x	x5
-#define zva_len		w5
-#define zva_bits_x	x6
-
-#define A_l		x1
-#define A_lw		w1
-#define tmp3w		w9
-
-#define ENTRY(f) \
-  .text; \
-  .globl f; \
-  .align 0; \
-  .type f, %function; \
-  f: \
-  .cfi_startproc \
-
-#define END(f) \
-  .cfi_endproc; \
-  .size f, .-f; \
-
-ENTRY(android_memset16)
-	ands   A_lw, A_lw, #0xffff
-	b.eq	.Lzero_mem
-	orr	A_lw, A_lw, A_lw, lsl #16
-	b .Lexpand_to_64
-END(android_memset16)
-
-ENTRY(android_memset32)
-	cmp	    A_lw, #0
-	b.eq	.Lzero_mem
-.Lexpand_to_64:
-	orr	A_l, A_l, A_l, lsl #32
-.Ltail_maybe_long:
-	cmp	count, #64
-	b.ge	.Lnot_short
-.Ltail_maybe_tiny:
-	cmp	count, #15
-	b.le	.Ltail15tiny
-.Ltail63:
-	ands	tmp1, count, #0x30
-	b.eq	.Ltail15
-	add	dst, dst, tmp1
-	cmp	tmp1w, #0x20
-	b.eq	1f
-	b.lt	2f
-	stp	A_l, A_l, [dst, #-48]
-1:
-	stp	A_l, A_l, [dst, #-32]
-2:
-	stp	A_l, A_l, [dst, #-16]
-
-.Ltail15:
-	and	count, count, #15
-	add	dst, dst, count
-	stp	A_l, A_l, [dst, #-16]	/* Repeat some/all of last store. */
-	ret
-
-.Ltail15tiny:
-	/* Set up to 15 bytes.  Does not assume earlier memory
-	   being set.  */
-	tbz	count, #3, 1f
-	str	A_l, [dst], #8
-1:
-	tbz	count, #2, 1f
-	str	A_lw, [dst], #4
-1:
-	tbz	count, #1, 1f
-	strh	A_lw, [dst], #2
-1:
-	ret
-
-	/* Critical loop.  Start at a new cache line boundary.  Assuming
-	 * 64 bytes per line, this ensures the entire loop is in one line.  */
-	.p2align 6
-.Lnot_short:
-	neg	tmp2, dst
-	ands	tmp2, tmp2, #15
-	b.eq	2f
-	/* Bring DST to 128-bit (16-byte) alignment.  We know that there's
-	 * more than that to set, so we simply store 16 bytes and advance by
-	 * the amount required to reach alignment.  */
-	sub	count, count, tmp2
-	stp	A_l, A_l, [dst]
-	add	dst, dst, tmp2
-	/* There may be less than 63 bytes to go now.  */
-	cmp	count, #63
-	b.le	.Ltail63
-2:
-	sub	dst, dst, #16		/* Pre-bias.  */
-	sub	count, count, #64
-1:
-	stp	A_l, A_l, [dst, #16]
-	stp	A_l, A_l, [dst, #32]
-	stp	A_l, A_l, [dst, #48]
-	stp	A_l, A_l, [dst, #64]!
-	subs	count, count, #64
-	b.ge	1b
-	tst	count, #0x3f
-	add	dst, dst, #16
-	b.ne	.Ltail63
-	ret
-
-	/* For zeroing memory, check to see if we can use the ZVA feature to
-	 * zero entire 'cache' lines.  */
-.Lzero_mem:
-	mov	A_l, #0
-	cmp	count, #63
-	b.le	.Ltail_maybe_tiny
-	neg	tmp2, dst
-	ands	tmp2, tmp2, #15
-	b.eq	1f
-	sub	count, count, tmp2
-	stp	A_l, A_l, [dst]
-	add	dst, dst, tmp2
-	cmp	count, #63
-	b.le	.Ltail63
-1:
-	/* For zeroing small amounts of memory, it's not worth setting up
-	 * the line-clear code.  */
-	cmp	count, #128
-	b.lt	.Lnot_short
-	mrs	tmp1, dczid_el0
-	tbnz	tmp1, #4, .Lnot_short
-	mov	tmp3w, #4
-	and	zva_len, tmp1w, #15	/* Safety: other bits reserved.  */
-	lsl	zva_len, tmp3w, zva_len
-
-.Lzero_by_line:
-	/* Compute how far we need to go to become suitably aligned.  We're
-	 * already at quad-word alignment.  */
-	cmp	count, zva_len_x
-	b.lt	.Lnot_short		/* Not enough to reach alignment.  */
-	sub	zva_bits_x, zva_len_x, #1
-	neg	tmp2, dst
-	ands	tmp2, tmp2, zva_bits_x
-	b.eq	1f			/* Already aligned.  */
-	/* Not aligned, check that there's enough to copy after alignment.  */
-	sub	tmp1, count, tmp2
-	cmp	tmp1, #64
-	ccmp	tmp1, zva_len_x, #8, ge	/* NZCV=0b1000 */
-	b.lt	.Lnot_short
-	/* We know that there's at least 64 bytes to zero and that it's safe
-	 * to overrun by 64 bytes.  */
-	mov	count, tmp1
-2:
-	stp	A_l, A_l, [dst]
-	stp	A_l, A_l, [dst, #16]
-	stp	A_l, A_l, [dst, #32]
-	subs	tmp2, tmp2, #64
-	stp	A_l, A_l, [dst, #48]
-	add	dst, dst, #64
-	b.ge	2b
-	/* We've overrun a bit, so adjust dst downwards.  */
-	add	dst, dst, tmp2
-1:
-	sub	count, count, zva_len_x
-3:
-	dc	zva, dst
-	add	dst, dst, zva_len_x
-	subs	count, count, zva_len_x
-	b.ge	3b
-	ands	count, count, zva_bits_x
-	b.ne	.Ltail_maybe_long
-	ret
-END(android_memset32)
diff --git a/libcutils/arch-mips/android_memset.c b/libcutils/arch-mips/android_memset.c
deleted file mode 100644
index c0fe3d1..0000000
--- a/libcutils/arch-mips/android_memset.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/* generic C version for any machine */
-
-#include <cutils/memory.h>
-
-#ifdef __clang__
-__attribute__((no_sanitize("integer")))
-#endif
-void android_memset16(uint16_t* dst, uint16_t value, size_t size)
-{
-   /* optimized version of
-      size >>= 1;
-      while (size--)
-        *dst++ = value;
-   */
-
-   size >>= 1;
-   if (((uintptr_t)dst & 2) && size) {
-      /* fill unpaired first elem separately */
-      *dst++ = value;
-      size--;
-   }
-   /* dst is now 32-bit-aligned */
-   /* fill body with 32-bit pairs */
-   uint32_t value32 = (((uint32_t)value) << 16) | ((uint32_t)value);
-   android_memset32((uint32_t*) dst, value32, size<<1);
-   if (size & 1) {
-      dst[size-1] = value;  /* fill unpaired last elem */
-   }
-}
-
-
-#ifdef __clang__
-__attribute__((no_sanitize("integer")))
-#endif
-void android_memset32(uint32_t* dst, uint32_t value, size_t size)
-{
-   /* optimized version of
-      size >>= 2;
-      while (size--)
-         *dst++ = value;
-   */
-
-   size >>= 2;
-   if (((uintptr_t)dst & 4) && size) {
-      /* fill unpaired first 32-bit elem separately */
-      *dst++ = value;
-      size--;
-   }
-   /* dst is now 64-bit aligned */
-   /* fill body with 64-bit pairs */
-   uint64_t value64 = (((uint64_t)value) << 32) | ((uint64_t)value);
-   uint64_t* dst64 = (uint64_t*)dst;
-
-   while (size >= 12) {
-      dst64[0] = value64;
-      dst64[1] = value64;
-      dst64[2] = value64;
-      dst64[3] = value64;
-      dst64[4] = value64;
-      dst64[5] = value64;
-      size  -= 12;
-      dst64 += 6;
-   }
-
-   /* fill remainder with original 32-bit single-elem loop */
-   dst = (uint32_t*) dst64;
-   while (size != 0) {
-       size--;
-      *dst++ = value;
-   }
-
-}
diff --git a/libcutils/arch-x86/android_memset16.S b/libcutils/arch-x86/android_memset16.S
deleted file mode 100755
index cb2ff14..0000000
--- a/libcutils/arch-x86/android_memset16.S
+++ /dev/null
@@ -1,719 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "cache.h"
-
-#ifndef MEMSET
-# define MEMSET		android_memset16
-#endif
-
-#ifndef L
-# define L(label)	.L##label
-#endif
-
-#ifndef ALIGN
-# define ALIGN(n)	.p2align n
-#endif
-
-#ifndef cfi_startproc
-# define cfi_startproc			.cfi_startproc
-#endif
-
-#ifndef cfi_endproc
-# define cfi_endproc			.cfi_endproc
-#endif
-
-#ifndef cfi_rel_offset
-# define cfi_rel_offset(reg, off)	.cfi_rel_offset reg, off
-#endif
-
-#ifndef cfi_restore
-# define cfi_restore(reg)		.cfi_restore reg
-#endif
-
-#ifndef cfi_adjust_cfa_offset
-# define cfi_adjust_cfa_offset(off)	.cfi_adjust_cfa_offset off
-#endif
-
-#ifndef ENTRY
-# define ENTRY(name)			\
-	.type name,  @function; 	\
-	.globl name;			\
-	.p2align 4;			\
-name:					\
-	cfi_startproc
-#endif
-
-#ifndef END
-# define END(name)			\
-	cfi_endproc;			\
-	.size name, .-name
-#endif
-
-#define CFI_PUSH(REG)						\
-  cfi_adjust_cfa_offset (4);					\
-  cfi_rel_offset (REG, 0)
-
-#define CFI_POP(REG)						\
-  cfi_adjust_cfa_offset (-4);					\
-  cfi_restore (REG)
-
-#define PUSH(REG)	pushl REG; CFI_PUSH (REG)
-#define POP(REG)	popl REG; CFI_POP (REG)
-
-#ifdef USE_AS_BZERO16
-# define DEST		PARMS
-# define LEN		DEST+4
-# define SETRTNVAL
-#else
-# define DEST		PARMS
-# define CHR		DEST+4
-# define LEN		CHR+4
-# define SETRTNVAL	movl DEST(%esp), %eax
-#endif
-
-#if (defined SHARED || defined __PIC__)
-# define ENTRANCE	PUSH (%ebx);
-# define RETURN_END	POP (%ebx); ret
-# define RETURN		RETURN_END; CFI_PUSH (%ebx)
-# define PARMS		8		/* Preserve EBX.  */
-# define JMPTBL(I, B)	I - B
-
-/* Load an entry in a jump table into EBX and branch to it.  TABLE is a
-   jump table with relative offsets.   */
-# define BRANCH_TO_JMPTBL_ENTRY(TABLE)				\
-    /* We first load PC into EBX.  */				\
-    call	__x86.get_pc_thunk.bx;				\
-    /* Get the address of the jump table.  */			\
-    add		$(TABLE - .), %ebx;				\
-    /* Get the entry and convert the relative offset to the	\
-       absolute address.  */					\
-    add		(%ebx,%ecx,4), %ebx;				\
-    /* We loaded the jump table and adjuested EDX. Go.  */	\
-    jmp		*%ebx
-
-	.section	.gnu.linkonce.t.__x86.get_pc_thunk.bx,"ax",@progbits
-	.globl	__x86.get_pc_thunk.bx
-	.hidden	__x86.get_pc_thunk.bx
-	ALIGN (4)
-	.type	__x86.get_pc_thunk.bx,@function
-__x86.get_pc_thunk.bx:
-	movl	(%esp), %ebx
-	ret
-#else
-# define ENTRANCE
-# define RETURN_END	ret
-# define RETURN		RETURN_END
-# define PARMS		4
-# define JMPTBL(I, B)	I
-
-/* Branch to an entry in a jump table.  TABLE is a jump table with
-   absolute offsets.  */
-# define BRANCH_TO_JMPTBL_ENTRY(TABLE)				\
-    jmp		*TABLE(,%ecx,4)
-#endif
-
-	.section .text.sse2,"ax",@progbits
-	ALIGN (4)
-ENTRY (MEMSET)
-	ENTRANCE
-
-	movl	LEN(%esp), %ecx
-	shr	$1, %ecx
-#ifdef USE_AS_BZERO16
-	xor	%eax, %eax
-#else
-	movzwl	CHR(%esp), %eax
-	mov	%eax, %edx
-	shl	$16, %eax
-	or	%edx, %eax
-#endif
-	movl	DEST(%esp), %edx
-	cmp	$32, %ecx
-	jae	L(32wordsormore)
-
-L(write_less32words):
-	lea	(%edx, %ecx, 2), %edx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_less32words))
-
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_less32words):
-	.int	JMPTBL (L(write_0words), L(table_less32words))
-	.int	JMPTBL (L(write_1words), L(table_less32words))
-	.int	JMPTBL (L(write_2words), L(table_less32words))
-	.int	JMPTBL (L(write_3words), L(table_less32words))
-	.int	JMPTBL (L(write_4words), L(table_less32words))
-	.int	JMPTBL (L(write_5words), L(table_less32words))
-	.int	JMPTBL (L(write_6words), L(table_less32words))
-	.int	JMPTBL (L(write_7words), L(table_less32words))
-	.int	JMPTBL (L(write_8words), L(table_less32words))
-	.int	JMPTBL (L(write_9words), L(table_less32words))
-	.int	JMPTBL (L(write_10words), L(table_less32words))
-	.int	JMPTBL (L(write_11words), L(table_less32words))
-	.int	JMPTBL (L(write_12words), L(table_less32words))
-	.int	JMPTBL (L(write_13words), L(table_less32words))
-	.int	JMPTBL (L(write_14words), L(table_less32words))
-	.int	JMPTBL (L(write_15words), L(table_less32words))
-	.int	JMPTBL (L(write_16words), L(table_less32words))
-	.int	JMPTBL (L(write_17words), L(table_less32words))
-	.int	JMPTBL (L(write_18words), L(table_less32words))
-	.int	JMPTBL (L(write_19words), L(table_less32words))
-	.int	JMPTBL (L(write_20words), L(table_less32words))
-	.int	JMPTBL (L(write_21words), L(table_less32words))
-	.int	JMPTBL (L(write_22words), L(table_less32words))
-	.int	JMPTBL (L(write_23words), L(table_less32words))
-	.int	JMPTBL (L(write_24words), L(table_less32words))
-	.int	JMPTBL (L(write_25words), L(table_less32words))
-	.int	JMPTBL (L(write_26words), L(table_less32words))
-	.int	JMPTBL (L(write_27words), L(table_less32words))
-	.int	JMPTBL (L(write_28words), L(table_less32words))
-	.int	JMPTBL (L(write_29words), L(table_less32words))
-	.int	JMPTBL (L(write_30words), L(table_less32words))
-	.int	JMPTBL (L(write_31words), L(table_less32words))
-	.popsection
-
-	ALIGN (4)
-L(write_28words):
-	movl	%eax, -56(%edx)
-	movl	%eax, -52(%edx)
-L(write_24words):
-	movl	%eax, -48(%edx)
-	movl	%eax, -44(%edx)
-L(write_20words):
-	movl	%eax, -40(%edx)
-	movl	%eax, -36(%edx)
-L(write_16words):
-	movl	%eax, -32(%edx)
-	movl	%eax, -28(%edx)
-L(write_12words):
-	movl	%eax, -24(%edx)
-	movl	%eax, -20(%edx)
-L(write_8words):
-	movl	%eax, -16(%edx)
-	movl	%eax, -12(%edx)
-L(write_4words):
-	movl	%eax, -8(%edx)
-	movl	%eax, -4(%edx)
-L(write_0words):
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(write_29words):
-	movl	%eax, -58(%edx)
-	movl	%eax, -54(%edx)
-L(write_25words):
-	movl	%eax, -50(%edx)
-	movl	%eax, -46(%edx)
-L(write_21words):
-	movl	%eax, -42(%edx)
-	movl	%eax, -38(%edx)
-L(write_17words):
-	movl	%eax, -34(%edx)
-	movl	%eax, -30(%edx)
-L(write_13words):
-	movl	%eax, -26(%edx)
-	movl	%eax, -22(%edx)
-L(write_9words):
-	movl	%eax, -18(%edx)
-	movl	%eax, -14(%edx)
-L(write_5words):
-	movl	%eax, -10(%edx)
-	movl	%eax, -6(%edx)
-L(write_1words):
-	mov	%ax, -2(%edx)
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(write_30words):
-	movl	%eax, -60(%edx)
-	movl	%eax, -56(%edx)
-L(write_26words):
-	movl	%eax, -52(%edx)
-	movl	%eax, -48(%edx)
-L(write_22words):
-	movl	%eax, -44(%edx)
-	movl	%eax, -40(%edx)
-L(write_18words):
-	movl	%eax, -36(%edx)
-	movl	%eax, -32(%edx)
-L(write_14words):
-	movl	%eax, -28(%edx)
-	movl	%eax, -24(%edx)
-L(write_10words):
-	movl	%eax, -20(%edx)
-	movl	%eax, -16(%edx)
-L(write_6words):
-	movl	%eax, -12(%edx)
-	movl	%eax, -8(%edx)
-L(write_2words):
-	movl	%eax, -4(%edx)
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(write_31words):
-	movl	%eax, -62(%edx)
-	movl	%eax, -58(%edx)
-L(write_27words):
-	movl	%eax, -54(%edx)
-	movl	%eax, -50(%edx)
-L(write_23words):
-	movl	%eax, -46(%edx)
-	movl	%eax, -42(%edx)
-L(write_19words):
-	movl	%eax, -38(%edx)
-	movl	%eax, -34(%edx)
-L(write_15words):
-	movl	%eax, -30(%edx)
-	movl	%eax, -26(%edx)
-L(write_11words):
-	movl	%eax, -22(%edx)
-	movl	%eax, -18(%edx)
-L(write_7words):
-	movl	%eax, -14(%edx)
-	movl	%eax, -10(%edx)
-L(write_3words):
-	movl	%eax, -6(%edx)
-	movw	%ax, -2(%edx)
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-
-L(32wordsormore):
-	shl	$1, %ecx
-	test	$0x01, %edx
-	jz	L(aligned2bytes)
-	mov	%eax, (%edx)
-	mov	%eax, -4(%edx, %ecx)
-	sub	$2, %ecx
-	add	$1, %edx
-	rol	$8, %eax
-L(aligned2bytes):
-#ifdef USE_AS_BZERO16
-	pxor	%xmm0, %xmm0
-#else
-	movd	%eax, %xmm0
-	pshufd	$0, %xmm0, %xmm0
-#endif
-	testl	$0xf, %edx
-	jz	L(aligned_16)
-/* ECX > 32 and EDX is not 16 byte aligned.  */
-L(not_aligned_16):
-	movdqu	%xmm0, (%edx)
-	movl	%edx, %eax
-	and	$-16, %edx
-	add	$16, %edx
-	sub	%edx, %eax
-	add	%eax, %ecx
-	movd	%xmm0, %eax
-
-	ALIGN (4)
-L(aligned_16):
-	cmp	$128, %ecx
-	jae	L(128bytesormore)
-
-L(aligned_16_less128bytes):
-	add	%ecx, %edx
-	shr	$1, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	ALIGN (4)
-L(128bytesormore):
-#ifdef SHARED_CACHE_SIZE
-	PUSH (%ebx)
-	mov	$SHARED_CACHE_SIZE, %ebx
-#else
-# if (defined SHARED || defined __PIC__)
-	call	__x86.get_pc_thunk.bx
-	add	$_GLOBAL_OFFSET_TABLE_, %ebx
-	mov	__x86_shared_cache_size@GOTOFF(%ebx), %ebx
-# else
-	PUSH (%ebx)
-	mov	__x86_shared_cache_size, %ebx
-# endif
-#endif
-	cmp	%ebx, %ecx
-	jae	L(128bytesormore_nt_start)
-
-
-#ifdef DATA_CACHE_SIZE
-	POP (%ebx)
-# define RESTORE_EBX_STATE CFI_PUSH (%ebx)
-	cmp	$DATA_CACHE_SIZE, %ecx
-#else
-# if (defined SHARED || defined __PIC__)
-#  define RESTORE_EBX_STATE
-	call	__x86.get_pc_thunk.bx
-	add	$_GLOBAL_OFFSET_TABLE_, %ebx
-	cmp	__x86_data_cache_size@GOTOFF(%ebx), %ecx
-# else
-	POP (%ebx)
-#  define RESTORE_EBX_STATE CFI_PUSH (%ebx)
-	cmp	__x86_data_cache_size, %ecx
-# endif
-#endif
-
-	jae	L(128bytes_L2_normal)
-	subl	$128, %ecx
-L(128bytesormore_normal):
-	sub	$128, %ecx
-	movdqa	%xmm0, (%edx)
-	movdqa	%xmm0, 0x10(%edx)
-	movdqa	%xmm0, 0x20(%edx)
-	movdqa	%xmm0, 0x30(%edx)
-	movdqa	%xmm0, 0x40(%edx)
-	movdqa	%xmm0, 0x50(%edx)
-	movdqa	%xmm0, 0x60(%edx)
-	movdqa	%xmm0, 0x70(%edx)
-	lea	128(%edx), %edx
-	jb	L(128bytesless_normal)
-
-
-	sub	$128, %ecx
-	movdqa	%xmm0, (%edx)
-	movdqa	%xmm0, 0x10(%edx)
-	movdqa	%xmm0, 0x20(%edx)
-	movdqa	%xmm0, 0x30(%edx)
-	movdqa	%xmm0, 0x40(%edx)
-	movdqa	%xmm0, 0x50(%edx)
-	movdqa	%xmm0, 0x60(%edx)
-	movdqa	%xmm0, 0x70(%edx)
-	lea	128(%edx), %edx
-	jae	L(128bytesormore_normal)
-
-L(128bytesless_normal):
-	lea	128(%ecx), %ecx
-	add	%ecx, %edx
-	shr	$1, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	ALIGN (4)
-L(128bytes_L2_normal):
-	prefetcht0	0x380(%edx)
-	prefetcht0	0x3c0(%edx)
-	sub	$128, %ecx
-	movdqa	%xmm0, (%edx)
-	movaps	%xmm0, 0x10(%edx)
-	movaps	%xmm0, 0x20(%edx)
-	movaps	%xmm0, 0x30(%edx)
-	movaps	%xmm0, 0x40(%edx)
-	movaps	%xmm0, 0x50(%edx)
-	movaps	%xmm0, 0x60(%edx)
-	movaps	%xmm0, 0x70(%edx)
-	add	$128, %edx
-	cmp	$128, %ecx
-	jae	L(128bytes_L2_normal)
-
-L(128bytesless_L2_normal):
-	add	%ecx, %edx
-	shr	$1, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	RESTORE_EBX_STATE
-L(128bytesormore_nt_start):
-	sub	%ebx, %ecx
-	mov	%ebx, %eax
-	and	$0x7f, %eax
-	add	%eax, %ecx
-	movd	%xmm0, %eax
-	ALIGN (4)
-L(128bytesormore_shared_cache_loop):
-	prefetcht0	0x3c0(%edx)
-	prefetcht0	0x380(%edx)
-	sub	$0x80, %ebx
-	movdqa	%xmm0, (%edx)
-	movdqa	%xmm0, 0x10(%edx)
-	movdqa	%xmm0, 0x20(%edx)
-	movdqa	%xmm0, 0x30(%edx)
-	movdqa	%xmm0, 0x40(%edx)
-	movdqa	%xmm0, 0x50(%edx)
-	movdqa	%xmm0, 0x60(%edx)
-	movdqa	%xmm0, 0x70(%edx)
-	add	$0x80, %edx
-	cmp	$0x80, %ebx
-	jae	L(128bytesormore_shared_cache_loop)
-	cmp	$0x80, %ecx
-	jb	L(shared_cache_loop_end)
-	ALIGN (4)
-L(128bytesormore_nt):
-	sub	$0x80, %ecx
-	movntdq	%xmm0, (%edx)
-	movntdq	%xmm0, 0x10(%edx)
-	movntdq	%xmm0, 0x20(%edx)
-	movntdq	%xmm0, 0x30(%edx)
-	movntdq	%xmm0, 0x40(%edx)
-	movntdq	%xmm0, 0x50(%edx)
-	movntdq	%xmm0, 0x60(%edx)
-	movntdq	%xmm0, 0x70(%edx)
-	add	$0x80, %edx
-	cmp	$0x80, %ecx
-	jae	L(128bytesormore_nt)
-	sfence
-L(shared_cache_loop_end):
-#if defined DATA_CACHE_SIZE || !(defined SHARED || defined __PIC__)
-	POP (%ebx)
-#endif
-	add	%ecx, %edx
-	shr	$1, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_16_128bytes):
-	.int	JMPTBL (L(aligned_16_0bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_2bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_4bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_6bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_8bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_10bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_12bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_14bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_16bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_18bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_20bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_22bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_24bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_26bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_28bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_30bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_32bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_34bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_36bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_38bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_40bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_42bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_44bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_46bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_48bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_50bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_52bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_54bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_56bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_58bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_60bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_62bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_64bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_66bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_68bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_70bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_72bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_74bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_76bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_78bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_80bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_82bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_84bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_86bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_88bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_90bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_92bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_94bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_96bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_98bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_100bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_102bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_104bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_106bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_108bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_110bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_112bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_114bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_116bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_118bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_120bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_122bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_124bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_126bytes), L(table_16_128bytes))
-	.popsection
-
-
-	ALIGN (4)
-L(aligned_16_112bytes):
-	movdqa	%xmm0, -112(%edx)
-L(aligned_16_96bytes):
-	movdqa	%xmm0, -96(%edx)
-L(aligned_16_80bytes):
-	movdqa	%xmm0, -80(%edx)
-L(aligned_16_64bytes):
-	movdqa	%xmm0, -64(%edx)
-L(aligned_16_48bytes):
-	movdqa	%xmm0, -48(%edx)
-L(aligned_16_32bytes):
-	movdqa	%xmm0, -32(%edx)
-L(aligned_16_16bytes):
-	movdqa	%xmm0, -16(%edx)
-L(aligned_16_0bytes):
-	SETRTNVAL
-	RETURN
-
-
-	ALIGN (4)
-L(aligned_16_114bytes):
-	movdqa	%xmm0, -114(%edx)
-L(aligned_16_98bytes):
-	movdqa	%xmm0, -98(%edx)
-L(aligned_16_82bytes):
-	movdqa	%xmm0, -82(%edx)
-L(aligned_16_66bytes):
-	movdqa	%xmm0, -66(%edx)
-L(aligned_16_50bytes):
-	movdqa	%xmm0, -50(%edx)
-L(aligned_16_34bytes):
-	movdqa	%xmm0, -34(%edx)
-L(aligned_16_18bytes):
-	movdqa	%xmm0, -18(%edx)
-L(aligned_16_2bytes):
-	movw	%ax, -2(%edx)
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(aligned_16_116bytes):
-	movdqa	%xmm0, -116(%edx)
-L(aligned_16_100bytes):
-	movdqa	%xmm0, -100(%edx)
-L(aligned_16_84bytes):
-	movdqa	%xmm0, -84(%edx)
-L(aligned_16_68bytes):
-	movdqa	%xmm0, -68(%edx)
-L(aligned_16_52bytes):
-	movdqa	%xmm0, -52(%edx)
-L(aligned_16_36bytes):
-	movdqa	%xmm0, -36(%edx)
-L(aligned_16_20bytes):
-	movdqa	%xmm0, -20(%edx)
-L(aligned_16_4bytes):
-	movl	%eax, -4(%edx)
-	SETRTNVAL
-	RETURN
-
-
-	ALIGN (4)
-L(aligned_16_118bytes):
-	movdqa	%xmm0, -118(%edx)
-L(aligned_16_102bytes):
-	movdqa	%xmm0, -102(%edx)
-L(aligned_16_86bytes):
-	movdqa	%xmm0, -86(%edx)
-L(aligned_16_70bytes):
-	movdqa	%xmm0, -70(%edx)
-L(aligned_16_54bytes):
-	movdqa	%xmm0, -54(%edx)
-L(aligned_16_38bytes):
-	movdqa	%xmm0, -38(%edx)
-L(aligned_16_22bytes):
-	movdqa	%xmm0, -22(%edx)
-L(aligned_16_6bytes):
-	movl	%eax, -6(%edx)
-	movw	%ax, -2(%edx)
-	SETRTNVAL
-	RETURN
-
-
-	ALIGN (4)
-L(aligned_16_120bytes):
-	movdqa	%xmm0, -120(%edx)
-L(aligned_16_104bytes):
-	movdqa	%xmm0, -104(%edx)
-L(aligned_16_88bytes):
-	movdqa	%xmm0, -88(%edx)
-L(aligned_16_72bytes):
-	movdqa	%xmm0, -72(%edx)
-L(aligned_16_56bytes):
-	movdqa	%xmm0, -56(%edx)
-L(aligned_16_40bytes):
-	movdqa	%xmm0, -40(%edx)
-L(aligned_16_24bytes):
-	movdqa	%xmm0, -24(%edx)
-L(aligned_16_8bytes):
-	movq	%xmm0, -8(%edx)
-	SETRTNVAL
-	RETURN
-
-
-	ALIGN (4)
-L(aligned_16_122bytes):
-	movdqa	%xmm0, -122(%edx)
-L(aligned_16_106bytes):
-	movdqa	%xmm0, -106(%edx)
-L(aligned_16_90bytes):
-	movdqa	%xmm0, -90(%edx)
-L(aligned_16_74bytes):
-	movdqa	%xmm0, -74(%edx)
-L(aligned_16_58bytes):
-	movdqa	%xmm0, -58(%edx)
-L(aligned_16_42bytes):
-	movdqa	%xmm0, -42(%edx)
-L(aligned_16_26bytes):
-	movdqa	%xmm0, -26(%edx)
-L(aligned_16_10bytes):
-	movq	%xmm0, -10(%edx)
-	movw	%ax, -2(%edx)
-	SETRTNVAL
-	RETURN
-
-
-	ALIGN (4)
-L(aligned_16_124bytes):
-	movdqa	%xmm0, -124(%edx)
-L(aligned_16_108bytes):
-	movdqa	%xmm0, -108(%edx)
-L(aligned_16_92bytes):
-	movdqa	%xmm0, -92(%edx)
-L(aligned_16_76bytes):
-	movdqa	%xmm0, -76(%edx)
-L(aligned_16_60bytes):
-	movdqa	%xmm0, -60(%edx)
-L(aligned_16_44bytes):
-	movdqa	%xmm0, -44(%edx)
-L(aligned_16_28bytes):
-	movdqa	%xmm0, -28(%edx)
-L(aligned_16_12bytes):
-	movq	%xmm0, -12(%edx)
-	movl	%eax, -4(%edx)
-	SETRTNVAL
-	RETURN
-
-
-	ALIGN (4)
-L(aligned_16_126bytes):
-	movdqa	%xmm0, -126(%edx)
-L(aligned_16_110bytes):
-	movdqa	%xmm0, -110(%edx)
-L(aligned_16_94bytes):
-	movdqa	%xmm0, -94(%edx)
-L(aligned_16_78bytes):
-	movdqa	%xmm0, -78(%edx)
-L(aligned_16_62bytes):
-	movdqa	%xmm0, -62(%edx)
-L(aligned_16_46bytes):
-	movdqa	%xmm0, -46(%edx)
-L(aligned_16_30bytes):
-	movdqa	%xmm0, -30(%edx)
-L(aligned_16_14bytes):
-	movq	%xmm0, -14(%edx)
-	movl	%eax, -6(%edx)
-	movw	%ax, -2(%edx)
-	SETRTNVAL
-	RETURN
-
-END (MEMSET)
diff --git a/libcutils/arch-x86/android_memset32.S b/libcutils/arch-x86/android_memset32.S
deleted file mode 100755
index f4326dc..0000000
--- a/libcutils/arch-x86/android_memset32.S
+++ /dev/null
@@ -1,510 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "cache.h"
-
-#ifndef MEMSET
-# define MEMSET 	android_memset32
-#endif
-
-#ifndef L
-# define L(label)	.L##label
-#endif
-
-#ifndef ALIGN
-# define ALIGN(n)	.p2align n
-#endif
-
-#ifndef cfi_startproc
-# define cfi_startproc			.cfi_startproc
-#endif
-
-#ifndef cfi_endproc
-# define cfi_endproc			.cfi_endproc
-#endif
-
-#ifndef cfi_rel_offset
-# define cfi_rel_offset(reg, off)	.cfi_rel_offset reg, off
-#endif
-
-#ifndef cfi_restore
-# define cfi_restore(reg)		.cfi_restore reg
-#endif
-
-#ifndef cfi_adjust_cfa_offset
-# define cfi_adjust_cfa_offset(off)	.cfi_adjust_cfa_offset off
-#endif
-
-#ifndef ENTRY
-# define ENTRY(name)			\
-	.type name,  @function; 	\
-	.globl name;			\
-	.p2align 4;			\
-name:					\
-	cfi_startproc
-#endif
-
-#ifndef END
-# define END(name)			\
-	cfi_endproc;			\
-	.size name, .-name
-#endif
-
-#define CFI_PUSH(REG)						\
-  cfi_adjust_cfa_offset (4);					\
-  cfi_rel_offset (REG, 0)
-
-#define CFI_POP(REG)						\
-  cfi_adjust_cfa_offset (-4);					\
-  cfi_restore (REG)
-
-#define PUSH(REG)	pushl REG; CFI_PUSH (REG)
-#define POP(REG)	popl REG; CFI_POP (REG)
-
-#ifdef USE_AS_BZERO32
-# define DEST		PARMS
-# define LEN		DEST+4
-# define SETRTNVAL
-#else
-# define DEST		PARMS
-# define DWDS		DEST+4
-# define LEN		DWDS+4
-# define SETRTNVAL	movl DEST(%esp), %eax
-#endif
-
-#if (defined SHARED || defined __PIC__)
-# define ENTRANCE	PUSH (%ebx);
-# define RETURN_END	POP (%ebx); ret
-# define RETURN		RETURN_END; CFI_PUSH (%ebx)
-# define PARMS		8		/* Preserve EBX.  */
-# define JMPTBL(I, B)	I - B
-
-/* Load an entry in a jump table into EBX and branch to it.  TABLE is a
-   jump table with relative offsets.   */
-# define BRANCH_TO_JMPTBL_ENTRY(TABLE)				\
-    /* We first load PC into EBX.  */				\
-    call	__x86.get_pc_thunk.bx;				\
-    /* Get the address of the jump table.  */			\
-    add		$(TABLE - .), %ebx;				\
-    /* Get the entry and convert the relative offset to the	\
-       absolute address.  */					\
-    add		(%ebx,%ecx,4), %ebx;				\
-    /* We loaded the jump table and adjuested EDX. Go.  */	\
-    jmp		*%ebx
-
-	.section	.gnu.linkonce.t.__x86.get_pc_thunk.bx,"ax",@progbits
-	.globl	__x86.get_pc_thunk.bx
-	.hidden	__x86.get_pc_thunk.bx
-	ALIGN (4)
-	.type	__x86.get_pc_thunk.bx,@function
-__x86.get_pc_thunk.bx:
-	movl	(%esp), %ebx
-	ret
-#else
-# define ENTRANCE
-# define RETURN_END	ret
-# define RETURN		RETURN_END
-# define PARMS		4
-# define JMPTBL(I, B)	I
-
-/* Branch to an entry in a jump table.  TABLE is a jump table with
-   absolute offsets.  */
-# define BRANCH_TO_JMPTBL_ENTRY(TABLE)				\
-    jmp		*TABLE(,%ecx,4)
-#endif
-
-	.section .text.sse2,"ax",@progbits
-	ALIGN (4)
-ENTRY (MEMSET)
-	ENTRANCE
-
-	movl	LEN(%esp), %ecx
-	shr     $2, %ecx
-#ifdef USE_AS_BZERO32
-	xor	%eax, %eax
-#else
-	mov	DWDS(%esp), %eax
-	mov	%eax, %edx
-#endif
-	movl	DEST(%esp), %edx
-	cmp	$16, %ecx
-	jae	L(16dbwordsormore)
-
-L(write_less16dbwords):
-	lea	(%edx, %ecx, 4), %edx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_less16dbwords))
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_less16dbwords):
-	.int	JMPTBL (L(write_0dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_1dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_2dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_3dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_4dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_5dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_6dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_7dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_8dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_9dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_10dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_11dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_12dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_13dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_14dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_15dbwords), L(table_less16dbwords))
-	.popsection
-
-	ALIGN (4)
-L(write_15dbwords):
-	movl	%eax, -60(%edx)
-L(write_14dbwords):
-	movl	%eax, -56(%edx)
-L(write_13dbwords):
-	movl	%eax, -52(%edx)
-L(write_12dbwords):
-	movl	%eax, -48(%edx)
-L(write_11dbwords):
-	movl	%eax, -44(%edx)
-L(write_10dbwords):
-	movl	%eax, -40(%edx)
-L(write_9dbwords):
-	movl	%eax, -36(%edx)
-L(write_8dbwords):
-	movl	%eax, -32(%edx)
-L(write_7dbwords):
-	movl	%eax, -28(%edx)
-L(write_6dbwords):
-	movl	%eax, -24(%edx)
-L(write_5dbwords):
-	movl	%eax, -20(%edx)
-L(write_4dbwords):
-	movl	%eax, -16(%edx)
-L(write_3dbwords):
-	movl	%eax, -12(%edx)
-L(write_2dbwords):
-	movl	%eax, -8(%edx)
-L(write_1dbwords):
-	movl	%eax, -4(%edx)
-L(write_0dbwords):
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(16dbwordsormore):
-	test	$3, %edx
-	jz	L(aligned4bytes)
-	mov	%eax, (%edx)
-	mov	%eax, -4(%edx, %ecx, 4)
-	sub	$1, %ecx
-	rol	$24, %eax
-	add	$1, %edx
-	test	$3, %edx
-	jz	L(aligned4bytes)
-	ror	$8, %eax
-	add	$1, %edx
-	test	$3, %edx
-	jz	L(aligned4bytes)
-	ror	$8, %eax
-	add	$1, %edx
-L(aligned4bytes):
-	shl	$2, %ecx
-
-#ifdef USE_AS_BZERO32
-	pxor	%xmm0, %xmm0
-#else
-	movd	%eax, %xmm0
-	pshufd	$0, %xmm0, %xmm0
-#endif
-	testl	$0xf, %edx
-	jz	L(aligned_16)
-/* ECX > 32 and EDX is not 16 byte aligned.  */
-L(not_aligned_16):
-	movdqu	%xmm0, (%edx)
-	movl	%edx, %eax
-	and	$-16, %edx
-	add	$16, %edx
-	sub	%edx, %eax
-	add	%eax, %ecx
-	movd	%xmm0, %eax
-	ALIGN (4)
-L(aligned_16):
-	cmp	$128, %ecx
-	jae	L(128bytesormore)
-
-L(aligned_16_less128bytes):
-	add	%ecx, %edx
-	shr	$2, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	ALIGN (4)
-L(128bytesormore):
-#ifdef SHARED_CACHE_SIZE
-	PUSH (%ebx)
-	mov	$SHARED_CACHE_SIZE, %ebx
-#else
-# if (defined SHARED || defined __PIC__)
-	call	__x86.get_pc_thunk.bx
-	add	$_GLOBAL_OFFSET_TABLE_, %ebx
-	mov	__x86_shared_cache_size@GOTOFF(%ebx), %ebx
-# else
-	PUSH (%ebx)
-	mov	__x86_shared_cache_size, %ebx
-# endif
-#endif
-	cmp	%ebx, %ecx
-	jae	L(128bytesormore_nt_start)
-
-#ifdef DATA_CACHE_SIZE
-	POP (%ebx)
-# define RESTORE_EBX_STATE CFI_PUSH (%ebx)
-	cmp	$DATA_CACHE_SIZE, %ecx
-#else
-# if (defined SHARED || defined __PIC__)
-#  define RESTORE_EBX_STATE
-	call	__x86.get_pc_thunk.bx
-	add	$_GLOBAL_OFFSET_TABLE_, %ebx
-	cmp	__x86_data_cache_size@GOTOFF(%ebx), %ecx
-# else
-	POP (%ebx)
-#  define RESTORE_EBX_STATE CFI_PUSH (%ebx)
-	cmp	__x86_data_cache_size, %ecx
-# endif
-#endif
-
-	jae	L(128bytes_L2_normal)
-	subl	$128, %ecx
-L(128bytesormore_normal):
-	sub	$128, %ecx
-	movdqa	%xmm0, (%edx)
-	movdqa	%xmm0, 0x10(%edx)
-	movdqa	%xmm0, 0x20(%edx)
-	movdqa	%xmm0, 0x30(%edx)
-	movdqa	%xmm0, 0x40(%edx)
-	movdqa	%xmm0, 0x50(%edx)
-	movdqa	%xmm0, 0x60(%edx)
-	movdqa	%xmm0, 0x70(%edx)
-	lea	128(%edx), %edx
-	jb	L(128bytesless_normal)
-
-
-	sub	$128, %ecx
-	movdqa	%xmm0, (%edx)
-	movdqa	%xmm0, 0x10(%edx)
-	movdqa	%xmm0, 0x20(%edx)
-	movdqa	%xmm0, 0x30(%edx)
-	movdqa	%xmm0, 0x40(%edx)
-	movdqa	%xmm0, 0x50(%edx)
-	movdqa	%xmm0, 0x60(%edx)
-	movdqa	%xmm0, 0x70(%edx)
-	lea	128(%edx), %edx
-	jae	L(128bytesormore_normal)
-
-L(128bytesless_normal):
-	lea	128(%ecx), %ecx
-	add	%ecx, %edx
-	shr	$2, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	ALIGN (4)
-L(128bytes_L2_normal):
-	prefetcht0	0x380(%edx)
-	prefetcht0	0x3c0(%edx)
-	sub	$128, %ecx
-	movdqa	%xmm0, (%edx)
-	movaps	%xmm0, 0x10(%edx)
-	movaps	%xmm0, 0x20(%edx)
-	movaps	%xmm0, 0x30(%edx)
-	movaps	%xmm0, 0x40(%edx)
-	movaps	%xmm0, 0x50(%edx)
-	movaps	%xmm0, 0x60(%edx)
-	movaps	%xmm0, 0x70(%edx)
-	add	$128, %edx
-	cmp	$128, %ecx
-	jae	L(128bytes_L2_normal)
-
-L(128bytesless_L2_normal):
-	add	%ecx, %edx
-	shr	$2, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	RESTORE_EBX_STATE
-L(128bytesormore_nt_start):
-	sub	%ebx, %ecx
-	mov	%ebx, %eax
-	and	$0x7f, %eax
-	add	%eax, %ecx
-	movd	%xmm0, %eax
-	ALIGN (4)
-L(128bytesormore_shared_cache_loop):
-	prefetcht0	0x3c0(%edx)
-	prefetcht0	0x380(%edx)
-	sub	$0x80, %ebx
-	movdqa	%xmm0, (%edx)
-	movdqa	%xmm0, 0x10(%edx)
-	movdqa	%xmm0, 0x20(%edx)
-	movdqa	%xmm0, 0x30(%edx)
-	movdqa	%xmm0, 0x40(%edx)
-	movdqa	%xmm0, 0x50(%edx)
-	movdqa	%xmm0, 0x60(%edx)
-	movdqa	%xmm0, 0x70(%edx)
-	add	$0x80, %edx
-	cmp	$0x80, %ebx
-	jae	L(128bytesormore_shared_cache_loop)
-	cmp	$0x80, %ecx
-	jb	L(shared_cache_loop_end)
-
-	ALIGN (4)
-L(128bytesormore_nt):
-	sub	$0x80, %ecx
-	movntdq	%xmm0, (%edx)
-	movntdq	%xmm0, 0x10(%edx)
-	movntdq	%xmm0, 0x20(%edx)
-	movntdq	%xmm0, 0x30(%edx)
-	movntdq	%xmm0, 0x40(%edx)
-	movntdq	%xmm0, 0x50(%edx)
-	movntdq	%xmm0, 0x60(%edx)
-	movntdq	%xmm0, 0x70(%edx)
-	add	$0x80, %edx
-	cmp	$0x80, %ecx
-	jae	L(128bytesormore_nt)
-	sfence
-L(shared_cache_loop_end):
-#if defined DATA_CACHE_SIZE || !(defined SHARED || defined __PIC__)
-	POP (%ebx)
-#endif
-	add	%ecx, %edx
-	shr	$2, %ecx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_16_128bytes):
-	.int	JMPTBL (L(aligned_16_0bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_4bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_8bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_12bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_16bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_20bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_24bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_28bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_32bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_36bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_40bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_44bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_48bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_52bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_56bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_60bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_64bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_68bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_72bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_76bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_80bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_84bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_88bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_92bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_96bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_100bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_104bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_108bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_112bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_116bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_120bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_124bytes), L(table_16_128bytes))
-	.popsection
-
-	ALIGN (4)
-L(aligned_16_112bytes):
-	movdqa	%xmm0, -112(%edx)
-L(aligned_16_96bytes):
-	movdqa	%xmm0, -96(%edx)
-L(aligned_16_80bytes):
-	movdqa	%xmm0, -80(%edx)
-L(aligned_16_64bytes):
-	movdqa	%xmm0, -64(%edx)
-L(aligned_16_48bytes):
-	movdqa	%xmm0, -48(%edx)
-L(aligned_16_32bytes):
-	movdqa	%xmm0, -32(%edx)
-L(aligned_16_16bytes):
-	movdqa	%xmm0, -16(%edx)
-L(aligned_16_0bytes):
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(aligned_16_116bytes):
-	movdqa	%xmm0, -116(%edx)
-L(aligned_16_100bytes):
-	movdqa	%xmm0, -100(%edx)
-L(aligned_16_84bytes):
-	movdqa	%xmm0, -84(%edx)
-L(aligned_16_68bytes):
-	movdqa	%xmm0, -68(%edx)
-L(aligned_16_52bytes):
-	movdqa	%xmm0, -52(%edx)
-L(aligned_16_36bytes):
-	movdqa	%xmm0, -36(%edx)
-L(aligned_16_20bytes):
-	movdqa	%xmm0, -20(%edx)
-L(aligned_16_4bytes):
-	movl	%eax, -4(%edx)
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(aligned_16_120bytes):
-	movdqa	%xmm0, -120(%edx)
-L(aligned_16_104bytes):
-	movdqa	%xmm0, -104(%edx)
-L(aligned_16_88bytes):
-	movdqa	%xmm0, -88(%edx)
-L(aligned_16_72bytes):
-	movdqa	%xmm0, -72(%edx)
-L(aligned_16_56bytes):
-	movdqa	%xmm0, -56(%edx)
-L(aligned_16_40bytes):
-	movdqa	%xmm0, -40(%edx)
-L(aligned_16_24bytes):
-	movdqa	%xmm0, -24(%edx)
-L(aligned_16_8bytes):
-	movq	%xmm0, -8(%edx)
-	SETRTNVAL
-	RETURN
-
-	ALIGN (4)
-L(aligned_16_124bytes):
-	movdqa	%xmm0, -124(%edx)
-L(aligned_16_108bytes):
-	movdqa	%xmm0, -108(%edx)
-L(aligned_16_92bytes):
-	movdqa	%xmm0, -92(%edx)
-L(aligned_16_76bytes):
-	movdqa	%xmm0, -76(%edx)
-L(aligned_16_60bytes):
-	movdqa	%xmm0, -60(%edx)
-L(aligned_16_44bytes):
-	movdqa	%xmm0, -44(%edx)
-L(aligned_16_28bytes):
-	movdqa	%xmm0, -28(%edx)
-L(aligned_16_12bytes):
-	movq	%xmm0, -12(%edx)
-	movl	%eax, -4(%edx)
-	SETRTNVAL
-	RETURN
-
-END (MEMSET)
diff --git a/libcutils/arch-x86_64/android_memset16.S b/libcutils/arch-x86_64/android_memset16.S
deleted file mode 100644
index cb6d4a3..0000000
--- a/libcutils/arch-x86_64/android_memset16.S
+++ /dev/null
@@ -1,565 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "cache.h"
-
-#ifndef MEMSET
-# define MEMSET		android_memset16
-#endif
-
-#ifndef L
-# define L(label)	.L##label
-#endif
-
-#ifndef ALIGN
-# define ALIGN(n)	.p2align n
-#endif
-
-#ifndef cfi_startproc
-# define cfi_startproc			.cfi_startproc
-#endif
-
-#ifndef cfi_endproc
-# define cfi_endproc			.cfi_endproc
-#endif
-
-#ifndef ENTRY
-# define ENTRY(name)			\
-	.type name,  @function; 	\
-	.globl name;			\
-	.p2align 4;			\
-name:					\
-	cfi_startproc
-#endif
-
-#ifndef END
-# define END(name)			\
-	cfi_endproc;			\
-	.size name, .-name
-#endif
-
-#define JMPTBL(I, B)	I - B
-
-/* Branch to an entry in a jump table.  TABLE is a jump table with
-   relative offsets.  INDEX is a register contains the index into the
-   jump table.  SCALE is the scale of INDEX.  */
-#define BRANCH_TO_JMPTBL_ENTRY(TABLE, INDEX, SCALE) \
-	lea    TABLE(%rip), %r11;						\
-	movslq (%r11, INDEX, SCALE), INDEX;				\
-	lea    (%r11, INDEX), INDEX;					\
-	jmp    *INDEX
-
-	.section .text.sse2,"ax",@progbits
-	ALIGN (4)
-ENTRY (MEMSET)	// Address in rdi
-	shr    $1, %rdx			// Count in rdx
-	movzwl %si, %ecx
-	/* Fill the whole ECX with pattern.  */
-	shl    $16, %esi
-	or     %esi, %ecx		// Pattern in ecx
-
-	cmp    $32, %rdx
-	jae    L(32wordsormore)
-
-L(write_less32words):
-	lea    (%rdi, %rdx, 2), %rdi
-	BRANCH_TO_JMPTBL_ENTRY (L(table_less32words), %rdx, 4)
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_less32words):
-	.int	JMPTBL (L(write_0words), L(table_less32words))
-	.int	JMPTBL (L(write_1words), L(table_less32words))
-	.int	JMPTBL (L(write_2words), L(table_less32words))
-	.int	JMPTBL (L(write_3words), L(table_less32words))
-	.int	JMPTBL (L(write_4words), L(table_less32words))
-	.int	JMPTBL (L(write_5words), L(table_less32words))
-	.int	JMPTBL (L(write_6words), L(table_less32words))
-	.int	JMPTBL (L(write_7words), L(table_less32words))
-	.int	JMPTBL (L(write_8words), L(table_less32words))
-	.int	JMPTBL (L(write_9words), L(table_less32words))
-	.int	JMPTBL (L(write_10words), L(table_less32words))
-	.int	JMPTBL (L(write_11words), L(table_less32words))
-	.int	JMPTBL (L(write_12words), L(table_less32words))
-	.int	JMPTBL (L(write_13words), L(table_less32words))
-	.int	JMPTBL (L(write_14words), L(table_less32words))
-	.int	JMPTBL (L(write_15words), L(table_less32words))
-	.int	JMPTBL (L(write_16words), L(table_less32words))
-	.int	JMPTBL (L(write_17words), L(table_less32words))
-	.int	JMPTBL (L(write_18words), L(table_less32words))
-	.int	JMPTBL (L(write_19words), L(table_less32words))
-	.int	JMPTBL (L(write_20words), L(table_less32words))
-	.int	JMPTBL (L(write_21words), L(table_less32words))
-	.int	JMPTBL (L(write_22words), L(table_less32words))
-	.int	JMPTBL (L(write_23words), L(table_less32words))
-	.int	JMPTBL (L(write_24words), L(table_less32words))
-	.int	JMPTBL (L(write_25words), L(table_less32words))
-	.int	JMPTBL (L(write_26words), L(table_less32words))
-	.int	JMPTBL (L(write_27words), L(table_less32words))
-	.int	JMPTBL (L(write_28words), L(table_less32words))
-	.int	JMPTBL (L(write_29words), L(table_less32words))
-	.int	JMPTBL (L(write_30words), L(table_less32words))
-	.int	JMPTBL (L(write_31words), L(table_less32words))
-	.popsection
-
-	ALIGN (4)
-L(write_28words):
-	movl   %ecx, -56(%rdi)
-	movl   %ecx, -52(%rdi)
-L(write_24words):
-	movl   %ecx, -48(%rdi)
-	movl   %ecx, -44(%rdi)
-L(write_20words):
-	movl   %ecx, -40(%rdi)
-	movl   %ecx, -36(%rdi)
-L(write_16words):
-	movl   %ecx, -32(%rdi)
-	movl   %ecx, -28(%rdi)
-L(write_12words):
-	movl   %ecx, -24(%rdi)
-	movl   %ecx, -20(%rdi)
-L(write_8words):
-	movl   %ecx, -16(%rdi)
-	movl   %ecx, -12(%rdi)
-L(write_4words):
-	movl   %ecx, -8(%rdi)
-	movl   %ecx, -4(%rdi)
-L(write_0words):
-	ret
-
-	ALIGN (4)
-L(write_29words):
-	movl   %ecx, -58(%rdi)
-	movl   %ecx, -54(%rdi)
-L(write_25words):
-	movl   %ecx, -50(%rdi)
-	movl   %ecx, -46(%rdi)
-L(write_21words):
-	movl   %ecx, -42(%rdi)
-	movl   %ecx, -38(%rdi)
-L(write_17words):
-	movl   %ecx, -34(%rdi)
-	movl   %ecx, -30(%rdi)
-L(write_13words):
-	movl   %ecx, -26(%rdi)
-	movl   %ecx, -22(%rdi)
-L(write_9words):
-	movl   %ecx, -18(%rdi)
-	movl   %ecx, -14(%rdi)
-L(write_5words):
-	movl   %ecx, -10(%rdi)
-	movl   %ecx, -6(%rdi)
-L(write_1words):
-	mov	%cx, -2(%rdi)
-	ret
-
-	ALIGN (4)
-L(write_30words):
-	movl   %ecx, -60(%rdi)
-	movl   %ecx, -56(%rdi)
-L(write_26words):
-	movl   %ecx, -52(%rdi)
-	movl   %ecx, -48(%rdi)
-L(write_22words):
-	movl   %ecx, -44(%rdi)
-	movl   %ecx, -40(%rdi)
-L(write_18words):
-	movl   %ecx, -36(%rdi)
-	movl   %ecx, -32(%rdi)
-L(write_14words):
-	movl   %ecx, -28(%rdi)
-	movl   %ecx, -24(%rdi)
-L(write_10words):
-	movl   %ecx, -20(%rdi)
-	movl   %ecx, -16(%rdi)
-L(write_6words):
-	movl   %ecx, -12(%rdi)
-	movl   %ecx, -8(%rdi)
-L(write_2words):
-	movl   %ecx, -4(%rdi)
-	ret
-
-	ALIGN (4)
-L(write_31words):
-	movl   %ecx, -62(%rdi)
-	movl   %ecx, -58(%rdi)
-L(write_27words):
-	movl   %ecx, -54(%rdi)
-	movl   %ecx, -50(%rdi)
-L(write_23words):
-	movl   %ecx, -46(%rdi)
-	movl   %ecx, -42(%rdi)
-L(write_19words):
-	movl   %ecx, -38(%rdi)
-	movl   %ecx, -34(%rdi)
-L(write_15words):
-	movl   %ecx, -30(%rdi)
-	movl   %ecx, -26(%rdi)
-L(write_11words):
-	movl   %ecx, -22(%rdi)
-	movl   %ecx, -18(%rdi)
-L(write_7words):
-	movl   %ecx, -14(%rdi)
-	movl   %ecx, -10(%rdi)
-L(write_3words):
-	movl   %ecx, -6(%rdi)
-	movw   %cx, -2(%rdi)
-	ret
-
-	ALIGN (4)
-L(32wordsormore):
-	shl    $1, %rdx
-	test   $0x01, %edi
-	jz     L(aligned2bytes)
-	mov    %ecx, (%rdi)
-	mov    %ecx, -4(%rdi, %rdx)
-	sub    $2, %rdx
-	add    $1, %rdi
-	rol    $8, %ecx
-L(aligned2bytes):
-	/* Fill xmm0 with the pattern.  */
-	movd   %ecx, %xmm0
-	pshufd $0, %xmm0, %xmm0
-
-	testl  $0xf, %edi
-	jz     L(aligned_16)
-/* RDX > 32 and RDI is not 16 byte aligned.  */
-	movdqu %xmm0, (%rdi)
-	mov    %rdi, %rsi
-	and    $-16, %rdi
-	add    $16, %rdi
-	sub    %rdi, %rsi
-	add    %rsi, %rdx
-
-	ALIGN (4)
-L(aligned_16):
-	cmp    $128, %rdx
-	jge    L(128bytesormore)
-
-L(aligned_16_less128bytes):
-	add    %rdx, %rdi
-	shr    $1, %rdx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes), %rdx, 4)
-
-	ALIGN (4)
-L(128bytesormore):
-	cmp    $SHARED_CACHE_SIZE, %rdx
-	jg     L(128bytesormore_nt)
-
-L(128bytesormore_normal):
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jl     L(128bytesless_normal)
-
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jl     L(128bytesless_normal)
-
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jl     L(128bytesless_normal)
-
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jge    L(128bytesormore_normal)
-
-L(128bytesless_normal):
-	add    %rdx, %rdi
-	shr    $1, %rdx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes), %rdx, 4)
-
-	ALIGN (4)
-L(128bytesormore_nt):
-	sub    $128, %rdx
-	movntdq %xmm0, (%rdi)
-	movntdq %xmm0, 0x10(%rdi)
-	movntdq %xmm0, 0x20(%rdi)
-	movntdq %xmm0, 0x30(%rdi)
-	movntdq %xmm0, 0x40(%rdi)
-	movntdq %xmm0, 0x50(%rdi)
-	movntdq %xmm0, 0x60(%rdi)
-	movntdq %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jge    L(128bytesormore_nt)
-
-	sfence
-	add    %rdx, %rdi
-	shr    $1, %rdx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes), %rdx, 4)
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_16_128bytes):
-	.int	JMPTBL (L(aligned_16_0bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_2bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_4bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_6bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_8bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_10bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_12bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_14bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_16bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_18bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_20bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_22bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_24bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_26bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_28bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_30bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_32bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_34bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_36bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_38bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_40bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_42bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_44bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_46bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_48bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_50bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_52bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_54bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_56bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_58bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_60bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_62bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_64bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_66bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_68bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_70bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_72bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_74bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_76bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_78bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_80bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_82bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_84bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_86bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_88bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_90bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_92bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_94bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_96bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_98bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_100bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_102bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_104bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_106bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_108bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_110bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_112bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_114bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_116bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_118bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_120bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_122bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_124bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_126bytes), L(table_16_128bytes))
-	.popsection
-
-	ALIGN (4)
-L(aligned_16_112bytes):
-	movdqa %xmm0, -112(%rdi)
-L(aligned_16_96bytes):
-	movdqa %xmm0, -96(%rdi)
-L(aligned_16_80bytes):
-	movdqa %xmm0, -80(%rdi)
-L(aligned_16_64bytes):
-	movdqa %xmm0, -64(%rdi)
-L(aligned_16_48bytes):
-	movdqa %xmm0, -48(%rdi)
-L(aligned_16_32bytes):
-	movdqa %xmm0, -32(%rdi)
-L(aligned_16_16bytes):
-	movdqa %xmm0, -16(%rdi)
-L(aligned_16_0bytes):
-	ret
-
-	ALIGN (4)
-L(aligned_16_114bytes):
-	movdqa %xmm0, -114(%rdi)
-L(aligned_16_98bytes):
-	movdqa %xmm0, -98(%rdi)
-L(aligned_16_82bytes):
-	movdqa %xmm0, -82(%rdi)
-L(aligned_16_66bytes):
-	movdqa %xmm0, -66(%rdi)
-L(aligned_16_50bytes):
-	movdqa %xmm0, -50(%rdi)
-L(aligned_16_34bytes):
-	movdqa %xmm0, -34(%rdi)
-L(aligned_16_18bytes):
-	movdqa %xmm0, -18(%rdi)
-L(aligned_16_2bytes):
-	movw   %cx, -2(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_116bytes):
-	movdqa %xmm0, -116(%rdi)
-L(aligned_16_100bytes):
-	movdqa %xmm0, -100(%rdi)
-L(aligned_16_84bytes):
-	movdqa %xmm0, -84(%rdi)
-L(aligned_16_68bytes):
-	movdqa %xmm0, -68(%rdi)
-L(aligned_16_52bytes):
-	movdqa %xmm0, -52(%rdi)
-L(aligned_16_36bytes):
-	movdqa %xmm0, -36(%rdi)
-L(aligned_16_20bytes):
-	movdqa %xmm0, -20(%rdi)
-L(aligned_16_4bytes):
-	movl   %ecx, -4(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_118bytes):
-	movdqa %xmm0, -118(%rdi)
-L(aligned_16_102bytes):
-	movdqa %xmm0, -102(%rdi)
-L(aligned_16_86bytes):
-	movdqa %xmm0, -86(%rdi)
-L(aligned_16_70bytes):
-	movdqa %xmm0, -70(%rdi)
-L(aligned_16_54bytes):
-	movdqa %xmm0, -54(%rdi)
-L(aligned_16_38bytes):
-	movdqa %xmm0, -38(%rdi)
-L(aligned_16_22bytes):
-	movdqa %xmm0, -22(%rdi)
-L(aligned_16_6bytes):
-	movl   %ecx, -6(%rdi)
-	movw   %cx, -2(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_120bytes):
-	movdqa %xmm0, -120(%rdi)
-L(aligned_16_104bytes):
-	movdqa %xmm0, -104(%rdi)
-L(aligned_16_88bytes):
-	movdqa %xmm0, -88(%rdi)
-L(aligned_16_72bytes):
-	movdqa %xmm0, -72(%rdi)
-L(aligned_16_56bytes):
-	movdqa %xmm0, -56(%rdi)
-L(aligned_16_40bytes):
-	movdqa %xmm0, -40(%rdi)
-L(aligned_16_24bytes):
-	movdqa %xmm0, -24(%rdi)
-L(aligned_16_8bytes):
-	movq   %xmm0, -8(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_122bytes):
-	movdqa %xmm0, -122(%rdi)
-L(aligned_16_106bytes):
-	movdqa %xmm0, -106(%rdi)
-L(aligned_16_90bytes):
-	movdqa %xmm0, -90(%rdi)
-L(aligned_16_74bytes):
-	movdqa %xmm0, -74(%rdi)
-L(aligned_16_58bytes):
-	movdqa %xmm0, -58(%rdi)
-L(aligned_16_42bytes):
-	movdqa %xmm0, -42(%rdi)
-L(aligned_16_26bytes):
-	movdqa %xmm0, -26(%rdi)
-L(aligned_16_10bytes):
-	movq   %xmm0, -10(%rdi)
-	movw   %cx, -2(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_124bytes):
-	movdqa %xmm0, -124(%rdi)
-L(aligned_16_108bytes):
-	movdqa %xmm0, -108(%rdi)
-L(aligned_16_92bytes):
-	movdqa %xmm0, -92(%rdi)
-L(aligned_16_76bytes):
-	movdqa %xmm0, -76(%rdi)
-L(aligned_16_60bytes):
-	movdqa %xmm0, -60(%rdi)
-L(aligned_16_44bytes):
-	movdqa %xmm0, -44(%rdi)
-L(aligned_16_28bytes):
-	movdqa %xmm0, -28(%rdi)
-L(aligned_16_12bytes):
-	movq   %xmm0, -12(%rdi)
-	movl   %ecx, -4(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_126bytes):
-	movdqa %xmm0, -126(%rdi)
-L(aligned_16_110bytes):
-	movdqa %xmm0, -110(%rdi)
-L(aligned_16_94bytes):
-	movdqa %xmm0, -94(%rdi)
-L(aligned_16_78bytes):
-	movdqa %xmm0, -78(%rdi)
-L(aligned_16_62bytes):
-	movdqa %xmm0, -62(%rdi)
-L(aligned_16_46bytes):
-	movdqa %xmm0, -46(%rdi)
-L(aligned_16_30bytes):
-	movdqa %xmm0, -30(%rdi)
-L(aligned_16_14bytes):
-	movq   %xmm0, -14(%rdi)
-	movl   %ecx, -6(%rdi)
-	movw   %cx, -2(%rdi)
-	ret
-
-END (MEMSET)
diff --git a/libcutils/arch-x86_64/android_memset32.S b/libcutils/arch-x86_64/android_memset32.S
deleted file mode 100644
index 1514aa2..0000000
--- a/libcutils/arch-x86_64/android_memset32.S
+++ /dev/null
@@ -1,373 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "cache.h"
-
-#ifndef MEMSET
-# define MEMSET		android_memset32
-#endif
-
-#ifndef L
-# define L(label)	.L##label
-#endif
-
-#ifndef ALIGN
-# define ALIGN(n)	.p2align n
-#endif
-
-#ifndef cfi_startproc
-# define cfi_startproc			.cfi_startproc
-#endif
-
-#ifndef cfi_endproc
-# define cfi_endproc			.cfi_endproc
-#endif
-
-#ifndef ENTRY
-# define ENTRY(name)			\
-	.type name,  @function; 	\
-	.globl name;			\
-	.p2align 4;			\
-name:					\
-	cfi_startproc
-#endif
-
-#ifndef END
-# define END(name)			\
-	cfi_endproc;			\
-	.size name, .-name
-#endif
-
-#define JMPTBL(I, B)	I - B
-
-/* Branch to an entry in a jump table.  TABLE is a jump table with
-   relative offsets.  INDEX is a register contains the index into the
-   jump table.  SCALE is the scale of INDEX.  */
-#define BRANCH_TO_JMPTBL_ENTRY(TABLE, INDEX, SCALE) \
-	lea    TABLE(%rip), %r11;						\
-	movslq (%r11, INDEX, SCALE), INDEX;				\
-	lea    (%r11, INDEX), INDEX;					\
-	jmp    *INDEX
-
-	.section .text.sse2,"ax",@progbits
-	ALIGN (4)
-ENTRY (MEMSET)	// Address in rdi
-	shr    $2, %rdx			// Count in rdx
-	movl   %esi, %ecx		// Pattern in ecx
-
-	cmp    $16, %rdx
-	jae    L(16dbwordsormore)
-
-L(write_less16dbwords):
-	lea    (%rdi, %rdx, 4), %rdi
-	BRANCH_TO_JMPTBL_ENTRY (L(table_less16dbwords), %rdx, 4)
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_less16dbwords):
-	.int	JMPTBL (L(write_0dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_1dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_2dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_3dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_4dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_5dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_6dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_7dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_8dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_9dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_10dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_11dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_12dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_13dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_14dbwords), L(table_less16dbwords))
-	.int	JMPTBL (L(write_15dbwords), L(table_less16dbwords))
-	.popsection
-
-	ALIGN (4)
-L(write_15dbwords):
-	movl   %ecx, -60(%rdi)
-L(write_14dbwords):
-	movl   %ecx, -56(%rdi)
-L(write_13dbwords):
-	movl   %ecx, -52(%rdi)
-L(write_12dbwords):
-	movl   %ecx, -48(%rdi)
-L(write_11dbwords):
-	movl   %ecx, -44(%rdi)
-L(write_10dbwords):
-	movl   %ecx, -40(%rdi)
-L(write_9dbwords):
-	movl   %ecx, -36(%rdi)
-L(write_8dbwords):
-	movl   %ecx, -32(%rdi)
-L(write_7dbwords):
-	movl   %ecx, -28(%rdi)
-L(write_6dbwords):
-	movl   %ecx, -24(%rdi)
-L(write_5dbwords):
-	movl   %ecx, -20(%rdi)
-L(write_4dbwords):
-	movl   %ecx, -16(%rdi)
-L(write_3dbwords):
-	movl   %ecx, -12(%rdi)
-L(write_2dbwords):
-	movl   %ecx, -8(%rdi)
-L(write_1dbwords):
-	movl   %ecx, -4(%rdi)
-L(write_0dbwords):
-	ret
-
-	ALIGN (4)
-L(16dbwordsormore):
-	test   $3, %edi
-	jz     L(aligned4bytes)
-	mov    %ecx, (%rdi)
-	mov    %ecx, -4(%rdi, %rdx, 4)
-	sub    $1, %rdx
-	rol    $24, %ecx
-	add    $1, %rdi
-	test   $3, %edi
-	jz     L(aligned4bytes)
-	ror    $8, %ecx
-	add    $1, %rdi
-	test   $3, %edi
-	jz     L(aligned4bytes)
-	ror    $8, %ecx
-	add    $1, %rdi
-L(aligned4bytes):
-	shl    $2, %rdx
-
-	/* Fill xmm0 with the pattern.  */
-	movd   %ecx, %xmm0
-	pshufd $0, %xmm0, %xmm0
-
-	testl  $0xf, %edi
-	jz     L(aligned_16)
-/* RDX > 32 and RDI is not 16 byte aligned.  */
-	movdqu %xmm0, (%rdi)
-	mov    %rdi, %rsi
-	and    $-16, %rdi
-	add    $16, %rdi
-	sub    %rdi, %rsi
-	add    %rsi, %rdx
-
-	ALIGN (4)
-L(aligned_16):
-	cmp    $128, %rdx
-	jge    L(128bytesormore)
-
-L(aligned_16_less128bytes):
-	add    %rdx, %rdi
-	shr    $2, %rdx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes), %rdx, 4)
-
-	ALIGN (4)
-L(128bytesormore):
-	cmp    $SHARED_CACHE_SIZE, %rdx
-	jg     L(128bytesormore_nt)
-
-L(128bytesormore_normal):
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jl     L(128bytesless_normal)
-
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jl     L(128bytesless_normal)
-
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jl     L(128bytesless_normal)
-
-	sub    $128, %rdx
-	movdqa %xmm0, (%rdi)
-	movdqa %xmm0, 0x10(%rdi)
-	movdqa %xmm0, 0x20(%rdi)
-	movdqa %xmm0, 0x30(%rdi)
-	movdqa %xmm0, 0x40(%rdi)
-	movdqa %xmm0, 0x50(%rdi)
-	movdqa %xmm0, 0x60(%rdi)
-	movdqa %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jge    L(128bytesormore_normal)
-
-L(128bytesless_normal):
-	add    %rdx, %rdi
-	shr    $2, %rdx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes), %rdx, 4)
-
-	ALIGN (4)
-L(128bytesormore_nt):
-	sub    $128, %rdx
-	movntdq %xmm0, (%rdi)
-	movntdq %xmm0, 0x10(%rdi)
-	movntdq %xmm0, 0x20(%rdi)
-	movntdq %xmm0, 0x30(%rdi)
-	movntdq %xmm0, 0x40(%rdi)
-	movntdq %xmm0, 0x50(%rdi)
-	movntdq %xmm0, 0x60(%rdi)
-	movntdq %xmm0, 0x70(%rdi)
-	lea    128(%rdi), %rdi
-	cmp    $128, %rdx
-	jge    L(128bytesormore_nt)
-
-	sfence
-	add    %rdx, %rdi
-	shr    $2, %rdx
-	BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes), %rdx, 4)
-
-	.pushsection .rodata.sse2,"a",@progbits
-	ALIGN (2)
-L(table_16_128bytes):
-	.int	JMPTBL (L(aligned_16_0bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_4bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_8bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_12bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_16bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_20bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_24bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_28bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_32bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_36bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_40bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_44bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_48bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_52bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_56bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_60bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_64bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_68bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_72bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_76bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_80bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_84bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_88bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_92bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_96bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_100bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_104bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_108bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_112bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_116bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_120bytes), L(table_16_128bytes))
-	.int	JMPTBL (L(aligned_16_124bytes), L(table_16_128bytes))
-	.popsection
-
-	ALIGN (4)
-L(aligned_16_112bytes):
-	movdqa	%xmm0, -112(%rdi)
-L(aligned_16_96bytes):
-	movdqa	%xmm0, -96(%rdi)
-L(aligned_16_80bytes):
-	movdqa	%xmm0, -80(%rdi)
-L(aligned_16_64bytes):
-	movdqa	%xmm0, -64(%rdi)
-L(aligned_16_48bytes):
-	movdqa	%xmm0, -48(%rdi)
-L(aligned_16_32bytes):
-	movdqa	%xmm0, -32(%rdi)
-L(aligned_16_16bytes):
-	movdqa	%xmm0, -16(%rdi)
-L(aligned_16_0bytes):
-	ret
-
-	ALIGN (4)
-L(aligned_16_116bytes):
-	movdqa	%xmm0, -116(%rdi)
-L(aligned_16_100bytes):
-	movdqa	%xmm0, -100(%rdi)
-L(aligned_16_84bytes):
-	movdqa	%xmm0, -84(%rdi)
-L(aligned_16_68bytes):
-	movdqa	%xmm0, -68(%rdi)
-L(aligned_16_52bytes):
-	movdqa	%xmm0, -52(%rdi)
-L(aligned_16_36bytes):
-	movdqa	%xmm0, -36(%rdi)
-L(aligned_16_20bytes):
-	movdqa	%xmm0, -20(%rdi)
-L(aligned_16_4bytes):
-	movl	%ecx, -4(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_120bytes):
-	movdqa	%xmm0, -120(%rdi)
-L(aligned_16_104bytes):
-	movdqa	%xmm0, -104(%rdi)
-L(aligned_16_88bytes):
-	movdqa	%xmm0, -88(%rdi)
-L(aligned_16_72bytes):
-	movdqa	%xmm0, -72(%rdi)
-L(aligned_16_56bytes):
-	movdqa	%xmm0, -56(%rdi)
-L(aligned_16_40bytes):
-	movdqa	%xmm0, -40(%rdi)
-L(aligned_16_24bytes):
-	movdqa	%xmm0, -24(%rdi)
-L(aligned_16_8bytes):
-	movq	%xmm0, -8(%rdi)
-	ret
-
-	ALIGN (4)
-L(aligned_16_124bytes):
-	movdqa	%xmm0, -124(%rdi)
-L(aligned_16_108bytes):
-	movdqa	%xmm0, -108(%rdi)
-L(aligned_16_92bytes):
-	movdqa	%xmm0, -92(%rdi)
-L(aligned_16_76bytes):
-	movdqa	%xmm0, -76(%rdi)
-L(aligned_16_60bytes):
-	movdqa	%xmm0, -60(%rdi)
-L(aligned_16_44bytes):
-	movdqa	%xmm0, -44(%rdi)
-L(aligned_16_28bytes):
-	movdqa	%xmm0, -28(%rdi)
-L(aligned_16_12bytes):
-	movq	%xmm0, -12(%rdi)
-	movl	%ecx, -4(%rdi)
-	ret
-
-END (MEMSET)
diff --git a/libcutils/ashmem-dev.cpp b/libcutils/ashmem-dev.cpp
index e67b458..8c232f0 100644
--- a/libcutils/ashmem-dev.cpp
+++ b/libcutils/ashmem-dev.cpp
@@ -23,9 +23,6 @@
  */
 #define LOG_TAG "ashmem"
 
-#ifndef __ANDROID_VNDK__
-#include <dlfcn.h>
-#endif
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/ashmem.h>
@@ -42,11 +39,11 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <android-base/file.h>
 #include <android-base/properties.h>
+#include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 
-#define ASHMEM_DEVICE "/dev/ashmem"
-
 /* Will be added to UAPI once upstream change is merged */
 #define F_SEAL_FUTURE_WRITE 0x0010
 
@@ -66,32 +63,6 @@
 static pthread_mutex_t __ashmem_lock = PTHREAD_MUTEX_INITIALIZER;
 
 /*
- * We use ashmemd to enforce that apps don't open /dev/ashmem directly. Vendor
- * code can't access system aidl services per Treble requirements. So we limit
- * ashmemd access to the system variant of libcutils.
- */
-#ifndef __ANDROID_VNDK__
-using openFdType = int (*)();
-
-static openFdType openFd;
-
-openFdType initOpenAshmemFd() {
-    openFdType openFd = nullptr;
-    void* handle = dlopen("libashmemd_client.so", RTLD_NOW);
-    if (!handle) {
-        ALOGE("Failed to dlopen() libashmemd_client.so: %s", dlerror());
-        return openFd;
-    }
-
-    openFd = reinterpret_cast<openFdType>(dlsym(handle, "openAshmemdFd"));
-    if (!openFd) {
-        ALOGE("Failed to dlsym() openAshmemdFd() function: %s", dlerror());
-    }
-    return openFd;
-}
-#endif
-
-/*
  * has_memfd_support() determines if the device can use memfd. memfd support
  * has been there for long time, but certain things in it may be missing.  We
  * check for needed support in it. Also we check if the VNDK version of
@@ -215,30 +186,40 @@
     return memfd_supported;
 }
 
+static std::string get_ashmem_device_path() {
+    static const std::string boot_id_path = "/proc/sys/kernel/random/boot_id";
+    std::string boot_id;
+    if (!android::base::ReadFileToString(boot_id_path, &boot_id)) {
+        ALOGE("Failed to read %s: %s.\n", boot_id_path.c_str(), strerror(errno));
+        return "";
+    };
+    boot_id = android::base::Trim(boot_id);
+
+    return "/dev/ashmem" + boot_id;
+}
+
 /* logistics of getting file descriptor for ashmem */
 static int __ashmem_open_locked()
 {
-    int ret;
-    struct stat st;
+    static const std::string ashmem_device_path = get_ashmem_device_path();
 
-    int fd = -1;
-#ifndef __ANDROID_VNDK__
-    if (!openFd) {
-        openFd = initOpenAshmemFd();
+    if (ashmem_device_path.empty()) {
+        return -1;
     }
 
-    if (openFd) {
-        fd = openFd();
-    }
-#endif
+    int fd = TEMP_FAILURE_RETRY(open(ashmem_device_path.c_str(), O_RDWR | O_CLOEXEC));
+
+    // fallback for APEX w/ use_vendor on Q, which would have still used /dev/ashmem
     if (fd < 0) {
-        fd = TEMP_FAILURE_RETRY(open(ASHMEM_DEVICE, O_RDWR | O_CLOEXEC));
+        fd = TEMP_FAILURE_RETRY(open("/dev/ashmem", O_RDWR | O_CLOEXEC));
     }
+
     if (fd < 0) {
         return fd;
     }
 
-    ret = TEMP_FAILURE_RETRY(fstat(fd, &st));
+    struct stat st;
+    int ret = TEMP_FAILURE_RETRY(fstat(fd, &st));
     if (ret < 0) {
         int save_errno = errno;
         close(fd);
@@ -485,11 +466,3 @@
 
     return __ashmem_check_failure(fd, TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_GET_SIZE, NULL)));
 }
-
-void ashmem_init() {
-#ifndef __ANDROID_VNDK__
-    pthread_mutex_lock(&__ashmem_lock);
-    openFd = initOpenAshmemFd();
-    pthread_mutex_unlock(&__ashmem_lock);
-#endif  //__ANDROID_VNDK__
-}
diff --git a/libcutils/ashmem-host.cpp b/libcutils/ashmem-host.cpp
index 32446d4..2ba1eb0 100644
--- a/libcutils/ashmem-host.cpp
+++ b/libcutils/ashmem-host.cpp
@@ -34,6 +34,29 @@
 
 #include <utils/Compat.h>
 
+static bool ashmem_validate_stat(int fd, struct stat* buf) {
+    int result = fstat(fd, buf);
+    if (result == -1) {
+        return false;
+    }
+
+    /*
+     * Check if this is an "ashmem" region.
+     * TODO: This is very hacky, and can easily break.
+     * We need some reliable indicator.
+     */
+    if (!(buf->st_nlink == 0 && S_ISREG(buf->st_mode))) {
+        errno = ENOTTY;
+        return false;
+    }
+    return true;
+}
+
+int ashmem_valid(int fd) {
+    struct stat buf;
+    return ashmem_validate_stat(fd, &buf);
+}
+
 int ashmem_create_region(const char* /*ignored*/, size_t size) {
     char pattern[PATH_MAX];
     snprintf(pattern, sizeof(pattern), "/tmp/android-ashmem-%d-XXXXXXXXX", getpid());
@@ -65,22 +88,9 @@
 int ashmem_get_size_region(int fd)
 {
     struct stat buf;
-    int result = fstat(fd, &buf);
-    if (result == -1) {
-        return -1;
-    }
-
-    /*
-     * Check if this is an "ashmem" region.
-     * TODO: This is very hacky, and can easily break.
-     * We need some reliable indicator.
-     */
-    if (!(buf.st_nlink == 0 && S_ISREG(buf.st_mode))) {
-        errno = ENOTTY;
+    if (!ashmem_validate_stat(fd, &buf)) {
         return -1;
     }
 
     return buf.st_size;
 }
-
-void ashmem_init() {}
diff --git a/libcutils/fs_config.cpp b/libcutils/fs_config.cpp
index a5f4f0e..5805a4d 100644
--- a/libcutils/fs_config.cpp
+++ b/libcutils/fs_config.cpp
@@ -39,6 +39,8 @@
 #include <private/android_filesystem_config.h>
 #include <utils/Compat.h>
 
+#include "fs_config.h"
+
 #ifndef O_BINARY
 #define O_BINARY 0
 #endif
@@ -46,20 +48,8 @@
 using android::base::EndsWith;
 using android::base::StartsWith;
 
-// My kingdom for <endian.h>
-static inline uint16_t get2LE(const uint8_t* src) {
-    return src[0] | (src[1] << 8);
-}
-
-static inline uint64_t get8LE(const uint8_t* src) {
-    uint32_t low, high;
-
-    low = src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-    high = src[4] | (src[5] << 8) | (src[6] << 16) | (src[7] << 24);
-    return ((uint64_t)high << 32) | (uint64_t)low;
-}
-
 #define ALIGN(x, alignment) (((x) + ((alignment)-1)) & ~((alignment)-1))
+#define CAP_MASK_LONG(cap_name) (1ULL << (cap_name))
 
 // Rules for directories.
 // These rules are applied based on "first match", so they
@@ -84,18 +74,21 @@
     { 00775, AID_MEDIA_RW,     AID_MEDIA_RW,     0, "data/media" },
     { 00750, AID_ROOT,         AID_SHELL,        0, "data/nativetest" },
     { 00750, AID_ROOT,         AID_SHELL,        0, "data/nativetest64" },
+    { 00750, AID_ROOT,         AID_SHELL,        0, "data/benchmarktest" },
+    { 00750, AID_ROOT,         AID_SHELL,        0, "data/benchmarktest64" },
     { 00775, AID_ROOT,         AID_ROOT,         0, "data/preloads" },
     { 00771, AID_SYSTEM,       AID_SYSTEM,       0, "data" },
     { 00755, AID_ROOT,         AID_SYSTEM,       0, "mnt" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "product/bin" },
-    { 00750, AID_ROOT,         AID_SHELL,        0, "sbin" },
     { 00777, AID_ROOT,         AID_ROOT,         0, "sdcard" },
     { 00751, AID_ROOT,         AID_SDCARD_R,     0, "storage" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "system/bin" },
     { 00755, AID_ROOT,         AID_ROOT,         0, "system/etc/ppp" },
     { 00755, AID_ROOT,         AID_SHELL,        0, "system/vendor" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "system/xbin" },
-    { 00755, AID_ROOT,         AID_SHELL,        0, "system/apex/*/bin" },
+    { 00751, AID_ROOT,         AID_SHELL,        0, "system/apex/*/bin" },
+    { 00751, AID_ROOT,         AID_SHELL,        0, "system_ext/bin" },
+    { 00751, AID_ROOT,         AID_SHELL,        0, "system_ext/apex/*/bin" },
     { 00751, AID_ROOT,         AID_SHELL,        0, "vendor/bin" },
     { 00755, AID_ROOT,         AID_SHELL,        0, "vendor" },
     { 00755, AID_ROOT,         AID_ROOT,         0, 0 },
@@ -117,7 +110,7 @@
 // oem/ file-system since the intent is to provide support for customized
 // portions of a separate vendor.img or oem.img.  Has to remain open so that
 // customization can also land on /system/vendor, /system/oem, /system/odm,
-// /system/product or /system/product_services.
+// /system/product or /system/system_ext.
 //
 // We expect build-time checking or filtering when constructing the associated
 // fs_config_* files (see build/tools/fs_config/fs_config_generate.c)
@@ -129,15 +122,12 @@
 static const char odm_conf_file[] = "/odm/etc/fs_config_files";
 static const char product_conf_dir[] = "/product/etc/fs_config_dirs";
 static const char product_conf_file[] = "/product/etc/fs_config_files";
-static const char product_services_conf_dir[] = "/product_services/etc/fs_config_dirs";
-static const char product_services_conf_file[] = "/product_services/etc/fs_config_files";
+static const char system_ext_conf_dir[] = "/system_ext/etc/fs_config_dirs";
+static const char system_ext_conf_file[] = "/system_ext/etc/fs_config_files";
 static const char* conf[][2] = {
-        {sys_conf_file, sys_conf_dir},
-        {ven_conf_file, ven_conf_dir},
-        {oem_conf_file, oem_conf_dir},
-        {odm_conf_file, odm_conf_dir},
-        {product_conf_file, product_conf_dir},
-        {product_services_conf_file, product_services_conf_dir},
+        {sys_conf_file, sys_conf_dir},         {ven_conf_file, ven_conf_dir},
+        {oem_conf_file, oem_conf_dir},         {odm_conf_file, odm_conf_dir},
+        {product_conf_file, product_conf_dir}, {system_ext_conf_file, system_ext_conf_dir},
 };
 
 // Do not use android_files to grant Linux capabilities.  Use ambient capabilities in their
@@ -157,6 +147,8 @@
     { 00640, AID_ROOT,      AID_SHELL,     0, "data/nativetest64/tests.txt" },
     { 00750, AID_ROOT,      AID_SHELL,     0, "data/nativetest/*" },
     { 00750, AID_ROOT,      AID_SHELL,     0, "data/nativetest64/*" },
+    { 00750, AID_ROOT,      AID_SHELL,     0, "data/benchmarktest/*" },
+    { 00750, AID_ROOT,      AID_SHELL,     0, "data/benchmarktest64/*" },
     { 00600, AID_ROOT,      AID_ROOT,      0, "default.prop" }, // legacy
     { 00600, AID_ROOT,      AID_ROOT,      0, "system/etc/prop.default" },
     { 00600, AID_ROOT,      AID_ROOT,      0, "odm/build.prop" }, // legacy; only for P release
@@ -169,14 +161,12 @@
     { 00600, AID_ROOT,      AID_ROOT,      0, "product/build.prop" },
     { 00444, AID_ROOT,      AID_ROOT,      0, product_conf_dir + 1 },
     { 00444, AID_ROOT,      AID_ROOT,      0, product_conf_file + 1 },
-    { 00600, AID_ROOT,      AID_ROOT,      0, "product_services/build.prop" },
-    { 00444, AID_ROOT,      AID_ROOT,      0, product_services_conf_dir + 1 },
-    { 00444, AID_ROOT,      AID_ROOT,      0, product_services_conf_file + 1 },
-    { 00750, AID_ROOT,      AID_SHELL,     0, "sbin/fs_mgr" },
+    { 00600, AID_ROOT,      AID_ROOT,      0, "system_ext/build.prop" },
+    { 00444, AID_ROOT,      AID_ROOT,      0, system_ext_conf_dir + 1 },
+    { 00444, AID_ROOT,      AID_ROOT,      0, system_ext_conf_file + 1 },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/crash_dump32" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/crash_dump64" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/debuggerd" },
-    { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/install-recovery.sh" },
     { 00550, AID_LOGD,      AID_LOGD,      0, "system/bin/logd" },
     { 00700, AID_ROOT,      AID_ROOT,      0, "system/bin/secilc" },
     { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/uncrypt" },
@@ -188,9 +178,10 @@
     { 00550, AID_ROOT,      AID_SHELL,     0, "system/etc/init.ril" },
     { 00555, AID_ROOT,      AID_ROOT,      0, "system/etc/ppp/*" },
     { 00555, AID_ROOT,      AID_ROOT,      0, "system/etc/rc.*" },
-    { 00440, AID_ROOT,      AID_ROOT,      0, "system/etc/recovery.img" },
+    { 00750, AID_ROOT,      AID_ROOT,      0, "vendor/bin/install-recovery.sh" },
     { 00600, AID_ROOT,      AID_ROOT,      0, "vendor/build.prop" },
     { 00600, AID_ROOT,      AID_ROOT,      0, "vendor/default.prop" },
+    { 00440, AID_ROOT,      AID_ROOT,      0, "vendor/etc/recovery.img" },
     { 00444, AID_ROOT,      AID_ROOT,      0, ven_conf_dir + 1 },
     { 00444, AID_ROOT,      AID_ROOT,      0, ven_conf_file + 1 },
 
@@ -209,19 +200,20 @@
     { 00750, AID_ROOT,      AID_SHELL,     CAP_MASK_LONG(CAP_SETUID) |
                                            CAP_MASK_LONG(CAP_SETGID),
                                               "system/bin/simpleperf_app_runner" },
-
-    // Support FIFO scheduling mode in SurfaceFlinger.
-    { 00755, AID_SYSTEM,    AID_GRAPHICS,  CAP_MASK_LONG(CAP_SYS_NICE),
-                                              "system/bin/surfaceflinger" },
+    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/e2fsck" },
+    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/tune2fs" },
+    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/resize2fs" },
     // generic defaults
     { 00755, AID_ROOT,      AID_ROOT,      0, "bin/*" },
     { 00640, AID_ROOT,      AID_SHELL,     0, "fstab.*" },
     { 00750, AID_ROOT,      AID_SHELL,     0, "init*" },
+    { 00755, AID_ROOT,      AID_SHELL,     0, "odm/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "product/bin/*" },
-    { 00750, AID_ROOT,      AID_SHELL,     0, "sbin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/xbin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/apex/*/bin/*" },
+    { 00755, AID_ROOT,      AID_SHELL,     0, "system_ext/bin/*" },
+    { 00755, AID_ROOT,      AID_SHELL,     0, "system_ext/apex/*/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "vendor/bin/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "vendor/xbin/*" },
     { 00644, AID_ROOT,      AID_ROOT,      0, 0 },
@@ -260,9 +252,9 @@
 }
 
 // if path is "odm/<stuff>", "oem/<stuff>", "product/<stuff>",
-// "product_services/<stuff>" or "vendor/<stuff>"
+// "system_ext/<stuff>" or "vendor/<stuff>"
 static bool is_partition(const std::string& path) {
-    static const char* partitions[] = {"odm/", "oem/", "product/", "product_services/", "vendor/"};
+    static const char* partitions[] = {"odm/", "oem/", "product/", "system_ext/", "vendor/"};
     for (size_t i = 0; i < (sizeof(partitions) / sizeof(partitions[0])); ++i) {
         if (StartsWith(path, partitions[i])) return true;
     }
@@ -296,20 +288,19 @@
     const int fnm_flags = FNM_NOESCAPE;
     if (fnmatch(pattern.c_str(), input.c_str(), fnm_flags) == 0) return true;
 
-    static constexpr const char* kSystem = "system/";
-    if (StartsWith(input, kSystem)) {
-        input.erase(0, strlen(kSystem));
-    } else if (input.size() <= strlen(kSystem)) {
-        return false;
-    } else if (StartsWith(pattern, kSystem)) {
-        pattern.erase(0, strlen(kSystem));
-    } else {
-        return false;
+    // Check match between logical partition's files and patterns.
+    static constexpr const char* kLogicalPartitions[] = {"system/product/", "system/system_ext/",
+                                                         "system/vendor/", "vendor/odm/"};
+    for (auto& logical_partition : kLogicalPartitions) {
+        if (StartsWith(input, logical_partition)) {
+            std::string input_in_partition = input.substr(input.find('/') + 1);
+            if (!is_partition(input_in_partition)) continue;
+            if (fnmatch(pattern.c_str(), input_in_partition.c_str(), fnm_flags) == 0) {
+                return true;
+            }
+        }
     }
-
-    if (!is_partition(pattern)) return false;
-    if (!is_partition(input)) return false;
-    return fnmatch(pattern.c_str(), input.c_str(), fnm_flags) == 0;
+    return false;
 }
 #ifndef __ANDROID_VNDK__
 auto __for_testing_only__fs_config_cmp = fs_config_cmp;
@@ -334,7 +325,7 @@
 
         while (TEMP_FAILURE_RETRY(read(fd, &header, sizeof(header))) == sizeof(header)) {
             char* prefix;
-            uint16_t host_len = get2LE((const uint8_t*)&header.len);
+            uint16_t host_len = header.len;
             ssize_t len, remainder = host_len - sizeof(header);
             if (remainder <= 0) {
                 ALOGE("%s len is corrupted", conf[which][dir]);
@@ -359,10 +350,10 @@
             if (fs_config_cmp(dir, prefix, len, path, plen)) {
                 free(prefix);
                 close(fd);
-                *uid = get2LE((const uint8_t*)&(header.uid));
-                *gid = get2LE((const uint8_t*)&(header.gid));
-                *mode = (*mode & (~07777)) | get2LE((const uint8_t*)&(header.mode));
-                *capabilities = get8LE((const uint8_t*)&(header.capabilities));
+                *uid = header.uid;
+                *gid = header.gid;
+                *mode = (*mode & (~07777)) | header.mode;
+                *capabilities = header.capabilities;
                 return;
             }
             free(prefix);
@@ -380,21 +371,3 @@
     *mode = (*mode & (~07777)) | pc->mode;
     *capabilities = pc->capabilities;
 }
-
-ssize_t fs_config_generate(char* buffer, size_t length, const struct fs_path_config* pc) {
-    struct fs_path_config_from_file* p = (struct fs_path_config_from_file*)buffer;
-    size_t len = ALIGN(sizeof(*p) + strlen(pc->prefix) + 1, sizeof(uint64_t));
-
-    if ((length < len) || (len > UINT16_MAX)) {
-        return -ENOSPC;
-    }
-    memset(p, 0, len);
-    uint16_t host_len = len;
-    p->len = get2LE((const uint8_t*)&host_len);
-    p->mode = get2LE((const uint8_t*)&(pc->mode));
-    p->uid = get2LE((const uint8_t*)&(pc->uid));
-    p->gid = get2LE((const uint8_t*)&(pc->gid));
-    p->capabilities = get8LE((const uint8_t*)&(pc->capabilities));
-    strcpy(p->prefix, pc->prefix);
-    return len;
-}
diff --git a/libcutils/fs_config.h b/libcutils/fs_config.h
new file mode 100644
index 0000000..66ad48b
--- /dev/null
+++ b/libcutils/fs_config.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+// Binary format for the runtime <partition>/etc/fs_config_(dirs|files) filesystem override files.
+struct fs_path_config_from_file {
+    uint16_t len;
+    uint16_t mode;
+    uint16_t uid;
+    uint16_t gid;
+    uint64_t capabilities;
+    char prefix[];
+} __attribute__((__aligned__(sizeof(uint64_t))));
+
+struct fs_path_config {
+    unsigned mode;
+    unsigned uid;
+    unsigned gid;
+    uint64_t capabilities;
+    const char* prefix;
+};
diff --git a/libcutils/fs_config_test.cpp b/libcutils/fs_config_test.cpp
index c26315f..c6684b4 100644
--- a/libcutils/fs_config_test.cpp
+++ b/libcutils/fs_config_test.cpp
@@ -25,7 +25,8 @@
 #include <android-base/strings.h>
 
 #include <private/android_filesystem_config.h>
-#include <private/fs_config.h>
+
+#include "fs_config.h"
 
 extern const fs_path_config* __for_testing_only__android_dirs;
 extern const fs_path_config* __for_testing_only__android_files;
@@ -45,7 +46,7 @@
         // clang-format off
     { true,  "system/lib",             "system/lib/hw",           true  },
     { true,  "vendor/lib",             "system/vendor/lib/hw",    true  },
-    { true,  "system/vendor/lib",      "vendor/lib/hw",           true  },
+    { true,  "system/vendor/lib",      "vendor/lib/hw",           false },
     { true,  "system/vendor/lib",      "system/vendor/lib/hw",    true  },
     { true,  "foo/*/bar/*",            "foo/1/bar/2",             true  },
     { true,  "foo/*/bar/*",            "foo/1/bar",               true  },
@@ -55,13 +56,14 @@
     { false, "vendor/bin/wifi",        "system/vendor/bin/wifi",  true  },
     { false, "vendor/bin/wifi",        "system/vendor/bin/wifi2", false },
     { false, "system/vendor/bin/wifi", "system/vendor/bin/wifi",  true, },
-    { false, "odm/bin/wifi",           "system/odm/bin/wifi",     true  },
-    { false, "oem/bin/wifi",           "system/oem/bin/wifi",     true  },
+    { false, "odm/bin/wifi",           "system/odm/bin/wifi",     false },
+    { false, "odm/bin/wifi",           "vendor/odm/bin/wifi",     true  },
+    { false, "oem/bin/wifi",           "system/oem/bin/wifi",     false },
     { false, "data/bin/wifi",          "system/data/bin/wifi",    false },
     { false, "system/bin/*",           "system/bin/wifi",         true  },
     { false, "vendor/bin/*",           "system/vendor/bin/wifi",  true  },
     { false, "system/bin/*",           "system/bin",              false },
-    { false, "system/vendor/bin/*",    "vendor/bin/wifi",         true  },
+    { false, "system/vendor/bin/*",    "vendor/bin/wifi",         false },
     { false, "foo/*/bar/*",            "foo/1/bar/2",             true  },
     { false, "foo/*/bar/*",            "foo/1/bar",               false },
     { false, "foo/*/bar/*",            "foo/1/bar/2/3",           true  },
diff --git a/libcutils/include/cutils/android_reboot.h b/libcutils/include/cutils/android_reboot.h
index cd27eef..24e32d5 100644
--- a/libcutils/include/cutils/android_reboot.h
+++ b/libcutils/include/cutils/android_reboot.h
@@ -31,6 +31,7 @@
 
 /* Android reboot reason stored in this property */
 #define LAST_REBOOT_REASON_PROPERTY "persist.sys.boot.reason"
+#define LAST_REBOOT_REASON_FILE "/metadata/bootstat/" LAST_REBOOT_REASON_PROPERTY
 
 /* Reboot or shutdown the system.
  * This call uses ANDROID_RB_PROPERTY to request reboot to init process.
diff --git a/libcutils/include/cutils/ashmem.h b/libcutils/include/cutils/ashmem.h
index abc5068..d80caa6 100644
--- a/libcutils/include/cutils/ashmem.h
+++ b/libcutils/include/cutils/ashmem.h
@@ -26,7 +26,6 @@
 int ashmem_pin_region(int fd, size_t offset, size_t len);
 int ashmem_unpin_region(int fd, size_t offset, size_t len);
 int ashmem_get_size_region(int fd);
-void ashmem_init();
 
 #ifdef __cplusplus
 }
diff --git a/libcutils/include/cutils/jstring.h b/libcutils/include/cutils/jstring.h
deleted file mode 100644
index a342608..0000000
--- a/libcutils/include/cutils/jstring.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2006 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __CUTILS_STRING16_H
-#define __CUTILS_STRING16_H
-
-#include <stdint.h>
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if __STDC_VERSION__ < 201112L && __cplusplus < 201103L
-  typedef uint16_t char16_t;
-#endif
-  // otherwise char16_t is a keyword with the right semantics
-
-extern char * strndup16to8 (const char16_t* s, size_t n);
-extern size_t strnlen16to8 (const char16_t* s, size_t n);
-extern char * strncpy16to8 (char *dest, const char16_t*s, size_t n);
-
-extern char16_t * strdup8to16 (const char* s, size_t *out_len);
-extern size_t strlen8to16 (const char* utf8Str);
-extern char16_t * strcpy8to16 (char16_t *dest, const char*s, size_t *out_len);
-extern char16_t * strcpylen8to16 (char16_t *dest, const char*s, int length,
-    size_t *out_len);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __CUTILS_STRING16_H */
diff --git a/libcutils/include/cutils/memory.h b/libcutils/include/cutils/memory.h
index 4d26882..c6476c1 100644
--- a/libcutils/include/cutils/memory.h
+++ b/libcutils/include/cutils/memory.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_CUTILS_MEMORY_H
-#define ANDROID_CUTILS_MEMORY_H
+#pragma once
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -24,12 +23,6 @@
 extern "C" {
 #endif
 
-/* size is given in bytes and must be multiple of 2 */
-void android_memset16(uint16_t* dst, uint16_t value, size_t size);
-
-/* size is given in bytes and must be multiple of 4 */
-void android_memset32(uint32_t* dst, uint32_t value, size_t size);
-
 #if defined(__GLIBC__) || defined(_WIN32)
 /* Declaration of strlcpy() for platforms that don't already have it. */
 size_t strlcpy(char *dst, const char *src, size_t size);
@@ -38,5 +31,3 @@
 #ifdef __cplusplus
 } // extern "C"
 #endif
-
-#endif // ANDROID_CUTILS_MEMORY_H
diff --git a/libcutils/include/cutils/sockets.h b/libcutils/include/cutils/sockets.h
index 285f150..be21a8f 100644
--- a/libcutils/include/cutils/sockets.h
+++ b/libcutils/include/cutils/sockets.h
@@ -103,14 +103,6 @@
 int socket_close(cutils_socket_t sock);
 
 /*
- * Sets socket receive timeout using SO_RCVTIMEO. Setting |timeout_ms| to 0
- * disables receive timeouts.
- *
- * Return 0 on success.
- */
-int socket_set_receive_timeout(cutils_socket_t sock, int timeout_ms);
-
-/*
  * Returns the local port the socket is bound to or -1 on error.
  */
 int socket_get_local_port(cutils_socket_t sock);
diff --git a/libcutils/include/cutils/trace.h b/libcutils/include/cutils/trace.h
index 79b4b35..c74ee3e 100644
--- a/libcutils/include/cutils/trace.h
+++ b/libcutils/include/cutils/trace.h
@@ -25,7 +25,6 @@
 #include <sys/cdefs.h>
 #include <sys/types.h>
 #include <unistd.h>
-
 #include <cutils/compiler.h>
 
 __BEGIN_DECLS
@@ -118,9 +117,9 @@
 void atrace_set_tracing_enabled(bool enabled);
 
 /**
- * Flag indicating whether setup has been completed, initialized to 0.
- * Nonzero indicates setup has completed.
- * Note: This does NOT indicate whether or not setup was successful.
+ * This is always set to false. This forces code that uses an old version
+ * of this header to always call into atrace_setup, in which we call
+ * atrace_init unconditionally.
  */
 extern atomic_bool atrace_is_ready;
 
@@ -143,24 +142,10 @@
  * This can be explicitly run to avoid setup delay on first trace function.
  */
 #define ATRACE_INIT() atrace_init()
-static inline void atrace_init()
-{
-    if (CC_UNLIKELY(!atomic_load_explicit(&atrace_is_ready, memory_order_acquire))) {
-        atrace_setup();
-    }
-}
-
-/**
- * Get the mask of all tags currently enabled.
- * It can be used as a guard condition around more expensive trace calculations.
- * Every trace function calls this, which ensures atrace_init is run.
- */
 #define ATRACE_GET_ENABLED_TAGS() atrace_get_enabled_tags()
-static inline uint64_t atrace_get_enabled_tags()
-{
-    atrace_init();
-    return atrace_enabled_tags;
-}
+
+void atrace_init();
+uint64_t atrace_get_enabled_tags();
 
 /**
  * Test if a given tag is currently enabled.
diff --git a/libcutils/include/private/android_filesystem_config.h b/libcutils/include/private/android_filesystem_config.h
index 63c3793..b73a29b 100644
--- a/libcutils/include/private/android_filesystem_config.h
+++ b/libcutils/include/private/android_filesystem_config.h
@@ -28,17 +28,10 @@
  *   mediadrm
  * Whose friendly names do not match the #define statements.
  *
- * Additionally, AID_OEM_RESERVED_START and AID_OEM_RESERVED_END
- * can be used to define reserved OEM ranges used for sanity checks
- * during the build process. The rules are, they must end with START/END
- * The proper convention is incrementing a number like so:
- * AID_OEM_RESERVED_START
- * AID_OEM_RESERVED_1_START
- * AID_OEM_RESERVED_2_START
- * ...
- * The same applies to the END.
- * They are not required to be in order, but must not overlap each other and
- * must define a START and END'ing range. START must be smaller than END.
+ * This file must only be used for platform (Google managed, and submitted through AOSP), AIDs.  3rd
+ * party AIDs must be added via config.fs, which will place them in the corresponding partition's
+ * passwd and group files.  There are ranges in this file reserved for AIDs for each 3rd party
+ * partition, from which the system reads passwd and group files.
  */
 
 #ifndef _ANDROID_FILESYSTEM_CONFIG_H_
@@ -135,14 +128,24 @@
 #define AID_GPU_SERVICE 1072     /* GPU service daemon */
 #define AID_NETWORK_STACK 1073   /* network stack service */
 #define AID_GSID 1074            /* GSI service daemon */
+#define AID_FSVERITY_CERT 1075   /* fs-verity key ownership in keystore */
+#define AID_CREDSTORE 1076       /* identity credential manager service */
+#define AID_EXTERNAL_STORAGE 1077 /* Full external storage access including USB OTG volumes */
+#define AID_EXT_DATA_RW 1078      /* GID for app-private data directories on external storage */
+#define AID_EXT_OBB_RW 1079       /* GID for OBB directories on external storage */
+#define AID_CONTEXT_HUB 1080      /* GID for access to the Context Hub */
 /* Changes to this file must be made in AOSP, *not* in internal branches. */
 
 #define AID_SHELL 2000 /* adb and debug shell user */
 #define AID_CACHE 2001 /* cache access */
 #define AID_DIAG 2002  /* access to diagnostic resources */
 
-/* The range 2900-2999 is reserved for OEM, and must never be
- * used here */
+/* The range 2900-2999 is reserved for the vendor partition */
+/* Note that the two 'OEM' ranges pre-dated the vendor partition, so they take the legacy 'OEM'
+ * name. Additionally, they pre-dated passwd/group files, so there are users and groups named oem_#
+ * created automatically for all values in these ranges.  If there is a user/group in a passwd/group
+ * file corresponding to this range, both the oem_# and user/group names will resolve to the same
+ * value. */
 #define AID_OEM_RESERVED_START 2900
 #define AID_OEM_RESERVED_END 2999
 
@@ -159,10 +162,26 @@
 #define AID_WAKELOCK 3010     /* Allow system wakelock read/write access */
 #define AID_UHID 3011         /* Allow read/write to /dev/uhid node */
 
-/* The range 5000-5999 is also reserved for OEM, and must never be used here. */
+/* The range 5000-5999 is also reserved for vendor partition. */
 #define AID_OEM_RESERVED_2_START 5000
 #define AID_OEM_RESERVED_2_END 5999
 
+/* The range 6000-6499 is reserved for the system partition. */
+#define AID_SYSTEM_RESERVED_START 6000
+#define AID_SYSTEM_RESERVED_END 6499
+
+/* The range 6500-6999 is reserved for the odm partition. */
+#define AID_ODM_RESERVED_START 6500
+#define AID_ODM_RESERVED_END 6999
+
+/* The range 7000-7499 is reserved for the product partition. */
+#define AID_PRODUCT_RESERVED_START 7000
+#define AID_PRODUCT_RESERVED_END 7499
+
+/* The range 7500-7999 is reserved for the system_ext partition. */
+#define AID_SYSTEM_EXT_RESERVED_START 7500
+#define AID_SYSTEM_EXT_RESERVED_END 7999
+
 #define AID_EVERYBODY 9997 /* shared between all apps in the same profile */
 #define AID_MISC 9998      /* access to misc storage */
 #define AID_NOBODY 9999
diff --git a/libcutils/include/private/android_projectid_config.h b/libcutils/include/private/android_projectid_config.h
new file mode 100644
index 0000000..7ef3854
--- /dev/null
+++ b/libcutils/include/private/android_projectid_config.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+/*
+ * This file describes the project ID values we use for filesystem quota
+ * tracking.  It is used on devices that don't have the sdcardfs kernel module,
+ * which requires us to use filesystem project IDs for efficient quota
+ * calculation.
+ *
+ * These values are typically set on files and directories using extended
+ * attributes; see vold for examples.
+ */
+
+/* Default project ID for files on external storage. */
+#define PROJECT_ID_EXT_DEFAULT 1000
+/* Project ID for audio files on external storage. */
+#define PROJECT_ID_EXT_MEDIA_AUDIO 1001
+/* Project ID for video files on external storage. */
+#define PROJECT_ID_EXT_MEDIA_VIDEO 1002
+/* Project ID for image files on external storage. */
+#define PROJECT_ID_EXT_MEDIA_IMAGE 1003
+
+/* Start of project IDs for apps to mark external app data. */
+#define PROJECT_ID_EXT_DATA_START 20000
+/* End of project IDs for apps to mark external app data. */
+#define PROJECT_ID_EXT_DATA_END 29999
+
+/* Start of project IDs for apps to mark external cached data. */
+#define PROJECT_ID_EXT_CACHE_START 30000
+/* End of project IDs for apps to mark external cached data. */
+#define PROJECT_ID_EXT_CACHE_END 39999
+
+/* Start of project IDs for apps to mark external OBB data. */
+#define PROJECT_ID_EXT_OBB_START 40000
+/* End of project IDs for apps to mark external OBB data. */
+#define PROJECT_ID_EXT_OBB_END 49999
diff --git a/libcutils/include/private/fs_config.h b/libcutils/include/private/fs_config.h
index 8926491..8a9a1ff 100644
--- a/libcutils/include/private/fs_config.h
+++ b/libcutils/include/private/fs_config.h
@@ -19,44 +19,17 @@
 ** by the device side of adb.
 */
 
-#ifndef _LIBS_CUTILS_PRIVATE_FS_CONFIG_H
-#define _LIBS_CUTILS_PRIVATE_FS_CONFIG_H
+#pragma once
 
 #include <stdint.h>
 #include <sys/cdefs.h>
-#include <sys/types.h>
 
 #if defined(__BIONIC__)
 #include <linux/capability.h>
 #else  // defined(__BIONIC__)
-#include "android_filesystem_capability.h"
+#include <private/android_filesystem_capability.h>
 #endif  // defined(__BIONIC__)
 
-#define CAP_MASK_LONG(cap_name) (1ULL << (cap_name))
-
-/*
- * binary format for the runtime <partition>/etc/fs_config_(dirs|files)
- * filesystem override files.
- */
-
-/* The following structure is stored little endian */
-struct fs_path_config_from_file {
-    uint16_t len;
-    uint16_t mode;
-    uint16_t uid;
-    uint16_t gid;
-    uint64_t capabilities;
-    char prefix[];
-} __attribute__((__aligned__(sizeof(uint64_t))));
-
-struct fs_path_config {
-    unsigned mode;
-    unsigned uid;
-    unsigned gid;
-    uint64_t capabilities;
-    const char* prefix;
-};
-
 /* Rules for directories and files has moved to system/code/libcutils/fs_config.c */
 
 __BEGIN_DECLS
@@ -74,8 +47,4 @@
 void fs_config(const char* path, int dir, const char* target_out_path, unsigned* uid, unsigned* gid,
                unsigned* mode, uint64_t* capabilities);
 
-ssize_t fs_config_generate(char* buffer, size_t length, const struct fs_path_config* pc);
-
 __END_DECLS
-
-#endif /* _LIBS_CUTILS_PRIVATE_FS_CONFIG_H */
diff --git a/libcutils/include_vndk/cutils/jstring.h b/libcutils/include_vndk/cutils/jstring.h
deleted file mode 120000
index f3fd546..0000000
--- a/libcutils/include_vndk/cutils/jstring.h
+++ /dev/null
@@ -1 +0,0 @@
-../../include/cutils/jstring.h
\ No newline at end of file
diff --git a/libcutils/include_vndk/cutils/log.h b/libcutils/include_vndk/cutils/log.h
deleted file mode 100644
index 21dc11e..0000000
--- a/libcutils/include_vndk/cutils/log.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*Special log.h file for VNDK linking modules*/
-/*
- * Copyright (C) 2005-2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
-*/
-#ifndef _LIBS_CUTIL_LOG_H
-#define _LIBS_CUTIL_LOG_H
-
-/* We do not know if developer wanted log/log.h or subset android/log.h */
-#include <log/log.h>
-
-#if defined(__GNUC__)
-#if defined( __clang__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic warning "-W#warnings"
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wpedantic"
-#elif (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR > 9))
-#pragma GCC diagnostic push
-#pragma GCC diagnostic warning "-W#warnings"
-#else
-#pragma GCC diagnostic push
-#pragma GCC diagnostic warning "-Wcpp"
-#endif
-#endif
-
-#warning "Deprecated: don't include cutils/log.h, use either android/log.h or log/log.h"
-
-#if defined(__GNUC__)
-#if defined( __clang__)
-#pragma clang diagnostic pop
-#endif
-#pragma GCC diagnostic pop
-#endif
-
-#endif /* _LIBS_CUTIL_LOG_H */
diff --git a/libcutils/include_vndk/cutils/log.h b/libcutils/include_vndk/cutils/log.h
new file mode 120000
index 0000000..b868d50
--- /dev/null
+++ b/libcutils/include_vndk/cutils/log.h
@@ -0,0 +1 @@
+../../include/cutils/log.h
\ No newline at end of file
diff --git a/libcutils/memset_test.cpp b/libcutils/memset_test.cpp
deleted file mode 100644
index a98485f..0000000
--- a/libcutils/memset_test.cpp
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-
-#include <memory>
-
-#include <cutils/memory.h>
-#include <gtest/gtest.h>
-
-#define FENCEPOST_LENGTH 8
-
-#define MAX_TEST_SIZE (64*1024)
-// Choose values that have no repeating byte values.
-#define MEMSET16_PATTERN 0xb139
-#define MEMSET32_PATTERN 0x48193a27
-
-enum test_e {
-  MEMSET16 = 0,
-  MEMSET32,
-};
-
-static int g_memset16_aligns[][2] = {
-  { 2, 0 },
-  { 4, 0 },
-  { 8, 0 },
-  { 16, 0 },
-  { 32, 0 },
-  { 64, 0 },
-  { 128, 0 },
-
-  { 4, 2 },
-
-  { 8, 2 },
-  { 8, 4 },
-  { 8, 6 },
-
-  { 128, 2 },
-  { 128, 4 },
-  { 128, 6 },
-  { 128, 8 },
-  { 128, 10 },
-  { 128, 12 },
-  { 128, 14 },
-  { 128, 16 },
-};
-
-static int g_memset32_aligns[][2] = {
-  { 4, 0 },
-  { 8, 0 },
-  { 16, 0 },
-  { 32, 0 },
-  { 64, 0 },
-  { 128, 0 },
-
-  { 8, 4 },
-
-  { 128, 4 },
-  { 128, 8 },
-  { 128, 12 },
-  { 128, 16 },
-};
-
-static size_t GetIncrement(size_t len, size_t min_incr) {
-  if (len >= 4096) {
-    return 1024;
-  } else if (len >= 1024) {
-    return 256;
-  }
-  return min_incr;
-}
-
-// Return a pointer into the current buffer with the specified alignment.
-static void *GetAlignedPtr(void *orig_ptr, int alignment, int or_mask) {
-  uint64_t ptr = reinterpret_cast<uint64_t>(orig_ptr);
-  if (alignment > 0) {
-      // When setting the alignment, set it to exactly the alignment chosen.
-      // The pointer returned will be guaranteed not to be aligned to anything
-      // more than that.
-      ptr += alignment - (ptr & (alignment - 1));
-      ptr |= alignment | or_mask;
-  }
-
-  return reinterpret_cast<void*>(ptr);
-}
-
-static void SetFencepost(uint8_t *buffer) {
-  for (int i = 0; i < FENCEPOST_LENGTH; i += 2) {
-    buffer[i] = 0xde;
-    buffer[i+1] = 0xad;
-  }
-}
-
-static void VerifyFencepost(uint8_t *buffer) {
-  for (int i = 0; i < FENCEPOST_LENGTH; i += 2) {
-    if (buffer[i] != 0xde || buffer[i+1] != 0xad) {
-      uint8_t expected_value;
-      if (buffer[i] == 0xde) {
-        i++;
-        expected_value = 0xad;
-      } else {
-        expected_value = 0xde;
-      }
-      ASSERT_EQ(expected_value, buffer[i]);
-    }
-  }
-}
-
-void RunMemsetTests(test_e test_type, uint32_t value, int align[][2], size_t num_aligns) {
-  size_t min_incr = 4;
-  if (test_type == MEMSET16) {
-    min_incr = 2;
-    value |= value << 16;
-  }
-  std::unique_ptr<uint32_t[]> expected_buf(new uint32_t[MAX_TEST_SIZE/sizeof(uint32_t)]);
-  for (size_t i = 0; i < MAX_TEST_SIZE/sizeof(uint32_t); i++) {
-    expected_buf[i] = value;
-  }
-
-  // Allocate one large buffer with lots of extra space so that we can
-  // guarantee that all possible alignments will fit.
-  std::unique_ptr<uint8_t[]> buf(new uint8_t[3*MAX_TEST_SIZE]);
-  uint8_t *buf_align;
-  for (size_t i = 0; i < num_aligns; i++) {
-    size_t incr = min_incr;
-    for (size_t len = incr; len <= MAX_TEST_SIZE; len += incr) {
-      incr = GetIncrement(len, min_incr);
-
-      buf_align = reinterpret_cast<uint8_t*>(GetAlignedPtr(
-          buf.get()+FENCEPOST_LENGTH, align[i][0], align[i][1]));
-
-      SetFencepost(&buf_align[-FENCEPOST_LENGTH]);
-      SetFencepost(&buf_align[len]);
-
-      memset(buf_align, 0xff, len);
-      if (test_type == MEMSET16) {
-        android_memset16(reinterpret_cast<uint16_t*>(buf_align), value, len);
-      } else {
-        android_memset32(reinterpret_cast<uint32_t*>(buf_align), value, len);
-      }
-      ASSERT_EQ(0, memcmp(expected_buf.get(), buf_align, len))
-          << "Failed size " << len << " align " << align[i][0] << " " << align[i][1] << "\n";
-
-      VerifyFencepost(&buf_align[-FENCEPOST_LENGTH]);
-      VerifyFencepost(&buf_align[len]);
-    }
-  }
-}
-
-TEST(libcutils, android_memset16_non_zero) {
-  RunMemsetTests(MEMSET16, MEMSET16_PATTERN, g_memset16_aligns, sizeof(g_memset16_aligns)/sizeof(int[2]));
-}
-
-TEST(libcutils, android_memset16_zero) {
-  RunMemsetTests(MEMSET16, 0, g_memset16_aligns, sizeof(g_memset16_aligns)/sizeof(int[2]));
-}
-
-TEST(libcutils, android_memset32_non_zero) {
-  RunMemsetTests(MEMSET32, MEMSET32_PATTERN, g_memset32_aligns, sizeof(g_memset32_aligns)/sizeof(int[2]));
-}
-
-TEST(libcutils, android_memset32_zero) {
-  RunMemsetTests(MEMSET32, 0, g_memset32_aligns, sizeof(g_memset32_aligns)/sizeof(int[2]));
-}
diff --git a/libcutils/native_handle.cpp b/libcutils/native_handle.cpp
index b409e5b..5804ab1 100644
--- a/libcutils/native_handle.cpp
+++ b/libcutils/native_handle.cpp
@@ -81,6 +81,8 @@
 }
 
 int native_handle_close(const native_handle_t* h) {
+    if (!h) return 0;
+
     if (h->version != sizeof(native_handle_t)) return -EINVAL;
 
     int saved_errno = errno;
diff --git a/libcutils/native_handle_test.cpp b/libcutils/native_handle_test.cpp
new file mode 100644
index 0000000..c1e2f0b
--- /dev/null
+++ b/libcutils/native_handle_test.cpp
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cutils/native_handle.h>
+
+#include <gtest/gtest.h>
+
+TEST(native_handle, native_handle_delete) {
+    ASSERT_EQ(0, native_handle_delete(nullptr));
+}
+
+TEST(native_handle, native_handle_close) {
+    ASSERT_EQ(0, native_handle_close(nullptr));
+}
diff --git a/libcutils/sched_policy_test.cpp b/libcutils/sched_policy_test.cpp
index a321c90..b9e2832 100644
--- a/libcutils/sched_policy_test.cpp
+++ b/libcutils/sched_policy_test.cpp
@@ -107,6 +107,18 @@
 
 TEST(SchedPolicy, get_sched_policy_name) {
     EXPECT_STREQ("bg", get_sched_policy_name(SP_BACKGROUND));
-    EXPECT_STREQ("error", get_sched_policy_name(SchedPolicy(-2)));
-    EXPECT_STREQ("error", get_sched_policy_name(SP_CNT));
+    EXPECT_EQ(nullptr, get_sched_policy_name(SchedPolicy(-2)));
+    EXPECT_EQ(nullptr, get_sched_policy_name(SP_CNT));
+}
+
+TEST(SchedPolicy, get_cpuset_policy_profile_name) {
+    EXPECT_STREQ("CPUSET_SP_BACKGROUND", get_cpuset_policy_profile_name(SP_BACKGROUND));
+    EXPECT_EQ(nullptr, get_cpuset_policy_profile_name(SchedPolicy(-2)));
+    EXPECT_EQ(nullptr, get_cpuset_policy_profile_name(SP_CNT));
+}
+
+TEST(SchedPolicy, get_sched_policy_profile_name) {
+    EXPECT_STREQ("SCHED_SP_BACKGROUND", get_sched_policy_profile_name(SP_BACKGROUND));
+    EXPECT_EQ(nullptr, get_sched_policy_profile_name(SchedPolicy(-2)));
+    EXPECT_EQ(nullptr, get_sched_policy_profile_name(SP_CNT));
 }
diff --git a/libcutils/sockets_test.cpp b/libcutils/sockets_test.cpp
index b762ac1..1fa40bc 100644
--- a/libcutils/sockets_test.cpp
+++ b/libcutils/sockets_test.cpp
@@ -73,25 +73,6 @@
     EXPECT_EQ(0, socket_close(client));
 }
 
-// Tests receive timeout. The timing verification logic must be very coarse to
-// make sure different systems can all pass these tests.
-void TestReceiveTimeout(cutils_socket_t sock) {
-    time_t start_time;
-    char buffer[32];
-
-    // Make sure a 20ms timeout completes in 1 second or less.
-    EXPECT_EQ(0, socket_set_receive_timeout(sock, 20));
-    start_time = time(nullptr);
-    EXPECT_EQ(-1, recv(sock, buffer, sizeof(buffer), 0));
-    EXPECT_LE(difftime(time(nullptr), start_time), 1.0);
-
-    // Make sure a 1250ms timeout takes 1 second or more.
-    EXPECT_EQ(0, socket_set_receive_timeout(sock, 1250));
-    start_time = time(nullptr);
-    EXPECT_EQ(-1, recv(sock, buffer, sizeof(buffer), 0));
-    EXPECT_LE(1.0, difftime(time(nullptr), start_time));
-}
-
 // Tests socket_get_local_port().
 TEST(SocketsTest, TestGetLocalPort) {
     cutils_socket_t server;
@@ -157,32 +138,6 @@
     TestConnectedSockets(handler, client, SOCK_STREAM);
 }
 
-// Tests setting a receive timeout for UDP sockets.
-TEST(SocketsTest, TestUdpReceiveTimeout) {
-    cutils_socket_t sock = socket_inaddr_any_server(0, SOCK_DGRAM);
-    ASSERT_NE(INVALID_SOCKET, sock);
-
-    TestReceiveTimeout(sock);
-
-    EXPECT_EQ(0, socket_close(sock));
-}
-
-// Tests setting a receive timeout for TCP sockets.
-TEST(SocketsTest, TestTcpReceiveTimeout) {
-    cutils_socket_t server = socket_inaddr_any_server(0, SOCK_STREAM);
-    ASSERT_NE(INVALID_SOCKET, server);
-
-    cutils_socket_t client = socket_network_client(
-            "localhost", socket_get_local_port(server), SOCK_STREAM);
-    cutils_socket_t handler = accept(server, nullptr, nullptr);
-    EXPECT_EQ(0, socket_close(server));
-
-    TestReceiveTimeout(handler);
-
-    EXPECT_EQ(0, socket_close(client));
-    EXPECT_EQ(0, socket_close(handler));
-}
-
 // Tests socket_send_buffers() failure.
 TEST(SocketsTest, TestSocketSendBuffersFailure) {
     EXPECT_EQ(-1, socket_send_buffers(INVALID_SOCKET, nullptr, 0));
diff --git a/libcutils/sockets_unix.cpp b/libcutils/sockets_unix.cpp
index 6acdcd8..84663e6 100644
--- a/libcutils/sockets_unix.cpp
+++ b/libcutils/sockets_unix.cpp
@@ -31,13 +31,6 @@
     return close(sock);
 }
 
-int socket_set_receive_timeout(cutils_socket_t sock, int timeout_ms) {
-    timeval tv;
-    tv.tv_sec = timeout_ms / 1000;
-    tv.tv_usec = (timeout_ms % 1000) * 1000;
-    return setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
-}
-
 ssize_t socket_send_buffers(cutils_socket_t sock,
                             const cutils_socket_buffer_t* buffers,
                             size_t num_buffers) {
diff --git a/libcutils/sockets_windows.cpp b/libcutils/sockets_windows.cpp
index df14712..4adb796 100644
--- a/libcutils/sockets_windows.cpp
+++ b/libcutils/sockets_windows.cpp
@@ -54,11 +54,6 @@
     return closesocket(sock);
 }
 
-int socket_set_receive_timeout(cutils_socket_t sock, int timeout_ms) {
-    return setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO,
-                      reinterpret_cast<char*>(&timeout_ms), sizeof(timeout_ms));
-}
-
 ssize_t socket_send_buffers(cutils_socket_t sock,
                             const cutils_socket_buffer_t* buffers,
                             size_t num_buffers) {
diff --git a/libcutils/strdup16to8.cpp b/libcutils/strdup16to8.cpp
deleted file mode 100644
index d89181e..0000000
--- a/libcutils/strdup16to8.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/* libs/cutils/strdup16to8.c
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include <cutils/jstring.h>
-
-#include <assert.h>
-#include <limits.h>  /* for SIZE_MAX */
-#include <stdlib.h>
-
-
-/**
- * Given a UTF-16 string, compute the length of the corresponding UTF-8
- * string in bytes.
- */
-extern size_t strnlen16to8(const char16_t* utf16Str, size_t len)
-{
-    size_t utf8Len = 0;
-
-    /* A small note on integer overflow. The result can
-     * potentially be as big as 3*len, which will overflow
-     * for len > SIZE_MAX/3.
-     *
-     * Moreover, the result of a strnlen16to8 is typically used
-     * to allocate a destination buffer to strncpy16to8 which
-     * requires one more byte to terminate the UTF-8 copy, and
-     * this is generally done by careless users by incrementing
-     * the result without checking for integer overflows, e.g.:
-     *
-     *   dst = malloc(strnlen16to8(utf16,len)+1)
-     *
-     * Due to this, the following code will try to detect
-     * overflows, and never return more than (SIZE_MAX-1)
-     * when it detects one. A careless user will try to malloc
-     * SIZE_MAX bytes, which will return NULL which can at least
-     * be detected appropriately.
-     *
-     * As far as I know, this function is only used by strndup16(),
-     * but better be safe than sorry.
-     */
-
-    /* Fast path for the usual case where 3*len is < SIZE_MAX-1.
-     */
-    if (len < (SIZE_MAX-1)/3) {
-        while (len != 0) {
-            len--;
-            unsigned int uic = *utf16Str++;
-
-            if (uic > 0x07ff)
-                utf8Len += 3;
-            else if (uic > 0x7f || uic == 0)
-                utf8Len += 2;
-            else
-                utf8Len++;
-        }
-        return utf8Len;
-    }
-
-    /* The slower but paranoid version */
-    while (len != 0) {
-        len--;
-        unsigned int  uic     = *utf16Str++;
-        size_t        utf8Cur = utf8Len;
-
-        if (uic > 0x07ff)
-            utf8Len += 3;
-        else if (uic > 0x7f || uic == 0)
-            utf8Len += 2;
-        else
-            utf8Len++;
-
-        if (utf8Len < utf8Cur) /* overflow detected */
-            return SIZE_MAX-1;
-    }
-
-    /* don't return SIZE_MAX to avoid common user bug */
-    if (utf8Len == SIZE_MAX)
-        utf8Len = SIZE_MAX-1;
-
-    return utf8Len;
-}
-
-
-/**
- * Convert a Java-Style UTF-16 string + length to a JNI-Style UTF-8 string.
- *
- * This basically means: embedded \0's in the UTF-16 string are encoded
- * as "0xc0 0x80"
- *
- * Make sure you allocate "utf8Str" with the result of strlen16to8() + 1,
- * not just "len".
- *
- * Please note, a terminated \0 is always added, so your result will always
- * be "strlen16to8() + 1" bytes long.
- */
-extern char* strncpy16to8(char* utf8Str, const char16_t* utf16Str, size_t len)
-{
-    char* utf8cur = utf8Str;
-
-    /* Note on overflows: We assume the user did check the result of
-     * strnlen16to8() properly or at a minimum checked the result of
-     * its malloc(SIZE_MAX) in case of overflow.
-     */
-    while (len != 0) {
-        len--;
-        unsigned int uic = *utf16Str++;
-
-        if (uic > 0x07ff) {
-            *utf8cur++ = (uic >> 12) | 0xe0;
-            *utf8cur++ = ((uic >> 6) & 0x3f) | 0x80;
-            *utf8cur++ = (uic & 0x3f) | 0x80;
-        } else if (uic > 0x7f || uic == 0) {
-            *utf8cur++ = (uic >> 6) | 0xc0;
-            *utf8cur++ = (uic & 0x3f) | 0x80;
-        } else {
-            *utf8cur++ = uic;
-
-            if (uic == 0) {
-                break;
-            }
-        }
-    }
-
-   *utf8cur = '\0';
-
-   return utf8Str;
-}
-
-/**
- * Convert a UTF-16 string to UTF-8.
- *
- */
-char * strndup16to8 (const char16_t* s, size_t n)
-{
-    if (s == NULL) {
-        return NULL;
-    }
-
-    size_t len = strnlen16to8(s, n);
-
-    /* We are paranoid, and we check for SIZE_MAX-1
-     * too since it is an overflow value for our
-     * strnlen16to8 implementation.
-     */
-    if (len >= SIZE_MAX-1)
-        return NULL;
-
-    char* ret = static_cast<char*>(malloc(len + 1));
-    if (ret == NULL)
-        return NULL;
-
-    strncpy16to8 (ret, s, n);
-
-    return ret;
-}
diff --git a/libcutils/strdup8to16.cpp b/libcutils/strdup8to16.cpp
deleted file mode 100644
index d1e51b9..0000000
--- a/libcutils/strdup8to16.cpp
+++ /dev/null
@@ -1,215 +0,0 @@
-/* libs/cutils/strdup8to16.c
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include <cutils/jstring.h>
-
-#include <assert.h>
-#include <limits.h>
-#include <stdlib.h>
-
-/* See http://www.unicode.org/reports/tr22/ for discussion
- * on invalid sequences
- */
-
-#define UTF16_REPLACEMENT_CHAR 0xfffd
-
-/* Clever trick from Dianne that returns 1-4 depending on leading bit sequence*/
-#define UTF8_SEQ_LENGTH(ch) (((0xe5000000 >> (((ch) >> 3) & 0x1e)) & 3) + 1)
-
-/* note: macro expands to multiple lines */
-#define UTF8_SHIFT_AND_MASK(unicode, byte)  \
-            (unicode)<<=6; (unicode) |= (0x3f & (byte));
-
-#define UNICODE_UPPER_LIMIT 0x10fffd    
-
-/**
- * out_len is an out parameter (which may not be null) containing the
- * length of the UTF-16 string (which may contain embedded \0's)
- */
-
-extern char16_t * strdup8to16 (const char* s, size_t *out_len)
-{
-    char16_t *ret;
-    size_t len;
-
-    if (s == NULL) return NULL;
-
-    len = strlen8to16(s);
-
-    // fail on overflow
-    if (len && SIZE_MAX/len < sizeof(char16_t))
-        return NULL;
-
-    // no plus-one here. UTF-16 strings are not null terminated
-    ret = (char16_t *) malloc (sizeof(char16_t) * len);
-
-    return strcpy8to16 (ret, s, out_len);
-}
-
-/**
- * Like "strlen", but for strings encoded with Java's modified UTF-8.
- *
- * The value returned is the number of UTF-16 characters required
- * to represent this string.
- */
-extern size_t strlen8to16 (const char* utf8Str)
-{
-    size_t len = 0;
-    int ic;
-    int expected = 0;
-
-    while ((ic = *utf8Str++) != '\0') {
-        /* bytes that start 0? or 11 are lead bytes and count as characters.*/
-        /* bytes that start 10 are extention bytes and are not counted */
-         
-        if ((ic & 0xc0) == 0x80) {
-            /* count the 0x80 extention bytes. if we have more than
-             * expected, then start counting them because strcpy8to16
-             * will insert UTF16_REPLACEMENT_CHAR's
-             */
-            expected--;
-            if (expected < 0) {
-                len++;
-            }
-        } else {
-            len++;
-            expected = UTF8_SEQ_LENGTH(ic) - 1;
-
-            /* this will result in a surrogate pair */
-            if (expected == 3) {
-                len++;
-            }
-        }
-    }
-
-    return len;
-}
-
-
-
-/*
- * Retrieve the next UTF-32 character from a UTF-8 string.
- *
- * Stops at inner \0's
- *
- * Returns UTF16_REPLACEMENT_CHAR if an invalid sequence is encountered
- *
- * Advances "*pUtf8Ptr" to the start of the next character.
- */
-static inline uint32_t getUtf32FromUtf8(const char** pUtf8Ptr)
-{
-    uint32_t ret;
-    int seq_len;
-    int i;
-
-    /* Mask for leader byte for lengths 1, 2, 3, and 4 respectively*/
-    static const unsigned char leaderMask[4] = {0xff, 0x1f, 0x0f, 0x07};
-
-    /* Bytes that start with bits "10" are not leading characters. */
-    if (((**pUtf8Ptr) & 0xc0) == 0x80) {
-        (*pUtf8Ptr)++;
-        return UTF16_REPLACEMENT_CHAR;
-    }
-
-    /* note we tolerate invalid leader 11111xxx here */    
-    seq_len = UTF8_SEQ_LENGTH(**pUtf8Ptr);
-
-    ret = (**pUtf8Ptr) & leaderMask [seq_len - 1];
-
-    if (**pUtf8Ptr == '\0') return ret;
-
-    (*pUtf8Ptr)++;
-    for (i = 1; i < seq_len ; i++, (*pUtf8Ptr)++) {
-        if ((**pUtf8Ptr) == '\0') return UTF16_REPLACEMENT_CHAR;
-        if (((**pUtf8Ptr) & 0xc0) != 0x80) return UTF16_REPLACEMENT_CHAR;
-
-        UTF8_SHIFT_AND_MASK(ret, **pUtf8Ptr);
-    }
-
-    return ret;
-}
-
-
-/**
- * out_len is an out parameter (which may not be null) containing the
- * length of the UTF-16 string (which may contain embedded \0's)
- */
-
-extern char16_t * strcpy8to16 (char16_t *utf16Str, const char*utf8Str, 
-                                       size_t *out_len)
-{   
-    char16_t *dest = utf16Str;
-
-    while (*utf8Str != '\0') {
-        uint32_t ret;
-
-        ret = getUtf32FromUtf8(&utf8Str);
-
-        if (ret <= 0xffff) {
-            *dest++ = (char16_t) ret;
-        } else if (ret <= UNICODE_UPPER_LIMIT)  {
-            /* Create surrogate pairs */
-            /* See http://en.wikipedia.org/wiki/UTF-16/UCS-2#Method_for_code_points_in_Plane_1.2C_Plane_2 */
-
-            *dest++ = 0xd800 | ((ret - 0x10000) >> 10);
-            *dest++ = 0xdc00 | ((ret - 0x10000) &  0x3ff);
-        } else {
-            *dest++ = UTF16_REPLACEMENT_CHAR;
-        }
-    }
-
-    *out_len = dest - utf16Str;
-
-    return utf16Str;
-}
-
-/**
- * length is the number of characters in the UTF-8 string.
- * out_len is an out parameter (which may not be null) containing the
- * length of the UTF-16 string (which may contain embedded \0's)
- */
-
-extern char16_t * strcpylen8to16 (char16_t *utf16Str, const char*utf8Str,
-                                       int length, size_t *out_len)
-{
-    /* TODO: Share more of this code with the method above. Only 2 lines changed. */
-    
-    char16_t *dest = utf16Str;
-
-    const char *end = utf8Str + length; /* This line */
-    while (utf8Str < end) {             /* and this line changed. */
-        uint32_t ret;
-
-        ret = getUtf32FromUtf8(&utf8Str);
-
-        if (ret <= 0xffff) {
-            *dest++ = (char16_t) ret;
-        } else if (ret <= UNICODE_UPPER_LIMIT)  {
-            /* Create surrogate pairs */
-            /* See http://en.wikipedia.org/wiki/UTF-16/UCS-2#Method_for_code_points_in_Plane_1.2C_Plane_2 */
-
-            *dest++ = 0xd800 | ((ret - 0x10000) >> 10);
-            *dest++ = 0xdc00 | ((ret - 0x10000) &  0x3ff);
-        } else {
-            *dest++ = UTF16_REPLACEMENT_CHAR;
-        }
-    }
-
-    *out_len = dest - utf16Str;
-
-    return utf16Str;
-}
diff --git a/libcutils/trace-container.cpp b/libcutils/trace-container.cpp
index d981f8f..f7eed48 100644
--- a/libcutils/trace-container.cpp
+++ b/libcutils/trace-container.cpp
@@ -39,6 +39,11 @@
 static pthread_mutex_t  atrace_enabling_mutex        = PTHREAD_MUTEX_INITIALIZER;
 static pthread_rwlock_t atrace_container_sock_rwlock = PTHREAD_RWLOCK_INITIALIZER;
 
+static void atrace_seq_number_changed(uint32_t, uint32_t seq_no) {
+    pthread_once(&atrace_once_control, atrace_init_once);
+    atomic_store_explicit(&last_sequence_number, seq_no, memory_order_relaxed);
+}
+
 static bool atrace_init_container_sock()
 {
     pthread_rwlock_wrlock(&atrace_container_sock_rwlock);
@@ -82,24 +87,28 @@
 
 static void atrace_init_once()
 {
-    atrace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
+    atrace_marker_fd = open("/sys/kernel/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
     if (atrace_marker_fd < 0) {
-        // We're in container, ftrace may be disabled. In such case, we use the
-        // socket to write trace event.
+        // try debugfs
+        atrace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
+        if (atrace_marker_fd < 0) {
+            // We're in container, ftrace may be disabled. In such case, we use the
+            // socket to write trace event.
 
-        // Protect the initialization of container socket from
-        // atrace_set_tracing_enabled.
-        pthread_mutex_lock(&atrace_enabling_mutex);
-        atrace_use_container_sock = true;
-        bool success = false;
-        if (atomic_load_explicit(&atrace_is_enabled, memory_order_acquire)) {
-            success = atrace_init_container_sock();
-        }
-        pthread_mutex_unlock(&atrace_enabling_mutex);
+            // Protect the initialization of container socket from
+            // atrace_set_tracing_enabled.
+            pthread_mutex_lock(&atrace_enabling_mutex);
+            atrace_use_container_sock = true;
+            bool success = false;
+            if (atomic_load_explicit(&atrace_is_enabled, memory_order_acquire)) {
+                success = atrace_init_container_sock();
+            }
+            pthread_mutex_unlock(&atrace_enabling_mutex);
 
-        if (!success) {
-            atrace_enabled_tags = 0;
-            goto done;
+            if (!success) {
+                atrace_enabled_tags = 0;
+                goto done;
+            }
         }
     }
     atrace_enabled_tags = atrace_get_property();
diff --git a/libcutils/trace-dev.cpp b/libcutils/trace-dev.cpp
index 4da8215..5a09a2d 100644
--- a/libcutils/trace-dev.cpp
+++ b/libcutils/trace-dev.cpp
@@ -32,20 +32,41 @@
 {
     atrace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
     if (atrace_marker_fd == -1) {
-        ALOGE("Error opening trace file: %s (%d)", strerror(errno), errno);
-        atrace_enabled_tags = 0;
-        goto done;
+        atrace_marker_fd = open("/sys/kernel/tracing/trace_marker", O_WRONLY | O_CLOEXEC);
     }
 
-    atrace_enabled_tags = atrace_get_property();
+    if (atrace_marker_fd == -1) {
+        ALOGE("Error opening trace file: %s (%d)", strerror(errno), errno);
+        atrace_enabled_tags = 0;
+    } else {
+      atrace_enabled_tags = atrace_get_property();
+    }
+}
 
-done:
-    atomic_store_explicit(&atrace_is_ready, true, memory_order_release);
+static void atrace_seq_number_changed(uint32_t prev_seq_no, uint32_t seq_no) {
+    if (!atomic_load_explicit(&atrace_is_enabled, memory_order_acquire)) {
+        return;
+    }
+
+    // Someone raced us.
+    if (!atomic_compare_exchange_strong(&last_sequence_number, &prev_seq_no, seq_no)) {
+        return;
+    }
+
+    if (CC_UNLIKELY(prev_seq_no == kSeqNoNotInit)) {
+#if defined(__BIONIC__)
+        const prop_info* new_pi = __system_property_find("debug.atrace.tags.enableflags");
+        if (new_pi) atrace_property_info = new_pi;
+#endif
+        pthread_once(&atrace_once_control, atrace_init_once);
+    }
+
+    atrace_update_tags();
 }
 
 void atrace_setup()
 {
-    pthread_once(&atrace_once_control, atrace_init_once);
+    atrace_init();
 }
 
 void atrace_begin_body(const char* name)
diff --git a/libcutils/trace-dev.inc b/libcutils/trace-dev.inc
index e3da77b..6543426 100644
--- a/libcutils/trace-dev.inc
+++ b/libcutils/trace-dev.inc
@@ -34,6 +34,11 @@
 #include <log/log.h>
 #include <log/log_properties.h>
 
+#if defined(__BIONIC__)
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
+#endif
+
 /**
  * Maximum size of a message that can be logged to the trace buffer.
  * Note this message includes a tag, the pid, and the string given as the name.
@@ -41,12 +46,54 @@
  */
 #define ATRACE_MESSAGE_LENGTH 1024
 
-atomic_bool             atrace_is_ready      = ATOMIC_VAR_INIT(false);
-int                     atrace_marker_fd     = -1;
-uint64_t                atrace_enabled_tags  = ATRACE_TAG_NOT_READY;
-static bool             atrace_is_debuggable = false;
-static atomic_bool      atrace_is_enabled    = ATOMIC_VAR_INIT(true);
-static pthread_mutex_t  atrace_tags_mutex    = PTHREAD_MUTEX_INITIALIZER;
+constexpr uint32_t kSeqNoNotInit = static_cast<uint32_t>(-1);
+
+atomic_bool              atrace_is_ready      = ATOMIC_VAR_INIT(false);
+int                      atrace_marker_fd     = -1;
+uint64_t                 atrace_enabled_tags  = ATRACE_TAG_NOT_READY;
+static bool              atrace_is_debuggable = false;
+static atomic_bool       atrace_is_enabled    = ATOMIC_VAR_INIT(true);
+static pthread_mutex_t   atrace_tags_mutex    = PTHREAD_MUTEX_INITIALIZER;
+
+/**
+ * Sequence number of debug.atrace.tags.enableflags the last time the enabled
+ * tags were reloaded.
+ **/
+static _Atomic(uint32_t) last_sequence_number = ATOMIC_VAR_INIT(kSeqNoNotInit);
+
+#if defined(__BIONIC__)
+// All zero prop_info that has a sequence number of 0. This is easier than
+// depending on implementation details of the property implementation.
+//
+// prop_info is static_assert-ed to be 96 bytes, which cannot change due to
+// ABI compatibility.
+alignas(uint64_t) static char empty_pi[96];
+static const prop_info* atrace_property_info = reinterpret_cast<const prop_info*>(empty_pi);
+#endif
+
+/**
+ * This is called when the sequence number of debug.atrace.tags.enableflags
+ * changes and we need to reload the enabled tags.
+ **/
+static void atrace_seq_number_changed(uint32_t prev_seq_no, uint32_t seq_no);
+
+void atrace_init() {
+#if defined(__BIONIC__)
+    uint32_t seq_no = __system_property_serial(atrace_property_info);  // Acquire semantics.
+#else
+    uint32_t seq_no = 0;
+#endif
+    uint32_t prev_seq_no = atomic_load_explicit(&last_sequence_number, memory_order_relaxed);
+    if (CC_UNLIKELY(seq_no != prev_seq_no)) {
+        atrace_seq_number_changed(prev_seq_no, seq_no);
+    }
+}
+
+uint64_t atrace_get_enabled_tags()
+{
+    atrace_init();
+    return atrace_enabled_tags;
+}
 
 // Set whether this process is debuggable, which determines whether
 // application-level tracing is allowed when the ro.debuggable system property
@@ -136,24 +183,22 @@
 void atrace_update_tags()
 {
     uint64_t tags;
-    if (CC_UNLIKELY(atomic_load_explicit(&atrace_is_ready, memory_order_acquire))) {
-        if (atomic_load_explicit(&atrace_is_enabled, memory_order_acquire)) {
-            tags = atrace_get_property();
-            pthread_mutex_lock(&atrace_tags_mutex);
-            atrace_enabled_tags = tags;
-            pthread_mutex_unlock(&atrace_tags_mutex);
-        } else {
-            // Tracing is disabled for this process, so we simply don't
-            // initialize the tags.
-            pthread_mutex_lock(&atrace_tags_mutex);
-            atrace_enabled_tags = ATRACE_TAG_NOT_READY;
-            pthread_mutex_unlock(&atrace_tags_mutex);
-        }
+    if (atomic_load_explicit(&atrace_is_enabled, memory_order_acquire)) {
+        tags = atrace_get_property();
+        pthread_mutex_lock(&atrace_tags_mutex);
+        atrace_enabled_tags = tags;
+        pthread_mutex_unlock(&atrace_tags_mutex);
+    } else {
+        // Tracing is disabled for this process, so we simply don't
+        // initialize the tags.
+        pthread_mutex_lock(&atrace_tags_mutex);
+        atrace_enabled_tags = ATRACE_TAG_NOT_READY;
+        pthread_mutex_unlock(&atrace_tags_mutex);
     }
 }
 
 #define WRITE_MSG(format_begin, format_end, name, value) { \
-    char buf[ATRACE_MESSAGE_LENGTH]; \
+    char buf[ATRACE_MESSAGE_LENGTH] __attribute__((uninitialized));     \
     int pid = getpid(); \
     int len = snprintf(buf, sizeof(buf), format_begin "%s" format_end, pid, \
         name, value); \
diff --git a/libcutils/trace-host.cpp b/libcutils/trace-host.cpp
index d47cc18..9781ad3 100644
--- a/libcutils/trace-host.cpp
+++ b/libcutils/trace-host.cpp
@@ -30,3 +30,8 @@
 void atrace_async_end_body(const char* /*name*/, int32_t /*cookie*/) {}
 void atrace_int_body(const char* /*name*/, int32_t /*value*/) {}
 void atrace_int64_body(const char* /*name*/, int64_t /*value*/) {}
+void atrace_init() {}
+uint64_t atrace_get_enabled_tags()
+{
+    return ATRACE_TAG_NOT_READY;
+}
diff --git a/libcutils/uevent.cpp b/libcutils/uevent.cpp
index 721de7c..bf244d2 100644
--- a/libcutils/uevent.cpp
+++ b/libcutils/uevent.cpp
@@ -60,7 +60,7 @@
     struct ucred* cred;
 
     *uid = -1;
-    ssize_t n = recvmsg(socket, &hdr, 0);
+    ssize_t n = TEMP_FAILURE_RETRY(recvmsg(socket, &hdr, 0));
     if (n <= 0) {
         return n;
     }
diff --git a/libgrallocusage/Android.bp b/libgrallocusage/Android.bp
index d27feb9..33ae13d 100644
--- a/libgrallocusage/Android.bp
+++ b/libgrallocusage/Android.bp
@@ -20,15 +20,11 @@
         "-Werror",
     ],
     cppflags: [
-        "-Weverything",
-        "-Wno-c++98-compat-pedantic",
-        // Hide errors in headers we include
-        "-Wno-global-constructors",
-        "-Wno-exit-time-destructors",
-        "-Wno-padded",
+        "-Wextra",
     ],
     srcs: ["GrallocUsageConversion.cpp"],
     export_include_dirs: ["include"],
     shared_libs: ["android.hardware.graphics.allocator@2.0"],
     header_libs: ["libhardware_headers"],
+    min_sdk_version: "29",
 }
diff --git a/libion/Android.bp b/libion/Android.bp
deleted file mode 100644
index 2f73d92..0000000
--- a/libion/Android.bp
+++ /dev/null
@@ -1,29 +0,0 @@
-cc_library {
-    name: "libion",
-    vendor_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
-    srcs: ["ion.c"],
-    shared_libs: ["liblog"],
-    local_include_dirs: [
-        "include",
-        "kernel-headers",
-    ],
-    export_include_dirs: [
-        "include",
-        "kernel-headers",
-    ],
-    cflags: ["-Werror"],
-}
-
-cc_binary {
-    name: "iontest",
-    srcs: ["ion_test.c"],
-    static_libs: ["libion"],
-    shared_libs: ["liblog"],
-    cflags: ["-Werror"],
-}
-
-subdirs = ["tests"]
diff --git a/libion/include/ion/ion.h b/libion/include/ion/ion.h
deleted file mode 100644
index a60d24e..0000000
--- a/libion/include/ion/ion.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- *  ion.c
- *
- * Memory Allocator functions for ion
- *
- *   Copyright 2011 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#ifndef __SYS_CORE_ION_H
-#define __SYS_CORE_ION_H
-
-#include <sys/types.h>
-#include <linux/ion.h>
-
-__BEGIN_DECLS
-
-struct ion_handle;
-
-int ion_open();
-int ion_close(int fd);
-int ion_alloc(int fd, size_t len, size_t align, unsigned int heap_mask,
-              unsigned int flags, ion_user_handle_t *handle);
-int ion_alloc_fd(int fd, size_t len, size_t align, unsigned int heap_mask,
-              unsigned int flags, int *handle_fd);
-int ion_sync_fd(int fd, int handle_fd);
-int ion_free(int fd, ion_user_handle_t handle);
-int ion_map(int fd, ion_user_handle_t handle, size_t length, int prot,
-            int flags, off_t offset, unsigned char **ptr, int *map_fd);
-int ion_share(int fd, ion_user_handle_t handle, int *share_fd);
-int ion_import(int fd, int share_fd, ion_user_handle_t *handle);
-
-/**
-  * Add 4.12+ kernel ION interfaces here for forward compatibility
-  * This should be needed till the pre-4.12+ ION interfaces are backported.
-  */
-int ion_query_heap_cnt(int fd, int* cnt);
-int ion_query_get_heaps(int fd, int cnt, void* buffers);
-
-int ion_is_legacy(int fd);
-
-__END_DECLS
-
-#endif /* __SYS_CORE_ION_H */
diff --git a/libion/ion.c b/libion/ion.c
deleted file mode 100644
index b8de5a4..0000000
--- a/libion/ion.c
+++ /dev/null
@@ -1,221 +0,0 @@
-/*
- *  ion.c
- *
- * Memory Allocator functions for ion
- *
- *   Copyright 2011 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-#define LOG_TAG "ion"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <linux/ion.h>
-#include <stdatomic.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <ion/ion.h>
-#include "ion_4.12.h"
-
-#include <log/log.h>
-
-enum ion_version { ION_VERSION_UNKNOWN, ION_VERSION_MODERN, ION_VERSION_LEGACY };
-
-static atomic_int g_ion_version = ATOMIC_VAR_INIT(ION_VERSION_UNKNOWN);
-
-int ion_is_legacy(int fd) {
-    int version = atomic_load_explicit(&g_ion_version, memory_order_acquire);
-    if (version == ION_VERSION_UNKNOWN) {
-        /**
-          * Check for FREE IOCTL here; it is available only in the old
-          * kernels, not the new ones.
-          */
-        int err = ion_free(fd, (ion_user_handle_t)NULL);
-        version = (err == -ENOTTY) ? ION_VERSION_MODERN : ION_VERSION_LEGACY;
-        atomic_store_explicit(&g_ion_version, version, memory_order_release);
-    }
-    return version == ION_VERSION_LEGACY;
-}
-
-int ion_open() {
-    int fd = open("/dev/ion", O_RDONLY | O_CLOEXEC);
-    if (fd < 0) ALOGE("open /dev/ion failed: %s", strerror(errno));
-
-    return fd;
-}
-
-int ion_close(int fd) {
-    int ret = close(fd);
-    if (ret < 0) return -errno;
-    return ret;
-}
-
-static int ion_ioctl(int fd, int req, void* arg) {
-    int ret = ioctl(fd, req, arg);
-    if (ret < 0) {
-        ALOGE("ioctl %x failed with code %d: %s", req, ret, strerror(errno));
-        return -errno;
-    }
-    return ret;
-}
-
-int ion_alloc(int fd, size_t len, size_t align, unsigned int heap_mask, unsigned int flags,
-              ion_user_handle_t* handle) {
-    int ret = 0;
-
-    if ((handle == NULL) || (!ion_is_legacy(fd))) return -EINVAL;
-
-    struct ion_allocation_data data = {
-        .len = len, .align = align, .heap_id_mask = heap_mask, .flags = flags,
-    };
-
-    ret = ion_ioctl(fd, ION_IOC_ALLOC, &data);
-    if (ret < 0) return ret;
-
-    *handle = data.handle;
-
-    return ret;
-}
-
-int ion_free(int fd, ion_user_handle_t handle) {
-    struct ion_handle_data data = {
-        .handle = handle,
-    };
-    return ion_ioctl(fd, ION_IOC_FREE, &data);
-}
-
-int ion_map(int fd, ion_user_handle_t handle, size_t length, int prot, int flags, off_t offset,
-            unsigned char** ptr, int* map_fd) {
-    if (!ion_is_legacy(fd)) return -EINVAL;
-    int ret;
-    unsigned char* tmp_ptr;
-    struct ion_fd_data data = {
-        .handle = handle,
-    };
-
-    if (map_fd == NULL) return -EINVAL;
-    if (ptr == NULL) return -EINVAL;
-
-    ret = ion_ioctl(fd, ION_IOC_MAP, &data);
-    if (ret < 0) return ret;
-    if (data.fd < 0) {
-        ALOGE("map ioctl returned negative fd");
-        return -EINVAL;
-    }
-    tmp_ptr = mmap(NULL, length, prot, flags, data.fd, offset);
-    if (tmp_ptr == MAP_FAILED) {
-        ALOGE("mmap failed: %s", strerror(errno));
-        return -errno;
-    }
-    *map_fd = data.fd;
-    *ptr = tmp_ptr;
-    return ret;
-}
-
-int ion_share(int fd, ion_user_handle_t handle, int* share_fd) {
-    int ret;
-    struct ion_fd_data data = {
-        .handle = handle,
-    };
-
-    if (!ion_is_legacy(fd)) return -EINVAL;
-    if (share_fd == NULL) return -EINVAL;
-
-    ret = ion_ioctl(fd, ION_IOC_SHARE, &data);
-    if (ret < 0) return ret;
-    if (data.fd < 0) {
-        ALOGE("share ioctl returned negative fd");
-        return -EINVAL;
-    }
-    *share_fd = data.fd;
-    return ret;
-}
-
-int ion_alloc_fd(int fd, size_t len, size_t align, unsigned int heap_mask, unsigned int flags,
-                 int* handle_fd) {
-    ion_user_handle_t handle;
-    int ret;
-
-    if (!ion_is_legacy(fd)) {
-        struct ion_new_allocation_data data = {
-            .len = len,
-            .heap_id_mask = heap_mask,
-            .flags = flags,
-        };
-
-        ret = ion_ioctl(fd, ION_IOC_NEW_ALLOC, &data);
-        if (ret < 0) return ret;
-        *handle_fd = data.fd;
-    } else {
-        ret = ion_alloc(fd, len, align, heap_mask, flags, &handle);
-        if (ret < 0) return ret;
-        ret = ion_share(fd, handle, handle_fd);
-        ion_free(fd, handle);
-    }
-    return ret;
-}
-
-int ion_import(int fd, int share_fd, ion_user_handle_t* handle) {
-    int ret;
-    struct ion_fd_data data = {
-        .fd = share_fd,
-    };
-
-    if (!ion_is_legacy(fd)) return -EINVAL;
-
-    if (handle == NULL) return -EINVAL;
-
-    ret = ion_ioctl(fd, ION_IOC_IMPORT, &data);
-    if (ret < 0) return ret;
-    *handle = data.handle;
-    return ret;
-}
-
-int ion_sync_fd(int fd, int handle_fd) {
-    struct ion_fd_data data = {
-        .fd = handle_fd,
-    };
-
-    if (!ion_is_legacy(fd)) return -EINVAL;
-
-    return ion_ioctl(fd, ION_IOC_SYNC, &data);
-}
-
-int ion_query_heap_cnt(int fd, int* cnt) {
-    int ret;
-    struct ion_heap_query query;
-
-    memset(&query, 0, sizeof(query));
-
-    ret = ion_ioctl(fd, ION_IOC_HEAP_QUERY, &query);
-    if (ret < 0) return ret;
-
-    *cnt = query.cnt;
-    return ret;
-}
-
-int ion_query_get_heaps(int fd, int cnt, void* buffers) {
-    int ret;
-    struct ion_heap_query query = {
-        .cnt = cnt, .heaps = (uintptr_t)buffers,
-    };
-
-    ret = ion_ioctl(fd, ION_IOC_HEAP_QUERY, &query);
-    return ret;
-}
diff --git a/libion/ion_4.12.h b/libion/ion_4.12.h
deleted file mode 100644
index 6ae79d4..0000000
--- a/libion/ion_4.12.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Adapted from drivers/staging/android/uapi/ion.h
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _UAPI_LINUX_ION_NEW_H
-#define _UAPI_LINUX_ION_NEW_H
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
-
-/**
- * DOC: Ion Userspace API
- *
- * create a client by opening /dev/ion
- * most operations handled via following ioctls
- *
- */
-
-/**
- * struct ion_new_allocation_data - metadata passed from userspace for allocations
- * @len:		size of the allocation
- * @heap_id_mask:	mask of heap ids to allocate from
- * @flags:		flags passed to heap
- * @handle:		pointer that will be populated with a cookie to use to
- *			refer to this allocation
- *
- * Provided by userspace as an argument to the ioctl - added _new to denote
- * this belongs to the new ION interface.
- */
-struct ion_new_allocation_data {
-    __u64 len;
-    __u32 heap_id_mask;
-    __u32 flags;
-    __u32 fd;
-    __u32 unused;
-};
-
-#define MAX_HEAP_NAME 32
-
-/**
- * struct ion_heap_data - data about a heap
- * @name - first 32 characters of the heap name
- * @type - heap type
- * @heap_id - heap id for the heap
- */
-struct ion_heap_data {
-    char name[MAX_HEAP_NAME];
-    __u32 type;
-    __u32 heap_id;
-    __u32 reserved0;
-    __u32 reserved1;
-    __u32 reserved2;
-};
-
-/**
- * struct ion_heap_query - collection of data about all heaps
- * @cnt - total number of heaps to be copied
- * @heaps - buffer to copy heap data
- */
-struct ion_heap_query {
-    __u32 cnt;       /* Total number of heaps to be copied */
-    __u32 reserved0; /* align to 64bits */
-    __u64 heaps;     /* buffer to be populated */
-    __u32 reserved1;
-    __u32 reserved2;
-};
-
-#define ION_IOC_MAGIC 'I'
-
-/**
- * DOC: ION_IOC_NEW_ALLOC - allocate memory
- *
- * Takes an ion_allocation_data struct and returns it with the handle field
- * populated with the opaque handle for the allocation.
- * TODO: This IOCTL will clash by design; however, only one of
- *  ION_IOC_ALLOC or ION_IOC_NEW_ALLOC paths will be exercised,
- *  so this should not conflict.
- */
-#define ION_IOC_NEW_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_new_allocation_data)
-
-/**
- * DOC: ION_IOC_FREE - free memory
- *
- * Takes an ion_handle_data struct and frees the handle.
- *
- * #define ION_IOC_FREE		_IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
- * This will come from the older kernels, so don't redefine here
- */
-
-/**
- * DOC: ION_IOC_SHARE - creates a file descriptor to use to share an allocation
- *
- * Takes an ion_fd_data struct with the handle field populated with a valid
- * opaque handle.  Returns the struct with the fd field set to a file
- * descriptor open in the current address space.  This file descriptor
- * can then be passed to another process.  The corresponding opaque handle can
- * be retrieved via ION_IOC_IMPORT.
- *
- * #define ION_IOC_SHARE		_IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
- * This will come from the older kernels, so don't redefine here
- */
-
-/**
- * DOC: ION_IOC_HEAP_QUERY - information about available heaps
- *
- * Takes an ion_heap_query structure and populates information about
- * available Ion heaps.
- */
-#define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
-
-#endif /* _UAPI_LINUX_ION_NEW_H */
diff --git a/libion/ion_test.c b/libion/ion_test.c
deleted file mode 100644
index f3874ae..0000000
--- a/libion/ion_test.c
+++ /dev/null
@@ -1,289 +0,0 @@
-/*
- *   Copyright 2013 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <ion/ion.h>
-#include <linux/ion.h>
-
-size_t len = 1024*1024, align = 0;
-int prot = PROT_READ | PROT_WRITE;
-int map_flags = MAP_SHARED;
-int alloc_flags = 0;
-int heap_mask = 1;
-int test = -1;
-size_t stride;
-
-int _ion_alloc_test(int *fd, ion_user_handle_t *handle)
-{
-    int ret;
-
-    *fd = ion_open();
-    if (*fd < 0)
-        return *fd;
-
-    ret = ion_alloc(*fd, len, align, heap_mask, alloc_flags, handle);
-
-    if (ret)
-        printf("%s failed: %s\n", __func__, strerror(ret));
-    return ret;
-}
-
-void ion_alloc_test()
-{
-    int fd, ret;
-    ion_user_handle_t handle;
-
-    if(_ion_alloc_test(&fd, &handle))
-        return;
-
-    ret = ion_free(fd, handle);
-    if (ret) {
-        printf("%s failed: %s %d\n", __func__, strerror(ret), handle);
-        return;
-    }
-    ion_close(fd);
-    printf("ion alloc test: passed\n");
-}
-
-void ion_map_test()
-{
-    int fd, map_fd, ret;
-    size_t i;
-    ion_user_handle_t handle;
-    unsigned char *ptr;
-
-    if(_ion_alloc_test(&fd, &handle))
-        return;
-
-    ret = ion_map(fd, handle, len, prot, map_flags, 0, &ptr, &map_fd);
-    if (ret)
-        return;
-
-    for (i = 0; i < len; i++) {
-        ptr[i] = (unsigned char)i;
-    }
-    for (i = 0; i < len; i++)
-        if (ptr[i] != (unsigned char)i)
-            printf("%s failed wrote %zu read %d from mapped "
-                   "memory\n", __func__, i, ptr[i]);
-    /* clean up properly */
-    ret = ion_free(fd, handle);
-    ion_close(fd);
-    munmap(ptr, len);
-    close(map_fd);
-
-    _ion_alloc_test(&fd, &handle);
-    close(fd);
-
-#if 0
-    munmap(ptr, len);
-    close(map_fd);
-    ion_close(fd);
-
-    _ion_alloc_test(len, align, flags, &fd, &handle);
-    close(map_fd);
-    ret = ion_map(fd, handle, len, prot, flags, 0, &ptr, &map_fd);
-    /* don't clean up */
-#endif
-}
-
-void ion_share_test()
-
-{
-    ion_user_handle_t handle;
-    int sd[2];
-    int num_fd = 1;
-    struct iovec count_vec = {
-        .iov_base = &num_fd,
-        .iov_len = sizeof num_fd,
-    };
-    char buf[CMSG_SPACE(sizeof(int))];
-    socketpair(AF_UNIX, SOCK_STREAM, 0, sd);
-    if (fork()) {
-        struct msghdr msg = {
-            .msg_control = buf,
-            .msg_controllen = sizeof buf,
-            .msg_iov = &count_vec,
-            .msg_iovlen = 1,
-        };
-
-        struct cmsghdr *cmsg;
-        int fd, share_fd, ret;
-        char *ptr;
-        /* parent */
-        if(_ion_alloc_test(&fd, &handle))
-            return;
-        ret = ion_share(fd, handle, &share_fd);
-        if (ret)
-            printf("share failed %s\n", strerror(errno));
-        ptr = mmap(NULL, len, prot, map_flags, share_fd, 0);
-        if (ptr == MAP_FAILED) {
-            return;
-        }
-        strcpy(ptr, "master");
-        cmsg = CMSG_FIRSTHDR(&msg);
-        cmsg->cmsg_level = SOL_SOCKET;
-        cmsg->cmsg_type = SCM_RIGHTS;
-        cmsg->cmsg_len = CMSG_LEN(sizeof(int));
-        *(int *)CMSG_DATA(cmsg) = share_fd;
-        /* send the fd */
-        printf("master? [%10s] should be [master]\n", ptr);
-        printf("master sending msg 1\n");
-        sendmsg(sd[0], &msg, 0);
-        if (recvmsg(sd[0], &msg, 0) < 0)
-            perror("master recv msg 2");
-        printf("master? [%10s] should be [child]\n", ptr);
-
-        /* send ping */
-        sendmsg(sd[0], &msg, 0);
-        printf("master->master? [%10s]\n", ptr);
-        if (recvmsg(sd[0], &msg, 0) < 0)
-            perror("master recv 1");
-        close(fd);
-        _exit(0);
-    } else {
-        struct cmsghdr *cmsg;
-        char* ptr;
-        int fd, recv_fd;
-        char* child_buf[100];
-        /* child */
-        struct iovec count_vec = {
-            .iov_base = child_buf,
-            .iov_len = sizeof child_buf,
-        };
-
-        struct msghdr child_msg = {
-            .msg_control = buf,
-            .msg_controllen = sizeof buf,
-            .msg_iov = &count_vec,
-            .msg_iovlen = 1,
-        };
-
-        if (recvmsg(sd[1], &child_msg, 0) < 0)
-            perror("child recv msg 1");
-        cmsg = CMSG_FIRSTHDR(&child_msg);
-        if (cmsg == NULL) {
-            printf("no cmsg rcvd in child");
-            return;
-        }
-        recv_fd = *(int*)CMSG_DATA(cmsg);
-        if (recv_fd < 0) {
-            printf("could not get recv_fd from socket");
-            return;
-        }
-        printf("child %d\n", recv_fd);
-        fd = ion_open();
-        ptr = mmap(NULL, len, prot, map_flags, recv_fd, 0);
-        if (ptr == MAP_FAILED) {
-            return;
-        }
-        printf("child? [%10s] should be [master]\n", ptr);
-        strcpy(ptr, "child");
-        printf("child sending msg 2\n");
-        sendmsg(sd[1], &child_msg, 0);
-        close(fd);
-    }
-}
-
-int main(int argc, char* argv[]) {
-    int c;
-    enum tests {
-        ALLOC_TEST = 0, MAP_TEST, SHARE_TEST,
-    };
-
-    while (1) {
-        static struct option opts[] = {
-            {"alloc", no_argument, 0, 'a'},
-            {"alloc_flags", required_argument, 0, 'f'},
-            {"heap_mask", required_argument, 0, 'h'},
-            {"map", no_argument, 0, 'm'},
-            {"share", no_argument, 0, 's'},
-            {"len", required_argument, 0, 'l'},
-            {"align", required_argument, 0, 'g'},
-            {"map_flags", required_argument, 0, 'z'},
-            {"prot", required_argument, 0, 'p'},
-        };
-        int i = 0;
-        c = getopt_long(argc, argv, "af:h:l:mr:st", opts, &i);
-        if (c == -1)
-            break;
-
-        switch (c) {
-        case 'l':
-            len = atol(optarg);
-            break;
-        case 'g':
-            align = atol(optarg);
-            break;
-        case 'z':
-            map_flags = 0;
-            map_flags |= strstr(optarg, "PROT_EXEC") ? PROT_EXEC : 0;
-            map_flags |= strstr(optarg, "PROT_READ") ? PROT_READ: 0;
-            map_flags |= strstr(optarg, "PROT_WRITE") ? PROT_WRITE: 0;
-            map_flags |= strstr(optarg, "PROT_NONE") ? PROT_NONE: 0;
-            break;
-        case 'p':
-            prot = 0;
-            prot |= strstr(optarg, "MAP_PRIVATE") ? MAP_PRIVATE : 0;
-            prot |= strstr(optarg, "MAP_SHARED") ? MAP_SHARED : 0;
-            break;
-        case 'f':
-            alloc_flags = atol(optarg);
-            break;
-        case 'h':
-            heap_mask = atol(optarg);
-            break;
-        case 'a':
-            test = ALLOC_TEST;
-            break;
-        case 'm':
-            test = MAP_TEST;
-            break;
-        case 's':
-            test = SHARE_TEST;
-            break;
-        }
-    }
-    printf("test %d, len %zu, align %zu, map_flags %d, prot %d, heap_mask %d,"
-           " alloc_flags %d\n", test, len, align, map_flags, prot,
-           heap_mask, alloc_flags);
-    switch (test) {
-        case ALLOC_TEST:
-            ion_alloc_test();
-            break;
-        case MAP_TEST:
-            ion_map_test();
-            break;
-        case SHARE_TEST:
-            ion_share_test();
-            break;
-        default:
-            printf("must specify a test (alloc, map, share)\n");
-    }
-    return 0;
-}
diff --git a/libion/kernel-headers/linux/ion.h b/libion/kernel-headers/linux/ion.h
deleted file mode 100644
index 3c28080..0000000
--- a/libion/kernel-headers/linux/ion.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/****************************************************************************
- ****************************************************************************
- ***
- ***   This header was automatically generated from a Linux kernel header
- ***   of the same name, to make information necessary for userspace to
- ***   call into the kernel available to libc.  It contains only constants,
- ***   structures, and macros generated from the original header, and thus,
- ***   contains no copyrightable information.
- ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
- ****************************************************************************
- ****************************************************************************/
-#ifndef _UAPI_LINUX_ION_H
-#define _UAPI_LINUX_ION_H
-#include <linux/ioctl.h>
-#include <linux/types.h>
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-typedef int ion_user_handle_t;
-enum ion_heap_type {
- ION_HEAP_TYPE_SYSTEM,
- ION_HEAP_TYPE_SYSTEM_CONTIG,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- ION_HEAP_TYPE_CARVEOUT,
- ION_HEAP_TYPE_CHUNK,
- ION_HEAP_TYPE_DMA,
- ION_HEAP_TYPE_CUSTOM,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- ION_NUM_HEAPS = 16,
-};
-#define ION_HEAP_SYSTEM_MASK (1 << ION_HEAP_TYPE_SYSTEM)
-#define ION_HEAP_SYSTEM_CONTIG_MASK (1 << ION_HEAP_TYPE_SYSTEM_CONTIG)
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define ION_HEAP_CARVEOUT_MASK (1 << ION_HEAP_TYPE_CARVEOUT)
-#define ION_HEAP_TYPE_DMA_MASK (1 << ION_HEAP_TYPE_DMA)
-#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
-#define ION_FLAG_CACHED 1
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define ION_FLAG_CACHED_NEEDS_SYNC 2
-struct ion_allocation_data {
- size_t len;
- size_t align;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned int heap_id_mask;
- unsigned int flags;
- ion_user_handle_t handle;
-};
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-struct ion_fd_data {
- ion_user_handle_t handle;
- int fd;
-};
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-struct ion_handle_data {
- ion_user_handle_t handle;
-};
-struct ion_custom_data {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned int cmd;
- unsigned long arg;
-};
-#define ION_IOC_MAGIC 'I'
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0,   struct ion_allocation_data)
-#define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
-#define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
-#define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
-#define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
-#define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
-#endif
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libion/kernel-headers/linux/ion_test.h b/libion/kernel-headers/linux/ion_test.h
deleted file mode 100644
index 6f3e2a7..0000000
--- a/libion/kernel-headers/linux/ion_test.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/****************************************************************************
- ****************************************************************************
- ***
- ***   This header was automatically generated from a Linux kernel header
- ***   of the same name, to make information necessary for userspace to
- ***   call into the kernel available to libc.  It contains only constants,
- ***   structures, and macros generated from the original header, and thus,
- ***   contains no copyrightable information.
- ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
- ****************************************************************************
- ****************************************************************************/
-#ifndef _UAPI_LINUX_ION_TEST_H
-#define _UAPI_LINUX_ION_TEST_H
-#include <linux/ioctl.h>
-#include <linux/types.h>
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-struct ion_test_rw_data {
- __u64 ptr;
- __u64 offset;
- __u64 size;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- int write;
- int __padding;
-};
-#define ION_IOC_MAGIC 'I'
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define ION_IOC_TEST_SET_FD   _IO(ION_IOC_MAGIC, 0xf0)
-#define ION_IOC_TEST_DMA_MAPPING   _IOW(ION_IOC_MAGIC, 0xf1, struct ion_test_rw_data)
-#define ION_IOC_TEST_KERNEL_MAPPING   _IOW(ION_IOC_MAGIC, 0xf2, struct ion_test_rw_data)
-#endif
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libion/original-kernel-headers/linux/ion.h b/libion/original-kernel-headers/linux/ion.h
deleted file mode 100644
index f09e7c1..0000000
--- a/libion/original-kernel-headers/linux/ion.h
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * drivers/staging/android/uapi/ion.h
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _UAPI_LINUX_ION_H
-#define _UAPI_LINUX_ION_H
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-typedef int ion_user_handle_t;
-
-/**
- * enum ion_heap_types - list of all possible types of heaps
- * @ION_HEAP_TYPE_SYSTEM:	 memory allocated via vmalloc
- * @ION_HEAP_TYPE_SYSTEM_CONTIG: memory allocated via kmalloc
- * @ION_HEAP_TYPE_CARVEOUT:	 memory allocated from a prereserved
- * 				 carveout heap, allocations are physically
- * 				 contiguous
- * @ION_HEAP_TYPE_DMA:		 memory allocated via DMA API
- * @ION_NUM_HEAPS:		 helper for iterating over heaps, a bit mask
- * 				 is used to identify the heaps, so only 32
- * 				 total heap types are supported
- */
-enum ion_heap_type {
-	ION_HEAP_TYPE_SYSTEM,
-	ION_HEAP_TYPE_SYSTEM_CONTIG,
-	ION_HEAP_TYPE_CARVEOUT,
-	ION_HEAP_TYPE_CHUNK,
-	ION_HEAP_TYPE_DMA,
-	ION_HEAP_TYPE_CUSTOM, /* must be last so device specific heaps always
-				 are at the end of this enum */
-	ION_NUM_HEAPS = 16,
-};
-
-#define ION_HEAP_SYSTEM_MASK		(1 << ION_HEAP_TYPE_SYSTEM)
-#define ION_HEAP_SYSTEM_CONTIG_MASK	(1 << ION_HEAP_TYPE_SYSTEM_CONTIG)
-#define ION_HEAP_CARVEOUT_MASK		(1 << ION_HEAP_TYPE_CARVEOUT)
-#define ION_HEAP_TYPE_DMA_MASK		(1 << ION_HEAP_TYPE_DMA)
-
-#define ION_NUM_HEAP_IDS		sizeof(unsigned int) * 8
-
-/**
- * allocation flags - the lower 16 bits are used by core ion, the upper 16
- * bits are reserved for use by the heaps themselves.
- */
-#define ION_FLAG_CACHED 1		/* mappings of this buffer should be
-					   cached, ion will do cache
-					   maintenance when the buffer is
-					   mapped for dma */
-#define ION_FLAG_CACHED_NEEDS_SYNC 2	/* mappings of this buffer will created
-					   at mmap time, if this is set
-					   caches must be managed manually */
-
-/**
- * DOC: Ion Userspace API
- *
- * create a client by opening /dev/ion
- * most operations handled via following ioctls
- *
- */
-
-/**
- * struct ion_allocation_data - metadata passed from userspace for allocations
- * @len:		size of the allocation
- * @align:		required alignment of the allocation
- * @heap_id_mask:	mask of heap ids to allocate from
- * @flags:		flags passed to heap
- * @handle:		pointer that will be populated with a cookie to use to 
- *			refer to this allocation
- *
- * Provided by userspace as an argument to the ioctl
- */
-struct ion_allocation_data {
-	size_t len;
-	size_t align;
-	unsigned int heap_id_mask;
-	unsigned int flags;
-	ion_user_handle_t handle;
-};
-
-/**
- * struct ion_fd_data - metadata passed to/from userspace for a handle/fd pair
- * @handle:	a handle
- * @fd:		a file descriptor representing that handle
- *
- * For ION_IOC_SHARE or ION_IOC_MAP userspace populates the handle field with
- * the handle returned from ion alloc, and the kernel returns the file
- * descriptor to share or map in the fd field.  For ION_IOC_IMPORT, userspace
- * provides the file descriptor and the kernel returns the handle.
- */
-struct ion_fd_data {
-	ion_user_handle_t handle;
-	int fd;
-};
-
-/**
- * struct ion_handle_data - a handle passed to/from the kernel
- * @handle:	a handle
- */
-struct ion_handle_data {
-	ion_user_handle_t handle;
-};
-
-/**
- * struct ion_custom_data - metadata passed to/from userspace for a custom ioctl
- * @cmd:	the custom ioctl function to call
- * @arg:	additional data to pass to the custom ioctl, typically a user
- *		pointer to a predefined structure
- *
- * This works just like the regular cmd and arg fields of an ioctl.
- */
-struct ion_custom_data {
-	unsigned int cmd;
-	unsigned long arg;
-};
-
-#define ION_IOC_MAGIC		'I'
-
-/**
- * DOC: ION_IOC_ALLOC - allocate memory
- *
- * Takes an ion_allocation_data struct and returns it with the handle field
- * populated with the opaque handle for the allocation.
- */
-#define ION_IOC_ALLOC		_IOWR(ION_IOC_MAGIC, 0, \
-				      struct ion_allocation_data)
-
-/**
- * DOC: ION_IOC_FREE - free memory
- *
- * Takes an ion_handle_data struct and frees the handle.
- */
-#define ION_IOC_FREE		_IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
-
-/**
- * DOC: ION_IOC_MAP - get a file descriptor to mmap
- *
- * Takes an ion_fd_data struct with the handle field populated with a valid
- * opaque handle.  Returns the struct with the fd field set to a file
- * descriptor open in the current address space.  This file descriptor
- * can then be used as an argument to mmap.
- */
-#define ION_IOC_MAP		_IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
-
-/**
- * DOC: ION_IOC_SHARE - creates a file descriptor to use to share an allocation
- *
- * Takes an ion_fd_data struct with the handle field populated with a valid
- * opaque handle.  Returns the struct with the fd field set to a file
- * descriptor open in the current address space.  This file descriptor
- * can then be passed to another process.  The corresponding opaque handle can
- * be retrieved via ION_IOC_IMPORT.
- */
-#define ION_IOC_SHARE		_IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
-
-/**
- * DOC: ION_IOC_IMPORT - imports a shared file descriptor
- *
- * Takes an ion_fd_data struct with the fd field populated with a valid file
- * descriptor obtained from ION_IOC_SHARE and returns the struct with the handle
- * filed set to the corresponding opaque handle.
- */
-#define ION_IOC_IMPORT		_IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
-
-/**
- * DOC: ION_IOC_SYNC - syncs a shared file descriptors to memory
- *
- * Deprecated in favor of using the dma_buf api's correctly (syncing
- * will happend automatically when the buffer is mapped to a device).
- * If necessary should be used after touching a cached buffer from the cpu,
- * this will make the buffer in memory coherent.
- */
-#define ION_IOC_SYNC		_IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
-
-/**
- * DOC: ION_IOC_CUSTOM - call architecture specific ion ioctl
- *
- * Takes the argument of the architecture specific ioctl to call and
- * passes appropriate userdata for that ioctl
- */
-#define ION_IOC_CUSTOM		_IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
-
-#endif /* _UAPI_LINUX_ION_H */
diff --git a/libion/original-kernel-headers/linux/ion_test.h b/libion/original-kernel-headers/linux/ion_test.h
deleted file mode 100644
index ffef06f..0000000
--- a/libion/original-kernel-headers/linux/ion_test.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * drivers/staging/android/uapi/ion.h
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _UAPI_LINUX_ION_TEST_H
-#define _UAPI_LINUX_ION_TEST_H
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-/**
- * struct ion_test_rw_data - metadata passed to the kernel to read handle
- * @ptr:	a pointer to an area at least as large as size
- * @offset:	offset into the ion buffer to start reading
- * @size:	size to read or write
- * @write:	1 to write, 0 to read
- */
-struct ion_test_rw_data {
-	__u64 ptr;
-	__u64 offset;
-	__u64 size;
-	int write;
-	int __padding;
-};
-
-#define ION_IOC_MAGIC		'I'
-
-/**
- * DOC: ION_IOC_TEST_SET_DMA_BUF - attach a dma buf to the test driver
- *
- * Attaches a dma buf fd to the test driver.  Passing a second fd or -1 will
- * release the first fd.
- */
-#define ION_IOC_TEST_SET_FD \
-			_IO(ION_IOC_MAGIC, 0xf0)
-
-/**
- * DOC: ION_IOC_TEST_DMA_MAPPING - read or write memory from a handle as DMA
- *
- * Reads or writes the memory from a handle using an uncached mapping.  Can be
- * used by unit tests to emulate a DMA engine as close as possible.  Only
- * expected to be used for debugging and testing, may not always be available.
- */
-#define ION_IOC_TEST_DMA_MAPPING \
-			_IOW(ION_IOC_MAGIC, 0xf1, struct ion_test_rw_data)
-
-/**
- * DOC: ION_IOC_TEST_KERNEL_MAPPING - read or write memory from a handle
- *
- * Reads or writes the memory from a handle using a kernel mapping.  Can be
- * used by unit tests to test heap map_kernel functions.  Only expected to be
- * used for debugging and testing, may not always be available.
- */
-#define ION_IOC_TEST_KERNEL_MAPPING \
-			_IOW(ION_IOC_MAGIC, 0xf2, struct ion_test_rw_data)
-
-
-#endif /* _UAPI_LINUX_ION_H */
diff --git a/libion/tests/Android.bp b/libion/tests/Android.bp
deleted file mode 100644
index b3fcb3b..0000000
--- a/libion/tests/Android.bp
+++ /dev/null
@@ -1,35 +0,0 @@
-//
-// Copyright (C) 2013 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_test {
-    name: "ion-unit-tests",
-    cflags: [
-        "-g",
-        "-Wall",
-        "-Werror",
-        "-Wno-missing-field-initializers",
-    ],
-    shared_libs: ["libion"],
-    srcs: [
-        "ion_test_fixture.cpp",
-        "allocate_test.cpp",
-        "formerly_valid_handle_test.cpp",
-        "invalid_values_test.cpp",
-        "map_test.cpp",
-        "device_test.cpp",
-        "exit_test.cpp",
-    ],
-}
diff --git a/libion/tests/allocate_test.cpp b/libion/tests/allocate_test.cpp
deleted file mode 100644
index 3c4524e..0000000
--- a/libion/tests/allocate_test.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <memory>
-#include <sys/mman.h>
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-#include "ion_test_fixture.h"
-
-class Allocate : public IonAllHeapsTest {
-};
-
-TEST_F(Allocate, Allocate)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            ion_user_handle_t handle = 0;
-            ASSERT_EQ(0, ion_alloc(m_ionFd, size, 0, heapMask, 0, &handle));
-            ASSERT_TRUE(handle != 0);
-            ASSERT_EQ(0, ion_free(m_ionFd, handle));
-        }
-    }
-}
-
-TEST_F(Allocate, AllocateCached)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            ion_user_handle_t handle = 0;
-            ASSERT_EQ(0, ion_alloc(m_ionFd, size, 0, heapMask, ION_FLAG_CACHED, &handle));
-            ASSERT_TRUE(handle != 0);
-            ASSERT_EQ(0, ion_free(m_ionFd, handle));
-        }
-    }
-}
-
-TEST_F(Allocate, AllocateCachedNeedsSync)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            ion_user_handle_t handle = 0;
-            ASSERT_EQ(0, ion_alloc(m_ionFd, size, 0, heapMask, ION_FLAG_CACHED_NEEDS_SYNC, &handle));
-            ASSERT_TRUE(handle != 0);
-            ASSERT_EQ(0, ion_free(m_ionFd, handle));
-        }
-    }
-}
-
-TEST_F(Allocate, RepeatedAllocate)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            ion_user_handle_t handle = 0;
-
-            for (unsigned int i = 0; i < 1024; i++) {
-                SCOPED_TRACE(::testing::Message() << "iteration " << i);
-                ASSERT_EQ(0, ion_alloc(m_ionFd, size, 0, heapMask, 0, &handle));
-                ASSERT_TRUE(handle != 0);
-                ASSERT_EQ(0, ion_free(m_ionFd, handle));
-            }
-        }
-    }
-}
-
-TEST_F(Allocate, Zeroed)
-{
-    auto zeroes_ptr = std::make_unique<char[]>(4096);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int fds[16];
-        for (unsigned int i = 0; i < 16; i++) {
-            int map_fd = -1;
-
-            ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, 0, &map_fd));
-            ASSERT_GE(map_fd, 0);
-
-            void *ptr = NULL;
-            ptr = mmap(NULL, 4096, PROT_WRITE, MAP_SHARED, map_fd, 0);
-            ASSERT_TRUE(ptr != NULL);
-
-            memset(ptr, 0xaa, 4096);
-
-            ASSERT_EQ(0, munmap(ptr, 4096));
-            fds[i] = map_fd;
-        }
-
-        for (unsigned int i = 0; i < 16; i++) {
-            ASSERT_EQ(0, close(fds[i]));
-        }
-
-        int newIonFd = ion_open();
-        int map_fd = -1;
-
-        ASSERT_EQ(0, ion_alloc_fd(newIonFd, 4096, 0, heapMask, 0, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr = NULL;
-        ptr = mmap(NULL, 4096, PROT_READ, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        ASSERT_EQ(0, memcmp(ptr, zeroes_ptr.get(), 4096));
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Allocate, Large)
-{
-    for (unsigned int heapMask : m_allHeaps) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        ion_user_handle_t handle = 0;
-        ASSERT_EQ(-ENOMEM, ion_alloc(m_ionFd, 3UL*1024*1024*1024, 0, heapMask, 0, &handle));
-    }
-}
diff --git a/libion/tests/device_test.cpp b/libion/tests/device_test.cpp
deleted file mode 100644
index eb3f7b6..0000000
--- a/libion/tests/device_test.cpp
+++ /dev/null
@@ -1,546 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <fcntl.h>
-#include <memory>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <linux/ion_test.h>
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-
-#include "ion_test_fixture.h"
-
-#define ALIGN(x,y) (((x) + ((y) - 1)) & ~((y) - 1))
-
-class Device : public IonAllHeapsTest {
- public:
-    virtual void SetUp();
-    virtual void TearDown();
-    int m_deviceFd;
-    void readDMA(int fd, void *buf, size_t size);
-    void writeDMA(int fd, void *buf, size_t size);
-    void readKernel(int fd, void *buf, size_t size);
-    void writeKernel(int fd, void *buf, size_t size);
-    void blowCache();
-    void dirtyCache(void *ptr, size_t size);
-};
-
-void Device::SetUp()
-{
-    IonAllHeapsTest::SetUp();
-    m_deviceFd = open("/dev/ion-test", O_RDONLY);
-    ASSERT_GE(m_deviceFd, 0);
-}
-
-void Device::TearDown()
-{
-    ASSERT_EQ(0, close(m_deviceFd));
-    IonAllHeapsTest::TearDown();
-}
-
-void Device::readDMA(int fd, void *buf, size_t size)
-{
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, fd));
-    struct ion_test_rw_data ion_test_rw_data = {
-            .ptr = (uint64_t)buf,
-            .offset = 0,
-            .size = size,
-            .write = 0,
-    };
-
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_DMA_MAPPING, &ion_test_rw_data));
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, -1));
-}
-
-void Device::writeDMA(int fd, void *buf, size_t size)
-{
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, fd));
-    struct ion_test_rw_data ion_test_rw_data = {
-            .ptr = (uint64_t)buf,
-            .offset = 0,
-            .size = size,
-            .write = 1,
-    };
-
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_DMA_MAPPING, &ion_test_rw_data));
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, -1));
-}
-
-void Device::readKernel(int fd, void *buf, size_t size)
-{
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, fd));
-    struct ion_test_rw_data ion_test_rw_data = {
-            .ptr = (uint64_t)buf,
-            .offset = 0,
-            .size = size,
-            .write = 0,
-    };
-
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_KERNEL_MAPPING, &ion_test_rw_data));
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, -1));
-}
-
-void Device::writeKernel(int fd, void *buf, size_t size)
-{
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, fd));
-    struct ion_test_rw_data ion_test_rw_data = {
-            .ptr = (uint64_t)buf,
-            .offset = 0,
-            .size = size,
-            .write = 1,
-    };
-
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_KERNEL_MAPPING, &ion_test_rw_data));
-    ASSERT_EQ(0, ioctl(m_deviceFd, ION_IOC_TEST_SET_FD, -1));
-}
-
-void Device::blowCache()
-{
-    const size_t bigger_than_cache = 8*1024*1024;
-    void *buf1 = malloc(bigger_than_cache);
-    void *buf2 = malloc(bigger_than_cache);
-    memset(buf1, 0xaa, bigger_than_cache);
-    memcpy(buf2, buf1, bigger_than_cache);
-    free(buf1);
-    free(buf2);
-}
-
-void Device::dirtyCache(void *ptr, size_t size)
-{
-    /* try to dirty cache lines */
-    for (size_t i = size-1; i > 0; i--) {
-        ((volatile char *)ptr)[i];
-        ((char *)ptr)[i] = i;
-    }
-}
-
-TEST_F(Device, KernelReadCached)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        for (int i = 0; i < 4096; i++)
-            ((char *)ptr)[i] = i;
-
-        ((char*)buf)[4096] = 0x12;
-        readKernel(map_fd, buf, 4096);
-        ASSERT_EQ(((char*)buf)[4096], 0x12);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)buf)[i]);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, KernelWriteCached)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (int i = 0; i < 4096; i++)
-        ((char *)buf)[i] = i;
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        writeKernel(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)ptr)[i]) << i;
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, DMAReadCached)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        for (int i = 0; i < 4096; i++)
-            ((char *)ptr)[i] = i;
-
-        readDMA(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)buf)[i]);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, DMAWriteCached)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (int i = 0; i < 4096; i++)
-        ((char *)buf)[i] = i;
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        writeDMA(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)ptr)[i]) << i;
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, KernelReadCachedNeedsSync)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        for (int i = 0; i < 4096; i++)
-            ((char *)ptr)[i] = i;
-
-        ((char*)buf)[4096] = 0x12;
-        readKernel(map_fd, buf, 4096);
-        ASSERT_EQ(((char*)buf)[4096], 0x12);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)buf)[i]);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, KernelWriteCachedNeedsSync)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (int i = 0; i < 4096; i++)
-        ((char *)buf)[i] = i;
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        writeKernel(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)ptr)[i]) << i;
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, DMAReadCachedNeedsSync)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        for (int i = 0; i < 4096; i++)
-            ((char *)ptr)[i] = i;
-
-        ion_sync_fd(m_ionFd, map_fd);
-
-        readDMA(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)buf)[i]);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, DMAWriteCachedNeedsSync)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (int i = 0; i < 4096; i++)
-        ((char *)buf)[i] = i;
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        writeDMA(map_fd, buf, 4096);
-
-        ion_sync_fd(m_ionFd, map_fd);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)ptr)[i]) << i;
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-TEST_F(Device, KernelRead)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = 0;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        for (int i = 0; i < 4096; i++)
-            ((char *)ptr)[i] = i;
-
-        ((char*)buf)[4096] = 0x12;
-        readKernel(map_fd, buf, 4096);
-        ASSERT_EQ(((char*)buf)[4096], 0x12);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)buf)[i]);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, KernelWrite)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (int i = 0; i < 4096; i++)
-        ((char *)buf)[i] = i;
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = 0;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        writeKernel(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)ptr)[i]) << i;
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, DMARead)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = 0;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        for (int i = 0; i < 4096; i++)
-            ((char *)ptr)[i] = i;
-
-        readDMA(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)buf)[i]);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, DMAWrite)
-{
-    auto alloc_ptr = std::make_unique<char[]>(8192 + 1024);
-    void *buf = (void *)(ALIGN((unsigned long)alloc_ptr.get(), 4096) + 1024);
-
-    for (int i = 0; i < 4096; i++)
-        ((char *)buf)[i] = i;
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = 0;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        writeDMA(map_fd, buf, 4096);
-
-        for (int i = 0; i < 4096; i++)
-            ASSERT_EQ((char)i, ((char *)ptr)[i]) << i;
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Device, IsCached)
-{
-    auto buf_ptr = std::make_unique<char[]>(4096);
-    void *buf = buf_ptr.get();
-
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-        unsigned int flags = ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, flags, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        void *ptr;
-        ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        dirtyCache(ptr, 4096);
-
-        readDMA(map_fd, buf, 4096);
-
-        bool same = true;
-        for (int i = 4096-16; i >= 0; i -= 16)
-            if (((char *)buf)[i] != i)
-                same = false;
-        ASSERT_FALSE(same);
-
-        ASSERT_EQ(0, munmap(ptr, 4096));
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
diff --git a/libion/tests/exit_test.cpp b/libion/tests/exit_test.cpp
deleted file mode 100644
index cdd3e27..0000000
--- a/libion/tests/exit_test.cpp
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/mman.h>
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-
-#include "ion_test_fixture.h"
-
-class Exit : public IonAllHeapsTest {
-};
-
-TEST_F(Exit, WithAlloc)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                ion_user_handle_t handle = 0;
-
-                ASSERT_EQ(0, ion_alloc(m_ionFd, size, 0, heapMask, 0, &handle));
-                ASSERT_TRUE(handle != 0);
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-}
-
-TEST_F(Exit, WithAllocFd)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int handle_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, 0, &handle_fd));
-                ASSERT_NE(-1, handle_fd);
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-}
-
-TEST_F(Exit, WithRepeatedAllocFd)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            for (unsigned int i = 0; i < 1024; i++) {
-                SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-                SCOPED_TRACE(::testing::Message() << "size " << size);
-                ASSERT_EXIT({
-                    int handle_fd = -1;
-
-                    ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, 0, &handle_fd));
-                    ASSERT_NE(-1, handle_fd);
-                    exit(0);
-                }, ::testing::ExitedWithCode(0), "")
-                        << "failed on heap " << heapMask
-                        << " and size " << size
-                        << " on iteration " << i;
-            }
-        }
-    }
-}
-
-
-TEST_F(Exit, WithMapping)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int map_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, 0, &map_fd));
-                ASSERT_GE(map_fd, 0);
-
-                void *ptr;
-                ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-                ASSERT_TRUE(ptr != NULL);
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-
-}
-
-TEST_F(Exit, WithPartialMapping)
-{
-    static const size_t allocationSizes[] = {64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int map_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, 0, &map_fd));
-                ASSERT_GE(map_fd, 0);
-
-                void *ptr;
-                ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-                ASSERT_TRUE(ptr != NULL);
-
-                ASSERT_EQ(0, munmap(ptr, size / 2));
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-}
-
-TEST_F(Exit, WithMappingCached)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int map_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, ION_FLAG_CACHED, &map_fd));
-                ASSERT_GE(map_fd, 0);
-
-                void *ptr;
-                ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-                ASSERT_TRUE(ptr != NULL);
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-
-}
-
-TEST_F(Exit, WithPartialMappingCached)
-{
-    static const size_t allocationSizes[] = {64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int map_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, ION_FLAG_CACHED, &map_fd));
-                ASSERT_GE(map_fd, 0);
-
-                void *ptr;
-                ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-                ASSERT_TRUE(ptr != NULL);
-
-                ASSERT_EQ(0, munmap(ptr, size / 2));
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-}
-
-TEST_F(Exit, WithMappingNeedsSync)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int map_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC, &map_fd));
-                ASSERT_GE(map_fd, 0);
-
-                void *ptr;
-                ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-                ASSERT_TRUE(ptr != NULL);
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-
-}
-
-TEST_F(Exit, WithPartialMappingNeedsSync)
-{
-    static const size_t allocationSizes[] = {64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            EXPECT_EXIT({
-                int map_fd = -1;
-
-                ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC, &map_fd));
-                ASSERT_GE(map_fd, 0);
-
-                void *ptr;
-                ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-                ASSERT_TRUE(ptr != NULL);
-
-                ASSERT_EQ(0, munmap(ptr, size / 2));
-                exit(0);
-            }, ::testing::ExitedWithCode(0), "");
-        }
-    }
-}
diff --git a/libion/tests/formerly_valid_handle_test.cpp b/libion/tests/formerly_valid_handle_test.cpp
deleted file mode 100644
index 01ab8f3..0000000
--- a/libion/tests/formerly_valid_handle_test.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/mman.h>
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-
-#include "ion_test_fixture.h"
-
-class FormerlyValidHandle : public IonTest {
- public:
-    virtual void SetUp();
-    virtual void TearDown();
-    ion_user_handle_t m_handle;
-};
-
-void FormerlyValidHandle::SetUp()
-{
-    IonTest::SetUp();
-    ASSERT_EQ(0, ion_alloc(m_ionFd, 4096, 0, 1/* ion_env->m_firstHeap */, 0, &m_handle));
-    ASSERT_TRUE(m_handle != 0);
-    ASSERT_EQ(0, ion_free(m_ionFd, m_handle));
-}
-
-void FormerlyValidHandle::TearDown()
-{
-    m_handle = 0;
-}
-
-TEST_F(FormerlyValidHandle, free)
-{
-	ASSERT_EQ(-EINVAL, ion_free(m_ionFd, m_handle));
-}
-
-TEST_F(FormerlyValidHandle, map)
-{
-    int map_fd;
-    unsigned char *ptr;
-
-    ASSERT_EQ(-EINVAL, ion_map(m_ionFd, m_handle, 4096, PROT_READ, 0, 0, &ptr, &map_fd));
-}
-
-TEST_F(FormerlyValidHandle, share)
-{
-    int share_fd;
-
-    ASSERT_EQ(-EINVAL, ion_share(m_ionFd, m_handle, &share_fd));
-}
diff --git a/libion/tests/invalid_values_test.cpp b/libion/tests/invalid_values_test.cpp
deleted file mode 100644
index 77fea17..0000000
--- a/libion/tests/invalid_values_test.cpp
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/mman.h>
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-
-#include "ion_test_fixture.h"
-
-class InvalidValues : public IonAllHeapsTest {
- public:
-    virtual void SetUp();
-    virtual void TearDown();
-    ion_user_handle_t m_validHandle;
-    int m_validShareFd;
-    ion_user_handle_t const m_badHandle = -1;
-};
-
-void InvalidValues::SetUp()
-{
-    IonAllHeapsTest::SetUp();
-    ASSERT_EQ(0, ion_alloc(m_ionFd, 4096, 0, m_firstHeap, 0, &m_validHandle))
-      << m_ionFd << " " << m_firstHeap;
-    ASSERT_TRUE(m_validHandle != 0);
-    ASSERT_EQ(0, ion_share(m_ionFd, m_validHandle, &m_validShareFd));
-}
-
-void InvalidValues::TearDown()
-{
-    ASSERT_EQ(0, ion_free(m_ionFd, m_validHandle));
-    ASSERT_EQ(0, close(m_validShareFd));
-    m_validHandle = 0;
-    IonAllHeapsTest::TearDown();
-}
-
-TEST_F(InvalidValues, ion_close)
-{
-    EXPECT_EQ(-EBADF, ion_close(-1));
-}
-
-TEST_F(InvalidValues, ion_alloc)
-{
-    ion_user_handle_t handle;
-    /* invalid ion_fd */
-    int ret = ion_alloc(0, 4096, 0, m_firstHeap, 0, &handle);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion_fd */
-    EXPECT_EQ(-EBADF, ion_alloc(-1, 4096, 0, m_firstHeap, 0, &handle));
-    /* no heaps */
-    EXPECT_EQ(-ENODEV, ion_alloc(m_ionFd, 4096, 0, 0, 0, &handle));
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        /* zero size */
-        EXPECT_EQ(-EINVAL, ion_alloc(m_ionFd, 0, 0, heapMask, 0, &handle));
-        /* too large size */
-        EXPECT_EQ(-EINVAL, ion_alloc(m_ionFd, -1, 0, heapMask, 0, &handle));
-        /* bad alignment */
-        EXPECT_EQ(-EINVAL, ion_alloc(m_ionFd, 4096, -1, heapMask, 0, &handle));
-        /* NULL handle */
-        EXPECT_EQ(-EINVAL, ion_alloc(m_ionFd, 4096, 0, heapMask, 0, NULL));
-    }
-}
-
-TEST_F(InvalidValues, ion_alloc_fd)
-{
-    int fd;
-    /* invalid ion_fd */
-    int ret = ion_alloc_fd(0, 4096, 0, m_firstHeap, 0, &fd);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion_fd */
-    EXPECT_EQ(-EBADF, ion_alloc_fd(-1, 4096, 0, m_firstHeap, 0, &fd));
-    /* no heaps */
-    EXPECT_EQ(-ENODEV, ion_alloc_fd(m_ionFd, 4096, 0, 0, 0, &fd));
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        /* zero size */
-        EXPECT_EQ(-EINVAL, ion_alloc_fd(m_ionFd, 0, 0, heapMask, 0, &fd));
-        /* too large size */
-        EXPECT_EQ(-EINVAL, ion_alloc_fd(m_ionFd, -1, 0, heapMask, 0, &fd));
-        /* bad alignment */
-        EXPECT_EQ(-EINVAL, ion_alloc_fd(m_ionFd, 4096, -1, heapMask, 0, &fd));
-        /* NULL handle */
-        EXPECT_EQ(-EINVAL, ion_alloc_fd(m_ionFd, 4096, 0, heapMask, 0, NULL));
-    }
-}
-
-TEST_F(InvalidValues, ion_free)
-{
-    /* invalid ion fd */
-    int ret = ion_free(0, m_validHandle);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion fd */
-    EXPECT_EQ(-EBADF, ion_free(-1, m_validHandle));
-    /* zero handle */
-    EXPECT_EQ(-EINVAL, ion_free(m_ionFd, 0));
-    /* bad handle */
-    EXPECT_EQ(-EINVAL, ion_free(m_ionFd, m_badHandle));
-}
-
-TEST_F(InvalidValues, ion_map)
-{
-    int map_fd;
-    unsigned char *ptr;
-
-    /* invalid ion fd */
-    int ret = ion_map(0, m_validHandle, 4096, PROT_READ, 0, 0, &ptr, &map_fd);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion fd */
-    EXPECT_EQ(-EBADF, ion_map(-1, m_validHandle, 4096, PROT_READ, 0, 0, &ptr, &map_fd));
-    /* zero handle */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, 0, 4096, PROT_READ, 0, 0, &ptr, &map_fd));
-    /* bad handle */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, m_badHandle, 4096, PROT_READ, 0, 0, &ptr, &map_fd));
-    /* zero length */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, m_validHandle, 0, PROT_READ, 0, 0, &ptr, &map_fd));
-    /* bad prot */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, m_validHandle, 4096, -1, 0, 0, &ptr, &map_fd));
-    /* bad offset */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, m_validHandle, 4096, PROT_READ, 0, -1, &ptr, &map_fd));
-    /* NULL ptr */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, m_validHandle, 4096, PROT_READ, 0, 0, NULL, &map_fd));
-    /* NULL map_fd */
-    EXPECT_EQ(-EINVAL, ion_map(m_ionFd, m_validHandle, 4096, PROT_READ, 0, 0, &ptr, NULL));
-}
-
-TEST_F(InvalidValues, ion_share)
-{
-    int share_fd;
-
-    /* invalid ion fd */
-    int ret = ion_share(0, m_validHandle, &share_fd);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion fd */
-    EXPECT_EQ(-EBADF, ion_share(-1, m_validHandle, &share_fd));
-    /* zero handle */
-    EXPECT_EQ(-EINVAL, ion_share(m_ionFd, 0, &share_fd));
-    /* bad handle */
-    EXPECT_EQ(-EINVAL, ion_share(m_ionFd, m_badHandle, &share_fd));
-    /* NULL share_fd */
-    EXPECT_EQ(-EINVAL, ion_share(m_ionFd, m_validHandle, NULL));
-}
-
-TEST_F(InvalidValues, ion_import)
-{
-    ion_user_handle_t handle;
-
-    /* invalid ion fd */
-    int ret = ion_import(0, m_validShareFd, &handle);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion fd */
-    EXPECT_EQ(-EBADF, ion_import(-1, m_validShareFd, &handle));
-    /* bad share_fd */
-    EXPECT_EQ(-EINVAL, ion_import(m_ionFd, 0, &handle));
-    /* invalid share_fd */
-    EXPECT_EQ(-EBADF, ion_import(m_ionFd, -1, &handle));
-    /* NULL handle */
-    EXPECT_EQ(-EINVAL, ion_import(m_ionFd, m_validShareFd, NULL));
-}
-
-TEST_F(InvalidValues, ion_sync_fd)
-{
-    /* invalid ion fd */
-    int ret = ion_sync_fd(0, m_validShareFd);
-    EXPECT_TRUE(ret == -EINVAL || ret == -ENOTTY);
-    /* invalid ion fd */
-    EXPECT_EQ(-EBADF, ion_sync_fd(-1, m_validShareFd));
-    /* bad share_fd */
-    EXPECT_EQ(-EINVAL, ion_sync_fd(m_ionFd, 0));
-    /* invalid share_fd */
-    EXPECT_EQ(-EBADF, ion_sync_fd(m_ionFd, -1));
-}
diff --git a/libion/tests/ion_test_fixture.cpp b/libion/tests/ion_test_fixture.cpp
deleted file mode 100644
index e20c730..0000000
--- a/libion/tests/ion_test_fixture.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-
-#include "ion_test_fixture.h"
-
-IonTest::IonTest() : m_ionFd(-1)
-{
-}
-
-void IonTest::SetUp() {
-    m_ionFd = ion_open();
-    ASSERT_GE(m_ionFd, 0);
-}
-
-void IonTest::TearDown() {
-    ion_close(m_ionFd);
-}
-
-IonAllHeapsTest::IonAllHeapsTest() :
-        m_firstHeap(0),
-        m_lastHeap(0),
-        m_allHeaps()
-{
-}
-
-void IonAllHeapsTest::SetUp() {
-    int fd = ion_open();
-    ASSERT_GE(fd, 0);
-
-    for (int i = 1; i != 0; i <<= 1) {
-        ion_user_handle_t handle = 0;
-        int ret;
-        ret = ion_alloc(fd, 4096, 0, i, 0, &handle);
-        if (ret == 0 && handle != 0) {
-            ion_free(fd, handle);
-            if (!m_firstHeap) {
-                m_firstHeap = i;
-            }
-            m_lastHeap = i;
-            m_allHeaps.push_back(i);
-        } else {
-            ASSERT_EQ(-ENODEV, ret);
-        }
-    }
-    ion_close(fd);
-
-    EXPECT_NE(0U, m_firstHeap);
-    EXPECT_NE(0U, m_lastHeap);
-
-    RecordProperty("Heaps", m_allHeaps.size());
-    IonTest::SetUp();
-}
-
-void IonAllHeapsTest::TearDown() {
-    IonTest::TearDown();
-}
diff --git a/libion/tests/ion_test_fixture.h b/libion/tests/ion_test_fixture.h
deleted file mode 100644
index 4098214..0000000
--- a/libion/tests/ion_test_fixture.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ION_TEST_FIXTURE_H_
-#define ION_TEST_FIXTURE_H_
-
-#include <gtest/gtest.h>
-
-using ::testing::Test;
-
-class IonTest : public virtual Test {
- public:
-    IonTest();
-	virtual ~IonTest() {};
-	virtual void SetUp();
-	virtual void TearDown();
-	int m_ionFd;
-};
-
-class IonAllHeapsTest : public IonTest {
- public:
-    IonAllHeapsTest();
-    virtual ~IonAllHeapsTest() {};
-    virtual void SetUp();
-    virtual void TearDown();
-
-    unsigned int m_firstHeap;
-    unsigned int m_lastHeap;
-
-    std::vector<unsigned int> m_allHeaps;
-};
-
-#endif /* ION_TEST_FIXTURE_H_ */
diff --git a/libion/tests/map_test.cpp b/libion/tests/map_test.cpp
deleted file mode 100644
index c006dc8..0000000
--- a/libion/tests/map_test.cpp
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/mman.h>
-
-#include <gtest/gtest.h>
-
-#include <ion/ion.h>
-
-#include "ion_test_fixture.h"
-
-class Map : public IonAllHeapsTest {
-};
-
-TEST_F(Map, MapHandle)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            ion_user_handle_t handle = 0;
-
-            ASSERT_EQ(0, ion_alloc(m_ionFd, size, 0, heapMask, 0, &handle));
-            ASSERT_TRUE(handle != 0);
-
-            int map_fd = -1;
-            unsigned char *ptr = NULL;
-            ASSERT_EQ(0, ion_map(m_ionFd, handle, size, PROT_READ | PROT_WRITE, MAP_SHARED, 0, &ptr, &map_fd));
-            ASSERT_TRUE(ptr != NULL);
-            ASSERT_GE(map_fd, 0);
-
-            ASSERT_EQ(0, close(map_fd));
-
-            ASSERT_EQ(0, ion_free(m_ionFd, handle));
-
-            memset(ptr, 0xaa, size);
-
-            ASSERT_EQ(0, munmap(ptr, size));
-        }
-    }
-}
-
-TEST_F(Map, MapFd)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            int map_fd = -1;
-
-            ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, 0, &map_fd));
-            ASSERT_GE(map_fd, 0);
-
-            void *ptr;
-            ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-            ASSERT_TRUE(ptr != NULL);
-
-            ASSERT_EQ(0, close(map_fd));
-
-            memset(ptr, 0xaa, size);
-
-            ASSERT_EQ(0, munmap(ptr, size));
-        }
-    }
-}
-
-TEST_F(Map, MapOffset)
-{
-    for (unsigned int heapMask : m_allHeaps) {
-        SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-        int map_fd = -1;
-
-        ASSERT_EQ(0, ion_alloc_fd(m_ionFd, PAGE_SIZE * 2, 0, heapMask, 0, &map_fd));
-        ASSERT_GE(map_fd, 0);
-
-        unsigned char *ptr;
-        ptr = (unsigned char *)mmap(NULL, PAGE_SIZE * 2, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-        ASSERT_TRUE(ptr != NULL);
-
-        memset(ptr, 0, PAGE_SIZE);
-        memset(ptr + PAGE_SIZE, 0xaa, PAGE_SIZE);
-
-        ASSERT_EQ(0, munmap(ptr, PAGE_SIZE * 2));
-
-        ptr = (unsigned char *)mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, PAGE_SIZE);
-        ASSERT_TRUE(ptr != NULL);
-
-        ASSERT_EQ(ptr[0], 0xaa);
-        ASSERT_EQ(ptr[PAGE_SIZE - 1], 0xaa);
-
-        ASSERT_EQ(0, munmap(ptr, PAGE_SIZE));
-
-        ASSERT_EQ(0, close(map_fd));
-    }
-}
-
-TEST_F(Map, MapCached)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            int map_fd = -1;
-            unsigned int flags = ION_FLAG_CACHED;
-
-            ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, flags, &map_fd));
-            ASSERT_GE(map_fd, 0);
-
-            void *ptr;
-            ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-            ASSERT_TRUE(ptr != NULL);
-
-            ASSERT_EQ(0, close(map_fd));
-
-            memset(ptr, 0xaa, size);
-
-            ASSERT_EQ(0, munmap(ptr, size));
-        }
-    }
-}
-
-TEST_F(Map, MapCachedNeedsSync)
-{
-    static const size_t allocationSizes[] = {4*1024, 64*1024, 1024*1024, 2*1024*1024};
-    for (unsigned int heapMask : m_allHeaps) {
-        for (size_t size : allocationSizes) {
-            SCOPED_TRACE(::testing::Message() << "heap " << heapMask);
-            SCOPED_TRACE(::testing::Message() << "size " << size);
-            int map_fd = -1;
-            unsigned int flags = ION_FLAG_CACHED | ION_FLAG_CACHED_NEEDS_SYNC;
-
-            ASSERT_EQ(0, ion_alloc_fd(m_ionFd, size, 0, heapMask, flags, &map_fd));
-            ASSERT_GE(map_fd, 0);
-
-            void *ptr;
-            ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
-            ASSERT_TRUE(ptr != NULL);
-
-            ASSERT_EQ(0, close(map_fd));
-
-            memset(ptr, 0xaa, size);
-
-            ASSERT_EQ(0, munmap(ptr, size));
-        }
-    }
-}
diff --git a/libkeyutils/Android.bp b/libkeyutils/Android.bp
index dda491a..b388e95 100644
--- a/libkeyutils/Android.bp
+++ b/libkeyutils/Android.bp
@@ -16,17 +16,3 @@
     srcs: ["keyutils_test.cpp"],
     test_suites: ["device-tests"],
 }
-
-cc_binary {
-    name: "mini-keyctl",
-    srcs: [
-        "mini_keyctl.cpp",
-        "mini_keyctl_utils.cpp"
-    ],
-    shared_libs: [
-        "libbase",
-        "libkeyutils",
-        "liblog",
-    ],
-    cflags: ["-Werror", "-Wall", "-Wextra", "-fexceptions"],
-}
diff --git a/libkeyutils/keyutils.cpp b/libkeyutils/keyutils.cpp
index 8f63f70..1c5acc9 100644
--- a/libkeyutils/keyutils.cpp
+++ b/libkeyutils/keyutils.cpp
@@ -32,17 +32,7 @@
 #include <sys/syscall.h>
 #include <unistd.h>
 
-// Deliberately not exposed. Callers should use the typed APIs instead.
-static long keyctl(int cmd, ...) {
-  va_list va;
-  va_start(va, cmd);
-  unsigned long arg2 = va_arg(va, unsigned long);
-  unsigned long arg3 = va_arg(va, unsigned long);
-  unsigned long arg4 = va_arg(va, unsigned long);
-  unsigned long arg5 = va_arg(va, unsigned long);
-  va_end(va);
-  return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
-}
+// keyctl(2) is deliberately not exposed. Callers should use the typed APIs instead.
 
 key_serial_t add_key(const char* type, const char* description, const void* payload,
                      size_t payload_length, key_serial_t ring_id) {
@@ -50,30 +40,30 @@
 }
 
 key_serial_t keyctl_get_keyring_ID(key_serial_t id, int create) {
-  return keyctl(KEYCTL_GET_KEYRING_ID, id, create);
+  return syscall(__NR_keyctl, KEYCTL_GET_KEYRING_ID, id, create);
 }
 
 long keyctl_revoke(key_serial_t id) {
-  return keyctl(KEYCTL_REVOKE, id);
+  return syscall(__NR_keyctl, KEYCTL_REVOKE, id);
 }
 
 long keyctl_search(key_serial_t ring_id, const char* type, const char* description,
                    key_serial_t dest_ring_id) {
-  return keyctl(KEYCTL_SEARCH, ring_id, type, description, dest_ring_id);
+  return syscall(__NR_keyctl, KEYCTL_SEARCH, ring_id, type, description, dest_ring_id);
 }
 
 long keyctl_setperm(key_serial_t id, int permissions) {
-  return keyctl(KEYCTL_SETPERM, id, permissions);
+  return syscall(__NR_keyctl, KEYCTL_SETPERM, id, permissions);
 }
 
 long keyctl_unlink(key_serial_t key, key_serial_t keyring) {
-  return keyctl(KEYCTL_UNLINK, key, keyring);
+  return syscall(__NR_keyctl, KEYCTL_UNLINK, key, keyring);
 }
 
 long keyctl_restrict_keyring(key_serial_t keyring, const char* type, const char* restriction) {
-  return keyctl(KEYCTL_RESTRICT_KEYRING, keyring, type, restriction);
+  return syscall(__NR_keyctl, KEYCTL_RESTRICT_KEYRING, keyring, type, restriction);
 }
 
 long keyctl_get_security(key_serial_t id, char* buffer, size_t buflen) {
-  return keyctl(KEYCTL_GET_SECURITY, id, buffer, buflen);
+  return syscall(__NR_keyctl, KEYCTL_GET_SECURITY, id, buffer, buflen);
 }
diff --git a/libkeyutils/mini_keyctl.cpp b/libkeyutils/mini_keyctl.cpp
deleted file mode 100644
index fe89e62..0000000
--- a/libkeyutils/mini_keyctl.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * A tool loads keys to keyring.
- */
-
-#include "mini_keyctl_utils.h"
-
-#include <error.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include <android-base/parseint.h>
-
-static void Usage(int exit_code) {
-  fprintf(stderr, "usage: mini-keyctl <action> [args,]\n");
-  fprintf(stderr, "       mini-keyctl add <type> <desc> <data> <keyring>\n");
-  fprintf(stderr, "       mini-keyctl padd <type> <desc> <keyring>\n");
-  fprintf(stderr, "       mini-keyctl unlink <key> <keyring>\n");
-  fprintf(stderr, "       mini-keyctl restrict_keyring <keyring>\n");
-  fprintf(stderr, "       mini-keyctl security <key>\n");
-  _exit(exit_code);
-}
-
-static key_serial_t parseKeyOrDie(const char* str) {
-  key_serial_t key;
-  if (!android::base::ParseInt(str, &key)) {
-    error(1 /* exit code */, 0 /* errno */, "Unparsable key: '%s'\n", str);
-  }
-  return key;
-}
-
-int main(int argc, const char** argv) {
-  if (argc < 2) Usage(1);
-  const std::string action = argv[1];
-
-  if (action == "add") {
-    if (argc != 6) Usage(1);
-    std::string type = argv[2];
-    std::string desc = argv[3];
-    std::string data = argv[4];
-    std::string keyring = argv[5];
-    return Add(type, desc, data, keyring);
-  } else if (action == "padd") {
-    if (argc != 5) Usage(1);
-    std::string type = argv[2];
-    std::string desc = argv[3];
-    std::string keyring = argv[4];
-    return Padd(type, desc, keyring);
-  } else if (action == "restrict_keyring") {
-    if (argc != 3) Usage(1);
-    std::string keyring = argv[2];
-    return RestrictKeyring(keyring);
-  } else if (action == "unlink") {
-    if (argc != 4) Usage(1);
-    key_serial_t key = parseKeyOrDie(argv[2]);
-    const std::string keyring = argv[3];
-    return Unlink(key, keyring);
-  } else if (action == "security") {
-    if (argc != 3) Usage(1);
-    const char* key_str = argv[2];
-    key_serial_t key = parseKeyOrDie(key_str);
-    std::string context = RetrieveSecurityContext(key);
-    if (context.empty()) {
-      perror(key_str);
-      return 1;
-    }
-    fprintf(stderr, "%s\n", context.c_str());
-    return 0;
-  } else {
-    fprintf(stderr, "Unrecognized action: %s\n", action.c_str());
-    Usage(1);
-  }
-
-  return 0;
-}
diff --git a/libkeyutils/mini_keyctl/Android.bp b/libkeyutils/mini_keyctl/Android.bp
new file mode 100644
index 0000000..a04a3db
--- /dev/null
+++ b/libkeyutils/mini_keyctl/Android.bp
@@ -0,0 +1,27 @@
+cc_library_static {
+    name: "libmini_keyctl_static",
+    srcs: [
+        "mini_keyctl_utils.cpp"
+    ],
+    shared_libs: [
+        "libbase",
+        "libkeyutils",
+    ],
+    cflags: ["-Werror", "-Wall", "-Wextra"],
+    export_include_dirs: ["."],
+}
+
+cc_binary {
+    name: "mini-keyctl",
+    srcs: [
+        "mini_keyctl.cpp",
+    ],
+    static_libs: [
+        "libmini_keyctl_static",
+    ],
+    shared_libs: [
+        "libbase",
+        "libkeyutils",
+    ],
+    cflags: ["-Werror", "-Wall", "-Wextra"],
+}
diff --git a/libkeyutils/mini_keyctl/mini_keyctl.cpp b/libkeyutils/mini_keyctl/mini_keyctl.cpp
new file mode 100644
index 0000000..8aace9a
--- /dev/null
+++ b/libkeyutils/mini_keyctl/mini_keyctl.cpp
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * A tool loads keys to keyring.
+ */
+
+#include <dirent.h>
+#include <errno.h>
+#include <error.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <iostream>
+#include <iterator>
+#include <string>
+
+#include <android-base/file.h>
+#include <android-base/parseint.h>
+#include <keyutils.h>
+#include <mini_keyctl_utils.h>
+
+constexpr int kMaxCertSize = 4096;
+
+static void Usage(int exit_code) {
+  fprintf(stderr, "usage: mini-keyctl <action> [args,]\n");
+  fprintf(stderr, "       mini-keyctl add <type> <desc> <data> <keyring>\n");
+  fprintf(stderr, "       mini-keyctl padd <type> <desc> <keyring>\n");
+  fprintf(stderr, "       mini-keyctl unlink <key> <keyring>\n");
+  fprintf(stderr, "       mini-keyctl restrict_keyring <keyring>\n");
+  fprintf(stderr, "       mini-keyctl security <key>\n");
+  _exit(exit_code);
+}
+
+static key_serial_t parseKeyOrDie(const char* str) {
+  key_serial_t key;
+  if (!android::base::ParseInt(str, &key)) {
+    error(1 /* exit code */, 0 /* errno */, "Unparsable key: '%s'\n", str);
+  }
+  return key;
+}
+
+int Unlink(key_serial_t key, const std::string& keyring) {
+  key_serial_t keyring_id = android::GetKeyringId(keyring);
+  if (keyctl_unlink(key, keyring_id) < 0) {
+    error(1, errno, "Failed to unlink key %x from keyring %s", key, keyring.c_str());
+    return 1;
+  }
+  return 0;
+}
+
+int Add(const std::string& type, const std::string& desc, const std::string& data,
+        const std::string& keyring) {
+  if (data.size() > kMaxCertSize) {
+    error(1, 0, "Certificate too large");
+    return 1;
+  }
+
+  key_serial_t keyring_id = android::GetKeyringId(keyring);
+  key_serial_t key = add_key(type.c_str(), desc.c_str(), data.c_str(), data.size(), keyring_id);
+
+  if (key < 0) {
+    error(1, errno, "Failed to add key");
+    return 1;
+  }
+
+  std::cout << key << std::endl;
+  return 0;
+}
+
+int Padd(const std::string& type, const std::string& desc, const std::string& keyring) {
+  key_serial_t keyring_id = android::GetKeyringId(keyring);
+
+  // read from stdin to get the certificates
+  std::istreambuf_iterator<char> begin(std::cin), end;
+  std::string data(begin, end);
+
+  if (data.size() > kMaxCertSize) {
+    error(1, 0, "Certificate too large");
+    return 1;
+  }
+
+  key_serial_t key = add_key(type.c_str(), desc.c_str(), data.c_str(), data.size(), keyring_id);
+
+  if (key < 0) {
+    error(1, errno, "Failed to add key");
+    return 1;
+  }
+
+  std::cout << key << std::endl;
+  return 0;
+}
+
+int RestrictKeyring(const std::string& keyring) {
+  key_serial_t keyring_id = android::GetKeyringId(keyring);
+  if (keyctl_restrict_keyring(keyring_id, nullptr, nullptr) < 0) {
+    error(1, errno, "Cannot restrict keyring '%s'", keyring.c_str());
+    return 1;
+  }
+  return 0;
+}
+
+std::string RetrieveSecurityContext(key_serial_t key) {
+  // Simply assume this size is enough in practice.
+  const int kMaxSupportedSize = 256;
+  std::string context;
+  context.resize(kMaxSupportedSize);
+  long retval = keyctl_get_security(key, context.data(), kMaxSupportedSize);
+  if (retval < 0) {
+    error(1, errno, "Cannot get security context of key %x", key);
+    return std::string();
+  }
+  if (retval > kMaxSupportedSize) {
+    error(1, 0, "The key has unexpectedly long security context than %d", kMaxSupportedSize);
+    return std::string();
+  }
+  context.resize(retval);
+  return context;
+}
+
+int main(int argc, const char** argv) {
+  if (argc < 2) Usage(1);
+  const std::string action = argv[1];
+
+  if (action == "add") {
+    if (argc != 6) Usage(1);
+    std::string type = argv[2];
+    std::string desc = argv[3];
+    std::string data = argv[4];
+    std::string keyring = argv[5];
+    return Add(type, desc, data, keyring);
+  } else if (action == "padd") {
+    if (argc != 5) Usage(1);
+    std::string type = argv[2];
+    std::string desc = argv[3];
+    std::string keyring = argv[4];
+    return Padd(type, desc, keyring);
+  } else if (action == "restrict_keyring") {
+    if (argc != 3) Usage(1);
+    std::string keyring = argv[2];
+    return RestrictKeyring(keyring);
+  } else if (action == "unlink") {
+    if (argc != 4) Usage(1);
+    key_serial_t key = parseKeyOrDie(argv[2]);
+    const std::string keyring = argv[3];
+    return Unlink(key, keyring);
+  } else if (action == "security") {
+    if (argc != 3) Usage(1);
+    const char* key_str = argv[2];
+    key_serial_t key = parseKeyOrDie(key_str);
+    std::string context = RetrieveSecurityContext(key);
+    if (context.empty()) {
+      perror(key_str);
+      return 1;
+    }
+    fprintf(stderr, "%s\n", context.c_str());
+    return 0;
+  } else {
+    fprintf(stderr, "Unrecognized action: %s\n", action.c_str());
+    Usage(1);
+  }
+
+  return 0;
+}
diff --git a/libkeyutils/mini_keyctl/mini_keyctl_utils.cpp b/libkeyutils/mini_keyctl/mini_keyctl_utils.cpp
new file mode 100644
index 0000000..fb9503f
--- /dev/null
+++ b/libkeyutils/mini_keyctl/mini_keyctl_utils.cpp
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <mini_keyctl_utils.h>
+
+#include <fstream>
+#include <iterator>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/parseint.h>
+
+namespace android {
+
+namespace {
+
+std::vector<std::string> SplitBySpace(const std::string& s) {
+  std::istringstream iss(s);
+  return std::vector<std::string>{std::istream_iterator<std::string>{iss},
+                                  std::istream_iterator<std::string>{}};
+}
+
+}  // namespace
+
+// Find the keyring id. request_key(2) only finds keys in the process, session or thread keyring
+// hierarchy, but not internal keyring of a kernel subsystem (e.g. .fs-verity). To support all
+// cases, this function looks up a keyring's ID by parsing /proc/keys. The keyring description may
+// contain other information in the descritption section depending on the key type, only the first
+// word in the keyring description is used for searching.
+key_serial_t GetKeyringId(const std::string& keyring_desc) {
+  // If the keyring id is already a hex number, directly convert it to keyring id
+  key_serial_t keyring_id;
+  if (android::base::ParseInt(keyring_desc.c_str(), &keyring_id)) {
+    return keyring_id;
+  }
+
+  // Only keys allowed by SELinux rules will be shown here.
+  std::ifstream proc_keys_file("/proc/keys");
+  if (!proc_keys_file.is_open()) {
+    PLOG(ERROR) << "Failed to open /proc/keys";
+    return -1;
+  }
+
+  std::string line;
+  while (getline(proc_keys_file, line)) {
+    std::vector<std::string> tokens = SplitBySpace(line);
+    if (tokens.size() < 9) {
+      continue;
+    }
+    std::string key_id = "0x" + tokens[0];
+    std::string key_type = tokens[7];
+    // The key description may contain space.
+    std::string key_desc_prefix = tokens[8];
+    // The prefix has a ":" at the end
+    std::string key_desc_pattern = keyring_desc + ":";
+    if (key_type != "keyring" || key_desc_prefix != key_desc_pattern) {
+      continue;
+    }
+    if (!android::base::ParseInt(key_id.c_str(), &keyring_id)) {
+      LOG(ERROR) << "Unexpected key format in /proc/keys: " << key_id;
+      return -1;
+    }
+    return keyring_id;
+  }
+  return -1;
+}
+
+}  // namespace android
diff --git a/libkeyutils/mini_keyctl/mini_keyctl_utils.h b/libkeyutils/mini_keyctl/mini_keyctl_utils.h
new file mode 100644
index 0000000..cc31d29
--- /dev/null
+++ b/libkeyutils/mini_keyctl/mini_keyctl_utils.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _MINI_KEYCTL_MINI_KEYCTL_UTILS_H_
+#define _MINI_KEYCTL_MINI_KEYCTL_UTILS_H_
+
+#include <string>
+
+#include <keyutils.h>
+
+namespace android {
+key_serial_t GetKeyringId(const std::string& keyring_desc);
+}  // namespace android
+
+#endif  // _MINI_KEYCTL_MINI_KEYCTL_UTILS_H_
diff --git a/libkeyutils/mini_keyctl_utils.cpp b/libkeyutils/mini_keyctl_utils.cpp
deleted file mode 100644
index 56afea4..0000000
--- a/libkeyutils/mini_keyctl_utils.cpp
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <mini_keyctl_utils.h>
-
-#include <dirent.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <fstream>
-#include <iostream>
-#include <iterator>
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/properties.h>
-#include <android-base/strings.h>
-#include <keyutils.h>
-
-static constexpr int kMaxCertSize = 4096;
-
-static std::vector<std::string> SplitBySpace(const std::string& s) {
-  std::istringstream iss(s);
-  return std::vector<std::string>{std::istream_iterator<std::string>{iss},
-                                  std::istream_iterator<std::string>{}};
-}
-
-// Find the keyring id. Because request_key(2) syscall is not available or the key is
-// kernel keyring, the id is looked up from /proc/keys. The keyring description may contain other
-// information in the descritption section depending on the key type, only the first word in the
-// keyring description is used for searching.
-static bool GetKeyringId(const std::string& keyring_desc, key_serial_t* keyring_id) {
-  if (!keyring_id) {
-    LOG(ERROR) << "keyring_id is null";
-    return false;
-  }
-
-  // If the keyring id is already a hex number, directly convert it to keyring id
-  if (android::base::ParseInt(keyring_desc.c_str(), keyring_id)) {
-    return true;
-  }
-
-  // Only keys allowed by SELinux rules will be shown here.
-  std::ifstream proc_keys_file("/proc/keys");
-  if (!proc_keys_file.is_open()) {
-    PLOG(ERROR) << "Failed to open /proc/keys";
-    return false;
-  }
-
-  std::string line;
-  while (getline(proc_keys_file, line)) {
-    std::vector<std::string> tokens = SplitBySpace(line);
-    if (tokens.size() < 9) {
-      continue;
-    }
-    std::string key_id = tokens[0];
-    std::string key_type = tokens[7];
-    // The key description may contain space.
-    std::string key_desc_prefix = tokens[8];
-    // The prefix has a ":" at the end
-    std::string key_desc_pattern = keyring_desc + ":";
-    if (key_type != "keyring" || key_desc_prefix != key_desc_pattern) {
-      continue;
-    }
-    *keyring_id = std::stoi(key_id, nullptr, 16);
-    return true;
-  }
-  return false;
-}
-
-int Unlink(key_serial_t key, const std::string& keyring) {
-  key_serial_t keyring_id;
-  if (!GetKeyringId(keyring, &keyring_id)) {
-    LOG(ERROR) << "Can't find keyring " << keyring;
-    return 1;
-  }
-
-  if (keyctl_unlink(key, keyring_id) < 0) {
-    PLOG(ERROR) << "Failed to unlink key 0x" << std::hex << key << " from keyring " << keyring_id;
-    return 1;
-  }
-  return 0;
-}
-
-int Add(const std::string& type, const std::string& desc, const std::string& data,
-        const std::string& keyring) {
-  if (data.size() > kMaxCertSize) {
-    LOG(ERROR) << "Certificate too large";
-    return 1;
-  }
-
-  key_serial_t keyring_id;
-  if (!GetKeyringId(keyring, &keyring_id)) {
-    LOG(ERROR) << "Can not find keyring id";
-    return 1;
-  }
-
-  key_serial_t key = add_key(type.c_str(), desc.c_str(), data.c_str(), data.size(), keyring_id);
-
-  if (key < 0) {
-    PLOG(ERROR) << "Failed to add key";
-    return 1;
-  }
-
-  LOG(INFO) << "Key " << desc << " added to " << keyring << " with key id: 0x" << std::hex << key;
-  return 0;
-}
-
-int Padd(const std::string& type, const std::string& desc, const std::string& keyring) {
-  key_serial_t keyring_id;
-  if (!GetKeyringId(keyring, &keyring_id)) {
-    LOG(ERROR) << "Can not find keyring id";
-    return 1;
-  }
-
-  // read from stdin to get the certificates
-  std::istreambuf_iterator<char> begin(std::cin), end;
-  std::string data(begin, end);
-
-  if (data.size() > kMaxCertSize) {
-    LOG(ERROR) << "Certificate too large";
-    return 1;
-  }
-
-  key_serial_t key = add_key(type.c_str(), desc.c_str(), data.c_str(), data.size(), keyring_id);
-
-  if (key < 0) {
-    PLOG(ERROR) << "Failed to add key";
-    return 1;
-  }
-
-  LOG(INFO) << "Key " << desc << " added to " << keyring << " with key id: 0x" << std::hex << key;
-  return 0;
-}
-
-int RestrictKeyring(const std::string& keyring) {
-  key_serial_t keyring_id;
-  if (!GetKeyringId(keyring, &keyring_id)) {
-    LOG(ERROR) << "Cannot find keyring id";
-    return 1;
-  }
-
-  if (keyctl_restrict_keyring(keyring_id, nullptr, nullptr) < 0) {
-    PLOG(ERROR) << "Cannot restrict keyring " << keyring;
-    return 1;
-  }
-  return 0;
-}
-
-std::string RetrieveSecurityContext(key_serial_t key) {
-  // Simply assume this size is enough in practice.
-  const int kMaxSupportedSize = 256;
-  std::string context;
-  context.resize(kMaxSupportedSize);
-  long retval = keyctl_get_security(key, context.data(), kMaxSupportedSize);
-  if (retval < 0) {
-    PLOG(ERROR) << "Cannot get security context of key 0x" << std::hex << key;
-    return std::string();
-  }
-  if (retval > kMaxSupportedSize) {
-    LOG(ERROR) << "The key has unexpectedly long security context than " << kMaxSupportedSize;
-    return std::string();
-  }
-  context.resize(retval);
-  return context;
-}
diff --git a/libkeyutils/mini_keyctl_utils.h b/libkeyutils/mini_keyctl_utils.h
deleted file mode 100644
index 3616831..0000000
--- a/libkeyutils/mini_keyctl_utils.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "include/keyutils.h"
-
-#include <string>
-
-// Add key to a keyring. Returns non-zero if error happens.
-int Add(const std::string& type, const std::string& desc, const std::string& data,
-        const std::string& keyring);
-
-// Add key from stdin to a keyring. Returns non-zero if error happens.
-int Padd(const std::string& type, const std::string& desc, const std::string& keyring);
-
-// Removes the link from a keyring to a key if exists. Return non-zero if error happens.
-int Unlink(key_serial_t key, const std::string& keyring);
-
-// Apply key-linking to a keyring. Return non-zero if error happens.
-int RestrictKeyring(const std::string& keyring);
-
-// Retrieves a key's security context. Return the context string, or empty string on error.
-std::string RetrieveSecurityContext(key_serial_t key);
diff --git a/liblog/Android.bp b/liblog/Android.bp
index da475cb..6051ac7 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -15,25 +15,17 @@
 //
 
 liblog_sources = [
-    "config_read.cpp",
-    "config_write.cpp",
     "log_event_list.cpp",
     "log_event_write.cpp",
-    "logger_lock.cpp",
     "logger_name.cpp",
     "logger_read.cpp",
     "logger_write.cpp",
     "logprint.cpp",
-    "stderr_write.cpp",
-]
-liblog_host_sources = [
-    "fake_log_device.cpp",
-    "fake_writer.cpp",
+    "properties.cpp",
 ]
 liblog_target_sources = [
     "event_tag_map.cpp",
     "log_time.cpp",
-    "properties.cpp",
     "pmsg_reader.cpp",
     "pmsg_writer.cpp",
     "logd_reader.cpp",
@@ -44,7 +36,14 @@
     name: "liblog_headers",
     host_supported: true,
     vendor_available: true,
+    ramdisk_available: true,
     recovery_available: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "29",
+    native_bridge_supported: true,
     export_include_dirs: ["include"],
     system_shared_libs: [],
     stl: "none",
@@ -66,14 +65,12 @@
 cc_library {
     name: "liblog",
     host_supported: true,
+    ramdisk_available: true,
     recovery_available: true,
+    native_bridge_supported: true,
     srcs: liblog_sources,
 
     target: {
-        host: {
-            srcs: liblog_host_sources,
-            cflags: ["-DFAKE_LOG_DEVICE=1"],
-        },
         android: {
             version_script: "liblog.map.txt",
             srcs: liblog_target_sources,
@@ -98,16 +95,21 @@
         },
     },
 
-    header_libs: ["liblog_headers"],
+    header_libs: [
+        "libbase_headers",
+        "liblog_headers",
+    ],
     export_header_lib_headers: ["liblog_headers"],
 
     stubs: {
         symbol_file: "liblog.map.txt",
-        versions: ["10000"],
+        versions: ["29", "30"],
     },
 
     cflags: [
+        "-Wall",
         "-Werror",
+        "-Wextra",
         // This is what we want to do:
         //  liblog_cflags := $(shell \
         //   sed -n \
@@ -119,6 +121,14 @@
     ],
     logtags: ["event.logtags"],
     compile_multilib: "both",
+    apex_available: [
+        "//apex_available:platform",
+        // liblog is exceptionally available to the runtime APEX
+        // because the dynamic linker has to use it statically.
+        // See b/151051671
+        "com.android.runtime",
+        // DO NOT add more apex names here
+    ],
 }
 
 ndk_headers {
@@ -138,6 +148,7 @@
 
 llndk_library {
     name: "liblog",
+    native_bridge_supported: true,
     symbol_file: "liblog.map.txt",
     export_include_dirs: ["include_vndk"],
 }
diff --git a/liblog/README.md b/liblog/README.md
index 98bee9f..871399a 100644
--- a/liblog/README.md
+++ b/liblog/README.md
@@ -96,11 +96,6 @@
 
     int android_log_destroy(android_log_context *ctx)
 
-    #include <log/log_transport.h>
-
-    int android_set_log_transport(int transport_flag)
-    int android_get_log_transport()
-
 Description
 -----------
 
@@ -144,11 +139,6 @@
 that was used when opening the sub-log.  It is recommended to open the log `ANDROID_LOG_RDONLY` in
 these cases.
 
-`android_set_log_transport()` selects transport filters.  Argument is either `LOGGER_DEFAULT`,
-`LOGGER_LOGD`, or `LOGGER_NULL`. Log to logger daemon for default or logd, or drop contents on floor
-respectively.  `Both android_set_log_transport()` and `android_get_log_transport()` return the
-current transport mask, or a negative errno for any problems.
-
 Errors
 ------
 
diff --git a/liblog/README.protocol.md b/liblog/README.protocol.md
new file mode 100644
index 0000000..fef29c9
--- /dev/null
+++ b/liblog/README.protocol.md
@@ -0,0 +1,49 @@
+# liblog -> logd
+
+The data that liblog sends to logd is represented below.
+
+    struct {
+        android_log_header_t header;
+        union {
+           struct {
+                char     prio;
+                char     tag[...];
+                char     message[...];
+            } string;
+            struct {
+                android_event_header_t event_header;
+                android_event_*_t      payload[...];
+            } binary;
+        };
+    };
+
+The payload, excluding the header, has a max size of LOGGER_ENTRY_MAX_PAYLOAD.
+
+## header
+
+The header is added immediately before sending the log message to logd.
+
+## `string` payload
+
+The `string` part of the union is for normal buffers (main, system, radio, etc) and consists of a
+single character priority, followed by a variable length null terminated string for the tag, and
+finally a variable length null terminated string for the message.
+
+This payload is used for the `__android_log_buf_write()` family of functions.
+
+## `binary` payload
+
+The `binary` part of the union is for binary buffers (events, security, etc) and consists of an
+android_event_header_t struct followed by a variable number of android_event_*_t
+(android_event_list_t, android_event_int_t, etc) structs.
+
+If multiple android_event_*_t elements are present, then they must be in a list and the first
+element in payload must be an android_event_list_t.
+
+This payload is used for the `__android_log_bwrite()` family of functions. It is additionally used
+for `android_log_write_list()` and the related functions that manipulate event lists.
+
+# logd -> liblog
+
+logd sends a `logger_entry` struct to liblog followed by the payload. The payload is identical to
+the payloads defined above. The max size of the entire message from logd is LOGGER_ENTRY_MAX_LEN.
diff --git a/liblog/config_read.cpp b/liblog/config_read.cpp
deleted file mode 100644
index 3139f78..0000000
--- a/liblog/config_read.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <log/log_transport.h>
-
-#include "config_read.h"
-#include "logger.h"
-
-struct listnode __android_log_transport_read = {&__android_log_transport_read,
-                                                &__android_log_transport_read};
-struct listnode __android_log_persist_read = {&__android_log_persist_read,
-                                              &__android_log_persist_read};
-
-static void __android_log_add_transport(struct listnode* list,
-                                        struct android_log_transport_read* transport) {
-  uint32_t i;
-
-  /* Try to keep one functioning transport for each log buffer id */
-  for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) {
-    struct android_log_transport_read* transp;
-
-    if (list_empty(list)) {
-      if (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0)) {
-        list_add_tail(list, &transport->node);
-        return;
-      }
-    } else {
-      read_transport_for_each(transp, list) {
-        if (!transp->available) {
-          return;
-        }
-        if (((*transp->available)(static_cast<log_id_t>(i)) < 0) &&
-            (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0))) {
-          list_add_tail(list, &transport->node);
-          return;
-        }
-      }
-    }
-  }
-}
-
-void __android_log_config_read() {
-#if (FAKE_LOG_DEVICE == 0)
-  if ((__android_log_transport == LOGGER_DEFAULT) || (__android_log_transport & LOGGER_LOGD)) {
-    extern struct android_log_transport_read logdLoggerRead;
-    extern struct android_log_transport_read pmsgLoggerRead;
-
-    __android_log_add_transport(&__android_log_transport_read, &logdLoggerRead);
-    __android_log_add_transport(&__android_log_persist_read, &pmsgLoggerRead);
-  }
-#endif
-}
-
-void __android_log_config_read_close() {
-  struct android_log_transport_read* transport;
-  struct listnode* n;
-
-  read_transport_for_each_safe(transport, n, &__android_log_transport_read) {
-    list_remove(&transport->node);
-  }
-  read_transport_for_each_safe(transport, n, &__android_log_persist_read) {
-    list_remove(&transport->node);
-  }
-}
diff --git a/liblog/config_read.h b/liblog/config_read.h
deleted file mode 100644
index 212b8a0..0000000
--- a/liblog/config_read.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <cutils/list.h>
-
-#include "log_portability.h"
-
-__BEGIN_DECLS
-
-extern struct listnode __android_log_transport_read;
-extern struct listnode __android_log_persist_read;
-
-#define read_transport_for_each(transp, transports)                           \
-  for ((transp) = node_to_item((transports)->next,                            \
-                               struct android_log_transport_read, node);      \
-       ((transp) != node_to_item((transports),                                \
-                                 struct android_log_transport_read, node)) && \
-       ((transp) != node_to_item((transp)->node.next,                         \
-                                 struct android_log_transport_read, node));   \
-       (transp) = node_to_item((transp)->node.next,                           \
-                               struct android_log_transport_read, node))
-
-#define read_transport_for_each_safe(transp, n, transports)                   \
-  for ((transp) = node_to_item((transports)->next,                            \
-                               struct android_log_transport_read, node),      \
-      (n) = (transp)->node.next;                                              \
-       ((transp) != node_to_item((transports),                                \
-                                 struct android_log_transport_read, node)) && \
-       ((transp) !=                                                           \
-        node_to_item((n), struct android_log_transport_read, node));          \
-       (transp) = node_to_item((n), struct android_log_transport_read, node), \
-      (n) = (transp)->node.next)
-
-void __android_log_config_read();
-void __android_log_config_read_close();
-
-__END_DECLS
diff --git a/liblog/config_write.cpp b/liblog/config_write.cpp
deleted file mode 100644
index d454379..0000000
--- a/liblog/config_write.cpp
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <log/log_transport.h>
-
-#include "config_write.h"
-#include "logger.h"
-
-struct listnode __android_log_transport_write = {&__android_log_transport_write,
-                                                 &__android_log_transport_write};
-struct listnode __android_log_persist_write = {&__android_log_persist_write,
-                                               &__android_log_persist_write};
-
-static void __android_log_add_transport(struct listnode* list,
-                                        struct android_log_transport_write* transport) {
-  uint32_t i;
-
-  /* Try to keep one functioning transport for each log buffer id */
-  for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) {
-    struct android_log_transport_write* transp;
-
-    if (list_empty(list)) {
-      if (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0)) {
-        list_add_tail(list, &transport->node);
-        return;
-      }
-    } else {
-      write_transport_for_each(transp, list) {
-        if (!transp->available) {
-          return;
-        }
-        if (((*transp->available)(static_cast<log_id_t>(i)) < 0) &&
-            (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0))) {
-          list_add_tail(list, &transport->node);
-          return;
-        }
-      }
-    }
-  }
-}
-
-void __android_log_config_write() {
-  if ((__android_log_transport == LOGGER_DEFAULT) || (__android_log_transport & LOGGER_LOGD)) {
-#if (FAKE_LOG_DEVICE == 0)
-    extern struct android_log_transport_write logdLoggerWrite;
-    extern struct android_log_transport_write pmsgLoggerWrite;
-
-    __android_log_add_transport(&__android_log_transport_write, &logdLoggerWrite);
-    __android_log_add_transport(&__android_log_persist_write, &pmsgLoggerWrite);
-#else
-    extern struct android_log_transport_write fakeLoggerWrite;
-
-    __android_log_add_transport(&__android_log_transport_write, &fakeLoggerWrite);
-#endif
-  }
-
-  if (__android_log_transport & LOGGER_STDERR) {
-    extern struct android_log_transport_write stderrLoggerWrite;
-
-    /*
-     * stderr logger should be primary if we can be the only one, or if
-     * already in the primary list.  Otherwise land in the persist list.
-     * Remember we can be called here if we are already initialized.
-     */
-    if (list_empty(&__android_log_transport_write)) {
-      __android_log_add_transport(&__android_log_transport_write, &stderrLoggerWrite);
-    } else {
-      struct android_log_transport_write* transp;
-      write_transport_for_each(transp, &__android_log_transport_write) {
-        if (transp == &stderrLoggerWrite) {
-          return;
-        }
-      }
-      __android_log_add_transport(&__android_log_persist_write, &stderrLoggerWrite);
-    }
-  }
-}
-
-void __android_log_config_write_close() {
-  struct android_log_transport_write* transport;
-  struct listnode* n;
-
-  write_transport_for_each_safe(transport, n, &__android_log_transport_write) {
-    transport->logMask = 0;
-    list_remove(&transport->node);
-  }
-  write_transport_for_each_safe(transport, n, &__android_log_persist_write) {
-    transport->logMask = 0;
-    list_remove(&transport->node);
-  }
-}
diff --git a/liblog/config_write.h b/liblog/config_write.h
deleted file mode 100644
index a901f13..0000000
--- a/liblog/config_write.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <cutils/list.h>
-
-#include "log_portability.h"
-
-__BEGIN_DECLS
-
-extern struct listnode __android_log_transport_write;
-extern struct listnode __android_log_persist_write;
-
-#define write_transport_for_each(transp, transports)                           \
-  for ((transp) = node_to_item((transports)->next,                             \
-                               struct android_log_transport_write, node);      \
-       ((transp) != node_to_item((transports),                                 \
-                                 struct android_log_transport_write, node)) && \
-       ((transp) != node_to_item((transp)->node.next,                          \
-                                 struct android_log_transport_write, node));   \
-       (transp) = node_to_item((transp)->node.next,                            \
-                               struct android_log_transport_write, node))
-
-#define write_transport_for_each_safe(transp, n, transports)                   \
-  for ((transp) = node_to_item((transports)->next,                             \
-                               struct android_log_transport_write, node),      \
-      (n) = (transp)->node.next;                                               \
-       ((transp) != node_to_item((transports),                                 \
-                                 struct android_log_transport_write, node)) && \
-       ((transp) !=                                                            \
-        node_to_item((n), struct android_log_transport_write, node));          \
-       (transp) = node_to_item((n), struct android_log_transport_write, node), \
-      (n) = (transp)->node.next)
-
-void __android_log_config_write();
-void __android_log_config_write_close();
-
-__END_DECLS
diff --git a/liblog/event_tag_map.cpp b/liblog/event_tag_map.cpp
index 22cf43b..51c5e60 100644
--- a/liblog/event_tag_map.cpp
+++ b/liblog/event_tag_map.cpp
@@ -36,7 +36,6 @@
 #include <utils/FastStrcmp.h>
 #include <utils/RWLock.h>
 
-#include "log_portability.h"
 #include "logd_reader.h"
 
 #define OUT_TAG "EventTagMap"
@@ -494,7 +493,7 @@
 
 // Cache miss, go to logd to acquire a public reference.
 // Because we lack access to a SHARED PUBLIC /dev/event-log-tags file map?
-static const TagFmt* __getEventTag(EventTagMap* map, unsigned int tag) {
+static const TagFmt* __getEventTag([[maybe_unused]] EventTagMap* map, unsigned int tag) {
   // call event tag service to arrange for a new tag
   char* buf = NULL;
   // Can not use android::base::StringPrintf, asprintf + free instead.
@@ -515,8 +514,9 @@
     } else {
       size = ret;
     }
+#ifdef __ANDROID__
     // Ask event log tag service for an existing entry
-    if (__send_log_msg(buf, size) >= 0) {
+    if (SendLogdControlMessage(buf, size) >= 0) {
       buf[size - 1] = '\0';
       char* ep;
       unsigned long val = strtoul(buf, &ep, 10);  // return size
@@ -529,6 +529,7 @@
         }
       }
     }
+#endif
     free(buf);
   }
   return NULL;
@@ -618,8 +619,9 @@
     } else {
       size = ret;
     }
+#ifdef __ANDROID__
     // Ask event log tag service for an allocation
-    if (__send_log_msg(buf, size) >= 0) {
+    if (SendLogdControlMessage(buf, size) >= 0) {
       buf[size - 1] = '\0';
       unsigned long val = strtoul(buf, &cp, 10);        // return size
       if ((buf != cp) && (val > 0) && (*cp == '\n')) {  // truncation OK
@@ -635,6 +637,7 @@
         }
       }
     }
+#endif
     free(buf);
   }
 
diff --git a/liblog/fake_log_device.cpp b/liblog/fake_log_device.cpp
deleted file mode 100644
index 428a482..0000000
--- a/liblog/fake_log_device.cpp
+++ /dev/null
@@ -1,669 +0,0 @@
-/*
- * Copyright (C) 2008-2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*
- * Intercepts log messages intended for the Android log device.
- * Messages are printed to stderr.
- */
-
-#include "fake_log_device.h"
-
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#if !defined(_WIN32)
-#include <pthread.h>
-#endif
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-#include <android/log.h>
-
-#include "log_portability.h"
-
-#define kMaxTagLen 16 /* from the long-dead utils/Log.cpp */
-
-#define kTagSetSize 16 /* arbitrary */
-
-#if 0
-#define TRACE(...) printf("fake_log_device: " __VA_ARGS__)
-#else
-#define TRACE(...) ((void)0)
-#endif
-
-/* from the long-dead utils/Log.cpp */
-typedef enum {
-  FORMAT_OFF = 0,
-  FORMAT_BRIEF,
-  FORMAT_PROCESS,
-  FORMAT_TAG,
-  FORMAT_THREAD,
-  FORMAT_RAW,
-  FORMAT_TIME,
-  FORMAT_THREADTIME,
-  FORMAT_LONG
-} LogFormat;
-
-/*
- * Log driver state.
- */
-typedef struct LogState {
-  /* the fake fd that's seen by the user */
-  int fakeFd;
-
-  /* a printable name for this fake device */
-  char debugName[sizeof("/dev/log/security")];
-
-  /* nonzero if this is a binary log */
-  int isBinary;
-
-  /* global minimum priority */
-  int globalMinPriority;
-
-  /* output format */
-  LogFormat outputFormat;
-
-  /* tags and priorities */
-  struct {
-    char tag[kMaxTagLen];
-    int minPriority;
-  } tagSet[kTagSetSize];
-} LogState;
-
-#if !defined(_WIN32)
-/*
- * Locking.  Since we're emulating a device, we need to be prepared
- * to have multiple callers at the same time.  This lock is used
- * to both protect the fd list and to prevent LogStates from being
- * freed out from under a user.
- */
-static pthread_mutex_t fakeLogDeviceLock = PTHREAD_MUTEX_INITIALIZER;
-
-static void lock() {
-  /*
-   * If we trigger a signal handler in the middle of locked activity and the
-   * signal handler logs a message, we could get into a deadlock state.
-   */
-  pthread_mutex_lock(&fakeLogDeviceLock);
-}
-
-static void unlock() {
-  pthread_mutex_unlock(&fakeLogDeviceLock);
-}
-
-#else  // !defined(_WIN32)
-
-#define lock() ((void)0)
-#define unlock() ((void)0)
-
-#endif  // !defined(_WIN32)
-
-/*
- * File descriptor management.
- */
-#define FAKE_FD_BASE 10000
-#define MAX_OPEN_LOGS 8
-static LogState openLogTable[MAX_OPEN_LOGS];
-
-/*
- * Allocate an fd and associate a new LogState with it.
- * The fd is available via the fakeFd field of the return value.
- */
-static LogState* createLogState() {
-  size_t i;
-
-  for (i = 0; i < (sizeof(openLogTable) / sizeof(openLogTable[0])); i++) {
-    if (openLogTable[i].fakeFd == 0) {
-      openLogTable[i].fakeFd = FAKE_FD_BASE + i;
-      return &openLogTable[i];
-    }
-  }
-  return NULL;
-}
-
-/*
- * Translate an fd to a LogState.
- */
-static LogState* fdToLogState(int fd) {
-  if (fd >= FAKE_FD_BASE && fd < FAKE_FD_BASE + MAX_OPEN_LOGS) {
-    return &openLogTable[fd - FAKE_FD_BASE];
-  }
-  return NULL;
-}
-
-/*
- * Unregister the fake fd and free the memory it pointed to.
- */
-static void deleteFakeFd(int fd) {
-  LogState* ls;
-
-  lock();
-
-  ls = fdToLogState(fd);
-  if (ls != NULL) {
-    memset(&openLogTable[fd - FAKE_FD_BASE], 0, sizeof(openLogTable[0]));
-  }
-
-  unlock();
-}
-
-/*
- * Configure logging based on ANDROID_LOG_TAGS environment variable.  We
- * need to parse a string that looks like
- *
- *   *:v jdwp:d dalvikvm:d dalvikvm-gc:i dalvikvmi:i
- *
- * The tag (or '*' for the global level) comes first, followed by a colon
- * and a letter indicating the minimum priority level we're expected to log.
- * This can be used to reveal or conceal logs with specific tags.
- *
- * We also want to check ANDROID_PRINTF_LOG to determine how the output
- * will look.
- */
-static void configureInitialState(const char* pathName, LogState* logState) {
-  static const int kDevLogLen = sizeof("/dev/log/") - 1;
-
-  strncpy(logState->debugName, pathName, sizeof(logState->debugName));
-  logState->debugName[sizeof(logState->debugName) - 1] = '\0';
-
-  /* identify binary logs */
-  if (!strcmp(pathName + kDevLogLen, "events") || !strcmp(pathName + kDevLogLen, "security")) {
-    logState->isBinary = 1;
-  }
-
-  /* global min priority defaults to "info" level */
-  logState->globalMinPriority = ANDROID_LOG_INFO;
-
-  /*
-   * This is based on the the long-dead utils/Log.cpp code.
-   */
-  const char* tags = getenv("ANDROID_LOG_TAGS");
-  TRACE("Found ANDROID_LOG_TAGS='%s'\n", tags);
-  if (tags != NULL) {
-    int entry = 0;
-
-    while (*tags != '\0') {
-      char tagName[kMaxTagLen];
-      int i, minPrio;
-
-      while (isspace(*tags)) tags++;
-
-      i = 0;
-      while (*tags != '\0' && !isspace(*tags) && *tags != ':' && i < kMaxTagLen) {
-        tagName[i++] = *tags++;
-      }
-      if (i == kMaxTagLen) {
-        TRACE("ERROR: env tag too long (%d chars max)\n", kMaxTagLen - 1);
-        return;
-      }
-      tagName[i] = '\0';
-
-      /* default priority, if there's no ":" part; also zero out '*' */
-      minPrio = ANDROID_LOG_VERBOSE;
-      if (tagName[0] == '*' && tagName[1] == '\0') {
-        minPrio = ANDROID_LOG_DEBUG;
-        tagName[0] = '\0';
-      }
-
-      if (*tags == ':') {
-        tags++;
-        if (*tags >= '0' && *tags <= '9') {
-          if (*tags >= ('0' + ANDROID_LOG_SILENT))
-            minPrio = ANDROID_LOG_VERBOSE;
-          else
-            minPrio = *tags - '\0';
-        } else {
-          switch (*tags) {
-            case 'v':
-              minPrio = ANDROID_LOG_VERBOSE;
-              break;
-            case 'd':
-              minPrio = ANDROID_LOG_DEBUG;
-              break;
-            case 'i':
-              minPrio = ANDROID_LOG_INFO;
-              break;
-            case 'w':
-              minPrio = ANDROID_LOG_WARN;
-              break;
-            case 'e':
-              minPrio = ANDROID_LOG_ERROR;
-              break;
-            case 'f':
-              minPrio = ANDROID_LOG_FATAL;
-              break;
-            case 's':
-              minPrio = ANDROID_LOG_SILENT;
-              break;
-            default:
-              minPrio = ANDROID_LOG_DEFAULT;
-              break;
-          }
-        }
-
-        tags++;
-        if (*tags != '\0' && !isspace(*tags)) {
-          TRACE("ERROR: garbage in tag env; expected whitespace\n");
-          TRACE("       env='%s'\n", tags);
-          return;
-        }
-      }
-
-      if (tagName[0] == 0) {
-        logState->globalMinPriority = minPrio;
-        TRACE("+++ global min prio %d\n", logState->globalMinPriority);
-      } else {
-        logState->tagSet[entry].minPriority = minPrio;
-        strcpy(logState->tagSet[entry].tag, tagName);
-        TRACE("+++ entry %d: %s:%d\n", entry, logState->tagSet[entry].tag,
-              logState->tagSet[entry].minPriority);
-        entry++;
-      }
-    }
-  }
-
-  /*
-   * Taken from the long-dead utils/Log.cpp
-   */
-  const char* fstr = getenv("ANDROID_PRINTF_LOG");
-  LogFormat format;
-  if (fstr == NULL) {
-    format = FORMAT_BRIEF;
-  } else {
-    if (strcmp(fstr, "brief") == 0)
-      format = FORMAT_BRIEF;
-    else if (strcmp(fstr, "process") == 0)
-      format = FORMAT_PROCESS;
-    else if (strcmp(fstr, "tag") == 0)
-      format = FORMAT_PROCESS;
-    else if (strcmp(fstr, "thread") == 0)
-      format = FORMAT_PROCESS;
-    else if (strcmp(fstr, "raw") == 0)
-      format = FORMAT_PROCESS;
-    else if (strcmp(fstr, "time") == 0)
-      format = FORMAT_PROCESS;
-    else if (strcmp(fstr, "long") == 0)
-      format = FORMAT_PROCESS;
-    else
-      format = (LogFormat)atoi(fstr);  // really?!
-  }
-
-  logState->outputFormat = format;
-}
-
-/*
- * Return a human-readable string for the priority level.  Always returns
- * a valid string.
- */
-static const char* getPriorityString(int priority) {
-  /* the first character of each string should be unique */
-  static const char* priorityStrings[] = {"Verbose", "Debug", "Info", "Warn", "Error", "Assert"};
-  int idx;
-
-  idx = (int)priority - (int)ANDROID_LOG_VERBOSE;
-  if (idx < 0 || idx >= (int)(sizeof(priorityStrings) / sizeof(priorityStrings[0])))
-    return "?unknown?";
-  return priorityStrings[idx];
-}
-
-#if defined(_WIN32)
-/*
- * WIN32 does not have writev().
- * Make up something to replace it.
- */
-static ssize_t fake_writev(int fd, const struct iovec* iov, int iovcnt) {
-  ssize_t result = 0;
-  const struct iovec* end = iov + iovcnt;
-  for (; iov < end; iov++) {
-    ssize_t w = write(fd, iov->iov_base, iov->iov_len);
-    if (w != (ssize_t)iov->iov_len) {
-      if (w < 0) return w;
-      return result + w;
-    }
-    result += w;
-  }
-  return result;
-}
-
-#define writev fake_writev
-#endif
-
-/*
- * Write a filtered log message to stderr.
- *
- * Log format parsing taken from the long-dead utils/Log.cpp.
- */
-static void showLog(LogState* state, int logPrio, const char* tag, const char* msg) {
-#if !defined(_WIN32)
-  struct tm tmBuf;
-#endif
-  struct tm* ptm;
-  char timeBuf[32];
-  char prefixBuf[128], suffixBuf[128];
-  char priChar;
-  time_t when;
-#if !defined(_WIN32)
-  pid_t pid, tid;
-#else
-  uint32_t pid, tid;
-#endif
-
-  TRACE("LOG %d: %s %s", logPrio, tag, msg);
-
-  priChar = getPriorityString(logPrio)[0];
-  when = time(NULL);
-  pid = tid = getpid();  // find gettid()?
-
-/*
- * Get the current date/time in pretty form
- *
- * It's often useful when examining a log with "less" to jump to
- * a specific point in the file by searching for the date/time stamp.
- * For this reason it's very annoying to have regexp meta characters
- * in the time stamp.  Don't use forward slashes, parenthesis,
- * brackets, asterisks, or other special chars here.
- */
-#if !defined(_WIN32)
-  ptm = localtime_r(&when, &tmBuf);
-#else
-  ptm = localtime(&when);
-#endif
-  // strftime(timeBuf, sizeof(timeBuf), "%Y-%m-%d %H:%M:%S", ptm);
-  strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm);
-
-  /*
-   * Construct a buffer containing the log header and log message.
-   */
-  size_t prefixLen, suffixLen;
-
-  switch (state->outputFormat) {
-    case FORMAT_TAG:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c/%-8s: ", priChar, tag);
-      strcpy(suffixBuf, "\n");
-      suffixLen = 1;
-      break;
-    case FORMAT_PROCESS:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d) ", priChar, pid);
-      suffixLen = snprintf(suffixBuf, sizeof(suffixBuf), "  (%s)\n", tag);
-      break;
-    case FORMAT_THREAD:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d:%5d) ", priChar, pid, tid);
-      strcpy(suffixBuf, "\n");
-      suffixLen = 1;
-      break;
-    case FORMAT_RAW:
-      prefixBuf[0] = 0;
-      prefixLen = 0;
-      strcpy(suffixBuf, "\n");
-      suffixLen = 1;
-      break;
-    case FORMAT_TIME:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%s %-8s\n\t", timeBuf, tag);
-      strcpy(suffixBuf, "\n");
-      suffixLen = 1;
-      break;
-    case FORMAT_THREADTIME:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%s %5d %5d %c %-8s \n\t", timeBuf, pid,
-                           tid, priChar, tag);
-      strcpy(suffixBuf, "\n");
-      suffixLen = 1;
-      break;
-    case FORMAT_LONG:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "[ %s %5d:%5d %c/%-8s ]\n", timeBuf, pid,
-                           tid, priChar, tag);
-      strcpy(suffixBuf, "\n\n");
-      suffixLen = 2;
-      break;
-    default:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c/%-8s(%5d): ", priChar, tag, pid);
-      strcpy(suffixBuf, "\n");
-      suffixLen = 1;
-      break;
-  }
-
-  /*
-   * Figure out how many lines there will be.
-   */
-  const char* end = msg + strlen(msg);
-  size_t numLines = 0;
-  const char* p = msg;
-  while (p < end) {
-    if (*p++ == '\n') numLines++;
-  }
-  if (p > msg && *(p - 1) != '\n') {
-    numLines++;
-  }
-
-  /*
-   * Create an array of iovecs large enough to write all of
-   * the lines with a prefix and a suffix.
-   */
-  const size_t INLINE_VECS = 64;
-  const size_t MAX_LINES = ((size_t)~0) / (3 * sizeof(struct iovec*));
-  struct iovec stackVec[INLINE_VECS];
-  struct iovec* vec = stackVec;
-  size_t numVecs;
-
-  if (numLines > MAX_LINES) numLines = MAX_LINES;
-
-  numVecs = numLines * 3;  // 3 iovecs per line.
-  if (numVecs > INLINE_VECS) {
-    vec = (struct iovec*)malloc(sizeof(struct iovec) * numVecs);
-    if (vec == NULL) {
-      msg = "LOG: write failed, no memory";
-      numVecs = INLINE_VECS;
-      numLines = numVecs / 3;
-      vec = stackVec;
-    }
-  }
-
-  /*
-   * Fill in the iovec pointers.
-   */
-  p = msg;
-  struct iovec* v = vec;
-  int totalLen = 0;
-  while (numLines > 0 && p < end) {
-    if (prefixLen > 0) {
-      v->iov_base = prefixBuf;
-      v->iov_len = prefixLen;
-      totalLen += prefixLen;
-      v++;
-    }
-    const char* start = p;
-    while (p < end && *p != '\n') {
-      p++;
-    }
-    if ((p - start) > 0) {
-      v->iov_base = (void*)start;
-      v->iov_len = p - start;
-      totalLen += p - start;
-      v++;
-    }
-    if (*p == '\n') p++;
-    if (suffixLen > 0) {
-      v->iov_base = suffixBuf;
-      v->iov_len = suffixLen;
-      totalLen += suffixLen;
-      v++;
-    }
-    numLines -= 1;
-  }
-
-  /*
-   * Write the entire message to the log file with a single writev() call.
-   * We need to use this rather than a collection of printf()s on a FILE*
-   * because of multi-threading and multi-process issues.
-   *
-   * If the file was not opened with O_APPEND, this will produce interleaved
-   * output when called on the same file from multiple processes.
-   *
-   * If the file descriptor is actually a network socket, the writev()
-   * call may return with a partial write.  Putting the writev() call in
-   * a loop can result in interleaved data.  This can be alleviated
-   * somewhat by wrapping the writev call in the Mutex.
-   */
-
-  for (;;) {
-    int cc = writev(fileno(stderr), vec, v - vec);
-
-    if (cc == totalLen) break;
-
-    if (cc < 0) {
-      if (errno == EINTR) continue;
-
-      /* can't really log the failure; for now, throw out a stderr */
-      fprintf(stderr, "+++ LOG: write failed (errno=%d)\n", errno);
-      break;
-    } else {
-      /* shouldn't happen when writing to file or tty */
-      fprintf(stderr, "+++ LOG: write partial (%d of %d)\n", cc, totalLen);
-      break;
-    }
-  }
-
-  /* if we allocated storage for the iovecs, free it */
-  if (vec != stackVec) free(vec);
-}
-
-/*
- * Receive a log message.  We happen to know that "vector" has three parts:
- *
- *  priority (1 byte)
- *  tag (N bytes -- null-terminated ASCII string)
- *  message (N bytes -- null-terminated ASCII string)
- */
-ssize_t fakeLogWritev(int fd, const struct iovec* vector, int count) {
-  LogState* state;
-
-  /* Make sure that no-one frees the LogState while we're using it.
-   * Also guarantees that only one thread is in showLog() at a given
-   * time (if it matters).
-   */
-  lock();
-
-  state = fdToLogState(fd);
-  if (state == NULL) {
-    errno = EBADF;
-    unlock();
-    return -1;
-  }
-
-  if (state->isBinary) {
-    TRACE("%s: ignoring binary log\n", state->debugName);
-    unlock();
-    int len = 0;
-    for (int i = 0; i < count; ++i) {
-      len += vector[i].iov_len;
-    }
-    return len;
-  }
-
-  if (count != 3) {
-    TRACE("%s: writevLog with count=%d not expected\n", state->debugName, count);
-    unlock();
-    return -1;
-  }
-
-  /* pull out the three fields */
-  int logPrio = *(const char*)vector[0].iov_base;
-  const char* tag = (const char*)vector[1].iov_base;
-  const char* msg = (const char*)vector[2].iov_base;
-
-  /* see if this log tag is configured */
-  int i;
-  int minPrio = state->globalMinPriority;
-  for (i = 0; i < kTagSetSize; i++) {
-    if (state->tagSet[i].minPriority == ANDROID_LOG_UNKNOWN)
-      break; /* reached end of configured values */
-
-    if (strcmp(state->tagSet[i].tag, tag) == 0) {
-      minPrio = state->tagSet[i].minPriority;
-      break;
-    }
-  }
-
-  if (logPrio >= minPrio) {
-    showLog(state, logPrio, tag, msg);
-  }
-
-  unlock();
-  int len = 0;
-  for (i = 0; i < count; ++i) {
-    len += vector[i].iov_len;
-  }
-  return len;
-}
-
-/*
- * Free up our state and close the fake descriptor.
- *
- * The logger API has no means or need to 'stop' or 'close' using the logs,
- * and as such, there is no way for that 'stop' or 'close' to translate into
- * a close operation to the fake log handler. fakeLogClose is provided for
- * completeness only.
- *
- * We have no intention of adding a log close operation as it would complicate
- * every user of the logging API with no gain since the only valid place to
- * call is in the exit handler. Logging can continue in the exit handler to
- * help debug HOST tools ...
- */
-int fakeLogClose(int fd) {
-  deleteFakeFd(fd);
-  return 0;
-}
-
-/*
- * Open a log output device and return a fake fd.
- */
-int fakeLogOpen(const char* pathName) {
-  LogState* logState;
-  int fd = -1;
-
-  lock();
-
-  logState = createLogState();
-  if (logState != NULL) {
-    configureInitialState(pathName, logState);
-    fd = logState->fakeFd;
-  } else {
-    errno = ENFILE;
-  }
-
-  unlock();
-
-  return fd;
-}
-
-ssize_t __send_log_msg(char*, size_t) {
-  return -ENODEV;
-}
-
-int __android_log_is_loggable(int prio, const char*, int def) {
-  int logLevel = def;
-  return logLevel >= 0 && prio >= logLevel;
-}
-
-int __android_log_is_loggable_len(int prio, const char*, size_t, int def) {
-  int logLevel = def;
-  return logLevel >= 0 && prio >= logLevel;
-}
-
-int __android_log_is_debuggable() {
-  return 1;
-}
diff --git a/liblog/fake_log_device.h b/liblog/fake_log_device.h
deleted file mode 100644
index ce54db2..0000000
--- a/liblog/fake_log_device.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-
-#include "log_portability.h"
-#include "uio.h"
-
-struct iovec;
-
-__BEGIN_DECLS
-
-int fakeLogOpen(const char* pathName);
-int fakeLogClose(int fd);
-ssize_t fakeLogWritev(int fd, const struct iovec* vector, int count);
-
-ssize_t __send_log_msg(char*, size_t);
-int __android_log_is_loggable(int prio, const char*, int def);
-int __android_log_is_loggable_len(int prio, const char*, size_t, int def);
-int __android_log_is_debuggable();
-
-__END_DECLS
diff --git a/liblog/fake_writer.cpp b/liblog/fake_writer.cpp
deleted file mode 100644
index c0b0e69..0000000
--- a/liblog/fake_writer.cpp
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2007-2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <log/log.h>
-
-#include "config_write.h"
-#include "fake_log_device.h"
-#include "log_portability.h"
-#include "logger.h"
-
-static int fakeOpen();
-static void fakeClose();
-static int fakeWrite(log_id_t log_id, struct timespec* ts, struct iovec* vec, size_t nr);
-
-static int logFds[(int)LOG_ID_MAX] = {-1, -1, -1, -1, -1, -1};
-
-struct android_log_transport_write fakeLoggerWrite = {
-    .node = {&fakeLoggerWrite.node, &fakeLoggerWrite.node},
-    .context.priv = &logFds,
-    .name = "fake",
-    .available = NULL,
-    .open = fakeOpen,
-    .close = fakeClose,
-    .write = fakeWrite,
-};
-
-static int fakeOpen() {
-  int i;
-
-  for (i = 0; i < LOG_ID_MAX; i++) {
-    /*
-     * Known maximum size string, plus an 8 character margin to deal with
-     * possible independent changes to android_log_id_to_name().
-     */
-    char buf[sizeof("/dev/log_security") + 8];
-    if (logFds[i] >= 0) {
-      continue;
-    }
-    snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(static_cast<log_id_t>(i)));
-    logFds[i] = fakeLogOpen(buf);
-    if (logFds[i] < 0) {
-      fprintf(stderr, "fakeLogOpen(%s) failed\n", buf);
-    }
-  }
-  return 0;
-}
-
-static void fakeClose() {
-  int i;
-
-  for (i = 0; i < LOG_ID_MAX; i++) {
-    fakeLogClose(logFds[i]);
-    logFds[i] = -1;
-  }
-}
-
-static int fakeWrite(log_id_t log_id, struct timespec*, struct iovec* vec, size_t nr) {
-  ssize_t ret;
-  size_t i;
-  int logFd, len;
-
-  if (/*(int)log_id >= 0 &&*/ (int)log_id >= (int)LOG_ID_MAX) {
-    return -EINVAL;
-  }
-
-  len = 0;
-  for (i = 0; i < nr; ++i) {
-    len += vec[i].iov_len;
-  }
-
-  if (len > LOGGER_ENTRY_MAX_PAYLOAD) {
-    len = LOGGER_ENTRY_MAX_PAYLOAD;
-  }
-
-  logFd = logFds[(int)log_id];
-  ret = TEMP_FAILURE_RETRY(fakeLogWritev(logFd, vec, nr));
-  if (ret < 0) {
-    ret = -errno;
-  } else if (ret > len) {
-    ret = len;
-  }
-
-  return ret;
-}
diff --git a/liblog/include/android/log.h b/liblog/include/android/log.h
index b2f0ed9..512c7cd 100644
--- a/liblog/include/android/log.h
+++ b/liblog/include/android/log.h
@@ -55,6 +55,13 @@
  */
 
 #include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+#if !defined(__BIONIC__) && !defined(__INTRODUCED_IN)
+#define __INTRODUCED_IN(x)
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -96,20 +103,14 @@
  * [printf(3)](http://man7.org/linux/man-pages/man3/printf.3.html).
  */
 int __android_log_print(int prio, const char* tag, const char* fmt, ...)
-#if defined(__GNUC__)
-    __attribute__((__format__(printf, 3, 4)))
-#endif
-    ;
+    __attribute__((__format__(printf, 3, 4)));
 
 /**
  * Equivalent to `__android_log_print`, but taking a `va_list`.
  * (If `__android_log_print` is like `printf`, this is like `vprintf`.)
  */
 int __android_log_vprint(int prio, const char* tag, const char* fmt, va_list ap)
-#if defined(__GNUC__)
-    __attribute__((__format__(printf, 3, 0)))
-#endif
-    ;
+    __attribute__((__format__(printf, 3, 0)));
 
 /**
  * Writes an assertion failure to the log (as `ANDROID_LOG_FATAL`) and to
@@ -122,20 +123,14 @@
  *
  * Most callers should use
  * [assert(3)](http://man7.org/linux/man-pages/man3/assert.3.html) from
- * `<assert.h>` instead, or the `__assert` and `__assert2` functions provided by
- * bionic if more control is needed. They support automatically including the
- * source filename and line number more conveniently than this function.
+ * `&lt;assert.h&gt;` instead, or the `__assert` and `__assert2` functions
+ * provided by bionic if more control is needed. They support automatically
+ * including the source filename and line number more conveniently than this
+ * function.
  */
-void __android_log_assert(const char* cond, const char* tag, const char* fmt,
-                          ...)
-#if defined(__GNUC__)
-    __attribute__((__noreturn__))
-    __attribute__((__format__(printf, 3, 4)))
-#endif
-    ;
+void __android_log_assert(const char* cond, const char* tag, const char* fmt, ...)
+    __attribute__((__noreturn__)) __attribute__((__format__(printf, 3, 4)));
 
-#ifndef log_id_t_defined
-#define log_id_t_defined
 /**
  * Identifies a specific log buffer for __android_log_buf_write()
  * and __android_log_buf_print().
@@ -160,9 +155,11 @@
   /** The kernel log buffer. */
   LOG_ID_KERNEL = 7,
 
-  LOG_ID_MAX
+  LOG_ID_MAX,
+
+  /** Let the logging function choose the best log target. */
+  LOG_ID_DEFAULT = 0x7FFFFFFF
 } log_id_t;
-#endif
 
 /**
  * Writes the constant string `text` to the log buffer `id`,
@@ -170,8 +167,7 @@
  *
  * Apps should use __android_log_write() instead.
  */
-int __android_log_buf_write(int bufID, int prio, const char* tag,
-                            const char* text);
+int __android_log_buf_write(int bufID, int prio, const char* tag, const char* text);
 
 /**
  * Writes a formatted string to log buffer `id`,
@@ -181,12 +177,171 @@
  *
  * Apps should use __android_log_print() instead.
  */
-int __android_log_buf_print(int bufID, int prio, const char* tag,
-                            const char* fmt, ...)
-#if defined(__GNUC__)
-    __attribute__((__format__(printf, 4, 5)))
+int __android_log_buf_print(int bufID, int prio, const char* tag, const char* fmt, ...)
+    __attribute__((__format__(printf, 4, 5)));
+
+/**
+ * Logger data struct used for writing log messages to liblog via __android_log_write_logger_data()
+ * and sending log messages to user defined loggers specified in __android_log_set_logger().
+ */
+struct __android_log_message {
+  size_t
+      struct_size;   /** Must be set to sizeof(__android_log_message) and is used for versioning. */
+  int32_t buffer_id; /** {@link log_id_t} values. */
+  int32_t priority;  /** {@link android_LogPriority} values. */
+  const char* tag;   /** The tag for the log message. */
+  const char* file;  /** Optional file name, may be set to nullptr. */
+  uint32_t line;     /** Optional line number, ignore if file is nullptr. */
+  const char* message; /** The log message itself. */
+};
+
+/**
+ * Prototype for the 'logger' function that is called for every log message.
+ */
+typedef void (*__android_logger_function)(const struct __android_log_message* log_message);
+/**
+ * Prototype for the 'abort' function that is called when liblog will abort due to
+ * __android_log_assert() failures.
+ */
+typedef void (*__android_aborter_function)(const char* abort_message);
+
+#if !defined(__ANDROID__) || __ANDROID_API__ >= 30
+/**
+ * Writes the log message specified by log_message.  log_message includes additional file name and
+ * line number information that a logger may use.  log_message is versioned for backwards
+ * compatibility.
+ * This assumes that loggability has already been checked through __android_log_is_loggable().
+ * Higher level logging libraries, such as libbase, first check loggability, then format their
+ * buffers, then pass the message to liblog via this function, and therefore we do not want to
+ * duplicate the loggability check here.
+ *
+ * @param log_message the log message itself, see {@link __android_log_message}.
+ *
+ * Available since API level 30.
+ */
+void __android_log_write_log_message(struct __android_log_message* log_message) __INTRODUCED_IN(30);
+
+/**
+ * Sets a user defined logger function.  All log messages sent to liblog will be set to the
+ * function pointer specified by logger for processing.  It is not expected that log messages are
+ * already terminated with a new line.  This function should add new lines if required for line
+ * separation.
+ *
+ * @param logger the new function that will handle log messages.
+ *
+ * Available since API level 30.
+ */
+void __android_log_set_logger(__android_logger_function logger) __INTRODUCED_IN(30);
+
+/**
+ * Writes the log message to logd.  This is an __android_logger_function and can be provided to
+ * __android_log_set_logger().  It is the default logger when running liblog on a device.
+ *
+ * @param log_message the log message to write, see {@link __android_log_message}.
+ *
+ * Available since API level 30.
+ */
+void __android_log_logd_logger(const struct __android_log_message* log_message) __INTRODUCED_IN(30);
+
+/**
+ * Writes the log message to stderr.  This is an __android_logger_function and can be provided to
+ * __android_log_set_logger().  It is the default logger when running liblog on host.
+ *
+ * @param log_message the log message to write, see {@link __android_log_message}.
+ *
+ * Available since API level 30.
+ */
+void __android_log_stderr_logger(const struct __android_log_message* log_message)
+    __INTRODUCED_IN(30);
+
+/**
+ * Sets a user defined aborter function that is called for __android_log_assert() failures.  This
+ * user defined aborter function is highly recommended to abort and be noreturn, but is not strictly
+ * required to.
+ *
+ * @param aborter the new aborter function, see {@link __android_aborter_function}.
+ *
+ * Available since API level 30.
+ */
+void __android_log_set_aborter(__android_aborter_function aborter) __INTRODUCED_IN(30);
+
+/**
+ * Calls the stored aborter function.  This allows for other logging libraries to use the same
+ * aborter function by calling this function in liblog.
+ *
+ * @param abort_message an additional message supplied when aborting, for example this is used to
+ *                      call android_set_abort_message() in __android_log_default_aborter().
+ *
+ * Available since API level 30.
+ */
+void __android_log_call_aborter(const char* abort_message) __INTRODUCED_IN(30);
+
+/**
+ * Sets android_set_abort_message() on device then aborts().  This is the default aborter.
+ *
+ * @param abort_message an additional message supplied when aborting.  This functions calls
+ *                      android_set_abort_message() with its contents.
+ *
+ * Available since API level 30.
+ */
+void __android_log_default_aborter(const char* abort_message) __attribute__((noreturn))
+__INTRODUCED_IN(30);
+
+/**
+ * Use the per-tag properties "log.tag.<tagname>" along with the minimum priority from
+ * __android_log_set_minimum_priority() to determine if a log message with a given prio and tag will
+ * be printed.  A non-zero result indicates yes, zero indicates false.
+ *
+ * If both a priority for a tag and a minimum priority are set by
+ * __android_log_set_minimum_priority(), then the lowest of the two values are to determine the
+ * minimum priority needed to log.  If only one is set, then that value is used to determine the
+ * minimum priority needed.  If none are set, then default_priority is used.
+ *
+ * @param prio         the priority to test, takes {@link android_LogPriority} values.
+ * @param tag          the tag to test.
+ * @param len          the length of the tag.
+ * @param default_prio the default priority to use if no properties or minimum priority are set.
+ * @return an integer where 1 indicates that the message is loggable and 0 indicates that it is not.
+ *
+ * Available since API level 30.
+ */
+int __android_log_is_loggable(int prio, const char* tag, int default_prio) __INTRODUCED_IN(30);
+int __android_log_is_loggable_len(int prio, const char* tag, size_t len, int default_prio)
+    __INTRODUCED_IN(30);
+
+/**
+ * Sets the minimum priority that will be logged for this process.
+ *
+ * @param priority the new minimum priority to set, takes @{link android_LogPriority} values.
+ * @return the previous set minimum priority as @{link android_LogPriority} values, or
+ *         ANDROID_LOG_DEFAULT if none was set.
+ *
+ * Available since API level 30.
+ */
+int32_t __android_log_set_minimum_priority(int32_t priority) __INTRODUCED_IN(30);
+
+/**
+ * Gets the minimum priority that will be logged for this process.  If none has been set by a
+ * previous __android_log_set_minimum_priority() call, this returns ANDROID_LOG_DEFAULT.
+ *
+ * @return the current minimum priority as @{link android_LogPriority} values, or
+ *         ANDROID_LOG_DEFAULT if none is set.
+ *
+ * Available since API level 30.
+ */
+int32_t __android_log_get_minimum_priority(void) __INTRODUCED_IN(30);
+
+/**
+ * Sets the default tag if no tag is provided when writing a log message.  Defaults to
+ * getprogname().  This truncates tag to the maximum log message size, though appropriate tags
+ * should be much smaller.
+ *
+ * @param tag the new log tag.
+ *
+ * Available since API level 30.
+ */
+void __android_log_set_default_tag(const char* tag) __INTRODUCED_IN(30);
 #endif
-    ;
 
 #ifdef __cplusplus
 }
diff --git a/liblog/include/log/event_tag_map.h b/liblog/include/log/event_tag_map.h
index 2687b3a..f7ec208 100644
--- a/liblog/include/log/event_tag_map.h
+++ b/liblog/include/log/event_tag_map.h
@@ -16,6 +16,8 @@
 
 #pragma once
 
+#include <stddef.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/liblog/include/log/log.h b/liblog/include/log/log.h
index 5928649..c116add 100644
--- a/liblog/include/log/log.h
+++ b/liblog/include/log/log.h
@@ -22,7 +22,6 @@
 #endif
 #include <stdint.h> /* uint16_t, int32_t */
 #include <stdio.h>
-#include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 
@@ -65,21 +64,6 @@
 #endif
 #endif
 
-/* --------------------------------------------------------------------- */
-
-/*
- * This file uses ", ## __VA_ARGS__" zero-argument token pasting to
- * work around issues with debug-only syntax errors in assertions
- * that are missing format strings.  See commit
- * 19299904343daf191267564fe32e6cd5c165cd42
- */
-#if defined(__clang__)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
-#endif
-
-/* --------------------------------------------------------------------- */
-
 /*
  * Event logging.
  */
@@ -159,15 +143,14 @@
 /*
  * Release any logger resources (a new log write will immediately re-acquire)
  *
- * May be used to clean up File descriptors after a Fork, the resources are
- * all O_CLOEXEC so wil self clean on exec().
+ * This is specifically meant to be used by Zygote to close open file descriptors after fork()
+ * and before specialization.  O_CLOEXEC is used on file descriptors, so they will be closed upon
+ * exec() in normal use cases.
+ *
+ * Note that this is not safe to call from a multi-threaded program.
  */
 void __android_log_close(void);
 
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/liblog/include/log/log_event_list.h b/liblog/include/log/log_event_list.h
index 636d417..deadf20 100644
--- a/liblog/include/log/log_event_list.h
+++ b/liblog/include/log/log_event_list.h
@@ -36,16 +36,11 @@
 /*
  * The opaque context used to manipulate lists of events.
  */
-#ifndef __android_log_context_defined
-#define __android_log_context_defined
 typedef struct android_log_context_internal* android_log_context;
-#endif
 
 /*
  * Elements returned when reading a list of events.
  */
-#ifndef __android_log_list_element_defined
-#define __android_log_list_element_defined
 typedef struct {
   AndroidEventLogType type;
   uint16_t complete;
@@ -57,7 +52,6 @@
     float float32;
   } data;
 } android_log_list_element;
-#endif
 
 /*
  * Creates a context associated with an event tag to write elements to
@@ -104,8 +98,6 @@
 int android_log_destroy(android_log_context* ctx);
 
 #ifdef __cplusplus
-#ifndef __class_android_log_event_list_defined
-#define __class_android_log_event_list_defined
 /* android_log_list C++ helpers */
 extern "C++" {
 class android_log_event_list {
@@ -280,7 +272,6 @@
 };
 }
 #endif
-#endif
 
 #ifdef __cplusplus
 }
diff --git a/liblog/include/log/log_id.h b/liblog/include/log/log_id.h
index c052a50..c8fafe7 100644
--- a/liblog/include/log/log_id.h
+++ b/liblog/include/log/log_id.h
@@ -16,41 +16,19 @@
 
 #pragma once
 
+#include <android/log.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#ifndef log_id_t_defined
-#define log_id_t_defined
-typedef enum log_id {
-  LOG_ID_MIN = 0,
-
-  LOG_ID_MAIN = 0,
-  LOG_ID_RADIO = 1,
-  LOG_ID_EVENTS = 2,
-  LOG_ID_SYSTEM = 3,
-  LOG_ID_CRASH = 4,
-  LOG_ID_STATS = 5,
-  LOG_ID_SECURITY = 6,
-  LOG_ID_KERNEL = 7, /* place last, third-parties can not use it */
-
-  LOG_ID_MAX
-} log_id_t;
-#endif
-#define sizeof_log_id_t sizeof(typeof_log_id_t)
-#define typeof_log_id_t unsigned char
-
 /*
  * Send a simple string to the log.
  */
 int __android_log_buf_write(int bufID, int prio, const char* tag,
                             const char* text);
-int __android_log_buf_print(int bufID, int prio, const char* tag,
-                            const char* fmt, ...)
-#if defined(__GNUC__)
-    __attribute__((__format__(printf, 4, 5)))
-#endif
-    ;
+int __android_log_buf_print(int bufID, int prio, const char* tag, const char* fmt, ...)
+    __attribute__((__format__(printf, 4, 5)));
 
 /*
  * log_id_t helpers
diff --git a/liblog/include/log/log_main.h b/liblog/include/log/log_main.h
index 64791c2..1bd1c8a 100644
--- a/liblog/include/log/log_main.h
+++ b/liblog/include/log/log_main.h
@@ -56,7 +56,7 @@
 /*
  * Use __VA_ARGS__ if running a static analyzer,
  * to avoid warnings of unused variables in __VA_ARGS__.
- * Use contexpr function in C++ mode, so these macros can be used
+ * Use constexpr function in C++ mode, so these macros can be used
  * in other constexpr functions without warning.
  */
 #ifdef __clang_analyzer__
@@ -131,10 +131,10 @@
  * is -inverted- from the normal assert() semantics.
  */
 #ifndef LOG_ALWAYS_FATAL_IF
-#define LOG_ALWAYS_FATAL_IF(cond, ...)                              \
-  ((__predict_false(cond))                                          \
-       ? ((void)android_printAssert(#cond, LOG_TAG, ##__VA_ARGS__)) \
-       : __FAKE_USE_VA_ARGS(__VA_ARGS__))
+#define LOG_ALWAYS_FATAL_IF(cond, ...)                                                    \
+  ((__predict_false(cond)) ? (__FAKE_USE_VA_ARGS(__VA_ARGS__),                            \
+                              ((void)android_printAssert(#cond, LOG_TAG, ##__VA_ARGS__))) \
+                           : ((void)0))
 #endif
 
 #ifndef LOG_ALWAYS_FATAL
@@ -213,9 +213,10 @@
 #if LOG_NDEBUG
 #define ALOGV_IF(cond, ...) __FAKE_USE_VA_ARGS(__VA_ARGS__)
 #else
-#define ALOGV_IF(cond, ...)                                                  \
-  ((__predict_false(cond)) ? ((void)ALOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__)) \
-                           : __FAKE_USE_VA_ARGS(__VA_ARGS__))
+#define ALOGV_IF(cond, ...)                                                               \
+  ((__predict_false(cond))                                                                \
+       ? (__FAKE_USE_VA_ARGS(__VA_ARGS__), (void)ALOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__)) \
+       : ((void)0))
 #endif
 #endif
 
@@ -227,9 +228,10 @@
 #endif
 
 #ifndef ALOGD_IF
-#define ALOGD_IF(cond, ...)                                                \
-  ((__predict_false(cond)) ? ((void)ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)) \
-                           : __FAKE_USE_VA_ARGS(__VA_ARGS__))
+#define ALOGD_IF(cond, ...)                                                             \
+  ((__predict_false(cond))                                                              \
+       ? (__FAKE_USE_VA_ARGS(__VA_ARGS__), (void)ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)) \
+       : ((void)0))
 #endif
 
 /*
@@ -240,9 +242,10 @@
 #endif
 
 #ifndef ALOGI_IF
-#define ALOGI_IF(cond, ...)                                               \
-  ((__predict_false(cond)) ? ((void)ALOG(LOG_INFO, LOG_TAG, __VA_ARGS__)) \
-                           : __FAKE_USE_VA_ARGS(__VA_ARGS__))
+#define ALOGI_IF(cond, ...)                                                            \
+  ((__predict_false(cond))                                                             \
+       ? (__FAKE_USE_VA_ARGS(__VA_ARGS__), (void)ALOG(LOG_INFO, LOG_TAG, __VA_ARGS__)) \
+       : ((void)0))
 #endif
 
 /*
@@ -253,9 +256,10 @@
 #endif
 
 #ifndef ALOGW_IF
-#define ALOGW_IF(cond, ...)                                               \
-  ((__predict_false(cond)) ? ((void)ALOG(LOG_WARN, LOG_TAG, __VA_ARGS__)) \
-                           : __FAKE_USE_VA_ARGS(__VA_ARGS__))
+#define ALOGW_IF(cond, ...)                                                            \
+  ((__predict_false(cond))                                                             \
+       ? (__FAKE_USE_VA_ARGS(__VA_ARGS__), (void)ALOG(LOG_WARN, LOG_TAG, __VA_ARGS__)) \
+       : ((void)0))
 #endif
 
 /*
@@ -266,9 +270,10 @@
 #endif
 
 #ifndef ALOGE_IF
-#define ALOGE_IF(cond, ...)                                                \
-  ((__predict_false(cond)) ? ((void)ALOG(LOG_ERROR, LOG_TAG, __VA_ARGS__)) \
-                           : __FAKE_USE_VA_ARGS(__VA_ARGS__))
+#define ALOGE_IF(cond, ...)                                                             \
+  ((__predict_false(cond))                                                              \
+       ? (__FAKE_USE_VA_ARGS(__VA_ARGS__), (void)ALOG(LOG_ERROR, LOG_TAG, __VA_ARGS__)) \
+       : ((void)0))
 #endif
 
 /* --------------------------------------------------------------------- */
diff --git a/liblog/include/log/log_read.h b/liblog/include/log/log_read.h
index fdef306..f9c1d69 100644
--- a/liblog/include/log/log_read.h
+++ b/liblog/include/log/log_read.h
@@ -48,76 +48,16 @@
  * access to raw information, or parsing is an issue.
  */
 
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wzero-length-array"
-/*
- * The userspace structure for version 1 of the logger_entry ABI.
- */
-#ifndef __struct_logger_entry_defined
-#define __struct_logger_entry_defined
 struct logger_entry {
-  uint16_t len;   /* length of the payload */
-  uint16_t __pad; /* no matter what, we get 2 bytes of padding */
-  int32_t pid;    /* generating process's pid */
-  int32_t tid;    /* generating process's tid */
-  int32_t sec;    /* seconds since Epoch */
-  int32_t nsec;   /* nanoseconds */
-  char msg[0]; /* the entry's payload */
-};
-#endif
-
-/*
- * The userspace structure for version 2 of the logger_entry ABI.
- */
-#ifndef __struct_logger_entry_v2_defined
-#define __struct_logger_entry_v2_defined
-struct logger_entry_v2 {
   uint16_t len;      /* length of the payload */
-  uint16_t hdr_size; /* sizeof(struct logger_entry_v2) */
-  int32_t pid;       /* generating process's pid */
-  int32_t tid;       /* generating process's tid */
-  int32_t sec;       /* seconds since Epoch */
-  int32_t nsec;      /* nanoseconds */
-  uint32_t euid;     /* effective UID of logger */
-  char msg[0]; /* the entry's payload */
-} __attribute__((__packed__));
-#endif
-
-/*
- * The userspace structure for version 3 of the logger_entry ABI.
- */
-#ifndef __struct_logger_entry_v3_defined
-#define __struct_logger_entry_v3_defined
-struct logger_entry_v3 {
-  uint16_t len;      /* length of the payload */
-  uint16_t hdr_size; /* sizeof(struct logger_entry_v3) */
-  int32_t pid;       /* generating process's pid */
-  int32_t tid;       /* generating process's tid */
-  int32_t sec;       /* seconds since Epoch */
-  int32_t nsec;      /* nanoseconds */
-  uint32_t lid;      /* log id of the payload */
-  char msg[0]; /* the entry's payload */
-} __attribute__((__packed__));
-#endif
-
-/*
- * The userspace structure for version 4 of the logger_entry ABI.
- */
-#ifndef __struct_logger_entry_v4_defined
-#define __struct_logger_entry_v4_defined
-struct logger_entry_v4 {
-  uint16_t len;      /* length of the payload */
-  uint16_t hdr_size; /* sizeof(struct logger_entry_v4) */
+  uint16_t hdr_size; /* sizeof(struct logger_entry) */
   int32_t pid;       /* generating process's pid */
   uint32_t tid;      /* generating process's tid */
   uint32_t sec;      /* seconds since Epoch */
   uint32_t nsec;     /* nanoseconds */
   uint32_t lid;      /* log id of the payload, bottom 4 bits currently */
   uint32_t uid;      /* generating process's uid */
-  char msg[0]; /* the entry's payload */
 };
-#endif
-#pragma clang diagnostic pop
 
 /*
  * The maximum size of the log entry payload that can be
@@ -133,16 +73,10 @@
  */
 #define LOGGER_ENTRY_MAX_LEN (5 * 1024)
 
-#ifndef __struct_log_msg_defined
-#define __struct_log_msg_defined
 struct log_msg {
   union {
     unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1];
-    struct logger_entry_v4 entry;
-    struct logger_entry_v4 entry_v4;
-    struct logger_entry_v3 entry_v3;
-    struct logger_entry_v2 entry_v2;
-    struct logger_entry entry_v1;
+    struct logger_entry entry;
   } __attribute__((aligned(4)));
 #ifdef __cplusplus
   /* Matching log_time operators */
@@ -176,22 +110,14 @@
   }
   char* msg() {
     unsigned short hdr_size = entry.hdr_size;
-    if (!hdr_size) {
-      hdr_size = sizeof(entry_v1);
-    }
-    if ((hdr_size < sizeof(entry_v1)) || (hdr_size > sizeof(entry))) {
+    if (hdr_size >= sizeof(struct log_msg) - sizeof(entry)) {
       return nullptr;
     }
     return reinterpret_cast<char*>(buf) + hdr_size;
   }
-  unsigned int len() {
-    return (entry.hdr_size ? entry.hdr_size
-                           : static_cast<uint16_t>(sizeof(entry_v1))) +
-           entry.len;
-  }
+  unsigned int len() { return entry.hdr_size + entry.len; }
 #endif
 };
-#endif
 
 struct logger;
 
@@ -209,8 +135,7 @@
                                       char* buf, size_t len);
 ssize_t android_logger_get_prune_list(struct logger_list* logger_list,
                                       char* buf, size_t len);
-int android_logger_set_prune_list(struct logger_list* logger_list, char* buf,
-                                  size_t len);
+int android_logger_set_prune_list(struct logger_list* logger_list, const char* buf, size_t len);
 
 #define ANDROID_LOG_RDONLY O_RDONLY
 #define ANDROID_LOG_WRONLY O_WRONLY
diff --git a/liblog/include/log/log_time.h b/liblog/include/log/log_time.h
index 09c9910..6b4458c 100644
--- a/liblog/include/log/log_time.h
+++ b/liblog/include/log/log_time.h
@@ -24,9 +24,6 @@
 #define US_PER_SEC 1000000ULL
 #define MS_PER_SEC 1000ULL
 
-#ifndef __struct_log_time_defined
-#define __struct_log_time_defined
-
 #define LOG_TIME_SEC(t) ((t)->tv_sec)
 /* next power of two after NS_PER_SEC */
 #define LOG_TIME_NSEC(t) ((t)->tv_nsec & (UINT32_MAX >> 2))
@@ -35,11 +32,6 @@
 
 extern "C" {
 
-/*
- * NB: we did NOT define a copy constructor. This will result in structure
- * no longer being compatible with pass-by-value which is desired
- * efficient behavior. Also, pass-by-reference breaks C/C++ ABI.
- */
 struct log_time {
  public:
   uint32_t tv_sec = 0; /* good to Feb 5 2106 */
@@ -169,5 +161,3 @@
 } __attribute__((__packed__)) log_time;
 
 #endif /* __cplusplus */
-
-#endif /* __struct_log_time_defined */
diff --git a/liblog/include/log/log_transport.h b/liblog/include/log/log_transport.h
deleted file mode 100644
index b48761a..0000000
--- a/liblog/include/log/log_transport.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
-**
-** Copyright 2017, The Android Open Source Project
-**
-** This file is dual licensed.  It may be redistributed and/or modified
-** under the terms of the Apache 2.0 License OR version 2 of the GNU
-** General Public License.
-*/
-
-#pragma once
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Logging transports, bit mask to select features. Function returns selection.
- */
-/* clang-format off */
-#define LOGGER_DEFAULT 0x00
-#define LOGGER_LOGD    0x01
-#define LOGGER_KERNEL  0x02 /* Reserved/Deprecated */
-#define LOGGER_NULL    0x04 /* Does not release resources of other selections */
-#define LOGGER_RESERVED 0x08 /* Reserved, previously for logging to local memory */
-#define LOGGER_STDERR  0x10 /* logs sent to stderr */
-/* clang-format on */
-
-/* Both return the selected transport flag mask, or negative errno */
-int android_set_log_transport(int transport_flag);
-int android_get_log_transport();
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/liblog/include/log/logprint.h b/liblog/include/log/logprint.h
index 8f4b187..7dfd914 100644
--- a/liblog/include/log/logprint.h
+++ b/liblog/include/log/logprint.h
@@ -16,7 +16,8 @@
 
 #pragma once
 
-#include <pthread.h>
+#include <stdint.h>
+#include <sys/types.h>
 
 #include <android/log.h>
 #include <log/event_tag_map.h>
diff --git a/liblog/include/private/android_logger.h b/liblog/include/private/android_logger.h
index 5e04148..d3b72bc 100644
--- a/liblog/include/private/android_logger.h
+++ b/liblog/include/private/android_logger.h
@@ -47,7 +47,7 @@
 
 /* Header Structure to logd, and second header for pstore */
 typedef struct __attribute__((__packed__)) {
-  typeof_log_id_t id;
+  uint8_t id;
   uint16_t tid;
   log_time realtime;
 } android_log_header_t;
@@ -57,6 +57,18 @@
   int32_t tag;  // Little Endian Order
 } android_event_header_t;
 
+// Event payload EVENT_TYPE_LIST
+typedef struct __attribute__((__packed__)) {
+  int8_t type;  // EVENT_TYPE_LIST
+  int8_t element_count;
+} android_event_list_t;
+
+// Event payload EVENT_TYPE_FLOAT
+typedef struct __attribute__((__packed__)) {
+  int8_t type;  // EVENT_TYPE_FLOAT
+  float data;
+} android_event_float_t;
+
 /* Event payload EVENT_TYPE_INT */
 typedef struct __attribute__((__packed__)) {
   int8_t type;   // EVENT_TYPE_INT
diff --git a/liblog/liblog.map.txt b/liblog/liblog.map.txt
index ce4c53c..6ca1a16 100644
--- a/liblog/liblog.map.txt
+++ b/liblog/liblog.map.txt
@@ -1,7 +1,7 @@
 LIBLOG {
   global:
-    android_name_to_log_id; # vndk
-    android_log_id_to_name; # vndk
+    android_name_to_log_id; # llndk
+    android_log_id_to_name; # llndk
     __android_log_assert;
     __android_log_buf_print;
     __android_log_buf_write;
@@ -14,62 +14,76 @@
 
 LIBLOG_L {
   global:
-    android_logger_clear; # vndk
-    android_logger_get_id; # vndk
-    android_logger_get_log_readable_size; # vndk
-    android_logger_get_log_version; # vndk
-    android_logger_get_log_size; # vndk
-    android_logger_list_alloc; # apex vndk
-    android_logger_list_alloc_time; # apex vndk
-    android_logger_list_free; # apex vndk
-    android_logger_list_open; # vndk
-    android_logger_list_read; # apex vndk
-    android_logger_open; # apex vndk
-    android_logger_set_log_size; # vndk
+    android_logger_clear; # llndk
+    android_logger_get_id; # llndk
+    android_logger_get_log_readable_size; # llndk
+    android_logger_get_log_version; # llndk
+    android_logger_get_log_size; # llndk
+    android_logger_list_alloc; # apex llndk
+    android_logger_list_alloc_time; # apex llndk
+    android_logger_list_free; # apex llndk
+    android_logger_list_open; # llndk
+    android_logger_list_read; # apex llndk
+    android_logger_open; # apex llndk
+    android_logger_set_log_size; # llndk
 };
 
 LIBLOG_M {
   global:
-    android_logger_get_prune_list; # vndk
-    android_logger_set_prune_list; # vndk
-    android_logger_get_statistics; # vndk
-    __android_log_error_write; # apex vndk
+    android_logger_get_prune_list; # llndk
+    android_logger_set_prune_list; # llndk
+    android_logger_get_statistics; # llndk
+    __android_log_error_write; # apex llndk
     __android_log_is_loggable;
-    create_android_logger; # apex vndk
-    android_log_destroy; # apex vndk
-    android_log_write_list_begin; # apex vndk
-    android_log_write_list_end; # apex vndk
-    android_log_write_int32; # apex vndk
-    android_log_write_int64; # apex vndk
-    android_log_write_string8; # apex vndk
-    android_log_write_string8_len; # apex vndk
-    android_log_write_float32; # apex vndk
-    android_log_write_list; # apex vndk
+    create_android_logger; # apex llndk
+    android_log_destroy; # apex llndk
+    android_log_write_list_begin; # apex llndk
+    android_log_write_list_end; # apex llndk
+    android_log_write_int32; # apex llndk
+    android_log_write_int64; # apex llndk
+    android_log_write_string8; # apex llndk
+    android_log_write_string8_len; # apex llndk
+    android_log_write_float32; # apex llndk
+    android_log_write_list; # apex llndk
 
 };
 
 LIBLOG_O {
   global:
     __android_log_is_loggable_len;
-    __android_log_is_debuggable; # vndk
+    __android_log_is_debuggable; # apex llndk
 };
 
-LIBLOG_Q {
+LIBLOG_Q { # introduced=29
   global:
     __android_log_bswrite; # apex
     __android_log_btwrite; # apex
     __android_log_bwrite; # apex
     __android_log_close; # apex
     __android_log_security; # apex
-    android_log_reset; #vndk
-    android_log_parser_reset; #vndk
+    android_log_reset; # llndk
+    android_log_parser_reset; # llndk
+};
+
+LIBLOG_R { # introduced=30
+  global:
+    __android_log_call_aborter;
+    __android_log_default_aborter;
+    __android_log_get_minimum_priority;
+    __android_log_logd_logger;
+    __android_log_security_bswrite; # apex
+    __android_log_set_aborter;
+    __android_log_set_default_tag;
+    __android_log_set_logger;
+    __android_log_set_minimum_priority;
+    __android_log_stderr_logger;
+    __android_log_write_log_message;
 };
 
 LIBLOG_PRIVATE {
   global:
     __android_log_pmsg_file_read;
     __android_log_pmsg_file_write;
-    __android_log_security_bswrite;
     __android_logger_get_buffer_size;
     __android_logger_property_get_bool;
     android_openEventTagMap;
diff --git a/liblog/log_event_list.cpp b/liblog/log_event_list.cpp
index b1b527c..cb70d48 100644
--- a/liblog/log_event_list.cpp
+++ b/liblog/log_event_list.cpp
@@ -25,8 +25,6 @@
 #include <log/log_event_list.h>
 #include <private/android_logger.h>
 
-#include "log_portability.h"
-
 #define MAX_EVENT_PAYLOAD (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(int32_t))
 
 enum ReadWriteFlag {
@@ -47,15 +45,10 @@
   uint8_t storage[LOGGER_ENTRY_MAX_PAYLOAD];
 };
 
-// TODO(tomcherry): real C++ structs.
-typedef struct android_log_context_internal android_log_context_internal;
-
 static void init_context(android_log_context_internal* context, uint32_t tag) {
-  size_t needed;
-
   context->tag = tag;
   context->read_write_flag = kAndroidLoggerWrite;
-  needed = sizeof(uint8_t) + sizeof(uint8_t);
+  size_t needed = sizeof(android_event_list_t);
   if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
     context->overflow = true;
   }
@@ -88,7 +81,6 @@
 
 android_log_context create_android_log_parser(const char* msg, size_t len) {
   android_log_context_internal* context;
-  size_t i;
 
   context =
       static_cast<android_log_context_internal*>(calloc(1, sizeof(android_log_context_internal)));
@@ -113,11 +105,9 @@
   return 0;
 }
 
-int android_log_reset(android_log_context ctx) {
-  android_log_context_internal* context;
+int android_log_reset(android_log_context context) {
   uint32_t tag;
 
-  context = (android_log_context_internal*)ctx;
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
@@ -129,10 +119,7 @@
   return 0;
 }
 
-int android_log_parser_reset(android_log_context ctx, const char* msg, size_t len) {
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_parser_reset(android_log_context context, const char* msg, size_t len) {
   if (!context || (kAndroidLoggerRead != context->read_write_flag)) {
     return -EBADF;
   }
@@ -143,11 +130,7 @@
   return 0;
 }
 
-int android_log_write_list_begin(android_log_context ctx) {
-  size_t needed;
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_write_list_begin(android_log_context context) {
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
@@ -155,7 +138,7 @@
     context->overflow = true;
     return -EOVERFLOW;
   }
-  needed = sizeof(uint8_t) + sizeof(uint8_t);
+  size_t needed = sizeof(android_event_list_t);
   if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
     context->overflow = true;
     return -EIO;
@@ -169,84 +152,56 @@
   if (context->overflow) {
     return -EIO;
   }
-  context->storage[context->pos + 0] = EVENT_TYPE_LIST;
-  context->storage[context->pos + 1] = 0;
+  auto* event_list = reinterpret_cast<android_event_list_t*>(&context->storage[context->pos]);
+  event_list->type = EVENT_TYPE_LIST;
+  event_list->element_count = 0;
   context->list[context->list_nest_depth] = context->pos + 1;
   context->count[context->list_nest_depth] = 0;
   context->pos += needed;
   return 0;
 }
 
-static inline void copy4LE(uint8_t* buf, uint32_t val) {
-  buf[0] = val & 0xFF;
-  buf[1] = (val >> 8) & 0xFF;
-  buf[2] = (val >> 16) & 0xFF;
-  buf[3] = (val >> 24) & 0xFF;
-}
-
-int android_log_write_int32(android_log_context ctx, int32_t value) {
-  size_t needed;
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_write_int32(android_log_context context, int32_t value) {
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
   if (context->overflow) {
     return -EIO;
   }
-  needed = sizeof(uint8_t) + sizeof(value);
+  size_t needed = sizeof(android_event_int_t);
   if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
     context->overflow = true;
     return -EIO;
   }
   context->count[context->list_nest_depth]++;
-  context->storage[context->pos + 0] = EVENT_TYPE_INT;
-  copy4LE(&context->storage[context->pos + 1], value);
+  auto* event_int = reinterpret_cast<android_event_int_t*>(&context->storage[context->pos]);
+  event_int->type = EVENT_TYPE_INT;
+  event_int->data = value;
   context->pos += needed;
   return 0;
 }
 
-static inline void copy8LE(uint8_t* buf, uint64_t val) {
-  buf[0] = val & 0xFF;
-  buf[1] = (val >> 8) & 0xFF;
-  buf[2] = (val >> 16) & 0xFF;
-  buf[3] = (val >> 24) & 0xFF;
-  buf[4] = (val >> 32) & 0xFF;
-  buf[5] = (val >> 40) & 0xFF;
-  buf[6] = (val >> 48) & 0xFF;
-  buf[7] = (val >> 56) & 0xFF;
-}
-
-int android_log_write_int64(android_log_context ctx, int64_t value) {
-  size_t needed;
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_write_int64(android_log_context context, int64_t value) {
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
   if (context->overflow) {
     return -EIO;
   }
-  needed = sizeof(uint8_t) + sizeof(value);
+  size_t needed = sizeof(android_event_long_t);
   if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
     context->overflow = true;
     return -EIO;
   }
   context->count[context->list_nest_depth]++;
-  context->storage[context->pos + 0] = EVENT_TYPE_LONG;
-  copy8LE(&context->storage[context->pos + 1], value);
+  auto* event_long = reinterpret_cast<android_event_long_t*>(&context->storage[context->pos]);
+  event_long->type = EVENT_TYPE_LONG;
+  event_long->data = value;
   context->pos += needed;
   return 0;
 }
 
-int android_log_write_string8_len(android_log_context ctx, const char* value, size_t maxlen) {
-  size_t needed;
-  ssize_t len;
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_write_string8_len(android_log_context context, const char* value, size_t maxlen) {
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
@@ -256,8 +211,8 @@
   if (!value) {
     value = "";
   }
-  len = strnlen(value, maxlen);
-  needed = sizeof(uint8_t) + sizeof(int32_t) + len;
+  int32_t len = strnlen(value, maxlen);
+  size_t needed = sizeof(android_event_string_t) + len;
   if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
     /* Truncate string for delivery */
     len = MAX_EVENT_PAYLOAD - context->pos - 1 - sizeof(int32_t);
@@ -267,10 +222,11 @@
     }
   }
   context->count[context->list_nest_depth]++;
-  context->storage[context->pos + 0] = EVENT_TYPE_STRING;
-  copy4LE(&context->storage[context->pos + 1], len);
+  auto* event_string = reinterpret_cast<android_event_string_t*>(&context->storage[context->pos]);
+  event_string->type = EVENT_TYPE_STRING;
+  event_string->length = len;
   if (len) {
-    memcpy(&context->storage[context->pos + 5], value, len);
+    memcpy(&event_string->data, value, len);
   }
   context->pos += needed;
   return len;
@@ -280,35 +236,27 @@
   return android_log_write_string8_len(ctx, value, MAX_EVENT_PAYLOAD);
 }
 
-int android_log_write_float32(android_log_context ctx, float value) {
-  size_t needed;
-  uint32_t ivalue;
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_write_float32(android_log_context context, float value) {
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
   if (context->overflow) {
     return -EIO;
   }
-  needed = sizeof(uint8_t) + sizeof(ivalue);
+  size_t needed = sizeof(android_event_float_t);
   if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
     context->overflow = true;
     return -EIO;
   }
-  ivalue = *(uint32_t*)&value;
   context->count[context->list_nest_depth]++;
-  context->storage[context->pos + 0] = EVENT_TYPE_FLOAT;
-  copy4LE(&context->storage[context->pos + 1], ivalue);
+  auto* event_float = reinterpret_cast<android_event_float_t*>(&context->storage[context->pos]);
+  event_float->type = EVENT_TYPE_FLOAT;
+  event_float->data = value;
   context->pos += needed;
   return 0;
 }
 
-int android_log_write_list_end(android_log_context ctx) {
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
+int android_log_write_list_end(android_log_context context) {
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
@@ -335,8 +283,7 @@
 /*
  * Logs the list of elements to the event log.
  */
-int android_log_write_list(android_log_context ctx, log_id_t id) {
-  android_log_context_internal* context;
+int android_log_write_list(android_log_context context, log_id_t id) {
   const char* msg;
   ssize_t len;
 
@@ -344,7 +291,6 @@
     return -EINVAL;
   }
 
-  context = (android_log_context_internal*)ctx;
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
@@ -369,12 +315,10 @@
                                      : __android_log_security_bwrite(context->tag, msg, len));
 }
 
-int android_log_write_list_buffer(android_log_context ctx, const char** buffer) {
-  android_log_context_internal* context;
+int android_log_write_list_buffer(android_log_context context, const char** buffer) {
   const char* msg;
   ssize_t len;
 
-  context = (android_log_context_internal*)ctx;
   if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
     return -EBADF;
   }
@@ -401,34 +345,16 @@
 }
 
 /*
- * Extract a 4-byte value from a byte stream.
- */
-static inline uint32_t get4LE(const uint8_t* src) {
-  return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-}
-
-/*
- * Extract an 8-byte value from a byte stream.
- */
-static inline uint64_t get8LE(const uint8_t* src) {
-  uint32_t low = src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-  uint32_t high = src[4] | (src[5] << 8) | (src[6] << 16) | (src[7] << 24);
-  return ((uint64_t)high << 32) | (uint64_t)low;
-}
-
-/*
  * Gets the next element. Parsing errors result in an EVENT_TYPE_UNKNOWN type.
  * If there is nothing to process, the complete field is set to non-zero. If
  * an EVENT_TYPE_UNKNOWN type is returned once, and the caller does not check
  * this and continues to call this function, the behavior is undefined
  * (although it won't crash).
  */
-static android_log_list_element android_log_read_next_internal(android_log_context ctx, int peek) {
+static android_log_list_element android_log_read_next_internal(android_log_context context,
+                                                               int peek) {
   android_log_list_element elem;
   unsigned pos;
-  android_log_context_internal* context;
-
-  context = (android_log_context_internal*)ctx;
 
   memset(&elem, 0, sizeof(elem));
 
@@ -478,20 +404,22 @@
     return elem;
   }
 
-  elem.type = static_cast<AndroidEventLogType>(context->storage[pos++]);
+  elem.type = static_cast<AndroidEventLogType>(context->storage[pos]);
   switch ((int)elem.type) {
     case EVENT_TYPE_FLOAT:
     /* Rely on union to translate elem.data.int32 into elem.data.float32 */
     /* FALLTHRU */
-    case EVENT_TYPE_INT:
+    case EVENT_TYPE_INT: {
       elem.len = sizeof(int32_t);
-      if ((pos + elem.len) > context->len) {
+      if ((pos + sizeof(android_event_int_t)) > context->len) {
         elem.type = EVENT_TYPE_UNKNOWN;
         return elem;
       }
-      elem.data.int32 = get4LE(&context->storage[pos]);
+
+      auto* event_int = reinterpret_cast<android_event_int_t*>(&context->storage[pos]);
+      pos += sizeof(android_event_int_t);
+      elem.data.int32 = event_int->data;
       /* common tangeable object suffix */
-      pos += elem.len;
       elem.complete = !context->list_nest_depth && !context->count[0];
       if (!peek) {
         if (!context->count[context->list_nest_depth] ||
@@ -501,16 +429,19 @@
         context->pos = pos;
       }
       return elem;
+    }
 
-    case EVENT_TYPE_LONG:
+    case EVENT_TYPE_LONG: {
       elem.len = sizeof(int64_t);
-      if ((pos + elem.len) > context->len) {
+      if ((pos + sizeof(android_event_long_t)) > context->len) {
         elem.type = EVENT_TYPE_UNKNOWN;
         return elem;
       }
-      elem.data.int64 = get8LE(&context->storage[pos]);
+
+      auto* event_long = reinterpret_cast<android_event_long_t*>(&context->storage[pos]);
+      pos += sizeof(android_event_long_t);
+      elem.data.int64 = event_long->data;
       /* common tangeable object suffix */
-      pos += elem.len;
       elem.complete = !context->list_nest_depth && !context->count[0];
       if (!peek) {
         if (!context->count[context->list_nest_depth] ||
@@ -520,15 +451,22 @@
         context->pos = pos;
       }
       return elem;
+    }
 
-    case EVENT_TYPE_STRING:
-      if ((pos + sizeof(int32_t)) > context->len) {
+    case EVENT_TYPE_STRING: {
+      if ((pos + sizeof(android_event_string_t)) > context->len) {
         elem.type = EVENT_TYPE_UNKNOWN;
         elem.complete = true;
         return elem;
       }
-      elem.len = get4LE(&context->storage[pos]);
-      pos += sizeof(int32_t);
+      auto* event_string = reinterpret_cast<android_event_string_t*>(&context->storage[pos]);
+      pos += sizeof(android_event_string_t);
+      // Wire format is int32_t, but elem.len is uint16_t...
+      if (event_string->length >= UINT16_MAX) {
+        elem.type = EVENT_TYPE_UNKNOWN;
+        return elem;
+      }
+      elem.len = event_string->length;
       if ((pos + elem.len) > context->len) {
         elem.len = context->len - pos; /* truncate string */
         elem.complete = true;
@@ -537,7 +475,7 @@
           return elem;
         }
       }
-      elem.data.string = (char*)&context->storage[pos];
+      elem.data.string = event_string->data;
       /* common tangeable object suffix */
       pos += elem.len;
       elem.complete = !context->list_nest_depth && !context->count[0];
@@ -549,13 +487,16 @@
         context->pos = pos;
       }
       return elem;
+    }
 
-    case EVENT_TYPE_LIST:
-      if ((pos + sizeof(uint8_t)) > context->len) {
+    case EVENT_TYPE_LIST: {
+      if ((pos + sizeof(android_event_list_t)) > context->len) {
         elem.type = EVENT_TYPE_UNKNOWN;
         elem.complete = true;
         return elem;
       }
+      auto* event_list = reinterpret_cast<android_event_list_t*>(&context->storage[pos]);
+      pos += sizeof(android_event_list_t);
       elem.complete = context->list_nest_depth >= ANDROID_MAX_LIST_NEST_DEPTH;
       if (peek) {
         return elem;
@@ -563,15 +504,17 @@
       if (context->count[context->list_nest_depth]) {
         context->count[context->list_nest_depth]--;
       }
-      context->list_stop = !context->storage[pos];
+      context->list_stop = event_list->element_count == 0;
       context->list_nest_depth++;
       if (context->list_nest_depth <= ANDROID_MAX_LIST_NEST_DEPTH) {
-        context->count[context->list_nest_depth] = context->storage[pos];
+        context->count[context->list_nest_depth] = event_list->element_count;
       }
-      context->pos = pos + sizeof(uint8_t);
+      context->pos = pos;
       return elem;
+    }
 
     case EVENT_TYPE_LIST_STOP: /* Suprise Newline terminates lists. */
+      pos++;
       if (!peek) {
         context->pos = pos;
       }
diff --git a/liblog/log_event_write.cpp b/liblog/log_event_write.cpp
index d04ba90..39afd0c 100644
--- a/liblog/log_event_write.cpp
+++ b/liblog/log_event_write.cpp
@@ -20,8 +20,6 @@
 #include <log/log.h>
 #include <log/log_event_list.h>
 
-#include "log_portability.h"
-
 #define MAX_SUBTAG_LEN 32
 
 int __android_log_error_write(int tag, const char* subTag, int32_t uid, const char* data,
diff --git a/liblog/log_portability.h b/liblog/log_portability.h
deleted file mode 100644
index 468a498..0000000
--- a/liblog/log_portability.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/cdefs.h>
-#include <unistd.h>
-
-/*
- * Declare this library function as reimplementation.
- * Prevent circular dependencies, but allow _real_ library to hijack
- */
-#if defined(_WIN32)
-#define LIBLOG_WEAK static /* Accept that it is totally private */
-#else
-#define LIBLOG_WEAK extern "C" __attribute__((weak, visibility("default")))
-#endif
-
-/* possible missing definitions in sys/cdefs.h */
-
-/* DECLS */
-#ifndef __BEGIN_DECLS
-#if defined(__cplusplus)
-#define __BEGIN_DECLS extern "C" {
-#define __END_DECLS }
-#else
-#define __BEGIN_DECLS
-#define __END_DECLS
-#endif
-#endif
-
-/* possible missing definitions in unistd.h */
-
-#ifndef TEMP_FAILURE_RETRY
-/* Used to retry syscalls that can return EINTR. */
-#define TEMP_FAILURE_RETRY(exp)            \
-  ({                                       \
-    __typeof__(exp) _rc;                   \
-    do {                                   \
-      _rc = (exp);                         \
-    } while (_rc == -1 && errno == EINTR); \
-    _rc;                                   \
-  })
-#endif
diff --git a/liblog/log_time.cpp b/liblog/log_time.cpp
index 3ae250f..3fbe1cb 100644
--- a/liblog/log_time.cpp
+++ b/liblog/log_time.cpp
@@ -21,8 +21,6 @@
 
 #include <private/android_logger.h>
 
-#include "log_portability.h"
-
 const char log_time::default_format[] = "%m-%d %H:%M:%S.%q";
 const timespec log_time::EPOCH = {0, 0};
 
diff --git a/liblog/logd_reader.cpp b/liblog/logd_reader.cpp
index b7ba782..82ed6b2 100644
--- a/liblog/logd_reader.cpp
+++ b/liblog/logd_reader.cpp
@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#include <endian.h>
+#include "logd_reader.h"
+
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
@@ -24,6 +25,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/param.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -31,75 +33,12 @@
 #include <time.h>
 #include <unistd.h>
 
-#include <cutils/sockets.h>
-#include <private/android_filesystem_config.h>
+#include <string>
+
 #include <private/android_logger.h>
 
-#include "config_read.h"
-#include "log_portability.h"
-#include "logd_reader.h"
 #include "logger.h"
 
-/* branchless on many architectures. */
-#define min(x, y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
-
-static int logdAvailable(log_id_t LogId);
-static int logdVersion(struct android_log_logger* logger,
-                       struct android_log_transport_context* transp);
-static int logdRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp, struct log_msg* log_msg);
-static int logdPoll(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp);
-static void logdClose(struct android_log_logger_list* logger_list,
-                      struct android_log_transport_context* transp);
-static int logdClear(struct android_log_logger* logger,
-                     struct android_log_transport_context* transp);
-static ssize_t logdSetSize(struct android_log_logger* logger,
-                           struct android_log_transport_context* transp, size_t size);
-static ssize_t logdGetSize(struct android_log_logger* logger,
-                           struct android_log_transport_context* transp);
-static ssize_t logdGetReadableSize(struct android_log_logger* logger,
-                                   struct android_log_transport_context* transp);
-static ssize_t logdGetPrune(struct android_log_logger_list* logger,
-                            struct android_log_transport_context* transp, char* buf, size_t len);
-static ssize_t logdSetPrune(struct android_log_logger_list* logger,
-                            struct android_log_transport_context* transp, char* buf, size_t len);
-static ssize_t logdGetStats(struct android_log_logger_list* logger,
-                            struct android_log_transport_context* transp, char* buf, size_t len);
-
-struct android_log_transport_read logdLoggerRead = {
-    .node = {&logdLoggerRead.node, &logdLoggerRead.node},
-    .name = "logd",
-    .available = logdAvailable,
-    .version = logdVersion,
-    .read = logdRead,
-    .poll = logdPoll,
-    .close = logdClose,
-    .clear = logdClear,
-    .getSize = logdGetSize,
-    .setSize = logdSetSize,
-    .getReadableSize = logdGetReadableSize,
-    .getPrune = logdGetPrune,
-    .setPrune = logdSetPrune,
-    .getStats = logdGetStats,
-};
-
-static int logdAvailable(log_id_t logId) {
-  if (logId >= LOG_ID_MAX) {
-    return -EINVAL;
-  }
-  if (logId == LOG_ID_SECURITY) {
-    uid_t uid = __android_log_uid();
-    if (uid != AID_SYSTEM) {
-      return -EPERM;
-    }
-  }
-  if (access("/dev/socket/logdw", W_OK) == 0) {
-    return 0;
-  }
-  return -EBADF;
-}
-
 // Connects to /dev/socket/<name> and returns the associated fd or returns -1 on error.
 // O_CLOEXEC is always set.
 static int socket_local_client(const std::string& name, int type) {
@@ -112,7 +51,7 @@
   strlcpy(addr.sun_path, path.c_str(), sizeof(addr.sun_path));
 
   int fd = socket(AF_LOCAL, type | SOCK_CLOEXEC, 0);
-  if (fd == 0) {
+  if (fd == -1) {
     return -1;
   }
 
@@ -125,8 +64,7 @@
 }
 
 /* worker for sending the command to the logger */
-static ssize_t send_log_msg(struct android_log_logger* logger, const char* msg, char* buf,
-                            size_t buf_size) {
+ssize_t SendLogdControlMessage(char* buf, size_t buf_size) {
   ssize_t ret;
   size_t len;
   char* cp;
@@ -136,10 +74,6 @@
     return sock;
   }
 
-  if (msg) {
-    snprintf(buf, buf_size, msg, logger ? logger->logId : (unsigned)-1);
-  }
-
   len = strlen(buf) + 1;
   ret = TEMP_FAILURE_RETRY(write(sock, buf, len));
   if (ret <= 0) {
@@ -190,10 +124,6 @@
   return ret;
 }
 
-ssize_t __send_log_msg(char* buf, size_t buf_size) {
-  return send_log_msg(NULL, NULL, buf, buf_size);
-}
-
 static int check_log_success(char* buf, ssize_t ret) {
   if (ret < 0) {
     return ret;
@@ -207,19 +137,28 @@
   return 0;
 }
 
-static int logdClear(struct android_log_logger* logger,
-                     struct android_log_transport_context* transp __unused) {
+int android_logger_clear(struct logger* logger) {
+  if (!android_logger_is_logd(logger)) {
+    return -EINVAL;
+  }
+  uint32_t log_id = android_logger_get_id(logger);
   char buf[512];
+  snprintf(buf, sizeof(buf), "clear %" PRIu32, log_id);
 
-  return check_log_success(buf, send_log_msg(logger, "clear %d", buf, sizeof(buf)));
+  return check_log_success(buf, SendLogdControlMessage(buf, sizeof(buf)));
 }
 
 /* returns the total size of the log's ring buffer */
-static ssize_t logdGetSize(struct android_log_logger* logger,
-                           struct android_log_transport_context* transp __unused) {
-  char buf[512];
+long android_logger_get_log_size(struct logger* logger) {
+  if (!android_logger_is_logd(logger)) {
+    return -EINVAL;
+  }
 
-  ssize_t ret = send_log_msg(logger, "getLogSize %d", buf, sizeof(buf));
+  uint32_t log_id = android_logger_get_id(logger);
+  char buf[512];
+  snprintf(buf, sizeof(buf), "getLogSize %" PRIu32, log_id);
+
+  ssize_t ret = SendLogdControlMessage(buf, sizeof(buf));
   if (ret < 0) {
     return ret;
   }
@@ -231,24 +170,32 @@
   return atol(buf);
 }
 
-static ssize_t logdSetSize(struct android_log_logger* logger,
-                           struct android_log_transport_context* transp __unused, size_t size) {
+int android_logger_set_log_size(struct logger* logger, unsigned long size) {
+  if (!android_logger_is_logd(logger)) {
+    return -EINVAL;
+  }
+
+  uint32_t log_id = android_logger_get_id(logger);
   char buf[512];
+  snprintf(buf, sizeof(buf), "setLogSize %" PRIu32 " %lu", log_id, size);
 
-  snprintf(buf, sizeof(buf), "setLogSize %d %zu", logger->logId, size);
-
-  return check_log_success(buf, send_log_msg(NULL, NULL, buf, sizeof(buf)));
+  return check_log_success(buf, SendLogdControlMessage(buf, sizeof(buf)));
 }
 
 /*
  * returns the readable size of the log's ring buffer (that is, amount of the
  * log consumed)
  */
-static ssize_t logdGetReadableSize(struct android_log_logger* logger,
-                                   struct android_log_transport_context* transp __unused) {
-  char buf[512];
+long android_logger_get_log_readable_size(struct logger* logger) {
+  if (!android_logger_is_logd(logger)) {
+    return -EINVAL;
+  }
 
-  ssize_t ret = send_log_msg(logger, "getLogSizeUsed %d", buf, sizeof(buf));
+  uint32_t log_id = android_logger_get_id(logger);
+  char buf[512];
+  snprintf(buf, sizeof(buf), "getLogSizeUsed %" PRIu32, log_id);
+
+  ssize_t ret = SendLogdControlMessage(buf, sizeof(buf));
   if (ret < 0) {
     return ret;
   }
@@ -260,94 +207,68 @@
   return atol(buf);
 }
 
-/*
- * returns the logger version
- */
-static int logdVersion(struct android_log_logger* logger __unused,
-                       struct android_log_transport_context* transp __unused) {
-  uid_t uid = __android_log_uid();
-  return ((uid != AID_ROOT) && (uid != AID_LOG) && (uid != AID_SYSTEM)) ? 3 : 4;
+int android_logger_get_log_version(struct logger*) {
+  return 4;
 }
 
-/*
- * returns statistics
- */
-static ssize_t logdGetStats(struct android_log_logger_list* logger_list,
-                            struct android_log_transport_context* transp __unused, char* buf,
-                            size_t len) {
-  struct android_log_logger* logger;
+ssize_t android_logger_get_statistics(struct logger_list* logger_list, char* buf, size_t len) {
+  if (logger_list->mode & ANDROID_LOG_PSTORE) {
+    return -EINVAL;
+  }
+
   char* cp = buf;
   size_t remaining = len;
   size_t n;
 
   n = snprintf(cp, remaining, "getStatistics");
-  n = min(n, remaining);
+  n = MIN(n, remaining);
   remaining -= n;
   cp += n;
 
-  logger_for_each(logger, logger_list) {
-    n = snprintf(cp, remaining, " %d", logger->logId);
-    n = min(n, remaining);
-    remaining -= n;
-    cp += n;
+  for (size_t log_id = 0; log_id < LOG_ID_MAX; ++log_id) {
+    if ((1 << log_id) & logger_list->log_mask) {
+      n = snprintf(cp, remaining, " %zu", log_id);
+      n = MIN(n, remaining);
+      remaining -= n;
+      cp += n;
+    }
   }
 
   if (logger_list->pid) {
     snprintf(cp, remaining, " pid=%u", logger_list->pid);
   }
 
-  return send_log_msg(NULL, NULL, buf, len);
+  return SendLogdControlMessage(buf, len);
 }
-
-static ssize_t logdGetPrune(struct android_log_logger_list* logger_list __unused,
-                            struct android_log_transport_context* transp __unused, char* buf,
-                            size_t len) {
-  return send_log_msg(NULL, "getPruneList", buf, len);
-}
-
-static ssize_t logdSetPrune(struct android_log_logger_list* logger_list __unused,
-                            struct android_log_transport_context* transp __unused, char* buf,
-                            size_t len) {
-  const char cmd[] = "setPruneList ";
-  const size_t cmdlen = sizeof(cmd) - 1;
-
-  if (strlen(buf) > (len - cmdlen)) {
-    return -ENOMEM; /* KISS */
-  }
-  memmove(buf + cmdlen, buf, len - cmdlen);
-  buf[len - 1] = '\0';
-  memcpy(buf, cmd, cmdlen);
-
-  return check_log_success(buf, send_log_msg(NULL, NULL, buf, len));
-}
-
-static void caught_signal(int signum __unused) {}
-
-static int logdOpen(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp) {
-  struct android_log_logger* logger;
-  struct sigaction ignore;
-  struct sigaction old_sigaction;
-  unsigned int old_alarm = 0;
-  char buffer[256], *cp, c;
-  int e, ret, remaining, sock;
-
-  if (!logger_list) {
+ssize_t android_logger_get_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
+  if (logger_list->mode & ANDROID_LOG_PSTORE) {
     return -EINVAL;
   }
 
-  sock = atomic_load(&transp->context.sock);
+  snprintf(buf, len, "getPruneList");
+  return SendLogdControlMessage(buf, len);
+}
+
+int android_logger_set_prune_list(struct logger_list* logger_list, const char* buf, size_t len) {
+  if (logger_list->mode & ANDROID_LOG_PSTORE) {
+    return -EINVAL;
+  }
+
+  std::string cmd = "setPruneList " + std::string{buf, len};
+
+  return check_log_success(cmd.data(), SendLogdControlMessage(cmd.data(), cmd.size()));
+}
+
+static int logdOpen(struct logger_list* logger_list) {
+  char buffer[256], *cp, c;
+  int ret, remaining, sock;
+
+  sock = atomic_load(&logger_list->fd);
   if (sock > 0) {
     return sock;
   }
 
   sock = socket_local_client("logdr", SOCK_SEQPACKET);
-  if (sock == 0) {
-    /* Guarantee not file descriptor zero */
-    int newsock = socket_local_client("logdr", SOCK_SEQPACKET);
-    close(sock);
-    sock = newsock;
-  }
   if (sock <= 0) {
     if ((sock == -1) && errno) {
       return -errno;
@@ -362,17 +283,20 @@
   cp += 5;
   c = '=';
   remaining = sizeof(buffer) - (cp - buffer);
-  logger_for_each(logger, logger_list) {
-    ret = snprintf(cp, remaining, "%c%u", c, logger->logId);
-    ret = min(ret, remaining);
-    remaining -= ret;
-    cp += ret;
-    c = ',';
+
+  for (size_t log_id = 0; log_id < LOG_ID_MAX; ++log_id) {
+    if ((1 << log_id) & logger_list->log_mask) {
+      ret = snprintf(cp, remaining, "%c%zu", c, log_id);
+      ret = MIN(ret, remaining);
+      remaining -= ret;
+      cp += ret;
+      c = ',';
+    }
   }
 
   if (logger_list->tail) {
     ret = snprintf(cp, remaining, " tail=%u", logger_list->tail);
-    ret = min(ret, remaining);
+    ret = MIN(ret, remaining);
     remaining -= ret;
     cp += ret;
   }
@@ -381,46 +305,30 @@
     if (logger_list->mode & ANDROID_LOG_WRAP) {
       // ToDo: alternate API to allow timeout to be adjusted.
       ret = snprintf(cp, remaining, " timeout=%u", ANDROID_LOG_WRAP_DEFAULT_TIMEOUT);
-      ret = min(ret, remaining);
+      ret = MIN(ret, remaining);
       remaining -= ret;
       cp += ret;
     }
     ret = snprintf(cp, remaining, " start=%" PRIu32 ".%09" PRIu32, logger_list->start.tv_sec,
                    logger_list->start.tv_nsec);
-    ret = min(ret, remaining);
+    ret = MIN(ret, remaining);
     remaining -= ret;
     cp += ret;
   }
 
   if (logger_list->pid) {
     ret = snprintf(cp, remaining, " pid=%u", logger_list->pid);
-    ret = min(ret, remaining);
+    ret = MIN(ret, remaining);
     cp += ret;
   }
 
-  if (logger_list->mode & ANDROID_LOG_NONBLOCK) {
-    /* Deal with an unresponsive logd */
-    memset(&ignore, 0, sizeof(ignore));
-    ignore.sa_handler = caught_signal;
-    sigemptyset(&ignore.sa_mask);
-    /* particularily useful if tombstone is reporting for logd */
-    sigaction(SIGALRM, &ignore, &old_sigaction);
-    old_alarm = alarm(30);
-  }
-  ret = write(sock, buffer, cp - buffer);
-  e = errno;
-  if (logger_list->mode & ANDROID_LOG_NONBLOCK) {
-    if (e == EINTR) {
-      e = ETIMEDOUT;
-    }
-    alarm(old_alarm);
-    sigaction(SIGALRM, &old_sigaction, NULL);
-  }
+  ret = TEMP_FAILURE_RETRY(write(sock, buffer, cp - buffer));
+  int write_errno = errno;
 
   if (ret <= 0) {
     close(sock);
-    if ((ret == -1) && e) {
-      return -e;
+    if (ret == -1) {
+      return -write_errno;
     }
     if (ret == 0) {
       return -EIO;
@@ -428,7 +336,7 @@
     return ret;
   }
 
-  ret = atomic_exchange(&transp->context.sock, sock);
+  ret = atomic_exchange(&logger_list->fd, sock);
   if ((ret > 0) && (ret != sock)) {
     close(ret);
   }
@@ -436,84 +344,27 @@
 }
 
 /* Read from the selected logs */
-static int logdRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp, struct log_msg* log_msg) {
-  int ret, e;
-  struct sigaction ignore;
-  struct sigaction old_sigaction;
-  unsigned int old_alarm = 0;
-
-  ret = logdOpen(logger_list, transp);
+int LogdRead(struct logger_list* logger_list, struct log_msg* log_msg) {
+  int ret = logdOpen(logger_list);
   if (ret < 0) {
     return ret;
   }
 
-  memset(log_msg, 0, sizeof(*log_msg));
-
-  unsigned int new_alarm = 0;
-  if (logger_list->mode & ANDROID_LOG_NONBLOCK) {
-    if ((logger_list->mode & ANDROID_LOG_WRAP) &&
-        (logger_list->start.tv_sec || logger_list->start.tv_nsec)) {
-      /* b/64143705 */
-      new_alarm = (ANDROID_LOG_WRAP_DEFAULT_TIMEOUT * 11) / 10 + 10;
-      logger_list->mode &= ~ANDROID_LOG_WRAP;
-    } else {
-      new_alarm = 30;
-    }
-
-    memset(&ignore, 0, sizeof(ignore));
-    ignore.sa_handler = caught_signal;
-    sigemptyset(&ignore.sa_mask);
-    /* particularily useful if tombstone is reporting for logd */
-    sigaction(SIGALRM, &ignore, &old_sigaction);
-    old_alarm = alarm(new_alarm);
-  }
-
   /* NOTE: SOCK_SEQPACKET guarantees we read exactly one full entry */
-  ret = recv(ret, log_msg, LOGGER_ENTRY_MAX_LEN, 0);
-  e = errno;
-
-  if (new_alarm) {
-    if ((ret == 0) || (e == EINTR)) {
-      e = EAGAIN;
-      ret = -1;
-    }
-    alarm(old_alarm);
-    sigaction(SIGALRM, &old_sigaction, NULL);
+  ret = TEMP_FAILURE_RETRY(recv(ret, log_msg, LOGGER_ENTRY_MAX_LEN, 0));
+  if ((logger_list->mode & ANDROID_LOG_NONBLOCK) && ret == 0) {
+    return -EAGAIN;
   }
 
-  if ((ret == -1) && e) {
-    return -e;
-  }
-  return ret;
-}
-
-static int logdPoll(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp) {
-  struct pollfd p;
-
-  int ret = logdOpen(logger_list, transp);
-  if (ret < 0) {
-    return ret;
-  }
-
-  memset(&p, 0, sizeof(p));
-  p.fd = ret;
-  p.events = POLLIN;
-  ret = poll(&p, 1, 20);
-  if ((ret > 0) && !(p.revents & POLLIN)) {
-    ret = 0;
-  }
-  if ((ret == -1) && errno) {
+  if (ret == -1) {
     return -errno;
   }
   return ret;
 }
 
 /* Close all the logs */
-static void logdClose(struct android_log_logger_list* logger_list __unused,
-                      struct android_log_transport_context* transp) {
-  int sock = atomic_exchange(&transp->context.sock, -1);
+void LogdClose(struct logger_list* logger_list) {
+  int sock = atomic_exchange(&logger_list->fd, -1);
   if (sock > 0) {
     close(sock);
   }
diff --git a/liblog/logd_reader.h b/liblog/logd_reader.h
index 7c53cbb..68eef02 100644
--- a/liblog/logd_reader.h
+++ b/liblog/logd_reader.h
@@ -16,12 +16,16 @@
 
 #pragma once
 
+#include <sys/cdefs.h>
 #include <unistd.h>
 
-#include "log_portability.h"
+#include "log/log_read.h"
 
 __BEGIN_DECLS
 
-ssize_t __send_log_msg(char* buf, size_t buf_size);
+int LogdRead(struct logger_list* logger_list, struct log_msg* log_msg);
+void LogdClose(struct logger_list* logger_list);
+
+ssize_t SendLogdControlMessage(char* buf, size_t buf_size);
 
 __END_DECLS
diff --git a/liblog/logd_writer.cpp b/liblog/logd_writer.cpp
index c3f72f4..a230749 100644
--- a/liblog/logd_writer.cpp
+++ b/liblog/logd_writer.cpp
@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#include <endian.h>
+#include "logd_writer.h"
+
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
@@ -31,101 +32,61 @@
 #include <time.h>
 #include <unistd.h>
 
-#include <cutils/sockets.h>
 #include <private/android_filesystem_config.h>
 #include <private/android_logger.h>
 
-#include "config_write.h"
-#include "log_portability.h"
 #include "logger.h"
 #include "uio.h"
 
-/* branchless on many architectures. */
-#define min(x, y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
+static atomic_int logd_socket;
 
-static int logdAvailable(log_id_t LogId);
-static int logdOpen();
-static void logdClose();
-static int logdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
-
-struct android_log_transport_write logdLoggerWrite = {
-    .node = {&logdLoggerWrite.node, &logdLoggerWrite.node},
-    .context.sock = -EBADF,
-    .name = "logd",
-    .available = logdAvailable,
-    .open = logdOpen,
-    .close = logdClose,
-    .write = logdWrite,
-};
-
-/* log_init_lock assumed */
-static int logdOpen() {
-  int i, ret = 0;
-
-  i = atomic_load(&logdLoggerWrite.context.sock);
-  if (i < 0) {
-    int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0));
-    if (sock < 0) {
-      ret = -errno;
-    } else {
-      struct sockaddr_un un;
-      memset(&un, 0, sizeof(struct sockaddr_un));
-      un.sun_family = AF_UNIX;
-      strcpy(un.sun_path, "/dev/socket/logdw");
-
-      if (TEMP_FAILURE_RETRY(connect(sock, (struct sockaddr*)&un, sizeof(struct sockaddr_un))) <
-          0) {
-        ret = -errno;
-        switch (ret) {
-          case -ENOTCONN:
-          case -ECONNREFUSED:
-          case -ENOENT:
-            i = atomic_exchange(&logdLoggerWrite.context.sock, ret);
-            [[fallthrough]];
-          default:
-            break;
-        }
-        close(sock);
-      } else {
-        ret = atomic_exchange(&logdLoggerWrite.context.sock, sock);
-        if ((ret >= 0) && (ret != sock)) {
-          close(ret);
-        }
-        ret = 0;
-      }
-    }
-  }
-
-  return ret;
+// Note that it is safe to call connect() multiple times on DGRAM Unix domain sockets, so this
+// function is used to reconnect to logd without requiring a new socket.
+static void LogdConnect() {
+  sockaddr_un un = {};
+  un.sun_family = AF_UNIX;
+  strcpy(un.sun_path, "/dev/socket/logdw");
+  TEMP_FAILURE_RETRY(connect(logd_socket, reinterpret_cast<sockaddr*>(&un), sizeof(sockaddr_un)));
 }
 
-static void __logdClose(int negative_errno) {
-  int sock = atomic_exchange(&logdLoggerWrite.context.sock, negative_errno);
-  if (sock >= 0) {
-    close(sock);
+// logd_socket should only be opened once.  If we see that logd_socket is uninitialized, we create a
+// new socket and attempt to exchange it into the atomic logd_socket.  If the compare/exchange was
+// successful, then that will be the socket used for the duration of the program, otherwise a
+// different thread has already opened and written the socket to the atomic, so close the new socket
+// and return.
+static void GetSocket() {
+  if (logd_socket != 0) {
+    return;
   }
+
+  int new_socket =
+      TEMP_FAILURE_RETRY(socket(PF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0));
+  if (new_socket <= 0) {
+    return;
+  }
+
+  int uninitialized_value = 0;
+  if (!logd_socket.compare_exchange_strong(uninitialized_value, new_socket)) {
+    close(new_socket);
+    return;
+  }
+
+  LogdConnect();
 }
 
-static void logdClose() {
-  __logdClose(-EBADF);
+// This is the one exception to the above.  Zygote uses this to clean up open FD's after fork() and
+// before specialization.  It is single threaded at this point and therefore this function is
+// explicitly not thread safe.  It sets logd_socket to 0, so future logs will be safely initialized
+// whenever they happen.
+void LogdClose() {
+  if (logd_socket > 0) {
+    close(logd_socket);
+  }
+  logd_socket = 0;
 }
 
-static int logdAvailable(log_id_t logId) {
-  if (logId >= LOG_ID_MAX || logId == LOG_ID_KERNEL) {
-    return -EINVAL;
-  }
-  if (atomic_load(&logdLoggerWrite.context.sock) < 0) {
-    if (access("/dev/socket/logdw", W_OK) == 0) {
-      return 0;
-    }
-    return -EBADF;
-  }
-  return 1;
-}
-
-static int logdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
+int LogdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
   ssize_t ret;
-  int sock;
   static const unsigned headerLength = 1;
   struct iovec newVec[nr + headerLength];
   android_log_header_t header;
@@ -133,18 +94,14 @@
   static atomic_int dropped;
   static atomic_int droppedSecurity;
 
-  sock = atomic_load(&logdLoggerWrite.context.sock);
-  if (sock < 0) switch (sock) {
-      case -ENOTCONN:
-      case -ECONNREFUSED:
-      case -ENOENT:
-        break;
-      default:
-        return -EBADF;
-    }
+  GetSocket();
+
+  if (logd_socket <= 0) {
+    return -EBADF;
+  }
 
   /* logd, after initialization and priv drop */
-  if (__android_log_uid() == AID_LOGD) {
+  if (getuid() == AID_LOGD) {
     /*
      * ignore log messages we send to ourself (logd).
      * Such log messages are often generated by libraries we depend on
@@ -153,24 +110,6 @@
     return 0;
   }
 
-  /*
-   *  struct {
-   *      // what we provide to socket
-   *      android_log_header_t header;
-   *      // caller provides
-   *      union {
-   *          struct {
-   *              char     prio;
-   *              char     payload[];
-   *          } string;
-   *          struct {
-   *              uint32_t tag
-   *              char     payload[];
-   *          } binary;
-   *      };
-   *  };
-   */
-
   header.tid = gettid();
   header.realtime.tv_sec = ts->tv_sec;
   header.realtime.tv_nsec = ts->tv_nsec;
@@ -178,41 +117,39 @@
   newVec[0].iov_base = (unsigned char*)&header;
   newVec[0].iov_len = sizeof(header);
 
-  if (sock >= 0) {
-    int32_t snapshot = atomic_exchange_explicit(&droppedSecurity, 0, memory_order_relaxed);
-    if (snapshot) {
-      android_log_event_int_t buffer;
+  int32_t snapshot = atomic_exchange_explicit(&droppedSecurity, 0, memory_order_relaxed);
+  if (snapshot) {
+    android_log_event_int_t buffer;
 
-      header.id = LOG_ID_SECURITY;
-      buffer.header.tag = htole32(LIBLOG_LOG_TAG);
-      buffer.payload.type = EVENT_TYPE_INT;
-      buffer.payload.data = htole32(snapshot);
+    header.id = LOG_ID_SECURITY;
+    buffer.header.tag = LIBLOG_LOG_TAG;
+    buffer.payload.type = EVENT_TYPE_INT;
+    buffer.payload.data = snapshot;
 
-      newVec[headerLength].iov_base = &buffer;
-      newVec[headerLength].iov_len = sizeof(buffer);
+    newVec[headerLength].iov_base = &buffer;
+    newVec[headerLength].iov_len = sizeof(buffer);
 
-      ret = TEMP_FAILURE_RETRY(writev(sock, newVec, 2));
-      if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
-        atomic_fetch_add_explicit(&droppedSecurity, snapshot, memory_order_relaxed);
-      }
+    ret = TEMP_FAILURE_RETRY(writev(logd_socket, newVec, 2));
+    if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
+      atomic_fetch_add_explicit(&droppedSecurity, snapshot, memory_order_relaxed);
     }
-    snapshot = atomic_exchange_explicit(&dropped, 0, memory_order_relaxed);
-    if (snapshot && __android_log_is_loggable_len(ANDROID_LOG_INFO, "liblog", strlen("liblog"),
-                                                  ANDROID_LOG_VERBOSE)) {
-      android_log_event_int_t buffer;
+  }
+  snapshot = atomic_exchange_explicit(&dropped, 0, memory_order_relaxed);
+  if (snapshot && __android_log_is_loggable_len(ANDROID_LOG_INFO, "liblog", strlen("liblog"),
+                                                ANDROID_LOG_VERBOSE)) {
+    android_log_event_int_t buffer;
 
-      header.id = LOG_ID_EVENTS;
-      buffer.header.tag = htole32(LIBLOG_LOG_TAG);
-      buffer.payload.type = EVENT_TYPE_INT;
-      buffer.payload.data = htole32(snapshot);
+    header.id = LOG_ID_EVENTS;
+    buffer.header.tag = LIBLOG_LOG_TAG;
+    buffer.payload.type = EVENT_TYPE_INT;
+    buffer.payload.data = snapshot;
 
-      newVec[headerLength].iov_base = &buffer;
-      newVec[headerLength].iov_len = sizeof(buffer);
+    newVec[headerLength].iov_base = &buffer;
+    newVec[headerLength].iov_len = sizeof(buffer);
 
-      ret = TEMP_FAILURE_RETRY(writev(sock, newVec, 2));
-      if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
-        atomic_fetch_add_explicit(&dropped, snapshot, memory_order_relaxed);
-      }
+    ret = TEMP_FAILURE_RETRY(writev(logd_socket, newVec, 2));
+    if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
+      atomic_fetch_add_explicit(&dropped, snapshot, memory_order_relaxed);
     }
   }
 
@@ -231,49 +168,23 @@
     }
   }
 
-  /*
-   * The write below could be lost, but will never block.
-   *
-   * ENOTCONN occurs if logd has died.
-   * ENOENT occurs if logd is not running and socket is missing.
-   * ECONNREFUSED occurs if we can not reconnect to logd.
-   * EAGAIN occurs if logd is overloaded.
-   */
-  if (sock < 0) {
-    ret = sock;
-  } else {
-    ret = TEMP_FAILURE_RETRY(writev(sock, newVec, i));
-    if (ret < 0) {
-      ret = -errno;
-    }
+  // The write below could be lost, but will never block.
+  // EAGAIN occurs if logd is overloaded, other errors indicate that something went wrong with
+  // the connection, so we reset it and try again.
+  ret = TEMP_FAILURE_RETRY(writev(logd_socket, newVec, i));
+  if (ret < 0 && errno != EAGAIN) {
+    LogdConnect();
+
+    ret = TEMP_FAILURE_RETRY(writev(logd_socket, newVec, i));
   }
-  switch (ret) {
-    case -ENOTCONN:
-    case -ECONNREFUSED:
-    case -ENOENT:
-      if (__android_log_trylock()) {
-        return ret; /* in a signal handler? try again when less stressed */
-      }
-      __logdClose(ret);
-      ret = logdOpen();
-      __android_log_unlock();
 
-      if (ret < 0) {
-        return ret;
-      }
-
-      ret = TEMP_FAILURE_RETRY(writev(atomic_load(&logdLoggerWrite.context.sock), newVec, i));
-      if (ret < 0) {
-        ret = -errno;
-      }
-      [[fallthrough]];
-    default:
-      break;
+  if (ret < 0) {
+    ret = -errno;
   }
 
   if (ret > (ssize_t)sizeof(header)) {
     ret -= sizeof(header);
-  } else if (ret == -EAGAIN) {
+  } else if (ret < 0) {
     atomic_fetch_add_explicit(&dropped, 1, memory_order_relaxed);
     if (logId == LOG_ID_SECURITY) {
       atomic_fetch_add_explicit(&droppedSecurity, 1, memory_order_relaxed);
diff --git a/liblog/logd_writer.h b/liblog/logd_writer.h
new file mode 100644
index 0000000..41197b5
--- /dev/null
+++ b/liblog/logd_writer.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+#include <android/log.h>
+
+int LogdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
+void LogdClose();
diff --git a/liblog/logger.h b/liblog/logger.h
index 1f632c0..ddff19d 100644
--- a/liblog/logger.h
+++ b/liblog/logger.h
@@ -17,149 +17,35 @@
 #pragma once
 
 #include <stdatomic.h>
-#include <stdbool.h>
+#include <sys/cdefs.h>
 
-#include <cutils/list.h>
 #include <log/log.h>
 
-#include "log_portability.h"
 #include "uio.h"
 
 __BEGIN_DECLS
 
-/* Union, sock or fd of zero is not allowed unless static initialized */
-union android_log_context_union {
-  void* priv;
-  atomic_int sock;
+struct logger_list {
   atomic_int fd;
-  struct listnode* node;
-  atomic_uintptr_t atomic_pointer;
-};
-
-struct android_log_transport_write {
-  struct listnode node;
-  const char* name;                  /* human name to describe the transport */
-  unsigned logMask;                  /* mask cache of available() success */
-  union android_log_context_union context; /* Initialized by static allocation */
-
-  int (*available)(log_id_t logId); /* Does not cause resources to be taken */
-  int (*open)();   /* can be called multiple times, reusing current resources */
-  void (*close)(); /* free up resources */
-  /* write log to transport, returns number of bytes propagated, or -errno */
-  int (*write)(log_id_t logId, struct timespec* ts, struct iovec* vec,
-               size_t nr);
-};
-
-struct android_log_logger_list;
-struct android_log_transport_context;
-struct android_log_logger;
-
-struct android_log_transport_read {
-  struct listnode node;
-  const char* name; /* human name to describe the transport */
-
-  /* Does not cause resources to be taken */
-  int (*available)(log_id_t logId);
-  int (*version)(struct android_log_logger* logger,
-                 struct android_log_transport_context* transp);
-  /* Release resources taken by the following interfaces */
-  void (*close)(struct android_log_logger_list* logger_list,
-                struct android_log_transport_context* transp);
-  /*
-   * Expect all to instantiate open automagically on any call,
-   * so we do not have an explicit open call.
-   */
-  int (*read)(struct android_log_logger_list* logger_list,
-              struct android_log_transport_context* transp,
-              struct log_msg* log_msg);
-  /* Must only be called if not ANDROID_LOG_NONBLOCK (blocking) */
-  int (*poll)(struct android_log_logger_list* logger_list,
-              struct android_log_transport_context* transp);
-
-  int (*clear)(struct android_log_logger* logger,
-               struct android_log_transport_context* transp);
-  ssize_t (*setSize)(struct android_log_logger* logger,
-                     struct android_log_transport_context* transp, size_t size);
-  ssize_t (*getSize)(struct android_log_logger* logger,
-                     struct android_log_transport_context* transp);
-  ssize_t (*getReadableSize)(struct android_log_logger* logger,
-                             struct android_log_transport_context* transp);
-
-  ssize_t (*getPrune)(struct android_log_logger_list* logger_list,
-                      struct android_log_transport_context* transp, char* buf,
-                      size_t len);
-  ssize_t (*setPrune)(struct android_log_logger_list* logger_list,
-                      struct android_log_transport_context* transp, char* buf,
-                      size_t len);
-  ssize_t (*getStats)(struct android_log_logger_list* logger_list,
-                      struct android_log_transport_context* transp, char* buf,
-                      size_t len);
-};
-
-struct android_log_logger_list {
-  struct listnode logger;
-  struct listnode transport;
   int mode;
   unsigned int tail;
   log_time start;
   pid_t pid;
+  uint32_t log_mask;
 };
 
-struct android_log_logger {
-  struct listnode node;
-  struct android_log_logger_list* parent;
+// Format for a 'logger' entry: uintptr_t where only the bottom 32 bits are used.
+// bit 31: Set if this 'logger' is for logd.
+// bit 30: Set if this 'logger' is for pmsg
+// bits 0-2: the decimal value of the log buffer.
+// Other bits are unused.
 
-  log_id_t logId;
-};
+#define LOGGER_LOGD (1U << 31)
+#define LOGGER_PMSG (1U << 30)
+#define LOGGER_LOG_ID_MASK ((1U << 3) - 1)
 
-struct android_log_transport_context {
-  struct listnode node;
-  union android_log_context_union context; /* zero init per-transport context */
-  struct android_log_logger_list* parent;
-
-  struct android_log_transport_read* transport;
-  unsigned logMask;      /* mask of requested log buffers */
-  int ret;               /* return value associated with following data */
-  struct log_msg logMsg; /* peek at upcoming data, valid if logMsg.len != 0 */
-};
-
-/* assumes caller has structures read-locked, single threaded, or fenced */
-#define transport_context_for_each(transp, logger_list)                          \
-  for ((transp) = node_to_item((logger_list)->transport.next,                    \
-                               struct android_log_transport_context, node);      \
-       ((transp) != node_to_item(&(logger_list)->transport,                      \
-                                 struct android_log_transport_context, node)) && \
-       ((transp)->parent == (logger_list));                                      \
-       (transp) = node_to_item((transp)->node.next,                              \
-                               struct android_log_transport_context, node))
-
-#define logger_for_each(logp, logger_list)                          \
-  for ((logp) = node_to_item((logger_list)->logger.next,            \
-                             struct android_log_logger, node);      \
-       ((logp) != node_to_item(&(logger_list)->logger,              \
-                               struct android_log_logger, node)) && \
-       ((logp)->parent == (logger_list));                           \
-       (logp) =                                                     \
-           node_to_item((logp)->node.next, struct android_log_logger, node))
-
-/* OS specific dribs and drabs */
-
-#if defined(_WIN32)
-#include <private/android_filesystem_config.h>
-typedef uint32_t uid_t;
-static inline uid_t __android_log_uid() {
-  return AID_SYSTEM;
+inline bool android_logger_is_logd(struct logger* logger) {
+  return reinterpret_cast<uintptr_t>(logger) & LOGGER_LOGD;
 }
-#else
-static inline uid_t __android_log_uid() {
-  return getuid();
-}
-#endif
-
-void __android_log_lock();
-int __android_log_trylock();
-void __android_log_unlock();
-
-extern int __android_log_transport;
 
 __END_DECLS
diff --git a/liblog/logger_lock.cpp b/liblog/logger_lock.cpp
deleted file mode 100644
index 4636b00..0000000
--- a/liblog/logger_lock.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2007-2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * Some OS specific dribs and drabs (locking etc).
- */
-
-#if !defined(_WIN32)
-#include <pthread.h>
-#endif
-
-#include "logger.h"
-
-#if !defined(_WIN32)
-static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
-#endif
-
-void __android_log_lock() {
-#if !defined(_WIN32)
-  /*
-   * If we trigger a signal handler in the middle of locked activity and the
-   * signal handler logs a message, we could get into a deadlock state.
-   */
-  pthread_mutex_lock(&log_init_lock);
-#endif
-}
-
-int __android_log_trylock() {
-#if !defined(_WIN32)
-  return pthread_mutex_trylock(&log_init_lock);
-#else
-  return 0;
-#endif
-}
-
-void __android_log_unlock() {
-#if !defined(_WIN32)
-  pthread_mutex_unlock(&log_init_lock);
-#endif
-}
diff --git a/liblog/logger_name.cpp b/liblog/logger_name.cpp
index ece0550..e72290e 100644
--- a/liblog/logger_name.cpp
+++ b/liblog/logger_name.cpp
@@ -19,8 +19,6 @@
 
 #include <log/log.h>
 
-#include "log_portability.h"
-
 /* In the future, we would like to make this list extensible */
 static const char* LOG_NAME[LOG_ID_MAX] = {
     /* clang-format off */
@@ -43,7 +41,10 @@
 }
 
 static_assert(std::is_same<std::underlying_type<log_id_t>::type, uint32_t>::value,
-              "log_id_t must be an unsigned int");
+              "log_id_t must be an uint32_t");
+
+static_assert(std::is_same<std::underlying_type<android_LogPriority>::type, uint32_t>::value,
+              "log_id_t must be an uint32_t");
 
 log_id_t android_name_to_log_id(const char* logName) {
   const char* b;
diff --git a/liblog/logger_read.cpp b/liblog/logger_read.cpp
index 4cf0846..4937042 100644
--- a/liblog/logger_read.cpp
+++ b/liblog/logger_read.cpp
@@ -21,265 +21,56 @@
 #include <pthread.h>
 #include <sched.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
 #include <android/log.h>
-#include <cutils/list.h>
-#include <private/android_filesystem_config.h>
 
-#include "config_read.h"
-#include "log_portability.h"
+#include "logd_reader.h"
 #include "logger.h"
-
-/* android_logger_alloc unimplemented, no use case */
-/* android_logger_free not exported */
-static void android_logger_free(struct logger* logger) {
-  struct android_log_logger* logger_internal = (struct android_log_logger*)logger;
-
-  if (!logger_internal) {
-    return;
-  }
-
-  list_remove(&logger_internal->node);
-
-  free(logger_internal);
-}
-
-/* android_logger_alloc unimplemented, no use case */
+#include "pmsg_reader.h"
 
 /* method for getting the associated sublog id */
 log_id_t android_logger_get_id(struct logger* logger) {
-  return ((struct android_log_logger*)logger)->logId;
+  return static_cast<log_id_t>(reinterpret_cast<uintptr_t>(logger) & LOGGER_LOG_ID_MASK);
 }
 
-static int init_transport_context(struct android_log_logger_list* logger_list) {
-  struct android_log_transport_read* transport;
-  struct listnode* node;
-
+static struct logger_list* android_logger_list_alloc_internal(int mode, unsigned int tail,
+                                                              log_time start, pid_t pid) {
+  auto* logger_list = static_cast<struct logger_list*>(calloc(1, sizeof(struct logger_list)));
   if (!logger_list) {
-    return -EINVAL;
+    return nullptr;
   }
 
-  if (list_empty(&logger_list->logger)) {
-    return -EINVAL;
-  }
-
-  if (!list_empty(&logger_list->transport)) {
-    return 0;
-  }
-
-  __android_log_lock();
-  /* mini __write_to_log_initialize() to populate transports */
-  if (list_empty(&__android_log_transport_read) && list_empty(&__android_log_persist_read)) {
-    __android_log_config_read();
-  }
-  __android_log_unlock();
-
-  node = (logger_list->mode & ANDROID_LOG_PSTORE) ? &__android_log_persist_read
-                                                  : &__android_log_transport_read;
-
-  read_transport_for_each(transport, node) {
-    struct android_log_transport_context* transp;
-    struct android_log_logger* logger;
-    unsigned logMask = 0;
-
-    logger_for_each(logger, logger_list) {
-      log_id_t logId = logger->logId;
-
-      if ((logId == LOG_ID_SECURITY) && (__android_log_uid() != AID_SYSTEM)) {
-        continue;
-      }
-      if (transport->read && (!transport->available || (transport->available(logId) >= 0))) {
-        logMask |= 1 << logId;
-      }
-    }
-    if (!logMask) {
-      continue;
-    }
-    transp = static_cast<android_log_transport_context*>(calloc(1, sizeof(*transp)));
-    if (!transp) {
-      return -ENOMEM;
-    }
-    transp->parent = logger_list;
-    transp->transport = transport;
-    transp->logMask = logMask;
-    transp->ret = 1;
-    list_add_tail(&logger_list->transport, &transp->node);
-  }
-  if (list_empty(&logger_list->transport)) {
-    return -ENODEV;
-  }
-  return 0;
-}
-
-#define LOGGER_FUNCTION(logger, def, func, args...)                                  \
-  ssize_t ret = -EINVAL;                                                             \
-  struct android_log_transport_context* transp;                                      \
-  struct android_log_logger* logger_internal = (struct android_log_logger*)(logger); \
-                                                                                     \
-  if (!logger_internal) {                                                            \
-    return ret;                                                                      \
-  }                                                                                  \
-  ret = init_transport_context(logger_internal->parent);                             \
-  if (ret < 0) {                                                                     \
-    return ret;                                                                      \
-  }                                                                                  \
-                                                                                     \
-  ret = (def);                                                                       \
-  transport_context_for_each(transp, logger_internal->parent) {                      \
-    if ((transp->logMask & (1 << logger_internal->logId)) && transp->transport &&    \
-        transp->transport->func) {                                                   \
-      ssize_t retval = (transp->transport->func)(logger_internal, transp, ##args);   \
-      if ((ret >= 0) || (ret == (def))) {                                            \
-        ret = retval;                                                                \
-      }                                                                              \
-    }                                                                                \
-  }                                                                                  \
-  return ret
-
-int android_logger_clear(struct logger* logger) {
-  LOGGER_FUNCTION(logger, -ENODEV, clear);
-}
-
-/* returns the total size of the log's ring buffer */
-long android_logger_get_log_size(struct logger* logger) {
-  LOGGER_FUNCTION(logger, -ENODEV, getSize);
-}
-
-int android_logger_set_log_size(struct logger* logger, unsigned long size) {
-  LOGGER_FUNCTION(logger, -ENODEV, setSize, size);
-}
-
-/*
- * returns the readable size of the log's ring buffer (that is, amount of the
- * log consumed)
- */
-long android_logger_get_log_readable_size(struct logger* logger) {
-  LOGGER_FUNCTION(logger, -ENODEV, getReadableSize);
-}
-
-/*
- * returns the logger version
- */
-int android_logger_get_log_version(struct logger* logger) {
-  LOGGER_FUNCTION(logger, 4, version);
-}
-
-#define LOGGER_LIST_FUNCTION(logger_list, def, func, args...)                           \
-  struct android_log_transport_context* transp;                                         \
-  struct android_log_logger_list* logger_list_internal =                                \
-      (struct android_log_logger_list*)(logger_list);                                   \
-                                                                                        \
-  ssize_t ret = init_transport_context(logger_list_internal);                           \
-  if (ret < 0) {                                                                        \
-    return ret;                                                                         \
-  }                                                                                     \
-                                                                                        \
-  ret = (def);                                                                          \
-  transport_context_for_each(transp, logger_list_internal) {                            \
-    if (transp->transport && (transp->transport->func)) {                               \
-      ssize_t retval = (transp->transport->func)(logger_list_internal, transp, ##args); \
-      if ((ret >= 0) || (ret == (def))) {                                               \
-        ret = retval;                                                                   \
-      }                                                                                 \
-    }                                                                                   \
-  }                                                                                     \
-  return ret
-
-/*
- * returns statistics
- */
-ssize_t android_logger_get_statistics(struct logger_list* logger_list, char* buf, size_t len) {
-  LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getStats, buf, len);
-}
-
-ssize_t android_logger_get_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
-  LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getPrune, buf, len);
-}
-
-int android_logger_set_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
-  LOGGER_LIST_FUNCTION(logger_list, -ENODEV, setPrune, buf, len);
-}
-
-struct logger_list* android_logger_list_alloc(int mode, unsigned int tail, pid_t pid) {
-  struct android_log_logger_list* logger_list;
-
-  logger_list = static_cast<android_log_logger_list*>(calloc(1, sizeof(*logger_list)));
-  if (!logger_list) {
-    return NULL;
-  }
-
-  list_init(&logger_list->logger);
-  list_init(&logger_list->transport);
   logger_list->mode = mode;
+  logger_list->start = start;
   logger_list->tail = tail;
   logger_list->pid = pid;
 
-  return (struct logger_list*)logger_list;
+  return logger_list;
+}
+
+struct logger_list* android_logger_list_alloc(int mode, unsigned int tail, pid_t pid) {
+  return android_logger_list_alloc_internal(mode, tail, log_time(0, 0), pid);
 }
 
 struct logger_list* android_logger_list_alloc_time(int mode, log_time start, pid_t pid) {
-  struct android_log_logger_list* logger_list;
-
-  logger_list = static_cast<android_log_logger_list*>(calloc(1, sizeof(*logger_list)));
-  if (!logger_list) {
-    return NULL;
-  }
-
-  list_init(&logger_list->logger);
-  list_init(&logger_list->transport);
-  logger_list->mode = mode;
-  logger_list->start = start;
-  logger_list->pid = pid;
-
-  return (struct logger_list*)logger_list;
+  return android_logger_list_alloc_internal(mode, 0, start, pid);
 }
 
-/* android_logger_list_register unimplemented, no use case */
-/* android_logger_list_unregister unimplemented, no use case */
-
 /* Open the named log and add it to the logger list */
 struct logger* android_logger_open(struct logger_list* logger_list, log_id_t logId) {
-  struct android_log_logger_list* logger_list_internal =
-      (struct android_log_logger_list*)logger_list;
-  struct android_log_logger* logger;
-
-  if (!logger_list_internal || (logId >= LOG_ID_MAX)) {
-    goto err;
+  if (!logger_list || (logId >= LOG_ID_MAX)) {
+    return nullptr;
   }
 
-  logger_for_each(logger, logger_list_internal) {
-    if (logger->logId == logId) {
-      goto ok;
-    }
-  }
+  logger_list->log_mask |= 1 << logId;
 
-  logger = static_cast<android_log_logger*>(calloc(1, sizeof(*logger)));
-  if (!logger) {
-    goto err;
-  }
-
-  logger->logId = logId;
-  list_add_tail(&logger_list_internal->logger, &logger->node);
-  logger->parent = logger_list_internal;
-
-  /* Reset known transports to re-evaluate, we just added one */
-  while (!list_empty(&logger_list_internal->transport)) {
-    struct listnode* node = list_head(&logger_list_internal->transport);
-    struct android_log_transport_context* transp =
-        node_to_item(node, struct android_log_transport_context, node);
-
-    list_remove(&transp->node);
-    free(transp);
-  }
-  goto ok;
-
-err:
-  logger = NULL;
-ok:
-  return (struct logger*)logger;
+  uintptr_t logger = logId;
+  logger |= (logger_list->mode & ANDROID_LOG_PSTORE) ? LOGGER_PMSG : LOGGER_LOGD;
+  return reinterpret_cast<struct logger*>(logger);
 }
 
 /* Open the single named log and make it part of a new logger list */
@@ -299,162 +90,60 @@
   return logger_list;
 }
 
-/* Validate log_msg packet, read function has already been null checked */
-static int android_transport_read(struct android_log_logger_list* logger_list,
-                                  struct android_log_transport_context* transp,
-                                  struct log_msg* log_msg) {
-  int ret = (*transp->transport->read)(logger_list, transp, log_msg);
-
-  if (ret > (int)sizeof(*log_msg)) {
-    ret = sizeof(*log_msg);
-  }
-
-  transp->ret = ret;
-
-  /* propagate errors, or make sure len & hdr_size members visible */
-  if (ret < (int)(sizeof(log_msg->entry.len) + sizeof(log_msg->entry.hdr_size))) {
-    if (ret >= (int)sizeof(log_msg->entry.len)) {
-      log_msg->entry.len = 0;
-    }
-    return ret;
-  }
-
-  /* hdr_size correction (logger_entry -> logger_entry_v2+ conversion) */
-  if (log_msg->entry_v2.hdr_size == 0) {
-    log_msg->entry_v2.hdr_size = sizeof(struct logger_entry);
-  }
-  if ((log_msg->entry_v2.hdr_size < sizeof(log_msg->entry_v1)) ||
-      (log_msg->entry_v2.hdr_size > sizeof(log_msg->entry))) {
+int android_logger_list_read(struct logger_list* logger_list, struct log_msg* log_msg) {
+  if (logger_list == nullptr || logger_list->log_mask == 0) {
     return -EINVAL;
   }
 
-  /* len validation */
-  if (ret <= log_msg->entry_v2.hdr_size) {
-    log_msg->entry.len = 0;
+  int ret = 0;
+
+#ifdef __ANDROID__
+  if (logger_list->mode & ANDROID_LOG_PSTORE) {
+    ret = PmsgRead(logger_list, log_msg);
   } else {
-    log_msg->entry.len = ret - log_msg->entry_v2.hdr_size;
+    ret = LogdRead(logger_list, log_msg);
   }
+#endif
+
+  if (ret <= 0) {
+    return ret;
+  }
+
+  if (ret > LOGGER_ENTRY_MAX_LEN) {
+    ret = LOGGER_ENTRY_MAX_LEN;
+  }
+
+  if (ret < static_cast<int>(sizeof(log_msg->entry))) {
+    return -EINVAL;
+  }
+
+  if (log_msg->entry.hdr_size < sizeof(log_msg->entry) ||
+      log_msg->entry.hdr_size >= LOGGER_ENTRY_MAX_LEN - sizeof(log_msg->entry)) {
+    return -EINVAL;
+  }
+
+  if (log_msg->entry.len > ret - log_msg->entry.hdr_size) {
+    return -EINVAL;
+  }
+
+  log_msg->buf[log_msg->entry.len + log_msg->entry.hdr_size] = '\0';
 
   return ret;
 }
 
-/* Read from the selected logs */
-int android_logger_list_read(struct logger_list* logger_list, struct log_msg* log_msg) {
-  struct android_log_transport_context* transp;
-  struct android_log_logger_list* logger_list_internal =
-      (struct android_log_logger_list*)logger_list;
-
-  int ret = init_transport_context(logger_list_internal);
-  if (ret < 0) {
-    return ret;
-  }
-
-  /* at least one transport */
-  transp = node_to_item(logger_list_internal->transport.next, struct android_log_transport_context,
-                        node);
-
-  /* more than one transport? */
-  if (transp->node.next != &logger_list_internal->transport) {
-    /* Poll and merge sort the entries if from multiple transports */
-    struct android_log_transport_context* oldest = NULL;
-    int ret;
-    int polled = 0;
-    do {
-      if (polled) {
-        sched_yield();
-      }
-      ret = -1000;
-      polled = 0;
-      do {
-        int retval = transp->ret;
-        if ((retval > 0) && !transp->logMsg.entry.len) {
-          if (!transp->transport->read) {
-            retval = transp->ret = 0;
-          } else if ((logger_list_internal->mode & ANDROID_LOG_NONBLOCK) ||
-                     !transp->transport->poll) {
-            retval = android_transport_read(logger_list_internal, transp, &transp->logMsg);
-          } else {
-            int pollval = (*transp->transport->poll)(logger_list_internal, transp);
-            if (pollval <= 0) {
-              sched_yield();
-              pollval = (*transp->transport->poll)(logger_list_internal, transp);
-            }
-            polled = 1;
-            if (pollval < 0) {
-              if ((pollval == -EINTR) || (pollval == -EAGAIN)) {
-                return -EAGAIN;
-              }
-              retval = transp->ret = pollval;
-            } else if (pollval > 0) {
-              retval = android_transport_read(logger_list_internal, transp, &transp->logMsg);
-            }
-          }
-        }
-        if (ret < retval) {
-          ret = retval;
-        }
-        if ((transp->ret > 0) && transp->logMsg.entry.len &&
-            (!oldest || (oldest->logMsg.entry.sec > transp->logMsg.entry.sec) ||
-             ((oldest->logMsg.entry.sec == transp->logMsg.entry.sec) &&
-              (oldest->logMsg.entry.nsec > transp->logMsg.entry.nsec)))) {
-          oldest = transp;
-        }
-        transp = node_to_item(transp->node.next, struct android_log_transport_context, node);
-      } while (transp != node_to_item(&logger_list_internal->transport,
-                                      struct android_log_transport_context, node));
-      if (!oldest && (logger_list_internal->mode & ANDROID_LOG_NONBLOCK)) {
-        return (ret < 0) ? ret : -EAGAIN;
-      }
-      transp = node_to_item(logger_list_internal->transport.next,
-                            struct android_log_transport_context, node);
-    } while (!oldest && (ret > 0));
-    if (!oldest) {
-      return ret;
-    }
-    // ret is a positive value less than sizeof(struct log_msg)
-    ret = oldest->ret;
-    if (ret < oldest->logMsg.entry.hdr_size) {
-      // zero truncated header fields.
-      memset(
-          log_msg, 0,
-          (oldest->logMsg.entry.hdr_size > sizeof(oldest->logMsg) ? sizeof(oldest->logMsg)
-                                                                  : oldest->logMsg.entry.hdr_size));
-    }
-    memcpy(log_msg, &oldest->logMsg, ret);
-    oldest->logMsg.entry.len = 0; /* Mark it as copied */
-    return ret;
-  }
-
-  /* if only one, no need to copy into transport_context and merge-sort */
-  return android_transport_read(logger_list_internal, transp, log_msg);
-}
-
 /* Close all the logs */
 void android_logger_list_free(struct logger_list* logger_list) {
-  struct android_log_logger_list* logger_list_internal =
-      (struct android_log_logger_list*)logger_list;
-
-  if (logger_list_internal == NULL) {
+  if (logger_list == NULL) {
     return;
   }
 
-  while (!list_empty(&logger_list_internal->transport)) {
-    struct listnode* node = list_head(&logger_list_internal->transport);
-    struct android_log_transport_context* transp =
-        node_to_item(node, struct android_log_transport_context, node);
-
-    if (transp->transport && transp->transport->close) {
-      (*transp->transport->close)(logger_list_internal, transp);
-    }
-    list_remove(&transp->node);
-    free(transp);
+#ifdef __ANDROID__
+  if (logger_list->mode & ANDROID_LOG_PSTORE) {
+    PmsgClose(logger_list);
+  } else {
+    LogdClose(logger_list);
   }
+#endif
 
-  while (!list_empty(&logger_list_internal->logger)) {
-    struct listnode* node = list_head(&logger_list_internal->logger);
-    struct android_log_logger* logger = node_to_item(node, struct android_log_logger, node);
-    android_logger_free((struct logger*)logger);
-  }
-
-  free(logger_list_internal);
+  free(logger_list);
 }
diff --git a/liblog/logger_write.cpp b/liblog/logger_write.cpp
index 7fa3f43..b1bed80 100644
--- a/liblog/logger_write.cpp
+++ b/liblog/logger_write.cpp
@@ -14,8 +14,11 @@
  * limitations under the License.
  */
 
+#include "logger_write.h"
+
 #include <errno.h>
-#include <stdatomic.h>
+#include <inttypes.h>
+#include <libgen.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/time.h>
@@ -24,32 +27,38 @@
 #include <android/set_abort_message.h>
 #endif
 
-#include <log/event_tag_map.h>
-#include <log/log_transport.h>
+#include <atomic>
+
+#include <android-base/errno_restorer.h>
+#include <android-base/macros.h>
 #include <private/android_filesystem_config.h>
 #include <private/android_logger.h>
 
-#include "config_read.h" /* __android_log_config_read_close() definition */
-#include "config_write.h"
-#include "log_portability.h"
+#include "android/log.h"
+#include "log/log_read.h"
 #include "logger.h"
 #include "uio.h"
 
+#ifdef __ANDROID__
+#include "logd_writer.h"
+#include "pmsg_writer.h"
+#endif
+
+#if defined(__APPLE__)
+#include <pthread.h>
+#elif defined(__linux__) && !defined(__ANDROID__)
+#include <syscall.h>
+#elif defined(_WIN32)
+#include <windows.h>
+#endif
+
+using android::base::ErrnoRestorer;
+
 #define LOG_BUF_SIZE 1024
 
-static int __write_to_log_init(log_id_t, struct iovec* vec, size_t nr);
-static int (*write_to_log)(log_id_t, struct iovec* vec, size_t nr) = __write_to_log_init;
-
-/*
- * This is used by the C++ code to decide if it should write logs through
- * the C code.  Basically, if /dev/socket/logd is available, we're running in
- * the simulator rather than a desktop tool and want to use the device.
- */
-static enum { kLogUninitialized, kLogNotAvailable, kLogAvailable } g_log_status = kLogUninitialized;
-
-static int check_log_uid_permissions() {
 #if defined(__ANDROID__)
-  uid_t uid = __android_log_uid();
+static int check_log_uid_permissions() {
+  uid_t uid = getuid();
 
   /* Matches clientHasLogCredentials() in logd */
   if ((uid != AID_SYSTEM) && (uid != AID_ROOT) && (uid != AID_LOG)) {
@@ -85,404 +94,263 @@
       }
     }
   }
-#endif
   return 0;
 }
-
-static void __android_log_cache_available(struct android_log_transport_write* node) {
-  uint32_t i;
-
-  if (node->logMask) {
-    return;
-  }
-
-  for (i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
-    if (node->write && (i != LOG_ID_KERNEL) &&
-        ((i != LOG_ID_SECURITY) || (check_log_uid_permissions() == 0)) &&
-        (!node->available || ((*node->available)(static_cast<log_id_t>(i)) >= 0))) {
-      node->logMask |= 1 << i;
-    }
-  }
-}
-
-extern "C" int __android_log_dev_available() {
-  struct android_log_transport_write* node;
-
-  if (list_empty(&__android_log_transport_write)) {
-    return kLogUninitialized;
-  }
-
-  write_transport_for_each(node, &__android_log_transport_write) {
-    __android_log_cache_available(node);
-    if (node->logMask) {
-      return kLogAvailable;
-    }
-  }
-  return kLogNotAvailable;
-}
-
-#if defined(__ANDROID__)
-static atomic_uintptr_t tagMap;
 #endif
 
 /*
  * Release any logger resources. A new log write will immediately re-acquire.
  */
 void __android_log_close() {
-  struct android_log_transport_write* transport;
-#if defined(__ANDROID__)
-  EventTagMap* m;
-#endif
-
-  __android_log_lock();
-
-  write_to_log = __write_to_log_init;
-
-  /*
-   * Threads that are actively writing at this point are not held back
-   * by a lock and are at risk of dropping the messages with a return code
-   * -EBADF. Prefer to return error code than add the overhead of a lock to
-   * each log writing call to guarantee delivery. In addition, anyone
-   * calling this is doing so to release the logging resources and shut down,
-   * for them to do so with outstanding log requests in other threads is a
-   * disengenuous use of this function.
-   */
-
-  write_transport_for_each(transport, &__android_log_persist_write) {
-    if (transport->close) {
-      (*transport->close)();
-    }
-  }
-
-  write_transport_for_each(transport, &__android_log_transport_write) {
-    if (transport->close) {
-      (*transport->close)();
-    }
-  }
-
-  __android_log_config_write_close();
-
-#if defined(__ANDROID__)
-  /*
-   * Additional risk here somewhat mitigated by immediately unlock flushing
-   * the processor cache. The multi-threaded race that we choose to accept,
-   * to minimize locking, is an atomic_load in a writer picking up a value
-   * just prior to entering this routine. There will be an use after free.
-   *
-   * Again, anyone calling this is doing so to release the logging resources
-   * is most probably going to quiesce then shut down; or to restart after
-   * a fork so the risk should be non-existent. For this reason we
-   * choose a mitigation stance for efficiency instead of incuring the cost
-   * of a lock for every log write.
-   */
-  m = (EventTagMap*)atomic_exchange(&tagMap, (uintptr_t)0);
-#endif
-
-  __android_log_unlock();
-
-#if defined(__ANDROID__)
-  if (m != (EventTagMap*)(uintptr_t)-1LL) android_closeEventTagMap(m);
+#ifdef __ANDROID__
+  LogdClose();
+  PmsgClose();
 #endif
 }
 
-/* log_init_lock assumed */
-static int __write_to_log_initialize() {
-  struct android_log_transport_write* transport;
-  struct listnode* n;
-  int i = 0, ret = 0;
+#if defined(__GLIBC__) || defined(_WIN32)
+static const char* getprogname() {
+#if defined(__GLIBC__)
+  return program_invocation_short_name;
+#elif defined(_WIN32)
+  static bool first = true;
+  static char progname[MAX_PATH] = {};
 
-  __android_log_config_write();
-  write_transport_for_each_safe(transport, n, &__android_log_transport_write) {
-    __android_log_cache_available(transport);
-    if (!transport->logMask) {
-      list_remove(&transport->node);
-      continue;
-    }
-    if (!transport->open || ((*transport->open)() < 0)) {
-      if (transport->close) {
-        (*transport->close)();
-      }
-      list_remove(&transport->node);
-      continue;
-    }
-    ++ret;
-  }
-  write_transport_for_each_safe(transport, n, &__android_log_persist_write) {
-    __android_log_cache_available(transport);
-    if (!transport->logMask) {
-      list_remove(&transport->node);
-      continue;
-    }
-    if (!transport->open || ((*transport->open)() < 0)) {
-      if (transport->close) {
-        (*transport->close)();
-      }
-      list_remove(&transport->node);
-      continue;
-    }
-    ++i;
-  }
-  if (!ret && !i) {
-    return -ENODEV;
+  if (first) {
+    char path[PATH_MAX + 1];
+    DWORD result = GetModuleFileName(nullptr, path, sizeof(path) - 1);
+    if (result == 0 || result == sizeof(path) - 1) return "";
+    path[PATH_MAX - 1] = 0;
+
+    char* path_basename = basename(path);
+
+    snprintf(progname, sizeof(progname), "%s", path_basename);
+    first = false;
   }
 
-  return ret;
+  return progname;
+#endif
+}
+#endif
+
+// It's possible for logging to happen during static initialization before our globals are
+// initialized, so we place this std::string in a function such that it is initialized on the first
+// call.
+std::string& GetDefaultTag() {
+  static std::string default_tag = getprogname();
+  return default_tag;
 }
 
-/*
- * Extract a 4-byte value from a byte stream. le32toh open coded
- */
-static inline uint32_t get4LE(const uint8_t* src) {
-  return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
+void __android_log_set_default_tag(const char* tag) {
+  GetDefaultTag().assign(tag, 0, LOGGER_ENTRY_MAX_PAYLOAD);
 }
 
-static int __write_to_log_daemon(log_id_t log_id, struct iovec* vec, size_t nr) {
-  struct android_log_transport_write* node;
-  int ret, save_errno;
+static std::atomic_int32_t minimum_log_priority = ANDROID_LOG_DEFAULT;
+int32_t __android_log_set_minimum_priority(int32_t priority) {
+  return minimum_log_priority.exchange(priority, std::memory_order_relaxed);
+}
+
+int32_t __android_log_get_minimum_priority() {
+  return minimum_log_priority;
+}
+
+#ifdef __ANDROID__
+static __android_logger_function logger_function = __android_log_logd_logger;
+#else
+static __android_logger_function logger_function = __android_log_stderr_logger;
+#endif
+
+void __android_log_set_logger(__android_logger_function logger) {
+  logger_function = logger;
+}
+
+void __android_log_default_aborter(const char* abort_message) {
+#ifdef __ANDROID__
+  android_set_abort_message(abort_message);
+#else
+  UNUSED(abort_message);
+#endif
+  abort();
+}
+
+static __android_aborter_function aborter_function = __android_log_default_aborter;
+
+void __android_log_set_aborter(__android_aborter_function aborter) {
+  aborter_function = aborter;
+}
+
+void __android_log_call_aborter(const char* abort_message) {
+  aborter_function(abort_message);
+}
+
+#ifdef __ANDROID__
+static int write_to_log(log_id_t log_id, struct iovec* vec, size_t nr) {
+  int ret;
   struct timespec ts;
-  size_t len, i;
 
-  for (len = i = 0; i < nr; ++i) {
-    len += vec[i].iov_len;
-  }
-  if (!len) {
+  if (log_id == LOG_ID_KERNEL) {
     return -EINVAL;
   }
 
-  save_errno = errno;
-#if defined(__ANDROID__)
   clock_gettime(android_log_clockid(), &ts);
 
   if (log_id == LOG_ID_SECURITY) {
     if (vec[0].iov_len < 4) {
-      errno = save_errno;
       return -EINVAL;
     }
 
     ret = check_log_uid_permissions();
     if (ret < 0) {
-      errno = save_errno;
       return ret;
     }
     if (!__android_log_security()) {
       /* If only we could reset downstream logd counter */
-      errno = save_errno;
       return -EPERM;
     }
   } else if (log_id == LOG_ID_EVENTS || log_id == LOG_ID_STATS) {
-    const char* tag;
-    size_t len;
-    EventTagMap *m, *f;
-
     if (vec[0].iov_len < 4) {
-      errno = save_errno;
       return -EINVAL;
     }
-
-    tag = NULL;
-    len = 0;
-    f = NULL;
-    m = (EventTagMap*)atomic_load(&tagMap);
-
-    if (!m) {
-      ret = __android_log_trylock();
-      m = (EventTagMap*)atomic_load(&tagMap); /* trylock flush cache */
-      if (!m) {
-        m = android_openEventTagMap(NULL);
-        if (ret) { /* trylock failed, use local copy, mark for close */
-          f = m;
-        } else {
-          if (!m) { /* One chance to open map file */
-            m = (EventTagMap*)(uintptr_t)-1LL;
-          }
-          atomic_store(&tagMap, (uintptr_t)m);
-        }
-      }
-      if (!ret) { /* trylock succeeded, unlock */
-        __android_log_unlock();
-      }
-    }
-    if (m && (m != (EventTagMap*)(uintptr_t)-1LL)) {
-      tag = android_lookupEventTag_len(m, &len, get4LE(static_cast<uint8_t*>(vec[0].iov_base)));
-    }
-    ret = __android_log_is_loggable_len(ANDROID_LOG_INFO, tag, len, ANDROID_LOG_VERBOSE);
-    if (f) { /* local copy marked for close */
-      android_closeEventTagMap(f);
-    }
-    if (!ret) {
-      errno = save_errno;
-      return -EPERM;
-    }
-  } else {
-    /* Validate the incoming tag, tag content can not split across iovec */
-    char prio = ANDROID_LOG_VERBOSE;
-    const char* tag = static_cast<const char*>(vec[0].iov_base);
-    size_t len = vec[0].iov_len;
-    if (!tag) {
-      len = 0;
-    }
-    if (len > 0) {
-      prio = *tag;
-      if (len > 1) {
-        --len;
-        ++tag;
-      } else {
-        len = vec[1].iov_len;
-        tag = ((const char*)vec[1].iov_base);
-        if (!tag) {
-          len = 0;
-        }
-      }
-    }
-    /* tag must be nul terminated */
-    if (tag && strnlen(tag, len) >= len) {
-      tag = NULL;
-    }
-
-    if (!__android_log_is_loggable_len(prio, tag, len - 1, ANDROID_LOG_VERBOSE)) {
-      errno = save_errno;
-      return -EPERM;
-    }
-  }
-#else
-  /* simulate clock_gettime(CLOCK_REALTIME, &ts); */
-  {
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    ts.tv_sec = tv.tv_sec;
-    ts.tv_nsec = tv.tv_usec * 1000;
-  }
-#endif
-
-  ret = 0;
-  i = 1 << log_id;
-  write_transport_for_each(node, &__android_log_transport_write) {
-    if (node->logMask & i) {
-      ssize_t retval;
-      retval = (*node->write)(log_id, &ts, vec, nr);
-      if (ret >= 0) {
-        ret = retval;
-      }
-    }
   }
 
-  write_transport_for_each(node, &__android_log_persist_write) {
-    if (node->logMask & i) {
-      (void)(*node->write)(log_id, &ts, vec, nr);
-    }
-  }
+  ret = LogdWrite(log_id, &ts, vec, nr);
+  PmsgWrite(log_id, &ts, vec, nr);
 
-  errno = save_errno;
   return ret;
 }
+#else
+static int write_to_log(log_id_t, struct iovec*, size_t) {
+  // Non-Android text logs should go to __android_log_stderr_logger, not here.
+  // Non-Android binary logs are always dropped.
+  return 1;
+}
+#endif
 
-static int __write_to_log_init(log_id_t log_id, struct iovec* vec, size_t nr) {
-  int ret, save_errno = errno;
+// Copied from base/threads.cpp
+static uint64_t GetThreadId() {
+#if defined(__BIONIC__)
+  return gettid();
+#elif defined(__APPLE__)
+  uint64_t tid;
+  pthread_threadid_np(NULL, &tid);
+  return tid;
+#elif defined(__linux__)
+  return syscall(__NR_gettid);
+#elif defined(_WIN32)
+  return GetCurrentThreadId();
+#endif
+}
 
-  __android_log_lock();
+void __android_log_stderr_logger(const struct __android_log_message* log_message) {
+  struct tm now;
+  time_t t = time(nullptr);
 
-  if (write_to_log == __write_to_log_init) {
-    ret = __write_to_log_initialize();
-    if (ret < 0) {
-      __android_log_unlock();
-      if (!list_empty(&__android_log_persist_write)) {
-        __write_to_log_daemon(log_id, vec, nr);
-      }
-      errno = save_errno;
-      return ret;
-    }
+#if defined(_WIN32)
+  localtime_s(&now, &t);
+#else
+  localtime_r(&t, &now);
+#endif
 
-    write_to_log = __write_to_log_daemon;
+  char timestamp[32];
+  strftime(timestamp, sizeof(timestamp), "%m-%d %H:%M:%S", &now);
+
+  static const char log_characters[] = "XXVDIWEF";
+  static_assert(arraysize(log_characters) - 1 == ANDROID_LOG_SILENT,
+                "Mismatch in size of log_characters and values in android_LogPriority");
+  int32_t priority =
+      log_message->priority > ANDROID_LOG_SILENT ? ANDROID_LOG_FATAL : log_message->priority;
+  char priority_char = log_characters[priority];
+  uint64_t tid = GetThreadId();
+
+  if (log_message->file != nullptr) {
+    fprintf(stderr, "%s %c %s %5d %5" PRIu64 " %s:%u] %s\n",
+            log_message->tag ? log_message->tag : "nullptr", priority_char, timestamp, getpid(),
+            tid, log_message->file, log_message->line, log_message->message);
+  } else {
+    fprintf(stderr, "%s %c %s %5d %5" PRIu64 " %s\n",
+            log_message->tag ? log_message->tag : "nullptr", priority_char, timestamp, getpid(),
+            tid, log_message->message);
   }
+}
 
-  __android_log_unlock();
+void __android_log_logd_logger(const struct __android_log_message* log_message) {
+  int buffer_id = log_message->buffer_id == LOG_ID_DEFAULT ? LOG_ID_MAIN : log_message->buffer_id;
 
-  ret = write_to_log(log_id, vec, nr);
-  errno = save_errno;
-  return ret;
+  struct iovec vec[3];
+  vec[0].iov_base =
+      const_cast<unsigned char*>(reinterpret_cast<const unsigned char*>(&log_message->priority));
+  vec[0].iov_len = 1;
+  vec[1].iov_base = const_cast<void*>(static_cast<const void*>(log_message->tag));
+  vec[1].iov_len = strlen(log_message->tag) + 1;
+  vec[2].iov_base = const_cast<void*>(static_cast<const void*>(log_message->message));
+  vec[2].iov_len = strlen(log_message->message) + 1;
+
+  write_to_log(static_cast<log_id_t>(buffer_id), vec, 3);
 }
 
 int __android_log_write(int prio, const char* tag, const char* msg) {
   return __android_log_buf_write(LOG_ID_MAIN, prio, tag, msg);
 }
 
-int __android_log_buf_write(int bufID, int prio, const char* tag, const char* msg) {
-  struct iovec vec[3];
-  char tmp_tag[32];
+void __android_log_write_log_message(__android_log_message* log_message) {
+  ErrnoRestorer errno_restorer;
 
-  if (!tag) tag = "";
-
-  /* XXX: This needs to go! */
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wstring-plus-int"
-  if (bufID != LOG_ID_RADIO) {
-    switch (tag[0]) {
-      case 'H':
-        if (strcmp(tag + 1, "HTC_RIL" + 1)) break;
-        goto inform;
-      case 'R':
-        /* Any log tag with "RIL" as the prefix */
-        if (strncmp(tag + 1, "RIL" + 1, strlen("RIL") - 1)) break;
-        goto inform;
-      case 'Q':
-        /* Any log tag with "QC_RIL" as the prefix */
-        if (strncmp(tag + 1, "QC_RIL" + 1, strlen("QC_RIL") - 1)) break;
-        goto inform;
-      case 'I':
-        /* Any log tag with "IMS" as the prefix */
-        if (strncmp(tag + 1, "IMS" + 1, strlen("IMS") - 1)) break;
-        goto inform;
-      case 'A':
-        if (strcmp(tag + 1, "AT" + 1)) break;
-        goto inform;
-      case 'G':
-        if (strcmp(tag + 1, "GSM" + 1)) break;
-        goto inform;
-      case 'S':
-        if (strcmp(tag + 1, "STK" + 1) && strcmp(tag + 1, "SMS" + 1)) break;
-        goto inform;
-      case 'C':
-        if (strcmp(tag + 1, "CDMA" + 1)) break;
-        goto inform;
-      case 'P':
-        if (strcmp(tag + 1, "PHONE" + 1)) break;
-      /* FALLTHRU */
-      inform:
-        bufID = LOG_ID_RADIO;
-        snprintf(tmp_tag, sizeof(tmp_tag), "use-Rlog/RLOG-%s", tag);
-        tag = tmp_tag;
-        [[fallthrough]];
-      default:
-        break;
-    }
+  if (log_message->buffer_id != LOG_ID_DEFAULT && log_message->buffer_id != LOG_ID_MAIN &&
+      log_message->buffer_id != LOG_ID_SYSTEM && log_message->buffer_id != LOG_ID_RADIO &&
+      log_message->buffer_id != LOG_ID_CRASH) {
+    return;
   }
-#pragma clang diagnostic pop
+
+  if (log_message->tag == nullptr) {
+    log_message->tag = GetDefaultTag().c_str();
+  }
 
 #if __BIONIC__
-  if (prio == ANDROID_LOG_FATAL) {
-    android_set_abort_message(msg);
+  if (log_message->priority == ANDROID_LOG_FATAL) {
+    android_set_abort_message(log_message->message);
   }
 #endif
 
-  vec[0].iov_base = (unsigned char*)&prio;
-  vec[0].iov_len = 1;
-  vec[1].iov_base = (void*)tag;
-  vec[1].iov_len = strlen(tag) + 1;
-  vec[2].iov_base = (void*)msg;
-  vec[2].iov_len = strlen(msg) + 1;
+  logger_function(log_message);
+}
 
-  return write_to_log(static_cast<log_id_t>(bufID), vec, 3);
+int __android_log_buf_write(int bufID, int prio, const char* tag, const char* msg) {
+  ErrnoRestorer errno_restorer;
+
+  if (!__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE)) {
+    return -EPERM;
+  }
+
+  __android_log_message log_message = {
+      sizeof(__android_log_message), bufID, prio, tag, nullptr, 0, msg};
+  __android_log_write_log_message(&log_message);
+  return 1;
 }
 
 int __android_log_vprint(int prio, const char* tag, const char* fmt, va_list ap) {
+  ErrnoRestorer errno_restorer;
+
+  if (!__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE)) {
+    return -EPERM;
+  }
+
   char buf[LOG_BUF_SIZE];
 
   vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
 
-  return __android_log_write(prio, tag, buf);
+  __android_log_message log_message = {
+      sizeof(__android_log_message), LOG_ID_MAIN, prio, tag, nullptr, 0, buf};
+  __android_log_write_log_message(&log_message);
+  return 1;
 }
 
 int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
+  ErrnoRestorer errno_restorer;
+
+  if (!__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE)) {
+    return -EPERM;
+  }
+
   va_list ap;
   char buf[LOG_BUF_SIZE];
 
@@ -490,10 +358,19 @@
   vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
   va_end(ap);
 
-  return __android_log_write(prio, tag, buf);
+  __android_log_message log_message = {
+      sizeof(__android_log_message), LOG_ID_MAIN, prio, tag, nullptr, 0, buf};
+  __android_log_write_log_message(&log_message);
+  return 1;
 }
 
 int __android_log_buf_print(int bufID, int prio, const char* tag, const char* fmt, ...) {
+  ErrnoRestorer errno_restorer;
+
+  if (!__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE)) {
+    return -EPERM;
+  }
+
   va_list ap;
   char buf[LOG_BUF_SIZE];
 
@@ -501,7 +378,10 @@
   vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
   va_end(ap);
 
-  return __android_log_buf_write(bufID, prio, tag, buf);
+  __android_log_message log_message = {
+      sizeof(__android_log_message), bufID, prio, tag, nullptr, 0, buf};
+  __android_log_write_log_message(&log_message);
+  return 1;
 }
 
 void __android_log_assert(const char* cond, const char* tag, const char* fmt, ...) {
@@ -529,11 +409,13 @@
   TEMP_FAILURE_RETRY(write(2, "\n", 1));
 
   __android_log_write(ANDROID_LOG_FATAL, tag, buf);
-  abort(); /* abort so we have a chance to debug the situation */
-           /* NOTREACHED */
+  __android_log_call_aborter(buf);
+  abort();
 }
 
 int __android_log_bwrite(int32_t tag, const void* payload, size_t len) {
+  ErrnoRestorer errno_restorer;
+
   struct iovec vec[2];
 
   vec[0].iov_base = &tag;
@@ -545,6 +427,8 @@
 }
 
 int __android_log_stats_bwrite(int32_t tag, const void* payload, size_t len) {
+  ErrnoRestorer errno_restorer;
+
   struct iovec vec[2];
 
   vec[0].iov_base = &tag;
@@ -556,6 +440,8 @@
 }
 
 int __android_log_security_bwrite(int32_t tag, const void* payload, size_t len) {
+  ErrnoRestorer errno_restorer;
+
   struct iovec vec[2];
 
   vec[0].iov_base = &tag;
@@ -572,6 +458,8 @@
  * handy if we just want to dump an integer into the log.
  */
 int __android_log_btwrite(int32_t tag, char type, const void* payload, size_t len) {
+  ErrnoRestorer errno_restorer;
+
   struct iovec vec[3];
 
   vec[0].iov_base = &tag;
@@ -589,6 +477,8 @@
  * event log.
  */
 int __android_log_bswrite(int32_t tag, const char* payload) {
+  ErrnoRestorer errno_restorer;
+
   struct iovec vec[4];
   char type = EVENT_TYPE_STRING;
   uint32_t len = strlen(payload);
@@ -610,6 +500,8 @@
  * security log.
  */
 int __android_log_security_bswrite(int32_t tag, const char* payload) {
+  ErrnoRestorer errno_restorer;
+
   struct iovec vec[4];
   char type = EVENT_TYPE_STRING;
   uint32_t len = strlen(payload);
@@ -625,82 +517,3 @@
 
   return write_to_log(LOG_ID_SECURITY, vec, 4);
 }
-
-static int __write_to_log_null(log_id_t log_id, struct iovec* vec, size_t nr) {
-  size_t len, i;
-
-  if ((log_id < LOG_ID_MIN) || (log_id >= LOG_ID_MAX)) {
-    return -EINVAL;
-  }
-
-  for (len = i = 0; i < nr; ++i) {
-    len += vec[i].iov_len;
-  }
-  if (!len) {
-    return -EINVAL;
-  }
-  return len;
-}
-
-/* Following functions need access to our internal write_to_log status */
-
-int __android_log_transport;
-
-int android_set_log_transport(int transport_flag) {
-  int retval;
-
-  if (transport_flag < 0) {
-    return -EINVAL;
-  }
-
-  retval = LOGGER_NULL;
-
-  __android_log_lock();
-
-  if (transport_flag & LOGGER_NULL) {
-    write_to_log = __write_to_log_null;
-
-    __android_log_unlock();
-
-    return retval;
-  }
-
-  __android_log_transport &= LOGGER_LOGD | LOGGER_STDERR;
-
-  transport_flag &= LOGGER_LOGD | LOGGER_STDERR;
-
-  if (__android_log_transport != transport_flag) {
-    __android_log_transport = transport_flag;
-    __android_log_config_write_close();
-    __android_log_config_read_close();
-
-    write_to_log = __write_to_log_init;
-    /* generically we only expect these two values for write_to_log */
-  } else if ((write_to_log != __write_to_log_init) && (write_to_log != __write_to_log_daemon)) {
-    write_to_log = __write_to_log_init;
-  }
-
-  retval = __android_log_transport;
-
-  __android_log_unlock();
-
-  return retval;
-}
-
-int android_get_log_transport() {
-  int ret = LOGGER_DEFAULT;
-
-  __android_log_lock();
-  if (write_to_log == __write_to_log_null) {
-    ret = LOGGER_NULL;
-  } else {
-    __android_log_transport &= LOGGER_LOGD | LOGGER_STDERR;
-    ret = __android_log_transport;
-    if ((write_to_log != __write_to_log_init) && (write_to_log != __write_to_log_daemon)) {
-      ret = -EINVAL;
-    }
-  }
-  __android_log_unlock();
-
-  return ret;
-}
diff --git a/liblog/logger_write.h b/liblog/logger_write.h
new file mode 100644
index 0000000..eee2778
--- /dev/null
+++ b/liblog/logger_write.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+std::string& GetDefaultTag();
diff --git a/liblog/logprint.cpp b/liblog/logprint.cpp
index bc056cb..5c69bf8 100644
--- a/liblog/logprint.cpp
+++ b/liblog/logprint.cpp
@@ -26,19 +26,19 @@
 #ifndef __MINGW32__
 #include <pwd.h>
 #endif
-#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/param.h>
 #include <sys/types.h>
+#include <wchar.h>
 
 #include <cutils/list.h>
+
 #include <log/log.h>
 #include <log/logprint.h>
-
-#include "log_portability.h"
+#include <private/android_logger.h>
 
 #define MS_PER_NSEC 1000000
 #define US_PER_NSEC 1000
@@ -291,8 +291,10 @@
   return 1;
 }
 
+#ifndef __MINGW32__
 static const char tz[] = "TZ";
 static const char utc[] = "UTC";
+#endif
 
 /**
  * Returns FORMAT_OFF on invalid string
@@ -507,12 +509,12 @@
    * format: <priority:1><tag:N>\0<message:N>\0
    *
    * tag str
-   *   starts at buf->msg+1
+   *   starts at buf + buf->hdr_size + 1
    * msg
-   *   starts at buf->msg+1+len(tag)+1
+   *   starts at buf + buf->hdr_size + 1 + len(tag) + 1
    *
-   * The message may have been truncated by the kernel log driver.
-   * When that happens, we must null-terminate the message ourselves.
+   * The message may have been truncated.  When that happens, we must null-terminate the message
+   * ourselves.
    */
   if (buf->len < 3) {
     /*
@@ -527,19 +529,13 @@
   int msgEnd = -1;
 
   int i;
-  char* msg = buf->msg;
-  struct logger_entry_v2* buf2 = (struct logger_entry_v2*)buf;
-  if (buf2->hdr_size) {
-    if ((buf2->hdr_size < sizeof(((struct log_msg*)NULL)->entry_v1)) ||
-        (buf2->hdr_size > sizeof(((struct log_msg*)NULL)->entry))) {
-      fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
-      return -1;
-    }
-    msg = ((char*)buf2) + buf2->hdr_size;
-    if (buf2->hdr_size >= sizeof(struct logger_entry_v4)) {
-      entry->uid = ((struct logger_entry_v4*)buf)->uid;
-    }
+  if (buf->hdr_size < sizeof(logger_entry)) {
+    fprintf(stderr, "+++ LOG: hdr_size must be at least as big as struct logger_entry\n");
+    return -1;
   }
+  char* msg = reinterpret_cast<char*>(buf) + buf->hdr_size;
+  entry->uid = buf->uid;
+
   for (i = 1; i < buf->len; i++) {
     if (msg[i] == '\0') {
       if (msgStart == -1) {
@@ -580,24 +576,6 @@
   return 0;
 }
 
-/*
- * Extract a 4-byte value from a byte stream.
- */
-static inline uint32_t get4LE(const uint8_t* src) {
-  return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-}
-
-/*
- * Extract an 8-byte value from a byte stream.
- */
-static inline uint64_t get8LE(const uint8_t* src) {
-  uint32_t low, high;
-
-  low = src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-  high = src[4] | (src[5] << 8) | (src[6] << 16) | (src[7] << 24);
-  return ((uint64_t)high << 32) | (uint64_t)low;
-}
-
 static bool findChar(const char** cp, size_t* len, int c) {
   while ((*len) && isspace(*(*cp))) {
     ++(*cp);
@@ -651,8 +629,7 @@
 
   if (eventDataLen < 1) return -1;
 
-  type = *eventData++;
-  eventDataLen--;
+  type = *eventData;
 
   cp = NULL;
   len = 0;
@@ -741,22 +718,24 @@
     case EVENT_TYPE_INT:
       /* 32-bit signed int */
       {
-        int32_t ival;
-
-        if (eventDataLen < 4) return -1;
-        ival = get4LE(eventData);
-        eventData += 4;
-        eventDataLen -= 4;
-
-        lval = ival;
+        if (eventDataLen < sizeof(android_event_int_t)) return -1;
+        auto* event_int = reinterpret_cast<const android_event_int_t*>(eventData);
+        lval = event_int->data;
+        eventData += sizeof(android_event_int_t);
+        eventDataLen -= sizeof(android_event_int_t);
       }
       goto pr_lval;
     case EVENT_TYPE_LONG:
       /* 64-bit signed long */
-      if (eventDataLen < 8) return -1;
-      lval = get8LE(eventData);
-      eventData += 8;
-      eventDataLen -= 8;
+      if (eventDataLen < sizeof(android_event_long_t)) {
+        return -1;
+      }
+      {
+        auto* event_long = reinterpret_cast<const android_event_long_t*>(eventData);
+        lval = event_long->data;
+      }
+      eventData += sizeof(android_event_long_t);
+      eventDataLen -= sizeof(android_event_long_t);
     pr_lval:
       outCount = snprintf(outBuf, outBufLen, "%" PRId64, lval);
       if (outCount < outBufLen) {
@@ -770,14 +749,11 @@
     case EVENT_TYPE_FLOAT:
       /* float */
       {
-        uint32_t ival;
-        float fval;
-
-        if (eventDataLen < 4) return -1;
-        ival = get4LE(eventData);
-        fval = *(float*)&ival;
-        eventData += 4;
-        eventDataLen -= 4;
+        if (eventDataLen < sizeof(android_event_float_t)) return -1;
+        auto* event_float = reinterpret_cast<const android_event_float_t*>(eventData);
+        float fval = event_float->data;
+        eventData += sizeof(android_event_int_t);
+        eventDataLen -= sizeof(android_event_int_t);
 
         outCount = snprintf(outBuf, outBufLen, "%f", fval);
         if (outCount < outBufLen) {
@@ -792,12 +768,11 @@
     case EVENT_TYPE_STRING:
       /* UTF-8 chars, not NULL-terminated */
       {
-        unsigned int strLen;
-
-        if (eventDataLen < 4) return -1;
-        strLen = get4LE(eventData);
-        eventData += 4;
-        eventDataLen -= 4;
+        if (eventDataLen < sizeof(android_event_string_t)) return -1;
+        auto* event_string = reinterpret_cast<const android_event_string_t*>(eventData);
+        unsigned int strLen = event_string->length;
+        eventData += sizeof(android_event_string_t);
+        eventDataLen -= sizeof(android_event_string_t);
 
         if (eventDataLen < strLen) {
           result = -1; /* mark truncated */
@@ -830,20 +805,19 @@
     case EVENT_TYPE_LIST:
       /* N items, all different types */
       {
-        unsigned char count;
-        int i;
+        if (eventDataLen < sizeof(android_event_list_t)) return -1;
+        auto* event_list = reinterpret_cast<const android_event_list_t*>(eventData);
 
-        if (eventDataLen < 1) return -1;
-
-        count = *eventData++;
-        eventDataLen--;
+        int8_t count = event_list->element_count;
+        eventData += sizeof(android_event_list_t);
+        eventDataLen -= sizeof(android_event_list_t);
 
         if (outBufLen <= 0) goto no_room;
 
         *outBuf++ = '[';
         outBufLen--;
 
-        for (i = 0; i < count; i++) {
+        for (int i = 0; i < count; i++) {
           result = android_log_printBinaryEvent(&eventData, &eventDataLen, &outBuf, &outBufLen,
                                                 fmtStr, fmtLen);
           if (result != 0) goto bail;
@@ -1011,32 +985,21 @@
   entry->pid = buf->pid;
   entry->tid = buf->tid;
 
-  /*
-   * Pull the tag out, fill in some additional details based on incoming
-   * buffer version (v3 adds lid, v4 adds uid).
-   */
-  eventData = (const unsigned char*)buf->msg;
-  struct logger_entry_v2* buf2 = (struct logger_entry_v2*)buf;
-  if (buf2->hdr_size) {
-    if ((buf2->hdr_size < sizeof(((struct log_msg*)NULL)->entry_v1)) ||
-        (buf2->hdr_size > sizeof(((struct log_msg*)NULL)->entry))) {
-      fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
-      return -1;
-    }
-    eventData = ((unsigned char*)buf2) + buf2->hdr_size;
-    if ((buf2->hdr_size >= sizeof(struct logger_entry_v3)) &&
-        (((struct logger_entry_v3*)buf)->lid == LOG_ID_SECURITY)) {
-      entry->priority = ANDROID_LOG_WARN;
-    }
-    if (buf2->hdr_size >= sizeof(struct logger_entry_v4)) {
-      entry->uid = ((struct logger_entry_v4*)buf)->uid;
-    }
+  if (buf->hdr_size < sizeof(logger_entry)) {
+    fprintf(stderr, "+++ LOG: hdr_size must be at least as big as struct logger_entry\n");
+    return -1;
   }
+  eventData = reinterpret_cast<unsigned char*>(buf) + buf->hdr_size;
+  if (buf->lid == LOG_ID_SECURITY) {
+    entry->priority = ANDROID_LOG_WARN;
+  }
+  entry->uid = buf->uid;
   inCount = buf->len;
-  if (inCount < 4) return -1;
-  tagIndex = get4LE(eventData);
-  eventData += 4;
-  inCount -= 4;
+  if (inCount < sizeof(android_event_header_t)) return -1;
+  auto* event_header = reinterpret_cast<const android_event_header_t*>(eventData);
+  tagIndex = event_header->tag;
+  eventData += sizeof(android_event_header_t);
+  inCount -= sizeof(android_event_header_t);
 
   entry->tagLen = 0;
   entry->tag = NULL;
@@ -1085,10 +1048,7 @@
   }
   if ((result == 1) && fmtStr) {
     /* We overflowed :-(, let's repaint the line w/o format dressings */
-    eventData = (const unsigned char*)buf->msg;
-    if (buf2->hdr_size) {
-      eventData = ((unsigned char*)buf2) + buf2->hdr_size;
-    }
+    eventData = reinterpret_cast<unsigned char*>(buf) + buf->hdr_size;
     eventData += 4;
     outBuf = messageBuf;
     outRemaining = messageBufLen - 1;
@@ -1134,66 +1094,13 @@
 }
 
 /*
- * One utf8 character at a time
- *
- * Returns the length of the utf8 character in the buffer,
- * or -1 if illegal or truncated
- *
- * Open coded from libutils/Unicode.cpp, borrowed from utf8_length(),
- * can not remove from here because of library circular dependencies.
- * Expect one-day utf8_character_length with the same signature could
- * _also_ be part of libutils/Unicode.cpp if its usefullness needs to
- * propagate globally.
- */
-LIBLOG_WEAK ssize_t utf8_character_length(const char* src, size_t len) {
-  const char* cur = src;
-  const char first_char = *cur++;
-  static const uint32_t kUnicodeMaxCodepoint = 0x0010FFFF;
-  int32_t mask, to_ignore_mask;
-  size_t num_to_read;
-  uint32_t utf32;
-
-  if ((first_char & 0x80) == 0) { /* ASCII */
-    return first_char ? 1 : -1;
-  }
-
-  /*
-   * (UTF-8's character must not be like 10xxxxxx,
-   *  but 110xxxxx, 1110xxxx, ... or 1111110x)
-   */
-  if ((first_char & 0x40) == 0) {
-    return -1;
-  }
-
-  for (utf32 = 1, num_to_read = 1, mask = 0x40, to_ignore_mask = 0x80;
-       num_to_read < 5 && (first_char & mask); num_to_read++, to_ignore_mask |= mask, mask >>= 1) {
-    if (num_to_read > len) {
-      return -1;
-    }
-    if ((*cur & 0xC0) != 0x80) { /* can not be 10xxxxxx? */
-      return -1;
-    }
-    utf32 = (utf32 << 6) + (*cur++ & 0b00111111);
-  }
-  /* "first_char" must be (110xxxxx - 11110xxx) */
-  if (num_to_read >= 5) {
-    return -1;
-  }
-  to_ignore_mask |= mask;
-  utf32 |= ((~to_ignore_mask) & first_char) << (6 * (num_to_read - 1));
-  if (utf32 > kUnicodeMaxCodepoint) {
-    return -1;
-  }
-  return num_to_read;
-}
-
-/*
  * Convert to printable from message to p buffer, return string length. If p is
  * NULL, do not copy, but still return the expected string length.
  */
-static size_t convertPrintable(char* p, const char* message, size_t messageLen) {
+size_t convertPrintable(char* p, const char* message, size_t messageLen) {
   char* begin = p;
   bool print = p != NULL;
+  mbstate_t mb_state = {};
 
   while (messageLen) {
     char buf[6];
@@ -1201,11 +1108,10 @@
     if ((size_t)len > messageLen) {
       len = messageLen;
     }
-    len = utf8_character_length(message, len);
+    len = mbrtowc(nullptr, message, len, &mb_state);
 
     if (len < 0) {
-      snprintf(buf, sizeof(buf), ((messageLen > 1) && isdigit(message[1])) ? "\\%03o" : "\\%o",
-               *message & 0377);
+      snprintf(buf, sizeof(buf), "\\x%02X", static_cast<unsigned char>(*message));
       len = 1;
     } else {
       buf[0] = '\0';
@@ -1225,7 +1131,7 @@
         } else if (*message == '\\') {
           strcpy(buf, "\\\\");
         } else if ((*message < ' ') || (*message & 0x80)) {
-          snprintf(buf, sizeof(buf), "\\%o", *message & 0377);
+          snprintf(buf, sizeof(buf), "\\x%02X", static_cast<unsigned char>(*message));
         }
       }
       if (!buf[0]) {
@@ -1243,6 +1149,7 @@
   return p - begin;
 }
 
+#ifdef __ANDROID__
 static char* readSeconds(char* e, struct timespec* t) {
   unsigned long multiplier;
   char* p;
@@ -1283,7 +1190,6 @@
   return (long long)now->tv_sec * NS_PER_SEC + now->tv_nsec;
 }
 
-#ifdef __ANDROID__
 static void convertMonotonic(struct timespec* result, const AndroidLogEntry* entry) {
   struct listnode* node;
   struct conversionList {
@@ -1614,12 +1520,7 @@
  * This code is Android specific, bionic guarantees that
  * calls to non-reentrant getpwuid() are thread safe.
  */
-#if !defined(__MINGW32__)
-#if (FAKE_LOG_DEVICE == 0)
-#ifndef __BIONIC__
-#warning "This code assumes that getpwuid is thread safe, only true with Bionic!"
-#endif
-#endif
+#ifdef __ANDROID__
       struct passwd* pwd = getpwuid(entry->uid);
       if (pwd && (strlen(pwd->pw_name) <= 5)) {
         snprintf(uid, sizeof(uid), "%5s:", pwd->pw_name);
diff --git a/liblog/pmsg_reader.cpp b/liblog/pmsg_reader.cpp
index ba27fd7..3bdc30f 100644
--- a/liblog/pmsg_reader.cpp
+++ b/liblog/pmsg_reader.cpp
@@ -14,136 +14,33 @@
  * limitations under the License.
  */
 
+#include "pmsg_reader.h"
+
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 
-#include <private/android_filesystem_config.h>
+#include <cutils/list.h>
 #include <private/android_logger.h>
 
-#include "config_read.h"
 #include "logger.h"
 
-static int pmsgAvailable(log_id_t logId);
-static int pmsgVersion(struct android_log_logger* logger,
-                       struct android_log_transport_context* transp);
-static int pmsgRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp, struct log_msg* log_msg);
-static void pmsgClose(struct android_log_logger_list* logger_list,
-                      struct android_log_transport_context* transp);
-static int pmsgClear(struct android_log_logger* logger,
-                     struct android_log_transport_context* transp);
-
-struct android_log_transport_read pmsgLoggerRead = {
-    .node = {&pmsgLoggerRead.node, &pmsgLoggerRead.node},
-    .name = "pmsg",
-    .available = pmsgAvailable,
-    .version = pmsgVersion,
-    .read = pmsgRead,
-    .poll = NULL,
-    .close = pmsgClose,
-    .clear = pmsgClear,
-    .setSize = NULL,
-    .getSize = NULL,
-    .getReadableSize = NULL,
-    .getPrune = NULL,
-    .setPrune = NULL,
-    .getStats = NULL,
-};
-
-static int pmsgAvailable(log_id_t logId) {
-  if (logId > LOG_ID_SECURITY) {
-    return -EINVAL;
-  }
-  if (access("/dev/pmsg0", W_OK) == 0) {
-    return 0;
-  }
-  return -EBADF;
-}
-
-/* Determine the credentials of the caller */
-static bool uid_has_log_permission(uid_t uid) {
-  return (uid == AID_SYSTEM) || (uid == AID_LOG) || (uid == AID_ROOT) || (uid == AID_LOGD);
-}
-
-static uid_t get_best_effective_uid() {
-  uid_t euid;
-  uid_t uid;
-  gid_t gid;
-  ssize_t i;
-  static uid_t last_uid = (uid_t)-1;
-
-  if (last_uid != (uid_t)-1) {
-    return last_uid;
-  }
-  uid = __android_log_uid();
-  if (uid_has_log_permission(uid)) {
-    return last_uid = uid;
-  }
-  euid = geteuid();
-  if (uid_has_log_permission(euid)) {
-    return last_uid = euid;
-  }
-  gid = getgid();
-  if (uid_has_log_permission(gid)) {
-    return last_uid = gid;
-  }
-  gid = getegid();
-  if (uid_has_log_permission(gid)) {
-    return last_uid = gid;
-  }
-  i = getgroups((size_t)0, NULL);
-  if (i > 0) {
-    gid_t list[i];
-
-    getgroups(i, list);
-    while (--i >= 0) {
-      if (uid_has_log_permission(list[i])) {
-        return last_uid = list[i];
-      }
-    }
-  }
-  return last_uid = uid;
-}
-
-static int pmsgClear(struct android_log_logger* logger __unused,
-                     struct android_log_transport_context* transp __unused) {
-  if (uid_has_log_permission(get_best_effective_uid())) {
-    return unlink("/sys/fs/pstore/pmsg-ramoops-0");
-  }
-  errno = EPERM;
-  return -1;
-}
-
-/*
- * returns the logger version
- */
-static int pmsgVersion(struct android_log_logger* logger __unused,
-                       struct android_log_transport_context* transp __unused) {
-  return 4;
-}
-
-static int pmsgRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp, struct log_msg* log_msg) {
+int PmsgRead(struct logger_list* logger_list, struct log_msg* log_msg) {
   ssize_t ret;
   off_t current, next;
-  uid_t uid;
-  struct android_log_logger* logger;
   struct __attribute__((__packed__)) {
     android_pmsg_log_header_t p;
     android_log_header_t l;
     uint8_t prio;
   } buf;
   static uint8_t preread_count;
-  bool is_system;
 
   memset(log_msg, 0, sizeof(*log_msg));
 
-  if (atomic_load(&transp->context.fd) <= 0) {
+  if (atomic_load(&logger_list->fd) <= 0) {
     int i, fd = open("/sys/fs/pstore/pmsg-ramoops-0", O_RDONLY | O_CLOEXEC);
 
     if (fd < 0) {
@@ -156,7 +53,7 @@
         return -errno;
       }
     }
-    i = atomic_exchange(&transp->context.fd, fd);
+    i = atomic_exchange(&logger_list->fd, fd);
     if ((i > 0) && (i != fd)) {
       close(i);
     }
@@ -167,7 +64,7 @@
     int fd;
 
     if (preread_count < sizeof(buf)) {
-      fd = atomic_load(&transp->context.fd);
+      fd = atomic_load(&logger_list->fd);
       if (fd <= 0) {
         return -EBADF;
       }
@@ -193,46 +90,39 @@
     }
     preread_count = 0;
 
-    if ((transp->logMask & (1 << buf.l.id)) &&
+    if ((logger_list->log_mask & (1 << buf.l.id)) &&
         ((!logger_list->start.tv_sec && !logger_list->start.tv_nsec) ||
          ((logger_list->start.tv_sec <= buf.l.realtime.tv_sec) &&
           ((logger_list->start.tv_sec != buf.l.realtime.tv_sec) ||
            (logger_list->start.tv_nsec <= buf.l.realtime.tv_nsec)))) &&
         (!logger_list->pid || (logger_list->pid == buf.p.pid))) {
-      uid = get_best_effective_uid();
-      is_system = uid_has_log_permission(uid);
-      if (is_system || (uid == buf.p.uid)) {
-        char* msg = is_system ? log_msg->entry_v4.msg : log_msg->entry_v3.msg;
-        *msg = buf.prio;
-        fd = atomic_load(&transp->context.fd);
-        if (fd <= 0) {
-          return -EBADF;
-        }
-        ret = TEMP_FAILURE_RETRY(read(fd, msg + sizeof(buf.prio), buf.p.len - sizeof(buf)));
-        if (ret < 0) {
-          return -errno;
-        }
-        if (ret != (ssize_t)(buf.p.len - sizeof(buf))) {
-          return -EIO;
-        }
-
-        log_msg->entry_v4.len = buf.p.len - sizeof(buf) + sizeof(buf.prio);
-        log_msg->entry_v4.hdr_size =
-            is_system ? sizeof(log_msg->entry_v4) : sizeof(log_msg->entry_v3);
-        log_msg->entry_v4.pid = buf.p.pid;
-        log_msg->entry_v4.tid = buf.l.tid;
-        log_msg->entry_v4.sec = buf.l.realtime.tv_sec;
-        log_msg->entry_v4.nsec = buf.l.realtime.tv_nsec;
-        log_msg->entry_v4.lid = buf.l.id;
-        if (is_system) {
-          log_msg->entry_v4.uid = buf.p.uid;
-        }
-
-        return ret + sizeof(buf.prio) + log_msg->entry_v4.hdr_size;
+      char* msg = reinterpret_cast<char*>(&log_msg->entry) + sizeof(log_msg->entry);
+      *msg = buf.prio;
+      fd = atomic_load(&logger_list->fd);
+      if (fd <= 0) {
+        return -EBADF;
       }
+      ret = TEMP_FAILURE_RETRY(read(fd, msg + sizeof(buf.prio), buf.p.len - sizeof(buf)));
+      if (ret < 0) {
+        return -errno;
+      }
+      if (ret != (ssize_t)(buf.p.len - sizeof(buf))) {
+        return -EIO;
+      }
+
+      log_msg->entry.len = buf.p.len - sizeof(buf) + sizeof(buf.prio);
+      log_msg->entry.hdr_size = sizeof(log_msg->entry);
+      log_msg->entry.pid = buf.p.pid;
+      log_msg->entry.tid = buf.l.tid;
+      log_msg->entry.sec = buf.l.realtime.tv_sec;
+      log_msg->entry.nsec = buf.l.realtime.tv_nsec;
+      log_msg->entry.lid = buf.l.id;
+      log_msg->entry.uid = buf.p.uid;
+
+      return ret + sizeof(buf.prio) + log_msg->entry.hdr_size;
     }
 
-    fd = atomic_load(&transp->context.fd);
+    fd = atomic_load(&logger_list->fd);
     if (fd <= 0) {
       return -EBADF;
     }
@@ -240,7 +130,7 @@
     if (current < 0) {
       return -errno;
     }
-    fd = atomic_load(&transp->context.fd);
+    fd = atomic_load(&logger_list->fd);
     if (fd <= 0) {
       return -EBADF;
     }
@@ -254,9 +144,8 @@
   }
 }
 
-static void pmsgClose(struct android_log_logger_list* logger_list __unused,
-                      struct android_log_transport_context* transp) {
-  int fd = atomic_exchange(&transp->context.fd, 0);
+void PmsgClose(struct logger_list* logger_list) {
+  int fd = atomic_exchange(&logger_list->fd, 0);
   if (fd > 0) {
     close(fd);
   }
@@ -273,17 +162,10 @@
 ssize_t __android_log_pmsg_file_read(log_id_t logId, char prio, const char* prefix,
                                      __android_log_pmsg_file_read_fn fn, void* arg) {
   ssize_t ret;
-  struct android_log_logger_list logger_list;
-  struct android_log_transport_context transp;
+  struct logger_list logger_list;
   struct content {
     struct listnode node;
-    union {
-      struct logger_entry_v4 entry;
-      struct logger_entry_v4 entry_v4;
-      struct logger_entry_v3 entry_v3;
-      struct logger_entry_v2 entry_v2;
-      struct logger_entry entry_v1;
-    };
+    struct logger_entry entry;
   } * content;
   struct names {
     struct listnode node;
@@ -302,15 +184,14 @@
 
   /* Add just enough clues in logger_list and transp to make API function */
   memset(&logger_list, 0, sizeof(logger_list));
-  memset(&transp, 0, sizeof(transp));
 
   logger_list.mode = ANDROID_LOG_PSTORE | ANDROID_LOG_NONBLOCK | ANDROID_LOG_RDONLY;
-  transp.logMask = (unsigned)-1;
+  logger_list.log_mask = (unsigned)-1;
   if (logId != LOG_ID_ANY) {
-    transp.logMask = (1 << logId);
+    logger_list.log_mask = (1 << logId);
   }
-  transp.logMask &= ~((1 << LOG_ID_KERNEL) | (1 << LOG_ID_EVENTS) | (1 << LOG_ID_SECURITY));
-  if (!transp.logMask) {
+  logger_list.log_mask &= ~((1 << LOG_ID_KERNEL) | (1 << LOG_ID_EVENTS) | (1 << LOG_ID_SECURITY));
+  if (!logger_list.log_mask) {
     return -EINVAL;
   }
 
@@ -335,25 +216,26 @@
   }
 
   /* Read the file content */
-  while (pmsgRead(&logger_list, &transp, &transp.logMsg) > 0) {
+  log_msg log_msg;
+  while (PmsgRead(&logger_list, &log_msg) > 0) {
     const char* cp;
-    size_t hdr_size = transp.logMsg.entry.hdr_size ? transp.logMsg.entry.hdr_size
-                                                   : sizeof(transp.logMsg.entry_v1);
-    char* msg = (char*)&transp.logMsg + hdr_size;
+    size_t hdr_size = log_msg.entry.hdr_size;
+
+    char* msg = (char*)&log_msg + hdr_size;
     const char* split = NULL;
 
-    if ((hdr_size < sizeof(transp.logMsg.entry_v1)) || (hdr_size > sizeof(transp.logMsg.entry))) {
+    if (hdr_size != sizeof(log_msg.entry)) {
       continue;
     }
     /* Check for invalid sequence number */
-    if ((transp.logMsg.entry.nsec % ANDROID_LOG_PMSG_FILE_SEQUENCE) ||
-        ((transp.logMsg.entry.nsec / ANDROID_LOG_PMSG_FILE_SEQUENCE) >=
-         ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE)) {
+    if (log_msg.entry.nsec % ANDROID_LOG_PMSG_FILE_SEQUENCE ||
+        (log_msg.entry.nsec / ANDROID_LOG_PMSG_FILE_SEQUENCE) >=
+            ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE) {
       continue;
     }
 
     /* Determine if it has <dirbase>:<filebase> format for tag */
-    len = transp.logMsg.entry.len - sizeof(prio);
+    len = log_msg.entry.len - sizeof(prio);
     for (cp = msg + sizeof(prio); *cp && isprint(*cp) && !isspace(*cp) && --len; ++cp) {
       if (*cp == ':') {
         if (split) {
@@ -399,8 +281,8 @@
     /* check if there is an existing entry */
     list_for_each(node, &name_list) {
       names = node_to_item(node, struct names, node);
-      if (!strcmp(names->name, msg + sizeof(prio)) && (names->id == transp.logMsg.entry.lid) &&
-          (names->prio == *msg)) {
+      if (!strcmp(names->name, msg + sizeof(prio)) && names->id == log_msg.entry.lid &&
+          names->prio == *msg) {
         break;
       }
     }
@@ -417,7 +299,7 @@
         break;
       }
       strcpy(names->name, msg + sizeof(prio));
-      names->id = static_cast<log_id_t>(transp.logMsg.entry.lid);
+      names->id = static_cast<log_id_t>(log_msg.entry.lid);
       names->prio = *msg;
       list_init(&names->content);
       /*
@@ -470,7 +352,7 @@
     /* Remove any file fragments that match our sequence number */
     list_for_each_safe(node, n, &names->content) {
       content = node_to_item(node, struct content, node);
-      if (transp.logMsg.entry.nsec == content->entry.nsec) {
+      if (log_msg.entry.nsec == content->entry.nsec) {
         list_remove(&content->node);
         free(content);
       }
@@ -478,22 +360,22 @@
 
     /* Add content */
     content = static_cast<struct content*>(
-        calloc(1, sizeof(content->node) + hdr_size + transp.logMsg.entry.len));
+        calloc(1, sizeof(content->node) + hdr_size + log_msg.entry.len));
     if (!content) {
       ret = -ENOMEM;
       break;
     }
-    memcpy(&content->entry, &transp.logMsg.entry, hdr_size + transp.logMsg.entry.len);
+    memcpy(&content->entry, &log_msg.entry, hdr_size + log_msg.entry.len);
 
     /* Insert in sequence number sorted order, to ease reconstruction */
     list_for_each_reverse(node, &names->content) {
-      if ((node_to_item(node, struct content, node))->entry.nsec < transp.logMsg.entry.nsec) {
+      if ((node_to_item(node, struct content, node))->entry.nsec < log_msg.entry.nsec) {
         break;
       }
     }
     list_add_head(node, &content->node);
   }
-  pmsgClose(&logger_list, &transp);
+  PmsgClose(&logger_list);
 
   /* Progress through all the collected files */
   list_for_each_safe(node, n, &name_list) {
diff --git a/liblog/pmsg_reader.h b/liblog/pmsg_reader.h
new file mode 100644
index 0000000..b784f9f
--- /dev/null
+++ b/liblog/pmsg_reader.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/cdefs.h>
+#include <unistd.h>
+
+#include "log/log_read.h"
+
+__BEGIN_DECLS
+
+int PmsgRead(struct logger_list* logger_list, struct log_msg* log_msg);
+void PmsgClose(struct logger_list* logger_list);
+
+__END_DECLS
diff --git a/liblog/pmsg_writer.cpp b/liblog/pmsg_writer.cpp
index e851100..0751e2c 100644
--- a/liblog/pmsg_writer.cpp
+++ b/liblog/pmsg_writer.cpp
@@ -14,88 +14,52 @@
  * limitations under the License.
  */
 
-/*
- * pmsg write handler
- */
+#include "pmsg_writer.h"
 
 #include <errno.h>
 #include <fcntl.h>
-#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <time.h>
 
 #include <log/log_properties.h>
-#include <private/android_filesystem_config.h>
 #include <private/android_logger.h>
 
-#include "config_write.h"
-#include "log_portability.h"
 #include "logger.h"
 #include "uio.h"
 
-static int pmsgOpen();
-static void pmsgClose();
-static int pmsgAvailable(log_id_t logId);
-static int pmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
+static atomic_int pmsg_fd;
 
-struct android_log_transport_write pmsgLoggerWrite = {
-    .node = {&pmsgLoggerWrite.node, &pmsgLoggerWrite.node},
-    .context.fd = -1,
-    .name = "pmsg",
-    .available = pmsgAvailable,
-    .open = pmsgOpen,
-    .close = pmsgClose,
-    .write = pmsgWrite,
-};
-
-static int pmsgOpen() {
-  int fd = atomic_load(&pmsgLoggerWrite.context.fd);
-  if (fd < 0) {
-    int i;
-
-    fd = TEMP_FAILURE_RETRY(open("/dev/pmsg0", O_WRONLY | O_CLOEXEC));
-    i = atomic_exchange(&pmsgLoggerWrite.context.fd, fd);
-    if ((i >= 0) && (i != fd)) {
-      close(i);
-    }
+// pmsg_fd should only beopened once.  If we see that pmsg_fd is uninitialized, we open "/dev/pmsg0"
+// then attempt to compare/exchange it into pmsg_fd.  If the compare/exchange was successful, then
+// that will be the fd used for the duration of the program, otherwise a different thread has
+// already opened and written the fd to the atomic, so close the new fd and return.
+static void GetPmsgFd() {
+  if (pmsg_fd != 0) {
+    return;
   }
 
-  return fd;
-}
+  int new_fd = TEMP_FAILURE_RETRY(open("/dev/pmsg0", O_WRONLY | O_CLOEXEC));
+  if (new_fd <= 0) {
+    return;
+  }
 
-static void pmsgClose() {
-  int fd = atomic_exchange(&pmsgLoggerWrite.context.fd, -1);
-  if (fd >= 0) {
-    close(fd);
+  int uninitialized_value = 0;
+  if (!pmsg_fd.compare_exchange_strong(uninitialized_value, new_fd)) {
+    close(new_fd);
+    return;
   }
 }
 
-static int pmsgAvailable(log_id_t logId) {
-  if (logId > LOG_ID_SECURITY) {
-    return -EINVAL;
+void PmsgClose() {
+  if (pmsg_fd > 0) {
+    close(pmsg_fd);
   }
-  if ((logId != LOG_ID_SECURITY) && (logId != LOG_ID_EVENTS) && !__android_log_is_debuggable()) {
-    return -EINVAL;
-  }
-  if (atomic_load(&pmsgLoggerWrite.context.fd) < 0) {
-    if (access("/dev/pmsg0", W_OK) == 0) {
-      return 0;
-    }
-    return -EBADF;
-  }
-  return 1;
+  pmsg_fd = 0;
 }
 
-/*
- * Extract a 4-byte value from a byte stream.
- */
-static inline uint32_t get4LE(const uint8_t* src) {
-  return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-}
-
-static int pmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
+int PmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
   static const unsigned headerLength = 2;
   struct iovec newVec[nr + headerLength];
   android_log_header_t header;
@@ -103,17 +67,25 @@
   size_t i, payloadSize;
   ssize_t ret;
 
-  if ((logId == LOG_ID_EVENTS) && !__android_log_is_debuggable()) {
-    if (vec[0].iov_len < 4) {
-      return -EINVAL;
+  if (!__android_log_is_debuggable()) {
+    if (logId != LOG_ID_EVENTS && logId != LOG_ID_SECURITY) {
+      return -1;
     }
 
-    if (SNET_EVENT_LOG_TAG != get4LE(static_cast<uint8_t*>(vec[0].iov_base))) {
-      return -EPERM;
+    if (logId == LOG_ID_EVENTS) {
+      if (vec[0].iov_len < 4) {
+        return -EINVAL;
+      }
+
+      if (SNET_EVENT_LOG_TAG != *static_cast<uint32_t*>(vec[0].iov_base)) {
+        return -EPERM;
+      }
     }
   }
 
-  if (atomic_load(&pmsgLoggerWrite.context.fd) < 0) {
+  GetPmsgFd();
+
+  if (pmsg_fd <= 0) {
     return -EBADF;
   }
 
@@ -139,7 +111,7 @@
 
   pmsgHeader.magic = LOGGER_MAGIC;
   pmsgHeader.len = sizeof(pmsgHeader) + sizeof(header);
-  pmsgHeader.uid = __android_log_uid();
+  pmsgHeader.uid = getuid();
   pmsgHeader.pid = getpid();
 
   header.id = logId;
@@ -167,7 +139,7 @@
   }
   pmsgHeader.len += payloadSize;
 
-  ret = TEMP_FAILURE_RETRY(writev(atomic_load(&pmsgLoggerWrite.context.fd), newVec, i));
+  ret = TEMP_FAILURE_RETRY(writev(pmsg_fd, newVec, i));
   if (ret < 0) {
     ret = errno ? -errno : -ENOTCONN;
   }
@@ -202,7 +174,6 @@
 /* Write a buffer as filename references (tag = <basedir>:<basename>) */
 ssize_t __android_log_pmsg_file_write(log_id_t logId, char prio, const char* filename,
                                       const char* buf, size_t len) {
-  bool weOpened;
   size_t length, packet_len;
   const char* tag;
   char *cp, *slash;
@@ -242,7 +213,6 @@
   vec[1].iov_base = (unsigned char*)tag;
   vec[1].iov_len = length;
 
-  weOpened = false;
   for (ts.tv_nsec = 0, length = len; length; ts.tv_nsec += ANDROID_LOG_PMSG_FILE_SEQUENCE) {
     ssize_t ret;
     size_t transfer;
@@ -263,37 +233,15 @@
     vec[2].iov_base = (unsigned char*)buf;
     vec[2].iov_len = transfer;
 
-    if (atomic_load(&pmsgLoggerWrite.context.fd) < 0) {
-      if (!weOpened) { /* Impossible for weOpened = true here */
-        __android_log_lock();
-      }
-      weOpened = atomic_load(&pmsgLoggerWrite.context.fd) < 0;
-      if (!weOpened) {
-        __android_log_unlock();
-      } else if (pmsgOpen() < 0) {
-        __android_log_unlock();
-        free(cp);
-        return -EBADF;
-      }
-    }
-
-    ret = pmsgWrite(logId, &ts, vec, sizeof(vec) / sizeof(vec[0]));
+    ret = PmsgWrite(logId, &ts, vec, sizeof(vec) / sizeof(vec[0]));
 
     if (ret <= 0) {
-      if (weOpened) {
-        pmsgClose();
-        __android_log_unlock();
-      }
       free(cp);
       return ret ? ret : (len - length);
     }
     length -= transfer;
     buf += transfer;
   }
-  if (weOpened) {
-    pmsgClose();
-    __android_log_unlock();
-  }
   free(cp);
   return len;
 }
diff --git a/liblog/pmsg_writer.h b/liblog/pmsg_writer.h
new file mode 100644
index 0000000..d5e1a1c
--- /dev/null
+++ b/liblog/pmsg_writer.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+#include <android/log.h>
+
+int PmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
+void PmsgClose();
diff --git a/liblog/properties.cpp b/liblog/properties.cpp
index 2e0a8c9..37670ec 100644
--- a/liblog/properties.cpp
+++ b/liblog/properties.cpp
@@ -20,13 +20,17 @@
 #include <pthread.h>
 #include <stdlib.h>
 #include <string.h>
-#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
-#include <sys/_system_properties.h>
 #include <unistd.h>
 
+#include <algorithm>
+
 #include <private/android_logger.h>
 
-#include "log_portability.h"
+#include "logger_write.h"
+
+#ifdef __ANDROID__
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
 
 static pthread_mutex_t lock_loggable = PTHREAD_MUTEX_INITIALIZER;
 
@@ -89,14 +93,19 @@
   }
 }
 
-static int __android_log_level(const char* tag, size_t len, int default_prio) {
+static int __android_log_level(const char* tag, size_t len) {
   /* sizeof() is used on this array below */
   static const char log_namespace[] = "persist.log.tag.";
   static const size_t base_offset = 8; /* skip "persist." */
-  /* calculate the size of our key temporary buffer */
-  const size_t taglen = tag ? len : 0;
+
+  if (tag == nullptr || len == 0) {
+    auto& tag_string = GetDefaultTag();
+    tag = tag_string.c_str();
+    len = tag_string.size();
+  }
+
   /* sizeof(log_namespace) = strlen(log_namespace) + 1 */
-  char key[sizeof(log_namespace) + taglen];
+  char key[sizeof(log_namespace) + len];
   char* kp;
   size_t i;
   char c = 0;
@@ -146,7 +155,7 @@
     }
   }
 
-  if (taglen) {
+  if (len) {
     int local_change_detected = change_detected;
     if (!not_locked) {
       if (!last_tag || !last_tag[0] || (last_tag[0] != tag[0]) ||
@@ -258,20 +267,30 @@
     case 'F': /* FALLTHRU */ /* Not officially supported */
     case 'A': return ANDROID_LOG_FATAL;
     case BOOLEAN_FALSE: /* FALLTHRU */ /* Not Officially supported */
-    case 'S': return -1; /* ANDROID_LOG_SUPPRESS */
+    case 'S': return ANDROID_LOG_SILENT;
       /* clang-format on */
   }
-  return default_prio;
+  return -1;
 }
 
 int __android_log_is_loggable_len(int prio, const char* tag, size_t len, int default_prio) {
-  int logLevel = __android_log_level(tag, len, default_prio);
-  return logLevel >= 0 && prio >= logLevel;
+  int minimum_log_priority = __android_log_get_minimum_priority();
+  int property_log_level = __android_log_level(tag, len);
+
+  if (property_log_level >= 0 && minimum_log_priority != ANDROID_LOG_DEFAULT) {
+    return prio >= std::min(property_log_level, minimum_log_priority);
+  } else if (property_log_level >= 0) {
+    return prio >= property_log_level;
+  } else if (minimum_log_priority != ANDROID_LOG_DEFAULT) {
+    return prio >= minimum_log_priority;
+  } else {
+    return prio >= default_prio;
+  }
 }
 
 int __android_log_is_loggable(int prio, const char* tag, int default_prio) {
-  int logLevel = __android_log_level(tag, (tag && *tag) ? strlen(tag) : 0, default_prio);
-  return logLevel >= 0 && prio >= logLevel;
+  auto len = tag ? strlen(tag) : 0;
+  return __android_log_is_loggable_len(prio, tag, len, default_prio);
 }
 
 int __android_log_is_debuggable() {
@@ -383,7 +402,7 @@
   static struct cache2_char security = {
       PTHREAD_MUTEX_INITIALIZER, 0,
       "persist.logd.security",   {{NULL, 0xFFFFFFFF}, BOOLEAN_FALSE},
-      "ro.device_owner",         {{NULL, 0xFFFFFFFF}, BOOLEAN_FALSE},
+      "ro.organization_owned",   {{NULL, 0xFFFFFFFF}, BOOLEAN_FALSE},
       evaluate_security};
 
   return do_cache2_char(&security);
@@ -627,3 +646,23 @@
 
   return property_size;
 }
+
+#else
+
+int __android_log_is_loggable(int prio, const char*, int) {
+  int minimum_priority = __android_log_get_minimum_priority();
+  if (minimum_priority == ANDROID_LOG_DEFAULT) {
+    minimum_priority = ANDROID_LOG_INFO;
+  }
+  return prio >= minimum_priority;
+}
+
+int __android_log_is_loggable_len(int prio, const char*, size_t, int def) {
+  return __android_log_is_loggable(prio, nullptr, def);
+}
+
+int __android_log_is_debuggable() {
+  return 1;
+}
+
+#endif
\ No newline at end of file
diff --git a/liblog/stderr_write.cpp b/liblog/stderr_write.cpp
deleted file mode 100644
index e324a7c..0000000
--- a/liblog/stderr_write.cpp
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * stderr write handler.  Output is logcat-like, and responds to
- * logcat's environment variables ANDROID_PRINTF_LOG and
- * ANDROID_LOG_TAGS to filter output.
- *
- * This transport only provides a writer, that means that it does not
- * provide an End-To-End capability as the logs are effectively _lost_
- * to the stderr file stream.  The purpose of this transport is to
- * supply a means for command line tools to report their logging
- * to the stderr stream, in line with all other activities.
- */
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <log/event_tag_map.h>
-#include <log/log.h>
-#include <log/logprint.h>
-
-#include "log_portability.h"
-#include "logger.h"
-#include "uio.h"
-
-static int stderrOpen();
-static void stderrClose();
-static int stderrAvailable(log_id_t logId);
-static int stderrWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
-
-struct stderrContext {
-  AndroidLogFormat* logformat;
-#if defined(__ANDROID__)
-  EventTagMap* eventTagMap;
-#endif
-};
-
-struct android_log_transport_write stderrLoggerWrite = {
-    .node = {&stderrLoggerWrite.node, &stderrLoggerWrite.node},
-    .context.priv = NULL,
-    .name = "stderr",
-    .available = stderrAvailable,
-    .open = stderrOpen,
-    .close = stderrClose,
-    .write = stderrWrite,
-};
-
-static int stderrOpen() {
-  struct stderrContext* ctx;
-  const char* envStr;
-  bool setFormat;
-
-  if (!stderr || (fileno(stderr) < 0)) {
-    return -EBADF;
-  }
-
-  if (stderrLoggerWrite.context.priv) {
-    return fileno(stderr);
-  }
-
-  ctx = static_cast<stderrContext*>(calloc(1, sizeof(stderrContext)));
-  if (!ctx) {
-    return -ENOMEM;
-  }
-
-  ctx->logformat = android_log_format_new();
-  if (!ctx->logformat) {
-    free(ctx);
-    return -ENOMEM;
-  }
-
-  envStr = getenv("ANDROID_PRINTF_LOG");
-  setFormat = false;
-
-  if (envStr) {
-    char* formats = strdup(envStr);
-    char* sv = NULL;
-    char* arg = formats;
-    while (!!(arg = strtok_r(arg, ",:; \t\n\r\f", &sv))) {
-      AndroidLogPrintFormat format = android_log_formatFromString(arg);
-      arg = NULL;
-      if (format == FORMAT_OFF) {
-        continue;
-      }
-      if (android_log_setPrintFormat(ctx->logformat, format) <= 0) {
-        continue;
-      }
-      setFormat = true;
-    }
-    free(formats);
-  }
-  if (!setFormat) {
-    AndroidLogPrintFormat format = android_log_formatFromString("threadtime");
-    android_log_setPrintFormat(ctx->logformat, format);
-  }
-  envStr = getenv("ANDROID_LOG_TAGS");
-  if (envStr) {
-    android_log_addFilterString(ctx->logformat, envStr);
-  }
-  stderrLoggerWrite.context.priv = ctx;
-
-  return fileno(stderr);
-}
-
-static void stderrClose() {
-  stderrContext* ctx = static_cast<stderrContext*>(stderrLoggerWrite.context.priv);
-
-  if (ctx) {
-    stderrLoggerWrite.context.priv = NULL;
-    if (ctx->logformat) {
-      android_log_format_free(ctx->logformat);
-      ctx->logformat = NULL;
-    }
-#if defined(__ANDROID__)
-    if (ctx->eventTagMap) {
-      android_closeEventTagMap(ctx->eventTagMap);
-      ctx->eventTagMap = NULL;
-    }
-#endif
-  }
-}
-
-static int stderrAvailable(log_id_t logId) {
-  if ((logId >= LOG_ID_MAX) || (logId == LOG_ID_KERNEL)) {
-    return -EINVAL;
-  }
-  return 1;
-}
-
-static int stderrWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
-  struct log_msg log_msg;
-  AndroidLogEntry entry;
-  char binaryMsgBuf[1024];
-  int err;
-  size_t i;
-  stderrContext* ctx = static_cast<stderrContext*>(stderrLoggerWrite.context.priv);
-
-  if (!ctx) return -EBADF;
-  if (!vec || !nr) return -EINVAL;
-
-  log_msg.entry.len = 0;
-  log_msg.entry.hdr_size = sizeof(log_msg.entry);
-  log_msg.entry.pid = getpid();
-#ifdef __BIONIC__
-  log_msg.entry.tid = gettid();
-#else
-  log_msg.entry.tid = getpid();
-#endif
-  log_msg.entry.sec = ts->tv_sec;
-  log_msg.entry.nsec = ts->tv_nsec;
-  log_msg.entry.lid = logId;
-  log_msg.entry.uid = __android_log_uid();
-
-  for (i = 0; i < nr; ++i) {
-    size_t len = vec[i].iov_len;
-    if ((log_msg.entry.len + len) > LOGGER_ENTRY_MAX_PAYLOAD) {
-      len = LOGGER_ENTRY_MAX_PAYLOAD - log_msg.entry.len;
-    }
-    if (!len) continue;
-    memcpy(log_msg.entry.msg + log_msg.entry.len, vec[i].iov_base, len);
-    log_msg.entry.len += len;
-  }
-
-  if ((logId == LOG_ID_EVENTS) || (logId == LOG_ID_SECURITY)) {
-#if defined(__ANDROID__)
-    if (!ctx->eventTagMap) {
-      ctx->eventTagMap = android_openEventTagMap(NULL);
-    }
-#endif
-    err = android_log_processBinaryLogBuffer(&log_msg.entry_v1, &entry,
-#if defined(__ANDROID__)
-                                             ctx->eventTagMap,
-#else
-                                             NULL,
-#endif
-                                             binaryMsgBuf, sizeof(binaryMsgBuf));
-  } else {
-    err = android_log_processLogBuffer(&log_msg.entry_v1, &entry);
-  }
-
-  /* print known truncated data, in essence logcat --debug */
-  if ((err < 0) && !entry.message) return -EINVAL;
-
-  if (!android_log_shouldPrintLine(ctx->logformat, entry.tag, entry.priority)) {
-    return log_msg.entry.len;
-  }
-
-  err = android_log_printLogLine(ctx->logformat, fileno(stderr), &entry);
-  if (err < 0) return errno ? -errno : -EINVAL;
-  return log_msg.entry.len;
-}
diff --git a/liblog/tests/Android.bp b/liblog/tests/Android.bp
index 50755ce..50800c5 100644
--- a/liblog/tests/Android.bp
+++ b/liblog/tests/Android.bp
@@ -54,20 +54,24 @@
     ],
     srcs: [
         "libc_test.cpp",
-        "liblog_test_default.cpp",
-        "liblog_test_stderr.cpp",
+        "liblog_default_tag.cpp",
+        "liblog_global_state.cpp",
+        "liblog_test.cpp",
         "log_id_test.cpp",
         "log_radio_test.cpp",
         "log_read_test.cpp",
         "log_system_test.cpp",
         "log_time_test.cpp",
         "log_wrap_test.cpp",
+        "logd_writer_test.cpp",
+        "logprint_test.cpp",
     ],
     shared_libs: [
         "libcutils",
         "libbase",
     ],
     static_libs: ["liblog"],
+    isolated: true,
 }
 
 // Build tests for the device (with .so). Run with:
@@ -92,6 +96,18 @@
     cflags: ["-DNO_PSTORE"],
     test_suites: [
         "cts",
-        "vts",
+        "vts10",
     ],
 }
+
+cc_test_host {
+    name: "liblog-host-test",
+    static_libs: ["liblog"],
+    shared_libs: ["libbase"],
+    srcs: [
+        "liblog_host_test.cpp",
+        "liblog_default_tag.cpp",
+        "liblog_global_state.cpp",
+    ],
+    isolated: true,
+}
diff --git a/liblog/tests/AndroidTest.xml b/liblog/tests/AndroidTest.xml
index c167478..fcb46b1 100644
--- a/liblog/tests/AndroidTest.xml
+++ b/liblog/tests/AndroidTest.xml
@@ -18,6 +18,7 @@
     <option name="config-descriptor:metadata" key="component" value="systems" />
     <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
     <option name="config-descriptor:metadata" key="parameter" value="multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
     <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
         <option name="cleanup" value="true" />
         <option name="push" value="CtsLiblogTestCases->/data/local/tmp/CtsLiblogTestCases" />
diff --git a/liblog/tests/liblog_benchmark.cpp b/liblog/tests/liblog_benchmark.cpp
index 7d11ccf..39ac7a5 100644
--- a/liblog/tests/liblog_benchmark.cpp
+++ b/liblog/tests/liblog_benchmark.cpp
@@ -17,7 +17,7 @@
 #include <fcntl.h>
 #include <inttypes.h>
 #include <poll.h>
-#include <sys/endian.h>
+#include <sched.h>
 #include <sys/socket.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
@@ -30,7 +30,6 @@
 #include <benchmark/benchmark.h>
 #include <cutils/sockets.h>
 #include <log/event_tag_map.h>
-#include <log/log_transport.h>
 #include <private/android_logger.h>
 
 BENCHMARK_MAIN();
@@ -56,8 +55,8 @@
  */
 static void BM_log_maximum_retry(benchmark::State& state) {
   while (state.KeepRunning()) {
-    LOG_FAILURE_RETRY(__android_log_print(
-        ANDROID_LOG_INFO, "BM_log_maximum_retry", "%zu", state.iterations()));
+    LOG_FAILURE_RETRY(__android_log_print(ANDROID_LOG_INFO, "BM_log_maximum_retry", "%" PRIu64,
+                                          state.iterations()));
   }
 }
 BENCHMARK(BM_log_maximum_retry);
@@ -69,27 +68,11 @@
  */
 static void BM_log_maximum(benchmark::State& state) {
   while (state.KeepRunning()) {
-    __android_log_print(ANDROID_LOG_INFO, "BM_log_maximum", "%zu",
-                        state.iterations());
+    __android_log_print(ANDROID_LOG_INFO, "BM_log_maximum", "%" PRIu64, state.iterations());
   }
 }
 BENCHMARK(BM_log_maximum);
 
-static void set_log_null() {
-  android_set_log_transport(LOGGER_NULL);
-}
-
-static void set_log_default() {
-  android_set_log_transport(LOGGER_DEFAULT);
-}
-
-static void BM_log_maximum_null(benchmark::State& state) {
-  set_log_null();
-  BM_log_maximum(state);
-  set_log_default();
-}
-BENCHMARK(BM_log_maximum_null);
-
 /*
  *	Measure the time it takes to collect the time using
  * discrete acquisition (state.PauseTiming() to state.ResumeTiming())
@@ -228,14 +211,14 @@
   buffer.header.tag = 0;
   buffer.payload.type = EVENT_TYPE_INT;
   uint32_t snapshot = 0;
-  buffer.payload.data = htole32(snapshot);
+  buffer.payload.data = snapshot;
 
   newVec[2].iov_base = &buffer;
   newVec[2].iov_len = sizeof(buffer);
 
   while (state.KeepRunning()) {
     ++snapshot;
-    buffer.payload.data = htole32(snapshot);
+    buffer.payload.data = snapshot;
     writev(pstore_fd, newVec, nr);
   }
   state.PauseTiming();
@@ -286,7 +269,7 @@
   memset(buf, 0, sizeof(buf));
   struct packet* buffer = (struct packet*)(((uintptr_t)buf + 7) & ~7);
   if (((uintptr_t)&buffer->pmsg_header) & 7) {
-    fprintf(stderr, "&buffer=0x%p iterations=%zu\n", &buffer->pmsg_header,
+    fprintf(stderr, "&buffer=0x%p iterations=%" PRIu64 "\n", &buffer->pmsg_header,
             state.iterations());
   }
 
@@ -304,11 +287,11 @@
   buffer->payload.header.tag = 0;
   buffer->payload.payload.type = EVENT_TYPE_INT;
   uint32_t snapshot = 0;
-  buffer->payload.payload.data = htole32(snapshot);
+  buffer->payload.payload.data = snapshot;
 
   while (state.KeepRunning()) {
     ++snapshot;
-    buffer->payload.payload.data = htole32(snapshot);
+    buffer->payload.payload.data = snapshot;
     write(pstore_fd, &buffer->pmsg_header,
           sizeof(android_pmsg_log_header_t) + sizeof(android_log_header_t) +
               sizeof(android_log_event_int_t));
@@ -361,7 +344,7 @@
   memset(buf, 0, sizeof(buf));
   struct packet* buffer = (struct packet*)((((uintptr_t)buf + 7) & ~7) + 1);
   if ((((uintptr_t)&buffer->pmsg_header) & 7) != 1) {
-    fprintf(stderr, "&buffer=0x%p iterations=%zu\n", &buffer->pmsg_header,
+    fprintf(stderr, "&buffer=0x%p iterations=%" PRIu64 "\n", &buffer->pmsg_header,
             state.iterations());
   }
 
@@ -379,11 +362,11 @@
   buffer->payload.header.tag = 0;
   buffer->payload.payload.type = EVENT_TYPE_INT;
   uint32_t snapshot = 0;
-  buffer->payload.payload.data = htole32(snapshot);
+  buffer->payload.payload.data = snapshot;
 
   while (state.KeepRunning()) {
     ++snapshot;
-    buffer->payload.payload.data = htole32(snapshot);
+    buffer->payload.payload.data = snapshot;
     write(pstore_fd, &buffer->pmsg_header,
           sizeof(android_pmsg_log_header_t) + sizeof(android_log_header_t) +
               sizeof(android_log_event_int_t));
@@ -436,7 +419,7 @@
   memset(buf, 0, sizeof(buf));
   struct packet* buffer = (struct packet*)(((uintptr_t)buf + 7) & ~7);
   if (((uintptr_t)&buffer->pmsg_header) & 7) {
-    fprintf(stderr, "&buffer=0x%p iterations=%zu\n", &buffer->pmsg_header,
+    fprintf(stderr, "&buffer=0x%p iterations=%" PRIu64 "\n", &buffer->pmsg_header,
             state.iterations());
   }
 
@@ -454,11 +437,11 @@
   buffer->payload.header.tag = 0;
   buffer->payload.payload.type = EVENT_TYPE_INT;
   uint32_t snapshot = 0;
-  buffer->payload.payload.data = htole32(snapshot);
+  buffer->payload.payload.data = snapshot;
 
   while (state.KeepRunning()) {
     ++snapshot;
-    buffer->payload.payload.data = htole32(snapshot);
+    buffer->payload.payload.data = snapshot;
     write(pstore_fd, &buffer->pmsg_header, LOGGER_ENTRY_MAX_PAYLOAD);
   }
   state.PauseTiming();
@@ -509,7 +492,7 @@
   memset(buf, 0, sizeof(buf));
   struct packet* buffer = (struct packet*)((((uintptr_t)buf + 7) & ~7) + 1);
   if ((((uintptr_t)&buffer->pmsg_header) & 7) != 1) {
-    fprintf(stderr, "&buffer=0x%p iterations=%zu\n", &buffer->pmsg_header,
+    fprintf(stderr, "&buffer=0x%p iterations=%" PRIu64 "\n", &buffer->pmsg_header,
             state.iterations());
   }
 
@@ -527,11 +510,11 @@
   buffer->payload.header.tag = 0;
   buffer->payload.payload.type = EVENT_TYPE_INT;
   uint32_t snapshot = 0;
-  buffer->payload.payload.data = htole32(snapshot);
+  buffer->payload.payload.data = snapshot;
 
   while (state.KeepRunning()) {
     ++snapshot;
-    buffer->payload.payload.data = htole32(snapshot);
+    buffer->payload.payload.data = snapshot;
     write(pstore_fd, &buffer->pmsg_header, LOGGER_ENTRY_MAX_PAYLOAD);
   }
   state.PauseTiming();
@@ -560,7 +543,7 @@
 /* performance test */
 static void BM_sprintf_overhead(benchmark::State& state) {
   while (state.KeepRunning()) {
-    test_print("BM_sprintf_overhead:%zu", state.iterations());
+    test_print("BM_sprintf_overhead:%" PRIu64, state.iterations());
     state.PauseTiming();
     logd_yield();
     state.ResumeTiming();
@@ -575,8 +558,7 @@
  */
 static void BM_log_print_overhead(benchmark::State& state) {
   while (state.KeepRunning()) {
-    __android_log_print(ANDROID_LOG_INFO, "BM_log_overhead", "%zu",
-                        state.iterations());
+    __android_log_print(ANDROID_LOG_INFO, "BM_log_overhead", "%" PRIu64, state.iterations());
     state.PauseTiming();
     logd_yield();
     state.ResumeTiming();
@@ -621,13 +603,6 @@
 }
 BENCHMARK(BM_log_event_overhead_42);
 
-static void BM_log_event_overhead_null(benchmark::State& state) {
-  set_log_null();
-  BM_log_event_overhead(state);
-  set_log_default();
-}
-BENCHMARK(BM_log_event_overhead_null);
-
 /*
  *	Measure the time it takes to submit the android event logging call
  * using discrete acquisition under very-light load (<1% CPU utilization).
@@ -642,15 +617,6 @@
 }
 BENCHMARK(BM_log_light_overhead);
 
-static void BM_log_light_overhead_null(benchmark::State& state) {
-  set_log_null();
-  BM_log_light_overhead(state);
-  set_log_default();
-}
-// Default gets out of hand for this test, so we set a reasonable number of
-// iterations for a timely result.
-BENCHMARK(BM_log_light_overhead_null)->Iterations(500);
-
 static void caught_latency(int /*signum*/) {
   unsigned long long v = 0xDEADBEEFA55A5AA5ULL;
 
@@ -947,7 +913,7 @@
 }
 BENCHMARK(BM_lookupEventTagNum);
 
-// Must be functionally identical to liblog internal __send_log_msg.
+// Must be functionally identical to liblog internal SendLogdControlMessage()
 static void send_to_control(char* buf, size_t len) {
   int sock =
       socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM | SOCK_CLOEXEC);
diff --git a/liblog/tests/liblog_default_tag.cpp b/liblog/tests/liblog_default_tag.cpp
new file mode 100644
index 0000000..31b7467
--- /dev/null
+++ b/liblog/tests/liblog_default_tag.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// LOG_TAG must be unset for android-base's logging to use a default tag.
+#undef LOG_TAG
+
+#include <stdlib.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/scopeguard.h>
+#include <android/log.h>
+
+#include <gtest/gtest.h>
+
+#ifndef __ANDROID__
+static const char* getprogname() {
+  return program_invocation_short_name;
+}
+#endif
+
+TEST(liblog_default_tag, no_default_tag_libbase_write_first) {
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_tag = "";
+  SetLogger([&](LogId, LogSeverity, const char* tag, const char*, unsigned int, const char*) {
+    message_seen = true;
+    EXPECT_EQ(expected_tag, tag);
+  });
+
+  expected_tag = getprogname();
+  LOG(WARNING) << "message";
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_WARN, nullptr, "message");
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_default_tag, no_default_tag_liblog_write_first) {
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_tag = "";
+  SetLogger([&](LogId, LogSeverity, const char* tag, const char*, unsigned int, const char*) {
+    message_seen = true;
+    EXPECT_EQ(expected_tag, tag);
+  });
+
+  expected_tag = getprogname();
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_WARN, nullptr, "message");
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  LOG(WARNING) << "message";
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_default_tag, libbase_sets_default_tag) {
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_tag = "libbase_test_tag";
+  SetLogger([&](LogId, LogSeverity, const char* tag, const char*, unsigned int, const char*) {
+    message_seen = true;
+    EXPECT_EQ(expected_tag, tag);
+  });
+  SetDefaultTag(expected_tag);
+
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_WARN, nullptr, "message");
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  LOG(WARNING) << "message";
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_default_tag, liblog_sets_default_tag) {
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_tag = "liblog_test_tag";
+  SetLogger([&](LogId, LogSeverity, const char* tag, const char*, unsigned int, const char*) {
+    message_seen = true;
+    EXPECT_EQ(expected_tag, tag);
+  });
+  __android_log_set_default_tag(expected_tag.c_str());
+
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_WARN, nullptr, "message");
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  LOG(WARNING) << "message";
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_default_tag, default_tag_plus_log_severity) {
+#ifdef __ANDROID__
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_tag = "liblog_test_tag";
+  SetLogger([&](LogId, LogSeverity, const char* tag, const char*, unsigned int, const char*) {
+    message_seen = true;
+    EXPECT_EQ(expected_tag, tag);
+  });
+  __android_log_set_default_tag(expected_tag.c_str());
+
+  auto log_tag_property = "log.tag." + expected_tag;
+  SetProperty(log_tag_property, "V");
+  auto reset_tag_property_guard = make_scope_guard([=] { SetProperty(log_tag_property, ""); });
+
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_VERBOSE, nullptr, "message");
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  LOG(VERBOSE) << "message";
+  EXPECT_TRUE(message_seen);
+#else
+  GTEST_SKIP() << "No log tag properties on host";
+#endif
+}
+
+TEST(liblog_default_tag, generated_default_tag_plus_log_severity) {
+#ifdef __ANDROID__
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_tag = getprogname();
+  SetLogger([&](LogId, LogSeverity, const char* tag, const char*, unsigned int, const char*) {
+    message_seen = true;
+    EXPECT_EQ(expected_tag, tag);
+  });
+
+  // Even without any calls to SetDefaultTag(), the first message that attempts to log, will
+  // generate a default tag from getprogname() and check log.tag.<default tag> for loggability. This
+  // case checks that we can log a Verbose message when log.tag.<getprogname()> is set to 'V'.
+  auto log_tag_property = "log.tag." + expected_tag;
+  SetProperty(log_tag_property, "V");
+  auto reset_tag_property_guard = make_scope_guard([=] { SetProperty(log_tag_property, ""); });
+
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_VERBOSE, nullptr, "message");
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  LOG(VERBOSE) << "message";
+  EXPECT_TRUE(message_seen);
+#else
+  GTEST_SKIP() << "No log tag properties on host";
+#endif
+}
\ No newline at end of file
diff --git a/liblog/tests/liblog_global_state.cpp b/liblog/tests/liblog_global_state.cpp
new file mode 100644
index 0000000..3508818
--- /dev/null
+++ b/liblog/tests/liblog_global_state.cpp
@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "global_state_test_tag"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/log.h>
+
+#include <gtest/gtest.h>
+
+TEST(liblog_global_state, libbase_logs_with_libbase_SetLogger) {
+  using namespace android::base;
+  bool message_seen = false;
+  LogSeverity expected_severity = WARNING;
+  std::string expected_file = Basename(__FILE__);
+  unsigned int expected_line;
+  std::string expected_message = "libbase test message";
+
+  auto LoggerFunction = [&](LogId log_id, LogSeverity severity, const char* tag, const char* file,
+                            unsigned int line, const char* message) {
+    message_seen = true;
+    EXPECT_EQ(DEFAULT, log_id);
+    EXPECT_EQ(expected_severity, severity);
+    EXPECT_STREQ(LOG_TAG, tag);
+    EXPECT_EQ(expected_file, file);
+    EXPECT_EQ(expected_line, line);
+    EXPECT_EQ(expected_message, message);
+  };
+
+  SetLogger(LoggerFunction);
+
+  expected_line = __LINE__ + 1;
+  LOG(expected_severity) << expected_message;
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_global_state, libbase_logs_with_liblog_set_logger) {
+  using namespace android::base;
+  // These must be static since they're used by the liblog logger function, which only accepts
+  // lambdas without captures.  The items used by the libbase logger are explicitly not static, to
+  // ensure that lambdas with captures do work there.
+  static bool message_seen = false;
+  static std::string expected_file = Basename(__FILE__);
+  static unsigned int expected_line;
+  static std::string expected_message = "libbase test message";
+
+  auto liblog_logger_function = [](const struct __android_log_message* log_message) {
+    message_seen = true;
+    EXPECT_EQ(sizeof(__android_log_message), log_message->struct_size);
+    EXPECT_EQ(LOG_ID_DEFAULT, log_message->buffer_id);
+    EXPECT_EQ(ANDROID_LOG_WARN, log_message->priority);
+    EXPECT_STREQ(LOG_TAG, log_message->tag);
+    EXPECT_EQ(expected_file, log_message->file);
+    EXPECT_EQ(expected_line, log_message->line);
+    EXPECT_EQ(expected_message, log_message->message);
+  };
+
+  __android_log_set_logger(liblog_logger_function);
+
+  expected_line = __LINE__ + 1;
+  LOG(WARNING) << expected_message;
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_global_state, liblog_logs_with_libbase_SetLogger) {
+  using namespace android::base;
+  bool message_seen = false;
+  std::string expected_message = "libbase test message";
+
+  auto LoggerFunction = [&](LogId log_id, LogSeverity severity, const char* tag, const char* file,
+                            unsigned int line, const char* message) {
+    message_seen = true;
+    EXPECT_EQ(MAIN, log_id);
+    EXPECT_EQ(WARNING, severity);
+    EXPECT_STREQ(LOG_TAG, tag);
+    EXPECT_EQ(nullptr, file);
+    EXPECT_EQ(0U, line);
+    EXPECT_EQ(expected_message, message);
+  };
+
+  SetLogger(LoggerFunction);
+
+  __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_WARN, LOG_TAG, expected_message.c_str());
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+}
+
+TEST(liblog_global_state, liblog_logs_with_liblog_set_logger) {
+  using namespace android::base;
+  // These must be static since they're used by the liblog logger function, which only accepts
+  // lambdas without captures.  The items used by the libbase logger are explicitly not static, to
+  // ensure that lambdas with captures do work there.
+  static bool message_seen = false;
+  static int expected_buffer_id = LOG_ID_MAIN;
+  static int expected_priority = ANDROID_LOG_WARN;
+  static std::string expected_message = "libbase test message";
+
+  auto liblog_logger_function = [](const struct __android_log_message* log_message) {
+    message_seen = true;
+    EXPECT_EQ(sizeof(__android_log_message), log_message->struct_size);
+    EXPECT_EQ(expected_buffer_id, log_message->buffer_id);
+    EXPECT_EQ(expected_priority, log_message->priority);
+    EXPECT_STREQ(LOG_TAG, log_message->tag);
+    EXPECT_STREQ(nullptr, log_message->file);
+    EXPECT_EQ(0U, log_message->line);
+    EXPECT_EQ(expected_message, log_message->message);
+  };
+
+  __android_log_set_logger(liblog_logger_function);
+
+  __android_log_buf_write(expected_buffer_id, expected_priority, LOG_TAG, expected_message.c_str());
+  EXPECT_TRUE(message_seen);
+}
+
+TEST(liblog_global_state, SetAborter_with_liblog) {
+  using namespace android::base;
+
+  std::string expected_message = "libbase test message";
+  static bool message_seen = false;
+  auto aborter_function = [&](const char* message) {
+    message_seen = true;
+    EXPECT_EQ(expected_message, message);
+  };
+
+  SetAborter(aborter_function);
+  LOG(FATAL) << expected_message;
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+
+  static std::string expected_message_static = "libbase test message";
+  auto liblog_aborter_function = [](const char* message) {
+    message_seen = true;
+    EXPECT_EQ(expected_message_static, message);
+  };
+  __android_log_set_aborter(liblog_aborter_function);
+  LOG(FATAL) << expected_message_static;
+  EXPECT_TRUE(message_seen);
+  message_seen = false;
+}
+
+TEST(liblog_global_state, is_loggable_both_default) {
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+}
+
+TEST(liblog_global_state, is_loggable_minimum_log_priority_only) {
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  EXPECT_EQ(ANDROID_LOG_DEFAULT, __android_log_set_minimum_priority(ANDROID_LOG_DEBUG));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  EXPECT_EQ(ANDROID_LOG_DEBUG, __android_log_set_minimum_priority(ANDROID_LOG_WARN));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  EXPECT_EQ(android::base::WARNING, android::base::SetMinimumLogSeverity(android::base::DEBUG));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  EXPECT_EQ(android::base::DEBUG, android::base::SetMinimumLogSeverity(android::base::WARNING));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+}
+
+TEST(liblog_global_state, is_loggable_tag_log_priority_only) {
+#ifdef __ANDROID__
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  auto log_tag_property = std::string("log.tag.") + LOG_TAG;
+  android::base::SetProperty(log_tag_property, "d");
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  android::base::SetProperty(log_tag_property, "w");
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  android::base::SetProperty(log_tag_property, "");
+#else
+  GTEST_SKIP() << "No log tag properties on host";
+#endif
+}
+
+TEST(liblog_global_state, is_loggable_both_set) {
+#ifdef __ANDROID__
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  // When both a tag and a minimum priority are set, we use the lower value of the two.
+
+  // tag = warning, minimum_priority = debug, expect 'debug'
+  auto log_tag_property = std::string("log.tag.") + LOG_TAG;
+  android::base::SetProperty(log_tag_property, "w");
+  EXPECT_EQ(ANDROID_LOG_DEFAULT, __android_log_set_minimum_priority(ANDROID_LOG_DEBUG));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  // tag = warning, minimum_priority = warning, expect 'warning'
+  EXPECT_EQ(ANDROID_LOG_DEBUG, __android_log_set_minimum_priority(ANDROID_LOG_WARN));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  // tag = debug, minimum_priority = warning, expect 'debug'
+  android::base::SetProperty(log_tag_property, "d");
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  // tag = debug, minimum_priority = debug, expect 'debug'
+  EXPECT_EQ(ANDROID_LOG_WARN, __android_log_set_minimum_priority(ANDROID_LOG_DEBUG));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_INFO, LOG_TAG, ANDROID_LOG_INFO));
+  EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
+
+  android::base::SetProperty(log_tag_property, "");
+#else
+  GTEST_SKIP() << "No log tag properties on host";
+#endif
+}
diff --git a/liblog/tests/liblog_host_test.cpp b/liblog/tests/liblog_host_test.cpp
new file mode 100644
index 0000000..ec186d4
--- /dev/null
+++ b/liblog/tests/liblog_host_test.cpp
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <log/log.h>
+#include <private/android_logger.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <regex>
+#include <string>
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <android-base/stringprintf.h>
+#include <android-base/test_utils.h>
+#include <gtest/gtest.h>
+
+using android::base::InitLogging;
+using android::base::StderrLogger;
+using android::base::StringPrintf;
+
+static std::string MakeLogPattern(int priority, const char* tag, const char* message) {
+  static const char log_characters[] = "XXVDIWEF";
+  static_assert(arraysize(log_characters) - 1 == ANDROID_LOG_SILENT,
+                "Mismatch in size of log_characters and values in android_LogPriority");
+  priority = priority > ANDROID_LOG_SILENT ? ANDROID_LOG_FATAL : priority;
+  char log_char = log_characters[priority];
+
+  return StringPrintf("%s %c \\d+-\\d+ \\d+:\\d+:\\d+ \\s*\\d+ \\s*\\d+ %s", tag, log_char,
+                      message);
+}
+
+static void CheckMessage(bool expected, const std::string& output, int priority, const char* tag,
+                         const char* message) {
+  std::regex message_regex(MakeLogPattern(priority, tag, message));
+  EXPECT_EQ(expected, std::regex_search(output, message_regex)) << message;
+}
+
+static void GenerateLogContent() {
+  __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_VERBOSE, "tag", "verbose main");
+  __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_INFO, "tag", "info main");
+  __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_ERROR, "tag", "error main");
+
+  __android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_VERBOSE, "tag", "verbose radio");
+  __android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_INFO, "tag", "info radio");
+  __android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_ERROR, "tag", "error radio");
+
+  __android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_VERBOSE, "tag", "verbose system");
+  __android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_INFO, "tag", "info system");
+  __android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_ERROR, "tag", "error system");
+
+  __android_log_buf_print(LOG_ID_CRASH, ANDROID_LOG_VERBOSE, "tag", "verbose crash");
+  __android_log_buf_print(LOG_ID_CRASH, ANDROID_LOG_INFO, "tag", "info crash");
+  __android_log_buf_print(LOG_ID_CRASH, ANDROID_LOG_ERROR, "tag", "error crash");
+}
+
+std::string GetPidString() {
+  int pid = getpid();
+  return StringPrintf("%5d", pid);
+}
+
+TEST(liblog, default_write) {
+  CapturedStderr captured_stderr;
+  InitLogging(nullptr, StderrLogger);
+
+  GenerateLogContent();
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose main");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info main");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error main");
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose radio");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info radio");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error radio");
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose system");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info system");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error system");
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose crash");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info crash");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error crash");
+}
+
+TEST(liblog, verbose_write) {
+  setenv("ANDROID_LOG_TAGS", "*:v", true);
+  CapturedStderr captured_stderr;
+  InitLogging(nullptr, StderrLogger);
+
+  GenerateLogContent();
+
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose main");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info main");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error main");
+
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose radio");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info radio");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error radio");
+
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose system");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info system");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error system");
+
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose crash");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info crash");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error crash");
+}
+
+TEST(liblog, error_write) {
+  setenv("ANDROID_LOG_TAGS", "*:e", true);
+  CapturedStderr captured_stderr;
+  InitLogging(nullptr, StderrLogger);
+
+  GenerateLogContent();
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose main");
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info main");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error main");
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose radio");
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info radio");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error radio");
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose system");
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info system");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error system");
+
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_VERBOSE, "tag", "verbose crash");
+  CheckMessage(false, captured_stderr.str(), ANDROID_LOG_INFO, "tag", "info crash");
+  CheckMessage(true, captured_stderr.str(), ANDROID_LOG_ERROR, "tag", "error crash");
+}
+
+TEST(liblog, kernel_no_write) {
+  CapturedStderr captured_stderr;
+  InitLogging(nullptr, StderrLogger);
+  __android_log_buf_print(LOG_ID_KERNEL, ANDROID_LOG_ERROR, "tag", "kernel error");
+  EXPECT_EQ("", captured_stderr.str());
+}
+
+TEST(liblog, binary_no_write) {
+  CapturedStderr captured_stderr;
+  InitLogging(nullptr, StderrLogger);
+  __android_log_buf_print(LOG_ID_EVENTS, ANDROID_LOG_ERROR, "tag", "error events");
+  __android_log_buf_print(LOG_ID_STATS, ANDROID_LOG_ERROR, "tag", "error stats");
+  __android_log_buf_print(LOG_ID_SECURITY, ANDROID_LOG_ERROR, "tag", "error security");
+
+  __android_log_bswrite(0x12, "events");
+  __android_log_stats_bwrite(0x34, "stats", strlen("stats"));
+  __android_log_security_bswrite(0x56, "security");
+
+  EXPECT_EQ("", captured_stderr.str());
+}
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
index 1f87b3e..a60d2df 100644
--- a/liblog/tests/liblog_test.cpp
+++ b/liblog/tests/liblog_test.cpp
@@ -27,10 +27,12 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <memory>
 #include <string>
 
 #include <android-base/file.h>
 #include <android-base/macros.h>
+#include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>
 #ifdef __ANDROID__  // includes sys/properties.h which does not exist outside
 #include <cutils/properties.h>
@@ -38,25 +40,13 @@
 #include <gtest/gtest.h>
 #include <log/log_event_list.h>
 #include <log/log_properties.h>
-#include <log/log_transport.h>
 #include <log/logprint.h>
 #include <private/android_filesystem_config.h>
 #include <private/android_logger.h>
 
-#ifndef TEST_PREFIX
-#ifdef TEST_LOGGER
-#define TEST_PREFIX android_set_log_transport(TEST_LOGGER);
-// make sure we always run code despite overrides if compiled for android
-#elif defined(__ANDROID__)
-#define TEST_PREFIX
-#endif
-#endif
+using android::base::make_scope_guard;
 
-#ifdef USING_LOGGER_STDERR
-#define SUPPORTS_END_TO_END 0
-#else
-#define SUPPORTS_END_TO_END 1
-#endif
+// #define ENABLE_FLAKY_TESTS
 
 // enhanced version of LOG_FAILURE_RETRY to add support for EAGAIN and
 // non-syscall libs. Since we are only using this in the emergency of
@@ -72,24 +62,93 @@
     _rc;                                                                 \
   })
 
+// std::unique_ptr doesn't let you provide a pointer to a deleter (android_logger_list_close()) if
+// the type (struct logger_list) is an incomplete type, so we create ListCloser instead.
+struct ListCloser {
+  void operator()(struct logger_list* list) { android_logger_list_close(list); }
+};
+
+// This function is meant to be used for most log tests, it does the following:
+// 1) Open the log_buffer with a blocking reader
+// 2) Write the messages via write_messages
+// 3) Set an alarm for 2 seconds as a timeout
+// 4) Read until check_message returns true, which should be used to indicate the target message
+//    is found
+// 5) Open log_buffer with a non_blocking reader and dump all messages
+// 6) Count the number of times check_messages returns true for these messages and assert it's
+//    only 1.
+template <typename FWrite, typename FCheck>
+static void RunLogTests(log_id_t log_buffer, FWrite write_messages, FCheck check_message) {
+  pid_t pid = getpid();
+
+  auto logger_list = std::unique_ptr<struct logger_list, ListCloser>{
+      android_logger_list_open(log_buffer, ANDROID_LOG_RDONLY, 1000, pid)};
+  ASSERT_TRUE(logger_list);
+
+  write_messages();
+
+  alarm(2);
+  auto alarm_guard = android::base::make_scope_guard([] { alarm(0); });
+  bool found = false;
+  while (!found) {
+    log_msg log_msg;
+    ASSERT_GT(android_logger_list_read(logger_list.get(), &log_msg), 0);
+
+    ASSERT_EQ(log_buffer, log_msg.id());
+    ASSERT_EQ(pid, log_msg.entry.pid);
+
+    // TODO: Should this be an assert?
+    if (log_msg.msg() == nullptr) {
+      continue;
+    }
+
+    check_message(log_msg, &found);
+  }
+
+  auto logger_list_non_block = std::unique_ptr<struct logger_list, ListCloser>{
+      android_logger_list_open(log_buffer, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid)};
+  ASSERT_TRUE(logger_list_non_block);
+
+  size_t count = 0;
+  while (true) {
+    log_msg log_msg;
+    auto ret = android_logger_list_read(logger_list_non_block.get(), &log_msg);
+    if (ret == -EAGAIN) {
+      break;
+    }
+    ASSERT_GT(ret, 0);
+
+    ASSERT_EQ(log_buffer, log_msg.id());
+    ASSERT_EQ(pid, log_msg.entry.pid);
+
+    // TODO: Should this be an assert?
+    if (log_msg.msg() == nullptr) {
+      continue;
+    }
+
+    found = false;
+    check_message(log_msg, &found);
+    if (found) {
+      ++count;
+    }
+  }
+
+  EXPECT_EQ(1U, count);
+}
+
 TEST(liblog, __android_log_btwrite) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
-#endif
   int intBuf = 0xDEADBEEF;
   EXPECT_LT(0,
             __android_log_btwrite(0, EVENT_TYPE_INT, &intBuf, sizeof(intBuf)));
   long long longBuf = 0xDEADBEEFA55A5AA5;
   EXPECT_LT(
       0, __android_log_btwrite(0, EVENT_TYPE_LONG, &longBuf, sizeof(longBuf)));
-  usleep(1000);
   char Buf[] = "\20\0\0\0DeAdBeEfA55a5aA5";
   EXPECT_LT(0,
             __android_log_btwrite(0, EVENT_TYPE_STRING, Buf, sizeof(Buf) - 1));
-  usleep(1000);
 }
 
-#if (defined(__ANDROID__) && defined(USING_LOGGER_DEFAULT))
+#if defined(__ANDROID__)
 static std::string popenToString(const std::string& command) {
   std::string ret;
 
@@ -160,80 +219,60 @@
 
 TEST(liblog, __android_log_btwrite__android_logger_list_read) {
 #ifdef __ANDROID__
-#ifdef TEST_PREFIX
-  TEST_PREFIX
-#endif
-  struct logger_list* logger_list;
-
-  pid_t pid = getpid();
-
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
-
   log_time ts(CLOCK_MONOTONIC);
-  EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
-#ifdef USING_LOGGER_DEFAULT
-  // Check that we can close and reopen the logger
-  bool logdwActiveAfter__android_log_btwrite;
-  if (getuid() == AID_ROOT) {
-    tested__android_log_close = true;
-#ifndef NO_PSTORE
-    bool pmsgActiveAfter__android_log_btwrite = isPmsgActive();
-    EXPECT_TRUE(pmsgActiveAfter__android_log_btwrite);
-#endif /* NO_PSTORE */
-    logdwActiveAfter__android_log_btwrite = isLogdwActive();
-    EXPECT_TRUE(logdwActiveAfter__android_log_btwrite);
-  } else if (!tested__android_log_close) {
-    fprintf(stderr, "WARNING: can not test __android_log_close()\n");
-  }
-  __android_log_close();
-  if (getuid() == AID_ROOT) {
-#ifndef NO_PSTORE
-    bool pmsgActiveAfter__android_log_close = isPmsgActive();
-    EXPECT_FALSE(pmsgActiveAfter__android_log_close);
-#endif /* NO_PSTORE */
-    bool logdwActiveAfter__android_log_close = isLogdwActive();
-    EXPECT_FALSE(logdwActiveAfter__android_log_close);
-  }
-#endif
+  log_time ts1(ts);
 
-  log_time ts1(CLOCK_MONOTONIC);
-  EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts1, sizeof(ts1)));
-#ifdef USING_LOGGER_DEFAULT
-  if (getuid() == AID_ROOT) {
+  auto write_function = [&] {
+    EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
+    // Check that we can close and reopen the logger
+    bool logdwActiveAfter__android_log_btwrite;
+    if (getuid() == AID_ROOT) {
+      tested__android_log_close = true;
 #ifndef NO_PSTORE
-    bool pmsgActiveAfter__android_log_btwrite = isPmsgActive();
-    EXPECT_TRUE(pmsgActiveAfter__android_log_btwrite);
+      bool pmsgActiveAfter__android_log_btwrite = isPmsgActive();
+      EXPECT_TRUE(pmsgActiveAfter__android_log_btwrite);
 #endif /* NO_PSTORE */
-    logdwActiveAfter__android_log_btwrite = isLogdwActive();
-    EXPECT_TRUE(logdwActiveAfter__android_log_btwrite);
-  }
-#endif
-  usleep(1000000);
+      logdwActiveAfter__android_log_btwrite = isLogdwActive();
+      EXPECT_TRUE(logdwActiveAfter__android_log_btwrite);
+    } else if (!tested__android_log_close) {
+      fprintf(stderr, "WARNING: can not test __android_log_close()\n");
+    }
+    __android_log_close();
+    if (getuid() == AID_ROOT) {
+#ifndef NO_PSTORE
+      bool pmsgActiveAfter__android_log_close = isPmsgActive();
+      EXPECT_FALSE(pmsgActiveAfter__android_log_close);
+#endif /* NO_PSTORE */
+      bool logdwActiveAfter__android_log_close = isLogdwActive();
+      EXPECT_FALSE(logdwActiveAfter__android_log_close);
+    }
+
+    ts1 = log_time(CLOCK_MONOTONIC);
+    EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts1, sizeof(ts1)));
+    if (getuid() == AID_ROOT) {
+#ifndef NO_PSTORE
+      bool pmsgActiveAfter__android_log_btwrite = isPmsgActive();
+      EXPECT_TRUE(pmsgActiveAfter__android_log_btwrite);
+#endif /* NO_PSTORE */
+      logdwActiveAfter__android_log_btwrite = isLogdwActive();
+      EXPECT_TRUE(logdwActiveAfter__android_log_btwrite);
+    }
+  };
 
   int count = 0;
   int second_count = 0;
 
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    EXPECT_EQ(log_msg.entry.pid, pid);
-
+  auto check_function = [&](log_msg log_msg, bool* found) {
     if ((log_msg.entry.len != sizeof(android_log_event_long_t)) ||
         (log_msg.id() != LOG_ID_EVENTS)) {
-      continue;
+      return;
     }
 
     android_log_event_long_t* eventData;
     eventData = reinterpret_cast<android_log_event_long_t*>(log_msg.msg());
 
     if (!eventData || (eventData->payload.type != EVENT_TYPE_LONG)) {
-      continue;
+      return;
     }
 
     log_time tx(reinterpret_cast<char*>(&eventData->payload.data));
@@ -242,171 +281,61 @@
     } else if (ts1 == tx) {
       ++second_count;
     }
-  }
 
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
-  EXPECT_EQ(SUPPORTS_END_TO_END, second_count);
+    if (count == 1 && second_count == 1) {
+      count = 0;
+      second_count = 0;
+      *found = true;
+    }
+  };
 
-  android_logger_list_close(logger_list);
+  RunLogTests(LOG_ID_EVENTS, write_function, check_function);
+
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
+TEST(liblog, __android_log_write__android_logger_list_read) {
 #ifdef __ANDROID__
-static void print_transport(const char* prefix, int logger) {
-  static const char orstr[] = " | ";
-
-  if (!prefix) {
-    prefix = "";
-  }
-  if (logger < 0) {
-    fprintf(stderr, "%s%s\n", prefix, strerror(-logger));
-    return;
-  }
-
-  if (logger == LOGGER_DEFAULT) {
-    fprintf(stderr, "%sLOGGER_DEFAULT", prefix);
-    prefix = orstr;
-  }
-  if (logger & LOGGER_LOGD) {
-    fprintf(stderr, "%sLOGGER_LOGD", prefix);
-    prefix = orstr;
-  }
-  if (logger & LOGGER_KERNEL) {
-    fprintf(stderr, "%sLOGGER_KERNEL", prefix);
-    prefix = orstr;
-  }
-  if (logger & LOGGER_NULL) {
-    fprintf(stderr, "%sLOGGER_NULL", prefix);
-    prefix = orstr;
-  }
-  if (logger & LOGGER_STDERR) {
-    fprintf(stderr, "%sLOGGER_STDERR", prefix);
-    prefix = orstr;
-  }
-  logger &= ~(LOGGER_LOGD | LOGGER_KERNEL | LOGGER_NULL | LOGGER_STDERR);
-  if (logger) {
-    fprintf(stderr, "%s0x%x", prefix, logger);
-    prefix = orstr;
-  }
-  if (prefix == orstr) {
-    fprintf(stderr, "\n");
-  }
-}
-#endif
-
-// This test makes little sense standalone, and requires the tests ahead
-// and behind us, to make us whole.  We could incorporate a prefix and
-// suffix test to make this standalone, but opted to not complicate this.
-TEST(liblog, android_set_log_transport) {
-#ifdef __ANDROID__
-#ifdef TEST_PREFIX
-  TEST_PREFIX
-#endif
-
-  int logger = android_get_log_transport();
-  print_transport("android_get_log_transport = ", logger);
-  EXPECT_NE(LOGGER_NULL, logger);
-
-  int ret;
-  EXPECT_EQ(LOGGER_NULL, ret = android_set_log_transport(LOGGER_NULL));
-  print_transport("android_set_log_transport = ", ret);
-  EXPECT_EQ(LOGGER_NULL, ret = android_get_log_transport());
-  print_transport("android_get_log_transport = ", ret);
-
   pid_t pid = getpid();
 
-  struct logger_list* logger_list;
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
+  struct timespec ts;
+  clock_gettime(CLOCK_MONOTONIC, &ts);
+  std::string buf = android::base::StringPrintf("pid=%u ts=%ld.%09ld", pid, ts.tv_sec, ts.tv_nsec);
+  static const char tag[] = "liblog.__android_log_write__android_logger_list_read";
+  static const char prio = ANDROID_LOG_DEBUG;
 
-  log_time ts(CLOCK_MONOTONIC);
-  EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
+  std::string expected_message =
+      std::string(&prio, sizeof(prio)) + tag + std::string("", 1) + buf + std::string("", 1);
 
-  usleep(1000000);
+  auto write_function = [&] { ASSERT_LT(0, __android_log_write(prio, tag, buf.c_str())); };
 
-  int count = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    if (log_msg.entry.len != expected_message.length()) {
+      return;
     }
 
-    EXPECT_EQ(log_msg.entry.pid, pid);
-
-    if ((log_msg.entry.len != sizeof(android_log_event_long_t)) ||
-        (log_msg.id() != LOG_ID_EVENTS)) {
-      continue;
+    if (expected_message != std::string(log_msg.msg(), log_msg.entry.len)) {
+      return;
     }
 
-    android_log_event_long_t* eventData;
-    eventData = reinterpret_cast<android_log_event_long_t*>(log_msg.msg());
+    *found = true;
+  };
 
-    if (!eventData || (eventData->payload.type != EVENT_TYPE_LONG)) {
-      continue;
-    }
+  RunLogTests(LOG_ID_MAIN, write_function, check_function);
 
-    log_time tx(reinterpret_cast<char*>(&eventData->payload.data));
-    if (ts == tx) {
-      ++count;
-    }
-  }
-
-  android_logger_list_close(logger_list);
-
-  EXPECT_EQ(logger, ret = android_set_log_transport(logger));
-  print_transport("android_set_log_transport = ", ret);
-  EXPECT_EQ(logger, ret = android_get_log_transport());
-  print_transport("android_get_log_transport = ", ret);
-
-  // False negative if liblog.__android_log_btwrite__android_logger_list_read
-  // fails above, so we will likely succeed. But we will have so many
-  // failures elsewhere that it is probably not worthwhile for us to
-  // highlight yet another disappointment.
-  //
-  // We also expect failures in the following tests if the set does not
-  // react in an appropriate manner internally, yet passes, so we depend
-  // on this test being in the middle of a series of tests performed in
-  // the same process.
-  EXPECT_EQ(0, count);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
-#ifdef TEST_PREFIX
-static inline uint32_t get4LE(const uint8_t* src) {
-  return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
-}
-
-static inline uint32_t get4LE(const char* src) {
-  return get4LE(reinterpret_cast<const uint8_t*>(src));
-}
-#endif
-
 static void bswrite_test(const char* message) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
-  struct logger_list* logger_list;
-
+#ifdef __ANDROID__
   pid_t pid = getpid();
 
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
-
-#ifdef __ANDROID__
   log_time ts(android_log_clockid());
-#else
-  log_time ts(CLOCK_REALTIME);
-#endif
 
-  EXPECT_LT(0, __android_log_bswrite(0, message));
   size_t num_lines = 1, size = 0, length = 0, total = 0;
   const char* cp = message;
   while (*cp) {
@@ -428,36 +357,25 @@
     ++cp;
     ++total;
   }
-  usleep(1000000);
 
-  int count = 0;
+  auto write_function = [&] { EXPECT_LT(0, __android_log_bswrite(0, message)); };
 
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    EXPECT_EQ(log_msg.entry.pid, pid);
-
-    if ((log_msg.entry.sec < (ts.tv_sec - 1)) ||
-        ((ts.tv_sec + 1) < log_msg.entry.sec) ||
-        ((size_t)log_msg.entry.len !=
-         (sizeof(android_log_event_string_t) + length)) ||
-        (log_msg.id() != LOG_ID_EVENTS)) {
-      continue;
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    if ((size_t)log_msg.entry.len != (sizeof(android_log_event_string_t) + length) ||
+        log_msg.id() != LOG_ID_EVENTS) {
+      return;
     }
 
     android_log_event_string_t* eventData;
     eventData = reinterpret_cast<android_log_event_string_t*>(log_msg.msg());
 
     if (!eventData || (eventData->type != EVENT_TYPE_STRING)) {
-      continue;
+      return;
     }
 
-    size_t len = get4LE(reinterpret_cast<char*>(&eventData->length));
+    size_t len = eventData->length;
     if (len == total) {
-      ++count;
+      *found = true;
 
       AndroidLogFormat* logformat = android_log_format_new();
       EXPECT_TRUE(NULL != logformat);
@@ -467,7 +385,7 @@
         fprintf(stderr, "Expect \"Binary log entry conversion failed\"\n");
       }
       int processBinaryLogBuffer = android_log_processBinaryLogBuffer(
-          &log_msg.entry_v1, &entry, NULL, msgBuf, sizeof(msgBuf));
+          &log_msg.entry, &entry, nullptr, msgBuf, sizeof(msgBuf));
       EXPECT_EQ((length == total) ? 0 : -1, processBinaryLogBuffer);
       if ((processBinaryLogBuffer == 0) || entry.message) {
         size_t line_overhead = 20;
@@ -484,11 +402,10 @@
       }
       android_log_format_free(logformat);
     }
-  }
+  };
 
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+  RunLogTests(LOG_ID_EVENTS, write_function, check_function);
 
-  android_logger_list_close(logger_list);
 #else
   message = NULL;
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -516,26 +433,15 @@
 }
 
 static void buf_write_test(const char* message) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
-  struct logger_list* logger_list;
-
+#ifdef __ANDROID__
   pid_t pid = getpid();
 
-  ASSERT_TRUE(
-      NULL !=
-      (logger_list = android_logger_list_open(
-           LOG_ID_MAIN, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid)));
-
   static const char tag[] = "TEST__android_log_buf_write";
-#ifdef __ANDROID__
   log_time ts(android_log_clockid());
-#else
-  log_time ts(CLOCK_REALTIME);
-#endif
 
-  EXPECT_LT(
-      0, __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_INFO, tag, message));
+  auto write_function = [&] {
+    EXPECT_LT(0, __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_INFO, tag, message));
+  };
   size_t num_lines = 1, size = 0, length = 0;
   const char* cp = message;
   while (*cp) {
@@ -552,32 +458,18 @@
     }
     ++cp;
   }
-  usleep(1000000);
 
-  int count = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    if ((size_t)log_msg.entry.len != (sizeof(tag) + length + 2) || log_msg.id() != LOG_ID_MAIN) {
+      return;
     }
 
-    ASSERT_EQ(log_msg.entry.pid, pid);
-
-    if ((log_msg.entry.sec < (ts.tv_sec - 1)) ||
-        ((ts.tv_sec + 1) < log_msg.entry.sec) ||
-        ((size_t)log_msg.entry.len != (sizeof(tag) + length + 2)) ||
-        (log_msg.id() != LOG_ID_MAIN)) {
-      continue;
-    }
-
-    ++count;
+    *found = true;
 
     AndroidLogFormat* logformat = android_log_format_new();
     EXPECT_TRUE(NULL != logformat);
     AndroidLogEntry entry;
-    int processLogBuffer =
-        android_log_processLogBuffer(&log_msg.entry_v1, &entry);
+    int processLogBuffer = android_log_processLogBuffer(&log_msg.entry, &entry);
     EXPECT_EQ(0, processLogBuffer);
     if (processLogBuffer == 0) {
       size_t line_overhead = 11;
@@ -588,11 +480,10 @@
                 android_log_printLogLine(logformat, fileno(stderr), &entry));
     }
     android_log_format_free(logformat);
-  }
+  };
 
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+  RunLogTests(LOG_ID_MAIN, write_function, check_function);
 
-  android_logger_list_close(logger_list);
 #else
   message = NULL;
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -611,8 +502,8 @@
   buf_write_test("\n Hello World \n");
 }
 
-#ifdef USING_LOGGER_DEFAULT  // requires blocking reader functionality
-#ifdef TEST_PREFIX
+#ifdef ENABLE_FLAKY_TESTS
+#ifdef __ANDROID__
 static unsigned signaled;
 static log_time signal_time;
 
@@ -673,8 +564,7 @@
 #endif
 
 TEST(liblog, android_logger_list_read__cpu_signal) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
+#ifdef __ANDROID__
   struct logger_list* logger_list;
   unsigned long long v = 0xDEADBEEFA55A0000ULL;
 
@@ -766,7 +656,7 @@
 #endif
 }
 
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
 /*
  *  Strictly, we are not allowed to log messages in a signal context, the
  * correct way to handle this is to ensure the messages are constructed in
@@ -830,8 +720,7 @@
 #endif
 
 TEST(liblog, android_logger_list_read__cpu_thread) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
+#ifdef __ANDROID__
   struct logger_list* logger_list;
   unsigned long long v = 0xDEADBEAFA55A0000ULL;
 
@@ -923,13 +812,8 @@
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
-#endif  // USING_LOGGER_DEFAULT
+#endif  // ENABLE_FLAKY_TESTS
 
-#ifdef TEST_PREFIX
-static const char max_payload_tag[] = "TEST_max_payload_and_longish_tag_XXXX";
-#define SIZEOF_MAX_PAYLOAD_BUF \
-  (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(max_payload_tag) - 1)
-#endif
 static const char max_payload_buf[] =
     "LEONATO\n\
 I learn in this letter that Don Peter of Arragon\n\
@@ -1063,39 +947,26 @@
 takes his leave.";
 
 TEST(liblog, max_payload) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
+#ifdef __ANDROID__
+  static const char max_payload_tag[] = "TEST_max_payload_and_longish_tag_XXXX";
+#define SIZEOF_MAX_PAYLOAD_BUF (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(max_payload_tag) - 1)
+
   pid_t pid = getpid();
   char tag[sizeof(max_payload_tag)];
   memcpy(tag, max_payload_tag, sizeof(tag));
   snprintf(tag + sizeof(tag) - 5, 5, "%04X", pid & 0xFFFF);
 
-  LOG_FAILURE_RETRY(__android_log_buf_write(LOG_ID_SYSTEM, ANDROID_LOG_INFO,
-                                            tag, max_payload_buf));
-  sleep(2);
+  auto write_function = [&] {
+    LOG_FAILURE_RETRY(
+        __android_log_buf_write(LOG_ID_SYSTEM, ANDROID_LOG_INFO, tag, max_payload_buf));
+  };
 
-  struct logger_list* logger_list;
-
-  ASSERT_TRUE(NULL != (logger_list = android_logger_list_open(
-                           LOG_ID_SYSTEM, ANDROID_LOG_RDONLY, 100, 0)));
-
-  bool matches = false;
   ssize_t max_len = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    if ((log_msg.entry.pid != pid) || (log_msg.id() != LOG_ID_SYSTEM)) {
-      continue;
-    }
-
+  auto check_function = [&](log_msg log_msg, bool* found) {
     char* data = log_msg.msg();
 
     if (!data || strcmp(++data, tag)) {
-      continue;
+      return;
     }
 
     data += strlen(data) + 1;
@@ -1112,71 +983,36 @@
     }
 
     if (max_len > 512) {
-      matches = true;
-      break;
+      *found = true;
     }
-  }
+  };
 
-  android_logger_list_close(logger_list);
-
-#if SUPPORTS_END_TO_END
-  EXPECT_EQ(true, matches);
+  RunLogTests(LOG_ID_SYSTEM, write_function, check_function);
 
   EXPECT_LE(SIZEOF_MAX_PAYLOAD_BUF, static_cast<size_t>(max_len));
 #else
-  EXPECT_EQ(false, matches);
-#endif
-#else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
 TEST(liblog, __android_log_buf_print__maxtag) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
-  struct logger_list* logger_list;
-
-  pid_t pid = getpid();
-
-  ASSERT_TRUE(
-      NULL !=
-      (logger_list = android_logger_list_open(
-           LOG_ID_MAIN, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid)));
-
 #ifdef __ANDROID__
-  log_time ts(android_log_clockid());
-#else
-  log_time ts(CLOCK_REALTIME);
-#endif
+  auto write_function = [&] {
+    EXPECT_LT(0, __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_INFO, max_payload_buf,
+                                         max_payload_buf));
+  };
 
-  EXPECT_LT(0, __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_INFO,
-                                       max_payload_buf, max_payload_buf));
-  usleep(1000000);
-
-  int count = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    if ((size_t)log_msg.entry.len < LOGGER_ENTRY_MAX_PAYLOAD) {
+      return;
     }
 
-    ASSERT_EQ(log_msg.entry.pid, pid);
-
-    if ((log_msg.entry.sec < (ts.tv_sec - 1)) ||
-        ((ts.tv_sec + 1) < log_msg.entry.sec) ||
-        ((size_t)log_msg.entry.len < LOGGER_ENTRY_MAX_PAYLOAD) ||
-        (log_msg.id() != LOG_ID_MAIN)) {
-      continue;
-    }
-
-    ++count;
+    *found = true;
 
     AndroidLogFormat* logformat = android_log_format_new();
     EXPECT_TRUE(NULL != logformat);
     AndroidLogEntry entry;
-    int processLogBuffer =
-        android_log_processLogBuffer(&log_msg.entry_v1, &entry);
+    int processLogBuffer = android_log_processLogBuffer(&log_msg.entry, &entry);
     EXPECT_EQ(0, processLogBuffer);
     if (processLogBuffer == 0) {
       fflush(stderr);
@@ -1188,19 +1024,20 @@
       EXPECT_GT(LOGGER_ENTRY_MAX_PAYLOAD * 13 / 8, printLogLine);
     }
     android_log_format_free(logformat);
-  }
+  };
 
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+  RunLogTests(LOG_ID_MAIN, write_function, check_function);
 
-  android_logger_list_close(logger_list);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
+// TODO: This test is tautological. android_logger_list_read() calls recv() with
+// LOGGER_ENTRY_MAX_PAYLOAD as its size argument, so it's not possible for this test to read a
+// payload larger than that size.
 TEST(liblog, too_big_payload) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
+#ifdef __ANDROID__
   pid_t pid = getpid();
   static const char big_payload_tag[] = "TEST_big_payload_XXXX";
   char tag[sizeof(big_payload_tag)];
@@ -1208,32 +1045,18 @@
   snprintf(tag + sizeof(tag) - 5, 5, "%04X", pid & 0xFFFF);
 
   std::string longString(3266519, 'x');
+  ssize_t ret;
 
-  ssize_t ret = LOG_FAILURE_RETRY(__android_log_buf_write(
-      LOG_ID_SYSTEM, ANDROID_LOG_INFO, tag, longString.c_str()));
+  auto write_function = [&] {
+    ret = LOG_FAILURE_RETRY(
+        __android_log_buf_write(LOG_ID_SYSTEM, ANDROID_LOG_INFO, tag, longString.c_str()));
+  };
 
-  struct logger_list* logger_list;
-
-  ASSERT_TRUE(NULL != (logger_list = android_logger_list_open(
-                           LOG_ID_SYSTEM,
-                           ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 100, 0)));
-
-  ssize_t max_len = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    if ((log_msg.entry.pid != pid) || (log_msg.id() != LOG_ID_SYSTEM)) {
-      continue;
-    }
-
+  auto check_function = [&](log_msg log_msg, bool* found) {
     char* data = log_msg.msg();
 
     if (!data || strcmp(++data, tag)) {
-      continue;
+      return;
     }
 
     data += strlen(data) + 1;
@@ -1245,37 +1068,37 @@
       ++right;
     }
 
-    if (max_len <= (left - data)) {
-      max_len = left - data + 1;
+    ssize_t len = left - data + 1;
+    // Check that we don't see any entries larger than the max payload.
+    EXPECT_LE(static_cast<size_t>(len), LOGGER_ENTRY_MAX_PAYLOAD - sizeof(big_payload_tag));
+
+    // Once we've found our expected entry, break.
+    if (len == LOGGER_ENTRY_MAX_PAYLOAD - sizeof(big_payload_tag)) {
+      *found = true;
     }
-  }
+  };
 
-  android_logger_list_close(logger_list);
+  RunLogTests(LOG_ID_SYSTEM, write_function, check_function);
 
-#if !SUPPORTS_END_TO_END
-  max_len =
-      max_len ? max_len : LOGGER_ENTRY_MAX_PAYLOAD - sizeof(big_payload_tag);
-#endif
-  EXPECT_LE(LOGGER_ENTRY_MAX_PAYLOAD - sizeof(big_payload_tag),
-            static_cast<size_t>(max_len));
-
-  // SLOP: Allow the underlying interface to optionally place a
-  // terminating nul at the LOGGER_ENTRY_MAX_PAYLOAD's last byte
-  // or not.
-  if (ret == (max_len + static_cast<ssize_t>(sizeof(big_payload_tag)) - 1)) {
-    --max_len;
-  }
-  EXPECT_EQ(ret, max_len + static_cast<ssize_t>(sizeof(big_payload_tag)));
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
 TEST(liblog, dual_reader) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
+#ifdef __ANDROID__
+  static const int expected_count1 = 25;
+  static const int expected_count2 = 25;
 
-  static const int num = 25;
+  pid_t pid = getpid();
+
+  auto logger_list1 = std::unique_ptr<struct logger_list, ListCloser>{
+      android_logger_list_open(LOG_ID_MAIN, ANDROID_LOG_RDONLY, expected_count1, pid)};
+  ASSERT_TRUE(logger_list1);
+
+  auto logger_list2 = std::unique_ptr<struct logger_list, ListCloser>{
+      android_logger_list_open(LOG_ID_MAIN, ANDROID_LOG_RDONLY, expected_count2, pid)};
+  ASSERT_TRUE(logger_list2);
 
   for (int i = 25; i > 0; --i) {
     static const char fmt[] = "dual_reader %02d";
@@ -1284,32 +1107,46 @@
     LOG_FAILURE_RETRY(__android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_INFO,
                                               "liblog", buffer));
   }
-  usleep(1000000);
 
-  struct logger_list* logger_list1;
-  ASSERT_TRUE(NULL != (logger_list1 = android_logger_list_open(
-                           LOG_ID_MAIN,
-                           ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, num, 0)));
+  alarm(2);
+  auto alarm_guard = android::base::make_scope_guard([] { alarm(0); });
 
-  struct logger_list* logger_list2;
+  // Wait until we see all messages with the blocking reader.
+  int count1 = 0;
+  int count2 = 0;
 
-  if (NULL == (logger_list2 = android_logger_list_open(
-                   LOG_ID_MAIN, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   num - 10, 0))) {
-    android_logger_list_close(logger_list1);
-    ASSERT_TRUE(NULL != logger_list2);
+  while (count1 != expected_count2 || count2 != expected_count2) {
+    log_msg log_msg;
+    if (count1 < expected_count1) {
+      ASSERT_GT(android_logger_list_read(logger_list1.get(), &log_msg), 0);
+      count1++;
+    }
+    if (count2 < expected_count2) {
+      ASSERT_GT(android_logger_list_read(logger_list2.get(), &log_msg), 0);
+      count2++;
+    }
   }
 
-  int count1 = 0;
+  // Test again with the nonblocking reader.
+  auto logger_list_non_block1 =
+      std::unique_ptr<struct logger_list, ListCloser>{android_logger_list_open(
+          LOG_ID_MAIN, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, expected_count1, pid)};
+  ASSERT_TRUE(logger_list_non_block1);
+
+  auto logger_list_non_block2 =
+      std::unique_ptr<struct logger_list, ListCloser>{android_logger_list_open(
+          LOG_ID_MAIN, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, expected_count2, pid)};
+  ASSERT_TRUE(logger_list_non_block2);
+  count1 = 0;
+  count2 = 0;
   bool done1 = false;
-  int count2 = 0;
   bool done2 = false;
 
-  do {
+  while (!done1 || !done2) {
     log_msg log_msg;
 
     if (!done1) {
-      if (android_logger_list_read(logger_list1, &log_msg) <= 0) {
+      if (android_logger_list_read(logger_list_non_block1.get(), &log_msg) <= 0) {
         done1 = true;
       } else {
         ++count1;
@@ -1317,25 +1154,21 @@
     }
 
     if (!done2) {
-      if (android_logger_list_read(logger_list2, &log_msg) <= 0) {
+      if (android_logger_list_read(logger_list_non_block2.get(), &log_msg) <= 0) {
         done2 = true;
       } else {
         ++count2;
       }
     }
-  } while ((!done1) || (!done2));
+  }
 
-  android_logger_list_close(logger_list1);
-  android_logger_list_close(logger_list2);
-
-  EXPECT_EQ(num * SUPPORTS_END_TO_END, count1);
-  EXPECT_EQ((num - 10) * SUPPORTS_END_TO_END, count2);
+  EXPECT_EQ(expected_count1, count1);
+  EXPECT_EQ(expected_count2, count2);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
-#ifdef USING_LOGGER_DEFAULT  // Do not retest logprint
 static bool checkPriForTag(AndroidLogFormat* p_format, const char* tag,
                            android_LogPriority pri) {
   return android_log_shouldPrintLine(p_format, tag, pri) &&
@@ -1411,9 +1244,8 @@
 
   android_log_format_free(p_format);
 }
-#endif  // USING_LOGGER_DEFAULT
 
-#ifdef USING_LOGGER_DEFAULT  // Do not retest property handling
+#ifdef ENABLE_FLAKY_TESTS
 TEST(liblog, is_loggable) {
 #ifdef __ANDROID__
   static const char tag[] = "is_loggable";
@@ -1426,14 +1258,10 @@
     int level;
     char type;
   } levels[] = {
-    { ANDROID_LOG_VERBOSE, 'v' },
-    { ANDROID_LOG_DEBUG, 'd' },
-    { ANDROID_LOG_INFO, 'i' },
-    { ANDROID_LOG_WARN, 'w' },
-    { ANDROID_LOG_ERROR, 'e' },
-    { ANDROID_LOG_FATAL, 'a' },
-    { -1, 's' },
-    { -2, 'g' },  // Illegal value, resort to default
+      {ANDROID_LOG_VERBOSE, 'v'}, {ANDROID_LOG_DEBUG, 'd'},
+      {ANDROID_LOG_INFO, 'i'},    {ANDROID_LOG_WARN, 'w'},
+      {ANDROID_LOG_ERROR, 'e'},   {ANDROID_LOG_FATAL, 'a'},
+      {ANDROID_LOG_SILENT, 's'},  {-2, 'g'},  // Illegal value, resort to default
   };
 
   // Set up initial test condition
@@ -1701,14 +1529,13 @@
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
-#endif  // USING_LOGGER_DEFAULT
+#endif  // ENABLE_FLAKY_TESTS
 
+#ifdef ENABLE_FLAKY_TESTS
 // Following tests the specific issues surrounding error handling wrt logd.
 // Kills logd and toss all collected data, equivalent to logcat -b all -c,
 // except we also return errors to the logging callers.
-#ifdef USING_LOGGER_DEFAULT
 #ifdef __ANDROID__
-#ifdef TEST_PREFIX
 // helper to liblog.enoent to count end-to-end matching logging messages.
 static int count_matching_ts(log_time ts) {
   usleep(1000000);
@@ -1744,21 +1571,18 @@
   return count;
 }
 
-// meant to be handed to ASSERT_TRUE / EXPECT_TRUE only to expand the message
-static testing::AssertionResult IsOk(bool ok, std::string& message) {
-  return ok ? testing::AssertionSuccess()
-            : (testing::AssertionFailure() << message);
-}
-#endif  // TEST_PREFIX
-
 TEST(liblog, enoent) {
-#ifdef TEST_PREFIX
-  TEST_PREFIX
+#ifdef __ANDROID__
+  if (getuid() != 0) {
+    GTEST_SKIP() << "Skipping test, must be run as root.";
+    return;
+  }
+
   log_time ts(CLOCK_MONOTONIC);
   EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
-  EXPECT_EQ(SUPPORTS_END_TO_END, count_matching_ts(ts));
+  EXPECT_EQ(1, count_matching_ts(ts));
 
-  // This call will fail if we are setuid(AID_SYSTEM), beware of any
+  // This call will fail unless we are root, beware of any
   // test prior to this one playing with setuid and causing interference.
   // We need to run before these tests so that they do not interfere with
   // this test.
@@ -1770,20 +1594,7 @@
   // liblog.android_logger_get_ is one of those tests that has no recourse
   // and that would be adversely affected by emptying the log if it was run
   // right after this test.
-  if (getuid() != AID_ROOT) {
-    fprintf(
-        stderr,
-        "WARNING: test conditions request being run as root and not AID=%d\n",
-        getuid());
-    if (!__android_log_is_debuggable()) {
-      fprintf(
-          stderr,
-          "WARNING: can not run test on a \"user\" build, bypassing test\n");
-      return;
-    }
-  }
-
-  system((getuid() == AID_ROOT) ? "stop logd" : "su 0 stop logd");
+  system("stop logd");
   usleep(1000000);
 
   // A clean stop like we are testing returns -ENOENT, but in the _real_
@@ -1795,42 +1606,38 @@
   std::string content = android::base::StringPrintf(
       "__android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)) = %d %s\n",
       ret, (ret <= 0) ? strerror(-ret) : "(content sent)");
-  EXPECT_TRUE(
-      IsOk((ret == -ENOENT) || (ret == -ENOTCONN) || (ret == -ECONNREFUSED),
-           content));
+  EXPECT_TRUE(ret == -ENOENT || ret == -ENOTCONN || ret == -ECONNREFUSED) << content;
   ret = __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts));
   content = android::base::StringPrintf(
       "__android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)) = %d %s\n",
       ret, (ret <= 0) ? strerror(-ret) : "(content sent)");
-  EXPECT_TRUE(
-      IsOk((ret == -ENOENT) || (ret == -ENOTCONN) || (ret == -ECONNREFUSED),
-           content));
+  EXPECT_TRUE(ret == -ENOENT || ret == -ENOTCONN || ret == -ECONNREFUSED) << content;
   EXPECT_EQ(0, count_matching_ts(ts));
 
-  system((getuid() == AID_ROOT) ? "start logd" : "su 0 start logd");
+  system("start logd");
   usleep(1000000);
 
   EXPECT_EQ(0, count_matching_ts(ts));
 
   ts = log_time(CLOCK_MONOTONIC);
   EXPECT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
-  EXPECT_EQ(SUPPORTS_END_TO_END, count_matching_ts(ts));
+  EXPECT_EQ(1, count_matching_ts(ts));
 
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 #endif  // __ANDROID__
-#endif  // USING_LOGGER_DEFAULT
+#endif  // ENABLE_FLAKY_TESTS
 
 // Below this point we run risks of setuid(AID_SYSTEM) which may affect others.
 
+#ifdef ENABLE_FLAKY_TESTS
 // Do not retest properties, and cannot log into LOG_ID_SECURITY
-#ifdef USING_LOGGER_DEFAULT
 TEST(liblog, __security) {
 #ifdef __ANDROID__
   static const char persist_key[] = "persist.logd.security";
-  static const char readonly_key[] = "ro.device_owner";
+  static const char readonly_key[] = "ro.organization_owned";
   // A silly default value that can never be in readonly_key so
   // that it can be determined the property is not set.
   static const char nothing_val[] = "_NOTHING_TO_SEE_HERE_";
@@ -1850,7 +1657,7 @@
   if (!strcmp(readonly, nothing_val)) {
     // Lets check if we can set the value (we should not be allowed to do so)
     EXPECT_FALSE(__android_log_security());
-    fprintf(stderr, "WARNING: setting ro.device_owner to a domain\n");
+    fprintf(stderr, "WARNING: setting ro.organization_owned to a domain\n");
     static const char domain[] = "com.google.android.SecOps.DeviceOwner";
     EXPECT_NE(0, property_set(readonly_key, domain));
     useconds_t total_time = 0;
@@ -2083,113 +1890,74 @@
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
-#endif  // USING_LOGGER_DEFAULT
+#endif  // ENABLE_FLAKY_TESTS
 
-#ifdef TEST_PREFIX
-static void android_errorWriteWithInfoLog_helper(int TAG, const char* SUBTAG,
-                                                 int UID, const char* payload,
-                                                 int DATA_LEN, int& count) {
-  TEST_PREFIX
-  struct logger_list* logger_list;
+#ifdef __ANDROID__
+static void android_errorWriteWithInfoLog_helper(int tag, const char* subtag, int uid,
+                                                 const char* payload, int data_len) {
+  auto write_function = [&] {
+    int ret = android_errorWriteWithInfoLog(tag, subtag, uid, payload, data_len);
+    ASSERT_LT(0, ret);
+  };
 
-  pid_t pid = getpid();
-
-  count = 0;
-
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
-
-  int retval_android_errorWriteWithinInfoLog =
-      android_errorWriteWithInfoLog(TAG, SUBTAG, UID, payload, DATA_LEN);
-  if (payload) {
-    ASSERT_LT(0, retval_android_errorWriteWithinInfoLog);
-  } else {
-    ASSERT_GT(0, retval_android_errorWriteWithinInfoLog);
-  }
-
-  sleep(2);
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    char* eventData = log_msg.msg();
-    if (!eventData) {
-      continue;
-    }
-
-    char* original = eventData;
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    char* event_data = log_msg.msg();
+    char* original = event_data;
 
     // Tag
-    int tag = get4LE(eventData);
-    eventData += 4;
-
-    if (tag != TAG) {
-      continue;
-    }
-
-    if (!payload) {
-      // This tag should not have been written because the data was null
-      ++count;
-      break;
+    auto* event_header = reinterpret_cast<android_event_header_t*>(event_data);
+    event_data += sizeof(android_event_header_t);
+    if (event_header->tag != tag) {
+      return;
     }
 
     // List type
-    ASSERT_EQ(EVENT_TYPE_LIST, eventData[0]);
-    eventData++;
-
-    // Number of elements in list
-    ASSERT_EQ(3, eventData[0]);
-    eventData++;
+    auto* event_list = reinterpret_cast<android_event_list_t*>(event_data);
+    ASSERT_EQ(EVENT_TYPE_LIST, event_list->type);
+    ASSERT_EQ(3, event_list->element_count);
+    event_data += sizeof(android_event_list_t);
 
     // Element #1: string type for subtag
-    ASSERT_EQ(EVENT_TYPE_STRING, eventData[0]);
-    eventData++;
-
-    unsigned subtag_len = strlen(SUBTAG);
-    if (subtag_len > 32) subtag_len = 32;
-    ASSERT_EQ(subtag_len, get4LE(eventData));
-    eventData += 4;
-
-    if (memcmp(SUBTAG, eventData, subtag_len)) {
-      continue;
+    auto* event_string_subtag = reinterpret_cast<android_event_string_t*>(event_data);
+    ASSERT_EQ(EVENT_TYPE_STRING, event_string_subtag->type);
+    int32_t subtag_len = strlen(subtag);
+    if (subtag_len > 32) {
+      subtag_len = 32;
     }
-    eventData += subtag_len;
+    ASSERT_EQ(subtag_len, event_string_subtag->length);
+    if (memcmp(subtag, &event_string_subtag->data, subtag_len)) {
+      return;
+    }
+    event_data += sizeof(android_event_string_t) + subtag_len;
 
     // Element #2: int type for uid
-    ASSERT_EQ(EVENT_TYPE_INT, eventData[0]);
-    eventData++;
-
-    ASSERT_EQ(UID, (int)get4LE(eventData));
-    eventData += 4;
+    auto* event_int_uid = reinterpret_cast<android_event_int_t*>(event_data);
+    ASSERT_EQ(EVENT_TYPE_INT, event_int_uid->type);
+    ASSERT_EQ(uid, event_int_uid->data);
+    event_data += sizeof(android_event_int_t);
 
     // Element #3: string type for data
-    ASSERT_EQ(EVENT_TYPE_STRING, eventData[0]);
-    eventData++;
-
-    size_t dataLen = get4LE(eventData);
-    eventData += 4;
-    if (DATA_LEN < 512) ASSERT_EQ(DATA_LEN, (int)dataLen);
-
-    if (memcmp(payload, eventData, dataLen)) {
-      continue;
+    auto* event_string_data = reinterpret_cast<android_event_string_t*>(event_data);
+    ASSERT_EQ(EVENT_TYPE_STRING, event_string_data->type);
+    int32_t message_data_len = event_string_data->length;
+    if (data_len < 512) {
+      ASSERT_EQ(data_len, message_data_len);
     }
+    if (memcmp(payload, &event_string_data->data, message_data_len) != 0) {
+      return;
+    }
+    event_data += sizeof(android_event_string_t);
 
-    if (DATA_LEN >= 512) {
-      eventData += dataLen;
+    if (data_len >= 512) {
+      event_data += message_data_len;
       // 4 bytes for the tag, and max_payload_buf should be truncated.
-      ASSERT_LE(4 + 512, eventData - original);       // worst expectations
-      ASSERT_GT(4 + DATA_LEN, eventData - original);  // must be truncated
+      ASSERT_LE(4 + 512, event_data - original);       // worst expectations
+      ASSERT_GT(4 + data_len, event_data - original);  // must be truncated
     }
+    *found = true;
+  };
 
-    ++count;
-  }
-
-  android_logger_list_close(logger_list);
+  RunLogTests(LOG_ID_EVENTS, write_function, check_function);
 }
 #endif
 
@@ -2203,11 +1971,8 @@
 #endif
 
 TEST(liblog, android_errorWriteWithInfoLog__android_logger_list_read__typical) {
-#ifdef TEST_PREFIX
-  int count;
-  android_errorWriteWithInfoLog_helper(UNIQUE_TAG(1), "test-subtag", -1,
-                                       max_payload_buf, 200, count);
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+#ifdef __ANDROID__
+  android_errorWriteWithInfoLog_helper(UNIQUE_TAG(1), "test-subtag", -1, max_payload_buf, 200);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
@@ -2215,24 +1980,21 @@
 
 TEST(liblog,
      android_errorWriteWithInfoLog__android_logger_list_read__data_too_large) {
-#ifdef TEST_PREFIX
-  int count;
-  android_errorWriteWithInfoLog_helper(UNIQUE_TAG(2), "test-subtag", -1,
-                                       max_payload_buf, sizeof(max_payload_buf),
-                                       count);
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+#ifdef __ANDROID__
+  android_errorWriteWithInfoLog_helper(UNIQUE_TAG(2), "test-subtag", -1, max_payload_buf,
+                                       sizeof(max_payload_buf));
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
+// TODO: Do we need to check that we didn't actually write anything if we return a failure here?
 TEST(liblog,
      android_errorWriteWithInfoLog__android_logger_list_read__null_data) {
-#ifdef TEST_PREFIX
-  int count;
-  android_errorWriteWithInfoLog_helper(UNIQUE_TAG(3), "test-subtag", -1, NULL,
-                                       200, count);
-  EXPECT_EQ(0, count);
+#ifdef __ANDROID__
+  int retval_android_errorWriteWithinInfoLog =
+      android_errorWriteWithInfoLog(UNIQUE_TAG(3), "test-subtag", -1, nullptr, 200);
+  ASSERT_GT(0, retval_android_errorWriteWithinInfoLog);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
@@ -2240,12 +2002,9 @@
 
 TEST(liblog,
      android_errorWriteWithInfoLog__android_logger_list_read__subtag_too_long) {
-#ifdef TEST_PREFIX
-  int count;
+#ifdef __ANDROID__
   android_errorWriteWithInfoLog_helper(
-      UNIQUE_TAG(4), "abcdefghijklmnopqrstuvwxyz now i know my abc", -1,
-      max_payload_buf, 200, count);
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+      UNIQUE_TAG(4), "abcdefghijklmnopqrstuvwxyz now i know my abc", -1, max_payload_buf, 200);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
@@ -2259,144 +2018,59 @@
   buf_write_test(max_payload_buf);
 }
 
-#ifdef TEST_PREFIX
-static void android_errorWriteLog_helper(int TAG, const char* SUBTAG,
-                                         int& count) {
-  TEST_PREFIX
-  struct logger_list* logger_list;
-
-  pid_t pid = getpid();
-
-  count = 0;
-
-  // Do a Before and After on the count to measure the effect. Decrement
-  // what we find in Before to set the stage.
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) break;
-
-    char* eventData = log_msg.msg();
-    if (!eventData) continue;
-
-    // Tag
-    int tag = get4LE(eventData);
-    eventData += 4;
-
-    if (tag != TAG) continue;
-
-    if (!SUBTAG) {
-      // This tag should not have been written because the data was null
-      --count;
-      break;
-    }
-
-    // List type
-    eventData++;
-    // Number of elements in list
-    eventData++;
-    // Element #1: string type for subtag
-    eventData++;
-
-    eventData += 4;
-
-    if (memcmp(SUBTAG, eventData, strlen(SUBTAG))) continue;
-    --count;
-  }
-
-  android_logger_list_close(logger_list);
-
-  // Do an After on the count to measure the effect.
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
-
-  int retval_android_errorWriteLog = android_errorWriteLog(TAG, SUBTAG);
-  if (SUBTAG) {
-    ASSERT_LT(0, retval_android_errorWriteLog);
-  } else {
-    ASSERT_GT(0, retval_android_errorWriteLog);
-  }
-
-  sleep(2);
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    char* eventData = log_msg.msg();
-    if (!eventData) {
-      continue;
-    }
-
-    // Tag
-    int tag = get4LE(eventData);
-    eventData += 4;
-
-    if (tag != TAG) {
-      continue;
-    }
-
-    if (!SUBTAG) {
-      // This tag should not have been written because the data was null
-      ++count;
-      break;
-    }
-
-    // List type
-    ASSERT_EQ(EVENT_TYPE_LIST, eventData[0]);
-    eventData++;
-
-    // Number of elements in list
-    ASSERT_EQ(3, eventData[0]);
-    eventData++;
-
-    // Element #1: string type for subtag
-    ASSERT_EQ(EVENT_TYPE_STRING, eventData[0]);
-    eventData++;
-
-    ASSERT_EQ(strlen(SUBTAG), get4LE(eventData));
-    eventData += 4;
-
-    if (memcmp(SUBTAG, eventData, strlen(SUBTAG))) {
-      continue;
-    }
-    ++count;
-  }
-
-  android_logger_list_close(logger_list);
-}
-#endif
-
 TEST(liblog, android_errorWriteLog__android_logger_list_read__success) {
-#ifdef TEST_PREFIX
-  int count;
-  android_errorWriteLog_helper(UNIQUE_TAG(5), "test-subtag", count);
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
+#ifdef __ANDROID__
+  int kTag = UNIQUE_TAG(5);
+  const char* kSubTag = "test-subtag";
+
+  auto write_function = [&] {
+    int retval_android_errorWriteLog = android_errorWriteLog(kTag, kSubTag);
+    ASSERT_LT(0, retval_android_errorWriteLog);
+  };
+
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    char* event_data = log_msg.msg();
+
+    // Tag
+    auto* event_header = reinterpret_cast<android_event_header_t*>(event_data);
+    event_data += sizeof(android_event_header_t);
+    if (event_header->tag != kTag) {
+      return;
+    }
+
+    // List type
+    auto* event_list = reinterpret_cast<android_event_list_t*>(event_data);
+    ASSERT_EQ(EVENT_TYPE_LIST, event_list->type);
+    ASSERT_EQ(3, event_list->element_count);
+    event_data += sizeof(android_event_list_t);
+
+    // Element #1: string type for subtag
+    auto* event_string_subtag = reinterpret_cast<android_event_string_t*>(event_data);
+    ASSERT_EQ(EVENT_TYPE_STRING, event_string_subtag->type);
+    int32_t subtag_len = strlen(kSubTag);
+    ASSERT_EQ(subtag_len, event_string_subtag->length);
+    if (memcmp(kSubTag, &event_string_subtag->data, subtag_len) == 0) {
+      *found = true;
+    }
+  };
+
+  RunLogTests(LOG_ID_EVENTS, write_function, check_function);
+
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
 TEST(liblog, android_errorWriteLog__android_logger_list_read__null_subtag) {
-#ifdef TEST_PREFIX
-  int count;
-  android_errorWriteLog_helper(UNIQUE_TAG(6), NULL, count);
-  EXPECT_EQ(0, count);
+#ifdef __ANDROID__
+  EXPECT_LT(android_errorWriteLog(UNIQUE_TAG(6), nullptr), 0);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
 // Do not retest logger list handling
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
 static int is_real_element(int type) {
   return ((type == EVENT_TYPE_INT) || (type == EVENT_TYPE_LONG) ||
           (type == EVENT_TYPE_STRING) || (type == EVENT_TYPE_FLOAT));
@@ -2551,9 +2225,9 @@
 
   return 0;
 }
-#endif  // TEST_PREFIX
+#endif  // __ANDROID__
 
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
 static const char* event_test_int32(uint32_t tag, size_t& expected_len) {
   android_log_context ctx;
 
@@ -2807,59 +2481,27 @@
 
 static void create_android_logger(const char* (*fn)(uint32_t tag,
                                                     size_t& expected_len)) {
-  TEST_PREFIX
-  struct logger_list* logger_list;
+  size_t expected_len;
+  const char* expected_string;
+  auto write_function = [&] {
+    expected_string = (*fn)(1005, expected_len);
+    ASSERT_NE(nullptr, expected_string);
+  };
 
   pid_t pid = getpid();
-
-  ASSERT_TRUE(NULL !=
-              (logger_list = android_logger_list_open(
-                   LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK,
-                   1000, pid)));
-
-#ifdef __ANDROID__
-  log_time ts(android_log_clockid());
-#else
-  log_time ts(CLOCK_REALTIME);
-#endif
-
-  size_t expected_len;
-  const char* expected_string = (*fn)(1005, expected_len);
-
-  if (!expected_string) {
-    android_logger_list_close(logger_list);
-    return;
-  }
-
-  usleep(1000000);
-
-  int count = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) {
-      break;
-    }
-
-    ASSERT_EQ(log_msg.entry.pid, pid);
-
-    if ((log_msg.entry.sec < (ts.tv_sec - 1)) ||
-        ((ts.tv_sec + 1) < log_msg.entry.sec) ||
-        ((size_t)log_msg.entry.len != expected_len) ||
-        (log_msg.id() != LOG_ID_EVENTS)) {
-      continue;
+  auto check_function = [&](log_msg log_msg, bool* found) {
+    if (static_cast<size_t>(log_msg.entry.len) != expected_len) {
+      return;
     }
 
     char* eventData = log_msg.msg();
 
-    ++count;
-
     AndroidLogFormat* logformat = android_log_format_new();
     EXPECT_TRUE(NULL != logformat);
     AndroidLogEntry entry;
     char msgBuf[1024];
-    int processBinaryLogBuffer = android_log_processBinaryLogBuffer(
-        &log_msg.entry_v1, &entry, NULL, msgBuf, sizeof(msgBuf));
+    int processBinaryLogBuffer =
+        android_log_processBinaryLogBuffer(&log_msg.entry, &entry, nullptr, msgBuf, sizeof(msgBuf));
     EXPECT_EQ(0, processBinaryLogBuffer);
     if (processBinaryLogBuffer == 0) {
       int line_overhead = 20;
@@ -2876,29 +2518,28 @@
     // test buffer reading API
     int buffer_to_string = -1;
     if (eventData) {
-      snprintf(msgBuf, sizeof(msgBuf), "I/[%" PRIu32 "]", get4LE(eventData));
+      auto* event_header = reinterpret_cast<android_event_header_t*>(eventData);
+      eventData += sizeof(android_event_header_t);
+      snprintf(msgBuf, sizeof(msgBuf), "I/[%" PRId32 "]", event_header->tag);
       print_barrier();
       fprintf(stderr, "%-10s(%5u): ", msgBuf, pid);
       memset(msgBuf, 0, sizeof(msgBuf));
-      buffer_to_string = android_log_buffer_to_string(
-          eventData + sizeof(uint32_t), log_msg.entry.len - sizeof(uint32_t),
-          msgBuf, sizeof(msgBuf));
+      buffer_to_string =
+          android_log_buffer_to_string(eventData, log_msg.entry.len, msgBuf, sizeof(msgBuf));
       fprintf(stderr, "%s\n", msgBuf);
       print_barrier();
     }
     EXPECT_EQ(0, buffer_to_string);
-    EXPECT_EQ(strlen(expected_string), strlen(msgBuf));
-    EXPECT_EQ(0, strcmp(expected_string, msgBuf));
-  }
+    EXPECT_STREQ(expected_string, msgBuf);
+    *found = true;
+  };
 
-  EXPECT_EQ(SUPPORTS_END_TO_END, count);
-
-  android_logger_list_close(logger_list);
+  RunLogTests(LOG_ID_EVENTS, write_function, check_function);
 }
 #endif
 
 TEST(liblog, create_android_logger_int32) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_int32);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2906,7 +2547,7 @@
 }
 
 TEST(liblog, create_android_logger_int64) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_int64);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2914,7 +2555,7 @@
 }
 
 TEST(liblog, create_android_logger_list_int64) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_list_int64);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2922,7 +2563,7 @@
 }
 
 TEST(liblog, create_android_logger_simple_automagic_list) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_simple_automagic_list);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2930,7 +2571,7 @@
 }
 
 TEST(liblog, create_android_logger_list_empty) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_list_empty);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2938,7 +2579,7 @@
 }
 
 TEST(liblog, create_android_logger_complex_nested_list) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_complex_nested_list);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2946,7 +2587,7 @@
 }
 
 TEST(liblog, create_android_logger_7_level_prefix) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_7_level_prefix);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2954,7 +2595,7 @@
 }
 
 TEST(liblog, create_android_logger_7_level_suffix) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_7_level_suffix);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2962,7 +2603,7 @@
 }
 
 TEST(liblog, create_android_logger_android_log_error_write) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_android_log_error_write);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -2970,14 +2611,13 @@
 }
 
 TEST(liblog, create_android_logger_android_log_error_write_null) {
-#ifdef TEST_PREFIX
+#ifdef __ANDROID__
   create_android_logger(event_test_android_log_error_write_null);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
 
-#ifdef USING_LOGGER_DEFAULT  // Do not retest logger list handling
 TEST(liblog, create_android_logger_overflow) {
   android_log_context ctx;
 
@@ -3005,23 +2645,7 @@
   ASSERT_TRUE(NULL == ctx);
 }
 
-TEST(liblog, android_log_write_list_buffer) {
-  __android_log_event_list ctx(1005);
-  ctx << 1005 << "tag_def"
-      << "(tag|1),(name|3),(format|3)";
-  std::string buffer(ctx);
-  ctx.close();
-
-  char msgBuf[1024];
-  memset(msgBuf, 0, sizeof(msgBuf));
-  EXPECT_EQ(android_log_buffer_to_string(buffer.data(), buffer.length(), msgBuf,
-                                         sizeof(msgBuf)),
-            0);
-  EXPECT_STREQ(msgBuf, "[1005,tag_def,(tag|1),(name|3),(format|3)]");
-}
-#endif  // USING_LOGGER_DEFAULT
-
-#ifdef USING_LOGGER_DEFAULT  // Do not retest pmsg functionality
+#ifdef ENABLE_FLAKY_TESTS
 #ifdef __ANDROID__
 #ifndef NO_PSTORE
 static const char __pmsg_file[] =
@@ -3099,7 +2723,7 @@
   EXPECT_EQ(ANDROID_LOG_VERBOSE, prio);
   EXPECT_FALSE(NULL == strstr(__pmsg_file, filename));
   EXPECT_EQ(len, sizeof(max_payload_buf));
-  EXPECT_EQ(0, strcmp(max_payload_buf, buf));
+  EXPECT_STREQ(max_payload_buf, buf);
 
   ++signaled;
   if ((len != sizeof(max_payload_buf)) || strcmp(max_payload_buf, buf)) {
@@ -3158,9 +2782,8 @@
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
-#endif  // USING_LOGGER_DEFAULT
+#endif  // ENABLE_FLAKY_TESTS
 
-#ifdef USING_LOGGER_DEFAULT  // Do not retest event mapping functionality
 TEST(liblog, android_lookupEventTagNum) {
 #ifdef __ANDROID__
   EventTagMap* map = android_openEventTagMap(NULL);
@@ -3177,4 +2800,3 @@
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
-#endif  // USING_LOGGER_DEFAULT
diff --git a/liblog/tests/liblog_test_default.cpp b/liblog/tests/liblog_test_default.cpp
deleted file mode 100644
index 9fc443c..0000000
--- a/liblog/tests/liblog_test_default.cpp
+++ /dev/null
@@ -1,5 +0,0 @@
-#ifdef __ANDROID__
-#include <log/log_transport.h>
-#define TEST_LOGGER LOGGER_DEFAULT
-#endif
-#include "liblog_test.cpp"
diff --git a/liblog/tests/liblog_test_stderr.cpp b/liblog/tests/liblog_test_stderr.cpp
deleted file mode 100644
index abc1b9c..0000000
--- a/liblog/tests/liblog_test_stderr.cpp
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <log/log_transport.h>
-#define liblog liblog_stderr
-#define TEST_LOGGER LOGGER_STDERR
-#define USING_LOGGER_STDERR
-#include "liblog_test.cpp"
diff --git a/liblog/tests/log_read_test.cpp b/liblog/tests/log_read_test.cpp
index 443c3ea..1be99aa 100644
--- a/liblog/tests/log_read_test.cpp
+++ b/liblog/tests/log_read_test.cpp
@@ -29,54 +29,6 @@
 // Do not use anything in log/log_time.h despite side effects of the above.
 #include <private/android_logger.h>
 
-TEST(liblog, __android_log_write__android_logger_list_read) {
-#ifdef __ANDROID__
-  pid_t pid = getpid();
-
-  struct logger_list* logger_list;
-  ASSERT_TRUE(
-      NULL !=
-      (logger_list = android_logger_list_open(
-           LOG_ID_MAIN, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid)));
-
-  struct timespec ts;
-  clock_gettime(CLOCK_MONOTONIC, &ts);
-  std::string buf = android::base::StringPrintf("pid=%u ts=%ld.%09ld", pid,
-                                                ts.tv_sec, ts.tv_nsec);
-  static const char tag[] =
-      "liblog.__android_log_write__android_logger_list_read";
-  static const char prio = ANDROID_LOG_DEBUG;
-  ASSERT_LT(0, __android_log_write(prio, tag, buf.c_str()));
-  usleep(1000000);
-
-  buf = std::string(&prio, sizeof(prio)) + tag + std::string("", 1) + buf +
-        std::string("", 1);
-
-  int count = 0;
-
-  for (;;) {
-    log_msg log_msg;
-    if (android_logger_list_read(logger_list, &log_msg) <= 0) break;
-
-    EXPECT_EQ(log_msg.entry.pid, pid);
-    // There may be a future where we leak "liblog" tagged LOG_ID_EVENT
-    // binary messages through so that logger losses can be correlated?
-    EXPECT_EQ(log_msg.id(), LOG_ID_MAIN);
-
-    if (log_msg.entry.len != buf.length()) continue;
-
-    if (buf != std::string(log_msg.msg(), log_msg.entry.len)) continue;
-
-    ++count;
-  }
-  android_logger_list_close(logger_list);
-
-  EXPECT_EQ(1, count);
-#else
-  GTEST_LOG_(INFO) << "This test does nothing.\n";
-#endif
-}
-
 TEST(liblog, android_logger_get_) {
 #ifdef __ANDROID__
   // This test assumes the log buffers are filled with noise from
diff --git a/liblog/tests/log_wrap_test.cpp b/liblog/tests/log_wrap_test.cpp
index ebf0b15..e06964f 100644
--- a/liblog/tests/log_wrap_test.cpp
+++ b/liblog/tests/log_wrap_test.cpp
@@ -27,12 +27,9 @@
 #include <log/log_properties.h>
 #include <log/log_read.h>
 #include <log/log_time.h>
-#include <log/log_transport.h>
 
 #ifdef __ANDROID__
 static void read_with_wrap() {
-  android_set_log_transport(LOGGER_LOGD);
-
   // Read the last line in the log to get a starting timestamp. We're assuming
   // the log is not empty.
   const int mode = ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK;
@@ -61,60 +58,27 @@
 
   android_logger_list_close(logger_list);
 }
-
-static void caught_signal(int /* signum */) {
-}
 #endif
 
 // b/64143705 confirm fixed
 TEST(liblog, wrap_mode_blocks) {
 #ifdef __ANDROID__
+  // The read call is expected to take up to 2 hours in the happy case.  There was a previous bug
+  // where it would take only 30 seconds due to an alarm() in logd_reader.cpp.  That alarm has been
+  // removed, so we check here that the read call blocks for a reasonable amount of time (5s).
+
+  struct sigaction ignore = {.sa_handler = [](int) { _exit(0); }};
+  struct sigaction old_sigaction;
+  sigaction(SIGALRM, &ignore, &old_sigaction);
+  alarm(5);
 
   android::base::Timer timer;
+  read_with_wrap();
 
-  // The read call is expected to take up to 2 hours in the happy case.
-  // We only want to make sure it waits for longer than 30s, but we can't
-  // use an alarm as the implementation uses it. So we run the test in
-  // a separate process.
-  pid_t pid = fork();
-
-  if (pid == 0) {
-    // child
-    read_with_wrap();
-    _exit(0);
-  }
-
-  struct sigaction ignore, old_sigaction;
-  memset(&ignore, 0, sizeof(ignore));
-  ignore.sa_handler = caught_signal;
-  sigemptyset(&ignore.sa_mask);
-  sigaction(SIGALRM, &ignore, &old_sigaction);
-  alarm(45);
-
-  bool killed = false;
-  for (;;) {
-    siginfo_t info = {};
-    // This wait will succeed if the child exits, or fail with EINTR if the
-    // alarm goes off first - a loose approximation to a timed wait.
-    int ret = waitid(P_PID, pid, &info, WEXITED);
-    if (ret >= 0 || errno != EINTR) {
-      EXPECT_EQ(ret, 0);
-      if (!killed) {
-        EXPECT_EQ(info.si_status, 0);
-      }
-      break;
-    }
-    unsigned int alarm_left = alarm(0);
-    if (alarm_left > 0) {
-      alarm(alarm_left);
-    } else {
-      kill(pid, SIGTERM);
-      killed = true;
-    }
-  }
+  FAIL() << "read_with_wrap() should not return before the alarm is triggered.";
 
   alarm(0);
-  EXPECT_GT(timer.duration(), std::chrono::seconds(40));
+  sigaction(SIGALRM, &old_sigaction, nullptr);
 #else
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
diff --git a/liblog/tests/logd_writer_test.cpp b/liblog/tests/logd_writer_test.cpp
new file mode 100644
index 0000000..b8e4726
--- /dev/null
+++ b/liblog/tests/logd_writer_test.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/un.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
+#include <android-base/unique_fd.h>
+#include <gtest/gtest.h>
+
+using android::base::StringPrintf;
+using android::base::unique_fd;
+
+// logd_writer takes advantage of the fact that connect() can be called multiple times for a DGRAM
+// socket.  This tests for that behavior.
+TEST(liblog, multi_connect_dgram_socket) {
+#ifdef __ANDROID__
+  if (getuid() != 0) {
+    GTEST_SKIP() << "Skipping test, must be run as root.";
+    return;
+  }
+  auto temp_dir = TemporaryDir();
+  auto socket_path = StringPrintf("%s/test_socket", temp_dir.path);
+
+  unique_fd server_socket;
+
+  auto open_server_socket = [&] {
+    server_socket.reset(TEMP_FAILURE_RETRY(socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0)));
+    ASSERT_TRUE(server_socket.ok());
+
+    sockaddr_un server_sockaddr = {};
+    server_sockaddr.sun_family = AF_UNIX;
+    strlcpy(server_sockaddr.sun_path, socket_path.c_str(), sizeof(server_sockaddr.sun_path));
+    ASSERT_EQ(0,
+              TEMP_FAILURE_RETRY(bind(server_socket, reinterpret_cast<sockaddr*>(&server_sockaddr),
+                                      sizeof(server_sockaddr))));
+  };
+
+  // Open the server socket.
+  open_server_socket();
+
+  // Open the client socket.
+  auto client_socket =
+      unique_fd{TEMP_FAILURE_RETRY(socket(AF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0))};
+  ASSERT_TRUE(client_socket.ok());
+  sockaddr_un client_sockaddr = {};
+  client_sockaddr.sun_family = AF_UNIX;
+  strlcpy(client_sockaddr.sun_path, socket_path.c_str(), sizeof(client_sockaddr.sun_path));
+  ASSERT_EQ(0,
+            TEMP_FAILURE_RETRY(connect(client_socket, reinterpret_cast<sockaddr*>(&client_sockaddr),
+                                       sizeof(client_sockaddr))));
+
+  // Ensure that communication works.
+  constexpr static char kSmoke[] = "smoke test";
+  ssize_t smoke_len = sizeof(kSmoke);
+  ASSERT_EQ(smoke_len, TEMP_FAILURE_RETRY(write(client_socket, kSmoke, sizeof(kSmoke))));
+  char read_buf[512];
+  ASSERT_EQ(smoke_len, TEMP_FAILURE_RETRY(read(server_socket, read_buf, sizeof(read_buf))));
+  ASSERT_STREQ(kSmoke, read_buf);
+
+  // Close the server socket.
+  server_socket.reset();
+  ASSERT_EQ(0, unlink(socket_path.c_str())) << strerror(errno);
+
+  // Ensure that write() from the client returns an error since the server is closed.
+  ASSERT_EQ(-1, TEMP_FAILURE_RETRY(write(client_socket, kSmoke, sizeof(kSmoke))));
+  ASSERT_EQ(errno, ECONNREFUSED) << strerror(errno);
+
+  // Open the server socket again.
+  open_server_socket();
+
+  // Reconnect the same client socket.
+  ASSERT_EQ(0,
+            TEMP_FAILURE_RETRY(connect(client_socket, reinterpret_cast<sockaddr*>(&client_sockaddr),
+                                       sizeof(client_sockaddr))))
+      << strerror(errno);
+
+  // Ensure that communication works.
+  ASSERT_EQ(smoke_len, TEMP_FAILURE_RETRY(write(client_socket, kSmoke, sizeof(kSmoke))));
+  ASSERT_EQ(smoke_len, TEMP_FAILURE_RETRY(read(server_socket, read_buf, sizeof(read_buf))));
+  ASSERT_STREQ(kSmoke, read_buf);
+#else
+  GTEST_LOG_(INFO) << "This test does nothing.\n";
+#endif
+}
\ No newline at end of file
diff --git a/liblog/tests/logprint_test.cpp b/liblog/tests/logprint_test.cpp
new file mode 100644
index 0000000..72e53f9
--- /dev/null
+++ b/liblog/tests/logprint_test.cpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <log/logprint.h>
+
+#include <string>
+
+#include <gtest/gtest.h>
+
+#include <log/log_read.h>
+
+size_t convertPrintable(char* p, const char* message, size_t messageLen);
+
+TEST(liblog, convertPrintable_ascii) {
+  auto input = "easy string, output same";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+  EXPECT_STREQ(input, output);
+}
+
+TEST(liblog, convertPrintable_escapes) {
+  // Note that \t is not escaped.
+  auto input = "escape\a\b\t\v\f\r\\";
+  auto expected_output = "escape\\a\\b\t\\v\\f\\r\\\\";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+  EXPECT_STREQ(expected_output, output);
+}
+
+TEST(liblog, convertPrintable_validutf8) {
+  auto input = u8"¢ह€𐍈";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+  EXPECT_STREQ(input, output);
+}
+
+TEST(liblog, convertPrintable_invalidutf8) {
+  auto input = "\x80\xC2\x01\xE0\xA4\x06\xE0\x06\xF0\x90\x8D\x06\xF0\x90\x06\xF0\x0E";
+  auto expected_output =
+      "\\x80\\xC2\\x01\\xE0\\xA4\\x06\\xE0\\x06\\xF0\\x90\\x8D\\x06\\xF0\\x90\\x06\\xF0\\x0E";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+  EXPECT_STREQ(expected_output, output);
+}
+
+TEST(liblog, convertPrintable_mixed) {
+  auto input =
+      u8"\x80\xC2¢ह€𐍈\x01\xE0\xA4\x06¢ह€𐍈\xE0\x06\a\b\xF0\x90¢ह€𐍈\x8D\x06\xF0\t\t\x90\x06\xF0\x0E";
+  auto expected_output =
+      u8"\\x80\\xC2¢ह€𐍈\\x01\\xE0\\xA4\\x06¢ह€𐍈\\xE0\\x06\\a\\b\\xF0\\x90¢ह€𐍈\\x8D\\x06\\xF0\t\t"
+      u8"\\x90\\x06\\xF0\\x0E";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+  EXPECT_STREQ(expected_output, output);
+}
+
+TEST(liblog, log_print_different_header_size) {
+  constexpr int32_t kPid = 123;
+  constexpr uint32_t kTid = 456;
+  constexpr uint32_t kSec = 1000;
+  constexpr uint32_t kNsec = 999;
+  constexpr uint32_t kLid = LOG_ID_MAIN;
+  constexpr uint32_t kUid = 987;
+  constexpr char kPriority = ANDROID_LOG_ERROR;
+
+  auto create_buf = [](char* buf, size_t len, uint16_t hdr_size) {
+    memset(buf, 0, len);
+    logger_entry* header = reinterpret_cast<logger_entry*>(buf);
+    header->hdr_size = hdr_size;
+    header->pid = kPid;
+    header->tid = kTid;
+    header->sec = kSec;
+    header->nsec = kNsec;
+    header->lid = kLid;
+    header->uid = kUid;
+    char* message = buf + header->hdr_size;
+    uint16_t message_len = 0;
+    message[message_len++] = kPriority;
+    message[message_len++] = 'T';
+    message[message_len++] = 'a';
+    message[message_len++] = 'g';
+    message[message_len++] = '\0';
+    message[message_len++] = 'm';
+    message[message_len++] = 's';
+    message[message_len++] = 'g';
+    message[message_len++] = '!';
+    message[message_len++] = '\0';
+    header->len = message_len;
+  };
+
+  auto check_entry = [&](const AndroidLogEntry& entry) {
+    EXPECT_EQ(kSec, static_cast<uint32_t>(entry.tv_sec));
+    EXPECT_EQ(kNsec, static_cast<uint32_t>(entry.tv_nsec));
+    EXPECT_EQ(kPriority, entry.priority);
+    EXPECT_EQ(kUid, static_cast<uint32_t>(entry.uid));
+    EXPECT_EQ(kPid, entry.pid);
+    EXPECT_EQ(kTid, static_cast<uint32_t>(entry.tid));
+    EXPECT_STREQ("Tag", entry.tag);
+    EXPECT_EQ(4U, entry.tagLen);  // Apparently taglen includes the nullptr?
+    EXPECT_EQ(4U, entry.messageLen);
+    EXPECT_STREQ("msg!", entry.message);
+  };
+  alignas(logger_entry) char buf[LOGGER_ENTRY_MAX_LEN];
+  create_buf(buf, sizeof(buf), sizeof(logger_entry));
+
+  AndroidLogEntry entry_normal_size;
+  ASSERT_EQ(0,
+            android_log_processLogBuffer(reinterpret_cast<logger_entry*>(buf), &entry_normal_size));
+  check_entry(entry_normal_size);
+
+  create_buf(buf, sizeof(buf), sizeof(logger_entry) + 3);
+  AndroidLogEntry entry_odd_size;
+  ASSERT_EQ(0, android_log_processLogBuffer(reinterpret_cast<logger_entry*>(buf), &entry_odd_size));
+  check_entry(entry_odd_size);
+}
\ No newline at end of file
diff --git a/libmeminfo/.clang-format b/libmeminfo/.clang-format
deleted file mode 120000
index 1af4f51..0000000
--- a/libmeminfo/.clang-format
+++ /dev/null
@@ -1 +0,0 @@
-../.clang-format-4
\ No newline at end of file
diff --git a/libmeminfo/Android.bp b/libmeminfo/Android.bp
deleted file mode 100644
index fc022bd..0000000
--- a/libmeminfo/Android.bp
+++ /dev/null
@@ -1,78 +0,0 @@
-//
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_defaults {
-    name: "libmeminfo_defaults",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    shared_libs: [
-        "libbase",
-        "liblog",
-        "libprocinfo",
-    ],
-}
-
-cc_library {
-    name: "libmeminfo",
-    defaults: ["libmeminfo_defaults"],
-    export_include_dirs: ["include"],
-    export_shared_lib_headers: ["libbase"],
-    srcs: [
-        "pageacct.cpp",
-        "procmeminfo.cpp",
-        "sysmeminfo.cpp",
-    ],
-}
-
-cc_test {
-    name: "libmeminfo_test",
-    defaults: ["libmeminfo_defaults"],
-
-    static_libs: [
-        "libmeminfo",
-        "libbase",
-        "liblog",
-    ],
-
-    srcs: [
-        "libmeminfo_test.cpp"
-    ],
-
-    data: [
-        "testdata1/*",
-        "testdata2/*"
-    ],
-}
-
-cc_benchmark {
-    name: "libmeminfo_benchmark",
-    srcs: [
-        "libmeminfo_benchmark.cpp",
-    ],
-    static_libs : [
-        "libbase",
-        "liblog",
-        "libmeminfo",
-        "libprocinfo",
-    ],
-
-    data: [
-        "testdata1/*",
-    ],
-}
diff --git a/libmeminfo/OWNERS b/libmeminfo/OWNERS
deleted file mode 100644
index 26e71fe..0000000
--- a/libmeminfo/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-sspatil@google.com
diff --git a/libmeminfo/include/meminfo/meminfo.h b/libmeminfo/include/meminfo/meminfo.h
deleted file mode 100644
index 2fc7867..0000000
--- a/libmeminfo/include/meminfo/meminfo.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <string>
-#include <vector>
-
-namespace android {
-namespace meminfo {
-
-struct MemUsage {
-    uint64_t vss;
-    uint64_t rss;
-    uint64_t pss;
-    uint64_t uss;
-
-    uint64_t swap;
-    uint64_t swap_pss;
-
-    uint64_t private_clean;
-    uint64_t private_dirty;
-    uint64_t shared_clean;
-    uint64_t shared_dirty;
-
-    MemUsage()
-        : vss(0),
-          rss(0),
-          pss(0),
-          uss(0),
-          swap(0),
-          swap_pss(0),
-          private_clean(0),
-          private_dirty(0),
-          shared_clean(0),
-          shared_dirty(0) {}
-
-    ~MemUsage() = default;
-
-    void clear() {
-        vss = rss = pss = uss = swap = swap_pss = 0;
-        private_clean = private_dirty = shared_clean = shared_dirty = 0;
-    }
-};
-
-struct Vma {
-    uint64_t start;
-    uint64_t end;
-    uint64_t offset;
-    uint16_t flags;
-    std::string name;
-
-    Vma() : start(0), end(0), offset(0), flags(0), name("") {}
-    Vma(uint64_t s, uint64_t e, uint64_t off, uint16_t f, const char* n)
-        : start(s), end(e), offset(off), flags(f), name(n) {}
-    ~Vma() = default;
-
-    void clear() { memset(&usage, 0, sizeof(usage)); }
-
-    // Memory usage of this mapping.
-    MemUsage usage;
-};
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/include/meminfo/pageacct.h b/libmeminfo/include/meminfo/pageacct.h
deleted file mode 100644
index 8483d84..0000000
--- a/libmeminfo/include/meminfo/pageacct.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <string>
-#include <vector>
-
-#include <android-base/unique_fd.h>
-
-namespace android {
-namespace meminfo {
-
-class PageAcct final {
-    // Class for per-page accounting by using kernel provided interfaces like
-    // kpagecount, kpageflags etc.
-  public:
-    static bool KernelHasPageIdle() {
-        return (access("/sys/kernel/mm/page_idle/bitmap", R_OK | W_OK) == 0);
-    }
-
-    bool InitPageAcct(bool pageidle_enable = false);
-    bool PageFlags(uint64_t pfn, uint64_t* flags);
-    bool PageMapCount(uint64_t pfn, uint64_t* mapcount);
-
-    int IsPageIdle(uint64_t pfn);
-
-    // The only way to create PageAcct object
-    static PageAcct& Instance() {
-        static PageAcct instance;
-        return instance;
-    }
-
-    ~PageAcct() = default;
-
-  private:
-    PageAcct() : kpagecount_fd_(-1), kpageflags_fd_(-1), pageidle_fd_(-1) {}
-    int MarkPageIdle(uint64_t pfn) const;
-    int GetPageIdle(uint64_t pfn) const;
-
-    // Non-copyable & Non-movable
-    PageAcct(const PageAcct&) = delete;
-    PageAcct& operator=(const PageAcct&) = delete;
-    PageAcct& operator=(PageAcct&&) = delete;
-    PageAcct(PageAcct&&) = delete;
-
-    ::android::base::unique_fd kpagecount_fd_;
-    ::android::base::unique_fd kpageflags_fd_;
-    ::android::base::unique_fd pageidle_fd_;
-};
-
-// Returns if the page present bit is set in the value
-// passed in.
-bool page_present(uint64_t pagemap_val);
-
-// Returns if the page swapped bit is set in the value
-// passed in.
-bool page_swapped(uint64_t pagemap_val);
-
-// Returns the page frame number (physical page) from
-// pagemap value
-uint64_t page_pfn(uint64_t pagemap_val);
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/include/meminfo/procmeminfo.h b/libmeminfo/include/meminfo/procmeminfo.h
deleted file mode 100644
index 1fb4151..0000000
--- a/libmeminfo/include/meminfo/procmeminfo.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-
-#include <string>
-#include <vector>
-
-#include "meminfo.h"
-
-namespace android {
-namespace meminfo {
-
-using VmaCallback = std::function<void(const Vma&)>;
-
-class ProcMemInfo final {
-    // Per-process memory accounting
-  public:
-    // Reset the working set accounting of the process via /proc/<pid>/clear_refs
-    static bool ResetWorkingSet(pid_t pid);
-
-    ProcMemInfo(pid_t pid, bool get_wss = false, uint64_t pgflags = 0, uint64_t pgflags_mask = 0);
-
-    const std::vector<Vma>& Maps();
-    const MemUsage& Usage();
-    const MemUsage& Wss();
-
-    // Same as Maps() except, only valid for reading working set using CONFIG_IDLE_PAGE_TRACKING
-    // support in kernel. If the kernel support doesn't exist, the function will return an empty
-    // vector.
-    const std::vector<Vma>& MapsWithPageIdle();
-
-    // Collect all 'vma' or 'maps' from /proc/<pid>/smaps and store them in 'maps_'. Returns a
-    // constant reference to the vma vector after the collection is done.
-    //
-    // Each 'struct Vma' is *fully* populated by this method (unlike SmapsOrRollup).
-    const std::vector<Vma>& Smaps(const std::string& path = "");
-
-    // This method reads /proc/<pid>/smaps and calls the callback() for each
-    // vma or map that it finds. The map is converted to 'struct Vma' object which is then
-    // passed to the callback.
-    // Returns 'false' if the file is malformed.
-    bool ForEachVma(const VmaCallback& callback);
-
-    // Used to parse either of /proc/<pid>/{smaps, smaps_rollup} and record the process's
-    // Pss and Private memory usage in 'stats'.  In particular, the method only populates the fields
-    // of the MemUsage structure that are intended to be used by Android's periodic Pss collection.
-    //
-    // The method populates the following statistics in order to be fast an efficient.
-    //   Pss
-    //   Rss
-    //   Uss
-    //   private_clean
-    //   private_dirty
-    //   SwapPss
-    // All other fields of MemUsage are zeroed.
-    bool SmapsOrRollup(MemUsage* stats) const;
-
-    // Used to parse either of /proc/<pid>/{smaps, smaps_rollup} and record the process's
-    // Pss.
-    // Returns 'true' on success and the value of Pss in the out parameter.
-    bool SmapsOrRollupPss(uint64_t* pss) const;
-
-    const std::vector<uint16_t>& SwapOffsets();
-
-    // Reads /proc/<pid>/pagemap for this process for each page within
-    // the 'vma' and stores that in 'pagemap'. It is assumed that the 'vma'
-    // is obtained by calling Maps() or 'ForEachVma' for the same object. No special checks
-    // are made to see if 'vma' is *valid*.
-    // Returns false if anything goes wrong, 'true' otherwise.
-    bool PageMap(const Vma& vma, std::vector<uint64_t>* pagemap);
-
-    ~ProcMemInfo() = default;
-
-  private:
-    bool ReadMaps(bool get_wss, bool use_pageidle = false);
-    bool ReadVmaStats(int pagemap_fd, Vma& vma, bool get_wss, bool use_pageidle);
-
-    pid_t pid_;
-    bool get_wss_;
-    uint64_t pgflags_;
-    uint64_t pgflags_mask_;
-
-    std::vector<Vma> maps_;
-
-    MemUsage usage_;
-    std::vector<uint16_t> swap_offsets_;
-};
-
-// Makes callback for each 'vma' or 'map' found in file provided. The file is expected to be in the
-// same format as /proc/<pid>/smaps. Returns 'false' if the file is malformed.
-bool ForEachVmaFromFile(const std::string& path, const VmaCallback& callback);
-
-// Returns if the kernel supports /proc/<pid>/smaps_rollup. Assumes that the
-// calling process has access to the /proc/<pid>/smaps_rollup.
-// Returns 'false' if the calling process has no permission to read the file if it exists
-// of if the file doesn't exist.
-bool IsSmapsRollupSupported(pid_t pid);
-
-// Same as ProcMemInfo::SmapsOrRollup but reads the statistics directly
-// from a file. The file MUST be in the same format as /proc/<pid>/smaps
-// or /proc/<pid>/smaps_rollup
-bool SmapsOrRollupFromFile(const std::string& path, MemUsage* stats);
-
-// Same as ProcMemInfo::SmapsOrRollupPss but reads the statistics directly
-// from a file and returns total Pss in kB. The file MUST be in the same format
-// as /proc/<pid>/smaps or /proc/<pid>/smaps_rollup
-bool SmapsOrRollupPssFromFile(const std::string& path, uint64_t* pss);
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/include/meminfo/sysmeminfo.h b/libmeminfo/include/meminfo/sysmeminfo.h
deleted file mode 100644
index 8388920..0000000
--- a/libmeminfo/include/meminfo/sysmeminfo.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-
-#include <functional>
-#include <map>
-#include <string>
-#include <vector>
-
-namespace android {
-namespace meminfo {
-
-class SysMemInfo final {
-    // System or Global memory accounting
-  public:
-    static constexpr const char* kMemTotal = "MemTotal:";
-    static constexpr const char* kMemFree = "MemFree:";
-    static constexpr const char* kMemBuffers = "Buffers:";
-    static constexpr const char* kMemCached = "Cached:";
-    static constexpr const char* kMemShmem = "Shmem:";
-    static constexpr const char* kMemSlab = "Slab:";
-    static constexpr const char* kMemSReclaim = "SReclaimable:";
-    static constexpr const char* kMemSUnreclaim = "SUnreclaim:";
-    static constexpr const char* kMemSwapTotal = "SwapTotal:";
-    static constexpr const char* kMemSwapFree = "SwapFree:";
-    static constexpr const char* kMemMapped = "Mapped:";
-    static constexpr const char* kMemVmallocUsed = "VmallocUsed:";
-    static constexpr const char* kMemPageTables = "PageTables:";
-    static constexpr const char* kMemKernelStack = "KernelStack:";
-
-    static const std::vector<std::string> kDefaultSysMemInfoTags;
-
-    SysMemInfo() = default;
-
-    // Parse /proc/meminfo and read values that are needed
-    bool ReadMemInfo(const std::string& path = "/proc/meminfo");
-    bool ReadMemInfo(const std::vector<std::string>& tags, std::vector<uint64_t>* out,
-                     const std::string& path = "/proc/meminfo");
-    bool ReadMemInfo(std::vector<uint64_t>* out, const std::string& path = "/proc/meminfo");
-
-    // Parse /proc/vmallocinfo and return total physical memory mapped
-    // in vmalloc area by the kernel.
-    // Note that this deliberately ignores binder buffers. They are _always_
-    // mapped in a process and are counted for in each process.
-    uint64_t ReadVmallocInfo();
-
-    // getters
-    uint64_t mem_total_kb() { return mem_in_kb_[kMemTotal]; }
-    uint64_t mem_free_kb() { return mem_in_kb_[kMemFree]; }
-    uint64_t mem_buffers_kb() { return mem_in_kb_[kMemBuffers]; }
-    uint64_t mem_cached_kb() { return mem_in_kb_[kMemCached]; }
-    uint64_t mem_shmem_kb() { return mem_in_kb_[kMemShmem]; }
-    uint64_t mem_slab_kb() { return mem_in_kb_[kMemSlab]; }
-    uint64_t mem_slab_reclaimable_kb() { return mem_in_kb_[kMemSReclaim]; }
-    uint64_t mem_slab_unreclaimable_kb() { return mem_in_kb_[kMemSUnreclaim]; }
-    uint64_t mem_swap_kb() { return mem_in_kb_[kMemSwapTotal]; }
-    uint64_t mem_swap_free_kb() { return mem_in_kb_[kMemSwapFree]; }
-    uint64_t mem_mapped_kb() { return mem_in_kb_[kMemMapped]; }
-    uint64_t mem_vmalloc_used_kb() { return mem_in_kb_[kMemVmallocUsed]; }
-    uint64_t mem_page_tables_kb() { return mem_in_kb_[kMemPageTables]; }
-    uint64_t mem_kernel_stack_kb() { return mem_in_kb_[kMemKernelStack]; }
-    uint64_t mem_zram_kb(const std::string& zram_dev = "");
-
-  private:
-    std::map<std::string, uint64_t> mem_in_kb_;
-    bool MemZramDevice(const std::string& zram_dev, uint64_t* mem_zram_dev);
-    bool ReadMemInfo(const std::vector<std::string>& tags, const std::string& path,
-                     std::function<void(const std::string&, uint64_t)> store_val);
-};
-
-// Parse /proc/vmallocinfo and return total physical memory mapped
-// in vmalloc area by the kernel. Note that this deliberately ignores binder buffers. They are
-// _always_ mapped in a process and are counted for in each process.
-uint64_t ReadVmallocInfo(const std::string& path = "/proc/vmallocinfo");
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/libdmabufinfo/Android.bp b/libmeminfo/libdmabufinfo/Android.bp
deleted file mode 100644
index 4aed45c..0000000
--- a/libmeminfo/libdmabufinfo/Android.bp
+++ /dev/null
@@ -1,56 +0,0 @@
-//
-// Copyright (C) 2019 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-cc_defaults {
-    name: "dmabufinfo_defaults",
-    static_libs: [
-        "libbase",
-        "libprocinfo",
-    ],
-    shared_libs: [
-        "liblog",
-    ],
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-Wextra",
-    ],
-}
-
-cc_library_static {
-    name: "libdmabufinfo",
-    vendor_available: true,
-    defaults: ["dmabufinfo_defaults"],
-    export_include_dirs: ["include"],
-    srcs: [
-         "dmabufinfo.cpp",
-    ],
-}
-
-cc_test {
-    name: "dmabufinfo_test",
-    defaults: ["dmabufinfo_defaults"],
-    srcs: [
-         "dmabufinfo_test.cpp"
-    ],
-
-    static_libs: [
-        "libc++fs",
-        "libdmabufinfo",
-        "libion",
-        "libmeminfo",
-    ],
-}
diff --git a/libmeminfo/libdmabufinfo/dmabufinfo.cpp b/libmeminfo/libdmabufinfo/dmabufinfo.cpp
deleted file mode 100644
index 9fb22a1..0000000
--- a/libmeminfo/libdmabufinfo/dmabufinfo.cpp
+++ /dev/null
@@ -1,265 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dirent.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <filesystem>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <procinfo/process_map.h>
-
-#include <dmabufinfo/dmabufinfo.h>
-
-namespace android {
-namespace dmabufinfo {
-
-static bool FileIsDmaBuf(const std::string& path) {
-    return ::android::base::StartsWith(path, "/dmabuf");
-}
-
-static bool ReadDmaBufFdInfo(pid_t pid, int fd, std::string* name, std::string* exporter,
-                             uint64_t* count) {
-    std::string fdinfo = ::android::base::StringPrintf("/proc/%d/fdinfo/%d", pid, fd);
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(fdinfo.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        LOG(ERROR) << "Failed to open dmabuf info from debugfs";
-        return false;
-    }
-
-    char* line = nullptr;
-    size_t len = 0;
-    while (getline(&line, &len, fp.get()) > 0) {
-        switch (line[0]) {
-            case 'c':
-                if (strncmp(line, "count:", 6) == 0) {
-                    char* c = line + 6;
-                    *count = strtoull(c, nullptr, 10);
-                }
-                break;
-            case 'e':
-                if (strncmp(line, "exp_name:", 9) == 0) {
-                    char* c = line + 9;
-                    *exporter = ::android::base::Trim(c);
-                }
-                break;
-            case 'n':
-                if (strncmp(line, "name:", 5) == 0) {
-                    char* c = line + 5;
-                    *name = ::android::base::Trim(std::string(c));
-                }
-                break;
-        }
-    }
-
-    free(line);
-    return true;
-}
-
-// TODO: std::filesystem::is_symlink fails to link on vendor code,
-// forcing this workaround.
-// Move back to libc++fs once it is vendor-available. See b/124012728
-static bool is_symlink(const char *filename)
-{
-    struct stat p_statbuf;
-    if (lstat(filename, &p_statbuf) < 0) {
-        return false;
-    }
-    if (S_ISLNK(p_statbuf.st_mode) == 1) {
-        return true;
-    }
-    return false;
-}
-
-static bool ReadDmaBufFdRefs(pid_t pid, std::vector<DmaBuffer>* dmabufs) {
-    std::string fdpath = ::android::base::StringPrintf("/proc/%d/fd", pid);
-
-    std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir(fdpath.c_str()), closedir);
-    if (!dir) {
-        LOG(ERROR) << "Failed to open " << fdpath << " directory" << std::endl;
-        return false;
-    }
-    struct dirent* dent;
-    while ((dent = readdir(dir.get()))) {
-        std::string path =
-            ::android::base::StringPrintf("%s/%s", fdpath.c_str(), dent->d_name);
-
-        if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..") ||
-            !is_symlink(path.c_str())) {
-            continue;
-        }
-
-        std::string target;
-        if (!::android::base::Readlink(path, &target)) {
-            LOG(ERROR) << "Failed to find target for symlink: " << path;
-            return false;
-        }
-
-        if (!FileIsDmaBuf(target)) {
-            continue;
-        }
-
-        int fd;
-        if (!::android::base::ParseInt(dent->d_name, &fd)) {
-            LOG(ERROR) << "Dmabuf fd: " << path << " is invalid";
-            return false;
-        }
-
-        // Set defaults in case the kernel doesn't give us the information
-        // we need in fdinfo
-        std::string name = "<unknown>";
-        std::string exporter = "<unknown>";
-        uint64_t count = 0;
-        if (!ReadDmaBufFdInfo(pid, fd, &name, &exporter, &count)) {
-            LOG(ERROR) << "Failed to read fdinfo for: " << path;
-            return false;
-        }
-
-        struct stat sb;
-        if (stat(path.c_str(), &sb) < 0) {
-            PLOG(ERROR) << "Failed to stat: " << path;
-            return false;
-        }
-
-        uint64_t inode = sb.st_ino;
-        auto buf = std::find_if(dmabufs->begin(), dmabufs->end(),
-                                [&inode](const DmaBuffer& dbuf) { return dbuf.inode() == inode; });
-        if (buf != dmabufs->end()) {
-            if (buf->name() == "" || buf->name() == "<unknown>") buf->SetName(name);
-            if (buf->exporter() == "" || buf->exporter() == "<unknown>") buf->SetExporter(exporter);
-            if (buf->count() == 0) buf->SetCount(count);
-            buf->AddFdRef(pid);
-            continue;
-        }
-
-        DmaBuffer& db = dmabufs->emplace_back(sb.st_ino, sb.st_blocks * 512, count, exporter, name);
-        db.AddFdRef(pid);
-    }
-
-    return true;
-}
-
-static bool ReadDmaBufMapRefs(pid_t pid, std::vector<DmaBuffer>* dmabufs) {
-    std::string mapspath = ::android::base::StringPrintf("/proc/%d/maps", pid);
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(mapspath.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        LOG(ERROR) << "Failed to open maps for pid: " << pid;
-        return false;
-    }
-
-    char* line = nullptr;
-    size_t len = 0;
-
-    // Process the map if it is dmabuf. Add map reference to existing object in 'dmabufs'
-    // if it was already found. If it wasn't create a new one and append it to 'dmabufs'
-    auto account_dmabuf = [&](uint64_t start, uint64_t end, uint16_t /* flags */,
-                              uint64_t /* pgoff */, ino_t inode, const char* name) {
-        // no need to look into this mapping if it is not dmabuf
-        if (!FileIsDmaBuf(std::string(name))) {
-            return;
-        }
-
-        auto buf = std::find_if(dmabufs->begin(), dmabufs->end(),
-                                [&inode](const DmaBuffer& dbuf) { return dbuf.inode() == inode; });
-        if (buf != dmabufs->end()) {
-            buf->AddMapRef(pid);
-            return;
-        }
-
-        // We have a new buffer, but unknown count and name
-        DmaBuffer& dbuf = dmabufs->emplace_back(inode, end - start, 0, "<unknown>", "<unknown>");
-        dbuf.AddMapRef(pid);
-    };
-
-    while (getline(&line, &len, fp.get()) > 0) {
-        if (!::android::procinfo::ReadMapFileContent(line, account_dmabuf)) {
-            LOG(ERROR) << "Failed t parse maps for pid: " << pid;
-            return false;
-        }
-    }
-
-    free(line);
-    return true;
-}
-
-// Public methods
-bool ReadDmaBufInfo(std::vector<DmaBuffer>* dmabufs, const std::string& path) {
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        LOG(ERROR) << "Failed to open dmabuf info from debugfs";
-        return false;
-    }
-
-    char* line = nullptr;
-    size_t len = 0;
-    dmabufs->clear();
-    while (getline(&line, &len, fp.get()) > 0) {
-        // The new dmabuf bufinfo format adds inode number and a name at the end
-        // We are looking for lines as follows:
-        // size     flags       mode        count  exp_name ino         name
-        // 01048576 00000002    00000007    00000001    ion 00018758    CAMERA
-        // 01048576 00000002    00000007    00000001    ion 00018758
-        uint64_t size, count;
-        char* exporter_name = nullptr;
-        ino_t inode;
-        char* name = nullptr;
-        int matched = sscanf(line, "%" SCNu64 "%*x %*x %" SCNu64 " %ms %lu %ms", &size, &count,
-                             &exporter_name, &inode, &name);
-        if (matched < 4) {
-            continue;
-        }
-        dmabufs->emplace_back(inode, size, count, exporter_name, matched > 4 ? name : "");
-        free(exporter_name);
-        free(name);
-    }
-
-    free(line);
-
-    return true;
-}
-
-bool ReadDmaBufInfo(pid_t pid, std::vector<DmaBuffer>* dmabufs) {
-    dmabufs->clear();
-    return AppendDmaBufInfo(pid, dmabufs);
-}
-
-bool AppendDmaBufInfo(pid_t pid, std::vector<DmaBuffer>* dmabufs) {
-    if (!ReadDmaBufFdRefs(pid, dmabufs)) {
-        LOG(ERROR) << "Failed to read dmabuf fd references";
-        return false;
-    }
-
-    if (!ReadDmaBufMapRefs(pid, dmabufs)) {
-        LOG(ERROR) << "Failed to read dmabuf map references";
-        return false;
-    }
-    return true;
-}
-
-}  // namespace dmabufinfo
-}  // namespace android
diff --git a/libmeminfo/libdmabufinfo/dmabufinfo_test.cpp b/libmeminfo/libdmabufinfo/dmabufinfo_test.cpp
deleted file mode 100644
index eb53e57..0000000
--- a/libmeminfo/libdmabufinfo/dmabufinfo_test.cpp
+++ /dev/null
@@ -1,484 +0,0 @@
-/* Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gtest/gtest.h>
-#include <inttypes.h>
-#include <linux/dma-buf.h>
-#include <poll.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <fstream>
-#include <string>
-#include <unordered_map>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/unique_fd.h>
-#include <ion/ion.h>
-
-#include <dmabufinfo/dmabufinfo.h>
-
-using namespace ::android::dmabufinfo;
-using namespace ::android::base;
-
-#define MAX_HEAP_NAME 32
-#define ION_HEAP_ANY_MASK (0x7fffffff)
-
-struct ion_heap_data {
-    char name[MAX_HEAP_NAME];
-    __u32 type;
-    __u32 heap_id;
-    __u32 reserved0;
-    __u32 reserved1;
-    __u32 reserved2;
-};
-
-#ifndef DMA_BUF_SET_NAME
-#define DMA_BUF_SET_NAME _IOW(DMA_BUF_BASE, 5, const char*)
-#endif
-
-class fd_sharer {
-  public:
-    fd_sharer();
-    ~fd_sharer() { kill(); }
-
-    bool ok() const { return child_pid > 0; }
-    bool sendfd(int fd);
-    bool kill();
-    pid_t pid() const { return child_pid; }
-
-  private:
-    unique_fd parent_fd, child_fd;
-    pid_t child_pid;
-
-    void run();
-};
-
-fd_sharer::fd_sharer() : parent_fd{}, child_fd{}, child_pid{-1} {
-    bool sp_ok = android::base::Socketpair(SOCK_STREAM, &parent_fd, &child_fd);
-    if (!sp_ok) return;
-
-    child_pid = fork();
-    if (child_pid < 0) return;
-
-    if (child_pid == 0) run();
-}
-
-bool fd_sharer::kill() {
-    int err = ::kill(child_pid, SIGKILL);
-    if (err < 0) return false;
-
-    return ::waitpid(child_pid, nullptr, 0) == child_pid;
-}
-
-void fd_sharer::run() {
-    while (true) {
-        int fd;
-        char unused = 0;
-
-        iovec iov{};
-        iov.iov_base = &unused;
-        iov.iov_len = sizeof(unused);
-
-        msghdr msg{};
-        msg.msg_iov = &iov;
-        msg.msg_iovlen = 1;
-
-        char cmsg_buf[CMSG_SPACE(sizeof(fd))];
-        msg.msg_control = cmsg_buf;
-        msg.msg_controllen = sizeof(cmsg_buf);
-
-        cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
-        cmsg->cmsg_level = SOL_SOCKET;
-        cmsg->cmsg_type = SCM_RIGHTS;
-        cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
-
-        ssize_t s = TEMP_FAILURE_RETRY(recvmsg(child_fd, &msg, 0));
-        if (s == -1) break;
-
-        s = TEMP_FAILURE_RETRY(write(child_fd, &unused, sizeof(unused)));
-        if (s == -1) break;
-    }
-}
-
-bool fd_sharer::sendfd(int fd) {
-    char unused = 0;
-
-    iovec iov{};
-    iov.iov_base = &unused;
-    iov.iov_len = sizeof(unused);
-
-    msghdr msg{};
-    msg.msg_iov = &iov;
-    msg.msg_iovlen = 1;
-
-    char cmsg_buf[CMSG_SPACE(sizeof(fd))];
-    msg.msg_control = cmsg_buf;
-    msg.msg_controllen = sizeof(cmsg_buf);
-
-    cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
-    cmsg->cmsg_level = SOL_SOCKET;
-    cmsg->cmsg_type = SCM_RIGHTS;
-    cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
-
-    int* fd_buf = reinterpret_cast<int*>(CMSG_DATA(cmsg));
-    *fd_buf = fd;
-
-    ssize_t s = TEMP_FAILURE_RETRY(sendmsg(parent_fd, &msg, 0));
-    if (s == -1) return false;
-
-    // The target process installs the fd into its fd table during recvmsg().
-    // So if we return now, there's a brief window between sendfd() finishing
-    // and libmemoryinfo actually seeing that the buffer has been shared.  This
-    // window is just large enough to break tests.
-    //
-    // To work around this, wait for the target process to respond with a dummy
-    // byte, with a timeout of 1 s.
-    pollfd p{};
-    p.fd = parent_fd;
-    p.events = POLL_IN;
-    int ready = poll(&p, 1, 1000);
-    if (ready != 1) return false;
-
-    s = TEMP_FAILURE_RETRY(read(parent_fd, &unused, sizeof(unused)));
-    if (s == -1) return false;
-
-    return true;
-}
-
-#define EXPECT_ONE_BUF_EQ(_bufptr, _name, _fdrefs, _maprefs, _expname, _count, _size) \
-    do {                                                                              \
-        EXPECT_EQ(_bufptr->name(), _name);                                            \
-        EXPECT_EQ(_bufptr->fdrefs().size(), _fdrefs);                                 \
-        EXPECT_EQ(_bufptr->maprefs().size(), _maprefs);                               \
-        EXPECT_EQ(_bufptr->exporter(), _expname);                                     \
-        EXPECT_EQ(_bufptr->count(), _count);                                          \
-        EXPECT_EQ(_bufptr->size(), _size);                                            \
-    } while (0)
-
-#define EXPECT_PID_IN_FDREFS(_bufptr, _pid, _expect)                         \
-    do {                                                                     \
-        const std::unordered_map<pid_t, int>& _fdrefs = _bufptr->fdrefs();   \
-        auto _ref = _fdrefs.find(_pid);                                      \
-        EXPECT_EQ((_ref != _fdrefs.end()), _expect);                         \
-    } while (0)
-
-#define EXPECT_PID_IN_MAPREFS(_bufptr, _pid, _expect)                        \
-    do {                                                                     \
-        const std::unordered_map<pid_t, int>& _maprefs = _bufptr->maprefs(); \
-        auto _ref = _maprefs.find(_pid);                                     \
-        EXPECT_EQ((_ref != _maprefs.end()), _expect);                        \
-    } while (0)
-
-TEST(DmaBufInfoParser, TestReadDmaBufInfo) {
-    std::string bufinfo = R"bufinfo(00045056    00000002    00000007    00000002    ion 00022069    
-	Attached Devices:
-Total 0 devices attached
-01048576    00000002    00000007    00000001    ion 00019834    CAMERA
-	Attached Devices:
-	soc:qcom,cam_smmu:msm_cam_smmu_icp
-Total 1 devices attached)bufinfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(bufinfo, tf.fd));
-    std::string path = std::string(tf.path);
-
-    std::vector<DmaBuffer> dmabufs;
-    EXPECT_TRUE(ReadDmaBufInfo(&dmabufs, path));
-
-    EXPECT_EQ(dmabufs.size(), 2UL);
-
-    EXPECT_EQ(dmabufs[0].size(), 45056UL);
-    EXPECT_EQ(dmabufs[0].inode(), 22069UL);
-    EXPECT_EQ(dmabufs[0].count(), 2UL);
-    EXPECT_EQ(dmabufs[0].exporter(), "ion");
-    EXPECT_TRUE(dmabufs[0].name().empty());
-    EXPECT_EQ(dmabufs[0].total_refs(), 0ULL);
-    EXPECT_TRUE(dmabufs[0].fdrefs().empty());
-    EXPECT_TRUE(dmabufs[0].maprefs().empty());
-
-    EXPECT_EQ(dmabufs[1].size(), 1048576UL);
-    EXPECT_EQ(dmabufs[1].inode(), 19834UL);
-    EXPECT_EQ(dmabufs[1].count(), 1UL);
-    EXPECT_EQ(dmabufs[1].exporter(), "ion");
-    EXPECT_FALSE(dmabufs[1].name().empty());
-    EXPECT_EQ(dmabufs[1].name(), "CAMERA");
-    EXPECT_EQ(dmabufs[1].total_refs(), 0ULL);
-    EXPECT_TRUE(dmabufs[1].fdrefs().empty());
-    EXPECT_TRUE(dmabufs[1].maprefs().empty());
-}
-
-class DmaBufTester : public ::testing::Test {
-  public:
-    DmaBufTester() : ion_fd(ion_open()), ion_heap_mask(get_ion_heap_mask()) {}
-
-    ~DmaBufTester() {
-        if (is_valid()) {
-            ion_close(ion_fd);
-        }
-    }
-
-    bool is_valid() { return (ion_fd >= 0 && ion_heap_mask > 0); }
-
-    unique_fd allocate(uint64_t size, const std::string& name) {
-        int fd;
-        int err = ion_alloc_fd(ion_fd, size, 0, ion_heap_mask, 0, &fd);
-        if (err < 0) {
-            return unique_fd{err};
-        }
-
-        if (!name.empty()) {
-            err = ioctl(fd, DMA_BUF_SET_NAME, name.c_str());
-            if (err < 0) return unique_fd{-errno};
-        }
-
-        return unique_fd{fd};
-    }
-
-    void readAndCheckDmaBuffer(std::vector<DmaBuffer>* dmabufs, pid_t pid, const std::string name,
-                               size_t fdrefs_size, size_t maprefs_size, const std::string exporter,
-                               size_t refcount, uint64_t buf_size, bool expectFdrefs,
-                               bool expectMapRefs) {
-        EXPECT_TRUE(ReadDmaBufInfo(pid, dmabufs));
-        EXPECT_EQ(dmabufs->size(), 1UL);
-        EXPECT_ONE_BUF_EQ(dmabufs->begin(), name, fdrefs_size, maprefs_size, exporter, refcount,
-                          buf_size);
-        // Make sure the buffer has the right pid too.
-        EXPECT_PID_IN_FDREFS(dmabufs->begin(), pid, expectFdrefs);
-        EXPECT_PID_IN_MAPREFS(dmabufs->begin(), pid, expectMapRefs);
-    }
-
-    bool checkPidRef(DmaBuffer& dmabuf, pid_t pid, int expectFdrefs) {
-        int fdrefs = dmabuf.fdrefs().find(pid)->second;
-        return fdrefs == expectFdrefs;
-    }
-
-  private:
-    int get_ion_heap_mask() {
-        if (ion_fd < 0) {
-            return 0;
-        }
-
-        if (ion_is_legacy(ion_fd)) {
-            // Since ION is still in staging, we've seen that the heap mask ids are also
-            // changed across kernels for some reason. So, here we basically ask for a buffer
-            // from _any_ heap.
-            return ION_HEAP_ANY_MASK;
-        }
-
-        int cnt;
-        int err = ion_query_heap_cnt(ion_fd, &cnt);
-        if (err < 0) {
-            return err;
-        }
-
-        std::vector<ion_heap_data> heaps;
-        heaps.resize(cnt);
-        err = ion_query_get_heaps(ion_fd, cnt, &heaps[0]);
-        if (err < 0) {
-            return err;
-        }
-
-        unsigned int ret = 0;
-        for (auto& it : heaps) {
-            if (!strcmp(it.name, "ion_system_heap")) {
-                ret |= (1 << it.heap_id);
-            }
-        }
-
-        return ret;
-    }
-
-    unique_fd ion_fd;
-    const int ion_heap_mask;
-};
-
-TEST_F(DmaBufTester, TestFdRef) {
-    // Test if a dma buffer is found while the corresponding file descriptor
-    // is open
-    ASSERT_TRUE(is_valid());
-    pid_t pid = getpid();
-    std::vector<DmaBuffer> dmabufs;
-    {
-        // Allocate one buffer and make sure the library can see it
-        unique_fd buf = allocate(4096, "dmabuftester-4k");
-        ASSERT_GT(buf, 0) << "Allocated buffer is invalid";
-        ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-
-        EXPECT_EQ(dmabufs.size(), 1UL);
-        EXPECT_ONE_BUF_EQ(dmabufs.begin(), "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL);
-
-        // Make sure the buffer has the right pid too.
-        EXPECT_PID_IN_FDREFS(dmabufs.begin(), pid, true);
-    }
-
-    // Now make sure the buffer has disappeared
-    ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-    EXPECT_TRUE(dmabufs.empty());
-}
-
-TEST_F(DmaBufTester, TestMapRef) {
-    // Test to make sure we can find a buffer if the fd is closed but the buffer
-    // is mapped
-    ASSERT_TRUE(is_valid());
-    pid_t pid = getpid();
-    std::vector<DmaBuffer> dmabufs;
-    {
-        // Allocate one buffer and make sure the library can see it
-        unique_fd buf = allocate(4096, "dmabuftester-4k");
-        ASSERT_GT(buf, 0) << "Allocated buffer is invalid";
-        auto ptr = mmap(0, 4096, PROT_READ, MAP_SHARED, buf, 0);
-        ASSERT_NE(ptr, MAP_FAILED);
-        ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-
-        EXPECT_EQ(dmabufs.size(), 1UL);
-        EXPECT_ONE_BUF_EQ(dmabufs.begin(), "dmabuftester-4k", 1UL, 1UL, "ion", 2UL, 4096ULL);
-
-        // Make sure the buffer has the right pid too.
-        EXPECT_PID_IN_FDREFS(dmabufs.begin(), pid, true);
-        EXPECT_PID_IN_MAPREFS(dmabufs.begin(), pid, true);
-
-        // close the file descriptor and re-read the stats
-        buf.reset(-1);
-        ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-
-        EXPECT_EQ(dmabufs.size(), 1UL);
-        EXPECT_ONE_BUF_EQ(dmabufs.begin(), "<unknown>", 0UL, 1UL, "<unknown>", 0UL, 4096ULL);
-
-        EXPECT_PID_IN_FDREFS(dmabufs.begin(), pid, false);
-        EXPECT_PID_IN_MAPREFS(dmabufs.begin(), pid, true);
-
-        // unmap the bufer and lose all references
-        munmap(ptr, 4096);
-    }
-
-    // Now make sure the buffer has disappeared
-    ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-    EXPECT_TRUE(dmabufs.empty());
-}
-
-TEST_F(DmaBufTester, TestSharedfd) {
-    // Each time a shared buffer is received over a socket, the remote process
-    // will take an extra reference on it.
-
-    ASSERT_TRUE(is_valid());
-
-    pid_t pid = getpid();
-    std::vector<DmaBuffer> dmabufs;
-    {
-        fd_sharer sharer{};
-        ASSERT_TRUE(sharer.ok());
-        // Allocate one buffer and make sure the library can see it
-        unique_fd buf = allocate(4096, "dmabuftester-4k");
-        ASSERT_GT(buf, 0) << "Allocated buffer is invalid";
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL, true,
-                              false);
-
-        ASSERT_TRUE(sharer.sendfd(buf));
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 2UL, 4096ULL, true,
-                              false);
-        EXPECT_TRUE(checkPidRef(dmabufs[0], pid, 1));
-        readAndCheckDmaBuffer(&dmabufs, sharer.pid(), "dmabuftester-4k", 1UL, 0UL, "ion", 2UL,
-                              4096ULL, true, false);
-        EXPECT_TRUE(checkPidRef(dmabufs[0], sharer.pid(), 1));
-
-        ASSERT_TRUE(sharer.sendfd(buf));
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 3UL, 4096ULL, true,
-                              false);
-        EXPECT_TRUE(checkPidRef(dmabufs[0], pid, 1));
-        readAndCheckDmaBuffer(&dmabufs, sharer.pid(), "dmabuftester-4k", 1UL, 0UL, "ion", 3UL,
-                              4096ULL, true, false);
-        EXPECT_TRUE(checkPidRef(dmabufs[0], sharer.pid(), 2));
-
-        ASSERT_TRUE(sharer.kill());
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL, true,
-                              false);
-    }
-
-    // Now make sure the buffer has disappeared
-    ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-    EXPECT_TRUE(dmabufs.empty());
-}
-
-TEST_F(DmaBufTester, DupFdTest) {
-    // dup()ing an fd will make this process take an extra reference on the
-    // shared buffer.
-
-    ASSERT_TRUE(is_valid());
-
-    pid_t pid = getpid();
-    std::vector<DmaBuffer> dmabufs;
-    {
-        // Allocate one buffer and make sure the library can see it
-        unique_fd buf = allocate(4096, "dmabuftester-4k");
-        ASSERT_GT(buf, 0) << "Allocated buffer is invalid";
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL, true,
-                              false);
-
-        unique_fd buf2{dup(buf)};
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 2UL, 4096ULL, true,
-                              false);
-        EXPECT_TRUE(checkPidRef(dmabufs[0], pid, 2));
-
-        close(buf2.release());
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL, true,
-                              false);
-        EXPECT_TRUE(checkPidRef(dmabufs[0], pid, 1));
-    }
-
-    // Now make sure the buffer has disappeared
-    ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-    EXPECT_TRUE(dmabufs.empty());
-}
-
-TEST_F(DmaBufTester, ForkTest) {
-    // fork()ing a child will cause the child to automatically take a reference
-    // on any existing shared buffers.
-    ASSERT_TRUE(is_valid());
-
-    pid_t pid = getpid();
-    std::vector<DmaBuffer> dmabufs;
-    {
-        // Allocate one buffer and make sure the library can see it
-        unique_fd buf = allocate(4096, "dmabuftester-4k");
-        ASSERT_GT(buf, 0) << "Allocated buffer is invalid";
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL, true,
-                              false);
-        fd_sharer sharer{};
-        ASSERT_TRUE(sharer.ok());
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 2UL, 4096ULL, true,
-                              false);
-        readAndCheckDmaBuffer(&dmabufs, sharer.pid(), "dmabuftester-4k", 1UL, 0UL, "ion", 2UL,
-                              4096ULL, true, false);
-        ASSERT_TRUE(sharer.kill());
-        readAndCheckDmaBuffer(&dmabufs, pid, "dmabuftester-4k", 1UL, 0UL, "ion", 1UL, 4096ULL, true,
-                              false);
-    }
-
-    // Now make sure the buffer has disappeared
-    ASSERT_TRUE(ReadDmaBufInfo(pid, &dmabufs));
-    EXPECT_TRUE(dmabufs.empty());
-}
-
-int main(int argc, char** argv) {
-    ::testing::InitGoogleTest(&argc, argv);
-    ::android::base::InitLogging(argv, android::base::StderrLogger);
-    return RUN_ALL_TESTS();
-}
diff --git a/libmeminfo/libdmabufinfo/include/dmabufinfo/dmabufinfo.h b/libmeminfo/libdmabufinfo/include/dmabufinfo/dmabufinfo.h
deleted file mode 100644
index a6e7f69..0000000
--- a/libmeminfo/libdmabufinfo/include/dmabufinfo/dmabufinfo.h
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <set>
-#include <string>
-#include <vector>
-#include <unordered_map>
-
-namespace android {
-namespace dmabufinfo {
-
-struct DmaBuffer {
-  public:
-    DmaBuffer(ino_t inode, uint64_t size, uint64_t count, const std::string& exporter,
-              const std::string& name)
-        : inode_(inode), size_(size), count_(count), exporter_(exporter), name_(name) {
-        total_refs_ = 0;
-    }
-    DmaBuffer() = default;
-    ~DmaBuffer() = default;
-
-    // Adds one file descriptor reference for the given pid
-    void AddFdRef(pid_t pid) {
-        AddRefToPidMap(pid, &fdrefs_);
-        total_refs_++;
-    }
-
-    // Adds one map reference for the given pid
-    void AddMapRef(pid_t pid) {
-        AddRefToPidMap(pid, &maprefs_);
-        total_refs_++;
-    }
-
-    // Getters for each property
-    uint64_t size() const { return size_; }
-    const std::unordered_map<pid_t, int>& fdrefs() const { return fdrefs_; }
-    const std::unordered_map<pid_t, int>& maprefs() const { return maprefs_; }
-    ino_t inode() const { return inode_; }
-    uint64_t total_refs() const { return total_refs_; }
-    uint64_t count() const { return count_; };
-    const std::set<pid_t>& pids() const { return pids_; }
-    const std::string& name() const { return name_; }
-    const std::string& exporter() const { return exporter_; }
-    void SetName(const std::string& name) { name_ = name; }
-    void SetExporter(const std::string& exporter) { exporter_ = exporter; }
-    void SetCount(uint64_t count) { count_ = count; }
-    uint64_t Pss() const { return size_ / pids_.size(); }
-
-    bool operator==(const DmaBuffer& rhs) {
-        return (inode_ == rhs.inode()) && (size_ == rhs.size()) && (name_ == rhs.name()) &&
-               (exporter_ == rhs.exporter());
-    }
-
-  private:
-    ino_t inode_;
-    uint64_t size_;
-    uint64_t count_;
-    uint64_t total_refs_;
-    std::set<pid_t> pids_;
-    std::string exporter_;
-    std::string name_;
-    std::unordered_map<pid_t, int> fdrefs_;
-    std::unordered_map<pid_t, int> maprefs_;
-    void AddRefToPidMap(pid_t pid, std::unordered_map<pid_t, int>* map) {
-        // The first time we find a ref, we set the ref count to 1
-        // otherwise, increment the existing ref count
-        auto [it, inserted] = map->insert(std::make_pair(pid, 1));
-        if (!inserted)
-            it->second++;
-        pids_.insert(pid);
-    }
-};
-
-// Read and return current dma buf objects from
-// DEBUGFS/dma_buf/bufinfo. The references to each dma buffer are not
-// populated here and will return an empty vector.
-// Returns false if something went wrong with the function, true otherwise.
-bool ReadDmaBufInfo(std::vector<DmaBuffer>* dmabufs,
-                    const std::string& path = "/sys/kernel/debug/dma_buf/bufinfo");
-
-
-// Read and return dmabuf objects for a given process without the help
-// of DEBUGFS
-// Returns false if something went wrong with the function, true otherwise.
-bool ReadDmaBufInfo(pid_t pid, std::vector<DmaBuffer>* dmabufs);
-
-// Append new dmabuf objects from a given process to an existing vector.
-// When the vector contains an existing element with a matching inode,
-// the reference counts will be updated.
-// Does not depend on DEBUGFS.
-// Returns false if something went wrong with the function, true otherwise.
-bool AppendDmaBufInfo(pid_t pid, std::vector<DmaBuffer>* dmabufs);
-
-}  // namespace dmabufinfo
-}  // namespace android
diff --git a/libmeminfo/libdmabufinfo/tools/Android.bp b/libmeminfo/libdmabufinfo/tools/Android.bp
deleted file mode 100644
index 224b68e..0000000
--- a/libmeminfo/libdmabufinfo/tools/Android.bp
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright (C) 2019 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-cc_binary {
-    name: "dmabuf_dump",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    srcs: ["dmabuf_dump.cpp"],
-    shared_libs: [
-        "libbase",
-    ],
-    static_libs: [
-        "libdmabufinfo",
-    ],
-    product_specific: true,
-}
\ No newline at end of file
diff --git a/libmeminfo/libdmabufinfo/tools/dmabuf_dump.cpp b/libmeminfo/libdmabufinfo/tools/dmabuf_dump.cpp
deleted file mode 100644
index 48901b1..0000000
--- a/libmeminfo/libdmabufinfo/tools/dmabuf_dump.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dirent.h>
-#include <errno.h>
-#include <getopt.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <fstream>
-#include <iostream>
-#include <map>
-#include <set>
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <android-base/stringprintf.h>
-#include <dmabufinfo/dmabufinfo.h>
-
-using DmaBuffer = ::android::dmabufinfo::DmaBuffer;
-
-[[noreturn]] static void usage(int exit_status) {
-    fprintf(stderr,
-            "Usage: %s [-ah] [PID] \n"
-            "-a\t show all dma buffers (ion) in big table, [buffer x process] grid \n"
-            "-h\t show this help\n"
-            "  \t If PID is supplied, the dmabuf information for that process is shown.\n",
-            getprogname());
-
-    exit(exit_status);
-}
-
-static std::string GetProcessComm(const pid_t pid) {
-    std::string pid_path = android::base::StringPrintf("/proc/%d/comm", pid);
-    std::ifstream in{pid_path};
-    if (!in) return std::string("N/A");
-    std::string line;
-    std::getline(in, line);
-    if (!in) return std::string("N/A");
-    return line;
-}
-
-static void PrintDmaBufTable(const std::vector<DmaBuffer>& bufs) {
-    if (bufs.empty()) {
-        printf("dmabuf info not found ¯\\_(ツ)_/¯\n");
-        return;
-    }
-
-    // Find all unique pids in the input vector, create a set
-    std::set<pid_t> pid_set;
-    for (auto& buf : bufs) {
-        pid_set.insert(buf.pids().begin(), buf.pids().end());
-    }
-
-    // Format the header string spaced and separated with '|'
-    printf("    Dmabuf Inode |            Size |      Ref Counts |");
-    for (auto pid : pid_set) {
-        printf("%16s:%-5d |", GetProcessComm(pid).c_str(), pid);
-    }
-    printf("\n");
-
-    // holds per-process dmabuf size in kB
-    std::map<pid_t, uint64_t> per_pid_size = {};
-    uint64_t dmabuf_total_size = 0;
-
-    // Iterate through all dmabufs and collect per-process sizes, refs
-    for (auto& buf : bufs) {
-        printf("%16ju |%13" PRIu64 " kB |%16" PRIu64 " |", static_cast<uintmax_t>(buf.inode()),
-               buf.size() / 1024, buf.total_refs());
-        // Iterate through each process to find out per-process references for each buffer,
-        // gather total size used by each process etc.
-        for (pid_t pid : pid_set) {
-            int pid_refs = 0;
-            if (buf.fdrefs().count(pid) == 1) {
-                // Get the total number of ref counts the process is holding
-                // on this buffer. We don't differentiate between mmap or fd.
-                pid_refs += buf.fdrefs().at(pid);
-                if (buf.maprefs().count(pid) == 1) {
-                    pid_refs += buf.maprefs().at(pid);
-                }
-            }
-
-            if (pid_refs) {
-                // Add up the per-pid total size. Note that if a buffer is mapped
-                // in 2 different processes, the size will be shown as mapped or opened
-                // in both processes. This is intended for visibility.
-                //
-                // If one wants to get the total *unique* dma buffers, they can simply
-                // sum the size of all dma bufs shown by the tool
-                per_pid_size[pid] += buf.size() / 1024;
-                printf("%17d refs |", pid_refs);
-            } else {
-                printf("%22s |", "--");
-            }
-        }
-        dmabuf_total_size += buf.size() / 1024;
-        printf("\n");
-    }
-
-    printf("------------------------------------\n");
-    printf("%-16s  %13" PRIu64 " kB |%16s |", "TOTALS", dmabuf_total_size, "n/a");
-    for (auto pid : pid_set) {
-        printf("%19" PRIu64 " kB |", per_pid_size[pid]);
-    }
-    printf("\n");
-
-    return;
-}
-
-static void PrintDmaBufPerProcess(const std::vector<DmaBuffer>& bufs) {
-    if (bufs.empty()) {
-        printf("dmabuf info not found ¯\\_(ツ)_/¯\n");
-        return;
-    }
-
-    // Create a reverse map from pid to dmabufs
-    std::unordered_map<pid_t, std::set<ino_t>> pid_to_inodes = {};
-    uint64_t total_size = 0;  // Total size of dmabufs in the system
-    uint64_t kernel_rss = 0;  // Total size of dmabufs NOT mapped or opened by a process
-    for (auto& buf : bufs) {
-        for (auto pid : buf.pids()) {
-            pid_to_inodes[pid].insert(buf.inode());
-        }
-        total_size += buf.size();
-        if (buf.fdrefs().empty() && buf.maprefs().empty()) {
-            kernel_rss += buf.size();
-        }
-    }
-    // Create an inode to dmabuf map. We know inodes are unique..
-    std::unordered_map<ino_t, DmaBuffer> inode_to_dmabuf;
-    for (auto buf : bufs) {
-        inode_to_dmabuf[buf.inode()] = buf;
-    }
-
-    uint64_t total_rss = 0, total_pss = 0;
-    for (auto& [pid, inodes] : pid_to_inodes) {
-        uint64_t pss = 0;
-        uint64_t rss = 0;
-
-        printf("%16s:%-5d\n", GetProcessComm(pid).c_str(), pid);
-        printf("%22s %16s %16s %16s %16s\n", "Name", "Rss", "Pss", "nr_procs", "Inode");
-        for (auto& inode : inodes) {
-            DmaBuffer& buf = inode_to_dmabuf[inode];
-            printf("%22s %13" PRIu64 " kB %13" PRIu64 " kB %16zu %16" PRIuMAX "\n",
-                   buf.name().empty() ? "<unknown>" : buf.name().c_str(), buf.size() / 1024,
-                   buf.Pss() / 1024, buf.pids().size(), static_cast<uintmax_t>(buf.inode()));
-            rss += buf.size();
-            pss += buf.Pss();
-        }
-        printf("%22s %13" PRIu64 " kB %13" PRIu64 " kB %16s\n", "PROCESS TOTAL", rss / 1024,
-               pss / 1024, "");
-        printf("----------------------\n");
-        total_rss += rss;
-        total_pss += pss;
-    }
-    printf("dmabuf total: %" PRIu64 " kB kernel_rss: %" PRIu64 " kB userspace_rss: %" PRIu64
-           " kB userspace_pss: %" PRIu64 " kB\n ",
-           total_size / 1024, kernel_rss / 1024, total_rss / 1024, total_pss / 1024);
-}
-
-static bool ReadDmaBufs(std::vector<DmaBuffer>* bufs) {
-    bufs->clear();
-
-    if (!ReadDmaBufInfo(bufs)) {
-        fprintf(stderr, "debugfs entry for dmabuf not available, skipping\n");
-        return false;
-    }
-
-    std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir("/proc"), closedir);
-    if (!dir) {
-        fprintf(stderr, "Failed to open /proc directory\n");
-        bufs->clear();
-        return false;
-    }
-
-    struct dirent* dent;
-    while ((dent = readdir(dir.get()))) {
-        if (dent->d_type != DT_DIR) continue;
-
-        int pid = atoi(dent->d_name);
-        if (pid == 0) {
-            continue;
-        }
-
-        if (!AppendDmaBufInfo(pid, bufs)) {
-            fprintf(stderr, "Unable to read dmabuf info for pid %d\n", pid);
-            bufs->clear();
-            return false;
-        }
-    }
-
-    return true;
-}
-
-int main(int argc, char* argv[]) {
-    struct option longopts[] = {{"all", no_argument, nullptr, 'a'},
-                                {"help", no_argument, nullptr, 'h'},
-                                {0, 0, nullptr, 0}};
-
-    int opt;
-    bool show_table = false;
-    while ((opt = getopt_long(argc, argv, "ah", longopts, nullptr)) != -1) {
-        switch (opt) {
-            case 'a':
-                show_table = true;
-                break;
-            case 'h':
-                usage(EXIT_SUCCESS);
-            default:
-                usage(EXIT_FAILURE);
-        }
-    }
-
-    pid_t pid = -1;
-    if (optind < argc) {
-        if (show_table) {
-            fprintf(stderr, "Invalid arguments: -a does not need arguments\n");
-            usage(EXIT_FAILURE);
-        }
-        if (optind != (argc - 1)) {
-            fprintf(stderr, "Invalid arguments - only one [PID] argument is allowed\n");
-            usage(EXIT_FAILURE);
-        }
-        pid = atoi(argv[optind]);
-        if (pid == 0) {
-            fprintf(stderr, "Invalid process id %s\n", argv[optind]);
-            usage(EXIT_FAILURE);
-        }
-    }
-
-    std::vector<DmaBuffer> bufs;
-    if (pid != -1) {
-        if (!ReadDmaBufInfo(pid, &bufs)) {
-            fprintf(stderr, "Unable to read dmabuf info for %d\n", pid);
-            exit(EXIT_FAILURE);
-        }
-    } else {
-        if (!ReadDmaBufs(&bufs)) exit(EXIT_FAILURE);
-    }
-
-    // Show the old dmabuf table, inode x process
-    if (show_table) {
-        PrintDmaBufTable(bufs);
-        return 0;
-    }
-
-    PrintDmaBufPerProcess(bufs);
-
-    return 0;
-}
diff --git a/libmeminfo/libmeminfo_benchmark.cpp b/libmeminfo/libmeminfo_benchmark.cpp
deleted file mode 100644
index d88919b..0000000
--- a/libmeminfo/libmeminfo_benchmark.cpp
+++ /dev/null
@@ -1,544 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <meminfo/procmeminfo.h>
-#include <meminfo/sysmeminfo.h>
-
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <string>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/unique_fd.h>
-
-#include <benchmark/benchmark.h>
-
-using ::android::meminfo::MemUsage;
-using ::android::meminfo::ProcMemInfo;
-using ::android::meminfo::SmapsOrRollupFromFile;
-using ::android::meminfo::SysMemInfo;
-
-enum {
-    MEMINFO_TOTAL,
-    MEMINFO_FREE,
-    MEMINFO_BUFFERS,
-    MEMINFO_CACHED,
-    MEMINFO_SHMEM,
-    MEMINFO_SLAB,
-    MEMINFO_SLAB_RECLAIMABLE,
-    MEMINFO_SLAB_UNRECLAIMABLE,
-    MEMINFO_SWAP_TOTAL,
-    MEMINFO_SWAP_FREE,
-    MEMINFO_ZRAM_TOTAL,
-    MEMINFO_MAPPED,
-    MEMINFO_VMALLOC_USED,
-    MEMINFO_PAGE_TABLES,
-    MEMINFO_KERNEL_STACK,
-    MEMINFO_COUNT
-};
-
-static void get_mem_info(uint64_t mem[], const char* file) {
-    char buffer[4096];
-    unsigned int numFound = 0;
-
-    int fd = open(file, O_RDONLY);
-
-    if (fd < 0) {
-        printf("Unable to open %s: %s\n", file, strerror(errno));
-        return;
-    }
-
-    const int len = read(fd, buffer, sizeof(buffer) - 1);
-    close(fd);
-
-    if (len < 0) {
-        printf("Empty %s\n", file);
-        return;
-    }
-    buffer[len] = 0;
-
-    static const char* const tags[] = {
-            "MemTotal:",     "MemFree:",    "Buffers:",     "Cached:",   "Shmem:", "Slab:",
-            "SReclaimable:", "SUnreclaim:", "SwapTotal:",   "SwapFree:", "ZRam:",  "Mapped:",
-            "VmallocUsed:",  "PageTables:", "KernelStack:", NULL};
-
-    static const int tagsLen[] = {9, 8, 8, 7, 6, 5, 13, 11, 10, 9, 5, 7, 12, 11, 12, 0};
-
-    memset(mem, 0, sizeof(uint64_t) * 15);
-    char* p = buffer;
-    while (*p && (numFound < (sizeof(tagsLen) / sizeof(tagsLen[0])))) {
-        int i = 0;
-        while (tags[i]) {
-            // std::cout << "tag =" << tags[i] << " p = " << std::string(p, tagsLen[i]) <<
-            // std::endl;
-            if (strncmp(p, tags[i], tagsLen[i]) == 0) {
-                p += tagsLen[i];
-                while (*p == ' ') p++;
-                char* num = p;
-                while (*p >= '0' && *p <= '9') p++;
-                if (*p != 0) {
-                    *p = 0;
-                    p++;
-                }
-                mem[i] = atoll(num);
-                numFound++;
-                break;
-            }
-            i++;
-        }
-        while (*p && *p != '\n') {
-            p++;
-        }
-        if (*p) p++;
-    }
-}
-
-static void BM_ReadMemInfo_old(benchmark::State& state) {
-    std::string meminfo = R"meminfo(MemTotal:        3019740 kB
-MemFree:         1809728 kB
-MemAvailable:    2546560 kB
-Buffers:           54736 kB
-Cached:           776052 kB
-SwapCached:            0 kB
-Active:           445856 kB
-Inactive:         459092 kB
-Active(anon):      78492 kB
-Inactive(anon):     2240 kB
-Active(file):     367364 kB
-Inactive(file):   456852 kB
-Unevictable:        3096 kB
-Mlocked:            3096 kB
-SwapTotal:             0 kB
-SwapFree:              0 kB
-Dirty:                32 kB
-Writeback:             0 kB
-AnonPages:         74988 kB
-Mapped:            62624 kB
-Shmem:              4020 kB
-Slab:              86464 kB
-SReclaimable:      44432 kB
-SUnreclaim:        42032 kB
-KernelStack:        4880 kB
-PageTables:         2900 kB
-NFS_Unstable:          0 kB
-Bounce:                0 kB
-WritebackTmp:          0 kB
-CommitLimit:     1509868 kB
-Committed_AS:      80296 kB
-VmallocTotal:   263061440 kB
-VmallocUsed:           0 kB
-VmallocChunk:          0 kB
-AnonHugePages:      6144 kB
-ShmemHugePages:        0 kB
-ShmemPmdMapped:        0 kB
-CmaTotal:         131072 kB
-CmaFree:          130380 kB
-HugePages_Total:       0
-HugePages_Free:        0
-HugePages_Rsvd:        0
-HugePages_Surp:        0
-Hugepagesize:       2048 kB)meminfo";
-
-    TemporaryFile tf;
-    ::android::base::WriteStringToFd(meminfo, tf.fd);
-
-    uint64_t mem[MEMINFO_COUNT];
-    for (auto _ : state) {
-        get_mem_info(mem, tf.path);
-    }
-}
-BENCHMARK(BM_ReadMemInfo_old);
-
-static void BM_ReadMemInfo_new(benchmark::State& state) {
-    std::string meminfo = R"meminfo(MemTotal:        3019740 kB
-MemFree:         1809728 kB
-MemAvailable:    2546560 kB
-Buffers:           54736 kB
-Cached:           776052 kB
-SwapCached:            0 kB
-Active:           445856 kB
-Inactive:         459092 kB
-Active(anon):      78492 kB
-Inactive(anon):     2240 kB
-Active(file):     367364 kB
-Inactive(file):   456852 kB
-Unevictable:        3096 kB
-Mlocked:            3096 kB
-SwapTotal:             0 kB
-SwapFree:              0 kB
-Dirty:                32 kB
-Writeback:             0 kB
-AnonPages:         74988 kB
-Mapped:            62624 kB
-Shmem:              4020 kB
-Slab:              86464 kB
-SReclaimable:      44432 kB
-SUnreclaim:        42032 kB
-KernelStack:        4880 kB
-PageTables:         2900 kB
-NFS_Unstable:          0 kB
-Bounce:                0 kB
-WritebackTmp:          0 kB
-CommitLimit:     1509868 kB
-Committed_AS:      80296 kB
-VmallocTotal:   263061440 kB
-VmallocUsed:           0 kB
-VmallocChunk:          0 kB
-AnonHugePages:      6144 kB
-ShmemHugePages:        0 kB
-ShmemPmdMapped:        0 kB
-CmaTotal:         131072 kB
-CmaFree:          130380 kB
-HugePages_Total:       0
-HugePages_Free:        0
-HugePages_Rsvd:        0
-HugePages_Surp:        0
-Hugepagesize:       2048 kB)meminfo";
-
-    TemporaryFile tf;
-    android::base::WriteStringToFd(meminfo, tf.fd);
-
-    std::string file = std::string(tf.path);
-    std::vector<uint64_t> mem(MEMINFO_COUNT);
-    const std::vector<std::string> tags = {
-            SysMemInfo::kMemTotal,      SysMemInfo::kMemFree,        SysMemInfo::kMemBuffers,
-            SysMemInfo::kMemCached,     SysMemInfo::kMemShmem,       SysMemInfo::kMemSlab,
-            SysMemInfo::kMemSReclaim,   SysMemInfo::kMemSUnreclaim,  SysMemInfo::kMemSwapTotal,
-            SysMemInfo::kMemSwapFree,   SysMemInfo::kMemMapped,      SysMemInfo::kMemVmallocUsed,
-            SysMemInfo::kMemPageTables, SysMemInfo::kMemKernelStack,
-    };
-
-    SysMemInfo smi;
-    for (auto _ : state) {
-        smi.ReadMemInfo(tags, &mem, file);
-    }
-}
-BENCHMARK(BM_ReadMemInfo_new);
-
-static uint64_t get_zram_mem_used(const std::string& zram_dir) {
-    FILE* f = fopen((zram_dir + "mm_stat").c_str(), "r");
-    if (f) {
-        uint64_t mem_used_total = 0;
-
-        int matched = fscanf(f, "%*d %*d %" SCNu64 " %*d %*d %*d %*d", &mem_used_total);
-        if (matched != 1)
-            fprintf(stderr, "warning: failed to parse %s\n", (zram_dir + "mm_stat").c_str());
-
-        fclose(f);
-        return mem_used_total;
-    }
-
-    f = fopen((zram_dir + "mem_used_total").c_str(), "r");
-    if (f) {
-        uint64_t mem_used_total = 0;
-
-        int matched = fscanf(f, "%" SCNu64, &mem_used_total);
-        if (matched != 1)
-            fprintf(stderr, "warning: failed to parse %s\n", (zram_dir + "mem_used_total").c_str());
-
-        fclose(f);
-        return mem_used_total;
-    }
-
-    return 0;
-}
-
-static void BM_ZramTotal_old(benchmark::State& state) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string zram_mmstat_dir = exec_dir + "/testdata1/";
-    for (auto _ : state) {
-        uint64_t zram_total __attribute__((unused)) = get_zram_mem_used(zram_mmstat_dir) / 1024;
-    }
-}
-BENCHMARK(BM_ZramTotal_old);
-
-static void BM_ZramTotal_new(benchmark::State& state) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string zram_mmstat_dir = exec_dir + "/testdata1/";
-    SysMemInfo smi;
-    for (auto _ : state) {
-        uint64_t zram_total __attribute__((unused)) = smi.mem_zram_kb(zram_mmstat_dir);
-    }
-}
-BENCHMARK(BM_ZramTotal_new);
-
-static void BM_MemInfoWithZram_old(benchmark::State& state) {
-    std::string meminfo = R"meminfo(MemTotal:        3019740 kB
-MemFree:         1809728 kB
-MemAvailable:    2546560 kB
-Buffers:           54736 kB
-Cached:           776052 kB
-SwapCached:            0 kB
-Active:           445856 kB
-Inactive:         459092 kB
-Active(anon):      78492 kB
-Inactive(anon):     2240 kB
-Active(file):     367364 kB
-Inactive(file):   456852 kB
-Unevictable:        3096 kB
-Mlocked:            3096 kB
-SwapTotal:             0 kB
-SwapFree:              0 kB
-Dirty:                32 kB
-Writeback:             0 kB
-AnonPages:         74988 kB
-Mapped:            62624 kB
-Shmem:              4020 kB
-Slab:              86464 kB
-SReclaimable:      44432 kB
-SUnreclaim:        42032 kB
-KernelStack:        4880 kB
-PageTables:         2900 kB
-NFS_Unstable:          0 kB
-Bounce:                0 kB
-WritebackTmp:          0 kB
-CommitLimit:     1509868 kB
-Committed_AS:      80296 kB
-VmallocTotal:   263061440 kB
-VmallocUsed:           0 kB
-VmallocChunk:          0 kB
-AnonHugePages:      6144 kB
-ShmemHugePages:        0 kB
-ShmemPmdMapped:        0 kB
-CmaTotal:         131072 kB
-CmaFree:          130380 kB
-HugePages_Total:       0
-HugePages_Free:        0
-HugePages_Rsvd:        0
-HugePages_Surp:        0
-Hugepagesize:       2048 kB)meminfo";
-
-    TemporaryFile tf;
-    ::android::base::WriteStringToFd(meminfo, tf.fd);
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string zram_mmstat_dir = exec_dir + "/testdata1/";
-    uint64_t mem[MEMINFO_COUNT];
-    for (auto _ : state) {
-        get_mem_info(mem, tf.path);
-        mem[MEMINFO_ZRAM_TOTAL] = get_zram_mem_used("/sys/block/zram0/") / 1024;
-        CHECK_EQ(mem[MEMINFO_KERNEL_STACK], 4880u);
-    }
-}
-BENCHMARK(BM_MemInfoWithZram_old);
-
-static void BM_MemInfoWithZram_new(benchmark::State& state) {
-    std::string meminfo = R"meminfo(MemTotal:        3019740 kB
-MemFree:         1809728 kB
-MemAvailable:    2546560 kB
-Buffers:           54736 kB
-Cached:           776052 kB
-SwapCached:            0 kB
-Active:           445856 kB
-Inactive:         459092 kB
-Active(anon):      78492 kB
-Inactive(anon):     2240 kB
-Active(file):     367364 kB
-Inactive(file):   456852 kB
-Unevictable:        3096 kB
-Mlocked:            3096 kB
-SwapTotal:             0 kB
-SwapFree:              0 kB
-Dirty:                32 kB
-Writeback:             0 kB
-AnonPages:         74988 kB
-Mapped:            62624 kB
-Shmem:              4020 kB
-Slab:              86464 kB
-SReclaimable:      44432 kB
-SUnreclaim:        42032 kB
-KernelStack:        4880 kB
-PageTables:         2900 kB
-NFS_Unstable:          0 kB
-Bounce:                0 kB
-WritebackTmp:          0 kB
-CommitLimit:     1509868 kB
-Committed_AS:      80296 kB
-VmallocTotal:   263061440 kB
-VmallocUsed:           0 kB
-VmallocChunk:          0 kB
-AnonHugePages:      6144 kB
-ShmemHugePages:        0 kB
-ShmemPmdMapped:        0 kB
-CmaTotal:         131072 kB
-CmaFree:          130380 kB
-HugePages_Total:       0
-HugePages_Free:        0
-HugePages_Rsvd:        0
-HugePages_Surp:        0
-Hugepagesize:       2048 kB)meminfo";
-
-    TemporaryFile tf;
-    android::base::WriteStringToFd(meminfo, tf.fd);
-
-    std::string file = std::string(tf.path);
-    std::vector<uint64_t> mem(MEMINFO_COUNT);
-    std::vector<std::string> tags(SysMemInfo::kDefaultSysMemInfoTags);
-    auto it = tags.begin();
-    tags.insert(it + MEMINFO_ZRAM_TOTAL, "Zram:");
-    SysMemInfo smi;
-
-    for (auto _ : state) {
-        smi.ReadMemInfo(tags, &mem, file);
-        CHECK_EQ(mem[MEMINFO_KERNEL_STACK], 4880u);
-    }
-}
-BENCHMARK(BM_MemInfoWithZram_new);
-
-// Current implementation is in frameworks/base/core/jni/android_os_Debug.cpp.
-// That implementation is still buggy and it skips over vmalloc allocated memory by kernel modules.
-// This is the *fixed* version of the same implementation intended for benchmarking against the new
-// one.
-static uint64_t get_allocated_vmalloc_memory(const std::string& vm_file) {
-    char line[1024];
-
-    uint64_t vmalloc_allocated_size = 0;
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(vm_file.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        return 0;
-    }
-
-    while (true) {
-        if (fgets(line, 1024, fp.get()) == NULL) {
-            break;
-        }
-
-        // check to see if there are pages mapped in vmalloc area
-        if (!strstr(line, "pages=")) {
-            continue;
-        }
-
-        long nr_pages;
-        if (sscanf(line, "%*x-%*x %*ld %*s pages=%ld", &nr_pages) == 1) {
-            vmalloc_allocated_size += (nr_pages * getpagesize());
-        } else if (sscanf(line, "%*x-%*x %*ld %*s %*s pages=%ld", &nr_pages) == 1) {
-            // The second case is for kernel modules. If allocation comes from the module,
-            // kernel puts an extra string containing the module name before "pages=" in
-            // the line.
-            //    See: https://elixir.bootlin.com/linux/latest/source/kernel/kallsyms.c#L373
-            vmalloc_allocated_size += (nr_pages * getpagesize());
-        }
-    }
-    return vmalloc_allocated_size;
-}
-
-static void BM_VmallocInfo_old_fixed(benchmark::State& state) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string vmallocinfo =
-            ::android::base::StringPrintf("%s/testdata1/vmallocinfo", exec_dir.c_str());
-    for (auto _ : state) {
-        CHECK_EQ(get_allocated_vmalloc_memory(vmallocinfo), 29884416);
-    }
-}
-BENCHMARK(BM_VmallocInfo_old_fixed);
-
-static void BM_VmallocInfo_new(benchmark::State& state) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string vmallocinfo =
-            ::android::base::StringPrintf("%s/testdata1/vmallocinfo", exec_dir.c_str());
-    for (auto _ : state) {
-        CHECK_EQ(::android::meminfo::ReadVmallocInfo(vmallocinfo), 29884416);
-    }
-}
-BENCHMARK(BM_VmallocInfo_new);
-
-// This implementation is picked up as-is from frameworks/base/core/jni/android_os_Debug.cpp
-// and only slightly modified to use std:unique_ptr.
-static bool get_smaps_rollup(const std::string path, MemUsage* rollup) {
-    char lineBuffer[1024];
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
-    if (fp != nullptr) {
-        char* line;
-        while (true) {
-            if (fgets(lineBuffer, sizeof(lineBuffer), fp.get()) == NULL) {
-                break;
-            }
-            line = lineBuffer;
-
-            switch (line[0]) {
-                case 'P':
-                    if (strncmp(line, "Pss:", 4) == 0) {
-                        char* c = line + 4;
-                        while (*c != 0 && (*c < '0' || *c > '9')) {
-                            c++;
-                        }
-                        rollup->pss += atoi(c);
-                    } else if (strncmp(line, "Private_Clean:", 14) == 0 ||
-                               strncmp(line, "Private_Dirty:", 14) == 0) {
-                        char* c = line + 14;
-                        while (*c != 0 && (*c < '0' || *c > '9')) {
-                            c++;
-                        }
-                        rollup->uss += atoi(c);
-                    }
-                    break;
-                case 'R':
-                    if (strncmp(line, "Rss:", 4) == 0) {
-                        char* c = line + 4;
-                        while (*c != 0 && (*c < '0' || *c > '9')) {
-                            c++;
-                        }
-                        rollup->rss += atoi(c);
-                    }
-                    break;
-                case 'S':
-                    if (strncmp(line, "SwapPss:", 8) == 0) {
-                        char* c = line + 8;
-                        long lSwapPss;
-                        while (*c != 0 && (*c < '0' || *c > '9')) {
-                            c++;
-                        }
-                        lSwapPss = atoi(c);
-                        rollup->swap_pss += lSwapPss;
-                    }
-                    break;
-            }
-        }
-    } else {
-        return false;
-    }
-
-    return true;
-}
-
-static void BM_SmapsRollup_old(benchmark::State& state) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string path = ::android::base::StringPrintf("%s/testdata1/smaps", exec_dir.c_str());
-    for (auto _ : state) {
-        MemUsage stats;
-        CHECK_EQ(get_smaps_rollup(path, &stats), true);
-        CHECK_EQ(stats.pss, 108384);
-    }
-}
-BENCHMARK(BM_SmapsRollup_old);
-
-static void BM_SmapsRollup_new(benchmark::State& state) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string path = ::android::base::StringPrintf("%s/testdata1/smaps", exec_dir.c_str());
-    for (auto _ : state) {
-        MemUsage stats;
-        CHECK_EQ(SmapsOrRollupFromFile(path, &stats), true);
-        CHECK_EQ(stats.pss, 108384);
-    }
-}
-BENCHMARK(BM_SmapsRollup_new);
-
-BENCHMARK_MAIN();
diff --git a/libmeminfo/libmeminfo_test.cpp b/libmeminfo/libmeminfo_test.cpp
deleted file mode 100644
index 5451ca3..0000000
--- a/libmeminfo/libmeminfo_test.cpp
+++ /dev/null
@@ -1,651 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <gtest/gtest.h>
-
-#include <string>
-#include <vector>
-
-#include <meminfo/pageacct.h>
-#include <meminfo/procmeminfo.h>
-#include <meminfo/sysmeminfo.h>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-
-using namespace std;
-using namespace android::meminfo;
-
-pid_t pid = -1;
-
-TEST(ProcMemInfo, TestWorkingTestReset) {
-    // Expect reset to succeed
-    EXPECT_TRUE(ProcMemInfo::ResetWorkingSet(pid));
-}
-
-TEST(ProcMemInfo, UsageEmpty) {
-    // If we created the object for getting working set,
-    // the usage must be empty
-    ProcMemInfo proc_mem(pid, true);
-    const MemUsage& usage = proc_mem.Usage();
-    EXPECT_EQ(usage.rss, 0);
-    EXPECT_EQ(usage.vss, 0);
-    EXPECT_EQ(usage.pss, 0);
-    EXPECT_EQ(usage.uss, 0);
-    EXPECT_EQ(usage.swap, 0);
-}
-
-TEST(ProcMemInfo, MapsNotEmpty) {
-    // Make sure the process maps are never empty
-    ProcMemInfo proc_mem(pid);
-    const std::vector<Vma>& maps = proc_mem.Maps();
-    EXPECT_FALSE(maps.empty());
-}
-
-TEST(ProcMemInfo, WssEmpty) {
-    // If we created the object for getting usage,
-    // the working set must be empty
-    ProcMemInfo proc_mem(pid, false);
-    const MemUsage& wss = proc_mem.Wss();
-    EXPECT_EQ(wss.rss, 0);
-    EXPECT_EQ(wss.vss, 0);
-    EXPECT_EQ(wss.pss, 0);
-    EXPECT_EQ(wss.uss, 0);
-    EXPECT_EQ(wss.swap, 0);
-}
-
-TEST(ProcMemInfo, SwapOffsetsEmpty) {
-    // If we created the object for getting working set,
-    // the swap offsets must be empty
-    ProcMemInfo proc_mem(pid, true);
-    const std::vector<uint16_t>& swap_offsets = proc_mem.SwapOffsets();
-    EXPECT_EQ(swap_offsets.size(), 0);
-}
-
-TEST(ProcMemInfo, IsSmapsSupportedTest) {
-    // Get any pid and check if /proc/<pid>/smaps_rollup exists using the API.
-    // The API must return the appropriate value regardless of the after it succeeds
-    // once.
-    std::string path = ::android::base::StringPrintf("/proc/%d/smaps_rollup", pid);
-    bool supported = IsSmapsRollupSupported(pid);
-    EXPECT_EQ(!access(path.c_str(), F_OK | R_OK), supported);
-    // Second call must return what the first one returned regardless of the pid parameter.
-    // So, deliberately pass invalid pid.
-    EXPECT_EQ(supported, IsSmapsRollupSupported(-1));
-}
-
-TEST(ProcMemInfo, SmapsOrRollupTest) {
-    // Make sure we can parse 'smaps_rollup' correctly
-    std::string rollup =
-            R"rollup(12c00000-7fe859e000 ---p 00000000 00:00 0                                [rollup]
-Rss:              331908 kB
-Pss:              202052 kB
-Shared_Clean:     158492 kB
-Shared_Dirty:      18928 kB
-Private_Clean:     90472 kB
-Private_Dirty:     64016 kB
-Referenced:       318700 kB
-Anonymous:         81984 kB
-AnonHugePages:         0 kB
-Shared_Hugetlb:        0 kB
-Private_Hugetlb:       0 kB
-Swap:               5344 kB
-SwapPss:             442 kB
-Locked:          1523537 kB)rollup";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(rollup, tf.fd));
-
-    MemUsage stats;
-    ASSERT_EQ(SmapsOrRollupFromFile(tf.path, &stats), true);
-    EXPECT_EQ(stats.rss, 331908);
-    EXPECT_EQ(stats.pss, 202052);
-    EXPECT_EQ(stats.uss, 154488);
-    EXPECT_EQ(stats.private_clean, 90472);
-    EXPECT_EQ(stats.private_dirty, 64016);
-    EXPECT_EQ(stats.swap_pss, 442);
-}
-
-TEST(ProcMemInfo, SmapsOrRollupSmapsTest) {
-    // Make sure /proc/<pid>/smaps is parsed correctly
-    std::string smaps =
-            R"smaps(12c00000-13440000 rw-p 00000000 00:00 0                                  [anon:dalvik-main space (region space)]
-Name:           [anon:dalvik-main space (region space)]
-Size:               8448 kB
-KernelPageSize:        4 kB
-MMUPageSize:           4 kB
-Rss:                2652 kB
-Pss:                2652 kB
-Shared_Clean:        840 kB
-Shared_Dirty:         40 kB
-Private_Clean:        84 kB
-Private_Dirty:      2652 kB
-Referenced:         2652 kB
-Anonymous:          2652 kB
-AnonHugePages:         0 kB
-ShmemPmdMapped:        0 kB
-Shared_Hugetlb:        0 kB
-Private_Hugetlb:       0 kB
-Swap:                102 kB
-SwapPss:              70 kB
-Locked:             2652 kB
-VmFlags: rd wr mr mw me ac 
-)smaps";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(smaps, tf.fd));
-
-    MemUsage stats;
-    ASSERT_EQ(SmapsOrRollupFromFile(tf.path, &stats), true);
-    EXPECT_EQ(stats.rss, 2652);
-    EXPECT_EQ(stats.pss, 2652);
-    EXPECT_EQ(stats.uss, 2736);
-    EXPECT_EQ(stats.private_clean, 84);
-    EXPECT_EQ(stats.private_dirty, 2652);
-    EXPECT_EQ(stats.swap_pss, 70);
-}
-
-TEST(ProcMemInfo, SmapsOrRollupPssRollupTest) {
-    // Make sure /proc/<pid>/smaps is parsed correctly
-    // to get the PSS
-    std::string smaps =
-            R"smaps(12c00000-13440000 rw-p 00000000 00:00 0                                  [anon:dalvik-main space (region space)]
-Name:           [anon:dalvik-main space (region space)]
-Size:               8448 kB
-KernelPageSize:        4 kB
-MMUPageSize:           4 kB
-Rss:                2652 kB
-Pss:                2652 kB
-Shared_Clean:        840 kB
-Shared_Dirty:         40 kB
-Private_Clean:        84 kB
-Private_Dirty:      2652 kB
-Referenced:         2652 kB
-Anonymous:          2652 kB
-AnonHugePages:         0 kB
-ShmemPmdMapped:        0 kB
-Shared_Hugetlb:        0 kB
-Private_Hugetlb:       0 kB
-Swap:                102 kB
-SwapPss:              70 kB
-Locked:             2652 kB
-VmFlags: rd wr mr mw me ac 
-)smaps";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(smaps, tf.fd));
-
-    uint64_t pss;
-    ASSERT_EQ(SmapsOrRollupPssFromFile(tf.path, &pss), true);
-    EXPECT_EQ(pss, 2652);
-}
-
-TEST(ProcMemInfo, SmapsOrRollupPssSmapsTest) {
-    // Correctly parse smaps file to gather pss
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string path = ::android::base::StringPrintf("%s/testdata1/smaps_short", exec_dir.c_str());
-
-    uint64_t pss;
-    ASSERT_EQ(SmapsOrRollupPssFromFile(path, &pss), true);
-    EXPECT_EQ(pss, 19119);
-}
-
-TEST(ProcMemInfo, ForEachVmaFromFileTest) {
-    // Parse smaps file correctly to make callbacks for each virtual memory area (vma)
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string path = ::android::base::StringPrintf("%s/testdata1/smaps_short", exec_dir.c_str());
-    ProcMemInfo proc_mem(pid);
-
-    std::vector<Vma> vmas;
-    auto collect_vmas = [&](const Vma& v) { vmas.push_back(v); };
-    ASSERT_TRUE(ForEachVmaFromFile(path, collect_vmas));
-
-    // We should get a total of 6 vmas
-    ASSERT_EQ(vmas.size(), 6);
-
-    // Expect values to be equal to what we have in testdata1/smaps_short
-    // Check for sizes first
-    ASSERT_EQ(vmas[0].usage.vss, 32768);
-    EXPECT_EQ(vmas[1].usage.vss, 11204);
-    EXPECT_EQ(vmas[2].usage.vss, 16896);
-    EXPECT_EQ(vmas[3].usage.vss, 260);
-    EXPECT_EQ(vmas[4].usage.vss, 6060);
-    EXPECT_EQ(vmas[5].usage.vss, 4);
-
-    // Check for names
-    EXPECT_EQ(vmas[0].name, "[anon:dalvik-zygote-jit-code-cache]");
-    EXPECT_EQ(vmas[1].name, "/system/framework/x86_64/boot-framework.art");
-    EXPECT_EQ(vmas[2].name, "[anon:libc_malloc]");
-    EXPECT_EQ(vmas[3].name, "/system/priv-app/SettingsProvider/oat/x86_64/SettingsProvider.odex");
-    EXPECT_EQ(vmas[4].name, "/system/lib64/libhwui.so");
-    EXPECT_EQ(vmas[5].name, "[vsyscall]");
-
-    EXPECT_EQ(vmas[0].usage.rss, 2048);
-    EXPECT_EQ(vmas[1].usage.rss, 11188);
-    EXPECT_EQ(vmas[2].usage.rss, 15272);
-    EXPECT_EQ(vmas[3].usage.rss, 260);
-    EXPECT_EQ(vmas[4].usage.rss, 4132);
-    EXPECT_EQ(vmas[5].usage.rss, 0);
-
-    EXPECT_EQ(vmas[0].usage.pss, 113);
-    EXPECT_EQ(vmas[1].usage.pss, 2200);
-    EXPECT_EQ(vmas[2].usage.pss, 15272);
-    EXPECT_EQ(vmas[3].usage.pss, 260);
-    EXPECT_EQ(vmas[4].usage.pss, 1274);
-    EXPECT_EQ(vmas[5].usage.pss, 0);
-
-    EXPECT_EQ(vmas[0].usage.uss, 0);
-    EXPECT_EQ(vmas[1].usage.uss, 1660);
-    EXPECT_EQ(vmas[2].usage.uss, 15272);
-    EXPECT_EQ(vmas[3].usage.uss, 260);
-    EXPECT_EQ(vmas[4].usage.uss, 0);
-    EXPECT_EQ(vmas[5].usage.uss, 0);
-
-    EXPECT_EQ(vmas[0].usage.private_clean, 0);
-    EXPECT_EQ(vmas[1].usage.private_clean, 0);
-    EXPECT_EQ(vmas[2].usage.private_clean, 0);
-    EXPECT_EQ(vmas[3].usage.private_clean, 260);
-    EXPECT_EQ(vmas[4].usage.private_clean, 0);
-    EXPECT_EQ(vmas[5].usage.private_clean, 0);
-
-    EXPECT_EQ(vmas[0].usage.private_dirty, 0);
-    EXPECT_EQ(vmas[1].usage.private_dirty, 1660);
-    EXPECT_EQ(vmas[2].usage.private_dirty, 15272);
-    EXPECT_EQ(vmas[3].usage.private_dirty, 0);
-    EXPECT_EQ(vmas[4].usage.private_dirty, 0);
-    EXPECT_EQ(vmas[5].usage.private_dirty, 0);
-
-    EXPECT_EQ(vmas[0].usage.shared_clean, 0);
-    EXPECT_EQ(vmas[1].usage.shared_clean, 80);
-    EXPECT_EQ(vmas[2].usage.shared_clean, 0);
-    EXPECT_EQ(vmas[3].usage.shared_clean, 0);
-    EXPECT_EQ(vmas[4].usage.shared_clean, 4132);
-    EXPECT_EQ(vmas[5].usage.shared_clean, 0);
-
-    EXPECT_EQ(vmas[0].usage.shared_dirty, 2048);
-    EXPECT_EQ(vmas[1].usage.shared_dirty, 9448);
-    EXPECT_EQ(vmas[2].usage.shared_dirty, 0);
-    EXPECT_EQ(vmas[3].usage.shared_dirty, 0);
-    EXPECT_EQ(vmas[4].usage.shared_dirty, 0);
-    EXPECT_EQ(vmas[5].usage.shared_dirty, 0);
-
-    EXPECT_EQ(vmas[0].usage.swap, 0);
-    EXPECT_EQ(vmas[1].usage.swap, 0);
-    EXPECT_EQ(vmas[2].usage.swap, 0);
-    EXPECT_EQ(vmas[3].usage.swap, 0);
-    EXPECT_EQ(vmas[4].usage.swap, 0);
-    EXPECT_EQ(vmas[5].usage.swap, 0);
-
-    EXPECT_EQ(vmas[0].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[1].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[2].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[3].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[4].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[5].usage.swap_pss, 0);
-}
-
-TEST(ProcMemInfo, SmapsReturnTest) {
-    // Make sure Smaps() is never empty for any process
-    ProcMemInfo proc_mem(pid);
-    auto vmas = proc_mem.Smaps();
-    EXPECT_FALSE(vmas.empty());
-}
-
-TEST(ProcMemInfo, SmapsTest) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-    std::string path = ::android::base::StringPrintf("%s/testdata1/smaps_short", exec_dir.c_str());
-    ProcMemInfo proc_mem(pid);
-    auto vmas = proc_mem.Smaps(path);
-
-    ASSERT_FALSE(vmas.empty());
-    // We should get a total of 6 vmas
-    ASSERT_EQ(vmas.size(), 6);
-
-    // Expect values to be equal to what we have in testdata1/smaps_short
-    // Check for sizes first
-    ASSERT_EQ(vmas[0].usage.vss, 32768);
-    EXPECT_EQ(vmas[1].usage.vss, 11204);
-    EXPECT_EQ(vmas[2].usage.vss, 16896);
-    EXPECT_EQ(vmas[3].usage.vss, 260);
-    EXPECT_EQ(vmas[4].usage.vss, 6060);
-    EXPECT_EQ(vmas[5].usage.vss, 4);
-
-    // Check for names
-    EXPECT_EQ(vmas[0].name, "[anon:dalvik-zygote-jit-code-cache]");
-    EXPECT_EQ(vmas[1].name, "/system/framework/x86_64/boot-framework.art");
-    EXPECT_EQ(vmas[2].name, "[anon:libc_malloc]");
-    EXPECT_EQ(vmas[3].name, "/system/priv-app/SettingsProvider/oat/x86_64/SettingsProvider.odex");
-    EXPECT_EQ(vmas[4].name, "/system/lib64/libhwui.so");
-    EXPECT_EQ(vmas[5].name, "[vsyscall]");
-
-    EXPECT_EQ(vmas[0].usage.rss, 2048);
-    EXPECT_EQ(vmas[1].usage.rss, 11188);
-    EXPECT_EQ(vmas[2].usage.rss, 15272);
-    EXPECT_EQ(vmas[3].usage.rss, 260);
-    EXPECT_EQ(vmas[4].usage.rss, 4132);
-    EXPECT_EQ(vmas[5].usage.rss, 0);
-
-    EXPECT_EQ(vmas[0].usage.pss, 113);
-    EXPECT_EQ(vmas[1].usage.pss, 2200);
-    EXPECT_EQ(vmas[2].usage.pss, 15272);
-    EXPECT_EQ(vmas[3].usage.pss, 260);
-    EXPECT_EQ(vmas[4].usage.pss, 1274);
-    EXPECT_EQ(vmas[5].usage.pss, 0);
-
-    EXPECT_EQ(vmas[0].usage.uss, 0);
-    EXPECT_EQ(vmas[1].usage.uss, 1660);
-    EXPECT_EQ(vmas[2].usage.uss, 15272);
-    EXPECT_EQ(vmas[3].usage.uss, 260);
-    EXPECT_EQ(vmas[4].usage.uss, 0);
-    EXPECT_EQ(vmas[5].usage.uss, 0);
-
-    EXPECT_EQ(vmas[0].usage.private_clean, 0);
-    EXPECT_EQ(vmas[1].usage.private_clean, 0);
-    EXPECT_EQ(vmas[2].usage.private_clean, 0);
-    EXPECT_EQ(vmas[3].usage.private_clean, 260);
-    EXPECT_EQ(vmas[4].usage.private_clean, 0);
-    EXPECT_EQ(vmas[5].usage.private_clean, 0);
-
-    EXPECT_EQ(vmas[0].usage.private_dirty, 0);
-    EXPECT_EQ(vmas[1].usage.private_dirty, 1660);
-    EXPECT_EQ(vmas[2].usage.private_dirty, 15272);
-    EXPECT_EQ(vmas[3].usage.private_dirty, 0);
-    EXPECT_EQ(vmas[4].usage.private_dirty, 0);
-    EXPECT_EQ(vmas[5].usage.private_dirty, 0);
-
-    EXPECT_EQ(vmas[0].usage.shared_clean, 0);
-    EXPECT_EQ(vmas[1].usage.shared_clean, 80);
-    EXPECT_EQ(vmas[2].usage.shared_clean, 0);
-    EXPECT_EQ(vmas[3].usage.shared_clean, 0);
-    EXPECT_EQ(vmas[4].usage.shared_clean, 4132);
-    EXPECT_EQ(vmas[5].usage.shared_clean, 0);
-
-    EXPECT_EQ(vmas[0].usage.shared_dirty, 2048);
-    EXPECT_EQ(vmas[1].usage.shared_dirty, 9448);
-    EXPECT_EQ(vmas[2].usage.shared_dirty, 0);
-    EXPECT_EQ(vmas[3].usage.shared_dirty, 0);
-    EXPECT_EQ(vmas[4].usage.shared_dirty, 0);
-    EXPECT_EQ(vmas[5].usage.shared_dirty, 0);
-
-    EXPECT_EQ(vmas[0].usage.swap, 0);
-    EXPECT_EQ(vmas[1].usage.swap, 0);
-    EXPECT_EQ(vmas[2].usage.swap, 0);
-    EXPECT_EQ(vmas[3].usage.swap, 0);
-    EXPECT_EQ(vmas[4].usage.swap, 0);
-    EXPECT_EQ(vmas[5].usage.swap, 0);
-
-    EXPECT_EQ(vmas[0].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[1].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[2].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[3].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[4].usage.swap_pss, 0);
-    EXPECT_EQ(vmas[5].usage.swap_pss, 0);
-}
-
-TEST(SysMemInfo, TestSysMemInfoFile) {
-    std::string meminfo = R"meminfo(MemTotal:        3019740 kB
-MemFree:         1809728 kB
-MemAvailable:    2546560 kB
-Buffers:           54736 kB
-Cached:           776052 kB
-SwapCached:            0 kB
-Active:           445856 kB
-Inactive:         459092 kB
-Active(anon):      78492 kB
-Inactive(anon):     2240 kB
-Active(file):     367364 kB
-Inactive(file):   456852 kB
-Unevictable:        3096 kB
-Mlocked:            3096 kB
-SwapTotal:         32768 kB
-SwapFree:           4096 kB
-Dirty:                32 kB
-Writeback:             0 kB
-AnonPages:         74988 kB
-Mapped:            62624 kB
-Shmem:              4020 kB
-Slab:              86464 kB
-SReclaimable:      44432 kB
-SUnreclaim:        42032 kB
-KernelStack:        4880 kB
-PageTables:         2900 kB
-NFS_Unstable:          0 kB
-Bounce:                0 kB
-WritebackTmp:          0 kB
-CommitLimit:     1509868 kB
-Committed_AS:      80296 kB
-VmallocTotal:   263061440 kB
-VmallocUsed:       65536 kB
-VmallocChunk:          0 kB
-AnonHugePages:      6144 kB
-ShmemHugePages:        0 kB
-ShmemPmdMapped:        0 kB
-CmaTotal:         131072 kB
-CmaFree:          130380 kB
-HugePages_Total:       0
-HugePages_Free:        0
-HugePages_Rsvd:        0
-HugePages_Surp:        0
-Hugepagesize:       2048 kB)meminfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(meminfo, tf.fd));
-
-    SysMemInfo mi;
-    ASSERT_TRUE(mi.ReadMemInfo(tf.path));
-    EXPECT_EQ(mi.mem_total_kb(), 3019740);
-    EXPECT_EQ(mi.mem_free_kb(), 1809728);
-    EXPECT_EQ(mi.mem_buffers_kb(), 54736);
-    EXPECT_EQ(mi.mem_cached_kb(), 776052);
-    EXPECT_EQ(mi.mem_shmem_kb(), 4020);
-    EXPECT_EQ(mi.mem_slab_kb(), 86464);
-    EXPECT_EQ(mi.mem_slab_reclaimable_kb(), 44432);
-    EXPECT_EQ(mi.mem_slab_unreclaimable_kb(), 42032);
-    EXPECT_EQ(mi.mem_swap_kb(), 32768);
-    EXPECT_EQ(mi.mem_swap_free_kb(), 4096);
-    EXPECT_EQ(mi.mem_mapped_kb(), 62624);
-    EXPECT_EQ(mi.mem_vmalloc_used_kb(), 65536);
-    EXPECT_EQ(mi.mem_page_tables_kb(), 2900);
-    EXPECT_EQ(mi.mem_kernel_stack_kb(), 4880);
-}
-
-TEST(SysMemInfo, TestEmptyFile) {
-    TemporaryFile tf;
-    std::string empty_string = "";
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(empty_string, tf.fd));
-
-    SysMemInfo mi;
-    EXPECT_TRUE(mi.ReadMemInfo(tf.path));
-    EXPECT_EQ(mi.mem_total_kb(), 0);
-}
-
-TEST(SysMemInfo, TestZramTotal) {
-    std::string exec_dir = ::android::base::GetExecutableDirectory();
-
-    SysMemInfo mi;
-    std::string zram_mmstat_dir = exec_dir + "/testdata1/";
-    EXPECT_EQ(mi.mem_zram_kb(zram_mmstat_dir), 30504);
-
-    std::string zram_memused_dir = exec_dir + "/testdata2/";
-    EXPECT_EQ(mi.mem_zram_kb(zram_memused_dir), 30504);
-}
-
-enum {
-    MEMINFO_TOTAL,
-    MEMINFO_FREE,
-    MEMINFO_BUFFERS,
-    MEMINFO_CACHED,
-    MEMINFO_SHMEM,
-    MEMINFO_SLAB,
-    MEMINFO_SLAB_RECLAIMABLE,
-    MEMINFO_SLAB_UNRECLAIMABLE,
-    MEMINFO_SWAP_TOTAL,
-    MEMINFO_SWAP_FREE,
-    MEMINFO_ZRAM_TOTAL,
-    MEMINFO_MAPPED,
-    MEMINFO_VMALLOC_USED,
-    MEMINFO_PAGE_TABLES,
-    MEMINFO_KERNEL_STACK,
-    MEMINFO_COUNT
-};
-
-TEST(SysMemInfo, TestZramWithTags) {
-    std::string meminfo = R"meminfo(MemTotal:        3019740 kB
-MemFree:         1809728 kB
-MemAvailable:    2546560 kB
-Buffers:           54736 kB
-Cached:           776052 kB
-SwapCached:            0 kB
-Active:           445856 kB
-Inactive:         459092 kB
-Active(anon):      78492 kB
-Inactive(anon):     2240 kB
-Active(file):     367364 kB
-Inactive(file):   456852 kB
-Unevictable:        3096 kB
-Mlocked:            3096 kB
-SwapTotal:         32768 kB
-SwapFree:           4096 kB
-Dirty:                32 kB
-Writeback:             0 kB
-AnonPages:         74988 kB
-Mapped:            62624 kB
-Shmem:              4020 kB
-Slab:              86464 kB
-SReclaimable:      44432 kB
-SUnreclaim:        42032 kB
-KernelStack:        4880 kB
-PageTables:         2900 kB
-NFS_Unstable:          0 kB
-Bounce:                0 kB
-WritebackTmp:          0 kB
-CommitLimit:     1509868 kB
-Committed_AS:      80296 kB
-VmallocTotal:   263061440 kB
-VmallocUsed:       65536 kB
-VmallocChunk:          0 kB
-AnonHugePages:      6144 kB
-ShmemHugePages:        0 kB
-ShmemPmdMapped:        0 kB
-CmaTotal:         131072 kB
-CmaFree:          130380 kB
-HugePages_Total:       0
-HugePages_Free:        0
-HugePages_Rsvd:        0
-HugePages_Surp:        0
-Hugepagesize:       2048 kB)meminfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(meminfo, tf.fd));
-    std::string file = std::string(tf.path);
-    std::vector<uint64_t> mem(MEMINFO_COUNT);
-    std::vector<std::string> tags(SysMemInfo::kDefaultSysMemInfoTags);
-    auto it = tags.begin();
-    tags.insert(it + MEMINFO_ZRAM_TOTAL, "Zram:");
-    SysMemInfo mi;
-
-    // Read system memory info
-    EXPECT_TRUE(mi.ReadMemInfo(tags, &mem, file));
-
-    EXPECT_EQ(mem[MEMINFO_TOTAL], 3019740);
-    EXPECT_EQ(mem[MEMINFO_FREE], 1809728);
-    EXPECT_EQ(mem[MEMINFO_BUFFERS], 54736);
-    EXPECT_EQ(mem[MEMINFO_CACHED], 776052);
-    EXPECT_EQ(mem[MEMINFO_SHMEM], 4020);
-    EXPECT_EQ(mem[MEMINFO_SLAB], 86464);
-    EXPECT_EQ(mem[MEMINFO_SLAB_RECLAIMABLE], 44432);
-    EXPECT_EQ(mem[MEMINFO_SLAB_UNRECLAIMABLE], 42032);
-    EXPECT_EQ(mem[MEMINFO_SWAP_TOTAL], 32768);
-    EXPECT_EQ(mem[MEMINFO_SWAP_FREE], 4096);
-    EXPECT_EQ(mem[MEMINFO_MAPPED], 62624);
-    EXPECT_EQ(mem[MEMINFO_VMALLOC_USED], 65536);
-    EXPECT_EQ(mem[MEMINFO_PAGE_TABLES], 2900);
-    EXPECT_EQ(mem[MEMINFO_KERNEL_STACK], 4880);
-}
-
-TEST(SysMemInfo, TestVmallocInfoNoMemory) {
-    std::string vmallocinfo =
-            R"vmallocinfo(0x0000000000000000-0x0000000000000000   69632 of_iomap+0x78/0xb0 phys=17a00000 ioremap
-0x0000000000000000-0x0000000000000000    8192 of_iomap+0x78/0xb0 phys=b220000 ioremap
-0x0000000000000000-0x0000000000000000    8192 of_iomap+0x78/0xb0 phys=17c90000 ioremap
-0x0000000000000000-0x0000000000000000    8192 of_iomap+0x78/0xb0 phys=17ca0000 ioremap)vmallocinfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(vmallocinfo, tf.fd));
-    std::string file = std::string(tf.path);
-
-    EXPECT_EQ(ReadVmallocInfo(file), 0);
-}
-
-TEST(SysMemInfo, TestVmallocInfoKernel) {
-    std::string vmallocinfo =
-            R"vmallocinfo(0x0000000000000000-0x0000000000000000    8192 drm_property_create_blob+0x44/0xec pages=1 vmalloc)vmallocinfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(vmallocinfo, tf.fd));
-    std::string file = std::string(tf.path);
-
-    EXPECT_EQ(ReadVmallocInfo(file), getpagesize());
-}
-
-TEST(SysMemInfo, TestVmallocInfoModule) {
-    std::string vmallocinfo =
-            R"vmallocinfo(0x0000000000000000-0x0000000000000000   28672 pktlog_alloc_buf+0xc4/0x15c [wlan] pages=6 vmalloc)vmallocinfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(vmallocinfo, tf.fd));
-    std::string file = std::string(tf.path);
-
-    EXPECT_EQ(ReadVmallocInfo(file), 6 * getpagesize());
-}
-
-TEST(SysMemInfo, TestVmallocInfoAll) {
-    std::string vmallocinfo =
-            R"vmallocinfo(0x0000000000000000-0x0000000000000000   69632 of_iomap+0x78/0xb0 phys=17a00000 ioremap
-0x0000000000000000-0x0000000000000000    8192 of_iomap+0x78/0xb0 phys=b220000 ioremap
-0x0000000000000000-0x0000000000000000    8192 of_iomap+0x78/0xb0 phys=17c90000 ioremap
-0x0000000000000000-0x0000000000000000    8192 of_iomap+0x78/0xb0 phys=17ca0000 ioremap
-0x0000000000000000-0x0000000000000000    8192 drm_property_create_blob+0x44/0xec pages=1 vmalloc
-0x0000000000000000-0x0000000000000000   28672 pktlog_alloc_buf+0xc4/0x15c [wlan] pages=6 vmalloc)vmallocinfo";
-
-    TemporaryFile tf;
-    ASSERT_TRUE(tf.fd != -1);
-    ASSERT_TRUE(::android::base::WriteStringToFd(vmallocinfo, tf.fd));
-    std::string file = std::string(tf.path);
-
-    EXPECT_EQ(ReadVmallocInfo(file), 7 * getpagesize());
-}
-
-int main(int argc, char** argv) {
-    ::testing::InitGoogleTest(&argc, argv);
-    ::android::base::InitLogging(argv, android::base::StderrLogger);
-    pid = getpid();
-    return RUN_ALL_TESTS();
-}
diff --git a/libmeminfo/meminfo_private.h b/libmeminfo/meminfo_private.h
deleted file mode 100644
index df5699c..0000000
--- a/libmeminfo/meminfo_private.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <meminfo/meminfo.h>
-#include <meminfo/pageacct.h>
-#include <meminfo/procmeminfo.h>
-#include <meminfo/sysmeminfo.h>
-
-// Macros to do per-page flag manipulation
-#define _BITS(x, offset, bits) (((x) >> (offset)) & ((1LL << (bits)) - 1))
-#define PAGE_PRESENT(x) (_BITS(x, 63, 1))
-#define PAGE_SWAPPED(x) (_BITS(x, 62, 1))
-#define PAGE_SHIFT(x) (_BITS(x, 55, 6))
-#define PAGE_PFN(x) (_BITS(x, 0, 55))
-#define PAGE_SWAP_OFFSET(x) (_BITS(x, 5, 50))
-#define PAGE_SWAP_TYPE(x) (_BITS(x, 0, 5))
diff --git a/libmeminfo/pageacct.cpp b/libmeminfo/pageacct.cpp
deleted file mode 100644
index cb17af8..0000000
--- a/libmeminfo/pageacct.cpp
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <android-base/logging.h>
-#include <android-base/unique_fd.h>
-
-#include "meminfo_private.h"
-
-using unique_fd = ::android::base::unique_fd;
-
-namespace android {
-namespace meminfo {
-
-static inline off64_t pfn_to_idle_bitmap_offset(uint64_t pfn) {
-    return static_cast<off64_t>((pfn >> 6) << 3);
-}
-
-uint64_t pagesize(void) {
-    static uint64_t pagesize = sysconf(_SC_PAGE_SIZE);
-    return pagesize;
-}
-
-bool PageAcct::InitPageAcct(bool pageidle_enable) {
-    if (pageidle_enable && !PageAcct::KernelHasPageIdle()) {
-        LOG(ERROR) << "Idle page tracking is not supported by the kernel";
-        return false;
-    }
-
-    if (kpagecount_fd_ < 0) {
-        unique_fd count_fd(TEMP_FAILURE_RETRY(open("/proc/kpagecount", O_RDONLY | O_CLOEXEC)));
-        if (count_fd < 0) {
-            PLOG(ERROR) << "Failed to open /proc/kpagecount";
-            return false;
-        }
-        kpagecount_fd_ = std::move(count_fd);
-    }
-
-    if (kpageflags_fd_ < 0) {
-        unique_fd flags_fd(TEMP_FAILURE_RETRY(open("/proc/kpageflags", O_RDONLY | O_CLOEXEC)));
-        if (flags_fd < 0) {
-            PLOG(ERROR) << "Failed to open /proc/kpageflags";
-            return false;
-        }
-        kpageflags_fd_ = std::move(flags_fd);
-    }
-
-    if (pageidle_enable && pageidle_fd_ < 0) {
-        unique_fd idle_fd(
-                TEMP_FAILURE_RETRY(open("/sys/kernel/mm/page_idle/bitmap", O_RDWR | O_CLOEXEC)));
-        if (idle_fd < 0) {
-            PLOG(ERROR) << "Failed to open page idle bitmap";
-            return false;
-        }
-        pageidle_fd_ = std::move(idle_fd);
-    }
-
-    return true;
-}
-
-bool PageAcct::PageFlags(uint64_t pfn, uint64_t* flags) {
-    if (!flags) return false;
-
-    if (kpageflags_fd_ < 0) {
-        if (!InitPageAcct()) return false;
-    }
-
-    if (pread64(kpageflags_fd_, flags, sizeof(uint64_t), pfn * sizeof(uint64_t)) !=
-        sizeof(uint64_t)) {
-        PLOG(ERROR) << "Failed to read page flags for page " << pfn;
-        return false;
-    }
-    return true;
-}
-
-bool PageAcct::PageMapCount(uint64_t pfn, uint64_t* mapcount) {
-    if (!mapcount) return false;
-
-    if (kpagecount_fd_ < 0) {
-        if (!InitPageAcct()) return false;
-    }
-
-    if (pread64(kpagecount_fd_, mapcount, sizeof(uint64_t), pfn * sizeof(uint64_t)) !=
-        sizeof(uint64_t)) {
-        PLOG(ERROR) << "Failed to read map count for page " << pfn;
-        return false;
-    }
-    return true;
-}
-
-int PageAcct::IsPageIdle(uint64_t pfn) {
-    if (pageidle_fd_ < 0) {
-        if (!InitPageAcct(true)) return -EOPNOTSUPP;
-    }
-
-    int idle_status = MarkPageIdle(pfn);
-    if (idle_status) return idle_status;
-
-    return GetPageIdle(pfn);
-}
-
-int PageAcct::MarkPageIdle(uint64_t pfn) const {
-    off64_t offset = pfn_to_idle_bitmap_offset(pfn);
-    // set the bit corresponding to page frame
-    uint64_t idle_bits = 1ULL << (pfn % 64);
-
-    if (pwrite64(pageidle_fd_, &idle_bits, sizeof(uint64_t), offset) < 0) {
-        PLOG(ERROR) << "Failed to write page idle bitmap for page " << pfn;
-        return -errno;
-    }
-
-    return 0;
-}
-
-int PageAcct::GetPageIdle(uint64_t pfn) const {
-    off64_t offset = pfn_to_idle_bitmap_offset(pfn);
-    uint64_t idle_bits;
-
-    if (pread64(pageidle_fd_, &idle_bits, sizeof(uint64_t), offset) != sizeof(uint64_t)) {
-        PLOG(ERROR) << "Failed to read page idle bitmap for page " << pfn;
-        return -errno;
-    }
-
-    return !!(idle_bits & (1ULL << (pfn % 64)));
-}
-
-// Public methods
-bool page_present(uint64_t pagemap_val) {
-    return PAGE_PRESENT(pagemap_val);
-}
-
-bool page_swapped(uint64_t pagemap_val) {
-    return PAGE_SWAPPED(pagemap_val);
-}
-
-uint64_t page_pfn(uint64_t pagemap_val) {
-    return PAGE_PFN(pagemap_val);
-}
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/procmeminfo.cpp b/libmeminfo/procmeminfo.cpp
deleted file mode 100644
index a8b43c1..0000000
--- a/libmeminfo/procmeminfo.cpp
+++ /dev/null
@@ -1,536 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <linux/kernel-page-flags.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include <atomic>
-#include <fstream>
-#include <iostream>
-#include <memory>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-#include <procinfo/process_map.h>
-
-#include "meminfo_private.h"
-
-namespace android {
-namespace meminfo {
-
-static void add_mem_usage(MemUsage* to, const MemUsage& from) {
-    to->vss += from.vss;
-    to->rss += from.rss;
-    to->pss += from.pss;
-    to->uss += from.uss;
-
-    to->swap += from.swap;
-
-    to->private_clean += from.private_clean;
-    to->private_dirty += from.private_dirty;
-
-    to->shared_clean += from.shared_clean;
-    to->shared_dirty += from.shared_dirty;
-}
-
-// Returns true if the line was valid smaps stats line false otherwise.
-static bool parse_smaps_field(const char* line, MemUsage* stats) {
-    char field[64];
-    int len;
-    if (sscanf(line, "%63s %n", field, &len) == 1 && *field && field[strlen(field) - 1] == ':') {
-        const char* c = line + len;
-        switch (field[0]) {
-            case 'P':
-                if (strncmp(field, "Pss:", 4) == 0) {
-                    stats->pss = strtoull(c, nullptr, 10);
-                } else if (strncmp(field, "Private_Clean:", 14) == 0) {
-                    uint64_t prcl = strtoull(c, nullptr, 10);
-                    stats->private_clean = prcl;
-                    stats->uss += prcl;
-                } else if (strncmp(field, "Private_Dirty:", 14) == 0) {
-                    uint64_t prdi = strtoull(c, nullptr, 10);
-                    stats->private_dirty = prdi;
-                    stats->uss += prdi;
-                }
-                break;
-            case 'S':
-                if (strncmp(field, "Size:", 5) == 0) {
-                    stats->vss = strtoull(c, nullptr, 10);
-                } else if (strncmp(field, "Shared_Clean:", 13) == 0) {
-                    stats->shared_clean = strtoull(c, nullptr, 10);
-                } else if (strncmp(field, "Shared_Dirty:", 13) == 0) {
-                    stats->shared_dirty = strtoull(c, nullptr, 10);
-                } else if (strncmp(field, "Swap:", 5) == 0) {
-                    stats->swap = strtoull(c, nullptr, 10);
-                } else if (strncmp(field, "SwapPss:", 8) == 0) {
-                    stats->swap_pss = strtoull(c, nullptr, 10);
-                }
-                break;
-            case 'R':
-                if (strncmp(field, "Rss:", 4) == 0) {
-                    stats->rss = strtoull(c, nullptr, 10);
-                }
-                break;
-        }
-        return true;
-    }
-
-    return false;
-}
-
-bool ProcMemInfo::ResetWorkingSet(pid_t pid) {
-    std::string clear_refs_path = ::android::base::StringPrintf("/proc/%d/clear_refs", pid);
-    if (!::android::base::WriteStringToFile("1\n", clear_refs_path)) {
-        PLOG(ERROR) << "Failed to write to " << clear_refs_path;
-        return false;
-    }
-
-    return true;
-}
-
-ProcMemInfo::ProcMemInfo(pid_t pid, bool get_wss, uint64_t pgflags, uint64_t pgflags_mask)
-    : pid_(pid), get_wss_(get_wss), pgflags_(pgflags), pgflags_mask_(pgflags_mask) {}
-
-const std::vector<Vma>& ProcMemInfo::Maps() {
-    if (maps_.empty() && !ReadMaps(get_wss_)) {
-        LOG(ERROR) << "Failed to read maps for Process " << pid_;
-    }
-
-    return maps_;
-}
-
-const std::vector<Vma>& ProcMemInfo::MapsWithPageIdle() {
-    if (maps_.empty() && !ReadMaps(get_wss_, true)) {
-        LOG(ERROR) << "Failed to read maps with page idle for Process " << pid_;
-    }
-
-    return maps_;
-}
-
-const std::vector<Vma>& ProcMemInfo::Smaps(const std::string& path) {
-    if (!maps_.empty()) {
-        return maps_;
-    }
-
-    auto collect_vmas = [&](const Vma& vma) { maps_.emplace_back(vma); };
-    if (path.empty() && !ForEachVma(collect_vmas)) {
-        LOG(ERROR) << "Failed to read smaps for Process " << pid_;
-        maps_.clear();
-    }
-
-    if (!path.empty() && !ForEachVmaFromFile(path, collect_vmas)) {
-        LOG(ERROR) << "Failed to read smaps from file " << path;
-        maps_.clear();
-    }
-
-    return maps_;
-}
-
-const MemUsage& ProcMemInfo::Usage() {
-    if (get_wss_) {
-        LOG(WARNING) << "Trying to read process memory usage for " << pid_
-                     << " using invalid object";
-        return usage_;
-    }
-
-    if (maps_.empty() && !ReadMaps(get_wss_)) {
-        LOG(ERROR) << "Failed to get memory usage for Process " << pid_;
-    }
-
-    return usage_;
-}
-
-const MemUsage& ProcMemInfo::Wss() {
-    if (!get_wss_) {
-        LOG(WARNING) << "Trying to read process working set for " << pid_
-                     << " using invalid object";
-        return usage_;
-    }
-
-    if (maps_.empty() && !ReadMaps(get_wss_)) {
-        LOG(ERROR) << "Failed to get working set for Process " << pid_;
-    }
-
-    return usage_;
-}
-
-bool ProcMemInfo::ForEachVma(const VmaCallback& callback) {
-    std::string path = ::android::base::StringPrintf("/proc/%d/smaps", pid_);
-    return ForEachVmaFromFile(path, callback);
-}
-
-bool ProcMemInfo::SmapsOrRollup(MemUsage* stats) const {
-    std::string path = ::android::base::StringPrintf(
-            "/proc/%d/%s", pid_, IsSmapsRollupSupported(pid_) ? "smaps_rollup" : "smaps");
-    return SmapsOrRollupFromFile(path, stats);
-}
-
-bool ProcMemInfo::SmapsOrRollupPss(uint64_t* pss) const {
-    std::string path = ::android::base::StringPrintf(
-            "/proc/%d/%s", pid_, IsSmapsRollupSupported(pid_) ? "smaps_rollup" : "smaps");
-    return SmapsOrRollupPssFromFile(path, pss);
-}
-
-const std::vector<uint16_t>& ProcMemInfo::SwapOffsets() {
-    if (get_wss_) {
-        LOG(WARNING) << "Trying to read process swap offsets for " << pid_
-                     << " using invalid object";
-        return swap_offsets_;
-    }
-
-    if (maps_.empty() && !ReadMaps(get_wss_)) {
-        LOG(ERROR) << "Failed to get swap offsets for Process " << pid_;
-    }
-
-    return swap_offsets_;
-}
-
-bool ProcMemInfo::PageMap(const Vma& vma, std::vector<uint64_t>* pagemap) {
-    pagemap->clear();
-    std::string pagemap_file = ::android::base::StringPrintf("/proc/%d/pagemap", pid_);
-    ::android::base::unique_fd pagemap_fd(
-            TEMP_FAILURE_RETRY(open(pagemap_file.c_str(), O_RDONLY | O_CLOEXEC)));
-    if (pagemap_fd < 0) {
-        PLOG(ERROR) << "Failed to open " << pagemap_file;
-        return false;
-    }
-
-    uint64_t nr_pages = (vma.end - vma.start) / getpagesize();
-    pagemap->reserve(nr_pages);
-
-    uint64_t idx = vma.start / getpagesize();
-    uint64_t last = idx + nr_pages;
-    uint64_t val;
-    for (; idx < last; idx++) {
-        if (pread64(pagemap_fd, &val, sizeof(uint64_t), idx * sizeof(uint64_t)) < 0) {
-            PLOG(ERROR) << "Failed to read page frames from page map for pid: " << pid_;
-            return false;
-        }
-        pagemap->emplace_back(val);
-    }
-
-    return true;
-}
-
-bool ProcMemInfo::ReadMaps(bool get_wss, bool use_pageidle) {
-    // Each object reads /proc/<pid>/maps only once. This is done to make sure programs that are
-    // running for the lifetime of the system can recycle the objects and don't have to
-    // unnecessarily retain and update this object in memory (which can get significantly large).
-    // E.g. A program that only needs to reset the working set will never all ->Maps(), ->Usage().
-    // E.g. A program that is monitoring smaps_rollup, may never call ->maps(), Usage(), so it
-    // doesn't make sense for us to parse and retain unnecessary memory accounting stats by default.
-    if (!maps_.empty()) return true;
-
-    // parse and read /proc/<pid>/maps
-    std::string maps_file = ::android::base::StringPrintf("/proc/%d/maps", pid_);
-    if (!::android::procinfo::ReadMapFile(
-                maps_file, [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t,
-                               const char* name) {
-                    maps_.emplace_back(Vma(start, end, pgoff, flags, name));
-                })) {
-        LOG(ERROR) << "Failed to parse " << maps_file;
-        maps_.clear();
-        return false;
-    }
-
-    std::string pagemap_file = ::android::base::StringPrintf("/proc/%d/pagemap", pid_);
-    ::android::base::unique_fd pagemap_fd(
-            TEMP_FAILURE_RETRY(open(pagemap_file.c_str(), O_RDONLY | O_CLOEXEC)));
-    if (pagemap_fd < 0) {
-        PLOG(ERROR) << "Failed to open " << pagemap_file;
-        return false;
-    }
-
-    for (auto& vma : maps_) {
-        if (!ReadVmaStats(pagemap_fd.get(), vma, get_wss, use_pageidle)) {
-            LOG(ERROR) << "Failed to read page map for vma " << vma.name << "[" << vma.start << "-"
-                       << vma.end << "]";
-            maps_.clear();
-            return false;
-        }
-        add_mem_usage(&usage_, vma.usage);
-    }
-
-    return true;
-}
-
-bool ProcMemInfo::ReadVmaStats(int pagemap_fd, Vma& vma, bool get_wss, bool use_pageidle) {
-    PageAcct& pinfo = PageAcct::Instance();
-    if (get_wss && use_pageidle && !pinfo.InitPageAcct(true)) {
-        LOG(ERROR) << "Failed to init idle page accounting";
-        return false;
-    }
-
-    uint64_t pagesz = getpagesize();
-    size_t num_pages = (vma.end - vma.start) / pagesz;
-    size_t first_page = vma.start / pagesz;
-
-    std::vector<uint64_t> page_cache;
-    size_t cur_page_cache_index = 0;
-    size_t num_in_page_cache = 0;
-    size_t num_leftover_pages = num_pages;
-    for (size_t cur_page = first_page; cur_page < first_page + num_pages; ++cur_page) {
-        if (!get_wss) {
-            vma.usage.vss += pagesz;
-        }
-
-        // Cache page map data.
-        if (cur_page_cache_index == num_in_page_cache) {
-            static constexpr size_t kMaxPages = 2048;
-            num_leftover_pages -= num_in_page_cache;
-            if (num_leftover_pages > kMaxPages) {
-                num_in_page_cache = kMaxPages;
-            } else {
-                num_in_page_cache = num_leftover_pages;
-            }
-            page_cache.resize(num_in_page_cache);
-            size_t total_bytes = page_cache.size() * sizeof(uint64_t);
-            ssize_t bytes = pread64(pagemap_fd, page_cache.data(), total_bytes,
-                                    cur_page * sizeof(uint64_t));
-            if (bytes != total_bytes) {
-                if (bytes == -1) {
-                    PLOG(ERROR) << "Failed to read page data at offset 0x" << std::hex
-                                << cur_page * sizeof(uint64_t);
-                } else {
-                    LOG(ERROR) << "Failed to read page data at offset 0x" << std::hex
-                               << cur_page * sizeof(uint64_t) << std::dec << " read bytes " << bytes
-                               << " expected bytes " << total_bytes;
-                }
-                return false;
-            }
-            cur_page_cache_index = 0;
-        }
-
-        uint64_t page_info = page_cache[cur_page_cache_index++];
-        if (!PAGE_PRESENT(page_info) && !PAGE_SWAPPED(page_info)) continue;
-
-        if (PAGE_SWAPPED(page_info)) {
-            vma.usage.swap += pagesz;
-            swap_offsets_.emplace_back(PAGE_SWAP_OFFSET(page_info));
-            continue;
-        }
-
-        uint64_t page_frame = PAGE_PFN(page_info);
-        uint64_t cur_page_flags;
-        if (!pinfo.PageFlags(page_frame, &cur_page_flags)) {
-            LOG(ERROR) << "Failed to get page flags for " << page_frame << " in process " << pid_;
-            swap_offsets_.clear();
-            return false;
-        }
-
-        // skip unwanted pages from the count
-        if ((cur_page_flags & pgflags_mask_) != pgflags_) continue;
-
-        uint64_t cur_page_counts;
-        if (!pinfo.PageMapCount(page_frame, &cur_page_counts)) {
-            LOG(ERROR) << "Failed to get page count for " << page_frame << " in process " << pid_;
-            swap_offsets_.clear();
-            return false;
-        }
-
-        // Page was unmapped between the presence check at the beginning of the loop and here.
-        if (cur_page_counts == 0) {
-            continue;
-        }
-
-        bool is_dirty = !!(cur_page_flags & (1 << KPF_DIRTY));
-        bool is_private = (cur_page_counts == 1);
-        // Working set
-        if (get_wss) {
-            bool is_referenced = use_pageidle ? (pinfo.IsPageIdle(page_frame) == 1)
-                                              : !!(cur_page_flags & (1 << KPF_REFERENCED));
-            if (!is_referenced) {
-                continue;
-            }
-            // This effectively makes vss = rss for the working set is requested.
-            // The libpagemap implementation returns vss > rss for
-            // working set, which doesn't make sense.
-            vma.usage.vss += pagesz;
-        }
-
-        vma.usage.rss += pagesz;
-        vma.usage.uss += is_private ? pagesz : 0;
-        vma.usage.pss += pagesz / cur_page_counts;
-        if (is_private) {
-            vma.usage.private_dirty += is_dirty ? pagesz : 0;
-            vma.usage.private_clean += is_dirty ? 0 : pagesz;
-        } else {
-            vma.usage.shared_dirty += is_dirty ? pagesz : 0;
-            vma.usage.shared_clean += is_dirty ? 0 : pagesz;
-        }
-    }
-    return true;
-}
-
-// Public APIs
-bool ForEachVmaFromFile(const std::string& path, const VmaCallback& callback) {
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        return false;
-    }
-
-    char* line = nullptr;
-    bool parsing_vma = false;
-    ssize_t line_len;
-    size_t line_alloc = 0;
-    Vma vma;
-    while ((line_len = getline(&line, &line_alloc, fp.get())) > 0) {
-        // Make sure the line buffer terminates like a C string for ReadMapFile
-        line[line_len] = '\0';
-
-        if (parsing_vma) {
-            if (parse_smaps_field(line, &vma.usage)) {
-                // This was a stats field
-                continue;
-            }
-
-            // Done collecting stats, make the call back
-            callback(vma);
-            parsing_vma = false;
-        }
-
-        vma.clear();
-        // If it has, we are looking for the vma stats
-        // 00400000-00409000 r-xp 00000000 fc:00 426998  /usr/lib/gvfs/gvfsd-http
-        if (!::android::procinfo::ReadMapFileContent(
-                    line, [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t,
-                              const char* name) {
-                        vma.start = start;
-                        vma.end = end;
-                        vma.flags = flags;
-                        vma.offset = pgoff;
-                        vma.name = name;
-                    })) {
-            LOG(ERROR) << "Failed to parse " << path;
-            return false;
-        }
-        parsing_vma = true;
-    }
-
-    // free getline() managed buffer
-    free(line);
-
-    if (parsing_vma) {
-        callback(vma);
-    }
-
-    return true;
-}
-
-enum smaps_rollup_support { UNTRIED, SUPPORTED, UNSUPPORTED };
-
-static std::atomic<smaps_rollup_support> g_rollup_support = UNTRIED;
-
-bool IsSmapsRollupSupported(pid_t pid) {
-    // Similar to OpenSmapsOrRollup checks from android_os_Debug.cpp, except
-    // the method only checks if rollup is supported and returns the status
-    // right away.
-    enum smaps_rollup_support rollup_support = g_rollup_support.load(std::memory_order_relaxed);
-    if (rollup_support != UNTRIED) {
-        return rollup_support == SUPPORTED;
-    }
-    std::string rollup_file = ::android::base::StringPrintf("/proc/%d/smaps_rollup", pid);
-    if (access(rollup_file.c_str(), F_OK | R_OK)) {
-        // No check for errno = ENOENT necessary here. The caller MUST fallback to
-        // using /proc/<pid>/smaps instead anyway.
-        g_rollup_support.store(UNSUPPORTED, std::memory_order_relaxed);
-        return false;
-    }
-
-    g_rollup_support.store(SUPPORTED, std::memory_order_relaxed);
-    LOG(INFO) << "Using smaps_rollup for pss collection";
-    return true;
-}
-
-bool SmapsOrRollupFromFile(const std::string& path, MemUsage* stats) {
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        return false;
-    }
-
-    char* line = nullptr;
-    size_t line_alloc = 0;
-    stats->clear();
-    while (getline(&line, &line_alloc, fp.get()) > 0) {
-        switch (line[0]) {
-            case 'P':
-                if (strncmp(line, "Pss:", 4) == 0) {
-                    char* c = line + 4;
-                    stats->pss += strtoull(c, nullptr, 10);
-                } else if (strncmp(line, "Private_Clean:", 14) == 0) {
-                    char* c = line + 14;
-                    uint64_t prcl = strtoull(c, nullptr, 10);
-                    stats->private_clean += prcl;
-                    stats->uss += prcl;
-                } else if (strncmp(line, "Private_Dirty:", 14) == 0) {
-                    char* c = line + 14;
-                    uint64_t prdi = strtoull(c, nullptr, 10);
-                    stats->private_dirty += prdi;
-                    stats->uss += prdi;
-                }
-                break;
-            case 'R':
-                if (strncmp(line, "Rss:", 4) == 0) {
-                    char* c = line + 4;
-                    stats->rss += strtoull(c, nullptr, 10);
-                }
-                break;
-            case 'S':
-                if (strncmp(line, "SwapPss:", 8) == 0) {
-                    char* c = line + 8;
-                    stats->swap_pss += strtoull(c, nullptr, 10);
-                }
-                break;
-        }
-    }
-
-    // free getline() managed buffer
-    free(line);
-    return true;
-}
-
-bool SmapsOrRollupPssFromFile(const std::string& path, uint64_t* pss) {
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        return false;
-    }
-    *pss = 0;
-    char* line = nullptr;
-    size_t line_alloc = 0;
-    while (getline(&line, &line_alloc, fp.get()) > 0) {
-        uint64_t v;
-        if (sscanf(line, "Pss: %" SCNu64 " kB", &v) == 1) {
-            *pss += v;
-        }
-    }
-
-    // free getline() managed buffer
-    free(line);
-    return true;
-}
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/sysmeminfo.cpp b/libmeminfo/sysmeminfo.cpp
deleted file mode 100644
index 5cfa6c3..0000000
--- a/libmeminfo/sysmeminfo.cpp
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <algorithm>
-#include <cctype>
-#include <cstdio>
-#include <fstream>
-#include <iterator>
-#include <sstream>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-
-#include "meminfo_private.h"
-
-namespace android {
-namespace meminfo {
-
-const std::vector<std::string> SysMemInfo::kDefaultSysMemInfoTags = {
-        SysMemInfo::kMemTotal,      SysMemInfo::kMemFree,        SysMemInfo::kMemBuffers,
-        SysMemInfo::kMemCached,     SysMemInfo::kMemShmem,       SysMemInfo::kMemSlab,
-        SysMemInfo::kMemSReclaim,   SysMemInfo::kMemSUnreclaim,  SysMemInfo::kMemSwapTotal,
-        SysMemInfo::kMemSwapFree,   SysMemInfo::kMemMapped,      SysMemInfo::kMemVmallocUsed,
-        SysMemInfo::kMemPageTables, SysMemInfo::kMemKernelStack,
-};
-
-bool SysMemInfo::ReadMemInfo(const std::string& path) {
-    return ReadMemInfo(SysMemInfo::kDefaultSysMemInfoTags, path,
-                       [&](const std::string& tag, uint64_t val) { mem_in_kb_[tag] = val; });
-}
-
-bool SysMemInfo::ReadMemInfo(std::vector<uint64_t>* out, const std::string& path) {
-    return ReadMemInfo(SysMemInfo::kDefaultSysMemInfoTags, out, path);
-}
-
-bool SysMemInfo::ReadMemInfo(const std::vector<std::string>& tags, std::vector<uint64_t>* out,
-                             const std::string& path) {
-    out->clear();
-    out->resize(tags.size());
-
-    return ReadMemInfo(tags, path, [&]([[maybe_unused]] const std::string& tag, uint64_t val) {
-        auto it = std::find(tags.begin(), tags.end(), tag);
-        if (it == tags.end()) {
-            LOG(ERROR) << "Tried to store invalid tag: " << tag;
-            return;
-        }
-        auto index = std::distance(tags.begin(), it);
-        // store the values in the same order as the tags
-        out->at(index) = val;
-    });
-}
-
-uint64_t SysMemInfo::ReadVmallocInfo() {
-    return ::android::meminfo::ReadVmallocInfo();
-}
-
-// TODO: Delete this function if it can't match up with the c-like implementation below.
-// Currently, this added about 50 % extra overhead on hikey.
-#if 0
-bool SysMemInfo::ReadMemInfo(const std::vector<std::string>& tags, const std::string& path) {
-    std::string buffer;
-    if (!::android::base::ReadFileToString(path, &buffer)) {
-        PLOG(ERROR) << "Failed to read : " << path;
-        return false;
-    }
-
-    uint32_t total_found = 0;
-    for (auto s = buffer.begin(); s < buffer.end() && total_found < tags.size();) {
-        for (auto& tag : tags) {
-            if (tag == std::string(s, s + tag.size())) {
-                s += tag.size();
-                while (isspace(*s)) s++;
-                auto num_start = s;
-                while (std::isdigit(*s)) s++;
-
-                std::string number(num_start, num_start + (s - num_start));
-                if (!::android::base::ParseUint(number, &mem_in_kb_[tag])) {
-                    LOG(ERROR) << "Failed to parse uint";
-                    return false;
-                }
-                total_found++;
-                break;
-            }
-        }
-        while (s < buffer.end() && *s != '\n') s++;
-        if (s < buffer.end()) s++;
-    }
-
-    return true;
-}
-
-#else
-bool SysMemInfo::ReadMemInfo(const std::vector<std::string>& tags, const std::string& path,
-                             std::function<void(const std::string&, uint64_t)> store_val) {
-    char buffer[4096];
-    int fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
-    if (fd < 0) {
-        PLOG(ERROR) << "Failed to open file :" << path;
-        return false;
-    }
-
-    const int len = read(fd, buffer, sizeof(buffer) - 1);
-    close(fd);
-    if (len < 0) {
-        return false;
-    }
-
-    buffer[len] = '\0';
-    char* p = buffer;
-    uint32_t found = 0;
-    uint32_t lineno = 0;
-    bool zram_tag_found = false;
-    while (*p && found < tags.size()) {
-        for (auto& tag : tags) {
-            // Special case for "Zram:" tag that android_os_Debug and friends look
-            // up along with the rest of the numbers from /proc/meminfo
-            if (!zram_tag_found && tag == "Zram:") {
-                store_val(tag, mem_zram_kb());
-                zram_tag_found = true;
-                found++;
-                continue;
-            }
-
-            if (strncmp(p, tag.c_str(), tag.size()) == 0) {
-                p += tag.size();
-                while (*p == ' ') p++;
-                char* endptr = nullptr;
-                uint64_t val = strtoull(p, &endptr, 10);
-                if (p == endptr) {
-                    PLOG(ERROR) << "Failed to parse line:" << lineno + 1 << " in file: " << path;
-                    return false;
-                }
-                store_val(tag, val);
-                p = endptr;
-                found++;
-                break;
-            }
-        }
-
-        while (*p && *p != '\n') {
-            p++;
-        }
-        if (*p) p++;
-        lineno++;
-    }
-
-    return true;
-}
-#endif
-
-uint64_t SysMemInfo::mem_zram_kb(const std::string& zram_dev) {
-    uint64_t mem_zram_total = 0;
-    if (!zram_dev.empty()) {
-        if (!MemZramDevice(zram_dev, &mem_zram_total)) {
-            return 0;
-        }
-        return mem_zram_total / 1024;
-    }
-
-    constexpr uint32_t kMaxZramDevices = 256;
-    for (uint32_t i = 0; i < kMaxZramDevices; i++) {
-        std::string zram_dev = ::android::base::StringPrintf("/sys/block/zram%u/", i);
-        if (access(zram_dev.c_str(), F_OK)) {
-            // We assume zram devices appear in range 0-255 and appear always in sequence
-            // under /sys/block. So, stop looking for them once we find one is missing.
-            break;
-        }
-
-        uint64_t mem_zram_dev;
-        if (!MemZramDevice(zram_dev, &mem_zram_dev)) {
-            return 0;
-        }
-
-        mem_zram_total += mem_zram_dev;
-    }
-
-    return mem_zram_total / 1024;
-}
-
-bool SysMemInfo::MemZramDevice(const std::string& zram_dev, uint64_t* mem_zram_dev) {
-    std::string mmstat = ::android::base::StringPrintf("%s/%s", zram_dev.c_str(), "mm_stat");
-    auto mmstat_fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(mmstat.c_str(), "re"), fclose};
-    if (mmstat_fp != nullptr) {
-        // only if we do have mmstat, use it. Otherwise, fall through to trying out the old
-        // 'mem_used_total'
-        if (fscanf(mmstat_fp.get(), "%*" SCNu64 " %*" SCNu64 " %" SCNu64, mem_zram_dev) != 1) {
-            PLOG(ERROR) << "Malformed mm_stat file in: " << zram_dev;
-            return false;
-        }
-        return true;
-    }
-
-    std::string content;
-    if (::android::base::ReadFileToString(zram_dev + "mem_used_total", &content)) {
-        *mem_zram_dev = strtoull(content.c_str(), NULL, 10);
-        if (*mem_zram_dev == ULLONG_MAX) {
-            PLOG(ERROR) << "Malformed mem_used_total file for zram dev: " << zram_dev
-                        << " content: " << content;
-            return false;
-        }
-
-        return true;
-    }
-
-    LOG(ERROR) << "Can't find memory status under: " << zram_dev;
-    return false;
-}
-
-// Public methods
-uint64_t ReadVmallocInfo(const std::string& path) {
-    uint64_t vmalloc_total = 0;
-    auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
-    if (fp == nullptr) {
-        return vmalloc_total;
-    }
-
-    char* line = nullptr;
-    size_t line_alloc = 0;
-    while (getline(&line, &line_alloc, fp.get()) > 0) {
-        // We are looking for lines like
-        //
-        // 0x0000000000000000-0x0000000000000000   12288 drm_property_create_blob+0x44/0xec pages=2 vmalloc
-        // 0x0000000000000000-0x0000000000000000    8192 wlan_logging_sock_init_svc+0xf8/0x4f0 [wlan] pages=1 vmalloc
-        //
-        // Notice that if the caller is coming from a module, the kernel prints and extra
-        // "[module_name]" after the address and the symbol of the call site. This means we can't
-        // use the old sscanf() method of getting the # of pages.
-        char* p_start = strstr(line, "pages=");
-        if (p_start == nullptr) {
-            // we didn't find anything
-            continue;
-        }
-
-        uint64_t nr_pages;
-        if (sscanf(p_start, "pages=%" SCNu64 "", &nr_pages) == 1) {
-            vmalloc_total += (nr_pages * getpagesize());
-        }
-    }
-
-    free(line);
-
-    return vmalloc_total;
-}
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmeminfo/testdata1/mm_stat b/libmeminfo/testdata1/mm_stat
deleted file mode 100644
index 32b325f..0000000
--- a/libmeminfo/testdata1/mm_stat
+++ /dev/null
@@ -1 +0,0 @@
- 145674240 26801454 31236096        0 45772800     3042     1887      517
diff --git a/libmeminfo/testdata1/showmap_test.sh b/libmeminfo/testdata1/showmap_test.sh
deleted file mode 100755
index 8ee713e..0000000
--- a/libmeminfo/testdata1/showmap_test.sh
+++ /dev/null
@@ -1,86 +0,0 @@
-#! /system/bin/sh
-
-TESTDATA_PATH=/data/nativetest64/libmeminfo_test/testdata1
-SMAPS=$TESTDATA_PATH/smaps
-OUT1=$TMPDIR/1.txt
-OUT2=$TMPDIR/2.txt
-
-showmap -f $SMAPS > $OUT1
-showmap2 -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -f <smaps>";
-else
-    echo "pass: showmap -f <smaps>"
-fi
-
-showmap -q -f $SMAPS > $OUT1
-showmap2 -q -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -q -f <smaps>";
-else
-    echo "pass: showmap -q -f <smaps>"
-fi
-
-showmap -v -f $SMAPS > $OUT1
-showmap2 -v -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -v -f <smaps>";
-else
-    echo "pass: showmap -v -f <smaps>"
-fi
-
-showmap -a -f $SMAPS > $OUT1
-showmap2 -a -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -a -f <smaps>";
-else
-    echo "pass: showmap -a -f <smaps>"
-fi
-
-# Note that all tests from here down that have the option
-# '-a' added to the command are expected to fail as
-# 'showmap2' actually fixes the 64-bit address truncating
-# that was already happening with showmap
-showmap -a -t -f $SMAPS > $OUT1
-showmap2 -a -t -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -a -t -f <smaps>";
-else
-    echo "pass: showmap -a -t -f <smaps>"
-fi
-
-showmap -a -t -v -f $SMAPS > $OUT1
-showmap2 -a -t -v -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -a -t -v -f <smaps>";
-else
-    echo "pass: showmap -a -t -v -f <smaps>"
-fi
-
-# Note: This test again is expected to fail as the new
-# showmap fixes an issue with -t where the tool was only
-# showing maps with private dirty pages. The '-t' option was however
-# supposed to show all maps that have 'private' pages, clean or dirty.
-showmap -t -f $SMAPS > $OUT1
-showmap2 -t -f $SMAPS > $OUT2
-diff $OUT1 $OUT2 > /dev/null
-ret=$?
-if [[ $ret != 0 ]]; then
-    echo "fail: showmap -t -f <smaps>";
-else
-    echo "pass: showmap -t -f <smaps>"
-fi
-
-
diff --git a/libmeminfo/testdata1/smaps b/libmeminfo/testdata1/smaps
deleted file mode 100644
index 23aa2af..0000000
--- a/libmeminfo/testdata1/smaps
+++ /dev/null
@@ -1,56297 +0,0 @@
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diff --git a/libmeminfo/testdata1/smaps_short b/libmeminfo/testdata1/smaps_short
deleted file mode 100644
index cee67b3..0000000
--- a/libmeminfo/testdata1/smaps_short
+++ /dev/null
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diff --git a/libmeminfo/testdata1/vmallocinfo b/libmeminfo/testdata1/vmallocinfo
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--- a/libmeminfo/testdata1/vmallocinfo
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diff --git a/libmeminfo/testdata2/mem_used_total b/libmeminfo/testdata2/mem_used_total
deleted file mode 100644
index 97fcf41..0000000
--- a/libmeminfo/testdata2/mem_used_total
+++ /dev/null
@@ -1 +0,0 @@
-31236096
diff --git a/libmeminfo/tools/Android.bp b/libmeminfo/tools/Android.bp
deleted file mode 100644
index 2e89c41..0000000
--- a/libmeminfo/tools/Android.bp
+++ /dev/null
@@ -1,83 +0,0 @@
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-cc_binary {
-    name: "librank",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    srcs: ["librank.cpp"],
-    shared_libs: [
-        "libbase",
-        "libmeminfo",
-    ],
-}
-
-cc_binary {
-    name: "procmem",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    srcs: ["procmem.cpp"],
-    shared_libs: [
-        "libbase",
-        "libmeminfo",
-    ],
-}
-
-cc_binary {
-    name: "procrank",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    srcs: ["procrank.cpp"],
-    shared_libs: [
-        "libbase",
-        "libmeminfo",
-    ],
-}
-
-cc_binary {
-    name: "showmap",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    srcs: ["showmap.cpp"],
-    shared_libs: [
-        "libbase",
-        "libmeminfo",
-    ],
-}
-
-cc_binary {
-    name: "wsstop",
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-    srcs: ["wsstop.cpp"],
-    shared_libs: [
-        "libbase",
-        "liblog",
-        "libmeminfo",
-    ],
-}
diff --git a/libmeminfo/tools/librank.cpp b/libmeminfo/tools/librank.cpp
deleted file mode 100644
index e53c746..0000000
--- a/libmeminfo/tools/librank.cpp
+++ /dev/null
@@ -1,351 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dirent.h>
-#include <errno.h>
-#include <error.h>
-#include <inttypes.h>
-#include <linux/kernel-page-flags.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <algorithm>
-#include <map>
-#include <memory>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-
-#include <meminfo/procmeminfo.h>
-
-using ::android::meminfo::MemUsage;
-using ::android::meminfo::ProcMemInfo;
-using ::android::meminfo::Vma;
-
-[[noreturn]] static void usage(int exit_status) {
-    fprintf(stderr,
-            "Usage: %s [ -P | -L ] [ -v | -r | -p | -u | -s | -h ]\n"
-            "\n"
-            "Sort options:\n"
-            "    -v  Sort processes by VSS.\n"
-            "    -r  Sort processes by RSS.\n"
-            "    -p  Sort processes by PSS.\n"
-            "    -u  Sort processes by USS.\n"
-            "    -s  Sort processes by swap.\n"
-            "        (Default sort order is PSS.)\n"
-            "    -a  Show all mappings, including stack, heap and anon.\n"
-            "    -P /path  Limit libraries displayed to those in path.\n"
-            "    -R  Reverse sort order (default is descending).\n"
-            "    -m [r][w][x] Only list pages that exactly match permissions\n"
-            "    -c  Only show cached (storage backed) pages\n"
-            "    -C  Only show non-cached (ram/swap backed) pages\n"
-            "    -k  Only show pages collapsed by KSM\n"
-            "    -h  Display this help screen.\n",
-            getprogname());
-    exit(exit_status);
-}
-
-static void add_mem_usage(MemUsage* to, const MemUsage& from) {
-    to->vss += from.vss;
-    to->rss += from.rss;
-    to->pss += from.pss;
-    to->uss += from.uss;
-
-    to->swap += from.swap;
-
-    to->private_clean += from.private_clean;
-    to->private_dirty += from.private_dirty;
-
-    to->shared_clean += from.shared_clean;
-    to->shared_dirty += from.shared_dirty;
-}
-
-struct ProcessRecord {
-  public:
-    ProcessRecord(pid_t pid) : pid_(-1), cmdline_("") {
-        std::string fname = ::android::base::StringPrintf("/proc/%d/cmdline", pid);
-        std::string cmdline;
-        if (!::android::base::ReadFileToString(fname, &cmdline)) {
-            fprintf(stderr, "Failed to read cmdline from: %s\n", fname.c_str());
-            return;
-        }
-        // We deliberately don't read the proc/<pid>cmdline file directly into 'cmdline_'
-        // because of some processes showing up cmdlines that end with "0x00 0x0A 0x00"
-        // e.g. xtra-daemon, lowi-server
-        // The .c_str() assignment below then takes care of trimming the cmdline at the first
-        // 0x00. This is how original procrank worked (luckily)
-        cmdline_ = cmdline.c_str();
-        pid_ = pid;
-        usage_.clear();
-    }
-
-    ~ProcessRecord() = default;
-
-    bool valid() const { return pid_ != -1; }
-
-    // Getters
-    pid_t pid() const { return pid_; }
-    const std::string& cmdline() const { return cmdline_; }
-    const MemUsage& usage() const { return usage_; }
-
-    // Add to the usage
-    void AddUsage(const MemUsage& mem_usage) { add_mem_usage(&usage_, mem_usage); }
-
-  private:
-    pid_t pid_;
-    std::string cmdline_;
-    MemUsage usage_;
-};
-
-struct LibRecord {
-  public:
-    LibRecord(const std::string& name) : name_(name) {}
-    ~LibRecord() = default;
-
-    const std::string& name() const { return name_; }
-    const MemUsage& usage() const { return usage_; }
-    const std::map<pid_t, ProcessRecord>& processes() const { return procs_; }
-    uint64_t pss() const { return usage_.pss; }
-    void AddUsage(const ProcessRecord& proc, const MemUsage& mem_usage) {
-        auto [it, inserted] = procs_.insert(std::pair<pid_t, ProcessRecord>(proc.pid(), proc));
-        it->second.AddUsage(mem_usage);
-        add_mem_usage(&usage_, mem_usage);
-    }
-
-  private:
-    std::string name_;
-    MemUsage usage_;
-    std::map<pid_t, ProcessRecord> procs_;
-};
-
-// List of every library / map
-static std::map<std::string, LibRecord> g_libs;
-
-// List of library/map names that we don't want to show by default
-static const std::vector<std::string> g_blacklisted_libs = {"[heap]", "[stack]"};
-
-// Global flags affected by command line
-static uint64_t g_pgflags = 0;
-static uint64_t g_pgflags_mask = 0;
-static uint16_t g_mapflags_mask = 0;
-static bool g_all_libs = false;
-static bool g_has_swap = false;
-static bool g_reverse_sort = false;
-static std::string g_prefix_filter = "";
-
-static bool read_all_pids(std::function<bool(pid_t pid)> for_each_pid) {
-    std::unique_ptr<DIR, int (*)(DIR*)> procdir(opendir("/proc"), closedir);
-    if (!procdir) return false;
-
-    struct dirent* dir;
-    pid_t pid;
-    while ((dir = readdir(procdir.get()))) {
-        if (!::android::base::ParseInt(dir->d_name, &pid)) continue;
-        if (!for_each_pid(pid)) return false;
-    }
-
-    return true;
-}
-
-static bool scan_libs_per_process(pid_t pid) {
-    ProcMemInfo pmem(pid, false, g_pgflags, g_pgflags_mask);
-    const std::vector<Vma> maps = pmem.Maps();
-    if (maps.size() == 0) {
-        // nothing to do here, continue
-        return true;
-    }
-
-    ProcessRecord proc(pid);
-    if (!proc.valid()) {
-        fprintf(stderr, "Failed to create process record for process: %d\n", pid);
-        return false;
-    }
-
-    for (auto& map : maps) {
-        // skip library / map if prefix for the path doesn't match
-        if (!g_prefix_filter.empty() && !::android::base::StartsWith(map.name, g_prefix_filter)) {
-            continue;
-        }
-        // Skip maps based on map permissions
-        if (g_mapflags_mask &&
-            ((map.flags & (PROT_READ | PROT_WRITE | PROT_EXEC)) != g_mapflags_mask)) {
-            continue;
-        }
-
-        // skip blacklisted library / map names
-        if (!g_all_libs && (std::find(g_blacklisted_libs.begin(), g_blacklisted_libs.end(),
-                                      map.name) != g_blacklisted_libs.end())) {
-            continue;
-        }
-
-        auto [it, inserted] =
-            g_libs.insert(std::pair<std::string, LibRecord>(map.name, LibRecord(map.name)));
-        it->second.AddUsage(proc, map.usage);
-
-        if (!g_has_swap && map.usage.swap) {
-            g_has_swap = true;
-        }
-    }
-
-    return true;
-}
-
-static uint16_t parse_mapflags(const char* mapflags) {
-    uint16_t ret = 0;
-    for (const char* p = mapflags; *p; p++) {
-        switch (*p) {
-            case 'r':
-                ret |= PROT_READ;
-                break;
-            case 'w':
-                ret |= PROT_WRITE;
-                break;
-            case 'x':
-                ret |= PROT_EXEC;
-                break;
-            default:
-                error(EXIT_FAILURE, 0, "Invalid permissions string: %s, %s", mapflags, p);
-        }
-    }
-
-    return ret;
-}
-
-int main(int argc, char* argv[]) {
-    int opt;
-
-    auto pss_sort = [](const ProcessRecord& a, const ProcessRecord& b) {
-        return g_reverse_sort ? a.usage().pss < b.usage().pss : a.usage().pss > b.usage().pss;
-    };
-
-    auto uss_sort = [](const ProcessRecord& a, const ProcessRecord& b) {
-        return g_reverse_sort ? a.usage().uss < b.usage().uss : a.usage().uss > b.usage().uss;
-    };
-
-    auto vss_sort = [](const ProcessRecord& a, const ProcessRecord& b) {
-        return g_reverse_sort ? a.usage().vss < b.usage().vss : a.usage().vss > b.usage().vss;
-    };
-
-    auto rss_sort = [](const ProcessRecord& a, const ProcessRecord& b) {
-        return g_reverse_sort ? a.usage().rss < b.usage().rss : a.usage().rss > b.usage().rss;
-    };
-
-    auto swap_sort = [](const ProcessRecord& a, const ProcessRecord& b) {
-        return g_reverse_sort ? a.usage().swap < b.usage().swap : a.usage().swap > b.usage().swap;
-    };
-
-    std::function<bool(const ProcessRecord&, const ProcessRecord&)> sort_func = pss_sort;
-
-    while ((opt = getopt(argc, argv, "acChkm:pP:uvrsR")) != -1) {
-        switch (opt) {
-            case 'a':
-                g_all_libs = true;
-                break;
-            case 'c':
-                g_pgflags = 0;
-                g_pgflags_mask = (1 << KPF_SWAPBACKED);
-                break;
-            case 'C':
-                g_pgflags = g_pgflags_mask = (1 << KPF_SWAPBACKED);
-                break;
-            case 'h':
-                usage(EXIT_SUCCESS);
-            case 'k':
-                g_pgflags = g_pgflags_mask = (1 << KPF_KSM);
-                break;
-            case 'm':
-                g_mapflags_mask = parse_mapflags(optarg);
-                break;
-            case 'p':
-                sort_func = pss_sort;
-                break;
-            case 'P':
-                g_prefix_filter = optarg;
-                break;
-            case 'u':
-                sort_func = uss_sort;
-                break;
-            case 'v':
-                sort_func = vss_sort;
-                break;
-            case 'r':
-                sort_func = rss_sort;
-                break;
-            case 's':
-                sort_func = swap_sort;
-                break;
-            case 'R':
-                g_reverse_sort = true;
-                break;
-            default:
-                usage(EXIT_FAILURE);
-        }
-    }
-
-    if (!read_all_pids(scan_libs_per_process)) {
-        error(EXIT_FAILURE, 0, "Failed to read all pids from the system");
-    }
-
-    printf(" %6s   %7s   %6s   %6s   %6s  ", "RSStot", "VSS", "RSS", "PSS", "USS");
-    if (g_has_swap) {
-        printf(" %6s  ", "Swap");
-    }
-    printf("Name/PID\n");
-
-    std::vector<LibRecord> v_libs;
-    v_libs.reserve(g_libs.size());
-    std::transform(g_libs.begin(), g_libs.end(), std::back_inserter(v_libs),
-        [] (std::pair<std::string, LibRecord> const& pair) { return pair.second; });
-
-    // sort the libraries by their pss
-    std::sort(v_libs.begin(), v_libs.end(),
-              [](const LibRecord& l1, const LibRecord& l2) { return l1.pss() > l2.pss(); });
-
-    for (auto& lib : v_libs) {
-        printf("%6" PRIu64 "K   %7s   %6s   %6s   %6s  ", lib.pss() / 1024, "", "", "", "");
-        if (g_has_swap) {
-            printf(" %6s  ", "");
-        }
-        printf("%s\n", lib.name().c_str());
-
-        // sort all mappings first
-
-        std::vector<ProcessRecord> procs;
-        procs.reserve(lib.processes().size());
-        std::transform(lib.processes().begin(), lib.processes().end(), std::back_inserter(procs),
-            [] (std::pair<pid_t, ProcessRecord> const& pair) { return pair.second; });
-
-        std::sort(procs.begin(), procs.end(), sort_func);
-
-        for (auto& p : procs) {
-            const MemUsage& usage = p.usage();
-            printf(" %6s  %7" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64 "K  ", "",
-                   usage.vss / 1024, usage.rss / 1024, usage.pss / 1024, usage.uss / 1024);
-            if (g_has_swap) {
-                printf("%6" PRIu64 "K  ", usage.swap / 1024);
-            }
-            printf("  %s [%d]\n", p.cmdline().c_str(), p.pid());
-        }
-    }
-
-    return 0;
-}
diff --git a/libmeminfo/tools/procmem.cpp b/libmeminfo/tools/procmem.cpp
deleted file mode 100644
index 47881ed..0000000
--- a/libmeminfo/tools/procmem.cpp
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <inttypes.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <iostream>
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include <android-base/stringprintf.h>
-#include <meminfo/procmeminfo.h>
-
-using Vma = ::android::meminfo::Vma;
-using ProcMemInfo = ::android::meminfo::ProcMemInfo;
-using MemUsage = ::android::meminfo::MemUsage;
-
-// Global flags to control procmem output
-
-// Set to use page idle bits for working set detection
-bool use_pageidle = false;
-// hides map entries with zero rss
-bool hide_zeroes = false;
-// Reset working set and exit
-bool reset_wss = false;
-// Show working set, mutually exclusive with reset_wss;
-bool show_wss = false;
-
-[[noreturn]] static void usage(int exit_status) {
-    fprintf(stderr,
-            "Usage: %s [-i] [ -w | -W ] [ -p | -m ] [ -h ] pid\n"
-            "    -i  Uses idle page tracking for working set statistics.\n"
-            "    -w  Displays statistics for the working set only.\n"
-            "    -W  Resets the working set of the process.\n"
-            "    -p  Sort by PSS.\n"
-            "    -u  Sort by USS.\n"
-            "    -m  Sort by mapping order (as read from /proc).\n"
-            "    -h  Hide maps with no RSS.\n",
-            getprogname());
-
-    exit(exit_status);
-}
-
-static void print_separator(std::stringstream& ss) {
-    if (show_wss) {
-        ss << ::android::base::StringPrintf("%7s  %7s  %7s  %7s  %7s  %7s  %7s  %s\n", "-------",
-                                            "-------", "-------", "-------", "-------", "-------",
-                                            "-------", "");
-        return;
-    }
-    ss << ::android::base::StringPrintf("%7s  %7s  %7s  %7s  %7s  %7s  %7s  %7s  %s\n", "-------",
-                                        "-------", "-------", "-------", "-------", "-------",
-                                        "-------", "-------", "");
-}
-
-static void print_header(std::stringstream& ss) {
-    if (show_wss) {
-        ss << ::android::base::StringPrintf("%7s  %7s  %7s  %7s  %7s  %7s  %7s  %s\n", "WRss",
-                                            "WPss", "WUss", "WShCl", "WShDi", "WPrCl", "WPrDi",
-                                            "Name");
-    } else {
-        ss << ::android::base::StringPrintf("%7s  %7s  %7s  %7s  %7s  %7s  %7s  %7s  %s\n", "Vss",
-                                            "Rss", "Pss", "Uss", "ShCl", "ShDi", "PrCl", "PrDi",
-                                            "Name");
-    }
-    print_separator(ss);
-}
-
-static void print_stats(std::stringstream& ss, const MemUsage& stats) {
-    if (!show_wss) {
-        ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", stats.vss / 1024);
-    }
-
-    ss << ::android::base::StringPrintf("%6" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64
-                                        "K  %6" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64 "K  ",
-                                        stats.rss / 1024, stats.pss / 1024, stats.uss / 1024,
-                                        stats.shared_clean / 1024, stats.shared_dirty / 1024,
-                                        stats.private_clean / 1024, stats.private_dirty / 1024);
-}
-
-static int show(const MemUsage& proc_stats, const std::vector<Vma>& maps) {
-    std::stringstream ss;
-    print_header(ss);
-    for (auto& vma : maps) {
-        const MemUsage& vma_stats = vma.usage;
-        if (hide_zeroes && vma_stats.rss == 0) {
-            continue;
-        }
-        print_stats(ss, vma_stats);
-        ss << vma.name << std::endl;
-    }
-    print_separator(ss);
-    print_stats(ss, proc_stats);
-    ss << "TOTAL" << std::endl;
-    std::cout << ss.str();
-
-    return 0;
-}
-
-int main(int argc, char* argv[]) {
-    int opt;
-    auto pss_sort = [](const Vma& a, const Vma& b) {
-        uint64_t pss_a = a.usage.pss;
-        uint64_t pss_b = b.usage.pss;
-        return pss_a > pss_b;
-    };
-
-    auto uss_sort = [](const Vma& a, const Vma& b) {
-        uint64_t uss_a = a.usage.uss;
-        uint64_t uss_b = b.usage.uss;
-        return uss_a > uss_b;
-    };
-
-    std::function<bool(const Vma& a, const Vma& b)> sort_func = nullptr;
-    while ((opt = getopt(argc, argv, "himpuWw")) != -1) {
-        switch (opt) {
-            case 'h':
-                hide_zeroes = true;
-                break;
-            case 'i':
-                // TODO: libmeminfo doesn't support the flag to chose
-                // between idle page tracking vs clear_refs. So for now,
-                // this flag is unused and the library defaults to using
-                // /proc/<pid>/clear_refs for finding the working set.
-                use_pageidle = true;
-                break;
-            case 'm':
-                // this is the default
-                break;
-            case 'p':
-                sort_func = pss_sort;
-                break;
-            case 'u':
-                sort_func = uss_sort;
-                break;
-            case 'W':
-                reset_wss = true;
-                break;
-            case 'w':
-                show_wss = true;
-                break;
-            case '?':
-                usage(EXIT_SUCCESS);
-            default:
-                usage(EXIT_FAILURE);
-        }
-    }
-
-    if (optind != (argc - 1)) {
-        fprintf(stderr, "Need exactly one pid at the end\n");
-        usage(EXIT_FAILURE);
-    }
-
-    pid_t pid = atoi(argv[optind]);
-    if (pid == 0) {
-        std::cerr << "Invalid process id" << std::endl;
-        exit(EXIT_FAILURE);
-    }
-
-    if (reset_wss) {
-        if (!ProcMemInfo::ResetWorkingSet(pid)) {
-            std::cerr << "Failed to reset working set of pid : " << pid << std::endl;
-            exit(EXIT_FAILURE);
-        }
-        return 0;
-    }
-
-    ProcMemInfo proc(pid, show_wss);
-    const MemUsage& proc_stats = proc.Usage();
-    std::vector<Vma> maps(proc.Maps());
-    if (sort_func != nullptr) {
-        std::sort(maps.begin(), maps.end(), sort_func);
-    }
-
-    return show(proc_stats, maps);
-}
diff --git a/libmeminfo/tools/procrank.cpp b/libmeminfo/tools/procrank.cpp
deleted file mode 100644
index 1e44ff9..0000000
--- a/libmeminfo/tools/procrank.cpp
+++ /dev/null
@@ -1,536 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/file.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <dirent.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <linux/kernel-page-flags.h>
-#include <linux/oom.h>
-#include <meminfo/procmeminfo.h>
-#include <meminfo/sysmeminfo.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <iostream>
-#include <memory>
-#include <sstream>
-#include <vector>
-
-using ::android::meminfo::MemUsage;
-using ::android::meminfo::ProcMemInfo;
-
-struct ProcessRecord {
-  public:
-    ProcessRecord(pid_t pid, bool get_wss = false, uint64_t pgflags = 0, uint64_t pgflags_mask = 0)
-        : pid_(-1),
-          oomadj_(OOM_SCORE_ADJ_MAX + 1),
-          cmdline_(""),
-          proportional_swap_(0),
-          unique_swap_(0),
-          zswap_(0) {
-        std::unique_ptr<ProcMemInfo> procmem =
-                std::make_unique<ProcMemInfo>(pid, get_wss, pgflags, pgflags_mask);
-        if (procmem == nullptr) {
-            std::cerr << "Failed to create ProcMemInfo for: " << pid << std::endl;
-            return;
-        }
-
-        std::string fname = ::android::base::StringPrintf("/proc/%d/oom_score_adj", pid);
-        auto oomscore_fp =
-                std::unique_ptr<FILE, decltype(&fclose)>{fopen(fname.c_str(), "re"), fclose};
-        if (oomscore_fp == nullptr) {
-            std::cerr << "Failed to open oom_score_adj file: " << fname << std::endl;
-            return;
-        }
-
-        if (fscanf(oomscore_fp.get(), "%d\n", &oomadj_) != 1) {
-            std::cerr << "Failed to read oomadj from: " << fname << std::endl;
-            return;
-        }
-
-        fname = ::android::base::StringPrintf("/proc/%d/cmdline", pid);
-        if (!::android::base::ReadFileToString(fname, &cmdline_)) {
-            std::cerr << "Failed to read cmdline from: " << fname << std::endl;
-            cmdline_ = "<unknown>";
-        }
-        // We deliberately don't read the proc/<pid>cmdline file directly into 'cmdline_'
-        // because of some processes showing up cmdlines that end with "0x00 0x0A 0x00"
-        // e.g. xtra-daemon, lowi-server
-        // The .c_str() assignment below then takes care of trimming the cmdline at the first
-        // 0x00. This is how original procrank worked (luckily)
-        cmdline_.resize(strlen(cmdline_.c_str()));
-        usage_or_wss_ = get_wss ? procmem->Wss() : procmem->Usage();
-        swap_offsets_ = procmem->SwapOffsets();
-        pid_ = pid;
-    }
-
-    bool valid() const { return pid_ != -1; }
-
-    void CalculateSwap(const uint16_t* swap_offset_array, float zram_compression_ratio) {
-        for (auto& off : swap_offsets_) {
-            proportional_swap_ += getpagesize() / swap_offset_array[off];
-            unique_swap_ += swap_offset_array[off] == 1 ? getpagesize() : 0;
-            zswap_ = proportional_swap_ * zram_compression_ratio;
-        }
-    }
-
-    // Getters
-    pid_t pid() const { return pid_; }
-    const std::string& cmdline() const { return cmdline_; }
-    int32_t oomadj() const { return oomadj_; }
-    uint64_t proportional_swap() const { return proportional_swap_; }
-    uint64_t unique_swap() const { return unique_swap_; }
-    uint64_t zswap() const { return zswap_; }
-
-    // Wrappers to ProcMemInfo
-    const std::vector<uint16_t>& SwapOffsets() const { return swap_offsets_; }
-    const MemUsage& Usage() const { return usage_or_wss_; }
-    const MemUsage& Wss() const { return usage_or_wss_; }
-
-  private:
-    pid_t pid_;
-    int32_t oomadj_;
-    std::string cmdline_;
-    uint64_t proportional_swap_;
-    uint64_t unique_swap_;
-    uint64_t zswap_;
-    MemUsage usage_or_wss_;
-    std::vector<uint16_t> swap_offsets_;
-};
-
-// Show working set instead of memory consumption
-bool show_wss = false;
-// Reset working set of each process
-bool reset_wss = false;
-// Show per-process oom_score_adj column
-bool show_oomadj = false;
-// True if the device has swap enabled
-bool has_swap = false;
-// True, if device has zram enabled
-bool has_zram = false;
-// If zram is enabled, the compression ratio is zram used / swap used.
-float zram_compression_ratio = 0.0;
-// Sort process in reverse, default is descending
-bool reverse_sort = false;
-
-// Calculated total memory usage across all processes in the system
-uint64_t total_pss = 0;
-uint64_t total_uss = 0;
-uint64_t total_swap = 0;
-uint64_t total_pswap = 0;
-uint64_t total_uswap = 0;
-uint64_t total_zswap = 0;
-
-[[noreturn]] static void usage(int exit_status) {
-    std::cerr << "Usage: " << getprogname() << " [ -W ] [ -v | -r | -p | -u | -s | -h ]"
-              << std::endl
-              << "    -v  Sort by VSS." << std::endl
-              << "    -r  Sort by RSS." << std::endl
-              << "    -p  Sort by PSS." << std::endl
-              << "    -u  Sort by USS." << std::endl
-              << "    -s  Sort by swap." << std::endl
-              << "        (Default sort order is PSS.)" << std::endl
-              << "    -R  Reverse sort order (default is descending)." << std::endl
-              << "    -c  Only show cached (storage backed) pages" << std::endl
-              << "    -C  Only show non-cached (ram/swap backed) pages" << std::endl
-              << "    -k  Only show pages collapsed by KSM" << std::endl
-              << "    -w  Display statistics for working set only." << std::endl
-              << "    -W  Reset working set of all processes." << std::endl
-              << "    -o  Show and sort by oom score against lowmemorykiller thresholds."
-              << std::endl
-              << "    -h  Display this help screen." << std::endl;
-    exit(exit_status);
-}
-
-static bool read_all_pids(std::vector<pid_t>* pids, std::function<bool(pid_t pid)> for_each_pid) {
-    pids->clear();
-    std::unique_ptr<DIR, int (*)(DIR*)> procdir(opendir("/proc"), closedir);
-    if (!procdir) return false;
-
-    struct dirent* dir;
-    pid_t pid;
-    while ((dir = readdir(procdir.get()))) {
-        if (!::android::base::ParseInt(dir->d_name, &pid)) continue;
-        if (!for_each_pid(pid)) return false;
-        pids->emplace_back(pid);
-    }
-
-    return true;
-}
-
-static bool count_swap_offsets(const ProcessRecord& proc, uint16_t* swap_offset_array,
-                               uint32_t size) {
-    const std::vector<uint16_t>& swp_offs = proc.SwapOffsets();
-    for (auto& off : swp_offs) {
-        if (off >= size) {
-            std::cerr << "swap offset " << off << " is out of bounds for process: " << proc.pid()
-                      << std::endl;
-            return false;
-        }
-
-        if (swap_offset_array[off] == USHRT_MAX) {
-            std::cerr << "swap offset " << off << " ref count overflow in process: " << proc.pid()
-                      << std::endl;
-            return false;
-        }
-
-        swap_offset_array[off]++;
-    }
-
-    return true;
-}
-
-static void print_header(std::stringstream& ss) {
-    ss.str("");
-    ss << ::android::base::StringPrintf("%5s  ", "PID");
-    if (show_oomadj) {
-        ss << ::android::base::StringPrintf("%5s  ", "oom");
-    }
-
-    if (show_wss) {
-        ss << ::android::base::StringPrintf("%7s  %7s  %7s  ", "WRss", "WPss", "WUss");
-        // now swap statistics here, working set pages by definition shouldn't end up in swap.
-    } else {
-        ss << ::android::base::StringPrintf("%8s  %7s  %7s  %7s  ", "Vss", "Rss", "Pss", "Uss");
-        if (has_swap) {
-            ss << ::android::base::StringPrintf("%7s  %7s  %7s  ", "Swap", "PSwap", "USwap");
-            if (has_zram) {
-                ss << ::android::base::StringPrintf("%7s  ", "ZSwap");
-            }
-        }
-    }
-
-    ss << "cmdline";
-}
-
-static void print_process_record(std::stringstream& ss, ProcessRecord& proc) {
-    ss << ::android::base::StringPrintf("%5d  ", proc.pid());
-    if (show_oomadj) {
-        ss << ::android::base::StringPrintf("%5d  ", proc.oomadj());
-    }
-
-    if (show_wss) {
-        ss << ::android::base::StringPrintf("%6" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64 "K  ",
-                                            proc.Wss().rss / 1024, proc.Wss().pss / 1024,
-                                            proc.Wss().uss / 1024);
-    } else {
-        ss << ::android::base::StringPrintf("%7" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64 "K  %6" PRIu64
-                                            "K  ",
-                                            proc.Usage().vss / 1024, proc.Usage().rss / 1024,
-                                            proc.Usage().pss / 1024, proc.Usage().uss / 1024);
-        if (has_swap) {
-            ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", proc.Usage().swap / 1024);
-            ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", proc.proportional_swap() / 1024);
-            ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", proc.unique_swap() / 1024);
-            if (has_zram) {
-                ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", (proc.zswap() / 1024));
-            }
-        }
-    }
-}
-
-static void print_processes(std::stringstream& ss, std::vector<ProcessRecord>& procs,
-                            uint16_t* swap_offset_array) {
-    for (auto& proc : procs) {
-        total_pss += show_wss ? proc.Wss().pss : proc.Usage().pss;
-        total_uss += show_wss ? proc.Wss().uss : proc.Usage().uss;
-        if (!show_wss && has_swap) {
-            proc.CalculateSwap(swap_offset_array, zram_compression_ratio);
-            total_swap += proc.Usage().swap;
-            total_pswap += proc.proportional_swap();
-            total_uswap += proc.unique_swap();
-            if (has_zram) {
-                total_zswap += proc.zswap();
-            }
-        }
-
-        print_process_record(ss, proc);
-        ss << proc.cmdline() << std::endl;
-    }
-}
-
-static void print_separator(std::stringstream& ss) {
-    ss << ::android::base::StringPrintf("%5s  ", "");
-    if (show_oomadj) {
-        ss << ::android::base::StringPrintf("%5s  ", "");
-    }
-
-    if (show_wss) {
-        ss << ::android::base::StringPrintf("%7s  %7s  %7s  ", "", "------", "------");
-    } else {
-        ss << ::android::base::StringPrintf("%8s  %7s  %7s  %7s  ", "", "", "------", "------");
-        if (has_swap) {
-            ss << ::android::base::StringPrintf("%7s  %7s  %7s  ", "------", "------", "------");
-            if (has_zram) {
-                ss << ::android::base::StringPrintf("%7s  ", "------");
-            }
-        }
-    }
-
-    ss << ::android::base::StringPrintf("%s", "------");
-}
-
-static void print_totals(std::stringstream& ss) {
-    ss << ::android::base::StringPrintf("%5s  ", "");
-    if (show_oomadj) {
-        ss << ::android::base::StringPrintf("%5s  ", "");
-    }
-
-    if (show_wss) {
-        ss << ::android::base::StringPrintf("%7s  %6" PRIu64 "K  %6" PRIu64 "K  ", "",
-                                            total_pss / 1024, total_uss / 1024);
-    } else {
-        ss << ::android::base::StringPrintf("%8s  %7s  %6" PRIu64 "K  %6" PRIu64 "K  ", "", "",
-                                            total_pss / 1024, total_uss / 1024);
-        if (has_swap) {
-            ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", total_swap / 1024);
-            ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", total_pswap / 1024);
-            ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", total_uswap / 1024);
-            if (has_zram) {
-                ss << ::android::base::StringPrintf("%6" PRIu64 "K  ", total_zswap / 1024);
-            }
-        }
-    }
-    ss << "TOTAL";
-}
-
-static void print_sysmeminfo(std::stringstream& ss, ::android::meminfo::SysMemInfo& smi) {
-    if (has_swap) {
-        ss << ::android::base::StringPrintf("ZRAM: %" PRIu64 "K physical used for %" PRIu64
-                                            "K in swap "
-                                            "(%" PRIu64 "K total swap)",
-                                            smi.mem_zram_kb(),
-                                            (smi.mem_swap_kb() - smi.mem_swap_free_kb()),
-                                            smi.mem_swap_kb())
-           << std::endl;
-    }
-
-    ss << ::android::base::StringPrintf(" RAM: %" PRIu64 "K total, %" PRIu64 "K free, %" PRIu64
-                                        "K buffers, "
-                                        "%" PRIu64 "K cached, %" PRIu64 "K shmem, %" PRIu64
-                                        "K slab",
-                                        smi.mem_total_kb(), smi.mem_free_kb(), smi.mem_buffers_kb(),
-                                        smi.mem_cached_kb(), smi.mem_shmem_kb(), smi.mem_slab_kb());
-}
-
-int main(int argc, char* argv[]) {
-    auto pss_sort = [](ProcessRecord& a, ProcessRecord& b) {
-        MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
-        MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
-        return reverse_sort ? stats_a.pss < stats_b.pss : stats_a.pss > stats_b.pss;
-    };
-
-    auto uss_sort = [](ProcessRecord& a, ProcessRecord& b) {
-        MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
-        MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
-        return reverse_sort ? stats_a.uss < stats_b.uss : stats_a.uss > stats_b.uss;
-    };
-
-    auto rss_sort = [](ProcessRecord& a, ProcessRecord& b) {
-        MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
-        MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
-        return reverse_sort ? stats_a.rss < stats_b.rss : stats_a.rss > stats_b.rss;
-    };
-
-    auto vss_sort = [](ProcessRecord& a, ProcessRecord& b) {
-        MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
-        MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
-        return reverse_sort ? stats_a.vss < stats_b.vss : stats_a.vss > stats_b.vss;
-    };
-
-    auto swap_sort = [](ProcessRecord& a, ProcessRecord& b) {
-        MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
-        MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
-        return reverse_sort ? stats_a.swap < stats_b.swap : stats_a.swap > stats_b.swap;
-    };
-
-    auto oomadj_sort = [](ProcessRecord& a, ProcessRecord& b) {
-        return reverse_sort ? a.oomadj() < b.oomadj() : a.oomadj() > b.oomadj();
-    };
-
-    // default PSS sort
-    std::function<bool(ProcessRecord & a, ProcessRecord & b)> proc_sort = pss_sort;
-
-    // count all pages by default
-    uint64_t pgflags = 0;
-    uint64_t pgflags_mask = 0;
-
-    int opt;
-    while ((opt = getopt(argc, argv, "cChkoprRsuvwW")) != -1) {
-        switch (opt) {
-            case 'c':
-                pgflags = 0;
-                pgflags_mask = (1 << KPF_SWAPBACKED);
-                break;
-            case 'C':
-                pgflags = (1 << KPF_SWAPBACKED);
-                pgflags_mask = (1 << KPF_SWAPBACKED);
-                break;
-            case 'h':
-                usage(EXIT_SUCCESS);
-            case 'k':
-                pgflags = (1 << KPF_KSM);
-                pgflags_mask = (1 << KPF_KSM);
-                break;
-            case 'o':
-                proc_sort = oomadj_sort;
-                show_oomadj = true;
-                break;
-            case 'p':
-                proc_sort = pss_sort;
-                break;
-            case 'r':
-                proc_sort = rss_sort;
-                break;
-            case 'R':
-                reverse_sort = true;
-                break;
-            case 's':
-                proc_sort = swap_sort;
-                break;
-            case 'u':
-                proc_sort = uss_sort;
-                break;
-            case 'v':
-                proc_sort = vss_sort;
-                break;
-            case 'w':
-                show_wss = true;
-                break;
-            case 'W':
-                reset_wss = true;
-                break;
-            default:
-                usage(EXIT_FAILURE);
-        }
-    }
-
-    std::vector<pid_t> pids;
-    std::vector<ProcessRecord> procs;
-    if (reset_wss) {
-        if (!read_all_pids(&pids,
-                           [&](pid_t pid) -> bool { return ProcMemInfo::ResetWorkingSet(pid); })) {
-            std::cerr << "Failed to reset working set of all processes" << std::endl;
-            exit(EXIT_FAILURE);
-        }
-        // we are done, all other options passed to procrank are ignored in the presence of '-W'
-        return 0;
-    }
-
-    ::android::meminfo::SysMemInfo smi;
-    if (!smi.ReadMemInfo()) {
-        std::cerr << "Failed to get system memory info" << std::endl;
-        exit(EXIT_FAILURE);
-    }
-
-    // Figure out swap and zram
-    uint64_t swap_total = smi.mem_swap_kb() * 1024;
-    has_swap = swap_total > 0;
-    // Allocate the swap array
-    auto swap_offset_array = std::make_unique<uint16_t[]>(swap_total / getpagesize());
-    if (has_swap) {
-        has_zram = smi.mem_zram_kb() > 0;
-        if (has_zram) {
-            zram_compression_ratio = static_cast<float>(smi.mem_zram_kb()) /
-                                     (smi.mem_swap_kb() - smi.mem_swap_free_kb());
-        }
-    }
-
-    auto mark_swap_usage = [&](pid_t pid) -> bool {
-        ProcessRecord proc(pid, show_wss, pgflags, pgflags_mask);
-        if (!proc.valid()) {
-            // Check to see if the process is still around, skip the process if the proc
-            // directory is inaccessible. It was most likely killed while creating the process
-            // record
-            std::string procdir = ::android::base::StringPrintf("/proc/%d", pid);
-            if (access(procdir.c_str(), F_OK | R_OK)) return true;
-
-            // Warn if we failed to gather process stats even while it is still alive.
-            // Return success here, so we continue to print stats for other processes.
-            std::cerr << "warning: failed to create process record for: " << pid << std::endl;
-            return true;
-        }
-
-        // Skip processes with no memory mappings
-        uint64_t vss = show_wss ? proc.Wss().vss : proc.Usage().vss;
-        if (vss == 0) return true;
-
-        // collect swap_offset counts from all processes in 1st pass
-        if (!show_wss && has_swap &&
-            !count_swap_offsets(proc, swap_offset_array.get(), swap_total / getpagesize())) {
-            std::cerr << "Failed to count swap offsets for process: " << pid << std::endl;
-            return false;
-        }
-
-        procs.emplace_back(std::move(proc));
-        return true;
-    };
-
-    // Get a list of all pids currently running in the system in 1st pass through all processes.
-    // Mark each swap offset used by the process as we find them for calculating proportional
-    // swap usage later.
-    if (!read_all_pids(&pids, mark_swap_usage)) {
-        std::cerr << "Failed to read all pids from the system" << std::endl;
-        exit(EXIT_FAILURE);
-    }
-
-    std::stringstream ss;
-    if (procs.empty()) {
-        // This would happen in corner cases where procrank is being run to find KSM usage on a
-        // system with no KSM and combined with working set determination as follows
-        //   procrank -w -u -k
-        //   procrank -w -s -k
-        //   procrank -w -o -k
-        ss << "<empty>" << std::endl << std::endl;
-        print_sysmeminfo(ss, smi);
-        ss << std::endl;
-        std::cout << ss.str();
-        return 0;
-    }
-
-    // Sort all process records, default is PSS descending
-    std::sort(procs.begin(), procs.end(), proc_sort);
-
-    // start dumping output in string stream
-    print_header(ss);
-    ss << std::endl;
-
-    // 2nd pass to calculate and get per process stats to add them up
-    print_processes(ss, procs, swap_offset_array.get());
-
-    // Add separator to output
-    print_separator(ss);
-    ss << std::endl;
-
-    // Add totals to output
-    print_totals(ss);
-    ss << std::endl << std::endl;
-
-    // Add system information at the end
-    print_sysmeminfo(ss, smi);
-    ss << std::endl;
-
-    // dump on the screen
-    std::cout << ss.str();
-
-    return 0;
-}
diff --git a/libmeminfo/tools/showmap.cpp b/libmeminfo/tools/showmap.cpp
deleted file mode 100644
index a80fa76..0000000
--- a/libmeminfo/tools/showmap.cpp
+++ /dev/null
@@ -1,265 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <getopt.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <meminfo/procmeminfo.h>
-
-using ::android::meminfo::Vma;
-
-struct VmaInfo {
-    Vma vma;
-    bool is_bss;
-    uint32_t count;
-
-    VmaInfo() = default;
-    VmaInfo(const Vma& v) : vma(v), is_bss(false), count(1) {}
-    VmaInfo(const Vma& v, bool bss) : vma(v), is_bss(bss), count(1) {}
-    VmaInfo(const Vma& v, const std::string& name, bool bss) : vma(v), is_bss(bss), count(1) {
-        vma.name = name;
-    }
-};
-
-// Global options
-static std::string g_filename = "";
-static bool g_merge_by_names = false;
-static bool g_terse = false;
-static bool g_verbose = false;
-static bool g_show_addr = false;
-static bool g_quiet = false;
-static pid_t g_pid = -1;
-
-static VmaInfo g_total;
-static std::vector<VmaInfo> g_vmas;
-
-[[noreturn]] static void usage(int exit_status) {
-    fprintf(stderr,
-            "%s [-aqtv] [-f FILE] PID\n"
-            "-a\taddresses (show virtual memory map)\n"
-            "-q\tquiet (don't show error if map could not be read)\n"
-            "-t\tterse (show only items with private pages)\n"
-            "-v\tverbose (don't coalesce maps with the same name)\n"
-            "-f\tFILE (read from input from FILE instead of PID)\n",
-            getprogname());
-
-    exit(exit_status);
-}
-
-static bool is_library(const std::string& name) {
-    return (name.size() > 4) && (name[0] == '/') && ::android::base::EndsWith(name, ".so");
-}
-
-static bool insert_before(const VmaInfo& a, const VmaInfo& b) {
-    if (g_show_addr) {
-        return (a.vma.start < b.vma.start || (a.vma.start == b.vma.start && a.vma.end < b.vma.end));
-    }
-
-    return strcmp(a.vma.name.c_str(), b.vma.name.c_str()) < 0;
-}
-
-static void collect_vma(const Vma& vma) {
-    if (g_vmas.empty()) {
-        g_vmas.emplace_back(vma);
-        return;
-    }
-
-    VmaInfo current(vma);
-    VmaInfo& last = g_vmas.back();
-    // determine if this is bss;
-    if (vma.name.empty()) {
-        if (last.vma.end == current.vma.start && is_library(last.vma.name)) {
-            current.vma.name = last.vma.name;
-            current.is_bss = true;
-        } else {
-            current.vma.name = "[anon]";
-        }
-    }
-
-    std::vector<VmaInfo>::iterator it;
-    for (it = g_vmas.begin(); it != g_vmas.end(); it++) {
-        if (g_merge_by_names && (it->vma.name == current.vma.name)) {
-            it->vma.usage.vss += current.vma.usage.vss;
-            it->vma.usage.rss += current.vma.usage.rss;
-            it->vma.usage.pss += current.vma.usage.pss;
-
-            it->vma.usage.shared_clean += current.vma.usage.shared_clean;
-            it->vma.usage.shared_dirty += current.vma.usage.shared_dirty;
-            it->vma.usage.private_clean += current.vma.usage.private_clean;
-            it->vma.usage.private_dirty += current.vma.usage.private_dirty;
-            it->vma.usage.swap += current.vma.usage.swap;
-            it->vma.usage.swap_pss += current.vma.usage.swap_pss;
-            it->is_bss &= current.is_bss;
-            it->count++;
-            break;
-        }
-
-        if (insert_before(current, *it)) {
-            g_vmas.insert(it, current);
-            break;
-        }
-    }
-
-    if (it == g_vmas.end()) {
-        g_vmas.emplace_back(current);
-    }
-}
-
-static void print_header() {
-    const char* addr1 = g_show_addr ? "           start              end " : "";
-    const char* addr2 = g_show_addr ? "            addr             addr " : "";
-
-    printf("%s virtual                     shared   shared  private  private\n", addr1);
-    printf("%s    size      RSS      PSS    clean    dirty    clean    dirty     swap  swapPSS",
-           addr2);
-    if (!g_verbose && !g_show_addr) {
-        printf("   # ");
-    }
-    printf(" object\n");
-}
-
-static void print_divider() {
-    if (g_show_addr) {
-        printf("-------- -------- ");
-    }
-    printf("-------- -------- -------- -------- -------- -------- -------- -------- -------- ");
-    if (!g_verbose && !g_show_addr) {
-        printf("---- ");
-    }
-    printf("------------------------------\n");
-}
-
-static void print_vmainfo(const VmaInfo& v, bool total) {
-    if (g_show_addr) {
-        if (total) {
-            printf("                                  ");
-        } else {
-            printf("%16" PRIx64 " %16" PRIx64 " ", v.vma.start, v.vma.end);
-        }
-    }
-    printf("%8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64 " %8" PRIu64
-           " %8" PRIu64 " %8" PRIu64 " ",
-           v.vma.usage.vss, v.vma.usage.rss, v.vma.usage.pss, v.vma.usage.shared_clean,
-           v.vma.usage.shared_dirty, v.vma.usage.private_clean, v.vma.usage.private_dirty,
-           v.vma.usage.swap, v.vma.usage.swap_pss);
-    if (!g_verbose && !g_show_addr) {
-        printf("%4" PRIu32 " ", v.count);
-    }
-}
-
-static int showmap(void) {
-    if (!::android::meminfo::ForEachVmaFromFile(g_filename, collect_vma)) {
-        if (!g_quiet) {
-            fprintf(stderr, "Failed to parse file %s\n", g_filename.c_str());
-        }
-        return 1;
-    }
-
-    print_header();
-    print_divider();
-
-    for (const auto& v : g_vmas) {
-        g_total.vma.usage.vss += v.vma.usage.vss;
-        g_total.vma.usage.rss += v.vma.usage.rss;
-        g_total.vma.usage.pss += v.vma.usage.pss;
-
-        g_total.vma.usage.private_clean += v.vma.usage.private_clean;
-        g_total.vma.usage.private_dirty += v.vma.usage.private_dirty;
-        g_total.vma.usage.shared_clean += v.vma.usage.shared_clean;
-        g_total.vma.usage.shared_dirty += v.vma.usage.shared_dirty;
-
-        g_total.vma.usage.swap += v.vma.usage.swap;
-        g_total.vma.usage.swap_pss += v.vma.usage.swap_pss;
-        g_total.count += v.count;
-
-        if (g_terse && !(v.vma.usage.private_dirty || v.vma.usage.private_clean)) {
-            continue;
-        }
-
-        print_vmainfo(v, false);
-        printf("%s%s\n", v.vma.name.c_str(), v.is_bss ? " [bss]" : "");
-    }
-
-    print_divider();
-    print_header();
-    print_divider();
-
-    print_vmainfo(g_total, true);
-    printf("TOTAL\n");
-
-    return 0;
-}
-
-int main(int argc, char* argv[]) {
-    signal(SIGPIPE, SIG_IGN);
-    struct option longopts[] = {
-            {"help", no_argument, nullptr, 'h'},
-            {0, 0, nullptr, 0},
-    };
-
-    int opt;
-    while ((opt = getopt_long(argc, argv, "tvaqf:h", longopts, nullptr)) != -1) {
-        switch (opt) {
-            case 't':
-                g_terse = true;
-                break;
-            case 'a':
-                g_show_addr = true;
-                break;
-            case 'v':
-                g_verbose = true;
-                break;
-            case 'q':
-                g_quiet = true;
-                break;
-            case 'f':
-                g_filename = optarg;
-                break;
-            case 'h':
-                usage(EXIT_SUCCESS);
-            default:
-                usage(EXIT_FAILURE);
-        }
-    }
-
-    if (g_filename.empty()) {
-        if ((argc - 1) < optind) {
-            fprintf(stderr, "Invalid arguments: Must provide <pid> at the end\n");
-            usage(EXIT_FAILURE);
-        }
-
-        g_pid = atoi(argv[optind]);
-        if (g_pid <= 0) {
-            fprintf(stderr, "Invalid process id %s\n", argv[optind]);
-            usage(EXIT_FAILURE);
-        }
-
-        g_filename = ::android::base::StringPrintf("/proc/%d/smaps", g_pid);
-    }
-
-    g_merge_by_names = !g_verbose && !g_show_addr;
-    return showmap();
-}
diff --git a/libmeminfo/tools/wsstop.cpp b/libmeminfo/tools/wsstop.cpp
deleted file mode 100644
index 368d04e..0000000
--- a/libmeminfo/tools/wsstop.cpp
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <getopt.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <algorithm>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <meminfo/pageacct.h>
-#include <meminfo/procmeminfo.h>
-
-using ::android::meminfo::ProcMemInfo;
-using ::android::meminfo::Vma;
-
-// Global options
-static int32_t g_delay = 0;
-static int32_t g_total = 2;
-static pid_t g_pid = -1;
-
-[[noreturn]] static void usage(int exit_status) {
-    fprintf(stderr,
-            "%s [-d DELAY_BETWEEN_EACH_SAMPLE] [-n REFRESH_TOTAL] PID\n"
-            "-d\tdelay between each working set sample (default 0)\n"
-            "-n\ttotal number of refreshes before we exit (default 2)\n",
-            getprogname());
-
-    exit(exit_status);
-}
-
-static void print_header() {
-    const char* addr1 = "           start              end ";
-    const char* addr2 = "            addr             addr ";
-
-    printf("%s  virtual                        shared    shared   private   private\n", addr1);
-    printf("%s     size       RSS       PSS     clean     dirty     clean     dirty      swap   "
-           "swapPSS",
-           addr2);
-    printf(" object\n");
-}
-
-static void print_divider() {
-    printf("---------------- ---------------- ");
-    printf("--------- --------- --------- --------- --------- --------- --------- --------- "
-           "--------- ");
-    printf("------------------------------\n");
-}
-
-static void print_vma(const Vma& v) {
-    printf("%16" PRIx64 " %16" PRIx64 " ", v.start, v.end);
-    printf("%8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64
-           "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K ",
-           v.usage.vss / 1024, v.usage.rss / 1024, v.usage.pss / 1024, v.usage.shared_clean / 1024,
-           v.usage.shared_dirty / 1024, v.usage.private_clean / 1024, v.usage.private_dirty / 1024,
-           v.usage.swap / 1024, v.usage.swap_pss / 1024);
-    printf("%s\n", v.name.c_str());
-}
-
-static bool same_vma(const Vma& cur, const Vma& last) {
-    return (cur.start == last.start && cur.end == last.end && cur.name == last.name &&
-            cur.flags == last.flags && cur.offset == last.offset);
-}
-
-static Vma diff_vma_params(const Vma& cur, const Vma& last) {
-    Vma res;
-    res.usage.shared_clean = cur.usage.shared_clean > last.usage.shared_clean
-                                     ? cur.usage.shared_clean - last.usage.shared_clean
-                                     : 0;
-    res.usage.shared_dirty = cur.usage.shared_dirty > last.usage.shared_dirty
-                                     ? cur.usage.shared_dirty - last.usage.shared_dirty
-                                     : 0;
-    res.usage.private_clean = cur.usage.private_clean > last.usage.private_clean
-                                      ? cur.usage.private_clean - last.usage.private_clean
-                                      : 0;
-    res.usage.private_dirty = cur.usage.private_dirty > last.usage.private_dirty
-                                      ? cur.usage.private_dirty - last.usage.private_dirty
-                                      : 0;
-
-    res.usage.rss = cur.usage.rss > last.usage.rss ? cur.usage.rss - last.usage.rss : 0;
-    res.usage.pss = cur.usage.pss > last.usage.pss ? cur.usage.pss - last.usage.pss : 0;
-    res.usage.uss = cur.usage.uss > last.usage.uss ? cur.usage.uss - last.usage.uss : 0;
-    res.usage.swap = cur.usage.swap > last.usage.swap ? cur.usage.swap - last.usage.swap : 0;
-    res.usage.swap_pss =
-            cur.usage.swap_pss > last.usage.swap_pss ? cur.usage.swap_pss - last.usage.swap_pss : 0;
-
-    // set vma properties to the same as the current one.
-    res.start = cur.start;
-    res.end = cur.end;
-    res.offset = cur.offset;
-    res.flags = cur.flags;
-    res.name = cur.name;
-    return res;
-}
-
-static void diff_workingset(std::vector<Vma>& wss, std::vector<Vma>& old, std::vector<Vma>* res) {
-    res->clear();
-    auto vma_sorter = [](const Vma& a, const Vma& b) { return a.start < b.start; };
-    std::sort(wss.begin(), wss.end(), vma_sorter);
-    std::sort(old.begin(), old.end(), vma_sorter);
-    if (old.empty()) {
-        *res = wss;
-        return;
-    }
-
-    for (auto& i : wss) {
-        bool found_same_vma = false;
-        // TODO: This is highly inefficient, fix it if it takes
-        // too long. Worst case will be system_server
-        for (auto& j : old) {
-            if (same_vma(i, j)) {
-                res->emplace_back(diff_vma_params(i, j));
-                found_same_vma = true;
-                break;
-            }
-        }
-
-        if (!found_same_vma) {
-            res->emplace_back(i);
-        }
-    }
-
-    std::sort(res->begin(), res->end(), vma_sorter);
-    return;
-}
-
-static int workingset() {
-    std::vector<Vma> last_wss = {};
-    std::vector<Vma> diff_wss = {};
-    uint32_t nr_refresh = 0;
-
-    while (true) {
-        std::unique_ptr<ProcMemInfo> proc_mem = std::make_unique<ProcMemInfo>(g_pid, true);
-        std::vector<Vma> wss = proc_mem->MapsWithPageIdle();
-
-        diff_workingset(wss, last_wss, &diff_wss);
-        diff_wss.erase(std::remove_if(diff_wss.begin(), diff_wss.end(),
-                                      [](const auto& v) { return v.usage.rss == 0; }),
-                       diff_wss.end());
-        if ((nr_refresh % 5) == 0) {
-            print_header();
-            print_divider();
-        }
-
-        for (const auto& v : diff_wss) {
-            print_vma(v);
-        }
-
-        nr_refresh++;
-        if (nr_refresh == g_total) {
-            break;
-        }
-
-        last_wss = wss;
-        sleep(g_delay);
-        print_divider();
-    }
-
-    return 0;
-}
-
-int main(int argc, char* argv[]) {
-    struct option longopts[] = {
-            {"help", no_argument, nullptr, 'h'},
-            {0, 0, nullptr, 0},
-    };
-
-    int opt;
-    while ((opt = getopt_long(argc, argv, "d:n:h", longopts, nullptr)) != -1) {
-        switch (opt) {
-            case 'd':
-                g_delay = atoi(optarg);
-                break;
-            case 'n':
-                g_total = atoi(optarg);
-                break;
-            case 'h':
-                usage(EXIT_SUCCESS);
-            default:
-                usage(EXIT_FAILURE);
-        }
-    }
-
-    if ((argc - 1) < optind) {
-        fprintf(stderr, "Invalid arguments: Must provide <pid> at the end\n");
-        usage(EXIT_FAILURE);
-    }
-
-    g_pid = atoi(argv[optind]);
-    if (g_pid <= 0) {
-        fprintf(stderr, "Invalid process id %s\n", argv[optind]);
-        usage(EXIT_FAILURE);
-    }
-
-    if (!::android::meminfo::PageAcct::KernelHasPageIdle()) {
-        fprintf(stderr, "Missing support for Idle page tracking in the kernel\n");
-        return 0;
-    }
-
-    return workingset();
-}
diff --git a/libmeminfo/vts/Android.bp b/libmeminfo/vts/Android.bp
deleted file mode 100644
index 5a3a23b..0000000
--- a/libmeminfo/vts/Android.bp
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright (C) 2019 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-cc_test {
-    name: "vts_meminfo_test",
-    defaults: ["libmeminfo_defaults"],
-    srcs: ["vts_meminfo_test.cpp"],
-    static_libs: ["libmeminfo"],
-}
diff --git a/libmeminfo/vts/Android.mk b/libmeminfo/vts/Android.mk
deleted file mode 100644
index 62d68d9..0000000
--- a/libmeminfo/vts/Android.mk
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# Copyright (C) 2019 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := VtsKernelMemInfoTest
--include test/vts/tools/build/Android.host_config.mk
diff --git a/libmeminfo/vts/AndroidTest.xml b/libmeminfo/vts/AndroidTest.xml
deleted file mode 100644
index 9614025..0000000
--- a/libmeminfo/vts/AndroidTest.xml
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2019 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<configuration description="Config for VTS VtsKernelMemInfoTest.">
-    <option name="config-descriptor:metadata" key="plan" value="vts-kernel" />
-    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.VtsFilePusher">
-        <option name="abort-on-push-failure" value="false"/>
-        <option name="push-group" value="HostDrivenTest.push"/>
-    </target_preparer>
-    <test class="com.android.tradefed.testtype.VtsMultiDeviceTest">
-        <option name="test-module-name" value="VtsKernelMemInfoTest"/>
-        <option name="binary-test-source" value="_32bit::DATA/nativetest/vts_meminfo_test/vts_meminfo_test" />
-        <option name="binary-test-source" value="_64bit::DATA/nativetest64/vts_meminfo_test/vts_meminfo_test" />
-        <option name="binary-test-type" value="gtest"/>
-        <option name="precondition-first-api-level" value="29" />
-        <option name="test-timeout" value="10m"/>
-    </test>
-</configuration>
diff --git a/libmeminfo/vts/vts_meminfo_test.cpp b/libmeminfo/vts/vts_meminfo_test.cpp
deleted file mode 100644
index 3193c31..0000000
--- a/libmeminfo/vts/vts_meminfo_test.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gtest/gtest.h>
-
-#include <meminfo/procmeminfo.h>
-
-namespace android {
-namespace meminfo {
-
-// /proc/<pid>/smaps_rollup support is required.
-TEST(SmapsRollup, IsSupported) {
-    // Use init's pid for this test since it's the only known pid.
-    ASSERT_TRUE(IsSmapsRollupSupported(1));
-}
-
-}  // namespace meminfo
-}  // namespace android
diff --git a/libmemtrack/.clang-format b/libmemtrack/.clang-format
deleted file mode 120000
index 1af4f51..0000000
--- a/libmemtrack/.clang-format
+++ /dev/null
@@ -1 +0,0 @@
-../.clang-format-4
\ No newline at end of file
diff --git a/libmemtrack/Android.bp b/libmemtrack/Android.bp
deleted file mode 100644
index 4e4554a..0000000
--- a/libmemtrack/Android.bp
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright 2013 The Android Open Source Project
-
-cc_library_shared {
-    name: "libmemtrack",
-    vendor_available: true,
-    vndk: {
-        enabled: true,
-    },
-    srcs: ["memtrack.cpp"],
-    export_include_dirs: ["include"],
-    local_include_dirs: ["include"],
-    include_dirs: ["hardware/libhardware/include"],
-    shared_libs: [
-        "libhardware",
-        "liblog",
-        "libbase",
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-        "android.hardware.memtrack@1.0",
-    ],
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-}
-
-cc_binary {
-    name: "memtrack_test",
-    srcs: ["memtrack_test.cpp"],
-    static_libs: ["libc++fs"],
-    shared_libs: [
-        "libbase",
-        "libmemtrack",
-    ],
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-}
diff --git a/libmemtrack/OWNERS b/libmemtrack/OWNERS
deleted file mode 100644
index 70b375f..0000000
--- a/libmemtrack/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-ccross@google.com
diff --git a/libmemtrack/include/memtrack/memtrack.h b/libmemtrack/include/memtrack/memtrack.h
deleted file mode 100644
index 2134a6f..0000000
--- a/libmemtrack/include/memtrack/memtrack.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _LIBMEMTRACK_MEMTRACK_H_
-#define _LIBMEMTRACK_MEMTRACK_H_
-
-#include <sys/types.h>
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * struct memtrack_proc
- *
- * an opaque handle to the memory stats on a process.
- * Created with memtrack_proc_new, destroyed by
- * memtrack_proc_destroy.  Can be reused multiple times with
- * memtrack_proc_get.
- */
-struct memtrack_proc;
-
-/**
- * memtrack_proc_new
- *
- * Return a new handle to hold process memory stats.
- *
- * Returns NULL on error.
- */
-struct memtrack_proc *memtrack_proc_new(void);
-
-/**
- * memtrack_proc_destroy
- *
- * Free all memory associated with a process memory stats handle.
- */
-void memtrack_proc_destroy(struct memtrack_proc *p);
-
-/**
- * memtrack_proc_get
- *
- * Fill a process memory stats handle with data about the given pid.  Can be
- * called on a handle that was just allocated with memtrack_proc_new,
- * or on a handle that has been previously passed to memtrack_proc_get
- * to replace the data with new data on the same or another process.  It is
- * expected that the second call on the same handle should not require
- * allocating any new memory.
- *
- * Returns 0 on success, -errno on error.
- */
-int memtrack_proc_get(struct memtrack_proc *p, pid_t pid);
-
-/**
- * memtrack_proc_graphics_total
- *
- * Return total amount of memory that has been allocated for use as window
- * buffers.  Does not differentiate between memory that has already been
- * accounted for by reading /proc/pid/smaps and memory that has not been
- * accounted for.
- *
- * Returns non-negative size in bytes on success, -errno on error.
- */
-ssize_t memtrack_proc_graphics_total(struct memtrack_proc *p);
-
-/**
- * memtrack_proc_graphics_pss
- *
- * Return total amount of memory that has been allocated for use as window
- * buffers, but has not already been accounted for by reading /proc/pid/smaps.
- * Memory that is shared across processes may already be divided by the
- * number of processes that share it (preferred), or may be charged in full to
- * every process that shares it, depending on the capabilities of the driver.
- *
- * Returns non-negative size in bytes on success, -errno on error.
- */
-ssize_t memtrack_proc_graphics_pss(struct memtrack_proc *p);
-
-/**
- * memtrack_proc_gl_total
- *
- * Same as memtrack_proc_graphics_total, but counts GL memory (which
- * should not overlap with graphics memory) instead of graphics memory.
- *
- * Returns non-negative size in bytes on success, -errno on error.
- */
-ssize_t memtrack_proc_gl_total(struct memtrack_proc *p);
-
-/**
- * memtrack_proc_gl_pss
- *
- * Same as memtrack_proc_graphics_total, but counts GL memory (which
- * should not overlap with graphics memory) instead of graphics memory.
- *
- * Returns non-negative size in bytes on success, -errno on error.
- */
-ssize_t memtrack_proc_gl_pss(struct memtrack_proc *p);
-
-/**
- * memtrack_proc_other_total
- *
- * Same as memtrack_proc_graphics_total, but counts miscellaneous memory
- * not tracked by gl or graphics calls above.
- *
- * Returns non-negative size in bytes on success, -errno on error.
- */
-ssize_t memtrack_proc_other_total(struct memtrack_proc *p);
-
-/**
- * memtrack_proc_other_pss
- *
- * Same as memtrack_proc_graphics_total, but counts miscellaneous memory
- * not tracked by gl or graphics calls above.
- *
- * Returns non-negative size in bytes on success, -errno on error.
- */
-ssize_t memtrack_proc_other_pss(struct memtrack_proc *p);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/libmemtrack/memtrack.cpp b/libmemtrack/memtrack.cpp
deleted file mode 100644
index c5e74c1..0000000
--- a/libmemtrack/memtrack.cpp
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#define LOG_TAG "memtrack"
-#include <android/hardware/memtrack/1.0/IMemtrack.h>
-#include <memtrack/memtrack.h>
-
-#include <errno.h>
-#include <malloc.h>
-#include <vector>
-#include <string.h>
-#include <mutex>
-
-#include <log/log.h>
-
-using android::hardware::memtrack::V1_0::IMemtrack;
-using android::hardware::memtrack::V1_0::MemtrackType;
-using android::hardware::memtrack::V1_0::MemtrackRecord;
-using android::hardware::memtrack::V1_0::MemtrackFlag;
-using android::hardware::memtrack::V1_0::MemtrackStatus;
-using android::hardware::hidl_vec;
-using android::hardware::Return;
-
-struct memtrack_proc_type {
-    MemtrackType type;
-    std::vector<MemtrackRecord> records;
-};
-
-struct memtrack_proc {
-    pid_t pid;
-    memtrack_proc_type types[static_cast<int>(MemtrackType::NUM_TYPES)];
-};
-
-//TODO(b/31632518)
-static android::sp<IMemtrack> get_instance() {
-    static android::sp<IMemtrack> module = IMemtrack::getService();
-    if (module == nullptr) {
-        ALOGE("Couldn't load memtrack module");
-    }
-    return module;
-}
-
-memtrack_proc *memtrack_proc_new(void)
-{
-    return new memtrack_proc();
-}
-
-void memtrack_proc_destroy(memtrack_proc *p)
-{
-    delete(p);
-}
-
-static int memtrack_proc_get_type(memtrack_proc_type *t,
-        pid_t pid, MemtrackType type)
-{
-    int err = 0;
-    android::sp<IMemtrack> memtrack = get_instance();
-    if (memtrack == nullptr)
-        return -1;
-
-    Return<void> ret = memtrack->getMemory(pid, type,
-        [&t, &err](MemtrackStatus status, hidl_vec<MemtrackRecord> records) {
-            if (status != MemtrackStatus::SUCCESS) {
-                err = -1;
-                t->records.resize(0);
-            }
-            t->records.resize(records.size());
-            for (size_t i = 0; i < records.size(); i++) {
-                t->records[i].sizeInBytes = records[i].sizeInBytes;
-                t->records[i].flags = records[i].flags;
-            }
-    });
-    return ret.isOk() ? err : -1;
-}
-
-/* TODO: sanity checks on return values from HALs:
- *   make sure no records have invalid flags set
- *    - unknown flags
- *    - too many flags of a single category
- *    - missing ACCOUNTED/UNACCOUNTED
- *   make sure there are not overlapping SHARED and SHARED_PSS records
- */
-static int memtrack_proc_sanity_check(memtrack_proc* /*p*/)
-{
-    return 0;
-}
-
-int memtrack_proc_get(memtrack_proc *p, pid_t pid)
-{
-    if (!p) {
-        return -EINVAL;
-    }
-
-    p->pid = pid;
-    for (uint32_t i = 0; i < (uint32_t)MemtrackType::NUM_TYPES; i++) {
-        int ret = memtrack_proc_get_type(&p->types[i], pid, (MemtrackType)i);
-        if (ret != 0)
-           return ret;
-    }
-
-    return memtrack_proc_sanity_check(p);
-}
-
-static ssize_t memtrack_proc_sum(memtrack_proc *p,
-        const std::vector<MemtrackType>& types, uint32_t flags)
-{
-    ssize_t sum = 0;
-
-    for (size_t i = 0; i < types.size(); i++) {
-        memtrack_proc_type type = p->types[static_cast<int>(types[i])];
-        std::vector<MemtrackRecord> records = type.records;
-        for (size_t j = 0; j < records.size(); j++) {
-            if ((records[j].flags & flags) == flags) {
-                sum += records[j].sizeInBytes;
-            }
-        }
-    }
-
-    return sum;
-}
-
-ssize_t memtrack_proc_graphics_total(memtrack_proc *p)
-{
-    std::vector<MemtrackType> types = {MemtrackType::GRAPHICS};
-    return memtrack_proc_sum(p, types, 0);
-}
-
-ssize_t memtrack_proc_graphics_pss(memtrack_proc *p)
-{
-    std::vector<MemtrackType> types = { MemtrackType::GRAPHICS };
-    return memtrack_proc_sum(p, types,
-            (uint32_t)MemtrackFlag::SMAPS_UNACCOUNTED);
-}
-
-ssize_t memtrack_proc_gl_total(memtrack_proc *p)
-{
-    std::vector<MemtrackType> types = { MemtrackType::GL };
-    return memtrack_proc_sum(p, types, 0);
-}
-
-ssize_t memtrack_proc_gl_pss(memtrack_proc *p)
-{
-    std::vector<MemtrackType> types = { MemtrackType::GL };
-    return memtrack_proc_sum(p, types,
-            (uint32_t)MemtrackFlag::SMAPS_UNACCOUNTED);
-}
-
-ssize_t memtrack_proc_other_total(memtrack_proc *p)
-{
-    std::vector<MemtrackType> types = { MemtrackType::MULTIMEDIA,
-            MemtrackType::CAMERA, MemtrackType::OTHER };
-    return memtrack_proc_sum(p, types, 0);
-}
-
-ssize_t memtrack_proc_other_pss(memtrack_proc *p)
-{
-    std::vector<MemtrackType> types = { MemtrackType::MULTIMEDIA,
-            MemtrackType::CAMERA, MemtrackType::OTHER };
-    return memtrack_proc_sum(p, types,
-            (uint32_t)MemtrackFlag::SMAPS_UNACCOUNTED);
-}
diff --git a/libmemtrack/memtrack_test.cpp b/libmemtrack/memtrack_test.cpp
deleted file mode 100644
index aeeaf24..0000000
--- a/libmemtrack/memtrack_test.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-
-#include <filesystem>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <memtrack/memtrack.h>
-
-#define DIV_ROUND_UP(x, y) (((x) + (y)-1) / (y))
-
-static void getprocname(pid_t pid, std::string* name) {
-    std::string fname = ::android::base::StringPrintf("/proc/%d/cmdline", pid);
-    if (!::android::base::ReadFileToString(fname, name)) {
-        fprintf(stderr, "Failed to read cmdline from: %s\n", fname.c_str());
-        *name = "<unknown>";
-    }
-}
-
-int main(int /* argc */, char** /* argv */) {
-    int ret;
-    struct memtrack_proc* p;
-    std::vector<pid_t> pids;
-
-    p = memtrack_proc_new();
-    if (p == nullptr) {
-        fprintf(stderr, "failed to create memtrack process handle\n");
-        exit(EXIT_FAILURE);
-    }
-
-    for (auto& de : std::filesystem::directory_iterator("/proc")) {
-        if (!std::filesystem::is_directory(de.status())) {
-            continue;
-        }
-
-        pid_t pid;
-        if (!::android::base::ParseInt(de.path().filename().string(), &pid)) {
-            continue;
-        }
-        pids.emplace_back(pid);
-    }
-
-    for (auto& pid : pids) {
-        size_t v1;
-        size_t v2;
-        size_t v3;
-        size_t v4;
-        size_t v5;
-        size_t v6;
-        std::string cmdline;
-
-        getprocname(pid, &cmdline);
-
-        ret = memtrack_proc_get(p, pid);
-        if (ret) {
-            fprintf(stderr, "failed to get memory info for pid %d: %s (%d)\n", pid, strerror(-ret),
-                    ret);
-            continue;
-        }
-
-        v1 = DIV_ROUND_UP(memtrack_proc_graphics_total(p), 1024);
-        v2 = DIV_ROUND_UP(memtrack_proc_graphics_pss(p), 1024);
-        v3 = DIV_ROUND_UP(memtrack_proc_gl_total(p), 1024);
-        v4 = DIV_ROUND_UP(memtrack_proc_gl_pss(p), 1024);
-        v5 = DIV_ROUND_UP(memtrack_proc_other_total(p), 1024);
-        v6 = DIV_ROUND_UP(memtrack_proc_other_pss(p), 1024);
-
-        if (v1 | v2 | v3 | v4 | v5 | v6) {
-            fprintf(stdout, "%5d %6zu %6zu %6zu %6zu %6zu %6zu %s\n", pid, v1, v2, v3, v4, v5, v6,
-                    cmdline.c_str());
-        }
-    }
-
-    memtrack_proc_destroy(p);
-
-    return ret;
-}
diff --git a/libmemunreachable/.clang-format b/libmemunreachable/.clang-format
deleted file mode 120000
index fd0645f..0000000
--- a/libmemunreachable/.clang-format
+++ /dev/null
@@ -1 +0,0 @@
-../.clang-format-2
\ No newline at end of file
diff --git a/libmemunreachable/Allocator.cpp b/libmemunreachable/Allocator.cpp
deleted file mode 100644
index 1eb7e98..0000000
--- a/libmemunreachable/Allocator.cpp
+++ /dev/null
@@ -1,468 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// Header page:
-//
-// For minimum allocation size (8 bytes), bitmap can store used allocations for
-// up to 4032*8*8=258048, which is 256KiB minus the header page
-
-#include <assert.h>
-#include <stdlib.h>
-
-#include <sys/cdefs.h>
-#include <sys/mman.h>
-#include <sys/prctl.h>
-
-#include <cmath>
-#include <cstddef>
-#include <cstdint>
-#include <memory>
-#include <mutex>
-
-#include "android-base/macros.h"
-
-#include "Allocator.h"
-#include "LinkedList.h"
-
-namespace android {
-
-// runtime interfaces used:
-// abort
-// assert - fprintf + mmap
-// mmap
-// munmap
-// prctl
-
-constexpr size_t const_log2(size_t n, size_t p = 0) {
-  return (n <= 1) ? p : const_log2(n / 2, p + 1);
-}
-
-constexpr unsigned int div_round_up(unsigned int x, unsigned int y) {
-  return (x + y - 1) / y;
-}
-
-static constexpr size_t kPageSize = 4096;
-static constexpr size_t kChunkSize = 256 * 1024;
-static constexpr size_t kUsableChunkSize = kChunkSize - kPageSize;
-static constexpr size_t kMaxBucketAllocationSize = kChunkSize / 4;
-static constexpr size_t kMinBucketAllocationSize = 8;
-static constexpr unsigned int kNumBuckets =
-    const_log2(kMaxBucketAllocationSize) - const_log2(kMinBucketAllocationSize) + 1;
-static constexpr unsigned int kUsablePagesPerChunk = kUsableChunkSize / kPageSize;
-
-std::atomic<int> heap_count;
-
-class Chunk;
-
-class HeapImpl {
- public:
-  HeapImpl();
-  ~HeapImpl();
-  void* operator new(std::size_t count) noexcept;
-  void operator delete(void* ptr);
-
-  void* Alloc(size_t size);
-  void Free(void* ptr);
-  bool Empty();
-
-  void MoveToFullList(Chunk* chunk, int bucket_);
-  void MoveToFreeList(Chunk* chunk, int bucket_);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HeapImpl);
-
-  LinkedList<Chunk*> free_chunks_[kNumBuckets];
-  LinkedList<Chunk*> full_chunks_[kNumBuckets];
-
-  void MoveToList(Chunk* chunk, LinkedList<Chunk*>* head);
-  void* MapAlloc(size_t size);
-  void MapFree(void* ptr);
-  void* AllocLocked(size_t size);
-  void FreeLocked(void* ptr);
-
-  struct MapAllocation {
-    void* ptr;
-    size_t size;
-    MapAllocation* next;
-  };
-  MapAllocation* map_allocation_list_;
-  std::mutex m_;
-};
-
-// Integer log 2, rounds down
-static inline unsigned int log2(size_t n) {
-  return 8 * sizeof(unsigned long long) - __builtin_clzll(n) - 1;
-}
-
-static inline unsigned int size_to_bucket(size_t size) {
-  if (size < kMinBucketAllocationSize) return kMinBucketAllocationSize;
-  return log2(size - 1) + 1 - const_log2(kMinBucketAllocationSize);
-}
-
-static inline size_t bucket_to_size(unsigned int bucket) {
-  return kMinBucketAllocationSize << bucket;
-}
-
-static void* MapAligned(size_t size, size_t align) {
-  const int prot = PROT_READ | PROT_WRITE;
-  const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
-
-  size = (size + kPageSize - 1) & ~(kPageSize - 1);
-
-  // Over-allocate enough to align
-  size_t map_size = size + align - kPageSize;
-  if (map_size < size) {
-    return nullptr;
-  }
-
-  void* ptr = mmap(NULL, map_size, prot, flags, -1, 0);
-  if (ptr == MAP_FAILED) {
-    return nullptr;
-  }
-
-  size_t aligned_size = map_size;
-  void* aligned_ptr = ptr;
-
-  std::align(align, size, aligned_ptr, aligned_size);
-
-  // Trim beginning
-  if (aligned_ptr != ptr) {
-    ptrdiff_t extra = reinterpret_cast<uintptr_t>(aligned_ptr) - reinterpret_cast<uintptr_t>(ptr);
-    munmap(ptr, extra);
-    map_size -= extra;
-    ptr = aligned_ptr;
-  }
-
-  // Trim end
-  if (map_size != size) {
-    assert(map_size > size);
-    assert(ptr != NULL);
-    munmap(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(ptr) + size), map_size - size);
-  }
-
-#if defined(PR_SET_VMA)
-  prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, reinterpret_cast<uintptr_t>(ptr), size,
-        "leak_detector_malloc");
-#endif
-
-  return ptr;
-}
-
-class Chunk {
- public:
-  static void* operator new(std::size_t count) noexcept;
-  static void operator delete(void* ptr);
-  Chunk(HeapImpl* heap, int bucket);
-  ~Chunk() {}
-
-  void* Alloc();
-  void Free(void* ptr);
-  void Purge();
-  bool Empty();
-
-  static Chunk* ptr_to_chunk(void* ptr) {
-    return reinterpret_cast<Chunk*>(reinterpret_cast<uintptr_t>(ptr) & ~(kChunkSize - 1));
-  }
-  static bool is_chunk(void* ptr) {
-    return (reinterpret_cast<uintptr_t>(ptr) & (kChunkSize - 1)) != 0;
-  }
-
-  unsigned int free_count() { return free_count_; }
-  HeapImpl* heap() { return heap_; }
-  LinkedList<Chunk*> node_;  // linked list sorted by minimum free count
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Chunk);
-  HeapImpl* heap_;
-  unsigned int bucket_;
-  unsigned int allocation_size_;    // size of allocations in chunk, min 8 bytes
-  unsigned int max_allocations_;    // maximum number of allocations in the chunk
-  unsigned int first_free_bitmap_;  // index into bitmap for first non-full entry
-  unsigned int free_count_;         // number of available allocations
-  unsigned int frees_since_purge_;  // number of calls to Free since last Purge
-
-  // bitmap of pages that have been dirtied
-  uint32_t dirty_pages_[div_round_up(kUsablePagesPerChunk, 32)];
-
-  // bitmap of free allocations.
-  uint32_t free_bitmap_[kUsableChunkSize / kMinBucketAllocationSize / 32];
-
-  char data_[0];
-
-  unsigned int ptr_to_n(void* ptr) {
-    ptrdiff_t offset = reinterpret_cast<uintptr_t>(ptr) - reinterpret_cast<uintptr_t>(data_);
-    return offset / allocation_size_;
-  }
-  void* n_to_ptr(unsigned int n) { return data_ + n * allocation_size_; }
-};
-static_assert(sizeof(Chunk) <= kPageSize, "header must fit in page");
-
-// Override new operator on chunk to use mmap to allocate kChunkSize
-void* Chunk::operator new(std::size_t count __attribute__((unused))) noexcept {
-  assert(count == sizeof(Chunk));
-  void* mem = MapAligned(kChunkSize, kChunkSize);
-  if (!mem) {
-    abort();  // throw std::bad_alloc;
-  }
-
-  return mem;
-}
-
-// Override new operator on chunk to use mmap to allocate kChunkSize
-void Chunk::operator delete(void* ptr) {
-  assert(reinterpret_cast<Chunk*>(ptr) == ptr_to_chunk(ptr));
-  munmap(ptr, kChunkSize);
-}
-
-Chunk::Chunk(HeapImpl* heap, int bucket)
-    : node_(this),
-      heap_(heap),
-      bucket_(bucket),
-      allocation_size_(bucket_to_size(bucket)),
-      max_allocations_(kUsableChunkSize / allocation_size_),
-      first_free_bitmap_(0),
-      free_count_(max_allocations_),
-      frees_since_purge_(0) {
-  memset(dirty_pages_, 0, sizeof(dirty_pages_));
-  memset(free_bitmap_, 0xff, sizeof(free_bitmap_));
-}
-
-bool Chunk::Empty() {
-  return free_count_ == max_allocations_;
-}
-
-void* Chunk::Alloc() {
-  assert(free_count_ > 0);
-
-  unsigned int i = first_free_bitmap_;
-  while (free_bitmap_[i] == 0) i++;
-  assert(i < arraysize(free_bitmap_));
-  unsigned int bit = __builtin_ffs(free_bitmap_[i]) - 1;
-  assert(free_bitmap_[i] & (1U << bit));
-  free_bitmap_[i] &= ~(1U << bit);
-  unsigned int n = i * 32 + bit;
-  assert(n < max_allocations_);
-
-  unsigned int page = n * allocation_size_ / kPageSize;
-  assert(page / 32 < arraysize(dirty_pages_));
-  dirty_pages_[page / 32] |= 1U << (page % 32);
-
-  free_count_--;
-  if (free_count_ == 0) {
-    heap_->MoveToFullList(this, bucket_);
-  }
-
-  return n_to_ptr(n);
-}
-
-void Chunk::Free(void* ptr) {
-  assert(is_chunk(ptr));
-  assert(ptr_to_chunk(ptr) == this);
-
-  unsigned int n = ptr_to_n(ptr);
-  unsigned int i = n / 32;
-  unsigned int bit = n % 32;
-
-  assert(i < arraysize(free_bitmap_));
-  assert(!(free_bitmap_[i] & (1U << bit)));
-  free_bitmap_[i] |= 1U << bit;
-  free_count_++;
-
-  if (i < first_free_bitmap_) {
-    first_free_bitmap_ = i;
-  }
-
-  if (free_count_ == 1) {
-    heap_->MoveToFreeList(this, bucket_);
-  } else {
-    // TODO(ccross): move down free list if necessary
-  }
-
-  if (frees_since_purge_++ * allocation_size_ > 16 * kPageSize) {
-    Purge();
-  }
-}
-
-void Chunk::Purge() {
-  frees_since_purge_ = 0;
-
-  // unsigned int allocsPerPage = kPageSize / allocation_size_;
-}
-
-// Override new operator on HeapImpl to use mmap to allocate a page
-void* HeapImpl::operator new(std::size_t count __attribute__((unused))) noexcept {
-  assert(count == sizeof(HeapImpl));
-  void* mem = MapAligned(kPageSize, kPageSize);
-  if (!mem) {
-    abort();  // throw std::bad_alloc;
-  }
-
-  heap_count++;
-  return mem;
-}
-
-void HeapImpl::operator delete(void* ptr) {
-  munmap(ptr, kPageSize);
-}
-
-HeapImpl::HeapImpl() : free_chunks_(), full_chunks_(), map_allocation_list_(NULL) {}
-
-bool HeapImpl::Empty() {
-  for (unsigned int i = 0; i < kNumBuckets; i++) {
-    for (LinkedList<Chunk*>* it = free_chunks_[i].next(); it->data() != NULL; it = it->next()) {
-      if (!it->data()->Empty()) {
-        return false;
-      }
-    }
-    for (LinkedList<Chunk*>* it = full_chunks_[i].next(); it->data() != NULL; it = it->next()) {
-      if (!it->data()->Empty()) {
-        return false;
-      }
-    }
-  }
-
-  return true;
-}
-
-HeapImpl::~HeapImpl() {
-  for (unsigned int i = 0; i < kNumBuckets; i++) {
-    while (!free_chunks_[i].empty()) {
-      Chunk* chunk = free_chunks_[i].next()->data();
-      chunk->node_.remove();
-      delete chunk;
-    }
-    while (!full_chunks_[i].empty()) {
-      Chunk* chunk = full_chunks_[i].next()->data();
-      chunk->node_.remove();
-      delete chunk;
-    }
-  }
-}
-
-void* HeapImpl::Alloc(size_t size) {
-  std::lock_guard<std::mutex> lk(m_);
-  return AllocLocked(size);
-}
-
-void* HeapImpl::AllocLocked(size_t size) {
-  if (size > kMaxBucketAllocationSize) {
-    return MapAlloc(size);
-  }
-  int bucket = size_to_bucket(size);
-  if (free_chunks_[bucket].empty()) {
-    Chunk* chunk = new Chunk(this, bucket);
-    free_chunks_[bucket].insert(chunk->node_);
-  }
-  return free_chunks_[bucket].next()->data()->Alloc();
-}
-
-void HeapImpl::Free(void* ptr) {
-  std::lock_guard<std::mutex> lk(m_);
-  FreeLocked(ptr);
-}
-
-void HeapImpl::FreeLocked(void* ptr) {
-  if (!Chunk::is_chunk(ptr)) {
-    HeapImpl::MapFree(ptr);
-  } else {
-    Chunk* chunk = Chunk::ptr_to_chunk(ptr);
-    assert(chunk->heap() == this);
-    chunk->Free(ptr);
-  }
-}
-
-void* HeapImpl::MapAlloc(size_t size) {
-  size = (size + kPageSize - 1) & ~(kPageSize - 1);
-
-  MapAllocation* allocation = reinterpret_cast<MapAllocation*>(AllocLocked(sizeof(MapAllocation)));
-  void* ptr = MapAligned(size, kChunkSize);
-  if (!ptr) {
-    FreeLocked(allocation);
-    abort();  // throw std::bad_alloc;
-  }
-  allocation->ptr = ptr;
-  allocation->size = size;
-  allocation->next = map_allocation_list_;
-  map_allocation_list_ = allocation;
-
-  return ptr;
-}
-
-void HeapImpl::MapFree(void* ptr) {
-  MapAllocation** allocation = &map_allocation_list_;
-  while (*allocation && (*allocation)->ptr != ptr) allocation = &(*allocation)->next;
-
-  assert(*allocation != nullptr);
-
-  munmap((*allocation)->ptr, (*allocation)->size);
-  FreeLocked(*allocation);
-
-  *allocation = (*allocation)->next;
-}
-
-void HeapImpl::MoveToFreeList(Chunk* chunk, int bucket) {
-  MoveToList(chunk, &free_chunks_[bucket]);
-}
-
-void HeapImpl::MoveToFullList(Chunk* chunk, int bucket) {
-  MoveToList(chunk, &full_chunks_[bucket]);
-}
-
-void HeapImpl::MoveToList(Chunk* chunk, LinkedList<Chunk*>* head) {
-  // Remove from old list
-  chunk->node_.remove();
-
-  LinkedList<Chunk*>* node = head;
-  // Insert into new list, sorted by lowest free count
-  while (node->next() != head && node->data() != nullptr &&
-         node->data()->free_count() < chunk->free_count())
-    node = node->next();
-
-  node->insert(chunk->node_);
-}
-
-Heap::Heap() {
-  // HeapImpl overloads the operator new in order to mmap itself instead of
-  // allocating with new.
-  // Can't use a shared_ptr to store the result because shared_ptr needs to
-  // allocate, and Allocator<T> is still being constructed.
-  impl_ = new HeapImpl();
-  owns_impl_ = true;
-}
-
-Heap::~Heap() {
-  if (owns_impl_) {
-    delete impl_;
-  }
-}
-
-void* Heap::allocate(size_t size) {
-  return impl_->Alloc(size);
-}
-
-void Heap::deallocate(void* ptr) {
-  impl_->Free(ptr);
-}
-
-void Heap::deallocate(HeapImpl* impl, void* ptr) {
-  impl->Free(ptr);
-}
-
-bool Heap::empty() {
-  return impl_->Empty();
-}
-
-}  // namespace android
diff --git a/libmemunreachable/Allocator.h b/libmemunreachable/Allocator.h
deleted file mode 100644
index 837a12b..0000000
--- a/libmemunreachable/Allocator.h
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_ALLOCATOR_H_
-#define LIBMEMUNREACHABLE_ALLOCATOR_H_
-
-#include <atomic>
-#include <cstddef>
-#include <functional>
-#include <list>
-#include <map>
-#include <memory>
-#include <set>
-#include <unordered_map>
-#include <unordered_set>
-#include <vector>
-
-namespace android {
-
-extern std::atomic<int> heap_count;
-
-class HeapImpl;
-
-template <typename T>
-class Allocator;
-
-// Non-templated class that implements wraps HeapImpl to keep
-// implementation out of the header file
-class Heap {
- public:
-  Heap();
-  ~Heap();
-
-  // Copy constructor that does not take ownership of impl_
-  Heap(const Heap& other) : impl_(other.impl_), owns_impl_(false) {}
-
-  // Assignment disabled
-  Heap& operator=(const Heap&) = delete;
-
-  // Allocate size bytes
-  void* allocate(size_t size);
-
-  // Deallocate allocation returned by allocate
-  void deallocate(void*);
-
-  bool empty();
-
-  static void deallocate(HeapImpl* impl, void* ptr);
-
-  // Allocate a class of type T
-  template <class T>
-  T* allocate() {
-    return reinterpret_cast<T*>(allocate(sizeof(T)));
-  }
-
-  // Comparators, copied objects will be equal
-  bool operator==(const Heap& other) const { return impl_ == other.impl_; }
-  bool operator!=(const Heap& other) const { return !(*this == other); }
-
-  // std::unique_ptr wrapper that allocates using allocate and deletes using
-  // deallocate
-  template <class T>
-  using unique_ptr = std::unique_ptr<T, std::function<void(void*)>>;
-
-  template <class T, class... Args>
-  unique_ptr<T> make_unique(Args&&... args) {
-    HeapImpl* impl = impl_;
-    return unique_ptr<T>(new (allocate<T>()) T(std::forward<Args>(args)...), [impl](void* ptr) {
-      reinterpret_cast<T*>(ptr)->~T();
-      deallocate(impl, ptr);
-    });
-  }
-
-  // std::unique_ptr wrapper that allocates using allocate and deletes using
-  // deallocate
-  template <class T>
-  using shared_ptr = std::shared_ptr<T>;
-
-  template <class T, class... Args>
-  shared_ptr<T> make_shared(Args&&... args);
-
- protected:
-  HeapImpl* impl_;
-  bool owns_impl_;
-};
-
-// STLAllocator implements the std allocator interface on top of a Heap
-template <typename T>
-class STLAllocator {
- public:
-  using value_type = T;
-  ~STLAllocator() {}
-
-  // Construct an STLAllocator on top of a Heap
-  STLAllocator(const Heap& heap)
-      :  // NOLINT, implicit
-        heap_(heap) {}
-
-  // Rebind an STLAllocator from an another STLAllocator
-  template <typename U>
-  STLAllocator(const STLAllocator<U>& other)
-      :  // NOLINT, implicit
-        heap_(other.heap_) {}
-
-  STLAllocator(const STLAllocator&) = default;
-  STLAllocator<T>& operator=(const STLAllocator<T>&) = default;
-
-  T* allocate(std::size_t n) { return reinterpret_cast<T*>(heap_.allocate(n * sizeof(T))); }
-
-  void deallocate(T* ptr, std::size_t) { heap_.deallocate(ptr); }
-
-  template <typename U>
-  bool operator==(const STLAllocator<U>& other) const {
-    return heap_ == other.heap_;
-  }
-  template <typename U>
-  inline bool operator!=(const STLAllocator<U>& other) const {
-    return !(this == other);
-  }
-
-  template <typename U>
-  friend class STLAllocator;
-
- protected:
-  Heap heap_;
-};
-
-// Allocator extends STLAllocator with some convenience methods for allocating
-// a single object and for constructing unique_ptr and shared_ptr objects with
-// appropriate deleters.
-template <class T>
-class Allocator : public STLAllocator<T> {
- public:
-  ~Allocator() {}
-
-  Allocator(const Heap& other)
-      :  // NOLINT, implicit
-        STLAllocator<T>(other) {}
-
-  template <typename U>
-  Allocator(const STLAllocator<U>& other)
-      :  // NOLINT, implicit
-        STLAllocator<T>(other) {}
-
-  Allocator(const Allocator&) = default;
-  Allocator<T>& operator=(const Allocator<T>&) = default;
-
-  using STLAllocator<T>::allocate;
-  using STLAllocator<T>::deallocate;
-  using STLAllocator<T>::heap_;
-
-  T* allocate() { return STLAllocator<T>::allocate(1); }
-  void deallocate(void* ptr) { heap_.deallocate(ptr); }
-
-  using shared_ptr = Heap::shared_ptr<T>;
-
-  template <class... Args>
-  shared_ptr make_shared(Args&&... args) {
-    return heap_.template make_shared<T>(std::forward<Args>(args)...);
-  }
-
-  using unique_ptr = Heap::unique_ptr<T>;
-
-  template <class... Args>
-  unique_ptr make_unique(Args&&... args) {
-    return heap_.template make_unique<T>(std::forward<Args>(args)...);
-  }
-};
-
-// std::unique_ptr wrapper that allocates using allocate and deletes using
-// deallocate.  Implemented outside class definition in order to pass
-// Allocator<T> to shared_ptr.
-template <class T, class... Args>
-inline Heap::shared_ptr<T> Heap::make_shared(Args&&... args) {
-  return std::allocate_shared<T, Allocator<T>, Args...>(Allocator<T>(*this),
-                                                        std::forward<Args>(args)...);
-}
-
-namespace allocator {
-
-template <class T>
-using vector = std::vector<T, Allocator<T>>;
-
-template <class T>
-using list = std::list<T, Allocator<T>>;
-
-template <class Key, class T, class Compare = std::less<Key>>
-using map = std::map<Key, T, Compare, Allocator<std::pair<const Key, T>>>;
-
-template <class Key, class T, class Hash = std::hash<Key>, class KeyEqual = std::equal_to<Key>>
-using unordered_map =
-    std::unordered_map<Key, T, Hash, KeyEqual, Allocator<std::pair<const Key, T>>>;
-
-template <class Key, class Hash = std::hash<Key>, class KeyEqual = std::equal_to<Key>>
-using unordered_set = std::unordered_set<Key, Hash, KeyEqual, Allocator<Key>>;
-
-template <class Key, class Compare = std::less<Key>>
-using set = std::set<Key, Compare, Allocator<Key>>;
-
-using string = std::basic_string<char, std::char_traits<char>, Allocator<char>>;
-}
-
-}  // namespace android
-
-#endif
diff --git a/libmemunreachable/Android.bp b/libmemunreachable/Android.bp
deleted file mode 100644
index 8f01e50..0000000
--- a/libmemunreachable/Android.bp
+++ /dev/null
@@ -1,103 +0,0 @@
-cc_defaults {
-    name: "libmemunreachable_defaults",
-
-    cflags: [
-        "-Wall",
-        "-Wextra",
-        "-Werror",
-    ],
-    shared_libs: [
-        "libbase",
-    ],
-
-    target: {
-        android: {
-            static_libs: ["libasync_safe"],
-        },
-        host: {
-            shared_libs: ["liblog"],
-        },
-    },
-}
-
-cc_library {
-    name: "libmemunreachable",
-    defaults: ["libmemunreachable_defaults"],
-    srcs: [
-        "Allocator.cpp",
-        "Binder.cpp",
-        "HeapWalker.cpp",
-        "LeakFolding.cpp",
-        "LeakPipe.cpp",
-        "MemUnreachable.cpp",
-        "ProcessMappings.cpp",
-        "PtracerThread.cpp",
-        "ThreadCapture.cpp",
-    ],
-
-    static_libs: [
-        "libc_malloc_debug_backtrace",
-        "libprocinfo",
-    ],
-    // Only need this for arm since libc++ uses its own unwind code that
-    // doesn't mix with the other default unwind code.
-    arch: {
-        arm: {
-            static_libs: ["libunwind_llvm"],
-        },
-    },
-    export_include_dirs: ["include"],
-    local_include_dirs: ["include"],
-}
-
-cc_test {
-    name: "memunreachable_test",
-    defaults: ["libmemunreachable_defaults"],
-    host_supported: true,
-    srcs: [
-        "tests/Allocator_test.cpp",
-        "tests/HeapWalker_test.cpp",
-        "tests/LeakFolding_test.cpp",
-    ],
-
-    target: {
-        android: {
-            srcs: [
-                "tests/DisableMalloc_test.cpp",
-                "tests/MemUnreachable_test.cpp",
-                "tests/ThreadCapture_test.cpp",
-            ],
-            shared_libs: [
-                "libmemunreachable",
-            ],
-        },
-        host: {
-            srcs: [
-                "Allocator.cpp",
-                "HeapWalker.cpp",
-                "LeakFolding.cpp",
-                "tests/HostMallocStub.cpp",
-            ],
-        },
-        darwin: {
-            enabled: false,
-        },
-    },
-
-    test_suites: ["device-tests"],
-}
-
-cc_test {
-    name: "memunreachable_binder_test",
-    defaults: ["libmemunreachable_defaults"],
-    srcs: [
-        "tests/Binder_test.cpp",
-    ],
-    static_libs: ["libmemunreachable"],
-    shared_libs: [
-        "libbinder",
-        "libhidlbase",
-        "libutils",
-    ],
-    test_suites: ["device-tests"],
-}
diff --git a/libmemunreachable/Binder.cpp b/libmemunreachable/Binder.cpp
deleted file mode 100644
index 60512a3..0000000
--- a/libmemunreachable/Binder.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/cdefs.h>
-#include <unistd.h>
-
-#include <functional>
-
-#include "Binder.h"
-#include "log.h"
-
-__BEGIN_DECLS
-
-// Weak undefined references to the symbols in libbinder and libhwbinder
-// so that libmemunreachable can call them in processes that have them
-// loaded without requiring libmemunreachable to have dependencies on them.
-ssize_t __attribute__((weak)) getBinderKernelReferences(size_t, uintptr_t*);
-ssize_t __attribute__((weak)) getHWBinderKernelReferences(size_t, uintptr_t*);
-
-__END_DECLS
-
-namespace android {
-
-static bool BinderReferencesToVector(allocator::vector<uintptr_t>& refs,
-                                     std::function<ssize_t(size_t, uintptr_t*)> fn) {
-  if (fn == nullptr) {
-    return true;
-  }
-
-  size_t size = refs.size();
-
-  do {
-    refs.resize(size);
-
-    ssize_t ret = fn(refs.size(), refs.data());
-    if (ret < 0) {
-      return false;
-    }
-
-    size = ret;
-  } while (size > refs.size());
-
-  refs.resize(size);
-  return true;
-}
-
-bool BinderReferences(allocator::vector<uintptr_t>& refs) {
-  refs.clear();
-
-  allocator::vector<uintptr_t> binder_refs{refs.get_allocator()};
-  if (BinderReferencesToVector(refs, getBinderKernelReferences)) {
-    refs.insert(refs.end(), binder_refs.begin(), binder_refs.end());
-  } else {
-    MEM_ALOGE("getBinderKernelReferences failed");
-  }
-
-  allocator::vector<uintptr_t> hwbinder_refs{refs.get_allocator()};
-  if (BinderReferencesToVector(hwbinder_refs, getHWBinderKernelReferences)) {
-    refs.insert(refs.end(), hwbinder_refs.begin(), hwbinder_refs.end());
-  } else {
-    MEM_ALOGE("getHWBinderKernelReferences failed");
-  }
-
-  return true;
-}
-
-}  // namespace android
diff --git a/libmemunreachable/Binder.h b/libmemunreachable/Binder.h
deleted file mode 100644
index bf4fd3e..0000000
--- a/libmemunreachable/Binder.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_BINDER_H_
-#define LIBMEMUNREACHABLE_BINDER_H_
-
-#include "Allocator.h"
-
-namespace android {
-
-bool BinderReferences(allocator::vector<uintptr_t>& refs);
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_BINDER_H_
diff --git a/libmemunreachable/HeapWalker.cpp b/libmemunreachable/HeapWalker.cpp
deleted file mode 100644
index 7cae048..0000000
--- a/libmemunreachable/HeapWalker.cpp
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <inttypes.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include <map>
-#include <utility>
-
-#include "Allocator.h"
-#include "HeapWalker.h"
-#include "LeakFolding.h"
-#include "ScopedSignalHandler.h"
-#include "log.h"
-
-namespace android {
-
-bool HeapWalker::Allocation(uintptr_t begin, uintptr_t end) {
-  if (end == begin) {
-    end = begin + 1;
-  }
-  Range range{begin, end};
-  if (valid_mappings_range_.end != 0 &&
-      (begin < valid_mappings_range_.begin || end > valid_mappings_range_.end)) {
-    MEM_LOG_ALWAYS_FATAL("allocation %p-%p is outside mapping range %p-%p",
-                         reinterpret_cast<void*>(begin), reinterpret_cast<void*>(end),
-                         reinterpret_cast<void*>(valid_mappings_range_.begin),
-                         reinterpret_cast<void*>(valid_mappings_range_.end));
-  }
-  auto inserted = allocations_.insert(std::pair<Range, AllocationInfo>(range, AllocationInfo{}));
-  if (inserted.second) {
-    valid_allocations_range_.begin = std::min(valid_allocations_range_.begin, begin);
-    valid_allocations_range_.end = std::max(valid_allocations_range_.end, end);
-    allocation_bytes_ += range.size();
-    return true;
-  } else {
-    Range overlap = inserted.first->first;
-    if (overlap != range) {
-      MEM_ALOGE("range %p-%p overlaps with existing range %p-%p", reinterpret_cast<void*>(begin),
-                reinterpret_cast<void*>(end), reinterpret_cast<void*>(overlap.begin),
-                reinterpret_cast<void*>(overlap.end));
-    }
-    return false;
-  }
-}
-
-// Sanitizers may consider certain memory inaccessible through certain pointers.
-// With MTE this will need to use unchecked instructions or disable tag checking globally.
-static uintptr_t ReadWordAtAddressUnsafe(uintptr_t word_ptr)
-    __attribute__((no_sanitize("address", "hwaddress"))) {
-  return *reinterpret_cast<uintptr_t*>(word_ptr);
-}
-
-bool HeapWalker::WordContainsAllocationPtr(uintptr_t word_ptr, Range* range, AllocationInfo** info) {
-  walking_ptr_ = word_ptr;
-  // This access may segfault if the process under test has done something strange,
-  // for example mprotect(PROT_NONE) on a native heap page.  If so, it will be
-  // caught and handled by mmaping a zero page over the faulting page.
-  uintptr_t value = ReadWordAtAddressUnsafe(word_ptr);
-  walking_ptr_ = 0;
-  if (value >= valid_allocations_range_.begin && value < valid_allocations_range_.end) {
-    AllocationMap::iterator it = allocations_.find(Range{value, value + 1});
-    if (it != allocations_.end()) {
-      *range = it->first;
-      *info = &it->second;
-      return true;
-    }
-  }
-  return false;
-}
-
-void HeapWalker::RecurseRoot(const Range& root) {
-  allocator::vector<Range> to_do(1, root, allocator_);
-  while (!to_do.empty()) {
-    Range range = to_do.back();
-    to_do.pop_back();
-
-    walking_range_ = range;
-    ForEachPtrInRange(range, [&](Range& ref_range, AllocationInfo* ref_info) {
-      if (!ref_info->referenced_from_root) {
-        ref_info->referenced_from_root = true;
-        to_do.push_back(ref_range);
-      }
-    });
-    walking_range_ = Range{0, 0};
-  }
-}
-
-void HeapWalker::Mapping(uintptr_t begin, uintptr_t end) {
-  valid_mappings_range_.begin = std::min(valid_mappings_range_.begin, begin);
-  valid_mappings_range_.end = std::max(valid_mappings_range_.end, end);
-}
-
-void HeapWalker::Root(uintptr_t begin, uintptr_t end) {
-  roots_.push_back(Range{begin, end});
-}
-
-void HeapWalker::Root(const allocator::vector<uintptr_t>& vals) {
-  root_vals_.insert(root_vals_.end(), vals.begin(), vals.end());
-}
-
-size_t HeapWalker::Allocations() {
-  return allocations_.size();
-}
-
-size_t HeapWalker::AllocationBytes() {
-  return allocation_bytes_;
-}
-
-bool HeapWalker::DetectLeaks() {
-  // Recursively walk pointers from roots to mark referenced allocations
-  for (auto it = roots_.begin(); it != roots_.end(); it++) {
-    RecurseRoot(*it);
-  }
-
-  Range vals;
-  vals.begin = reinterpret_cast<uintptr_t>(root_vals_.data());
-  vals.end = vals.begin + root_vals_.size() * sizeof(uintptr_t);
-
-  RecurseRoot(vals);
-
-  if (segv_page_count_ > 0) {
-    MEM_ALOGE("%zu pages skipped due to segfaults", segv_page_count_);
-  }
-
-  return true;
-}
-
-bool HeapWalker::Leaked(allocator::vector<Range>& leaked, size_t limit, size_t* num_leaks_out,
-                        size_t* leak_bytes_out) {
-  leaked.clear();
-
-  size_t num_leaks = 0;
-  size_t leak_bytes = 0;
-  for (auto it = allocations_.begin(); it != allocations_.end(); it++) {
-    if (!it->second.referenced_from_root) {
-      num_leaks++;
-      leak_bytes += it->first.end - it->first.begin;
-    }
-  }
-
-  size_t n = 0;
-  for (auto it = allocations_.begin(); it != allocations_.end(); it++) {
-    if (!it->second.referenced_from_root) {
-      if (n++ < limit) {
-        leaked.push_back(it->first);
-      }
-    }
-  }
-
-  if (num_leaks_out) {
-    *num_leaks_out = num_leaks;
-  }
-  if (leak_bytes_out) {
-    *leak_bytes_out = leak_bytes;
-  }
-
-  return true;
-}
-
-static bool MapOverPage(void* addr) {
-  const size_t page_size = sysconf(_SC_PAGE_SIZE);
-  void* page = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(addr) & ~(page_size - 1));
-
-  void* ret = mmap(page, page_size, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0);
-  if (ret == MAP_FAILED) {
-    MEM_ALOGE("failed to map page at %p: %s", page, strerror(errno));
-    return false;
-  }
-
-  return true;
-}
-
-void HeapWalker::HandleSegFault(ScopedSignalHandler& handler, int signal, siginfo_t* si,
-                                void* /*uctx*/) {
-  uintptr_t addr = reinterpret_cast<uintptr_t>(si->si_addr);
-  if (addr != walking_ptr_) {
-    handler.reset();
-    return;
-  }
-  if (!segv_logged_) {
-    MEM_ALOGW("failed to read page at %p, signal %d", si->si_addr, signal);
-    if (walking_range_.begin != 0U) {
-      MEM_ALOGW("while walking range %p-%p", reinterpret_cast<void*>(walking_range_.begin),
-                reinterpret_cast<void*>(walking_range_.end));
-    }
-    segv_logged_ = true;
-  }
-  segv_page_count_++;
-  if (!MapOverPage(si->si_addr)) {
-    handler.reset();
-  }
-}
-
-Allocator<ScopedSignalHandler::SignalFnMap>::unique_ptr ScopedSignalHandler::handler_map_;
-
-}  // namespace android
diff --git a/libmemunreachable/HeapWalker.h b/libmemunreachable/HeapWalker.h
deleted file mode 100644
index f00bcca..0000000
--- a/libmemunreachable/HeapWalker.h
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_HEAP_WALKER_H_
-#define LIBMEMUNREACHABLE_HEAP_WALKER_H_
-
-#include <signal.h>
-
-#include "android-base/macros.h"
-
-#include "Allocator.h"
-#include "ScopedSignalHandler.h"
-#include "Tarjan.h"
-
-namespace android {
-
-// A range [begin, end)
-struct Range {
-  uintptr_t begin;
-  uintptr_t end;
-
-  size_t size() const { return end - begin; };
-  bool operator==(const Range& other) const {
-    return this->begin == other.begin && this->end == other.end;
-  }
-  bool operator!=(const Range& other) const { return !(*this == other); }
-};
-
-// Comparator for Ranges that returns equivalence for overlapping ranges
-struct compare_range {
-  bool operator()(const Range& a, const Range& b) const { return a.end <= b.begin; }
-};
-
-class HeapWalker {
- public:
-  explicit HeapWalker(Allocator<HeapWalker> allocator)
-      : allocator_(allocator),
-        allocations_(allocator),
-        allocation_bytes_(0),
-        roots_(allocator),
-        root_vals_(allocator),
-        sigsegv_handler_(allocator),
-        sigbus_handler_(allocator),
-        walking_ptr_(0),
-        walking_range_{0, 0},
-        segv_logged_(false),
-        segv_page_count_(0) {
-    valid_allocations_range_.end = 0;
-    valid_allocations_range_.begin = ~valid_allocations_range_.end;
-    valid_mappings_range_.end = 0;
-    valid_mappings_range_.begin = ~valid_allocations_range_.end;
-
-    sigsegv_handler_.install(
-        SIGSEGV, [=](ScopedSignalHandler& handler, int signal, siginfo_t* siginfo, void* uctx) {
-          this->HandleSegFault(handler, signal, siginfo, uctx);
-        });
-    sigbus_handler_.install(
-        SIGBUS, [=](ScopedSignalHandler& handler, int signal, siginfo_t* siginfo, void* uctx) {
-          this->HandleSegFault(handler, signal, siginfo, uctx);
-        });
-  }
-
-  ~HeapWalker() {}
-  bool Allocation(uintptr_t begin, uintptr_t end);
-  void Mapping(uintptr_t begin, uintptr_t end);
-  void Root(uintptr_t begin, uintptr_t end);
-  void Root(const allocator::vector<uintptr_t>& vals);
-
-  bool DetectLeaks();
-
-  bool Leaked(allocator::vector<Range>&, size_t limit, size_t* num_leaks, size_t* leak_bytes);
-  size_t Allocations();
-  size_t AllocationBytes();
-
-  template <class F>
-  void ForEachPtrInRange(const Range& range, F&& f);
-
-  template <class F>
-  void ForEachAllocation(F&& f);
-
-  struct AllocationInfo {
-    bool referenced_from_root;
-  };
-
- private:
-  void RecurseRoot(const Range& root);
-  bool WordContainsAllocationPtr(uintptr_t ptr, Range* range, AllocationInfo** info);
-  void HandleSegFault(ScopedSignalHandler&, int, siginfo_t*, void*);
-
-  DISALLOW_COPY_AND_ASSIGN(HeapWalker);
-  Allocator<HeapWalker> allocator_;
-  using AllocationMap = allocator::map<Range, AllocationInfo, compare_range>;
-  AllocationMap allocations_;
-  size_t allocation_bytes_;
-  Range valid_allocations_range_;
-  Range valid_mappings_range_;
-
-  allocator::vector<Range> roots_;
-  allocator::vector<uintptr_t> root_vals_;
-
-  ScopedSignalHandler sigsegv_handler_;
-  ScopedSignalHandler sigbus_handler_;
-  volatile uintptr_t walking_ptr_;
-  Range walking_range_;
-  bool segv_logged_;
-  size_t segv_page_count_;
-};
-
-template <class F>
-inline void HeapWalker::ForEachPtrInRange(const Range& range, F&& f) {
-  uintptr_t begin = (range.begin + (sizeof(uintptr_t) - 1)) & ~(sizeof(uintptr_t) - 1);
-  // TODO(ccross): we might need to consider a pointer to the end of a buffer
-  // to be inside the buffer, which means the common case of a pointer to the
-  // beginning of a buffer may keep two ranges live.
-  for (uintptr_t i = begin; i < range.end; i += sizeof(uintptr_t)) {
-    Range ref_range;
-    AllocationInfo* ref_info;
-    if (WordContainsAllocationPtr(i, &ref_range, &ref_info)) {
-      f(ref_range, ref_info);
-    }
-  }
-}
-
-template <class F>
-inline void HeapWalker::ForEachAllocation(F&& f) {
-  for (auto& it : allocations_) {
-    const Range& range = it.first;
-    HeapWalker::AllocationInfo& allocation = it.second;
-    f(range, allocation);
-  }
-}
-
-}  // namespace android
-
-#endif
diff --git a/libmemunreachable/Leak.h b/libmemunreachable/Leak.h
deleted file mode 100644
index de64b64..0000000
--- a/libmemunreachable/Leak.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_LEAK_H_
-#define LIBMEMUNREACHABLE_LEAK_H_
-
-#include <functional>
-#include <vector>
-
-#include "memunreachable/memunreachable.h"
-
-// Custom std::hash specialization so that Leak::Backtrace can be used
-// as a key in std::unordered_map.
-namespace std {
-
-template <>
-struct hash<android::Leak::Backtrace> {
-  std::size_t operator()(const android::Leak::Backtrace& key) const {
-    std::size_t seed = 0;
-
-    hash_combine(seed, key.num_frames);
-    for (size_t i = 0; i < key.num_frames; i++) {
-      hash_combine(seed, key.frames[i]);
-    }
-
-    return seed;
-  }
-
- private:
-  template <typename T>
-  inline void hash_combine(std::size_t& seed, const T& v) const {
-    std::hash<T> hasher;
-    seed ^= hasher(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
-  }
-};
-
-}  // namespace std
-
-namespace android {
-
-static bool operator==(const Leak::Backtrace& lhs, const Leak::Backtrace& rhs) {
-  return (lhs.num_frames == rhs.num_frames) &&
-         memcmp(lhs.frames, rhs.frames, lhs.num_frames * sizeof(lhs.frames[0])) == 0;
-}
-}
-
-#endif
diff --git a/libmemunreachable/LeakFolding.cpp b/libmemunreachable/LeakFolding.cpp
deleted file mode 100644
index 074dc48..0000000
--- a/libmemunreachable/LeakFolding.cpp
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <inttypes.h>
-
-#include "Allocator.h"
-#include "HeapWalker.h"
-#include "LeakFolding.h"
-#include "Tarjan.h"
-#include "log.h"
-
-namespace android {
-
-// Converts possibly cyclic graph of leaks to a DAG by combining
-// strongly-connected components into a object, stored in the scc pointer
-// of each node in the component.
-void LeakFolding::ComputeDAG() {
-  SCCList<LeakInfo> scc_list{allocator_};
-  Tarjan(leak_graph_, scc_list);
-
-  Allocator<SCCInfo> scc_allocator = allocator_;
-
-  for (auto& scc_nodes : scc_list) {
-    Allocator<SCCInfo>::unique_ptr leak_scc;
-    leak_scc = scc_allocator.make_unique(scc_allocator);
-
-    for (auto& node : scc_nodes) {
-      node->ptr->scc = leak_scc.get();
-      leak_scc->count++;
-      leak_scc->size += node->ptr->range.size();
-    }
-
-    leak_scc_.emplace_back(std::move(leak_scc));
-  }
-
-  for (auto& it : leak_map_) {
-    LeakInfo& leak = it.second;
-    for (auto& ref : leak.node.references_out) {
-      if (leak.scc != ref->ptr->scc) {
-        leak.scc->node.Edge(&ref->ptr->scc->node);
-      }
-    }
-  }
-}
-
-void LeakFolding::AccumulateLeaks(SCCInfo* dominator) {
-  std::function<void(SCCInfo*)> walk([&](SCCInfo* scc) {
-    if (scc->accumulator != dominator) {
-      scc->accumulator = dominator;
-      dominator->cuumulative_size += scc->size;
-      dominator->cuumulative_count += scc->count;
-      scc->node.Foreach([&](SCCInfo* ref) { walk(ref); });
-    }
-  });
-  walk(dominator);
-}
-
-bool LeakFolding::FoldLeaks() {
-  Allocator<LeakInfo> leak_allocator = allocator_;
-
-  // Find all leaked allocations insert them into leak_map_ and leak_graph_
-  heap_walker_.ForEachAllocation([&](const Range& range, HeapWalker::AllocationInfo& allocation) {
-    if (!allocation.referenced_from_root) {
-      auto it = leak_map_.emplace(std::piecewise_construct, std::forward_as_tuple(range),
-                                  std::forward_as_tuple(range, allocator_));
-      LeakInfo& leak = it.first->second;
-      leak_graph_.push_back(&leak.node);
-    }
-  });
-
-  // Find references between leaked allocations and connect them in leak_graph_
-  for (auto& it : leak_map_) {
-    LeakInfo& leak = it.second;
-    heap_walker_.ForEachPtrInRange(leak.range,
-                                   [&](Range& ptr_range, HeapWalker::AllocationInfo* ptr_info) {
-                                     if (!ptr_info->referenced_from_root) {
-                                       LeakInfo* ptr_leak = &leak_map_.at(ptr_range);
-                                       leak.node.Edge(&ptr_leak->node);
-                                     }
-                                   });
-  }
-
-  // Convert the cyclic graph to a DAG by grouping strongly connected components
-  ComputeDAG();
-
-  // Compute dominators and cuumulative sizes
-  for (auto& scc : leak_scc_) {
-    if (scc->node.references_in.size() == 0) {
-      scc->dominator = true;
-      AccumulateLeaks(scc.get());
-    }
-  }
-
-  return true;
-}
-
-bool LeakFolding::Leaked(allocator::vector<LeakFolding::Leak>& leaked, size_t* num_leaks_out,
-                         size_t* leak_bytes_out) {
-  size_t num_leaks = 0;
-  size_t leak_bytes = 0;
-  for (auto& it : leak_map_) {
-    const LeakInfo& leak = it.second;
-    num_leaks++;
-    leak_bytes += leak.range.size();
-  }
-
-  for (auto& it : leak_map_) {
-    const LeakInfo& leak = it.second;
-    if (leak.scc->dominator) {
-      leaked.emplace_back(Leak{leak.range, leak.scc->cuumulative_count - 1,
-                               leak.scc->cuumulative_size - leak.range.size()});
-    }
-  }
-
-  if (num_leaks_out) {
-    *num_leaks_out = num_leaks;
-  }
-  if (leak_bytes_out) {
-    *leak_bytes_out = leak_bytes;
-  }
-
-  return true;
-}
-
-}  // namespace android
diff --git a/libmemunreachable/LeakFolding.h b/libmemunreachable/LeakFolding.h
deleted file mode 100644
index 09affac..0000000
--- a/libmemunreachable/LeakFolding.h
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_LEAK_FOLDING_H_
-#define LIBMEMUNREACHABLE_LEAK_FOLDING_H_
-
-#include "HeapWalker.h"
-
-namespace android {
-
-class LeakFolding {
- public:
-  LeakFolding(Allocator<void> allocator, HeapWalker& heap_walker)
-      : allocator_(allocator),
-        heap_walker_(heap_walker),
-        leak_map_(allocator),
-        leak_graph_(allocator),
-        leak_scc_(allocator) {}
-
-  bool FoldLeaks();
-
-  struct Leak {
-    const Range range;
-    size_t referenced_count;
-    size_t referenced_size;
-  };
-
-  bool Leaked(allocator::vector<Leak>& leaked, size_t* num_leaks_out, size_t* leak_bytes_out);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(LeakFolding);
-  Allocator<void> allocator_;
-  HeapWalker& heap_walker_;
-
-  struct SCCInfo {
-   public:
-    Node<SCCInfo> node;
-
-    size_t count;
-    size_t size;
-
-    size_t cuumulative_count;
-    size_t cuumulative_size;
-
-    bool dominator;
-    SCCInfo* accumulator;
-
-    explicit SCCInfo(Allocator<SCCInfo> allocator)
-        : node(this, allocator),
-          count(0),
-          size(0),
-          cuumulative_count(0),
-          cuumulative_size(0),
-          dominator(false),
-          accumulator(nullptr) {}
-
-   private:
-    SCCInfo(SCCInfo&&) = delete;
-    DISALLOW_COPY_AND_ASSIGN(SCCInfo);
-  };
-
-  struct LeakInfo {
-   public:
-    Node<LeakInfo> node;
-
-    const Range range;
-
-    SCCInfo* scc;
-
-    LeakInfo(const Range& range, Allocator<LeakInfo> allocator)
-        : node(this, allocator), range(range), scc(nullptr) {}
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(LeakInfo);
-  };
-
-  void ComputeDAG();
-  void AccumulateLeaks(SCCInfo* dominator);
-
-  allocator::map<Range, LeakInfo, compare_range> leak_map_;
-  Graph<LeakInfo> leak_graph_;
-  allocator::vector<Allocator<SCCInfo>::unique_ptr> leak_scc_;
-};
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_LEAK_FOLDING_H_
diff --git a/libmemunreachable/LeakPipe.cpp b/libmemunreachable/LeakPipe.cpp
deleted file mode 100644
index 8ea9ad6..0000000
--- a/libmemunreachable/LeakPipe.cpp
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <string.h>
-
-#include "LeakPipe.h"
-
-#include "log.h"
-
-namespace android {
-
-bool LeakPipe::SendFd(int sock, int fd) {
-  struct msghdr hdr {};
-  struct iovec iov {};
-  unsigned int data = 0xfdfdfdfd;
-  alignas(struct cmsghdr) char cmsgbuf[CMSG_SPACE(sizeof(int))];
-
-  hdr.msg_iov = &iov;
-  hdr.msg_iovlen = 1;
-  iov.iov_base = &data;
-  iov.iov_len = sizeof(data);
-
-  hdr.msg_control = cmsgbuf;
-  hdr.msg_controllen = CMSG_LEN(sizeof(int));
-
-  struct cmsghdr* cmsg = CMSG_FIRSTHDR(&hdr);
-  cmsg->cmsg_len = CMSG_LEN(sizeof(int));
-  cmsg->cmsg_level = SOL_SOCKET;
-  cmsg->cmsg_type = SCM_RIGHTS;
-
-  *(int*)CMSG_DATA(cmsg) = fd;
-
-  int ret = sendmsg(sock, &hdr, 0);
-  if (ret < 0) {
-    MEM_ALOGE("failed to send fd: %s", strerror(errno));
-    return false;
-  }
-  if (ret == 0) {
-    MEM_ALOGE("eof when sending fd");
-    return false;
-  }
-
-  return true;
-}
-
-int LeakPipe::ReceiveFd(int sock) {
-  struct msghdr hdr {};
-  struct iovec iov {};
-  unsigned int data;
-  alignas(struct cmsghdr) char cmsgbuf[CMSG_SPACE(sizeof(int))];
-
-  hdr.msg_iov = &iov;
-  hdr.msg_iovlen = 1;
-  iov.iov_base = &data;
-  iov.iov_len = sizeof(data);
-
-  hdr.msg_control = cmsgbuf;
-  hdr.msg_controllen = CMSG_LEN(sizeof(int));
-
-  int ret = recvmsg(sock, &hdr, 0);
-  if (ret < 0) {
-    MEM_ALOGE("failed to receive fd: %s", strerror(errno));
-    return -1;
-  }
-  if (ret == 0) {
-    MEM_ALOGE("eof when receiving fd");
-    return -1;
-  }
-
-  struct cmsghdr* cmsg = CMSG_FIRSTHDR(&hdr);
-  if (cmsg == NULL || cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
-    MEM_ALOGE("missing fd while receiving fd");
-    return -1;
-  }
-
-  return *(int*)CMSG_DATA(cmsg);
-}
-
-}  // namespace android
diff --git a/libmemunreachable/LeakPipe.h b/libmemunreachable/LeakPipe.h
deleted file mode 100644
index 94d4aa4..0000000
--- a/libmemunreachable/LeakPipe.h
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_LEAK_PIPE_H_
-#define LIBMEMUNREACHABLE_LEAK_PIPE_H_
-
-#include <sys/socket.h>
-
-#include <vector>
-
-#include "android-base/macros.h"
-
-#include "ScopedPipe.h"
-#include "log.h"
-
-namespace android {
-
-// LeakPipe implements a pipe that can transfer vectors of simple objects
-// between processes.  The pipe is created in the sending process and
-// transferred over a socketpair that was created before forking.  This ensures
-// that only the sending process can have the send side of the pipe open, so if
-// the sending process dies the pipe will close.
-class LeakPipe {
- public:
-  LeakPipe() {
-    int ret = socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv_);
-    if (ret < 0) {
-      MEM_LOG_ALWAYS_FATAL("failed to create socketpair: %s", strerror(errno));
-    }
-  }
-
-  ~LeakPipe() { Close(); }
-
-  void Close() {
-    close(sv_[0]);
-    close(sv_[1]);
-    sv_[0] = -1;
-    sv_[1] = -1;
-  }
-
-  bool OpenReceiver() {
-    int fd = ReceiveFd(sv_[0]);
-    if (fd < 0) {
-      return false;
-    }
-
-    receiver_.SetFd(fd);
-    return true;
-  }
-
-  bool OpenSender() {
-    ScopedPipe pipe;
-
-    if (!SendFd(sv_[1], pipe.Receiver())) {
-      return false;
-    }
-    pipe.ReleaseReceiver();
-
-    sender_.SetFd(pipe.ReleaseSender());
-    return true;
-  }
-
-  class LeakPipeBase {
-   public:
-    LeakPipeBase() : fd_(-1) {}
-
-    ~LeakPipeBase() { Close(); }
-
-    void SetFd(int fd) { fd_ = fd; }
-
-    void Close() {
-      close(fd_);
-      fd_ = -1;
-    }
-
-   protected:
-    int fd_;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(LeakPipeBase);
-  };
-
-  class LeakPipeSender : public LeakPipeBase {
-   public:
-    using LeakPipeBase::LeakPipeBase;
-
-    template <typename T>
-    bool Send(const T& value) {
-      ssize_t ret = TEMP_FAILURE_RETRY(write(fd_, &value, sizeof(T)));
-      if (ret < 0) {
-        MEM_ALOGE("failed to send value: %s", strerror(errno));
-        return false;
-      } else if (static_cast<size_t>(ret) != sizeof(T)) {
-        MEM_ALOGE("eof while writing value");
-        return false;
-      }
-
-      return true;
-    }
-
-    template <class T, class Alloc = std::allocator<T>>
-    bool SendVector(const std::vector<T, Alloc>& vector) {
-      size_t size = vector.size() * sizeof(T);
-      if (!Send(size)) {
-        return false;
-      }
-
-      ssize_t ret = TEMP_FAILURE_RETRY(write(fd_, vector.data(), size));
-      if (ret < 0) {
-        MEM_ALOGE("failed to send vector: %s", strerror(errno));
-        return false;
-      } else if (static_cast<size_t>(ret) != size) {
-        MEM_ALOGE("eof while writing vector");
-        return false;
-      }
-
-      return true;
-    }
-  };
-
-  class LeakPipeReceiver : public LeakPipeBase {
-   public:
-    using LeakPipeBase::LeakPipeBase;
-
-    template <typename T>
-    bool Receive(T* value) {
-      ssize_t ret = TEMP_FAILURE_RETRY(read(fd_, reinterpret_cast<void*>(value), sizeof(T)));
-      if (ret < 0) {
-        MEM_ALOGE("failed to receive value: %s", strerror(errno));
-        return false;
-      } else if (static_cast<size_t>(ret) != sizeof(T)) {
-        MEM_ALOGE("eof while receiving value");
-        return false;
-      }
-
-      return true;
-    }
-
-    template <class T, class Alloc = std::allocator<T>>
-    bool ReceiveVector(std::vector<T, Alloc>& vector) {
-      size_t size = 0;
-      if (!Receive(&size)) {
-        return false;
-      }
-
-      vector.resize(size / sizeof(T));
-
-      char* ptr = reinterpret_cast<char*>(vector.data());
-      while (size > 0) {
-        ssize_t ret = TEMP_FAILURE_RETRY(read(fd_, ptr, size));
-        if (ret < 0) {
-          MEM_ALOGE("failed to send vector: %s", strerror(errno));
-          return false;
-        } else if (ret == 0) {
-          MEM_ALOGE("eof while reading vector");
-          return false;
-        }
-        size -= ret;
-        ptr += ret;
-      }
-
-      return true;
-    }
-  };
-
-  LeakPipeReceiver& Receiver() { return receiver_; }
-
-  LeakPipeSender& Sender() { return sender_; }
-
- private:
-  LeakPipeReceiver receiver_;
-  LeakPipeSender sender_;
-  bool SendFd(int sock, int fd);
-  int ReceiveFd(int sock);
-  DISALLOW_COPY_AND_ASSIGN(LeakPipe);
-  int sv_[2];
-};
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_LEAK_PIPE_H_
diff --git a/libmemunreachable/LinkedList.h b/libmemunreachable/LinkedList.h
deleted file mode 100644
index 36fe9fd..0000000
--- a/libmemunreachable/LinkedList.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_LINKED_LIST_H_
-#define LIBMEMUNREACHABLE_LINKED_LIST_H_
-
-namespace android {
-
-template <class T>
-class LinkedList {
- public:
-  LinkedList() : next_(this), prev_(this), data_() {}
-  explicit LinkedList(T data) : LinkedList() { data_ = data; }
-  ~LinkedList() {}
-  void insert(LinkedList<T>& node) {
-    assert(node.empty());
-    node.next_ = this->next_;
-    node.next_->prev_ = &node;
-    this->next_ = &node;
-    node.prev_ = this;
-  }
-  void remove() {
-    this->next_->prev_ = this->prev_;
-    this->prev_->next_ = this->next_;
-    this->next_ = this;
-    this->prev_ = this;
-  }
-  T data() { return data_; }
-  bool empty() { return next_ == this && prev_ == this; }
-  LinkedList<T>* next() { return next_; }
-
- private:
-  LinkedList<T>* next_;
-  LinkedList<T>* prev_;
-  T data_;
-};
-
-template <class T>
-class LinkedListHead {
- public:
-  LinkedListHead() : node_() {}
-  ~LinkedListHead() {}
-
- private:
-  LinkedList<T> node_;
-};
-
-}  // namespace android
-
-#endif
diff --git a/libmemunreachable/MemUnreachable.cpp b/libmemunreachable/MemUnreachable.cpp
deleted file mode 100644
index 299c320..0000000
--- a/libmemunreachable/MemUnreachable.cpp
+++ /dev/null
@@ -1,556 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <inttypes.h>
-#include <string.h>
-
-#include <functional>
-#include <iomanip>
-#include <mutex>
-#include <sstream>
-#include <string>
-#include <unordered_map>
-
-#include <android-base/macros.h>
-#include <backtrace.h>
-
-#include "Allocator.h"
-#include "Binder.h"
-#include "HeapWalker.h"
-#include "Leak.h"
-#include "LeakFolding.h"
-#include "LeakPipe.h"
-#include "ProcessMappings.h"
-#include "PtracerThread.h"
-#include "ScopedDisableMalloc.h"
-#include "Semaphore.h"
-#include "ThreadCapture.h"
-
-#include "bionic.h"
-#include "log.h"
-#include "memunreachable/memunreachable.h"
-
-using namespace std::chrono_literals;
-
-namespace android {
-
-const size_t Leak::contents_length;
-
-class MemUnreachable {
- public:
-  MemUnreachable(pid_t pid, Allocator<void> allocator)
-      : pid_(pid), allocator_(allocator), heap_walker_(allocator_) {}
-  bool CollectAllocations(const allocator::vector<ThreadInfo>& threads,
-                          const allocator::vector<Mapping>& mappings,
-                          const allocator::vector<uintptr_t>& refs);
-  bool GetUnreachableMemory(allocator::vector<Leak>& leaks, size_t limit, size_t* num_leaks,
-                            size_t* leak_bytes);
-  size_t Allocations() { return heap_walker_.Allocations(); }
-  size_t AllocationBytes() { return heap_walker_.AllocationBytes(); }
-
- private:
-  bool ClassifyMappings(const allocator::vector<Mapping>& mappings,
-                        allocator::vector<Mapping>& heap_mappings,
-                        allocator::vector<Mapping>& anon_mappings,
-                        allocator::vector<Mapping>& globals_mappings,
-                        allocator::vector<Mapping>& stack_mappings);
-  DISALLOW_COPY_AND_ASSIGN(MemUnreachable);
-  pid_t pid_;
-  Allocator<void> allocator_;
-  HeapWalker heap_walker_;
-};
-
-static void HeapIterate(const Mapping& heap_mapping,
-                        const std::function<void(uintptr_t, size_t)>& func) {
-  malloc_iterate(heap_mapping.begin, heap_mapping.end - heap_mapping.begin,
-                 [](uintptr_t base, size_t size, void* arg) {
-                   auto f = reinterpret_cast<const std::function<void(uintptr_t, size_t)>*>(arg);
-                   (*f)(base, size);
-                 },
-                 const_cast<void*>(reinterpret_cast<const void*>(&func)));
-}
-
-bool MemUnreachable::CollectAllocations(const allocator::vector<ThreadInfo>& threads,
-                                        const allocator::vector<Mapping>& mappings,
-                                        const allocator::vector<uintptr_t>& refs) {
-  MEM_ALOGI("searching process %d for allocations", pid_);
-
-  for (auto it = mappings.begin(); it != mappings.end(); it++) {
-    heap_walker_.Mapping(it->begin, it->end);
-  }
-
-  allocator::vector<Mapping> heap_mappings{mappings};
-  allocator::vector<Mapping> anon_mappings{mappings};
-  allocator::vector<Mapping> globals_mappings{mappings};
-  allocator::vector<Mapping> stack_mappings{mappings};
-  if (!ClassifyMappings(mappings, heap_mappings, anon_mappings, globals_mappings, stack_mappings)) {
-    return false;
-  }
-
-  for (auto it = heap_mappings.begin(); it != heap_mappings.end(); it++) {
-    MEM_ALOGV("Heap mapping %" PRIxPTR "-%" PRIxPTR " %s", it->begin, it->end, it->name);
-    HeapIterate(*it,
-                [&](uintptr_t base, size_t size) { heap_walker_.Allocation(base, base + size); });
-  }
-
-  for (auto it = anon_mappings.begin(); it != anon_mappings.end(); it++) {
-    MEM_ALOGV("Anon mapping %" PRIxPTR "-%" PRIxPTR " %s", it->begin, it->end, it->name);
-    heap_walker_.Allocation(it->begin, it->end);
-  }
-
-  for (auto it = globals_mappings.begin(); it != globals_mappings.end(); it++) {
-    MEM_ALOGV("Globals mapping %" PRIxPTR "-%" PRIxPTR " %s", it->begin, it->end, it->name);
-    heap_walker_.Root(it->begin, it->end);
-  }
-
-  for (auto thread_it = threads.begin(); thread_it != threads.end(); thread_it++) {
-    for (auto it = stack_mappings.begin(); it != stack_mappings.end(); it++) {
-      if (thread_it->stack.first >= it->begin && thread_it->stack.first <= it->end) {
-        MEM_ALOGV("Stack %" PRIxPTR "-%" PRIxPTR " %s", thread_it->stack.first, it->end, it->name);
-        heap_walker_.Root(thread_it->stack.first, it->end);
-      }
-    }
-    heap_walker_.Root(thread_it->regs);
-  }
-
-  heap_walker_.Root(refs);
-
-  MEM_ALOGI("searching done");
-
-  return true;
-}
-
-bool MemUnreachable::GetUnreachableMemory(allocator::vector<Leak>& leaks, size_t limit,
-                                          size_t* num_leaks, size_t* leak_bytes) {
-  MEM_ALOGI("sweeping process %d for unreachable memory", pid_);
-  leaks.clear();
-
-  if (!heap_walker_.DetectLeaks()) {
-    return false;
-  }
-
-  allocator::vector<Range> leaked1{allocator_};
-  heap_walker_.Leaked(leaked1, 0, num_leaks, leak_bytes);
-
-  MEM_ALOGI("sweeping done");
-
-  MEM_ALOGI("folding related leaks");
-
-  LeakFolding folding(allocator_, heap_walker_);
-  if (!folding.FoldLeaks()) {
-    return false;
-  }
-
-  allocator::vector<LeakFolding::Leak> leaked{allocator_};
-
-  if (!folding.Leaked(leaked, num_leaks, leak_bytes)) {
-    return false;
-  }
-
-  allocator::unordered_map<Leak::Backtrace, Leak*> backtrace_map{allocator_};
-
-  // Prevent reallocations of backing memory so we can store pointers into it
-  // in backtrace_map.
-  leaks.reserve(leaked.size());
-
-  for (auto& it : leaked) {
-    leaks.emplace_back();
-    Leak* leak = &leaks.back();
-
-    ssize_t num_backtrace_frames = malloc_backtrace(
-        reinterpret_cast<void*>(it.range.begin), leak->backtrace.frames, leak->backtrace.max_frames);
-    if (num_backtrace_frames > 0) {
-      leak->backtrace.num_frames = num_backtrace_frames;
-
-      auto inserted = backtrace_map.emplace(leak->backtrace, leak);
-      if (!inserted.second) {
-        // Leak with same backtrace already exists, drop this one and
-        // increment similar counts on the existing one.
-        leaks.pop_back();
-        Leak* similar_leak = inserted.first->second;
-        similar_leak->similar_count++;
-        similar_leak->similar_size += it.range.size();
-        similar_leak->similar_referenced_count += it.referenced_count;
-        similar_leak->similar_referenced_size += it.referenced_size;
-        similar_leak->total_size += it.range.size();
-        similar_leak->total_size += it.referenced_size;
-        continue;
-      }
-    }
-
-    leak->begin = it.range.begin;
-    leak->size = it.range.size();
-    leak->referenced_count = it.referenced_count;
-    leak->referenced_size = it.referenced_size;
-    leak->total_size = leak->size + leak->referenced_size;
-    memcpy(leak->contents, reinterpret_cast<void*>(it.range.begin),
-           std::min(leak->size, Leak::contents_length));
-  }
-
-  MEM_ALOGI("folding done");
-
-  std::sort(leaks.begin(), leaks.end(),
-            [](const Leak& a, const Leak& b) { return a.total_size > b.total_size; });
-
-  if (leaks.size() > limit) {
-    leaks.resize(limit);
-  }
-
-  return true;
-}
-
-static bool has_prefix(const allocator::string& s, const char* prefix) {
-  int ret = s.compare(0, strlen(prefix), prefix);
-  return ret == 0;
-}
-
-static bool is_sanitizer_mapping(const allocator::string& s) {
-  return s == "[anon:low shadow]" || s == "[anon:high shadow]" || has_prefix(s, "[anon:hwasan");
-}
-
-bool MemUnreachable::ClassifyMappings(const allocator::vector<Mapping>& mappings,
-                                      allocator::vector<Mapping>& heap_mappings,
-                                      allocator::vector<Mapping>& anon_mappings,
-                                      allocator::vector<Mapping>& globals_mappings,
-                                      allocator::vector<Mapping>& stack_mappings) {
-  heap_mappings.clear();
-  anon_mappings.clear();
-  globals_mappings.clear();
-  stack_mappings.clear();
-
-  allocator::string current_lib{allocator_};
-
-  for (auto it = mappings.begin(); it != mappings.end(); it++) {
-    if (it->execute) {
-      current_lib = it->name;
-      continue;
-    }
-
-    if (!it->read) {
-      continue;
-    }
-
-    const allocator::string mapping_name{it->name, allocator_};
-    if (mapping_name == "[anon:.bss]") {
-      // named .bss section
-      globals_mappings.emplace_back(*it);
-    } else if (mapping_name == current_lib) {
-      // .rodata or .data section
-      globals_mappings.emplace_back(*it);
-    } else if (mapping_name == "[anon:libc_malloc]") {
-      // named malloc mapping
-      heap_mappings.emplace_back(*it);
-    } else if (has_prefix(mapping_name, "[anon:dalvik-")) {
-      // named dalvik heap mapping
-      globals_mappings.emplace_back(*it);
-    } else if (has_prefix(mapping_name, "[stack")) {
-      // named stack mapping
-      stack_mappings.emplace_back(*it);
-    } else if (mapping_name.size() == 0) {
-      globals_mappings.emplace_back(*it);
-    } else if (has_prefix(mapping_name, "[anon:") &&
-               mapping_name != "[anon:leak_detector_malloc]" &&
-               !is_sanitizer_mapping(mapping_name)) {
-      // TODO(ccross): it would be nice to treat named anonymous mappings as
-      // possible leaks, but naming something in a .bss or .data section makes
-      // it impossible to distinguish them from mmaped and then named mappings.
-      globals_mappings.emplace_back(*it);
-    }
-  }
-
-  return true;
-}
-
-template <typename T>
-static inline const char* plural(T val) {
-  return (val == 1) ? "" : "s";
-}
-
-bool GetUnreachableMemory(UnreachableMemoryInfo& info, size_t limit) {
-  int parent_pid = getpid();
-  int parent_tid = gettid();
-
-  Heap heap;
-
-  Semaphore continue_parent_sem;
-  LeakPipe pipe;
-
-  PtracerThread thread{[&]() -> int {
-    /////////////////////////////////////////////
-    // Collection thread
-    /////////////////////////////////////////////
-    MEM_ALOGI("collecting thread info for process %d...", parent_pid);
-
-    ThreadCapture thread_capture(parent_pid, heap);
-    allocator::vector<ThreadInfo> thread_info(heap);
-    allocator::vector<Mapping> mappings(heap);
-    allocator::vector<uintptr_t> refs(heap);
-
-    // ptrace all the threads
-    if (!thread_capture.CaptureThreads()) {
-      continue_parent_sem.Post();
-      return 1;
-    }
-
-    // collect register contents and stacks
-    if (!thread_capture.CapturedThreadInfo(thread_info)) {
-      continue_parent_sem.Post();
-      return 1;
-    }
-
-    // snapshot /proc/pid/maps
-    if (!ProcessMappings(parent_pid, mappings)) {
-      continue_parent_sem.Post();
-      return 1;
-    }
-
-    if (!BinderReferences(refs)) {
-      continue_parent_sem.Post();
-      return 1;
-    }
-
-    // malloc must be enabled to call fork, at_fork handlers take the same
-    // locks as ScopedDisableMalloc.  All threads are paused in ptrace, so
-    // memory state is still consistent.  Unfreeze the original thread so it
-    // can drop the malloc locks, it will block until the collection thread
-    // exits.
-    thread_capture.ReleaseThread(parent_tid);
-    continue_parent_sem.Post();
-
-    // fork a process to do the heap walking
-    int ret = fork();
-    if (ret < 0) {
-      return 1;
-    } else if (ret == 0) {
-      /////////////////////////////////////////////
-      // Heap walker process
-      /////////////////////////////////////////////
-      // Examine memory state in the child using the data collected above and
-      // the CoW snapshot of the process memory contents.
-
-      if (!pipe.OpenSender()) {
-        _exit(1);
-      }
-
-      MemUnreachable unreachable{parent_pid, heap};
-
-      if (!unreachable.CollectAllocations(thread_info, mappings, refs)) {
-        _exit(2);
-      }
-      size_t num_allocations = unreachable.Allocations();
-      size_t allocation_bytes = unreachable.AllocationBytes();
-
-      allocator::vector<Leak> leaks{heap};
-
-      size_t num_leaks = 0;
-      size_t leak_bytes = 0;
-      bool ok = unreachable.GetUnreachableMemory(leaks, limit, &num_leaks, &leak_bytes);
-
-      ok = ok && pipe.Sender().Send(num_allocations);
-      ok = ok && pipe.Sender().Send(allocation_bytes);
-      ok = ok && pipe.Sender().Send(num_leaks);
-      ok = ok && pipe.Sender().Send(leak_bytes);
-      ok = ok && pipe.Sender().SendVector(leaks);
-
-      if (!ok) {
-        _exit(3);
-      }
-
-      _exit(0);
-    } else {
-      // Nothing left to do in the collection thread, return immediately,
-      // releasing all the captured threads.
-      MEM_ALOGI("collection thread done");
-      return 0;
-    }
-  }};
-
-  /////////////////////////////////////////////
-  // Original thread
-  /////////////////////////////////////////////
-
-  {
-    // Disable malloc to get a consistent view of memory
-    ScopedDisableMalloc disable_malloc;
-
-    // Start the collection thread
-    thread.Start();
-
-    // Wait for the collection thread to signal that it is ready to fork the
-    // heap walker process.
-    continue_parent_sem.Wait(30s);
-
-    // Re-enable malloc so the collection thread can fork.
-  }
-
-  // Wait for the collection thread to exit
-  int ret = thread.Join();
-  if (ret != 0) {
-    return false;
-  }
-
-  // Get a pipe from the heap walker process.  Transferring a new pipe fd
-  // ensures no other forked processes can have it open, so when the heap
-  // walker process dies the remote side of the pipe will close.
-  if (!pipe.OpenReceiver()) {
-    return false;
-  }
-
-  bool ok = true;
-  ok = ok && pipe.Receiver().Receive(&info.num_allocations);
-  ok = ok && pipe.Receiver().Receive(&info.allocation_bytes);
-  ok = ok && pipe.Receiver().Receive(&info.num_leaks);
-  ok = ok && pipe.Receiver().Receive(&info.leak_bytes);
-  ok = ok && pipe.Receiver().ReceiveVector(info.leaks);
-  if (!ok) {
-    return false;
-  }
-
-  MEM_ALOGI("unreachable memory detection done");
-  MEM_ALOGE("%zu bytes in %zu allocation%s unreachable out of %zu bytes in %zu allocation%s",
-            info.leak_bytes, info.num_leaks, plural(info.num_leaks), info.allocation_bytes,
-            info.num_allocations, plural(info.num_allocations));
-  return true;
-}
-
-std::string Leak::ToString(bool log_contents) const {
-  std::ostringstream oss;
-
-  oss << "  " << std::dec << size;
-  oss << " bytes unreachable at ";
-  oss << std::hex << begin;
-  oss << std::endl;
-  if (referenced_count > 0) {
-    oss << std::dec;
-    oss << "   referencing " << referenced_size << " unreachable bytes";
-    oss << " in " << referenced_count << " allocation" << plural(referenced_count);
-    oss << std::endl;
-  }
-  if (similar_count > 0) {
-    oss << std::dec;
-    oss << "   and " << similar_size << " similar unreachable bytes";
-    oss << " in " << similar_count << " allocation" << plural(similar_count);
-    oss << std::endl;
-    if (similar_referenced_count > 0) {
-      oss << "   referencing " << similar_referenced_size << " unreachable bytes";
-      oss << " in " << similar_referenced_count << " allocation" << plural(similar_referenced_count);
-      oss << std::endl;
-    }
-  }
-
-  if (log_contents) {
-    const int bytes_per_line = 16;
-    const size_t bytes = std::min(size, contents_length);
-
-    if (bytes == size) {
-      oss << "   contents:" << std::endl;
-    } else {
-      oss << "   first " << bytes << " bytes of contents:" << std::endl;
-    }
-
-    for (size_t i = 0; i < bytes; i += bytes_per_line) {
-      oss << "   " << std::hex << begin + i << ": ";
-      size_t j;
-      oss << std::setfill('0');
-      for (j = i; j < bytes && j < i + bytes_per_line; j++) {
-        oss << std::setw(2) << static_cast<int>(contents[j]) << " ";
-      }
-      oss << std::setfill(' ');
-      for (; j < i + bytes_per_line; j++) {
-        oss << "   ";
-      }
-      for (j = i; j < bytes && j < i + bytes_per_line; j++) {
-        char c = contents[j];
-        if (c < ' ' || c >= 0x7f) {
-          c = '.';
-        }
-        oss << c;
-      }
-      oss << std::endl;
-    }
-  }
-  if (backtrace.num_frames > 0) {
-    oss << backtrace_string(backtrace.frames, backtrace.num_frames);
-  }
-
-  return oss.str();
-}
-
-std::string UnreachableMemoryInfo::ToString(bool log_contents) const {
-  std::ostringstream oss;
-  oss << "  " << leak_bytes << " bytes in ";
-  oss << num_leaks << " unreachable allocation" << plural(num_leaks);
-  oss << std::endl;
-  oss << "  ABI: '" ABI_STRING "'" << std::endl;
-  oss << std::endl;
-
-  for (auto it = leaks.begin(); it != leaks.end(); it++) {
-    oss << it->ToString(log_contents);
-    oss << std::endl;
-  }
-
-  return oss.str();
-}
-
-UnreachableMemoryInfo::~UnreachableMemoryInfo() {
-  // Clear the memory that holds the leaks, otherwise the next attempt to
-  // detect leaks may find the old data (for example in the jemalloc tcache)
-  // and consider all the leaks to be referenced.
-  memset(leaks.data(), 0, leaks.capacity() * sizeof(Leak));
-
-  std::vector<Leak> tmp;
-  leaks.swap(tmp);
-
-  // Disable and re-enable malloc to flush the jemalloc tcache to make sure
-  // there are no copies of the leaked pointer addresses there.
-  malloc_disable();
-  malloc_enable();
-}
-
-std::string GetUnreachableMemoryString(bool log_contents, size_t limit) {
-  UnreachableMemoryInfo info;
-  if (!GetUnreachableMemory(info, limit)) {
-    return "Failed to get unreachable memory\n"
-           "If you are trying to get unreachable memory from a system app\n"
-           "(like com.android.systemui), disable selinux first using\n"
-           "setenforce 0\n";
-  }
-
-  return info.ToString(log_contents);
-}
-
-}  // namespace android
-
-bool LogUnreachableMemory(bool log_contents, size_t limit) {
-  android::UnreachableMemoryInfo info;
-  if (!android::GetUnreachableMemory(info, limit)) {
-    return false;
-  }
-
-  for (auto it = info.leaks.begin(); it != info.leaks.end(); it++) {
-    MEM_ALOGE("%s", it->ToString(log_contents).c_str());
-  }
-  return true;
-}
-
-bool NoLeaks() {
-  android::UnreachableMemoryInfo info;
-  if (!android::GetUnreachableMemory(info, 0)) {
-    return false;
-  }
-
-  return info.num_leaks == 0;
-}
diff --git a/libmemunreachable/OWNERS b/libmemunreachable/OWNERS
deleted file mode 100644
index 9127a93..0000000
--- a/libmemunreachable/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-ccross@google.com
-cferris@google.com
diff --git a/libmemunreachable/ProcessMappings.cpp b/libmemunreachable/ProcessMappings.cpp
deleted file mode 100644
index 8e1be4c..0000000
--- a/libmemunreachable/ProcessMappings.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <android-base/unique_fd.h>
-#include <procinfo/process_map.h>
-
-#include "ProcessMappings.h"
-
-namespace android {
-
-struct ReadMapCallback {
-  ReadMapCallback(allocator::vector<Mapping>& mappings) : mappings_(mappings) {}
-
-  void operator()(uint64_t start, uint64_t end, uint16_t flags, uint64_t, ino_t,
-                  const char* name) const {
-    mappings_.emplace_back(start, end, flags & PROT_READ, flags & PROT_WRITE, flags & PROT_EXEC,
-                           name);
-  }
-
-  allocator::vector<Mapping>& mappings_;
-};
-
-bool ProcessMappings(pid_t pid, allocator::vector<Mapping>& mappings) {
-  char map_buffer[1024];
-  snprintf(map_buffer, sizeof(map_buffer), "/proc/%d/maps", pid);
-  android::base::unique_fd fd(open(map_buffer, O_RDONLY));
-  if (fd == -1) {
-    return false;
-  }
-  allocator::string content(mappings.get_allocator());
-  ssize_t n;
-  while ((n = TEMP_FAILURE_RETRY(read(fd, map_buffer, sizeof(map_buffer)))) > 0) {
-    content.append(map_buffer, n);
-  }
-  ReadMapCallback callback(mappings);
-  return android::procinfo::ReadMapFileContent(&content[0], callback);
-}
-
-}  // namespace android
diff --git a/libmemunreachable/ProcessMappings.h b/libmemunreachable/ProcessMappings.h
deleted file mode 100644
index 94da69b..0000000
--- a/libmemunreachable/ProcessMappings.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_PROCESS_MAPPING_H_
-#define LIBMEMUNREACHABLE_PROCESS_MAPPING_H_
-
-#include <string.h>
-
-#include "Allocator.h"
-
-namespace android {
-
-struct Mapping {
-  uintptr_t begin;
-  uintptr_t end;
-  bool read;
-  bool write;
-  bool execute;
-  char name[96];
-
-  Mapping() {}
-  Mapping(uintptr_t begin, uintptr_t end, bool read, bool write, bool execute, const char* name)
-      : begin(begin), end(end), read(read), write(write), execute(execute) {
-    strlcpy(this->name, name, sizeof(this->name));
-  }
-};
-
-// This function is not re-entrant since it uses a static buffer for
-// the line data.
-bool ProcessMappings(pid_t pid, allocator::vector<Mapping>& mappings);
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_PROCESS_MAPPING_H_
diff --git a/libmemunreachable/PtracerThread.cpp b/libmemunreachable/PtracerThread.cpp
deleted file mode 100644
index d2fca49..0000000
--- a/libmemunreachable/PtracerThread.cpp
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <pthread.h>
-#include <sched.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/prctl.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include "android-base/macros.h"
-
-#include "PtracerThread.h"
-#include "log.h"
-
-namespace android {
-
-class Stack {
- public:
-  explicit Stack(size_t size) : size_(size) {
-    int prot = PROT_READ | PROT_WRITE;
-    int flags = MAP_PRIVATE | MAP_ANONYMOUS;
-    page_size_ = sysconf(_SC_PAGE_SIZE);
-    size_ += page_size_ * 2;  // guard pages
-    base_ = mmap(NULL, size_, prot, flags, -1, 0);
-    if (base_ == MAP_FAILED) {
-      base_ = NULL;
-      size_ = 0;
-      return;
-    }
-    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, base_, size_, "libmemunreachable stack");
-    mprotect(base_, page_size_, PROT_NONE);
-    mprotect(top(), page_size_, PROT_NONE);
-  };
-  ~Stack() { munmap(base_, size_); };
-  void* top() {
-    return reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(base_) + size_ - page_size_);
-  };
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Stack);
-
-  void* base_;
-  size_t size_;
-  size_t page_size_;
-};
-
-PtracerThread::PtracerThread(const std::function<int()>& func) : child_pid_(0) {
-  stack_ = std::make_unique<Stack>(PTHREAD_STACK_MIN);
-  if (stack_->top() == nullptr) {
-    MEM_LOG_ALWAYS_FATAL("failed to mmap child stack: %s", strerror(errno));
-  }
-
-  func_ = std::function<int()>{[&, func]() -> int {
-    // In the child thread, lock and unlock the mutex to wait for the parent
-    // to finish setting up for the child thread
-    std::unique_lock<std::mutex> lk(m_);
-    lk.unlock();
-    _exit(func());
-  }};
-}
-
-PtracerThread::~PtracerThread() {
-  Kill();
-  Join();
-  ClearTracer();
-  stack_ = nullptr;
-}
-
-bool PtracerThread::Start() {
-  std::unique_lock<std::mutex> lk(m_);
-
-  // Convert from void(*)(void*) to lambda with captures
-  auto proxy = [](void* arg) -> int {
-    prctl(PR_SET_NAME, "libmemunreachable ptrace thread");
-    return (*reinterpret_cast<std::function<int()>*>(arg))();
-  };
-
-  // See README.md for why we create the child process this way
-  child_pid_ = clone(proxy, stack_->top(), CLONE_VM | CLONE_FS | CLONE_FILES /*|CLONE_UNTRACED*/,
-                     reinterpret_cast<void*>(&func_));
-  if (child_pid_ < 0) {
-    MEM_ALOGE("failed to clone child: %s", strerror(errno));
-    return false;
-  }
-
-  SetTracer(child_pid_);
-
-  lk.unlock();
-
-  return true;
-}
-
-int PtracerThread::Join() {
-  if (child_pid_ == -1) {
-    return -1;
-  }
-  int status;
-  int ret = TEMP_FAILURE_RETRY(waitpid(child_pid_, &status, __WALL));
-  if (ret < 0) {
-    MEM_ALOGE("waitpid %d failed: %s", child_pid_, strerror(errno));
-    return -1;
-  }
-
-  child_pid_ = -1;
-
-  if (WIFEXITED(status)) {
-    return WEXITSTATUS(status);
-  } else if (WIFSIGNALED(status)) {
-    return -WTERMSIG(status);
-  } else {
-    MEM_ALOGE("unexpected status %x", status);
-    return -1;
-  }
-}
-
-void PtracerThread::Kill() {
-  if (child_pid_ == -1) {
-    return;
-  }
-
-  syscall(SYS_tkill, child_pid_, SIGKILL);
-}
-
-void PtracerThread::SetTracer(pid_t tracer_pid) {
-  prctl(PR_SET_PTRACER, tracer_pid);
-}
-
-void PtracerThread::ClearTracer() {
-  prctl(PR_SET_PTRACER, 0);
-}
-
-}  // namespace android
diff --git a/libmemunreachable/PtracerThread.h b/libmemunreachable/PtracerThread.h
deleted file mode 100644
index 4f9c420..0000000
--- a/libmemunreachable/PtracerThread.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_PTRACER_THREAD_H_
-#define LIBMEMUNREACHABLE_PTRACER_THREAD_H_
-
-#include <functional>
-#include <mutex>
-
-#include "android-base/macros.h"
-
-#include "Allocator.h"
-
-namespace android {
-
-class Stack;
-
-// PtracerThread is similar to std::thread, except that it creates a "thread"
-// that can ptrace the other threads.  The thread is actually a separate
-// process, with its own thread group, but shares address space and fds with
-// the parent.
-class PtracerThread {
- public:
-  explicit PtracerThread(const std::function<int()>& func);
-  ~PtracerThread();
-  bool Start();
-  int Join();
-
- private:
-  void SetTracer(pid_t);
-  void ClearTracer();
-  void Kill();
-  DISALLOW_COPY_AND_ASSIGN(PtracerThread);
-  std::unique_ptr<Stack> stack_;
-  std::function<int()> func_;
-  std::mutex m_;
-  pid_t child_pid_;
-};
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_PTRACER_THREAD_H_
diff --git a/libmemunreachable/README.md b/libmemunreachable/README.md
deleted file mode 100644
index 9cc0c9b..0000000
--- a/libmemunreachable/README.md
+++ /dev/null
@@ -1,92 +0,0 @@
-libmemunreachable
-================
-
-Introduction
---------------
-libmemunreachable is a zero-overhead native memory leak detector.  It uses an imprecise mark-and-sweep garbage collector pass over all native memory, reporting any unreachable blocks as leaks.  It is similar to the [Heap Checker from tcmalloc](http://htmlpreview.github.io/?https://github.com/gperftools/gperftools/blob/master/doc/heap_checker.html), but with a few key differences to remove the overhead.  Instead of instrumenting every call to malloc and free, it queries the allocator (jemalloc) for active allocations when leak detection is requested.  In addition, it performs a very short stop-the-world data collection on the main process, and then forks a copy of the process to perform the mark-and-sweep, minimizing disruption to the original process.
-
-In the default (zero-overhead) mode, the returned data on leaks is limited to the address, approximate (upper bound) size, and the the first 32 bytes of the contents of the leaked allocation.  If malloc_debug backtraces are enabled they will be included in the leak information, but backtracing allocations requires significant overhead.
-
-----------
-
-Usage
--------
-
-### In Android apps ###
-
-libmemunreachble is loaded by zygote and can be triggered with `dumpsys -t 600 meminfo --unreachable [process]`.
-
-To enable malloc\_debug backtraces on allocations for a single app process on a userdebug device, use:
-```
-adb root
-adb shell setprop libc.debug.malloc.program app_process
-adb shell setprop wrap.[process] "\$\@"
-adb shell setprop libc.debug.malloc.options backtrace=4
-```
-
-Kill and restart the app, trigger the leak, and then run `dumpsys -t 600 meminfo --unreachable [process]`.
-
-To disable malloc\_debug:
-```
-adb shell setprop libc.debug.malloc.options "''"
-adb shell setprop libc.debug.malloc.program "''"
-adb shell setprop wrap.[process]  "''"
-```
-
-### C interface ###
-
-#### `bool LogUnreachableMemory(bool log_contents, size_t limit)` ####
-Writes a description of leaked memory to the log.  A summary is always written, followed by details of up to `limit` leaks.  If `log_contents` is `true`, details include up to 32 bytes of the contents of each leaked allocation.
-Returns true if leak detection succeeded.
-
-#### `bool NoLeaks()` ####
-Returns `true` if no unreachable memory was found.
-
-### C++ interface ###
-
-#### `bool GetUnreachableMemory(UnreachableMemoryInfo& info, size_t limit = 100)` ####
-Updates an `UnreachableMemoryInfo` object with information on leaks, including details on up to `limit` leaks.  Returns true if leak detection succeeded.
-
-#### `std::string GetUnreachableMemoryString(bool log_contents = false, size_t limit = 100)` ####
-Returns a description of leaked memory.  A summary is always written, followed by details of up to `limit` leaks.  If `log_contents` is `true`, details include up to 32 bytes of the contents of each leaked allocation.
-Returns true if leak detection succeeded.
-
-Implementation
--------------------
-The sequence of steps required to perform a leak detection pass is divided into three processes - the original process, the collection process, and the sweeper process.
-
- 1. *Original process*: Leak detection is requested by calling `GetUnreachableMemory()`
- 2. Allocations are disabled using `malloc_disable()`
- 3. The collection process is spawned.  The collection process, created using clone, is similar to a normal `fork()` child process, except that it shares the address space of the parent - any writes by the original process are visible to the collection process, and vice-versa. If we forked instead of using clone, the address space might get out of sync with observed post-ptrace thread state, since it takes some time to pause the parent.
- 4. *Collection process*: All threads in the original process are paused with `ptrace()`.
- 5. Registers contents, active stack areas, and memory mapping information are collected.
- 6. *Original process*: Allocations are re-enabled using `malloc_enable()`, but all threads are still paused with `ptrace()`.
- 7. *Collection process*: The sweeper process is spawned using a normal `fork()`.  The sweeper process has a copy of all memory from the original process, including all the data collected by the collection process.
- 8. Collection process releases all threads from `ptrace` and exits
- 9. *Original process*: All threads continue, the thread that called `GetUnreachableMemory()` blocks waiting for leak data over a pipe.
- 10. *Sweeper process*: A list of all active allocations is produced by examining the memory mappings and calling `malloc_iterate()` on any heap mappings.
- 11. A list of all roots is produced from globals (.data and .bss sections of binaries), and registers and stacks from each thread.
- 12. The mark-and-sweep pass is performed starting from roots.
- 13. Unmarked allocations are sent over the pipe back to the original process.
-
-----------
-
-
-Components
----------------
-- `MemUnreachable.cpp`: Entry points, implements the sequencing described above.
-- `PtracerThread.cpp`: Used to clone the collection process with shared address space.
-- `ThreadCapture.cpp`: Pauses threads in the main process and collects register contents.
-- `ProcessMappings.cpp`: Collects snapshots of `/proc/pid/maps`.
-- `HeapWalker.cpp`: Performs the mark-and-sweep pass over active allocations.
-- `LeakPipe.cpp`: transfers data describing leaks from the sweeper process to the original process.
-
-
-Heap allocator requirements
-----------------------------------
-libmemunreachable requires a small interface to the allocator in order to collect information about active allocations.
-
- - `malloc_disable()`: prevent any thread from mutating internal allocator state.
- - `malloc enable()`: re-enable allocations in all threads.
- - `malloc_iterate()`: call a callback on each active allocation in a given heap region.
- - `malloc_backtrace()`: return the backtrace from when the allocation at the given address was allocated, if it was collected.
diff --git a/libmemunreachable/ScopedAlarm.h b/libmemunreachable/ScopedAlarm.h
deleted file mode 100644
index bb50b9e..0000000
--- a/libmemunreachable/ScopedAlarm.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_SCOPED_ALARM_H_
-#define LIBMEMUNREACHABLE_SCOPED_ALARM_H_
-
-#include <signal.h>
-#include <sys/time.h>
-
-#include <chrono>
-#include <functional>
-
-namespace android {
-
-class ScopedAlarm {
- public:
-  ScopedAlarm(std::chrono::microseconds us, std::function<void()> func) {
-    func_ = func;
-    struct sigaction oldact {};
-    struct sigaction act {};
-    act.sa_handler = [](int) { ScopedAlarm::func_(); };
-    sigaction(SIGALRM, &act, &oldact);
-
-    std::chrono::seconds s = std::chrono::duration_cast<std::chrono::seconds>(us);
-    itimerval t = itimerval{};
-    t.it_value.tv_sec = s.count();
-    t.it_value.tv_usec = (us - s).count();
-    setitimer(ITIMER_REAL, &t, NULL);
-  }
-  ~ScopedAlarm() {
-    itimerval t = itimerval{};
-    setitimer(ITIMER_REAL, &t, NULL);
-    struct sigaction act {};
-    act.sa_handler = SIG_DFL;
-    sigaction(SIGALRM, &act, NULL);
-  }
-
- private:
-  static std::function<void()> func_;
-};
-
-}  // namespace android
-
-#endif
diff --git a/libmemunreachable/ScopedDisableMalloc.h b/libmemunreachable/ScopedDisableMalloc.h
deleted file mode 100644
index 655e826..0000000
--- a/libmemunreachable/ScopedDisableMalloc.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_SCOPED_DISABLE_MALLOC_H_
-#define LIBMEMUNREACHABLE_SCOPED_DISABLE_MALLOC_H_
-
-#include <memory>
-
-#include "android-base/macros.h"
-
-#include "ScopedAlarm.h"
-#include "bionic.h"
-#include "log.h"
-
-namespace android {
-
-class DisableMallocGuard {
- public:
-  DisableMallocGuard() : disabled_(false) {}
-  ~DisableMallocGuard() { Enable(); }
-
-  void Disable() {
-    if (!disabled_) {
-      malloc_disable();
-      disabled_ = true;
-    }
-  }
-
-  void Enable() {
-    if (disabled_) {
-      malloc_enable();
-      disabled_ = false;
-    }
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DisableMallocGuard);
-  bool disabled_;
-};
-
-// Any calls to malloc or free from this thread will deadlock as long as this
-// object is in scope.  Calls to malloc from other threads may succeed (for
-// example if the allocation is satisfied out of the thread's tcache), or may
-// block until the object is destroyed.
-//
-// Don't call fork() while malloc is disabled, it needs the same locks held
-// here.
-class ScopedDisableMalloc {
- public:
-  ScopedDisableMalloc() { disable_malloc_.Disable(); }
-
-  ~ScopedDisableMalloc() { disable_malloc_.Enable(); }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ScopedDisableMalloc);
-  DisableMallocGuard disable_malloc_;
-};
-
-class ScopedDisableMallocTimeout {
- public:
-  explicit ScopedDisableMallocTimeout(
-      std::chrono::milliseconds timeout = std::chrono::milliseconds(2000))
-      : timeout_(timeout), timed_out_(false), disable_malloc_() {
-    Disable();
-  }
-
-  ~ScopedDisableMallocTimeout() { Enable(); }
-
-  bool timed_out() { return timed_out_; }
-
-  void Enable() {
-    disable_malloc_.Enable();
-    alarm_ = nullptr;
-  }
-
-  void Disable() {
-    // set up the alarm before disabling malloc so unique_ptr can be used
-    alarm_ = std::make_unique<ScopedAlarm>(timeout_, [&]() {
-      disable_malloc_.Enable();
-      timed_out_ = true;
-    });
-
-    disable_malloc_.Disable();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ScopedDisableMallocTimeout);
-  std::chrono::milliseconds timeout_;
-  bool timed_out_;
-  std::unique_ptr<ScopedAlarm> alarm_;
-  DisableMallocGuard disable_malloc_;
-};
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_SCOPED_DISABLE_MALLOC_H_
diff --git a/libmemunreachable/ScopedPipe.h b/libmemunreachable/ScopedPipe.h
deleted file mode 100644
index b9dead5..0000000
--- a/libmemunreachable/ScopedPipe.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_SCOPED_PIPE_H_
-#define LIBMEMUNREACHABLE_SCOPED_PIPE_H_
-
-#include <unistd.h>
-
-#include "log.h"
-
-namespace android {
-
-class ScopedPipe {
- public:
-  ScopedPipe() : pipefd_{-1, -1} {
-    int ret = pipe2(pipefd_, O_CLOEXEC);
-    if (ret < 0) {
-      MEM_LOG_ALWAYS_FATAL("failed to open pipe");
-    }
-  }
-  ~ScopedPipe() { Close(); }
-
-  ScopedPipe(ScopedPipe&& other) noexcept {
-    SetReceiver(other.ReleaseReceiver());
-    SetSender(other.ReleaseSender());
-  }
-
-  ScopedPipe& operator=(ScopedPipe&& other) noexcept {
-    SetReceiver(other.ReleaseReceiver());
-    SetSender(other.ReleaseSender());
-    return *this;
-  }
-
-  void CloseReceiver() { close(ReleaseReceiver()); }
-
-  void CloseSender() { close(ReleaseSender()); }
-
-  void Close() {
-    CloseReceiver();
-    CloseSender();
-  }
-
-  int Receiver() { return pipefd_[0]; }
-  int Sender() { return pipefd_[1]; }
-
-  int ReleaseReceiver() {
-    int ret = Receiver();
-    SetReceiver(-1);
-    return ret;
-  }
-
-  int ReleaseSender() {
-    int ret = Sender();
-    SetSender(-1);
-    return ret;
-  }
-
- private:
-  void SetReceiver(int fd) { pipefd_[0] = fd; };
-  void SetSender(int fd) { pipefd_[1] = fd; };
-
-  int pipefd_[2];
-};
-
-}  // namespace android
-
-#endif
diff --git a/libmemunreachable/ScopedSignalHandler.h b/libmemunreachable/ScopedSignalHandler.h
deleted file mode 100644
index ef4473f..0000000
--- a/libmemunreachable/ScopedSignalHandler.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_SCOPED_SIGNAL_HANDLER_H_
-#define LIBMEMUNREACHABLE_SCOPED_SIGNAL_HANDLER_H_
-
-#include <errno.h>
-#include <signal.h>
-
-#include <functional>
-
-#include "android-base/macros.h"
-
-#include "Allocator.h"
-#include "log.h"
-
-namespace android {
-
-class ScopedSignalHandler {
- public:
-  using Fn = std::function<void(ScopedSignalHandler&, int, siginfo_t*, void*)>;
-
-  explicit ScopedSignalHandler(Allocator<ScopedSignalHandler> allocator) : signal_(-1) {
-    if (handler_map_ == nullptr) {
-      Allocator<SignalFnMap> map_allocator = allocator;
-      handler_map_ = map_allocator.make_unique(allocator);
-    }
-  }
-  ~ScopedSignalHandler() { reset(); }
-
-  template <class F>
-  void install(int signal, F&& f) {
-    if (signal_ != -1) MEM_LOG_ALWAYS_FATAL("ScopedSignalHandler already installed");
-
-    if (handler_map_->find(signal) != handler_map_->end()) {
-      MEM_LOG_ALWAYS_FATAL("ScopedSignalHandler already installed for %d", signal);
-    }
-
-    (*handler_map_)[signal] =
-        SignalFn([=](int signal, siginfo_t* si, void* uctx) { f(*this, signal, si, uctx); });
-
-    struct sigaction act {};
-    act.sa_sigaction = [](int signal, siginfo_t* si, void* uctx) {
-      ((*handler_map_)[signal])(signal, si, uctx);
-    };
-    act.sa_flags = SA_SIGINFO;
-
-    int ret = sigaction(signal, &act, &old_act_);
-    if (ret < 0) {
-      MEM_LOG_ALWAYS_FATAL("failed to install segfault handler: %s", strerror(errno));
-    }
-
-    signal_ = signal;
-  }
-
-  void reset() {
-    if (signal_ != -1) {
-      int ret = sigaction(signal_, &old_act_, NULL);
-      if (ret < 0) {
-        MEM_ALOGE("failed to uninstall segfault handler");
-      }
-
-      handler_map_->erase(signal_);
-      if (handler_map_->empty()) {
-        handler_map_.reset();
-      }
-      signal_ = -1;
-    }
-  }
-
- private:
-  using SignalFn = std::function<void(int, siginfo_t*, void*)>;
-  using SignalFnMap = allocator::unordered_map<int, SignalFn>;
-  DISALLOW_COPY_AND_ASSIGN(ScopedSignalHandler);
-  int signal_;
-  struct sigaction old_act_;
-  static Allocator<SignalFnMap>::unique_ptr handler_map_;
-};
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_SCOPED_SIGNAL_HANDLER_H_
diff --git a/libmemunreachable/Semaphore.h b/libmemunreachable/Semaphore.h
deleted file mode 100644
index cd73972..0000000
--- a/libmemunreachable/Semaphore.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_SEMAPHORE_H_
-#define LIBMEMUNREACHABLE_SEMAPHORE_H_
-
-#include <chrono>
-#include <mutex>
-
-#include "android-base/macros.h"
-
-namespace android {
-
-class Semaphore {
- public:
-  explicit Semaphore(int count = 0) : count_(count) {}
-  ~Semaphore() = default;
-
-  void Wait(std::chrono::milliseconds ms) {
-    std::unique_lock<std::mutex> lk(m_);
-    cv_.wait_for(lk, ms, [&] {
-      if (count_ > 0) {
-        count_--;
-        return true;
-      }
-      return false;
-    });
-  }
-  void Post() {
-    {
-      std::lock_guard<std::mutex> lk(m_);
-      count_++;
-    }
-    cv_.notify_one();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Semaphore);
-
-  int count_;
-  std::mutex m_;
-  std::condition_variable cv_;
-};
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_SEMAPHORE_H_
diff --git a/libmemunreachable/Tarjan.h b/libmemunreachable/Tarjan.h
deleted file mode 100644
index f3ab652..0000000
--- a/libmemunreachable/Tarjan.h
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// Based on system/update_engine/payload_generator/tarjan.cc
-
-#ifndef LIBMEMUNREACHABLE_TARJAN_H_
-#define LIBMEMUNREACHABLE_TARJAN_H_
-
-#include <assert.h>
-#include <algorithm>
-
-#include "Allocator.h"
-
-namespace android {
-
-template <class T>
-class Node {
- public:
-  allocator::set<Node<T>*> references_in;
-  allocator::set<Node<T>*> references_out;
-  size_t index;
-  size_t lowlink;
-
-  T* ptr;
-
-  Node(T* ptr, Allocator<Node> allocator)
-      : references_in(allocator), references_out(allocator), ptr(ptr){};
-  Node(Node&& rhs) noexcept = default;
-  void Edge(Node<T>* ref) {
-    references_out.emplace(ref);
-    ref->references_in.emplace(this);
-  }
-  template <class F>
-  void Foreach(F&& f) {
-    for (auto& node : references_out) {
-      f(node->ptr);
-    }
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Node<T>);
-};
-
-template <class T>
-using Graph = allocator::vector<Node<T>*>;
-
-template <class T>
-using SCC = allocator::vector<Node<T>*>;
-
-template <class T>
-using SCCList = allocator::vector<SCC<T>>;
-
-template <class T>
-class TarjanAlgorithm {
- public:
-  explicit TarjanAlgorithm(Allocator<void> allocator)
-      : index_(0), stack_(allocator), components_(allocator) {}
-
-  void Execute(Graph<T>& graph, SCCList<T>& out);
-
- private:
-  static constexpr size_t UNDEFINED_INDEX = static_cast<size_t>(-1);
-  void Tarjan(Node<T>* vertex, Graph<T>& graph);
-
-  size_t index_;
-  allocator::vector<Node<T>*> stack_;
-  SCCList<T> components_;
-};
-
-template <class T>
-void TarjanAlgorithm<T>::Execute(Graph<T>& graph, SCCList<T>& out) {
-  stack_.clear();
-  components_.clear();
-  index_ = 0;
-  for (auto& it : graph) {
-    it->index = UNDEFINED_INDEX;
-    it->lowlink = UNDEFINED_INDEX;
-  }
-
-  for (auto& it : graph) {
-    if (it->index == UNDEFINED_INDEX) {
-      Tarjan(it, graph);
-    }
-  }
-  out.swap(components_);
-}
-
-template <class T>
-void TarjanAlgorithm<T>::Tarjan(Node<T>* vertex, Graph<T>& graph) {
-  assert(vertex->index == UNDEFINED_INDEX);
-  vertex->index = index_;
-  vertex->lowlink = index_;
-  index_++;
-  stack_.push_back(vertex);
-  for (auto& it : vertex->references_out) {
-    Node<T>* vertex_next = it;
-    if (vertex_next->index == UNDEFINED_INDEX) {
-      Tarjan(vertex_next, graph);
-      vertex->lowlink = std::min(vertex->lowlink, vertex_next->lowlink);
-    } else if (std::find(stack_.begin(), stack_.end(), vertex_next) != stack_.end()) {
-      vertex->lowlink = std::min(vertex->lowlink, vertex_next->index);
-    }
-  }
-  if (vertex->lowlink == vertex->index) {
-    SCC<T> component{components_.get_allocator()};
-    Node<T>* other_vertex;
-    do {
-      other_vertex = stack_.back();
-      stack_.pop_back();
-      component.push_back(other_vertex);
-    } while (other_vertex != vertex && !stack_.empty());
-
-    components_.emplace_back(component);
-  }
-}
-
-template <class T>
-void Tarjan(Graph<T>& graph, SCCList<T>& out) {
-  TarjanAlgorithm<T> tarjan{graph.get_allocator()};
-  tarjan.Execute(graph, out);
-}
-
-}  // namespace android
-
-#endif  // LIBMEMUNREACHABLE_TARJAN_H_
diff --git a/libmemunreachable/ThreadCapture.cpp b/libmemunreachable/ThreadCapture.cpp
deleted file mode 100644
index 45eb55d..0000000
--- a/libmemunreachable/ThreadCapture.cpp
+++ /dev/null
@@ -1,367 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "ThreadCapture.h"
-
-#include <elf.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <sys/ptrace.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <map>
-#include <memory>
-#include <set>
-#include <vector>
-
-#include <android-base/unique_fd.h>
-
-#include "Allocator.h"
-#include "log.h"
-
-namespace android {
-
-// bionic interfaces used:
-// atoi
-// strlcat
-// writev
-
-// bionic interfaces reimplemented to avoid allocation:
-// getdents64
-
-// Convert a pid > 0 to a string.  sprintf might allocate, so we can't use it.
-// Returns a pointer somewhere in buf to a null terminated string, or NULL
-// on error.
-static char* pid_to_str(char* buf, size_t len, pid_t pid) {
-  if (pid <= 0) {
-    return nullptr;
-  }
-
-  char* ptr = buf + len - 1;
-  *ptr = 0;
-  while (pid > 0) {
-    ptr--;
-    if (ptr < buf) {
-      return nullptr;
-    }
-    *ptr = '0' + (pid % 10);
-    pid /= 10;
-  }
-
-  return ptr;
-}
-
-class ThreadCaptureImpl {
- public:
-  ThreadCaptureImpl(pid_t pid, Allocator<ThreadCaptureImpl>& allocator);
-  ~ThreadCaptureImpl() {}
-  bool ListThreads(TidList& tids);
-  bool CaptureThreads();
-  bool ReleaseThreads();
-  bool ReleaseThread(pid_t tid);
-  bool CapturedThreadInfo(ThreadInfoList& threads);
-  void InjectTestFunc(std::function<void(pid_t)>&& f) { inject_test_func_ = f; }
-
- private:
-  int CaptureThread(pid_t tid);
-  bool ReleaseThread(pid_t tid, unsigned int signal);
-  int PtraceAttach(pid_t tid);
-  void PtraceDetach(pid_t tid, unsigned int signal);
-  bool PtraceThreadInfo(pid_t tid, ThreadInfo& thread_info);
-
-  allocator::map<pid_t, unsigned int> captured_threads_;
-  Allocator<ThreadCaptureImpl> allocator_;
-  pid_t pid_;
-  std::function<void(pid_t)> inject_test_func_;
-};
-
-ThreadCaptureImpl::ThreadCaptureImpl(pid_t pid, Allocator<ThreadCaptureImpl>& allocator)
-    : captured_threads_(allocator), allocator_(allocator), pid_(pid) {}
-
-bool ThreadCaptureImpl::ListThreads(TidList& tids) {
-  tids.clear();
-
-  char pid_buf[11];
-  char path[256] = "/proc/";
-  char* pid_str = pid_to_str(pid_buf, sizeof(pid_buf), pid_);
-  if (!pid_str) {
-    return false;
-  }
-  strlcat(path, pid_str, sizeof(path));
-  strlcat(path, "/task", sizeof(path));
-
-  android::base::unique_fd fd(open(path, O_CLOEXEC | O_DIRECTORY | O_RDONLY));
-  if (fd == -1) {
-    MEM_ALOGE("failed to open %s: %s", path, strerror(errno));
-    return false;
-  }
-
-  struct linux_dirent64 {
-    uint64_t d_ino;
-    int64_t d_off;
-    uint16_t d_reclen;
-    char d_type;
-    char d_name[];
-  } __attribute((packed));
-  char dirent_buf[4096];
-  ssize_t nread;
-  do {
-    nread = syscall(SYS_getdents64, fd.get(), dirent_buf, sizeof(dirent_buf));
-    if (nread < 0) {
-      MEM_ALOGE("failed to get directory entries from %s: %s", path, strerror(errno));
-      return false;
-    } else if (nread > 0) {
-      ssize_t off = 0;
-      while (off < nread) {
-        linux_dirent64* dirent = reinterpret_cast<linux_dirent64*>(dirent_buf + off);
-        off += dirent->d_reclen;
-        pid_t tid = atoi(dirent->d_name);
-        if (tid <= 0) {
-          continue;
-        }
-        tids.push_back(tid);
-      }
-    }
-
-  } while (nread != 0);
-
-  return true;
-}
-
-bool ThreadCaptureImpl::CaptureThreads() {
-  TidList tids{allocator_};
-
-  bool found_new_thread;
-  do {
-    if (!ListThreads(tids)) {
-      ReleaseThreads();
-      return false;
-    }
-
-    found_new_thread = false;
-
-    for (auto it = tids.begin(); it != tids.end(); it++) {
-      auto captured = captured_threads_.find(*it);
-      if (captured == captured_threads_.end()) {
-        if (CaptureThread(*it) < 0) {
-          ReleaseThreads();
-          return false;
-        }
-        found_new_thread = true;
-      }
-    }
-  } while (found_new_thread);
-
-  return true;
-}
-
-// Detatches from a thread, delivering signal if nonzero, logs on error
-void ThreadCaptureImpl::PtraceDetach(pid_t tid, unsigned int signal) {
-  void* sig_ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(signal));
-  if (ptrace(PTRACE_DETACH, tid, NULL, sig_ptr) < 0 && errno != ESRCH) {
-    MEM_ALOGE("failed to detach from thread %d of process %d: %s", tid, pid_, strerror(errno));
-  }
-}
-
-// Attaches to and pauses thread.
-// Returns 1 on attach, 0 on tid not found, -1 and logs on error
-int ThreadCaptureImpl::PtraceAttach(pid_t tid) {
-  int ret = ptrace(PTRACE_SEIZE, tid, NULL, NULL);
-  if (ret < 0) {
-    MEM_ALOGE("failed to attach to thread %d of process %d: %s", tid, pid_, strerror(errno));
-    return -1;
-  }
-
-  if (inject_test_func_) {
-    inject_test_func_(tid);
-  }
-
-  if (ptrace(PTRACE_INTERRUPT, tid, 0, 0) < 0) {
-    if (errno == ESRCH) {
-      return 0;
-    } else {
-      MEM_ALOGE("failed to interrupt thread %d of process %d: %s", tid, pid_, strerror(errno));
-      PtraceDetach(tid, 0);
-      return -1;
-    }
-  }
-  return 1;
-}
-
-bool ThreadCaptureImpl::PtraceThreadInfo(pid_t tid, ThreadInfo& thread_info) {
-  thread_info.tid = tid;
-
-  const unsigned int max_num_regs = 128;  // larger than number of registers on any device
-  uintptr_t regs[max_num_regs];
-  struct iovec iovec;
-  iovec.iov_base = &regs;
-  iovec.iov_len = sizeof(regs);
-
-  if (ptrace(PTRACE_GETREGSET, tid, reinterpret_cast<void*>(NT_PRSTATUS), &iovec)) {
-    MEM_ALOGE("ptrace getregset for thread %d of process %d failed: %s", tid, pid_, strerror(errno));
-    return false;
-  }
-
-  unsigned int num_regs = iovec.iov_len / sizeof(uintptr_t);
-  thread_info.regs.assign(&regs[0], &regs[num_regs]);
-
-  const int sp =
-#if defined(__x86_64__)
-      offsetof(struct pt_regs, rsp) / sizeof(uintptr_t)
-#elif defined(__i386__)
-      offsetof(struct pt_regs, esp) / sizeof(uintptr_t)
-#elif defined(__arm__)
-      offsetof(struct pt_regs, ARM_sp) / sizeof(uintptr_t)
-#elif defined(__aarch64__)
-      offsetof(struct user_pt_regs, sp) / sizeof(uintptr_t)
-#elif defined(__mips__) || defined(__mips64__)
-      offsetof(struct pt_regs, regs[29]) / sizeof(uintptr_t)
-#else
-#error Unrecognized architecture
-#endif
-      ;
-
-  // TODO(ccross): use /proc/tid/status or /proc/pid/maps to get start_stack
-
-  thread_info.stack = std::pair<uintptr_t, uintptr_t>(regs[sp], 0);
-
-  return true;
-}
-
-int ThreadCaptureImpl::CaptureThread(pid_t tid) {
-  int ret = PtraceAttach(tid);
-  if (ret <= 0) {
-    return ret;
-  }
-
-  int status = 0;
-  if (TEMP_FAILURE_RETRY(waitpid(tid, &status, __WALL)) < 0) {
-    MEM_ALOGE("failed to wait for pause of thread %d of process %d: %s", tid, pid_, strerror(errno));
-    PtraceDetach(tid, 0);
-    return -1;
-  }
-
-  if (!WIFSTOPPED(status)) {
-    MEM_ALOGE("thread %d of process %d was not paused after waitpid, killed?", tid, pid_);
-    return 0;
-  }
-
-  unsigned int resume_signal = 0;
-
-  unsigned int signal = WSTOPSIG(status);
-  if ((status >> 16) == PTRACE_EVENT_STOP) {
-    switch (signal) {
-      case SIGSTOP:
-      case SIGTSTP:
-      case SIGTTIN:
-      case SIGTTOU:
-        // group-stop signals
-        break;
-      case SIGTRAP:
-        // normal ptrace interrupt stop
-        break;
-      default:
-        MEM_ALOGE("unexpected signal %d with PTRACE_EVENT_STOP for thread %d of process %d", signal,
-                  tid, pid_);
-        return -1;
-    }
-  } else {
-    // signal-delivery-stop
-    resume_signal = signal;
-  }
-
-  captured_threads_[tid] = resume_signal;
-  return 1;
-}
-
-bool ThreadCaptureImpl::ReleaseThread(pid_t tid) {
-  auto it = captured_threads_.find(tid);
-  if (it == captured_threads_.end()) {
-    return false;
-  }
-  return ReleaseThread(it->first, it->second);
-}
-
-bool ThreadCaptureImpl::ReleaseThread(pid_t tid, unsigned int signal) {
-  PtraceDetach(tid, signal);
-  return true;
-}
-
-bool ThreadCaptureImpl::ReleaseThreads() {
-  bool ret = true;
-  for (auto it = captured_threads_.begin(); it != captured_threads_.end();) {
-    if (ReleaseThread(it->first, it->second)) {
-      it = captured_threads_.erase(it);
-    } else {
-      it++;
-      ret = false;
-    }
-  }
-  return ret;
-}
-
-bool ThreadCaptureImpl::CapturedThreadInfo(ThreadInfoList& threads) {
-  threads.clear();
-
-  for (auto it = captured_threads_.begin(); it != captured_threads_.end(); it++) {
-    ThreadInfo t{0, allocator::vector<uintptr_t>(allocator_), std::pair<uintptr_t, uintptr_t>(0, 0)};
-    if (!PtraceThreadInfo(it->first, t)) {
-      return false;
-    }
-    threads.push_back(t);
-  }
-  return true;
-}
-
-ThreadCapture::ThreadCapture(pid_t pid, Allocator<ThreadCapture> allocator) {
-  Allocator<ThreadCaptureImpl> impl_allocator = allocator;
-  impl_ = impl_allocator.make_unique(pid, impl_allocator);
-}
-
-ThreadCapture::~ThreadCapture() {}
-
-bool ThreadCapture::ListThreads(TidList& tids) {
-  return impl_->ListThreads(tids);
-}
-
-bool ThreadCapture::CaptureThreads() {
-  return impl_->CaptureThreads();
-}
-
-bool ThreadCapture::ReleaseThreads() {
-  return impl_->ReleaseThreads();
-}
-
-bool ThreadCapture::ReleaseThread(pid_t tid) {
-  return impl_->ReleaseThread(tid);
-}
-
-bool ThreadCapture::CapturedThreadInfo(ThreadInfoList& threads) {
-  return impl_->CapturedThreadInfo(threads);
-}
-
-void ThreadCapture::InjectTestFunc(std::function<void(pid_t)>&& f) {
-  impl_->InjectTestFunc(std::forward<std::function<void(pid_t)>>(f));
-}
-
-}  // namespace android
diff --git a/libmemunreachable/ThreadCapture.h b/libmemunreachable/ThreadCapture.h
deleted file mode 100644
index 961cb60..0000000
--- a/libmemunreachable/ThreadCapture.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_THREAD_CAPTURE_H_
-#define LIBMEMUNREACHABLE_THREAD_CAPTURE_H_
-
-#include <utility>
-
-#include "Allocator.h"
-
-namespace android {
-
-struct ThreadInfo {
-  pid_t tid;
-  allocator::vector<uintptr_t> regs;
-  std::pair<uintptr_t, uintptr_t> stack;
-};
-
-using TidList = allocator::vector<pid_t>;
-using ThreadInfoList = allocator::vector<ThreadInfo>;
-
-class ThreadCaptureImpl;
-
-class ThreadCapture {
- public:
-  ThreadCapture(pid_t pid, Allocator<ThreadCapture> allocator);
-  ~ThreadCapture();
-
-  bool ListThreads(TidList& tids);
-  bool CaptureThreads();
-  bool ReleaseThreads();
-  bool ReleaseThread(pid_t tid);
-  bool CapturedThreadInfo(ThreadInfoList& threads);
-  void InjectTestFunc(std::function<void(pid_t)>&& f);
-
- private:
-  ThreadCapture(const ThreadCapture&) = delete;
-  void operator=(const ThreadCapture&) = delete;
-
-  Allocator<ThreadCaptureImpl>::unique_ptr impl_;
-};
-
-}  // namespace android
-
-#endif
diff --git a/libmemunreachable/bionic.h b/libmemunreachable/bionic.h
deleted file mode 100644
index dd1ec79..0000000
--- a/libmemunreachable/bionic.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_BIONIC_H_
-#define LIBMEMUNREACHABLE_BIONIC_H_
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/cdefs.h>
-
-__BEGIN_DECLS
-
-/* Exported from bionic */
-extern void malloc_disable();
-extern void malloc_enable();
-extern int malloc_iterate(uintptr_t base, size_t size,
-                          void (*callback)(uintptr_t base, size_t size, void* arg), void* arg);
-extern ssize_t malloc_backtrace(void* pointer, uintptr_t* frames, size_t frame_count);
-
-__END_DECLS
-
-#endif  // LIBMEMUNREACHABLE_BIONIC_H_
diff --git a/libmemunreachable/include/memunreachable/memunreachable.h b/libmemunreachable/include/memunreachable/memunreachable.h
deleted file mode 100644
index c028eab..0000000
--- a/libmemunreachable/include/memunreachable/memunreachable.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_MEMUNREACHABLE_H_
-#define LIBMEMUNREACHABLE_MEMUNREACHABLE_H_
-
-#include <string.h>
-#include <sys/cdefs.h>
-
-#ifdef __cplusplus
-
-#include <string>
-#include <vector>
-
-namespace android {
-
-struct Leak {
-  uintptr_t begin;
-  size_t size;
-
-  size_t referenced_count;
-  size_t referenced_size;
-
-  size_t similar_count;
-  size_t similar_size;
-  size_t similar_referenced_count;
-  size_t similar_referenced_size;
-
-  size_t total_size;
-
-  static const size_t contents_length = 32;
-  char contents[contents_length];
-
-  struct Backtrace {
-    size_t num_frames;
-
-    static const size_t max_frames = 16;
-    uintptr_t frames[max_frames];
-  } backtrace;
-
-  std::string ToString(bool log_contents) const;
-};
-
-struct UnreachableMemoryInfo {
-  std::vector<Leak> leaks;
-  size_t num_leaks;
-  size_t leak_bytes;
-  size_t num_allocations;
-  size_t allocation_bytes;
-
-  UnreachableMemoryInfo() {}
-  ~UnreachableMemoryInfo();
-
-  std::string ToString(bool log_contents) const;
-};
-
-bool GetUnreachableMemory(UnreachableMemoryInfo& info, size_t limit = 100);
-
-std::string GetUnreachableMemoryString(bool log_contents = false, size_t limit = 100);
-
-}  // namespace android
-
-#endif
-
-__BEGIN_DECLS
-
-bool LogUnreachableMemory(bool log_contents, size_t limit);
-
-bool NoLeaks();
-
-__END_DECLS
-
-#endif  // LIBMEMUNREACHABLE_MEMUNREACHABLE_H_
diff --git a/libmemunreachable/log.h b/libmemunreachable/log.h
deleted file mode 100644
index 44c5f85..0000000
--- a/libmemunreachable/log.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef LIBMEMUNREACHABLE_LOG_H_
-#define LIBMEMUNREACHABLE_LOG_H_
-
-#define LOG_TAG "libmemunreachable"
-
-#if defined(__ANDROID__)
-
-#include <async_safe/log.h>
-
-#define MEM_ALOGE(...) async_safe_format_log(ANDROID_LOG_ERROR, LOG_TAG, ##__VA_ARGS__)
-#define MEM_ALOGW(...) async_safe_format_log(ANDROID_LOG_WARN, LOG_TAG, ##__VA_ARGS__)
-#define MEM_ALOGI(...) async_safe_format_log(ANDROID_LOG_INFO, LOG_TAG, ##__VA_ARGS__)
-#define MEM_ALOGV_IMPL(...) async_safe_format_log(ANDROID_LOG_VERBOSE, LOG_TAG, ##__VA_ARGS__)
-
-#ifdef NDEBUG
-#define MEM_ALOGV(...)             \
-  do {                             \
-    if (0) {                       \
-      MEM_ALOGV_IMPL(__VA_ARGS__); \
-    }                              \
-  } while (0)
-#else
-#define MEM_ALOGV(...) MEM_ALOGV_IMPL(__VA_ARGS__)
-#endif
-
-#define MEM_LOG_ALWAYS_FATAL(...) async_safe_fatal(__VA_ARGS__)
-
-#else
-
-#include <log/log.h>
-
-#define MEM_ALOGW ALOGW
-#define MEM_ALOGE ALOGE
-#define MEM_ALOGV ALOGV
-#define MEM_ALOGI ALOGI
-
-#define MEM_LOG_ALWAYS_FATAL LOG_ALWAYS_FATAL
-
-#endif
-
-#endif  // LIBMEMUNREACHABLE_LOG_H_
diff --git a/libmemunreachable/tests/Allocator_test.cpp b/libmemunreachable/tests/Allocator_test.cpp
deleted file mode 100644
index 8991a7b..0000000
--- a/libmemunreachable/tests/Allocator_test.cpp
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <Allocator.h>
-
-#include <ScopedDisableMalloc.h>
-#include <gtest/gtest.h>
-
-namespace android {
-
-std::function<void()> ScopedAlarm::func_;
-
-class AllocatorTest : public testing::Test {
- protected:
-  AllocatorTest() : heap(), disable_malloc_() {}
-  virtual void SetUp() { heap_count = 0; }
-  virtual void TearDown() {
-    ASSERT_EQ(heap_count, 0);
-    ASSERT_TRUE(heap.empty());
-    ASSERT_FALSE(disable_malloc_.timed_out());
-  }
-  Heap heap;
-
- private:
-  ScopedDisableMallocTimeout disable_malloc_;
-};
-
-TEST_F(AllocatorTest, simple) {
-  Allocator<char[100]> allocator(heap);
-  void* ptr = allocator.allocate();
-  ASSERT_TRUE(ptr != NULL);
-  allocator.deallocate(ptr);
-}
-
-TEST_F(AllocatorTest, multiple) {
-  Allocator<char[100]> allocator(heap);
-  void* ptr1 = allocator.allocate();
-  ASSERT_TRUE(ptr1 != NULL);
-  void* ptr2 = allocator.allocate();
-  ASSERT_TRUE(ptr2 != NULL);
-  ASSERT_NE(ptr1, ptr2);
-  allocator.deallocate(ptr1);
-  void* ptr3 = allocator.allocate();
-  ASSERT_EQ(ptr1, ptr3);
-  allocator.deallocate(ptr3);
-  allocator.deallocate(ptr2);
-}
-
-TEST_F(AllocatorTest, many) {
-  const int num = 4096;
-  const int size = 128;
-  Allocator<char[size]> allocator(heap);
-  void* ptr[num];
-  for (int i = 0; i < num; i++) {
-    ptr[i] = allocator.allocate();
-    memset(ptr[i], 0xaa, size);
-    *(reinterpret_cast<unsigned char*>(ptr[i])) = i;
-  }
-
-  for (int i = 0; i < num; i++) {
-    for (int j = 0; j < num; j++) {
-      if (i != j) {
-        ASSERT_NE(ptr[i], ptr[j]);
-      }
-    }
-  }
-
-  for (int i = 0; i < num; i++) {
-    ASSERT_EQ(*(reinterpret_cast<unsigned char*>(ptr[i])), i & 0xFF);
-    allocator.deallocate(ptr[i]);
-  }
-}
-
-TEST_F(AllocatorTest, large) {
-  const size_t size = 1024 * 1024;
-  Allocator<char[size]> allocator(heap);
-  void* ptr = allocator.allocate();
-  memset(ptr, 0xaa, size);
-  allocator.deallocate(ptr);
-}
-
-TEST_F(AllocatorTest, many_large) {
-  const int num = 128;
-  const int size = 1024 * 1024;
-  Allocator<char[size]> allocator(heap);
-  void* ptr[num];
-  for (int i = 0; i < num; i++) {
-    ptr[i] = allocator.allocate();
-    memset(ptr[i], 0xaa, size);
-    *(reinterpret_cast<unsigned char*>(ptr[i])) = i;
-  }
-
-  for (int i = 0; i < num; i++) {
-    ASSERT_EQ(*(reinterpret_cast<unsigned char*>(ptr[i])), i & 0xFF);
-    allocator.deallocate(ptr[i]);
-  }
-}
-
-TEST_F(AllocatorTest, copy) {
-  Allocator<char[100]> a(heap);
-  Allocator<char[200]> b = a;
-  Allocator<char[300]> c(b);
-  Allocator<char[100]> d(a);
-  Allocator<char[100]> e(heap);
-
-  ASSERT_EQ(a, b);
-  ASSERT_EQ(a, c);
-  ASSERT_EQ(a, d);
-  ASSERT_EQ(a, e);
-
-  void* ptr1 = a.allocate();
-  void* ptr2 = b.allocate();
-  void* ptr3 = c.allocate();
-  void* ptr4 = d.allocate();
-
-  b.deallocate(ptr1);
-  d.deallocate(ptr2);
-  a.deallocate(ptr3);
-  c.deallocate(ptr4);
-}
-
-TEST_F(AllocatorTest, stl_vector) {
-  auto v = allocator::vector<int>(Allocator<int>(heap));
-  for (int i = 0; i < 1024; i++) {
-    v.push_back(i);
-  }
-  for (int i = 0; i < 1024; i++) {
-    ASSERT_EQ(v[i], i);
-  }
-  v.clear();
-}
-
-TEST_F(AllocatorTest, stl_list) {
-  auto v = allocator::list<int>(Allocator<int>(heap));
-  for (int i = 0; i < 1024; i++) {
-    v.push_back(i);
-  }
-  int i = 0;
-  for (auto iter = v.begin(); iter != v.end(); iter++, i++) {
-    ASSERT_EQ(*iter, i);
-  }
-  v.clear();
-}
-
-TEST_F(AllocatorTest, shared) {
-  Allocator<int> allocator(heap);
-
-  Allocator<int>::shared_ptr ptr = allocator.make_shared(0);
-  {
-    auto ptr2 = ptr;  // NOLINT, test copy of ptr
-  }
-  ASSERT_NE(ptr, nullptr);
-}
-
-TEST_F(AllocatorTest, unique) {
-  Allocator<int> allocator(heap);
-
-  Allocator<int>::unique_ptr ptr = allocator.make_unique(0);
-
-  ASSERT_NE(ptr, nullptr);
-}
-
-}  // namespace android
diff --git a/libmemunreachable/tests/AndroidTest.xml b/libmemunreachable/tests/AndroidTest.xml
deleted file mode 100644
index 604c0ec..0000000
--- a/libmemunreachable/tests/AndroidTest.xml
+++ /dev/null
@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2017 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<configuration description="Config for memunreachable_test">
-    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
-        <option name="cleanup" value="true" />
-        <option name="push" value="memunreachable_test->/data/local/tmp/memunreachable_test" />
-    </target_preparer>
-    <option name="test-suite-tag" value="apct" />
-    <test class="com.android.tradefed.testtype.GTest" >
-        <option name="native-test-device-path" value="/data/local/tmp" />
-        <option name="module-name" value="memunreachable_test" />
-    </test>
-</configuration>
diff --git a/libmemunreachable/tests/Binder_test.cpp b/libmemunreachable/tests/Binder_test.cpp
deleted file mode 100644
index eaf7652..0000000
--- a/libmemunreachable/tests/Binder_test.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <signal.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <binder/Binder.h>
-#include <binder/IBinder.h>
-#include <binder/IServiceManager.h>
-#include <binder/Parcel.h>
-#include <binder/ProcessState.h>
-
-#include <gtest/gtest.h>
-
-#include "Allocator.h"
-#include "Binder.h"
-
-namespace android {
-
-static const String16 service_name("test.libmemunreachable_binder");
-
-// Provides a service that will hold a strong reference to any remote binder
-// object, so that the test can verify that a remote strong reference is
-// visible to libmemunreachable.
-class BinderService : public BBinder {
- public:
-  BinderService() = default;
-  virtual ~BinderService() = default;
-
-  virtual status_t onTransact(uint32_t /*code*/, const Parcel& data, Parcel* reply,
-                              uint32_t /*flags*/ = 0) {
-    reply->writeStrongBinder(ref);
-    ref = data.readStrongBinder();
-    return 0;
-  }
-
- private:
-  sp<IBinder> ref;
-};
-
-class BinderObject : public BBinder {
- public:
-  BinderObject() = default;
-  ~BinderObject() = default;
-};
-
-// Forks a subprocess that registers a BinderService with the global binder
-// servicemanager.  Requires root permissions.
-class ServiceProcess {
- public:
-  ServiceProcess() : child_(0) {}
-  ~ServiceProcess() { Stop(); }
-
-  bool Run() {
-    pid_t ret = fork();
-    if (ret < 0) {
-      return false;
-    } else if (ret == 0) {
-      // child
-      _exit(Service());
-    } else {
-      // parent
-      child_ = ret;
-      return true;
-    }
-  }
-
-  bool Stop() {
-    if (child_ > 0) {
-      if (kill(child_, SIGTERM)) {
-        return false;
-      }
-      int status = 0;
-      if (TEMP_FAILURE_RETRY(waitpid(child_, &status, 0)) != child_) {
-        return false;
-      }
-      child_ = 0;
-      return WIFEXITED(status) && WEXITSTATUS(status) == 0;
-    }
-
-    return true;
-  }
-
-  int Service() {
-    sp<ProcessState> proc{ProcessState::self()};
-    sp<IServiceManager> sm = defaultServiceManager();
-    if (sm == nullptr) {
-      fprintf(stderr, "Failed to get service manager\n");
-      return 1;
-    }
-    // This step requires root permissions
-    if (sm->addService(service_name, new BinderService()) != OK) {
-      fprintf(stderr, "Failed to add test service\n");
-      return 1;
-    }
-    proc->startThreadPool();
-    pause();
-    return 0;
-  }
-
- private:
-  pid_t child_;
-};
-
-class MemunreachableBinderTest : public ::testing::Test {
- protected:
-  ServiceProcess service_process_;
-};
-
-// Tests that a local binder object with a remote strong reference is visible
-// through the libmemunreachable BinderReferences interface, which uses the
-// getBinderKernelReferences method in libbinder.  Starts a BinderService
-// through ServiceProcess as a remote service to hold the strong reference.
-TEST_F(MemunreachableBinderTest, binder) {
-  ASSERT_EQ(static_cast<uid_t>(0), getuid()) << "This test must be run as root.";
-
-  ServiceProcess service_process;
-  ASSERT_TRUE(service_process.Run());
-
-  sp<IServiceManager> sm = defaultServiceManager();
-  ASSERT_TRUE(sm != nullptr);
-
-  // A small sleep allows the service to start, which
-  // prevents a longer sleep in getService.
-  usleep(100000);
-
-  sp<IBinder> service = sm->getService(service_name);
-  ASSERT_TRUE(service != nullptr);
-
-  sp<IBinder> binder{new BinderObject()};
-
-  Parcel send;
-  Parcel reply;
-
-  send.writeStrongBinder(binder);
-  status_t rv = service->transact(0, send, &reply);
-  ASSERT_EQ(static_cast<status_t>(OK), rv);
-
-  Heap heap;
-  allocator::vector<uintptr_t> refs{heap};
-
-  ASSERT_TRUE(BinderReferences(refs));
-
-  bool found_ref = false;
-  for (auto ref : refs) {
-    if (ref == reinterpret_cast<uintptr_t>(binder.get())) {
-      found_ref = true;
-    }
-  }
-
-  ASSERT_TRUE(found_ref);
-}
-
-}  // namespace android
diff --git a/libmemunreachable/tests/DisableMalloc_test.cpp b/libmemunreachable/tests/DisableMalloc_test.cpp
deleted file mode 100644
index f446719..0000000
--- a/libmemunreachable/tests/DisableMalloc_test.cpp
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/time.h>
-
-#include <chrono>
-#include <functional>
-
-#include <ScopedDisableMalloc.h>
-#include <gtest/gtest.h>
-
-using namespace std::chrono_literals;
-
-namespace android {
-
-class DisableMallocTest : public ::testing::Test {
- protected:
-  void alarm(std::chrono::microseconds us) {
-    std::chrono::seconds s = std::chrono::duration_cast<std::chrono::seconds>(us);
-    itimerval t = itimerval();
-    t.it_value.tv_sec = s.count();
-    t.it_value.tv_usec = (us - s).count();
-    setitimer(ITIMER_REAL, &t, NULL);
-  }
-};
-
-TEST_F(DisableMallocTest, reenable) {
-  ASSERT_EXIT(
-      {
-        alarm(100ms);
-        void* ptr1 = malloc(128);
-        ASSERT_NE(ptr1, nullptr);
-        free(ptr1);
-        { ScopedDisableMalloc disable_malloc; }
-        void* ptr2 = malloc(128);
-        ASSERT_NE(ptr2, nullptr);
-        free(ptr2);
-        _exit(1);
-      },
-      ::testing::ExitedWithCode(1), "");
-}
-
-TEST_F(DisableMallocTest, deadlock_allocate) {
-  ASSERT_DEATH(
-      {
-        void* ptr = malloc(128);
-        ASSERT_NE(ptr, nullptr);
-        free(ptr);
-        {
-          alarm(100ms);
-          ScopedDisableMalloc disable_malloc;
-          void* ptr = malloc(128);
-          ASSERT_NE(ptr, nullptr);
-          free(ptr);
-        }
-      },
-      "");
-}
-
-TEST_F(DisableMallocTest, deadlock_new) {
-  ASSERT_DEATH(
-      {
-        // C++ allows `new Foo` to be replaced with a stack allocation or merged
-        // with future `new Foo` expressions, provided certain conditions are
-        // met [expr.new/10]. None of this applies to `operator new(size_t)`.
-        void* ptr = ::operator new(1);
-        ASSERT_NE(ptr, nullptr);
-        ::operator delete(ptr);
-        {
-          alarm(100ms);
-          ScopedDisableMalloc disable_malloc;
-          void* ptr = ::operator new(1);
-          ASSERT_NE(ptr, nullptr);
-          ::operator delete(ptr);
-        }
-      },
-      "");
-}
-
-TEST_F(DisableMallocTest, deadlock_delete) {
-  ASSERT_DEATH(
-      {
-        void* ptr = ::operator new(1);
-        ASSERT_NE(ptr, nullptr);
-        {
-          alarm(250ms);
-          ScopedDisableMalloc disable_malloc;
-          ::operator delete(ptr);
-        }
-      },
-      "");
-}
-
-TEST_F(DisableMallocTest, deadlock_free) {
-  ASSERT_DEATH(
-      {
-        void* ptr = malloc(128);
-        ASSERT_NE(ptr, nullptr);
-        {
-          alarm(100ms);
-          ScopedDisableMalloc disable_malloc;
-          free(ptr);
-        }
-      },
-      "");
-}
-
-TEST_F(DisableMallocTest, deadlock_fork) {
-  ASSERT_DEATH({
-    {
-      alarm(100ms);
-      ScopedDisableMalloc disable_malloc;
-      fork();
-}
-}, "");
-}
-
-}  // namespace android
diff --git a/libmemunreachable/tests/HeapWalker_test.cpp b/libmemunreachable/tests/HeapWalker_test.cpp
deleted file mode 100644
index 9610cd6..0000000
--- a/libmemunreachable/tests/HeapWalker_test.cpp
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include "HeapWalker.h"
-
-#include <ScopedDisableMalloc.h>
-#include <gtest/gtest.h>
-#include "Allocator.h"
-
-namespace android {
-
-class HeapWalkerTest : public ::testing::Test {
- public:
-  HeapWalkerTest() : disable_malloc_(), heap_() {}
-
-  void TearDown() {
-    ASSERT_TRUE(heap_.empty());
-    if (!HasFailure()) {
-      ASSERT_FALSE(disable_malloc_.timed_out());
-    }
-  }
-
- protected:
-  ScopedDisableMallocTimeout disable_malloc_;
-  Heap heap_;
-};
-
-TEST_F(HeapWalkerTest, allocation) {
-  HeapWalker heap_walker(heap_);
-  ASSERT_TRUE(heap_walker.Allocation(3, 4));
-  ASSERT_TRUE(heap_walker.Allocation(2, 3));
-  ASSERT_TRUE(heap_walker.Allocation(4, 5));
-  ASSERT_TRUE(heap_walker.Allocation(6, 7));
-  ASSERT_TRUE(heap_walker.Allocation(0, 1));
-}
-
-TEST_F(HeapWalkerTest, overlap) {
-  HeapWalker heap_walker(heap_);
-  ASSERT_TRUE(heap_walker.Allocation(2, 3));
-  ASSERT_TRUE(heap_walker.Allocation(3, 4));
-  ASSERT_FALSE(heap_walker.Allocation(2, 3));
-  ASSERT_FALSE(heap_walker.Allocation(1, 3));
-  ASSERT_FALSE(heap_walker.Allocation(1, 4));
-  ASSERT_FALSE(heap_walker.Allocation(1, 5));
-  ASSERT_FALSE(heap_walker.Allocation(3, 4));
-  ASSERT_FALSE(heap_walker.Allocation(3, 5));
-  ASSERT_TRUE(heap_walker.Allocation(4, 5));
-  ASSERT_TRUE(heap_walker.Allocation(1, 2));
-}
-
-TEST_F(HeapWalkerTest, zero) {
-  HeapWalker heap_walker(heap_);
-  ASSERT_TRUE(heap_walker.Allocation(2, 2));
-  ASSERT_FALSE(heap_walker.Allocation(2, 2));
-  ASSERT_TRUE(heap_walker.Allocation(3, 3));
-  ASSERT_TRUE(heap_walker.Allocation(1, 1));
-  ASSERT_FALSE(heap_walker.Allocation(2, 3));
-}
-
-TEST_F(HeapWalkerTest, mapping) {
-  HeapWalker heap_walker(heap_);
-  heap_walker.Mapping(2, 3);
-  heap_walker.Mapping(4, 5);
-  ASSERT_TRUE(heap_walker.Allocation(2, 3));
-  ASSERT_TRUE(heap_walker.Allocation(4, 5));
-  // space between mappings is not checked, but could be in the future
-  ASSERT_TRUE(heap_walker.Allocation(3, 4));
-
-  // re-enable malloc, ASSERT_DEATH may allocate
-  disable_malloc_.Enable();
-  ASSERT_DEATH({ heap_walker.Allocation(1, 2); }, "0x1-0x2.*outside.*0x2-0x5");
-  ASSERT_DEATH({ heap_walker.Allocation(1, 3); }, "0x1-0x3.*outside.*0x2-0x5");
-  ASSERT_DEATH({ heap_walker.Allocation(4, 6); }, "0x4-0x6.*outside.*0x2-0x5");
-  ASSERT_DEATH({ heap_walker.Allocation(5, 6); }, "0x5-0x6.*outside.*0x2-0x5");
-  ASSERT_DEATH({ heap_walker.Allocation(1, 6); }, "0x1-0x6.*outside.*0x2-0x5");
-}
-
-#define buffer_begin(buffer) reinterpret_cast<uintptr_t>(buffer)
-#define buffer_end(buffer) (reinterpret_cast<uintptr_t>(buffer) + sizeof(buffer))
-
-TEST_F(HeapWalkerTest, leak) {
-  void* buffer1[16]{};
-  char buffer2[16]{};
-  buffer1[0] = &buffer2[0] - sizeof(void*);
-  buffer1[1] = &buffer2[15] + sizeof(void*);
-
-  HeapWalker heap_walker(heap_);
-  heap_walker.Allocation(buffer_begin(buffer2), buffer_end(buffer2));
-
-  ASSERT_EQ(true, heap_walker.DetectLeaks());
-
-  allocator::vector<Range> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, heap_walker.Leaked(leaked, 100, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(1U, num_leaks);
-  EXPECT_EQ(16U, leaked_bytes);
-  ASSERT_EQ(1U, leaked.size());
-  EXPECT_EQ(buffer_begin(buffer2), leaked[0].begin);
-  EXPECT_EQ(buffer_end(buffer2), leaked[0].end);
-}
-
-TEST_F(HeapWalkerTest, live) {
-  const int from_buffer_entries = 4;
-  const int to_buffer_bytes = 16;
-
-  for (int i = 0; i < from_buffer_entries; i++) {
-    for (int j = 0; j < to_buffer_bytes; j++) {
-      void* buffer1[from_buffer_entries]{};
-      char buffer2[to_buffer_bytes]{};
-      buffer1[i] = &buffer2[j];
-
-      HeapWalker heap_walker(heap_);
-      heap_walker.Allocation(buffer_begin(buffer2), buffer_end(buffer2));
-      heap_walker.Root(buffer_begin(buffer1), buffer_end(buffer1));
-
-      ASSERT_EQ(true, heap_walker.DetectLeaks());
-
-      allocator::vector<Range> leaked(heap_);
-      size_t num_leaks = SIZE_MAX;
-      size_t leaked_bytes = SIZE_MAX;
-      ASSERT_EQ(true, heap_walker.Leaked(leaked, 100, &num_leaks, &leaked_bytes));
-
-      EXPECT_EQ(0U, num_leaks);
-      EXPECT_EQ(0U, leaked_bytes);
-      EXPECT_EQ(0U, leaked.size());
-    }
-  }
-}
-
-TEST_F(HeapWalkerTest, unaligned) {
-  const int from_buffer_entries = 4;
-  const int to_buffer_bytes = 16;
-  void* buffer1[from_buffer_entries]{};
-  char buffer2[to_buffer_bytes]{};
-
-  buffer1[1] = &buffer2;
-
-  for (unsigned int i = 0; i < sizeof(uintptr_t); i++) {
-    for (unsigned int j = 0; j < sizeof(uintptr_t); j++) {
-      HeapWalker heap_walker(heap_);
-      heap_walker.Allocation(buffer_begin(buffer2), buffer_end(buffer2));
-      heap_walker.Root(buffer_begin(buffer1) + i, buffer_end(buffer1) - j);
-
-      ASSERT_EQ(true, heap_walker.DetectLeaks());
-
-      allocator::vector<Range> leaked(heap_);
-      size_t num_leaks = SIZE_MAX;
-      size_t leaked_bytes = SIZE_MAX;
-      ASSERT_EQ(true, heap_walker.Leaked(leaked, 100, &num_leaks, &leaked_bytes));
-
-      EXPECT_EQ(0U, num_leaks);
-      EXPECT_EQ(0U, leaked_bytes);
-      EXPECT_EQ(0U, leaked.size());
-    }
-  }
-}
-
-TEST_F(HeapWalkerTest, cycle) {
-  void* buffer1;
-  void* buffer2;
-
-  buffer1 = &buffer2;
-  buffer2 = &buffer1;
-
-  HeapWalker heap_walker(heap_);
-  heap_walker.Allocation(buffer_begin(buffer1), buffer_end(buffer1));
-  heap_walker.Allocation(buffer_begin(buffer2), buffer_end(buffer2));
-
-  ASSERT_EQ(true, heap_walker.DetectLeaks());
-
-  allocator::vector<Range> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, heap_walker.Leaked(leaked, 100, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(2U, num_leaks);
-  EXPECT_EQ(2 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(2U, leaked.size());
-}
-
-TEST_F(HeapWalkerTest, segv) {
-  const size_t page_size = sysconf(_SC_PAGE_SIZE);
-  void* buffer1 = mmap(NULL, page_size, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-  ASSERT_NE(buffer1, nullptr);
-  void* buffer2;
-
-  buffer2 = &buffer1;
-
-  HeapWalker heap_walker(heap_);
-  heap_walker.Allocation(buffer_begin(buffer1), buffer_begin(buffer1) + page_size);
-  heap_walker.Root(buffer_begin(buffer2), buffer_end(buffer2));
-
-  ASSERT_EQ(true, heap_walker.DetectLeaks());
-
-  allocator::vector<Range> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, heap_walker.Leaked(leaked, 100, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(0U, num_leaks);
-  EXPECT_EQ(0U, leaked_bytes);
-  ASSERT_EQ(0U, leaked.size());
-}
-
-}  // namespace android
diff --git a/libmemunreachable/tests/HostMallocStub.cpp b/libmemunreachable/tests/HostMallocStub.cpp
deleted file mode 100644
index 0ef0487..0000000
--- a/libmemunreachable/tests/HostMallocStub.cpp
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "bionic.h"
-
-void malloc_disable() {}
-
-void malloc_enable() {}
diff --git a/libmemunreachable/tests/LeakFolding_test.cpp b/libmemunreachable/tests/LeakFolding_test.cpp
deleted file mode 100644
index f5b3631..0000000
--- a/libmemunreachable/tests/LeakFolding_test.cpp
+++ /dev/null
@@ -1,431 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "LeakFolding.h"
-#include "HeapWalker.h"
-
-#include <ScopedDisableMalloc.h>
-#include <gtest/gtest.h>
-#include "Allocator.h"
-
-namespace android {
-
-class LeakFoldingTest : public ::testing::Test {
- public:
-  LeakFoldingTest() : disable_malloc_(), heap_() {}
-
-  void TearDown() {
-    ASSERT_TRUE(heap_.empty());
-    if (!HasFailure()) {
-      ASSERT_FALSE(disable_malloc_.timed_out());
-    }
-  }
-
- protected:
-  ScopedDisableMallocTimeout disable_malloc_;
-  Heap heap_;
-};
-
-#define buffer_begin(buffer) reinterpret_cast<uintptr_t>(&(buffer)[0])
-#define buffer_end(buffer) (reinterpret_cast<uintptr_t>(&(buffer)[0]) + sizeof(buffer))
-#define ALLOCATION(heap_walker, buffer) \
-  ASSERT_EQ(true, (heap_walker).Allocation(buffer_begin(buffer), buffer_end(buffer)))
-
-TEST_F(LeakFoldingTest, one) {
-  void* buffer1[1] = {nullptr};
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(1U, num_leaks);
-  EXPECT_EQ(sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(1U, leaked.size());
-  EXPECT_EQ(0U, leaked[0].referenced_count);
-  EXPECT_EQ(0U, leaked[0].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, two) {
-  void* buffer1[1] = {nullptr};
-  void* buffer2[1] = {nullptr};
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(2U, num_leaks);
-  EXPECT_EQ(2 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(2U, leaked.size());
-  EXPECT_EQ(0U, leaked[0].referenced_count);
-  EXPECT_EQ(0U, leaked[0].referenced_size);
-  EXPECT_EQ(0U, leaked[1].referenced_count);
-  EXPECT_EQ(0U, leaked[1].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, dominator) {
-  void* buffer1[1];
-  void* buffer2[1] = {nullptr};
-
-  buffer1[0] = buffer2;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(2U, num_leaks);
-  EXPECT_EQ(2 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(1U, leaked.size());
-  EXPECT_EQ(1U, leaked[0].referenced_count);
-  EXPECT_EQ(sizeof(uintptr_t), leaked[0].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, cycle) {
-  void* buffer1[1];
-  void* buffer2[1];
-  void* buffer3[1];
-
-  buffer1[0] = buffer2;
-  buffer2[0] = buffer3;
-  buffer3[0] = buffer2;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-  ALLOCATION(heap_walker, buffer3);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(3U, num_leaks);
-  EXPECT_EQ(3 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(1U, leaked.size());
-  EXPECT_EQ(2U, leaked[0].referenced_count);
-  EXPECT_EQ(2 * sizeof(uintptr_t), leaked[0].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, dominator_cycle) {
-  void* buffer1[2] = {nullptr, nullptr};
-  void* buffer2[2];
-  void* buffer3[1] = {nullptr};
-
-  buffer1[0] = &buffer2;
-  buffer2[0] = &buffer1;
-  buffer2[1] = &buffer3;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-  ALLOCATION(heap_walker, buffer3);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(3U, num_leaks);
-  EXPECT_EQ(5 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(2U, leaked.size());
-
-  EXPECT_EQ(2U, leaked[0].referenced_count);
-  EXPECT_EQ(3 * sizeof(uintptr_t), leaked[0].referenced_size);
-  EXPECT_EQ(2U, leaked[1].referenced_count);
-  EXPECT_EQ(3 * sizeof(uintptr_t), leaked[1].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, two_cycles) {
-  void* buffer1[1];
-  void* buffer2[1];
-  void* buffer3[1];
-  void* buffer4[1];
-  void* buffer5[1];
-  void* buffer6[1];
-
-  buffer1[0] = buffer3;
-  buffer2[0] = buffer5;
-  buffer3[0] = buffer4;
-  buffer4[0] = buffer3;
-  buffer5[0] = buffer6;
-  buffer6[0] = buffer5;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-  ALLOCATION(heap_walker, buffer3);
-  ALLOCATION(heap_walker, buffer4);
-  ALLOCATION(heap_walker, buffer5);
-  ALLOCATION(heap_walker, buffer6);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(6U, num_leaks);
-  EXPECT_EQ(6 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(2U, leaked.size());
-  EXPECT_EQ(2U, leaked[0].referenced_count);
-  EXPECT_EQ(2 * sizeof(uintptr_t), leaked[0].referenced_size);
-  EXPECT_EQ(2U, leaked[1].referenced_count);
-  EXPECT_EQ(2 * sizeof(uintptr_t), leaked[1].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, two_dominator_cycles) {
-  void* buffer1[1];
-  void* buffer2[1];
-  void* buffer3[1];
-  void* buffer4[1];
-
-  buffer1[0] = buffer2;
-  buffer2[0] = buffer1;
-  buffer3[0] = buffer4;
-  buffer4[0] = buffer3;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-  ALLOCATION(heap_walker, buffer3);
-  ALLOCATION(heap_walker, buffer4);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(4U, num_leaks);
-  EXPECT_EQ(4 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(4U, leaked.size());
-  EXPECT_EQ(1U, leaked[0].referenced_count);
-  EXPECT_EQ(sizeof(uintptr_t), leaked[0].referenced_size);
-  EXPECT_EQ(1U, leaked[1].referenced_count);
-  EXPECT_EQ(sizeof(uintptr_t), leaked[1].referenced_size);
-  EXPECT_EQ(1U, leaked[2].referenced_count);
-  EXPECT_EQ(sizeof(uintptr_t), leaked[2].referenced_size);
-  EXPECT_EQ(1U, leaked[3].referenced_count);
-  EXPECT_EQ(sizeof(uintptr_t), leaked[3].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, giant_dominator_cycle) {
-  const size_t n = 1000;
-  void* buffer[n];
-
-  HeapWalker heap_walker(heap_);
-
-  for (size_t i = 0; i < n; i++) {
-    ASSERT_TRUE(heap_walker.Allocation(reinterpret_cast<uintptr_t>(&buffer[i]),
-                                       reinterpret_cast<uintptr_t>(&buffer[i + 1])));
-  }
-
-  for (size_t i = 0; i < n - 1; i++) {
-    buffer[i] = &buffer[i + 1];
-  }
-  buffer[n - 1] = &buffer[0];
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(n, num_leaks);
-  EXPECT_EQ(n * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(1000U, leaked.size());
-  EXPECT_EQ(n - 1, leaked[0].referenced_count);
-  EXPECT_EQ((n - 1) * sizeof(uintptr_t), leaked[0].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, giant_cycle) {
-  const size_t n = 1000;
-  void* buffer[n];
-  void* buffer1[1];
-
-  HeapWalker heap_walker(heap_);
-
-  for (size_t i = 0; i < n - 1; i++) {
-    buffer[i] = &buffer[i + 1];
-  }
-  buffer[n - 1] = &buffer[0];
-
-  buffer1[0] = &buffer[0];
-
-  for (size_t i = 0; i < n; i++) {
-    ASSERT_TRUE(heap_walker.Allocation(reinterpret_cast<uintptr_t>(&buffer[i]),
-                                       reinterpret_cast<uintptr_t>(&buffer[i + 1])));
-  }
-
-  ALLOCATION(heap_walker, buffer1);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(n + 1, num_leaks);
-  EXPECT_EQ((n + 1) * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(1U, leaked.size());
-  EXPECT_EQ(n, leaked[0].referenced_count);
-  EXPECT_EQ(n * sizeof(uintptr_t), leaked[0].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, multipath) {
-  void* buffer1[2];
-  void* buffer2[1];
-  void* buffer3[1];
-  void* buffer4[1] = {nullptr};
-
-  //    1
-  //   / \
-  //  v   v
-  //  2   3
-  //   \ /
-  //    v
-  //    4
-
-  buffer1[0] = &buffer2;
-  buffer1[1] = &buffer3;
-  buffer2[0] = &buffer4;
-  buffer3[0] = &buffer4;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-  ALLOCATION(heap_walker, buffer3);
-  ALLOCATION(heap_walker, buffer4);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(4U, num_leaks);
-  EXPECT_EQ(5 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(1U, leaked.size());
-  EXPECT_EQ(3U, leaked[0].referenced_count);
-  EXPECT_EQ(3 * sizeof(uintptr_t), leaked[0].referenced_size);
-}
-
-TEST_F(LeakFoldingTest, multicycle) {
-  void* buffer1[2]{};
-  void* buffer2[2]{};
-  void* buffer3[2]{};
-  void* buffer4[2]{};
-
-  //    1
-  //   / ^
-  //  v   \
-  //  2 -> 3
-  //   \   ^
-  //    v /
-  //     4
-
-  buffer1[0] = &buffer2;
-  buffer2[0] = &buffer3;
-  buffer2[1] = &buffer4;
-  buffer3[0] = &buffer1;
-  buffer4[0] = &buffer3;
-
-  HeapWalker heap_walker(heap_);
-
-  ALLOCATION(heap_walker, buffer1);
-  ALLOCATION(heap_walker, buffer2);
-  ALLOCATION(heap_walker, buffer3);
-  ALLOCATION(heap_walker, buffer4);
-
-  LeakFolding folding(heap_, heap_walker);
-
-  ASSERT_TRUE(folding.FoldLeaks());
-
-  allocator::vector<LeakFolding::Leak> leaked(heap_);
-  size_t num_leaks = 0;
-  size_t leaked_bytes = 0;
-  ASSERT_EQ(true, folding.Leaked(leaked, &num_leaks, &leaked_bytes));
-
-  EXPECT_EQ(4U, num_leaks);
-  EXPECT_EQ(8 * sizeof(uintptr_t), leaked_bytes);
-  ASSERT_EQ(4U, leaked.size());
-  EXPECT_EQ(3U, leaked[0].referenced_count);
-  EXPECT_EQ(6 * sizeof(uintptr_t), leaked[0].referenced_size);
-  EXPECT_EQ(3U, leaked[1].referenced_count);
-  EXPECT_EQ(6 * sizeof(uintptr_t), leaked[1].referenced_size);
-  EXPECT_EQ(3U, leaked[2].referenced_count);
-  EXPECT_EQ(6 * sizeof(uintptr_t), leaked[2].referenced_size);
-  EXPECT_EQ(3U, leaked[3].referenced_count);
-  EXPECT_EQ(6 * sizeof(uintptr_t), leaked[3].referenced_size);
-}
-
-}  // namespace android
diff --git a/libmemunreachable/tests/MemUnreachable_test.cpp b/libmemunreachable/tests/MemUnreachable_test.cpp
deleted file mode 100644
index bba0c6d..0000000
--- a/libmemunreachable/tests/MemUnreachable_test.cpp
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <fcntl.h>
-#include <stdlib.h>
-#include <sys/prctl.h>
-#include <unistd.h>
-
-#include <gtest/gtest.h>
-
-#include <memunreachable/memunreachable.h>
-
-#include "bionic.h"
-
-namespace android {
-
-class HiddenPointer {
- public:
-  // Since we're doing such a good job of hiding it, the static analyzer
-  // thinks that we're leaking this `malloc`. This is probably related to
-  // https://bugs.llvm.org/show_bug.cgi?id=34198. NOLINTNEXTLINE
-  explicit HiddenPointer(size_t size = 256) { Set(malloc(size)); }
-  ~HiddenPointer() { Free(); }
-  void* Get() { return reinterpret_cast<void*>(~ptr_); }
-  void Free() {
-    free(Get());
-    Set(nullptr);
-  }
-
- private:
-  void Set(void* ptr) { ptr_ = ~reinterpret_cast<uintptr_t>(ptr); }
-  volatile uintptr_t ptr_;
-};
-
-// Trick the compiler into thinking a value on the stack is still referenced.
-static void Ref(void** ptr) {
-  write(0, ptr, 0);
-}
-
-class MemunreachableTest : public ::testing::Test {
- protected:
-  virtual void SetUp() {
-    CleanStack(8192);
-    CleanTcache();
-  }
-
-  virtual void TearDown() {
-    CleanStack(8192);
-    CleanTcache();
-  }
-
-  // Allocate a buffer on the stack and zero it to make sure there are no
-  // stray pointers from old test runs.
-  void __attribute__((noinline)) CleanStack(size_t size) {
-    void* buf = alloca(size);
-    memset(buf, 0, size);
-    Ref(&buf);
-  }
-
-  // Disable and re-enable malloc to flush the jemalloc tcache to make sure
-  // there are stray pointers from old test runs there.
-  void CleanTcache() {
-    malloc_disable();
-    malloc_enable();
-  }
-};
-
-TEST_F(MemunreachableTest, clean) {
-  UnreachableMemoryInfo info;
-
-  ASSERT_TRUE(LogUnreachableMemory(true, 100));
-
-  ASSERT_TRUE(GetUnreachableMemory(info));
-  ASSERT_EQ(0U, info.leaks.size());
-}
-
-TEST_F(MemunreachableTest, stack) {
-  HiddenPointer hidden_ptr;
-
-  {
-    void* ptr = hidden_ptr.Get();
-    Ref(&ptr);
-
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-
-    ptr = nullptr;
-  }
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(1U, info.leaks.size());
-  }
-
-  hidden_ptr.Free();
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-}
-
-void* g_ptr;
-
-TEST_F(MemunreachableTest, global) {
-  HiddenPointer hidden_ptr;
-
-  g_ptr = hidden_ptr.Get();
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-
-  g_ptr = nullptr;
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(1U, info.leaks.size());
-  }
-
-  hidden_ptr.Free();
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-}
-
-TEST_F(MemunreachableTest, tls) {
-  HiddenPointer hidden_ptr;
-  pthread_key_t key;
-  pthread_key_create(&key, nullptr);
-
-  pthread_setspecific(key, hidden_ptr.Get());
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-
-  pthread_setspecific(key, nullptr);
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(1U, info.leaks.size());
-  }
-
-  hidden_ptr.Free();
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-
-  pthread_key_delete(key);
-}
-
-TEST_F(MemunreachableTest, twice) {
-  HiddenPointer hidden_ptr;
-
-  {
-    void* ptr = hidden_ptr.Get();
-    Ref(&ptr);
-
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-
-    ptr = nullptr;
-  }
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(1U, info.leaks.size());
-  }
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(1U, info.leaks.size());
-  }
-
-  hidden_ptr.Free();
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-}
-
-TEST_F(MemunreachableTest, log) {
-  HiddenPointer hidden_ptr;
-
-  ASSERT_TRUE(LogUnreachableMemory(true, 100));
-
-  hidden_ptr.Free();
-
-  {
-    UnreachableMemoryInfo info;
-
-    ASSERT_TRUE(GetUnreachableMemory(info));
-    ASSERT_EQ(0U, info.leaks.size());
-  }
-}
-
-TEST_F(MemunreachableTest, notdumpable) {
-  if (getuid() == 0) {
-    // TODO(ccross): make this a skipped test when gtest supports them
-    printf("[ SKIP     ] Not testable when running as root\n");
-    return;
-  }
-
-  ASSERT_EQ(0, prctl(PR_SET_DUMPABLE, 0));
-
-  HiddenPointer hidden_ptr;
-
-  EXPECT_FALSE(LogUnreachableMemory(true, 100));
-
-  ASSERT_EQ(0, prctl(PR_SET_DUMPABLE, 1));
-}
-
-TEST_F(MemunreachableTest, leak_lots) {
-  std::vector<HiddenPointer> hidden_ptrs;
-  hidden_ptrs.resize(1024);
-
-  ASSERT_TRUE(LogUnreachableMemory(true, 100));
-}
-
-}  // namespace android
diff --git a/libmemunreachable/tests/ThreadCapture_test.cpp b/libmemunreachable/tests/ThreadCapture_test.cpp
deleted file mode 100644
index 933d65a..0000000
--- a/libmemunreachable/tests/ThreadCapture_test.cpp
+++ /dev/null
@@ -1,351 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "ThreadCapture.h"
-
-#include <fcntl.h>
-#include <pthread.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-
-#include <algorithm>
-#include <functional>
-#include <memory>
-#include <thread>
-
-#include <gtest/gtest.h>
-
-#include "Allocator.h"
-#include "ScopedDisableMalloc.h"
-#include "ScopedPipe.h"
-
-#include <android-base/threads.h>
-
-using namespace std::chrono_literals;
-
-namespace android {
-
-class ThreadListTest : public ::testing::TestWithParam<int> {
- public:
-  ThreadListTest() : stop_(false) {}
-
-  ~ThreadListTest() {
-    // pthread_join may return before the entry in /proc/pid/task/ is gone,
-    // loop until ListThreads only finds the main thread so the next test
-    // doesn't fail.
-    WaitForThreads();
-  }
-
-  virtual void TearDown() { ASSERT_TRUE(heap.empty()); }
-
- protected:
-  template <class Function>
-  void StartThreads(unsigned int threads, Function&& func) {
-    threads_.reserve(threads);
-    tids_.reserve(threads);
-    for (unsigned int i = 0; i < threads; i++) {
-      threads_.emplace_back([&, threads, this]() {
-        {
-          std::lock_guard<std::mutex> lk(m_);
-          tids_.push_back(gettid());
-          if (tids_.size() == threads) {
-            cv_start_.notify_one();
-          }
-        }
-
-        func();
-
-        {
-          std::unique_lock<std::mutex> lk(m_);
-          cv_stop_.wait(lk, [&] { return stop_; });
-        }
-      });
-    }
-
-    {
-      std::unique_lock<std::mutex> lk(m_);
-      cv_start_.wait(lk, [&] { return tids_.size() == threads; });
-    }
-  }
-
-  void StopThreads() {
-    {
-      std::lock_guard<std::mutex> lk(m_);
-      stop_ = true;
-    }
-    cv_stop_.notify_all();
-
-    for (auto i = threads_.begin(); i != threads_.end(); i++) {
-      i->join();
-    }
-    threads_.clear();
-    tids_.clear();
-  }
-
-  std::vector<pid_t>& tids() { return tids_; }
-
-  Heap heap;
-
- private:
-  void WaitForThreads() {
-    auto tids = TidList{heap};
-    ThreadCapture thread_capture{getpid(), heap};
-
-    for (unsigned int i = 0; i < 100; i++) {
-      EXPECT_TRUE(thread_capture.ListThreads(tids));
-      if (tids.size() == 1) {
-        break;
-      }
-      std::this_thread::sleep_for(10ms);
-    }
-    EXPECT_EQ(1U, tids.size());
-  }
-
-  std::mutex m_;
-  std::condition_variable cv_start_;
-  std::condition_variable cv_stop_;
-  bool stop_;
-  std::vector<pid_t> tids_;
-
-  std::vector<std::thread> threads_;
-};
-
-TEST_F(ThreadListTest, list_one) {
-  ScopedDisableMallocTimeout disable_malloc;
-
-  ThreadCapture thread_capture(getpid(), heap);
-
-  auto expected_tids = allocator::vector<pid_t>(1, getpid(), heap);
-  auto list_tids = allocator::vector<pid_t>(heap);
-
-  ASSERT_TRUE(thread_capture.ListThreads(list_tids));
-
-  ASSERT_EQ(expected_tids, list_tids);
-
-  if (!HasFailure()) {
-    ASSERT_FALSE(disable_malloc.timed_out());
-  }
-}
-
-TEST_P(ThreadListTest, list_some) {
-  const unsigned int threads = GetParam() - 1;
-
-  StartThreads(threads, []() {});
-  std::vector<pid_t> expected_tids = tids();
-  expected_tids.push_back(getpid());
-
-  auto list_tids = allocator::vector<pid_t>(heap);
-
-  {
-    ScopedDisableMallocTimeout disable_malloc;
-
-    ThreadCapture thread_capture(getpid(), heap);
-
-    ASSERT_TRUE(thread_capture.ListThreads(list_tids));
-
-    if (!HasFailure()) {
-      ASSERT_FALSE(disable_malloc.timed_out());
-    }
-  }
-
-  StopThreads();
-
-  std::sort(list_tids.begin(), list_tids.end());
-  std::sort(expected_tids.begin(), expected_tids.end());
-
-  ASSERT_EQ(expected_tids.size(), list_tids.size());
-  EXPECT_TRUE(std::equal(expected_tids.begin(), expected_tids.end(), list_tids.begin()));
-}
-
-INSTANTIATE_TEST_CASE_P(ThreadListTest, ThreadListTest, ::testing::Values(1, 2, 10, 1024));
-
-class ThreadCaptureTest : public ThreadListTest {
- public:
-  ThreadCaptureTest() {}
-  ~ThreadCaptureTest() {}
-  void Fork(std::function<void()>&& child_init, std::function<void()>&& child_cleanup,
-            std::function<void(pid_t)>&& parent) {
-    ScopedPipe start_pipe;
-    ScopedPipe stop_pipe;
-
-    int pid = fork();
-
-    if (pid == 0) {
-      // child
-      child_init();
-      EXPECT_EQ(1, TEMP_FAILURE_RETRY(write(start_pipe.Sender(), "+", 1))) << strerror(errno);
-      char buf;
-      EXPECT_EQ(1, TEMP_FAILURE_RETRY(read(stop_pipe.Receiver(), &buf, 1))) << strerror(errno);
-      child_cleanup();
-      _exit(0);
-    } else {
-      // parent
-      ASSERT_GT(pid, 0);
-      char buf;
-      ASSERT_EQ(1, TEMP_FAILURE_RETRY(read(start_pipe.Receiver(), &buf, 1))) << strerror(errno);
-
-      parent(pid);
-
-      ASSERT_EQ(1, TEMP_FAILURE_RETRY(write(stop_pipe.Sender(), "+", 1))) << strerror(errno);
-      siginfo_t info{};
-      ASSERT_EQ(0, TEMP_FAILURE_RETRY(waitid(P_PID, pid, &info, WEXITED))) << strerror(errno);
-    }
-  }
-};
-
-TEST_P(ThreadCaptureTest, capture_some) {
-  const unsigned int threads = GetParam();
-
-  Fork(
-      [&]() {
-        // child init
-        StartThreads(threads - 1, []() {});
-      },
-      [&]() {
-        // child cleanup
-        StopThreads();
-      },
-      [&](pid_t child) {
-        // parent
-        ASSERT_GT(child, 0);
-
-        {
-          ScopedDisableMallocTimeout disable_malloc;
-
-          ThreadCapture thread_capture(child, heap);
-          auto list_tids = allocator::vector<pid_t>(heap);
-
-          ASSERT_TRUE(thread_capture.ListThreads(list_tids));
-          ASSERT_EQ(threads, list_tids.size());
-
-          ASSERT_TRUE(thread_capture.CaptureThreads());
-
-          auto thread_info = allocator::vector<ThreadInfo>(heap);
-          ASSERT_TRUE(thread_capture.CapturedThreadInfo(thread_info));
-          ASSERT_EQ(threads, thread_info.size());
-          ASSERT_TRUE(thread_capture.ReleaseThreads());
-
-          if (!HasFailure()) {
-            ASSERT_FALSE(disable_malloc.timed_out());
-          }
-        }
-      });
-}
-
-INSTANTIATE_TEST_CASE_P(ThreadCaptureTest, ThreadCaptureTest, ::testing::Values(1, 2, 10, 1024));
-
-TEST_F(ThreadCaptureTest, capture_kill) {
-  int ret = fork();
-
-  if (ret == 0) {
-    // child
-    sleep(10);
-  } else {
-    // parent
-    ASSERT_GT(ret, 0);
-
-    {
-      ScopedDisableMallocTimeout disable_malloc;
-
-      ThreadCapture thread_capture(ret, heap);
-      thread_capture.InjectTestFunc([&](pid_t tid) {
-        tgkill(ret, tid, SIGKILL);
-        usleep(10000);
-      });
-      auto list_tids = allocator::vector<pid_t>(heap);
-
-      ASSERT_TRUE(thread_capture.ListThreads(list_tids));
-      ASSERT_EQ(1U, list_tids.size());
-
-      ASSERT_FALSE(thread_capture.CaptureThreads());
-
-      if (!HasFailure()) {
-        ASSERT_FALSE(disable_malloc.timed_out());
-      }
-    }
-  }
-}
-
-TEST_F(ThreadCaptureTest, capture_signal) {
-  const int sig = SIGUSR1;
-
-  ScopedPipe pipe;
-
-  // For signal handler
-  static ScopedPipe* g_pipe;
-
-  Fork(
-      [&]() {
-        // child init
-        pipe.CloseReceiver();
-
-        g_pipe = &pipe;
-
-        struct sigaction act {};
-        act.sa_handler = [](int) {
-          char buf = '+';
-          write(g_pipe->Sender(), &buf, 1);
-          g_pipe->CloseSender();
-        };
-        sigaction(sig, &act, NULL);
-        sigset_t set;
-        sigemptyset(&set);
-        sigaddset(&set, sig);
-        pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-      },
-      [&]() {
-        // child cleanup
-        g_pipe = nullptr;
-        pipe.Close();
-      },
-      [&](pid_t child) {
-        // parent
-        ASSERT_GT(child, 0);
-        pipe.CloseSender();
-
-        {
-          ScopedDisableMallocTimeout disable_malloc;
-
-          ThreadCapture thread_capture(child, heap);
-          thread_capture.InjectTestFunc([&](pid_t tid) {
-            tgkill(child, tid, sig);
-            usleep(10000);
-          });
-          auto list_tids = allocator::vector<pid_t>(heap);
-
-          ASSERT_TRUE(thread_capture.ListThreads(list_tids));
-          ASSERT_EQ(1U, list_tids.size());
-
-          ASSERT_TRUE(thread_capture.CaptureThreads());
-
-          auto thread_info = allocator::vector<ThreadInfo>(heap);
-          ASSERT_TRUE(thread_capture.CapturedThreadInfo(thread_info));
-          ASSERT_EQ(1U, thread_info.size());
-          ASSERT_TRUE(thread_capture.ReleaseThreads());
-
-          usleep(100000);
-          char buf;
-          ASSERT_EQ(1, TEMP_FAILURE_RETRY(read(pipe.Receiver(), &buf, 1)));
-          ASSERT_EQ(buf, '+');
-
-          if (!HasFailure()) {
-            ASSERT_FALSE(disable_malloc.timed_out());
-          }
-        }
-      });
-}
-
-}  // namespace android
diff --git a/libmetricslogger/Android.bp b/libmetricslogger/Android.bp
deleted file mode 100644
index 7d7554b..0000000
--- a/libmetricslogger/Android.bp
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2017 The Android Open Source Project
-
-metricslogger_lib_src_files = [
-    "metrics_logger.cpp",
-]
-
-cc_defaults {
-    name: "metricslogger_defaults",
-
-    host_supported: true,
-
-    export_include_dirs: ["include"],
-    local_include_dirs: ["include"],
-    shared_libs: [
-        "libbase",
-        "liblog",
-        "libstatssocket",
-    ],
-    whole_static_libs: ["libgtest_prod"],
-
-    cflags: [
-        "-Wall",
-        "-Wextra",
-        "-Werror",
-    ],
-}
-
-// metricslogger shared library
-// -----------------------------------------------------------------------------
-cc_library {
-    name: "libmetricslogger",
-    srcs: metricslogger_lib_src_files,
-    defaults: ["metricslogger_defaults"],
-    export_shared_lib_headers: ["libstatssocket"],
-}
-
-// metricslogger shared library, debug
-// -----------------------------------------------------------------------------
-cc_library_shared {
-    name: "libmetricslogger_debug",
-    srcs: metricslogger_lib_src_files,
-    defaults: ["metricslogger_defaults"],
-
-    target: {
-        host: {
-            cflags: ["-UNDEBUG"],
-        },
-    },
-}
-
-// Native tests
-// -----------------------------------------------------------------------------
-cc_test {
-    name: "metricslogger_tests",
-    isolated: true,
-    defaults: ["metricslogger_defaults"],
-    shared_libs: [
-        "libbase",
-        "libmetricslogger_debug",
-    ],
-    srcs: [
-        "metrics_logger_test.cpp",
-    ],
-}
diff --git a/libmetricslogger/OWNERS b/libmetricslogger/OWNERS
deleted file mode 100644
index 6a6fba2..0000000
--- a/libmetricslogger/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-cwren@google.com
-jhawkins@google.com
diff --git a/libmetricslogger/include/metricslogger/metrics_logger.h b/libmetricslogger/include/metricslogger/metrics_logger.h
deleted file mode 100644
index 71c04a6..0000000
--- a/libmetricslogger/include/metricslogger/metrics_logger.h
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <log/log_event_list.h>
-#include <stats_event_list.h>
-#include <cstdint>
-#include <string>
-
-namespace android {
-namespace metricslogger {
-
-// Logs a Tron histogram metric named |event| containing |data| to the Tron log
-// buffer.
-void LogHistogram(const std::string& event, int32_t data);
-
-// Logs a Tron counter metric named |name| containing |val| count to the Tron
-// log buffer.
-void LogCounter(const std::string& name, int32_t val);
-
-// Logs a Tron multi_action with category|category| containing the string
-// |value| in the field |field|.
-void LogMultiAction(int32_t category, int32_t field, const std::string& value);
-
-// Logs a Tron complex event.
-//
-// A complex event can include data in a structure not suppored by the other
-// log event types above.
-//
-// Note that instances of this class are single use. You must call Record()
-// to write the event to the event log.
-class ComplexEventLogger {
-  private:
-    android_log_event_list logger;
-    stats_event_list stats_logger;
-
-  public:
-    // Create a complex event with category|category|.
-    explicit ComplexEventLogger(int category);
-    // Set the package name that this event originates from.
-    void SetPackageName(const std::string& package_name);
-    // Add tagged data to the event, with the given tag and integer value.
-    void AddTaggedData(int tag, int32_t value);
-    // Add tagged data to the event, with the given tag and string value.
-    void AddTaggedData(int tag, const std::string& value);
-    // Add tagged data to the event, with the given tag and integer value.
-    void AddTaggedData(int tag, int64_t value);
-    // Add tagged data to the event, with the given tag and float value.
-    void AddTaggedData(int tag, float value);
-    // Record this event. This method can only be used once per instance
-    // of ComplexEventLogger. Do not made any subsequent calls to AddTaggedData
-    // after recording an event.
-    void Record();
-};
-
-// TODO: replace these with the metric_logger.proto definitions
-enum {
-    LOGBUILDER_CATEGORY = 757,
-    LOGBUILDER_TYPE = 758,
-    LOGBUILDER_NAME = 799,
-    LOGBUILDER_BUCKET = 801,
-    LOGBUILDER_VALUE = 802,
-    LOGBUILDER_COUNTER = 803,
-    LOGBUILDER_HISTOGRAM = 804,
-    LOGBUILDER_PACKAGENAME = 806,
-
-    ACTION_BOOT = 1098,
-    FIELD_PLATFORM_REASON = 1099,
-
-    FIELD_DURATION_MILLIS = 1304,
-
-    FIELD_END_BATTERY_PERCENT = 1308,
-
-    ACTION_HIDDEN_API_ACCESSED = 1391,
-    FIELD_HIDDEN_API_ACCESS_METHOD = 1392,
-    FIELD_HIDDEN_API_ACCESS_DENIED = 1393,
-    FIELD_HIDDEN_API_SIGNATURE = 1394,
-
-    ACTION_USB_CONNECTOR_CONNECTED = 1422,
-    ACTION_USB_CONNECTOR_DISCONNECTED = 1423,
-    ACTION_USB_AUDIO_CONNECTED = 1424,
-    FIELD_USB_AUDIO_VIDPID = 1425,
-    ACTION_USB_AUDIO_DISCONNECTED = 1426,
-    ACTION_HARDWARE_FAILED = 1427,
-    FIELD_HARDWARE_TYPE = 1428,
-    FIELD_HARDWARE_FAILURE_CODE = 1429,
-    ACTION_PHYSICAL_DROP = 1430,
-    FIELD_CONFIDENCE_PERCENT = 1431,
-    FIELD_ACCEL_MILLI_G = 1432,
-    ACTION_BATTERY_HEALTH = 1433,
-    FIELD_BATTERY_HEALTH_SNAPSHOT_TYPE = 1434,
-    FIELD_BATTERY_TEMPERATURE_DECI_C = 1435,
-    FIELD_BATTERY_VOLTAGE_UV = 1436,
-    FIELD_BATTERY_OPEN_CIRCUIT_VOLTAGE_UV = 1437,
-    ACTION_BATTERY_CHARGE_CYCLES = 1438,
-    FIELD_BATTERY_CHARGE_CYCLES = 1439,
-
-    ACTION_SLOW_IO = 1442,
-    FIELD_IO_OPERATION_TYPE = 1443,
-    FIELD_IO_OPERATION_COUNT = 1444,
-    ACTION_SPEAKER_IMPEDANCE = 1445,
-    FIELD_SPEAKER_IMPEDANCE_MILLIOHMS = 1446,
-    FIELD_SPEAKER_LOCATION = 1447,
-    FIELD_BATTERY_RESISTANCE_UOHMS = 1448,
-    FIELD_BATTERY_CURRENT_UA = 1449,
-    FIELD_HARDWARE_LOCATION = 1450,
-    ACTION_BATTERY_CAUSED_SHUTDOWN = 1451,
-};
-
-enum {
-    TYPE_ACTION = 4,
-};
-
-enum {
-    ACCESS_METHOD_NONE = 0,
-    ACCESS_METHOD_REFLECTION = 1,
-    ACCESS_METHOD_JNI = 2,
-    ACCESS_METHOD_LINKING = 3,
-};
-
-enum HardwareType {
-    HARDWARE_UNKNOWN = 0,
-    HARDWARE_MICROPHONE = 1,
-    HARDWARE_CODEC = 2,
-    HARDWARE_SPEAKER = 3,
-    HARDWARE_FINGERPRINT = 4,
-};
-
-enum HardwareFailureCode {
-    HARDWARE_FAILURE_UNKNOWN = 0,
-    HARDWARE_FAILURE_COMPLETE = 1,
-    HARDWARE_FAILURE_SPEAKER_HIGH_Z = 2,
-    HARDWARE_FAILURE_SPEAKER_SHORT = 3,
-    HARDWARE_FAILURE_FINGERPRINT_SENSOR_BROKEN = 4,
-    HARDWARE_FAILURE_FINGERPRINT_TOO_MANY_DEAD_PIXELS = 5,
-};
-
-enum IoOperation {
-    IOOP_UNKNOWN = 0,
-    IOOP_READ = 1,
-    IOOP_WRITE = 2,
-    IOOP_UNMAP = 3,
-    IOOP_SYNC = 4,
-};
-
-}  // namespace metricslogger
-}  // namespace android
diff --git a/libmetricslogger/metrics_logger.cpp b/libmetricslogger/metrics_logger.cpp
deleted file mode 100644
index 2a1b137..0000000
--- a/libmetricslogger/metrics_logger.cpp
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "metricslogger/metrics_logger.h"
-
-#include <cstdlib>
-
-#include <android-base/chrono_utils.h>
-#include <log/event_tag_map.h>
-
-using namespace android;
-
-namespace {
-
-const static int kStatsEventTag = 1937006964;
-const static int kKeyValuePairAtomId = 83;
-#ifdef __ANDROID__
-EventTagMap* kEventTagMap = android_openEventTagMap(nullptr);
-const int kSysuiMultiActionTag = android_lookupEventTagNum(
-    kEventTagMap, "sysui_multi_action", "(content|4)", ANDROID_LOG_UNKNOWN);
-#else
-// android_openEventTagMap does not work on host builds.
-const int kSysuiMultiActionTag = 0;
-#endif
-
-int64_t getElapsedTimeNanoSinceBoot() {
-    return std::chrono::duration_cast<std::chrono::nanoseconds>(
-                   android::base::boot_clock::now().time_since_epoch())
-            .count();
-}
-
-}  // namespace
-
-namespace android {
-namespace metricslogger {
-
-// Mirror com.android.internal.logging.MetricsLogger#histogram().
-void LogHistogram(const std::string& event, int32_t data) {
-    android_log_event_list log(kSysuiMultiActionTag);
-    log << LOGBUILDER_CATEGORY << LOGBUILDER_HISTOGRAM << LOGBUILDER_NAME << event
-        << LOGBUILDER_BUCKET << data << LOGBUILDER_VALUE << 1 << LOG_ID_EVENTS;
-
-    stats_event_list stats_log(kStatsEventTag);
-    stats_log << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
-              << LOGBUILDER_HISTOGRAM << LOGBUILDER_NAME << event << LOGBUILDER_BUCKET << data
-              << LOGBUILDER_VALUE << 1;
-    stats_log.write(LOG_ID_STATS);
-}
-
-// Mirror com.android.internal.logging.MetricsLogger#count().
-void LogCounter(const std::string& name, int32_t val) {
-    android_log_event_list log(kSysuiMultiActionTag);
-    log << LOGBUILDER_CATEGORY << LOGBUILDER_COUNTER << LOGBUILDER_NAME << name << LOGBUILDER_VALUE
-        << val << LOG_ID_EVENTS;
-
-    stats_event_list stats_log(kStatsEventTag);
-    stats_log << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
-              << LOGBUILDER_COUNTER << LOGBUILDER_NAME << name << LOGBUILDER_VALUE << val;
-    stats_log.write(LOG_ID_STATS);
-}
-
-// Mirror com.android.internal.logging.MetricsLogger#action().
-void LogMultiAction(int32_t category, int32_t field, const std::string& value) {
-    android_log_event_list log(kSysuiMultiActionTag);
-    log << LOGBUILDER_CATEGORY << category << LOGBUILDER_TYPE << TYPE_ACTION
-        << field << value << LOG_ID_EVENTS;
-
-    stats_event_list stats_log(kStatsEventTag);
-    stats_log << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
-              << category << LOGBUILDER_TYPE << TYPE_ACTION << field << value;
-    stats_log.write(LOG_ID_STATS);
-}
-
-ComplexEventLogger::ComplexEventLogger(int category)
-    : logger(kSysuiMultiActionTag), stats_logger(kStatsEventTag) {
-    logger << LOGBUILDER_CATEGORY << category;
-    stats_logger << getElapsedTimeNanoSinceBoot() << kKeyValuePairAtomId << LOGBUILDER_CATEGORY
-                 << category;
-}
-
-void ComplexEventLogger::SetPackageName(const std::string& package_name) {
-    logger << LOGBUILDER_PACKAGENAME << package_name;
-    stats_logger << LOGBUILDER_PACKAGENAME << package_name;
-}
-
-void ComplexEventLogger::AddTaggedData(int tag, int32_t value) {
-    logger << tag << value;
-    stats_logger << tag << value;
-}
-
-void ComplexEventLogger::AddTaggedData(int tag, const std::string& value) {
-    logger << tag << value;
-    stats_logger << tag << value;
-}
-
-void ComplexEventLogger::AddTaggedData(int tag, int64_t value) {
-    logger << tag << value;
-    stats_logger << tag << value;
-}
-
-void ComplexEventLogger::AddTaggedData(int tag, float value) {
-    logger << tag << value;
-    stats_logger << tag << value;
-}
-
-void ComplexEventLogger::Record() {
-    logger << LOG_ID_EVENTS;
-    stats_logger.write(LOG_ID_STATS);
-}
-
-}  // namespace metricslogger
-}  // namespace android
diff --git a/libmetricslogger/metrics_logger_test.cpp b/libmetricslogger/metrics_logger_test.cpp
deleted file mode 100644
index 440645c..0000000
--- a/libmetricslogger/metrics_logger_test.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "metricslogger/metrics_logger.h"
-
-#include <gtest/gtest.h>
-
-TEST(MetricsLoggerTest, AddSingleBootEvent) {
-    android::metricslogger::LogHistogram("test_event", 42);
-    // TODO(jhawkins): Verify the EventLog is updated.
-}
-
-TEST(MetricsLoggerTest, AddCounterVal) {
-    android::metricslogger::LogCounter("test_count", 10);
-}
diff --git a/libmodprobe/Android.bp b/libmodprobe/Android.bp
new file mode 100644
index 0000000..78da46c
--- /dev/null
+++ b/libmodprobe/Android.bp
@@ -0,0 +1,31 @@
+cc_library_static {
+    name: "libmodprobe",
+    cflags: [
+        "-Werror",
+    ],
+    vendor_available: true,
+    recovery_available: true,
+    srcs: [
+        "libmodprobe.cpp",
+        "libmodprobe_ext.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+    ],
+    export_include_dirs: ["include/"],
+}
+
+cc_test {
+    name: "libmodprobe_tests",
+    cflags: ["-Werror"],
+    shared_libs: [
+        "libbase",
+    ],
+    local_include_dirs: ["include/"],
+    srcs: [
+        "libmodprobe_test.cpp",
+        "libmodprobe.cpp",
+        "libmodprobe_ext_test.cpp",
+    ],
+    test_suites: ["device-tests"],
+}
diff --git a/libmodprobe/OWNERS b/libmodprobe/OWNERS
new file mode 100644
index 0000000..4b770b1
--- /dev/null
+++ b/libmodprobe/OWNERS
@@ -0,0 +1,2 @@
+tomcherry@google.com
+smuckle@google.com
diff --git a/libmodprobe/include/modprobe/modprobe.h b/libmodprobe/include/modprobe/modprobe.h
new file mode 100644
index 0000000..4806b08
--- /dev/null
+++ b/libmodprobe/include/modprobe/modprobe.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <set>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+class Modprobe {
+  public:
+    Modprobe(const std::vector<std::string>&, const std::string load_file = "modules.load");
+
+    bool LoadListedModules(bool strict = true);
+    bool LoadWithAliases(const std::string& module_name, bool strict,
+                         const std::string& parameters = "");
+    bool Remove(const std::string& module_name);
+    std::vector<std::string> ListModules(const std::string& pattern);
+    bool GetAllDependencies(const std::string& module, std::vector<std::string>* pre_dependencies,
+                            std::vector<std::string>* dependencies,
+                            std::vector<std::string>* post_dependencies);
+    void ResetModuleCount() { module_count_ = 0; }
+    int GetModuleCount() { return module_count_; }
+    void EnableBlocklist(bool enable);
+    void EnableVerbose(bool enable);
+
+  private:
+    std::string MakeCanonical(const std::string& module_path);
+    bool InsmodWithDeps(const std::string& module_name, const std::string& parameters);
+    bool Insmod(const std::string& path_name, const std::string& parameters);
+    bool Rmmod(const std::string& module_name);
+    std::vector<std::string> GetDependencies(const std::string& module);
+    bool ModuleExists(const std::string& module_name);
+    void AddOption(const std::string& module_name, const std::string& option_name,
+                   const std::string& value);
+    std::string GetKernelCmdline();
+
+    bool ParseDepCallback(const std::string& base_path, const std::vector<std::string>& args);
+    bool ParseAliasCallback(const std::vector<std::string>& args);
+    bool ParseSoftdepCallback(const std::vector<std::string>& args);
+    bool ParseLoadCallback(const std::vector<std::string>& args);
+    bool ParseOptionsCallback(const std::vector<std::string>& args);
+    bool ParseBlocklistCallback(const std::vector<std::string>& args);
+    void ParseKernelCmdlineOptions();
+    void ParseCfg(const std::string& cfg, std::function<bool(const std::vector<std::string>&)> f);
+
+    std::vector<std::pair<std::string, std::string>> module_aliases_;
+    std::unordered_map<std::string, std::vector<std::string>> module_deps_;
+    std::vector<std::pair<std::string, std::string>> module_pre_softdep_;
+    std::vector<std::pair<std::string, std::string>> module_post_softdep_;
+    std::vector<std::string> module_load_;
+    std::unordered_map<std::string, std::string> module_options_;
+    std::set<std::string> module_blocklist_;
+    std::unordered_set<std::string> module_loaded_;
+    int module_count_ = 0;
+    bool blocklist_enabled = false;
+};
diff --git a/libmodprobe/libmodprobe.cpp b/libmodprobe/libmodprobe.cpp
new file mode 100644
index 0000000..5a6ae8b
--- /dev/null
+++ b/libmodprobe/libmodprobe.cpp
@@ -0,0 +1,508 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <modprobe/modprobe.h>
+
+#include <fnmatch.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+
+#include <algorithm>
+#include <set>
+#include <string>
+#include <vector>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+
+std::string Modprobe::MakeCanonical(const std::string& module_path) {
+    auto start = module_path.find_last_of('/');
+    if (start == std::string::npos) {
+        start = 0;
+    } else {
+        start += 1;
+    }
+    auto end = module_path.size();
+    if (android::base::EndsWith(module_path, ".ko")) {
+        end -= 3;
+    }
+    if ((end - start) <= 1) {
+        LOG(ERROR) << "malformed module name: " << module_path;
+        return "";
+    }
+    std::string module_name = module_path.substr(start, end - start);
+    // module names can have '-', but their file names will have '_'
+    std::replace(module_name.begin(), module_name.end(), '-', '_');
+    return module_name;
+}
+
+bool Modprobe::ParseDepCallback(const std::string& base_path,
+                                const std::vector<std::string>& args) {
+    std::vector<std::string> deps;
+    std::string prefix = "";
+
+    // Set first item as our modules path
+    std::string::size_type pos = args[0].find(':');
+    if (args[0][0] != '/') {
+        prefix = base_path + "/";
+    }
+    if (pos != std::string::npos) {
+        deps.emplace_back(prefix + args[0].substr(0, pos));
+    } else {
+        LOG(ERROR) << "dependency lines must start with name followed by ':'";
+    }
+
+    // Remaining items are dependencies of our module
+    for (auto arg = args.begin() + 1; arg != args.end(); ++arg) {
+        if ((*arg)[0] != '/') {
+            prefix = base_path + "/";
+        } else {
+            prefix = "";
+        }
+        deps.push_back(prefix + *arg);
+    }
+
+    std::string canonical_name = MakeCanonical(args[0].substr(0, pos));
+    if (canonical_name.empty()) {
+        return false;
+    }
+    this->module_deps_[canonical_name] = deps;
+
+    return true;
+}
+
+bool Modprobe::ParseAliasCallback(const std::vector<std::string>& args) {
+    auto it = args.begin();
+    const std::string& type = *it++;
+
+    if (type != "alias") {
+        LOG(ERROR) << "non-alias line encountered in modules.alias, found " << type;
+        return false;
+    }
+
+    if (args.size() != 3) {
+        LOG(ERROR) << "alias lines in modules.alias must have 3 entries, not " << args.size();
+        return false;
+    }
+
+    const std::string& alias = *it++;
+    const std::string& module_name = *it++;
+    this->module_aliases_.emplace_back(alias, module_name);
+
+    return true;
+}
+
+bool Modprobe::ParseSoftdepCallback(const std::vector<std::string>& args) {
+    auto it = args.begin();
+    const std::string& type = *it++;
+    std::string state = "";
+
+    if (type != "softdep") {
+        LOG(ERROR) << "non-softdep line encountered in modules.softdep, found " << type;
+        return false;
+    }
+
+    if (args.size() < 4) {
+        LOG(ERROR) << "softdep lines in modules.softdep must have at least 4 entries";
+        return false;
+    }
+
+    const std::string& module = *it++;
+    while (it != args.end()) {
+        const std::string& token = *it++;
+        if (token == "pre:" || token == "post:") {
+            state = token;
+            continue;
+        }
+        if (state == "") {
+            LOG(ERROR) << "malformed modules.softdep at token " << token;
+            return false;
+        }
+        if (state == "pre:") {
+            this->module_pre_softdep_.emplace_back(module, token);
+        } else {
+            this->module_post_softdep_.emplace_back(module, token);
+        }
+    }
+
+    return true;
+}
+
+bool Modprobe::ParseLoadCallback(const std::vector<std::string>& args) {
+    auto it = args.begin();
+    const std::string& module = *it++;
+
+    const std::string& canonical_name = MakeCanonical(module);
+    if (canonical_name.empty()) {
+        return false;
+    }
+    this->module_load_.emplace_back(canonical_name);
+
+    return true;
+}
+
+bool Modprobe::ParseOptionsCallback(const std::vector<std::string>& args) {
+    auto it = args.begin();
+    const std::string& type = *it++;
+
+    if (type != "options") {
+        LOG(ERROR) << "non-options line encountered in modules.options";
+        return false;
+    }
+
+    if (args.size() < 2) {
+        LOG(ERROR) << "lines in modules.options must have at least 2 entries, not " << args.size();
+        return false;
+    }
+
+    const std::string& module = *it++;
+    std::string options = "";
+
+    const std::string& canonical_name = MakeCanonical(module);
+    if (canonical_name.empty()) {
+        return false;
+    }
+
+    while (it != args.end()) {
+        options += *it++;
+        if (it != args.end()) {
+            options += " ";
+        }
+    }
+
+    auto [unused, inserted] = this->module_options_.emplace(canonical_name, options);
+    if (!inserted) {
+        LOG(ERROR) << "multiple options lines present for module " << module;
+        return false;
+    }
+    return true;
+}
+
+bool Modprobe::ParseBlocklistCallback(const std::vector<std::string>& args) {
+    auto it = args.begin();
+    const std::string& type = *it++;
+
+    if (type != "blocklist") {
+        LOG(ERROR) << "non-blocklist line encountered in modules.blocklist";
+        return false;
+    }
+
+    if (args.size() != 2) {
+        LOG(ERROR) << "lines in modules.blocklist must have exactly 2 entries, not " << args.size();
+        return false;
+    }
+
+    const std::string& module = *it++;
+
+    const std::string& canonical_name = MakeCanonical(module);
+    if (canonical_name.empty()) {
+        return false;
+    }
+    this->module_blocklist_.emplace(canonical_name);
+
+    return true;
+}
+
+void Modprobe::ParseCfg(const std::string& cfg,
+                        std::function<bool(const std::vector<std::string>&)> f) {
+    std::string cfg_contents;
+    if (!android::base::ReadFileToString(cfg, &cfg_contents, false)) {
+        return;
+    }
+
+    std::vector<std::string> lines = android::base::Split(cfg_contents, "\n");
+    for (const std::string line : lines) {
+        if (line.empty() || line[0] == '#') {
+            continue;
+        }
+        const std::vector<std::string> args = android::base::Split(line, " ");
+        if (args.empty()) continue;
+        f(args);
+    }
+    return;
+}
+
+void Modprobe::AddOption(const std::string& module_name, const std::string& option_name,
+                         const std::string& value) {
+    auto canonical_name = MakeCanonical(module_name);
+    auto options_iter = module_options_.find(canonical_name);
+    auto option_str = option_name + "=" + value;
+    if (options_iter != module_options_.end()) {
+        options_iter->second = options_iter->second + " " + option_str;
+    } else {
+        module_options_.emplace(canonical_name, option_str);
+    }
+}
+
+void Modprobe::ParseKernelCmdlineOptions(void) {
+    std::string cmdline = GetKernelCmdline();
+    std::string module_name = "";
+    std::string option_name = "";
+    std::string value = "";
+    bool in_module = true;
+    bool in_option = false;
+    bool in_value = false;
+    bool in_quotes = false;
+    int start = 0;
+
+    for (int i = 0; i < cmdline.size(); i++) {
+        if (cmdline[i] == '"') {
+            in_quotes = !in_quotes;
+        }
+
+        if (in_quotes) continue;
+
+        if (cmdline[i] == ' ') {
+            if (in_value) {
+                value = cmdline.substr(start, i - start);
+                if (!module_name.empty() && !option_name.empty()) {
+                    AddOption(module_name, option_name, value);
+                }
+            }
+            module_name = "";
+            option_name = "";
+            value = "";
+            in_value = false;
+            start = i + 1;
+            in_module = true;
+            continue;
+        }
+
+        if (cmdline[i] == '.') {
+            if (in_module) {
+                module_name = cmdline.substr(start, i - start);
+                start = i + 1;
+                in_module = false;
+            }
+            in_option = true;
+            continue;
+        }
+
+        if (cmdline[i] == '=') {
+            if (in_option) {
+                option_name = cmdline.substr(start, i - start);
+                start = i + 1;
+                in_option = false;
+            }
+            in_value = true;
+            continue;
+        }
+    }
+    if (in_value && !in_quotes) {
+        value = cmdline.substr(start, cmdline.size() - start);
+        if (!module_name.empty() && !option_name.empty()) {
+            AddOption(module_name, option_name, value);
+        }
+    }
+}
+
+Modprobe::Modprobe(const std::vector<std::string>& base_paths, const std::string load_file) {
+    using namespace std::placeholders;
+
+    for (const auto& base_path : base_paths) {
+        auto alias_callback = std::bind(&Modprobe::ParseAliasCallback, this, _1);
+        ParseCfg(base_path + "/modules.alias", alias_callback);
+
+        auto dep_callback = std::bind(&Modprobe::ParseDepCallback, this, base_path, _1);
+        ParseCfg(base_path + "/modules.dep", dep_callback);
+
+        auto softdep_callback = std::bind(&Modprobe::ParseSoftdepCallback, this, _1);
+        ParseCfg(base_path + "/modules.softdep", softdep_callback);
+
+        auto load_callback = std::bind(&Modprobe::ParseLoadCallback, this, _1);
+        ParseCfg(base_path + "/" + load_file, load_callback);
+
+        auto options_callback = std::bind(&Modprobe::ParseOptionsCallback, this, _1);
+        ParseCfg(base_path + "/modules.options", options_callback);
+
+        auto blocklist_callback = std::bind(&Modprobe::ParseBlocklistCallback, this, _1);
+        ParseCfg(base_path + "/modules.blocklist", blocklist_callback);
+    }
+
+    ParseKernelCmdlineOptions();
+    android::base::SetMinimumLogSeverity(android::base::INFO);
+}
+
+void Modprobe::EnableBlocklist(bool enable) {
+    blocklist_enabled = enable;
+}
+
+void Modprobe::EnableVerbose(bool enable) {
+    if (enable) {
+        android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    } else {
+        android::base::SetMinimumLogSeverity(android::base::INFO);
+    }
+}
+
+std::vector<std::string> Modprobe::GetDependencies(const std::string& module) {
+    auto it = module_deps_.find(module);
+    if (it == module_deps_.end()) {
+        return {};
+    }
+    return it->second;
+}
+
+bool Modprobe::InsmodWithDeps(const std::string& module_name, const std::string& parameters) {
+    if (module_name.empty()) {
+        LOG(ERROR) << "Need valid module name, given: " << module_name;
+        return false;
+    }
+
+    auto dependencies = GetDependencies(module_name);
+    if (dependencies.empty()) {
+        LOG(ERROR) << "Module " << module_name << " not in dependency file";
+        return false;
+    }
+
+    // load module dependencies in reverse order
+    for (auto dep = dependencies.rbegin(); dep != dependencies.rend() - 1; ++dep) {
+        LOG(VERBOSE) << "Loading hard dep for '" << module_name << "': " << *dep;
+        if (!LoadWithAliases(*dep, true)) {
+            return false;
+        }
+    }
+
+    // try to load soft pre-dependencies
+    for (const auto& [module, softdep] : module_pre_softdep_) {
+        if (module_name == module) {
+            LOG(VERBOSE) << "Loading soft pre-dep for '" << module << "': " << softdep;
+            LoadWithAliases(softdep, false);
+        }
+    }
+
+    // load target module itself with args
+    if (!Insmod(dependencies[0], parameters)) {
+        return false;
+    }
+
+    // try to load soft post-dependencies
+    for (const auto& [module, softdep] : module_post_softdep_) {
+        if (module_name == module) {
+            LOG(VERBOSE) << "Loading soft post-dep for '" << module << "': " << softdep;
+            LoadWithAliases(softdep, false);
+        }
+    }
+
+    return true;
+}
+
+bool Modprobe::LoadWithAliases(const std::string& module_name, bool strict,
+                               const std::string& parameters) {
+    auto canonical_name = MakeCanonical(module_name);
+    if (module_loaded_.count(canonical_name)) {
+        return true;
+    }
+
+    std::set<std::string> modules_to_load = {canonical_name};
+    bool module_loaded = false;
+
+    // use aliases to expand list of modules to load (multiple modules
+    // may alias themselves to the requested name)
+    for (const auto& [alias, aliased_module] : module_aliases_) {
+        if (fnmatch(alias.c_str(), module_name.c_str(), 0) != 0) continue;
+        LOG(VERBOSE) << "Found alias for '" << module_name << "': '" << aliased_module;
+        if (module_loaded_.count(MakeCanonical(aliased_module))) continue;
+        modules_to_load.emplace(aliased_module);
+    }
+
+    // attempt to load all modules aliased to this name
+    for (const auto& module : modules_to_load) {
+        if (!ModuleExists(module)) continue;
+        if (InsmodWithDeps(module, parameters)) module_loaded = true;
+    }
+
+    if (strict && !module_loaded) {
+        LOG(ERROR) << "LoadWithAliases was unable to load " << module_name;
+        return false;
+    }
+    return true;
+}
+
+bool Modprobe::LoadListedModules(bool strict) {
+    auto ret = true;
+    for (const auto& module : module_load_) {
+        if (!LoadWithAliases(module, true)) {
+            ret = false;
+            if (strict) break;
+        }
+    }
+    return ret;
+}
+
+bool Modprobe::Remove(const std::string& module_name) {
+    auto dependencies = GetDependencies(MakeCanonical(module_name));
+    if (dependencies.empty()) {
+        LOG(ERROR) << "Empty dependencies for module " << module_name;
+        return false;
+    }
+    if (!Rmmod(dependencies[0])) {
+        return false;
+    }
+    for (auto dep = dependencies.begin() + 1; dep != dependencies.end(); ++dep) {
+        Rmmod(*dep);
+    }
+    return true;
+}
+
+std::vector<std::string> Modprobe::ListModules(const std::string& pattern) {
+    std::vector<std::string> rv;
+    for (const auto& [module, deps] : module_deps_) {
+        // Attempt to match both the canonical module name and the module filename.
+        if (!fnmatch(pattern.c_str(), module.c_str(), 0)) {
+            rv.emplace_back(module);
+        } else if (!fnmatch(pattern.c_str(), basename(deps[0].c_str()), 0)) {
+            rv.emplace_back(deps[0]);
+        }
+    }
+    return rv;
+}
+
+bool Modprobe::GetAllDependencies(const std::string& module,
+                                  std::vector<std::string>* pre_dependencies,
+                                  std::vector<std::string>* dependencies,
+                                  std::vector<std::string>* post_dependencies) {
+    std::string canonical_name = MakeCanonical(module);
+    if (pre_dependencies) {
+        pre_dependencies->clear();
+        for (const auto& [it_module, it_softdep] : module_pre_softdep_) {
+            if (canonical_name == it_module) {
+                pre_dependencies->emplace_back(it_softdep);
+            }
+        }
+    }
+    if (dependencies) {
+        dependencies->clear();
+        auto hard_deps = GetDependencies(canonical_name);
+        if (hard_deps.empty()) {
+            return false;
+        }
+        for (auto dep = hard_deps.rbegin(); dep != hard_deps.rend(); dep++) {
+            dependencies->emplace_back(*dep);
+        }
+    }
+    if (post_dependencies) {
+        for (const auto& [it_module, it_softdep] : module_post_softdep_) {
+            if (canonical_name == it_module) {
+                post_dependencies->emplace_back(it_softdep);
+            }
+        }
+    }
+    return true;
+}
diff --git a/libmodprobe/libmodprobe_ext.cpp b/libmodprobe/libmodprobe_ext.cpp
new file mode 100644
index 0000000..84f7150
--- /dev/null
+++ b/libmodprobe/libmodprobe_ext.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/stat.h>
+#include <sys/syscall.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+#include <modprobe/modprobe.h>
+
+std::string Modprobe::GetKernelCmdline(void) {
+    std::string cmdline;
+    if (!android::base::ReadFileToString("/proc/cmdline", &cmdline)) {
+        return "";
+    }
+    return cmdline;
+}
+
+bool Modprobe::Insmod(const std::string& path_name, const std::string& parameters) {
+    android::base::unique_fd fd(
+            TEMP_FAILURE_RETRY(open(path_name.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC)));
+    if (fd == -1) {
+        LOG(ERROR) << "Could not open module '" << path_name << "'";
+        return false;
+    }
+
+    auto canonical_name = MakeCanonical(path_name);
+    std::string options = "";
+    auto options_iter = module_options_.find(canonical_name);
+    if (options_iter != module_options_.end()) {
+        options = options_iter->second;
+    }
+    if (!parameters.empty()) {
+        options = options + " " + parameters;
+    }
+
+    LOG(INFO) << "Loading module " << path_name << " with args \"" << options << "\"";
+    int ret = syscall(__NR_finit_module, fd.get(), options.c_str(), 0);
+    if (ret != 0) {
+        if (errno == EEXIST) {
+            // Module already loaded
+            module_loaded_.emplace(canonical_name);
+            return true;
+        }
+        LOG(ERROR) << "Failed to insmod '" << path_name << "' with args '" << options << "'";
+        return false;
+    }
+
+    LOG(INFO) << "Loaded kernel module " << path_name;
+    module_loaded_.emplace(canonical_name);
+    module_count_++;
+    return true;
+}
+
+bool Modprobe::Rmmod(const std::string& module_name) {
+    auto canonical_name = MakeCanonical(module_name);
+    int ret = syscall(__NR_delete_module, canonical_name.c_str(), O_NONBLOCK);
+    if (ret != 0) {
+        PLOG(ERROR) << "Failed to remove module '" << module_name << "'";
+        return false;
+    }
+    module_loaded_.erase(canonical_name);
+    return true;
+}
+
+bool Modprobe::ModuleExists(const std::string& module_name) {
+    struct stat fileStat;
+    if (blocklist_enabled && module_blocklist_.count(module_name)) {
+        LOG(INFO) << "module " << module_name << " is blocklisted";
+        return false;
+    }
+    auto deps = GetDependencies(module_name);
+    if (deps.empty()) {
+        // missing deps can happen in the case of an alias
+        return false;
+    }
+    if (stat(deps.front().c_str(), &fileStat)) {
+        LOG(INFO) << "module " << module_name << " does not exist";
+        return false;
+    }
+    if (!S_ISREG(fileStat.st_mode)) {
+        LOG(INFO) << "module " << module_name << " is not a regular file";
+        return false;
+    }
+    return true;
+}
diff --git a/libmodprobe/libmodprobe_ext_test.cpp b/libmodprobe/libmodprobe_ext_test.cpp
new file mode 100644
index 0000000..e79bfaf
--- /dev/null
+++ b/libmodprobe/libmodprobe_ext_test.cpp
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/stat.h>
+#include <sys/syscall.h>
+
+#include <string>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
+#include <gtest/gtest.h>
+
+#include <modprobe/modprobe.h>
+
+#include "libmodprobe_test.h"
+
+std::string Modprobe::GetKernelCmdline(void) {
+    return kernel_cmdline;
+}
+
+bool Modprobe::Insmod(const std::string& path_name, const std::string& parameters) {
+    auto deps = GetDependencies(MakeCanonical(path_name));
+    if (deps.empty()) {
+        return false;
+    }
+    if (std::find(test_modules.begin(), test_modules.end(), deps.front()) == test_modules.end()) {
+        return false;
+    }
+    for (auto it = modules_loaded.begin(); it != modules_loaded.end(); ++it) {
+        if (android::base::StartsWith(*it, path_name)) {
+            return true;
+        }
+    }
+    std::string options;
+    auto options_iter = module_options_.find(MakeCanonical(path_name));
+    if (options_iter != module_options_.end()) {
+        options = " " + options_iter->second;
+    }
+    if (!parameters.empty()) {
+        options = options + " " + parameters;
+    }
+
+    modules_loaded.emplace_back(path_name + options);
+    module_count_++;
+    return true;
+}
+
+bool Modprobe::Rmmod(const std::string& module_name) {
+    for (auto it = modules_loaded.begin(); it != modules_loaded.end(); it++) {
+        if (*it == module_name || android::base::StartsWith(*it, module_name + " ")) {
+            modules_loaded.erase(it);
+            return true;
+        }
+    }
+    return false;
+}
+
+bool Modprobe::ModuleExists(const std::string& module_name) {
+    auto deps = GetDependencies(module_name);
+    if (blocklist_enabled && module_blocklist_.count(module_name)) {
+        return false;
+    }
+    if (deps.empty()) {
+        // missing deps can happen in the case of an alias
+        return false;
+    }
+    return std::find(test_modules.begin(), test_modules.end(), deps.front()) != test_modules.end();
+}
diff --git a/libmodprobe/libmodprobe_test.cpp b/libmodprobe/libmodprobe_test.cpp
new file mode 100644
index 0000000..5919c49
--- /dev/null
+++ b/libmodprobe/libmodprobe_test.cpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <functional>
+
+#include <android-base/file.h>
+#include <android-base/macros.h>
+#include <android-base/unique_fd.h>
+#include <gtest/gtest.h>
+
+#include <modprobe/modprobe.h>
+
+#include "libmodprobe_test.h"
+
+// Used by libmodprobe_ext_test to check if requested modules are present.
+std::vector<std::string> test_modules;
+
+// Used by libmodprobe_ext_test to report which modules would have been loaded.
+std::vector<std::string> modules_loaded;
+
+// Used by libmodprobe_ext_test to fake a kernel commandline
+std::string kernel_cmdline;
+
+TEST(libmodprobe, Test) {
+    kernel_cmdline =
+            "flag1 flag2 test1.option1=50 test4.option3=\"set x\" test1.option2=60 "
+            "test8. test5.option1= test10.option1=1";
+    test_modules = {
+            "/test1.ko",  "/test2.ko",  "/test3.ko",  "/test4.ko",  "/test5.ko",
+            "/test6.ko",  "/test7.ko",  "/test8.ko",  "/test9.ko",  "/test10.ko",
+            "/test11.ko", "/test12.ko", "/test13.ko", "/test14.ko", "/test15.ko",
+    };
+
+    std::vector<std::string> expected_modules_loaded = {
+            "/test14.ko",
+            "/test15.ko",
+            "/test3.ko",
+            "/test4.ko option3=\"set x\"",
+            "/test1.ko option1=50 option2=60",
+            "/test6.ko",
+            "/test2.ko",
+            "/test5.ko option1=",
+            "/test8.ko",
+            "/test7.ko param1=4",
+            "/test9.ko param_x=1 param_y=2 param_z=3",
+            "/test10.ko option1=1",
+            "/test12.ko",
+            "/test11.ko",
+            "/test13.ko",
+    };
+
+    std::vector<std::string> expected_after_remove = {
+            "/test14.ko",
+            "/test15.ko",
+            "/test1.ko option1=50 option2=60",
+            "/test6.ko",
+            "/test2.ko",
+            "/test5.ko option1=",
+            "/test8.ko",
+            "/test7.ko param1=4",
+            "/test9.ko param_x=1 param_y=2 param_z=3",
+            "/test10.ko option1=1",
+            "/test12.ko",
+            "/test11.ko",
+            "/test13.ko",
+    };
+
+    const std::string modules_dep =
+            "test1.ko:\n"
+            "test2.ko:\n"
+            "test3.ko:\n"
+            "test4.ko: test3.ko\n"
+            "test5.ko: test2.ko test6.ko\n"
+            "test6.ko:\n"
+            "test7.ko:\n"
+            "test8.ko:\n"
+            "test9.ko:\n"
+            "test10.ko:\n"
+            "test11.ko:\n"
+            "test12.ko:\n"
+            "test13.ko:\n"
+            "test14.ko:\n"
+            "test15.ko:\n";
+
+    const std::string modules_softdep =
+            "softdep test7 pre: test8\n"
+            "softdep test9 post: test10\n"
+            "softdep test11 pre: test12 post: test13\n"
+            "softdep test3 pre: test141516\n";
+
+    const std::string modules_alias =
+            "# Aliases extracted from modules themselves.\n"
+            "\n"
+            "alias test141516 test14\n"
+            "alias test141516 test15\n"
+            "alias test141516 test16\n";
+
+    const std::string modules_options =
+            "options test7.ko param1=4\n"
+            "options test9.ko param_x=1 param_y=2 param_z=3\n"
+            "options test100.ko param_1=1\n";
+
+    const std::string modules_blocklist =
+            "blocklist test9.ko\n"
+            "blocklist test3.ko\n";
+
+    const std::string modules_load =
+            "test4.ko\n"
+            "test1.ko\n"
+            "test3.ko\n"
+            "test5.ko\n"
+            "test7.ko\n"
+            "test9.ko\n"
+            "test11.ko\n";
+
+    TemporaryDir dir;
+    auto dir_path = std::string(dir.path);
+    ASSERT_TRUE(android::base::WriteStringToFile(modules_alias, dir_path + "/modules.alias", 0600,
+                                                 getuid(), getgid()));
+
+    ASSERT_TRUE(android::base::WriteStringToFile(modules_dep, dir_path + "/modules.dep", 0600,
+                                                 getuid(), getgid()));
+    ASSERT_TRUE(android::base::WriteStringToFile(modules_softdep, dir_path + "/modules.softdep",
+                                                 0600, getuid(), getgid()));
+    ASSERT_TRUE(android::base::WriteStringToFile(modules_options, dir_path + "/modules.options",
+                                                 0600, getuid(), getgid()));
+    ASSERT_TRUE(android::base::WriteStringToFile(modules_load, dir_path + "/modules.load", 0600,
+                                                 getuid(), getgid()));
+    ASSERT_TRUE(android::base::WriteStringToFile(modules_blocklist, dir_path + "/modules.blocklist",
+                                                 0600, getuid(), getgid()));
+
+    for (auto i = test_modules.begin(); i != test_modules.end(); ++i) {
+        *i = dir.path + *i;
+    }
+
+    Modprobe m({dir.path});
+    EXPECT_TRUE(m.LoadListedModules());
+
+    GTEST_LOG_(INFO) << "Expected modules loaded (in order):";
+    for (auto i = expected_modules_loaded.begin(); i != expected_modules_loaded.end(); ++i) {
+        *i = dir.path + *i;
+        GTEST_LOG_(INFO) << "\"" << *i << "\"";
+    }
+    GTEST_LOG_(INFO) << "Actual modules loaded (in order):";
+    for (auto i = modules_loaded.begin(); i != modules_loaded.end(); ++i) {
+        GTEST_LOG_(INFO) << "\"" << *i << "\"";
+    }
+
+    EXPECT_TRUE(modules_loaded == expected_modules_loaded);
+
+    EXPECT_TRUE(m.GetModuleCount() == 15);
+    EXPECT_TRUE(m.Remove("test4"));
+
+    GTEST_LOG_(INFO) << "Expected modules loaded after removing test4 (in order):";
+    for (auto i = expected_after_remove.begin(); i != expected_after_remove.end(); ++i) {
+        *i = dir.path + *i;
+        GTEST_LOG_(INFO) << "\"" << *i << "\"";
+    }
+    GTEST_LOG_(INFO) << "Actual modules loaded after removing test4 (in order):";
+    for (auto i = modules_loaded.begin(); i != modules_loaded.end(); ++i) {
+        GTEST_LOG_(INFO) << "\"" << *i << "\"";
+    }
+
+    EXPECT_TRUE(modules_loaded == expected_after_remove);
+
+    m.EnableBlocklist(true);
+    EXPECT_FALSE(m.LoadWithAliases("test4", true));
+}
diff --git a/libmodprobe/libmodprobe_test.h b/libmodprobe/libmodprobe_test.h
new file mode 100644
index 0000000..e7b949f
--- /dev/null
+++ b/libmodprobe/libmodprobe_test.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+extern std::string kernel_cmdline;
+extern std::vector<std::string> test_modules;
+extern std::vector<std::string> modules_loaded;
diff --git a/libnativebridge/.clang-format b/libnativebridge/.clang-format
deleted file mode 120000
index fd0645f..0000000
--- a/libnativebridge/.clang-format
+++ /dev/null
@@ -1 +0,0 @@
-../.clang-format-2
\ No newline at end of file
diff --git a/libnativebridge/Android.bp b/libnativebridge/Android.bp
deleted file mode 100644
index 10d42e4..0000000
--- a/libnativebridge/Android.bp
+++ /dev/null
@@ -1,61 +0,0 @@
-cc_defaults {
-    name: "libnativebridge-defaults",
-    cflags: [
-        "-Werror",
-        "-Wall",
-    ],
-    cppflags: [
-        "-fvisibility=protected",
-    ],
-    header_libs: ["libnativebridge-headers"],
-    export_header_lib_headers: ["libnativebridge-headers"],
-}
-
-cc_library_headers {
-    name: "libnativebridge-headers",
-
-    host_supported: true,
-    export_include_dirs: ["include"],
-}
-
-cc_library {
-    name: "libnativebridge",
-    defaults: ["libnativebridge-defaults"],
-
-    host_supported: true,
-    srcs: ["native_bridge.cc"],
-    header_libs: [
-        "libbase_headers",
-    ],
-    shared_libs: [
-        "liblog",
-    ],
-    // TODO(jiyong): remove this line after aosp/885921 lands
-    export_include_dirs: ["include"],
-
-    target: {
-        android: {
-            version_script: "libnativebridge.map.txt",
-        },
-        linux: {
-            version_script: "libnativebridge.map.txt",
-        },
-    },
-
-    stubs: {
-        symbol_file: "libnativebridge.map.txt",
-        versions: ["1"],
-    },
-}
-
-// TODO(b/124250621): eliminate the need for this library
-cc_library {
-    name: "libnativebridge_lazy",
-    defaults: ["libnativebridge-defaults"],
-
-    host_supported: false,
-    srcs: ["native_bridge_lazy.cc"],
-    required: ["libnativebridge"],
-}
-
-subdirs = ["tests"]
diff --git a/libnativebridge/OWNERS b/libnativebridge/OWNERS
deleted file mode 100644
index daf87f4..0000000
--- a/libnativebridge/OWNERS
+++ /dev/null
@@ -1,4 +0,0 @@
-dimitry@google.com
-eaeltsin@google.com
-ngeoffray@google.com
-oth@google.com
diff --git a/libnativebridge/include/nativebridge/native_bridge.h b/libnativebridge/include/nativebridge/native_bridge.h
deleted file mode 100644
index e9c9500..0000000
--- a/libnativebridge/include/nativebridge/native_bridge.h
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef NATIVE_BRIDGE_H_
-#define NATIVE_BRIDGE_H_
-
-#include <signal.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "jni.h"
-
-#ifdef __cplusplus
-namespace android {
-extern "C" {
-#endif  // __cplusplus
-
-struct NativeBridgeRuntimeCallbacks;
-struct NativeBridgeRuntimeValues;
-
-// Function pointer type for sigaction. This is mostly the signature of a signal handler, except
-// for the return type. The runtime needs to know whether the signal was handled or should be given
-// to the chain.
-typedef bool (*NativeBridgeSignalHandlerFn)(int, siginfo_t*, void*);
-
-// Open the native bridge, if any. Should be called by Runtime::Init(). A null library filename
-// signals that we do not want to load a native bridge.
-bool LoadNativeBridge(const char* native_bridge_library_filename,
-                      const struct NativeBridgeRuntimeCallbacks* runtime_callbacks);
-
-// Quick check whether a native bridge will be needed. This is based off of the instruction set
-// of the process.
-bool NeedsNativeBridge(const char* instruction_set);
-
-// Do the early initialization part of the native bridge, if necessary. This should be done under
-// high privileges.
-bool PreInitializeNativeBridge(const char* app_data_dir, const char* instruction_set);
-
-// Initialize the native bridge, if any. Should be called by Runtime::DidForkFromZygote. The JNIEnv*
-// will be used to modify the app environment for the bridge.
-bool InitializeNativeBridge(JNIEnv* env, const char* instruction_set);
-
-// Unload the native bridge, if any. Should be called by Runtime::DidForkFromZygote.
-void UnloadNativeBridge();
-
-// Check whether a native bridge is available (opened or initialized). Requires a prior call to
-// LoadNativeBridge.
-bool NativeBridgeAvailable();
-
-// Check whether a native bridge is available (initialized). Requires a prior call to
-// LoadNativeBridge & InitializeNativeBridge.
-bool NativeBridgeInitialized();
-
-// Load a shared library that is supported by the native bridge.
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Use NativeBridgeLoadLibraryExt() instead in namespace scenario.
-void* NativeBridgeLoadLibrary(const char* libpath, int flag);
-
-// Get a native bridge trampoline for specified native method.
-void* NativeBridgeGetTrampoline(void* handle, const char* name, const char* shorty, uint32_t len);
-
-// True if native library paths are valid and is for an ABI that is supported by native bridge.
-// The *libpath* must point to a library.
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Use NativeBridgeIsPathSupported() instead in namespace scenario.
-bool NativeBridgeIsSupported(const char* libpath);
-
-// Returns the version number of the native bridge. This information is available after a
-// successful LoadNativeBridge() and before closing it, that is, as long as NativeBridgeAvailable()
-// returns true. Returns 0 otherwise.
-uint32_t NativeBridgeGetVersion();
-
-// Returns a signal handler that the bridge would like to be managed. Only valid for a native
-// bridge supporting the version 2 interface. Will return null if the bridge does not support
-// version 2, or if it doesn't have a signal handler it wants to be known.
-NativeBridgeSignalHandlerFn NativeBridgeGetSignalHandler(int signal);
-
-// Returns whether we have seen a native bridge error. This could happen because the library
-// was not found, rejected, could not be initialized and so on.
-//
-// This functionality is mainly for testing.
-bool NativeBridgeError();
-
-// Returns whether a given string is acceptable as a native bridge library filename.
-//
-// This functionality is exposed mainly for testing.
-bool NativeBridgeNameAcceptable(const char* native_bridge_library_filename);
-
-// Decrements the reference count on the dynamic library handler. If the reference count drops
-// to zero then the dynamic library is unloaded. Returns 0 on success and non-zero on error.
-int NativeBridgeUnloadLibrary(void* handle);
-
-// Get last error message of native bridge when fail to load library or search symbol.
-// This is reflection of dlerror() for native bridge.
-const char* NativeBridgeGetError();
-
-struct native_bridge_namespace_t;
-
-// True if native library paths are valid and is for an ABI that is supported by native bridge.
-// Different from NativeBridgeIsSupported(), the *path* here must be a directory containing
-// libraries of an ABI.
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Use NativeBridgeIsSupported() instead in non-namespace scenario.
-bool NativeBridgeIsPathSupported(const char* path);
-
-// Initializes anonymous namespace.
-// NativeBridge's peer of android_init_anonymous_namespace() of dynamic linker.
-//
-// The anonymous namespace is used in the case when a NativeBridge implementation
-// cannot identify the caller of dlopen/dlsym which happens for the code not loaded
-// by dynamic linker; for example calls from the mono-compiled code.
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Should not use in non-namespace scenario.
-bool NativeBridgeInitAnonymousNamespace(const char* public_ns_sonames,
-                                        const char* anon_ns_library_path);
-
-// Create new namespace in which native libraries will be loaded.
-// NativeBridge's peer of android_create_namespace() of dynamic linker.
-//
-// The libraries in the namespace are searched by folowing order:
-// 1. ld_library_path (Think of this as namespace-local LD_LIBRARY_PATH)
-// 2. In directories specified by DT_RUNPATH of the "needed by" binary.
-// 3. deault_library_path (This of this as namespace-local default library path)
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Should not use in non-namespace scenario.
-struct native_bridge_namespace_t* NativeBridgeCreateNamespace(
-    const char* name, const char* ld_library_path, const char* default_library_path, uint64_t type,
-    const char* permitted_when_isolated_path, struct native_bridge_namespace_t* parent_ns);
-
-// Creates a link which shares some libraries from one namespace to another.
-// NativeBridge's peer of android_link_namespaces() of dynamic linker.
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Should not use in non-namespace scenario.
-bool NativeBridgeLinkNamespaces(struct native_bridge_namespace_t* from,
-                                struct native_bridge_namespace_t* to,
-                                const char* shared_libs_sonames);
-
-// Load a shared library with namespace key that is supported by the native bridge.
-// NativeBridge's peer of android_dlopen_ext() of dynamic linker, only supports namespace
-// extension.
-//
-// Starting with v3, NativeBridge has two scenarios: with/without namespace.
-// Use NativeBridgeLoadLibrary() instead in non-namespace scenario.
-void* NativeBridgeLoadLibraryExt(const char* libpath, int flag,
-                                 struct native_bridge_namespace_t* ns);
-
-// Returns exported namespace by the name. This is a reflection of
-// android_get_exported_namespace function. Introduced in v5.
-struct native_bridge_namespace_t* NativeBridgeGetExportedNamespace(const char* name);
-
-// Native bridge interfaces to runtime.
-struct NativeBridgeCallbacks {
-  // Version number of the interface.
-  uint32_t version;
-
-  // Initialize native bridge. Native bridge's internal implementation must ensure MT safety and
-  // that the native bridge is initialized only once. Thus it is OK to call this interface for an
-  // already initialized native bridge.
-  //
-  // Parameters:
-  //   runtime_cbs [IN] the pointer to NativeBridgeRuntimeCallbacks.
-  // Returns:
-  //   true if initialization was successful.
-  bool (*initialize)(const struct NativeBridgeRuntimeCallbacks* runtime_cbs,
-                     const char* private_dir, const char* instruction_set);
-
-  // Load a shared library that is supported by the native bridge.
-  //
-  // Parameters:
-  //   libpath [IN] path to the shared library
-  //   flag [IN] the stardard RTLD_XXX defined in bionic dlfcn.h
-  // Returns:
-  //   The opaque handle of the shared library if sucessful, otherwise NULL
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Use loadLibraryExt instead in namespace scenario.
-  void* (*loadLibrary)(const char* libpath, int flag);
-
-  // Get a native bridge trampoline for specified native method. The trampoline has same
-  // sigature as the native method.
-  //
-  // Parameters:
-  //   handle [IN] the handle returned from loadLibrary
-  //   shorty [IN] short descriptor of native method
-  //   len [IN] length of shorty
-  // Returns:
-  //   address of trampoline if successful, otherwise NULL
-  void* (*getTrampoline)(void* handle, const char* name, const char* shorty, uint32_t len);
-
-  // Check whether native library is valid and is for an ABI that is supported by native bridge.
-  //
-  // Parameters:
-  //   libpath [IN] path to the shared library
-  // Returns:
-  //   TRUE if library is supported by native bridge, FALSE otherwise
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Use isPathSupported instead in namespace scenario.
-  bool (*isSupported)(const char* libpath);
-
-  // Provide environment values required by the app running with native bridge according to the
-  // instruction set.
-  //
-  // Parameters:
-  //   instruction_set [IN] the instruction set of the app
-  // Returns:
-  //   NULL if not supported by native bridge.
-  //   Otherwise, return all environment values to be set after fork.
-  const struct NativeBridgeRuntimeValues* (*getAppEnv)(const char* instruction_set);
-
-  // Added callbacks in version 2.
-
-  // Check whether the bridge is compatible with the given version. A bridge may decide not to be
-  // forwards- or backwards-compatible, and libnativebridge will then stop using it.
-  //
-  // Parameters:
-  //   bridge_version [IN] the version of libnativebridge.
-  // Returns:
-  //   true if the native bridge supports the given version of libnativebridge.
-  bool (*isCompatibleWith)(uint32_t bridge_version);
-
-  // A callback to retrieve a native bridge's signal handler for the specified signal. The runtime
-  // will ensure that the signal handler is being called after the runtime's own handler, but before
-  // all chained handlers. The native bridge should not try to install the handler by itself, as
-  // that will potentially lead to cycles.
-  //
-  // Parameters:
-  //   signal [IN] the signal for which the handler is asked for. Currently, only SIGSEGV is
-  //                 supported by the runtime.
-  // Returns:
-  //   NULL if the native bridge doesn't use a handler or doesn't want it to be managed by the
-  //   runtime.
-  //   Otherwise, a pointer to the signal handler.
-  NativeBridgeSignalHandlerFn (*getSignalHandler)(int signal);
-
-  // Added callbacks in version 3.
-
-  // Decrements the reference count on the dynamic library handler. If the reference count drops
-  // to zero then the dynamic library is unloaded.
-  //
-  // Parameters:
-  //   handle [IN] the handler of a dynamic library.
-  //
-  // Returns:
-  //   0 on success, and nonzero on error.
-  int (*unloadLibrary)(void* handle);
-
-  // Dump the last failure message of native bridge when fail to load library or search symbol.
-  //
-  // Parameters:
-  //
-  // Returns:
-  //   A string describing the most recent error that occurred when load library
-  //   or lookup symbol via native bridge.
-  const char* (*getError)();
-
-  // Check whether library paths are supported by native bridge.
-  //
-  // Parameters:
-  //   library_path [IN] search paths for native libraries (directories separated by ':')
-  // Returns:
-  //   TRUE if libraries within search paths are supported by native bridge, FALSE otherwise
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Use isSupported instead in non-namespace scenario.
-  bool (*isPathSupported)(const char* library_path);
-
-  // Initializes anonymous namespace at native bridge side.
-  // NativeBridge's peer of android_init_anonymous_namespace() of dynamic linker.
-  //
-  // The anonymous namespace is used in the case when a NativeBridge implementation
-  // cannot identify the caller of dlopen/dlsym which happens for the code not loaded
-  // by dynamic linker; for example calls from the mono-compiled code.
-  //
-  // Parameters:
-  //   public_ns_sonames [IN] the name of "public" libraries.
-  //   anon_ns_library_path [IN] the library search path of (anonymous) namespace.
-  // Returns:
-  //   true if the pass is ok.
-  //   Otherwise, false.
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Should not use in non-namespace scenario.
-  bool (*initAnonymousNamespace)(const char* public_ns_sonames, const char* anon_ns_library_path);
-
-  // Create new namespace in which native libraries will be loaded.
-  // NativeBridge's peer of android_create_namespace() of dynamic linker.
-  //
-  // Parameters:
-  //   name [IN] the name of the namespace.
-  //   ld_library_path [IN] the first set of library search paths of the namespace.
-  //   default_library_path [IN] the second set of library search path of the namespace.
-  //   type [IN] the attribute of the namespace.
-  //   permitted_when_isolated_path [IN] the permitted path for isolated namespace(if it is).
-  //   parent_ns [IN] the pointer of the parent namespace to be inherited from.
-  // Returns:
-  //   native_bridge_namespace_t* for created namespace or nullptr in the case of error.
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Should not use in non-namespace scenario.
-  struct native_bridge_namespace_t* (*createNamespace)(const char* name,
-                                                       const char* ld_library_path,
-                                                       const char* default_library_path,
-                                                       uint64_t type,
-                                                       const char* permitted_when_isolated_path,
-                                                       struct native_bridge_namespace_t* parent_ns);
-
-  // Creates a link which shares some libraries from one namespace to another.
-  // NativeBridge's peer of android_link_namespaces() of dynamic linker.
-  //
-  // Parameters:
-  //   from [IN] the namespace where libraries are accessed.
-  //   to [IN] the namespace where libraries are loaded.
-  //   shared_libs_sonames [IN] the libraries to be shared.
-  //
-  // Returns:
-  //   Whether successed or not.
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Should not use in non-namespace scenario.
-  bool (*linkNamespaces)(struct native_bridge_namespace_t* from,
-                         struct native_bridge_namespace_t* to, const char* shared_libs_sonames);
-
-  // Load a shared library within a namespace.
-  // NativeBridge's peer of android_dlopen_ext() of dynamic linker, only supports namespace
-  // extension.
-  //
-  // Parameters:
-  //   libpath [IN] path to the shared library
-  //   flag [IN] the stardard RTLD_XXX defined in bionic dlfcn.h
-  //   ns [IN] the pointer of the namespace in which the library should be loaded.
-  // Returns:
-  //   The opaque handle of the shared library if sucessful, otherwise NULL
-  //
-  // Starting with v3, NativeBridge has two scenarios: with/without namespace.
-  // Use loadLibrary instead in non-namespace scenario.
-  void* (*loadLibraryExt)(const char* libpath, int flag, struct native_bridge_namespace_t* ns);
-
-  // Get native bridge version of vendor namespace.
-  // The vendor namespace is the namespace used to load vendor public libraries.
-  // With O release this namespace can be different from the default namespace.
-  // For the devices without enable vendor namespaces this function should return null
-  //
-  // Returns:
-  //   vendor namespace or null if it was not set up for the device
-  //
-  // Starting with v5 (Android Q) this function is no longer used.
-  // Use getExportedNamespace() below.
-  struct native_bridge_namespace_t* (*getVendorNamespace)();
-
-  // Get native bridge version of exported namespace. Peer of
-  // android_get_exported_namespace(const char*) function.
-  //
-  // Returns:
-  //   exported namespace or null if it was not set up for the device
-  struct native_bridge_namespace_t* (*getExportedNamespace)(const char* name);
-};
-
-// Runtime interfaces to native bridge.
-struct NativeBridgeRuntimeCallbacks {
-  // Get shorty of a Java method. The shorty is supposed to be persistent in memory.
-  //
-  // Parameters:
-  //   env [IN] pointer to JNIenv.
-  //   mid [IN] Java methodID.
-  // Returns:
-  //   short descriptor for method.
-  const char* (*getMethodShorty)(JNIEnv* env, jmethodID mid);
-
-  // Get number of native methods for specified class.
-  //
-  // Parameters:
-  //   env [IN] pointer to JNIenv.
-  //   clazz [IN] Java class object.
-  // Returns:
-  //   number of native methods.
-  uint32_t (*getNativeMethodCount)(JNIEnv* env, jclass clazz);
-
-  // Get at most 'method_count' native methods for specified class 'clazz'. Results are outputed
-  // via 'methods' [OUT]. The signature pointer in JNINativeMethod is reused as the method shorty.
-  //
-  // Parameters:
-  //   env [IN] pointer to JNIenv.
-  //   clazz [IN] Java class object.
-  //   methods [OUT] array of method with the name, shorty, and fnPtr.
-  //   method_count [IN] max number of elements in methods.
-  // Returns:
-  //   number of method it actually wrote to methods.
-  uint32_t (*getNativeMethods)(JNIEnv* env, jclass clazz, JNINativeMethod* methods,
-                               uint32_t method_count);
-};
-
-#ifdef __cplusplus
-}  // extern "C"
-}  // namespace android
-#endif  // __cplusplus
-
-#endif  // NATIVE_BRIDGE_H_
diff --git a/libnativebridge/libnativebridge.map.txt b/libnativebridge/libnativebridge.map.txt
deleted file mode 100644
index a6841a3..0000000
--- a/libnativebridge/libnativebridge.map.txt
+++ /dev/null
@@ -1,45 +0,0 @@
-#
-# Copyright (C) 2019 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# TODO(b/122710865): Most of these uses come from libnativeloader, which should be bundled
-# together with libnativebridge in the APEX. Once this happens, prune this list.
-LIBNATIVEBRIDGE_1 {
-  global:
-    NativeBridgeIsSupported;
-    NativeBridgeLoadLibrary;
-    NativeBridgeUnloadLibrary;
-    NativeBridgeGetError;
-    NativeBridgeIsPathSupported;
-    NativeBridgeCreateNamespace;
-    NativeBridgeGetExportedNamespace;
-    NativeBridgeLinkNamespaces;
-    NativeBridgeLoadLibraryExt;
-    NativeBridgeInitAnonymousNamespace;
-    NativeBridgeInitialized;
-    NativeBridgeGetTrampoline;
-    LoadNativeBridge;
-    PreInitializeNativeBridge;
-    InitializeNativeBridge;
-    NativeBridgeGetVersion;
-    NativeBridgeGetSignalHandler;
-    UnloadNativeBridge;
-    NativeBridgeAvailable;
-    NeedsNativeBridge;
-    NativeBridgeError;
-    NativeBridgeNameAcceptable;
-  local:
-    *;
-};
diff --git a/libnativebridge/native_bridge.cc b/libnativebridge/native_bridge.cc
deleted file mode 100644
index 9adba9a..0000000
--- a/libnativebridge/native_bridge.cc
+++ /dev/null
@@ -1,646 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "nativebridge"
-
-#include "nativebridge/native_bridge.h"
-
-#include <dlfcn.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <cstring>
-
-#include <android-base/macros.h>
-#include <log/log.h>
-
-namespace android {
-
-#ifdef __APPLE__
-template <typename T>
-void UNUSED(const T&) {}
-#endif
-
-extern "C" {
-
-// Environment values required by the apps running with native bridge.
-struct NativeBridgeRuntimeValues {
-    const char* os_arch;
-    const char* cpu_abi;
-    const char* cpu_abi2;
-    const char* *supported_abis;
-    int32_t abi_count;
-};
-
-// The symbol name exposed by native-bridge with the type of NativeBridgeCallbacks.
-static constexpr const char* kNativeBridgeInterfaceSymbol = "NativeBridgeItf";
-
-enum class NativeBridgeState {
-  kNotSetup,                        // Initial state.
-  kOpened,                          // After successful dlopen.
-  kPreInitialized,                  // After successful pre-initialization.
-  kInitialized,                     // After successful initialization.
-  kClosed                           // Closed or errors.
-};
-
-static constexpr const char* kNotSetupString = "kNotSetup";
-static constexpr const char* kOpenedString = "kOpened";
-static constexpr const char* kPreInitializedString = "kPreInitialized";
-static constexpr const char* kInitializedString = "kInitialized";
-static constexpr const char* kClosedString = "kClosed";
-
-static const char* GetNativeBridgeStateString(NativeBridgeState state) {
-  switch (state) {
-    case NativeBridgeState::kNotSetup:
-      return kNotSetupString;
-
-    case NativeBridgeState::kOpened:
-      return kOpenedString;
-
-    case NativeBridgeState::kPreInitialized:
-      return kPreInitializedString;
-
-    case NativeBridgeState::kInitialized:
-      return kInitializedString;
-
-    case NativeBridgeState::kClosed:
-      return kClosedString;
-  }
-}
-
-// Current state of the native bridge.
-static NativeBridgeState state = NativeBridgeState::kNotSetup;
-
-// The version of NativeBridge implementation.
-// Different Nativebridge interface needs the service of different version of
-// Nativebridge implementation.
-// Used by isCompatibleWith() which is introduced in v2.
-enum NativeBridgeImplementationVersion {
-  // first version, not used.
-  DEFAULT_VERSION = 1,
-  // The version which signal semantic is introduced.
-  SIGNAL_VERSION = 2,
-  // The version which namespace semantic is introduced.
-  NAMESPACE_VERSION = 3,
-  // The version with vendor namespaces
-  VENDOR_NAMESPACE_VERSION = 4,
-  // The version with runtime namespaces
-  RUNTIME_NAMESPACE_VERSION = 5,
-};
-
-// Whether we had an error at some point.
-static bool had_error = false;
-
-// Handle of the loaded library.
-static void* native_bridge_handle = nullptr;
-// Pointer to the callbacks. Available as soon as LoadNativeBridge succeeds, but only initialized
-// later.
-static const NativeBridgeCallbacks* callbacks = nullptr;
-// Callbacks provided by the environment to the bridge. Passed to LoadNativeBridge.
-static const NativeBridgeRuntimeCallbacks* runtime_callbacks = nullptr;
-
-// The app's code cache directory.
-static char* app_code_cache_dir = nullptr;
-
-// Code cache directory (relative to the application private directory)
-// Ideally we'd like to call into framework to retrieve this name. However that's considered an
-// implementation detail and will require either hacks or consistent refactorings. We compromise
-// and hard code the directory name again here.
-static constexpr const char* kCodeCacheDir = "code_cache";
-
-// Characters allowed in a native bridge filename. The first character must
-// be in [a-zA-Z] (expected 'l' for "libx"). The rest must be in [a-zA-Z0-9._-].
-static bool CharacterAllowed(char c, bool first) {
-  if (first) {
-    return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
-  } else {
-    return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') ||
-           (c == '.') || (c == '_') || (c == '-');
-  }
-}
-
-static void ReleaseAppCodeCacheDir() {
-  if (app_code_cache_dir != nullptr) {
-    delete[] app_code_cache_dir;
-    app_code_cache_dir = nullptr;
-  }
-}
-
-// We only allow simple names for the library. It is supposed to be a file in
-// /system/lib or /vendor/lib. Only allow a small range of characters, that is
-// names consisting of [a-zA-Z0-9._-] and starting with [a-zA-Z].
-bool NativeBridgeNameAcceptable(const char* nb_library_filename) {
-  const char* ptr = nb_library_filename;
-  if (*ptr == 0) {
-    // Emptry string. Allowed, means no native bridge.
-    return true;
-  } else {
-    // First character must be [a-zA-Z].
-    if (!CharacterAllowed(*ptr, true))  {
-      // Found an invalid fist character, don't accept.
-      ALOGE("Native bridge library %s has been rejected for first character %c",
-            nb_library_filename,
-            *ptr);
-      return false;
-    } else {
-      // For the rest, be more liberal.
-      ptr++;
-      while (*ptr != 0) {
-        if (!CharacterAllowed(*ptr, false)) {
-          // Found an invalid character, don't accept.
-          ALOGE("Native bridge library %s has been rejected for %c", nb_library_filename, *ptr);
-          return false;
-        }
-        ptr++;
-      }
-    }
-    return true;
-  }
-}
-
-// The policy of invoking Nativebridge changed in v3 with/without namespace.
-// Suggest Nativebridge implementation not maintain backward-compatible.
-static bool isCompatibleWith(const uint32_t version) {
-  // Libnativebridge is now designed to be forward-compatible. So only "0" is an unsupported
-  // version.
-  if (callbacks == nullptr || callbacks->version == 0 || version == 0) {
-    return false;
-  }
-
-  // If this is a v2+ bridge, it may not be forwards- or backwards-compatible. Check.
-  if (callbacks->version >= SIGNAL_VERSION) {
-    return callbacks->isCompatibleWith(version);
-  }
-
-  return true;
-}
-
-static void CloseNativeBridge(bool with_error) {
-  state = NativeBridgeState::kClosed;
-  had_error |= with_error;
-  ReleaseAppCodeCacheDir();
-}
-
-bool LoadNativeBridge(const char* nb_library_filename,
-                      const NativeBridgeRuntimeCallbacks* runtime_cbs) {
-  // We expect only one place that calls LoadNativeBridge: Runtime::Init. At that point we are not
-  // multi-threaded, so we do not need locking here.
-
-  if (state != NativeBridgeState::kNotSetup) {
-    // Setup has been called before. Ignore this call.
-    if (nb_library_filename != nullptr) {  // Avoids some log-spam for dalvikvm.
-      ALOGW("Called LoadNativeBridge for an already set up native bridge. State is %s.",
-            GetNativeBridgeStateString(state));
-    }
-    // Note: counts as an error, even though the bridge may be functional.
-    had_error = true;
-    return false;
-  }
-
-  if (nb_library_filename == nullptr || *nb_library_filename == 0) {
-    CloseNativeBridge(false);
-    return false;
-  } else {
-    if (!NativeBridgeNameAcceptable(nb_library_filename)) {
-      CloseNativeBridge(true);
-    } else {
-      // Try to open the library.
-      void* handle = dlopen(nb_library_filename, RTLD_LAZY);
-      if (handle != nullptr) {
-        callbacks = reinterpret_cast<NativeBridgeCallbacks*>(dlsym(handle,
-                                                                   kNativeBridgeInterfaceSymbol));
-        if (callbacks != nullptr) {
-          if (isCompatibleWith(NAMESPACE_VERSION)) {
-            // Store the handle for later.
-            native_bridge_handle = handle;
-          } else {
-            callbacks = nullptr;
-            dlclose(handle);
-            ALOGW("Unsupported native bridge interface.");
-          }
-        } else {
-          dlclose(handle);
-        }
-      }
-
-      // Two failure conditions: could not find library (dlopen failed), or could not find native
-      // bridge interface (dlsym failed). Both are an error and close the native bridge.
-      if (callbacks == nullptr) {
-        CloseNativeBridge(true);
-      } else {
-        runtime_callbacks = runtime_cbs;
-        state = NativeBridgeState::kOpened;
-      }
-    }
-    return state == NativeBridgeState::kOpened;
-  }
-}
-
-bool NeedsNativeBridge(const char* instruction_set) {
-  if (instruction_set == nullptr) {
-    ALOGE("Null instruction set in NeedsNativeBridge.");
-    return false;
-  }
-  return strncmp(instruction_set, ABI_STRING, strlen(ABI_STRING) + 1) != 0;
-}
-
-bool PreInitializeNativeBridge(const char* app_data_dir_in, const char* instruction_set) {
-  if (state != NativeBridgeState::kOpened) {
-    ALOGE("Invalid state: native bridge is expected to be opened.");
-    CloseNativeBridge(true);
-    return false;
-  }
-
-  if (app_data_dir_in == nullptr) {
-    ALOGE("Application private directory cannot be null.");
-    CloseNativeBridge(true);
-    return false;
-  }
-
-  // Create the path to the application code cache directory.
-  // The memory will be release after Initialization or when the native bridge is closed.
-  const size_t len = strlen(app_data_dir_in) + strlen(kCodeCacheDir) + 2; // '\0' + '/'
-  app_code_cache_dir = new char[len];
-  snprintf(app_code_cache_dir, len, "%s/%s", app_data_dir_in, kCodeCacheDir);
-
-  // Bind-mount /system/lib{,64}/<isa>/cpuinfo to /proc/cpuinfo.
-  // Failure is not fatal and will keep the native bridge in kPreInitialized.
-  state = NativeBridgeState::kPreInitialized;
-
-#ifndef __APPLE__
-  if (instruction_set == nullptr) {
-    return true;
-  }
-  size_t isa_len = strlen(instruction_set);
-  if (isa_len > 10) {
-    // 10 is a loose upper bound on the currently known instruction sets (a tight bound is 7 for
-    // x86_64 [including the trailing \0]). This is so we don't have to change here if there will
-    // be another instruction set in the future.
-    ALOGW("Instruction set %s is malformed, must be less than or equal to 10 characters.",
-          instruction_set);
-    return true;
-  }
-
-  // If the file does not exist, the mount command will fail,
-  // so we save the extra file existence check.
-  char cpuinfo_path[1024];
-
-#if defined(__ANDROID__)
-  snprintf(cpuinfo_path, sizeof(cpuinfo_path), "/system/lib"
-#ifdef __LP64__
-      "64"
-#endif  // __LP64__
-      "/%s/cpuinfo", instruction_set);
-#else   // !__ANDROID__
-  // To be able to test on the host, we hardwire a relative path.
-  snprintf(cpuinfo_path, sizeof(cpuinfo_path), "./cpuinfo");
-#endif
-
-  // Bind-mount.
-  if (TEMP_FAILURE_RETRY(mount(cpuinfo_path,        // Source.
-                               "/proc/cpuinfo",     // Target.
-                               nullptr,             // FS type.
-                               MS_BIND,             // Mount flags: bind mount.
-                               nullptr)) == -1) {   // "Data."
-    ALOGW("Failed to bind-mount %s as /proc/cpuinfo: %s", cpuinfo_path, strerror(errno));
-  }
-#else  // __APPLE__
-  UNUSED(instruction_set);
-  ALOGW("Mac OS does not support bind-mounting. Host simulation of native bridge impossible.");
-#endif
-
-  return true;
-}
-
-static void SetCpuAbi(JNIEnv* env, jclass build_class, const char* field, const char* value) {
-  if (value != nullptr) {
-    jfieldID field_id = env->GetStaticFieldID(build_class, field, "Ljava/lang/String;");
-    if (field_id == nullptr) {
-      env->ExceptionClear();
-      ALOGW("Could not find %s field.", field);
-      return;
-    }
-
-    jstring str = env->NewStringUTF(value);
-    if (str == nullptr) {
-      env->ExceptionClear();
-      ALOGW("Could not create string %s.", value);
-      return;
-    }
-
-    env->SetStaticObjectField(build_class, field_id, str);
-  }
-}
-
-// Set up the environment for the bridged app.
-static void SetupEnvironment(const NativeBridgeCallbacks* callbacks, JNIEnv* env, const char* isa) {
-  // Need a JNIEnv* to do anything.
-  if (env == nullptr) {
-    ALOGW("No JNIEnv* to set up app environment.");
-    return;
-  }
-
-  // Query the bridge for environment values.
-  const struct NativeBridgeRuntimeValues* env_values = callbacks->getAppEnv(isa);
-  if (env_values == nullptr) {
-    return;
-  }
-
-  // Keep the JNIEnv clean.
-  jint success = env->PushLocalFrame(16);  // That should be small and large enough.
-  if (success < 0) {
-    // Out of memory, really borked.
-    ALOGW("Out of memory while setting up app environment.");
-    env->ExceptionClear();
-    return;
-  }
-
-  // Reset CPU_ABI & CPU_ABI2 to values required by the apps running with native bridge.
-  if (env_values->cpu_abi != nullptr || env_values->cpu_abi2 != nullptr ||
-      env_values->abi_count >= 0) {
-    jclass bclass_id = env->FindClass("android/os/Build");
-    if (bclass_id != nullptr) {
-      SetCpuAbi(env, bclass_id, "CPU_ABI", env_values->cpu_abi);
-      SetCpuAbi(env, bclass_id, "CPU_ABI2", env_values->cpu_abi2);
-    } else {
-      // For example in a host test environment.
-      env->ExceptionClear();
-      ALOGW("Could not find Build class.");
-    }
-  }
-
-  if (env_values->os_arch != nullptr) {
-    jclass sclass_id = env->FindClass("java/lang/System");
-    if (sclass_id != nullptr) {
-      jmethodID set_prop_id = env->GetStaticMethodID(sclass_id, "setUnchangeableSystemProperty",
-          "(Ljava/lang/String;Ljava/lang/String;)V");
-      if (set_prop_id != nullptr) {
-        // Init os.arch to the value reqired by the apps running with native bridge.
-        env->CallStaticVoidMethod(sclass_id, set_prop_id, env->NewStringUTF("os.arch"),
-            env->NewStringUTF(env_values->os_arch));
-      } else {
-        env->ExceptionClear();
-        ALOGW("Could not find System#setUnchangeableSystemProperty.");
-      }
-    } else {
-      env->ExceptionClear();
-      ALOGW("Could not find System class.");
-    }
-  }
-
-  // Make it pristine again.
-  env->PopLocalFrame(nullptr);
-}
-
-bool InitializeNativeBridge(JNIEnv* env, const char* instruction_set) {
-  // We expect only one place that calls InitializeNativeBridge: Runtime::DidForkFromZygote. At that
-  // point we are not multi-threaded, so we do not need locking here.
-
-  if (state == NativeBridgeState::kPreInitialized) {
-    // Check for code cache: if it doesn't exist try to create it.
-    struct stat st;
-    if (stat(app_code_cache_dir, &st) == -1) {
-      if (errno == ENOENT) {
-        if (mkdir(app_code_cache_dir, S_IRWXU | S_IRWXG | S_IXOTH) == -1) {
-          ALOGW("Cannot create code cache directory %s: %s.", app_code_cache_dir, strerror(errno));
-          ReleaseAppCodeCacheDir();
-        }
-      } else {
-        ALOGW("Cannot stat code cache directory %s: %s.", app_code_cache_dir, strerror(errno));
-        ReleaseAppCodeCacheDir();
-      }
-    } else if (!S_ISDIR(st.st_mode)) {
-      ALOGW("Code cache is not a directory %s.", app_code_cache_dir);
-      ReleaseAppCodeCacheDir();
-    }
-
-    // If we're still PreInitialized (dind't fail the code cache checks) try to initialize.
-    if (state == NativeBridgeState::kPreInitialized) {
-      if (callbacks->initialize(runtime_callbacks, app_code_cache_dir, instruction_set)) {
-        SetupEnvironment(callbacks, env, instruction_set);
-        state = NativeBridgeState::kInitialized;
-        // We no longer need the code cache path, release the memory.
-        ReleaseAppCodeCacheDir();
-      } else {
-        // Unload the library.
-        dlclose(native_bridge_handle);
-        CloseNativeBridge(true);
-      }
-    }
-  } else {
-    CloseNativeBridge(true);
-  }
-
-  return state == NativeBridgeState::kInitialized;
-}
-
-void UnloadNativeBridge() {
-  // We expect only one place that calls UnloadNativeBridge: Runtime::DidForkFromZygote. At that
-  // point we are not multi-threaded, so we do not need locking here.
-
-  switch(state) {
-    case NativeBridgeState::kOpened:
-    case NativeBridgeState::kPreInitialized:
-    case NativeBridgeState::kInitialized:
-      // Unload.
-      dlclose(native_bridge_handle);
-      CloseNativeBridge(false);
-      break;
-
-    case NativeBridgeState::kNotSetup:
-      // Not even set up. Error.
-      CloseNativeBridge(true);
-      break;
-
-    case NativeBridgeState::kClosed:
-      // Ignore.
-      break;
-  }
-}
-
-bool NativeBridgeError() {
-  return had_error;
-}
-
-bool NativeBridgeAvailable() {
-  return state == NativeBridgeState::kOpened
-      || state == NativeBridgeState::kPreInitialized
-      || state == NativeBridgeState::kInitialized;
-}
-
-bool NativeBridgeInitialized() {
-  // Calls of this are supposed to happen in a state where the native bridge is stable, i.e., after
-  // Runtime::DidForkFromZygote. In that case we do not need a lock.
-  return state == NativeBridgeState::kInitialized;
-}
-
-void* NativeBridgeLoadLibrary(const char* libpath, int flag) {
-  if (NativeBridgeInitialized()) {
-    return callbacks->loadLibrary(libpath, flag);
-  }
-  return nullptr;
-}
-
-void* NativeBridgeGetTrampoline(void* handle, const char* name, const char* shorty,
-                                uint32_t len) {
-  if (NativeBridgeInitialized()) {
-    return callbacks->getTrampoline(handle, name, shorty, len);
-  }
-  return nullptr;
-}
-
-bool NativeBridgeIsSupported(const char* libpath) {
-  if (NativeBridgeInitialized()) {
-    return callbacks->isSupported(libpath);
-  }
-  return false;
-}
-
-uint32_t NativeBridgeGetVersion() {
-  if (NativeBridgeAvailable()) {
-    return callbacks->version;
-  }
-  return 0;
-}
-
-NativeBridgeSignalHandlerFn NativeBridgeGetSignalHandler(int signal) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(SIGNAL_VERSION)) {
-      return callbacks->getSignalHandler(signal);
-    } else {
-      ALOGE("not compatible with version %d, cannot get signal handler", SIGNAL_VERSION);
-    }
-  }
-  return nullptr;
-}
-
-int NativeBridgeUnloadLibrary(void* handle) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->unloadLibrary(handle);
-    } else {
-      ALOGE("not compatible with version %d, cannot unload library", NAMESPACE_VERSION);
-    }
-  }
-  return -1;
-}
-
-const char* NativeBridgeGetError() {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->getError();
-    } else {
-      return "native bridge implementation is not compatible with version 3, cannot get message";
-    }
-  }
-  return "native bridge is not initialized";
-}
-
-bool NativeBridgeIsPathSupported(const char* path) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->isPathSupported(path);
-    } else {
-      ALOGE("not compatible with version %d, cannot check via library path", NAMESPACE_VERSION);
-    }
-  }
-  return false;
-}
-
-bool NativeBridgeInitAnonymousNamespace(const char* public_ns_sonames,
-                                        const char* anon_ns_library_path) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->initAnonymousNamespace(public_ns_sonames, anon_ns_library_path);
-    } else {
-      ALOGE("not compatible with version %d, cannot init namespace", NAMESPACE_VERSION);
-    }
-  }
-
-  return false;
-}
-
-native_bridge_namespace_t* NativeBridgeCreateNamespace(const char* name,
-                                                       const char* ld_library_path,
-                                                       const char* default_library_path,
-                                                       uint64_t type,
-                                                       const char* permitted_when_isolated_path,
-                                                       native_bridge_namespace_t* parent_ns) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->createNamespace(name,
-                                        ld_library_path,
-                                        default_library_path,
-                                        type,
-                                        permitted_when_isolated_path,
-                                        parent_ns);
-    } else {
-      ALOGE("not compatible with version %d, cannot create namespace %s", NAMESPACE_VERSION, name);
-    }
-  }
-
-  return nullptr;
-}
-
-bool NativeBridgeLinkNamespaces(native_bridge_namespace_t* from, native_bridge_namespace_t* to,
-                                const char* shared_libs_sonames) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->linkNamespaces(from, to, shared_libs_sonames);
-    } else {
-      ALOGE("not compatible with version %d, cannot init namespace", NAMESPACE_VERSION);
-    }
-  }
-
-  return false;
-}
-
-native_bridge_namespace_t* NativeBridgeGetExportedNamespace(const char* name) {
-  if (!NativeBridgeInitialized()) {
-    return nullptr;
-  }
-
-  if (isCompatibleWith(RUNTIME_NAMESPACE_VERSION)) {
-    return callbacks->getExportedNamespace(name);
-  }
-
-  // sphal is vendor namespace name -> use v4 callback in the case NB callbacks
-  // are not compatible with v5
-  if (isCompatibleWith(VENDOR_NAMESPACE_VERSION) && name != nullptr && strcmp("sphal", name) == 0) {
-    return callbacks->getVendorNamespace();
-  }
-
-  return nullptr;
-}
-
-void* NativeBridgeLoadLibraryExt(const char* libpath, int flag, native_bridge_namespace_t* ns) {
-  if (NativeBridgeInitialized()) {
-    if (isCompatibleWith(NAMESPACE_VERSION)) {
-      return callbacks->loadLibraryExt(libpath, flag, ns);
-    } else {
-      ALOGE("not compatible with version %d, cannot load library in namespace", NAMESPACE_VERSION);
-    }
-  }
-  return nullptr;
-}
-
-}  // extern "C"
-
-}  // namespace android
diff --git a/libnativebridge/native_bridge_lazy.cc b/libnativebridge/native_bridge_lazy.cc
deleted file mode 100644
index 94c8084..0000000
--- a/libnativebridge/native_bridge_lazy.cc
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "nativebridge/native_bridge.h"
-#define LOG_TAG "nativebridge"
-
-#include <dlfcn.h>
-#include <errno.h>
-#include <string.h>
-
-#include <log/log.h>
-
-namespace android {
-
-namespace {
-
-void* GetLibHandle() {
-  static void* handle = dlopen("libnativebridge.so", RTLD_NOW);
-  LOG_FATAL_IF(handle == nullptr, "Failed to load libnativebridge.so: %s", dlerror());
-  return handle;
-}
-
-template <typename FuncPtr>
-FuncPtr GetFuncPtr(const char* function_name) {
-  auto f = reinterpret_cast<FuncPtr>(dlsym(GetLibHandle(), function_name));
-  LOG_FATAL_IF(f == nullptr, "Failed to get address of %s: %s", function_name, dlerror());
-  return f;
-}
-
-#define GET_FUNC_PTR(name) GetFuncPtr<decltype(&name)>(#name)
-
-}  // namespace
-
-bool LoadNativeBridge(const char* native_bridge_library_filename,
-                      const struct NativeBridgeRuntimeCallbacks* runtime_callbacks) {
-  static auto f = GET_FUNC_PTR(LoadNativeBridge);
-  return f(native_bridge_library_filename, runtime_callbacks);
-}
-
-bool NeedsNativeBridge(const char* instruction_set) {
-  static auto f = GET_FUNC_PTR(NeedsNativeBridge);
-  return f(instruction_set);
-}
-
-bool PreInitializeNativeBridge(const char* app_data_dir, const char* instruction_set) {
-  static auto f = GET_FUNC_PTR(PreInitializeNativeBridge);
-  return f(app_data_dir, instruction_set);
-}
-
-bool InitializeNativeBridge(JNIEnv* env, const char* instruction_set) {
-  static auto f = GET_FUNC_PTR(InitializeNativeBridge);
-  return f(env, instruction_set);
-}
-
-void UnloadNativeBridge() {
-  static auto f = GET_FUNC_PTR(UnloadNativeBridge);
-  return f();
-}
-
-bool NativeBridgeAvailable() {
-  static auto f = GET_FUNC_PTR(NativeBridgeAvailable);
-  return f();
-}
-
-bool NativeBridgeInitialized() {
-  static auto f = GET_FUNC_PTR(NativeBridgeInitialized);
-  return f();
-}
-
-void* NativeBridgeLoadLibrary(const char* libpath, int flag) {
-  static auto f = GET_FUNC_PTR(NativeBridgeLoadLibrary);
-  return f(libpath, flag);
-}
-
-void* NativeBridgeGetTrampoline(void* handle, const char* name, const char* shorty, uint32_t len) {
-  static auto f = GET_FUNC_PTR(NativeBridgeGetTrampoline);
-  return f(handle, name, shorty, len);
-}
-
-bool NativeBridgeIsSupported(const char* libpath) {
-  static auto f = GET_FUNC_PTR(NativeBridgeIsSupported);
-  return f(libpath);
-}
-
-uint32_t NativeBridgeGetVersion() {
-  static auto f = GET_FUNC_PTR(NativeBridgeGetVersion);
-  return f();
-}
-
-NativeBridgeSignalHandlerFn NativeBridgeGetSignalHandler(int signal) {
-  static auto f = GET_FUNC_PTR(NativeBridgeGetSignalHandler);
-  return f(signal);
-}
-
-bool NativeBridgeError() {
-  static auto f = GET_FUNC_PTR(NativeBridgeError);
-  return f();
-}
-
-bool NativeBridgeNameAcceptable(const char* native_bridge_library_filename) {
-  static auto f = GET_FUNC_PTR(NativeBridgeNameAcceptable);
-  return f(native_bridge_library_filename);
-}
-
-int NativeBridgeUnloadLibrary(void* handle) {
-  static auto f = GET_FUNC_PTR(NativeBridgeUnloadLibrary);
-  return f(handle);
-}
-
-const char* NativeBridgeGetError() {
-  static auto f = GET_FUNC_PTR(NativeBridgeGetError);
-  return f();
-}
-
-bool NativeBridgeIsPathSupported(const char* path) {
-  static auto f = GET_FUNC_PTR(NativeBridgeIsPathSupported);
-  return f(path);
-}
-
-bool NativeBridgeInitAnonymousNamespace(const char* public_ns_sonames,
-                                        const char* anon_ns_library_path) {
-  static auto f = GET_FUNC_PTR(NativeBridgeInitAnonymousNamespace);
-  return f(public_ns_sonames, anon_ns_library_path);
-}
-
-struct native_bridge_namespace_t* NativeBridgeCreateNamespace(
-    const char* name, const char* ld_library_path, const char* default_library_path, uint64_t type,
-    const char* permitted_when_isolated_path, struct native_bridge_namespace_t* parent_ns) {
-  static auto f = GET_FUNC_PTR(NativeBridgeCreateNamespace);
-  return f(name, ld_library_path, default_library_path, type, permitted_when_isolated_path,
-           parent_ns);
-}
-
-bool NativeBridgeLinkNamespaces(struct native_bridge_namespace_t* from,
-                                struct native_bridge_namespace_t* to,
-                                const char* shared_libs_sonames) {
-  static auto f = GET_FUNC_PTR(NativeBridgeLinkNamespaces);
-  return f(from, to, shared_libs_sonames);
-}
-
-void* NativeBridgeLoadLibraryExt(const char* libpath, int flag,
-                                 struct native_bridge_namespace_t* ns) {
-  static auto f = GET_FUNC_PTR(NativeBridgeLoadLibraryExt);
-  return f(libpath, flag, ns);
-}
-
-struct native_bridge_namespace_t* NativeBridgeGetVendorNamespace() {
-  static auto f = GET_FUNC_PTR(NativeBridgeGetVendorNamespace);
-  return f();
-}
-
-#undef GET_FUNC_PTR
-
-}  // namespace android
diff --git a/libnativebridge/tests/Android.bp b/libnativebridge/tests/Android.bp
deleted file mode 100644
index 2bb8467..0000000
--- a/libnativebridge/tests/Android.bp
+++ /dev/null
@@ -1,110 +0,0 @@
-//
-// Copyright (C) 2017 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_defaults {
-    name: "libnativebridge-dummy-defaults",
-
-    host_supported: true,
-    cflags: [
-        "-Wall",
-        "-Wextra",
-        "-Werror",
-    ],
-    header_libs: ["libnativebridge-headers"],
-    cppflags: ["-fvisibility=protected"],
-}
-
-cc_library_shared {
-    name: "libnativebridge-dummy",
-    srcs: ["DummyNativeBridge.cpp"],
-    defaults: ["libnativebridge-dummy-defaults"],
-}
-
-cc_library_shared {
-    name: "libnativebridge2-dummy",
-    srcs: ["DummyNativeBridge2.cpp"],
-    defaults: ["libnativebridge-dummy-defaults"],
-}
-
-cc_library_shared {
-    name: "libnativebridge3-dummy",
-    srcs: ["DummyNativeBridge3.cpp"],
-    defaults: ["libnativebridge-dummy-defaults"],
-}
-
-// Build the unit tests.
-cc_defaults {
-    name: "libnativebridge-tests-defaults",
-    test_per_src: true,
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    srcs: [
-        "CodeCacheCreate_test.cpp",
-        "CodeCacheExists_test.cpp",
-        "CodeCacheStatFail_test.cpp",
-        "CompleteFlow_test.cpp",
-        "InvalidCharsNativeBridge_test.cpp",
-        "NativeBridge2Signal_test.cpp",
-        "NativeBridgeVersion_test.cpp",
-        "NeedsNativeBridge_test.cpp",
-        "PreInitializeNativeBridge_test.cpp",
-        "PreInitializeNativeBridgeFail1_test.cpp",
-        "PreInitializeNativeBridgeFail2_test.cpp",
-        "ReSetupNativeBridge_test.cpp",
-        "UnavailableNativeBridge_test.cpp",
-        "ValidNameNativeBridge_test.cpp",
-        "NativeBridge3UnloadLibrary_test.cpp",
-        "NativeBridge3GetError_test.cpp",
-        "NativeBridge3IsPathSupported_test.cpp",
-        "NativeBridge3InitAnonymousNamespace_test.cpp",
-        "NativeBridge3CreateNamespace_test.cpp",
-        "NativeBridge3LoadLibraryExt_test.cpp",
-    ],
-
-    shared_libs: [
-        "liblog",
-        "libnativebridge-dummy",
-    ],
-    header_libs: ["libbase_headers"],
-}
-
-cc_test {
-    name: "libnativebridge-tests",
-    defaults: ["libnativebridge-tests-defaults"],
-    host_supported: true,
-    shared_libs: ["libnativebridge"],
-}
-
-cc_test {
-    name: "libnativebridge-lazy-tests",
-    defaults: ["libnativebridge-tests-defaults"],
-    shared_libs: ["libnativebridge_lazy"],
-}
-
-// Build the test for the C API.
-cc_test {
-    name: "libnativebridge-api-tests",
-    host_supported: true,
-    test_per_src: true,
-    srcs: [
-        "NativeBridgeApi.c",
-    ],
-    header_libs: ["libnativebridge-headers"],
-}
diff --git a/libnativebridge/tests/CodeCacheCreate_test.cpp b/libnativebridge/tests/CodeCacheCreate_test.cpp
deleted file mode 100644
index 58270c4..0000000
--- a/libnativebridge/tests/CodeCacheCreate_test.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <errno.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-namespace android {
-
-// Tests that the bridge initialization creates the code_cache if it doesn't
-// exists.
-TEST_F(NativeBridgeTest, CodeCacheCreate) {
-    // Make sure that code_cache does not exists
-    struct stat st;
-    ASSERT_EQ(-1, stat(kCodeCache, &st));
-    ASSERT_EQ(ENOENT, errno);
-
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_FALSE(NativeBridgeError());
-
-    // Check that code_cache was created
-    ASSERT_EQ(0, stat(kCodeCache, &st));
-    ASSERT_TRUE(S_ISDIR(st.st_mode));
-
-    // Clean up
-    UnloadNativeBridge();
-    ASSERT_EQ(0, rmdir(kCodeCache));
-
-    ASSERT_FALSE(NativeBridgeError());
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/CodeCacheExists_test.cpp b/libnativebridge/tests/CodeCacheExists_test.cpp
deleted file mode 100644
index 8ba0158..0000000
--- a/libnativebridge/tests/CodeCacheExists_test.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <errno.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-namespace android {
-
-// Tests that the bridge is initialized without errors if the code_cache already
-// exists.
-TEST_F(NativeBridgeTest, CodeCacheExists) {
-    // Make sure that code_cache does not exists
-    struct stat st;
-    ASSERT_EQ(-1, stat(kCodeCache, &st));
-    ASSERT_EQ(ENOENT, errno);
-
-    // Create the code_cache
-    ASSERT_EQ(0, mkdir(kCodeCache, S_IRWXU | S_IRWXG | S_IXOTH));
-
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_FALSE(NativeBridgeError());
-
-    // Check that the code cache is still there
-    ASSERT_EQ(0, stat(kCodeCache, &st));
-    ASSERT_TRUE(S_ISDIR(st.st_mode));
-
-    // Clean up
-    UnloadNativeBridge();
-    ASSERT_EQ(0, rmdir(kCodeCache));
-
-    ASSERT_FALSE(NativeBridgeError());
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/CodeCacheStatFail_test.cpp b/libnativebridge/tests/CodeCacheStatFail_test.cpp
deleted file mode 100644
index 4ea519e..0000000
--- a/libnativebridge/tests/CodeCacheStatFail_test.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <errno.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-namespace android {
-
-// Tests that the bridge is initialized without errors if the code_cache is
-// existed as a file.
-TEST_F(NativeBridgeTest, CodeCacheStatFail) {
-    int fd = creat(kCodeCache, O_RDWR);
-    ASSERT_NE(-1, fd);
-    close(fd);
-
-    struct stat st;
-    ASSERT_EQ(-1, stat(kCodeCacheStatFail, &st));
-    ASSERT_EQ(ENOTDIR, errno);
-
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-    ASSERT_TRUE(PreInitializeNativeBridge(kCodeCacheStatFail, "isa"));
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_FALSE(NativeBridgeError());
-
-    // Clean up
-    UnloadNativeBridge();
-
-    ASSERT_FALSE(NativeBridgeError());
-    unlink(kCodeCache);
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/CompleteFlow_test.cpp b/libnativebridge/tests/CompleteFlow_test.cpp
deleted file mode 100644
index b033792..0000000
--- a/libnativebridge/tests/CompleteFlow_test.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <unistd.h>
-
-namespace android {
-
-TEST_F(NativeBridgeTest, CompleteFlow) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    // Basic calls to check that nothing crashes
-    ASSERT_FALSE(NativeBridgeIsSupported(nullptr));
-    ASSERT_EQ(nullptr, NativeBridgeLoadLibrary(nullptr, 0));
-    ASSERT_EQ(nullptr, NativeBridgeGetTrampoline(nullptr, nullptr, nullptr, 0));
-
-    // Unload
-    UnloadNativeBridge();
-
-    ASSERT_FALSE(NativeBridgeAvailable());
-    ASSERT_FALSE(NativeBridgeError());
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/DummyNativeBridge.cpp b/libnativebridge/tests/DummyNativeBridge.cpp
deleted file mode 100644
index b9894f6..0000000
--- a/libnativebridge/tests/DummyNativeBridge.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// A dummy implementation of the native-bridge interface.
-
-#include "nativebridge/native_bridge.h"
-
-// NativeBridgeCallbacks implementations
-extern "C" bool native_bridge_initialize(const android::NativeBridgeRuntimeCallbacks* /* art_cbs */,
-                                         const char* /* app_code_cache_dir */,
-                                         const char* /* isa */) {
-  return true;
-}
-
-extern "C" void* native_bridge_loadLibrary(const char* /* libpath */, int /* flag */) {
-  return nullptr;
-}
-
-extern "C" void* native_bridge_getTrampoline(void* /* handle */, const char* /* name */,
-                                             const char* /* shorty */, uint32_t /* len */) {
-  return nullptr;
-}
-
-extern "C" bool native_bridge_isSupported(const char* /* libpath */) {
-  return false;
-}
-
-extern "C" const struct android::NativeBridgeRuntimeValues* native_bridge_getAppEnv(
-    const char* /* abi */) {
-  return nullptr;
-}
-
-android::NativeBridgeCallbacks NativeBridgeItf {
-  .version = 1,
-  .initialize = &native_bridge_initialize,
-  .loadLibrary = &native_bridge_loadLibrary,
-  .getTrampoline = &native_bridge_getTrampoline,
-  .isSupported = &native_bridge_isSupported,
-  .getAppEnv = &native_bridge_getAppEnv
-};
diff --git a/libnativebridge/tests/DummyNativeBridge2.cpp b/libnativebridge/tests/DummyNativeBridge2.cpp
deleted file mode 100644
index 6920c74..0000000
--- a/libnativebridge/tests/DummyNativeBridge2.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// A dummy implementation of the native-bridge interface.
-
-#include "nativebridge/native_bridge.h"
-
-#include <signal.h>
-
-// NativeBridgeCallbacks implementations
-extern "C" bool native_bridge2_initialize(const android::NativeBridgeRuntimeCallbacks* /* art_cbs */,
-                                         const char* /* app_code_cache_dir */,
-                                         const char* /* isa */) {
-  return true;
-}
-
-extern "C" void* native_bridge2_loadLibrary(const char* /* libpath */, int /* flag */) {
-  return nullptr;
-}
-
-extern "C" void* native_bridge2_getTrampoline(void* /* handle */, const char* /* name */,
-                                             const char* /* shorty */, uint32_t /* len */) {
-  return nullptr;
-}
-
-extern "C" bool native_bridge2_isSupported(const char* /* libpath */) {
-  return false;
-}
-
-extern "C" const struct android::NativeBridgeRuntimeValues* native_bridge2_getAppEnv(
-    const char* /* abi */) {
-  return nullptr;
-}
-
-extern "C" bool native_bridge2_is_compatible_compatible_with(uint32_t version) {
-  // For testing, allow 1 and 2, but disallow 3+.
-  return version <= 2;
-}
-
-static bool native_bridge2_dummy_signal_handler(int, siginfo_t*, void*) {
-  // TODO: Implement something here. We'd either have to have a death test with a log here, or
-  //       we'd have to be able to resume after the faulting instruction...
-  return true;
-}
-
-extern "C" android::NativeBridgeSignalHandlerFn native_bridge2_get_signal_handler(int signal) {
-  if (signal == SIGSEGV) {
-    return &native_bridge2_dummy_signal_handler;
-  }
-  return nullptr;
-}
-
-android::NativeBridgeCallbacks NativeBridgeItf {
-  .version = 2,
-  .initialize = &native_bridge2_initialize,
-  .loadLibrary = &native_bridge2_loadLibrary,
-  .getTrampoline = &native_bridge2_getTrampoline,
-  .isSupported = &native_bridge2_isSupported,
-  .getAppEnv = &native_bridge2_getAppEnv,
-  .isCompatibleWith = &native_bridge2_is_compatible_compatible_with,
-  .getSignalHandler = &native_bridge2_get_signal_handler
-};
-
diff --git a/libnativebridge/tests/DummyNativeBridge3.cpp b/libnativebridge/tests/DummyNativeBridge3.cpp
deleted file mode 100644
index 4ef1c82..0000000
--- a/libnativebridge/tests/DummyNativeBridge3.cpp
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// A dummy implementation of the native-bridge interface.
-
-#include "nativebridge/native_bridge.h"
-
-#include <signal.h>
-
-// NativeBridgeCallbacks implementations
-extern "C" bool native_bridge3_initialize(
-                      const android::NativeBridgeRuntimeCallbacks* /* art_cbs */,
-                      const char* /* app_code_cache_dir */,
-                      const char* /* isa */) {
-  return true;
-}
-
-extern "C" void* native_bridge3_loadLibrary(const char* /* libpath */, int /* flag */) {
-  return nullptr;
-}
-
-extern "C" void* native_bridge3_getTrampoline(void* /* handle */, const char* /* name */,
-                                             const char* /* shorty */, uint32_t /* len */) {
-  return nullptr;
-}
-
-extern "C" bool native_bridge3_isSupported(const char* /* libpath */) {
-  return false;
-}
-
-extern "C" const struct android::NativeBridgeRuntimeValues* native_bridge3_getAppEnv(
-    const char* /* abi */) {
-  return nullptr;
-}
-
-extern "C" bool native_bridge3_isCompatibleWith(uint32_t version) {
-  // For testing, allow 1-3, but disallow 4+.
-  return version <= 3;
-}
-
-static bool native_bridge3_dummy_signal_handler(int, siginfo_t*, void*) {
-  // TODO: Implement something here. We'd either have to have a death test with a log here, or
-  //       we'd have to be able to resume after the faulting instruction...
-  return true;
-}
-
-extern "C" android::NativeBridgeSignalHandlerFn native_bridge3_getSignalHandler(int signal) {
-  if (signal == SIGSEGV) {
-    return &native_bridge3_dummy_signal_handler;
-  }
-  return nullptr;
-}
-
-extern "C" int native_bridge3_unloadLibrary(void* /* handle */) {
-  return 0;
-}
-
-extern "C" const char* native_bridge3_getError() {
-  return nullptr;
-}
-
-extern "C" bool native_bridge3_isPathSupported(const char* /* path */) {
-  return true;
-}
-
-extern "C" bool native_bridge3_initAnonymousNamespace(const char* /* public_ns_sonames */,
-                                                      const char* /* anon_ns_library_path */) {
-  return true;
-}
-
-extern "C" android::native_bridge_namespace_t*
-native_bridge3_createNamespace(const char* /* name */,
-                               const char* /* ld_library_path */,
-                               const char* /* default_library_path */,
-                               uint64_t /* type */,
-                               const char* /* permitted_when_isolated_path */,
-                               android::native_bridge_namespace_t* /* parent_ns */) {
-  return nullptr;
-}
-
-extern "C" bool native_bridge3_linkNamespaces(android::native_bridge_namespace_t* /* from */,
-                                              android::native_bridge_namespace_t* /* to */,
-                                              const char* /* shared_libs_soname */) {
-  return true;
-}
-
-extern "C" void* native_bridge3_loadLibraryExt(const char* /* libpath */,
-                                               int /* flag */,
-                                               android::native_bridge_namespace_t* /* ns */) {
-  return nullptr;
-}
-
-android::NativeBridgeCallbacks NativeBridgeItf{
-    // v1
-    .version = 3,
-    .initialize = &native_bridge3_initialize,
-    .loadLibrary = &native_bridge3_loadLibrary,
-    .getTrampoline = &native_bridge3_getTrampoline,
-    .isSupported = &native_bridge3_isSupported,
-    .getAppEnv = &native_bridge3_getAppEnv,
-    // v2
-    .isCompatibleWith = &native_bridge3_isCompatibleWith,
-    .getSignalHandler = &native_bridge3_getSignalHandler,
-    // v3
-    .unloadLibrary = &native_bridge3_unloadLibrary,
-    .getError = &native_bridge3_getError,
-    .isPathSupported = &native_bridge3_isPathSupported,
-    .initAnonymousNamespace = &native_bridge3_initAnonymousNamespace,
-    .createNamespace = &native_bridge3_createNamespace,
-    .linkNamespaces = &native_bridge3_linkNamespaces,
-    .loadLibraryExt = &native_bridge3_loadLibraryExt};
diff --git a/libnativebridge/tests/InvalidCharsNativeBridge_test.cpp b/libnativebridge/tests/InvalidCharsNativeBridge_test.cpp
deleted file mode 100644
index 8f7973d..0000000
--- a/libnativebridge/tests/InvalidCharsNativeBridge_test.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-static const char* kTestName = "../librandom$@-bridge_not.existing.so";
-
-TEST_F(NativeBridgeTest, InvalidChars) {
-    // Do one test actually calling setup.
-    EXPECT_EQ(false, NativeBridgeError());
-    LoadNativeBridge(kTestName, nullptr);
-    // This should lead to an error for invalid characters.
-    EXPECT_EQ(true, NativeBridgeError());
-
-    // Further tests need to use NativeBridgeNameAcceptable, as the error
-    // state can't be changed back.
-    EXPECT_EQ(false, NativeBridgeNameAcceptable("."));
-    EXPECT_EQ(false, NativeBridgeNameAcceptable(".."));
-    EXPECT_EQ(false, NativeBridgeNameAcceptable("_"));
-    EXPECT_EQ(false, NativeBridgeNameAcceptable("-"));
-    EXPECT_EQ(false, NativeBridgeNameAcceptable("lib@.so"));
-    EXPECT_EQ(false, NativeBridgeNameAcceptable("lib$.so"));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge2Signal_test.cpp b/libnativebridge/tests/NativeBridge2Signal_test.cpp
deleted file mode 100644
index 44e45e3..0000000
--- a/libnativebridge/tests/NativeBridge2Signal_test.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <signal.h>
-#include <unistd.h>
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary2 = "libnativebridge2-dummy.so";
-
-TEST_F(NativeBridgeTest, V2_Signal) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary2, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    ASSERT_EQ(2U, NativeBridgeGetVersion());
-    ASSERT_NE(nullptr, NativeBridgeGetSignalHandler(SIGSEGV));
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge3CreateNamespace_test.cpp b/libnativebridge/tests/NativeBridge3CreateNamespace_test.cpp
deleted file mode 100644
index 668d942..0000000
--- a/libnativebridge/tests/NativeBridge3CreateNamespace_test.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-TEST_F(NativeBridgeTest, V3_CreateNamespace) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary3, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    ASSERT_EQ(3U, NativeBridgeGetVersion());
-    ASSERT_EQ(nullptr, NativeBridgeCreateNamespace(nullptr, nullptr, nullptr,
-                                                   0, nullptr, nullptr));
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge3GetError_test.cpp b/libnativebridge/tests/NativeBridge3GetError_test.cpp
deleted file mode 100644
index 0b9f582..0000000
--- a/libnativebridge/tests/NativeBridge3GetError_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-TEST_F(NativeBridgeTest, V3_GetError) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary3, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    ASSERT_EQ(3U, NativeBridgeGetVersion());
-    ASSERT_EQ(nullptr, NativeBridgeGetError());
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge3InitAnonymousNamespace_test.cpp b/libnativebridge/tests/NativeBridge3InitAnonymousNamespace_test.cpp
deleted file mode 100644
index b0d6b09..0000000
--- a/libnativebridge/tests/NativeBridge3InitAnonymousNamespace_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-TEST_F(NativeBridgeTest, V3_InitAnonymousNamespace) {
-  // Init
-  ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary3, nullptr));
-  ASSERT_TRUE(NativeBridgeAvailable());
-  ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-  ASSERT_TRUE(NativeBridgeAvailable());
-  ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-  ASSERT_TRUE(NativeBridgeAvailable());
-
-  ASSERT_EQ(3U, NativeBridgeGetVersion());
-  ASSERT_EQ(true, NativeBridgeInitAnonymousNamespace(nullptr, nullptr));
-
-  // Clean-up code_cache
-  ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge3IsPathSupported_test.cpp b/libnativebridge/tests/NativeBridge3IsPathSupported_test.cpp
deleted file mode 100644
index 325e40b..0000000
--- a/libnativebridge/tests/NativeBridge3IsPathSupported_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-TEST_F(NativeBridgeTest, V3_IsPathSupported) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary3, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    ASSERT_EQ(3U, NativeBridgeGetVersion());
-    ASSERT_EQ(true, NativeBridgeIsPathSupported(nullptr));
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge3LoadLibraryExt_test.cpp b/libnativebridge/tests/NativeBridge3LoadLibraryExt_test.cpp
deleted file mode 100644
index 4caeb44..0000000
--- a/libnativebridge/tests/NativeBridge3LoadLibraryExt_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-TEST_F(NativeBridgeTest, V3_LoadLibraryExt) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary3, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    ASSERT_EQ(3U, NativeBridgeGetVersion());
-    ASSERT_EQ(nullptr, NativeBridgeLoadLibraryExt(nullptr, 0, nullptr));
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridge3UnloadLibrary_test.cpp b/libnativebridge/tests/NativeBridge3UnloadLibrary_test.cpp
deleted file mode 100644
index 93a979c..0000000
--- a/libnativebridge/tests/NativeBridge3UnloadLibrary_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-TEST_F(NativeBridgeTest, V3_UnloadLibrary) {
-    // Init
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary3, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(PreInitializeNativeBridge(".", "isa"));
-    ASSERT_TRUE(NativeBridgeAvailable());
-    ASSERT_TRUE(InitializeNativeBridge(nullptr, nullptr));
-    ASSERT_TRUE(NativeBridgeAvailable());
-
-    ASSERT_EQ(3U, NativeBridgeGetVersion());
-    ASSERT_EQ(0, NativeBridgeUnloadLibrary(nullptr));
-
-    // Clean-up code_cache
-    ASSERT_EQ(0, rmdir(kCodeCache));
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NativeBridgeApi.c b/libnativebridge/tests/NativeBridgeApi.c
deleted file mode 100644
index 7ab71fe..0000000
--- a/libnativebridge/tests/NativeBridgeApi.c
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* The main purpose of this test is to ensure this C header compiles in C, so
- * that no C++ features inadvertently leak into the C ABI. */
-#include "nativebridge/native_bridge.h"
-
-int main(int argc, char** argv) {
-  (void)argc;
-  (void)argv;
-  return 0;
-}
diff --git a/libnativebridge/tests/NativeBridgeTest.h b/libnativebridge/tests/NativeBridgeTest.h
deleted file mode 100644
index 0f99816..0000000
--- a/libnativebridge/tests/NativeBridgeTest.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef NATIVE_BRIDGE_TEST_H_
-#define NATIVE_BRIDGE_TEST_H_
-
-#define LOG_TAG "NativeBridge_test"
-
-#include <nativebridge/native_bridge.h>
-#include <gtest/gtest.h>
-
-constexpr const char* kNativeBridgeLibrary = "libnativebridge-dummy.so";
-constexpr const char* kCodeCache = "./code_cache";
-constexpr const char* kCodeCacheStatFail = "./code_cache/temp";
-constexpr const char* kNativeBridgeLibrary2 = "libnativebridge2-dummy.so";
-constexpr const char* kNativeBridgeLibrary3 = "libnativebridge3-dummy.so";
-
-namespace android {
-
-class NativeBridgeTest : public testing::Test {
-};
-
-};  // namespace android
-
-#endif  // NATIVE_BRIDGE_H_
-
diff --git a/libnativebridge/tests/NativeBridgeVersion_test.cpp b/libnativebridge/tests/NativeBridgeVersion_test.cpp
deleted file mode 100644
index d3f9a80..0000000
--- a/libnativebridge/tests/NativeBridgeVersion_test.cpp
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <unistd.h>
-
-namespace android {
-
-TEST_F(NativeBridgeTest, Version) {
-    // When a bridge isn't loaded, we expect 0.
-    EXPECT_EQ(NativeBridgeGetVersion(), 0U);
-
-    // After our dummy bridge has been loaded, we expect 1.
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-    EXPECT_EQ(NativeBridgeGetVersion(), 1U);
-
-    // Unload
-    UnloadNativeBridge();
-
-    // Version information is gone.
-    EXPECT_EQ(NativeBridgeGetVersion(), 0U);
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/NeedsNativeBridge_test.cpp b/libnativebridge/tests/NeedsNativeBridge_test.cpp
deleted file mode 100644
index c8ff743..0000000
--- a/libnativebridge/tests/NeedsNativeBridge_test.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <android-base/macros.h>
-
-namespace android {
-
-static const char* kISAs[] = { "arm", "arm64", "mips", "mips64", "x86", "x86_64", "random", "64arm",
-                               "64_x86", "64_x86_64", "", "reallylongstringabcd", nullptr };
-
-TEST_F(NativeBridgeTest, NeedsNativeBridge) {
-  EXPECT_EQ(false, NeedsNativeBridge(ABI_STRING));
-
-  const size_t kISACount = sizeof(kISAs) / sizeof(kISAs[0]);
-  for (size_t i = 0; i < kISACount; i++) {
-    EXPECT_EQ(kISAs[i] == nullptr ? false : strcmp(kISAs[i], ABI_STRING) != 0,
-              NeedsNativeBridge(kISAs[i]));
-    }
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/PreInitializeNativeBridgeFail1_test.cpp b/libnativebridge/tests/PreInitializeNativeBridgeFail1_test.cpp
deleted file mode 100644
index 5a2b0a1..0000000
--- a/libnativebridge/tests/PreInitializeNativeBridgeFail1_test.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-#include <dlfcn.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-
-#include <cstdio>
-#include <cstring>
-
-#include <android/log.h>
-
-namespace android {
-
-TEST_F(NativeBridgeTest, PreInitializeNativeBridgeFail1) {
-  // Needs a valid application directory.
-  ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-  ASSERT_FALSE(PreInitializeNativeBridge(nullptr, "isa"));
-  ASSERT_TRUE(NativeBridgeError());
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/PreInitializeNativeBridgeFail2_test.cpp b/libnativebridge/tests/PreInitializeNativeBridgeFail2_test.cpp
deleted file mode 100644
index af976b1..0000000
--- a/libnativebridge/tests/PreInitializeNativeBridgeFail2_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dlfcn.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-
-#include <cstdio>
-#include <cstring>
-
-#include <android/log.h>
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-TEST_F(NativeBridgeTest, PreInitializeNativeBridgeFail2) {
-  // Needs LoadNativeBridge() first
-  ASSERT_FALSE(PreInitializeNativeBridge(nullptr, "isa"));
-  ASSERT_TRUE(NativeBridgeError());
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/PreInitializeNativeBridge_test.cpp b/libnativebridge/tests/PreInitializeNativeBridge_test.cpp
deleted file mode 100644
index cd5a8e2..0000000
--- a/libnativebridge/tests/PreInitializeNativeBridge_test.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dlfcn.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-
-#include <cstdio>
-#include <cstring>
-
-#include <android/log.h>
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-TEST_F(NativeBridgeTest, PreInitializeNativeBridge) {
-    ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-#if !defined(__APPLE__)         // Mac OS does not support bind-mount.
-#if !defined(__ANDROID__)       // Cannot write into the hard-wired location.
-    static constexpr const char* kTestData = "PreInitializeNativeBridge test.";
-
-    // Try to create our mount namespace.
-    if (unshare(CLONE_NEWNS) != -1) {
-        // Create a dummy file.
-        FILE* cpuinfo = fopen("./cpuinfo", "w");
-        ASSERT_NE(nullptr, cpuinfo) << strerror(errno);
-        fprintf(cpuinfo, kTestData);
-        fclose(cpuinfo);
-
-        ASSERT_TRUE(PreInitializeNativeBridge("does not matter 1", "short 2"));
-
-        // Read /proc/cpuinfo
-        FILE* proc_cpuinfo = fopen("/proc/cpuinfo", "r");
-        ASSERT_NE(nullptr, proc_cpuinfo) << strerror(errno);
-        char buf[1024];
-        EXPECT_NE(nullptr, fgets(buf, sizeof(buf), proc_cpuinfo)) << "Error reading.";
-        fclose(proc_cpuinfo);
-
-        EXPECT_EQ(0, strcmp(buf, kTestData));
-
-        // Delete the file.
-        ASSERT_EQ(0, unlink("./cpuinfo")) << "Error unlinking temporary file.";
-        // Ending the test will tear down the mount namespace.
-    } else {
-        GTEST_LOG_(WARNING) << "Could not create mount namespace. Are you running this as root?";
-    }
-#endif
-#endif
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/ReSetupNativeBridge_test.cpp b/libnativebridge/tests/ReSetupNativeBridge_test.cpp
deleted file mode 100644
index 944e5d7..0000000
--- a/libnativebridge/tests/ReSetupNativeBridge_test.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-TEST_F(NativeBridgeTest, ReSetup) {
-    EXPECT_EQ(false, NativeBridgeError());
-    LoadNativeBridge("", nullptr);
-    EXPECT_EQ(false, NativeBridgeError());
-    LoadNativeBridge("", nullptr);
-    // This should lead to an error for trying to re-setup a native bridge.
-    EXPECT_EQ(true, NativeBridgeError());
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/UnavailableNativeBridge_test.cpp b/libnativebridge/tests/UnavailableNativeBridge_test.cpp
deleted file mode 100644
index ad374a5..0000000
--- a/libnativebridge/tests/UnavailableNativeBridge_test.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "NativeBridgeTest.h"
-
-namespace android {
-
-TEST_F(NativeBridgeTest, NoNativeBridge) {
-    EXPECT_EQ(false, NativeBridgeAvailable());
-    // Try to initialize. This should fail as we are not set up.
-    EXPECT_EQ(false, InitializeNativeBridge(nullptr, nullptr));
-    EXPECT_EQ(true, NativeBridgeError());
-    EXPECT_EQ(false, NativeBridgeAvailable());
-}
-
-}  // namespace android
diff --git a/libnativebridge/tests/ValidNameNativeBridge_test.cpp b/libnativebridge/tests/ValidNameNativeBridge_test.cpp
deleted file mode 100644
index 690be4a..0000000
--- a/libnativebridge/tests/ValidNameNativeBridge_test.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <NativeBridgeTest.h>
-
-namespace android {
-
-static const char* kTestName = "librandom-bridge_not.existing.so";
-
-TEST_F(NativeBridgeTest, ValidName) {
-    // Check that the name is acceptable.
-    EXPECT_EQ(true, NativeBridgeNameAcceptable(kTestName));
-
-    // Now check what happens on LoadNativeBridge.
-    EXPECT_EQ(false, NativeBridgeError());
-    LoadNativeBridge(kTestName, nullptr);
-    // This will lead to an error as the library doesn't exist.
-    EXPECT_EQ(true, NativeBridgeError());
-    EXPECT_EQ(false, NativeBridgeAvailable());
-}
-
-}  // namespace android
diff --git a/libnativeloader/Android.bp b/libnativeloader/Android.bp
deleted file mode 100644
index 66cb49f..0000000
--- a/libnativeloader/Android.bp
+++ /dev/null
@@ -1,65 +0,0 @@
-// Shared library for target
-// ========================================================
-cc_defaults {
-    name: "libnativeloader-defaults",
-    cflags: [
-        "-Werror",
-        "-Wall",
-    ],
-    cppflags: [
-        "-fvisibility=hidden",
-    ],
-    header_libs: ["libnativeloader-headers"],
-    export_header_lib_headers: ["libnativeloader-headers"],
-}
-
-cc_library {
-    name: "libnativeloader",
-    defaults: ["libnativeloader-defaults"],
-    host_supported: true,
-    srcs: ["native_loader.cpp"],
-    shared_libs: [
-        "libnativehelper",
-        "liblog",
-        "libnativebridge",
-        "libbase",
-    ],
-    target: {
-        android: {
-            shared_libs: [
-                "libdl_android",
-            ],
-        },
-    },
-    required: [
-        "llndk.libraries.txt",
-        "vndksp.libraries.txt",
-    ],
-    stubs: {
-        symbol_file: "libnativeloader.map.txt",
-        versions: ["1"],
-    },
-}
-
-// TODO(b/124250621) eliminate the need for this library
-cc_library {
-    name: "libnativeloader_lazy",
-    defaults: ["libnativeloader-defaults"],
-    host_supported: false,
-    srcs: ["native_loader_lazy.cpp"],
-    required: ["libnativeloader"],
-}
-
-cc_library_headers {
-    name: "libnativeloader-headers",
-    host_supported: true,
-    export_include_dirs: ["include"],
-}
-
-// TODO(jiyong) Remove this when its use in the internal master is
-// switched to libnativeloader-headers
-cc_library_headers {
-    name: "libnativeloader-dummy-headers",
-    host_supported: true,
-    export_include_dirs: ["include"],
-}
diff --git a/libnativeloader/OWNERS b/libnativeloader/OWNERS
deleted file mode 100644
index f735653..0000000
--- a/libnativeloader/OWNERS
+++ /dev/null
@@ -1,6 +0,0 @@
-dimitry@google.com
-jiyong@google.com
-ngeoffray@google.com
-oth@google.com
-mast@google.com
-rpl@google.com
diff --git a/libnativeloader/include/nativeloader/dlext_namespaces.h b/libnativeloader/include/nativeloader/dlext_namespaces.h
deleted file mode 100644
index 2d6ce85..0000000
--- a/libnativeloader/include/nativeloader/dlext_namespaces.h
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __ANDROID_DLEXT_NAMESPACES_H__
-#define __ANDROID_DLEXT_NAMESPACES_H__
-
-#include <android/dlext.h>
-#include <stdbool.h>
-
-__BEGIN_DECLS
-
-/*
- * Initializes anonymous namespaces. The shared_libs_sonames is the list of sonames
- * to be shared by default namespace separated by colon. Example: "libc.so:libm.so:libdl.so".
- *
- * The library_search_path is the search path for anonymous namespace. The anonymous namespace
- * is used in the case when linker cannot identify the caller of dlopen/dlsym. This happens
- * for the code not loaded by dynamic linker; for example calls from the mono-compiled code.
- */
-extern bool android_init_anonymous_namespace(const char* shared_libs_sonames,
-                                             const char* library_search_path);
-
-
-enum {
-  /* A regular namespace is the namespace with a custom search path that does
-   * not impose any restrictions on the location of native libraries.
-   */
-  ANDROID_NAMESPACE_TYPE_REGULAR = 0,
-
-  /* An isolated namespace requires all the libraries to be on the search path
-   * or under permitted_when_isolated_path. The search path is the union of
-   * ld_library_path and default_library_path.
-   */
-  ANDROID_NAMESPACE_TYPE_ISOLATED = 1,
-
-  /* The shared namespace clones the list of libraries of the caller namespace upon creation
-   * which means that they are shared between namespaces - the caller namespace and the new one
-   * will use the same copy of a library if it was loaded prior to android_create_namespace call.
-   *
-   * Note that libraries loaded after the namespace is created will not be shared.
-   *
-   * Shared namespaces can be isolated or regular. Note that they do not inherit the search path nor
-   * permitted_path from the caller's namespace.
-   */
-  ANDROID_NAMESPACE_TYPE_SHARED = 2,
-
-  /* This flag instructs linker to enable grey-list workaround for the namespace.
-   * See http://b/26394120 for details.
-   */
-  ANDROID_NAMESPACE_TYPE_GREYLIST_ENABLED = 0x08000000,
-
-  ANDROID_NAMESPACE_TYPE_SHARED_ISOLATED = ANDROID_NAMESPACE_TYPE_SHARED |
-                                           ANDROID_NAMESPACE_TYPE_ISOLATED,
-};
-
-/*
- * Creates new linker namespace.
- * ld_library_path and default_library_path represent the search path
- * for the libraries in the namespace.
- *
- * The libraries in the namespace are searched by folowing order:
- * 1. ld_library_path (Think of this as namespace-local LD_LIBRARY_PATH)
- * 2. In directories specified by DT_RUNPATH of the "needed by" binary.
- * 3. deault_library_path (This of this as namespace-local default library path)
- *
- * When type is ANDROID_NAMESPACE_TYPE_ISOLATED the resulting namespace requires all of
- * the libraries to be on the search path or under the permitted_when_isolated_path;
- * the search_path is ld_library_path:default_library_path. Note that the
- * permitted_when_isolated_path path is not part of the search_path and
- * does not affect the search order. It is a way to allow loading libraries from specific
- * locations when using absolute path.
- * If a library or any of its dependencies are outside of the permitted_when_isolated_path
- * and search_path, and it is not part of the public namespace dlopen will fail.
- */
-extern struct android_namespace_t* android_create_namespace(
-    const char* name, const char* ld_library_path, const char* default_library_path, uint64_t type,
-    const char* permitted_when_isolated_path, struct android_namespace_t* parent);
-
-/*
- * Creates a link between namespaces. Every link has list of sonames of
- * shared libraries. These are the libraries which are accessible from
- * namespace 'from' but loaded within namespace 'to' context.
- * When to namespace is nullptr this function establishes a link between
- * 'from' namespace and the default namespace.
- *
- * The lookup order of the libraries in namespaces with links is following:
- * 1. Look inside current namespace using 'this' namespace search path.
- * 2. Look in linked namespaces
- * 2.1. Perform soname check - if library soname is not in the list of shared
- *      libraries sonames skip this link, otherwise
- * 2.2. Search library using linked namespace search path. Note that this
- *      step will not go deeper into linked namespaces for this library but
- *      will do so for DT_NEEDED libraries.
- */
-extern bool android_link_namespaces(struct android_namespace_t* from,
-                                    struct android_namespace_t* to,
-                                    const char* shared_libs_sonames);
-
-extern struct android_namespace_t* android_get_exported_namespace(const char* name);
-
-__END_DECLS
-
-#endif /* __ANDROID_DLEXT_NAMESPACES_H__ */
diff --git a/libnativeloader/include/nativeloader/native_loader.h b/libnativeloader/include/nativeloader/native_loader.h
deleted file mode 100644
index 51fb875..0000000
--- a/libnativeloader/include/nativeloader/native_loader.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef NATIVE_LOADER_H_
-#define NATIVE_LOADER_H_
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "jni.h"
-#if defined(__ANDROID__)
-#include <android/dlext.h>
-#endif
-
-#ifdef __cplusplus
-namespace android {
-extern "C" {
-#endif  // __cplusplus
-
-// README: the char** error message parameter being passed
-// to the methods below need to be freed through calling NativeLoaderFreeErrorMessage.
-// It's the caller's responsibility to call that method.
-
-__attribute__((visibility("default")))
-void InitializeNativeLoader();
-
-__attribute__((visibility("default"))) jstring CreateClassLoaderNamespace(
-    JNIEnv* env, int32_t target_sdk_version, jobject class_loader, bool is_shared, jstring dex_path,
-    jstring library_path, jstring permitted_path);
-
-__attribute__((visibility("default"))) void* OpenNativeLibrary(
-    JNIEnv* env, int32_t target_sdk_version, const char* path, jobject class_loader,
-    const char* caller_location, jstring library_path, bool* needs_native_bridge, char** error_msg);
-
-__attribute__((visibility("default"))) bool CloseNativeLibrary(void* handle,
-                                                               const bool needs_native_bridge,
-                                                               char** error_msg);
-
-__attribute__((visibility("default"))) void NativeLoaderFreeErrorMessage(char* msg);
-
-#if defined(__ANDROID__)
-// Look up linker namespace by class_loader. Returns nullptr if
-// there is no namespace associated with the class_loader.
-// TODO(b/79940628): move users to FindNativeLoaderNamespaceByClassLoader and remove this function.
-__attribute__((visibility("default"))) struct android_namespace_t* FindNamespaceByClassLoader(
-    JNIEnv* env, jobject class_loader);
-// That version works with native bridge namespaces, but requires use of OpenNativeLibrary.
-struct NativeLoaderNamespace;
-__attribute__((visibility("default"))) struct NativeLoaderNamespace*
-FindNativeLoaderNamespaceByClassLoader(JNIEnv* env, jobject class_loader);
-// Load library.  Unlinke OpenNativeLibrary above couldn't create namespace on demand, but does
-// not require access to JNIEnv either.
-__attribute__((visibility("default"))) void* OpenNativeLibraryInNamespace(
-    struct NativeLoaderNamespace* ns, const char* path, bool* needs_native_bridge,
-    char** error_msg);
-#endif
-
-__attribute__((visibility("default")))
-void ResetNativeLoader();
-
-#ifdef __cplusplus
-}  // extern "C"
-}  // namespace android
-#endif  // __cplusplus
-
-#endif  // NATIVE_BRIDGE_H_
diff --git a/libnativeloader/libnativeloader.map.txt b/libnativeloader/libnativeloader.map.txt
deleted file mode 100644
index 40c30bd..0000000
--- a/libnativeloader/libnativeloader.map.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-#
-# Copyright (C) 2019 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# TODO(b/122710865): Prune these uses once the runtime APEX is complete.
-LIBNATIVELOADER_1 {
-  global:
-    OpenNativeLibrary;
-    InitializeNativeLoader;
-    ResetNativeLoader;
-    CloseNativeLibrary;
-    OpenNativeLibraryInNamespace;
-    FindNamespaceByClassLoader;
-    FindNativeLoaderNamespaceByClassLoader;
-    CreateClassLoaderNamespace;
-    NativeLoaderFreeErrorMessage;
-  local:
-    *;
-};
diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
deleted file mode 100644
index e460b1a..0000000
--- a/libnativeloader/native_loader.cpp
+++ /dev/null
@@ -1,952 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "nativeloader/native_loader.h"
-#include <nativehelper/ScopedUtfChars.h>
-
-#include <dlfcn.h>
-#ifdef __ANDROID__
-#define LOG_TAG "libnativeloader"
-#include "nativeloader/dlext_namespaces.h"
-#include "log/log.h"
-#endif
-#include <dirent.h>
-#include <sys/types.h>
-#include "nativebridge/native_bridge.h"
-
-#include <algorithm>
-#include <list>
-#include <memory>
-#include <mutex>
-#include <regex>
-#include <string>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/macros.h>
-#include <android-base/strings.h>
-
-#ifdef __BIONIC__
-#include <android-base/properties.h>
-#endif
-
-#define CHECK(predicate) LOG_ALWAYS_FATAL_IF(!(predicate),\
-                                             "%s:%d: %s CHECK '" #predicate "' failed.",\
-                                             __FILE__, __LINE__, __FUNCTION__)
-
-using namespace std::string_literals;
-
-namespace android {
-
-#if defined(__ANDROID__)
-struct NativeLoaderNamespace {
- public:
-  NativeLoaderNamespace()
-      : android_ns_(nullptr), native_bridge_ns_(nullptr) { }
-
-  explicit NativeLoaderNamespace(android_namespace_t* ns)
-      : android_ns_(ns), native_bridge_ns_(nullptr) { }
-
-  explicit NativeLoaderNamespace(native_bridge_namespace_t* ns)
-      : android_ns_(nullptr), native_bridge_ns_(ns) { }
-
-  NativeLoaderNamespace(NativeLoaderNamespace&& that) = default;
-  NativeLoaderNamespace(const NativeLoaderNamespace& that) = default;
-
-  NativeLoaderNamespace& operator=(const NativeLoaderNamespace& that) = default;
-
-  android_namespace_t* get_android_ns() const {
-    CHECK(native_bridge_ns_ == nullptr);
-    return android_ns_;
-  }
-
-  native_bridge_namespace_t* get_native_bridge_ns() const {
-    CHECK(android_ns_ == nullptr);
-    return native_bridge_ns_;
-  }
-
-  bool is_android_namespace() const {
-    return native_bridge_ns_ == nullptr;
-  }
-
- private:
-  // Only one of them can be not null
-  android_namespace_t* android_ns_;
-  native_bridge_namespace_t* native_bridge_ns_;
-};
-
-static constexpr const char kPublicNativeLibrariesSystemConfigPathFromRoot[] =
-    "/etc/public.libraries.txt";
-static constexpr const char kPublicNativeLibrariesExtensionConfigPrefix[] = "public.libraries-";
-static constexpr const size_t kPublicNativeLibrariesExtensionConfigPrefixLen =
-    sizeof(kPublicNativeLibrariesExtensionConfigPrefix) - 1;
-static constexpr const char kPublicNativeLibrariesExtensionConfigSuffix[] = ".txt";
-static constexpr const size_t kPublicNativeLibrariesExtensionConfigSuffixLen =
-    sizeof(kPublicNativeLibrariesExtensionConfigSuffix) - 1;
-static constexpr const char kPublicNativeLibrariesVendorConfig[] =
-    "/vendor/etc/public.libraries.txt";
-static constexpr const char kLlndkNativeLibrariesSystemConfigPathFromRoot[] =
-    "/etc/llndk.libraries.txt";
-static constexpr const char kVndkspNativeLibrariesSystemConfigPathFromRoot[] =
-    "/etc/vndksp.libraries.txt";
-
-static const std::vector<const std::string> kRuntimePublicLibraries = {
-    "libicuuc.so",
-    "libicui18n.so",
-};
-
-// The device may be configured to have the vendor libraries loaded to a separate namespace.
-// For historical reasons this namespace was named sphal but effectively it is intended
-// to use to load vendor libraries to separate namespace with controlled interface between
-// vendor and system namespaces.
-static constexpr const char* kVendorNamespaceName = "sphal";
-
-static constexpr const char* kVndkNamespaceName = "vndk";
-
-static constexpr const char* kDefaultNamespaceName = "default";
-static constexpr const char* kPlatformNamespaceName = "platform";
-static constexpr const char* kRuntimeNamespaceName = "runtime";
-
-// classloader-namespace is a linker namespace that is created for the loaded
-// app. To be specific, it is created for the app classloader. When
-// System.load() is called from a Java class that is loaded from the
-// classloader, the classloader-namespace namespace associated with that
-// classloader is selected for dlopen. The namespace is configured so that its
-// search path is set to the app-local JNI directory and it is linked to the
-// default namespace with the names of libs listed in the public.libraries.txt.
-// This way an app can only load its own JNI libraries along with the public libs.
-static constexpr const char* kClassloaderNamespaceName = "classloader-namespace";
-// Same thing for vendor APKs.
-static constexpr const char* kVendorClassloaderNamespaceName = "vendor-classloader-namespace";
-
-// (http://b/27588281) This is a workaround for apps using custom classloaders and calling
-// System.load() with an absolute path which is outside of the classloader library search path.
-// This list includes all directories app is allowed to access this way.
-static constexpr const char* kWhitelistedDirectories = "/data:/mnt/expand";
-
-static constexpr const char* kApexPath = "/apex/";
-
-#if defined(__LP64__)
-static constexpr const char* kRuntimeApexLibPath = "/apex/com.android.runtime/lib64";
-static constexpr const char* kVendorLibPath = "/vendor/lib64";
-static constexpr const char* kProductLibPath = "/product/lib64:/system/product/lib64";
-#else
-static constexpr const char* kRuntimeApexLibPath = "/apex/com.android.runtime/lib";
-static constexpr const char* kVendorLibPath = "/vendor/lib";
-static constexpr const char* kProductLibPath = "/product/lib:/system/product/lib";
-#endif
-
-static const std::regex kVendorDexPathRegex("(^|:)/vendor/");
-static const std::regex kProductDexPathRegex("(^|:)(/system)?/product/");
-
-// Define origin of APK if it is from vendor partition or product partition
-typedef enum {
-  APK_ORIGIN_DEFAULT = 0,
-  APK_ORIGIN_VENDOR = 1,
-  APK_ORIGIN_PRODUCT = 2,
-} ApkOrigin;
-
-static bool is_debuggable() {
-  bool debuggable = false;
-#ifdef __BIONIC__
-  debuggable = android::base::GetBoolProperty("ro.debuggable", false);
-#endif
-  return debuggable;
-}
-
-static std::string vndk_version_str() {
-#ifdef __BIONIC__
-  std::string version = android::base::GetProperty("ro.vndk.version", "");
-  if (version != "" && version != "current") {
-    return "." + version;
-  }
-#endif
-  return "";
-}
-
-static void insert_vndk_version_str(std::string* file_name) {
-  CHECK(file_name != nullptr);
-  size_t insert_pos = file_name->find_last_of(".");
-  if (insert_pos == std::string::npos) {
-    insert_pos = file_name->length();
-  }
-  file_name->insert(insert_pos, vndk_version_str());
-}
-
-static const std::function<bool(const std::string&, std::string*)> always_true =
-    [](const std::string&, std::string*) { return true; };
-
-class LibraryNamespaces {
- public:
-  LibraryNamespaces() : initialized_(false) { }
-
-  NativeLoaderNamespace* Create(JNIEnv* env, uint32_t target_sdk_version, jobject class_loader,
-                                bool is_shared, jstring dex_path, jstring java_library_path,
-                                jstring java_permitted_path, std::string* error_msg) {
-    std::string library_path; // empty string by default.
-
-    if (java_library_path != nullptr) {
-      ScopedUtfChars library_path_utf_chars(env, java_library_path);
-      library_path = library_path_utf_chars.c_str();
-    }
-
-    ApkOrigin apk_origin = GetApkOriginFromDexPath(env, dex_path);
-
-    // (http://b/27588281) This is a workaround for apps using custom
-    // classloaders and calling System.load() with an absolute path which
-    // is outside of the classloader library search path.
-    //
-    // This part effectively allows such a classloader to access anything
-    // under /data and /mnt/expand
-    std::string permitted_path = kWhitelistedDirectories;
-
-    if (java_permitted_path != nullptr) {
-      ScopedUtfChars path(env, java_permitted_path);
-      if (path.c_str() != nullptr && path.size() > 0) {
-        permitted_path = permitted_path + ":" + path.c_str();
-      }
-    }
-
-    // Initialize the anonymous namespace with the first non-empty library path.
-    if (!library_path.empty() && !initialized_ &&
-        !InitPublicNamespace(library_path.c_str(), error_msg)) {
-      return nullptr;
-    }
-
-    bool found = FindNamespaceByClassLoader(env, class_loader);
-
-    LOG_ALWAYS_FATAL_IF(found,
-                        "There is already a namespace associated with this classloader");
-
-    uint64_t namespace_type = ANDROID_NAMESPACE_TYPE_ISOLATED;
-    if (is_shared) {
-      namespace_type |= ANDROID_NAMESPACE_TYPE_SHARED;
-    }
-
-    if (target_sdk_version < 24) {
-      namespace_type |= ANDROID_NAMESPACE_TYPE_GREYLIST_ENABLED;
-    }
-
-    NativeLoaderNamespace* parent_ns = FindParentNamespaceByClassLoader(env, class_loader);
-
-    bool is_native_bridge = false;
-
-    if (parent_ns != nullptr) {
-      is_native_bridge = !parent_ns->is_android_namespace();
-    } else if (!library_path.empty()) {
-      is_native_bridge = NativeBridgeIsPathSupported(library_path.c_str());
-    }
-
-    std::string system_exposed_libraries = system_public_libraries_;
-    const char* namespace_name = kClassloaderNamespaceName;
-    android_namespace_t* vndk_ns = nullptr;
-    if ((apk_origin == APK_ORIGIN_VENDOR ||
-         (apk_origin == APK_ORIGIN_PRODUCT && target_sdk_version > 29)) &&
-        !is_shared) {
-      LOG_FATAL_IF(is_native_bridge,
-                   "Unbundled vendor / product apk must not use translated architecture");
-
-      // For vendor / product apks, give access to the vendor / product lib even though
-      // they are treated as unbundled; the libs and apks are still bundled
-      // together in the vendor / product partition.
-      const char* origin_partition;
-      const char* origin_lib_path;
-
-      switch (apk_origin) {
-        case APK_ORIGIN_VENDOR:
-          origin_partition = "vendor";
-          origin_lib_path = kVendorLibPath;
-          break;
-        case APK_ORIGIN_PRODUCT:
-          origin_partition = "product";
-          origin_lib_path = kProductLibPath;
-          break;
-        default:
-          origin_partition = "unknown";
-          origin_lib_path = "";
-      }
-
-      LOG_FATAL_IF(is_native_bridge, "Unbundled %s apk must not use translated architecture",
-                   origin_partition);
-
-      library_path = library_path + ":" + origin_lib_path;
-      permitted_path = permitted_path + ":" + origin_lib_path;
-
-      // Also give access to LLNDK libraries since they are available to vendors
-      system_exposed_libraries = system_exposed_libraries + ":" + system_llndk_libraries_.c_str();
-
-      // Give access to VNDK-SP libraries from the 'vndk' namespace.
-      vndk_ns = android_get_exported_namespace(kVndkNamespaceName);
-      if (vndk_ns == nullptr) {
-        ALOGW("Cannot find \"%s\" namespace for %s apks", kVndkNamespaceName, origin_partition);
-      }
-
-      // Different name is useful for debugging
-      namespace_name = kVendorClassloaderNamespaceName;
-      ALOGD("classloader namespace configured for unbundled %s apk. library_path=%s",
-            origin_partition, library_path.c_str());
-    } else {
-      // oem and product public libraries are NOT available to vendor apks, otherwise it
-      // would be system->vendor violation.
-      if (!oem_public_libraries_.empty()) {
-        system_exposed_libraries = system_exposed_libraries + ':' + oem_public_libraries_;
-      }
-      if (!product_public_libraries_.empty()) {
-        system_exposed_libraries = system_exposed_libraries + ':' + product_public_libraries_;
-      }
-    }
-
-    std::string runtime_exposed_libraries = base::Join(kRuntimePublicLibraries, ":");
-
-    NativeLoaderNamespace native_loader_ns;
-    if (!is_native_bridge) {
-      android_namespace_t* android_parent_ns;
-      if (parent_ns != nullptr) {
-        android_parent_ns = parent_ns->get_android_ns();
-      } else {
-        // Fall back to the platform namespace if no parent is found. It is
-        // called "default" for binaries in /system and "platform" for those in
-        // the Runtime APEX. Try "platform" first since "default" always exists.
-        android_parent_ns = android_get_exported_namespace(kPlatformNamespaceName);
-        if (android_parent_ns == nullptr) {
-          android_parent_ns = android_get_exported_namespace(kDefaultNamespaceName);
-        }
-      }
-
-      android_namespace_t* ns = android_create_namespace(namespace_name,
-                                                         nullptr,
-                                                         library_path.c_str(),
-                                                         namespace_type,
-                                                         permitted_path.c_str(),
-                                                         android_parent_ns);
-      if (ns == nullptr) {
-        *error_msg = dlerror();
-        return nullptr;
-      }
-
-      // Note that when vendor_ns is not configured this function will return nullptr
-      // and it will result in linking vendor_public_libraries_ to the default namespace
-      // which is expected behavior in this case.
-      android_namespace_t* vendor_ns = android_get_exported_namespace(kVendorNamespaceName);
-
-      android_namespace_t* runtime_ns = android_get_exported_namespace(kRuntimeNamespaceName);
-
-      if (!android_link_namespaces(ns, nullptr, system_exposed_libraries.c_str())) {
-        *error_msg = dlerror();
-        return nullptr;
-      }
-
-      // Runtime apex does not exist in host, and under certain build conditions.
-      if (runtime_ns != nullptr) {
-        if (!android_link_namespaces(ns, runtime_ns, runtime_exposed_libraries.c_str())) {
-          *error_msg = dlerror();
-          return nullptr;
-        }
-      }
-
-      if (vndk_ns != nullptr && !system_vndksp_libraries_.empty()) {
-        // vendor apks are allowed to use VNDK-SP libraries.
-        if (!android_link_namespaces(ns, vndk_ns, system_vndksp_libraries_.c_str())) {
-          *error_msg = dlerror();
-          return nullptr;
-        }
-      }
-
-      if (!vendor_public_libraries_.empty()) {
-        if (!android_link_namespaces(ns, vendor_ns, vendor_public_libraries_.c_str())) {
-          *error_msg = dlerror();
-          return nullptr;
-        }
-      }
-
-      native_loader_ns = NativeLoaderNamespace(ns);
-    } else {
-      native_bridge_namespace_t* native_bridge_parent_namespace;
-      if (parent_ns != nullptr) {
-        native_bridge_parent_namespace = parent_ns->get_native_bridge_ns();
-      } else {
-        native_bridge_parent_namespace = NativeBridgeGetExportedNamespace(kPlatformNamespaceName);
-        if (native_bridge_parent_namespace == nullptr) {
-          native_bridge_parent_namespace = NativeBridgeGetExportedNamespace(kDefaultNamespaceName);
-        }
-      }
-
-      native_bridge_namespace_t* ns = NativeBridgeCreateNamespace(namespace_name,
-                                                                  nullptr,
-                                                                  library_path.c_str(),
-                                                                  namespace_type,
-                                                                  permitted_path.c_str(),
-                                                                  native_bridge_parent_namespace);
-      if (ns == nullptr) {
-        *error_msg = NativeBridgeGetError();
-        return nullptr;
-      }
-
-      native_bridge_namespace_t* vendor_ns = NativeBridgeGetExportedNamespace(kVendorNamespaceName);
-      native_bridge_namespace_t* runtime_ns =
-          NativeBridgeGetExportedNamespace(kRuntimeNamespaceName);
-
-      if (!NativeBridgeLinkNamespaces(ns, nullptr, system_exposed_libraries.c_str())) {
-        *error_msg = NativeBridgeGetError();
-        return nullptr;
-      }
-
-      // Runtime apex does not exist in host, and under certain build conditions.
-      if (runtime_ns != nullptr) {
-        if (!NativeBridgeLinkNamespaces(ns, runtime_ns, runtime_exposed_libraries.c_str())) {
-          *error_msg = NativeBridgeGetError();
-          return nullptr;
-        }
-      }
-      if (!vendor_public_libraries_.empty()) {
-        if (!NativeBridgeLinkNamespaces(ns, vendor_ns, vendor_public_libraries_.c_str())) {
-          *error_msg = NativeBridgeGetError();
-          return nullptr;
-        }
-      }
-
-      native_loader_ns = NativeLoaderNamespace(ns);
-    }
-
-    namespaces_.push_back(std::make_pair(env->NewWeakGlobalRef(class_loader), native_loader_ns));
-
-    return &(namespaces_.back().second);
-  }
-
-  NativeLoaderNamespace* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
-    auto it = std::find_if(namespaces_.begin(), namespaces_.end(),
-                [&](const std::pair<jweak, NativeLoaderNamespace>& value) {
-                  return env->IsSameObject(value.first, class_loader);
-                });
-    if (it != namespaces_.end()) {
-      return &it->second;
-    }
-
-    return nullptr;
-  }
-
-  void Initialize() {
-    // Once public namespace is initialized there is no
-    // point in running this code - it will have no effect
-    // on the current list of public libraries.
-    if (initialized_) {
-      return;
-    }
-
-    std::vector<std::string> sonames;
-    const char* android_root_env = getenv("ANDROID_ROOT");
-    std::string root_dir = android_root_env != nullptr ? android_root_env : "/system";
-    std::string public_native_libraries_system_config =
-            root_dir + kPublicNativeLibrariesSystemConfigPathFromRoot;
-    std::string llndk_native_libraries_system_config =
-            root_dir + kLlndkNativeLibrariesSystemConfigPathFromRoot;
-    std::string vndksp_native_libraries_system_config =
-            root_dir + kVndkspNativeLibrariesSystemConfigPathFromRoot;
-
-    std::string product_public_native_libraries_dir = "/product/etc";
-
-    std::string error_msg;
-    LOG_ALWAYS_FATAL_IF(
-        !ReadConfig(public_native_libraries_system_config, &sonames, always_true, &error_msg),
-        "Error reading public native library list from \"%s\": %s",
-        public_native_libraries_system_config.c_str(), error_msg.c_str());
-
-    // For debuggable platform builds use ANDROID_ADDITIONAL_PUBLIC_LIBRARIES environment
-    // variable to add libraries to the list. This is intended for platform tests only.
-    if (is_debuggable()) {
-      const char* additional_libs = getenv("ANDROID_ADDITIONAL_PUBLIC_LIBRARIES");
-      if (additional_libs != nullptr && additional_libs[0] != '\0') {
-        std::vector<std::string> additional_libs_vector = base::Split(additional_libs, ":");
-        std::copy(additional_libs_vector.begin(), additional_libs_vector.end(),
-                  std::back_inserter(sonames));
-      }
-    }
-
-    // Remove the public libs in the runtime namespace.
-    // These libs are listed in public.android.txt, but we don't want the rest of android
-    // in default namespace to dlopen the libs.
-    // For example, libicuuc.so is exposed to classloader namespace from runtime namespace.
-    // Unfortunately, it does not have stable C symbols, and default namespace should only use
-    // stable symbols in libandroidicu.so. http://b/120786417
-    removePublicLibsIfExistsInRuntimeApex(sonames);
-
-    // android_init_namespaces() expects all the public libraries
-    // to be loaded so that they can be found by soname alone.
-    //
-    // TODO(dimitry): this is a bit misleading since we do not know
-    // if the vendor public library is going to be opened from /vendor/lib
-    // we might as well end up loading them from /system/lib or /product/lib
-    // For now we rely on CTS test to catch things like this but
-    // it should probably be addressed in the future.
-    for (const auto& soname : sonames) {
-      LOG_ALWAYS_FATAL_IF(dlopen(soname.c_str(), RTLD_NOW | RTLD_NODELETE) == nullptr,
-                          "Error preloading public library %s: %s", soname.c_str(), dlerror());
-    }
-
-    system_public_libraries_ = base::Join(sonames, ':');
-
-    // read /system/etc/public.libraries-<companyname>.txt which contain partner defined
-    // system libs that are exposed to apps. The libs in the txt files must be
-    // named as lib<name>.<companyname>.so.
-    sonames.clear();
-    ReadExtensionLibraries(base::Dirname(public_native_libraries_system_config).c_str(), &sonames);
-    oem_public_libraries_ = base::Join(sonames, ':');
-
-    // read /product/etc/public.libraries-<companyname>.txt which contain partner defined
-    // product libs that are exposed to apps.
-    sonames.clear();
-    ReadExtensionLibraries(product_public_native_libraries_dir.c_str(), &sonames);
-    product_public_libraries_ = base::Join(sonames, ':');
-
-    // Insert VNDK version to llndk and vndksp config file names.
-    insert_vndk_version_str(&llndk_native_libraries_system_config);
-    insert_vndk_version_str(&vndksp_native_libraries_system_config);
-
-    sonames.clear();
-    ReadConfig(llndk_native_libraries_system_config, &sonames, always_true);
-    system_llndk_libraries_ = base::Join(sonames, ':');
-
-    sonames.clear();
-    ReadConfig(vndksp_native_libraries_system_config, &sonames, always_true);
-    system_vndksp_libraries_ = base::Join(sonames, ':');
-
-    sonames.clear();
-    // This file is optional, quietly ignore if the file does not exist.
-    ReadConfig(kPublicNativeLibrariesVendorConfig, &sonames, always_true, nullptr);
-
-    vendor_public_libraries_ = base::Join(sonames, ':');
-  }
-
-  void Reset() { namespaces_.clear(); }
-
- private:
-  void ReadExtensionLibraries(const char* dirname, std::vector<std::string>* sonames) {
-    std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(dirname), closedir);
-    if (dir != nullptr) {
-      // Failing to opening the dir is not an error, which can happen in
-      // webview_zygote.
-      while (struct dirent* ent = readdir(dir.get())) {
-        if (ent->d_type != DT_REG && ent->d_type != DT_LNK) {
-          continue;
-        }
-        const std::string filename(ent->d_name);
-        if (android::base::StartsWith(filename, kPublicNativeLibrariesExtensionConfigPrefix) &&
-            android::base::EndsWith(filename, kPublicNativeLibrariesExtensionConfigSuffix)) {
-          const size_t start = kPublicNativeLibrariesExtensionConfigPrefixLen;
-          const size_t end = filename.size() - kPublicNativeLibrariesExtensionConfigSuffixLen;
-          const std::string company_name = filename.substr(start, end - start);
-          const std::string config_file_path = dirname + "/"s + filename;
-          LOG_ALWAYS_FATAL_IF(
-              company_name.empty(),
-              "Error extracting company name from public native library list file path \"%s\"",
-              config_file_path.c_str());
-
-          std::string error_msg;
-
-          LOG_ALWAYS_FATAL_IF(
-              !ReadConfig(
-                  config_file_path, sonames,
-                  [&company_name](const std::string& soname, std::string* error_msg) {
-                    if (android::base::StartsWith(soname, "lib") &&
-                        android::base::EndsWith(soname, "." + company_name + ".so")) {
-                      return true;
-                    } else {
-                      *error_msg = "Library name \"" + soname +
-                                   "\" does not end with the company name: " + company_name + ".";
-                      return false;
-                    }
-                  },
-                  &error_msg),
-              "Error reading public native library list from \"%s\": %s", config_file_path.c_str(),
-              error_msg.c_str());
-        }
-      }
-    }
-  }
-
-  /**
-   * Remove the public libs in runtime namespace
-   */
-  void removePublicLibsIfExistsInRuntimeApex(std::vector<std::string>& sonames) {
-    for (const std::string& lib_name : kRuntimePublicLibraries) {
-      std::string path(kRuntimeApexLibPath);
-      path.append("/").append(lib_name);
-
-      struct stat s;
-      // Do nothing if the path in /apex does not exist.
-      // Runtime APEX must be mounted since libnativeloader is in the same APEX
-      if (stat(path.c_str(), &s) != 0) {
-        continue;
-      }
-
-      auto it = std::find(sonames.begin(), sonames.end(), lib_name);
-      if (it != sonames.end()) {
-        sonames.erase(it);
-      }
-    }
-  }
-
-  bool ReadConfig(const std::string& configFile, std::vector<std::string>* sonames,
-                  const std::function<bool(const std::string& /* soname */,
-                                           std::string* /* error_msg */)>& check_soname,
-                  std::string* error_msg = nullptr) {
-    // Read list of public native libraries from the config file.
-    std::string file_content;
-    if(!base::ReadFileToString(configFile, &file_content)) {
-      if (error_msg) *error_msg = strerror(errno);
-      return false;
-    }
-
-    std::vector<std::string> lines = base::Split(file_content, "\n");
-
-    for (auto& line : lines) {
-      auto trimmed_line = base::Trim(line);
-      if (trimmed_line[0] == '#' || trimmed_line.empty()) {
-        continue;
-      }
-      size_t space_pos = trimmed_line.rfind(' ');
-      if (space_pos != std::string::npos) {
-        std::string type = trimmed_line.substr(space_pos + 1);
-        if (type != "32" && type != "64") {
-          if (error_msg) *error_msg = "Malformed line: " + line;
-          return false;
-        }
-#if defined(__LP64__)
-        // Skip 32 bit public library.
-        if (type == "32") {
-          continue;
-        }
-#else
-        // Skip 64 bit public library.
-        if (type == "64") {
-          continue;
-        }
-#endif
-        trimmed_line.resize(space_pos);
-      }
-
-      if (check_soname(trimmed_line, error_msg)) {
-        sonames->push_back(trimmed_line);
-      } else {
-        return false;
-      }
-    }
-
-    return true;
-  }
-
-  bool InitPublicNamespace(const char* library_path, std::string* error_msg) {
-    // Ask native bride if this apps library path should be handled by it
-    bool is_native_bridge = NativeBridgeIsPathSupported(library_path);
-
-    // (http://b/25844435) - Some apps call dlopen from generated code (mono jited
-    // code is one example) unknown to linker in which  case linker uses anonymous
-    // namespace. The second argument specifies the search path for the anonymous
-    // namespace which is the library_path of the classloader.
-    initialized_ = android_init_anonymous_namespace(system_public_libraries_.c_str(),
-                                                    is_native_bridge ? nullptr : library_path);
-    if (!initialized_) {
-      *error_msg = dlerror();
-      return false;
-    }
-
-    // and now initialize native bridge namespaces if necessary.
-    if (NativeBridgeInitialized()) {
-      initialized_ = NativeBridgeInitAnonymousNamespace(system_public_libraries_.c_str(),
-                                                        is_native_bridge ? library_path : nullptr);
-      if (!initialized_) {
-        *error_msg = NativeBridgeGetError();
-      }
-    }
-
-    return initialized_;
-  }
-
-  jobject GetParentClassLoader(JNIEnv* env, jobject class_loader) {
-    jclass class_loader_class = env->FindClass("java/lang/ClassLoader");
-    jmethodID get_parent = env->GetMethodID(class_loader_class,
-                                            "getParent",
-                                            "()Ljava/lang/ClassLoader;");
-
-    return env->CallObjectMethod(class_loader, get_parent);
-  }
-
-  NativeLoaderNamespace* FindParentNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
-    jobject parent_class_loader = GetParentClassLoader(env, class_loader);
-
-    while (parent_class_loader != nullptr) {
-      NativeLoaderNamespace* ns;
-      if ((ns = FindNamespaceByClassLoader(env, parent_class_loader)) != nullptr) {
-        return ns;
-      }
-
-      parent_class_loader = GetParentClassLoader(env, parent_class_loader);
-    }
-
-    return nullptr;
-  }
-
-  ApkOrigin GetApkOriginFromDexPath(JNIEnv* env, jstring dex_path) {
-    ApkOrigin apk_origin = APK_ORIGIN_DEFAULT;
-
-    if (dex_path != nullptr) {
-      ScopedUtfChars dex_path_utf_chars(env, dex_path);
-
-      if (std::regex_search(dex_path_utf_chars.c_str(), kVendorDexPathRegex)) {
-        apk_origin = APK_ORIGIN_VENDOR;
-      }
-
-      if (std::regex_search(dex_path_utf_chars.c_str(), kProductDexPathRegex)) {
-        LOG_ALWAYS_FATAL_IF(apk_origin == APK_ORIGIN_VENDOR,
-                            "Dex path contains both vendor and product partition : %s",
-                            dex_path_utf_chars.c_str());
-
-        apk_origin = APK_ORIGIN_PRODUCT;
-      }
-    }
-
-    return apk_origin;
-  }
-
-  bool initialized_;
-  std::list<std::pair<jweak, NativeLoaderNamespace>> namespaces_;
-  std::string system_public_libraries_;
-  std::string vendor_public_libraries_;
-  std::string oem_public_libraries_;
-  std::string product_public_libraries_;
-  std::string system_llndk_libraries_;
-  std::string system_vndksp_libraries_;
-
-  DISALLOW_COPY_AND_ASSIGN(LibraryNamespaces);
-};
-
-static std::mutex g_namespaces_mutex;
-static LibraryNamespaces* g_namespaces = new LibraryNamespaces;
-#endif
-
-void InitializeNativeLoader() {
-#if defined(__ANDROID__)
-  std::lock_guard<std::mutex> guard(g_namespaces_mutex);
-  g_namespaces->Initialize();
-#endif
-}
-
-void ResetNativeLoader() {
-#if defined(__ANDROID__)
-  std::lock_guard<std::mutex> guard(g_namespaces_mutex);
-  g_namespaces->Reset();
-#endif
-}
-
-jstring CreateClassLoaderNamespace(JNIEnv* env, int32_t target_sdk_version, jobject class_loader,
-                                   bool is_shared, jstring dex_path, jstring library_path,
-                                   jstring permitted_path) {
-#if defined(__ANDROID__)
-  std::lock_guard<std::mutex> guard(g_namespaces_mutex);
-
-  std::string error_msg;
-  bool success = g_namespaces->Create(env, target_sdk_version, class_loader, is_shared, dex_path,
-                                      library_path, permitted_path, &error_msg) != nullptr;
-  if (!success) {
-    return env->NewStringUTF(error_msg.c_str());
-  }
-#else
-  UNUSED(env, target_sdk_version, class_loader, is_shared, dex_path, library_path, permitted_path);
-#endif
-  return nullptr;
-}
-
-#if defined(__ANDROID__)
-static android_namespace_t* FindExportedNamespace(const char* caller_location) {
-  std::string location = caller_location;
-  // Lots of implicit assumptions here: we expect `caller_location` to be of the form:
-  // /apex/com.android...modulename/...
-  //
-  // And we extract from it 'modulename', which is the name of the linker namespace.
-  if (android::base::StartsWith(location, kApexPath)) {
-    size_t slash_index = location.find_first_of('/', strlen(kApexPath));
-    LOG_ALWAYS_FATAL_IF((slash_index == std::string::npos),
-                        "Error finding namespace of apex: no slash in path %s", caller_location);
-    size_t dot_index = location.find_last_of('.', slash_index);
-    LOG_ALWAYS_FATAL_IF((dot_index == std::string::npos),
-                        "Error finding namespace of apex: no dot in apex name %s", caller_location);
-    std::string name = location.substr(dot_index + 1, slash_index - dot_index - 1);
-    android_namespace_t* boot_namespace = android_get_exported_namespace(name.c_str());
-    LOG_ALWAYS_FATAL_IF((boot_namespace == nullptr),
-                        "Error finding namespace of apex: no namespace called %s", name.c_str());
-    return boot_namespace;
-  }
-  return nullptr;
-}
-#endif
-
-void* OpenNativeLibrary(JNIEnv* env, int32_t target_sdk_version, const char* path,
-                        jobject class_loader, const char* caller_location, jstring library_path,
-                        bool* needs_native_bridge, char** error_msg) {
-#if defined(__ANDROID__)
-  UNUSED(target_sdk_version);
-  if (class_loader == nullptr) {
-    *needs_native_bridge = false;
-    if (caller_location != nullptr) {
-      android_namespace_t* boot_namespace = FindExportedNamespace(caller_location);
-      if (boot_namespace != nullptr) {
-        const android_dlextinfo dlextinfo = {
-            .flags = ANDROID_DLEXT_USE_NAMESPACE,
-            .library_namespace = boot_namespace,
-        };
-        void* handle = android_dlopen_ext(path, RTLD_NOW, &dlextinfo);
-        if (handle == nullptr) {
-          *error_msg = strdup(dlerror());
-        }
-        return handle;
-      }
-    }
-    void* handle = dlopen(path, RTLD_NOW);
-    if (handle == nullptr) {
-      *error_msg = strdup(dlerror());
-    }
-    return handle;
-  }
-
-  std::lock_guard<std::mutex> guard(g_namespaces_mutex);
-  NativeLoaderNamespace* ns;
-
-  if ((ns = g_namespaces->FindNamespaceByClassLoader(env, class_loader)) == nullptr) {
-    // This is the case where the classloader was not created by ApplicationLoaders
-    // In this case we create an isolated not-shared namespace for it.
-    std::string create_error_msg;
-    if ((ns = g_namespaces->Create(env, target_sdk_version, class_loader, false /* is_shared */,
-                                   nullptr, library_path, nullptr, &create_error_msg)) == nullptr) {
-      *error_msg = strdup(create_error_msg.c_str());
-      return nullptr;
-    }
-  }
-
-  return OpenNativeLibraryInNamespace(ns, path, needs_native_bridge, error_msg);
-#else
-  UNUSED(env, target_sdk_version, class_loader, caller_location);
-
-  // Do some best effort to emulate library-path support. It will not
-  // work for dependencies.
-  //
-  // Note: null has a special meaning and must be preserved.
-  std::string c_library_path;  // Empty string by default.
-  if (library_path != nullptr && path != nullptr && path[0] != '/') {
-    ScopedUtfChars library_path_utf_chars(env, library_path);
-    c_library_path = library_path_utf_chars.c_str();
-  }
-
-  std::vector<std::string> library_paths = base::Split(c_library_path, ":");
-
-  for (const std::string& lib_path : library_paths) {
-    *needs_native_bridge = false;
-    const char* path_arg;
-    std::string complete_path;
-    if (path == nullptr) {
-      // Preserve null.
-      path_arg = nullptr;
-    } else {
-      complete_path = lib_path;
-      if (!complete_path.empty()) {
-        complete_path.append("/");
-      }
-      complete_path.append(path);
-      path_arg = complete_path.c_str();
-    }
-    void* handle = dlopen(path_arg, RTLD_NOW);
-    if (handle != nullptr) {
-      return handle;
-    }
-    if (NativeBridgeIsSupported(path_arg)) {
-      *needs_native_bridge = true;
-      handle = NativeBridgeLoadLibrary(path_arg, RTLD_NOW);
-      if (handle != nullptr) {
-        return handle;
-      }
-      *error_msg = strdup(NativeBridgeGetError());
-    } else {
-      *error_msg = strdup(dlerror());
-    }
-  }
-  return nullptr;
-#endif
-}
-
-bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, char** error_msg) {
-  bool success;
-  if (needs_native_bridge) {
-    success = (NativeBridgeUnloadLibrary(handle) == 0);
-    if (!success) {
-      *error_msg = strdup(NativeBridgeGetError());
-    }
-  } else {
-    success = (dlclose(handle) == 0);
-    if (!success) {
-      *error_msg = strdup(dlerror());
-    }
-  }
-
-  return success;
-}
-
-void NativeLoaderFreeErrorMessage(char* msg) {
-  // The error messages get allocated through strdup, so we must call free on them.
-  free(msg);
-}
-
-#if defined(__ANDROID__)
-void* OpenNativeLibraryInNamespace(NativeLoaderNamespace* ns, const char* path,
-                                   bool* needs_native_bridge, char** error_msg) {
-  if (ns->is_android_namespace()) {
-    android_dlextinfo extinfo;
-    extinfo.flags = ANDROID_DLEXT_USE_NAMESPACE;
-    extinfo.library_namespace = ns->get_android_ns();
-
-    void* handle = android_dlopen_ext(path, RTLD_NOW, &extinfo);
-    if (handle == nullptr) {
-      *error_msg = strdup(dlerror());
-    }
-    *needs_native_bridge = false;
-    return handle;
-  } else {
-    void* handle = NativeBridgeLoadLibraryExt(path, RTLD_NOW, ns->get_native_bridge_ns());
-    if (handle == nullptr) {
-      *error_msg = strdup(NativeBridgeGetError());
-    }
-    *needs_native_bridge = true;
-    return handle;
-  }
-}
-
-// native_bridge_namespaces are not supported for callers of this function.
-// This function will return nullptr in the case when application is running
-// on native bridge.
-android_namespace_t* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
-  std::lock_guard<std::mutex> guard(g_namespaces_mutex);
-  NativeLoaderNamespace* ns = g_namespaces->FindNamespaceByClassLoader(env, class_loader);
-  if (ns != nullptr) {
-    return ns->is_android_namespace() ? ns->get_android_ns() : nullptr;
-  }
-
-  return nullptr;
-}
-NativeLoaderNamespace* FindNativeLoaderNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
-  std::lock_guard<std::mutex> guard(g_namespaces_mutex);
-  return g_namespaces->FindNamespaceByClassLoader(env, class_loader);
-}
-#endif
-
-}; //  android namespace
diff --git a/libnativeloader/native_loader_lazy.cpp b/libnativeloader/native_loader_lazy.cpp
deleted file mode 100644
index 2eb1203..0000000
--- a/libnativeloader/native_loader_lazy.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "nativeloader/native_loader.h"
-#define LOG_TAG "nativeloader"
-
-#include <dlfcn.h>
-#include <errno.h>
-#include <string.h>
-
-#include <log/log.h>
-
-namespace android {
-
-namespace {
-
-void* GetLibHandle() {
-  static void* handle = dlopen("libnativeloader.so", RTLD_NOW);
-  LOG_FATAL_IF(handle == nullptr, "Failed to load libnativeloader.so: %s", dlerror());
-  return handle;
-}
-
-template <typename FuncPtr>
-FuncPtr GetFuncPtr(const char* function_name) {
-  auto f = reinterpret_cast<FuncPtr>(dlsym(GetLibHandle(), function_name));
-  LOG_FATAL_IF(f == nullptr, "Failed to get address of %s: %s", function_name, dlerror());
-  return f;
-}
-
-#define GET_FUNC_PTR(name) GetFuncPtr<decltype(&name)>(#name)
-
-}  // namespace
-
-void InitializeNativeLoader() {
-  static auto f = GET_FUNC_PTR(InitializeNativeLoader);
-  return f();
-}
-
-jstring CreateClassLoaderNamespace(JNIEnv* env, int32_t target_sdk_version, jobject class_loader,
-                                   bool is_shared, jstring dex_path, jstring library_path,
-                                   jstring permitted_path) {
-  static auto f = GET_FUNC_PTR(CreateClassLoaderNamespace);
-  return f(env, target_sdk_version, class_loader, is_shared, dex_path, library_path,
-           permitted_path);
-}
-
-void* OpenNativeLibrary(JNIEnv* env, int32_t target_sdk_version, const char* path,
-                        jobject class_loader, const char* caller_location, jstring library_path,
-                        bool* needs_native_bridge, char** error_msg) {
-  static auto f = GET_FUNC_PTR(OpenNativeLibrary);
-  return f(env, target_sdk_version, path, class_loader, caller_location, library_path,
-           needs_native_bridge, error_msg);
-}
-
-bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, char** error_msg) {
-  static auto f = GET_FUNC_PTR(CloseNativeLibrary);
-  return f(handle, needs_native_bridge, error_msg);
-}
-
-void NativeLoaderFreeErrorMessage(char* msg) {
-  static auto f = GET_FUNC_PTR(NativeLoaderFreeErrorMessage);
-  return f(msg);
-}
-
-struct android_namespace_t* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
-  static auto f = GET_FUNC_PTR(FindNamespaceByClassLoader);
-  return f(env, class_loader);
-}
-
-struct NativeLoaderNamespace* FindNativeLoaderNamespaceByClassLoader(JNIEnv* env,
-                                                                     jobject class_loader) {
-  static auto f = GET_FUNC_PTR(FindNativeLoaderNamespaceByClassLoader);
-  return f(env, class_loader);
-}
-
-void* OpenNativeLibraryInNamespace(struct NativeLoaderNamespace* ns, const char* path,
-                                   bool* needs_native_bridge, char** error_msg) {
-  static auto f = GET_FUNC_PTR(OpenNativeLibraryInNamespace);
-  return f(ns, path, needs_native_bridge, error_msg);
-}
-
-void ResetNativeLoader() {
-  static auto f = GET_FUNC_PTR(ResetNativeLoader);
-  return f();
-}
-
-#undef GET_FUNC_PTR
-
-}  // namespace android
diff --git a/libnativeloader/test/Android.bp b/libnativeloader/test/Android.bp
deleted file mode 100644
index 4d5c53d..0000000
--- a/libnativeloader/test/Android.bp
+++ /dev/null
@@ -1,82 +0,0 @@
-//
-// Copyright (C) 2017 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-cc_library {
-    name: "libfoo.oem1",
-    srcs: ["test.cpp"],
-    cflags: ["-DLIBNAME=\"libfoo.oem1.so\""],
-    shared_libs: [
-        "libbase",
-    ],
-}
-
-cc_library {
-    name: "libbar.oem1",
-    srcs: ["test.cpp"],
-    cflags: ["-DLIBNAME=\"libbar.oem1.so\""],
-    shared_libs: [
-        "libbase",
-    ],
-}
-
-cc_library {
-    name: "libfoo.oem2",
-    srcs: ["test.cpp"],
-    cflags: ["-DLIBNAME=\"libfoo.oem2.so\""],
-    shared_libs: [
-        "libbase",
-    ],
-}
-
-cc_library {
-    name: "libbar.oem2",
-    srcs: ["test.cpp"],
-    cflags: ["-DLIBNAME=\"libbar.oem2.so\""],
-    shared_libs: [
-        "libbase",
-    ],
-}
-
-cc_library {
-    name: "libfoo.product1",
-    srcs: ["test.cpp"],
-    cflags: ["-DLIBNAME=\"libfoo.product1.so\""],
-    product_specific: true,
-    shared_libs: [
-        "libbase",
-    ],
-}
-
-cc_library {
-    name: "libbar.product1",
-    srcs: ["test.cpp"],
-    cflags: ["-DLIBNAME=\"libbar.product1.so\""],
-    product_specific: true,
-    shared_libs: [
-        "libbase",
-    ],
-}
-
-// Build the test for the C API.
-cc_test {
-    name: "libnativeloader-api-tests",
-    host_supported: true,
-    test_per_src: true,
-    srcs: [
-        "api_test.c",
-    ],
-    header_libs: ["libnativeloader-headers"],
-}
diff --git a/libnativeloader/test/Android.mk b/libnativeloader/test/Android.mk
deleted file mode 100644
index 65e7b09..0000000
--- a/libnativeloader/test/Android.mk
+++ /dev/null
@@ -1,57 +0,0 @@
-#
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := public.libraries-oem1.txt
-LOCAL_SRC_FILES:= $(LOCAL_MODULE)
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
-include $(BUILD_PREBUILT)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := public.libraries-oem2.txt
-LOCAL_SRC_FILES:= $(LOCAL_MODULE)
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
-include $(BUILD_PREBUILT)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := public.libraries-product1.txt
-LOCAL_SRC_FILES:= $(LOCAL_MODULE)
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_PRODUCT_ETC)
-include $(BUILD_PREBUILT)
-
-include $(CLEAR_VARS)
-LOCAL_PACKAGE_NAME := oemlibrarytest-system
-LOCAL_MODULE_TAGS := tests
-LOCAL_MANIFEST_FILE := system/AndroidManifest.xml
-LOCAL_SRC_FILES := $(call all-java-files-under, src)
-LOCAL_SDK_VERSION := current
-LOCAL_PROGUARD_ENABLED := disabled
-LOCAL_MODULE_PATH := $(TARGET_OUT_APPS)
-include $(BUILD_PACKAGE)
-
-include $(CLEAR_VARS)
-LOCAL_PACKAGE_NAME := oemlibrarytest-vendor
-LOCAL_MODULE_TAGS := tests
-LOCAL_MANIFEST_FILE := vendor/AndroidManifest.xml
-LOCAL_SRC_FILES := $(call all-java-files-under, src)
-LOCAL_SDK_VERSION := current
-LOCAL_PROGUARD_ENABLED := disabled
-LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_APPS)
-include $(BUILD_PACKAGE)
diff --git a/libnativeloader/test/api_test.c b/libnativeloader/test/api_test.c
deleted file mode 100644
index e7025fd..0000000
--- a/libnativeloader/test/api_test.c
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* The main purpose of this test is to ensure this C header compiles in C, so
- * that no C++ features inadvertently leak into the C ABI. */
-#include "nativeloader/native_loader.h"
-
-int main(int argc, char** argv) {
-  (void)argc;
-  (void)argv;
-  return 0;
-}
diff --git a/libnativeloader/test/public.libraries-oem1.txt b/libnativeloader/test/public.libraries-oem1.txt
deleted file mode 100644
index f9433e2..0000000
--- a/libnativeloader/test/public.libraries-oem1.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-libfoo.oem1.so
-libbar.oem1.so
diff --git a/libnativeloader/test/public.libraries-oem2.txt b/libnativeloader/test/public.libraries-oem2.txt
deleted file mode 100644
index de6bdb0..0000000
--- a/libnativeloader/test/public.libraries-oem2.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-libfoo.oem2.so
-libbar.oem2.so
diff --git a/libnativeloader/test/public.libraries-product1.txt b/libnativeloader/test/public.libraries-product1.txt
deleted file mode 100644
index 358154c..0000000
--- a/libnativeloader/test/public.libraries-product1.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-libfoo.product1.so
-libbar.product1.so
diff --git a/libnativeloader/test/runtest.sh b/libnativeloader/test/runtest.sh
deleted file mode 100755
index 40beb5b..0000000
--- a/libnativeloader/test/runtest.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-adb root
-adb remount
-adb sync
-adb shell stop
-adb shell start
-sleep 5 # wait until device reboots
-adb logcat -c;
-adb shell am start -n android.test.app.system/android.test.app.TestActivity
-adb shell am start -n android.test.app.vendor/android.test.app.TestActivity
-adb logcat | grep android.test.app
diff --git a/libnativeloader/test/src/android/test/app/TestActivity.java b/libnativeloader/test/src/android/test/app/TestActivity.java
deleted file mode 100644
index a7a455d..0000000
--- a/libnativeloader/test/src/android/test/app/TestActivity.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.test.app;
-
-import android.app.Activity;
-import android.os.Bundle;
-import android.util.Log;
-
-public class TestActivity extends Activity {
-
-    @Override
-    public void onCreate(Bundle icicle) {
-         super.onCreate(icicle);
-         tryLoadingLib("foo.oem1");
-         tryLoadingLib("bar.oem1");
-         tryLoadingLib("foo.oem2");
-         tryLoadingLib("bar.oem2");
-         tryLoadingLib("foo.product1");
-         tryLoadingLib("bar.product1");
-    }
-
-    private void tryLoadingLib(String name) {
-        try {
-            System.loadLibrary(name);
-            Log.d(getPackageName(), "library " + name + " is successfully loaded");
-        } catch (UnsatisfiedLinkError e) {
-            Log.d(getPackageName(), "failed to load libarary " + name, e);
-        }
-    }
-}
diff --git a/libnativeloader/test/system/AndroidManifest.xml b/libnativeloader/test/system/AndroidManifest.xml
deleted file mode 100644
index c304889..0000000
--- a/libnativeloader/test/system/AndroidManifest.xml
+++ /dev/null
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- -->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="android.test.app.system">
-
-    <application>
-        <activity android:name="android.test.app.TestActivity" >
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
-    </application>
-
-</manifest>
-
diff --git a/libnativeloader/test/test.cpp b/libnativeloader/test/test.cpp
deleted file mode 100644
index b166928..0000000
--- a/libnativeloader/test/test.cpp
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#define LOG_TAG "oemlib"
-#include <android-base/logging.h>
-
-static __attribute__((constructor)) void test_lib_init() {
-  LOG(DEBUG) << LIBNAME << " loaded";
-}
diff --git a/libnativeloader/test/vendor/AndroidManifest.xml b/libnativeloader/test/vendor/AndroidManifest.xml
deleted file mode 100644
index c4c1a9c..0000000
--- a/libnativeloader/test/vendor/AndroidManifest.xml
+++ /dev/null
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- -->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="android.test.app.vendor">
-
-    <application>
-        <activity android:name="android.test.app.TestActivity" >
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
-    </application>
-
-</manifest>
-
diff --git a/libnetutils/ifc_utils.c b/libnetutils/ifc_utils.c
index a098d59..5999e39 100644
--- a/libnetutils/ifc_utils.c
+++ b/libnetutils/ifc_utils.c
@@ -113,6 +113,10 @@
     if (ret == 0) {
         memcpy(ss, ai->ai_addr, ai->ai_addrlen);
         freeaddrinfo(ai);
+    } else {
+        // Getaddrinfo has its own error codes. Convert to negative errno.
+        // There, the only thing that can reasonably happen is that the passed-in string is invalid.
+        ret = (ret == EAI_SYSTEM) ? -errno : -EINVAL;
     }
 
     return ret;
@@ -253,8 +257,8 @@
  *
  * Returns zero on success and negative errno on failure.
  */
-int ifc_act_on_address(int action, const char *name, const char *address,
-                       int prefixlen) {
+int ifc_act_on_address(int action, const char* name, const char* address, int prefixlen,
+                       bool nodad) {
     int ifindex, s, len, ret;
     struct sockaddr_storage ss;
     int saved_errno;
@@ -263,19 +267,13 @@
     struct {
         struct nlmsghdr n;
         struct ifaddrmsg r;
-        // Allow for IPv6 address, headers, IPv4 broadcast addr and padding.
-        char attrbuf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
-                     NLMSG_ALIGN(sizeof(struct rtattr)) +
-                     NLMSG_ALIGN(INET6_ADDRLEN) +
-                     NLMSG_ALIGN(sizeof(struct rtattr)) +
-                     NLMSG_ALIGN(INET_ADDRLEN)];
+        // Allow for IPv4 or IPv6 address, headers, IPv4 broadcast address and padding.
+        char attrbuf[NLMSG_ALIGN(sizeof(struct rtattr)) + NLMSG_ALIGN(INET6_ADDRLEN) +
+                     NLMSG_ALIGN(sizeof(struct rtattr)) + NLMSG_ALIGN(INET_ADDRLEN)];
     } req;
     struct rtattr *rta;
     struct nlmsghdr *nh;
     struct nlmsgerr *err;
-    char buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
-             NLMSG_ALIGN(sizeof(struct nlmsgerr)) +
-             NLMSG_ALIGN(sizeof(struct nlmsghdr))];
 
     // Get interface ID.
     ifindex = if_nametoindex(name);
@@ -313,6 +311,7 @@
 
     // Interface address message header.
     req.r.ifa_family = ss.ss_family;
+    req.r.ifa_flags = nodad ? IFA_F_NODAD : 0;
     req.r.ifa_prefixlen = prefixlen;
     req.r.ifa_index = ifindex;
 
@@ -344,6 +343,7 @@
         return -saved_errno;
     }
 
+    char buf[NLMSG_ALIGN(sizeof(struct nlmsgerr)) + sizeof(req)];
     len = recv(s, buf, sizeof(buf), 0);
     saved_errno = errno;
     close(s);
@@ -362,12 +362,14 @@
     return err->error;
 }
 
+// Returns zero on success and negative errno on failure.
 int ifc_add_address(const char *name, const char *address, int prefixlen) {
-    return ifc_act_on_address(RTM_NEWADDR, name, address, prefixlen);
+    return ifc_act_on_address(RTM_NEWADDR, name, address, prefixlen, /*nodad*/ false);
 }
 
+// Returns zero on success and negative errno on failure.
 int ifc_del_address(const char *name, const char * address, int prefixlen) {
-    return ifc_act_on_address(RTM_DELADDR, name, address, prefixlen);
+    return ifc_act_on_address(RTM_DELADDR, name, address, prefixlen, /*nodad*/ false);
 }
 
 /*
diff --git a/libnetutils/include/netutils/ifc.h b/libnetutils/include/netutils/ifc.h
index 3b27234..ee896ac 100644
--- a/libnetutils/include/netutils/ifc.h
+++ b/libnetutils/include/netutils/ifc.h
@@ -17,8 +17,9 @@
 #ifndef _NETUTILS_IFC_H_
 #define _NETUTILS_IFC_H_
 
-#include <sys/cdefs.h>
 #include <arpa/inet.h>
+#include <stdbool.h>
+#include <sys/cdefs.h>
 
 __BEGIN_DECLS
 
@@ -42,6 +43,8 @@
 
 extern int ifc_get_addr(const char *name, in_addr_t *addr);
 extern int ifc_set_addr(const char *name, in_addr_t addr);
+extern int ifc_act_on_address(int action, const char* name, const char* address, int prefixlen,
+                              bool nodad);
 extern int ifc_add_address(const char *name, const char *address,
                            int prefixlen);
 extern int ifc_del_address(const char *name, const char *address,
diff --git a/libnetutils/packet.c b/libnetutils/packet.c
index 9ecdd4f..64de00e 100644
--- a/libnetutils/packet.c
+++ b/libnetutils/packet.c
@@ -37,25 +37,22 @@
 
 #include "dhcpmsg.h"
 
-int fatal();
+int fatal(const char*);
 
-int open_raw_socket(const char *ifname __attribute__((unused)), uint8_t *hwaddr, int if_index)
-{
-    int s;
-    struct sockaddr_ll bindaddr;
+int open_raw_socket(const char* ifname __unused, uint8_t hwaddr[ETH_ALEN], int if_index) {
+    int s = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+    if (s < 0) return fatal("socket(PF_PACKET)");
 
-    if((s = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) {
-        return fatal("socket(PF_PACKET)");
-    }
-
-    memset(&bindaddr, 0, sizeof(bindaddr));
-    bindaddr.sll_family = AF_PACKET;
-    bindaddr.sll_protocol = htons(ETH_P_IP);
-    bindaddr.sll_halen = ETH_ALEN;
+    struct sockaddr_ll bindaddr = {
+            .sll_family = AF_PACKET,
+            .sll_protocol = htons(ETH_P_IP),
+            .sll_ifindex = if_index,
+            .sll_halen = ETH_ALEN,
+    };
     memcpy(bindaddr.sll_addr, hwaddr, ETH_ALEN);
-    bindaddr.sll_ifindex = if_index;
 
     if (bind(s, (struct sockaddr *)&bindaddr, sizeof(bindaddr)) < 0) {
+        close(s);
         return fatal("Cannot bind raw socket to interface");
     }
 
diff --git a/libnetutils/packet.h b/libnetutils/packet.h
index aade392..66186fc 100644
--- a/libnetutils/packet.h
+++ b/libnetutils/packet.h
@@ -17,7 +17,9 @@
 #ifndef _WIFI_PACKET_H_
 #define _WIFI_PACKET_H_
 
-int open_raw_socket(const char *ifname, uint8_t *hwaddr, int if_index);
+#include <linux/if_ether.h>
+
+int open_raw_socket(const char* ifname, uint8_t hwaddr[ETH_ALEN], int if_index);
 int send_packet(int s, int if_index, struct dhcp_msg *msg, int size,
                 uint32_t saddr, uint32_t daddr, uint32_t sport, uint32_t dport);
 int receive_packet(int s, struct dhcp_msg *msg);
diff --git a/libnativeloader/.clang-format b/libpackagelistparser/.clang-format
similarity index 100%
rename from libnativeloader/.clang-format
rename to libpackagelistparser/.clang-format
diff --git a/libpackagelistparser/Android.bp b/libpackagelistparser/Android.bp
index c38594a..b56dcdb 100644
--- a/libpackagelistparser/Android.bp
+++ b/libpackagelistparser/Android.bp
@@ -1,12 +1,7 @@
 cc_library {
-
     name: "libpackagelistparser",
     recovery_available: true,
-    srcs: ["packagelistparser.c"],
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
+    srcs: ["packagelistparser.cpp"],
     shared_libs: ["liblog"],
     local_include_dirs: ["include"],
     export_include_dirs: ["include"],
@@ -15,3 +10,14 @@
         misc_undefined: ["integer"],
     },
 }
+
+cc_test {
+    name: "libpackagelistparser_test",
+    srcs: ["packagelistparser_test.cpp"],
+    shared_libs: [
+        "libbase",
+        "libpackagelistparser",
+    ],
+    test_suites: ["device-tests"],
+    require_root: true,
+}
diff --git a/libpackagelistparser/include/packagelistparser/packagelistparser.h b/libpackagelistparser/include/packagelistparser/packagelistparser.h
index 3cb6b9a..e89cb54 100644
--- a/libpackagelistparser/include/packagelistparser/packagelistparser.h
+++ b/libpackagelistparser/include/packagelistparser/packagelistparser.h
@@ -1,94 +1,81 @@
 /*
- * Copyright 2015, Intel Corporation
- * Copyright (C) 2015 The Android Open Source Project
+ * Copyright (C) 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Written by William Roberts <william.c.roberts@intel.com>
- *
- * This is a parser library for parsing the packages.list file generated
- * by PackageManager service.
- *
- * This simple parser is sensitive to format changes in
- * frameworks/base/services/core/java/com/android/server/pm/Settings.java
- * A dependency note has been added to that file to correct
- * this parser.
  */
 
-#ifndef PACKAGELISTPARSER_H_
-#define PACKAGELISTPARSER_H_
+#pragma once
 
 #include <stdbool.h>
-#include <sys/cdefs.h>
 #include <sys/types.h>
 
 __BEGIN_DECLS
 
-/** The file containing the list of installed packages on the system */
-#define PACKAGES_LIST_FILE  "/data/system/packages.list"
+typedef struct gid_list {
+  /** Number of gids. */
+  size_t cnt;
 
-typedef struct pkg_info pkg_info;
-typedef struct gid_list gid_list;
+  /** Array of gids. */
+  gid_t* gids;
+} gid_list;
 
-struct gid_list {
-    size_t cnt;
-    gid_t *gids;
-};
+typedef struct pkg_info {
+  /** Package name like "com.android.blah". */
+  char* name;
 
-struct pkg_info {
-    char *name;
-    uid_t uid;
-    bool debuggable;
-    char *data_dir;
-    char *seinfo;
-    gid_list gids;
-    void *private_data;
-    bool profileable_from_shell;
-    long version_code;
-};
+  /** Package uid like 10014. */
+  uid_t uid;
+
+  /** Package's AndroidManifest.xml debuggable flag. */
+  bool debuggable;
+
+  /** Package data directory like "/data/user/0/com.android.blah" */
+  char* data_dir;
+
+  /** Package SELinux info. */
+  char* seinfo;
+
+  /** Package's list of gids. */
+  gid_list gids;
+
+  /** Spare pointer for the caller to stash extra data off. */
+  void* private_data;
+
+  /** Package's AndroidManifest.xml profileable flag. */
+  bool profileable_from_shell;
+
+  /** Package's AndroidManifest.xml version code. */
+  long version_code;
+} pkg_info;
 
 /**
- * Callback function to be used by packagelist_parse() routine.
- * @param info
- *  The parsed package information
- * @param userdata
- *  The supplied userdata pointer to packagelist_parse()
- * @return
- *  true to keep processing, false to stop.
+ * Parses the system's default package list.
+ * Invokes `callback` once for each package.
+ * The callback owns the `pkg_info*` and should call packagelist_free().
+ * The callback should return `false` to exit early or `true` to continue.
  */
-typedef bool (*pfn_on_package)(pkg_info *info, void *userdata);
+bool packagelist_parse(bool (*callback)(pkg_info* info, void* user_data), void* user_data);
 
 /**
- * Parses the file specified by PACKAGES_LIST_FILE and invokes the callback on
- * each entry found. Once the callback is invoked, ownership of the pkg_info pointer
- * is passed to the callback routine, thus they are required to perform any cleanup
- * desired.
- * @param callback
- *  The callback function called on each parsed line of the packages list.
- * @param userdata
- *  An optional userdata supplied pointer to pass to the callback function.
- * @return
- *  true on success false on failure.
+ * Parses the given package list.
+ * Invokes `callback` once for each package.
+ * The callback owns the `pkg_info*` and should call packagelist_free().
+ * The callback should return `false` to exit early or `true` to continue.
  */
-extern bool packagelist_parse(pfn_on_package callback, void *userdata);
+bool packagelist_parse_file(const char* path, bool (*callback)(pkg_info* info, void* user_data),
+                            void* user_data);
 
-/**
- * Frees a pkg_info structure.
- * @param info
- *  The struct to free
- */
-extern void packagelist_free(pkg_info *info);
+/** Frees the given `pkg_info`. */
+void packagelist_free(pkg_info* info);
 
 __END_DECLS
-
-#endif /* PACKAGELISTPARSER_H_ */
diff --git a/libpackagelistparser/packagelistparser.c b/libpackagelistparser/packagelistparser.c
deleted file mode 100644
index edc533c..0000000
--- a/libpackagelistparser/packagelistparser.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- * Copyright 2015, Intel Corporation
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Written by William Roberts <william.c.roberts@intel.com>
- *
- */
-
-#define LOG_TAG "packagelistparser"
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/limits.h>
-
-#include <log/log.h>
-#include <packagelistparser/packagelistparser.h>
-
-#define CLOGE(fmt, ...) \
-    do {\
-        IF_ALOGE() {\
-            ALOGE(fmt, ##__VA_ARGS__);\
-        }\
-    } while(0)
-
-static size_t get_gid_cnt(const char *gids)
-{
-    size_t cnt;
-
-    if (*gids == '\0') {
-        return 0;
-    }
-
-    if (!strcmp(gids, "none")) {
-        return 0;
-    }
-
-    for (cnt = 1; gids[cnt]; gids[cnt] == ',' ? cnt++ : *gids++)
-        ;
-
-    return cnt;
-}
-
-static bool parse_gids(char *gids, gid_t *gid_list, size_t *cnt)
-{
-    gid_t gid;
-    char* token;
-    char *endptr;
-    size_t cmp = 0;
-
-    while ((token = strsep(&gids, ",\r\n"))) {
-
-        if (cmp > *cnt) {
-            return false;
-        }
-
-        gid = strtoul(token, &endptr, 10);
-        if (*endptr != '\0') {
-            return false;
-        }
-
-        /*
-         * if unsigned long is greater than size of gid_t,
-         * prevent a truncation based roll-over
-         */
-        if (gid > GID_MAX) {
-            CLOGE("A gid in field \"gid list\" greater than GID_MAX");
-            return false;
-        }
-
-        gid_list[cmp++] = gid;
-    }
-    return true;
-}
-
-extern bool packagelist_parse(pfn_on_package callback, void *userdata)
-{
-
-    FILE *fp;
-    char *cur;
-    char *next;
-    char *endptr;
-    unsigned long tmp;
-    ssize_t bytesread;
-
-    bool rc = false;
-    char *buf = NULL;
-    size_t buflen = 0;
-    unsigned long lineno = 1;
-    const char *errmsg = NULL;
-    struct pkg_info *pkg_info = NULL;
-
-    fp = fopen(PACKAGES_LIST_FILE, "re");
-    if (!fp) {
-        CLOGE("Could not open: \"%s\", error: \"%s\"\n", PACKAGES_LIST_FILE,
-                strerror(errno));
-        return false;
-    }
-
-    while ((bytesread = getline(&buf, &buflen, fp)) > 0) {
-
-        pkg_info = calloc(1, sizeof(*pkg_info));
-        if (!pkg_info) {
-            goto err;
-        }
-
-        next = buf;
-
-        cur = strsep(&next, " \t\r\n");
-        if (!cur) {
-            errmsg = "Could not get next token for \"package name\"";
-            goto err;
-        }
-
-        pkg_info->name = strdup(cur);
-        if (!pkg_info->name) {
-            goto err;
-        }
-
-        cur = strsep(&next, " \t\r\n");
-        if (!cur) {
-            errmsg = "Could not get next token for field \"uid\"";
-            goto err;
-        }
-
-        tmp = strtoul(cur, &endptr, 10);
-        if (*endptr != '\0') {
-            errmsg = "Could not convert field \"uid\" to integer value";
-            goto err;
-        }
-
-        /*
-         * if unsigned long is greater than size of uid_t,
-         * prevent a truncation based roll-over
-         */
-        if (tmp > UID_MAX) {
-            errmsg = "Field \"uid\" greater than UID_MAX";
-            goto err;
-        }
-
-        pkg_info->uid = (uid_t) tmp;
-
-        cur = strsep(&next, " \t\r\n");
-        if (!cur) {
-            errmsg = "Could not get next token for field \"debuggable\"";
-            goto err;
-        }
-
-        tmp = strtoul(cur, &endptr, 10);
-        if (*endptr != '\0') {
-            errmsg = "Could not convert field \"debuggable\" to integer value";
-            goto err;
-        }
-
-        /* should be a valid boolean of 1 or 0 */
-        if (!(tmp == 0 || tmp == 1)) {
-            errmsg = "Field \"debuggable\" is not 0 or 1 boolean value";
-            goto err;
-        }
-
-        pkg_info->debuggable = (bool) tmp;
-
-        cur = strsep(&next, " \t\r\n");
-        if (!cur) {
-            errmsg = "Could not get next token for field \"data dir\"";
-            goto err;
-        }
-
-        pkg_info->data_dir = strdup(cur);
-        if (!pkg_info->data_dir) {
-            goto err;
-        }
-
-        cur = strsep(&next, " \t\r\n");
-        if (!cur) {
-            errmsg = "Could not get next token for field \"seinfo\"";
-            goto err;
-        }
-
-        pkg_info->seinfo = strdup(cur);
-        if (!pkg_info->seinfo) {
-            goto err;
-        }
-
-        cur = strsep(&next, " \t\r\n");
-        if (!cur) {
-            errmsg = "Could not get next token for field \"gid(s)\"";
-            goto err;
-        }
-
-        /*
-         * Parse the gid list, could be in the form of none, single gid or list:
-         * none
-         * gid
-         * gid, gid ...
-         */
-        pkg_info->gids.cnt = get_gid_cnt(cur);
-        if (pkg_info->gids.cnt > 0) {
-
-            pkg_info->gids.gids = calloc(pkg_info->gids.cnt, sizeof(gid_t));
-            if (!pkg_info->gids.gids) {
-                goto err;
-            }
-
-            rc = parse_gids(cur, pkg_info->gids.gids, &pkg_info->gids.cnt);
-            if (!rc) {
-                errmsg = "Could not parse field \"gid list\"";
-                goto err;
-            }
-        }
-
-        cur = strsep(&next, " \t\r\n");
-        if (cur) {
-            tmp = strtoul(cur, &endptr, 10);
-            if (*endptr != '\0') {
-                errmsg = "Could not convert field \"profileable_from_shell\" to integer value";
-                goto err;
-            }
-
-            /* should be a valid boolean of 1 or 0 */
-            if (!(tmp == 0 || tmp == 1)) {
-                errmsg = "Field \"profileable_from_shell\" is not 0 or 1 boolean value";
-                goto err;
-            }
-
-            pkg_info->profileable_from_shell = (bool)tmp;
-        }
-        cur = strsep(&next, " \t\r\n");
-        if (cur) {
-            tmp = strtoul(cur, &endptr, 10);
-            if (*endptr != '\0') {
-                errmsg = "Could not convert field \"versionCode\" to integer value";
-                goto err;
-            }
-            pkg_info->version_code = tmp;
-        }
-
-        rc = callback(pkg_info, userdata);
-        if (rc == false) {
-            /*
-             * We do not log this as this can be intentional from
-             * callback to abort processing. We go to out to not
-             * free the pkg_info
-             */
-            rc = true;
-            goto out;
-        }
-        lineno++;
-    }
-
-    rc = true;
-
-out:
-    free(buf);
-    fclose(fp);
-    return rc;
-
-err:
-    if (errmsg) {
-        CLOGE("Error Parsing \"%s\" on line: %lu for reason: %s",
-                PACKAGES_LIST_FILE, lineno, errmsg);
-    }
-    rc = false;
-    packagelist_free(pkg_info);
-    goto out;
-}
-
-void packagelist_free(pkg_info *info)
-{
-    if (info) {
-        free(info->name);
-        free(info->data_dir);
-        free(info->seinfo);
-        free(info->gids.gids);
-        free(info);
-    }
-}
diff --git a/libpackagelistparser/packagelistparser.cpp b/libpackagelistparser/packagelistparser.cpp
new file mode 100644
index 0000000..59c3a74
--- /dev/null
+++ b/libpackagelistparser/packagelistparser.cpp
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "packagelistparser"
+
+#include <packagelistparser/packagelistparser.h>
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/limits.h>
+
+#include <memory>
+
+#include <log/log.h>
+
+static bool parse_gids(const char* path, size_t line_number, const char* gids, pkg_info* info) {
+  // Nothing to do?
+  if (!gids || !strcmp(gids, "none")) return true;
+
+  // How much space do we need?
+  info->gids.cnt = 1;
+  for (const char* p = gids; *p; ++p) {
+    if (*p == ',') ++info->gids.cnt;
+  }
+
+  // Allocate the space.
+  info->gids.gids = new gid_t[info->gids.cnt];
+  if (!info->gids.gids) return false;
+
+  // And parse the individual gids.
+  size_t i = 0;
+  while (true) {
+    char* end;
+    unsigned long gid = strtoul(gids, &end, 10);
+    if (gid > GID_MAX) {
+      ALOGE("%s:%zu: gid %lu > GID_MAX", path, line_number, gid);
+      return false;
+    }
+
+    if (i >= info->gids.cnt) return false;
+    info->gids.gids[i++] = gid;
+
+    if (*end == '\0') return true;
+    if (*end != ',') return false;
+    gids = end + 1;
+  }
+  return true;
+}
+
+static bool parse_line(const char* path, size_t line_number, const char* line, pkg_info* info) {
+  unsigned long uid;
+  int debuggable;
+  char* gid_list;
+  int profileable_from_shell = 0;
+
+  int fields =
+      sscanf(line, "%ms %lu %d %ms %ms %ms %d %ld", &info->name, &uid, &debuggable, &info->data_dir,
+             &info->seinfo, &gid_list, &profileable_from_shell, &info->version_code);
+
+  // Handle the more complicated gids field and free the temporary string.
+  bool gids_okay = parse_gids(path, line_number, gid_list, info);
+  free(gid_list);
+  if (!gids_okay) return false;
+
+  // Did we see enough fields to be getting on with?
+  // The final fields are optional (and not usually present).
+  if (fields < 6) {
+    ALOGE("%s:%zu: too few fields in line", path, line_number);
+    return false;
+  }
+
+  // Extra validation.
+  if (uid > UID_MAX) {
+    ALOGE("%s:%zu: uid %lu > UID_MAX", path, line_number, uid);
+    return false;
+  }
+  info->uid = uid;
+
+  // Integer to bool conversions.
+  info->debuggable = debuggable;
+  info->profileable_from_shell = profileable_from_shell;
+
+  return true;
+}
+
+bool packagelist_parse_file(const char* path, bool (*callback)(pkg_info*, void*), void* user_data) {
+  std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(path, "re"), &fclose);
+  if (!fp) {
+    ALOGE("couldn't open '%s': %s", path, strerror(errno));
+    return false;
+  }
+
+  size_t line_number = 0;
+  char* line = nullptr;
+  size_t allocated_length = 0;
+  while (getline(&line, &allocated_length, fp.get()) > 0) {
+    ++line_number;
+    std::unique_ptr<pkg_info, decltype(&packagelist_free)> info(
+        static_cast<pkg_info*>(calloc(1, sizeof(pkg_info))), &packagelist_free);
+    if (!info) {
+      ALOGE("%s:%zu: couldn't allocate pkg_info", path, line_number);
+      return false;
+    }
+
+    if (!parse_line(path, line_number, line, info.get())) return false;
+
+    if (!callback(info.release(), user_data)) break;
+  }
+  free(line);
+  return true;
+}
+
+bool packagelist_parse(bool (*callback)(pkg_info*, void*), void* user_data) {
+  return packagelist_parse_file("/data/system/packages.list", callback, user_data);
+}
+
+void packagelist_free(pkg_info* info) {
+  if (!info) return;
+
+  free(info->name);
+  free(info->data_dir);
+  free(info->seinfo);
+  delete[] info->gids.gids;
+  free(info);
+}
diff --git a/libpackagelistparser/packagelistparser_test.cpp b/libpackagelistparser/packagelistparser_test.cpp
new file mode 100644
index 0000000..76cb886
--- /dev/null
+++ b/libpackagelistparser/packagelistparser_test.cpp
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <packagelistparser/packagelistparser.h>
+
+#include <memory>
+
+#include <android-base/file.h>
+
+#include <gtest/gtest.h>
+
+TEST(packagelistparser, smoke) {
+  TemporaryFile tf;
+  android::base::WriteStringToFile(
+      // No gids.
+      "com.test.a0 10014 0 /data/user/0/com.test.a0 platform:privapp:targetSdkVersion=19 none\n"
+      // One gid.
+      "com.test.a1 10007 1 /data/user/0/com.test.a1 platform:privapp:targetSdkVersion=21 1023\n"
+      // Multiple gids.
+      "com.test.a2 10011 0 /data/user/0/com.test.a2 media:privapp:targetSdkVersion=30 "
+      "2001,1065,1023,3003,3007,1024\n"
+      // The two new fields (profileable flag and version code).
+      "com.test.a3 10022 0 /data/user/0/com.test.a3 selabel:blah none 1 123\n",
+      tf.path);
+
+  std::vector<pkg_info*> packages;
+  packagelist_parse_file(
+      tf.path,
+      [](pkg_info* info, void* user_data) -> bool {
+        reinterpret_cast<std::vector<pkg_info*>*>(user_data)->push_back(info);
+        return true;
+      },
+      &packages);
+
+  ASSERT_EQ(4U, packages.size());
+
+  ASSERT_STREQ("com.test.a0", packages[0]->name);
+  ASSERT_EQ(10014, packages[0]->uid);
+  ASSERT_FALSE(packages[0]->debuggable);
+  ASSERT_STREQ("/data/user/0/com.test.a0", packages[0]->data_dir);
+  ASSERT_STREQ("platform:privapp:targetSdkVersion=19", packages[0]->seinfo);
+  ASSERT_EQ(0U, packages[0]->gids.cnt);
+  ASSERT_FALSE(packages[0]->profileable_from_shell);
+  ASSERT_EQ(0, packages[0]->version_code);
+
+  ASSERT_STREQ("com.test.a1", packages[1]->name);
+  ASSERT_EQ(10007, packages[1]->uid);
+  ASSERT_TRUE(packages[1]->debuggable);
+  ASSERT_STREQ("/data/user/0/com.test.a1", packages[1]->data_dir);
+  ASSERT_STREQ("platform:privapp:targetSdkVersion=21", packages[1]->seinfo);
+  ASSERT_EQ(1U, packages[1]->gids.cnt);
+  ASSERT_EQ(1023U, packages[1]->gids.gids[0]);
+  ASSERT_FALSE(packages[0]->profileable_from_shell);
+  ASSERT_EQ(0, packages[0]->version_code);
+
+  ASSERT_STREQ("com.test.a2", packages[2]->name);
+  ASSERT_EQ(10011, packages[2]->uid);
+  ASSERT_FALSE(packages[2]->debuggable);
+  ASSERT_STREQ("/data/user/0/com.test.a2", packages[2]->data_dir);
+  ASSERT_STREQ("media:privapp:targetSdkVersion=30", packages[2]->seinfo);
+  ASSERT_EQ(6U, packages[2]->gids.cnt);
+  ASSERT_EQ(2001U, packages[2]->gids.gids[0]);
+  ASSERT_EQ(1024U, packages[2]->gids.gids[5]);
+  ASSERT_FALSE(packages[0]->profileable_from_shell);
+  ASSERT_EQ(0, packages[0]->version_code);
+
+  ASSERT_STREQ("com.test.a3", packages[3]->name);
+  ASSERT_EQ(10022, packages[3]->uid);
+  ASSERT_FALSE(packages[3]->debuggable);
+  ASSERT_STREQ("/data/user/0/com.test.a3", packages[3]->data_dir);
+  ASSERT_STREQ("selabel:blah", packages[3]->seinfo);
+  ASSERT_EQ(0U, packages[3]->gids.cnt);
+  ASSERT_TRUE(packages[3]->profileable_from_shell);
+  ASSERT_EQ(123, packages[3]->version_code);
+
+  for (auto& package : packages) packagelist_free(package);
+}
+
+TEST(packagelistparser, early_exit) {
+  TemporaryFile tf;
+  android::base::WriteStringToFile(
+      "com.test.a0 1 0 / a none\n"
+      "com.test.a1 1 0 / a none\n"
+      "com.test.a2 1 0 / a none\n",
+      tf.path);
+
+  std::vector<pkg_info*> packages;
+  packagelist_parse_file(
+      tf.path,
+      [](pkg_info* info, void* user_data) -> bool {
+        std::vector<pkg_info*>* p = reinterpret_cast<std::vector<pkg_info*>*>(user_data);
+        p->push_back(info);
+        return p->size() < 2;
+      },
+      &packages);
+
+  ASSERT_EQ(2U, packages.size());
+
+  ASSERT_STREQ("com.test.a0", packages[0]->name);
+  ASSERT_STREQ("com.test.a1", packages[1]->name);
+
+  for (auto& package : packages) packagelist_free(package);
+}
+
+TEST(packagelistparser, system_package_list) {
+  // Check that we can actually read the packages.list installed on the device.
+  std::vector<pkg_info*> packages;
+  packagelist_parse(
+      [](pkg_info* info, void* user_data) -> bool {
+        reinterpret_cast<std::vector<pkg_info*>*>(user_data)->push_back(info);
+        return true;
+      },
+      &packages);
+  // Not much we can say for sure about what we expect, other than that there
+  // are likely to be lots of packages...
+  ASSERT_GT(packages.size(), 10U);
+}
+
+TEST(packagelistparser, packagelist_free_nullptr) {
+  packagelist_free(nullptr);
+}
diff --git a/libpixelflinger/Android.bp b/libpixelflinger/Android.bp
deleted file mode 100644
index 76d9444..0000000
--- a/libpixelflinger/Android.bp
+++ /dev/null
@@ -1,115 +0,0 @@
-cc_defaults {
-    name: "pixelflinger_defaults",
-
-    cflags: [
-        "-fstrict-aliasing",
-        "-fomit-frame-pointer",
-        "-Wall",
-        "-Werror",
-        "-Wno-unused-function",
-    ],
-    export_include_dirs: ["include"],
-    header_libs: ["libbase_headers"],
-    shared_libs: [
-        "libcutils",
-        "liblog",
-        "libutils",
-    ],
-
-    arch: {
-        arm: {
-            neon: {
-                cflags: ["-D__ARM_HAVE_NEON"],
-            },
-        },
-    },
-}
-
-cc_library_static {
-    name: "libpixelflinger-arm",
-    defaults: ["pixelflinger_defaults"],
-
-    srcs: [
-        "fixed.cpp",
-        "picker.cpp",
-        "pixelflinger.cpp",
-        "trap.cpp",
-        "scanline.cpp",
-    ],
-
-    arch: {
-        arm: {
-            instruction_set: "arm",
-        },
-    },
-}
-
-// For the tests to use
-cc_library_headers {
-    name: "libpixelflinger_internal",
-    export_include_dirs: [
-        "include",
-        ".",
-    ],
-}
-
-cc_library {
-    name: "libpixelflinger",
-    defaults: ["pixelflinger_defaults"],
-
-    srcs: [
-        "codeflinger/ARMAssemblerInterface.cpp",
-        "codeflinger/ARMAssemblerProxy.cpp",
-        "codeflinger/CodeCache.cpp",
-        "codeflinger/GGLAssembler.cpp",
-        "codeflinger/load_store.cpp",
-        "codeflinger/blending.cpp",
-        "codeflinger/texturing.cpp",
-        "format.cpp",
-        "clear.cpp",
-        "raster.cpp",
-        "buffer.cpp",
-    ],
-    whole_static_libs: ["libpixelflinger-arm"],
-
-    arch: {
-        arm: {
-            srcs: [
-                "codeflinger/ARMAssembler.cpp",
-                "codeflinger/disassem.c",
-                "col32cb16blend.S",
-                "t32cb16blend.S",
-            ],
-
-            neon: {
-                srcs: ["col32cb16blend_neon.S"],
-            },
-        },
-        arm64: {
-            srcs: [
-                "codeflinger/Arm64Assembler.cpp",
-                "codeflinger/Arm64Disassembler.cpp",
-                "arch-arm64/col32cb16blend.S",
-                "arch-arm64/t32cb16blend.S",
-            ],
-        },
-        mips: {
-            mips32r6: {
-                srcs: [
-                    "codeflinger/MIPSAssembler.cpp",
-                    "codeflinger/mips_disassem.c",
-                    "arch-mips/t32cb16blend.S",
-                ],
-            },
-        },
-        mips64: {
-            srcs: [
-                "codeflinger/MIPSAssembler.cpp",
-                "codeflinger/MIPS64Assembler.cpp",
-                "codeflinger/mips64_disassem.c",
-                "arch-mips64/col32cb16blend.S",
-                "arch-mips64/t32cb16blend.S",
-            ],
-        },
-    },
-}
diff --git a/libpixelflinger/MODULE_LICENSE_APACHE2 b/libpixelflinger/MODULE_LICENSE_APACHE2
deleted file mode 100644
index e69de29..0000000
--- a/libpixelflinger/MODULE_LICENSE_APACHE2
+++ /dev/null
diff --git a/libpixelflinger/NOTICE b/libpixelflinger/NOTICE
deleted file mode 100644
index c5b1efa..0000000
--- a/libpixelflinger/NOTICE
+++ /dev/null
@@ -1,190 +0,0 @@
-
-   Copyright (c) 2005-2008, The Android Open Source Project
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
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-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
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-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
diff --git a/libpixelflinger/arch-arm64/col32cb16blend.S b/libpixelflinger/arch-arm64/col32cb16blend.S
deleted file mode 100644
index 84596f9..0000000
--- a/libpixelflinger/arch-arm64/col32cb16blend.S
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-    .text
-    .balign 0
-
-    .global scanline_col32cb16blend_arm64
-
-//
-// This function alpha blends a fixed color into a destination scanline, using
-// the formula:
-//
-//     d = s + (((a + (a >> 7)) * d) >> 8)
-//
-// where d is the destination pixel,
-//       s is the source color,
-//       a is the alpha channel of the source color.
-//
-
-// x0 = destination buffer pointer
-// w1 = color value
-// w2 = count
-
-
-scanline_col32cb16blend_arm64:
-
-    lsr         w5, w1, #24                     // shift down alpha
-    mov         w9, #0xff                       // create mask
-    add         w5, w5, w5, lsr #7              // add in top bit
-    mov         w4, #256                        // create #0x100
-    sub         w5, w4, w5                      // invert alpha
-    and         w10, w1, #0xff                  // extract red
-    and         w12, w9, w1, lsr #8             // extract green
-    and         w4,  w9, w1, lsr #16            // extract blue
-    lsl         w10, w10, #5                    // prescale red
-    lsl         w12, w12, #6                    // prescale green
-    lsl         w4,  w4,  #5                    // prescale blue
-    lsr         w9,  w9,  #2                    // create dest green mask
-
-1:
-    ldrh        w8, [x0]                        // load dest pixel
-    subs        w2, w2, #1                      // decrement loop counter
-    lsr         w6, w8, #11                     // extract dest red
-    and         w7, w9, w8, lsr #5              // extract dest green
-    and         w8, w8, #0x1f                   // extract dest blue
-
-    madd        w6, w6, w5, w10                 // dest red * alpha + src red
-    madd        w7, w7, w5, w12                 // dest green * alpha + src green
-    madd        w8, w8, w5, w4                  // dest blue * alpha + src blue
-
-    lsr         w6, w6, #8                      // shift down red
-    lsr         w7, w7, #8                      // shift down green
-    lsl         w6, w6, #11                     // shift red into 565
-    orr         w6, w6, w7, lsl #5              // shift green into 565
-    orr         w6, w6, w8, lsr #8              // shift blue into 565
-
-    strh        w6, [x0], #2                    // store pixel to dest, update ptr
-    b.ne        1b                              // if count != 0, loop
-
-    ret
-
-
-
diff --git a/libpixelflinger/arch-arm64/t32cb16blend.S b/libpixelflinger/arch-arm64/t32cb16blend.S
deleted file mode 100644
index a9733c0..0000000
--- a/libpixelflinger/arch-arm64/t32cb16blend.S
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-    .text
-    .balign 0
-
-    .global scanline_t32cb16blend_arm64
-
-/*
- * .macro pixel
- *
- *  This macro alpha blends RGB565 original pixel located in either
- *  top or bottom 16 bits of DREG register with SRC 32 bit pixel value
- *  and writes the result to FB register
- *
- * \DREG is a 32-bit register containing *two* original destination RGB565
- *       pixels, with the even one in the low-16 bits, and the odd one in the
- *       high 16 bits.
- *
- * \SRC is a 32-bit 0xAABBGGRR pixel value, with pre-multiplied colors.
- *
- * \FB is a target register that will contain the blended pixel values.
- *
- * \ODD is either 0 or 1 and indicates if we're blending the lower or
- *      upper 16-bit pixels in DREG into FB
- *
- *
- * clobbered: w6, w7, w15, w16, w17
- *
- */
-
-.macro pixel,   DREG, SRC, FB, ODD
-
-    // SRC = 0xAABBGGRR
-    lsr     w7, \SRC, #24               // sA
-    add     w7, w7, w7, lsr #7          // sA + (sA >> 7)
-    mov     w6, #0x100
-    sub     w7, w6, w7                  // sA = 0x100 - (sA+(sA>>7))
-
-1:
-
-.if \ODD //Blending odd pixel present in top 16 bits of DREG register
-
-    // red
-    lsr     w16, \DREG, #(16 + 11)
-    mul     w16, w7, w16
-    lsr     w6, \SRC, #3
-    and     w6, w6, #0x1F
-    add     w16, w6, w16, lsr #8
-    cmp     w16, #0x1F
-    orr     w17, \FB, #(0x1F<<(16 + 11))
-    orr     w15, \FB, w16, lsl #(16 + 11)
-    csel    \FB, w17, w15, hi
-        // green
-        and     w6, \DREG, #(0x3F<<(16 + 5))
-        lsr     w17,w6,#(16+5)
-        mul     w6, w7, w17
-        lsr     w16, \SRC, #(8+2)
-        and     w16, w16, #0x3F
-        add     w6, w16, w6, lsr #8
-        cmp     w6, #0x3F
-        orr     w17, \FB, #(0x3F<<(16 + 5))
-        orr     w15, \FB, w6, lsl #(16 + 5)
-        csel    \FB, w17, w15, hi
-            // blue
-            and     w16, \DREG, #(0x1F << 16)
-            lsr     w17,w16,#16
-            mul     w16, w7, w17
-            lsr     w6, \SRC, #(8+8+3)
-            and     w6, w6, #0x1F
-            add     w16, w6, w16, lsr #8
-            cmp     w16, #0x1F
-            orr     w17, \FB, #(0x1F << 16)
-            orr     w15, \FB, w16, lsl #16
-            csel    \FB, w17, w15, hi
-
-.else //Blending even pixel present in bottom 16 bits of DREG register
-
-    // red
-    lsr     w16, \DREG, #11
-    and     w16, w16, #0x1F
-    mul     w16, w7, w16
-    lsr     w6, \SRC, #3
-    and     w6, w6, #0x1F
-    add     w16, w6, w16, lsr #8
-    cmp     w16, #0x1F
-    mov     w17, #(0x1F<<11)
-    lsl     w15, w16, #11
-    csel    \FB, w17, w15, hi
-
-
-        // green
-        and     w6, \DREG, #(0x3F<<5)
-        mul     w6, w7, w6
-        lsr     w16, \SRC, #(8+2)
-        and     w16, w16, #0x3F
-        add     w6, w16, w6, lsr #(5+8)
-        cmp     w6, #0x3F
-        orr     w17, \FB, #(0x3F<<5)
-        orr     w15, \FB, w6, lsl #5
-        csel    \FB, w17, w15, hi
-
-            // blue
-            and     w16, \DREG, #0x1F
-            mul     w16, w7, w16
-            lsr     w6, \SRC, #(8+8+3)
-            and     w6, w6, #0x1F
-            add     w16, w6, w16, lsr #8
-            cmp     w16, #0x1F
-            orr     w17, \FB, #0x1F
-            orr     w15, \FB, w16
-            csel    \FB, w17, w15, hi
-
-.endif // End of blending even pixel
-
-.endm // End of pixel macro
-
-
-// x0:  dst ptr
-// x1:  src ptr
-// w2:  count
-// w3:  d
-// w4:  s0
-// w5:  s1
-// w6:  pixel
-// w7:  pixel
-// w8:  free
-// w9:  free
-// w10: free
-// w11: free
-// w12: scratch
-// w14: pixel
-
-scanline_t32cb16blend_arm64:
-
-    // align DST to 32 bits
-    tst     x0, #0x3
-    b.eq    aligned
-    subs    w2, w2, #1
-    b.lo    return
-
-last:
-    ldr     w4, [x1], #4
-    ldrh    w3, [x0]
-    pixel   w3, w4, w12, 0
-    strh    w12, [x0], #2
-
-aligned:
-    subs    w2, w2, #2
-    b.lo    9f
-
-    // The main loop is unrolled twice and processes 4 pixels
-8:
-    ldp   w4,w5, [x1], #8
-    add     x0, x0, #4
-    // it's all zero, skip this pixel
-    orr     w3, w4, w5
-    cbz     w3, 7f
-
-    // load the destination
-    ldr     w3, [x0, #-4]
-    // stream the destination
-    pixel   w3, w4, w12, 0
-    pixel   w3, w5, w12, 1
-    str     w12, [x0, #-4]
-
-    // 2nd iteration of the loop, don't stream anything
-    subs    w2, w2, #2
-    csel    w4, w5, w4, lt
-    blt     9f
-    ldp     w4,w5, [x1], #8
-    add     x0, x0, #4
-    orr     w3, w4, w5
-    cbz     w3, 7f
-    ldr     w3, [x0, #-4]
-    pixel   w3, w4, w12, 0
-    pixel   w3, w5, w12, 1
-    str     w12, [x0, #-4]
-
-7:  subs    w2, w2, #2
-    bhs     8b
-    mov     w4, w5
-
-9:  adds    w2, w2, #1
-    b.lo    return
-    b       last
-
-return:
-    ret
diff --git a/libpixelflinger/arch-mips/col32cb16blend.S b/libpixelflinger/arch-mips/col32cb16blend.S
deleted file mode 100644
index 810294c..0000000
--- a/libpixelflinger/arch-mips/col32cb16blend.S
+++ /dev/null
@@ -1,134 +0,0 @@
-/*
-** Copyright 2015, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-       .macro pixel dreg src f sR sG sB shift
-
-#if __mips==32 && __mips_isa_rev>=2
-       /* extract red */
-       ext $t4,\src,\shift+11,5
-       mul $t4,$t4,\f
-
-       /* extract green */
-       ext $t5,\src,\shift+5,6
-       mul $t5,$t5,\f
-
-       /* extract blue */
-       ext $t6,\src,\shift,5
-       mul $t6,$t6,\f
-#else
-       /* extract red */
-       srl $t4,\src,\shift+11
-       andi $t4, 0x1f
-       mul $t4,$t4,\f
-
-       /* extract green */
-       srl $t5,\src,\shift+5
-       andi $t5, 0x3f
-       mul $t5,$t5,\f
-
-       /* extract blue */
-       srl $t6,\src,\shift
-       andi $t6, 0x1f
-       mul $t6,$t6,\f
-#endif
-
-       srl $t4,$t4,8
-       srl $t5,$t5,8
-       srl $t6,$t6,8
-       addu $t4,$t4,\sR
-       addu $t5,$t5,\sG
-       addu \dreg,$t6,\sB
-       sll $t4,$t4,11
-       sll $t5,$t5,5
-       or \dreg,\dreg,$t4
-       or \dreg,\dreg,$t5
-       andi \dreg, 0xffff
-       .endm
-
-       .text
-       .balign 4
-
-       .global scanline_col32cb16blend_mips
-       .ent    scanline_col32cb16blend_mips
-scanline_col32cb16blend_mips:
-
-       /* check if count is zero */
-       srl     $v0,$a1,24 /* sA */
-       beqz    $a2,done
-       li      $t4, 0x100
-       srl     $v1,$v0,7
-       addu    $v0,$v1,$v0
-       subu    $v0,$t4,$v0 /* f */
-#if __mips==32 && __mips_isa_rev>=2
-       ext     $a3,$a1,3,5 /* sR */
-       ext     $t0,$a1,10,6 /* sG */
-       ext     $t1,$a1,19,5 /* sB */
-#else
-       srl     $a3, $a1, 3
-       andi    $a3, 0x1f    /* sR */
-       srl     $t0, $a1, 10
-       andi    $t0, 0x3f    /* sG */
-       srl     $t1, $a1, 19
-       andi    $t1, 0x1f    /* sB */
-#endif
-
-       /* check if cnt is at least 4 */
-       addiu   $a2,$a2,-4
-       bltz    $a2,tail
-
-loop_4pixels:
-       lw      $t7,0($a0)
-       lw      $t8,4($a0)
-       addiu   $a0,$a0,8
-       addiu   $a2,$a2,-4
-       pixel   $t2 $t7 $v0 $a3 $t0 $t1 0
-       pixel   $t3 $t7 $v0 $a3 $t0 $t1 16
-#if __mips==32 && __mips_isa_rev>=2
-       ins     $t2,$t3,16,16
-#else
-       sll $t3, 16
-       or  $t2, $t2, $t3
-#endif
-       pixel   $t7 $t8 $v0 $a3 $t0 $t1 0
-       pixel   $t3 $t8 $v0 $a3 $t0 $t1 16
-#if __mips==32 && __mips_isa_rev>=2
-       ins     $t7,$t3,16,16
-#else
-       sll $t3, 16
-       or  $t7, $t7, $t3
-#endif
-       sw      $t2,-8($a0)
-       sw      $t7,-4($a0)
-       bgez    $a2, loop_4pixels
-
-tail:
-       /* the pixel count underran, restore it now */
-       addiu   $a2,$a2,4
-
-       /* handle the last 0..3 pixels */
-       beqz    $a2,done
-
-loop_1pixel:
-       lhu     $t7,0($a0)
-       addiu   $a0,$a0,2
-       addiu   $a2,$a2,-1
-       pixel   $t2 $t7 $v0 $a3 $t0 $t1 0
-       sh      $t2, -2($a0)
-       bnez    $a2,loop_1pixel
-
-done:
-       j       $ra
-       .end    scanline_col32cb16blend_mips
diff --git a/libpixelflinger/arch-mips/t32cb16blend.S b/libpixelflinger/arch-mips/t32cb16blend.S
deleted file mode 100644
index 1d2fb8f..0000000
--- a/libpixelflinger/arch-mips/t32cb16blend.S
+++ /dev/null
@@ -1,273 +0,0 @@
-/* libs/pixelflinger/t32cb16blend.S
-**
-** Copyright 2010, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifdef DEBUG
-#define DBG
-#else
-#define DBG #
-#endif
-
-/*
- * blend one of 2 16bpp RGB pixels held in dreg selected by shift
- * with the 32bpp ABGR pixel held in src and store the result in fb
- *
- * Assumes that the dreg data is little endian and that
- * the the second pixel (shift==16) will be merged into
- * the fb result
- *
- * Uses $t0,$t6,$t7,$t8
- */
-
-#if __mips==32 && __mips_isa_rev>=2
-    .macro pixel dreg src fb shift
-    /*
-     * sA = s >> 24
-     * f = 0x100 - (sA + (sA>>7))
-     */
-DBG .set    noat
-DBG rdhwr   $at,$2
-DBG .set    at
-
-    srl  $t7,\src,24
-    srl  $t6,$t7,7
-    addu $t7,$t6
-    li   $t6,0x100
-    subu $t7,$t6,$t7
-
-    /* red */
-    ext  $t8,\dreg,\shift+6+5,5         # dst[\shift:15..11]
-    mul  $t6,$t8,$t7
-    ext  $t0,\dreg,\shift+5,6           # start green extraction dst[\shift:10..5]
-    ext  $t8,\src,3,5               # src[7..3]
-    srl  $t6,8
-    addu $t8,$t6
-.if \shift!=0
-    sll  $t8,\shift+11
-    or   \fb,$t8
-.else
-    sll  \fb,$t8,11
-.endif
-
-    /* green */
-    mul  $t8,$t0,$t7
-    ext  $t0,\dreg,\shift,5         # start blue extraction dst[\shift:4..0]
-    ext  $t6,\src,2+8,6             # src[15..10]
-    srl  $t8,8
-    addu $t8,$t6
-
-    /* blue */
-    mul  $t0,$t0,$t7
-    sll  $t8, $t8, \shift+5
-    or   \fb, \fb, $t8
-    ext  $t6,\src,(3+8+8),5
-    srl  $t8,$t0,8
-    addu $t8,$t6
-    sll  $t8, $t8, \shift
-    or   \fb, \fb, $t8
-
-DBG .set    noat
-DBG rdhwr $t8,$2
-DBG subu  $t8,$at
-DBG sltu  $at,$t8,$v0
-DBG movn  $v0,$t8,$at
-DBG sgtu  $at,$t8,$v1
-DBG movn  $v1,$t8,$at
-DBG .set    at
-    .endm
-
-#else
-
-    .macro pixel dreg src fb shift
-    /*
-     * sA = s >> 24
-     * f = 0x100 - (sA + (sA>>7))
-     */
-DBG .set    push
-DBG .set    noat
-DBG .set    mips32r2
-DBG rdhwr   $at,$2
-DBG .set    pop
-
-    srl  $t7,\src,24
-    srl  $t6,$t7,7
-    addu $t7,$t6
-    li   $t6,0x100
-    subu $t7,$t6,$t7
-
-    /*
-     * red
-     * dR = (d >> (6 + 5)) & 0x1f;
-     * dR = (f*dR)>>8
-     * sR = (s >> (   3)) & 0x1f;
-     * sR += dR
-     * fb |= sR << 11
-     */
-    srl  $t8,\dreg,\shift+6+5
-.if \shift==0
-    and  $t8,0x1f
-.endif
-    mul  $t8,$t8,$t7
-    srl  $t6,\src,3
-    and  $t6,0x1f
-    srl  $t8,8
-    addu $t8,$t6
-.if \shift!=0
-    sll  $t8,\shift+11
-    or   \fb,$t8
-.else
-    sll  \fb,$t8,11
-.endif
-
-        /*
-     * green
-     * dG = (d >> 5) & 0x3f
-     * dG = (f*dG) >> 8
-     * sG = (s >> ( 8+2))&0x3F;
-     */
-    srl  $t8,\dreg,\shift+5
-    and  $t8,0x3f
-    mul  $t8,$t8,$t7
-    srl  $t6,\src,8+2
-    and  $t6,0x3f
-    srl  $t8,8
-    addu $t8,$t6
-    sll  $t8,\shift + 5
-    or   \fb,$t8
-
-    /* blue */
-.if \shift!=0
-    srl  $t8,\dreg,\shift
-    and  $t8,0x1f
-.else
-    and  $t8,\dreg,0x1f
-.endif
-    mul  $t8,$t8,$t7
-    srl  $t6,\src,(8+8+3)
-    and  $t6,0x1f
-    srl  $t8,8
-    addu $t8,$t6
-.if \shift!=0
-    sll  $t8,\shift
-.endif
-    or   \fb,$t8
-DBG .set    push
-DBG .set    noat
-DBG .set    mips32r2
-DBG rdhwr   $t8,$2
-DBG subu    $t8,$at
-DBG sltu    $at,$t8,$v0
-DBG movn    $v0,$t8,$at
-DBG sgtu    $at,$t8,$v1
-DBG movn    $v1,$t8,$at
-DBG .set    pop
-    .endm
-#endif
-
-    .text
-    .balign 4
-
-    .global scanline_t32cb16blend_mips
-    .ent    scanline_t32cb16blend_mips
-scanline_t32cb16blend_mips:
-DBG li    $v0,0xffffffff
-DBG li    $v1,0
-    /* Align the destination if necessary */
-    and   $t0,$a0,3
-    beqz  $t0,aligned
-
-    /* as long as there is at least one pixel */
-    beqz  $a2,done
-
-    lw    $t4,($a1)
-    addu  $a0,2
-    addu  $a1,4
-    beqz  $t4,1f
-    lhu   $t3,-2($a0)
-    pixel $t3,$t4,$t1,0
-    sh    $t1,-2($a0)
-1:  subu  $a2,1
-
-aligned:
-    /* Check to see if its worth unrolling the loop */
-    subu  $a2,4
-    bltz  $a2,tail
-
-    /* Process 4 pixels at a time */
-fourpixels:
-    /* 1st pair of pixels */
-    lw    $t4,0($a1)
-    lw    $t5,4($a1)
-    addu  $a0,8
-    addu  $a1,16
-
-    /* both are zero, skip this pair */
-    or    $t3,$t4,$t5
-    beqz  $t3,1f
-
-    /* load the destination */
-    lw    $t3,-8($a0)
-
-    pixel $t3,$t4,$t1,0
-    andi  $t1, 0xFFFF
-    pixel $t3,$t5,$t1,16
-    sw    $t1,-8($a0)
-
-1:
-    /* 2nd pair of pixels */
-    lw    $t4,-8($a1)
-    lw    $t5,-4($a1)
-
-    /* both are zero, skip this pair */
-    or    $t3,$t4,$t5
-    beqz  $t3,1f
-
-    /* load the destination */
-    lw    $t3,-4($a0)
-
-    pixel $t3,$t4,$t1,0
-    andi  $t1, 0xFFFF
-    pixel $t3,$t5,$t1,16
-    sw    $t1,-4($a0)
-
-1:  subu  $a2,4
-    bgtz  $a2,fourpixels
-
-tail:
-    /* the pixel count underran, restore it now */
-    addu  $a2,4
-
-    /* handle the last 0..3 pixels */
-    beqz  $a2,done
-onepixel:
-    lw    $t4,($a1)
-    addu  $a0,2
-    addu  $a1,4
-    beqz  $t4,1f
-    lhu   $t3,-2($a0)
-    pixel $t3,$t4,$t1,0
-    sh    $t1,-2($a0)
-1:  subu  $a2,1
-    bnez  $a2,onepixel
-done:
-DBG .set    push
-DBG .set    mips32r2
-DBG rdhwr   $a0,$3
-DBG mul     $v0,$a0
-DBG mul     $v1,$a0
-DBG .set    pop
-    j     $ra
-    .end    scanline_t32cb16blend_mips
diff --git a/libpixelflinger/arch-mips64/col32cb16blend.S b/libpixelflinger/arch-mips64/col32cb16blend.S
deleted file mode 100644
index 5baffb1..0000000
--- a/libpixelflinger/arch-mips64/col32cb16blend.S
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
-** Copyright 2015, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-    .macro pixel dreg src f sR sG sB shift
-
-    /* extract red */
-.if \shift < 32
-    dext   $t0,\src,\shift+11,5
-.else
-    dextu  $t0,\src,\shift+11,5
-.endif
-    mul    $t0,$t0,\f
-
-    /* extract green */
-.if \shift < 32
-    dext   $t1,\src,\shift+5,6
-.else
-    dextu  $t1,\src,\shift+5,6
-.endif
-    mul    $t1,$t1,\f
-
-    /* extract blue */
-.if \shift < 32
-    dext   $t2,\src,\shift,5
-.else
-    dextu  $t2,\src,\shift,5
-.endif
-    mul    $t2,$t2,\f
-
-    srl    $t0,$t0,8
-    srl    $t1,$t1,8
-    srl    $t2,$t2,8
-    addu   $t0,$t0,\sR
-    addu   $t1,$t1,\sG
-    addu   \dreg,$t2,\sB
-    sll    $t0,$t0,11
-    sll    $t1,$t1,5
-    or     \dreg,\dreg,$t0
-    or     \dreg,\dreg,$t1
-    .endm
-
-    .text
-    .balign 4
-
-    .global scanline_col32cb16blend_mips64
-    .ent    scanline_col32cb16blend_mips64
-scanline_col32cb16blend_mips64:
-
-    /* check if count is zero */
-    srl     $v0,$a1,24 /* sA */
-    beqz    $a2,done
-    li      $t0, 0x100
-    srl     $v1,$v0,7
-    addu    $v0,$v1,$v0
-    subu    $v0,$t0,$v0 /* f */
-    ext     $a3,$a1,3,5 /* sR */
-    ext     $a4,$a1,10,6 /* sG */
-    ext     $a5,$a1,19,5 /* sB */
-
-    /* check if cnt is at least 4 */
-    addiu   $a2,$a2,-4
-    bltz    $a2,tail
-
-loop_4pixels:
-    ld      $t3,0($a0)
-    daddiu  $a0,$a0,8
-    addiu   $a2,$a2,-4
-    pixel   $a6 $t3 $v0 $a3 $a4 $a5 0
-    pixel   $a7 $t3 $v0 $a3 $a4 $a5 16
-    pixel   $t8 $t3 $v0 $a3 $a4 $a5 32
-    pixel   $t9 $t3 $v0 $a3 $a4 $a5 48
-    dins    $a6,$a7,16,16
-    dinsu   $a6,$t8,32,16
-    dinsu   $a6,$t9,48,16
-    sd      $a6,-8($a0)
-    bgez    $a2, loop_4pixels
-
-tail:
-    /* the pixel count underran, restore it now */
-    addiu   $a2,$a2,4
-
-    /* handle the last 0..3 pixels */
-    beqz    $a2,done
-
-loop_1pixel:
-    lhu     $t3,0($a0)
-    daddiu  $a0,$a0,2
-    addiu   $a2,$a2,-1
-    pixel   $a6 $t3 $v0 $a3 $a4 $a5 0
-    sh      $a6, -2($a0)
-    bnez    $a2,loop_1pixel
-
-done:
-    j       $ra
-    .end    scanline_col32cb16blend_mips64
diff --git a/libpixelflinger/arch-mips64/t32cb16blend.S b/libpixelflinger/arch-mips64/t32cb16blend.S
deleted file mode 100644
index 3cb5f93..0000000
--- a/libpixelflinger/arch-mips64/t32cb16blend.S
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
-** Copyright 2015, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifdef DEBUG
-#define DBG
-#else
-#define DBG #
-#endif
-
-/*
- * blend one of 2 16bpp RGB pixels held in dreg selected by shift
- * with the 32bpp ABGR pixel held in src and store the result in fb
- *
- * Assumes that the dreg data is little endian and that
- * the the second pixel (shift==16) will be merged into
- * the fb result
- *
- * Uses $a4,$t2,$t3,$t8
- */
-
-    .macro pixel dreg src fb shift
-    /*
-     * sA = s >> 24
-     * f = 0x100 - (sA + (sA>>7))
-     */
-    srl     $t3,\src,24
-    srl     $t2,$t3,7
-    addu    $t3,$t2
-    li      $t2,0x100
-    subu    $t3,$t2,$t3
-
-    /* red */
-    ext     $t8,\dreg,\shift+6+5,5                  # dst[\shift:15..11]
-    mul     $t2,$t8,$t3
-    ext     $a4,\dreg,\shift+5,6                    # start green extraction dst[\shift:10..5]
-    ext     $t8,\src,3,5                            # src[7..3]
-    srl     $t2,8
-    addu    $t8,$t2
-.if \shift!=0
-    sll     $t8,\shift+11                           # dst[\shift:15..11]
-    or      \fb,$t8
-.else
-    sll     \fb,$t8,11
-.endif
-
-    /* green */
-    mul     $t8,$a4,$t3
-    ext     $a4,\dreg,\shift,5                      # start blue extraction dst[\shift:4..0]
-    ext     $t2,\src,2+8,6                          # src[15..10]
-    srl     $t8,8
-    addu    $t8,$t2
-
-    /* blue */
-    mul     $a4,$a4,$t3
-    sll     $t8, $t8, \shift+5                  # finish green insertion dst[\shift:10..5]
-    or      \fb, \fb, $t8
-    ext     $t2,\src,(3+8+8),5
-    srl     $t8,$a4,8
-    addu    $t8,$t2
-    sll     $t8, $t8, \shift
-    or      \fb, \fb, $t8
-    .endm
-
-    .text
-    .balign 4
-
-    .global scanline_t32cb16blend_mips64
-    .ent    scanline_t32cb16blend_mips64
-scanline_t32cb16blend_mips64:
-    daddiu  $sp, $sp, -40
-DBG li      $v0,0xffffffff
-DBG li      $v1,0
-    /* Align the destination if necessary */
-    and     $a4,$a0,3
-    beqz    $a4,aligned
-
-    /* as long as there is at least one pixel */
-    beqz    $a2,done
-
-    lw      $t0,($a1)
-    daddu   $a0,2
-    daddu   $a1,4
-    beqz    $t0,1f
-    lhu     $a7,-2($a0)
-    pixel   $a7,$t0,$a5,0
-    sh      $a5,-2($a0)
-1:  subu    $a2,1
-
-aligned:
-    /* Check to see if its worth unrolling the loop */
-    subu    $a2,4
-    bltz    $a2,tail
-
-    /* Process 4 pixels at a time */
-fourpixels:
-    /* 1st pair of pixels */
-    lw      $t0,0($a1)
-    lw      $t1,4($a1)
-    daddu   $a0,8
-    daddu   $a1,16
-
-    /* both are zero, skip this pair */
-    or      $a7,$t0,$t1
-    beqz    $a7,1f
-
-    /* load the destination */
-    lw      $a7,-8($a0)
-
-    pixel   $a7,$t0,$a5,0
-    andi    $a5, 0xFFFF
-    pixel   $a7,$t1,$a5,16
-    sw      $a5,-8($a0)
-
-1:
-    /* 2nd pair of pixels */
-    lw      $t0,-8($a1)
-    lw      $t1,-4($a1)
-
-    /* both are zero, skip this pair */
-    or      $a7,$t0,$t1
-    beqz    $a7,1f
-
-    /* load the destination */
-    lw      $a7,-4($a0)
-
-    pixel   $a7,$t0,$a5,0
-    andi    $a5, 0xFFFF
-    pixel   $a7,$t1,$a5,16
-    sw      $a5,-4($a0)
-
-1:  subu    $a2,4
-    bgtz    $a2,fourpixels
-
-tail:
-    /* the pixel count underran, restore it now */
-    addu    $a2,4
-
-    /* handle the last 0..3 pixels */
-    beqz    $a2,done
-onepixel:
-    lw      $t0,($a1)
-    daddu   $a0,2
-    daddu   $a1,4
-    beqz    $t0,1f
-    lhu     $a7,-2($a0)
-    pixel   $a7,$t0,$a5,0
-    sh      $a5,-2($a0)
-1:  subu    $a2,1
-    bnez    $a2,onepixel
-done:
-DBG .set    push
-DBG .set    mips32r2
-DBG rdhwr   $a0,$3
-DBG mul     $v0,$a0
-DBG mul     $v1,$a0
-DBG .set    pop
-    daddiu  $sp, $sp, 40
-    j       $ra
-    .end    scanline_t32cb16blend_mips64
diff --git a/libpixelflinger/buffer.cpp b/libpixelflinger/buffer.cpp
deleted file mode 100644
index ea9514c..0000000
--- a/libpixelflinger/buffer.cpp
+++ /dev/null
@@ -1,389 +0,0 @@
-/* libs/pixelflinger/buffer.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#include <assert.h>
-
-#include <android-base/macros.h>
-
-#include "buffer.h"
-
-namespace android {
-// ----------------------------------------------------------------------------
-
-static void read_pixel(const surface_t* s, context_t* c,
-        uint32_t x, uint32_t y, pixel_t* pixel);
-static void write_pixel(const surface_t* s, context_t* c,
-        uint32_t x, uint32_t y, const pixel_t* pixel);
-static void readRGB565(const surface_t* s, context_t* c,
-        uint32_t x, uint32_t y, pixel_t* pixel);
-static void readABGR8888(const surface_t* s, context_t* c,
-        uint32_t x, uint32_t y, pixel_t* pixel);
-
-static uint32_t logic_op(int op, uint32_t s, uint32_t d);
-static uint32_t extract(uint32_t v, int h, int l, int bits);
-static uint32_t expand(uint32_t v, int sbits, int dbits);
-static uint32_t downshift_component(uint32_t in, uint32_t v,
-        int sh, int sl, int dh, int dl, int ch, int cl, int dither);
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_texture(context_t* c)
-{
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        texture_t& t = c->state.texture[i];
-        t.s_coord = GGL_ONE_TO_ONE;
-        t.t_coord = GGL_ONE_TO_ONE;
-        t.s_wrap = GGL_REPEAT;
-        t.t_wrap = GGL_REPEAT;
-        t.min_filter = GGL_NEAREST;
-        t.mag_filter = GGL_NEAREST;
-        t.env = GGL_MODULATE;
-    }
-    c->activeTMU = &(c->state.texture[0]);
-}
-
-void ggl_set_surface(context_t* c, surface_t* dst, const GGLSurface* src)
-{
-    dst->width = src->width;
-    dst->height = src->height;
-    dst->stride = src->stride;
-    dst->data = src->data;
-    dst->format = src->format;
-    dst->dirty = 1;
-    if (__builtin_expect(dst->stride < 0, false)) {
-        const GGLFormat& pixelFormat(c->formats[dst->format]);
-        const int32_t bpr = -dst->stride * pixelFormat.size;
-        dst->data += bpr * (dst->height-1);
-    }
-}
-
-static void pick_read_write(surface_t* s)
-{
-    // Choose best reader/writers.
-    switch (s->format) {
-        case GGL_PIXEL_FORMAT_RGBA_8888:    s->read = readABGR8888;  break;
-        case GGL_PIXEL_FORMAT_RGB_565:      s->read = readRGB565;    break;
-        default:                            s->read = read_pixel;    break;
-    }
-    s->write = write_pixel;
-}
-
-void ggl_pick_texture(context_t* c)
-{
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-        surface_t& s = c->state.texture[i].surface;
-        if ((!c->state.texture[i].enable) || (!s.dirty))
-            continue;
-        s.dirty = 0;
-        pick_read_write(&s);
-        generated_tex_vars_t& gen = c->generated_vars.texture[i];
-        gen.width   = s.width;
-        gen.height  = s.height;
-        gen.stride  = s.stride;
-        gen.data    = uintptr_t(s.data);
-    }
-}
-
-void ggl_pick_cb(context_t* c)
-{
-    surface_t& s = c->state.buffers.color;
-    if (s.dirty) {
-        s.dirty = 0;
-        pick_read_write(&s);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-void read_pixel(const surface_t* s, context_t* c,
-        uint32_t x, uint32_t y, pixel_t* pixel)
-{
-    assert((x < s->width) && (y < s->height));
-
-    const GGLFormat* f = &(c->formats[s->format]);
-    int32_t index = x + (s->stride * y);
-    uint8_t* const data = s->data + index * f->size;
-    uint32_t v = 0;
-    switch (f->size) {
-        case 1:		v = *data;									break;
-        case 2:		v = *(uint16_t*)data;						break;
-        case 3:		v = (data[2]<<16)|(data[1]<<8)|data[0];     break;
-        case 4:		v = GGL_RGBA_TO_HOST(*(uint32_t*)data);		break;
-    }
-    for (int i=0 ; i<4 ; i++) {
-        pixel->s[i] = f->c[i].h - f->c[i].l;
-        if (pixel->s[i])
-            pixel->c[i] = extract(v,  f->c[i].h,  f->c[i].l, f->size*8);
-    }
-}
-
-void readRGB565(const surface_t* s, context_t* /*c*/,
-        uint32_t x, uint32_t y, pixel_t* pixel)
-{
-    uint16_t v = *(reinterpret_cast<uint16_t*>(s->data) + (x + (s->stride * y)));
-    pixel->c[0] = 0;
-    pixel->c[1] = v>>11;
-    pixel->c[2] = (v>>5)&0x3F;
-    pixel->c[3] = v&0x1F;
-    pixel->s[0] = 0;
-    pixel->s[1] = 5;
-    pixel->s[2] = 6;
-    pixel->s[3] = 5;
-}
-
-void readABGR8888(const surface_t* s, context_t* /*c*/,
-        uint32_t x, uint32_t y, pixel_t* pixel)
-{
-    uint32_t v = *(reinterpret_cast<uint32_t*>(s->data) + (x + (s->stride * y)));
-    v = GGL_RGBA_TO_HOST(v);
-    pixel->c[0] = v>>24;        // A
-    pixel->c[1] = v&0xFF;       // R
-    pixel->c[2] = (v>>8)&0xFF;  // G
-    pixel->c[3] = (v>>16)&0xFF; // B
-    pixel->s[0] = 
-    pixel->s[1] = 
-    pixel->s[2] = 
-    pixel->s[3] = 8;
-}
-
-void write_pixel(const surface_t* s, context_t* c,
-        uint32_t x, uint32_t y, const pixel_t* pixel)
-{
-    assert((x < s->width) && (y < s->height));
-
-    int dither = -1;
-    if (c->state.enables & GGL_ENABLE_DITHER) {
-        dither = c->ditherMatrix[ (x & GGL_DITHER_MASK) +
-                ((y & GGL_DITHER_MASK)<<GGL_DITHER_ORDER_SHIFT) ];
-    }
-
-    const GGLFormat* f = &(c->formats[s->format]);
-    int32_t index = x + (s->stride * y);
-    uint8_t* const data = s->data + index * f->size;
-        
-    uint32_t mask = 0;
-    uint32_t v = 0;
-    for (int i=0 ; i<4 ; i++) {
-        const int component_mask = 1 << i;
-        if (f->components>=GGL_LUMINANCE &&
-                (i==GGLFormat::GREEN || i==GGLFormat::BLUE)) {
-            // destinations L formats don't have G or B
-            continue;
-        }
-        const int l = f->c[i].l;
-        const int h = f->c[i].h;
-        if (h && (c->state.mask.color & component_mask)) {
-            mask |= (((1<<(h-l))-1)<<l);
-            uint32_t u = pixel->c[i];
-            int32_t pixelSize = pixel->s[i];
-            if (pixelSize < (h-l)) {
-                u = expand(u, pixelSize, h-l);
-                pixelSize = h-l;
-            }
-            v = downshift_component(v, u, pixelSize, 0, h, l, 0, 0, dither);
-        }
-    }
-
-    if ((c->state.mask.color != 0xF) || 
-        (c->state.enables & GGL_ENABLE_LOGIC_OP)) {
-        uint32_t d = 0;
-        switch (f->size) {
-            case 1:	d = *data;									break;
-            case 2:	d = *(uint16_t*)data;						break;
-            case 3:	d = (data[2]<<16)|(data[1]<<8)|data[0];     break;
-            case 4:	d = GGL_RGBA_TO_HOST(*(uint32_t*)data);		break;
-        }
-        if (c->state.enables & GGL_ENABLE_LOGIC_OP) {
-            v = logic_op(c->state.logic_op.opcode, v, d);            
-            v &= mask;
-        }
-        v |= (d & ~mask);
-    }
-
-    switch (f->size) {
-        case 1:		*data = v;									break;
-        case 2:		*(uint16_t*)data = v;						break;
-        case 3:
-            data[0] = v;
-            data[1] = v>>8;
-            data[2] = v>>16;
-            break;
-        case 4:		*(uint32_t*)data = GGL_HOST_TO_RGBA(v);     break;
-    }
-}
-
-static uint32_t logic_op(int op, uint32_t s, uint32_t d)
-{
-    switch(op) {
-    case GGL_CLEAR:         return 0;
-    case GGL_AND:           return s & d;
-    case GGL_AND_REVERSE:   return s & ~d;
-    case GGL_COPY:          return s;
-    case GGL_AND_INVERTED:  return ~s & d;
-    case GGL_NOOP:          return d;
-    case GGL_XOR:           return s ^ d;
-    case GGL_OR:            return s | d;
-    case GGL_NOR:           return ~(s | d);
-    case GGL_EQUIV:         return ~(s ^ d);
-    case GGL_INVERT:        return ~d;
-    case GGL_OR_REVERSE:    return s | ~d;
-    case GGL_COPY_INVERTED: return ~s;
-    case GGL_OR_INVERTED:   return ~s | d;
-    case GGL_NAND:          return ~(s & d);
-    case GGL_SET:           return ~0;
-    };
-    return s;
-}            
-
-
-uint32_t ggl_expand(uint32_t v, int sbits, int dbits)
-{
-    return expand(v, sbits, dbits);
-}
-
-uint32_t ggl_pack_color(context_t* c, int32_t format,
-        GGLcolor r, GGLcolor g, GGLcolor b, GGLcolor a)
-{
-    const GGLFormat* f = &(c->formats[format]);
-    uint32_t p = 0;
-    const int32_t hbits = GGL_COLOR_BITS;
-    const int32_t lbits = GGL_COLOR_BITS - 8;
-    p = downshift_component(p, r,   hbits, lbits,  f->rh, f->rl, 0, 1, -1);
-    p = downshift_component(p, g,   hbits, lbits,  f->gh, f->gl, 0, 1, -1);
-    p = downshift_component(p, b,   hbits, lbits,  f->bh, f->bl, 0, 1, -1);
-    p = downshift_component(p, a,   hbits, lbits,  f->ah, f->al, 0, 1, -1);
-    switch (f->size) {
-        case 1:
-            p |= p << 8;
-            FALLTHROUGH_INTENDED;
-        case 2:
-            p |= p << 16;
-    }
-    return p;
-}
-
-// ----------------------------------------------------------------------------
-
-// extract a component from a word
-uint32_t extract(uint32_t v, int h, int l, int bits)
-{
-	assert(h);
-	if (l) {
-		v >>= l;
-	}
-	if (h != bits) {
-		v &= (1<<(h-l))-1;
-	}
-	return v;
-}
-
-// expand a component from sbits to dbits
-uint32_t expand(uint32_t v, int sbits, int dbits)
-{
-    if (dbits > sbits) {
-        assert(sbits);
-        if (sbits==1) {
-            v = (v<<dbits) - v;
-        } else {
-            if (dbits % sbits) {
-                v <<= (dbits-sbits);
-                dbits -= sbits;
-                do {
-                    v |= v>>sbits;
-                    dbits -= sbits;
-                    sbits *= 2;
-                } while (dbits>0);
-            } else {
-                dbits -= sbits;
-                do {
-                    v |= v<<sbits;
-                    dbits -= sbits;
-                    if (sbits*2 < dbits) {
-                        sbits *= 2;
-                    }
-                } while (dbits > 0);
-            }
-        }
-    }
-	return v;
-}
-
-// downsample a component from sbits to dbits
-// and shift / construct the pixel
-uint32_t downshift_component(	uint32_t in, uint32_t v,
-                                int sh, int sl,		// src
-                                int dh, int dl,		// dst
-                                int ch, int cl,		// clear
-                                int dither)
-{
-	const int sbits = sh-sl;
-	const int dbits = dh-dl;
-    
-	assert(sbits>=dbits);
-
-
-    if (sbits>dbits) {
-        if (dither>=0) {
-            v -= (v>>dbits);				// fix up
-            const int shift = (GGL_DITHER_BITS - (sbits-dbits));
-            if (shift >= 0)   v += (dither >> shift) << sl;
-            else              v += (dither << (-shift)) << sl;
-        } else {
-            // don't do that right now, so we can reproduce the same
-            // artifacts we get on ARM (Where we don't do this)
-            // -> this is not really needed if we don't dither
-            //if (dBits > 1) { // result already OK if dBits==1
-            //    v -= (v>>dbits);				// fix up
-            //    v += 1 << ((sbits-dbits)-1);	// rounding
-            //}
-        }
-    }
-
-
-	// we need to clear the high bits of the source
-	if (ch) {
-		v <<= 32-sh;
-		sl += 32-sh;
-        sh = 32;
-	}
-	
-	if (dl) {
-		if (cl || (sbits>dbits)) {
-			v >>= sh-dbits;
-			sl = 0;
-			sh = dbits;
-            in |= v<<dl;
-		} else {
-			// sbits==dbits and we don't need to clean the lower bits
-			// so we just have to shift the component to the right location
-            int shift = dh-sh;
-            in |= v<<shift;
-		}
-	} else {
-		// destination starts at bit 0
-		// ie: sh-dh == sh-dbits
-		int shift = sh-dh;
-		if (shift > 0)      in |= v>>shift;
-		else if (shift < 0) in |= v<<shift;
-		else                in |= v;
-	}
-	return in;
-}
-
-// ----------------------------------------------------------------------------
-}; // namespace android
diff --git a/libpixelflinger/buffer.h b/libpixelflinger/buffer.h
deleted file mode 100644
index 9c9e4bc..0000000
--- a/libpixelflinger/buffer.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* libs/pixelflinger/buffer.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_GGL_TEXTURE_H
-#define ANDROID_GGL_TEXTURE_H
-
-#include <private/pixelflinger/ggl_context.h>
-
-namespace android {
-
-void ggl_init_texture(context_t* c);
-
-void ggl_set_surface(context_t* c, surface_t* dst, const GGLSurface* src);
-
-void ggl_pick_texture(context_t* c);
-void ggl_pick_cb(context_t* c);
-
-uint32_t ggl_expand(uint32_t v, int sbits, int dbits);
-uint32_t ggl_pack_color(context_t* c, int32_t format,
-            GGLcolor r, GGLcolor g, GGLcolor b, GGLcolor a);
-
-}; // namespace android
-
-#endif // ANDROID_GGL_TEXTURE_H
diff --git a/libpixelflinger/clear.cpp b/libpixelflinger/clear.cpp
deleted file mode 100644
index b962456..0000000
--- a/libpixelflinger/clear.cpp
+++ /dev/null
@@ -1,171 +0,0 @@
-/* libs/pixelflinger/clear.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include <cutils/memory.h>
-
-#include "clear.h"
-#include "buffer.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-static void ggl_clear(void* c, GGLbitfield mask);
-static void ggl_clearColorx(void* c,
-        GGLclampx r, GGLclampx g, GGLclampx b, GGLclampx a);        
-static void ggl_clearDepthx(void* c, GGLclampx depth);
-static void ggl_clearStencil(void* c, GGLint s);
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_clear(context_t* c)
-{
-    GGLContext& procs = *(GGLContext*)c;
-    GGL_INIT_PROC(procs, clear);
-    GGL_INIT_PROC(procs, clearColorx);
-    GGL_INIT_PROC(procs, clearDepthx);
-    GGL_INIT_PROC(procs, clearStencil);
-    c->state.clear.dirty =  GGL_STENCIL_BUFFER_BIT |
-                            GGL_COLOR_BUFFER_BIT |
-                            GGL_DEPTH_BUFFER_BIT;
-    c->state.clear.depth = FIXED_ONE;
-}
-
-// ----------------------------------------------------------------------------
-
-static void memset2d(context_t* c, const surface_t& s, uint32_t packed,
-        uint32_t l, uint32_t t, uint32_t w, uint32_t h)
-{
-    const uint32_t size = c->formats[s.format].size;
-    const int32_t stride = s.stride * size;
-    uint8_t* dst = (uint8_t*)s.data + (l + t*s.stride)*size;
-    w *= size;
-
-    if (ggl_likely(int32_t(w) == stride)) {
-        // clear the whole thing in one call
-        w *= h;
-        h = 1;
-    }
-
-    switch (size) {
-    case 1:
-        do {
-            memset(dst, packed, w);
-            dst += stride;
-        } while(--h);
-        break;
-    case 2:
-        do {
-            android_memset16((uint16_t*)dst, packed, w);
-            dst += stride;
-        } while(--h);
-        break;
-    case 3: // XXX: 24-bit clear.
-        break;
-    case 4:
-        do {
-            android_memset32((uint32_t*)dst, packed, w);
-            dst += stride;
-        } while(--h);
-        break;
-    }    
-}
-
-static inline GGLfixed fixedToZ(GGLfixed z) {
-    return GGLfixed(((int64_t(z) << 16) - z) >> 16);
-}
-
-static void ggl_clear(void* con, GGLbitfield mask)
-{
-    GGL_CONTEXT(c, con);
-
-    // XXX: rgba-dithering, rgba-masking
-    // XXX: handle all formats of Z and S
-
-    const uint32_t l = c->state.scissor.left;
-    const uint32_t t = c->state.scissor.top;
-    uint32_t w = c->state.scissor.right - l;
-    uint32_t h = c->state.scissor.bottom - t;
-
-    if (!w || !h)
-        return;
-
-    // unexsiting buffers have no effect...
-    if (c->state.buffers.color.format == 0)
-        mask &= ~GGL_COLOR_BUFFER_BIT;
-
-    if (c->state.buffers.depth.format == 0)
-        mask &= ~GGL_DEPTH_BUFFER_BIT;
-
-    if (c->state.buffers.stencil.format == 0)
-        mask &= ~GGL_STENCIL_BUFFER_BIT;
-
-    if (mask & GGL_COLOR_BUFFER_BIT) {
-        if (c->state.clear.dirty & GGL_COLOR_BUFFER_BIT) {
-            c->state.clear.dirty &= ~GGL_COLOR_BUFFER_BIT;
-
-            uint32_t colorPacked = ggl_pack_color(c,
-                    c->state.buffers.color.format,
-                    gglFixedToIteratedColor(c->state.clear.r),
-                    gglFixedToIteratedColor(c->state.clear.g),
-                    gglFixedToIteratedColor(c->state.clear.b),
-                    gglFixedToIteratedColor(c->state.clear.a));
-
-            c->state.clear.colorPacked = GGL_HOST_TO_RGBA(colorPacked);
-        }
-        const uint32_t packed = c->state.clear.colorPacked;
-        memset2d(c, c->state.buffers.color, packed, l, t, w, h);
-    }
-    if (mask & GGL_DEPTH_BUFFER_BIT) {
-        if (c->state.clear.dirty & GGL_DEPTH_BUFFER_BIT) {
-            c->state.clear.dirty &= ~GGL_DEPTH_BUFFER_BIT;
-            uint32_t depth = fixedToZ(c->state.clear.depth);
-            c->state.clear.depthPacked = (depth<<16)|depth;
-        }
-        const uint32_t packed = c->state.clear.depthPacked;
-        memset2d(c, c->state.buffers.depth, packed, l, t, w, h);
-    }
-
-    // XXX: do stencil buffer
-}
-
-static void ggl_clearColorx(void* con,
-        GGLclampx r, GGLclampx g, GGLclampx b, GGLclampx a)
-{
-    GGL_CONTEXT(c, con);
-    c->state.clear.r = gglClampx(r);
-    c->state.clear.g = gglClampx(g);
-    c->state.clear.b = gglClampx(b);
-    c->state.clear.a = gglClampx(a);
-    c->state.clear.dirty |= GGL_COLOR_BUFFER_BIT;
-}
-
-static void ggl_clearDepthx(void* con, GGLclampx depth)
-{
-    GGL_CONTEXT(c, con);
-    c->state.clear.depth = gglClampx(depth);
-    c->state.clear.dirty |= GGL_DEPTH_BUFFER_BIT;
-}
-
-static void ggl_clearStencil(void* con, GGLint s)
-{
-    GGL_CONTEXT(c, con);
-    c->state.clear.stencil = s;
-    c->state.clear.dirty |= GGL_STENCIL_BUFFER_BIT;
-}
-
-}; // namespace android
diff --git a/libpixelflinger/clear.h b/libpixelflinger/clear.h
deleted file mode 100644
index b071df0..0000000
--- a/libpixelflinger/clear.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/* libs/pixelflinger/clear.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#ifndef ANDROID_GGL_CLEAR_H
-#define ANDROID_GGL_CLEAR_H
-
-#include <pixelflinger/pixelflinger.h>
-#include <private/pixelflinger/ggl_context.h>
-
-namespace android {
-
-void ggl_init_clear(context_t* c);
-
-}; // namespace android
-
-#endif // ANDROID_GGL_CLEAR_H
diff --git a/libpixelflinger/codeflinger/ARMAssembler.cpp b/libpixelflinger/codeflinger/ARMAssembler.cpp
deleted file mode 100644
index f47b6e4..0000000
--- a/libpixelflinger/codeflinger/ARMAssembler.cpp
+++ /dev/null
@@ -1,579 +0,0 @@
-/* libs/pixelflinger/codeflinger/ARMAssembler.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "ARMAssembler"
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <cutils/properties.h>
-#include <log/log.h>
-#include <private/pixelflinger/ggl_context.h>
-
-#include "ARMAssembler.h"
-#include "CodeCache.h"
-#include "disassem.h"
-
-// ----------------------------------------------------------------------------
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark ARMAssembler...
-#endif
-
-ARMAssembler::ARMAssembler(const sp<Assembly>& assembly)
-    :   ARMAssemblerInterface(),
-        mAssembly(assembly)
-{
-    mBase = mPC = (uint32_t *)assembly->base();
-    mDuration = ggl_system_time();
-}
-
-ARMAssembler::~ARMAssembler()
-{
-}
-
-uint32_t* ARMAssembler::pc() const
-{
-    return mPC;
-}
-
-uint32_t* ARMAssembler::base() const
-{
-    return mBase;
-}
-
-void ARMAssembler::reset()
-{
-    mBase = mPC = (uint32_t *)mAssembly->base();
-    mBranchTargets.clear();
-    mLabels.clear();
-    mLabelsInverseMapping.clear();
-    mComments.clear();
-}
-
-int ARMAssembler::getCodegenArch()
-{
-    return CODEGEN_ARCH_ARM;
-}
-
-// ----------------------------------------------------------------------------
-
-void ARMAssembler::disassemble(const char* name)
-{
-    if (name) {
-        printf("%s:\n", name);
-    }
-    size_t count = pc()-base();
-    uint32_t* i = base();
-    while (count--) {
-        ssize_t label = mLabelsInverseMapping.indexOfKey(i);
-        if (label >= 0) {
-            printf("%s:\n", mLabelsInverseMapping.valueAt(label));
-        }
-        ssize_t comment = mComments.indexOfKey(i);
-        if (comment >= 0) {
-            printf("; %s\n", mComments.valueAt(comment));
-        }
-        printf("%08x:    %08x    ", uintptr_t(i), int(i[0]));
-        ::disassemble((uintptr_t)i);
-        i++;
-    }
-}
-
-void ARMAssembler::comment(const char* string)
-{
-    mComments.add(mPC, string);
-}
-
-void ARMAssembler::label(const char* theLabel)
-{
-    mLabels.add(theLabel, mPC);
-    mLabelsInverseMapping.add(mPC, theLabel);
-}
-
-void ARMAssembler::B(int cc, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (cc<<28) | (0xA<<24) | 0;
-}
-
-void ARMAssembler::BL(int cc, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (cc<<28) | (0xB<<24) | 0;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Prolog/Epilog & Generate...
-#endif
-
-
-void ARMAssembler::prolog()
-{
-    // write dummy prolog code
-    mPrologPC = mPC;
-    STM(AL, FD, SP, 1, LSAVED);
-}
-
-void ARMAssembler::epilog(uint32_t touched)
-{
-    touched &= LSAVED;
-    if (touched) {
-        // write prolog code
-        uint32_t* pc = mPC;
-        mPC = mPrologPC;
-        STM(AL, FD, SP, 1, touched | LLR);
-        mPC = pc;
-        // write epilog code
-        LDM(AL, FD, SP, 1, touched | LLR);
-        BX(AL, LR);
-    } else {   // heh, no registers to save!
-        // write prolog code
-        uint32_t* pc = mPC;
-        mPC = mPrologPC;
-        MOV(AL, 0, R0, R0); // NOP
-        mPC = pc;
-        // write epilog code
-        BX(AL, LR);
-    }
-}
-
-int ARMAssembler::generate(const char* name)
-{
-    // fixup all the branches
-    size_t count = mBranchTargets.size();
-    while (count--) {
-        const branch_target_t& bt = mBranchTargets[count];
-        uint32_t* target_pc = mLabels.valueFor(bt.label);
-        LOG_ALWAYS_FATAL_IF(!target_pc,
-                "error resolving branch targets, target_pc is null");
-        int32_t offset = int32_t(target_pc - (bt.pc+2));
-        *bt.pc |= offset & 0xFFFFFF;
-    }
-
-    mAssembly->resize( int(pc()-base())*4 );
-
-    // the instruction cache is flushed by CodeCache
-    const int64_t duration = ggl_system_time() - mDuration;
-    const char * const format = "generated %s (%d ins) at [%p:%p] in %lld ns\n";
-    ALOGI(format, name, int(pc()-base()), base(), pc(), duration);
-
-    char value[PROPERTY_VALUE_MAX];
-    property_get("debug.pf.disasm", value, "0");
-    if (atoi(value) != 0) {
-        printf(format, name, int(pc()-base()), base(), pc(), duration);
-        disassemble(name);
-    }
-
-    return OK;
-}
-
-uint32_t* ARMAssembler::pcForLabel(const char* label)
-{
-    return mLabels.valueFor(label);
-}
-
-// ----------------------------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Data Processing...
-#endif
-
-void ARMAssembler::dataProcessing(int opcode, int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    *mPC++ = (cc<<28) | (opcode<<21) | (s<<20) | (Rn<<16) | (Rd<<12) | Op2;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Multiply...
-#endif
-
-// multiply...
-void ARMAssembler::MLA(int cc, int s,
-        int Rd, int Rm, int Rs, int Rn) {
-    if (Rd == Rm) { int t = Rm; Rm=Rs; Rs=t; }
-    LOG_FATAL_IF(Rd==Rm, "MLA(r%u,r%u,r%u,r%u)", Rd,Rm,Rs,Rn);
-    *mPC++ =    (cc<<28) | (1<<21) | (s<<20) |
-                (Rd<<16) | (Rn<<12) | (Rs<<8) | 0x90 | Rm;
-}
-void ARMAssembler::MUL(int cc, int s,
-        int Rd, int Rm, int Rs) {
-    if (Rd == Rm) { int t = Rm; Rm=Rs; Rs=t; }
-    LOG_FATAL_IF(Rd==Rm, "MUL(r%u,r%u,r%u)", Rd,Rm,Rs);
-    *mPC++ = (cc<<28) | (s<<20) | (Rd<<16) | (Rs<<8) | 0x90 | Rm;
-}
-void ARMAssembler::UMULL(int cc, int s,
-        int RdLo, int RdHi, int Rm, int Rs) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "UMULL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    *mPC++ =    (cc<<28) | (1<<23) | (s<<20) |
-                (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-}
-void ARMAssembler::UMUAL(int cc, int s,
-        int RdLo, int RdHi, int Rm, int Rs) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "UMUAL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    *mPC++ =    (cc<<28) | (1<<23) | (1<<21) | (s<<20) |
-                (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-}
-void ARMAssembler::SMULL(int cc, int s,
-        int RdLo, int RdHi, int Rm, int Rs) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "SMULL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    *mPC++ =    (cc<<28) | (1<<23) | (1<<22) | (s<<20) |
-                (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-}
-void ARMAssembler::SMUAL(int cc, int s,
-        int RdLo, int RdHi, int Rm, int Rs) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "SMUAL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    *mPC++ =    (cc<<28) | (1<<23) | (1<<22) | (1<<21) | (s<<20) |
-                (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Branches...
-#endif
-
-// branches...
-void ARMAssembler::B(int cc, uint32_t* pc)
-{
-    int32_t offset = int32_t(pc - (mPC+2));
-    *mPC++ = (cc<<28) | (0xA<<24) | (offset & 0xFFFFFF);
-}
-
-void ARMAssembler::BL(int cc, uint32_t* pc)
-{
-    int32_t offset = int32_t(pc - (mPC+2));
-    *mPC++ = (cc<<28) | (0xB<<24) | (offset & 0xFFFFFF);
-}
-
-void ARMAssembler::BX(int cc, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x12FFF10 | Rn;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Data Transfer...
-#endif
-
-// data transfert...
-void ARMAssembler::LDR(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<26) | (1<<20) | (Rn<<16) | (Rd<<12) | offset;
-}
-void ARMAssembler::LDRB(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<26) | (1<<22) | (1<<20) | (Rn<<16) | (Rd<<12) | offset;
-}
-void ARMAssembler::STR(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<26) | (Rn<<16) | (Rd<<12) | offset;
-}
-void ARMAssembler::STRB(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<26) | (1<<22) | (Rn<<16) | (Rd<<12) | offset;
-}
-
-void ARMAssembler::LDRH(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<20) | (Rn<<16) | (Rd<<12) | 0xB0 | offset;
-}
-void ARMAssembler::LDRSB(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<20) | (Rn<<16) | (Rd<<12) | 0xD0 | offset;
-}
-void ARMAssembler::LDRSH(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (1<<20) | (Rn<<16) | (Rd<<12) | 0xF0 | offset;
-}
-void ARMAssembler::STRH(int cc, int Rd, int Rn, uint32_t offset) {
-    *mPC++ = (cc<<28) | (Rn<<16) | (Rd<<12) | 0xB0 | offset;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Block Data Transfer...
-#endif
-
-// block data transfer...
-void ARMAssembler::LDM(int cc, int dir,
-        int Rn, int W, uint32_t reg_list)
-{   //                    ED FD EA FA      IB IA DB DA
-    const uint8_t P[8] = { 1, 0, 1, 0,      1, 0, 1, 0 };
-    const uint8_t U[8] = { 1, 1, 0, 0,      1, 1, 0, 0 };
-    *mPC++ = (cc<<28) | (4<<25) | (uint32_t(P[dir])<<24) |
-            (uint32_t(U[dir])<<23) | (1<<20) | (W<<21) | (Rn<<16) | reg_list;
-}
-
-void ARMAssembler::STM(int cc, int dir,
-        int Rn, int W, uint32_t reg_list)
-{   //                    ED FD EA FA      IB IA DB DA
-    const uint8_t P[8] = { 0, 1, 0, 1,      1, 0, 1, 0 };
-    const uint8_t U[8] = { 0, 0, 1, 1,      1, 1, 0, 0 };
-    *mPC++ = (cc<<28) | (4<<25) | (uint32_t(P[dir])<<24) |
-            (uint32_t(U[dir])<<23) | (0<<20) | (W<<21) | (Rn<<16) | reg_list;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Special...
-#endif
-
-// special...
-void ARMAssembler::SWP(int cc, int Rn, int Rd, int Rm) {
-    *mPC++ = (cc<<28) | (2<<23) | (Rn<<16) | (Rd << 12) | 0x90 | Rm;
-}
-void ARMAssembler::SWPB(int cc, int Rn, int Rd, int Rm) {
-    *mPC++ = (cc<<28) | (2<<23) | (1<<22) | (Rn<<16) | (Rd << 12) | 0x90 | Rm;
-}
-void ARMAssembler::SWI(int cc, uint32_t comment) {
-    *mPC++ = (cc<<28) | (0xF<<24) | comment;
-}
-
-#if 0
-#pragma mark -
-#pragma mark DSP instructions...
-#endif
-
-// DSP instructions...
-void ARMAssembler::PLD(int Rn, uint32_t offset) {
-    LOG_ALWAYS_FATAL_IF(!((offset&(1<<24)) && !(offset&(1<<21))),
-                        "PLD only P=1, W=0");
-    *mPC++ = 0xF550F000 | (Rn<<16) | offset;
-}
-
-void ARMAssembler::CLZ(int cc, int Rd, int Rm)
-{
-    *mPC++ = (cc<<28) | 0x16F0F10| (Rd<<12) | Rm;
-}
-
-void ARMAssembler::QADD(int cc,  int Rd, int Rm, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x1000050 | (Rn<<16) | (Rd<<12) | Rm;
-}
-
-void ARMAssembler::QDADD(int cc,  int Rd, int Rm, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x1400050 | (Rn<<16) | (Rd<<12) | Rm;
-}
-
-void ARMAssembler::QSUB(int cc,  int Rd, int Rm, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x1200050 | (Rn<<16) | (Rd<<12) | Rm;
-}
-
-void ARMAssembler::QDSUB(int cc,  int Rd, int Rm, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x1600050 | (Rn<<16) | (Rd<<12) | Rm;
-}
-
-void ARMAssembler::SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs)
-{
-    *mPC++ = (cc<<28) | 0x1600080 | (Rd<<16) | (Rs<<8) | (xy<<4) | Rm;
-}
-
-void ARMAssembler::SMULW(int cc, int y,
-                int Rd, int Rm, int Rs)
-{
-    *mPC++ = (cc<<28) | 0x12000A0 | (Rd<<16) | (Rs<<8) | (y<<4) | Rm;
-}
-
-void ARMAssembler::SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x1000080 | (Rd<<16) | (Rn<<12) | (Rs<<8) | (xy<<4) | Rm;
-}
-
-void ARMAssembler::SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm)
-{
-    *mPC++ = (cc<<28) | 0x1400080 | (RdHi<<16) | (RdLo<<12) | (Rs<<8) | (xy<<4) | Rm;
-}
-
-void ARMAssembler::SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn)
-{
-    *mPC++ = (cc<<28) | 0x1200080 | (Rd<<16) | (Rn<<12) | (Rs<<8) | (y<<4) | Rm;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Byte/half word extract and extend (ARMv6+ only)...
-#endif
-
-void ARMAssembler::UXTB16(int cc, int Rd, int Rm, int rotate)
-{
-    *mPC++ = (cc<<28) | 0x6CF0070 | (Rd<<12) | ((rotate >> 3) << 10) | Rm;
-}
-#if 0
-#pragma mark -
-#pragma mark Bit manipulation (ARMv7+ only)...
-#endif
-
-// Bit manipulation (ARMv7+ only)...
-void ARMAssembler::UBFX(int cc, int Rd, int Rn, int lsb, int width)
-{
-    *mPC++ = (cc<<28) | 0x7E00000 | ((width-1)<<16) | (Rd<<12) | (lsb<<7) | 0x50 | Rn;
-}
-
-#if 0
-#pragma mark -
-#pragma mark Addressing modes...
-#endif
-
-int ARMAssembler::buildImmediate(
-        uint32_t immediate, uint32_t& rot, uint32_t& imm)
-{
-    rot = 0;
-    imm = immediate;
-    if (imm > 0x7F) { // skip the easy cases
-        while (!(imm&3)  || (imm&0xFC000000)) {
-            uint32_t newval;
-            newval = imm >> 2;
-            newval |= (imm&3) << 30;
-            imm = newval;
-            rot += 2;
-            if (rot == 32) {
-                rot = 0;
-                break;
-            }
-        }
-    }
-    rot = (16 - (rot>>1)) & 0xF;
-
-    if (imm>=0x100)
-        return -EINVAL;
-
-    if (((imm>>(rot<<1)) | (imm<<(32-(rot<<1)))) != immediate)
-        return -1;
-
-    return 0;
-}
-
-// shifters...
-
-bool ARMAssembler::isValidImmediate(uint32_t immediate)
-{
-    uint32_t rot, imm;
-    return buildImmediate(immediate, rot, imm) == 0;
-}
-
-uint32_t ARMAssembler::imm(uint32_t immediate)
-{
-    uint32_t rot, imm;
-    int err = buildImmediate(immediate, rot, imm);
-
-    LOG_ALWAYS_FATAL_IF(err==-EINVAL,
-                        "immediate %08x cannot be encoded",
-                        immediate);
-
-    LOG_ALWAYS_FATAL_IF(err,
-                        "immediate (%08x) encoding bogus!",
-                        immediate);
-
-    return (1<<25) | (rot<<8) | imm;
-}
-
-uint32_t ARMAssembler::reg_imm(int Rm, int type, uint32_t shift)
-{
-    return ((shift&0x1F)<<7) | ((type&0x3)<<5) | (Rm&0xF);
-}
-
-uint32_t ARMAssembler::reg_rrx(int Rm)
-{
-    return (ROR<<5) | (Rm&0xF);
-}
-
-uint32_t ARMAssembler::reg_reg(int Rm, int type, int Rs)
-{
-    return ((Rs&0xF)<<8) | ((type&0x3)<<5) | (1<<4) | (Rm&0xF);
-}
-
-// addressing modes...
-// LDR(B)/STR(B)/PLD (immediate and Rm can be negative, which indicate U=0)
-uint32_t ARMAssembler::immed12_pre(int32_t immed12, int W)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-    return (1<<24) | (((uint32_t(immed12)>>31)^1)<<23) |
-            ((W&1)<<21) | (abs(immed12)&0x7FF);
-}
-
-uint32_t ARMAssembler::immed12_post(int32_t immed12)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-
-    return (((uint32_t(immed12)>>31)^1)<<23) | (abs(immed12)&0x7FF);
-}
-
-uint32_t ARMAssembler::reg_scale_pre(int Rm, int type,
-        uint32_t shift, int W)
-{
-    return  (1<<25) | (1<<24) |
-            (((uint32_t(Rm)>>31)^1)<<23) | ((W&1)<<21) |
-            reg_imm(abs(Rm), type, shift);
-}
-
-uint32_t ARMAssembler::reg_scale_post(int Rm, int type, uint32_t shift)
-{
-    return (1<<25) | (((uint32_t(Rm)>>31)^1)<<23) | reg_imm(abs(Rm), type, shift);
-}
-
-// LDRH/LDRSB/LDRSH/STRH (immediate and Rm can be negative, which indicate U=0)
-uint32_t ARMAssembler::immed8_pre(int32_t immed8, int W)
-{
-    uint32_t offset = abs(immed8);
-
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-
-    return  (1<<24) | (1<<22) | (((uint32_t(immed8)>>31)^1)<<23) |
-            ((W&1)<<21) | (((offset&0xF0)<<4)|(offset&0xF));
-}
-
-uint32_t ARMAssembler::immed8_post(int32_t immed8)
-{
-    uint32_t offset = abs(immed8);
-
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-
-    return (1<<22) | (((uint32_t(immed8)>>31)^1)<<23) |
-            (((offset&0xF0)<<4) | (offset&0xF));
-}
-
-uint32_t ARMAssembler::reg_pre(int Rm, int W)
-{
-    return (1<<24) | (((uint32_t(Rm)>>31)^1)<<23) | ((W&1)<<21) | (abs(Rm)&0xF);
-}
-
-uint32_t ARMAssembler::reg_post(int Rm)
-{
-    return (((uint32_t(Rm)>>31)^1)<<23) | (abs(Rm)&0xF);
-}
-
-}; // namespace android
diff --git a/libpixelflinger/codeflinger/ARMAssembler.h b/libpixelflinger/codeflinger/ARMAssembler.h
deleted file mode 100644
index 76acf7e..0000000
--- a/libpixelflinger/codeflinger/ARMAssembler.h
+++ /dev/null
@@ -1,187 +0,0 @@
-/* libs/pixelflinger/codeflinger/ARMAssembler.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#ifndef ANDROID_ARMASSEMBLER_H
-#define ANDROID_ARMASSEMBLER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "tinyutils/smartpointer.h"
-#include "utils/Vector.h"
-#include "utils/KeyedVector.h"
-
-#include "ARMAssemblerInterface.h"
-#include "CodeCache.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-class ARMAssembler : public ARMAssemblerInterface
-{
-public:
-    explicit    ARMAssembler(const sp<Assembly>& assembly);
-    virtual     ~ARMAssembler();
-
-    uint32_t*   base() const;
-    uint32_t*   pc() const;
-
-
-    void        disassemble(const char* name);
-
-    // ------------------------------------------------------------------------
-    // ARMAssemblerInterface...
-    // ------------------------------------------------------------------------
-
-    virtual void    reset();
-
-    virtual int     generate(const char* name);
-    virtual int     getCodegenArch();
-
-    virtual void    prolog();
-    virtual void    epilog(uint32_t touched);
-    virtual void    comment(const char* string);
-
-
-    // -----------------------------------------------------------------------
-    // shifters and addressing modes
-    // -----------------------------------------------------------------------
-
-    // shifters...
-    virtual bool        isValidImmediate(uint32_t immed);
-    virtual int         buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm);
-
-    virtual uint32_t    imm(uint32_t immediate);
-    virtual uint32_t    reg_imm(int Rm, int type, uint32_t shift);
-    virtual uint32_t    reg_rrx(int Rm);
-    virtual uint32_t    reg_reg(int Rm, int type, int Rs);
-
-    // addressing modes...
-    // LDR(B)/STR(B)/PLD
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed12_pre(int32_t immed12, int W=0);
-    virtual uint32_t    immed12_post(int32_t immed12);
-    virtual uint32_t    reg_scale_pre(int Rm, int type=0, uint32_t shift=0, int W=0);
-    virtual uint32_t    reg_scale_post(int Rm, int type=0, uint32_t shift=0);
-
-    // LDRH/LDRSB/LDRSH/STRH
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed8_pre(int32_t immed8, int W=0);
-    virtual uint32_t    immed8_post(int32_t immed8);
-    virtual uint32_t    reg_pre(int Rm, int W=0);
-    virtual uint32_t    reg_post(int Rm);
-
-
-    virtual void    dataProcessing(int opcode, int cc, int s,
-                                int Rd, int Rn,
-                                uint32_t Op2);
-    virtual void MLA(int cc, int s,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void MUL(int cc, int s,
-                int Rd, int Rm, int Rs);
-    virtual void UMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void UMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-
-    virtual void B(int cc, uint32_t* pc);
-    virtual void BL(int cc, uint32_t* pc);
-    virtual void BX(int cc, int Rn);
-    virtual void label(const char* theLabel);
-    virtual void B(int cc, const char* label);
-    virtual void BL(int cc, const char* label);
-
-    virtual uint32_t* pcForLabel(const char* label);
-
-    virtual void LDR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void LDRB(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void STR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void STRB(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void LDRH (int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void LDRSB(int cc, int Rd, 
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void LDRSH(int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void STRH (int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0));
-
-
-    virtual void LDM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-    virtual void STM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-
-    virtual void SWP(int cc, int Rn, int Rd, int Rm);
-    virtual void SWPB(int cc, int Rn, int Rd, int Rm);
-    virtual void SWI(int cc, uint32_t comment);
-
-    virtual void PLD(int Rn, uint32_t offset);
-    virtual void CLZ(int cc, int Rd, int Rm);
-    virtual void QADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QDADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void QDSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs);
-    virtual void SMULW(int cc, int y,
-                int Rd, int Rm, int Rs);
-    virtual void SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm);
-    virtual void SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void UXTB16(int cc, int Rd, int Rm, int rotate);
-    virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width);
-
-private:
-                ARMAssembler(const ARMAssembler& rhs);
-                ARMAssembler& operator = (const ARMAssembler& rhs);
-
-    sp<Assembly>    mAssembly;
-    uint32_t*       mBase;
-    uint32_t*       mPC;
-    uint32_t*       mPrologPC;
-    int64_t         mDuration;
-    
-    struct branch_target_t {
-        inline branch_target_t() : label(0), pc(0) { }
-        inline branch_target_t(const char* l, uint32_t* p)
-            : label(l), pc(p) { }
-        const char* label;
-        uint32_t*   pc;
-    };
-    
-    Vector<branch_target_t>                 mBranchTargets;
-    KeyedVector< const char*, uint32_t* >   mLabels;
-    KeyedVector< uint32_t*, const char* >   mLabelsInverseMapping;
-    KeyedVector< uint32_t*, const char* >   mComments;
-};
-
-}; // namespace android
-
-#endif //ANDROID_ARMASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/ARMAssemblerInterface.cpp b/libpixelflinger/codeflinger/ARMAssemblerInterface.cpp
deleted file mode 100644
index c96cf4b..0000000
--- a/libpixelflinger/codeflinger/ARMAssemblerInterface.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-/* libs/pixelflinger/codeflinger/ARMAssemblerInterface.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-#define LOG_TAG "pixelflinger-code"
-
-#include <errno.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/types.h>
-
-#include <log/log.h>
-
-#include "ARMAssemblerInterface.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-ARMAssemblerInterface::~ARMAssemblerInterface()
-{
-}
-
-// --------------------------------------------------------------------
-
-// The following two functions are static and used for initializers
-// in the original ARM code. The above versions (without __), are now
-// virtual, and can be overridden in the MIPS code. But since these are
-// needed at initialization time, they must be static. Not thrilled with
-// this implementation, but it works...
-
-uint32_t ARMAssemblerInterface::__immed12_pre(int32_t immed12, int W)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-    return (1<<24) | (((uint32_t(immed12)>>31)^1)<<23) |
-            ((W&1)<<21) | (abs(immed12)&0x7FF);
-}
-
-uint32_t ARMAssemblerInterface::__immed8_pre(int32_t immed8, int W)
-{
-    uint32_t offset = abs(immed8);
-
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-
-    return  (1<<24) | (1<<22) | (((uint32_t(immed8)>>31)^1)<<23) |
-            ((W&1)<<21) | (((offset&0xF0)<<4)|(offset&0xF));
-}
-
-// The following four functions are required for address manipulation
-// These are virtual functions, which can be overridden by architectures
-// that need special handling of address values (e.g. 64-bit arch)
-
-void ARMAssemblerInterface::ADDR_LDR(int cc, int Rd,
-     int Rn, uint32_t offset)
-{
-    LDR(cc, Rd, Rn, offset);
-}
-void ARMAssemblerInterface::ADDR_STR(int cc, int Rd,
-     int Rn, uint32_t offset)
-{
-    STR(cc, Rd, Rn, offset);
-}
-void ARMAssemblerInterface::ADDR_ADD(int cc, int s,
-     int Rd, int Rn, uint32_t Op2)
-{
-    dataProcessing(opADD, cc, s, Rd, Rn, Op2);
-}
-void ARMAssemblerInterface::ADDR_SUB(int cc, int s,
-     int Rd, int Rn, uint32_t Op2)
-{
-    dataProcessing(opSUB, cc, s, Rd, Rn, Op2);
-}
-}; // namespace android
-
diff --git a/libpixelflinger/codeflinger/ARMAssemblerInterface.h b/libpixelflinger/codeflinger/ARMAssemblerInterface.h
deleted file mode 100644
index 72935ac..0000000
--- a/libpixelflinger/codeflinger/ARMAssemblerInterface.h
+++ /dev/null
@@ -1,349 +0,0 @@
-/* libs/pixelflinger/codeflinger/ARMAssemblerInterface.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_ARMASSEMBLER_INTERFACE_H
-#define ANDROID_ARMASSEMBLER_INTERFACE_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-class ARMAssemblerInterface
-{
-public:
-    virtual ~ARMAssemblerInterface();
-
-    enum {
-        EQ, NE, CS, CC, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL, NV,
-        HS = CS,
-        LO = CC
-    };
-    enum {
-        S = 1
-    };
-    enum {
-        LSL, LSR, ASR, ROR
-    };
-    enum {
-        ED, FD, EA, FA,
-        IB, IA, DB, DA
-    };
-    enum {
-        R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15,
-        SP = R13,
-        LR = R14,
-        PC = R15
-    };
-    enum {
-        #define LIST(rr) L##rr=1<<rr
-        LIST(R0), LIST(R1), LIST(R2), LIST(R3), LIST(R4), LIST(R5), LIST(R6),
-        LIST(R7), LIST(R8), LIST(R9), LIST(R10), LIST(R11), LIST(R12),
-        LIST(R13), LIST(R14), LIST(R15),
-        LIST(SP), LIST(LR), LIST(PC),
-        #undef LIST
-        LSAVED = LR4|LR5|LR6|LR7|LR8|LR9|LR10|LR11 | LLR
-    };
-
-    enum {
-        CODEGEN_ARCH_ARM = 1, CODEGEN_ARCH_MIPS, CODEGEN_ARCH_ARM64, CODEGEN_ARCH_MIPS64
-    };
-
-    // -----------------------------------------------------------------------
-    // shifters and addressing modes
-    // -----------------------------------------------------------------------
-
-    // these static versions are used for initializers on LDxx/STxx below
-    static uint32_t    __immed12_pre(int32_t immed12, int W=0);
-    static uint32_t    __immed8_pre(int32_t immed12, int W=0);
-
-    virtual bool        isValidImmediate(uint32_t immed) = 0;
-    virtual int         buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm) = 0;
-
-    virtual uint32_t    imm(uint32_t immediate) = 0;
-    virtual uint32_t    reg_imm(int Rm, int type, uint32_t shift) = 0;
-    virtual uint32_t    reg_rrx(int Rm) = 0;
-    virtual uint32_t    reg_reg(int Rm, int type, int Rs) = 0;
-
-    // addressing modes... 
-    // LDR(B)/STR(B)/PLD
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed12_pre(int32_t immed12, int W=0) = 0;
-    virtual uint32_t    immed12_post(int32_t immed12) = 0;
-    virtual uint32_t    reg_scale_pre(int Rm, int type=0, uint32_t shift=0, int W=0) = 0;
-    virtual uint32_t    reg_scale_post(int Rm, int type=0, uint32_t shift=0) = 0;
-
-    // LDRH/LDRSB/LDRSH/STRH
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed8_pre(int32_t immed8, int W=0) = 0;
-    virtual uint32_t    immed8_post(int32_t immed8) = 0;
-    virtual uint32_t    reg_pre(int Rm, int W=0) = 0;
-    virtual uint32_t    reg_post(int Rm) = 0;
-
-    // -----------------------------------------------------------------------
-    // basic instructions & code generation
-    // -----------------------------------------------------------------------
-
-    // generate the code
-    virtual void reset() = 0;
-    virtual int  generate(const char* name) = 0;
-    virtual void disassemble(const char* name) = 0;
-    virtual int  getCodegenArch() = 0;
-    
-    // construct prolog and epilog
-    virtual void prolog() = 0;
-    virtual void epilog(uint32_t touched) = 0;
-    virtual void comment(const char* string) = 0;
-
-    // data processing...
-    enum {
-        opAND, opEOR, opSUB, opRSB, opADD, opADC, opSBC, opRSC, 
-        opTST, opTEQ, opCMP, opCMN, opORR, opMOV, opBIC, opMVN,
-        opADD64, opSUB64
-    };
-
-    virtual void
-            dataProcessing( int opcode, int cc, int s,
-                            int Rd, int Rn,
-                            uint32_t Op2) = 0;
-    
-    // multiply...
-    virtual void MLA(int cc, int s,
-                int Rd, int Rm, int Rs, int Rn) = 0;
-    virtual void MUL(int cc, int s,
-                int Rd, int Rm, int Rs) = 0;
-    virtual void UMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs) = 0;
-    virtual void UMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs) = 0;
-    virtual void SMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs) = 0;
-    virtual void SMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs) = 0;
-
-    // branches...
-    virtual void B(int cc, uint32_t* pc) = 0;
-    virtual void BL(int cc, uint32_t* pc) = 0;
-    virtual void BX(int cc, int Rn) = 0;
-
-    virtual void label(const char* theLabel) = 0;
-    virtual void B(int cc, const char* label) = 0;
-    virtual void BL(int cc, const char* label) = 0;
-
-    // valid only after generate() has been called
-    virtual uint32_t* pcForLabel(const char* label) = 0;
-
-    // data transfer...
-    virtual void LDR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0)) = 0;
-    virtual void LDRB(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0)) = 0;
-    virtual void STR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0)) = 0;
-    virtual void STRB(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0)) = 0;
-
-    virtual void LDRH (int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0)) = 0;
-    virtual void LDRSB(int cc, int Rd, 
-                int Rn, uint32_t offset = __immed8_pre(0)) = 0;
-    virtual void LDRSH(int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0)) = 0;
-    virtual void STRH (int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0)) = 0;
-
-    // block data transfer...
-    virtual void LDM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list) = 0;
-    virtual void STM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list) = 0;
-
-    // special...
-    virtual void SWP(int cc, int Rn, int Rd, int Rm) = 0;
-    virtual void SWPB(int cc, int Rn, int Rd, int Rm) = 0;
-    virtual void SWI(int cc, uint32_t comment) = 0;
-
-    // DSP instructions...
-    enum {
-        // B=0, T=1
-        //     yx
-        xyBB = 0, // 0000,
-        xyTB = 2, // 0010,
-        xyBT = 4, // 0100,
-        xyTT = 6, // 0110,
-        yB   = 0, // 0000,
-        yT   = 4, // 0100
-    };
-
-    virtual void PLD(int Rn, uint32_t offset) = 0;
-
-    virtual void CLZ(int cc, int Rd, int Rm) = 0;
-    
-    virtual void QADD(int cc, int Rd, int Rm, int Rn) = 0;
-    virtual void QDADD(int cc, int Rd, int Rm, int Rn) = 0;
-    virtual void QSUB(int cc, int Rd, int Rm, int Rn) = 0;
-    virtual void QDSUB(int cc, int Rd, int Rm, int Rn) = 0;
-    
-    virtual void SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs) = 0;
-    virtual void SMULW(int cc, int y,
-                int Rd, int Rm, int Rs) = 0;
-    virtual void SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn) = 0;
-    virtual void SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm) = 0;
-    virtual void SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn) = 0;
-
-    // byte/half word extract...
-    virtual void UXTB16(int cc, int Rd, int Rm, int rotate) = 0;
-
-    // bit manipulation...
-    virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width) = 0;
-
-    // -----------------------------------------------------------------------
-    // convenience...
-    // -----------------------------------------------------------------------
-    inline void
-    ADC(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opADC, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    ADD(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opADD, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    AND(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opAND, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    BIC(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opBIC, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    EOR(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opEOR, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    MOV(int cc, int s, int Rd, uint32_t Op2) {
-        dataProcessing(opMOV, cc, s, Rd, 0, Op2);
-    }
-    inline void
-    MVN(int cc, int s, int Rd, uint32_t Op2) {
-        dataProcessing(opMVN, cc, s, Rd, 0, Op2);
-    }
-    inline void
-    ORR(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opORR, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    RSB(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opRSB, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    RSC(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opRSC, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    SBC(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opSBC, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    SUB(int cc, int s, int Rd, int Rn, uint32_t Op2) {
-        dataProcessing(opSUB, cc, s, Rd, Rn, Op2);
-    }
-    inline void
-    TEQ(int cc, int Rn, uint32_t Op2) {
-        dataProcessing(opTEQ, cc, 1, 0, Rn, Op2);
-    }
-    inline void
-    TST(int cc, int Rn, uint32_t Op2) {
-        dataProcessing(opTST, cc, 1, 0, Rn, Op2);
-    }
-    inline void
-    CMP(int cc, int Rn, uint32_t Op2) {
-        dataProcessing(opCMP, cc, 1, 0, Rn, Op2);
-    }
-    inline void
-    CMN(int cc, int Rn, uint32_t Op2) {
-        dataProcessing(opCMN, cc, 1, 0, Rn, Op2);
-    }
-
-    inline void SMULBB(int cc, int Rd, int Rm, int Rs) {
-        SMUL(cc, xyBB, Rd, Rm, Rs);    }
-    inline void SMULTB(int cc, int Rd, int Rm, int Rs) {
-        SMUL(cc, xyTB, Rd, Rm, Rs);    }
-    inline void SMULBT(int cc, int Rd, int Rm, int Rs) {
-        SMUL(cc, xyBT, Rd, Rm, Rs);    }
-    inline void SMULTT(int cc, int Rd, int Rm, int Rs) {
-        SMUL(cc, xyTT, Rd, Rm, Rs);    }
-
-    inline void SMULWB(int cc, int Rd, int Rm, int Rs) {
-        SMULW(cc, yB, Rd, Rm, Rs);    }
-    inline void SMULWT(int cc, int Rd, int Rm, int Rs) {
-        SMULW(cc, yT, Rd, Rm, Rs);    }
-
-    inline void
-    SMLABB(int cc, int Rd, int Rm, int Rs, int Rn) {
-        SMLA(cc, xyBB, Rd, Rm, Rs, Rn);    }
-    inline void
-    SMLATB(int cc, int Rd, int Rm, int Rs, int Rn) {
-        SMLA(cc, xyTB, Rd, Rm, Rs, Rn);    }
-    inline void
-    SMLABT(int cc, int Rd, int Rm, int Rs, int Rn) {
-        SMLA(cc, xyBT, Rd, Rm, Rs, Rn);    }
-    inline void
-    SMLATT(int cc, int Rd, int Rm, int Rs, int Rn) {
-        SMLA(cc, xyTT, Rd, Rm, Rs, Rn);    }
-
-    inline void
-    SMLALBB(int cc, int RdHi, int RdLo, int Rs, int Rm) {
-        SMLAL(cc, xyBB, RdHi, RdLo, Rs, Rm);    }
-    inline void
-    SMLALTB(int cc, int RdHi, int RdLo, int Rs, int Rm) {
-        SMLAL(cc, xyTB, RdHi, RdLo, Rs, Rm);    }
-    inline void
-    SMLALBT(int cc, int RdHi, int RdLo, int Rs, int Rm) {
-        SMLAL(cc, xyBT, RdHi, RdLo, Rs, Rm);    }
-    inline void
-    SMLALTT(int cc, int RdHi, int RdLo, int Rs, int Rm) {
-        SMLAL(cc, xyTT, RdHi, RdLo, Rs, Rm);    }
-
-    inline void
-    SMLAWB(int cc, int Rd, int Rm, int Rs, int Rn) {
-        SMLAW(cc, yB, Rd, Rm, Rs, Rn);    }
-    inline void
-    SMLAWT(int cc, int Rd, int Rm, int Rs, int Rn) {
-        SMLAW(cc, yT, Rd, Rm, Rs, Rn);    }
-
-    // Address loading/storing/manipulation
-    virtual void ADDR_LDR(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void ADDR_STR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void ADDR_ADD(int cc, int s, int Rd,
-                int Rn, uint32_t Op2);
-    virtual void ADDR_SUB(int cc, int s, int Rd,
-                int Rn, uint32_t Op2);
-};
-
-}; // namespace android
-
-#endif //ANDROID_ARMASSEMBLER_INTERFACE_H
diff --git a/libpixelflinger/codeflinger/ARMAssemblerProxy.cpp b/libpixelflinger/codeflinger/ARMAssemblerProxy.cpp
deleted file mode 100644
index 816de48..0000000
--- a/libpixelflinger/codeflinger/ARMAssemblerProxy.cpp
+++ /dev/null
@@ -1,311 +0,0 @@
-/* libs/pixelflinger/codeflinger/ARMAssemblerProxy.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "ARMAssemblerProxy.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-ARMAssemblerProxy::ARMAssemblerProxy()
-    : mTarget(0)
-{
-}
-
-ARMAssemblerProxy::ARMAssemblerProxy(ARMAssemblerInterface* target)
-    : mTarget(target)
-{
-}
-
-ARMAssemblerProxy::~ARMAssemblerProxy()
-{
-    delete mTarget;
-}
-
-void ARMAssemblerProxy::setTarget(ARMAssemblerInterface* target)
-{
-    delete mTarget;
-    mTarget = target;
-}
-
-void ARMAssemblerProxy::reset() {
-    mTarget->reset();
-}
-int ARMAssemblerProxy::generate(const char* name) {
-    return mTarget->generate(name);
-}
-void ARMAssemblerProxy::disassemble(const char* name) {
-    return mTarget->disassemble(name);
-}
-int ARMAssemblerProxy::getCodegenArch()
-{
-    return mTarget->getCodegenArch();
-}
-void ARMAssemblerProxy::prolog() {
-    mTarget->prolog();
-}
-void ARMAssemblerProxy::epilog(uint32_t touched) {
-    mTarget->epilog(touched);
-}
-void ARMAssemblerProxy::comment(const char* string) {
-    mTarget->comment(string);
-}
-
-
-
-// addressing modes
-
-bool ARMAssemblerProxy::isValidImmediate(uint32_t immed)
-{
-    return mTarget->isValidImmediate(immed);
-}
-
-int ARMAssemblerProxy::buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm)
-{
-    return mTarget->buildImmediate(i, rot, imm);
-}
-
-
-
-uint32_t ARMAssemblerProxy::imm(uint32_t immediate)
-{
-    return mTarget->imm(immediate);
-}
-
-uint32_t ARMAssemblerProxy::reg_imm(int Rm, int type, uint32_t shift)
-{
-    return mTarget->reg_imm(Rm, type, shift);
-}
-
-uint32_t ARMAssemblerProxy::reg_rrx(int Rm)
-{
-    return mTarget->reg_rrx(Rm);
-}
-
-uint32_t ARMAssemblerProxy::reg_reg(int Rm, int type, int Rs)
-{
-    return mTarget->reg_reg(Rm, type, Rs);
-}
-
-
-// addressing modes...
-// LDR(B)/STR(B)/PLD
-// (immediate and Rm can be negative, which indicates U=0)
-uint32_t ARMAssemblerProxy::immed12_pre(int32_t immed12, int W)
-{
-    return mTarget->immed12_pre(immed12, W);
-}
-
-uint32_t ARMAssemblerProxy::immed12_post(int32_t immed12)
-{
-    return mTarget->immed12_post(immed12);
-}
-
-uint32_t ARMAssemblerProxy::reg_scale_pre(int Rm, int type, uint32_t shift, int W)
-{
-    return mTarget->reg_scale_pre(Rm, type, shift, W);
-}
-
-uint32_t ARMAssemblerProxy::reg_scale_post(int Rm, int type, uint32_t shift)
-{
-    return mTarget->reg_scale_post(Rm, type, shift);
-}
-
-
-// LDRH/LDRSB/LDRSH/STRH
-// (immediate and Rm can be negative, which indicates U=0)
-uint32_t ARMAssemblerProxy::immed8_pre(int32_t immed8, int W)
-{
-    return mTarget->immed8_pre(immed8, W);
-}
-
-uint32_t ARMAssemblerProxy::immed8_post(int32_t immed8)
-{
-    return mTarget->immed8_post(immed8);
-}
-
-uint32_t ARMAssemblerProxy::reg_pre(int Rm, int W)
-{
-    return mTarget->reg_pre(Rm, W);
-}
-
-uint32_t ARMAssemblerProxy::reg_post(int Rm)
-{
-    return mTarget->reg_post(Rm);
-}
-
-
-//------------------------------------------------------------------------
-
-
-
-void ARMAssemblerProxy::dataProcessing( int opcode, int cc, int s,
-                                        int Rd, int Rn, uint32_t Op2)
-{
-    mTarget->dataProcessing(opcode, cc, s, Rd, Rn, Op2);
-}
-
-void ARMAssemblerProxy::MLA(int cc, int s, int Rd, int Rm, int Rs, int Rn) {
-    mTarget->MLA(cc, s, Rd, Rm, Rs, Rn);
-}
-void ARMAssemblerProxy::MUL(int cc, int s, int Rd, int Rm, int Rs) {
-    mTarget->MUL(cc, s, Rd, Rm, Rs);
-}
-void ARMAssemblerProxy::UMULL(int cc, int s,
-            int RdLo, int RdHi, int Rm, int Rs) {
-    mTarget->UMULL(cc, s, RdLo, RdHi, Rm, Rs); 
-}
-void ARMAssemblerProxy::UMUAL(int cc, int s,
-            int RdLo, int RdHi, int Rm, int Rs) {
-    mTarget->UMUAL(cc, s, RdLo, RdHi, Rm, Rs); 
-}
-void ARMAssemblerProxy::SMULL(int cc, int s,
-            int RdLo, int RdHi, int Rm, int Rs) {
-    mTarget->SMULL(cc, s, RdLo, RdHi, Rm, Rs); 
-}
-void ARMAssemblerProxy::SMUAL(int cc, int s,
-            int RdLo, int RdHi, int Rm, int Rs) {
-    mTarget->SMUAL(cc, s, RdLo, RdHi, Rm, Rs); 
-}
-
-void ARMAssemblerProxy::B(int cc, uint32_t* pc) {
-    mTarget->B(cc, pc); 
-}
-void ARMAssemblerProxy::BL(int cc, uint32_t* pc) {
-    mTarget->BL(cc, pc); 
-}
-void ARMAssemblerProxy::BX(int cc, int Rn) {
-    mTarget->BX(cc, Rn); 
-}
-void ARMAssemblerProxy::label(const char* theLabel) {
-    mTarget->label(theLabel);
-}
-void ARMAssemblerProxy::B(int cc, const char* label) {
-    mTarget->B(cc, label);
-}
-void ARMAssemblerProxy::BL(int cc, const char* label) {
-    mTarget->BL(cc, label);
-}
-
-uint32_t* ARMAssemblerProxy::pcForLabel(const char* label) {
-    return mTarget->pcForLabel(label);
-}
-
-void ARMAssemblerProxy::LDR(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->LDR(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::LDRB(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->LDRB(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::STR(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->STR(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::STRB(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->STRB(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::LDRH(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->LDRH(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::LDRSB(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->LDRSB(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::LDRSH(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->LDRSH(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::STRH(int cc, int Rd, int Rn, uint32_t offset) {
-    mTarget->STRH(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::LDM(int cc, int dir, int Rn, int W, uint32_t reg_list) {
-    mTarget->LDM(cc, dir, Rn, W, reg_list);
-}
-void ARMAssemblerProxy::STM(int cc, int dir, int Rn, int W, uint32_t reg_list) {
-    mTarget->STM(cc, dir, Rn, W, reg_list);
-}
-
-void ARMAssemblerProxy::SWP(int cc, int Rn, int Rd, int Rm) {
-    mTarget->SWP(cc, Rn, Rd, Rm);
-}
-void ARMAssemblerProxy::SWPB(int cc, int Rn, int Rd, int Rm) {
-    mTarget->SWPB(cc, Rn, Rd, Rm);
-}
-void ARMAssemblerProxy::SWI(int cc, uint32_t comment) {
-    mTarget->SWI(cc, comment);
-}
-
-
-void ARMAssemblerProxy::PLD(int Rn, uint32_t offset) {
-    mTarget->PLD(Rn, offset);
-}
-void ARMAssemblerProxy::CLZ(int cc, int Rd, int Rm) {
-    mTarget->CLZ(cc, Rd, Rm);
-}
-void ARMAssemblerProxy::QADD(int cc, int Rd, int Rm, int Rn) {
-    mTarget->QADD(cc, Rd, Rm, Rn);
-}
-void ARMAssemblerProxy::QDADD(int cc, int Rd, int Rm, int Rn) {
-    mTarget->QDADD(cc, Rd, Rm, Rn);
-}
-void ARMAssemblerProxy::QSUB(int cc, int Rd, int Rm, int Rn) {
-    mTarget->QSUB(cc, Rd, Rm, Rn);
-}
-void ARMAssemblerProxy::QDSUB(int cc, int Rd, int Rm, int Rn) {
-    mTarget->QDSUB(cc, Rd, Rm, Rn);
-}
-void ARMAssemblerProxy::SMUL(int cc, int xy, int Rd, int Rm, int Rs) {
-    mTarget->SMUL(cc, xy, Rd, Rm, Rs);
-}
-void ARMAssemblerProxy::SMULW(int cc, int y, int Rd, int Rm, int Rs) {
-    mTarget->SMULW(cc, y, Rd, Rm, Rs);
-}
-void ARMAssemblerProxy::SMLA(int cc, int xy, int Rd, int Rm, int Rs, int Rn) {
-    mTarget->SMLA(cc, xy, Rd, Rm, Rs, Rn);
-}
-void ARMAssemblerProxy::SMLAL(  int cc, int xy,
-                                int RdHi, int RdLo, int Rs, int Rm) {
-    mTarget->SMLAL(cc, xy, RdHi, RdLo, Rs, Rm);
-}
-void ARMAssemblerProxy::SMLAW(int cc, int y, int Rd, int Rm, int Rs, int Rn) {
-    mTarget->SMLAW(cc, y, Rd, Rm, Rs, Rn);
-}
-
-void ARMAssemblerProxy::UXTB16(int cc, int Rd, int Rm, int rotate) {
-    mTarget->UXTB16(cc, Rd, Rm, rotate);
-}
-
-void ARMAssemblerProxy::UBFX(int cc, int Rd, int Rn, int lsb, int width) {
-    mTarget->UBFX(cc, Rd, Rn, lsb, width);
-}
-
-void ARMAssemblerProxy::ADDR_LDR(int cc, int Rd, int Rn, uint32_t offset) {
-     mTarget->ADDR_LDR(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::ADDR_STR(int cc, int Rd, int Rn, uint32_t offset) {
-     mTarget->ADDR_STR(cc, Rd, Rn, offset);
-}
-void ARMAssemblerProxy::ADDR_ADD(int cc, int s, int Rd, int Rn, uint32_t Op2){
-     mTarget->ADDR_ADD(cc, s, Rd, Rn, Op2);
-}
-void ARMAssemblerProxy::ADDR_SUB(int cc, int s, int Rd, int Rn, uint32_t Op2){
-     mTarget->ADDR_SUB(cc, s, Rd, Rn, Op2);
-}
-
-}; // namespace android
-
diff --git a/libpixelflinger/codeflinger/ARMAssemblerProxy.h b/libpixelflinger/codeflinger/ARMAssemblerProxy.h
deleted file mode 100644
index 10d0390..0000000
--- a/libpixelflinger/codeflinger/ARMAssemblerProxy.h
+++ /dev/null
@@ -1,164 +0,0 @@
-/* libs/pixelflinger/codeflinger/ARMAssemblerProxy.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_ARMASSEMBLER_PROXY_H
-#define ANDROID_ARMASSEMBLER_PROXY_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "ARMAssemblerInterface.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-class ARMAssemblerProxy : public ARMAssemblerInterface
-{
-public:
-    // ARMAssemblerProxy take ownership of the target
-
-                ARMAssemblerProxy();
-    explicit    ARMAssemblerProxy(ARMAssemblerInterface* target);
-    virtual     ~ARMAssemblerProxy();
-
-    void setTarget(ARMAssemblerInterface* target);
-
-    virtual void    reset();
-    virtual int     generate(const char* name);
-    virtual void    disassemble(const char* name);
-    virtual int     getCodegenArch();
-
-    virtual void    prolog();
-    virtual void    epilog(uint32_t touched);
-    virtual void    comment(const char* string);
-
-    // -----------------------------------------------------------------------
-    // shifters and addressing modes
-    // -----------------------------------------------------------------------
-
-    virtual bool        isValidImmediate(uint32_t immed);
-    virtual int         buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm);
-
-    virtual uint32_t    imm(uint32_t immediate);
-    virtual uint32_t    reg_imm(int Rm, int type, uint32_t shift);
-    virtual uint32_t    reg_rrx(int Rm);
-    virtual uint32_t    reg_reg(int Rm, int type, int Rs);
-
-    // addressing modes...
-    // LDR(B)/STR(B)/PLD
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed12_pre(int32_t immed12, int W=0);
-    virtual uint32_t    immed12_post(int32_t immed12);
-    virtual uint32_t    reg_scale_pre(int Rm, int type=0, uint32_t shift=0, int W=0);
-    virtual uint32_t    reg_scale_post(int Rm, int type=0, uint32_t shift=0);
-
-    // LDRH/LDRSB/LDRSH/STRH
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed8_pre(int32_t immed8, int W=0);
-    virtual uint32_t    immed8_post(int32_t immed8);
-    virtual uint32_t    reg_pre(int Rm, int W=0);
-    virtual uint32_t    reg_post(int Rm);
-
-
-    virtual void    dataProcessing(int opcode, int cc, int s,
-                                int Rd, int Rn,
-                                uint32_t Op2);
-    virtual void MLA(int cc, int s,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void MUL(int cc, int s,
-                int Rd, int Rm, int Rs);
-    virtual void UMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void UMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-
-    virtual void B(int cc, uint32_t* pc);
-    virtual void BL(int cc, uint32_t* pc);
-    virtual void BX(int cc, int Rn);
-    virtual void label(const char* theLabel);
-    virtual void B(int cc, const char* label);
-    virtual void BL(int cc, const char* label);
-
-    uint32_t* pcForLabel(const char* label);
-
-    virtual void LDR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void LDRB(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void STR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void STRB(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void LDRH (int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void LDRSB(int cc, int Rd, 
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void LDRSH(int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void STRH (int cc, int Rd,
-                int Rn, uint32_t offset = __immed8_pre(0));
-    virtual void LDM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-    virtual void STM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-
-    virtual void SWP(int cc, int Rn, int Rd, int Rm);
-    virtual void SWPB(int cc, int Rn, int Rd, int Rm);
-    virtual void SWI(int cc, uint32_t comment);
-
-    virtual void PLD(int Rn, uint32_t offset);
-    virtual void CLZ(int cc, int Rd, int Rm);
-    virtual void QADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QDADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void QDSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs);
-    virtual void SMULW(int cc, int y,
-                int Rd, int Rm, int Rs);
-    virtual void SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm);
-    virtual void SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn);
-
-    virtual void UXTB16(int cc, int Rd, int Rm, int rotate);
-    virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width);
-
-    virtual void ADDR_LDR(int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void ADDR_STR (int cc, int Rd,
-                int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void ADDR_ADD(int cc, int s, int Rd,
-                int Rn, uint32_t Op2);
-    virtual void ADDR_SUB(int cc, int s, int Rd,
-                int Rn, uint32_t Op2);
-
-private:
-    ARMAssemblerInterface*  mTarget;
-};
-
-}; // namespace android
-
-#endif //ANDROID_ARMASSEMBLER_PROXY_H
diff --git a/libpixelflinger/codeflinger/Arm64Assembler.cpp b/libpixelflinger/codeflinger/Arm64Assembler.cpp
deleted file mode 100644
index 8926776..0000000
--- a/libpixelflinger/codeflinger/Arm64Assembler.cpp
+++ /dev/null
@@ -1,1240 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#define LOG_TAG "ArmToArm64Assembler"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <cutils/properties.h>
-#include <log/log.h>
-#include <private/pixelflinger/ggl_context.h>
-
-#include "codeflinger/Arm64Assembler.h"
-#include "codeflinger/Arm64Disassembler.h"
-#include "codeflinger/CodeCache.h"
-
-/*
-** --------------------------------------------
-** Support for Arm64 in GGLAssembler JIT
-** --------------------------------------------
-**
-** Approach
-** - GGLAssembler and associated files are largely un-changed.
-** - A translator class maps ArmAssemblerInterface calls to
-**   generate Arm64 instructions.
-**
-** ----------------------
-** ArmToArm64Assembler
-** ----------------------
-**
-** - Subclassed from ArmAssemblerInterface
-**
-** - Translates each ArmAssemblerInterface call to generate
-**   one or more Arm64 instructions  as necessary.
-**
-** - Does not implement ArmAssemblerInterface portions unused by GGLAssembler
-**   It calls NOT_IMPLEMENTED() for such cases, which in turn logs
-**    a fatal message.
-**
-** - Uses A64_.. series of functions to generate instruction machine code
-**   for Arm64 instructions. These functions also log the instruction
-**   to LOG, if ARM64_ASM_DEBUG define is set to 1
-**
-** - Dumps machine code and eqvt assembly if "debug.pf.disasm" option is set
-**   It uses arm64_disassemble to perform disassembly
-**
-** - Uses register 13 (SP in ARM), 15 (PC in ARM), 16, 17 for storing
-**   intermediate results. GGLAssembler does not use SP and PC as these
-**   registers are marked as reserved. The temporary registers are not
-**   saved/restored on stack as these are caller-saved registers in Arm64
-**
-** - Uses CSEL instruction to support conditional execution. The result is
-**   stored in a temporary register and then copied to the target register
-**   if the condition is true.
-**
-** - In the case of conditional data transfer instructions, conditional
-**   branch is used to skip over instruction, if the condition is false
-**
-** - Wherever possible, immediate values are transferred to temporary
-**   register prior to processing. This simplifies overall implementation
-**   as instructions requiring immediate values are converted to
-**   move immediate instructions followed by register-register instruction.
-**
-** --------------------------------------------
-** ArmToArm64Assembler unit test bench
-** --------------------------------------------
-**
-** - Tests ArmToArm64Assembler interface for all the possible
-**   ways in which GGLAssembler uses ArmAssemblerInterface interface.
-**
-** - Uses test jacket (written in assembly) to set the registers,
-**   condition flags prior to calling generated instruction. It also
-**   copies registers and flags at the end of execution. Caller then
-**   checks if generated code performed correct operation based on
-**   output registers and flags.
-**
-** - Broadly contains three type of tests, (i) data operation tests
-**   (ii) data transfer tests and (iii) LDM/STM tests.
-**
-** ----------------------
-** Arm64 disassembler
-** ----------------------
-** - This disassembler disassembles only those machine codes which can be
-**   generated by ArmToArm64Assembler. It has a unit testbench which
-**   tests all the instructions supported by the disassembler.
-**
-** ------------------------------------------------------------------
-** ARMAssembler/ARMAssemblerInterface/ARMAssemblerProxy changes
-** ------------------------------------------------------------------
-**
-** - In existing code, addresses were being handled as 32 bit values at
-**   certain places.
-**
-** - Added a new set of functions for address load/store/manipulation.
-**   These are ADDR_LDR, ADDR_STR, ADDR_ADD, ADDR_SUB and they map to
-**   default 32 bit implementations in ARMAssemblerInterface.
-**
-** - ArmToArm64Assembler maps these functions to appropriate 64 bit
-**   functions.
-**
-** ----------------------
-** GGLAssembler changes
-** ----------------------
-** - Since ArmToArm64Assembler can generate 4 Arm64 instructions for
-**   each call in worst case, the memory required is set to 4 times
-**   ARM memory
-**
-** - Address load/store/manipulation were changed to use new functions
-**   added in the ARMAssemblerInterface.
-**
-*/
-
-
-#define NOT_IMPLEMENTED()  LOG_FATAL("Arm instruction %s not yet implemented\n", __func__)
-
-#define ARM64_ASM_DEBUG 0
-
-#if ARM64_ASM_DEBUG
-    #define LOG_INSTR(...) ALOGD("\t" __VA_ARGS__)
-    #define LOG_LABEL(...) ALOGD(__VA_ARGS__)
-#else
-    #define LOG_INSTR(...) ((void)0)
-    #define LOG_LABEL(...) ((void)0)
-#endif
-
-namespace android {
-
-static __unused const char* shift_codes[] =
-{
-    "LSL", "LSR", "ASR", "ROR"
-};
-static __unused const char *cc_codes[] =
-{
-    "EQ", "NE", "CS", "CC", "MI",
-    "PL", "VS", "VC", "HI", "LS",
-    "GE", "LT", "GT", "LE", "AL", "NV"
-};
-
-ArmToArm64Assembler::ArmToArm64Assembler(const sp<Assembly>& assembly)
-    :   ARMAssemblerInterface(),
-        mAssembly(assembly)
-{
-    mBase = mPC = (uint32_t *)assembly->base();
-    mDuration = ggl_system_time();
-    mZeroReg = 13;
-    mTmpReg1 = 15;
-    mTmpReg2 = 16;
-    mTmpReg3 = 17;
-}
-
-ArmToArm64Assembler::ArmToArm64Assembler(void *base)
-    :   ARMAssemblerInterface(), mAssembly(NULL)
-{
-    mBase = mPC = (uint32_t *)base;
-    mDuration = ggl_system_time();
-    // Regs 13, 15, 16, 17 are used as temporary registers
-    mZeroReg = 13;
-    mTmpReg1 = 15;
-    mTmpReg2 = 16;
-    mTmpReg3 = 17;
-}
-
-ArmToArm64Assembler::~ArmToArm64Assembler()
-{
-}
-
-uint32_t* ArmToArm64Assembler::pc() const
-{
-    return mPC;
-}
-
-uint32_t* ArmToArm64Assembler::base() const
-{
-    return mBase;
-}
-
-void ArmToArm64Assembler::reset()
-{
-    if(mAssembly == NULL)
-        mPC = mBase;
-    else
-        mBase = mPC = (uint32_t *)mAssembly->base();
-    mBranchTargets.clear();
-    mLabels.clear();
-    mLabelsInverseMapping.clear();
-    mComments.clear();
-#if ARM64_ASM_DEBUG
-    ALOGI("RESET\n");
-#endif
-}
-
-int ArmToArm64Assembler::getCodegenArch()
-{
-    return CODEGEN_ARCH_ARM64;
-}
-
-// ----------------------------------------------------------------------------
-
-void ArmToArm64Assembler::disassemble(const char* name)
-{
-    if(name)
-    {
-        printf("%s:\n", name);
-    }
-    size_t count = pc()-base();
-    uint32_t* i = base();
-    while (count--)
-    {
-        ssize_t label = mLabelsInverseMapping.indexOfKey(i);
-        if (label >= 0)
-        {
-            printf("%s:\n", mLabelsInverseMapping.valueAt(label));
-        }
-        ssize_t comment = mComments.indexOfKey(i);
-        if (comment >= 0)
-        {
-            printf("; %s\n", mComments.valueAt(comment));
-        }
-        printf("%p:    %08x    ", i, uint32_t(i[0]));
-        {
-            char instr[256];
-            ::arm64_disassemble(*i, instr);
-            printf("%s\n", instr);
-        }
-        i++;
-    }
-}
-
-void ArmToArm64Assembler::comment(const char* string)
-{
-    mComments.add(mPC, string);
-    LOG_INSTR("//%s\n", string);
-}
-
-void ArmToArm64Assembler::label(const char* theLabel)
-{
-    mLabels.add(theLabel, mPC);
-    mLabelsInverseMapping.add(mPC, theLabel);
-    LOG_LABEL("%s:\n", theLabel);
-}
-
-void ArmToArm64Assembler::B(int cc, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    LOG_INSTR("B%s %s\n", cc_codes[cc], label );
-    *mPC++ = (0x54 << 24) | cc;
-}
-
-void ArmToArm64Assembler::BL(int /*cc*/, const char* /*label*/)
-{
-    NOT_IMPLEMENTED(); //Not Required
-}
-
-// ----------------------------------------------------------------------------
-//Prolog/Epilog & Generate...
-// ----------------------------------------------------------------------------
-
-void ArmToArm64Assembler::prolog()
-{
-    // write prolog code
-    mPrologPC = mPC;
-    *mPC++ = A64_MOVZ_X(mZeroReg,0,0);
-}
-
-void ArmToArm64Assembler::epilog(uint32_t /*touched*/)
-{
-    // write epilog code
-    static const int XLR = 30;
-    *mPC++ = A64_RET(XLR);
-}
-
-int ArmToArm64Assembler::generate(const char* name)
-{
-    // fixup all the branches
-    size_t count = mBranchTargets.size();
-    while (count--)
-    {
-        const branch_target_t& bt = mBranchTargets[count];
-        uint32_t* target_pc = mLabels.valueFor(bt.label);
-        LOG_ALWAYS_FATAL_IF(!target_pc,
-                "error resolving branch targets, target_pc is null");
-        int32_t offset = int32_t(target_pc - bt.pc);
-        *bt.pc |= (offset & 0x7FFFF) << 5;
-    }
-
-    if(mAssembly != NULL)
-        mAssembly->resize( int(pc()-base())*4 );
-
-    // the instruction cache is flushed by CodeCache
-    const int64_t duration = ggl_system_time() - mDuration;
-    const char * const format = "generated %s (%d ins) at [%p:%p] in %ld ns\n";
-    ALOGI(format, name, int(pc()-base()), base(), pc(), duration);
-
-
-    char value[PROPERTY_VALUE_MAX];
-    property_get("debug.pf.disasm", value, "0");
-    if (atoi(value) != 0)
-    {
-        printf(format, name, int(pc()-base()), base(), pc(), duration);
-        disassemble(name);
-    }
-    return OK;
-}
-
-uint32_t* ArmToArm64Assembler::pcForLabel(const char* label)
-{
-    return mLabels.valueFor(label);
-}
-
-// ----------------------------------------------------------------------------
-// Data Processing...
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::dataProcessingCommon(int opcode,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    if(opcode != opSUB && s == 1)
-    {
-        NOT_IMPLEMENTED(); //Not required
-        return;
-    }
-
-    if(opcode != opSUB && opcode != opADD && opcode != opAND &&
-       opcode != opORR && opcode != opMVN)
-    {
-        NOT_IMPLEMENTED(); //Not required
-        return;
-    }
-
-    if(Op2 == OPERAND_REG_IMM && mAddrMode.reg_imm_shift > 31)
-        {
-        NOT_IMPLEMENTED();
-        return;
-    }
-
-    //Store immediate in temporary register and convert
-    //immediate operation into register operation
-    if(Op2 == OPERAND_IMM)
-    {
-        int imm = mAddrMode.immediate;
-        *mPC++ = A64_MOVZ_W(mTmpReg2, imm & 0x0000FFFF, 0);
-        *mPC++ = A64_MOVK_W(mTmpReg2, (imm >> 16) & 0x0000FFFF, 16);
-        Op2 = mTmpReg2;
-    }
-
-
-    {
-        uint32_t shift;
-        uint32_t amount;
-        uint32_t Rm;
-
-        if(Op2 == OPERAND_REG_IMM)
-        {
-            shift   = mAddrMode.reg_imm_type;
-            amount  = mAddrMode.reg_imm_shift;
-            Rm      = mAddrMode.reg_imm_Rm;
-        }
-        else if(Op2 < OPERAND_REG)
-        {
-            shift   = 0;
-            amount  = 0;
-            Rm      = Op2;
-        }
-        else
-        {
-            NOT_IMPLEMENTED(); //Not required
-            return;
-        }
-
-        switch(opcode)
-        {
-            case opADD: *mPC++ = A64_ADD_W(Rd, Rn, Rm, shift, amount); break;
-            case opAND: *mPC++ = A64_AND_W(Rd, Rn, Rm, shift, amount); break;
-            case opORR: *mPC++ = A64_ORR_W(Rd, Rn, Rm, shift, amount); break;
-            case opMVN: *mPC++ = A64_ORN_W(Rd, Rn, Rm, shift, amount); break;
-            case opSUB: *mPC++ = A64_SUB_W(Rd, Rn, Rm, shift, amount, s);break;
-        };
-
-    }
-}
-
-void ArmToArm64Assembler::dataProcessing(int opcode, int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    uint32_t Wd;
-
-    if(cc != AL)
-        Wd = mTmpReg1;
-    else
-        Wd = Rd;
-
-    if(opcode == opADD || opcode == opAND || opcode == opORR ||opcode == opSUB)
-    {
-        dataProcessingCommon(opcode, s, Wd, Rn, Op2);
-    }
-    else if(opcode == opCMP)
-    {
-        dataProcessingCommon(opSUB, 1, mTmpReg3, Rn, Op2);
-    }
-    else if(opcode == opRSB)
-    {
-        dataProcessingCommon(opSUB, s, Wd, Rn, Op2);
-        dataProcessingCommon(opSUB, s, Wd, mZeroReg, Wd);
-    }
-    else if(opcode == opMOV)
-    {
-        dataProcessingCommon(opORR, 0, Wd, mZeroReg, Op2);
-        if(s == 1)
-        {
-            dataProcessingCommon(opSUB, 1, mTmpReg3, Wd, mZeroReg);
-        }
-    }
-    else if(opcode == opMVN)
-    {
-        dataProcessingCommon(opMVN, s, Wd, mZeroReg, Op2);
-    }
-    else if(opcode == opBIC)
-    {
-        dataProcessingCommon(opMVN, s, mTmpReg3, mZeroReg, Op2);
-        dataProcessingCommon(opAND, s, Wd, Rn, mTmpReg3);
-    }
-    else
-    {
-        NOT_IMPLEMENTED();
-        return;
-    }
-
-    if(cc != AL)
-    {
-        *mPC++ = A64_CSEL_W(Rd, mTmpReg1, Rd, cc);
-    }
-}
-// ----------------------------------------------------------------------------
-// Address Processing...
-// ----------------------------------------------------------------------------
-
-void ArmToArm64Assembler::ADDR_ADD(int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-    if(s  != 0) { NOT_IMPLEMENTED(); return;} //Not required
-
-
-    if(Op2 == OPERAND_REG_IMM && mAddrMode.reg_imm_type == LSL)
-    {
-        int Rm = mAddrMode.reg_imm_Rm;
-        int amount = mAddrMode.reg_imm_shift;
-        *mPC++ = A64_ADD_X_Wm_SXTW(Rd, Rn, Rm, amount);
-    }
-    else if(Op2 < OPERAND_REG)
-    {
-        int Rm = Op2;
-        int amount = 0;
-        *mPC++ = A64_ADD_X_Wm_SXTW(Rd, Rn, Rm, amount);
-    }
-    else if(Op2 == OPERAND_IMM)
-    {
-        int imm = mAddrMode.immediate;
-        *mPC++ = A64_MOVZ_W(mTmpReg1, imm & 0x0000FFFF, 0);
-        *mPC++ = A64_MOVK_W(mTmpReg1, (imm >> 16) & 0x0000FFFF, 16);
-
-        int Rm = mTmpReg1;
-        int amount = 0;
-        *mPC++ = A64_ADD_X_Wm_SXTW(Rd, Rn, Rm, amount);
-    }
-    else
-    {
-        NOT_IMPLEMENTED(); //Not required
-    }
-}
-
-void ArmToArm64Assembler::ADDR_SUB(int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-    if(s  != 0) { NOT_IMPLEMENTED(); return;} //Not required
-
-    if(Op2 == OPERAND_REG_IMM && mAddrMode.reg_imm_type == LSR)
-    {
-        *mPC++ = A64_ADD_W(mTmpReg1, mZeroReg, mAddrMode.reg_imm_Rm,
-                           LSR, mAddrMode.reg_imm_shift);
-        *mPC++ = A64_SUB_X_Wm_SXTW(Rd, Rn, mTmpReg1, 0);
-    }
-    else
-    {
-        NOT_IMPLEMENTED(); //Not required
-    }
-}
-
-// ----------------------------------------------------------------------------
-// multiply...
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::MLA(int cc, int s,int Rd, int Rm, int Rs, int Rn)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-
-    *mPC++ = A64_MADD_W(Rd, Rm, Rs, Rn);
-    if(s == 1)
-        dataProcessingCommon(opSUB, 1, mTmpReg1, Rd, mZeroReg);
-}
-void ArmToArm64Assembler::MUL(int cc, int s, int Rd, int Rm, int Rs)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-    if(s  != 0) { NOT_IMPLEMENTED(); return;} //Not required
-    *mPC++ = A64_MADD_W(Rd, Rm, Rs, mZeroReg);
-}
-void ArmToArm64Assembler::UMULL(int /*cc*/, int /*s*/,
-        int /*RdLo*/, int /*RdHi*/, int /*Rm*/, int /*Rs*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-void ArmToArm64Assembler::UMUAL(int /*cc*/, int /*s*/,
-        int /*RdLo*/, int /*RdHi*/, int /*Rm*/, int /*Rs*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-void ArmToArm64Assembler::SMULL(int /*cc*/, int /*s*/,
-        int /*RdLo*/, int /*RdHi*/, int /*Rm*/, int /*Rs*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-void ArmToArm64Assembler::SMUAL(int /*cc*/, int /*s*/,
-        int /*RdLo*/, int /*RdHi*/, int /*Rm*/, int /*Rs*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-// ----------------------------------------------------------------------------
-// branches relative to PC...
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::B(int /*cc*/, uint32_t* /*pc*/){
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::BL(int /*cc*/, uint32_t* /*pc*/){
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::BX(int /*cc*/, int /*Rn*/){
-    NOT_IMPLEMENTED(); //Not required
-}
-
-// ----------------------------------------------------------------------------
-// data transfer...
-// ----------------------------------------------------------------------------
-enum dataTransferOp
-{
-    opLDR,opLDRB,opLDRH,opSTR,opSTRB,opSTRH
-};
-
-void ArmToArm64Assembler::dataTransfer(int op, int cc,
-                            int Rd, int Rn, uint32_t op_type, uint32_t size)
-{
-    const int XSP = 31;
-    if(Rn == SP)
-        Rn = XSP;
-
-    if(op_type == OPERAND_IMM)
-    {
-        int addrReg;
-        int imm = mAddrMode.immediate;
-        if(imm >= 0 && imm < (1<<12))
-            *mPC++ = A64_ADD_IMM_X(mTmpReg1, mZeroReg, imm, 0);
-        else if(imm < 0 && -imm < (1<<12))
-            *mPC++ = A64_SUB_IMM_X(mTmpReg1, mZeroReg, -imm, 0);
-        else
-        {
-            NOT_IMPLEMENTED();
-            return;
-        }
-
-        addrReg = Rn;
-        if(mAddrMode.preindex == true || mAddrMode.postindex == true)
-        {
-            *mPC++ = A64_ADD_X(mTmpReg2, addrReg, mTmpReg1);
-            if(mAddrMode.preindex == true)
-                addrReg = mTmpReg2;
-        }
-
-        if(cc != AL)
-            *mPC++ = A64_B_COND(cc^1, 8);
-
-        *mPC++ = A64_LDRSTR_Wm_SXTW_0(op, size, Rd, addrReg, mZeroReg);
-
-        if(mAddrMode.writeback == true)
-            *mPC++ = A64_CSEL_X(Rn, mTmpReg2, Rn, cc);
-    }
-    else if(op_type == OPERAND_REG_OFFSET)
-    {
-        if(cc != AL)
-            *mPC++ = A64_B_COND(cc^1, 8);
-        *mPC++ = A64_LDRSTR_Wm_SXTW_0(op, size, Rd, Rn, mAddrMode.reg_offset);
-
-    }
-    else if(op_type > OPERAND_UNSUPPORTED)
-    {
-        if(cc != AL)
-            *mPC++ = A64_B_COND(cc^1, 8);
-        *mPC++ = A64_LDRSTR_Wm_SXTW_0(op, size, Rd, Rn, mZeroReg);
-    }
-    else
-    {
-        NOT_IMPLEMENTED(); // Not required
-    }
-    return;
-
-}
-void ArmToArm64Assembler::ADDR_LDR(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opLDR, cc, Rd, Rn, op_type, 64);
-}
-void ArmToArm64Assembler::ADDR_STR(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opSTR, cc, Rd, Rn, op_type, 64);
-}
-void ArmToArm64Assembler::LDR(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opLDR, cc, Rd, Rn, op_type);
-}
-void ArmToArm64Assembler::LDRB(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opLDRB, cc, Rd, Rn, op_type);
-}
-void ArmToArm64Assembler::STR(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opSTR, cc, Rd, Rn, op_type);
-}
-
-void ArmToArm64Assembler::STRB(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opSTRB, cc, Rd, Rn, op_type);
-}
-
-void ArmToArm64Assembler::LDRH(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opLDRH, cc, Rd, Rn, op_type);
-}
-void ArmToArm64Assembler::LDRSB(int /*cc*/, int /*Rd*/, int /*Rn*/, uint32_t /*offset*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-void ArmToArm64Assembler::LDRSH(int /*cc*/, int /*Rd*/, int /*Rn*/, uint32_t /*offset*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::STRH(int cc, int Rd, int Rn, uint32_t op_type)
-{
-    return dataTransfer(opSTRH, cc, Rd, Rn, op_type);
-}
-
-// ----------------------------------------------------------------------------
-// block data transfer...
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::LDM(int cc, int dir,
-        int Rn, int W, uint32_t reg_list)
-{
-    const int XSP = 31;
-    if(cc != AL || dir != IA || W == 0 || Rn != SP)
-    {
-        NOT_IMPLEMENTED();
-        return;
-    }
-
-    for(int i = 0; i < 32; ++i)
-    {
-        if((reg_list & (1 << i)))
-        {
-            int reg = i;
-            int size = 16;
-            *mPC++ = A64_LDR_IMM_PostIndex(reg, XSP, size);
-        }
-    }
-}
-
-void ArmToArm64Assembler::STM(int cc, int dir,
-        int Rn, int W, uint32_t reg_list)
-{
-    const int XSP = 31;
-    if(cc != AL || dir != DB || W == 0 || Rn != SP)
-    {
-        NOT_IMPLEMENTED();
-        return;
-    }
-
-    for(int i = 31; i >= 0; --i)
-    {
-        if((reg_list & (1 << i)))
-        {
-            int size = -16;
-            int reg  = i;
-            *mPC++ = A64_STR_IMM_PreIndex(reg, XSP, size);
-        }
-    }
-}
-
-// ----------------------------------------------------------------------------
-// special...
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::SWP(int /*cc*/, int /*Rn*/, int /*Rd*/, int /*Rm*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-void ArmToArm64Assembler::SWPB(int /*cc*/, int /*Rn*/, int /*Rd*/, int /*Rm*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-void ArmToArm64Assembler::SWI(int /*cc*/, uint32_t /*comment*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-// ----------------------------------------------------------------------------
-// DSP instructions...
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::PLD(int /*Rn*/, uint32_t /*offset*/) {
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::CLZ(int /*cc*/, int /*Rd*/, int /*Rm*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::QADD(int /*cc*/, int /*Rd*/, int /*Rm*/, int /*Rn*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::QDADD(int /*cc*/, int /*Rd*/, int /*Rm*/, int /*Rn*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::QSUB(int /*cc*/, int /*Rd*/, int /*Rm*/, int /*Rn*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-void ArmToArm64Assembler::QDSUB(int /*cc*/, int /*Rd*/, int /*Rm*/, int /*Rn*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-}
-
-// ----------------------------------------------------------------------------
-// 16 x 16 multiplication
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-
-    if (xy & xyTB)
-        *mPC++ = A64_SBFM_W(mTmpReg1, Rm, 16, 31);
-    else
-        *mPC++ = A64_SBFM_W(mTmpReg1, Rm, 0, 15);
-
-    if (xy & xyBT)
-        *mPC++ = A64_SBFM_W(mTmpReg2, Rs, 16, 31);
-    else
-        *mPC++ = A64_SBFM_W(mTmpReg2, Rs, 0, 15);
-
-    *mPC++ = A64_MADD_W(Rd,mTmpReg1,mTmpReg2, mZeroReg);
-}
-// ----------------------------------------------------------------------------
-// 32 x 16 multiplication
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::SMULW(int cc, int y, int Rd, int Rm, int Rs)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-
-    if (y & yT)
-        *mPC++ = A64_SBFM_W(mTmpReg1, Rs, 16, 31);
-    else
-        *mPC++ = A64_SBFM_W(mTmpReg1, Rs, 0, 15);
-
-    *mPC++ = A64_SBFM_W(mTmpReg2, Rm, 0, 31);
-    *mPC++ = A64_SMADDL(mTmpReg3,mTmpReg1,mTmpReg2, mZeroReg);
-    *mPC++ = A64_UBFM_X(Rd,mTmpReg3, 16, 47);
-}
-// ----------------------------------------------------------------------------
-// 16 x 16 multiplication and accumulate
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::SMLA(int cc, int xy, int Rd, int Rm, int Rs, int Rn)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-    if(xy != xyBB) { NOT_IMPLEMENTED(); return;} //Not required
-
-    *mPC++ = A64_SBFM_W(mTmpReg1, Rm, 0, 15);
-    *mPC++ = A64_SBFM_W(mTmpReg2, Rs, 0, 15);
-    *mPC++ = A64_MADD_W(Rd, mTmpReg1, mTmpReg2, Rn);
-}
-
-void ArmToArm64Assembler::SMLAL(int /*cc*/, int /*xy*/,
-                int /*RdHi*/, int /*RdLo*/, int /*Rs*/, int /*Rm*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-    return;
-}
-
-void ArmToArm64Assembler::SMLAW(int /*cc*/, int /*y*/,
-                int /*Rd*/, int /*Rm*/, int /*Rs*/, int /*Rn*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-    return;
-}
-
-// ----------------------------------------------------------------------------
-// Byte/half word extract and extend
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::UXTB16(int cc, int Rd, int Rm, int rotate)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-
-    *mPC++ = A64_EXTR_W(mTmpReg1, Rm, Rm, rotate * 8);
-
-    uint32_t imm = 0x00FF00FF;
-    *mPC++ = A64_MOVZ_W(mTmpReg2, imm & 0xFFFF, 0);
-    *mPC++ = A64_MOVK_W(mTmpReg2, (imm >> 16) & 0x0000FFFF, 16);
-    *mPC++ = A64_AND_W(Rd,mTmpReg1, mTmpReg2);
-}
-
-// ----------------------------------------------------------------------------
-// Bit manipulation
-// ----------------------------------------------------------------------------
-void ArmToArm64Assembler::UBFX(int cc, int Rd, int Rn, int lsb, int width)
-{
-    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-    *mPC++ = A64_UBFM_W(Rd, Rn, lsb, lsb + width - 1);
-}
-// ----------------------------------------------------------------------------
-// Shifters...
-// ----------------------------------------------------------------------------
-int ArmToArm64Assembler::buildImmediate(
-        uint32_t immediate, uint32_t& rot, uint32_t& imm)
-{
-    rot = 0;
-    imm = immediate;
-    return 0; // Always true
-}
-
-
-bool ArmToArm64Assembler::isValidImmediate(uint32_t immediate)
-{
-    uint32_t rot, imm;
-    return buildImmediate(immediate, rot, imm) == 0;
-}
-
-uint32_t ArmToArm64Assembler::imm(uint32_t immediate)
-{
-    mAddrMode.immediate = immediate;
-    mAddrMode.writeback = false;
-    mAddrMode.preindex  = false;
-    mAddrMode.postindex = false;
-    return OPERAND_IMM;
-
-}
-
-uint32_t ArmToArm64Assembler::reg_imm(int Rm, int type, uint32_t shift)
-{
-    mAddrMode.reg_imm_Rm = Rm;
-    mAddrMode.reg_imm_type = type;
-    mAddrMode.reg_imm_shift = shift;
-    return OPERAND_REG_IMM;
-}
-
-uint32_t ArmToArm64Assembler::reg_rrx(int /*Rm*/)
-{
-    NOT_IMPLEMENTED();
-    return OPERAND_UNSUPPORTED;
-}
-
-uint32_t ArmToArm64Assembler::reg_reg(int /*Rm*/, int /*type*/, int /*Rs*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-    return OPERAND_UNSUPPORTED;
-}
-// ----------------------------------------------------------------------------
-// Addressing modes...
-// ----------------------------------------------------------------------------
-uint32_t ArmToArm64Assembler::immed12_pre(int32_t immed12, int W)
-{
-    mAddrMode.immediate = immed12;
-    mAddrMode.writeback = W;
-    mAddrMode.preindex  = true;
-    mAddrMode.postindex = false;
-    return OPERAND_IMM;
-}
-
-uint32_t ArmToArm64Assembler::immed12_post(int32_t immed12)
-{
-    mAddrMode.immediate = immed12;
-    mAddrMode.writeback = true;
-    mAddrMode.preindex  = false;
-    mAddrMode.postindex = true;
-    return OPERAND_IMM;
-}
-
-uint32_t ArmToArm64Assembler::reg_scale_pre(int Rm, int type,
-        uint32_t shift, int W)
-{
-    if(type != 0 || shift != 0 || W != 0)
-    {
-        NOT_IMPLEMENTED(); //Not required
-        return OPERAND_UNSUPPORTED;
-    }
-    else
-    {
-        mAddrMode.reg_offset = Rm;
-        return OPERAND_REG_OFFSET;
-    }
-}
-
-uint32_t ArmToArm64Assembler::reg_scale_post(int /*Rm*/, int /*type*/, uint32_t /*shift*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-    return OPERAND_UNSUPPORTED;
-}
-
-uint32_t ArmToArm64Assembler::immed8_pre(int32_t immed8, int W)
-{
-    mAddrMode.immediate = immed8;
-    mAddrMode.writeback = W;
-    mAddrMode.preindex  = true;
-    mAddrMode.postindex = false;
-    return OPERAND_IMM;
-}
-
-uint32_t ArmToArm64Assembler::immed8_post(int32_t immed8)
-{
-    mAddrMode.immediate = immed8;
-    mAddrMode.writeback = true;
-    mAddrMode.preindex  = false;
-    mAddrMode.postindex = true;
-    return OPERAND_IMM;
-}
-
-uint32_t ArmToArm64Assembler::reg_pre(int Rm, int W)
-{
-    if(W != 0)
-    {
-        NOT_IMPLEMENTED(); //Not required
-        return OPERAND_UNSUPPORTED;
-    }
-    else
-    {
-        mAddrMode.reg_offset = Rm;
-        return OPERAND_REG_OFFSET;
-    }
-}
-
-uint32_t ArmToArm64Assembler::reg_post(int /*Rm*/)
-{
-    NOT_IMPLEMENTED(); //Not required
-    return OPERAND_UNSUPPORTED;
-}
-
-// ----------------------------------------------------------------------------
-// A64 instructions
-// ----------------------------------------------------------------------------
-
-static __unused const char * dataTransferOpName[] =
-{
-    "LDR","LDRB","LDRH","STR","STRB","STRH"
-};
-
-static const uint32_t dataTransferOpCode [] =
-{
-    ((0xB8u << 24) | (0x3 << 21) | (0x6 << 13) | (0x0 << 12) |(0x1 << 11)),
-    ((0x38u << 24) | (0x3 << 21) | (0x6 << 13) | (0x1 << 12) |(0x1 << 11)),
-    ((0x78u << 24) | (0x3 << 21) | (0x6 << 13) | (0x0 << 12) |(0x1 << 11)),
-    ((0xB8u << 24) | (0x1 << 21) | (0x6 << 13) | (0x0 << 12) |(0x1 << 11)),
-    ((0x38u << 24) | (0x1 << 21) | (0x6 << 13) | (0x1 << 12) |(0x1 << 11)),
-    ((0x78u << 24) | (0x1 << 21) | (0x6 << 13) | (0x0 << 12) |(0x1 << 11))
-};
-uint32_t ArmToArm64Assembler::A64_LDRSTR_Wm_SXTW_0(uint32_t op,
-                            uint32_t size, uint32_t Rt,
-                            uint32_t Rn, uint32_t Rm)
-{
-    if(size == 32)
-    {
-        LOG_INSTR("%s W%d, [X%d, W%d, SXTW #0]\n",
-                   dataTransferOpName[op], Rt, Rn, Rm);
-        return(dataTransferOpCode[op] | (Rm << 16) | (Rn << 5) | Rt);
-    }
-    else
-    {
-        LOG_INSTR("%s X%d, [X%d, W%d, SXTW #0]\n",
-                  dataTransferOpName[op], Rt, Rn, Rm);
-        return(dataTransferOpCode[op] | (0x1<<30) | (Rm<<16) | (Rn<<5)|Rt);
-    }
-}
-
-uint32_t ArmToArm64Assembler::A64_STR_IMM_PreIndex(uint32_t Rt,
-                            uint32_t Rn, int32_t simm)
-{
-    if(Rn == 31)
-        LOG_INSTR("STR W%d, [SP, #%d]!\n", Rt, simm);
-    else
-        LOG_INSTR("STR W%d, [X%d, #%d]!\n", Rt, Rn, simm);
-
-    uint32_t imm9 = (unsigned)(simm) & 0x01FF;
-    return (0xB8 << 24) | (imm9 << 12) | (0x3 << 10) | (Rn << 5) | Rt;
-}
-
-uint32_t ArmToArm64Assembler::A64_LDR_IMM_PostIndex(uint32_t Rt,
-                            uint32_t Rn, int32_t simm)
-{
-    if(Rn == 31)
-        LOG_INSTR("LDR W%d, [SP], #%d\n",Rt,simm);
-    else
-        LOG_INSTR("LDR W%d, [X%d], #%d\n",Rt, Rn, simm);
-
-    uint32_t imm9 = (unsigned)(simm) & 0x01FF;
-    return (0xB8 << 24) | (0x1 << 22) |
-             (imm9 << 12) | (0x1 << 10) | (Rn << 5) | Rt;
-
-}
-uint32_t ArmToArm64Assembler::A64_ADD_X_Wm_SXTW(uint32_t Rd,
-                               uint32_t Rn,
-                               uint32_t Rm,
-                               uint32_t amount)
-{
-    LOG_INSTR("ADD X%d, X%d, W%d, SXTW #%d\n", Rd, Rn, Rm, amount);
-    return ((0x8B << 24) | (0x1 << 21) |(Rm << 16) |
-              (0x6 << 13) | (amount << 10) | (Rn << 5) | Rd);
-
-}
-
-uint32_t ArmToArm64Assembler::A64_SUB_X_Wm_SXTW(uint32_t Rd,
-                               uint32_t Rn,
-                               uint32_t Rm,
-                               uint32_t amount)
-{
-    LOG_INSTR("SUB X%d, X%d, W%d, SXTW #%d\n", Rd, Rn, Rm, amount);
-    return ((0xCB << 24) | (0x1 << 21) |(Rm << 16) |
-            (0x6 << 13) | (amount << 10) | (Rn << 5) | Rd);
-
-}
-
-uint32_t ArmToArm64Assembler::A64_B_COND(uint32_t cc, uint32_t offset)
-{
-    LOG_INSTR("B.%s #.+%d\n", cc_codes[cc], offset);
-    return (0x54 << 24) | ((offset/4) << 5) | (cc);
-
-}
-uint32_t ArmToArm64Assembler::A64_ADD_X(uint32_t Rd, uint32_t Rn,
-                                          uint32_t Rm, uint32_t shift,
-                                          uint32_t amount)
-{
-    LOG_INSTR("ADD X%d, X%d, X%d, %s #%d\n",
-               Rd, Rn, Rm, shift_codes[shift], amount);
-    return ((0x8B << 24) | (shift << 22) | ( Rm << 16) |
-            (amount << 10) |(Rn << 5) | Rd);
-}
-uint32_t ArmToArm64Assembler::A64_ADD_IMM_X(uint32_t Rd, uint32_t Rn,
-                                          uint32_t imm, uint32_t shift)
-{
-    LOG_INSTR("ADD X%d, X%d, #%d, LSL #%d\n", Rd, Rn, imm, shift);
-    return (0x91 << 24) | ((shift/12) << 22) | (imm << 10) | (Rn << 5) | Rd;
-}
-
-uint32_t ArmToArm64Assembler::A64_SUB_IMM_X(uint32_t Rd, uint32_t Rn,
-                                          uint32_t imm, uint32_t shift)
-{
-    LOG_INSTR("SUB X%d, X%d, #%d, LSL #%d\n", Rd, Rn, imm, shift);
-    return (0xD1 << 24) | ((shift/12) << 22) | (imm << 10) | (Rn << 5) | Rd;
-}
-
-uint32_t ArmToArm64Assembler::A64_ADD_W(uint32_t Rd, uint32_t Rn,
-                                          uint32_t Rm, uint32_t shift,
-                                          uint32_t amount)
-{
-    LOG_INSTR("ADD W%d, W%d, W%d, %s #%d\n",
-               Rd, Rn, Rm, shift_codes[shift], amount);
-    return ((0x0B << 24) | (shift << 22) | ( Rm << 16) |
-            (amount << 10) |(Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_SUB_W(uint32_t Rd, uint32_t Rn,
-                                          uint32_t Rm, uint32_t shift,
-                                          uint32_t amount,
-                                          uint32_t setflag)
-{
-    if(setflag == 0)
-    {
-        LOG_INSTR("SUB W%d, W%d, W%d, %s #%d\n",
-               Rd, Rn, Rm, shift_codes[shift], amount);
-        return ((0x4B << 24) | (shift << 22) | ( Rm << 16) |
-                (amount << 10) |(Rn << 5) | Rd);
-    }
-    else
-    {
-        LOG_INSTR("SUBS W%d, W%d, W%d, %s #%d\n",
-                   Rd, Rn, Rm, shift_codes[shift], amount);
-        return ((0x6B << 24) | (shift << 22) | ( Rm << 16) |
-                (amount << 10) |(Rn << 5) | Rd);
-    }
-}
-
-uint32_t ArmToArm64Assembler::A64_AND_W(uint32_t Rd, uint32_t Rn,
-                                          uint32_t Rm, uint32_t shift,
-                                          uint32_t amount)
-{
-    LOG_INSTR("AND W%d, W%d, W%d, %s #%d\n",
-               Rd, Rn, Rm, shift_codes[shift], amount);
-    return ((0x0A << 24) | (shift << 22) | ( Rm << 16) |
-            (amount << 10) |(Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_ORR_W(uint32_t Rd, uint32_t Rn,
-                                          uint32_t Rm, uint32_t shift,
-                                          uint32_t amount)
-{
-    LOG_INSTR("ORR W%d, W%d, W%d, %s #%d\n",
-               Rd, Rn, Rm, shift_codes[shift], amount);
-    return ((0x2A << 24) | (shift << 22) | ( Rm << 16) |
-            (amount << 10) |(Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_ORN_W(uint32_t Rd, uint32_t Rn,
-                                          uint32_t Rm, uint32_t shift,
-                                          uint32_t amount)
-{
-    LOG_INSTR("ORN W%d, W%d, W%d, %s #%d\n",
-               Rd, Rn, Rm, shift_codes[shift], amount);
-    return ((0x2A << 24) | (shift << 22) | (0x1 << 21) | ( Rm << 16) |
-            (amount << 10) |(Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_CSEL_X(uint32_t Rd, uint32_t Rn,
-                                           uint32_t Rm, uint32_t cond)
-{
-    LOG_INSTR("CSEL X%d, X%d, X%d, %s\n", Rd, Rn, Rm, cc_codes[cond]);
-    return ((0x9A << 24)|(0x1 << 23)|(Rm << 16) |(cond << 12)| (Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_CSEL_W(uint32_t Rd, uint32_t Rn,
-                                           uint32_t Rm, uint32_t cond)
-{
-    LOG_INSTR("CSEL W%d, W%d, W%d, %s\n", Rd, Rn, Rm, cc_codes[cond]);
-    return ((0x1A << 24)|(0x1 << 23)|(Rm << 16) |(cond << 12)| (Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_RET(uint32_t Rn)
-{
-    LOG_INSTR("RET X%d\n", Rn);
-    return ((0xD6 << 24) | (0x1 << 22) | (0x1F << 16) | (Rn << 5));
-}
-
-uint32_t ArmToArm64Assembler::A64_MOVZ_X(uint32_t Rd, uint32_t imm,
-                                         uint32_t shift)
-{
-    LOG_INSTR("MOVZ X%d, #0x%x, LSL #%d\n", Rd, imm, shift);
-    return(0xD2 << 24) | (0x1 << 23) | ((shift/16) << 21) |  (imm << 5) | Rd;
-}
-
-uint32_t ArmToArm64Assembler::A64_MOVK_W(uint32_t Rd, uint32_t imm,
-                                         uint32_t shift)
-{
-    LOG_INSTR("MOVK W%d, #0x%x, LSL #%d\n", Rd, imm, shift);
-    return (0x72 << 24) | (0x1 << 23) | ((shift/16) << 21) | (imm << 5) | Rd;
-}
-
-uint32_t ArmToArm64Assembler::A64_MOVZ_W(uint32_t Rd, uint32_t imm,
-                                         uint32_t shift)
-{
-    LOG_INSTR("MOVZ W%d, #0x%x, LSL #%d\n", Rd, imm, shift);
-    return(0x52 << 24) | (0x1 << 23) | ((shift/16) << 21) |  (imm << 5) | Rd;
-}
-
-uint32_t ArmToArm64Assembler::A64_SMADDL(uint32_t Rd, uint32_t Rn,
-                                           uint32_t Rm, uint32_t Ra)
-{
-    LOG_INSTR("SMADDL X%d, W%d, W%d, X%d\n",Rd, Rn, Rm, Ra);
-    return ((0x9B << 24) | (0x1 << 21) | (Rm << 16)|(Ra << 10)|(Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_MADD_W(uint32_t Rd, uint32_t Rn,
-                                           uint32_t Rm, uint32_t Ra)
-{
-    LOG_INSTR("MADD W%d, W%d, W%d, W%d\n",Rd, Rn, Rm, Ra);
-    return ((0x1B << 24) | (Rm << 16) | (Ra << 10) |(Rn << 5) | Rd);
-}
-
-uint32_t ArmToArm64Assembler::A64_SBFM_W(uint32_t Rd, uint32_t Rn,
-                                           uint32_t immr, uint32_t imms)
-{
-    LOG_INSTR("SBFM W%d, W%d, #%d, #%d\n", Rd, Rn, immr, imms);
-    return ((0x13 << 24) | (immr << 16) | (imms << 10) | (Rn << 5) | Rd);
-
-}
-uint32_t ArmToArm64Assembler::A64_UBFM_W(uint32_t Rd, uint32_t Rn,
-                                           uint32_t immr, uint32_t imms)
-{
-    LOG_INSTR("UBFM W%d, W%d, #%d, #%d\n", Rd, Rn, immr, imms);
-    return ((0x53 << 24) | (immr << 16) | (imms << 10) | (Rn << 5) | Rd);
-
-}
-uint32_t ArmToArm64Assembler::A64_UBFM_X(uint32_t Rd, uint32_t Rn,
-                                           uint32_t immr, uint32_t imms)
-{
-    LOG_INSTR("UBFM X%d, X%d, #%d, #%d\n", Rd, Rn, immr, imms);
-    return ((0xD3 << 24) | (0x1 << 22) |
-            (immr << 16) | (imms << 10) | (Rn << 5) | Rd);
-
-}
-uint32_t ArmToArm64Assembler::A64_EXTR_W(uint32_t Rd, uint32_t Rn,
-                                           uint32_t Rm, uint32_t lsb)
-{
-    LOG_INSTR("EXTR W%d, W%d, W%d, #%d\n", Rd, Rn, Rm, lsb);
-    return (0x13 << 24)|(0x1 << 23) | (Rm << 16) | (lsb << 10)|(Rn << 5) | Rd;
-}
-
-}; // namespace android
diff --git a/libpixelflinger/codeflinger/Arm64Assembler.h b/libpixelflinger/codeflinger/Arm64Assembler.h
deleted file mode 100644
index 527c757..0000000
--- a/libpixelflinger/codeflinger/Arm64Assembler.h
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef ANDROID_ARMTOARM64ASSEMBLER_H
-#define ANDROID_ARMTOARM64ASSEMBLER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "tinyutils/smartpointer.h"
-#include "utils/Vector.h"
-#include "utils/KeyedVector.h"
-
-#include "tinyutils/smartpointer.h"
-#include "codeflinger/ARMAssemblerInterface.h"
-#include "codeflinger/CodeCache.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-class ArmToArm64Assembler : public ARMAssemblerInterface
-{
-public:
-    explicit    ArmToArm64Assembler(const sp<Assembly>& assembly);
-    explicit    ArmToArm64Assembler(void *base);
-    virtual     ~ArmToArm64Assembler();
-
-    uint32_t*   base() const;
-    uint32_t*   pc() const;
-
-
-    void        disassemble(const char* name);
-
-    // ------------------------------------------------------------------------
-    // ARMAssemblerInterface...
-    // ------------------------------------------------------------------------
-
-    virtual void    reset();
-
-    virtual int     generate(const char* name);
-    virtual int     getCodegenArch();
-
-    virtual void    prolog();
-    virtual void    epilog(uint32_t touched);
-    virtual void    comment(const char* string);
-
-
-    // -----------------------------------------------------------------------
-    // shifters and addressing modes
-    // -----------------------------------------------------------------------
-
-    // shifters...
-    virtual bool        isValidImmediate(uint32_t immed);
-    virtual int         buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm);
-
-    virtual uint32_t    imm(uint32_t immediate);
-    virtual uint32_t    reg_imm(int Rm, int type, uint32_t shift);
-    virtual uint32_t    reg_rrx(int Rm);
-    virtual uint32_t    reg_reg(int Rm, int type, int Rs);
-
-    // addressing modes...
-    virtual uint32_t    immed12_pre(int32_t immed12, int W=0);
-    virtual uint32_t    immed12_post(int32_t immed12);
-    virtual uint32_t    reg_scale_pre(int Rm, int type=0, uint32_t shift=0, int W=0);
-    virtual uint32_t    reg_scale_post(int Rm, int type=0, uint32_t shift=0);
-    virtual uint32_t    immed8_pre(int32_t immed8, int W=0);
-    virtual uint32_t    immed8_post(int32_t immed8);
-    virtual uint32_t    reg_pre(int Rm, int W=0);
-    virtual uint32_t    reg_post(int Rm);
-
-
-    virtual void    dataProcessing(int opcode, int cc, int s,
-                                int Rd, int Rn,
-                                uint32_t Op2);
-    virtual void MLA(int cc, int s,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void MUL(int cc, int s,
-                int Rd, int Rm, int Rs);
-    virtual void UMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void UMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-
-    virtual void B(int cc, uint32_t* pc);
-    virtual void BL(int cc, uint32_t* pc);
-    virtual void BX(int cc, int Rn);
-    virtual void label(const char* theLabel);
-    virtual void B(int cc, const char* label);
-    virtual void BL(int cc, const char* label);
-
-    virtual uint32_t* pcForLabel(const char* label);
-
-    virtual void ADDR_LDR(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void ADDR_ADD(int cc, int s, int Rd,
-                int Rn, uint32_t Op2);
-    virtual void ADDR_SUB(int cc, int s, int Rd,
-                int Rn, uint32_t Op2);
-    virtual void ADDR_STR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-
-    virtual void LDR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STRB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRH (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRSB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRSH(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STRH (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-
-
-    virtual void LDM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-    virtual void STM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-
-    virtual void SWP(int cc, int Rn, int Rd, int Rm);
-    virtual void SWPB(int cc, int Rn, int Rd, int Rm);
-    virtual void SWI(int cc, uint32_t comment);
-
-    virtual void PLD(int Rn, uint32_t offset);
-    virtual void CLZ(int cc, int Rd, int Rm);
-    virtual void QADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QDADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void QDSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs);
-    virtual void SMULW(int cc, int y,
-                int Rd, int Rm, int Rs);
-    virtual void SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm);
-    virtual void SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void UXTB16(int cc, int Rd, int Rm, int rotate);
-    virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width);
-
-private:
-    ArmToArm64Assembler(const ArmToArm64Assembler& rhs);
-    ArmToArm64Assembler& operator = (const ArmToArm64Assembler& rhs);
-
-    // -----------------------------------------------------------------------
-    // helper functions
-    // -----------------------------------------------------------------------
-
-    void dataTransfer(int operation, int cc, int Rd, int Rn,
-                      uint32_t operand_type, uint32_t size = 32);
-    void dataProcessingCommon(int opcode, int s,
-                      int Rd, int Rn, uint32_t Op2);
-
-    // -----------------------------------------------------------------------
-    // Arm64 instructions
-    // -----------------------------------------------------------------------
-    uint32_t A64_B_COND(uint32_t cc, uint32_t offset);
-    uint32_t A64_RET(uint32_t Rn);
-
-    uint32_t A64_LDRSTR_Wm_SXTW_0(uint32_t operation,
-                                uint32_t size, uint32_t Rt,
-                                uint32_t Rn, uint32_t Rm);
-
-    uint32_t A64_STR_IMM_PreIndex(uint32_t Rt, uint32_t Rn, int32_t simm);
-    uint32_t A64_LDR_IMM_PostIndex(uint32_t Rt,uint32_t Rn, int32_t simm);
-
-    uint32_t A64_ADD_X_Wm_SXTW(uint32_t Rd, uint32_t Rn, uint32_t Rm,
-                               uint32_t amount);
-    uint32_t A64_SUB_X_Wm_SXTW(uint32_t Rd, uint32_t Rn, uint32_t Rm,
-                               uint32_t amount);
-
-    uint32_t A64_ADD_IMM_X(uint32_t Rd, uint32_t Rn,
-                           uint32_t imm, uint32_t shift = 0);
-    uint32_t A64_SUB_IMM_X(uint32_t Rd, uint32_t Rn,
-                           uint32_t imm, uint32_t shift = 0);
-
-    uint32_t A64_ADD_X(uint32_t Rd, uint32_t Rn,
-                       uint32_t Rm, uint32_t shift = 0, uint32_t amount = 0);
-    uint32_t A64_ADD_W(uint32_t Rd, uint32_t Rn, uint32_t Rm,
-                       uint32_t shift = 0, uint32_t amount = 0);
-    uint32_t A64_SUB_W(uint32_t Rd, uint32_t Rn, uint32_t Rm,
-                       uint32_t shift = 0, uint32_t amount = 0,
-                       uint32_t setflag = 0);
-    uint32_t A64_AND_W(uint32_t Rd, uint32_t Rn,
-                       uint32_t Rm, uint32_t shift = 0, uint32_t amount = 0);
-    uint32_t A64_ORR_W(uint32_t Rd, uint32_t Rn,
-                       uint32_t Rm, uint32_t shift = 0, uint32_t amount = 0);
-    uint32_t A64_ORN_W(uint32_t Rd, uint32_t Rn,
-                       uint32_t Rm, uint32_t shift = 0, uint32_t amount = 0);
-
-    uint32_t A64_MOVZ_W(uint32_t Rd, uint32_t imm, uint32_t shift);
-    uint32_t A64_MOVZ_X(uint32_t Rd, uint32_t imm, uint32_t shift);
-    uint32_t A64_MOVK_W(uint32_t Rd, uint32_t imm, uint32_t shift);
-
-    uint32_t A64_SMADDL(uint32_t Rd, uint32_t Rn, uint32_t Rm, uint32_t Ra);
-    uint32_t A64_MADD_W(uint32_t Rd, uint32_t Rn, uint32_t Rm, uint32_t Ra);
-
-    uint32_t A64_SBFM_W(uint32_t Rd, uint32_t Rn,
-                        uint32_t immr, uint32_t imms);
-    uint32_t A64_UBFM_W(uint32_t Rd, uint32_t Rn,
-                        uint32_t immr, uint32_t imms);
-    uint32_t A64_UBFM_X(uint32_t Rd, uint32_t Rn,
-                        uint32_t immr, uint32_t imms);
-
-    uint32_t A64_EXTR_W(uint32_t Rd, uint32_t Rn, uint32_t Rm, uint32_t lsb);
-    uint32_t A64_CSEL_X(uint32_t Rd, uint32_t Rn, uint32_t Rm, uint32_t cond);
-    uint32_t A64_CSEL_W(uint32_t Rd, uint32_t Rn, uint32_t Rm, uint32_t cond);
-
-    uint32_t*       mBase;
-    uint32_t*       mPC;
-    uint32_t*       mPrologPC;
-    int64_t         mDuration;
-    uint32_t        mTmpReg1, mTmpReg2, mTmpReg3, mZeroReg;
-
-    struct branch_target_t {
-        inline branch_target_t() : label(0), pc(0) { }
-        inline branch_target_t(const char* l, uint32_t* p)
-            : label(l), pc(p) { }
-        const char* label;
-        uint32_t*   pc;
-    };
-
-    sp<Assembly>    mAssembly;
-    Vector<branch_target_t>                 mBranchTargets;
-    KeyedVector< const char*, uint32_t* >   mLabels;
-    KeyedVector< uint32_t*, const char* >   mLabelsInverseMapping;
-    KeyedVector< uint32_t*, const char* >   mComments;
-
-    enum operand_type_t
-    {
-        OPERAND_REG = 0x20,
-        OPERAND_IMM,
-        OPERAND_REG_IMM,
-        OPERAND_REG_OFFSET,
-        OPERAND_UNSUPPORTED
-    };
-
-    struct addr_mode_t {
-        int32_t         immediate;
-        bool            writeback;
-        bool            preindex;
-        bool            postindex;
-        int32_t         reg_imm_Rm;
-        int32_t         reg_imm_type;
-        uint32_t        reg_imm_shift;
-        int32_t         reg_offset;
-    } mAddrMode;
-
-};
-
-}; // namespace android
-
-#endif //ANDROID_ARM64ASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/Arm64Disassembler.cpp b/libpixelflinger/codeflinger/Arm64Disassembler.cpp
deleted file mode 100644
index 70f1ff1..0000000
--- a/libpixelflinger/codeflinger/Arm64Disassembler.cpp
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <inttypes.h>
-#include <string.h>
-
-struct disasm_table_entry_t
-{
-    uint32_t       mask;
-    uint32_t       value;
-    const char*    instr_template;
-};
-
-
-static disasm_table_entry_t disasm_table[] =
-{
-    {0xff000000, 0x91000000, "add <xd|sp>, <xn|sp>, #<imm1>, <shift1>"},
-    {0xff000000, 0xd1000000, "sub <xd|sp>, <xn|sp>, #<imm1>, <shift1>"},
-    {0xff200000, 0x8b000000, "add <xd>, <xn>, <xm>, <shift2> #<amt1>"},
-    {0xff200000, 0x0b000000, "add <wd>, <wn>, <wm>, <shift2> #<amt1>"},
-    {0xff200000, 0x4b000000, "sub <wd>, <wn>, <wm>, <shift2> #<amt1>"},
-    {0xff200000, 0x6b000000, "subs <wd>, <wn>, <wm>, <shift2> #<amt1>"},
-    {0xff200000, 0x0a000000, "and <wd>, <wn>, <wm>, <shift2> #<amt1>"},
-    {0xff200000, 0x2a000000, "orr <wd>, <wn>, <wm>, <shift2> #<amt1>"},
-    {0xff200000, 0x2a200000, "orn <wd>, <wn>, <wm>, <shift2> #<amt1>"},
-    {0xff800000, 0x72800000, "movk <wd>, #<imm2>, lsl #<shift3>"},
-    {0xff800000, 0x52800000, "movz <wd>, #<imm2>, lsl #<shift3>"},
-    {0xff800000, 0xd2800000, "movz <xd>, #<imm2>, lsl #<shift3>"},
-    {0xffe00c00, 0x1a800000, "csel <wd>, <wn>, <wm>, <cond1>"},
-    {0xffe00c00, 0x9a800000, "csel <xd>, <xn>, <xm>, <cond1>"},
-    {0xffe00c00, 0x5a800000, "csinv <wd>, <wn>, <wm>, <cond1>"},
-    {0xffe08000, 0x1b000000, "madd <wd>, <wn>, <wm>, <wa>"},
-    {0xffe08000, 0x9b200000, "smaddl <xd>, <wn>, <wm>, <xa>"},
-    {0xffe04c00, 0xb8604800, "ldr <wt>, [<xn|sp>, <r1><m1>, <ext1> #<amt2>]"},
-    {0xffe04c00, 0xb8204800, "str <wt>, [<xn|sp>, <r1><m1>, <ext1> #<amt2>]"},
-    {0xffe04c00, 0xf8604800, "ldr <xt>, [<xn|sp>, <r1><m1>, <ext1> #<amt3>]"},
-    {0xffe04c00, 0xf8204800, "str <xt>, [<xn|sp>, <r1><m1>, <ext1> #<amt3>]"},
-    {0xffe04c00, 0x38604800, "ldrb <wt>, [<xn|sp>, <r1><m1>, <ext1> <amt5>]"},
-    {0xffe04c00, 0x38204800, "strb <wt>, [<xn|sp>, <r1><m1>, <ext1> <amt5>]"},
-    {0xffe04c00, 0x78604800, "ldrh <wt>, [<xn|sp>, <r1><m1>, <ext1> #<amt6>]"},
-    {0xffe04c00, 0x78204800, "strh <wt>, [<xn|sp>, <r1><m1>, <ext1> #<amt6>]"},
-    {0xffe00c00, 0xb8400400, "ldr <wt>, [<xn|sp>], #<simm1>"},
-    {0xffe00c00, 0xb8000c00, "str <wt>, [<xn|sp>, #<simm1>]!"},
-    {0xffc00000, 0x13000000, "sbfm <wd>, <wn>, #<immr1>, #<imms1>"},
-    {0xffc00000, 0x53000000, "ubfm <wd>, <wn>, #<immr1>, #<imms1>"},
-    {0xffc00000, 0xd3400000, "ubfm <xd>, <xn>, #<immr1>, #<imms1>"},
-    {0xffe00000, 0x13800000, "extr <wd>, <wn>, <wm>, #<lsb1>"},
-    {0xff000000, 0x54000000, "b.<cond2> <label1>"},
-    {0xfffffc1f, 0xd65f0000, "ret <xn>"},
-    {0xffe00000, 0x8b200000, "add <xd|sp>, <xn|sp>, <r2><m1>, <ext2> #<amt4>"},
-    {0xffe00000, 0xcb200000, "sub <xd|sp>, <xn|sp>, <r2><m1>, <ext2> #<amt4>"}
-};
-
-static int32_t bits_signed(uint32_t instr, uint32_t msb, uint32_t lsb)
-{
-    int32_t value;
-    value   = ((int32_t)instr) << (31 - msb);
-    value >>= (31 - msb);
-    value >>= lsb;
-    return value;
-}
-static uint32_t bits_unsigned(uint32_t instr, uint32_t msb, uint32_t lsb)
-{
-    uint32_t width = msb - lsb + 1;
-    uint32_t mask  = (1 << width) - 1;
-    return ((instr >> lsb) & mask);
-}
-
-static void get_token(const char *instr, uint32_t index, char *token)
-{
-    uint32_t i, j;
-    for(i = index, j = 0; i < strlen(instr); ++i)
-    {
-        if(instr[index] == '<' && instr[i] == '>')
-        {
-            token[j++] = instr[i];
-            break;
-        }
-        else if(instr[index] != '<' && instr[i] == '<')
-        {
-            break;
-        }
-        else
-        {
-            token[j++] = instr[i];
-        }
-    }
-    token[j] = '\0';
-    return;
-}
-
-
-static const char * token_cc_table[] =
-{
-    "eq", "ne", "cs", "cc", "mi",
-    "pl", "vs", "vc", "hi", "ls",
-    "ge", "lt", "gt", "le", "al", "nv"
-};
-
-static void decode_rx_zr_token(uint32_t reg, const char *prefix, char *instr_part)
-{
-    if(reg == 31)
-        sprintf(instr_part, "%s%s", prefix, "zr");
-    else
-        sprintf(instr_part, "%s%d", prefix, reg);
-}
-
-static void decode_token(uint32_t code, char *token, char *instr_part)
-{
-    if(strcmp(token, "<imm1>") == 0)
-        sprintf(instr_part, "0x%x", bits_unsigned(code, 21,10));
-    else if(strcmp(token, "<imm2>") == 0)
-        sprintf(instr_part, "0x%x", bits_unsigned(code, 20,5));
-    else if(strcmp(token, "<shift1>") == 0)
-        sprintf(instr_part, "lsl #%d", bits_unsigned(code, 23,22) * 12);
-    else if(strcmp(token, "<shift2>") == 0)
-    {
-        static const char * shift2_table[] = { "lsl", "lsr", "asr", "ror"};
-        sprintf(instr_part, "%s", shift2_table[bits_unsigned(code, 23,22)]);
-    }
-    else if(strcmp(token, "<shift3>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 22,21) * 16);
-    else if(strcmp(token, "<amt1>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 15,10));
-    else if(strcmp(token, "<amt2>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 12,12) * 2);
-    else if(strcmp(token, "<amt3>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 12,12) * 3);
-    else if(strcmp(token, "<amt4>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 12,10));
-    else if(strcmp(token, "<amt5>") == 0)
-    {
-        static const char * amt5_table[] = {"", "#0"};
-        sprintf(instr_part, "%s", amt5_table[bits_unsigned(code, 12,12)]);
-    }
-    else if(strcmp(token, "<amt6>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 12,12));
-    else if(strcmp(token, "<simm1>") == 0)
-        sprintf(instr_part, "%d", bits_signed(code, 20,12));
-    else if(strcmp(token, "<immr1>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 21,16));
-    else if(strcmp(token, "<imms1>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 15,10));
-    else if(strcmp(token, "<lsb1>") == 0)
-        sprintf(instr_part, "%d", bits_unsigned(code, 15,10));
-    else if(strcmp(token, "<cond1>") == 0)
-        sprintf(instr_part, "%s", token_cc_table[bits_unsigned(code, 15,12)]);
-    else if(strcmp(token, "<cond2>") == 0)
-        sprintf(instr_part, "%s", token_cc_table[bits_unsigned(code, 4,0)]);
-    else if(strcmp(token, "<r1>") == 0)
-    {
-        const char * token_r1_table[] =
-        {
-            "reserved", "reserved", "w", "x",
-            "reserved", "reserved", "w", "x"
-        };
-        sprintf(instr_part, "%s", token_r1_table[bits_unsigned(code, 15,13)]);
-    }
-    else if(strcmp(token, "<r2>") == 0)
-    {
-        static const char * token_r2_table[] =
-        {
-                "w","w","w", "x", "w", "w", "w", "x"
-        };
-        sprintf(instr_part, "%s", token_r2_table[bits_unsigned(code, 15,13)]);
-    }
-    else if(strcmp(token, "<m1>") == 0)
-    {
-        uint32_t reg = bits_unsigned(code, 20,16);
-        if(reg == 31)
-            sprintf(instr_part, "%s", "zr");
-        else
-            sprintf(instr_part, "%d", reg);
-    }
-    else if(strcmp(token, "<ext1>") == 0)
-    {
-        static const char * token_ext1_table[] =
-        {
-             "reserved","reserved","uxtw", "lsl",
-             "reserved","reserved", "sxtw", "sxtx"
-        };
-        sprintf(instr_part, "%s", token_ext1_table[bits_unsigned(code, 15,13)]);
-    }
-    else if(strcmp(token, "<ext2>") == 0)
-    {
-        static const char * token_ext2_table[] =
-        {
-                "uxtb","uxth","uxtw","uxtx",
-                "sxtb","sxth","sxtw","sxtx"
-        };
-        sprintf(instr_part, "%s", token_ext2_table[bits_unsigned(code, 15,13)]);
-    }
-    else if (strcmp(token, "<label1>") == 0)
-    {
-        int32_t offset = bits_signed(code, 23,5) * 4;
-        if(offset > 0)
-            sprintf(instr_part, "#.+%d", offset);
-        else
-            sprintf(instr_part, "#.-%d", -offset);
-    }
-    else if (strcmp(token, "<xn|sp>") == 0)
-    {
-        uint32_t reg = bits_unsigned(code, 9, 5);
-        if(reg == 31)
-            sprintf(instr_part, "%s", "sp");
-        else
-            sprintf(instr_part, "x%d", reg);
-    }
-    else if (strcmp(token, "<xd|sp>") == 0)
-    {
-        uint32_t reg = bits_unsigned(code, 4, 0);
-        if(reg == 31)
-            sprintf(instr_part, "%s", "sp");
-        else
-            sprintf(instr_part, "x%d", reg);
-    }
-    else if (strcmp(token, "<xn>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 9, 5), "x", instr_part);
-    else if (strcmp(token, "<xd>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 4, 0), "x", instr_part);
-    else if (strcmp(token, "<xm>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 20, 16), "x", instr_part);
-    else if (strcmp(token, "<xa>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 14, 10), "x", instr_part);
-    else if (strcmp(token, "<xt>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 4, 0), "x", instr_part);
-    else if (strcmp(token, "<wn>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 9, 5), "w", instr_part);
-    else if (strcmp(token, "<wd>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 4, 0), "w", instr_part);
-    else if (strcmp(token, "<wm>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 20, 16), "w", instr_part);
-    else if (strcmp(token, "<wa>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 14, 10), "w", instr_part);
-    else if (strcmp(token, "<wt>") == 0)
-        decode_rx_zr_token(bits_unsigned(code, 4, 0), "w", instr_part);
-    else
-    {
-        sprintf(instr_part, "error");
-    }
-    return;
-}
-
-int arm64_disassemble(uint32_t code, char* instr)
-{
-    uint32_t i;
-    char token[256];
-    char instr_part[256];
-
-    if(instr == NULL)
-        return -1;
-
-    bool matched = false;
-    disasm_table_entry_t *entry = NULL;
-    for(i = 0; i < sizeof(disasm_table)/sizeof(disasm_table_entry_t); ++i)
-    {
-        entry = &disasm_table[i];
-        if((code & entry->mask) == entry->value)
-        {
-            matched = true;
-            break;
-        }
-    }
-    if(matched == false)
-    {
-        strcpy(instr, "Unknown Instruction");
-        return -1;
-    }
-    else
-    {
-        uint32_t index = 0;
-        uint32_t length = strlen(entry->instr_template);
-        instr[0] = '\0';
-        do
-        {
-            get_token(entry->instr_template, index, token);
-            if(token[0] == '<')
-            {
-                decode_token(code, token, instr_part);
-                strcat(instr, instr_part);
-            }
-            else
-            {
-                strcat(instr, token);
-            }
-            index += strlen(token);
-        }while(index < length);
-        return 0;
-    }
-}
diff --git a/libpixelflinger/codeflinger/Arm64Disassembler.h b/libpixelflinger/codeflinger/Arm64Disassembler.h
deleted file mode 100644
index 86f3aba..0000000
--- a/libpixelflinger/codeflinger/Arm64Disassembler.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef ANDROID_ARM64DISASSEMBLER_H
-#define ANDROID_ARM64DISASSEMBLER_H
-
-#include <inttypes.h>
-int arm64_disassemble(uint32_t code, char* instr);
-
-#endif //ANDROID_ARM64ASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/CodeCache.cpp b/libpixelflinger/codeflinger/CodeCache.cpp
deleted file mode 100644
index 32691a3..0000000
--- a/libpixelflinger/codeflinger/CodeCache.cpp
+++ /dev/null
@@ -1,217 +0,0 @@
-/* libs/pixelflinger/codeflinger/CodeCache.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "CodeCache"
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include <cutils/ashmem.h>
-#include <log/log.h>
-
-#include "CodeCache.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-#if defined(__arm__) || defined(__aarch64__)
-#include <unistd.h>
-#include <errno.h>
-#endif
-
-#if defined(__mips__)
-#include <asm/cachectl.h>
-#include <errno.h>
-#endif
-
-// ----------------------------------------------------------------------------
-// ----------------------------------------------------------------------------
-
-// A dlmalloc mspace is used to manage the code cache over a mmaped region.
-#define HAVE_MMAP 0
-#define HAVE_MREMAP 0
-#define HAVE_MORECORE 0
-#define MALLOC_ALIGNMENT 16
-#define MSPACES 1
-#define NO_MALLINFO 1
-#define ONLY_MSPACES 1
-// Custom heap error handling.
-#define PROCEED_ON_ERROR 0
-static void heap_error(const char* msg, const char* function, void* p);
-#define CORRUPTION_ERROR_ACTION(m) \
-    heap_error("HEAP MEMORY CORRUPTION", __FUNCTION__, NULL)
-#define USAGE_ERROR_ACTION(m,p) \
-    heap_error("ARGUMENT IS INVALID HEAP ADDRESS", __FUNCTION__, p)
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wexpansion-to-defined"
-#pragma GCC diagnostic ignored "-Wnull-pointer-arithmetic"
-#include "../../../../external/dlmalloc/malloc.c"
-#pragma GCC diagnostic pop
-
-static void heap_error(const char* msg, const char* function, void* p) {
-    ALOG(LOG_FATAL, LOG_TAG, "@@@ ABORTING: CODE FLINGER: %s IN %s addr=%p",
-         msg, function, p);
-    /* So that we can get a memory dump around p */
-    *((int **) 0xdeadbaad) = (int *) p;
-}
-
-// ----------------------------------------------------------------------------
-
-static void* gExecutableStore = NULL;
-static mspace gMspace = NULL;
-const size_t kMaxCodeCacheCapacity = 1024 * 1024;
-
-static mspace getMspace()
-{
-    if (gExecutableStore == NULL) {
-        int fd = ashmem_create_region("CodeFlinger code cache",
-                                      kMaxCodeCacheCapacity);
-        LOG_ALWAYS_FATAL_IF(fd < 0,
-                            "Creating code cache, ashmem_create_region "
-                            "failed with error '%s'", strerror(errno));
-        gExecutableStore = mmap(NULL, kMaxCodeCacheCapacity,
-                                PROT_READ | PROT_WRITE | PROT_EXEC,
-                                MAP_PRIVATE, fd, 0);
-        LOG_ALWAYS_FATAL_IF(gExecutableStore == MAP_FAILED,
-                            "Creating code cache, mmap failed with error "
-                            "'%s'", strerror(errno));
-        close(fd);
-        gMspace = create_mspace_with_base(gExecutableStore, kMaxCodeCacheCapacity,
-                                          /*locked=*/ false);
-        mspace_set_footprint_limit(gMspace, kMaxCodeCacheCapacity);
-    }
-    return gMspace;
-}
-
-Assembly::Assembly(size_t size)
-    : mCount(0), mSize(0)
-{
-    mBase = (uint32_t*)mspace_malloc(getMspace(), size);
-    LOG_ALWAYS_FATAL_IF(mBase == NULL,
-                        "Failed to create Assembly of size %zd in executable "
-                        "store of size %zd", size, kMaxCodeCacheCapacity);
-    mSize = size;
-}
-
-Assembly::~Assembly()
-{
-    mspace_free(getMspace(), mBase);
-}
-
-void Assembly::incStrong(const void*) const
-{
-    mCount.fetch_add(1, std::memory_order_relaxed);
-}
-
-void Assembly::decStrong(const void*) const
-{
-    if (mCount.fetch_sub(1, std::memory_order_acq_rel) == 1) {
-        delete this;
-    }
-}
-
-ssize_t Assembly::size() const
-{
-    if (!mBase) return NO_MEMORY;
-    return mSize;
-}
-
-uint32_t* Assembly::base() const
-{
-    return mBase;
-}
-
-ssize_t Assembly::resize(size_t newSize)
-{
-    mBase = (uint32_t*)mspace_realloc(getMspace(), mBase, newSize);
-    LOG_ALWAYS_FATAL_IF(mBase == NULL,
-                        "Failed to resize Assembly to %zd in code cache "
-                        "of size %zd", newSize, kMaxCodeCacheCapacity);
-    mSize = newSize;
-    return size();
-}
-
-// ----------------------------------------------------------------------------
-
-CodeCache::CodeCache(size_t size)
-    : mCacheSize(size), mCacheInUse(0)
-{
-    pthread_mutex_init(&mLock, 0);
-}
-
-CodeCache::~CodeCache()
-{
-    pthread_mutex_destroy(&mLock);
-}
-
-sp<Assembly> CodeCache::lookup(const AssemblyKeyBase& keyBase) const
-{
-    pthread_mutex_lock(&mLock);
-    sp<Assembly> r;
-    ssize_t index = mCacheData.indexOfKey(key_t(keyBase));
-    if (index >= 0) {
-        const cache_entry_t& e = mCacheData.valueAt(index);
-        e.when = mWhen++;
-        r = e.entry;
-    }
-    pthread_mutex_unlock(&mLock);
-    return r;
-}
-
-int CodeCache::cache(  const AssemblyKeyBase& keyBase,
-                            const sp<Assembly>& assembly)
-{
-    pthread_mutex_lock(&mLock);
-
-    const ssize_t assemblySize = assembly->size();
-    while (mCacheInUse + assemblySize > mCacheSize) {
-        // evict the LRU
-        size_t lru = 0;
-        size_t count = mCacheData.size();
-        for (size_t i=0 ; i<count ; i++) {
-            const cache_entry_t& e = mCacheData.valueAt(i);
-            if (e.when < mCacheData.valueAt(lru).when) {
-                lru = i;
-            }
-        }
-        const cache_entry_t& e = mCacheData.valueAt(lru);
-        mCacheInUse -= e.entry->size();
-        mCacheData.removeItemsAt(lru);
-    }
-
-    ssize_t err = mCacheData.add(key_t(keyBase), cache_entry_t(assembly, mWhen));
-    if (err >= 0) {
-        mCacheInUse += assemblySize;
-        mWhen++;
-        // synchronize caches...
-        char* base = reinterpret_cast<char*>(assembly->base());
-        char* curr = reinterpret_cast<char*>(base + assembly->size());
-        __builtin___clear_cache(base, curr);
-    }
-
-    pthread_mutex_unlock(&mLock);
-    return err;
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
diff --git a/libpixelflinger/codeflinger/CodeCache.h b/libpixelflinger/codeflinger/CodeCache.h
deleted file mode 100644
index 9326453..0000000
--- a/libpixelflinger/codeflinger/CodeCache.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/* libs/pixelflinger/codeflinger/CodeCache.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_CODECACHE_H
-#define ANDROID_CODECACHE_H
-
-#include <atomic>
-#include <stdint.h>
-#include <pthread.h>
-#include <sys/types.h>
-
-#include "utils/KeyedVector.h"
-#include "tinyutils/smartpointer.h"
-
-namespace android {
-
-using namespace tinyutils;
-
-// ----------------------------------------------------------------------------
-
-class AssemblyKeyBase {
-public:
-    virtual ~AssemblyKeyBase() { }
-    virtual int compare_type(const AssemblyKeyBase& key) const = 0;
-};
-
-template  <typename T>
-class AssemblyKey : public AssemblyKeyBase
-{
-public:
-    explicit AssemblyKey(const T& rhs) : mKey(rhs) { }
-    virtual int compare_type(const AssemblyKeyBase& key) const {
-        const T& rhs = static_cast<const AssemblyKey&>(key).mKey;
-        return android::compare_type(mKey, rhs);
-    }
-private:
-    T mKey;
-};
-
-// ----------------------------------------------------------------------------
-
-class Assembly
-{
-public:
-    explicit    Assembly(size_t size);
-    virtual     ~Assembly();
-
-    ssize_t     size() const;
-    uint32_t*   base() const;
-    ssize_t     resize(size_t size);
-
-    // protocol for sp<>
-            void    incStrong(const void* id) const;
-            void    decStrong(const void* id) const;
-    typedef void    weakref_type;
-
-private:
-    mutable std::atomic<int32_t>     mCount;
-            uint32_t*   mBase;
-            size_t      mSize;
-};
-
-// ----------------------------------------------------------------------------
-
-class CodeCache
-{
-public:
-// pretty simple cache API...
-    explicit            CodeCache(size_t size);
-                        ~CodeCache();
-
-    sp<Assembly>        lookup(const AssemblyKeyBase& key) const;
-
-    int                 cache(const AssemblyKeyBase& key,
-                              const sp<Assembly>& assembly);
-
-private:
-    // nothing to see here...
-    struct cache_entry_t {
-        inline cache_entry_t() { }
-        inline cache_entry_t(const sp<Assembly>& a, int64_t w)
-                : entry(a), when(w) { }
-        sp<Assembly>            entry;
-        mutable int64_t         when;
-    };
-
-    class key_t {
-        friend int compare_type(
-            const key_value_pair_t<key_t, cache_entry_t>&,
-            const key_value_pair_t<key_t, cache_entry_t>&);
-        const AssemblyKeyBase* mKey;
-    public:
-        key_t() { };
-        explicit key_t(const AssemblyKeyBase& k) : mKey(&k)  { }
-    };
-
-    mutable pthread_mutex_t             mLock;
-    mutable int64_t                     mWhen;
-    size_t                              mCacheSize;
-    size_t                              mCacheInUse;
-    KeyedVector<key_t, cache_entry_t>   mCacheData;
-
-    friend int compare_type(
-        const key_value_pair_t<key_t, cache_entry_t>&,
-        const key_value_pair_t<key_t, cache_entry_t>&);
-};
-
-// KeyedVector uses compare_type(), which is more efficient, than
-// just using operator < ()
-inline int compare_type(
-    const key_value_pair_t<CodeCache::key_t, CodeCache::cache_entry_t>& lhs,
-    const key_value_pair_t<CodeCache::key_t, CodeCache::cache_entry_t>& rhs)
-{
-    return lhs.key.mKey->compare_type(*(rhs.key.mKey));
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
-
-#endif //ANDROID_CODECACHE_H
diff --git a/libpixelflinger/codeflinger/GGLAssembler.cpp b/libpixelflinger/codeflinger/GGLAssembler.cpp
deleted file mode 100644
index 04e285d..0000000
--- a/libpixelflinger/codeflinger/GGLAssembler.cpp
+++ /dev/null
@@ -1,1195 +0,0 @@
-/* libs/pixelflinger/codeflinger/GGLAssembler.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "GGLAssembler"
-
-#include <assert.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-
-#include <log/log.h>
-
-#include "GGLAssembler.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-GGLAssembler::GGLAssembler(ARMAssemblerInterface* target)
-    : ARMAssemblerProxy(target),
-      RegisterAllocator(ARMAssemblerProxy::getCodegenArch()), mOptLevel(7)
-{
-}
-
-GGLAssembler::~GGLAssembler()
-{
-}
-
-void GGLAssembler::prolog()
-{
-    ARMAssemblerProxy::prolog();
-}
-
-void GGLAssembler::epilog(uint32_t touched)
-{
-    ARMAssemblerProxy::epilog(touched);
-}
-
-void GGLAssembler::reset(int opt_level)
-{
-    ARMAssemblerProxy::reset();
-    RegisterAllocator::reset();
-    mOptLevel = opt_level;
-}
-
-// ---------------------------------------------------------------------------
-
-int GGLAssembler::scanline(const needs_t& needs, context_t const* c)
-{
-    int err = 0;
-    int opt_level = mOptLevel;
-    while (opt_level >= 0) {
-        reset(opt_level);
-        err = scanline_core(needs, c);
-        if (err == 0)
-            break;
-        opt_level--;
-    }
-    
-    // XXX: in theory, pcForLabel is not valid before generate()
-    uint32_t* fragment_start_pc = pcForLabel("fragment_loop");
-    uint32_t* fragment_end_pc = pcForLabel("epilog");
-    const int per_fragment_ops = int(fragment_end_pc - fragment_start_pc);
-    
-    // build a name for our pipeline
-    char name[64];    
-    sprintf(name,
-            "scanline__%08X:%08X_%08X_%08X [%3d ipp]",
-            needs.p, needs.n, needs.t[0], needs.t[1], per_fragment_ops);
-
-    if (err) {
-        ALOGE("Error while generating ""%s""\n", name);
-        disassemble(name);
-        return -1;
-    }
-
-    return generate(name);
-}
-
-int GGLAssembler::scanline_core(const needs_t& needs, context_t const* c)
-{
-    mBlendFactorCached = 0;
-    mBlending = 0;
-    mMasking = 0;
-    mAA        = GGL_READ_NEEDS(P_AA, needs.p);
-    mDithering = GGL_READ_NEEDS(P_DITHER, needs.p);
-    mAlphaTest = GGL_READ_NEEDS(P_ALPHA_TEST, needs.p) + GGL_NEVER;
-    mDepthTest = GGL_READ_NEEDS(P_DEPTH_TEST, needs.p) + GGL_NEVER;
-    mFog       = GGL_READ_NEEDS(P_FOG, needs.p) != 0;
-    mSmooth    = GGL_READ_NEEDS(SHADE, needs.n) != 0;
-    mBuilderContext.needs = needs;
-    mBuilderContext.c = c;
-    mBuilderContext.Rctx = reserveReg(R0); // context always in R0
-    mCbFormat = c->formats[ GGL_READ_NEEDS(CB_FORMAT, needs.n) ];
-
-    // ------------------------------------------------------------------------
-
-    decodeLogicOpNeeds(needs);
-
-    decodeTMUNeeds(needs, c);
-
-    mBlendSrc  = ggl_needs_to_blendfactor(GGL_READ_NEEDS(BLEND_SRC, needs.n));
-    mBlendDst  = ggl_needs_to_blendfactor(GGL_READ_NEEDS(BLEND_DST, needs.n));
-    mBlendSrcA = ggl_needs_to_blendfactor(GGL_READ_NEEDS(BLEND_SRCA, needs.n));
-    mBlendDstA = ggl_needs_to_blendfactor(GGL_READ_NEEDS(BLEND_DSTA, needs.n));
-
-    if (!mCbFormat.c[GGLFormat::ALPHA].h) {
-        if ((mBlendSrc == GGL_ONE_MINUS_DST_ALPHA) ||
-            (mBlendSrc == GGL_DST_ALPHA)) {
-            mBlendSrc = GGL_ONE;
-        }
-        if ((mBlendSrcA == GGL_ONE_MINUS_DST_ALPHA) ||
-            (mBlendSrcA == GGL_DST_ALPHA)) {
-            mBlendSrcA = GGL_ONE;
-        }
-        if ((mBlendDst == GGL_ONE_MINUS_DST_ALPHA) ||
-            (mBlendDst == GGL_DST_ALPHA)) {
-            mBlendDst = GGL_ONE;
-        }
-        if ((mBlendDstA == GGL_ONE_MINUS_DST_ALPHA) ||
-            (mBlendDstA == GGL_DST_ALPHA)) {
-            mBlendDstA = GGL_ONE;
-        }
-    }
-
-    // if we need the framebuffer, read it now
-    const int blending =    blending_codes(mBlendSrc, mBlendDst) |
-                            blending_codes(mBlendSrcA, mBlendDstA);
-
-    // XXX: handle special cases, destination not modified...
-    if ((mBlendSrc==GGL_ZERO) && (mBlendSrcA==GGL_ZERO) &&
-        (mBlendDst==GGL_ONE) && (mBlendDstA==GGL_ONE)) {
-        // Destination unmodified (beware of logic ops)
-    } else if ((mBlendSrc==GGL_ZERO) && (mBlendSrcA==GGL_ZERO) &&
-        (mBlendDst==GGL_ZERO) && (mBlendDstA==GGL_ZERO)) {
-        // Destination is zero (beware of logic ops)
-    }
-    
-    int fbComponents = 0;
-    const int masking = GGL_READ_NEEDS(MASK_ARGB, needs.n);
-    for (int i=0 ; i<4 ; i++) {
-        const int mask = 1<<i;
-        component_info_t& info = mInfo[i];
-        int fs = i==GGLFormat::ALPHA ? mBlendSrcA : mBlendSrc;
-        int fd = i==GGLFormat::ALPHA ? mBlendDstA : mBlendDst;
-        if (fs==GGL_SRC_ALPHA_SATURATE && i==GGLFormat::ALPHA)
-            fs = GGL_ONE;
-        info.masked =   !!(masking & mask);
-        info.inDest =   !info.masked && mCbFormat.c[i].h && 
-                        ((mLogicOp & LOGIC_OP_SRC) || (!mLogicOp));
-        if (mCbFormat.components >= GGL_LUMINANCE &&
-                (i==GGLFormat::GREEN || i==GGLFormat::BLUE)) {
-            info.inDest = false;
-        }
-        info.needed =   (i==GGLFormat::ALPHA) && 
-                        (isAlphaSourceNeeded() || mAlphaTest != GGL_ALWAYS);
-        info.replaced = !!(mTextureMachine.replaced & mask);
-        info.iterated = (!info.replaced && (info.inDest || info.needed)); 
-        info.smooth =   mSmooth && info.iterated;
-        info.fog =      mFog && info.inDest && (i != GGLFormat::ALPHA);
-        info.blend =    (fs != int(GGL_ONE)) || (fd > int(GGL_ZERO));
-
-        mBlending |= (info.blend ? mask : 0);
-        mMasking |= (mCbFormat.c[i].h && info.masked) ? mask : 0;
-        fbComponents |= mCbFormat.c[i].h ? mask : 0;
-    }
-
-    mAllMasked = (mMasking == fbComponents);
-    if (mAllMasked) {
-        mDithering = 0;
-    }
-    
-    fragment_parts_t parts;
-
-    // ------------------------------------------------------------------------
-    prolog();
-    // ------------------------------------------------------------------------
-
-    build_scanline_prolog(parts, needs);
-
-    if (registerFile().status())
-        return registerFile().status();
-
-    // ------------------------------------------------------------------------
-    label("fragment_loop");
-    // ------------------------------------------------------------------------
-    {
-        Scratch regs(registerFile());
-
-        if (mDithering) {
-            // update the dither index.
-            MOV(AL, 0, parts.count.reg,
-                    reg_imm(parts.count.reg, ROR, GGL_DITHER_ORDER_SHIFT));
-            ADD(AL, 0, parts.count.reg, parts.count.reg,
-                    imm( 1 << (32 - GGL_DITHER_ORDER_SHIFT)));
-            MOV(AL, 0, parts.count.reg,
-                    reg_imm(parts.count.reg, ROR, 32 - GGL_DITHER_ORDER_SHIFT));
-        }
-
-        // XXX: could we do an early alpha-test here in some cases?
-        // It would probaly be used only with smooth-alpha and no texture
-        // (or no alpha component in the texture).
-
-        // Early z-test
-        if (mAlphaTest==GGL_ALWAYS) {
-            build_depth_test(parts, Z_TEST|Z_WRITE);
-        } else {
-            // we cannot do the z-write here, because
-            // it might be killed by the alpha-test later
-            build_depth_test(parts, Z_TEST);
-        }
-
-        { // texture coordinates
-            Scratch scratches(registerFile());
-
-            // texel generation
-            build_textures(parts, regs);
-            if (registerFile().status())
-                return registerFile().status();
-        }
-
-        if ((blending & (FACTOR_DST|BLEND_DST)) || 
-                (mMasking && !mAllMasked) ||
-                (mLogicOp & LOGIC_OP_DST)) 
-        {
-            // blending / logic_op / masking need the framebuffer
-            mDstPixel.setTo(regs.obtain(), &mCbFormat);
-
-            // load the framebuffer pixel
-            comment("fetch color-buffer");
-            load(parts.cbPtr, mDstPixel);
-        }
-
-        if (registerFile().status())
-            return registerFile().status();
-
-        pixel_t pixel;
-        int directTex = mTextureMachine.directTexture;
-        if (directTex | parts.packed) {
-            // note: we can't have both here
-            // iterated color or direct texture
-            pixel = directTex ? parts.texel[directTex-1] : parts.iterated;
-            pixel.flags &= ~CORRUPTIBLE;
-        } else {
-            if (mDithering) {
-                const int ctxtReg = mBuilderContext.Rctx;
-                const int mask = GGL_DITHER_SIZE-1;
-                parts.dither = reg_t(regs.obtain());
-                AND(AL, 0, parts.dither.reg, parts.count.reg, imm(mask));
-                ADDR_ADD(AL, 0, parts.dither.reg, ctxtReg, parts.dither.reg);
-                LDRB(AL, parts.dither.reg, parts.dither.reg,
-                        immed12_pre(GGL_OFFSETOF(ditherMatrix)));
-            }
-        
-            // allocate a register for the resulting pixel
-            pixel.setTo(regs.obtain(), &mCbFormat, FIRST);
-
-            build_component(pixel, parts, GGLFormat::ALPHA,    regs);
-
-            if (mAlphaTest!=GGL_ALWAYS) {
-                // only handle the z-write part here. We know z-test
-                // was successful, as well as alpha-test.
-                build_depth_test(parts, Z_WRITE);
-            }
-
-            build_component(pixel, parts, GGLFormat::RED,      regs);
-            build_component(pixel, parts, GGLFormat::GREEN,    regs);
-            build_component(pixel, parts, GGLFormat::BLUE,     regs);
-
-            pixel.flags |= CORRUPTIBLE;
-        }
-
-        if (registerFile().status())
-            return registerFile().status();
-        
-        if (pixel.reg == -1) {
-            // be defensive here. if we're here it's probably
-            // that this whole fragment is a no-op.
-            pixel = mDstPixel;
-        }
-        
-        if (!mAllMasked) {
-            // logic operation
-            build_logic_op(pixel, regs);
-    
-            // masking
-            build_masking(pixel, regs); 
-    
-            comment("store");
-            store(parts.cbPtr, pixel, WRITE_BACK);
-        }
-    }
-
-    if (registerFile().status())
-        return registerFile().status();
-
-    // update the iterated color...
-    if (parts.reload != 3) {
-        build_smooth_shade(parts);
-    }
-
-    // update iterated z
-    build_iterate_z(parts);
-
-    // update iterated fog
-    build_iterate_f(parts);
-
-    SUB(AL, S, parts.count.reg, parts.count.reg, imm(1<<16));
-    B(PL, "fragment_loop");
-    label("epilog");
-    epilog(registerFile().touched());
-
-    if ((mAlphaTest!=GGL_ALWAYS) || (mDepthTest!=GGL_ALWAYS)) {
-        if (mDepthTest!=GGL_ALWAYS) {
-            label("discard_before_textures");
-            build_iterate_texture_coordinates(parts);
-        }
-        label("discard_after_textures");
-        build_smooth_shade(parts);
-        build_iterate_z(parts);
-        build_iterate_f(parts);
-        if (!mAllMasked) {
-            ADDR_ADD(AL, 0, parts.cbPtr.reg, parts.cbPtr.reg, imm(parts.cbPtr.size>>3));
-        }
-        SUB(AL, S, parts.count.reg, parts.count.reg, imm(1<<16));
-        B(PL, "fragment_loop");
-        epilog(registerFile().touched());
-    }
-
-    return registerFile().status();
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_scanline_prolog(
-    fragment_parts_t& parts, const needs_t& needs)
-{
-    Scratch scratches(registerFile());
-
-    // compute count
-    comment("compute ct (# of pixels to process)");
-    parts.count.setTo(obtainReg());
-    int Rx = scratches.obtain();    
-    int Ry = scratches.obtain();
-    CONTEXT_LOAD(Rx, iterators.xl);
-    CONTEXT_LOAD(parts.count.reg, iterators.xr);
-    CONTEXT_LOAD(Ry, iterators.y);
-
-    // parts.count = iterators.xr - Rx
-    SUB(AL, 0, parts.count.reg, parts.count.reg, Rx);
-    SUB(AL, 0, parts.count.reg, parts.count.reg, imm(1));
-
-    if (mDithering) {
-        // parts.count.reg = 0xNNNNXXDD
-        // NNNN = count-1
-        // DD   = dither offset
-        // XX   = 0xxxxxxx (x = garbage)
-        Scratch scratches(registerFile());
-        int tx = scratches.obtain();
-        int ty = scratches.obtain();
-        AND(AL, 0, tx, Rx, imm(GGL_DITHER_MASK));
-        AND(AL, 0, ty, Ry, imm(GGL_DITHER_MASK));
-        ADD(AL, 0, tx, tx, reg_imm(ty, LSL, GGL_DITHER_ORDER_SHIFT));
-        ORR(AL, 0, parts.count.reg, tx, reg_imm(parts.count.reg, LSL, 16));
-    } else {
-        // parts.count.reg = 0xNNNN0000
-        // NNNN = count-1
-        MOV(AL, 0, parts.count.reg, reg_imm(parts.count.reg, LSL, 16));
-    }
-
-    if (!mAllMasked) {
-        // compute dst ptr
-        comment("compute color-buffer pointer");
-        const int cb_bits = mCbFormat.size*8;
-        int Rs = scratches.obtain();
-        parts.cbPtr.setTo(obtainReg(), cb_bits);
-        CONTEXT_LOAD(Rs, state.buffers.color.stride);
-        CONTEXT_ADDR_LOAD(parts.cbPtr.reg, state.buffers.color.data);
-        SMLABB(AL, Rs, Ry, Rs, Rx);  // Rs = Rx + Ry*Rs
-        base_offset(parts.cbPtr, parts.cbPtr, Rs);
-        scratches.recycle(Rs);
-    }
-    
-    // init fog
-    const int need_fog = GGL_READ_NEEDS(P_FOG, needs.p);
-    if (need_fog) {
-        comment("compute initial fog coordinate");
-        Scratch scratches(registerFile());
-        int dfdx = scratches.obtain();
-        int ydfdy = scratches.obtain();
-        int f = ydfdy;
-        CONTEXT_LOAD(dfdx,  generated_vars.dfdx);
-        CONTEXT_LOAD(ydfdy, iterators.ydfdy);
-        MLA(AL, 0, f, Rx, dfdx, ydfdy);
-        CONTEXT_STORE(f, generated_vars.f);
-    }
-
-    // init Z coordinate
-    if ((mDepthTest != GGL_ALWAYS) || GGL_READ_NEEDS(P_MASK_Z, needs.p)) {
-        parts.z = reg_t(obtainReg());
-        comment("compute initial Z coordinate");
-        Scratch scratches(registerFile());
-        int dzdx = scratches.obtain();
-        int ydzdy = parts.z.reg;
-        CONTEXT_LOAD(dzdx,  generated_vars.dzdx);   // 1.31 fixed-point
-        CONTEXT_LOAD(ydzdy, iterators.ydzdy);       // 1.31 fixed-point
-        MLA(AL, 0, parts.z.reg, Rx, dzdx, ydzdy);
-
-        // we're going to index zbase of parts.count
-        // zbase = base + (xl-count + stride*y)*2
-        int Rs = dzdx;
-        int zbase = scratches.obtain();
-        CONTEXT_LOAD(Rs, state.buffers.depth.stride);
-        CONTEXT_ADDR_LOAD(zbase, state.buffers.depth.data);
-        SMLABB(AL, Rs, Ry, Rs, Rx);
-        ADD(AL, 0, Rs, Rs, reg_imm(parts.count.reg, LSR, 16));
-        ADDR_ADD(AL, 0, zbase, zbase, reg_imm(Rs, LSL, 1));
-        CONTEXT_ADDR_STORE(zbase, generated_vars.zbase);
-    }
-
-    // init texture coordinates
-    init_textures(parts.coords, reg_t(Rx), reg_t(Ry));
-    scratches.recycle(Ry);
-
-    // iterated color
-    init_iterated_color(parts, reg_t(Rx));
-
-    // init coverage factor application (anti-aliasing)
-    if (mAA) {
-        parts.covPtr.setTo(obtainReg(), 16);
-        CONTEXT_ADDR_LOAD(parts.covPtr.reg, state.buffers.coverage);
-        ADDR_ADD(AL, 0, parts.covPtr.reg, parts.covPtr.reg, reg_imm(Rx, LSL, 1));
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_component( pixel_t& pixel,
-                                    const fragment_parts_t& parts,
-                                    int component,
-                                    Scratch& regs)
-{
-    static char const * comments[] = {"alpha", "red", "green", "blue"};
-    comment(comments[component]);
-
-    // local register file
-    Scratch scratches(registerFile());
-    const int dst_component_size = pixel.component_size(component);
-
-    component_t temp(-1);
-    build_incoming_component( temp, dst_component_size,
-            parts, component, scratches, regs);
-
-    if (mInfo[component].inDest) {
-
-        // blending...
-        build_blending( temp, mDstPixel, component, scratches );
-
-        // downshift component and rebuild pixel...
-        downshift(pixel, component, temp, parts.dither);
-    }
-}
-
-void GGLAssembler::build_incoming_component(
-                                    component_t& temp,
-                                    int dst_size,
-                                    const fragment_parts_t& parts,
-                                    int component,
-                                    Scratch& scratches,
-                                    Scratch& global_regs)
-{
-    const uint32_t component_mask = 1<<component;
-
-    // Figure out what we need for the blending stage...
-    int fs = component==GGLFormat::ALPHA ? mBlendSrcA : mBlendSrc;
-    int fd = component==GGLFormat::ALPHA ? mBlendDstA : mBlendDst;
-    if (fs==GGL_SRC_ALPHA_SATURATE && component==GGLFormat::ALPHA) {
-        fs = GGL_ONE;
-    }
-
-    // Figure out what we need to extract and for what reason
-    const int blending = blending_codes(fs, fd);
-
-    // Are we actually going to blend?
-    const int need_blending = (fs != int(GGL_ONE)) || (fd > int(GGL_ZERO));
-    
-    // expand the source if the destination has more bits
-    int need_expander = false;
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT-1 ; i++) {
-        texture_unit_t& tmu = mTextureMachine.tmu[i];
-        if ((tmu.format_idx) &&
-            (parts.texel[i].component_size(component) < dst_size)) {
-            need_expander = true;
-        }
-    }
-
-    // do we need to extract this component?
-    const bool multiTexture = mTextureMachine.activeUnits > 1;
-    const int blend_needs_alpha_source = (component==GGLFormat::ALPHA) &&
-                                        (isAlphaSourceNeeded());
-    int need_extract = mInfo[component].needed;
-    if (mInfo[component].inDest)
-    {
-        need_extract |= ((need_blending ?
-                (blending & (BLEND_SRC|FACTOR_SRC)) : need_expander));
-        need_extract |= (mTextureMachine.mask != mTextureMachine.replaced);
-        need_extract |= mInfo[component].smooth;
-        need_extract |= mInfo[component].fog;
-        need_extract |= mDithering;
-        need_extract |= multiTexture;
-    }
-
-    if (need_extract) {
-        Scratch& regs = blend_needs_alpha_source ? global_regs : scratches;
-        component_t fragment;
-
-        // iterated color
-        build_iterated_color(fragment, parts, component, regs);
-
-        // texture environement (decal, modulate, replace)
-        build_texture_environment(fragment, parts, component, regs);
-
-        // expand the source if the destination has more bits
-        if (need_expander && (fragment.size() < dst_size)) {
-            // we're here only if we fetched a texel
-            // (so we know for sure fragment is CORRUPTIBLE)
-            expand(fragment, fragment, dst_size);
-        }
-
-        // We have a few specific things to do for the alpha-channel
-        if ((component==GGLFormat::ALPHA) &&
-            (mInfo[component].needed || fragment.size()<dst_size))
-        {
-            // convert to integer_t first and make sure
-            // we don't corrupt a needed register
-            if (fragment.l) {
-                component_t incoming(fragment);
-                modify(fragment, regs);
-                MOV(AL, 0, fragment.reg, reg_imm(incoming.reg, LSR, incoming.l));
-                fragment.h -= fragment.l;
-                fragment.l = 0;
-            }
-
-            // coverage factor application
-            build_coverage_application(fragment, parts, regs);
-
-            // alpha-test
-            build_alpha_test(fragment, parts);
-
-            if (blend_needs_alpha_source) {
-                // We keep only 8 bits for the blending stage
-                const int shift = fragment.h <= 8 ? 0 : fragment.h-8;
-                if (fragment.flags & CORRUPTIBLE) {
-                    fragment.flags &= ~CORRUPTIBLE;
-                    mAlphaSource.setTo(fragment.reg,
-                            fragment.size(), fragment.flags);
-                    if (shift) {
-                        MOV(AL, 0, mAlphaSource.reg,
-                            reg_imm(mAlphaSource.reg, LSR, shift));
-                    }
-                } else {
-                    // XXX: it would better to do this in build_blend_factor()
-                    // so we can avoid the extra MOV below.
-                    mAlphaSource.setTo(regs.obtain(),
-                            fragment.size(), CORRUPTIBLE);
-                    if (shift) {
-                        MOV(AL, 0, mAlphaSource.reg,
-                            reg_imm(fragment.reg, LSR, shift));
-                    } else {
-                        MOV(AL, 0, mAlphaSource.reg, fragment.reg);
-                    }
-                }
-                mAlphaSource.s -= shift;
-            }
-        }
-
-        // fog...
-        build_fog( fragment, component, regs );
-
-        temp = fragment;
-    } else {
-        if (mInfo[component].inDest) {
-            // extraction not needed and replace
-            // we just select the right component
-            if ((mTextureMachine.replaced & component_mask) == 0) {
-                // component wasn't replaced, so use it!
-                temp = component_t(parts.iterated, component);
-            }
-            for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-                const texture_unit_t& tmu = mTextureMachine.tmu[i];
-                if ((tmu.mask & component_mask) &&
-                    ((tmu.replaced & component_mask) == 0)) {
-                    temp = component_t(parts.texel[i], component);
-                }
-            }
-        }
-    }
-}
-
-bool GGLAssembler::isAlphaSourceNeeded() const
-{
-    // XXX: also needed for alpha-test
-    const int bs = mBlendSrc;
-    const int bd = mBlendDst;
-    return  bs==GGL_SRC_ALPHA_SATURATE ||
-            bs==GGL_SRC_ALPHA || bs==GGL_ONE_MINUS_SRC_ALPHA ||
-            bd==GGL_SRC_ALPHA || bd==GGL_ONE_MINUS_SRC_ALPHA ; 
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_smooth_shade(const fragment_parts_t& parts)
-{
-    if (mSmooth && !parts.iterated_packed) {
-        // update the iterated color in a pipelined way...
-        comment("update iterated color");
-        Scratch scratches(registerFile());
-
-        const int reload = parts.reload;
-        for (int i=0 ; i<4 ; i++) {
-            if (!mInfo[i].iterated) 
-                continue;
-                
-            int c = parts.argb[i].reg;
-            int dx = parts.argb_dx[i].reg;
-            
-            if (reload & 1) {
-                c = scratches.obtain();
-                CONTEXT_LOAD(c, generated_vars.argb[i].c);
-            }
-            if (reload & 2) {
-                dx = scratches.obtain();
-                CONTEXT_LOAD(dx, generated_vars.argb[i].dx);
-            }
-            
-            if (mSmooth) {
-                ADD(AL, 0, c, c, dx);
-            }
-            
-            if (reload & 1) {
-                CONTEXT_STORE(c, generated_vars.argb[i].c);
-                scratches.recycle(c);
-            }
-            if (reload & 2) {
-                scratches.recycle(dx);
-            }
-        }
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_coverage_application(component_t& fragment,
-        const fragment_parts_t& parts, Scratch& regs)
-{
-    // here fragment.l is guarenteed to be 0
-    if (mAA) {
-        // coverages are 1.15 fixed-point numbers
-        comment("coverage application");
-
-        component_t incoming(fragment);
-        modify(fragment, regs);
-
-        Scratch scratches(registerFile());
-        int cf = scratches.obtain();
-        LDRH(AL, cf, parts.covPtr.reg, immed8_post(2));
-        if (fragment.h > 31) {
-            fragment.h--;
-            SMULWB(AL, fragment.reg, incoming.reg, cf);
-        } else {
-            MOV(AL, 0, fragment.reg, reg_imm(incoming.reg, LSL, 1));
-            SMULWB(AL, fragment.reg, fragment.reg, cf);
-        }
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_alpha_test(component_t& fragment,
-                                    const fragment_parts_t& /*parts*/)
-{
-    if (mAlphaTest != GGL_ALWAYS) {
-        comment("Alpha Test");
-        Scratch scratches(registerFile());
-        int ref = scratches.obtain();
-        const int shift = GGL_COLOR_BITS-fragment.size();
-        CONTEXT_LOAD(ref, state.alpha_test.ref);
-        if (shift) CMP(AL, fragment.reg, reg_imm(ref, LSR, shift));
-        else       CMP(AL, fragment.reg, ref);
-        int cc = NV;
-        switch (mAlphaTest) {
-        case GGL_NEVER:     cc = NV;    break;
-        case GGL_LESS:      cc = LT;    break;
-        case GGL_EQUAL:     cc = EQ;    break;
-        case GGL_LEQUAL:    cc = LS;    break;
-        case GGL_GREATER:   cc = HI;    break;
-        case GGL_NOTEQUAL:  cc = NE;    break;
-        case GGL_GEQUAL:    cc = HS;    break;
-        }
-        B(cc^1, "discard_after_textures");
-    }
-}
-
-// ---------------------------------------------------------------------------
-            
-void GGLAssembler::build_depth_test(
-        const fragment_parts_t& parts, uint32_t mask)
-{
-    mask &= Z_TEST|Z_WRITE;
-    const needs_t& needs = mBuilderContext.needs;
-    const int zmask = GGL_READ_NEEDS(P_MASK_Z, needs.p);
-    Scratch scratches(registerFile());
-
-    if (mDepthTest != GGL_ALWAYS || zmask) {
-        int cc=AL, ic=AL;
-        switch (mDepthTest) {
-        case GGL_LESS:      ic = HI;    break;
-        case GGL_EQUAL:     ic = EQ;    break;
-        case GGL_LEQUAL:    ic = HS;    break;
-        case GGL_GREATER:   ic = LT;    break;
-        case GGL_NOTEQUAL:  ic = NE;    break;
-        case GGL_GEQUAL:    ic = LS;    break;
-        case GGL_NEVER:
-            // this never happens, because it's taken care of when 
-            // computing the needs. but we keep it for completness.
-            comment("Depth Test (NEVER)");
-            B(AL, "discard_before_textures");
-            return;
-        case GGL_ALWAYS:
-            // we're here because zmask is enabled
-            mask &= ~Z_TEST;    // test always passes.
-            break;
-        }
-        
-        // inverse the condition
-        cc = ic^1;
-        
-        if ((mask & Z_WRITE) && !zmask) {
-            mask &= ~Z_WRITE;
-        }
-        
-        if (!mask)
-            return;
-
-        comment("Depth Test");
-
-        int zbase = scratches.obtain();
-        int depth = scratches.obtain();
-        int z = parts.z.reg;
-        
-        CONTEXT_ADDR_LOAD(zbase, generated_vars.zbase);  // stall
-        ADDR_SUB(AL, 0, zbase, zbase, reg_imm(parts.count.reg, LSR, 15));
-            // above does zbase = zbase + ((count >> 16) << 1)
-
-        if (mask & Z_TEST) {
-            LDRH(AL, depth, zbase);  // stall
-            CMP(AL, depth, reg_imm(z, LSR, 16));
-            B(cc, "discard_before_textures");
-        }
-        if (mask & Z_WRITE) {
-            if (mask == Z_WRITE) {
-                // only z-write asked, cc is meaningless
-                ic = AL;
-            }
-            MOV(AL, 0, depth, reg_imm(z, LSR, 16));
-            STRH(ic, depth, zbase);
-        }
-    }
-}
-
-void GGLAssembler::build_iterate_z(const fragment_parts_t& parts)
-{
-    const needs_t& needs = mBuilderContext.needs;
-    if ((mDepthTest != GGL_ALWAYS) || GGL_READ_NEEDS(P_MASK_Z, needs.p)) {
-        Scratch scratches(registerFile());
-        int dzdx = scratches.obtain();
-        CONTEXT_LOAD(dzdx, generated_vars.dzdx);    // stall
-        ADD(AL, 0, parts.z.reg, parts.z.reg, dzdx); 
-    }
-}
-
-void GGLAssembler::build_iterate_f(const fragment_parts_t& /*parts*/)
-{
-    const needs_t& needs = mBuilderContext.needs;
-    if (GGL_READ_NEEDS(P_FOG, needs.p)) {
-        Scratch scratches(registerFile());
-        int dfdx = scratches.obtain();
-        int f = scratches.obtain();
-        CONTEXT_LOAD(f,     generated_vars.f);
-        CONTEXT_LOAD(dfdx,  generated_vars.dfdx);   // stall
-        ADD(AL, 0, f, f, dfdx);
-        CONTEXT_STORE(f,    generated_vars.f);
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_logic_op(pixel_t& pixel, Scratch& regs)
-{
-    const needs_t& needs = mBuilderContext.needs;
-    const int opcode = GGL_READ_NEEDS(LOGIC_OP, needs.n) | GGL_CLEAR;
-    if (opcode == GGL_COPY)
-        return;
-    
-    comment("logic operation");
-
-    pixel_t s(pixel);
-    if (!(pixel.flags & CORRUPTIBLE)) {
-        pixel.reg = regs.obtain();
-        pixel.flags |= CORRUPTIBLE;
-    }
-    
-    pixel_t d(mDstPixel);
-    switch(opcode) {
-    case GGL_CLEAR:         MOV(AL, 0, pixel.reg, imm(0));          break;
-    case GGL_AND:           AND(AL, 0, pixel.reg, s.reg, d.reg);    break;
-    case GGL_AND_REVERSE:   BIC(AL, 0, pixel.reg, s.reg, d.reg);    break;
-    case GGL_COPY:                                                  break;
-    case GGL_AND_INVERTED:  BIC(AL, 0, pixel.reg, d.reg, s.reg);    break;
-    case GGL_NOOP:          MOV(AL, 0, pixel.reg, d.reg);           break;
-    case GGL_XOR:           EOR(AL, 0, pixel.reg, s.reg, d.reg);    break;
-    case GGL_OR:            ORR(AL, 0, pixel.reg, s.reg, d.reg);    break;
-    case GGL_NOR:           ORR(AL, 0, pixel.reg, s.reg, d.reg);
-                            MVN(AL, 0, pixel.reg, pixel.reg);       break;
-    case GGL_EQUIV:         EOR(AL, 0, pixel.reg, s.reg, d.reg);
-                            MVN(AL, 0, pixel.reg, pixel.reg);       break;
-    case GGL_INVERT:        MVN(AL, 0, pixel.reg, d.reg);           break;
-    case GGL_OR_REVERSE:    // s | ~d == ~(~s & d)
-                            BIC(AL, 0, pixel.reg, d.reg, s.reg);
-                            MVN(AL, 0, pixel.reg, pixel.reg);       break;
-    case GGL_COPY_INVERTED: MVN(AL, 0, pixel.reg, s.reg);           break;
-    case GGL_OR_INVERTED:   // ~s | d == ~(s & ~d)
-                            BIC(AL, 0, pixel.reg, s.reg, d.reg);
-                            MVN(AL, 0, pixel.reg, pixel.reg);       break;
-    case GGL_NAND:          AND(AL, 0, pixel.reg, s.reg, d.reg);
-                            MVN(AL, 0, pixel.reg, pixel.reg);       break;
-    case GGL_SET:           MVN(AL, 0, pixel.reg, imm(0));          break;
-    };        
-}
-
-// ---------------------------------------------------------------------------
-
-static uint32_t find_bottom(uint32_t val)
-{
-    uint32_t i = 0;
-    while (!(val & (3<<i)))
-        i+= 2;
-    return i;
-}
-
-static void normalize(uint32_t& val, uint32_t& rot)
-{
-    rot = 0;
-    while (!(val&3)  || (val & 0xFC000000)) {
-        uint32_t newval;
-        newval = val >> 2;
-        newval |= (val&3) << 30;
-        val = newval;
-        rot += 2;
-        if (rot == 32) {
-            rot = 0;
-            break;
-        }
-    }
-}
-
-void GGLAssembler::build_and_immediate(int d, int s, uint32_t mask, int bits)
-{
-    uint32_t rot;
-    uint32_t size = ((bits>=32) ? 0 : (1LU << bits)) - 1;
-    mask &= size;
-
-    if (mask == size) {
-        if (d != s)
-            MOV( AL, 0, d, s);
-        return;
-    }
-    
-    if ((getCodegenArch() == CODEGEN_ARCH_MIPS) ||
-        (getCodegenArch() == CODEGEN_ARCH_MIPS64)) {
-        // MIPS can do 16-bit imm in 1 instr, 32-bit in 3 instr
-        // the below ' while (mask)' code is buggy on mips
-        // since mips returns true on isValidImmediate()
-        // then we get multiple AND instr (positive logic)
-        AND( AL, 0, d, s, imm(mask) );
-        return;
-    }
-    else if (getCodegenArch() == CODEGEN_ARCH_ARM64) {
-        AND( AL, 0, d, s, imm(mask) );
-        return;
-    }
-
-    int negative_logic = !isValidImmediate(mask);
-    if (negative_logic) {
-        mask = ~mask & size;
-    }
-    normalize(mask, rot);
-
-    if (mask) {
-        while (mask) {
-            uint32_t bitpos = find_bottom(mask);
-            int shift = rot + bitpos;
-            uint32_t m = mask & (0xff << bitpos);
-            mask &= ~m;
-            m >>= bitpos;
-            int32_t newMask =  (m<<shift) | (m>>(32-shift));
-            if (!negative_logic) {
-                AND( AL, 0, d, s, imm(newMask) );
-            } else {
-                BIC( AL, 0, d, s, imm(newMask) );
-            }
-            s = d;
-        }
-    } else {
-        MOV( AL, 0, d, imm(0));
-    }
-}		
-
-void GGLAssembler::build_masking(pixel_t& pixel, Scratch& regs)
-{
-    if (!mMasking || mAllMasked) {
-        return;
-    }
-
-    comment("color mask");
-
-    pixel_t fb(mDstPixel);
-    pixel_t s(pixel);
-    if (!(pixel.flags & CORRUPTIBLE)) {
-        pixel.reg = regs.obtain();
-        pixel.flags |= CORRUPTIBLE;
-    }
-
-    int mask = 0;
-    for (int i=0 ; i<4 ; i++) {
-        const int component_mask = 1<<i;
-        const int h = fb.format.c[i].h;
-        const int l = fb.format.c[i].l;
-        if (h && (!(mMasking & component_mask))) {
-            mask |= ((1<<(h-l))-1) << l;
-        }
-    }
-
-    // There is no need to clear the masked components of the source
-    // (unless we applied a logic op), because they're already zeroed 
-    // by construction (masked components are not computed)
-
-    if (mLogicOp) {
-        const needs_t& needs = mBuilderContext.needs;
-        const int opcode = GGL_READ_NEEDS(LOGIC_OP, needs.n) | GGL_CLEAR;
-        if (opcode != GGL_CLEAR) {
-            // clear masked component of source
-            build_and_immediate(pixel.reg, s.reg, mask, fb.size());
-            s = pixel;
-        }
-    }
-
-    // clear non masked components of destination
-    build_and_immediate(fb.reg, fb.reg, ~mask, fb.size()); 
-
-    // or back the channels that were masked
-    if (s.reg == fb.reg) {
-         // this is in fact a MOV
-        if (s.reg == pixel.reg) {
-            // ugh. this in in fact a nop
-        } else {
-            MOV(AL, 0, pixel.reg, fb.reg);
-        }
-    } else {
-        ORR(AL, 0, pixel.reg, s.reg, fb.reg);
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::base_offset(
-        const pointer_t& d, const pointer_t& b, const reg_t& o)
-{
-    switch (b.size) {
-    case 32:
-        ADDR_ADD(AL, 0, d.reg, b.reg, reg_imm(o.reg, LSL, 2));
-        break;
-    case 24:
-        if (d.reg == b.reg) {
-            ADDR_ADD(AL, 0, d.reg, b.reg, reg_imm(o.reg, LSL, 1));
-            ADDR_ADD(AL, 0, d.reg, d.reg, o.reg);
-        } else {
-            ADDR_ADD(AL, 0, d.reg, o.reg, reg_imm(o.reg, LSL, 1));
-            ADDR_ADD(AL, 0, d.reg, d.reg, b.reg);
-        }
-        break;
-    case 16:
-        ADDR_ADD(AL, 0, d.reg, b.reg, reg_imm(o.reg, LSL, 1));
-        break;
-    case 8:
-        ADDR_ADD(AL, 0, d.reg, b.reg, o.reg);
-        break;
-    }
-}
-
-// ----------------------------------------------------------------------------
-// cheezy register allocator...
-// ----------------------------------------------------------------------------
-
-// Modified to support MIPS processors, in a very simple way. We retain the
-// (Arm) limit of 16 total registers, but shift the mapping of those registers
-// from 0-15, to 2-17. Register 0 on Mips cannot be used as GP registers, and
-// register 1 has a traditional use as a temp).
-
-RegisterAllocator::RegisterAllocator(int arch) : mRegs(arch)
-{
-}
-
-void RegisterAllocator::reset()
-{
-    mRegs.reset();
-}
-
-int RegisterAllocator::reserveReg(int reg)
-{
-    return mRegs.reserve(reg);
-}
-
-int RegisterAllocator::obtainReg()
-{
-    return mRegs.obtain();
-}
-
-void RegisterAllocator::recycleReg(int reg)
-{
-    mRegs.recycle(reg);
-}
-
-RegisterAllocator::RegisterFile& RegisterAllocator::registerFile()
-{
-    return mRegs;
-}
-
-// ----------------------------------------------------------------------------
-
-RegisterAllocator::RegisterFile::RegisterFile(int codegen_arch)
-    : mRegs(0), mTouched(0), mStatus(0), mArch(codegen_arch), mRegisterOffset(0)
-{
-    if ((mArch == ARMAssemblerInterface::CODEGEN_ARCH_MIPS) ||
-        (mArch == ARMAssemblerInterface::CODEGEN_ARCH_MIPS64)) {
-        mRegisterOffset = 2;    // ARM has regs 0..15, MIPS offset to 2..17
-    }
-    reserve(ARMAssemblerInterface::SP);
-    reserve(ARMAssemblerInterface::PC);
-}
-
-RegisterAllocator::RegisterFile::RegisterFile(const RegisterFile& rhs, int codegen_arch)
-    : mRegs(rhs.mRegs), mTouched(rhs.mTouched), mArch(codegen_arch), mRegisterOffset(0)
-{
-    if ((mArch == ARMAssemblerInterface::CODEGEN_ARCH_MIPS) ||
-        (mArch == ARMAssemblerInterface::CODEGEN_ARCH_MIPS64)) {
-        mRegisterOffset = 2;    // ARM has regs 0..15, MIPS offset to 2..17
-    }
-}
-
-RegisterAllocator::RegisterFile::~RegisterFile()
-{
-}
-
-bool RegisterAllocator::RegisterFile::operator == (const RegisterFile& rhs) const
-{
-    return (mRegs == rhs.mRegs);
-}
-
-void RegisterAllocator::RegisterFile::reset()
-{
-    mRegs = mTouched = mStatus = 0;
-    reserve(ARMAssemblerInterface::SP);
-    reserve(ARMAssemblerInterface::PC);
-}
-
-// RegisterFile::reserve() take a register parameter in the
-// range 0-15 (Arm compatible), but on a Mips processor, will
-// return the actual allocated register in the range 2-17.
-int RegisterAllocator::RegisterFile::reserve(int reg)
-{
-    reg += mRegisterOffset;
-    LOG_ALWAYS_FATAL_IF(isUsed(reg),
-                        "reserving register %d, but already in use",
-                        reg);
-    mRegs |= (1<<reg);
-    mTouched |= mRegs;
-    return reg;
-}
-
-// This interface uses regMask in range 2-17 on MIPS, no translation.
-void RegisterAllocator::RegisterFile::reserveSeveral(uint32_t regMask)
-{
-    mRegs |= regMask;
-    mTouched |= regMask;
-}
-
-int RegisterAllocator::RegisterFile::isUsed(int reg) const
-{
-    LOG_ALWAYS_FATAL_IF(reg>=16+(int)mRegisterOffset, "invalid register %d", reg);
-    return mRegs & (1<<reg);
-}
-
-int RegisterAllocator::RegisterFile::obtain()
-{
-    const char priorityList[14] = {  0,  1, 2, 3, 
-                                    12, 14, 4, 5, 
-                                     6,  7, 8, 9,
-                                    10, 11 };
-    const int nbreg = sizeof(priorityList);
-    int i, r, reg;
-    for (i=0 ; i<nbreg ; i++) {
-        r = priorityList[i];
-        if (!isUsed(r + mRegisterOffset)) {
-            break;
-        }
-    }
-    // this is not an error anymore because, we'll try again with
-    // a lower optimization level.
-    //ALOGE_IF(i >= nbreg, "pixelflinger ran out of registers\n");
-    if (i >= nbreg) {
-        mStatus |= OUT_OF_REGISTERS;
-        // we return SP so we can more easily debug things
-        // the code will never be run anyway.
-        return ARMAssemblerInterface::SP; 
-    }
-    reg = reserve(r);  // Param in Arm range 0-15, returns range 2-17 on Mips.
-    return reg;
-}
-
-bool RegisterAllocator::RegisterFile::hasFreeRegs() const
-{
-    uint32_t regs = mRegs >> mRegisterOffset;   // MIPS fix.
-    return ((regs & 0xFFFF) == 0xFFFF) ? false : true;
-}
-
-int RegisterAllocator::RegisterFile::countFreeRegs() const
-{
-    uint32_t regs = mRegs >> mRegisterOffset;   // MIPS fix.
-    int f = ~regs & 0xFFFF;
-    // now count number of 1
-   f = (f & 0x5555) + ((f>>1) & 0x5555);
-   f = (f & 0x3333) + ((f>>2) & 0x3333);
-   f = (f & 0x0F0F) + ((f>>4) & 0x0F0F);
-   f = (f & 0x00FF) + ((f>>8) & 0x00FF);
-   return f;
-}
-
-void RegisterAllocator::RegisterFile::recycle(int reg)
-{
-    // commented out, since common failure of running out of regs
-    // triggers this assertion. Since the code is not execectued
-    // in that case, it does not matter. No reason to FATAL err.
-    // LOG_FATAL_IF(!isUsed(reg),
-    //         "recycling unallocated register %d",
-    //         reg);
-    mRegs &= ~(1<<reg);
-}
-
-void RegisterAllocator::RegisterFile::recycleSeveral(uint32_t regMask)
-{
-    // commented out, since common failure of running out of regs
-    // triggers this assertion. Since the code is not execectued
-    // in that case, it does not matter. No reason to FATAL err.
-    // LOG_FATAL_IF((mRegs & regMask)!=regMask,
-    //         "recycling unallocated registers "
-    //         "(recycle=%08x, allocated=%08x, unallocated=%08x)",
-    //         regMask, mRegs, mRegs&regMask);
-    mRegs &= ~regMask;
-}
-
-uint32_t RegisterAllocator::RegisterFile::touched() const
-{
-    return mTouched;
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
-
diff --git a/libpixelflinger/codeflinger/GGLAssembler.h b/libpixelflinger/codeflinger/GGLAssembler.h
deleted file mode 100644
index 47dbf3a..0000000
--- a/libpixelflinger/codeflinger/GGLAssembler.h
+++ /dev/null
@@ -1,572 +0,0 @@
-/* libs/pixelflinger/codeflinger/GGLAssembler.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_GGLASSEMBLER_H
-#define ANDROID_GGLASSEMBLER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <private/pixelflinger/ggl_context.h>
-
-#include "ARMAssemblerProxy.h"
-
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-#define CONTEXT_ADDR_LOAD(REG, FIELD) \
-    ADDR_LDR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
-
-#define CONTEXT_ADDR_STORE(REG, FIELD) \
-    ADDR_STR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
-
-#define CONTEXT_LOAD(REG, FIELD) \
-    LDR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
-
-#define CONTEXT_STORE(REG, FIELD) \
-    STR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
-
-
-class RegisterAllocator
-{
-public:
-    class RegisterFile;
-    
-                    RegisterAllocator(int arch);  // NOLINT, implicit
-    RegisterFile&   registerFile();
-    int             reserveReg(int reg);
-    int             obtainReg();
-    void            recycleReg(int reg);
-    void            reset();
-
-    class RegisterFile
-    {
-    public:
-                            RegisterFile(int arch);  // NOLINT, implicit
-                            RegisterFile(const RegisterFile& rhs, int arch);
-                            ~RegisterFile();
-
-                void        reset();
-
-                bool operator == (const RegisterFile& rhs) const;
-                bool operator != (const RegisterFile& rhs) const {
-                    return !operator == (rhs);
-                }
-
-                int         reserve(int reg);
-                void        reserveSeveral(uint32_t regMask);
-
-                void        recycle(int reg);
-                void        recycleSeveral(uint32_t regMask);
-
-                int         obtain();
-        inline  int         isUsed(int reg) const;
-
-                bool        hasFreeRegs() const;
-                int         countFreeRegs() const;                
-
-                uint32_t    touched() const;
-        inline  uint32_t    status() const { return mStatus; }
-        
-        enum {
-            OUT_OF_REGISTERS = 0x1
-        };
-
-    private:
-        uint32_t    mRegs;
-        uint32_t    mTouched;
-        uint32_t    mStatus;
-        int         mArch;
-        uint32_t    mRegisterOffset;    // lets reg alloc use 2..17 for mips
-                                        // while arm uses 0..15
-    };
- 
-    class Scratch
-    {
-    public:
-            explicit Scratch(RegisterFile& regFile)
-                : mRegFile(regFile), mScratch(0) { 
-            }
-            ~Scratch() {
-                mRegFile.recycleSeveral(mScratch);
-            }
-        int obtain() { 
-            int reg = mRegFile.obtain();
-            mScratch |= 1<<reg;
-            return reg;
-        }
-        void recycle(int reg) {
-            mRegFile.recycle(reg);
-            mScratch &= ~(1<<reg);
-        }
-        bool isUsed(int reg) {
-            return (mScratch & (1<<reg));
-        }
-        int countFreeRegs() {
-            return mRegFile.countFreeRegs();
-        }
-    private:
-        RegisterFile&   mRegFile;
-        uint32_t        mScratch;
-    };
-
-    class Spill
-    {
-    public:
-        Spill(RegisterFile& regFile, ARMAssemblerInterface& gen, uint32_t reglist)
-            : mRegFile(regFile), mGen(gen), mRegList(reglist), mCount(0)
-        {
-            if (reglist) {
-                int count = 0;
-                while (reglist) {
-                    count++;
-                    reglist &= ~(1 << (31 - __builtin_clz(reglist)));
-                }
-                if (count == 1) {
-                    int reg = 31 - __builtin_clz(mRegList);
-                    mGen.STR(mGen.AL, reg, mGen.SP, mGen.immed12_pre(-4, 1));
-                } else {
-                    mGen.STM(mGen.AL, mGen.DB, mGen.SP, 1, mRegList);
-                }
-                mRegFile.recycleSeveral(mRegList);
-                mCount = count;
-            }
-        }
-        ~Spill() {
-            if (mRegList) {
-                if (mCount == 1) {
-                    int reg = 31 - __builtin_clz(mRegList);
-                    mGen.LDR(mGen.AL, reg, mGen.SP, mGen.immed12_post(4));
-                } else {
-                    mGen.LDM(mGen.AL, mGen.IA, mGen.SP, 1, mRegList);
-                }
-                mRegFile.reserveSeveral(mRegList);
-            }
-        }
-    private:
-        RegisterFile&           mRegFile;
-        ARMAssemblerInterface&  mGen;
-        uint32_t                mRegList;
-        int                     mCount;
-    };
-    
-private:
-    RegisterFile    mRegs;
-};
-
-// ----------------------------------------------------------------------------
-
-class GGLAssembler : public ARMAssemblerProxy, public RegisterAllocator
-{
-public:
-
-    explicit    GGLAssembler(ARMAssemblerInterface* target);
-    virtual     ~GGLAssembler();
-
-    uint32_t*   base() const { return 0; } // XXX
-    uint32_t*   pc() const { return 0; } // XXX
-
-    void        reset(int opt_level);
-
-    virtual void    prolog();
-    virtual void    epilog(uint32_t touched);
-
-        // generate scanline code for given needs
-    int         scanline(const needs_t& needs, context_t const* c);
-    int         scanline_core(const needs_t& needs, context_t const* c);
-
-        enum {
-            CLEAR_LO    = 0x0001,
-            CLEAR_HI    = 0x0002,
-            CORRUPTIBLE = 0x0004,
-            FIRST       = 0x0008
-        };
-
-        enum { //load/store flags
-            WRITE_BACK  = 0x0001
-        };
-
-        struct reg_t {
-            reg_t() : reg(-1), flags(0) {
-            }
-            reg_t(int r, int f=0)  // NOLINT, implicit
-                : reg(r), flags(f) {
-            }
-            void setTo(int r, int f=0) {
-                reg=r; flags=f;
-            }
-            int         reg;
-            uint16_t    flags;
-        };
-
-        struct integer_t : public reg_t {
-            integer_t() : reg_t(), s(0) {
-            }
-            integer_t(int r, int sz=32, int f=0)  // NOLINT, implicit
-                : reg_t(r, f), s(sz) {
-            }
-            void setTo(int r, int sz=32, int f=0) {
-                reg_t::setTo(r, f); s=sz;
-            }
-            int8_t s;
-            inline int size() const { return s; }
-        };
-        
-        struct pixel_t : public reg_t {
-            pixel_t() : reg_t() {
-                memset(&format, 0, sizeof(GGLFormat));
-            }
-            pixel_t(int r, const GGLFormat* fmt, int f=0)
-                : reg_t(r, f), format(*fmt) {
-            }
-            void setTo(int r, const GGLFormat* fmt, int f=0) {
-                reg_t::setTo(r, f); format = *fmt;
-            }
-            GGLFormat format;
-            inline int hi(int c) const { return format.c[c].h; }
-            inline int low(int c) const { return format.c[c].l; }
-            inline int mask(int c) const { return ((1<<size(c))-1) << low(c); }
-            inline int size() const { return format.size*8; }
-            inline int size(int c) const { return component_size(c); }
-            inline int component_size(int c) const { return hi(c) - low(c); }
-        };
-
-        struct component_t : public reg_t {
-            component_t() : reg_t(), h(0), l(0) {
-            }
-            component_t(int r, int f=0)  // NOLINT, implicit
-                : reg_t(r, f), h(0), l(0) {
-            }
-            component_t(int r, int lo, int hi, int f=0)
-                : reg_t(r, f), h(hi), l(lo) {
-            }
-            explicit component_t(const integer_t& rhs)
-                : reg_t(rhs.reg, rhs.flags), h(rhs.s), l(0) {
-            }
-            explicit component_t(const pixel_t& rhs, int component) {
-                setTo(  rhs.reg, 
-                        rhs.format.c[component].l,
-                        rhs.format.c[component].h,
-                        rhs.flags|CLEAR_LO|CLEAR_HI);
-            }
-            void setTo(int r, int lo=0, int hi=0, int f=0) {
-                reg_t::setTo(r, f); h=hi; l=lo;
-            }
-            int8_t h;
-            int8_t l;
-            inline int size() const { return h-l; }
-        };
-
-        struct pointer_t : public reg_t {
-            pointer_t() : reg_t(), size(0) {
-            }
-            pointer_t(int r, int s, int f=0)
-                : reg_t(r, f), size(s) {
-            }
-            void setTo(int r, int s, int f=0) {
-                reg_t::setTo(r, f); size=s;
-            }
-            int8_t size;
-        };
-
-
-private:
-    // GGLAssembler hides RegisterAllocator's and ARMAssemblerProxy's reset
-    // methods by providing a reset method with a different parameter set. The
-    // intent of GGLAssembler's reset method is to wrap the inherited reset
-    // methods, so make these methods private in order to prevent direct calls
-    // to these methods from clients.
-    using RegisterAllocator::reset;
-    using ARMAssemblerProxy::reset;
-
-    struct tex_coord_t {
-        reg_t       s;
-        reg_t       t;
-        pointer_t   ptr;
-    };
-
-    struct fragment_parts_t {
-        uint32_t    packed  : 1;
-        uint32_t    reload  : 2;
-        uint32_t    iterated_packed  : 1;
-        pixel_t     iterated;
-        pointer_t   cbPtr;
-        pointer_t   covPtr;
-        reg_t       count;
-        reg_t       argb[4];
-        reg_t       argb_dx[4];
-        reg_t       z;
-        reg_t       dither;
-        pixel_t     texel[GGL_TEXTURE_UNIT_COUNT];
-        tex_coord_t coords[GGL_TEXTURE_UNIT_COUNT];
-    };
-    
-    struct texture_unit_t {
-        int         format_idx;
-        GGLFormat   format;
-        int         bits;
-        int         swrap;
-        int         twrap;
-        int         env;
-        int         pot;
-        int         linear;
-        uint8_t     mask;
-        uint8_t     replaced;
-    };
-
-    struct texture_machine_t {
-        texture_unit_t  tmu[GGL_TEXTURE_UNIT_COUNT];
-        uint8_t         mask;
-        uint8_t         replaced;
-        uint8_t         directTexture;
-        uint8_t         activeUnits;
-    };
-
-    struct component_info_t {
-        bool    masked      : 1;
-        bool    inDest      : 1;
-        bool    needed      : 1;
-        bool    replaced    : 1;
-        bool    iterated    : 1;
-        bool    smooth      : 1;
-        bool    blend       : 1;
-        bool    fog         : 1;
-    };
-
-    struct builder_context_t {
-        context_t const*    c;
-        needs_t             needs;
-        int                 Rctx;
-    };
-
-    template <typename T>
-    void modify(T& r, Scratch& regs)
-    {
-        if (!(r.flags & CORRUPTIBLE)) {
-            r.reg = regs.obtain();
-            r.flags |= CORRUPTIBLE;
-        }
-    }
-
-    // helpers
-    void    base_offset(const pointer_t& d, const pointer_t& b, const reg_t& o);
-
-    // texture environement
-    void    modulate(   component_t& dest,
-                        const component_t& incoming,
-                        const pixel_t& texel, int component);
-
-    void    decal(  component_t& dest,
-                    const component_t& incoming,
-                    const pixel_t& texel, int component);
-
-    void    blend(  component_t& dest,
-                    const component_t& incoming,
-                    const pixel_t& texel, int component, int tmu);
-
-    void    add(  component_t& dest,
-                    const component_t& incoming,
-                    const pixel_t& texel, int component);
-
-    // load/store stuff
-    void    store(const pointer_t& addr, const pixel_t& src, uint32_t flags=0);
-    void    load(const pointer_t& addr, const pixel_t& dest, uint32_t flags=0);
-    void    extract(integer_t& d, const pixel_t& s, int component);    
-    void    extract(component_t& d, const pixel_t& s, int component);    
-    void    extract(integer_t& d, int s, int h, int l, int bits=32);
-    void    expand(integer_t& d, const integer_t& s, int dbits);
-    void    expand(integer_t& d, const component_t& s, int dbits);
-    void    expand(component_t& d, const component_t& s, int dbits);
-    void    downshift(pixel_t& d, int component, component_t s, const reg_t& dither);
-
-
-    void    mul_factor( component_t& d,
-                        const integer_t& v,
-                        const integer_t& f);
-
-    void    mul_factor_add( component_t& d,
-                            const integer_t& v,
-                            const integer_t& f,
-                            const component_t& a);
-
-    void    component_add(  component_t& d,
-                            const integer_t& dst,
-                            const integer_t& src);
-
-    void    component_sat(  const component_t& v);
-
-
-    void    build_scanline_prolog(  fragment_parts_t& parts,
-                                    const needs_t& needs);
-
-    void    build_smooth_shade(const fragment_parts_t& parts);
-
-    void    build_component(    pixel_t& pixel,
-                                const fragment_parts_t& parts,
-                                int component,
-                                Scratch& global_scratches);
-                                
-    void    build_incoming_component(
-                                component_t& temp,
-                                int dst_size,
-                                const fragment_parts_t& parts,
-                                int component,
-                                Scratch& scratches,
-                                Scratch& global_scratches);
-
-    void    init_iterated_color(fragment_parts_t& parts, const reg_t& x);
-
-    void    build_iterated_color(   component_t& fragment,
-                                    const fragment_parts_t& parts,
-                                    int component,
-                                    Scratch& regs);
-
-    void    decodeLogicOpNeeds(const needs_t& needs);
-    
-    void    decodeTMUNeeds(const needs_t& needs, context_t const* c);
-
-    void    init_textures(  tex_coord_t* coords,
-                            const reg_t& x,
-                            const reg_t& y);
-
-    void    build_textures( fragment_parts_t& parts,
-                            Scratch& regs);
-
-    void    filter8(   const fragment_parts_t& parts,
-                        pixel_t& texel, const texture_unit_t& tmu,
-                        int U, int V, pointer_t& txPtr,
-                        int FRAC_BITS);
-
-    void    filter16(   const fragment_parts_t& parts,
-                        pixel_t& texel, const texture_unit_t& tmu,
-                        int U, int V, pointer_t& txPtr,
-                        int FRAC_BITS);
-
-    void    filter24(   const fragment_parts_t& parts,
-                        pixel_t& texel, const texture_unit_t& tmu,
-                        int U, int V, pointer_t& txPtr,
-                        int FRAC_BITS);
-
-    void    filter32(   const fragment_parts_t& parts,
-                        pixel_t& texel, const texture_unit_t& tmu,
-                        int U, int V, pointer_t& txPtr,
-                        int FRAC_BITS);
-
-    void    build_texture_environment(  component_t& fragment,
-                                        const fragment_parts_t& parts,
-                                        int component,
-                                        Scratch& regs);
-
-    void    wrapping(   int d,
-                        int coord, int size,
-                        int tx_wrap, int tx_linear);
-
-    void    build_fog(  component_t& temp,
-                        int component,
-                        Scratch& parent_scratches);
-
-    void    build_blending(     component_t& in_out,
-                                const pixel_t& pixel,
-                                int component,
-                                Scratch& parent_scratches);
-
-    void    build_blend_factor(
-                integer_t& factor, int f, int component,
-                const pixel_t& dst_pixel,
-                integer_t& fragment,
-                integer_t& fb,
-                Scratch& scratches);
-
-    void    build_blendFOneMinusF(  component_t& temp,
-                                    const integer_t& factor, 
-                                    const integer_t& fragment,
-                                    const integer_t& fb);
-
-    void    build_blendOneMinusFF(  component_t& temp,
-                                    const integer_t& factor, 
-                                    const integer_t& fragment,
-                                    const integer_t& fb);
-
-    void build_coverage_application(component_t& fragment,
-                                    const fragment_parts_t& parts,
-                                    Scratch& regs);
-
-    void build_alpha_test(component_t& fragment, const fragment_parts_t& parts);
-
-    enum { Z_TEST=1, Z_WRITE=2 }; 
-    void build_depth_test(const fragment_parts_t& parts, uint32_t mask);
-    void build_iterate_z(const fragment_parts_t& parts);
-    void build_iterate_f(const fragment_parts_t& parts);
-    void build_iterate_texture_coordinates(const fragment_parts_t& parts);
-
-    void build_logic_op(pixel_t& pixel, Scratch& regs);
-
-    void build_masking(pixel_t& pixel, Scratch& regs);
-
-    void build_and_immediate(int d, int s, uint32_t mask, int bits);
-
-    bool    isAlphaSourceNeeded() const;
-
-    enum {
-        FACTOR_SRC=1, FACTOR_DST=2, BLEND_SRC=4, BLEND_DST=8 
-    };
-    
-    enum {
-        LOGIC_OP=1, LOGIC_OP_SRC=2, LOGIC_OP_DST=4
-    };
-
-    static int blending_codes(int fs, int fd);
-
-    builder_context_t   mBuilderContext;
-    texture_machine_t   mTextureMachine;
-    component_info_t    mInfo[4];
-    int                 mBlending;
-    int                 mMasking;
-    int                 mAllMasked;
-    int                 mLogicOp;
-    int                 mAlphaTest;
-    int                 mAA;
-    int                 mDithering;
-    int                 mDepthTest;
-
-    int             mSmooth;
-    int             mFog;
-    pixel_t         mDstPixel;
-    
-    GGLFormat       mCbFormat;
-    
-    int             mBlendFactorCached;
-    integer_t       mAlphaSource;
-    
-    int             mBaseRegister;
-    
-    int             mBlendSrc;
-    int             mBlendDst;
-    int             mBlendSrcA;
-    int             mBlendDstA;
-    
-    int             mOptLevel;
-};
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
-
-#endif // ANDROID_GGLASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/MIPS64Assembler.cpp b/libpixelflinger/codeflinger/MIPS64Assembler.cpp
deleted file mode 100644
index d6d2156..0000000
--- a/libpixelflinger/codeflinger/MIPS64Assembler.cpp
+++ /dev/null
@@ -1,1447 +0,0 @@
-/* libs/pixelflinger/codeflinger/MIPS64Assembler.cpp
-**
-** Copyright 2015, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-
-/* MIPS64 assembler and ARM->MIPS64 assembly translator
-**
-** The approach is utilize MIPSAssembler generator, using inherited MIPS64Assembler
-** that overrides just the specific MIPS64r6 instructions.
-** For now ArmToMips64Assembler is copied over from ArmToMipsAssembler class,
-** changing some MIPS64r6 related stuff.
-**
-*/
-
-#define LOG_TAG "MIPS64Assembler"
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <cutils/properties.h>
-#include <log/log.h>
-#include <private/pixelflinger/ggl_context.h>
-
-#include "MIPS64Assembler.h"
-#include "CodeCache.h"
-#include "mips64_disassem.h"
-
-#define NOT_IMPLEMENTED()  LOG_ALWAYS_FATAL("Arm instruction %s not yet implemented\n", __func__)
-#define __unused __attribute__((__unused__))
-
-// ----------------------------------------------------------------------------
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark ArmToMips64Assembler...
-#endif
-
-ArmToMips64Assembler::ArmToMips64Assembler(const sp<Assembly>& assembly,
-                                           char *abuf, int linesz, int instr_count)
-    :   ARMAssemblerInterface(),
-        mArmDisassemblyBuffer(abuf),
-        mArmLineLength(linesz),
-        mArmInstrCount(instr_count),
-        mInum(0),
-        mAssembly(assembly)
-{
-    mMips = new MIPS64Assembler(assembly, this);
-    mArmPC = (uint32_t **) malloc(ARM_MAX_INSTUCTIONS * sizeof(uint32_t *));
-    init_conditional_labels();
-}
-
-ArmToMips64Assembler::ArmToMips64Assembler(void* assembly)
-    :   ARMAssemblerInterface(),
-        mArmDisassemblyBuffer(NULL),
-        mInum(0),
-        mAssembly(NULL)
-{
-    mMips = new MIPS64Assembler(assembly, this);
-    mArmPC = (uint32_t **) malloc(ARM_MAX_INSTUCTIONS * sizeof(uint32_t *));
-    init_conditional_labels();
-}
-
-ArmToMips64Assembler::~ArmToMips64Assembler()
-{
-    delete mMips;
-    free((void *) mArmPC);
-}
-
-uint32_t* ArmToMips64Assembler::pc() const
-{
-    return mMips->pc();
-}
-
-uint32_t* ArmToMips64Assembler::base() const
-{
-    return mMips->base();
-}
-
-void ArmToMips64Assembler::reset()
-{
-    cond.labelnum = 0;
-    mInum = 0;
-    mMips->reset();
-}
-
-int ArmToMips64Assembler::getCodegenArch()
-{
-    return CODEGEN_ARCH_MIPS64;
-}
-
-void ArmToMips64Assembler::comment(const char* string)
-{
-    mMips->comment(string);
-}
-
-void ArmToMips64Assembler::label(const char* theLabel)
-{
-    mMips->label(theLabel);
-}
-
-void ArmToMips64Assembler::disassemble(const char* name)
-{
-    mMips->disassemble(name);
-}
-
-void ArmToMips64Assembler::init_conditional_labels()
-{
-    int i;
-    for (i=0;i<99; ++i) {
-        sprintf(cond.label[i], "cond_%d", i);
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Prolog/Epilog & Generate...
-#endif
-
-void ArmToMips64Assembler::prolog()
-{
-    mArmPC[mInum++] = pc();  // save starting PC for this instr
-
-    mMips->DADDIU(R_sp, R_sp, -(5 * 8));
-    mMips->SD(R_s0, R_sp, 0);
-    mMips->SD(R_s1, R_sp, 8);
-    mMips->SD(R_s2, R_sp, 16);
-    mMips->SD(R_s3, R_sp, 24);
-    mMips->SD(R_s4, R_sp, 32);
-    mMips->MOVE(R_v0, R_a0);    // move context * passed in a0 to v0 (arm r0)
-}
-
-void ArmToMips64Assembler::epilog(uint32_t touched __unused)
-{
-    mArmPC[mInum++] = pc();  // save starting PC for this instr
-
-    mMips->LD(R_s0, R_sp, 0);
-    mMips->LD(R_s1, R_sp, 8);
-    mMips->LD(R_s2, R_sp, 16);
-    mMips->LD(R_s3, R_sp, 24);
-    mMips->LD(R_s4, R_sp, 32);
-    mMips->DADDIU(R_sp, R_sp, (5 * 8));
-    mMips->JR(R_ra);
-
-}
-
-int ArmToMips64Assembler::generate(const char* name)
-{
-    return mMips->generate(name);
-}
-
-void ArmToMips64Assembler::fix_branches()
-{
-    mMips->fix_branches();
-}
-
-uint32_t* ArmToMips64Assembler::pcForLabel(const char* label)
-{
-    return mMips->pcForLabel(label);
-}
-
-void ArmToMips64Assembler::set_condition(int mode, int R1, int R2) {
-    if (mode == 2) {
-        cond.type = SBIT_COND;
-    } else {
-        cond.type = CMP_COND;
-    }
-    cond.r1 = R1;
-    cond.r2 = R2;
-}
-
-//----------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Addressing modes & shifters...
-#endif
-
-
-// do not need this for MIPS, but it is in the Interface (virtual)
-int ArmToMips64Assembler::buildImmediate(
-        uint32_t immediate, uint32_t& rot, uint32_t& imm)
-{
-    // for MIPS, any 32-bit immediate is OK
-    rot = 0;
-    imm = immediate;
-    return 0;
-}
-
-// shifters...
-
-bool ArmToMips64Assembler::isValidImmediate(uint32_t immediate __unused)
-{
-    // for MIPS, any 32-bit immediate is OK
-    return true;
-}
-
-uint32_t ArmToMips64Assembler::imm(uint32_t immediate)
-{
-    amode.value = immediate;
-    return AMODE_IMM;
-}
-
-uint32_t ArmToMips64Assembler::reg_imm(int Rm, int type, uint32_t shift)
-{
-    amode.reg = Rm;
-    amode.stype = type;
-    amode.value = shift;
-    return AMODE_REG_IMM;
-}
-
-uint32_t ArmToMips64Assembler::reg_rrx(int Rm __unused)
-{
-    // reg_rrx mode is not used in the GLLAssember code at this time
-    return AMODE_UNSUPPORTED;
-}
-
-uint32_t ArmToMips64Assembler::reg_reg(int Rm __unused, int type __unused,
-                                       int Rs __unused)
-{
-    // reg_reg mode is not used in the GLLAssember code at this time
-    return AMODE_UNSUPPORTED;
-}
-
-
-// addressing modes...
-// LDR(B)/STR(B)/PLD (immediate and Rm can be negative, which indicate U=0)
-uint32_t ArmToMips64Assembler::immed12_pre(int32_t immed12, int W)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-    amode.value = immed12;
-    amode.writeback = W;
-    return AMODE_IMM_12_PRE;
-}
-
-uint32_t ArmToMips64Assembler::immed12_post(int32_t immed12)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-
-    amode.value = immed12;
-    return AMODE_IMM_12_POST;
-}
-
-uint32_t ArmToMips64Assembler::reg_scale_pre(int Rm, int type,
-        uint32_t shift, int W)
-{
-    LOG_ALWAYS_FATAL_IF(W | type | shift, "reg_scale_pre adv modes not yet implemented");
-
-    amode.reg = Rm;
-    // amode.stype = type;      // more advanced modes not used in GGLAssembler yet
-    // amode.value = shift;
-    // amode.writeback = W;
-    return AMODE_REG_SCALE_PRE;
-}
-
-uint32_t ArmToMips64Assembler::reg_scale_post(int Rm __unused, int type __unused,
-                                              uint32_t shift __unused)
-{
-    LOG_ALWAYS_FATAL("adr mode reg_scale_post not yet implemented\n");
-    return AMODE_UNSUPPORTED;
-}
-
-// LDRH/LDRSB/LDRSH/STRH (immediate and Rm can be negative, which indicate U=0)
-uint32_t ArmToMips64Assembler::immed8_pre(int32_t immed8, int W __unused)
-{
-    LOG_ALWAYS_FATAL("adr mode immed8_pre not yet implemented\n");
-
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-    return AMODE_IMM_8_PRE;
-}
-
-uint32_t ArmToMips64Assembler::immed8_post(int32_t immed8)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-    amode.value = immed8;
-    return AMODE_IMM_8_POST;
-}
-
-uint32_t ArmToMips64Assembler::reg_pre(int Rm, int W)
-{
-    LOG_ALWAYS_FATAL_IF(W, "reg_pre writeback not yet implemented");
-    amode.reg = Rm;
-    return AMODE_REG_PRE;
-}
-
-uint32_t ArmToMips64Assembler::reg_post(int Rm __unused)
-{
-    LOG_ALWAYS_FATAL("adr mode reg_post not yet implemented\n");
-    return AMODE_UNSUPPORTED;
-}
-
-
-
-// ----------------------------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Data Processing...
-#endif
-
-// check if the operand registers from a previous CMP or S-bit instruction
-// would be overwritten by this instruction. If so, move the value to a
-// safe register.
-// Note that we cannot tell at _this_ instruction time if a future (conditional)
-// instruction will _also_ use this value (a defect of the simple 1-pass, one-
-// instruction-at-a-time translation). Therefore we must be conservative and
-// save the value before it is overwritten. This costs an extra MOVE instr.
-
-void ArmToMips64Assembler::protectConditionalOperands(int Rd)
-{
-    if (Rd == cond.r1) {
-        mMips->MOVE(R_cmp, cond.r1);
-        cond.r1 = R_cmp;
-    }
-    if (cond.type == CMP_COND && Rd == cond.r2) {
-        mMips->MOVE(R_cmp2, cond.r2);
-        cond.r2 = R_cmp2;
-    }
-}
-
-
-// interprets the addressing mode, and generates the common code
-// used by the majority of data-processing ops. Many MIPS instructions
-// have a register-based form and a different immediate form. See
-// opAND below for an example. (this could be inlined)
-//
-// this works with the imm(), reg_imm() methods above, which are directly
-// called by the GLLAssembler.
-// note: _signed parameter defaults to false (un-signed)
-// note: tmpReg parameter defaults to 1, MIPS register AT
-int ArmToMips64Assembler::dataProcAdrModes(int op, int& source, bool _signed, int tmpReg)
-{
-    if (op < AMODE_REG) {
-        source = op;
-        return SRC_REG;
-    } else if (op == AMODE_IMM) {
-        if ((!_signed && amode.value > 0xffff)
-                || (_signed && ((int)amode.value < -32768 || (int)amode.value > 32767) )) {
-            mMips->LUI(tmpReg, (amode.value >> 16));
-            if (amode.value & 0x0000ffff) {
-                mMips->ORI(tmpReg, tmpReg, (amode.value & 0x0000ffff));
-            }
-            source = tmpReg;
-            return SRC_REG;
-        } else {
-            source = amode.value;
-            return SRC_IMM;
-        }
-    } else if (op == AMODE_REG_IMM) {
-        switch (amode.stype) {
-            case LSL: mMips->SLL(tmpReg, amode.reg, amode.value); break;
-            case LSR: mMips->SRL(tmpReg, amode.reg, amode.value); break;
-            case ASR: mMips->SRA(tmpReg, amode.reg, amode.value); break;
-            case ROR: mMips->ROTR(tmpReg, amode.reg, amode.value); break;
-        }
-        source = tmpReg;
-        return SRC_REG;
-    } else {  // adr mode RRX is not used in GGL Assembler at this time
-        // we are screwed, this should be exception, assert-fail or something
-        LOG_ALWAYS_FATAL("adr mode reg_rrx not yet implemented\n");
-        return SRC_ERROR;
-    }
-}
-
-
-void ArmToMips64Assembler::dataProcessing(int opcode, int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    int src;    // src is modified by dataProcAdrModes() - passed as int&
-
-    if (cc != AL) {
-        protectConditionalOperands(Rd);
-        // the branch tests register(s) set by prev CMP or instr with 'S' bit set
-        // inverse the condition to jump past this conditional instruction
-        ArmToMips64Assembler::B(cc^1, cond.label[++cond.labelnum]);
-    } else {
-        mArmPC[mInum++] = pc();  // save starting PC for this instr
-    }
-
-    switch (opcode) {
-    case opAND:
-        if (dataProcAdrModes(Op2, src) == SRC_REG) {
-            mMips->AND(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->ANDI(Rd, Rn, src);
-        }
-        break;
-
-    case opADD:
-        // set "signed" to true for adr modes
-        if (dataProcAdrModes(Op2, src, true) == SRC_REG) {
-            mMips->ADDU(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->ADDIU(Rd, Rn, src);
-        }
-        break;
-
-    case opSUB:
-        // set "signed" to true for adr modes
-        if (dataProcAdrModes(Op2, src, true) == SRC_REG) {
-            mMips->SUBU(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->SUBIU(Rd, Rn, src);
-        }
-        break;
-
-    case opADD64:
-        // set "signed" to true for adr modes
-        if (dataProcAdrModes(Op2, src, true) == SRC_REG) {
-            mMips->DADDU(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->DADDIU(Rd, Rn, src);
-        }
-        break;
-
-    case opSUB64:
-        // set "signed" to true for adr modes
-        if (dataProcAdrModes(Op2, src, true) == SRC_REG) {
-            mMips->DSUBU(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->DSUBIU(Rd, Rn, src);
-        }
-        break;
-
-    case opEOR:
-        if (dataProcAdrModes(Op2, src) == SRC_REG) {
-            mMips->XOR(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->XORI(Rd, Rn, src);
-        }
-        break;
-
-    case opORR:
-        if (dataProcAdrModes(Op2, src) == SRC_REG) {
-            mMips->OR(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->ORI(Rd, Rn, src);
-        }
-        break;
-
-    case opBIC:
-        if (dataProcAdrModes(Op2, src) == SRC_IMM) {
-            // if we are 16-bit imnmediate, load to AT reg
-            mMips->ORI(R_at, 0, src);
-            src = R_at;
-        }
-        mMips->NOT(R_at, src);
-        mMips->AND(Rd, Rn, R_at);
-        break;
-
-    case opRSB:
-        if (dataProcAdrModes(Op2, src) == SRC_IMM) {
-            // if we are 16-bit imnmediate, load to AT reg
-            mMips->ORI(R_at, 0, src);
-            src = R_at;
-        }
-        mMips->SUBU(Rd, src, Rn);   // subu with the parameters reversed
-        break;
-
-    case opMOV:
-        if (Op2 < AMODE_REG) {  // op2 is reg # in this case
-            mMips->MOVE(Rd, Op2);
-        } else if (Op2 == AMODE_IMM) {
-            if (amode.value > 0xffff) {
-                mMips->LUI(Rd, (amode.value >> 16));
-                if (amode.value & 0x0000ffff) {
-                    mMips->ORI(Rd, Rd, (amode.value & 0x0000ffff));
-                }
-             } else {
-                mMips->ORI(Rd, 0, amode.value);
-            }
-        } else if (Op2 == AMODE_REG_IMM) {
-            switch (amode.stype) {
-            case LSL: mMips->SLL(Rd, amode.reg, amode.value); break;
-            case LSR: mMips->SRL(Rd, amode.reg, amode.value); break;
-            case ASR: mMips->SRA(Rd, amode.reg, amode.value); break;
-            case ROR: mMips->ROTR(Rd, amode.reg, amode.value); break;
-            }
-        }
-        else {
-            // adr mode RRX is not used in GGL Assembler at this time
-            mMips->UNIMPL();
-        }
-        break;
-
-    case opMVN:     // this is a 1's complement: NOT
-        if (Op2 < AMODE_REG) {  // op2 is reg # in this case
-            mMips->NOR(Rd, Op2, 0);     // NOT is NOR with 0
-            break;
-        } else if (Op2 == AMODE_IMM) {
-            if (amode.value > 0xffff) {
-                mMips->LUI(Rd, (amode.value >> 16));
-                if (amode.value & 0x0000ffff) {
-                    mMips->ORI(Rd, Rd, (amode.value & 0x0000ffff));
-                }
-             } else {
-                mMips->ORI(Rd, 0, amode.value);
-             }
-        } else if (Op2 == AMODE_REG_IMM) {
-            switch (amode.stype) {
-            case LSL: mMips->SLL(Rd, amode.reg, amode.value); break;
-            case LSR: mMips->SRL(Rd, amode.reg, amode.value); break;
-            case ASR: mMips->SRA(Rd, amode.reg, amode.value); break;
-            case ROR: mMips->ROTR(Rd, amode.reg, amode.value); break;
-            }
-        }
-        else {
-            // adr mode RRX is not used in GGL Assembler at this time
-            mMips->UNIMPL();
-        }
-        mMips->NOR(Rd, Rd, 0);     // NOT is NOR with 0
-        break;
-
-    case opCMP:
-        // Either operand of a CMP instr could get overwritten by a subsequent
-        // conditional instruction, which is ok, _UNLESS_ there is a _second_
-        // conditional instruction. Under MIPS, this requires doing the comparison
-        // again (SLT), and the original operands must be available. (and this
-        // pattern of multiple conditional instructions from same CMP _is_ used
-        // in GGL-Assembler)
-        //
-        // For now, if a conditional instr overwrites the operands, we will
-        // move them to dedicated temp regs. This is ugly, and inefficient,
-        // and should be optimized.
-        //
-        // WARNING: making an _Assumption_ that CMP operand regs will NOT be
-        // trashed by intervening NON-conditional instructions. In the general
-        // case this is legal, but it is NOT currently done in GGL-Assembler.
-
-        cond.type = CMP_COND;
-        cond.r1 = Rn;
-        if (dataProcAdrModes(Op2, src, false, R_cmp2) == SRC_REG) {
-            cond.r2 = src;
-        } else {                        // adr mode was SRC_IMM
-            mMips->ORI(R_cmp2, R_zero, src);
-            cond.r2 = R_cmp2;
-        }
-
-        break;
-
-
-    case opTST:
-    case opTEQ:
-    case opCMN:
-    case opADC:
-    case opSBC:
-    case opRSC:
-        mMips->UNIMPL(); // currently unused in GGL Assembler code
-        break;
-    }
-
-    if (cc != AL) {
-        mMips->label(cond.label[cond.labelnum]);
-    }
-    if (s && opcode != opCMP) {
-        cond.type = SBIT_COND;
-        cond.r1 = Rd;
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Multiply...
-#endif
-
-// multiply, accumulate
-void ArmToMips64Assembler::MLA(int cc __unused, int s,
-        int Rd, int Rm, int Rs, int Rn) {
-
-    //ALOGW("MLA");
-    mArmPC[mInum++] = pc();  // save starting PC for this instr
-
-    mMips->MUL(R_at, Rm, Rs);
-    mMips->ADDU(Rd, R_at, Rn);
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = Rd;
-    }
-}
-
-void ArmToMips64Assembler::MUL(int cc __unused, int s,
-        int Rd, int Rm, int Rs) {
-    mArmPC[mInum++] = pc();
-    mMips->MUL(Rd, Rm, Rs);
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = Rd;
-    }
-}
-
-void ArmToMips64Assembler::UMULL(int cc __unused, int s,
-        int RdLo, int RdHi, int Rm, int Rs) {
-    mArmPC[mInum++] = pc();
-    mMips->MUH(RdHi, Rm, Rs);
-    mMips->MUL(RdLo, Rm, Rs);
-
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on UMULL must be on 64-bit result\n");
-    }
-}
-
-void ArmToMips64Assembler::UMUAL(int cc __unused, int s,
-        int RdLo __unused, int RdHi, int Rm __unused, int Rs __unused) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "UMUAL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    // *mPC++ =    (cc<<28) | (1<<23) | (1<<21) | (s<<20) |
-    //             (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on UMULL must be on 64-bit result\n");
-    }
-}
-
-void ArmToMips64Assembler::SMULL(int cc __unused, int s,
-        int RdLo __unused, int RdHi, int Rm __unused, int Rs __unused) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "SMULL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    // *mPC++ =    (cc<<28) | (1<<23) | (1<<22) | (s<<20) |
-    //             (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on SMULL must be on 64-bit result\n");
-    }
-}
-void ArmToMips64Assembler::SMUAL(int cc __unused, int s,
-        int RdLo __unused, int RdHi, int Rm __unused, int Rs __unused) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "SMUAL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    // *mPC++ =    (cc<<28) | (1<<23) | (1<<22) | (1<<21) | (s<<20) |
-    //             (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on SMUAL must be on 64-bit result\n");
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Branches...
-#endif
-
-// branches...
-
-void ArmToMips64Assembler::B(int cc, const char* label)
-{
-    mArmPC[mInum++] = pc();
-    if (cond.type == SBIT_COND) { cond.r2 = R_zero; }
-
-    switch(cc) {
-        case EQ: mMips->BEQ(cond.r1, cond.r2, label); break;
-        case NE: mMips->BNE(cond.r1, cond.r2, label); break;
-        case HS: mMips->BGEU(cond.r1, cond.r2, label); break;
-        case LO: mMips->BLTU(cond.r1, cond.r2, label); break;
-        case MI: mMips->BLT(cond.r1, cond.r2, label); break;
-        case PL: mMips->BGE(cond.r1, cond.r2, label); break;
-
-        case HI: mMips->BGTU(cond.r1, cond.r2, label); break;
-        case LS: mMips->BLEU(cond.r1, cond.r2, label); break;
-        case GE: mMips->BGE(cond.r1, cond.r2, label); break;
-        case LT: mMips->BLT(cond.r1, cond.r2, label); break;
-        case GT: mMips->BGT(cond.r1, cond.r2, label); break;
-        case LE: mMips->BLE(cond.r1, cond.r2, label); break;
-        case AL: mMips->B(label); break;
-        case NV: /* B Never - no instruction */ break;
-
-        case VS:
-        case VC:
-        default:
-            LOG_ALWAYS_FATAL("Unsupported cc: %02x\n", cc);
-            break;
-    }
-}
-
-void ArmToMips64Assembler::BL(int cc __unused, const char* label __unused)
-{
-    LOG_ALWAYS_FATAL("branch-and-link not supported yet\n");
-    mArmPC[mInum++] = pc();
-}
-
-// no use for Branches with integer PC, but they're in the Interface class ....
-void ArmToMips64Assembler::B(int cc __unused, uint32_t* to_pc __unused)
-{
-    LOG_ALWAYS_FATAL("branch to absolute PC not supported, use Label\n");
-    mArmPC[mInum++] = pc();
-}
-
-void ArmToMips64Assembler::BL(int cc __unused, uint32_t* to_pc __unused)
-{
-    LOG_ALWAYS_FATAL("branch to absolute PC not supported, use Label\n");
-    mArmPC[mInum++] = pc();
-}
-
-void ArmToMips64Assembler::BX(int cc __unused, int Rn __unused)
-{
-    LOG_ALWAYS_FATAL("branch to absolute PC not supported, use Label\n");
-    mArmPC[mInum++] = pc();
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Data Transfer...
-#endif
-
-// data transfer...
-void ArmToMips64Assembler::LDR(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;      // convert LDR via Arm SP to LW via Mips SP
-            }
-            mMips->LW(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->DADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;      // convert STR thru Arm SP to STR thru Mips SP
-            }
-            mMips->LW(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->DADDU(R_at, Rn, amode.reg);
-            mMips->LW(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMips64Assembler::LDRB(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            mMips->LBU(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->DADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->LBU(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->DADDU(R_at, Rn, amode.reg);
-            mMips->LBU(Rd, R_at, 0);
-            break;
-    }
-
-}
-
-void ArmToMips64Assembler::STR(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;  // convert STR thru Arm SP to SW thru Mips SP
-            }
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                // If we will writeback, then update the index reg, then store.
-                // This correctly handles stack-push case.
-                mMips->DADDIU(Rn, Rn, amode.value);
-                mMips->SW(Rd, Rn, 0);
-            } else {
-                // No writeback so store offset by value
-                mMips->SW(Rd, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->SW(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);  // post index always writes back
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->DADDU(R_at, Rn, amode.reg);
-            mMips->SW(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMips64Assembler::STRB(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            mMips->SB(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->DADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->SB(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->DADDU(R_at, Rn, amode.reg);
-            mMips->SB(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMips64Assembler::LDRH(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed8_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_8_PRE:      // no support yet for writeback
-            mMips->LHU(Rd, Rn, amode.value);
-            break;
-        case AMODE_IMM_8_POST:
-            mMips->LHU(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_PRE:
-            // we only support simple base +/- index
-            if (amode.reg >= 0) {
-                mMips->DADDU(R_at, Rn, amode.reg);
-            } else {
-                mMips->DSUBU(R_at, Rn, abs(amode.reg));
-            }
-            mMips->LHU(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMips64Assembler::LDRSB(int cc __unused, int Rd __unused,
-                                 int Rn __unused, uint32_t offset __unused)
-{
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::LDRSH(int cc __unused, int Rd __unused,
-                                 int Rn __unused, uint32_t offset __unused)
-{
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::STRH(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed8_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_8_PRE:      // no support yet for writeback
-            mMips->SH(Rd, Rn, amode.value);
-            break;
-        case AMODE_IMM_8_POST:
-            mMips->SH(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_PRE:
-            // we only support simple base +/- index
-            if (amode.reg >= 0) {
-                mMips->DADDU(R_at, Rn, amode.reg);
-            } else {
-                mMips->DSUBU(R_at, Rn, abs(amode.reg));
-            }
-            mMips->SH(Rd, R_at, 0);
-            break;
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Block Data Transfer...
-#endif
-
-// block data transfer...
-void ArmToMips64Assembler::LDM(int cc __unused, int dir __unused,
-        int Rn __unused, int W __unused, uint32_t reg_list __unused)
-{   //                        ED FD EA FA      IB IA DB DA
-    // const uint8_t P[8] = { 1, 0, 1, 0,      1, 0, 1, 0 };
-    // const uint8_t U[8] = { 1, 1, 0, 0,      1, 1, 0, 0 };
-    // *mPC++ = (cc<<28) | (4<<25) | (uint32_t(P[dir])<<24) |
-    //         (uint32_t(U[dir])<<23) | (1<<20) | (W<<21) | (Rn<<16) | reg_list;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::STM(int cc __unused, int dir __unused,
-        int Rn __unused, int W __unused, uint32_t reg_list __unused)
-{   //                        FA EA FD ED      IB IA DB DA
-    // const uint8_t P[8] = { 0, 1, 0, 1,      1, 0, 1, 0 };
-    // const uint8_t U[8] = { 0, 0, 1, 1,      1, 1, 0, 0 };
-    // *mPC++ = (cc<<28) | (4<<25) | (uint32_t(P[dir])<<24) |
-    //         (uint32_t(U[dir])<<23) | (0<<20) | (W<<21) | (Rn<<16) | reg_list;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Special...
-#endif
-
-// special...
-void ArmToMips64Assembler::SWP(int cc __unused, int Rn __unused,
-                               int Rd __unused, int Rm __unused) {
-    // *mPC++ = (cc<<28) | (2<<23) | (Rn<<16) | (Rd << 12) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::SWPB(int cc __unused, int Rn __unused,
-                                int Rd __unused, int Rm __unused) {
-    // *mPC++ = (cc<<28) | (2<<23) | (1<<22) | (Rn<<16) | (Rd << 12) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::SWI(int cc __unused, uint32_t comment __unused) {
-    // *mPC++ = (cc<<28) | (0xF<<24) | comment;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-
-#if 0
-#pragma mark -
-#pragma mark DSP instructions...
-#endif
-
-// DSP instructions...
-void ArmToMips64Assembler::PLD(int Rn __unused, uint32_t offset) {
-    LOG_ALWAYS_FATAL_IF(!((offset&(1<<24)) && !(offset&(1<<21))),
-                        "PLD only P=1, W=0");
-    // *mPC++ = 0xF550F000 | (Rn<<16) | offset;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::CLZ(int cc __unused, int Rd, int Rm)
-{
-    mArmPC[mInum++] = pc();
-    mMips->CLZ(Rd, Rm);
-}
-
-void ArmToMips64Assembler::QADD(int cc __unused, int Rd __unused,
-                                int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1000050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::QDADD(int cc __unused, int Rd __unused,
-                                 int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1400050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::QSUB(int cc __unused, int Rd __unused,
-                                int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1200050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::QDSUB(int cc __unused, int Rd __unused,
-                                 int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1600050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-// 16 x 16 signed multiply (like SMLAxx without the accumulate)
-void ArmToMips64Assembler::SMUL(int cc __unused, int xy,
-                int Rd, int Rm, int Rs)
-{
-    mArmPC[mInum++] = pc();
-
-    // the 16 bits may be in the top or bottom half of 32-bit source reg,
-    // as defined by the codes BB, BT, TB, TT (compressed param xy)
-    // where x corresponds to Rm and y to Rs
-
-    // select half-reg for Rm
-    if (xy & xyTB) {
-        // use top 16-bits
-        mMips->SRA(R_at, Rm, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        mMips->SEH(R_at, Rm);
-    }
-    // select half-reg for Rs
-    if (xy & xyBT) {
-        // use top 16-bits
-        mMips->SRA(R_at2, Rs, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        mMips->SEH(R_at2, Rs);
-    }
-    mMips->MUL(Rd, R_at, R_at2);
-}
-
-// signed 32b x 16b multiple, save top 32-bits of 48-bit result
-void ArmToMips64Assembler::SMULW(int cc __unused, int y,
-                int Rd, int Rm, int Rs)
-{
-    mArmPC[mInum++] = pc();
-
-    // the selector yT or yB refers to reg Rs
-    if (y & yT) {
-        // zero the bottom 16-bits, with 2 shifts, it can affect result
-        mMips->SRL(R_at, Rs, 16);
-        mMips->SLL(R_at, R_at, 16);
-
-    } else {
-        // move low 16-bit half, to high half
-        mMips->SLL(R_at, Rs, 16);
-    }
-    mMips->MUH(Rd, Rm, R_at);
-}
-
-// 16 x 16 signed multiply, accumulate: Rd = Rm{16} * Rs{16} + Rn
-void ArmToMips64Assembler::SMLA(int cc __unused, int xy,
-                int Rd, int Rm, int Rs, int Rn)
-{
-    mArmPC[mInum++] = pc();
-
-    // the 16 bits may be in the top or bottom half of 32-bit source reg,
-    // as defined by the codes BB, BT, TB, TT (compressed param xy)
-    // where x corresponds to Rm and y to Rs
-
-    // select half-reg for Rm
-    if (xy & xyTB) {
-        // use top 16-bits
-        mMips->SRA(R_at, Rm, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        mMips->SEH(R_at, Rm);
-    }
-    // select half-reg for Rs
-    if (xy & xyBT) {
-        // use top 16-bits
-        mMips->SRA(R_at2, Rs, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        mMips->SEH(R_at2, Rs);
-    }
-
-    mMips->MUL(R_at, R_at, R_at2);
-    mMips->ADDU(Rd, R_at, Rn);
-}
-
-void ArmToMips64Assembler::SMLAL(int cc __unused, int xy __unused,
-                                 int RdHi __unused, int RdLo __unused,
-                                 int Rs __unused, int Rm __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1400080 | (RdHi<<16) | (RdLo<<12) | (Rs<<8) | (xy<<4) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMips64Assembler::SMLAW(int cc __unused, int y __unused,
-                                 int Rd __unused, int Rm __unused,
-                                 int Rs __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1200080 | (Rd<<16) | (Rn<<12) | (Rs<<8) | (y<<4) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-// used by ARMv6 version of GGLAssembler::filter32
-void ArmToMips64Assembler::UXTB16(int cc __unused, int Rd, int Rm, int rotate)
-{
-    mArmPC[mInum++] = pc();
-
-    //Rd[31:16] := ZeroExtend((Rm ROR (8 * sh))[23:16]),
-    //Rd[15:0] := ZeroExtend((Rm ROR (8 * sh))[7:0]). sh 0-3.
-
-    mMips->ROTR(R_at2, Rm, rotate * 8);
-    mMips->LUI(R_at, 0xFF);
-    mMips->ORI(R_at, R_at, 0xFF);
-    mMips->AND(Rd, R_at2, R_at);
-}
-
-void ArmToMips64Assembler::UBFX(int cc __unused, int Rd __unused, int Rn __unused,
-                                int lsb __unused, int width __unused)
-{
-     /* Placeholder for UBFX */
-     mArmPC[mInum++] = pc();
-
-     mMips->NOP2();
-     NOT_IMPLEMENTED();
-}
-
-// ----------------------------------------------------------------------------
-// Address Processing...
-// ----------------------------------------------------------------------------
-
-void ArmToMips64Assembler::ADDR_ADD(int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-//    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-//    if(s  != 0) { NOT_IMPLEMENTED(); return;} //Not required
-    dataProcessing(opADD64, cc, s, Rd, Rn, Op2);
-}
-
-void ArmToMips64Assembler::ADDR_SUB(int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-//    if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
-//    if(s  != 0) { NOT_IMPLEMENTED(); return;} //Not required
-    dataProcessing(opSUB64, cc, s, Rd, Rn, Op2);
-}
-
-void ArmToMips64Assembler::ADDR_LDR(int cc __unused, int Rd,
-                                    int Rn, uint32_t offset) {
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;      // convert LDR via Arm SP to LW via Mips SP
-            }
-            mMips->LD(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->DADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;      // convert STR thru Arm SP to STR thru Mips SP
-            }
-            mMips->LD(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->DADDU(R_at, Rn, amode.reg);
-            mMips->LD(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMips64Assembler::ADDR_STR(int cc __unused, int Rd,
-                                    int Rn, uint32_t offset) {
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;  // convert STR thru Arm SP to SW thru Mips SP
-            }
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                // If we will writeback, then update the index reg, then store.
-                // This correctly handles stack-push case.
-                mMips->DADDIU(Rn, Rn, amode.value);
-                mMips->SD(Rd, Rn, 0);
-            } else {
-                // No writeback so store offset by value
-                mMips->SD(Rd, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->SD(Rd, Rn, 0);
-            mMips->DADDIU(Rn, Rn, amode.value);  // post index always writes back
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->DADDU(R_at, Rn, amode.reg);
-            mMips->SD(Rd, R_at, 0);
-            break;
-    }
-}
-
-#if 0
-#pragma mark -
-#pragma mark MIPS Assembler...
-#endif
-
-
-//**************************************************************************
-//**************************************************************************
-//**************************************************************************
-
-
-/* MIPS64 assembler
-** this is a subset of mips64r6, targeted specifically at ARM instruction
-** replacement in the pixelflinger/codeflinger code.
-**
-** This class is extended from MIPSAssembler class and overrides only
-** MIPS64r6 specific stuff.
-*/
-
-MIPS64Assembler::MIPS64Assembler(const sp<Assembly>& assembly, ArmToMips64Assembler *parent)
-    : MIPSAssembler::MIPSAssembler(assembly, NULL), mParent(parent)
-{
-}
-
-MIPS64Assembler::MIPS64Assembler(void* assembly, ArmToMips64Assembler *parent)
-    : MIPSAssembler::MIPSAssembler(assembly), mParent(parent)
-{
-}
-
-MIPS64Assembler::~MIPS64Assembler()
-{
-}
-
-void MIPS64Assembler::reset()
-{
-    if (mAssembly != NULL) {
-        mBase = mPC = (uint32_t *)mAssembly->base();
-    } else {
-        mPC = mBase = base();
-    }
-    mBranchTargets.clear();
-    mLabels.clear();
-    mLabelsInverseMapping.clear();
-    mComments.clear();
-}
-
-
-void MIPS64Assembler::disassemble(const char* name __unused)
-{
-    char di_buf[140];
-
-    bool arm_disasm_fmt = (mParent->mArmDisassemblyBuffer == NULL) ? false : true;
-
-    typedef char dstr[40];
-    dstr *lines = (dstr *)mParent->mArmDisassemblyBuffer;
-
-    if (mParent->mArmDisassemblyBuffer != NULL) {
-        for (int i=0; i<mParent->mArmInstrCount; ++i) {
-            string_detab(lines[i]);
-        }
-    }
-
-    size_t count = pc()-base();
-    uint32_t* mipsPC = base();
-
-    while (count--) {
-        ssize_t label = mLabelsInverseMapping.indexOfKey(mipsPC);
-        if (label >= 0) {
-            ALOGW("%s:\n", mLabelsInverseMapping.valueAt(label));
-        }
-        ssize_t comment = mComments.indexOfKey(mipsPC);
-        if (comment >= 0) {
-            ALOGW("; %s\n", mComments.valueAt(comment));
-        }
-        ::mips_disassem(mipsPC, di_buf, arm_disasm_fmt);
-        string_detab(di_buf);
-        string_pad(di_buf, 30);
-        ALOGW("%08lx:    %08x    %s", uintptr_t(mipsPC), uint32_t(*mipsPC), di_buf);
-        mipsPC++;
-    }
-}
-
-void MIPS64Assembler::fix_branches()
-{
-    // fixup all the branches
-    size_t count = mBranchTargets.size();
-    while (count--) {
-        const branch_target_t& bt = mBranchTargets[count];
-        uint32_t* target_pc = mLabels.valueFor(bt.label);
-        LOG_ALWAYS_FATAL_IF(!target_pc,
-                "error resolving branch targets, target_pc is null");
-        int32_t offset = int32_t(target_pc - (bt.pc+1));
-        *bt.pc |= offset & 0x00FFFF;
-    }
-}
-
-void MIPS64Assembler::DADDU(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (daddu_fn<<FUNC_SHF)
-                    | (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF);
-}
-
-void MIPS64Assembler::DADDIU(int Rt, int Rs, int16_t imm)
-{
-    *mPC++ = (daddiu_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-void MIPS64Assembler::DSUBU(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (dsubu_fn<<FUNC_SHF) |
-                        (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF) ;
-}
-
-void MIPS64Assembler::DSUBIU(int Rt, int Rs, int16_t imm)   // really addiu(d, s, -j)
-{
-    *mPC++ = (daddiu_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | ((-imm) & MSK_16);
-}
-
-void MIPS64Assembler::MUL(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (mul_fn<<RE_SHF) | (sop30_fn<<FUNC_SHF) |
-                        (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF) ;
-}
-
-void MIPS64Assembler::MUH(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (muh_fn<<RE_SHF) | (sop30_fn<<FUNC_SHF) |
-                        (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF) ;
-}
-
-void MIPS64Assembler::CLO(int Rd, int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (17<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (1<<RE_SHF);
-}
-
-void MIPS64Assembler::CLZ(int Rd, int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (16<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (1<<RE_SHF);
-}
-
-void MIPS64Assembler::LD(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (ld_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPS64Assembler::SD(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (sd_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPS64Assembler::LUI(int Rt, int16_t offset)
-{
-    *mPC++ = (aui_op<<OP_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-
-void MIPS64Assembler::JR(int Rs)
-{
-        *mPC++ = (spec_op<<OP_SHF) | (Rs<<RS_SHF) | (jalr_fn << FUNC_SHF);
-        MIPS64Assembler::NOP();
-}
-
-}; // namespace android:
diff --git a/libpixelflinger/codeflinger/MIPS64Assembler.h b/libpixelflinger/codeflinger/MIPS64Assembler.h
deleted file mode 100644
index b43e5da..0000000
--- a/libpixelflinger/codeflinger/MIPS64Assembler.h
+++ /dev/null
@@ -1,404 +0,0 @@
-/* libs/pixelflinger/codeflinger/MIPS64Assembler.h
-**
-** Copyright 2015, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifndef ANDROID_MIPS64ASSEMBLER_H
-#define ANDROID_MIPS64ASSEMBLER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "utils/KeyedVector.h"
-#include "utils/Vector.h"
-#include "tinyutils/smartpointer.h"
-
-#include "ARMAssemblerInterface.h"
-#include "MIPSAssembler.h"
-#include "CodeCache.h"
-
-namespace android {
-
-class MIPS64Assembler;    // forward reference
-
-// this class mimics ARMAssembler interface
-// intent is to translate each ARM instruction to 1 or more MIPS instr
-// implementation calls MIPS64Assembler class to generate mips code
-class ArmToMips64Assembler : public ARMAssemblerInterface
-{
-public:
-                ArmToMips64Assembler(const sp<Assembly>& assembly,
-                        char *abuf = 0, int linesz = 0, int instr_count = 0);
-                ArmToMips64Assembler(void* assembly);
-    virtual     ~ArmToMips64Assembler();
-
-    uint32_t*   base() const;
-    uint32_t*   pc() const;
-    void        disassemble(const char* name);
-
-    virtual void    reset();
-
-    virtual int     generate(const char* name);
-    virtual int     getCodegenArch();
-
-    virtual void    prolog();
-    virtual void    epilog(uint32_t touched);
-    virtual void    comment(const char* string);
-    // for testing purposes
-    void        fix_branches();
-    void        set_condition(int mode, int R1, int R2);
-
-
-    // -----------------------------------------------------------------------
-    // shifters and addressing modes
-    // -----------------------------------------------------------------------
-
-    // shifters...
-    virtual bool        isValidImmediate(uint32_t immed);
-    virtual int         buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm);
-
-    virtual uint32_t    imm(uint32_t immediate);
-    virtual uint32_t    reg_imm(int Rm, int type, uint32_t shift);
-    virtual uint32_t    reg_rrx(int Rm);
-    virtual uint32_t    reg_reg(int Rm, int type, int Rs);
-
-    // addressing modes...
-    // LDR(B)/STR(B)/PLD
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed12_pre(int32_t immed12, int W=0);
-    virtual uint32_t    immed12_post(int32_t immed12);
-    virtual uint32_t    reg_scale_pre(int Rm, int type=0, uint32_t shift=0, int W=0);
-    virtual uint32_t    reg_scale_post(int Rm, int type=0, uint32_t shift=0);
-
-    // LDRH/LDRSB/LDRSH/STRH
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed8_pre(int32_t immed8, int W=0);
-    virtual uint32_t    immed8_post(int32_t immed8);
-    virtual uint32_t    reg_pre(int Rm, int W=0);
-    virtual uint32_t    reg_post(int Rm);
-
-
-
-
-    virtual void    dataProcessing(int opcode, int cc, int s,
-                                int Rd, int Rn,
-                                uint32_t Op2);
-    virtual void MLA(int cc, int s,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void MUL(int cc, int s,
-                int Rd, int Rm, int Rs);
-    virtual void UMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void UMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-
-    virtual void B(int cc, uint32_t* pc);
-    virtual void BL(int cc, uint32_t* pc);
-    virtual void BX(int cc, int Rn);
-    virtual void label(const char* theLabel);
-    virtual void B(int cc, const char* label);
-    virtual void BL(int cc, const char* label);
-
-    virtual uint32_t* pcForLabel(const char* label);
-
-    virtual void LDR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STRB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRH (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRSB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRSH(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STRH (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-
-    virtual void LDM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-    virtual void STM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-
-    virtual void SWP(int cc, int Rn, int Rd, int Rm);
-    virtual void SWPB(int cc, int Rn, int Rd, int Rm);
-    virtual void SWI(int cc, uint32_t comment);
-
-    virtual void PLD(int Rn, uint32_t offset);
-    virtual void CLZ(int cc, int Rd, int Rm);
-    virtual void QADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QDADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void QDSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs);
-    virtual void SMULW(int cc, int y,
-                int Rd, int Rm, int Rs);
-    virtual void SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm);
-    virtual void SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn);
-
-    // byte/half word extract...
-    virtual void UXTB16(int cc, int Rd, int Rm, int rotate);
-
-    // bit manipulation...
-    virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width);
-
-    // Address loading/storing/manipulation
-    virtual void ADDR_LDR(int cc, int Rd, int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void ADDR_STR(int cc, int Rd, int Rn, uint32_t offset = __immed12_pre(0));
-    virtual void ADDR_ADD(int cc, int s, int Rd, int Rn, uint32_t Op2);
-    virtual void ADDR_SUB(int cc, int s, int Rd, int Rn, uint32_t Op2);
-
-    // this is some crap to share is MIPS64Assembler class for debug
-    char *      mArmDisassemblyBuffer;
-    int         mArmLineLength;
-    int         mArmInstrCount;
-
-    int         mInum;      // current arm instuction number (0..n)
-    uint32_t**  mArmPC;     // array: PC for 1st mips instr of
-                            //      each translated ARM instr
-
-
-private:
-    ArmToMips64Assembler(const ArmToMips64Assembler& rhs);
-    ArmToMips64Assembler& operator = (const ArmToMips64Assembler& rhs);
-
-    void init_conditional_labels(void);
-
-    void protectConditionalOperands(int Rd);
-
-    // reg__tmp set to MIPS AT, reg 1
-    int dataProcAdrModes(int op, int& source, bool sign = false, int reg_tmp = 1);
-
-    sp<Assembly>        mAssembly;
-    MIPS64Assembler*    mMips;
-
-
-    enum misc_constants_t {
-        ARM_MAX_INSTUCTIONS = 512  // based on ASSEMBLY_SCRATCH_SIZE
-    };
-
-    enum {
-        SRC_REG = 0,
-        SRC_IMM,
-        SRC_ERROR = -1
-    };
-
-    enum addr_modes {
-        // start above the range of legal mips reg #'s (0-31)
-        AMODE_REG = 0x20,
-        AMODE_IMM, AMODE_REG_IMM,               // for data processing
-        AMODE_IMM_12_PRE, AMODE_IMM_12_POST,    // for load/store
-        AMODE_REG_SCALE_PRE, AMODE_IMM_8_PRE,
-        AMODE_IMM_8_POST, AMODE_REG_PRE,
-        AMODE_UNSUPPORTED
-    };
-
-    struct addr_mode_t {    // address modes for current ARM instruction
-        int         reg;
-        int         stype;
-        uint32_t    value;
-        bool        writeback;  // writeback the adr reg after modification
-    } amode;
-
-    enum cond_types {
-        CMP_COND = 1,
-        SBIT_COND
-    };
-
-    struct cond_mode_t {    // conditional-execution info for current ARM instruction
-        cond_types  type;
-        int         r1;
-        int         r2;
-        int         labelnum;
-        char        label[100][10];
-    } cond;
-};
-
-
-
-
-// ----------------------------------------------------------------------------
-// ----------------------------------------------------------------------------
-// ----------------------------------------------------------------------------
-
-// This is the basic MIPS64 assembler, which just creates the opcodes in memory.
-// All the more complicated work is done in ArmToMips64Assember above.
-// Inherits MIPSAssembler class, and overrides only MIPS64r6 specific stuff
-
-class MIPS64Assembler : public MIPSAssembler
-{
-public:
-                MIPS64Assembler(const sp<Assembly>& assembly, ArmToMips64Assembler *parent);
-                MIPS64Assembler(void* assembly, ArmToMips64Assembler *parent);
-    virtual     ~MIPS64Assembler();
-
-    virtual void        reset();
-    virtual void        disassemble(const char* name);
-
-    void        fix_branches();
-
-    // ------------------------------------------------------------------------
-    // MIPS64AssemblerInterface...
-    // ------------------------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Arithmetic...
-#endif
-
-    void DADDU(int Rd, int Rs, int Rt);
-    void DADDIU(int Rt, int Rs, int16_t imm);
-    void DSUBU(int Rd, int Rs, int Rt);
-    void DSUBIU(int Rt, int Rs, int16_t imm);
-    virtual void MUL(int Rd, int Rs, int Rt);
-    void MUH(int Rd, int Rs, int Rt);
-
-#if 0
-#pragma mark -
-#pragma mark Logical...
-#endif
-
-    virtual void CLO(int Rd, int Rs);
-    virtual void CLZ(int Rd, int Rs);
-
-#if 0
-#pragma mark -
-#pragma mark Load/store...
-#endif
-
-    void LD(int Rt, int Rbase, int16_t offset);
-    void SD(int Rt, int Rbase, int16_t offset);
-    virtual void LUI(int Rt, int16_t offset);
-
-#if 0
-#pragma mark -
-#pragma mark Branch...
-#endif
-
-    void JR(int Rs);
-
-
-protected:
-    ArmToMips64Assembler *mParent;
-
-    // opcode field of all instructions
-    enum opcode_field {
-        spec_op, regimm_op, j_op, jal_op,                  // 0x00 - 0x03
-        beq_op, bne_op, pop06_op, pop07_op,                // 0x04 - 0x07
-        pop10_op, addiu_op, slti_op, sltiu_op,             // 0x08 - 0x0b
-        andi_op, ori_op, xori_op, aui_op,                  // 0x0c - 0x0f
-        cop0_op, cop1_op, cop2_op, rsrv_opc_0,             // 0x10 - 0x13
-        rsrv_opc_1, rsrv_opc_2, pop26_op, pop27_op,        // 0x14 - 0x17
-        pop30_op, daddiu_op, rsrv_opc_3, rsrv_opc_4,       // 0x18 - 0x1b
-        rsrv_opc_5, daui_op, msa_op, spec3_op,             // 0x1c - 0x1f
-        lb_op, lh_op, rsrv_opc_6, lw_op,                   // 0x20 - 0x23
-        lbu_op, lhu_op, rsrv_opc_7, lwu_op,                // 0x24 - 0x27
-        sb_op, sh_op, rsrv_opc_8, sw_op,                   // 0x28 - 0x2b
-        rsrv_opc_9, rsrv_opc_10, rsrv_opc_11, rsrv_opc_12, // 0x2c - 0x2f
-        rsrv_opc_13, lwc1_op, bc_op, rsrv_opc_14,          // 0x2c - 0x2f
-        rsrv_opc_15, ldc1_op, pop66_op, ld_op,             // 0x30 - 0x33
-        rsrv_opc_16, swc1_op, balc_op, pcrel_op,           // 0x34 - 0x37
-        rsrv_opc_17, sdc1_op, pop76_op, sd_op              // 0x38 - 0x3b
-    };
-
-
-    // func field for special opcode
-    enum func_spec_op {
-        sll_fn, rsrv_spec_0, srl_fn, sra_fn,
-        sllv_fn, lsa_fn, srlv_fn, srav_fn,
-        rsrv_spec_1, jalr_fn, rsrv_spec_2, rsrv_spec_3,
-        syscall_fn, break_fn, sdbbp_fn, sync_fn,
-        clz_fn, clo_fn, dclz_fn, dclo_fn,
-        dsllv_fn, dlsa_fn, dsrlv_fn, dsrav_fn,
-        sop30_fn, sop31_fn, sop32_fn, sop33_fn,
-        sop34_fn, sop35_fn, sop36_fn, sop37_fn,
-        add_fn, addu_fn, sub_fn, subu_fn,
-        and_fn, or_fn, xor_fn, nor_fn,
-        rsrv_spec_4, rsrv_spec_5, slt_fn, sltu_fn,
-        dadd_fn, daddu_fn, dsub_fn, dsubu_fn,
-        tge_fn, tgeu_fn, tlt_fn, tltu_fn,
-        teq_fn, seleqz_fn, tne_fn, selnez_fn,
-        dsll_fn, rsrv_spec_6, dsrl_fn, dsra_fn,
-        dsll32_fn, rsrv_spec_7, dsrl32_fn, dsra32_fn
-    };
-
-    // func field for spec3 opcode
-    enum func_spec3_op {
-        ext_fn, dextm_fn, dextu_fn, dext_fn,
-        ins_fn, dinsm_fn, dinsu_fn, dins_fn,
-        cachee_fn = 0x1b, sbe_fn, she_fn, sce_fn, swe_fn,
-        bshfl_fn, prefe_fn = 0x23, dbshfl_fn, cache_fn, sc_fn, scd_fn,
-        lbue_fn, lhue_fn, lbe_fn = 0x2c, lhe_fn, lle_fn, lwe_fn,
-        pref_fn = 0x35, ll_fn, lld_fn, rdhwr_fn = 0x3b
-    };
-
-    // sa field for spec3 opcodes, with BSHFL function
-    enum func_spec3_bshfl {
-        bitswap_fn,
-        wsbh_fn = 0x02,
-        dshd_fn = 0x05,
-        seb_fn = 0x10,
-        seh_fn = 0x18
-    };
-
-    // rt field of regimm opcodes.
-    enum regimm_fn {
-        bltz_fn, bgez_fn,
-        dahi_fn = 0x6,
-        nal_fn = 0x10, bal_fn, bltzall_fn, bgezall_fn,
-        sigrie_fn = 0x17,
-        dati_fn = 0x1e, synci_fn
-    };
-
-    enum muldiv_fn {
-        mul_fn = 0x02, muh_fn
-    };
-
-    enum mips_inst_shifts {
-        OP_SHF       = 26,
-        JTARGET_SHF  = 0,
-        RS_SHF       = 21,
-        RT_SHF       = 16,
-        RD_SHF       = 11,
-        RE_SHF       = 6,
-        SA_SHF       = RE_SHF,  // synonym
-        IMM_SHF      = 0,
-        FUNC_SHF     = 0,
-
-        // mask values
-        MSK_16       = 0xffff,
-
-
-        CACHEOP_SHF  = 18,
-        CACHESEL_SHF = 16,
-    };
-};
-
-
-}; // namespace android
-
-#endif //ANDROID_MIPS64ASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/MIPSAssembler.cpp b/libpixelflinger/codeflinger/MIPSAssembler.cpp
deleted file mode 100644
index 7de8cc1..0000000
--- a/libpixelflinger/codeflinger/MIPSAssembler.cpp
+++ /dev/null
@@ -1,1955 +0,0 @@
-/* libs/pixelflinger/codeflinger/MIPSAssembler.cpp
-**
-** Copyright 2012, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-
-/* MIPS assembler and ARM->MIPS assembly translator
-**
-** The approach is to leave the GGLAssembler and associated files largely
-** un-changed, still utilizing all Arm instruction generation. Via the
-** ArmToMipsAssembler (subclassed from ArmAssemblerInterface) each Arm
-** instruction is translated to one or more Mips instructions as necessary. This
-** is clearly less efficient than a direct implementation within the
-** GGLAssembler, but is far cleaner, more maintainable, and has yielded very
-** significant performance gains on Mips compared to the generic pixel pipeline.
-**
-**
-** GGLAssembler changes
-**
-** - The register allocator has been modified to re-map Arm registers 0-15 to mips
-** registers 2-17. Mips register 0 cannot be used as general-purpose register,
-** and register 1 has traditional uses as a short-term temporary.
-**
-** - Added some early bailouts for OUT_OF_REGISTERS in texturing.cpp and
-** GGLAssembler.cpp, since this is not fatal, and can be retried at lower
-** optimization level.
-**
-**
-** ARMAssembler and ARMAssemblerInterface changes
-**
-** Refactored ARM address-mode static functions (imm(), reg_imm(), imm12_pre(), etc.)
-** to virtual, so they can be overridden in MIPSAssembler. The implementation of these
-** functions on ARM is moved from ARMAssemblerInterface.cpp to ARMAssembler.cpp, and
-** is unchanged from the original. (This required duplicating 2 of these as static
-** functions in ARMAssemblerInterface.cpp so they could be used as static initializers).
-*/
-
-#define LOG_TAG "MIPSAssembler"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <inttypes.h>
-
-#include <cutils/properties.h>
-#include <log/log.h>
-#include <private/pixelflinger/ggl_context.h>
-
-#include "CodeCache.h"
-#include "MIPSAssembler.h"
-#include "mips_disassem.h"
-
-#define __unused __attribute__((__unused__))
-
-// Choose MIPS arch variant following gcc flags
-#if defined(__mips__) && __mips==32 && __mips_isa_rev>=2
-#define mips32r2 1
-#else
-#define mips32r2 0
-#endif
-
-
-#define NOT_IMPLEMENTED()  LOG_ALWAYS_FATAL("Arm instruction %s not yet implemented\n", __func__)
-
-
-
-// ----------------------------------------------------------------------------
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark ArmToMipsAssembler...
-#endif
-
-ArmToMipsAssembler::ArmToMipsAssembler(const sp<Assembly>& assembly,
-                                       char *abuf, int linesz, int instr_count)
-    :   ARMAssemblerInterface(),
-        mArmDisassemblyBuffer(abuf),
-        mArmLineLength(linesz),
-        mArmInstrCount(instr_count),
-        mInum(0),
-        mAssembly(assembly)
-{
-    mMips = new MIPSAssembler(assembly, this);
-    mArmPC = (uint32_t **) malloc(ARM_MAX_INSTUCTIONS * sizeof(uint32_t *));
-    init_conditional_labels();
-}
-
-ArmToMipsAssembler::~ArmToMipsAssembler()
-{
-    delete mMips;
-    free((void *) mArmPC);
-}
-
-uint32_t* ArmToMipsAssembler::pc() const
-{
-    return mMips->pc();
-}
-
-uint32_t* ArmToMipsAssembler::base() const
-{
-    return mMips->base();
-}
-
-void ArmToMipsAssembler::reset()
-{
-    cond.labelnum = 0;
-    mInum = 0;
-    mMips->reset();
-}
-
-int ArmToMipsAssembler::getCodegenArch()
-{
-    return CODEGEN_ARCH_MIPS;
-}
-
-void ArmToMipsAssembler::comment(const char* string)
-{
-    mMips->comment(string);
-}
-
-void ArmToMipsAssembler::label(const char* theLabel)
-{
-    mMips->label(theLabel);
-}
-
-void ArmToMipsAssembler::disassemble(const char* name)
-{
-    mMips->disassemble(name);
-}
-
-void ArmToMipsAssembler::init_conditional_labels()
-{
-    int i;
-    for (i=0;i<99; ++i) {
-        sprintf(cond.label[i], "cond_%d", i);
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Prolog/Epilog & Generate...
-#endif
-
-void ArmToMipsAssembler::prolog()
-{
-    mArmPC[mInum++] = pc();  // save starting PC for this instr
-
-    mMips->ADDIU(R_sp, R_sp, -(5 * 4));
-    mMips->SW(R_s0, R_sp, 0);
-    mMips->SW(R_s1, R_sp, 4);
-    mMips->SW(R_s2, R_sp, 8);
-    mMips->SW(R_s3, R_sp, 12);
-    mMips->SW(R_s4, R_sp, 16);
-    mMips->MOVE(R_v0, R_a0);    // move context * passed in a0 to v0 (arm r0)
-}
-
-void ArmToMipsAssembler::epilog(uint32_t touched __unused)
-{
-    mArmPC[mInum++] = pc();  // save starting PC for this instr
-
-    mMips->LW(R_s0, R_sp, 0);
-    mMips->LW(R_s1, R_sp, 4);
-    mMips->LW(R_s2, R_sp, 8);
-    mMips->LW(R_s3, R_sp, 12);
-    mMips->LW(R_s4, R_sp, 16);
-    mMips->ADDIU(R_sp, R_sp, (5 * 4));
-    mMips->JR(R_ra);
-
-}
-
-int ArmToMipsAssembler::generate(const char* name)
-{
-    return mMips->generate(name);
-}
-
-uint32_t* ArmToMipsAssembler::pcForLabel(const char* label)
-{
-    return mMips->pcForLabel(label);
-}
-
-
-
-//----------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Addressing modes & shifters...
-#endif
-
-
-// do not need this for MIPS, but it is in the Interface (virtual)
-int ArmToMipsAssembler::buildImmediate(
-        uint32_t immediate, uint32_t& rot, uint32_t& imm)
-{
-    // for MIPS, any 32-bit immediate is OK
-    rot = 0;
-    imm = immediate;
-    return 0;
-}
-
-// shifters...
-
-bool ArmToMipsAssembler::isValidImmediate(uint32_t immediate __unused)
-{
-    // for MIPS, any 32-bit immediate is OK
-    return true;
-}
-
-uint32_t ArmToMipsAssembler::imm(uint32_t immediate)
-{
-    // ALOGW("immediate value %08x at pc %08x\n", immediate, (int)pc());
-    amode.value = immediate;
-    return AMODE_IMM;
-}
-
-uint32_t ArmToMipsAssembler::reg_imm(int Rm, int type, uint32_t shift)
-{
-    amode.reg = Rm;
-    amode.stype = type;
-    amode.value = shift;
-    return AMODE_REG_IMM;
-}
-
-uint32_t ArmToMipsAssembler::reg_rrx(int Rm __unused)
-{
-    // reg_rrx mode is not used in the GLLAssember code at this time
-    return AMODE_UNSUPPORTED;
-}
-
-uint32_t ArmToMipsAssembler::reg_reg(int Rm __unused, int type __unused,
-                                     int Rs __unused)
-{
-    // reg_reg mode is not used in the GLLAssember code at this time
-    return AMODE_UNSUPPORTED;
-}
-
-
-// addressing modes...
-// LDR(B)/STR(B)/PLD (immediate and Rm can be negative, which indicate U=0)
-uint32_t ArmToMipsAssembler::immed12_pre(int32_t immed12, int W)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-    amode.value = immed12;
-    amode.writeback = W;
-    return AMODE_IMM_12_PRE;
-}
-
-uint32_t ArmToMipsAssembler::immed12_post(int32_t immed12)
-{
-    LOG_ALWAYS_FATAL_IF(abs(immed12) >= 0x800,
-                        "LDR(B)/STR(B)/PLD immediate too big (%08x)",
-                        immed12);
-
-    amode.value = immed12;
-    return AMODE_IMM_12_POST;
-}
-
-uint32_t ArmToMipsAssembler::reg_scale_pre(int Rm, int type,
-        uint32_t shift, int W)
-{
-    LOG_ALWAYS_FATAL_IF(W | type | shift, "reg_scale_pre adv modes not yet implemented");
-
-    amode.reg = Rm;
-    // amode.stype = type;      // more advanced modes not used in GGLAssembler yet
-    // amode.value = shift;
-    // amode.writeback = W;
-    return AMODE_REG_SCALE_PRE;
-}
-
-uint32_t ArmToMipsAssembler::reg_scale_post(int Rm __unused, int type __unused,
-                                            uint32_t shift __unused)
-{
-    LOG_ALWAYS_FATAL("adr mode reg_scale_post not yet implemented\n");
-    return AMODE_UNSUPPORTED;
-}
-
-// LDRH/LDRSB/LDRSH/STRH (immediate and Rm can be negative, which indicate U=0)
-uint32_t ArmToMipsAssembler::immed8_pre(int32_t immed8, int W __unused)
-{
-    // uint32_t offset = abs(immed8);
-
-    LOG_ALWAYS_FATAL("adr mode immed8_pre not yet implemented\n");
-
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-    return AMODE_IMM_8_PRE;
-}
-
-uint32_t ArmToMipsAssembler::immed8_post(int32_t immed8)
-{
-    // uint32_t offset = abs(immed8);
-
-    LOG_ALWAYS_FATAL_IF(abs(immed8) >= 0x100,
-                        "LDRH/LDRSB/LDRSH/STRH immediate too big (%08x)",
-                        immed8);
-    amode.value = immed8;
-    return AMODE_IMM_8_POST;
-}
-
-uint32_t ArmToMipsAssembler::reg_pre(int Rm, int W)
-{
-    LOG_ALWAYS_FATAL_IF(W, "reg_pre writeback not yet implemented");
-    amode.reg = Rm;
-    return AMODE_REG_PRE;
-}
-
-uint32_t ArmToMipsAssembler::reg_post(int Rm __unused)
-{
-    LOG_ALWAYS_FATAL("adr mode reg_post not yet implemented\n");
-    return AMODE_UNSUPPORTED;
-}
-
-
-
-// ----------------------------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Data Processing...
-#endif
-
-// check if the operand registers from a previous CMP or S-bit instruction
-// would be overwritten by this instruction. If so, move the value to a
-// safe register.
-// Note that we cannot tell at _this_ instruction time if a future (conditional)
-// instruction will _also_ use this value (a defect of the simple 1-pass, one-
-// instruction-at-a-time translation). Therefore we must be conservative and
-// save the value before it is overwritten. This costs an extra MOVE instr.
-
-void ArmToMipsAssembler::protectConditionalOperands(int Rd)
-{
-    if (Rd == cond.r1) {
-        mMips->MOVE(R_cmp, cond.r1);
-        cond.r1 = R_cmp;
-    }
-    if (cond.type == CMP_COND && Rd == cond.r2) {
-        mMips->MOVE(R_cmp2, cond.r2);
-        cond.r2 = R_cmp2;
-    }
-}
-
-
-// interprets the addressing mode, and generates the common code
-// used by the majority of data-processing ops. Many MIPS instructions
-// have a register-based form and a different immediate form. See
-// opAND below for an example. (this could be inlined)
-//
-// this works with the imm(), reg_imm() methods above, which are directly
-// called by the GLLAssembler.
-// note: _signed parameter defaults to false (un-signed)
-// note: tmpReg parameter defaults to 1, MIPS register AT
-int ArmToMipsAssembler::dataProcAdrModes(int op, int& source, bool _signed, int tmpReg)
-{
-    if (op < AMODE_REG) {
-        source = op;
-        return SRC_REG;
-    } else if (op == AMODE_IMM) {
-        if ((!_signed && amode.value > 0xffff)
-                || (_signed && ((int)amode.value < -32768 || (int)amode.value > 32767) )) {
-            mMips->LUI(tmpReg, (amode.value >> 16));
-            if (amode.value & 0x0000ffff) {
-                mMips->ORI(tmpReg, tmpReg, (amode.value & 0x0000ffff));
-            }
-            source = tmpReg;
-            return SRC_REG;
-        } else {
-            source = amode.value;
-            return SRC_IMM;
-        }
-    } else if (op == AMODE_REG_IMM) {
-        switch (amode.stype) {
-            case LSL: mMips->SLL(tmpReg, amode.reg, amode.value); break;
-            case LSR: mMips->SRL(tmpReg, amode.reg, amode.value); break;
-            case ASR: mMips->SRA(tmpReg, amode.reg, amode.value); break;
-            case ROR: if (mips32r2) {
-                          mMips->ROTR(tmpReg, amode.reg, amode.value);
-                      } else {
-                          mMips->RORIsyn(tmpReg, amode.reg, amode.value);
-                      }
-                      break;
-        }
-        source = tmpReg;
-        return SRC_REG;
-    } else {  // adr mode RRX is not used in GGL Assembler at this time
-        // we are screwed, this should be exception, assert-fail or something
-        LOG_ALWAYS_FATAL("adr mode reg_rrx not yet implemented\n");
-        return SRC_ERROR;
-    }
-}
-
-
-void ArmToMipsAssembler::dataProcessing(int opcode, int cc,
-        int s, int Rd, int Rn, uint32_t Op2)
-{
-    int src;    // src is modified by dataProcAdrModes() - passed as int&
-
-
-    if (cc != AL) {
-        protectConditionalOperands(Rd);
-        // the branch tests register(s) set by prev CMP or instr with 'S' bit set
-        // inverse the condition to jump past this conditional instruction
-        ArmToMipsAssembler::B(cc^1, cond.label[++cond.labelnum]);
-    } else {
-        mArmPC[mInum++] = pc();  // save starting PC for this instr
-    }
-
-    switch (opcode) {
-    case opAND:
-        if (dataProcAdrModes(Op2, src) == SRC_REG) {
-            mMips->AND(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->ANDI(Rd, Rn, src);
-        }
-        break;
-
-    case opADD:
-        // set "signed" to true for adr modes
-        if (dataProcAdrModes(Op2, src, true) == SRC_REG) {
-            mMips->ADDU(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->ADDIU(Rd, Rn, src);
-        }
-        break;
-
-    case opSUB:
-        // set "signed" to true for adr modes
-        if (dataProcAdrModes(Op2, src, true) == SRC_REG) {
-            mMips->SUBU(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->SUBIU(Rd, Rn, src);
-        }
-        break;
-
-    case opEOR:
-        if (dataProcAdrModes(Op2, src) == SRC_REG) {
-            mMips->XOR(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->XORI(Rd, Rn, src);
-        }
-        break;
-
-    case opORR:
-        if (dataProcAdrModes(Op2, src) == SRC_REG) {
-            mMips->OR(Rd, Rn, src);
-        } else {                        // adr mode was SRC_IMM
-            mMips->ORI(Rd, Rn, src);
-        }
-        break;
-
-    case opBIC:
-        if (dataProcAdrModes(Op2, src) == SRC_IMM) {
-            // if we are 16-bit imnmediate, load to AT reg
-            mMips->ORI(R_at, 0, src);
-            src = R_at;
-        }
-        mMips->NOT(R_at, src);
-        mMips->AND(Rd, Rn, R_at);
-        break;
-
-    case opRSB:
-        if (dataProcAdrModes(Op2, src) == SRC_IMM) {
-            // if we are 16-bit imnmediate, load to AT reg
-            mMips->ORI(R_at, 0, src);
-            src = R_at;
-        }
-        mMips->SUBU(Rd, src, Rn);   // subu with the parameters reversed
-        break;
-
-    case opMOV:
-        if (Op2 < AMODE_REG) {  // op2 is reg # in this case
-            mMips->MOVE(Rd, Op2);
-        } else if (Op2 == AMODE_IMM) {
-            if (amode.value > 0xffff) {
-                mMips->LUI(Rd, (amode.value >> 16));
-                if (amode.value & 0x0000ffff) {
-                    mMips->ORI(Rd, Rd, (amode.value & 0x0000ffff));
-                }
-             } else {
-                mMips->ORI(Rd, 0, amode.value);
-            }
-        } else if (Op2 == AMODE_REG_IMM) {
-            switch (amode.stype) {
-            case LSL: mMips->SLL(Rd, amode.reg, amode.value); break;
-            case LSR: mMips->SRL(Rd, amode.reg, amode.value); break;
-            case ASR: mMips->SRA(Rd, amode.reg, amode.value); break;
-            case ROR: if (mips32r2) {
-                          mMips->ROTR(Rd, amode.reg, amode.value);
-                      } else {
-                          mMips->RORIsyn(Rd, amode.reg, amode.value);
-                      }
-                      break;
-            }
-        }
-        else {
-            // adr mode RRX is not used in GGL Assembler at this time
-            mMips->UNIMPL();
-        }
-        break;
-
-    case opMVN:     // this is a 1's complement: NOT
-        if (Op2 < AMODE_REG) {  // op2 is reg # in this case
-            mMips->NOR(Rd, Op2, 0);     // NOT is NOR with 0
-            break;
-        } else if (Op2 == AMODE_IMM) {
-            if (amode.value > 0xffff) {
-                mMips->LUI(Rd, (amode.value >> 16));
-                if (amode.value & 0x0000ffff) {
-                    mMips->ORI(Rd, Rd, (amode.value & 0x0000ffff));
-                }
-             } else {
-                mMips->ORI(Rd, 0, amode.value);
-             }
-        } else if (Op2 == AMODE_REG_IMM) {
-            switch (amode.stype) {
-            case LSL: mMips->SLL(Rd, amode.reg, amode.value); break;
-            case LSR: mMips->SRL(Rd, amode.reg, amode.value); break;
-            case ASR: mMips->SRA(Rd, amode.reg, amode.value); break;
-            case ROR: if (mips32r2) {
-                          mMips->ROTR(Rd, amode.reg, amode.value);
-                      } else {
-                          mMips->RORIsyn(Rd, amode.reg, amode.value);
-                      }
-                      break;
-            }
-        }
-        else {
-            // adr mode RRX is not used in GGL Assembler at this time
-            mMips->UNIMPL();
-        }
-        mMips->NOR(Rd, Rd, 0);     // NOT is NOR with 0
-        break;
-
-    case opCMP:
-        // Either operand of a CMP instr could get overwritten by a subsequent
-        // conditional instruction, which is ok, _UNLESS_ there is a _second_
-        // conditional instruction. Under MIPS, this requires doing the comparison
-        // again (SLT), and the original operands must be available. (and this
-        // pattern of multiple conditional instructions from same CMP _is_ used
-        // in GGL-Assembler)
-        //
-        // For now, if a conditional instr overwrites the operands, we will
-        // move them to dedicated temp regs. This is ugly, and inefficient,
-        // and should be optimized.
-        //
-        // WARNING: making an _Assumption_ that CMP operand regs will NOT be
-        // trashed by intervening NON-conditional instructions. In the general
-        // case this is legal, but it is NOT currently done in GGL-Assembler.
-
-        cond.type = CMP_COND;
-        cond.r1 = Rn;
-        if (dataProcAdrModes(Op2, src, false, R_cmp2) == SRC_REG) {
-            cond.r2 = src;
-        } else {                        // adr mode was SRC_IMM
-            mMips->ORI(R_cmp2, R_zero, src);
-            cond.r2 = R_cmp2;
-        }
-
-        break;
-
-
-    case opTST:
-    case opTEQ:
-    case opCMN:
-    case opADC:
-    case opSBC:
-    case opRSC:
-        mMips->UNIMPL(); // currently unused in GGL Assembler code
-        break;
-    }
-
-    if (cc != AL) {
-        mMips->label(cond.label[cond.labelnum]);
-    }
-    if (s && opcode != opCMP) {
-        cond.type = SBIT_COND;
-        cond.r1 = Rd;
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Multiply...
-#endif
-
-// multiply, accumulate
-void ArmToMipsAssembler::MLA(int cc __unused, int s,
-        int Rd, int Rm, int Rs, int Rn) {
-
-    mArmPC[mInum++] = pc();  // save starting PC for this instr
-
-    mMips->MUL(R_at, Rm, Rs);
-    mMips->ADDU(Rd, R_at, Rn);
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = Rd;
-    }
-}
-
-void ArmToMipsAssembler::MUL(int cc __unused, int s,
-        int Rd, int Rm, int Rs) {
-    mArmPC[mInum++] = pc();
-    mMips->MUL(Rd, Rm, Rs);
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = Rd;
-    }
-}
-
-void ArmToMipsAssembler::UMULL(int cc __unused, int s,
-        int RdLo, int RdHi, int Rm, int Rs) {
-    mArmPC[mInum++] = pc();
-    mMips->MULT(Rm, Rs);
-    mMips->MFHI(RdHi);
-    mMips->MFLO(RdLo);
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on UMULL must be on 64-bit result\n");
-    }
-}
-
-void ArmToMipsAssembler::UMUAL(int cc __unused, int s,
-        int RdLo __unused, int RdHi, int Rm __unused, int Rs __unused) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "UMUAL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    // *mPC++ =    (cc<<28) | (1<<23) | (1<<21) | (s<<20) |
-    //             (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on UMULL must be on 64-bit result\n");
-    }
-}
-
-void ArmToMipsAssembler::SMULL(int cc __unused, int s,
-        int RdLo __unused, int RdHi, int Rm __unused, int Rs __unused) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "SMULL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    // *mPC++ =    (cc<<28) | (1<<23) | (1<<22) | (s<<20) |
-    //             (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on SMULL must be on 64-bit result\n");
-    }
-}
-void ArmToMipsAssembler::SMUAL(int cc __unused, int s,
-        int RdLo __unused, int RdHi, int Rm __unused, int Rs __unused) {
-    LOG_FATAL_IF(RdLo==Rm || RdHi==Rm || RdLo==RdHi,
-                        "SMUAL(r%u,r%u,r%u,r%u)", RdLo,RdHi,Rm,Rs);
-    // *mPC++ =    (cc<<28) | (1<<23) | (1<<22) | (1<<21) | (s<<20) |
-    //             (RdHi<<16) | (RdLo<<12) | (Rs<<8) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-    if (s) {
-        cond.type = SBIT_COND;
-        cond.r1 = RdHi;     // BUG...
-        LOG_ALWAYS_FATAL("Condition on SMUAL must be on 64-bit result\n");
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Branches...
-#endif
-
-// branches...
-
-void ArmToMipsAssembler::B(int cc, const char* label)
-{
-    mArmPC[mInum++] = pc();
-    if (cond.type == SBIT_COND) { cond.r2 = R_zero; }
-
-    switch(cc) {
-        case EQ: mMips->BEQ(cond.r1, cond.r2, label); break;
-        case NE: mMips->BNE(cond.r1, cond.r2, label); break;
-        case HS: mMips->BGEU(cond.r1, cond.r2, label); break;
-        case LO: mMips->BLTU(cond.r1, cond.r2, label); break;
-        case MI: mMips->BLT(cond.r1, cond.r2, label); break;
-        case PL: mMips->BGE(cond.r1, cond.r2, label); break;
-
-        case HI: mMips->BGTU(cond.r1, cond.r2, label); break;
-        case LS: mMips->BLEU(cond.r1, cond.r2, label); break;
-        case GE: mMips->BGE(cond.r1, cond.r2, label); break;
-        case LT: mMips->BLT(cond.r1, cond.r2, label); break;
-        case GT: mMips->BGT(cond.r1, cond.r2, label); break;
-        case LE: mMips->BLE(cond.r1, cond.r2, label); break;
-        case AL: mMips->B(label); break;
-        case NV: /* B Never - no instruction */ break;
-
-        case VS:
-        case VC:
-        default:
-            LOG_ALWAYS_FATAL("Unsupported cc: %02x\n", cc);
-            break;
-    }
-}
-
-void ArmToMipsAssembler::BL(int cc __unused, const char* label __unused)
-{
-    LOG_ALWAYS_FATAL("branch-and-link not supported yet\n");
-    mArmPC[mInum++] = pc();
-}
-
-// no use for Branches with integer PC, but they're in the Interface class ....
-void ArmToMipsAssembler::B(int cc __unused, uint32_t* to_pc __unused)
-{
-    LOG_ALWAYS_FATAL("branch to absolute PC not supported, use Label\n");
-    mArmPC[mInum++] = pc();
-}
-
-void ArmToMipsAssembler::BL(int cc __unused, uint32_t* to_pc __unused)
-{
-    LOG_ALWAYS_FATAL("branch to absolute PC not supported, use Label\n");
-    mArmPC[mInum++] = pc();
-}
-
-void ArmToMipsAssembler::BX(int cc __unused, int Rn __unused)
-{
-    LOG_ALWAYS_FATAL("branch to absolute PC not supported, use Label\n");
-    mArmPC[mInum++] = pc();
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Data Transfer...
-#endif
-
-// data transfer...
-void ArmToMipsAssembler::LDR(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;      // convert LDR via Arm SP to LW via Mips SP
-            }
-            mMips->LW(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->ADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;      // convert STR thru Arm SP to STR thru Mips SP
-            }
-            mMips->LW(Rd, Rn, 0);
-            mMips->ADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->ADDU(R_at, Rn, amode.reg);
-            mMips->LW(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMipsAssembler::LDRB(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            mMips->LBU(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->ADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->LBU(Rd, Rn, 0);
-            mMips->ADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->ADDU(R_at, Rn, amode.reg);
-            mMips->LBU(Rd, R_at, 0);
-            break;
-    }
-
-}
-
-void ArmToMipsAssembler::STR(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            if (Rn == ARMAssemblerInterface::SP) {
-                Rn = R_sp;  // convert STR thru Arm SP to SW thru Mips SP
-            }
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                // If we will writeback, then update the index reg, then store.
-                // This correctly handles stack-push case.
-                mMips->ADDIU(Rn, Rn, amode.value);
-                mMips->SW(Rd, Rn, 0);
-            } else {
-                // No writeback so store offset by value
-                mMips->SW(Rd, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->SW(Rd, Rn, 0);
-            mMips->ADDIU(Rn, Rn, amode.value);  // post index always writes back
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->ADDU(R_at, Rn, amode.reg);
-            mMips->SW(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMipsAssembler::STRB(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed12_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            amode.writeback = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_12_PRE:
-            mMips->SB(Rd, Rn, amode.value);
-            if (amode.writeback) {      // OPTIONAL writeback on pre-index mode
-                mMips->ADDIU(Rn, Rn, amode.value);
-            }
-            break;
-        case AMODE_IMM_12_POST:
-            mMips->SB(Rd, Rn, 0);
-            mMips->ADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_SCALE_PRE:
-            // we only support simple base + index, no advanced modes for this one yet
-            mMips->ADDU(R_at, Rn, amode.reg);
-            mMips->SB(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMipsAssembler::LDRH(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed8_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_8_PRE:      // no support yet for writeback
-            mMips->LHU(Rd, Rn, amode.value);
-            break;
-        case AMODE_IMM_8_POST:
-            mMips->LHU(Rd, Rn, 0);
-            mMips->ADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_PRE:
-            // we only support simple base +/- index
-            if (amode.reg >= 0) {
-                mMips->ADDU(R_at, Rn, amode.reg);
-            } else {
-                mMips->SUBU(R_at, Rn, abs(amode.reg));
-            }
-            mMips->LHU(Rd, R_at, 0);
-            break;
-    }
-}
-
-void ArmToMipsAssembler::LDRSB(int cc __unused, int Rd __unused,
-                               int Rn __unused, uint32_t offset __unused)
-{
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::LDRSH(int cc __unused, int Rd __unused,
-                               int Rn __unused, uint32_t offset __unused)
-{
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::STRH(int cc __unused, int Rd, int Rn, uint32_t offset)
-{
-    mArmPC[mInum++] = pc();
-    // work-around for ARM default address mode of immed8_pre(0)
-    if (offset > AMODE_UNSUPPORTED) offset = 0;
-    switch (offset) {
-        case 0:
-            amode.value = 0;
-            // fall thru to next case ....
-        case AMODE_IMM_8_PRE:      // no support yet for writeback
-            mMips->SH(Rd, Rn, amode.value);
-            break;
-        case AMODE_IMM_8_POST:
-            mMips->SH(Rd, Rn, 0);
-            mMips->ADDIU(Rn, Rn, amode.value);
-            break;
-        case AMODE_REG_PRE:
-            // we only support simple base +/- index
-            if (amode.reg >= 0) {
-                mMips->ADDU(R_at, Rn, amode.reg);
-            } else {
-                mMips->SUBU(R_at, Rn, abs(amode.reg));
-            }
-            mMips->SH(Rd, R_at, 0);
-            break;
-    }
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Block Data Transfer...
-#endif
-
-// block data transfer...
-void ArmToMipsAssembler::LDM(int cc __unused, int dir __unused,
-        int Rn __unused, int W __unused, uint32_t reg_list __unused)
-{   //                        ED FD EA FA      IB IA DB DA
-    // const uint8_t P[8] = { 1, 0, 1, 0,      1, 0, 1, 0 };
-    // const uint8_t U[8] = { 1, 1, 0, 0,      1, 1, 0, 0 };
-    // *mPC++ = (cc<<28) | (4<<25) | (uint32_t(P[dir])<<24) |
-    //         (uint32_t(U[dir])<<23) | (1<<20) | (W<<21) | (Rn<<16) | reg_list;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::STM(int cc __unused, int dir __unused,
-        int Rn __unused, int W __unused, uint32_t reg_list __unused)
-{   //                        FA EA FD ED      IB IA DB DA
-    // const uint8_t P[8] = { 0, 1, 0, 1,      1, 0, 1, 0 };
-    // const uint8_t U[8] = { 0, 0, 1, 1,      1, 1, 0, 0 };
-    // *mPC++ = (cc<<28) | (4<<25) | (uint32_t(P[dir])<<24) |
-    //         (uint32_t(U[dir])<<23) | (0<<20) | (W<<21) | (Rn<<16) | reg_list;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Special...
-#endif
-
-// special...
-void ArmToMipsAssembler::SWP(int cc __unused, int Rn __unused,
-                             int Rd __unused, int Rm __unused) {
-    // *mPC++ = (cc<<28) | (2<<23) | (Rn<<16) | (Rd << 12) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::SWPB(int cc __unused, int Rn __unused,
-                              int Rd __unused, int Rm __unused) {
-    // *mPC++ = (cc<<28) | (2<<23) | (1<<22) | (Rn<<16) | (Rd << 12) | 0x90 | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::SWI(int cc __unused, uint32_t comment __unused) {
-    // *mPC++ = (cc<<28) | (0xF<<24) | comment;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-
-#if 0
-#pragma mark -
-#pragma mark DSP instructions...
-#endif
-
-// DSP instructions...
-void ArmToMipsAssembler::PLD(int Rn __unused, uint32_t offset) {
-    LOG_ALWAYS_FATAL_IF(!((offset&(1<<24)) && !(offset&(1<<21))),
-                        "PLD only P=1, W=0");
-    // *mPC++ = 0xF550F000 | (Rn<<16) | offset;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::CLZ(int cc __unused, int Rd, int Rm)
-{
-    mArmPC[mInum++] = pc();
-    mMips->CLZ(Rd, Rm);
-}
-
-void ArmToMipsAssembler::QADD(int cc __unused,  int Rd __unused,
-                              int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1000050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::QDADD(int cc __unused,  int Rd __unused,
-                               int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1400050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::QSUB(int cc __unused,  int Rd __unused,
-                              int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1200050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::QDSUB(int cc __unused,  int Rd __unused,
-                               int Rm __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1600050 | (Rn<<16) | (Rd<<12) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-// 16 x 16 signed multiply (like SMLAxx without the accumulate)
-void ArmToMipsAssembler::SMUL(int cc __unused, int xy,
-                int Rd, int Rm, int Rs)
-{
-    mArmPC[mInum++] = pc();
-
-    // the 16 bits may be in the top or bottom half of 32-bit source reg,
-    // as defined by the codes BB, BT, TB, TT (compressed param xy)
-    // where x corresponds to Rm and y to Rs
-
-    // select half-reg for Rm
-    if (xy & xyTB) {
-        // use top 16-bits
-        mMips->SRA(R_at, Rm, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        if (mips32r2) {
-            mMips->SEH(R_at, Rm);
-        } else {
-            mMips->SLL(R_at, Rm, 16);
-            mMips->SRA(R_at, R_at, 16);
-        }
-    }
-    // select half-reg for Rs
-    if (xy & xyBT) {
-        // use top 16-bits
-        mMips->SRA(R_at2, Rs, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        if (mips32r2) {
-            mMips->SEH(R_at2, Rs);
-        } else {
-            mMips->SLL(R_at2, Rs, 16);
-            mMips->SRA(R_at2, R_at2, 16);
-        }
-    }
-    mMips->MUL(Rd, R_at, R_at2);
-}
-
-// signed 32b x 16b multiple, save top 32-bits of 48-bit result
-void ArmToMipsAssembler::SMULW(int cc __unused, int y,
-                int Rd, int Rm, int Rs)
-{
-    mArmPC[mInum++] = pc();
-
-    // the selector yT or yB refers to reg Rs
-    if (y & yT) {
-        // zero the bottom 16-bits, with 2 shifts, it can affect result
-        mMips->SRL(R_at, Rs, 16);
-        mMips->SLL(R_at, R_at, 16);
-
-    } else {
-        // move low 16-bit half, to high half
-        mMips->SLL(R_at, Rs, 16);
-    }
-    mMips->MULT(Rm, R_at);
-    mMips->MFHI(Rd);
-}
-
-// 16 x 16 signed multiply, accumulate: Rd = Rm{16} * Rs{16} + Rn
-void ArmToMipsAssembler::SMLA(int cc __unused, int xy,
-                int Rd, int Rm, int Rs, int Rn)
-{
-    mArmPC[mInum++] = pc();
-
-    // the 16 bits may be in the top or bottom half of 32-bit source reg,
-    // as defined by the codes BB, BT, TB, TT (compressed param xy)
-    // where x corresponds to Rm and y to Rs
-
-    // select half-reg for Rm
-    if (xy & xyTB) {
-        // use top 16-bits
-        mMips->SRA(R_at, Rm, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        if (mips32r2) {
-            mMips->SEH(R_at, Rm);
-        } else {
-            mMips->SLL(R_at, Rm, 16);
-            mMips->SRA(R_at, R_at, 16);
-        }
-    }
-    // select half-reg for Rs
-    if (xy & xyBT) {
-        // use top 16-bits
-        mMips->SRA(R_at2, Rs, 16);
-    } else {
-        // use bottom 16, but sign-extend to 32
-        if (mips32r2) {
-            mMips->SEH(R_at2, Rs);
-        } else {
-            mMips->SLL(R_at2, Rs, 16);
-            mMips->SRA(R_at2, R_at2, 16);
-        }
-    }
-
-    mMips->MUL(R_at, R_at, R_at2);
-    mMips->ADDU(Rd, R_at, Rn);
-}
-
-void ArmToMipsAssembler::SMLAL(int cc __unused, int xy __unused,
-                               int RdHi __unused, int RdLo __unused,
-                               int Rs __unused, int Rm __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1400080 | (RdHi<<16) | (RdLo<<12) | (Rs<<8) | (xy<<4) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-void ArmToMipsAssembler::SMLAW(int cc __unused, int y __unused,
-                               int Rd __unused, int Rm __unused,
-                               int Rs __unused, int Rn __unused)
-{
-    // *mPC++ = (cc<<28) | 0x1200080 | (Rd<<16) | (Rn<<12) | (Rs<<8) | (y<<4) | Rm;
-    mArmPC[mInum++] = pc();
-    mMips->NOP2();
-    NOT_IMPLEMENTED();
-}
-
-// used by ARMv6 version of GGLAssembler::filter32
-void ArmToMipsAssembler::UXTB16(int cc __unused, int Rd, int Rm, int rotate)
-{
-    mArmPC[mInum++] = pc();
-
-    //Rd[31:16] := ZeroExtend((Rm ROR (8 * sh))[23:16]),
-    //Rd[15:0] := ZeroExtend((Rm ROR (8 * sh))[7:0]). sh 0-3.
-
-    mMips->ROTR(Rm, Rm, rotate * 8);
-    mMips->AND(Rd, Rm, 0x00FF00FF);
-}
-
-void ArmToMipsAssembler::UBFX(int cc __unused, int Rd __unused,
-                              int Rn __unused, int lsb __unused,
-                              int width __unused)
-{
-     /* Placeholder for UBFX */
-     mArmPC[mInum++] = pc();
-
-     mMips->NOP2();
-     NOT_IMPLEMENTED();
-}
-
-
-
-
-
-#if 0
-#pragma mark -
-#pragma mark MIPS Assembler...
-#endif
-
-
-//**************************************************************************
-//**************************************************************************
-//**************************************************************************
-
-
-/* mips assembler
-** this is a subset of mips32r2, targeted specifically at ARM instruction
-** replacement in the pixelflinger/codeflinger code.
-**
-** To that end, there is no need for floating point, or priviledged
-** instructions. This all runs in user space, no float.
-**
-** The syntax makes no attempt to be as complete as the assember, with
-** synthetic instructions, and automatic recognition of immedate operands
-** (use the immediate form of the instruction), etc.
-**
-** We start with mips32r1, and may add r2 and dsp extensions if cpu
-** supports. Decision will be made at compile time, based on gcc
-** options. (makes sense since android will be built for a a specific
-** device)
-*/
-
-MIPSAssembler::MIPSAssembler(const sp<Assembly>& assembly, ArmToMipsAssembler *parent)
-    : mParent(parent),
-    mAssembly(assembly)
-{
-    mBase = mPC = (uint32_t *)assembly->base();
-    mDuration = ggl_system_time();
-}
-
-MIPSAssembler::MIPSAssembler(void* assembly)
-    : mParent(NULL), mAssembly(NULL)
-{
-    mBase = mPC = (uint32_t *)assembly;
-}
-
-MIPSAssembler::~MIPSAssembler()
-{
-}
-
-
-uint32_t* MIPSAssembler::pc() const
-{
-    return mPC;
-}
-
-uint32_t* MIPSAssembler::base() const
-{
-    return mBase;
-}
-
-void MIPSAssembler::reset()
-{
-    mBase = mPC = (uint32_t *)mAssembly->base();
-    mBranchTargets.clear();
-    mLabels.clear();
-    mLabelsInverseMapping.clear();
-    mComments.clear();
-}
-
-
-// convert tabs to spaces, and remove any newline
-// works with strings of limited size (makes a temp copy)
-#define TABSTOP 8
-void MIPSAssembler::string_detab(char *s)
-{
-    char *os = s;
-    char temp[100];
-    char *t = temp;
-    int len = 99;
-    int i = TABSTOP;
-
-    while (*s && len-- > 0) {
-        if (*s == '\n') { s++; continue; }
-        if (*s == '\t') {
-            s++;
-            for ( ; i>0; i--) {*t++ = ' '; len--; }
-        } else {
-            *t++ = *s++;
-        }
-        if (i <= 0) i = TABSTOP;
-        i--;
-    }
-    *t = '\0';
-    strcpy(os, temp);
-}
-
-void MIPSAssembler::string_pad(char *s, int padded_len)
-{
-    int len = strlen(s);
-    s += len;
-    for (int i = padded_len - len; i > 0; --i) {
-        *s++ = ' ';
-    }
-    *s = '\0';
-}
-
-// ----------------------------------------------------------------------------
-
-void MIPSAssembler::disassemble(const char* name)
-{
-    char di_buf[140];
-
-    if (name) {
-        ALOGW("%s:\n", name);
-    }
-
-    bool arm_disasm_fmt = (mParent->mArmDisassemblyBuffer == NULL) ? false : true;
-
-    typedef char dstr[40];
-    dstr *lines = (dstr *)mParent->mArmDisassemblyBuffer;
-
-    if (mParent->mArmDisassemblyBuffer != NULL) {
-        for (int i=0; i<mParent->mArmInstrCount; ++i) {
-            string_detab(lines[i]);
-        }
-    }
-
-    size_t count = pc()-base();
-    uint32_t* mipsPC = base();
-    while (count--) {
-        ssize_t label = mLabelsInverseMapping.indexOfKey(mipsPC);
-        if (label >= 0) {
-            ALOGW("%s:\n", mLabelsInverseMapping.valueAt(label));
-        }
-        ssize_t comment = mComments.indexOfKey(mipsPC);
-        if (comment >= 0) {
-            ALOGW("; %s\n", mComments.valueAt(comment));
-        }
-        // ALOGW("%08x:    %08x    ", int(i), int(i[0]));
-        ::mips_disassem(mipsPC, di_buf, arm_disasm_fmt);
-        string_detab(di_buf);
-        string_pad(di_buf, 30);
-        ALOGW("0x%p:    %08x    %s", mipsPC, uint32_t(*mipsPC), di_buf);
-        mipsPC++;
-    }
-}
-
-void MIPSAssembler::comment(const char* string)
-{
-    mComments.add(pc(), string);
-}
-
-void MIPSAssembler::label(const char* theLabel)
-{
-    mLabels.add(theLabel, pc());
-    mLabelsInverseMapping.add(pc(), theLabel);
-}
-
-
-void MIPSAssembler::prolog()
-{
-    // empty - done in ArmToMipsAssembler
-}
-
-void MIPSAssembler::epilog(uint32_t touched __unused)
-{
-    // empty - done in ArmToMipsAssembler
-}
-
-int MIPSAssembler::generate(const char* name)
-{
-    // fixup all the branches
-    size_t count = mBranchTargets.size();
-    while (count--) {
-        const branch_target_t& bt = mBranchTargets[count];
-        uint32_t* target_pc = mLabels.valueFor(bt.label);
-        LOG_ALWAYS_FATAL_IF(!target_pc,
-                "error resolving branch targets, target_pc is null");
-        int32_t offset = int32_t(target_pc - (bt.pc+1));
-        *bt.pc |= offset & 0x00FFFF;
-    }
-
-    mAssembly->resize( int(pc()-base())*4 );
-
-    // the instruction & data caches are flushed by CodeCache
-    const int64_t duration = ggl_system_time() - mDuration;
-    const char * const format = "generated %s (%d ins) at [%p:%p] in %" PRId64 " ns\n";
-    ALOGI(format, name, int(pc()-base()), base(), pc(), duration);
-
-    char value[PROPERTY_VALUE_MAX];
-    value[0] = '\0';
-
-    property_get("debug.pf.disasm", value, "0");
-
-    if (atoi(value) != 0) {
-        disassemble(name);
-    }
-
-    return OK;
-}
-
-uint32_t* MIPSAssembler::pcForLabel(const char* label)
-{
-    return mLabels.valueFor(label);
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Arithmetic...
-#endif
-
-void MIPSAssembler::ADDU(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (addu_fn<<FUNC_SHF)
-                    | (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF);
-}
-
-// MD00086 pdf says this is: ADDIU rt, rs, imm -- they do not use Rd
-void MIPSAssembler::ADDIU(int Rt, int Rs, int16_t imm)
-{
-    *mPC++ = (addiu_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-
-void MIPSAssembler::SUBU(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (subu_fn<<FUNC_SHF) |
-                        (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF) ;
-}
-
-
-void MIPSAssembler::SUBIU(int Rt, int Rs, int16_t imm)   // really addiu(d, s, -j)
-{
-    *mPC++ = (addiu_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | ((-imm) & MSK_16);
-}
-
-
-void MIPSAssembler::NEGU(int Rd, int Rs)    // really subu(d, zero, s)
-{
-    MIPSAssembler::SUBU(Rd, 0, Rs);
-}
-
-void MIPSAssembler::MUL(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec2_op<<OP_SHF) | (mul_fn<<FUNC_SHF) |
-                        (Rs<<RS_SHF) | (Rt<<RT_SHF) | (Rd<<RD_SHF) ;
-}
-
-void MIPSAssembler::MULT(int Rs, int Rt)    // dest is hi,lo
-{
-    *mPC++ = (spec_op<<OP_SHF) | (mult_fn<<FUNC_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF);
-}
-
-void MIPSAssembler::MULTU(int Rs, int Rt)    // dest is hi,lo
-{
-    *mPC++ = (spec_op<<OP_SHF) | (multu_fn<<FUNC_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF);
-}
-
-void MIPSAssembler::MADD(int Rs, int Rt)    // hi,lo = hi,lo + Rs * Rt
-{
-    *mPC++ = (spec2_op<<OP_SHF) | (madd_fn<<FUNC_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF);
-}
-
-void MIPSAssembler::MADDU(int Rs, int Rt)    // hi,lo = hi,lo + Rs * Rt
-{
-    *mPC++ = (spec2_op<<OP_SHF) | (maddu_fn<<FUNC_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF);
-}
-
-
-void MIPSAssembler::MSUB(int Rs, int Rt)    // hi,lo = hi,lo - Rs * Rt
-{
-    *mPC++ = (spec2_op<<OP_SHF) | (msub_fn<<FUNC_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF);
-}
-
-void MIPSAssembler::MSUBU(int Rs, int Rt)    // hi,lo = hi,lo - Rs * Rt
-{
-    *mPC++ = (spec2_op<<OP_SHF) | (msubu_fn<<FUNC_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF);
-}
-
-
-void MIPSAssembler::SEB(int Rd, int Rt)    // sign-extend byte (mips32r2)
-{
-    *mPC++ = (spec3_op<<OP_SHF) | (bshfl_fn<<FUNC_SHF) | (seb_fn << SA_SHF) |
-                    (Rt<<RT_SHF) | (Rd<<RD_SHF);
-}
-
-void MIPSAssembler::SEH(int Rd, int Rt)    // sign-extend half-word (mips32r2)
-{
-    *mPC++ = (spec3_op<<OP_SHF) | (bshfl_fn<<FUNC_SHF) | (seh_fn << SA_SHF) |
-                    (Rt<<RT_SHF) | (Rd<<RD_SHF);
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Comparisons...
-#endif
-
-void MIPSAssembler::SLT(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (slt_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::SLTI(int Rt, int Rs, int16_t imm)
-{
-    *mPC++ = (slti_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-
-void MIPSAssembler::SLTU(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (sltu_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::SLTIU(int Rt, int Rs, int16_t imm)
-{
-    *mPC++ = (sltiu_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Logical...
-#endif
-
-void MIPSAssembler::AND(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (and_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::ANDI(int Rt, int Rs, uint16_t imm)      // todo: support larger immediate
-{
-    *mPC++ = (andi_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-
-void MIPSAssembler::OR(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (or_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::ORI(int Rt, int Rs, uint16_t imm)
-{
-    *mPC++ = (ori_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-void MIPSAssembler::NOR(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (nor_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::NOT(int Rd, int Rs)
-{
-    MIPSAssembler::NOR(Rd, Rs, 0);  // NOT(d,s) = NOR(d,s,zero)
-}
-
-void MIPSAssembler::XOR(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (xor_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::XORI(int Rt, int Rs, uint16_t imm)  // todo: support larger immediate
-{
-    *mPC++ = (xori_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | (imm & MSK_16);
-}
-
-void MIPSAssembler::SLL(int Rd, int Rt, int shft)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (sll_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rt<<RT_SHF) | (shft<<RE_SHF);
-}
-
-void MIPSAssembler::SLLV(int Rd, int Rt, int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (sllv_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::SRL(int Rd, int Rt, int shft)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (srl_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rt<<RT_SHF) | (shft<<RE_SHF);
-}
-
-void MIPSAssembler::SRLV(int Rd, int Rt, int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (srlv_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::SRA(int Rd, int Rt, int shft)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (sra_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rt<<RT_SHF) | (shft<<RE_SHF);
-}
-
-void MIPSAssembler::SRAV(int Rd, int Rt, int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (srav_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::ROTR(int Rd, int Rt, int shft)      // mips32r2
-{
-    // note weird encoding (SRL + 1)
-    *mPC++ = (spec_op<<OP_SHF) | (srl_fn<<FUNC_SHF) |
-                        (1<<RS_SHF) | (Rd<<RD_SHF) | (Rt<<RT_SHF) | (shft<<RE_SHF);
-}
-
-void MIPSAssembler::ROTRV(int Rd, int Rt, int Rs)       // mips32r2
-{
-    // note weird encoding (SRLV + 1)
-    *mPC++ = (spec_op<<OP_SHF) | (srlv_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF) | (1<<RE_SHF);
-}
-
-// uses at2 register (mapped to some appropriate mips reg)
-void MIPSAssembler::RORsyn(int Rd, int Rt, int Rs)
-{
-    // synthetic: d = t rotated by s
-    MIPSAssembler::NEGU(R_at2, Rs);
-    MIPSAssembler::SLLV(R_at2, Rt, R_at2);
-    MIPSAssembler::SRLV(Rd, Rt, Rs);
-    MIPSAssembler::OR(Rd, Rd, R_at2);
-}
-
-// immediate version - uses at2 register (mapped to some appropriate mips reg)
-void MIPSAssembler::RORIsyn(int Rd, int Rt, int rot)
-{
-    // synthetic: d = t rotated by immed rot
-    // d = s >> rot | s << (32-rot)
-    MIPSAssembler::SLL(R_at2, Rt, 32-rot);
-    MIPSAssembler::SRL(Rd, Rt, rot);
-    MIPSAssembler::OR(Rd, Rd, R_at2);
-}
-
-void MIPSAssembler::CLO(int Rd, int Rs)
-{
-    // Rt field must have same gpr # as Rd
-    *mPC++ = (spec2_op<<OP_SHF) | (clo_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rd<<RT_SHF);
-}
-
-void MIPSAssembler::CLZ(int Rd, int Rs)
-{
-    // Rt field must have same gpr # as Rd
-    *mPC++ = (spec2_op<<OP_SHF) | (clz_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rd<<RT_SHF);
-}
-
-void MIPSAssembler::WSBH(int Rd, int Rt)      // mips32r2
-{
-    *mPC++ = (spec3_op<<OP_SHF) | (bshfl_fn<<FUNC_SHF) | (wsbh_fn << SA_SHF) |
-                        (Rt<<RT_SHF) | (Rd<<RD_SHF);
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Load/store...
-#endif
-
-void MIPSAssembler::LW(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (lw_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPSAssembler::SW(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (sw_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-// lb is sign-extended
-void MIPSAssembler::LB(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (lb_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPSAssembler::LBU(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (lbu_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPSAssembler::SB(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (sb_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-// lh is sign-extended
-void MIPSAssembler::LH(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (lh_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPSAssembler::LHU(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (lhu_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPSAssembler::SH(int Rt, int Rbase, int16_t offset)
-{
-    *mPC++ = (sh_op<<OP_SHF) | (Rbase<<RS_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-void MIPSAssembler::LUI(int Rt, int16_t offset)
-{
-    *mPC++ = (lui_op<<OP_SHF) | (Rt<<RT_SHF) | (offset & MSK_16);
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Register move...
-#endif
-
-void MIPSAssembler::MOVE(int Rd, int Rs)
-{
-    // encoded as "or rd, rs, zero"
-    *mPC++ = (spec_op<<OP_SHF) | (or_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (0<<RT_SHF);
-}
-
-void MIPSAssembler::MOVN(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (movn_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::MOVZ(int Rd, int Rs, int Rt)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (movz_fn<<FUNC_SHF) |
-                        (Rd<<RD_SHF) | (Rs<<RS_SHF) | (Rt<<RT_SHF);
-}
-
-void MIPSAssembler::MFHI(int Rd)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (mfhi_fn<<FUNC_SHF) | (Rd<<RD_SHF);
-}
-
-void MIPSAssembler::MFLO(int Rd)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (mflo_fn<<FUNC_SHF) | (Rd<<RD_SHF);
-}
-
-void MIPSAssembler::MTHI(int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (mthi_fn<<FUNC_SHF) | (Rs<<RS_SHF);
-}
-
-void MIPSAssembler::MTLO(int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (mtlo_fn<<FUNC_SHF) | (Rs<<RS_SHF);
-}
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Branch...
-#endif
-
-// temporarily forcing a NOP into branch-delay slot, just to be safe
-// todo: remove NOP, optimze use of delay slots
-void MIPSAssembler::B(const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-
-    // encoded as BEQ zero, zero, offset
-    *mPC++ = (beq_op<<OP_SHF) | (0<<RT_SHF)
-                        | (0<<RS_SHF) | 0;  // offset filled in later
-
-    MIPSAssembler::NOP();
-}
-
-void MIPSAssembler::BEQ(int Rs, int Rt, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (beq_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | 0;
-    MIPSAssembler::NOP();
-}
-
-void MIPSAssembler::BNE(int Rs, int Rt, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (bne_op<<OP_SHF) | (Rt<<RT_SHF) | (Rs<<RS_SHF) | 0;
-    MIPSAssembler::NOP();
-}
-
-void MIPSAssembler::BLEZ(int Rs, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (blez_op<<OP_SHF) | (0<<RT_SHF) | (Rs<<RS_SHF) | 0;
-    MIPSAssembler::NOP();
-}
-
-void MIPSAssembler::BLTZ(int Rs, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (regimm_op<<OP_SHF) | (bltz_fn<<RT_SHF) | (Rs<<RS_SHF) | 0;
-    MIPSAssembler::NOP();
-}
-
-void MIPSAssembler::BGTZ(int Rs, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (bgtz_op<<OP_SHF) | (0<<RT_SHF) | (Rs<<RS_SHF) | 0;
-    MIPSAssembler::NOP();
-}
-
-
-void MIPSAssembler::BGEZ(int Rs, const char* label)
-{
-    mBranchTargets.add(branch_target_t(label, mPC));
-    *mPC++ = (regimm_op<<OP_SHF) | (bgez_fn<<RT_SHF) | (Rs<<RS_SHF) | 0;
-    MIPSAssembler::NOP();
-}
-
-void MIPSAssembler::JR(int Rs)
-{
-    *mPC++ = (spec_op<<OP_SHF) | (Rs<<RS_SHF) | (jr_fn << FUNC_SHF);
-    MIPSAssembler::NOP();
-}
-
-
-#if 0
-#pragma mark -
-#pragma mark Synthesized Branch...
-#endif
-
-// synthetic variants of branches (using slt & friends)
-void MIPSAssembler::BEQZ(int Rs, const char* label)
-{
-    BEQ(Rs, R_zero, label);
-}
-
-void MIPSAssembler::BNEZ(int Rs __unused, const char* label)
-{
-    BNE(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BGE(int Rs, int Rt, const char* label)
-{
-    SLT(R_at, Rs, Rt);
-    BEQ(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BGEU(int Rs, int Rt, const char* label)
-{
-    SLTU(R_at, Rs, Rt);
-    BEQ(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BGT(int Rs, int Rt, const char* label)
-{
-    SLT(R_at, Rt, Rs);   // rev
-    BNE(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BGTU(int Rs, int Rt, const char* label)
-{
-    SLTU(R_at, Rt, Rs);   // rev
-    BNE(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BLE(int Rs, int Rt, const char* label)
-{
-    SLT(R_at, Rt, Rs);   // rev
-    BEQ(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BLEU(int Rs, int Rt, const char* label)
-{
-    SLTU(R_at, Rt, Rs);  // rev
-    BEQ(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BLT(int Rs, int Rt, const char* label)
-{
-    SLT(R_at, Rs, Rt);
-    BNE(R_at, R_zero, label);
-}
-
-void MIPSAssembler::BLTU(int Rs, int Rt, const char* label)
-{
-    SLTU(R_at, Rs, Rt);
-    BNE(R_at, R_zero, label);
-}
-
-
-
-
-#if 0
-#pragma mark -
-#pragma mark Misc...
-#endif
-
-void MIPSAssembler::NOP(void)
-{
-    // encoded as "sll zero, zero, 0", which is all zero
-    *mPC++ = (spec_op<<OP_SHF) | (sll_fn<<FUNC_SHF);
-}
-
-// using this as special opcode for not-yet-implemented ARM instruction
-void MIPSAssembler::NOP2(void)
-{
-    // encoded as "sll zero, zero, 2", still a nop, but a unique code
-    *mPC++ = (spec_op<<OP_SHF) | (sll_fn<<FUNC_SHF) | (2 << RE_SHF);
-}
-
-// using this as special opcode for purposefully NOT implemented ARM instruction
-void MIPSAssembler::UNIMPL(void)
-{
-    // encoded as "sll zero, zero, 3", still a nop, but a unique code
-    *mPC++ = (spec_op<<OP_SHF) | (sll_fn<<FUNC_SHF) | (3 << RE_SHF);
-}
-
-
-}; // namespace android:
diff --git a/libpixelflinger/codeflinger/MIPSAssembler.h b/libpixelflinger/codeflinger/MIPSAssembler.h
deleted file mode 100644
index c1178b6..0000000
--- a/libpixelflinger/codeflinger/MIPSAssembler.h
+++ /dev/null
@@ -1,557 +0,0 @@
-/* libs/pixelflinger/codeflinger/MIPSAssembler.h
-**
-** Copyright 2012, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifndef ANDROID_MIPSASSEMBLER_H
-#define ANDROID_MIPSASSEMBLER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "tinyutils/smartpointer.h"
-#include "utils/KeyedVector.h"
-#include "utils/Vector.h"
-
-#include "ARMAssemblerInterface.h"
-#include "CodeCache.h"
-
-namespace android {
-
-class MIPSAssembler;    // forward reference
-
-// this class mimics ARMAssembler interface
-//  intent is to translate each ARM instruction to 1 or more MIPS instr
-//  implementation calls MIPSAssembler class to generate mips code
-class ArmToMipsAssembler : public ARMAssemblerInterface
-{
-public:
-                ArmToMipsAssembler(const sp<Assembly>& assembly,
-                        char *abuf = 0, int linesz = 0, int instr_count = 0);
-    virtual     ~ArmToMipsAssembler();
-
-    uint32_t*   base() const;
-    uint32_t*   pc() const;
-    void        disassemble(const char* name);
-
-    virtual void    reset();
-
-    virtual int     generate(const char* name);
-    virtual int     getCodegenArch();
-
-    virtual void    prolog();
-    virtual void    epilog(uint32_t touched);
-    virtual void    comment(const char* string);
-
-
-    // -----------------------------------------------------------------------
-    // shifters and addressing modes
-    // -----------------------------------------------------------------------
-
-    // shifters...
-    virtual bool        isValidImmediate(uint32_t immed);
-    virtual int         buildImmediate(uint32_t i, uint32_t& rot, uint32_t& imm);
-
-    virtual uint32_t    imm(uint32_t immediate);
-    virtual uint32_t    reg_imm(int Rm, int type, uint32_t shift);
-    virtual uint32_t    reg_rrx(int Rm);
-    virtual uint32_t    reg_reg(int Rm, int type, int Rs);
-
-    // addressing modes...
-    // LDR(B)/STR(B)/PLD
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed12_pre(int32_t immed12, int W=0);
-    virtual uint32_t    immed12_post(int32_t immed12);
-    virtual uint32_t    reg_scale_pre(int Rm, int type=0, uint32_t shift=0, int W=0);
-    virtual uint32_t    reg_scale_post(int Rm, int type=0, uint32_t shift=0);
-
-    // LDRH/LDRSB/LDRSH/STRH
-    // (immediate and Rm can be negative, which indicates U=0)
-    virtual uint32_t    immed8_pre(int32_t immed8, int W=0);
-    virtual uint32_t    immed8_post(int32_t immed8);
-    virtual uint32_t    reg_pre(int Rm, int W=0);
-    virtual uint32_t    reg_post(int Rm);
-
-
-
-
-    virtual void    dataProcessing(int opcode, int cc, int s,
-                                int Rd, int Rn,
-                                uint32_t Op2);
-    virtual void MLA(int cc, int s,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void MUL(int cc, int s,
-                int Rd, int Rm, int Rs);
-    virtual void UMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void UMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMULL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-    virtual void SMUAL(int cc, int s,
-                int RdLo, int RdHi, int Rm, int Rs);
-
-    virtual void B(int cc, uint32_t* pc);
-    virtual void BL(int cc, uint32_t* pc);
-    virtual void BX(int cc, int Rn);
-    virtual void label(const char* theLabel);
-    virtual void B(int cc, const char* label);
-    virtual void BL(int cc, const char* label);
-
-    virtual uint32_t* pcForLabel(const char* label);
-
-    virtual void LDR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STR (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STRB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRH (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRSB(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void LDRSH(int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-    virtual void STRH (int cc, int Rd,
-                int Rn, uint32_t offset = 0);
-
-    virtual void LDM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-    virtual void STM(int cc, int dir,
-                int Rn, int W, uint32_t reg_list);
-
-    virtual void SWP(int cc, int Rn, int Rd, int Rm);
-    virtual void SWPB(int cc, int Rn, int Rd, int Rm);
-    virtual void SWI(int cc, uint32_t comment);
-
-    virtual void PLD(int Rn, uint32_t offset);
-    virtual void CLZ(int cc, int Rd, int Rm);
-    virtual void QADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QDADD(int cc, int Rd, int Rm, int Rn);
-    virtual void QSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void QDSUB(int cc, int Rd, int Rm, int Rn);
-    virtual void SMUL(int cc, int xy,
-                int Rd, int Rm, int Rs);
-    virtual void SMULW(int cc, int y,
-                int Rd, int Rm, int Rs);
-    virtual void SMLA(int cc, int xy,
-                int Rd, int Rm, int Rs, int Rn);
-    virtual void SMLAL(int cc, int xy,
-                int RdHi, int RdLo, int Rs, int Rm);
-    virtual void SMLAW(int cc, int y,
-                int Rd, int Rm, int Rs, int Rn);
-
-    // byte/half word extract...
-    virtual void UXTB16(int cc, int Rd, int Rm, int rotate);
-
-    // bit manipulation...
-    virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width);
-
-    // this is some crap to share is MIPSAssembler class for debug
-    char *      mArmDisassemblyBuffer;
-    int         mArmLineLength;
-    int         mArmInstrCount;
-
-    int         mInum;      // current arm instuction number (0..n)
-    uint32_t**  mArmPC;     // array: PC for 1st mips instr of
-                            //      each translated ARM instr
-
-
-private:
-    ArmToMipsAssembler(const ArmToMipsAssembler& rhs);
-    ArmToMipsAssembler& operator = (const ArmToMipsAssembler& rhs);
-
-    void init_conditional_labels(void);
-
-    void protectConditionalOperands(int Rd);
-
-    // reg__tmp set to MIPS AT, reg 1
-    int dataProcAdrModes(int op, int& source, bool sign = false, int reg_tmp = 1);
-
-    sp<Assembly>        mAssembly;
-    MIPSAssembler*      mMips;
-
-
-    enum misc_constants_t {
-        ARM_MAX_INSTUCTIONS = 512  // based on ASSEMBLY_SCRATCH_SIZE
-    };
-
-    enum {
-        SRC_REG = 0,
-        SRC_IMM,
-        SRC_ERROR = -1
-    };
-
-    enum addr_modes {
-        // start above the range of legal mips reg #'s (0-31)
-        AMODE_REG = 0x20,
-        AMODE_IMM, AMODE_REG_IMM,               // for data processing
-        AMODE_IMM_12_PRE, AMODE_IMM_12_POST,    // for load/store
-        AMODE_REG_SCALE_PRE, AMODE_IMM_8_PRE,
-        AMODE_IMM_8_POST, AMODE_REG_PRE,
-        AMODE_UNSUPPORTED
-    };
-
-    struct addr_mode_t {    // address modes for current ARM instruction
-        int         reg;
-        int         stype;
-        uint32_t    value;
-        bool        writeback;  // writeback the adr reg after modification
-    } amode;
-
-    enum cond_types {
-        CMP_COND = 1,
-        SBIT_COND
-    };
-
-    struct cond_mode_t {    // conditional-execution info for current ARM instruction
-        cond_types  type;
-        int         r1;
-        int         r2;
-        int         labelnum;
-        char        label[100][10];
-    } cond;
-
-};
-
-
-
-
-// ----------------------------------------------------------------------------
-// ----------------------------------------------------------------------------
-// ----------------------------------------------------------------------------
-
-// This is the basic MIPS assembler, which just creates the opcodes in memory.
-// All the more complicated work is done in ArmToMipsAssember above.
-
-class MIPSAssembler
-{
-public:
-                MIPSAssembler(const sp<Assembly>& assembly, ArmToMipsAssembler *parent);
-                MIPSAssembler(void* assembly);
-    virtual     ~MIPSAssembler();
-
-    virtual uint32_t*   base() const;
-    virtual uint32_t*   pc() const;
-    virtual void        reset();
-
-    virtual void        disassemble(const char* name);
-
-    virtual void        prolog();
-    virtual void        epilog(uint32_t touched);
-    virtual int         generate(const char* name);
-    virtual void        comment(const char* string);
-    virtual void        label(const char* string);
-
-    // valid only after generate() has been called
-    virtual uint32_t*   pcForLabel(const char* label);
-
-
-    // ------------------------------------------------------------------------
-    // MIPSAssemblerInterface...
-    // ------------------------------------------------------------------------
-
-#if 0
-#pragma mark -
-#pragma mark Arithmetic...
-#endif
-
-    void ADDU(int Rd, int Rs, int Rt);
-    void ADDIU(int Rt, int Rs, int16_t imm);
-    void SUBU(int Rd, int Rs, int Rt);
-    void SUBIU(int Rt, int Rs, int16_t imm);
-    void NEGU(int Rd, int Rs);
-    void MUL(int Rd, int Rs, int Rt);
-    void MULT(int Rs, int Rt);      // dest is hi,lo
-    void MULTU(int Rs, int Rt);     // dest is hi,lo
-    void MADD(int Rs, int Rt);      // hi,lo = hi,lo + Rs * Rt
-    void MADDU(int Rs, int Rt);     // hi,lo = hi,lo + Rs * Rt
-    void MSUB(int Rs, int Rt);      // hi,lo = hi,lo - Rs * Rt
-    void MSUBU(int Rs, int Rt);     // hi,lo = hi,lo - Rs * Rt
-    void SEB(int Rd, int Rt);       // sign-extend byte (mips32r2)
-    void SEH(int Rd, int Rt);       // sign-extend half-word (mips32r2)
-
-
-#if 0
-#pragma mark -
-#pragma mark Comparisons...
-#endif
-
-    void SLT(int Rd, int Rs, int Rt);
-    void SLTI(int Rt, int Rs, int16_t imm);
-    void SLTU(int Rd, int Rs, int Rt);
-    void SLTIU(int Rt, int Rs, int16_t imm);
-
-
-#if 0
-#pragma mark -
-#pragma mark Logical...
-#endif
-
-    void AND(int Rd, int Rs, int Rt);
-    void ANDI(int Rd, int Rs, uint16_t imm);
-    void OR(int Rd, int Rs, int Rt);
-    void ORI(int Rt, int Rs, uint16_t imm);
-    void NOR(int Rd, int Rs, int Rt);
-    void NOT(int Rd, int Rs);
-    void XOR(int Rd, int Rs, int Rt);
-    void XORI(int Rt, int Rs, uint16_t imm);
-
-    void SLL(int Rd, int Rt, int shft);
-    void SLLV(int Rd, int Rt, int Rs);
-    void SRL(int Rd, int Rt, int shft);
-    void SRLV(int Rd, int Rt, int Rs);
-    void SRA(int Rd, int Rt, int shft);
-    void SRAV(int Rd, int Rt, int Rs);
-    void ROTR(int Rd, int Rt, int shft);    // mips32r2
-    void ROTRV(int Rd, int Rt, int Rs);     // mips32r2
-    void RORsyn(int Rd, int Rs, int Rt);    // synthetic: d = s rotated by t
-    void RORIsyn(int Rd, int Rt, int rot);  // synthetic: d = s rotated by immed
-
-    void CLO(int Rd, int Rs);
-    void CLZ(int Rd, int Rs);
-    void WSBH(int Rd, int Rt);
-
-
-#if 0
-#pragma mark -
-#pragma mark Load/store...
-#endif
-
-    void LW(int Rt, int Rbase, int16_t offset);
-    void SW(int Rt, int Rbase, int16_t offset);
-    void LB(int Rt, int Rbase, int16_t offset);
-    void LBU(int Rt, int Rbase, int16_t offset);
-    void SB(int Rt, int Rbase, int16_t offset);
-    void LH(int Rt, int Rbase, int16_t offset);
-    void LHU(int Rt, int Rbase, int16_t offset);
-    void SH(int Rt, int Rbase, int16_t offset);
-    void LUI(int Rt, int16_t offset);
-
-#if 0
-#pragma mark -
-#pragma mark Register moves...
-#endif
-
-    void MOVE(int Rd, int Rs);
-    void MOVN(int Rd, int Rs, int Rt);
-    void MOVZ(int Rd, int Rs, int Rt);
-    void MFHI(int Rd);
-    void MFLO(int Rd);
-    void MTHI(int Rs);
-    void MTLO(int Rs);
-
-#if 0
-#pragma mark -
-#pragma mark Branch...
-#endif
-
-    void B(const char* label);
-    void BEQ(int Rs, int Rt, const char* label);
-    void BNE(int Rs, int Rt, const char* label);
-    void BGEZ(int Rs, const char* label);
-    void BGTZ(int Rs, const char* label);
-    void BLEZ(int Rs, const char* label);
-    void BLTZ(int Rs, const char* label);
-    void JR(int Rs);
-
-
-#if 0
-#pragma mark -
-#pragma mark Synthesized Branch...
-#endif
-
-    // synthetic variants of above (using slt & friends)
-    void BEQZ(int Rs, const char* label);
-    void BNEZ(int Rs, const char* label);
-    void BGE(int Rs, int Rt, const char* label);
-    void BGEU(int Rs, int Rt, const char* label);
-    void BGT(int Rs, int Rt, const char* label);
-    void BGTU(int Rs, int Rt, const char* label);
-    void BLE(int Rs, int Rt, const char* label);
-    void BLEU(int Rs, int Rt, const char* label);
-    void BLT(int Rs, int Rt, const char* label);
-    void BLTU(int Rs, int Rt, const char* label);
-
-#if 0
-#pragma mark -
-#pragma mark Misc...
-#endif
-
-    void NOP(void);
-    void NOP2(void);
-    void UNIMPL(void);
-
-
-
-
-
-protected:
-    virtual void string_detab(char *s);
-    virtual void string_pad(char *s, int padded_len);
-
-    ArmToMipsAssembler *mParent;
-    sp<Assembly>    mAssembly;
-    uint32_t*       mBase;
-    uint32_t*       mPC;
-    uint32_t*       mPrologPC;
-    int64_t         mDuration;
-
-    struct branch_target_t {
-        inline branch_target_t() : label(0), pc(0) { }
-        inline branch_target_t(const char* l, uint32_t* p)
-            : label(l), pc(p) { }
-        const char* label;
-        uint32_t*   pc;
-    };
-
-    Vector<branch_target_t>                 mBranchTargets;
-    KeyedVector< const char*, uint32_t* >   mLabels;
-    KeyedVector< uint32_t*, const char* >   mLabelsInverseMapping;
-    KeyedVector< uint32_t*, const char* >   mComments;
-
-
-
-
-    // opcode field of all instructions
-    enum opcode_field {
-        spec_op, regimm_op, j_op, jal_op,           // 00
-        beq_op, bne_op, blez_op, bgtz_op,
-        addi_op, addiu_op, slti_op, sltiu_op,       // 08
-        andi_op, ori_op, xori_op, lui_op,
-        cop0_op, cop1_op, cop2_op, cop1x_op,        // 10
-        beql_op, bnel_op, blezl_op, bgtzl_op,
-        daddi_op, daddiu_op, ldl_op, ldr_op,        // 18
-        spec2_op, jalx_op, mdmx_op, spec3_op,
-        lb_op, lh_op, lwl_op, lw_op,                // 20
-        lbu_op, lhu_op, lwr_op, lwu_op,
-        sb_op, sh_op, swl_op, sw_op,                // 28
-        sdl_op, sdr_op, swr_op, cache_op,
-        ll_op, lwc1_op, lwc2_op, pref_op,           // 30
-        lld_op, ldc1_op, ldc2_op, ld_op,
-        sc_op, swc1_op, swc2_op, rsrv_3b_op,        // 38
-        scd_op, sdc1_op, sdc2_op, sd_op
-    };
-
-
-    // func field for special opcode
-    enum func_spec_op {
-        sll_fn, movc_fn, srl_fn, sra_fn,            // 00
-        sllv_fn, pmon_fn, srlv_fn, srav_fn,
-        jr_fn, jalr_fn, movz_fn, movn_fn,           // 08
-        syscall_fn, break_fn, spim_fn, sync_fn,
-        mfhi_fn, mthi_fn, mflo_fn, mtlo_fn,         // 10
-        dsllv_fn, rsrv_spec_2, dsrlv_fn, dsrav_fn,
-        mult_fn, multu_fn, div_fn, divu_fn,         // 18
-        dmult_fn, dmultu_fn, ddiv_fn, ddivu_fn,
-        add_fn, addu_fn, sub_fn, subu_fn,           // 20
-        and_fn, or_fn, xor_fn, nor_fn,
-        rsrv_spec_3, rsrv_spec_4, slt_fn, sltu_fn,  // 28
-        dadd_fn, daddu_fn, dsub_fn, dsubu_fn,
-        tge_fn, tgeu_fn, tlt_fn, tltu_fn,           // 30
-        teq_fn, rsrv_spec_5, tne_fn, rsrv_spec_6,
-        dsll_fn, rsrv_spec_7, dsrl_fn, dsra_fn,     // 38
-        dsll32_fn, rsrv_spec_8, dsrl32_fn, dsra32_fn
-    };
-
-    // func field for spec2 opcode
-    enum func_spec2_op {
-        madd_fn, maddu_fn, mul_fn, rsrv_spec2_3,
-        msub_fn, msubu_fn,
-        clz_fn = 0x20, clo_fn,
-        dclz_fn = 0x24, dclo_fn,
-        sdbbp_fn = 0x3f
-    };
-
-    // func field for spec3 opcode
-    enum func_spec3_op {
-        ext_fn, dextm_fn, dextu_fn, dext_fn,
-        ins_fn, dinsm_fn, dinsu_fn, dins_fn,
-        bshfl_fn = 0x20,
-        dbshfl_fn = 0x24,
-        rdhwr_fn = 0x3b
-    };
-
-    // sa field for spec3 opcodes, with BSHFL function
-    enum func_spec3_bshfl {
-        wsbh_fn = 0x02,
-        seb_fn = 0x10,
-        seh_fn = 0x18
-    };
-
-    // rt field of regimm opcodes.
-    enum regimm_fn {
-        bltz_fn, bgez_fn, bltzl_fn, bgezl_fn,
-        rsrv_ri_fn4, rsrv_ri_fn5, rsrv_ri_fn6, rsrv_ri_fn7,
-        tgei_fn, tgeiu_fn, tlti_fn, tltiu_fn,
-        teqi_fn, rsrv_ri_fn_0d, tnei_fn, rsrv_ri_fn0f,
-        bltzal_fn, bgezal_fn, bltzall_fn, bgezall_fn,
-        bposge32_fn= 0x1c,
-        synci_fn = 0x1f
-    };
-
-
-    // func field for mad opcodes (MIPS IV).
-    enum mad_func {
-        madd_fp_op      = 0x08, msub_fp_op      = 0x0a,
-        nmadd_fp_op     = 0x0c, nmsub_fp_op     = 0x0e
-    };
-
-
-    enum mips_inst_shifts {
-        OP_SHF       = 26,
-        JTARGET_SHF  = 0,
-        RS_SHF       = 21,
-        RT_SHF       = 16,
-        RD_SHF       = 11,
-        RE_SHF       = 6,
-        SA_SHF       = RE_SHF,  // synonym
-        IMM_SHF      = 0,
-        FUNC_SHF     = 0,
-
-        // mask values
-        MSK_16       = 0xffff,
-
-
-        CACHEOP_SHF  = 18,
-        CACHESEL_SHF = 16,
-    };
-};
-
-enum mips_regnames {
-    R_zero = 0,
-            R_at,   R_v0,   R_v1,   R_a0,   R_a1,   R_a2,   R_a3,
-#if __mips_isa_rev < 6
-    R_t0,   R_t1,   R_t2,   R_t3,   R_t4,   R_t5,   R_t6,   R_t7,
-#else
-    R_a4,   R_a5,   R_a6,   R_a7,   R_t0,   R_t1,   R_t2,   R_t3,
-#endif
-    R_s0,   R_s1,   R_s2,   R_s3,   R_s4,   R_s5,   R_s6,   R_s7,
-    R_t8,   R_t9,   R_k0,   R_k1,   R_gp,   R_sp,   R_s8,   R_ra,
-    R_lr = R_s8,
-
-    // arm regs 0-15 are mips regs 2-17 (meaning s0 & s1 are used)
-    R_at2  = R_s2,    // R_at2 = 18 = s2
-    R_cmp  = R_s3,    // R_cmp = 19 = s3
-    R_cmp2 = R_s4     // R_cmp2 = 20 = s4
-};
-
-
-
-}; // namespace android
-
-#endif //ANDROID_MIPSASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/armreg.h b/libpixelflinger/codeflinger/armreg.h
deleted file mode 100644
index fde81ba..0000000
--- a/libpixelflinger/codeflinger/armreg.h
+++ /dev/null
@@ -1,300 +0,0 @@
-/*	$NetBSD: armreg.h,v 1.28 2003/10/31 16:30:15 scw Exp $	*/
-
-/*-
- * Copyright (c) 1998, 2001 Ben Harris
- * Copyright (c) 1994-1996 Mark Brinicombe.
- * Copyright (c) 1994 Brini.
- * All rights reserved.
- *
- * This code is derived from software written for Brini by Mark Brinicombe
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by Brini.
- * 4. The name of the company nor the name of the author may be used to
- *    endorse or promote products derived from this software without specific
- *    prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD: /repoman/r/ncvs/src/sys/arm/include/armreg.h,v 1.3 2005/11/21 19:06:25 cognet Exp $
- */
-
-#ifndef MACHINE_ARMREG_H
-#define MACHINE_ARMREG_H
-#define INSN_SIZE	4
-#define INSN_COND_MASK	0xf0000000	/* Condition mask */
-#define PSR_MODE        0x0000001f      /* mode mask */
-#define PSR_USR26_MODE  0x00000000
-#define PSR_FIQ26_MODE  0x00000001
-#define PSR_IRQ26_MODE  0x00000002
-#define PSR_SVC26_MODE  0x00000003
-#define PSR_USR32_MODE  0x00000010
-#define PSR_FIQ32_MODE  0x00000011
-#define PSR_IRQ32_MODE  0x00000012
-#define PSR_SVC32_MODE  0x00000013
-#define PSR_ABT32_MODE  0x00000017
-#define PSR_UND32_MODE  0x0000001b
-#define PSR_SYS32_MODE  0x0000001f
-#define PSR_32_MODE     0x00000010
-#define PSR_FLAGS	0xf0000000    /* flags */
-
-#define PSR_C_bit (1 << 29)       /* carry */
-
-/* The high-order byte is always the implementor */
-#define CPU_ID_IMPLEMENTOR_MASK	0xff000000
-#define CPU_ID_ARM_LTD		0x41000000 /* 'A' */
-#define CPU_ID_DEC		0x44000000 /* 'D' */
-#define CPU_ID_INTEL		0x69000000 /* 'i' */
-#define	CPU_ID_TI		0x54000000 /* 'T' */
-
-/* How to decide what format the CPUID is in. */
-#define CPU_ID_ISOLD(x)		(((x) & 0x0000f000) == 0x00000000)
-#define CPU_ID_IS7(x)		(((x) & 0x0000f000) == 0x00007000)
-#define CPU_ID_ISNEW(x)		(!CPU_ID_ISOLD(x) && !CPU_ID_IS7(x))
-
-/* On ARM3 and ARM6, this byte holds the foundry ID. */
-#define CPU_ID_FOUNDRY_MASK	0x00ff0000
-#define CPU_ID_FOUNDRY_VLSI	0x00560000
-
-/* On ARM7 it holds the architecture and variant (sub-model) */
-#define CPU_ID_7ARCH_MASK	0x00800000
-#define CPU_ID_7ARCH_V3		0x00000000
-#define CPU_ID_7ARCH_V4T	0x00800000
-#define CPU_ID_7VARIANT_MASK	0x007f0000
-
-/* On more recent ARMs, it does the same, but in a different format */
-#define CPU_ID_ARCH_MASK	0x000f0000
-#define CPU_ID_ARCH_V3		0x00000000
-#define CPU_ID_ARCH_V4		0x00010000
-#define CPU_ID_ARCH_V4T		0x00020000
-#define CPU_ID_ARCH_V5		0x00030000
-#define CPU_ID_ARCH_V5T		0x00040000
-#define CPU_ID_ARCH_V5TE	0x00050000
-#define CPU_ID_VARIANT_MASK	0x00f00000
-
-/* Next three nybbles are part number */
-#define CPU_ID_PARTNO_MASK	0x0000fff0
-
-/* Intel XScale has sub fields in part number */
-#define CPU_ID_XSCALE_COREGEN_MASK	0x0000e000 /* core generation */
-#define CPU_ID_XSCALE_COREREV_MASK	0x00001c00 /* core revision */
-#define CPU_ID_XSCALE_PRODUCT_MASK	0x000003f0 /* product number */
-
-/* And finally, the revision number. */
-#define CPU_ID_REVISION_MASK	0x0000000f
-
-/* Individual CPUs are probably best IDed by everything but the revision. */
-#define CPU_ID_CPU_MASK		0xfffffff0
-
-/* Fake CPU IDs for ARMs without CP15 */
-#define CPU_ID_ARM2		0x41560200
-#define CPU_ID_ARM250		0x41560250
-
-/* Pre-ARM7 CPUs -- [15:12] == 0 */
-#define CPU_ID_ARM3		0x41560300
-#define CPU_ID_ARM600		0x41560600
-#define CPU_ID_ARM610		0x41560610
-#define CPU_ID_ARM620		0x41560620
-
-/* ARM7 CPUs -- [15:12] == 7 */
-#define CPU_ID_ARM700		0x41007000 /* XXX This is a guess. */
-#define CPU_ID_ARM710		0x41007100
-#define CPU_ID_ARM7500		0x41027100 /* XXX This is a guess. */
-#define CPU_ID_ARM710A		0x41047100 /* inc ARM7100 */
-#define CPU_ID_ARM7500FE	0x41077100
-#define CPU_ID_ARM710T		0x41807100
-#define CPU_ID_ARM720T		0x41807200
-#define CPU_ID_ARM740T8K	0x41807400 /* XXX no MMU, 8KB cache */
-#define CPU_ID_ARM740T4K	0x41817400 /* XXX no MMU, 4KB cache */
-
-/* Post-ARM7 CPUs */
-#define CPU_ID_ARM810		0x41018100
-#define CPU_ID_ARM920T		0x41129200
-#define CPU_ID_ARM920T_ALT	0x41009200
-#define CPU_ID_ARM922T		0x41029220
-#define CPU_ID_ARM940T		0x41029400 /* XXX no MMU */
-#define CPU_ID_ARM946ES		0x41049460 /* XXX no MMU */
-#define	CPU_ID_ARM966ES		0x41049660 /* XXX no MMU */
-#define	CPU_ID_ARM966ESR1	0x41059660 /* XXX no MMU */
-#define CPU_ID_ARM1020E		0x4115a200 /* (AKA arm10 rev 1) */
-#define CPU_ID_ARM1022ES	0x4105a220
-#define CPU_ID_SA110		0x4401a100
-#define CPU_ID_SA1100		0x4401a110
-#define	CPU_ID_TI925T		0x54029250
-#define CPU_ID_SA1110		0x6901b110
-#define CPU_ID_IXP1200		0x6901c120
-#define CPU_ID_80200		0x69052000
-#define CPU_ID_PXA250    	0x69052100 /* sans core revision */
-#define CPU_ID_PXA210    	0x69052120
-#define CPU_ID_PXA250A		0x69052100 /* 1st version Core */
-#define CPU_ID_PXA210A		0x69052120 /* 1st version Core */
-#define CPU_ID_PXA250B		0x69052900 /* 3rd version Core */
-#define CPU_ID_PXA210B		0x69052920 /* 3rd version Core */
-#define CPU_ID_PXA250C		0x69052d00 /* 4th version Core */
-#define CPU_ID_PXA210C		0x69052d20 /* 4th version Core */
-#define	CPU_ID_80321_400	0x69052420
-#define	CPU_ID_80321_600	0x69052430
-#define	CPU_ID_80321_400_B0	0x69052c20
-#define	CPU_ID_80321_600_B0	0x69052c30
-#define	CPU_ID_IXP425_533	0x690541c0
-#define	CPU_ID_IXP425_400	0x690541d0
-#define	CPU_ID_IXP425_266	0x690541f0
-
-/* ARM3-specific coprocessor 15 registers */
-#define ARM3_CP15_FLUSH		1
-#define ARM3_CP15_CONTROL	2
-#define ARM3_CP15_CACHEABLE	3
-#define ARM3_CP15_UPDATEABLE	4
-#define ARM3_CP15_DISRUPTIVE	5	
-
-/* ARM3 Control register bits */
-#define ARM3_CTL_CACHE_ON	0x00000001
-#define ARM3_CTL_SHARED		0x00000002
-#define ARM3_CTL_MONITOR	0x00000004
-
-/*
- * Post-ARM3 CP15 registers:
- *
- *	1	Control register
- *
- *	2	Translation Table Base
- *
- *	3	Domain Access Control
- *
- *	4	Reserved
- *
- *	5	Fault Status
- *
- *	6	Fault Address
- *
- *	7	Cache/write-buffer Control
- *
- *	8	TLB Control
- *
- *	9	Cache Lockdown
- *
- *	10	TLB Lockdown
- *
- *	11	Reserved
- *
- *	12	Reserved
- *
- *	13	Process ID (for FCSE)
- *
- *	14	Reserved
- *
- *	15	Implementation Dependent
- */
-
-/* Some of the definitions below need cleaning up for V3/V4 architectures */
-
-/* CPU control register (CP15 register 1) */
-#define CPU_CONTROL_MMU_ENABLE	0x00000001 /* M: MMU/Protection unit enable */
-#define CPU_CONTROL_AFLT_ENABLE	0x00000002 /* A: Alignment fault enable */
-#define CPU_CONTROL_DC_ENABLE	0x00000004 /* C: IDC/DC enable */
-#define CPU_CONTROL_WBUF_ENABLE 0x00000008 /* W: Write buffer enable */
-#define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */
-#define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */
-#define CPU_CONTROL_LABT_ENABLE 0x00000040 /* L: Late abort enable */
-#define CPU_CONTROL_BEND_ENABLE 0x00000080 /* B: Big-endian mode */
-#define CPU_CONTROL_SYST_ENABLE 0x00000100 /* S: System protection bit */
-#define CPU_CONTROL_ROM_ENABLE	0x00000200 /* R: ROM protection bit */
-#define CPU_CONTROL_CPCLK	0x00000400 /* F: Implementation defined */
-#define CPU_CONTROL_BPRD_ENABLE 0x00000800 /* Z: Branch prediction enable */
-#define CPU_CONTROL_IC_ENABLE   0x00001000 /* I: IC enable */
-#define CPU_CONTROL_VECRELOC	0x00002000 /* V: Vector relocation */
-#define CPU_CONTROL_ROUNDROBIN	0x00004000 /* RR: Predictable replacement */
-#define CPU_CONTROL_V4COMPAT	0x00008000 /* L4: ARMv4 compat LDR R15 etc */
-
-#define CPU_CONTROL_IDC_ENABLE	CPU_CONTROL_DC_ENABLE
-
-/* XScale Auxillary Control Register (CP15 register 1, opcode2 1) */
-#define	XSCALE_AUXCTL_K		0x00000001 /* dis. write buffer coalescing */
-#define	XSCALE_AUXCTL_P		0x00000002 /* ECC protect page table access */
-#define	XSCALE_AUXCTL_MD_WB_RA	0x00000000 /* mini-D$ wb, read-allocate */
-#define	XSCALE_AUXCTL_MD_WB_RWA	0x00000010 /* mini-D$ wb, read/write-allocate */
-#define	XSCALE_AUXCTL_MD_WT	0x00000020 /* mini-D$ wt, read-allocate */
-#define	XSCALE_AUXCTL_MD_MASK	0x00000030
-
-/* Cache type register definitions */
-#define	CPU_CT_ISIZE(x)		((x) & 0xfff)		/* I$ info */
-#define	CPU_CT_DSIZE(x)		(((x) >> 12) & 0xfff)	/* D$ info */
-#define	CPU_CT_S		(1U << 24)		/* split cache */
-#define	CPU_CT_CTYPE(x)		(((x) >> 25) & 0xf)	/* cache type */
-
-#define	CPU_CT_CTYPE_WT		0	/* write-through */
-#define	CPU_CT_CTYPE_WB1	1	/* write-back, clean w/ read */
-#define	CPU_CT_CTYPE_WB2	2	/* w/b, clean w/ cp15,7 */
-#define	CPU_CT_CTYPE_WB6	6	/* w/b, cp15,7, lockdown fmt A */
-#define	CPU_CT_CTYPE_WB7	7	/* w/b, cp15,7, lockdown fmt B */
-
-#define	CPU_CT_xSIZE_LEN(x)	((x) & 0x3)		/* line size */
-#define	CPU_CT_xSIZE_M		(1U << 2)		/* multiplier */
-#define	CPU_CT_xSIZE_ASSOC(x)	(((x) >> 3) & 0x7)	/* associativity */
-#define	CPU_CT_xSIZE_SIZE(x)	(((x) >> 6) & 0x7)	/* size */
-
-/* Fault status register definitions */
-
-#define FAULT_TYPE_MASK 0x0f
-#define FAULT_USER      0x10
-
-#define FAULT_WRTBUF_0  0x00 /* Vector Exception */
-#define FAULT_WRTBUF_1  0x02 /* Terminal Exception */
-#define FAULT_BUSERR_0  0x04 /* External Abort on Linefetch -- Section */
-#define FAULT_BUSERR_1  0x06 /* External Abort on Linefetch -- Page */
-#define FAULT_BUSERR_2  0x08 /* External Abort on Non-linefetch -- Section */
-#define FAULT_BUSERR_3  0x0a /* External Abort on Non-linefetch -- Page */
-#define FAULT_BUSTRNL1  0x0c /* External abort on Translation -- Level 1 */
-#define FAULT_BUSTRNL2  0x0e /* External abort on Translation -- Level 2 */
-#define FAULT_ALIGN_0   0x01 /* Alignment */
-#define FAULT_ALIGN_1   0x03 /* Alignment */
-#define FAULT_TRANS_S   0x05 /* Translation -- Section */
-#define FAULT_TRANS_P   0x07 /* Translation -- Page */
-#define FAULT_DOMAIN_S  0x09 /* Domain -- Section */
-#define FAULT_DOMAIN_P  0x0b /* Domain -- Page */
-#define FAULT_PERM_S    0x0d /* Permission -- Section */
-#define FAULT_PERM_P    0x0f /* Permission -- Page */
-
-#define	FAULT_IMPRECISE	0x400	/* Imprecise exception (XSCALE) */
-
-/*
- * Address of the vector page, low and high versions.
- */
-#define	ARM_VECTORS_LOW		0x00000000U
-#define	ARM_VECTORS_HIGH	0xffff0000U
-
-/*
- * ARM Instructions
- *
- *       3 3 2 2 2                              
- *       1 0 9 8 7                                                     0
- *      +-------+-------------------------------------------------------+
- *      | cond  |              instruction dependant                    |
- *      |c c c c|                                                       |
- *      +-------+-------------------------------------------------------+
- */
-
-#define INSN_SIZE		4		/* Always 4 bytes */
-#define INSN_COND_MASK		0xf0000000	/* Condition mask */
-#define INSN_COND_AL		0xe0000000	/* Always condition */
-
-#endif /* !MACHINE_ARMREG_H */
diff --git a/libpixelflinger/codeflinger/blending.cpp b/libpixelflinger/codeflinger/blending.cpp
deleted file mode 100644
index 2cbb00f..0000000
--- a/libpixelflinger/codeflinger/blending.cpp
+++ /dev/null
@@ -1,674 +0,0 @@
-/* libs/pixelflinger/codeflinger/blending.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "pixelflinger-code"
-
-#include <assert.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-
-#include <android-base/macros.h>
-#include <log/log.h>
-
-#include "GGLAssembler.h"
-
-namespace android {
-
-void GGLAssembler::build_fog(
-                        component_t& temp,      // incomming fragment / output
-                        int component,
-                        Scratch& regs)
-{
-   if (mInfo[component].fog) {
-        Scratch scratches(registerFile());
-        comment("fog");
-
-        integer_t fragment(temp.reg, temp.h, temp.flags);
-        if (!(temp.flags & CORRUPTIBLE)) {
-            temp.reg = regs.obtain();
-            temp.flags |= CORRUPTIBLE;
-        }
-
-        integer_t fogColor(scratches.obtain(), 8, CORRUPTIBLE); 
-        LDRB(AL, fogColor.reg, mBuilderContext.Rctx,
-                immed12_pre(GGL_OFFSETOF(state.fog.color[component])));
-
-        integer_t factor(scratches.obtain(), 16, CORRUPTIBLE);
-        CONTEXT_LOAD(factor.reg, generated_vars.f);
-
-        // clamp fog factor (TODO: see if there is a way to guarantee
-        // we won't overflow, when setting the iterators)
-        BIC(AL, 0, factor.reg, factor.reg, reg_imm(factor.reg, ASR, 31));
-        CMP(AL, factor.reg, imm( 0x10000 ));
-        MOV(HS, 0, factor.reg, imm( 0x10000 ));
-
-        build_blendFOneMinusF(temp, factor, fragment, fogColor);
-    }
-}
-
-void GGLAssembler::build_blending(
-                        component_t& temp,      // incomming fragment / output
-                        const pixel_t& pixel,   // framebuffer
-                        int component,
-                        Scratch& regs)
-{
-   if (!mInfo[component].blend)
-        return;
-        
-    int fs = component==GGLFormat::ALPHA ? mBlendSrcA : mBlendSrc;
-    int fd = component==GGLFormat::ALPHA ? mBlendDstA : mBlendDst;
-    if (fs==GGL_SRC_ALPHA_SATURATE && component==GGLFormat::ALPHA)
-        fs = GGL_ONE;
-    const int blending = blending_codes(fs, fd);
-    if (!temp.size()) {
-        // here, blending will produce something which doesn't depend on
-        // that component (eg: GL_ZERO:GL_*), so the register has not been
-        // allocated yet. Will never be used as a source.
-        temp = component_t(regs.obtain(), CORRUPTIBLE);
-    }
-
-    // we are doing real blending...
-    // fb:          extracted dst
-    // fragment:    extracted src
-    // temp:        component_t(fragment) and result
-
-    // scoped register allocator
-    Scratch scratches(registerFile());
-    comment("blending");
-
-    // we can optimize these cases a bit...
-    // (1) saturation is not needed
-    // (2) we can use only one multiply instead of 2
-    // (3) we can reduce the register pressure
-    //      R = S*f + D*(1-f) = (S-D)*f + D
-    //      R = S*(1-f) + D*f = (D-S)*f + S
-
-    const bool same_factor_opt1 =
-        (fs==GGL_DST_COLOR && fd==GGL_ONE_MINUS_DST_COLOR) ||
-        (fs==GGL_SRC_COLOR && fd==GGL_ONE_MINUS_SRC_COLOR) ||
-        (fs==GGL_DST_ALPHA && fd==GGL_ONE_MINUS_DST_ALPHA) ||
-        (fs==GGL_SRC_ALPHA && fd==GGL_ONE_MINUS_SRC_ALPHA);
-
-    const bool same_factor_opt2 =
-        (fs==GGL_ONE_MINUS_DST_COLOR && fd==GGL_DST_COLOR) ||
-        (fs==GGL_ONE_MINUS_SRC_COLOR && fd==GGL_SRC_COLOR) || 
-        (fs==GGL_ONE_MINUS_DST_ALPHA && fd==GGL_DST_ALPHA) ||
-        (fs==GGL_ONE_MINUS_SRC_ALPHA && fd==GGL_SRC_ALPHA);
-
-
-    // XXX: we could also optimize these cases:
-    // R = S*f + D*f = (S+D)*f
-    // R = S*(1-f) + D*(1-f) = (S+D)*(1-f)
-    // R = S*D + D*S = 2*S*D
-
-
-    // see if we need to extract 'component' from the destination (fb)
-    integer_t fb;
-    if (blending & (BLEND_DST|FACTOR_DST)) { 
-        fb.setTo(scratches.obtain(), 32); 
-        extract(fb, pixel, component);
-        if (mDithering) {
-            // XXX: maybe what we should do instead, is simply
-            // expand fb -or- fragment to the larger of the two
-            if (fb.size() < temp.size()) {
-                // for now we expand 'fb' to min(fragment, 8)
-                int new_size = temp.size() < 8 ? temp.size() : 8;
-                expand(fb, fb, new_size);
-            }
-        }
-    }
-
-
-    // convert input fragment to integer_t
-    if (temp.l && (temp.flags & CORRUPTIBLE)) {
-        MOV(AL, 0, temp.reg, reg_imm(temp.reg, LSR, temp.l));
-        temp.h -= temp.l;
-        temp.l = 0;
-    }
-    integer_t fragment(temp.reg, temp.size(), temp.flags);
-
-    // if not done yet, convert input fragment to integer_t
-    if (temp.l) {
-        // here we know temp is not CORRUPTIBLE
-        fragment.reg = scratches.obtain();
-        MOV(AL, 0, fragment.reg, reg_imm(temp.reg, LSR, temp.l));
-        fragment.flags |= CORRUPTIBLE;
-    }
-
-    if (!(temp.flags & CORRUPTIBLE)) {
-        // temp is not corruptible, but since it's the destination it
-        // will be modified, so we need to allocate a new register.
-        temp.reg = regs.obtain();
-        temp.flags &= ~CORRUPTIBLE;
-        fragment.flags &= ~CORRUPTIBLE;
-    }
-
-    if ((blending & BLEND_SRC) && !same_factor_opt1) {
-        // source (fragment) is needed for the blending stage
-        // so it's not CORRUPTIBLE (unless we're doing same_factor_opt1)
-        fragment.flags &= ~CORRUPTIBLE;
-    }
-
-
-    if (same_factor_opt1) {
-        //  R = S*f + D*(1-f) = (S-D)*f + D
-        integer_t factor;
-        build_blend_factor(factor, fs, 
-                component, pixel, fragment, fb, scratches);
-        // fb is always corruptible from this point
-        fb.flags |= CORRUPTIBLE;
-        build_blendFOneMinusF(temp, factor, fragment, fb);
-    } else if (same_factor_opt2) {
-        //  R = S*(1-f) + D*f = (D-S)*f + S
-        integer_t factor;
-        // fb is always corrruptible here
-        fb.flags |= CORRUPTIBLE;
-        build_blend_factor(factor, fd,
-                component, pixel, fragment, fb, scratches);
-        build_blendOneMinusFF(temp, factor, fragment, fb);
-    } else {
-        integer_t src_factor;
-        integer_t dst_factor;
-
-        // if destination (fb) is not needed for the blending stage, 
-        // then it can be marked as CORRUPTIBLE
-        if (!(blending & BLEND_DST)) {
-            fb.flags |= CORRUPTIBLE;
-        }
-
-        // XXX: try to mark some registers as CORRUPTIBLE
-        // in most case we could make those corruptible
-        // when we're processing the last component
-        // but not always, for instance
-        //    when fragment is constant and not reloaded
-        //    when fb is needed for logic-ops or masking
-        //    when a register is aliased (for instance with mAlphaSource)
-
-        // blend away...
-        if (fs==GGL_ZERO) {
-            if (fd==GGL_ZERO) {         // R = 0
-                // already taken care of
-            } else if (fd==GGL_ONE) {   // R = D
-                // already taken care of
-            } else {                    // R = D*fd
-                // compute fd
-                build_blend_factor(dst_factor, fd,
-                        component, pixel, fragment, fb, scratches);
-                mul_factor(temp, fb, dst_factor);
-            }
-        } else if (fs==GGL_ONE) {
-            if (fd==GGL_ZERO) {         // R = S
-                // NOP, taken care of
-            } else if (fd==GGL_ONE) {   // R = S + D
-                component_add(temp, fb, fragment); // args order matters
-                component_sat(temp);
-            } else {                    // R = S + D*fd
-                // compute fd
-                build_blend_factor(dst_factor, fd,
-                        component, pixel, fragment, fb, scratches);
-                mul_factor_add(temp, fb, dst_factor, component_t(fragment));
-                component_sat(temp);
-            }
-        } else {
-            // compute fs
-            build_blend_factor(src_factor, fs, 
-                    component, pixel, fragment, fb, scratches);
-            if (fd==GGL_ZERO) {         // R = S*fs
-                mul_factor(temp, fragment, src_factor);
-            } else if (fd==GGL_ONE) {   // R = S*fs + D
-                mul_factor_add(temp, fragment, src_factor, component_t(fb));
-                component_sat(temp);
-            } else {                    // R = S*fs + D*fd
-                mul_factor(temp, fragment, src_factor);
-                if (scratches.isUsed(src_factor.reg))
-                    scratches.recycle(src_factor.reg);
-                // compute fd
-                build_blend_factor(dst_factor, fd,
-                        component, pixel, fragment, fb, scratches);
-                mul_factor_add(temp, fb, dst_factor, temp);
-                if (!same_factor_opt1 && !same_factor_opt2) {
-                    component_sat(temp);
-                }
-            }
-        }
-    }
-
-    // now we can be corrupted (it's the dest)
-    temp.flags |= CORRUPTIBLE;
-}
-
-void GGLAssembler::build_blend_factor(
-        integer_t& factor, int f, int component,
-        const pixel_t& dst_pixel,
-        integer_t& fragment,
-        integer_t& fb,
-        Scratch& scratches)
-{
-    integer_t src_alpha(fragment);
-
-    // src_factor/dst_factor won't be used after blending,
-    // so it's fine to mark them as CORRUPTIBLE (if not aliased)
-    factor.flags |= CORRUPTIBLE;
-
-    switch(f) {
-    case GGL_ONE_MINUS_SRC_ALPHA:
-    case GGL_SRC_ALPHA:
-        if (component==GGLFormat::ALPHA && !isAlphaSourceNeeded()) {
-            // we're processing alpha, so we already have
-            // src-alpha in fragment, and we need src-alpha just this time.
-        } else {
-           // alpha-src will be needed for other components
-            if (!mBlendFactorCached || mBlendFactorCached==f) {
-                src_alpha = mAlphaSource;
-                factor = mAlphaSource;
-                factor.flags &= ~CORRUPTIBLE;           
-                // we already computed the blend factor before, nothing to do.
-                if (mBlendFactorCached)
-                    return;
-                // this is the first time, make sure to compute the blend
-                // factor properly.
-                mBlendFactorCached = f;
-                break;
-            } else {
-                // we have a cached alpha blend factor, but we want another one,
-                // this should really not happen because by construction,
-                // we cannot have BOTH source and destination
-                // blend factors use ALPHA *and* ONE_MINUS_ALPHA (because
-                // the blending stage uses the f/(1-f) optimization
-                
-                // for completeness, we handle this case though. Since there
-                // are only 2 choices, this meens we want "the other one"
-                // (1-factor)
-                factor = mAlphaSource;
-                factor.flags &= ~CORRUPTIBLE;           
-                RSB(AL, 0, factor.reg, factor.reg, imm((1<<factor.s)));
-                mBlendFactorCached = f;
-                return;
-            }                
-        }
-        FALLTHROUGH_INTENDED;
-    case GGL_ONE_MINUS_DST_COLOR:
-    case GGL_DST_COLOR:
-    case GGL_ONE_MINUS_SRC_COLOR:
-    case GGL_SRC_COLOR:
-    case GGL_ONE_MINUS_DST_ALPHA:
-    case GGL_DST_ALPHA:
-    case GGL_SRC_ALPHA_SATURATE:
-        // help us find out what register we can use for the blend-factor
-        // CORRUPTIBLE registers are chosen first, or a new one is allocated.
-        if (fragment.flags & CORRUPTIBLE) {
-            factor.setTo(fragment.reg, 32, CORRUPTIBLE);
-            fragment.flags &= ~CORRUPTIBLE;
-        } else if (fb.flags & CORRUPTIBLE) {
-            factor.setTo(fb.reg, 32, CORRUPTIBLE);
-            fb.flags &= ~CORRUPTIBLE;
-        } else {
-            factor.setTo(scratches.obtain(), 32, CORRUPTIBLE);
-        } 
-        break;
-    }
-
-    // XXX: doesn't work if size==1
-
-    switch(f) {
-    case GGL_ONE_MINUS_DST_COLOR:
-    case GGL_DST_COLOR:
-        factor.s = fb.s;
-        ADD(AL, 0, factor.reg, fb.reg, reg_imm(fb.reg, LSR, fb.s-1));
-        break;
-    case GGL_ONE_MINUS_SRC_COLOR:
-    case GGL_SRC_COLOR:
-        factor.s = fragment.s;
-        ADD(AL, 0, factor.reg, fragment.reg,
-            reg_imm(fragment.reg, LSR, fragment.s-1));
-        break;
-    case GGL_ONE_MINUS_SRC_ALPHA:
-    case GGL_SRC_ALPHA:
-        factor.s = src_alpha.s;
-        ADD(AL, 0, factor.reg, src_alpha.reg,
-                reg_imm(src_alpha.reg, LSR, src_alpha.s-1));
-        break;
-    case GGL_ONE_MINUS_DST_ALPHA:
-    case GGL_DST_ALPHA:
-        // XXX: should be precomputed
-        extract(factor, dst_pixel, GGLFormat::ALPHA);
-        ADD(AL, 0, factor.reg, factor.reg,
-                reg_imm(factor.reg, LSR, factor.s-1));
-        break;
-    case GGL_SRC_ALPHA_SATURATE:
-        // XXX: should be precomputed
-        // XXX: f = min(As, 1-Ad)
-        // btw, we're guaranteed that Ad's size is <= 8, because
-        // it's extracted from the framebuffer
-        break;
-    }
-
-    switch(f) {
-    case GGL_ONE_MINUS_DST_COLOR:
-    case GGL_ONE_MINUS_SRC_COLOR:
-    case GGL_ONE_MINUS_DST_ALPHA:
-    case GGL_ONE_MINUS_SRC_ALPHA:
-        RSB(AL, 0, factor.reg, factor.reg, imm((1<<factor.s)));
-    }
-    
-    // don't need more than 8-bits for the blend factor
-    // and this will prevent overflows in the multiplies later
-    if (factor.s > 8) {
-        MOV(AL, 0, factor.reg, reg_imm(factor.reg, LSR, factor.s-8));
-        factor.s = 8;
-    }
-}
-
-int GGLAssembler::blending_codes(int fs, int fd)
-{
-    int blending = 0;
-    switch(fs) {
-    case GGL_ONE:
-        blending |= BLEND_SRC;
-        break;
-
-    case GGL_ONE_MINUS_DST_COLOR:
-    case GGL_DST_COLOR:
-        blending |= FACTOR_DST|BLEND_SRC;
-        break;
-    case GGL_ONE_MINUS_DST_ALPHA:
-    case GGL_DST_ALPHA:
-        // no need to extract 'component' from the destination
-        // for the blend factor, because we need ALPHA only.
-        blending |= BLEND_SRC;
-        break;
-
-    case GGL_ONE_MINUS_SRC_COLOR:
-    case GGL_SRC_COLOR:    
-        blending |= FACTOR_SRC|BLEND_SRC;
-        break;
-    case GGL_ONE_MINUS_SRC_ALPHA:
-    case GGL_SRC_ALPHA:
-    case GGL_SRC_ALPHA_SATURATE:
-        blending |= FACTOR_SRC|BLEND_SRC;
-        break;
-    }
-    switch(fd) {
-    case GGL_ONE:
-        blending |= BLEND_DST;
-        break;
-
-    case GGL_ONE_MINUS_DST_COLOR:
-    case GGL_DST_COLOR:
-        blending |= FACTOR_DST|BLEND_DST;
-        break;
-    case GGL_ONE_MINUS_DST_ALPHA:
-    case GGL_DST_ALPHA:
-        blending |= FACTOR_DST|BLEND_DST;
-        break;
-
-    case GGL_ONE_MINUS_SRC_COLOR:
-    case GGL_SRC_COLOR:    
-        blending |= FACTOR_SRC|BLEND_DST;
-        break;
-    case GGL_ONE_MINUS_SRC_ALPHA:
-    case GGL_SRC_ALPHA:
-        // no need to extract 'component' from the source
-        // for the blend factor, because we need ALPHA only.
-        blending |= BLEND_DST;
-        break;
-    }
-    return blending;
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::build_blendFOneMinusF(
-        component_t& temp,
-        const integer_t& factor, 
-        const integer_t& fragment,
-        const integer_t& fb)
-{
-    //  R = S*f + D*(1-f) = (S-D)*f + D
-    Scratch scratches(registerFile());
-    // compute S-D
-    integer_t diff(fragment.flags & CORRUPTIBLE ?
-            fragment.reg : scratches.obtain(), fb.size(), CORRUPTIBLE);
-    const int shift = fragment.size() - fb.size();
-    if (shift>0)        RSB(AL, 0, diff.reg, fb.reg, reg_imm(fragment.reg, LSR, shift));
-    else if (shift<0)   RSB(AL, 0, diff.reg, fb.reg, reg_imm(fragment.reg, LSL,-shift));
-    else                RSB(AL, 0, diff.reg, fb.reg, fragment.reg);
-    mul_factor_add(temp, diff, factor, component_t(fb));
-}
-
-void GGLAssembler::build_blendOneMinusFF(
-        component_t& temp,
-        const integer_t& factor, 
-        const integer_t& fragment,
-        const integer_t& fb)
-{
-    //  R = S*f + D*(1-f) = (S-D)*f + D
-    Scratch scratches(registerFile());
-    // compute D-S
-    integer_t diff(fb.flags & CORRUPTIBLE ?
-            fb.reg : scratches.obtain(), fb.size(), CORRUPTIBLE);
-    const int shift = fragment.size() - fb.size();
-    if (shift>0)        SUB(AL, 0, diff.reg, fb.reg, reg_imm(fragment.reg, LSR, shift));
-    else if (shift<0)   SUB(AL, 0, diff.reg, fb.reg, reg_imm(fragment.reg, LSL,-shift));
-    else                SUB(AL, 0, diff.reg, fb.reg, fragment.reg);
-    mul_factor_add(temp, diff, factor, component_t(fragment));
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::mul_factor(  component_t& d,
-                                const integer_t& v,
-                                const integer_t& f)
-{
-    int vs = v.size();
-    int fs = f.size();
-    int ms = vs+fs;
-
-    // XXX: we could have special cases for 1 bit mul
-
-    // all this code below to use the best multiply instruction
-    // wrt the parameters size. We take advantage of the fact
-    // that the 16-bits multiplies allow a 16-bit shift
-    // The trick is that we just make sure that we have at least 8-bits
-    // per component (which is enough for a 8 bits display).
-
-    int xy;
-    int vshift = 0;
-    int fshift = 0;
-    int smulw = 0;
-
-    if (vs<16) {
-        if (fs<16) {
-            xy = xyBB;
-        } else if (GGL_BETWEEN(fs, 24, 31)) {
-            ms -= 16;
-            xy = xyTB;
-        } else {
-            // eg: 15 * 18  ->  15 * 15
-            fshift = fs - 15;
-            ms -= fshift;
-            xy = xyBB;
-        }
-    } else if (GGL_BETWEEN(vs, 24, 31)) {
-        if (fs<16) {
-            ms -= 16;
-            xy = xyTB;
-        } else if (GGL_BETWEEN(fs, 24, 31)) {
-            ms -= 32;
-            xy = xyTT;
-        } else {
-            // eg: 24 * 18  ->  8 * 18
-            fshift = fs - 15;
-            ms -= 16 + fshift;
-            xy = xyTB;
-        }
-    } else {
-        if (fs<16) {
-            // eg: 18 * 15  ->  15 * 15
-            vshift = vs - 15;
-            ms -= vshift;
-            xy = xyBB;
-        } else if (GGL_BETWEEN(fs, 24, 31)) {
-            // eg: 18 * 24  ->  15 * 8
-            vshift = vs - 15;
-            ms -= 16 + vshift;
-            xy = xyBT;
-        } else {
-            // eg: 18 * 18  ->  (15 * 18)>>16
-            fshift = fs - 15;
-            ms -= 16 + fshift;
-            xy = yB;    //XXX SMULWB
-            smulw = 1;
-        }
-    }
-
-    ALOGE_IF(ms>=32, "mul_factor overflow vs=%d, fs=%d", vs, fs);
-
-    int vreg = v.reg;
-    int freg = f.reg;
-    if (vshift) {
-        MOV(AL, 0, d.reg, reg_imm(vreg, LSR, vshift));
-        vreg = d.reg;
-    }
-    if (fshift) {
-        MOV(AL, 0, d.reg, reg_imm(vreg, LSR, fshift));
-        freg = d.reg;
-    }
-    if (smulw)  SMULW(AL, xy, d.reg, vreg, freg);
-    else        SMUL(AL, xy, d.reg, vreg, freg);
-
-
-    d.h = ms;
-    if (mDithering) {
-        d.l = 0; 
-    } else {
-        d.l = fs; 
-        d.flags |= CLEAR_LO;
-    }
-}
-
-void GGLAssembler::mul_factor_add(  component_t& d,
-                                    const integer_t& v,
-                                    const integer_t& f,
-                                    const component_t& a)
-{
-    // XXX: we could have special cases for 1 bit mul
-    Scratch scratches(registerFile());
-
-    int vs = v.size();
-    int fs = f.size();
-    int as = a.h;
-    int ms = vs+fs;
-
-    ALOGE_IF(ms>=32, "mul_factor_add overflow vs=%d, fs=%d, as=%d", vs, fs, as);
-
-    integer_t add(a.reg, a.h, a.flags);
-
-    // 'a' is a component_t but it is guaranteed to have
-    // its high bits set to 0. However in the dithering case,
-    // we can't get away with truncating the potentially bad bits
-    // so extraction is needed.
-
-   if ((mDithering) && (a.size() < ms)) {
-        // we need to expand a
-        if (!(a.flags & CORRUPTIBLE)) {
-            // ... but it's not corruptible, so we need to pick a
-            // temporary register.
-            // Try to uses the destination register first (it's likely
-            // to be usable, unless it aliases an input).
-            if (d.reg!=a.reg && d.reg!=v.reg && d.reg!=f.reg) {
-                add.reg = d.reg;
-            } else {
-                add.reg = scratches.obtain();
-            }
-        }
-        expand(add, a, ms); // extracts and expands
-        as = ms;
-    }
-
-    if (ms == as) {
-        if (vs<16 && fs<16) SMLABB(AL, d.reg, v.reg, f.reg, add.reg);
-        else                MLA(AL, 0, d.reg, v.reg, f.reg, add.reg);
-    } else {
-        int temp = d.reg;
-        if (temp == add.reg) {
-            // the mul will modify add.reg, we need an intermediary reg
-            if (v.flags & CORRUPTIBLE)      temp = v.reg;
-            else if (f.flags & CORRUPTIBLE) temp = f.reg;
-            else                            temp = scratches.obtain();
-        }
-
-        if (vs<16 && fs<16) SMULBB(AL, temp, v.reg, f.reg);
-        else                MUL(AL, 0, temp, v.reg, f.reg);
-
-        if (ms>as) {
-            ADD(AL, 0, d.reg, temp, reg_imm(add.reg, LSL, ms-as));
-        } else if (ms<as) {
-            // not sure if we should expand the mul instead?
-            ADD(AL, 0, d.reg, temp, reg_imm(add.reg, LSR, as-ms));
-        }
-    }
-
-    d.h = ms;
-    if (mDithering) {
-        d.l = a.l; 
-    } else {
-        d.l = fs>a.l ? fs : a.l;
-        d.flags |= CLEAR_LO;
-    }
-}
-
-void GGLAssembler::component_add(component_t& d,
-        const integer_t& dst, const integer_t& src)
-{
-    // here we're guaranteed that fragment.size() >= fb.size()
-    const int shift = src.size() - dst.size();
-    if (!shift) {
-        ADD(AL, 0, d.reg, src.reg, dst.reg);
-    } else {
-        ADD(AL, 0, d.reg, src.reg, reg_imm(dst.reg, LSL, shift));
-    }
-
-    d.h = src.size();
-    if (mDithering) {
-        d.l = 0;
-    } else {
-        d.l = shift;
-        d.flags |= CLEAR_LO;
-    }
-}
-
-void GGLAssembler::component_sat(const component_t& v)
-{
-    const int one = ((1<<v.size())-1)<<v.l;
-    CMP(AL, v.reg, imm( 1<<v.h ));
-    if (isValidImmediate(one)) {
-        MOV(HS, 0, v.reg, imm( one ));
-    } else if (isValidImmediate(~one)) {
-        MVN(HS, 0, v.reg, imm( ~one ));
-    } else {
-        MOV(HS, 0, v.reg, imm( 1<<v.h ));
-        SUB(HS, 0, v.reg, v.reg, imm( 1<<v.l ));
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
-
diff --git a/libpixelflinger/codeflinger/disassem.c b/libpixelflinger/codeflinger/disassem.c
deleted file mode 100644
index 5cbd63d..0000000
--- a/libpixelflinger/codeflinger/disassem.c
+++ /dev/null
@@ -1,714 +0,0 @@
-/*	$NetBSD: disassem.c,v 1.14 2003/03/27 16:58:36 mycroft Exp $	*/
-
-/*-
- * Copyright (c) 1996 Mark Brinicombe.
- * Copyright (c) 1996 Brini.
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by Brini.
- * 4. The name of the company nor the name of the author may be used to
- *    endorse or promote products derived from this software without specific
- *    prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * RiscBSD kernel project
- *
- * db_disasm.c
- *
- * Kernel disassembler
- *
- * Created      : 10/02/96
- *
- * Structured after the sparc/sparc/db_disasm.c by David S. Miller &
- * Paul Kranenburg
- *
- * This code is not complete. Not all instructions are disassembled.
- */
-
-#include <sys/cdefs.h>
-//__FBSDID("$FreeBSD: /repoman/r/ncvs/src/sys/arm/arm/disassem.c,v 1.2 2005/01/05 21:58:47 imp Exp $");
-#include <sys/param.h>
-#include <stdio.h>
-
-#include "disassem.h"
-#include "armreg.h"
-//#include <ddb/ddb.h>
-
-/*
- * General instruction format
- *
- *	insn[cc][mod]	[operands]
- *
- * Those fields with an uppercase format code indicate that the field
- * follows directly after the instruction before the separator i.e.
- * they modify the instruction rather than just being an operand to
- * the instruction. The only exception is the writeback flag which
- * follows a operand.
- *
- *
- * 2 - print Operand 2 of a data processing instruction
- * d - destination register (bits 12-15)
- * n - n register (bits 16-19)
- * s - s register (bits 8-11)
- * o - indirect register rn (bits 16-19) (used by swap)
- * m - m register (bits 0-3)
- * a - address operand of ldr/str instruction
- * e - address operand of ldrh/strh instruction
- * l - register list for ldm/stm instruction
- * f - 1st fp operand (register) (bits 12-14)
- * g - 2nd fp operand (register) (bits 16-18)
- * h - 3rd fp operand (register/immediate) (bits 0-4)
- * j - xtb rotate literal (bits 10-11)
- * i - bfx lsb literal (bits 7-11)
- * w - bfx width literal (bits 16-20)
- * b - branch address
- * t - thumb branch address (bits 24, 0-23)
- * k - breakpoint comment (bits 0-3, 8-19)
- * X - block transfer type
- * Y - block transfer type (r13 base)
- * c - comment field bits(0-23)
- * p - saved or current status register
- * F - PSR transfer fields
- * D - destination-is-r15 (P) flag on TST, TEQ, CMP, CMN
- * L - co-processor transfer size
- * S - set status flag
- * P - fp precision
- * Q - fp precision (for ldf/stf)
- * R - fp rounding
- * v - co-processor data transfer registers + addressing mode
- * W - writeback flag
- * x - instruction in hex
- * # - co-processor number
- * y - co-processor data processing registers
- * z - co-processor register transfer registers
- */
-
-struct arm32_insn {
-	u_int mask;
-	u_int pattern;
-	char* name;
-	char* format;
-};
-
-static const struct arm32_insn arm32_i[] = {
-    { 0x0fffffff, 0x0ff00000, "imb",	"c" },		/* Before swi */
-    { 0x0fffffff, 0x0ff00001, "imbrange",	"c" },	/* Before swi */
-    { 0x0f000000, 0x0f000000, "swi",	"c" },
-    { 0xfe000000, 0xfa000000, "blx",	"t" },		/* Before b and bl */
-    { 0x0f000000, 0x0a000000, "b",	"b" },
-    { 0x0f000000, 0x0b000000, "bl",	"b" },
-    { 0x0fe000f0, 0x00000090, "mul",	"Snms" },
-    { 0x0fe000f0, 0x00200090, "mla",	"Snmsd" },
-    { 0x0fe000f0, 0x00800090, "umull",	"Sdnms" },
-    { 0x0fe000f0, 0x00c00090, "smull",	"Sdnms" },
-    { 0x0fe000f0, 0x00a00090, "umlal",	"Sdnms" },
-    { 0x0fe000f0, 0x00e00090, "smlal",	"Sdnms" },
-    { 0x0fff03f0, 0x06cf0070, "uxtb16", "dmj" },
-    { 0x0fe00070, 0x07e00050, "ubfx",   "dmiw" },
-    { 0x0d700000, 0x04200000, "strt",	"daW" },
-    { 0x0d700000, 0x04300000, "ldrt",	"daW" },
-    { 0x0d700000, 0x04600000, "strbt",	"daW" },
-    { 0x0d700000, 0x04700000, "ldrbt",	"daW" },
-    { 0x0c500000, 0x04000000, "str",	"daW" },
-    { 0x0c500000, 0x04100000, "ldr",	"daW" },
-    { 0x0c500000, 0x04400000, "strb",	"daW" },
-    { 0x0c500000, 0x04500000, "ldrb",	"daW" },
-    { 0x0e1f0000, 0x080d0000, "stm",	"YnWl" },/* separate out r13 base */
-    { 0x0e1f0000, 0x081d0000, "ldm",	"YnWl" },/* separate out r13 base */    
-    { 0x0e100000, 0x08000000, "stm",	"XnWl" },
-    { 0x0e100000, 0x08100000, "ldm",	"XnWl" },    
-    { 0x0e1000f0, 0x00100090, "ldrb",	"deW" },
-    { 0x0e1000f0, 0x00000090, "strb",	"deW" },
-    { 0x0e1000f0, 0x001000d0, "ldrsb",	"deW" },
-    { 0x0e1000f0, 0x001000b0, "ldrh",	"deW" },
-    { 0x0e1000f0, 0x000000b0, "strh",	"deW" },
-    { 0x0e1000f0, 0x001000f0, "ldrsh",	"deW" },
-    { 0x0f200090, 0x00200090, "und",	"x" },	/* Before data processing */
-    { 0x0e1000d0, 0x000000d0, "und",	"x" },	/* Before data processing */
-    { 0x0ff00ff0, 0x01000090, "swp",	"dmo" },
-    { 0x0ff00ff0, 0x01400090, "swpb",	"dmo" },
-    { 0x0fbf0fff, 0x010f0000, "mrs",	"dp" },	/* Before data processing */
-    { 0x0fb0fff0, 0x0120f000, "msr",	"pFm" },/* Before data processing */
-    { 0x0fb0f000, 0x0320f000, "msr",	"pF2" },/* Before data processing */
-    { 0x0ffffff0, 0x012fff10, "bx",     "m" },
-    { 0x0fff0ff0, 0x016f0f10, "clz",	"dm" },
-    { 0x0ffffff0, 0x012fff30, "blx",	"m" },
-    { 0xfff000f0, 0xe1200070, "bkpt",	"k" },
-    { 0x0de00000, 0x00000000, "and",	"Sdn2" },
-    { 0x0de00000, 0x00200000, "eor",	"Sdn2" },
-    { 0x0de00000, 0x00400000, "sub",	"Sdn2" },
-    { 0x0de00000, 0x00600000, "rsb",	"Sdn2" },
-    { 0x0de00000, 0x00800000, "add",	"Sdn2" },
-    { 0x0de00000, 0x00a00000, "adc",	"Sdn2" },
-    { 0x0de00000, 0x00c00000, "sbc",	"Sdn2" },
-    { 0x0de00000, 0x00e00000, "rsc",	"Sdn2" },
-    { 0x0df00000, 0x01100000, "tst",	"Dn2" },
-    { 0x0df00000, 0x01300000, "teq",	"Dn2" },
-    { 0x0df00000, 0x01500000, "cmp",	"Dn2" },
-    { 0x0df00000, 0x01700000, "cmn",	"Dn2" },
-    { 0x0de00000, 0x01800000, "orr",	"Sdn2" },
-    { 0x0de00000, 0x01a00000, "mov",	"Sd2" },
-    { 0x0de00000, 0x01c00000, "bic",	"Sdn2" },
-    { 0x0de00000, 0x01e00000, "mvn",	"Sd2" },
-    { 0x0ff08f10, 0x0e000100, "adf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e100100, "muf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e200100, "suf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e300100, "rsf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e400100, "dvf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e500100, "rdf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e600100, "pow",	"PRfgh" },
-    { 0x0ff08f10, 0x0e700100, "rpw",	"PRfgh" },
-    { 0x0ff08f10, 0x0e800100, "rmf",	"PRfgh" },
-    { 0x0ff08f10, 0x0e900100, "fml",	"PRfgh" },
-    { 0x0ff08f10, 0x0ea00100, "fdv",	"PRfgh" },
-    { 0x0ff08f10, 0x0eb00100, "frd",	"PRfgh" },
-    { 0x0ff08f10, 0x0ec00100, "pol",	"PRfgh" },
-    { 0x0f008f10, 0x0e000100, "fpbop",	"PRfgh" },
-    { 0x0ff08f10, 0x0e008100, "mvf",	"PRfh" },
-    { 0x0ff08f10, 0x0e108100, "mnf",	"PRfh" },
-    { 0x0ff08f10, 0x0e208100, "abs",	"PRfh" },
-    { 0x0ff08f10, 0x0e308100, "rnd",	"PRfh" },
-    { 0x0ff08f10, 0x0e408100, "sqt",	"PRfh" },
-    { 0x0ff08f10, 0x0e508100, "log",	"PRfh" },
-    { 0x0ff08f10, 0x0e608100, "lgn",	"PRfh" },
-    { 0x0ff08f10, 0x0e708100, "exp",	"PRfh" },
-    { 0x0ff08f10, 0x0e808100, "sin",	"PRfh" },
-    { 0x0ff08f10, 0x0e908100, "cos",	"PRfh" },
-    { 0x0ff08f10, 0x0ea08100, "tan",	"PRfh" },
-    { 0x0ff08f10, 0x0eb08100, "asn",	"PRfh" },
-    { 0x0ff08f10, 0x0ec08100, "acs",	"PRfh" },
-    { 0x0ff08f10, 0x0ed08100, "atn",	"PRfh" },
-    { 0x0f008f10, 0x0e008100, "fpuop",	"PRfh" },
-    { 0x0e100f00, 0x0c000100, "stf",	"QLv" },
-    { 0x0e100f00, 0x0c100100, "ldf",	"QLv" },
-    { 0x0ff00f10, 0x0e000110, "flt",	"PRgd" },
-    { 0x0ff00f10, 0x0e100110, "fix",	"PRdh" },
-    { 0x0ff00f10, 0x0e200110, "wfs",	"d" },
-    { 0x0ff00f10, 0x0e300110, "rfs",	"d" },
-    { 0x0ff00f10, 0x0e400110, "wfc",	"d" },
-    { 0x0ff00f10, 0x0e500110, "rfc",	"d" },
-    { 0x0ff0ff10, 0x0e90f110, "cmf",	"PRgh" },
-    { 0x0ff0ff10, 0x0eb0f110, "cnf",	"PRgh" },
-    { 0x0ff0ff10, 0x0ed0f110, "cmfe",	"PRgh" },
-    { 0x0ff0ff10, 0x0ef0f110, "cnfe",	"PRgh" },
-    { 0xff100010, 0xfe000010, "mcr2",	"#z" },
-    { 0x0f100010, 0x0e000010, "mcr",	"#z" },
-    { 0xff100010, 0xfe100010, "mrc2",	"#z" },
-    { 0x0f100010, 0x0e100010, "mrc",	"#z" },
-    { 0xff000010, 0xfe000000, "cdp2",	"#y" },
-    { 0x0f000010, 0x0e000000, "cdp",	"#y" },
-    { 0xfe100090, 0xfc100000, "ldc2",	"L#v" },
-    { 0x0e100090, 0x0c100000, "ldc",	"L#v" },
-    { 0xfe100090, 0xfc000000, "stc2",	"L#v" },
-    { 0x0e100090, 0x0c000000, "stc",	"L#v" },
-    { 0xf550f000, 0xf550f000, "pld",	"ne" },
-    { 0x0ff00ff0, 0x01000050, "qaad",	"dmn" },
-    { 0x0ff00ff0, 0x01400050, "qdaad",	"dmn" },
-    { 0x0ff00ff0, 0x01600050, "qdsub",	"dmn" },
-    { 0x0ff00ff0, 0x01200050, "dsub",	"dmn" },
-    { 0x0ff000f0, 0x01000080, "smlabb",	"nmsd" },   // d & n inverted!!
-    { 0x0ff000f0, 0x010000a0, "smlatb",	"nmsd" },   // d & n inverted!!
-    { 0x0ff000f0, 0x010000c0, "smlabt",	"nmsd" },   // d & n inverted!!
-    { 0x0ff000f0, 0x010000e0, "smlatt",	"nmsd" },   // d & n inverted!!
-    { 0x0ff000f0, 0x01400080, "smlalbb","ndms" },   // d & n inverted!!
-    { 0x0ff000f0, 0x014000a0, "smlaltb","ndms" },   // d & n inverted!!
-    { 0x0ff000f0, 0x014000c0, "smlalbt","ndms" },   // d & n inverted!!
-    { 0x0ff000f0, 0x014000e0, "smlaltt","ndms" },   // d & n inverted!!
-    { 0x0ff000f0, 0x01200080, "smlawb", "nmsd" },   // d & n inverted!!
-    { 0x0ff0f0f0, 0x012000a0, "smulwb","nms" },   // d & n inverted!!
-    { 0x0ff000f0, 0x012000c0, "smlawt", "nmsd" },   // d & n inverted!!
-    { 0x0ff0f0f0, 0x012000e0, "smulwt","nms" },   // d & n inverted!!
-    { 0x0ff0f0f0, 0x01600080, "smulbb","nms" },   // d & n inverted!!
-    { 0x0ff0f0f0, 0x016000a0, "smultb","nms" },   // d & n inverted!!
-    { 0x0ff0f0f0, 0x016000c0, "smulbt","nms" },   // d & n inverted!!
-    { 0x0ff0f0f0, 0x016000e0, "smultt","nms" },   // d & n inverted!!
-    { 0x00000000, 0x00000000, NULL,	NULL }
-};
-
-static char const arm32_insn_conditions[][4] = {
-	"eq", "ne", "cs", "cc",
-	"mi", "pl", "vs", "vc",
-	"hi", "ls", "ge", "lt",
-	"gt", "le", "",   "nv"
-};
-
-static char const insn_block_transfers[][4] = {
-	"da", "ia", "db", "ib"
-};
-
-static char const insn_stack_block_transfers[][4] = {
-	"ed", "ea", "fd", "fa"
-};
-
-static char const op_shifts[][4] = {
-	"lsl", "lsr", "asr", "ror"
-};
-
-static char const insn_fpa_rounding[][2] = {
-	"", "p", "m", "z"
-};
-
-static char const insn_fpa_precision[][2] = {
-	"s", "d", "e", "p"
-};
-
-static char const insn_fpaconstants[][8] = {
-	"0.0", "1.0", "2.0", "3.0",
-	"4.0", "5.0", "0.5", "10.0"
-};
-
-#define insn_condition(x)	arm32_insn_conditions[((x) >> 28) & 0x0f]
-#define insn_blktrans(x)	insn_block_transfers[((x) >> 23) & 3]
-#define insn_stkblktrans(x)	insn_stack_block_transfers[(3*(((x) >> 20)&1))^(((x) >> 23)&3)]
-#define op2_shift(x)		op_shifts[((x) >> 5) & 3]
-#define insn_fparnd(x)		insn_fpa_rounding[((x) >> 5) & 0x03]
-#define insn_fpaprec(x)		insn_fpa_precision[((((x) >> 18) & 2)|((x) >> 7)) & 1]
-#define insn_fpaprect(x)	insn_fpa_precision[((((x) >> 21) & 2)|((x) >> 15)) & 1]
-#define insn_fpaimm(x)		insn_fpaconstants[(x) & 0x07]
-
-/* Local prototypes */
-static void disasm_register_shift(const disasm_interface_t *di, u_int insn);
-static void disasm_print_reglist(const disasm_interface_t *di, u_int insn);
-static void disasm_insn_ldrstr(const disasm_interface_t *di, u_int insn,
-    u_int loc);
-static void disasm_insn_ldrhstrh(const disasm_interface_t *di, u_int insn,
-    u_int loc);
-static void disasm_insn_ldcstc(const disasm_interface_t *di, u_int insn,
-    u_int loc);
-static u_int disassemble_readword(u_int address);
-static void disassemble_printaddr(u_int address);
-
-u_int
-disasm(const disasm_interface_t *di, u_int loc, int __unused altfmt)
-{
-	const struct arm32_insn *i_ptr = &arm32_i[0];
-	u_int insn = di->di_readword(loc);
-	int matchp = 0;
-	int branch;
-	char* f_ptr;
-	int fmt = 0;
-
-/*	di->di_printf("loc=%08x insn=%08x : ", loc, insn);*/
-
-	while (i_ptr->name) {
-		if ((insn & i_ptr->mask) ==  i_ptr->pattern) {
-			matchp = 1;
-			break;
-		}
-		i_ptr++;
-	}
-
-	if (!matchp) {
-		di->di_printf("und%s\t%08x\n", insn_condition(insn), insn);
-		return(loc + INSN_SIZE);
-	}
-
-	/* If instruction forces condition code, don't print it. */
-	if ((i_ptr->mask & 0xf0000000) == 0xf0000000)
-		di->di_printf("%s", i_ptr->name);
-	else
-		di->di_printf("%s%s", i_ptr->name, insn_condition(insn));
-
-	f_ptr = i_ptr->format;
-
-	/* Insert tab if there are no instruction modifiers */
-
-	if (*(f_ptr) < 'A' || *(f_ptr) > 'Z') {
-		++fmt;
-		di->di_printf("\t");
-	}
-
-	while (*f_ptr) {
-		switch (*f_ptr) {
-		/* 2 - print Operand 2 of a data processing instruction */
-		case '2':
-			if (insn & 0x02000000) {
-				int rotate= ((insn >> 7) & 0x1e);
-
-				di->di_printf("#0x%08x",
-					      (insn & 0xff) << (32 - rotate) |
-					      (insn & 0xff) >> rotate);
-			} else {  
-				disasm_register_shift(di, insn);
-			}
-			break;
-		/* d - destination register (bits 12-15) */
-		case 'd':
-			di->di_printf("r%d", ((insn >> 12) & 0x0f));
-			break;
-		/* D - insert 'p' if Rd is R15 */
-		case 'D':
-			if (((insn >> 12) & 0x0f) == 15)
-				di->di_printf("p");
-			break;
-		/* n - n register (bits 16-19) */
-		case 'n':
-			di->di_printf("r%d", ((insn >> 16) & 0x0f));
-			break;
-		/* s - s register (bits 8-11) */
-		case 's':
-			di->di_printf("r%d", ((insn >> 8) & 0x0f));
-			break;
-		/* o - indirect register rn (bits 16-19) (used by swap) */
-		case 'o':
-			di->di_printf("[r%d]", ((insn >> 16) & 0x0f));
-			break;
-		/* m - m register (bits 0-4) */
-		case 'm':
-			di->di_printf("r%d", ((insn >> 0) & 0x0f));
-			break;
-		/* a - address operand of ldr/str instruction */
-		case 'a':
-			disasm_insn_ldrstr(di, insn, loc);
-			break;
-		/* e - address operand of ldrh/strh instruction */
-		case 'e':
-			disasm_insn_ldrhstrh(di, insn, loc);
-			break;
-		/* l - register list for ldm/stm instruction */
-		case 'l':
-			disasm_print_reglist(di, insn);
-			break;
-		/* f - 1st fp operand (register) (bits 12-14) */
-		case 'f':
-			di->di_printf("f%d", (insn >> 12) & 7);
-			break;
-		/* g - 2nd fp operand (register) (bits 16-18) */
-		case 'g':
-			di->di_printf("f%d", (insn >> 16) & 7);
-			break;
-		/* h - 3rd fp operand (register/immediate) (bits 0-4) */
-		case 'h':
-			if (insn & (1 << 3))
-				di->di_printf("#%s", insn_fpaimm(insn));
-			else
-				di->di_printf("f%d", insn & 7);
-			break;
-		/* j - xtb rotate literal (bits 10-11) */
-		case 'j':
-			di->di_printf("ror #%d", ((insn >> 10) & 3) << 3);
-			break;
-        /* i - bfx lsb literal (bits 7-11) */
-        case 'i':
-            di->di_printf("#%d", (insn >> 7) & 31);
-            break;
-        /* w - bfx width literal (bits 16-20) */
-        case 'w':
-            di->di_printf("#%d", 1 + ((insn >> 16) & 31));
-            break;
-		/* b - branch address */
-		case 'b':
-			branch = ((insn << 2) & 0x03ffffff);
-			if (branch & 0x02000000)
-				branch |= 0xfc000000;
-			di->di_printaddr(loc + 8 + branch);
-			break;
-		/* t - blx address */
-		case 't':
-			branch = ((insn << 2) & 0x03ffffff) |
-			    (insn >> 23 & 0x00000002);
-			if (branch & 0x02000000)
-				branch |= 0xfc000000;
-			di->di_printaddr(loc + 8 + branch);
-			break;
-		/* X - block transfer type */
-		case 'X':
-			di->di_printf("%s", insn_blktrans(insn));
-			break;
-		/* Y - block transfer type (r13 base) */
-		case 'Y':
-			di->di_printf("%s", insn_stkblktrans(insn));
-			break;
-		/* c - comment field bits(0-23) */
-		case 'c':
-			di->di_printf("0x%08x", (insn & 0x00ffffff));
-			break;
-		/* k - breakpoint comment (bits 0-3, 8-19) */
-		case 'k':
-			di->di_printf("0x%04x",
-			    (insn & 0x000fff00) >> 4 | (insn & 0x0000000f));
-			break;
-		/* p - saved or current status register */
-		case 'p':
-			if (insn & 0x00400000)
-				di->di_printf("spsr");
-			else
-				di->di_printf("cpsr");
-			break;
-		/* F - PSR transfer fields */
-		case 'F':
-			di->di_printf("_");
-			if (insn & (1 << 16))
-				di->di_printf("c");
-			if (insn & (1 << 17))
-				di->di_printf("x");
-			if (insn & (1 << 18))
-				di->di_printf("s");
-			if (insn & (1 << 19))
-				di->di_printf("f");
-			break;
-		/* B - byte transfer flag */
-		case 'B':
-			if (insn & 0x00400000)
-				di->di_printf("b");
-			break;
-		/* L - co-processor transfer size */
-		case 'L':
-			if (insn & (1 << 22))
-				di->di_printf("l");
-			break;
-		/* S - set status flag */
-		case 'S':
-			if (insn & 0x00100000)
-				di->di_printf("s");
-			break;
-		/* P - fp precision */
-		case 'P':
-			di->di_printf("%s", insn_fpaprec(insn));
-			break;
-		/* Q - fp precision (for ldf/stf) */
-		case 'Q':
-			break;
-		/* R - fp rounding */
-		case 'R':
-			di->di_printf("%s", insn_fparnd(insn));
-			break;
-		/* W - writeback flag */
-		case 'W':
-			if (insn & (1 << 21))
-				di->di_printf("!");
-			break;
-		/* # - co-processor number */
-		case '#':
-			di->di_printf("p%d", (insn >> 8) & 0x0f);
-			break;
-		/* v - co-processor data transfer registers+addressing mode */
-		case 'v':
-			disasm_insn_ldcstc(di, insn, loc);
-			break;
-		/* x - instruction in hex */
-		case 'x':
-			di->di_printf("0x%08x", insn);
-			break;
-		/* y - co-processor data processing registers */
-		case 'y':
-			di->di_printf("%d, ", (insn >> 20) & 0x0f);
-
-			di->di_printf("c%d, c%d, c%d", (insn >> 12) & 0x0f,
-			    (insn >> 16) & 0x0f, insn & 0x0f);
-
-			di->di_printf(", %d", (insn >> 5) & 0x07);
-			break;
-		/* z - co-processor register transfer registers */
-		case 'z':
-			di->di_printf("%d, ", (insn >> 21) & 0x07);
-			di->di_printf("r%d, c%d, c%d, %d",
-			    (insn >> 12) & 0x0f, (insn >> 16) & 0x0f,
-			    insn & 0x0f, (insn >> 5) & 0x07);
-
-/*			if (((insn >> 5) & 0x07) != 0)
-				di->di_printf(", %d", (insn >> 5) & 0x07);*/
-			break;
-		default:
-			di->di_printf("[%c - unknown]", *f_ptr);
-			break;
-		}
-		if (*(f_ptr+1) >= 'A' && *(f_ptr+1) <= 'Z')
-			++f_ptr;
-		else if (*(++f_ptr)) {
-			++fmt;
-			if (fmt == 1)
-				di->di_printf("\t");
-			else
-				di->di_printf(", ");
-		}
-	};
-
-	di->di_printf("\n");
-
-	return(loc + INSN_SIZE);
-}
-
-
-static void
-disasm_register_shift(const disasm_interface_t *di, u_int insn)
-{
-	di->di_printf("r%d", (insn & 0x0f));
-	if ((insn & 0x00000ff0) == 0)
-		;
-	else if ((insn & 0x00000ff0) == 0x00000060)
-		di->di_printf(", rrx");
-	else {
-		if (insn & 0x10)
-			di->di_printf(", %s r%d", op2_shift(insn),
-			    (insn >> 8) & 0x0f);
-		else
-			di->di_printf(", %s #%d", op2_shift(insn),
-			    (insn >> 7) & 0x1f);
-	}
-}
-
-
-static void
-disasm_print_reglist(const disasm_interface_t *di, u_int insn)
-{
-	int loop;
-	int start;
-	int comma;
-
-	di->di_printf("{");
-	start = -1;
-	comma = 0;
-
-	for (loop = 0; loop < 17; ++loop) {
-		if (start != -1) {
-			if (loop == 16 || !(insn & (1 << loop))) {
-				if (comma)
-					di->di_printf(", ");
-				else
-					comma = 1;
-        			if (start == loop - 1)
-        				di->di_printf("r%d", start);
-        			else
-        				di->di_printf("r%d-r%d", start, loop - 1);
-        			start = -1;
-        		}
-        	} else {
-        		if (insn & (1 << loop))
-        			start = loop;
-        	}
-        }
-	di->di_printf("}");
-
-	if (insn & (1 << 22))
-		di->di_printf("^");
-}
-
-static void
-disasm_insn_ldrstr(const disasm_interface_t *di, u_int insn, u_int loc)
-{
-	int offset;
-
-	offset = insn & 0xfff;
-	if ((insn & 0x032f0000) == 0x010f0000) {
-		/* rA = pc, immediate index */
-		if (insn & 0x00800000)
-			loc += offset;
-		else
-			loc -= offset;
-		di->di_printaddr(loc + 8);
- 	} else {
-		di->di_printf("[r%d", (insn >> 16) & 0x0f);
-		if ((insn & 0x03000fff) != 0x01000000) {
-			di->di_printf("%s, ", (insn & (1 << 24)) ? "" : "]");
-			if (!(insn & 0x00800000))
-				di->di_printf("-");
-			if (insn & (1 << 25))
-				disasm_register_shift(di, insn);
-			else
-				di->di_printf("#0x%03x", offset);
-		}
-		if (insn & (1 << 24))
-			di->di_printf("]");
-	}
-}
-
-static void
-disasm_insn_ldrhstrh(const disasm_interface_t *di, u_int insn, u_int loc)
-{
-	int offset;
-
-	offset = ((insn & 0xf00) >> 4) | (insn & 0xf);
-	if ((insn & 0x004f0000) == 0x004f0000) {
-		/* rA = pc, immediate index */
-		if (insn & 0x00800000)
-			loc += offset;
-		else
-			loc -= offset;
-		di->di_printaddr(loc + 8);
- 	} else {
-		di->di_printf("[r%d", (insn >> 16) & 0x0f);
-		if ((insn & 0x01400f0f) != 0x01400000) {
-			di->di_printf("%s, ", (insn & (1 << 24)) ? "" : "]");
-			if (!(insn & 0x00800000))
-				di->di_printf("-");
-			if (insn & (1 << 22))
-				di->di_printf("#0x%02x", offset);
-			else
-				di->di_printf("r%d", (insn & 0x0f));
-		}
-		if (insn & (1 << 24))
-			di->di_printf("]");
-	}
-}
-
-static void
-disasm_insn_ldcstc(const disasm_interface_t *di, u_int insn, u_int __unused loc)
-{
-	if (((insn >> 8) & 0xf) == 1)
-		di->di_printf("f%d, ", (insn >> 12) & 0x07);
-	else
-		di->di_printf("c%d, ", (insn >> 12) & 0x0f);
-
-	di->di_printf("[r%d", (insn >> 16) & 0x0f);
-
-	di->di_printf("%s, ", (insn & (1 << 24)) ? "" : "]");
-
-	if (!(insn & (1 << 23)))
-		di->di_printf("-");
-
-	di->di_printf("#0x%03x", (insn & 0xff) << 2);
-
-	if (insn & (1 << 24))
-		di->di_printf("]");
-
-	if (insn & (1 << 21))
-		di->di_printf("!");
-}
-
-static u_int
-disassemble_readword(u_int address)
-{
-	return(*((u_int *)address));
-}
-
-static void
-disassemble_printaddr(u_int address)
-{
-	printf("0x%08x", address);
-}
-
-static const disasm_interface_t disassemble_di = {
-	disassemble_readword, disassemble_printaddr, printf
-};
-
-void
-disassemble(u_int address)
-{
-
-	(void)disasm(&disassemble_di, address, 0);
-}
-
-/* End of disassem.c */
diff --git a/libpixelflinger/codeflinger/disassem.h b/libpixelflinger/codeflinger/disassem.h
deleted file mode 100644
index c7c60b6..0000000
--- a/libpixelflinger/codeflinger/disassem.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*	$NetBSD: disassem.h,v 1.4 2001/03/04 04:15:58 matt Exp $	*/
-
-/*-
- * Copyright (c) 1997 Mark Brinicombe.
- * Copyright (c) 1997 Causality Limited.
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by Mark Brinicombe.
- * 4. The name of the company nor the name of the author may be used to
- *    endorse or promote products derived from this software without specific
- *    prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * Define the interface structure required by the disassembler.
- *
- * $FreeBSD: /repoman/r/ncvs/src/sys/arm/include/disassem.h,v 1.2 2005/01/05 21:58:48 imp Exp $
- */
-
-#ifndef ANDROID_MACHINE_DISASSEM_H
-#define ANDROID_MACHINE_DISASSEM_H
-
-#include <sys/types.h>
-
-#if __cplusplus
-extern "C" {
-#endif
-
-typedef struct {
-	u_int	(*di_readword)(u_int);
-	void	(*di_printaddr)(u_int);
-	int	(*di_printf)(const char *, ...);
-} disasm_interface_t;
-
-/* Prototypes for callable functions */
-
-u_int disasm(const disasm_interface_t *, u_int, int);
-void disassemble(u_int);
-
-#if __cplusplus
-}
-#endif
-
-#endif /* !ANDROID_MACHINE_DISASSEM_H */
diff --git a/libpixelflinger/codeflinger/load_store.cpp b/libpixelflinger/codeflinger/load_store.cpp
deleted file mode 100644
index 4db0a49..0000000
--- a/libpixelflinger/codeflinger/load_store.cpp
+++ /dev/null
@@ -1,384 +0,0 @@
-/* libs/pixelflinger/codeflinger/load_store.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "pixelflinger-code"
-
-#include <assert.h>
-#include <stdio.h>
-
-#include <log/log.h>
-
-#include "GGLAssembler.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-void GGLAssembler::store(const pointer_t& addr, const pixel_t& s, uint32_t flags)
-{
-    const int bits = addr.size;
-    const int inc = (flags & WRITE_BACK)?1:0;
-    switch (bits) {
-    case 32:
-        if (inc)    STR(AL, s.reg, addr.reg, immed12_post(4));
-        else        STR(AL, s.reg, addr.reg);
-        break;
-    case 24:
-        // 24 bits formats are a little special and used only for RGB
-        // 0x00BBGGRR is unpacked as R,G,B
-        STRB(AL, s.reg, addr.reg, immed12_pre(0));
-        MOV(AL, 0, s.reg, reg_imm(s.reg, ROR, 8));
-        STRB(AL, s.reg, addr.reg, immed12_pre(1));
-        MOV(AL, 0, s.reg, reg_imm(s.reg, ROR, 8));
-        STRB(AL, s.reg, addr.reg, immed12_pre(2));
-        if (!(s.flags & CORRUPTIBLE)) {
-            MOV(AL, 0, s.reg, reg_imm(s.reg, ROR, 16));
-        }
-        if (inc)
-            ADD(AL, 0, addr.reg, addr.reg, imm(3));
-        break;
-    case 16:
-        if (inc)    STRH(AL, s.reg, addr.reg, immed8_post(2));
-        else        STRH(AL, s.reg, addr.reg);
-        break;
-    case  8:
-        if (inc)    STRB(AL, s.reg, addr.reg, immed12_post(1));
-        else        STRB(AL, s.reg, addr.reg);
-        break;
-    }
-}
-
-void GGLAssembler::load(const pointer_t& addr, const pixel_t& s, uint32_t flags)
-{
-    Scratch scratches(registerFile());
-    int s0;
-
-    const int bits = addr.size;
-    const int inc = (flags & WRITE_BACK)?1:0;
-    switch (bits) {
-    case 32:
-        if (inc)    LDR(AL, s.reg, addr.reg, immed12_post(4));
-        else        LDR(AL, s.reg, addr.reg);
-        break;
-    case 24:
-        // 24 bits formats are a little special and used only for RGB
-        // R,G,B is packed as 0x00BBGGRR
-        s0 = scratches.obtain();
-        if (s.reg != addr.reg) {
-            LDRB(AL, s.reg, addr.reg, immed12_pre(0));      // R
-            LDRB(AL, s0, addr.reg, immed12_pre(1));         // G
-            ORR(AL, 0, s.reg, s.reg, reg_imm(s0, LSL, 8));
-            LDRB(AL, s0, addr.reg, immed12_pre(2));         // B
-            ORR(AL, 0, s.reg, s.reg, reg_imm(s0, LSL, 16));
-        } else {
-            int s1 = scratches.obtain();
-            LDRB(AL, s1, addr.reg, immed12_pre(0));         // R
-            LDRB(AL, s0, addr.reg, immed12_pre(1));         // G
-            ORR(AL, 0, s1, s1, reg_imm(s0, LSL, 8));
-            LDRB(AL, s0, addr.reg, immed12_pre(2));         // B
-            ORR(AL, 0, s.reg, s1, reg_imm(s0, LSL, 16));
-        }
-        if (inc)
-            ADD(AL, 0, addr.reg, addr.reg, imm(3));
-        break;
-    case 16:
-        if (inc)    LDRH(AL, s.reg, addr.reg, immed8_post(2));
-        else        LDRH(AL, s.reg, addr.reg);
-        break;
-    case  8:
-        if (inc)    LDRB(AL, s.reg, addr.reg, immed12_post(1));
-        else        LDRB(AL, s.reg, addr.reg);
-        break;
-    }
-}
-
-void GGLAssembler::extract(integer_t& d, int s, int h, int l, int bits)
-{
-    const int maskLen = h-l;
-
-#ifdef __mips__
-    assert(maskLen<=11);
-#else
-    assert(maskLen<=8);
-#endif
-    assert(h);
-
-    if (h != bits) {
-        const int mask = ((1<<maskLen)-1) << l;
-        if (isValidImmediate(mask)) {
-            AND(AL, 0, d.reg, s, imm(mask));    // component = packed & mask;
-        } else if (isValidImmediate(~mask)) {
-            BIC(AL, 0, d.reg, s, imm(~mask));   // component = packed & mask;
-        } else {
-            MOV(AL, 0, d.reg, reg_imm(s, LSL, 32-h));
-            l += 32-h;
-            h = 32;
-        }
-        s = d.reg;
-    }
-
-    if (l) {
-        MOV(AL, 0, d.reg, reg_imm(s, LSR, l));  // component = packed >> l;
-        s = d.reg;
-    }
-
-    if (s != d.reg) {
-        MOV(AL, 0, d.reg, s);
-    }
-
-    d.s = maskLen;
-}
-
-void GGLAssembler::extract(integer_t& d, const pixel_t& s, int component)
-{
-    extract(d,  s.reg,
-                s.format.c[component].h,
-                s.format.c[component].l,
-                s.size());
-}
-
-void GGLAssembler::extract(component_t& d, const pixel_t& s, int component)
-{
-    integer_t r(d.reg, 32, d.flags);
-    extract(r,  s.reg,
-                s.format.c[component].h,
-                s.format.c[component].l,
-                s.size());
-    d = component_t(r);
-}
-
-
-void GGLAssembler::expand(integer_t& d, const component_t& s, int dbits)
-{
-    if (s.l || (s.flags & CLEAR_HI)) {
-        extract(d, s.reg, s.h, s.l, 32);
-        expand(d, d, dbits);
-    } else {
-        expand(d, integer_t(s.reg, s.size(), s.flags), dbits);
-    }
-}
-
-void GGLAssembler::expand(component_t& d, const component_t& s, int dbits)
-{
-    integer_t r(d.reg, 32, d.flags);
-    expand(r, s, dbits);
-    d = component_t(r);
-}
-
-void GGLAssembler::expand(integer_t& dst, const integer_t& src, int dbits)
-{
-    assert(src.size());
-
-    int sbits = src.size();
-    int s = src.reg;
-    int d = dst.reg;
-
-    // be sure to set 'dst' after we read 'src' as they may be identical
-    dst.s = dbits;
-    dst.flags = 0;
-
-    if (dbits<=sbits) {
-        if (s != d) {
-            MOV(AL, 0, d, s);
-        }
-        return;
-    }
-
-    if (sbits == 1) {
-        RSB(AL, 0, d, s, reg_imm(s, LSL, dbits));
-            // d = (s<<dbits) - s;
-        return;
-    }
-
-    if (dbits % sbits) {
-        MOV(AL, 0, d, reg_imm(s, LSL, dbits-sbits));
-            // d = s << (dbits-sbits);
-        dbits -= sbits;
-        do {
-            ORR(AL, 0, d, d, reg_imm(d, LSR, sbits));
-                // d |= d >> sbits;
-            dbits -= sbits;
-            sbits *= 2;
-        } while(dbits>0);
-        return;
-    }
-
-    dbits -= sbits;
-    do {
-        ORR(AL, 0, d, s, reg_imm(s, LSL, sbits));
-            // d |= d<<sbits;
-        s = d;
-        dbits -= sbits;
-        if (sbits*2 < dbits) {
-            sbits *= 2;
-        }
-    } while(dbits>0);
-}
-
-void GGLAssembler::downshift(
-        pixel_t& d, int component, component_t s, const reg_t& dither)
-{
-    Scratch scratches(registerFile());
-
-    int sh = s.h;
-    int sl = s.l;
-    int maskHiBits = (sh!=32) ? ((s.flags & CLEAR_HI)?1:0) : 0;
-    int maskLoBits = (sl!=0)  ? ((s.flags & CLEAR_LO)?1:0) : 0;
-    int sbits = sh - sl;
-
-    int dh = d.format.c[component].h;
-    int dl = d.format.c[component].l;
-    int dbits = dh - dl;
-    int dithering = 0;
-
-    ALOGE_IF(sbits<dbits, "sbits (%d) < dbits (%d) in downshift", sbits, dbits);
-
-    if (sbits>dbits) {
-        // see if we need to dither
-        dithering = mDithering;
-    }
-
-    int ireg = d.reg;
-    if (!(d.flags & FIRST)) {
-        if (s.flags & CORRUPTIBLE)  {
-            ireg = s.reg;
-        } else {
-            ireg = scratches.obtain();
-        }
-    }
-    d.flags &= ~FIRST;
-
-    if (maskHiBits) {
-        // we need to mask the high bits (and possibly the lowbits too)
-        // and we might be able to use immediate mask.
-        if (!dithering) {
-            // we don't do this if we only have maskLoBits because we can
-            // do it more efficiently below (in the case where dl=0)
-            const int offset = sh - dbits;
-            if (dbits<=8 && offset >= 0) {
-                const uint32_t mask = ((1<<dbits)-1) << offset;
-                if (isValidImmediate(mask) || isValidImmediate(~mask)) {
-                    build_and_immediate(ireg, s.reg, mask, 32);
-                    sl = offset;
-                    s.reg = ireg;
-                    sbits = dbits;
-                    maskLoBits = maskHiBits = 0;
-                }
-            }
-        } else {
-            // in the dithering case though, we need to preserve the lower bits
-            const uint32_t mask = ((1<<sbits)-1) << sl;
-            if (isValidImmediate(mask) || isValidImmediate(~mask)) {
-                build_and_immediate(ireg, s.reg, mask, 32);
-                s.reg = ireg;
-                maskLoBits = maskHiBits = 0;
-            }
-        }
-    }
-
-    // XXX: we could special case (maskHiBits & !maskLoBits)
-    // like we do for maskLoBits below, but it happens very rarely
-    // that we have maskHiBits only and the conditions necessary to lead
-    // to better code (like doing d |= s << 24)
-
-    if (maskHiBits) {
-        MOV(AL, 0, ireg, reg_imm(s.reg, LSL, 32-sh));
-        sl += 32-sh;
-        sh = 32;
-        s.reg = ireg;
-        maskHiBits = 0;
-    }
-
-    //	Downsampling should be performed as follows:
-    //  V * ((1<<dbits)-1) / ((1<<sbits)-1)
-    //	V * [(1<<dbits)/((1<<sbits)-1)	-	1/((1<<sbits)-1)]
-    //	V * [1/((1<<sbits)-1)>>dbits	-	1/((1<<sbits)-1)]
-    //	V/((1<<(sbits-dbits))-(1>>dbits))	-	(V>>sbits)/((1<<sbits)-1)>>sbits
-    //	V/((1<<(sbits-dbits))-(1>>dbits))	-	(V>>sbits)/(1-(1>>sbits))
-    //
-    //	By approximating (1>>dbits) and (1>>sbits) to 0:
-    //
-    //		V>>(sbits-dbits)	-	V>>sbits
-    //
-	//  A good approximation is V>>(sbits-dbits),
-    //  but better one (needed for dithering) is:
-    //
-    //		(V>>(sbits-dbits)<<sbits	-	V)>>sbits
-    //		(V<<dbits	-	V)>>sbits
-    //		(V	-	V>>dbits)>>(sbits-dbits)
-
-    // Dithering is done here
-    if (dithering) {
-        comment("dithering");
-        if (sl) {
-            MOV(AL, 0, ireg, reg_imm(s.reg, LSR, sl));
-            sh -= sl;
-            sl = 0;
-            s.reg = ireg;
-        }
-        // scaling (V-V>>dbits)
-        SUB(AL, 0, ireg, s.reg, reg_imm(s.reg, LSR, dbits));
-        const int shift = (GGL_DITHER_BITS - (sbits-dbits));
-        if (shift>0)        ADD(AL, 0, ireg, ireg, reg_imm(dither.reg, LSR, shift));
-        else if (shift<0)   ADD(AL, 0, ireg, ireg, reg_imm(dither.reg, LSL,-shift));
-        else                ADD(AL, 0, ireg, ireg, dither.reg);
-        s.reg = ireg;
-    }
-
-    if ((maskLoBits|dithering) && (sh > dbits)) {
-        int shift = sh-dbits;
-        if (dl) {
-            MOV(AL, 0, ireg, reg_imm(s.reg, LSR, shift));
-            if (ireg == d.reg) {
-                MOV(AL, 0, d.reg, reg_imm(ireg, LSL, dl));
-            } else {
-                ORR(AL, 0, d.reg, d.reg, reg_imm(ireg, LSL, dl));
-            }
-        } else {
-            if (ireg == d.reg) {
-                MOV(AL, 0, d.reg, reg_imm(s.reg, LSR, shift));
-            } else {
-                ORR(AL, 0, d.reg, d.reg, reg_imm(s.reg, LSR, shift));
-            }
-        }
-    } else {
-        int shift = sh-dh;
-        if (shift>0) {
-            if (ireg == d.reg) {
-                MOV(AL, 0, d.reg, reg_imm(s.reg, LSR, shift));
-            } else {
-                ORR(AL, 0, d.reg, d.reg, reg_imm(s.reg, LSR, shift));
-            }
-        } else if (shift<0) {
-            if (ireg == d.reg) {
-                MOV(AL, 0, d.reg, reg_imm(s.reg, LSL, -shift));
-            } else {
-                ORR(AL, 0, d.reg, d.reg, reg_imm(s.reg, LSL, -shift));
-            }
-        } else {
-            if (ireg == d.reg) {
-                if (s.reg != d.reg) {
-                    MOV(AL, 0, d.reg, s.reg);
-                }
-            } else {
-                ORR(AL, 0, d.reg, d.reg, s.reg);
-            }
-        }
-    }
-}
-
-}; // namespace android
diff --git a/libpixelflinger/codeflinger/mips64_disassem.c b/libpixelflinger/codeflinger/mips64_disassem.c
deleted file mode 100644
index 8528299..0000000
--- a/libpixelflinger/codeflinger/mips64_disassem.c
+++ /dev/null
@@ -1,584 +0,0 @@
-/*  $NetBSD: db_disasm.c,v 1.19 2007/02/28 04:21:53 thorpej Exp $   */
-
-/*-
- * Copyright (c) 1991, 1993
- *  The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ralph Campbell.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *  from: @(#)kadb.c    8.1 (Berkeley) 6/10/93
- */
-
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <sys/cdefs.h>
-#include <sys/types.h>
-
-#include <android/log.h>
-
-#include "mips_opcode.h"
-
-#define __unused __attribute__((__unused__))
-
-static char *sprintf_buffer;
-static int sprintf_buf_len;
-
-typedef uint64_t db_addr_t;
-static void db_printf(const char* fmt, ...);
-
-static const char * const op_name[64] = {
-/* 0 */ "spec", "bcond", "j", "jal", "beq", "bne", "blez", "bgtz",
-/* 8 */ "pop10", "addiu", "slti", "sltiu", "andi", "ori", "xori", "aui",
-/*16 */ "cop0", "cop1", "cop2", "?", "?", "?", "pop26", "pop27",
-/*24 */ "pop30", "daddiu", "?", "?", "?", "daui", "msa", "op37",
-/*32 */ "lb", "lh", "?",  "lw", "lbu", "lhu", "?", "lwu",
-/*40 */ "sb", "sh", "?", "sw", "?", "?", "?", "?",
-/*48 */ "?", "lwc1", "bc", "?", "?",  "ldc1", "pop66", "ld",
-/*56 */ "?", "swc1", "balc", "pcrel", "?", "sdc1", "pop76", "sd"
-};
-
-static const char * const spec_name[64] = {
-/* 0 */ "sll", "?", "srl", "sra", "sllv", "?", "srlv", "srav",
-/* 8 */ "?", "jalr", "?", "?", "syscall", "break", "sdbpp", "sync",
-/*16 */ "clz", "clo", "dclz", "dclo", "dsllv", "dlsa", "dsrlv", "dsrav",
-/*24 */ "sop30", "sop31", "sop32", "sop33", "sop34", "sop35", "sop36", "sop37",
-/*32 */ "add", "addu", "sub", "subu", "and", "or", "xor", "nor",
-/*40 */ "?", "?", "slt", "sltu", "dadd", "daddu", "dsub", "dsubu",
-/*48 */ "tge", "tgeu", "tlt", "tltu", "teq", "seleqz", "tne", "selnez",
-/*56 */ "dsll", "?", "dsrl", "dsra", "dsll32", "?", "dsrl32", "dsra32"
-};
-
-static const char * const bcond_name[32] = {
-/* 0 */ "bltz", "bgez", "?", "?", "?", "?", "dahi", "?",
-/* 8 */ "?", "?", "?", "?", "?", "?", "?", "?",
-/*16 */ "nal", "bal", "?", "?", "?", "?", "?", "sigrie",
-/*24 */ "?", "?", "?", "?", "?", "?", "dati", "synci",
-};
-
-static const char * const cop1_name[64] = {
-/* 0 */ "fadd",  "fsub", "fmpy", "fdiv", "fsqrt","fabs", "fmov", "fneg",
-/* 8 */ "fop08","fop09","fop0a","fop0b","fop0c","fop0d","fop0e","fop0f",
-/*16 */ "fop10","fop11","fop12","fop13","fop14","fop15","fop16","fop17",
-/*24 */ "fop18","fop19","fop1a","fop1b","fop1c","fop1d","fop1e","fop1f",
-/*32 */ "fcvts","fcvtd","fcvte","fop23","fcvtw","fop25","fop26","fop27",
-/*40 */ "fop28","fop29","fop2a","fop2b","fop2c","fop2d","fop2e","fop2f",
-/*48 */ "fcmp.f","fcmp.un","fcmp.eq","fcmp.ueq","fcmp.olt","fcmp.ult",
-    "fcmp.ole","fcmp.ule",
-/*56 */ "fcmp.sf","fcmp.ngle","fcmp.seq","fcmp.ngl","fcmp.lt","fcmp.nge",
-    "fcmp.le","fcmp.ngt"
-};
-
-static const char * const fmt_name[16] = {
-    "s",    "d",    "e",    "fmt3",
-    "w",    "fmt5", "fmt6", "fmt7",
-    "fmt8", "fmt9", "fmta", "fmtb",
-    "fmtc", "fmtd", "fmte", "fmtf"
-};
-
-static char * const mips_reg_name[32] = {
-    "zero", "at",   "v0",   "v1",   "a0",   "a1",   "a2",   "a3",
-    "a4",   "a5",   "a6",   "a7",   "t0",   "t1",   "t2",   "t3",
-    "s0",   "s1",   "s2",   "s3",   "s4",   "s5",   "s6",   "s7",
-    "t8",   "t9",   "k0",   "k1",   "gp",   "sp",   "s8",   "ra"
-};
-
-static char * alt_arm_reg_name[32] = {  // hacked names for comparison with ARM code
-    "zero", "at",   "r0",   "r1",   "r2",   "r3",   "r4",   "r5",
-    "r6",   "r7",   "r8",   "r9",   "r10",  "r11",  "r12",  "r13",
-    "r14",  "r15",  "at2",  "cmp",  "s4",   "s5",   "s6",   "s7",
-    "t8",   "t9",   "k0",   "k1",   "gp",   "sp",   "s8",   "ra"
-};
-
-static char * const * reg_name =  &mips_reg_name[0];
-
-static const char * const c0_opname[64] = {
-    "c0op00","tlbr",  "tlbwi", "c0op03","c0op04","c0op05","tlbwr", "c0op07",
-    "tlbp",  "c0op11","c0op12","c0op13","c0op14","c0op15","c0op16","c0op17",
-    "rfe",   "c0op21","c0op22","c0op23","c0op24","c0op25","c0op26","c0op27",
-    "eret",  "c0op31","c0op32","c0op33","c0op34","c0op35","c0op36","c0op37",
-    "c0op40","c0op41","c0op42","c0op43","c0op44","c0op45","c0op46","c0op47",
-    "c0op50","c0op51","c0op52","c0op53","c0op54","c0op55","c0op56","c0op57",
-    "c0op60","c0op61","c0op62","c0op63","c0op64","c0op65","c0op66","c0op67",
-    "c0op70","c0op71","c0op72","c0op73","c0op74","c0op75","c0op77","c0op77",
-};
-
-static const char * const c0_reg[32] = {
-    "index",    "random",   "tlblo0",  "tlblo1",
-    "context",  "pagemask", "wired",   "cp0r7",
-    "badvaddr", "count",    "tlbhi",   "compare",
-    "status",   "cause",    "epc",     "prid",
-    "config",   "lladdr",   "watchlo", "watchhi",
-    "xcontext", "cp0r21",   "cp0r22",  "debug",
-    "depc",     "perfcnt",  "ecc",     "cacheerr",
-    "taglo",    "taghi",    "errepc",  "desave"
-};
-
-static void print_addr(db_addr_t);
-db_addr_t mips_disassem(db_addr_t loc, char *di_buffer, int alt_dis_format);
-
-
-/*
- * Disassemble instruction 'insn' nominally at 'loc'.
- * 'loc' may in fact contain a breakpoint instruction.
- */
-static db_addr_t
-db_disasm_insn(int insn, db_addr_t loc, bool altfmt __unused)
-{
-    bool bdslot = false;
-    InstFmt i;
-
-    i.word = insn;
-
-    switch (i.JType.op) {
-    case OP_SPECIAL:
-        if (i.word == 0) {
-            db_printf("nop");
-            break;
-        }
-        if (i.word == 0x0080) {
-            db_printf("NIY");
-            break;
-        }
-        if (i.word == 0x00c0) {
-            db_printf("NOT IMPL");
-            break;
-        }
-        /* Special cases --------------------------------------------------
-         * "addu" is a "move" only in 32-bit mode.  What's the correct
-         * answer - never decode addu/daddu as "move"?
-         */
-        if ( (i.RType.func == OP_ADDU && i.RType.rt == 0)  ||
-             (i.RType.func == OP_OR   && i.RType.rt == 0) ) {
-            db_printf("move\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rs]);
-            break;
-        }
-
-        if (i.RType.func == OP_SRL && (i.RType.rs & 1) == 1) {
-            db_printf("rotr\t%s,%s,%d", reg_name[i.RType.rd],
-                reg_name[i.RType.rt], i.RType.shamt);
-            break;
-        }
-        if (i.RType.func == OP_SRLV && (i.RType.shamt & 1) == 1) {
-            db_printf("rotrv\t%s,%s,%s", reg_name[i.RType.rd],
-                reg_name[i.RType.rt], reg_name[i.RType.rs]);
-            break;
-        }
-
-        if (i.RType.func == OP_SOP30) {
-            if (i.RType.shamt == OP_MUL) {
-                db_printf("mul");
-            } else if (i.RType.shamt == OP_MUH) {
-                db_printf("muh");
-            }
-            db_printf("\t%s,%s,%s", reg_name[i.RType.rd],
-                reg_name[i.RType.rs], reg_name[i.RType.rt]);
-            break;
-        }
-        if (i.RType.func == OP_SOP31) {
-            if (i.RType.shamt == OP_MUL) {
-                db_printf("mulu");
-            } else if (i.RType.shamt == OP_MUH) {
-                db_printf("muhu");
-            }
-            db_printf("\t%s,%s,%s", reg_name[i.RType.rd],
-                reg_name[i.RType.rs], reg_name[i.RType.rt]);
-            break;
-        }
-
-        if (i.RType.func == OP_JALR && i.RType.rd == 0) {
-            db_printf("jr\t%s", reg_name[i.RType.rs]);
-            bdslot = true;
-            break;
-        }
-
-        db_printf("%s", spec_name[i.RType.func]);
-        switch (i.RType.func) {
-        case OP_SLL:
-        case OP_SRL:
-        case OP_SRA:
-        case OP_DSLL:
-
-        case OP_DSRL:
-        case OP_DSRA:
-        case OP_DSLL32:
-        case OP_DSRL32:
-        case OP_DSRA32:
-            db_printf("\t%s,%s,%d",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt],
-                i.RType.shamt);
-            break;
-
-        case OP_SLLV:
-        case OP_SRLV:
-        case OP_SRAV:
-        case OP_DSLLV:
-        case OP_DSRLV:
-        case OP_DSRAV:
-            db_printf("\t%s,%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt],
-                reg_name[i.RType.rs]);
-            break;
-
-        case OP_CLZ:
-        case OP_CLO:
-        case OP_DCLZ:
-        case OP_DCLO:
-            db_printf("\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rs]);
-            break;
-
-        case OP_JALR:
-            db_printf("\t");
-            if (i.RType.rd != 31) {
-                db_printf("%s,", reg_name[i.RType.rd]);
-            }
-            db_printf("%s", reg_name[i.RType.rs]);
-            bdslot = true;
-            break;
-
-        case OP_SYSCALL:
-        case OP_SYNC:
-            break;
-
-        case OP_BREAK:
-            db_printf("\t%d", (i.RType.rs << 5) | i.RType.rt);
-            break;
-
-        default:
-            db_printf("\t%s,%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rs],
-                reg_name[i.RType.rt]);
-        }
-        break;
-
-    case OP_SPECIAL3:
-        if (i.RType.func == OP_EXT)
-            db_printf("ext\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd+1);
-        else if (i.RType.func == OP_DEXT)
-            db_printf("dext\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd+1);
-        else if (i.RType.func == OP_DEXTM)
-            db_printf("dextm\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd+33);
-        else if (i.RType.func == OP_DEXTU)
-            db_printf("dextu\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt+32,
-                    i.RType.rd+1);
-        else if (i.RType.func == OP_INS)
-            db_printf("ins\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd-i.RType.shamt+1);
-        else if (i.RType.func == OP_DINS)
-            db_printf("dins\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd-i.RType.shamt+1);
-        else if (i.RType.func == OP_DINSM)
-            db_printf("dinsm\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd-i.RType.shamt+33);
-        else if (i.RType.func == OP_DINSU)
-            db_printf("dinsu\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt+32,
-                    i.RType.rd-i.RType.shamt+1);
-        else if (i.RType.func == OP_BSHFL && i.RType.shamt == OP_WSBH)
-            db_printf("wsbh\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else if (i.RType.func == OP_BSHFL && i.RType.shamt == OP_SEB)
-            db_printf("seb\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else if (i.RType.func == OP_BSHFL && i.RType.shamt == OP_SEH)
-            db_printf("seh\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else if (i.RType.func == OP_RDHWR)
-            db_printf("rdhwr\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else
-            db_printf("Unknown");
-        break;
-
-    case OP_BCOND:
-        db_printf("%s\t%s,", bcond_name[i.IType.rt],
-            reg_name[i.IType.rs]);
-        goto pr_displ;
-
-    case OP_BLEZ:
-    case OP_BGTZ:
-        db_printf("%s\t%s,", op_name[i.IType.op],
-            reg_name[i.IType.rs]);
-        goto pr_displ;
-
-    case OP_BEQ:
-        if (i.IType.rs == 0 && i.IType.rt == 0) {
-            db_printf("b\t");
-            goto pr_displ;
-        }
-        /* FALLTHROUGH */
-    case OP_BNE:
-        db_printf("%s\t%s,%s,", op_name[i.IType.op],
-            reg_name[i.IType.rs],
-            reg_name[i.IType.rt]);
-    pr_displ:
-        print_addr(loc + 4 + ((short)i.IType.imm << 2));
-        bdslot = true;
-        break;
-
-    case OP_COP0:
-        switch (i.RType.rs) {
-        case OP_BCx:
-        case OP_BCy:
-
-            db_printf("bc0%c\t",
-                "ft"[i.RType.rt & COPz_BC_TF_MASK]);
-            goto pr_displ;
-
-        case OP_MT:
-            db_printf("mtc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        case OP_DMT:
-            db_printf("dmtc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        case OP_MF:
-            db_printf("mfc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        case OP_DMF:
-            db_printf("dmfc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        default:
-            db_printf("%s", c0_opname[i.FRType.func]);
-        }
-        break;
-
-    case OP_COP1:
-        switch (i.RType.rs) {
-        case OP_BCx:
-        case OP_BCy:
-            db_printf("bc1%c\t",
-                "ft"[i.RType.rt & COPz_BC_TF_MASK]);
-            goto pr_displ;
-
-        case OP_MT:
-            db_printf("mtc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        case OP_MF:
-            db_printf("mfc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        case OP_CT:
-            db_printf("ctc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        case OP_CF:
-            db_printf("cfc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        default:
-            db_printf("%s.%s\tf%d,f%d,f%d",
-                cop1_name[i.FRType.func],
-                fmt_name[i.FRType.fmt],
-                i.FRType.fd, i.FRType.fs, i.FRType.ft);
-        }
-        break;
-
-    case OP_J:
-    case OP_JAL:
-        db_printf("%s\t", op_name[i.JType.op]);
-        print_addr((loc & 0xFFFFFFFFF0000000) | (i.JType.target << 2));
-        bdslot = true;
-        break;
-
-    case OP_LWC1:
-    case OP_SWC1:
-        db_printf("%s\tf%d,", op_name[i.IType.op],
-            i.IType.rt);
-        goto loadstore;
-
-    case OP_LB:
-    case OP_LH:
-    case OP_LW:
-    case OP_LD:
-    case OP_LBU:
-    case OP_LHU:
-    case OP_LWU:
-    case OP_SB:
-    case OP_SH:
-    case OP_SW:
-    case OP_SD:
-        db_printf("%s\t%s,", op_name[i.IType.op],
-            reg_name[i.IType.rt]);
-    loadstore:
-        db_printf("%d(%s)", (short)i.IType.imm,
-            reg_name[i.IType.rs]);
-        break;
-
-    case OP_ORI:
-    case OP_XORI:
-        if (i.IType.rs == 0) {
-            db_printf("li\t%s,0x%x",
-                reg_name[i.IType.rt],
-                i.IType.imm);
-            break;
-        }
-        /* FALLTHROUGH */
-    case OP_ANDI:
-        db_printf("%s\t%s,%s,0x%x", op_name[i.IType.op],
-            reg_name[i.IType.rt],
-            reg_name[i.IType.rs],
-            i.IType.imm);
-        break;
-
-    case OP_AUI:
-        if (i.IType.rs == 0) {
-            db_printf("lui\t%s,0x%x", reg_name[i.IType.rt],
-                i.IType.imm);
-        } else {
-            db_printf("%s\t%s,%s,%d", op_name[i.IType.op],
-            reg_name[i.IType.rt], reg_name[i.IType.rs],
-            (short)i.IType.imm);
-        }
-        break;
-
-    case OP_ADDIU:
-    case OP_DADDIU:
-        if (i.IType.rs == 0) {
-            db_printf("li\t%s,%d",
-                reg_name[i.IType.rt],
-                (short)i.IType.imm);
-            break;
-        }
-        /* FALLTHROUGH */
-    default:
-        db_printf("%s\t%s,%s,%d", op_name[i.IType.op],
-            reg_name[i.IType.rt],
-            reg_name[i.IType.rs],
-            (short)i.IType.imm);
-    }
-    // db_printf("\n");
-    // if (bdslot) {
-    //     db_printf("   bd: ");
-    //     mips_disassem(loc+4);
-    //     return (loc + 8);
-    // }
-    return (loc + 4);
-}
-
-static void
-print_addr(db_addr_t loc)
-{
-    db_printf("0x%08lx", loc);
-}
-
-static void db_printf(const char* fmt, ...)
-{
-    int cnt;
-    va_list argp;
-    va_start(argp, fmt);
-    if (sprintf_buffer) {
-        cnt = vsnprintf(sprintf_buffer, sprintf_buf_len, fmt, argp);
-        sprintf_buffer += cnt;
-        sprintf_buf_len -= cnt;
-    } else {
-        vprintf(fmt, argp);
-    }
-    va_end(argp);
-}
-
-/*
- * Disassemble instruction at 'loc'.
- * Return address of start of next instruction.
- * Since this function is used by 'examine' and by 'step'
- * "next instruction" does NOT mean the next instruction to
- * be executed but the 'linear' next instruction.
- */
-db_addr_t
-mips_disassem(db_addr_t loc, char *di_buffer, int alt_dis_format)
-{
-    u_int32_t instr;
-
-    if (alt_dis_format) {   // use ARM register names for disassembly
-        reg_name = &alt_arm_reg_name[0];
-    }
-
-    sprintf_buffer = di_buffer;     // quick 'n' dirty printf() vs sprintf()
-    sprintf_buf_len = 39;           // should be passed in
-
-    instr =  *(u_int32_t *)loc;
-    return (db_disasm_insn(instr, loc, false));
-}
diff --git a/libpixelflinger/codeflinger/mips64_disassem.h b/libpixelflinger/codeflinger/mips64_disassem.h
deleted file mode 100644
index c94f04f..0000000
--- a/libpixelflinger/codeflinger/mips64_disassem.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*  $NetBSD: db_disasm.c,v 1.19 2007/02/28 04:21:53 thorpej Exp $   */
-
-/*-
- * Copyright (c) 1991, 1993
- *  The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ralph Campbell.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *  from: @(#)kadb.c    8.1 (Berkeley) 6/10/93
- */
-
-
-
-#ifndef ANDROID_MIPS_DISASSEM_H
-#define ANDROID_MIPS_DISASSEM_H
-
-#include <sys/types.h>
-
-#if __cplusplus
-extern "C" {
-#endif
-
-/* Prototypes for callable functions */
-
-void mips_disassem(uint32_t *location, char *di_buffer, int alt_fmt);
-
-#if __cplusplus
-}
-#endif
-
-#endif /* !ANDROID_MIPS_DISASSEM_H */
diff --git a/libpixelflinger/codeflinger/mips_disassem.c b/libpixelflinger/codeflinger/mips_disassem.c
deleted file mode 100644
index 1fe6806..0000000
--- a/libpixelflinger/codeflinger/mips_disassem.c
+++ /dev/null
@@ -1,592 +0,0 @@
-/*  $NetBSD: db_disasm.c,v 1.19 2007/02/28 04:21:53 thorpej Exp $   */
-
-/*-
- * Copyright (c) 1991, 1993
- *  The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ralph Campbell.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *  from: @(#)kadb.c    8.1 (Berkeley) 6/10/93
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <stdarg.h>
-#include <stdbool.h>
-#include <sys/cdefs.h>
-
-#include <sys/types.h>
-#include "mips_opcode.h"
-
-
-// #include <sys/systm.h>
-// #include <sys/param.h>
-
-// #include <machine/reg.h>
-// #include <machine/cpu.h>
-/*#include <machine/param.h>*/
-// #include <machine/db_machdep.h>
-
-// #include <ddb/db_interface.h>
-// #include <ddb/db_output.h>
-// #include <ddb/db_extern.h>
-// #include <ddb/db_sym.h>
-
-#define __unused __attribute__((__unused__))
-
-static char *sprintf_buffer;
-static int sprintf_buf_len;
-
-
-typedef uint32_t db_addr_t;
-static void db_printf(const char* fmt, ...);
-
-static const char * const op_name[64] = {
-/* 0 */ "spec", "bcond","j  ",    "jal",  "beq",  "bne",  "blez", "bgtz",
-/* 8 */ "addi", "addiu","slti", "sltiu","andi", "ori",  "xori", "lui",
-/*16 */ "cop0", "cop1", "cop2", "cop3", "beql", "bnel", "blezl","bgtzl",
-/*24 */ "daddi","daddiu","ldl", "ldr",  "op34", "op35", "op36", "op37",
-/*32 */ "lb ",   "lh ",   "lwl",  "lw ",   "lbu",  "lhu",  "lwr",  "lwu",
-/*40 */ "sb ",   "sh ",   "swl",  "sw ",   "sdl",  "sdr",  "swr",  "cache",
-/*48 */ "ll ",   "lwc1", "lwc2", "lwc3", "lld",  "ldc1", "ldc2", "ld ",
-/*56 */ "sc ",   "swc1", "swc2", "swc3", "scd",  "sdc1", "sdc2", "sd "
-};
-
-static const char * const spec_name[64] = {
-/* 0 */ "sll",  "spec01","srl", "sra",  "sllv", "spec05","srlv","srav",
-/* 8 */ "jr",   "jalr", "movz","movn","syscall","break","spec16","sync",
-/*16 */ "mfhi", "mthi", "mflo", "mtlo", "dsllv","spec25","dsrlv","dsrav",
-/*24 */ "mult", "multu","div",  "divu", "dmult","dmultu","ddiv","ddivu",
-/*32 */ "add",  "addu", "sub",  "subu", "and",  "or ",   "xor",  "nor",
-/*40 */ "spec50","spec51","slt","sltu", "dadd","daddu","dsub","dsubu",
-/*48 */ "tge","tgeu","tlt","tltu","teq","spec65","tne","spec67",
-/*56 */ "dsll","spec71","dsrl","dsra","dsll32","spec75","dsrl32","dsra32"
-};
-
-static const char * const spec2_name[64] = {     /* QED RM4650, R5000, etc. */
-/* 0x00 */ "madd", "maddu", "mul", "spec3", "msub", "msubu", "rsrv6", "rsrv7",
-/* 0x08 */ "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv",
-/* 0x10 */ "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv",
-/* 0x18 */ "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv",
-/* 0x20 */ "clz",  "clo",  "rsrv", "rsrv", "dclz", "dclo", "rsrv", "rsrv",
-/* 0x28 */ "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv",
-/* 0x30 */ "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv", "rsrv",
-/* 0x38 */ "rsrv", "rsrv", "rsrv", "resv", "rsrv", "rsrv", "rsrv", "sdbbp"
-};
-
-static const char * const bcond_name[32] = {
-/* 0 */ "bltz", "bgez", "bltzl", "bgezl", "?", "?", "?", "?",
-/* 8 */ "tgei", "tgeiu", "tlti", "tltiu", "teqi", "?", "tnei", "?",
-/*16 */ "bltzal", "bgezal", "bltzall", "bgezall", "?", "?", "?", "?",
-/*24 */ "?", "?", "?", "?", "?", "?", "?", "?",
-};
-
-static const char * const cop1_name[64] = {
-/* 0 */ "fadd",  "fsub", "fmpy", "fdiv", "fsqrt","fabs", "fmov", "fneg",
-/* 8 */ "fop08","fop09","fop0a","fop0b","fop0c","fop0d","fop0e","fop0f",
-/*16 */ "fop10","fop11","fop12","fop13","fop14","fop15","fop16","fop17",
-/*24 */ "fop18","fop19","fop1a","fop1b","fop1c","fop1d","fop1e","fop1f",
-/*32 */ "fcvts","fcvtd","fcvte","fop23","fcvtw","fop25","fop26","fop27",
-/*40 */ "fop28","fop29","fop2a","fop2b","fop2c","fop2d","fop2e","fop2f",
-/*48 */ "fcmp.f","fcmp.un","fcmp.eq","fcmp.ueq","fcmp.olt","fcmp.ult",
-    "fcmp.ole","fcmp.ule",
-/*56 */ "fcmp.sf","fcmp.ngle","fcmp.seq","fcmp.ngl","fcmp.lt","fcmp.nge",
-    "fcmp.le","fcmp.ngt"
-};
-
-static const char * const fmt_name[16] = {
-    "s",    "d",    "e",    "fmt3",
-    "w",    "fmt5", "fmt6", "fmt7",
-    "fmt8", "fmt9", "fmta", "fmtb",
-    "fmtc", "fmtd", "fmte", "fmtf"
-};
-
-#if defined(__mips_n32) || defined(__mips_n64)
-static char * const reg_name[32] = {
-    "zero", "at",   "v0",   "v1",   "a0",   "a1",   "a2",   "a3",
-    "a4",   "a5",   "a6",   "a7",   "t0",   "t1",   "t2",   "t3",
-    "s0",   "s1",   "s2",   "s3",   "s4",   "s5",   "s6",   "s7",
-    "t8",   "t9",   "k0",   "k1",   "gp",   "sp",   "s8",   "ra"
-};
-#else
-
-static char * alt_arm_reg_name[32] = {  // hacked names for comparison with ARM code
-    "zero", "at",   "r0",   "r1",   "r2",   "r3",   "r4",   "r5",
-    "r6",   "r7",   "r8",   "r9",   "r10",  "r11",  "r12",  "r13",
-    "r14",  "r15",  "at2",  "cmp",  "s4",   "s5",   "s6",   "s7",
-    "t8",   "t9",   "k0",   "k1",   "gp",   "sp",   "s8",   "ra"
-};
-
-static char * mips_reg_name[32] = {
-    "zero", "at",   "v0",   "v1",   "a0",   "a1",   "a2",   "a3",
-    "t0",   "t1",   "t2",   "t3",   "t4",   "t5",   "t6",   "t7",
-    "s0",   "s1",   "s2",   "s3",   "s4",   "s5",   "s6",   "s7",
-    "t8",   "t9",   "k0",   "k1",   "gp",   "sp",   "s8",   "ra"
-};
-
-static char ** reg_name =  &mips_reg_name[0];
-
-#endif /* __mips_n32 || __mips_n64 */
-
-static const char * const c0_opname[64] = {
-    "c0op00","tlbr",  "tlbwi", "c0op03","c0op04","c0op05","tlbwr", "c0op07",
-    "tlbp",  "c0op11","c0op12","c0op13","c0op14","c0op15","c0op16","c0op17",
-    "rfe",   "c0op21","c0op22","c0op23","c0op24","c0op25","c0op26","c0op27",
-    "eret",  "c0op31","c0op32","c0op33","c0op34","c0op35","c0op36","c0op37",
-    "c0op40","c0op41","c0op42","c0op43","c0op44","c0op45","c0op46","c0op47",
-    "c0op50","c0op51","c0op52","c0op53","c0op54","c0op55","c0op56","c0op57",
-    "c0op60","c0op61","c0op62","c0op63","c0op64","c0op65","c0op66","c0op67",
-    "c0op70","c0op71","c0op72","c0op73","c0op74","c0op75","c0op77","c0op77",
-};
-
-static const char * const c0_reg[32] = {
-    "index",    "random",   "tlblo0",  "tlblo1",
-    "context",  "pagemask", "wired",   "cp0r7",
-    "badvaddr", "count",    "tlbhi",   "compare",
-    "status",   "cause",    "epc",     "prid",
-    "config",   "lladdr",   "watchlo", "watchhi",
-    "xcontext", "cp0r21",   "cp0r22",  "debug",
-    "depc",     "perfcnt",  "ecc",     "cacheerr",
-    "taglo",    "taghi",    "errepc",  "desave"
-};
-
-static void print_addr(db_addr_t);
-db_addr_t mips_disassem(db_addr_t loc, char *di_buffer, int alt_dis_format);
-
-
-/*
- * Disassemble instruction 'insn' nominally at 'loc'.
- * 'loc' may in fact contain a breakpoint instruction.
- */
-static db_addr_t
-db_disasm_insn(int insn, db_addr_t loc, bool altfmt __unused)
-{
-    bool bdslot = false;
-    InstFmt i;
-
-    i.word = insn;
-
-    switch (i.JType.op) {
-    case OP_SPECIAL:
-        if (i.word == 0) {
-            db_printf("nop");
-            break;
-        }
-        if (i.word == 0x0080) {
-            db_printf("NIY");
-            break;
-        }
-        if (i.word == 0x00c0) {
-            db_printf("NOT IMPL");
-            break;
-        }
-        /* Special cases --------------------------------------------------
-         * "addu" is a "move" only in 32-bit mode.  What's the correct
-         * answer - never decode addu/daddu as "move"?
-         */
-        if ( (i.RType.func == OP_ADDU && i.RType.rt == 0)  ||
-             (i.RType.func == OP_OR   && i.RType.rt == 0) ) {
-            db_printf("move\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rs]);
-            break;
-        }
-        // mips32r2, rotr & rotrv
-        if (i.RType.func == OP_SRL && (i.RType.rs & 1) == 1) {
-            db_printf("rotr\t%s,%s,%d", reg_name[i.RType.rd],
-                reg_name[i.RType.rt], i.RType.shamt);
-            break;
-        }
-        if (i.RType.func == OP_SRLV && (i.RType.shamt & 1) == 1) {
-            db_printf("rotrv\t%s,%s,%s", reg_name[i.RType.rd],
-                reg_name[i.RType.rt], reg_name[i.RType.rs]);
-            break;
-        }
-
-
-        db_printf("%s", spec_name[i.RType.func]);
-        switch (i.RType.func) {
-        case OP_SLL:
-        case OP_SRL:
-        case OP_SRA:
-        case OP_DSLL:
-
-        case OP_DSRL:
-        case OP_DSRA:
-        case OP_DSLL32:
-        case OP_DSRL32:
-        case OP_DSRA32:
-            db_printf("\t%s,%s,%d",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt],
-                i.RType.shamt);
-            break;
-
-        case OP_SLLV:
-        case OP_SRLV:
-        case OP_SRAV:
-        case OP_DSLLV:
-        case OP_DSRLV:
-        case OP_DSRAV:
-            db_printf("\t%s,%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt],
-                reg_name[i.RType.rs]);
-            break;
-
-        case OP_MFHI:
-        case OP_MFLO:
-            db_printf("\t%s", reg_name[i.RType.rd]);
-            break;
-
-        case OP_JR:
-        case OP_JALR:
-            db_printf("\t%s", reg_name[i.RType.rs]);
-            bdslot = true;
-            break;
-        case OP_MTLO:
-        case OP_MTHI:
-            db_printf("\t%s", reg_name[i.RType.rs]);
-            break;
-
-        case OP_MULT:
-        case OP_MULTU:
-        case OP_DMULT:
-        case OP_DMULTU:
-        case OP_DIV:
-        case OP_DIVU:
-        case OP_DDIV:
-        case OP_DDIVU:
-            db_printf("\t%s,%s",
-                reg_name[i.RType.rs],
-                reg_name[i.RType.rt]);
-            break;
-
-
-        case OP_SYSCALL:
-        case OP_SYNC:
-            break;
-
-        case OP_BREAK:
-            db_printf("\t%d", (i.RType.rs << 5) | i.RType.rt);
-            break;
-
-        default:
-            db_printf("\t%s,%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rs],
-                reg_name[i.RType.rt]);
-        }
-        break;
-
-    case OP_SPECIAL2:
-        if (i.RType.func == OP_MUL)
-            db_printf("%s\t%s,%s,%s",
-                spec2_name[i.RType.func & 0x3f],
-                    reg_name[i.RType.rd],
-                    reg_name[i.RType.rs],
-                    reg_name[i.RType.rt]);
-        else
-            db_printf("%s\t%s,%s",
-                spec2_name[i.RType.func & 0x3f],
-                    reg_name[i.RType.rs],
-                    reg_name[i.RType.rt]);
-
-        break;
-
-    case OP_SPECIAL3:
-        if (i.RType.func == OP_EXT)
-            db_printf("ext\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd+1);
-        else if (i.RType.func == OP_INS)
-            db_printf("ins\t%s,%s,%d,%d",
-                    reg_name[i.RType.rt],
-                    reg_name[i.RType.rs],
-                    i.RType.shamt,
-                    i.RType.rd-i.RType.shamt+1);
-        else if (i.RType.func == OP_BSHFL && i.RType.shamt == OP_WSBH)
-            db_printf("wsbh\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else if (i.RType.func == OP_BSHFL && i.RType.shamt == OP_SEB)
-            db_printf("seb\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else if (i.RType.func == OP_BSHFL && i.RType.shamt == OP_SEH)
-            db_printf("seh\t%s,%s",
-                reg_name[i.RType.rd],
-                reg_name[i.RType.rt]);
-        else
-            db_printf("Unknown");
-        break;
-
-    case OP_BCOND:
-        db_printf("%s\t%s,", bcond_name[i.IType.rt],
-            reg_name[i.IType.rs]);
-        goto pr_displ;
-
-    case OP_BLEZ:
-    case OP_BLEZL:
-    case OP_BGTZ:
-    case OP_BGTZL:
-        db_printf("%s\t%s,", op_name[i.IType.op],
-            reg_name[i.IType.rs]);
-        goto pr_displ;
-
-    case OP_BEQ:
-    case OP_BEQL:
-        if (i.IType.rs == 0 && i.IType.rt == 0) {
-            db_printf("b  \t");
-            goto pr_displ;
-        }
-        /* FALLTHROUGH */
-    case OP_BNE:
-    case OP_BNEL:
-        db_printf("%s\t%s,%s,", op_name[i.IType.op],
-            reg_name[i.IType.rs],
-            reg_name[i.IType.rt]);
-    pr_displ:
-        print_addr(loc + 4 + ((short)i.IType.imm << 2));
-        bdslot = true;
-        break;
-
-    case OP_COP0:
-        switch (i.RType.rs) {
-        case OP_BCx:
-        case OP_BCy:
-
-            db_printf("bc0%c\t",
-                "ft"[i.RType.rt & COPz_BC_TF_MASK]);
-            goto pr_displ;
-
-        case OP_MT:
-            db_printf("mtc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        case OP_DMT:
-            db_printf("dmtc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        case OP_MF:
-            db_printf("mfc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        case OP_DMF:
-            db_printf("dmfc0\t%s,%s",
-                reg_name[i.RType.rt],
-                c0_reg[i.RType.rd]);
-            break;
-
-        default:
-            db_printf("%s", c0_opname[i.FRType.func]);
-        }
-        break;
-
-    case OP_COP1:
-        switch (i.RType.rs) {
-        case OP_BCx:
-        case OP_BCy:
-            db_printf("bc1%c\t",
-                "ft"[i.RType.rt & COPz_BC_TF_MASK]);
-            goto pr_displ;
-
-        case OP_MT:
-            db_printf("mtc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        case OP_MF:
-            db_printf("mfc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        case OP_CT:
-            db_printf("ctc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        case OP_CF:
-            db_printf("cfc1\t%s,f%d",
-                reg_name[i.RType.rt],
-                i.RType.rd);
-            break;
-
-        default:
-            db_printf("%s.%s\tf%d,f%d,f%d",
-                cop1_name[i.FRType.func],
-                fmt_name[i.FRType.fmt],
-                i.FRType.fd, i.FRType.fs, i.FRType.ft);
-        }
-        break;
-
-    case OP_J:
-    case OP_JAL:
-        db_printf("%s\t", op_name[i.JType.op]);
-        print_addr((loc & 0xF0000000) | (i.JType.target << 2));
-        bdslot = true;
-        break;
-
-    case OP_LWC1:
-    case OP_SWC1:
-        db_printf("%s\tf%d,", op_name[i.IType.op],
-            i.IType.rt);
-        goto loadstore;
-
-    case OP_LB:
-    case OP_LH:
-    case OP_LW:
-    case OP_LD:
-    case OP_LBU:
-    case OP_LHU:
-    case OP_LWU:
-    case OP_SB:
-    case OP_SH:
-    case OP_SW:
-    case OP_SD:
-        db_printf("%s\t%s,", op_name[i.IType.op],
-            reg_name[i.IType.rt]);
-    loadstore:
-        db_printf("%d(%s)", (short)i.IType.imm,
-            reg_name[i.IType.rs]);
-        break;
-
-    case OP_ORI:
-    case OP_XORI:
-        if (i.IType.rs == 0) {
-            db_printf("li\t%s,0x%x",
-                reg_name[i.IType.rt],
-                i.IType.imm);
-            break;
-        }
-        /* FALLTHROUGH */
-    case OP_ANDI:
-        db_printf("%s\t%s,%s,0x%x", op_name[i.IType.op],
-            reg_name[i.IType.rt],
-            reg_name[i.IType.rs],
-            i.IType.imm);
-        break;
-
-    case OP_LUI:
-        db_printf("%s\t%s,0x%x", op_name[i.IType.op],
-            reg_name[i.IType.rt],
-            i.IType.imm);
-        break;
-
-    case OP_CACHE:
-        db_printf("%s\t0x%x,0x%x(%s)",
-            op_name[i.IType.op],
-            i.IType.rt,
-            i.IType.imm,
-            reg_name[i.IType.rs]);
-        break;
-
-    case OP_ADDI:
-    case OP_DADDI:
-    case OP_ADDIU:
-    case OP_DADDIU:
-        if (i.IType.rs == 0) {
-            db_printf("li\t%s,%d",
-                reg_name[i.IType.rt],
-                (short)i.IType.imm);
-            break;
-        }
-        /* FALLTHROUGH */
-    default:
-        db_printf("%s\t%s,%s,%d", op_name[i.IType.op],
-            reg_name[i.IType.rt],
-            reg_name[i.IType.rs],
-            (short)i.IType.imm);
-    }
-    // db_printf("\n");
-    // if (bdslot) {
-    //     db_printf("   bd: ");
-    //     mips_disassem(loc+4);
-    //     return (loc + 8);
-    // }
-    return (loc + 4);
-}
-
-static void
-print_addr(db_addr_t loc)
-{
-    db_printf("0x%08x", loc);
-}
-
-
-
-static void db_printf(const char* fmt, ...)
-{
-    int cnt;
-    va_list argp;
-    va_start(argp, fmt);
-    if (sprintf_buffer) {
-        cnt = vsnprintf(sprintf_buffer, sprintf_buf_len, fmt, argp);
-        sprintf_buffer += cnt;
-        sprintf_buf_len -= cnt;
-    } else {
-        vprintf(fmt, argp);
-    }
-    va_end(argp);
-}
-
-
-/*
- * Disassemble instruction at 'loc'.
- * Return address of start of next instruction.
- * Since this function is used by 'examine' and by 'step'
- * "next instruction" does NOT mean the next instruction to
- * be executed but the 'linear' next instruction.
- */
-db_addr_t
-mips_disassem(db_addr_t loc, char *di_buffer, int alt_dis_format)
-{
-    u_int32_t instr;
-
-    if (alt_dis_format) {   // use ARM register names for disassembly
-        reg_name = &alt_arm_reg_name[0];
-    }
-
-    sprintf_buffer = di_buffer;     // quick 'n' dirty printf() vs sprintf()
-    sprintf_buf_len = 39;           // should be passed in
-
-    instr =  *(u_int32_t *)loc;
-    return (db_disasm_insn(instr, loc, false));
-}
-
diff --git a/libpixelflinger/codeflinger/mips_disassem.h b/libpixelflinger/codeflinger/mips_disassem.h
deleted file mode 100644
index 2d5b7f5..0000000
--- a/libpixelflinger/codeflinger/mips_disassem.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*  $NetBSD: db_disasm.c,v 1.19 2007/02/28 04:21:53 thorpej Exp $   */
-
-/*-
- * Copyright (c) 1991, 1993
- *  The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ralph Campbell.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *  from: @(#)kadb.c    8.1 (Berkeley) 6/10/93
- */
-
-
-
-#ifndef ANDROID_MIPS_DISASSEM_H
-#define ANDROID_MIPS_DISASSEM_H
-
-#include <sys/types.h>
-
-#if __cplusplus
-extern "C" {
-#endif
-
-
-// could add an interface like this, but I have not
-// typedef struct {
-//  u_int   (*di_readword)(u_int);
-//  void    (*di_printaddr)(u_int);
-//  void    (*di_printf)(const char *, ...);
-// } disasm_interface_t;
-
-/* Prototypes for callable functions */
-
-// u_int disasm(const disasm_interface_t *, u_int, int);
-
-void mips_disassem(uint32_t *location, char *di_buffer, int alt_fmt);
-
-#if __cplusplus
-}
-#endif
-
-#endif /* !ANDROID_MIPS_DISASSEM_H */
diff --git a/libpixelflinger/codeflinger/mips_opcode.h b/libpixelflinger/codeflinger/mips_opcode.h
deleted file mode 100644
index 45bb19e..0000000
--- a/libpixelflinger/codeflinger/mips_opcode.h
+++ /dev/null
@@ -1,410 +0,0 @@
-/*  $NetBSD: mips_opcode.h,v 1.12 2005/12/11 12:18:09 christos Exp $    */
-
-/*-
- * Copyright (c) 1992, 1993
- *  The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ralph Campbell.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *  @(#)mips_opcode.h   8.1 (Berkeley) 6/10/93
- */
-
-/*
- * Define the instruction formats and opcode values for the
- * MIPS instruction set.
- */
-
-#include <endian.h>
-
-/*
- * Define the instruction formats.
- */
-typedef union {
-    unsigned word;
-
-#if BYTE_ORDER == LITTLE_ENDIAN
-    struct {
-        unsigned imm: 16;
-        unsigned rt: 5;
-        unsigned rs: 5;
-        unsigned op: 6;
-    } IType;
-
-    struct {
-        unsigned target: 26;
-        unsigned op: 6;
-    } JType;
-
-    struct {
-        unsigned func: 6;
-        unsigned shamt: 5;
-        unsigned rd: 5;
-        unsigned rt: 5;
-        unsigned rs: 5;
-        unsigned op: 6;
-    } RType;
-
-    struct {
-        unsigned func: 6;
-        unsigned fd: 5;
-        unsigned fs: 5;
-        unsigned ft: 5;
-        unsigned fmt: 4;
-        unsigned : 1;       /* always '1' */
-        unsigned op: 6;     /* always '0x11' */
-    } FRType;
-#endif
-#if BYTE_ORDER == BIG_ENDIAN
-    struct {
-        unsigned op: 6;
-        unsigned rs: 5;
-        unsigned rt: 5;
-        unsigned imm: 16;
-    } IType;
-
-    struct {
-        unsigned op: 6;
-        unsigned target: 26;
-    } JType;
-
-    struct {
-        unsigned op: 6;
-        unsigned rs: 5;
-        unsigned rt: 5;
-        unsigned rd: 5;
-        unsigned shamt: 5;
-        unsigned func: 6;
-    } RType;
-
-    struct {
-        unsigned op: 6;     /* always '0x11' */
-        unsigned : 1;       /* always '1' */
-        unsigned fmt: 4;
-        unsigned ft: 5;
-        unsigned fs: 5;
-        unsigned fd: 5;
-        unsigned func: 6;
-    } FRType;
-#endif
-} InstFmt;
-
-/*
- * Values for the 'op' field.
- */
-#define OP_SPECIAL  000
-#define OP_BCOND    001
-#define OP_J        002
-#define OP_JAL      003
-#define OP_BEQ      004
-#define OP_BNE      005
-#define OP_BLEZ     006
-#define OP_BGTZ     007
-
-#if __mips_isa_rev < 6
-#define OP_ADDI     010
-#else
-#define OP_POP10    010
-#endif
-
-#define OP_ADDIU    011
-#define OP_SLTI     012
-#define OP_SLTIU    013
-#define OP_ANDI     014
-#define OP_ORI      015
-#define OP_XORI     016
-
-#if __mips_isa_rev < 6
-#define OP_LUI      017
-#else
-#define OP_AUI      017
-#endif
-
-#define OP_COP0     020
-#define OP_COP1     021
-#define OP_COP2     022
-
-#if __mips_isa_rev < 6
-#define OP_COP3     023
-#define OP_BEQL     024
-#define OP_BNEL     025
-#define OP_BLEZL    026
-#define OP_BGTZL    027
-#define OP_DADDI    030
-#else
-#define OP_POP26    026
-#define OP_POP27    027
-#define OP_POP30    030
-#endif
-
-#define OP_DADDIU   031
-
-#if __mips_isa_rev < 6
-#define OP_LDL      032
-#define OP_LDR      033
-#define OP_SPECIAL2 034
-#else
-#define OP_DAUI     035
-#endif
-
-#define OP_SPECIAL3 037
-
-#define OP_LB       040
-#define OP_LH       041
-
-#if __mips_isa_rev < 6
-#define OP_LWL      042
-#endif
-
-#define OP_LW       043
-#define OP_LBU      044
-#define OP_LHU      045
-#define OP_LWR      046
-#define OP_LHU      045
-
-#if __mips_isa_rev < 6
-#define OP_LWR      046
-#endif
-
-#define OP_LWU      047
-
-#define OP_SB       050
-#define OP_SH       051
-
-#if __mips_isa_rev < 6
-#define OP_SWL      052
-#endif
-
-#define OP_SW       053
-
-#if __mips_isa_rev < 6
-#define OP_SDL      054
-#define OP_SDR      055
-#define OP_SWR      056
-#define OP_CACHE    057
-#define OP_LL       060
-#define OP_LWC0     OP_LL
-#define OP_LWC1     061
-#define OP_LWC2     062
-#define OP_LWC3     063
-#define OP_LLD      064
-#else
-#define OP_LWC1     061
-#define OP_BC       062
-#endif
-
-#define OP_LDC1     065
-#define OP_LD       067
-
-#if __mips_isa_rev < 6
-#define OP_SC       070
-#define OP_SWC0     OP_SC
-#endif
-
-#define OP_SWC1     071
-
-#if __mips_isa_rev < 6
-#define OP_SWC2     072
-#define OP_SWC3     073
-#define OP_SCD      074
-#else
-#define OP_BALC     072
-#endif
-
-#define OP_SDC1     075
-#define OP_SD       077
-
-/*
- * Values for the 'func' field when 'op' == OP_SPECIAL.
- */
-#define OP_SLL      000
-#define OP_SRL      002
-#define OP_SRA      003
-#define OP_SLLV     004
-#define OP_SRLV     006
-#define OP_SRAV     007
-
-#if __mips_isa_rev < 6
-#define OP_JR       010
-#endif
-
-#define OP_JALR     011
-#define OP_SYSCALL  014
-#define OP_BREAK    015
-#define OP_SYNC     017
-
-#if __mips_isa_rev < 6
-#define OP_MFHI     020
-#define OP_MTHI     021
-#define OP_MFLO     022
-#define OP_MTLO     023
-#else
-#define OP_CLZ      020
-#define OP_CLO      021
-#define OP_DCLZ     022
-#define OP_DCLO     023
-#endif
-
-#define OP_DSLLV    024
-#define OP_DSRLV    026
-#define OP_DSRAV    027
-
-#if __mips_isa_rev < 6
-#define OP_MULT     030
-#define OP_MULTU    031
-#define OP_DIV      032
-#define OP_DIVU     033
-#define OP_DMULT    034
-#define OP_DMULTU   035
-#define OP_DDIV     036
-#define OP_DDIVU    037
-#else
-#define OP_SOP30    030
-#define OP_SOP31    031
-#define OP_SOP32    032
-#define OP_SOP33    033
-#define OP_SOP34    034
-#define OP_SOP35    035
-#define OP_SOP36    036
-#define OP_SOP37    037
-#endif
-
-#define OP_ADD      040
-#define OP_ADDU     041
-#define OP_SUB      042
-#define OP_SUBU     043
-#define OP_AND      044
-#define OP_OR       045
-#define OP_XOR      046
-#define OP_NOR      047
-
-#define OP_SLT      052
-#define OP_SLTU     053
-#define OP_DADD     054
-#define OP_DADDU    055
-#define OP_DSUB     056
-#define OP_DSUBU    057
-
-#define OP_TGE      060
-#define OP_TGEU     061
-#define OP_TLT      062
-#define OP_TLTU     063
-#define OP_TEQ      064
-#define OP_TNE      066
-
-#define OP_DSLL     070
-#define OP_DSRL     072
-#define OP_DSRA     073
-#define OP_DSLL32   074
-#define OP_DSRL32   076
-#define OP_DSRA32   077
-
-#if __mips_isa_rev < 6
-/*
- * Values for the 'func' field when 'op' == OP_SPECIAL2.
- * OP_SPECIAL2 opcodes are removed in mips32r6
- */
-#define OP_MAD      000     /* QED */
-#define OP_MADU     001     /* QED */
-#define OP_MUL      002     /* QED */
-#endif
-
-/*
- * Values for the 'func' field when 'op' == OP_SPECIAL3.
- */
-#define OP_EXT      000
-#define OP_DEXTM    001
-#define OP_DEXTU    002
-#define OP_DEXT     003
-#define OP_INS      004
-#define OP_DINSM    005
-#define OP_DINSU    006
-#define OP_DINS     007
-#define OP_BSHFL    040
-#define OP_RDHWR    073
-
-/*
- * Values for the 'shamt' field when OP_SPECIAL3 && func OP_BSHFL.
- */
-
-#define OP_WSBH     002
-#define OP_SEB      020
-#define OP_SEH      030
-
-#if __mips_isa_rev == 6
-/*
- * Values for the 'shamt' field when OP_SOP30.
- */
-#define OP_MUL      002
-#define OP_MUH      003
-#endif
-
-/*
- * Values for the 'func' field when 'op' == OP_BCOND.
- */
-#define OP_BLTZ     000
-#define OP_BGEZ     001
-
-#if __mips_isa_rev < 6
-#define OP_BLTZL    002
-#define OP_BGEZL    003
-#define OP_TGEI     010
-#define OP_TGEIU    011
-#define OP_TLTI     012
-#define OP_TLTIU    013
-#define OP_TEQI     014
-#define OP_TNEI     016
-#define OP_BLTZAL   020
-#define OP_BGEZAL   021
-#define OP_BLTZALL  022
-#define OP_BGEZALL  023
-#else
-#define OP_NAL      020
-#define OP_BAL      021
-#endif
-
-/*
- * Values for the 'rs' field when 'op' == OP_COPz.
- */
-#define OP_MF       000
-#define OP_DMF      001
-#define OP_MT       004
-#define OP_DMT      005
-#define OP_BCx      010
-#define OP_BCy      014
-#define OP_CF       002
-#define OP_CT       006
-
-/*
- * Values for the 'rt' field when 'op' == OP_COPz.
- */
-#define COPz_BC_TF_MASK 0x01
-#define COPz_BC_TRUE    0x01
-#define COPz_BC_FALSE   0x00
-#define COPz_BCL_TF_MASK    0x02
-#define COPz_BCL_TRUE   0x02
-#define COPz_BCL_FALSE  0x00
diff --git a/libpixelflinger/codeflinger/texturing.cpp b/libpixelflinger/codeflinger/texturing.cpp
deleted file mode 100644
index e6997bd..0000000
--- a/libpixelflinger/codeflinger/texturing.cpp
+++ /dev/null
@@ -1,1261 +0,0 @@
-/* libs/pixelflinger/codeflinger/texturing.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "pixelflinger-code"
-
-#include <assert.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-
-#include <log/log.h>
-
-#include "GGLAssembler.h"
-
-namespace android {
-
-// ---------------------------------------------------------------------------
-
-// iterators are initialized like this:
-// (intToFixedCenter(x) * dx)>>16 + x0
-// ((x<<16 + 0x8000) * dx)>>16 + x0
-// ((x<<16)*dx + (0x8000*dx))>>16 + x0
-// ( (x*dx) + dx>>1 ) + x0
-// (x*dx) + (dx>>1 + x0)
-
-void GGLAssembler::init_iterated_color(fragment_parts_t& parts, const reg_t& x)
-{
-    context_t const* c = mBuilderContext.c;
-
-    if (mSmooth) {
-        // NOTE: we could take this case in the mDithering + !mSmooth case,
-        // but this would use up to 4 more registers for the color components
-        // for only a little added quality.
-        // Currently, this causes the system to run out of registers in
-        // some case (see issue #719496)
-
-        comment("compute initial iterated color (smooth and/or dither case)");
-
-        parts.iterated_packed = 0;
-        parts.packed = 0;
-
-        // 0x1: color component
-        // 0x2: iterators
-        const int optReload = mOptLevel >> 1;
-        if (optReload >= 3)         parts.reload = 0; // reload nothing
-        else if (optReload == 2)    parts.reload = 2; // reload iterators
-        else if (optReload == 1)    parts.reload = 1; // reload colors
-        else if (optReload <= 0)    parts.reload = 3; // reload both
-
-        if (!mSmooth) {
-            // we're not smoothing (just dithering), we never have to 
-            // reload the iterators
-            parts.reload &= ~2;
-        }
-
-        Scratch scratches(registerFile());
-        const int t0 = (parts.reload & 1) ? scratches.obtain() : 0;
-        const int t1 = (parts.reload & 2) ? scratches.obtain() : 0;
-        for (int i=0 ; i<4 ; i++) {
-            if (!mInfo[i].iterated)
-                continue;            
-            
-            // this component exists in the destination and is not replaced
-            // by a texture unit.
-            const int c = (parts.reload & 1) ? t0 : obtainReg();              
-            if (i==0) CONTEXT_LOAD(c, iterators.ydady);
-            if (i==1) CONTEXT_LOAD(c, iterators.ydrdy);
-            if (i==2) CONTEXT_LOAD(c, iterators.ydgdy);
-            if (i==3) CONTEXT_LOAD(c, iterators.ydbdy);
-            parts.argb[i].reg = c;
-
-            if (mInfo[i].smooth) {
-                parts.argb_dx[i].reg = (parts.reload & 2) ? t1 : obtainReg();
-                const int dvdx = parts.argb_dx[i].reg;
-                CONTEXT_LOAD(dvdx, generated_vars.argb[i].dx);
-                MLA(AL, 0, c, x.reg, dvdx, c);
-                
-                // adjust the color iterator to make sure it won't overflow
-                if (!mAA) {
-                    // this is not needed when we're using anti-aliasing
-                    // because we will (have to) clamp the components
-                    // anyway.
-                    int end = scratches.obtain();
-                    MOV(AL, 0, end, reg_imm(parts.count.reg, LSR, 16));
-                    MLA(AL, 1, end, dvdx, end, c);
-                    SUB(MI, 0, c, c, end);
-                    BIC(AL, 0, c, c, reg_imm(c, ASR, 31)); 
-                    scratches.recycle(end);
-                }
-            }
-            
-            if (parts.reload & 1) {
-                CONTEXT_STORE(c, generated_vars.argb[i].c);
-            }
-        }
-    } else {
-        // We're not smoothed, so we can 
-        // just use a packed version of the color and extract the
-        // components as needed (or not at all if we don't blend)
-
-        // figure out if we need the iterated color
-        int load = 0;
-        for (int i=0 ; i<4 ; i++) {
-            component_info_t& info = mInfo[i];
-            if ((info.inDest || info.needed) && !info.replaced)
-                load |= 1;
-        }
-        
-        parts.iterated_packed = 1;
-        parts.packed = (!mTextureMachine.mask && !mBlending
-                && !mFog && !mDithering);
-        parts.reload = 0;
-        if (load || parts.packed) {
-            if (mBlending || mDithering || mInfo[GGLFormat::ALPHA].needed) {
-                comment("load initial iterated color (8888 packed)");
-                parts.iterated.setTo(obtainReg(),
-                        &(c->formats[GGL_PIXEL_FORMAT_RGBA_8888]));
-                CONTEXT_LOAD(parts.iterated.reg, packed8888);
-            } else {
-                comment("load initial iterated color (dest format packed)");
-
-                parts.iterated.setTo(obtainReg(), &mCbFormat);
-
-                // pre-mask the iterated color
-                const int bits = parts.iterated.size();
-                const uint32_t size = ((bits>=32) ? 0 : (1LU << bits)) - 1;
-                uint32_t mask = 0;
-                if (mMasking) {
-                    for (int i=0 ; i<4 ; i++) {
-                        const int component_mask = 1<<i;
-                        const int h = parts.iterated.format.c[i].h;
-                        const int l = parts.iterated.format.c[i].l;
-                        if (h && (!(mMasking & component_mask))) {
-                            mask |= ((1<<(h-l))-1) << l;
-                        }
-                    }
-                }
-
-                if (mMasking && ((mask & size)==0)) {
-                    // none of the components are present in the mask
-                } else {
-                    CONTEXT_LOAD(parts.iterated.reg, packed);
-                    if (mCbFormat.size == 1) {
-                        AND(AL, 0, parts.iterated.reg,
-                                parts.iterated.reg, imm(0xFF));
-                    } else if (mCbFormat.size == 2) {
-                        MOV(AL, 0, parts.iterated.reg,
-                                reg_imm(parts.iterated.reg, LSR, 16));
-                    }
-                }
-
-                // pre-mask the iterated color
-                if (mMasking) {
-                    build_and_immediate(parts.iterated.reg, parts.iterated.reg,
-                            mask, bits);
-                }
-            }
-        }
-    }
-}
-
-void GGLAssembler::build_iterated_color(
-        component_t& fragment,
-        const fragment_parts_t& parts,
-        int component,
-        Scratch& regs)
-{
-    fragment.setTo( regs.obtain(), 0, 32, CORRUPTIBLE); 
-
-    if (!mInfo[component].iterated)
-        return;
-
-    if (parts.iterated_packed) {
-        // iterated colors are packed, extract the one we need
-        extract(fragment, parts.iterated, component);
-    } else {
-        fragment.h = GGL_COLOR_BITS;
-        fragment.l = GGL_COLOR_BITS - 8;
-        fragment.flags |= CLEAR_LO;
-        // iterated colors are held in their own register,
-        // (smooth and/or dithering case)
-        if (parts.reload==3) {
-            // this implies mSmooth
-            Scratch scratches(registerFile());
-            int dx = scratches.obtain();
-            CONTEXT_LOAD(fragment.reg, generated_vars.argb[component].c);
-            CONTEXT_LOAD(dx, generated_vars.argb[component].dx);
-            ADD(AL, 0, dx, fragment.reg, dx);
-            CONTEXT_STORE(dx, generated_vars.argb[component].c);
-        } else if (parts.reload & 1) {
-            CONTEXT_LOAD(fragment.reg, generated_vars.argb[component].c);
-        } else {
-            // we don't reload, so simply rename the register and mark as
-            // non CORRUPTIBLE so that the texture env or blending code
-            // won't modify this (renamed) register
-            regs.recycle(fragment.reg);
-            fragment.reg = parts.argb[component].reg;
-            fragment.flags &= ~CORRUPTIBLE;
-        }
-        if (mInfo[component].smooth && mAA) {
-            // when using smooth shading AND anti-aliasing, we need to clamp
-            // the iterators because there is always an extra pixel on the
-            // edges, which most of the time will cause an overflow
-            // (since technically its outside of the domain).
-            BIC(AL, 0, fragment.reg, fragment.reg,
-                    reg_imm(fragment.reg, ASR, 31));
-            component_sat(fragment);
-        }
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::decodeLogicOpNeeds(const needs_t& needs)
-{
-    // gather some informations about the components we need to process...
-    const int opcode = GGL_READ_NEEDS(LOGIC_OP, needs.n) | GGL_CLEAR;
-    switch(opcode) {
-    case GGL_COPY:
-        mLogicOp = 0;
-        break;
-    case GGL_CLEAR:
-    case GGL_SET:
-        mLogicOp = LOGIC_OP;
-        break;
-    case GGL_AND:
-    case GGL_AND_REVERSE:
-    case GGL_AND_INVERTED:
-    case GGL_XOR:
-    case GGL_OR:
-    case GGL_NOR:
-    case GGL_EQUIV:
-    case GGL_OR_REVERSE:
-    case GGL_OR_INVERTED:
-    case GGL_NAND:
-        mLogicOp = LOGIC_OP|LOGIC_OP_SRC|LOGIC_OP_DST;
-        break;
-    case GGL_NOOP:
-    case GGL_INVERT:
-        mLogicOp = LOGIC_OP|LOGIC_OP_DST;
-        break;        
-    case GGL_COPY_INVERTED:
-        mLogicOp = LOGIC_OP|LOGIC_OP_SRC;
-        break;
-    };        
-}
-
-void GGLAssembler::decodeTMUNeeds(const needs_t& needs, context_t const* c)
-{
-    uint8_t replaced=0;
-    mTextureMachine.mask = 0;
-    mTextureMachine.activeUnits = 0;
-    for (int i=GGL_TEXTURE_UNIT_COUNT-1 ; i>=0 ; i--) {
-        texture_unit_t& tmu = mTextureMachine.tmu[i];
-        if (replaced == 0xF) {
-            // all components are replaced, skip this TMU.
-            tmu.format_idx = 0;
-            tmu.mask = 0;
-            tmu.replaced = replaced;
-            continue;
-        }
-        tmu.format_idx = GGL_READ_NEEDS(T_FORMAT, needs.t[i]);
-        tmu.format = c->formats[tmu.format_idx];
-        tmu.bits = tmu.format.size*8;
-        tmu.swrap = GGL_READ_NEEDS(T_S_WRAP, needs.t[i]);
-        tmu.twrap = GGL_READ_NEEDS(T_T_WRAP, needs.t[i]);
-        tmu.env = ggl_needs_to_env(GGL_READ_NEEDS(T_ENV, needs.t[i]));
-        tmu.pot = GGL_READ_NEEDS(T_POT, needs.t[i]);
-        tmu.linear = GGL_READ_NEEDS(T_LINEAR, needs.t[i])
-                && tmu.format.size!=3; // XXX: only 8, 16 and 32 modes for now
-
-        // 5551 linear filtering is not supported
-        if (tmu.format_idx == GGL_PIXEL_FORMAT_RGBA_5551)
-            tmu.linear = 0;
-        
-        tmu.mask = 0;
-        tmu.replaced = replaced;
-
-        if (tmu.format_idx) {
-            mTextureMachine.activeUnits++;
-            if (tmu.format.c[0].h)    tmu.mask |= 0x1;
-            if (tmu.format.c[1].h)    tmu.mask |= 0x2;
-            if (tmu.format.c[2].h)    tmu.mask |= 0x4;
-            if (tmu.format.c[3].h)    tmu.mask |= 0x8;
-            if (tmu.env == GGL_REPLACE) {
-                replaced |= tmu.mask;
-            } else if (tmu.env == GGL_DECAL) {
-                if (!tmu.format.c[GGLFormat::ALPHA].h) {
-                    // if we don't have alpha, decal does nothing
-                    tmu.mask = 0;
-                } else {
-                    // decal always ignores At
-                    tmu.mask &= ~(1<<GGLFormat::ALPHA);
-                }
-            }
-        }
-        mTextureMachine.mask |= tmu.mask;
-        //printf("%d: mask=%08lx, replaced=%08lx\n",
-        //    i, int(tmu.mask), int(tmu.replaced));
-    }
-    mTextureMachine.replaced = replaced;
-    mTextureMachine.directTexture = 0;
-    //printf("replaced=%08lx\n", mTextureMachine.replaced);
-}
-
-
-void GGLAssembler::init_textures(
-        tex_coord_t* coords,
-        const reg_t& x, const reg_t& y)
-{
-    const needs_t& needs = mBuilderContext.needs;
-    int Rx = x.reg;
-    int Ry = y.reg;
-
-    if (mTextureMachine.mask) {
-        comment("compute texture coordinates");
-    }
-
-    // init texture coordinates for each tmu
-    const int cb_format_idx = GGL_READ_NEEDS(CB_FORMAT, needs.n);
-    const bool multiTexture = mTextureMachine.activeUnits > 1;
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT; i++) {
-        const texture_unit_t& tmu = mTextureMachine.tmu[i];
-        if (tmu.format_idx == 0)
-            continue;
-        if ((tmu.swrap == GGL_NEEDS_WRAP_11) &&
-            (tmu.twrap == GGL_NEEDS_WRAP_11)) 
-        {
-            // 1:1 texture
-            pointer_t& txPtr = coords[i].ptr;
-            txPtr.setTo(obtainReg(), tmu.bits);
-            CONTEXT_LOAD(txPtr.reg, state.texture[i].iterators.ydsdy);
-            ADD(AL, 0, Rx, Rx, reg_imm(txPtr.reg, ASR, 16));    // x += (s>>16)
-            CONTEXT_LOAD(txPtr.reg, state.texture[i].iterators.ydtdy);
-            ADD(AL, 0, Ry, Ry, reg_imm(txPtr.reg, ASR, 16));    // y += (t>>16)
-            // merge base & offset
-            CONTEXT_LOAD(txPtr.reg, generated_vars.texture[i].stride);
-            SMLABB(AL, Rx, Ry, txPtr.reg, Rx);               // x+y*stride
-            CONTEXT_ADDR_LOAD(txPtr.reg, generated_vars.texture[i].data);
-            base_offset(txPtr, txPtr, Rx);
-        } else {
-            Scratch scratches(registerFile());
-            reg_t& s = coords[i].s;
-            reg_t& t = coords[i].t;
-            // s = (x * dsdx)>>16 + ydsdy
-            // s = (x * dsdx)>>16 + (y*dsdy)>>16 + s0
-            // t = (x * dtdx)>>16 + ydtdy
-            // t = (x * dtdx)>>16 + (y*dtdy)>>16 + t0
-            s.setTo(obtainReg());
-            t.setTo(obtainReg());
-            const int need_w = GGL_READ_NEEDS(W, needs.n);
-            if (need_w) {
-                CONTEXT_LOAD(s.reg, state.texture[i].iterators.ydsdy);
-                CONTEXT_LOAD(t.reg, state.texture[i].iterators.ydtdy);
-            } else {
-                int ydsdy = scratches.obtain();
-                int ydtdy = scratches.obtain();
-                CONTEXT_LOAD(s.reg, generated_vars.texture[i].dsdx);
-                CONTEXT_LOAD(ydsdy, state.texture[i].iterators.ydsdy);
-                CONTEXT_LOAD(t.reg, generated_vars.texture[i].dtdx);
-                CONTEXT_LOAD(ydtdy, state.texture[i].iterators.ydtdy);
-                MLA(AL, 0, s.reg, Rx, s.reg, ydsdy);
-                MLA(AL, 0, t.reg, Rx, t.reg, ydtdy);
-            }
-            
-            if ((mOptLevel&1)==0) {
-                CONTEXT_STORE(s.reg, generated_vars.texture[i].spill[0]);
-                CONTEXT_STORE(t.reg, generated_vars.texture[i].spill[1]);
-                recycleReg(s.reg);
-                recycleReg(t.reg);
-            }
-        }
-
-        // direct texture?
-        if (!multiTexture && !mBlending && !mDithering && !mFog && 
-            cb_format_idx == tmu.format_idx && !tmu.linear &&
-            mTextureMachine.replaced == tmu.mask) 
-        {
-                mTextureMachine.directTexture = i + 1; 
-        }
-    }
-}
-
-void GGLAssembler::build_textures(  fragment_parts_t& parts,
-                                    Scratch& regs)
-{
-    // We don't have a way to spill registers automatically
-    // spill depth and AA regs, when we know we may have to.
-    // build the spill list...
-    uint32_t spill_list = 0;
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT; i++) {
-        const texture_unit_t& tmu = mTextureMachine.tmu[i];
-        if (tmu.format_idx == 0)
-            continue;
-        if (tmu.linear) {
-            // we may run out of register if we have linear filtering
-            // at 1 or 4 bytes / pixel on any texture unit.
-            if (tmu.format.size == 1) {
-                // if depth and AA enabled, we'll run out of 1 register
-                if (parts.z.reg > 0 && parts.covPtr.reg > 0)
-                    spill_list |= 1<<parts.covPtr.reg;
-            }
-            if (tmu.format.size == 4) {
-                // if depth or AA enabled, we'll run out of 1 or 2 registers
-                if (parts.z.reg > 0)
-                    spill_list |= 1<<parts.z.reg;
-                if (parts.covPtr.reg > 0)   
-                    spill_list |= 1<<parts.covPtr.reg;
-            }
-        }
-    }
-
-    Spill spill(registerFile(), *this, spill_list);
-
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT; i++) {
-        const texture_unit_t& tmu = mTextureMachine.tmu[i];
-        if (tmu.format_idx == 0)
-            continue;
-
-        pointer_t& txPtr = parts.coords[i].ptr;
-        pixel_t& texel = parts.texel[i];
-
-        // repeat...
-        if ((tmu.swrap == GGL_NEEDS_WRAP_11) &&
-            (tmu.twrap == GGL_NEEDS_WRAP_11))
-        { // 1:1 textures
-            comment("fetch texel");
-            texel.setTo(regs.obtain(), &tmu.format);
-            load(txPtr, texel, WRITE_BACK);
-        } else {
-            Scratch scratches(registerFile());
-            reg_t& s = parts.coords[i].s;
-            reg_t& t = parts.coords[i].t;
-            if ((mOptLevel&1)==0) {
-                comment("reload s/t (multitexture or linear filtering)");
-                s.reg = scratches.obtain();
-                t.reg = scratches.obtain();
-                CONTEXT_LOAD(s.reg, generated_vars.texture[i].spill[0]);
-                CONTEXT_LOAD(t.reg, generated_vars.texture[i].spill[1]);
-            }
-
-            if (registerFile().status() & RegisterFile::OUT_OF_REGISTERS)
-                return;
-
-            comment("compute repeat/clamp");
-            int u       = scratches.obtain();
-            int v       = scratches.obtain();
-            int width   = scratches.obtain();
-            int height  = scratches.obtain();
-            int U = 0;
-            int V = 0;
-
-            if (registerFile().status() & RegisterFile::OUT_OF_REGISTERS)
-                return;
-
-            CONTEXT_LOAD(width,  generated_vars.texture[i].width);
-            CONTEXT_LOAD(height, generated_vars.texture[i].height);
-
-            int FRAC_BITS = 0;
-            if (tmu.linear) {
-                // linear interpolation
-                if (tmu.format.size == 1) {
-                    // for 8-bits textures, we can afford
-                    // 7 bits of fractional precision at no
-                    // additional cost (we can't do 8 bits
-                    // because filter8 uses signed 16 bits muls)
-                    FRAC_BITS = 7;
-                } else if (tmu.format.size == 2) {
-                    // filter16() is internally limited to 4 bits, so:
-                    // FRAC_BITS=2 generates less instructions,
-                    // FRAC_BITS=3,4,5 creates unpleasant artifacts,
-                    // FRAC_BITS=6+ looks good
-                    FRAC_BITS = 6;
-                } else if (tmu.format.size == 4) {
-                    // filter32() is internally limited to 8 bits, so:
-                    // FRAC_BITS=4 looks good
-                    // FRAC_BITS=5+ looks better, but generates 3 extra ipp
-                    FRAC_BITS = 6;
-                } else {
-                    // for all other cases we use 4 bits.
-                    FRAC_BITS = 4;
-                }
-            }
-            wrapping(u, s.reg, width,  tmu.swrap, FRAC_BITS);
-            wrapping(v, t.reg, height, tmu.twrap, FRAC_BITS);
-
-            if (tmu.linear) {
-                comment("compute linear filtering offsets");
-                // pixel size scale
-                const int shift = 31 - gglClz(tmu.format.size);
-                U = scratches.obtain();
-                V = scratches.obtain();
-
-                if (registerFile().status() & RegisterFile::OUT_OF_REGISTERS)
-                    return;
-
-                // sample the texel center
-                SUB(AL, 0, u, u, imm(1<<(FRAC_BITS-1)));
-                SUB(AL, 0, v, v, imm(1<<(FRAC_BITS-1)));
-
-                // get the fractionnal part of U,V
-                AND(AL, 0, U, u, imm((1<<FRAC_BITS)-1));
-                AND(AL, 0, V, v, imm((1<<FRAC_BITS)-1));
-
-                // compute width-1 and height-1
-                SUB(AL, 0, width,  width,  imm(1));
-                SUB(AL, 0, height, height, imm(1));
-
-                // get the integer part of U,V and clamp/wrap
-                // and compute offset to the next texel
-                if (tmu.swrap == GGL_NEEDS_WRAP_REPEAT) {
-                    // u has already been REPEATed
-                    MOV(AL, 1, u, reg_imm(u, ASR, FRAC_BITS));
-                    MOV(MI, 0, u, width);                    
-                    CMP(AL, u, width);
-                    MOV(LT, 0, width, imm(1 << shift));
-                    if (shift)
-                        MOV(GE, 0, width, reg_imm(width, LSL, shift));
-                    RSB(GE, 0, width, width, imm(0));
-                } else {
-                    // u has not been CLAMPed yet
-                    // algorithm:
-                    // if ((u>>4) >= width)
-                    //      u = width<<4
-                    //      width = 0
-                    // else
-                    //      width = 1<<shift
-                    // u = u>>4; // get integer part
-                    // if (u<0)
-                    //      u = 0
-                    //      width = 0
-                    // generated_vars.rt = width
-                    
-                    CMP(AL, width, reg_imm(u, ASR, FRAC_BITS));
-                    MOV(LE, 0, u, reg_imm(width, LSL, FRAC_BITS));
-                    MOV(LE, 0, width, imm(0));
-                    MOV(GT, 0, width, imm(1 << shift));
-                    MOV(AL, 1, u, reg_imm(u, ASR, FRAC_BITS));
-                    MOV(MI, 0, u, imm(0));
-                    MOV(MI, 0, width, imm(0));
-                }
-                CONTEXT_STORE(width, generated_vars.rt);
-
-                const int stride = width;
-                CONTEXT_LOAD(stride, generated_vars.texture[i].stride);
-                if (tmu.twrap == GGL_NEEDS_WRAP_REPEAT) {
-                    // v has already been REPEATed
-                    MOV(AL, 1, v, reg_imm(v, ASR, FRAC_BITS));
-                    MOV(MI, 0, v, height);
-                    CMP(AL, v, height);
-                    MOV(LT, 0, height, imm(1 << shift));
-                    if (shift)
-                        MOV(GE, 0, height, reg_imm(height, LSL, shift));
-                    RSB(GE, 0, height, height, imm(0));
-                    MUL(AL, 0, height, stride, height);
-                } else {
-                    // v has not been CLAMPed yet
-                    CMP(AL, height, reg_imm(v, ASR, FRAC_BITS));
-                    MOV(LE, 0, v, reg_imm(height, LSL, FRAC_BITS));
-                    MOV(LE, 0, height, imm(0));
-                    if (shift) {
-                        MOV(GT, 0, height, reg_imm(stride, LSL, shift));
-                    } else {
-                        MOV(GT, 0, height, stride);
-                    }
-                    MOV(AL, 1, v, reg_imm(v, ASR, FRAC_BITS));
-                    MOV(MI, 0, v, imm(0));
-                    MOV(MI, 0, height, imm(0));
-                }
-                CONTEXT_STORE(height, generated_vars.lb);
-            }
-    
-            scratches.recycle(width);
-            scratches.recycle(height);
-
-            // iterate texture coordinates...
-            comment("iterate s,t");
-            int dsdx = scratches.obtain();
-            int dtdx = scratches.obtain();
-
-            if (registerFile().status() & RegisterFile::OUT_OF_REGISTERS)
-                return;
-
-            CONTEXT_LOAD(dsdx, generated_vars.texture[i].dsdx);
-            CONTEXT_LOAD(dtdx, generated_vars.texture[i].dtdx);
-            ADD(AL, 0, s.reg, s.reg, dsdx);
-            ADD(AL, 0, t.reg, t.reg, dtdx);
-            if ((mOptLevel&1)==0) {
-                CONTEXT_STORE(s.reg, generated_vars.texture[i].spill[0]);
-                CONTEXT_STORE(t.reg, generated_vars.texture[i].spill[1]);
-                scratches.recycle(s.reg);
-                scratches.recycle(t.reg);
-            }
-            scratches.recycle(dsdx);
-            scratches.recycle(dtdx);
-
-            // merge base & offset...
-            comment("merge base & offset");
-            texel.setTo(regs.obtain(), &tmu.format);
-            txPtr.setTo(texel.reg, tmu.bits);
-            int stride = scratches.obtain();
-
-            if (registerFile().status() & RegisterFile::OUT_OF_REGISTERS)
-                return;
-
-            CONTEXT_LOAD(stride,    generated_vars.texture[i].stride);
-            CONTEXT_ADDR_LOAD(txPtr.reg, generated_vars.texture[i].data);
-            SMLABB(AL, u, v, stride, u);    // u+v*stride 
-            base_offset(txPtr, txPtr, u);
-
-            // load texel
-            if (!tmu.linear) {
-                comment("fetch texel");
-                load(txPtr, texel, 0);
-            } else {
-                // recycle registers we don't need anymore
-                scratches.recycle(u);
-                scratches.recycle(v);
-                scratches.recycle(stride);
-
-                comment("fetch texel, bilinear");
-                switch (tmu.format.size) {
-                case 1:  filter8(parts, texel, tmu, U, V, txPtr, FRAC_BITS); break;
-                case 2: filter16(parts, texel, tmu, U, V, txPtr, FRAC_BITS); break;
-                case 3: filter24(parts, texel, tmu, U, V, txPtr, FRAC_BITS); break;
-                case 4: filter32(parts, texel, tmu, U, V, txPtr, FRAC_BITS); break;
-                }
-            }            
-        }
-    }
-}
-
-void GGLAssembler::build_iterate_texture_coordinates(
-    const fragment_parts_t& parts)
-{
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT; i++) {
-        const texture_unit_t& tmu = mTextureMachine.tmu[i];
-        if (tmu.format_idx == 0)
-            continue;
-
-        if ((tmu.swrap == GGL_NEEDS_WRAP_11) &&
-            (tmu.twrap == GGL_NEEDS_WRAP_11))
-        { // 1:1 textures
-            const pointer_t& txPtr = parts.coords[i].ptr;
-            ADD(AL, 0, txPtr.reg, txPtr.reg, imm(txPtr.size>>3));
-        } else {
-            Scratch scratches(registerFile());
-            int s = parts.coords[i].s.reg;
-            int t = parts.coords[i].t.reg;
-            if ((mOptLevel&1)==0) {
-                s = scratches.obtain();
-                t = scratches.obtain();
-                CONTEXT_LOAD(s, generated_vars.texture[i].spill[0]);
-                CONTEXT_LOAD(t, generated_vars.texture[i].spill[1]);
-            }
-            int dsdx = scratches.obtain();
-            int dtdx = scratches.obtain();
-            CONTEXT_LOAD(dsdx, generated_vars.texture[i].dsdx);
-            CONTEXT_LOAD(dtdx, generated_vars.texture[i].dtdx);
-            ADD(AL, 0, s, s, dsdx);
-            ADD(AL, 0, t, t, dtdx);
-            if ((mOptLevel&1)==0) {
-                CONTEXT_STORE(s, generated_vars.texture[i].spill[0]);
-                CONTEXT_STORE(t, generated_vars.texture[i].spill[1]);
-            }
-        }
-    }
-}
-
-void GGLAssembler::filter8(
-        const fragment_parts_t& /*parts*/,
-        pixel_t& texel, const texture_unit_t& tmu,
-        int U, int V, pointer_t& txPtr,
-        int FRAC_BITS)
-{
-    if (tmu.format.components != GGL_ALPHA &&
-        tmu.format.components != GGL_LUMINANCE)
-    {
-        // this is a packed format, and we don't support
-        // linear filtering (it's probably RGB 332)
-        // Should not happen with OpenGL|ES
-        LDRB(AL, texel.reg, txPtr.reg);
-        return;
-    }
-
-    // ------------------------
-    // about ~22 cycles / pixel
-    Scratch scratches(registerFile());
-
-    int pixel= scratches.obtain();
-    int d    = scratches.obtain();
-    int u    = scratches.obtain();
-    int k    = scratches.obtain();
-    int rt   = scratches.obtain();
-    int lb   = scratches.obtain();
-
-    // RB -> U * V
-
-    CONTEXT_LOAD(rt, generated_vars.rt);
-    CONTEXT_LOAD(lb, generated_vars.lb);
-
-    int offset = pixel;
-    ADD(AL, 0, offset, lb, rt);
-    LDRB(AL, pixel, txPtr.reg, reg_scale_pre(offset));
-    SMULBB(AL, u, U, V);
-    SMULBB(AL, d, pixel, u);
-    RSB(AL, 0, k, u, imm(1<<(FRAC_BITS*2)));
-    
-    // LB -> (1-U) * V
-    RSB(AL, 0, U, U, imm(1<<FRAC_BITS));
-    LDRB(AL, pixel, txPtr.reg, reg_scale_pre(lb));
-    SMULBB(AL, u, U, V);
-    SMLABB(AL, d, pixel, u, d);
-    SUB(AL, 0, k, k, u);
-    
-    // LT -> (1-U)*(1-V)
-    RSB(AL, 0, V, V, imm(1<<FRAC_BITS));
-    LDRB(AL, pixel, txPtr.reg);
-    SMULBB(AL, u, U, V);
-    SMLABB(AL, d, pixel, u, d);
-
-    // RT -> U*(1-V)
-    LDRB(AL, pixel, txPtr.reg, reg_scale_pre(rt));
-    SUB(AL, 0, u, k, u);
-    SMLABB(AL, texel.reg, pixel, u, d);
-    
-    for (int i=0 ; i<4 ; i++) {
-        if (!texel.format.c[i].h) continue;
-        texel.format.c[i].h = FRAC_BITS*2+8;
-        texel.format.c[i].l = FRAC_BITS*2; // keeping 8 bits in enough
-    }
-    texel.format.size = 4;
-    texel.format.bitsPerPixel = 32;
-    texel.flags |= CLEAR_LO;
-}
-
-void GGLAssembler::filter16(
-        const fragment_parts_t& /*parts*/,
-        pixel_t& texel, const texture_unit_t& tmu,
-        int U, int V, pointer_t& txPtr,
-        int FRAC_BITS)
-{    
-    // compute the mask
-    // XXX: it would be nice if the mask below could be computed
-    // automatically.
-    uint32_t mask = 0;
-    int shift = 0;
-    int prec = 0;
-    switch (tmu.format_idx) {
-        case GGL_PIXEL_FORMAT_RGB_565:
-            // source: 00000ggg.ggg00000 | rrrrr000.000bbbbb
-            // result: gggggggg.gggrrrrr | rrrrr0bb.bbbbbbbb
-            mask = 0x07E0F81F;
-            shift = 16;
-            prec = 5;
-            break;
-        case GGL_PIXEL_FORMAT_RGBA_4444:
-            // 0000,1111,0000,1111 | 0000,1111,0000,1111
-            mask = 0x0F0F0F0F;
-            shift = 12;
-            prec = 4;
-            break;
-        case GGL_PIXEL_FORMAT_LA_88:
-            // 0000,0000,1111,1111 | 0000,0000,1111,1111
-            // AALL -> 00AA | 00LL
-            mask = 0x00FF00FF;
-            shift = 8;
-            prec = 8;
-            break;
-        default:
-            // unsupported format, do something sensical...
-            ALOGE("Unsupported 16-bits texture format (%d)", tmu.format_idx);
-            LDRH(AL, texel.reg, txPtr.reg);
-            return;
-    }
-
-    const int adjust = FRAC_BITS*2 - prec;
-    const int round  = 0;
-
-    // update the texel format
-    texel.format.size = 4;
-    texel.format.bitsPerPixel = 32;
-    texel.flags |= CLEAR_HI|CLEAR_LO;
-    for (int i=0 ; i<4 ; i++) {
-        if (!texel.format.c[i].h) continue;
-        const uint32_t offset = (mask & tmu.format.mask(i)) ? 0 : shift;
-        texel.format.c[i].h = tmu.format.c[i].h + offset + prec;
-        texel.format.c[i].l = texel.format.c[i].h - (tmu.format.bits(i) + prec);
-    }
-
-    // ------------------------
-    // about ~40 cycles / pixel
-    Scratch scratches(registerFile());
-
-    int pixel= scratches.obtain();
-    int d    = scratches.obtain();
-    int u    = scratches.obtain();
-    int k    = scratches.obtain();
-
-    // RB -> U * V
-    int offset = pixel;
-    CONTEXT_LOAD(offset, generated_vars.rt);
-    CONTEXT_LOAD(u, generated_vars.lb);
-    ADD(AL, 0, offset, offset, u);
-
-    LDRH(AL, pixel, txPtr.reg, reg_pre(offset));
-    SMULBB(AL, u, U, V);
-    ORR(AL, 0, pixel, pixel, reg_imm(pixel, LSL, shift));
-    build_and_immediate(pixel, pixel, mask, 32);
-    if (adjust) {
-        if (round)
-            ADD(AL, 0, u, u, imm(1<<(adjust-1)));
-        MOV(AL, 0, u, reg_imm(u, LSR, adjust));
-    }
-    MUL(AL, 0, d, pixel, u);
-    RSB(AL, 0, k, u, imm(1<<prec));
-    
-    // LB -> (1-U) * V
-    CONTEXT_LOAD(offset, generated_vars.lb);
-    RSB(AL, 0, U, U, imm(1<<FRAC_BITS));
-    LDRH(AL, pixel, txPtr.reg, reg_pre(offset));
-    SMULBB(AL, u, U, V);
-    ORR(AL, 0, pixel, pixel, reg_imm(pixel, LSL, shift));
-    build_and_immediate(pixel, pixel, mask, 32);
-    if (adjust) {
-        if (round)
-            ADD(AL, 0, u, u, imm(1<<(adjust-1)));
-        MOV(AL, 0, u, reg_imm(u, LSR, adjust));
-    }
-    MLA(AL, 0, d, pixel, u, d);
-    SUB(AL, 0, k, k, u);
-    
-    // LT -> (1-U)*(1-V)
-    RSB(AL, 0, V, V, imm(1<<FRAC_BITS));
-    LDRH(AL, pixel, txPtr.reg);
-    SMULBB(AL, u, U, V);
-    ORR(AL, 0, pixel, pixel, reg_imm(pixel, LSL, shift));
-    build_and_immediate(pixel, pixel, mask, 32);
-    if (adjust) {
-        if (round)
-            ADD(AL, 0, u, u, imm(1<<(adjust-1)));
-        MOV(AL, 0, u, reg_imm(u, LSR, adjust));
-    }
-    MLA(AL, 0, d, pixel, u, d);
-
-    // RT -> U*(1-V)            
-    CONTEXT_LOAD(offset, generated_vars.rt);
-    LDRH(AL, pixel, txPtr.reg, reg_pre(offset));
-    SUB(AL, 0, u, k, u);
-    ORR(AL, 0, pixel, pixel, reg_imm(pixel, LSL, shift));
-    build_and_immediate(pixel, pixel, mask, 32);
-    MLA(AL, 0, texel.reg, pixel, u, d);
-}
-
-void GGLAssembler::filter24(
-        const fragment_parts_t& /*parts*/,
-        pixel_t& texel, const texture_unit_t& /*tmu*/,
-        int /*U*/, int /*V*/, pointer_t& txPtr,
-        int /*FRAC_BITS*/)
-{
-    // not supported yet (currently disabled)
-    load(txPtr, texel, 0);
-}
-
-void GGLAssembler::filter32(
-        const fragment_parts_t& /*parts*/,
-        pixel_t& texel, const texture_unit_t& /*tmu*/,
-        int U, int V, pointer_t& txPtr,
-        int FRAC_BITS)
-{
-    const int adjust = FRAC_BITS*2 - 8;
-    const int round  = 0;
-
-    // ------------------------
-    // about ~38 cycles / pixel
-    Scratch scratches(registerFile());
-    
-    int pixel= scratches.obtain();
-    int dh   = scratches.obtain();
-    int u    = scratches.obtain();
-    int k    = scratches.obtain();
-
-    int temp = scratches.obtain();
-    int dl   = scratches.obtain();
-    int mask = scratches.obtain();
-
-    MOV(AL, 0, mask, imm(0xFF));
-    ORR(AL, 0, mask, mask, imm(0xFF0000));
-
-    // RB -> U * V
-    int offset = pixel;
-    CONTEXT_LOAD(offset, generated_vars.rt);
-    CONTEXT_LOAD(u, generated_vars.lb);
-    ADD(AL, 0, offset, offset, u);
-
-    LDR(AL, pixel, txPtr.reg, reg_scale_pre(offset));
-    SMULBB(AL, u, U, V);
-    AND(AL, 0, temp, mask, pixel);
-    if (adjust) {
-        if (round)
-            ADD(AL, 0, u, u, imm(1<<(adjust-1)));
-        MOV(AL, 0, u, reg_imm(u, LSR, adjust));
-    }
-    MUL(AL, 0, dh, temp, u);
-    AND(AL, 0, temp, mask, reg_imm(pixel, LSR, 8));
-    MUL(AL, 0, dl, temp, u);
-    RSB(AL, 0, k, u, imm(0x100));
-
-    // LB -> (1-U) * V
-    CONTEXT_LOAD(offset, generated_vars.lb);
-    RSB(AL, 0, U, U, imm(1<<FRAC_BITS));
-    LDR(AL, pixel, txPtr.reg, reg_scale_pre(offset));
-    SMULBB(AL, u, U, V);
-    AND(AL, 0, temp, mask, pixel);
-    if (adjust) {
-        if (round)
-            ADD(AL, 0, u, u, imm(1<<(adjust-1)));
-        MOV(AL, 0, u, reg_imm(u, LSR, adjust));
-    }
-    MLA(AL, 0, dh, temp, u, dh);    
-    AND(AL, 0, temp, mask, reg_imm(pixel, LSR, 8));
-    MLA(AL, 0, dl, temp, u, dl);
-    SUB(AL, 0, k, k, u);
-
-    // LT -> (1-U)*(1-V)
-    RSB(AL, 0, V, V, imm(1<<FRAC_BITS));
-    LDR(AL, pixel, txPtr.reg);
-    SMULBB(AL, u, U, V);
-    AND(AL, 0, temp, mask, pixel);
-    if (adjust) {
-        if (round)
-            ADD(AL, 0, u, u, imm(1<<(adjust-1)));
-        MOV(AL, 0, u, reg_imm(u, LSR, adjust));
-    }
-    MLA(AL, 0, dh, temp, u, dh);    
-    AND(AL, 0, temp, mask, reg_imm(pixel, LSR, 8));
-    MLA(AL, 0, dl, temp, u, dl);
-
-    // RT -> U*(1-V)            
-    CONTEXT_LOAD(offset, generated_vars.rt);
-    LDR(AL, pixel, txPtr.reg, reg_scale_pre(offset));
-    SUB(AL, 0, u, k, u);
-    AND(AL, 0, temp, mask, pixel);
-    MLA(AL, 0, dh, temp, u, dh);    
-    AND(AL, 0, temp, mask, reg_imm(pixel, LSR, 8));
-    MLA(AL, 0, dl, temp, u, dl);
-
-    AND(AL, 0, dh, mask, reg_imm(dh, LSR, 8));
-    AND(AL, 0, dl, dl, reg_imm(mask, LSL, 8));
-    ORR(AL, 0, texel.reg, dh, dl);
-}
-
-void GGLAssembler::build_texture_environment(
-        component_t& fragment,
-        const fragment_parts_t& parts,
-        int component,
-        Scratch& regs)
-{
-    const uint32_t component_mask = 1<<component;
-    const bool multiTexture = mTextureMachine.activeUnits > 1;
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
-        texture_unit_t& tmu = mTextureMachine.tmu[i];
-
-        if (tmu.mask & component_mask) {
-            // replace or modulate with this texture
-            if ((tmu.replaced & component_mask) == 0) {
-                // not replaced by a later tmu...
-
-                Scratch scratches(registerFile());
-                pixel_t texel(parts.texel[i]);
-
-                if (multiTexture && 
-                    tmu.swrap == GGL_NEEDS_WRAP_11 &&
-                    tmu.twrap == GGL_NEEDS_WRAP_11)
-                {
-                    texel.reg = scratches.obtain();
-                    texel.flags |= CORRUPTIBLE;
-                    comment("fetch texel (multitexture 1:1)");
-                    load(parts.coords[i].ptr, texel, WRITE_BACK);
-                 }
-
-                component_t incoming(fragment);
-                modify(fragment, regs);
-                
-                switch (tmu.env) {
-                case GGL_REPLACE:
-                    extract(fragment, texel, component);
-                    break;
-                case GGL_MODULATE:
-                    modulate(fragment, incoming, texel, component);
-                    break;
-                case GGL_DECAL:
-                    decal(fragment, incoming, texel, component);
-                    break;
-                case GGL_BLEND:
-                    blend(fragment, incoming, texel, component, i);
-                    break;
-                case GGL_ADD:
-                    add(fragment, incoming, texel, component);
-                    break;
-                }
-            }
-        }
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::wrapping(
-            int d,
-            int coord, int size,
-            int tx_wrap, int tx_linear)
-{
-    // notes:
-    // if tx_linear is set, we need 4 extra bits of precision on the result
-    // SMULL/UMULL is 3 cycles
-    Scratch scratches(registerFile());
-    int c = coord;
-    if (tx_wrap == GGL_NEEDS_WRAP_REPEAT) {
-        // UMULL takes 4 cycles (interlocked), and we can get away with
-        // 2 cycles using SMULWB, but we're loosing 16 bits of precision
-        // out of 32 (this is not a problem because the iterator keeps
-        // its full precision)
-        // UMULL(AL, 0, size, d, c, size);
-        // note: we can't use SMULTB because it's signed.
-        MOV(AL, 0, d, reg_imm(c, LSR, 16-tx_linear));
-        SMULWB(AL, d, d, size);
-    } else if (tx_wrap == GGL_NEEDS_WRAP_CLAMP_TO_EDGE) {
-        if (tx_linear) {
-            // 1 cycle
-            MOV(AL, 0, d, reg_imm(coord, ASR, 16-tx_linear));
-        } else {
-            // 4 cycles (common case)
-            MOV(AL, 0, d, reg_imm(coord, ASR, 16));
-            BIC(AL, 0, d, d, reg_imm(d, ASR, 31));
-            CMP(AL, d, size);
-            SUB(GE, 0, d, size, imm(1));
-        }
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-void GGLAssembler::modulate(
-        component_t& dest, 
-        const component_t& incoming,
-        const pixel_t& incomingTexel, int component)
-{
-    Scratch locals(registerFile());
-    integer_t texel(locals.obtain(), 32, CORRUPTIBLE);            
-    extract(texel, incomingTexel, component);
-
-    const int Nt = texel.size();
-        // Nt should always be less than 10 bits because it comes
-        // from the TMU.
-
-    int Ni = incoming.size();
-        // Ni could be big because it comes from previous MODULATEs
-
-    if (Nt == 1) {
-        // texel acts as a bit-mask
-        // dest = incoming & ((texel << incoming.h)-texel)
-        RSB(AL, 0, dest.reg, texel.reg, reg_imm(texel.reg, LSL, incoming.h));
-        AND(AL, 0, dest.reg, dest.reg, incoming.reg);
-        dest.l = incoming.l;
-        dest.h = incoming.h;
-        dest.flags |= (incoming.flags & CLEAR_LO);
-    } else if (Ni == 1) {
-        MOV(AL, 0, dest.reg, reg_imm(incoming.reg, LSL, 31-incoming.h));
-        AND(AL, 0, dest.reg, texel.reg, reg_imm(dest.reg, ASR, 31));
-        dest.l = 0;
-        dest.h = Nt;
-    } else {
-        int inReg = incoming.reg;
-        int shift = incoming.l;
-        if ((Nt + Ni) > 32) {
-            // we will overflow, reduce the precision of Ni to 8 bits
-            // (Note Nt cannot be more than 10 bits which happens with 
-            // 565 textures and GGL_LINEAR)
-            shift += Ni-8;
-            Ni = 8;
-        }
-
-        // modulate by the component with the lowest precision
-        if (Nt >= Ni) {
-            if (shift) {
-                // XXX: we should be able to avoid this shift
-                // when shift==16 && Nt<16 && Ni<16, in which
-                // we could use SMULBT below.
-                MOV(AL, 0, dest.reg, reg_imm(inReg, LSR, shift));
-                inReg = dest.reg;
-                shift = 0;
-            }
-            // operation:           (Cf*Ct)/((1<<Ni)-1)
-            // approximated with:   Cf*(Ct + Ct>>(Ni-1))>>Ni
-            // this operation doesn't change texel's size
-            ADD(AL, 0, dest.reg, inReg, reg_imm(inReg, LSR, Ni-1));
-            if (Nt<16 && Ni<16) SMULBB(AL, dest.reg, texel.reg, dest.reg);
-            else                MUL(AL, 0, dest.reg, texel.reg, dest.reg);
-            dest.l = Ni;
-            dest.h = Nt + Ni;            
-        } else {
-            if (shift && (shift != 16)) {
-                // if shift==16, we can use 16-bits mul instructions later
-                MOV(AL, 0, dest.reg, reg_imm(inReg, LSR, shift));
-                inReg = dest.reg;
-                shift = 0;
-            }
-            // operation:           (Cf*Ct)/((1<<Nt)-1)
-            // approximated with:   Ct*(Cf + Cf>>(Nt-1))>>Nt
-            // this operation doesn't change incoming's size
-            Scratch scratches(registerFile());
-            int t = (texel.flags & CORRUPTIBLE) ? texel.reg : dest.reg;
-            if (t == inReg)
-                t = scratches.obtain();
-            ADD(AL, 0, t, texel.reg, reg_imm(texel.reg, LSR, Nt-1));
-            if (Nt<16 && Ni<16) {
-                if (shift==16)  SMULBT(AL, dest.reg, t, inReg);
-                else            SMULBB(AL, dest.reg, t, inReg);
-            } else              MUL(AL, 0, dest.reg, t, inReg);
-            dest.l = Nt;
-            dest.h = Nt + Ni;
-        }
-
-        // low bits are not valid
-        dest.flags |= CLEAR_LO;
-
-        // no need to keep more than 8 bits/component
-        if (dest.size() > 8)
-            dest.l = dest.h-8;
-    }
-}
-
-void GGLAssembler::decal(
-        component_t& dest, 
-        const component_t& incoming,
-        const pixel_t& incomingTexel, int component)
-{
-    // RGBA:
-    // Cv = Cf*(1 - At) + Ct*At = Cf + (Ct - Cf)*At
-    // Av = Af
-    Scratch locals(registerFile());
-    integer_t texel(locals.obtain(), 32, CORRUPTIBLE);            
-    integer_t factor(locals.obtain(), 32, CORRUPTIBLE);
-    extract(texel, incomingTexel, component);
-    extract(factor, incomingTexel, GGLFormat::ALPHA);
-
-    // no need to keep more than 8-bits for decal 
-    int Ni = incoming.size();
-    int shift = incoming.l;
-    if (Ni > 8) {
-        shift += Ni-8;
-        Ni = 8;
-    }
-    integer_t incomingNorm(incoming.reg, Ni, incoming.flags);
-    if (shift) {
-        MOV(AL, 0, dest.reg, reg_imm(incomingNorm.reg, LSR, shift));
-        incomingNorm.reg = dest.reg;
-        incomingNorm.flags |= CORRUPTIBLE;
-    }
-    ADD(AL, 0, factor.reg, factor.reg, reg_imm(factor.reg, LSR, factor.s-1));
-    build_blendOneMinusFF(dest, factor, incomingNorm, texel);
-}
-
-void GGLAssembler::blend(
-        component_t& dest, 
-        const component_t& incoming,
-        const pixel_t& incomingTexel, int component, int tmu)
-{
-    // RGBA:
-    // Cv = (1 - Ct)*Cf + Ct*Cc = Cf + (Cc - Cf)*Ct
-    // Av = At*Af
-
-    if (component == GGLFormat::ALPHA) {
-        modulate(dest, incoming, incomingTexel, component);
-        return;
-    }
-    
-    Scratch locals(registerFile());
-    integer_t color(locals.obtain(), 8, CORRUPTIBLE);            
-    integer_t factor(locals.obtain(), 32, CORRUPTIBLE);
-    LDRB(AL, color.reg, mBuilderContext.Rctx,
-            immed12_pre(GGL_OFFSETOF(state.texture[tmu].env_color[component])));
-    extract(factor, incomingTexel, component);
-
-    // no need to keep more than 8-bits for blend 
-    int Ni = incoming.size();
-    int shift = incoming.l;
-    if (Ni > 8) {
-        shift += Ni-8;
-        Ni = 8;
-    }
-    integer_t incomingNorm(incoming.reg, Ni, incoming.flags);
-    if (shift) {
-        MOV(AL, 0, dest.reg, reg_imm(incomingNorm.reg, LSR, shift));
-        incomingNorm.reg = dest.reg;
-        incomingNorm.flags |= CORRUPTIBLE;
-    }
-    ADD(AL, 0, factor.reg, factor.reg, reg_imm(factor.reg, LSR, factor.s-1));
-    build_blendOneMinusFF(dest, factor, incomingNorm, color);
-}
-
-void GGLAssembler::add(
-        component_t& dest, 
-        const component_t& incoming,
-        const pixel_t& incomingTexel, int component)
-{
-    // RGBA:
-    // Cv = Cf + Ct;
-    Scratch locals(registerFile());
-    
-    component_t incomingTemp(incoming);
-
-    // use "dest" as a temporary for extracting the texel, unless "dest"
-    // overlaps "incoming".
-    integer_t texel(dest.reg, 32, CORRUPTIBLE);
-    if (dest.reg == incomingTemp.reg)
-        texel.reg = locals.obtain();
-    extract(texel, incomingTexel, component);
-
-    if (texel.s < incomingTemp.size()) {
-        expand(texel, texel, incomingTemp.size());
-    } else if (texel.s > incomingTemp.size()) {
-        if (incomingTemp.flags & CORRUPTIBLE) {
-            expand(incomingTemp, incomingTemp, texel.s);
-        } else {
-            incomingTemp.reg = locals.obtain();
-            expand(incomingTemp, incoming, texel.s);
-        }
-    }
-
-    if (incomingTemp.l) {
-        ADD(AL, 0, dest.reg, texel.reg,
-                reg_imm(incomingTemp.reg, LSR, incomingTemp.l));
-    } else {
-        ADD(AL, 0, dest.reg, texel.reg, incomingTemp.reg);
-    }
-    dest.l = 0;
-    dest.h = texel.size();
-    component_sat(dest);
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
-
diff --git a/libpixelflinger/codeflinger/tinyutils/smartpointer.h b/libpixelflinger/codeflinger/tinyutils/smartpointer.h
deleted file mode 100644
index 23a5f7e..0000000
--- a/libpixelflinger/codeflinger/tinyutils/smartpointer.h
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * Copyright 2005 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_PIXELFLINGER_SMART_POINTER_H
-#define ANDROID_PIXELFLINGER_SMART_POINTER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-#include <stdlib.h>
-
-// ---------------------------------------------------------------------------
-namespace android {
-namespace tinyutils {
-
-// ---------------------------------------------------------------------------
-
-#define COMPARE(_op_)                                           \
-inline bool operator _op_ (const sp<T>& o) const {              \
-    return m_ptr _op_ o.m_ptr;                                  \
-}                                                               \
-inline bool operator _op_ (const T* o) const {                  \
-    return m_ptr _op_ o;                                        \
-}                                                               \
-template<typename U>                                            \
-inline bool operator _op_ (const sp<U>& o) const {              \
-    return m_ptr _op_ o.m_ptr;                                  \
-}                                                               \
-template<typename U>                                            \
-inline bool operator _op_ (const U* o) const {                  \
-    return m_ptr _op_ o;                                        \
-}
-
-// ---------------------------------------------------------------------------
-
-template <typename T>
-class sp
-{
-public:
-    inline sp() : m_ptr(0) { }
-
-    sp(T* other);  // NOLINT, implicit
-    sp(const sp<T>& other);
-    template<typename U> sp(U* other);  // NOLINT, implicit
-    template<typename U> sp(const sp<U>& other);  // NOLINT, implicit
-
-    ~sp();
-    
-    // Assignment
-
-    sp& operator = (T* other);
-    sp& operator = (const sp<T>& other);
-    
-    template<typename U> sp& operator = (const sp<U>& other);
-    template<typename U> sp& operator = (U* other);
-    
-    // Reset
-    void clear();
-    
-    // Accessors
-
-    inline  T&      operator* () const  { return *m_ptr; }
-    inline  T*      operator-> () const { return m_ptr;  }
-    inline  T*      get() const         { return m_ptr; }
-
-    // Operators
-        
-    COMPARE(==)
-    COMPARE(!=)
-    COMPARE(>)
-    COMPARE(<)
-    COMPARE(<=)
-    COMPARE(>=)
-
-private:    
-    template<typename Y> friend class sp;
-
-    T*              m_ptr;
-};
-
-// ---------------------------------------------------------------------------
-// No user serviceable parts below here.
-
-template<typename T>
-sp<T>::sp(T* other)
-    : m_ptr(other)
-{
-    if (other) other->incStrong(this);
-}
-
-template<typename T>
-sp<T>::sp(const sp<T>& other)
-    : m_ptr(other.m_ptr)
-{
-    if (m_ptr) m_ptr->incStrong(this);
-}
-
-template<typename T> template<typename U>
-sp<T>::sp(U* other) : m_ptr(other)
-{
-    if (other) other->incStrong(this);
-}
-
-template<typename T> template<typename U>
-sp<T>::sp(const sp<U>& other)
-    : m_ptr(other.m_ptr)
-{
-    if (m_ptr) m_ptr->incStrong(this);
-}
-
-template<typename T>
-sp<T>::~sp()
-{
-    if (m_ptr) m_ptr->decStrong(this);
-}
-
-template<typename T>
-sp<T>& sp<T>::operator = (const sp<T>& other) {
-    if (other.m_ptr) other.m_ptr->incStrong(this);
-    if (m_ptr) m_ptr->decStrong(this);
-    m_ptr = other.m_ptr;
-    return *this;
-}
-
-template<typename T>
-sp<T>& sp<T>::operator = (T* other)
-{
-    if (other) other->incStrong(this);
-    if (m_ptr) m_ptr->decStrong(this);
-    m_ptr = other;
-    return *this;
-}
-
-template<typename T> template<typename U>
-sp<T>& sp<T>::operator = (const sp<U>& other)
-{
-    if (other.m_ptr) other.m_ptr->incStrong(this);
-    if (m_ptr) m_ptr->decStrong(this);
-    m_ptr = other.m_ptr;
-    return *this;
-}
-
-template<typename T> template<typename U>
-sp<T>& sp<T>::operator = (U* other)
-{
-    if (other) other->incStrong(this);
-    if (m_ptr) m_ptr->decStrong(this);
-    m_ptr = other;
-    return *this;
-}
-
-template<typename T>
-void sp<T>::clear()
-{
-    if (m_ptr) {
-        m_ptr->decStrong(this);
-        m_ptr = 0;
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-} // namespace tinyutils
-} // namespace android
-
-// ---------------------------------------------------------------------------
-
-#endif // ANDROID_PIXELFLINGER_SMART_POINTER_H
diff --git a/libpixelflinger/col32cb16blend.S b/libpixelflinger/col32cb16blend.S
deleted file mode 100644
index 39f94e1..0000000
--- a/libpixelflinger/col32cb16blend.S
+++ /dev/null
@@ -1,77 +0,0 @@
-/* libs/pixelflinger/col32cb16blend.S
- *
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-    .text
-    .balign 4
-
-    .global scanline_col32cb16blend_arm
-
-//
-// This function alpha blends a fixed color into a destination scanline, using
-// the formula:
-//
-//     d = s + (((a + (a >> 7)) * d) >> 8)
-//
-// where d is the destination pixel,
-//       s is the source color,
-//       a is the alpha channel of the source color.
-//
-
-// r0 = destination buffer pointer
-// r1 = color value
-// r2 = count
-
-
-scanline_col32cb16blend_arm:
-    push        {r4-r10, lr}                    // stack ARM regs
-
-    mov         r5, r1, lsr #24                 // shift down alpha
-    mov         r9, #0xff                       // create mask
-    add         r5, r5, r5, lsr #7              // add in top bit
-    rsb         r5, r5, #256                    // invert alpha
-    and         r10, r1, #0xff                  // extract red
-    and         r12, r9, r1, lsr #8             // extract green
-    and         r4, r9, r1, lsr #16             // extract blue
-    mov         r10, r10, lsl #5                // prescale red
-    mov         r12, r12, lsl #6                // prescale green
-    mov         r4, r4, lsl #5                  // prescale blue
-    mov         r9, r9, lsr #2                  // create dest green mask
-
-1:
-    ldrh        r8, [r0]                        // load dest pixel
-    subs        r2, r2, #1                      // decrement loop counter
-    mov         r6, r8, lsr #11                 // extract dest red
-    and         r7, r9, r8, lsr #5              // extract dest green
-    and         r8, r8, #0x1f                   // extract dest blue
-
-    smlabb      r6, r6, r5, r10                 // dest red * alpha + src red
-    smlabb      r7, r7, r5, r12                 // dest green * alpha + src green
-    smlabb      r8, r8, r5, r4                  // dest blue * alpha + src blue
-
-    mov         r6, r6, lsr #8                  // shift down red
-    mov         r7, r7, lsr #8                  // shift down green
-    mov         r6, r6, lsl #11                 // shift red into 565
-    orr         r6, r7, lsl #5                  // shift green into 565
-    orr         r6, r8, lsr #8                  // shift blue into 565
-
-    strh        r6, [r0], #2                    // store pixel to dest, update ptr
-    bne         1b                              // if count != 0, loop
-
-    pop         {r4-r10, pc}                    // return
-
-
-
diff --git a/libpixelflinger/col32cb16blend_neon.S b/libpixelflinger/col32cb16blend_neon.S
deleted file mode 100644
index 7ad34b0..0000000
--- a/libpixelflinger/col32cb16blend_neon.S
+++ /dev/null
@@ -1,153 +0,0 @@
-/* libs/pixelflinger/col32cb16blend_neon.S
- *
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-
-    .text
-    .balign 4
-
-    .global scanline_col32cb16blend_neon
-
-//
-// This function alpha blends a fixed color into a destination scanline, using
-// the formula:
-//
-//     d = s + (((a + (a >> 7)) * d) >> 8)
-//
-// where d is the destination pixel,
-//       s is the source color,
-//       a is the alpha channel of the source color.
-//
-// The NEON implementation processes 16 pixels per iteration. The remaining 0 - 15
-// pixels are processed in ARM code.
-//
-
-// r0 = destination buffer pointer
-// r1 = color pointer
-// r2 = count
-
-
-scanline_col32cb16blend_neon:
-    push        {r4-r11, lr}                    // stack ARM regs
-
-    vmov.u16    q15, #256                       // create alpha constant
-    movs        r3, r2, lsr #4                  // calc. sixteens iterations
-    vmov.u16    q14, #0x1f                      // create blue mask
-
-    beq         2f                              // if r3 == 0, branch to singles
-
-    vld4.8      {d0[], d2[], d4[], d6[]}, [r1]  // load color into four registers
-                                                //  split and duplicate them, such that
-                                                //  d0 = 8 equal red values
-                                                //  d2 = 8 equal green values
-                                                //  d4 = 8 equal blue values
-                                                //  d6 = 8 equal alpha values
-    vshll.u8    q0, d0, #5                      // shift up red and widen
-    vshll.u8    q1, d2, #6                      // shift up green and widen
-    vshll.u8    q2, d4, #5                      // shift up blue and widen
-
-    vshr.u8     d7, d6, #7                      // extract top bit of alpha
-    vaddl.u8    q3, d6, d7                      // add top bit into alpha
-    vsub.u16    q3, q15, q3                     // invert alpha
-
-1:
-    // This loop processes 16 pixels per iteration. In the comments, references to
-    // the first eight pixels are suffixed with "0" (red0, green0, blue0), 
-    // the second eight are suffixed "1".
-                                                // q8  = dst red0
-                                                // q9  = dst green0
-                                                // q10 = dst blue0
-                                                // q13 = dst red1
-                                                // q12 = dst green1
-                                                // q11 = dst blue1
-
-    vld1.16     {d20, d21, d22, d23}, [r0]      // load 16 dest pixels
-    vshr.u16    q8, q10, #11                    // shift dst red0 to low 5 bits
-    pld         [r0, #63]                       // preload next dest pixels
-    vshl.u16    q9, q10, #5                     // shift dst green0 to top 6 bits
-    vand        q10, q10, q14                   // extract dst blue0
-    vshr.u16    q9, q9, #10                     // shift dst green0 to low 6 bits
-    vmul.u16    q8, q8, q3                      // multiply dst red0 by src alpha
-    vshl.u16    q12, q11, #5                    // shift dst green1 to top 6 bits
-    vmul.u16    q9, q9, q3                      // multiply dst green0 by src alpha
-    vshr.u16    q13, q11, #11                   // shift dst red1 to low 5 bits
-    vmul.u16    q10, q10, q3                    // multiply dst blue0 by src alpha
-    vshr.u16    q12, q12, #10                   // shift dst green1 to low 6 bits
-    vand        q11, q11, q14                   // extract dst blue1
-    vadd.u16    q8, q8, q0                      // add src red to dst red0
-    vmul.u16    q13, q13, q3                    // multiply dst red1 by src alpha
-    vadd.u16    q9, q9, q1                      // add src green to dst green0 
-    vmul.u16    q12, q12, q3                    // multiply dst green1 by src alpha
-    vadd.u16    q10, q10, q2                    // add src blue to dst blue0
-    vmul.u16    q11, q11, q3                    // multiply dst blue1 by src alpha
-    vshr.u16    q8, q8, #8                      // shift down red0
-    vadd.u16    q13, q13, q0                    // add src red to dst red1
-    vshr.u16    q9, q9, #8                      // shift down green0
-    vadd.u16    q12, q12, q1                    // add src green to dst green1
-    vshr.u16    q10, q10, #8                    // shift down blue0
-    vadd.u16    q11, q11, q2                    // add src blue to dst blue1
-    vsli.u16    q10, q9, #5                     // shift & insert green0 into blue0
-    vshr.u16    q13, q13, #8                    // shift down red1
-    vsli.u16    q10, q8, #11                    // shift & insert red0 into blue0    
-    vshr.u16    q12, q12, #8                    // shift down green1
-    vshr.u16    q11, q11, #8                    // shift down blue1
-    subs        r3, r3, #1                      // decrement loop counter
-    vsli.u16    q11, q12, #5                    // shift & insert green1 into blue1
-    vsli.u16    q11, q13, #11                   // shift & insert red1 into blue1
-
-    vst1.16     {d20, d21, d22, d23}, [r0]!     // write 16 pixels back to dst
-    bne         1b                              // if count != 0, loop
-
-2:
-    ands        r3, r2, #15                     // calc. single iterations 
-    beq         4f                              // if r3 == 0, exit
-
-    ldr         r4, [r1]                        // load source color
-    mov         r5, r4, lsr #24                 // shift down alpha
-    add         r5, r5, r5, lsr #7              // add in top bit
-    rsb         r5, r5, #256                    // invert alpha
-    and         r11, r4, #0xff                  // extract red
-    ubfx        r12, r4, #8, #8                 // extract green
-    ubfx        r4, r4, #16, #8                 // extract blue
-    mov         r11, r11, lsl #5                // prescale red
-    mov         r12, r12, lsl #6                // prescale green
-    mov         r4, r4, lsl #5                  // prescale blue
-
-3:
-    ldrh        r8, [r0]                        // load dest pixel
-    subs        r3, r3, #1                      // decrement loop counter
-    mov         r6, r8, lsr #11                 // extract dest red
-    ubfx        r7, r8, #5, #6                  // extract dest green
-    and         r8, r8, #0x1f                   // extract dest blue
-
-    smlabb      r6, r6, r5, r11                 // dest red * alpha + src red
-    smlabb      r7, r7, r5, r12                 // dest green * alpha + src green
-    smlabb      r8, r8, r5, r4                  // dest blue * alpha + src blue
-
-    mov         r6, r6, lsr #8                  // shift down red
-    mov         r7, r7, lsr #8                  // shift down green
-    mov         r6, r6, lsl #11                 // shift red into 565
-    orr         r6, r7, lsl #5                  // shift green into 565
-    orr         r6, r8, lsr #8                  // shift blue into 565
-
-    strh        r6, [r0], #2                    // store pixel to dest, update ptr
-    bne         3b                              // if count != 0, loop
-4:
-
-    pop         {r4-r11, pc}                    // return
-
-
-
diff --git a/libpixelflinger/fixed.cpp b/libpixelflinger/fixed.cpp
deleted file mode 100644
index de6b479..0000000
--- a/libpixelflinger/fixed.cpp
+++ /dev/null
@@ -1,329 +0,0 @@
-/* libs/pixelflinger/fixed.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include <stdio.h>
-
-#include <private/pixelflinger/ggl_context.h>
-#include <private/pixelflinger/ggl_fixed.h>
-
-
-// ------------------------------------------------------------------------
-
-int32_t gglRecipQNormalized(int32_t x, int* exponent)
-{
-    const int32_t s = x>>31;
-    uint32_t a = s ? -x : x;
-
-    // the result will overflow, so just set it to the biggest/inf value
-    if (ggl_unlikely(a <= 2LU)) {
-        *exponent = 0;
-        return s ? FIXED_MIN : FIXED_MAX;
-    }
-
-    // Newton-Raphson iteration:
-    // x = r*(2 - a*r)
-
-    const int32_t lz = gglClz(a);
-    a <<= lz;  // 0.32
-    uint32_t r = a;
-    // note: if a == 0x80000000, this means x was a power-of-2, in this
-    // case we don't need to compute anything. We get the reciprocal for
-    // (almost) free.
-    if (a != 0x80000000) {
-        r = (0x2E800 << (30-16)) - (r>>(2-1)); // 2.30, r = 2.90625 - 2*a
-        // 0.32 + 2.30 = 2.62 -> 2.30
-        // 2.30 + 2.30 = 4.60 -> 2.30
-        r = (((2LU<<30) - uint32_t((uint64_t(a)*r) >> 32)) * uint64_t(r)) >> 30;
-        r = (((2LU<<30) - uint32_t((uint64_t(a)*r) >> 32)) * uint64_t(r)) >> 30;
-    }
-
-    // shift right 1-bit to make room for the sign bit
-    *exponent = 30-lz-1;
-    r >>= 1;
-    return s ? -r : r;
-}
-
-int32_t gglRecipQ(GGLfixed x, int q)
-{
-    int shift;
-    x = gglRecipQNormalized(x, &shift);
-    shift += 16-q;
-    if (shift > 0)
-        x += 1L << (shift-1);   // rounding
-    x >>= shift;
-    return x;
-}    
-
-// ------------------------------------------------------------------------
-
-static const GGLfixed ggl_sqrt_reciproc_approx_tab[8] = {
-    // 1/sqrt(x) with x = 1-N/16, N=[8...1]
-    0x16A09, 0x15555, 0x143D1, 0x134BF, 0x1279A, 0x11C01, 0x111AC, 0x10865
-};
-
-GGLfixed gglSqrtRecipx(GGLfixed x)
-{
-    if (x == 0)         return FIXED_MAX;
-    if (x == FIXED_ONE) return x;
-    const GGLfixed a = x;
-    const int32_t lz = gglClz(x);
-    x = ggl_sqrt_reciproc_approx_tab[(a>>(28-lz))&0x7];
-    const int32_t exp = lz - 16;
-    if (exp <= 0)   x >>= -exp>>1;
-    else            x <<= (exp>>1) + (exp & 1);        
-    if (exp & 1) {
-        x = gglMulx(x, ggl_sqrt_reciproc_approx_tab[0])>>1;
-    }
-    // 2 Newton-Raphson iterations: x = x/2*(3-(a*x)*x)
-    x = gglMulx((x>>1),(0x30000 - gglMulx(gglMulx(a,x),x)));
-    x = gglMulx((x>>1),(0x30000 - gglMulx(gglMulx(a,x),x)));
-    return x;
-}
-
-GGLfixed gglSqrtx(GGLfixed a)
-{
-    // Compute a full precision square-root (24 bits accuracy)
-    GGLfixed r = 0;
-    GGLfixed bit = 0x800000;
-    int32_t bshift = 15;
-    do {
-        GGLfixed temp = bit + (r<<1);
-        if (bshift >= 8)    temp <<= (bshift-8);
-        else                temp >>= (8-bshift);
-        if (a >= temp) {
-            r += bit;
-            a -= temp;
-        }
-        bshift--;
-    } while (bit>>=1);
-    return r;
-}
-
-// ------------------------------------------------------------------------
-
-static const GGLfixed ggl_log_approx_tab[] = {
-    // -ln(x)/ln(2) with x = N/16, N=[8...16]
-    0xFFFF, 0xd47f, 0xad96, 0x8a62, 0x6a3f, 0x4caf, 0x3151, 0x17d6, 0x0000
-};
-
-static const GGLfixed ggl_alog_approx_tab[] = { // domain [0 - 1.0]
-	0xffff, 0xeac0, 0xd744, 0xc567, 0xb504, 0xa5fe, 0x9837, 0x8b95, 0x8000
-};
-
-GGLfixed gglPowx(GGLfixed x, GGLfixed y)
-{
-    // prerequisite: 0 <= x <= 1, and y >=0
-
-    // pow(x,y) = 2^(y*log2(x))
-    // =  2^(y*log2(x*(2^exp)*(2^-exp))))
-    // =  2^(y*(log2(X)-exp))
-    // =  2^(log2(X)*y - y*exp)
-    // =  2^( - (-log2(X)*y + y*exp) )
-    
-    int32_t exp = gglClz(x) - 16;
-    GGLfixed f = x << exp;
-    x = (f & 0x0FFF)<<4;
-    f = (f >> 12) & 0x7;
-    GGLfixed p = gglMulAddx(
-            ggl_log_approx_tab[f+1] - ggl_log_approx_tab[f], x,
-            ggl_log_approx_tab[f]);
-    p = gglMulAddx(p, y, y*exp);
-    exp = gglFixedToIntFloor(p);
-    if (exp < 31) {
-        p = gglFracx(p);
-        x = (p & 0x1FFF)<<3;
-        p >>= 13;    
-        p = gglMulAddx(
-                ggl_alog_approx_tab[p+1] - ggl_alog_approx_tab[p], x,
-                ggl_alog_approx_tab[p]);
-        p >>= exp;
-    } else {
-        p = 0;
-    }
-    return p;
-        // ( powf((a*65536.0f), (b*65536.0f)) ) * 65536.0f;
-}
-
-// ------------------------------------------------------------------------
-
-int32_t gglDivQ(GGLfixed n, GGLfixed d, int32_t i)
-{
-    //int32_t r =int32_t((int64_t(n)<<i)/d);
-    const int32_t ds = n^d;
-    if (n<0) n = -n;
-    if (d<0) d = -d;
-    int nd = gglClz(d) - gglClz(n);
-    i += nd + 1;
-    if (nd > 0) d <<= nd;
-    else        n <<= -nd;
-    uint32_t q = 0;
-
-    int j = i & 7;
-    i >>= 3;
-
-    // gcc deals with the code below pretty well.
-    // we get 3.75 cycles per bit in the main loop
-    // and 8 cycles per bit in the termination loop
-    if (ggl_likely(i)) {
-        n -= d;
-        do {
-            q <<= 8;
-            if (n>=0)   q |= 128;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 64;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 32;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 16;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 8;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 4;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 2;
-            else        n += d;
-            n = n*2 - d;
-            if (n>=0)   q |= 1;
-            else        n += d;
-            
-            if (--i == 0)
-                goto finish;
-
-            n = n*2 - d;
-        } while(true);
-        do {
-            q <<= 1;
-            n = n*2 - d;
-            if (n>=0)   q |= 1;
-            else        n += d;
-        finish: ;
-        } while (j--);
-        return (ds<0) ? -q : q;
-    }
-
-    n -= d;
-    if (n>=0)   q |= 1;
-    else        n += d;
-    j--;
-    goto finish;
-}
-
-// ------------------------------------------------------------------------
-
-// assumes that the int32_t values of a, b, and c are all positive
-// use when both a and b are larger than c
-
-template <typename T>
-static inline void swap(T& a, T& b) {
-    T t(a);
-    a = b;
-    b = t;
-}
-
-static __attribute__((noinline))
-int32_t slow_muldiv(uint32_t a, uint32_t b, uint32_t c)
-{
-	// first we compute a*b as a 64-bit integer
-    // (GCC generates umull with the code below)
-    uint64_t ab = uint64_t(a)*b;
-    uint32_t hi = ab>>32;
-    uint32_t lo = ab;
-    uint32_t result;
-
-	// now perform the division
-	if (hi >= c) {
-	overflow:
-		result = 0x7fffffff;  // basic overflow
-	} else if (hi == 0) {
-		result = lo/c;  // note: c can't be 0
-		if ((result >> 31) != 0)  // result must fit in 31 bits
-			goto overflow;
-	} else {
-		uint32_t r = hi;
-		int bits = 31;
-	    result = 0;
-		do {
-			r = (r << 1) | (lo >> 31);
-			lo <<= 1;
-			result <<= 1;
-			if (r >= c) {
-				r -= c;
-				result |= 1;
-			}
-		} while (bits--);
-	}
-	return int32_t(result);
-}
-
-// assumes a >= 0 and c >= b >= 0
-static inline
-int32_t quick_muldiv(int32_t a, int32_t b, int32_t c)
-{
-    int32_t r = 0, q = 0, i;
-    int leading = gglClz(a);
-    i = 32 - leading;
-    a <<= leading;
-    do {
-        r <<= 1;
-        if (a < 0)
-            r += b;
-        a <<= 1;
-        q <<= 1;
-        if (r >= c) {
-            r -= c;
-            q++;
-        }
-        asm(""::); // gcc generates better code this way
-        if (r >= c) {
-            r -= c;
-            q++;
-        }
-    }
-    while (--i);
-    return q;
-}
-
-// this function computes a*b/c with 64-bit intermediate accuracy
-// overflows (e.g. division by 0) are handled and return INT_MAX
-
-int32_t gglMulDivi(int32_t a, int32_t b, int32_t c)
-{
-	int32_t result;
-	int32_t sign = a^b^c;
-
-	if (a < 0) a = -a;
-	if (b < 0) b = -b;
-	if (c < 0) c = -c;
-
-    if (a < b) {
-        swap(a, b);
-    }
-    
-	if (b <= c) result = quick_muldiv(a, b, c);
-	else        result = slow_muldiv((uint32_t)a, (uint32_t)b, (uint32_t)c);
-	
-	if (sign < 0)
-		result = -result;
-	  
-    return result;
-}
diff --git a/libpixelflinger/format.cpp b/libpixelflinger/format.cpp
deleted file mode 100644
index 6546e8c..0000000
--- a/libpixelflinger/format.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/* libs/pixelflinger/format.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include <stdio.h>
-#include <pixelflinger/format.h>
-
-namespace android {
-
-static GGLFormat const gPixelFormatInfos[] =
-{   //          Alpha    Red     Green   Blue
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  4, 32, {{32,24,   8, 0,  16, 8,  24,16 }}, GGL_RGBA },   // PIXEL_FORMAT_RGBA_8888
-    {  4, 24, {{ 0, 0,   8, 0,  16, 8,  24,16 }}, GGL_RGB  },   // PIXEL_FORMAT_RGBX_8888
-    {  3, 24, {{ 0, 0,   8, 0,  16, 8,  24,16 }}, GGL_RGB  },   // PIXEL_FORMAT_RGB_888
-    {  2, 16, {{ 0, 0,  16,11,  11, 5,   5, 0 }}, GGL_RGB  },   // PIXEL_FORMAT_RGB_565
-    {  4, 32, {{32,24,  24,16,  16, 8,   8, 0 }}, GGL_RGBA },   // PIXEL_FORMAT_BGRA_8888
-    {  2, 16, {{ 1, 0,  16,11,  11, 6,   6, 1 }}, GGL_RGBA },   // PIXEL_FORMAT_RGBA_5551
-    {  2, 16, {{ 4, 0,  16,12,  12, 8,   8, 4 }}, GGL_RGBA },   // PIXEL_FORMAT_RGBA_4444
-    {  1,  8, {{ 8, 0,   0, 0,   0, 0,   0, 0 }}, GGL_ALPHA},   // PIXEL_FORMAT_A8
-    {  1,  8, {{ 0, 0,   8, 0,   8, 0,   8, 0 }}, GGL_LUMINANCE},//PIXEL_FORMAT_L8
-    {  2, 16, {{16, 8,   8, 0,   8, 0,   8, 0 }}, GGL_LUMINANCE_ALPHA},// PIXEL_FORMAT_LA_88
-    {  1,  8, {{ 0, 0,   8, 5,   5, 2,   2, 0 }}, GGL_RGB  },   // PIXEL_FORMAT_RGB_332
-    
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    
-    {  2, 16, {{  0, 0, 16, 0,   0, 0,   0, 0 }}, GGL_DEPTH_COMPONENT},
-    {  1,  8, {{  8, 0,  0, 0,   0, 0,   0, 0 }}, GGL_STENCIL_INDEX  },
-    {  4, 24, {{  0, 0, 24, 0,   0, 0,   0, 0 }}, GGL_DEPTH_COMPONENT},
-    {  4,  8, {{ 32,24,  0, 0,   0, 0,   0, 0 }}, GGL_STENCIL_INDEX  },
-
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-    {  0,  0, {{ 0, 0,   0, 0,   0, 0,   0, 0 }},        0 },   // PIXEL_FORMAT_NONE
-
-};
-
-}; // namespace android
-
-
-const GGLFormat* gglGetPixelFormatTable(size_t* numEntries)
-{
-    if (numEntries) {
-        *numEntries = sizeof(android::gPixelFormatInfos)/sizeof(GGLFormat);
-    }
-    return android::gPixelFormatInfos;
-}
diff --git a/libpixelflinger/include/pixelflinger/format.h b/libpixelflinger/include/pixelflinger/format.h
deleted file mode 100644
index 82eeca4..0000000
--- a/libpixelflinger/include/pixelflinger/format.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) 2005 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_PIXELFLINGER_FORMAT_H
-#define ANDROID_PIXELFLINGER_FORMAT_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-enum GGLPixelFormat {
-    // these constants need to match those
-    // in graphics/PixelFormat.java, ui/PixelFormat.h, BlitHardware.h
-    GGL_PIXEL_FORMAT_UNKNOWN    =   0,
-    GGL_PIXEL_FORMAT_NONE       =   0,
-
-    GGL_PIXEL_FORMAT_RGBA_8888   =   1,  // 4x8-bit ARGB
-    GGL_PIXEL_FORMAT_RGBX_8888   =   2,  // 3x8-bit RGB stored in 32-bit chunks
-    GGL_PIXEL_FORMAT_RGB_888     =   3,  // 3x8-bit RGB
-    GGL_PIXEL_FORMAT_RGB_565     =   4,  // 16-bit RGB
-    GGL_PIXEL_FORMAT_BGRA_8888   =   5,  // 4x8-bit BGRA
-    GGL_PIXEL_FORMAT_RGBA_5551   =   6,  // 16-bit RGBA
-    GGL_PIXEL_FORMAT_RGBA_4444   =   7,  // 16-bit RGBA
-
-    GGL_PIXEL_FORMAT_A_8         =   8,  // 8-bit A
-    GGL_PIXEL_FORMAT_L_8         =   9,  // 8-bit L (R=G=B = L)
-    GGL_PIXEL_FORMAT_LA_88       = 0xA,  // 16-bit LA
-    GGL_PIXEL_FORMAT_RGB_332     = 0xB,  // 8-bit RGB (non paletted)
-
-    // reserved range. don't use.
-    GGL_PIXEL_FORMAT_RESERVED_10 = 0x10,
-    GGL_PIXEL_FORMAT_RESERVED_11 = 0x11,
-    GGL_PIXEL_FORMAT_RESERVED_12 = 0x12,
-    GGL_PIXEL_FORMAT_RESERVED_13 = 0x13,
-    GGL_PIXEL_FORMAT_RESERVED_14 = 0x14,
-    GGL_PIXEL_FORMAT_RESERVED_15 = 0x15,
-    GGL_PIXEL_FORMAT_RESERVED_16 = 0x16,
-    GGL_PIXEL_FORMAT_RESERVED_17 = 0x17,
-
-    // reserved/special formats
-    GGL_PIXEL_FORMAT_Z_16       =  0x18,
-    GGL_PIXEL_FORMAT_S_8        =  0x19,
-    GGL_PIXEL_FORMAT_SZ_24      =  0x1A,
-    GGL_PIXEL_FORMAT_SZ_8       =  0x1B,
-
-    // reserved range. don't use.
-    GGL_PIXEL_FORMAT_RESERVED_20 = 0x20,
-    GGL_PIXEL_FORMAT_RESERVED_21 = 0x21,
-};
-
-enum GGLFormatComponents {
-	GGL_STENCIL_INDEX		= 0x1901,
-	GGL_DEPTH_COMPONENT		= 0x1902,
-	GGL_ALPHA				= 0x1906,
-	GGL_RGB					= 0x1907,
-	GGL_RGBA				= 0x1908,
-	GGL_LUMINANCE			= 0x1909,
-	GGL_LUMINANCE_ALPHA		= 0x190A,
-};
-
-enum GGLFormatComponentIndex {
-    GGL_INDEX_ALPHA   = 0,
-    GGL_INDEX_RED     = 1,
-    GGL_INDEX_GREEN   = 2,
-    GGL_INDEX_BLUE    = 3,
-    GGL_INDEX_STENCIL = 0,
-    GGL_INDEX_DEPTH   = 1,
-    GGL_INDEX_Y       = 0,
-    GGL_INDEX_CB      = 1,
-    GGL_INDEX_CR      = 2,
-};
-
-typedef struct {
-#ifdef __cplusplus
-    enum {
-        ALPHA   = GGL_INDEX_ALPHA,
-        RED     = GGL_INDEX_RED,
-        GREEN   = GGL_INDEX_GREEN,
-        BLUE    = GGL_INDEX_BLUE,
-        STENCIL = GGL_INDEX_STENCIL,
-        DEPTH   = GGL_INDEX_DEPTH,
-        LUMA    = GGL_INDEX_Y,
-        CHROMAB = GGL_INDEX_CB,
-        CHROMAR = GGL_INDEX_CR,
-    };
-    inline uint32_t mask(int i) const {
-            return ((1<<(c[i].h-c[i].l))-1)<<c[i].l;
-    }
-    inline uint32_t bits(int i) const {
-            return c[i].h - c[i].l;
-    }
-#endif
-	uint8_t     size;	// bytes per pixel
-    uint8_t     bitsPerPixel;
-    union {    
-        struct {
-            uint8_t     ah;		// alpha high bit position + 1
-            uint8_t     al;		// alpha low bit position
-            uint8_t     rh;		// red high bit position + 1
-            uint8_t     rl;		// red low bit position
-            uint8_t     gh;		// green high bit position + 1
-            uint8_t     gl;		// green low bit position
-            uint8_t     bh;		// blue high bit position + 1
-            uint8_t     bl;		// blue low bit position
-        };
-        struct {
-            uint8_t h;
-            uint8_t l;
-        } __attribute__((__packed__)) c[4];        
-    } __attribute__((__packed__));
-	uint16_t    components;	// GGLFormatComponents
-} GGLFormat;
-
-
-#ifdef __cplusplus
-extern "C" const GGLFormat* gglGetPixelFormatTable(size_t* numEntries = 0);
-#else
-const GGLFormat* gglGetPixelFormatTable(size_t* numEntries);
-#endif
-
-
-// ----------------------------------------------------------------------------
-
-#endif // ANDROID_PIXELFLINGER_FORMAT_H
diff --git a/libpixelflinger/include/pixelflinger/pixelflinger.h b/libpixelflinger/include/pixelflinger/pixelflinger.h
deleted file mode 100644
index 8a2b442..0000000
--- a/libpixelflinger/include/pixelflinger/pixelflinger.h
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_PIXELFLINGER_H
-#define ANDROID_PIXELFLINGER_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <pixelflinger/format.h>
-
-// GGL types
-
-typedef int8_t			GGLbyte;		// b
-typedef int16_t			GGLshort;		// s
-typedef int32_t			GGLint;			// i
-typedef ssize_t			GGLsizei;		// i
-typedef int32_t			GGLfixed;		// x
-typedef int32_t			GGLclampx;		// x
-typedef float			GGLfloat;		// f
-typedef float			GGLclampf;		// f
-typedef double			GGLdouble;		// d
-typedef double			GGLclampd;		// d
-typedef uint8_t			GGLubyte;		// ub
-typedef uint8_t			GGLboolean;		// ub
-typedef uint16_t		GGLushort;		// us
-typedef uint32_t		GGLuint;		// ui
-typedef unsigned int	GGLenum;		// ui
-typedef unsigned int	GGLbitfield;	// ui
-typedef void			GGLvoid;
-typedef int32_t         GGLfixed32;
-typedef	int32_t         GGLcolor;
-typedef int32_t         GGLcoord;
-
-// ----------------------------------------------------------------------------
-
-#define GGL_MAX_VIEWPORT_DIMS           4096
-#define GGL_MAX_TEXTURE_SIZE            4096
-#define GGL_MAX_ALIASED_POINT_SIZE      0x7FFFFFF
-#define GGL_MAX_SMOOTH_POINT_SIZE       2048
-#define GGL_MAX_SMOOTH_LINE_WIDTH       2048
-
-// ----------------------------------------------------------------------------
-
-// All these names are compatible with their OpenGL equivalents
-// some of them are listed only for completeness
-enum GGLNames {
-	GGL_FALSE						= 0,
-	GGL_TRUE						= 1,
-
-	// enable/disable
-    GGL_SCISSOR_TEST                = 0x0C11,
-	GGL_TEXTURE_2D					= 0x0DE1,
-	GGL_ALPHA_TEST					= 0x0BC0,
-	GGL_BLEND						= 0x0BE2,
-	GGL_COLOR_LOGIC_OP				= 0x0BF2,
-	GGL_DITHER						= 0x0BD0,
-	GGL_STENCIL_TEST				= 0x0B90,
-	GGL_DEPTH_TEST					= 0x0B71,
-    GGL_AA                          = 0x80000001,
-    GGL_W_LERP                      = 0x80000004,
-    GGL_POINT_SMOOTH_NICE           = 0x80000005,
-
-    // buffers, pixel drawing/reading
-    GGL_COLOR                       = 0x1800,
-    
-    // fog
-    GGL_FOG                         = 0x0B60,
-    
-	// shade model
-	GGL_FLAT						= 0x1D00,
-	GGL_SMOOTH						= 0x1D01,
-
-	// Texture parameter name
-	GGL_TEXTURE_MIN_FILTER			= 0x2801,
-	GGL_TEXTURE_MAG_FILTER			= 0x2800,
-	GGL_TEXTURE_WRAP_S				= 0x2802,
-	GGL_TEXTURE_WRAP_T				= 0x2803,
-	GGL_TEXTURE_WRAP_R				= 0x2804,
-
-	// Texture Filter	
-	GGL_NEAREST						= 0x2600,
-	GGL_LINEAR						= 0x2601,
-	GGL_NEAREST_MIPMAP_NEAREST		= 0x2700,
-	GGL_LINEAR_MIPMAP_NEAREST		= 0x2701,
-	GGL_NEAREST_MIPMAP_LINEAR		= 0x2702,
-	GGL_LINEAR_MIPMAP_LINEAR		= 0x2703,
-
-	// Texture Wrap Mode
-	GGL_CLAMP						= 0x2900,
-	GGL_REPEAT						= 0x2901,
-    GGL_CLAMP_TO_EDGE               = 0x812F,
-
-	// Texture Env Mode
-	GGL_REPLACE						= 0x1E01,
-	GGL_MODULATE					= 0x2100,
-	GGL_DECAL						= 0x2101,
-	GGL_ADD							= 0x0104,
-
-	// Texture Env Parameter
-	GGL_TEXTURE_ENV_MODE			= 0x2200,
-	GGL_TEXTURE_ENV_COLOR			= 0x2201,
-
-	// Texture Env Target
-	GGL_TEXTURE_ENV					= 0x2300,
-
-    // Texture coord generation
-    GGL_TEXTURE_GEN_MODE            = 0x2500,
-    GGL_S                           = 0x2000,
-    GGL_T                           = 0x2001,
-    GGL_R                           = 0x2002,
-    GGL_Q                           = 0x2003,
-    GGL_ONE_TO_ONE                  = 0x80000002,
-    GGL_AUTOMATIC                   = 0x80000003,
-
-    // AlphaFunction
-    GGL_NEVER                       = 0x0200,
-    GGL_LESS                        = 0x0201,
-    GGL_EQUAL                       = 0x0202,
-    GGL_LEQUAL                      = 0x0203,
-    GGL_GREATER                     = 0x0204,
-    GGL_NOTEQUAL                    = 0x0205,
-    GGL_GEQUAL                      = 0x0206,
-    GGL_ALWAYS                      = 0x0207,
-
-    // LogicOp
-    GGL_CLEAR                       = 0x1500,   // 0
-    GGL_AND                         = 0x1501,   // s & d
-    GGL_AND_REVERSE                 = 0x1502,   // s & ~d
-    GGL_COPY                        = 0x1503,   // s
-    GGL_AND_INVERTED                = 0x1504,   // ~s & d
-    GGL_NOOP                        = 0x1505,   // d
-    GGL_XOR                         = 0x1506,   // s ^ d
-    GGL_OR                          = 0x1507,   // s | d
-    GGL_NOR                         = 0x1508,   // ~(s | d)
-    GGL_EQUIV                       = 0x1509,   // ~(s ^ d)
-    GGL_INVERT                      = 0x150A,   // ~d
-    GGL_OR_REVERSE                  = 0x150B,   // s | ~d
-    GGL_COPY_INVERTED               = 0x150C,   // ~s 
-    GGL_OR_INVERTED                 = 0x150D,   // ~s | d
-    GGL_NAND                        = 0x150E,   // ~(s & d)
-    GGL_SET                         = 0x150F,   // 1
-
-	// blending equation & function
-	GGL_ZERO                        = 0,		// SD
-	GGL_ONE                         = 1,		// SD
-	GGL_SRC_COLOR                   = 0x0300,	//  D
-	GGL_ONE_MINUS_SRC_COLOR         = 0x0301,	//	D
-	GGL_SRC_ALPHA                   = 0x0302,	// SD
-	GGL_ONE_MINUS_SRC_ALPHA			= 0x0303,	// SD
-	GGL_DST_ALPHA					= 0x0304,	// SD
-	GGL_ONE_MINUS_DST_ALPHA			= 0x0305,	// SD
-	GGL_DST_COLOR					= 0x0306,	// S
-	GGL_ONE_MINUS_DST_COLOR			= 0x0307,	// S
-	GGL_SRC_ALPHA_SATURATE			= 0x0308,	// S
-    
-    // clear bits
-    GGL_DEPTH_BUFFER_BIT            = 0x00000100,
-    GGL_STENCIL_BUFFER_BIT          = 0x00000400,
-    GGL_COLOR_BUFFER_BIT            = 0x00004000,
-
-    // errors
-    GGL_NO_ERROR                    = 0,
-    GGL_INVALID_ENUM                = 0x0500,
-    GGL_INVALID_VALUE               = 0x0501,
-    GGL_INVALID_OPERATION           = 0x0502,
-    GGL_STACK_OVERFLOW              = 0x0503,
-    GGL_STACK_UNDERFLOW             = 0x0504,
-    GGL_OUT_OF_MEMORY               = 0x0505
-};
-
-// ----------------------------------------------------------------------------
-
-typedef struct {
-    GGLsizei    version;    // always set to sizeof(GGLSurface)
-    GGLuint     width;      // width in pixels
-    GGLuint     height;     // height in pixels
-    GGLint      stride;     // stride in pixels
-    GGLubyte*   data;       // pointer to the bits
-    GGLubyte    format;     // pixel format
-    GGLubyte    rfu[3];     // must be zero
-    // these values are dependent on the used format
-    union {
-        GGLint  compressedFormat;
-        GGLint  vstride;
-    };
-    void*       reserved;
-} GGLSurface;
-
-
-typedef struct {
-    // immediate rendering
-    void (*pointx)(void *con, const GGLcoord* v, GGLcoord r);
-    void (*linex)(void *con, 
-            const GGLcoord* v0, const GGLcoord* v1, GGLcoord width);
-    void (*recti)(void* c, GGLint l, GGLint t, GGLint r, GGLint b); 
-    void (*trianglex)(void* c,
-            GGLcoord const* v0, GGLcoord const* v1, GGLcoord const* v2);
-
-    // scissor
-    void (*scissor)(void* c, GGLint x, GGLint y, GGLsizei width, GGLsizei height);
-
-    // Set the textures and color buffers
-    void (*activeTexture)(void* c, GGLuint tmu);
-    void (*bindTexture)(void* c, const GGLSurface* surface);
-    void (*colorBuffer)(void* c, const GGLSurface* surface);
-    void (*readBuffer)(void* c, const GGLSurface* surface);
-    void (*depthBuffer)(void* c, const GGLSurface* surface);
-    void (*bindTextureLod)(void* c, GGLuint tmu, const GGLSurface* surface);
-
-    // enable/disable features
-    void (*enable)(void* c, GGLenum name);
-    void (*disable)(void* c, GGLenum name);
-    void (*enableDisable)(void* c, GGLenum name, GGLboolean en);
-
-    // specify the fragment's color
-    void (*shadeModel)(void* c, GGLenum mode);
-    void (*color4xv)(void* c, const GGLclampx* color);
-    // specify color iterators (16.16)
-    void (*colorGrad12xv)(void* c, const GGLcolor* grad);
-
-    // specify Z coordinate iterators (0.32)
-    void (*zGrad3xv)(void* c, const GGLfixed32* grad);
-
-    // specify W coordinate iterators (16.16)
-    void (*wGrad3xv)(void* c, const GGLfixed* grad);
-
-    // specify fog iterator & color (16.16)
-    void (*fogGrad3xv)(void* c, const GGLfixed* grad);
-    void (*fogColor3xv)(void* c, const GGLclampx* color);
-
-    // specify blending parameters
-    void (*blendFunc)(void* c, GGLenum src, GGLenum dst);
-    void (*blendFuncSeparate)(void* c,  GGLenum src, GGLenum dst,
-                                        GGLenum srcAlpha, GGLenum dstAplha);
-
-    // texture environnement (REPLACE / MODULATE / DECAL / BLEND)
-    void (*texEnvi)(void* c,    GGLenum target,
-                                GGLenum pname,
-                                GGLint param);
-
-    void (*texEnvxv)(void* c, GGLenum target,
-            GGLenum pname, const GGLfixed* params);
-
-    // texture parameters (Wrapping, filter)
-    void (*texParameteri)(void* c,  GGLenum target,
-                                    GGLenum pname,
-                                    GGLint param);
-
-    // texture iterators (16.16)
-    void (*texCoord2i)(void* c, GGLint s, GGLint t);
-    void (*texCoord2x)(void* c, GGLfixed s, GGLfixed t);
-    
-    // s, dsdx, dsdy, scale, t, dtdx, dtdy, tscale
-    // This api uses block floating-point for S and T texture coordinates.
-    // All values are given in 16.16, scaled by 'scale'. In other words,
-    // set scale to 0, for 16.16 values.
-    void (*texCoordGradScale8xv)(void* c, GGLint tmu, const int32_t* grad8);
-    
-    void (*texGeni)(void* c, GGLenum coord, GGLenum pname, GGLint param);
-
-    // masking
-    void (*colorMask)(void* c,  GGLboolean red,
-                                GGLboolean green,
-                                GGLboolean blue,
-                                GGLboolean alpha);
-
-    void (*depthMask)(void* c, GGLboolean flag);
-
-    void (*stencilMask)(void* c, GGLuint mask);
-
-    // alpha func
-    void (*alphaFuncx)(void* c, GGLenum func, GGLclampx ref);
-
-    // depth func
-    void (*depthFunc)(void* c, GGLenum func);
-
-    // logic op
-    void (*logicOp)(void* c, GGLenum opcode); 
-
-    // clear
-    void (*clear)(void* c, GGLbitfield mask);
-    void (*clearColorx)(void* c,
-            GGLclampx r, GGLclampx g, GGLclampx b, GGLclampx a);
-    void (*clearDepthx)(void* c, GGLclampx depth);
-    void (*clearStencil)(void* c, GGLint s);
-
-    // framebuffer operations
-    void (*copyPixels)(void* c, GGLint x, GGLint y,
-            GGLsizei width, GGLsizei height, GGLenum type);
-    void (*rasterPos2x)(void* c, GGLfixed x, GGLfixed y);
-    void (*rasterPos2i)(void* c, GGLint x, GGLint y);
-} GGLContext;
-
-// ----------------------------------------------------------------------------
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// construct / destroy the context
-ssize_t gglInit(GGLContext** context);
-ssize_t gglUninit(GGLContext* context);
-
-GGLint gglBitBlit(
-        GGLContext* c,
-        int tmu,
-        GGLint crop[4],
-        GGLint where[4]);
-
-#ifdef __cplusplus
-};
-#endif
-
-// ----------------------------------------------------------------------------
-
-#endif // ANDROID_PIXELFLINGER_H
diff --git a/libpixelflinger/include/private/pixelflinger/ggl_context.h b/libpixelflinger/include/private/pixelflinger/ggl_context.h
deleted file mode 100644
index 563b0f1..0000000
--- a/libpixelflinger/include/private/pixelflinger/ggl_context.h
+++ /dev/null
@@ -1,565 +0,0 @@
-/*
- * Copyright (C) 2006 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_GGL_CONTEXT_H
-#define ANDROID_GGL_CONTEXT_H
-
-#include <stdint.h>
-#include <stddef.h>
-#include <string.h>
-#include <sys/types.h>
-#include <endian.h>
-
-#include <pixelflinger/pixelflinger.h>
-#include <private/pixelflinger/ggl_fixed.h>
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-#if BYTE_ORDER == LITTLE_ENDIAN
-
-inline uint32_t GGL_RGBA_TO_HOST(uint32_t v) {
-    return v;
-}
-inline uint32_t GGL_HOST_TO_RGBA(uint32_t v) {
-    return v;
-}
-
-#else
-
-inline uint32_t GGL_RGBA_TO_HOST(uint32_t v) {
-#if defined(__mips__) && __mips_isa_rev>=2
-    uint32_t r;
-    __asm__("wsbh %0, %1;"
-        "rotr %0, %0, 16"
-        : "=r" (r)
-        : "r" (v)
-        );
-    return r;
-#else
-    return (v<<24) | (v>>24) | ((v<<8)&0xff0000) | ((v>>8)&0xff00);
-#endif
-}
-inline uint32_t GGL_HOST_TO_RGBA(uint32_t v) {
-#if defined(__mips__) && __mips_isa_rev>=2
-    uint32_t r;
-    __asm__("wsbh %0, %1;"
-        "rotr %0, %0, 16"
-        : "=r" (r)
-        : "r" (v)
-        );
-    return r;
-#else
-    return (v<<24) | (v>>24) | ((v<<8)&0xff0000) | ((v>>8)&0xff00);
-#endif
-}
-
-#endif
-
-// ----------------------------------------------------------------------------
-
-const int GGL_DITHER_BITS = 6;  // dither weights stored on 6 bits
-const int GGL_DITHER_ORDER_SHIFT= 3;
-const int GGL_DITHER_ORDER      = (1<<GGL_DITHER_ORDER_SHIFT);
-const int GGL_DITHER_SIZE       = GGL_DITHER_ORDER * GGL_DITHER_ORDER;
-const int GGL_DITHER_MASK       = GGL_DITHER_ORDER-1;
-
-// ----------------------------------------------------------------------------
-
-const int GGL_SUBPIXEL_BITS = 4;
-
-// TRI_FRACTION_BITS defines the number of bits we want to use
-// for the sub-pixel coordinates during the edge stepping, the
-// value shouldn't be more than 7, or bad things are going to
-// happen when drawing large triangles (8 doesn't work because
-// 32 bit muls will loose the sign bit)
-
-#define  TRI_FRACTION_BITS  (GGL_SUBPIXEL_BITS)
-#define  TRI_ONE            (1 << TRI_FRACTION_BITS)
-#define  TRI_HALF           (1 << (TRI_FRACTION_BITS-1))
-#define  TRI_FROM_INT(x)    ((x) << TRI_FRACTION_BITS)
-#define  TRI_FRAC(x)        ((x)                 &  (TRI_ONE-1))
-#define  TRI_FLOOR(x)       ((x)                 & ~(TRI_ONE-1))
-#define  TRI_CEIL(x)        (((x) + (TRI_ONE-1)) & ~(TRI_ONE-1))
-#define  TRI_ROUND(x)       (((x) +  TRI_HALF  ) & ~(TRI_ONE-1))
-
-#define  TRI_ROUDNING       (1 << (16 - TRI_FRACTION_BITS - 1))
-#define  TRI_FROM_FIXED(x)  (((x)+TRI_ROUDNING) >> (16-TRI_FRACTION_BITS))
-
-#define  TRI_SNAP_NEXT_HALF(x)   (TRI_CEIL((x)+TRI_HALF) - TRI_HALF)
-#define  TRI_SNAP_PREV_HALF(x)   (TRI_CEIL((x)-TRI_HALF) - TRI_HALF)
-
-// ----------------------------------------------------------------------------
-
-const int GGL_COLOR_BITS = 24;
-
-// To maintain 8-bits color chanels, with a maximum GGLSurface
-// size of 4096 and GGL_SUBPIXEL_BITS=4, we need 8 + 12 + 4 = 24 bits
-// for encoding the color iterators
-
-inline GGLcolor gglFixedToIteratedColor(GGLfixed c) {
-    return (c << 8) - c;
-}
-
-// ----------------------------------------------------------------------------
-
-template<bool> struct CTA;
-template<> struct CTA<true> { };
-
-#define GGL_CONTEXT(con, c)         context_t *(con) = static_cast<context_t *>(c) /* NOLINT */
-#define GGL_OFFSETOF(field)         uintptr_t(&(((context_t*)0)->field))
-#define GGL_INIT_PROC(p, f)         p.f = ggl_ ## f;
-#define GGL_BETWEEN(x, L, H)        (uint32_t((x)-(L)) <= ((H)-(L)))
-
-#define ggl_likely(x)	__builtin_expect(!!(x), 1)
-#define ggl_unlikely(x)	__builtin_expect(!!(x), 0)
-
-const int GGL_TEXTURE_UNIT_COUNT    = 2;
-const int GGL_TMU_STATE             = 0x00000001;
-const int GGL_CB_STATE              = 0x00000002;
-const int GGL_PIXEL_PIPELINE_STATE  = 0x00000004;
-
-// ----------------------------------------------------------------------------
-
-#define GGL_RESERVE_NEEDS(name, l, s)                               \
-    const uint32_t  GGL_NEEDS_##name##_MASK = (((1LU<<(s))-1)<<(l));  \
-    const uint32_t  GGL_NEEDS_##name##_SHIFT = (l);
-
-#define GGL_BUILD_NEEDS(val, name)                                  \
-    (((val)<<(GGL_NEEDS_##name##_SHIFT)) & GGL_NEEDS_##name##_MASK)
-
-#define GGL_READ_NEEDS(name, n)                                     \
-    (uint32_t((n) & GGL_NEEDS_##name##_MASK) >> GGL_NEEDS_##name##_SHIFT)
-
-#define GGL_NEED_MASK(name)     (uint32_t(GGL_NEEDS_##name##_MASK))
-#define GGL_NEED(name, val)     GGL_BUILD_NEEDS(val, name)
-
-GGL_RESERVE_NEEDS( CB_FORMAT,       0, 6 )
-GGL_RESERVE_NEEDS( SHADE,           6, 1 )
-GGL_RESERVE_NEEDS( W,               7, 1 )
-GGL_RESERVE_NEEDS( BLEND_SRC,       8, 4 )
-GGL_RESERVE_NEEDS( BLEND_DST,      12, 4 )
-GGL_RESERVE_NEEDS( BLEND_SRCA,     16, 4 )
-GGL_RESERVE_NEEDS( BLEND_DSTA,     20, 4 )
-GGL_RESERVE_NEEDS( LOGIC_OP,       24, 4 )
-GGL_RESERVE_NEEDS( MASK_ARGB,      28, 4 )
-
-GGL_RESERVE_NEEDS( P_ALPHA_TEST,    0, 3 )
-GGL_RESERVE_NEEDS( P_AA,            3, 1 )
-GGL_RESERVE_NEEDS( P_DEPTH_TEST,    4, 3 )
-GGL_RESERVE_NEEDS( P_MASK_Z,        7, 1 )
-GGL_RESERVE_NEEDS( P_DITHER,        8, 1 )
-GGL_RESERVE_NEEDS( P_FOG,           9, 1 )
-GGL_RESERVE_NEEDS( P_RESERVED1,    10,22 )
-
-GGL_RESERVE_NEEDS( T_FORMAT,        0, 6 )
-GGL_RESERVE_NEEDS( T_RESERVED0,     6, 1 )
-GGL_RESERVE_NEEDS( T_POT,           7, 1 )
-GGL_RESERVE_NEEDS( T_S_WRAP,        8, 2 )
-GGL_RESERVE_NEEDS( T_T_WRAP,       10, 2 )
-GGL_RESERVE_NEEDS( T_ENV,          12, 3 )
-GGL_RESERVE_NEEDS( T_LINEAR,       15, 1 )
-
-const int GGL_NEEDS_WRAP_CLAMP_TO_EDGE  = 0;
-const int GGL_NEEDS_WRAP_REPEAT         = 1;
-const int GGL_NEEDS_WRAP_11             = 2;
-
-inline uint32_t ggl_wrap_to_needs(uint32_t e) {
-    switch (e) {
-    case GGL_CLAMP:         return GGL_NEEDS_WRAP_CLAMP_TO_EDGE;
-    case GGL_REPEAT:        return GGL_NEEDS_WRAP_REPEAT;
-    }
-    return 0;
-}
-
-inline uint32_t ggl_blendfactor_to_needs(uint32_t b) {
-    if (b <= 1) return b;
-    return (b & 0xF)+2;
-}
-
-inline uint32_t ggl_needs_to_blendfactor(uint32_t n) {
-    if (n <= 1) return n;
-    return (n - 2) + 0x300;
-}
-
-inline uint32_t ggl_env_to_needs(uint32_t e) {
-    switch (e) {
-    case GGL_REPLACE:   return 0;
-    case GGL_MODULATE:  return 1;
-    case GGL_DECAL:     return 2;
-    case GGL_BLEND:     return 3;
-    case GGL_ADD:       return 4;
-    }
-    return 0;
-}
-
-inline uint32_t ggl_needs_to_env(uint32_t n) {
-    const uint32_t envs[] = { GGL_REPLACE, GGL_MODULATE, 
-            GGL_DECAL, GGL_BLEND, GGL_ADD };
-    return envs[n];
-
-}
-
-// ----------------------------------------------------------------------------
-
-enum {
-    GGL_ENABLE_BLENDING     = 0x00000001,
-    GGL_ENABLE_SMOOTH       = 0x00000002,
-    GGL_ENABLE_AA           = 0x00000004,
-    GGL_ENABLE_LOGIC_OP     = 0x00000008,
-    GGL_ENABLE_ALPHA_TEST   = 0x00000010,
-    GGL_ENABLE_SCISSOR_TEST = 0x00000020,
-    GGL_ENABLE_TMUS         = 0x00000040,
-    GGL_ENABLE_DEPTH_TEST   = 0x00000080,
-    GGL_ENABLE_STENCIL_TEST = 0x00000100,
-    GGL_ENABLE_W            = 0x00000200,
-    GGL_ENABLE_DITHER       = 0x00000400,
-    GGL_ENABLE_FOG          = 0x00000800,
-    GGL_ENABLE_POINT_AA_NICE= 0x00001000
-};
-
-// ----------------------------------------------------------------------------
-
-struct needs_filter_t;
-struct needs_t {
-    inline int match(const needs_filter_t& filter);
-    inline bool operator == (const needs_t& rhs) const {
-        return  (n==rhs.n) &&
-                (p==rhs.p) &&
-                (t[0]==rhs.t[0]) &&
-                (t[1]==rhs.t[1]);
-    }
-    inline bool operator != (const needs_t& rhs) const {
-        return !operator == (rhs);
-    }
-    uint32_t    n;
-    uint32_t    p;
-    uint32_t    t[GGL_TEXTURE_UNIT_COUNT];
-};
-
-inline int compare_type(const needs_t& lhs, const needs_t& rhs) {
-    return memcmp(&lhs, &rhs, sizeof(needs_t));
-}
-
-struct needs_filter_t {
-    needs_t     value;
-    needs_t     mask;
-};
-
-int needs_t::match(const needs_filter_t& filter) {
-    uint32_t result = 
-        ((filter.value.n ^ n)       & filter.mask.n)    |
-        ((filter.value.p ^ p)       & filter.mask.p)    |
-        ((filter.value.t[0] ^ t[0]) & filter.mask.t[0]) |
-        ((filter.value.t[1] ^ t[1]) & filter.mask.t[1]);
-    return (result == 0);
-}
-
-// ----------------------------------------------------------------------------
-
-struct context_t;
-class Assembly;
-
-struct blend_state_t {
-	uint32_t			src;
-	uint32_t			dst;
-	uint32_t			src_alpha;
-	uint32_t			dst_alpha;
-	uint8_t				reserved;
-	uint8_t				alpha_separate;
-	uint8_t				operation;
-	uint8_t				equation;
-};
-
-struct mask_state_t {
-    uint8_t             color;
-    uint8_t             depth;
-    uint32_t            stencil;
-};
-
-struct clear_state_t {
-    GGLclampx           r;
-    GGLclampx           g;
-    GGLclampx           b;
-    GGLclampx           a;
-    GGLclampx           depth;
-    GGLint              stencil;
-    uint32_t            colorPacked;
-    uint32_t            depthPacked;
-    uint32_t            stencilPacked;
-    uint32_t            dirty;
-};
-
-struct fog_state_t {
-    uint8_t     color[4];
-};
-
-struct logic_op_state_t {
-    uint16_t            opcode;
-};
-
-struct alpha_test_state_t {
-    uint16_t            func;
-    GGLcolor            ref;
-};
-
-struct depth_test_state_t {
-    uint16_t            func;
-    GGLclampx           clearValue;
-};
-
-struct scissor_t {
-    uint32_t            user_left;
-    uint32_t            user_right;
-    uint32_t            user_top;
-    uint32_t            user_bottom;
-    uint32_t            left;
-    uint32_t            right;
-    uint32_t            top;
-    uint32_t            bottom;
-};
-
-struct pixel_t {
-    uint32_t    c[4];
-    uint8_t     s[4];
-};
-
-struct surface_t {
-    union {
-        GGLSurface          s;
-        // Keep the following struct field types in line with the corresponding
-        // GGLSurface fields to avoid mismatches leading to errors.
-        struct {
-            GGLsizei        reserved;
-            GGLuint         width;
-            GGLuint         height;
-            GGLint          stride;
-            GGLubyte*       data;
-            GGLubyte        format;
-            GGLubyte        dirty;
-            GGLubyte        pad[2];
-        };
-    };
-    void                (*read) (const surface_t* s, context_t* c,
-                                uint32_t x, uint32_t y, pixel_t* pixel);
-    void                (*write)(const surface_t* s, context_t* c,
-                                uint32_t x, uint32_t y, const pixel_t* pixel);
-};
-
-// ----------------------------------------------------------------------------
-
-struct texture_shade_t {
-    union {
-        struct {
-            int32_t             is0;
-            int32_t             idsdx;
-            int32_t             idsdy;
-            int                 sscale;
-            int32_t             it0;
-            int32_t             idtdx;
-            int32_t             idtdy;
-            int                 tscale;
-        };
-        struct {
-            int32_t             v;
-            int32_t             dx;
-            int32_t             dy;
-            int                 scale;
-        } st[2];
-    };
-};
-
-struct texture_iterators_t {
-    // these are not encoded in the same way than in the
-    // texture_shade_t structure
-    union {
-        struct {
-            GGLfixed			ydsdy;
-            GGLfixed            dsdx;
-            GGLfixed            dsdy;
-            int                 sscale;
-            GGLfixed			ydtdy;
-            GGLfixed            dtdx;
-            GGLfixed            dtdy;
-            int                 tscale;
-        };
-        struct {
-            GGLfixed			ydvdy;
-            GGLfixed            dvdx;
-            GGLfixed            dvdy;
-            int                 scale;
-        } st[2];
-    };
-};
-
-struct texture_t {
-	surface_t			surface;
-	texture_iterators_t	iterators;
-    texture_shade_t     shade;
-	uint32_t			s_coord;
-	uint32_t            t_coord;
-	uint16_t			s_wrap;
-	uint16_t            t_wrap;
-	uint16_t            min_filter;
-	uint16_t            mag_filter;
-    uint16_t            env;
-    uint8_t             env_color[4];
-	uint8_t				enable;
-	uint8_t				dirty;
-};
-
-struct raster_t {
-    GGLfixed            x;
-    GGLfixed            y;
-};
-
-struct framebuffer_t {
-    surface_t           color;
-    surface_t           read;
-	surface_t			depth;
-	surface_t			stencil;
-    int16_t             *coverage;
-    size_t              coverageBufferSize;
-};
-
-// ----------------------------------------------------------------------------
-
-struct iterators_t {
-	int32_t             xl;
-	int32_t             xr;
-    int32_t             y;
-	GGLcolor			ydady;
-	GGLcolor			ydrdy;
-	GGLcolor			ydgdy;
-	GGLcolor			ydbdy;
-	GGLfixed			ydzdy;
-	GGLfixed			ydwdy;
-	GGLfixed			ydfdy;
-};
-
-struct shade_t {
-	GGLcolor			a0;
-    GGLcolor            dadx;
-    GGLcolor            dady;
-	GGLcolor			r0;
-    GGLcolor            drdx;
-    GGLcolor            drdy;
-	GGLcolor			g0;
-    GGLcolor            dgdx;
-    GGLcolor            dgdy;
-	GGLcolor			b0;
-    GGLcolor            dbdx;
-    GGLcolor            dbdy;
-	uint32_t            z0;
-    GGLfixed32          dzdx;
-    GGLfixed32          dzdy;
-	GGLfixed            w0;
-    GGLfixed            dwdx;
-    GGLfixed            dwdy;
-	uint32_t			f0;
-    GGLfixed            dfdx;
-    GGLfixed            dfdy;
-};
-
-// these are used in the generated code
-// we use this mirror structure to improve
-// data locality in the pixel pipeline
-struct generated_tex_vars_t {
-    uint32_t    width;
-    uint32_t    height;
-    uint32_t    stride;
-    uintptr_t   data;
-    int32_t     dsdx;
-    int32_t     dtdx;
-    int32_t     spill[2];
-};
-
-struct generated_vars_t {
-    struct {
-        int32_t c;
-        int32_t dx;
-    } argb[4];
-    int32_t     aref;
-    int32_t     dzdx;
-    int32_t     zbase;
-    int32_t     f;
-    int32_t     dfdx;
-    int32_t     spill[3];
-    generated_tex_vars_t    texture[GGL_TEXTURE_UNIT_COUNT];
-    int32_t     rt;
-    int32_t     lb;
-};
-
-// ----------------------------------------------------------------------------
-
-struct state_t {
-	framebuffer_t		buffers;
-	texture_t			texture[GGL_TEXTURE_UNIT_COUNT];
-    scissor_t           scissor;
-    raster_t            raster;
-	blend_state_t		blend;
-    alpha_test_state_t  alpha_test;
-    depth_test_state_t  depth_test;
-    mask_state_t        mask;
-    clear_state_t       clear;
-    fog_state_t         fog;
-    logic_op_state_t    logic_op;
-    uint32_t            enables;
-    uint32_t            enabled_tmu;
-    needs_t             needs;
-};
-
-// ----------------------------------------------------------------------------
-
-struct context_t {
-	GGLContext          procs;
-	state_t             state;
-    shade_t             shade;
-	iterators_t         iterators;
-    generated_vars_t    generated_vars                __attribute__((aligned(32)));
-    uint8_t             ditherMatrix[GGL_DITHER_SIZE] __attribute__((aligned(32)));
-    uint32_t            packed;
-    uint32_t            packed8888;
-    const GGLFormat*    formats;
-    uint32_t            dirty;
-    texture_t*          activeTMU;
-    uint32_t            activeTMUIndex;
-
-    void                (*init_y)(context_t* c, int32_t y);
-	void                (*step_y)(context_t* c);
-	void                (*scanline)(context_t* c);
-    void                (*span)(context_t* c);
-    void                (*rect)(context_t* c, size_t yc);
-    
-    void*               base;
-    Assembly*           scanline_as;
-    GGLenum             error;
-};
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_context(context_t* context);
-void ggl_uninit_context(context_t* context);
-void ggl_error(context_t* c, GGLenum error);
-int64_t ggl_system_time();
-
-// ----------------------------------------------------------------------------
-
-};
-
-#endif // ANDROID_GGL_CONTEXT_H
-
diff --git a/libpixelflinger/include/private/pixelflinger/ggl_fixed.h b/libpixelflinger/include/private/pixelflinger/ggl_fixed.h
deleted file mode 100644
index 4217a89..0000000
--- a/libpixelflinger/include/private/pixelflinger/ggl_fixed.h
+++ /dev/null
@@ -1,878 +0,0 @@
-/*
- * Copyright (C) 2005 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_GGL_FIXED_H
-#define ANDROID_GGL_FIXED_H
-
-#include <math.h>
-#include <pixelflinger/pixelflinger.h>
-
-// ----------------------------------------------------------------------------
-
-#define CONST           __attribute__((const))
-#define ALWAYS_INLINE   __attribute__((always_inline))
-
-const GGLfixed FIXED_BITS = 16;
-const GGLfixed FIXED_EPSILON  = 1;
-const GGLfixed FIXED_ONE  = 1L<<FIXED_BITS;
-const GGLfixed FIXED_HALF = 1L<<(FIXED_BITS-1);
-const GGLfixed FIXED_MIN  = 0x80000000L;
-const GGLfixed FIXED_MAX  = 0x7FFFFFFFL;
-
-inline GGLfixed gglIntToFixed(GGLfixed i)       ALWAYS_INLINE ;
-inline GGLfixed gglFixedToIntRound(GGLfixed f)  ALWAYS_INLINE ;
-inline GGLfixed gglFixedToIntFloor(GGLfixed f)  ALWAYS_INLINE ;
-inline GGLfixed gglFixedToIntCeil(GGLfixed f)   ALWAYS_INLINE ;
-inline GGLfixed gglFracx(GGLfixed v)            ALWAYS_INLINE ;
-inline GGLfixed gglFloorx(GGLfixed v)           ALWAYS_INLINE ;
-inline GGLfixed gglCeilx(GGLfixed v)            ALWAYS_INLINE ;
-inline GGLfixed gglCenterx(GGLfixed v)          ALWAYS_INLINE ;
-inline GGLfixed gglRoundx(GGLfixed v)           ALWAYS_INLINE ;
-
-GGLfixed gglIntToFixed(GGLfixed i) {
-    return i<<FIXED_BITS;
-}
-GGLfixed gglFixedToIntRound(GGLfixed f) {
-    return (f + FIXED_HALF)>>FIXED_BITS;
-}
-GGLfixed gglFixedToIntFloor(GGLfixed f) {
-    return f>>FIXED_BITS;
-}
-GGLfixed gglFixedToIntCeil(GGLfixed f) {
-    return (f + ((1<<FIXED_BITS) - 1))>>FIXED_BITS;
-}
-
-GGLfixed gglFracx(GGLfixed v) {
-    return v & ((1<<FIXED_BITS)-1);
-}
-GGLfixed gglFloorx(GGLfixed v) {
-    return gglFixedToIntFloor(v)<<FIXED_BITS;
-}
-GGLfixed gglCeilx(GGLfixed v) {
-    return gglFixedToIntCeil(v)<<FIXED_BITS;
-}
-GGLfixed gglCenterx(GGLfixed v) {
-    return gglFloorx(v + FIXED_HALF) | FIXED_HALF;
-}
-GGLfixed gglRoundx(GGLfixed v) {
-    return gglFixedToIntRound(v)<<FIXED_BITS;
-}
-
-// conversion from (unsigned) int, short, byte to fixed...
-#define GGL_B_TO_X(_x)      GGLfixed( ((int32_t(_x)+1)>>1)<<10 )
-#define GGL_S_TO_X(_x)      GGLfixed( ((int32_t(_x)+1)>>1)<<2 )
-#define GGL_I_TO_X(_x)      GGLfixed( ((int32_t(_x)>>1)+1)>>14 )
-#define GGL_UB_TO_X(_x)     GGLfixed(   uint32_t(_x) +      \
-                                        (uint32_t(_x)<<8) + \
-                                        (uint32_t(_x)>>7) )
-#define GGL_US_TO_X(_x)     GGLfixed( (_x) + ((_x)>>15) )
-#define GGL_UI_TO_X(_x)     GGLfixed( (((_x)>>1)+1)>>15 )
-
-// ----------------------------------------------------------------------------
-
-GGLfixed gglPowx(GGLfixed x, GGLfixed y) CONST;
-GGLfixed gglSqrtx(GGLfixed a) CONST;
-GGLfixed gglSqrtRecipx(GGLfixed x) CONST;
-int32_t gglMulDivi(int32_t a, int32_t b, int32_t c);
-
-int32_t gglRecipQNormalized(int32_t x, int* exponent);
-int32_t gglRecipQ(GGLfixed x, int q) CONST;
-
-inline GGLfixed gglRecip(GGLfixed x) CONST;
-inline GGLfixed gglRecip(GGLfixed x) {
-    return gglRecipQ(x, 16);
-}
-
-inline GGLfixed gglRecip28(GGLfixed x) CONST;
-int32_t gglRecip28(GGLfixed x) {
-    return gglRecipQ(x, 28);
-}
-
-// ----------------------------------------------------------------------------
-
-#if defined(__arm__) && !defined(__thumb__)
-
-// inline ARM implementations
-inline GGLfixed gglMulx(GGLfixed x, GGLfixed y, int shift) CONST;
-__attribute__((always_inline)) inline GGLfixed gglMulx(GGLfixed x, GGLfixed y, int shift) {
-    GGLfixed result, t;
-    if (__builtin_constant_p(shift)) {
-    asm("smull  %[lo], %[hi], %[x], %[y]            \n"
-        "movs   %[lo], %[lo], lsr %[rshift]         \n"
-        "adc    %[lo], %[lo], %[hi], lsl %[lshift]  \n"
-        : [lo]"=r"(result), [hi]"=r"(t), [x]"=r"(x)
-        : "%[x]"(x), [y]"r"(y), [lshift] "I"(32-shift), [rshift] "I"(shift)
-        : "cc"
-        );
-    } else {
-    asm("smull  %[lo], %[hi], %[x], %[y]            \n"
-        "movs   %[lo], %[lo], lsr %[rshift]         \n"
-        "adc    %[lo], %[lo], %[hi], lsl %[lshift]  \n"
-        : [lo]"=&r"(result), [hi]"=&r"(t), [x]"=&r"(x)
-        : "%[x]"(x), [y]"r"(y), [lshift] "r"(32-shift), [rshift] "r"(shift)
-        : "cc"
-        );
-    }
-    return result;
-}
-
-inline GGLfixed gglMulAddx(GGLfixed x, GGLfixed y, GGLfixed a, int shift) CONST;
-__attribute__((always_inline)) inline GGLfixed gglMulAddx(GGLfixed x, GGLfixed y, GGLfixed a,
-                                                          int shift) {
-    GGLfixed result, t;
-    if (__builtin_constant_p(shift)) {
-    asm("smull  %[lo], %[hi], %[x], %[y]            \n"
-        "add    %[lo], %[a],  %[lo], lsr %[rshift]  \n"
-        "add    %[lo], %[lo], %[hi], lsl %[lshift]  \n"
-        : [lo]"=&r"(result), [hi]"=&r"(t), [x]"=&r"(x)
-        : "%[x]"(x), [y]"r"(y), [a]"r"(a), [lshift] "I"(32-shift), [rshift] "I"(shift)
-        );
-    } else {
-    asm("smull  %[lo], %[hi], %[x], %[y]            \n"
-        "add    %[lo], %[a],  %[lo], lsr %[rshift]  \n"
-        "add    %[lo], %[lo], %[hi], lsl %[lshift]  \n"
-        : [lo]"=&r"(result), [hi]"=&r"(t), [x]"=&r"(x)
-        : "%[x]"(x), [y]"r"(y), [a]"r"(a), [lshift] "r"(32-shift), [rshift] "r"(shift)
-        );
-    }
-    return result;
-}
-
-inline GGLfixed gglMulSubx(GGLfixed x, GGLfixed y, GGLfixed a, int shift) CONST;
-inline GGLfixed gglMulSubx(GGLfixed x, GGLfixed y, GGLfixed a, int shift) {
-    GGLfixed result, t;
-    if (__builtin_constant_p(shift)) {
-    asm("smull  %[lo], %[hi], %[x], %[y]            \n"
-        "rsb    %[lo], %[a],  %[lo], lsr %[rshift]  \n"
-        "add    %[lo], %[lo], %[hi], lsl %[lshift]  \n"
-        : [lo]"=&r"(result), [hi]"=&r"(t), [x]"=&r"(x)
-        : "%[x]"(x), [y]"r"(y), [a]"r"(a), [lshift] "I"(32-shift), [rshift] "I"(shift)
-        );
-    } else {
-    asm("smull  %[lo], %[hi], %[x], %[y]            \n"
-        "rsb    %[lo], %[a],  %[lo], lsr %[rshift]  \n"
-        "add    %[lo], %[lo], %[hi], lsl %[lshift]  \n"
-        : [lo]"=&r"(result), [hi]"=&r"(t), [x]"=&r"(x)
-        : "%[x]"(x), [y]"r"(y), [a]"r"(a), [lshift] "r"(32-shift), [rshift] "r"(shift)
-        );
-    }
-    return result;
-}
-
-inline int64_t gglMulii(int32_t x, int32_t y) CONST;
-inline int64_t gglMulii(int32_t x, int32_t y)
-{
-    // 64-bits result: r0=low, r1=high
-    union {
-        struct {
-            int32_t lo;
-            int32_t hi;
-        } s;
-        int64_t res;
-    };
-    asm("smull %0, %1, %2, %3   \n"
-        : "=r"(s.lo), "=&r"(s.hi)
-        : "%r"(x), "r"(y)
-        :
-        );
-    return res;
-}
-#elif defined(__mips__) && __mips_isa_rev < 6
-
-/*inline MIPS implementations*/
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b, int shift) CONST;
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b, int shift) {
-    GGLfixed result,tmp,tmp1,tmp2;
-
-    if (__builtin_constant_p(shift)) {
-        if (shift == 0) {
-            asm ("mult %[a], %[b] \t\n"
-              "mflo  %[res]   \t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp)
-            : [a]"r"(a),[b]"r"(b)
-            : "%hi","%lo"
-            );
-        } else if (shift == 32)
-        {
-            asm ("mult %[a], %[b] \t\n"
-            "li  %[tmp],1\t\n"
-            "sll  %[tmp],%[tmp],0x1f\t\n"
-            "mflo %[res]   \t\n"
-            "addu %[tmp1],%[tmp],%[res] \t\n"
-            "sltu %[tmp1],%[tmp1],%[tmp]\t\n"   /*obit*/
-            "sra %[tmp],%[tmp],0x1f \t\n"
-            "mfhi  %[res]   \t\n"
-            "addu %[res],%[res],%[tmp]\t\n"
-            "addu %[res],%[res],%[tmp1]\t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1)
-            : [a]"r"(a),[b]"r"(b),[shift]"I"(shift)
-            : "%hi","%lo"
-            );
-        } else if ((shift >0) && (shift < 32))
-        {
-            asm ("mult %[a], %[b] \t\n"
-            "li  %[tmp],1 \t\n"
-            "sll  %[tmp],%[tmp],%[shiftm1] \t\n"
-            "mflo  %[res]   \t\n"
-            "addu %[tmp1],%[tmp],%[res] \t\n"
-            "sltu %[tmp1],%[tmp1],%[tmp] \t\n"  /*obit?*/
-            "addu  %[res],%[res],%[tmp] \t\n"
-            "mfhi  %[tmp]   \t\n"
-            "addu  %[tmp],%[tmp],%[tmp1] \t\n"
-            "sll   %[tmp],%[tmp],%[lshift] \t\n"
-            "srl   %[res],%[res],%[rshift]    \t\n"
-            "or    %[res],%[res],%[tmp] \t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-            : [a]"r"(a),[b]"r"(b),[lshift]"I"(32-shift),[rshift]"I"(shift),[shiftm1]"I"(shift-1)
-            : "%hi","%lo"
-            );
-        } else {
-            asm ("mult %[a], %[b] \t\n"
-            "li  %[tmp],1 \t\n"
-            "sll  %[tmp],%[tmp],%[shiftm1] \t\n"
-            "mflo  %[res]   \t\n"
-            "addu %[tmp1],%[tmp],%[res] \t\n"
-            "sltu %[tmp1],%[tmp1],%[tmp] \t\n"  /*obit?*/
-            "sra  %[tmp2],%[tmp],0x1f \t\n"
-            "addu  %[res],%[res],%[tmp] \t\n"
-            "mfhi  %[tmp]   \t\n"
-            "addu  %[tmp],%[tmp],%[tmp2] \t\n"
-            "addu  %[tmp],%[tmp],%[tmp1] \t\n"            /*tmp=hi*/
-            "srl   %[tmp2],%[res],%[rshift]    \t\n"
-            "srav  %[res], %[tmp],%[rshift]\t\n"
-            "sll   %[tmp],%[tmp],1 \t\n"
-            "sll   %[tmp],%[tmp],%[norbits] \t\n"
-            "or    %[tmp],%[tmp],%[tmp2] \t\n"
-            "movz  %[res],%[tmp],%[bit5] \t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-            : [a]"r"(a),[b]"r"(b),[norbits]"I"(~(shift)),[rshift]"I"(shift),[shiftm1] "I"(shift-1),[bit5]"I"(shift & 0x20)
-            : "%hi","%lo"
-            );
-        }
-    } else {
-        asm ("mult %[a], %[b] \t\n"
-        "li  %[tmp],1 \t\n"
-        "sll  %[tmp],%[tmp],%[shiftm1] \t\n"
-        "mflo  %[res]   \t\n"
-        "addu %[tmp1],%[tmp],%[res] \t\n"
-        "sltu %[tmp1],%[tmp1],%[tmp] \t\n"  /*obit?*/
-        "sra  %[tmp2],%[tmp],0x1f \t\n"
-        "addu  %[res],%[res],%[tmp] \t\n"
-        "mfhi  %[tmp]   \t\n"
-        "addu  %[tmp],%[tmp],%[tmp2] \t\n"
-        "addu  %[tmp],%[tmp],%[tmp1] \t\n"            /*tmp=hi*/
-        "srl   %[tmp2],%[res],%[rshift]    \t\n"
-        "srav  %[res], %[tmp],%[rshift]\t\n"
-        "sll   %[tmp],%[tmp],1 \t\n"
-        "sll   %[tmp],%[tmp],%[norbits] \t\n"
-        "or    %[tmp],%[tmp],%[tmp2] \t\n"
-        "movz  %[res],%[tmp],%[bit5] \t\n"
-         : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-         : [a]"r"(a),[b]"r"(b),[norbits]"r"(~(shift)),[rshift] "r"(shift),[shiftm1]"r"(shift-1),[bit5] "r"(shift & 0x20)
-         : "%hi","%lo"
-         );
-        }
-
-        return result;
-}
-
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) CONST;
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) {
-    GGLfixed result,t,tmp1,tmp2;
-
-    if (__builtin_constant_p(shift)) {
-        if (shift == 0) {
-                 asm ("mult %[a], %[b] \t\n"
-                 "mflo  %[lo]   \t\n"
-                 "addu  %[lo],%[lo],%[c]    \t\n"
-                 : [lo]"=&r"(result)
-                 : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                 : "%hi","%lo"
-                 );
-                } else if (shift == 32) {
-                    asm ("mult %[a], %[b] \t\n"
-                    "mfhi  %[lo]   \t\n"
-                    "addu  %[lo],%[lo],%[c]    \t\n"
-                    : [lo]"=&r"(result)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                    : "%hi","%lo"
-                    );
-                } else if ((shift>0) && (shift<32)) {
-                    asm ("mult %[a], %[b] \t\n"
-                    "mflo  %[res]   \t\n"
-                    "mfhi  %[t]   \t\n"
-                    "srl   %[res],%[res],%[rshift]    \t\n"
-                    "sll   %[t],%[t],%[lshift]     \t\n"
-                    "or  %[res],%[res],%[t]    \t\n"
-                    "addu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[lshift]"I"(32-shift),[rshift]"I"(shift)
-                    : "%hi","%lo"
-                    );
-                } else {
-                    asm ("mult %[a], %[b] \t\n"
-                    "nor %[tmp1],$zero,%[shift]\t\n"
-                    "mflo  %[res]   \t\n"
-                    "mfhi  %[t]   \t\n"
-                    "srl   %[res],%[res],%[shift]    \t\n"
-                    "sll   %[tmp2],%[t],1     \t\n"
-                    "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                    "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                    "srav  %[res],%[t],%[shift]     \t\n"
-                    "andi %[tmp2],%[shift],0x20\t\n"
-                    "movz %[res],%[tmp1],%[tmp2]\t\n"
-                    "addu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"I"(shift)
-                    : "%hi","%lo"
-                    );
-                }
-            } else {
-                asm ("mult %[a], %[b] \t\n"
-                "nor %[tmp1],$zero,%[shift]\t\n"
-                "mflo  %[res]   \t\n"
-                "mfhi  %[t]   \t\n"
-                "srl   %[res],%[res],%[shift]    \t\n"
-                "sll   %[tmp2],%[t],1     \t\n"
-                "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                "srav  %[res],%[t],%[shift]     \t\n"
-                "andi %[tmp2],%[shift],0x20\t\n"
-                "movz %[res],%[tmp1],%[tmp2]\t\n"
-                "addu  %[res],%[res],%[c]    \t\n"
-                : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"r"(shift)
-                : "%hi","%lo"
-                );
-            }
-            return result;
-}
-
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) CONST;
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) {
-    GGLfixed result,t,tmp1,tmp2;
-
-    if (__builtin_constant_p(shift)) {
-        if (shift == 0) {
-                 asm ("mult %[a], %[b] \t\n"
-                 "mflo  %[lo]   \t\n"
-                 "subu  %[lo],%[lo],%[c]    \t\n"
-                 : [lo]"=&r"(result)
-                 : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                 : "%hi","%lo"
-                 );
-                } else if (shift == 32) {
-                    asm ("mult %[a], %[b] \t\n"
-                    "mfhi  %[lo]   \t\n"
-                    "subu  %[lo],%[lo],%[c]    \t\n"
-                    : [lo]"=&r"(result)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                    : "%hi","%lo"
-                    );
-                } else if ((shift>0) && (shift<32)) {
-                    asm ("mult %[a], %[b] \t\n"
-                    "mflo  %[res]   \t\n"
-                    "mfhi  %[t]   \t\n"
-                    "srl   %[res],%[res],%[rshift]    \t\n"
-                    "sll   %[t],%[t],%[lshift]     \t\n"
-                    "or  %[res],%[res],%[t]    \t\n"
-                    "subu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[lshift]"I"(32-shift),[rshift]"I"(shift)
-                    : "%hi","%lo"
-                    );
-                } else {
-                    asm ("mult %[a], %[b] \t\n"
-                    "nor %[tmp1],$zero,%[shift]\t\n"
-                     "mflo  %[res]   \t\n"
-                     "mfhi  %[t]   \t\n"
-                     "srl   %[res],%[res],%[shift]    \t\n"
-                     "sll   %[tmp2],%[t],1     \t\n"
-                     "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                     "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                     "srav  %[res],%[t],%[shift]     \t\n"
-                     "andi %[tmp2],%[shift],0x20\t\n"
-                     "movz %[res],%[tmp1],%[tmp2]\t\n"
-                     "subu  %[res],%[res],%[c]    \t\n"
-                     : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                     : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"I"(shift)
-                     : "%hi","%lo"
-                     );
-                    }
-                } else {
-                asm ("mult %[a], %[b] \t\n"
-                "nor %[tmp1],$zero,%[shift]\t\n"
-                "mflo  %[res]   \t\n"
-                "mfhi  %[t]   \t\n"
-                "srl   %[res],%[res],%[shift]    \t\n"
-                "sll   %[tmp2],%[t],1     \t\n"
-                "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                "srav  %[res],%[t],%[shift]     \t\n"
-                "andi %[tmp2],%[shift],0x20\t\n"
-                "movz %[res],%[tmp1],%[tmp2]\t\n"
-                "subu  %[res],%[res],%[c]    \t\n"
-                : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"r"(shift)
-                : "%hi","%lo"
-                );
-            }
-    return result;
-}
-
-inline int64_t gglMulii(int32_t x, int32_t y) CONST;
-inline int64_t gglMulii(int32_t x, int32_t y) {
-    union {
-        struct {
-#if defined(__MIPSEL__)
-            int32_t lo;
-            int32_t hi;
-#elif defined(__MIPSEB__)
-            int32_t hi;
-            int32_t lo;
-#endif
-        } s;
-        int64_t res;
-    }u;
-    asm("mult %2, %3 \t\n"
-        "mfhi %1   \t\n"
-        "mflo %0   \t\n"
-        : "=r"(u.s.lo), "=&r"(u.s.hi)
-        : "%r"(x), "r"(y)
-	: "%hi","%lo"
-        );
-    return u.res;
-}
-
-#elif defined(__aarch64__)
-
-// inline AArch64 implementations
-
-inline GGLfixed gglMulx(GGLfixed x, GGLfixed y, int shift) CONST;
-inline GGLfixed gglMulx(GGLfixed x, GGLfixed y, int shift)
-{
-    GGLfixed result;
-    GGLfixed round;
-
-    asm("mov    %x[round], #1                        \n"
-        "lsl    %x[round], %x[round], %x[shift]      \n"
-        "lsr    %x[round], %x[round], #1             \n"
-        "smaddl %x[result], %w[x], %w[y],%x[round]   \n"
-        "lsr    %x[result], %x[result], %x[shift]    \n"
-        : [round]"=&r"(round), [result]"=&r"(result) \
-        : [x]"r"(x), [y]"r"(y), [shift] "r"(shift)   \
-        :
-       );
-    return result;
-}
-inline GGLfixed gglMulAddx(GGLfixed x, GGLfixed y, GGLfixed a, int shift) CONST;
-inline GGLfixed gglMulAddx(GGLfixed x, GGLfixed y, GGLfixed a, int shift)
-{
-    GGLfixed result;
-    asm("smull  %x[result], %w[x], %w[y]                     \n"
-        "lsr    %x[result], %x[result], %x[shift]            \n"
-        "add    %w[result], %w[result], %w[a]                \n"
-        : [result]"=&r"(result)                               \
-        : [x]"r"(x), [y]"r"(y), [a]"r"(a), [shift] "r"(shift) \
-        :
-        );
-    return result;
-}
-
-inline GGLfixed gglMulSubx(GGLfixed x, GGLfixed y, GGLfixed a, int shift) CONST;
-inline GGLfixed gglMulSubx(GGLfixed x, GGLfixed y, GGLfixed a, int shift)
-{
-
-    GGLfixed result;
-
-    asm("smull  %x[result], %w[x], %w[y]                     \n"
-        "lsr    %x[result], %x[result], %x[shift]            \n"
-        "sub    %w[result], %w[result], %w[a]                \n"
-        : [result]"=&r"(result)                               \
-        : [x]"r"(x), [y]"r"(y), [a]"r"(a), [shift] "r"(shift) \
-        :
-        );
-    return result;
-}
-inline int64_t gglMulii(int32_t x, int32_t y) CONST;
-inline int64_t gglMulii(int32_t x, int32_t y)
-{
-    int64_t res;
-    asm("smull  %x0, %w1, %w2 \n"
-        : "=r"(res)
-        : "%r"(x), "r"(y)
-        :
-        );
-    return res;
-}
-
-#elif defined(__mips__) && __mips_isa_rev == 6
-
-/*inline MIPS implementations*/
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b, int shift) CONST;
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b, int shift) {
-    GGLfixed result,tmp,tmp1,tmp2;
-
-    if (__builtin_constant_p(shift)) {
-        if (shift == 0) {
-            asm ("mul %[res], %[a], %[b] \t\n"
-            : [res]"=&r"(result)
-            : [a]"r"(a),[b]"r"(b)
-            );
-        } else if (shift == 32)
-        {
-            asm ("mul %[res], %[a], %[b] \t\n"
-            "li  %[tmp],1\t\n"
-            "sll  %[tmp],%[tmp],0x1f\t\n"
-            "addu %[tmp1],%[tmp],%[res] \t\n"
-            "muh %[res], %[a], %[b] \t\n"
-            "sltu %[tmp1],%[tmp1],%[tmp]\t\n"   /*obit*/
-            "sra %[tmp],%[tmp],0x1f \t\n"
-            "addu %[res],%[res],%[tmp]\t\n"
-            "addu %[res],%[res],%[tmp1]\t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1)
-            : [a]"r"(a),[b]"r"(b),[shift]"I"(shift)
-            );
-        } else if ((shift >0) && (shift < 32))
-        {
-            asm ("mul %[res], %[a], %[b] \t\n"
-            "li  %[tmp],1 \t\n"
-            "sll  %[tmp],%[tmp],%[shiftm1] \t\n"
-            "addu %[tmp1],%[tmp],%[res] \t\n"
-            "sltu %[tmp1],%[tmp1],%[tmp] \t\n"  /*obit?*/
-            "addu  %[res],%[res],%[tmp] \t\n"
-            "muh %[tmp], %[a], %[b] \t\n"
-            "addu  %[tmp],%[tmp],%[tmp1] \t\n"
-            "sll   %[tmp],%[tmp],%[lshift] \t\n"
-            "srl   %[res],%[res],%[rshift]    \t\n"
-            "or    %[res],%[res],%[tmp] \t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-            : [a]"r"(a),[b]"r"(b),[lshift]"I"(32-shift),[rshift]"I"(shift),[shiftm1]"I"(shift-1)
-            );
-        } else {
-            asm ("mul %[res], %[a], %[b] \t\n"
-            "li  %[tmp],1 \t\n"
-            "sll  %[tmp],%[tmp],%[shiftm1] \t\n"
-            "addu %[tmp1],%[tmp],%[res] \t\n"
-            "sltu %[tmp1],%[tmp1],%[tmp] \t\n"  /*obit?*/
-            "sra  %[tmp2],%[tmp],0x1f \t\n"
-            "addu  %[res],%[res],%[tmp] \t\n"
-            "muh  %[tmp], %[a], %[b]   \t\n"
-            "addu  %[tmp],%[tmp],%[tmp2] \t\n"
-            "addu  %[tmp],%[tmp],%[tmp1] \t\n"            /*tmp=hi*/
-            "srl   %[tmp2],%[res],%[rshift]    \t\n"
-            "srav  %[res], %[tmp],%[rshift]\t\n"
-            "sll   %[tmp],%[tmp],1 \t\n"
-            "sll   %[tmp],%[tmp],%[norbits] \t\n"
-            "or    %[tmp],%[tmp],%[tmp2] \t\n"
-            "seleqz  %[tmp],%[tmp],%[bit5] \t\n"
-            "selnez  %[res],%[res],%[bit5] \t\n"
-            "or    %[res],%[res],%[tmp] \t\n"
-            : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-            : [a]"r"(a),[b]"r"(b),[norbits]"I"(~(shift)),[rshift]"I"(shift),[shiftm1] "I"(shift-1),[bit5]"I"(shift & 0x20)
-            );
-        }
-    } else {
-        asm ("mul %[res], %[a], %[b] \t\n"
-        "li  %[tmp],1 \t\n"
-        "sll  %[tmp],%[tmp],%[shiftm1] \t\n"
-        "addu %[tmp1],%[tmp],%[res] \t\n"
-        "sltu %[tmp1],%[tmp1],%[tmp] \t\n"  /*obit?*/
-        "sra  %[tmp2],%[tmp],0x1f \t\n"
-        "addu  %[res],%[res],%[tmp] \t\n"
-        "muh  %[tmp], %[a], %[b] \t\n"
-        "addu  %[tmp],%[tmp],%[tmp2] \t\n"
-        "addu  %[tmp],%[tmp],%[tmp1] \t\n"            /*tmp=hi*/
-        "srl   %[tmp2],%[res],%[rshift]    \t\n"
-        "srav  %[res], %[tmp],%[rshift]\t\n"
-        "sll   %[tmp],%[tmp],1 \t\n"
-        "sll   %[tmp],%[tmp],%[norbits] \t\n"
-        "or    %[tmp],%[tmp],%[tmp2] \t\n"
-        "seleqz  %[tmp],%[tmp],%[bit5] \t\n"
-        "selnez  %[res],%[res],%[bit5] \t\n"
-        "or    %[res],%[res],%[tmp] \t\n"
-         : [res]"=&r"(result),[tmp]"=&r"(tmp),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-         : [a]"r"(a),[b]"r"(b),[norbits]"r"(~(shift)),[rshift] "r"(shift),[shiftm1]"r"(shift-1),[bit5] "r"(shift & 0x20)
-         );
-        }
-        return result;
-}
-
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) CONST;
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) {
-    GGLfixed result,t,tmp1,tmp2;
-
-    if (__builtin_constant_p(shift)) {
-        if (shift == 0) {
-                 asm ("mul %[lo], %[a], %[b] \t\n"
-                 "addu  %[lo],%[lo],%[c]    \t\n"
-                 : [lo]"=&r"(result)
-                 : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                 );
-                } else if (shift == 32) {
-                    asm ("muh %[lo], %[a], %[b] \t\n"
-                    "addu  %[lo],%[lo],%[c]    \t\n"
-                    : [lo]"=&r"(result)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                    );
-                } else if ((shift>0) && (shift<32)) {
-                    asm ("mul %[res], %[a], %[b] \t\n"
-                    "muh  %[t], %[a], %[b] \t\n"
-                    "srl   %[res],%[res],%[rshift]    \t\n"
-                    "sll   %[t],%[t],%[lshift]     \t\n"
-                    "or  %[res],%[res],%[t]    \t\n"
-                    "addu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[lshift]"I"(32-shift),[rshift]"I"(shift)
-                    );
-                } else {
-                    asm ("mul %[res], %[a], %[b] \t\n"
-                    "muh %[t], %[a], %[b] \t\n"
-                    "nor %[tmp1],$zero,%[shift]\t\n"
-                    "srl   %[res],%[res],%[shift]    \t\n"
-                    "sll   %[tmp2],%[t],1     \t\n"
-                    "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                    "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                    "srav  %[res],%[t],%[shift]     \t\n"
-                    "andi %[tmp2],%[shift],0x20\t\n"
-                    "seleqz %[tmp1],%[tmp1],%[tmp2]\t\n"
-                    "selnez %[res],%[res],%[tmp2]\t\n"
-                    "or %[res],%[res],%[tmp1]\t\n"
-                    "addu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"I"(shift)
-                    );
-                }
-            } else {
-                asm ("mul %[res], %[a], %[b] \t\n"
-                "muh %[t], %[a], %[b] \t\n"
-                "nor %[tmp1],$zero,%[shift]\t\n"
-                "srl   %[res],%[res],%[shift]    \t\n"
-                "sll   %[tmp2],%[t],1     \t\n"
-                "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                "srav  %[res],%[t],%[shift]     \t\n"
-                "andi %[tmp2],%[shift],0x20\t\n"
-                "seleqz %[tmp1],%[tmp1],%[tmp2]\t\n"
-                "selnez %[res],%[res],%[tmp2]\t\n"
-                "or %[res],%[res],%[tmp1]\t\n"
-                "addu  %[res],%[res],%[c]    \t\n"
-                : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"r"(shift)
-                );
-            }
-            return result;
-}
-
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) CONST;
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) {
-    GGLfixed result,t,tmp1,tmp2;
-
-    if (__builtin_constant_p(shift)) {
-        if (shift == 0) {
-                 asm ("mul %[lo], %[a], %[b] \t\n"
-                 "subu  %[lo],%[lo],%[c]    \t\n"
-                 : [lo]"=&r"(result)
-                 : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                 );
-                } else if (shift == 32) {
-                    asm ("muh %[lo], %[a], %[b] \t\n"
-                    "subu  %[lo],%[lo],%[c]    \t\n"
-                    : [lo]"=&r"(result)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c)
-                    );
-                } else if ((shift>0) && (shift<32)) {
-                    asm ("mul %[res], %[a], %[b] \t\n"
-                    "muh %[t], %[a], %[b] \t\n"
-                    "srl   %[res],%[res],%[rshift]    \t\n"
-                    "sll   %[t],%[t],%[lshift]     \t\n"
-                    "or  %[res],%[res],%[t]    \t\n"
-                    "subu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[lshift]"I"(32-shift),[rshift]"I"(shift)
-                    );
-                } else {
-                    asm ("mul %[res], %[a], %[b] \t\n"
-                    "muh %[t], %[a], %[b] \t\n"
-                    "nor %[tmp1],$zero,%[shift]\t\n"
-                    "srl   %[res],%[res],%[shift]    \t\n"
-                    "sll   %[tmp2],%[t],1     \t\n"
-                    "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                    "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                    "srav  %[res],%[t],%[shift]     \t\n"
-                    "andi %[tmp2],%[shift],0x20\t\n"
-                    "seleqz %[tmp1],%[tmp1],%[tmp2]\t\n"
-                    "selnez %[res],%[res],%[tmp2]\t\n"
-                    "or %[res],%[res],%[tmp1]\t\n"
-                    "subu  %[res],%[res],%[c]    \t\n"
-                    : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                    : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"I"(shift)
-                     );
-                    }
-                } else {
-                asm ("mul %[res], %[a], %[b] \t\n"
-                "muh %[t], %[a], %[b] \t\n"
-                "nor %[tmp1],$zero,%[shift]\t\n"
-                "srl   %[res],%[res],%[shift]    \t\n"
-                "sll   %[tmp2],%[t],1     \t\n"
-                "sllv  %[tmp2],%[tmp2],%[tmp1]     \t\n"
-                "or  %[tmp1],%[tmp2],%[res]    \t\n"
-                "srav  %[res],%[t],%[shift]     \t\n"
-                "andi %[tmp2],%[shift],0x20\t\n"
-                "seleqz %[tmp1],%[tmp1],%[tmp2]\t\n"
-                "selnez %[res],%[res],%[tmp2]\t\n"
-                "or %[res],%[res],%[tmp1]\t\n"
-                "subu  %[res],%[res],%[c]    \t\n"
-                : [res]"=&r"(result),[t]"=&r"(t),[tmp1]"=&r"(tmp1),[tmp2]"=&r"(tmp2)
-                : [a]"r"(a),[b]"r"(b),[c]"r"(c),[shift]"r"(shift)
-                );
-            }
-    return result;
-}
-
-inline int64_t gglMulii(int32_t x, int32_t y) CONST;
-inline int64_t gglMulii(int32_t x, int32_t y) {
-    union {
-        struct {
-#if defined(__MIPSEL__)
-            int32_t lo;
-            int32_t hi;
-#elif defined(__MIPSEB__)
-            int32_t hi;
-            int32_t lo;
-#endif
-        } s;
-        int64_t res;
-    }u;
-    asm("mul %0, %2, %3 \t\n"
-        "muh %1, %2, %3 \t\n"
-        : "=r"(u.s.lo), "=&r"(u.s.hi)
-        : "%r"(x), "r"(y)
-        );
-    return u.res;
-}
-
-#else // ----------------------------------------------------------------------
-
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b, int shift) CONST;
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b, int shift) {
-    return GGLfixed((int64_t(a)*b + (1<<(shift-1)))>>shift);
-}
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) CONST;
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) {
-    return GGLfixed((int64_t(a)*b)>>shift) + c;
-}
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) CONST;
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c, int shift) {
-    return GGLfixed((int64_t(a)*b)>>shift) - c;
-}
-inline int64_t gglMulii(int32_t a, int32_t b) CONST;
-inline int64_t gglMulii(int32_t a, int32_t b) {
-    return int64_t(a)*b;
-}
-
-#endif
-
-// ------------------------------------------------------------------------
-
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b) CONST;
-inline GGLfixed gglMulx(GGLfixed a, GGLfixed b) {
-    return gglMulx(a, b, 16);
-}
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c) CONST;
-inline GGLfixed gglMulAddx(GGLfixed a, GGLfixed b, GGLfixed c) {
-    return gglMulAddx(a, b, c, 16);
-}
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c) CONST;
-inline GGLfixed gglMulSubx(GGLfixed a, GGLfixed b, GGLfixed c) {
-    return gglMulSubx(a, b, c, 16);
-}
-
-// ------------------------------------------------------------------------
-
-inline int32_t gglClz(int32_t x) CONST;
-inline int32_t gglClz(int32_t x)
-{
-#if (defined(__arm__) && !defined(__thumb__)) || defined(__mips__) || defined(__aarch64__)
-    return __builtin_clz(x);
-#else
-    if (!x) return 32;
-    int32_t exp = 31;
-    if (x & 0xFFFF0000) { exp -=16; x >>= 16; }
-    if (x & 0x0000ff00) { exp -= 8; x >>= 8; }
-    if (x & 0x000000f0) { exp -= 4; x >>= 4; }
-    if (x & 0x0000000c) { exp -= 2; x >>= 2; }
-    if (x & 0x00000002) { exp -= 1; }
-    return exp;
-#endif
-}
-
-// ------------------------------------------------------------------------
-
-int32_t gglDivQ(GGLfixed n, GGLfixed d, int32_t i) CONST;
-
-inline int32_t gglDivQ16(GGLfixed n, GGLfixed d) CONST;
-inline int32_t gglDivQ16(GGLfixed n, GGLfixed d) {
-    return gglDivQ(n, d, 16);
-}
-
-inline int32_t gglDivx(GGLfixed n, GGLfixed d) CONST;
-inline int32_t gglDivx(GGLfixed n, GGLfixed d) {
-    return gglDivQ(n, d, 16);
-}
-
-// ------------------------------------------------------------------------
-
-inline GGLfixed gglRecipFast(GGLfixed x) CONST;
-inline GGLfixed gglRecipFast(GGLfixed x)
-{
-    // This is a really bad approximation of 1/x, but it's also
-    // very fast. x must be strictly positive.
-    // if x between [0.5, 1[ , then 1/x = 3-2*x
-    // (we use 2.30 fixed-point)
-    const int32_t lz = gglClz(x);
-    return (0xC0000000 - (x << (lz - 1))) >> (30-lz);
-}
-
-// ------------------------------------------------------------------------
-
-inline GGLfixed gglClampx(GGLfixed c) CONST;
-inline GGLfixed gglClampx(GGLfixed c)
-{
-#if defined(__thumb__)
-    // clamp without branches
-    c &= ~(c>>31);  c = FIXED_ONE - c;
-    c &= ~(c>>31);  c = FIXED_ONE - c;
-#else
-#if defined(__arm__)
-    // I don't know why gcc thinks its smarter than me! The code below
-    // clamps to zero in one instruction, but gcc won't generate it and
-    // replace it by a cmp + movlt (it's quite amazing actually).
-    asm("bic %0, %1, %1, asr #31\n" : "=r"(c) : "r"(c));
-#elif defined(__aarch64__)
-    asm("bic %w0, %w1, %w1, asr #31\n" : "=r"(c) : "r"(c));
-#else
-    c &= ~(c>>31);
-#endif
-    if (c>FIXED_ONE)
-        c = FIXED_ONE;
-#endif
-    return c;
-}
-
-// ------------------------------------------------------------------------
-
-#endif // ANDROID_GGL_FIXED_H
diff --git a/libpixelflinger/picker.cpp b/libpixelflinger/picker.cpp
deleted file mode 100644
index aa55229..0000000
--- a/libpixelflinger/picker.cpp
+++ /dev/null
@@ -1,173 +0,0 @@
-/* libs/pixelflinger/picker.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#include <stdio.h>
-
-#include "buffer.h"
-#include "scanline.h"
-#include "picker.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_picker(context_t* /*c*/)
-{
-}
-
-void ggl_pick(context_t* c)
-{
-    if (ggl_likely(!c->dirty))
-        return;
-        
-    // compute needs, see if they changed...
-    const uint32_t enables = c->state.enables;
-    needs_t new_needs(c->state.needs);
-
-    if (c->dirty & GGL_CB_STATE) {
-        new_needs.n &= ~GGL_NEEDS_CB_FORMAT_MASK;
-        new_needs.n |= GGL_BUILD_NEEDS(c->state.buffers.color.format, CB_FORMAT);
-        if (enables & GGL_ENABLE_BLENDING)
-            c->dirty |= GGL_PIXEL_PIPELINE_STATE;
-    }
-
-    if (c->dirty & GGL_PIXEL_PIPELINE_STATE) {
-        uint32_t n = GGL_BUILD_NEEDS(c->state.buffers.color.format, CB_FORMAT);
-        uint32_t p = 0;
-        if (enables & GGL_ENABLE_BLENDING) {
-            uint32_t src = c->state.blend.src;
-            uint32_t dst = c->state.blend.dst;
-            uint32_t src_alpha = c->state.blend.src_alpha;
-            uint32_t dst_alpha = c->state.blend.dst_alpha;
-            const GGLFormat& cbf = c->formats[ c->state.buffers.color.format ];
-            if (!cbf.c[GGLFormat::ALPHA].h) {
-                if ((src == GGL_ONE_MINUS_DST_ALPHA) ||
-                    (src == GGL_DST_ALPHA)) {
-                    src = GGL_ONE;
-                }
-                if ((src_alpha == GGL_ONE_MINUS_DST_ALPHA) ||
-                    (src_alpha == GGL_DST_ALPHA)) {
-                    src_alpha = GGL_ONE;
-                }
-                if ((dst == GGL_ONE_MINUS_DST_ALPHA) ||
-                    (dst == GGL_DST_ALPHA)) {
-                    dst = GGL_ONE;
-                }
-                if ((dst_alpha == GGL_ONE_MINUS_DST_ALPHA) ||
-                    (dst_alpha == GGL_DST_ALPHA)) {
-                    dst_alpha = GGL_ONE;
-                }
-            }
-
-            src       = ggl_blendfactor_to_needs(src);
-            dst       = ggl_blendfactor_to_needs(dst);
-            src_alpha = ggl_blendfactor_to_needs(src_alpha);
-            dst_alpha = ggl_blendfactor_to_needs(dst_alpha);
-                    
-            n |= GGL_BUILD_NEEDS( src, BLEND_SRC );
-            n |= GGL_BUILD_NEEDS( dst, BLEND_DST );
-            if (c->state.blend.alpha_separate) {
-                n |= GGL_BUILD_NEEDS( src_alpha, BLEND_SRCA );
-                n |= GGL_BUILD_NEEDS( dst_alpha, BLEND_DSTA );
-            } else {
-                n |= GGL_BUILD_NEEDS( src, BLEND_SRCA );
-                n |= GGL_BUILD_NEEDS( dst, BLEND_DSTA );
-            }
-        } else {
-            n |= GGL_BUILD_NEEDS( GGL_ONE,  BLEND_SRC );
-            n |= GGL_BUILD_NEEDS( GGL_ZERO, BLEND_DST );
-            n |= GGL_BUILD_NEEDS( GGL_ONE,  BLEND_SRCA );
-            n |= GGL_BUILD_NEEDS( GGL_ZERO, BLEND_DSTA );
-        }
-
-
-        n |= GGL_BUILD_NEEDS(c->state.mask.color^0xF,               MASK_ARGB);
-        n |= GGL_BUILD_NEEDS((enables & GGL_ENABLE_SMOOTH)  ?1:0,   SHADE);
-        if (enables & GGL_ENABLE_TMUS) {
-            n |= GGL_BUILD_NEEDS((enables & GGL_ENABLE_W)       ?1:0,   W);
-        }
-        p |= GGL_BUILD_NEEDS((enables & GGL_ENABLE_DITHER)  ?1:0,   P_DITHER);
-        p |= GGL_BUILD_NEEDS((enables & GGL_ENABLE_AA)      ?1:0,   P_AA);
-        p |= GGL_BUILD_NEEDS((enables & GGL_ENABLE_FOG)     ?1:0,   P_FOG);
-
-        if (enables & GGL_ENABLE_LOGIC_OP) {
-            n |= GGL_BUILD_NEEDS(c->state.logic_op.opcode, LOGIC_OP);
-        } else {
-            n |= GGL_BUILD_NEEDS(GGL_COPY, LOGIC_OP);
-        }
-
-        if (enables & GGL_ENABLE_ALPHA_TEST) {
-            p |= GGL_BUILD_NEEDS(c->state.alpha_test.func, P_ALPHA_TEST);
-        } else {
-            p |= GGL_BUILD_NEEDS(GGL_ALWAYS, P_ALPHA_TEST);
-        }
-
-        if (enables & GGL_ENABLE_DEPTH_TEST) {
-            p |= GGL_BUILD_NEEDS(c->state.depth_test.func, P_DEPTH_TEST);
-            p |= GGL_BUILD_NEEDS(c->state.mask.depth&1, P_MASK_Z);
-        } else {
-            p |= GGL_BUILD_NEEDS(GGL_ALWAYS, P_DEPTH_TEST);
-            // writing to the z-buffer is always disabled if depth-test
-            // is disabled.
-        }
-        new_needs.n = n;
-        new_needs.p = p;
-    }
-
-    if (c->dirty & GGL_TMU_STATE) {
-        int idx = 0;
-        for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-            const texture_t& tx = c->state.texture[i];
-            if (tx.enable) {
-                uint32_t t = 0;
-                t |= GGL_BUILD_NEEDS(tx.surface.format, T_FORMAT);
-                t |= GGL_BUILD_NEEDS(ggl_env_to_needs(tx.env), T_ENV);
-                t |= GGL_BUILD_NEEDS(0, T_POT);       // XXX: not used yet
-                if (tx.s_coord==GGL_ONE_TO_ONE && tx.t_coord==GGL_ONE_TO_ONE) {
-                    // we encode 1-to-1 into the wrap mode
-                    t |= GGL_BUILD_NEEDS(GGL_NEEDS_WRAP_11, T_S_WRAP);
-                    t |= GGL_BUILD_NEEDS(GGL_NEEDS_WRAP_11, T_T_WRAP);
-                } else {
-                    t |= GGL_BUILD_NEEDS(ggl_wrap_to_needs(tx.s_wrap), T_S_WRAP);
-                    t |= GGL_BUILD_NEEDS(ggl_wrap_to_needs(tx.t_wrap), T_T_WRAP);
-                }
-                if (tx.mag_filter == GGL_LINEAR) {
-                    t |= GGL_BUILD_NEEDS(1, T_LINEAR);
-                }
-                if (tx.min_filter == GGL_LINEAR) {
-                    t |= GGL_BUILD_NEEDS(1, T_LINEAR);
-                }
-                new_needs.t[idx++] = t;
-            } else {
-                new_needs.t[i] = 0;
-            }
-        }
-    }
-
-    if (new_needs != c->state.needs) {
-        c->state.needs = new_needs;
-        ggl_pick_texture(c);
-        ggl_pick_cb(c);
-        ggl_pick_scanline(c);
-    }
-    c->dirty = 0;
-}
-
-// ----------------------------------------------------------------------------
-}; // namespace android
-
diff --git a/libpixelflinger/picker.h b/libpixelflinger/picker.h
deleted file mode 100644
index 9cdbc3c..0000000
--- a/libpixelflinger/picker.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* libs/pixelflinger/picker.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_PICKER_H
-#define ANDROID_PICKER_H
-
-#include <private/pixelflinger/ggl_context.h>
-
-namespace android {
-
-void ggl_init_picker(context_t* c);
-void ggl_pick(context_t* c);
-
-}; // namespace android
-
-#endif
diff --git a/libpixelflinger/pixelflinger.cpp b/libpixelflinger/pixelflinger.cpp
deleted file mode 100644
index fd449b2..0000000
--- a/libpixelflinger/pixelflinger.cpp
+++ /dev/null
@@ -1,836 +0,0 @@
-/* libs/pixelflinger/pixelflinger.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include <sys/time.h>
-
-#include <pixelflinger/pixelflinger.h>
-#include <private/pixelflinger/ggl_context.h>
-
-#include "buffer.h"
-#include "clear.h"
-#include "picker.h"
-#include "raster.h"
-#include "scanline.h"
-#include "trap.h"
-
-#include "codeflinger/GGLAssembler.h"
-#include "codeflinger/CodeCache.h"
-
-#include <stdio.h> 
-
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-// 8x8 Bayer dither matrix
-static const uint8_t gDitherMatrix[GGL_DITHER_SIZE] = {
-     0, 32,  8, 40,  2, 34, 10, 42,
-    48, 16, 56, 24, 50, 18, 58, 26,
-    12, 44,  4, 36, 14, 46,  6, 38,
-    60, 28, 52, 20, 62, 30, 54, 22,
-     3, 35, 11, 43,  1, 33,  9, 41,
-    51, 19, 59, 27, 49, 17, 57, 25,
-    15, 47,  7, 39, 13, 45,  5, 37,
-    63, 31, 55, 23, 61, 29, 53, 21
-};
-
-static void ggl_init_procs(context_t* c);
-static void ggl_set_scissor(context_t* c);
-
-static void ggl_enable_blending(context_t* c, int enable);
-static void ggl_enable_scissor_test(context_t* c, int enable);
-static void ggl_enable_alpha_test(context_t* c, int enable);
-static void ggl_enable_logic_op(context_t* c, int enable);
-static void ggl_enable_dither(context_t* c, int enable);
-static void ggl_enable_stencil_test(context_t* c, int enable);
-static void ggl_enable_depth_test(context_t* c, int enable);
-static void ggl_enable_aa(context_t* c, int enable);
-static void ggl_enable_point_aa_nice(context_t* c, int enable);
-static void ggl_enable_texture2d(context_t* c, int enable);
-static void ggl_enable_w_lerp(context_t* c, int enable);
-static void ggl_enable_fog(context_t* c, int enable);
-
-static inline int min(int a, int b) CONST;
-static inline int min(int a, int b) {
-    return a < b ? a : b;
-}
-
-static inline int max(int a, int b) CONST;
-static inline int max(int a, int b) {
-    return a < b ? b : a;
-}
-
-// ----------------------------------------------------------------------------
-
-void ggl_error(context_t* c, GGLenum error)
-{
-    if (c->error == GGL_NO_ERROR)
-        c->error = error;
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_bindTexture(void* con, const GGLSurface* surface)
-{
-    GGL_CONTEXT(c, con);
-    if (surface->format != c->activeTMU->surface.format)
-        ggl_state_changed(c, GGL_TMU_STATE);    
-    ggl_set_surface(c, &(c->activeTMU->surface), surface);
-}
-
-
-static void ggl_bindTextureLod(void* con, GGLuint tmu,const GGLSurface* surface)
-{
-    GGL_CONTEXT(c, con);
-    // All LODs must have the same format
-    ggl_set_surface(c, &c->state.texture[tmu].surface, surface);
-}
-
-static void ggl_colorBuffer(void* con, const GGLSurface* surface)
-{
-    GGL_CONTEXT(c, con);
-    if (surface->format != c->state.buffers.color.format)
-        ggl_state_changed(c, GGL_CB_STATE);
-
-    if (surface->width > c->state.buffers.coverageBufferSize) {
-        // allocate the coverage factor buffer
-        free(c->state.buffers.coverage);
-        c->state.buffers.coverage = (int16_t*)malloc(surface->width * 2);
-        c->state.buffers.coverageBufferSize =
-                c->state.buffers.coverage ? surface->width : 0;
-    }
-    ggl_set_surface(c, &(c->state.buffers.color), surface);
-    if (c->state.buffers.read.format == 0) {
-        ggl_set_surface(c, &(c->state.buffers.read), surface);
-    }
-    ggl_set_scissor(c);
-}
-
-static void ggl_readBuffer(void* con, const GGLSurface* surface)
-{
-    GGL_CONTEXT(c, con);
-    ggl_set_surface(c, &(c->state.buffers.read), surface);
-}
-
-static void ggl_depthBuffer(void* con, const GGLSurface* surface)
-{
-    GGL_CONTEXT(c, con);
-    if (surface->format == GGL_PIXEL_FORMAT_Z_16) {
-        ggl_set_surface(c, &(c->state.buffers.depth), surface);
-    } else {
-        c->state.buffers.depth.format = GGL_PIXEL_FORMAT_NONE;
-        ggl_enable_depth_test(c, 0);
-    }
-}
-
-static void ggl_scissor(void* con, GGLint x, GGLint y,
-        GGLsizei width, GGLsizei height)
-{
-    GGL_CONTEXT(c, con);
-    c->state.scissor.user_left = x;
-    c->state.scissor.user_top = y;
-    c->state.scissor.user_right = x + width;
-    c->state.scissor.user_bottom = y + height;
-    ggl_set_scissor(c);
-}
-
-// ----------------------------------------------------------------------------
-
-static void enable_disable(context_t* c, GGLenum name, int en)
-{
-    switch (name) {
-    case GGL_BLEND:             ggl_enable_blending(c, en);      break;
-    case GGL_SCISSOR_TEST:      ggl_enable_scissor_test(c, en);  break;
-    case GGL_ALPHA_TEST:        ggl_enable_alpha_test(c, en);    break;
-    case GGL_COLOR_LOGIC_OP:    ggl_enable_logic_op(c, en);      break;
-    case GGL_DITHER:            ggl_enable_dither(c, en);        break;
-    case GGL_STENCIL_TEST:      ggl_enable_stencil_test(c, en);  break;
-    case GGL_DEPTH_TEST:        ggl_enable_depth_test(c, en);    break;
-    case GGL_AA:                ggl_enable_aa(c, en);            break;
-    case GGL_TEXTURE_2D:        ggl_enable_texture2d(c, en);     break;
-    case GGL_W_LERP:            ggl_enable_w_lerp(c, en);        break;
-    case GGL_FOG:               ggl_enable_fog(c, en);           break;
-    case GGL_POINT_SMOOTH_NICE: ggl_enable_point_aa_nice(c, en); break;
-    }
-}
-
-static void ggl_enable(void* con, GGLenum name)
-{
-    GGL_CONTEXT(c, con);
-    enable_disable(c, name, 1);
-}
-
-static void ggl_disable(void* con, GGLenum name)
-{
-    GGL_CONTEXT(c, con);
-    enable_disable(c, name, 0);
-}
-
-static void ggl_enableDisable(void* con, GGLenum name, GGLboolean en)
-{
-    GGL_CONTEXT(c, con);
-    enable_disable(c, name, en ? 1 : 0);
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_shadeModel(void* con, GGLenum mode)
-{
-    GGL_CONTEXT(c, con);
-    switch (mode) {
-    case GGL_FLAT:
-        if (c->state.enables & GGL_ENABLE_SMOOTH) {
-            c->state.enables &= ~GGL_ENABLE_SMOOTH;
-            ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-        }
-        break;
-    case GGL_SMOOTH:
-        if (!(c->state.enables & GGL_ENABLE_SMOOTH)) {
-            c->state.enables |= GGL_ENABLE_SMOOTH;
-            ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-        }
-        break;
-    default:
-        ggl_error(c, GGL_INVALID_ENUM);
-    }
-}
-
-static void ggl_color4xv(void* con, const GGLclampx* color)
-{
-    GGL_CONTEXT(c, con);
-	c->shade.r0 = gglFixedToIteratedColor(color[0]);
-	c->shade.g0 = gglFixedToIteratedColor(color[1]);
-	c->shade.b0 = gglFixedToIteratedColor(color[2]);
-	c->shade.a0 = gglFixedToIteratedColor(color[3]);
-}
-
-static void ggl_colorGrad12xv(void* con, const GGLcolor* grad)
-{
-    GGL_CONTEXT(c, con);
-    // it is very important to round the iterated value here because
-    // the rasterizer doesn't clamp them, therefore the iterated value
-    //must absolutely be correct.
-    // GGLColor is encoded as 8.16 value
-    const int32_t round = 0x8000;
-	c->shade.r0   = grad[ 0] + round;
-	c->shade.drdx = grad[ 1];
-	c->shade.drdy = grad[ 2];
-	c->shade.g0   = grad[ 3] + round;
-	c->shade.dgdx = grad[ 4];
-	c->shade.dgdy = grad[ 5];
-	c->shade.b0   = grad[ 6] + round;
-	c->shade.dbdx = grad[ 7];
-	c->shade.dbdy = grad[ 8];
-	c->shade.a0   = grad[ 9] + round;
-	c->shade.dadx = grad[10];
-	c->shade.dady = grad[11];
-}
-
-static void ggl_zGrad3xv(void* con, const GGLfixed32* grad)
-{
-    GGL_CONTEXT(c, con);
-    // z iterators are encoded as 0.32 fixed point and the z-buffer
-    // holds 16 bits, the rounding value is 0x8000.
-    const uint32_t round = 0x8000;
-	c->shade.z0   = grad[0] + round;
-	c->shade.dzdx = grad[1];
-	c->shade.dzdy = grad[2];
-}
-
-static void ggl_wGrad3xv(void* con, const GGLfixed* grad)
-{
-    GGL_CONTEXT(c, con);
-	c->shade.w0   = grad[0];
-	c->shade.dwdx = grad[1];
-	c->shade.dwdy = grad[2];
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_fogGrad3xv(void* con, const GGLfixed* grad)
-{
-    GGL_CONTEXT(c, con);
-	c->shade.f0     = grad[0];
-	c->shade.dfdx   = grad[1];
-	c->shade.dfdy   = grad[2];
-}
-
-static void ggl_fogColor3xv(void* con, const GGLclampx* color)
-{
-    GGL_CONTEXT(c, con);
-    const int32_t r = gglClampx(color[0]);
-    const int32_t g = gglClampx(color[1]);
-    const int32_t b = gglClampx(color[2]);
-    c->state.fog.color[GGLFormat::ALPHA]= 0xFF; // unused
-	c->state.fog.color[GGLFormat::RED]  = (r - (r>>8))>>8;
-	c->state.fog.color[GGLFormat::GREEN]= (g - (g>>8))>>8;
-	c->state.fog.color[GGLFormat::BLUE] = (b - (b>>8))>>8;
-}
-
-static void ggl_enable_fog(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_FOG)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_FOG;
-        else        c->state.enables &= ~GGL_ENABLE_FOG;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_blendFunc(void* con, GGLenum src, GGLenum dst)
-{
-    GGL_CONTEXT(c, con);
-    c->state.blend.src = src;
-    c->state.blend.src_alpha = src;
-    c->state.blend.dst = dst;
-    c->state.blend.dst_alpha = dst;
-    c->state.blend.alpha_separate = 0;
-    if (c->state.enables & GGL_ENABLE_BLENDING) {
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-static void ggl_blendFuncSeparate(void* con,
-        GGLenum src, GGLenum dst,
-        GGLenum srcAlpha, GGLenum dstAplha)
-{
-    GGL_CONTEXT(c, con);
-    c->state.blend.src = src;
-    c->state.blend.src_alpha = srcAlpha;
-    c->state.blend.dst = dst;
-    c->state.blend.dst_alpha = dstAplha;
-    c->state.blend.alpha_separate = 1;
-    if (c->state.enables & GGL_ENABLE_BLENDING) {
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_texEnvi(void* con,	GGLenum target,
-							GGLenum pname,
-							GGLint param)
-{
-    GGL_CONTEXT(c, con);
-    if (target != GGL_TEXTURE_ENV || pname != GGL_TEXTURE_ENV_MODE) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    switch (param) {
-    case GGL_REPLACE:
-    case GGL_MODULATE:
-    case GGL_DECAL:
-    case GGL_BLEND:
-    case GGL_ADD:
-        if (c->activeTMU->env != param) {
-            c->activeTMU->env = param;
-            ggl_state_changed(c, GGL_TMU_STATE);
-        }
-        break;
-    default:
-        ggl_error(c, GGL_INVALID_ENUM);
-    }
-}
-
-static void ggl_texEnvxv(void* con, GGLenum target,
-        GGLenum pname, const GGLfixed* params)
-{
-    GGL_CONTEXT(c, con);
-    if (target != GGL_TEXTURE_ENV) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    switch (pname) {
-    case GGL_TEXTURE_ENV_MODE:
-        ggl_texEnvi(con, target, pname, params[0]);
-        break;
-    case GGL_TEXTURE_ENV_COLOR: {
-        uint8_t* const color = c->activeTMU->env_color;
-        const GGLclampx r = gglClampx(params[0]);
-        const GGLclampx g = gglClampx(params[1]);
-        const GGLclampx b = gglClampx(params[2]);
-        const GGLclampx a = gglClampx(params[3]);
-        color[0] = (a-(a>>8))>>8;
-        color[1] = (r-(r>>8))>>8;
-        color[2] = (g-(g>>8))>>8;
-        color[3] = (b-(b>>8))>>8;
-        break;
-    }
-    default:
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-}
-
-
-static void ggl_texParameteri(void* con,
-        GGLenum target,
-        GGLenum pname,
-        GGLint param)
-{
-    GGL_CONTEXT(c, con);
-    if (target != GGL_TEXTURE_2D) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-
-    if (param == GGL_CLAMP_TO_EDGE)
-        param = GGL_CLAMP;
-
-    uint16_t* what = 0;
-    switch (pname) {
-    case GGL_TEXTURE_WRAP_S:
-        if ((param == GGL_CLAMP) ||
-            (param == GGL_REPEAT)) {
-            what = &c->activeTMU->s_wrap;
-        }
-        break;
-    case GGL_TEXTURE_WRAP_T:
-        if ((param == GGL_CLAMP) ||
-            (param == GGL_REPEAT)) {
-            what = &c->activeTMU->t_wrap;
-        }
-        break;
-    case GGL_TEXTURE_MIN_FILTER:
-        if ((param == GGL_NEAREST) ||
-            (param == GGL_NEAREST_MIPMAP_NEAREST) ||
-            (param == GGL_NEAREST_MIPMAP_LINEAR)) {
-            what = &c->activeTMU->min_filter;
-            param = GGL_NEAREST;
-        }
-        if ((param == GGL_LINEAR) ||
-            (param == GGL_LINEAR_MIPMAP_NEAREST) ||
-            (param == GGL_LINEAR_MIPMAP_LINEAR)) {
-            what = &c->activeTMU->min_filter;
-            param = GGL_LINEAR;
-        }
-        break;
-    case GGL_TEXTURE_MAG_FILTER:
-        if ((param == GGL_NEAREST) ||
-            (param == GGL_LINEAR)) {
-            what = &c->activeTMU->mag_filter;
-        }
-        break;
-    }
-    
-    if (!what) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    
-    if (*what != param) {
-        *what = param;
-        ggl_state_changed(c, GGL_TMU_STATE);
-    }
-}
-
-static void ggl_texCoordGradScale8xv(void* con, GGLint tmu, const int32_t* grad)
-{
-    GGL_CONTEXT(c, con);
-    texture_t& u = c->state.texture[tmu];
-	u.shade.is0   = grad[0];
-	u.shade.idsdx = grad[1];
-	u.shade.idsdy = grad[2];
-	u.shade.it0   = grad[3];
-	u.shade.idtdx = grad[4];
-	u.shade.idtdy = grad[5];
-    u.shade.sscale= grad[6];
-    u.shade.tscale= grad[7];
-}
-
-static void ggl_texCoord2x(void* con, GGLfixed s, GGLfixed t)
-{
-    GGL_CONTEXT(c, con);
-	c->activeTMU->shade.is0 = s;
-	c->activeTMU->shade.it0 = t;
-    c->activeTMU->shade.sscale= 0;
-    c->activeTMU->shade.tscale= 0;
-}
-
-static void ggl_texCoord2i(void* con, GGLint s, GGLint t)
-{
-    ggl_texCoord2x(con, s<<16, t<<16);
-}
-
-static void ggl_texGeni(void* con, GGLenum coord, GGLenum pname, GGLint param)
-{
-    GGL_CONTEXT(c, con);
-    if (pname != GGL_TEXTURE_GEN_MODE) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-
-    uint32_t* coord_ptr = 0;
-    if (coord == GGL_S)         coord_ptr = &(c->activeTMU->s_coord);
-    else if (coord == GGL_T)    coord_ptr = &(c->activeTMU->t_coord);
-
-    if (coord_ptr) {
-        if (*coord_ptr != uint32_t(param)) {
-            *coord_ptr = uint32_t(param);
-            ggl_state_changed(c, GGL_TMU_STATE);
-        }
-    } else {
-        ggl_error(c, GGL_INVALID_ENUM);
-    }
-}
-
-static void ggl_activeTexture(void* con, GGLuint tmu)
-{
-    GGL_CONTEXT(c, con);
-    if (tmu >= GGLuint(GGL_TEXTURE_UNIT_COUNT)) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    c->activeTMUIndex = tmu;
-    c->activeTMU = &(c->state.texture[tmu]);
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_colorMask(void* con, GGLboolean r,
-                                     GGLboolean g,
-                                     GGLboolean b,
-                                     GGLboolean a)
-{
-    GGL_CONTEXT(c, con);
-    int mask = 0;
-    if (a)  mask |= 1 << GGLFormat::ALPHA;
-    if (r)  mask |= 1 << GGLFormat::RED;
-    if (g)  mask |= 1 << GGLFormat::GREEN;
-    if (b)  mask |= 1 << GGLFormat::BLUE;
-    if (c->state.mask.color != mask) {
-        c->state.mask.color = mask;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-static void ggl_depthMask(void* con, GGLboolean flag)
-{
-    GGL_CONTEXT(c, con);
-    if (c->state.mask.depth != flag?1:0) {
-        c->state.mask.depth = flag?1:0;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-static void ggl_stencilMask(void* con, GGLuint mask)
-{
-    GGL_CONTEXT(c, con);
-    if (c->state.mask.stencil != mask) {
-        c->state.mask.stencil = mask;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_alphaFuncx(void* con, GGLenum func, GGLclampx ref)
-{
-    GGL_CONTEXT(c, con);
-    if ((func < GGL_NEVER) || (func > GGL_ALWAYS)) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    c->state.alpha_test.ref = gglFixedToIteratedColor(gglClampx(ref));
-    if (c->state.alpha_test.func != func) {
-        c->state.alpha_test.func = func;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_depthFunc(void* con, GGLenum func)
-{
-    GGL_CONTEXT(c, con);
-    if ((func < GGL_NEVER) || (func > GGL_ALWAYS)) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    if (c->state.depth_test.func != func) {
-        c->state.depth_test.func = func;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-static void ggl_logicOp(void* con, GGLenum opcode)
-{
-    GGL_CONTEXT(c, con);
-    if ((opcode < GGL_CLEAR) || (opcode > GGL_SET)) {
-        ggl_error(c, GGL_INVALID_ENUM);
-        return;
-    }
-    if (c->state.logic_op.opcode != opcode) {
-        c->state.logic_op.opcode = opcode;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-
-// ----------------------------------------------------------------------------
-
-void ggl_set_scissor(context_t* c)
-{
-    if (c->state.enables & GGL_ENABLE_SCISSOR_TEST) {
-        const int32_t l = c->state.scissor.user_left;
-        const int32_t t = c->state.scissor.user_top;
-        const int32_t r = c->state.scissor.user_right;
-        const int32_t b = c->state.scissor.user_bottom;
-        c->state.scissor.left   = max(0, l);
-        c->state.scissor.right  = min(c->state.buffers.color.width, r);
-        c->state.scissor.top    = max(0, t);
-        c->state.scissor.bottom = min(c->state.buffers.color.height, b);
-    } else {
-        c->state.scissor.left   = 0;
-        c->state.scissor.top    = 0;
-        c->state.scissor.right  = c->state.buffers.color.width;
-        c->state.scissor.bottom = c->state.buffers.color.height;
-    }
-}
-
-void ggl_enable_blending(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_BLENDING)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_BLENDING;
-        else        c->state.enables &= ~GGL_ENABLE_BLENDING;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_scissor_test(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_SCISSOR_TEST)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_SCISSOR_TEST;
-        else        c->state.enables &= ~GGL_ENABLE_SCISSOR_TEST;
-        ggl_set_scissor(c);
-    }
-}
-
-void ggl_enable_alpha_test(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_ALPHA_TEST)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_ALPHA_TEST;
-        else        c->state.enables &= ~GGL_ENABLE_ALPHA_TEST;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_logic_op(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_LOGIC_OP)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_LOGIC_OP;
-        else        c->state.enables &= ~GGL_ENABLE_LOGIC_OP;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_dither(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_DITHER)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_DITHER;
-        else        c->state.enables &= ~GGL_ENABLE_DITHER;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_stencil_test(context_t* /*c*/, int /*enable*/)
-{
-}
-
-void ggl_enable_depth_test(context_t* c, int enable)
-{
-    if (c->state.buffers.depth.format == 0)
-        enable = 0;
-    const int e = (c->state.enables & GGL_ENABLE_DEPTH_TEST)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_DEPTH_TEST;
-        else        c->state.enables &= ~GGL_ENABLE_DEPTH_TEST;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_aa(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_AA)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_AA;
-        else        c->state.enables &= ~GGL_ENABLE_AA;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_point_aa_nice(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_POINT_AA_NICE)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_POINT_AA_NICE;
-        else        c->state.enables &= ~GGL_ENABLE_POINT_AA_NICE;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_w_lerp(context_t* c, int enable)
-{
-    const int e = (c->state.enables & GGL_ENABLE_W)?1:0;
-    if (e != enable) {
-        if (enable) c->state.enables |= GGL_ENABLE_W;
-        else        c->state.enables &= ~GGL_ENABLE_W;
-        ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
-    }
-}
-
-void ggl_enable_texture2d(context_t* c, int enable)
-{
-    if (c->activeTMU->enable != enable) {
-        const uint32_t tmu = c->activeTMUIndex;
-        c->activeTMU->enable = enable;
-        const uint32_t mask = 1UL << tmu;
-        if (enable)                 c->state.enabled_tmu |= mask;
-        else                        c->state.enabled_tmu &= ~mask;
-        if (c->state.enabled_tmu)   c->state.enables |= GGL_ENABLE_TMUS;
-        else                        c->state.enables &= ~GGL_ENABLE_TMUS;
-        ggl_state_changed(c, GGL_TMU_STATE);
-    }
-}
-
-        
-// ----------------------------------------------------------------------------
-
-int64_t ggl_system_time()
-{
-    struct timespec t;
-    t.tv_sec = t.tv_nsec = 0;
-    clock_gettime(CLOCK_THREAD_CPUTIME_ID, &t);
-    return int64_t(t.tv_sec)*1000000000LL + t.tv_nsec;
-}
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_procs(context_t* c)
-{
-    GGLContext& procs = *(GGLContext*)c;
-    GGL_INIT_PROC(procs, scissor);
-    GGL_INIT_PROC(procs, activeTexture);
-    GGL_INIT_PROC(procs, bindTexture);
-    GGL_INIT_PROC(procs, bindTextureLod);
-    GGL_INIT_PROC(procs, colorBuffer);
-    GGL_INIT_PROC(procs, readBuffer);
-    GGL_INIT_PROC(procs, depthBuffer);
-    GGL_INIT_PROC(procs, enable);
-    GGL_INIT_PROC(procs, disable);
-    GGL_INIT_PROC(procs, enableDisable);
-    GGL_INIT_PROC(procs, shadeModel);
-    GGL_INIT_PROC(procs, color4xv);
-    GGL_INIT_PROC(procs, colorGrad12xv);
-    GGL_INIT_PROC(procs, zGrad3xv);
-    GGL_INIT_PROC(procs, wGrad3xv);
-    GGL_INIT_PROC(procs, fogGrad3xv);
-    GGL_INIT_PROC(procs, fogColor3xv);
-    GGL_INIT_PROC(procs, blendFunc);
-    GGL_INIT_PROC(procs, blendFuncSeparate);
-    GGL_INIT_PROC(procs, texEnvi);
-    GGL_INIT_PROC(procs, texEnvxv);
-    GGL_INIT_PROC(procs, texParameteri);
-    GGL_INIT_PROC(procs, texCoord2i);
-    GGL_INIT_PROC(procs, texCoord2x);
-    GGL_INIT_PROC(procs, texCoordGradScale8xv);
-    GGL_INIT_PROC(procs, texGeni);
-    GGL_INIT_PROC(procs, colorMask);
-    GGL_INIT_PROC(procs, depthMask);
-    GGL_INIT_PROC(procs, stencilMask);
-    GGL_INIT_PROC(procs, alphaFuncx);
-    GGL_INIT_PROC(procs, depthFunc);
-    GGL_INIT_PROC(procs, logicOp);
-    ggl_init_clear(c);
-}
-
-void ggl_init_context(context_t* c)
-{
-    memset(c, 0, sizeof(context_t));
-    ggl_init_procs(c);
-    ggl_init_trap(c);
-    ggl_init_scanline(c);
-    ggl_init_texture(c);
-    ggl_init_picker(c);
-    ggl_init_raster(c);
-    c->formats = gglGetPixelFormatTable();
-    c->state.blend.src = GGL_ONE;
-    c->state.blend.dst = GGL_ZERO;
-    c->state.blend.src_alpha = GGL_ONE;
-    c->state.blend.dst_alpha = GGL_ZERO;
-    c->state.mask.color = 0xF;
-    c->state.mask.depth = 0;
-    c->state.mask.stencil = 0xFFFFFFFF;
-    c->state.logic_op.opcode = GGL_COPY;
-    c->state.alpha_test.func = GGL_ALWAYS;
-    c->state.depth_test.func = GGL_LESS;
-    c->state.depth_test.clearValue = FIXED_ONE;
-    c->shade.w0 = FIXED_ONE;
-    memcpy(c->ditherMatrix, gDitherMatrix, sizeof(gDitherMatrix));
-}
-
-void ggl_uninit_context(context_t* c)
-{
-    ggl_uninit_scanline(c);
-}
-
-// ----------------------------------------------------------------------------
-}; // namespace android
-// ----------------------------------------------------------------------------
-
-
-
-using namespace android;
-
-ssize_t gglInit(GGLContext** context)
-{
-    void* const base = malloc(sizeof(context_t) + 32);
-	if (base) {
-        // always align the context on cache lines
-        context_t *c = (context_t *)((ptrdiff_t(base)+31) & ~0x1FL);
-        ggl_init_context(c);
-        c->base = base;
-		*context = (GGLContext*)c;
-	} else {
-		return -1;
-	}
-	return 0;
-}
-
-ssize_t gglUninit(GGLContext* con)
-{
-    GGL_CONTEXT(c, (void*)con);
-    ggl_uninit_context(c);
-	free(c->base);
-	return 0;
-}
-
diff --git a/libpixelflinger/raster.cpp b/libpixelflinger/raster.cpp
deleted file mode 100644
index e95c2c8..0000000
--- a/libpixelflinger/raster.cpp
+++ /dev/null
@@ -1,216 +0,0 @@
-/* libs/pixelflinger/raster.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-
-#include <string.h>
-
-#include "raster.h"
-#include "trap.h"
-
-namespace android {
-
-static void ggl_rasterPos2x(void* con, GGLfixed x, GGLfixed y);
-static void ggl_rasterPos2i(void* con, GGLint x, GGLint y);
-static void ggl_copyPixels(void* con, GGLint xs, GGLint ys,
-        GGLsizei width, GGLsizei height, GGLenum type);
-
-void ggl_init_raster(context_t* c)
-{
-    GGLContext& procs = *(GGLContext*)c;
-    GGL_INIT_PROC(procs, copyPixels);
-    GGL_INIT_PROC(procs, rasterPos2x);
-    GGL_INIT_PROC(procs, rasterPos2i);
-}
-
-void ggl_rasterPos2x(void* con, GGLfixed x, GGLfixed y)
-{
-    GGL_CONTEXT(c, con);
-    // raster pos should be processed just like glVertex
-    c->state.raster.x = x;
-    c->state.raster.y = y;
-}
-
-void ggl_rasterPos2i(void* con, GGLint x, GGLint y)
-{
-    ggl_rasterPos2x(con, gglIntToFixed(x), gglIntToFixed(y));
-}
-
-void ggl_copyPixels(void* con, GGLint xs, GGLint ys,
-        GGLsizei width, GGLsizei height, GGLenum /*type*/)
-{
-    GGL_CONTEXT(c, con);
-
-    // color-buffer
-    surface_t* cb = &(c->state.buffers.color);
-
-    // undefined behaviour if we try to copy from outside the surface
-    if (uint32_t(xs) > cb->width)
-        return;
-    if (uint32_t(ys) > cb->height)
-        return;
-    if (uint32_t(xs + width) > cb->width)
-        return;
-    if (uint32_t(ys + height) > cb->height)
-        return;
-
-    // copy to current raster position
-    GGLint xd = gglFixedToIntRound(c->state.raster.x);
-    GGLint yd = gglFixedToIntRound(c->state.raster.y);
-
-    // clip to scissor
-    if (xd < GGLint(c->state.scissor.left)) {
-        GGLint offset = GGLint(c->state.scissor.left) - xd;
-        xd = GGLint(c->state.scissor.left);
-        xs += offset;
-        width -= offset;
-    }
-    if (yd < GGLint(c->state.scissor.top)) {
-        GGLint offset = GGLint(c->state.scissor.top) - yd;
-        yd = GGLint(c->state.scissor.top);
-        ys += offset;
-        height -= offset;
-    }
-    if ((xd + width) > GGLint(c->state.scissor.right)) {
-        width = GGLint(c->state.scissor.right) - xd;
-    }
-    if ((yd + height) > GGLint(c->state.scissor.bottom)) {
-        height = GGLint(c->state.scissor.bottom) - yd;
-    }
-
-    if (width<=0 || height<=0) {
-        return; // nothing to copy
-    }
-
-    if (xs==xd && ys==yd) {
-        // nothing to do, but be careful, this might not be true when we support
-        // gglPixelTransfer, gglPixelMap and gglPixelZoom
-        return;
-    }
-
-    const GGLFormat* fp = &(c->formats[cb->format]);
-    uint8_t* src = reinterpret_cast<uint8_t*>(cb->data)
-            + (xs + (cb->stride * ys)) * fp->size;
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data)
-            + (xd + (cb->stride * yd)) * fp->size;
-    const size_t bpr = cb->stride * fp->size;
-    const size_t rowsize = width * fp->size;
-    size_t yc = height;
-
-    if (ys < yd) {
-        // bottom to top
-        src += height * bpr;
-        dst += height * bpr;
-        do {
-            dst -= bpr;
-            src -= bpr;
-            memcpy(dst, src, rowsize);
-        } while (--yc);
-    } else {
-        if (ys == yd) {
-            // might be right to left
-            do {
-                memmove(dst, src, rowsize);
-                dst += bpr;
-                src += bpr;
-            } while (--yc);
-        } else {
-            // top to bottom
-            do {
-                memcpy(dst, src, rowsize);
-                dst += bpr;
-                src += bpr;
-            } while (--yc);
-        }
-    }
-}
-
-}; // namespace android
-
-using namespace android;
-
-GGLint gglBitBlit(GGLContext* con, int tmu, GGLint crop[4], GGLint where[4])
-{
-    GGL_CONTEXT(c, (void*)con);
-
-     GGLint x = where[0];
-     GGLint y = where[1];
-     GGLint w = where[2];
-     GGLint h = where[3];
-
-    // exclsively enable this tmu
-    c->procs.activeTexture(c, tmu);
-    c->procs.disable(c, GGL_W_LERP);
-
-    uint32_t tmus = 1UL<<tmu;
-    if (c->state.enabled_tmu != tmus) {
-        c->activeTMU->enable = 1;
-        c->state.enabled_tmu = tmus;
-        c->state.enables |= GGL_ENABLE_TMUS;
-        ggl_state_changed(c, GGL_TMU_STATE);
-    }
-
-    const GGLint Wcr = crop[2];
-    const GGLint Hcr = crop[3];
-    if ((w == Wcr) && (h == Hcr)) {
-        c->procs.texGeni(c, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
-        c->procs.texGeni(c, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
-        const GGLint Ucr = crop[0];
-        const GGLint Vcr = crop[1];
-        const GGLint s0  = Ucr - x;
-        const GGLint t0  = Vcr - y;
-        c->procs.texCoord2i(c, s0, t0);
-        c->procs.recti(c, x, y, x+w, y+h);
-    } else {
-        int32_t texcoords[8];
-        x = gglIntToFixed(x);
-        y = gglIntToFixed(y); 
-    
-        // we CLAMP here, which works with premultiplied (s,t)
-        c->procs.texParameteri(c, GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_S, GGL_CLAMP);
-        c->procs.texParameteri(c, GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_T, GGL_CLAMP);
-        c->procs.texGeni(c, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
-        c->procs.texGeni(c, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
-    
-        const GGLint Ucr = crop[0] << 16;
-        const GGLint Vcr = crop[1] << 16;
-        const GGLint Wcr = crop[2] << 16;
-        const GGLint Hcr = crop[3] << 16;
-    
-        // computes texture coordinates (pre-multiplied)
-        int32_t dsdx = Wcr / w;   // dsdx = ((Wcr/w)/Wt)*Wt
-        int32_t dtdy = Hcr / h;   // dtdy = ((Hcr/h)/Ht)*Ht
-        int32_t s0   = Ucr - gglMulx(dsdx, x); // s0 = Ucr - x * dsdx
-        int32_t t0   = Vcr - gglMulx(dtdy, y); // t0 = Vcr - y * dtdy
-        texcoords[0] = s0;
-        texcoords[1] = dsdx;
-        texcoords[2] = 0;
-        texcoords[3] = t0;
-        texcoords[4] = 0;
-        texcoords[5] = dtdy;
-        texcoords[6] = 0;
-        texcoords[7] = 0;
-        c->procs.texCoordGradScale8xv(c, tmu, texcoords);
-        c->procs.recti(c, 
-                gglFixedToIntRound(x),
-                gglFixedToIntRound(y),
-                gglFixedToIntRound(x)+w,
-                gglFixedToIntRound(y)+h);
-    }
-    return 0;
-}
-
diff --git a/libpixelflinger/raster.h b/libpixelflinger/raster.h
deleted file mode 100644
index 9f0f240..0000000
--- a/libpixelflinger/raster.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* libs/pixelflinger/raster.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_GGL_RASTER_H
-#define ANDROID_GGL_RASTER_H
-
-#include <private/pixelflinger/ggl_context.h>
-
-namespace android {
-
-void ggl_init_raster(context_t* c);
-
-void gglCopyPixels(void* c, GGLint x, GGLint y, GGLsizei width, GGLsizei height, GGLenum type);
-void gglRasterPos2d(void* c, GGLint x, GGLint y);
-
-}; // namespace android
-
-#endif // ANDROID_GGL_RASTER_H
diff --git a/libpixelflinger/scanline.cpp b/libpixelflinger/scanline.cpp
deleted file mode 100644
index 4cc23c7..0000000
--- a/libpixelflinger/scanline.cpp
+++ /dev/null
@@ -1,2373 +0,0 @@
-/* libs/pixelflinger/scanline.cpp
-**
-** Copyright 2006-2011, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "pixelflinger"
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <cutils/memory.h>
-#include <log/log.h>
-
-#include "buffer.h"
-#include "scanline.h"
-
-#include "codeflinger/CodeCache.h"
-#include "codeflinger/GGLAssembler.h"
-#if defined(__arm__)
-#include "codeflinger/ARMAssembler.h"
-#elif defined(__aarch64__)
-#include "codeflinger/Arm64Assembler.h"
-#elif defined(__mips__) && !defined(__LP64__) && __mips_isa_rev < 6
-#include "codeflinger/MIPSAssembler.h"
-#elif defined(__mips__) && defined(__LP64__)
-#include "codeflinger/MIPS64Assembler.h"
-#endif
-//#include "codeflinger/ARMAssemblerOptimizer.h"
-
-// ----------------------------------------------------------------------------
-
-#define ANDROID_CODEGEN_GENERIC     0   // force generic pixel pipeline
-#define ANDROID_CODEGEN_C           1   // hand-written C, fallback generic 
-#define ANDROID_CODEGEN_ASM         2   // hand-written asm, fallback generic
-#define ANDROID_CODEGEN_GENERATED   3   // hand-written asm, fallback codegen
-
-#ifdef NDEBUG
-#   define ANDROID_RELEASE
-#   define ANDROID_CODEGEN      ANDROID_CODEGEN_GENERATED
-#else
-#   define ANDROID_DEBUG
-#   define ANDROID_CODEGEN      ANDROID_CODEGEN_GENERATED
-#endif
-
-#if defined(__arm__) || (defined(__mips__) && ((!defined(__LP64__) && __mips_isa_rev < 6) || defined(__LP64__))) || defined(__aarch64__)
-#   define ANDROID_ARM_CODEGEN  1
-#else
-#   define ANDROID_ARM_CODEGEN  0
-#endif
-
-#define DEBUG__CODEGEN_ONLY     0
-
-/* Set to 1 to dump to the log the states that need a new
- * code-generated scanline callback, i.e. those that don't
- * have a corresponding shortcut function.
- */
-#define DEBUG_NEEDS  0
-
-#if defined( __mips__) && ((!defined(__LP64__) && __mips_isa_rev < 6) || defined(__LP64__))
-#define ASSEMBLY_SCRATCH_SIZE   4096
-#elif defined(__aarch64__)
-#define ASSEMBLY_SCRATCH_SIZE   8192
-#else
-#define ASSEMBLY_SCRATCH_SIZE   2048
-#endif
-
-// ----------------------------------------------------------------------------
-namespace android {
-// ----------------------------------------------------------------------------
-
-static void init_y(context_t*, int32_t);
-static void init_y_noop(context_t*, int32_t);
-static void init_y_packed(context_t*, int32_t);
-static void init_y_error(context_t*, int32_t);
-
-static void step_y__generic(context_t* c);
-static void step_y__nop(context_t*);
-static void step_y__smooth(context_t* c);
-static void step_y__tmu(context_t* c);
-static void step_y__w(context_t* c);
-
-static void scanline(context_t* c);
-static void scanline_perspective(context_t* c);
-static void scanline_perspective_single(context_t* c);
-static void scanline_t32cb16blend(context_t* c);
-static void scanline_t32cb16blend_dither(context_t* c);
-static void scanline_t32cb16blend_srca(context_t* c);
-static void scanline_t32cb16blend_clamp(context_t* c);
-static void scanline_t32cb16blend_clamp_dither(context_t* c);
-static void scanline_t32cb16blend_clamp_mod(context_t* c);
-static void scanline_x32cb16blend_clamp_mod(context_t* c);
-static void scanline_t32cb16blend_clamp_mod_dither(context_t* c);
-static void scanline_x32cb16blend_clamp_mod_dither(context_t* c);
-static void scanline_t32cb16(context_t* c);
-static void scanline_t32cb16_dither(context_t* c);
-static void scanline_t32cb16_clamp(context_t* c);
-static void scanline_t32cb16_clamp_dither(context_t* c);
-static void scanline_col32cb16blend(context_t* c);
-static void scanline_t16cb16_clamp(context_t* c);
-static void scanline_t16cb16blend_clamp_mod(context_t* c);
-static void scanline_memcpy(context_t* c);
-static void scanline_memset8(context_t* c);
-static void scanline_memset16(context_t* c);
-static void scanline_memset32(context_t* c);
-static void scanline_noop(context_t* c);
-static void scanline_set(context_t* c);
-static void scanline_clear(context_t* c);
-
-static void rect_generic(context_t* c, size_t yc);
-static void rect_memcpy(context_t* c, size_t yc);
-
-#if defined( __arm__)
-extern "C" void scanline_t32cb16blend_arm(uint16_t*, uint32_t*, size_t);
-extern "C" void scanline_t32cb16_arm(uint16_t *dst, uint32_t *src, size_t ct);
-extern "C" void scanline_col32cb16blend_neon(uint16_t *dst, uint32_t *col, size_t ct);
-extern "C" void scanline_col32cb16blend_arm(uint16_t *dst, uint32_t col, size_t ct);
-#elif defined(__aarch64__)
-extern "C" void scanline_t32cb16blend_arm64(uint16_t*, uint32_t*, size_t);
-extern "C" void scanline_col32cb16blend_arm64(uint16_t *dst, uint32_t col, size_t ct);
-#elif defined(__mips__) && !defined(__LP64__) && __mips_isa_rev < 6
-extern "C" void scanline_t32cb16blend_mips(uint16_t*, uint32_t*, size_t);
-#elif defined(__mips__) && defined(__LP64__)
-extern "C" void scanline_t32cb16blend_mips64(uint16_t*, uint32_t*, size_t);
-extern "C" void scanline_col32cb16blend_mips64(uint16_t *dst, uint32_t col, size_t ct);
-#endif
-
-// ----------------------------------------------------------------------------
-
-static inline uint16_t  convertAbgr8888ToRgb565(uint32_t  pix)
-{
-    return uint16_t( ((pix << 8) & 0xf800) |
-                      ((pix >> 5) & 0x07e0) |
-                      ((pix >> 19) & 0x001f) );
-}
-
-struct shortcut_t {
-    needs_filter_t  filter;
-    const char*     desc;
-    void            (*scanline)(context_t*);
-    void            (*init_y)(context_t*, int32_t);
-};
-
-// Keep in sync with needs
-
-/* To understand the values here, have a look at:
- *     system/core/include/private/pixelflinger/ggl_context.h
- *
- * Especially the lines defining and using GGL_RESERVE_NEEDS
- *
- * Quick reminders:
- *   - the last nibble of the first value is the destination buffer format.
- *   - the last nibble of the third value is the source texture format
- *   - formats: 4=rgb565 1=abgr8888 2=xbgr8888
- *
- * In the descriptions below:
- *
- *   SRC      means we copy the source pixels to the destination
- *
- *   SRC_OVER means we blend the source pixels to the destination
- *            with dstFactor = 1-srcA, srcFactor=1  (premultiplied source).
- *            This mode is otherwise called 'blend'.
- *
- *   SRCA_OVER means we blend the source pixels to the destination
- *             with dstFactor=srcA*(1-srcA) srcFactor=srcA (non-premul source).
- *             This mode is otherwise called 'blend_srca'
- *
- *   clamp    means we fetch source pixels from a texture with u/v clamping
- *
- *   mod      means the source pixels are modulated (multiplied) by the
- *            a/r/g/b of the current context's color. Typically used for
- *            fade-in / fade-out.
- *
- *   dither   means we dither 32 bit values to 16 bits
- */
-static shortcut_t shortcuts[] = {
-    { { { 0x03515104, 0x00000077, { 0x00000A01, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, blend SRC_OVER", scanline_t32cb16blend, init_y_noop },
-    { { { 0x03010104, 0x00000077, { 0x00000A01, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC", scanline_t32cb16, init_y_noop  },
-    /* same as first entry, but with dithering */
-    { { { 0x03515104, 0x00000177, { 0x00000A01, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, blend SRC_OVER dither", scanline_t32cb16blend_dither, init_y_noop },
-    /* same as second entry, but with dithering */
-    { { { 0x03010104, 0x00000177, { 0x00000A01, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC dither", scanline_t32cb16_dither, init_y_noop  },
-    /* this is used during the boot animation - CHEAT: ignore dithering */
-    { { { 0x03545404, 0x00000077, { 0x00000A01, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFEFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, blend dst:ONE_MINUS_SRCA src:SRCA", scanline_t32cb16blend_srca, init_y_noop },
-    /* special case for arbitrary texture coordinates (think scaling) */
-    { { { 0x03515104, 0x00000077, { 0x00000001, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC_OVER clamp", scanline_t32cb16blend_clamp, init_y },
-    { { { 0x03515104, 0x00000177, { 0x00000001, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC_OVER clamp dither", scanline_t32cb16blend_clamp_dither, init_y },
-    /* another case used during emulation */
-    { { { 0x03515104, 0x00000077, { 0x00001001, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC_OVER clamp modulate", scanline_t32cb16blend_clamp_mod, init_y },
-    /* and this */
-    { { { 0x03515104, 0x00000077, { 0x00001002, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, x888 tx, SRC_OVER clamp modulate", scanline_x32cb16blend_clamp_mod, init_y },
-    { { { 0x03515104, 0x00000177, { 0x00001001, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC_OVER clamp modulate dither", scanline_t32cb16blend_clamp_mod_dither, init_y },
-    { { { 0x03515104, 0x00000177, { 0x00001002, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, x888 tx, SRC_OVER clamp modulate dither", scanline_x32cb16blend_clamp_mod_dither, init_y },
-    { { { 0x03010104, 0x00000077, { 0x00000001, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC clamp", scanline_t32cb16_clamp, init_y  },
-    { { { 0x03010104, 0x00000077, { 0x00000002, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, x888 tx, SRC clamp", scanline_t32cb16_clamp, init_y  },
-    { { { 0x03010104, 0x00000177, { 0x00000001, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 8888 tx, SRC clamp dither", scanline_t32cb16_clamp_dither, init_y  },
-    { { { 0x03010104, 0x00000177, { 0x00000002, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, x888 tx, SRC clamp dither", scanline_t32cb16_clamp_dither, init_y  },
-    { { { 0x03010104, 0x00000077, { 0x00000004, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 565 tx, SRC clamp", scanline_t16cb16_clamp, init_y  },
-    { { { 0x03515104, 0x00000077, { 0x00001004, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
-        "565 fb, 565 tx, SRC_OVER clamp", scanline_t16cb16blend_clamp_mod, init_y  },
-    { { { 0x03515104, 0x00000077, { 0x00000000, 0x00000000 } },
-        { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0xFFFFFFFF } } },
-        "565 fb, 8888 fixed color", scanline_col32cb16blend, init_y_packed  },  
-    { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } },
-        { 0x00000000, 0x00000007, { 0x00000000, 0x00000000 } } },
-        "(nop) alpha test", scanline_noop, init_y_noop },
-    { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } },
-        { 0x00000000, 0x00000070, { 0x00000000, 0x00000000 } } },
-        "(nop) depth test", scanline_noop, init_y_noop },
-    { { { 0x05000000, 0x00000000, { 0x00000000, 0x00000000 } },
-        { 0x0F000000, 0x00000080, { 0x00000000, 0x00000000 } } },
-        "(nop) logic_op", scanline_noop, init_y_noop },
-    { { { 0xF0000000, 0x00000000, { 0x00000000, 0x00000000 } },
-        { 0xF0000000, 0x00000080, { 0x00000000, 0x00000000 } } },
-        "(nop) color mask", scanline_noop, init_y_noop },
-    { { { 0x0F000000, 0x00000077, { 0x00000000, 0x00000000 } },
-        { 0xFF000000, 0x000000F7, { 0x00000000, 0x00000000 } } },
-        "(set) logic_op", scanline_set, init_y_noop },
-    { { { 0x00000000, 0x00000077, { 0x00000000, 0x00000000 } },
-        { 0xFF000000, 0x000000F7, { 0x00000000, 0x00000000 } } },
-        "(clear) logic_op", scanline_clear, init_y_noop },
-    { { { 0x03000000, 0x00000077, { 0x00000000, 0x00000000 } },
-        { 0xFFFFFF00, 0x000000F7, { 0x00000000, 0x00000000 } } },
-        "(clear) blending 0/0", scanline_clear, init_y_noop },
-    { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } },
-        { 0x0000003F, 0x00000000, { 0x00000000, 0x00000000 } } },
-        "(error) invalid color-buffer format", scanline_noop, init_y_error },
-};
-static const needs_filter_t noblend1to1 = {
-        // (disregard dithering, see below)
-        { 0x03010100, 0x00000077, { 0x00000A00, 0x00000000 } },
-        { 0xFFFFFFC0, 0xFFFFFEFF, { 0xFFFFFFC0, 0x0000003F } }
-};
-static  const needs_filter_t fill16noblend = {
-        { 0x03010100, 0x00000077, { 0x00000000, 0x00000000 } },
-        { 0xFFFFFFC0, 0xFFFFFFFF, { 0x0000003F, 0x0000003F } }
-};
-
-// ----------------------------------------------------------------------------
-
-#if ANDROID_ARM_CODEGEN
-
-#if defined(__mips__) && ((!defined(__LP64__) && __mips_isa_rev < 6) || defined(__LP64__))
-static CodeCache gCodeCache(32 * 1024);
-#elif defined(__aarch64__)
-static CodeCache gCodeCache(48 * 1024);
-#else
-static CodeCache gCodeCache(12 * 1024);
-#endif
-
-class ScanlineAssembly : public Assembly {
-    AssemblyKey<needs_t> mKey;
-public:
-    ScanlineAssembly(needs_t needs, size_t size)
-        : Assembly(size), mKey(needs) { }
-    const AssemblyKey<needs_t>& key() const { return mKey; }
-};
-#endif
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_scanline(context_t* c)
-{
-    c->init_y = init_y;
-    c->step_y = step_y__generic;
-    c->scanline = scanline;
-}
-
-void ggl_uninit_scanline(context_t* c)
-{
-    if (c->state.buffers.coverage)
-        free(c->state.buffers.coverage);
-#if ANDROID_ARM_CODEGEN
-    if (c->scanline_as)
-        c->scanline_as->decStrong(c);
-#endif
-}
-
-// ----------------------------------------------------------------------------
-
-static void pick_scanline(context_t* c)
-{
-#if (!defined(DEBUG__CODEGEN_ONLY) || (DEBUG__CODEGEN_ONLY == 0))
-
-#if ANDROID_CODEGEN == ANDROID_CODEGEN_GENERIC
-    c->init_y = init_y;
-    c->step_y = step_y__generic;
-    c->scanline = scanline;
-    return;
-#endif
-
-    //printf("*** needs [%08lx:%08lx:%08lx:%08lx]\n",
-    //    c->state.needs.n, c->state.needs.p,
-    //    c->state.needs.t[0], c->state.needs.t[1]);
-
-    // first handle the special case that we cannot test with a filter
-    const uint32_t cb_format = GGL_READ_NEEDS(CB_FORMAT, c->state.needs.n);
-    if (GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0]) == cb_format) {
-        if (c->state.needs.match(noblend1to1)) {
-            // this will match regardless of dithering state, since both
-            // src and dest have the same format anyway, there is no dithering
-            // to be done.
-            const GGLFormat* f =
-                &(c->formats[GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0])]);
-            if ((f->components == GGL_RGB) ||
-                (f->components == GGL_RGBA) ||
-                (f->components == GGL_LUMINANCE) ||
-                (f->components == GGL_LUMINANCE_ALPHA))
-            {
-                // format must have all of RGB components
-                // (so the current color doesn't show through)
-                c->scanline = scanline_memcpy;
-                c->init_y = init_y_noop;
-                return;
-            }
-        }
-    }
-
-    if (c->state.needs.match(fill16noblend)) {
-        c->init_y = init_y_packed;
-        switch (c->formats[cb_format].size) {
-        case 1: c->scanline = scanline_memset8;  return;
-        case 2: c->scanline = scanline_memset16; return;
-        case 4: c->scanline = scanline_memset32; return;
-        }
-    }
-
-    const int numFilters = sizeof(shortcuts)/sizeof(shortcut_t);
-    for (int i=0 ; i<numFilters ; i++) {
-        if (c->state.needs.match(shortcuts[i].filter)) {
-            c->scanline = shortcuts[i].scanline;
-            c->init_y = shortcuts[i].init_y;
-            return;
-        }
-    }
-
-#if DEBUG_NEEDS
-    ALOGI("Needs: n=0x%08x p=0x%08x t0=0x%08x t1=0x%08x",
-         c->state.needs.n, c->state.needs.p,
-         c->state.needs.t[0], c->state.needs.t[1]);
-#endif
-
-#endif // DEBUG__CODEGEN_ONLY
-
-    c->init_y = init_y;
-    c->step_y = step_y__generic;
-
-#if ANDROID_ARM_CODEGEN
-    // we're going to have to generate some code...
-    // here, generate code for our pixel pipeline
-    const AssemblyKey<needs_t> key(c->state.needs);
-    sp<Assembly> assembly = gCodeCache.lookup(key);
-    if (assembly == 0) {
-        // create a new assembly region
-        sp<ScanlineAssembly> a = new ScanlineAssembly(c->state.needs, 
-                ASSEMBLY_SCRATCH_SIZE);
-        // initialize our assembler
-#if defined(__arm__)
-        GGLAssembler assembler( new ARMAssembler(a) );
-        //GGLAssembler assembler(
-        //        new ARMAssemblerOptimizer(new ARMAssembler(a)) );
-#endif
-#if defined(__mips__) && !defined(__LP64__) && __mips_isa_rev < 6
-        GGLAssembler assembler( new ArmToMipsAssembler(a) );
-#elif defined(__mips__) && defined(__LP64__)
-        GGLAssembler assembler( new ArmToMips64Assembler(a) );
-#elif defined(__aarch64__)
-        GGLAssembler assembler( new ArmToArm64Assembler(a) );
-#endif
-        // generate the scanline code for the given needs
-        bool err = assembler.scanline(c->state.needs, c) != 0;
-        if (ggl_likely(!err)) {
-            // finally, cache this assembly
-            err = gCodeCache.cache(a->key(), a) < 0;
-        }
-        if (ggl_unlikely(err)) {
-            ALOGE("error generating or caching assembly. Reverting to NOP.");
-            c->scanline = scanline_noop;
-            c->init_y = init_y_noop;
-            c->step_y = step_y__nop;
-            return;
-        }
-        assembly = a;
-    }
-
-    // release the previous assembly
-    if (c->scanline_as) {
-        c->scanline_as->decStrong(c);
-    }
-
-    //ALOGI("using generated pixel-pipeline");
-    c->scanline_as = assembly.get();
-    c->scanline_as->incStrong(c); //  hold on to assembly
-    c->scanline = (void(*)(context_t* c))assembly->base();
-#else
-//    ALOGW("using generic (slow) pixel-pipeline");
-    c->scanline = scanline;
-#endif
-}
-
-void ggl_pick_scanline(context_t* c)
-{
-    pick_scanline(c);
-    if ((c->state.enables & GGL_ENABLE_W) &&
-        (c->state.enables & GGL_ENABLE_TMUS))
-    {
-        c->span = c->scanline;
-        c->scanline = scanline_perspective;
-        if (!(c->state.enabled_tmu & (c->state.enabled_tmu - 1))) {
-            // only one TMU enabled
-            c->scanline = scanline_perspective_single;
-        }
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-static void blending(context_t* c, pixel_t* fragment, pixel_t* fb);
-static void blend_factor(context_t* c, pixel_t* r, uint32_t factor,
-        const pixel_t* src, const pixel_t* dst);
-static void rescale(uint32_t& u, uint8_t& su, uint32_t& v, uint8_t& sv);
-
-#if ANDROID_ARM_CODEGEN && (ANDROID_CODEGEN == ANDROID_CODEGEN_GENERATED)
-
-// no need to compile the generic-pipeline, it can't be reached
-void scanline(context_t*)
-{
-}
-
-#else
-
-void rescale(uint32_t& u, uint8_t& su, uint32_t& v, uint8_t& sv)
-{
-    if (su && sv) {
-        if (su > sv) {
-            v = ggl_expand(v, sv, su);
-            sv = su;
-        } else if (su < sv) {
-            u = ggl_expand(u, su, sv);
-            su = sv;
-        }
-    }
-}
-
-void blending(context_t* c, pixel_t* fragment, pixel_t* fb)
-{
-    rescale(fragment->c[0], fragment->s[0], fb->c[0], fb->s[0]);
-    rescale(fragment->c[1], fragment->s[1], fb->c[1], fb->s[1]);
-    rescale(fragment->c[2], fragment->s[2], fb->c[2], fb->s[2]);
-    rescale(fragment->c[3], fragment->s[3], fb->c[3], fb->s[3]);
-
-    pixel_t sf, df;
-    blend_factor(c, &sf, c->state.blend.src, fragment, fb);
-    blend_factor(c, &df, c->state.blend.dst, fragment, fb);
-
-    fragment->c[1] =
-            gglMulAddx(fragment->c[1], sf.c[1], gglMulx(fb->c[1], df.c[1]));
-    fragment->c[2] =
-            gglMulAddx(fragment->c[2], sf.c[2], gglMulx(fb->c[2], df.c[2]));
-    fragment->c[3] =
-            gglMulAddx(fragment->c[3], sf.c[3], gglMulx(fb->c[3], df.c[3]));
-
-    if (c->state.blend.alpha_separate) {
-        blend_factor(c, &sf, c->state.blend.src_alpha, fragment, fb);
-        blend_factor(c, &df, c->state.blend.dst_alpha, fragment, fb);
-    }
-
-    fragment->c[0] =
-            gglMulAddx(fragment->c[0], sf.c[0], gglMulx(fb->c[0], df.c[0]));
-
-    // clamp to 1.0
-    if (fragment->c[0] >= (1LU<<fragment->s[0]))
-        fragment->c[0] = (1<<fragment->s[0])-1;
-    if (fragment->c[1] >= (1LU<<fragment->s[1]))
-        fragment->c[1] = (1<<fragment->s[1])-1;
-    if (fragment->c[2] >= (1LU<<fragment->s[2]))
-        fragment->c[2] = (1<<fragment->s[2])-1;
-    if (fragment->c[3] >= (1LU<<fragment->s[3]))
-        fragment->c[3] = (1<<fragment->s[3])-1;
-}
-
-static inline int blendfactor(uint32_t x, uint32_t size, uint32_t def = 0)
-{
-    if (!size)
-        return def;
-
-    // scale to 16 bits
-    if (size > 16) {
-        x >>= (size - 16);
-    } else if (size < 16) {
-        x = ggl_expand(x, size, 16);
-    }
-    x += x >> 15;
-    return x;
-}
-
-void blend_factor(context_t* /*c*/, pixel_t* r, 
-        uint32_t factor, const pixel_t* src, const pixel_t* dst)
-{
-    switch (factor) {
-        case GGL_ZERO:
-            r->c[1] = 
-            r->c[2] = 
-            r->c[3] = 
-            r->c[0] = 0;
-            break;
-        case GGL_ONE:
-            r->c[1] = 
-            r->c[2] = 
-            r->c[3] = 
-            r->c[0] = FIXED_ONE;
-            break;
-        case GGL_DST_COLOR:
-            r->c[1] = blendfactor(dst->c[1], dst->s[1]);
-            r->c[2] = blendfactor(dst->c[2], dst->s[2]);
-            r->c[3] = blendfactor(dst->c[3], dst->s[3]);
-            r->c[0] = blendfactor(dst->c[0], dst->s[0]);
-            break;
-        case GGL_SRC_COLOR:
-            r->c[1] = blendfactor(src->c[1], src->s[1]);
-            r->c[2] = blendfactor(src->c[2], src->s[2]);
-            r->c[3] = blendfactor(src->c[3], src->s[3]);
-            r->c[0] = blendfactor(src->c[0], src->s[0]);
-            break;
-        case GGL_ONE_MINUS_DST_COLOR:
-            r->c[1] = FIXED_ONE - blendfactor(dst->c[1], dst->s[1]);
-            r->c[2] = FIXED_ONE - blendfactor(dst->c[2], dst->s[2]);
-            r->c[3] = FIXED_ONE - blendfactor(dst->c[3], dst->s[3]);
-            r->c[0] = FIXED_ONE - blendfactor(dst->c[0], dst->s[0]);
-            break;
-        case GGL_ONE_MINUS_SRC_COLOR:
-            r->c[1] = FIXED_ONE - blendfactor(src->c[1], src->s[1]);
-            r->c[2] = FIXED_ONE - blendfactor(src->c[2], src->s[2]);
-            r->c[3] = FIXED_ONE - blendfactor(src->c[3], src->s[3]);
-            r->c[0] = FIXED_ONE - blendfactor(src->c[0], src->s[0]);
-            break;
-        case GGL_SRC_ALPHA:
-            r->c[1] = 
-            r->c[2] = 
-            r->c[3] = 
-            r->c[0] = blendfactor(src->c[0], src->s[0], FIXED_ONE);
-            break;
-        case GGL_ONE_MINUS_SRC_ALPHA:
-            r->c[1] = 
-            r->c[2] = 
-            r->c[3] = 
-            r->c[0] = FIXED_ONE - blendfactor(src->c[0], src->s[0], FIXED_ONE);
-            break;
-        case GGL_DST_ALPHA:
-            r->c[1] = 
-            r->c[2] = 
-            r->c[3] = 
-            r->c[0] = blendfactor(dst->c[0], dst->s[0], FIXED_ONE);
-            break;
-        case GGL_ONE_MINUS_DST_ALPHA:
-            r->c[1] = 
-            r->c[2] = 
-            r->c[3] = 
-            r->c[0] = FIXED_ONE - blendfactor(dst->c[0], dst->s[0], FIXED_ONE);
-            break;
-        case GGL_SRC_ALPHA_SATURATE:
-            // XXX: GGL_SRC_ALPHA_SATURATE
-            break;
-    }
-}
-
-static GGLfixed wrapping(int32_t coord, uint32_t size, int tx_wrap)
-{
-    GGLfixed d;
-    if (tx_wrap == GGL_REPEAT) {
-        d = (uint32_t(coord)>>16) * size;
-    } else if (tx_wrap == GGL_CLAMP) { // CLAMP_TO_EDGE semantics
-        const GGLfixed clamp_min = FIXED_HALF;
-        const GGLfixed clamp_max = (size << 16) - FIXED_HALF;
-        if (coord < clamp_min)     coord = clamp_min;
-        if (coord > clamp_max)     coord = clamp_max;
-        d = coord;
-    } else { // 1:1
-        const GGLfixed clamp_min = 0;
-        const GGLfixed clamp_max = (size << 16);
-        if (coord < clamp_min)     coord = clamp_min;
-        if (coord > clamp_max)     coord = clamp_max;
-        d = coord;
-    }
-    return d;
-}
-
-static inline
-GGLcolor ADJUST_COLOR_ITERATOR(GGLcolor v, GGLcolor dvdx, int len)
-{
-    const int32_t end = dvdx * (len-1) + v;
-    if (end < 0)
-        v -= end;
-    v &= ~(v>>31);
-    return v;
-}
-
-void scanline(context_t* c)
-{
-    const uint32_t enables = c->state.enables;
-    const int xs = c->iterators.xl;
-    const int x1 = c->iterators.xr;
-	int xc = x1 - xs;
-    const int16_t* covPtr = c->state.buffers.coverage + xs;
-
-    // All iterated values are sampled at the pixel center
-
-    // reset iterators for that scanline...
-    GGLcolor r, g, b, a;
-    iterators_t& ci = c->iterators;
-    if (enables & GGL_ENABLE_SMOOTH) {
-        r = (xs * c->shade.drdx) + ci.ydrdy;
-        g = (xs * c->shade.dgdx) + ci.ydgdy;
-        b = (xs * c->shade.dbdx) + ci.ydbdy;
-        a = (xs * c->shade.dadx) + ci.ydady;
-        r = ADJUST_COLOR_ITERATOR(r, c->shade.drdx, xc);
-        g = ADJUST_COLOR_ITERATOR(g, c->shade.dgdx, xc);
-        b = ADJUST_COLOR_ITERATOR(b, c->shade.dbdx, xc);
-        a = ADJUST_COLOR_ITERATOR(a, c->shade.dadx, xc);
-    } else {
-        r = ci.ydrdy;
-        g = ci.ydgdy;
-        b = ci.ydbdy;
-        a = ci.ydady;
-    }
-
-    // z iterators are 1.31
-    GGLfixed z = (xs * c->shade.dzdx) + ci.ydzdy;
-    GGLfixed f = (xs * c->shade.dfdx) + ci.ydfdy;
-
-    struct {
-        GGLfixed s, t;
-    } tc[GGL_TEXTURE_UNIT_COUNT];
-    if (enables & GGL_ENABLE_TMUS) {
-        for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-            if (c->state.texture[i].enable) {
-                texture_iterators_t& ti = c->state.texture[i].iterators;
-                if (enables & GGL_ENABLE_W) {
-                    tc[i].s = ti.ydsdy;
-                    tc[i].t = ti.ydtdy;
-                } else {
-                    tc[i].s = (xs * ti.dsdx) + ti.ydsdy;
-                    tc[i].t = (xs * ti.dtdx) + ti.ydtdy;
-                }
-            }
-        }
-    }
-
-    pixel_t fragment;
-    pixel_t texel;
-    pixel_t fb;
-
-	uint32_t x = xs;
-	uint32_t y = c->iterators.y;
-
-	while (xc--) {
-    
-        { // just a scope
-
-		// read color (convert to 8 bits by keeping only the integer part)
-        fragment.s[1] = fragment.s[2] =
-        fragment.s[3] = fragment.s[0] = 8;
-        fragment.c[1] = r >> (GGL_COLOR_BITS-8);
-        fragment.c[2] = g >> (GGL_COLOR_BITS-8);
-        fragment.c[3] = b >> (GGL_COLOR_BITS-8);
-        fragment.c[0] = a >> (GGL_COLOR_BITS-8);
-
-		// texturing
-        if (enables & GGL_ENABLE_TMUS) {
-            for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-                texture_t& tx = c->state.texture[i];
-                if (!tx.enable)
-                    continue;
-                texture_iterators_t& ti = tx.iterators;
-                int32_t u, v;
-
-                // s-coordinate
-                if (tx.s_coord != GGL_ONE_TO_ONE) {
-                    const int w = tx.surface.width;
-                    u = wrapping(tc[i].s, w, tx.s_wrap);
-                    tc[i].s += ti.dsdx;
-                } else {
-                    u = (((tx.shade.is0>>16) + x)<<16) + FIXED_HALF;
-                }
-
-                // t-coordinate
-                if (tx.t_coord != GGL_ONE_TO_ONE) {
-                    const int h = tx.surface.height;
-                    v = wrapping(tc[i].t, h, tx.t_wrap);
-                    tc[i].t += ti.dtdx;
-                } else {
-                    v = (((tx.shade.it0>>16) + y)<<16) + FIXED_HALF;
-                }
-
-                // read texture
-                if (tx.mag_filter == GGL_NEAREST &&
-                    tx.min_filter == GGL_NEAREST)
-                {
-                    u >>= 16;
-                    v >>= 16;
-                    tx.surface.read(&tx.surface, c, u, v, &texel);
-                } else {
-                    const int w = tx.surface.width;
-                    const int h = tx.surface.height;
-                    u -= FIXED_HALF;
-                    v -= FIXED_HALF;
-                    int u0 = u >> 16;
-                    int v0 = v >> 16;
-                    int u1 = u0 + 1;
-                    int v1 = v0 + 1;
-                    if (tx.s_wrap == GGL_REPEAT) {
-                        if (u0<0)  u0 += w;
-                        if (u1<0)  u1 += w;
-                        if (u0>=w) u0 -= w;
-                        if (u1>=w) u1 -= w;
-                    } else {
-                        if (u0<0)  u0 = 0;
-                        if (u1<0)  u1 = 0;
-                        if (u0>=w) u0 = w-1;
-                        if (u1>=w) u1 = w-1;
-                    }
-                    if (tx.t_wrap == GGL_REPEAT) {
-                        if (v0<0)  v0 += h;
-                        if (v1<0)  v1 += h;
-                        if (v0>=h) v0 -= h;
-                        if (v1>=h) v1 -= h;
-                    } else {
-                        if (v0<0)  v0 = 0;
-                        if (v1<0)  v1 = 0;
-                        if (v0>=h) v0 = h-1;
-                        if (v1>=h) v1 = h-1;
-                    }
-                    pixel_t texels[4];
-                    uint32_t mm[4];
-                    tx.surface.read(&tx.surface, c, u0, v0, &texels[0]);
-                    tx.surface.read(&tx.surface, c, u0, v1, &texels[1]);
-                    tx.surface.read(&tx.surface, c, u1, v0, &texels[2]);
-                    tx.surface.read(&tx.surface, c, u1, v1, &texels[3]);
-                    u = (u >> 12) & 0xF; 
-                    v = (v >> 12) & 0xF;
-                    u += u>>3;
-                    v += v>>3;
-                    mm[0] = (0x10 - u) * (0x10 - v);
-                    mm[1] = (0x10 - u) * v;
-                    mm[2] = u * (0x10 - v);
-                    mm[3] = 0x100 - (mm[0] + mm[1] + mm[2]);
-                    for (int j=0 ; j<4 ; j++) {
-                        texel.s[j] = texels[0].s[j];
-                        if (!texel.s[j]) continue;
-                        texel.s[j] += 8;
-                        texel.c[j] =    texels[0].c[j]*mm[0] +
-                                        texels[1].c[j]*mm[1] +
-                                        texels[2].c[j]*mm[2] +
-                                        texels[3].c[j]*mm[3] ;
-                    }
-                }
-
-                // Texture environnement...
-                for (int j=0 ; j<4 ; j++) {
-                    uint32_t& Cf = fragment.c[j];
-                    uint32_t& Ct = texel.c[j];
-                    uint8_t& sf  = fragment.s[j];
-                    uint8_t& st  = texel.s[j];
-                    uint32_t At = texel.c[0];
-                    uint8_t sat = texel.s[0];
-                    switch (tx.env) {
-                    case GGL_REPLACE:
-                        if (st) {
-                            Cf = Ct;
-                            sf = st;
-                        }
-                        break;
-                    case GGL_MODULATE:
-                        if (st) {
-                            uint32_t factor = Ct + (Ct>>(st-1));
-                            Cf = (Cf * factor) >> st;
-                        }
-                        break;
-                    case GGL_DECAL:
-                        if (sat) {
-                            rescale(Cf, sf, Ct, st);
-                            Cf += ((Ct - Cf) * (At + (At>>(sat-1)))) >> sat;
-                        }
-                        break;
-                    case GGL_BLEND:
-                        if (st) {
-                            uint32_t Cc = tx.env_color[i];
-                            if (sf>8)       Cc = (Cc * ((1<<sf)-1))>>8;
-                            else if (sf<8)  Cc = (Cc - (Cc>>(8-sf)))>>(8-sf);
-                            uint32_t factor = Ct + (Ct>>(st-1));
-                            Cf = ((((1<<st) - factor) * Cf) + Ct*Cc)>>st;
-                        }
-                        break;
-                    case GGL_ADD:
-                        if (st) {
-                            rescale(Cf, sf, Ct, st);
-                            Cf += Ct;
-                        }
-                        break;
-                    }
-                }
-            }
-		}
-    
-        // coverage application
-        if (enables & GGL_ENABLE_AA) {
-            int16_t cf = *covPtr++;
-            fragment.c[0] = (int64_t(fragment.c[0]) * cf) >> 15;
-        }
-        
-        // alpha-test
-        if (enables & GGL_ENABLE_ALPHA_TEST) {
-            GGLcolor ref = c->state.alpha_test.ref;
-            GGLcolor alpha = (uint64_t(fragment.c[0]) *
-                    ((1<<GGL_COLOR_BITS)-1)) / ((1<<fragment.s[0])-1);
-            switch (c->state.alpha_test.func) {
-            case GGL_NEVER:     goto discard;
-            case GGL_LESS:      if (alpha<ref)  break; goto discard;
-            case GGL_EQUAL:     if (alpha==ref) break; goto discard;
-            case GGL_LEQUAL:    if (alpha<=ref) break; goto discard;
-            case GGL_GREATER:   if (alpha>ref)  break; goto discard;
-            case GGL_NOTEQUAL:  if (alpha!=ref) break; goto discard;
-            case GGL_GEQUAL:    if (alpha>=ref) break; goto discard;
-            }
-        }
-        
-        // depth test
-        if (c->state.buffers.depth.format) {
-            if (enables & GGL_ENABLE_DEPTH_TEST) {
-                surface_t* cb = &(c->state.buffers.depth);
-                uint16_t* p = (uint16_t*)(cb->data)+(x+(cb->stride*y));
-                uint16_t zz = uint32_t(z)>>(16);
-                uint16_t depth = *p;
-                switch (c->state.depth_test.func) {
-                case GGL_NEVER:     goto discard;
-                case GGL_LESS:      if (zz<depth)    break; goto discard;
-                case GGL_EQUAL:     if (zz==depth)   break; goto discard;
-                case GGL_LEQUAL:    if (zz<=depth)   break; goto discard;
-                case GGL_GREATER:   if (zz>depth)    break; goto discard;
-                case GGL_NOTEQUAL:  if (zz!=depth)   break; goto discard;
-                case GGL_GEQUAL:    if (zz>=depth)   break; goto discard;
-                }
-                // depth buffer is not enabled, if depth-test is not enabled
-/*
-        fragment.s[1] = fragment.s[2] =
-        fragment.s[3] = fragment.s[0] = 8;
-        fragment.c[1] = 
-        fragment.c[2] = 
-        fragment.c[3] = 
-        fragment.c[0] = 255 - (zz>>8);
-*/
-                if (c->state.mask.depth) {
-                    *p = zz;
-                }
-            }
-        }
-
-        // fog
-        if (enables & GGL_ENABLE_FOG) {
-            for (int i=1 ; i<=3 ; i++) {
-                GGLfixed fc = (c->state.fog.color[i] * 0x10000) / 0xFF;
-                uint32_t& c = fragment.c[i];
-                uint8_t& s  = fragment.s[i];
-                c = (c * 0x10000) / ((1<<s)-1);
-                c = gglMulAddx(c, f, gglMulx(fc, 0x10000 - f));
-                s = 16;
-            }
-        }
-
-        // blending
-        if (enables & GGL_ENABLE_BLENDING) {
-            fb.c[1] = fb.c[2] = fb.c[3] = fb.c[0] = 0; // placate valgrind
-            fb.s[1] = fb.s[2] = fb.s[3] = fb.s[0] = 0;
-            c->state.buffers.color.read(
-                    &(c->state.buffers.color), c, x, y, &fb);
-            blending( c, &fragment, &fb );
-        }
-
-		// write
-        c->state.buffers.color.write(
-                &(c->state.buffers.color), c, x, y, &fragment);
-        }
-
-discard:
-		// iterate...
-        x += 1;
-        if (enables & GGL_ENABLE_SMOOTH) {
-            r += c->shade.drdx;
-            g += c->shade.dgdx;
-            b += c->shade.dbdx;
-            a += c->shade.dadx;
-        }
-        z += c->shade.dzdx;
-        f += c->shade.dfdx;
-	}
-}
-
-#endif // ANDROID_ARM_CODEGEN && (ANDROID_CODEGEN == ANDROID_CODEGEN_GENERATED)
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Scanline
-#endif
-
-/* Used to parse a 32-bit source texture linearly. Usage is:
- *
- * horz_iterator32  hi(context);
- * while (...) {
- *    uint32_t  src_pixel = hi.get_pixel32();
- *    ...
- * }
- *
- * Use only for one-to-one texture mapping.
- */
-struct horz_iterator32 {
-    explicit horz_iterator32(context_t* c) {
-        const int x = c->iterators.xl;
-        const int y = c->iterators.y;
-        texture_t& tx = c->state.texture[0];
-        const int32_t u = (tx.shade.is0>>16) + x;
-        const int32_t v = (tx.shade.it0>>16) + y;
-        m_src = reinterpret_cast<uint32_t*>(tx.surface.data)+(u+(tx.surface.stride*v));
-    }
-    uint32_t  get_pixel32() {
-        return *m_src++;
-    }
-protected:
-    uint32_t* m_src;
-};
-
-/* A variant for 16-bit source textures. */
-struct horz_iterator16 {
-    explicit horz_iterator16(context_t* c) {
-        const int x = c->iterators.xl;
-        const int y = c->iterators.y;
-        texture_t& tx = c->state.texture[0];
-        const int32_t u = (tx.shade.is0>>16) + x;
-        const int32_t v = (tx.shade.it0>>16) + y;
-        m_src = reinterpret_cast<uint16_t*>(tx.surface.data)+(u+(tx.surface.stride*v));
-    }
-    uint16_t  get_pixel16() {
-        return *m_src++;
-    }
-protected:
-    uint16_t* m_src;
-};
-
-/* A clamp iterator is used to iterate inside a texture with GGL_CLAMP.
- * After initialization, call get_src16() or get_src32() to get the current
- * texture pixel value.
- */
-struct clamp_iterator {
-    explicit clamp_iterator(context_t* c) {
-        const int xs = c->iterators.xl;
-        texture_t& tx = c->state.texture[0];
-        texture_iterators_t& ti = tx.iterators;
-        m_s = (xs * ti.dsdx) + ti.ydsdy;
-        m_t = (xs * ti.dtdx) + ti.ydtdy;
-        m_ds = ti.dsdx;
-        m_dt = ti.dtdx;
-        m_width_m1 = tx.surface.width - 1;
-        m_height_m1 = tx.surface.height - 1;
-        m_data = tx.surface.data;
-        m_stride = tx.surface.stride;
-    }
-    uint16_t get_pixel16() {
-        int  u, v;
-        get_uv(u, v);
-        uint16_t* src = reinterpret_cast<uint16_t*>(m_data) + (u + (m_stride*v));
-        return src[0];
-    }
-    uint32_t get_pixel32() {
-        int  u, v;
-        get_uv(u, v);
-        uint32_t* src = reinterpret_cast<uint32_t*>(m_data) + (u + (m_stride*v));
-        return src[0];
-    }
-private:
-    void   get_uv(int& u, int& v) {
-        int  uu = m_s >> 16;
-        int  vv = m_t >> 16;
-        if (uu < 0)
-            uu = 0;
-        if (uu > m_width_m1)
-            uu = m_width_m1;
-        if (vv < 0)
-            vv = 0;
-        if (vv > m_height_m1)
-            vv = m_height_m1;
-        u = uu;
-        v = vv;
-        m_s += m_ds;
-        m_t += m_dt;
-    }
-
-    GGLfixed  m_s, m_t;
-    GGLfixed  m_ds, m_dt;
-    int       m_width_m1, m_height_m1;
-    uint8_t*  m_data;
-    int       m_stride;
-};
-
-/*
- * The 'horizontal clamp iterator' variant corresponds to the case where
- * the 'v' coordinate doesn't change. This is useful to avoid one mult and
- * extra adds / checks per pixels, if the blending/processing operation after
- * this is very fast.
- */
-static int is_context_horizontal(const context_t* c) {
-    return (c->state.texture[0].iterators.dtdx == 0);
-}
-
-struct horz_clamp_iterator {
-    uint16_t  get_pixel16() {
-        int  u = m_s >> 16;
-        m_s += m_ds;
-        if (u < 0)
-            u = 0;
-        if (u > m_width_m1)
-            u = m_width_m1;
-        const uint16_t* src = reinterpret_cast<const uint16_t*>(m_data);
-        return src[u];
-    }
-    uint32_t  get_pixel32() {
-        int  u = m_s >> 16;
-        m_s += m_ds;
-        if (u < 0)
-            u = 0;
-        if (u > m_width_m1)
-            u = m_width_m1;
-        const uint32_t* src = reinterpret_cast<const uint32_t*>(m_data);
-        return src[u];
-    }
-protected:
-    void init(const context_t* c, int shift);
-    GGLfixed       m_s;
-    GGLfixed       m_ds;
-    int            m_width_m1;
-    const uint8_t* m_data;
-};
-
-void horz_clamp_iterator::init(const context_t* c, int shift)
-{
-    const int xs = c->iterators.xl;
-    const texture_t& tx = c->state.texture[0];
-    const texture_iterators_t& ti = tx.iterators;
-    m_s = (xs * ti.dsdx) + ti.ydsdy;
-    m_ds = ti.dsdx;
-    m_width_m1 = tx.surface.width-1;
-    m_data = tx.surface.data;
-
-    GGLfixed t = (xs * ti.dtdx) + ti.ydtdy;
-    int      v = t >> 16;
-    if (v < 0)
-        v = 0;
-    else if (v >= (int)tx.surface.height)
-        v = (int)tx.surface.height-1;
-
-    m_data += (tx.surface.stride*v) << shift;
-}
-
-struct horz_clamp_iterator16 : horz_clamp_iterator {
-    explicit horz_clamp_iterator16(const context_t* c) {
-        init(c,1);
-    };
-};
-
-struct horz_clamp_iterator32 : horz_clamp_iterator {
-    explicit horz_clamp_iterator32(context_t* c) {
-        init(c,2);
-    };
-};
-
-/* This is used to perform dithering operations.
- */
-struct ditherer {
-    explicit ditherer(const context_t* c) {
-        const int x = c->iterators.xl;
-        const int y = c->iterators.y;
-        m_line = &c->ditherMatrix[ ((y & GGL_DITHER_MASK)<<GGL_DITHER_ORDER_SHIFT) ];
-        m_index = x & GGL_DITHER_MASK;
-    }
-    void step(void) {
-        m_index++;
-    }
-    int  get_value(void) {
-        int ret = m_line[m_index & GGL_DITHER_MASK];
-        m_index++;
-        return ret;
-    }
-    uint16_t abgr8888ToRgb565(uint32_t s) {
-        uint32_t r = s & 0xff;
-        uint32_t g = (s >> 8) & 0xff;
-        uint32_t b = (s >> 16) & 0xff;
-        return rgb888ToRgb565(r,g,b);
-    }
-    /* The following assumes that r/g/b are in the 0..255 range each */
-    uint16_t rgb888ToRgb565(uint32_t& r, uint32_t& g, uint32_t &b) {
-        int threshold = get_value();
-        /* dither in on GGL_DITHER_BITS, and each of r, g, b is on 8 bits */
-        r += (threshold >> (GGL_DITHER_BITS-8 +5));
-        g += (threshold >> (GGL_DITHER_BITS-8 +6));
-        b += (threshold >> (GGL_DITHER_BITS-8 +5));
-        if (r > 0xff)
-            r = 0xff;
-        if (g > 0xff)
-            g = 0xff;
-        if (b > 0xff)
-            b = 0xff;
-        return uint16_t(((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3));
-    }
-protected:
-    const uint8_t* m_line;
-    int            m_index;
-};
-
-/* This structure is used to blend (SRC_OVER) 32-bit source pixels
- * onto 16-bit destination ones. Usage is simply:
- *
- *   blender.blend(<32-bit-src-pixel-value>,<ptr-to-16-bit-dest-pixel>)
- */
-struct blender_32to16 {
-    explicit blender_32to16(context_t* /*c*/) { }
-    void write(uint32_t s, uint16_t* dst) {
-        if (s == 0)
-            return;
-        s = GGL_RGBA_TO_HOST(s);
-        int sA = (s>>24);
-        if (sA == 0xff) {
-            *dst = convertAbgr8888ToRgb565(s);
-        } else {
-            int f = 0x100 - (sA + (sA>>7));
-            int sR = (s >> (   3))&0x1F;
-            int sG = (s >> ( 8+2))&0x3F;
-            int sB = (s >> (16+3))&0x1F;
-            uint16_t d = *dst;
-            int dR = (d>>11)&0x1f;
-            int dG = (d>>5)&0x3f;
-            int dB = (d)&0x1f;
-            sR += (f*dR)>>8;
-            sG += (f*dG)>>8;
-            sB += (f*dB)>>8;
-            *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-        }
-    }
-    void write(uint32_t s, uint16_t* dst, ditherer& di) {
-        if (s == 0) {
-            di.step();
-            return;
-        }
-        s = GGL_RGBA_TO_HOST(s);
-        int sA = (s>>24);
-        if (sA == 0xff) {
-            *dst = di.abgr8888ToRgb565(s);
-        } else {
-            int threshold = di.get_value() << (8 - GGL_DITHER_BITS);
-            int f = 0x100 - (sA + (sA>>7));
-            int sR = (s >> (   3))&0x1F;
-            int sG = (s >> ( 8+2))&0x3F;
-            int sB = (s >> (16+3))&0x1F;
-            uint16_t d = *dst;
-            int dR = (d>>11)&0x1f;
-            int dG = (d>>5)&0x3f;
-            int dB = (d)&0x1f;
-            sR = ((sR << 8) + f*dR + threshold)>>8;
-            sG = ((sG << 8) + f*dG + threshold)>>8;
-            sB = ((sB << 8) + f*dB + threshold)>>8;
-            if (sR > 0x1f) sR = 0x1f;
-            if (sG > 0x3f) sG = 0x3f;
-            if (sB > 0x1f) sB = 0x1f;
-            *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-        }
-    }
-};
-
-/* This blender does the same for the 'blend_srca' operation.
- * where dstFactor=srcA*(1-srcA) srcFactor=srcA
- */
-struct blender_32to16_srcA {
-    explicit blender_32to16_srcA(const context_t* /*c*/) { }
-    void write(uint32_t s, uint16_t* dst) {
-        if (!s) {
-            return;
-        }
-        uint16_t d = *dst;
-        s = GGL_RGBA_TO_HOST(s);
-        int sR = (s >> (   3))&0x1F;
-        int sG = (s >> ( 8+2))&0x3F;
-        int sB = (s >> (16+3))&0x1F;
-        int sA = (s>>24);
-        int f1 = (sA + (sA>>7));
-        int f2 = 0x100-f1;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        sR = (f1*sR + f2*dR)>>8;
-        sG = (f1*sG + f2*dG)>>8;
-        sB = (f1*sB + f2*dB)>>8;
-        *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-};
-
-/* Common init code the modulating blenders */
-struct blender_modulate {
-    void init(const context_t* c) {
-        const int r = c->iterators.ydrdy >> (GGL_COLOR_BITS-8);
-        const int g = c->iterators.ydgdy >> (GGL_COLOR_BITS-8);
-        const int b = c->iterators.ydbdy >> (GGL_COLOR_BITS-8);
-        const int a = c->iterators.ydady >> (GGL_COLOR_BITS-8);
-        m_r = r + (r >> 7);
-        m_g = g + (g >> 7);
-        m_b = b + (b >> 7);
-        m_a = a + (a >> 7);
-    }
-protected:
-    int m_r, m_g, m_b, m_a;
-};
-
-/* This blender does a normal blend after modulation.
- */
-struct blender_32to16_modulate : blender_modulate {
-    explicit blender_32to16_modulate(const context_t* c) {
-        init(c);
-    }
-    void write(uint32_t s, uint16_t* dst) {
-        // blend source and destination
-        if (!s) {
-            return;
-        }
-        s = GGL_RGBA_TO_HOST(s);
-
-        /* We need to modulate s */
-        uint32_t  sA = (s >> 24);
-        uint32_t  sB = (s >> 16) & 0xff;
-        uint32_t  sG = (s >> 8) & 0xff;
-        uint32_t  sR = s & 0xff;
-
-        sA = (sA*m_a) >> 8;
-        /* Keep R/G/B scaled to 5.8 or 6.8 fixed float format */
-        sR = (sR*m_r) >> (8 - 5);
-        sG = (sG*m_g) >> (8 - 6);
-        sB = (sB*m_b) >> (8 - 5);
-
-        /* Now do a normal blend */
-        int f = 0x100 - (sA + (sA>>7));
-        uint16_t d = *dst;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        sR = (sR + f*dR)>>8;
-        sG = (sG + f*dG)>>8;
-        sB = (sB + f*dB)>>8;
-        *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-    void write(uint32_t s, uint16_t* dst, ditherer& di) {
-        // blend source and destination
-        if (!s) {
-            di.step();
-            return;
-        }
-        s = GGL_RGBA_TO_HOST(s);
-
-        /* We need to modulate s */
-        uint32_t  sA = (s >> 24);
-        uint32_t  sB = (s >> 16) & 0xff;
-        uint32_t  sG = (s >> 8) & 0xff;
-        uint32_t  sR = s & 0xff;
-
-        sA = (sA*m_a) >> 8;
-        /* keep R/G/B scaled to 5.8 or 6.8 fixed float format */
-        sR = (sR*m_r) >> (8 - 5);
-        sG = (sG*m_g) >> (8 - 6);
-        sB = (sB*m_b) >> (8 - 5);
-
-        /* Scale threshold to 0.8 fixed float format */
-        int threshold = di.get_value() << (8 - GGL_DITHER_BITS);
-        int f = 0x100 - (sA + (sA>>7));
-        uint16_t d = *dst;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        sR = (sR + f*dR + threshold)>>8;
-        sG = (sG + f*dG + threshold)>>8;
-        sB = (sB + f*dB + threshold)>>8;
-        if (sR > 0x1f) sR = 0x1f;
-        if (sG > 0x3f) sG = 0x3f;
-        if (sB > 0x1f) sB = 0x1f;
-        *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-};
-
-/* same as 32to16_modulate, except that the input is xRGB, instead of ARGB */
-struct blender_x32to16_modulate : blender_modulate {
-    explicit blender_x32to16_modulate(const context_t* c) {
-        init(c);
-    }
-    void write(uint32_t s, uint16_t* dst) {
-        s = GGL_RGBA_TO_HOST(s);
-
-        uint32_t  sB = (s >> 16) & 0xff;
-        uint32_t  sG = (s >> 8) & 0xff;
-        uint32_t  sR = s & 0xff;
-
-        /* Keep R/G/B in 5.8 or 6.8 format */
-        sR = (sR*m_r) >> (8 - 5);
-        sG = (sG*m_g) >> (8 - 6);
-        sB = (sB*m_b) >> (8 - 5);
-
-        int f = 0x100 - m_a;
-        uint16_t d = *dst;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        sR = (sR + f*dR)>>8;
-        sG = (sG + f*dG)>>8;
-        sB = (sB + f*dB)>>8;
-        *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-    void write(uint32_t s, uint16_t* dst, ditherer& di) {
-        s = GGL_RGBA_TO_HOST(s);
-
-        uint32_t  sB = (s >> 16) & 0xff;
-        uint32_t  sG = (s >> 8) & 0xff;
-        uint32_t  sR = s & 0xff;
-
-        sR = (sR*m_r) >> (8 - 5);
-        sG = (sG*m_g) >> (8 - 6);
-        sB = (sB*m_b) >> (8 - 5);
-
-        /* Now do a normal blend */
-        int threshold = di.get_value() << (8 - GGL_DITHER_BITS);
-        int f = 0x100 - m_a;
-        uint16_t d = *dst;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        sR = (sR + f*dR + threshold)>>8;
-        sG = (sG + f*dG + threshold)>>8;
-        sB = (sB + f*dB + threshold)>>8;
-        if (sR > 0x1f) sR = 0x1f;
-        if (sG > 0x3f) sG = 0x3f;
-        if (sB > 0x1f) sB = 0x1f;
-        *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-};
-
-/* Same as above, but source is 16bit rgb565 */
-struct blender_16to16_modulate : blender_modulate {
-    explicit blender_16to16_modulate(const context_t* c) {
-        init(c);
-    }
-    void write(uint16_t s16, uint16_t* dst) {
-        uint32_t  s = s16;
-
-        uint32_t  sR = s >> 11;
-        uint32_t  sG = (s >> 5) & 0x3f;
-        uint32_t  sB = s & 0x1f;
-
-        sR = (sR*m_r);
-        sG = (sG*m_g);
-        sB = (sB*m_b);
-
-        int f = 0x100 - m_a;
-        uint16_t d = *dst;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        sR = (sR + f*dR)>>8;
-        sG = (sG + f*dG)>>8;
-        sB = (sB + f*dB)>>8;
-        *dst = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-};
-
-/* This is used to iterate over a 16-bit destination color buffer.
- * Usage is:
- *
- *   dst_iterator16  di(context);
- *   while (di.count--) {
- *       <do stuff with dest pixel at di.dst>
- *       di.dst++;
- *   }
- */
-struct dst_iterator16 {
-    explicit dst_iterator16(const context_t* c) {
-        const int x = c->iterators.xl;
-        const int width = c->iterators.xr - x;
-        const int32_t y = c->iterators.y;
-        const surface_t* cb = &(c->state.buffers.color);
-        count = width;
-        dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-    }
-    int        count;
-    uint16_t*  dst;
-};
-
-
-static void scanline_t32cb16_clamp(context_t* c)
-{
-    dst_iterator16  di(c);
-
-    if (is_context_horizontal(c)) {
-        /* Special case for simple horizontal scaling */
-        horz_clamp_iterator32 ci(c);
-        while (di.count--) {
-            uint32_t s = ci.get_pixel32();
-            *di.dst++ = convertAbgr8888ToRgb565(s);
-        }
-    } else {
-        /* General case */
-        clamp_iterator ci(c);
-        while (di.count--) {
-            uint32_t s = ci.get_pixel32();
-            *di.dst++ = convertAbgr8888ToRgb565(s);
-        }
-    }
-}
-
-static void scanline_t32cb16_dither(context_t* c)
-{
-    horz_iterator32 si(c);
-    dst_iterator16  di(c);
-    ditherer        dither(c);
-
-    while (di.count--) {
-        uint32_t s = si.get_pixel32();
-        *di.dst++ = dither.abgr8888ToRgb565(s);
-    }
-}
-
-static void scanline_t32cb16_clamp_dither(context_t* c)
-{
-    dst_iterator16  di(c);
-    ditherer        dither(c);
-
-    if (is_context_horizontal(c)) {
-        /* Special case for simple horizontal scaling */
-        horz_clamp_iterator32 ci(c);
-        while (di.count--) {
-            uint32_t s = ci.get_pixel32();
-            *di.dst++ = dither.abgr8888ToRgb565(s);
-        }
-    } else {
-        /* General case */
-        clamp_iterator ci(c);
-        while (di.count--) {
-            uint32_t s = ci.get_pixel32();
-            *di.dst++ = dither.abgr8888ToRgb565(s);
-        }
-    }
-}
-
-static void scanline_t32cb16blend_dither(context_t* c)
-{
-    dst_iterator16 di(c);
-    ditherer       dither(c);
-    blender_32to16 bl(c);
-    horz_iterator32  hi(c);
-    while (di.count--) {
-        uint32_t s = hi.get_pixel32();
-        bl.write(s, di.dst, dither);
-        di.dst++;
-    }
-}
-
-static void scanline_t32cb16blend_clamp(context_t* c)
-{
-    dst_iterator16  di(c);
-    blender_32to16  bl(c);
-
-    if (is_context_horizontal(c)) {
-        horz_clamp_iterator32 ci(c);
-        while (di.count--) {
-            uint32_t s = ci.get_pixel32();
-            bl.write(s, di.dst);
-            di.dst++;
-        }
-    } else {
-        clamp_iterator ci(c);
-        while (di.count--) {
-            uint32_t s = ci.get_pixel32();
-            bl.write(s, di.dst);
-            di.dst++;
-        }
-    }
-}
-
-static void scanline_t32cb16blend_clamp_dither(context_t* c)
-{
-    dst_iterator16 di(c);
-    ditherer       dither(c);
-    blender_32to16 bl(c);
-
-    clamp_iterator ci(c);
-    while (di.count--) {
-        uint32_t s = ci.get_pixel32();
-        bl.write(s, di.dst, dither);
-        di.dst++;
-    }
-}
-
-void scanline_t32cb16blend_clamp_mod(context_t* c)
-{
-    dst_iterator16 di(c);
-    blender_32to16_modulate bl(c);
-
-    clamp_iterator ci(c);
-    while (di.count--) {
-        uint32_t s = ci.get_pixel32();
-        bl.write(s, di.dst);
-        di.dst++;
-    }
-}
-
-void scanline_t32cb16blend_clamp_mod_dither(context_t* c)
-{
-    dst_iterator16 di(c);
-    blender_32to16_modulate bl(c);
-    ditherer dither(c);
-
-    clamp_iterator ci(c);
-    while (di.count--) {
-        uint32_t s = ci.get_pixel32();
-        bl.write(s, di.dst, dither);
-        di.dst++;
-    }
-}
-
-/* Variant of scanline_t32cb16blend_clamp_mod with a xRGB texture */
-void scanline_x32cb16blend_clamp_mod(context_t* c)
-{
-    dst_iterator16 di(c);
-    blender_x32to16_modulate  bl(c);
-
-    clamp_iterator ci(c);
-    while (di.count--) {
-        uint32_t s = ci.get_pixel32();
-        bl.write(s, di.dst);
-        di.dst++;
-    }
-}
-
-void scanline_x32cb16blend_clamp_mod_dither(context_t* c)
-{
-    dst_iterator16 di(c);
-    blender_x32to16_modulate  bl(c);
-    ditherer dither(c);
-
-    clamp_iterator ci(c);
-    while (di.count--) {
-        uint32_t s = ci.get_pixel32();
-        bl.write(s, di.dst, dither);
-        di.dst++;
-    }
-}
-
-void scanline_t16cb16_clamp(context_t* c)
-{
-    dst_iterator16  di(c);
-
-    /* Special case for simple horizontal scaling */
-    if (is_context_horizontal(c)) {
-        horz_clamp_iterator16 ci(c);
-        while (di.count--) {
-            *di.dst++ = ci.get_pixel16();
-        }
-    } else {
-        clamp_iterator ci(c);
-        while (di.count--) {
-            *di.dst++ = ci.get_pixel16();
-        }
-    }
-}
-
-
-
-template <typename T, typename U>
-static inline __attribute__((const))
-T interpolate(int y, T v0, U dvdx, U dvdy) {
-    // interpolates in pixel's centers
-    // v = v0 + (y + 0.5) * dvdy + (0.5 * dvdx)
-    return (y * dvdy) + (v0 + ((dvdy + dvdx) >> 1));
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void init_y(context_t* c, int32_t ys)
-{
-    const uint32_t enables = c->state.enables;
-
-    // compute iterators...
-    iterators_t& ci = c->iterators;
-    
-    // sample in the center
-    ci.y = ys;
-
-    if (enables & (GGL_ENABLE_DEPTH_TEST|GGL_ENABLE_W|GGL_ENABLE_FOG)) {
-        ci.ydzdy = interpolate(ys, c->shade.z0, c->shade.dzdx, c->shade.dzdy);
-        ci.ydwdy = interpolate(ys, c->shade.w0, c->shade.dwdx, c->shade.dwdy);
-        ci.ydfdy = interpolate(ys, c->shade.f0, c->shade.dfdx, c->shade.dfdy);
-    }
-
-    if (ggl_unlikely(enables & GGL_ENABLE_SMOOTH)) {
-        ci.ydrdy = interpolate(ys, c->shade.r0, c->shade.drdx, c->shade.drdy);
-        ci.ydgdy = interpolate(ys, c->shade.g0, c->shade.dgdx, c->shade.dgdy);
-        ci.ydbdy = interpolate(ys, c->shade.b0, c->shade.dbdx, c->shade.dbdy);
-        ci.ydady = interpolate(ys, c->shade.a0, c->shade.dadx, c->shade.dady);
-        c->step_y = step_y__smooth;
-    } else {
-        ci.ydrdy = c->shade.r0;
-        ci.ydgdy = c->shade.g0;
-        ci.ydbdy = c->shade.b0;
-        ci.ydady = c->shade.a0;
-        // XXX: do only if needed, or make sure this is fast
-        c->packed = ggl_pack_color(c, c->state.buffers.color.format,
-                ci.ydrdy, ci.ydgdy, ci.ydbdy, ci.ydady);
-        c->packed8888 = ggl_pack_color(c, GGL_PIXEL_FORMAT_RGBA_8888, 
-                ci.ydrdy, ci.ydgdy, ci.ydbdy, ci.ydady);
-    }
-
-    // initialize the variables we need in the shader
-    generated_vars_t& gen = c->generated_vars;
-    gen.argb[GGLFormat::ALPHA].c  = ci.ydady;
-    gen.argb[GGLFormat::ALPHA].dx = c->shade.dadx;
-    gen.argb[GGLFormat::RED  ].c  = ci.ydrdy;
-    gen.argb[GGLFormat::RED  ].dx = c->shade.drdx;
-    gen.argb[GGLFormat::GREEN].c  = ci.ydgdy;
-    gen.argb[GGLFormat::GREEN].dx = c->shade.dgdx;
-    gen.argb[GGLFormat::BLUE ].c  = ci.ydbdy;
-    gen.argb[GGLFormat::BLUE ].dx = c->shade.dbdx;
-    gen.dzdx = c->shade.dzdx;
-    gen.f    = ci.ydfdy;
-    gen.dfdx = c->shade.dfdx;
-
-    if (enables & GGL_ENABLE_TMUS) {
-        for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-            texture_t& t = c->state.texture[i];
-            if (!t.enable) continue;
-
-            texture_iterators_t& ti = t.iterators;
-            if (t.s_coord == GGL_ONE_TO_ONE && t.t_coord == GGL_ONE_TO_ONE) {
-                // we need to set all of these to 0 because in some cases
-                // step_y__generic() or step_y__tmu() will be used and
-                // therefore will update dtdy, however, in 1:1 mode
-                // this is always done by the scanline rasterizer.
-                ti.dsdx = ti.dsdy = ti.dtdx = ti.dtdy = 0;
-                ti.ydsdy = t.shade.is0;
-                ti.ydtdy = t.shade.it0;
-            } else {
-                const int adjustSWrap = ((t.s_wrap==GGL_CLAMP)?0:16);
-                const int adjustTWrap = ((t.t_wrap==GGL_CLAMP)?0:16);
-                ti.sscale = t.shade.sscale + adjustSWrap;
-                ti.tscale = t.shade.tscale + adjustTWrap;
-                if (!(enables & GGL_ENABLE_W)) {
-                    // S coordinate
-                    const int32_t sscale = ti.sscale;
-                    const int32_t sy = interpolate(ys,
-                            t.shade.is0, t.shade.idsdx, t.shade.idsdy);
-                    if (sscale>=0) {
-                        ti.ydsdy= sy            << sscale;
-                        ti.dsdx = t.shade.idsdx << sscale; 
-                        ti.dsdy = t.shade.idsdy << sscale;
-                    } else {
-                        ti.ydsdy= sy            >> -sscale;
-                        ti.dsdx = t.shade.idsdx >> -sscale; 
-                        ti.dsdy = t.shade.idsdy >> -sscale;
-                    }
-                    // T coordinate
-                    const int32_t tscale = ti.tscale;
-                    const int32_t ty = interpolate(ys,
-                            t.shade.it0, t.shade.idtdx, t.shade.idtdy);
-                    if (tscale>=0) {
-                        ti.ydtdy= ty            << tscale;
-                        ti.dtdx = t.shade.idtdx << tscale; 
-                        ti.dtdy = t.shade.idtdy << tscale;
-                    } else {
-                        ti.ydtdy= ty            >> -tscale;
-                        ti.dtdx = t.shade.idtdx >> -tscale; 
-                        ti.dtdy = t.shade.idtdy >> -tscale;
-                    }
-                }
-            }
-            // mirror for generated code...
-            generated_tex_vars_t& gen = c->generated_vars.texture[i];
-            gen.width   = t.surface.width;
-            gen.height  = t.surface.height;
-            gen.stride  = t.surface.stride;
-            gen.data    = uintptr_t(t.surface.data);
-            gen.dsdx = ti.dsdx;
-            gen.dtdx = ti.dtdx;
-        }
-    }
-
-    // choose the y-stepper
-    c->step_y = step_y__nop;
-    if (enables & GGL_ENABLE_FOG) {
-        c->step_y = step_y__generic;
-    } else if (enables & GGL_ENABLE_TMUS) {
-        if (enables & GGL_ENABLE_SMOOTH) {
-            c->step_y = step_y__generic;
-        } else if (enables & GGL_ENABLE_W) {
-            c->step_y = step_y__w;
-        } else {
-            c->step_y = step_y__tmu;
-        }
-    } else {
-        if (enables & GGL_ENABLE_SMOOTH) {
-            c->step_y = step_y__smooth;
-        }
-    }
-    
-    // choose the rectangle blitter
-    c->rect = rect_generic;
-    if ((c->step_y == step_y__nop) &&
-        (c->scanline == scanline_memcpy))
-    {
-        c->rect = rect_memcpy;
-    }
-}
-
-void init_y_packed(context_t* c, int32_t y0)
-{
-    uint8_t f = c->state.buffers.color.format;
-    c->packed = ggl_pack_color(c, f,
-            c->shade.r0, c->shade.g0, c->shade.b0, c->shade.a0);
-    c->packed8888 = ggl_pack_color(c, GGL_PIXEL_FORMAT_RGBA_8888,
-            c->shade.r0, c->shade.g0, c->shade.b0, c->shade.a0);
-    c->iterators.y = y0;
-    c->step_y = step_y__nop;
-    // choose the rectangle blitter
-    c->rect = rect_generic;
-    if (c->scanline == scanline_memcpy) {
-        c->rect = rect_memcpy;
-    }
-}
-
-void init_y_noop(context_t* c, int32_t y0)
-{
-    c->iterators.y = y0;
-    c->step_y = step_y__nop;
-    // choose the rectangle blitter
-    c->rect = rect_generic;
-    if (c->scanline == scanline_memcpy) {
-        c->rect = rect_memcpy;
-    }
-}
-
-void init_y_error(context_t* c, int32_t y0)
-{
-    // woooops, shoud never happen,
-    // fail gracefully (don't display anything)
-    init_y_noop(c, y0);
-    ALOGE("color-buffer has an invalid format!");
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void step_y__generic(context_t* c)
-{
-    const uint32_t enables = c->state.enables;
-
-    // iterate...
-    iterators_t& ci = c->iterators;
-    ci.y += 1;
-                
-    if (enables & GGL_ENABLE_SMOOTH) {
-        ci.ydrdy += c->shade.drdy;
-        ci.ydgdy += c->shade.dgdy;
-        ci.ydbdy += c->shade.dbdy;
-        ci.ydady += c->shade.dady;
-    }
-
-    const uint32_t mask =
-            GGL_ENABLE_DEPTH_TEST |
-            GGL_ENABLE_W |
-            GGL_ENABLE_FOG;
-    if (enables & mask) {
-        ci.ydzdy += c->shade.dzdy;
-        ci.ydwdy += c->shade.dwdy;
-        ci.ydfdy += c->shade.dfdy;
-    }
-
-    if ((enables & GGL_ENABLE_TMUS) && (!(enables & GGL_ENABLE_W))) {
-        for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-            if (c->state.texture[i].enable) {
-                texture_iterators_t& ti = c->state.texture[i].iterators;
-                ti.ydsdy += ti.dsdy;
-                ti.ydtdy += ti.dtdy;
-            }
-        }
-    }
-}
-
-void step_y__nop(context_t* c)
-{
-    c->iterators.y += 1;
-    c->iterators.ydzdy += c->shade.dzdy;
-}
-
-void step_y__smooth(context_t* c)
-{
-    iterators_t& ci = c->iterators;
-    ci.y += 1;
-    ci.ydrdy += c->shade.drdy;
-    ci.ydgdy += c->shade.dgdy;
-    ci.ydbdy += c->shade.dbdy;
-    ci.ydady += c->shade.dady;
-    ci.ydzdy += c->shade.dzdy;
-}
-
-void step_y__w(context_t* c)
-{
-    iterators_t& ci = c->iterators;
-    ci.y += 1;
-    ci.ydzdy += c->shade.dzdy;
-    ci.ydwdy += c->shade.dwdy;
-}
-
-void step_y__tmu(context_t* c)
-{
-    iterators_t& ci = c->iterators;
-    ci.y += 1;
-    ci.ydzdy += c->shade.dzdy;
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-        if (c->state.texture[i].enable) {
-            texture_iterators_t& ti = c->state.texture[i].iterators;
-            ti.ydsdy += ti.dsdy;
-            ti.ydtdy += ti.dtdy;
-        }
-    }
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void scanline_perspective(context_t* c)
-{
-    struct {
-        union {
-            struct {
-                int32_t s, sq;
-                int32_t t, tq;
-            } sqtq;
-            struct {
-                int32_t v, q;
-            } st[2];
-        };
-    } tc[GGL_TEXTURE_UNIT_COUNT] __attribute__((aligned(16)));
-
-    // XXX: we should have a special case when dwdx = 0
-
-    // 32 pixels spans works okay. 16 is a lot better,
-    // but hey, it's a software renderer...
-    const uint32_t SPAN_BITS = 5; 
-    const uint32_t ys = c->iterators.y;
-    const uint32_t xs = c->iterators.xl;
-    const uint32_t x1 = c->iterators.xr;
-	const uint32_t xc = x1 - xs;
-    uint32_t remainder = xc & ((1<<SPAN_BITS)-1);
-    uint32_t numSpans = xc >> SPAN_BITS;
-
-    const iterators_t& ci = c->iterators;
-    int32_t w0 = (xs * c->shade.dwdx) + ci.ydwdy;
-    int32_t q0 = gglRecipQ(w0, 30);
-    const int iwscale = 32 - gglClz(q0);
-
-    const int32_t dwdx = c->shade.dwdx << SPAN_BITS;
-    int32_t xl = c->iterators.xl;
-
-    // We process s & t with a loop to reduce the code size
-    // (and i-cache pressure).
-
-    for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-        const texture_t& tmu = c->state.texture[i];
-        if (!tmu.enable) continue;
-        int32_t s =   tmu.shade.is0 +
-                     (tmu.shade.idsdy * ys) + (tmu.shade.idsdx * xs) +
-                     ((tmu.shade.idsdx + tmu.shade.idsdy)>>1);
-        int32_t t =   tmu.shade.it0 +
-                     (tmu.shade.idtdy * ys) + (tmu.shade.idtdx * xs) +
-                     ((tmu.shade.idtdx + tmu.shade.idtdy)>>1);
-        tc[i].sqtq.s  = s;
-        tc[i].sqtq.t  = t;
-        tc[i].sqtq.sq = gglMulx(s, q0, iwscale);
-        tc[i].sqtq.tq = gglMulx(t, q0, iwscale);
-    }
-
-    int32_t span = 0;
-    do {
-        int32_t w1;
-        if (ggl_likely(numSpans)) {
-            w1 = w0 + dwdx;
-        } else {
-            if (remainder) {
-                // finish off the scanline...
-                span = remainder;
-                w1 = (c->shade.dwdx * span) + w0;
-            } else {
-                break;
-            }
-        }
-        int32_t q1 = gglRecipQ(w1, 30);
-        for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
-            texture_t& tmu = c->state.texture[i];
-            if (!tmu.enable) continue;
-            texture_iterators_t& ti = tmu.iterators;
-
-            for (int j=0 ; j<2 ; j++) {
-                int32_t v = tc[i].st[j].v;
-                if (span)   v += (tmu.shade.st[j].dx)*span;
-                else        v += (tmu.shade.st[j].dx)<<SPAN_BITS;
-                const int32_t v0 = tc[i].st[j].q;
-                const int32_t v1 = gglMulx(v, q1, iwscale);
-                int32_t dvdx = v1 - v0;
-                if (span)   dvdx /= span;
-                else        dvdx >>= SPAN_BITS;
-                tc[i].st[j].v = v;
-                tc[i].st[j].q = v1;
-
-                const int scale = ti.st[j].scale + (iwscale - 30);
-                if (scale >= 0) {
-                    ti.st[j].ydvdy = v0   << scale;
-                    ti.st[j].dvdx  = dvdx << scale;
-                } else {
-                    ti.st[j].ydvdy = v0   >> -scale;
-                    ti.st[j].dvdx  = dvdx >> -scale;
-                }
-            }
-            generated_tex_vars_t& gen = c->generated_vars.texture[i];
-            gen.dsdx = ti.st[0].dvdx;
-            gen.dtdx = ti.st[1].dvdx;
-        }
-        c->iterators.xl = xl;
-        c->iterators.xr = xl = xl + (span ? span : (1<<SPAN_BITS));
-        w0 = w1;
-        q0 = q1;
-        c->span(c);
-    } while(numSpans--);
-}
-
-void scanline_perspective_single(context_t* c)
-{
-    // 32 pixels spans works okay. 16 is a lot better,
-    // but hey, it's a software renderer...
-    const uint32_t SPAN_BITS = 5; 
-    const uint32_t ys = c->iterators.y;
-    const uint32_t xs = c->iterators.xl;
-    const uint32_t x1 = c->iterators.xr;
-	const uint32_t xc = x1 - xs;
-
-    const iterators_t& ci = c->iterators;
-    int32_t w = (xs * c->shade.dwdx) + ci.ydwdy;
-    int32_t iw = gglRecipQ(w, 30);
-    const int iwscale = 32 - gglClz(iw);
-
-    const int i = 31 - gglClz(c->state.enabled_tmu);
-    generated_tex_vars_t& gen = c->generated_vars.texture[i];
-    texture_t& tmu = c->state.texture[i];
-    texture_iterators_t& ti = tmu.iterators;
-    const int sscale = ti.sscale + (iwscale - 30);
-    const int tscale = ti.tscale + (iwscale - 30);
-    int32_t s =   tmu.shade.is0 +
-                 (tmu.shade.idsdy * ys) + (tmu.shade.idsdx * xs) +
-                 ((tmu.shade.idsdx + tmu.shade.idsdy)>>1);
-    int32_t t =   tmu.shade.it0 +
-                 (tmu.shade.idtdy * ys) + (tmu.shade.idtdx * xs) +
-                 ((tmu.shade.idtdx + tmu.shade.idtdy)>>1);
-    int32_t s0 = gglMulx(s, iw, iwscale);
-    int32_t t0 = gglMulx(t, iw, iwscale);
-    int32_t xl = c->iterators.xl;
-
-    int32_t sq, tq, dsdx, dtdx;
-    int32_t premainder = xc & ((1<<SPAN_BITS)-1);
-    uint32_t numSpans = xc >> SPAN_BITS;
-    if (c->shade.dwdx == 0) {
-        // XXX: we could choose to do this if the error is small enough
-        numSpans = 0;
-        premainder = xc;
-        goto no_perspective;
-    }
-
-    if (premainder) {
-        w += c->shade.dwdx   * premainder;
-        iw = gglRecipQ(w, 30);
-no_perspective:        
-        s += tmu.shade.idsdx * premainder;
-        t += tmu.shade.idtdx * premainder;
-        sq = gglMulx(s, iw, iwscale);
-        tq = gglMulx(t, iw, iwscale);
-        dsdx = (sq - s0) / premainder;
-        dtdx = (tq - t0) / premainder;
-        c->iterators.xl = xl;
-        c->iterators.xr = xl = xl + premainder;
-        goto finish;
-    }
-
-    while (numSpans--) {
-        w += c->shade.dwdx   << SPAN_BITS;
-        s += tmu.shade.idsdx << SPAN_BITS;
-        t += tmu.shade.idtdx << SPAN_BITS;
-        iw = gglRecipQ(w, 30);
-        sq = gglMulx(s, iw, iwscale);
-        tq = gglMulx(t, iw, iwscale);
-        dsdx = (sq - s0) >> SPAN_BITS;
-        dtdx = (tq - t0) >> SPAN_BITS;
-        c->iterators.xl = xl;
-        c->iterators.xr = xl = xl + (1<<SPAN_BITS);
-finish:
-        if (sscale >= 0) {
-            ti.ydsdy = s0   << sscale;
-            ti.dsdx  = dsdx << sscale;
-        } else {
-            ti.ydsdy = s0   >>-sscale;
-            ti.dsdx  = dsdx >>-sscale;
-        }
-        if (tscale >= 0) {
-            ti.ydtdy = t0   << tscale;
-            ti.dtdx  = dtdx << tscale;
-        } else {
-            ti.ydtdy = t0   >>-tscale;
-            ti.dtdx  = dtdx >>-tscale;
-        }
-        s0 = sq;
-        t0 = tq;
-        gen.dsdx = ti.dsdx;
-        gen.dtdx = ti.dtdx;
-        c->span(c);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-void scanline_col32cb16blend(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    union {
-        uint16_t* dst;
-        uint32_t* dst32;
-    };
-    dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-
-#if ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && defined(__arm__))
-#if defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN
-    scanline_col32cb16blend_neon(dst, &(c->packed8888), ct);
-#else  // defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN
-    scanline_col32cb16blend_arm(dst, GGL_RGBA_TO_HOST(c->packed8888), ct);
-#endif // defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN
-#elif ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && defined(__aarch64__))
-    scanline_col32cb16blend_arm64(dst, GGL_RGBA_TO_HOST(c->packed8888), ct);
-#elif ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && (defined(__mips__) && defined(__LP64__)))
-    scanline_col32cb16blend_mips64(dst, GGL_RGBA_TO_HOST(c->packed8888), ct);
-#else
-    uint32_t s = GGL_RGBA_TO_HOST(c->packed8888);
-    int sA = (s>>24);
-    int f = 0x100 - (sA + (sA>>7));
-    while (ct--) {
-        uint16_t d = *dst;
-        int dR = (d>>11)&0x1f;
-        int dG = (d>>5)&0x3f;
-        int dB = (d)&0x1f;
-        int sR = (s >> (   3))&0x1F;
-        int sG = (s >> ( 8+2))&0x3F;
-        int sB = (s >> (16+3))&0x1F;
-        sR += (f*dR)>>8;
-        sG += (f*dG)>>8;
-        sB += (f*dB)>>8;
-        *dst++ = uint16_t((sR<<11)|(sG<<5)|sB);
-    }
-#endif
-
-}
-
-void scanline_t32cb16(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;    
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    union {
-        uint16_t* dst;
-        uint32_t* dst32;
-    };
-    dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-
-    surface_t* tex = &(c->state.texture[0].surface);
-    const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
-    const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
-    uint32_t *src = reinterpret_cast<uint32_t*>(tex->data)+(u+(tex->stride*v));
-    uint32_t s, d;
-
-    if (ct==1 || uintptr_t(dst)&2) {
-last_one:
-        s = GGL_RGBA_TO_HOST( *src++ );
-        *dst++ = convertAbgr8888ToRgb565(s);
-        ct--;
-    }
-
-    while (ct >= 2) {
-#if BYTE_ORDER == BIG_ENDIAN
-        s = GGL_RGBA_TO_HOST( *src++ );
-        d = convertAbgr8888ToRgb565_hi16(s);
-
-        s = GGL_RGBA_TO_HOST( *src++ );
-        d |= convertAbgr8888ToRgb565(s);
-#else
-        s = GGL_RGBA_TO_HOST( *src++ );
-        d = convertAbgr8888ToRgb565(s);
-
-        s = GGL_RGBA_TO_HOST( *src++ );
-        d |= convertAbgr8888ToRgb565(s) << 16;
-#endif
-        *dst32++ = d;
-        ct -= 2;
-    }
-    
-    if (ct > 0) {
-        goto last_one;
-    }
-}
-
-void scanline_t32cb16blend(context_t* c)
-{
-#if ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && (defined(__arm__) || defined(__aarch64__) || \
-    (defined(__mips__) && ((!defined(__LP64__) && __mips_isa_rev < 6) || defined(__LP64__)))))
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    uint16_t* dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-
-    surface_t* tex = &(c->state.texture[0].surface);
-    const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
-    const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
-    uint32_t *src = reinterpret_cast<uint32_t*>(tex->data)+(u+(tex->stride*v));
-
-#ifdef __arm__
-    scanline_t32cb16blend_arm(dst, src, ct);
-#elif defined(__aarch64__)
-    scanline_t32cb16blend_arm64(dst, src, ct);
-#elif defined(__mips__) && !defined(__LP64__) && __mips_isa_rev < 6
-    scanline_t32cb16blend_mips(dst, src, ct);
-#elif defined(__mips__) && defined(__LP64__)
-    scanline_t32cb16blend_mips64(dst, src, ct);
-#endif
-#else
-    dst_iterator16  di(c);
-    horz_iterator32  hi(c);
-    blender_32to16  bl(c);
-    while (di.count--) {
-        uint32_t s = hi.get_pixel32();
-        bl.write(s, di.dst);
-        di.dst++;
-    }
-#endif
-}
-
-void scanline_t32cb16blend_srca(context_t* c)
-{
-    dst_iterator16  di(c);
-    horz_iterator32  hi(c);
-    blender_32to16_srcA  blender(c);
-
-    while (di.count--) {
-        uint32_t s = hi.get_pixel32();
-        blender.write(s,di.dst);
-        di.dst++;
-    }
-}
-
-void scanline_t16cb16blend_clamp_mod(context_t* c)
-{
-    const int a = c->iterators.ydady >> (GGL_COLOR_BITS-8);
-    if (a == 0) {
-        return;
-    }
-
-    if (a == 255) {
-        scanline_t16cb16_clamp(c);
-        return;
-    }
-
-    dst_iterator16  di(c);
-    blender_16to16_modulate  blender(c);
-    clamp_iterator  ci(c);
-
-    while (di.count--) {
-        uint16_t s = ci.get_pixel16();
-        blender.write(s, di.dst);
-        di.dst++;
-    }
-}
-
-void scanline_memcpy(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    const GGLFormat* fp = &(c->formats[cb->format]);
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
-                            (x + (cb->stride * y)) * fp->size;
-
-    surface_t* tex = &(c->state.texture[0].surface);
-    const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
-    const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
-    uint8_t *src = reinterpret_cast<uint8_t*>(tex->data) +
-                            (u + (tex->stride * v)) * fp->size;
-
-    const size_t size = ct * fp->size;
-    memcpy(dst, src, size);
-}
-
-void scanline_memset8(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + (x+(cb->stride*y));
-    uint32_t packed = c->packed;
-    memset(dst, packed, ct);
-}
-
-void scanline_memset16(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    uint16_t* dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-    uint32_t packed = c->packed;
-    android_memset16(dst, packed, ct*2);
-}
-
-void scanline_memset32(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    uint32_t* dst = reinterpret_cast<uint32_t*>(cb->data) + (x+(cb->stride*y));
-    uint32_t packed = GGL_HOST_TO_RGBA(c->packed);
-    android_memset32(dst, packed, ct*4);
-}
-
-void scanline_clear(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    const GGLFormat* fp = &(c->formats[cb->format]);
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
-                            (x + (cb->stride * y)) * fp->size;
-    const size_t size = ct * fp->size;
-    memset(dst, 0, size);
-}
-
-void scanline_set(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    const GGLFormat* fp = &(c->formats[cb->format]);
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
-                            (x + (cb->stride * y)) * fp->size;
-    const size_t size = ct * fp->size;
-    memset(dst, 0xFF, size);
-}
-
-void scanline_noop(context_t* /*c*/)
-{
-}
-
-void rect_generic(context_t* c, size_t yc)
-{
-    do {
-        c->scanline(c);
-        c->step_y(c);
-    } while (--yc);
-}
-
-void rect_memcpy(context_t* c, size_t yc)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    const GGLFormat* fp = &(c->formats[cb->format]);
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
-                            (x + (cb->stride * y)) * fp->size;
-
-    surface_t* tex = &(c->state.texture[0].surface);
-    const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
-    const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
-    uint8_t *src = reinterpret_cast<uint8_t*>(tex->data) +
-                            (u + (tex->stride * v)) * fp->size;
-
-    if (cb->stride == tex->stride && ct == size_t(cb->stride)) {
-        memcpy(dst, src, ct * fp->size * yc);
-    } else {
-        const size_t size = ct * fp->size;
-        const size_t dbpr = cb->stride  * fp->size;
-        const size_t sbpr = tex->stride * fp->size;
-        do {
-            memcpy(dst, src, size);
-            dst += dbpr;
-            src += sbpr;        
-        } while (--yc);
-    }
-}
-// ----------------------------------------------------------------------------
-}; // namespace android
-
diff --git a/libpixelflinger/scanline.h b/libpixelflinger/scanline.h
deleted file mode 100644
index b6f4d37..0000000
--- a/libpixelflinger/scanline.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* libs/pixelflinger/scanline.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_SCANLINE_H
-#define ANDROID_SCANLINE_H
-
-#include <private/pixelflinger/ggl_context.h>
-
-namespace android {
-
-void ggl_init_scanline(context_t* c);
-void ggl_uninit_scanline(context_t* c);
-void ggl_pick_scanline(context_t* c);
-
-}; // namespace android
-
-#endif
diff --git a/libpixelflinger/t32cb16blend.S b/libpixelflinger/t32cb16blend.S
deleted file mode 100644
index 5e4995a..0000000
--- a/libpixelflinger/t32cb16blend.S
+++ /dev/null
@@ -1,203 +0,0 @@
-/* libs/pixelflinger/t32cb16blend.S
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-	.text
-	.syntax unified
-	.balign 4
-	
-	.global scanline_t32cb16blend_arm
-
-
-/*
- * .macro pixel
- *
- * \DREG is a 32-bit register containing *two* original destination RGB565 
- *       pixels, with the even one in the low-16 bits, and the odd one in the
- *       high 16 bits.
- *
- * \SRC is a 32-bit 0xAABBGGRR pixel value, with pre-multiplied colors.
- *
- * \FB is a target register that will contain the blended pixel values.
- *
- * \ODD is either 0 or 1 and indicates if we're blending the lower or 
- *      upper 16-bit pixels in DREG into FB
- *
- *
- * clobbered: r6, r7, lr
- *
- */
-
-.macro pixel,   DREG, SRC, FB, ODD
-
-    // SRC = 0xAABBGGRR
-    mov     r7, \SRC, lsr #24           // sA
-    add     r7, r7, r7, lsr #7          // sA + (sA >> 7)
-    rsb     r7, r7, #0x100              // sA = 0x100 - (sA+(sA>>7))
-
-1:
-
-.if \ODD
-
-    // red
-    mov     lr, \DREG, lsr #(16 + 11)
-    smulbb  lr, r7, lr
-    mov     r6, \SRC, lsr #3
-    and     r6, r6, #0x1F
-    add     lr, r6, lr, lsr #8
-    cmp     lr, #0x1F
-    orrhs   \FB, \FB, #(0x1F<<(16 + 11))
-    orrlo   \FB, \FB, lr, lsl #(16 + 11)
-
-        // green
-        and     r6, \DREG, #(0x3F<<(16 + 5))
-        smulbt  r6, r7, r6
-        mov     lr, \SRC, lsr #(8+2)
-        and     lr, lr, #0x3F
-        add     r6, lr, r6, lsr #(5+8)
-        cmp     r6, #0x3F
-        orrhs   \FB, \FB, #(0x3F<<(16 + 5))
-        orrlo   \FB, \FB, r6, lsl #(16 + 5)
-
-            // blue
-            and     lr, \DREG, #(0x1F << 16)
-            smulbt  lr, r7, lr
-            mov     r6, \SRC, lsr #(8+8+3)
-            and     r6, r6, #0x1F
-            add     lr, r6, lr, lsr #8
-            cmp     lr, #0x1F
-            orrhs   \FB, \FB, #(0x1F << 16)
-            orrlo   \FB, \FB, lr, lsl #16
-
-.else
-
-    // red
-    mov     lr, \DREG, lsr #11
-    and     lr, lr, #0x1F
-    smulbb  lr, r7, lr
-    mov     r6, \SRC, lsr #3
-    and     r6, r6, #0x1F
-    add     lr, r6, lr, lsr #8
-    cmp     lr, #0x1F
-    movhs   \FB, #(0x1F<<11)
-    movlo   \FB, lr, lsl #11
-
-
-        // green
-        and     r6, \DREG, #(0x3F<<5)
-        smulbb  r6, r7, r6
-        mov     lr, \SRC, lsr #(8+2)
-        and     lr, lr, #0x3F
-        add     r6, lr, r6, lsr #(5+8)
-        cmp     r6, #0x3F
-        orrhs   \FB, \FB, #(0x3F<<5)
-        orrlo   \FB, \FB, r6, lsl #5
-
-            // blue
-            and     lr, \DREG, #0x1F
-            smulbb  lr, r7, lr
-            mov     r6, \SRC, lsr #(8+8+3)
-            and     r6, r6, #0x1F
-            add     lr, r6, lr, lsr #8
-            cmp     lr, #0x1F
-            orrhs   \FB, \FB, #0x1F
-            orrlo   \FB, \FB, lr
-
-.endif
-
-    .endm
-    
-
-// r0:  dst ptr
-// r1:  src ptr
-// r2:  count
-// r3:  d
-// r4:  s0
-// r5:  s1
-// r6:  pixel
-// r7:  pixel
-// r8:  free
-// r9:  free
-// r10: free
-// r11: free
-// r12: scratch
-// r14: pixel
-
-scanline_t32cb16blend_arm:
-    stmfd	sp!, {r4-r7, lr}
-
-    pld     [r0]
-    pld     [r1]
-
-    // align DST to 32 bits
-    tst     r0, #0x3
-    beq     aligned
-    subs    r2, r2, #1
-    ldmfdlo sp!, {r4-r7, lr}        // return
-    bxlo    lr
-
-last:
-    ldr     r4, [r1], #4
-    ldrh    r3, [r0]
-    pixel   r3, r4, r12, 0
-    strh    r12, [r0], #2
-
-aligned:
-    subs    r2, r2, #2
-    blo     9f
-
-    // The main loop is unrolled twice and processes 4 pixels
-8:  ldmia   r1!, {r4, r5}
-    // stream the source
-    pld     [r1, #32]
-    add     r0, r0, #4
-    // it's all zero, skip this pixel
-    orrs    r3, r4, r5
-    beq     7f
-    
-    // load the destination
-    ldr     r3, [r0, #-4]
-    // stream the destination
-    pld     [r0, #32]
-    pixel   r3, r4, r12, 0
-    pixel   r3, r5, r12, 1
-    // effectively, we're getting write-combining by virtue of the
-    // cpu's write-back cache.
-    str     r12, [r0, #-4]
-
-    // 2nd iterration of the loop, don't stream anything
-    subs    r2, r2, #2
-    movlt   r4, r5
-    blt     9f
-    ldmia   r1!, {r4, r5}
-    add     r0, r0, #4
-    orrs    r3, r4, r5
-    beq     7f
-    ldr     r3, [r0, #-4]
-    pixel   r3, r4, r12, 0
-    pixel   r3, r5, r12, 16
-    str     r12, [r0, #-4]
-
-    
-7:  subs    r2, r2, #2
-    bhs     8b
-    mov     r4, r5
-
-9:  adds    r2, r2, #1
-    ldmfdlo sp!, {r4-r7, lr}        // return
-    bxlo    lr
-    b       last
diff --git a/libpixelflinger/tests/Android.bp b/libpixelflinger/tests/Android.bp
deleted file mode 100644
index e20dd93..0000000
--- a/libpixelflinger/tests/Android.bp
+++ /dev/null
@@ -1,17 +0,0 @@
-cc_defaults {
-    name: "pixelflinger-tests",
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    header_libs: ["libpixelflinger_internal"],
-    static_libs: [
-        "libbase",
-        "libcutils",
-        "liblog",
-        "libpixelflinger",
-        "libutils",
-    ],
-}
diff --git a/libpixelflinger/tests/arch-arm64/Android.bp b/libpixelflinger/tests/arch-arm64/Android.bp
deleted file mode 100644
index 2f5586a..0000000
--- a/libpixelflinger/tests/arch-arm64/Android.bp
+++ /dev/null
@@ -1,11 +0,0 @@
-cc_defaults {
-    name: "pixelflinger-tests-arm64",
-    defaults: ["pixelflinger-tests"],
-
-    enabled: false,
-    arch: {
-        arm64: {
-            enabled: true,
-        },
-    },
-}
diff --git a/libpixelflinger/tests/arch-arm64/assembler/Android.bp b/libpixelflinger/tests/arch-arm64/assembler/Android.bp
deleted file mode 100644
index 003f485..0000000
--- a/libpixelflinger/tests/arch-arm64/assembler/Android.bp
+++ /dev/null
@@ -1,9 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-arm64-assembler-test",
-    defaults: ["pixelflinger-tests-arm64"],
-
-    srcs: [
-        "arm64_assembler_test.cpp",
-        "asm_test_jacket.S",
-    ],
-}
diff --git a/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp b/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
deleted file mode 100644
index 63642c4..0000000
--- a/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
+++ /dev/null
@@ -1,782 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include <sys/mman.h>
-#include <cutils/ashmem.h>
-
-#define __STDC_FORMAT_MACROS
-#include <inttypes.h>
-
-#include "codeflinger/ARMAssemblerInterface.h"
-#include "codeflinger/Arm64Assembler.h"
-using namespace android;
-
-#define TESTS_DATAOP_ENABLE             1
-#define TESTS_DATATRANSFER_ENABLE       1
-#define TESTS_LDMSTM_ENABLE             1
-#define TESTS_REG_CORRUPTION_ENABLE     0
-
-void *instrMem;
-uint32_t  instrMemSize = 128 * 1024;
-char     dataMem[8192];
-
-typedef void (*asm_function_t)();
-extern "C" void asm_test_jacket(asm_function_t function,
-                                int64_t regs[], int32_t flags[]);
-
-#define MAX_32BIT (uint32_t)(((uint64_t)1 << 32) - 1)
-const uint32_t NA = 0;
-const uint32_t NUM_REGS = 32;
-const uint32_t NUM_FLAGS = 16;
-
-enum instr_t
-{
-    INSTR_ADD,
-    INSTR_SUB,
-    INSTR_AND,
-    INSTR_ORR,
-    INSTR_RSB,
-    INSTR_BIC,
-    INSTR_CMP,
-    INSTR_MOV,
-    INSTR_MVN,
-    INSTR_MUL,
-    INSTR_MLA,
-    INSTR_SMULBB,
-    INSTR_SMULBT,
-    INSTR_SMULTB,
-    INSTR_SMULTT,
-    INSTR_SMULWB,
-    INSTR_SMULWT,
-    INSTR_SMLABB,
-    INSTR_UXTB16,
-    INSTR_UBFX,
-    INSTR_ADDR_ADD,
-    INSTR_ADDR_SUB,
-    INSTR_LDR,
-    INSTR_LDRB,
-    INSTR_LDRH,
-    INSTR_ADDR_LDR,
-    INSTR_LDM,
-    INSTR_STR,
-    INSTR_STRB,
-    INSTR_STRH,
-    INSTR_ADDR_STR,
-    INSTR_STM
-};
-
-enum shift_t
-{
-    SHIFT_LSL,
-    SHIFT_LSR,
-    SHIFT_ASR,
-    SHIFT_ROR,
-    SHIFT_NONE
-};
-
-enum offset_t
-{
-    REG_SCALE_OFFSET,
-    REG_OFFSET,
-    IMM8_OFFSET,
-    IMM12_OFFSET,
-    NO_OFFSET
-};
-
-enum cond_t
-{
-    EQ, NE, CS, CC, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL, NV,
-    HS = CS,
-    LO = CC
-};
-
-const char * cc_code[] =
-{
-    "EQ", "NE", "CS", "CC", "MI", "PL", "VS", "VC",
-    "HI", "LS","GE","LT", "GT", "LE", "AL", "NV"
-};
-
-
-struct dataOpTest_t
-{
-    uint32_t id;
-    instr_t  op;
-    uint32_t preFlag;
-    cond_t   cond;
-    bool     setFlags;
-    uint64_t RnValue;
-    uint64_t RsValue;
-    bool     immediate;
-    uint32_t immValue;
-    uint64_t RmValue;
-    uint32_t shiftMode;
-    uint32_t shiftAmount;
-    uint64_t RdValue;
-    bool     checkRd;
-    uint64_t postRdValue;
-    bool     checkFlag;
-    uint32_t postFlag;
-};
-
-struct dataTransferTest_t
-{
-    uint32_t id;
-    instr_t op;
-    uint32_t preFlag;
-    cond_t   cond;
-    bool     setMem;
-    uint64_t memOffset;
-    uint64_t memValue;
-    uint64_t RnValue;
-    offset_t offsetType;
-    uint64_t RmValue;
-    uint32_t immValue;
-    bool     writeBack;
-    bool     preIndex;
-    bool     postIndex;
-    uint64_t RdValue;
-    uint64_t postRdValue;
-    uint64_t postRnValue;
-    bool     checkMem;
-    uint64_t postMemOffset;
-    uint32_t postMemLength;
-    uint64_t postMemValue;
-};
-
-
-dataOpTest_t dataOpTests [] =
-{
-     {0xA000,INSTR_ADD,AL,AL,0,1,NA,1,MAX_32BIT ,NA,NA,NA,NA,1,0,0,0},
-     {0xA001,INSTR_ADD,AL,AL,0,1,NA,1,MAX_32BIT -1,NA,NA,NA,NA,1,MAX_32BIT,0,0},
-     {0xA002,INSTR_ADD,AL,AL,0,1,NA,0,NA,MAX_32BIT ,NA,NA,NA,1,0,0,0},
-     {0xA003,INSTR_ADD,AL,AL,0,1,NA,0,NA,MAX_32BIT -1,NA,NA,NA,1,MAX_32BIT,0,0},
-     {0xA004,INSTR_ADD,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSL,0,NA,1,0,0,0},
-     {0xA005,INSTR_ADD,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,NA,1,0x80000001,0,0},
-     {0xA006,INSTR_ADD,AL,AL,0,1,NA,0,0,3,SHIFT_LSR,1,NA,1,2,0,0},
-     {0xA007,INSTR_ADD,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSR,31,NA,1,2,0,0},
-     {0xA008,INSTR_ADD,AL,AL,0,0,NA,0,0,3,SHIFT_ASR,1,NA,1,1,0,0},
-     {0xA009,INSTR_ADD,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_ASR,31,NA,1,0,0,0},
-     {0xA010,INSTR_AND,AL,AL,0,1,NA,1,MAX_32BIT ,0,0,0,NA,1,1,0,0},
-     {0xA011,INSTR_AND,AL,AL,0,1,NA,1,MAX_32BIT -1,0,0,0,NA,1,0,0,0},
-     {0xA012,INSTR_AND,AL,AL,0,1,NA,0,0,MAX_32BIT ,0,0,NA,1,1,0,0},
-     {0xA013,INSTR_AND,AL,AL,0,1,NA,0,0,MAX_32BIT -1,0,0,NA,1,0,0,0},
-     {0xA014,INSTR_AND,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSL,0,NA,1,1,0,0},
-     {0xA015,INSTR_AND,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,NA,1,0,0,0},
-     {0xA016,INSTR_AND,AL,AL,0,1,NA,0,0,3,SHIFT_LSR,1,NA,1,1,0,0},
-     {0xA017,INSTR_AND,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSR,31,NA,1,1,0,0},
-     {0xA018,INSTR_AND,AL,AL,0,0,NA,0,0,3,SHIFT_ASR,1,NA,1,0,0,0},
-     {0xA019,INSTR_AND,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_ASR,31,NA,1,1,0,0},
-     {0xA020,INSTR_ORR,AL,AL,0,3,NA,1,MAX_32BIT ,0,0,0,NA,1,MAX_32BIT,0,0},
-     {0xA021,INSTR_ORR,AL,AL,0,2,NA,1,MAX_32BIT -1,0,0,0,NA,1,MAX_32BIT-1,0,0},
-     {0xA022,INSTR_ORR,AL,AL,0,3,NA,0,0,MAX_32BIT ,0,0,NA,1,MAX_32BIT,0,0},
-     {0xA023,INSTR_ORR,AL,AL,0,2,NA,0,0,MAX_32BIT -1,0,0,NA,1,MAX_32BIT-1,0,0},
-     {0xA024,INSTR_ORR,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSL,0,NA,1,MAX_32BIT,0,0},
-     {0xA025,INSTR_ORR,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,NA,1,0x80000001,0,0},
-     {0xA026,INSTR_ORR,AL,AL,0,1,NA,0,0,3,SHIFT_LSR,1,NA,1,1,0,0},
-     {0xA027,INSTR_ORR,AL,AL,0,0,NA,0,0,MAX_32BIT ,SHIFT_LSR,31,NA,1,1,0,0},
-     {0xA028,INSTR_ORR,AL,AL,0,0,NA,0,0,3,SHIFT_ASR,1,NA,1,1,0,0},
-     {0xA029,INSTR_ORR,AL,AL,0,1,NA,0,0,MAX_32BIT ,SHIFT_ASR,31,NA,1,MAX_32BIT ,0,0},
-     {0xA030,INSTR_CMP,AL,AL,1,0x10000,NA,1,0x10000,0,0,0,NA,0,0,1,HS},
-     {0xA031,INSTR_CMP,AL,AL,1,0x00000,NA,1,0x10000,0,0,0,NA,0,0,1,CC},
-     {0xA032,INSTR_CMP,AL,AL,1,0x00000,NA,0,0,0x10000,0,0,NA,0,0,1,LT},
-     {0xA033,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x10000,0,0,NA,0,0,1,EQ},
-     {0xA034,INSTR_CMP,AL,AL,1,0x00000,NA,0,0,0x10000,0,0,NA,0,0,1,LS},
-     {0xA035,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x10000,0,0,NA,0,0,1,LS},
-     {0xA036,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x00000,0,0,NA,0,0,1,HI},
-     {0xA037,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x10000,0,0,NA,0,0,1,HS},
-     {0xA038,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x00000,0,0,NA,0,0,1,HS},
-     {0xA039,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x00000,0,0,NA,0,0,1,NE},
-     {0xA040,INSTR_CMP,AL,AL,1,0,NA,0,0,MAX_32BIT ,SHIFT_LSR,1,NA,0,0,1,LT},
-     {0xA041,INSTR_CMP,AL,AL,1,1,NA,0,0,MAX_32BIT ,SHIFT_LSR,31,NA,0,0,1,EQ},
-     {0xA042,INSTR_CMP,AL,AL,1,0,NA,0,0,0x10000,SHIFT_LSR,31,NA,0,0,1,LS},
-     {0xA043,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x30000,SHIFT_LSR,1,NA,0,0,1,LS},
-     {0xA044,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x00000,SHIFT_LSR,31,NA,0,0,1,HI},
-     {0xA045,INSTR_CMP,AL,AL,1,1,NA,0,0,MAX_32BIT ,SHIFT_LSR,31,NA,0,0,1,HS},
-     {0xA046,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x2000,SHIFT_LSR,1,NA,0,0,1,HS},
-     {0xA047,INSTR_CMP,AL,AL,1,0,NA,0,0,MAX_32BIT ,SHIFT_LSR,1,NA,0,0,1,NE},
-     {0xA048,INSTR_CMP,AL,AL,1,0,NA,0,0,0x10000,SHIFT_ASR,2,NA,0,0,1,LT},
-     {0xA049,INSTR_CMP,AL,AL,1,MAX_32BIT ,NA,0,0,MAX_32BIT ,SHIFT_ASR,1,NA,0,0,1,EQ},
-     {0xA050,INSTR_CMP,AL,AL,1,MAX_32BIT ,NA,0,0,MAX_32BIT ,SHIFT_ASR,31,NA,0,0,1,LS},
-     {0xA051,INSTR_CMP,AL,AL,1,0,NA,0,0,0x10000,SHIFT_ASR,1,NA,0,0,1,LS},
-     {0xA052,INSTR_CMP,AL,AL,1,0x10000,NA,0,0,0x10000,SHIFT_ASR,1,NA,0,0,1,HI},
-     {0xA053,INSTR_CMP,AL,AL,1,1,NA,0,0,0x10000,SHIFT_ASR,31,NA,0,0,1,HS},
-     {0xA054,INSTR_CMP,AL,AL,1,1,NA,0,0,0x10000,SHIFT_ASR,16,NA,0,0,1,HS},
-     {0xA055,INSTR_CMP,AL,AL,1,1,NA,0,0,MAX_32BIT ,SHIFT_ASR,1,NA,0,0,1,NE},
-     {0xA056,INSTR_MUL,AL,AL,0,0,0x10000,0,0,0x10000,0,0,NA,1,0,0,0},
-     {0xA057,INSTR_MUL,AL,AL,0,0,0x1000,0,0,0x10000,0,0,NA,1,0x10000000,0,0},
-     {0xA058,INSTR_MUL,AL,AL,0,0,MAX_32BIT ,0,0,1,0,0,NA,1,MAX_32BIT ,0,0},
-     {0xA059,INSTR_MLA,AL,AL,0,0x10000,0x10000,0,0,0x10000,0,0,NA,1,0x10000,0,0},
-     {0xA060,INSTR_MLA,AL,AL,0,0x10000,0x1000,0,0,0x10000,0,0,NA,1,0x10010000,0,0},
-     {0xA061,INSTR_MLA,AL,AL,1,1,MAX_32BIT ,0,0,1,0,0,NA,1,0,1,PL},
-     {0xA062,INSTR_MLA,AL,AL,1,0,MAX_32BIT ,0,0,1,0,0,NA,1,MAX_32BIT ,1,MI},
-     {0xA063,INSTR_SUB,AL,AL,1,1 << 16,NA,1,1 << 16,NA,NA,NA,NA,1,0,1,PL},
-     {0xA064,INSTR_SUB,AL,AL,1,(1 << 16) + 1,NA,1,1 << 16,NA,NA,NA,NA,1,1,1,PL},
-     {0xA065,INSTR_SUB,AL,AL,1,0,NA,1,1 << 16,NA,NA,NA,NA,1,(uint32_t)(0 - (1<<16)),1,MI},
-     {0xA066,INSTR_SUB,MI,MI,0,2,NA,0,NA,1,NA,NA,2,1,1,0,NA},
-     {0xA067,INSTR_SUB,EQ,MI,0,2,NA,0,NA,1,NA,NA,2,1,2,0,NA},
-     {0xA068,INSTR_SUB,GT,GE,0,2,NA,1,1,NA,NA,NA,2,1,1,0,NA},
-     {0xA069,INSTR_SUB,LT,GE,0,2,NA,1,1,NA,NA,NA,2,1,2,0,NA},
-     {0xA070,INSTR_SUB,CS,HS,0,2,NA,1,1,NA,NA,NA,2,1,1,0,NA},
-     {0xA071,INSTR_SUB,CC,HS,0,2,NA,1,1,NA,NA,NA,2,1,2,0,NA},
-     {0xA072,INSTR_SUB,AL,AL,0,1,NA,1,1 << 16,0,0,0,NA,1,(uint32_t)(1 - (1 << 16)),0,NA},
-     {0xA073,INSTR_SUB,AL,AL,0,MAX_32BIT,NA,1,1,0,0,0,NA,1,MAX_32BIT  - 1,0,NA},
-     {0xA074,INSTR_SUB,AL,AL,0,1,NA,1,1,0,0,0,NA,1,0,0,NA},
-     {0xA075,INSTR_SUB,AL,AL,0,1,NA,0,NA,1 << 16,0,0,NA,1,(uint32_t)(1 - (1 << 16)),0,NA},
-     {0xA076,INSTR_SUB,AL,AL,0,MAX_32BIT,NA,0,NA,1,0,0,NA,1,MAX_32BIT  - 1,0,NA},
-     {0xA077,INSTR_SUB,AL,AL,0,1,NA,0,NA,1,0,0,NA,1,0,0,NA},
-     {0xA078,INSTR_SUB,AL,AL,0,1,NA,0,NA,1,SHIFT_LSL,16,NA,1,(uint32_t)(1 - (1 << 16)),0,NA},
-     {0xA079,INSTR_SUB,AL,AL,0,0x80000001,NA,0,NA,MAX_32BIT ,SHIFT_LSL,31,NA,1,1,0,NA},
-     {0xA080,INSTR_SUB,AL,AL,0,1,NA,0,NA,3,SHIFT_LSR,1,NA,1,0,0,NA},
-     {0xA081,INSTR_SUB,AL,AL,0,1,NA,0,NA,MAX_32BIT ,SHIFT_LSR,31,NA,1,0,0,NA},
-     {0xA082,INSTR_RSB,GT,GE,0,2,NA,1,0,NA,NA,NA,2,1,(uint32_t)-2,0,NA},
-     {0xA083,INSTR_RSB,LT,GE,0,2,NA,1,0,NA,NA,NA,2,1,2,0,NA},
-     {0xA084,INSTR_RSB,AL,AL,0,1,NA,1,1 << 16,NA,NA,NA,NA,1,(1 << 16) - 1,0,NA},
-     {0xA085,INSTR_RSB,AL,AL,0,MAX_32BIT,NA,1,1,NA,NA,NA,NA,1,(uint32_t) (1 - MAX_32BIT),0,NA},
-     {0xA086,INSTR_RSB,AL,AL,0,1,NA,1,1,NA,NA,NA,NA,1,0,0,NA},
-     {0xA087,INSTR_RSB,AL,AL,0,1,NA,0,NA,1 << 16,0,0,NA,1,(1 << 16) - 1,0,NA},
-     {0xA088,INSTR_RSB,AL,AL,0,MAX_32BIT,NA,0,NA,1,0,0,NA,1,(uint32_t) (1 - MAX_32BIT),0,NA},
-     {0xA089,INSTR_RSB,AL,AL,0,1,NA,0,NA,1,0,0,NA,1,0,0,NA},
-     {0xA090,INSTR_RSB,AL,AL,0,1,NA,0,NA,1,SHIFT_LSL,16,NA,1,(1 << 16) - 1,0,NA},
-     {0xA091,INSTR_RSB,AL,AL,0,0x80000001,NA,0,NA,MAX_32BIT ,SHIFT_LSL,31,NA,1,(uint32_t)-1,0,NA},
-     {0xA092,INSTR_RSB,AL,AL,0,1,NA,0,NA,3,SHIFT_LSR,1,NA,1,0,0,NA},
-     {0xA093,INSTR_RSB,AL,AL,0,1,NA,0,NA,MAX_32BIT ,SHIFT_LSR,31,NA,1,0,0,NA},
-     {0xA094,INSTR_MOV,AL,AL,0,NA,NA,1,0x80000001,NA,NA,NA,NA,1,0x80000001,0,0},
-     {0xA095,INSTR_MOV,AL,AL,0,NA,NA,0,0,0x80000001,0,0,NA,1,0x80000001,0,0},
-     {0xA096,INSTR_MOV,AL,AL,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,NA,1,MAX_32BIT -1,0,0},
-     {0xA097,INSTR_MOV,AL,AL,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,NA,1,0x80000000,0,0},
-     {0xA098,INSTR_MOV,AL,AL,0,NA,NA,0,0,3,SHIFT_LSR,1,NA,1,1,0,0},
-     {0xA099,INSTR_MOV,AL,AL,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSR,31,NA,1,1,0,0},
-     {0xA100,INSTR_MOV,AL,AL,0,NA,NA,0,0,3,SHIFT_ASR,1,NA,1,1,0,0},
-     {0xA101,INSTR_MOV,AL,AL,0,NA,NA,0,0,MAX_32BIT ,SHIFT_ASR,31,NA,1,MAX_32BIT ,0,0},
-     {0xA102,INSTR_MOV,AL,AL,0,NA,NA,0,0,3,SHIFT_ROR,1,NA,1,0x80000001,0,0},
-     {0xA103,INSTR_MOV,AL,AL,0,NA,NA,0,0,0x80000001,SHIFT_ROR,31,NA,1,3,0,0},
-     {0xA104,INSTR_MOV,AL,AL,1,NA,NA,0,0,MAX_32BIT -1,SHIFT_ASR,1,NA,1,MAX_32BIT,1,MI},
-     {0xA105,INSTR_MOV,AL,AL,1,NA,NA,0,0,3,SHIFT_ASR,1,NA,1,1,1,PL},
-     {0xA106,INSTR_MOV,PL,MI,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2,0,0},
-     {0xA107,INSTR_MOV,MI,MI,0,NA,NA,0,0,0x80000001,0,0,2,1,0x80000001,0,0},
-     {0xA108,INSTR_MOV,EQ,LT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2,0,0},
-     {0xA109,INSTR_MOV,LT,LT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0x80000001,0,0},
-     {0xA110,INSTR_MOV,GT,GE,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,2,1,MAX_32BIT -1,0,0},
-     {0xA111,INSTR_MOV,EQ,GE,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,2,1,0x80000000,0,0},
-     {0xA112,INSTR_MOV,LT,GE,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,2,1,2,0,0},
-     {0xA113,INSTR_MOV,GT,LE,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,2,1,2,0,0},
-     {0xA114,INSTR_MOV,EQ,LE,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0x80000001,0,0},
-     {0xA115,INSTR_MOV,LT,LE,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,31,2,1,0x80000000,0,0},
-     {0xA116,INSTR_MOV,EQ,GT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2,0,0},
-     {0xA117,INSTR_MOV,GT,GT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0x80000001,0,0},
-     {0xA118,INSTR_MOV,LE,GT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2,0,0},
-     {0xA119,INSTR_MOV,EQ,GT,0,NA,NA,0,0,0x80000001,0,0,2,1,2,0,0},
-     {0xA120,INSTR_MOV,GT,GT,0,NA,NA,0,0,0x80000001,0,0,2,1,0x80000001,0,0},
-     {0xA121,INSTR_MOV,LE,GT,0,NA,NA,0,0,0x80000001,0,0,2,1,2,0,0},
-     {0xA122,INSTR_MOV,EQ,GT,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,2,1,2,0,0},
-     {0xA123,INSTR_MOV,GT,GT,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,2,1,MAX_32BIT -1,0,0},
-     {0xA124,INSTR_MOV,LE,GT,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,2,1,2,0,0},
-     {0xA125,INSTR_MOV,LO,HS,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2,0,0},
-     {0xA126,INSTR_MOV,HS,HS,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0x80000001,0,0},
-     {0xA127,INSTR_MVN,LO,HS,0,NA,NA,1,MAX_32BIT -1,NA,NA,NA,2,1,2,0,0},
-     {0xA128,INSTR_MVN,HS,HS,0,NA,NA,1,MAX_32BIT -1,NA,NA,NA,2,1,1,0,0},
-     {0xA129,INSTR_MVN,AL,AL,0,NA,NA,1,0,NA,NA,NA,2,1,MAX_32BIT,0,NA},
-     {0xA130,INSTR_MVN,AL,AL,0,NA,NA,0,NA,MAX_32BIT -1,NA,0,2,1,1,0,NA},
-     {0xA131,INSTR_MVN,AL,AL,0,NA,NA,0,NA,0x80000001,NA,0,2,1,0x7FFFFFFE,0,NA},
-     {0xA132,INSTR_BIC,AL,AL,0,1,NA,1,MAX_32BIT ,NA,NA,NA,NA,1,0,0,0},
-     {0xA133,INSTR_BIC,AL,AL,0,1,NA,1,MAX_32BIT -1,NA,NA,NA,NA,1,1,0,0},
-     {0xA134,INSTR_BIC,AL,AL,0,1,NA,0,0,MAX_32BIT ,0,0,NA,1,0,0,0},
-     {0xA135,INSTR_BIC,AL,AL,0,1,NA,0,0,MAX_32BIT -1,0,0,NA,1,1,0,0},
-     {0xA136,INSTR_BIC,AL,AL,0,0xF0,NA,0,0,3,SHIFT_ASR,1,NA,1,0xF0,0,0},
-     {0xA137,INSTR_BIC,AL,AL,0,0xF0,NA,0,0,MAX_32BIT ,SHIFT_ASR,31,NA,1,0,0,0},
-     {0xA138,INSTR_SMULBB,AL,AL,0,NA,0xABCDFFFF,0,NA,0xABCD0001,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA139,INSTR_SMULBB,AL,AL,0,NA,0xABCD0001,0,NA,0xABCD0FFF,NA,NA,NA,1,0x00000FFF,0,0},
-     {0xA140,INSTR_SMULBB,AL,AL,0,NA,0xABCD0001,0,NA,0xABCDFFFF,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA141,INSTR_SMULBB,AL,AL,0,NA,0xABCDFFFF,0,NA,0xABCDFFFF,NA,NA,NA,1,1,0,0},
-     {0xA142,INSTR_SMULBT,AL,AL,0,NA,0xFFFFABCD,0,NA,0xABCD0001,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA143,INSTR_SMULBT,AL,AL,0,NA,0x0001ABCD,0,NA,0xABCD0FFF,NA,NA,NA,1,0x00000FFF,0,0},
-     {0xA144,INSTR_SMULBT,AL,AL,0,NA,0x0001ABCD,0,NA,0xABCDFFFF,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA145,INSTR_SMULBT,AL,AL,0,NA,0xFFFFABCD,0,NA,0xABCDFFFF,NA,NA,NA,1,1,0,0},
-     {0xA146,INSTR_SMULTB,AL,AL,0,NA,0xABCDFFFF,0,NA,0x0001ABCD,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA147,INSTR_SMULTB,AL,AL,0,NA,0xABCD0001,0,NA,0x0FFFABCD,NA,NA,NA,1,0x00000FFF,0,0},
-     {0xA148,INSTR_SMULTB,AL,AL,0,NA,0xABCD0001,0,NA,0xFFFFABCD,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA149,INSTR_SMULTB,AL,AL,0,NA,0xABCDFFFF,0,NA,0xFFFFABCD,NA,NA,NA,1,1,0,0},
-     {0xA150,INSTR_SMULTT,AL,AL,0,NA,0xFFFFABCD,0,NA,0x0001ABCD,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA151,INSTR_SMULTT,AL,AL,0,NA,0x0001ABCD,0,NA,0x0FFFABCD,NA,NA,NA,1,0x00000FFF,0,0},
-     {0xA152,INSTR_SMULTT,AL,AL,0,NA,0x0001ABCD,0,NA,0xFFFFABCD,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA153,INSTR_SMULTT,AL,AL,0,NA,0xFFFFABCD,0,NA,0xFFFFABCD,NA,NA,NA,1,1,0,0},
-     {0xA154,INSTR_SMULWB,AL,AL,0,NA,0xABCDFFFF,0,NA,0x0001ABCD,NA,NA,NA,1,0xFFFFFFFE,0,0},
-     {0xA155,INSTR_SMULWB,AL,AL,0,NA,0xABCD0001,0,NA,0x0FFFABCD,NA,NA,NA,1,0x00000FFF,0,0},
-     {0xA156,INSTR_SMULWB,AL,AL,0,NA,0xABCD0001,0,NA,0xFFFFABCD,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA157,INSTR_SMULWB,AL,AL,0,NA,0xABCDFFFF,0,NA,0xFFFFABCD,NA,NA,NA,1,0,0,0},
-     {0xA158,INSTR_SMULWT,AL,AL,0,NA,0xFFFFABCD,0,NA,0x0001ABCD,NA,NA,NA,1,0xFFFFFFFE,0,0},
-     {0xA159,INSTR_SMULWT,AL,AL,0,NA,0x0001ABCD,0,NA,0x0FFFABCD,NA,NA,NA,1,0x00000FFF,0,0},
-     {0xA160,INSTR_SMULWT,AL,AL,0,NA,0x0001ABCD,0,NA,0xFFFFABCD,NA,NA,NA,1,0xFFFFFFFF,0,0},
-     {0xA161,INSTR_SMULWT,AL,AL,0,NA,0xFFFFABCD,0,NA,0xFFFFABCD,NA,NA,NA,1,0,0,0},
-     {0xA162,INSTR_SMLABB,AL,AL,0,1,0xABCDFFFF,0,NA,0xABCD0001,NA,NA,NA,1,0,0,0},
-     {0xA163,INSTR_SMLABB,AL,AL,0,1,0xABCD0001,0,NA,0xABCD0FFF,NA,NA,NA,1,0x00001000,0,0},
-     {0xA164,INSTR_SMLABB,AL,AL,0,0xFFFFFFFF,0xABCD0001,0,NA,0xABCDFFFF,NA,NA,NA,1,0xFFFFFFFE,0,0},
-     {0xA165,INSTR_SMLABB,AL,AL,0,0xFFFFFFFF,0xABCDFFFF,0,NA,0xABCDFFFF,NA,NA,NA,1,0,0,0},
-     {0xA166,INSTR_UXTB16,AL,AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,0,NA,1,0x00CD0001,0,0},
-     {0xA167,INSTR_UXTB16,AL,AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,1,NA,1,0x00AB00EF,0,0},
-     {0xA168,INSTR_UXTB16,AL,AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,2,NA,1,0x000100CD,0,0},
-     {0xA169,INSTR_UXTB16,AL,AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,3,NA,1,0x00EF00AB,0,0},
-     {0xA170,INSTR_UBFX,AL,AL,0,0xABCDEF01,4,0,NA,24,NA,NA,NA,1,0x00BCDEF0,0,0},
-     {0xA171,INSTR_UBFX,AL,AL,0,0xABCDEF01,1,0,NA,2,NA,NA,NA,1,0,0,0},
-     {0xA172,INSTR_UBFX,AL,AL,0,0xABCDEF01,16,0,NA,8,NA,NA,NA,1,0xCD,0,0},
-     {0xA173,INSTR_UBFX,AL,AL,0,0xABCDEF01,31,0,NA,1,NA,NA,NA,1,1,0,0},
-     {0xA174,INSTR_ADDR_ADD,AL,AL,0,0xCFFFFFFFF,NA,0,NA,0x1,SHIFT_LSL,1,NA,1,0xD00000001,0,0},
-     {0xA175,INSTR_ADDR_ADD,AL,AL,0,0x01,NA,0,NA,0x1,SHIFT_LSL,2,NA,1,0x5,0,0},
-     {0xA176,INSTR_ADDR_ADD,AL,AL,0,0xCFFFFFFFF,NA,0,NA,0x1,NA,0,NA,1,0xD00000000,0,0},
-     {0xA177,INSTR_ADDR_SUB,AL,AL,0,0xD00000001,NA,0,NA,0x010000,SHIFT_LSR,15,NA,1,0xCFFFFFFFF,0,0},
-     {0xA178,INSTR_ADDR_SUB,AL,AL,0,0xCFFFFFFFF,NA,0,NA,0x020000,SHIFT_LSR,15,NA,1,0xCFFFFFFFB,0,0},
-     {0xA179,INSTR_ADDR_SUB,AL,AL,0,3,NA,0,NA,0x010000,SHIFT_LSR,15,NA,1,1,0,0},
-};
-
-dataTransferTest_t dataTransferTests [] =
-{
-    {0xB000,INSTR_LDR,AL,AL,1,24,0xABCDEF0123456789,0,REG_SCALE_OFFSET,24,NA,NA,NA,NA,NA,0x23456789,0,0,NA,NA,NA},
-    {0xB001,INSTR_LDR,AL,AL,1,4064,0xABCDEF0123456789,0,IMM12_OFFSET,NA,4068,0,1,0,NA,0xABCDEF01,0,0,NA,NA,NA},
-    {0xB002,INSTR_LDR,AL,AL,1,0,0xABCDEF0123456789,0,IMM12_OFFSET,NA,4,1,0,1,NA,0x23456789,4,0,NA,NA,NA},
-    {0xB003,INSTR_LDR,AL,AL,1,0,0xABCDEF0123456789,0,NO_OFFSET,NA,NA,0,0,0,NA,0x23456789,0,0,NA,NA,NA},
-    {0xB004,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,0,REG_SCALE_OFFSET,4064,NA,NA,NA,NA,NA,0x89,0,0,NA,NA,NA},
-    {0xB005,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,0,IMM12_OFFSET,NA,4065,0,1,0,NA,0x67,0,0,NA,NA,NA},
-    {0xB006,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,0,0,1,0,NA,0x67,4065,0,NA,NA,NA},
-    {0xB007,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,1,0,1,0,NA,0x45,4065,0,NA,NA,NA},
-    {0xB008,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,2,0,1,0,NA,0x23,4065,0,NA,NA,NA},
-    {0xB009,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,1,1,0,1,NA,0x67,4066,0,NA,NA,NA},
-    {0xB010,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,0,NO_OFFSET,NA,NA,0,0,0,NA,0x89,0,0,NA,NA,NA},
-    {0xB011,INSTR_LDRH,AL,AL,1,0,0xABCDEF0123456789,0,IMM8_OFFSET,NA,2,1,0,1,NA,0x6789,2,0,NA,NA,NA},
-    {0xB012,INSTR_LDRH,AL,AL,1,4064,0xABCDEF0123456789,0,REG_OFFSET,4064,0,0,1,0,NA,0x6789,0,0,NA,NA,NA},
-    {0xB013,INSTR_LDRH,AL,AL,1,4064,0xABCDEF0123456789,0,REG_OFFSET,4066,0,0,1,0,NA,0x2345,0,0,NA,NA,NA},
-    {0xB014,INSTR_LDRH,AL,AL,1,0,0xABCDEF0123456789,0,NO_OFFSET,NA,0,0,0,0,NA,0x6789,0,0,NA,NA,NA},
-    {0xB015,INSTR_LDRH,AL,AL,1,0,0xABCDEF0123456789,2,NO_OFFSET,NA,0,0,0,0,NA,0x2345,2,0,NA,NA,NA},
-    {0xB016,INSTR_ADDR_LDR,AL,AL,1,4064,0xABCDEF0123456789,0,IMM12_OFFSET,NA,4064,0,1,0,NA,0xABCDEF0123456789,0,0,NA,NA,NA},
-    {0xB017,INSTR_STR,AL,AL,1,2,0xDEADBEEFDEADBEEF,4,IMM12_OFFSET,NA,4,1,0,1,0xABCDEF0123456789,0xABCDEF0123456789,8,1,2,8,0xDEAD23456789BEEF},
-    {0xB018,INSTR_STR,AL,AL,1,2,0xDEADBEEFDEADBEEF,4,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4,1,2,8,0xDEAD23456789BEEF},
-    {0xB019,INSTR_STR,AL,AL,1,4066,0xDEADBEEFDEADBEEF,4,IMM12_OFFSET,NA,4064,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,4,1,4066,8,0xDEAD23456789BEEF},
-    {0xB020,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,0,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEFDEAD89EF},
-    {0xB021,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,1,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEFDE89BEEF},
-    {0xB022,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,2,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEF89ADBEEF},
-    {0xB023,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,4,1,0,1,0xABCDEF0123456789,0xABCDEF0123456789,5,1,0,8,0xDEADBEEFDEAD89EF},
-    {0xB024,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEFDEAD89EF},
-    {0xB025,INSTR_STRH,AL,AL,1,4066,0xDEADBEEFDEADBEEF,4070,IMM12_OFFSET,NA,2,1,0,1,0xABCDEF0123456789,0xABCDEF0123456789,4072,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB026,INSTR_STRH,AL,AL,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB027,INSTR_STRH,EQ,NE,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEADBEEFDEADBEEF},
-    {0xB028,INSTR_STRH,NE,NE,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB029,INSTR_STRH,NE,EQ,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEADBEEFDEADBEEF},
-    {0xB030,INSTR_STRH,EQ,EQ,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB031,INSTR_STRH,HI,LS,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEADBEEFDEADBEEF},
-    {0xB032,INSTR_STRH,LS,LS,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB033,INSTR_STRH,LS,HI,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEADBEEFDEADBEEF},
-    {0xB034,INSTR_STRH,HI,HI,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB035,INSTR_STRH,CC,HS,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEADBEEFDEADBEEF},
-    {0xB036,INSTR_STRH,CS,HS,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB037,INSTR_STRH,GE,LT,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEADBEEFDEADBEEF},
-    {0xB038,INSTR_STRH,LT,LT,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB039,INSTR_ADDR_STR,AL,AL,1,4064,0xDEADBEEFDEADBEEF,4,IMM12_OFFSET,NA,4060,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,4,1,4064,8,0xABCDEF0123456789},
-};
-
-
-void flushcache()
-{
-    const long base = long(instrMem);
-    const long curr = base + long(instrMemSize);
-    __builtin___clear_cache((char*)base, (char*)curr);
-}
-void dataOpTest(dataOpTest_t test, ARMAssemblerInterface *a64asm, uint32_t Rd = 0,
-                uint32_t Rn = 1, uint32_t Rm = 2, uint32_t Rs = 3)
-{
-    int64_t  regs[NUM_REGS] = {0};
-    int32_t  flags[NUM_FLAGS] = {0};
-    int64_t  savedRegs[NUM_REGS] = {0};
-    uint32_t i;
-    uint32_t op2;
-
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        regs[i] = i;
-    }
-
-    regs[Rd] = test.RdValue;
-    regs[Rn] = test.RnValue;
-    regs[Rs] = test.RsValue;
-    flags[test.preFlag] = 1;
-    a64asm->reset();
-    a64asm->prolog();
-    if(test.immediate == true)
-    {
-        op2 = a64asm->imm(test.immValue);
-    }
-    else if(test.immediate == false && test.shiftAmount == 0)
-    {
-        op2 = Rm;
-        regs[Rm] = test.RmValue;
-    }
-    else
-    {
-        op2 = a64asm->reg_imm(Rm, test.shiftMode, test.shiftAmount);
-        regs[Rm] = test.RmValue;
-    }
-    switch(test.op)
-    {
-    case INSTR_ADD: a64asm->ADD(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_SUB: a64asm->SUB(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_RSB: a64asm->RSB(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_AND: a64asm->AND(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_ORR: a64asm->ORR(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_BIC: a64asm->BIC(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_MUL: a64asm->MUL(test.cond, test.setFlags, Rd,Rm,Rs); break;
-    case INSTR_MLA: a64asm->MLA(test.cond, test.setFlags, Rd,Rm,Rs,Rn); break;
-    case INSTR_CMP: a64asm->CMP(test.cond, Rn,op2); break;
-    case INSTR_MOV: a64asm->MOV(test.cond, test.setFlags,Rd,op2); break;
-    case INSTR_MVN: a64asm->MVN(test.cond, test.setFlags,Rd,op2); break;
-    case INSTR_SMULBB:a64asm->SMULBB(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULBT:a64asm->SMULBT(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULTB:a64asm->SMULTB(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULTT:a64asm->SMULTT(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULWB:a64asm->SMULWB(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULWT:a64asm->SMULWT(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMLABB:a64asm->SMLABB(test.cond, Rd,Rm,Rs,Rn); break;
-    case INSTR_UXTB16:a64asm->UXTB16(test.cond, Rd,Rm,test.shiftAmount); break;
-    case INSTR_UBFX:
-    {
-        int32_t lsb   = test.RsValue;
-        int32_t width = test.RmValue;
-        a64asm->UBFX(test.cond, Rd,Rn,lsb, width);
-        break;
-    }
-    case INSTR_ADDR_ADD: a64asm->ADDR_ADD(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_ADDR_SUB: a64asm->ADDR_SUB(test.cond, test.setFlags, Rd,Rn,op2); break;
-    default: printf("Error"); return;
-    }
-    a64asm->epilog(0);
-    flushcache();
-
-    asm_function_t asm_function = (asm_function_t)(instrMem);
-
-    for(i = 0; i < NUM_REGS; ++i)
-        savedRegs[i] = regs[i];
-
-    asm_test_jacket(asm_function, regs, flags);
-
-    /* Check if all regs except Rd is same */
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        if(i == Rd) continue;
-        if(regs[i] != savedRegs[i])
-        {
-            printf("Test %x failed Reg(%d) tampered Expected(0x%" PRIx64 "),"
-                   "Actual(0x%" PRIx64 ") t\n", test.id, i, savedRegs[i],
-                   regs[i]);
-            return;
-        }
-    }
-
-    if(test.checkRd == 1 && (uint64_t)regs[Rd] != test.postRdValue)
-    {
-        printf("Test %x failed, Expected(%" PRIx64 "), Actual(%" PRIx64 ")\n",
-               test.id, test.postRdValue, regs[Rd]);
-    }
-    else if(test.checkFlag == 1 && flags[test.postFlag] == 0)
-    {
-        printf("Test %x failed Flag(%s) NOT set\n",
-                test.id,cc_code[test.postFlag]);
-    }
-    else
-    {
-        printf("Test %x passed\n", test.id);
-    }
-}
-
-
-void dataTransferTest(dataTransferTest_t test, ARMAssemblerInterface *a64asm,
-                      uint32_t Rd = 0, uint32_t Rn = 1,uint32_t Rm = 2)
-{
-    int64_t regs[NUM_REGS] = {0};
-    int64_t savedRegs[NUM_REGS] = {0};
-    int32_t flags[NUM_FLAGS] = {0};
-    uint32_t i;
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        regs[i] = i;
-    }
-
-    uint32_t op2;
-
-    regs[Rd] = test.RdValue;
-    regs[Rn] = (uint64_t)(&dataMem[test.RnValue]);
-    regs[Rm] = test.RmValue;
-    flags[test.preFlag] = 1;
-
-    if(test.setMem == true)
-    {
-        unsigned char *mem = (unsigned char *)&dataMem[test.memOffset];
-        uint64_t value = test.memValue;
-        for(int j = 0; j < 8; ++j)
-        {
-            mem[j] = value & 0x00FF;
-            value >>= 8;
-        }
-    }
-    a64asm->reset();
-    a64asm->prolog();
-    if(test.offsetType == REG_SCALE_OFFSET)
-    {
-        op2 = a64asm->reg_scale_pre(Rm);
-    }
-    else if(test.offsetType == REG_OFFSET)
-    {
-        op2 = a64asm->reg_pre(Rm);
-    }
-    else if(test.offsetType == IMM12_OFFSET && test.preIndex == true)
-    {
-        op2 = a64asm->immed12_pre(test.immValue, test.writeBack);
-    }
-    else if(test.offsetType == IMM12_OFFSET && test.postIndex == true)
-    {
-        op2 = a64asm->immed12_post(test.immValue);
-    }
-    else if(test.offsetType == IMM8_OFFSET && test.preIndex == true)
-    {
-        op2 = a64asm->immed8_pre(test.immValue, test.writeBack);
-    }
-    else if(test.offsetType == IMM8_OFFSET && test.postIndex == true)
-    {
-        op2 = a64asm->immed8_post(test.immValue);
-    }
-    else if(test.offsetType == NO_OFFSET)
-    {
-        op2 = a64asm->__immed12_pre(0);
-    }
-    else
-    {
-        printf("Error - Unknown offset\n"); return;
-    }
-
-    switch(test.op)
-    {
-    case INSTR_LDR:  a64asm->LDR(test.cond, Rd,Rn,op2); break;
-    case INSTR_LDRB: a64asm->LDRB(test.cond, Rd,Rn,op2); break;
-    case INSTR_LDRH: a64asm->LDRH(test.cond, Rd,Rn,op2); break;
-    case INSTR_ADDR_LDR: a64asm->ADDR_LDR(test.cond, Rd,Rn,op2); break;
-    case INSTR_STR:  a64asm->STR(test.cond, Rd,Rn,op2); break;
-    case INSTR_STRB: a64asm->STRB(test.cond, Rd,Rn,op2); break;
-    case INSTR_STRH: a64asm->STRH(test.cond, Rd,Rn,op2); break;
-    case INSTR_ADDR_STR: a64asm->ADDR_STR(test.cond, Rd,Rn,op2); break;
-    default: printf("Error"); return;
-    }
-    a64asm->epilog(0);
-    flushcache();
-
-    asm_function_t asm_function = (asm_function_t)(instrMem);
-
-    for(i = 0; i < NUM_REGS; ++i)
-        savedRegs[i] = regs[i];
-
-
-    asm_test_jacket(asm_function, regs, flags);
-
-    /* Check if all regs except Rd/Rn are same */
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        if(i == Rd || i == Rn) continue;
-        if(regs[i] != savedRegs[i])
-        {
-            printf("Test %x failed Reg(%d) tampered"
-                   " Expected(0x%" PRIx64 "), Actual(0x%" PRIx64 ") t\n",
-                   test.id, i, savedRegs[i], regs[i]);
-            return;
-        }
-    }
-
-    if((uint64_t)regs[Rd] != test.postRdValue)
-    {
-        printf("Test %x failed, "
-               "Expected in Rd(0x%" PRIx64 "), Actual(0x%" PRIx64 ")\n",
-               test.id, test.postRdValue, regs[Rd]);
-    }
-    else if((uint64_t)regs[Rn] != (uint64_t)(&dataMem[test.postRnValue]))
-    {
-        printf("Test %x failed, "
-               "Expected in Rn(0x%" PRIx64 "), Actual(0x%" PRIx64 ")\n",
-               test.id, test.postRnValue, regs[Rn] - (uint64_t)dataMem);
-    }
-    else if(test.checkMem == true)
-    {
-        unsigned char *addr = (unsigned char *)&dataMem[test.postMemOffset];
-        uint64_t value;
-        value = 0;
-        for(uint32_t j = 0; j < test.postMemLength; ++j)
-            value = (value << 8) | addr[test.postMemLength-j-1];
-        if(value != test.postMemValue)
-        {
-            printf("Test %x failed, "
-                   "Expected in Mem(0x%" PRIx64 "), Actual(0x%" PRIx64 ")\n",
-                   test.id, test.postMemValue, value);
-        }
-        else
-        {
-            printf("Test %x passed\n", test.id);
-        }
-    }
-    else
-    {
-        printf("Test %x passed\n", test.id);
-    }
-}
-
-void dataTransferLDMSTM(ARMAssemblerInterface *a64asm)
-{
-    int64_t regs[NUM_REGS] = {0};
-    int32_t flags[NUM_FLAGS] = {0};
-    const uint32_t numArmv7Regs = 16;
-
-    uint32_t Rn = ARMAssemblerInterface::SP;
-
-    uint32_t patterns[] =
-    {
-        0x5A03,
-        0x4CF0,
-        0x1EA6,
-        0x0DBF,
-    };
-
-    uint32_t i, j;
-    for(i = 0; i < sizeof(patterns)/sizeof(uint32_t); ++i)
-    {
-        for(j = 0; j < NUM_REGS; ++j)
-        {
-            regs[j] = j;
-        }
-        a64asm->reset();
-        a64asm->prolog();
-        a64asm->STM(AL,ARMAssemblerInterface::DB,Rn,1,patterns[i]);
-        for(j = 0; j < numArmv7Regs; ++j)
-        {
-            uint32_t op2 = a64asm->imm(0x31);
-            a64asm->MOV(AL, 0,j,op2);
-        }
-        a64asm->LDM(AL,ARMAssemblerInterface::IA,Rn,1,patterns[i]);
-        a64asm->epilog(0);
-        flushcache();
-
-        asm_function_t asm_function = (asm_function_t)(instrMem);
-        asm_test_jacket(asm_function, regs, flags);
-
-        for(j = 0; j < numArmv7Regs; ++j)
-        {
-            if((1 << j) & patterns[i])
-            {
-                if(regs[j] != j)
-                {
-                    printf("LDM/STM Test %x failed "
-                           "Reg%d expected(0x%x) Actual(0x%" PRIx64 ") \n",
-                           patterns[i], j, j, regs[j]);
-                    break;
-                }
-            }
-        }
-        if(j == numArmv7Regs)
-            printf("LDM/STM Test %x passed\n", patterns[i]);
-    }
-}
-
-int main(void)
-{
-    uint32_t i;
-
-    /* Allocate memory to store instructions generated by ArmToArm64Assembler */
-    {
-        int fd = ashmem_create_region("code cache", instrMemSize);
-        if(fd < 0)
-            printf("Creating code cache, ashmem_create_region "
-                                "failed with error '%s'", strerror(errno));
-        instrMem = mmap(NULL, instrMemSize,
-                                    PROT_READ | PROT_WRITE | PROT_EXEC,
-                                MAP_PRIVATE, fd, 0);
-    }
-
-    ArmToArm64Assembler a64asm(instrMem);
-
-    if(TESTS_DATAOP_ENABLE)
-    {
-        printf("Running data processing tests\n");
-        for(i = 0; i < sizeof(dataOpTests)/sizeof(dataOpTest_t); ++i)
-            dataOpTest(dataOpTests[i], &a64asm);
-    }
-
-    if(TESTS_DATATRANSFER_ENABLE)
-    {
-        printf("Running data transfer tests\n");
-        for(i = 0; i < sizeof(dataTransferTests)/sizeof(dataTransferTest_t); ++i)
-            dataTransferTest(dataTransferTests[i], &a64asm);
-    }
-
-    if(TESTS_LDMSTM_ENABLE)
-    {
-        printf("Running LDM/STM tests\n");
-        dataTransferLDMSTM(&a64asm);
-    }
-
-
-    if(TESTS_REG_CORRUPTION_ENABLE)
-    {
-        uint32_t reg_list[] = {0,1,12,14};
-        uint32_t Rd, Rm, Rs, Rn;
-        uint32_t i;
-        uint32_t numRegs = sizeof(reg_list)/sizeof(uint32_t);
-
-        printf("Running Register corruption tests\n");
-        for(i = 0; i < sizeof(dataOpTests)/sizeof(dataOpTest_t); ++i)
-        {
-            for(Rd = 0; Rd < numRegs; ++Rd)
-            {
-                for(Rn = 0; Rn < numRegs; ++Rn)
-                {
-                    for(Rm = 0; Rm < numRegs; ++Rm)
-                    {
-                        for(Rs = 0; Rs < numRegs;++Rs)
-                        {
-                            if(Rd == Rn || Rd == Rm || Rd == Rs) continue;
-                            if(Rn == Rm || Rn == Rs) continue;
-                            if(Rm == Rs) continue;
-                            printf("Testing combination Rd(%d), Rn(%d),"
-                                   " Rm(%d), Rs(%d): ",
-                                   reg_list[Rd], reg_list[Rn], reg_list[Rm], reg_list[Rs]);
-                            dataOpTest(dataOpTests[i], &a64asm, reg_list[Rd],
-                                       reg_list[Rn], reg_list[Rm], reg_list[Rs]);
-                        }
-                    }
-                }
-            }
-        }
-    }
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-arm64/assembler/asm_test_jacket.S b/libpixelflinger/tests/arch-arm64/assembler/asm_test_jacket.S
deleted file mode 100644
index 3f900f8..0000000
--- a/libpixelflinger/tests/arch-arm64/assembler/asm_test_jacket.S
+++ /dev/null
@@ -1,221 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-    .text
-    .balign 0
-
-    .global asm_test_jacket
-
-    // Set the register and flag values
-    // Calls the asm function
-    // Reads the register/flag values to output register
-
-    // Parameters
-    // X0 - Function to jump
-    // X1 - register values array
-    // X2 - flag values array
-asm_test_jacket:
-    // Save registers to stack
-    stp    x29, x30, [sp,#-16]!
-    stp    x27, x28, [sp,#-16]!
-
-    mov x30, x0
-    mov x28, x1
-    mov x27, x2
-
-    //Set the flags based on flag array
-    //EQ
-    ldr w0, [x27,#0]
-    cmp w0, #1
-    b.ne bt_aeq
-    cmp w0,#1
-    b bt_end
-bt_aeq:
-
-    //NE
-    ldr w0, [x27,#4]
-    cmp w0, #1
-    b.ne bt_ane
-    cmp w0,#2
-    b bt_end
-bt_ane:
-
-    //CS
-    ldr w0, [x27,#8]
-    cmp w0, #1
-    b.ne bt_acs
-    cmp w0,#0
-    b bt_end
-bt_acs:
-
-    //CC
-    ldr w0, [x27,#12]
-    cmp w0, #1
-    b.ne bt_acc
-    cmp w0,#2
-    b bt_end
-bt_acc:
-
-    //MI
-    ldr w0, [x27,#16]
-    cmp w0, #1
-    b.ne bt_ami
-    subs w0,w0,#2
-    b bt_end
-bt_ami:
-
-    //PL
-    ldr w0, [x27,#20]
-    cmp w0, #1
-    b.ne bt_apl
-    subs w0,w0,#0
-    b bt_end
-bt_apl:
-    //HI - (C==1) && (Z==0)
-    ldr w0, [x27,#32]
-    cmp w0, #1
-    b.ne bt_ahi
-    cmp w0,#0
-    b bt_end
-bt_ahi:
-
-    //LS - (C==0) || (Z==1)
-    ldr w0, [x27,#36]
-    cmp w0, #1
-    b.ne bt_als
-    cmp w0,#1
-    b bt_end
-bt_als:
-
-    //GE
-    ldr w0, [x27,#40]
-    cmp w0, #1
-    b.ne bt_age
-    cmp w0,#0
-    b bt_end
-bt_age:
-
-    //LT
-    ldr w0, [x27,#44]
-    cmp w0, #1
-    b.ne bt_alt
-    cmp w0,#2
-    b bt_end
-bt_alt:
-
-    //GT
-    ldr w0, [x27,#48]
-    cmp w0, #1
-    b.ne bt_agt
-    cmp w0,#0
-    b bt_end
-bt_agt:
-
-    //LE
-    ldr w0, [x27,#52]
-    cmp w0, #1
-    b.ne bt_ale
-    cmp w0,#2
-    b bt_end
-bt_ale:
-
-
-bt_end:
-
-    // Load the registers from reg array
-    ldr x0, [x28,#0]
-    ldr x1, [x28,#8]
-    ldr x2, [x28,#16]
-    ldr x3, [x28,#24]
-    ldr x4, [x28,#32]
-    ldr x5, [x28,#40]
-    ldr x6, [x28,#48]
-    ldr x7, [x28,#56]
-    ldr x8, [x28,#64]
-    ldr x9, [x28,#72]
-    ldr x10, [x28,#80]
-    ldr x11, [x28,#88]
-    ldr x12, [x28,#96]
-    ldr x14, [x28,#112]
-
-    // Call the function
-    blr X30
-
-    // Save the registers to reg array
-    str x0, [x28,#0]
-    str x1, [x28,#8]
-    str x2, [x28,#16]
-    str x3, [x28,#24]
-    str x4, [x28,#32]
-    str x5, [x28,#40]
-    str x6, [x28,#48]
-    str x7, [x28,#56]
-    str x8, [x28,#64]
-    str x9, [x28,#72]
-    str x10, [x28,#80]
-    str x11, [x28,#88]
-    str x12, [x28,#96]
-    str x14, [x28,#112]
-
-    //Set the flags array based on result flags
-    movz w0, #0
-    movz w1, #1
-    csel w2, w1, w0, EQ
-    str w2, [x27,#0]
-    csel w2, w1, w0, NE
-    str w2, [x27,#4]
-    csel w2, w1, w0, CS
-    str w2, [x27,#8]
-    csel w2, w1, w0, CC
-    str w2, [x27,#12]
-    csel w2, w1, w0, MI
-    str w2, [x27,#16]
-    csel w2, w1, w0, PL
-    str w2, [x27,#20]
-    csel w2, w1, w0, VS
-    str w2, [x27,#24]
-    csel w2, w1, w0, VC
-    str w2, [x27,#28]
-    csel w2, w1, w0, HI
-    str w2, [x27,#32]
-    csel w2, w1, w0, LS
-    str w2, [x27,#36]
-    csel w2, w1, w0, GE
-    str w2, [x27,#40]
-    csel w2, w1, w0, LT
-    str w2, [x27,#44]
-    csel w2, w1, w0, GT
-    str w2, [x27,#48]
-    csel w2, w1, w0, LE
-    str w2, [x27,#52]
-
-    // Restore registers from stack
-    ldp    x27, x28, [sp],#16
-    ldp    x29, x30, [sp],#16
-    ret
-
diff --git a/libpixelflinger/tests/arch-arm64/col32cb16blend/Android.bp b/libpixelflinger/tests/arch-arm64/col32cb16blend/Android.bp
deleted file mode 100644
index e640aeb..0000000
--- a/libpixelflinger/tests/arch-arm64/col32cb16blend/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-arm64-col32cb16blend",
-    defaults: ["pixelflinger-tests-arm64"],
-
-    srcs: ["col32cb16blend_test.c"],
-}
diff --git a/libpixelflinger/tests/arch-arm64/col32cb16blend/col32cb16blend_test.c b/libpixelflinger/tests/arch-arm64/col32cb16blend/col32cb16blend_test.c
deleted file mode 100644
index c6a3017..0000000
--- a/libpixelflinger/tests/arch-arm64/col32cb16blend/col32cb16blend_test.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-
-
-#define ARGB_8888_MAX   0xFFFFFFFF
-#define ARGB_8888_MIN   0x00000000
-#define RGB_565_MAX 0xFFFF
-#define RGB_565_MIN 0x0000
-
-struct test_t
-{
-    char name[256];
-    uint32_t dst_color;
-    uint32_t src_color;
-    size_t count;
-};
-
-struct test_t tests[] =
-{
-    {"Count 1, Src=Max, Dst=Min", ARGB_8888_MAX, RGB_565_MIN, 1},
-    {"Count 2, Src=Min, Dst=Max", ARGB_8888_MIN, RGB_565_MAX, 2},
-    {"Count 3, Src=Max, Dst=Max", ARGB_8888_MAX, RGB_565_MAX, 3},
-    {"Count 4, Src=Min, Dst=Min", ARGB_8888_MAX, RGB_565_MAX, 4},
-    {"Count 1, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 1},
-    {"Count 2, Src=Rand, Dst=Rand", 0xABCDEF12, 0x2345, 2},
-    {"Count 3, Src=Rand, Dst=Rand", 0x11111111, 0xEDFE, 3},
-    {"Count 4, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 4},
-    {"Count 5, Src=Rand, Dst=Rand", 0xEFEFFEFE, 0xFACC, 5},
-    {"Count 10, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 10}
-};
-
-void scanline_col32cb16blend_arm64(uint16_t *dst, int32_t src, size_t count);
-void scanline_col32cb16blend_c(uint16_t * dst, int32_t src, size_t count)
-{
-    int srcAlpha = (src>>24);
-    int f = 0x100 - (srcAlpha + (srcAlpha>>7));
-    while (count--)
-    {
-        uint16_t d = *dst;
-        int dstR = (d>>11)&0x1f;
-        int dstG = (d>>5)&0x3f;
-        int dstB = (d)&0x1f;
-        int srcR = (src >> (   3))&0x1F;
-        int srcG = (src >> ( 8+2))&0x3F;
-        int srcB = (src >> (16+3))&0x1F;
-        srcR += (f*dstR)>>8;
-        srcG += (f*dstG)>>8;
-        srcB += (f*dstB)>>8;
-        *dst++ = (uint16_t)((srcR<<11)|(srcG<<5)|srcB);
-    }
-}
-
-void scanline_col32cb16blend_test()
-{
-    uint16_t dst_c[16], dst_asm[16];
-    uint32_t i, j;
-
-    for(i = 0; i < sizeof(tests)/sizeof(struct test_t); ++i)
-    {
-        struct test_t test = tests[i];
-
-        printf("Testing - %s:",test.name);
-
-        memset(dst_c, 0, sizeof(dst_c));
-        memset(dst_asm, 0, sizeof(dst_asm));
-
-        for(j = 0; j < test.count; ++j)
-        {
-            dst_c[j]   = test.dst_color;
-            dst_asm[j] = test.dst_color;
-        }
-
-
-        scanline_col32cb16blend_c(dst_c, test.src_color, test.count);
-        scanline_col32cb16blend_arm64(dst_asm, test.src_color, test.count);
-
-
-        if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-
-        for(j = 0; j < test.count; ++j)
-        {
-            printf("dst_c[%d] = %x, dst_asm[%d] = %x \n", j, dst_c[j], j, dst_asm[j]);
-        }
-    }
-}
-
-int main()
-{
-    scanline_col32cb16blend_test();
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-arm64/disassembler/Android.bp b/libpixelflinger/tests/arch-arm64/disassembler/Android.bp
deleted file mode 100644
index 38dc99a..0000000
--- a/libpixelflinger/tests/arch-arm64/disassembler/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-arm64-disassembler-test",
-    defaults: ["pixelflinger-tests-arm64"],
-
-    srcs: ["arm64_diassembler_test.cpp"],
-}
diff --git a/libpixelflinger/tests/arch-arm64/disassembler/arm64_diassembler_test.cpp b/libpixelflinger/tests/arch-arm64/disassembler/arm64_diassembler_test.cpp
deleted file mode 100644
index af3183b..0000000
--- a/libpixelflinger/tests/arch-arm64/disassembler/arm64_diassembler_test.cpp
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <stdio.h>
-#include <inttypes.h>
-#include <string.h>
-
-int arm64_disassemble(uint32_t code, char* instr);
-
-struct test_table_entry_t
-{
-     uint32_t code;
-     const char *instr;
-};
-static test_table_entry_t test_table [] =
-{
-    { 0x91000240, "add x0, x18, #0x0, lsl #0"         },
-    { 0x9140041f, "add sp, x0, #0x1, lsl #12"         },
-    { 0x917ffff2, "add x18, sp, #0xfff, lsl #12"      },
-
-    { 0xd13ffe40, "sub x0, x18, #0xfff, lsl #0"       },
-    { 0xd140001f, "sub sp, x0, #0x0, lsl #12"         },
-    { 0xd14007f2, "sub x18, sp, #0x1, lsl #12"        },
-
-    { 0x8b1e0200, "add x0, x16, x30, lsl #0"          },
-    { 0x8b507fdf, "add xzr, x30, x16, lsr #31"        },
-    { 0x8b8043f0, "add x16, xzr, x0, asr #16"         },
-    { 0x8b5f401e, "add x30, x0, xzr, lsr #16"         },
-
-
-    { 0x4b1e0200, "sub w0, w16, w30, lsl #0"          },
-    { 0x4b507fdf, "sub wzr, w30, w16, lsr #31"        },
-    { 0x4b8043f0, "sub w16, wzr, w0, asr #16"         },
-    { 0x4b5f401e, "sub w30, w0, wzr, lsr #16"         },
-
-    { 0x6b1e0200, "subs w0, w16, w30, lsl #0"         },
-    { 0x6b507fdf, "subs wzr, w30, w16, lsr #31"       },
-    { 0x6b8043f0, "subs w16, wzr, w0, asr #16"        },
-    { 0x6b5f401e, "subs w30, w0, wzr, lsr #16"        },
-
-    { 0x0a1e0200, "and w0, w16, w30, lsl #0"          },
-    { 0x0a507fdf, "and wzr, w30, w16, lsr #31"        },
-    { 0x0a8043f0, "and w16, wzr, w0, asr #16"         },
-    { 0x0adf401e, "and w30, w0, wzr, ror #16"         },
-
-    { 0x2a1e0200, "orr w0, w16, w30, lsl #0"          },
-    { 0x2a507fdf, "orr wzr, w30, w16, lsr #31"        },
-    { 0x2a8043f0, "orr w16, wzr, w0, asr #16"         },
-    { 0x2adf401e, "orr w30, w0, wzr, ror #16"         },
-
-    { 0x2a3e0200, "orn w0, w16, w30, lsl #0"          },
-    { 0x2a707fdf, "orn wzr, w30, w16, lsr #31"        },
-    { 0x2aa043f0, "orn w16, wzr, w0, asr #16"         },
-    { 0x2aff401e, "orn w30, w0, wzr, ror #16"         },
-
-    { 0x729fffe0, "movk w0, #0xffff, lsl #0"          },
-    { 0x72a0000f, "movk w15, #0x0, lsl #16"           },
-    { 0x7281fffe, "movk w30, #0xfff, lsl #0"          },
-    { 0x72a0003f, "movk wzr, #0x1, lsl #16"           },
-
-    { 0x529fffe0, "movz w0, #0xffff, lsl #0"          },
-    { 0x52a0000f, "movz w15, #0x0, lsl #16"           },
-    { 0x5281fffe, "movz w30, #0xfff, lsl #0"          },
-    { 0x52a0003f, "movz wzr, #0x1, lsl #16"           },
-
-    { 0xd29fffe0, "movz x0, #0xffff, lsl #0"          },
-    { 0xd2a0000f, "movz x15, #0x0, lsl #16"           },
-    { 0xd2c1fffe, "movz x30, #0xfff, lsl #32"         },
-    { 0xd2e0003f, "movz xzr, #0x1, lsl #48"           },
-
-    { 0x1a8003e0, "csel w0, wzr, w0, eq"              },
-    { 0x1a831001, "csel w1, w0, w3, ne"               },
-    { 0x1a9e2022, "csel w2, w1, w30, cs"              },
-    { 0x1a8a3083, "csel w3, w4, w10, cc"              },
-    { 0x1a8b40e4, "csel w4, w7, w11, mi"              },
-    { 0x1a9b5105, "csel w5, w8, w27, pl"              },
-    { 0x1a846167, "csel w7, w11, w4, vs"              },
-    { 0x1a8671c8, "csel w8, w14, w6, vc"              },
-    { 0x1a878289, "csel w9, w20, w7, hi"              },
-    { 0x1a8c92aa, "csel w10, w21, w12, ls"            },
-    { 0x1a8ea2ce, "csel w14, w22, w14, ge"            },
-    { 0x1a9fb3b2, "csel w18, w29, wzr, lt"            },
-    { 0x1a9fc3d8, "csel w24, w30, wzr, gt"            },
-    { 0x1a82d17e, "csel w30, w11, w2, le"             },
-    { 0x1a81e19f, "csel wzr, w12, w1, al"             },
-
-    { 0x9a8003e0, "csel x0, xzr, x0, eq"              },
-    { 0x9a831001, "csel x1, x0, x3, ne"               },
-    { 0x9a9e2022, "csel x2, x1, x30, cs"              },
-    { 0x9a8a3083, "csel x3, x4, x10, cc"              },
-    { 0x9a8b40e4, "csel x4, x7, x11, mi"              },
-    { 0x9a9b5105, "csel x5, x8, x27, pl"              },
-    { 0x9a846167, "csel x7, x11, x4, vs"              },
-    { 0x9a8671c8, "csel x8, x14, x6, vc"              },
-    { 0x9a878289, "csel x9, x20, x7, hi"              },
-    { 0x9a8c92aa, "csel x10, x21, x12, ls"            },
-    { 0x9a8ea2ce, "csel x14, x22, x14, ge"            },
-    { 0x9a9fb3b2, "csel x18, x29, xzr, lt"            },
-    { 0x9a9fc3d8, "csel x24, x30, xzr, gt"            },
-    { 0x9a82d17e, "csel x30, x11, x2, le"             },
-    { 0x9a81e19f, "csel xzr, x12, x1, al"             },
-
-    { 0x5a8003e0, "csinv w0, wzr, w0, eq"             },
-    { 0x5a831001, "csinv w1, w0, w3, ne"              },
-    { 0x5a9e2022, "csinv w2, w1, w30, cs"             },
-    { 0x5a8a3083, "csinv w3, w4, w10, cc"             },
-    { 0x5a8b40e4, "csinv w4, w7, w11, mi"             },
-    { 0x5a9b5105, "csinv w5, w8, w27, pl"             },
-    { 0x5a846167, "csinv w7, w11, w4, vs"             },
-    { 0x5a8671c8, "csinv w8, w14, w6, vc"             },
-    { 0x5a878289, "csinv w9, w20, w7, hi"             },
-    { 0x5a8c92aa, "csinv w10, w21, w12, ls"           },
-    { 0x5a8ea2ce, "csinv w14, w22, w14, ge"           },
-    { 0x5a9fb3b2, "csinv w18, w29, wzr, lt"           },
-    { 0x5a9fc3d8, "csinv w24, w30, wzr, gt"           },
-    { 0x5a82d17e, "csinv w30, w11, w2, le"            },
-    { 0x5a81e19f, "csinv wzr, w12, w1, al"            },
-
-    { 0x1b1f3fc0, "madd w0, w30, wzr, w15"            },
-    { 0x1b0079ef, "madd w15, w15, w0, w30"            },
-    { 0x1b0f7ffe, "madd w30, wzr, w15, wzr"           },
-    { 0x1b1e001f, "madd wzr, w0, w30, w0"             },
-
-    { 0x9b3f3fc0, "smaddl x0, w30, wzr, x15"          },
-    { 0x9b2079ef, "smaddl x15, w15, w0, x30"          },
-    { 0x9b2f7ffe, "smaddl x30, wzr, w15, xzr"         },
-    { 0x9b3e001f, "smaddl xzr, w0, w30, x0"           },
-
-    { 0xd65f0000, "ret x0"                            },
-    { 0xd65f01e0, "ret x15"                           },
-    { 0xd65f03c0, "ret x30"                           },
-    { 0xd65f03e0, "ret xzr"                           },
-
-    { 0xb87f4be0, "ldr w0, [sp, wzr, uxtw #0]"        },
-    { 0xb87ed80f, "ldr w15, [x0, w30, sxtw #2]"       },
-    { 0xb86fc9fe, "ldr w30, [x15, w15, sxtw #0]"      },
-    { 0xb8605bdf, "ldr wzr, [x30, w0, uxtw #2]"       },
-    { 0xb87febe0, "ldr w0, [sp, xzr, sxtx #0]"        },
-    { 0xb87e780f, "ldr w15, [x0, x30, lsl #2]"        },
-    { 0xb86f69fe, "ldr w30, [x15, x15, lsl #0]"       },
-    { 0xb860fbdf, "ldr wzr, [x30, x0, sxtx #2]"       },
-
-    { 0xb83f4be0, "str w0, [sp, wzr, uxtw #0]"        },
-    { 0xb83ed80f, "str w15, [x0, w30, sxtw #2]"       },
-    { 0xb82fc9fe, "str w30, [x15, w15, sxtw #0]"      },
-    { 0xb8205bdf, "str wzr, [x30, w0, uxtw #2]"       },
-    { 0xb83febe0, "str w0, [sp, xzr, sxtx #0]"        },
-    { 0xb83e780f, "str w15, [x0, x30, lsl #2]"        },
-    { 0xb82f69fe, "str w30, [x15, x15, lsl #0]"       },
-    { 0xb820fbdf, "str wzr, [x30, x0, sxtx #2]"       },
-
-    { 0x787f4be0, "ldrh w0, [sp, wzr, uxtw #0]"       },
-    { 0x787ed80f, "ldrh w15, [x0, w30, sxtw #1]"      },
-    { 0x786fc9fe, "ldrh w30, [x15, w15, sxtw #0]"     },
-    { 0x78605bdf, "ldrh wzr, [x30, w0, uxtw #1]"      },
-    { 0x787febe0, "ldrh w0, [sp, xzr, sxtx #0]"       },
-    { 0x787e780f, "ldrh w15, [x0, x30, lsl #1]"       },
-    { 0x786f69fe, "ldrh w30, [x15, x15, lsl #0]"      },
-    { 0x7860fbdf, "ldrh wzr, [x30, x0, sxtx #1]"      },
-
-    { 0x783f4be0, "strh w0, [sp, wzr, uxtw #0]"       },
-    { 0x783ed80f, "strh w15, [x0, w30, sxtw #1]"      },
-    { 0x782fc9fe, "strh w30, [x15, w15, sxtw #0]"     },
-    { 0x78205bdf, "strh wzr, [x30, w0, uxtw #1]"      },
-    { 0x783febe0, "strh w0, [sp, xzr, sxtx #0]"       },
-    { 0x783e780f, "strh w15, [x0, x30, lsl #1]"       },
-    { 0x782f69fe, "strh w30, [x15, x15, lsl #0]"      },
-    { 0x7820fbdf, "strh wzr, [x30, x0, sxtx #1]"      },
-
-    { 0x387f5be0, "ldrb w0, [sp, wzr, uxtw #0]"       },
-    { 0x387ec80f, "ldrb w15, [x0, w30, sxtw ]"        },
-    { 0x386fd9fe, "ldrb w30, [x15, w15, sxtw #0]"     },
-    { 0x38604bdf, "ldrb wzr, [x30, w0, uxtw ]"        },
-    { 0x387ffbe0, "ldrb w0, [sp, xzr, sxtx #0]"       },
-    { 0x387e780f, "ldrb w15, [x0, x30, lsl #0]"       },
-    { 0x386f79fe, "ldrb w30, [x15, x15, lsl #0]"      },
-    { 0x3860ebdf, "ldrb wzr, [x30, x0, sxtx ]"        },
-
-    { 0x383f5be0, "strb w0, [sp, wzr, uxtw #0]"       },
-    { 0x383ec80f, "strb w15, [x0, w30, sxtw ]"        },
-    { 0x382fd9fe, "strb w30, [x15, w15, sxtw #0]"     },
-    { 0x38204bdf, "strb wzr, [x30, w0, uxtw ]"        },
-    { 0x383ffbe0, "strb w0, [sp, xzr, sxtx #0]"       },
-    { 0x383e780f, "strb w15, [x0, x30, lsl #0]"       },
-    { 0x382f79fe, "strb w30, [x15, x15, lsl #0]"      },
-    { 0x3820ebdf, "strb wzr, [x30, x0, sxtx ]"        },
-
-    { 0xf87f4be0, "ldr x0, [sp, wzr, uxtw #0]"        },
-    { 0xf87ed80f, "ldr x15, [x0, w30, sxtw #3]"       },
-    { 0xf86fc9fe, "ldr x30, [x15, w15, sxtw #0]"      },
-    { 0xf8605bdf, "ldr xzr, [x30, w0, uxtw #3]"       },
-    { 0xf87febe0, "ldr x0, [sp, xzr, sxtx #0]"        },
-    { 0xf87e780f, "ldr x15, [x0, x30, lsl #3]"        },
-    { 0xf86f69fe, "ldr x30, [x15, x15, lsl #0]"       },
-    { 0xf860fbdf, "ldr xzr, [x30, x0, sxtx #3]"       },
-
-    { 0xf83f4be0, "str x0, [sp, wzr, uxtw #0]"        },
-    { 0xf83ed80f, "str x15, [x0, w30, sxtw #3]"       },
-    { 0xf82fc9fe, "str x30, [x15, w15, sxtw #0]"      },
-    { 0xf8205bdf, "str xzr, [x30, w0, uxtw #3]"       },
-    { 0xf83febe0, "str x0, [sp, xzr, sxtx #0]"        },
-    { 0xf83e780f, "str x15, [x0, x30, lsl #3]"        },
-    { 0xf82f69fe, "str x30, [x15, x15, lsl #0]"       },
-    { 0xf820fbdf, "str xzr, [x30, x0, sxtx #3]"       },
-
-    { 0xb85007e0, "ldr w0, [sp], #-256"               },
-    { 0xb840040f, "ldr w15, [x0], #0"                 },
-    { 0xb84015fe, "ldr w30, [x15], #1"                },
-    { 0xb84ff7df, "ldr wzr, [x30], #255"              },
-    { 0xb8100fe0, "str w0, [sp, #-256]!"              },
-    { 0xb8000c0f, "str w15, [x0, #0]!"                },
-    { 0xb8001dfe, "str w30, [x15, #1]!"               },
-    { 0xb80fffdf, "str wzr, [x30, #255]!"             },
-
-    { 0x13017be0, "sbfm w0, wzr, #1, #30"             },
-    { 0x131e7fcf, "sbfm w15, w30, #30, #31"           },
-    { 0x131f01fe, "sbfm w30, w15, #31, #0"            },
-    { 0x1300041f, "sbfm wzr, w0, #0, #1"              },
-
-    { 0x53017be0, "ubfm w0, wzr, #1, #30"             },
-    { 0x531e7fcf, "ubfm w15, w30, #30, #31"           },
-    { 0x531f01fe, "ubfm w30, w15, #31, #0"            },
-    { 0x5300041f, "ubfm wzr, w0, #0, #1"              },
-    { 0xd3417fe0, "ubfm x0, xzr, #1, #31"             },
-    { 0xd35fffcf, "ubfm x15, x30, #31, #63"           },
-    { 0xd35f01fe, "ubfm x30, x15, #31, #0"            },
-    { 0xd340041f, "ubfm xzr, x0, #0, #1"              },
-
-    { 0x139e7be0, "extr w0, wzr, w30, #30"            },
-    { 0x138f7fcf, "extr w15, w30, w15, #31"           },
-    { 0x138001fe, "extr w30, w15, w0, #0"             },
-    { 0x139f041f, "extr wzr, w0, wzr, #1"             },
-
-    { 0x54000020, "b.eq #.+4"                         },
-    { 0x54000201, "b.ne #.+64"                        },
-    { 0x54000802, "b.cs #.+256"                       },
-    { 0x54002003, "b.cc #.+1024"                      },
-    { 0x54008004, "b.mi #.+4096"                      },
-    { 0x54ffffe5, "b.pl #.-4"                         },
-    { 0x54ffff06, "b.vs #.-32"                        },
-    { 0x54fffc07, "b.vc #.-128"                       },
-    { 0x54fff008, "b.hi #.-512"                       },
-    { 0x54000049, "b.ls #.+8"                         },
-    { 0x5400006a, "b.ge #.+12"                        },
-    { 0x5400008b, "b.lt #.+16"                        },
-    { 0x54ffffcc, "b.gt #.-8"                         },
-    { 0x54ffffad, "b.le #.-12"                        },
-    { 0x54ffff8e, "b.al #.-16"                        },
-
-    { 0x8b2001e0, "add x0, x15, w0, uxtb #0"          },
-    { 0x8b2f27cf, "add x15, x30, w15, uxth #1"        },
-    { 0x8b3e4bfe, "add x30, sp, w30, uxtw #2"         },
-    { 0x8b3f6c1f, "add sp, x0, xzr, uxtx #3"          },
-    { 0x8b2091e0, "add x0, x15, w0, sxtb #4"          },
-    { 0x8b2fa3cf, "add x15, x30, w15, sxth #0"        },
-    { 0x8b3ec7fe, "add x30, sp, w30, sxtw #1"         },
-    { 0x8b3fe81f, "add sp, x0, xzr, sxtx #2"          },
-
-    { 0xcb2001e0, "sub x0, x15, w0, uxtb #0"          },
-    { 0xcb2f27cf, "sub x15, x30, w15, uxth #1"        },
-    { 0xcb3e4bfe, "sub x30, sp, w30, uxtw #2"         },
-    { 0xcb3f6c1f, "sub sp, x0, xzr, uxtx #3"          },
-    { 0xcb2091e0, "sub x0, x15, w0, sxtb #4"          },
-    { 0xcb2fa3cf, "sub x15, x30, w15, sxth #0"        },
-    { 0xcb3ec7fe, "sub x30, sp, w30, sxtw #1"         },
-    { 0xcb3fe81f, "sub sp, x0, xzr, sxtx #2"          }
-};
-
-int main()
-{
-    char instr[256];
-    uint32_t failed = 0;
-    for(uint32_t i = 0; i < sizeof(test_table)/sizeof(test_table_entry_t); ++i)
-    {
-        test_table_entry_t *test;
-        test = &test_table[i];
-        arm64_disassemble(test->code, instr);
-        if(strcmp(instr, test->instr) != 0)
-        {
-            printf("Test Failed \n"
-                   "Code     : 0x%0x\n"
-                   "Expected : %s\n"
-                   "Actual   : %s\n", test->code, test->instr, instr);
-            failed++;
-        }
-    }
-    if(failed == 0)
-    {
-        printf("All tests PASSED\n");
-        return 0;
-    }
-    else
-    {
-        printf("%d tests FAILED\n", failed);
-        return -1;
-    }
-}
diff --git a/libpixelflinger/tests/arch-arm64/t32cb16blend/Android.bp b/libpixelflinger/tests/arch-arm64/t32cb16blend/Android.bp
deleted file mode 100644
index 9d060d1..0000000
--- a/libpixelflinger/tests/arch-arm64/t32cb16blend/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-arm64-t32cb16blend",
-    defaults: ["pixelflinger-tests-arm64"],
-
-    srcs: ["t32cb16blend_test.c"],
-}
diff --git a/libpixelflinger/tests/arch-arm64/t32cb16blend/t32cb16blend_test.c b/libpixelflinger/tests/arch-arm64/t32cb16blend/t32cb16blend_test.c
deleted file mode 100644
index afb36fb..0000000
--- a/libpixelflinger/tests/arch-arm64/t32cb16blend/t32cb16blend_test.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-
-#define ARGB_8888_MAX   0xFFFFFFFF
-#define ARGB_8888_MIN   0x00000000
-#define RGB_565_MAX     0xFFFF
-#define RGB_565_MIN     0x0000
-
-struct test_t
-{
-    char name[256];
-    uint32_t src_color;
-    uint16_t dst_color;
-    size_t count;
-};
-
-struct test_t tests[] =
-{
-    {"Count 0", 0, 0, 0},
-    {"Count 1, Src=Max, Dst=Min", ARGB_8888_MAX, RGB_565_MIN, 1},
-    {"Count 2, Src=Min, Dst=Max", ARGB_8888_MIN, RGB_565_MAX, 2},
-    {"Count 3, Src=Max, Dst=Max", ARGB_8888_MAX, RGB_565_MAX, 3},
-    {"Count 4, Src=Min, Dst=Min", ARGB_8888_MAX, RGB_565_MAX, 4},
-    {"Count 1, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 1},
-    {"Count 2, Src=Rand, Dst=Rand", 0xABCDEF12, 0x2345, 2},
-    {"Count 3, Src=Rand, Dst=Rand", 0x11111111, 0xEDFE, 3},
-    {"Count 4, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 4},
-    {"Count 5, Src=Rand, Dst=Rand", 0xEFEFFEFE, 0xFACC, 5},
-    {"Count 10, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 10}
-
-};
-
-void scanline_t32cb16blend_arm64(uint16_t*, uint32_t*, size_t);
-void scanline_t32cb16blend_c(uint16_t * dst, uint32_t* src, size_t count)
-{
-    while (count--)
-    {
-        uint16_t d = *dst;
-        uint32_t s = *src++;
-        int dstR = (d>>11)&0x1f;
-        int dstG = (d>>5)&0x3f;
-        int dstB = (d)&0x1f;
-        int srcR = (s >> (   3))&0x1F;
-        int srcG = (s >> ( 8+2))&0x3F;
-        int srcB = (s >> (16+3))&0x1F;
-        int srcAlpha = (s>>24) & 0xFF;
-
-
-        int f = 0x100 - (srcAlpha + ((srcAlpha>>7) & 0x1));
-        srcR += (f*dstR)>>8;
-        srcG += (f*dstG)>>8;
-        srcB += (f*dstB)>>8;
-        srcR = srcR > 0x1F? 0x1F: srcR;
-        srcG = srcG > 0x3F? 0x3F: srcG;
-        srcB = srcB > 0x1F? 0x1F: srcB;
-        *dst++ = (uint16_t)((srcR<<11)|(srcG<<5)|srcB);
-    }
-}
-
-void scanline_t32cb16blend_test()
-{
-    uint16_t dst_c[16], dst_asm[16];
-    uint32_t src[16];
-    uint32_t i;
-    uint32_t  j;
-
-    for(i = 0; i < sizeof(tests)/sizeof(struct test_t); ++i)
-    {
-        struct test_t test = tests[i];
-
-        printf("Testing - %s:",test.name);
-
-        memset(dst_c, 0, sizeof(dst_c));
-        memset(dst_asm, 0, sizeof(dst_asm));
-
-        for(j = 0; j < test.count; ++j)
-        {
-            dst_c[j]   = test.dst_color;
-            dst_asm[j] = test.dst_color;
-            src[j] = test.src_color;
-        }
-
-        scanline_t32cb16blend_c(dst_c,src,test.count);
-        scanline_t32cb16blend_arm64(dst_asm,src,test.count);
-
-
-        if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-
-        for(j = 0; j < test.count; ++j)
-        {
-            printf("dst_c[%d] = %x, dst_asm[%d] = %x \n", j, dst_c[j], j, dst_asm[j]);
-        }
-    }
-}
-
-int main()
-{
-    scanline_t32cb16blend_test();
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-mips/Android.bp b/libpixelflinger/tests/arch-mips/Android.bp
deleted file mode 100644
index 2ca2721..0000000
--- a/libpixelflinger/tests/arch-mips/Android.bp
+++ /dev/null
@@ -1,11 +0,0 @@
-cc_defaults {
-    name: "pixelflinger-tests-mips",
-    defaults: ["pixelflinger-tests"],
-
-    enabled: false,
-    arch: {
-        mips: {
-            enabled: true,
-        },
-    },
-}
diff --git a/libpixelflinger/tests/arch-mips/col32cb16blend/Android.bp b/libpixelflinger/tests/arch-mips/col32cb16blend/Android.bp
deleted file mode 100644
index 45bfe29..0000000
--- a/libpixelflinger/tests/arch-mips/col32cb16blend/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-mips-col32cb16blend",
-    defaults: ["pixelflinger-tests-mips"],
-
-    srcs: ["col32cb16blend_test.c"],
-}
diff --git a/libpixelflinger/tests/arch-mips/col32cb16blend/col32cb16blend_test.c b/libpixelflinger/tests/arch-mips/col32cb16blend/col32cb16blend_test.c
deleted file mode 100644
index dd0e60f..0000000
--- a/libpixelflinger/tests/arch-mips/col32cb16blend/col32cb16blend_test.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-
-
-#define ARGB_8888_MAX   0xFFFFFFFF
-#define ARGB_8888_MIN   0x00000000
-#define RGB_565_MAX 0xFFFF
-#define RGB_565_MIN 0x0000
-
-struct test_t
-{
-    char name[256];
-    uint32_t src_color;
-    uint16_t dst_color;
-    size_t count;
-};
-
-struct test_t tests[] =
-{
-    {"Count 1, Src=Max, Dst=Min", ARGB_8888_MAX, RGB_565_MIN, 1},
-    {"Count 2, Src=Min, Dst=Max", ARGB_8888_MIN, RGB_565_MAX, 2},
-    {"Count 3, Src=Max, Dst=Max", ARGB_8888_MAX, RGB_565_MAX, 3},
-    {"Count 4, Src=Min, Dst=Min", ARGB_8888_MAX, RGB_565_MAX, 4},
-    {"Count 1, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 1},
-    {"Count 2, Src=Rand, Dst=Rand", 0xABCDEF12, 0x2345, 2},
-    {"Count 3, Src=Rand, Dst=Rand", 0x11111111, 0xEDFE, 3},
-    {"Count 4, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 4},
-    {"Count 5, Src=Rand, Dst=Rand", 0xEFEFFEFE, 0xFACC, 5},
-    {"Count 10, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 10}
-};
-
-void scanline_col32cb16blend_mips(uint16_t *dst, uint32_t src, size_t count);
-void scanline_col32cb16blend_c(uint16_t * dst, uint32_t src, size_t count)
-{
-    uint32_t srcAlpha = (src>>24);
-    uint32_t f = 0x100 - (srcAlpha + (srcAlpha>>7));
-
-    while (count--)
-    {
-        uint16_t d = *dst;
-        int dstR = (d>>11)&0x1f;
-        int dstG = (d>>5)&0x3f;
-        int dstB = (d)&0x1f;
-        int srcR = (src >> (   3))&0x1F;
-        int srcG = (src >> ( 8+2))&0x3F;
-        int srcB = (src >> (16+3))&0x1F;
-        srcR += (f*dstR)>>8;
-        srcG += (f*dstG)>>8;
-        srcB += (f*dstB)>>8;
-        *dst++ = (uint16_t)((srcR<<11)|(srcG<<5)|srcB);
-    }
-}
-
-void scanline_col32cb16blend_test()
-{
-    uint16_t dst_c[16], dst_asm[16];
-    uint32_t i, j;
-
-    for(i = 0; i < sizeof(tests)/sizeof(struct test_t); ++i)
-    {
-        struct test_t test = tests[i];
-
-        printf("Testing - %s:",test.name);
-
-        memset(dst_c, 0, sizeof(dst_c));
-        memset(dst_asm, 0, sizeof(dst_asm));
-
-        for(j = 0; j < test.count; ++j)
-        {
-            dst_c[j]   = test.dst_color;
-            dst_asm[j] = test.dst_color;
-        }
-
-
-        scanline_col32cb16blend_c(dst_c, test.src_color, test.count);
-        scanline_col32cb16blend_mips(dst_asm, test.src_color, test.count);
-
-        if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-
-        for(j = 0; j < test.count; ++j)
-        {
-            printf("dst_c[%d] = %x, dst_asm[%d] = %x \n", j, dst_c[j], j, dst_asm[j]);
-        }
-    }
-}
-
-int main()
-{
-    scanline_col32cb16blend_test();
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-mips/t32cb16blend/Android.bp b/libpixelflinger/tests/arch-mips/t32cb16blend/Android.bp
deleted file mode 100644
index 069e97c..0000000
--- a/libpixelflinger/tests/arch-mips/t32cb16blend/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-mips-t32cb16blend",
-    defaults: ["pixelflinger-tests-mips"],
-
-    srcs: ["t32cb16blend_test.c"],
-}
diff --git a/libpixelflinger/tests/arch-mips/t32cb16blend/t32cb16blend_test.c b/libpixelflinger/tests/arch-mips/t32cb16blend/t32cb16blend_test.c
deleted file mode 100644
index c6d6937..0000000
--- a/libpixelflinger/tests/arch-mips/t32cb16blend/t32cb16blend_test.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-
-#define ARGB_8888_MAX   0xFFFFFFFF
-#define ARGB_8888_MIN   0x00000000
-#define RGB_565_MAX     0xFFFF
-#define RGB_565_MIN     0x0000
-
-struct test_t
-{
-    char name[256];
-    uint32_t src_color;
-    uint16_t dst_color;
-    size_t count;
-};
-
-struct test_t tests[] =
-{
-    {"Count 0", 0, 0, 0},
-    {"Count 1, Src=Max, Dst=Min", ARGB_8888_MAX, RGB_565_MIN, 1},
-    {"Count 2, Src=Min, Dst=Max", ARGB_8888_MIN, RGB_565_MAX, 2},
-    {"Count 3, Src=Max, Dst=Max", ARGB_8888_MAX, RGB_565_MAX, 3},
-    {"Count 4, Src=Min, Dst=Min", ARGB_8888_MAX, RGB_565_MAX, 4},
-    {"Count 1, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 1},
-    {"Count 2, Src=Rand, Dst=Rand", 0xABCDEF12, 0x2345, 2},
-    {"Count 3, Src=Rand, Dst=Rand", 0x11111111, 0xEDFE, 3},
-    {"Count 4, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 4},
-    {"Count 5, Src=Rand, Dst=Rand", 0xEFEFFEFE, 0xFACC, 5},
-    {"Count 10, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 10}
-
-};
-
-void scanline_t32cb16blend_mips(uint16_t*, uint32_t*, size_t);
-void scanline_t32cb16blend_c(uint16_t * dst, uint32_t* src, size_t count)
-{
-    while (count--)
-    {
-        uint16_t d = *dst;
-        uint32_t s = *src++;
-        int dstR = (d>>11)&0x1f;
-        int dstG = (d>>5)&0x3f;
-        int dstB = (d)&0x1f;
-        int srcR = (s >> (   3))&0x1F;
-        int srcG = (s >> ( 8+2))&0x3F;
-        int srcB = (s >> (16+3))&0x1F;
-        int srcAlpha = (s>>24) & 0xFF;
-
-
-        int f = 0x100 - (srcAlpha + ((srcAlpha>>7) & 0x1));
-        srcR += (f*dstR)>>8;
-        srcG += (f*dstG)>>8;
-        srcB += (f*dstB)>>8;
-        // srcR = srcR > 0x1F? 0x1F: srcR;
-        // srcG = srcG > 0x3F? 0x3F: srcG;
-        // srcB = srcB > 0x1F? 0x1F: srcB;
-        *dst++ = (uint16_t)((srcR<<11)|(srcG<<5)|srcB);
-    }
-}
-
-void scanline_t32cb16blend_test()
-{
-    uint16_t dst_c[16], dst_asm[16];
-    uint32_t src[16];
-    uint32_t i;
-    uint32_t  j;
-
-    for(i = 0; i < sizeof(tests)/sizeof(struct test_t); ++i)
-    {
-        struct test_t test = tests[i];
-
-        printf("Testing - %s:",test.name);
-
-        memset(dst_c, 0, sizeof(dst_c));
-        memset(dst_asm, 0, sizeof(dst_asm));
-
-        for(j = 0; j < test.count; ++j)
-        {
-            dst_c[j]   = test.dst_color;
-            dst_asm[j] = test.dst_color;
-            src[j] = test.src_color;
-        }
-
-        scanline_t32cb16blend_c(dst_c,src,test.count);
-        scanline_t32cb16blend_mips(dst_asm,src,test.count);
-
-
-        if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-
-        for(j = 0; j < test.count; ++j)
-        {
-            printf("dst_c[%d] = %x, dst_asm[%d] = %x \n", j, dst_c[j], j, dst_asm[j]);
-        }
-    }
-}
-
-int main()
-{
-    scanline_t32cb16blend_test();
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-mips64/Android.bp b/libpixelflinger/tests/arch-mips64/Android.bp
deleted file mode 100644
index ba55d62..0000000
--- a/libpixelflinger/tests/arch-mips64/Android.bp
+++ /dev/null
@@ -1,11 +0,0 @@
-cc_defaults {
-    name: "pixelflinger-tests-mips64",
-    defaults: ["pixelflinger-tests"],
-
-    enabled: false,
-    arch: {
-        mips64: {
-            enabled: true,
-        },
-    },
-}
diff --git a/libpixelflinger/tests/arch-mips64/assembler/Android.bp b/libpixelflinger/tests/arch-mips64/assembler/Android.bp
deleted file mode 100644
index b672053..0000000
--- a/libpixelflinger/tests/arch-mips64/assembler/Android.bp
+++ /dev/null
@@ -1,9 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-mips64-assembler-test",
-    defaults: ["pixelflinger-tests-mips64"],
-
-    srcs: [
-        "mips64_assembler_test.cpp",
-        "asm_mips_test_jacket.S",
-    ],
-}
diff --git a/libpixelflinger/tests/arch-mips64/assembler/asm_mips_test_jacket.S b/libpixelflinger/tests/arch-mips64/assembler/asm_mips_test_jacket.S
deleted file mode 100644
index 705ee9b..0000000
--- a/libpixelflinger/tests/arch-mips64/assembler/asm_mips_test_jacket.S
+++ /dev/null
@@ -1,93 +0,0 @@
-# /*
-#  * Copyright (C) 2015 The Android Open Source Project
-#  * All rights reserved.
-#  *
-#  * Redistribution and use in source and binary forms, with or without
-#  * modification, are permitted provided that the following conditions
-#  * are met:
-#  *  * Redistributions of source code must retain the above copyright
-#  *    notice, this list of conditions and the following disclaimer.
-#  *  * Redistributions in binary form must reproduce the above copyright
-#  *    notice, this list of conditions and the following disclaimer in
-#  *    the documentation and/or other materials provided with the
-#  *    distribution.
-#  *
-#  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-#  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-#  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-#  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-#  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-#  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-#  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-#  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-#  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-#  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
-#  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-#  * SUCH DAMAGE.
-#  */
-
-    .text
-    .balign 8
-
-    .global asm_mips_test_jacket
-
-    # // Set the register
-    # // Calls the asm function
-    # // Reads the register values to output register
-
-    # // Parameters
-    # // a0 - Function to jump
-    # // a1 - register values array
-    # // a2 - flag values array
-asm_mips_test_jacket:
-    # // Save registers to stack
-    daddiu $sp, $sp, -96
-    sd  $s0, 64($sp)
-    sd  $s1, 72($sp)
-    sd  $s2, 80($sp)
-    sd  $ra, 88($sp)
-
-    move $s0, $a0
-    move $s1, $a1
-    move $s2, $a2
-
-    ld  $v0, 16($s1)
-    ld  $v1, 24($s1)
-    ld  $a0, 32($s1)
-    ld  $a1, 40($s1)
-    ld  $a2, 48($s1)
-    ld  $a3, 56($s1)
-    ld  $a4, 64($s1)
-    ld  $a5, 72($s1)
-    ld  $a6, 80($s1)
-    ld  $a7, 88($s1)
-    ld  $t0, 96($s1)
-    ld  $t1, 104($s1)
-    ld  $t2, 112($s1)
-    ld  $t3, 120($s1)
-
-    jal $s0
-
-    sd  $v0, 16($s1)
-    sd  $v1, 24($s1)
-    sd  $a0, 32($s1)
-    sd  $a1, 40($s1)
-    sd  $a2, 48($s1)
-    sd  $a3, 56($s1)
-    sd  $a4, 64($s1)
-    sd  $a5, 72($s1)
-    sd  $a6, 80($s1)
-    sd  $a7, 88($s1)
-    sd  $t0, 96($s1)
-    sd  $t1, 104($s1)
-    sd  $t2, 112($s1)
-    sd  $t3, 120($s1)
-
-    ld  $s0, 64($sp)
-    ld  $s1, 72($sp)
-    ld  $s2, 80($sp)
-    ld  $ra, 88($sp)
-
-    daddiu $sp, $sp, 96
-
-    j   $ra
diff --git a/libpixelflinger/tests/arch-mips64/assembler/mips64_assembler_test.cpp b/libpixelflinger/tests/arch-mips64/assembler/mips64_assembler_test.cpp
deleted file mode 100644
index 9fb0a28..0000000
--- a/libpixelflinger/tests/arch-mips64/assembler/mips64_assembler_test.cpp
+++ /dev/null
@@ -1,643 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <errno.h>
-#define __STDC_FORMAT_MACROS
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include <android/log.h>
-#include <cutils/ashmem.h>
-
-#include "codeflinger/ARMAssemblerInterface.h"
-#include "codeflinger/MIPS64Assembler.h"
-
-using namespace android;
-
-#define TESTS_DATAOP_ENABLE             1
-#define TESTS_DATATRANSFER_ENABLE       1
-#define ASSEMBLY_SCRATCH_SIZE           4096
-
-void *instrMem;
-uint32_t  instrMemSize = 128 * 1024;
-char     dataMem[8192];
-
-typedef void (*asm_function_t)();
-extern "C" void asm_mips_test_jacket(asm_function_t function,
-                                     int64_t regs[], int32_t flags[]);
-
-#define MAX_32BIT (uint32_t)(((uint64_t)1 << 32) - 1)
-#define MAX_64BIT ((uint64_t)0xFFFFFFFFFFFFFFFF)
-const uint32_t NA = 0;
-const uint32_t NUM_REGS = 32;
-const uint32_t NUM_FLAGS = 16;
-
-enum instr_t
-{
-    INSTR_ADD,
-    INSTR_SUB,
-    INSTR_AND,
-    INSTR_ORR,
-    INSTR_RSB,
-    INSTR_BIC,
-    INSTR_CMP,
-    INSTR_MOV,
-    INSTR_MVN,
-    INSTR_MUL,
-    INSTR_MLA,
-    INSTR_SMULBB,
-    INSTR_SMULBT,
-    INSTR_SMULTB,
-    INSTR_SMULTT,
-    INSTR_SMULWB,
-    INSTR_SMULWT,
-    INSTR_SMLABB,
-    INSTR_UXTB16,
-    INSTR_UBFX,
-    INSTR_ADDR_ADD,
-    INSTR_ADDR_SUB,
-    INSTR_LDR,
-    INSTR_LDRB,
-    INSTR_LDRH,
-    INSTR_ADDR_LDR,
-    INSTR_LDM,
-    INSTR_STR,
-    INSTR_STRB,
-    INSTR_STRH,
-    INSTR_ADDR_STR,
-    INSTR_STM
-};
-
-enum shift_t
-{
-    SHIFT_LSL,
-    SHIFT_LSR,
-    SHIFT_ASR,
-    SHIFT_ROR,
-    SHIFT_NONE
-};
-
-enum offset_t
-{
-    REG_SCALE_OFFSET,
-    REG_OFFSET,
-    IMM8_OFFSET,
-    IMM12_OFFSET,
-    NO_OFFSET
-};
-
-enum cond_t
-{
-    EQ, NE, CS, CC, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL, NV,
-    HS = CS,
-    LO = CC
-};
-
-const char * cc_code[] =
-{
-    "EQ", "NE", "CS", "CC", "MI", "PL", "VS", "VC",
-    "HI", "LS","GE","LT", "GT", "LE", "AL", "NV"
-};
-
-struct condTest_t
-{
-    int     mode;
-    int32_t Rcond1;
-    int32_t Rcond2;
-    uint64_t Rcond1Value;
-    uint64_t Rcond2Value;
-};
-
-
-struct dataOpTest_t
-{
-    uint32_t   id;
-    instr_t    op;
-    condTest_t preCond;
-    cond_t     cond;
-    bool       setFlags;
-    uint64_t   RnValue;
-    uint64_t   RsValue;
-    bool       immediate;
-    uint32_t   immValue;
-    uint64_t   RmValue;
-    uint32_t   shiftMode;
-    uint32_t   shiftAmount;
-    uint64_t   RdValue;
-    bool       checkRd;
-    uint64_t   postRdValue;
-};
-
-struct dataTransferTest_t
-{
-    uint32_t id;
-    instr_t  op;
-    uint32_t preFlag;
-    cond_t   cond;
-    bool     setMem;
-    uint64_t memOffset;
-    uint64_t memValue;
-    uint64_t RnValue;
-    offset_t offsetType;
-    uint64_t RmValue;
-    uint32_t immValue;
-    bool     writeBack;
-    bool     preIndex;
-    bool     postIndex;
-    uint64_t RdValue;
-    uint64_t postRdValue;
-    uint64_t postRnValue;
-    bool     checkMem;
-    uint64_t postMemOffset;
-    uint32_t postMemLength;
-    uint64_t postMemValue;
-};
-
-
-dataOpTest_t dataOpTests [] =
-{
-     {0xA000,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,1,MAX_32BIT,NA,NA,NA,NA,1,0},
-     {0xA001,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,1,MAX_32BIT-1,NA,NA,NA,NA,1,MAX_64BIT},
-     {0xA002,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,NA,MAX_32BIT,NA,NA,NA,1,0},
-     {0xA003,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,NA,MAX_32BIT-1,NA,NA,NA,1,MAX_64BIT},
-     {0xA004,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSL, 0,NA,1,0},
-     {0xA005,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSL,31,NA,1,0xFFFFFFFF80000001},
-     {0xA006,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,0,3,SHIFT_LSR,1,NA,1,2},
-     {0xA007,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSR,31,NA,1,2},
-     {0xA008,INSTR_ADD,{0,0,0,0,0},AL,0,0,NA,0,0,3,SHIFT_ASR,1,NA,1,1},
-     {0xA009,INSTR_ADD,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_64BIT,SHIFT_ASR,31,NA,1,0},
-     {0xA010,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,1,MAX_32BIT,0,0,0,NA,1,1},
-     {0xA011,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,1,MAX_32BIT-1,0,0,0,NA,1,0},
-     {0xA012,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,0,0,NA,1,1},
-     {0xA013,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT-1,0,0,NA,1,0},
-     {0xA014,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSL,0,NA,1,1},
-     {0xA015,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSL,31,NA,1,0},
-     {0xA016,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,3,SHIFT_LSR,1,NA,1,1},
-     {0xA017,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSR,31,NA,1,1},
-     {0xA018,INSTR_AND,{0,0,0,0,0},AL,0,0,NA,0,0,3,SHIFT_ASR,1,NA,1,0},
-     {0xA019,INSTR_AND,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_ASR,31,NA,1,1},
-     {0xA020,INSTR_ORR,{0,0,0,0,0},AL,0,3,NA,1,MAX_32BIT,0,0,0,NA,1,MAX_64BIT},
-     {0xA021,INSTR_ORR,{0,0,0,0,0},AL,0,2,NA,1,MAX_32BIT-1,0,0,0,NA,1,MAX_64BIT-1},
-     {0xA022,INSTR_ORR,{0,0,0,0,0},AL,0,3,NA,0,0,MAX_32BIT,0,0,NA,1,MAX_64BIT},
-     {0xA023,INSTR_ORR,{0,0,0,0,0},AL,0,2,NA,0,0,MAX_32BIT-1,0,0,NA,1,MAX_64BIT-1},
-     {0xA024,INSTR_ORR,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSL,0,NA,1,MAX_64BIT},
-     {0xA025,INSTR_ORR,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,SHIFT_LSL,31,NA,1,0xFFFFFFFF80000001},
-     {0xA026,INSTR_ORR,{0,0,0,0,0},AL,0,1,NA,0,0,3,SHIFT_LSR,1,NA,1,1},
-     {0xA027,INSTR_ORR,{0,0,0,0,0},AL,0,0,NA,0,0,MAX_32BIT,SHIFT_LSR,31,NA,1,1},
-     {0xA028,INSTR_ORR,{0,0,0,0,0},AL,0,0,NA,0,0,3,SHIFT_ASR,1,NA,1,1},
-     {0xA029,INSTR_ORR,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_64BIT,SHIFT_ASR,31,NA,1,MAX_64BIT},
-     {0xA030,INSTR_CMP,{0,0,0,0,0},AL,1,0x10000,NA,1,0x10000,0,0,0,NA,0,0},
-     {0xA031,INSTR_MUL,{0,0,0,0,0},AL,0,0,0x10000,0,0,0x10000,0,0,NA,1,0},
-     {0xA032,INSTR_MUL,{0,0,0,0,0},AL,0,0,0x1000,0,0,0x10000,0,0,NA,1,0x10000000},
-     {0xA033,INSTR_MUL,{0,0,0,0,0},AL,0,0,MAX_32BIT,0,0,1,0,0,NA,1,MAX_64BIT},
-     {0xA034,INSTR_MLA,{0,0,0,0,0},AL,0,0x10000,0x10000,0,0,0x10000,0,0,NA,1,0x10000},
-     {0xA035,INSTR_MLA,{0,0,0,0,0},AL,0,0x10000,0x1000,0,0,0x10000,0,0,NA,1,0x10010000},
-     {0xA036,INSTR_SUB,{1,R_v1,R_a6,2,4},MI,0,2,NA,0,NA,1,NA,NA,2,1,1},
-     {0xA037,INSTR_SUB,{2,R_v1,R_a6,2,0},MI,0,2,NA,0,NA,1,NA,NA,2,1,2},
-     {0xA038,INSTR_SUB,{1,R_v1,R_a6,4,2},GE,0,2,NA,1,1,NA,NA,NA,2,1,1},
-     {0xA039,INSTR_SUB,{1,R_a5,R_a6,2,7},GE,0,2,NA,1,1,NA,NA,NA,2,1,2},
-     {0xA040,INSTR_SUB,{1,R_a5,R_a6,1,1},HS,0,2,NA,1,1,NA,NA,NA,2,1,1},
-     {0xA041,INSTR_SUB,{1,R_a5,R_a6,0,1},HS,0,2,NA,1,1,NA,NA,NA,2,1,2},
-     {0xA042,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,1,1<< 16,0,0,0,NA,1,UINT64_C(1) -(1<<16)},
-     {0xA043,INSTR_SUB,{0,0,0,0,0},AL,0,MAX_32BIT,NA,1,1,0,0,0,NA,1,MAX_64BIT-1},
-     {0xA044,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,1,1,0,0,0,NA,1,0},
-     {0xA045,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,0,NA,1<<16,0,0,NA,1,UINT64_C(1) -(1<<16)},
-     {0xA046,INSTR_SUB,{0,0,0,0,0},AL,0,MAX_32BIT,NA,0,NA,1,0,0,NA,1,MAX_64BIT-1},
-     {0xA047,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,0,NA,1,0,0,NA,1,0},
-     {0xA048,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,0,NA,1,SHIFT_LSL,16,NA,1,UINT64_C(1) -(1<<16)},
-     {0xA049,INSTR_SUB,{0,0,0,0,0},AL,0,0x80000001,NA,0,NA,MAX_32BIT,SHIFT_LSL,31,NA,1,1},
-     {0xA050,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,0,NA,3,SHIFT_LSR,1,NA,1,0},
-     {0xA051,INSTR_SUB,{0,0,0,0,0},AL,0,1,NA,0,NA,MAX_32BIT,SHIFT_LSR,31,NA,1,0},
-     {0xA052,INSTR_RSB,{1,R_a5,R_a6,4,1},GE,0,2,NA,1,0,NA,NA,NA,2,1,UINT64_C(-2)},
-     {0xA053,INSTR_RSB,{1,R_a5,R_a6,UINT64_C(-1),1},GE,0,2,NA,1,0,NA,NA,NA,2,1,2},
-     {0xA054,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,1,1<<16,NA,NA,NA,NA,1,(1<<16)-1},
-     {0xA055,INSTR_RSB,{0,0,0,0,0},AL,0,MAX_32BIT,NA,1,1,NA,NA,NA,NA,1,UINT64_C(1)-MAX_64BIT},
-     {0xA056,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,1,1,NA,NA,NA,NA,1,0},
-     {0xA057,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,0,NA,1<<16,0,0,NA,1,(1<<16)-1},
-     {0xA058,INSTR_RSB,{0,0,0,0,0},AL,0,MAX_32BIT,NA,0,NA,1,0,0,NA,1,UINT64_C(1)-MAX_64BIT},
-     {0xA059,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,0,NA,1,0,0,NA,1,0},
-     {0xA060,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,0,NA,1,SHIFT_LSL,16,NA,1,(1<<16)-1},
-     {0xA061,INSTR_RSB,{0,0,0,0,0},AL,0,0x80000001,NA,0,NA,MAX_32BIT ,SHIFT_LSL,31,NA,1,UINT64_C(-1)},
-     {0xA062,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,0,NA,3,SHIFT_LSR,1,NA,1,0},
-     {0xA063,INSTR_RSB,{0,0,0,0,0},AL,0,1,NA,0,NA,MAX_32BIT,SHIFT_LSR,31,NA,1,0},
-     {0xA064,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,1,0x80000001,NA,NA,NA,NA,1,0xFFFFFFFF80000001},
-     {0xA065,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,0x80000001,0,0,NA,1,0xFFFFFFFF80000001},
-     {0xA066,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,1,NA,1,MAX_64BIT-1},
-     {0xA067,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,31,NA,1,0xFFFFFFFF80000000},
-     {0xA068,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,3,SHIFT_LSR,1,NA,1,1},
-     {0xA069,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSR,31,NA,1,1},
-     {0xA070,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,3,SHIFT_ASR,1,NA,1,1},
-     {0xA071,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,MAX_64BIT ,SHIFT_ASR,31,NA,1,MAX_64BIT},
-     {0xA072,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,3,SHIFT_ROR,1,NA,1,0xFFFFFFFF80000001},
-     {0xA073,INSTR_MOV,{0,0,0,0,0},AL,0,NA,NA,0,0,0x80000001,SHIFT_ROR,31,NA,1,3},
-     {0xA074,INSTR_MOV,{0,0,0,0,0},AL,1,NA,NA,0,0,MAX_64BIT -1,SHIFT_ASR,1,NA,1,MAX_64BIT},
-     {0xA075,INSTR_MOV,{0,0,0,0,0},AL,1,NA,NA,0,0,3,SHIFT_ASR,1,NA,1,1},
-     {0xA076,INSTR_MOV,{2,R_a5,R_a6,6,8},MI,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2},
-     {0xA077,INSTR_MOV,{2,R_a5,R_a6,UINT64_C(-4),UINT64_C(-8)},MI,0,NA,NA,0,0,0x80000001,0,0,2,1,0xFFFFFFFF80000001},
-     {0xA078,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),UINT64_C(-1)},LT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2},
-     {0xA079,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),1},LT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0xFFFFFFFF80000001},
-     {0xA080,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),UINT64_C(-5)},GE,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,1,2,1,MAX_64BIT-1},
-     {0xA081,INSTR_MOV,{1,R_a5,R_a6,5,5},GE,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,31,2,1,0xFFFFFFFF80000000},
-     {0xA082,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),1},GE,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,31,2,1,2},
-     {0xA083,INSTR_MOV,{1,R_a5,R_a6,4,1},LE,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,1,2,1,2},
-     {0xA084,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),UINT64_C(-1)},LE,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0xFFFFFFFF80000001},
-     {0xA085,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),1},LE,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,31,2,1,0xFFFFFFFF80000000},
-     {0xA086,INSTR_MOV,{1,R_a5,R_a6,1,1},GT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2},
-     {0xA087,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),UINT64_C(-3)},GT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0xFFFFFFFF80000001},
-     {0xA088,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),0},GT,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2},
-     {0xA089,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),UINT64_C(-1)},GT,0,NA,NA,0,0,0x80000001,0,0,2,1,2},
-     {0xA090,INSTR_MOV,{1,R_a5,R_a6,6,1},GT,0,NA,NA,0,0,0x80000001,0,0,2,1,0xFFFFFFFF80000001},
-     {0xA091,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),1},GT,0,NA,NA,0,0,0x80000001,0,0,2,1,2},
-     {0xA092,INSTR_MOV,{1,R_a5,R_a6,1,1},GT,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,1,2,1,2},
-     {0xA093,INSTR_MOV,{1,R_a5,R_a6,4,1},GT,0,NA,NA,0,0,MAX_32BIT,SHIFT_LSL,1,2,1,MAX_64BIT-1},
-     {0xA094,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),1},GT,0,NA,NA,0,0,MAX_32BIT ,SHIFT_LSL,1,2,1,2},
-     {0xA095,INSTR_MOV,{1,R_a5,R_a6,1,UINT64_C(-1)},HS,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,2},
-     {0xA096,INSTR_MOV,{1,R_a5,R_a6,UINT64_C(-1),1},HS,0,NA,NA,1,0x80000001,NA,NA,NA,2,1,0xFFFFFFFF80000001},
-     {0xA097,INSTR_MVN,{1,R_a5,R_a6,1,4},HS,0,NA,NA,1,MAX_32BIT-1,NA,NA,NA,2,1,2},
-     {0xA098,INSTR_MVN,{1,R_a5,R_a6,UINT64_C(-1),1},HS,0,NA,NA,1,MAX_32BIT-1,NA,NA,NA,2,1,1},
-     {0xA099,INSTR_MVN,{0,0,0,0,0},AL,0,NA,NA,1,0,NA,NA,NA,2,1,MAX_64BIT},
-     {0xA100,INSTR_MVN,{0,0,0,0,0},AL,0,NA,NA,0,NA,MAX_32BIT-1,NA,0,2,1,1},
-     {0xA101,INSTR_MVN,{0,0,0,0,0},AL,0,NA,NA,0,NA,0x80000001,NA,0,2,1,0x7FFFFFFE},
-     {0xA102,INSTR_BIC,{0,0,0,0,0},AL,0,1,NA,1,MAX_32BIT,NA,NA,NA,NA,1,0},
-     {0xA103,INSTR_BIC,{0,0,0,0,0},AL,0,1,NA,1,MAX_32BIT-1,NA,NA,NA,NA,1,1},
-     {0xA104,INSTR_BIC,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT,0,0,NA,1,0},
-     {0xA105,INSTR_BIC,{0,0,0,0,0},AL,0,1,NA,0,0,MAX_32BIT-1,0,0,NA,1,1},
-     {0xA106,INSTR_BIC,{0,0,0,0,0},AL,0,0xF0,NA,0,0,3,SHIFT_ASR,1,NA,1,0xF0},
-     {0xA107,INSTR_BIC,{0,0,0,0,0},AL,0,0xF0,NA,0,0,MAX_64BIT,SHIFT_ASR,31,NA,1,0},
-     {0xA108,INSTR_SMULBB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCDFFFF,0,NA,0xFFFFFFFFABCD0001,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA109,INSTR_SMULBB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCD0001,0,NA,0xFFFFFFFFABCD0FFF,NA,NA,NA,1,0x00000FFF},
-     {0xA110,INSTR_SMULBB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCD0001,0,NA,0xFFFFFFFFABCDFFFF,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA111,INSTR_SMULBB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCDFFFF,0,NA,0xFFFFFFFFABCDFFFF,NA,NA,NA,1,1},
-     {0xA112,INSTR_SMULBT,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFFFFFABCD,0,NA,0xFFFFFFFFABCD0001,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA113,INSTR_SMULBT,{0,0,0,0,0},AL,0,NA,0x000000000001ABCD,0,NA,0xFFFFFFFFABCD0FFF,NA,NA,NA,1,0x00000FFF},
-     {0xA114,INSTR_SMULBT,{0,0,0,0,0},AL,0,NA,0x000000000001ABCD,0,NA,0xFFFFFFFFABCDFFFF,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA115,INSTR_SMULBT,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFFFFFABCD,0,NA,0xFFFFFFFFABCDFFFF,NA,NA,NA,1,1},
-     {0xA116,INSTR_SMULTB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCDFFFF,0,NA,0x000000000001ABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA117,INSTR_SMULTB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCD0001,0,NA,0x000000000FFFABCD,NA,NA,NA,1,0x00000FFF},
-     {0xA118,INSTR_SMULTB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCD0001,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA119,INSTR_SMULTB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCDFFFF,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,1},
-     {0xA120,INSTR_SMULTT,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFFFFFABCD,0,NA,0x000000000001ABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA121,INSTR_SMULTT,{0,0,0,0,0},AL,0,NA,0x000000000001ABCD,0,NA,0x000000000FFFABCD,NA,NA,NA,1,0x00000FFF},
-     {0xA122,INSTR_SMULTT,{0,0,0,0,0},AL,0,NA,0x000000000001ABCD,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA123,INSTR_SMULTT,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFFFFFABCD,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,1},
-     {0xA124,INSTR_SMULWB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCDFFFF,0,NA,0x000000000001ABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFE},
-     {0xA125,INSTR_SMULWB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCD0001,0,NA,0x000000000FFFABCD,NA,NA,NA,1,0x00000FFF},
-     {0xA126,INSTR_SMULWB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCD0001,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA127,INSTR_SMULWB,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFABCDFFFF,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,0},
-     {0xA128,INSTR_SMULWT,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFFFFFABCD,0,NA,0x000000000001ABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFE},
-     {0xA129,INSTR_SMULWT,{0,0,0,0,0},AL,0,NA,0x000000000001ABCD,0,NA,0x000000000FFFABCD,NA,NA,NA,1,0x00000FFF},
-     {0xA130,INSTR_SMULWT,{0,0,0,0,0},AL,0,NA,0x000000000001ABCD,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,0xFFFFFFFFFFFFFFFF},
-     {0xA131,INSTR_SMULWT,{0,0,0,0,0},AL,0,NA,0xFFFFFFFFFFFFABCD,0,NA,0xFFFFFFFFFFFFABCD,NA,NA,NA,1,0},
-     {0xA132,INSTR_SMLABB,{0,0,0,0,0},AL,0,1,0xFFFFFFFFABCDFFFF,0,NA,0xFFFFFFFFABCD0001,NA,NA,NA,1,0},
-     {0xA133,INSTR_SMLABB,{0,0,0,0,0},AL,0,1,0xFFFFFFFFABCD0001,0,NA,0xFFFFFFFFABCD0FFF,NA,NA,NA,1,0x00001000},
-     {0xA134,INSTR_SMLABB,{0,0,0,0,0},AL,0,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFABCD0001,0,NA,0xABCDFFFF,NA,NA,NA,1,0xFFFFFFFFFFFFFFFE},
-     {0xA135,INSTR_SMLABB,{0,0,0,0,0},AL,0,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFABCDFFFF,0,NA,0xABCDFFFF,NA,NA,NA,1,0},
-     {0xA136,INSTR_UXTB16,{0,0,0,0,0},AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,0,NA,1,0x00CD0001},
-     {0xA137,INSTR_UXTB16,{0,0,0,0,0},AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,1,NA,1,0x00AB00EF},
-     {0xA138,INSTR_UXTB16,{0,0,0,0,0},AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,2,NA,1,0x000100CD},
-     {0xA139,INSTR_UXTB16,{0,0,0,0,0},AL,0,NA,NA,0,NA,0xABCDEF01,SHIFT_ROR,3,NA,1,0x00EF00AB},
-     {0xA140,INSTR_ADDR_ADD,{0,0,0,0,0},AL,0,0xCFFFFFFFF,NA,0,NA,0x1,SHIFT_LSL,1,NA,1,0xD00000001},
-     {0xA141,INSTR_ADDR_ADD,{0,0,0,0,0},AL,0,0x01,NA,0,NA,0x1,SHIFT_LSL,2,NA,1,0x5},
-     {0xA142,INSTR_ADDR_ADD,{0,0,0,0,0},AL,0,0xCFFFFFFFF,NA,0,NA,0x1,NA,0,NA,1,0xD00000000},
-     {0xA143,INSTR_ADDR_SUB,{0,0,0,0,0},AL,0,0xD00000001,NA,0,NA,0x010000,SHIFT_LSR,15,NA,1,0xCFFFFFFFF},
-     {0xA144,INSTR_ADDR_SUB,{0,0,0,0,0},AL,0,0xCFFFFFFFF,NA,0,NA,0x020000,SHIFT_LSR,15,NA,1,0xCFFFFFFFB},
-     {0xA145,INSTR_ADDR_SUB,{0,0,0,0,0},AL,0,3,NA,0,NA,0x010000,SHIFT_LSR,15,NA,1,1},
-};
-
-dataTransferTest_t dataTransferTests [] =
-{
-    {0xB000,INSTR_LDR,AL,AL,1,24,0xABCDEF0123456789,0,REG_SCALE_OFFSET,24,NA,NA,NA,NA,NA,0x23456789,0,0,NA,NA,NA},
-    {0xB001,INSTR_LDR,AL,AL,1,0,0xABCDEF0123456789,0,IMM12_OFFSET,NA,4,1,0,1,NA,0x23456789,4,0,NA,NA,NA},
-    {0xB002,INSTR_LDR,AL,AL,1,0,0xABCDEF0123456789,0,NO_OFFSET,NA,NA,0,0,0,NA,0x23456789,0,0,NA,NA,NA},
-    {0xB003,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,0,REG_SCALE_OFFSET,4064,NA,NA,NA,NA,NA,0x89,0,0,NA,NA,NA},
-    {0xB004,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,0,0,1,0,NA,0x67,4065,0,NA,NA,NA},
-    {0xB005,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,1,0,1,0,NA,0x45,4065,0,NA,NA,NA},
-    {0xB006,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,2,0,1,0,NA,0x23,4065,0,NA,NA,NA},
-    {0xB007,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,4065,IMM12_OFFSET,NA,1,1,0,1,NA,0x67,4066,0,NA,NA,NA},
-    {0xB008,INSTR_LDRB,AL,AL,1,4064,0xABCDEF0123456789,0,NO_OFFSET,NA,NA,0,0,0,NA,0x89,0,0,NA,NA,NA},
-    {0xB009,INSTR_LDRH,AL,AL,1,0,0xABCDEF0123456789,0,IMM8_OFFSET,NA,2,1,0,1,NA,0x6789,2,0,NA,NA,NA},
-    {0xB010,INSTR_LDRH,AL,AL,1,4064,0xABCDEF0123456789,0,REG_OFFSET,4064,0,0,1,0,NA,0x6789,0,0,NA,NA,NA},
-    {0xB011,INSTR_LDRH,AL,AL,1,4064,0xABCDEF0123456789,0,REG_OFFSET,4066,0,0,1,0,NA,0x2345,0,0,NA,NA,NA},
-    {0xB012,INSTR_LDRH,AL,AL,1,0,0xABCDEF0123456789,0,NO_OFFSET,NA,0,0,0,0,NA,0x6789,0,0,NA,NA,NA},
-    {0xB013,INSTR_LDRH,AL,AL,1,0,0xABCDEF0123456789,2,NO_OFFSET,NA,0,0,0,0,NA,0x2345,2,0,NA,NA,NA},
-    {0xB014,INSTR_STR,AL,AL,1,2,0xDEADBEEFDEADBEEF,4,IMM12_OFFSET,NA,4,1,0,1,0xABCDEF0123456789,0xABCDEF0123456789,8,1,2,8,0xDEAD23456789BEEF},
-    {0xB015,INSTR_STR,AL,AL,1,2,0xDEADBEEFDEADBEEF,4,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4,1,2,8,0xDEAD23456789BEEF},
-    {0xB016,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,0,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEFDEAD89EF},
-    {0xB017,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,1,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEFDE89BEEF},
-    {0xB018,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,2,0,1,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEF89ADBEEF},
-    {0xB019,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,IMM12_OFFSET,NA,4,1,0,1,0xABCDEF0123456789,0xABCDEF0123456789,5,1,0,8,0xDEADBEEFDEAD89EF},
-    {0xB020,INSTR_STRB,AL,AL,1,0,0xDEADBEEFDEADBEEF,1,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,1,1,0,8,0xDEADBEEFDEAD89EF},
-    {0xB021,INSTR_STRH,AL,AL,1,4066,0xDEADBEEFDEADBEEF,4070,IMM8_OFFSET,NA,2,1,0,1,0xABCDEF0123456789,0xABCDEF0123456789,4072,1,4066,8,0xDEAD6789DEADBEEF},
-    {0xB022,INSTR_STRH,AL,AL,1,4066,0xDEADBEEFDEADBEEF,4070,NO_OFFSET,NA,NA,0,0,0,0xABCDEF0123456789,0xABCDEF0123456789,4070,1,4066,8,0xDEAD6789DEADBEEF},
-};
-
-
-void flushcache()
-{
-    const long base = long(instrMem);
-    const long curr = base + long(instrMemSize);
-    __builtin___clear_cache((char*)base, (char*)curr);
-}
-
-void dataOpTest(dataOpTest_t test, ArmToMips64Assembler *a64asm, uint32_t Rd = R_v1,
-                uint32_t Rn = R_t0, uint32_t Rm = R_t1, uint32_t Rs = R_t2)
-{
-    int64_t  regs[NUM_REGS] = {0};
-    int32_t  flags[NUM_FLAGS] = {0};
-    int64_t  savedRegs[NUM_REGS] = {0};
-    uint32_t i;
-    uint32_t op2;
-
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        regs[i] = i;
-    }
-
-    regs[Rd] = test.RdValue;
-    regs[Rn] = test.RnValue;
-    regs[Rs] = test.RsValue;
-    a64asm->reset();
-    if (test.preCond.mode) {
-        a64asm->set_condition(test.preCond.mode, test.preCond.Rcond1, test.preCond.Rcond2);
-        regs[test.preCond.Rcond1] = test.preCond.Rcond1Value;
-        regs[test.preCond.Rcond2] = test.preCond.Rcond2Value;
-    }
-    a64asm->prolog();
-    if(test.immediate == true)
-    {
-        op2 = a64asm->imm(test.immValue);
-    }
-    else if(test.immediate == false && test.shiftAmount == 0)
-    {
-        op2 = Rm;
-        regs[Rm] = (int64_t)((int32_t)(test.RmValue));
-    }
-    else
-    {
-        op2 = a64asm->reg_imm(Rm, test.shiftMode, test.shiftAmount);
-        regs[Rm] = (int64_t)((int32_t)(test.RmValue));
-    }
-    switch(test.op)
-    {
-    case INSTR_ADD: a64asm->ADD(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_SUB: a64asm->SUB(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_RSB: a64asm->RSB(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_AND: a64asm->AND(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_ORR: a64asm->ORR(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_BIC: a64asm->BIC(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_MUL: a64asm->MUL(test.cond, test.setFlags, Rd,Rm,Rs); break;
-    case INSTR_MLA: a64asm->MLA(test.cond, test.setFlags, Rd,Rm,Rs,Rn); break;
-    case INSTR_CMP: a64asm->CMP(test.cond, Rn,op2); break;
-    case INSTR_MOV: a64asm->MOV(test.cond, test.setFlags,Rd,op2); break;
-    case INSTR_MVN: a64asm->MVN(test.cond, test.setFlags,Rd,op2); break;
-    case INSTR_SMULBB:a64asm->SMULBB(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULBT:a64asm->SMULBT(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULTB:a64asm->SMULTB(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULTT:a64asm->SMULTT(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULWB:a64asm->SMULWB(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMULWT:a64asm->SMULWT(test.cond, Rd,Rm,Rs); break;
-    case INSTR_SMLABB:a64asm->SMLABB(test.cond, Rd,Rm,Rs,Rn); break;
-    case INSTR_UXTB16:a64asm->UXTB16(test.cond, Rd,Rm,test.shiftAmount); break;
-    case INSTR_ADDR_ADD: a64asm->ADDR_ADD(test.cond, test.setFlags, Rd,Rn,op2); break;
-    case INSTR_ADDR_SUB: a64asm->ADDR_SUB(test.cond, test.setFlags, Rd,Rn,op2); break;
-    default: printf("Error"); return;
-    }
-    a64asm->epilog(0);
-    a64asm->fix_branches();
-    flushcache();
-
-    asm_function_t asm_function = (asm_function_t)(instrMem);
-
-    for(i = 0; i < NUM_REGS; ++i)
-        savedRegs[i] = regs[i];
-
-    asm_mips_test_jacket(asm_function, regs, flags);
-
-    /* Check if all regs except Rd is same */
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        if((i == Rd) || i == 2) continue;
-        if(regs[i] != savedRegs[i])
-        {
-            printf("Test %x failed Reg(%d) tampered Expected(0x%" PRIx64 "),"
-                   "Actual(0x%" PRIx64 ") t\n", test.id, i, savedRegs[i],
-                   regs[i]);
-            exit(0);
-            return;
-        }
-    }
-
-    if(test.checkRd == 1 && regs[Rd] != test.postRdValue)
-    {
-        printf("Test %x failed, Expected(%" PRIx64 "), Actual(%" PRIx64 ")\n",
-               test.id, test.postRdValue, regs[Rd]);
-        exit(0);
-    }
-    else
-    {
-        printf("Test %x passed\n", test.id);
-    }
-}
-
-
-void dataTransferTest(dataTransferTest_t test, ARMAssemblerInterface *a64asm,
-                      uint32_t Rd = R_v1, uint32_t Rn = R_t0,uint32_t Rm = R_t1)
-{
-    int64_t regs[NUM_REGS] = {0};
-    int64_t savedRegs[NUM_REGS] = {0};
-    int32_t flags[NUM_FLAGS] = {0};
-    uint32_t i;
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        regs[i] = i;
-    }
-
-    uint32_t op2;
-
-    regs[Rd] = test.RdValue;
-    regs[Rn] = (uint64_t)(&dataMem[test.RnValue]);
-    regs[Rm] = test.RmValue;
-    flags[test.preFlag] = 1;
-
-    if(test.setMem == true)
-    {
-        unsigned char *mem = (unsigned char *)&dataMem[test.memOffset];
-        uint64_t value = test.memValue;
-        for(int j = 0; j < 8; ++j)
-        {
-            mem[j] = value & 0x00FF;
-            value >>= 8;
-        }
-    }
-    a64asm->reset();
-    a64asm->prolog();
-    if(test.offsetType == REG_SCALE_OFFSET)
-    {
-        op2 = a64asm->reg_scale_pre(Rm);
-    }
-    else if(test.offsetType == REG_OFFSET)
-    {
-        op2 = a64asm->reg_pre(Rm);
-    }
-    else if(test.offsetType == IMM12_OFFSET && test.preIndex == true)
-    {
-        op2 = a64asm->immed12_pre(test.immValue, test.writeBack);
-    }
-    else if(test.offsetType == IMM12_OFFSET && test.postIndex == true)
-    {
-        op2 = a64asm->immed12_post(test.immValue);
-    }
-    else if(test.offsetType == IMM8_OFFSET && test.preIndex == true)
-    {
-        op2 = a64asm->immed8_pre(test.immValue, test.writeBack);
-    }
-    else if(test.offsetType == IMM8_OFFSET && test.postIndex == true)
-    {
-        op2 = a64asm->immed8_post(test.immValue);
-    }
-    else if(test.offsetType == NO_OFFSET)
-    {
-        op2 = a64asm->__immed12_pre(0);
-    }
-    else
-    {
-        printf("Error - Unknown offset\n"); return;
-    }
-
-    switch(test.op)
-    {
-    case INSTR_LDR:  a64asm->LDR(test.cond, Rd,Rn,op2); break;
-    case INSTR_LDRB: a64asm->LDRB(test.cond, Rd,Rn,op2); break;
-    case INSTR_LDRH: a64asm->LDRH(test.cond, Rd,Rn,op2); break;
-    case INSTR_ADDR_LDR: a64asm->ADDR_LDR(test.cond, Rd,Rn,op2); break;
-    case INSTR_STR:  a64asm->STR(test.cond, Rd,Rn,op2); break;
-    case INSTR_STRB: a64asm->STRB(test.cond, Rd,Rn,op2); break;
-    case INSTR_STRH: a64asm->STRH(test.cond, Rd,Rn,op2); break;
-    case INSTR_ADDR_STR: a64asm->ADDR_STR(test.cond, Rd,Rn,op2); break;
-    default: printf("Error"); return;
-    }
-    a64asm->epilog(0);
-    flushcache();
-
-    asm_function_t asm_function = (asm_function_t)(instrMem);
-
-    for(i = 0; i < NUM_REGS; ++i)
-        savedRegs[i] = regs[i];
-
-    asm_mips_test_jacket(asm_function, regs, flags);
-
-    /* Check if all regs except Rd/Rn are same */
-    for(i = 0; i < NUM_REGS; ++i)
-    {
-        if(i == Rd || i == Rn || i == R_v0) continue;
-
-        if(regs[i] != savedRegs[i])
-        {
-            printf("Test %x failed Reg(%d) tampered"
-                   " Expected(0x%" PRIx64 "), Actual(0x%" PRIx64 ") t\n",
-                   test.id, i, savedRegs[i], regs[i]);
-            return;
-        }
-    }
-
-    if((uint64_t)regs[Rd] != test.postRdValue)
-    {
-        printf("Test %x failed, "
-               "Expected in Rd(0x%" PRIx64 "), Actual(0x%" PRIx64 ")\n",
-               test.id, test.postRdValue, regs[Rd]);
-    }
-    else if((uint64_t)regs[Rn] != (uint64_t)(&dataMem[test.postRnValue]))
-    {
-        printf("Test %x failed, "
-               "Expected in Rn(0x%" PRIx64 "), Actual(0x%" PRIx64 ")\n",
-               test.id, test.postRnValue, regs[Rn] - (uint64_t)dataMem);
-    }
-    else if(test.checkMem == true)
-    {
-        unsigned char *addr = (unsigned char *)&dataMem[test.postMemOffset];
-        uint64_t value;
-        value = 0;
-        for(uint32_t j = 0; j < test.postMemLength; ++j)
-            value = (value << 8) | addr[test.postMemLength-j-1];
-        if(value != test.postMemValue)
-        {
-            printf("Test %x failed, "
-                   "Expected in Mem(0x%" PRIx64 "), Actual(0x%" PRIx64 ")\n",
-                   test.id, test.postMemValue, value);
-        }
-        else
-        {
-            printf("Test %x passed\n", test.id);
-        }
-    }
-    else
-    {
-        printf("Test %x passed\n", test.id);
-    }
-}
-
-int main(void)
-{
-    uint32_t i;
-
-    /* Allocate memory to store instructions generated by ArmToArm64Assembler */
-    {
-        int fd = ashmem_create_region("code cache", instrMemSize);
-        if(fd < 0) {
-            printf("IF < 0\n");
-            printf("Creating code cache, ashmem_create_region "
-                                "failed with error '%s'", strerror(errno));
-        }
-        instrMem = mmap(NULL, instrMemSize,
-                                    PROT_READ | PROT_WRITE | PROT_EXEC,
-                                MAP_PRIVATE, fd, 0);
-    }
-
-    ArmToMips64Assembler a64asm(instrMem);
-
-    if(TESTS_DATAOP_ENABLE)
-    {
-        printf("Running data processing tests\n");
-        for(i = 0; i < sizeof(dataOpTests)/sizeof(dataOpTest_t); ++i) {
-            dataOpTest(dataOpTests[i], &a64asm);
-        }
-    }
-
-    if(TESTS_DATATRANSFER_ENABLE)
-    {
-        printf("Running data transfer tests\n");
-        for(i = 0; i < sizeof(dataTransferTests)/sizeof(dataTransferTest_t); ++i)
-            dataTransferTest(dataTransferTests[i], &a64asm);
-    }
-
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-mips64/col32cb16blend/Android.bp b/libpixelflinger/tests/arch-mips64/col32cb16blend/Android.bp
deleted file mode 100644
index bfc6ae9..0000000
--- a/libpixelflinger/tests/arch-mips64/col32cb16blend/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-mips64-col32cb16blend",
-    defaults: ["pixelflinger-tests-mips64"],
-
-    srcs: ["col32cb16blend_test.c"],
-}
diff --git a/libpixelflinger/tests/arch-mips64/col32cb16blend/col32cb16blend_test.c b/libpixelflinger/tests/arch-mips64/col32cb16blend/col32cb16blend_test.c
deleted file mode 100644
index 066eab6..0000000
--- a/libpixelflinger/tests/arch-mips64/col32cb16blend/col32cb16blend_test.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-
-
-#define ARGB_8888_MAX   0xFFFFFFFF
-#define ARGB_8888_MIN   0x00000000
-#define RGB_565_MAX 0xFFFF
-#define RGB_565_MIN 0x0000
-
-struct test_t
-{
-    char name[256];
-    uint32_t src_color;
-    uint16_t dst_color;
-    size_t count;
-};
-
-struct test_t tests[] =
-{
-    {"Count 1, Src=Max, Dst=Min", ARGB_8888_MAX, RGB_565_MIN, 1},
-    {"Count 2, Src=Min, Dst=Max", ARGB_8888_MIN, RGB_565_MAX, 2},
-    {"Count 3, Src=Max, Dst=Max", ARGB_8888_MAX, RGB_565_MAX, 3},
-    {"Count 4, Src=Min, Dst=Min", ARGB_8888_MAX, RGB_565_MAX, 4},
-    {"Count 1, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 1},
-    {"Count 2, Src=Rand, Dst=Rand", 0xABCDEF12, 0x2345, 2},
-    {"Count 3, Src=Rand, Dst=Rand", 0x11111111, 0xEDFE, 3},
-    {"Count 4, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 4},
-    {"Count 5, Src=Rand, Dst=Rand", 0xEFEFFEFE, 0xFACC, 5},
-    {"Count 10, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 10}
-};
-
-void scanline_col32cb16blend_mips64(uint16_t *dst, uint32_t src, size_t count);
-void scanline_col32cb16blend_c(uint16_t * dst, uint32_t src, size_t count)
-{
-    uint32_t srcAlpha = (src>>24);
-    uint32_t f = 0x100 - (srcAlpha + (srcAlpha>>7));
-
-    while (count--)
-    {
-        uint16_t d = *dst;
-        int dstR = (d>>11)&0x1f;
-        int dstG = (d>>5)&0x3f;
-        int dstB = (d)&0x1f;
-        int srcR = (src >> (   3))&0x1F;
-        int srcG = (src >> ( 8+2))&0x3F;
-        int srcB = (src >> (16+3))&0x1F;
-        srcR += (f*dstR)>>8;
-        srcG += (f*dstG)>>8;
-        srcB += (f*dstB)>>8;
-        *dst++ = (uint16_t)((srcR<<11)|(srcG<<5)|srcB);
-    }
-}
-
-void scanline_col32cb16blend_test()
-{
-    uint16_t dst_c[16], dst_asm[16];
-    uint32_t i, j;
-
-    for(i = 0; i < sizeof(tests)/sizeof(struct test_t); ++i)
-    {
-        struct test_t test = tests[i];
-
-        printf("Testing - %s:",test.name);
-
-        memset(dst_c, 0, sizeof(dst_c));
-        memset(dst_asm, 0, sizeof(dst_asm));
-
-        for(j = 0; j < test.count; ++j)
-        {
-            dst_c[j]   = test.dst_color;
-            dst_asm[j] = test.dst_color;
-        }
-
-
-        scanline_col32cb16blend_c(dst_c, test.src_color, test.count);
-        scanline_col32cb16blend_mips64(dst_asm, test.src_color, test.count);
-
-        if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-
-        for(j = 0; j < test.count; ++j)
-        {
-            printf("dst_c[%d] = %x, dst_asm[%d] = %x \n", j, dst_c[j], j, dst_asm[j]);
-        }
-    }
-}
-
-int main()
-{
-    scanline_col32cb16blend_test();
-    return 0;
-}
diff --git a/libpixelflinger/tests/arch-mips64/disassembler/Android.bp b/libpixelflinger/tests/arch-mips64/disassembler/Android.bp
deleted file mode 100644
index 96bf9e9..0000000
--- a/libpixelflinger/tests/arch-mips64/disassembler/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-mips64-disassembler-test",
-    defaults: ["pixelflinger-tests-mips64"],
-
-    srcs: ["mips64_disassembler_test.cpp"],
-}
diff --git a/libpixelflinger/tests/arch-mips64/disassembler/mips64_disassembler_test.cpp b/libpixelflinger/tests/arch-mips64/disassembler/mips64_disassembler_test.cpp
deleted file mode 100644
index 22efa9f..0000000
--- a/libpixelflinger/tests/arch-mips64/disassembler/mips64_disassembler_test.cpp
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <stdio.h>
-#include <inttypes.h>
-#include <string.h>
-#include "../../../codeflinger/mips64_disassem.h"
-
-//typedef uint64_t db_addr_t;
-//db_addr_t mips_disassem(db_addr_t loc, char *di_buffer, int alt_format);
-
-struct test_table_entry_t
-{
-     uint32_t code;
-     const char *instr;
-};
-
-static test_table_entry_t test_table [] =
-{
-    { 0x00011020, "add\tv0,zero,at"     },
-    { 0x00832820, "add\ta1,a0,v1"       },
-    { 0x00c74020, "add\ta4,a2,a3"       },
-    { 0x012a5820, "add\ta7,a5,a6"       },
-    { 0x258dffff, "addiu\tt1,t0,-1"     },
-    { 0x25cf0004, "addiu\tt3,t2,4"      },
-    { 0x02119021, "addu\ts2,s0,s1"      },
-    { 0x0274a821, "addu\ts5,s3,s4"      },
-    { 0x02d7c024, "and\tt8,s6,s7"       },
-    { 0x333aff00, "andi\tk0,t9,0xff00"  },
-    { 0x3f7cffff, "aui\tgp,k1,-1"       },
-    { 0x3c1dffff, "lui\tsp,0xffff"      },
-    { 0x00e04051, "clo\ta4,a3"          },
-    { 0x01205050, "clz\ta6,a5"          },
-    { 0x016c682c, "dadd\tt1,a7,t0"      },
-    { 0x65cf0008, "daddiu\tt3,t2,8"     },
-    { 0x0211902d, "daddu\ts2,s0,s1"     },
-    { 0x7e741403, "dext\ts4,s3,16,3"    },
-    { 0x7eb6f801, "dextm\ts6,s5,0,64"   },
-    { 0x7ef87c02, "dextu\tt8,s7,48,16"  },
-    { 0x7f3a8207, "dins\tk0,t9,8,9"     },
-    { 0x7f7c0005, "dinsm\tgp,k1,0,33"   },
-    { 0x7fbe0806, "dinsu\ts8,sp,32,2"   },
-    { 0x03e1102e, "dsub\tv0,ra,at"      },
-    { 0x0064282f, "dsubu\ta1,v1,a0"     },
-    { 0x7cc77a00, "ext\ta3,a2,8,16"     },
-    { 0x7d09fc04, "ins\ta5,a4,16,16"    },
-    { 0x00200009, "jr\tat"              },
-    { 0x00201009, "jalr\tv0,at"         },
-    { 0x0020f809, "jalr\tat"            },
-    { 0x8082fff0, "lb\tv0,-16(a0)"      },
-    { 0x916c0008, "lbu\tt0,8(a7)"       },
-    { 0xdfa3ffe8, "ld\tv1,-24(sp)"      },
-    { 0x84850080, "lh\ta1,128(a0)"      },
-    { 0x94c7ff80, "lhu\ta3,-128(a2)"    },
-    { 0x8d09000c, "lw\ta5,12(a4)"       },
-    { 0x9d4bfff4, "lwu\ta7,-12(a6)"     },
-    { 0x00620898, "mul\tat,v1,v0"       },
-    { 0x006208d8, "muh\tat,v1,v0"       },
-    { 0x00620899, "mulu\tat,v1,v0"      },
-    { 0x006208d9, "muhu\tat,v1,v0"      },
-    { 0x00000000, "nop"                 },
-    { 0x02329827, "nor\ts3,s1,s2"       },
-    { 0x0295b025, "or\ts6,s4,s5"        },
-    { 0x36f0ff00, "ori\ts0,s7,0xff00"   },
-    { 0x7c03103b, "rdhwr\tv0,v1"        },
-    { 0x00242a02, "rotr\ta1,a0,8"       },
-    { 0x00c74046, "rotrv\ta4,a3,a2"     },
-    { 0xa12afff0, "sb\ta6,-16(a5)"      },
-    { 0xfd6c0100, "sd\tt0,256(a7)"      },
-    { 0x7c0d7420, "seb\tt2,t1"          },
-    { 0x7c0f8620, "seh\ts0,t3"          },
-    { 0x02329835, "seleqz\ts3,s1,s2"    },
-    { 0x0295b037, "selnez\ts6,s4,s5"    },
-    { 0xa6f84000, "sh\tt8,16384(s7)"    },
-    { 0x0019d100, "sll\tk0,t9,4"        },
-    { 0x037ce804, "sllv\tsp,gp,k1"      },
-    { 0x03df082a, "slt\tat,s8,ra"       },
-    { 0x28430007, "slti\tv1,v0,7"       },
-    { 0x2c850020, "sltiu\ta1,a0,32"     },
-    { 0x00c7402b, "sltu\ta4,a2,a3"      },
-    { 0x00095103, "sra\ta6,a5,4"        },
-    { 0x016c6807, "srav\tt1,t0,a7"      },
-    { 0x000e7a02, "srl\tt3,t2,8"        },
-    { 0x02119006, "srlv\ts2,s1,s0"      },
-    { 0x0274a822, "sub\ts5,s3,s4"       },
-    { 0x02d7c023, "subu\tt8,s6,s7"      },
-    { 0xaf3afffc, "sw\tk0,-4(t9)"       },
-    { 0x7c1be0a0, "wsbh\tgp,k1"         },
-    { 0x03bef826, "xor\tra,sp,s8"       },
-    { 0x3801ffff, "li\tat,0xffff"       },
-    { 0x3843ffff, "xori\tv1,v0,0xffff"  },
-};
-
-struct test_branches_table_entry_t
-{
-     uint32_t code;
-     const char *instr;
-     int16_t offset;
-};
-
-static test_branches_table_entry_t test_branches_table [] = {
-    { 0x1000ffff, "b\t", static_cast<int16_t>(0xffff)         },
-    { 0x13df0008, "beq\ts8,ra,", 0x8                          },
-    { 0x042100ff, "bgez\tat,", 0xff                           },
-    { 0x1c40ff00, "bgtz\tv0,", static_cast<int16_t>(0xff00)   },
-    { 0x18605555, "blez\tv1,", 0x5555                         },
-    { 0x0480aaaa, "bltz\ta0,", static_cast<int16_t>(0xaaaa)   },
-    { 0x14a68888, "bne\ta1,a2,", static_cast<int16_t>(0x8888) },
-};
-
-struct test_jump_table_entry_t
-{
-     uint32_t code;
-     const char *instr;
-     int32_t offset;
-};
-
-static test_jump_table_entry_t test_jump_table [] = {
-    { 0x0956ae66, "j\t", 0x156ae66          },
-    { 0x0d56ae66, "jal\t", 0x156ae66        },
-};
-
-int main()
-{
-    char instr[256];
-    uint32_t failed = 0;
-
-    for(uint32_t i = 0; i < sizeof(test_table)/sizeof(test_table_entry_t); ++i)
-    {
-        test_table_entry_t *test;
-        test = &test_table[i];
-        mips_disassem(&test->code, instr, 0);
-        if(strcmp(instr, test->instr) != 0)
-        {
-            printf("Test Failed \n"
-                   "Code     : 0x%0x\n"
-                   "Expected : %s\n"
-                   "Actual   : %s\n", test->code, test->instr, instr);
-            failed++;
-        }
-    }
-    for(uint32_t i = 0; i < sizeof(test_branches_table)/sizeof(test_branches_table_entry_t); ++i)
-    {
-        test_branches_table_entry_t *test;
-        test = &test_branches_table[i];
-        mips_disassem(&test->code, instr, 0);
-        //printf("DBG code address: %lx\n", (uint64_t)(&test->code));
-        uint64_t loc = (uint64_t)test + 4 + (test->offset << 2);
-        //printf("DBG loc: %lx\n", loc);
-        char temp[256], address[16];
-        strcpy(temp, test->instr);
-        sprintf(address, "0x%lx", loc);
-        strcat(temp, address);
-        if(strcmp(instr, temp) != 0)
-        {
-            printf("Test Failed \n"
-                   "Code     : 0x%0x\n"
-                   "Expected : %s\n"
-                   "Actual   : %s\n", test->code, temp, instr);
-            failed++;
-        }
-    }
-    for(uint32_t i = 0; i < sizeof(test_jump_table)/sizeof(test_jump_table_entry_t); ++i)
-    {
-        test_jump_table_entry_t *test;
-        test = &test_jump_table[i];
-        mips_disassem(&test->code, instr, 0);
-        //printf("DBG code address: %lx\n", (uint64_t)(&test->code));
-        uint64_t loc = ((uint64_t)test & 0xfffffffff0000000) | (test->offset << 2);
-        //printf("DBG loc: %lx\n", loc);
-        char temp[256], address[16];
-        strcpy(temp, test->instr);
-        sprintf(address, "0x%08lx", loc);
-        strcat(temp, address);
-        if(strcmp(instr, temp) != 0)
-        {
-            printf("Test Failed \n"
-                   "Code     : 0x%0x\n"
-                   "Expected : '%s'\n"
-                   "Actual   : '%s'\n", test->code, temp, instr);
-            failed++;
-        }
-    }
-    if(failed == 0)
-    {
-        printf("All tests PASSED\n");
-        return 0;
-    }
-    else
-    {
-        printf("%d tests FAILED\n", failed);
-        return -1;
-    }
-}
diff --git a/libpixelflinger/tests/codegen/Android.bp b/libpixelflinger/tests/codegen/Android.bp
deleted file mode 100644
index 7e4bcfb..0000000
--- a/libpixelflinger/tests/codegen/Android.bp
+++ /dev/null
@@ -1,12 +0,0 @@
-cc_test {
-    name: "test-opengl-codegen",
-    defaults: ["pixelflinger-tests"],
-
-    srcs: ["codegen.cpp"],
-
-    arch: {
-        arm: {
-            instruction_set: "arm",
-        },
-    },
-}
diff --git a/libpixelflinger/tests/codegen/codegen.cpp b/libpixelflinger/tests/codegen/codegen.cpp
deleted file mode 100644
index dce4ed7..0000000
--- a/libpixelflinger/tests/codegen/codegen.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-#include <stdio.h>
-#include <stdint.h>
-
-#include "private/pixelflinger/ggl_context.h"
-
-#include "buffer.h"
-#include "scanline.h"
-
-#include "codeflinger/CodeCache.h"
-#include "codeflinger/GGLAssembler.h"
-#include "codeflinger/ARMAssembler.h"
-#if defined(__mips__) && !defined(__LP64__) && __mips_isa_rev < 6
-#include "codeflinger/MIPSAssembler.h"
-#elif defined(__mips__) && defined(__LP64__) && __mips_isa_rev == 6
-#include "codeflinger/MIPS64Assembler.h"
-#endif
-#include "codeflinger/Arm64Assembler.h"
-
-#if defined(__arm__) || (defined(__mips__) && ((!defined(__LP64__) && __mips_isa_rev < 6) || (defined(__LP64__) && __mips_isa_rev == 6))) || defined(__aarch64__)
-#   define ANDROID_ARM_CODEGEN  1
-#else
-#   define ANDROID_ARM_CODEGEN  0
-#endif
-
-#if defined(__mips__) && ((!defined(__LP64__) && __mips_isa_rev < 6) || (defined(__LP64__) && __mips_isa_rev == 6))
-#define ASSEMBLY_SCRATCH_SIZE   4096
-#elif defined(__aarch64__)
-#define ASSEMBLY_SCRATCH_SIZE   8192
-#else
-#define ASSEMBLY_SCRATCH_SIZE   2048
-#endif
-
-using namespace android;
-
-class ScanlineAssembly : public Assembly {
-    AssemblyKey<needs_t> mKey;
-public:
-    ScanlineAssembly(needs_t needs, size_t size)
-        : Assembly(size), mKey(needs) { }
-    const AssemblyKey<needs_t>& key() const { return mKey; }
-};
-
-#if ANDROID_ARM_CODEGEN
-static void ggl_test_codegen(uint32_t n, uint32_t p, uint32_t t0, uint32_t t1)
-{
-    GGLContext* c;
-    gglInit(&c);
-    needs_t needs;
-    needs.n = n;
-    needs.p = p;
-    needs.t[0] = t0;
-    needs.t[1] = t1;
-    sp<ScanlineAssembly> a(new ScanlineAssembly(needs, ASSEMBLY_SCRATCH_SIZE));
-
-#if defined(__arm__)
-    GGLAssembler assembler( new ARMAssembler(a) );
-#endif
-
-#if defined(__mips__) && !defined(__LP64__) && __mips_isa_rev < 6
-    GGLAssembler assembler( new ArmToMipsAssembler(a) );
-#endif
-
-#if defined(__mips__) && defined(__LP64__) && __mips_isa_rev == 6
-    GGLAssembler assembler( new ArmToMips64Assembler(a) );
-#endif
-
-#if defined(__aarch64__)
-    GGLAssembler assembler( new ArmToArm64Assembler(a) );
-#endif
-
-    int err = assembler.scanline(needs, (context_t*)c);
-    if (err != 0) {
-        printf("error %08x (%s)\n", err, strerror(-err));
-    }
-    gglUninit(c);
-}
-#else
-static void ggl_test_codegen(uint32_t, uint32_t, uint32_t, uint32_t) {
-    printf("This test runs only on ARM, Arm64 or MIPS\n");
-}
-#endif
-
-int main(int argc, char** argv)
-{
-    if (argc != 2) {
-        printf("usage: %s 00000117:03454504_00001501_00000000\n", argv[0]);
-        return 0;
-    }
-    uint32_t n;
-    uint32_t p;
-    uint32_t t0;
-    uint32_t t1;
-    sscanf(argv[1], "%08x:%08x_%08x_%08x", &p, &n, &t0, &t1);
-    ggl_test_codegen(n, p,  t0, t1);
-    return 0;
-}
diff --git a/libpixelflinger/tests/gglmul/Android.bp b/libpixelflinger/tests/gglmul/Android.bp
deleted file mode 100644
index 288337b..0000000
--- a/libpixelflinger/tests/gglmul/Android.bp
+++ /dev/null
@@ -1,12 +0,0 @@
-cc_test {
-    name: "test-pixelflinger-gglmul",
-
-    srcs: ["gglmul_test.cpp"],
-
-    header_libs: ["libpixelflinger_internal"],
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-}
diff --git a/libpixelflinger/tests/gglmul/gglmul_test.cpp b/libpixelflinger/tests/gglmul/gglmul_test.cpp
deleted file mode 100644
index 5d460d6..0000000
--- a/libpixelflinger/tests/gglmul/gglmul_test.cpp
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <inttypes.h>
-
-#include "private/pixelflinger/ggl_fixed.h"
-
-// gglClampx() tests
-struct gglClampx_test_t
-{
-    GGLfixed input;
-    GGLfixed output;
-};
-
-gglClampx_test_t gglClampx_tests[] =
-{
-    {FIXED_ONE + 1, FIXED_ONE},
-    {FIXED_ONE, FIXED_ONE},
-    {FIXED_ONE - 1, FIXED_ONE - 1},
-    {1, 1},
-    {0, 0},
-    {FIXED_MIN,0}
-};
-
-void gglClampx_test()
-{
-    uint32_t i;
-
-    printf("Testing gglClampx\n");
-    for(i = 0; i < sizeof(gglClampx_tests)/sizeof(gglClampx_test_t); ++i)
-    {
-        gglClampx_test_t *test = &gglClampx_tests[i];
-        printf("Test input=0x%08x output=0x%08x :",
-                test->input, test->output);
-        if(gglClampx(test->input) == test->output)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-    }
-}
-
-// gglClz() tests
-struct gglClz_test_t
-{
-    GGLfixed input;
-    GGLfixed output;
-};
-
-gglClz_test_t gglClz_tests[] =
-{
-    {0, 32},
-    {1, 31},
-    {-1,0}
-};
-
-void gglClz_test()
-{
-    uint32_t i;
-
-    printf("Testing gglClz\n");
-    for(i = 0; i < sizeof(gglClz_tests)/sizeof(gglClz_test_t); ++i)
-    {
-        gglClz_test_t *test = &gglClz_tests[i];
-        printf("Test input=0x%08x output=%2d :", test->input, test->output);
-        if(gglClz(test->input) == test->output)
-            printf("Passed\n");
-        else
-            printf("Failed\n");
-    }
-}
-
-// gglMulx() tests
-struct gglMulx_test_t
-{
-    GGLfixed x;
-    GGLfixed y;
-    int      shift;
-};
-
-gglMulx_test_t gglMulx_tests[] =
-{
-    {1,1,1},
-    {0,1,1},
-    {FIXED_ONE,FIXED_ONE,16},
-    {FIXED_MIN,FIXED_MAX,16},
-    {FIXED_MAX,FIXED_MAX,16},
-    {FIXED_MIN,FIXED_MIN,16},
-    {FIXED_HALF,FIXED_ONE,16},
-    {FIXED_MAX,FIXED_MAX,31},
-    {FIXED_ONE,FIXED_MAX,31}
-};
-
-void gglMulx_test()
-{
-    uint32_t i;
-    GGLfixed actual, expected;
-
-    printf("Testing gglMulx\n");
-    for(i = 0; i < sizeof(gglMulx_tests)/sizeof(gglMulx_test_t); ++i)
-    {
-        gglMulx_test_t *test = &gglMulx_tests[i];
-        printf("Test x=0x%08x y=0x%08x shift=%2d :",
-                test->x, test->y, test->shift);
-        actual = gglMulx(test->x, test->y, test->shift);
-        expected =
-          ((int64_t)test->x * test->y + (1 << (test->shift-1))) >> test->shift;
-    if(actual == expected)
-        printf(" Passed\n");
-    else
-        printf(" Failed Actual(0x%08x) Expected(0x%08x)\n",
-               actual, expected);
-    }
-}
-// gglMulAddx() tests
-struct gglMulAddx_test_t
-{
-    GGLfixed x;
-    GGLfixed y;
-    int      shift;
-    GGLfixed a;
-};
-
-gglMulAddx_test_t gglMulAddx_tests[] =
-{
-    {1,2,1,1},
-    {0,1,1,1},
-    {FIXED_ONE,FIXED_ONE,16, 0},
-    {FIXED_MIN,FIXED_MAX,16, FIXED_HALF},
-    {FIXED_MAX,FIXED_MAX,16, FIXED_MIN},
-    {FIXED_MIN,FIXED_MIN,16, FIXED_MAX},
-    {FIXED_HALF,FIXED_ONE,16,FIXED_ONE},
-    {FIXED_MAX,FIXED_MAX,31, FIXED_HALF},
-    {FIXED_ONE,FIXED_MAX,31, FIXED_HALF}
-};
-
-void gglMulAddx_test()
-{
-    uint32_t i;
-    GGLfixed actual, expected;
-
-    printf("Testing gglMulAddx\n");
-    for(i = 0; i < sizeof(gglMulAddx_tests)/sizeof(gglMulAddx_test_t); ++i)
-    {
-        gglMulAddx_test_t *test = &gglMulAddx_tests[i];
-        printf("Test x=0x%08x y=0x%08x shift=%2d a=0x%08x :",
-                test->x, test->y, test->shift, test->a);
-        actual = gglMulAddx(test->x, test->y,test->a, test->shift);
-        expected = (((int64_t)test->x * test->y) >> test->shift) + test->a;
-
-        if(actual == expected)
-            printf(" Passed\n");
-        else
-            printf(" Failed Actual(0x%08x) Expected(0x%08x)\n",
-                    actual, expected);
-    }
-}
-// gglMulSubx() tests
-struct gglMulSubx_test_t
-{
-    GGLfixed x;
-    GGLfixed y;
-    int      shift;
-    GGLfixed a;
-};
-
-gglMulSubx_test_t gglMulSubx_tests[] =
-{
-    {1,2,1,1},
-    {0,1,1,1},
-    {FIXED_ONE,FIXED_ONE,16, 0},
-    {FIXED_MIN,FIXED_MAX,16, FIXED_HALF},
-    {FIXED_MAX,FIXED_MAX,16, FIXED_MIN},
-    {FIXED_MIN,FIXED_MIN,16, FIXED_MAX},
-    {FIXED_HALF,FIXED_ONE,16,FIXED_ONE},
-    {FIXED_MAX,FIXED_MAX,31, FIXED_HALF},
-    {FIXED_ONE,FIXED_MAX,31, FIXED_HALF}
-};
-
-void gglMulSubx_test()
-{
-    uint32_t i;
-    GGLfixed actual, expected;
-
-    printf("Testing gglMulSubx\n");
-    for(i = 0; i < sizeof(gglMulSubx_tests)/sizeof(gglMulSubx_test_t); ++i)
-    {
-        gglMulSubx_test_t *test = &gglMulSubx_tests[i];
-        printf("Test x=0x%08x y=0x%08x shift=%2d a=0x%08x :",
-                test->x, test->y, test->shift, test->a);
-        actual = gglMulSubx(test->x, test->y, test->a, test->shift);
-        expected = (((int64_t)test->x * test->y) >> test->shift) - test->a;
-
-        if(actual == expected)
-            printf(" Passed\n");
-        else
-            printf(" Failed Actual(0x%08x) Expected(0x%08x)\n",
-                actual, expected);
-    }
-}
-
-// gglMulii() tests
-
-struct gglMulii_test_t
-{
-    int32_t x;
-    int32_t y;
-};
-
-gglMulii_test_t gglMulii_tests[] =
-{
-    {1,INT32_MIN},
-    {1,INT32_MAX},
-    {0,INT32_MIN},
-    {0,INT32_MAX},
-    {INT32_MIN, INT32_MAX},
-    {INT32_MAX, INT32_MIN},
-    {INT32_MIN, INT32_MIN},
-    {INT32_MAX, INT32_MAX}
-};
-
-void gglMulii_test()
-{
-    uint32_t i;
-    int64_t actual, expected;
-
-    printf("Testing gglMulii\n");
-    for(i = 0; i < sizeof(gglMulii_tests)/sizeof(gglMulii_test_t); ++i)
-    {
-        gglMulii_test_t *test = &gglMulii_tests[i];
-        printf("Test x=0x%08x y=0x%08x :", test->x, test->y);
-        actual = gglMulii(test->x, test->y);
-        expected = ((int64_t)test->x * test->y);
-
-        if(actual == expected)
-            printf(" Passed\n");
-        else
-            printf(" Failed Actual(%" PRId64 ") Expected(%" PRId64 ")\n",
-                    actual, expected);
-    }
-}
-
-int main(int /*argc*/, char** /*argv*/)
-{
-    gglClampx_test();
-    gglClz_test();
-    gglMulx_test();
-    gglMulAddx_test();
-    gglMulSubx_test();
-    gglMulii_test();
-    return 0;
-}
diff --git a/libpixelflinger/trap.cpp b/libpixelflinger/trap.cpp
deleted file mode 100644
index 06ad237..0000000
--- a/libpixelflinger/trap.cpp
+++ /dev/null
@@ -1,1173 +0,0 @@
-/* libs/pixelflinger/trap.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define LOG_TAG "pixelflinger-trap"
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <cutils/memory.h>
-#include <log/log.h>
-
-#include "trap.h"
-#include "picker.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-
-// enable to see triangles edges
-#define DEBUG_TRANGLES  0
-
-// ----------------------------------------------------------------------------
-
-static void pointx_validate(void *con, const GGLcoord* c, GGLcoord r);
-static void pointx(void *con, const GGLcoord* c, GGLcoord r);
-static void aa_pointx(void *con, const GGLcoord* c, GGLcoord r);
-static void aa_nice_pointx(void *con, const GGLcoord* c, GGLcoord r);
-
-static void linex_validate(void *con, const GGLcoord* v0, const GGLcoord* v1, GGLcoord w);
-static void linex(void *con, const GGLcoord* v0, const GGLcoord* v1, GGLcoord w);
-static void aa_linex(void *con, const GGLcoord* v0, const GGLcoord* v1, GGLcoord w);
-
-static void recti_validate(void* c, GGLint l, GGLint t, GGLint r, GGLint b); 
-static void recti(void* c, GGLint l, GGLint t, GGLint r, GGLint b); 
-
-static void trianglex_validate(void*,
-        const GGLcoord*, const GGLcoord*, const GGLcoord*);
-static void trianglex_small(void*,
-        const GGLcoord*, const GGLcoord*, const GGLcoord*);
-static void trianglex_big(void*,
-        const GGLcoord*, const GGLcoord*, const GGLcoord*);
-static void aa_trianglex(void*,
-        const GGLcoord*, const GGLcoord*, const GGLcoord*);
-static void trianglex_debug(void* con,
-        const GGLcoord*, const GGLcoord*, const GGLcoord*);
-
-static void aapolyx(void* con,
-        const GGLcoord* pts, int count);
-
-static inline int min(int a, int b) CONST;
-static inline int max(int a, int b) CONST;
-static inline int min(int a, int b, int c) CONST;
-static inline int max(int a, int b, int c) CONST;
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Tools
-#endif
-
-inline int min(int a, int b) {
-    return a<b ? a : b;
-}
-inline int max(int a, int b) {
-    return a<b ? b : a;
-}
-inline int min(int a, int b, int c) {
-    return min(a,min(b,c));
-}
-inline int max(int a, int b, int c) {
-    return max(a,max(b,c));
-}
-
-template <typename T>
-static inline void swap(T& a, T& b) {
-    T t(a);
-    a = b;
-    b = t;
-}
-
-static void
-triangle_dump_points( const GGLcoord*  v0,
-                      const GGLcoord*  v1,
-                      const GGLcoord*  v2 )
-{
-    float tri = 1.0f / TRI_ONE;
-    ALOGD("  P0=(%.3f, %.3f)  [%08x, %08x]\n"
-          "  P1=(%.3f, %.3f)  [%08x, %08x]\n"
-          "  P2=(%.3f, %.3f)  [%08x, %08x]\n",
-          v0[0]*tri, v0[1]*tri, v0[0], v0[1],
-          v1[0]*tri, v1[1]*tri, v1[0], v1[1],
-          v2[0]*tri, v2[1]*tri, v2[0], v2[1] );
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Misc
-#endif
-
-void ggl_init_trap(context_t* c)
-{
-    ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE|GGL_TMU_STATE|GGL_CB_STATE);
-}
-
-void ggl_state_changed(context_t* c, int flags)
-{
-    if (ggl_likely(!c->dirty)) {
-        c->procs.pointx     = pointx_validate;
-        c->procs.linex      = linex_validate;
-        c->procs.recti      = recti_validate;
-        c->procs.trianglex  = trianglex_validate;
-    }
-    c->dirty |= uint32_t(flags);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Point
-#endif
-
-void pointx_validate(void *con, const GGLcoord* v, GGLcoord rad)
-{
-    GGL_CONTEXT(c, con);
-    ggl_pick(c);
-    if (c->state.needs.p & GGL_NEED_MASK(P_AA)) {
-        if (c->state.enables & GGL_ENABLE_POINT_AA_NICE) {
-            c->procs.pointx = aa_nice_pointx;
-        } else {
-            c->procs.pointx = aa_pointx;
-        }
-    } else {
-        c->procs.pointx = pointx;
-    }
-    c->procs.pointx(con, v, rad);
-}
-
-void pointx(void *con, const GGLcoord* v, GGLcoord rad)
-{
-    GGL_CONTEXT(c, con);
-    GGLcoord halfSize = TRI_ROUND(rad) >> 1;
-    if (halfSize == 0)
-        halfSize = TRI_HALF;
-    GGLcoord xc = v[0]; 
-    GGLcoord yc = v[1];
-    if (halfSize & TRI_HALF) { // size odd
-        xc = TRI_FLOOR(xc) + TRI_HALF;
-        yc = TRI_FLOOR(yc) + TRI_HALF;
-    } else { // size even
-        xc = TRI_ROUND(xc);
-        yc = TRI_ROUND(yc);
-    }
-    GGLint l = (xc - halfSize) >> TRI_FRACTION_BITS;
-    GGLint t = (yc - halfSize) >> TRI_FRACTION_BITS;
-    GGLint r = (xc + halfSize) >> TRI_FRACTION_BITS;
-    GGLint b = (yc + halfSize) >> TRI_FRACTION_BITS;
-    recti(c, l, t, r, b);
-}
-
-// This way of computing the coverage factor, is more accurate and gives
-// better results for small circles, but it is also a lot slower.
-// Here we use super-sampling.
-static int32_t coverageNice(GGLcoord x, GGLcoord y, 
-        GGLcoord rmin, GGLcoord rmax, GGLcoord rr)
-{
-    const GGLcoord d2 = x*x + y*y;
-    if (d2 >= rmax) return 0;
-    if (d2 < rmin)  return 0x7FFF;
-
-    const int kSamples              =  4;
-    const int kInc                  =  4;    // 1/4 = 0.25
-    const int kCoverageUnit         =  1;    // 1/(4^2) = 0.0625
-    const GGLcoord kCoordOffset     = -6;    // -0.375
-
-    int hits = 0;
-    int x_sample = x + kCoordOffset;
-    for (int i=0 ; i<kSamples ; i++, x_sample += kInc) {
-        const int xval = rr - (x_sample * x_sample);
-        int y_sample = y + kCoordOffset;
-        for (int j=0 ; j<kSamples ; j++, y_sample += kInc) {
-            if (xval - (y_sample * y_sample) > 0)
-                hits += kCoverageUnit;
-        }
-    }
-    return min(0x7FFF, hits << (15 - kSamples));
-}
-
-
-void aa_nice_pointx(void *con, const GGLcoord* v, GGLcoord size)
-{
-    GGL_CONTEXT(c, con);
-
-    GGLcoord rad = ((size + 1)>>1);
-    GGLint l = (v[0] - rad) >> TRI_FRACTION_BITS;
-    GGLint t = (v[1] - rad) >> TRI_FRACTION_BITS;
-    GGLint r = (v[0] + rad + (TRI_ONE-1)) >> TRI_FRACTION_BITS;
-    GGLint b = (v[1] + rad + (TRI_ONE-1)) >> TRI_FRACTION_BITS;
-    GGLcoord xstart = TRI_FROM_INT(l) - v[0] + TRI_HALF; 
-    GGLcoord ystart = TRI_FROM_INT(t) - v[1] + TRI_HALF; 
-
-    // scissor...
-    if (l < GGLint(c->state.scissor.left)) {
-        xstart += TRI_FROM_INT(c->state.scissor.left-l);
-        l = GGLint(c->state.scissor.left);
-    }
-    if (t < GGLint(c->state.scissor.top)) {
-        ystart += TRI_FROM_INT(c->state.scissor.top-t);
-        t = GGLint(c->state.scissor.top);
-    }
-    if (r > GGLint(c->state.scissor.right)) {
-        r = GGLint(c->state.scissor.right);
-    }
-    if (b > GGLint(c->state.scissor.bottom)) {
-        b = GGLint(c->state.scissor.bottom);
-    }
-
-    int xc = r - l;
-    int yc = b - t;
-    if (xc>0 && yc>0) {
-        int16_t* covPtr = c->state.buffers.coverage;
-        const int32_t sqr2Over2 = 0xC; // rounded up
-        GGLcoord rr = rad*rad;
-        GGLcoord rmin = (rad - sqr2Over2)*(rad - sqr2Over2);
-        GGLcoord rmax = (rad + sqr2Over2)*(rad + sqr2Over2);
-        GGLcoord y = ystart;
-        c->iterators.xl = l;
-        c->iterators.xr = r;
-        c->init_y(c, t);
-        do {
-            // compute coverage factors for each pixel
-            GGLcoord x = xstart;
-            for (int i=l ; i<r ; i++) {
-                covPtr[i] = coverageNice(x, y, rmin, rmax, rr);
-                x += TRI_ONE;
-            }
-            y += TRI_ONE;
-            c->scanline(c);
-            c->step_y(c);
-        } while (--yc);
-    }
-}
-
-// This is a cheap way of computing the coverage factor for a circle.
-// We just lerp between the circles of radii r-sqrt(2)/2 and r+sqrt(2)/2
-static inline int32_t coverageFast(GGLcoord x, GGLcoord y,
-        GGLcoord rmin, GGLcoord rmax, GGLcoord scale)
-{
-    const GGLcoord d2 = x*x + y*y;
-    if (d2 >= rmax) return 0;
-    if (d2 < rmin)  return 0x7FFF;
-    return 0x7FFF - (d2-rmin)*scale;
-}
-
-void aa_pointx(void *con, const GGLcoord* v, GGLcoord size)
-{
-    GGL_CONTEXT(c, con);
-
-    GGLcoord rad = ((size + 1)>>1);
-    GGLint l = (v[0] - rad) >> TRI_FRACTION_BITS;
-    GGLint t = (v[1] - rad) >> TRI_FRACTION_BITS;
-    GGLint r = (v[0] + rad + (TRI_ONE-1)) >> TRI_FRACTION_BITS;
-    GGLint b = (v[1] + rad + (TRI_ONE-1)) >> TRI_FRACTION_BITS;
-    GGLcoord xstart = TRI_FROM_INT(l) - v[0] + TRI_HALF; 
-    GGLcoord ystart = TRI_FROM_INT(t) - v[1] + TRI_HALF; 
-
-    // scissor...
-    if (l < GGLint(c->state.scissor.left)) {
-        xstart += TRI_FROM_INT(c->state.scissor.left-l);
-        l = GGLint(c->state.scissor.left);
-    }
-    if (t < GGLint(c->state.scissor.top)) {
-        ystart += TRI_FROM_INT(c->state.scissor.top-t);
-        t = GGLint(c->state.scissor.top);
-    }
-    if (r > GGLint(c->state.scissor.right)) {
-        r = GGLint(c->state.scissor.right);
-    }
-    if (b > GGLint(c->state.scissor.bottom)) {
-        b = GGLint(c->state.scissor.bottom);
-    }
-
-    int xc = r - l;
-    int yc = b - t;
-    if (xc>0 && yc>0) {
-        int16_t* covPtr = c->state.buffers.coverage;
-        rad <<= 4;
-        const int32_t sqr2Over2 = 0xB5;    // fixed-point 24.8
-        GGLcoord rmin = rad - sqr2Over2;
-        GGLcoord rmax = rad + sqr2Over2;
-        GGLcoord scale;
-        rmin *= rmin;
-        rmax *= rmax;
-        scale = 0x800000 / (rmax - rmin);
-        rmin >>= 8;
-        rmax >>= 8;
-
-        GGLcoord y = ystart;
-        c->iterators.xl = l;
-        c->iterators.xr = r;
-        c->init_y(c, t);
-
-        do {
-            // compute coverage factors for each pixel
-            GGLcoord x = xstart;
-            for (int i=l ; i<r ; i++) {
-                covPtr[i] = coverageFast(x, y, rmin, rmax, scale);
-                x += TRI_ONE;
-            }
-            y += TRI_ONE;
-            c->scanline(c);
-            c->step_y(c);
-        } while (--yc);
-    }
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Line
-#endif
-
-void linex_validate(void *con, const GGLcoord* v0, const GGLcoord* v1, GGLcoord w)
-{
-    GGL_CONTEXT(c, con);
-    ggl_pick(c);
-    if (c->state.needs.p & GGL_NEED_MASK(P_AA)) {
-        c->procs.linex = aa_linex;
-    } else {
-        c->procs.linex = linex;
-    }
-    c->procs.linex(con, v0, v1, w);
-}
-
-static void linex(void *con, const GGLcoord* v0, const GGLcoord* v1, GGLcoord width)
-{
-    GGLcoord v[4][2];
-    v[0][0] = v0[0];    v[0][1] = v0[1];
-    v[1][0] = v1[0];    v[1][1] = v1[1];
-    v0 = v[0];
-    v1 = v[1];
-    const GGLcoord dx = abs(v0[0] - v1[0]);
-    const GGLcoord dy = abs(v0[1] - v1[1]);
-    GGLcoord nx, ny;
-    nx = ny = 0;
-
-    GGLcoord halfWidth = TRI_ROUND(width) >> 1;
-    if (halfWidth == 0)
-        halfWidth = TRI_HALF;
-
-    ((dx > dy) ? ny : nx) = halfWidth;
-    v[2][0] = v1[0];    v[2][1] = v1[1];
-    v[3][0] = v0[0];    v[3][1] = v0[1];
-    v[0][0] += nx;      v[0][1] += ny;
-    v[1][0] += nx;      v[1][1] += ny;
-    v[2][0] -= nx;      v[2][1] -= ny;
-    v[3][0] -= nx;      v[3][1] -= ny;
-    trianglex_big(con, v[0], v[1], v[2]);
-    trianglex_big(con, v[0], v[2], v[3]);
-}
-
-static void aa_linex(void *con, const GGLcoord* v0, const GGLcoord* v1, GGLcoord width)
-{
-    GGLcoord v[4][2];
-    v[0][0] = v0[0];    v[0][1] = v0[1];
-    v[1][0] = v1[0];    v[1][1] = v1[1];
-    v0 = v[0];
-    v1 = v[1];
-    
-    const GGLcoord dx = v0[0] - v1[0];
-    const GGLcoord dy = v0[1] - v1[1];
-    GGLcoord nx = -dy;
-    GGLcoord ny =  dx;
-
-    // generally, this will be well below 1.0
-    const GGLfixed norm = gglMulx(width, gglSqrtRecipx(nx*nx+ny*ny), 4);
-    nx = gglMulx(nx, norm, 21);
-    ny = gglMulx(ny, norm, 21);
-    
-    v[2][0] = v1[0];    v[2][1] = v1[1];
-    v[3][0] = v0[0];    v[3][1] = v0[1];
-    v[0][0] += nx;      v[0][1] += ny;
-    v[1][0] += nx;      v[1][1] += ny;
-    v[2][0] -= nx;      v[2][1] -= ny;
-    v[3][0] -= nx;      v[3][1] -= ny;
-    aapolyx(con, v[0], 4);        
-}
-
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Rect
-#endif
-
-void recti_validate(void *con, GGLint l, GGLint t, GGLint r, GGLint b)
-{
-    GGL_CONTEXT(c, con);
-    ggl_pick(c);
-    c->procs.recti = recti;
-    c->procs.recti(con, l, t, r, b);
-}
-
-void recti(void* con, GGLint l, GGLint t, GGLint r, GGLint b)
-{
-    GGL_CONTEXT(c, con);
-
-    // scissor...
-    if (l < GGLint(c->state.scissor.left))
-        l = GGLint(c->state.scissor.left);
-    if (t < GGLint(c->state.scissor.top))
-        t = GGLint(c->state.scissor.top);
-    if (r > GGLint(c->state.scissor.right))
-        r = GGLint(c->state.scissor.right);
-    if (b > GGLint(c->state.scissor.bottom))
-        b = GGLint(c->state.scissor.bottom);
-
-    int xc = r - l;
-    int yc = b - t;
-    if (xc>0 && yc>0) {
-        c->iterators.xl = l;
-        c->iterators.xr = r;
-        c->init_y(c, t);
-        c->rect(c, yc);
-    }
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Triangle / Debugging
-#endif
-
-static void scanline_set(context_t* c)
-{
-    int32_t x = c->iterators.xl;
-    size_t ct = c->iterators.xr - x;
-    int32_t y = c->iterators.y;
-    surface_t* cb = &(c->state.buffers.color);
-    const GGLFormat* fp = &(c->formats[cb->format]);
-    uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
-                            (x + (cb->stride * y)) * fp->size;
-    const size_t size = ct * fp->size;
-    memset(dst, 0xFF, size);
-}
-
-static void trianglex_debug(void* con,
-        const GGLcoord* v0, const GGLcoord* v1, const GGLcoord* v2)
-{
-    GGL_CONTEXT(c, con);
-    if (c->state.needs.p & GGL_NEED_MASK(P_AA)) {
-        aa_trianglex(con,v0,v1,v2);
-    } else {
-        trianglex_big(con,v0,v1,v2);
-    }
-	void (*save_scanline)(context_t*)  = c->scanline;
-    c->scanline = scanline_set;
-    linex(con, v0, v1, TRI_ONE);
-    linex(con, v1, v2, TRI_ONE);
-    linex(con, v2, v0, TRI_ONE);
-    c->scanline = save_scanline;
-}
-
-static void trianglex_xor(void* con,
-        const GGLcoord* v0, const GGLcoord* v1, const GGLcoord* v2)
-{
-    trianglex_big(con,v0,v1,v2);
-    trianglex_small(con,v0,v1,v2);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Triangle
-#endif
-
-void trianglex_validate(void *con,
-        const GGLcoord* v0, const GGLcoord* v1, const GGLcoord* v2)
-{
-    GGL_CONTEXT(c, con);
-    ggl_pick(c);
-    if (c->state.needs.p & GGL_NEED_MASK(P_AA)) {
-        c->procs.trianglex = DEBUG_TRANGLES ? trianglex_debug : aa_trianglex;
-    } else {
-        c->procs.trianglex = DEBUG_TRANGLES ? trianglex_debug : trianglex_big;
-    }
-    c->procs.trianglex(con, v0, v1, v2);
-}
-
-// ----------------------------------------------------------------------------
-
-void trianglex_small(void* con,
-        const GGLcoord* v0, const GGLcoord* v1, const GGLcoord* v2)
-{
-    GGL_CONTEXT(c, con);
-
-    // vertices are in 28.4 fixed point, which allows
-    // us to use 32 bits multiplies below.
-    int32_t x0 = v0[0];
-    int32_t y0 = v0[1];
-    int32_t x1 = v1[0];
-    int32_t y1 = v1[1];
-    int32_t x2 = v2[0];
-    int32_t y2 = v2[1];
-
-    int32_t dx01 = x0 - x1;
-    int32_t dy20 = y2 - y0;
-    int32_t dy01 = y0 - y1;
-    int32_t dx20 = x2 - x0;
-
-    // The code below works only with CCW triangles
-    // so if we get a CW triangle, we need to swap two of its vertices
-    if (dx01*dy20 < dy01*dx20) {
-        swap(x0, x1);
-        swap(y0, y1);
-        dx01 = x0 - x1;
-        dy01 = y0 - y1;
-        dx20 = x2 - x0;
-        dy20 = y2 - y0;
-    }
-    int32_t dx12 = x1 - x2;
-    int32_t dy12 = y1 - y2;
-
-    // bounding box & scissor
-    const int32_t bminx = TRI_FLOOR(min(x0, x1, x2)) >> TRI_FRACTION_BITS;
-    const int32_t bminy = TRI_FLOOR(min(y0, y1, y2)) >> TRI_FRACTION_BITS;
-    const int32_t bmaxx = TRI_CEIL( max(x0, x1, x2)) >> TRI_FRACTION_BITS;
-    const int32_t bmaxy = TRI_CEIL( max(y0, y1, y2)) >> TRI_FRACTION_BITS;
-    const int32_t minx = max(bminx, c->state.scissor.left);
-    const int32_t miny = max(bminy, c->state.scissor.top);
-    const int32_t maxx = min(bmaxx, c->state.scissor.right);
-    const int32_t maxy = min(bmaxy, c->state.scissor.bottom);
-    if ((minx >= maxx) || (miny >= maxy))
-        return; // too small or clipped out...
-
-    // step equations to the bounding box and snap to pixel center
-    const int32_t my = (miny << TRI_FRACTION_BITS) + TRI_HALF;
-    const int32_t mx = (minx << TRI_FRACTION_BITS) + TRI_HALF;
-    int32_t ey0 = dy01 * (x0 - mx) - dx01 * (y0 - my);
-    int32_t ey1 = dy12 * (x1 - mx) - dx12 * (y1 - my);
-    int32_t ey2 = dy20 * (x2 - mx) - dx20 * (y2 - my);
-
-    // right-exclusive fill rule, to avoid rare cases
-    // of over drawing
-    if (dy01<0 || (dy01 == 0 && dx01>0)) ey0++;
-    if (dy12<0 || (dy12 == 0 && dx12>0)) ey1++;
-    if (dy20<0 || (dy20 == 0 && dx20>0)) ey2++;
-    
-    c->init_y(c, miny);
-    for (int32_t y = miny; y < maxy; y++) {
-        int32_t ex0 = ey0;
-        int32_t ex1 = ey1;
-        int32_t ex2 = ey2;    
-        int32_t xl, xr;
-        for (xl=minx ; xl<maxx ; xl++) {
-            if (ex0>0 && ex1>0 && ex2>0)
-                break; // all strictly positive
-            ex0 -= dy01 << TRI_FRACTION_BITS;
-            ex1 -= dy12 << TRI_FRACTION_BITS;
-            ex2 -= dy20 << TRI_FRACTION_BITS;
-        }
-        xr = xl;
-        for ( ; xr<maxx ; xr++) {
-            if (!(ex0>0 && ex1>0 && ex2>0))
-                break; // not all strictly positive
-            ex0 -= dy01 << TRI_FRACTION_BITS;
-            ex1 -= dy12 << TRI_FRACTION_BITS;
-            ex2 -= dy20 << TRI_FRACTION_BITS;
-        }
-
-        if (xl < xr) {
-            c->iterators.xl = xl;
-            c->iterators.xr = xr;
-            c->scanline(c);
-        }
-        c->step_y(c);
-
-        ey0 += dx01 << TRI_FRACTION_BITS;
-        ey1 += dx12 << TRI_FRACTION_BITS;
-        ey2 += dx20 << TRI_FRACTION_BITS;
-    }
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-// the following routine fills a triangle via edge stepping, which
-// unfortunately requires divisions in the setup phase to get right,
-// it should probably only be used for relatively large trianges
-
-
-// x = y*DX/DY    (ou DX and DY are constants, DY > 0, et y >= 0)
-// 
-// for an equation of the type:
-//      x' = y*K/2^p     (with K and p constants "carefully chosen")
-// 
-// We can now do a DDA without precision loss. We define 'e' by:
-//      x' - x = y*(DX/DY - K/2^p) = y*e
-// 
-// If we choose K = round(DX*2^p/DY) then,
-//      abs(e) <= 1/2^(p+1) by construction
-// 
-// therefore abs(x'-x) = y*abs(e) <= y/2^(p+1) <= DY/2^(p+1) <= DMAX/2^(p+1)
-// 
-// which means that if DMAX <= 2^p, therefore abs(x-x') <= 1/2, including
-// at the last line. In fact, it's even a strict inequality except in one
-// extrem case (DY == DMAX et e = +/- 1/2)
-// 
-// Applying that to our coordinates, we need 2^p >= 4096*16 = 65536
-// so p = 16 is enough, we're so lucky!
-
-const int TRI_ITERATORS_BITS = 16;
-
-struct Edge
-{
-  int32_t  x;      // edge position in 16.16 coordinates
-  int32_t  x_incr; // on each step, increment x by that amount
-  int32_t  y_top;  // starting scanline, 16.4 format
-  int32_t  y_bot;
-};
-
-static void
-edge_dump( Edge*  edge )
-{
-  ALOGI( "  top=%d (%.3f)  bot=%d (%.3f)  x=%d (%.3f)  ix=%d (%.3f)",
-        edge->y_top, edge->y_top/float(TRI_ONE),
-		edge->y_bot, edge->y_bot/float(TRI_ONE),
-		edge->x, edge->x/float(FIXED_ONE),
-		edge->x_incr, edge->x_incr/float(FIXED_ONE) );
-}
-
-static void
-triangle_dump_edges( Edge*  edges,
-                     int            count )
-{ 
-    ALOGI( "%d edge%s:\n", count, count == 1 ? "" : "s" );
-	for ( ; count > 0; count--, edges++ )
-	  edge_dump( edges );
-}
-
-// the following function sets up an edge, it assumes
-// that ymin and ymax are in already in the 'reduced'
-// format
-static __attribute__((noinline))
-void edge_setup(
-        Edge*           edges,
-        int*            pcount,
-        const GGLcoord* p1,
-        const GGLcoord* p2,
-        int32_t         ymin,
-        int32_t         ymax )
-{
-	const GGLfixed*  top = p1;
-	const GGLfixed*  bot = p2;
-	Edge*    edge = edges + *pcount;
-
-	if (top[1] > bot[1]) {
-        swap(top, bot);
-	}
-
-	int  y1 = top[1] | 1;
-	int  y2 = bot[1] | 1;
-	int  dy = y2 - y1;
-
-	if ( dy == 0 || y1 > ymax || y2 < ymin )
-		return;
-
-	if ( y1 > ymin )
-		ymin = TRI_SNAP_NEXT_HALF(y1);
-	
-	if ( y2 < ymax )
-		ymax = TRI_SNAP_PREV_HALF(y2);
-
-	if ( ymin > ymax )  // when the edge doesn't cross any scanline
-	  return;
-
-	const int x1 = top[0];
-	const int dx = bot[0] - x1;
-    const int shift = TRI_ITERATORS_BITS - TRI_FRACTION_BITS;
-
-	// setup edge fields
-    // We add 0.5 to edge->x here because it simplifies the rounding
-    // in triangle_sweep_edges() -- this doesn't change the ordering of 'x'
-	edge->x      = (x1 << shift) + (1LU << (TRI_ITERATORS_BITS-1));
-	edge->x_incr = 0;
-	edge->y_top  = ymin;
-	edge->y_bot  = ymax;
-
-	if (ggl_likely(ymin <= ymax && dx)) {
-        edge->x_incr = gglDivQ16(dx, dy);
-    }
-    if (ggl_likely(y1 < ymin)) {
-        int32_t xadjust = (edge->x_incr * (ymin-y1)) >> TRI_FRACTION_BITS;
-        edge->x += xadjust;
-    }
-  
-	++*pcount;
-}
-
-
-static void
-triangle_sweep_edges( Edge*  left,
-                      Edge*  right,
-					  int            ytop,
-					  int            ybot,
-					  context_t*     c )
-{
-    int count = ((ybot - ytop)>>TRI_FRACTION_BITS) + 1;
-    if (count<=0) return;
-
-    // sort the edges horizontally
-    if ((left->x > right->x) || 
-        ((left->x == right->x) && (left->x_incr > right->x_incr))) {
-        swap(left, right);
-    }
-
-    int left_x = left->x;
-    int right_x = right->x;
-    const int left_xi = left->x_incr;
-    const int right_xi  = right->x_incr;
-    left->x  += left_xi * count;
-    right->x += right_xi * count;
-
-	const int xmin = c->state.scissor.left;
-	const int xmax = c->state.scissor.right;
-    do {
-        // horizontal scissoring
-        const int32_t xl = max(left_x  >> TRI_ITERATORS_BITS, xmin);
-        const int32_t xr = min(right_x >> TRI_ITERATORS_BITS, xmax);
-        left_x  += left_xi;
-        right_x += right_xi;
-        // invoke the scanline rasterizer
-        if (ggl_likely(xl < xr)) {
-            c->iterators.xl = xl;
-            c->iterators.xr = xr;
-            c->scanline(c);
-        }
-		c->step_y(c);
-	} while (--count);
-}
-
-
-void trianglex_big(void* con,
-        const GGLcoord* v0, const GGLcoord* v1, const GGLcoord* v2)
-{
-    GGL_CONTEXT(c, con);
-
-    Edge edges[3];
-	int num_edges = 0;
-	int32_t ymin = TRI_FROM_INT(c->state.scissor.top)    + TRI_HALF;
-	int32_t ymax = TRI_FROM_INT(c->state.scissor.bottom) - TRI_HALF;
-	    
-	edge_setup( edges, &num_edges, v0, v1, ymin, ymax );
-	edge_setup( edges, &num_edges, v0, v2, ymin, ymax );
-	edge_setup( edges, &num_edges, v1, v2, ymin, ymax );
-
-    if (ggl_unlikely(num_edges<2))  // for really tiny triangles that don't
-		return;                     // cross any scanline centers
-
-    Edge* left  = &edges[0];
-    Edge* right = &edges[1];
-    Edge* other = &edges[2];
-    int32_t y_top = min(left->y_top, right->y_top);
-    int32_t y_bot = max(left->y_bot, right->y_bot);
-
-	if (ggl_likely(num_edges==3)) {
-        y_top = min(y_top, edges[2].y_top);
-        y_bot = max(y_bot, edges[2].y_bot);
-		if (edges[0].y_top > y_top) {
-            other = &edges[0];
-            left  = &edges[2];
-		} else if (edges[1].y_top > y_top) {
-            other = &edges[1];
-            right = &edges[2];
-		}
-    }
-
-    c->init_y(c, y_top >> TRI_FRACTION_BITS);
-
-    int32_t y_mid = min(left->y_bot, right->y_bot);
-    triangle_sweep_edges( left, right, y_top, y_mid, c );
-
-    // second scanline sweep loop, if necessary
-    y_mid += TRI_ONE;
-    if (y_mid <= y_bot) {
-        ((left->y_bot == y_bot) ? right : left) = other;
-        if (other->y_top < y_mid) {
-            other->x += other->x_incr;
-        }
-        triangle_sweep_edges( left, right, y_mid, y_bot, c );
-    }
-}
-
-void aa_trianglex(void* con,
-        const GGLcoord* a, const GGLcoord* b, const GGLcoord* c)
-{
-    GGLcoord pts[6] = { a[0], a[1], b[0], b[1], c[0], c[1] };
-    aapolyx(con, pts, 3);
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-struct AAEdge
-{
-    GGLfixed x;         // edge position in 12.16 coordinates
-    GGLfixed x_incr;    // on each y step, increment x by that amount
-    GGLfixed y_incr;    // on each x step, increment y by that amount
-    int16_t y_top;      // starting scanline, 12.4 format
-    int16_t y_bot;      // starting scanline, 12.4 format
-    void dump();
-};
-
-void AAEdge::dump()
-{
-    float tri  = 1.0f / TRI_ONE;
-    float iter = 1.0f / (1<<TRI_ITERATORS_BITS);
-    float fix  = 1.0f / FIXED_ONE;
-    ALOGD(   "x=%08x (%.3f), "
-            "x_incr=%08x (%.3f), y_incr=%08x (%.3f), "
-            "y_top=%08x (%.3f), y_bot=%08x (%.3f) ",
-        x, x*fix,
-        x_incr, x_incr*iter,
-        y_incr, y_incr*iter,
-        y_top, y_top*tri,
-        y_bot, y_bot*tri );
-}
-
-// the following function sets up an edge, it assumes
-// that ymin and ymax are in already in the 'reduced'
-// format
-static __attribute__((noinline))
-void aa_edge_setup(
-        AAEdge*         edges,
-        int*            pcount,
-        const GGLcoord* p1,
-        const GGLcoord* p2,
-        int32_t         ymin,
-        int32_t         ymax )
-{
-    const GGLfixed*  top = p1;
-    const GGLfixed*  bot = p2;
-    AAEdge* edge = edges + *pcount;
-
-    if (top[1] > bot[1])
-        swap(top, bot);
-
-    int  y1 = top[1];
-    int  y2 = bot[1];
-    int  dy = y2 - y1;
-
-    if (dy==0 || y1>ymax || y2<ymin)
-        return;
-
-    if (y1 > ymin)
-        ymin = y1;
-    
-    if (y2 < ymax)
-        ymax = y2;
-
-    const int x1 = top[0];
-    const int dx = bot[0] - x1;
-    const int shift = FIXED_BITS - TRI_FRACTION_BITS;
-
-    // setup edge fields
-    edge->x      = x1 << shift;
-    edge->x_incr = 0;
-    edge->y_top  = ymin;
-    edge->y_bot  = ymax;
-    edge->y_incr = 0x7FFFFFFF;
-
-    if (ggl_likely(ymin <= ymax && dx)) {
-        edge->x_incr = gglDivQ16(dx, dy);
-        if (dx != 0) {
-            edge->y_incr = abs(gglDivQ16(dy, dx));
-        }
-    }
-    if (ggl_likely(y1 < ymin)) {
-        int32_t xadjust = (edge->x_incr * (ymin-y1))
-                >> (TRI_FRACTION_BITS + TRI_ITERATORS_BITS - FIXED_BITS);
-        edge->x += xadjust;
-    }
-  
-    ++*pcount;
-}
-
-
-typedef int (*compar_t)(const void*, const void*);
-static int compare_edges(const AAEdge *e0, const AAEdge *e1) {
-    if (e0->y_top > e1->y_top)      return 1;
-    if (e0->y_top < e1->y_top)      return -1;
-    if (e0->x > e1->x)              return 1;
-    if (e0->x < e1->x)              return -1;
-    if (e0->x_incr > e1->x_incr)    return 1;
-    if (e0->x_incr < e1->x_incr)    return -1;
-    return 0; // same edges, should never happen
-}
-
-static inline 
-void SET_COVERAGE(int16_t*& p, int32_t value, ssize_t n)
-{
-    android_memset16((uint16_t*)p, value, n*2);
-    p += n;
-}
-
-static inline 
-void ADD_COVERAGE(int16_t*& p, int32_t value)
-{
-    value = *p + value;
-    if (value >= 0x8000)
-        value = 0x7FFF;
-    *p++ = value;
-}
-
-static inline
-void SUB_COVERAGE(int16_t*& p, int32_t value)
-{
-    value = *p - value;
-    value &= ~(value>>31);
-    *p++ = value;
-}
-
-void aapolyx(void* con,
-        const GGLcoord* pts, int count)
-{
-    /*
-     * NOTE: This routine assumes that the polygon has been clipped to the
-     * viewport already, that is, no vertex lies outside of the framebuffer.
-     * If this happens, the code below won't corrupt memory but the 
-     * coverage values may not be correct.
-     */
-    
-    GGL_CONTEXT(c, con);
-
-    // we do only quads for now (it's used for thick lines)
-    if ((count>4) || (count<2)) return;
-
-    // take scissor into account
-    const int xmin = c->state.scissor.left;
-    const int xmax = c->state.scissor.right;
-    if (xmin >= xmax) return;
-
-    // generate edges from the vertices
-    int32_t ymin = TRI_FROM_INT(c->state.scissor.top);
-    int32_t ymax = TRI_FROM_INT(c->state.scissor.bottom);
-    if (ymin >= ymax) return;
-
-    AAEdge edges[4];
-    int num_edges = 0;
-    GGLcoord const * p = pts;
-    for (int i=0 ; i<count-1 ; i++, p+=2) {
-        aa_edge_setup(edges, &num_edges, p, p+2, ymin, ymax);
-    }
-    aa_edge_setup(edges, &num_edges, p, pts, ymin, ymax );
-    if (ggl_unlikely(num_edges<2))
-        return;
-
-    // sort the edge list top to bottom, left to right.
-    qsort(edges, num_edges, sizeof(AAEdge), (compar_t)compare_edges);
-
-    int16_t* const covPtr = c->state.buffers.coverage;
-    memset(covPtr+xmin, 0, (xmax-xmin)*sizeof(*covPtr));
-
-    // now, sweep all edges in order
-    // start with the 2 first edges. We know that they share their top
-    // vertex, by construction.
-    int i = 2;
-    AAEdge* left  = &edges[0];
-    AAEdge* right = &edges[1];
-    int32_t yt = left->y_top;
-    GGLfixed l = left->x;
-    GGLfixed r = right->x;
-    int retire = 0;
-    int16_t* coverage;
-
-    // at this point we can initialize the rasterizer    
-    c->init_y(c, yt>>TRI_FRACTION_BITS);
-    c->iterators.xl = xmax;
-    c->iterators.xr = xmin;
-
-    do {
-        int32_t y = min(min(left->y_bot, right->y_bot), TRI_FLOOR(yt + TRI_ONE));
-        const int32_t shift = TRI_FRACTION_BITS + TRI_ITERATORS_BITS - FIXED_BITS;
-        const int cf_shift = (1 + TRI_FRACTION_BITS*2 + TRI_ITERATORS_BITS - 15);
-
-        // compute xmin and xmax for the left edge
-        GGLfixed l_min = gglMulAddx(left->x_incr, y - left->y_top, left->x, shift);
-        GGLfixed l_max = l;
-        l = l_min;
-        if (l_min > l_max)
-            swap(l_min, l_max);
-
-        // compute xmin and xmax for the right edge
-        GGLfixed r_min = gglMulAddx(right->x_incr, y - right->y_top, right->x, shift);
-        GGLfixed r_max = r;
-        r = r_min;
-        if (r_min > r_max)
-            swap(r_min, r_max);
-
-        // make sure we're not touching coverage values outside of the
-        // framebuffer
-        l_min &= ~(l_min>>31);
-        r_min &= ~(r_min>>31);
-        l_max &= ~(l_max>>31);
-        r_max &= ~(r_max>>31);
-        if (gglFixedToIntFloor(l_min) >= xmax) l_min = gglIntToFixed(xmax)-1;
-        if (gglFixedToIntFloor(r_min) >= xmax) r_min = gglIntToFixed(xmax)-1;
-        if (gglFixedToIntCeil(l_max) >= xmax)  l_max = gglIntToFixed(xmax)-1;
-        if (gglFixedToIntCeil(r_max) >= xmax)  r_max = gglIntToFixed(xmax)-1;
-
-        // compute the integer versions of the above
-        const GGLfixed l_min_i = gglFloorx(l_min);
-        const GGLfixed l_max_i = gglCeilx (l_max);
-        const GGLfixed r_min_i = gglFloorx(r_min);
-        const GGLfixed r_max_i = gglCeilx (r_max);
-
-        // clip horizontally using the scissor
-        const int xml = max(xmin, gglFixedToIntFloor(l_min_i));
-        const int xmr = min(xmax, gglFixedToIntFloor(r_max_i));
-
-        // if we just stepped to a new scanline, render the previous one.
-        // and clear the coverage buffer
-        if (retire) {
-            if (c->iterators.xl < c->iterators.xr)
-                c->scanline(c);
-            c->step_y(c);
-            memset(covPtr+xmin, 0, (xmax-xmin)*sizeof(*covPtr));
-            c->iterators.xl = xml;
-            c->iterators.xr = xmr;
-        } else {
-            // update the horizontal range of this scanline
-            c->iterators.xl = min(c->iterators.xl, xml);
-            c->iterators.xr = max(c->iterators.xr, xmr);
-        }
-
-        coverage = covPtr + gglFixedToIntFloor(l_min_i);
-        if (l_min_i == gglFloorx(l_max)) {
-            
-            /*
-             *  fully traverse this pixel vertically
-             *       l_max
-             *  +-----/--+  yt
-             *  |    /   |  
-             *  |   /    |
-             *  |  /     |
-             *  +-/------+  y
-             *   l_min  (l_min_i + TRI_ONE)
-             */
-              
-            GGLfixed dx = l_max - l_min;
-            int32_t dy = y - yt;
-            int cf = gglMulx((dx >> 1) + (l_min_i + FIXED_ONE - l_max), dy,
-                FIXED_BITS + TRI_FRACTION_BITS - 15);
-            ADD_COVERAGE(coverage, cf);
-            // all pixels on the right have cf = 1.0
-        } else {
-            /*
-             *  spans several pixels in one scanline
-             *            l_max
-             *  +--------+--/-----+  yt
-             *  |        |/       |
-             *  |       /|        |
-             *  |     /  |        |
-             *  +---/----+--------+  y
-             *   l_min (l_min_i + TRI_ONE)
-             */
-
-            // handle the first pixel separately...
-            const int32_t y_incr = left->y_incr;
-            int32_t dx = TRI_FROM_FIXED(l_min_i - l_min) + TRI_ONE;
-            int32_t cf = (dx * dx * y_incr) >> cf_shift;
-            ADD_COVERAGE(coverage, cf);
-
-            // following pixels get covered by y_incr, but we need
-            // to fix-up the cf to account for previous partial pixel
-            dx = TRI_FROM_FIXED(l_min - l_min_i);
-            cf -= (dx * dx * y_incr) >> cf_shift;
-            for (int x = l_min_i+FIXED_ONE ; x < l_max_i-FIXED_ONE ; x += FIXED_ONE) {
-                cf += y_incr >> (TRI_ITERATORS_BITS-15);
-                ADD_COVERAGE(coverage, cf);
-            }
-            
-            // and the last pixel
-            dx = TRI_FROM_FIXED(l_max - l_max_i) - TRI_ONE;
-            cf += (dx * dx * y_incr) >> cf_shift;
-            ADD_COVERAGE(coverage, cf);
-        }
-        
-        // now, fill up all fully covered pixels
-        coverage = covPtr + gglFixedToIntFloor(l_max_i);
-        int cf = ((y - yt) << (15 - TRI_FRACTION_BITS));
-        if (ggl_likely(cf >= 0x8000)) {
-            SET_COVERAGE(coverage, 0x7FFF, ((r_max - l_max_i)>>FIXED_BITS)+1);
-        } else {
-            for (int x=l_max_i ; x<r_max ; x+=FIXED_ONE) {
-                ADD_COVERAGE(coverage, cf);
-            }
-        }
-        
-        // subtract the coverage of the right edge
-        coverage = covPtr + gglFixedToIntFloor(r_min_i); 
-        if (r_min_i == gglFloorx(r_max)) {
-            GGLfixed dx = r_max - r_min;
-            int32_t dy = y - yt;
-            int cf = gglMulx((dx >> 1) + (r_min_i + FIXED_ONE - r_max), dy,
-                FIXED_BITS + TRI_FRACTION_BITS - 15);
-            SUB_COVERAGE(coverage, cf);
-            // all pixels on the right have cf = 1.0
-        } else {
-            // handle the first pixel separately...
-            const int32_t y_incr = right->y_incr;
-            int32_t dx = TRI_FROM_FIXED(r_min_i - r_min) + TRI_ONE;
-            int32_t cf = (dx * dx * y_incr) >> cf_shift;
-            SUB_COVERAGE(coverage, cf);
-            
-            // following pixels get covered by y_incr, but we need
-            // to fix-up the cf to account for previous partial pixel
-            dx = TRI_FROM_FIXED(r_min - r_min_i);
-            cf -= (dx * dx * y_incr) >> cf_shift;
-            for (int x = r_min_i+FIXED_ONE ; x < r_max_i-FIXED_ONE ; x += FIXED_ONE) {
-                cf += y_incr >> (TRI_ITERATORS_BITS-15);
-                SUB_COVERAGE(coverage, cf);
-            }
-            
-            // and the last pixel
-            dx = TRI_FROM_FIXED(r_max - r_max_i) - TRI_ONE;
-            cf += (dx * dx * y_incr) >> cf_shift;
-            SUB_COVERAGE(coverage, cf);
-        }
-
-        // did we reach the end of an edge? if so, get a new one.
-        if (y == left->y_bot || y == right->y_bot) {
-            // bail out if we're done
-            if (i>=num_edges)
-                break;
-            if (y == left->y_bot)
-                left = &edges[i++];
-            if (y == right->y_bot)
-                right = &edges[i++];
-        }
-
-        // next scanline
-        yt = y;
-        
-        // did we just finish a scanline?        
-        retire = (y << (32-TRI_FRACTION_BITS)) == 0;
-    } while (true);
-
-    // render the last scanline
-    if (c->iterators.xl < c->iterators.xr)
-        c->scanline(c);
-}
-
-}; // namespace android
diff --git a/libpixelflinger/trap.h b/libpixelflinger/trap.h
deleted file mode 100644
index 7cce7b3..0000000
--- a/libpixelflinger/trap.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* libs/pixelflinger/trap.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-
-#ifndef ANDROID_TRAP_H
-#define ANDROID_TRAP_H
-
-#include <private/pixelflinger/ggl_context.h>
-
-namespace android {
-
-void ggl_init_trap(context_t* c);
-void ggl_state_changed(context_t* c, int flags);
-
-}; // namespace android
-
-#endif
diff --git a/libprocessgroup/Android.bp b/libprocessgroup/Android.bp
index 0207a75..bda11e9 100644
--- a/libprocessgroup/Android.bp
+++ b/libprocessgroup/Android.bp
@@ -3,6 +3,7 @@
     vendor_available: true,
     recovery_available: true,
     host_supported: true,
+    native_bridge_supported: true,
     export_include_dirs: ["include"],
     target: {
         linux_bionic: {
@@ -12,6 +13,11 @@
             enabled: true,
         },
     },
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "29",
 }
 
 cc_library {
@@ -23,6 +29,7 @@
     ],
     name: "libprocessgroup",
     host_supported: true,
+    native_bridge_supported: true,
     recovery_available: true,
     vendor_available: true,
     vndk: {
@@ -50,4 +57,9 @@
         "-Werror",
         "-Wexit-time-destructors",
     ],
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "29",
 }
diff --git a/libprocessgroup/OWNERS b/libprocessgroup/OWNERS
index bfa730a..27b9a03 100644
--- a/libprocessgroup/OWNERS
+++ b/libprocessgroup/OWNERS
@@ -1,2 +1,3 @@
 ccross@google.com
+surenb@google.com
 tomcherry@google.com
diff --git a/libprocessgroup/cgroup_map.cpp b/libprocessgroup/cgroup_map.cpp
index 20ae2be..2fc920b 100644
--- a/libprocessgroup/cgroup_map.cpp
+++ b/libprocessgroup/cgroup_map.cpp
@@ -71,7 +71,12 @@
     if (!HasValue()) return false;
 
     if (state_ == UNKNOWN) {
-        state_ = access(GetProcsFilePath("", 0, 0).c_str(), F_OK) == 0 ? USABLE : MISSING;
+        if (ACgroupController_getFlags != nullptr) {
+            uint32_t flags = ACgroupController_getFlags(controller_);
+            state_ = (flags & CGROUPRC_CONTROLLER_FLAG_MOUNTED) != 0 ? USABLE : MISSING;
+        } else {
+            state_ = access(GetProcsFilePath("", 0, 0).c_str(), F_OK) == 0 ? USABLE : MISSING;
+        }
     }
 
     return state_ == USABLE;
@@ -161,9 +166,16 @@
     auto controller_count = ACgroupFile_getControllerCount();
     for (uint32_t i = 0; i < controller_count; ++i) {
         const ACgroupController* controller = ACgroupFile_getController(i);
-        LOG(INFO) << "\t" << ACgroupController_getName(controller) << " ver "
-                  << ACgroupController_getVersion(controller) << " path "
-                  << ACgroupController_getPath(controller);
+        if (ACgroupController_getFlags != nullptr) {
+            LOG(INFO) << "\t" << ACgroupController_getName(controller) << " ver "
+                      << ACgroupController_getVersion(controller) << " path "
+                      << ACgroupController_getPath(controller) << " flags "
+                      << ACgroupController_getFlags(controller);
+        } else {
+            LOG(INFO) << "\t" << ACgroupController_getName(controller) << " ver "
+                      << ACgroupController_getVersion(controller) << " path "
+                      << ACgroupController_getPath(controller);
+        }
     }
 }
 
diff --git a/libprocessgroup/cgrouprc/Android.bp b/libprocessgroup/cgrouprc/Android.bp
index 9d5afeb..0af75bb 100644
--- a/libprocessgroup/cgrouprc/Android.bp
+++ b/libprocessgroup/cgrouprc/Android.bp
@@ -21,6 +21,7 @@
     // modules should use libprocessgroup which links to the LL-NDK library
     // defined below. The static library is built for tests.
     vendor_available: false,
+    native_bridge_supported: true,
     srcs: [
         "cgroup_controller.cpp",
         "cgroup_file.cpp",
@@ -55,6 +56,7 @@
 llndk_library {
     name: "libcgrouprc",
     symbol_file: "libcgrouprc.llndk.txt",
+    native_bridge_supported: true,
     export_include_dirs: [
         "include",
     ],
diff --git a/libprocessgroup/cgrouprc/cgroup_controller.cpp b/libprocessgroup/cgrouprc/cgroup_controller.cpp
index d064d31..5a326e5 100644
--- a/libprocessgroup/cgrouprc/cgroup_controller.cpp
+++ b/libprocessgroup/cgrouprc/cgroup_controller.cpp
@@ -27,6 +27,11 @@
     return controller->version();
 }
 
+uint32_t ACgroupController_getFlags(const ACgroupController* controller) {
+    CHECK(controller != nullptr);
+    return controller->flags();
+}
+
 const char* ACgroupController_getName(const ACgroupController* controller) {
     CHECK(controller != nullptr);
     return controller->name();
diff --git a/libprocessgroup/cgrouprc/include/android/cgrouprc.h b/libprocessgroup/cgrouprc/include/android/cgrouprc.h
index 0f6a9cd..0ce5123 100644
--- a/libprocessgroup/cgrouprc/include/android/cgrouprc.h
+++ b/libprocessgroup/cgrouprc/include/android/cgrouprc.h
@@ -66,10 +66,21 @@
         __INTRODUCED_IN(29);
 
 /**
- * Flag bitmask to be used when ACgroupController_getFlags can be exported
+ * Flag bitmask used in ACgroupController_getFlags
  */
 #define CGROUPRC_CONTROLLER_FLAG_MOUNTED 0x1
 
+#if __ANDROID_API__ >= __ANDROID_API_R__
+
+/**
+ * Returns the flags bitmask of the given controller.
+ * If the given controller is null, return 0.
+ */
+__attribute__((warn_unused_result, weak)) uint32_t ACgroupController_getFlags(
+        const ACgroupController*) __INTRODUCED_IN(30);
+
+#endif
+
 /**
  * Returns the name of the given controller.
  * If the given controller is null, return nullptr.
diff --git a/libprocessgroup/cgrouprc/libcgrouprc.llndk.txt b/libprocessgroup/cgrouprc/libcgrouprc.llndk.txt
index 91df392..ce5c419 100644
--- a/libprocessgroup/cgrouprc/libcgrouprc.llndk.txt
+++ b/libprocessgroup/cgrouprc/libcgrouprc.llndk.txt
@@ -9,3 +9,10 @@
   local:
     *;
 };
+
+LIBCGROUPRC_30 { # introduced=30
+  global:
+    ACgroupController_getFlags;
+  local:
+    *;
+};
diff --git a/libprocessgroup/cgrouprc_format/Android.bp b/libprocessgroup/cgrouprc_format/Android.bp
index dfbeed7..559a869 100644
--- a/libprocessgroup/cgrouprc_format/Android.bp
+++ b/libprocessgroup/cgrouprc_format/Android.bp
@@ -16,6 +16,7 @@
     name: "libcgrouprc_format",
     host_supported: true,
     recovery_available: true,
+    native_bridge_supported: true,
     srcs: [
         "cgroup_controller.cpp",
     ],
diff --git a/libprocessgroup/include/processgroup/processgroup.h b/libprocessgroup/include/processgroup/processgroup.h
index 7e6bf45..4aa439a 100644
--- a/libprocessgroup/include/processgroup/processgroup.h
+++ b/libprocessgroup/include/processgroup/processgroup.h
@@ -30,8 +30,7 @@
 bool CgroupGetAttributePathForTask(const std::string& attr_name, int tid, std::string* path);
 
 bool SetTaskProfiles(int tid, const std::vector<std::string>& profiles, bool use_fd_cache = false);
-bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles,
-                        bool use_fd_cache = false);
+bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles);
 
 #ifndef __ANDROID_VNDK__
 
@@ -39,14 +38,22 @@
 
 bool UsePerAppMemcg();
 
+// Drop the fd cache of cgroup path. It is used for when resource caching is enabled and a process
+// loses the access to the path, the access checking (See SetCgroupAction::EnableResourceCaching)
+// should be active again. E.g. Zygote specialization for child process.
+void DropTaskProfilesResourceCaching();
+
 // Return 0 and removes the cgroup if there are no longer any processes in it.
 // Returns -1 in the case of an error occurring or if there are processes still running
 // even after retrying for up to 200ms.
-int killProcessGroup(uid_t uid, int initialPid, int signal);
+// If max_processes is not nullptr, it returns the maximum number of processes seen in the cgroup
+// during the killing process.  Note that this can be 0 if all processes from the process group have
+// already been terminated.
+int killProcessGroup(uid_t uid, int initialPid, int signal, int* max_processes = nullptr);
 
 // Returns the same as killProcessGroup(), however it does not retry, which means
 // that it only returns 0 in the case that the cgroup exists and it contains no processes.
-int killProcessGroupOnce(uid_t uid, int initialPid, int signal);
+int killProcessGroupOnce(uid_t uid, int initialPid, int signal, int* max_processes = nullptr);
 
 int createProcessGroup(uid_t uid, int initialPid, bool memControl = false);
 
diff --git a/libprocessgroup/include/processgroup/sched_policy.h b/libprocessgroup/include/processgroup/sched_policy.h
index 3c498da..945d90c 100644
--- a/libprocessgroup/include/processgroup/sched_policy.h
+++ b/libprocessgroup/include/processgroup/sched_policy.h
@@ -70,11 +70,22 @@
 extern int get_sched_policy(int tid, SchedPolicy* policy);
 
 /* Return a displayable string corresponding to policy.
- * Return value: non-NULL NUL-terminated name of unspecified length;
+ * Return value: NUL-terminated name of unspecified length, nullptr if invalid;
  * the caller is responsible for displaying the useful part of the string.
  */
 extern const char* get_sched_policy_name(SchedPolicy policy);
 
+/* Return the aggregated task profile name corresponding to cpuset policy.
+ * Return value: NUL-terminated name of unspecified length, nullptr if invalid;
+ * the caller could use it to call SetTaskProfiles.
+ */
+extern const char* get_cpuset_policy_profile_name(SchedPolicy policy);
+
+/* Return the aggregated task profile name corresponding to sched policy.
+ * Return value: NUL-terminated name of unspecified length, nullptr if invalid;
+ * the caller could use it to call SetTaskProfiles.
+ */
+extern const char* get_sched_policy_profile_name(SchedPolicy policy);
 #ifdef __cplusplus
 }
 #endif
diff --git a/libprocessgroup/processgroup.cpp b/libprocessgroup/processgroup.cpp
index d3ac26b..d669ebe 100644
--- a/libprocessgroup/processgroup.cpp
+++ b/libprocessgroup/processgroup.cpp
@@ -111,45 +111,16 @@
     return memcg_supported;
 }
 
-bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles,
-                        bool use_fd_cache) {
-    const TaskProfiles& tp = TaskProfiles::GetInstance();
+void DropTaskProfilesResourceCaching() {
+    TaskProfiles::GetInstance().DropResourceCaching();
+}
 
-    for (const auto& name : profiles) {
-        TaskProfile* profile = tp.GetProfile(name);
-        if (profile != nullptr) {
-            if (use_fd_cache) {
-                profile->EnableResourceCaching();
-            }
-            if (!profile->ExecuteForProcess(uid, pid)) {
-                PLOG(WARNING) << "Failed to apply " << name << " process profile";
-            }
-        } else {
-            PLOG(WARNING) << "Failed to find " << name << "process profile";
-        }
-    }
-
-    return true;
+bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles) {
+    return TaskProfiles::GetInstance().SetProcessProfiles(uid, pid, profiles);
 }
 
 bool SetTaskProfiles(int tid, const std::vector<std::string>& profiles, bool use_fd_cache) {
-    const TaskProfiles& tp = TaskProfiles::GetInstance();
-
-    for (const auto& name : profiles) {
-        TaskProfile* profile = tp.GetProfile(name);
-        if (profile != nullptr) {
-            if (use_fd_cache) {
-                profile->EnableResourceCaching();
-            }
-            if (!profile->ExecuteForTask(tid)) {
-                PLOG(WARNING) << "Failed to apply " << name << " task profile";
-            }
-        } else {
-            PLOG(WARNING) << "Failed to find " << name << "task profile";
-        }
-    }
-
-    return true;
+    return TaskProfiles::GetInstance().SetTaskProfiles(tid, profiles, use_fd_cache);
 }
 
 static std::string ConvertUidToPath(const char* cgroup, uid_t uid) {
@@ -329,7 +300,8 @@
     return feof(fd.get()) ? processes : -1;
 }
 
-static int KillProcessGroup(uid_t uid, int initialPid, int signal, int retries) {
+static int KillProcessGroup(uid_t uid, int initialPid, int signal, int retries,
+                            int* max_processes) {
     std::string cpuacct_path;
     std::string memory_path;
 
@@ -344,9 +316,16 @@
 
     std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now();
 
+    if (max_processes != nullptr) {
+        *max_processes = 0;
+    }
+
     int retry = retries;
     int processes;
     while ((processes = DoKillProcessGroupOnce(cgroup, uid, initialPid, signal)) > 0) {
+        if (max_processes != nullptr && processes > *max_processes) {
+            *max_processes = processes;
+        }
         LOG(VERBOSE) << "Killed " << processes << " processes for processgroup " << initialPid;
         if (retry > 0) {
             std::this_thread::sleep_for(5ms);
@@ -387,12 +366,12 @@
     }
 }
 
-int killProcessGroup(uid_t uid, int initialPid, int signal) {
-    return KillProcessGroup(uid, initialPid, signal, 40 /*retries*/);
+int killProcessGroup(uid_t uid, int initialPid, int signal, int* max_processes) {
+    return KillProcessGroup(uid, initialPid, signal, 40 /*retries*/, max_processes);
 }
 
-int killProcessGroupOnce(uid_t uid, int initialPid, int signal) {
-    return KillProcessGroup(uid, initialPid, signal, 0 /*retries*/);
+int killProcessGroupOnce(uid_t uid, int initialPid, int signal, int* max_processes) {
+    return KillProcessGroup(uid, initialPid, signal, 0 /*retries*/, max_processes);
 }
 
 int createProcessGroup(uid_t uid, int initialPid, bool memControl) {
diff --git a/libprocessgroup/profiles/Android.bp b/libprocessgroup/profiles/Android.bp
index e05a690..ccc6f62 100644
--- a/libprocessgroup/profiles/Android.bp
+++ b/libprocessgroup/profiles/Android.bp
@@ -89,20 +89,23 @@
         "test_vendor.cpp",
     ],
     static_libs: [
+        "libbase",
         "libgmock",
+        "liblog",
+        "libjsoncpp",
         "libjsonpbverify",
         "libjsonpbparse",
         "libprocessgroup_proto",
     ],
     shared_libs: [
-        "libbase",
-        "liblog",
-        "libjsoncpp",
         "libprotobuf-cpp-full",
     ],
-    target: {
-        android: {
-            test_config: "vts_processgroup_validate_test.xml",
-        },
-    },
+    test_suites: [
+        "vts",
+    ],
+}
+
+vts_config {
+    name: "VtsProcessgroupValidateTest",
+    test_config: "vts_processgroup_validate_test.xml",
 }
diff --git a/libprocessgroup/profiles/Android.mk b/libprocessgroup/profiles/Android.mk
deleted file mode 100644
index eab96d4..0000000
--- a/libprocessgroup/profiles/Android.mk
+++ /dev/null
@@ -1,21 +0,0 @@
-#
-# Copyright (C) 2019 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := VtsProcessgroupValidateTest
--include test/vts/tools/build/Android.host_config.mk
diff --git a/libprocessgroup/profiles/cgroups.json b/libprocessgroup/profiles/cgroups.json
index 5871a63..0341902 100644
--- a/libprocessgroup/profiles/cgroups.json
+++ b/libprocessgroup/profiles/cgroups.json
@@ -39,6 +39,13 @@
       "Mode": "0755",
       "UID": "system",
       "GID": "system"
+    },
+    {
+      "Controller": "freezer",
+      "Path": "/dev/freezer",
+      "Mode": "0755",
+      "UID": "system",
+      "GID": "system"
     }
   ],
   "Cgroups2": {
diff --git a/libprocessgroup/profiles/task_profiles.json b/libprocessgroup/profiles/task_profiles.json
index 74a39cd..bc6bc7c 100644
--- a/libprocessgroup/profiles/task_profiles.json
+++ b/libprocessgroup/profiles/task_profiles.json
@@ -15,7 +15,6 @@
       "Controller": "cpuset",
       "File": "top-app/cpus"
     },
-
     {
       "Name": "MemLimit",
       "Controller": "memory",
@@ -44,12 +43,17 @@
     {
       "Name": "UClampMin",
       "Controller": "cpu",
-      "File": "cpu.util.min"
+      "File": "cpu.uclamp.min"
     },
     {
       "Name": "UClampMax",
       "Controller": "cpu",
-      "File": "cpu.util.max"
+      "File": "cpu.uclamp.max"
+    },
+    {
+      "Name": "FreezerState",
+      "Controller": "freezer",
+      "File": "frozen/freezer.state"
     }
   ],
 
@@ -68,6 +72,32 @@
       ]
     },
     {
+      "Name": "Frozen",
+      "Actions": [
+        {
+          "Name": "JoinCgroup",
+          "Params":
+          {
+            "Controller": "freezer",
+            "Path": "frozen"
+          }
+        }
+      ]
+    },
+    {
+      "Name": "Unfrozen",
+      "Actions": [
+        {
+          "Name": "JoinCgroup",
+          "Params":
+          {
+            "Controller": "freezer",
+            "Path": ""
+          }
+        }
+      ]
+    },
+    {
       "Name": "NormalPerformance",
       "Actions": [
         {
@@ -119,6 +149,19 @@
         }
       ]
     },
+    {
+      "Name": "CameraServicePerformance",
+      "Actions": [
+        {
+          "Name": "JoinCgroup",
+          "Params":
+          {
+            "Controller": "schedtune",
+            "Path": "camera-daemon"
+          }
+        }
+      ]
+    },
 
     {
       "Name": "CpuPolicySpread",
@@ -493,6 +536,79 @@
           }
         }
       ]
+    },
+    {
+      "Name": "FreezerThawed",
+      "Actions": [
+        {
+          "Name": "SetAttribute",
+          "Params":
+          {
+            "Name": "FreezerState",
+            "Value": "THAWED"
+          }
+        }
+      ]
+    },
+    {
+      "Name": "FreezerFrozen",
+      "Actions": [
+        {
+          "Name": "SetAttribute",
+          "Params":
+          {
+            "Name": "FreezerState",
+            "Value": "FROZEN"
+          }
+        }
+      ]
+    }
+  ],
+
+  "AggregateProfiles": [
+    {
+      "Name": "SCHED_SP_DEFAULT",
+      "Profiles": [ "TimerSlackNormal" ]
+    },
+    {
+      "Name": "SCHED_SP_BACKGROUND",
+      "Profiles": [ "HighEnergySaving", "LowIoPriority", "TimerSlackHigh" ]
+    },
+    {
+      "Name": "SCHED_SP_FOREGROUND",
+      "Profiles": [ "HighPerformance", "HighIoPriority", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "SCHED_SP_TOP_APP",
+      "Profiles": [ "MaxPerformance", "MaxIoPriority", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "SCHED_SP_RT_APP",
+      "Profiles": [ "RealtimePerformance", "MaxIoPriority", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "CPUSET_SP_DEFAULT",
+      "Profiles": [ "TimerSlackNormal" ]
+    },
+    {
+      "Name": "CPUSET_SP_BACKGROUND",
+      "Profiles": [ "HighEnergySaving", "ProcessCapacityLow", "LowIoPriority", "TimerSlackHigh" ]
+    },
+    {
+      "Name": "CPUSET_SP_FOREGROUND",
+      "Profiles": [ "HighPerformance", "ProcessCapacityHigh", "HighIoPriority", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "CPUSET_SP_TOP_APP",
+      "Profiles": [ "MaxPerformance", "ProcessCapacityMax", "MaxIoPriority", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "CPUSET_SP_SYSTEM",
+      "Profiles": [ "ServiceCapacityLow", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "CPUSET_SP_RESTRICTED",
+      "Profiles": [ "ServiceCapacityRestricted", "TimerSlackNormal" ]
     }
   ]
 }
diff --git a/libprocessgroup/profiles/task_profiles.proto b/libprocessgroup/profiles/task_profiles.proto
index 578f0d3..1de4395 100644
--- a/libprocessgroup/profiles/task_profiles.proto
+++ b/libprocessgroup/profiles/task_profiles.proto
@@ -18,10 +18,11 @@
 
 package android.profiles;
 
-// Next: 3
+// Next: 4
 message TaskProfiles {
     repeated Attribute attributes = 1 [json_name = "Attributes"];
     repeated Profile profiles = 2 [json_name = "Profiles"];
+    repeated AggregateProfiles aggregateprofiles = 3 [json_name = "AggregateProfiles"];
 }
 
 // Next: 4
@@ -42,3 +43,9 @@
     string name = 1 [json_name = "Name"];
     map<string, string> params = 2 [json_name = "Params"];
 }
+
+// Next: 3
+message AggregateProfiles {
+    string name = 1 [json_name = "Name"];
+    repeated string profiles = 2 [json_name = "Profiles"];
+}
diff --git a/libprocessgroup/profiles/test.cpp b/libprocessgroup/profiles/test.cpp
index bc9aade..b37e3e6 100644
--- a/libprocessgroup/profiles/test.cpp
+++ b/libprocessgroup/profiles/test.cpp
@@ -33,14 +33,14 @@
 }
 
 // Test suite instantiations
-INSTANTIATE_TEST_SUITE_P(, JsonSchemaTest,
+INSTANTIATE_TEST_SUITE_P(Cgroups, JsonSchemaTest,
                          ::testing::Values(MakeTestParam<Cgroups>("/cgroups.json"),
                                            MakeTestParam<Cgroups>("/cgroups.recovery.json"),
                                            MakeTestParam<TaskProfiles>("/task_profiles.json")));
-INSTANTIATE_TEST_SUITE_P(, CgroupsTest,
+INSTANTIATE_TEST_SUITE_P(Cgroups, CgroupsTest,
                          ::testing::Values(MakeTestParam<Cgroups>("/cgroups.json"),
                                            MakeTestParam<Cgroups>("/cgroups.recovery.json")));
-INSTANTIATE_TEST_SUITE_P(, TaskProfilesTest,
+INSTANTIATE_TEST_SUITE_P(TaskProfiles, TaskProfilesTest,
                          ::testing::Values(MakeTestParam<TaskProfiles>("/task_profiles.json")));
 
 }  // namespace profiles
diff --git a/libprocessgroup/sched_policy.cpp b/libprocessgroup/sched_policy.cpp
index 15f8139..698e74d 100644
--- a/libprocessgroup/sched_policy.cpp
+++ b/libprocessgroup/sched_policy.cpp
@@ -46,34 +46,17 @@
 
     switch (policy) {
         case SP_BACKGROUND:
-            return SetTaskProfiles(tid,
-                                   {"HighEnergySaving", "ProcessCapacityLow", "LowIoPriority",
-                                    "TimerSlackHigh"},
-                                   true)
-                           ? 0
-                           : -1;
+            return SetTaskProfiles(tid, {"CPUSET_SP_BACKGROUND"}, true) ? 0 : -1;
         case SP_FOREGROUND:
         case SP_AUDIO_APP:
         case SP_AUDIO_SYS:
-            return SetTaskProfiles(tid,
-                                   {"HighPerformance", "ProcessCapacityHigh", "HighIoPriority",
-                                    "TimerSlackNormal"},
-                                   true)
-                           ? 0
-                           : -1;
+            return SetTaskProfiles(tid, {"CPUSET_SP_FOREGROUND"}, true) ? 0 : -1;
         case SP_TOP_APP:
-            return SetTaskProfiles(tid,
-                                   {"MaxPerformance", "ProcessCapacityMax", "MaxIoPriority",
-                                    "TimerSlackNormal"},
-                                   true)
-                           ? 0
-                           : -1;
+            return SetTaskProfiles(tid, {"CPUSET_SP_TOP_APP"}, true) ? 0 : -1;
         case SP_SYSTEM:
-            return SetTaskProfiles(tid, {"ServiceCapacityLow", "TimerSlackNormal"}, true) ? 0 : -1;
+            return SetTaskProfiles(tid, {"CPUSET_SP_SYSTEM"}, true) ? 0 : -1;
         case SP_RESTRICTED:
-            return SetTaskProfiles(tid, {"ServiceCapacityRestricted", "TimerSlackNormal"}, true)
-                           ? 0
-                           : -1;
+            return SetTaskProfiles(tid, {"CPUSET_SP_RESTRICTED"}, true) ? 0 : -1;
         default:
             break;
     }
@@ -134,17 +117,17 @@
 
     switch (policy) {
         case SP_BACKGROUND:
-            return SetTaskProfiles(tid, {"HighEnergySaving", "TimerSlackHigh"}, true) ? 0 : -1;
+            return SetTaskProfiles(tid, {"SCHED_SP_BACKGROUND"}, true) ? 0 : -1;
         case SP_FOREGROUND:
         case SP_AUDIO_APP:
         case SP_AUDIO_SYS:
-            return SetTaskProfiles(tid, {"HighPerformance", "TimerSlackNormal"}, true) ? 0 : -1;
+            return SetTaskProfiles(tid, {"SCHED_SP_FOREGROUND"}, true) ? 0 : -1;
         case SP_TOP_APP:
-            return SetTaskProfiles(tid, {"MaxPerformance", "TimerSlackNormal"}, true) ? 0 : -1;
+            return SetTaskProfiles(tid, {"SCHED_SP_TOP_APP"}, true) ? 0 : -1;
         case SP_RT_APP:
-            return SetTaskProfiles(tid, {"RealtimePerformance", "TimerSlackNormal"}, true) ? 0 : -1;
+            return SetTaskProfiles(tid, {"SCHED_SP_RT_APP"}, true) ? 0 : -1;
         default:
-            return SetTaskProfiles(tid, {"TimerSlackNormal"}, true) ? 0 : -1;
+            return SetTaskProfiles(tid, {"SCHED_SP_DEFAULT"}, true) ? 0 : -1;
     }
 
     return 0;
@@ -155,8 +138,17 @@
     return enabled;
 }
 
+static bool schedtune_enabled() {
+    return (CgroupMap::GetInstance().FindController("schedtune").IsUsable());
+}
+
+static bool cpuctl_enabled() {
+    return (CgroupMap::GetInstance().FindController("cpu").IsUsable());
+}
+
 bool schedboost_enabled() {
-    static bool enabled = (CgroupMap::GetInstance().FindController("schedtune").IsUsable());
+    static bool enabled = schedtune_enabled() || cpuctl_enabled();
+
     return enabled;
 }
 
@@ -179,7 +171,9 @@
 
     std::string group;
     if (schedboost_enabled()) {
-        if (getCGroupSubsys(tid, "schedtune", group) < 0) return -1;
+        if ((getCGroupSubsys(tid, "schedtune", group) < 0) &&
+            (getCGroupSubsys(tid, "cpu", group) < 0))
+		return -1;
     }
     if (group.empty() && cpusets_enabled()) {
         if (getCGroupSubsys(tid, "cpuset", group) < 0) return -1;
@@ -229,7 +223,45 @@
     };
     static_assert(arraysize(kSchedPolicyNames) == SP_CNT, "missing name");
     if (policy < SP_BACKGROUND || policy >= SP_CNT) {
-        return "error";
+        return nullptr;
     }
     return kSchedPolicyNames[policy];
 }
+
+const char* get_cpuset_policy_profile_name(SchedPolicy policy) {
+    /*
+     *  cpuset profile array for:
+     *  SP_DEFAULT(-1), SP_BACKGROUND(0), SP_FOREGROUND(1),
+     *  SP_SYSTEM(2), SP_AUDIO_APP(3), SP_AUDIO_SYS(4),
+     *  SP_TOP_APP(5), SP_RT_APP(6), SP_RESTRICTED(7)
+     *  index is policy + 1
+     *  this need keep in sync with SchedPolicy enum
+     */
+    static constexpr const char* kCpusetProfiles[SP_CNT + 1] = {
+            "CPUSET_SP_DEFAULT", "CPUSET_SP_BACKGROUND", "CPUSET_SP_FOREGROUND",
+            "CPUSET_SP_SYSTEM",  "CPUSET_SP_FOREGROUND", "CPUSET_SP_FOREGROUND",
+            "CPUSET_SP_TOP_APP", "CPUSET_SP_DEFAULT",    "CPUSET_SP_RESTRICTED"};
+    if (policy < SP_DEFAULT || policy >= SP_CNT) {
+        return nullptr;
+    }
+    return kCpusetProfiles[policy + 1];
+}
+
+const char* get_sched_policy_profile_name(SchedPolicy policy) {
+    /*
+     *  sched profile array for:
+     *  SP_DEFAULT(-1), SP_BACKGROUND(0), SP_FOREGROUND(1),
+     *  SP_SYSTEM(2), SP_AUDIO_APP(3), SP_AUDIO_SYS(4),
+     *  SP_TOP_APP(5), SP_RT_APP(6), SP_RESTRICTED(7)
+     *  index is policy + 1
+     *  this need keep in sync with SchedPolicy enum
+     */
+    static constexpr const char* kSchedProfiles[SP_CNT + 1] = {
+            "SCHED_SP_DEFAULT", "SCHED_SP_BACKGROUND", "SCHED_SP_FOREGROUND",
+            "SCHED_SP_DEFAULT", "SCHED_SP_FOREGROUND", "SCHED_SP_FOREGROUND",
+            "SCHED_SP_TOP_APP", "SCHED_SP_RT_APP",     "SCHED_SP_DEFAULT"};
+    if (policy < SP_DEFAULT || policy >= SP_CNT) {
+        return nullptr;
+    }
+    return kSchedProfiles[policy + 1];
+}
diff --git a/libprocessgroup/task_profiles.cpp b/libprocessgroup/task_profiles.cpp
index edc316a..a638fca 100644
--- a/libprocessgroup/task_profiles.cpp
+++ b/libprocessgroup/task_profiles.cpp
@@ -44,6 +44,11 @@
 #define TASK_PROFILE_DB_FILE "/etc/task_profiles.json"
 #define TASK_PROFILE_DB_VENDOR_FILE "/vendor/etc/task_profiles.json"
 
+void ProfileAttribute::Reset(const CgroupController& controller, const std::string& file_name) {
+    controller_ = controller;
+    file_name_ = file_name;
+}
+
 bool ProfileAttribute::GetPathForTask(int tid, std::string* path) const {
     std::string subgroup;
     if (!controller()->GetTaskGroup(tid, &subgroup)) {
@@ -173,6 +178,15 @@
     fd_ = std::move(fd);
 }
 
+void SetCgroupAction::DropResourceCaching() {
+    std::lock_guard<std::mutex> lock(fd_mutex_);
+    if (fd_ == FDS_NOT_CACHED) {
+        return;
+    }
+
+    fd_.reset(FDS_NOT_CACHED);
+}
+
 bool SetCgroupAction::AddTidToCgroup(int tid, int fd) {
     if (tid <= 0) {
         return true;
@@ -192,22 +206,6 @@
 }
 
 bool SetCgroupAction::ExecuteForProcess(uid_t uid, pid_t pid) const {
-    std::lock_guard<std::mutex> lock(fd_mutex_);
-    if (IsFdValid()) {
-        // fd is cached, reuse it
-        if (!AddTidToCgroup(pid, fd_)) {
-            LOG(ERROR) << "Failed to add task into cgroup";
-            return false;
-        }
-        return true;
-    }
-
-    if (fd_ == FDS_INACCESSIBLE) {
-        // no permissions to access the file, ignore
-        return true;
-    }
-
-    // this is app-dependent path and fd is not cached or cached fd can't be used
     std::string procs_path = controller()->GetProcsFilePath(path_, uid, pid);
     unique_fd tmp_fd(TEMP_FAILURE_RETRY(open(procs_path.c_str(), O_WRONLY | O_CLOEXEC)));
     if (tmp_fd < 0) {
@@ -259,6 +257,41 @@
     return true;
 }
 
+bool ApplyProfileAction::ExecuteForProcess(uid_t uid, pid_t pid) const {
+    for (const auto& profile : profiles_) {
+        if (!profile->ExecuteForProcess(uid, pid)) {
+            PLOG(WARNING) << "ExecuteForProcess failed for aggregate profile";
+        }
+    }
+    return true;
+}
+
+bool ApplyProfileAction::ExecuteForTask(int tid) const {
+    for (const auto& profile : profiles_) {
+        if (!profile->ExecuteForTask(tid)) {
+            PLOG(WARNING) << "ExecuteForTask failed for aggregate profile";
+        }
+    }
+    return true;
+}
+
+void ApplyProfileAction::EnableResourceCaching() {
+    for (const auto& profile : profiles_) {
+        profile->EnableResourceCaching();
+    }
+}
+
+void ApplyProfileAction::DropResourceCaching() {
+    for (const auto& profile : profiles_) {
+        profile->DropResourceCaching();
+    }
+}
+
+void TaskProfile::MoveTo(TaskProfile* profile) {
+    profile->elements_ = std::move(elements_);
+    profile->res_cached_ = res_cached_;
+}
+
 bool TaskProfile::ExecuteForProcess(uid_t uid, pid_t pid) const {
     for (const auto& element : elements_) {
         if (!element->ExecuteForProcess(uid, pid)) {
@@ -292,6 +325,24 @@
     res_cached_ = true;
 }
 
+void TaskProfile::DropResourceCaching() {
+    if (!res_cached_) {
+        return;
+    }
+
+    for (auto& element : elements_) {
+        element->DropResourceCaching();
+    }
+
+    res_cached_ = false;
+}
+
+void TaskProfiles::DropResourceCaching() const {
+    for (auto& iter : profiles_) {
+        iter.second->DropResourceCaching();
+    }
+}
+
 TaskProfiles& TaskProfiles::GetInstance() {
     // Deliberately leak this object to avoid a race between destruction on
     // process exit and concurrent access from another thread.
@@ -334,27 +385,26 @@
         std::string controller_name = attr[i]["Controller"].asString();
         std::string file_attr = attr[i]["File"].asString();
 
-        if (attributes_.find(name) == attributes_.end()) {
-            auto controller = cg_map.FindController(controller_name);
-            if (controller.HasValue()) {
+        auto controller = cg_map.FindController(controller_name);
+        if (controller.HasValue()) {
+            auto iter = attributes_.find(name);
+            if (iter == attributes_.end()) {
                 attributes_[name] = std::make_unique<ProfileAttribute>(controller, file_attr);
             } else {
-                LOG(WARNING) << "Controller " << controller_name << " is not found";
+                iter->second->Reset(controller, file_attr);
             }
         } else {
-            LOG(WARNING) << "Attribute " << name << " is already defined";
+            LOG(WARNING) << "Controller " << controller_name << " is not found";
         }
     }
 
-    std::map<std::string, std::string> params;
-
     const Json::Value& profiles_val = root["Profiles"];
     for (Json::Value::ArrayIndex i = 0; i < profiles_val.size(); ++i) {
         const Json::Value& profile_val = profiles_val[i];
 
         std::string profile_name = profile_val["Name"].asString();
         const Json::Value& actions = profile_val["Actions"];
-        auto profile = std::make_unique<TaskProfile>();
+        auto profile = std::make_shared<TaskProfile>();
 
         for (Json::Value::ArrayIndex act_idx = 0; act_idx < actions.size(); ++act_idx) {
             const Json::Value& action_val = actions[act_idx];
@@ -413,7 +463,46 @@
                 LOG(WARNING) << "Unknown profile action: " << action_name;
             }
         }
-        profiles_[profile_name] = std::move(profile);
+        auto iter = profiles_.find(profile_name);
+        if (iter == profiles_.end()) {
+            profiles_[profile_name] = profile;
+        } else {
+            // Move the content rather that replace the profile because old profile might be
+            // referenced from an aggregate profile if vendor overrides task profiles
+            profile->MoveTo(iter->second.get());
+            profile.reset();
+        }
+    }
+
+    const Json::Value& aggregateprofiles_val = root["AggregateProfiles"];
+    for (Json::Value::ArrayIndex i = 0; i < aggregateprofiles_val.size(); ++i) {
+        const Json::Value& aggregateprofile_val = aggregateprofiles_val[i];
+
+        std::string aggregateprofile_name = aggregateprofile_val["Name"].asString();
+        const Json::Value& aggregateprofiles = aggregateprofile_val["Profiles"];
+        std::vector<std::shared_ptr<TaskProfile>> profiles;
+        bool ret = true;
+
+        for (Json::Value::ArrayIndex pf_idx = 0; pf_idx < aggregateprofiles.size(); ++pf_idx) {
+            std::string profile_name = aggregateprofiles[pf_idx].asString();
+
+            if (profile_name == aggregateprofile_name) {
+                LOG(WARNING) << "AggregateProfiles: recursive profile name: " << profile_name;
+                ret = false;
+                break;
+            } else if (profiles_.find(profile_name) == profiles_.end()) {
+                LOG(WARNING) << "AggregateProfiles: undefined profile name: " << profile_name;
+                ret = false;
+                break;
+            } else {
+                profiles.push_back(profiles_[profile_name]);
+            }
+        }
+        if (ret) {
+            auto profile = std::make_shared<TaskProfile>();
+            profile->Add(std::make_unique<ApplyProfileAction>(profiles));
+            profiles_[aggregateprofile_name] = profile;
+        }
     }
 
     return true;
@@ -436,3 +525,36 @@
     }
     return nullptr;
 }
+
+bool TaskProfiles::SetProcessProfiles(uid_t uid, pid_t pid,
+                                      const std::vector<std::string>& profiles) {
+    for (const auto& name : profiles) {
+        TaskProfile* profile = GetProfile(name);
+        if (profile != nullptr) {
+            if (!profile->ExecuteForProcess(uid, pid)) {
+                PLOG(WARNING) << "Failed to apply " << name << " process profile";
+            }
+        } else {
+            PLOG(WARNING) << "Failed to find " << name << "process profile";
+        }
+    }
+    return true;
+}
+
+bool TaskProfiles::SetTaskProfiles(int tid, const std::vector<std::string>& profiles,
+                                   bool use_fd_cache) {
+    for (const auto& name : profiles) {
+        TaskProfile* profile = GetProfile(name);
+        if (profile != nullptr) {
+            if (use_fd_cache) {
+                profile->EnableResourceCaching();
+            }
+            if (!profile->ExecuteForTask(tid)) {
+                PLOG(WARNING) << "Failed to apply " << name << " task profile";
+            }
+        } else {
+            PLOG(WARNING) << "Failed to find " << name << "task profile";
+        }
+    }
+    return true;
+}
diff --git a/libprocessgroup/task_profiles.h b/libprocessgroup/task_profiles.h
index 77bac2d..2983a09 100644
--- a/libprocessgroup/task_profiles.h
+++ b/libprocessgroup/task_profiles.h
@@ -33,6 +33,7 @@
 
     const CgroupController* controller() const { return &controller_; }
     const std::string& file_name() const { return file_name_; }
+    void Reset(const CgroupController& controller, const std::string& file_name);
 
     bool GetPathForTask(int tid, std::string* path) const;
 
@@ -51,6 +52,7 @@
     virtual bool ExecuteForTask(int) const { return false; };
 
     virtual void EnableResourceCaching() {}
+    virtual void DropResourceCaching() {}
 };
 
 // Profile actions
@@ -114,6 +116,7 @@
     virtual bool ExecuteForProcess(uid_t uid, pid_t pid) const;
     virtual bool ExecuteForTask(int tid) const;
     virtual void EnableResourceCaching();
+    virtual void DropResourceCaching();
 
     const CgroupController* controller() const { return &controller_; }
     std::string path() const { return path_; }
@@ -141,16 +144,33 @@
     TaskProfile() : res_cached_(false) {}
 
     void Add(std::unique_ptr<ProfileAction> e) { elements_.push_back(std::move(e)); }
+    void MoveTo(TaskProfile* profile);
 
     bool ExecuteForProcess(uid_t uid, pid_t pid) const;
     bool ExecuteForTask(int tid) const;
     void EnableResourceCaching();
+    void DropResourceCaching();
 
   private:
     bool res_cached_;
     std::vector<std::unique_ptr<ProfileAction>> elements_;
 };
 
+// Set aggregate profile element
+class ApplyProfileAction : public ProfileAction {
+  public:
+    ApplyProfileAction(const std::vector<std::shared_ptr<TaskProfile>>& profiles)
+        : profiles_(profiles) {}
+
+    virtual bool ExecuteForProcess(uid_t uid, pid_t pid) const;
+    virtual bool ExecuteForTask(int tid) const;
+    virtual void EnableResourceCaching();
+    virtual void DropResourceCaching();
+
+  private:
+    std::vector<std::shared_ptr<TaskProfile>> profiles_;
+};
+
 class TaskProfiles {
   public:
     // Should be used by all users
@@ -158,9 +178,12 @@
 
     TaskProfile* GetProfile(const std::string& name) const;
     const ProfileAttribute* GetAttribute(const std::string& name) const;
+    void DropResourceCaching() const;
+    bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles);
+    bool SetTaskProfiles(int tid, const std::vector<std::string>& profiles, bool use_fd_cache);
 
   private:
-    std::map<std::string, std::unique_ptr<TaskProfile>> profiles_;
+    std::map<std::string, std::shared_ptr<TaskProfile>> profiles_;
     std::map<std::string, std::unique_ptr<ProfileAttribute>> attributes_;
 
     TaskProfiles();
diff --git a/libprocinfo/Android.bp b/libprocinfo/Android.bp
index 15f03d0..ae45742 100644
--- a/libprocinfo/Android.bp
+++ b/libprocinfo/Android.bp
@@ -27,6 +27,8 @@
     name: "libprocinfo",
     defaults: ["libprocinfo_defaults"],
     vendor_available: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
     recovery_available: true,
     vndk: {
         enabled: true,
@@ -34,6 +36,7 @@
     host_supported: true,
     srcs: [
         "process.cpp",
+        "process_map.cpp",
     ],
 
     local_include_dirs: ["include"],
@@ -50,6 +53,12 @@
             enabled: false,
         },
     },
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.art.debug",
+        "com.android.art.release",
+    ],
 }
 
 // Tests
@@ -58,6 +67,7 @@
     name: "libprocinfo_test",
     defaults: ["libprocinfo_defaults"],
     host_supported: true,
+    isolated: true,
     srcs: [
         "process_test.cpp",
         "process_map_test.cpp",
diff --git a/libprocinfo/include/procinfo/process_map.h b/libprocinfo/include/procinfo/process_map.h
index b6ec3cb..569a022 100644
--- a/libprocinfo/include/procinfo/process_map.h
+++ b/libprocinfo/include/procinfo/process_map.h
@@ -176,5 +176,9 @@
                const char* name) { maps->emplace_back(start, end, flags, pgoff, inode, name); });
 }
 
+bool ReadMapFileAsyncSafe(const char* map_file, void* buffer, size_t buffer_size,
+                          const std::function<void(uint64_t, uint64_t, uint16_t, uint64_t, ino_t,
+                                                   const char*)>& callback);
+
 } /* namespace procinfo */
 } /* namespace android */
diff --git a/libprocinfo/process.cpp b/libprocinfo/process.cpp
index 9194cf3..2efd49c 100644
--- a/libprocinfo/process.cpp
+++ b/libprocinfo/process.cpp
@@ -59,7 +59,6 @@
     case 'Z':
       return kProcessStateZombie;
     default:
-      LOG(ERROR) << "unknown process state: " << *state;
       return kProcessStateUnknown;
   }
 }
diff --git a/libprocinfo/process_map.cpp b/libprocinfo/process_map.cpp
new file mode 100644
index 0000000..5e240b9
--- /dev/null
+++ b/libprocinfo/process_map.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <procinfo/process_map.h>
+
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <procinfo/process.h>
+
+namespace android {
+namespace procinfo {
+
+bool ReadMapFileAsyncSafe(const char* map_file, void* buffer, size_t buffer_size,
+                          const std::function<void(uint64_t, uint64_t, uint16_t, uint64_t, ino_t,
+                                                   const char*)>& callback) {
+  if (buffer == nullptr || buffer_size == 0) {
+    return false;
+  }
+
+  int fd = open(map_file, O_RDONLY | O_CLOEXEC);
+  if (fd == -1) {
+    return false;
+  }
+
+  char* char_buffer = reinterpret_cast<char*>(buffer);
+  size_t start = 0;
+  size_t read_bytes = 0;
+  char* line = nullptr;
+  bool read_complete = false;
+  while (true) {
+    ssize_t bytes =
+        TEMP_FAILURE_RETRY(read(fd, char_buffer + read_bytes, buffer_size - read_bytes - 1));
+    if (bytes <= 0) {
+      if (read_bytes == 0) {
+        close(fd);
+        return bytes == 0;
+      }
+      // Treat the last piece of data as the last line.
+      char_buffer[start + read_bytes] = '\n';
+      bytes = 1;
+      read_complete = true;
+    }
+    read_bytes += bytes;
+
+    while (read_bytes > 0) {
+      char* newline = reinterpret_cast<char*>(memchr(&char_buffer[start], '\n', read_bytes));
+      if (newline == nullptr) {
+        break;
+      }
+      *newline = '\0';
+      line = &char_buffer[start];
+      start = newline - char_buffer + 1;
+      read_bytes -= newline - line + 1;
+
+      // Ignore the return code, errors are okay.
+      ReadMapFileContent(line, callback);
+    }
+
+    if (read_complete) {
+      close(fd);
+      return true;
+    }
+
+    if (start == 0 && read_bytes == buffer_size - 1) {
+      // The buffer provided is too small to contain this line, give up
+      // and indicate failure.
+      close(fd);
+      return false;
+    }
+
+    // Copy any leftover data to the front  of the buffer.
+    if (start > 0) {
+      if (read_bytes > 0) {
+        memmove(char_buffer, &char_buffer[start], read_bytes);
+      }
+      start = 0;
+    }
+  }
+}
+
+} /* namespace procinfo */
+} /* namespace android */
diff --git a/libprocinfo/process_map_test.cpp b/libprocinfo/process_map_test.cpp
index 562d864..b1bdc08 100644
--- a/libprocinfo/process_map_test.cpp
+++ b/libprocinfo/process_map_test.cpp
@@ -16,9 +16,14 @@
 
 #include <procinfo/process_map.h>
 
+#include <inttypes.h>
+#include <sys/mman.h>
+
 #include <string>
+#include <vector>
 
 #include <android-base/file.h>
+#include <android-base/stringprintf.h>
 
 #include <gtest/gtest.h>
 
@@ -63,3 +68,215 @@
   ASSERT_TRUE(android::procinfo::ReadProcessMaps(getpid(), &maps));
   ASSERT_GT(maps.size(), 0u);
 }
+
+extern "C" void malloc_disable();
+extern "C" void malloc_enable();
+
+struct TestMapInfo {
+  TestMapInfo() = default;
+  TestMapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
+              const char* new_name)
+      : start(start), end(end), flags(flags), pgoff(pgoff), inode(inode) {
+    strcpy(name, new_name);
+  }
+  uint64_t start = 0;
+  uint64_t end = 0;
+  uint16_t flags = 0;
+  uint64_t pgoff = 0;
+  ino_t inode = 0;
+  char name[100] = {};
+};
+
+void VerifyReadMapFileAsyncSafe(const char* maps_data,
+                                const std::vector<TestMapInfo>& expected_info) {
+  TemporaryFile tf;
+  ASSERT_TRUE(android::base::WriteStringToFd(maps_data, tf.fd));
+
+  std::vector<TestMapInfo> saved_info(expected_info.size());
+  size_t num_maps = 0;
+
+  auto callback = [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
+                      const char* name) {
+    if (num_maps != saved_info.size()) {
+      TestMapInfo& saved = saved_info[num_maps];
+      saved.start = start;
+      saved.end = end;
+      saved.flags = flags;
+      saved.pgoff = pgoff;
+      saved.inode = inode;
+      strcpy(saved.name, name);
+    }
+    num_maps++;
+  };
+
+  std::vector<char> buffer(64 * 1024);
+
+#if defined(__BIONIC__)
+  // Any allocations will block after this call.
+  malloc_disable();
+#endif
+
+  bool parsed =
+      android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer.data(), buffer.size(), callback);
+
+#if defined(__BIONIC__)
+  malloc_enable();
+#endif
+
+  ASSERT_TRUE(parsed) << "Parsing of data failed:\n" << maps_data;
+  ASSERT_EQ(expected_info.size(), num_maps);
+  for (size_t i = 0; i < expected_info.size(); i++) {
+    const TestMapInfo& expected = expected_info[i];
+    const TestMapInfo& saved = saved_info[i];
+    EXPECT_EQ(expected.start, saved.start);
+    EXPECT_EQ(expected.end, saved.end);
+    EXPECT_EQ(expected.flags, saved.flags);
+    EXPECT_EQ(expected.pgoff, saved.pgoff);
+    EXPECT_EQ(expected.inode, saved.inode);
+    EXPECT_STREQ(expected.name, saved.name);
+  }
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_invalid) {
+  std::vector<TestMapInfo> expected_info;
+
+  VerifyReadMapFileAsyncSafe("12c00000-2ac00000", expected_info);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_single) {
+  std::vector<TestMapInfo> expected_info;
+  expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643,
+                             "/lib/fake.so");
+
+  VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so",
+                             expected_info);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_single_with_newline) {
+  std::vector<TestMapInfo> expected_info;
+  expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643,
+                             "/lib/fake.so");
+
+  VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so\n",
+                             expected_info);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_single_no_library) {
+  std::vector<TestMapInfo> expected_info;
+  expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 0xb00, 101, "");
+
+  VerifyReadMapFileAsyncSafe("a0000-c0000 rwxp 00000b00 00:05 101", expected_info);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_multiple) {
+  std::vector<TestMapInfo> expected_info;
+  expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 1, 100, "");
+  expected_info.emplace_back(0xd0000, 0xe0000, PROT_READ, 2, 101, "/lib/libsomething1.so");
+  expected_info.emplace_back(0xf0000, 0x100000, PROT_WRITE, 3, 102, "/lib/libsomething2.so");
+  expected_info.emplace_back(0x110000, 0x120000, PROT_EXEC, 4, 103, "[anon:something or another]");
+
+  std::string map_data =
+      "0a0000-0c0000 rwxp 00000001 00:05 100\n"
+      "0d0000-0e0000 r--p 00000002 00:05 101  /lib/libsomething1.so\n"
+      "0f0000-100000 -w-p 00000003 00:05 102  /lib/libsomething2.so\n"
+      "110000-120000 --xp 00000004 00:05 103  [anon:something or another]\n";
+
+  VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_multiple_reads) {
+  std::vector<TestMapInfo> expected_info;
+  std::string map_data;
+  uint64_t start = 0xa0000;
+  for (size_t i = 0; i < 10000; i++) {
+    map_data += android::base::StringPrintf("%" PRIx64 "-%" PRIx64 " r--p %zx 01:20 %zu fake.so\n",
+                                            start, start + 0x1000, i, 1000 + i);
+    expected_info.emplace_back(start, start + 0x1000, PROT_READ, i, 1000 + i, "fake.so");
+  }
+
+  VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_buffer_nullptr) {
+  size_t num_calls = 0;
+  auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };
+
+#if defined(__BIONIC__)
+  // Any allocations will block after this call.
+  malloc_disable();
+#endif
+
+  bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", nullptr, 10, callback);
+
+#if defined(__BIONIC__)
+  malloc_enable();
+#endif
+
+  ASSERT_FALSE(parsed);
+  EXPECT_EQ(0UL, num_calls);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_buffer_size_zero) {
+  size_t num_calls = 0;
+  auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };
+
+#if defined(__BIONIC__)
+  // Any allocations will block after this call.
+  malloc_disable();
+#endif
+
+  char buffer[10];
+  bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, 0, callback);
+
+#if defined(__BIONIC__)
+  malloc_enable();
+#endif
+
+  ASSERT_FALSE(parsed);
+  EXPECT_EQ(0UL, num_calls);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_no_calls) {
+  size_t num_calls = 0;
+  auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };
+
+#if defined(__BIONIC__)
+  // Any allocations will block after this call.
+  malloc_disable();
+#endif
+
+  char buffer[10];
+  bool parsed =
+      android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, sizeof(buffer), callback);
+
+#if defined(__BIONIC__)
+  malloc_enable();
+#endif
+
+  ASSERT_FALSE(parsed);
+  EXPECT_EQ(0UL, num_calls);
+}
+
+TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_could_parse) {
+  TemporaryFile tf;
+  ASSERT_TRUE(android::base::WriteStringToFd(
+      "0a0000-0c0000 rwxp 00000001 00:05 100    /fake/lib.so\n", tf.fd));
+
+  size_t num_calls = 0;
+  auto callback = [&](uint64_t, uint64_t, uint16_t, uint64_t, ino_t, const char*) { num_calls++; };
+
+#if defined(__BIONIC__)
+  // Any allocations will block after this call.
+  malloc_disable();
+#endif
+
+  char buffer[39];
+  bool parsed = android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer, sizeof(buffer), callback);
+
+#if defined(__BIONIC__)
+  malloc_enable();
+#endif
+
+  ASSERT_FALSE(parsed);
+  EXPECT_EQ(0UL, num_calls);
+}
diff --git a/libsparse/Android.bp b/libsparse/Android.bp
index 2ec4754..135904b 100644
--- a/libsparse/Android.bp
+++ b/libsparse/Android.bp
@@ -3,6 +3,7 @@
 cc_library {
     name: "libsparse",
     host_supported: true,
+    ramdisk_available: true,
     recovery_available: true,
     unique_host_soname: true,
     srcs: [
@@ -82,3 +83,15 @@
         },
     },
 }
+
+cc_fuzz {
+    name: "sparse_fuzzer",
+    host_supported: false,
+    srcs: [
+        "sparse_fuzzer.cpp",
+    ],
+    static_libs: [
+        "libsparse",
+        "liblog",
+    ],
+}
diff --git a/libsparse/output_file.cpp b/libsparse/output_file.cpp
index 5b8179f..e35cb0d 100644
--- a/libsparse/output_file.cpp
+++ b/libsparse/output_file.cpp
@@ -17,6 +17,7 @@
 #define _FILE_OFFSET_BITS 64
 #define _LARGEFILE64_SOURCE 1
 
+#include <algorithm>
 #include <fcntl.h>
 #include <inttypes.h>
 #include <limits.h>
@@ -48,13 +49,6 @@
 #define off64_t off_t
 #endif
 
-#define min(a, b)        \
-  ({                     \
-    typeof(a) _a = (a);  \
-    typeof(b) _b = (b);  \
-    (_a < _b) ? _a : _b; \
-  })
-
 #define SPARSE_HEADER_MAJOR_VER 1
 #define SPARSE_HEADER_MINOR_VER 0
 #define SPARSE_HEADER_LEN (sizeof(sparse_header_t))
@@ -231,7 +225,7 @@
   struct output_file_gz* outgz = to_output_file_gz(out);
 
   while (len > 0) {
-    ret = gzwrite(outgz->gz_fd, data, min(len, (unsigned int)INT_MAX));
+    ret = gzwrite(outgz->gz_fd, data, std::min<unsigned int>(len, (unsigned int)INT_MAX));
     if (ret == 0) {
       error("gzwrite %s", gzerror(outgz->gz_fd, nullptr));
       return -1;
@@ -268,7 +262,7 @@
   int ret;
 
   while (off > 0) {
-    to_write = min(off, (int64_t)INT_MAX);
+    to_write = std::min(off, (int64_t)INT_MAX);
     ret = outc->write(outc->priv, nullptr, to_write);
     if (ret < 0) {
       return ret;
@@ -470,7 +464,7 @@
   }
 
   while (len) {
-    write_len = min(len, out->block_size);
+    write_len = std::min(len, out->block_size);
     ret = out->ops->write(out, out->fill_buf, write_len);
     if (ret < 0) {
       return ret;
@@ -499,6 +493,10 @@
 
 void output_file_close(struct output_file* out) {
   out->sparse_ops->write_end_chunk(out);
+  free(out->zero_buf);
+  free(out->fill_buf);
+  out->zero_buf = nullptr;
+  out->fill_buf = nullptr;
   out->ops->close(out);
 }
 
diff --git a/libsparse/sparse.cpp b/libsparse/sparse.cpp
index cb288c5..8622b4c 100644
--- a/libsparse/sparse.cpp
+++ b/libsparse/sparse.cpp
@@ -136,11 +136,23 @@
   return 0;
 }
 
+/*
+ * This is a workaround for 32-bit Windows: Limit the block size to 64 MB before
+ * fastboot executable binary for windows 64-bit is released (b/156057250).
+ */
+#define MAX_BACKED_BLOCK_SIZE ((unsigned int) (64UL << 20))
+
 int sparse_file_write(struct sparse_file* s, int fd, bool gz, bool sparse, bool crc) {
+  struct backed_block* bb;
   int ret;
   int chunks;
   struct output_file* out;
 
+  for (bb = backed_block_iter_new(s->backed_block_list); bb; bb = backed_block_iter_next(bb)) {
+    ret = backed_block_split(s->backed_block_list, bb, MAX_BACKED_BLOCK_SIZE);
+    if (ret) return ret;
+  }
+
   chunks = sparse_count_chunks(s);
   out = output_file_open_fd(fd, s->block_size, s->len, gz, sparse, chunks, crc);
 
@@ -188,7 +200,7 @@
                               int (*write)(void* priv, const void* data, size_t len,
                                            unsigned int block, unsigned int nr_blocks),
                               void* priv) {
-  int ret;
+  int ret = 0;
   int chunks;
   struct chunk_data chk;
   struct output_file* out;
diff --git a/libsparse/sparse_fuzzer.cpp b/libsparse/sparse_fuzzer.cpp
new file mode 100644
index 0000000..42f331f
--- /dev/null
+++ b/libsparse/sparse_fuzzer.cpp
@@ -0,0 +1,16 @@
+#include "include/sparse/sparse.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  if (size < 2 * sizeof(wchar_t)) return 0;
+
+  int64_t blocksize = 4096;
+  struct sparse_file* file = sparse_file_new(size, blocksize);
+  if (!file) {
+    return 0;
+  }
+
+  unsigned int block = 1;
+  sparse_file_add_data(file, &data, size, block);
+  sparse_file_destroy(file);
+  return 0;
+}
diff --git a/libstats/Android.bp b/libstats/Android.bp
deleted file mode 100644
index f5ee1da..0000000
--- a/libstats/Android.bp
+++ /dev/null
@@ -1,39 +0,0 @@
-//
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-// ==========================================================
-// Native library to write stats log to statsd socket
-// ==========================================================
-cc_library {
-    name: "libstatssocket",
-    srcs: [
-        "stats_event_list.c",
-        "statsd_writer.c",
-    ],
-    host_supported: true,
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-DLIBLOG_LOG_TAG=1006",
-        "-DWRITE_TO_STATSD=1",
-        "-DWRITE_TO_LOGD=0",
-    ],
-    export_include_dirs: ["include"],
-    shared_libs: [
-        "libcutils",
-        "liblog",
-    ],
-}
diff --git a/libstats/OWNERS b/libstats/OWNERS
index ed06fbc..7855774 100644
--- a/libstats/OWNERS
+++ b/libstats/OWNERS
@@ -1,4 +1,7 @@
-bookatz@google.com
 joeo@google.com
+muhammadq@google.com
+ruchirr@google.com
+singhtejinder@google.com
+tsaichristine@google.com
 yaochen@google.com
-yanglu@google.com
+yro@google.com
diff --git a/libstats/include/stats_event_list.h b/libstats/include/stats_event_list.h
deleted file mode 100644
index 845a197..0000000
--- a/libstats/include/stats_event_list.h
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * Copyright (C) 2018, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_STATS_LOG_STATS_EVENT_LIST_H
-#define ANDROID_STATS_LOG_STATS_EVENT_LIST_H
-
-#include <log/log_event_list.h>
-#include <sys/uio.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-void reset_log_context(android_log_context ctx);
-int write_to_logger(android_log_context context, log_id_t id);
-void note_log_drop(int error, int atom_tag);
-void stats_log_close();
-int android_log_write_char_array(android_log_context ctx, const char* value, size_t len);
-extern int (*write_to_statsd)(struct iovec* vec, size_t nr);
-
-#ifdef __cplusplus
-}
-#endif
-
-#ifdef __cplusplus
-/**
- * A copy of android_log_event_list class.
- *
- * android_log_event_list is going to be deprecated soon, so copy it here to
- * avoid creating dependency on upstream code. TODO(b/78304629): Rewrite this
- * code.
- */
-class stats_event_list {
-  private:
-    android_log_context ctx;
-    int ret;
-
-    stats_event_list(const stats_event_list&) = delete;
-    void operator=(const stats_event_list&) = delete;
-
-  public:
-    explicit stats_event_list(int tag) : ret(0) {
-        ctx = create_android_logger(static_cast<uint32_t>(tag));
-    }
-    ~stats_event_list() { android_log_destroy(&ctx); }
-
-    int close() {
-        int retval = android_log_destroy(&ctx);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return retval;
-    }
-
-    /* To allow above C calls to use this class as parameter */
-    operator android_log_context() const { return ctx; }
-
-    /* return errors or transmit status */
-    int status() const { return ret; }
-
-    int begin() {
-        int retval = android_log_write_list_begin(ctx);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret;
-    }
-    int end() {
-        int retval = android_log_write_list_end(ctx);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret;
-    }
-
-    stats_event_list& operator<<(int32_t value) {
-        int retval = android_log_write_int32(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-    stats_event_list& operator<<(uint32_t value) {
-        int retval = android_log_write_int32(ctx, static_cast<int32_t>(value));
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-    stats_event_list& operator<<(bool value) {
-        int retval = android_log_write_int32(ctx, value ? 1 : 0);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-    stats_event_list& operator<<(int64_t value) {
-        int retval = android_log_write_int64(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-    stats_event_list& operator<<(uint64_t value) {
-        int retval = android_log_write_int64(ctx, static_cast<int64_t>(value));
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-    stats_event_list& operator<<(const char* value) {
-        int retval = android_log_write_string8(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-#if defined(_USING_LIBCXX)
-    stats_event_list& operator<<(const std::string& value) {
-        int retval = android_log_write_string8_len(ctx, value.data(), value.length());
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-#endif
-
-    stats_event_list& operator<<(float value) {
-        int retval = android_log_write_float32(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return *this;
-    }
-
-    int write(log_id_t id = LOG_ID_EVENTS) {
-        /* facilitate -EBUSY retry */
-        if ((ret == -EBUSY) || (ret > 0)) {
-            ret = 0;
-        }
-        int retval = write_to_logger(ctx, id);
-        /* existing errors trump transmission errors */
-        if (!ret) {
-            ret = retval;
-        }
-        return ret;
-    }
-
-    /*
-     * Append<Type> methods removes any integer promotion
-     * confusion, and adds access to string with length.
-     * Append methods are also added for all types for
-     * convenience.
-     */
-
-    bool AppendInt(int32_t value) {
-        int retval = android_log_write_int32(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-
-    bool AppendLong(int64_t value) {
-        int retval = android_log_write_int64(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-
-    bool AppendString(const char* value) {
-        int retval = android_log_write_string8(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-
-    bool AppendString(const char* value, size_t len) {
-        int retval = android_log_write_string8_len(ctx, value, len);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-
-#if defined(_USING_LIBCXX)
-    bool AppendString(const std::string& value) {
-        int retval = android_log_write_string8_len(ctx, value.data(), value.length());
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret;
-    }
-
-    bool Append(const std::string& value) {
-        int retval = android_log_write_string8_len(ctx, value.data(), value.length());
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret;
-    }
-#endif
-
-    bool AppendFloat(float value) {
-        int retval = android_log_write_float32(ctx, value);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-
-    template <typename Tvalue>
-    bool Append(Tvalue value) {
-        *this << value;
-        return ret >= 0;
-    }
-
-    bool Append(const char* value, size_t len) {
-        int retval = android_log_write_string8_len(ctx, value, len);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-
-    bool AppendCharArray(const char* value, size_t len) {
-        int retval = android_log_write_char_array(ctx, value, len);
-        if (retval < 0) {
-            ret = retval;
-        }
-        return ret >= 0;
-    }
-};
-
-#endif
-#endif  // ANDROID_STATS_LOG_STATS_EVENT_LIST_H
diff --git a/libstats/pull/Android.bp b/libstats/pull/Android.bp
new file mode 100644
index 0000000..a8b4a4f
--- /dev/null
+++ b/libstats/pull/Android.bp
@@ -0,0 +1,110 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// ==========================================================
+// Native library to register a pull atom callback with statsd
+// ==========================================================
+cc_defaults {
+    name: "libstatspull_defaults",
+    srcs: [
+        "stats_pull_atom_callback.cpp",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    export_include_dirs: ["include"],
+    shared_libs: [
+        "libbinder_ndk",
+        "liblog",
+        "libstatssocket",
+    ],
+    static_libs: [
+        "libutils",
+        "statsd-aidl-ndk_platform",
+    ],
+}
+cc_library_shared {
+    name: "libstatspull",
+    defaults: [
+        "libstatspull_defaults"
+    ],
+    // enumerate stable entry points for APEX use
+    stubs: {
+        symbol_file: "libstatspull.map.txt",
+        versions: [
+            "30",
+        ],
+    },
+    apex_available: [
+        "com.android.os.statsd",
+        "test_com.android.os.statsd",
+    ],
+
+    stl: "libc++_static",
+
+    // TODO(b/151102177): Enable it when the build error is fixed.
+    header_abi_checker: {
+        enabled: false,
+    },
+}
+
+// ONLY USE IN TESTS.
+cc_library_static {
+    name: "libstatspull_private",
+    defaults: [
+        "libstatspull_defaults",
+    ],
+    visibility: [
+        "//frameworks/base/apex/statsd/tests/libstatspull",
+    ],
+}
+
+// Note: These unit tests only test PullAtomMetadata.
+// For full E2E tests of libstatspull, use LibStatsPullTests
+cc_test {
+    name: "libstatspull_test",
+    srcs: [
+        "tests/pull_atom_metadata_test.cpp",
+    ],
+    shared_libs: [
+        "libstatspull",
+        "libstatssocket",
+    ],
+    test_suites: ["general-tests", "mts"],
+    test_config: "libstatspull_test.xml",
+
+    //TODO(b/153588990): Remove when the build system properly separates 
+    //32bit and 64bit architectures.
+    compile_multilib: "both",
+    multilib: {
+        lib64: {
+            suffix: "64",
+        },
+        lib32: {
+            suffix: "32",
+        },
+    },
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-missing-field-initializers",
+        "-Wno-unused-variable",
+        "-Wno-unused-function",
+        "-Wno-unused-parameter",
+    ],
+    require_root: true,
+}
diff --git a/libstats/pull/OWNERS b/libstats/pull/OWNERS
new file mode 100644
index 0000000..7855774
--- /dev/null
+++ b/libstats/pull/OWNERS
@@ -0,0 +1,7 @@
+joeo@google.com
+muhammadq@google.com
+ruchirr@google.com
+singhtejinder@google.com
+tsaichristine@google.com
+yaochen@google.com
+yro@google.com
diff --git a/libstats/pull/TEST_MAPPING b/libstats/pull/TEST_MAPPING
new file mode 100644
index 0000000..76f4f02
--- /dev/null
+++ b/libstats/pull/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit" : [
+    {
+      "name" : "libstatspull_test"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/libstats/pull/include/stats_pull_atom_callback.h b/libstats/pull/include/stats_pull_atom_callback.h
new file mode 100644
index 0000000..17df584
--- /dev/null
+++ b/libstats/pull/include/stats_pull_atom_callback.h
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <stats_event.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Opaque struct representing the metadata for registering an AStatsManager_PullAtomCallback.
+ */
+struct AStatsManager_PullAtomMetadata;
+typedef struct AStatsManager_PullAtomMetadata AStatsManager_PullAtomMetadata;
+
+/**
+ * Allocate and initialize new PullAtomMetadata.
+ *
+ * Must call AStatsManager_PullAtomMetadata_release to free the memory.
+ */
+AStatsManager_PullAtomMetadata* AStatsManager_PullAtomMetadata_obtain();
+
+/**
+ * Frees the memory held by this PullAtomMetadata
+ *
+ * After calling this, the PullAtomMetadata must not be used or modified in any way.
+ */
+void AStatsManager_PullAtomMetadata_release(AStatsManager_PullAtomMetadata* metadata);
+
+/**
+ * Set the cool down time of the pull in milliseconds. If two successive pulls are issued
+ * within the cool down, a cached version of the first will be used for the second. The minimum
+ * allowed cool down is one second.
+ */
+void AStatsManager_PullAtomMetadata_setCoolDownMillis(AStatsManager_PullAtomMetadata* metadata,
+                                                      int64_t cool_down_millis);
+
+/**
+ * Get the cool down time of the pull in milliseconds.
+ */
+int64_t AStatsManager_PullAtomMetadata_getCoolDownMillis(AStatsManager_PullAtomMetadata* metadata);
+
+/**
+ * Set the maximum time the pull can take in milliseconds.
+ * The maximum allowed timeout is 10 seconds.
+ */
+void AStatsManager_PullAtomMetadata_setTimeoutMillis(AStatsManager_PullAtomMetadata* metadata,
+                                                     int64_t timeout_millis);
+
+/**
+ * Get the maximum time the pull can take in milliseconds.
+ */
+int64_t AStatsManager_PullAtomMetadata_getTimeoutMillis(AStatsManager_PullAtomMetadata* metadata);
+
+/**
+ * Set the additive fields of this pulled atom.
+ *
+ * This is only applicable for atoms which have a uid field. When tasks are run in
+ * isolated processes, the data will be attributed to the host uid. Additive fields
+ * will be combined when the non-additive fields are the same.
+ */
+void AStatsManager_PullAtomMetadata_setAdditiveFields(AStatsManager_PullAtomMetadata* metadata,
+                                                      int32_t* additive_fields, int32_t num_fields);
+
+/**
+ * Get the number of additive fields for this pulled atom. This is intended to be called before
+ * AStatsManager_PullAtomMetadata_getAdditiveFields to determine the size of the array.
+ */
+int32_t AStatsManager_PullAtomMetadata_getNumAdditiveFields(
+        AStatsManager_PullAtomMetadata* metadata);
+
+/**
+ * Get the additive fields of this pulled atom.
+ *
+ * \param fields an output parameter containing the additive fields for this PullAtomMetadata.
+ *               Fields is an array and it is assumed that it is at least as large as the number of
+ *               additive fields, which can be obtained by calling
+ *               AStatsManager_PullAtomMetadata_getNumAdditiveFields.
+ */
+void AStatsManager_PullAtomMetadata_getAdditiveFields(AStatsManager_PullAtomMetadata* metadata,
+                                                      int32_t* fields);
+
+/**
+ * Return codes for the result of a pull.
+ */
+typedef int32_t AStatsManager_PullAtomCallbackReturn;
+enum {
+    // Value indicating that this pull was successful and that the result should be used.
+    AStatsManager_PULL_SUCCESS = 0,
+    // Value indicating that this pull was unsuccessful and that the result should not be used.
+    AStatsManager_PULL_SKIP = 1,
+};
+
+/**
+ * Opaque struct representing a list of AStatsEvent objects.
+ */
+struct AStatsEventList;
+typedef struct AStatsEventList AStatsEventList;
+
+/**
+ * Appends and returns an AStatsEvent to the end of the AStatsEventList.
+ *
+ * If an AStatsEvent is obtained in this manner, the memory is internally managed and
+ * AStatsEvent_release does not need to be called. The lifetime of the AStatsEvent is that of the
+ * AStatsEventList.
+ *
+ * The AStatsEvent does still need to be built by calling AStatsEvent_build.
+ */
+AStatsEvent* AStatsEventList_addStatsEvent(AStatsEventList* pull_data);
+
+/**
+ * Callback interface for pulling atoms requested by the stats service.
+ *
+ * \param atom_tag the tag of the atom to pull.
+ * \param data an output parameter in which the caller should fill the results of the pull. This
+ *             param cannot be NULL and it's lifetime is as long as the execution of the callback.
+ *             It must not be accessed or modified after returning from the callback.
+ * \param cookie the opaque pointer passed in AStatsManager_registerPullAtomCallback.
+ * \return AStatsManager_PULL_SUCCESS if the pull was successful, or AStatsManager_PULL_SKIP if not.
+ */
+typedef AStatsManager_PullAtomCallbackReturn (*AStatsManager_PullAtomCallback)(
+        int32_t atom_tag, AStatsEventList* data, void* cookie);
+/**
+ * Sets a callback for an atom when that atom is to be pulled. The stats service will
+ * invoke the callback when the stats service determines that this atom needs to be
+ * pulled.
+ *
+ * Requires the REGISTER_STATS_PULL_ATOM permission.
+ *
+ * \param atom_tag          The tag of the atom for this pull atom callback.
+ * \param metadata          Optional metadata specifying the timeout, cool down time, and
+ *                          additive fields for mapping isolated to host uids.
+ *                          This param is nullable, in which case defaults will be used.
+ * \param callback          The callback to be invoked when the stats service pulls the atom.
+ * \param cookie            A pointer that will be passed back to the callback.
+ *                          It has no meaning to statsd.
+ */
+void AStatsManager_setPullAtomCallback(int32_t atom_tag, AStatsManager_PullAtomMetadata* metadata,
+                                       AStatsManager_PullAtomCallback callback, void* cookie);
+
+/**
+ * Clears a callback for an atom when that atom is to be pulled. Note that any ongoing
+ * pulls will still occur.
+ *
+ * Requires the REGISTER_STATS_PULL_ATOM permission.
+ *
+ * \param atomTag           The tag of the atom of which to unregister
+ */
+void AStatsManager_clearPullAtomCallback(int32_t atom_tag);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/libstats/pull/libstatspull.map.txt b/libstats/pull/libstatspull.map.txt
new file mode 100644
index 0000000..e0e851a
--- /dev/null
+++ b/libstats/pull/libstatspull.map.txt
@@ -0,0 +1,17 @@
+LIBSTATSPULL {
+    global:
+        AStatsManager_PullAtomMetadata_obtain; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_release; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_setCoolDownMillis; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_getCoolDownMillis; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_setTimeoutMillis; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_getTimeoutMillis; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_setAdditiveFields; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_getNumAdditiveFields; # apex # introduced=30
+        AStatsManager_PullAtomMetadata_getAdditiveFields; # apex # introduced=30
+        AStatsEventList_addStatsEvent; # apex # introduced=30
+        AStatsManager_setPullAtomCallback; # apex # introduced=30
+        AStatsManager_clearPullAtomCallback; # apex # introduced=30
+    local:
+        *;
+};
diff --git a/libstats/pull/libstatspull_test.xml b/libstats/pull/libstatspull_test.xml
new file mode 100644
index 0000000..233fc1f
--- /dev/null
+++ b/libstats/pull/libstatspull_test.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Runs libstatspull_test.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-native" />
+    <option name="test-suite-tag" value="mts" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer"/>
+
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+       <option name="cleanup" value="true" />
+       <option name="push" value="libstatspull_test->/data/local/tmp/libstatspull_test" />
+       <option name="append-bitness" value="true" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="libstatspull_test" />
+    </test>
+
+    <object type="module_controller" class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
+        <option name="mainline-module-package-name" value="com.google.android.os.statsd" />
+    </object>
+</configuration>
diff --git a/libstats/pull/stats_pull_atom_callback.cpp b/libstats/pull/stats_pull_atom_callback.cpp
new file mode 100644
index 0000000..478cae7
--- /dev/null
+++ b/libstats/pull/stats_pull_atom_callback.cpp
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <map>
+#include <thread>
+#include <vector>
+
+#include <stats_event.h>
+#include <stats_pull_atom_callback.h>
+
+#include <aidl/android/os/BnPullAtomCallback.h>
+#include <aidl/android/os/IPullAtomResultReceiver.h>
+#include <aidl/android/os/IStatsd.h>
+#include <aidl/android/util/StatsEventParcel.h>
+#include <android/binder_auto_utils.h>
+#include <android/binder_ibinder.h>
+#include <android/binder_manager.h>
+
+using Status = ::ndk::ScopedAStatus;
+using aidl::android::os::BnPullAtomCallback;
+using aidl::android::os::IPullAtomResultReceiver;
+using aidl::android::os::IStatsd;
+using aidl::android::util::StatsEventParcel;
+using ::ndk::SharedRefBase;
+
+struct AStatsEventList {
+    std::vector<AStatsEvent*> data;
+};
+
+AStatsEvent* AStatsEventList_addStatsEvent(AStatsEventList* pull_data) {
+    AStatsEvent* event = AStatsEvent_obtain();
+    pull_data->data.push_back(event);
+    return event;
+}
+
+static const int64_t DEFAULT_COOL_DOWN_MILLIS = 1000LL;  // 1 second.
+static const int64_t DEFAULT_TIMEOUT_MILLIS = 2000LL;    // 2 seconds.
+
+struct AStatsManager_PullAtomMetadata {
+    int64_t cool_down_millis;
+    int64_t timeout_millis;
+    std::vector<int32_t> additive_fields;
+};
+
+AStatsManager_PullAtomMetadata* AStatsManager_PullAtomMetadata_obtain() {
+    AStatsManager_PullAtomMetadata* metadata = new AStatsManager_PullAtomMetadata();
+    metadata->cool_down_millis = DEFAULT_COOL_DOWN_MILLIS;
+    metadata->timeout_millis = DEFAULT_TIMEOUT_MILLIS;
+    metadata->additive_fields = std::vector<int32_t>();
+    return metadata;
+}
+
+void AStatsManager_PullAtomMetadata_release(AStatsManager_PullAtomMetadata* metadata) {
+    delete metadata;
+}
+
+void AStatsManager_PullAtomMetadata_setCoolDownMillis(AStatsManager_PullAtomMetadata* metadata,
+                                                      int64_t cool_down_millis) {
+    metadata->cool_down_millis = cool_down_millis;
+}
+
+int64_t AStatsManager_PullAtomMetadata_getCoolDownMillis(AStatsManager_PullAtomMetadata* metadata) {
+    return metadata->cool_down_millis;
+}
+
+void AStatsManager_PullAtomMetadata_setTimeoutMillis(AStatsManager_PullAtomMetadata* metadata,
+                                                     int64_t timeout_millis) {
+    metadata->timeout_millis = timeout_millis;
+}
+
+int64_t AStatsManager_PullAtomMetadata_getTimeoutMillis(AStatsManager_PullAtomMetadata* metadata) {
+    return metadata->timeout_millis;
+}
+
+void AStatsManager_PullAtomMetadata_setAdditiveFields(AStatsManager_PullAtomMetadata* metadata,
+                                                      int32_t* additive_fields,
+                                                      int32_t num_fields) {
+    metadata->additive_fields.assign(additive_fields, additive_fields + num_fields);
+}
+
+int32_t AStatsManager_PullAtomMetadata_getNumAdditiveFields(
+        AStatsManager_PullAtomMetadata* metadata) {
+    return metadata->additive_fields.size();
+}
+
+void AStatsManager_PullAtomMetadata_getAdditiveFields(AStatsManager_PullAtomMetadata* metadata,
+                                                      int32_t* fields) {
+    std::copy(metadata->additive_fields.begin(), metadata->additive_fields.end(), fields);
+}
+
+class StatsPullAtomCallbackInternal : public BnPullAtomCallback {
+  public:
+    StatsPullAtomCallbackInternal(const AStatsManager_PullAtomCallback callback, void* cookie,
+                                  const int64_t coolDownMillis, const int64_t timeoutMillis,
+                                  const std::vector<int32_t> additiveFields)
+        : mCallback(callback),
+          mCookie(cookie),
+          mCoolDownMillis(coolDownMillis),
+          mTimeoutMillis(timeoutMillis),
+          mAdditiveFields(additiveFields) {}
+
+    Status onPullAtom(int32_t atomTag,
+                      const std::shared_ptr<IPullAtomResultReceiver>& resultReceiver) override {
+        AStatsEventList statsEventList;
+        int successInt = mCallback(atomTag, &statsEventList, mCookie);
+        bool success = successInt == AStatsManager_PULL_SUCCESS;
+
+        // Convert stats_events into StatsEventParcels.
+        std::vector<StatsEventParcel> parcels;
+        for (int i = 0; i < statsEventList.data.size(); i++) {
+            size_t size;
+            uint8_t* buffer = AStatsEvent_getBuffer(statsEventList.data[i], &size);
+
+            StatsEventParcel p;
+            // vector.assign() creates a copy, but this is inevitable unless
+            // stats_event.h/c uses a vector as opposed to a buffer.
+            p.buffer.assign(buffer, buffer + size);
+            parcels.push_back(std::move(p));
+        }
+
+        Status status = resultReceiver->pullFinished(atomTag, success, parcels);
+        if (!status.isOk()) {
+            std::vector<StatsEventParcel> emptyParcels;
+            resultReceiver->pullFinished(atomTag, /*success=*/false, emptyParcels);
+        }
+        for (int i = 0; i < statsEventList.data.size(); i++) {
+            AStatsEvent_release(statsEventList.data[i]);
+        }
+        return Status::ok();
+    }
+
+    int64_t getCoolDownMillis() const { return mCoolDownMillis; }
+    int64_t getTimeoutMillis() const { return mTimeoutMillis; }
+    const std::vector<int32_t>& getAdditiveFields() const { return mAdditiveFields; }
+
+  private:
+    const AStatsManager_PullAtomCallback mCallback;
+    void* mCookie;
+    const int64_t mCoolDownMillis;
+    const int64_t mTimeoutMillis;
+    const std::vector<int32_t> mAdditiveFields;
+};
+
+static std::mutex pullAtomMutex;
+static std::shared_ptr<IStatsd> sStatsd = nullptr;
+
+static std::map<int32_t, std::shared_ptr<StatsPullAtomCallbackInternal>> mPullers;
+static std::shared_ptr<IStatsd> getStatsService();
+
+static void binderDied(void* /*cookie*/) {
+    {
+        std::lock_guard<std::mutex> lock(pullAtomMutex);
+        sStatsd = nullptr;
+    }
+
+    std::shared_ptr<IStatsd> statsService = getStatsService();
+    if (statsService == nullptr) {
+        return;
+    }
+
+    // Since we do not want to make an IPC with the lock held, we first create a
+    // copy of the data with the lock held before iterating through the map.
+    std::map<int32_t, std::shared_ptr<StatsPullAtomCallbackInternal>> pullersCopy;
+    {
+        std::lock_guard<std::mutex> lock(pullAtomMutex);
+        pullersCopy = mPullers;
+    }
+    for (const auto& it : pullersCopy) {
+        statsService->registerNativePullAtomCallback(it.first, it.second->getCoolDownMillis(),
+                                                     it.second->getTimeoutMillis(),
+                                                     it.second->getAdditiveFields(), it.second);
+    }
+}
+
+static ::ndk::ScopedAIBinder_DeathRecipient sDeathRecipient(
+        AIBinder_DeathRecipient_new(binderDied));
+
+static std::shared_ptr<IStatsd> getStatsService() {
+    std::lock_guard<std::mutex> lock(pullAtomMutex);
+    if (!sStatsd) {
+        // Fetch statsd
+        ::ndk::SpAIBinder binder(AServiceManager_getService("stats"));
+        sStatsd = IStatsd::fromBinder(binder);
+        if (sStatsd) {
+            AIBinder_linkToDeath(binder.get(), sDeathRecipient.get(), /*cookie=*/nullptr);
+        }
+    }
+    return sStatsd;
+}
+
+void registerStatsPullAtomCallbackBlocking(int32_t atomTag,
+                                           std::shared_ptr<StatsPullAtomCallbackInternal> cb) {
+    const std::shared_ptr<IStatsd> statsService = getStatsService();
+    if (statsService == nullptr) {
+        // Statsd not available
+        return;
+    }
+
+    statsService->registerNativePullAtomCallback(
+            atomTag, cb->getCoolDownMillis(), cb->getTimeoutMillis(), cb->getAdditiveFields(), cb);
+}
+
+void unregisterStatsPullAtomCallbackBlocking(int32_t atomTag) {
+    const std::shared_ptr<IStatsd> statsService = getStatsService();
+    if (statsService == nullptr) {
+        // Statsd not available
+        return;
+    }
+
+    statsService->unregisterNativePullAtomCallback(atomTag);
+}
+
+void AStatsManager_setPullAtomCallback(int32_t atom_tag, AStatsManager_PullAtomMetadata* metadata,
+                                       AStatsManager_PullAtomCallback callback, void* cookie) {
+    int64_t coolDownMillis =
+            metadata == nullptr ? DEFAULT_COOL_DOWN_MILLIS : metadata->cool_down_millis;
+    int64_t timeoutMillis = metadata == nullptr ? DEFAULT_TIMEOUT_MILLIS : metadata->timeout_millis;
+
+    std::vector<int32_t> additiveFields;
+    if (metadata != nullptr) {
+        additiveFields = metadata->additive_fields;
+    }
+
+    std::shared_ptr<StatsPullAtomCallbackInternal> callbackBinder =
+            SharedRefBase::make<StatsPullAtomCallbackInternal>(callback, cookie, coolDownMillis,
+                                                               timeoutMillis, additiveFields);
+
+    {
+        std::lock_guard<std::mutex> lg(pullAtomMutex);
+        // Always add to the map. If statsd is dead, we will add them when it comes back.
+        mPullers[atom_tag] = callbackBinder;
+    }
+
+    std::thread registerThread(registerStatsPullAtomCallbackBlocking, atom_tag, callbackBinder);
+    registerThread.detach();
+}
+
+void AStatsManager_clearPullAtomCallback(int32_t atom_tag) {
+    {
+        std::lock_guard<std::mutex> lg(pullAtomMutex);
+        // Always remove the puller from our map.
+        // If statsd is down, we will not register it when it comes back.
+        mPullers.erase(atom_tag);
+    }
+    std::thread unregisterThread(unregisterStatsPullAtomCallbackBlocking, atom_tag);
+    unregisterThread.detach();
+}
diff --git a/libstats/pull/tests/pull_atom_metadata_test.cpp b/libstats/pull/tests/pull_atom_metadata_test.cpp
new file mode 100644
index 0000000..abc8e47
--- /dev/null
+++ b/libstats/pull/tests/pull_atom_metadata_test.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <stats_pull_atom_callback.h>
+
+namespace {
+
+static const int64_t DEFAULT_COOL_DOWN_MILLIS = 1000LL;  // 1 second.
+static const int64_t DEFAULT_TIMEOUT_MILLIS = 2000LL;    // 2 seconds.
+
+}  // anonymous namespace
+
+TEST(AStatsManager_PullAtomMetadataTest, TestEmpty) {
+    AStatsManager_PullAtomMetadata* metadata = AStatsManager_PullAtomMetadata_obtain();
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getCoolDownMillis(metadata), DEFAULT_COOL_DOWN_MILLIS);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getTimeoutMillis(metadata), DEFAULT_TIMEOUT_MILLIS);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getNumAdditiveFields(metadata), 0);
+    AStatsManager_PullAtomMetadata_release(metadata);
+}
+
+TEST(AStatsManager_PullAtomMetadataTest, TestSetTimeoutMillis) {
+    int64_t timeoutMillis = 500;
+    AStatsManager_PullAtomMetadata* metadata = AStatsManager_PullAtomMetadata_obtain();
+    AStatsManager_PullAtomMetadata_setTimeoutMillis(metadata, timeoutMillis);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getCoolDownMillis(metadata), DEFAULT_COOL_DOWN_MILLIS);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getTimeoutMillis(metadata), timeoutMillis);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getNumAdditiveFields(metadata), 0);
+    AStatsManager_PullAtomMetadata_release(metadata);
+}
+
+TEST(AStatsManager_PullAtomMetadataTest, TestSetCoolDownMillis) {
+    int64_t coolDownMillis = 10000;
+    AStatsManager_PullAtomMetadata* metadata = AStatsManager_PullAtomMetadata_obtain();
+    AStatsManager_PullAtomMetadata_setCoolDownMillis(metadata, coolDownMillis);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getCoolDownMillis(metadata), coolDownMillis);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getTimeoutMillis(metadata), DEFAULT_TIMEOUT_MILLIS);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getNumAdditiveFields(metadata), 0);
+    AStatsManager_PullAtomMetadata_release(metadata);
+}
+
+TEST(AStatsManager_PullAtomMetadataTest, TestSetAdditiveFields) {
+    const int numFields = 3;
+    int inputFields[numFields] = {2, 4, 6};
+    AStatsManager_PullAtomMetadata* metadata = AStatsManager_PullAtomMetadata_obtain();
+    AStatsManager_PullAtomMetadata_setAdditiveFields(metadata, inputFields, numFields);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getCoolDownMillis(metadata), DEFAULT_COOL_DOWN_MILLIS);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getTimeoutMillis(metadata), DEFAULT_TIMEOUT_MILLIS);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getNumAdditiveFields(metadata), numFields);
+    int outputFields[numFields];
+    AStatsManager_PullAtomMetadata_getAdditiveFields(metadata, outputFields);
+    for (int i = 0; i < numFields; i++) {
+        EXPECT_EQ(inputFields[i], outputFields[i]);
+    }
+    AStatsManager_PullAtomMetadata_release(metadata);
+}
+
+TEST(AStatsManager_PullAtomMetadataTest, TestSetAllElements) {
+    int64_t timeoutMillis = 500;
+    int64_t coolDownMillis = 10000;
+    const int numFields = 3;
+    int inputFields[numFields] = {2, 4, 6};
+
+    AStatsManager_PullAtomMetadata* metadata = AStatsManager_PullAtomMetadata_obtain();
+    AStatsManager_PullAtomMetadata_setTimeoutMillis(metadata, timeoutMillis);
+    AStatsManager_PullAtomMetadata_setCoolDownMillis(metadata, coolDownMillis);
+    AStatsManager_PullAtomMetadata_setAdditiveFields(metadata, inputFields, numFields);
+
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getCoolDownMillis(metadata), coolDownMillis);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getTimeoutMillis(metadata), timeoutMillis);
+    EXPECT_EQ(AStatsManager_PullAtomMetadata_getNumAdditiveFields(metadata), numFields);
+    int outputFields[numFields];
+    AStatsManager_PullAtomMetadata_getAdditiveFields(metadata, outputFields);
+    for (int i = 0; i < numFields; i++) {
+        EXPECT_EQ(inputFields[i], outputFields[i]);
+    }
+    AStatsManager_PullAtomMetadata_release(metadata);
+}
diff --git a/libstats/push_compat/Android.bp b/libstats/push_compat/Android.bp
new file mode 100644
index 0000000..a63a5b6
--- /dev/null
+++ b/libstats/push_compat/Android.bp
@@ -0,0 +1,65 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// =========================================================================
+// Native library that toggles between the old and new statsd socket
+// protocols. This library should only be used by DNS resolver or other
+// native modules on Q that log pushed atoms to statsd.
+// =========================================================================
+cc_defaults {
+    name: "libstatspush_compat_defaults",
+    srcs: [
+        "statsd_writer.c",
+        "stats_event_list.c",
+        "StatsEventCompat.cpp"
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-DWRITE_TO_STATSD=1",
+        "-DWRITE_TO_LOGD=0",
+    ],
+    header_libs: ["libstatssocket_headers"],
+    static_libs: [
+        "libbase",
+    ],
+    shared_libs: [
+        "liblog",
+    ],
+}
+
+cc_library {
+    name: "libstatspush_compat",
+    defaults: ["libstatspush_compat_defaults"],
+    export_include_dirs: ["include"],
+    export_header_lib_headers: [
+        "libstatssocket_headers",
+    ],
+    static_libs: ["libgtest_prod"],
+    apex_available: ["com.android.resolv"],
+    min_sdk_version: "29",
+}
+
+cc_test {
+    name: "libstatspush_compat_test",
+    defaults: ["libstatspush_compat_defaults"],
+    test_suites: ["device_tests"],
+    srcs: [
+        "tests/StatsEventCompat_test.cpp",
+    ],
+    static_libs: ["libgmock"],
+}
+
diff --git a/libstats/push_compat/StatsEventCompat.cpp b/libstats/push_compat/StatsEventCompat.cpp
new file mode 100644
index 0000000..12a5dd4
--- /dev/null
+++ b/libstats/push_compat/StatsEventCompat.cpp
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "include/StatsEventCompat.h"
+
+#include <chrono>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/properties.h>
+#include <android/api-level.h>
+#include <android/log.h>
+#include <dlfcn.h>
+
+using android::base::boot_clock;
+using android::base::GetProperty;
+
+const static int kStatsEventTag = 1937006964;
+const bool StatsEventCompat::mPlatformAtLeastR =
+        android_get_device_api_level() >= __ANDROID_API_R__;
+
+// initializations of static class variables
+bool StatsEventCompat::mAttemptedLoad = false;
+std::mutex StatsEventCompat::mLoadLock;
+AStatsEventApi StatsEventCompat::mAStatsEventApi;
+
+static int64_t elapsedRealtimeNano() {
+    return std::chrono::time_point_cast<std::chrono::nanoseconds>(boot_clock::now())
+            .time_since_epoch()
+            .count();
+}
+
+StatsEventCompat::StatsEventCompat() : mEventQ(kStatsEventTag) {
+    // guard loading because StatsEventCompat might be called from multithreaded
+    // environment
+    {
+        std::lock_guard<std::mutex> lg(mLoadLock);
+        if (!mAttemptedLoad && mPlatformAtLeastR) {
+            void* handle = dlopen("libstatssocket.so", RTLD_NOW);
+            if (handle) {
+                initializeApiTableLocked(handle);
+            } else {
+                ALOGE("dlopen failed: %s\n", dlerror());
+            }
+        }
+        mAttemptedLoad = true;
+    }
+
+    if (useRSchema()) {
+        mEventR = mAStatsEventApi.obtain();
+    } else if (useQSchema()) {
+        mEventQ << elapsedRealtimeNano();
+    }
+}
+
+StatsEventCompat::~StatsEventCompat() {
+    if (useRSchema()) mAStatsEventApi.release(mEventR);
+}
+
+// Populates the AStatsEventApi struct by calling dlsym to find the address of
+// each API function.
+void StatsEventCompat::initializeApiTableLocked(void* handle) {
+    mAStatsEventApi.obtain = (AStatsEvent* (*)())dlsym(handle, "AStatsEvent_obtain");
+    mAStatsEventApi.build = (void (*)(AStatsEvent*))dlsym(handle, "AStatsEvent_build");
+    mAStatsEventApi.write = (int (*)(AStatsEvent*))dlsym(handle, "AStatsEvent_write");
+    mAStatsEventApi.release = (void (*)(AStatsEvent*))dlsym(handle, "AStatsEvent_release");
+    mAStatsEventApi.setAtomId =
+            (void (*)(AStatsEvent*, uint32_t))dlsym(handle, "AStatsEvent_setAtomId");
+    mAStatsEventApi.writeInt32 =
+            (void (*)(AStatsEvent*, int32_t))dlsym(handle, "AStatsEvent_writeInt32");
+    mAStatsEventApi.writeInt64 =
+            (void (*)(AStatsEvent*, int64_t))dlsym(handle, "AStatsEvent_writeInt64");
+    mAStatsEventApi.writeFloat =
+            (void (*)(AStatsEvent*, float))dlsym(handle, "AStatsEvent_writeFloat");
+    mAStatsEventApi.writeBool =
+            (void (*)(AStatsEvent*, bool))dlsym(handle, "AStatsEvent_writeBool");
+    mAStatsEventApi.writeByteArray = (void (*)(AStatsEvent*, const uint8_t*, size_t))dlsym(
+            handle, "AStatsEvent_writeByteArray");
+    mAStatsEventApi.writeString =
+            (void (*)(AStatsEvent*, const char*))dlsym(handle, "AStatsEvent_writeString");
+    mAStatsEventApi.writeAttributionChain =
+            (void (*)(AStatsEvent*, const uint32_t*, const char* const*, uint8_t))dlsym(
+                    handle, "AStatsEvent_writeAttributionChain");
+    mAStatsEventApi.addBoolAnnotation =
+            (void (*)(AStatsEvent*, uint8_t, bool))dlsym(handle, "AStatsEvent_addBoolAnnotation");
+    mAStatsEventApi.addInt32Annotation = (void (*)(AStatsEvent*, uint8_t, int32_t))dlsym(
+            handle, "AStatsEvent_addInt32Annotation");
+
+    mAStatsEventApi.initialized = true;
+}
+
+void StatsEventCompat::setAtomId(int32_t atomId) {
+    if (useRSchema()) {
+        mAStatsEventApi.setAtomId(mEventR, (uint32_t)atomId);
+    } else if (useQSchema()) {
+        mEventQ << atomId;
+    }
+}
+
+void StatsEventCompat::writeInt32(int32_t value) {
+    if (useRSchema()) {
+        mAStatsEventApi.writeInt32(mEventR, value);
+    } else if (useQSchema()) {
+        mEventQ << value;
+    }
+}
+
+void StatsEventCompat::writeInt64(int64_t value) {
+    if (useRSchema()) {
+        mAStatsEventApi.writeInt64(mEventR, value);
+    } else if (useQSchema()) {
+        mEventQ << value;
+    }
+}
+
+void StatsEventCompat::writeFloat(float value) {
+    if (useRSchema()) {
+        mAStatsEventApi.writeFloat(mEventR, value);
+    } else if (useQSchema()) {
+        mEventQ << value;
+    }
+}
+
+void StatsEventCompat::writeBool(bool value) {
+    if (useRSchema()) {
+        mAStatsEventApi.writeBool(mEventR, value);
+    } else if (useQSchema()) {
+        mEventQ << value;
+    }
+}
+
+void StatsEventCompat::writeByteArray(const char* buffer, size_t length) {
+    if (useRSchema()) {
+        mAStatsEventApi.writeByteArray(mEventR, reinterpret_cast<const uint8_t*>(buffer), length);
+    } else if (useQSchema()) {
+        mEventQ.AppendCharArray(buffer, length);
+    }
+}
+
+void StatsEventCompat::writeString(const char* value) {
+    if (value == nullptr) value = "";
+
+    if (useRSchema()) {
+        mAStatsEventApi.writeString(mEventR, value);
+    } else if (useQSchema()) {
+        mEventQ << value;
+    }
+}
+
+void StatsEventCompat::writeAttributionChain(const int32_t* uids, size_t numUids,
+                                             const vector<const char*>& tags) {
+    if (useRSchema()) {
+        mAStatsEventApi.writeAttributionChain(mEventR, (const uint32_t*)uids, tags.data(),
+                                              (uint8_t)numUids);
+    } else if (useQSchema()) {
+        mEventQ.begin();
+        for (size_t i = 0; i < numUids; i++) {
+            mEventQ.begin();
+            mEventQ << uids[i];
+            const char* tag = tags[i] ? tags[i] : "";
+            mEventQ << tag;
+            mEventQ.end();
+        }
+        mEventQ.end();
+    }
+}
+
+void StatsEventCompat::writeKeyValuePairs(const map<int, int32_t>& int32Map,
+                                          const map<int, int64_t>& int64Map,
+                                          const map<int, const char*>& stringMap,
+                                          const map<int, float>& floatMap) {
+    // AStatsEvent does not support key value pairs.
+    if (useQSchema()) {
+        mEventQ.begin();
+        writeKeyValuePairMap(int32Map);
+        writeKeyValuePairMap(int64Map);
+        writeKeyValuePairMap(stringMap);
+        writeKeyValuePairMap(floatMap);
+        mEventQ.end();
+    }
+}
+
+template <class T>
+void StatsEventCompat::writeKeyValuePairMap(const map<int, T>& keyValuePairMap) {
+    for (const auto& it : keyValuePairMap) {
+        mEventQ.begin();
+        mEventQ << it.first;
+        mEventQ << it.second;
+        mEventQ.end();
+    }
+}
+
+// explicitly specify which types we're going to use
+template void StatsEventCompat::writeKeyValuePairMap<int32_t>(const map<int, int32_t>&);
+template void StatsEventCompat::writeKeyValuePairMap<int64_t>(const map<int, int64_t>&);
+template void StatsEventCompat::writeKeyValuePairMap<float>(const map<int, float>&);
+template void StatsEventCompat::writeKeyValuePairMap<const char*>(const map<int, const char*>&);
+
+void StatsEventCompat::addBoolAnnotation(uint8_t annotationId, bool value) {
+    if (useRSchema()) {
+        mAStatsEventApi.addBoolAnnotation(mEventR, annotationId, value);
+    }
+    // Don't do anything if on Q.
+}
+
+void StatsEventCompat::addInt32Annotation(uint8_t annotationId, int32_t value) {
+    if (useRSchema()) {
+        mAStatsEventApi.addInt32Annotation(mEventR, annotationId, value);
+    }
+    // Don't do anything if on Q.
+}
+
+int StatsEventCompat::writeToSocket() {
+    if (useRSchema()) {
+        return mAStatsEventApi.write(mEventR);
+    }
+
+    if (useQSchema()) return mEventQ.write(LOG_ID_STATS);
+
+    // We reach here only if we're on R, but libstatssocket was unable to
+    // be loaded using dlopen.
+    return -ENOLINK;
+}
+
+bool StatsEventCompat::useRSchema() {
+    return mPlatformAtLeastR && mAStatsEventApi.initialized;
+}
+
+bool StatsEventCompat::useQSchema() {
+    return !mPlatformAtLeastR;
+}
diff --git a/libstats/push_compat/include/StatsEventCompat.h b/libstats/push_compat/include/StatsEventCompat.h
new file mode 100644
index 0000000..00bf48b
--- /dev/null
+++ b/libstats/push_compat/include/StatsEventCompat.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gtest/gtest_prod.h>
+#include <map>
+#include <mutex>
+#include <vector>
+#include "stats_event.h"
+#include "stats_event_list.h"
+
+using std::map;
+using std::vector;
+
+struct AStatsEventApi {
+    // Indicates whether the below function pointers have been set using dlsym.
+    bool initialized = false;
+
+    AStatsEvent* (*obtain)(void);
+    void (*build)(AStatsEvent*);
+    int (*write)(AStatsEvent*);
+    void (*release)(AStatsEvent*);
+    void (*setAtomId)(AStatsEvent*, uint32_t);
+    void (*writeInt32)(AStatsEvent*, int32_t);
+    void (*writeInt64)(AStatsEvent*, int64_t);
+    void (*writeFloat)(AStatsEvent*, float);
+    void (*writeBool)(AStatsEvent*, bool);
+    void (*writeByteArray)(AStatsEvent*, const uint8_t*, size_t);
+    void (*writeString)(AStatsEvent*, const char*);
+    void (*writeAttributionChain)(AStatsEvent*, const uint32_t*, const char* const*, uint8_t);
+    void (*addBoolAnnotation)(AStatsEvent*, uint8_t, bool);
+    void (*addInt32Annotation)(AStatsEvent*, uint8_t, int32_t);
+};
+
+class StatsEventCompat {
+  public:
+    StatsEventCompat();
+    ~StatsEventCompat();
+
+    void setAtomId(int32_t atomId);
+    void writeInt32(int32_t value);
+    void writeInt64(int64_t value);
+    void writeFloat(float value);
+    void writeBool(bool value);
+    void writeByteArray(const char* buffer, size_t length);
+    void writeString(const char* value);
+
+    // Pre-condition: numUids == tags.size()
+    void writeAttributionChain(const int32_t* uids, size_t numUids,
+                               const vector<const char*>& tags);
+
+    void writeKeyValuePairs(const map<int, int32_t>& int32Map, const map<int, int64_t>& int64Map,
+                            const map<int, const char*>& stringMap,
+                            const map<int, float>& floatMap);
+
+    void addBoolAnnotation(uint8_t annotationId, bool value);
+    void addInt32Annotation(uint8_t annotationId, int32_t value);
+
+    int writeToSocket();
+
+  private:
+    // static member variables
+    const static bool mPlatformAtLeastR;
+    static bool mAttemptedLoad;
+    static std::mutex mLoadLock;
+    static AStatsEventApi mAStatsEventApi;
+
+    // non-static member variables
+    AStatsEvent* mEventR = nullptr;
+    stats_event_list mEventQ;
+
+    template <class T>
+    void writeKeyValuePairMap(const map<int, T>& keyValuePairMap);
+
+    void initializeApiTableLocked(void* handle);
+    bool useRSchema();
+    bool useQSchema();
+
+    FRIEND_TEST(StatsEventCompatTest, TestDynamicLoading);
+};
diff --git a/libstats/push_compat/include/stats_event_list.h b/libstats/push_compat/include/stats_event_list.h
new file mode 100644
index 0000000..b7ada0c
--- /dev/null
+++ b/libstats/push_compat/include/stats_event_list.h
@@ -0,0 +1,250 @@
+/*
+ * Copyright (C) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <log/log_event_list.h>
+#include <sys/uio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void reset_log_context(android_log_context ctx);
+int write_to_logger(android_log_context context, log_id_t id);
+void note_log_drop(int error, int atom_tag);
+void stats_log_close();
+int android_log_write_char_array(android_log_context ctx, const char* value, size_t len);
+extern int (*write_to_statsd)(struct iovec* vec, size_t nr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef __cplusplus
+/**
+ * A copy of android_log_event_list class.
+ *
+ * android_log_event_list is going to be deprecated soon, so copy it here to
+ * avoid creating dependency on upstream code. TODO(b/78304629): Rewrite this
+ * code.
+ */
+class stats_event_list {
+  private:
+    android_log_context ctx;
+    int ret;
+
+    stats_event_list(const stats_event_list&) = delete;
+    void operator=(const stats_event_list&) = delete;
+
+  public:
+    explicit stats_event_list(int tag) : ret(0) {
+        ctx = create_android_logger(static_cast<uint32_t>(tag));
+    }
+    ~stats_event_list() { android_log_destroy(&ctx); }
+
+    int close() {
+        int retval = android_log_destroy(&ctx);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return retval;
+    }
+
+    /* To allow above C calls to use this class as parameter */
+    operator android_log_context() const { return ctx; }
+
+    /* return errors or transmit status */
+    int status() const { return ret; }
+
+    int begin() {
+        int retval = android_log_write_list_begin(ctx);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret;
+    }
+    int end() {
+        int retval = android_log_write_list_end(ctx);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret;
+    }
+
+    stats_event_list& operator<<(int32_t value) {
+        int retval = android_log_write_int32(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(uint32_t value) {
+        int retval = android_log_write_int32(ctx, static_cast<int32_t>(value));
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(bool value) {
+        int retval = android_log_write_int32(ctx, value ? 1 : 0);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(int64_t value) {
+        int retval = android_log_write_int64(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(uint64_t value) {
+        int retval = android_log_write_int64(ctx, static_cast<int64_t>(value));
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(const char* value) {
+        int retval = android_log_write_string8(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(const std::string& value) {
+        int retval = android_log_write_string8_len(ctx, value.data(), value.length());
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    stats_event_list& operator<<(float value) {
+        int retval = android_log_write_float32(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return *this;
+    }
+
+    int write(log_id_t id = LOG_ID_EVENTS) {
+        /* facilitate -EBUSY retry */
+        if ((ret == -EBUSY) || (ret > 0)) {
+            ret = 0;
+        }
+        int retval = write_to_logger(ctx, id);
+        /* existing errors trump transmission errors */
+        if (!ret) {
+            ret = retval;
+        }
+        return ret;
+    }
+
+    /*
+     * Append<Type> methods removes any integer promotion
+     * confusion, and adds access to string with length.
+     * Append methods are also added for all types for
+     * convenience.
+     */
+
+    bool AppendInt(int32_t value) {
+        int retval = android_log_write_int32(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+
+    bool AppendLong(int64_t value) {
+        int retval = android_log_write_int64(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+
+    bool AppendString(const char* value) {
+        int retval = android_log_write_string8(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+
+    bool AppendString(const char* value, size_t len) {
+        int retval = android_log_write_string8_len(ctx, value, len);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+
+    bool AppendString(const std::string& value) {
+        int retval = android_log_write_string8_len(ctx, value.data(), value.length());
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret;
+    }
+
+    bool Append(const std::string& value) {
+        int retval = android_log_write_string8_len(ctx, value.data(), value.length());
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret;
+    }
+
+    bool AppendFloat(float value) {
+        int retval = android_log_write_float32(ctx, value);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+
+    template <typename Tvalue>
+    bool Append(Tvalue value) {
+        *this << value;
+        return ret >= 0;
+    }
+
+    bool Append(const char* value, size_t len) {
+        int retval = android_log_write_string8_len(ctx, value, len);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+
+    bool AppendCharArray(const char* value, size_t len) {
+        int retval = android_log_write_char_array(ctx, value, len);
+        if (retval < 0) {
+            ret = retval;
+        }
+        return ret >= 0;
+    }
+};
+
+#endif
diff --git a/libstats/stats_event_list.c b/libstats/push_compat/stats_event_list.c
similarity index 100%
rename from libstats/stats_event_list.c
rename to libstats/push_compat/stats_event_list.c
diff --git a/libstats/push_compat/statsd_writer.c b/libstats/push_compat/statsd_writer.c
new file mode 100644
index 0000000..04d3b46
--- /dev/null
+++ b/libstats/push_compat/statsd_writer.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright (C) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "statsd_writer.h"
+
+#include <cutils/fs.h>
+#include <cutils/sockets.h>
+#include <cutils/threads.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <poll.h>
+#include <private/android_filesystem_config.h>
+#include <private/android_logger.h>
+#include <stdarg.h>
+#include <stdatomic.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <time.h>
+#include <unistd.h>
+
+static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
+static atomic_int dropped = 0;
+static atomic_int log_error = 0;
+static atomic_int atom_tag = 0;
+
+void statsd_writer_init_lock() {
+    /*
+     * If we trigger a signal handler in the middle of locked activity and the
+     * signal handler logs a message, we could get into a deadlock state.
+     */
+    pthread_mutex_lock(&log_init_lock);
+}
+
+int statd_writer_trylock() {
+    return pthread_mutex_trylock(&log_init_lock);
+}
+
+void statsd_writer_init_unlock() {
+    pthread_mutex_unlock(&log_init_lock);
+}
+
+static int statsdAvailable();
+static int statsdOpen();
+static void statsdClose();
+static int statsdWrite(struct timespec* ts, struct iovec* vec, size_t nr);
+static void statsdNoteDrop();
+
+struct android_log_transport_write statsdLoggerWrite = {
+        .name = "statsd",
+        .sock = -EBADF,
+        .available = statsdAvailable,
+        .open = statsdOpen,
+        .close = statsdClose,
+        .write = statsdWrite,
+        .noteDrop = statsdNoteDrop,
+};
+
+/* log_init_lock assumed */
+static int statsdOpen() {
+    int i, ret = 0;
+
+    i = atomic_load(&statsdLoggerWrite.sock);
+    if (i < 0) {
+        int flags = SOCK_DGRAM;
+#ifdef SOCK_CLOEXEC
+        flags |= SOCK_CLOEXEC;
+#endif
+#ifdef SOCK_NONBLOCK
+        flags |= SOCK_NONBLOCK;
+#endif
+        int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, flags, 0));
+        if (sock < 0) {
+            ret = -errno;
+        } else {
+            int sndbuf = 1 * 1024 * 1024;  // set max send buffer size 1MB
+            socklen_t bufLen = sizeof(sndbuf);
+            // SO_RCVBUF does not have an effect on unix domain socket, but SO_SNDBUF does.
+            // Proceed to connect even setsockopt fails.
+            setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &sndbuf, bufLen);
+            struct sockaddr_un un;
+            memset(&un, 0, sizeof(struct sockaddr_un));
+            un.sun_family = AF_UNIX;
+            strcpy(un.sun_path, "/dev/socket/statsdw");
+
+            if (TEMP_FAILURE_RETRY(
+                        connect(sock, (struct sockaddr*)&un, sizeof(struct sockaddr_un))) < 0) {
+                ret = -errno;
+                switch (ret) {
+                    case -ENOTCONN:
+                    case -ECONNREFUSED:
+                    case -ENOENT:
+                        i = atomic_exchange(&statsdLoggerWrite.sock, ret);
+                    /* FALLTHRU */
+                    default:
+                        break;
+                }
+                close(sock);
+            } else {
+                ret = atomic_exchange(&statsdLoggerWrite.sock, sock);
+                if ((ret >= 0) && (ret != sock)) {
+                    close(ret);
+                }
+                ret = 0;
+            }
+        }
+    }
+
+    return ret;
+}
+
+static void __statsdClose(int negative_errno) {
+    int sock = atomic_exchange(&statsdLoggerWrite.sock, negative_errno);
+    if (sock >= 0) {
+        close(sock);
+    }
+}
+
+static void statsdClose() {
+    __statsdClose(-EBADF);
+}
+
+static int statsdAvailable() {
+    if (atomic_load(&statsdLoggerWrite.sock) < 0) {
+        if (access("/dev/socket/statsdw", W_OK) == 0) {
+            return 0;
+        }
+        return -EBADF;
+    }
+    return 1;
+}
+
+static void statsdNoteDrop(int error, int tag) {
+    atomic_fetch_add_explicit(&dropped, 1, memory_order_relaxed);
+    atomic_exchange_explicit(&log_error, error, memory_order_relaxed);
+    atomic_exchange_explicit(&atom_tag, tag, memory_order_relaxed);
+}
+
+static int statsdWrite(struct timespec* ts, struct iovec* vec, size_t nr) {
+    ssize_t ret;
+    int sock;
+    static const unsigned headerLength = 1;
+    struct iovec newVec[nr + headerLength];
+    android_log_header_t header;
+    size_t i, payloadSize;
+
+    sock = atomic_load(&statsdLoggerWrite.sock);
+    if (sock < 0) switch (sock) {
+            case -ENOTCONN:
+            case -ECONNREFUSED:
+            case -ENOENT:
+                break;
+            default:
+                return -EBADF;
+        }
+    /*
+     *  struct {
+     *      // what we provide to socket
+     *      android_log_header_t header;
+     *      // caller provides
+     *      union {
+     *          struct {
+     *              char     prio;
+     *              char     payload[];
+     *          } string;
+     *          struct {
+     *              uint32_t tag
+     *              char     payload[];
+     *          } binary;
+     *      };
+     *  };
+     */
+
+    header.tid = gettid();
+    header.realtime.tv_sec = ts->tv_sec;
+    header.realtime.tv_nsec = ts->tv_nsec;
+
+    newVec[0].iov_base = (unsigned char*)&header;
+    newVec[0].iov_len = sizeof(header);
+
+    // If we dropped events before, try to tell statsd.
+    if (sock >= 0) {
+        int32_t snapshot = atomic_exchange_explicit(&dropped, 0, memory_order_relaxed);
+        if (snapshot) {
+            android_log_event_long_t buffer;
+            header.id = LOG_ID_STATS;
+            // store the last log error in the tag field. This tag field is not used by statsd.
+            buffer.header.tag = atomic_load(&log_error);
+            buffer.payload.type = EVENT_TYPE_LONG;
+            // format:
+            // |atom_tag|dropped_count|
+            int64_t composed_long = atomic_load(&atom_tag);
+            // Send 2 int32's via an int64.
+            composed_long = ((composed_long << 32) | ((int64_t)snapshot));
+            buffer.payload.data = composed_long;
+
+            newVec[headerLength].iov_base = &buffer;
+            newVec[headerLength].iov_len = sizeof(buffer);
+
+            ret = TEMP_FAILURE_RETRY(writev(sock, newVec, 2));
+            if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
+                atomic_fetch_add_explicit(&dropped, snapshot, memory_order_relaxed);
+            }
+        }
+    }
+
+    header.id = LOG_ID_STATS;
+
+    for (payloadSize = 0, i = headerLength; i < nr + headerLength; i++) {
+        newVec[i].iov_base = vec[i - headerLength].iov_base;
+        payloadSize += newVec[i].iov_len = vec[i - headerLength].iov_len;
+
+        if (payloadSize > LOGGER_ENTRY_MAX_PAYLOAD) {
+            newVec[i].iov_len -= payloadSize - LOGGER_ENTRY_MAX_PAYLOAD;
+            if (newVec[i].iov_len) {
+                ++i;
+            }
+            break;
+        }
+    }
+
+    /*
+     * The write below could be lost, but will never block.
+     *
+     * ENOTCONN occurs if statsd has died.
+     * ENOENT occurs if statsd is not running and socket is missing.
+     * ECONNREFUSED occurs if we can not reconnect to statsd.
+     * EAGAIN occurs if statsd is overloaded.
+     */
+    if (sock < 0) {
+        ret = sock;
+    } else {
+        ret = TEMP_FAILURE_RETRY(writev(sock, newVec, i));
+        if (ret < 0) {
+            ret = -errno;
+        }
+    }
+    switch (ret) {
+        case -ENOTCONN:
+        case -ECONNREFUSED:
+        case -ENOENT:
+            if (statd_writer_trylock()) {
+                return ret; /* in a signal handler? try again when less stressed
+                             */
+            }
+            __statsdClose(ret);
+            ret = statsdOpen();
+            statsd_writer_init_unlock();
+
+            if (ret < 0) {
+                return ret;
+            }
+
+            ret = TEMP_FAILURE_RETRY(writev(atomic_load(&statsdLoggerWrite.sock), newVec, i));
+            if (ret < 0) {
+                ret = -errno;
+            }
+        /* FALLTHRU */
+        default:
+            break;
+    }
+
+    if (ret > (ssize_t)sizeof(header)) {
+        ret -= sizeof(header);
+    }
+
+    return ret;
+}
diff --git a/libstats/statsd_writer.h b/libstats/push_compat/statsd_writer.h
similarity index 100%
rename from libstats/statsd_writer.h
rename to libstats/push_compat/statsd_writer.h
diff --git a/libstats/push_compat/tests/StatsEventCompat_test.cpp b/libstats/push_compat/tests/StatsEventCompat_test.cpp
new file mode 100644
index 0000000..2a70db5
--- /dev/null
+++ b/libstats/push_compat/tests/StatsEventCompat_test.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "include/StatsEventCompat.h"
+#include <android-base/properties.h>
+#include <android/api-level.h>
+#include <gtest/gtest.h>
+
+using android::base::GetProperty;
+
+const static bool mPlatformAtLeastR = android_get_device_api_level() >= __ANDROID_API_R__;
+
+TEST(StatsEventCompatTest, TestDynamicLoading) {
+    StatsEventCompat event;
+    EXPECT_EQ(mPlatformAtLeastR, event.useRSchema());
+}
diff --git a/libstats/socket/Android.bp b/libstats/socket/Android.bp
new file mode 100644
index 0000000..bf79ea2
--- /dev/null
+++ b/libstats/socket/Android.bp
@@ -0,0 +1,124 @@
+//
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// =========================================================================
+// Native library to write stats log to statsd socket on Android R and later
+// =========================================================================
+cc_defaults {
+    name: "libstatssocket_defaults",
+    srcs: [
+        "stats_buffer_writer.c",
+        "stats_event.c",
+        "stats_socket.c",
+        "statsd_writer.c",
+    ],
+    export_include_dirs: ["include"],
+    static_libs: [
+        "libcutils", // does not expose a stable C API
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+}
+
+cc_library {
+    name: "libstatssocket",
+    defaults: [
+        "libstatssocket_defaults",
+    ],
+    host_supported: true,
+    target: {
+        // On android, libstatssocket should only be linked as a shared lib
+        android: {
+            static: {
+                enabled: false,
+            },
+        },
+        host: {
+            shared: {
+                enabled: false,
+            },
+        },
+    },
+    stl: "libc++_static",
+
+    // enumerate stable entry points for APEX use
+    stubs: {
+        symbol_file: "libstatssocket.map.txt",
+        versions: [
+            "30",
+        ],
+    },
+    apex_available: [
+        "com.android.os.statsd",
+        "test_com.android.os.statsd",
+    ],
+}
+
+//TODO (b/149842105): Figure out if there is a better solution for this.
+cc_test_library {
+    name: "libstatssocket_private",
+    defaults: [
+        "libstatssocket_defaults",
+    ],
+    visibility: [
+        "//frameworks/base/apex/statsd/tests/libstatspull",
+        "//frameworks/base/cmds/statsd",
+    ],
+}
+
+cc_library_headers {
+    name: "libstatssocket_headers",
+    export_include_dirs: ["include"],
+    host_supported: true,
+    apex_available: ["com.android.resolv"],
+    min_sdk_version: "29",
+}
+
+cc_test {
+    name: "libstatssocket_test",
+    srcs: [
+        "tests/stats_event_test.cpp",
+        "tests/stats_writer_test.cpp",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    static_libs: [
+        "libgmock",
+        "libstatssocket_private",
+    ],
+    shared_libs: [
+        "libcutils",
+        "libutils",
+    ],
+    test_suites: ["device-tests", "mts"],
+    test_config: "libstatssocket_test.xml",
+    //TODO(b/153588990): Remove when the build system properly separates.
+    //32bit and 64bit architectures.
+    compile_multilib: "both",
+    multilib: {
+        lib64: {
+            suffix: "64",
+        },
+        lib32: {
+            suffix: "32",
+        },
+    },
+    require_root: true,
+}
diff --git a/libstats/socket/TEST_MAPPING b/libstats/socket/TEST_MAPPING
new file mode 100644
index 0000000..0224998
--- /dev/null
+++ b/libstats/socket/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit" : [
+    {
+      "name" : "libstatssocket_test"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/libstats/socket/include/stats_buffer_writer.h b/libstats/socket/include/stats_buffer_writer.h
new file mode 100644
index 0000000..5b41f0e
--- /dev/null
+++ b/libstats/socket/include/stats_buffer_writer.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __CPLUSPLUS
+void stats_log_close();
+int stats_log_is_closed();
+int write_buffer_to_statsd(void* buffer, size_t size, uint32_t atomId);
+#ifdef __cplusplus
+}
+#endif  // __CPLUSPLUS
diff --git a/libstats/socket/include/stats_event.h b/libstats/socket/include/stats_event.h
new file mode 100644
index 0000000..3d3baf9
--- /dev/null
+++ b/libstats/socket/include/stats_event.h
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_STATS_LOG_STATS_EVENT_H
+#define ANDROID_STATS_LOG_STATS_EVENT_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/*
+ * Functionality to build and store the buffer sent over the statsd socket.
+ * This code defines and encapsulates the socket protocol.
+ *
+ * Usage:
+ *      AStatsEvent* event = AStatsEvent_obtain();
+ *
+ *      AStatsEvent_setAtomId(event, atomId);
+ *      AStatsEvent_addBoolAnnotation(event, 5, false); // atom-level annotation
+ *      AStatsEvent_writeInt32(event, 24);
+ *      AStatsEvent_addBoolAnnotation(event, 1, true); // annotation for preceding atom field
+ *      AStatsEvent_addInt32Annotation(event, 2, 128);
+ *      AStatsEvent_writeFloat(event, 2.0);
+ *
+ *      AStatsEvent_write(event);
+ *      AStatsEvent_release(event);
+ *
+ * Note that calls to add atom fields and annotations should be made in the
+ * order that they are defined in the atom.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __CPLUSPLUS
+
+/**
+ * Opaque struct use to represent a StatsEvent. It builds and stores the data that is sent to
+ * statsd.
+ */
+struct AStatsEvent;
+typedef struct AStatsEvent AStatsEvent;
+
+/**
+ * Returns a new AStatsEvent. If you call this function, you must call AStatsEvent_release to free
+ * the allocated memory.
+ */
+AStatsEvent* AStatsEvent_obtain();
+
+/**
+ * Builds and finalizes the AStatsEvent for a pulled event.
+ * This should only be called for pulled AStatsEvents.
+ *
+ * After this function, the StatsEvent must not be modified in any way other than calling release or
+ * write.
+ *
+ * Build can be called multiple times without error.
+ * If the event has been built before, this function is a no-op.
+ */
+void AStatsEvent_build(AStatsEvent* event);
+
+/**
+ * Writes the StatsEvent to the stats log.
+ *
+ * After calling this, AStatsEvent_release must be called,
+ * and is the only function that can be safely called.
+ */
+int AStatsEvent_write(AStatsEvent* event);
+
+/**
+ * Frees the memory held by this StatsEvent.
+ *
+ * After calling this, the StatsEvent must not be used or modified in any way.
+ */
+void AStatsEvent_release(AStatsEvent* event);
+
+/**
+ * Sets the atom id for this StatsEvent.
+ *
+ * This function should be called immediately after AStatsEvent_obtain. It may
+ * be called additional times as well, but subsequent calls will have no effect.
+ **/
+void AStatsEvent_setAtomId(AStatsEvent* event, uint32_t atomId);
+
+/**
+ * Writes an int32_t field to this StatsEvent.
+ **/
+void AStatsEvent_writeInt32(AStatsEvent* event, int32_t value);
+
+/**
+ * Writes an int64_t field to this StatsEvent.
+ **/
+void AStatsEvent_writeInt64(AStatsEvent* event, int64_t value);
+
+/**
+ * Writes a float field to this StatsEvent.
+ **/
+void AStatsEvent_writeFloat(AStatsEvent* event, float value);
+
+/**
+ * Write a bool field to this StatsEvent.
+ **/
+void AStatsEvent_writeBool(AStatsEvent* event, bool value);
+
+/**
+ * Write a byte array field to this StatsEvent.
+ **/
+void AStatsEvent_writeByteArray(AStatsEvent* event, const uint8_t* buf, size_t numBytes);
+
+/**
+ * Write a string field to this StatsEvent.
+ *
+ * The string must be null-terminated.
+ **/
+void AStatsEvent_writeString(AStatsEvent* event, const char* value);
+
+/**
+ * Write an attribution chain field to this StatsEvent.
+ *
+ * The sizes of uids and tags must be equal. The AttributionNode at position i is
+ * made up of uids[i] and tags[i].
+ *
+ * \param uids array of uids in the attribution chain.
+ * \param tags array of tags in the attribution chain. Each tag must be null-terminated.
+ * \param numNodes the number of AttributionNodes in the attribution chain. This is the length of
+ *                 the uids and the tags.
+ **/
+void AStatsEvent_writeAttributionChain(AStatsEvent* event, const uint32_t* uids,
+                                       const char* const* tags, uint8_t numNodes);
+
+/**
+ * Write a bool annotation for the previous field written.
+ **/
+void AStatsEvent_addBoolAnnotation(AStatsEvent* event, uint8_t annotationId, bool value);
+
+/**
+ * Write an integer annotation for the previous field written.
+ **/
+void AStatsEvent_addInt32Annotation(AStatsEvent* event, uint8_t annotationId, int32_t value);
+
+// Internal/test APIs. Should not be exposed outside of the APEX.
+void AStatsEvent_overwriteTimestamp(AStatsEvent* event, uint64_t timestampNs);
+uint32_t AStatsEvent_getAtomId(AStatsEvent* event);
+// Size is an output parameter.
+uint8_t* AStatsEvent_getBuffer(AStatsEvent* event, size_t* size);
+uint32_t AStatsEvent_getErrors(AStatsEvent* event);
+
+#ifdef __cplusplus
+}
+#endif  // __CPLUSPLUS
+
+#endif  // ANDROID_STATS_LOG_STATS_EVENT_H
diff --git a/libstats/socket/include/stats_socket.h b/libstats/socket/include/stats_socket.h
new file mode 100644
index 0000000..5a75fc0
--- /dev/null
+++ b/libstats/socket/include/stats_socket.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+/**
+ * Helpers to manage the statsd socket.
+ **/
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __CPLUSPLUS
+
+/**
+ * Closes the statsd socket file descriptor.
+ **/
+void AStatsSocket_close();
+#ifdef __cplusplus
+}
+#endif  // __CPLUSPLUS
diff --git a/libstats/socket/libstatssocket.map.txt b/libstats/socket/libstatssocket.map.txt
new file mode 100644
index 0000000..5c13904
--- /dev/null
+++ b/libstats/socket/libstatssocket.map.txt
@@ -0,0 +1,20 @@
+LIBSTATSSOCKET {
+    global:
+        AStatsEvent_obtain; # apex # introduced=30
+        AStatsEvent_build; # apex # introduced=30
+        AStatsEvent_write; # apex # introduced=30
+        AStatsEvent_release; # apex # introduced=30
+        AStatsEvent_setAtomId; # apex # introduced=30
+        AStatsEvent_writeInt32; # apex # introduced=30
+        AStatsEvent_writeInt64; # apex # introduced=30
+        AStatsEvent_writeFloat; # apex # introduced=30
+        AStatsEvent_writeBool; # apex # introduced=30
+        AStatsEvent_writeByteArray; # apex # introduced=30
+        AStatsEvent_writeString; # apex # introduced=30
+        AStatsEvent_writeAttributionChain; # apex # introduced=30
+        AStatsEvent_addBoolAnnotation; # apex # introduced=30
+        AStatsEvent_addInt32Annotation; # apex # introduced=30
+        AStatsSocket_close; # apex # introduced=30
+    local:
+        *;
+};
diff --git a/libstats/socket/libstatssocket_test.xml b/libstats/socket/libstatssocket_test.xml
new file mode 100644
index 0000000..d2694d1
--- /dev/null
+++ b/libstats/socket/libstatssocket_test.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Runs libstatssocket_test.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-native" />
+    <option name="test-suite-tag" value="mts" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer"/>
+
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+       <option name="cleanup" value="true" />
+       <option name="push" value="libstatssocket_test->/data/local/tmp/libstatssocket_test" />
+       <option name="append-bitness" value="true" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="libstatssocket_test" />
+    </test>
+
+    <object type="module_controller" class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
+        <option name="mainline-module-package-name" value="com.google.android.os.statsd" />
+    </object>
+</configuration>
+
diff --git a/libstats/socket/stats_buffer_writer.c b/libstats/socket/stats_buffer_writer.c
new file mode 100644
index 0000000..549acdc
--- /dev/null
+++ b/libstats/socket/stats_buffer_writer.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "include/stats_buffer_writer.h"
+#ifdef __ANDROID__
+#include <cutils/properties.h>
+#endif
+#include <errno.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include "statsd_writer.h"
+
+static const uint32_t kStatsEventTag = 1937006964;
+
+extern struct android_log_transport_write statsdLoggerWrite;
+
+static int __write_to_statsd_init(struct iovec* vec, size_t nr);
+static int (*__write_to_statsd)(struct iovec* vec, size_t nr) = __write_to_statsd_init;
+
+void note_log_drop(int error, int atomId) {
+    statsdLoggerWrite.noteDrop(error, atomId);
+}
+
+void stats_log_close() {
+    statsd_writer_init_lock();
+    __write_to_statsd = __write_to_statsd_init;
+    if (statsdLoggerWrite.close) {
+        (*statsdLoggerWrite.close)();
+    }
+    statsd_writer_init_unlock();
+}
+
+int stats_log_is_closed() {
+    return statsdLoggerWrite.isClosed && (*statsdLoggerWrite.isClosed)();
+}
+
+int write_buffer_to_statsd(void* buffer, size_t size, uint32_t atomId) {
+    int ret = 1;
+
+    struct iovec vecs[2];
+    vecs[0].iov_base = (void*)&kStatsEventTag;
+    vecs[0].iov_len = sizeof(kStatsEventTag);
+    vecs[1].iov_base = buffer;
+    vecs[1].iov_len = size;
+
+    ret = __write_to_statsd(vecs, 2);
+
+    if (ret < 0) {
+        note_log_drop(ret, atomId);
+    }
+
+    return ret;
+}
+
+static int __write_to_stats_daemon(struct iovec* vec, size_t nr) {
+    int save_errno;
+    struct timespec ts;
+    size_t len, i;
+
+    for (len = i = 0; i < nr; ++i) {
+        len += vec[i].iov_len;
+    }
+    if (!len) {
+        return -EINVAL;
+    }
+
+    save_errno = errno;
+#if defined(__ANDROID__)
+    clock_gettime(CLOCK_REALTIME, &ts);
+#else
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    ts.tv_sec = tv.tv_sec;
+    ts.tv_nsec = tv.tv_usec * 1000;
+#endif
+
+    int ret = (int)(*statsdLoggerWrite.write)(&ts, vec, nr);
+    errno = save_errno;
+    return ret;
+}
+
+static int __write_to_statsd_initialize_locked() {
+    if (!statsdLoggerWrite.open || ((*statsdLoggerWrite.open)() < 0)) {
+        if (statsdLoggerWrite.close) {
+            (*statsdLoggerWrite.close)();
+            return -ENODEV;
+        }
+    }
+    return 1;
+}
+
+static int __write_to_statsd_init(struct iovec* vec, size_t nr) {
+    int ret, save_errno = errno;
+
+    statsd_writer_init_lock();
+
+    if (__write_to_statsd == __write_to_statsd_init) {
+        ret = __write_to_statsd_initialize_locked();
+        if (ret < 0) {
+            statsd_writer_init_unlock();
+            errno = save_errno;
+            return ret;
+        }
+
+        __write_to_statsd = __write_to_stats_daemon;
+    }
+
+    statsd_writer_init_unlock();
+
+    ret = __write_to_statsd(vec, nr);
+    errno = save_errno;
+    return ret;
+}
diff --git a/libstats/socket/stats_event.c b/libstats/socket/stats_event.c
new file mode 100644
index 0000000..f3e8087
--- /dev/null
+++ b/libstats/socket/stats_event.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "include/stats_event.h"
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "stats_buffer_writer.h"
+
+#define LOGGER_ENTRY_MAX_PAYLOAD 4068
+// Max payload size is 4 bytes less as 4 bytes are reserved for stats_eventTag.
+// See android_util_Stats_Log.cpp
+#define MAX_PUSH_EVENT_PAYLOAD (LOGGER_ENTRY_MAX_PAYLOAD - 4)
+
+#define MAX_PULL_EVENT_PAYLOAD (50 * 1024)  // 50 KB
+
+/* POSITIONS */
+#define POS_NUM_ELEMENTS 1
+#define POS_TIMESTAMP (POS_NUM_ELEMENTS + sizeof(uint8_t))
+#define POS_ATOM_ID (POS_TIMESTAMP + sizeof(uint8_t) + sizeof(uint64_t))
+
+/* LIMITS */
+#define MAX_ANNOTATION_COUNT 15
+#define MAX_BYTE_VALUE 127  // parsing side requires that lengths fit in 7 bits
+
+/* ERRORS */
+#define ERROR_NO_TIMESTAMP 0x1
+#define ERROR_NO_ATOM_ID 0x2
+#define ERROR_OVERFLOW 0x4
+#define ERROR_ATTRIBUTION_CHAIN_TOO_LONG 0x8
+#define ERROR_TOO_MANY_KEY_VALUE_PAIRS 0x10
+#define ERROR_ANNOTATION_DOES_NOT_FOLLOW_FIELD 0x20
+#define ERROR_INVALID_ANNOTATION_ID 0x40
+#define ERROR_ANNOTATION_ID_TOO_LARGE 0x80
+#define ERROR_TOO_MANY_ANNOTATIONS 0x100
+#define ERROR_TOO_MANY_FIELDS 0x200
+#define ERROR_INVALID_VALUE_TYPE 0x400
+#define ERROR_STRING_NOT_NULL_TERMINATED 0x800
+#define ERROR_ATOM_ID_INVALID_POSITION 0x2000
+
+/* TYPE IDS */
+#define INT32_TYPE 0x00
+#define INT64_TYPE 0x01
+#define STRING_TYPE 0x02
+#define LIST_TYPE 0x03
+#define FLOAT_TYPE 0x04
+#define BOOL_TYPE 0x05
+#define BYTE_ARRAY_TYPE 0x06
+#define OBJECT_TYPE 0x07
+#define KEY_VALUE_PAIRS_TYPE 0x08
+#define ATTRIBUTION_CHAIN_TYPE 0x09
+#define ERROR_TYPE 0x0F
+
+// The AStatsEvent struct holds the serialized encoding of an event
+// within a buf. Also includes other required fields.
+struct AStatsEvent {
+    uint8_t* buf;
+    // Location of last field within the buf. Here, field denotes either a
+    // metadata field (e.g. timestamp) or an atom field.
+    size_t lastFieldPos;
+    // Number of valid bytes within the buffer.
+    size_t numBytesWritten;
+    uint32_t numElements;
+    uint32_t atomId;
+    uint32_t errors;
+    bool built;
+    size_t bufSize;
+};
+
+static int64_t get_elapsed_realtime_ns() {
+    struct timespec t;
+    t.tv_sec = t.tv_nsec = 0;
+    clock_gettime(CLOCK_BOOTTIME, &t);
+    return (int64_t)t.tv_sec * 1000000000LL + t.tv_nsec;
+}
+
+AStatsEvent* AStatsEvent_obtain() {
+    AStatsEvent* event = malloc(sizeof(AStatsEvent));
+    event->lastFieldPos = 0;
+    event->numBytesWritten = 2;  // reserve first 2 bytes for root event type and number of elements
+    event->numElements = 0;
+    event->atomId = 0;
+    event->errors = 0;
+    event->built = false;
+    event->bufSize = MAX_PUSH_EVENT_PAYLOAD;
+    event->buf = (uint8_t*)calloc(event->bufSize, 1);
+
+    event->buf[0] = OBJECT_TYPE;
+    AStatsEvent_writeInt64(event, get_elapsed_realtime_ns());  // write the timestamp
+
+    return event;
+}
+
+void AStatsEvent_release(AStatsEvent* event) {
+    free(event->buf);
+    free(event);
+}
+
+void AStatsEvent_setAtomId(AStatsEvent* event, uint32_t atomId) {
+    if (event->atomId != 0) return;
+    if (event->numElements != 1) {
+        event->errors |= ERROR_ATOM_ID_INVALID_POSITION;
+        return;
+    }
+
+    event->atomId = atomId;
+    AStatsEvent_writeInt32(event, atomId);
+}
+
+// Overwrites the timestamp populated in AStatsEvent_obtain with a custom
+// timestamp. Should only be called from test code.
+void AStatsEvent_overwriteTimestamp(AStatsEvent* event, uint64_t timestampNs) {
+    memcpy(&event->buf[POS_TIMESTAMP + sizeof(uint8_t)], &timestampNs, sizeof(timestampNs));
+    // Do not increment numElements because we already accounted for the timestamp
+    // within AStatsEvent_obtain.
+}
+
+// Side-effect: modifies event->errors if the buffer would overflow
+static bool overflows(AStatsEvent* event, size_t size) {
+    const size_t totalBytesNeeded = event->numBytesWritten + size;
+    if (totalBytesNeeded > MAX_PULL_EVENT_PAYLOAD) {
+        event->errors |= ERROR_OVERFLOW;
+        return true;
+    }
+
+    // Expand buffer if needed.
+    if (event->bufSize < MAX_PULL_EVENT_PAYLOAD && totalBytesNeeded > event->bufSize) {
+        do {
+            event->bufSize *= 2;
+        } while (event->bufSize <= totalBytesNeeded);
+
+        if (event->bufSize > MAX_PULL_EVENT_PAYLOAD) {
+            event->bufSize = MAX_PULL_EVENT_PAYLOAD;
+        }
+
+        event->buf = (uint8_t*)realloc(event->buf, event->bufSize);
+    }
+    return false;
+}
+
+// Side-effect: all append functions increment event->numBytesWritten if there is
+// sufficient space within the buffer to place the value
+static void append_byte(AStatsEvent* event, uint8_t value) {
+    if (!overflows(event, sizeof(value))) {
+        event->buf[event->numBytesWritten] = value;
+        event->numBytesWritten += sizeof(value);
+    }
+}
+
+static void append_bool(AStatsEvent* event, bool value) {
+    append_byte(event, (uint8_t)value);
+}
+
+static void append_int32(AStatsEvent* event, int32_t value) {
+    if (!overflows(event, sizeof(value))) {
+        memcpy(&event->buf[event->numBytesWritten], &value, sizeof(value));
+        event->numBytesWritten += sizeof(value);
+    }
+}
+
+static void append_int64(AStatsEvent* event, int64_t value) {
+    if (!overflows(event, sizeof(value))) {
+        memcpy(&event->buf[event->numBytesWritten], &value, sizeof(value));
+        event->numBytesWritten += sizeof(value);
+    }
+}
+
+static void append_float(AStatsEvent* event, float value) {
+    if (!overflows(event, sizeof(value))) {
+        memcpy(&event->buf[event->numBytesWritten], &value, sizeof(value));
+        event->numBytesWritten += sizeof(float);
+    }
+}
+
+static void append_byte_array(AStatsEvent* event, const uint8_t* buf, size_t size) {
+    if (!overflows(event, size)) {
+        memcpy(&event->buf[event->numBytesWritten], buf, size);
+        event->numBytesWritten += size;
+    }
+}
+
+// Side-effect: modifies event->errors if buf is not properly null-terminated
+static void append_string(AStatsEvent* event, const char* buf) {
+    size_t size = strnlen(buf, MAX_PULL_EVENT_PAYLOAD);
+    if (size == MAX_PULL_EVENT_PAYLOAD) {
+        event->errors |= ERROR_STRING_NOT_NULL_TERMINATED;
+        return;
+    }
+
+    append_int32(event, size);
+    append_byte_array(event, (uint8_t*)buf, size);
+}
+
+static void start_field(AStatsEvent* event, uint8_t typeId) {
+    event->lastFieldPos = event->numBytesWritten;
+    append_byte(event, typeId);
+    event->numElements++;
+}
+
+void AStatsEvent_writeInt32(AStatsEvent* event, int32_t value) {
+    start_field(event, INT32_TYPE);
+    append_int32(event, value);
+}
+
+void AStatsEvent_writeInt64(AStatsEvent* event, int64_t value) {
+    start_field(event, INT64_TYPE);
+    append_int64(event, value);
+}
+
+void AStatsEvent_writeFloat(AStatsEvent* event, float value) {
+    start_field(event, FLOAT_TYPE);
+    append_float(event, value);
+}
+
+void AStatsEvent_writeBool(AStatsEvent* event, bool value) {
+    start_field(event, BOOL_TYPE);
+    append_bool(event, value);
+}
+
+void AStatsEvent_writeByteArray(AStatsEvent* event, const uint8_t* buf, size_t numBytes) {
+    start_field(event, BYTE_ARRAY_TYPE);
+    append_int32(event, numBytes);
+    append_byte_array(event, buf, numBytes);
+}
+
+// Value is assumed to be encoded using UTF8
+void AStatsEvent_writeString(AStatsEvent* event, const char* value) {
+    start_field(event, STRING_TYPE);
+    append_string(event, value);
+}
+
+// Tags are assumed to be encoded using UTF8
+void AStatsEvent_writeAttributionChain(AStatsEvent* event, const uint32_t* uids,
+                                       const char* const* tags, uint8_t numNodes) {
+    if (numNodes > MAX_BYTE_VALUE) {
+        event->errors |= ERROR_ATTRIBUTION_CHAIN_TOO_LONG;
+        return;
+    }
+
+    start_field(event, ATTRIBUTION_CHAIN_TYPE);
+    append_byte(event, numNodes);
+
+    for (uint8_t i = 0; i < numNodes; i++) {
+        append_int32(event, uids[i]);
+        append_string(event, tags[i]);
+    }
+}
+
+// Side-effect: modifies event->errors if field has too many annotations
+static void increment_annotation_count(AStatsEvent* event) {
+    uint8_t fieldType = event->buf[event->lastFieldPos] & 0x0F;
+    uint32_t oldAnnotationCount = (event->buf[event->lastFieldPos] & 0xF0) >> 4;
+    uint32_t newAnnotationCount = oldAnnotationCount + 1;
+
+    if (newAnnotationCount > MAX_ANNOTATION_COUNT) {
+        event->errors |= ERROR_TOO_MANY_ANNOTATIONS;
+        return;
+    }
+
+    event->buf[event->lastFieldPos] = (((uint8_t)newAnnotationCount << 4) & 0xF0) | fieldType;
+}
+
+void AStatsEvent_addBoolAnnotation(AStatsEvent* event, uint8_t annotationId, bool value) {
+    if (event->numElements < 2) {
+        event->errors |= ERROR_ANNOTATION_DOES_NOT_FOLLOW_FIELD;
+        return;
+    } else if (annotationId > MAX_BYTE_VALUE) {
+        event->errors |= ERROR_ANNOTATION_ID_TOO_LARGE;
+        return;
+    }
+
+    append_byte(event, annotationId);
+    append_byte(event, BOOL_TYPE);
+    append_bool(event, value);
+    increment_annotation_count(event);
+}
+
+void AStatsEvent_addInt32Annotation(AStatsEvent* event, uint8_t annotationId, int32_t value) {
+    if (event->numElements < 2) {
+        event->errors |= ERROR_ANNOTATION_DOES_NOT_FOLLOW_FIELD;
+        return;
+    } else if (annotationId > MAX_BYTE_VALUE) {
+        event->errors |= ERROR_ANNOTATION_ID_TOO_LARGE;
+        return;
+    }
+
+    append_byte(event, annotationId);
+    append_byte(event, INT32_TYPE);
+    append_int32(event, value);
+    increment_annotation_count(event);
+}
+
+uint32_t AStatsEvent_getAtomId(AStatsEvent* event) {
+    return event->atomId;
+}
+
+uint8_t* AStatsEvent_getBuffer(AStatsEvent* event, size_t* size) {
+    if (size) *size = event->numBytesWritten;
+    return event->buf;
+}
+
+uint32_t AStatsEvent_getErrors(AStatsEvent* event) {
+    return event->errors;
+}
+
+static void build_internal(AStatsEvent* event, const bool push) {
+    if (event->numElements > MAX_BYTE_VALUE) event->errors |= ERROR_TOO_MANY_FIELDS;
+    if (0 == event->atomId) event->errors |= ERROR_NO_ATOM_ID;
+    if (push && event->numBytesWritten > MAX_PUSH_EVENT_PAYLOAD) event->errors |= ERROR_OVERFLOW;
+
+    // If there are errors, rewrite buffer.
+    if (event->errors) {
+        // Discard everything after the atom id (including atom-level
+        // annotations). This leaves only two elements (timestamp and atom id).
+        event->numElements = 2;
+        // Reset number of atom-level annotations to 0.
+        event->buf[POS_ATOM_ID] = INT32_TYPE;
+        // Now, write errors to the buffer immediately after the atom id.
+        event->numBytesWritten = POS_ATOM_ID + sizeof(uint8_t) + sizeof(uint32_t);
+        start_field(event, ERROR_TYPE);
+        append_int32(event, event->errors);
+    }
+
+    event->buf[POS_NUM_ELEMENTS] = event->numElements;
+}
+
+void AStatsEvent_build(AStatsEvent* event) {
+    if (event->built) return;
+
+    build_internal(event, false /* push */);
+
+    event->built = true;
+}
+
+int AStatsEvent_write(AStatsEvent* event) {
+    build_internal(event, true /* push */);
+    return write_buffer_to_statsd(event->buf, event->numBytesWritten, event->atomId);
+}
diff --git a/libstats/socket/stats_socket.c b/libstats/socket/stats_socket.c
new file mode 100644
index 0000000..09f8967
--- /dev/null
+++ b/libstats/socket/stats_socket.c
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "include/stats_socket.h"
+#include "stats_buffer_writer.h"
+
+void AStatsSocket_close() {
+    stats_log_close();
+}
diff --git a/libstats/socket/statsd_writer.c b/libstats/socket/statsd_writer.c
new file mode 100644
index 0000000..73b7a7e
--- /dev/null
+++ b/libstats/socket/statsd_writer.c
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "statsd_writer.h"
+
+#include <cutils/fs.h>
+#include <cutils/sockets.h>
+#include <cutils/threads.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <poll.h>
+#include <private/android_filesystem_config.h>
+#include <private/android_logger.h>
+#include <stdarg.h>
+#include <stdatomic.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <time.h>
+#include <unistd.h>
+
+static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
+static atomic_int dropped = 0;
+static atomic_int log_error = 0;
+static atomic_int atom_tag = 0;
+
+void statsd_writer_init_lock() {
+    /*
+     * If we trigger a signal handler in the middle of locked activity and the
+     * signal handler logs a message, we could get into a deadlock state.
+     */
+    pthread_mutex_lock(&log_init_lock);
+}
+
+int statd_writer_trylock() {
+    return pthread_mutex_trylock(&log_init_lock);
+}
+
+void statsd_writer_init_unlock() {
+    pthread_mutex_unlock(&log_init_lock);
+}
+
+static int statsdAvailable();
+static int statsdOpen();
+static void statsdClose();
+static int statsdWrite(struct timespec* ts, struct iovec* vec, size_t nr);
+static void statsdNoteDrop();
+static int statsdIsClosed();
+
+struct android_log_transport_write statsdLoggerWrite = {
+        .name = "statsd",
+        .sock = -EBADF,
+        .available = statsdAvailable,
+        .open = statsdOpen,
+        .close = statsdClose,
+        .write = statsdWrite,
+        .noteDrop = statsdNoteDrop,
+        .isClosed = statsdIsClosed,
+};
+
+/* log_init_lock assumed */
+static int statsdOpen() {
+    int i, ret = 0;
+
+    i = atomic_load(&statsdLoggerWrite.sock);
+    if (i < 0) {
+        int flags = SOCK_DGRAM;
+#ifdef SOCK_CLOEXEC
+        flags |= SOCK_CLOEXEC;
+#endif
+#ifdef SOCK_NONBLOCK
+        flags |= SOCK_NONBLOCK;
+#endif
+        int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, flags, 0));
+        if (sock < 0) {
+            ret = -errno;
+        } else {
+            int sndbuf = 1 * 1024 * 1024;  // set max send buffer size 1MB
+            socklen_t bufLen = sizeof(sndbuf);
+            // SO_RCVBUF does not have an effect on unix domain socket, but SO_SNDBUF does.
+            // Proceed to connect even setsockopt fails.
+            setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &sndbuf, bufLen);
+            struct sockaddr_un un;
+            memset(&un, 0, sizeof(struct sockaddr_un));
+            un.sun_family = AF_UNIX;
+            strcpy(un.sun_path, "/dev/socket/statsdw");
+
+            if (TEMP_FAILURE_RETRY(
+                        connect(sock, (struct sockaddr*)&un, sizeof(struct sockaddr_un))) < 0) {
+                ret = -errno;
+                switch (ret) {
+                    case -ENOTCONN:
+                    case -ECONNREFUSED:
+                    case -ENOENT:
+                        i = atomic_exchange(&statsdLoggerWrite.sock, ret);
+                    /* FALLTHRU */
+                    default:
+                        break;
+                }
+                close(sock);
+            } else {
+                ret = atomic_exchange(&statsdLoggerWrite.sock, sock);
+                if ((ret >= 0) && (ret != sock)) {
+                    close(ret);
+                }
+                ret = 0;
+            }
+        }
+    }
+
+    return ret;
+}
+
+static void __statsdClose(int negative_errno) {
+    int sock = atomic_exchange(&statsdLoggerWrite.sock, negative_errno);
+    if (sock >= 0) {
+        close(sock);
+    }
+}
+
+static void statsdClose() {
+    __statsdClose(-EBADF);
+}
+
+static int statsdAvailable() {
+    if (atomic_load(&statsdLoggerWrite.sock) < 0) {
+        if (access("/dev/socket/statsdw", W_OK) == 0) {
+            return 0;
+        }
+        return -EBADF;
+    }
+    return 1;
+}
+
+static void statsdNoteDrop(int error, int tag) {
+    atomic_fetch_add_explicit(&dropped, 1, memory_order_relaxed);
+    atomic_exchange_explicit(&log_error, error, memory_order_relaxed);
+    atomic_exchange_explicit(&atom_tag, tag, memory_order_relaxed);
+}
+
+static int statsdIsClosed() {
+    if (atomic_load(&statsdLoggerWrite.sock) < 0) {
+        return 1;
+    }
+    return 0;
+}
+
+static int statsdWrite(struct timespec* ts, struct iovec* vec, size_t nr) {
+    ssize_t ret;
+    int sock;
+    static const unsigned headerLength = 1;
+    struct iovec newVec[nr + headerLength];
+    android_log_header_t header;
+    size_t i, payloadSize;
+
+    sock = atomic_load(&statsdLoggerWrite.sock);
+    if (sock < 0) switch (sock) {
+            case -ENOTCONN:
+            case -ECONNREFUSED:
+            case -ENOENT:
+                break;
+            default:
+                return -EBADF;
+        }
+    /*
+     *  struct {
+     *      // what we provide to socket
+     *      android_log_header_t header;
+     *      // caller provides
+     *      union {
+     *          struct {
+     *              char     prio;
+     *              char     payload[];
+     *          } string;
+     *          struct {
+     *              uint32_t tag
+     *              char     payload[];
+     *          } binary;
+     *      };
+     *  };
+     */
+
+    header.tid = gettid();
+    header.realtime.tv_sec = ts->tv_sec;
+    header.realtime.tv_nsec = ts->tv_nsec;
+
+    newVec[0].iov_base = (unsigned char*)&header;
+    newVec[0].iov_len = sizeof(header);
+
+    // If we dropped events before, try to tell statsd.
+    if (sock >= 0) {
+        int32_t snapshot = atomic_exchange_explicit(&dropped, 0, memory_order_relaxed);
+        if (snapshot) {
+            android_log_event_long_t buffer;
+            header.id = LOG_ID_STATS;
+            // store the last log error in the tag field. This tag field is not used by statsd.
+            buffer.header.tag = atomic_load(&log_error);
+            buffer.payload.type = EVENT_TYPE_LONG;
+            // format:
+            // |atom_tag|dropped_count|
+            int64_t composed_long = atomic_load(&atom_tag);
+            // Send 2 int32's via an int64.
+            composed_long = ((composed_long << 32) | ((int64_t)snapshot));
+            buffer.payload.data = composed_long;
+
+            newVec[headerLength].iov_base = &buffer;
+            newVec[headerLength].iov_len = sizeof(buffer);
+
+            ret = TEMP_FAILURE_RETRY(writev(sock, newVec, 2));
+            if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
+                atomic_fetch_add_explicit(&dropped, snapshot, memory_order_relaxed);
+            }
+        }
+    }
+
+    header.id = LOG_ID_STATS;
+
+    for (payloadSize = 0, i = headerLength; i < nr + headerLength; i++) {
+        newVec[i].iov_base = vec[i - headerLength].iov_base;
+        payloadSize += newVec[i].iov_len = vec[i - headerLength].iov_len;
+
+        if (payloadSize > LOGGER_ENTRY_MAX_PAYLOAD) {
+            newVec[i].iov_len -= payloadSize - LOGGER_ENTRY_MAX_PAYLOAD;
+            if (newVec[i].iov_len) {
+                ++i;
+            }
+            break;
+        }
+    }
+
+    /*
+     * The write below could be lost, but will never block.
+     *
+     * ENOTCONN occurs if statsd has died.
+     * ENOENT occurs if statsd is not running and socket is missing.
+     * ECONNREFUSED occurs if we can not reconnect to statsd.
+     * EAGAIN occurs if statsd is overloaded.
+     */
+    if (sock < 0) {
+        ret = sock;
+    } else {
+        ret = TEMP_FAILURE_RETRY(writev(sock, newVec, i));
+        if (ret < 0) {
+            ret = -errno;
+        }
+    }
+    switch (ret) {
+        case -ENOTCONN:
+        case -ECONNREFUSED:
+        case -ENOENT:
+            if (statd_writer_trylock()) {
+                return ret; /* in a signal handler? try again when less stressed
+                             */
+            }
+            __statsdClose(ret);
+            ret = statsdOpen();
+            statsd_writer_init_unlock();
+
+            if (ret < 0) {
+                return ret;
+            }
+
+            ret = TEMP_FAILURE_RETRY(writev(atomic_load(&statsdLoggerWrite.sock), newVec, i));
+            if (ret < 0) {
+                ret = -errno;
+            }
+        /* FALLTHRU */
+        default:
+            break;
+    }
+
+    if (ret > (ssize_t)sizeof(header)) {
+        ret -= sizeof(header);
+    }
+
+    return ret;
+}
diff --git a/libstats/socket/statsd_writer.h b/libstats/socket/statsd_writer.h
new file mode 100644
index 0000000..562bda5
--- /dev/null
+++ b/libstats/socket/statsd_writer.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_STATS_LOG_STATS_WRITER_H
+#define ANDROID_STATS_LOG_STATS_WRITER_H
+
+#include <pthread.h>
+#include <stdatomic.h>
+#include <sys/socket.h>
+
+/**
+ * Internal lock should not be exposed. This is bad design.
+ * TODO: rewrite it in c++ code and encapsulate the functionality in a
+ * StatsdWriter class.
+ */
+void statsd_writer_init_lock();
+int statsd_writer_init_trylock();
+void statsd_writer_init_unlock();
+
+struct android_log_transport_write {
+    const char* name; /* human name to describe the transport */
+    atomic_int sock;
+    int (*available)(); /* Does not cause resources to be taken */
+    int (*open)();      /* can be called multiple times, reusing current resources */
+    void (*close)();    /* free up resources */
+    /* write log to transport, returns number of bytes propagated, or -errno */
+    int (*write)(struct timespec* ts, struct iovec* vec, size_t nr);
+    /* note one log drop */
+    void (*noteDrop)(int error, int tag);
+    /* checks if the socket is closed */
+    int (*isClosed)();
+};
+
+#endif  // ANDROID_STATS_LOG_STATS_WRITER_H
diff --git a/libstats/socket/tests/stats_event_test.cpp b/libstats/socket/tests/stats_event_test.cpp
new file mode 100644
index 0000000..9a1fac8
--- /dev/null
+++ b/libstats/socket/tests/stats_event_test.cpp
@@ -0,0 +1,460 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "stats_event.h"
+#include <gtest/gtest.h>
+#include <utils/SystemClock.h>
+
+// Keep in sync with stats_event.c. Consider moving to separate header file to avoid duplication.
+/* ERRORS */
+#define ERROR_NO_TIMESTAMP 0x1
+#define ERROR_NO_ATOM_ID 0x2
+#define ERROR_OVERFLOW 0x4
+#define ERROR_ATTRIBUTION_CHAIN_TOO_LONG 0x8
+#define ERROR_TOO_MANY_KEY_VALUE_PAIRS 0x10
+#define ERROR_ANNOTATION_DOES_NOT_FOLLOW_FIELD 0x20
+#define ERROR_INVALID_ANNOTATION_ID 0x40
+#define ERROR_ANNOTATION_ID_TOO_LARGE 0x80
+#define ERROR_TOO_MANY_ANNOTATIONS 0x100
+#define ERROR_TOO_MANY_FIELDS 0x200
+#define ERROR_INVALID_VALUE_TYPE 0x400
+#define ERROR_STRING_NOT_NULL_TERMINATED 0x800
+#define ERROR_ATOM_ID_INVALID_POSITION 0x2000
+
+/* TYPE IDS */
+#define INT32_TYPE 0x00
+#define INT64_TYPE 0x01
+#define STRING_TYPE 0x02
+#define LIST_TYPE 0x03
+#define FLOAT_TYPE 0x04
+#define BOOL_TYPE 0x05
+#define BYTE_ARRAY_TYPE 0x06
+#define OBJECT_TYPE 0x07
+#define KEY_VALUE_PAIRS_TYPE 0x08
+#define ATTRIBUTION_CHAIN_TYPE 0x09
+#define ERROR_TYPE 0x0F
+
+using std::string;
+using std::vector;
+
+// Side-effect: this function moves the start of the buffer past the read value
+template <class T>
+T readNext(uint8_t** buffer) {
+    T value;
+    if ((reinterpret_cast<uintptr_t>(*buffer) % alignof(T)) == 0) {
+        value = *(T*)(*buffer);
+    } else {
+        memcpy(&value, *buffer, sizeof(T));
+    }
+    *buffer += sizeof(T);
+    return value;
+}
+
+void checkTypeHeader(uint8_t** buffer, uint8_t typeId, uint8_t numAnnotations = 0) {
+    uint8_t typeHeader = (numAnnotations << 4) | typeId;
+    EXPECT_EQ(readNext<uint8_t>(buffer), typeHeader);
+}
+
+template <class T>
+void checkScalar(uint8_t** buffer, T expectedValue) {
+    EXPECT_EQ(readNext<T>(buffer), expectedValue);
+}
+
+void checkString(uint8_t** buffer, const string& expectedString) {
+    uint32_t size = readNext<uint32_t>(buffer);
+    string parsedString((char*)(*buffer), size);
+    EXPECT_EQ(parsedString, expectedString);
+    *buffer += size;  // move buffer past string we just read
+}
+
+void checkByteArray(uint8_t** buffer, const vector<uint8_t>& expectedByteArray) {
+    uint32_t size = readNext<uint32_t>(buffer);
+    vector<uint8_t> parsedByteArray(*buffer, *buffer + size);
+    EXPECT_EQ(parsedByteArray, expectedByteArray);
+    *buffer += size;  // move buffer past byte array we just read
+}
+
+template <class T>
+void checkAnnotation(uint8_t** buffer, uint8_t annotationId, uint8_t typeId, T annotationValue) {
+    EXPECT_EQ(readNext<uint8_t>(buffer), annotationId);
+    EXPECT_EQ(readNext<uint8_t>(buffer), typeId);
+    checkScalar<T>(buffer, annotationValue);
+}
+
+void checkMetadata(uint8_t** buffer, uint8_t numElements, int64_t startTime, int64_t endTime,
+                   uint32_t atomId, uint8_t numAtomLevelAnnotations = 0) {
+    // All events start with OBJECT_TYPE id.
+    checkTypeHeader(buffer, OBJECT_TYPE);
+
+    // We increment by 2 because the number of elements listed in the
+    // serialization accounts for the timestamp and atom id as well.
+    checkScalar(buffer, static_cast<uint8_t>(numElements + 2));
+
+    // Check timestamp
+    checkTypeHeader(buffer, INT64_TYPE);
+    int64_t timestamp = readNext<int64_t>(buffer);
+    EXPECT_GE(timestamp, startTime);
+    EXPECT_LE(timestamp, endTime);
+
+    // Check atom id
+    checkTypeHeader(buffer, INT32_TYPE, numAtomLevelAnnotations);
+    checkScalar(buffer, atomId);
+}
+
+TEST(StatsEventTest, TestScalars) {
+    uint32_t atomId = 100;
+    int32_t int32Value = -5;
+    int64_t int64Value = -2 * android::elapsedRealtimeNano();
+    float floatValue = 2.0;
+    bool boolValue = false;
+
+    int64_t startTime = android::elapsedRealtimeNano();
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_writeInt32(event, int32Value);
+    AStatsEvent_writeInt64(event, int64Value);
+    AStatsEvent_writeFloat(event, floatValue);
+    AStatsEvent_writeBool(event, boolValue);
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, /*numElements=*/4, startTime, endTime, atomId);
+
+    // check int32 element
+    checkTypeHeader(&buffer, INT32_TYPE);
+    checkScalar(&buffer, int32Value);
+
+    // check int64 element
+    checkTypeHeader(&buffer, INT64_TYPE);
+    checkScalar(&buffer, int64Value);
+
+    // check float element
+    checkTypeHeader(&buffer, FLOAT_TYPE);
+    checkScalar(&buffer, floatValue);
+
+    // check bool element
+    checkTypeHeader(&buffer, BOOL_TYPE);
+    checkScalar(&buffer, boolValue);
+
+    EXPECT_EQ(buffer, bufferEnd);  // ensure that we have read the entire buffer
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestStrings) {
+    uint32_t atomId = 100;
+    string str = "test_string";
+
+    int64_t startTime = android::elapsedRealtimeNano();
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_writeString(event, str.c_str());
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, /*numElements=*/1, startTime, endTime, atomId);
+
+    checkTypeHeader(&buffer, STRING_TYPE);
+    checkString(&buffer, str);
+
+    EXPECT_EQ(buffer, bufferEnd);  // ensure that we have read the entire buffer
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestByteArrays) {
+    uint32_t atomId = 100;
+    vector<uint8_t> message = {'b', 'y', 't', '\0', 'e', 's'};
+
+    int64_t startTime = android::elapsedRealtimeNano();
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_writeByteArray(event, message.data(), message.size());
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, /*numElements=*/1, startTime, endTime, atomId);
+
+    checkTypeHeader(&buffer, BYTE_ARRAY_TYPE);
+    checkByteArray(&buffer, message);
+
+    EXPECT_EQ(buffer, bufferEnd);  // ensure that we have read the entire buffer
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestAttributionChains) {
+    uint32_t atomId = 100;
+
+    uint8_t numNodes = 50;
+    uint32_t uids[numNodes];
+    vector<string> tags(numNodes);  // storage that cTag elements point to
+    const char* cTags[numNodes];
+    for (int i = 0; i < (int)numNodes; i++) {
+        uids[i] = i;
+        tags.push_back("test" + std::to_string(i));
+        cTags[i] = tags[i].c_str();
+    }
+
+    int64_t startTime = android::elapsedRealtimeNano();
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_writeAttributionChain(event, uids, cTags, numNodes);
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, /*numElements=*/1, startTime, endTime, atomId);
+
+    checkTypeHeader(&buffer, ATTRIBUTION_CHAIN_TYPE);
+    checkScalar(&buffer, numNodes);
+    for (int i = 0; i < numNodes; i++) {
+        checkScalar(&buffer, uids[i]);
+        checkString(&buffer, tags[i]);
+    }
+
+    EXPECT_EQ(buffer, bufferEnd);  // ensure that we have read the entire buffer
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestFieldAnnotations) {
+    uint32_t atomId = 100;
+
+    // first element information
+    bool boolValue = false;
+    uint8_t boolAnnotation1Id = 1;
+    uint8_t boolAnnotation2Id = 2;
+    bool boolAnnotation1Value = true;
+    int32_t boolAnnotation2Value = 3;
+
+    // second element information
+    float floatValue = -5.0;
+    uint8_t floatAnnotation1Id = 3;
+    uint8_t floatAnnotation2Id = 4;
+    int32_t floatAnnotation1Value = 8;
+    bool floatAnnotation2Value = false;
+
+    int64_t startTime = android::elapsedRealtimeNano();
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_writeBool(event, boolValue);
+    AStatsEvent_addBoolAnnotation(event, boolAnnotation1Id, boolAnnotation1Value);
+    AStatsEvent_addInt32Annotation(event, boolAnnotation2Id, boolAnnotation2Value);
+    AStatsEvent_writeFloat(event, floatValue);
+    AStatsEvent_addInt32Annotation(event, floatAnnotation1Id, floatAnnotation1Value);
+    AStatsEvent_addBoolAnnotation(event, floatAnnotation2Id, floatAnnotation2Value);
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, /*numElements=*/2, startTime, endTime, atomId);
+
+    // check first element
+    checkTypeHeader(&buffer, BOOL_TYPE, /*numAnnotations=*/2);
+    checkScalar(&buffer, boolValue);
+    checkAnnotation(&buffer, boolAnnotation1Id, BOOL_TYPE, boolAnnotation1Value);
+    checkAnnotation(&buffer, boolAnnotation2Id, INT32_TYPE, boolAnnotation2Value);
+
+    // check second element
+    checkTypeHeader(&buffer, FLOAT_TYPE, /*numAnnotations=*/2);
+    checkScalar(&buffer, floatValue);
+    checkAnnotation(&buffer, floatAnnotation1Id, INT32_TYPE, floatAnnotation1Value);
+    checkAnnotation(&buffer, floatAnnotation2Id, BOOL_TYPE, floatAnnotation2Value);
+
+    EXPECT_EQ(buffer, bufferEnd);  // ensure that we have read the entire buffer
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestAtomLevelAnnotations) {
+    uint32_t atomId = 100;
+    // atom-level annotation information
+    uint8_t boolAnnotationId = 1;
+    uint8_t int32AnnotationId = 2;
+    bool boolAnnotationValue = false;
+    int32_t int32AnnotationValue = 5;
+
+    float fieldValue = -3.5;
+
+    int64_t startTime = android::elapsedRealtimeNano();
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_addBoolAnnotation(event, boolAnnotationId, boolAnnotationValue);
+    AStatsEvent_addInt32Annotation(event, int32AnnotationId, int32AnnotationValue);
+    AStatsEvent_writeFloat(event, fieldValue);
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, /*numElements=*/1, startTime, endTime, atomId,
+                  /*numAtomLevelAnnotations=*/2);
+
+    // check atom-level annotations
+    checkAnnotation(&buffer, boolAnnotationId, BOOL_TYPE, boolAnnotationValue);
+    checkAnnotation(&buffer, int32AnnotationId, INT32_TYPE, int32AnnotationValue);
+
+    // check first element
+    checkTypeHeader(&buffer, FLOAT_TYPE);
+    checkScalar(&buffer, fieldValue);
+
+    EXPECT_EQ(buffer, bufferEnd);  // ensure that we have read the entire buffer
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestNoAtomIdError) {
+    AStatsEvent* event = AStatsEvent_obtain();
+    // Don't set the atom id in order to trigger the error.
+    AStatsEvent_build(event);
+
+    uint32_t errors = AStatsEvent_getErrors(event);
+    EXPECT_EQ(errors & ERROR_NO_ATOM_ID, ERROR_NO_ATOM_ID);
+
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestPushOverflowError) {
+    const char* str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    const int writeCount = 120;  // Number of times to write str in the event.
+
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, 100);
+
+    // Add str to the event 120 times. Each str takes >35 bytes so this will
+    // overflow the 4068 byte buffer.
+    // We want to keep writeCount less than 127 to avoid hitting
+    // ERROR_TOO_MANY_FIELDS.
+    for (int i = 0; i < writeCount; i++) {
+        AStatsEvent_writeString(event, str);
+    }
+    AStatsEvent_write(event);
+
+    uint32_t errors = AStatsEvent_getErrors(event);
+    EXPECT_EQ(errors & ERROR_OVERFLOW, ERROR_OVERFLOW);
+
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestPullOverflowError) {
+    const uint32_t atomId = 10100;
+    const vector<uint8_t> bytes(430 /* number of elements */, 1 /* value of each element */);
+    const int writeCount = 120;  // Number of times to write bytes in the event.
+
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+
+    // Add bytes to the event 120 times. Size of bytes is 430 so this will
+    // overflow the 50 KB pulled event buffer.
+    // We want to keep writeCount less than 127 to avoid hitting
+    // ERROR_TOO_MANY_FIELDS.
+    for (int i = 0; i < writeCount; i++) {
+        AStatsEvent_writeByteArray(event, bytes.data(), bytes.size());
+    }
+    AStatsEvent_build(event);
+
+    uint32_t errors = AStatsEvent_getErrors(event);
+    EXPECT_EQ(errors & ERROR_OVERFLOW, ERROR_OVERFLOW);
+
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestLargePull) {
+    const uint32_t atomId = 100;
+    const string str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    const int writeCount = 120;  // Number of times to write str in the event.
+    const int64_t startTime = android::elapsedRealtimeNano();
+
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+
+    // Add str to the event 120 times.
+    // We want to keep writeCount less than 127 to avoid hitting
+    // ERROR_TOO_MANY_FIELDS.
+    for (int i = 0; i < writeCount; i++) {
+        AStatsEvent_writeString(event, str.c_str());
+    }
+    AStatsEvent_build(event);
+    int64_t endTime = android::elapsedRealtimeNano();
+
+    size_t bufferSize;
+    uint8_t* buffer = AStatsEvent_getBuffer(event, &bufferSize);
+    uint8_t* bufferEnd = buffer + bufferSize;
+
+    checkMetadata(&buffer, writeCount, startTime, endTime, atomId);
+
+    // Check all instances of str have been written.
+    for (int i = 0; i < writeCount; i++) {
+        checkTypeHeader(&buffer, STRING_TYPE);
+        checkString(&buffer, str);
+    }
+
+    EXPECT_EQ(buffer, bufferEnd);  // Ensure that we have read the entire buffer.
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestAtomIdInvalidPositionError) {
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_writeInt32(event, 0);
+    AStatsEvent_setAtomId(event, 100);
+    AStatsEvent_writeBool(event, true);
+    AStatsEvent_build(event);
+
+    uint32_t errors = AStatsEvent_getErrors(event);
+    EXPECT_EQ(errors & ERROR_ATOM_ID_INVALID_POSITION, ERROR_ATOM_ID_INVALID_POSITION);
+
+    AStatsEvent_release(event);
+}
+
+TEST(StatsEventTest, TestOverwriteTimestamp) {
+    uint32_t atomId = 100;
+    int64_t expectedTimestamp = 0x123456789;
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, atomId);
+    AStatsEvent_overwriteTimestamp(event, expectedTimestamp);
+    AStatsEvent_build(event);
+
+    uint8_t* buffer = AStatsEvent_getBuffer(event, NULL);
+
+    // Make sure that the timestamp is being overwritten.
+    checkMetadata(&buffer, /*numElements=*/0, /*startTime=*/expectedTimestamp,
+                  /*endTime=*/expectedTimestamp, atomId);
+
+    EXPECT_EQ(AStatsEvent_getErrors(event), 0);
+    AStatsEvent_release(event);
+}
diff --git a/libstats/socket/tests/stats_writer_test.cpp b/libstats/socket/tests/stats_writer_test.cpp
new file mode 100644
index 0000000..749599f
--- /dev/null
+++ b/libstats/socket/tests/stats_writer_test.cpp
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+#include "stats_buffer_writer.h"
+#include "stats_event.h"
+#include "stats_socket.h"
+
+TEST(StatsWriterTest, TestSocketClose) {
+    AStatsEvent* event = AStatsEvent_obtain();
+    AStatsEvent_setAtomId(event, 100);
+    AStatsEvent_writeInt32(event, 5);
+    int successResult = AStatsEvent_write(event);
+    AStatsEvent_release(event);
+
+    // In the case of a successful write, we return the number of bytes written.
+    EXPECT_GT(successResult, 0);
+    EXPECT_FALSE(stats_log_is_closed());
+
+    AStatsSocket_close();
+
+    EXPECT_TRUE(stats_log_is_closed());
+}
diff --git a/libstats/statsd_writer.c b/libstats/statsd_writer.c
deleted file mode 100644
index b1c05ea..0000000
--- a/libstats/statsd_writer.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Copyright (C) 2018, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "statsd_writer.h"
-
-#include <cutils/fs.h>
-#include <cutils/sockets.h>
-#include <cutils/threads.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <poll.h>
-#include <private/android_filesystem_config.h>
-#include <private/android_logger.h>
-#include <stdarg.h>
-#include <stdatomic.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <time.h>
-#include <unistd.h>
-
-/* branchless on many architectures. */
-#define min(x, y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
-
-#ifndef htole32
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define htole32(x) (x)
-#else
-#define htole32(x) __bswap_32(x)
-#endif
-#endif
-
-#ifndef htole64
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define htole64(x) (x)
-#else
-#define htole64(x) __bswap_64(x)
-#endif
-#endif
-
-static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
-static atomic_int dropped = 0;
-static atomic_int log_error = 0;
-static atomic_int atom_tag = 0;
-
-void statsd_writer_init_lock() {
-    /*
-     * If we trigger a signal handler in the middle of locked activity and the
-     * signal handler logs a message, we could get into a deadlock state.
-     */
-    pthread_mutex_lock(&log_init_lock);
-}
-
-int statd_writer_trylock() {
-    return pthread_mutex_trylock(&log_init_lock);
-}
-
-void statsd_writer_init_unlock() {
-    pthread_mutex_unlock(&log_init_lock);
-}
-
-static int statsdAvailable();
-static int statsdOpen();
-static void statsdClose();
-static int statsdWrite(struct timespec* ts, struct iovec* vec, size_t nr);
-static void statsdNoteDrop();
-
-struct android_log_transport_write statsdLoggerWrite = {
-        .name = "statsd",
-        .sock = -EBADF,
-        .available = statsdAvailable,
-        .open = statsdOpen,
-        .close = statsdClose,
-        .write = statsdWrite,
-        .noteDrop = statsdNoteDrop,
-};
-
-/* log_init_lock assumed */
-static int statsdOpen() {
-    int i, ret = 0;
-
-    i = atomic_load(&statsdLoggerWrite.sock);
-    if (i < 0) {
-        int flags = SOCK_DGRAM;
-#ifdef SOCK_CLOEXEC
-        flags |= SOCK_CLOEXEC;
-#endif
-#ifdef SOCK_NONBLOCK
-        flags |= SOCK_NONBLOCK;
-#endif
-        int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, flags, 0));
-        if (sock < 0) {
-            ret = -errno;
-        } else {
-            int sndbuf = 1 * 1024 * 1024;  // set max send buffer size 1MB
-            socklen_t bufLen = sizeof(sndbuf);
-            // SO_RCVBUF does not have an effect on unix domain socket, but SO_SNDBUF does.
-            // Proceed to connect even setsockopt fails.
-            setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &sndbuf, bufLen);
-            struct sockaddr_un un;
-            memset(&un, 0, sizeof(struct sockaddr_un));
-            un.sun_family = AF_UNIX;
-            strcpy(un.sun_path, "/dev/socket/statsdw");
-
-            if (TEMP_FAILURE_RETRY(
-                    connect(sock, (struct sockaddr*)&un, sizeof(struct sockaddr_un))) < 0) {
-                ret = -errno;
-                switch (ret) {
-                    case -ENOTCONN:
-                    case -ECONNREFUSED:
-                    case -ENOENT:
-                        i = atomic_exchange(&statsdLoggerWrite.sock, ret);
-                    /* FALLTHRU */
-                    default:
-                        break;
-                }
-                close(sock);
-            } else {
-                ret = atomic_exchange(&statsdLoggerWrite.sock, sock);
-                if ((ret >= 0) && (ret != sock)) {
-                    close(ret);
-                }
-                ret = 0;
-            }
-        }
-    }
-
-    return ret;
-}
-
-static void __statsdClose(int negative_errno) {
-    int sock = atomic_exchange(&statsdLoggerWrite.sock, negative_errno);
-    if (sock >= 0) {
-        close(sock);
-    }
-}
-
-static void statsdClose() {
-    __statsdClose(-EBADF);
-}
-
-static int statsdAvailable() {
-    if (atomic_load(&statsdLoggerWrite.sock) < 0) {
-        if (access("/dev/socket/statsdw", W_OK) == 0) {
-            return 0;
-        }
-        return -EBADF;
-    }
-    return 1;
-}
-
-static void statsdNoteDrop(int error, int tag) {
-    atomic_fetch_add_explicit(&dropped, 1, memory_order_relaxed);
-    atomic_exchange_explicit(&log_error, error, memory_order_relaxed);
-    atomic_exchange_explicit(&atom_tag, tag, memory_order_relaxed);
-}
-
-static int statsdWrite(struct timespec* ts, struct iovec* vec, size_t nr) {
-    ssize_t ret;
-    int sock;
-    static const unsigned headerLength = 1;
-    struct iovec newVec[nr + headerLength];
-    android_log_header_t header;
-    size_t i, payloadSize;
-
-    sock = atomic_load(&statsdLoggerWrite.sock);
-    if (sock < 0) switch (sock) {
-            case -ENOTCONN:
-            case -ECONNREFUSED:
-            case -ENOENT:
-                break;
-            default:
-                return -EBADF;
-        }
-    /*
-     *  struct {
-     *      // what we provide to socket
-     *      android_log_header_t header;
-     *      // caller provides
-     *      union {
-     *          struct {
-     *              char     prio;
-     *              char     payload[];
-     *          } string;
-     *          struct {
-     *              uint32_t tag
-     *              char     payload[];
-     *          } binary;
-     *      };
-     *  };
-     */
-
-    header.tid = gettid();
-    header.realtime.tv_sec = ts->tv_sec;
-    header.realtime.tv_nsec = ts->tv_nsec;
-
-    newVec[0].iov_base = (unsigned char*)&header;
-    newVec[0].iov_len = sizeof(header);
-
-    // If we dropped events before, try to tell statsd.
-    if (sock >= 0) {
-        int32_t snapshot = atomic_exchange_explicit(&dropped, 0, memory_order_relaxed);
-        if (snapshot) {
-            android_log_event_long_t buffer;
-            header.id = LOG_ID_STATS;
-            // store the last log error in the tag field. This tag field is not used by statsd.
-            buffer.header.tag = htole32(atomic_load(&log_error));
-            buffer.payload.type = EVENT_TYPE_LONG;
-            // format:
-            // |atom_tag|dropped_count|
-            int64_t composed_long = atomic_load(&atom_tag);
-            // Send 2 int32's via an int64.
-            composed_long = ((composed_long << 32) | ((int64_t)snapshot));
-            buffer.payload.data = htole64(composed_long);
-
-            newVec[headerLength].iov_base = &buffer;
-            newVec[headerLength].iov_len = sizeof(buffer);
-
-            ret = TEMP_FAILURE_RETRY(writev(sock, newVec, 2));
-            if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
-                atomic_fetch_add_explicit(&dropped, snapshot, memory_order_relaxed);
-            }
-        }
-    }
-
-    header.id = LOG_ID_STATS;
-
-    for (payloadSize = 0, i = headerLength; i < nr + headerLength; i++) {
-        newVec[i].iov_base = vec[i - headerLength].iov_base;
-        payloadSize += newVec[i].iov_len = vec[i - headerLength].iov_len;
-
-        if (payloadSize > LOGGER_ENTRY_MAX_PAYLOAD) {
-            newVec[i].iov_len -= payloadSize - LOGGER_ENTRY_MAX_PAYLOAD;
-            if (newVec[i].iov_len) {
-                ++i;
-            }
-            break;
-        }
-    }
-
-    /*
-     * The write below could be lost, but will never block.
-     *
-     * ENOTCONN occurs if statsd has died.
-     * ENOENT occurs if statsd is not running and socket is missing.
-     * ECONNREFUSED occurs if we can not reconnect to statsd.
-     * EAGAIN occurs if statsd is overloaded.
-     */
-    if (sock < 0) {
-        ret = sock;
-    } else {
-        ret = TEMP_FAILURE_RETRY(writev(sock, newVec, i));
-        if (ret < 0) {
-            ret = -errno;
-        }
-    }
-    switch (ret) {
-        case -ENOTCONN:
-        case -ECONNREFUSED:
-        case -ENOENT:
-            if (statd_writer_trylock()) {
-                return ret; /* in a signal handler? try again when less stressed
-                             */
-            }
-            __statsdClose(ret);
-            ret = statsdOpen();
-            statsd_writer_init_unlock();
-
-            if (ret < 0) {
-                return ret;
-            }
-
-            ret = TEMP_FAILURE_RETRY(writev(atomic_load(&statsdLoggerWrite.sock), newVec, i));
-            if (ret < 0) {
-                ret = -errno;
-            }
-        /* FALLTHRU */
-        default:
-            break;
-    }
-
-    if (ret > (ssize_t)sizeof(header)) {
-        ret -= sizeof(header);
-    }
-
-    return ret;
-}
diff --git a/libsync/Android.bp b/libsync/Android.bp
index e56f8ba..c996e1b 100644
--- a/libsync/Android.bp
+++ b/libsync/Android.bp
@@ -23,6 +23,7 @@
 cc_library {
     name: "libsync",
     recovery_available: true,
+    native_bridge_supported: true,
     defaults: ["libsync_defaults"],
 }
 
diff --git a/libsync/libsync.map.txt b/libsync/libsync.map.txt
index 53bb07a..91c3528 100644
--- a/libsync/libsync.map.txt
+++ b/libsync/libsync.map.txt
@@ -19,10 +19,10 @@
     sync_merge; # introduced=26
     sync_file_info; # introduced=26
     sync_file_info_free; # introduced=26
-    sync_wait; # vndk
-    sync_fence_info; # vndk
-    sync_pt_info; # vndk
-    sync_fence_info_free; # vndk
+    sync_wait; # llndk
+    sync_fence_info; # llndk
+    sync_pt_info; # llndk
+    sync_fence_info_free; # llndk
   local:
     *;
 };
diff --git a/libsystem/Android.bp b/libsystem/Android.bp
index 2e22b43..db61669 100644
--- a/libsystem/Android.bp
+++ b/libsystem/Android.bp
@@ -3,6 +3,12 @@
     vendor_available: true,
     recovery_available: true,
     host_supported: true,
+    native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "apex_inherit",
     export_include_dirs: ["include"],
 
     target: {
diff --git a/libsysutils/Android.bp b/libsysutils/Android.bp
index da5d86c..3b98bab 100644
--- a/libsysutils/Android.bp
+++ b/libsysutils/Android.bp
@@ -26,6 +26,24 @@
     ],
 
     export_include_dirs: ["include"],
+
+    tidy: true,
+    tidy_checks: [
+        "-*",
+        "cert-*",
+        "clang-analyzer-security*",
+        "android-*",
+    ],
+    tidy_checks_as_errors: [
+        "cert-*",
+        "clang-analyzer-security*",
+        "android-*",
+    ],
+    apex_available: [
+        "//apex_available:anyapex",
+        "//apex_available:platform",
+    ],
+    min_sdk_version: "apex_inherit",
 }
 
 cc_test {
diff --git a/libsysutils/src/NetlinkEvent.cpp b/libsysutils/src/NetlinkEvent.cpp
index 9dc2699..9c1621b 100644
--- a/libsysutils/src/NetlinkEvent.cpp
+++ b/libsysutils/src/NetlinkEvent.cpp
@@ -24,7 +24,6 @@
 #include <linux/if_link.h>
 #include <linux/netfilter/nfnetlink.h>
 #include <linux/netfilter/nfnetlink_log.h>
-#include <linux/netfilter_ipv4/ipt_ULOG.h>
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
 #include <net/if.h>
@@ -39,9 +38,29 @@
 const int LOCAL_QLOG_NL_EVENT = 112;
 const int LOCAL_NFLOG_PACKET = NFNL_SUBSYS_ULOG << 8 | NFULNL_MSG_PACKET;
 
+/* From deprecated ipt_ULOG.h to parse QLOG_NL_EVENT. */
+#define ULOG_MAC_LEN 80
+#define ULOG_PREFIX_LEN 32
+typedef struct ulog_packet_msg {
+    unsigned long mark;
+    long timestamp_sec;
+    long timestamp_usec;
+    unsigned int hook;
+    char indev_name[IFNAMSIZ];
+    char outdev_name[IFNAMSIZ];
+    size_t data_len;
+    char prefix[ULOG_PREFIX_LEN];
+    unsigned char mac_len;
+    unsigned char mac[ULOG_MAC_LEN];
+    unsigned char payload[0];
+} ulog_packet_msg_t;
+
+#include <android-base/parseint.h>
 #include <log/log.h>
 #include <sysutils/NetlinkEvent.h>
 
+using android::base::ParseInt;
+
 NetlinkEvent::NetlinkEvent() {
     mAction = Action::kUnknown;
     memset(mParams, 0, sizeof(mParams));
@@ -161,6 +180,7 @@
     struct ifa_cacheinfo *cacheinfo = nullptr;
     char addrstr[INET6_ADDRSTRLEN] = "";
     char ifname[IFNAMSIZ] = "";
+    uint32_t flags;
 
     if (!checkRtNetlinkLength(nh, sizeof(*ifaddr)))
         return false;
@@ -175,6 +195,9 @@
     // For log messages.
     const char *msgtype = rtMessageName(type);
 
+    // First 8 bits of flags. In practice will always be overridden when parsing IFA_FLAGS below.
+    flags = ifaddr->ifa_flags;
+
     struct rtattr *rta;
     int len = IFA_PAYLOAD(nh);
     for (rta = IFA_RTA(ifaddr); RTA_OK(rta, len); rta = RTA_NEXT(rta, len)) {
@@ -223,6 +246,9 @@
             }
 
             cacheinfo = (struct ifa_cacheinfo *) RTA_DATA(rta);
+
+        } else if (rta->rta_type == IFA_FLAGS) {
+            flags = *(uint32_t*)RTA_DATA(rta);
         }
     }
 
@@ -237,7 +263,7 @@
     mSubsystem = strdup("net");
     asprintf(&mParams[0], "ADDRESS=%s/%d", addrstr, ifaddr->ifa_prefixlen);
     asprintf(&mParams[1], "INTERFACE=%s", ifname);
-    asprintf(&mParams[2], "FLAGS=%u", ifaddr->ifa_flags);
+    asprintf(&mParams[2], "FLAGS=%u", flags);
     asprintf(&mParams[3], "SCOPE=%u", ifaddr->ifa_scope);
     asprintf(&mParams[4], "IFINDEX=%u", ifaddr->ifa_index);
 
@@ -301,8 +327,9 @@
         raw = (char*)nlAttrData(payload);
     }
 
-    char* hex = (char*) calloc(1, 5 + (len * 2));
-    strcpy(hex, "HEX=");
+    size_t hexSize = 5 + (len * 2);
+    char* hex = (char*)calloc(1, hexSize);
+    strlcpy(hex, "HEX=", hexSize);
     for (int i = 0; i < len; i++) {
         hex[4 + (i * 2)] = "0123456789abcdef"[(raw[i] >> 4) & 0xf];
         hex[5 + (i * 2)] = "0123456789abcdef"[raw[i] & 0xf];
@@ -474,23 +501,20 @@
         struct nd_opt_rdnss *rndss_opt = (struct nd_opt_rdnss *) opthdr;
         const uint32_t lifetime = ntohl(rndss_opt->nd_opt_rdnss_lifetime);
 
-        // Construct "SERVERS=<comma-separated string of DNS addresses>".
-        static const char kServerTag[] = "SERVERS=";
-        static const size_t kTagLength = strlen(kServerTag);
+        // Construct a comma-separated string of DNS addresses.
         // Reserve sufficient space for an IPv6 link-local address: all but the
         // last address are followed by ','; the last is followed by '\0'.
         static const size_t kMaxSingleAddressLength =
                 INET6_ADDRSTRLEN + strlen("%") + IFNAMSIZ + strlen(",");
-        const size_t bufsize = kTagLength + numaddrs * kMaxSingleAddressLength;
+        const size_t bufsize = numaddrs * kMaxSingleAddressLength;
         char *buf = (char *) malloc(bufsize);
         if (!buf) {
             SLOGE("RDNSS option: out of memory\n");
             return false;
         }
-        strcpy(buf, kServerTag);
-        size_t pos = kTagLength;
 
         struct in6_addr *addrs = (struct in6_addr *) (rndss_opt + 1);
+        size_t pos = 0;
         for (int i = 0; i < numaddrs; i++) {
             if (i > 0) {
                 buf[pos++] = ',';
@@ -508,9 +532,14 @@
         mSubsystem = strdup("net");
         asprintf(&mParams[0], "INTERFACE=%s", ifname);
         asprintf(&mParams[1], "LIFETIME=%u", lifetime);
-        mParams[2] = buf;
+        asprintf(&mParams[2], "SERVERS=%s", buf);
+        free(buf);
     } else if (opthdr->nd_opt_type == ND_OPT_DNSSL) {
         // TODO: support DNSSL.
+    } else if (opthdr->nd_opt_type == ND_OPT_CAPTIVE_PORTAL) {
+        // TODO: support CAPTIVE PORTAL.
+    } else if (opthdr->nd_opt_type == ND_OPT_PREF64) {
+        // TODO: support PREF64.
     } else {
         SLOGD("Unknown ND option type %d\n", opthdr->nd_opt_type);
         return false;
@@ -634,7 +663,9 @@
                 else if (!strcmp(a, "change"))
                     mAction = Action::kChange;
             } else if ((a = HAS_CONST_PREFIX(s, end, "SEQNUM=")) != nullptr) {
-                mSeq = atoi(a);
+                if (!ParseInt(a, &mSeq)) {
+                    SLOGE("NetlinkEvent::parseAsciiNetlinkMessage: failed to parse SEQNUM=%s", a);
+                }
             } else if ((a = HAS_CONST_PREFIX(s, end, "SUBSYSTEM=")) != nullptr) {
                 mSubsystem = strdup(a);
             } else if (param_idx < NL_PARAMS_MAX) {
diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index b7650a1..9b974c2 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -35,20 +35,13 @@
     },
 }
 
-cc_library {
-    name: "libunwindstack",
-    vendor_available: true,
-    recovery_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+cc_defaults {
+    name: "libunwindstack_defaults",
     defaults: ["libunwindstack_flags"],
     export_include_dirs: ["include"],
 
     srcs: [
         "ArmExidx.cpp",
-        "DexFile.cpp",
         "DexFiles.cpp",
         "DwarfCfa.cpp",
         "DwarfEhFrameWithHdr.cpp",
@@ -88,26 +81,6 @@
                 "-g",
             ],
         },
-        vendor: {
-            cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
-            exclude_srcs: [
-                "DexFile.cpp",
-                "DexFiles.cpp",
-            ],
-            exclude_shared_libs: [
-                "libdexfile_support",
-            ],
-        },
-        recovery: {
-            cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
-            exclude_srcs: [
-                "DexFile.cpp",
-                "DexFiles.cpp",
-            ],
-            exclude_shared_libs: [
-                "libdexfile_support",
-            ],
-        },
     },
 
     arch: {
@@ -125,22 +98,75 @@
         },
     },
 
-    whole_static_libs: [
-        "libdemangle"
-    ],
-
     static_libs: [
         "libprocinfo",
     ],
 
     shared_libs: [
         "libbase",
-        "libdexfile_support",
         "liblog",
         "liblzma",
     ],
 }
 
+cc_library {
+    name: "libunwindstack",
+    vendor_available: true,
+    recovery_available: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    defaults: ["libunwindstack_defaults"],
+
+    srcs: ["DexFile.cpp"],
+    cflags: ["-DDEXFILE_SUPPORT"],
+    shared_libs: ["libdexfile_support"],
+
+    target: {
+        vendor: {
+            cflags: ["-UDEXFILE_SUPPORT"],
+            exclude_srcs: ["DexFile.cpp"],
+            exclude_shared_libs: ["libdexfile_support"],
+        },
+        recovery: {
+            cflags: ["-UDEXFILE_SUPPORT"],
+            exclude_srcs: ["DexFile.cpp"],
+            exclude_shared_libs: ["libdexfile_support"],
+        },
+        native_bridge: {
+            cflags: ["-UDEXFILE_SUPPORT"],
+            exclude_srcs: ["DexFile.cpp"],
+            exclude_shared_libs: ["libdexfile_support"],
+        },
+    },
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.art.debug",
+        "com.android.art.release",
+    ],
+}
+
+// Static library without DEX support to avoid dependencies on the ART APEX.
+cc_library_static {
+    name: "libunwindstack_no_dex",
+    recovery_available: true,
+    defaults: ["libunwindstack_defaults"],
+
+    visibility: [
+        "//system/core/debuggerd",
+        "//system/core/init",
+        "//system/core/libbacktrace",
+    ],
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.runtime",
+    ],
+}
+
 //-------------------------------------------------------------------------
 // Unit Tests
 //-------------------------------------------------------------------------
@@ -157,10 +183,11 @@
     shared_libs: [
         "libunwindstack",
     ],
+    relative_install_path: "libunwindstack_test",
 }
 
-cc_test {
-    name: "libunwindstack_test",
+cc_defaults {
+    name: "libunwindstack_testlib_flags",
     defaults: ["libunwindstack_flags"],
 
     srcs: [
@@ -184,8 +211,9 @@
         "tests/ElfInterfaceTest.cpp",
         "tests/ElfTest.cpp",
         "tests/ElfTestUtils.cpp",
+        "tests/IsolatedSettings.cpp",
         "tests/JitDebugTest.cpp",
-        "tests/LocalUnwinderTest.cpp",
+        "tests/LocalUpdatableMapsTest.cpp",
         "tests/LogFake.cpp",
         "tests/MapInfoCreateMemoryTest.cpp",
         "tests/MapInfoGetBuildIDTest.cpp",
@@ -213,6 +241,7 @@
         "tests/UnwindOfflineTest.cpp",
         "tests/UnwindTest.cpp",
         "tests/UnwinderTest.cpp",
+        "tests/VerifyBionicTerminationTest.cpp",
     ],
 
     cflags: [
@@ -240,23 +269,46 @@
         "tests/files/offline/bad_eh_frame_hdr_arm64/*",
         "tests/files/offline/debug_frame_first_x86/*",
         "tests/files/offline/debug_frame_load_bias_arm/*",
+        "tests/files/offline/eh_frame_bias_x86/*",
         "tests/files/offline/eh_frame_hdr_begin_x86_64/*",
+        "tests/files/offline/empty_arm64/*",
+        "tests/files/offline/invalid_elf_offset_arm/*",
         "tests/files/offline/jit_debug_arm/*",
         "tests/files/offline/jit_debug_x86/*",
         "tests/files/offline/jit_map_arm/*",
         "tests/files/offline/gnu_debugdata_arm/*",
+        "tests/files/offline/load_bias_different_section_bias_arm64/*",
+        "tests/files/offline/load_bias_ro_rx_x86_64/*",
         "tests/files/offline/offset_arm/*",
         "tests/files/offline/shared_lib_in_apk_arm64/*",
         "tests/files/offline/shared_lib_in_apk_memory_only_arm64/*",
         "tests/files/offline/shared_lib_in_apk_single_map_arm64/*",
+        "tests/files/offline/signal_load_bias_arm/*",
         "tests/files/offline/straddle_arm/*",
         "tests/files/offline/straddle_arm64/*",
     ],
+}
+
+cc_test {
+    name: "libunwindstack_test",
+    defaults: ["libunwindstack_testlib_flags"],
+    isolated: true,
+
+    srcs: [
+        "tests/LocalUnwinderTest.cpp",
+    ],
     required: [
         "libunwindstack_local",
     ],
 }
 
+// Skip LocalUnwinderTest until atest understands required properly.
+cc_test {
+    name: "libunwindstack_unit_test",
+    defaults: ["libunwindstack_testlib_flags"],
+    isolated: true,
+}
+
 //-------------------------------------------------------------------------
 // Tools
 //-------------------------------------------------------------------------
diff --git a/libunwindstack/AndroidVersions.md b/libunwindstack/AndroidVersions.md
new file mode 100644
index 0000000..234f639
--- /dev/null
+++ b/libunwindstack/AndroidVersions.md
@@ -0,0 +1,116 @@
+# Unwinder Support Per Android Release
+This document describes the changes in the way the libunwindstack
+unwinder works on different Android versions. It does not describe
+every change in the code made between different versions, but is
+meant to allow an app developer to know what might be supported
+on different versions. It also describes the different way an unwind
+will display on different versions of Android.
+
+## Android P
+libunwindstack was first introduced in Android P.
+
+* Supports up to and including Dwarf 4 unwinding information.
+  See http://dwarfstd.org/ for Dwarf standards.
+* Supports Arm exidx unwinding.
+* Supports the gdb JIT unwinding interface, which is how ART creates unwinding
+  information for the JIT'd Java frames.
+* Supports special frames added to represent an ART Java interpreter frame.
+  ART has marked the dex pc using cfi information that the unwinder
+  understands and handles by adding a new frame in the stacktrace.
+
+## Note
+By default, lld creates two separate maps of the elf in memory, one read-only
+and one read/executable. The libunwindstack on P and the unwinder on older
+versions of Android will not unwind properly in this case. For apps that
+target Android P or older, make sure that `-Wl,--no-rosegment` is
+included in linker arguments when using lld.
+
+## Android Q
+* Fix bug (b/109824792) that handled load bias data incorrectly when
+  FDEs use pc relative addressing in the eh\_frame\_hdr.
+  Unfortunately, this wasn't fixed correctly in Q since it assumes
+  that the bias is coming from the program header for the executable
+  load. The real fix was to use the bias from the actual section data and
+  is not completely fixed until Android R. For apps targeting Android Q,
+  if it is being compiled with the llvm linker lld, it might be necessary
+  to add the linker option `-Wl,-zseparate-code` to avoid creating an elf
+  created this way.
+* Change the way the exidx section offset is found (b/110704153). Before
+  the p\_vaddr value from the program header minus the load bias was used
+  to find the start of the exidx data. Changed to use the p\_offset since
+  it doesn't require any load bias manipulations.
+* Fix bug handling of dwarf sections without any header (b/110235461).
+  Previously, the code assumed that FDEs are non-overlapping, and the FDEs
+  are always in sorted order from low pc to high pc. Thus the code would
+  read the entire set of CIEs/FDEs and then do a binary search to find
+  the appropriate FDE for a given pc. Now the code does a sequential read
+  and stops when it finds the FDE for a pc. It also understands the
+  overlapping FDEs, so find the first FDE that matches a pc. In practice,
+  elf files with this format only ever occurs if the file was generated
+  without an eh\_frame/eh\_frame\_hdr section and only a debug\_frame. The
+  other way this has been observed is when running simpleperf to unwind since
+  sometimes there is not enough information in the eh\_frame for all points
+  in the executable. On Android P, this would result in some incorrect
+  unwinds coming from simpleperf. Nearly all crashes from Android P should
+  be correct since the eh\_frame information was enough to do the unwind
+  properly.
+* Be permissive of badly formed elf files. Previously, any detected error
+  would result in unwinds stopping even if there is enough valid information
+  to do an unwind.
+  * The code now allows program header/section header offsets to point
+    to unreadable memory. As long as the code can find the unwind tables,
+    that is good enough.
+  * The code allows program headers/section headers to be missing.
+  * Allow a symbol table section header to point to invalid symbol table
+    values.
+* Support for the linker read-only segment option (b/109657296).
+  This is a feature of lld whereby there are two sections that
+  contain elf data. The first is read-only and contains the elf header data,
+  and the second is read-execute or execute only that
+  contains the executable code from the elf. Before this, the unwinder
+  always assumed that there was only a single read-execute section that
+  contained the elf header data and the executable code.
+* Build ID information for elf objects added. This will display the
+  NT\_GNU\_BUILD\_ID note found in elf files. This information can be used
+  to identify the exact version of a shared library to help get symbol
+  information when looking at a crash.
+* Add support for displaying the soname from an apk frame. Previously,
+  a frame map name would be only the apk, but now if the shared library
+  in the apk has set a soname, the map name will be `app.apk!libexample.so`
+  instead of only `app.apk`.
+* Minimal support for Dwarf 5. This merely treats a Dwarf 5 version
+  elf file as Dwarf 4. It does not support the new dwarf ops in Dwarf 5.
+  Since the new ops are not likely to be used very often, this allows
+  continuing to unwind even when encountering Dwarf 5 elf files.
+* Fix bug in pc handling of signal frames (b/130302288). In the previous
+  version, the pc would be wrong in the signal frame. The rest of the
+  unwind was correct, only the frame in the signal handler was incorrect
+  in Android P.
+* Detect when an elf file is not readable so that a message can be
+  displayed indicating that. This can happen when an app puts the shared
+  libraries in non-standard locations that are not readable due to
+  security restrictions (selinux rules).
+
+## Android R
+* Display the offsets for Java interpreter frames. If this frame came
+  from a non-zero offset map, no offset is printed. Previously, the
+  line would look like:
+
+    #17 pc 00500d7a  GoogleCamera.apk (com.google.camera.AndroidPriorityThread.run+10)
+
+  to:
+
+    #17 pc 00500d7a  GoogleCamera.apk (offset 0x11d0000) (com.google.camera.AndroidPriorityThread.run+10)
+* Fix bug where the load bias was set from the first PT\_LOAD program
+  header that has a zero p\_offset value. Now it is set from the first
+  executable PT\_LOAD program header. This has only ever been a problem
+  for host executables compiled for the x86\_64 architecture.
+* Switched to the libc++ demangler for function names. Previously, the
+  demangler used was not complete, so some less common demangled function
+  names would not be properly demangled or the function name would not be
+  demangled at all.
+* Fix bug in load bias handling. If the unwind information in the eh\_frame
+  or eh\_frame\_hdr does not have the same bias as the executable section,
+  and uses pc relative FDEs, the unwind will be incorrect. This tends
+  to truncate unwinds since the unwinder could not find the correct unwind
+  information for a given pc.
diff --git a/libunwindstack/DexFile.cpp b/libunwindstack/DexFile.cpp
index eaf867f..bf63abf 100644
--- a/libunwindstack/DexFile.cpp
+++ b/libunwindstack/DexFile.cpp
@@ -22,6 +22,9 @@
 
 #include <memory>
 
+#define LOG_TAG "unwind"
+#include <log/log.h>
+
 #include <android-base/unique_fd.h>
 #include <art_api/dex_file_support.h>
 
@@ -32,6 +35,19 @@
 
 namespace unwindstack {
 
+static bool CheckDexSupport() {
+  if (std::string err_msg; !art_api::dex::TryLoadLibdexfileExternal(&err_msg)) {
+    ALOGW("Failed to initialize DEX file support: %s", err_msg.c_str());
+    return false;
+  }
+  return true;
+}
+
+static bool HasDexSupport() {
+  static bool has_dex_support = CheckDexSupport();
+  return has_dex_support;
+}
+
 std::unique_ptr<DexFile> DexFile::Create(uint64_t dex_file_offset_in_memory, Memory* memory,
                                          MapInfo* info) {
   if (!info->name.empty()) {
@@ -57,6 +73,10 @@
 
 std::unique_ptr<DexFileFromFile> DexFileFromFile::Create(uint64_t dex_file_offset_in_file,
                                                          const std::string& file) {
+  if (UNLIKELY(!HasDexSupport())) {
+    return nullptr;
+  }
+
   android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(file.c_str(), O_RDONLY | O_CLOEXEC)));
   if (fd == -1) {
     return nullptr;
@@ -69,12 +89,16 @@
     return nullptr;
   }
 
-  return std::unique_ptr<DexFileFromFile>(new DexFileFromFile(std::move(*art_dex_file.release())));
+  return std::unique_ptr<DexFileFromFile>(new DexFileFromFile(art_dex_file));
 }
 
 std::unique_ptr<DexFileFromMemory> DexFileFromMemory::Create(uint64_t dex_file_offset_in_memory,
                                                              Memory* memory,
                                                              const std::string& name) {
+  if (UNLIKELY(!HasDexSupport())) {
+    return nullptr;
+  }
+
   std::vector<uint8_t> backing_memory;
 
   for (size_t size = 0;;) {
@@ -84,7 +108,7 @@
 
     if (art_dex_file != nullptr) {
       return std::unique_ptr<DexFileFromMemory>(
-          new DexFileFromMemory(std::move(*art_dex_file.release()), std::move(backing_memory)));
+          new DexFileFromMemory(art_dex_file, std::move(backing_memory)));
     }
 
     if (!error_msg.empty()) {
diff --git a/libunwindstack/DexFile.h b/libunwindstack/DexFile.h
index ca658e6..4e8369f 100644
--- a/libunwindstack/DexFile.h
+++ b/libunwindstack/DexFile.h
@@ -39,7 +39,8 @@
                                          MapInfo* info);
 
  protected:
-  DexFile(art_api::dex::DexFile&& art_dex_file) : art_api::dex::DexFile(std::move(art_dex_file)) {}
+  DexFile(std::unique_ptr<art_api::dex::DexFile>& art_dex_file)
+      : art_api::dex::DexFile(art_dex_file) {}
 };
 
 class DexFileFromFile : public DexFile {
@@ -48,7 +49,7 @@
                                                  const std::string& file);
 
  private:
-  DexFileFromFile(art_api::dex::DexFile&& art_dex_file) : DexFile(std::move(art_dex_file)) {}
+  DexFileFromFile(std::unique_ptr<art_api::dex::DexFile>& art_dex_file) : DexFile(art_dex_file) {}
 };
 
 class DexFileFromMemory : public DexFile {
@@ -57,8 +58,9 @@
                                                    Memory* memory, const std::string& name);
 
  private:
-  DexFileFromMemory(art_api::dex::DexFile&& art_dex_file, std::vector<uint8_t>&& memory)
-      : DexFile(std::move(art_dex_file)), memory_(std::move(memory)) {}
+  DexFileFromMemory(std::unique_ptr<art_api::dex::DexFile>& art_dex_file,
+                    std::vector<uint8_t>&& memory)
+      : DexFile(art_dex_file), memory_(std::move(memory)) {}
 
   std::vector<uint8_t> memory_;
 };
diff --git a/libunwindstack/DexFiles.cpp b/libunwindstack/DexFiles.cpp
index 63a77e5..2057fad 100644
--- a/libunwindstack/DexFiles.cpp
+++ b/libunwindstack/DexFiles.cpp
@@ -27,10 +27,21 @@
 #include <unwindstack/Maps.h>
 #include <unwindstack/Memory.h>
 
+#if defined(DEXFILE_SUPPORT)
 #include "DexFile.h"
+#endif
 
 namespace unwindstack {
 
+#if !defined(DEXFILE_SUPPORT)
+// Empty class definition.
+class DexFile {
+ public:
+  DexFile() = default;
+  virtual ~DexFile() = default;
+};
+#endif
+
 struct DEXFileEntry32 {
   uint32_t next;
   uint32_t prev;
@@ -128,6 +139,7 @@
   FindAndReadVariable(maps, "__dex_debug_descriptor");
 }
 
+#if defined(DEXFILE_SUPPORT)
 DexFile* DexFiles::GetDexFile(uint64_t dex_file_offset, MapInfo* info) {
   // Lock while processing the data.
   DexFile* dex_file;
@@ -141,6 +153,11 @@
   }
   return dex_file;
 }
+#else
+DexFile* DexFiles::GetDexFile(uint64_t, MapInfo*) {
+  return nullptr;
+}
+#endif
 
 bool DexFiles::GetAddr(size_t index, uint64_t* addr) {
   if (index < addrs_.size()) {
@@ -154,6 +171,7 @@
   return false;
 }
 
+#if defined(DEXFILE_SUPPORT)
 void DexFiles::GetMethodInformation(Maps* maps, MapInfo* info, uint64_t dex_pc,
                                     std::string* method_name, uint64_t* method_offset) {
   std::lock_guard<std::mutex> guard(lock_);
@@ -175,5 +193,8 @@
     }
   }
 }
+#else
+void DexFiles::GetMethodInformation(Maps*, MapInfo*, uint64_t, std::string*, uint64_t*) {}
+#endif
 
 }  // namespace unwindstack
diff --git a/libunwindstack/DwarfDebugFrame.h b/libunwindstack/DwarfDebugFrame.h
index 388ab0a..635cefd 100644
--- a/libunwindstack/DwarfDebugFrame.h
+++ b/libunwindstack/DwarfDebugFrame.h
@@ -26,9 +26,9 @@
 namespace unwindstack {
 
 template <typename AddressType>
-class DwarfDebugFrame : public DwarfSectionImplNoHdr<AddressType> {
+class DwarfDebugFrame : public DwarfSectionImpl<AddressType> {
  public:
-  DwarfDebugFrame(Memory* memory) : DwarfSectionImplNoHdr<AddressType>(memory) {
+  DwarfDebugFrame(Memory* memory) : DwarfSectionImpl<AddressType>(memory) {
     this->cie32_value_ = static_cast<uint32_t>(-1);
     this->cie64_value_ = static_cast<uint64_t>(-1);
   }
diff --git a/libunwindstack/DwarfEhFrame.h b/libunwindstack/DwarfEhFrame.h
index df441fb..7a41e45 100644
--- a/libunwindstack/DwarfEhFrame.h
+++ b/libunwindstack/DwarfEhFrame.h
@@ -25,9 +25,9 @@
 namespace unwindstack {
 
 template <typename AddressType>
-class DwarfEhFrame : public DwarfSectionImplNoHdr<AddressType> {
+class DwarfEhFrame : public DwarfSectionImpl<AddressType> {
  public:
-  DwarfEhFrame(Memory* memory) : DwarfSectionImplNoHdr<AddressType>(memory) {}
+  DwarfEhFrame(Memory* memory) : DwarfSectionImpl<AddressType>(memory) {}
   virtual ~DwarfEhFrame() = default;
 
   uint64_t GetCieOffsetFromFde32(uint32_t pointer) override {
diff --git a/libunwindstack/DwarfEhFrameWithHdr.cpp b/libunwindstack/DwarfEhFrameWithHdr.cpp
index 802beca..1358e51 100644
--- a/libunwindstack/DwarfEhFrameWithHdr.cpp
+++ b/libunwindstack/DwarfEhFrameWithHdr.cpp
@@ -32,14 +32,19 @@
 }
 
 template <typename AddressType>
-bool DwarfEhFrameWithHdr<AddressType>::Init(uint64_t offset, uint64_t size, uint64_t load_bias) {
-  load_bias_ = load_bias;
+bool DwarfEhFrameWithHdr<AddressType>::EhFrameInit(uint64_t offset, uint64_t size,
+                                                   int64_t section_bias) {
+  return DwarfSectionImpl<AddressType>::Init(offset, size, section_bias);
+}
 
+template <typename AddressType>
+bool DwarfEhFrameWithHdr<AddressType>::Init(uint64_t offset, uint64_t, int64_t section_bias) {
   memory_.clear_func_offset();
   memory_.clear_text_offset();
   memory_.set_data_offset(offset);
   memory_.set_cur_offset(offset);
-  pc_offset_ = offset;
+
+  hdr_section_bias_ = section_bias;
 
   // Read the first four bytes all at once.
   uint8_t data[4];
@@ -56,7 +61,7 @@
     return false;
   }
 
-  ptr_encoding_ = data[1];
+  uint8_t ptr_encoding = data[1];
   uint8_t fde_count_encoding = data[2];
   table_encoding_ = data[3];
   table_entry_size_ = memory_.template GetEncodedSize<AddressType>(table_encoding_);
@@ -70,7 +75,8 @@
   }
 
   memory_.set_pc_offset(memory_.cur_offset());
-  if (!memory_.template ReadEncodedValue<AddressType>(ptr_encoding_, &ptr_offset_)) {
+  uint64_t ptr_offset;
+  if (!memory_.template ReadEncodedValue<AddressType>(ptr_encoding, &ptr_offset)) {
     last_error_.code = DWARF_ERROR_MEMORY_INVALID;
     last_error_.address = memory_.cur_offset();
     return false;
@@ -88,10 +94,8 @@
     return false;
   }
 
-  entries_offset_ = memory_.cur_offset();
-  entries_end_ = offset + size;
-  entries_data_offset_ = offset;
-  cur_entries_offset_ = entries_offset_;
+  hdr_entries_offset_ = memory_.cur_offset();
+  hdr_entries_data_offset_ = offset;
 
   return true;
 }
@@ -107,6 +111,16 @@
     return nullptr;
   }
 
+  // There is a possibility that this entry points to a zero length FDE
+  // due to a bug. If this happens, try and find the non-zero length FDE
+  // from eh_frame directly. See b/142483624.
+  if (fde->pc_start == fde->pc_end) {
+    fde = DwarfSectionImpl<AddressType>::GetFdeFromPc(pc);
+    if (fde == nullptr) {
+      return nullptr;
+    }
+  }
+
   // Guaranteed pc >= pc_start, need to check pc in the fde range.
   if (pc < fde->pc_end) {
     return fde;
@@ -124,8 +138,8 @@
   }
   FdeInfo* info = &fde_info_[index];
 
-  memory_.set_data_offset(entries_data_offset_);
-  memory_.set_cur_offset(entries_offset_ + 2 * index * table_entry_size_);
+  memory_.set_data_offset(hdr_entries_data_offset_);
+  memory_.set_cur_offset(hdr_entries_offset_ + 2 * index * table_entry_size_);
   memory_.set_pc_offset(0);
   uint64_t value;
   if (!memory_.template ReadEncodedValue<AddressType>(table_encoding_, &value) ||
@@ -138,7 +152,7 @@
 
   // Relative encodings require adding in the load bias.
   if (IsEncodingRelative(table_encoding_)) {
-    value += load_bias_;
+    value += hdr_section_bias_;
   }
   info->pc = value;
   return info;
@@ -190,6 +204,16 @@
     if (fde == nullptr) {
       break;
     }
+
+    // There is a possibility that this entry points to a zero length FDE
+    // due to a bug. If this happens, try and find the non-zero length FDE
+    // from eh_frame directly. See b/142483624.
+    if (fde->pc_start == fde->pc_end) {
+      const DwarfFde* fde_real = DwarfSectionImpl<AddressType>::GetFdeFromPc(fde->pc_start);
+      if (fde_real != nullptr) {
+        fde = fde_real;
+      }
+    }
     fdes->push_back(fde);
   }
 }
diff --git a/libunwindstack/DwarfEhFrameWithHdr.h b/libunwindstack/DwarfEhFrameWithHdr.h
index 0e5eef7..f7c010c 100644
--- a/libunwindstack/DwarfEhFrameWithHdr.h
+++ b/libunwindstack/DwarfEhFrameWithHdr.h
@@ -34,11 +34,7 @@
   // Add these so that the protected members of DwarfSectionImpl
   // can be accessed without needing a this->.
   using DwarfSectionImpl<AddressType>::memory_;
-  using DwarfSectionImpl<AddressType>::pc_offset_;
-  using DwarfSectionImpl<AddressType>::entries_offset_;
-  using DwarfSectionImpl<AddressType>::entries_end_;
   using DwarfSectionImpl<AddressType>::last_error_;
-  using DwarfSectionImpl<AddressType>::load_bias_;
 
   struct FdeInfo {
     AddressType pc;
@@ -49,19 +45,20 @@
   virtual ~DwarfEhFrameWithHdr() = default;
 
   uint64_t GetCieOffsetFromFde32(uint32_t pointer) override {
-    return this->memory_.cur_offset() - pointer - 4;
+    return memory_.cur_offset() - pointer - 4;
   }
 
   uint64_t GetCieOffsetFromFde64(uint64_t pointer) override {
-    return this->memory_.cur_offset() - pointer - 8;
+    return memory_.cur_offset() - pointer - 8;
   }
 
   uint64_t AdjustPcFromFde(uint64_t pc) override {
     // The eh_frame uses relative pcs.
-    return pc + this->memory_.cur_offset() - 4;
+    return pc + memory_.cur_offset() - 4;
   }
 
-  bool Init(uint64_t offset, uint64_t size, uint64_t load_bias) override;
+  bool EhFrameInit(uint64_t offset, uint64_t size, int64_t section_bias);
+  bool Init(uint64_t offset, uint64_t size, int64_t section_bias) override;
 
   const DwarfFde* GetFdeFromPc(uint64_t pc) override;
 
@@ -72,17 +69,15 @@
   void GetFdes(std::vector<const DwarfFde*>* fdes) override;
 
  protected:
-  uint8_t version_;
-  uint8_t ptr_encoding_;
-  uint8_t table_encoding_;
-  size_t table_entry_size_;
+  uint8_t version_ = 0;
+  uint8_t table_encoding_ = 0;
+  size_t table_entry_size_ = 0;
 
-  uint64_t ptr_offset_;
+  uint64_t hdr_entries_offset_ = 0;
+  uint64_t hdr_entries_data_offset_ = 0;
+  uint64_t hdr_section_bias_ = 0;
 
-  uint64_t entries_data_offset_;
-  uint64_t cur_entries_offset_ = 0;
-
-  uint64_t fde_count_;
+  uint64_t fde_count_ = 0;
   std::unordered_map<uint64_t, FdeInfo> fde_info_;
 };
 
diff --git a/libunwindstack/DwarfMemory.cpp b/libunwindstack/DwarfMemory.cpp
index b505900..2e388c6 100644
--- a/libunwindstack/DwarfMemory.cpp
+++ b/libunwindstack/DwarfMemory.cpp
@@ -111,7 +111,7 @@
       // Nothing to do.
       break;
     case DW_EH_PE_pcrel:
-      if (pc_offset_ == static_cast<uint64_t>(-1)) {
+      if (pc_offset_ == INT64_MAX) {
         // Unsupported encoding.
         return false;
       }
diff --git a/libunwindstack/DwarfSection.cpp b/libunwindstack/DwarfSection.cpp
index 849a31a..18bd490 100644
--- a/libunwindstack/DwarfSection.cpp
+++ b/libunwindstack/DwarfSection.cpp
@@ -69,6 +69,7 @@
     return &cie_entry->second;
   }
   DwarfCie* cie = &cie_entries_[offset];
+  memory_.set_data_offset(entries_offset_);
   memory_.set_cur_offset(offset);
   if (!FillInCieHeader(cie) || !FillInCie(cie)) {
     // Erase the cached entry.
@@ -251,6 +252,7 @@
     return &fde_entry->second;
   }
   DwarfFde* fde = &fde_entries_[offset];
+  memory_.set_data_offset(entries_offset_);
   memory_.set_cur_offset(offset);
   if (!FillInFdeHeader(fde) || !FillInFde(fde)) {
     fde_entries_.erase(offset);
@@ -333,7 +335,7 @@
   memory_.set_cur_offset(cur_offset);
 
   // The load bias only applies to the start.
-  memory_.set_pc_offset(load_bias_);
+  memory_.set_pc_offset(section_bias_);
   bool valid = memory_.ReadEncodedValue<AddressType>(cie->fde_address_encoding, &fde->pc_start);
   fde->pc_start = AdjustPcFromFde(fde->pc_start);
 
@@ -591,8 +593,8 @@
 }
 
 template <typename AddressType>
-bool DwarfSectionImplNoHdr<AddressType>::Init(uint64_t offset, uint64_t size, uint64_t load_bias) {
-  load_bias_ = load_bias;
+bool DwarfSectionImpl<AddressType>::Init(uint64_t offset, uint64_t size, int64_t section_bias) {
+  section_bias_ = section_bias;
   entries_offset_ = offset;
   next_entries_offset_ = offset;
   entries_end_ = offset + size;
@@ -600,7 +602,6 @@
   memory_.clear_func_offset();
   memory_.clear_text_offset();
   memory_.set_cur_offset(offset);
-  memory_.set_data_offset(offset);
   pc_offset_ = offset;
 
   return true;
@@ -616,33 +617,13 @@
 // and an fde has a start pc of 0x100 and end pc of 0x500, two new entries
 // will be added: 0x200, 0x100 and 0x500, 0x400.
 template <typename AddressType>
-void DwarfSectionImplNoHdr<AddressType>::InsertFde(const DwarfFde* fde) {
+void DwarfSectionImpl<AddressType>::InsertFde(const DwarfFde* fde) {
   uint64_t start = fde->pc_start;
   uint64_t end = fde->pc_end;
   auto it = fdes_.upper_bound(start);
-  bool add_element = false;
-  while (it != fdes_.end() && start < end) {
-    if (add_element) {
-      add_element = false;
-      if (end < it->second.first) {
-        if (it->first == end) {
-          return;
-        }
-        fdes_[end] = std::make_pair(start, fde);
-        return;
-      }
-      if (start != it->second.first) {
-        fdes_[it->second.first] = std::make_pair(start, fde);
-      }
-    }
-    if (start < it->first) {
-      if (end < it->second.first) {
-        if (it->first != end) {
-          fdes_[end] = std::make_pair(start, fde);
-        }
-        return;
-      }
-      add_element = true;
+  while (it != fdes_.end() && start < end && it->second.first < end) {
+    if (start < it->second.first) {
+      fdes_[it->second.first] = std::make_pair(start, fde);
     }
     start = it->first;
     ++it;
@@ -653,9 +634,10 @@
 }
 
 template <typename AddressType>
-bool DwarfSectionImplNoHdr<AddressType>::GetNextCieOrFde(DwarfFde** fde_entry) {
+bool DwarfSectionImpl<AddressType>::GetNextCieOrFde(const DwarfFde** fde_entry) {
   uint64_t start_offset = next_entries_offset_;
 
+  memory_.set_data_offset(entries_offset_);
   memory_.set_cur_offset(next_entries_offset_);
   uint32_t value32;
   if (!memory_.ReadBytes(&value32, sizeof(value32))) {
@@ -688,7 +670,7 @@
       entry_is_cie = true;
       cie_fde_encoding = DW_EH_PE_sdata8;
     } else {
-      cie_offset = this->GetCieOffsetFromFde64(value64);
+      cie_offset = GetCieOffsetFromFde64(value64);
     }
   } else {
     next_entries_offset_ = memory_.cur_offset() + value32;
@@ -704,37 +686,45 @@
       entry_is_cie = true;
       cie_fde_encoding = DW_EH_PE_sdata4;
     } else {
-      cie_offset = this->GetCieOffsetFromFde32(value32);
+      cie_offset = GetCieOffsetFromFde32(value32);
     }
   }
 
   if (entry_is_cie) {
-    DwarfCie* cie = &cie_entries_[start_offset];
-    cie->lsda_encoding = DW_EH_PE_omit;
-    cie->cfa_instructions_end = next_entries_offset_;
-    cie->fde_address_encoding = cie_fde_encoding;
+    auto entry = cie_entries_.find(start_offset);
+    if (entry == cie_entries_.end()) {
+      DwarfCie* cie = &cie_entries_[start_offset];
+      cie->lsda_encoding = DW_EH_PE_omit;
+      cie->cfa_instructions_end = next_entries_offset_;
+      cie->fde_address_encoding = cie_fde_encoding;
 
-    if (!this->FillInCie(cie)) {
-      cie_entries_.erase(start_offset);
-      return false;
+      if (!FillInCie(cie)) {
+        cie_entries_.erase(start_offset);
+        return false;
+      }
     }
     *fde_entry = nullptr;
   } else {
-    DwarfFde* fde = &fde_entries_[start_offset];
-    fde->cfa_instructions_end = next_entries_offset_;
-    fde->cie_offset = cie_offset;
+    auto entry = fde_entries_.find(start_offset);
+    if (entry != fde_entries_.end()) {
+      *fde_entry = &entry->second;
+    } else {
+      DwarfFde* fde = &fde_entries_[start_offset];
+      fde->cfa_instructions_end = next_entries_offset_;
+      fde->cie_offset = cie_offset;
 
-    if (!this->FillInFde(fde)) {
-      fde_entries_.erase(start_offset);
-      return false;
+      if (!FillInFde(fde)) {
+        fde_entries_.erase(start_offset);
+        return false;
+      }
+      *fde_entry = fde;
     }
-    *fde_entry = fde;
   }
   return true;
 }
 
 template <typename AddressType>
-void DwarfSectionImplNoHdr<AddressType>::GetFdes(std::vector<const DwarfFde*>* fdes) {
+void DwarfSectionImpl<AddressType>::GetFdes(std::vector<const DwarfFde*>* fdes) {
   // Loop through the already cached entries.
   uint64_t entry_offset = entries_offset_;
   while (entry_offset < next_entries_offset_) {
@@ -753,7 +743,7 @@
   }
 
   while (next_entries_offset_ < entries_end_) {
-    DwarfFde* fde;
+    const DwarfFde* fde;
     if (!GetNextCieOrFde(&fde)) {
       break;
     }
@@ -770,7 +760,7 @@
 }
 
 template <typename AddressType>
-const DwarfFde* DwarfSectionImplNoHdr<AddressType>::GetFdeFromPc(uint64_t pc) {
+const DwarfFde* DwarfSectionImpl<AddressType>::GetFdeFromPc(uint64_t pc) {
   // Search in the list of fdes we already have.
   auto it = fdes_.upper_bound(pc);
   if (it != fdes_.end()) {
@@ -783,7 +773,7 @@
   // to do a linear search of the fdes by pc. As fdes are read, a cached
   // search map is created.
   while (next_entries_offset_ < entries_end_) {
-    DwarfFde* fde;
+    const DwarfFde* fde;
     if (!GetNextCieOrFde(&fde)) {
       return nullptr;
     }
@@ -806,10 +796,6 @@
 template class DwarfSectionImpl<uint32_t>;
 template class DwarfSectionImpl<uint64_t>;
 
-// Explicitly instantiate DwarfSectionImplNoHdr
-template class DwarfSectionImplNoHdr<uint32_t>;
-template class DwarfSectionImplNoHdr<uint64_t>;
-
 // Explicitly instantiate DwarfDebugFrame
 template class DwarfDebugFrame<uint32_t>;
 template class DwarfDebugFrame<uint64_t>;
diff --git a/libunwindstack/Elf.cpp b/libunwindstack/Elf.cpp
index 3454913..f01b092 100644
--- a/libunwindstack/Elf.cpp
+++ b/libunwindstack/Elf.cpp
@@ -53,7 +53,7 @@
 
   valid_ = interface_->Init(&load_bias_);
   if (valid_) {
-    interface_->InitHeaders(load_bias_);
+    interface_->InitHeaders();
     InitGnuDebugdata();
   } else {
     interface_.reset(nullptr);
@@ -77,9 +77,9 @@
 
   // Ignore the load_bias from the compressed section, the correct load bias
   // is in the uncompressed data.
-  uint64_t load_bias;
+  int64_t load_bias;
   if (gnu->Init(&load_bias)) {
-    gnu->InitHeaders(load_bias);
+    gnu->InitHeaders();
     interface_->SetGnuDebugdataInterface(gnu);
   } else {
     // Free all of the memory associated with the gnu_debugdata section.
@@ -112,35 +112,33 @@
                      gnu_debugdata_interface_->GetFunctionName(addr, name, func_offset)));
 }
 
-bool Elf::GetGlobalVariable(const std::string& name, uint64_t* memory_address) {
+bool Elf::GetGlobalVariableOffset(const std::string& name, uint64_t* memory_offset) {
   if (!valid_) {
     return false;
   }
 
-  if (!interface_->GetGlobalVariable(name, memory_address) &&
+  uint64_t vaddr;
+  if (!interface_->GetGlobalVariable(name, &vaddr) &&
       (gnu_debugdata_interface_ == nullptr ||
-       !gnu_debugdata_interface_->GetGlobalVariable(name, memory_address))) {
+       !gnu_debugdata_interface_->GetGlobalVariable(name, &vaddr))) {
     return false;
   }
 
-  // Adjust by the load bias.
-  if (*memory_address < load_bias_) {
-    return false;
+  // Check the .data section.
+  uint64_t vaddr_start = interface_->data_vaddr_start();
+  if (vaddr >= vaddr_start && vaddr < interface_->data_vaddr_end()) {
+    *memory_offset = vaddr - vaddr_start + interface_->data_offset();
+    return true;
   }
 
-  *memory_address -= load_bias_;
-
-  // If this winds up in the dynamic section, then we might need to adjust
-  // the address.
-  uint64_t dynamic_end = interface_->dynamic_vaddr() + interface_->dynamic_size();
-  if (*memory_address >= interface_->dynamic_vaddr() && *memory_address < dynamic_end) {
-    if (interface_->dynamic_vaddr() > interface_->dynamic_offset()) {
-      *memory_address -= interface_->dynamic_vaddr() - interface_->dynamic_offset();
-    } else {
-      *memory_address += interface_->dynamic_offset() - interface_->dynamic_vaddr();
-    }
+  // Check the .dynamic section.
+  vaddr_start = interface_->dynamic_vaddr_start();
+  if (vaddr >= vaddr_start && vaddr < interface_->dynamic_vaddr_end()) {
+    *memory_offset = vaddr - vaddr_start + interface_->dynamic_offset();
+    return true;
   }
-  return true;
+
+  return false;
 }
 
 std::string Elf::GetBuildID() {
@@ -175,7 +173,12 @@
   if (!valid_) {
     return false;
   }
-  return regs->StepIfSignalHandler(rel_pc, this, process_memory);
+
+  // Convert the rel_pc to an elf_offset.
+  if (rel_pc < static_cast<uint64_t>(load_bias_)) {
+    return false;
+  }
+  return regs->StepIfSignalHandler(rel_pc - load_bias_, this, process_memory);
 }
 
 // The relative pc is always relative to the start of the map from which it comes.
@@ -229,7 +232,7 @@
 }
 
 bool Elf::IsValidPc(uint64_t pc) {
-  if (!valid_ || pc < load_bias_) {
+  if (!valid_ || (load_bias_ > 0 && pc < static_cast<uint64_t>(load_bias_))) {
     return false;
   }
 
@@ -299,7 +302,7 @@
   return interface.release();
 }
 
-uint64_t Elf::GetLoadBias(Memory* memory) {
+int64_t Elf::GetLoadBias(Memory* memory) {
   if (!IsValidElf(memory)) {
     return 0;
   }
diff --git a/libunwindstack/ElfInterface.cpp b/libunwindstack/ElfInterface.cpp
index dee8eb3..341275d 100644
--- a/libunwindstack/ElfInterface.cpp
+++ b/libunwindstack/ElfInterface.cpp
@@ -29,12 +29,12 @@
 #include <unwindstack/DwarfSection.h>
 #include <unwindstack/ElfInterface.h>
 #include <unwindstack/Log.h>
-#include <unwindstack/Memory.h>
 #include <unwindstack/Regs.h>
 
 #include "DwarfDebugFrame.h"
 #include "DwarfEhFrame.h"
 #include "DwarfEhFrameWithHdr.h"
+#include "MemoryBuffer.h"
 #include "Symbols.h"
 
 namespace unwindstack {
@@ -78,10 +78,31 @@
   CrcGenerateTable();
   Crc64GenerateTable();
 
-  std::vector<uint8_t> src(gnu_debugdata_size_);
-  if (!memory_->ReadFully(gnu_debugdata_offset_, src.data(), gnu_debugdata_size_)) {
-    gnu_debugdata_offset_ = 0;
-    gnu_debugdata_size_ = static_cast<uint64_t>(-1);
+  // Verify the request is not larger than the max size_t value.
+  if (gnu_debugdata_size_ > SIZE_MAX) {
+    return nullptr;
+  }
+  size_t initial_buffer_size;
+  if (__builtin_mul_overflow(5, gnu_debugdata_size_, &initial_buffer_size)) {
+    return nullptr;
+  }
+
+  size_t buffer_increment;
+  if (__builtin_mul_overflow(2, gnu_debugdata_size_, &buffer_increment)) {
+    return nullptr;
+  }
+
+  std::unique_ptr<uint8_t[]> src(new (std::nothrow) uint8_t[gnu_debugdata_size_]);
+  if (src.get() == nullptr) {
+    return nullptr;
+  }
+
+  std::unique_ptr<MemoryBuffer> dst(new MemoryBuffer);
+  if (!dst->Resize(initial_buffer_size)) {
+    return nullptr;
+  }
+
+  if (!memory_->ReadFully(gnu_debugdata_offset_, src.get(), gnu_debugdata_size_)) {
     return nullptr;
   }
 
@@ -89,21 +110,23 @@
   CXzUnpacker state;
   alloc.Alloc = [](ISzAllocPtr, size_t size) { return malloc(size); };
   alloc.Free = [](ISzAllocPtr, void* ptr) { return free(ptr); };
-
   XzUnpacker_Construct(&state, &alloc);
 
-  std::unique_ptr<MemoryBuffer> dst(new MemoryBuffer);
   int return_val;
   size_t src_offset = 0;
   size_t dst_offset = 0;
   ECoderStatus status;
-  dst->Resize(5 * gnu_debugdata_size_);
   do {
-    size_t src_remaining = src.size() - src_offset;
+    size_t src_remaining = gnu_debugdata_size_ - src_offset;
     size_t dst_remaining = dst->Size() - dst_offset;
-    if (dst_remaining < 2 * gnu_debugdata_size_) {
-      dst->Resize(dst->Size() + 2 * gnu_debugdata_size_);
-      dst_remaining += 2 * gnu_debugdata_size_;
+    if (dst_remaining < buffer_increment) {
+      size_t new_size;
+      if (__builtin_add_overflow(dst->Size(), buffer_increment, &new_size) ||
+          !dst->Resize(new_size)) {
+        XzUnpacker_Free(&state);
+        return nullptr;
+      }
+      dst_remaining += buffer_increment;
     }
     return_val = XzUnpacker_Code(&state, dst->GetPtr(dst_offset), &dst_remaining, &src[src_offset],
                                  &src_remaining, true, CODER_FINISH_ANY, &status);
@@ -112,22 +135,24 @@
   } while (return_val == SZ_OK && status == CODER_STATUS_NOT_FINISHED);
   XzUnpacker_Free(&state);
   if (return_val != SZ_OK || !XzUnpacker_IsStreamWasFinished(&state)) {
-    gnu_debugdata_offset_ = 0;
-    gnu_debugdata_size_ = static_cast<uint64_t>(-1);
     return nullptr;
   }
 
   // Shrink back down to the exact size.
-  dst->Resize(dst_offset);
+  if (!dst->Resize(dst_offset)) {
+    return nullptr;
+  }
 
   return dst.release();
 }
 
 template <typename AddressType>
-void ElfInterface::InitHeadersWithTemplate(uint64_t load_bias) {
+void ElfInterface::InitHeadersWithTemplate() {
   if (eh_frame_hdr_offset_ != 0) {
-    eh_frame_.reset(new DwarfEhFrameWithHdr<AddressType>(memory_));
-    if (!eh_frame_->Init(eh_frame_hdr_offset_, eh_frame_hdr_size_, load_bias)) {
+    DwarfEhFrameWithHdr<AddressType>* eh_frame_hdr = new DwarfEhFrameWithHdr<AddressType>(memory_);
+    eh_frame_.reset(eh_frame_hdr);
+    if (!eh_frame_hdr->EhFrameInit(eh_frame_offset_, eh_frame_size_, eh_frame_section_bias_) ||
+        !eh_frame_->Init(eh_frame_hdr_offset_, eh_frame_hdr_size_, eh_frame_hdr_section_bias_)) {
       eh_frame_.reset(nullptr);
     }
   }
@@ -136,21 +161,23 @@
     // If there is an eh_frame section without an eh_frame_hdr section,
     // or using the frame hdr object failed to init.
     eh_frame_.reset(new DwarfEhFrame<AddressType>(memory_));
-    if (!eh_frame_->Init(eh_frame_offset_, eh_frame_size_, load_bias)) {
+    if (!eh_frame_->Init(eh_frame_offset_, eh_frame_size_, eh_frame_section_bias_)) {
       eh_frame_.reset(nullptr);
     }
   }
 
   if (eh_frame_.get() == nullptr) {
     eh_frame_hdr_offset_ = 0;
+    eh_frame_hdr_section_bias_ = 0;
     eh_frame_hdr_size_ = static_cast<uint64_t>(-1);
     eh_frame_offset_ = 0;
+    eh_frame_section_bias_ = 0;
     eh_frame_size_ = static_cast<uint64_t>(-1);
   }
 
   if (debug_frame_offset_ != 0) {
     debug_frame_.reset(new DwarfDebugFrame<AddressType>(memory_));
-    if (!debug_frame_->Init(debug_frame_offset_, debug_frame_size_, load_bias)) {
+    if (!debug_frame_->Init(debug_frame_offset_, debug_frame_size_, debug_frame_section_bias_)) {
       debug_frame_.reset(nullptr);
       debug_frame_offset_ = 0;
       debug_frame_size_ = static_cast<uint64_t>(-1);
@@ -159,7 +186,7 @@
 }
 
 template <typename EhdrType, typename PhdrType, typename ShdrType>
-bool ElfInterface::ReadAllHeaders(uint64_t* load_bias) {
+bool ElfInterface::ReadAllHeaders(int64_t* load_bias) {
   EhdrType ehdr;
   if (!memory_->ReadFully(0, &ehdr, sizeof(ehdr))) {
     last_error_.code = ERROR_MEMORY_INVALID;
@@ -175,7 +202,7 @@
 }
 
 template <typename EhdrType, typename PhdrType>
-uint64_t ElfInterface::GetLoadBias(Memory* memory) {
+int64_t ElfInterface::GetLoadBias(Memory* memory) {
   EhdrType ehdr;
   if (!memory->ReadFully(0, &ehdr, sizeof(ehdr))) {
     return false;
@@ -187,16 +214,19 @@
     if (!memory->ReadFully(offset, &phdr, sizeof(phdr))) {
       return 0;
     }
-    if (phdr.p_type == PT_LOAD && phdr.p_offset == 0) {
-      return phdr.p_vaddr;
+
+    // Find the first executable load when looking for the load bias.
+    if (phdr.p_type == PT_LOAD && (phdr.p_flags & PF_X)) {
+      return static_cast<uint64_t>(phdr.p_vaddr) - phdr.p_offset;
     }
   }
   return 0;
 }
 
 template <typename EhdrType, typename PhdrType>
-void ElfInterface::ReadProgramHeaders(const EhdrType& ehdr, uint64_t* load_bias) {
+void ElfInterface::ReadProgramHeaders(const EhdrType& ehdr, int64_t* load_bias) {
   uint64_t offset = ehdr.e_phoff;
+  bool first_exec_load_header = true;
   for (size_t i = 0; i < ehdr.e_phnum; i++, offset += ehdr.e_phentsize) {
     PhdrType phdr;
     if (!memory_->ReadFully(offset, &phdr, sizeof(phdr))) {
@@ -212,22 +242,29 @@
 
       pt_loads_[phdr.p_offset] = LoadInfo{phdr.p_offset, phdr.p_vaddr,
                                           static_cast<size_t>(phdr.p_memsz)};
-      if (phdr.p_offset == 0) {
-        *load_bias = phdr.p_vaddr;
+      // Only set the load bias from the first executable load header.
+      if (first_exec_load_header) {
+        *load_bias = static_cast<uint64_t>(phdr.p_vaddr) - phdr.p_offset;
       }
+      first_exec_load_header = false;
       break;
     }
 
     case PT_GNU_EH_FRAME:
       // This is really the pointer to the .eh_frame_hdr section.
       eh_frame_hdr_offset_ = phdr.p_offset;
+      eh_frame_hdr_section_bias_ = static_cast<uint64_t>(phdr.p_vaddr) - phdr.p_offset;
       eh_frame_hdr_size_ = phdr.p_memsz;
       break;
 
     case PT_DYNAMIC:
       dynamic_offset_ = phdr.p_offset;
-      dynamic_vaddr_ = phdr.p_vaddr;
-      dynamic_size_ = phdr.p_memsz;
+      dynamic_vaddr_start_ = phdr.p_vaddr;
+      if (__builtin_add_overflow(dynamic_vaddr_start_, phdr.p_memsz, &dynamic_vaddr_end_)) {
+        dynamic_offset_ = 0;
+        dynamic_vaddr_start_ = 0;
+        dynamic_vaddr_end_ = 0;
+      }
       break;
 
     default:
@@ -335,24 +372,29 @@
       if (shdr.sh_name < sec_size) {
         std::string name;
         if (memory_->ReadString(sec_offset + shdr.sh_name, &name)) {
-          uint64_t* offset_ptr = nullptr;
-          uint64_t* size_ptr = nullptr;
           if (name == ".debug_frame") {
-            offset_ptr = &debug_frame_offset_;
-            size_ptr = &debug_frame_size_;
+            debug_frame_offset_ = shdr.sh_offset;
+            debug_frame_size_ = shdr.sh_size;
+            debug_frame_section_bias_ = static_cast<uint64_t>(shdr.sh_addr) - shdr.sh_offset;
           } else if (name == ".gnu_debugdata") {
-            offset_ptr = &gnu_debugdata_offset_;
-            size_ptr = &gnu_debugdata_size_;
+            gnu_debugdata_offset_ = shdr.sh_offset;
+            gnu_debugdata_size_ = shdr.sh_size;
           } else if (name == ".eh_frame") {
-            offset_ptr = &eh_frame_offset_;
-            size_ptr = &eh_frame_size_;
+            eh_frame_offset_ = shdr.sh_offset;
+            eh_frame_section_bias_ = static_cast<uint64_t>(shdr.sh_addr) - shdr.sh_offset;
+            eh_frame_size_ = shdr.sh_size;
           } else if (eh_frame_hdr_offset_ == 0 && name == ".eh_frame_hdr") {
-            offset_ptr = &eh_frame_hdr_offset_;
-            size_ptr = &eh_frame_hdr_size_;
-          }
-          if (offset_ptr != nullptr) {
-            *offset_ptr = shdr.sh_offset;
-            *size_ptr = shdr.sh_size;
+            eh_frame_hdr_offset_ = shdr.sh_offset;
+            eh_frame_hdr_section_bias_ = static_cast<uint64_t>(shdr.sh_addr) - shdr.sh_offset;
+            eh_frame_hdr_size_ = shdr.sh_size;
+          } else if (name == ".data") {
+            data_offset_ = shdr.sh_offset;
+            data_vaddr_start_ = shdr.sh_addr;
+            if (__builtin_add_overflow(data_vaddr_start_, shdr.sh_size, &data_vaddr_end_)) {
+              data_offset_ = 0;
+              data_vaddr_start_ = 0;
+              data_vaddr_end_ = 0;
+            }
           }
         }
       }
@@ -391,7 +433,7 @@
   // Find the soname location from the dynamic headers section.
   DynType dyn;
   uint64_t offset = dynamic_offset_;
-  uint64_t max_offset = offset + dynamic_size_;
+  uint64_t max_offset = offset + dynamic_vaddr_end_ - dynamic_vaddr_start_;
   for (uint64_t offset = dynamic_offset_; offset < max_offset; offset += sizeof(DynType)) {
     if (!memory_->ReadFully(offset, &dyn, sizeof(dyn))) {
       last_error_.code = ERROR_MEMORY_INVALID;
@@ -634,16 +676,14 @@
 }
 
 // Instantiate all of the needed template functions.
-template void ElfInterface::InitHeadersWithTemplate<uint32_t>(uint64_t);
-template void ElfInterface::InitHeadersWithTemplate<uint64_t>(uint64_t);
+template void ElfInterface::InitHeadersWithTemplate<uint32_t>();
+template void ElfInterface::InitHeadersWithTemplate<uint64_t>();
 
-template bool ElfInterface::ReadAllHeaders<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr>(uint64_t*);
-template bool ElfInterface::ReadAllHeaders<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr>(uint64_t*);
+template bool ElfInterface::ReadAllHeaders<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr>(int64_t*);
+template bool ElfInterface::ReadAllHeaders<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr>(int64_t*);
 
-template void ElfInterface::ReadProgramHeaders<Elf32_Ehdr, Elf32_Phdr>(const Elf32_Ehdr&,
-                                                                       uint64_t*);
-template void ElfInterface::ReadProgramHeaders<Elf64_Ehdr, Elf64_Phdr>(const Elf64_Ehdr&,
-                                                                       uint64_t*);
+template void ElfInterface::ReadProgramHeaders<Elf32_Ehdr, Elf32_Phdr>(const Elf32_Ehdr&, int64_t*);
+template void ElfInterface::ReadProgramHeaders<Elf64_Ehdr, Elf64_Phdr>(const Elf64_Ehdr&, int64_t*);
 
 template void ElfInterface::ReadSectionHeaders<Elf32_Ehdr, Elf32_Shdr>(const Elf32_Ehdr&);
 template void ElfInterface::ReadSectionHeaders<Elf64_Ehdr, Elf64_Shdr>(const Elf64_Ehdr&);
@@ -665,8 +705,8 @@
 template void ElfInterface::GetMaxSizeWithTemplate<Elf32_Ehdr>(Memory*, uint64_t*);
 template void ElfInterface::GetMaxSizeWithTemplate<Elf64_Ehdr>(Memory*, uint64_t*);
 
-template uint64_t ElfInterface::GetLoadBias<Elf32_Ehdr, Elf32_Phdr>(Memory*);
-template uint64_t ElfInterface::GetLoadBias<Elf64_Ehdr, Elf64_Phdr>(Memory*);
+template int64_t ElfInterface::GetLoadBias<Elf32_Ehdr, Elf32_Phdr>(Memory*);
+template int64_t ElfInterface::GetLoadBias<Elf64_Ehdr, Elf64_Phdr>(Memory*);
 
 template std::string ElfInterface::ReadBuildIDFromMemory<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr>(
     Memory*);
diff --git a/libunwindstack/ElfInterfaceArm.cpp b/libunwindstack/ElfInterfaceArm.cpp
index 3dd5d54..76f2dc8 100644
--- a/libunwindstack/ElfInterfaceArm.cpp
+++ b/libunwindstack/ElfInterfaceArm.cpp
@@ -26,7 +26,7 @@
 
 namespace unwindstack {
 
-bool ElfInterfaceArm::Init(uint64_t* load_bias) {
+bool ElfInterfaceArm::Init(int64_t* load_bias) {
   if (!ElfInterface32::Init(load_bias)) {
     return false;
   }
diff --git a/libunwindstack/ElfInterfaceArm.h b/libunwindstack/ElfInterfaceArm.h
index 4c3a0c3..1d71cac 100644
--- a/libunwindstack/ElfInterfaceArm.h
+++ b/libunwindstack/ElfInterfaceArm.h
@@ -64,7 +64,7 @@
   iterator begin() { return iterator(this, 0); }
   iterator end() { return iterator(this, total_entries_); }
 
-  bool Init(uint64_t* load_bias) override;
+  bool Init(int64_t* section_bias) override;
 
   bool GetPrel31Addr(uint32_t offset, uint32_t* addr);
 
diff --git a/libunwindstack/Global.cpp b/libunwindstack/Global.cpp
index a20be00..ee6c8a5 100644
--- a/libunwindstack/Global.cpp
+++ b/libunwindstack/Global.cpp
@@ -39,28 +39,22 @@
   }
 }
 
-uint64_t Global::GetVariableOffset(MapInfo* info, const std::string& variable) {
-  if (!search_libs_.empty()) {
-    bool found = false;
-    const char* lib = basename(info->name.c_str());
-    for (const std::string& name : search_libs_) {
-      if (name == lib) {
-        found = true;
-        break;
-      }
-    }
-    if (!found) {
-      return 0;
-    }
+bool Global::Searchable(const std::string& name) {
+  if (search_libs_.empty()) {
+    return true;
   }
 
-  Elf* elf = info->GetElf(memory_, arch());
-  uint64_t ptr;
-  // Find first non-empty list (libraries might be loaded multiple times).
-  if (elf->GetGlobalVariable(variable, &ptr) && ptr != 0) {
-    return ptr + info->start;
+  if (name.empty()) {
+    return false;
   }
-  return 0;
+
+  const char* base_name = basename(name.c_str());
+  for (const std::string& lib : search_libs_) {
+    if (base_name == lib) {
+      return true;
+    }
+  }
+  return false;
 }
 
 void Global::FindAndReadVariable(Maps* maps, const char* var_str) {
@@ -76,27 +70,28 @@
   // This also works:
   //   f0000-f2000 0 r-- /system/lib/libc.so
   //   f2000-f3000 2000 rw- /system/lib/libc.so
-  MapInfo* map_start = nullptr;
+  // It is also possible to see empty maps after the read-only like so:
+  //   f0000-f1000 0 r-- /system/lib/libc.so
+  //   f1000-f2000 0 ---
+  //   f2000-f3000 1000 r-x /system/lib/libc.so
+  //   f3000-f4000 2000 rw- /system/lib/libc.so
+  MapInfo* map_zero = nullptr;
   for (const auto& info : *maps) {
-    if (map_start != nullptr) {
-      if (map_start->name == info->name) {
-        if (info->offset != 0 &&
-            (info->flags & (PROT_READ | PROT_WRITE)) == (PROT_READ | PROT_WRITE)) {
-          uint64_t ptr = GetVariableOffset(map_start, variable);
-          if (ptr != 0 && ReadVariableData(ptr)) {
+    if (info->offset != 0 && (info->flags & (PROT_READ | PROT_WRITE)) == (PROT_READ | PROT_WRITE) &&
+        map_zero != nullptr && Searchable(info->name) && info->name == map_zero->name) {
+      Elf* elf = map_zero->GetElf(memory_, arch());
+      uint64_t ptr;
+      if (elf->GetGlobalVariableOffset(variable, &ptr) && ptr != 0) {
+        uint64_t offset_end = info->offset + info->end - info->start;
+        if (ptr >= info->offset && ptr < offset_end) {
+          ptr = info->start + ptr - info->offset;
+          if (ReadVariableData(ptr)) {
             break;
-          } else {
-            // Failed to find the global variable, do not bother trying again.
-            map_start = nullptr;
           }
         }
-      } else {
-        map_start = nullptr;
       }
-    }
-    if (map_start == nullptr && (info->flags & PROT_READ) && info->offset == 0 &&
-        !info->name.empty()) {
-      map_start = info.get();
+    } else if (info->offset == 0 && !info->name.empty()) {
+      map_zero = info.get();
     }
   }
 }
diff --git a/libunwindstack/JitDebug.cpp b/libunwindstack/JitDebug.cpp
index 20bc4b9..8a85607 100644
--- a/libunwindstack/JitDebug.cpp
+++ b/libunwindstack/JitDebug.cpp
@@ -23,7 +23,8 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/JitDebug.h>
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
+
+#include "MemoryRange.h"
 
 // This implements the JIT Compilation Interface.
 // See https://sourceware.org/gdb/onlinedocs/gdb/JIT-Interface.html
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index 03658b4..31f3144 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <stdint.h>
 #include <sys/mman.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -27,19 +28,21 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/MapInfo.h>
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
+
+#include "MemoryFileAtOffset.h"
+#include "MemoryRange.h"
 
 namespace unwindstack {
 
 bool MapInfo::InitFileMemoryFromPreviousReadOnlyMap(MemoryFileAtOffset* memory) {
   // One last attempt, see if the previous map is read-only with the
   // same name and stretches across this map.
-  if (prev_map == nullptr || prev_map->flags != PROT_READ) {
+  if (prev_real_map == nullptr || prev_real_map->flags != PROT_READ) {
     return false;
   }
 
-  uint64_t map_size = end - prev_map->end;
-  if (!memory->Init(name, prev_map->offset, map_size)) {
+  uint64_t map_size = end - prev_real_map->end;
+  if (!memory->Init(name, prev_real_map->offset, map_size)) {
     return false;
   }
 
@@ -48,12 +51,12 @@
     return false;
   }
 
-  if (!memory->Init(name, prev_map->offset, max_size)) {
+  if (!memory->Init(name, prev_real_map->offset, max_size)) {
     return false;
   }
 
-  elf_offset = offset - prev_map->offset;
-  elf_start_offset = prev_map->offset;
+  elf_offset = offset - prev_real_map->offset;
+  elf_start_offset = prev_real_map->offset;
   return true;
 }
 
@@ -109,8 +112,8 @@
     // Need to check how to set the elf start offset. If this map is not
     // the r-x map of a r-- map, then use the real offset value. Otherwise,
     // use 0.
-    if (prev_map == nullptr || prev_map->offset != 0 || prev_map->flags != PROT_READ ||
-        prev_map->name != name) {
+    if (prev_real_map == nullptr || prev_real_map->offset != 0 ||
+        prev_real_map->flags != PROT_READ || prev_real_map->name != name) {
       elf_start_offset = offset;
     }
     return memory.release();
@@ -169,20 +172,20 @@
   // doesn't guarantee that this invariant will always be true. However,
   // if that changes, there is likely something else that will change and
   // break something.
-  if (offset == 0 || name.empty() || prev_map == nullptr || prev_map->name != name ||
-      prev_map->offset >= offset) {
+  if (offset == 0 || name.empty() || prev_real_map == nullptr || prev_real_map->name != name ||
+      prev_real_map->offset >= offset) {
     return nullptr;
   }
 
   // Make sure that relative pc values are corrected properly.
-  elf_offset = offset - prev_map->offset;
+  elf_offset = offset - prev_real_map->offset;
   // Use this as the elf start offset, otherwise, you always get offsets into
   // the r-x section, which is not quite the right information.
-  elf_start_offset = prev_map->offset;
+  elf_start_offset = prev_real_map->offset;
 
   MemoryRanges* ranges = new MemoryRanges;
-  ranges->Insert(
-      new MemoryRange(process_memory, prev_map->start, prev_map->end - prev_map->start, 0));
+  ranges->Insert(new MemoryRange(process_memory, prev_real_map->start,
+                                 prev_real_map->end - prev_real_map->start, 0));
   ranges->Insert(new MemoryRange(process_memory, start, end - start, elf_offset));
 
   memory_backed_elf = true;
@@ -231,15 +234,17 @@
     }
   }
 
-  // If there is a read-only map then a read-execute map that represents the
-  // same elf object, make sure the previous map is using the same elf
-  // object if it hasn't already been set.
-  if (prev_map != nullptr && elf_start_offset != offset && prev_map->offset == elf_start_offset &&
-      prev_map->name == name) {
-    std::lock_guard<std::mutex> guard(prev_map->mutex_);
-    if (prev_map->elf.get() == nullptr) {
-      prev_map->elf = elf;
-      prev_map->memory_backed_elf = memory_backed_elf;
+  if (!elf->valid()) {
+    elf_start_offset = offset;
+  } else if (prev_real_map != nullptr && elf_start_offset != offset &&
+             prev_real_map->offset == elf_start_offset && prev_real_map->name == name) {
+    // If there is a read-only map then a read-execute map that represents the
+    // same elf object, make sure the previous map is using the same elf
+    // object if it hasn't already been set.
+    std::lock_guard<std::mutex> guard(prev_real_map->mutex_);
+    if (prev_real_map->elf.get() == nullptr) {
+      prev_real_map->elf = elf;
+      prev_real_map->memory_backed_elf = memory_backed_elf;
     }
   }
   return elf.get();
@@ -259,8 +264,8 @@
 }
 
 uint64_t MapInfo::GetLoadBias(const std::shared_ptr<Memory>& process_memory) {
-  uint64_t cur_load_bias = load_bias.load();
-  if (cur_load_bias != static_cast<uint64_t>(-1)) {
+  int64_t cur_load_bias = load_bias.load();
+  if (cur_load_bias != INT64_MAX) {
     return cur_load_bias;
   }
 
@@ -296,7 +301,7 @@
 
 std::string MapInfo::GetBuildID() {
   uintptr_t id = build_id.load();
-  if (build_id != 0) {
+  if (id != 0) {
     return *reinterpret_cast<std::string*>(id);
   }
 
diff --git a/libunwindstack/Maps.cpp b/libunwindstack/Maps.cpp
index 5da73e4..670d904 100644
--- a/libunwindstack/Maps.cpp
+++ b/libunwindstack/Maps.cpp
@@ -60,6 +60,8 @@
 }
 
 bool Maps::Parse() {
+  MapInfo* prev_map = nullptr;
+  MapInfo* prev_real_map = nullptr;
   return android::procinfo::ReadMapFile(
       GetMapsFile(),
       [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t, const char* name) {
@@ -67,17 +69,24 @@
         if (strncmp(name, "/dev/", 5) == 0 && strncmp(name + 5, "ashmem/", 7) != 0) {
           flags |= unwindstack::MAPS_FLAGS_DEVICE_MAP;
         }
-        maps_.emplace_back(
-            new MapInfo(maps_.empty() ? nullptr : maps_.back().get(), start, end, pgoff,
-                        flags, name));
+        maps_.emplace_back(new MapInfo(prev_map, prev_real_map, start, end, pgoff, flags, name));
+        prev_map = maps_.back().get();
+        if (!prev_map->IsBlank()) {
+          prev_real_map = prev_map;
+        }
       });
 }
 
 void Maps::Add(uint64_t start, uint64_t end, uint64_t offset, uint64_t flags,
                const std::string& name, uint64_t load_bias) {
+  MapInfo* prev_map = maps_.empty() ? nullptr : maps_.back().get();
+  MapInfo* prev_real_map = prev_map;
+  while (prev_real_map != nullptr && prev_real_map->IsBlank()) {
+    prev_real_map = prev_real_map->prev_map;
+  }
+
   auto map_info =
-      std::make_unique<MapInfo>(maps_.empty() ? nullptr : maps_.back().get(), start, end, offset,
-                                flags, name);
+      std::make_unique<MapInfo>(prev_map, prev_real_map, start, end, offset, flags, name);
   map_info->load_bias = load_bias;
   maps_.emplace_back(std::move(map_info));
 }
@@ -89,14 +98,21 @@
 
   // Set the prev_map values on the info objects.
   MapInfo* prev_map = nullptr;
+  MapInfo* prev_real_map = nullptr;
   for (const auto& map_info : maps_) {
     map_info->prev_map = prev_map;
+    map_info->prev_real_map = prev_real_map;
     prev_map = map_info.get();
+    if (!prev_map->IsBlank()) {
+      prev_real_map = prev_map;
+    }
   }
 }
 
 bool BufferMaps::Parse() {
   std::string content(buffer_);
+  MapInfo* prev_map = nullptr;
+  MapInfo* prev_real_map = nullptr;
   return android::procinfo::ReadMapFileContent(
       &content[0],
       [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t, const char* name) {
@@ -104,9 +120,11 @@
         if (strncmp(name, "/dev/", 5) == 0 && strncmp(name + 5, "ashmem/", 7) != 0) {
           flags |= unwindstack::MAPS_FLAGS_DEVICE_MAP;
         }
-        maps_.emplace_back(
-            new MapInfo(maps_.empty() ? nullptr : maps_.back().get(), start, end, pgoff,
-                        flags, name));
+        maps_.emplace_back(new MapInfo(prev_map, prev_real_map, start, end, pgoff, flags, name));
+        prev_map = maps_.back().get();
+        if (!prev_map->IsBlank()) {
+          prev_real_map = prev_map;
+        }
       });
 }
 
@@ -139,6 +157,11 @@
       if (start == info->start && end == info->end && flags == info->flags && *name == info->name) {
         // No need to check
         search_map_idx = old_map_idx + 1;
+        if (new_map_idx + 1 < maps_.size()) {
+          maps_[new_map_idx + 1]->prev_map = info.get();
+          maps_[new_map_idx + 1]->prev_real_map =
+              info->IsBlank() ? info->prev_real_map : info.get();
+        }
         maps_[new_map_idx] = nullptr;
         total_entries--;
         break;
@@ -149,9 +172,10 @@
       }
 
       // Never delete these maps, they may be in use. The assumption is
-      // that there will only every be a handfull of these so waiting
+      // that there will only every be a handful of these so waiting
       // to destroy them is not too expensive.
       saved_maps_.emplace_back(std::move(info));
+      search_map_idx = old_map_idx + 1;
       maps_[old_map_idx] = nullptr;
       total_entries--;
     }
diff --git a/libunwindstack/Memory.cpp b/libunwindstack/Memory.cpp
index 9904fef..8de3d98 100644
--- a/libunwindstack/Memory.cpp
+++ b/libunwindstack/Memory.cpp
@@ -32,6 +32,14 @@
 #include <unwindstack/Memory.h>
 
 #include "Check.h"
+#include "MemoryBuffer.h"
+#include "MemoryCache.h"
+#include "MemoryFileAtOffset.h"
+#include "MemoryLocal.h"
+#include "MemoryOffline.h"
+#include "MemoryOfflineBuffer.h"
+#include "MemoryRange.h"
+#include "MemoryRemote.h"
 
 namespace unwindstack {
 
@@ -168,6 +176,16 @@
   return false;
 }
 
+std::unique_ptr<Memory> Memory::CreateFileMemory(const std::string& path, uint64_t offset) {
+  auto memory = std::make_unique<MemoryFileAtOffset>();
+
+  if (memory->Init(path, offset)) {
+    return memory;
+  }
+
+  return nullptr;
+}
+
 std::shared_ptr<Memory> Memory::CreateProcessMemory(pid_t pid) {
   if (pid == getpid()) {
     return std::shared_ptr<Memory>(new MemoryLocal());
@@ -182,13 +200,18 @@
   return std::shared_ptr<Memory>(new MemoryCache(new MemoryRemote(pid)));
 }
 
+std::shared_ptr<Memory> Memory::CreateOfflineMemory(const uint8_t* data, uint64_t start,
+                                                    uint64_t end) {
+  return std::shared_ptr<Memory>(new MemoryOfflineBuffer(data, start, end));
+}
+
 size_t MemoryBuffer::Read(uint64_t addr, void* dst, size_t size) {
-  if (addr >= raw_.size()) {
+  if (addr >= size_) {
     return 0;
   }
 
-  size_t bytes_left = raw_.size() - static_cast<size_t>(addr);
-  const unsigned char* actual_base = static_cast<const unsigned char*>(raw_.data()) + addr;
+  size_t bytes_left = size_ - static_cast<size_t>(addr);
+  const unsigned char* actual_base = static_cast<const unsigned char*>(raw_) + addr;
   size_t actual_len = std::min(bytes_left, size);
 
   memcpy(dst, actual_base, actual_len);
@@ -196,7 +219,7 @@
 }
 
 uint8_t* MemoryBuffer::GetPtr(size_t offset) {
-  if (offset < raw_.size()) {
+  if (offset < size_) {
     return &raw_[offset];
   }
   return nullptr;
diff --git a/libunwindstack/MemoryBuffer.h b/libunwindstack/MemoryBuffer.h
new file mode 100644
index 0000000..a91e59f
--- /dev/null
+++ b/libunwindstack/MemoryBuffer.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_BUFFER_H
+#define _LIBUNWINDSTACK_MEMORY_BUFFER_H
+
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryBuffer : public Memory {
+ public:
+  MemoryBuffer() = default;
+  virtual ~MemoryBuffer() { free(raw_); }
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  uint8_t* GetPtr(size_t offset);
+
+  bool Resize(size_t size) {
+    raw_ = reinterpret_cast<uint8_t*>(realloc(raw_, size));
+    if (raw_ == nullptr) {
+      size_ = 0;
+      return false;
+    }
+    size_ = size;
+    return true;
+  }
+
+  uint64_t Size() { return size_; }
+
+ private:
+  uint8_t* raw_ = nullptr;
+  size_t size_ = 0;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_BUFFER_H
diff --git a/libunwindstack/MemoryCache.h b/libunwindstack/MemoryCache.h
new file mode 100644
index 0000000..769d907
--- /dev/null
+++ b/libunwindstack/MemoryCache.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_CACHE_H
+#define _LIBUNWINDSTACK_MEMORY_CACHE_H
+
+#include <stdint.h>
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryCache : public Memory {
+ public:
+  MemoryCache(Memory* memory) : impl_(memory) {}
+  virtual ~MemoryCache() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  void Clear() override { cache_.clear(); }
+
+ private:
+  constexpr static size_t kCacheBits = 12;
+  constexpr static size_t kCacheMask = (1 << kCacheBits) - 1;
+  constexpr static size_t kCacheSize = 1 << kCacheBits;
+  std::unordered_map<uint64_t, uint8_t[kCacheSize]> cache_;
+
+  std::unique_ptr<Memory> impl_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_CACHE_H
diff --git a/libunwindstack/MemoryFileAtOffset.h b/libunwindstack/MemoryFileAtOffset.h
new file mode 100644
index 0000000..d136eb4
--- /dev/null
+++ b/libunwindstack/MemoryFileAtOffset.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
+#define _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
+
+#include <stdint.h>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryFileAtOffset : public Memory {
+ public:
+  MemoryFileAtOffset() = default;
+  virtual ~MemoryFileAtOffset();
+
+  bool Init(const std::string& file, uint64_t offset, uint64_t size = UINT64_MAX);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  size_t Size() { return size_; }
+
+  void Clear() override;
+
+ protected:
+  size_t size_ = 0;
+  size_t offset_ = 0;
+  uint8_t* data_ = nullptr;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
diff --git a/libunwindstack/MemoryLocal.h b/libunwindstack/MemoryLocal.h
new file mode 100644
index 0000000..29aaf12
--- /dev/null
+++ b/libunwindstack/MemoryLocal.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_LOCAL_H
+#define _LIBUNWINDSTACK_MEMORY_LOCAL_H
+
+#include <stdint.h>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryLocal : public Memory {
+ public:
+  MemoryLocal() = default;
+  virtual ~MemoryLocal() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_LOCAL_H
diff --git a/libunwindstack/MemoryOffline.h b/libunwindstack/MemoryOffline.h
new file mode 100644
index 0000000..789f1a2
--- /dev/null
+++ b/libunwindstack/MemoryOffline.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_OFFLINE_H
+#define _LIBUNWINDSTACK_MEMORY_OFFLINE_H
+
+#include <stdint.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <unwindstack/Memory.h>
+
+#include "MemoryRange.h"
+
+namespace unwindstack {
+
+class MemoryOffline : public Memory {
+ public:
+  MemoryOffline() = default;
+  virtual ~MemoryOffline() = default;
+
+  bool Init(const std::string& file, uint64_t offset);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  std::unique_ptr<MemoryRange> memory_;
+};
+
+class MemoryOfflineParts : public Memory {
+ public:
+  MemoryOfflineParts() = default;
+  virtual ~MemoryOfflineParts();
+
+  void Add(MemoryOffline* memory) { memories_.push_back(memory); }
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  std::vector<MemoryOffline*> memories_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_OFFLINE_H
diff --git a/libunwindstack/MemoryOfflineBuffer.h b/libunwindstack/MemoryOfflineBuffer.h
new file mode 100644
index 0000000..64c49a1
--- /dev/null
+++ b/libunwindstack/MemoryOfflineBuffer.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_OFFLINE_BUFFER_H
+#define _LIBUNWINDSTACK_MEMORY_OFFLINE_BUFFER_H
+
+#include <stdint.h>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryOfflineBuffer : public Memory {
+ public:
+  MemoryOfflineBuffer(const uint8_t* data, uint64_t start, uint64_t end);
+  virtual ~MemoryOfflineBuffer() = default;
+
+  void Reset(const uint8_t* data, uint64_t start, uint64_t end);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  const uint8_t* data_;
+  uint64_t start_;
+  uint64_t end_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_OFFLINE_BUFFER_H
diff --git a/libunwindstack/MemoryRange.h b/libunwindstack/MemoryRange.h
new file mode 100644
index 0000000..3b4ab5c
--- /dev/null
+++ b/libunwindstack/MemoryRange.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_RANGE_H
+#define _LIBUNWINDSTACK_MEMORY_RANGE_H
+
+#include <stdint.h>
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+// MemoryRange maps one address range onto another.
+// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset,
+// such that range.read(offset) is equivalent to underlying.read(src_begin).
+class MemoryRange : public Memory {
+ public:
+  MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length,
+              uint64_t offset);
+  virtual ~MemoryRange() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  uint64_t offset() { return offset_; }
+  uint64_t length() { return length_; }
+
+ private:
+  std::shared_ptr<Memory> memory_;
+  uint64_t begin_;
+  uint64_t length_;
+  uint64_t offset_;
+};
+
+class MemoryRanges : public Memory {
+ public:
+  MemoryRanges() = default;
+  virtual ~MemoryRanges() = default;
+
+  void Insert(MemoryRange* memory);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_RANGE_H
diff --git a/libunwindstack/MemoryRemote.h b/libunwindstack/MemoryRemote.h
new file mode 100644
index 0000000..db367d6
--- /dev/null
+++ b/libunwindstack/MemoryRemote.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_REMOTE_H
+#define _LIBUNWINDSTACK_MEMORY_REMOTE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <atomic>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryRemote : public Memory {
+ public:
+  MemoryRemote(pid_t pid) : pid_(pid), read_redirect_func_(0) {}
+  virtual ~MemoryRemote() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  pid_t pid() { return pid_; }
+
+ private:
+  pid_t pid_;
+  std::atomic_uintptr_t read_redirect_func_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_REMOTE_H
diff --git a/libunwindstack/RegsArm.cpp b/libunwindstack/RegsArm.cpp
index 885dc94..1b1f7eb 100644
--- a/libunwindstack/RegsArm.cpp
+++ b/libunwindstack/RegsArm.cpp
@@ -127,12 +127,12 @@
   return regs;
 }
 
-bool RegsArm::StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) {
+bool RegsArm::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) {
   uint32_t data;
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->ReadFully(rel_pc, &data, sizeof(data))) {
+  if (!elf_memory->ReadFully(elf_offset, &data, sizeof(data))) {
     return false;
   }
 
diff --git a/libunwindstack/RegsArm64.cpp b/libunwindstack/RegsArm64.cpp
index e9787aa..00b3367 100644
--- a/libunwindstack/RegsArm64.cpp
+++ b/libunwindstack/RegsArm64.cpp
@@ -100,19 +100,21 @@
   fn("x27", regs_[ARM64_REG_R27]);
   fn("x28", regs_[ARM64_REG_R28]);
   fn("x29", regs_[ARM64_REG_R29]);
-  fn("sp", regs_[ARM64_REG_SP]);
   fn("lr", regs_[ARM64_REG_LR]);
+  fn("sp", regs_[ARM64_REG_SP]);
   fn("pc", regs_[ARM64_REG_PC]);
+  fn("pst", regs_[ARM64_REG_PSTATE]);
 }
 
 Regs* RegsArm64::Read(void* remote_data) {
   arm64_user_regs* user = reinterpret_cast<arm64_user_regs*>(remote_data);
 
   RegsArm64* regs = new RegsArm64();
-  memcpy(regs->RawData(), &user->regs[0], (ARM64_REG_R31 + 1) * sizeof(uint64_t));
+  memcpy(regs->RawData(), &user->regs[0], (ARM64_REG_R30 + 1) * sizeof(uint64_t));
   uint64_t* reg_data = reinterpret_cast<uint64_t*>(regs->RawData());
-  reg_data[ARM64_REG_PC] = user->pc;
   reg_data[ARM64_REG_SP] = user->sp;
+  reg_data[ARM64_REG_PC] = user->pc;
+  reg_data[ARM64_REG_PSTATE] = user->pstate;
   return regs;
 }
 
@@ -124,12 +126,12 @@
   return regs;
 }
 
-bool RegsArm64::StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) {
+bool RegsArm64::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) {
   uint64_t data;
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->ReadFully(rel_pc, &data, sizeof(data))) {
+  if (!elf_memory->ReadFully(elf_offset, &data, sizeof(data))) {
     return false;
   }
 
diff --git a/libunwindstack/RegsMips.cpp b/libunwindstack/RegsMips.cpp
index f330fe0..ebefe42 100644
--- a/libunwindstack/RegsMips.cpp
+++ b/libunwindstack/RegsMips.cpp
@@ -129,13 +129,13 @@
   return regs;
 }
 
-bool RegsMips::StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) {
+bool RegsMips::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) {
   uint64_t data;
   uint64_t offset = 0;
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->ReadFully(rel_pc, &data, sizeof(data))) {
+  if (!elf_memory->ReadFully(elf_offset, &data, sizeof(data))) {
     return false;
   }
 
diff --git a/libunwindstack/RegsMips64.cpp b/libunwindstack/RegsMips64.cpp
index 3f67d92..be2fd22 100644
--- a/libunwindstack/RegsMips64.cpp
+++ b/libunwindstack/RegsMips64.cpp
@@ -127,12 +127,12 @@
   return regs;
 }
 
-bool RegsMips64::StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) {
+bool RegsMips64::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) {
   uint64_t data;
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->Read(rel_pc, &data, sizeof(data))) {
+  if (!elf_memory->Read(elf_offset, &data, sizeof(data))) {
     return false;
   }
 
diff --git a/libunwindstack/RegsX86.cpp b/libunwindstack/RegsX86.cpp
index 9bb39d1..5538fc0 100644
--- a/libunwindstack/RegsX86.cpp
+++ b/libunwindstack/RegsX86.cpp
@@ -119,12 +119,12 @@
   return regs;
 }
 
-bool RegsX86::StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) {
+bool RegsX86::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) {
   uint64_t data;
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->ReadFully(rel_pc, &data, sizeof(data))) {
+  if (!elf_memory->ReadFully(elf_offset, &data, sizeof(data))) {
     return false;
   }
 
diff --git a/libunwindstack/RegsX86_64.cpp b/libunwindstack/RegsX86_64.cpp
index 74cd1cb..5b9aa58 100644
--- a/libunwindstack/RegsX86_64.cpp
+++ b/libunwindstack/RegsX86_64.cpp
@@ -139,17 +139,17 @@
   return regs;
 }
 
-bool RegsX86_64::StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) {
+bool RegsX86_64::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) {
   uint64_t data;
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->ReadFully(rel_pc, &data, sizeof(data)) || data != 0x0f0000000fc0c748) {
+  if (!elf_memory->ReadFully(elf_offset, &data, sizeof(data)) || data != 0x0f0000000fc0c748) {
     return false;
   }
 
   uint16_t data2;
-  if (!elf_memory->ReadFully(rel_pc + 8, &data2, sizeof(data2)) || data2 != 0x0f05) {
+  if (!elf_memory->ReadFully(elf_offset + 8, &data2, sizeof(data2)) || data2 != 0x0f05) {
     return false;
   }
 
diff --git a/libunwindstack/TEST_MAPPING b/libunwindstack/TEST_MAPPING
new file mode 100644
index 0000000..909f897
--- /dev/null
+++ b/libunwindstack/TEST_MAPPING
@@ -0,0 +1,10 @@
+{
+  "presubmit": [
+    {
+      "name": "libunwindstack_unit_test"
+    },
+    {
+      "name": "CtsSimpleperfTestCases"
+    }
+  ]
+}
diff --git a/libunwindstack/Unwinder.cpp b/libunwindstack/Unwinder.cpp
index 37323dc..1bb0319 100644
--- a/libunwindstack/Unwinder.cpp
+++ b/libunwindstack/Unwinder.cpp
@@ -27,8 +27,6 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 
-#include <demangle.h>
-
 #include <unwindstack/Elf.h>
 #include <unwindstack/JitDebug.h>
 #include <unwindstack/MapInfo.h>
@@ -36,9 +34,10 @@
 #include <unwindstack/Memory.h>
 #include <unwindstack/Unwinder.h>
 
-#if !defined(NO_LIBDEXFILE_SUPPORT)
 #include <unwindstack/DexFiles.h>
-#endif
+
+// Use the demangler from libc++.
+extern "C" char* __cxa_demangle(const char*, char*, size_t*, int* status);
 
 namespace unwindstack {
 
@@ -63,7 +62,10 @@
   if (info != nullptr) {
     frame->map_start = info->start;
     frame->map_end = info->end;
-    frame->map_elf_start_offset = info->elf_start_offset;
+    // Since this is a dex file frame, the elf_start_offset is not set
+    // by any of the normal code paths. Use the offset of the map since
+    // that matches the actual offset.
+    frame->map_elf_start_offset = info->offset;
     frame->map_exact_offset = info->offset;
     frame->map_load_bias = info->load_bias;
     frame->map_flags = info->flags;
@@ -80,7 +82,7 @@
     return;
   }
 
-#if !defined(NO_LIBDEXFILE_SUPPORT)
+#if defined(DEXFILE_SUPPORT)
   if (dex_files_ == nullptr) {
     return;
   }
@@ -305,7 +307,7 @@
   }
 }
 
-std::string Unwinder::FormatFrame(const FrameData& frame) {
+std::string Unwinder::FormatFrame(const FrameData& frame) const {
   std::string data;
   if (regs_->Is32Bit()) {
     data += android::base::StringPrintf("  #%02zu pc %08" PRIx64, frame.num, frame.rel_pc);
@@ -327,7 +329,14 @@
   }
 
   if (!frame.function_name.empty()) {
-    data += " (" + demangle(frame.function_name.c_str());
+    char* demangled_name = __cxa_demangle(frame.function_name.c_str(), nullptr, nullptr, nullptr);
+    if (demangled_name == nullptr) {
+      data += " (" + frame.function_name;
+    } else {
+      data += " (";
+      data += demangled_name;
+      free(demangled_name);
+    }
     if (frame.function_offset != 0) {
       data += android::base::StringPrintf("+%" PRId64, frame.function_offset);
     }
@@ -344,7 +353,7 @@
   return data;
 }
 
-std::string Unwinder::FormatFrame(size_t frame_num) {
+std::string Unwinder::FormatFrame(size_t frame_num) const {
   if (frame_num >= frames_.size()) {
     return "";
   }
@@ -356,12 +365,10 @@
   jit_debug_ = jit_debug;
 }
 
-#if !defined(NO_LIBDEXFILE_SUPPORT)
 void Unwinder::SetDexFiles(DexFiles* dex_files, ArchEnum arch) {
   dex_files->SetArch(arch);
   dex_files_ = dex_files;
 }
-#endif
 
 bool UnwinderFromPid::Init(ArchEnum arch) {
   if (pid_ == getpid()) {
@@ -379,7 +386,7 @@
   jit_debug_ptr_.reset(new JitDebug(process_memory_));
   jit_debug_ = jit_debug_ptr_.get();
   SetJitDebug(jit_debug_, arch);
-#if !defined(NO_LIBDEXFILE_SUPPORT)
+#if defined(DEXFILE_SUPPORT)
   dex_files_ptr_.reset(new DexFiles(process_memory_));
   dex_files_ = dex_files_ptr_.get();
   SetDexFiles(dex_files_, arch);
diff --git a/libunwindstack/include/unwindstack/DwarfMemory.h b/libunwindstack/include/unwindstack/DwarfMemory.h
index 8dd8d2b..c45699a 100644
--- a/libunwindstack/include/unwindstack/DwarfMemory.h
+++ b/libunwindstack/include/unwindstack/DwarfMemory.h
@@ -49,8 +49,8 @@
   uint64_t cur_offset() { return cur_offset_; }
   void set_cur_offset(uint64_t cur_offset) { cur_offset_ = cur_offset; }
 
-  void set_pc_offset(uint64_t offset) { pc_offset_ = offset; }
-  void clear_pc_offset() { pc_offset_ = static_cast<uint64_t>(-1); }
+  void set_pc_offset(int64_t offset) { pc_offset_ = offset; }
+  void clear_pc_offset() { pc_offset_ = INT64_MAX; }
 
   void set_data_offset(uint64_t offset) { data_offset_ = offset; }
   void clear_data_offset() { data_offset_ = static_cast<uint64_t>(-1); }
@@ -65,7 +65,7 @@
   Memory* memory_;
   uint64_t cur_offset_ = 0;
 
-  uint64_t pc_offset_ = static_cast<uint64_t>(-1);
+  int64_t pc_offset_ = INT64_MAX;
   uint64_t data_offset_ = static_cast<uint64_t>(-1);
   uint64_t func_offset_ = static_cast<uint64_t>(-1);
   uint64_t text_offset_ = static_cast<uint64_t>(-1);
diff --git a/libunwindstack/include/unwindstack/DwarfSection.h b/libunwindstack/include/unwindstack/DwarfSection.h
index e9942de..c244749 100644
--- a/libunwindstack/include/unwindstack/DwarfSection.h
+++ b/libunwindstack/include/unwindstack/DwarfSection.h
@@ -86,7 +86,7 @@
   DwarfErrorCode LastErrorCode() { return last_error_.code; }
   uint64_t LastErrorAddress() { return last_error_.address; }
 
-  virtual bool Init(uint64_t offset, uint64_t size, uint64_t load_bias) = 0;
+  virtual bool Init(uint64_t offset, uint64_t size, int64_t section_bias) = 0;
 
   virtual bool Eval(const DwarfCie*, Memory*, const dwarf_loc_regs_t&, Regs*, bool*) = 0;
 
@@ -125,10 +125,16 @@
   DwarfSectionImpl(Memory* memory) : DwarfSection(memory) {}
   virtual ~DwarfSectionImpl() = default;
 
+  bool Init(uint64_t offset, uint64_t size, int64_t section_bias) override;
+
   const DwarfCie* GetCieFromOffset(uint64_t offset);
 
   const DwarfFde* GetFdeFromOffset(uint64_t offset);
 
+  const DwarfFde* GetFdeFromPc(uint64_t pc) override;
+
+  void GetFdes(std::vector<const DwarfFde*>* fdes) override;
+
   bool EvalRegister(const DwarfLocation* loc, uint32_t reg, AddressType* reg_ptr, void* info);
 
   bool Eval(const DwarfCie* cie, Memory* regular_memory, const dwarf_loc_regs_t& loc_regs,
@@ -139,6 +145,8 @@
   bool Log(uint8_t indent, uint64_t pc, const DwarfFde* fde) override;
 
  protected:
+  bool GetNextCieOrFde(const DwarfFde** fde_entry);
+
   bool FillInCieHeader(DwarfCie* cie);
 
   bool FillInCie(DwarfCie* cie);
@@ -150,43 +158,13 @@
   bool EvalExpression(const DwarfLocation& loc, Memory* regular_memory, AddressType* value,
                       RegsInfo<AddressType>* regs_info, bool* is_dex_pc);
 
-  uint64_t load_bias_ = 0;
-  uint64_t entries_offset_ = 0;
-  uint64_t entries_end_ = 0;
-  uint64_t pc_offset_ = 0;
-};
-
-template <typename AddressType>
-class DwarfSectionImplNoHdr : public DwarfSectionImpl<AddressType> {
- public:
-  // Add these so that the protected members of DwarfSectionImpl
-  // can be accessed without needing a this->.
-  using DwarfSectionImpl<AddressType>::memory_;
-  using DwarfSectionImpl<AddressType>::pc_offset_;
-  using DwarfSectionImpl<AddressType>::entries_offset_;
-  using DwarfSectionImpl<AddressType>::entries_end_;
-  using DwarfSectionImpl<AddressType>::last_error_;
-  using DwarfSectionImpl<AddressType>::load_bias_;
-  using DwarfSectionImpl<AddressType>::cie_entries_;
-  using DwarfSectionImpl<AddressType>::fde_entries_;
-  using DwarfSectionImpl<AddressType>::cie32_value_;
-  using DwarfSectionImpl<AddressType>::cie64_value_;
-
-  DwarfSectionImplNoHdr(Memory* memory) : DwarfSectionImpl<AddressType>(memory) {}
-  virtual ~DwarfSectionImplNoHdr() = default;
-
-  bool Init(uint64_t offset, uint64_t size, uint64_t load_bias) override;
-
-  const DwarfFde* GetFdeFromPc(uint64_t pc) override;
-
-  void GetFdes(std::vector<const DwarfFde*>* fdes) override;
-
- protected:
-  bool GetNextCieOrFde(DwarfFde** fde_entry);
-
   void InsertFde(const DwarfFde* fde);
 
+  int64_t section_bias_ = 0;
+  uint64_t entries_offset_ = 0;
+  uint64_t entries_end_ = 0;
   uint64_t next_entries_offset_ = 0;
+  uint64_t pc_offset_ = 0;
 
   std::map<uint64_t, std::pair<uint64_t, const DwarfFde*>> fdes_;
 };
diff --git a/libunwindstack/include/unwindstack/Elf.h b/libunwindstack/include/unwindstack/Elf.h
index 56bf318..472ed92 100644
--- a/libunwindstack/include/unwindstack/Elf.h
+++ b/libunwindstack/include/unwindstack/Elf.h
@@ -63,7 +63,7 @@
 
   bool GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset);
 
-  bool GetGlobalVariable(const std::string& name, uint64_t* memory_address);
+  bool GetGlobalVariableOffset(const std::string& name, uint64_t* memory_offset);
 
   uint64_t GetRelPc(uint64_t pc, const MapInfo* map_info);
 
@@ -75,7 +75,7 @@
 
   std::string GetBuildID();
 
-  uint64_t GetLoadBias() { return load_bias_; }
+  int64_t GetLoadBias() { return load_bias_; }
 
   bool IsValidPc(uint64_t pc);
 
@@ -101,7 +101,7 @@
 
   static bool GetInfo(Memory* memory, uint64_t* size);
 
-  static uint64_t GetLoadBias(Memory* memory);
+  static int64_t GetLoadBias(Memory* memory);
 
   static std::string GetBuildID(Memory* memory);
 
@@ -116,7 +116,7 @@
 
  protected:
   bool valid_ = false;
-  uint64_t load_bias_ = 0;
+  int64_t load_bias_ = 0;
   std::unique_ptr<ElfInterface> interface_;
   std::unique_ptr<Memory> memory_;
   uint32_t machine_type_;
diff --git a/libunwindstack/include/unwindstack/ElfInterface.h b/libunwindstack/include/unwindstack/ElfInterface.h
index dbd917d..0c39b23 100644
--- a/libunwindstack/include/unwindstack/ElfInterface.h
+++ b/libunwindstack/include/unwindstack/ElfInterface.h
@@ -52,9 +52,9 @@
   ElfInterface(Memory* memory) : memory_(memory) {}
   virtual ~ElfInterface();
 
-  virtual bool Init(uint64_t* load_bias) = 0;
+  virtual bool Init(int64_t* load_bias) = 0;
 
-  virtual void InitHeaders(uint64_t load_bias) = 0;
+  virtual void InitHeaders() = 0;
 
   virtual std::string GetSoname() = 0;
 
@@ -77,13 +77,19 @@
   void SetGnuDebugdataInterface(ElfInterface* interface) { gnu_debugdata_interface_ = interface; }
 
   uint64_t dynamic_offset() { return dynamic_offset_; }
-  uint64_t dynamic_vaddr() { return dynamic_vaddr_; }
-  uint64_t dynamic_size() { return dynamic_size_; }
+  uint64_t dynamic_vaddr_start() { return dynamic_vaddr_start_; }
+  uint64_t dynamic_vaddr_end() { return dynamic_vaddr_end_; }
+  uint64_t data_offset() { return data_offset_; }
+  uint64_t data_vaddr_start() { return data_vaddr_start_; }
+  uint64_t data_vaddr_end() { return data_vaddr_end_; }
   uint64_t eh_frame_hdr_offset() { return eh_frame_hdr_offset_; }
+  int64_t eh_frame_hdr_section_bias() { return eh_frame_hdr_section_bias_; }
   uint64_t eh_frame_hdr_size() { return eh_frame_hdr_size_; }
   uint64_t eh_frame_offset() { return eh_frame_offset_; }
+  int64_t eh_frame_section_bias() { return eh_frame_section_bias_; }
   uint64_t eh_frame_size() { return eh_frame_size_; }
   uint64_t debug_frame_offset() { return debug_frame_offset_; }
+  int64_t debug_frame_section_bias() { return debug_frame_section_bias_; }
   uint64_t debug_frame_size() { return debug_frame_size_; }
   uint64_t gnu_debugdata_offset() { return gnu_debugdata_offset_; }
   uint64_t gnu_debugdata_size() { return gnu_debugdata_size_; }
@@ -98,20 +104,20 @@
   uint64_t LastErrorAddress() { return last_error_.address; }
 
   template <typename EhdrType, typename PhdrType>
-  static uint64_t GetLoadBias(Memory* memory);
+  static int64_t GetLoadBias(Memory* memory);
 
   template <typename EhdrType, typename ShdrType, typename NhdrType>
   static std::string ReadBuildIDFromMemory(Memory* memory);
 
  protected:
   template <typename AddressType>
-  void InitHeadersWithTemplate(uint64_t load_bias);
+  void InitHeadersWithTemplate();
 
   template <typename EhdrType, typename PhdrType, typename ShdrType>
-  bool ReadAllHeaders(uint64_t* load_bias);
+  bool ReadAllHeaders(int64_t* load_bias);
 
   template <typename EhdrType, typename PhdrType>
-  void ReadProgramHeaders(const EhdrType& ehdr, uint64_t* load_bias);
+  void ReadProgramHeaders(const EhdrType& ehdr, int64_t* load_bias);
 
   template <typename EhdrType, typename ShdrType>
   void ReadSectionHeaders(const EhdrType& ehdr);
@@ -138,16 +144,23 @@
 
   // Stored elf data.
   uint64_t dynamic_offset_ = 0;
-  uint64_t dynamic_vaddr_ = 0;
-  uint64_t dynamic_size_ = 0;
+  uint64_t dynamic_vaddr_start_ = 0;
+  uint64_t dynamic_vaddr_end_ = 0;
+
+  uint64_t data_offset_ = 0;
+  uint64_t data_vaddr_start_ = 0;
+  uint64_t data_vaddr_end_ = 0;
 
   uint64_t eh_frame_hdr_offset_ = 0;
+  int64_t eh_frame_hdr_section_bias_ = 0;
   uint64_t eh_frame_hdr_size_ = 0;
 
   uint64_t eh_frame_offset_ = 0;
+  int64_t eh_frame_section_bias_ = 0;
   uint64_t eh_frame_size_ = 0;
 
   uint64_t debug_frame_offset_ = 0;
+  int64_t debug_frame_section_bias_ = 0;
   uint64_t debug_frame_size_ = 0;
 
   uint64_t gnu_debugdata_offset_ = 0;
@@ -175,13 +188,11 @@
   ElfInterface32(Memory* memory) : ElfInterface(memory) {}
   virtual ~ElfInterface32() = default;
 
-  bool Init(uint64_t* load_bias) override {
+  bool Init(int64_t* load_bias) override {
     return ElfInterface::ReadAllHeaders<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr>(load_bias);
   }
 
-  void InitHeaders(uint64_t load_bias) override {
-    ElfInterface::InitHeadersWithTemplate<uint32_t>(load_bias);
-  }
+  void InitHeaders() override { ElfInterface::InitHeadersWithTemplate<uint32_t>(); }
 
   std::string GetSoname() override { return ElfInterface::GetSonameWithTemplate<Elf32_Dyn>(); }
 
@@ -205,13 +216,11 @@
   ElfInterface64(Memory* memory) : ElfInterface(memory) {}
   virtual ~ElfInterface64() = default;
 
-  bool Init(uint64_t* load_bias) override {
+  bool Init(int64_t* load_bias) override {
     return ElfInterface::ReadAllHeaders<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr>(load_bias);
   }
 
-  void InitHeaders(uint64_t load_bias) override {
-    ElfInterface::InitHeadersWithTemplate<uint64_t>(load_bias);
-  }
+  void InitHeaders() override { ElfInterface::InitHeadersWithTemplate<uint64_t>(); }
 
   std::string GetSoname() override { return ElfInterface::GetSonameWithTemplate<Elf64_Dyn>(); }
 
diff --git a/libunwindstack/include/unwindstack/Global.h b/libunwindstack/include/unwindstack/Global.h
index a7e6c15..b9bb141 100644
--- a/libunwindstack/include/unwindstack/Global.h
+++ b/libunwindstack/include/unwindstack/Global.h
@@ -45,7 +45,7 @@
   ArchEnum arch() { return arch_; }
 
  protected:
-  uint64_t GetVariableOffset(MapInfo* info, const std::string& variable);
+  bool Searchable(const std::string& name);
   void FindAndReadVariable(Maps* maps, const char* variable);
 
   virtual bool ReadVariableData(uint64_t offset) = 0;
diff --git a/libunwindstack/include/unwindstack/MachineArm64.h b/libunwindstack/include/unwindstack/MachineArm64.h
index e8b778b..e953335 100644
--- a/libunwindstack/include/unwindstack/MachineArm64.h
+++ b/libunwindstack/include/unwindstack/MachineArm64.h
@@ -55,6 +55,7 @@
   ARM64_REG_R30,
   ARM64_REG_R31,
   ARM64_REG_PC,
+  ARM64_REG_PSTATE,
   ARM64_REG_LAST,
 
   ARM64_REG_SP = ARM64_REG_R31,
diff --git a/libunwindstack/include/unwindstack/MapInfo.h b/libunwindstack/include/unwindstack/MapInfo.h
index 025fd98..052e79f 100644
--- a/libunwindstack/include/unwindstack/MapInfo.h
+++ b/libunwindstack/include/unwindstack/MapInfo.h
@@ -25,30 +25,33 @@
 #include <string>
 
 #include <unwindstack/Elf.h>
-#include <unwindstack/Memory.h>
 
 namespace unwindstack {
 
+class MemoryFileAtOffset;
+
 struct MapInfo {
-  MapInfo(MapInfo* map_info, uint64_t start, uint64_t end, uint64_t offset, uint64_t flags,
-          const char* name)
+  MapInfo(MapInfo* prev_map, MapInfo* prev_real_map, uint64_t start, uint64_t end, uint64_t offset,
+          uint64_t flags, const char* name)
       : start(start),
         end(end),
         offset(offset),
         flags(flags),
         name(name),
-        prev_map(map_info),
-        load_bias(static_cast<uint64_t>(-1)),
+        prev_map(prev_map),
+        prev_real_map(prev_real_map),
+        load_bias(INT64_MAX),
         build_id(0) {}
-  MapInfo(MapInfo* map_info, uint64_t start, uint64_t end, uint64_t offset, uint64_t flags,
-          const std::string& name)
+  MapInfo(MapInfo* prev_map, MapInfo* prev_real_map, uint64_t start, uint64_t end, uint64_t offset,
+          uint64_t flags, const std::string& name)
       : start(start),
         end(end),
         offset(offset),
         flags(flags),
         name(name),
-        prev_map(map_info),
-        load_bias(static_cast<uint64_t>(-1)),
+        prev_map(prev_map),
+        prev_real_map(prev_real_map),
+        load_bias(INT64_MAX),
         build_id(0) {}
   ~MapInfo();
 
@@ -58,17 +61,28 @@
   uint16_t flags = 0;
   std::string name;
   std::shared_ptr<Elf> elf;
+  // The offset of the beginning of this mapping to the beginning of the
+  // ELF file.
+  // elf_offset == offset - elf_start_offset.
   // This value is only non-zero if the offset is non-zero but there is
   // no elf signature found at that offset.
   uint64_t elf_offset = 0;
-  // This value is the offset from the map in memory that is the start
-  // of the elf. This is not equal to offset when the linker splits
+  // This value is the offset into the file of the map in memory that is the
+  // start of the elf. This is not equal to offset when the linker splits
   // shared libraries into a read-only and read-execute map.
   uint64_t elf_start_offset = 0;
 
   MapInfo* prev_map = nullptr;
+  // This is the previous map that is not empty with a 0 offset. For
+  // example, this set of maps:
+  //  1000-2000  r--p 000000 00:00 0 libc.so
+  //  2000-3000  ---p 000000 00:00 0 libc.so
+  //  3000-4000  r-xp 003000 00:00 0 libc.so
+  // The last map's prev_map would point to the 2000-3000 map, while the
+  // prev_real_map would point to the 1000-2000 map.
+  MapInfo* prev_real_map = nullptr;
 
-  std::atomic_uint64_t load_bias;
+  std::atomic_int64_t load_bias;
 
   // This is a pointer to a new'd std::string.
   // Using an atomic value means that we don't need to lock and will
@@ -93,6 +107,8 @@
   // Returns the printable version of the build id (hex dump of raw data).
   std::string GetPrintableBuildID();
 
+  inline bool IsBlank() { return offset == 0 && flags == 0 && name.empty(); }
+
  private:
   MapInfo(const MapInfo&) = delete;
   void operator=(const MapInfo&) = delete;
diff --git a/libunwindstack/include/unwindstack/Maps.h b/libunwindstack/include/unwindstack/Maps.h
index 1784394..e53f367 100644
--- a/libunwindstack/include/unwindstack/Maps.h
+++ b/libunwindstack/include/unwindstack/Maps.h
@@ -105,7 +105,7 @@
 
   const std::string GetMapsFile() const override;
 
- private:
+ protected:
   std::vector<std::unique_ptr<MapInfo>> saved_maps_;
 };
 
diff --git a/libunwindstack/include/unwindstack/Memory.h b/libunwindstack/include/unwindstack/Memory.h
index b3beb6e..3106564 100644
--- a/libunwindstack/include/unwindstack/Memory.h
+++ b/libunwindstack/include/unwindstack/Memory.h
@@ -21,12 +21,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <atomic>
-#include <map>
 #include <memory>
 #include <string>
-#include <unordered_map>
-#include <vector>
 
 namespace unwindstack {
 
@@ -37,6 +33,9 @@
 
   static std::shared_ptr<Memory> CreateProcessMemory(pid_t pid);
   static std::shared_ptr<Memory> CreateProcessMemoryCached(pid_t pid);
+  static std::shared_ptr<Memory> CreateOfflineMemory(const uint8_t* data, uint64_t start,
+                                                     uint64_t end);
+  static std::unique_ptr<Memory> CreateFileMemory(const std::string& path, uint64_t offset);
 
   virtual bool ReadString(uint64_t addr, std::string* string, uint64_t max_read = UINT64_MAX);
 
@@ -55,157 +54,6 @@
   }
 };
 
-class MemoryCache : public Memory {
- public:
-  MemoryCache(Memory* memory) : impl_(memory) {}
-  virtual ~MemoryCache() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  void Clear() override { cache_.clear(); }
-
- private:
-  constexpr static size_t kCacheBits = 12;
-  constexpr static size_t kCacheMask = (1 << kCacheBits) - 1;
-  constexpr static size_t kCacheSize = 1 << kCacheBits;
-  std::unordered_map<uint64_t, uint8_t[kCacheSize]> cache_;
-
-  std::unique_ptr<Memory> impl_;
-};
-
-class MemoryBuffer : public Memory {
- public:
-  MemoryBuffer() = default;
-  virtual ~MemoryBuffer() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  uint8_t* GetPtr(size_t offset);
-
-  void Resize(size_t size) { raw_.resize(size); }
-
-  uint64_t Size() { return raw_.size(); }
-
- private:
-  std::vector<uint8_t> raw_;
-};
-
-class MemoryFileAtOffset : public Memory {
- public:
-  MemoryFileAtOffset() = default;
-  virtual ~MemoryFileAtOffset();
-
-  bool Init(const std::string& file, uint64_t offset, uint64_t size = UINT64_MAX);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  size_t Size() { return size_; }
-
-  void Clear() override;
-
- protected:
-  size_t size_ = 0;
-  size_t offset_ = 0;
-  uint8_t* data_ = nullptr;
-};
-
-class MemoryRemote : public Memory {
- public:
-  MemoryRemote(pid_t pid) : pid_(pid), read_redirect_func_(0) {}
-  virtual ~MemoryRemote() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  pid_t pid() { return pid_; }
-
- private:
-  pid_t pid_;
-  std::atomic_uintptr_t read_redirect_func_;
-};
-
-class MemoryLocal : public Memory {
- public:
-  MemoryLocal() = default;
-  virtual ~MemoryLocal() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-};
-
-// MemoryRange maps one address range onto another.
-// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset,
-// such that range.read(offset) is equivalent to underlying.read(src_begin).
-class MemoryRange : public Memory {
- public:
-  MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length,
-              uint64_t offset);
-  virtual ~MemoryRange() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  uint64_t offset() { return offset_; }
-  uint64_t length() { return length_; }
-
- private:
-  std::shared_ptr<Memory> memory_;
-  uint64_t begin_;
-  uint64_t length_;
-  uint64_t offset_;
-};
-
-class MemoryRanges : public Memory {
- public:
-  MemoryRanges() = default;
-  virtual ~MemoryRanges() = default;
-
-  void Insert(MemoryRange* memory);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_;
-};
-
-class MemoryOffline : public Memory {
- public:
-  MemoryOffline() = default;
-  virtual ~MemoryOffline() = default;
-
-  bool Init(const std::string& file, uint64_t offset);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  std::unique_ptr<MemoryRange> memory_;
-};
-
-class MemoryOfflineBuffer : public Memory {
- public:
-  MemoryOfflineBuffer(const uint8_t* data, uint64_t start, uint64_t end);
-  virtual ~MemoryOfflineBuffer() = default;
-
-  void Reset(const uint8_t* data, uint64_t start, uint64_t end);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  const uint8_t* data_;
-  uint64_t start_;
-  uint64_t end_;
-};
-
-class MemoryOfflineParts : public Memory {
- public:
-  MemoryOfflineParts() = default;
-  virtual ~MemoryOfflineParts();
-
-  void Add(MemoryOffline* memory) { memories_.push_back(memory); }
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  std::vector<MemoryOffline*> memories_;
-};
-
 }  // namespace unwindstack
 
 #endif  // _LIBUNWINDSTACK_MEMORY_H
diff --git a/libunwindstack/include/unwindstack/Regs.h b/libunwindstack/include/unwindstack/Regs.h
index 1c2a81c..4f761b4 100644
--- a/libunwindstack/include/unwindstack/Regs.h
+++ b/libunwindstack/include/unwindstack/Regs.h
@@ -66,7 +66,7 @@
 
   virtual uint64_t GetPcAdjustment(uint64_t rel_pc, Elf* elf) = 0;
 
-  virtual bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) = 0;
+  virtual bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) = 0;
 
   virtual bool SetPcFromReturnAddress(Memory* process_memory) = 0;
 
diff --git a/libunwindstack/include/unwindstack/RegsArm.h b/libunwindstack/include/unwindstack/RegsArm.h
index 44f6744..aa029be 100644
--- a/libunwindstack/include/unwindstack/RegsArm.h
+++ b/libunwindstack/include/unwindstack/RegsArm.h
@@ -40,7 +40,7 @@
 
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
-  bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
+  bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) override;
 
   void IterateRegisters(std::function<void(const char*, uint64_t)>) override final;
 
diff --git a/libunwindstack/include/unwindstack/RegsArm64.h b/libunwindstack/include/unwindstack/RegsArm64.h
index a72f91f..5cd7e5b 100644
--- a/libunwindstack/include/unwindstack/RegsArm64.h
+++ b/libunwindstack/include/unwindstack/RegsArm64.h
@@ -40,7 +40,7 @@
 
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
-  bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
+  bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) override;
 
   void IterateRegisters(std::function<void(const char*, uint64_t)>) override final;
 
diff --git a/libunwindstack/include/unwindstack/RegsMips.h b/libunwindstack/include/unwindstack/RegsMips.h
index c9dd202..8164a15 100644
--- a/libunwindstack/include/unwindstack/RegsMips.h
+++ b/libunwindstack/include/unwindstack/RegsMips.h
@@ -40,7 +40,7 @@
 
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
-  bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
+  bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) override;
 
   void IterateRegisters(std::function<void(const char*, uint64_t)>) override final;
 
diff --git a/libunwindstack/include/unwindstack/RegsMips64.h b/libunwindstack/include/unwindstack/RegsMips64.h
index 7c42812..c982542 100644
--- a/libunwindstack/include/unwindstack/RegsMips64.h
+++ b/libunwindstack/include/unwindstack/RegsMips64.h
@@ -40,7 +40,7 @@
 
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
-  bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
+  bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) override;
 
   void IterateRegisters(std::function<void(const char*, uint64_t)>) override final;
 
diff --git a/libunwindstack/include/unwindstack/RegsX86.h b/libunwindstack/include/unwindstack/RegsX86.h
index d19e449..2323a4f 100644
--- a/libunwindstack/include/unwindstack/RegsX86.h
+++ b/libunwindstack/include/unwindstack/RegsX86.h
@@ -41,7 +41,7 @@
 
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
-  bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
+  bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) override;
 
   void SetFromUcontext(x86_ucontext_t* ucontext);
 
diff --git a/libunwindstack/include/unwindstack/RegsX86_64.h b/libunwindstack/include/unwindstack/RegsX86_64.h
index dc9a220..3e919a4 100644
--- a/libunwindstack/include/unwindstack/RegsX86_64.h
+++ b/libunwindstack/include/unwindstack/RegsX86_64.h
@@ -41,7 +41,7 @@
 
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
-  bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
+  bool StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* process_memory) override;
 
   void SetFromUcontext(x86_64_ucontext_t* ucontext);
 
diff --git a/libunwindstack/include/unwindstack/Unwinder.h b/libunwindstack/include/unwindstack/Unwinder.h
index 52b3578..67762c0 100644
--- a/libunwindstack/include/unwindstack/Unwinder.h
+++ b/libunwindstack/include/unwindstack/Unwinder.h
@@ -77,7 +77,7 @@
   void Unwind(const std::vector<std::string>* initial_map_names_to_skip = nullptr,
               const std::vector<std::string>* map_suffixes_to_ignore = nullptr);
 
-  size_t NumFrames() { return frames_.size(); }
+  size_t NumFrames() const { return frames_.size(); }
 
   const std::vector<FrameData>& frames() { return frames_; }
 
@@ -87,8 +87,8 @@
     return frames;
   }
 
-  std::string FormatFrame(size_t frame_num);
-  std::string FormatFrame(const FrameData& frame);
+  std::string FormatFrame(size_t frame_num) const;
+  std::string FormatFrame(const FrameData& frame) const;
 
   void SetJitDebug(JitDebug* jit_debug, ArchEnum arch);
 
@@ -107,9 +107,7 @@
 
   void SetDisplayBuildID(bool display_build_id) { display_build_id_ = display_build_id; }
 
-#if !defined(NO_LIBDEXFILE_SUPPORT)
   void SetDexFiles(DexFiles* dex_files, ArchEnum arch);
-#endif
 
   bool elf_from_memory_not_file() { return elf_from_memory_not_file_; }
 
@@ -128,9 +126,7 @@
   std::vector<FrameData> frames_;
   std::shared_ptr<Memory> process_memory_;
   JitDebug* jit_debug_ = nullptr;
-#if !defined(NO_LIBDEXFILE_SUPPORT)
   DexFiles* dex_files_ = nullptr;
-#endif
   bool resolve_names_ = true;
   bool embedded_soname_ = true;
   bool display_build_id_ = false;
@@ -151,9 +147,7 @@
   pid_t pid_;
   std::unique_ptr<Maps> maps_ptr_;
   std::unique_ptr<JitDebug> jit_debug_ptr_;
-#if !defined(NO_LIBDEXFILE_SUPPORT)
   std::unique_ptr<DexFiles> dex_files_ptr_;
-#endif
 };
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/ArmExidxDecodeTest.cpp b/libunwindstack/tests/ArmExidxDecodeTest.cpp
index 5f3d1ea..69a7816 100644
--- a/libunwindstack/tests/ArmExidxDecodeTest.cpp
+++ b/libunwindstack/tests/ArmExidxDecodeTest.cpp
@@ -1662,7 +1662,7 @@
   ASSERT_EQ(0x10U, (*exidx_->regs())[15]);
 }
 
-INSTANTIATE_TEST_CASE_P(, ArmExidxDecodeTest,
-                        ::testing::Values("logging", "register_logging", "no_logging"));
+INSTANTIATE_TEST_SUITE_P(Unwindstack, ArmExidxDecodeTest,
+                         ::testing::Values("logging", "register_logging", "no_logging"));
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DexFileTest.cpp b/libunwindstack/tests/DexFileTest.cpp
index 0149a42..dc935a3 100644
--- a/libunwindstack/tests/DexFileTest.cpp
+++ b/libunwindstack/tests/DexFileTest.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <malloc.h>
 #include <stdint.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -72,6 +73,37 @@
   EXPECT_TRUE(DexFileFromFile::Create(0x100, tf.path) != nullptr);
 }
 
+static constexpr size_t kNumLeakLoops = 5000;
+static constexpr size_t kMaxAllowedLeakBytes = 1024;
+
+static void CheckForLeak(size_t loop, size_t* first_allocated_bytes, size_t* last_allocated_bytes) {
+  size_t allocated_bytes = mallinfo().uordblks;
+  if (*first_allocated_bytes == 0) {
+    *first_allocated_bytes = allocated_bytes;
+  } else if (*last_allocated_bytes > *first_allocated_bytes) {
+    // Check that the total memory did not increase too much over the first loop.
+    ASSERT_LE(*last_allocated_bytes - *first_allocated_bytes, kMaxAllowedLeakBytes)
+        << "Failed in loop " << loop << " first_allocated_bytes " << *first_allocated_bytes
+        << " last_allocated_bytes " << *last_allocated_bytes;
+  }
+  *last_allocated_bytes = allocated_bytes;
+}
+
+TEST(DexFileTest, from_file_no_leak) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(sizeof(kDexData),
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
+
+  size_t first_allocated_bytes = 0;
+  size_t last_allocated_bytes = 0;
+  for (size_t i = 0; i < kNumLeakLoops; i++) {
+    EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) != nullptr);
+    ASSERT_NO_FATAL_FAILURE(CheckForLeak(i, &first_allocated_bytes, &last_allocated_bytes));
+  }
+}
+
 TEST(DexFileTest, from_memory_fail_too_small_for_header) {
   MemoryFake memory;
 
@@ -96,6 +128,19 @@
   EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") != nullptr);
 }
 
+TEST(DexFileTest, from_memory_no_leak) {
+  MemoryFake memory;
+
+  memory.SetMemory(0x1000, kDexData, sizeof(kDexData));
+
+  size_t first_allocated_bytes = 0;
+  size_t last_allocated_bytes = 0;
+  for (size_t i = 0; i < kNumLeakLoops; i++) {
+    EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") != nullptr);
+    ASSERT_NO_FATAL_FAILURE(CheckForLeak(i, &first_allocated_bytes, &last_allocated_bytes));
+  }
+}
+
 TEST(DexFileTest, create_using_file) {
   TemporaryFile tf;
   ASSERT_TRUE(tf.fd != -1);
@@ -105,7 +150,7 @@
             static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
 
   MemoryFake memory;
-  MapInfo info(nullptr, 0, 0x10000, 0, 0x5, tf.path);
+  MapInfo info(nullptr, nullptr, 0, 0x10000, 0, 0x5, tf.path);
   EXPECT_TRUE(DexFile::Create(0x500, &memory, &info) != nullptr);
 }
 
@@ -118,7 +163,7 @@
             static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
 
   MemoryFake memory;
-  MapInfo info(nullptr, 0x100, 0x10000, 0, 0x5, tf.path);
+  MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0, 0x5, tf.path);
   EXPECT_TRUE(DexFile::Create(0x600, &memory, &info) != nullptr);
 }
 
@@ -131,21 +176,21 @@
             static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
 
   MemoryFake memory;
-  MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, tf.path);
+  MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, tf.path);
   EXPECT_TRUE(DexFile::Create(0x400, &memory, &info) != nullptr);
 }
 
 TEST(DexFileTest, create_using_memory_empty_file) {
   MemoryFake memory;
   memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
-  MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, "");
+  MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "");
   EXPECT_TRUE(DexFile::Create(0x4000, &memory, &info) != nullptr);
 }
 
 TEST(DexFileTest, create_using_memory_file_does_not_exist) {
   MemoryFake memory;
   memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
-  MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, "/does/not/exist");
+  MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "/does/not/exist");
   EXPECT_TRUE(DexFile::Create(0x4000, &memory, &info) != nullptr);
 }
 
@@ -158,7 +203,7 @@
 
   MemoryFake memory;
   memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
-  MapInfo info(nullptr, 0x4000, 0x10000, 0x200, 0x5, "/does/not/exist");
+  MapInfo info(nullptr, nullptr, 0x4000, 0x10000, 0x200, 0x5, "/does/not/exist");
   std::unique_ptr<DexFile> dex_file = DexFile::Create(0x4000, &memory, &info);
   ASSERT_TRUE(dex_file != nullptr);
 
@@ -171,7 +216,7 @@
 TEST(DexFileTest, get_method) {
   MemoryFake memory;
   memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
-  MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, "");
+  MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "");
   std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
   ASSERT_TRUE(dex_file != nullptr);
 
@@ -189,7 +234,7 @@
 TEST(DexFileTest, get_method_empty) {
   MemoryFake memory;
   memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
-  MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, "");
+  MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "");
   std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
   ASSERT_TRUE(dex_file != nullptr);
 
diff --git a/libunwindstack/tests/DexFilesTest.cpp b/libunwindstack/tests/DexFilesTest.cpp
index 1ea9e5c..477cf8e 100644
--- a/libunwindstack/tests/DexFilesTest.cpp
+++ b/libunwindstack/tests/DexFilesTest.cpp
@@ -36,14 +36,18 @@
 
 class DexFilesTest : public ::testing::Test {
  protected:
-  void CreateFakeElf(MapInfo* map_info) {
+  void CreateFakeElf(MapInfo* map_info, uint64_t global_offset, uint64_t data_offset,
+                     uint64_t data_vaddr, uint64_t data_size) {
     MemoryFake* memory = new MemoryFake;
     ElfFake* elf = new ElfFake(memory);
     elf->FakeSetValid(true);
     ElfInterfaceFake* interface = new ElfInterfaceFake(memory);
     elf->FakeSetInterface(interface);
 
-    interface->FakeSetGlobalVariable("__dex_debug_descriptor", 0x800);
+    interface->FakeSetGlobalVariable("__dex_debug_descriptor", global_offset);
+    interface->FakeSetDataOffset(data_offset);
+    interface->FakeSetDataVaddrStart(data_vaddr);
+    interface->FakeSetDataVaddrEnd(data_vaddr + data_size);
     map_info->elf.reset(elf);
   }
 
@@ -54,29 +58,38 @@
     maps_.reset(
         new BufferMaps("1000-4000 ---s 00000000 00:00 0 /fake/elf\n"
                        "4000-6000 r--s 00000000 00:00 0 /fake/elf\n"
-                       "6000-8000 -wxs 00000000 00:00 0 /fake/elf\n"
+                       "6000-8000 -wxs 00002000 00:00 0 /fake/elf\n"
                        "a000-c000 r--p 00000000 00:00 0 /fake/elf2\n"
-                       "c000-f000 rw-p 00001000 00:00 0 /fake/elf2\n"
+                       "c000-f000 rw-p 00002000 00:00 0 /fake/elf2\n"
                        "f000-11000 r--p 00000000 00:00 0 /fake/elf3\n"
-                       "100000-110000 rw-p 0001000 00:00 0 /fake/elf3\n"
+                       "100000-110000 rw-p 00f1000 00:00 0 /fake/elf3\n"
                        "200000-210000 rw-p 0002000 00:00 0 /fake/elf3\n"
-                       "300000-400000 rw-p 0003000 00:00 0 /fake/elf3\n"));
+                       "300000-400000 rw-p 0003000 00:00 0 /fake/elf3\n"
+                       "500000-501000 r--p 0000000 00:00 0 /fake/elf4\n"
+                       "501000-502000 ---p 0000000 00:00 0\n"
+                       "503000-510000 rw-p 0003000 00:00 0 /fake/elf4\n"
+                       "510000-520000 rw-p 0010000 00:00 0 /fake/elf4\n"));
     ASSERT_TRUE(maps_->Parse());
 
     // Global variable in a section that is not readable.
     MapInfo* map_info = maps_->Get(kMapGlobalNonReadable);
     ASSERT_TRUE(map_info != nullptr);
-    CreateFakeElf(map_info);
+    CreateFakeElf(map_info, 0x2800, 0x2000, 0x2000, 0x3000);
 
     // Global variable not set by default.
     map_info = maps_->Get(kMapGlobalSetToZero);
     ASSERT_TRUE(map_info != nullptr);
-    CreateFakeElf(map_info);
+    CreateFakeElf(map_info, 0x2800, 0x2000, 0x2000, 0x3000);
 
     // Global variable set in this map.
     map_info = maps_->Get(kMapGlobal);
     ASSERT_TRUE(map_info != nullptr);
-    CreateFakeElf(map_info);
+    CreateFakeElf(map_info, 0xf1800, 0xf1000, 0xf1000, 0x10000);
+
+    // Global variable set in this map, but there is an empty map before rw map.
+    map_info = maps_->Get(kMapGlobalAfterEmpty);
+    ASSERT_TRUE(map_info != nullptr);
+    CreateFakeElf(map_info, 0x3800, 0x3000, 0x3000, 0xd000);
   }
 
   void SetUp() override {
@@ -98,6 +111,8 @@
   static constexpr size_t kMapGlobalRw = 6;
   static constexpr size_t kMapDexFileEntries = 7;
   static constexpr size_t kMapDexFiles = 8;
+  static constexpr size_t kMapGlobalAfterEmpty = 9;
+  static constexpr size_t kMapDexFilesAfterEmpty = 12;
 
   std::shared_ptr<Memory> process_memory_;
   MemoryFake* memory_;
@@ -156,7 +171,7 @@
   uint64_t method_offset = 0x124;
   MapInfo* info = maps_->Get(kMapDexFiles);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x100800, 0x200000);
   WriteEntry32(0x200000, 0, 0, 0x300000);
   WriteDex(0x300000);
 
@@ -172,7 +187,7 @@
   uint64_t method_offset = 0x124;
   MapInfo* info = maps_->Get(kMapDexFiles);
 
-  WriteDescriptor64(0xf800, 0x200000);
+  WriteDescriptor64(0x100800, 0x200000);
   WriteEntry64(0x200000, 0, 0, 0x301000);
   WriteDex(0x301000);
 
@@ -186,7 +201,7 @@
   uint64_t method_offset = 0x124;
   MapInfo* info = maps_->Get(kMapDexFiles);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x100800, 0x200000);
   WriteEntry32(0x200000, 0x200100, 0, 0x100000);
   WriteEntry32(0x200100, 0, 0x200000, 0x300000);
   WriteDex(0x300000);
@@ -203,7 +218,7 @@
   uint64_t method_offset = 0x124;
   MapInfo* info = maps_->Get(kMapDexFiles);
 
-  WriteDescriptor64(0xf800, 0x200000);
+  WriteDescriptor64(0x100800, 0x200000);
   WriteEntry64(0x200000, 0x200100, 0, 0x100000);
   WriteEntry64(0x200100, 0, 0x200000, 0x300000);
   WriteDex(0x300000);
@@ -218,7 +233,7 @@
   uint64_t method_offset = 0x124;
   MapInfo* info = maps_->Get(kMapDexFiles);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x100800, 0x200000);
   WriteEntry32(0x200000, 0, 0, 0x300000);
   WriteDex(0x300000);
 
@@ -238,7 +253,7 @@
   uint64_t method_offset = 0x124;
   MapInfo* info = maps_->Get(kMapDexFiles);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x100800, 0x200000);
   WriteEntry32(0x200000, 0x200100, 0, 0x100000);
   WriteEntry32(0x200100, 0, 0x200000, 0x300000);
   WriteDex(0x300000);
@@ -274,9 +289,9 @@
   MapInfo* info = maps_->Get(kMapDexFiles);
 
   // First global variable found, but value is zero.
-  WriteDescriptor32(0xa800, 0);
+  WriteDescriptor32(0xc800, 0);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x100800, 0x200000);
   WriteEntry32(0x200000, 0, 0, 0x300000);
   WriteDex(0x300000);
 
@@ -289,7 +304,7 @@
   dex_files_->SetArch(ARCH_ARM);
   method_name = "fail";
   method_offset = 0x123;
-  WriteDescriptor32(0xa800, 0x100000);
+  WriteDescriptor32(0xc800, 0x100000);
   dex_files_->GetMethodInformation(maps_.get(), info, 0x300100, &method_name, &method_offset);
   EXPECT_EQ("fail", method_name);
   EXPECT_EQ(0x123U, method_offset);
@@ -303,9 +318,9 @@
   MapInfo* info = maps_->Get(kMapDexFiles);
 
   // First global variable found, but value is zero.
-  WriteDescriptor64(0xa800, 0);
+  WriteDescriptor64(0xc800, 0);
 
-  WriteDescriptor64(0xf800, 0x200000);
+  WriteDescriptor64(0x100800, 0x200000);
   WriteEntry64(0x200000, 0, 0, 0x300000);
   WriteDex(0x300000);
 
@@ -318,10 +333,24 @@
   dex_files_->SetArch(ARCH_ARM64);
   method_name = "fail";
   method_offset = 0x123;
-  WriteDescriptor64(0xa800, 0x100000);
+  WriteDescriptor64(0xc800, 0x100000);
   dex_files_->GetMethodInformation(maps_.get(), info, 0x300100, &method_name, &method_offset);
   EXPECT_EQ("fail", method_name);
   EXPECT_EQ(0x123U, method_offset);
 }
 
+TEST_F(DexFilesTest, get_method_information_with_empty_map) {
+  std::string method_name = "nothing";
+  uint64_t method_offset = 0x124;
+  MapInfo* info = maps_->Get(kMapDexFilesAfterEmpty);
+
+  WriteDescriptor32(0x503800, 0x506000);
+  WriteEntry32(0x506000, 0, 0, 0x510000);
+  WriteDex(0x510000);
+
+  dex_files_->GetMethodInformation(maps_.get(), info, 0x510100, &method_name, &method_offset);
+  EXPECT_EQ("Main.<init>", method_name);
+  EXPECT_EQ(0U, method_offset);
+}
+
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfCfaLogTest.cpp b/libunwindstack/tests/DwarfCfaLogTest.cpp
index bb2e8f0..def4088 100644
--- a/libunwindstack/tests/DwarfCfaLogTest.cpp
+++ b/libunwindstack/tests/DwarfCfaLogTest.cpp
@@ -66,7 +66,7 @@
   DwarfCie cie_;
   DwarfFde fde_;
 };
-TYPED_TEST_CASE_P(DwarfCfaLogTest);
+TYPED_TEST_SUITE_P(DwarfCfaLogTest);
 
 // NOTE: All class variable references have to be prefaced with this->.
 
@@ -763,17 +763,17 @@
   ASSERT_EQ("", GetFakeLogBuf());
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfCfaLogTest, cfa_illegal, cfa_nop, cfa_offset, cfa_offset_extended,
-                           cfa_offset_extended_sf, cfa_restore, cfa_restore_extended, cfa_set_loc,
-                           cfa_advance_loc, cfa_advance_loc1, cfa_advance_loc2, cfa_advance_loc4,
-                           cfa_undefined, cfa_same, cfa_register, cfa_state,
-                           cfa_state_cfa_offset_restore, cfa_def_cfa, cfa_def_cfa_sf,
-                           cfa_def_cfa_register, cfa_def_cfa_offset, cfa_def_cfa_offset_sf,
-                           cfa_def_cfa_expression, cfa_expression, cfa_val_offset,
-                           cfa_val_offset_sf, cfa_val_expression, cfa_gnu_args_size,
-                           cfa_gnu_negative_offset_extended, cfa_register_override);
+REGISTER_TYPED_TEST_SUITE_P(DwarfCfaLogTest, cfa_illegal, cfa_nop, cfa_offset, cfa_offset_extended,
+                            cfa_offset_extended_sf, cfa_restore, cfa_restore_extended, cfa_set_loc,
+                            cfa_advance_loc, cfa_advance_loc1, cfa_advance_loc2, cfa_advance_loc4,
+                            cfa_undefined, cfa_same, cfa_register, cfa_state,
+                            cfa_state_cfa_offset_restore, cfa_def_cfa, cfa_def_cfa_sf,
+                            cfa_def_cfa_register, cfa_def_cfa_offset, cfa_def_cfa_offset_sf,
+                            cfa_def_cfa_expression, cfa_expression, cfa_val_offset,
+                            cfa_val_offset_sf, cfa_val_expression, cfa_gnu_args_size,
+                            cfa_gnu_negative_offset_extended, cfa_register_override);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfCfaLogTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfCfaLogTest, DwarfCfaLogTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfCfaLogTest, DwarfCfaLogTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfCfaTest.cpp b/libunwindstack/tests/DwarfCfaTest.cpp
index 7395b04..9c6ab05 100644
--- a/libunwindstack/tests/DwarfCfaTest.cpp
+++ b/libunwindstack/tests/DwarfCfaTest.cpp
@@ -64,7 +64,7 @@
   DwarfCie cie_;
   DwarfFde fde_;
 };
-TYPED_TEST_CASE_P(DwarfCfaTest);
+TYPED_TEST_SUITE_P(DwarfCfaTest);
 
 // NOTE: All test class variables need to be referenced as this->.
 
@@ -952,16 +952,17 @@
   ASSERT_EQ("", GetFakeLogBuf());
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfCfaTest, cfa_illegal, cfa_nop, cfa_offset, cfa_offset_extended,
-                           cfa_offset_extended_sf, cfa_restore, cfa_restore_extended, cfa_set_loc,
-                           cfa_advance_loc1, cfa_advance_loc2, cfa_advance_loc4, cfa_undefined,
-                           cfa_same, cfa_register, cfa_state, cfa_state_cfa_offset_restore,
-                           cfa_def_cfa, cfa_def_cfa_sf, cfa_def_cfa_register, cfa_def_cfa_offset,
-                           cfa_def_cfa_offset_sf, cfa_def_cfa_expression, cfa_expression,
-                           cfa_val_offset, cfa_val_offset_sf, cfa_val_expression, cfa_gnu_args_size,
-                           cfa_gnu_negative_offset_extended, cfa_register_override);
+REGISTER_TYPED_TEST_SUITE_P(DwarfCfaTest, cfa_illegal, cfa_nop, cfa_offset, cfa_offset_extended,
+                            cfa_offset_extended_sf, cfa_restore, cfa_restore_extended, cfa_set_loc,
+                            cfa_advance_loc1, cfa_advance_loc2, cfa_advance_loc4, cfa_undefined,
+                            cfa_same, cfa_register, cfa_state, cfa_state_cfa_offset_restore,
+                            cfa_def_cfa, cfa_def_cfa_sf, cfa_def_cfa_register, cfa_def_cfa_offset,
+                            cfa_def_cfa_offset_sf, cfa_def_cfa_expression, cfa_expression,
+                            cfa_val_offset, cfa_val_offset_sf, cfa_val_expression,
+                            cfa_gnu_args_size, cfa_gnu_negative_offset_extended,
+                            cfa_register_override);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfCfaTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfCfaTest, DwarfCfaTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfCfaTest, DwarfCfaTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfDebugFrameTest.cpp b/libunwindstack/tests/DwarfDebugFrameTest.cpp
index 120bd73..fac8a0e 100644
--- a/libunwindstack/tests/DwarfDebugFrameTest.cpp
+++ b/libunwindstack/tests/DwarfDebugFrameTest.cpp
@@ -44,7 +44,7 @@
   MemoryFake memory_;
   DwarfDebugFrame<TypeParam>* debug_frame_ = nullptr;
 };
-TYPED_TEST_CASE_P(DwarfDebugFrameTest);
+TYPED_TEST_SUITE_P(DwarfDebugFrameTest);
 
 // NOTE: All test class variables need to be referenced as this->.
 
@@ -754,16 +754,24 @@
   SetFde32(&this->memory_, 0x5400, 0xfc, 0, 0xa00, 0x100);
   // FDE 4 (0x100 - 0xb00)
   SetFde32(&this->memory_, 0x5500, 0xfc, 0, 0x150, 0xa00);
-  // FDE 5 (0x0 - 0x50)
-  SetFde32(&this->memory_, 0x5600, 0xfc, 0, 0, 0x50);
+  // FDE 5 (0x50 - 0xa0)
+  SetFde32(&this->memory_, 0x5600, 0xfc, 0, 0x50, 0x50);
+  // FDE 6 (0x0 - 0x50)
+  SetFde32(&this->memory_, 0x5700, 0xfc, 0, 0, 0x50);
 
-  this->debug_frame_->Init(0x5000, 0x700, 0);
+  this->debug_frame_->Init(0x5000, 0x800, 0);
 
   // Force reading all entries so no entries are found.
   const DwarfFde* fde = this->debug_frame_->GetFdeFromPc(0xfffff);
   ASSERT_TRUE(fde == nullptr);
 
-  //   0x0   - 0x50   FDE 5
+  //   0x50  - 0xa0  FDE 5
+  fde = this->debug_frame_->GetFdeFromPc(0x60);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x50U, fde->pc_start);
+  EXPECT_EQ(0xa0U, fde->pc_end);
+
+  //   0x0   - 0x50   FDE 6
   fde = this->debug_frame_->GetFdeFromPc(0x10);
   ASSERT_TRUE(fde != nullptr);
   EXPECT_EQ(0U, fde->pc_start);
@@ -812,7 +820,57 @@
   EXPECT_EQ(0xb50U, fde->pc_end);
 }
 
-REGISTER_TYPED_TEST_CASE_P(
+TYPED_TEST_P(DwarfDebugFrameTest, GetFdeFromPc_overlap) {
+  SetCie32(&this->memory_, 0x5000, 0xfc, std::vector<uint8_t>{1, '\0', 0, 0, 1});
+
+  // FDE 0 (0x100 - 0x200)
+  SetFde32(&this->memory_, 0x5100, 0xfc, 0, 0x100, 0x100);
+  // FDE 1 (0x50 - 0x550)
+  SetFde32(&this->memory_, 0x5200, 0xfc, 0, 0x50, 0x500);
+  // FDE 2 (0x00 - 0x800)
+  SetFde32(&this->memory_, 0x5300, 0xfc, 0, 0x0, 0x800);
+
+  this->debug_frame_->Init(0x5000, 0x400, 0);
+
+  // Force reading all entries so no entries are found.
+  const DwarfFde* fde = this->debug_frame_->GetFdeFromPc(0xfffff);
+  ASSERT_TRUE(fde == nullptr);
+
+  //   0x0  - 0x50  FDE 2
+  fde = this->debug_frame_->GetFdeFromPc(0x10);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x0U, fde->pc_start);
+  EXPECT_EQ(0x800U, fde->pc_end);
+
+  //   0x50  - 0x100  FDE 1
+  fde = this->debug_frame_->GetFdeFromPc(0x60);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x50U, fde->pc_start);
+  EXPECT_EQ(0x550U, fde->pc_end);
+
+  //   0x100 - 0x200  FDE 0
+  fde = this->debug_frame_->GetFdeFromPc(0x170);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x100U, fde->pc_start);
+  EXPECT_EQ(0x200U, fde->pc_end);
+
+  //   0x200 - 0x550  FDE 1
+  fde = this->debug_frame_->GetFdeFromPc(0x210);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x50U, fde->pc_start);
+  EXPECT_EQ(0x550U, fde->pc_end);
+
+  //   0x550 - 0x800  FDE 2
+  fde = this->debug_frame_->GetFdeFromPc(0x580);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x0U, fde->pc_start);
+  EXPECT_EQ(0x800U, fde->pc_end);
+
+  fde = this->debug_frame_->GetFdeFromPc(0x810);
+  ASSERT_TRUE(fde == nullptr);
+}
+
+REGISTER_TYPED_TEST_SUITE_P(
     DwarfDebugFrameTest, GetFdes32, GetFdes32_after_GetFdeFromPc, GetFdes32_not_in_section,
     GetFdeFromPc32, GetFdeFromPc32_reverse, GetFdeFromPc32_not_in_section, GetFdes64,
     GetFdes64_after_GetFdeFromPc, GetFdes64_not_in_section, GetFdeFromPc64, GetFdeFromPc64_reverse,
@@ -822,9 +880,9 @@
     GetCieFromOffset64_version4, GetCieFromOffset32_version5, GetCieFromOffset64_version5,
     GetCieFromOffset_version_invalid, GetCieFromOffset32_augment, GetCieFromOffset64_augment,
     GetFdeFromOffset32_augment, GetFdeFromOffset64_augment, GetFdeFromOffset32_lsda_address,
-    GetFdeFromOffset64_lsda_address, GetFdeFromPc_interleaved);
+    GetFdeFromOffset64_lsda_address, GetFdeFromPc_interleaved, GetFdeFromPc_overlap);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfDebugFrameTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfDebugFrameTest, DwarfDebugFrameTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfDebugFrameTest, DwarfDebugFrameTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfEhFrameTest.cpp b/libunwindstack/tests/DwarfEhFrameTest.cpp
index 9cac6e8..46a25a4 100644
--- a/libunwindstack/tests/DwarfEhFrameTest.cpp
+++ b/libunwindstack/tests/DwarfEhFrameTest.cpp
@@ -42,7 +42,7 @@
   MemoryFake memory_;
   DwarfEhFrame<TypeParam>* eh_frame_ = nullptr;
 };
-TYPED_TEST_CASE_P(DwarfEhFrameTest);
+TYPED_TEST_SUITE_P(DwarfEhFrameTest);
 
 // NOTE: All test class variables need to be referenced as this->.
 
@@ -125,9 +125,9 @@
   EXPECT_EQ(1U, cie->return_address_register);
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfEhFrameTest, GetFdeCieFromOffset32, GetFdeCieFromOffset64);
+REGISTER_TYPED_TEST_SUITE_P(DwarfEhFrameTest, GetFdeCieFromOffset32, GetFdeCieFromOffset64);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfEhFrameTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfEhFrameTest, DwarfEhFrameTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfEhFrameTest, DwarfEhFrameTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfEhFrameWithHdrTest.cpp b/libunwindstack/tests/DwarfEhFrameWithHdrTest.cpp
index be9e721..6aa3867 100644
--- a/libunwindstack/tests/DwarfEhFrameWithHdrTest.cpp
+++ b/libunwindstack/tests/DwarfEhFrameWithHdrTest.cpp
@@ -36,10 +36,8 @@
   ~TestDwarfEhFrameWithHdr() = default;
 
   void TestSetTableEncoding(uint8_t encoding) { this->table_encoding_ = encoding; }
-  void TestSetEntriesOffset(uint64_t offset) { this->entries_offset_ = offset; }
-  void TestSetEntriesEnd(uint64_t end) { this->entries_end_ = end; }
-  void TestSetEntriesDataOffset(uint64_t offset) { this->entries_data_offset_ = offset; }
-  void TestSetCurEntriesOffset(uint64_t offset) { this->cur_entries_offset_ = offset; }
+  void TestSetHdrEntriesOffset(uint64_t offset) { this->hdr_entries_offset_ = offset; }
+  void TestSetHdrEntriesDataOffset(uint64_t offset) { this->hdr_entries_data_offset_ = offset; }
   void TestSetTableEntrySize(size_t size) { this->table_entry_size_ = size; }
 
   void TestSetFdeCount(uint64_t count) { this->fde_count_ = count; }
@@ -48,15 +46,11 @@
   }
 
   uint8_t TestGetVersion() { return this->version_; }
-  uint8_t TestGetPtrEncoding() { return this->ptr_encoding_; }
-  uint64_t TestGetPtrOffset() { return this->ptr_offset_; }
   uint8_t TestGetTableEncoding() { return this->table_encoding_; }
   uint64_t TestGetTableEntrySize() { return this->table_entry_size_; }
   uint64_t TestGetFdeCount() { return this->fde_count_; }
-  uint64_t TestGetEntriesOffset() { return this->entries_offset_; }
-  uint64_t TestGetEntriesEnd() { return this->entries_end_; }
-  uint64_t TestGetEntriesDataOffset() { return this->entries_data_offset_; }
-  uint64_t TestGetCurEntriesOffset() { return this->cur_entries_offset_; }
+  uint64_t TestGetHdrEntriesOffset() { return this->hdr_entries_offset_; }
+  uint64_t TestGetHdrEntriesDataOffset() { return this->hdr_entries_data_offset_; }
 };
 
 template <typename TypeParam>
@@ -73,7 +67,7 @@
   MemoryFake memory_;
   TestDwarfEhFrameWithHdr<TypeParam>* eh_frame_ = nullptr;
 };
-TYPED_TEST_CASE_P(DwarfEhFrameWithHdrTest);
+TYPED_TEST_SUITE_P(DwarfEhFrameWithHdrTest);
 
 // NOTE: All test class variables need to be referenced as this->.
 
@@ -85,15 +79,11 @@
 
   ASSERT_TRUE(this->eh_frame_->Init(0x1000, 0x100, 0));
   EXPECT_EQ(1U, this->eh_frame_->TestGetVersion());
-  EXPECT_EQ(DW_EH_PE_udata2, this->eh_frame_->TestGetPtrEncoding());
   EXPECT_EQ(DW_EH_PE_sdata4, this->eh_frame_->TestGetTableEncoding());
   EXPECT_EQ(4U, this->eh_frame_->TestGetTableEntrySize());
   EXPECT_EQ(126U, this->eh_frame_->TestGetFdeCount());
-  EXPECT_EQ(0x500U, this->eh_frame_->TestGetPtrOffset());
-  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetEntriesOffset());
-  EXPECT_EQ(0x1100U, this->eh_frame_->TestGetEntriesEnd());
-  EXPECT_EQ(0x1000U, this->eh_frame_->TestGetEntriesDataOffset());
-  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetCurEntriesOffset());
+  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetHdrEntriesOffset());
+  EXPECT_EQ(0x1000U, this->eh_frame_->TestGetHdrEntriesDataOffset());
 
   // Verify a zero table entry size fails to init.
   this->memory_.SetData8(0x1003, 0x1);
@@ -137,17 +127,14 @@
   this->memory_.SetData32(0x140c, 0x200);
   this->memory_.SetData16(0x1410, 0);
 
+  ASSERT_TRUE(this->eh_frame_->EhFrameInit(0x1300, 0x200, 0x2000));
   ASSERT_TRUE(this->eh_frame_->Init(0x1000, 0x100, 0x2000));
   EXPECT_EQ(1U, this->eh_frame_->TestGetVersion());
-  EXPECT_EQ(DW_EH_PE_udata2, this->eh_frame_->TestGetPtrEncoding());
   EXPECT_EQ(0x1b, this->eh_frame_->TestGetTableEncoding());
   EXPECT_EQ(4U, this->eh_frame_->TestGetTableEntrySize());
   EXPECT_EQ(1U, this->eh_frame_->TestGetFdeCount());
-  EXPECT_EQ(0x500U, this->eh_frame_->TestGetPtrOffset());
-  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetEntriesOffset());
-  EXPECT_EQ(0x1100U, this->eh_frame_->TestGetEntriesEnd());
-  EXPECT_EQ(0x1000U, this->eh_frame_->TestGetEntriesDataOffset());
-  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetCurEntriesOffset());
+  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetHdrEntriesOffset());
+  EXPECT_EQ(0x1000U, this->eh_frame_->TestGetHdrEntriesDataOffset());
 
   const DwarfFde* fde = this->eh_frame_->GetFdeFromPc(0x4600);
   ASSERT_TRUE(fde != nullptr);
@@ -155,6 +142,115 @@
   EXPECT_EQ(0x4700U, fde->pc_end);
 }
 
+TYPED_TEST_P(DwarfEhFrameWithHdrTest, Init_non_zero_load_bias_different_from_eh_frame_bias) {
+  this->memory_.SetMemory(0x1000, std::vector<uint8_t>{0x1, DW_EH_PE_udata2, DW_EH_PE_udata4,
+                                                       DW_EH_PE_pcrel | DW_EH_PE_sdata4});
+  this->memory_.SetData16(0x1004, 0x500);
+  this->memory_.SetData32(0x1006, 1);
+  this->memory_.SetData32(0x100a, 0x2500);
+  this->memory_.SetData32(0x100e, 0x1400);
+
+  // CIE 32 information.
+  this->memory_.SetData32(0x1300, 0xfc);
+  this->memory_.SetData32(0x1304, 0);
+  this->memory_.SetMemory(0x1308, std::vector<uint8_t>{1, 'z', 'R', '\0', 0, 0, 0, 0, 0x1b});
+
+  // FDE 32 information.
+  this->memory_.SetData32(0x1400, 0xfc);
+  this->memory_.SetData32(0x1404, 0x104);
+  this->memory_.SetData32(0x1408, 0x20f8);
+  this->memory_.SetData32(0x140c, 0x200);
+  this->memory_.SetData16(0x1410, 0);
+
+  ASSERT_TRUE(this->eh_frame_->EhFrameInit(0x1300, 0x200, 0x1000));
+  ASSERT_TRUE(this->eh_frame_->Init(0x1000, 0x100, 0x2000));
+  EXPECT_EQ(1U, this->eh_frame_->TestGetVersion());
+  EXPECT_EQ(0x1b, this->eh_frame_->TestGetTableEncoding());
+  EXPECT_EQ(4U, this->eh_frame_->TestGetTableEntrySize());
+  EXPECT_EQ(1U, this->eh_frame_->TestGetFdeCount());
+  EXPECT_EQ(0x100aU, this->eh_frame_->TestGetHdrEntriesOffset());
+  EXPECT_EQ(0x1000U, this->eh_frame_->TestGetHdrEntriesDataOffset());
+
+  const DwarfFde* fde = this->eh_frame_->GetFdeFromPc(0x4600);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x4500U, fde->pc_start);
+  EXPECT_EQ(0x4700U, fde->pc_end);
+}
+
+TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdeFromPc_wtih_empty_fde) {
+  this->memory_.SetMemory(0x1000, std::vector<uint8_t>{0x1, DW_EH_PE_udata2, DW_EH_PE_udata4,
+                                                       DW_EH_PE_pcrel | DW_EH_PE_sdata4});
+  this->memory_.SetData16(0x1004, 0x500);
+  this->memory_.SetData32(0x1006, 1);
+  this->memory_.SetData32(0x100a, 0x2500);
+  this->memory_.SetData32(0x100e, 0x1400);
+
+  // CIE 32 information.
+  this->memory_.SetData32(0x1300, 0xfc);
+  this->memory_.SetData32(0x1304, 0);
+  this->memory_.SetMemory(0x1308, std::vector<uint8_t>{1, 'z', 'R', '\0', 0, 0, 0, 0, 0x1b});
+
+  // FDE 32 information.
+  this->memory_.SetData32(0x1400, 0xfc);
+  this->memory_.SetData32(0x1404, 0x104);
+  this->memory_.SetData32(0x1408, 0x30f8);
+  this->memory_.SetData32(0x140c, 0);
+  this->memory_.SetData16(0x1410, 0);
+
+  // FDE 32 information.
+  this->memory_.SetData32(0x1500, 0xfc);
+  this->memory_.SetData32(0x1504, 0x204);
+  this->memory_.SetData32(0x1508, 0x2ff8);
+  this->memory_.SetData32(0x150c, 0x200);
+  this->memory_.SetData16(0x1510, 0);
+
+  ASSERT_TRUE(this->eh_frame_->EhFrameInit(0x1300, 0x300, 0));
+  ASSERT_TRUE(this->eh_frame_->Init(0x1000, 0x100, 0));
+
+  const DwarfFde* fde = this->eh_frame_->GetFdeFromPc(0x4600);
+  ASSERT_TRUE(fde != nullptr);
+  EXPECT_EQ(0x4500U, fde->pc_start);
+  EXPECT_EQ(0x4700U, fde->pc_end);
+}
+
+TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdes_with_empty_fde) {
+  this->memory_.SetMemory(0x1000, std::vector<uint8_t>{0x1, DW_EH_PE_udata2, DW_EH_PE_udata4,
+                                                       DW_EH_PE_pcrel | DW_EH_PE_sdata4});
+  this->memory_.SetData16(0x1004, 0x500);
+  this->memory_.SetData32(0x1006, 1);
+  this->memory_.SetData32(0x100a, 0x2500);
+  this->memory_.SetData32(0x100e, 0x1400);
+
+  // CIE 32 information.
+  this->memory_.SetData32(0x1300, 0xfc);
+  this->memory_.SetData32(0x1304, 0);
+  this->memory_.SetMemory(0x1308, std::vector<uint8_t>{1, 'z', 'R', '\0', 0, 0, 0, 0, 0x1b});
+
+  // FDE 32 information.
+  this->memory_.SetData32(0x1400, 0xfc);
+  this->memory_.SetData32(0x1404, 0x104);
+  this->memory_.SetData32(0x1408, 0x30f8);
+  this->memory_.SetData32(0x140c, 0);
+  this->memory_.SetData16(0x1410, 0);
+
+  // FDE 32 information.
+  this->memory_.SetData32(0x1500, 0xfc);
+  this->memory_.SetData32(0x1504, 0x204);
+  this->memory_.SetData32(0x1508, 0x2ff8);
+  this->memory_.SetData32(0x150c, 0x200);
+  this->memory_.SetData16(0x1510, 0);
+
+  ASSERT_TRUE(this->eh_frame_->EhFrameInit(0x1300, 0x300, 0));
+  ASSERT_TRUE(this->eh_frame_->Init(0x1000, 0x100, 0));
+
+  std::vector<const DwarfFde*> fdes;
+  this->eh_frame_->GetFdes(&fdes);
+  ASSERT_FALSE(fdes.empty());
+  ASSERT_EQ(1U, fdes.size());
+  EXPECT_EQ(0x4500U, fdes[0]->pc_start);
+  EXPECT_EQ(0x4700U, fdes[0]->pc_end);
+}
+
 TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdes) {
   this->memory_.SetMemory(
       0x1000, std::vector<uint8_t>{1, DW_EH_PE_udata2, DW_EH_PE_udata4, DW_EH_PE_sdata4});
@@ -220,7 +316,7 @@
 TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdeInfoFromIndex_expect_cache_fail) {
   this->eh_frame_->TestSetTableEntrySize(0x10);
   this->eh_frame_->TestSetTableEncoding(DW_EH_PE_udata4);
-  this->eh_frame_->TestSetEntriesOffset(0x1000);
+  this->eh_frame_->TestSetHdrEntriesOffset(0x1000);
 
   ASSERT_TRUE(this->eh_frame_->GetFdeInfoFromIndex(0) == nullptr);
   ASSERT_EQ(DWARF_ERROR_MEMORY_INVALID, this->eh_frame_->LastErrorCode());
@@ -233,8 +329,8 @@
 // We are assuming that pc rel, is really relative to the load_bias.
 TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdeInfoFromIndex_read_pcrel) {
   this->eh_frame_->TestSetTableEncoding(DW_EH_PE_pcrel | DW_EH_PE_udata4);
-  this->eh_frame_->TestSetEntriesOffset(0x1000);
-  this->eh_frame_->TestSetEntriesDataOffset(0x3000);
+  this->eh_frame_->TestSetHdrEntriesOffset(0x1000);
+  this->eh_frame_->TestSetHdrEntriesDataOffset(0x3000);
   this->eh_frame_->TestSetTableEntrySize(0x10);
 
   this->memory_.SetData32(0x1040, 0x340);
@@ -248,8 +344,8 @@
 
 TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdeInfoFromIndex_read_datarel) {
   this->eh_frame_->TestSetTableEncoding(DW_EH_PE_datarel | DW_EH_PE_udata4);
-  this->eh_frame_->TestSetEntriesOffset(0x1000);
-  this->eh_frame_->TestSetEntriesDataOffset(0x3000);
+  this->eh_frame_->TestSetHdrEntriesOffset(0x1000);
+  this->eh_frame_->TestSetHdrEntriesDataOffset(0x3000);
   this->eh_frame_->TestSetTableEntrySize(0x10);
 
   this->memory_.SetData32(0x1040, 0x340);
@@ -263,7 +359,7 @@
 
 TYPED_TEST_P(DwarfEhFrameWithHdrTest, GetFdeInfoFromIndex_cached) {
   this->eh_frame_->TestSetTableEncoding(DW_EH_PE_udata4);
-  this->eh_frame_->TestSetEntriesOffset(0x1000);
+  this->eh_frame_->TestSetHdrEntriesOffset(0x1000);
   this->eh_frame_->TestSetTableEntrySize(0x10);
 
   this->memory_.SetData32(0x1040, 0x340);
@@ -446,14 +542,16 @@
   ASSERT_EQ(nullptr, this->eh_frame_->GetFdeFromPc(0x800));
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfEhFrameWithHdrTest, Init, Init_non_zero_load_bias, GetFdes,
-                           GetFdeInfoFromIndex_expect_cache_fail, GetFdeInfoFromIndex_read_pcrel,
-                           GetFdeInfoFromIndex_read_datarel, GetFdeInfoFromIndex_cached,
-                           GetFdeOffsetFromPc_verify, GetFdeOffsetFromPc_index_fail,
-                           GetFdeOffsetFromPc_fail_fde_count, GetFdeOffsetFromPc_search,
-                           GetCieFde32, GetCieFde64, GetFdeFromPc_fde_not_found);
+REGISTER_TYPED_TEST_SUITE_P(DwarfEhFrameWithHdrTest, Init, Init_non_zero_load_bias,
+                            Init_non_zero_load_bias_different_from_eh_frame_bias,
+                            GetFdeFromPc_wtih_empty_fde, GetFdes_with_empty_fde, GetFdes,
+                            GetFdeInfoFromIndex_expect_cache_fail, GetFdeInfoFromIndex_read_pcrel,
+                            GetFdeInfoFromIndex_read_datarel, GetFdeInfoFromIndex_cached,
+                            GetFdeOffsetFromPc_verify, GetFdeOffsetFromPc_index_fail,
+                            GetFdeOffsetFromPc_fail_fde_count, GetFdeOffsetFromPc_search,
+                            GetCieFde32, GetCieFde64, GetFdeFromPc_fde_not_found);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfEhFrameWithHdrTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfEhFrameWithHdrTest, DwarfEhFrameWithHdrTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfEhFrameWithHdrTest, DwarfEhFrameWithHdrTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfOpLogTest.cpp b/libunwindstack/tests/DwarfOpLogTest.cpp
index 3f09dd8..8dbf6e8 100644
--- a/libunwindstack/tests/DwarfOpLogTest.cpp
+++ b/libunwindstack/tests/DwarfOpLogTest.cpp
@@ -48,7 +48,7 @@
   std::unique_ptr<DwarfMemory> mem_;
   std::unique_ptr<DwarfOp<TypeParam>> op_;
 };
-TYPED_TEST_CASE_P(DwarfOpLogTest);
+TYPED_TEST_SUITE_P(DwarfOpLogTest);
 
 TYPED_TEST_P(DwarfOpLogTest, multiple_ops) {
   // Multi operation opcodes.
@@ -65,9 +65,9 @@
   ASSERT_EQ(expected, lines);
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfOpLogTest, multiple_ops);
+REGISTER_TYPED_TEST_SUITE_P(DwarfOpLogTest, multiple_ops);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfOpLogTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfOpLogTest, DwarfOpLogTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfOpLogTest, DwarfOpLogTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfOpTest.cpp b/libunwindstack/tests/DwarfOpTest.cpp
index d424d5f..0e2d91a 100644
--- a/libunwindstack/tests/DwarfOpTest.cpp
+++ b/libunwindstack/tests/DwarfOpTest.cpp
@@ -48,7 +48,7 @@
   std::unique_ptr<DwarfMemory> mem_;
   std::unique_ptr<DwarfOp<TypeParam>> op_;
 };
-TYPED_TEST_CASE_P(DwarfOpTest);
+TYPED_TEST_SUITE_P(DwarfOpTest);
 
 TYPED_TEST_P(DwarfOpTest, decode) {
   // Memory error.
@@ -1571,15 +1571,16 @@
   EXPECT_FALSE(this->op_->dex_pc_set());
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfOpTest, decode, eval, illegal_opcode, not_implemented, op_addr,
-                           op_deref, op_deref_size, const_unsigned, const_signed, const_uleb,
-                           const_sleb, op_dup, op_drop, op_over, op_pick, op_swap, op_rot, op_abs,
-                           op_and, op_div, op_minus, op_mod, op_mul, op_neg, op_not, op_or, op_plus,
-                           op_plus_uconst, op_shl, op_shr, op_shra, op_xor, op_bra,
-                           compare_opcode_stack_error, compare_opcodes, op_skip, op_lit, op_reg,
-                           op_regx, op_breg, op_breg_invalid_register, op_bregx, op_nop, is_dex_pc);
+REGISTER_TYPED_TEST_SUITE_P(DwarfOpTest, decode, eval, illegal_opcode, not_implemented, op_addr,
+                            op_deref, op_deref_size, const_unsigned, const_signed, const_uleb,
+                            const_sleb, op_dup, op_drop, op_over, op_pick, op_swap, op_rot, op_abs,
+                            op_and, op_div, op_minus, op_mod, op_mul, op_neg, op_not, op_or,
+                            op_plus, op_plus_uconst, op_shl, op_shr, op_shra, op_xor, op_bra,
+                            compare_opcode_stack_error, compare_opcodes, op_skip, op_lit, op_reg,
+                            op_regx, op_breg, op_breg_invalid_register, op_bregx, op_nop,
+                            is_dex_pc);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfOpTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfOpTest, DwarfOpTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfOpTest, DwarfOpTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfSectionImplTest.cpp b/libunwindstack/tests/DwarfSectionImplTest.cpp
index 46f555a..cac59b7 100644
--- a/libunwindstack/tests/DwarfSectionImplTest.cpp
+++ b/libunwindstack/tests/DwarfSectionImplTest.cpp
@@ -35,7 +35,7 @@
   TestDwarfSectionImpl(Memory* memory) : DwarfSectionImpl<TypeParam>(memory) {}
   virtual ~TestDwarfSectionImpl() = default;
 
-  bool Init(uint64_t, uint64_t, uint64_t) override { return false; }
+  bool Init(uint64_t, uint64_t, int64_t) override { return false; }
 
   void GetFdes(std::vector<const DwarfFde*>*) override {}
 
@@ -68,7 +68,7 @@
   MemoryFake memory_;
   TestDwarfSectionImpl<TypeParam>* section_ = nullptr;
 };
-TYPED_TEST_CASE_P(DwarfSectionImplTest);
+TYPED_TEST_SUITE_P(DwarfSectionImplTest);
 
 // NOTE: All test class variables need to be referenced as this->.
 
@@ -571,18 +571,18 @@
   ASSERT_EQ("", GetFakeLogBuf());
 }
 
-REGISTER_TYPED_TEST_CASE_P(DwarfSectionImplTest, GetCieFromOffset_fail_should_not_cache,
-                           GetFdeFromOffset_fail_should_not_cache, Eval_cfa_expr_eval_fail,
-                           Eval_cfa_expr_no_stack, Eval_cfa_expr_is_register, Eval_cfa_expr,
-                           Eval_cfa_val_expr, Eval_bad_regs, Eval_no_cfa, Eval_cfa_bad,
-                           Eval_cfa_register_prev, Eval_cfa_register_from_value,
-                           Eval_double_indirection, Eval_register_reference_chain, Eval_dex_pc,
-                           Eval_invalid_register, Eval_different_reg_locations,
-                           Eval_return_address_undefined, Eval_pc_zero, Eval_return_address,
-                           Eval_ignore_large_reg_loc, Eval_reg_expr, Eval_reg_val_expr,
-                           GetCfaLocationInfo_cie_not_cached, GetCfaLocationInfo_cie_cached, Log);
+REGISTER_TYPED_TEST_SUITE_P(DwarfSectionImplTest, GetCieFromOffset_fail_should_not_cache,
+                            GetFdeFromOffset_fail_should_not_cache, Eval_cfa_expr_eval_fail,
+                            Eval_cfa_expr_no_stack, Eval_cfa_expr_is_register, Eval_cfa_expr,
+                            Eval_cfa_val_expr, Eval_bad_regs, Eval_no_cfa, Eval_cfa_bad,
+                            Eval_cfa_register_prev, Eval_cfa_register_from_value,
+                            Eval_double_indirection, Eval_register_reference_chain, Eval_dex_pc,
+                            Eval_invalid_register, Eval_different_reg_locations,
+                            Eval_return_address_undefined, Eval_pc_zero, Eval_return_address,
+                            Eval_ignore_large_reg_loc, Eval_reg_expr, Eval_reg_val_expr,
+                            GetCfaLocationInfo_cie_not_cached, GetCfaLocationInfo_cie_cached, Log);
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfSectionImplTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, DwarfSectionImplTest, DwarfSectionImplTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, DwarfSectionImplTest, DwarfSectionImplTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfSectionTest.cpp b/libunwindstack/tests/DwarfSectionTest.cpp
index d754fcc..953dc75 100644
--- a/libunwindstack/tests/DwarfSectionTest.cpp
+++ b/libunwindstack/tests/DwarfSectionTest.cpp
@@ -30,23 +30,24 @@
   MockDwarfSection(Memory* memory) : DwarfSection(memory) {}
   virtual ~MockDwarfSection() = default;
 
-  MOCK_METHOD3(Init, bool(uint64_t, uint64_t, uint64_t));
+  MOCK_METHOD(bool, Init, (uint64_t, uint64_t, int64_t), (override));
 
-  MOCK_METHOD5(Eval, bool(const DwarfCie*, Memory*, const dwarf_loc_regs_t&, Regs*, bool*));
+  MOCK_METHOD(bool, Eval, (const DwarfCie*, Memory*, const dwarf_loc_regs_t&, Regs*, bool*),
+              (override));
 
-  MOCK_METHOD3(Log, bool(uint8_t, uint64_t, const DwarfFde*));
+  MOCK_METHOD(bool, Log, (uint8_t, uint64_t, const DwarfFde*), (override));
 
-  MOCK_METHOD1(GetFdes, void(std::vector<const DwarfFde*>*));
+  MOCK_METHOD(void, GetFdes, (std::vector<const DwarfFde*>*), (override));
 
-  MOCK_METHOD1(GetFdeFromPc, const DwarfFde*(uint64_t));
+  MOCK_METHOD(const DwarfFde*, GetFdeFromPc, (uint64_t), (override));
 
-  MOCK_METHOD3(GetCfaLocationInfo, bool(uint64_t, const DwarfFde*, dwarf_loc_regs_t*));
+  MOCK_METHOD(bool, GetCfaLocationInfo, (uint64_t, const DwarfFde*, dwarf_loc_regs_t*), (override));
 
-  MOCK_METHOD1(GetCieOffsetFromFde32, uint64_t(uint32_t));
+  MOCK_METHOD(uint64_t, GetCieOffsetFromFde32, (uint32_t), (override));
 
-  MOCK_METHOD1(GetCieOffsetFromFde64, uint64_t(uint64_t));
+  MOCK_METHOD(uint64_t, GetCieOffsetFromFde64, (uint64_t), (override));
 
-  MOCK_METHOD1(AdjustPcFromFde, uint64_t(uint64_t));
+  MOCK_METHOD(uint64_t, AdjustPcFromFde, (uint64_t), (override));
 };
 
 class DwarfSectionTest : public ::testing::Test {
diff --git a/libunwindstack/tests/ElfCacheTest.cpp b/libunwindstack/tests/ElfCacheTest.cpp
index 07fd6f6..5f13546 100644
--- a/libunwindstack/tests/ElfCacheTest.cpp
+++ b/libunwindstack/tests/ElfCacheTest.cpp
@@ -31,7 +31,7 @@
 
 class ElfCacheTest : public ::testing::Test {
  protected:
-  static void SetUpTestCase() { memory_.reset(new MemoryFake); }
+  static void SetUpTestSuite() { memory_.reset(new MemoryFake); }
 
   void SetUp() override { Elf::SetCachingEnabled(true); }
 
@@ -78,8 +78,8 @@
 
   uint64_t start = 0x1000;
   uint64_t end = 0x20000;
-  MapInfo info1(nullptr, start, end, 0, 0x5, tf.path);
-  MapInfo info2(nullptr, start, end, 0, 0x5, tf.path);
+  MapInfo info1(nullptr, nullptr, start, end, 0, 0x5, tf.path);
+  MapInfo info2(nullptr, nullptr, start, end, 0, 0x5, tf.path);
 
   Elf* elf1 = info1.GetElf(memory_, ARCH_ARM);
   ASSERT_TRUE(elf1->valid());
@@ -119,17 +119,17 @@
   uint64_t start = 0x1000;
   uint64_t end = 0x20000;
   // Will have an elf at offset 0 in file.
-  MapInfo info0_1(nullptr, start, end, 0, 0x5, tf.path);
-  MapInfo info0_2(nullptr, start, end, 0, 0x5, tf.path);
+  MapInfo info0_1(nullptr, nullptr, start, end, 0, 0x5, tf.path);
+  MapInfo info0_2(nullptr, nullptr, start, end, 0, 0x5, tf.path);
   // Will have an elf at offset 0x100 in file.
-  MapInfo info100_1(nullptr, start, end, 0x100, 0x5, tf.path);
-  MapInfo info100_2(nullptr, start, end, 0x100, 0x5, tf.path);
+  MapInfo info100_1(nullptr, nullptr, start, end, 0x100, 0x5, tf.path);
+  MapInfo info100_2(nullptr, nullptr, start, end, 0x100, 0x5, tf.path);
   // Will have an elf at offset 0x200 in file.
-  MapInfo info200_1(nullptr, start, end, 0x200, 0x5, tf.path);
-  MapInfo info200_2(nullptr, start, end, 0x200, 0x5, tf.path);
+  MapInfo info200_1(nullptr, nullptr, start, end, 0x200, 0x5, tf.path);
+  MapInfo info200_2(nullptr, nullptr, start, end, 0x200, 0x5, tf.path);
   // Will have an elf at offset 0 in file.
-  MapInfo info300_1(nullptr, start, end, 0x300, 0x5, tf.path);
-  MapInfo info300_2(nullptr, start, end, 0x300, 0x5, tf.path);
+  MapInfo info300_1(nullptr, nullptr, start, end, 0x300, 0x5, tf.path);
+  MapInfo info300_2(nullptr, nullptr, start, end, 0x300, 0x5, tf.path);
 
   Elf* elf0_1 = info0_1.GetElf(memory_, ARCH_ARM);
   ASSERT_TRUE(elf0_1->valid());
@@ -216,10 +216,10 @@
   uint64_t start = 0x1000;
   uint64_t end = 0x20000;
   // Multiple info sections at different offsets will have non-zero elf offsets.
-  MapInfo info300_1(nullptr, start, end, 0x300, 0x5, tf.path);
-  MapInfo info300_2(nullptr, start, end, 0x300, 0x5, tf.path);
-  MapInfo info400_1(nullptr, start, end, 0x400, 0x5, tf.path);
-  MapInfo info400_2(nullptr, start, end, 0x400, 0x5, tf.path);
+  MapInfo info300_1(nullptr, nullptr, start, end, 0x300, 0x5, tf.path);
+  MapInfo info300_2(nullptr, nullptr, start, end, 0x300, 0x5, tf.path);
+  MapInfo info400_1(nullptr, nullptr, start, end, 0x400, 0x5, tf.path);
+  MapInfo info400_2(nullptr, nullptr, start, end, 0x400, 0x5, tf.path);
 
   Elf* elf300_1 = info300_1.GetElf(memory_, ARCH_ARM);
   ASSERT_TRUE(elf300_1->valid());
diff --git a/libunwindstack/tests/ElfFake.h b/libunwindstack/tests/ElfFake.h
index bd3083c..fc90dab 100644
--- a/libunwindstack/tests/ElfFake.h
+++ b/libunwindstack/tests/ElfFake.h
@@ -66,8 +66,8 @@
   ElfInterfaceFake(Memory* memory) : ElfInterface(memory) {}
   virtual ~ElfInterfaceFake() = default;
 
-  bool Init(uint64_t*) override { return false; }
-  void InitHeaders(uint64_t) override {}
+  bool Init(int64_t*) override { return false; }
+  void InitHeaders() override {}
   std::string GetSoname() override { return fake_soname_; }
 
   bool GetFunctionName(uint64_t, std::string*, uint64_t*) override;
@@ -97,6 +97,17 @@
 
   void FakeSetErrorAddress(uint64_t address) { last_error_.address = address; }
 
+  void FakeSetDataOffset(uint64_t offset) { data_offset_ = offset; }
+  void FakeSetDataVaddrStart(uint64_t vaddr) { data_vaddr_start_ = vaddr; }
+  void FakeSetDataVaddrEnd(uint64_t vaddr) { data_vaddr_end_ = vaddr; }
+
+  void FakeSetDynamicOffset(uint64_t offset) { dynamic_offset_ = offset; }
+  void FakeSetDynamicVaddrStart(uint64_t vaddr) { dynamic_vaddr_start_ = vaddr; }
+  void FakeSetDynamicVaddrEnd(uint64_t vaddr) { dynamic_vaddr_end_ = vaddr; }
+
+  void FakeSetGnuDebugdataOffset(uint64_t offset) { gnu_debugdata_offset_ = offset; }
+  void FakeSetGnuDebugdataSize(uint64_t size) { gnu_debugdata_size_ = size; }
+
  private:
   std::unordered_map<std::string, uint64_t> globals_;
   std::string fake_build_id_;
diff --git a/libunwindstack/tests/ElfInterfaceTest.cpp b/libunwindstack/tests/ElfInterfaceTest.cpp
index cdc927a..3cf90fe 100644
--- a/libunwindstack/tests/ElfInterfaceTest.cpp
+++ b/libunwindstack/tests/ElfInterfaceTest.cpp
@@ -112,6 +112,21 @@
   template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
   void InitSectionHeadersOffsets();
 
+  template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
+  void InitSectionHeadersOffsetsEhFrameSectionBias(uint64_t addr, uint64_t offset,
+                                                   int64_t expected_bias);
+
+  template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
+  void InitSectionHeadersOffsetsEhFrameHdrSectionBias(uint64_t addr, uint64_t offset,
+                                                      int64_t expected_bias);
+
+  template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
+  void InitSectionHeadersOffsetsDebugFrameSectionBias(uint64_t addr, uint64_t offset,
+                                                      int64_t expected_bias);
+
+  template <typename Ehdr, typename Phdr, typename ElfInterfaceType>
+  void CheckGnuEhFrame(uint64_t addr, uint64_t offset, int64_t expected_bias);
+
   template <typename Sym>
   void InitSym(uint64_t offset, uint32_t value, uint32_t size, uint32_t name_offset,
                uint64_t sym_offset, const char* name);
@@ -131,6 +146,12 @@
   template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
   void BuildIDSectionTooSmallForHeader();
 
+  template <typename Ehdr, typename Phdr, typename ElfInterfaceType>
+  void CheckLoadBiasInFirstPhdr(int64_t load_bias);
+
+  template <typename Ehdr, typename Phdr, typename ElfInterfaceType>
+  void CheckLoadBiasInFirstExecPhdr(uint64_t offset, uint64_t vaddr, int64_t load_bias);
+
   MemoryFake memory_;
 };
 
@@ -166,9 +187,9 @@
   phdr.p_align = 0x1000;
   memory_.SetMemory(0x100, &phdr, sizeof(phdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0x2000U, load_bias);
+  EXPECT_EQ(0x2000, load_bias);
 
   const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads();
   ASSERT_EQ(1U, pt_loads.size());
@@ -178,11 +199,11 @@
   ASSERT_EQ(0x10000U, load_data.table_size);
 }
 
-TEST_F(ElfInterfaceTest, elf32_single_pt_load) {
+TEST_F(ElfInterfaceTest, single_pt_load_32) {
   SinglePtLoad<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_single_pt_load) {
+TEST_F(ElfInterfaceTest, single_pt_load_64) {
   SinglePtLoad<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>();
 }
 
@@ -222,9 +243,9 @@
   phdr.p_align = 0x1002;
   memory_.SetMemory(0x100 + 2 * sizeof(phdr), &phdr, sizeof(phdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0x2000U, load_bias);
+  EXPECT_EQ(0x2000, load_bias);
 
   const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads();
   ASSERT_EQ(3U, pt_loads.size());
@@ -245,11 +266,11 @@
   ASSERT_EQ(0x10002U, load_data.table_size);
 }
 
-TEST_F(ElfInterfaceTest, elf32_multiple_executable_pt_loads) {
+TEST_F(ElfInterfaceTest, multiple_executable_pt_loads_32) {
   MultipleExecutablePtLoads<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_multiple_executable_pt_loads) {
+TEST_F(ElfInterfaceTest, multiple_executable_pt_loads_64) {
   MultipleExecutablePtLoads<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>();
 }
 
@@ -289,9 +310,9 @@
   phdr.p_align = 0x1002;
   memory_.SetMemory(0x100 + 2 * (sizeof(phdr) + 100), &phdr, sizeof(phdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0x2000U, load_bias);
+  EXPECT_EQ(0x2000, load_bias);
 
   const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads();
   ASSERT_EQ(3U, pt_loads.size());
@@ -312,12 +333,12 @@
   ASSERT_EQ(0x10002U, load_data.table_size);
 }
 
-TEST_F(ElfInterfaceTest, elf32_multiple_executable_pt_loads_increments_not_size_of_phdr) {
+TEST_F(ElfInterfaceTest, multiple_executable_pt_loads_increments_not_size_of_phdr_32) {
   MultipleExecutablePtLoadsIncrementsNotSizeOfPhdr<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn,
                                                    ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_multiple_executable_pt_loads_increments_not_size_of_phdr) {
+TEST_F(ElfInterfaceTest, multiple_executable_pt_loads_increments_not_size_of_phdr_64) {
   MultipleExecutablePtLoadsIncrementsNotSizeOfPhdr<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn,
                                                    ElfInterface64>();
 }
@@ -358,9 +379,9 @@
   phdr.p_align = 0x1002;
   memory_.SetMemory(0x100 + 2 * sizeof(phdr), &phdr, sizeof(phdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0x1001, load_bias);
 
   const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads();
   ASSERT_EQ(1U, pt_loads.size());
@@ -371,11 +392,11 @@
   ASSERT_EQ(0x10001U, load_data.table_size);
 }
 
-TEST_F(ElfInterfaceTest, elf32_non_executable_pt_loads) {
+TEST_F(ElfInterfaceTest, non_executable_pt_loads_32) {
   NonExecutablePtLoads<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_non_executable_pt_loads) {
+TEST_F(ElfInterfaceTest, non_executable_pt_loads_64) {
   NonExecutablePtLoads<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>();
 }
 
@@ -428,11 +449,10 @@
   memset(&phdr, 0, sizeof(phdr));
   phdr.p_type = PT_GNU_EH_FRAME;
   memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr));
-  phdr_offset += sizeof(phdr);
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0x2000U, load_bias);
+  EXPECT_EQ(0x2000, load_bias);
 
   const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads();
   ASSERT_EQ(1U, pt_loads.size());
@@ -443,15 +463,15 @@
   ASSERT_EQ(0x10000U, load_data.table_size);
 }
 
-TEST_F(ElfInterfaceTest, elf32_many_phdrs) {
+TEST_F(ElfInterfaceTest, many_phdrs_32) {
   ElfInterfaceTest::ManyPhdrs<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_many_phdrs) {
+TEST_F(ElfInterfaceTest, many_phdrs_64) {
   ElfInterfaceTest::ManyPhdrs<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>();
 }
 
-TEST_F(ElfInterfaceTest, elf32_arm) {
+TEST_F(ElfInterfaceTest, arm32) {
   ElfInterfaceArm elf_arm(&memory_);
 
   Elf32_Ehdr ehdr = {};
@@ -470,9 +490,9 @@
   memory_.SetData32(0x2000, 0x1000);
   memory_.SetData32(0x2008, 0x1000);
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf_arm.Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 
   std::vector<uint32_t> entries;
   for (auto addr : elf_arm) {
@@ -551,19 +571,19 @@
 void ElfInterfaceTest::Soname() {
   std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 
   ASSERT_EQ("fake_soname.so", elf->GetSoname());
 }
 
-TEST_F(ElfInterfaceTest, elf32_soname) {
+TEST_F(ElfInterfaceTest, soname_32) {
   SonameInit<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr, Elf32_Dyn>();
   Soname<ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_soname) {
+TEST_F(ElfInterfaceTest, soname_64) {
   SonameInit<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr, Elf64_Dyn>();
   Soname<ElfInterface64>();
 }
@@ -572,19 +592,19 @@
 void ElfInterfaceTest::SonameAfterDtNull() {
   std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 
   ASSERT_EQ("", elf->GetSoname());
 }
 
-TEST_F(ElfInterfaceTest, elf32_soname_after_dt_null) {
+TEST_F(ElfInterfaceTest, soname_after_dt_null_32) {
   SonameInit<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr, Elf32_Dyn>(SONAME_DTNULL_AFTER);
   SonameAfterDtNull<ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_soname_after_dt_null) {
+TEST_F(ElfInterfaceTest, soname_after_dt_null_64) {
   SonameInit<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr, Elf64_Dyn>(SONAME_DTNULL_AFTER);
   SonameAfterDtNull<ElfInterface64>();
 }
@@ -593,19 +613,19 @@
 void ElfInterfaceTest::SonameSize() {
   std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 
   ASSERT_EQ("", elf->GetSoname());
 }
 
-TEST_F(ElfInterfaceTest, elf32_soname_size) {
+TEST_F(ElfInterfaceTest, soname_size_32) {
   SonameInit<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr, Elf32_Dyn>(SONAME_DTSIZE_SMALL);
   SonameSize<ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_soname_size) {
+TEST_F(ElfInterfaceTest, soname_size_64) {
   SonameInit<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr, Elf64_Dyn>(SONAME_DTSIZE_SMALL);
   SonameSize<ElfInterface64>();
 }
@@ -616,19 +636,19 @@
 void ElfInterfaceTest::SonameMissingMap() {
   std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 
   ASSERT_EQ("", elf->GetSoname());
 }
 
-TEST_F(ElfInterfaceTest, elf32_soname_missing_map) {
+TEST_F(ElfInterfaceTest, soname_missing_map_32) {
   SonameInit<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr, Elf32_Dyn>(SONAME_MISSING_MAP);
   SonameMissingMap<ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, elf64_soname_missing_map) {
+TEST_F(ElfInterfaceTest, soname_missing_map_64) {
   SonameInit<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr, Elf64_Dyn>(SONAME_MISSING_MAP);
   SonameMissingMap<ElfInterface64>();
 }
@@ -647,17 +667,17 @@
   memory_.SetData32(0x10004, 0x500);
   memory_.SetData32(0x10008, 250);
 
-  elf.InitHeaders(0);
+  elf.InitHeaders();
 
   EXPECT_FALSE(elf.eh_frame() == nullptr);
   EXPECT_TRUE(elf.debug_frame() == nullptr);
 }
 
-TEST_F(ElfInterfaceTest, init_headers_eh_frame32) {
+TEST_F(ElfInterfaceTest, init_headers_eh_frame_32) {
   InitHeadersEhFrameTest<ElfInterface32Fake>();
 }
 
-TEST_F(ElfInterfaceTest, init_headers_eh_frame64) {
+TEST_F(ElfInterfaceTest, init_headers_eh_frame_64) {
   InitHeadersEhFrameTest<ElfInterface64Fake>();
 }
 
@@ -679,17 +699,17 @@
   memory_.SetData32(0x5108, 0x1500);
   memory_.SetData32(0x510c, 0x200);
 
-  elf.InitHeaders(0);
+  elf.InitHeaders();
 
   EXPECT_TRUE(elf.eh_frame() == nullptr);
   EXPECT_FALSE(elf.debug_frame() == nullptr);
 }
 
-TEST_F(ElfInterfaceTest, init_headers_debug_frame32) {
+TEST_F(ElfInterfaceTest, init_headers_debug_frame_32) {
   InitHeadersDebugFrame<ElfInterface32Fake>();
 }
 
-TEST_F(ElfInterfaceTest, init_headers_debug_frame64) {
+TEST_F(ElfInterfaceTest, init_headers_debug_frame_64) {
   InitHeadersDebugFrame<ElfInterface64Fake>();
 }
 
@@ -703,16 +723,16 @@
   ehdr.e_phentsize = sizeof(Phdr);
   memory_.SetMemory(0, &ehdr, sizeof(ehdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 }
 
-TEST_F(ElfInterfaceTest, init_program_headers_malformed32) {
+TEST_F(ElfInterfaceTest, init_program_headers_malformed_32) {
   InitProgramHeadersMalformed<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, init_program_headers_malformed64) {
+TEST_F(ElfInterfaceTest, init_program_headers_malformed_64) {
   InitProgramHeadersMalformed<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>();
 }
 
@@ -726,16 +746,16 @@
   ehdr.e_shentsize = sizeof(Shdr);
   memory_.SetMemory(0, &ehdr, sizeof(ehdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_malformed32) {
+TEST_F(ElfInterfaceTest, init_section_headers_malformed_32) {
   InitSectionHeadersMalformed<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_malformed64) {
+TEST_F(ElfInterfaceTest, init_section_headers_malformed_64) {
   InitSectionHeadersMalformed<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>();
 }
 
@@ -790,11 +810,10 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
   EXPECT_EQ(0U, elf->debug_frame_offset());
   EXPECT_EQ(0U, elf->debug_frame_size());
   EXPECT_EQ(0U, elf->gnu_debugdata_offset());
@@ -805,11 +824,11 @@
   ASSERT_FALSE(elf->GetFunctionName(0x90010, &name, &name_offset));
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_malformed_symdata32) {
+TEST_F(ElfInterfaceTest, init_section_headers_malformed_symdata_32) {
   InitSectionHeadersMalformedSymData<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_malformed_symdata64) {
+TEST_F(ElfInterfaceTest, init_section_headers_malformed_symdata_64) {
   InitSectionHeadersMalformedSymData<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>();
 }
 
@@ -860,14 +879,13 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   InitSym<Sym>(0x5000, 0x90000, 0x1000, 0x100, 0xf000, "function_one");
   InitSym<Sym>(0x6000, 0xd0000, 0x1000, 0x300, 0xf000, "function_two");
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
   EXPECT_EQ(0U, elf->debug_frame_offset());
   EXPECT_EQ(0U, elf->debug_frame_size());
   EXPECT_EQ(0U, elf->gnu_debugdata_offset());
@@ -884,19 +902,19 @@
   EXPECT_EQ(32U, name_offset);
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers32) {
+TEST_F(ElfInterfaceTest, init_section_headers_32) {
   InitSectionHeaders<Elf32_Ehdr, Elf32_Shdr, Elf32_Sym, ElfInterface32>(sizeof(Elf32_Shdr));
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers64) {
+TEST_F(ElfInterfaceTest, init_section_headers_64) {
   InitSectionHeaders<Elf64_Ehdr, Elf64_Shdr, Elf64_Sym, ElfInterface64>(sizeof(Elf64_Shdr));
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_non_std_entry_size32) {
+TEST_F(ElfInterfaceTest, init_section_headers_non_std_entry_size_32) {
   InitSectionHeaders<Elf32_Ehdr, Elf32_Shdr, Elf32_Sym, ElfInterface32>(0x100);
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_non_std_entry_size64) {
+TEST_F(ElfInterfaceTest, init_section_headers_non_std_entry_size_64) {
   InitSectionHeaders<Elf64_Ehdr, Elf64_Shdr, Elf64_Sym, ElfInterface64>(0x100);
 }
 
@@ -961,7 +979,7 @@
   shdr.sh_type = SHT_PROGBITS;
   shdr.sh_link = 2;
   shdr.sh_name = 0x400;
-  shdr.sh_addr = 0x6000;
+  shdr.sh_addr = 0xa000;
   shdr.sh_offset = 0xa000;
   shdr.sh_entsize = 0x100;
   shdr.sh_size = 0xf00;
@@ -971,10 +989,10 @@
   memset(&shdr, 0, sizeof(shdr));
   shdr.sh_type = SHT_NOTE;
   shdr.sh_name = 0x500;
+  shdr.sh_addr = 0xb000;
   shdr.sh_offset = 0xb000;
   shdr.sh_size = 0xf00;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   memory_.SetMemory(0xf100, ".debug_frame", sizeof(".debug_frame"));
   memory_.SetMemory(0xf200, ".gnu_debugdata", sizeof(".gnu_debugdata"));
@@ -982,29 +1000,352 @@
   memory_.SetMemory(0xf400, ".eh_frame_hdr", sizeof(".eh_frame_hdr"));
   memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
   EXPECT_EQ(0x6000U, elf->debug_frame_offset());
+  EXPECT_EQ(0, elf->debug_frame_section_bias());
   EXPECT_EQ(0x500U, elf->debug_frame_size());
+
   EXPECT_EQ(0x5000U, elf->gnu_debugdata_offset());
   EXPECT_EQ(0x800U, elf->gnu_debugdata_size());
+
   EXPECT_EQ(0x7000U, elf->eh_frame_offset());
+  EXPECT_EQ(0, elf->eh_frame_section_bias());
   EXPECT_EQ(0x800U, elf->eh_frame_size());
+
   EXPECT_EQ(0xa000U, elf->eh_frame_hdr_offset());
+  EXPECT_EQ(0, elf->eh_frame_hdr_section_bias());
   EXPECT_EQ(0xf00U, elf->eh_frame_hdr_size());
+
   EXPECT_EQ(0xb000U, elf->gnu_build_id_offset());
   EXPECT_EQ(0xf00U, elf->gnu_build_id_size());
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_offsets32) {
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_32) {
   InitSectionHeadersOffsets<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, init_section_headers_offsets64) {
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_64) {
   InitSectionHeadersOffsets<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>();
 }
 
+template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
+void ElfInterfaceTest::InitSectionHeadersOffsetsEhFrameSectionBias(uint64_t addr, uint64_t offset,
+                                                                   int64_t expected_bias) {
+  std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+  uint64_t elf_offset = 0x2000;
+
+  Ehdr ehdr = {};
+  ehdr.e_shoff = elf_offset;
+  ehdr.e_shnum = 4;
+  ehdr.e_shentsize = sizeof(Shdr);
+  ehdr.e_shstrndx = 2;
+  memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+  elf_offset += ehdr.e_shentsize;
+
+  Shdr shdr = {};
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_link = 2;
+  shdr.sh_name = 0x200;
+  shdr.sh_addr = 0x8000;
+  shdr.sh_offset = 0x8000;
+  shdr.sh_entsize = 0x100;
+  shdr.sh_size = 0x800;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+  elf_offset += ehdr.e_shentsize;
+
+  // The string data for section header names.
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_STRTAB;
+  shdr.sh_name = 0x20000;
+  shdr.sh_offset = 0xf000;
+  shdr.sh_size = 0x1000;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+  elf_offset += ehdr.e_shentsize;
+
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_link = 2;
+  shdr.sh_name = 0x100;
+  shdr.sh_addr = addr;
+  shdr.sh_offset = offset;
+  shdr.sh_entsize = 0x100;
+  shdr.sh_size = 0x500;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+
+  memory_.SetMemory(0xf100, ".eh_frame", sizeof(".eh_frame"));
+  memory_.SetMemory(0xf200, ".eh_frame_hdr", sizeof(".eh_frame_hdr"));
+
+  int64_t load_bias = 0;
+  ASSERT_TRUE(elf->Init(&load_bias));
+  EXPECT_EQ(0, load_bias);
+  EXPECT_EQ(offset, elf->eh_frame_offset());
+  EXPECT_EQ(expected_bias, elf->eh_frame_section_bias());
+  EXPECT_EQ(0x500U, elf->eh_frame_size());
+
+  EXPECT_EQ(0x8000U, elf->eh_frame_hdr_offset());
+  EXPECT_EQ(0, elf->eh_frame_hdr_section_bias());
+  EXPECT_EQ(0x800U, elf->eh_frame_hdr_size());
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_section_bias_zero_32) {
+  InitSectionHeadersOffsetsEhFrameSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(0x4000,
+                                                                                      0x4000, 0);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_section_bias_zero_64) {
+  InitSectionHeadersOffsetsEhFrameSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(0x6000,
+                                                                                      0x6000, 0);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_section_bias_positive_32) {
+  InitSectionHeadersOffsetsEhFrameSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(
+      0x5000, 0x4000, 0x1000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_section_bias_positive_64) {
+  InitSectionHeadersOffsetsEhFrameSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(
+      0x6000, 0x4000, 0x2000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_section_bias_negative_32) {
+  InitSectionHeadersOffsetsEhFrameSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(
+      0x3000, 0x4000, -0x1000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_section_bias_negative_64) {
+  InitSectionHeadersOffsetsEhFrameSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(
+      0x6000, 0x9000, -0x3000);
+}
+
+template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
+void ElfInterfaceTest::InitSectionHeadersOffsetsEhFrameHdrSectionBias(uint64_t addr,
+                                                                      uint64_t offset,
+                                                                      int64_t expected_bias) {
+  std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+  uint64_t elf_offset = 0x2000;
+
+  Ehdr ehdr = {};
+  ehdr.e_shoff = elf_offset;
+  ehdr.e_shnum = 4;
+  ehdr.e_shentsize = sizeof(Shdr);
+  ehdr.e_shstrndx = 2;
+  memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+  elf_offset += ehdr.e_shentsize;
+
+  Shdr shdr = {};
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_link = 2;
+  shdr.sh_name = 0x200;
+  shdr.sh_addr = addr;
+  shdr.sh_offset = offset;
+  shdr.sh_entsize = 0x100;
+  shdr.sh_size = 0x800;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+  elf_offset += ehdr.e_shentsize;
+
+  // The string data for section header names.
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_STRTAB;
+  shdr.sh_name = 0x20000;
+  shdr.sh_offset = 0xf000;
+  shdr.sh_size = 0x1000;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+  elf_offset += ehdr.e_shentsize;
+
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_link = 2;
+  shdr.sh_name = 0x100;
+  shdr.sh_addr = 0x5000;
+  shdr.sh_offset = 0x5000;
+  shdr.sh_entsize = 0x100;
+  shdr.sh_size = 0x500;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+
+  memory_.SetMemory(0xf100, ".eh_frame", sizeof(".eh_frame"));
+  memory_.SetMemory(0xf200, ".eh_frame_hdr", sizeof(".eh_frame_hdr"));
+
+  int64_t load_bias = 0;
+  ASSERT_TRUE(elf->Init(&load_bias));
+  EXPECT_EQ(0, load_bias);
+  EXPECT_EQ(0x5000U, elf->eh_frame_offset());
+  EXPECT_EQ(0, elf->eh_frame_section_bias());
+  EXPECT_EQ(0x500U, elf->eh_frame_size());
+  EXPECT_EQ(offset, elf->eh_frame_hdr_offset());
+  EXPECT_EQ(expected_bias, elf->eh_frame_hdr_section_bias());
+  EXPECT_EQ(0x800U, elf->eh_frame_hdr_size());
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_hdr_section_bias_zero_32) {
+  InitSectionHeadersOffsetsEhFrameHdrSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(0x9000,
+                                                                                         0x9000, 0);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_hdr_section_bias_zero_64) {
+  InitSectionHeadersOffsetsEhFrameHdrSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(0xa000,
+                                                                                         0xa000, 0);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_hdr_section_bias_positive_32) {
+  InitSectionHeadersOffsetsEhFrameHdrSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(
+      0x9000, 0x4000, 0x5000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_hdr_section_bias_positive_64) {
+  InitSectionHeadersOffsetsEhFrameHdrSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(
+      0x6000, 0x1000, 0x5000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_hdr_section_bias_negative_32) {
+  InitSectionHeadersOffsetsEhFrameHdrSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(
+      0x3000, 0x5000, -0x2000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_eh_frame_hdr_section_bias_negative_64) {
+  InitSectionHeadersOffsetsEhFrameHdrSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(
+      0x5000, 0x9000, -0x4000);
+}
+
+template <typename Ehdr, typename Shdr, typename ElfInterfaceType>
+void ElfInterfaceTest::InitSectionHeadersOffsetsDebugFrameSectionBias(uint64_t addr,
+                                                                      uint64_t offset,
+                                                                      int64_t expected_bias) {
+  std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+  uint64_t elf_offset = 0x2000;
+
+  Ehdr ehdr = {};
+  ehdr.e_shoff = elf_offset;
+  ehdr.e_shnum = 3;
+  ehdr.e_shentsize = sizeof(Shdr);
+  ehdr.e_shstrndx = 2;
+  memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+  elf_offset += ehdr.e_shentsize;
+
+  Shdr shdr = {};
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_link = 2;
+  shdr.sh_name = 0x100;
+  shdr.sh_addr = addr;
+  shdr.sh_offset = offset;
+  shdr.sh_entsize = 0x100;
+  shdr.sh_size = 0x800;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+  elf_offset += ehdr.e_shentsize;
+
+  // The string data for section header names.
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_STRTAB;
+  shdr.sh_name = 0x20000;
+  shdr.sh_offset = 0xf000;
+  shdr.sh_size = 0x1000;
+  memory_.SetMemory(elf_offset, &shdr, sizeof(shdr));
+
+  memory_.SetMemory(0xf100, ".debug_frame", sizeof(".debug_frame"));
+
+  int64_t load_bias = 0;
+  ASSERT_TRUE(elf->Init(&load_bias));
+  EXPECT_EQ(0, load_bias);
+  EXPECT_EQ(offset, elf->debug_frame_offset());
+  EXPECT_EQ(expected_bias, elf->debug_frame_section_bias());
+  EXPECT_EQ(0x800U, elf->debug_frame_size());
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_debug_frame_section_bias_zero_32) {
+  InitSectionHeadersOffsetsDebugFrameSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(0x5000,
+                                                                                         0x5000, 0);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_debug_frame_section_bias_zero_64) {
+  InitSectionHeadersOffsetsDebugFrameSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(0xa000,
+                                                                                         0xa000, 0);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_debug_frame_section_bias_positive_32) {
+  InitSectionHeadersOffsetsDebugFrameSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(
+      0x5000, 0x2000, 0x3000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_debug_frame_section_bias_positive_64) {
+  InitSectionHeadersOffsetsDebugFrameSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(
+      0x7000, 0x1000, 0x6000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_debug_frame_section_bias_negative_32) {
+  InitSectionHeadersOffsetsDebugFrameSectionBias<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(
+      0x6000, 0x7000, -0x1000);
+}
+
+TEST_F(ElfInterfaceTest, init_section_headers_offsets_debug_frame_section_bias_negative_64) {
+  InitSectionHeadersOffsetsDebugFrameSectionBias<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(
+      0x3000, 0x5000, -0x2000);
+}
+
+template <typename Ehdr, typename Phdr, typename ElfInterfaceType>
+void ElfInterfaceTest::CheckGnuEhFrame(uint64_t addr, uint64_t offset, int64_t expected_bias) {
+  std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_));
+
+  Ehdr ehdr = {};
+  ehdr.e_phoff = 0x100;
+  ehdr.e_phnum = 2;
+  ehdr.e_phentsize = sizeof(Phdr);
+  memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+  uint64_t phdr_offset = 0x100;
+
+  Phdr phdr = {};
+  phdr.p_type = PT_LOAD;
+  phdr.p_memsz = 0x10000;
+  phdr.p_flags = PF_R | PF_X;
+  phdr.p_align = 0x1000;
+  memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr));
+  phdr_offset += sizeof(phdr);
+
+  memset(&phdr, 0, sizeof(phdr));
+  phdr.p_type = PT_GNU_EH_FRAME;
+  phdr.p_vaddr = addr;
+  phdr.p_offset = offset;
+  memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr));
+
+  int64_t load_bias = 0;
+  ASSERT_TRUE(elf->Init(&load_bias));
+  EXPECT_EQ(0, load_bias);
+  EXPECT_EQ(expected_bias, elf->eh_frame_hdr_section_bias());
+}
+
+TEST_F(ElfInterfaceTest, eh_frame_zero_section_bias_32) {
+  ElfInterfaceTest::CheckGnuEhFrame<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x4000, 0x4000, 0);
+}
+
+TEST_F(ElfInterfaceTest, eh_frame_zero_section_bias_64) {
+  ElfInterfaceTest::CheckGnuEhFrame<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x4000, 0x4000, 0);
+}
+
+TEST_F(ElfInterfaceTest, eh_frame_positive_section_bias_32) {
+  ElfInterfaceTest::CheckGnuEhFrame<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x4000, 0x1000, 0x3000);
+}
+
+TEST_F(ElfInterfaceTest, eh_frame_positive_section_bias_64) {
+  ElfInterfaceTest::CheckGnuEhFrame<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x4000, 0x1000, 0x3000);
+}
+
+TEST_F(ElfInterfaceTest, eh_frame_negative_section_bias_32) {
+  ElfInterfaceTest::CheckGnuEhFrame<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x4000, 0x5000,
+                                                                            -0x1000);
+}
+
+TEST_F(ElfInterfaceTest, eh_frame_negative_section_bias_64) {
+  ElfInterfaceTest::CheckGnuEhFrame<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x4000, 0x5000,
+                                                                            -0x1000);
+}
+
 TEST_F(ElfInterfaceTest, is_valid_pc_from_pt_load) {
   std::unique_ptr<ElfInterface> elf(new ElfInterface32(&memory_));
 
@@ -1022,9 +1363,9 @@
   phdr.p_align = 0x1000;
   memory_.SetMemory(0x100, &phdr, sizeof(phdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0U, load_bias);
+  EXPECT_EQ(0, load_bias);
   EXPECT_TRUE(elf->IsValidPc(0));
   EXPECT_TRUE(elf->IsValidPc(0x5000));
   EXPECT_TRUE(elf->IsValidPc(0xffff));
@@ -1048,9 +1389,9 @@
   phdr.p_align = 0x1000;
   memory_.SetMemory(0x100, &phdr, sizeof(phdr));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  EXPECT_EQ(0x2000U, load_bias);
+  EXPECT_EQ(0x2000, load_bias);
   EXPECT_FALSE(elf->IsValidPc(0));
   EXPECT_FALSE(elf->IsValidPc(0x1000));
   EXPECT_FALSE(elf->IsValidPc(0x1fff));
@@ -1105,10 +1446,10 @@
   memory_.SetData32(0x708, 0x2100);
   memory_.SetData32(0x70c, 0x200);
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  elf->InitHeaders(0);
-  EXPECT_EQ(0U, load_bias);
+  elf->InitHeaders();
+  EXPECT_EQ(0, load_bias);
   EXPECT_FALSE(elf->IsValidPc(0));
   EXPECT_FALSE(elf->IsValidPc(0x20ff));
   EXPECT_TRUE(elf->IsValidPc(0x2100));
@@ -1162,10 +1503,10 @@
   memory_.SetData32(0x708, 0x20f8);
   memory_.SetData32(0x70c, 0x200);
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
-  elf->InitHeaders(0);
-  EXPECT_EQ(0U, load_bias);
+  elf->InitHeaders();
+  EXPECT_EQ(0, load_bias);
   EXPECT_FALSE(elf->IsValidPc(0));
   EXPECT_FALSE(elf->IsValidPc(0x27ff));
   EXPECT_TRUE(elf->IsValidPc(0x2800));
@@ -1201,7 +1542,6 @@
   note_offset += sizeof("GNU");
   // This part of the note does not contain any trailing '\0'.
   memcpy(&note_section[note_offset], "BUILDID", 7);
-  note_offset += 8;
 
   Shdr shdr = {};
   shdr.sh_type = SHT_NOTE;
@@ -1218,16 +1558,23 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
   memory_.SetMemory(0xb000, note_section, sizeof(note_section));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
   ASSERT_EQ("BUILDID", elf->GetBuildID());
 }
 
+TEST_F(ElfInterfaceTest, build_id_32) {
+  BuildID<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_64) {
+  BuildID<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
 template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
 void ElfInterfaceTest::BuildIDTwoNotes() {
   std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
@@ -1266,7 +1613,6 @@
   note_offset += sizeof("GNU");
   // This part of the note does not contain any trailing '\0'.
   memcpy(&note_section[note_offset], "BUILDID", 7);
-  note_offset += 8;
 
   Shdr shdr = {};
   shdr.sh_type = SHT_NOTE;
@@ -1283,16 +1629,23 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
   memory_.SetMemory(0xb000, note_section, sizeof(note_section));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
   ASSERT_EQ("BUILDID", elf->GetBuildID());
 }
 
+TEST_F(ElfInterfaceTest, build_id_two_notes_32) {
+  BuildIDTwoNotes<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_two_notes_64) {
+  BuildIDTwoNotes<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
 template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
 void ElfInterfaceTest::BuildIDSectionTooSmallForName () {
   std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
@@ -1320,7 +1673,6 @@
   note_offset += sizeof("GNU");
   // This part of the note does not contain any trailing '\0'.
   memcpy(&note_section[note_offset], "BUILDID", 7);
-  note_offset += 8;
 
   Shdr shdr = {};
   shdr.sh_type = SHT_NOTE;
@@ -1337,16 +1689,23 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
   memory_.SetMemory(0xb000, note_section, sizeof(note_section));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
   ASSERT_EQ("", elf->GetBuildID());
 }
 
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_name_32) {
+  BuildIDSectionTooSmallForName<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_name_64) {
+  BuildIDSectionTooSmallForName<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
 template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
 void ElfInterfaceTest::BuildIDSectionTooSmallForDesc () {
   std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
@@ -1374,7 +1733,6 @@
   note_offset += sizeof("GNU");
   // This part of the note does not contain any trailing '\0'.
   memcpy(&note_section[note_offset], "BUILDID", 7);
-  note_offset += 8;
 
   Shdr shdr = {};
   shdr.sh_type = SHT_NOTE;
@@ -1391,16 +1749,23 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
   memory_.SetMemory(0xb000, note_section, sizeof(note_section));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
   ASSERT_EQ("", elf->GetBuildID());
 }
 
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_desc_32) {
+  BuildIDSectionTooSmallForDesc<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_desc_64) {
+  BuildIDSectionTooSmallForDesc<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
 template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
 void ElfInterfaceTest::BuildIDSectionTooSmallForHeader () {
   std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
@@ -1428,7 +1793,6 @@
   note_offset += sizeof("GNU");
   // This part of the note does not contain any trailing '\0'.
   memcpy(&note_section[note_offset], "BUILDID", 7);
-  note_offset += 8;
 
   Shdr shdr = {};
   shdr.sh_type = SHT_NOTE;
@@ -1445,54 +1809,158 @@
   shdr.sh_offset = 0xf000;
   shdr.sh_size = 0x1000;
   memory_.SetMemory(offset, &shdr, sizeof(shdr));
-  offset += ehdr.e_shentsize;
 
   memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
   memory_.SetMemory(0xb000, note_section, sizeof(note_section));
 
-  uint64_t load_bias = 0;
+  int64_t load_bias = 0;
   ASSERT_TRUE(elf->Init(&load_bias));
   ASSERT_EQ("", elf->GetBuildID());
 }
 
-TEST_F(ElfInterfaceTest, build_id32) {
-  BuildID<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
-}
-
-TEST_F(ElfInterfaceTest, build_id64) {
-  BuildID<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_two_notes32) {
-  BuildIDTwoNotes<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_two_notes64) {
-  BuildIDTwoNotes<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_section_too_small_for_name32) {
-  BuildIDSectionTooSmallForName<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_section_too_small_for_name64) {
-  BuildIDSectionTooSmallForName<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_section_too_small_for_desc32) {
-  BuildIDSectionTooSmallForDesc<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_section_too_small_for_desc64) {
-  BuildIDSectionTooSmallForDesc<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
-}
-
-TEST_F(ElfInterfaceTest, build_id_section_too_small_for_header32) {
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_header_32) {
   BuildIDSectionTooSmallForHeader<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
 }
 
-TEST_F(ElfInterfaceTest, build_id_section_too_small_for_header64) {
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_header_64) {
   BuildIDSectionTooSmallForHeader<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
 }
 
+template <typename Ehdr, typename Phdr, typename ElfInterfaceType>
+void ElfInterfaceTest::CheckLoadBiasInFirstPhdr(int64_t load_bias) {
+  Ehdr ehdr = {};
+  ehdr.e_phoff = 0x100;
+  ehdr.e_phnum = 2;
+  ehdr.e_phentsize = sizeof(Phdr);
+  memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+  Phdr phdr = {};
+  phdr.p_type = PT_LOAD;
+  phdr.p_offset = 0;
+  phdr.p_vaddr = load_bias;
+  phdr.p_memsz = 0x10000;
+  phdr.p_flags = PF_R | PF_X;
+  phdr.p_align = 0x1000;
+  memory_.SetMemory(0x100, &phdr, sizeof(phdr));
+
+  memset(&phdr, 0, sizeof(phdr));
+  phdr.p_type = PT_LOAD;
+  phdr.p_offset = 0x1000;
+  phdr.p_memsz = 0x2000;
+  phdr.p_flags = PF_R | PF_X;
+  phdr.p_align = 0x1000;
+  memory_.SetMemory(0x100 + sizeof(phdr), &phdr, sizeof(phdr));
+
+  int64_t static_load_bias = ElfInterface::GetLoadBias<Ehdr, Phdr>(&memory_);
+  ASSERT_EQ(load_bias, static_load_bias);
+
+  std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+  int64_t init_load_bias = 0;
+  ASSERT_TRUE(elf->Init(&init_load_bias));
+  ASSERT_EQ(init_load_bias, static_load_bias);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_zero_32) {
+  CheckLoadBiasInFirstPhdr<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_zero_64) {
+  CheckLoadBiasInFirstPhdr<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_non_zero_32) {
+  CheckLoadBiasInFirstPhdr<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x1000);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_non_zero_64) {
+  CheckLoadBiasInFirstPhdr<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x1000);
+}
+
+template <typename Ehdr, typename Phdr, typename ElfInterfaceType>
+void ElfInterfaceTest::CheckLoadBiasInFirstExecPhdr(uint64_t offset, uint64_t vaddr,
+                                                    int64_t load_bias) {
+  Ehdr ehdr = {};
+  ehdr.e_phoff = 0x100;
+  ehdr.e_phnum = 3;
+  ehdr.e_phentsize = sizeof(Phdr);
+  memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+  Phdr phdr = {};
+  phdr.p_type = PT_LOAD;
+  phdr.p_memsz = 0x10000;
+  phdr.p_flags = PF_R;
+  phdr.p_align = 0x1000;
+  memory_.SetMemory(0x100, &phdr, sizeof(phdr));
+
+  memset(&phdr, 0, sizeof(phdr));
+  phdr.p_type = PT_LOAD;
+  phdr.p_offset = offset;
+  phdr.p_vaddr = vaddr;
+  phdr.p_memsz = 0x2000;
+  phdr.p_flags = PF_R | PF_X;
+  phdr.p_align = 0x1000;
+  memory_.SetMemory(0x100 + sizeof(phdr), &phdr, sizeof(phdr));
+
+  // Second executable load should be ignored for load bias computation.
+  memset(&phdr, 0, sizeof(phdr));
+  phdr.p_type = PT_LOAD;
+  phdr.p_offset = 0x1234;
+  phdr.p_vaddr = 0x2000;
+  phdr.p_memsz = 0x2000;
+  phdr.p_flags = PF_R | PF_X;
+  phdr.p_align = 0x1000;
+  memory_.SetMemory(0x200 + sizeof(phdr), &phdr, sizeof(phdr));
+
+  int64_t static_load_bias = ElfInterface::GetLoadBias<Ehdr, Phdr>(&memory_);
+  ASSERT_EQ(load_bias, static_load_bias);
+
+  std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+  int64_t init_load_bias = 0;
+  ASSERT_TRUE(elf->Init(&init_load_bias));
+  ASSERT_EQ(init_load_bias, static_load_bias);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_exec_zero_32) {
+  CheckLoadBiasInFirstExecPhdr<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x1000, 0x1000, 0);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_exec_zero_64) {
+  CheckLoadBiasInFirstExecPhdr<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x1000, 0x1000, 0);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_exec_positive_32) {
+  CheckLoadBiasInFirstExecPhdr<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x1000, 0x4000, 0x3000);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_exec_positive_64) {
+  CheckLoadBiasInFirstExecPhdr<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x1000, 0x4000, 0x3000);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_exec_negative_32) {
+  CheckLoadBiasInFirstExecPhdr<Elf32_Ehdr, Elf32_Phdr, ElfInterface32>(0x5000, 0x1000, -0x4000);
+}
+
+TEST_F(ElfInterfaceTest, get_load_bias_exec_negative_64) {
+  CheckLoadBiasInFirstExecPhdr<Elf64_Ehdr, Elf64_Phdr, ElfInterface64>(0x5000, 0x1000, -0x4000);
+}
+
+TEST_F(ElfInterfaceTest, huge_gnu_debugdata_size) {
+  ElfInterfaceFake interface(nullptr);
+
+  interface.FakeSetGnuDebugdataOffset(0x1000);
+  interface.FakeSetGnuDebugdataSize(0xffffffffffffffffUL);
+  ASSERT_TRUE(interface.CreateGnuDebugdataMemory() == nullptr);
+
+  interface.FakeSetGnuDebugdataSize(0x4000000000000UL);
+  ASSERT_TRUE(interface.CreateGnuDebugdataMemory() == nullptr);
+
+  // This should exceed the size_t value of the first allocation.
+#if defined(__LP64__)
+  interface.FakeSetGnuDebugdataSize(0x3333333333333334ULL);
+#else
+  interface.FakeSetGnuDebugdataSize(0x33333334);
+#endif
+  ASSERT_TRUE(interface.CreateGnuDebugdataMemory() == nullptr);
+}
+
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/ElfTest.cpp b/libunwindstack/tests/ElfTest.cpp
index c432d6d..1f3ed81 100644
--- a/libunwindstack/tests/ElfTest.cpp
+++ b/libunwindstack/tests/ElfTest.cpp
@@ -104,6 +104,8 @@
     memory_->SetMemory(0x100, &phdr, sizeof(phdr));
   }
 
+  void VerifyStepIfSignalHandler(uint64_t load_bias);
+
   MemoryFake* memory_;
 };
 
@@ -273,7 +275,7 @@
   elf.FakeSetInterface(interface);
 
   elf.FakeSetValid(true);
-  MapInfo map_info(nullptr, 0x1000, 0x2000, 0, 0, "");
+  MapInfo map_info(nullptr, nullptr, 0x1000, 0x2000, 0, 0, "");
 
   ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info));
 
@@ -281,7 +283,7 @@
   ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info));
 }
 
-TEST_F(ElfTest, step_in_signal_map) {
+void ElfTest::VerifyStepIfSignalHandler(uint64_t load_bias) {
   ElfFake elf(memory_);
 
   RegsArm regs;
@@ -290,6 +292,7 @@
 
   ElfInterfaceFake* interface = new ElfInterfaceFake(memory_);
   elf.FakeSetInterface(interface);
+  elf.FakeSetLoadBias(load_bias);
 
   memory_->SetData32(0x3000, 0xdf0027ad);
   MemoryFake process_memory;
@@ -299,30 +302,42 @@
   }
 
   elf.FakeSetValid(true);
-  ASSERT_TRUE(elf.StepIfSignalHandler(0x3000, &regs, &process_memory));
+  ASSERT_TRUE(elf.StepIfSignalHandler(0x3000 + load_bias, &regs, &process_memory));
   EXPECT_EQ(ERROR_NONE, elf.GetLastErrorCode());
   EXPECT_EQ(15U, regs.pc());
   EXPECT_EQ(13U, regs.sp());
 }
 
+TEST_F(ElfTest, step_in_signal_map) {
+  VerifyStepIfSignalHandler(0);
+}
+
+TEST_F(ElfTest, step_in_signal_map_non_zero_load_bias) {
+  VerifyStepIfSignalHandler(0x1000);
+}
+
 class ElfInterfaceMock : public ElfInterface {
  public:
   ElfInterfaceMock(Memory* memory) : ElfInterface(memory) {}
   virtual ~ElfInterfaceMock() = default;
 
-  bool Init(uint64_t*) override { return false; }
-  void InitHeaders(uint64_t) override {}
+  bool Init(int64_t*) override { return false; }
+  void InitHeaders() override {}
   std::string GetSoname() override { return ""; }
   bool GetFunctionName(uint64_t, std::string*, uint64_t*) override { return false; }
   std::string GetBuildID() override { return ""; }
 
-  MOCK_METHOD4(Step, bool(uint64_t, Regs*, Memory*, bool*));
-  MOCK_METHOD2(GetGlobalVariable, bool(const std::string&, uint64_t*));
-  MOCK_METHOD1(IsValidPc, bool(uint64_t));
+  MOCK_METHOD(bool, Step, (uint64_t, Regs*, Memory*, bool*), (override));
+  MOCK_METHOD(bool, GetGlobalVariable, (const std::string&, uint64_t*), (override));
+  MOCK_METHOD(bool, IsValidPc, (uint64_t), (override));
+
+  void MockSetDataOffset(uint64_t offset) { data_offset_ = offset; }
+  void MockSetDataVaddrStart(uint64_t vaddr) { data_vaddr_start_ = vaddr; }
+  void MockSetDataVaddrEnd(uint64_t vaddr) { data_vaddr_end_ = vaddr; }
 
   void MockSetDynamicOffset(uint64_t offset) { dynamic_offset_ = offset; }
-  void MockSetDynamicVaddr(uint64_t vaddr) { dynamic_vaddr_ = vaddr; }
-  void MockSetDynamicSize(uint64_t size) { dynamic_size_ = size; }
+  void MockSetDynamicVaddrStart(uint64_t vaddr) { dynamic_vaddr_start_ = vaddr; }
+  void MockSetDynamicVaddrEnd(uint64_t vaddr) { dynamic_vaddr_end_ = vaddr; }
 };
 
 TEST_F(ElfTest, step_in_interface) {
@@ -348,7 +363,7 @@
 
   std::string global("something");
   uint64_t offset;
-  ASSERT_FALSE(elf.GetGlobalVariable(global, &offset));
+  ASSERT_FALSE(elf.GetGlobalVariableOffset(global, &offset));
 }
 
 TEST_F(ElfTest, get_global_valid_not_in_interface) {
@@ -358,119 +373,69 @@
   ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
   elf.FakeSetInterface(interface);
 
-  uint64_t offset;
   std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)).WillOnce(::testing::Return(false));
+  EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_))
+      .WillOnce(::testing::Return(false));
 
-  ASSERT_FALSE(elf.GetGlobalVariable(global, &offset));
+  uint64_t offset;
+  ASSERT_FALSE(elf.GetGlobalVariableOffset(global, &offset));
 }
 
-TEST_F(ElfTest, get_global_valid_below_load_bias) {
+TEST_F(ElfTest, get_global_vaddr_in_no_sections) {
   ElfFake elf(memory_);
   elf.FakeSetValid(true);
-  elf.FakeSetLoadBias(0x1000);
 
   ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
   elf.FakeSetInterface(interface);
 
-  uint64_t offset;
   std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset))
+  EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_))
       .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true)));
 
-  ASSERT_FALSE(elf.GetGlobalVariable(global, &offset));
-}
-
-TEST_F(ElfTest, get_global_valid_dynamic_zero_non_zero_load_bias) {
-  ElfFake elf(memory_);
-  elf.FakeSetValid(true);
-  elf.FakeSetLoadBias(0x100);
-
-  ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
-  elf.FakeSetInterface(interface);
-
   uint64_t offset;
-  std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset))
-      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true)));
-
-  ASSERT_TRUE(elf.GetGlobalVariable(global, &offset));
-  EXPECT_EQ(0x200U, offset);
+  ASSERT_FALSE(elf.GetGlobalVariableOffset(global, &offset));
 }
 
-TEST_F(ElfTest, get_global_valid_dynamic_zero) {
+TEST_F(ElfTest, get_global_vaddr_in_data_section) {
   ElfFake elf(memory_);
   elf.FakeSetValid(true);
 
   ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
   elf.FakeSetInterface(interface);
+  interface->MockSetDataVaddrStart(0x500);
+  interface->MockSetDataVaddrEnd(0x600);
+  interface->MockSetDataOffset(0xa000);
 
-  ElfInterfaceMock* gnu_interface = new ElfInterfaceMock(memory_);
-  elf.FakeSetGnuDebugdataInterface(gnu_interface);
+  std::string global("something");
+  EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_))
+      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x580), ::testing::Return(true)));
 
   uint64_t offset;
-  std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)).WillOnce(::testing::Return(false));
-
-  EXPECT_CALL(*gnu_interface, GetGlobalVariable(global, &offset))
-      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x500), ::testing::Return(true)));
-
-  ASSERT_TRUE(elf.GetGlobalVariable(global, &offset));
-  EXPECT_EQ(0x500U, offset);
+  ASSERT_TRUE(elf.GetGlobalVariableOffset(global, &offset));
+  EXPECT_EQ(0xa080U, offset);
 }
 
-TEST_F(ElfTest, get_global_valid_in_gnu_debugdata_dynamic_zero) {
+TEST_F(ElfTest, get_global_vaddr_in_dynamic_section) {
   ElfFake elf(memory_);
   elf.FakeSetValid(true);
 
   ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
   elf.FakeSetInterface(interface);
+  interface->MockSetDataVaddrStart(0x500);
+  interface->MockSetDataVaddrEnd(0x600);
+  interface->MockSetDataOffset(0xa000);
+
+  interface->MockSetDynamicVaddrStart(0x800);
+  interface->MockSetDynamicVaddrEnd(0x900);
+  interface->MockSetDynamicOffset(0xc000);
+
+  std::string global("something");
+  EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_))
+      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x880), ::testing::Return(true)));
 
   uint64_t offset;
-  std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset))
-      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true)));
-
-  ASSERT_TRUE(elf.GetGlobalVariable(global, &offset));
-  EXPECT_EQ(0x300U, offset);
-}
-
-TEST_F(ElfTest, get_global_valid_dynamic_adjust_negative) {
-  ElfFake elf(memory_);
-  elf.FakeSetValid(true);
-
-  ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
-  interface->MockSetDynamicOffset(0x400);
-  interface->MockSetDynamicVaddr(0x800);
-  interface->MockSetDynamicSize(0x100);
-  elf.FakeSetInterface(interface);
-
-  uint64_t offset;
-  std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset))
-      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x850), ::testing::Return(true)));
-
-  ASSERT_TRUE(elf.GetGlobalVariable(global, &offset));
-  EXPECT_EQ(0x450U, offset);
-}
-
-TEST_F(ElfTest, get_global_valid_dynamic_adjust_positive) {
-  ElfFake elf(memory_);
-  elf.FakeSetValid(true);
-
-  ElfInterfaceMock* interface = new ElfInterfaceMock(memory_);
-  interface->MockSetDynamicOffset(0x1000);
-  interface->MockSetDynamicVaddr(0x800);
-  interface->MockSetDynamicSize(0x100);
-  elf.FakeSetInterface(interface);
-
-  uint64_t offset;
-  std::string global("something");
-  EXPECT_CALL(*interface, GetGlobalVariable(global, &offset))
-      .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x850), ::testing::Return(true)));
-
-  ASSERT_TRUE(elf.GetGlobalVariable(global, &offset));
-  EXPECT_EQ(0x1050U, offset);
+  ASSERT_TRUE(elf.GetGlobalVariableOffset(global, &offset));
+  EXPECT_EQ(0xc080U, offset);
 }
 
 TEST_F(ElfTest, is_valid_pc_elf_invalid) {
diff --git a/libunwindstack/tests/IsolatedSettings.cpp b/libunwindstack/tests/IsolatedSettings.cpp
new file mode 100644
index 0000000..dbd8bd6
--- /dev/null
+++ b/libunwindstack/tests/IsolatedSettings.cpp
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+
+extern "C" bool GetInitialArgs(const char*** args, size_t* num_args) {
+  static const char* initial_args[2] = {"--slow_threshold_ms=90000",
+                                        "--deadline_threshold_ms=120000"};
+  *args = initial_args;
+  *num_args = 2;
+  return true;
+}
diff --git a/libunwindstack/tests/JitDebugTest.cpp b/libunwindstack/tests/JitDebugTest.cpp
index b1ca111..9b32a3a 100644
--- a/libunwindstack/tests/JitDebugTest.cpp
+++ b/libunwindstack/tests/JitDebugTest.cpp
@@ -35,13 +35,17 @@
 
 class JitDebugTest : public ::testing::Test {
  protected:
-  void CreateFakeElf(MapInfo* map_info) {
+  void CreateFakeElf(MapInfo* map_info, uint64_t global_offset, uint64_t data_offset,
+                     uint64_t data_vaddr, uint64_t data_size) {
     MemoryFake* memory = new MemoryFake;
     ElfFake* elf = new ElfFake(memory);
     elf->FakeSetValid(true);
     ElfInterfaceFake* interface = new ElfInterfaceFake(memory);
     elf->FakeSetInterface(interface);
-    interface->FakeSetGlobalVariable("__jit_debug_descriptor", 0x800);
+    interface->FakeSetGlobalVariable("__jit_debug_descriptor", global_offset);
+    interface->FakeSetDataOffset(data_offset);
+    interface->FakeSetDataVaddrStart(data_vaddr);
+    interface->FakeSetDataVaddrEnd(data_vaddr + data_size);
     map_info->elf.reset(elf);
   }
 
@@ -52,27 +56,27 @@
     maps_.reset(
         new BufferMaps("1000-4000 ---s 00000000 00:00 0 /fake/elf1\n"
                        "4000-6000 r--s 00000000 00:00 0 /fake/elf1\n"
-                       "6000-8000 -wxs 00000000 00:00 0 /fake/elf1\n"
+                       "6000-8000 -wxs 00002000 00:00 0 /fake/elf1\n"
                        "a000-c000 --xp 00000000 00:00 0 /fake/elf2\n"
-                       "c000-f000 rw-p 00001000 00:00 0 /fake/elf2\n"
+                       "c000-f000 rw-p 00002000 00:00 0 /fake/elf2\n"
                        "f000-11000 r--p 00000000 00:00 0 /fake/elf3\n"
-                       "11000-12000 rw-p 00001000 00:00 0 /fake/elf3\n"
+                       "11000-12000 rw-p 00002000 00:00 0 /fake/elf3\n"
                        "12000-14000 r--p 00000000 00:00 0 /fake/elf4\n"
-                       "100000-110000 rw-p 0001000 00:00 0 /fake/elf4\n"
-                       "200000-210000 rw-p 0002000 00:00 0 /fake/elf4\n"));
+                       "100000-110000 rw-p 00ee000 00:00 0 /fake/elf4\n"
+                       "200000-210000 rw-p 01ee000 00:00 0 /fake/elf4\n"));
     ASSERT_TRUE(maps_->Parse());
 
     MapInfo* map_info = maps_->Get(3);
     ASSERT_TRUE(map_info != nullptr);
-    CreateFakeElf(map_info);
+    CreateFakeElf(map_info, 0x2800, 0x2000, 0x2000, 0x3000);
 
     map_info = maps_->Get(5);
     ASSERT_TRUE(map_info != nullptr);
-    CreateFakeElf(map_info);
+    CreateFakeElf(map_info, 0x2800, 0x2000, 0x2000, 0x3000);
 
     map_info = maps_->Get(7);
     ASSERT_TRUE(map_info != nullptr);
-    CreateFakeElf(map_info);
+    CreateFakeElf(map_info, 0xee800, 0xee000, 0xee000, 0x10000);
   }
 
   void SetUp() override {
@@ -258,7 +262,7 @@
 TEST_F(JitDebugTest, get_elf_no_valid_code_entry) {
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x11800, 0x200000);
 
   Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
   ASSERT_TRUE(elf == nullptr);
@@ -267,7 +271,7 @@
 TEST_F(JitDebugTest, get_elf_invalid_descriptor_first_entry) {
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
 
-  WriteDescriptor32(0xf800, 0);
+  WriteDescriptor32(0x11800, 0);
 
   Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
   ASSERT_TRUE(elf == nullptr);
@@ -276,9 +280,9 @@
 TEST_F(JitDebugTest, get_elf_invalid_descriptor_version) {
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
 
-  WriteDescriptor32(0xf800, 0x20000);
+  WriteDescriptor32(0x11800, 0x20000);
   // Set the version to an invalid value.
-  memory_->SetData32(0xf800, 2);
+  memory_->SetData32(0x11800, 2);
 
   Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
   ASSERT_TRUE(elf == nullptr);
@@ -287,7 +291,7 @@
 TEST_F(JitDebugTest, get_elf_32) {
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x11800, 0x200000);
   WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
 
   Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
@@ -304,16 +308,16 @@
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x5000, ELFCLASS32, EM_ARM, 0x2000, 0x300);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x11800, 0x200000);
   WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
-  WriteDescriptor32(0x12800, 0x201000);
+  WriteDescriptor32(0x100800, 0x201000);
   WriteEntry32Pad(0x201000, 0, 0, 0x5000, 0x1000);
 
   ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) != nullptr);
   ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x2000) == nullptr);
 
   // Now clear the descriptor entry for the first one.
-  WriteDescriptor32(0xf800, 0);
+  WriteDescriptor32(0x11800, 0);
   jit_debug_.reset(new JitDebug(process_memory_));
   jit_debug_->SetArch(ARCH_ARM);
 
@@ -326,7 +330,7 @@
 
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x11800, 0x200000);
   WriteEntry32Pack(0x200000, 0, 0, 0x4000, 0x1000);
 
   jit_debug_->SetArch(ARCH_X86);
@@ -345,7 +349,7 @@
 
   CreateElf<Elf64_Ehdr, Elf64_Shdr>(0x4000, ELFCLASS64, EM_AARCH64, 0x1500, 0x200);
 
-  WriteDescriptor64(0xf800, 0x200000);
+  WriteDescriptor64(0x11800, 0x200000);
   WriteEntry64(0x200000, 0, 0, 0x4000, 0x1000);
 
   Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
@@ -362,7 +366,7 @@
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x5000, ELFCLASS32, EM_ARM, 0x2300, 0x400);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x11800, 0x200000);
   WriteEntry32Pad(0x200000, 0, 0x200100, 0x4000, 0x1000);
   WriteEntry32Pad(0x200100, 0x200100, 0, 0x5000, 0x1000);
 
@@ -385,7 +389,7 @@
 TEST_F(JitDebugTest, get_elf_search_libs) {
   CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
 
-  WriteDescriptor32(0xf800, 0x200000);
+  WriteDescriptor32(0x11800, 0x200000);
   WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
 
   // Only search a given named list of libs.
diff --git a/libunwindstack/tests/LocalUnwinderTest.cpp b/libunwindstack/tests/LocalUnwinderTest.cpp
index 56a18cd..9936f7a 100644
--- a/libunwindstack/tests/LocalUnwinderTest.cpp
+++ b/libunwindstack/tests/LocalUnwinderTest.cpp
@@ -170,10 +170,10 @@
 
   std::string testlib(testing::internal::GetArgvs()[0]);
   auto const value = testlib.find_last_of('/');
-  if (value == std::string::npos) {
-    testlib = "../";
+  if (value != std::string::npos) {
+    testlib = testlib.substr(0, value + 1);
   } else {
-    testlib = testlib.substr(0, value + 1) + "../";
+    testlib = "";
   }
   testlib += "libunwindstack_local.so";
 
diff --git a/libunwindstack/tests/LocalUpdatableMapsTest.cpp b/libunwindstack/tests/LocalUpdatableMapsTest.cpp
new file mode 100644
index 0000000..99afb0b
--- /dev/null
+++ b/libunwindstack/tests/LocalUpdatableMapsTest.cpp
@@ -0,0 +1,373 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <sys/mman.h>
+
+#include <string>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#include <android-base/file.h>
+#include <unwindstack/Maps.h>
+
+namespace unwindstack {
+
+class TestUpdatableMaps : public LocalUpdatableMaps {
+ public:
+  TestUpdatableMaps() : LocalUpdatableMaps() {}
+  virtual ~TestUpdatableMaps() = default;
+
+  const std::string GetMapsFile() const override { return maps_file_; }
+
+  void TestSetMapsFile(const std::string& maps_file) { maps_file_ = maps_file; }
+
+  const std::vector<std::unique_ptr<MapInfo>>& TestGetSavedMaps() { return saved_maps_; }
+
+ private:
+  std::string maps_file_;
+};
+
+class LocalUpdatableMapsTest : public ::testing::Test {
+ protected:
+  static const std::string GetDefaultMapString() {
+    return "3000-4000 r-xp 00000 00:00 0\n8000-9000 r-xp 00000 00:00 0\n";
+  }
+
+  void SetUp() override {
+    TemporaryFile tf;
+    ASSERT_TRUE(android::base::WriteStringToFile(GetDefaultMapString(), tf.path));
+
+    maps_.TestSetMapsFile(tf.path);
+    ASSERT_TRUE(maps_.Parse());
+    ASSERT_EQ(2U, maps_.Total());
+
+    MapInfo* map_info = maps_.Get(0);
+    ASSERT_TRUE(map_info != nullptr);
+    EXPECT_EQ(0x3000U, map_info->start);
+    EXPECT_EQ(0x4000U, map_info->end);
+    EXPECT_EQ(0U, map_info->offset);
+    EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+    EXPECT_TRUE(map_info->name.empty());
+
+    map_info = maps_.Get(1);
+    ASSERT_TRUE(map_info != nullptr);
+    EXPECT_EQ(0x8000U, map_info->start);
+    EXPECT_EQ(0x9000U, map_info->end);
+    EXPECT_EQ(0U, map_info->offset);
+    EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+    EXPECT_TRUE(map_info->name.empty());
+  }
+
+  TestUpdatableMaps maps_;
+};
+
+TEST_F(LocalUpdatableMapsTest, same_map) {
+  TemporaryFile tf;
+  ASSERT_TRUE(android::base::WriteStringToFile(GetDefaultMapString(), tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(2U, maps_.Total());
+  EXPECT_EQ(0U, maps_.TestGetSavedMaps().size());
+
+  MapInfo* map_info = maps_.Get(0);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = maps_.Get(1);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x8000U, map_info->start);
+  EXPECT_EQ(0x9000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+}
+
+TEST_F(LocalUpdatableMapsTest, same_map_new_perms) {
+  TemporaryFile tf;
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("3000-4000 rwxp 00000 00:00 0\n"
+                                       "8000-9000 r-xp 00000 00:00 0\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(2U, maps_.Total());
+
+  MapInfo* map_info = maps_.Get(0);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = maps_.Get(1);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x8000U, map_info->start);
+  EXPECT_EQ(0x9000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  auto& saved_maps = maps_.TestGetSavedMaps();
+  ASSERT_EQ(1U, saved_maps.size());
+  map_info = saved_maps[0].get();
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+}
+
+TEST_F(LocalUpdatableMapsTest, same_map_new_name) {
+  TemporaryFile tf;
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n"
+                                       "8000-9000 r-xp 00000 00:00 0\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(2U, maps_.Total());
+
+  MapInfo* map_info = maps_.Get(0);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_EQ("/fake/lib.so", map_info->name);
+
+  map_info = maps_.Get(1);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x8000U, map_info->start);
+  EXPECT_EQ(0x9000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  auto& saved_maps = maps_.TestGetSavedMaps();
+  ASSERT_EQ(1U, saved_maps.size());
+  map_info = saved_maps[0].get();
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+}
+
+TEST_F(LocalUpdatableMapsTest, only_add_maps) {
+  TemporaryFile tf;
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("1000-2000 r-xp 00000 00:00 0\n"
+                                       "3000-4000 r-xp 00000 00:00 0\n"
+                                       "8000-9000 r-xp 00000 00:00 0\n"
+                                       "a000-f000 r-xp 00000 00:00 0\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(4U, maps_.Total());
+  EXPECT_EQ(0U, maps_.TestGetSavedMaps().size());
+
+  MapInfo* map_info = maps_.Get(0);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x1000U, map_info->start);
+  EXPECT_EQ(0x2000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = maps_.Get(1);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = maps_.Get(2);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x8000U, map_info->start);
+  EXPECT_EQ(0x9000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = maps_.Get(3);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0xa000U, map_info->start);
+  EXPECT_EQ(0xf000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+}
+
+TEST_F(LocalUpdatableMapsTest, all_new_maps) {
+  TemporaryFile tf;
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("1000-2000 r-xp 00000 00:00 0\n"
+                                       "a000-f000 r-xp 00000 00:00 0\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(2U, maps_.Total());
+
+  MapInfo* map_info = maps_.Get(0);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x1000U, map_info->start);
+  EXPECT_EQ(0x2000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = maps_.Get(1);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0xa000U, map_info->start);
+  EXPECT_EQ(0xf000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  auto& saved_maps = maps_.TestGetSavedMaps();
+  ASSERT_EQ(2U, saved_maps.size());
+  map_info = saved_maps[0].get();
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x3000U, map_info->start);
+  EXPECT_EQ(0x4000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+
+  map_info = saved_maps[1].get();
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x8000U, map_info->start);
+  EXPECT_EQ(0x9000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+}
+
+TEST_F(LocalUpdatableMapsTest, add_map_prev_name_updated) {
+  TemporaryFile tf;
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("3000-4000 rwxp 00000 00:00 0\n"
+                                       "8000-9000 r-xp 00000 00:00 0\n"
+                                       "9000-a000 r-xp 00000 00:00 0\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(3U, maps_.Total());
+
+  MapInfo* map_info = maps_.Get(2);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x9000U, map_info->start);
+  EXPECT_EQ(0xA000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_TRUE(map_info->name.empty());
+  EXPECT_EQ(maps_.Get(1), map_info->prev_map);
+}
+
+TEST_F(LocalUpdatableMapsTest, add_map_prev_real_name_updated) {
+  TemporaryFile tf;
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n"
+                                       "4000-5000 ---p 00000 00:00 0\n"
+                                       "7000-8000 r-xp 00000 00:00 0 /fake/lib1.so\n"
+                                       "8000-9000 ---p 00000 00:00 0\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(4U, maps_.Total());
+
+  MapInfo* map_info = maps_.Get(2);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x7000U, map_info->start);
+  EXPECT_EQ(0x8000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_EQ(maps_.Get(0), map_info->prev_real_map);
+  EXPECT_EQ(maps_.Get(1), map_info->prev_map);
+  EXPECT_EQ("/fake/lib1.so", map_info->name);
+
+  map_info = maps_.Get(3);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x8000U, map_info->start);
+  EXPECT_EQ(0x9000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_TRUE(map_info->IsBlank());
+  EXPECT_EQ(maps_.Get(2), map_info->prev_real_map);
+  EXPECT_EQ(maps_.Get(2), map_info->prev_map);
+  EXPECT_TRUE(map_info->name.empty());
+
+  ASSERT_TRUE(
+      android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n"
+                                       "4000-5000 ---p 00000 00:00 0\n"
+                                       "7000-8000 r-xp 00000 00:00 0 /fake/lib1.so\n"
+                                       "8000-9000 ---p 00000 00:00 0\n"
+                                       "9000-a000 r-xp 00000 00:00 0 /fake/lib2.so\n"
+                                       "a000-b000 r-xp 00000 00:00 0 /fake/lib3.so\n",
+                                       tf.path));
+
+  maps_.TestSetMapsFile(tf.path);
+  ASSERT_TRUE(maps_.Reparse());
+  ASSERT_EQ(6U, maps_.Total());
+
+  map_info = maps_.Get(2);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x7000U, map_info->start);
+  EXPECT_EQ(0x8000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_EQ("/fake/lib1.so", map_info->name);
+  EXPECT_EQ(maps_.Get(1), map_info->prev_map);
+  EXPECT_EQ(maps_.Get(0), map_info->prev_real_map);
+
+  map_info = maps_.Get(4);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0x9000U, map_info->start);
+  EXPECT_EQ(0xA000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_EQ("/fake/lib2.so", map_info->name);
+  EXPECT_EQ(maps_.Get(3), map_info->prev_map);
+  EXPECT_EQ(maps_.Get(2), map_info->prev_real_map);
+
+  map_info = maps_.Get(5);
+  ASSERT_TRUE(map_info != nullptr);
+  EXPECT_EQ(0xA000U, map_info->start);
+  EXPECT_EQ(0xB000U, map_info->end);
+  EXPECT_EQ(0U, map_info->offset);
+  EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags);
+  EXPECT_EQ("/fake/lib3.so", map_info->name);
+  EXPECT_EQ(maps_.Get(4), map_info->prev_map);
+  EXPECT_EQ(maps_.Get(4), map_info->prev_real_map);
+}
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MapInfoCreateMemoryTest.cpp b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
index 6be8bdc..6d8d58e 100644
--- a/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
+++ b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
@@ -58,7 +58,7 @@
     ASSERT_TRUE(android::base::WriteFully(fd, buffer.data(), buffer.size()));
   }
 
-  static void SetUpTestCase() {
+  void SetUp() override {
     std::vector<uint8_t> buffer(12288, 0);
     memcpy(buffer.data(), ELFMAG, SELFMAG);
     buffer[EI_CLASS] = ELFCLASS32;
@@ -72,9 +72,7 @@
 
     InitElf<Elf32_Ehdr, Elf32_Shdr>(elf32_at_map_.fd, 0x1000, 0x2000, ELFCLASS32);
     InitElf<Elf64_Ehdr, Elf64_Shdr>(elf64_at_map_.fd, 0x2000, 0x3000, ELFCLASS64);
-  }
 
-  void SetUp() override {
     memory_ = new MemoryFake;
     process_memory_.reset(memory_);
   }
@@ -82,20 +80,16 @@
   MemoryFake* memory_;
   std::shared_ptr<Memory> process_memory_;
 
-  static TemporaryFile elf_;
+  TemporaryFile elf_;
 
-  static TemporaryFile elf_at_1000_;
+  TemporaryFile elf_at_1000_;
 
-  static TemporaryFile elf32_at_map_;
-  static TemporaryFile elf64_at_map_;
+  TemporaryFile elf32_at_map_;
+  TemporaryFile elf64_at_map_;
 };
-TemporaryFile MapInfoCreateMemoryTest::elf_;
-TemporaryFile MapInfoCreateMemoryTest::elf_at_1000_;
-TemporaryFile MapInfoCreateMemoryTest::elf32_at_map_;
-TemporaryFile MapInfoCreateMemoryTest::elf64_at_map_;
 
 TEST_F(MapInfoCreateMemoryTest, end_le_start) {
-  MapInfo info(nullptr, 0x100, 0x100, 0, 0, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x100, 0x100, 0, 0, elf_.path);
 
   std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
   ASSERT_TRUE(memory.get() == nullptr);
@@ -114,7 +108,7 @@
 // Verify that if the offset is non-zero but there is no elf at the offset,
 // that the full file is used.
 TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_full_file) {
-  MapInfo info(nullptr, 0x100, 0x200, 0x100, 0, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x100, 0x200, 0x100, 0, elf_.path);
 
   std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
   ASSERT_TRUE(memory.get() != nullptr);
@@ -135,8 +129,9 @@
 
   // Now verify the elf start offset is set correctly based on the previous
   // info.
-  MapInfo prev_info(nullptr, 0, 0x100, 0x10, 0, "");
+  MapInfo prev_info(nullptr, nullptr, 0, 0x100, 0x10, 0, "");
   info.prev_map = &prev_info;
+  info.prev_real_map = &prev_info;
 
   // No preconditions met, change each one until it should set the elf start
   // offset to zero.
@@ -183,7 +178,7 @@
 // Verify that if the offset is non-zero and there is an elf at that
 // offset, that only part of the file is used.
 TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_partial_file) {
-  MapInfo info(nullptr, 0x100, 0x200, 0x1000, 0, elf_at_1000_.path);
+  MapInfo info(nullptr, nullptr, 0x100, 0x200, 0x1000, 0, elf_at_1000_.path);
 
   std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
   ASSERT_TRUE(memory.get() != nullptr);
@@ -208,7 +203,7 @@
 // embedded elf is bigger than the initial map, the new object is larger
 // than the original map size. Do this for a 32 bit elf and a 64 bit elf.
 TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_partial_file_whole_elf32) {
-  MapInfo info(nullptr, 0x5000, 0x6000, 0x1000, 0, elf32_at_map_.path);
+  MapInfo info(nullptr, nullptr, 0x5000, 0x6000, 0x1000, 0, elf32_at_map_.path);
 
   std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
   ASSERT_TRUE(memory.get() != nullptr);
@@ -226,7 +221,7 @@
 }
 
 TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_partial_file_whole_elf64) {
-  MapInfo info(nullptr, 0x7000, 0x8000, 0x2000, 0, elf64_at_map_.path);
+  MapInfo info(nullptr, nullptr, 0x7000, 0x8000, 0x2000, 0, elf64_at_map_.path);
 
   std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
   ASSERT_TRUE(memory.get() != nullptr);
@@ -249,14 +244,14 @@
   // be returned if the file mapping fails, but the device check is incorrect.
   std::vector<uint8_t> buffer(1024);
   uint64_t start = reinterpret_cast<uint64_t>(buffer.data());
-  MapInfo info(nullptr, start, start + buffer.size(), 0, 0x8000, "/dev/something");
+  MapInfo info(nullptr, nullptr, start, start + buffer.size(), 0, 0x8000, "/dev/something");
 
   std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
   ASSERT_TRUE(memory.get() == nullptr);
 }
 
 TEST_F(MapInfoCreateMemoryTest, process_memory) {
-  MapInfo info(nullptr, 0x2000, 0x3000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x2000, 0x3000, 0, PROT_READ, "");
 
   Elf32_Ehdr ehdr = {};
   TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
diff --git a/libunwindstack/tests/MapInfoGetBuildIDTest.cpp b/libunwindstack/tests/MapInfoGetBuildIDTest.cpp
index 16451d1..6953e26 100644
--- a/libunwindstack/tests/MapInfoGetBuildIDTest.cpp
+++ b/libunwindstack/tests/MapInfoGetBuildIDTest.cpp
@@ -50,7 +50,8 @@
     elf_interface_ = new ElfInterfaceFake(memory_);
     elf_->FakeSetInterface(elf_interface_);
     elf_container_.reset(elf_);
-    map_info_.reset(new MapInfo(nullptr, 0x1000, 0x20000, 0, PROT_READ | PROT_WRITE, tf_->path));
+    map_info_.reset(
+        new MapInfo(nullptr, nullptr, 0x1000, 0x20000, 0, PROT_READ | PROT_WRITE, tf_->path));
   }
 
   void MultipleThreadTest(std::string expected_build_id);
@@ -64,7 +65,7 @@
 };
 
 TEST_F(MapInfoGetBuildIDTest, no_elf_and_no_valid_elf_in_memory) {
-  MapInfo info(nullptr, 0x1000, 0x2000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x1000, 0x2000, 0, PROT_READ, "");
 
   EXPECT_EQ("", info.GetBuildID());
   EXPECT_EQ("", info.GetPrintableBuildID());
diff --git a/libunwindstack/tests/MapInfoGetElfTest.cpp b/libunwindstack/tests/MapInfoGetElfTest.cpp
index d60b8b1..7f97814 100644
--- a/libunwindstack/tests/MapInfoGetElfTest.cpp
+++ b/libunwindstack/tests/MapInfoGetElfTest.cpp
@@ -68,7 +68,7 @@
 };
 
 TEST_F(MapInfoGetElfTest, invalid) {
-  MapInfo info(nullptr, 0x1000, 0x2000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x1000, 0x2000, 0, PROT_READ, "");
 
   // The map is empty, but this should still create an invalid elf object.
   Elf* elf = info.GetElf(process_memory_, ARCH_ARM);
@@ -77,7 +77,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, valid32) {
-  MapInfo info(nullptr, 0x3000, 0x4000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x3000, 0x4000, 0, PROT_READ, "");
 
   Elf32_Ehdr ehdr;
   TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
@@ -97,7 +97,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, valid64) {
-  MapInfo info(nullptr, 0x8000, 0x9000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x8000, 0x9000, 0, PROT_READ, "");
 
   Elf64_Ehdr ehdr;
   TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, EM_AARCH64);
@@ -111,7 +111,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, invalid_arch_mismatch) {
-  MapInfo info(nullptr, 0x3000, 0x4000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x3000, 0x4000, 0, PROT_READ, "");
 
   Elf32_Ehdr ehdr;
   TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
@@ -123,7 +123,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, gnu_debugdata_init32) {
-  MapInfo info(nullptr, 0x2000, 0x3000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x2000, 0x3000, 0, PROT_READ, "");
 
   TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(ELFCLASS32, EM_ARM, true,
                                                [&](uint64_t offset, const void* ptr, size_t size) {
@@ -139,7 +139,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, gnu_debugdata_init64) {
-  MapInfo info(nullptr, 0x5000, 0x8000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x5000, 0x8000, 0, PROT_READ, "");
 
   TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(ELFCLASS64, EM_AARCH64, true,
                                                [&](uint64_t offset, const void* ptr, size_t size) {
@@ -155,7 +155,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, end_le_start) {
-  MapInfo info(nullptr, 0x1000, 0x1000, 0, PROT_READ, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x1000, 0x1000, 0, PROT_READ, elf_.path);
 
   Elf32_Ehdr ehdr;
   TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
@@ -182,7 +182,7 @@
 // Verify that if the offset is non-zero but there is no elf at the offset,
 // that the full file is used.
 TEST_F(MapInfoGetElfTest, file_backed_non_zero_offset_full_file) {
-  MapInfo info(nullptr, 0x1000, 0x2000, 0x100, PROT_READ, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x1000, 0x2000, 0x100, PROT_READ, elf_.path);
 
   std::vector<uint8_t> buffer(0x1000);
   memset(buffer.data(), 0, buffer.size());
@@ -211,7 +211,7 @@
 // Verify that if the offset is non-zero and there is an elf at that
 // offset, that only part of the file is used.
 TEST_F(MapInfoGetElfTest, file_backed_non_zero_offset_partial_file) {
-  MapInfo info(nullptr, 0x1000, 0x2000, 0x2000, PROT_READ, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x1000, 0x2000, 0x2000, PROT_READ, elf_.path);
 
   std::vector<uint8_t> buffer(0x4000);
   memset(buffer.data(), 0, buffer.size());
@@ -241,7 +241,7 @@
 // embedded elf is bigger than the initial map, the new object is larger
 // than the original map size. Do this for a 32 bit elf and a 64 bit elf.
 TEST_F(MapInfoGetElfTest, file_backed_non_zero_offset_partial_file_whole_elf32) {
-  MapInfo info(nullptr, 0x5000, 0x6000, 0x1000, PROT_READ, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x5000, 0x6000, 0x1000, PROT_READ, elf_.path);
 
   std::vector<uint8_t> buffer(0x4000);
   memset(buffer.data(), 0, buffer.size());
@@ -269,7 +269,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, file_backed_non_zero_offset_partial_file_whole_elf64) {
-  MapInfo info(nullptr, 0x7000, 0x8000, 0x1000, PROT_READ, elf_.path);
+  MapInfo info(nullptr, nullptr, 0x7000, 0x8000, 0x1000, PROT_READ, elf_.path);
 
   std::vector<uint8_t> buffer(0x4000);
   memset(buffer.data(), 0, buffer.size());
@@ -297,7 +297,7 @@
 }
 
 TEST_F(MapInfoGetElfTest, check_device_maps) {
-  MapInfo info(nullptr, 0x7000, 0x8000, 0x1000, PROT_READ | MAPS_FLAGS_DEVICE_MAP,
+  MapInfo info(nullptr, nullptr, 0x7000, 0x8000, 0x1000, PROT_READ | MAPS_FLAGS_DEVICE_MAP,
                "/dev/something");
 
   // Create valid elf data in process memory for this to verify that only
@@ -343,7 +343,7 @@
   wait = true;
   // Create all of the threads and have them do the GetElf at the same time
   // to make it likely that a race will occur.
-  MapInfo info(nullptr, 0x7000, 0x8000, 0x1000, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x7000, 0x8000, 0x1000, PROT_READ, "");
   for (size_t i = 0; i < kNumConcurrentThreads; i++) {
     std::thread* thread = new std::thread([i, this, &wait, &info, &elf_in_threads]() {
       while (wait)
@@ -373,8 +373,8 @@
 
 // Verify that previous maps don't automatically get the same elf object.
 TEST_F(MapInfoGetElfTest, prev_map_elf_not_set) {
-  MapInfo info1(nullptr, 0x1000, 0x2000, 0, PROT_READ, "/not/present");
-  MapInfo info2(&info1, 0x2000, 0x3000, 0, PROT_READ, elf_.path);
+  MapInfo info1(nullptr, nullptr, 0x1000, 0x2000, 0, PROT_READ, "/not/present");
+  MapInfo info2(&info1, &info1, 0x2000, 0x3000, 0, PROT_READ, elf_.path);
 
   Elf32_Ehdr ehdr;
   TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
@@ -389,8 +389,25 @@
 // Verify that a read-only map followed by a read-execute map will result
 // in the same elf object in both maps.
 TEST_F(MapInfoGetElfTest, read_only_followed_by_read_exec_share_elf) {
-  MapInfo r_info(nullptr, 0x1000, 0x2000, 0, PROT_READ, elf_.path);
-  MapInfo rw_info(&r_info, 0x2000, 0x3000, 0x1000, PROT_READ | PROT_EXEC, elf_.path);
+  MapInfo r_info(nullptr, nullptr, 0x1000, 0x2000, 0, PROT_READ, elf_.path);
+  MapInfo rw_info(&r_info, &r_info, 0x2000, 0x3000, 0x1000, PROT_READ | PROT_EXEC, elf_.path);
+
+  Elf32_Ehdr ehdr;
+  TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
+  memory_->SetMemory(0x1000, &ehdr, sizeof(ehdr));
+  Elf* elf = rw_info.GetElf(process_memory_, ARCH_ARM);
+  ASSERT_TRUE(elf != nullptr);
+  ASSERT_TRUE(elf->valid());
+
+  ASSERT_EQ(elf, r_info.GetElf(process_memory_, ARCH_ARM));
+}
+
+// Verify that a read-only map followed by an empty map, then followed by
+// a read-execute map will result in the same elf object in both maps.
+TEST_F(MapInfoGetElfTest, read_only_followed_by_empty_then_read_exec_share_elf) {
+  MapInfo r_info(nullptr, nullptr, 0x1000, 0x2000, 0, PROT_READ, elf_.path);
+  MapInfo empty(&r_info, &r_info, 0x2000, 0x3000, 0, 0, "");
+  MapInfo rw_info(&empty, &r_info, 0x3000, 0x4000, 0x2000, PROT_READ | PROT_EXEC, elf_.path);
 
   Elf32_Ehdr ehdr;
   TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
diff --git a/libunwindstack/tests/MapInfoGetLoadBiasTest.cpp b/libunwindstack/tests/MapInfoGetLoadBiasTest.cpp
index f5ac6cb..971d452 100644
--- a/libunwindstack/tests/MapInfoGetLoadBiasTest.cpp
+++ b/libunwindstack/tests/MapInfoGetLoadBiasTest.cpp
@@ -50,7 +50,7 @@
     process_memory_.reset(memory_);
     elf_ = new ElfFake(new MemoryFake);
     elf_container_.reset(elf_);
-    map_info_.reset(new MapInfo(nullptr, 0x1000, 0x20000, 0, PROT_READ | PROT_WRITE, ""));
+    map_info_.reset(new MapInfo(nullptr, nullptr, 0x1000, 0x20000, 0, PROT_READ | PROT_WRITE, ""));
   }
 
   void MultipleThreadTest(uint64_t expected_load_bias);
@@ -63,7 +63,7 @@
 };
 
 TEST_F(MapInfoGetLoadBiasTest, no_elf_and_no_valid_elf_in_memory) {
-  MapInfo info(nullptr, 0x1000, 0x2000, 0, PROT_READ, "");
+  MapInfo info(nullptr, nullptr, 0x1000, 0x2000, 0, PROT_READ, "");
 
   EXPECT_EQ(0U, info.GetLoadBias(process_memory_));
 }
@@ -84,7 +84,7 @@
   elf_->FakeSetLoadBias(0);
   EXPECT_EQ(0U, map_info_->GetLoadBias(process_memory_));
 
-  map_info_->load_bias = static_cast<uint64_t>(-1);
+  map_info_->load_bias = INT64_MAX;
   elf_->FakeSetLoadBias(0x1000);
   EXPECT_EQ(0x1000U, map_info_->GetLoadBias(process_memory_));
 }
@@ -141,6 +141,7 @@
   phdr.p_type = PT_NULL;
   memory->SetMemory(offset + 0x5000, &phdr, sizeof(phdr));
   phdr.p_type = PT_LOAD;
+  phdr.p_flags = PF_X;
   phdr.p_offset = 0;
   phdr.p_vaddr = 0xe000;
   memory->SetMemory(offset + 0x5000 + sizeof(phdr), &phdr, sizeof(phdr));
diff --git a/libunwindstack/tests/MapInfoTest.cpp b/libunwindstack/tests/MapInfoTest.cpp
index e2cbb98..98edc0e 100644
--- a/libunwindstack/tests/MapInfoTest.cpp
+++ b/libunwindstack/tests/MapInfoTest.cpp
@@ -26,8 +26,8 @@
 namespace unwindstack {
 
 TEST(MapInfoTest, maps_constructor_const_char) {
-  MapInfo prev_map(nullptr, 0, 0, 0, 0, "");
-  MapInfo map_info(&prev_map, 1, 2, 3, 4, "map");
+  MapInfo prev_map(nullptr, nullptr, 0, 0, 0, 0, "");
+  MapInfo map_info(&prev_map, &prev_map, 1, 2, 3, 4, "map");
 
   EXPECT_EQ(&prev_map, map_info.prev_map);
   EXPECT_EQ(1UL, map_info.start);
@@ -35,15 +35,15 @@
   EXPECT_EQ(3UL, map_info.offset);
   EXPECT_EQ(4UL, map_info.flags);
   EXPECT_EQ("map", map_info.name);
-  EXPECT_EQ(static_cast<uint64_t>(-1), map_info.load_bias);
+  EXPECT_EQ(INT64_MAX, map_info.load_bias);
   EXPECT_EQ(0UL, map_info.elf_offset);
   EXPECT_TRUE(map_info.elf.get() == nullptr);
 }
 
 TEST(MapInfoTest, maps_constructor_string) {
   std::string name("string_map");
-  MapInfo prev_map(nullptr, 0, 0, 0, 0, "");
-  MapInfo map_info(&prev_map, 1, 2, 3, 4, name);
+  MapInfo prev_map(nullptr, nullptr, 0, 0, 0, 0, "");
+  MapInfo map_info(&prev_map, &prev_map, 1, 2, 3, 4, name);
 
   EXPECT_EQ(&prev_map, map_info.prev_map);
   EXPECT_EQ(1UL, map_info.start);
@@ -51,7 +51,7 @@
   EXPECT_EQ(3UL, map_info.offset);
   EXPECT_EQ(4UL, map_info.flags);
   EXPECT_EQ("string_map", map_info.name);
-  EXPECT_EQ(static_cast<uint64_t>(-1), map_info.load_bias);
+  EXPECT_EQ(INT64_MAX, map_info.load_bias);
   EXPECT_EQ(0UL, map_info.elf_offset);
   EXPECT_TRUE(map_info.elf.get() == nullptr);
 }
@@ -62,7 +62,7 @@
   elf->FakeSetInterface(interface);
   interface->FakePushFunctionData(FunctionData("function", 1000));
 
-  MapInfo map_info(nullptr, 1, 2, 3, 4, "");
+  MapInfo map_info(nullptr, nullptr, 1, 2, 3, 4, "");
   map_info.elf.reset(elf);
 
   std::string name;
diff --git a/libunwindstack/tests/MapsTest.cpp b/libunwindstack/tests/MapsTest.cpp
index 9e7a6ab..724eeb5 100644
--- a/libunwindstack/tests/MapsTest.cpp
+++ b/libunwindstack/tests/MapsTest.cpp
@@ -82,7 +82,7 @@
 }
 
 TEST(MapsTest, verify_parse_line) {
-  MapInfo info(nullptr, 0, 0, 0, 0, "");
+  MapInfo info(nullptr, nullptr, 0, 0, 0, 0, "");
 
   VerifyLine("01-02 rwxp 03 04:05 06\n", &info);
   EXPECT_EQ(1U, info.start);
@@ -155,7 +155,7 @@
 }
 
 TEST(MapsTest, verify_large_values) {
-  MapInfo info(nullptr, 0, 0, 0, 0, "");
+  MapInfo info(nullptr, nullptr, 0, 0, 0, 0, "");
 #if defined(__LP64__)
   VerifyLine("fabcdef012345678-f12345678abcdef8 rwxp f0b0d0f010305070 00:00 0\n", &info);
   EXPECT_EQ(0xfabcdef012345678UL, info.start);
diff --git a/libunwindstack/tests/MemoryBufferTest.cpp b/libunwindstack/tests/MemoryBufferTest.cpp
index 28e0e76..a6c12aa 100644
--- a/libunwindstack/tests/MemoryBufferTest.cpp
+++ b/libunwindstack/tests/MemoryBufferTest.cpp
@@ -18,9 +18,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "LogFake.h"
+#include "MemoryBuffer.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryCacheTest.cpp b/libunwindstack/tests/MemoryCacheTest.cpp
index a3def20..3bd3e4d 100644
--- a/libunwindstack/tests/MemoryCacheTest.cpp
+++ b/libunwindstack/tests/MemoryCacheTest.cpp
@@ -20,8 +20,7 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
+#include "MemoryCache.h"
 #include "MemoryFake.h"
 
 namespace unwindstack {
diff --git a/libunwindstack/tests/MemoryFileTest.cpp b/libunwindstack/tests/MemoryFileTest.cpp
index d7d1ace..4124a49 100644
--- a/libunwindstack/tests/MemoryFileTest.cpp
+++ b/libunwindstack/tests/MemoryFileTest.cpp
@@ -21,7 +21,7 @@
 #include <android-base/file.h>
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
+#include "MemoryFileAtOffset.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryLocalTest.cpp b/libunwindstack/tests/MemoryLocalTest.cpp
index 5a389d0..c9e5dc0 100644
--- a/libunwindstack/tests/MemoryLocalTest.cpp
+++ b/libunwindstack/tests/MemoryLocalTest.cpp
@@ -22,7 +22,7 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
+#include "MemoryLocal.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryOfflineBufferTest.cpp b/libunwindstack/tests/MemoryOfflineBufferTest.cpp
index f022884..9531708 100644
--- a/libunwindstack/tests/MemoryOfflineBufferTest.cpp
+++ b/libunwindstack/tests/MemoryOfflineBufferTest.cpp
@@ -18,9 +18,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "LogFake.h"
+#include "MemoryOfflineBuffer.h"
 
 namespace unwindstack {
 
@@ -31,7 +30,7 @@
     memory_.reset(new MemoryOfflineBuffer(buffer_.data(), kStart, kEnd));
   }
 
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     buffer_.resize(kLength);
     for (size_t i = 0; i < kLength; i++) {
       buffer_[i] = i % 189;
diff --git a/libunwindstack/tests/MemoryOfflineTest.cpp b/libunwindstack/tests/MemoryOfflineTest.cpp
index ab9aa9d..d0c441b 100644
--- a/libunwindstack/tests/MemoryOfflineTest.cpp
+++ b/libunwindstack/tests/MemoryOfflineTest.cpp
@@ -19,7 +19,8 @@
 #include <gtest/gtest.h>
 
 #include <android-base/file.h>
-#include <unwindstack/Memory.h>
+
+#include "MemoryOffline.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryRangeTest.cpp b/libunwindstack/tests/MemoryRangeTest.cpp
index 2bac95b..2d4f141 100644
--- a/libunwindstack/tests/MemoryRangeTest.cpp
+++ b/libunwindstack/tests/MemoryRangeTest.cpp
@@ -21,9 +21,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "MemoryFake.h"
+#include "MemoryRange.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryRangesTest.cpp b/libunwindstack/tests/MemoryRangesTest.cpp
index d24fcd2..e4e9fc4 100644
--- a/libunwindstack/tests/MemoryRangesTest.cpp
+++ b/libunwindstack/tests/MemoryRangesTest.cpp
@@ -20,9 +20,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "MemoryFake.h"
+#include "MemoryRange.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryRemoteTest.cpp b/libunwindstack/tests/MemoryRemoteTest.cpp
index fb56e8a..c90dedc 100644
--- a/libunwindstack/tests/MemoryRemoteTest.cpp
+++ b/libunwindstack/tests/MemoryRemoteTest.cpp
@@ -30,7 +30,7 @@
 #include <android-base/file.h>
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
+#include "MemoryRemote.h"
 
 #include "MemoryFake.h"
 #include "TestUtils.h"
diff --git a/libunwindstack/tests/RegsIterateTest.cpp b/libunwindstack/tests/RegsIterateTest.cpp
index 9a27dbd..47e605a 100644
--- a/libunwindstack/tests/RegsIterateTest.cpp
+++ b/libunwindstack/tests/RegsIterateTest.cpp
@@ -111,9 +111,10 @@
   result.push_back({"x27", ARM64_REG_R27});
   result.push_back({"x28", ARM64_REG_R28});
   result.push_back({"x29", ARM64_REG_R29});
-  result.push_back({"sp", ARM64_REG_SP});
   result.push_back({"lr", ARM64_REG_LR});
+  result.push_back({"sp", ARM64_REG_SP});
   result.push_back({"pc", ARM64_REG_PC});
+  result.push_back({"pst", ARM64_REG_PSTATE});
   return result;
 }
 
@@ -236,7 +237,7 @@
 }
 
 using RegTypes = ::testing::Types<RegsArm, RegsArm64, RegsX86, RegsX86_64, RegsMips, RegsMips64>;
-TYPED_TEST_CASE(RegsIterateTest, RegTypes);
+TYPED_TEST_SUITE(RegsIterateTest, RegTypes);
 
 TYPED_TEST(RegsIterateTest, iterate) {
   std::vector<Register> expected = ExpectedRegisters<TypeParam>();
diff --git a/libunwindstack/tests/RegsTest.cpp b/libunwindstack/tests/RegsTest.cpp
index 472d1cf..0a33e2f 100644
--- a/libunwindstack/tests/RegsTest.cpp
+++ b/libunwindstack/tests/RegsTest.cpp
@@ -182,7 +182,7 @@
   RegsX86_64 regs_x86_64;
   RegsMips regs_mips;
   RegsMips64 regs_mips64;
-  MapInfo map_info(nullptr, 0x1000, 0x2000, 0, 0, "");
+  MapInfo map_info(nullptr, nullptr, 0x1000, 0x2000, 0, 0, "");
   Elf* invalid_elf = new Elf(nullptr);
   map_info.elf.reset(invalid_elf);
 
diff --git a/libunwindstack/tests/SymbolsTest.cpp b/libunwindstack/tests/SymbolsTest.cpp
index b40a253..c58aeff 100644
--- a/libunwindstack/tests/SymbolsTest.cpp
+++ b/libunwindstack/tests/SymbolsTest.cpp
@@ -55,7 +55,7 @@
 
   MemoryFake memory_;
 };
-TYPED_TEST_CASE_P(SymbolsTest);
+TYPED_TEST_SUITE_P(SymbolsTest);
 
 TYPED_TEST_P(SymbolsTest, function_bounds_check) {
   Symbols symbols(0x1000, sizeof(TypeParam), sizeof(TypeParam), 0x2000, 0x100);
@@ -362,11 +362,11 @@
   EXPECT_EQ(4U, offset);
 }
 
-REGISTER_TYPED_TEST_CASE_P(SymbolsTest, function_bounds_check, no_symbol, multiple_entries,
-                           multiple_entries_nonstandard_size, symtab_value_out_of_bounds,
-                           symtab_read_cached, get_global);
+REGISTER_TYPED_TEST_SUITE_P(SymbolsTest, function_bounds_check, no_symbol, multiple_entries,
+                            multiple_entries_nonstandard_size, symtab_value_out_of_bounds,
+                            symtab_read_cached, get_global);
 
 typedef ::testing::Types<Elf32_Sym, Elf64_Sym> SymbolsTestTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(, SymbolsTest, SymbolsTestTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Libunwindstack, SymbolsTest, SymbolsTestTypes);
 
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/UnwindOfflineTest.cpp b/libunwindstack/tests/UnwindOfflineTest.cpp
index 6c64c40..c2bd836 100644
--- a/libunwindstack/tests/UnwindOfflineTest.cpp
+++ b/libunwindstack/tests/UnwindOfflineTest.cpp
@@ -35,7 +35,6 @@
 #include <unwindstack/MachineX86.h>
 #include <unwindstack/MachineX86_64.h>
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
 #include <unwindstack/RegsArm.h>
 #include <unwindstack/RegsArm64.h>
 #include <unwindstack/RegsX86.h>
@@ -43,6 +42,7 @@
 #include <unwindstack/Unwinder.h>
 
 #include "ElfTestUtils.h"
+#include "MemoryOffline.h"
 #include "TestUtils.h"
 
 namespace unwindstack {
@@ -62,7 +62,7 @@
     free(cwd_);
   }
 
-  void Init(const char* file_dir, ArchEnum arch) {
+  void Init(const char* file_dir, ArchEnum arch, bool add_stack = true) {
     dir_ = TestGetFileDirectory() + "offline/" + file_dir;
 
     std::string data;
@@ -71,23 +71,25 @@
     maps_.reset(new BufferMaps(data.c_str()));
     ASSERT_TRUE(maps_->Parse());
 
-    std::string stack_name(dir_ + "stack.data");
-    struct stat st;
-    if (stat(stack_name.c_str(), &st) == 0 && S_ISREG(st.st_mode)) {
-      std::unique_ptr<MemoryOffline> stack_memory(new MemoryOffline);
-      ASSERT_TRUE(stack_memory->Init((dir_ + "stack.data").c_str(), 0));
-      process_memory_.reset(stack_memory.release());
-    } else {
-      std::unique_ptr<MemoryOfflineParts> stack_memory(new MemoryOfflineParts);
-      for (size_t i = 0;; i++) {
-        stack_name = dir_ + "stack" + std::to_string(i) + ".data";
-        if (stat(stack_name.c_str(), &st) == -1 || !S_ISREG(st.st_mode)) {
-          ASSERT_TRUE(i != 0) << "No stack data files found.";
-          break;
+    if (add_stack) {
+      std::string stack_name(dir_ + "stack.data");
+      struct stat st;
+      if (stat(stack_name.c_str(), &st) == 0 && S_ISREG(st.st_mode)) {
+        std::unique_ptr<MemoryOffline> stack_memory(new MemoryOffline);
+        ASSERT_TRUE(stack_memory->Init((dir_ + "stack.data").c_str(), 0));
+        process_memory_.reset(stack_memory.release());
+      } else {
+        std::unique_ptr<MemoryOfflineParts> stack_memory(new MemoryOfflineParts);
+        for (size_t i = 0;; i++) {
+          stack_name = dir_ + "stack" + std::to_string(i) + ".data";
+          if (stat(stack_name.c_str(), &st) == -1 || !S_ISREG(st.st_mode)) {
+            ASSERT_TRUE(i != 0) << "No stack data files found.";
+            break;
+          }
+          AddMemory(stack_name, stack_memory.get());
         }
-        AddMemory(stack_name, stack_memory.get());
+        process_memory_.reset(stack_memory.release());
       }
-      process_memory_.reset(stack_memory.release());
     }
 
     switch (arch) {
@@ -167,15 +169,18 @@
 };
 
 std::unordered_map<std::string, uint32_t> UnwindOfflineTest::arm64_regs_ = {
-    {"x0", ARM64_REG_R0},   {"x1", ARM64_REG_R1},   {"x2", ARM64_REG_R2},   {"x3", ARM64_REG_R3},
-    {"x4", ARM64_REG_R4},   {"x5", ARM64_REG_R5},   {"x6", ARM64_REG_R6},   {"x7", ARM64_REG_R7},
-    {"x8", ARM64_REG_R8},   {"x9", ARM64_REG_R9},   {"x10", ARM64_REG_R10}, {"x11", ARM64_REG_R11},
-    {"x12", ARM64_REG_R12}, {"x13", ARM64_REG_R13}, {"x14", ARM64_REG_R14}, {"x15", ARM64_REG_R15},
-    {"x16", ARM64_REG_R16}, {"x17", ARM64_REG_R17}, {"x18", ARM64_REG_R18}, {"x19", ARM64_REG_R19},
-    {"x20", ARM64_REG_R20}, {"x21", ARM64_REG_R21}, {"x22", ARM64_REG_R22}, {"x23", ARM64_REG_R23},
-    {"x24", ARM64_REG_R24}, {"x25", ARM64_REG_R25}, {"x26", ARM64_REG_R26}, {"x27", ARM64_REG_R27},
-    {"x28", ARM64_REG_R28}, {"x29", ARM64_REG_R29}, {"sp", ARM64_REG_SP},   {"lr", ARM64_REG_LR},
-    {"pc", ARM64_REG_PC},
+    {"x0", ARM64_REG_R0},      {"x1", ARM64_REG_R1},   {"x2", ARM64_REG_R2},
+    {"x3", ARM64_REG_R3},      {"x4", ARM64_REG_R4},   {"x5", ARM64_REG_R5},
+    {"x6", ARM64_REG_R6},      {"x7", ARM64_REG_R7},   {"x8", ARM64_REG_R8},
+    {"x9", ARM64_REG_R9},      {"x10", ARM64_REG_R10}, {"x11", ARM64_REG_R11},
+    {"x12", ARM64_REG_R12},    {"x13", ARM64_REG_R13}, {"x14", ARM64_REG_R14},
+    {"x15", ARM64_REG_R15},    {"x16", ARM64_REG_R16}, {"x17", ARM64_REG_R17},
+    {"x18", ARM64_REG_R18},    {"x19", ARM64_REG_R19}, {"x20", ARM64_REG_R20},
+    {"x21", ARM64_REG_R21},    {"x22", ARM64_REG_R22}, {"x23", ARM64_REG_R23},
+    {"x24", ARM64_REG_R24},    {"x25", ARM64_REG_R25}, {"x26", ARM64_REG_R26},
+    {"x27", ARM64_REG_R27},    {"x28", ARM64_REG_R28}, {"x29", ARM64_REG_R29},
+    {"sp", ARM64_REG_SP},      {"lr", ARM64_REG_LR},   {"pc", ARM64_REG_PC},
+    {"pst", ARM64_REG_PSTATE},
 };
 
 std::unordered_map<std::string, uint32_t> UnwindOfflineTest::x86_regs_ = {
@@ -1442,4 +1447,293 @@
   EXPECT_EQ(0x7be4f07d20ULL, unwinder.frames()[12].sp);
 }
 
+TEST_F(UnwindOfflineTest, invalid_elf_offset_arm) {
+  ASSERT_NO_FATAL_FAILURE(Init("invalid_elf_offset_arm/", ARCH_ARM, false));
+
+  Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+  unwinder.Unwind();
+
+  std::string frame_info(DumpFrames(unwinder));
+  ASSERT_EQ(1U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+  EXPECT_EQ("  #00 pc 00aa7508  invalid.apk (offset 0x12e4000)\n", frame_info);
+  EXPECT_EQ(0xc898f508, unwinder.frames()[0].pc);
+  EXPECT_EQ(0xc2044218, unwinder.frames()[0].sp);
+}
+
+TEST_F(UnwindOfflineTest, load_bias_ro_rx_x86_64) {
+  ASSERT_NO_FATAL_FAILURE(Init("load_bias_ro_rx_x86_64/", ARCH_X86_64));
+
+  Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+  unwinder.Unwind();
+
+  std::string frame_info(DumpFrames(unwinder));
+  ASSERT_EQ(17U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+  EXPECT_EQ(
+      "  #00 pc 00000000000e9dd4  libc.so (__write+20)\n"
+      "  #01 pc 000000000007ab9c  libc.so (_IO_file_write+44)\n"
+      "  #02 pc 0000000000079f3e  libc.so\n"
+      "  #03 pc 000000000007bce8  libc.so (_IO_do_write+24)\n"
+      "  #04 pc 000000000007b26e  libc.so (_IO_file_xsputn+270)\n"
+      "  #05 pc 000000000004f7f9  libc.so (_IO_vfprintf+1945)\n"
+      "  #06 pc 0000000000057cb5  libc.so (_IO_printf+165)\n"
+      "  #07 pc 0000000000ed1796  perfetto_unittests "
+      "(testing::internal::PrettyUnitTestResultPrinter::OnTestIterationStart(testing::UnitTest "
+      "const&, int)+374)\n"
+      "  #08 pc 0000000000ed30fd  perfetto_unittests "
+      "(testing::internal::TestEventRepeater::OnTestIterationStart(testing::UnitTest const&, "
+      "int)+125)\n"
+      "  #09 pc 0000000000ed5e25  perfetto_unittests "
+      "(testing::internal::UnitTestImpl::RunAllTests()+581)\n"
+      "  #10 pc 0000000000ef63f3  perfetto_unittests "
+      "(bool "
+      "testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, "
+      "bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char "
+      "const*)+131)\n"
+      "  #11 pc 0000000000ee2a21  perfetto_unittests "
+      "(bool "
+      "testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, "
+      "bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char "
+      "const*)+113)\n"
+      "  #12 pc 0000000000ed5bb9  perfetto_unittests (testing::UnitTest::Run()+185)\n"
+      "  #13 pc 0000000000e900f0  perfetto_unittests (RUN_ALL_TESTS()+16)\n"
+      "  #14 pc 0000000000e900d8  perfetto_unittests (main+56)\n"
+      "  #15 pc 000000000002352a  libc.so (__libc_start_main+234)\n"
+      "  #16 pc 0000000000919029  perfetto_unittests (_start+41)\n",
+      frame_info);
+
+  EXPECT_EQ(0x7f9326a57dd4ULL, unwinder.frames()[0].pc);
+  EXPECT_EQ(0x7ffd224153c8ULL, unwinder.frames()[0].sp);
+  EXPECT_EQ(0x7f93269e8b9cULL, unwinder.frames()[1].pc);
+  EXPECT_EQ(0x7ffd224153d0ULL, unwinder.frames()[1].sp);
+  EXPECT_EQ(0x7f93269e7f3eULL, unwinder.frames()[2].pc);
+  EXPECT_EQ(0x7ffd22415400ULL, unwinder.frames()[2].sp);
+  EXPECT_EQ(0x7f93269e9ce8ULL, unwinder.frames()[3].pc);
+  EXPECT_EQ(0x7ffd22415440ULL, unwinder.frames()[3].sp);
+  EXPECT_EQ(0x7f93269e926eULL, unwinder.frames()[4].pc);
+  EXPECT_EQ(0x7ffd22415450ULL, unwinder.frames()[4].sp);
+  EXPECT_EQ(0x7f93269bd7f9ULL, unwinder.frames()[5].pc);
+  EXPECT_EQ(0x7ffd22415490ULL, unwinder.frames()[5].sp);
+  EXPECT_EQ(0x7f93269c5cb5ULL, unwinder.frames()[6].pc);
+  EXPECT_EQ(0x7ffd22415a10ULL, unwinder.frames()[6].sp);
+  EXPECT_EQ(0xed1796ULL, unwinder.frames()[7].pc);
+  EXPECT_EQ(0x7ffd22415af0ULL, unwinder.frames()[7].sp);
+  EXPECT_EQ(0xed30fdULL, unwinder.frames()[8].pc);
+  EXPECT_EQ(0x7ffd22415b70ULL, unwinder.frames()[8].sp);
+  EXPECT_EQ(0xed5e25ULL, unwinder.frames()[9].pc);
+  EXPECT_EQ(0x7ffd22415bb0ULL, unwinder.frames()[9].sp);
+  EXPECT_EQ(0xef63f3ULL, unwinder.frames()[10].pc);
+  EXPECT_EQ(0x7ffd22415c60ULL, unwinder.frames()[10].sp);
+  EXPECT_EQ(0xee2a21ULL, unwinder.frames()[11].pc);
+  EXPECT_EQ(0x7ffd22415cc0ULL, unwinder.frames()[11].sp);
+  EXPECT_EQ(0xed5bb9ULL, unwinder.frames()[12].pc);
+  EXPECT_EQ(0x7ffd22415d40ULL, unwinder.frames()[12].sp);
+  EXPECT_EQ(0xe900f0ULL, unwinder.frames()[13].pc);
+  EXPECT_EQ(0x7ffd22415d90ULL, unwinder.frames()[13].sp);
+  EXPECT_EQ(0xe900d8ULL, unwinder.frames()[14].pc);
+  EXPECT_EQ(0x7ffd22415da0ULL, unwinder.frames()[14].sp);
+  EXPECT_EQ(0x7f932699152aULL, unwinder.frames()[15].pc);
+  EXPECT_EQ(0x7ffd22415dd0ULL, unwinder.frames()[15].sp);
+  EXPECT_EQ(0x919029ULL, unwinder.frames()[16].pc);
+  EXPECT_EQ(0x7ffd22415e90ULL, unwinder.frames()[16].sp);
+}
+
+TEST_F(UnwindOfflineTest, load_bias_different_section_bias_arm64) {
+  ASSERT_NO_FATAL_FAILURE(Init("load_bias_different_section_bias_arm64/", ARCH_ARM64));
+
+  Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+  unwinder.Unwind();
+
+  std::string frame_info(DumpFrames(unwinder));
+  ASSERT_EQ(12U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+  EXPECT_EQ(
+      "  #00 pc 00000000000d59bc  linker64 (__dl_syscall+28)\n"
+      "  #01 pc 00000000000554e8  linker64 (__dl__ZL24debuggerd_signal_handleriP7siginfoPv+1148)\n"
+      "  #02 pc 00000000000008c0  vdso (__kernel_rt_sigreturn)\n"
+      "  #03 pc 000000000007f3e8  libc.so (abort+168)\n"
+      "  #04 pc 00000000000459fc  test (std::__ndk1::__throw_bad_cast()+4)\n"
+      "  #05 pc 0000000000056d80  test (testing::Test::Run()+88)\n"
+      "  #06 pc 000000000005724c  test (testing::TestInfo::Run()+112)\n"
+      "  #07 pc 0000000000057558  test (testing::TestSuite::Run()+116)\n"
+      "  #08 pc 000000000005bffc  test (testing::internal::UnitTestImpl::RunAllTests()+464)\n"
+      "  #09 pc 000000000005bd9c  test (testing::UnitTest::Run()+116)\n"
+      "  #10 pc 00000000000464e4  test (main+144)\n"
+      "  #11 pc 000000000007aa34  libc.so (__libc_init+108)\n",
+      frame_info);
+
+  EXPECT_EQ(0x7112cb99bcULL, unwinder.frames()[0].pc);
+  EXPECT_EQ(0x7112bdbbf0ULL, unwinder.frames()[0].sp);
+  EXPECT_EQ(0x7112c394e8ULL, unwinder.frames()[1].pc);
+  EXPECT_EQ(0x7112bdbbf0ULL, unwinder.frames()[1].sp);
+  EXPECT_EQ(0x7112be28c0ULL, unwinder.frames()[2].pc);
+  EXPECT_EQ(0x7112bdbda0ULL, unwinder.frames()[2].sp);
+  EXPECT_EQ(0x71115ab3e8ULL, unwinder.frames()[3].pc);
+  EXPECT_EQ(0x7fdd4a3f00ULL, unwinder.frames()[3].sp);
+  EXPECT_EQ(0x5f739dc9fcULL, unwinder.frames()[4].pc);
+  EXPECT_EQ(0x7fdd4a3fe0ULL, unwinder.frames()[4].sp);
+  EXPECT_EQ(0x5f739edd80ULL, unwinder.frames()[5].pc);
+  EXPECT_EQ(0x7fdd4a3ff0ULL, unwinder.frames()[5].sp);
+  EXPECT_EQ(0x5f739ee24cULL, unwinder.frames()[6].pc);
+  EXPECT_EQ(0x7fdd4a4010ULL, unwinder.frames()[6].sp);
+  EXPECT_EQ(0x5f739ee558ULL, unwinder.frames()[7].pc);
+  EXPECT_EQ(0x7fdd4a4040ULL, unwinder.frames()[7].sp);
+  EXPECT_EQ(0x5f739f2ffcULL, unwinder.frames()[8].pc);
+  EXPECT_EQ(0x7fdd4a4070ULL, unwinder.frames()[8].sp);
+  EXPECT_EQ(0x5f739f2d9cULL, unwinder.frames()[9].pc);
+  EXPECT_EQ(0x7fdd4a4100ULL, unwinder.frames()[9].sp);
+  EXPECT_EQ(0x5f739dd4e4ULL, unwinder.frames()[10].pc);
+  EXPECT_EQ(0x7fdd4a4130ULL, unwinder.frames()[10].sp);
+  EXPECT_EQ(0x71115a6a34ULL, unwinder.frames()[11].pc);
+  EXPECT_EQ(0x7fdd4a4170ULL, unwinder.frames()[11].sp);
+}
+
+TEST_F(UnwindOfflineTest, eh_frame_bias_x86) {
+  ASSERT_NO_FATAL_FAILURE(Init("eh_frame_bias_x86/", ARCH_X86));
+
+  Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+  unwinder.Unwind();
+
+  std::string frame_info(DumpFrames(unwinder));
+  ASSERT_EQ(11U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+  EXPECT_EQ(
+      "  #00 pc ffffe430  vdso.so (__kernel_vsyscall+16)\n"
+      "  #01 pc 00082a4b  libc.so (__epoll_pwait+43)\n"
+      "  #02 pc 000303a3  libc.so (epoll_pwait+115)\n"
+      "  #03 pc 000303ed  libc.so (epoll_wait+45)\n"
+      "  #04 pc 00010ea2  tombstoned (epoll_dispatch+226)\n"
+      "  #05 pc 0000c5e7  tombstoned (event_base_loop+1095)\n"
+      "  #06 pc 0000c193  tombstoned (event_base_dispatch+35)\n"
+      "  #07 pc 00005c77  tombstoned (main+884)\n"
+      "  #08 pc 00015f66  libc.so (__libc_init+102)\n"
+      "  #09 pc 0000360e  tombstoned (_start+98)\n"
+      "  #10 pc 00000001  <unknown>\n",
+      frame_info);
+
+  EXPECT_EQ(0xffffe430ULL, unwinder.frames()[0].pc);
+  EXPECT_EQ(0xfffe1a30ULL, unwinder.frames()[0].sp);
+  EXPECT_EQ(0xeb585a4bULL, unwinder.frames()[1].pc);
+  EXPECT_EQ(0xfffe1a40ULL, unwinder.frames()[1].sp);
+  EXPECT_EQ(0xeb5333a3ULL, unwinder.frames()[2].pc);
+  EXPECT_EQ(0xfffe1a60ULL, unwinder.frames()[2].sp);
+  EXPECT_EQ(0xeb5333edULL, unwinder.frames()[3].pc);
+  EXPECT_EQ(0xfffe1ab0ULL, unwinder.frames()[3].sp);
+  EXPECT_EQ(0xeb841ea2ULL, unwinder.frames()[4].pc);
+  EXPECT_EQ(0xfffe1ae0ULL, unwinder.frames()[4].sp);
+  EXPECT_EQ(0xeb83d5e7ULL, unwinder.frames()[5].pc);
+  EXPECT_EQ(0xfffe1b30ULL, unwinder.frames()[5].sp);
+  EXPECT_EQ(0xeb83d193ULL, unwinder.frames()[6].pc);
+  EXPECT_EQ(0xfffe1bd0ULL, unwinder.frames()[6].sp);
+  EXPECT_EQ(0xeb836c77ULL, unwinder.frames()[7].pc);
+  EXPECT_EQ(0xfffe1c00ULL, unwinder.frames()[7].sp);
+  EXPECT_EQ(0xeb518f66ULL, unwinder.frames()[8].pc);
+  EXPECT_EQ(0xfffe1d00ULL, unwinder.frames()[8].sp);
+  EXPECT_EQ(0xeb83460eULL, unwinder.frames()[9].pc);
+  EXPECT_EQ(0xfffe1d40ULL, unwinder.frames()[9].sp);
+  EXPECT_EQ(0x00000001ULL, unwinder.frames()[10].pc);
+  EXPECT_EQ(0xfffe1d74ULL, unwinder.frames()[10].sp);
+}
+
+TEST_F(UnwindOfflineTest, signal_load_bias_arm) {
+  ASSERT_NO_FATAL_FAILURE(Init("signal_load_bias_arm/", ARCH_ARM));
+
+  Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+  unwinder.Unwind();
+
+  std::string frame_info(DumpFrames(unwinder));
+  ASSERT_EQ(17U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+  EXPECT_EQ(
+      "  #00 pc 0029ef9e  libunwindstack_unit_test (SignalInnerFunction+10)\n"
+      "  #01 pc 0029efa7  libunwindstack_unit_test (SignalMiddleFunction+2)\n"
+      "  #02 pc 0029efaf  libunwindstack_unit_test (SignalOuterFunction+2)\n"
+      "  #03 pc 002a280b  libunwindstack_unit_test (unwindstack::SignalCallerHandler(int, "
+      "siginfo*, void*)+10)\n"
+      "  #04 pc 00058bd4  libc.so (__restore)\n"
+      "  #05 pc 0029f01e  libunwindstack_unit_test (InnerFunction+106)\n"
+      "  #06 pc 0029f633  libunwindstack_unit_test (MiddleFunction+16)\n"
+      "  #07 pc 0029f64b  libunwindstack_unit_test (OuterFunction+16)\n"
+      "  #08 pc 002a1711  libunwindstack_unit_test (unwindstack::RemoteThroughSignal(int, unsigned "
+      "int)+260)\n"
+      "  #09 pc 002a1603  libunwindstack_unit_test "
+      "(unwindstack::UnwindTest_remote_through_signal_Test::TestBody()+10)\n"
+      "  #10 pc 002c8fe3  libunwindstack_unit_test (testing::Test::Run()+130)\n"
+      "  #11 pc 002c9b25  libunwindstack_unit_test (testing::TestInfo::Run()+184)\n"
+      "  #12 pc 002c9e27  libunwindstack_unit_test (testing::TestSuite::Run()+202)\n"
+      "  #13 pc 002d193d  libunwindstack_unit_test "
+      "(testing::internal::UnitTestImpl::RunAllTests()+660)\n"
+      "  #14 pc 002d160b  libunwindstack_unit_test (testing::UnitTest::Run()+134)\n"
+      "  #15 pc 002de035  libunwindstack_unit_test (IsolateMain+680)\n"
+      "  #16 pc 00058155  libc.so (__libc_init+68)\n",
+      frame_info);
+
+  EXPECT_EQ(0xb6955f9eULL, unwinder.frames()[0].pc);
+  EXPECT_EQ(0xf2790ce8ULL, unwinder.frames()[0].sp);
+  EXPECT_EQ(0xb6955fa7ULL, unwinder.frames()[1].pc);
+  EXPECT_EQ(0xf2790ce8ULL, unwinder.frames()[1].sp);
+  EXPECT_EQ(0xb6955fafULL, unwinder.frames()[2].pc);
+  EXPECT_EQ(0xf2790cf0ULL, unwinder.frames()[2].sp);
+  EXPECT_EQ(0xb695980bULL, unwinder.frames()[3].pc);
+  EXPECT_EQ(0xf2790cf8ULL, unwinder.frames()[3].sp);
+  EXPECT_EQ(0xf23febd4ULL, unwinder.frames()[4].pc);
+  EXPECT_EQ(0xf2790d10ULL, unwinder.frames()[4].sp);
+  EXPECT_EQ(0xb695601eULL, unwinder.frames()[5].pc);
+  EXPECT_EQ(0xffe67798ULL, unwinder.frames()[5].sp);
+  EXPECT_EQ(0xb6956633ULL, unwinder.frames()[6].pc);
+  EXPECT_EQ(0xffe67890ULL, unwinder.frames()[6].sp);
+  EXPECT_EQ(0xb695664bULL, unwinder.frames()[7].pc);
+  EXPECT_EQ(0xffe678a0ULL, unwinder.frames()[7].sp);
+  EXPECT_EQ(0xb6958711ULL, unwinder.frames()[8].pc);
+  EXPECT_EQ(0xffe678b0ULL, unwinder.frames()[8].sp);
+  EXPECT_EQ(0xb6958603ULL, unwinder.frames()[9].pc);
+  EXPECT_EQ(0xffe67ac8ULL, unwinder.frames()[9].sp);
+  EXPECT_EQ(0xb697ffe3ULL, unwinder.frames()[10].pc);
+  EXPECT_EQ(0xffe67ad8ULL, unwinder.frames()[10].sp);
+  EXPECT_EQ(0xb6980b25ULL, unwinder.frames()[11].pc);
+  EXPECT_EQ(0xffe67ae8ULL, unwinder.frames()[11].sp);
+  EXPECT_EQ(0xb6980e27ULL, unwinder.frames()[12].pc);
+  EXPECT_EQ(0xffe67b18ULL, unwinder.frames()[12].sp);
+  EXPECT_EQ(0xb698893dULL, unwinder.frames()[13].pc);
+  EXPECT_EQ(0xffe67b48ULL, unwinder.frames()[13].sp);
+  EXPECT_EQ(0xb698860bULL, unwinder.frames()[14].pc);
+  EXPECT_EQ(0xffe67bb0ULL, unwinder.frames()[14].sp);
+  EXPECT_EQ(0xb6995035ULL, unwinder.frames()[15].pc);
+  EXPECT_EQ(0xffe67bd0ULL, unwinder.frames()[15].sp);
+  EXPECT_EQ(0xf23fe155ULL, unwinder.frames()[16].pc);
+  EXPECT_EQ(0xffe67d10ULL, unwinder.frames()[16].sp);
+}
+
+TEST_F(UnwindOfflineTest, empty_arm64) {
+  ASSERT_NO_FATAL_FAILURE(Init("empty_arm64/", ARCH_ARM64));
+
+  Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+  unwinder.Unwind();
+
+  std::string frame_info(DumpFrames(unwinder));
+  ASSERT_EQ(7U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+  EXPECT_EQ(
+      "  #00 pc 00000000000963a4  libc.so (__ioctl+4)\n"
+      "  #01 pc 000000000005344c  libc.so (ioctl+140)\n"
+      "  #02 pc 0000000000050ce4  libbinder.so "
+      "(android::IPCThreadState::talkWithDriver(bool)+308)\n"
+      "  #03 pc 0000000000050e98  libbinder.so "
+      "(android::IPCThreadState::getAndExecuteCommand()+24)\n"
+      "  #04 pc 00000000000516ac  libbinder.so (android::IPCThreadState::joinThreadPool(bool)+60)\n"
+      "  #05 pc 00000000000443b0  netd (main+1056)\n"
+      "  #06 pc 0000000000045594  libc.so (__libc_init+108)\n",
+      frame_info);
+
+  EXPECT_EQ(0x72a02203a4U, unwinder.frames()[0].pc);
+  EXPECT_EQ(0x7ffb6c0b50U, unwinder.frames()[0].sp);
+  EXPECT_EQ(0x72a01dd44cU, unwinder.frames()[1].pc);
+  EXPECT_EQ(0x7ffb6c0b50U, unwinder.frames()[1].sp);
+  EXPECT_EQ(0x729f759ce4U, unwinder.frames()[2].pc);
+  EXPECT_EQ(0x7ffb6c0c50U, unwinder.frames()[2].sp);
+  EXPECT_EQ(0x729f759e98U, unwinder.frames()[3].pc);
+  EXPECT_EQ(0x7ffb6c0ce0U, unwinder.frames()[3].sp);
+  EXPECT_EQ(0x729f75a6acU, unwinder.frames()[4].pc);
+  EXPECT_EQ(0x7ffb6c0d10U, unwinder.frames()[4].sp);
+  EXPECT_EQ(0x5d478af3b0U, unwinder.frames()[5].pc);
+  EXPECT_EQ(0x7ffb6c0d40U, unwinder.frames()[5].sp);
+  EXPECT_EQ(0x72a01cf594U, unwinder.frames()[6].pc);
+  EXPECT_EQ(0x7ffb6c0f30U, unwinder.frames()[6].sp);
+}
+
 }  // namespace unwindstack
diff --git a/libunwindstack/tests/UnwindTest.cpp b/libunwindstack/tests/UnwindTest.cpp
index 4e38015..f76a101 100644
--- a/libunwindstack/tests/UnwindTest.cpp
+++ b/libunwindstack/tests/UnwindTest.cpp
@@ -35,11 +35,11 @@
 #include <android-base/threads.h>
 
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
 #include <unwindstack/Regs.h>
 #include <unwindstack/RegsGetLocal.h>
 #include <unwindstack/Unwinder.h>
 
+#include "MemoryRemote.h"
 #include "TestUtils.h"
 
 namespace unwindstack {
diff --git a/libunwindstack/tests/UnwinderTest.cpp b/libunwindstack/tests/UnwinderTest.cpp
index 30e57a1..ef1950c 100644
--- a/libunwindstack/tests/UnwinderTest.cpp
+++ b/libunwindstack/tests/UnwinderTest.cpp
@@ -54,7 +54,7 @@
     }
   }
 
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     maps_.reset(new Maps);
 
     ElfFake* elf = new ElfFake(new MemoryFake);
@@ -132,6 +132,10 @@
     const auto& info6 = *--maps_->end();
     info6->memory_backed_elf = true;
 
+    AddMapInfo(0xd0000, 0xd1000, 0x1000, PROT_READ | PROT_WRITE | PROT_EXEC, "/fake/fake.apk");
+    const auto& info7 = *--maps_->end();
+    info7->load_bias = 0;
+
     process_memory_.reset(new MemoryFake);
   }
 
@@ -1015,6 +1019,50 @@
   EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
 }
 
+TEST_F(UnwinderTest, dex_pc_in_map_non_zero_offset) {
+  ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
+  regs_.set_pc(0x1000);
+  regs_.set_sp(0x10000);
+  regs_.FakeSetDexPc(0xd0400);
+
+  Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
+  unwinder.Unwind();
+  EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
+  EXPECT_FALSE(unwinder.elf_from_memory_not_file());
+
+  ASSERT_EQ(2U, unwinder.NumFrames());
+
+  auto* frame = &unwinder.frames()[0];
+  EXPECT_EQ(0U, frame->num);
+  EXPECT_EQ(0x400U, frame->rel_pc);
+  EXPECT_EQ(0xd0400U, frame->pc);
+  EXPECT_EQ(0x10000U, frame->sp);
+  EXPECT_EQ("", frame->function_name);
+  EXPECT_EQ(0U, frame->function_offset);
+  EXPECT_EQ("/fake/fake.apk", frame->map_name);
+  EXPECT_EQ(0x1000U, frame->map_elf_start_offset);
+  EXPECT_EQ(0x1000U, frame->map_exact_offset);
+  EXPECT_EQ(0xd0000U, frame->map_start);
+  EXPECT_EQ(0xd1000U, frame->map_end);
+  EXPECT_EQ(0U, frame->map_load_bias);
+  EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
+
+  frame = &unwinder.frames()[1];
+  EXPECT_EQ(1U, frame->num);
+  EXPECT_EQ(0U, frame->rel_pc);
+  EXPECT_EQ(0x1000U, frame->pc);
+  EXPECT_EQ(0x10000U, frame->sp);
+  EXPECT_EQ("Frame0", frame->function_name);
+  EXPECT_EQ(0U, frame->function_offset);
+  EXPECT_EQ("/system/fake/libc.so", frame->map_name);
+  EXPECT_EQ(0U, frame->map_elf_start_offset);
+  EXPECT_EQ(0U, frame->map_exact_offset);
+  EXPECT_EQ(0x1000U, frame->map_start);
+  EXPECT_EQ(0x8000U, frame->map_end);
+  EXPECT_EQ(0U, frame->map_load_bias);
+  EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
+}
+
 TEST_F(UnwinderTest, dex_pc_not_in_map) {
   ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
   regs_.set_pc(0x1000);
diff --git a/libunwindstack/tests/VerifyBionicTerminationTest.cpp b/libunwindstack/tests/VerifyBionicTerminationTest.cpp
new file mode 100644
index 0000000..6a3e91a
--- /dev/null
+++ b/libunwindstack/tests/VerifyBionicTerminationTest.cpp
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define _GNU_SOURCE 1
+#include <stdint.h>
+#include <string.h>
+
+#include <string>
+
+#if defined(__BIONIC__)
+
+#include <gtest/gtest.h>
+
+#include <unwindstack/DwarfSection.h>
+#include <unwindstack/Elf.h>
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/Regs.h>
+#include <unwindstack/RegsGetLocal.h>
+#include <unwindstack/Unwinder.h>
+
+// This test is specific to bionic to verify that __libc_init is
+// properly setting the return address to undefined so that the
+// unwind properly terminates.
+
+namespace unwindstack {
+
+static std::string DumpFrames(const UnwinderFromPid& unwinder) {
+  std::string unwind;
+  for (size_t i = 0; i < unwinder.NumFrames(); i++) {
+    unwind += unwinder.FormatFrame(i) + '\n';
+  }
+  return unwind;
+}
+
+static DwarfLocationEnum GetReturnAddressLocation(uint64_t rel_pc, DwarfSection* section) {
+  if (section == nullptr) {
+    return DWARF_LOCATION_INVALID;
+  }
+
+  const DwarfFde* fde = section->GetFdeFromPc(rel_pc);
+  if (fde == nullptr || fde->cie == nullptr) {
+    return DWARF_LOCATION_INVALID;
+  }
+  dwarf_loc_regs_t regs;
+  if (!section->GetCfaLocationInfo(rel_pc, fde, &regs)) {
+    return DWARF_LOCATION_INVALID;
+  }
+
+  auto reg_entry = regs.find(fde->cie->return_address_register);
+  if (reg_entry == regs.end()) {
+    return DWARF_LOCATION_INVALID;
+  }
+  return reg_entry->second.type;
+}
+
+static void VerifyReturnAddress(const FrameData& frame) {
+  // Now go and find information about the register data and verify that the relative pc results in
+  // an undefined register.
+  Elf elf(Memory::CreateFileMemory(frame.map_name, 0).release());
+  ASSERT_TRUE(elf.Init()) << "Failed to init elf object from " << frame.map_name;
+  ASSERT_TRUE(elf.valid()) << "Elf " << frame.map_name << " is not valid.";
+  ElfInterface* interface = elf.interface();
+
+  // Only check the eh_frame and the debug_frame since the undefined register
+  // is set using a cfi directive.
+  // Check debug_frame first, then eh_frame since debug_frame always
+  // contains the most specific data.
+  DwarfLocationEnum location = GetReturnAddressLocation(frame.rel_pc, interface->debug_frame());
+  if (location == DWARF_LOCATION_UNDEFINED) {
+    return;
+  }
+
+  location = GetReturnAddressLocation(frame.rel_pc, interface->eh_frame());
+  ASSERT_EQ(DWARF_LOCATION_UNDEFINED, location);
+}
+
+// This test assumes that it starts from the main thread, and that the
+// libc.so on device will include symbols so that function names can
+// be resolved.
+TEST(VerifyBionicTermination, local_terminate) {
+  std::unique_ptr<Regs> regs(Regs::CreateFromLocal());
+
+  UnwinderFromPid unwinder(512, getpid());
+  ASSERT_TRUE(unwinder.Init(regs->Arch()));
+  unwinder.SetRegs(regs.get());
+
+  RegsGetLocal(regs.get());
+  unwinder.Unwind();
+  ASSERT_LT(0U, unwinder.NumFrames());
+
+  SCOPED_TRACE(DumpFrames(unwinder));
+
+  // Look for the frame that includes __libc_init, there should only
+  // be one and it should be the last.
+  bool found = false;
+  const std::vector<FrameData>& frames = unwinder.frames();
+  for (size_t i = 0; i < unwinder.NumFrames(); i++) {
+    const FrameData& frame = frames[i];
+    if (frame.function_name == "__libc_init" && !frame.map_name.empty() &&
+        std::string("libc.so") == basename(frame.map_name.c_str())) {
+      ASSERT_EQ(unwinder.NumFrames(), i + 1) << "__libc_init is not last frame.";
+      ASSERT_NO_FATAL_FAILURE(VerifyReturnAddress(frame));
+      found = true;
+    }
+  }
+  ASSERT_TRUE(found) << "Unable to find libc.so:__libc_init frame\n";
+}
+
+}  // namespace unwindstack
+
+#endif
diff --git a/libunwindstack/tests/files/offline/art_quick_osr_stub_arm/maps.txt b/libunwindstack/tests/files/offline/art_quick_osr_stub_arm/maps.txt
index 5657373..1ff12db 100644
--- a/libunwindstack/tests/files/offline/art_quick_osr_stub_arm/maps.txt
+++ b/libunwindstack/tests/files/offline/art_quick_osr_stub_arm/maps.txt
@@ -1,4 +1,4 @@
 d0250000-d2600000 r-xp 0 00:00 0 <anonymous:d0250000>
 e466e000-e4ae8000 r-xp 0 00:00 0 libart.so
-e4ae8000-e4ae9000 rw-p 1000 00:00 0 libart.so
+e4af1000-e4af2000 rw-p 482000 00:00 0 libart.so
 e7d91000-e7e31000 r-xp 0 00:00 0 libc.so
diff --git a/libunwindstack/tests/files/offline/eh_frame_bias_x86/libc.so b/libunwindstack/tests/files/offline/eh_frame_bias_x86/libc.so
new file mode 100644
index 0000000..f3eb615
--- /dev/null
+++ b/libunwindstack/tests/files/offline/eh_frame_bias_x86/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/eh_frame_bias_x86/maps.txt b/libunwindstack/tests/files/offline/eh_frame_bias_x86/maps.txt
new file mode 100644
index 0000000..7d52483
--- /dev/null
+++ b/libunwindstack/tests/files/offline/eh_frame_bias_x86/maps.txt
@@ -0,0 +1,3 @@
+eb503000-eb5e8000 r-xp 0 00:00 0   libc.so
+eb831000-eb852000 r-xp 0 00:00 0   tombstoned
+ffffe000-fffff000 r-xp 0 00:00 0   vdso.so
diff --git a/libunwindstack/tests/files/offline/eh_frame_bias_x86/regs.txt b/libunwindstack/tests/files/offline/eh_frame_bias_x86/regs.txt
new file mode 100644
index 0000000..821928e
--- /dev/null
+++ b/libunwindstack/tests/files/offline/eh_frame_bias_x86/regs.txt
@@ -0,0 +1,9 @@
+eax: fffffffc
+ebx: 4
+ecx: eb290180
+edx: 20
+ebp: 8
+edi: 0
+esi: ffffffff
+esp: fffe1a30
+eip: ffffe430
diff --git a/libunwindstack/tests/files/offline/eh_frame_bias_x86/stack.data b/libunwindstack/tests/files/offline/eh_frame_bias_x86/stack.data
new file mode 100644
index 0000000..b95bfac
--- /dev/null
+++ b/libunwindstack/tests/files/offline/eh_frame_bias_x86/stack.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/eh_frame_bias_x86/tombstoned b/libunwindstack/tests/files/offline/eh_frame_bias_x86/tombstoned
new file mode 100644
index 0000000..aefdb6b
--- /dev/null
+++ b/libunwindstack/tests/files/offline/eh_frame_bias_x86/tombstoned
Binary files differ
diff --git a/libunwindstack/tests/files/offline/eh_frame_bias_x86/vdso.so b/libunwindstack/tests/files/offline/eh_frame_bias_x86/vdso.so
new file mode 100644
index 0000000..c71dcfb
--- /dev/null
+++ b/libunwindstack/tests/files/offline/eh_frame_bias_x86/vdso.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/empty_arm64/libbinder.so b/libunwindstack/tests/files/offline/empty_arm64/libbinder.so
new file mode 100644
index 0000000..f30384c
--- /dev/null
+++ b/libunwindstack/tests/files/offline/empty_arm64/libbinder.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/empty_arm64/libc.so b/libunwindstack/tests/files/offline/empty_arm64/libc.so
new file mode 100644
index 0000000..b05dcaf
--- /dev/null
+++ b/libunwindstack/tests/files/offline/empty_arm64/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/empty_arm64/maps.txt b/libunwindstack/tests/files/offline/empty_arm64/maps.txt
new file mode 100644
index 0000000..edb83c6
--- /dev/null
+++ b/libunwindstack/tests/files/offline/empty_arm64/maps.txt
@@ -0,0 +1,9 @@
+5d4786b000-5d47893000 r--p 0 00:00 0   netd
+5d47893000-5d47894000 ---p 0 00:00 0
+5d47894000-5d47901000 --xp 29000 00:00 0   netd
+729f709000-729f750000 r--p 0 00:00 0   libbinder.so
+729f750000-729f751000 ---p 0 00:00 0
+729f751000-729f794000 --xp 48000 00:00 0   libbinder.so
+72a018a000-72a01c2000 r--p 0 00:00 0   libc.so
+72a01c2000-72a01c3000 ---p 0 00:00 0
+72a01c3000-72a023b000 --xp 39000 00:00 0   libc.so
diff --git a/libunwindstack/tests/files/offline/empty_arm64/netd b/libunwindstack/tests/files/offline/empty_arm64/netd
new file mode 100644
index 0000000..8a72e94
--- /dev/null
+++ b/libunwindstack/tests/files/offline/empty_arm64/netd
Binary files differ
diff --git a/libunwindstack/tests/files/offline/empty_arm64/regs.txt b/libunwindstack/tests/files/offline/empty_arm64/regs.txt
new file mode 100644
index 0000000..3d4279f
--- /dev/null
+++ b/libunwindstack/tests/files/offline/empty_arm64/regs.txt
@@ -0,0 +1,34 @@
+x0: 1d
+x1: c0306201
+x2: 7ffb6c0c50
+x3: 0
+x4: 0
+x5: 0
+x6: 0
+x7: 0
+x8: 1d
+x9: 7ffb6c0c00
+x10: 7ffb6c0c50
+x11: 7ffb6c0bd0
+x12: ffffff80ffffffd0
+x13: 0
+x14: 72a0240ce2
+x15: 20
+x16: 729f7a54e8
+x17: 72a01dd3c0
+x18: 72a0ac2000
+x19: 72a0666000
+x20: 719769b610
+x21: 719769b730
+x22: c0306201
+x23: fffffff7
+x24: 72a0666000
+x25: 0
+x26: 0
+x27: 0
+x28: 0
+x29: 7ffb6c0c30
+sp: 7ffb6c0b50
+lr: 72a01dd450
+pc: 72a02203a4
+pst: a0000000
diff --git a/libunwindstack/tests/files/offline/empty_arm64/stack.data b/libunwindstack/tests/files/offline/empty_arm64/stack.data
new file mode 100644
index 0000000..6d6108c
--- /dev/null
+++ b/libunwindstack/tests/files/offline/empty_arm64/stack.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/invalid_elf_offset_arm/maps.txt b/libunwindstack/tests/files/offline/invalid_elf_offset_arm/maps.txt
new file mode 100644
index 0000000..022404c
--- /dev/null
+++ b/libunwindstack/tests/files/offline/invalid_elf_offset_arm/maps.txt
@@ -0,0 +1 @@
+c7ee8000-c8c52fff r-xp  12e4000    00:00 0  invalid.apk
diff --git a/libunwindstack/tests/files/offline/invalid_elf_offset_arm/regs.txt b/libunwindstack/tests/files/offline/invalid_elf_offset_arm/regs.txt
new file mode 100644
index 0000000..b7f10ef
--- /dev/null
+++ b/libunwindstack/tests/files/offline/invalid_elf_offset_arm/regs.txt
@@ -0,0 +1,16 @@
+r0: c0434c00
+r1: 2a4c9fbc
+r2: 00000000
+r3: c83ef1f9
+r4: 00000004
+r5: c2044904
+r6: 00000000
+r7: c20443b8
+r8: 000b33ff
+r9: c20444b0
+r10: cac90740
+r11: 00000000
+ip: ed891ca4
+sp: c2044218
+lr: ed807265
+pc: c898f508
diff --git a/libunwindstack/tests/files/offline/jit_debug_arm/maps.txt b/libunwindstack/tests/files/offline/jit_debug_arm/maps.txt
index 4043122..3b87f2f 100644
--- a/libunwindstack/tests/files/offline/jit_debug_arm/maps.txt
+++ b/libunwindstack/tests/files/offline/jit_debug_arm/maps.txt
@@ -4,8 +4,8 @@
 e0447000-e0448000 r-xp 2000 00:00 0   137-cfi.odex
 e2796000-e4796000 r-xp 0 00:00 0   anonymous:e2796000
 e648e000-e690f000 r-xp 0 00:00 0  libart.so
-e690f000-e6910000 rw-p 1000 00:00 0  libart.so
+e6918000-e6919000 rw-p 489000 00:00 0  libart.so
 ed306000-ed801000 r-xp 0 00:00 0   libartd.so
-ed801000-ed802000 rw-p 1000 00:00 0   libartd.so
+ed80a000-ed80b000 rw-p 503000 00:00 0   libartd.so
 eda88000-edb23000 r-xp 0 00:00 0   libc.so
 ede4e000-ede50000 r-xp 0 00:00 0   anonymous:ede4e000
diff --git a/libunwindstack/tests/files/offline/jit_debug_x86/maps.txt b/libunwindstack/tests/files/offline/jit_debug_x86/maps.txt
index f255a44..c22b5de 100644
--- a/libunwindstack/tests/files/offline/jit_debug_x86/maps.txt
+++ b/libunwindstack/tests/files/offline/jit_debug_x86/maps.txt
@@ -4,5 +4,5 @@
 ec606000-ec607000 r-xp 2000 00:00 0   137-cfi.odex
 ee74c000-f074c000 r-xp 0 00:00 0   anonymous:ee74c000
 f6be1000-f732b000 r-xp 0 00:00 0   libartd.so
-f732b000-f732c000 rw-p 1000 00:00 0   libartd.so
+f7334000-f7335000 rw-p 752000 00:00 0   libartd.so
 f734b000-f74fc000 r-xp 0 00:00 0   libc.so
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/libc.so b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/libc.so
new file mode 100644
index 0000000..7bb7156
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/linker64 b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/linker64
new file mode 100644
index 0000000..00a3896
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/linker64
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/maps.txt b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/maps.txt
new file mode 100644
index 0000000..a2babee
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/maps.txt
@@ -0,0 +1,7 @@
+5f73997000-5f739dc000 r--p 0 00:00 0   test
+5f739dc000-5f73a43000 r-xp 44000 00:00 0   test
+711152c000-711156e000 r--p 0 00:00 0   libc.so
+711156e000-7111611000 --xp 42000 00:00 0   libc.so
+7112be2000-7112be4000 r-xp 0 00:00 0   vdso
+7112be4000-7112c1c000 r--p 0 00:00 0   linker64
+7112c1c000-7112ce1000 r-xp 38000 00:00 0   linker64
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/regs.txt b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/regs.txt
new file mode 100644
index 0000000..3c601e1
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/regs.txt
@@ -0,0 +1,33 @@
+x0: 7112bdbc24
+x1: 0
+x2: ffffffff
+x3: 0
+x4: 0
+x5: 0
+x6: 0
+x7: 7f7f7f7f7f7f7f7f
+x8: 62
+x9: a78826643b37f4a1
+x10: 7112bdbc20
+x11: 4100
+x12: 7112bdbb70
+x13: 18
+x14: 1d6518077
+x15: 2a43148faf732a
+x16: 16fc0
+x17: 71115f61a0
+x18: 7111d6a000
+x19: 7112cef1b0
+x20: 7112bdbda0
+x21: 59616d61
+x22: 1
+x23: 7112bdbc24
+x24: 4b0e
+x25: 62
+x26: 2
+x27: 0
+x28: 7111934020
+x29: 7112bdbd90
+sp: 7112bdbbf0
+lr: 7112c394ec
+pc: 7112cb99bc
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/stack0.data b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/stack0.data
new file mode 100644
index 0000000..1674733
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/stack0.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/stack1.data b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/stack1.data
new file mode 100644
index 0000000..6d7b48a
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/stack1.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/test b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/test
new file mode 100644
index 0000000..3a75b8f
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/test
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/vdso b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/vdso
new file mode 100644
index 0000000..4940916
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_different_section_bias_arm64/vdso
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/libc.so b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/libc.so
new file mode 100644
index 0000000..63383d0
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/maps.txt b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/maps.txt
new file mode 100644
index 0000000..ba5a31b
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/maps.txt
@@ -0,0 +1,3 @@
+200000-919000 r--p 0 00:00 0   perfetto_unittests
+919000-1a0c000 r-xp 719000 00:00 0   perfetto_unittests
+7f932696e000-7f9326b23000 r-xp 0 00:00 0   libc.so
diff --git a/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/perfetto_unittests b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/perfetto_unittests
new file mode 100644
index 0000000..a30e599
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/perfetto_unittests
Binary files differ
diff --git a/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/regs.txt b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/regs.txt
new file mode 100644
index 0000000..6cb4055
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/regs.txt
@@ -0,0 +1,17 @@
+rax: 3b
+rbx: 3b
+rcx: 7f9326a57dd4
+rdx: 3b
+r8: 7ffd22415b09
+r9: 7ffd224155e0
+r10: 0
+r11: 246
+r12: 7f9326d28760
+r13: 3b
+r14: 7f9326d23760
+r15: 3b
+rdi: 1
+rsi: 2678850
+rbp: 2678850
+rsp: 7ffd224153c8
+rip: 7f9326a57dd4
diff --git a/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/stack.data b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/stack.data
new file mode 100644
index 0000000..4edfe07
--- /dev/null
+++ b/libunwindstack/tests/files/offline/load_bias_ro_rx_x86_64/stack.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/signal_load_bias_arm/libc.so b/libunwindstack/tests/files/offline/signal_load_bias_arm/libc.so
new file mode 100644
index 0000000..f046624
--- /dev/null
+++ b/libunwindstack/tests/files/offline/signal_load_bias_arm/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/signal_load_bias_arm/libunwindstack_unit_test b/libunwindstack/tests/files/offline/signal_load_bias_arm/libunwindstack_unit_test
new file mode 100644
index 0000000..f460dd6
--- /dev/null
+++ b/libunwindstack/tests/files/offline/signal_load_bias_arm/libunwindstack_unit_test
Binary files differ
diff --git a/libunwindstack/tests/files/offline/signal_load_bias_arm/maps.txt b/libunwindstack/tests/files/offline/signal_load_bias_arm/maps.txt
new file mode 100644
index 0000000..165ae49
--- /dev/null
+++ b/libunwindstack/tests/files/offline/signal_load_bias_arm/maps.txt
@@ -0,0 +1,4 @@
+b66b7000-b670c000 r--p 0 00:00 0   libunwindstack_unit_test
+b670c000-b69a8000 r-xp 54000 00:00 0   libunwindstack_unit_test
+f23a6000-f23d0000 r--p 0 00:00 0   libc.so
+f23d0000-f2451000 r-xp 29000 00:00 0   libc.so
diff --git a/libunwindstack/tests/files/offline/signal_load_bias_arm/regs.txt b/libunwindstack/tests/files/offline/signal_load_bias_arm/regs.txt
new file mode 100644
index 0000000..e03f8fd
--- /dev/null
+++ b/libunwindstack/tests/files/offline/signal_load_bias_arm/regs.txt
@@ -0,0 +1,16 @@
+r0: b69b7c84
+r1: 1
+r2: 1
+r3: 1
+r4: f1e52bd0
+r5: f1e11000
+r6: f1e52bd0
+r7: f1e52a38
+r8: f1e11000
+r9: 5de82a8f
+r10: f1e06030
+r11: f1e6d080
+ip: ffe67a88
+sp: f2790ce8
+lr: b6955fab
+pc: b6955f9e
diff --git a/libunwindstack/tests/files/offline/signal_load_bias_arm/stack0.data b/libunwindstack/tests/files/offline/signal_load_bias_arm/stack0.data
new file mode 100644
index 0000000..d9f23f8
--- /dev/null
+++ b/libunwindstack/tests/files/offline/signal_load_bias_arm/stack0.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/signal_load_bias_arm/stack1.data b/libunwindstack/tests/files/offline/signal_load_bias_arm/stack1.data
new file mode 100644
index 0000000..6011883
--- /dev/null
+++ b/libunwindstack/tests/files/offline/signal_load_bias_arm/stack1.data
Binary files differ
diff --git a/libunwindstack/tools/unwind_for_offline.cpp b/libunwindstack/tools/unwind_for_offline.cpp
index 4f67d67..64b58a8 100644
--- a/libunwindstack/tools/unwind_for_offline.cpp
+++ b/libunwindstack/tools/unwind_for_offline.cpp
@@ -275,6 +275,9 @@
 
     if (maps_by_start.count(frame.map_start) == 0) {
       map_info = maps->Find(frame.map_start);
+      if (map_info == nullptr) {
+        continue;
+      }
 
       auto info = FillInAndGetMapInfo(maps_by_start, map_info);
       bool file_copied = false;
diff --git a/libunwindstack/tools/unwind_info.cpp b/libunwindstack/tools/unwind_info.cpp
index 92e5c0a..7a6d8ba 100644
--- a/libunwindstack/tools/unwind_info.cpp
+++ b/libunwindstack/tools/unwind_info.cpp
@@ -31,6 +31,7 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/ElfInterface.h>
 #include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
 
 #include "ArmExidx.h"
 #include "ElfInterfaceArm.h"
@@ -105,14 +106,7 @@
   // Send all log messages to stdout.
   log_to_stdout(true);
 
-  MemoryFileAtOffset* memory = new MemoryFileAtOffset;
-  if (!memory->Init(file, offset)) {
-    // Initializatation failed.
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  Elf elf(memory);
+  Elf elf(Memory::CreateFileMemory(file, offset).release());
   if (!elf.Init() || !elf.valid()) {
     printf("%s is not a valid elf file.\n", file);
     return 1;
diff --git a/libunwindstack/tools/unwind_reg_info.cpp b/libunwindstack/tools/unwind_reg_info.cpp
index b77a86b..0cbcac5 100644
--- a/libunwindstack/tools/unwind_reg_info.cpp
+++ b/libunwindstack/tools/unwind_reg_info.cpp
@@ -33,6 +33,7 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/ElfInterface.h>
 #include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
 
 #include "ArmExidx.h"
 #include "DwarfOp.h"
@@ -164,15 +165,8 @@
   }
 }
 
-int GetInfo(const char* file, uint64_t pc) {
-  MemoryFileAtOffset* memory = new MemoryFileAtOffset;
-  if (!memory->Init(file, 0)) {
-    // Initializatation failed.
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  Elf elf(memory);
+int GetInfo(const char* file, uint64_t offset, uint64_t pc) {
+  Elf elf(Memory::CreateFileMemory(file, offset).release());
   if (!elf.Init() || !elf.valid()) {
     printf("%s is not a valid elf file.\n", file);
     return 1;
@@ -205,7 +199,7 @@
   DwarfSection* section = interface->eh_frame();
   if (section != nullptr) {
     printf("\neh_frame:\n");
-    PrintRegInformation(section, memory, pc, elf.class_type());
+    PrintRegInformation(section, elf.memory(), pc, elf.class_type());
   } else {
     printf("\nno eh_frame information\n");
   }
@@ -213,7 +207,7 @@
   section = interface->debug_frame();
   if (section != nullptr) {
     printf("\ndebug_frame:\n");
-    PrintRegInformation(section, memory, pc, elf.class_type());
+    PrintRegInformation(section, elf.memory(), pc, elf.class_type());
     printf("\n");
   } else {
     printf("\nno debug_frame information\n");
@@ -249,12 +243,14 @@
 }  // namespace unwindstack
 
 int main(int argc, char** argv) {
-  if (argc != 3) {
-    printf("Usage: unwind_reg_info ELF_FILE PC\n");
+  if (argc != 3 && argc != 4) {
+    printf("Usage: unwind_reg_info ELF_FILE PC [OFFSET]\n");
     printf("  ELF_FILE\n");
     printf("    The path to an elf file.\n");
     printf("  PC\n");
     printf("    The pc for which the register information should be obtained.\n");
+    printf("  OFFSET\n");
+    printf("    Use the offset into the ELF file as the beginning of the elf.\n");
     return 1;
   }
 
@@ -276,5 +272,15 @@
     return 1;
   }
 
-  return unwindstack::GetInfo(argv[1], pc);
+  uint64_t offset = 0;
+  if (argc == 4) {
+    char* end;
+    offset = strtoull(argv[3], &end, 16);
+    if (*end != '\0') {
+      printf("Malformed OFFSET value: %s\n", argv[3]);
+      return 1;
+    }
+  }
+
+  return unwindstack::GetInfo(argv[1], offset, pc);
 }
diff --git a/libunwindstack/tools/unwind_symbols.cpp b/libunwindstack/tools/unwind_symbols.cpp
index b0a4dd0..8df2284 100644
--- a/libunwindstack/tools/unwind_symbols.cpp
+++ b/libunwindstack/tools/unwind_symbols.cpp
@@ -59,13 +59,7 @@
   // Send all log messages to stdout.
   unwindstack::log_to_stdout(true);
 
-  unwindstack::MemoryFileAtOffset* memory = new unwindstack::MemoryFileAtOffset;
-  if (!memory->Init(argv[1], 0)) {
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  unwindstack::Elf elf(memory);
+  unwindstack::Elf elf(unwindstack::Memory::CreateFileMemory(argv[1], 0).release());
   if (!elf.Init() || !elf.valid()) {
     printf("%s is not a valid elf file.\n", argv[1]);
     return 1;
diff --git a/libutils/Android.bp b/libutils/Android.bp
index 4f194c7..85f4280 100644
--- a/libutils/Android.bp
+++ b/libutils/Android.bp
@@ -17,6 +17,12 @@
     vendor_available: true,
     recovery_available: true,
     host_supported: true,
+    native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    min_sdk_version: "apex_inherit",
 
     header_libs: [
         "liblog_headers",
@@ -121,8 +127,10 @@
 cc_library {
     name: "libutils",
     defaults: ["libutils_defaults"],
+    native_bridge_supported: true,
 
     srcs: [
+        "Errors.cpp",
         "FileMap.cpp",
         "JenkinsHash.cpp",
         "NativeHandle.cpp",
@@ -156,11 +164,19 @@
             ],
         },
     },
+
+    apex_available: [
+        "//apex_available:anyapex",
+        "//apex_available:platform",
+    ],
+    min_sdk_version: "apex_inherit",
 }
 
 cc_library {
     name: "libutilscallstack",
     defaults: ["libutils_defaults"],
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
 
     srcs: [
         "CallStack.cpp",
@@ -203,6 +219,7 @@
         "Mutex_test.cpp",
         "SharedBuffer_test.cpp",
         "String8_test.cpp",
+        "String16_test.cpp",
         "StrongPointer_test.cpp",
         "Unicode_test.cpp",
         "Vector_test.cpp",
@@ -287,3 +304,9 @@
     ],
     shared_libs: ["libutils_test_singleton1"],
 }
+
+cc_benchmark {
+    name: "libutils_benchmark",
+    srcs: ["Vector_benchmark.cpp"],
+    shared_libs: ["libutils"],
+}
diff --git a/libutils/Errors.cpp b/libutils/Errors.cpp
new file mode 100644
index 0000000..74f3bef
--- /dev/null
+++ b/libutils/Errors.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <utils/Errors.h>
+
+namespace android {
+
+std::string statusToString(status_t s) {
+#define STATUS_CASE(STATUS) \
+    case STATUS:            \
+        return #STATUS
+
+    switch (s) {
+        STATUS_CASE(OK);
+        STATUS_CASE(UNKNOWN_ERROR);
+        STATUS_CASE(NO_MEMORY);
+        STATUS_CASE(INVALID_OPERATION);
+        STATUS_CASE(BAD_VALUE);
+        STATUS_CASE(BAD_TYPE);
+        STATUS_CASE(NAME_NOT_FOUND);
+        STATUS_CASE(PERMISSION_DENIED);
+        STATUS_CASE(NO_INIT);
+        STATUS_CASE(ALREADY_EXISTS);
+        STATUS_CASE(DEAD_OBJECT);
+        STATUS_CASE(FAILED_TRANSACTION);
+        STATUS_CASE(BAD_INDEX);
+        STATUS_CASE(NOT_ENOUGH_DATA);
+        STATUS_CASE(WOULD_BLOCK);
+        STATUS_CASE(TIMED_OUT);
+        STATUS_CASE(UNKNOWN_TRANSACTION);
+        STATUS_CASE(FDS_NOT_ALLOWED);
+        STATUS_CASE(UNEXPECTED_NULL);
+#undef STATUS_CASE
+    }
+
+    return std::to_string(s) + " (" + strerror(-s) + ")";
+}
+
+}  // namespace android
diff --git a/libutils/FileMap.cpp b/libutils/FileMap.cpp
index c828631..0abb861 100644
--- a/libutils/FileMap.cpp
+++ b/libutils/FileMap.cpp
@@ -199,7 +199,7 @@
     int prot = PROT_READ;
     if (!readOnly) prot |= PROT_WRITE;
 
-    void* ptr = mmap(nullptr, adjLength, prot, flags, fd, adjOffset);
+    void* ptr = mmap64(nullptr, adjLength, prot, flags, fd, adjOffset);
     if (ptr == MAP_FAILED) {
         if (errno == EINVAL && length == 0) {
             ptr = nullptr;
diff --git a/libutils/FileMap_test.cpp b/libutils/FileMap_test.cpp
index 096e27a..fd1c9b0 100644
--- a/libutils/FileMap_test.cpp
+++ b/libutils/FileMap_test.cpp
@@ -33,6 +33,26 @@
     ASSERT_EQ(4096, m.getDataOffset());
 }
 
+TEST(FileMap, large_offset) {
+    // Make sure that an offset > INT32_MAX will not fail the create
+    // function. See http://b/155662887.
+    TemporaryFile tf;
+    ASSERT_TRUE(tf.fd != -1);
+
+    off64_t offset = INT32_MAX + 1024LL;
+
+    // Make the temporary file large enough to pass the mmap.
+    ASSERT_EQ(offset, lseek64(tf.fd, offset, SEEK_SET));
+    char value = 0;
+    ASSERT_EQ(1, write(tf.fd, &value, 1));
+
+    android::FileMap m;
+    ASSERT_TRUE(m.create("test", tf.fd, offset, 0, true));
+    ASSERT_STREQ("test", m.getFileName());
+    ASSERT_EQ(0u, m.getDataLength());
+    ASSERT_EQ(offset, m.getDataOffset());
+}
+
 TEST(FileMap, offset_overflow) {
     // Make sure that an end that overflows SIZE_MAX will not abort.
     // See http://b/156997193.
diff --git a/libutils/Looper.cpp b/libutils/Looper.cpp
index 2d696eb..14e3e35 100644
--- a/libutils/Looper.cpp
+++ b/libutils/Looper.cpp
@@ -14,7 +14,9 @@
 #define DEBUG_CALLBACKS 0
 
 #include <utils/Looper.h>
+
 #include <sys/eventfd.h>
+#include <cinttypes>
 
 namespace android {
 
diff --git a/libutils/Looper_test.cpp b/libutils/Looper_test.cpp
index 6fdc0edc..37bdf05 100644
--- a/libutils/Looper_test.cpp
+++ b/libutils/Looper_test.cpp
@@ -11,8 +11,9 @@
 
 #include <utils/threads.h>
 
+// b/141212746 - increased for virtual platforms with higher volatility
 // # of milliseconds to fudge stopwatch measurements
-#define TIMING_TOLERANCE_MS 25
+#define TIMING_TOLERANCE_MS 100
 
 namespace android {
 
diff --git a/libutils/SharedBuffer.cpp b/libutils/SharedBuffer.cpp
index 7910c6e..3e703db 100644
--- a/libutils/SharedBuffer.cpp
+++ b/libutils/SharedBuffer.cpp
@@ -41,6 +41,7 @@
         // The following is OK on Android-supported platforms.
         sb->mRefs.store(1, std::memory_order_relaxed);
         sb->mSize = size;
+        sb->mClientMetadata = 0;
     }
     return sb;
 }
diff --git a/libutils/SharedBuffer.h b/libutils/SharedBuffer.h
index fdf13a9..476c842 100644
--- a/libutils/SharedBuffer.h
+++ b/libutils/SharedBuffer.h
@@ -102,7 +102,12 @@
         // Must be sized to preserve correct alignment.
         mutable std::atomic<int32_t>        mRefs;
                 size_t                      mSize;
-                uint32_t                    mReserved[2];
+                uint32_t                    mReserved;
+public:
+        // mClientMetadata is reserved for client use.  It is initialized to 0
+        // and the clients can do whatever they want with it.  Note that this is
+        // placed last so that it is adjcent to the buffer allocated.
+                uint32_t                    mClientMetadata;
 };
 
 static_assert(sizeof(SharedBuffer) % 8 == 0
diff --git a/libutils/String16.cpp b/libutils/String16.cpp
index caab1bd..539953a 100644
--- a/libutils/String16.cpp
+++ b/libutils/String16.cpp
@@ -24,21 +24,21 @@
 
 namespace android {
 
+static const StaticString16 emptyString(u"");
 static inline char16_t* getEmptyString() {
-    static SharedBuffer* gEmptyStringBuf = [] {
-        SharedBuffer* buf = SharedBuffer::alloc(sizeof(char16_t));
-        char16_t* str = static_cast<char16_t*>(buf->data());
-        *str = 0;
-        return buf;
-    }();
-
-    gEmptyStringBuf->acquire();
-    return static_cast<char16_t*>(gEmptyStringBuf->data());
+    return const_cast<char16_t*>(emptyString.string());
 }
 
 // ---------------------------------------------------------------------------
 
-static char16_t* allocFromUTF8(const char* u8str, size_t u8len)
+void* String16::alloc(size_t size)
+{
+    SharedBuffer* buf = SharedBuffer::alloc(size);
+    buf->mClientMetadata = kIsSharedBufferAllocated;
+    return buf;
+}
+
+char16_t* String16::allocFromUTF8(const char* u8str, size_t u8len)
 {
     if (u8len == 0) return getEmptyString();
 
@@ -49,7 +49,7 @@
         return getEmptyString();
     }
 
-    SharedBuffer* buf = SharedBuffer::alloc(sizeof(char16_t)*(u16len+1));
+    SharedBuffer* buf = static_cast<SharedBuffer*>(alloc(sizeof(char16_t) * (u16len + 1)));
     if (buf) {
         u8cur = (const uint8_t*) u8str;
         char16_t* u16str = (char16_t*)buf->data();
@@ -66,13 +66,13 @@
     return getEmptyString();
 }
 
-static char16_t* allocFromUTF16(const char16_t* u16str, size_t u16len) {
+char16_t* String16::allocFromUTF16(const char16_t* u16str, size_t u16len) {
     if (u16len >= SIZE_MAX / sizeof(char16_t)) {
         android_errorWriteLog(0x534e4554, "73826242");
         abort();
     }
 
-    SharedBuffer* buf = SharedBuffer::alloc((u16len + 1) * sizeof(char16_t));
+    SharedBuffer* buf = static_cast<SharedBuffer*>(alloc((u16len + 1) * sizeof(char16_t)));
     ALOG_ASSERT(buf, "Unable to allocate shared buffer");
     if (buf) {
         char16_t* str = (char16_t*)buf->data();
@@ -97,8 +97,8 @@
     // having run. In this case we always allocate an empty string. It's less
     // efficient than using getEmptyString(), but we assume it's uncommon.
 
-    char16_t* data = static_cast<char16_t*>(
-            SharedBuffer::alloc(sizeof(char16_t))->data());
+    SharedBuffer* buf = static_cast<SharedBuffer*>(alloc(sizeof(char16_t)));
+    char16_t* data = static_cast<char16_t*>(buf->data());
     data[0] = 0;
     mString = data;
 }
@@ -106,7 +106,7 @@
 String16::String16(const String16& o)
     : mString(o.mString)
 {
-    SharedBuffer::bufferFromData(mString)->acquire();
+    acquire();
 }
 
 String16::String16(const String16& o, size_t len, size_t begin)
@@ -136,26 +136,30 @@
 
 String16::~String16()
 {
-    SharedBuffer::bufferFromData(mString)->release();
+    release();
 }
 
 size_t String16::size() const
 {
-    return SharedBuffer::sizeFromData(mString)/sizeof(char16_t)-1;
+    if (isStaticString()) {
+        return staticStringSize();
+    } else {
+        return SharedBuffer::sizeFromData(mString) / sizeof(char16_t) - 1;
+    }
 }
 
 void String16::setTo(const String16& other)
 {
-    SharedBuffer::bufferFromData(other.mString)->acquire();
-    SharedBuffer::bufferFromData(mString)->release();
+    release();
     mString = other.mString;
+    acquire();
 }
 
 status_t String16::setTo(const String16& other, size_t len, size_t begin)
 {
     const size_t N = other.size();
     if (begin >= N) {
-        SharedBuffer::bufferFromData(mString)->release();
+        release();
         mString = getEmptyString();
         return OK;
     }
@@ -184,8 +188,7 @@
         abort();
     }
 
-    SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
-        ->editResize((len+1)*sizeof(char16_t));
+    SharedBuffer* buf = static_cast<SharedBuffer*>(editResize((len + 1) * sizeof(char16_t)));
     if (buf) {
         char16_t* str = (char16_t*)buf->data();
         memmove(str, other, len*sizeof(char16_t));
@@ -212,8 +215,8 @@
         abort();
     }
 
-    SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
-        ->editResize((myLen+otherLen+1)*sizeof(char16_t));
+    SharedBuffer* buf =
+            static_cast<SharedBuffer*>(editResize((myLen + otherLen + 1) * sizeof(char16_t)));
     if (buf) {
         char16_t* str = (char16_t*)buf->data();
         memcpy(str+myLen, other, (otherLen+1)*sizeof(char16_t));
@@ -238,8 +241,8 @@
         abort();
     }
 
-    SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
-        ->editResize((myLen+otherLen+1)*sizeof(char16_t));
+    SharedBuffer* buf =
+            static_cast<SharedBuffer*>(editResize((myLen + otherLen + 1) * sizeof(char16_t)));
     if (buf) {
         char16_t* str = (char16_t*)buf->data();
         memcpy(str+myLen, chrs, otherLen*sizeof(char16_t));
@@ -273,8 +276,8 @@
            len, myLen, String8(chrs, len).string());
     #endif
 
-    SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
-        ->editResize((myLen+len+1)*sizeof(char16_t));
+    SharedBuffer* buf =
+            static_cast<SharedBuffer*>(editResize((myLen + len + 1) * sizeof(char16_t)));
     if (buf) {
         char16_t* str = (char16_t*)buf->data();
         if (pos < myLen) {
@@ -338,23 +341,85 @@
     return strstr16(mString, chrs) != nullptr;
 }
 
+void* String16::edit() {
+    SharedBuffer* buf;
+    if (isStaticString()) {
+        buf = static_cast<SharedBuffer*>(alloc((size() + 1) * sizeof(char16_t)));
+        if (buf) {
+            memcpy(buf->data(), mString, (size() + 1) * sizeof(char16_t));
+        }
+    } else {
+        buf = SharedBuffer::bufferFromData(mString)->edit();
+        buf->mClientMetadata = kIsSharedBufferAllocated;
+    }
+    return buf;
+}
+
+void* String16::editResize(size_t newSize) {
+    SharedBuffer* buf;
+    if (isStaticString()) {
+        size_t copySize = (size() + 1) * sizeof(char16_t);
+        if (newSize < copySize) {
+            copySize = newSize;
+        }
+        buf = static_cast<SharedBuffer*>(alloc(newSize));
+        if (buf) {
+            memcpy(buf->data(), mString, copySize);
+        }
+    } else {
+        buf = SharedBuffer::bufferFromData(mString)->editResize(newSize);
+        buf->mClientMetadata = kIsSharedBufferAllocated;
+    }
+    return buf;
+}
+
+void String16::acquire()
+{
+    if (!isStaticString()) {
+        SharedBuffer::bufferFromData(mString)->acquire();
+    }
+}
+
+void String16::release()
+{
+    if (!isStaticString()) {
+        SharedBuffer::bufferFromData(mString)->release();
+    }
+}
+
+bool String16::isStaticString() const {
+    // See String16.h for notes on the memory layout of String16::StaticData and
+    // SharedBuffer.
+    static_assert(sizeof(SharedBuffer) - offsetof(SharedBuffer, mClientMetadata) == 4);
+    const uint32_t* p = reinterpret_cast<const uint32_t*>(mString);
+    return (*(p - 1) & kIsSharedBufferAllocated) == 0;
+}
+
+size_t String16::staticStringSize() const {
+    // See String16.h for notes on the memory layout of String16::StaticData and
+    // SharedBuffer.
+    static_assert(sizeof(SharedBuffer) - offsetof(SharedBuffer, mClientMetadata) == 4);
+    const uint32_t* p = reinterpret_cast<const uint32_t*>(mString);
+    return static_cast<size_t>(*(p - 1));
+}
+
 status_t String16::makeLower()
 {
     const size_t N = size();
     const char16_t* str = string();
-    char16_t* edit = nullptr;
+    char16_t* edited = nullptr;
     for (size_t i=0; i<N; i++) {
         const char16_t v = str[i];
         if (v >= 'A' && v <= 'Z') {
-            if (!edit) {
-                SharedBuffer* buf = SharedBuffer::bufferFromData(mString)->edit();
+            if (!edited) {
+                SharedBuffer* buf = static_cast<SharedBuffer*>(edit());
                 if (!buf) {
                     return NO_MEMORY;
                 }
-                edit = (char16_t*)buf->data();
-                mString = str = edit;
+                edited = (char16_t*)buf->data();
+                mString = str = edited;
             }
-            edit[i] = tolower((char)v);
+            edited[i] = tolower((char)v);
         }
     }
     return OK;
@@ -364,18 +429,18 @@
 {
     const size_t N = size();
     const char16_t* str = string();
-    char16_t* edit = nullptr;
+    char16_t* edited = nullptr;
     for (size_t i=0; i<N; i++) {
         if (str[i] == replaceThis) {
-            if (!edit) {
-                SharedBuffer* buf = SharedBuffer::bufferFromData(mString)->edit();
+            if (!edited) {
+                SharedBuffer* buf = static_cast<SharedBuffer*>(edit());
                 if (!buf) {
                     return NO_MEMORY;
                 }
-                edit = (char16_t*)buf->data();
-                mString = str = edit;
+                edited = (char16_t*)buf->data();
+                mString = str = edited;
             }
-            edit[i] = withThis;
+            edited[i] = withThis;
         }
     }
     return OK;
@@ -385,7 +450,7 @@
 {
     const size_t N = size();
     if (begin >= N) {
-        SharedBuffer::bufferFromData(mString)->release();
+        release();
         mString = getEmptyString();
         return OK;
     }
@@ -395,8 +460,7 @@
     }
 
     if (begin > 0) {
-        SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
-            ->editResize((N+1)*sizeof(char16_t));
+        SharedBuffer* buf = static_cast<SharedBuffer*>(editResize((N + 1) * sizeof(char16_t)));
         if (!buf) {
             return NO_MEMORY;
         }
@@ -404,8 +468,7 @@
         memmove(str, str+begin, (N-begin+1)*sizeof(char16_t));
         mString = str;
     }
-    SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
-        ->editResize((len+1)*sizeof(char16_t));
+    SharedBuffer* buf = static_cast<SharedBuffer*>(editResize((len + 1) * sizeof(char16_t)));
     if (buf) {
         char16_t* str = (char16_t*)buf->data();
         str[len] = 0;
diff --git a/libutils/String16_test.cpp b/libutils/String16_test.cpp
new file mode 100644
index 0000000..f1f24c3
--- /dev/null
+++ b/libutils/String16_test.cpp
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utils/String16.h>
+#include <utils/String8.h>
+
+#include <gtest/gtest.h>
+
+namespace android {
+
+::testing::AssertionResult Char16_tStringEquals(const char16_t* a, const char16_t* b) {
+    if (strcmp16(a, b) != 0) {
+        return ::testing::AssertionFailure()
+               << "\"" << String8(a).c_str() << "\" not equal to \"" << String8(b).c_str() << "\"";
+    }
+    return ::testing::AssertionSuccess();
+}
+
+#define EXPECT_STR16EQ(a, b) EXPECT_TRUE(Char16_tStringEquals(a, b))
+
+TEST(String16Test, FromChar16_t) {
+    String16 tmp(u"Verify me");
+    EXPECT_STR16EQ(u"Verify me", tmp);
+}
+
+TEST(String16Test, FromChar16_tSized) {
+    String16 tmp(u"Verify me", 7);
+    EXPECT_STR16EQ(u"Verify ", tmp);
+}
+
+TEST(String16Test, FromChar) {
+    String16 tmp("Verify me");
+    EXPECT_STR16EQ(u"Verify me", tmp);
+}
+
+TEST(String16Test, FromCharSized) {
+    String16 tmp("Verify me", 7);
+    EXPECT_STR16EQ(u"Verify ", tmp);
+}
+
+TEST(String16Test, Copy) {
+    String16 tmp("Verify me");
+    String16 another = tmp;
+    EXPECT_STR16EQ(u"Verify me", tmp);
+    EXPECT_STR16EQ(u"Verify me", another);
+}
+
+TEST(String16Test, Move) {
+    String16 tmp("Verify me");
+    String16 another(std::move(tmp));
+    EXPECT_STR16EQ(u"Verify me", another);
+}
+
+TEST(String16Test, Size) {
+    String16 tmp("Verify me");
+    EXPECT_EQ(9U, tmp.size());
+}
+
+TEST(String16Test, setTo) {
+    String16 tmp("Verify me");
+    tmp.setTo(u"New content");
+    EXPECT_EQ(11U, tmp.size());
+    EXPECT_STR16EQ(u"New content", tmp);
+}
+
+TEST(String16Test, Append) {
+    String16 tmp("Verify me");
+    tmp.append(String16("Hello"));
+    EXPECT_EQ(14U, tmp.size());
+    EXPECT_STR16EQ(u"Verify meHello", tmp);
+}
+
+TEST(String16Test, Insert) {
+    String16 tmp("Verify me");
+    tmp.insert(6, u"Insert");
+    EXPECT_EQ(15U, tmp.size());
+    EXPECT_STR16EQ(u"VerifyInsert me", tmp);
+}
+
+TEST(String16Test, Remove) {
+    String16 tmp("Verify me");
+    tmp.remove(2, 6);
+    EXPECT_EQ(2U, tmp.size());
+    EXPECT_STR16EQ(u" m", tmp);
+}
+
+TEST(String16Test, MakeLower) {
+    String16 tmp("Verify Me!");
+    tmp.makeLower();
+    EXPECT_EQ(10U, tmp.size());
+    EXPECT_STR16EQ(u"verify me!", tmp);
+}
+
+TEST(String16Test, ReplaceAll) {
+    String16 tmp("Verify verify Verify");
+    tmp.replaceAll(u'r', u'!');
+    EXPECT_STR16EQ(u"Ve!ify ve!ify Ve!ify", tmp);
+}
+
+TEST(String16Test, Compare) {
+    String16 tmp("Verify me");
+    EXPECT_EQ(String16(u"Verify me"), tmp);
+}
+
+TEST(String16Test, StaticString) {
+    String16 nonStaticString("NonStatic");
+    StaticString16 staticString(u"Static");
+
+    EXPECT_TRUE(staticString.isStaticString());
+    EXPECT_FALSE(nonStaticString.isStaticString());
+}
+
+TEST(String16Test, StaticStringCopy) {
+    StaticString16 tmp(u"Verify me");
+    String16 another = tmp;
+    EXPECT_STR16EQ(u"Verify me", tmp);
+    EXPECT_STR16EQ(u"Verify me", another);
+    EXPECT_TRUE(tmp.isStaticString());
+    EXPECT_TRUE(another.isStaticString());
+}
+
+TEST(String16Test, StaticStringMove) {
+    StaticString16 tmp(u"Verify me");
+    String16 another(std::move(tmp));
+    EXPECT_STR16EQ(u"Verify me", another);
+    EXPECT_TRUE(another.isStaticString());
+}
+
+TEST(String16Test, StaticStringSize) {
+    StaticString16 tmp(u"Verify me");
+    EXPECT_EQ(9U, tmp.size());
+}
+
+TEST(String16Test, StaticStringSetTo) {
+    StaticString16 tmp(u"Verify me");
+    tmp.setTo(u"New content");
+    EXPECT_EQ(11U, tmp.size());
+    EXPECT_STR16EQ(u"New content", tmp);
+    EXPECT_FALSE(tmp.isStaticString());
+}
+
+TEST(String16Test, StaticStringAppend) {
+    StaticString16 tmp(u"Verify me");
+    tmp.append(String16("Hello"));
+    EXPECT_EQ(14U, tmp.size());
+    EXPECT_STR16EQ(u"Verify meHello", tmp);
+    EXPECT_FALSE(tmp.isStaticString());
+}
+
+TEST(String16Test, StaticStringInsert) {
+    StaticString16 tmp(u"Verify me");
+    tmp.insert(6, u"Insert");
+    EXPECT_EQ(15U, tmp.size());
+    EXPECT_STR16EQ(u"VerifyInsert me", tmp);
+    EXPECT_FALSE(tmp.isStaticString());
+}
+
+TEST(String16Test, StaticStringRemove) {
+    StaticString16 tmp(u"Verify me");
+    tmp.remove(2, 6);
+    EXPECT_EQ(2U, tmp.size());
+    EXPECT_STR16EQ(u" m", tmp);
+    EXPECT_FALSE(tmp.isStaticString());
+}
+
+TEST(String16Test, StaticStringMakeLower) {
+    StaticString16 tmp(u"Verify me!");
+    tmp.makeLower();
+    EXPECT_EQ(10U, tmp.size());
+    EXPECT_STR16EQ(u"verify me!", tmp);
+    EXPECT_FALSE(tmp.isStaticString());
+}
+
+TEST(String16Test, StaticStringReplaceAll) {
+    StaticString16 tmp(u"Verify verify Verify");
+    tmp.replaceAll(u'r', u'!');
+    EXPECT_STR16EQ(u"Ve!ify ve!ify Ve!ify", tmp);
+    EXPECT_FALSE(tmp.isStaticString());
+}
+
+TEST(String16Test, StaticStringCompare) {
+    StaticString16 tmp(u"Verify me");
+    EXPECT_EQ(String16(u"Verify me"), tmp);
+}
+
+TEST(String16Test, StringSetToStaticString) {
+    StaticString16 tmp(u"Verify me");
+    String16 another(u"nonstatic");
+    another = tmp;
+    EXPECT_STR16EQ(u"Verify me", tmp);
+    EXPECT_STR16EQ(u"Verify me", another);
+}
+
+TEST(String16Test, StringMoveFromStaticString) {
+    StaticString16 tmp(u"Verify me");
+    String16 another(std::move(tmp));
+    EXPECT_STR16EQ(u"Verify me", another);
+}
+
+TEST(String16Test, EmptyStringIsStatic) {
+    String16 tmp("");
+    EXPECT_TRUE(tmp.isStaticString());
+}
+
+}  // namespace android
diff --git a/libutils/String8.cpp b/libutils/String8.cpp
index 81ec598..9d50e0b 100644
--- a/libutils/String8.cpp
+++ b/libutils/String8.cpp
@@ -474,21 +474,6 @@
     unlockBuffer(len);
 }
 
-size_t String8::getUtf32Length() const
-{
-    return utf8_to_utf32_length(mString, length());
-}
-
-int32_t String8::getUtf32At(size_t index, size_t *next_index) const
-{
-    return utf32_from_utf8_at(mString, length(), index, next_index);
-}
-
-void String8::getUtf32(char32_t* dst) const
-{
-    utf8_to_utf32(mString, length(), dst);
-}
-
 // ---------------------------------------------------------------------------
 // Path functions
 
diff --git a/libutils/StrongPointer.cpp b/libutils/StrongPointer.cpp
index ba52502..ef46723 100644
--- a/libutils/StrongPointer.cpp
+++ b/libutils/StrongPointer.cpp
@@ -21,4 +21,7 @@
 namespace android {
 
 void sp_report_race() { LOG_ALWAYS_FATAL("sp<> assignment detected data race"); }
+
+void sp_report_stack_pointer() { LOG_ALWAYS_FATAL("sp<> constructed with stack pointer argument"); }
+
 }
diff --git a/libutils/StrongPointer_test.cpp b/libutils/StrongPointer_test.cpp
index 153cf96..7b2e37f 100644
--- a/libutils/StrongPointer_test.cpp
+++ b/libutils/StrongPointer_test.cpp
@@ -56,3 +56,18 @@
     }
     ASSERT_TRUE(isDeleted) << "foo was leaked!";
 }
+
+TEST(StrongPointer, NullptrComparison) {
+    sp<SPFoo> foo;
+    ASSERT_EQ(foo, nullptr);
+    ASSERT_EQ(nullptr, foo);
+}
+
+TEST(StrongPointer, PointerComparison) {
+    bool isDeleted;
+    sp<SPFoo> foo = new SPFoo(&isDeleted);
+    ASSERT_EQ(foo.get(), foo);
+    ASSERT_EQ(foo, foo.get());
+    ASSERT_NE(nullptr, foo);
+    ASSERT_NE(foo, nullptr);
+}
diff --git a/libutils/Threads.cpp b/libutils/Threads.cpp
index 31ca138..540dcf4 100644
--- a/libutils/Threads.cpp
+++ b/libutils/Threads.cpp
@@ -18,8 +18,8 @@
 #define LOG_TAG "libutils.threads"
 
 #include <assert.h>
-#include <utils/Thread.h>
 #include <utils/AndroidThreads.h>
+#include <utils/Thread.h>
 
 #if !defined(_WIN32)
 # include <sys/resource.h>
@@ -36,7 +36,10 @@
 
 #include <utils/Log.h>
 
+#if defined(__ANDROID__)
+#include <processgroup/processgroup.h>
 #include <processgroup/sched_policy.h>
+#endif
 
 #if defined(__ANDROID__)
 # define __android_unused
@@ -64,6 +67,7 @@
 
 typedef void* (*android_pthread_entry)(void*);
 
+#if defined(__ANDROID__)
 struct thread_data_t {
     thread_func_t   entryFunction;
     void*           userData;
@@ -79,10 +83,11 @@
         char * name = t->threadName;
         delete t;
         setpriority(PRIO_PROCESS, 0, prio);
+
+        // A new thread will be in its parent's sched group by default,
+        // so we just need to handle the background case.
         if (prio >= ANDROID_PRIORITY_BACKGROUND) {
-            set_sched_policy(0, SP_BACKGROUND);
-        } else {
-            set_sched_policy(0, SP_FOREGROUND);
+            SetTaskProfiles(0, {"SCHED_SP_BACKGROUND"}, true);
         }
 
         if (name) {
@@ -92,6 +97,7 @@
         return f(u);
     }
 };
+#endif
 
 void androidSetThreadName(const char* name) {
 #if defined(__linux__)
@@ -300,11 +306,19 @@
 {
     int rc = 0;
     int lasterr = 0;
+    int curr_pri = getpriority(PRIO_PROCESS, tid);
+
+    if (curr_pri == pri) {
+        return rc;
+    }
 
     if (pri >= ANDROID_PRIORITY_BACKGROUND) {
-        rc = set_sched_policy(tid, SP_BACKGROUND);
-    } else if (getpriority(PRIO_PROCESS, tid) >= ANDROID_PRIORITY_BACKGROUND) {
-        rc = set_sched_policy(tid, SP_FOREGROUND);
+        rc = SetTaskProfiles(tid, {"SCHED_SP_BACKGROUND"}, true) ? 0 : -1;
+    } else if (curr_pri >= ANDROID_PRIORITY_BACKGROUND) {
+        SchedPolicy policy = SP_FOREGROUND;
+        // Change to the sched policy group of the process.
+        get_sched_policy(getpid(), &policy);
+        rc = SetTaskProfiles(tid, {get_sched_policy_profile_name(policy)}, true) ? 0 : -1;
     }
 
     if (rc) {
diff --git a/libutils/Timers.cpp b/libutils/Timers.cpp
index c3641ef..1172ae7 100644
--- a/libutils/Timers.cpp
+++ b/libutils/Timers.cpp
@@ -22,7 +22,8 @@
 #include <limits.h>
 #include <time.h>
 
-#if defined(__ANDROID__)
+// host linux support requires Linux 2.6.39+
+#if defined(__linux__)
 nsecs_t systemTime(int clock)
 {
     static const clockid_t clocks[] = {
@@ -41,8 +42,7 @@
 nsecs_t systemTime(int /*clock*/)
 {
     // Clock support varies widely across hosts. Mac OS doesn't support
-    // posix clocks, older glibcs don't support CLOCK_BOOTTIME and Windows
-    // is windows.
+    // CLOCK_BOOTTIME, and Windows is windows.
     struct timeval t;
     t.tv_sec = t.tv_usec = 0;
     gettimeofday(&t, nullptr);
diff --git a/libutils/Unicode.cpp b/libutils/Unicode.cpp
index 24a745a..b08e061 100644
--- a/libutils/Unicode.cpp
+++ b/libutils/Unicode.cpp
@@ -452,48 +452,6 @@
     *codePoint |= 0x3F & byte;
 }
 
-size_t utf8_to_utf32_length(const char *src, size_t src_len)
-{
-    if (src == nullptr || src_len == 0) {
-        return 0;
-    }
-    size_t ret = 0;
-    const char* cur;
-    const char* end;
-    size_t num_to_skip;
-    for (cur = src, end = src + src_len, num_to_skip = 1;
-         cur < end;
-         cur += num_to_skip, ret++) {
-        const char first_char = *cur;
-        num_to_skip = 1;
-        if ((first_char & 0x80) == 0) {  // ASCII
-            continue;
-        }
-        int32_t mask;
-
-        for (mask = 0x40; (first_char & mask); num_to_skip++, mask >>= 1) {
-        }
-    }
-    return ret;
-}
-
-void utf8_to_utf32(const char* src, size_t src_len, char32_t* dst)
-{
-    if (src == nullptr || src_len == 0 || dst == nullptr) {
-        return;
-    }
-
-    const char* cur = src;
-    const char* const end = src + src_len;
-    char32_t* cur_utf32 = dst;
-    while (cur < end) {
-        size_t num_read;
-        *cur_utf32++ = static_cast<char32_t>(utf32_at_internal(cur, &num_read));
-        cur += num_read;
-    }
-    *cur_utf32 = 0;
-}
-
 static inline uint32_t utf8_to_utf32_codepoint(const uint8_t *src, size_t length)
 {
     uint32_t unicode;
diff --git a/libutils/Vector_benchmark.cpp b/libutils/Vector_benchmark.cpp
new file mode 100644
index 0000000..c23d499
--- /dev/null
+++ b/libutils/Vector_benchmark.cpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <benchmark/benchmark.h>
+#include <utils/Vector.h>
+#include <vector>
+
+void BM_fill_android_vector(benchmark::State& state) {
+    android::Vector<char> v;
+    while (state.KeepRunning()) {
+        v.push('A');
+    }
+}
+BENCHMARK(BM_fill_android_vector);
+
+void BM_fill_std_vector(benchmark::State& state) {
+    std::vector<char> v;
+    while (state.KeepRunning()) {
+        v.push_back('A');
+    }
+}
+BENCHMARK(BM_fill_std_vector);
+
+void BM_prepend_android_vector(benchmark::State& state) {
+    android::Vector<char> v;
+    while (state.KeepRunning()) {
+        v.insertAt('A', 0);
+    }
+}
+BENCHMARK(BM_prepend_android_vector);
+
+void BM_prepend_std_vector(benchmark::State& state) {
+    std::vector<char> v;
+    while (state.KeepRunning()) {
+        v.insert(v.begin(), 'A');
+    }
+}
+BENCHMARK(BM_prepend_std_vector);
+
+BENCHMARK_MAIN();
diff --git a/libutils/include/utils/ByteOrder.h b/libutils/include/utils/ByteOrder.h
index 44ea13d..9b940e6 100644
--- a/libutils/include/utils/ByteOrder.h
+++ b/libutils/include/utils/ByteOrder.h
@@ -14,10 +14,17 @@
  * limitations under the License.
  */
 
-//
+#pragma once
 
-#ifndef _LIBS_UTILS_BYTE_ORDER_H
-#define _LIBS_UTILS_BYTE_ORDER_H
+/*
+ * If you're looking for a portable <endian.h> that's available on Android,
+ * Linux, macOS, and Windows, see <android-base/endian.h> instead.
+ *
+ * Nothing in this file is useful because all supported Android ABIs are
+ * little-endian and all our code that runs on the host assumes that the host is
+ * also little-endian. What pretense at big-endian support exists is completely
+ * untested and unlikely to actually work.
+ */
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -27,55 +34,12 @@
 #include <netinet/in.h>
 #endif
 
-/*
- * These macros are like the hton/ntoh byte swapping macros,
- * except they allow you to swap to and from the "device" byte
- * order.  The device byte order is the endianness of the target
- * device -- for the ARM CPUs we use today, this is little endian.
- *
- * Note that the byte swapping functions have not been optimized
- * much; performance is currently not an issue for them since the
- * intent is to allow us to avoid byte swapping on the device.
- */
+/* TODO: move this cruft to frameworks/. */
 
-static inline uint32_t android_swap_long(uint32_t v)
-{
-    return (v<<24) | ((v<<8)&0x00FF0000) | ((v>>8)&0x0000FF00) | (v>>24);
-}
+#define dtohl(x) (x)
+#define dtohs(x) (x)
+#define htodl(x) (x)
+#define htods(x) (x)
 
-static inline uint16_t android_swap_short(uint16_t v)
-{
-    return (v<<8) | (v>>8);
-}
-
-#define DEVICE_BYTE_ORDER LITTLE_ENDIAN
-
-#if BYTE_ORDER == DEVICE_BYTE_ORDER
-
-#define	dtohl(x)	(x)
-#define	dtohs(x)	(x)
-#define	htodl(x)	(x)
-#define	htods(x)	(x)
-
-#else
-
-#define	dtohl(x)	(android_swap_long(x))
-#define	dtohs(x)	(android_swap_short(x))
-#define	htodl(x)	(android_swap_long(x))
-#define	htods(x)	(android_swap_short(x))
-
-#endif
-
-#if BYTE_ORDER == LITTLE_ENDIAN
 #define fromlel(x) (x)
-#define fromles(x) (x)
 #define tolel(x) (x)
-#define toles(x) (x)
-#else
-#define fromlel(x) (android_swap_long(x))
-#define fromles(x) (android_swap_short(x))
-#define tolel(x) (android_swap_long(x))
-#define toles(x) (android_swap_short(x))
-#endif
-
-#endif // _LIBS_UTILS_BYTE_ORDER_H
diff --git a/libutils/include/utils/Compat.h b/libutils/include/utils/Compat.h
index dee577e..6002567 100644
--- a/libutils/include/utils/Compat.h
+++ b/libutils/include/utils/Compat.h
@@ -19,12 +19,20 @@
 
 #include <unistd.h>
 
+#if !defined(__MINGW32__)
+#include <sys/mman.h>
+#endif
+
 #if defined(__APPLE__)
 
 /* Mac OS has always had a 64-bit off_t, so it doesn't have off64_t. */
-
+static_assert(sizeof(off_t) >= 8, "This code requires that Mac OS have at least a 64-bit off_t.");
 typedef off_t off64_t;
 
+static inline void* mmap64(void* addr, size_t length, int prot, int flags, int fd, off64_t offset) {
+    return mmap(addr, length, prot, flags, fd, offset);
+}
+
 static inline off64_t lseek64(int fd, off64_t offset, int whence) {
     return lseek(fd, offset, whence);
 }
diff --git a/libutils/include/utils/Errors.h b/libutils/include/utils/Errors.h
index 1e03677..d14d223 100644
--- a/libutils/include/utils/Errors.h
+++ b/libutils/include/utils/Errors.h
@@ -19,6 +19,7 @@
 #include <errno.h>
 #include <stdint.h>
 #include <sys/types.h>
+#include <string>
 
 namespace android {
 
@@ -72,6 +73,9 @@
     UNEXPECTED_NULL     = (UNKNOWN_ERROR + 8),
 };
 
+// Human readable name of error
+std::string statusToString(status_t status);
+
 // Restore define; enumeration is in "android" namespace, so the value defined
 // there won't work for Win32 code in a different namespace.
 #ifdef _WIN32
diff --git a/libutils/include/utils/Flattenable.h b/libutils/include/utils/Flattenable.h
index 2c4b807..17c5e10 100644
--- a/libutils/include/utils/Flattenable.h
+++ b/libutils/include/utils/Flattenable.h
@@ -17,6 +17,9 @@
 #ifndef ANDROID_UTILS_FLATTENABLE_H
 #define ANDROID_UTILS_FLATTENABLE_H
 
+// DO NOT USE: please use parcelable instead
+// This code is deprecated and will not be supported via AIDL code gen. For data
+// to be sent over binder, please use parcelables.
 
 #include <stdint.h>
 #include <string.h>
@@ -28,7 +31,9 @@
 
 namespace android {
 
-
+// DO NOT USE: please use parcelable instead
+// This code is deprecated and will not be supported via AIDL code gen. For data
+// to be sent over binder, please use parcelables.
 class FlattenableUtils {
 public:
     template<size_t N>
@@ -84,7 +89,9 @@
     }
 };
 
-
+// DO NOT USE: please use parcelable instead
+// This code is deprecated and will not be supported via AIDL code gen. For data
+// to be sent over binder, please use parcelables.
 /*
  * The Flattenable protocol allows an object to serialize itself out
  * to a byte-buffer and an array of file descriptors.
@@ -136,6 +143,9 @@
     return static_cast<T*>(this)->T::unflatten(buffer, size, fds, count);
 }
 
+// DO NOT USE: please use parcelable instead
+// This code is deprecated and will not be supported via AIDL code gen. For data
+// to be sent over binder, please use parcelables.
 /*
  * LightFlattenable is a protocol allowing object to serialize themselves out
  * to a byte-buffer. Because it doesn't handle file-descriptors,
@@ -176,6 +186,9 @@
     return static_cast<T*>(this)->T::unflatten(buffer, size);
 }
 
+// DO NOT USE: please use parcelable instead
+// This code is deprecated and will not be supported via AIDL code gen. For data
+// to be sent over binder, please use parcelables.
 /*
  * LightFlattenablePod is an implementation of the LightFlattenable protocol
  * for POD (plain-old-data) objects.
diff --git a/libutils/include/utils/LightRefBase.h b/libutils/include/utils/LightRefBase.h
index e488e60..b04e5c1 100644
--- a/libutils/include/utils/LightRefBase.h
+++ b/libutils/include/utils/LightRefBase.h
@@ -47,8 +47,6 @@
         return mCount.load(std::memory_order_relaxed);
     }
 
-    typedef LightRefBase<T> basetype;
-
 protected:
     inline ~LightRefBase() { }
 
diff --git a/libutils/include/utils/RefBase.h b/libutils/include/utils/RefBase.h
index a105474..89f048d 100644
--- a/libutils/include/utils/RefBase.h
+++ b/libutils/include/utils/RefBase.h
@@ -188,9 +188,6 @@
 // ---------------------------------------------------------------------------
 namespace android {
 
-class TextOutput;
-TextOutput& printWeakPointer(TextOutput& to, const void* val);
-
 // ---------------------------------------------------------------------------
 
 #define COMPARE_WEAK(_op_)                                      \
@@ -299,8 +296,6 @@
         getWeakRefs()->trackMe(enable, retain); 
     }
 
-    typedef RefBase basetype;
-
 protected:
                             RefBase();
     virtual                 ~RefBase();
@@ -459,10 +454,8 @@
     weakref_type*   m_refs;
 };
 
-template <typename T>
-TextOutput& operator<<(TextOutput& to, const wp<T>& val);
-
 #undef COMPARE_WEAK
+#undef COMPARE_WEAK_FUNCTIONAL
 
 // ---------------------------------------------------------------------------
 // No user serviceable parts below here.
@@ -635,12 +628,6 @@
     }
 }
 
-template <typename T>
-inline TextOutput& operator<<(TextOutput& to, const wp<T>& val)
-{
-    return printWeakPointer(to, val.unsafe_get());
-}
-
 // ---------------------------------------------------------------------------
 
 // this class just serves as a namespace so TYPE::moveReferences can stay
diff --git a/libutils/include/utils/String16.h b/libutils/include/utils/String16.h
index afbc2ed..c0e3f1e 100644
--- a/libutils/include/utils/String16.h
+++ b/libutils/include/utils/String16.h
@@ -17,7 +17,8 @@
 #ifndef ANDROID_STRING16_H
 #define ANDROID_STRING16_H
 
-#include <string> // for std::string
+#include <iostream>
+#include <string>
 
 #include <utils/Errors.h>
 #include <utils/String8.h>
@@ -25,17 +26,12 @@
 
 // ---------------------------------------------------------------------------
 
-extern "C" {
-
-}
-
-// ---------------------------------------------------------------------------
-
 namespace android {
 
 // ---------------------------------------------------------------------------
 
-class String8;
+template <size_t N>
+class StaticString16;
 
 // DO NOT USE: please use std::u16string
 
@@ -43,7 +39,8 @@
 class String16
 {
 public:
-    /* use String16(StaticLinkage) if you're statically linking against
+    /*
+     * Use String16(StaticLinkage) if you're statically linking against
      * libutils and declaring an empty static String16, e.g.:
      *
      *   static String16 sAStaticEmptyString(String16::kEmptyString);
@@ -123,14 +120,123 @@
 
     inline                      operator const char16_t*() const;
 
-private:
-            const char16_t*     mString;
+    // Static and non-static String16 behave the same for the users, so
+    // this method isn't of much use for the users. It is public for testing.
+            bool                isStaticString() const;
+
+  private:
+    /*
+     * A flag indicating the type of underlying buffer.
+     */
+    static constexpr uint32_t kIsSharedBufferAllocated = 0x80000000;
+
+    /*
+     * alloc() returns void* so that SharedBuffer class is not exposed.
+     */
+    static void* alloc(size_t size);
+    static char16_t* allocFromUTF8(const char* u8str, size_t u8len);
+    static char16_t* allocFromUTF16(const char16_t* u16str, size_t u16len);
+
+    /*
+     * edit() and editResize() return void* so that SharedBuffer class
+     * is not exposed.
+     */
+    void* edit();
+    void* editResize(size_t new_size);
+
+    void acquire();
+    void release();
+
+    size_t staticStringSize() const;
+
+    const char16_t* mString;
+
+protected:
+    /*
+     * Data structure used to allocate static storage for static String16.
+     *
+     * Note that this data structure and SharedBuffer are used interchangably
+     * as the underlying data structure for a String16.  Therefore, the layout
+     * of this data structure must match the part in SharedBuffer that is
+     * visible to String16.
+     */
+    template <size_t N>
+    struct StaticData {
+        // The high bit of 'size' is used as a flag.
+        static_assert(N - 1 < kIsSharedBufferAllocated, "StaticString16 too long!");
+        constexpr StaticData() : size(N - 1), data{0} {}
+        const uint32_t size;
+        char16_t data[N];
+
+        constexpr StaticData(const StaticData<N>&) = default;
+    };
+
+    /*
+     * Helper function for constructing a StaticData object.
+     */
+    template <size_t N>
+    static constexpr const StaticData<N> makeStaticData(const char16_t (&s)[N]) {
+        StaticData<N> r;
+        // The 'size' field is at the same location where mClientMetadata would
+        // be for a SharedBuffer.  We do NOT set kIsSharedBufferAllocated flag
+        // here.
+        for (size_t i = 0; i < N - 1; ++i) r.data[i] = s[i];
+        return r;
+    }
+
+    template <size_t N>
+    explicit constexpr String16(const StaticData<N>& s) : mString(s.data) {}
+
+public:
+    template <size_t N>
+    explicit constexpr String16(const StaticString16<N>& s) : mString(s.mString) {}
 };
 
 // String16 can be trivially moved using memcpy() because moving does not
 // require any change to the underlying SharedBuffer contents or reference count.
 ANDROID_TRIVIAL_MOVE_TRAIT(String16)
 
+static inline std::ostream& operator<<(std::ostream& os, const String16& str) {
+    os << String8(str).c_str();
+    return os;
+}
+
+// ---------------------------------------------------------------------------
+
+/*
+ * A StaticString16 object is a specialized String16 object.  Instead of holding
+ * the string data in a ref counted SharedBuffer object, it holds data in a
+ * buffer within StaticString16 itself.  Note that this buffer is NOT ref
+ * counted and is assumed to be available for as long as there is at least a
+ * String16 object using it.  Therefore, one must be extra careful to NEVER
+ * assign a StaticString16 to a String16 that outlives the StaticString16
+ * object.
+ *
+ * THE SAFEST APPROACH IS TO USE StaticString16 ONLY AS GLOBAL VARIABLES.
+ *
+ * A StaticString16 SHOULD NEVER APPEAR IN APIs.  USE String16 INSTEAD.
+ */
+template <size_t N>
+class StaticString16 : public String16 {
+public:
+    constexpr StaticString16(const char16_t (&s)[N]) : String16(mData), mData(makeStaticData(s)) {}
+
+    constexpr StaticString16(const StaticString16<N>& other)
+        : String16(mData), mData(other.mData) {}
+
+    constexpr StaticString16(const StaticString16<N>&&) = delete;
+
+    // There is no reason why one would want to 'new' a StaticString16.  Delete
+    // it to discourage misuse.
+    static void* operator new(std::size_t) = delete;
+
+private:
+    const StaticData<N> mData;
+};
+
+template <typename F>
+StaticString16(const F&)->StaticString16<sizeof(F) / sizeof(char16_t)>;
+
 // ---------------------------------------------------------------------------
 // No user servicable parts below.
 
diff --git a/libutils/include/utils/String8.h b/libutils/include/utils/String8.h
index c8f584e..0ddcbb2 100644
--- a/libutils/include/utils/String8.h
+++ b/libutils/include/utils/String8.h
@@ -95,13 +95,6 @@
                     __attribute__((format (printf, 2, 3)));
             status_t            appendFormatV(const char* fmt, va_list args);
 
-            // Note that this function takes O(N) time to calculate the value.
-            // No cache value is stored.
-            size_t              getUtf32Length() const;
-            int32_t             getUtf32At(size_t index,
-                                           size_t *next_index) const;
-            void                getUtf32(char32_t* dst) const;
-
     inline  String8&            operator=(const String8& other);
     inline  String8&            operator=(const char* other);
 
diff --git a/libutils/include/utils/StrongPointer.h b/libutils/include/utils/StrongPointer.h
index 9cd7c75..6f4fb47 100644
--- a/libutils/include/utils/StrongPointer.h
+++ b/libutils/include/utils/StrongPointer.h
@@ -27,43 +27,6 @@
 
 // ---------------------------------------------------------------------------
 
-// TODO: Maybe remove sp<> ? wp<> comparison? These are dangerous: If the wp<>
-// was created before the sp<>, and they point to different objects, they may
-// compare equal even if they are entirely unrelated. E.g. CameraService
-// currently performa such comparisons.
-
-#define COMPARE_STRONG(_op_)                                           \
-template<typename U>                                            \
-inline bool operator _op_ (const sp<U>& o) const {              \
-    return m_ptr _op_ o.m_ptr;                                  \
-}                                                               \
-template<typename U>                                            \
-inline bool operator _op_ (const U* o) const {                  \
-    return m_ptr _op_ o;                                        \
-}                                                               \
-/* Needed to handle type inference for nullptr: */              \
-inline bool operator _op_ (const T* o) const {                  \
-    return m_ptr _op_ o;                                        \
-}
-
-template<template<typename C> class comparator, typename T, typename U>
-static inline bool _sp_compare_(T* a, U* b) {
-    return comparator<typename std::common_type<T*, U*>::type>()(a, b);
-}
-
-// Use std::less and friends to avoid undefined behavior when ordering pointers
-// to different objects.
-#define COMPARE_STRONG_FUNCTIONAL(_op_, _compare_)               \
-template<typename U>                                             \
-inline bool operator _op_ (const sp<U>& o) const {               \
-    return _sp_compare_<_compare_>(m_ptr, o.m_ptr);              \
-}                                                                \
-template<typename U>                                             \
-inline bool operator _op_ (const U* o) const {                   \
-    return _sp_compare_<_compare_>(m_ptr, o);                    \
-}
-// ---------------------------------------------------------------------------
-
 template<typename T>
 class sp {
 public:
@@ -102,15 +65,6 @@
     inline T*       get() const            { return m_ptr; }
     inline explicit operator bool () const { return m_ptr != nullptr; }
 
-    // Operators
-
-    COMPARE_STRONG(==)
-    COMPARE_STRONG(!=)
-    COMPARE_STRONG_FUNCTIONAL(>, std::greater)
-    COMPARE_STRONG_FUNCTIONAL(<, std::less)
-    COMPARE_STRONG_FUNCTIONAL(<=, std::less_equal)
-    COMPARE_STRONG_FUNCTIONAL(>=, std::greater_equal)
-
     // Punt these to the wp<> implementation.
     template<typename U>
     inline bool operator == (const wp<U>& o) const {
@@ -122,26 +76,111 @@
         return o != *this;
     }
 
-private:    
+private:
     template<typename Y> friend class sp;
     template<typename Y> friend class wp;
     void set_pointer(T* ptr);
+    static inline void check_not_on_stack(const void* ptr);
     T* m_ptr;
 };
 
-// For code size reasons, we do not want this inlined or templated.
-void sp_report_race();
+#define COMPARE_STRONG(_op_)                                           \
+    template <typename T, typename U>                                  \
+    static inline bool operator _op_(const sp<T>& t, const sp<U>& u) { \
+        return t.get() _op_ u.get();                                   \
+    }                                                                  \
+    template <typename T, typename U>                                  \
+    static inline bool operator _op_(const T* t, const sp<U>& u) {     \
+        return t _op_ u.get();                                         \
+    }                                                                  \
+    template <typename T, typename U>                                  \
+    static inline bool operator _op_(const sp<T>& t, const U* u) {     \
+        return t.get() _op_ u;                                         \
+    }                                                                  \
+    template <typename T>                                              \
+    static inline bool operator _op_(const sp<T>& t, std::nullptr_t) { \
+        return t.get() _op_ nullptr;                                   \
+    }                                                                  \
+    template <typename T>                                              \
+    static inline bool operator _op_(std::nullptr_t, const sp<T>& t) { \
+        return nullptr _op_ t.get();                                   \
+    }
 
-#undef COMPARE
+template <template <typename C> class comparator, typename T, typename U>
+static inline bool _sp_compare_(T* a, U* b) {
+    return comparator<typename std::common_type<T*, U*>::type>()(a, b);
+}
+
+#define COMPARE_STRONG_FUNCTIONAL(_op_, _compare_)                     \
+    template <typename T, typename U>                                  \
+    static inline bool operator _op_(const sp<T>& t, const sp<U>& u) { \
+        return _sp_compare_<_compare_>(t.get(), u.get());              \
+    }                                                                  \
+    template <typename T, typename U>                                  \
+    static inline bool operator _op_(const T* t, const sp<U>& u) {     \
+        return _sp_compare_<_compare_>(t, u.get());                    \
+    }                                                                  \
+    template <typename T, typename U>                                  \
+    static inline bool operator _op_(const sp<T>& t, const U* u) {     \
+        return _sp_compare_<_compare_>(t.get(), u);                    \
+    }                                                                  \
+    template <typename T>                                              \
+    static inline bool operator _op_(const sp<T>& t, std::nullptr_t) { \
+        return _sp_compare_<_compare_>(t.get(), nullptr);              \
+    }                                                                  \
+    template <typename T>                                              \
+    static inline bool operator _op_(std::nullptr_t, const sp<T>& t) { \
+        return _sp_compare_<_compare_>(nullptr, t.get());              \
+    }
+
+COMPARE_STRONG(==)
+COMPARE_STRONG(!=)
+COMPARE_STRONG_FUNCTIONAL(>, std::greater)
+COMPARE_STRONG_FUNCTIONAL(<, std::less)
+COMPARE_STRONG_FUNCTIONAL(<=, std::less_equal)
+COMPARE_STRONG_FUNCTIONAL(>=, std::greater_equal)
+
+#undef COMPARE_STRONG
+#undef COMPARE_STRONG_FUNCTIONAL
+
+// For code size reasons, we do not want these inlined or templated.
+void sp_report_race();
+void sp_report_stack_pointer();
 
 // ---------------------------------------------------------------------------
 // No user serviceable parts below here.
 
+// Check whether address is definitely on the calling stack.  We actually check whether it is on
+// the same 4K page as the frame pointer.
+//
+// Assumptions:
+// - Pages are never smaller than 4K (MIN_PAGE_SIZE)
+// - Malloced memory never shares a page with a stack.
+//
+// It does not appear safe to broaden this check to include adjacent pages; apparently this code
+// is used in environments where there may not be a guard page below (at higher addresses than)
+// the bottom of the stack.
+//
+// TODO: Consider adding make_sp<T>() to allocate an object and wrap the resulting pointer safely
+// without checking overhead.
+template <typename T>
+void sp<T>::check_not_on_stack(const void* ptr) {
+    static constexpr int MIN_PAGE_SIZE = 0x1000;  // 4K. Safer than including sys/user.h.
+    static constexpr uintptr_t MIN_PAGE_MASK = ~static_cast<uintptr_t>(MIN_PAGE_SIZE - 1);
+    uintptr_t my_frame_address =
+            reinterpret_cast<uintptr_t>(__builtin_frame_address(0 /* this frame */));
+    if (((reinterpret_cast<uintptr_t>(ptr) ^ my_frame_address) & MIN_PAGE_MASK) == 0) {
+        sp_report_stack_pointer();
+    }
+}
+
 template<typename T>
 sp<T>::sp(T* other)
         : m_ptr(other) {
-    if (other)
+    if (other) {
+        check_not_on_stack(other);
         other->incStrong(this);
+    }
 }
 
 template<typename T>
@@ -159,8 +198,10 @@
 template<typename T> template<typename U>
 sp<T>::sp(U* other)
         : m_ptr(other) {
-    if (other)
+    if (other) {
+        check_not_on_stack(other);
         (static_cast<T*>(other))->incStrong(this);
+    }
 }
 
 template<typename T> template<typename U>
@@ -207,7 +248,10 @@
 template<typename T>
 sp<T>& sp<T>::operator =(T* other) {
     T* oldPtr(*const_cast<T* volatile*>(&m_ptr));
-    if (other) other->incStrong(this);
+    if (other) {
+        check_not_on_stack(other);
+        other->incStrong(this);
+    }
     if (oldPtr) oldPtr->decStrong(this);
     if (oldPtr != *const_cast<T* volatile*>(&m_ptr)) sp_report_race();
     m_ptr = other;
diff --git a/libutils/include/utils/Trace.h b/libutils/include/utils/Trace.h
index 4b9c91e..9986bf5 100644
--- a/libutils/include/utils/Trace.h
+++ b/libutils/include/utils/Trace.h
@@ -17,7 +17,12 @@
 #ifndef ANDROID_TRACE_H
 #define ANDROID_TRACE_H
 
-#if defined(__ANDROID__)
+#if defined(_WIN32)
+
+#define ATRACE_NAME(...)
+#define ATRACE_CALL()
+
+#else  // !_WIN32
 
 #include <stdint.h>
 
@@ -28,7 +33,7 @@
 // ATRACE_NAME traces from its location until the end of its enclosing scope.
 #define _PASTE(x, y) x ## y
 #define PASTE(x, y) _PASTE(x,y)
-#define ATRACE_NAME(name) android::ScopedTrace PASTE(___tracer, __LINE__) (ATRACE_TAG, name)
+#define ATRACE_NAME(name) ::android::ScopedTrace PASTE(___tracer, __LINE__)(ATRACE_TAG, name)
 
 // ATRACE_CALL is an ATRACE_NAME that uses the current function name.
 #define ATRACE_CALL() ATRACE_NAME(__FUNCTION__)
@@ -51,11 +56,6 @@
 
 }  // namespace android
 
-#else // !__ANDROID__
-
-#define ATRACE_NAME(...)
-#define ATRACE_CALL()
-
-#endif // __ANDROID__
+#endif  // _WIN32
 
 #endif // ANDROID_TRACE_H
diff --git a/libutils/include/utils/Unicode.h b/libutils/include/utils/Unicode.h
index a2aaa47..fc6712d 100644
--- a/libutils/include/utils/Unicode.h
+++ b/libutils/include/utils/Unicode.h
@@ -129,18 +129,6 @@
 ssize_t utf8_length(const char *src);
 
 /**
- * Measure the length of a UTF-32 string.
- */
-size_t utf8_to_utf32_length(const char *src, size_t src_len);
-
-/**
- * Stores a UTF-32 string converted from "src" in "dst". "dst" must be large
- * enough to store the entire converted string as measured by
- * utf8_to_utf32_length plus space for a NUL terminator.
- */
-void utf8_to_utf32(const char* src, size_t src_len, char32_t* dst);
-
-/**
  * Returns the UTF-16 length of UTF-8 string "src". Returns -1 in case
  * it's invalid utf8. No buffer over-read occurs because of bound checks. Using overreadIsFatal you
  * can ask to log a message and fail in case the invalid utf8 could have caused an override if no
diff --git a/libvndksupport/Android.bp b/libvndksupport/Android.bp
index 546c15c..b92c76c 100644
--- a/libvndksupport/Android.bp
+++ b/libvndksupport/Android.bp
@@ -1,8 +1,7 @@
-subdirs = ["tests"]
-
 cc_library {
     name: "libvndksupport",
-    srcs: ["linker.c"],
+    native_bridge_supported: true,
+    srcs: ["linker.cpp"],
     cflags: [
         "-Wall",
         "-Werror",
@@ -22,6 +21,7 @@
 
 llndk_library {
     name: "libvndksupport",
+    native_bridge_supported: true,
     symbol_file: "libvndksupport.map.txt",
     export_include_dirs: ["include"],
 }
diff --git a/libvndksupport/libvndksupport.map.txt b/libvndksupport/libvndksupport.map.txt
index ac9a99c..a44ed18 100644
--- a/libvndksupport/libvndksupport.map.txt
+++ b/libvndksupport/libvndksupport.map.txt
@@ -1,8 +1,8 @@
 LIBVNDKSUPPORT {
   global:
-    android_is_in_vendor_process; # vndk apex
-    android_load_sphal_library; # vndk apex
-    android_unload_sphal_library; # vndk apex
+    android_is_in_vendor_process; # llndk apex
+    android_load_sphal_library; # llndk apex
+    android_unload_sphal_library; # llndk apex
   local:
     *;
 };
diff --git a/libvndksupport/linker.c b/libvndksupport/linker.c
deleted file mode 100644
index 84c2132..0000000
--- a/libvndksupport/linker.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "linker.h"
-
-#include <android/dlext.h>
-#include <dlfcn.h>
-
-#define LOG_TAG "vndksupport"
-#include <log/log.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-__attribute__((weak)) extern struct android_namespace_t* android_get_exported_namespace(const char*);
-__attribute__((weak)) extern void* android_dlopen_ext(const char*, int, const android_dlextinfo*);
-
-static const char* namespace_name = NULL;
-
-static struct android_namespace_t* get_vendor_namespace() {
-    const char* namespace_names[] = {"sphal", "default", NULL};
-    static struct android_namespace_t* vendor_namespace = NULL;
-    if (vendor_namespace == NULL) {
-        int name_idx = 0;
-        while (namespace_names[name_idx] != NULL) {
-            if (android_get_exported_namespace != NULL) {
-                vendor_namespace = android_get_exported_namespace(namespace_names[name_idx]);
-            }
-            if (vendor_namespace != NULL) {
-                namespace_name = namespace_names[name_idx];
-                break;
-            }
-            name_idx++;
-        }
-    }
-    return vendor_namespace;
-}
-
-int android_is_in_vendor_process() {
-    // Special case init, since when init runs, ld.config.<ver>.txt hasn't been
-    // loaded (sysprop service isn't up for init to know <ver>).
-    if (getpid() == 1) {
-        return 0;
-    }
-    if (android_get_exported_namespace == NULL) {
-        ALOGD("android_get_exported_namespace() not available. Assuming system process.");
-        return 0;
-    }
-
-    // In vendor process, 'vndk' namespace is not visible, whereas in system
-    // process, it is.
-    return android_get_exported_namespace("vndk") == NULL;
-}
-
-void* android_load_sphal_library(const char* name, int flag) {
-    struct android_namespace_t* vendor_namespace = get_vendor_namespace();
-    if (vendor_namespace != NULL) {
-        const android_dlextinfo dlextinfo = {
-            .flags = ANDROID_DLEXT_USE_NAMESPACE, .library_namespace = vendor_namespace,
-        };
-        void* handle = NULL;
-        if (android_dlopen_ext != NULL) {
-            handle = android_dlopen_ext(name, flag, &dlextinfo);
-        }
-        if (!handle) {
-            ALOGE("Could not load %s from %s namespace: %s.", name, namespace_name, dlerror());
-        }
-        return handle;
-    } else {
-        ALOGD("Loading %s from current namespace instead of sphal namespace.", name);
-        return dlopen(name, flag);
-    }
-}
-
-int android_unload_sphal_library(void* handle) {
-    return dlclose(handle);
-}
diff --git a/libvndksupport/linker.cpp b/libvndksupport/linker.cpp
new file mode 100644
index 0000000..30b9c2e
--- /dev/null
+++ b/libvndksupport/linker.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "vndksupport"
+
+#include "linker.h"
+
+#include <android/dlext.h>
+#include <dlfcn.h>
+#include <log/log.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <initializer_list>
+
+extern "C" android_namespace_t* android_get_exported_namespace(const char*);
+
+namespace {
+
+struct VendorNamespace {
+    android_namespace_t* ptr = nullptr;
+    const char* name = nullptr;
+};
+
+}  // anonymous namespace
+
+static VendorNamespace get_vendor_namespace() {
+    static VendorNamespace result = ([] {
+        for (const char* name : {"sphal", "default"}) {
+            if (android_namespace_t* ns = android_get_exported_namespace(name)) {
+                return VendorNamespace{ns, name};
+            }
+        }
+        return VendorNamespace{};
+    })();
+    return result;
+}
+
+int android_is_in_vendor_process() {
+    // Special case init, since when init runs, ld.config.<ver>.txt hasn't been
+    // loaded (sysprop service isn't up for init to know <ver>).
+    if (getpid() == 1) {
+        return 0;
+    }
+
+    // In vendor process, 'vndk' namespace is not visible, whereas in system
+    // process, it is.
+    return android_get_exported_namespace("vndk") == nullptr;
+}
+
+void* android_load_sphal_library(const char* name, int flag) {
+    VendorNamespace vendor_namespace = get_vendor_namespace();
+    if (vendor_namespace.ptr != nullptr) {
+        const android_dlextinfo dlextinfo = {
+                .flags = ANDROID_DLEXT_USE_NAMESPACE,
+                .library_namespace = vendor_namespace.ptr,
+        };
+        void* handle = android_dlopen_ext(name, flag, &dlextinfo);
+        if (!handle) {
+            ALOGE("Could not load %s from %s namespace: %s.", name, vendor_namespace.name,
+                  dlerror());
+        }
+        return handle;
+    } else {
+        ALOGD("Loading %s from current namespace instead of sphal namespace.", name);
+        return dlopen(name, flag);
+    }
+}
+
+int android_unload_sphal_library(void* handle) {
+    return dlclose(handle);
+}
diff --git a/libvndksupport/tests/linker_test.cpp b/libvndksupport/tests/linker_test.cpp
index 7ce27d4..d0c8ef7 100644
--- a/libvndksupport/tests/linker_test.cpp
+++ b/libvndksupport/tests/linker_test.cpp
@@ -21,11 +21,6 @@
 #include <vndksupport/linker.h>
 #include <string>
 
-// Since the test executable will be in /data and ld.config.txt does not
-// configure sphal namespace for executables in /data, the call to
-// android_load_sphal_library will always fallback to the plain dlopen from the
-// default namespace.
-
 // Let's use libEGL_<chipset>.so as a SP-HAL in test
 static std::string find_sphal_lib() {
     const char* path =
diff --git a/libziparchive/Android.bp b/libziparchive/Android.bp
index bc1543b..553136a 100644
--- a/libziparchive/Android.bp
+++ b/libziparchive/Android.bp
@@ -26,6 +26,8 @@
         // Incorrectly warns when C++11 empty brace {} initializer is used.
         // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61489
         "-Wno-missing-field-initializers",
+        "-Wconversion",
+        "-Wno-sign-conversion",
     ],
 
     // Enable -Wold-style-cast only for non-Windows targets.  _islower_l,
@@ -74,6 +76,10 @@
         "liblog",
     ],
 
+    // for FRIEND_TEST
+    static_libs: ["libgtest_prod"],
+    export_static_lib_headers: ["libgtest_prod"],
+
     export_include_dirs: ["include"],
 }
 
@@ -82,6 +88,7 @@
     host_supported: true,
     vendor_available: true,
     recovery_available: true,
+    native_bridge_supported: true,
     vndk: {
         enabled: true,
     },
@@ -102,6 +109,12 @@
             enabled: true,
         },
     },
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.art.debug",
+        "com.android.art.release",
+    ],
 }
 
 // Tests.
@@ -168,12 +181,38 @@
 }
 
 cc_binary {
-    name: "unzip",
+    name: "ziptool",
     defaults: ["libziparchive_flags"],
-    srcs: ["unzip.cpp"],
+    srcs: ["ziptool.cpp"],
     shared_libs: [
         "libbase",
         "libziparchive",
     ],
     recovery_available: true,
+    host_supported: true,
+    target: {
+        android: {
+            symlinks: ["unzip", "zipinfo"],
+        },
+    },
+}
+
+cc_fuzz {
+    name: "libziparchive_fuzzer",
+    srcs: ["libziparchive_fuzzer.cpp"],
+    static_libs: ["libziparchive", "libbase", "libz", "liblog"],
+    host_supported: true,
+    corpus: ["testdata/*"],
+}
+
+sh_test {
+    name: "ziptool-tests",
+    src: "run-ziptool-tests-on-android.sh",
+    filename: "run-ziptool-tests-on-android.sh",
+    test_suites: ["general-tests"],
+    host_supported: true,
+    device_supported: false,
+    test_config: "ziptool-tests.xml",
+    data: ["cli-tests/**/*"],
+    target_required: ["cli-test", "ziptool"],
 }
diff --git a/libziparchive/cli-tests/files/example.zip b/libziparchive/cli-tests/files/example.zip
new file mode 100644
index 0000000..c3292e9
--- /dev/null
+++ b/libziparchive/cli-tests/files/example.zip
Binary files differ
diff --git a/libziparchive/cli-tests/unzip.test b/libziparchive/cli-tests/unzip.test
new file mode 100755
index 0000000..6e5cbf2
--- /dev/null
+++ b/libziparchive/cli-tests/unzip.test
@@ -0,0 +1,148 @@
+# unzip tests.
+
+# Note: since "master key", Android uses libziparchive for all zip file
+# handling, and that scans the whole central directory immediately. Not only
+# lookups by name but also iteration is implemented using the resulting hash
+# table, meaning that any test that makes assumptions about iteration order
+# will fail on Android.
+
+name: unzip -l
+command: unzip -l $FILES/example.zip d1/d2/x.txt
+after: [ ! -f d1/d2/x.txt ]
+expected-stdout:
+	Archive:  $FILES/example.zip
+	  Length      Date    Time    Name
+	---------  ---------- -----   ----
+	     1024  2017-06-04 08:45   d1/d2/x.txt
+	---------                     -------
+	     1024                     1 file
+---
+
+name: unzip -lq
+command: unzip -lq $FILES/example.zip d1/d2/x.txt
+after: [ ! -f d1/d2/x.txt ]
+expected-stdout:
+	  Length      Date    Time    Name
+	---------  ---------- -----   ----
+	     1024  2017-06-04 08:45   d1/d2/x.txt
+	---------                     -------
+	     1024                     1 file
+---
+
+name: unzip -lv
+command: unzip -lv $FILES/example.zip d1/d2/x.txt
+after: [ ! -f d1/d2/file ]
+expected-stdout:
+	Archive:  $FILES/example.zip
+	 Length   Method    Size  Cmpr    Date    Time   CRC-32   Name
+	--------  ------  ------- ---- ---------- ----- --------  ----
+	    1024  Defl:N       11  99% 2017-06-04 08:45 48d7f063  d1/d2/x.txt
+	--------          -------  ---                            -------
+	    1024               11  99%                            1 file
+---
+
+name: unzip -v
+command: unzip -v $FILES/example.zip d1/d2/x.txt
+after: [ ! -f d1/d2/file ]
+expected-stdout:
+	Archive:  $FILES/example.zip
+	 Length   Method    Size  Cmpr    Date    Time   CRC-32   Name
+	--------  ------  ------- ---- ---------- ----- --------  ----
+	    1024  Defl:N       11  99% 2017-06-04 08:45 48d7f063  d1/d2/x.txt
+	--------          -------  ---                            -------
+	    1024               11  99%                            1 file
+---
+
+name: unzip one file
+command: unzip -q $FILES/example.zip d1/d2/a.txt && cat d1/d2/a.txt
+after: [ ! -f d1/d2/b.txt ]
+expected-stdout:
+	a
+---
+
+name: unzip all files
+command: unzip -q $FILES/example.zip
+after: [ -f d1/d2/a.txt ]
+after: [ -f d1/d2/b.txt ]
+after: [ -f d1/d2/c.txt ]
+after: [ -f d1/d2/empty.txt ]
+after: [ -f d1/d2/x.txt ]
+after: [ -d d1/d2/dir ]
+expected-stdout:
+---
+
+name: unzip -o
+before: mkdir -p d1/d2
+before: echo b > d1/d2/a.txt
+command: unzip -q -o $FILES/example.zip d1/d2/a.txt && cat d1/d2/a.txt
+expected-stdout:
+	a
+---
+
+name: unzip -n
+before: mkdir -p d1/d2
+before: echo b > d1/d2/a.txt
+command: unzip -q -n $FILES/example.zip d1/d2/a.txt && cat d1/d2/a.txt
+expected-stdout:
+	b
+---
+
+# The reference implementation will create *one* level of missing directories,
+# so this succeeds.
+name: unzip -d shallow non-existent
+command: unzip -q -d will-be-created $FILES/example.zip d1/d2/a.txt
+after: [ -d will-be-created ]
+after: [ -f will-be-created/d1/d2/a.txt ]
+---
+
+# The reference implementation will *only* create one level of missing
+# directories, so this fails.
+name: unzip -d deep non-existent
+command: unzip -q -d oh-no/will-not-be-created $FILES/example.zip d1/d2/a.txt 2> stderr ; echo $? > status
+after: [ ! -d oh-no ]
+after: [ ! -d oh-no/will-not-be-created ]
+after: [ ! -f oh-no/will-not-be-created/d1/d2/a.txt ]
+after: grep -q "oh-no/will-not-be-created" stderr
+after: grep -q "No such file or directory" stderr
+# The reference implementation has *lots* of non-zero exit values, but we stick to 0 and 1.
+after: [ $(cat status) -gt 0 ]
+---
+
+name: unzip -d exists
+before: mkdir dir
+command: unzip -q -d dir $FILES/example.zip d1/d2/a.txt && cat dir/d1/d2/a.txt
+after: [ ! -f d1/d2/a.txt ]
+expected-stdout:
+	a
+---
+
+name: unzip -p
+command: unzip -p $FILES/example.zip d1/d2/a.txt
+after: [ ! -f d1/d2/a.txt ]
+expected-stdout:
+	a
+---
+
+name: unzip -x FILE...
+# Note: the RI ignores -x DIR for some reason, but it's not obvious we should.
+command: unzip -q $FILES/example.zip -x d1/d2/a.txt d1/d2/b.txt d1/d2/empty.txt d1/d2/x.txt && cat d1/d2/c.txt
+after: [ ! -f d1/d2/a.txt ]
+after: [ ! -f d1/d2/b.txt ]
+after: [ ! -f d1/d2/empty.txt ]
+after: [ ! -f d1/d2/x.txt ]
+after: [ -d d1/d2/dir ]
+expected-stdout:
+	ccc
+---
+
+name: unzip FILE -x FILE...
+command: unzip -q $FILES/example.zip d1/d2/a.txt d1/d2/b.txt -x d1/d2/a.txt && cat d1/d2/b.txt
+after: [ ! -f d1/d2/a.txt ]
+after: [ -f d1/d2/b.txt ]
+after: [ ! -f d1/d2/c.txt ]
+after: [ ! -f d1/d2/empty.txt ]
+after: [ ! -f d1/d2/x.txt ]
+after: [ ! -d d1/d2/dir ]
+expected-stdout:
+	bb
+---
diff --git a/libziparchive/cli-tests/zipinfo.test b/libziparchive/cli-tests/zipinfo.test
new file mode 100755
index 0000000..d5bce1c
--- /dev/null
+++ b/libziparchive/cli-tests/zipinfo.test
@@ -0,0 +1,53 @@
+# zipinfo tests.
+
+# Note: since "master key", Android uses libziparchive for all zip file
+# handling, and that scans the whole central directory immediately. Not only
+# lookups by name but also iteration is implemented using the resulting hash
+# table, meaning that any test that makes assumptions about iteration order
+# will fail on Android.
+
+name: zipinfo -1
+command: zipinfo -1 $FILES/example.zip | sort
+expected-stdout:
+	d1/
+	d1/d2/a.txt
+	d1/d2/b.txt
+	d1/d2/c.txt
+	d1/d2/dir/
+	d1/d2/empty.txt
+	d1/d2/x.txt
+---
+
+name: zipinfo header
+command: zipinfo $FILES/example.zip | head -2
+expected-stdout:
+	Archive:  $FILES/example.zip
+	Zip file size: 1082 bytes, number of entries: 7
+---
+
+name: zipinfo footer
+command: zipinfo $FILES/example.zip | tail -1
+expected-stdout:
+	7 files, 1033 bytes uncompressed, 20 bytes compressed:  98.1%
+---
+
+name: zipinfo directory
+# The RI doesn't use ISO dates.
+command: zipinfo $FILES/example.zip d1/ | sed s/17-Jun-/2017-06-/
+expected-stdout:
+	drwxr-x---  3.0 unx        0 bx stor 2017-06-04 08:40 d1/
+---
+
+name: zipinfo stored
+# The RI doesn't use ISO dates.
+command: zipinfo $FILES/example.zip d1/d2/empty.txt | sed s/17-Jun-/2017-06-/
+expected-stdout:
+	-rw-r-----  3.0 unx        0 bx stor 2017-06-04 08:43 d1/d2/empty.txt
+---
+
+name: zipinfo deflated
+# The RI doesn't use ISO dates.
+command: zipinfo $FILES/example.zip d1/d2/x.txt | sed s/17-Jun-/2017-06-/
+expected-stdout:
+	-rw-r-----  3.0 unx     1024 tx defN 2017-06-04 08:45 d1/d2/x.txt
+---
diff --git a/libziparchive/entry_name_utils-inl.h b/libziparchive/entry_name_utils-inl.h
index 1714586..10311b5 100644
--- a/libziparchive/entry_name_utils-inl.h
+++ b/libziparchive/entry_name_utils-inl.h
@@ -20,9 +20,15 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <limits>
+
 // Check if |length| bytes at |entry_name| constitute a valid entry name.
-// Entry names must be valid UTF-8 and must not contain '0'.
+// Entry names must be valid UTF-8 and must not contain '0'. They also must
+// fit into the central directory record.
 inline bool IsValidEntryName(const uint8_t* entry_name, const size_t length) {
+  if (length > std::numeric_limits<uint16_t>::max()) {
+    return false;
+  }
   for (size_t i = 0; i < length; ++i) {
     const uint8_t byte = entry_name[i];
     if (byte == 0) {
@@ -35,7 +41,8 @@
       return false;
     } else {
       // 2-5 byte sequences.
-      for (uint8_t first = (byte & 0x7f) << 1; first & 0x80; first = (first & 0x7f) << 1) {
+      for (uint8_t first = static_cast<uint8_t>((byte & 0x7f) << 1); first & 0x80;
+           first = static_cast<uint8_t>((first & 0x7f) << 1)) {
         ++i;
 
         // Missing continuation byte..
diff --git a/libziparchive/include/ziparchive/zip_archive.h b/libziparchive/include/ziparchive/zip_archive.h
index ab38dfd..fbc47db 100644
--- a/libziparchive/include/ziparchive/zip_archive.h
+++ b/libziparchive/include/ziparchive/zip_archive.h
@@ -25,6 +25,9 @@
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
+#include <string>
+#include <string_view>
+
 #include "android-base/off64_t.h"
 
 /* Zip compression methods we support */
@@ -33,52 +36,27 @@
   kCompressDeflated = 8,  // standard deflate
 };
 
-struct ZipString {
-  const uint8_t* name;
-  uint16_t name_length;
-
-  ZipString() {}
-
-  /*
-   * entry_name has to be an c-style string with only ASCII characters.
-   */
-  explicit ZipString(const char* entry_name);
-
-  bool operator==(const ZipString& rhs) const {
-    return name && (name_length == rhs.name_length) && (memcmp(name, rhs.name, name_length) == 0);
-  }
-
-  bool StartsWith(const ZipString& prefix) const {
-    return name && (name_length >= prefix.name_length) &&
-           (memcmp(name, prefix.name, prefix.name_length) == 0);
-  }
-
-  bool EndsWith(const ZipString& suffix) const {
-    return name && (name_length >= suffix.name_length) &&
-           (memcmp(name + name_length - suffix.name_length, suffix.name, suffix.name_length) == 0);
-  }
-};
-
 /*
  * Represents information about a zip entry in a zip file.
  */
 struct ZipEntry {
-  // Compression method: One of kCompressStored or
-  // kCompressDeflated.
+  // Compression method. One of kCompressStored or kCompressDeflated.
+  // See also `gpbf` for deflate subtypes.
   uint16_t method;
 
   // Modification time. The zipfile format specifies
   // that the first two little endian bytes contain the time
   // and the last two little endian bytes contain the date.
-  // See `GetModificationTime`.
+  // See `GetModificationTime`. Use signed integer to avoid the
+  // sub-overflow.
   // TODO: should be overridden by extra time field, if present.
-  uint32_t mod_time;
+  int32_t mod_time;
 
   // Returns `mod_time` as a broken-down struct tm.
   struct tm GetModificationTime() const;
 
   // Suggested Unix mode for this entry, from the zip archive if created on
-  // Unix, or a default otherwise.
+  // Unix, or a default otherwise. See also `external_file_attributes`.
   mode_t unix_mode;
 
   // 1 if this entry contains a data descriptor segment, 0
@@ -102,6 +80,18 @@
 
   // The offset to the start of data for this ZipEntry.
   off64_t offset;
+
+  // The version of zip and the host file system this came from (for zipinfo).
+  uint16_t version_made_by;
+
+  // The raw attributes, whose interpretation depends on the host
+  // file system in `version_made_by` (for zipinfo). See also `unix_mode`.
+  uint32_t external_file_attributes;
+
+  // Specifics about the deflation (for zipinfo).
+  uint16_t gpbf;
+  // Whether this entry is believed to be text or binary (for zipinfo).
+  bool is_text;
 };
 
 struct ZipArchive;
@@ -137,7 +127,10 @@
 int32_t OpenArchiveFd(const int fd, const char* debugFileName, ZipArchiveHandle* handle,
                       bool assume_ownership = true);
 
-int32_t OpenArchiveFromMemory(void* address, size_t length, const char* debugFileName,
+int32_t OpenArchiveFdRange(const int fd, const char* debugFileName, ZipArchiveHandle* handle,
+                           off64_t length, off64_t offset, bool assume_ownership = true);
+
+int32_t OpenArchiveFromMemory(const void* address, size_t length, const char* debugFileName,
                               ZipArchiveHandle* handle);
 /*
  * Close archive, releasing resources associated with it. This will
@@ -148,9 +141,21 @@
  */
 void CloseArchive(ZipArchiveHandle archive);
 
+/** See GetArchiveInfo(). */
+struct ZipArchiveInfo {
+  /** The size in bytes of the archive itself. Used by zipinfo. */
+  off64_t archive_size;
+  /** The number of entries in the archive. */
+  size_t entry_count;
+};
+
+/**
+ * Returns information about the given archive.
+ */
+ZipArchiveInfo GetArchiveInfo(ZipArchiveHandle archive);
+
 /*
- * Find an entry in the Zip archive, by name. |entryName| must be a null
- * terminated string, and |data| must point to a writeable memory location.
+ * Find an entry in the Zip archive, by name. |data| must be non-null.
  *
  * Returns 0 if an entry is found, and populates |data| with information
  * about this entry. Returns negative values otherwise.
@@ -164,7 +169,7 @@
  * On non-Windows platforms this method does not modify internal state and
  * can be called concurrently.
  */
-int32_t FindEntry(const ZipArchiveHandle archive, const ZipString& entryName, ZipEntry* data);
+int32_t FindEntry(const ZipArchiveHandle archive, const std::string_view entryName, ZipEntry* data);
 
 /*
  * Start iterating over all entries of a zip file. The order of iteration
@@ -180,7 +185,8 @@
  * Returns 0 on success and negative values on failure.
  */
 int32_t StartIteration(ZipArchiveHandle archive, void** cookie_ptr,
-                       const ZipString* optional_prefix, const ZipString* optional_suffix);
+                       const std::string_view optional_prefix = "",
+                       const std::string_view optional_suffix = "");
 
 /*
  * Advance to the next element in the zipfile in iteration order.
@@ -188,7 +194,8 @@
  * Returns 0 on success, -1 if there are no more elements in this
  * archive and lower negative values on failure.
  */
-int32_t Next(void* cookie, ZipEntry* data, ZipString* name);
+int32_t Next(void* cookie, ZipEntry* data, std::string* name);
+int32_t Next(void* cookie, ZipEntry* data, std::string_view* name);
 
 /*
  * End iteration over all entries of a zip file and frees the memory allocated
@@ -219,6 +226,12 @@
 
 int GetFileDescriptor(const ZipArchiveHandle archive);
 
+/**
+ * Returns the offset of the zip archive in the backing file descriptor, or 0 if the zip archive is
+ * not backed by a file descriptor.
+ */
+off64_t GetFileDescriptorOffset(const ZipArchiveHandle archive);
+
 const char* ErrorCodeString(int32_t error_code);
 
 #if !defined(_WIN32)
diff --git a/libziparchive/include/ziparchive/zip_writer.h b/libziparchive/include/ziparchive/zip_writer.h
index f6c8427..d68683d 100644
--- a/libziparchive/include/ziparchive/zip_writer.h
+++ b/libziparchive/include/ziparchive/zip_writer.h
@@ -19,8 +19,10 @@
 #include <cstdio>
 #include <ctime>
 
+#include <gtest/gtest_prod.h>
 #include <memory>
 #include <string>
+#include <string_view>
 #include <vector>
 
 #include "android-base/macros.h"
@@ -76,7 +78,7 @@
     uint32_t uncompressed_size;
     uint16_t last_mod_time;
     uint16_t last_mod_date;
-    uint32_t padding_length;
+    uint16_t padding_length;
     off64_t local_file_header_offset;
   };
 
@@ -101,7 +103,7 @@
    * Subsequent calls to WriteBytes(const void*, size_t) will add data to this entry.
    * Returns 0 on success, and an error value < 0 on failure.
    */
-  int32_t StartEntry(const char* path, size_t flags);
+  int32_t StartEntry(std::string_view path, size_t flags);
 
   /**
    * Starts a new zip entry with the given path and flags, where the
@@ -111,17 +113,17 @@
    * Subsequent calls to WriteBytes(const void*, size_t) will add data to this entry.
    * Returns 0 on success, and an error value < 0 on failure.
    */
-  int32_t StartAlignedEntry(const char* path, size_t flags, uint32_t alignment);
+  int32_t StartAlignedEntry(std::string_view path, size_t flags, uint32_t alignment);
 
   /**
    * Same as StartEntry(const char*, size_t), but sets a last modified time for the entry.
    */
-  int32_t StartEntryWithTime(const char* path, size_t flags, time_t time);
+  int32_t StartEntryWithTime(std::string_view path, size_t flags, time_t time);
 
   /**
    * Same as StartAlignedEntry(const char*, size_t), but sets a last modified time for the entry.
    */
-  int32_t StartAlignedEntryWithTime(const char* path, size_t flags, time_t time, uint32_t alignment);
+  int32_t StartAlignedEntryWithTime(std::string_view path, size_t flags, time_t time, uint32_t alignment);
 
   /**
    * Writes bytes to the zip file for the previously started zip entry.
@@ -161,9 +163,10 @@
 
   int32_t HandleError(int32_t error_code);
   int32_t PrepareDeflate();
-  int32_t StoreBytes(FileEntry* file, const void* data, size_t len);
-  int32_t CompressBytes(FileEntry* file, const void* data, size_t len);
+  int32_t StoreBytes(FileEntry* file, const void* data, uint32_t len);
+  int32_t CompressBytes(FileEntry* file, const void* data, uint32_t len);
   int32_t FlushCompressedBytes(FileEntry* file);
+  bool ShouldUseDataDescriptor() const;
 
   enum class State {
     kWritingZip,
@@ -181,4 +184,6 @@
 
   std::unique_ptr<z_stream, void (*)(z_stream*)> z_stream_;
   std::vector<uint8_t> buffer_;
+
+  FRIEND_TEST(zipwriter, WriteToUnseekableFile);
 };
diff --git a/libziparchive/libziparchive_fuzzer.cpp b/libziparchive/libziparchive_fuzzer.cpp
new file mode 100644
index 0000000..75e7939
--- /dev/null
+++ b/libziparchive/libziparchive_fuzzer.cpp
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <ziparchive/zip_archive.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  ZipArchiveHandle handle = nullptr;
+  OpenArchiveFromMemory(data, size, "fuzz", &handle);
+  CloseArchive(handle);
+  return 0;
+}
diff --git a/libziparchive/run-ziptool-tests-on-android.sh b/libziparchive/run-ziptool-tests-on-android.sh
new file mode 100755
index 0000000..3c23d43
--- /dev/null
+++ b/libziparchive/run-ziptool-tests-on-android.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Copy the tests across.
+adb shell rm -rf /data/local/tmp/ziptool-tests/
+adb shell mkdir /data/local/tmp/ziptool-tests/
+adb push cli-tests/ /data/local/tmp/ziptool-tests/
+#adb push cli-test /data/local/tmp/ziptool-tests/
+
+if tty -s; then
+  dash_t="-t"
+else
+  dash_t=""
+fi
+
+exec adb shell $dash_t cli-test /data/local/tmp/ziptool-tests/cli-tests/*.test
diff --git a/libziparchive/testdata/empty.zip b/libziparchive/testdata/empty.zip
new file mode 100644
index 0000000..15cb0ec
--- /dev/null
+++ b/libziparchive/testdata/empty.zip
Binary files differ
diff --git a/libziparchive/testdata/zero-size-cd.zip b/libziparchive/testdata/zero-size-cd.zip
new file mode 100644
index 0000000..b6c8cbe
--- /dev/null
+++ b/libziparchive/testdata/zero-size-cd.zip
Binary files differ
diff --git a/libziparchive/unzip.cpp b/libziparchive/unzip.cpp
deleted file mode 100644
index 6756007..0000000
--- a/libziparchive/unzip.cpp
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <error.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <set>
-#include <string>
-
-#include <android-base/file.h>
-#include <android-base/strings.h>
-#include <ziparchive/zip_archive.h>
-
-enum OverwriteMode {
-  kAlways,
-  kNever,
-  kPrompt,
-};
-
-static OverwriteMode overwrite_mode = kPrompt;
-static const char* flag_d = nullptr;
-static bool flag_l = false;
-static bool flag_p = false;
-static bool flag_q = false;
-static bool flag_v = false;
-static const char* archive_name = nullptr;
-static std::set<std::string> includes;
-static std::set<std::string> excludes;
-static uint64_t total_uncompressed_length = 0;
-static uint64_t total_compressed_length = 0;
-static size_t file_count = 0;
-
-static bool Filter(const std::string& name) {
-  if (!excludes.empty() && excludes.find(name) != excludes.end()) return true;
-  if (!includes.empty() && includes.find(name) == includes.end()) return true;
-  return false;
-}
-
-static bool MakeDirectoryHierarchy(const std::string& path) {
-  // stat rather than lstat because a symbolic link to a directory is fine too.
-  struct stat sb;
-  if (stat(path.c_str(), &sb) != -1 && S_ISDIR(sb.st_mode)) return true;
-
-  // Ensure the parent directories exist first.
-  if (!MakeDirectoryHierarchy(android::base::Dirname(path))) return false;
-
-  // Then try to create this directory.
-  return (mkdir(path.c_str(), 0777) != -1);
-}
-
-static int CompressionRatio(int64_t uncompressed, int64_t compressed) {
-  if (uncompressed == 0) return 0;
-  return (100LL * (uncompressed - compressed)) / uncompressed;
-}
-
-static void MaybeShowHeader() {
-  if (!flag_q) printf("Archive:  %s\n", archive_name);
-  if (flag_v) {
-    printf(
-        " Length   Method    Size  Cmpr    Date    Time   CRC-32   Name\n"
-        "--------  ------  ------- ---- ---------- ----- --------  ----\n");
-  } else if (flag_l) {
-    printf(
-        "  Length      Date    Time    Name\n"
-        "---------  ---------- -----   ----\n");
-  }
-}
-
-static void MaybeShowFooter() {
-  if (flag_v) {
-    printf(
-        "--------          -------  ---                            -------\n"
-        "%8" PRId64 "         %8" PRId64 " %3d%%                            %zu file%s\n",
-        total_uncompressed_length, total_compressed_length,
-        CompressionRatio(total_uncompressed_length, total_compressed_length), file_count,
-        (file_count == 1) ? "" : "s");
-  } else if (flag_l) {
-    printf(
-        "---------                     -------\n"
-        "%9" PRId64 "                     %zu file%s\n",
-        total_uncompressed_length, file_count, (file_count == 1) ? "" : "s");
-  }
-}
-
-static bool PromptOverwrite(const std::string& dst) {
-  // TODO: [r]ename not implemented because it doesn't seem useful.
-  printf("replace %s? [y]es, [n]o, [A]ll, [N]one: ", dst.c_str());
-  fflush(stdout);
-  while (true) {
-    char* line = nullptr;
-    size_t n;
-    if (getline(&line, &n, stdin) == -1) {
-      error(1, 0, "(EOF/read error; assuming [N]one...)");
-      overwrite_mode = kNever;
-      return false;
-    }
-    if (n == 0) continue;
-    char cmd = line[0];
-    free(line);
-    switch (cmd) {
-      case 'y':
-        return true;
-      case 'n':
-        return false;
-      case 'A':
-        overwrite_mode = kAlways;
-        return true;
-      case 'N':
-        overwrite_mode = kNever;
-        return false;
-    }
-  }
-}
-
-static void ExtractToPipe(ZipArchiveHandle zah, ZipEntry& entry, const std::string& name) {
-  // We need to extract to memory because ExtractEntryToFile insists on
-  // being able to seek and truncate, and you can't do that with stdout.
-  uint8_t* buffer = new uint8_t[entry.uncompressed_length];
-  int err = ExtractToMemory(zah, &entry, buffer, entry.uncompressed_length);
-  if (err < 0) {
-    error(1, 0, "failed to extract %s: %s", name.c_str(), ErrorCodeString(err));
-  }
-  if (!android::base::WriteFully(1, buffer, entry.uncompressed_length)) {
-    error(1, errno, "failed to write %s to stdout", name.c_str());
-  }
-  delete[] buffer;
-}
-
-static void ExtractOne(ZipArchiveHandle zah, ZipEntry& entry, const std::string& name) {
-  // Bad filename?
-  if (android::base::StartsWith(name, "/") || android::base::StartsWith(name, "../") ||
-      name.find("/../") != std::string::npos) {
-    error(1, 0, "bad filename %s", name.c_str());
-  }
-
-  // Where are we actually extracting to (for human-readable output)?
-  std::string dst;
-  if (flag_d) {
-    dst = flag_d;
-    if (!android::base::EndsWith(dst, "/")) dst += '/';
-  }
-  dst += name;
-
-  // Ensure the directory hierarchy exists.
-  if (!MakeDirectoryHierarchy(android::base::Dirname(name))) {
-    error(1, errno, "couldn't create directory hierarchy for %s", dst.c_str());
-  }
-
-  // An entry in a zip file can just be a directory itself.
-  if (android::base::EndsWith(name, "/")) {
-    if (mkdir(name.c_str(), entry.unix_mode) == -1) {
-      // If the directory already exists, that's fine.
-      if (errno == EEXIST) {
-        struct stat sb;
-        if (stat(name.c_str(), &sb) != -1 && S_ISDIR(sb.st_mode)) return;
-      }
-      error(1, errno, "couldn't extract directory %s", dst.c_str());
-    }
-    return;
-  }
-
-  // Create the file.
-  int fd = open(name.c_str(), O_CREAT | O_WRONLY | O_CLOEXEC | O_EXCL, entry.unix_mode);
-  if (fd == -1 && errno == EEXIST) {
-    if (overwrite_mode == kNever) return;
-    if (overwrite_mode == kPrompt && !PromptOverwrite(dst)) return;
-    // Either overwrite_mode is kAlways or the user consented to this specific case.
-    fd = open(name.c_str(), O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, entry.unix_mode);
-  }
-  if (fd == -1) error(1, errno, "couldn't create file %s", dst.c_str());
-
-  // Actually extract into the file.
-  if (!flag_q) printf("  inflating: %s\n", dst.c_str());
-  int err = ExtractEntryToFile(zah, &entry, fd);
-  if (err < 0) error(1, 0, "failed to extract %s: %s", dst.c_str(), ErrorCodeString(err));
-  close(fd);
-}
-
-static void ListOne(const ZipEntry& entry, const std::string& name) {
-  tm t = entry.GetModificationTime();
-  char time[32];
-  snprintf(time, sizeof(time), "%04d-%02d-%02d %02d:%02d", t.tm_year + 1900, t.tm_mon + 1,
-           t.tm_mday, t.tm_hour, t.tm_min);
-  if (flag_v) {
-    printf("%8d  %s  %7d %3d%% %s %08x  %s\n", entry.uncompressed_length,
-           (entry.method == kCompressStored) ? "Stored" : "Defl:N", entry.compressed_length,
-           CompressionRatio(entry.uncompressed_length, entry.compressed_length), time, entry.crc32,
-           name.c_str());
-  } else {
-    printf("%9d  %s   %s\n", entry.uncompressed_length, time, name.c_str());
-  }
-}
-
-static void ProcessOne(ZipArchiveHandle zah, ZipEntry& entry, const std::string& name) {
-  if (flag_l || flag_v) {
-    // -l or -lv or -lq or -v.
-    ListOne(entry, name);
-  } else {
-    // Actually extract.
-    if (flag_p) {
-      ExtractToPipe(zah, entry, name);
-    } else {
-      ExtractOne(zah, entry, name);
-    }
-  }
-  total_uncompressed_length += entry.uncompressed_length;
-  total_compressed_length += entry.compressed_length;
-  ++file_count;
-}
-
-static void ProcessAll(ZipArchiveHandle zah) {
-  MaybeShowHeader();
-
-  // libziparchive iteration order doesn't match the central directory.
-  // We could sort, but that would cost extra and wouldn't match either.
-  void* cookie;
-  int err = StartIteration(zah, &cookie, nullptr, nullptr);
-  if (err != 0) {
-    error(1, 0, "couldn't iterate %s: %s", archive_name, ErrorCodeString(err));
-  }
-
-  ZipEntry entry;
-  ZipString string;
-  while ((err = Next(cookie, &entry, &string)) >= 0) {
-    std::string name(string.name, string.name + string.name_length);
-    if (!Filter(name)) ProcessOne(zah, entry, name);
-  }
-
-  if (err < -1) error(1, 0, "failed iterating %s: %s", archive_name, ErrorCodeString(err));
-  EndIteration(cookie);
-
-  MaybeShowFooter();
-}
-
-static void ShowHelp(bool full) {
-  fprintf(full ? stdout : stderr, "usage: unzip [-d DIR] [-lnopqv] ZIP [FILE...] [-x FILE...]\n");
-  if (!full) exit(EXIT_FAILURE);
-
-  printf(
-      "\n"
-      "Extract FILEs from ZIP archive. Default is all files.\n"
-      "\n"
-      "-d DIR	Extract into DIR\n"
-      "-l	List contents (-lq excludes archive name, -lv is verbose)\n"
-      "-n	Never overwrite files (default: prompt)\n"
-      "-o	Always overwrite files\n"
-      "-p	Pipe to stdout\n"
-      "-q	Quiet\n"
-      "-v	List contents verbosely\n"
-      "-x FILE	Exclude files\n");
-  exit(EXIT_SUCCESS);
-}
-
-int main(int argc, char* argv[]) {
-  static struct option opts[] = {
-      {"help", no_argument, 0, 'h'},
-  };
-  bool saw_x = false;
-  int opt;
-  while ((opt = getopt_long(argc, argv, "-d:hlnopqvx", opts, nullptr)) != -1) {
-    switch (opt) {
-      case 'd':
-        flag_d = optarg;
-        break;
-      case 'h':
-        ShowHelp(true);
-        break;
-      case 'l':
-        flag_l = true;
-        break;
-      case 'n':
-        overwrite_mode = kNever;
-        break;
-      case 'o':
-        overwrite_mode = kAlways;
-        break;
-      case 'p':
-        flag_p = flag_q = true;
-        break;
-      case 'q':
-        flag_q = true;
-        break;
-      case 'v':
-        flag_v = true;
-        break;
-      case 'x':
-        saw_x = true;
-        break;
-      case 1:
-        // -x swallows all following arguments, so we use '-' in the getopt
-        // string and collect files here.
-        if (!archive_name) {
-          archive_name = optarg;
-        } else if (saw_x) {
-          excludes.insert(optarg);
-        } else {
-          includes.insert(optarg);
-        }
-        break;
-      default:
-        ShowHelp(false);
-    }
-  }
-
-  if (!archive_name) error(1, 0, "missing archive filename");
-
-  // We can't support "-" to unzip from stdin because libziparchive relies on mmap.
-  ZipArchiveHandle zah;
-  int32_t err;
-  if ((err = OpenArchive(archive_name, &zah)) != 0) {
-    error(1, 0, "couldn't open %s: %s", archive_name, ErrorCodeString(err));
-  }
-
-  // Implement -d by changing into that directory.
-  // We'll create implicit directories based on paths in the zip file, but we
-  // require that the -d directory already exists.
-  if (flag_d && chdir(flag_d) == -1) error(1, errno, "couldn't chdir to %s", flag_d);
-
-  ProcessAll(zah);
-
-  CloseArchive(zah);
-  return 0;
-}
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index 0710d0a..489fcb1 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -47,6 +47,7 @@
 #include <android-base/macros.h>  // TEMP_FAILURE_RETRY may or may not be in unistd
 #include <android-base/mapped_file.h>
 #include <android-base/memory.h>
+#include <android-base/strings.h>
 #include <android-base/utf8.h>
 #include <log/log.h>
 #include "zlib.h"
@@ -59,7 +60,7 @@
 
 // Used to turn on crc checks - verify that the content CRC matches the values
 // specified in the local file header and the central directory.
-static const bool kCrcChecksEnabled = false;
+static constexpr bool kCrcChecksEnabled = false;
 
 // The maximum number of bytes to scan backwards for the EOCD start.
 static const uint32_t kMaxEOCDSearch = kMaxCommentLen + sizeof(EocdRecord);
@@ -101,38 +102,8 @@
   return val;
 }
 
-static uint32_t ComputeHash(const ZipString& name) {
-#if !defined(_WIN32)
-  return std::hash<std::string_view>{}(
-      std::string_view(reinterpret_cast<const char*>(name.name), name.name_length));
-#else
-  // Remove this code path once the windows compiler knows how to compile the above statement.
-  uint32_t hash = 0;
-  uint16_t len = name.name_length;
-  const uint8_t* str = name.name;
-
-  while (len--) {
-    hash = hash * 31 + *str++;
-  }
-
-  return hash;
-#endif
-}
-
-static bool isZipStringEqual(const uint8_t* start, const ZipString& zip_string,
-                             const ZipStringOffset& zip_string_offset) {
-  const ZipString from_offset = zip_string_offset.GetZipString(start);
-  return from_offset == zip_string;
-}
-
-/**
- * Returns offset of ZipString#name from the start of the central directory in the memory map.
- * For valid ZipStrings contained in the zip archive mmap, 0 < offset < 0xffffff.
- */
-static inline uint32_t GetOffset(const uint8_t* name, const uint8_t* start) {
-  CHECK_GT(name, start);
-  CHECK_LT(name, start + 0xffffff);
-  return static_cast<uint32_t>(name - start);
+static uint32_t ComputeHash(std::string_view name) {
+  return static_cast<uint32_t>(std::hash<std::string_view>{}(name));
 }
 
 /*
@@ -140,27 +111,27 @@
  * valid range.
  */
 static int64_t EntryToIndex(const ZipStringOffset* hash_table, const uint32_t hash_table_size,
-                            const ZipString& name, const uint8_t* start) {
+                            std::string_view name, const uint8_t* start) {
   const uint32_t hash = ComputeHash(name);
 
   // NOTE: (hash_table_size - 1) is guaranteed to be non-negative.
   uint32_t ent = hash & (hash_table_size - 1);
   while (hash_table[ent].name_offset != 0) {
-    if (isZipStringEqual(start, name, hash_table[ent])) {
+    if (hash_table[ent].ToStringView(start) == name) {
       return ent;
     }
     ent = (ent + 1) & (hash_table_size - 1);
   }
 
-  ALOGV("Zip: Unable to find entry %.*s", name.name_length, name.name);
+  ALOGV("Zip: Unable to find entry %.*s", static_cast<int>(name.size()), name.data());
   return kEntryNotFound;
 }
 
 /*
  * Add a new entry to the hash table.
  */
-static int32_t AddToHash(ZipStringOffset* hash_table, const uint64_t hash_table_size,
-                         const ZipString& name, const uint8_t* start) {
+static int32_t AddToHash(ZipStringOffset* hash_table, const uint32_t hash_table_size,
+                         std::string_view name, const uint8_t* start) {
   const uint64_t hash = ComputeHash(name);
   uint32_t ent = hash & (hash_table_size - 1);
 
@@ -169,15 +140,18 @@
    * Further, we guarantee that the hashtable size is not 0.
    */
   while (hash_table[ent].name_offset != 0) {
-    if (isZipStringEqual(start, name, hash_table[ent])) {
-      // We've found a duplicate entry. We don't accept it
-      ALOGW("Zip: Found duplicate entry %.*s", name.name_length, name.name);
+    if (hash_table[ent].ToStringView(start) == name) {
+      // We've found a duplicate entry. We don't accept duplicates.
+      ALOGW("Zip: Found duplicate entry %.*s", static_cast<int>(name.size()), name.data());
       return kDuplicateEntry;
     }
     ent = (ent + 1) & (hash_table_size - 1);
   }
-  hash_table[ent].name_offset = GetOffset(name.name, start);
-  hash_table[ent].name_length = name.name_length;
+
+  // `name` has already been validated before entry.
+  const char* start_char = reinterpret_cast<const char*>(start);
+  hash_table[ent].name_offset = static_cast<uint32_t>(name.data() - start_char);
+  hash_table[ent].name_length = static_cast<uint16_t>(name.size());
   return 0;
 }
 
@@ -188,8 +162,8 @@
 }
 #endif
 
-ZipArchive::ZipArchive(const int fd, bool assume_ownership)
-    : mapped_zip(fd),
+ZipArchive::ZipArchive(MappedZipFile&& map, bool assume_ownership)
+    : mapped_zip(map),
       close_file(assume_ownership),
       directory_offset(0),
       central_directory(),
@@ -199,12 +173,13 @@
       hash_table(nullptr) {
 #if defined(__BIONIC__)
   if (assume_ownership) {
-    android_fdsan_exchange_owner_tag(fd, 0, GetOwnerTag(this));
+    CHECK(mapped_zip.HasFd());
+    android_fdsan_exchange_owner_tag(mapped_zip.GetFileDescriptor(), 0, GetOwnerTag(this));
   }
 #endif
 }
 
-ZipArchive::ZipArchive(void* address, size_t length)
+ZipArchive::ZipArchive(const void* address, size_t length)
     : mapped_zip(address, length),
       close_file(false),
       directory_offset(0),
@@ -227,7 +202,7 @@
 }
 
 static int32_t MapCentralDirectory0(const char* debug_file_name, ZipArchive* archive,
-                                    off64_t file_length, off64_t read_amount,
+                                    off64_t file_length, uint32_t read_amount,
                                     uint8_t* scan_buffer) {
   const off64_t search_start = file_length - read_amount;
 
@@ -243,7 +218,8 @@
    * doing an initial minimal read; if we don't find it, retry with a
    * second read as above.)
    */
-  int i = read_amount - sizeof(EocdRecord);
+  CHECK_LE(read_amount, std::numeric_limits<int32_t>::max());
+  int32_t i = read_amount - sizeof(EocdRecord);
   for (; i >= 0; i--) {
     if (scan_buffer[i] == 0x50) {
       uint32_t* sig_addr = reinterpret_cast<uint32_t*>(&scan_buffer[i]);
@@ -290,14 +266,10 @@
   ALOGV("+++ num_entries=%" PRIu32 " dir_size=%" PRIu32 " dir_offset=%" PRIu32, eocd->num_records,
         eocd->cd_size, eocd->cd_start_offset);
 
-  /*
-   * It all looks good.  Create a mapping for the CD, and set the fields
-   * in archive.
-   */
-
+  // It all looks good.  Create a mapping for the CD, and set the fields
+  // in archive.
   if (!archive->InitializeCentralDirectory(static_cast<off64_t>(eocd->cd_start_offset),
                                            static_cast<size_t>(eocd->cd_size))) {
-    ALOGE("Zip: failed to intialize central directory.\n");
     return kMmapFailed;
   }
 
@@ -346,9 +318,9 @@
    *
    * We start by pulling in the last part of the file.
    */
-  off64_t read_amount = kMaxEOCDSearch;
+  uint32_t read_amount = kMaxEOCDSearch;
   if (file_length < read_amount) {
-    read_amount = file_length;
+    read_amount = static_cast<uint32_t>(file_length);
   }
 
   std::vector<uint8_t> scan_buffer(read_amount);
@@ -378,8 +350,8 @@
       reinterpret_cast<ZipStringOffset*>(calloc(archive->hash_table_size, sizeof(ZipStringOffset)));
   if (archive->hash_table == nullptr) {
     ALOGW("Zip: unable to allocate the %u-entry hash_table, entry size: %zu",
-          archive->hash_table_size, sizeof(ZipString));
-    return -1;
+          archive->hash_table_size, sizeof(ZipStringOffset));
+    return kAllocationFailed;
   }
 
   /*
@@ -390,24 +362,25 @@
   const uint8_t* ptr = cd_ptr;
   for (uint16_t i = 0; i < num_entries; i++) {
     if (ptr > cd_end - sizeof(CentralDirectoryRecord)) {
-      ALOGW("Zip: ran off the end (at %" PRIu16 ")", i);
+      ALOGW("Zip: ran off the end (item #%" PRIu16 ", %zu bytes of central directory)", i,
+            cd_length);
 #if defined(__ANDROID__)
       android_errorWriteLog(0x534e4554, "36392138");
 #endif
-      return -1;
+      return kInvalidFile;
     }
 
     const CentralDirectoryRecord* cdr = reinterpret_cast<const CentralDirectoryRecord*>(ptr);
     if (cdr->record_signature != CentralDirectoryRecord::kSignature) {
       ALOGW("Zip: missed a central dir sig (at %" PRIu16 ")", i);
-      return -1;
+      return kInvalidFile;
     }
 
     const off64_t local_header_offset = cdr->local_file_header_offset;
     if (local_header_offset >= archive->directory_offset) {
       ALOGW("Zip: bad LFH offset %" PRId64 " at entry %" PRIu16,
             static_cast<int64_t>(local_header_offset), i);
-      return -1;
+      return kInvalidFile;
     }
 
     const uint16_t file_name_length = cdr->file_name_length;
@@ -416,21 +389,19 @@
     const uint8_t* file_name = ptr + sizeof(CentralDirectoryRecord);
 
     if (file_name + file_name_length > cd_end) {
-      ALOGW(
-          "Zip: file name boundary exceeds the central directory range, file_name_length: "
-          "%" PRIx16 ", cd_length: %zu",
-          file_name_length, cd_length);
-      return -1;
+      ALOGW("Zip: file name for entry %" PRIu16
+            " exceeds the central directory range, file_name_length: %" PRIu16 ", cd_length: %zu",
+            i, file_name_length, cd_length);
+      return kInvalidEntryName;
     }
-    /* check that file name is valid UTF-8 and doesn't contain NUL (U+0000) characters */
+    // Check that file name is valid UTF-8 and doesn't contain NUL (U+0000) characters.
     if (!IsValidEntryName(file_name, file_name_length)) {
-      return -1;
+      ALOGW("Zip: invalid file name at entry %" PRIu16, i);
+      return kInvalidEntryName;
     }
 
-    /* add the CDE filename to the hash table */
-    ZipString entry_name;
-    entry_name.name = file_name;
-    entry_name.name_length = file_name_length;
+    // Add the CDE filename to the hash table.
+    std::string_view entry_name{reinterpret_cast<const char*>(file_name), file_name_length};
     const int add_result = AddToHash(archive->hash_table, archive->hash_table_size, entry_name,
                                      archive->central_directory.GetBasePtr());
     if (add_result != 0) {
@@ -441,7 +412,7 @@
     ptr += sizeof(CentralDirectoryRecord) + file_name_length + extra_length + comment_length;
     if ((ptr - cd_ptr) > static_cast<int64_t>(cd_length)) {
       ALOGW("Zip: bad CD advance (%tu vs %zu) at entry %" PRIu16, ptr - cd_ptr, cd_length, i);
-      return -1;
+      return kInvalidFile;
     }
   }
 
@@ -449,7 +420,7 @@
   if (!archive->mapped_zip.ReadAtOffset(reinterpret_cast<uint8_t*>(&lfh_start_bytes),
                                         sizeof(uint32_t), 0)) {
     ALOGW("Zip: Unable to read header for entry at offset == 0.");
-    return -1;
+    return kInvalidFile;
   }
 
   if (lfh_start_bytes != LocalFileHeader::kSignature) {
@@ -457,7 +428,7 @@
 #if defined(__ANDROID__)
     android_errorWriteLog(0x534e4554, "64211847");
 #endif
-    return -1;
+    return kInvalidFile;
   }
 
   ALOGV("+++ zip good scan %" PRIu16 " entries", num_entries);
@@ -466,28 +437,38 @@
 }
 
 static int32_t OpenArchiveInternal(ZipArchive* archive, const char* debug_file_name) {
-  int32_t result = -1;
-  if ((result = MapCentralDirectory(debug_file_name, archive)) != 0) {
-    return result;
-  }
-
-  if ((result = ParseZipArchive(archive))) {
-    return result;
-  }
-
-  return 0;
+  int32_t result = MapCentralDirectory(debug_file_name, archive);
+  return result != 0 ? result : ParseZipArchive(archive);
 }
 
 int32_t OpenArchiveFd(int fd, const char* debug_file_name, ZipArchiveHandle* handle,
                       bool assume_ownership) {
-  ZipArchive* archive = new ZipArchive(fd, assume_ownership);
+  ZipArchive* archive = new ZipArchive(MappedZipFile(fd), assume_ownership);
   *handle = archive;
   return OpenArchiveInternal(archive, debug_file_name);
 }
 
+int32_t OpenArchiveFdRange(int fd, const char* debug_file_name, ZipArchiveHandle* handle,
+                           off64_t length, off64_t offset, bool assume_ownership) {
+  ZipArchive* archive = new ZipArchive(MappedZipFile(fd, length, offset), assume_ownership);
+  *handle = archive;
+
+  if (length < 0) {
+    ALOGW("Invalid zip length %" PRId64, length);
+    return kIoError;
+  }
+
+  if (offset < 0) {
+    ALOGW("Invalid zip offset %" PRId64, offset);
+    return kIoError;
+  }
+
+  return OpenArchiveInternal(archive, debug_file_name);
+}
+
 int32_t OpenArchive(const char* fileName, ZipArchiveHandle* handle) {
   const int fd = ::android::base::utf8::open(fileName, O_RDONLY | O_BINARY | O_CLOEXEC, 0);
-  ZipArchive* archive = new ZipArchive(fd, true);
+  ZipArchive* archive = new ZipArchive(MappedZipFile(fd), true);
   *handle = archive;
 
   if (fd < 0) {
@@ -498,13 +479,20 @@
   return OpenArchiveInternal(archive, fileName);
 }
 
-int32_t OpenArchiveFromMemory(void* address, size_t length, const char* debug_file_name,
+int32_t OpenArchiveFromMemory(const void* address, size_t length, const char* debug_file_name,
                               ZipArchiveHandle* handle) {
   ZipArchive* archive = new ZipArchive(address, length);
   *handle = archive;
   return OpenArchiveInternal(archive, debug_file_name);
 }
 
+ZipArchiveInfo GetArchiveInfo(ZipArchiveHandle archive) {
+  ZipArchiveInfo result;
+  result.archive_size = archive->mapped_zip.GetFileLength();
+  result.entry_count = archive->num_entries;
+  return result;
+}
+
 /*
  * Close a ZipArchive, closing the file and freeing the contents.
  */
@@ -545,21 +533,19 @@
   return 0;
 }
 
-static int32_t FindEntry(const ZipArchive* archive, const int ent, ZipEntry* data) {
+static int32_t FindEntry(const ZipArchive* archive, const int32_t ent, ZipEntry* data) {
   const uint16_t nameLen = archive->hash_table[ent].name_length;
 
   // Recover the start of the central directory entry from the filename
   // pointer.  The filename is the first entry past the fixed-size data,
   // so we can just subtract back from that.
-  const ZipString from_offset =
-      archive->hash_table[ent].GetZipString(archive->central_directory.GetBasePtr());
-  const uint8_t* ptr = from_offset.name;
+  const uint8_t* base_ptr = archive->central_directory.GetBasePtr();
+  const uint8_t* ptr = base_ptr + archive->hash_table[ent].name_offset;
   ptr -= sizeof(CentralDirectoryRecord);
 
   // This is the base of our mmapped region, we have to sanity check that
   // the name that's in the hash table is a pointer to a location within
   // this mapped region.
-  const uint8_t* base_ptr = archive->central_directory.GetBasePtr();
   if (ptr < base_ptr || ptr > base_ptr + archive->central_directory.GetMapLength()) {
     ALOGW("Zip: Invalid entry pointer");
     return kInvalidOffset;
@@ -643,34 +629,41 @@
   }
 
   // 4.4.2.1: the upper byte of `version_made_by` gives the source OS. Unix is 3.
-  if ((cdr->version_made_by >> 8) == 3) {
+  data->version_made_by = cdr->version_made_by;
+  data->external_file_attributes = cdr->external_file_attributes;
+  if ((data->version_made_by >> 8) == 3) {
     data->unix_mode = (cdr->external_file_attributes >> 16) & 0xffff;
   } else {
     data->unix_mode = 0777;
   }
 
+  // 4.4.4: general purpose bit flags.
+  data->gpbf = lfh->gpb_flags;
+
+  // 4.4.14: the lowest bit of the internal file attributes field indicates text.
+  // Currently only needed to implement zipinfo.
+  data->is_text = (cdr->internal_file_attributes & 1);
+
   // Check that the local file header name matches the declared
   // name in the central directory.
-  if (lfh->file_name_length == nameLen) {
-    const off64_t name_offset = local_header_offset + sizeof(LocalFileHeader);
-    if (name_offset + lfh->file_name_length > cd_offset) {
-      ALOGW("Zip: Invalid declared length");
-      return kInvalidOffset;
-    }
-
-    std::vector<uint8_t> name_buf(nameLen);
-    if (!archive->mapped_zip.ReadAtOffset(name_buf.data(), nameLen, name_offset)) {
-      ALOGW("Zip: failed reading lfh name from offset %" PRId64, static_cast<int64_t>(name_offset));
-      return kIoError;
-    }
-    const ZipString from_offset =
-        archive->hash_table[ent].GetZipString(archive->central_directory.GetBasePtr());
-    if (memcmp(from_offset.name, name_buf.data(), nameLen)) {
-      return kInconsistentInformation;
-    }
-
-  } else {
-    ALOGW("Zip: lfh name did not match central directory.");
+  if (lfh->file_name_length != nameLen) {
+    ALOGW("Zip: lfh name length did not match central directory");
+    return kInconsistentInformation;
+  }
+  const off64_t name_offset = local_header_offset + sizeof(LocalFileHeader);
+  if (name_offset + lfh->file_name_length > cd_offset) {
+    ALOGW("Zip: lfh name has invalid declared length");
+    return kInvalidOffset;
+  }
+  std::vector<uint8_t> name_buf(nameLen);
+  if (!archive->mapped_zip.ReadAtOffset(name_buf.data(), nameLen, name_offset)) {
+    ALOGW("Zip: failed reading lfh name from offset %" PRId64, static_cast<int64_t>(name_offset));
+    return kIoError;
+  }
+  const std::string_view entry_name =
+      archive->hash_table[ent].ToStringView(archive->central_directory.GetBasePtr());
+  if (memcmp(entry_name.data(), name_buf.data(), nameLen) != 0) {
+    ALOGW("Zip: lfh name did not match central directory");
     return kInconsistentInformation;
   }
 
@@ -701,52 +694,32 @@
 }
 
 struct IterationHandle {
-  uint32_t position;
-  // We're not using vector here because this code is used in the Windows SDK
-  // where the STL is not available.
-  ZipString prefix;
-  ZipString suffix;
   ZipArchive* archive;
 
-  IterationHandle(const ZipString* in_prefix, const ZipString* in_suffix) {
-    if (in_prefix) {
-      uint8_t* name_copy = new uint8_t[in_prefix->name_length];
-      memcpy(name_copy, in_prefix->name, in_prefix->name_length);
-      prefix.name = name_copy;
-      prefix.name_length = in_prefix->name_length;
-    } else {
-      prefix.name = NULL;
-      prefix.name_length = 0;
-    }
-    if (in_suffix) {
-      uint8_t* name_copy = new uint8_t[in_suffix->name_length];
-      memcpy(name_copy, in_suffix->name, in_suffix->name_length);
-      suffix.name = name_copy;
-      suffix.name_length = in_suffix->name_length;
-    } else {
-      suffix.name = NULL;
-      suffix.name_length = 0;
-    }
-  }
+  std::string prefix;
+  std::string suffix;
 
-  ~IterationHandle() {
-    delete[] prefix.name;
-    delete[] suffix.name;
-  }
+  uint32_t position = 0;
+
+  IterationHandle(ZipArchive* archive, std::string_view in_prefix, std::string_view in_suffix)
+      : archive(archive), prefix(in_prefix), suffix(in_suffix) {}
 };
 
 int32_t StartIteration(ZipArchiveHandle archive, void** cookie_ptr,
-                       const ZipString* optional_prefix, const ZipString* optional_suffix) {
+                       const std::string_view optional_prefix,
+                       const std::string_view optional_suffix) {
   if (archive == NULL || archive->hash_table == NULL) {
     ALOGW("Zip: Invalid ZipArchiveHandle");
     return kInvalidHandle;
   }
 
-  IterationHandle* cookie = new IterationHandle(optional_prefix, optional_suffix);
-  cookie->position = 0;
-  cookie->archive = archive;
+  if (optional_prefix.size() > static_cast<size_t>(UINT16_MAX) ||
+      optional_suffix.size() > static_cast<size_t>(UINT16_MAX)) {
+    ALOGW("Zip: prefix/suffix too long");
+    return kInvalidEntryName;
+  }
 
-  *cookie_ptr = cookie;
+  *cookie_ptr = new IterationHandle(archive, optional_prefix, optional_suffix);
   return 0;
 }
 
@@ -754,22 +727,33 @@
   delete reinterpret_cast<IterationHandle*>(cookie);
 }
 
-int32_t FindEntry(const ZipArchiveHandle archive, const ZipString& entryName, ZipEntry* data) {
-  if (entryName.name_length == 0) {
-    ALOGW("Zip: Invalid filename %.*s", entryName.name_length, entryName.name);
+int32_t FindEntry(const ZipArchiveHandle archive, const std::string_view entryName,
+                  ZipEntry* data) {
+  if (entryName.empty() || entryName.size() > static_cast<size_t>(UINT16_MAX)) {
+    ALOGW("Zip: Invalid filename of length %zu", entryName.size());
     return kInvalidEntryName;
   }
 
   const int64_t ent = EntryToIndex(archive->hash_table, archive->hash_table_size, entryName,
                                    archive->central_directory.GetBasePtr());
   if (ent < 0) {
-    ALOGV("Zip: Could not find entry %.*s", entryName.name_length, entryName.name);
-    return ent;
+    ALOGV("Zip: Could not find entry %.*s", static_cast<int>(entryName.size()), entryName.data());
+    return static_cast<int32_t>(ent);  // kEntryNotFound is safe to truncate.
   }
-  return FindEntry(archive, ent, data);
+  // We know there are at most hash_table_size entries, safe to truncate.
+  return FindEntry(archive, static_cast<uint32_t>(ent), data);
 }
 
-int32_t Next(void* cookie, ZipEntry* data, ZipString* name) {
+int32_t Next(void* cookie, ZipEntry* data, std::string* name) {
+  std::string_view sv;
+  int32_t result = Next(cookie, data, &sv);
+  if (result == 0 && name) {
+    *name = std::string(sv);
+  }
+  return result;
+}
+
+int32_t Next(void* cookie, ZipEntry* data, std::string_view* name) {
   IterationHandle* handle = reinterpret_cast<IterationHandle*>(cookie);
   if (handle == NULL) {
     ALOGW("Zip: Null ZipArchiveHandle");
@@ -786,16 +770,14 @@
   const uint32_t hash_table_length = archive->hash_table_size;
   const ZipStringOffset* hash_table = archive->hash_table;
   for (uint32_t i = currentOffset; i < hash_table_length; ++i) {
-    const ZipString from_offset =
-        hash_table[i].GetZipString(archive->central_directory.GetBasePtr());
-    if (hash_table[i].name_offset != 0 &&
-        (handle->prefix.name_length == 0 || from_offset.StartsWith(handle->prefix)) &&
-        (handle->suffix.name_length == 0 || from_offset.EndsWith(handle->suffix))) {
+    const std::string_view entry_name =
+        hash_table[i].ToStringView(archive->central_directory.GetBasePtr());
+    if (hash_table[i].name_offset != 0 && (android::base::StartsWith(entry_name, handle->prefix) &&
+                                           android::base::EndsWith(entry_name, handle->suffix))) {
       handle->position = (i + 1);
       const int error = FindEntry(archive, i, data);
-      if (!error) {
-        name->name = from_offset.name;
-        name->name_length = hash_table[i].name_length;
+      if (!error && name) {
+        *name = entry_name;
       }
       return error;
     }
@@ -849,7 +831,6 @@
       return FileWriter{};
     }
 
-    int result = 0;
 #if defined(__linux__)
     if (declared_length > 0) {
       // Make sure we have enough space on the volume to extract the compressed
@@ -861,7 +842,7 @@
       // EOPNOTSUPP error when issued in other filesystems.
       // Hence, check for the return error code before concluding that the
       // disk does not have enough space.
-      result = TEMP_FAILURE_RETRY(fallocate(fd, 0, current_offset, declared_length));
+      long result = TEMP_FAILURE_RETRY(fallocate(fd, 0, current_offset, declared_length));
       if (result == -1 && errno == ENOSPC) {
         ALOGW("Zip: unable to allocate %" PRId64 " bytes at offset %" PRId64 ": %s",
               static_cast<int64_t>(declared_length), static_cast<int64_t>(current_offset),
@@ -879,7 +860,7 @@
 
     // Block device doesn't support ftruncate(2).
     if (!S_ISBLK(sb.st_mode)) {
-      result = TEMP_FAILURE_RETRY(ftruncate(fd, declared_length + current_offset));
+      long result = TEMP_FAILURE_RETRY(ftruncate(fd, declared_length + current_offset));
       if (result == -1) {
         ALOGW("Zip: unable to truncate file to %" PRId64 ": %s",
               static_cast<int64_t>(declared_length + current_offset), strerror(errno));
@@ -998,16 +979,16 @@
   std::unique_ptr<z_stream, decltype(zstream_deleter)> zstream_guard(&zstream, zstream_deleter);
 
   const bool compute_crc = (crc_out != nullptr);
-  uint64_t crc = 0;
+  uLong crc = 0;
   uint32_t remaining_bytes = compressed_length;
   do {
     /* read as much as we can */
     if (zstream.avail_in == 0) {
-      const size_t read_size = (remaining_bytes > kBufSize) ? kBufSize : remaining_bytes;
+      const uint32_t read_size = (remaining_bytes > kBufSize) ? kBufSize : remaining_bytes;
       const uint32_t offset = (compressed_length - remaining_bytes);
       // Make sure to read at offset to ensure concurrent access to the fd.
       if (!reader.ReadAtOffset(read_buf.data(), read_size, offset)) {
-        ALOGW("Zip: inflate read failed, getSize = %zu: %s", read_size, strerror(errno));
+        ALOGW("Zip: inflate read failed, getSize = %u: %s", read_size, strerror(errno));
         return kIoError;
       }
 
@@ -1031,7 +1012,8 @@
       if (!writer->Append(&write_buf[0], write_size)) {
         return kIoError;
       } else if (compute_crc) {
-        crc = crc32(crc, &write_buf[0], write_size);
+        DCHECK_LE(write_size, kBufSize);
+        crc = crc32(crc, &write_buf[0], static_cast<uint32_t>(write_size));
       }
 
       zstream.next_out = &write_buf[0];
@@ -1076,17 +1058,17 @@
 
   const uint32_t length = entry->uncompressed_length;
   uint32_t count = 0;
-  uint64_t crc = 0;
+  uLong crc = 0;
   while (count < length) {
     uint32_t remaining = length - count;
     off64_t offset = entry->offset + count;
 
     // Safe conversion because kBufSize is narrow enough for a 32 bit signed value.
-    const size_t block_size = (remaining > kBufSize) ? kBufSize : remaining;
+    const uint32_t block_size = (remaining > kBufSize) ? kBufSize : remaining;
 
     // Make sure to read at offset to ensure concurrent access to the fd.
     if (!mapped_zip.ReadAtOffset(buf.data(), block_size, offset)) {
-      ALOGW("CopyFileToFile: copy read failed, block_size = %zu, offset = %" PRId64 ": %s",
+      ALOGW("CopyFileToFile: copy read failed, block_size = %u, offset = %" PRId64 ": %s",
             block_size, static_cast<int64_t>(offset), strerror(errno));
       return kIoError;
     }
@@ -1094,11 +1076,15 @@
     if (!writer->Append(&buf[0], block_size)) {
       return kIoError;
     }
-    crc = crc32(crc, &buf[0], block_size);
+    if (crc_out) {
+      crc = crc32(crc, &buf[0], block_size);
+    }
     count += block_size;
   }
 
-  *crc_out = crc;
+  if (crc_out) {
+    *crc_out = crc;
+  }
 
   return 0;
 }
@@ -1110,9 +1096,11 @@
   int32_t return_value = -1;
   uint64_t crc = 0;
   if (method == kCompressStored) {
-    return_value = CopyEntryToWriter(archive->mapped_zip, entry, writer, &crc);
+    return_value =
+        CopyEntryToWriter(archive->mapped_zip, entry, writer, kCrcChecksEnabled ? &crc : nullptr);
   } else if (method == kCompressDeflated) {
-    return_value = InflateEntryToWriter(archive->mapped_zip, entry, writer, &crc);
+    return_value = InflateEntryToWriter(archive->mapped_zip, entry, writer,
+                                        kCrcChecksEnabled ? &crc : nullptr);
   }
 
   if (!return_value && entry->has_data_descriptor) {
@@ -1163,10 +1151,8 @@
   return archive->mapped_zip.GetFileDescriptor();
 }
 
-ZipString::ZipString(const char* entry_name) : name(reinterpret_cast<const uint8_t*>(entry_name)) {
-  size_t len = strlen(entry_name);
-  CHECK_LE(len, static_cast<size_t>(UINT16_MAX));
-  name_length = static_cast<uint16_t>(len);
+off64_t GetFileDescriptorOffset(const ZipArchiveHandle archive) {
+  return archive->mapped_zip.GetFileOffset();
 }
 
 #if !defined(_WIN32)
@@ -1200,7 +1186,7 @@
   return fd_;
 }
 
-void* MappedZipFile::GetBasePtr() const {
+const void* MappedZipFile::GetBasePtr() const {
   if (has_fd_) {
     ALOGW("Zip: MappedZipFile doesn't have a base pointer.");
     return nullptr;
@@ -1208,55 +1194,95 @@
   return base_ptr_;
 }
 
+off64_t MappedZipFile::GetFileOffset() const {
+  return fd_offset_;
+}
+
 off64_t MappedZipFile::GetFileLength() const {
   if (has_fd_) {
-    off64_t result = lseek64(fd_, 0, SEEK_END);
-    if (result == -1) {
+    if (data_length_ != -1) {
+      return data_length_;
+    }
+    data_length_ = lseek64(fd_, 0, SEEK_END);
+    if (data_length_ == -1) {
       ALOGE("Zip: lseek on fd %d failed: %s", fd_, strerror(errno));
     }
-    return result;
+    return data_length_;
   } else {
     if (base_ptr_ == nullptr) {
-      ALOGE("Zip: invalid file map\n");
+      ALOGE("Zip: invalid file map");
       return -1;
     }
-    return static_cast<off64_t>(data_length_);
+    return data_length_;
   }
 }
 
 // Attempts to read |len| bytes into |buf| at offset |off|.
 bool MappedZipFile::ReadAtOffset(uint8_t* buf, size_t len, off64_t off) const {
   if (has_fd_) {
-    if (!android::base::ReadFullyAtOffset(fd_, buf, len, off)) {
-      ALOGE("Zip: failed to read at offset %" PRId64 "\n", off);
+    if (off < 0) {
+      ALOGE("Zip: invalid offset %" PRId64, off);
+      return false;
+    }
+
+    off64_t read_offset;
+    if (__builtin_add_overflow(fd_offset_, off, &read_offset)) {
+      ALOGE("Zip: invalid read offset %" PRId64 " overflows, fd offset %" PRId64, off, fd_offset_);
+      return false;
+    }
+
+    if (data_length_ != -1) {
+      off64_t read_end;
+      if (len > std::numeric_limits<off64_t>::max() ||
+          __builtin_add_overflow(off, static_cast<off64_t>(len), &read_end)) {
+        ALOGE("Zip: invalid read length %" PRId64 " overflows, offset %" PRId64,
+              static_cast<off64_t>(len), off);
+        return false;
+      }
+
+      if (read_end > data_length_) {
+        ALOGE("Zip: invalid read length %" PRId64 " exceeds data length %" PRId64 ", offset %"
+              PRId64, static_cast<off64_t>(len), data_length_, off);
+        return false;
+      }
+    }
+
+    if (!android::base::ReadFullyAtOffset(fd_, buf, len, read_offset)) {
+      ALOGE("Zip: failed to read at offset %" PRId64, off);
       return false;
     }
   } else {
-    if (off < 0 || off > static_cast<off64_t>(data_length_)) {
-      ALOGE("Zip: invalid offset: %" PRId64 ", data length: %" PRId64 "\n", off, data_length_);
+    if (off < 0 || off > data_length_) {
+      ALOGE("Zip: invalid offset: %" PRId64 ", data length: %" PRId64, off, data_length_);
       return false;
     }
-    memcpy(buf, static_cast<uint8_t*>(base_ptr_) + off, len);
+    memcpy(buf, static_cast<const uint8_t*>(base_ptr_) + off, len);
   }
   return true;
 }
 
-void CentralDirectory::Initialize(void* map_base_ptr, off64_t cd_start_offset, size_t cd_size) {
-  base_ptr_ = static_cast<uint8_t*>(map_base_ptr) + cd_start_offset;
+void CentralDirectory::Initialize(const void* map_base_ptr, off64_t cd_start_offset,
+                                  size_t cd_size) {
+  base_ptr_ = static_cast<const uint8_t*>(map_base_ptr) + cd_start_offset;
   length_ = cd_size;
 }
 
 bool ZipArchive::InitializeCentralDirectory(off64_t cd_start_offset, size_t cd_size) {
   if (mapped_zip.HasFd()) {
     directory_map = android::base::MappedFile::FromFd(mapped_zip.GetFileDescriptor(),
-                                                      cd_start_offset, cd_size, PROT_READ);
-    if (!directory_map) return false;
+                                                      mapped_zip.GetFileOffset() + cd_start_offset,
+                                                      cd_size, PROT_READ);
+    if (!directory_map) {
+      ALOGE("Zip: failed to map central directory (offset %" PRId64 ", size %zu): %s",
+            cd_start_offset, cd_size, strerror(errno));
+      return false;
+    }
 
     CHECK_EQ(directory_map->size(), cd_size);
     central_directory.Initialize(directory_map->data(), 0 /*offset*/, cd_size);
   } else {
     if (mapped_zip.GetBasePtr() == nullptr) {
-      ALOGE("Zip: Failed to map central directory, bad mapped_zip base pointer\n");
+      ALOGE("Zip: Failed to map central directory, bad mapped_zip base pointer");
       return false;
     }
     if (static_cast<off64_t>(cd_start_offset) + static_cast<off64_t>(cd_size) >
@@ -1273,6 +1299,7 @@
   return true;
 }
 
+// This function returns the embedded timestamp as is; and doesn't perform validations.
 tm ZipEntry::GetModificationTime() const {
   tm t = {};
 
diff --git a/libziparchive/zip_archive_benchmark.cpp b/libziparchive/zip_archive_benchmark.cpp
index 46aa5a6..cfa5912 100644
--- a/libziparchive/zip_archive_benchmark.cpp
+++ b/libziparchive/zip_archive_benchmark.cpp
@@ -17,7 +17,6 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
-#include <iostream>
 #include <string>
 #include <tuple>
 #include <vector>
@@ -28,17 +27,20 @@
 #include <ziparchive/zip_archive_stream_entry.h>
 #include <ziparchive/zip_writer.h>
 
-static TemporaryFile* CreateZip() {
-  TemporaryFile* result = new TemporaryFile;
+static std::unique_ptr<TemporaryFile> CreateZip(int size = 4, int count = 1000) {
+  auto result = std::make_unique<TemporaryFile>();
   FILE* fp = fdopen(result->fd, "w");
 
   ZipWriter writer(fp);
   std::string lastName = "file";
-  for (size_t i = 0; i < 1000; i++) {
+  for (size_t i = 0; i < count; i++) {
     // Make file names longer and longer.
     lastName = lastName + std::to_string(i);
     writer.StartEntry(lastName.c_str(), ZipWriter::kCompress);
-    writer.WriteBytes("helo", 4);
+    while (size > 0) {
+      writer.WriteBytes("helo", 4);
+      size -= 4;
+    }
     writer.FinishEntry();
   }
   writer.Finish();
@@ -55,10 +57,10 @@
 
   // In order to walk through all file names in the archive, look for a name
   // that does not exist in the archive.
-  ZipString name("thisFileNameDoesNotExist");
+  std::string_view name("thisFileNameDoesNotExist");
 
   // Start the benchmark.
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     OpenArchive(temp_file->path, &handle);
     FindEntry(handle, name, &data);
     CloseArchive(handle);
@@ -71,11 +73,11 @@
   ZipArchiveHandle handle;
   void* iteration_cookie;
   ZipEntry data;
-  ZipString name;
+  std::string name;
 
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     OpenArchive(temp_file->path, &handle);
-    StartIteration(handle, &iteration_cookie, nullptr, nullptr);
+    StartIteration(handle, &iteration_cookie);
     while (Next(iteration_cookie, &data, &name) == 0) {
     }
     EndIteration(iteration_cookie);
@@ -84,4 +86,50 @@
 }
 BENCHMARK(Iterate_all_files);
 
+static void StartAlignedEntry(benchmark::State& state) {
+  TemporaryFile file;
+  FILE* fp = fdopen(file.fd, "w");
+
+  ZipWriter writer(fp);
+
+  auto alignment = uint32_t(state.range(0));
+  std::string name = "name";
+  int counter = 0;
+  for (auto _ : state) {
+    writer.StartAlignedEntry(name + std::to_string(counter++), 0, alignment);
+    state.PauseTiming();
+    writer.WriteBytes("hola", 4);
+    writer.FinishEntry();
+    state.ResumeTiming();
+  }
+
+  writer.Finish();
+  fclose(fp);
+}
+BENCHMARK(StartAlignedEntry)->Arg(2)->Arg(16)->Arg(1024)->Arg(4096);
+
+static void ExtractEntry(benchmark::State& state) {
+  std::unique_ptr<TemporaryFile> temp_file(CreateZip(1024 * 1024, 1));
+
+  ZipArchiveHandle handle;
+  ZipEntry data;
+  if (OpenArchive(temp_file->path, &handle)) {
+    state.SkipWithError("Failed to open archive");
+  }
+  if (FindEntry(handle, "file0", &data)) {
+    state.SkipWithError("Failed to find archive entry");
+  }
+
+  std::vector<uint8_t> buffer(1024 * 1024);
+  for (auto _ : state) {
+    if (ExtractToMemory(handle, &data, buffer.data(), uint32_t(buffer.size()))) {
+      state.SkipWithError("Failed to extract archive entry");
+      break;
+    }
+  }
+  CloseArchive(handle);
+}
+
+BENCHMARK(ExtractEntry)->Arg(2)->Arg(16)->Arg(1024);
+
 BENCHMARK_MAIN();
diff --git a/libziparchive/zip_archive_private.h b/libziparchive/zip_archive_private.h
index 330a02a..3625038 100644
--- a/libziparchive/zip_archive_private.h
+++ b/libziparchive/zip_archive_private.h
@@ -42,6 +42,7 @@
     "Invalid entry name",
     "I/O error",
     "File mapping failed",
+    "Allocation failed",
 };
 
 enum ErrorCodes : int32_t {
@@ -87,22 +88,31 @@
   // We were not able to mmap the central directory or entry contents.
   kMmapFailed = -12,
 
-  kLastErrorCode = kMmapFailed,
+  // An allocation failed.
+  kAllocationFailed = -13,
+
+  kLastErrorCode = kAllocationFailed,
 };
 
 class MappedZipFile {
  public:
   explicit MappedZipFile(const int fd)
-      : has_fd_(true), fd_(fd), base_ptr_(nullptr), data_length_(0) {}
+      : has_fd_(true), fd_(fd), fd_offset_(0), base_ptr_(nullptr), data_length_(-1) {}
 
-  explicit MappedZipFile(void* address, size_t length)
-      : has_fd_(false), fd_(-1), base_ptr_(address), data_length_(static_cast<off64_t>(length)) {}
+  explicit MappedZipFile(const int fd, off64_t length, off64_t offset)
+      : has_fd_(true), fd_(fd), fd_offset_(offset), base_ptr_(nullptr), data_length_(length) {}
+
+  explicit MappedZipFile(const void* address, size_t length)
+      : has_fd_(false), fd_(-1), fd_offset_(0), base_ptr_(address),
+        data_length_(static_cast<off64_t>(length)) {}
 
   bool HasFd() const { return has_fd_; }
 
   int GetFileDescriptor() const;
 
-  void* GetBasePtr() const;
+  const void* GetBasePtr() const;
+
+  off64_t GetFileOffset() const;
 
   off64_t GetFileLength() const;
 
@@ -116,9 +126,10 @@
   const bool has_fd_;
 
   const int fd_;
+  const off64_t fd_offset_;
 
-  void* const base_ptr_;
-  const off64_t data_length_;
+  const void* const base_ptr_;
+  mutable off64_t data_length_;
 };
 
 class CentralDirectory {
@@ -129,7 +140,7 @@
 
   size_t GetMapLength() const { return length_; }
 
-  void Initialize(void* map_base_ptr, off64_t cd_start_offset, size_t cd_size);
+  void Initialize(const void* map_base_ptr, off64_t cd_start_offset, size_t cd_size);
 
  private:
   const uint8_t* base_ptr_;
@@ -137,22 +148,22 @@
 };
 
 /**
- * More space efficient string representation of strings in an mmaped zipped file than
- * std::string_view or ZipString. Using ZipString as an entry in the ZipArchive hashtable wastes
- * space. ZipString stores a pointer to a string (on 64 bit, 8 bytes) and the length to read from
- * that pointer, 2 bytes. Because of alignment, the structure consumes 16 bytes, wasting 6 bytes.
- * ZipStringOffset stores a 4 byte offset from a fixed location in the memory mapped file instead
- * of the entire address, consuming 8 bytes with alignment.
+ * More space efficient string representation of strings in an mmaped zipped
+ * file than std::string_view. Using std::string_view as an entry in the
+ * ZipArchive hash table wastes space. std::string_view stores a pointer to a
+ * string (on 64 bit, 8 bytes) and the length to read from that pointer,
+ * 2 bytes. Because of alignment, the structure consumes 16 bytes, wasting
+ * 6 bytes.
+ *
+ * ZipStringOffset stores a 4 byte offset from a fixed location in the memory
+ * mapped file instead of the entire address, consuming 8 bytes with alignment.
  */
 struct ZipStringOffset {
   uint32_t name_offset;
   uint16_t name_length;
 
-  const ZipString GetZipString(const uint8_t* start) const {
-    ZipString zip_string;
-    zip_string.name = start + name_offset;
-    zip_string.name_length = name_length;
-    return zip_string;
+  const std::string_view ToStringView(const uint8_t* start) const {
+    return std::string_view{reinterpret_cast<const char*>(start + name_offset), name_length};
   }
 };
 
@@ -176,8 +187,8 @@
   uint32_t hash_table_size;
   ZipStringOffset* hash_table;
 
-  ZipArchive(const int fd, bool assume_ownership);
-  ZipArchive(void* address, size_t length);
+  ZipArchive(MappedZipFile&& map, bool assume_ownership);
+  ZipArchive(const void* address, size_t length);
   ~ZipArchive();
 
   bool InitializeCentralDirectory(off64_t cd_start_offset, size_t cd_size);
diff --git a/libziparchive/zip_archive_stream_entry.cc b/libziparchive/zip_archive_stream_entry.cc
index 9ec89b1..1ec95b6 100644
--- a/libziparchive/zip_archive_stream_entry.cc
+++ b/libziparchive/zip_archive_stream_entry.cc
@@ -27,6 +27,7 @@
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/logging.h>
 #include <log/log.h>
 
 #include <ziparchive/zip_archive.h>
@@ -77,6 +78,12 @@
 }
 
 const std::vector<uint8_t>* ZipArchiveStreamEntryUncompressed::Read() {
+  // Simple sanity check. The vector should *only* be handled by this code. A caller
+  // should not const-cast and modify the capacity. This may invalidate next_out.
+  //
+  // Note: it would be better to store the results of data() across Read calls.
+  CHECK_EQ(data_.capacity(), kBufSize);
+
   if (length_ == 0) {
     return nullptr;
   }
@@ -97,7 +104,8 @@
   if (bytes < data_.size()) {
     data_.resize(bytes);
   }
-  computed_crc32_ = crc32(computed_crc32_, data_.data(), data_.size());
+  computed_crc32_ = static_cast<uint32_t>(
+      crc32(computed_crc32_, data_.data(), static_cast<uint32_t>(data_.size())));
   length_ -= bytes;
   offset_ += bytes;
   return &data_;
@@ -192,9 +200,15 @@
 }
 
 const std::vector<uint8_t>* ZipArchiveStreamEntryCompressed::Read() {
+  // Simple sanity check. The vector should *only* be handled by this code. A caller
+  // should not const-cast and modify the capacity. This may invalidate next_out.
+  //
+  // Note: it would be better to store the results of data() across Read calls.
+  CHECK_EQ(out_.capacity(), kBufSize);
+
   if (z_stream_.avail_out == 0) {
     z_stream_.next_out = out_.data();
-    z_stream_.avail_out = out_.size();
+    z_stream_.avail_out = static_cast<uint32_t>(out_.size());
     ;
   }
 
@@ -203,7 +217,9 @@
       if (compressed_length_ == 0) {
         return nullptr;
       }
-      size_t bytes = (compressed_length_ > in_.size()) ? in_.size() : compressed_length_;
+      DCHECK_LE(in_.size(), std::numeric_limits<uint32_t>::max());  // Should be buf size = 64k.
+      uint32_t bytes = (compressed_length_ > in_.size()) ? static_cast<uint32_t>(in_.size())
+                                                         : compressed_length_;
       ZipArchive* archive = reinterpret_cast<ZipArchive*>(handle_);
       errno = 0;
       if (!archive->mapped_zip.ReadAtOffset(in_.data(), bytes, offset_)) {
@@ -230,14 +246,16 @@
 
     if (z_stream_.avail_out == 0) {
       uncompressed_length_ -= out_.size();
-      computed_crc32_ = crc32(computed_crc32_, out_.data(), out_.size());
+      computed_crc32_ = static_cast<uint32_t>(
+          crc32(computed_crc32_, out_.data(), static_cast<uint32_t>(out_.size())));
       return &out_;
     }
     if (zerr == Z_STREAM_END) {
       if (z_stream_.avail_out != 0) {
         // Resize the vector down to the actual size of the data.
         out_.resize(out_.size() - z_stream_.avail_out);
-        computed_crc32_ = crc32(computed_crc32_, out_.data(), out_.size());
+        computed_crc32_ = static_cast<uint32_t>(
+            crc32(computed_crc32_, out_.data(), static_cast<uint32_t>(out_.size())));
         uncompressed_length_ -= out_.size();
         return &out_;
       }
diff --git a/libziparchive/zip_archive_test.cc b/libziparchive/zip_archive_test.cc
index cea42d4..35fb3fe 100644
--- a/libziparchive/zip_archive_test.cc
+++ b/libziparchive/zip_archive_test.cc
@@ -27,6 +27,7 @@
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/logging.h>
 #include <android-base/mapped_file.h>
 #include <android-base/unique_fd.h>
 #include <gtest/gtest.h>
@@ -35,13 +36,9 @@
 
 static std::string test_data_dir = android::base::GetExecutableDirectory() + "/testdata";
 
-static const std::string kMissingZip = "missing.zip";
 static const std::string kValidZip = "valid.zip";
 static const std::string kLargeZip = "large.zip";
 static const std::string kBadCrcZip = "bad_crc.zip";
-static const std::string kCrashApk = "crash.apk";
-static const std::string kBadFilenameZip = "bad_filename.zip";
-static const std::string kUpdateZip = "dummy-update.zip";
 
 static const std::vector<uint8_t> kATxtContents{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'a',
                                                 'b', 'c', 'd', 'e', 'f', 'g', 'h', '\n'};
@@ -51,41 +48,41 @@
 
 static const std::vector<uint8_t> kBTxtContents{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '\n'};
 
-static const std::string kATxtName("a.txt");
-static const std::string kBTxtName("b.txt");
-static const std::string kNonexistentTxtName("nonexistent.txt");
-static const std::string kEmptyTxtName("empty.txt");
-static const std::string kLargeCompressTxtName("compress.txt");
-static const std::string kLargeUncompressTxtName("uncompress.txt");
-
 static int32_t OpenArchiveWrapper(const std::string& name, ZipArchiveHandle* handle) {
   const std::string abs_path = test_data_dir + "/" + name;
   return OpenArchive(abs_path.c_str(), handle);
 }
 
-static void SetZipString(ZipString* zip_str, const std::string& str) {
-  zip_str->name = reinterpret_cast<const uint8_t*>(str.c_str());
-  zip_str->name_length = str.size();
-}
-
 TEST(ziparchive, Open) {
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
   CloseArchive(handle);
 
-  ASSERT_EQ(-1, OpenArchiveWrapper(kBadFilenameZip, &handle));
+  ASSERT_EQ(kInvalidEntryName, OpenArchiveWrapper("bad_filename.zip", &handle));
   CloseArchive(handle);
 }
 
 TEST(ziparchive, OutOfBound) {
   ZipArchiveHandle handle;
-  ASSERT_EQ(-8, OpenArchiveWrapper(kCrashApk, &handle));
+  ASSERT_EQ(kInvalidOffset, OpenArchiveWrapper("crash.apk", &handle));
+  CloseArchive(handle);
+}
+
+TEST(ziparchive, EmptyArchive) {
+  ZipArchiveHandle handle;
+  ASSERT_EQ(kEmptyArchive, OpenArchiveWrapper("empty.zip", &handle));
+  CloseArchive(handle);
+}
+
+TEST(ziparchive, ZeroSizeCentralDirectory) {
+  ZipArchiveHandle handle;
+  ASSERT_EQ(kInvalidFile, OpenArchiveWrapper("zero-size-cd.zip", &handle));
   CloseArchive(handle);
 }
 
 TEST(ziparchive, OpenMissing) {
   ZipArchiveHandle handle;
-  ASSERT_NE(0, OpenArchiveWrapper(kMissingZip, &handle));
+  ASSERT_NE(0, OpenArchiveWrapper("missing.zip", &handle));
 
   // Confirm the file descriptor is not going to be mistaken for a valid one.
   ASSERT_EQ(-1, GetFileDescriptor(handle));
@@ -111,7 +108,53 @@
   close(fd);
 }
 
-static void AssertIterationOrder(const ZipString* prefix, const ZipString* suffix,
+TEST(ziparchive, OpenAssumeFdRangeOwnership) {
+  int fd = open((test_data_dir + "/" + kValidZip).c_str(), O_RDONLY | O_BINARY);
+  ASSERT_NE(-1, fd);
+  const off64_t length = lseek64(fd, 0, SEEK_END);
+  ASSERT_NE(-1, length);
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveFdRange(fd, "OpenWithAssumeFdOwnership", &handle,
+                                  static_cast<size_t>(length), 0));
+  CloseArchive(handle);
+  ASSERT_EQ(-1, lseek(fd, 0, SEEK_SET));
+  ASSERT_EQ(EBADF, errno);
+}
+
+TEST(ziparchive, OpenDoNotAssumeFdRangeOwnership) {
+  int fd = open((test_data_dir + "/" + kValidZip).c_str(), O_RDONLY | O_BINARY);
+  ASSERT_NE(-1, fd);
+  const off64_t length = lseek(fd, 0, SEEK_END);
+  ASSERT_NE(-1, length);
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveFdRange(fd, "OpenWithAssumeFdOwnership", &handle,
+                                  static_cast<size_t>(length), 0, false));
+  CloseArchive(handle);
+  ASSERT_EQ(0, lseek(fd, 0, SEEK_SET));
+  close(fd);
+}
+
+TEST(ziparchive, Iteration_std_string_view) {
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
+
+  void* iteration_cookie;
+  ASSERT_EQ(0, StartIteration(handle, &iteration_cookie));
+
+  ZipEntry data;
+  std::vector<std::string_view> names;
+  std::string_view name;
+  while (Next(iteration_cookie, &data, &name) == 0) names.push_back(name);
+
+  // Assert that the names are as expected.
+  std::vector<std::string_view> expected_names{"a.txt", "b.txt", "b/", "b/c.txt", "b/d.txt"};
+  std::sort(names.begin(), names.end());
+  ASSERT_EQ(expected_names, names);
+
+  CloseArchive(handle);
+}
+
+static void AssertIterationOrder(const std::string_view prefix, const std::string_view suffix,
                                  const std::vector<std::string>& expected_names_sorted) {
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
@@ -122,10 +165,10 @@
   ZipEntry data;
   std::vector<std::string> names;
 
-  ZipString name;
+  std::string name;
   for (size_t i = 0; i < expected_names_sorted.size(); ++i) {
     ASSERT_EQ(0, Next(iteration_cookie, &data, &name));
-    names.push_back(std::string(reinterpret_cast<const char*>(name.name), name.name_length));
+    names.push_back(name);
   }
 
   // End of iteration.
@@ -141,30 +184,26 @@
   static const std::vector<std::string> kExpectedMatchesSorted = {"a.txt", "b.txt", "b/", "b/c.txt",
                                                                   "b/d.txt"};
 
-  AssertIterationOrder(nullptr, nullptr, kExpectedMatchesSorted);
+  AssertIterationOrder("", "", kExpectedMatchesSorted);
 }
 
 TEST(ziparchive, IterationWithPrefix) {
-  ZipString prefix("b/");
   static const std::vector<std::string> kExpectedMatchesSorted = {"b/", "b/c.txt", "b/d.txt"};
 
-  AssertIterationOrder(&prefix, nullptr, kExpectedMatchesSorted);
+  AssertIterationOrder("b/", "", kExpectedMatchesSorted);
 }
 
 TEST(ziparchive, IterationWithSuffix) {
-  ZipString suffix(".txt");
   static const std::vector<std::string> kExpectedMatchesSorted = {"a.txt", "b.txt", "b/c.txt",
                                                                   "b/d.txt"};
 
-  AssertIterationOrder(nullptr, &suffix, kExpectedMatchesSorted);
+  AssertIterationOrder("", ".txt", kExpectedMatchesSorted);
 }
 
 TEST(ziparchive, IterationWithPrefixAndSuffix) {
-  ZipString prefix("b");
-  ZipString suffix(".txt");
   static const std::vector<std::string> kExpectedMatchesSorted = {"b.txt", "b/c.txt", "b/d.txt"};
 
-  AssertIterationOrder(&prefix, &suffix, kExpectedMatchesSorted);
+  AssertIterationOrder("b", ".txt", kExpectedMatchesSorted);
 }
 
 TEST(ziparchive, IterationWithBadPrefixAndSuffix) {
@@ -172,12 +211,10 @@
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
 
   void* iteration_cookie;
-  ZipString prefix("x");
-  ZipString suffix("y");
-  ASSERT_EQ(0, StartIteration(handle, &iteration_cookie, &prefix, &suffix));
+  ASSERT_EQ(0, StartIteration(handle, &iteration_cookie, "x", "y"));
 
   ZipEntry data;
-  ZipString name;
+  std::string name;
 
   // End of iteration.
   ASSERT_EQ(-1, Next(iteration_cookie, &data, &name));
@@ -190,9 +227,7 @@
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
 
   ZipEntry data;
-  ZipString name;
-  SetZipString(&name, kATxtName);
-  ASSERT_EQ(0, FindEntry(handle, name, &data));
+  ASSERT_EQ(0, FindEntry(handle, "a.txt", &data));
 
   // Known facts about a.txt, from zipinfo -v.
   ASSERT_EQ(63, data.offset);
@@ -203,9 +238,28 @@
   ASSERT_EQ(static_cast<uint32_t>(0x438a8005), data.mod_time);
 
   // An entry that doesn't exist. Should be a negative return code.
-  ZipString absent_name;
-  SetZipString(&absent_name, kNonexistentTxtName);
-  ASSERT_LT(FindEntry(handle, absent_name, &data), 0);
+  ASSERT_LT(FindEntry(handle, "this file does not exist", &data), 0);
+
+  CloseArchive(handle);
+}
+
+TEST(ziparchive, FindEntry_empty) {
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
+
+  ZipEntry data;
+  ASSERT_EQ(kInvalidEntryName, FindEntry(handle, "", &data));
+
+  CloseArchive(handle);
+}
+
+TEST(ziparchive, FindEntry_too_long) {
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
+
+  std::string very_long_name(65536, 'x');
+  ZipEntry data;
+  ASSERT_EQ(kInvalidEntryName, FindEntry(handle, very_long_name, &data));
 
   CloseArchive(handle);
 }
@@ -215,9 +269,9 @@
   ASSERT_EQ(0, OpenArchiveWrapper("declaredlength.zip", &handle));
 
   void* iteration_cookie;
-  ASSERT_EQ(0, StartIteration(handle, &iteration_cookie, nullptr, nullptr));
+  ASSERT_EQ(0, StartIteration(handle, &iteration_cookie));
 
-  ZipString name;
+  std::string name;
   ZipEntry data;
 
   ASSERT_EQ(Next(iteration_cookie, &data, &name), 0);
@@ -226,15 +280,55 @@
   CloseArchive(handle);
 }
 
+TEST(ziparchive, OpenArchiveFdRange) {
+  TemporaryFile tmp_file;
+  ASSERT_NE(-1, tmp_file.fd);
+
+  const std::string leading_garbage(21, 'x');
+  ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, leading_garbage.c_str(),
+                                        leading_garbage.size()));
+
+  std::string valid_content;
+  ASSERT_TRUE(android::base::ReadFileToString(test_data_dir + "/" + kValidZip, &valid_content));
+  ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, valid_content.c_str(), valid_content.size()));
+
+  const std::string ending_garbage(42, 'x');
+  ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, ending_garbage.c_str(),
+                                        ending_garbage.size()));
+
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, lseek(tmp_file.fd, 0, SEEK_SET));
+  ASSERT_EQ(0, OpenArchiveFdRange(tmp_file.fd, "OpenArchiveFdRange", &handle,
+                                  valid_content.size(),
+                                  static_cast<off64_t>(leading_garbage.size())));
+
+  // An entry that's deflated.
+  ZipEntry data;
+  ASSERT_EQ(0, FindEntry(handle, "a.txt", &data));
+  const uint32_t a_size = data.uncompressed_length;
+  ASSERT_EQ(a_size, kATxtContents.size());
+  auto buffer = std::unique_ptr<uint8_t[]>(new uint8_t[a_size]);
+  ASSERT_EQ(0, ExtractToMemory(handle, &data, buffer.get(), a_size));
+  ASSERT_EQ(0, memcmp(buffer.get(), kATxtContents.data(), a_size));
+
+  // An entry that's stored.
+  ASSERT_EQ(0, FindEntry(handle, "b.txt", &data));
+  const uint32_t b_size = data.uncompressed_length;
+  ASSERT_EQ(b_size, kBTxtContents.size());
+  buffer = std::unique_ptr<uint8_t[]>(new uint8_t[b_size]);
+  ASSERT_EQ(0, ExtractToMemory(handle, &data, buffer.get(), b_size));
+  ASSERT_EQ(0, memcmp(buffer.get(), kBTxtContents.data(), b_size));
+
+  CloseArchive(handle);
+}
+
 TEST(ziparchive, ExtractToMemory) {
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
 
   // An entry that's deflated.
   ZipEntry data;
-  ZipString a_name;
-  SetZipString(&a_name, kATxtName);
-  ASSERT_EQ(0, FindEntry(handle, a_name, &data));
+  ASSERT_EQ(0, FindEntry(handle, "a.txt", &data));
   const uint32_t a_size = data.uncompressed_length;
   ASSERT_EQ(a_size, kATxtContents.size());
   uint8_t* buffer = new uint8_t[a_size];
@@ -243,9 +337,7 @@
   delete[] buffer;
 
   // An entry that's stored.
-  ZipString b_name;
-  SetZipString(&b_name, kBTxtName);
-  ASSERT_EQ(0, FindEntry(handle, b_name, &data));
+  ASSERT_EQ(0, FindEntry(handle, "b.txt", &data));
   const uint32_t b_size = data.uncompressed_length;
   ASSERT_EQ(b_size, kBTxtContents.size());
   buffer = new uint8_t[b_size];
@@ -300,9 +392,7 @@
   ASSERT_EQ(0, OpenArchiveFd(tmp_file.fd, "EmptyEntriesTest", &handle, false));
 
   ZipEntry entry;
-  ZipString empty_name;
-  SetZipString(&empty_name, kEmptyTxtName);
-  ASSERT_EQ(0, FindEntry(handle, empty_name, &entry));
+  ASSERT_EQ(0, FindEntry(handle, "empty.txt", &entry));
   ASSERT_EQ(static_cast<uint32_t>(0), entry.uncompressed_length);
   uint8_t buffer[1];
   ASSERT_EQ(0, ExtractToMemory(handle, &entry, buffer, 1));
@@ -325,14 +415,12 @@
   ASSERT_EQ(0, OpenArchiveFd(tmp_file.fd, "EntryLargerThan32KTest", &handle, false));
 
   ZipEntry entry;
-  ZipString ab_name;
-  SetZipString(&ab_name, kAbTxtName);
-  ASSERT_EQ(0, FindEntry(handle, ab_name, &entry));
+  ASSERT_EQ(0, FindEntry(handle, kAbTxtName, &entry));
   ASSERT_EQ(kAbUncompressedSize, entry.uncompressed_length);
 
   // Extract the entry to memory.
   std::vector<uint8_t> buffer(kAbUncompressedSize);
-  ASSERT_EQ(0, ExtractToMemory(handle, &entry, &buffer[0], buffer.size()));
+  ASSERT_EQ(0, ExtractToMemory(handle, &entry, &buffer[0], static_cast<uint32_t>(buffer.size())));
 
   // Extract the entry to a file.
   TemporaryFile tmp_output_file;
@@ -384,9 +472,7 @@
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
 
   ZipEntry entry;
-  ZipString name;
-  SetZipString(&name, kATxtName);
-  ASSERT_EQ(0, FindEntry(handle, name, &entry));
+  ASSERT_EQ(0, FindEntry(handle, "a.txt", &entry));
   ASSERT_EQ(0, ExtractEntryToFile(handle, &entry, tmp_file.fd));
 
   // Assert that the first 8 bytes of the file haven't been clobbered.
@@ -408,23 +494,22 @@
 
 #if !defined(_WIN32)
 TEST(ziparchive, OpenFromMemory) {
-  const std::string zip_path = test_data_dir + "/" + kUpdateZip;
+  const std::string zip_path = test_data_dir + "/dummy-update.zip";
   android::base::unique_fd fd(open(zip_path.c_str(), O_RDONLY | O_BINARY));
   ASSERT_NE(-1, fd);
   struct stat sb;
   ASSERT_EQ(0, fstat(fd, &sb));
 
   // Memory map the file first and open the archive from the memory region.
-  auto file_map{android::base::MappedFile::FromFd(fd, 0, sb.st_size, PROT_READ)};
+  auto file_map{
+      android::base::MappedFile::FromFd(fd, 0, static_cast<size_t>(sb.st_size), PROT_READ)};
   ZipArchiveHandle handle;
   ASSERT_EQ(0,
             OpenArchiveFromMemory(file_map->data(), file_map->size(), zip_path.c_str(), &handle));
 
   // Assert one entry can be found and extracted correctly.
-  std::string BINARY_PATH("META-INF/com/google/android/update-binary");
-  ZipString binary_path(BINARY_PATH.c_str());
   ZipEntry binary_entry;
-  ASSERT_EQ(0, FindEntry(handle, binary_path, &binary_entry));
+  ASSERT_EQ(0, FindEntry(handle, "META-INF/com/google/android/update-binary", &binary_entry));
   TemporaryFile tmp_binary;
   ASSERT_NE(-1, tmp_binary.fd);
   ASSERT_EQ(0, ExtractEntryToFile(handle, &binary_entry, tmp_binary.fd));
@@ -433,9 +518,7 @@
 
 static void ZipArchiveStreamTest(ZipArchiveHandle& handle, const std::string& entry_name, bool raw,
                                  bool verified, ZipEntry* entry, std::vector<uint8_t>* read_data) {
-  ZipString name;
-  SetZipString(&name, entry_name);
-  ASSERT_EQ(0, FindEntry(handle, name, entry));
+  ASSERT_EQ(0, FindEntry(handle, entry_name, entry));
   std::unique_ptr<ZipArchiveStreamEntry> stream;
   if (raw) {
     stream.reset(ZipArchiveStreamEntry::CreateRaw(handle, *entry));
@@ -488,34 +571,35 @@
 
   std::vector<uint8_t> cmp_data(entry.uncompressed_length);
   ASSERT_EQ(entry.uncompressed_length, read_data.size());
-  ASSERT_EQ(0, ExtractToMemory(handle, &entry, cmp_data.data(), cmp_data.size()));
+  ASSERT_EQ(
+      0, ExtractToMemory(handle, &entry, cmp_data.data(), static_cast<uint32_t>(cmp_data.size())));
   ASSERT_TRUE(memcmp(read_data.data(), cmp_data.data(), read_data.size()) == 0);
 
   CloseArchive(handle);
 }
 
 TEST(ziparchive, StreamCompressed) {
-  ZipArchiveStreamTestUsingContents(kValidZip, kATxtName, kATxtContents, false);
+  ZipArchiveStreamTestUsingContents(kValidZip, "a.txt", kATxtContents, false);
 }
 
 TEST(ziparchive, StreamUncompressed) {
-  ZipArchiveStreamTestUsingContents(kValidZip, kBTxtName, kBTxtContents, false);
+  ZipArchiveStreamTestUsingContents(kValidZip, "b.txt", kBTxtContents, false);
 }
 
 TEST(ziparchive, StreamRawCompressed) {
-  ZipArchiveStreamTestUsingContents(kValidZip, kATxtName, kATxtContentsCompressed, true);
+  ZipArchiveStreamTestUsingContents(kValidZip, "a.txt", kATxtContentsCompressed, true);
 }
 
 TEST(ziparchive, StreamRawUncompressed) {
-  ZipArchiveStreamTestUsingContents(kValidZip, kBTxtName, kBTxtContents, true);
+  ZipArchiveStreamTestUsingContents(kValidZip, "b.txt", kBTxtContents, true);
 }
 
 TEST(ziparchive, StreamLargeCompressed) {
-  ZipArchiveStreamTestUsingMemory(kLargeZip, kLargeCompressTxtName);
+  ZipArchiveStreamTestUsingMemory(kLargeZip, "compress.txt");
 }
 
 TEST(ziparchive, StreamLargeUncompressed) {
-  ZipArchiveStreamTestUsingMemory(kLargeZip, kLargeUncompressTxtName);
+  ZipArchiveStreamTestUsingMemory(kLargeZip, "uncompress.txt");
 }
 
 TEST(ziparchive, StreamCompressedBadCrc) {
@@ -524,7 +608,7 @@
 
   ZipEntry entry;
   std::vector<uint8_t> read_data;
-  ZipArchiveStreamTest(handle, kATxtName, false, false, &entry, &read_data);
+  ZipArchiveStreamTest(handle, "a.txt", false, false, &entry, &read_data);
 
   CloseArchive(handle);
 }
@@ -535,7 +619,7 @@
 
   ZipEntry entry;
   std::vector<uint8_t> read_data;
-  ZipArchiveStreamTest(handle, kBTxtName, false, false, &entry, &read_data);
+  ZipArchiveStreamTest(handle, "b.txt", false, false, &entry, &read_data);
 
   CloseArchive(handle);
 }
@@ -585,11 +669,7 @@
   // an entry whose name is "name" and whose size is 12 (contents =
   // "abdcdefghijk").
   ZipEntry entry;
-  ZipString name;
-  std::string name_str = "name";
-  SetZipString(&name, name_str);
-
-  ASSERT_EQ(0, FindEntry(handle, name, &entry));
+  ASSERT_EQ(0, FindEntry(handle, "name", &entry));
   ASSERT_EQ(static_cast<uint32_t>(12), entry.uncompressed_length);
 
   entry_out->resize(12);
@@ -636,7 +716,8 @@
 
   // Out of bounds.
   ASSERT_STREQ("Unknown return code", ErrorCodeString(1));
-  ASSERT_STREQ("Unknown return code", ErrorCodeString(-13));
+  ASSERT_STRNE("Unknown return code", ErrorCodeString(kLastErrorCode));
+  ASSERT_STREQ("Unknown return code", ErrorCodeString(kLastErrorCode - 1));
 
   ASSERT_STREQ("I/O error", ErrorCodeString(kIoError));
 }
@@ -687,7 +768,7 @@
   ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, &kZipFileWithBrokenLfhSignature[0],
                                         kZipFileWithBrokenLfhSignature.size()));
   ZipArchiveHandle handle;
-  ASSERT_EQ(-1, OpenArchiveFd(tmp_file.fd, "LeadingNonZipBytes", &handle, false));
+  ASSERT_EQ(kInvalidFile, OpenArchiveFd(tmp_file.fd, "LeadingNonZipBytes", &handle, false));
 }
 
 class VectorReader : public zip_archive::Reader {
@@ -737,8 +818,8 @@
 };
 
 TEST(ziparchive, Inflate) {
-  const uint32_t compressed_length = kATxtContentsCompressed.size();
-  const uint32_t uncompressed_length = kATxtContents.size();
+  const uint32_t compressed_length = static_cast<uint32_t>(kATxtContentsCompressed.size());
+  const uint32_t uncompressed_length = static_cast<uint32_t>(kATxtContents.size());
 
   const VectorReader reader(kATxtContentsCompressed);
   {
diff --git a/libziparchive/zip_writer.cc b/libziparchive/zip_writer.cc
index 0df0fa5..67279a6 100644
--- a/libziparchive/zip_writer.cc
+++ b/libziparchive/zip_writer.cc
@@ -130,7 +130,7 @@
   return error_code;
 }
 
-int32_t ZipWriter::StartEntry(const char* path, size_t flags) {
+int32_t ZipWriter::StartEntry(std::string_view path, size_t flags) {
   uint32_t alignment = 0;
   if (flags & kAlign32) {
     flags &= ~kAlign32;
@@ -139,11 +139,11 @@
   return StartAlignedEntryWithTime(path, flags, time_t(), alignment);
 }
 
-int32_t ZipWriter::StartAlignedEntry(const char* path, size_t flags, uint32_t alignment) {
+int32_t ZipWriter::StartAlignedEntry(std::string_view path, size_t flags, uint32_t alignment) {
   return StartAlignedEntryWithTime(path, flags, time_t(), alignment);
 }
 
-int32_t ZipWriter::StartEntryWithTime(const char* path, size_t flags, time_t time) {
+int32_t ZipWriter::StartEntryWithTime(std::string_view path, size_t flags, time_t time) {
   uint32_t alignment = 0;
   if (flags & kAlign32) {
     flags &= ~kAlign32;
@@ -169,8 +169,8 @@
     year = 80;
   }
 
-  *out_date = (year - 80) << 9 | (ptm->tm_mon + 1) << 5 | ptm->tm_mday;
-  *out_time = ptm->tm_hour << 11 | ptm->tm_min << 5 | ptm->tm_sec >> 1;
+  *out_date = static_cast<uint16_t>((year - 80) << 9 | (ptm->tm_mon + 1) << 5 | ptm->tm_mday);
+  *out_time = static_cast<uint16_t>(ptm->tm_hour << 11 | ptm->tm_min << 5 | ptm->tm_sec >> 1);
 }
 
 static void CopyFromFileEntry(const ZipWriter::FileEntry& src, bool use_data_descriptor,
@@ -193,16 +193,22 @@
   dst->compression_method = src.compression_method;
   dst->last_mod_time = src.last_mod_time;
   dst->last_mod_date = src.last_mod_date;
-  dst->file_name_length = src.path.size();
+  DCHECK_LE(src.path.size(), std::numeric_limits<uint16_t>::max());
+  dst->file_name_length = static_cast<uint16_t>(src.path.size());
   dst->extra_field_length = src.padding_length;
 }
 
-int32_t ZipWriter::StartAlignedEntryWithTime(const char* path, size_t flags, time_t time,
+int32_t ZipWriter::StartAlignedEntryWithTime(std::string_view path, size_t flags, time_t time,
                                              uint32_t alignment) {
   if (state_ != State::kWritingZip) {
     return kInvalidState;
   }
 
+  // Can only have 16535 entries because of zip records.
+  if (files_.size() == std::numeric_limits<uint16_t>::max()) {
+    return HandleError(kIoError);
+  }
+
   if (flags & kAlign32) {
     return kInvalidAlign32Flag;
   }
@@ -210,10 +216,17 @@
   if (powerof2(alignment) == 0) {
     return kInvalidAlignment;
   }
+  if (alignment > std::numeric_limits<uint16_t>::max()) {
+    return kInvalidAlignment;
+  }
 
   FileEntry file_entry = {};
   file_entry.local_file_header_offset = current_offset_;
   file_entry.path = path;
+  // No support for larger than 4GB files.
+  if (file_entry.local_file_header_offset > std::numeric_limits<uint32_t>::max()) {
+    return HandleError(kIoError);
+  }
 
   if (!IsValidEntryName(reinterpret_cast<const uint8_t*>(file_entry.path.data()),
                         file_entry.path.size())) {
@@ -234,13 +247,24 @@
   ExtractTimeAndDate(time, &file_entry.last_mod_time, &file_entry.last_mod_date);
 
   off_t offset = current_offset_ + sizeof(LocalFileHeader) + file_entry.path.size();
-  std::vector<char> zero_padding;
+  // prepare a pre-zeroed memory page in case when we need to pad some aligned data.
+  static constexpr auto kPageSize = 4096;
+  static constexpr char kSmallZeroPadding[kPageSize] = {};
+  // use this buffer if our preallocated one is too small
+  std::vector<char> zero_padding_big;
+  const char* zero_padding = nullptr;
+
   if (alignment != 0 && (offset & (alignment - 1))) {
     // Pad the extra field so the data will be aligned.
-    uint16_t padding = alignment - (offset % alignment);
+    uint16_t padding = static_cast<uint16_t>(alignment - (offset % alignment));
     file_entry.padding_length = padding;
     offset += padding;
-    zero_padding.resize(padding, 0);
+    if (padding <= std::size(kSmallZeroPadding)) {
+        zero_padding = kSmallZeroPadding;
+    } else {
+        zero_padding_big.resize(padding, 0);
+        zero_padding = zero_padding_big.data();
+    }
   }
 
   LocalFileHeader header = {};
@@ -252,11 +276,11 @@
     return HandleError(kIoError);
   }
 
-  if (fwrite(path, sizeof(*path), file_entry.path.size(), file_) != file_entry.path.size()) {
+  if (fwrite(path.data(), 1, path.size(), file_) != path.size()) {
     return HandleError(kIoError);
   }
 
-  if (file_entry.padding_length != 0 && fwrite(zero_padding.data(), 1, file_entry.padding_length,
+  if (file_entry.padding_length != 0 && fwrite(zero_padding, 1, file_entry.padding_length,
                                                file_) != file_entry.padding_length) {
     return HandleError(kIoError);
   }
@@ -314,7 +338,8 @@
   }
 
   z_stream_->next_out = buffer_.data();
-  z_stream_->avail_out = buffer_.size();
+  DCHECK_EQ(buffer_.size(), kBufSize);
+  z_stream_->avail_out = static_cast<uint32_t>(buffer_.size());
   return kNoError;
 }
 
@@ -322,25 +347,31 @@
   if (state_ != State::kWritingEntry) {
     return HandleError(kInvalidState);
   }
+  // Need to be able to mark down data correctly.
+  if (len + static_cast<uint64_t>(current_file_entry_.uncompressed_size) >
+      std::numeric_limits<uint32_t>::max()) {
+    return HandleError(kIoError);
+  }
+  uint32_t len32 = static_cast<uint32_t>(len);
 
   int32_t result = kNoError;
   if (current_file_entry_.compression_method & kCompressDeflated) {
-    result = CompressBytes(&current_file_entry_, data, len);
+    result = CompressBytes(&current_file_entry_, data, len32);
   } else {
-    result = StoreBytes(&current_file_entry_, data, len);
+    result = StoreBytes(&current_file_entry_, data, len32);
   }
 
   if (result != kNoError) {
     return result;
   }
 
-  current_file_entry_.crc32 =
-      crc32(current_file_entry_.crc32, reinterpret_cast<const Bytef*>(data), len);
-  current_file_entry_.uncompressed_size += len;
+  current_file_entry_.crc32 = static_cast<uint32_t>(
+      crc32(current_file_entry_.crc32, reinterpret_cast<const Bytef*>(data), len32));
+  current_file_entry_.uncompressed_size += len32;
   return kNoError;
 }
 
-int32_t ZipWriter::StoreBytes(FileEntry* file, const void* data, size_t len) {
+int32_t ZipWriter::StoreBytes(FileEntry* file, const void* data, uint32_t len) {
   CHECK(state_ == State::kWritingEntry);
 
   if (fwrite(data, 1, len, file_) != len) {
@@ -351,7 +382,7 @@
   return kNoError;
 }
 
-int32_t ZipWriter::CompressBytes(FileEntry* file, const void* data, size_t len) {
+int32_t ZipWriter::CompressBytes(FileEntry* file, const void* data, uint32_t len) {
   CHECK(state_ == State::kWritingEntry);
   CHECK(z_stream_);
   CHECK(z_stream_->next_out != nullptr);
@@ -379,7 +410,8 @@
 
       // Reset the output buffer for the next input.
       z_stream_->next_out = buffer_.data();
-      z_stream_->avail_out = buffer_.size();
+      DCHECK_EQ(buffer_.size(), kBufSize);
+      z_stream_->avail_out = static_cast<uint32_t>(buffer_.size());
     }
   }
   return kNoError;
@@ -404,7 +436,8 @@
     current_offset_ += write_bytes;
 
     z_stream_->next_out = buffer_.data();
-    z_stream_->avail_out = buffer_.size();
+    DCHECK_EQ(buffer_.size(), kBufSize);
+    z_stream_->avail_out = static_cast<uint32_t>(buffer_.size());
   }
   if (zerr != Z_STREAM_END) {
     return HandleError(kZlibError);
@@ -422,6 +455,11 @@
   return kNoError;
 }
 
+bool ZipWriter::ShouldUseDataDescriptor() const {
+  // Only use a trailing "data descriptor" if the output isn't seekable.
+  return !seekable_;
+}
+
 int32_t ZipWriter::FinishEntry() {
   if (state_ != State::kWritingEntry) {
     return kInvalidState;
@@ -434,7 +472,7 @@
     }
   }
 
-  if ((current_file_entry_.compression_method & kCompressDeflated) || !seekable_) {
+  if (ShouldUseDataDescriptor()) {
     // Some versions of ZIP don't allow STORED data to have a trailing DataDescriptor.
     // If this file is not seekable, or if the data is compressed, write a DataDescriptor.
     const uint32_t sig = DataDescriptor::kOptSignature;
@@ -482,7 +520,7 @@
   for (FileEntry& file : files_) {
     CentralDirectoryRecord cdr = {};
     cdr.record_signature = CentralDirectoryRecord::kSignature;
-    if ((file.compression_method & kCompressDeflated) || !seekable_) {
+    if (ShouldUseDataDescriptor()) {
       cdr.gpb_flags |= kGPBDDFlagMask;
     }
     cdr.compression_method = file.compression_method;
@@ -491,7 +529,11 @@
     cdr.crc32 = file.crc32;
     cdr.compressed_size = file.compressed_size;
     cdr.uncompressed_size = file.uncompressed_size;
-    cdr.file_name_length = file.path.size();
+    // Checked in IsValidEntryName.
+    DCHECK_LE(file.path.size(), std::numeric_limits<uint16_t>::max());
+    cdr.file_name_length = static_cast<uint16_t>(file.path.size());
+    // Checked in StartAlignedEntryWithTime.
+    DCHECK_LE(file.local_file_header_offset, std::numeric_limits<uint32_t>::max());
     cdr.local_file_header_offset = static_cast<uint32_t>(file.local_file_header_offset);
     if (fwrite(&cdr, sizeof(cdr), 1, file_) != 1) {
       return HandleError(kIoError);
@@ -508,10 +550,15 @@
   er.eocd_signature = EocdRecord::kSignature;
   er.disk_num = 0;
   er.cd_start_disk = 0;
-  er.num_records_on_disk = files_.size();
-  er.num_records = files_.size();
-  er.cd_size = current_offset_ - startOfCdr;
-  er.cd_start_offset = startOfCdr;
+  // Checked when adding entries.
+  DCHECK_LE(files_.size(), std::numeric_limits<uint16_t>::max());
+  er.num_records_on_disk = static_cast<uint16_t>(files_.size());
+  er.num_records = static_cast<uint16_t>(files_.size());
+  if (current_offset_ > std::numeric_limits<uint32_t>::max()) {
+    return HandleError(kIoError);
+  }
+  er.cd_size = static_cast<uint32_t>(current_offset_ - startOfCdr);
+  er.cd_start_offset = static_cast<uint32_t>(startOfCdr);
 
   if (fwrite(&er, sizeof(er), 1, file_) != 1) {
     return HandleError(kIoError);
diff --git a/libziparchive/zip_writer_test.cc b/libziparchive/zip_writer_test.cc
index c284273..d324d4b 100644
--- a/libziparchive/zip_writer_test.cc
+++ b/libziparchive/zip_writer_test.cc
@@ -62,7 +62,7 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("file.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "file.txt", &data));
   EXPECT_EQ(kCompressStored, data.method);
   EXPECT_EQ(0u, data.has_data_descriptor);
   EXPECT_EQ(strlen(expected), data.compressed_length);
@@ -95,19 +95,19 @@
 
   ZipEntry data;
 
-  ASSERT_EQ(0, FindEntry(handle, ZipString("file.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "file.txt", &data));
   EXPECT_EQ(kCompressStored, data.method);
   EXPECT_EQ(2u, data.compressed_length);
   ASSERT_EQ(2u, data.uncompressed_length);
   ASSERT_TRUE(AssertFileEntryContentsEq("he", handle, &data));
 
-  ASSERT_EQ(0, FindEntry(handle, ZipString("file/file.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "file/file.txt", &data));
   EXPECT_EQ(kCompressStored, data.method);
   EXPECT_EQ(3u, data.compressed_length);
   ASSERT_EQ(3u, data.uncompressed_length);
   ASSERT_TRUE(AssertFileEntryContentsEq("llo", handle, &data));
 
-  ASSERT_EQ(0, FindEntry(handle, ZipString("file/file2.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "file/file2.txt", &data));
   EXPECT_EQ(kCompressStored, data.method);
   EXPECT_EQ(0u, data.compressed_length);
   EXPECT_EQ(0u, data.uncompressed_length);
@@ -129,7 +129,7 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("align.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "align.txt", &data));
   EXPECT_EQ(0, data.offset & 0x03);
 
   CloseArchive(handle);
@@ -163,7 +163,7 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("align.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "align.txt", &data));
   EXPECT_EQ(0, data.offset & 0x03);
 
   struct tm mod = data.GetModificationTime();
@@ -191,7 +191,7 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("align.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "align.txt", &data));
   EXPECT_EQ(0, data.offset & 0xfff);
 
   CloseArchive(handle);
@@ -213,7 +213,7 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("align.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "align.txt", &data));
   EXPECT_EQ(0, data.offset & 0xfff);
 
   struct tm mod = data.GetModificationTime();
@@ -241,8 +241,9 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("file.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "file.txt", &data));
   EXPECT_EQ(kCompressDeflated, data.method);
+  EXPECT_EQ(0u, data.has_data_descriptor);
   ASSERT_EQ(4u, data.uncompressed_length);
   ASSERT_TRUE(AssertFileEntryContentsEq("helo", handle, &data));
 
@@ -257,7 +258,7 @@
   std::vector<uint8_t> buffer(kBufSize);
   size_t prev = 1;
   for (size_t i = 0; i < kBufSize; i++) {
-    buffer[i] = i + prev;
+    buffer[i] = static_cast<uint8_t>(i + prev);
     prev = i;
   }
 
@@ -273,13 +274,14 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("file.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "file.txt", &data));
   EXPECT_EQ(kCompressDeflated, data.method);
   EXPECT_EQ(kBufSize, data.uncompressed_length);
 
   std::vector<uint8_t> decompress(kBufSize);
   memset(decompress.data(), 0, kBufSize);
-  ASSERT_EQ(0, ExtractToMemory(handle, &data, decompress.data(), decompress.size()));
+  ASSERT_EQ(0, ExtractToMemory(handle, &data, decompress.data(),
+                               static_cast<uint32_t>(decompress.size())));
   EXPECT_EQ(0, memcmp(decompress.data(), buffer.data(), kBufSize))
       << "Input buffer and output buffer are different.";
 
@@ -339,17 +341,40 @@
   ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
 
   ZipEntry data;
-  ASSERT_EQ(0, FindEntry(handle, ZipString("keep.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "keep.txt", &data));
   ASSERT_TRUE(AssertFileEntryContentsEq(kKeepThis, handle, &data));
 
-  ASSERT_NE(0, FindEntry(handle, ZipString("drop.txt"), &data));
+  ASSERT_NE(0, FindEntry(handle, "drop.txt", &data));
 
-  ASSERT_EQ(0, FindEntry(handle, ZipString("replace.txt"), &data));
+  ASSERT_EQ(0, FindEntry(handle, "replace.txt", &data));
   ASSERT_TRUE(AssertFileEntryContentsEq(kReplaceWithThis, handle, &data));
 
   CloseArchive(handle);
 }
 
+TEST_F(zipwriter, WriteToUnseekableFile) {
+  const char* expected = "hello";
+  ZipWriter writer(file_);
+  writer.seekable_ = false;
+
+  ASSERT_EQ(0, writer.StartEntry("file.txt", 0));
+  ASSERT_EQ(0, writer.WriteBytes(expected, strlen(expected)));
+  ASSERT_EQ(0, writer.FinishEntry());
+  ASSERT_EQ(0, writer.Finish());
+  ASSERT_GE(0, lseek(fd_, 0, SEEK_SET));
+
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveFd(fd_, "temp", &handle, false));
+  ZipEntry data;
+  ASSERT_EQ(0, FindEntry(handle, "file.txt", &data));
+  EXPECT_EQ(kCompressStored, data.method);
+  EXPECT_EQ(1u, data.has_data_descriptor);
+  EXPECT_EQ(strlen(expected), data.compressed_length);
+  ASSERT_EQ(strlen(expected), data.uncompressed_length);
+  ASSERT_TRUE(AssertFileEntryContentsEq(expected, handle, &data));
+  CloseArchive(handle);
+}
+
 TEST_F(zipwriter, TruncateFileAfterBackup) {
   ZipWriter writer(file_);
 
@@ -391,7 +416,7 @@
   actual.resize(expected.size());
 
   uint8_t* buffer = reinterpret_cast<uint8_t*>(&*actual.begin());
-  if (ExtractToMemory(handle, zip_entry, buffer, actual.size()) != 0) {
+  if (ExtractToMemory(handle, zip_entry, buffer, static_cast<uint32_t>(actual.size())) != 0) {
     return ::testing::AssertionFailure() << "failed to extract entry";
   }
 
diff --git a/libziparchive/ziptool-tests.xml b/libziparchive/ziptool-tests.xml
new file mode 100644
index 0000000..211119f
--- /dev/null
+++ b/libziparchive/ziptool-tests.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<configuration description="Config for running ziptool-tests through Atest or in Infra">
+    <option name="test-suite-tag" value="ziptool-tests" />
+    <!-- This test requires a device, so it's not annotated with a null-device. -->
+    <test class="com.android.tradefed.testtype.binary.ExecutableHostTest" >
+        <option name="binary" value="run-ziptool-tests-on-android.sh" />
+        <!-- Test script assumes a relative path with the cli-tests/ folders. -->
+        <option name="relative-path-execution" value="true" />
+        <!-- Tests shouldn't be that long but set 15m to be safe. -->
+        <option name="per-binary-timeout" value="15m" />
+    </test>
+</configuration>
diff --git a/libziparchive/ziptool.cpp b/libziparchive/ziptool.cpp
new file mode 100644
index 0000000..dd42e90
--- /dev/null
+++ b/libziparchive/ziptool.cpp
@@ -0,0 +1,528 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <fnmatch.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <libgen.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <set>
+#include <string>
+
+#include <android-base/file.h>
+#include <android-base/strings.h>
+#include <ziparchive/zip_archive.h>
+
+using android::base::EndsWith;
+using android::base::StartsWith;
+
+enum OverwriteMode {
+  kAlways,
+  kNever,
+  kPrompt,
+};
+
+enum Role {
+  kUnzip,
+  kZipinfo,
+};
+
+static Role role;
+static OverwriteMode overwrite_mode = kPrompt;
+static bool flag_1 = false;
+static std::string flag_d;
+static bool flag_l = false;
+static bool flag_p = false;
+static bool flag_q = false;
+static bool flag_v = false;
+static bool flag_x = false;
+static const char* archive_name = nullptr;
+static std::set<std::string> includes;
+static std::set<std::string> excludes;
+static uint64_t total_uncompressed_length = 0;
+static uint64_t total_compressed_length = 0;
+static size_t file_count = 0;
+
+static const char* g_progname;
+
+static void die(int error, const char* fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  fprintf(stderr, "%s: ", g_progname);
+  vfprintf(stderr, fmt, ap);
+  if (error != 0) fprintf(stderr, ": %s", strerror(error));
+  fprintf(stderr, "\n");
+  va_end(ap);
+  exit(1);
+}
+
+static bool ShouldInclude(const std::string& name) {
+  // Explicitly excluded?
+  if (!excludes.empty()) {
+    for (const auto& exclude : excludes) {
+      if (!fnmatch(exclude.c_str(), name.c_str(), 0)) return false;
+    }
+  }
+
+  // Implicitly included?
+  if (includes.empty()) return true;
+
+  // Explicitly included?
+  for (const auto& include : includes) {
+    if (!fnmatch(include.c_str(), name.c_str(), 0)) return true;
+  }
+  return false;
+}
+
+static bool MakeDirectoryHierarchy(const std::string& path) {
+  // stat rather than lstat because a symbolic link to a directory is fine too.
+  struct stat sb;
+  if (stat(path.c_str(), &sb) != -1 && S_ISDIR(sb.st_mode)) return true;
+
+  // Ensure the parent directories exist first.
+  if (!MakeDirectoryHierarchy(android::base::Dirname(path))) return false;
+
+  // Then try to create this directory.
+  return (mkdir(path.c_str(), 0777) != -1);
+}
+
+static float CompressionRatio(int64_t uncompressed, int64_t compressed) {
+  if (uncompressed == 0) return 0;
+  return static_cast<float>(100LL * (uncompressed - compressed)) /
+         static_cast<float>(uncompressed);
+}
+
+static void MaybeShowHeader(ZipArchiveHandle zah) {
+  if (role == kUnzip) {
+    // unzip has three formats.
+    if (!flag_q) printf("Archive:  %s\n", archive_name);
+    if (flag_v) {
+      printf(
+          " Length   Method    Size  Cmpr    Date    Time   CRC-32   Name\n"
+          "--------  ------  ------- ---- ---------- ----- --------  ----\n");
+    } else if (flag_l) {
+      printf(
+          "  Length      Date    Time    Name\n"
+          "---------  ---------- -----   ----\n");
+    }
+  } else {
+    // zipinfo.
+    if (!flag_1 && includes.empty() && excludes.empty()) {
+      ZipArchiveInfo info{GetArchiveInfo(zah)};
+      printf("Archive:  %s\n", archive_name);
+      printf("Zip file size: %" PRId64 " bytes, number of entries: %zu\n", info.archive_size,
+             info.entry_count);
+    }
+  }
+}
+
+static void MaybeShowFooter() {
+  if (role == kUnzip) {
+    if (flag_v) {
+      printf(
+          "--------          -------  ---                            -------\n"
+          "%8" PRId64 "         %8" PRId64 " %3.0f%%                            %zu file%s\n",
+          total_uncompressed_length, total_compressed_length,
+          CompressionRatio(total_uncompressed_length, total_compressed_length), file_count,
+          (file_count == 1) ? "" : "s");
+    } else if (flag_l) {
+      printf(
+          "---------                     -------\n"
+          "%9" PRId64 "                     %zu file%s\n",
+          total_uncompressed_length, file_count, (file_count == 1) ? "" : "s");
+    }
+  } else {
+    if (!flag_1 && includes.empty() && excludes.empty()) {
+      printf("%zu files, %" PRId64 " bytes uncompressed, %" PRId64 " bytes compressed:  %.1f%%\n",
+             file_count, total_uncompressed_length, total_compressed_length,
+             CompressionRatio(total_uncompressed_length, total_compressed_length));
+    }
+  }
+}
+
+static bool PromptOverwrite(const std::string& dst) {
+  // TODO: [r]ename not implemented because it doesn't seem useful.
+  printf("replace %s? [y]es, [n]o, [A]ll, [N]one: ", dst.c_str());
+  fflush(stdout);
+  while (true) {
+    char* line = nullptr;
+    size_t n;
+    if (getline(&line, &n, stdin) == -1) {
+      die(0, "(EOF/read error; assuming [N]one...)");
+      overwrite_mode = kNever;
+      return false;
+    }
+    if (n == 0) continue;
+    char cmd = line[0];
+    free(line);
+    switch (cmd) {
+      case 'y':
+        return true;
+      case 'n':
+        return false;
+      case 'A':
+        overwrite_mode = kAlways;
+        return true;
+      case 'N':
+        overwrite_mode = kNever;
+        return false;
+    }
+  }
+}
+
+static void ExtractToPipe(ZipArchiveHandle zah, ZipEntry& entry, const std::string& name) {
+  // We need to extract to memory because ExtractEntryToFile insists on
+  // being able to seek and truncate, and you can't do that with stdout.
+  uint8_t* buffer = new uint8_t[entry.uncompressed_length];
+  int err = ExtractToMemory(zah, &entry, buffer, entry.uncompressed_length);
+  if (err < 0) {
+    die(0, "failed to extract %s: %s", name.c_str(), ErrorCodeString(err));
+  }
+  if (!android::base::WriteFully(1, buffer, entry.uncompressed_length)) {
+    die(errno, "failed to write %s to stdout", name.c_str());
+  }
+  delete[] buffer;
+}
+
+static void ExtractOne(ZipArchiveHandle zah, ZipEntry& entry, const std::string& name) {
+  // Bad filename?
+  if (StartsWith(name, "/") || StartsWith(name, "../") || name.find("/../") != std::string::npos) {
+    die(0, "bad filename %s", name.c_str());
+  }
+
+  // Where are we actually extracting to (for human-readable output)?
+  // flag_d is the empty string if -d wasn't used, or has a trailing '/'
+  // otherwise.
+  std::string dst = flag_d + name;
+
+  // Ensure the directory hierarchy exists.
+  if (!MakeDirectoryHierarchy(android::base::Dirname(name))) {
+    die(errno, "couldn't create directory hierarchy for %s", dst.c_str());
+  }
+
+  // An entry in a zip file can just be a directory itself.
+  if (EndsWith(name, "/")) {
+    if (mkdir(name.c_str(), entry.unix_mode) == -1) {
+      // If the directory already exists, that's fine.
+      if (errno == EEXIST) {
+        struct stat sb;
+        if (stat(name.c_str(), &sb) != -1 && S_ISDIR(sb.st_mode)) return;
+      }
+      die(errno, "couldn't extract directory %s", dst.c_str());
+    }
+    return;
+  }
+
+  // Create the file.
+  int fd = open(name.c_str(), O_CREAT | O_WRONLY | O_CLOEXEC | O_EXCL, entry.unix_mode);
+  if (fd == -1 && errno == EEXIST) {
+    if (overwrite_mode == kNever) return;
+    if (overwrite_mode == kPrompt && !PromptOverwrite(dst)) return;
+    // Either overwrite_mode is kAlways or the user consented to this specific case.
+    fd = open(name.c_str(), O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, entry.unix_mode);
+  }
+  if (fd == -1) die(errno, "couldn't create file %s", dst.c_str());
+
+  // Actually extract into the file.
+  if (!flag_q) printf("  inflating: %s\n", dst.c_str());
+  int err = ExtractEntryToFile(zah, &entry, fd);
+  if (err < 0) die(0, "failed to extract %s: %s", dst.c_str(), ErrorCodeString(err));
+  close(fd);
+}
+
+static void ListOne(const ZipEntry& entry, const std::string& name) {
+  tm t = entry.GetModificationTime();
+  char time[32];
+  snprintf(time, sizeof(time), "%04d-%02d-%02d %02d:%02d", t.tm_year + 1900, t.tm_mon + 1,
+           t.tm_mday, t.tm_hour, t.tm_min);
+  if (flag_v) {
+    printf("%8d  %s  %7d %3.0f%% %s %08x  %s\n", entry.uncompressed_length,
+           (entry.method == kCompressStored) ? "Stored" : "Defl:N", entry.compressed_length,
+           CompressionRatio(entry.uncompressed_length, entry.compressed_length), time, entry.crc32,
+           name.c_str());
+  } else {
+    printf("%9d  %s   %s\n", entry.uncompressed_length, time, name.c_str());
+  }
+}
+
+static void InfoOne(const ZipEntry& entry, const std::string& name) {
+  if (flag_1) {
+    // "android-ndk-r19b/sources/android/NOTICE"
+    printf("%s\n", name.c_str());
+    return;
+  }
+
+  int version = entry.version_made_by & 0xff;
+  int os = (entry.version_made_by >> 8) & 0xff;
+
+  // TODO: Support suid/sgid? Non-Unix/non-FAT host file system attributes?
+  const char* src_fs = "???";
+  char mode[] = "???       ";
+  if (os == 0) {
+    src_fs = "fat";
+    // https://docs.microsoft.com/en-us/windows/win32/fileio/file-attribute-constants
+    int attrs = entry.external_file_attributes & 0xff;
+    mode[0] = (attrs & 0x10) ? 'd' : '-';
+    mode[1] = 'r';
+    mode[2] = (attrs & 0x01) ? '-' : 'w';
+    // The man page also mentions ".btm", but that seems to be obsolete?
+    mode[3] = EndsWith(name, ".exe") || EndsWith(name, ".com") || EndsWith(name, ".bat") ||
+                      EndsWith(name, ".cmd")
+                  ? 'x'
+                  : '-';
+    mode[4] = (attrs & 0x20) ? 'a' : '-';
+    mode[5] = (attrs & 0x02) ? 'h' : '-';
+    mode[6] = (attrs & 0x04) ? 's' : '-';
+  } else if (os == 3) {
+    src_fs = "unx";
+    mode[0] = S_ISDIR(entry.unix_mode) ? 'd' : (S_ISREG(entry.unix_mode) ? '-' : '?');
+    mode[1] = entry.unix_mode & S_IRUSR ? 'r' : '-';
+    mode[2] = entry.unix_mode & S_IWUSR ? 'w' : '-';
+    mode[3] = entry.unix_mode & S_IXUSR ? 'x' : '-';
+    mode[4] = entry.unix_mode & S_IRGRP ? 'r' : '-';
+    mode[5] = entry.unix_mode & S_IWGRP ? 'w' : '-';
+    mode[6] = entry.unix_mode & S_IXGRP ? 'x' : '-';
+    mode[7] = entry.unix_mode & S_IROTH ? 'r' : '-';
+    mode[8] = entry.unix_mode & S_IWOTH ? 'w' : '-';
+    mode[9] = entry.unix_mode & S_IXOTH ? 'x' : '-';
+  }
+
+  char method[5] = "stor";
+  if (entry.method == kCompressDeflated) {
+    snprintf(method, sizeof(method), "def%c", "NXFS"[(entry.gpbf >> 1) & 0x3]);
+  }
+
+  // TODO: zipinfo (unlike unzip) sometimes uses time zone?
+  // TODO: this uses 4-digit years because we're not barbarians unless interoperability forces it.
+  tm t = entry.GetModificationTime();
+  char time[32];
+  snprintf(time, sizeof(time), "%04d-%02d-%02d %02d:%02d", t.tm_year + 1900, t.tm_mon + 1,
+           t.tm_mday, t.tm_hour, t.tm_min);
+
+  // "-rw-r--r--  3.0 unx      577 t- defX 19-Feb-12 16:09 android-ndk-r19b/sources/android/NOTICE"
+  printf("%s %2d.%d %s %8d %c%c %s %s %s\n", mode, version / 10, version % 10, src_fs,
+         entry.uncompressed_length, entry.is_text ? 't' : 'b',
+         entry.has_data_descriptor ? 'X' : 'x', method, time, name.c_str());
+}
+
+static void ProcessOne(ZipArchiveHandle zah, ZipEntry& entry, const std::string& name) {
+  if (role == kUnzip) {
+    if (flag_l || flag_v) {
+      // -l or -lv or -lq or -v.
+      ListOne(entry, name);
+    } else {
+      // Actually extract.
+      if (flag_p) {
+        ExtractToPipe(zah, entry, name);
+      } else {
+        ExtractOne(zah, entry, name);
+      }
+    }
+  } else {
+    // zipinfo or zipinfo -1.
+    InfoOne(entry, name);
+  }
+  total_uncompressed_length += entry.uncompressed_length;
+  total_compressed_length += entry.compressed_length;
+  ++file_count;
+}
+
+static void ProcessAll(ZipArchiveHandle zah) {
+  MaybeShowHeader(zah);
+
+  // libziparchive iteration order doesn't match the central directory.
+  // We could sort, but that would cost extra and wouldn't match either.
+  void* cookie;
+  int err = StartIteration(zah, &cookie);
+  if (err != 0) {
+    die(0, "couldn't iterate %s: %s", archive_name, ErrorCodeString(err));
+  }
+
+  ZipEntry entry;
+  std::string name;
+  while ((err = Next(cookie, &entry, &name)) >= 0) {
+    if (ShouldInclude(name)) ProcessOne(zah, entry, name);
+  }
+
+  if (err < -1) die(0, "failed iterating %s: %s", archive_name, ErrorCodeString(err));
+  EndIteration(cookie);
+
+  MaybeShowFooter();
+}
+
+static void ShowHelp(bool full) {
+  if (role == kUnzip) {
+    fprintf(full ? stdout : stderr, "usage: unzip [-d DIR] [-lnopqv] ZIP [FILE...] [-x FILE...]\n");
+    if (!full) exit(EXIT_FAILURE);
+
+    printf(
+        "\n"
+        "Extract FILEs from ZIP archive. Default is all files. Both the include and\n"
+        "exclude (-x) lists use shell glob patterns.\n"
+        "\n"
+        "-d DIR	Extract into DIR\n"
+        "-l	List contents (-lq excludes archive name, -lv is verbose)\n"
+        "-n	Never overwrite files (default: prompt)\n"
+        "-o	Always overwrite files\n"
+        "-p	Pipe to stdout\n"
+        "-q	Quiet\n"
+        "-v	List contents verbosely\n"
+        "-x FILE	Exclude files\n");
+  } else {
+    fprintf(full ? stdout : stderr, "usage: zipinfo [-1] ZIP [FILE...] [-x FILE...]\n");
+    if (!full) exit(EXIT_FAILURE);
+
+    printf(
+        "\n"
+        "Show information about FILEs from ZIP archive. Default is all files.\n"
+        "Both the include and exclude (-x) lists use shell glob patterns.\n"
+        "\n"
+        "-1	Show filenames only, one per line\n"
+        "-x FILE	Exclude files\n");
+  }
+  exit(EXIT_SUCCESS);
+}
+
+static void HandleCommonOption(int opt) {
+  switch (opt) {
+    case 'h':
+      ShowHelp(true);
+      break;
+    case 'x':
+      flag_x = true;
+      break;
+    case 1:
+      // -x swallows all following arguments, so we use '-' in the getopt
+      // string and collect files here.
+      if (!archive_name) {
+        archive_name = optarg;
+      } else if (flag_x) {
+        excludes.insert(optarg);
+      } else {
+        includes.insert(optarg);
+      }
+      break;
+    default:
+      ShowHelp(false);
+      break;
+  }
+}
+
+int main(int argc, char* argv[]) {
+  // Who am I, and what am I doing?
+  g_progname = basename(argv[0]);
+  if (!strcmp(g_progname, "ziptool") && argc > 1) return main(argc - 1, argv + 1);
+  if (!strcmp(g_progname, "unzip")) {
+    role = kUnzip;
+  } else if (!strcmp(g_progname, "zipinfo")) {
+    role = kZipinfo;
+  } else {
+    die(0, "run as ziptool with unzip or zipinfo as the first argument, or symlink");
+  }
+
+  static const struct option opts[] = {
+      {"help", no_argument, 0, 'h'},
+      {},
+  };
+
+  if (role == kUnzip) {
+    // `unzip -Z` is "zipinfo mode", so in that case just restart...
+    if (argc > 1 && !strcmp(argv[1], "-Z")) {
+      argv[1] = const_cast<char*>("zipinfo");
+      return main(argc - 1, argv + 1);
+    }
+
+    int opt;
+    while ((opt = getopt_long(argc, argv, "-d:hlnopqvx", opts, nullptr)) != -1) {
+      switch (opt) {
+        case 'd':
+          flag_d = optarg;
+          if (!EndsWith(flag_d, "/")) flag_d += '/';
+          break;
+        case 'l':
+          flag_l = true;
+          break;
+        case 'n':
+          overwrite_mode = kNever;
+          break;
+        case 'o':
+          overwrite_mode = kAlways;
+          break;
+        case 'p':
+          flag_p = flag_q = true;
+          break;
+        case 'q':
+          flag_q = true;
+          break;
+        case 'v':
+          flag_v = true;
+          break;
+        default:
+          HandleCommonOption(opt);
+          break;
+      }
+    }
+  } else {
+    int opt;
+    while ((opt = getopt_long(argc, argv, "-1hx", opts, nullptr)) != -1) {
+      switch (opt) {
+        case '1':
+          flag_1 = true;
+          break;
+        default:
+          HandleCommonOption(opt);
+          break;
+      }
+    }
+  }
+
+  if (!archive_name) die(0, "missing archive filename");
+
+  // We can't support "-" to unzip from stdin because libziparchive relies on mmap.
+  ZipArchiveHandle zah;
+  int32_t err;
+  if ((err = OpenArchive(archive_name, &zah)) != 0) {
+    die(0, "couldn't open %s: %s", archive_name, ErrorCodeString(err));
+  }
+
+  // Implement -d by changing into that directory.
+  // We'll create implicit directories based on paths in the zip file, and we'll create
+  // the -d directory itself, but we require that *parents* of the -d directory already exists.
+  // This is pretty arbitrary, but it's the behavior of the original unzip.
+  if (!flag_d.empty()) {
+    if (mkdir(flag_d.c_str(), 0777) == -1 && errno != EEXIST) {
+      die(errno, "couldn't created %s", flag_d.c_str());
+    }
+    if (chdir(flag_d.c_str()) == -1) {
+      die(errno, "couldn't chdir to %s", flag_d.c_str());
+    }
+  }
+
+  ProcessAll(zah);
+
+  CloseArchive(zah);
+  return 0;
+}
diff --git a/llkd/README.md b/llkd/README.md
index 191f988..6f92f14 100644
--- a/llkd/README.md
+++ b/llkd/README.md
@@ -1,199 +1,237 @@
-Android Live-LocK Daemon
-========================
+<!--
+Project: /_project.yaml
+Book: /_book.yaml
 
-Introduction
-------------
+{% include "_versions.html" %}
+-->
 
-Android Live-LocK Daemon (llkd) is used to catch kernel deadlocks and mitigate.
+<!--
+  Copyright 2020 The Android Open Source Project
 
-Code is structured to allow integration into another service as either as part
-of the main loop, or spun off as a thread should that be necessary.  A default
-standalone implementation is provided by llkd component.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
 
-The 'C' interface from libllkd component is thus:
+      http://www.apache.org/licenses/LICENSE-2.0
 
-    #include "llkd.h"
-    bool llkInit(const char* threadname) /* return true if enabled */
-    unsigned llkCheckMillseconds(void)   /* ms to sleep for next check */
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
 
-If a threadname is provided, a thread will be automatically spawned, otherwise
-caller must call llkCheckMilliseconds in its main loop.  Function will return
-the period of time before the next expected call to this handler.
+# Android Live-LocK Daemon (llkd)
 
-Operations
-----------
+Android 10 <!-- {{ androidQVersionNumber }} --> includes the Android Live-LocK Daemon
+(`llkd`), which is designed to catch and mitigate kernel deadlocks. The `llkd`
+component provides a default standalone implementation, but you can
+alternatively integrate the `llkd` code into another service, either as part of
+the main loop or as a separate thread.
 
-There are two detection scenarios. Persistent D or Z state, and persistent
+## Detection scenarios <!-- {:#detection-scenarios} -->
+
+The `llkd` has two detection scenarios: Persistent D or Z state, and persistent
 stack signature.
 
-If a thread is in D or Z state with no forward progress for longer than
-ro.llk.timeout_ms, or ro.llk.[D|Z].timeout_ms, kill the process or parent
-process respectively.  If another scan shows the same process continues to
-exist, then have a confirmed live-lock condition and need to panic.  Panic
-the kernel in a manner to provide the greatest bugreporting details as to the
-condition.  Add a alarm self watchdog should llkd ever get locked up that is
-double the expected time to flow through the mainloop.  Sampling is every
-ro.llk_sample_ms.
+### Persistent D or Z state <!-- {:#persistent-d-or-z-state} -->
 
-For usedebug releases only, persistent stack signature checking is enabled.
-If a thread in any state but Z, has a persistent listed ro.llk.stack kernel
-symbol always being reported, even if there is forward scheduling progress, for
-longer than ro.llk.timeout_ms, or ro.llk.stack.timeout_ms, then issue a kill
-to the process.  If another scan shows the same process continues to exist,
-then have a confirmed live-lock condition and need to panic.  There is no
-ABA detection since forward scheduling progress is allowed, thus the condition
-for the symbols are:
+If a thread is in D (uninterruptible sleep) or Z (zombie) state with no forward
+progress for longer than `ro.llk.timeout_ms or ro.llk.[D|Z].timeout_ms`, the
+`llkd` kills the process (or parent process). If a subsequent scan shows the
+same process continues to exist, the `llkd` confirms a live-lock condition and
+panics the kernel in a manner that provides the most detailed bug report for the
+condition.
 
-- Check is looking for " __symbol__+0x" or " __symbol__.cfi+0x" in
-  /proc/__pid__/stack.
-- The __symbol__ should be rare and short lived enough that on a typical
-  system the function is seen at most only once in a sample over the timeout
-  period of ro.llk.stack.timeout_ms, samples occur every ro.llk.check_ms. This
-  can be the only way to prevent a false trigger as there is no ABA protection.
-- Persistent continuously when the live lock condition exists.
-- Should be just below the function that is calling the lock that could
-  contend, because if the lock is below or in the symbol function, the
-  symbol will show in all affected processes, not just the one that
-  caused the lockup.
+The `llkd` includes a self watchdog that alarms if `llkd` locks up; watchdog is
+double the expected time to flow through the mainloop and sampling is every
+`ro.llk_sample_ms`.
 
-Default will not monitor init, or [kthreadd] and all that [kthreadd] spawns.
-This reduces the effectiveness of llkd by limiting its coverage.  If there is
-value in covering [kthreadd] spawned threads, the requirement will be that
-the drivers not remain in a persistent 'D' state, or that they have mechanisms
-to recover the thread should it be killed externally (this is good driver
-coding hygiene, a common request to add such to publicly reviewed kernel.org
-maintained drivers).  For instance use wait_event_interruptible() instead of
-wait_event().  The blacklists can be adjusted accordingly if these
-conditions are met to cover kernel components.  For the stack symbol checking,
-there is an additional process blacklist so that we do not incide sepolicy
-violations on services that block ptrace operations.
+### Persistent stack signature <!-- {:#persistent-stack-signature} -->
 
-An accompanying gTest set have been added, and will setup a persistent D or Z
-process, with and without forward progress, but not in a live-lock state
-because that would require a buggy kernel, or a module or kernel modification
-to stimulate.  The test will check that llkd will mitigate first by killing
-the appropriate process.  D state is setup by vfork() waiting for exec() in
-child process.  Z state is setup by fork() and an un-waited for child process.
-Should be noted that both of these conditions should never happen on Android
-on purpose, and llkd effectively sweeps up processes that create these
-conditions.  If the test can, it will reconfigure llkd to expedite the test
-duration by adjusting the ro.llk.* Android properties.  Tests run the D state
-with some scheduling progress to ensure that ABA checking prevents false
-triggers. If 100% reliable ABA on platform, then ro.llk.killtest can be
-set to false; however this will result in some of the unit tests to panic
-kernel instead of deal with more graceful kill operation.
+For userdebug releases, the `llkd` can detect kernel live-locks using persistent
+stack signature checking. If a thread in any state except Z has a persistent
+listed `ro.llk.stack` kernel symbol that is reported for longer than
+`ro.llk.timeout_ms` or `ro.llk.stack.timeout_ms`, the `llkd` kills the process
+(even if there is forward scheduling progress). If a subsequent scan shows the
+same process continues to exist, the `llkd` confirms a live-lock condition and
+panics the kernel in a manner that provides the most detailed bug report for the
+condition.
 
-Android Properties
-------------------
+Note: Because forward scheduling progress is allowed, the `llkd` does not
+perform [ABA detection](https://en.wikipedia.org/wiki/ABA_problem){:.external}.
 
-The following are the Android Properties llkd respond to.
-*prop*_ms named properties are in milliseconds.
-Properties that use comma (*,*) separator for lists, use a leading separator to
-preserve default and add or subtract entries with (*optional*) plus (*+*) and
-minus (*-*) prefixes respectively.
-For these lists, the string "*false*" is synonymous with an *empty* list,
-and *blank* or *missing* resorts to the specified *default* value.
+The `lldk` check persists continuously when the live lock condition exists and
+looks for the composed strings `" symbol+0x"` or `" symbol.cfi+0x"` in the
+`/proc/pid/stack` file on Linux. The list of symbols is in `ro.llk.stack` and
+defaults to the comma-separated list of
+"`cma_alloc,__get_user_pages,bit_wait_io,wait_on_page_bit_killable`".
 
-#### ro.config.low_ram
-device is configured with limited memory.
+Symbols should be rare and short-lived enough that on a typical system the
+function is seen only once in a sample over the timeout period of
+`ro.llk.stack.timeout_ms` (samples occur every `ro.llk.check_ms`). Due to lack
+of ABA protection, this is the only way to prevent a false trigger. The symbol
+function must appear below the function calling the lock that could contend. If
+the lock is below or in the symbol function, the symbol appears in all affected
+processes, not just the one that caused the lockup.
 
-#### ro.debuggable
-device is configured for userdebug or eng build.
+## Coverage <!-- {:#coverage} -->
 
-#### ro.llk.sysrq_t
-default not ro.config.low_ram, or ro.debuggable if property is "eng".
-if true do sysrq t (dump all threads).
+The default implementation of `llkd` does not monitor `init`, `[kthreadd]`, or
+`[kthreadd]` spawns. For the `llkd` to cover `[kthreadd]`-spawned threads:
 
-#### ro.llk.enable
-default false, allow live-lock daemon to be enabled.
+* Drivers must not remain in a persistent D state,
 
-#### llk.enable
-default ro.llk.enable, and evaluated for eng.
+OR
 
-#### ro.khungtask.enable
-default false, allow [khungtask] daemon to be enabled.
+* Drivers must have mechanisms to recover the thread should it be killed
+  externally. For example, use `wait_event_interruptible()` instead of
+  `wait_event()`.
 
-#### khungtask.enable
-default ro.khungtask.enable and evaluated for eng.
+If one of the above conditions is met, the `llkd` ignorelist can be adjusted to
+cover kernel components.  Stack symbol checking involves an additional process
+ignore list to prevent sepolicy violations on services that block `ptrace`
+operations.
 
-#### ro.llk.mlockall
-default false, enable call to mlockall().
+## Android properties <!-- {:#android-properties} -->
 
-#### ro.khungtask.timeout
-default value 12 minutes, [khungtask] maximum timelimit.
+The `llkd` responds to several Android properties (listed below).
 
-#### ro.llk.timeout_ms
-default 10 minutes, D or Z maximum timelimit, double this value and it sets
-the alarm watchdog for llkd.
+* Properties named `prop_ms` are in milliseconds.
+* Properties that use comma (,) separator for lists use a leading separator to
+  preserve the default entry, then add or subtract entries with optional plus
+  (+) and minus (-) prefixes respectively. For these lists, the string "false"
+  is synonymous with an empty list, and blank or missing entries resort to the
+  specified default value.
 
-#### ro.llk.D.timeout_ms
-default ro.llk.timeout_ms, D maximum timelimit.
+### ro.config.low_ram <!-- {:#ro-config-low-ram} -->
 
-#### ro.llk.Z.timeout_ms
-default ro.llk.timeout_ms, Z maximum timelimit.
+Device is configured with limited memory.
 
-#### ro.llk.stack.timeout_ms
-default ro.llk.timeout_ms,
-checking for persistent stack symbols maximum timelimit.
-Only active on userdebug or eng builds.
+### ro.debuggable <!-- {:#ro-debuggable} -->
 
-#### ro.llk.check_ms
-default 2 minutes samples of threads for D or Z.
+Device is configured for userdebug or eng build.
 
-#### ro.llk.stack
-default cma_alloc,__get_user_pages,bit_wait_io,wait_on_page_bit_killable
-comma separated list of kernel symbols.
-Look for kernel stack symbols that if ever persistently present can
-indicate a subsystem is locked up.
-Beware, check does not on purpose do forward scheduling ABA except by polling
-every ro.llk_check_ms over the period ro.llk.stack.timeout_ms, so stack symbol
-should be exceptionally rare and fleeting.
-One must be convinced that it is virtually *impossible* for symbol to show up
-persistently in all samples of the stack.
-Again, looks for a match for either " **symbol**+0x" or " **symbol**.cfi+0x"
-in stack expansion.
-Only available on userdebug or eng builds, limited privileges due to security
-concerns on user builds prevents this checking.
+### ro.llk.sysrq_t <!-- {:#ro-llk-sysrq-t} -->
 
-#### ro.llk.blacklist.process
-default 0,1,2 (kernel, init and [kthreadd]) plus process names
-init,[kthreadd],[khungtaskd],lmkd,llkd,watchdogd,
-[watchdogd],[watchdogd/0],...,[watchdogd/***get_nprocs**-1*].
-Do not watch these processes.  A process can be comm, cmdline or pid reference.
-NB: automated default here can be larger than the current maximum property
-size of 92.
-NB: false is a very very very unlikely process to want to blacklist.
+If property is "eng", the default is not `ro.config.low_ram` or `ro.debuggable`.
+If true, dump all threads (`sysrq t`).
 
-#### ro.llk.blacklist.parent
-default 0,2,adbd&[setsid] (kernel, [kthreadd] and adbd *only for zombie setsid*).
-Do not watch processes that have this parent.
-An ampersand (*&*) separator is used to specify that the parent is ignored
-only in combination with the target child process.
-Ampersand was selected because it is never part of a process name,
-however a setprop in the shell requires it to be escaped or quoted;
-init rc file where this is normally specified does not have this issue.
-A parent or target processes can be specified as comm, cmdline or pid reference.
+### ro.llk.enable <!-- {:#ro-llk-enable} -->
 
-#### ro.llk.blacklist.uid
-default *empty* or false, comma separated list of uid numbers or names.
-Do not watch processes that match this uid.
+Allow live-lock daemon to be enabled. Default is false.
 
-#### ro.llk.blacklist.process.stack
-default process names init,lmkd.llkd,llkd,keystore,ueventd,apexd,logd.
-This subset of processes are not monitored for live lock stack signatures.
-Also prevents the sepolicy violation associated with processes that block
-ptrace, as these can not be checked anyways.
-Only active on userdebug and eng builds.
+### llk.enable <!-- {:#llk-enable} -->
 
-Architectural Concerns
-----------------------
+Evaluated for eng builds. Default is `ro.llk.enable`.
 
-- built-in [khungtask] daemon is too generic and trips on driver code that
-  sits around in D state too much.  To switch to S instead makes the task(s)
-  killable, so the drivers should be able to resurrect them if needed.
-- Properties are limited to 92 characters.
-- Create kernel module and associated gTest to actually test panic.
-- Create gTest to test out blacklist (ro.llk.blacklist.*properties* generally
-  not be inputs).  Could require more test-only interfaces to libllkd.
-- Speed up gTest using something else than ro.llk.*properties*, which should
-  not be inputs as they should be baked into the product.
+### ro.khungtask.enable <!-- {:#ro-khungtask-enable} -->
+
+Allow `[khungtask]` daemon to be enabled. Default is false.
+
+### khungtask.enable <!-- {:#khungtask-enable} -->
+
+Evaluated for eng builds. Default is `ro.khungtask.enable`.
+
+### ro.llk.mlockall <!-- {:#ro-llk-mlockall} -->
+
+Enable call to `mlockall()`. Default is false.
+
+### ro.khungtask.timeout <!-- {:#ro-khungtask-timeout} -->
+
+`[khungtask]` maximum time limit. Default is 12 minutes.
+
+### ro.llk.timeout_ms <!-- {:#ro-llk-timeout-ms} -->
+
+D or Z maximum time limit. Default is 10 minutes. Double this value to set the
+alarm watchdog for `llkd`.
+
+### ro.llk.D.timeout_ms <!-- {:#ro-llk-D-timeout-ms} -->
+
+D maximum time limit. Default is `ro.llk.timeout_ms`.
+
+### ro.llk.Z.timeout_ms <!-- {:#ro-llk-Z-timeout-ms} -->
+
+Z maximum time limit. Default is `ro.llk.timeout_ms`.
+
+### ro.llk.stack.timeout_ms <!-- {:#ro-llk-stack-timeout-ms} -->
+
+Checks for persistent stack symbols maximum time limit. Default is
+`ro.llk.timeout_ms`. **Active only on userdebug or eng builds**.
+
+### ro.llk.check_ms <!-- {:#ro-llk-check-ms} -->
+
+Samples of threads for D or Z. Default is two minutes.
+
+### ro.llk.stack <!-- {:#ro-llk-stack} -->
+
+Checks for kernel stack symbols that if persistently present can indicate a
+subsystem is locked up. Default is
+`cma_alloc,__get_user_pages,bit_wait_io,wait_on_page_bit_killable`
+comma-separated list of kernel symbols. The check doesn't do forward scheduling
+ABA except by polling every `ro.llk_check_ms` over the period
+`ro.llk.stack.timeout_ms`, so stack symbols should be exceptionally rare and
+fleeting (it is highly unlikely for a symbol to show up persistently in all
+samples of the stack). Checks for a match for `" symbol+0x"` or
+`" symbol.cfi+0x"` in stack expansion. **Available only on userdebug or eng
+builds**; security concerns on user builds result in limited privileges that
+prevent this check.
+
+### ro.llk.ignorelist.process <!-- {:#ro-llk-ignorelist-process} -->
+
+The `llkd` does not watch the specified processes. Default is `0,1,2` (`kernel`,
+`init`, and `[kthreadd]`) plus process names
+`init,[kthreadd],[khungtaskd],lmkd,llkd,watchdogd, [watchdogd],[watchdogd/0],...,[watchdogd/get_nprocs-1]`.
+A process can be a `comm`, `cmdline`, or `pid` reference. An automated default
+can be larger than the current maximum property size of 92.
+
+Note: `false` is an extremely unlikely process to want to ignore.
+
+### ro.llk.ignorelist.parent <!-- {:#ro-llk-ignorelist-parent} -->
+
+The `llkd` does not watch processes that have the specified parent(s). Default
+is `0,2,adbd&[setsid]` (`kernel`, `[kthreadd]`, and `adbd` only for zombie
+`setsid`). An ampersand (&) separator specifies that the parent is ignored only
+in combination with the target child process. Ampersand was selected because it
+is never part of a process name; however, a `setprop` in the shell requires the
+ampersand to be escaped or quoted, although the `init rc` file where this is
+normally specified does not have this issue. A parent or target process can be a
+`comm`, `cmdline`, or `pid` reference.
+
+### ro.llk.ignorelist.uid <!-- {:#ro-llk-ignorelist-uid} -->
+
+The `llkd` does not watch processes that match the specified uid(s).
+Comma-separated list of uid numbers or names. Default is empty or false.
+
+### ro.llk.ignorelist.process.stack <!-- {:#ro-llk-ignorelist-process-stack} -->
+
+The `llkd` does not monitor the specified subset of processes for live lock stack
+signatures. Default is process names
+`init,lmkd.llkd,llkd,keystore,ueventd,apexd,logd`. Prevents the sepolicy
+violation associated with processes that block `ptrace` (as these can't be
+checked). **Active only on userdebug and eng builds**. For details on build
+types, refer to [Building Android](/setup/build/building#choose-a-target).
+
+## Architectural concerns <!-- {:#architectural-concerns} -->
+
+* Properties are limited to 92 characters.  However, this is not limited for
+  defaults defined in the `include/llkd.h` file in the sources.
+* The built-in `[khungtask]` daemon is too generic and trips on driver code that
+  sits around in D state too much. Switching drivers to sleep, or S state,
+  would make task(s) killable, and need to be resurrectable by drivers on an
+  as-need basis.
+
+## Library interface (optional) <!-- {:#library-interface-optional} -->
+
+You can optionally incorporate the `llkd` into another privileged daemon using
+the following C interface from the `libllkd` component:
+
+```
+#include "llkd.h"
+bool llkInit(const char* threadname) /* return true if enabled */
+unsigned llkCheckMillseconds(void)   /* ms to sleep for next check */
+```
+
+If a threadname is provided, a thread automatically spawns, otherwise the caller
+must call `llkCheckMilliseconds` in its main loop. The function returns the
+period of time before the next expected call to this handler.
diff --git a/llkd/include/llkd.h b/llkd/include/llkd.h
index 3586ca1..4b20a56 100644
--- a/llkd/include/llkd.h
+++ b/llkd/include/llkd.h
@@ -30,37 +30,37 @@
 unsigned llkCheckMilliseconds(void);
 
 /* clang-format off */
-#define LLK_ENABLE_WRITEABLE_PROPERTY  "llk.enable"
-#define LLK_ENABLE_PROPERTY            "ro." LLK_ENABLE_WRITEABLE_PROPERTY
-#define LLK_ENABLE_DEFAULT             false /* "eng" and userdebug true */
-#define KHT_ENABLE_WRITEABLE_PROPERTY  "khungtask.enable"
-#define KHT_ENABLE_PROPERTY            "ro." KHT_ENABLE_WRITEABLE_PROPERTY
-#define LLK_ENABLE_SYSRQ_T_PROPERTY    "ro.llk.sysrq_t"
-#define LLK_ENABLE_SYSRQ_T_DEFAULT     true
-#define LLK_MLOCKALL_PROPERTY          "ro.llk.mlockall"
-#define LLK_MLOCKALL_DEFAULT           true
-#define LLK_KILLTEST_PROPERTY          "ro.llk.killtest"
-#define LLK_KILLTEST_DEFAULT           true
-#define LLK_TIMEOUT_MS_PROPERTY        "ro.llk.timeout_ms"
-#define KHT_TIMEOUT_PROPERTY           "ro.khungtask.timeout"
-#define LLK_D_TIMEOUT_MS_PROPERTY      "ro.llk.D.timeout_ms"
-#define LLK_Z_TIMEOUT_MS_PROPERTY      "ro.llk.Z.timeout_ms"
-#define LLK_STACK_TIMEOUT_MS_PROPERTY  "ro.llk.stack.timeout_ms"
-#define LLK_CHECK_MS_PROPERTY          "ro.llk.check_ms"
+#define LLK_ENABLE_WRITEABLE_PROPERTY   "llk.enable"
+#define LLK_ENABLE_PROPERTY             "ro." LLK_ENABLE_WRITEABLE_PROPERTY
+#define LLK_ENABLE_DEFAULT              false /* "eng" and userdebug true */
+#define KHT_ENABLE_WRITEABLE_PROPERTY   "khungtask.enable"
+#define KHT_ENABLE_PROPERTY             "ro." KHT_ENABLE_WRITEABLE_PROPERTY
+#define LLK_ENABLE_SYSRQ_T_PROPERTY     "ro.llk.sysrq_t"
+#define LLK_ENABLE_SYSRQ_T_DEFAULT      true
+#define LLK_MLOCKALL_PROPERTY           "ro.llk.mlockall"
+#define LLK_MLOCKALL_DEFAULT            true
+#define LLK_KILLTEST_PROPERTY           "ro.llk.killtest"
+#define LLK_KILLTEST_DEFAULT            true
+#define LLK_TIMEOUT_MS_PROPERTY         "ro.llk.timeout_ms"
+#define KHT_TIMEOUT_PROPERTY            "ro.khungtask.timeout"
+#define LLK_D_TIMEOUT_MS_PROPERTY       "ro.llk.D.timeout_ms"
+#define LLK_Z_TIMEOUT_MS_PROPERTY       "ro.llk.Z.timeout_ms"
+#define LLK_STACK_TIMEOUT_MS_PROPERTY   "ro.llk.stack.timeout_ms"
+#define LLK_CHECK_MS_PROPERTY           "ro.llk.check_ms"
 /* LLK_CHECK_MS_DEFAULT = actual timeout_ms / LLK_CHECKS_PER_TIMEOUT_DEFAULT */
-#define LLK_CHECKS_PER_TIMEOUT_DEFAULT 5
-#define LLK_CHECK_STACK_PROPERTY       "ro.llk.stack"
-#define LLK_CHECK_STACK_DEFAULT        \
+#define LLK_CHECKS_PER_TIMEOUT_DEFAULT  5
+#define LLK_CHECK_STACK_PROPERTY        "ro.llk.stack"
+#define LLK_CHECK_STACK_DEFAULT         \
     "cma_alloc,__get_user_pages,bit_wait_io,wait_on_page_bit_killable"
-#define LLK_BLACKLIST_PROCESS_PROPERTY "ro.llk.blacklist.process"
-#define LLK_BLACKLIST_PROCESS_DEFAULT  \
+#define LLK_IGNORELIST_PROCESS_PROPERTY "ro.llk.ignorelist.process"
+#define LLK_IGNORELIST_PROCESS_DEFAULT  \
     "0,1,2,init,[kthreadd],[khungtaskd],lmkd,llkd,watchdogd,[watchdogd],[watchdogd/0]"
-#define LLK_BLACKLIST_PARENT_PROPERTY  "ro.llk.blacklist.parent"
-#define LLK_BLACKLIST_PARENT_DEFAULT   "0,2,[kthreadd],adbd&[setsid]"
-#define LLK_BLACKLIST_UID_PROPERTY     "ro.llk.blacklist.uid"
-#define LLK_BLACKLIST_UID_DEFAULT      ""
-#define LLK_BLACKLIST_STACK_PROPERTY   "ro.llk.blacklist.process.stack"
-#define LLK_BLACKLIST_STACK_DEFAULT    "init,lmkd.llkd,llkd,keystore,ueventd,apexd"
+#define LLK_IGNORELIST_PARENT_PROPERTY  "ro.llk.ignorelist.parent"
+#define LLK_IGNORELIST_PARENT_DEFAULT   "0,2,[kthreadd],adbd&[setsid]"
+#define LLK_IGNORELIST_UID_PROPERTY     "ro.llk.ignorelist.uid"
+#define LLK_IGNORELIST_UID_DEFAULT      ""
+#define LLK_IGNORELIST_STACK_PROPERTY   "ro.llk.ignorelist.process.stack"
+#define LLK_IGNORELIST_STACK_DEFAULT    "init,lmkd.llkd,llkd,keystore,ueventd,apexd"
 /* clang-format on */
 
 __END_DECLS
diff --git a/llkd/libllkd.cpp b/llkd/libllkd.cpp
index b26ad4d..a24d900 100644
--- a/llkd/libllkd.cpp
+++ b/llkd/libllkd.cpp
@@ -41,6 +41,7 @@
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
+#include <vector>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
@@ -97,26 +98,26 @@
 std::unordered_set<std::string> llkCheckStackSymbols;
 #endif
 
-// Blacklist variables, initialized with comma separated lists of high false
+// Ignorelist variables, initialized with comma separated lists of high false
 // positive and/or dangerous references, e.g. without self restart, for pid,
 // ppid, name and uid:
 
 // list of pids, or tids or names to skip. kernel pid (0), init pid (1),
 // [kthreadd] pid (2), ourselves, "init", "[kthreadd]", "lmkd", "llkd" or
 // combinations of watchdogd in kernel and user space.
-std::unordered_set<std::string> llkBlacklistProcess;
+std::unordered_set<std::string> llkIgnorelistProcess;
 // list of parent pids, comm or cmdline names to skip. default:
 // kernel pid (0), [kthreadd] (2), or ourselves, enforced and implied
-std::unordered_set<std::string> llkBlacklistParent;
+std::unordered_set<std::string> llkIgnorelistParent;
 // list of parent and target processes to skip. default:
 // adbd *and* [setsid]
-std::unordered_map<std::string, std::unordered_set<std::string>> llkBlacklistParentAndChild;
+std::unordered_map<std::string, std::unordered_set<std::string>> llkIgnorelistParentAndChild;
 // list of uids, and uid names, to skip, default nothing
-std::unordered_set<std::string> llkBlacklistUid;
+std::unordered_set<std::string> llkIgnorelistUid;
 #ifdef __PTRACE_ENABLED__
 // list of names to skip stack checking. "init", "lmkd", "llkd", "keystore" or
 // "logd" (if not userdebug).
-std::unordered_set<std::string> llkBlacklistStack;
+std::unordered_set<std::string> llkIgnorelistStack;
 #endif
 
 class dir {
@@ -304,10 +305,13 @@
     bool cmdlineValid;             // cmdline has been cached
     bool updated;                  // cleared before monitoring pass.
     bool killed;                   // sent a kill to this thread, next panic...
+    bool frozen;                   // process is in frozen cgroup.
 
     void setComm(const char* _comm) { strncpy(comm + 1, _comm, sizeof(comm) - 2); }
 
-    proc(pid_t tid, pid_t pid, pid_t ppid, const char* _comm, int time, char state)
+    void setFrozen(bool _frozen) { frozen = _frozen; }
+
+    proc(pid_t tid, pid_t pid, pid_t ppid, const char* _comm, int time, char state, bool frozen)
         : tid(tid),
           schedUpdate(0),
           nrSwitches(0),
@@ -327,7 +331,8 @@
           exeMissingValid(false),
           cmdlineValid(false),
           updated(true),
-          killed(!llkTestWithKill) {
+          killed(!llkTestWithKill),
+          frozen(frozen) {
         memset(comm, '\0', sizeof(comm));
         setComm(_comm);
     }
@@ -373,6 +378,8 @@
         return uid;
     }
 
+    bool isFrozen() { return frozen; }
+
     void reset(void) {  // reset cache, if we detected pid rollover
         uid = -1;
         state = '?';
@@ -592,8 +599,9 @@
     tids.erase(tid);
 }
 
-proc* llkTidAlloc(pid_t tid, pid_t pid, pid_t ppid, const char* comm, int time, char state) {
-    auto it = tids.emplace(std::make_pair(tid, proc(tid, pid, ppid, comm, time, state)));
+proc* llkTidAlloc(pid_t tid, pid_t pid, pid_t ppid, const char* comm, int time, char state,
+                  bool frozen) {
+    auto it = tids.emplace(std::make_pair(tid, proc(tid, pid, ppid, comm, time, state, frozen)));
     return &it.first->second;
 }
 
@@ -618,9 +626,9 @@
     return flag ? "true" : "false";
 }
 
-std::string llkFormat(const std::unordered_set<std::string>& blacklist) {
+std::string llkFormat(const std::unordered_set<std::string>& ignorelist) {
     std::string ret;
-    for (const auto& entry : blacklist) {
+    for (const auto& entry : ignorelist) {
         if (!ret.empty()) ret += ",";
         ret += entry;
     }
@@ -628,10 +636,10 @@
 }
 
 std::string llkFormat(
-        const std::unordered_map<std::string, std::unordered_set<std::string>>& blacklist,
+        const std::unordered_map<std::string, std::unordered_set<std::string>>& ignorelist,
         bool leading_comma = false) {
     std::string ret;
-    for (const auto& entry : blacklist) {
+    for (const auto& entry : ignorelist) {
         for (const auto& target : entry.second) {
             if (leading_comma || !ret.empty()) ret += ",";
             ret += entry.first + "&" + target;
@@ -691,61 +699,61 @@
 }
 
 bool llkSkipName(const std::string& name,
-                 const std::unordered_set<std::string>& blacklist = llkBlacklistProcess) {
-    if (name.empty() || blacklist.empty()) return false;
+                 const std::unordered_set<std::string>& ignorelist = llkIgnorelistProcess) {
+    if (name.empty() || ignorelist.empty()) return false;
 
-    return blacklist.find(name) != blacklist.end();
+    return ignorelist.find(name) != ignorelist.end();
 }
 
 bool llkSkipProc(proc* procp,
-                 const std::unordered_set<std::string>& blacklist = llkBlacklistProcess) {
+                 const std::unordered_set<std::string>& ignorelist = llkIgnorelistProcess) {
     if (!procp) return false;
-    if (llkSkipName(std::to_string(procp->pid), blacklist)) return true;
-    if (llkSkipName(procp->getComm(), blacklist)) return true;
-    if (llkSkipName(procp->getCmdline(), blacklist)) return true;
-    if (llkSkipName(android::base::Basename(procp->getCmdline()), blacklist)) return true;
+    if (llkSkipName(std::to_string(procp->pid), ignorelist)) return true;
+    if (llkSkipName(procp->getComm(), ignorelist)) return true;
+    if (llkSkipName(procp->getCmdline(), ignorelist)) return true;
+    if (llkSkipName(android::base::Basename(procp->getCmdline()), ignorelist)) return true;
     return false;
 }
 
 const std::unordered_set<std::string>& llkSkipName(
         const std::string& name,
-        const std::unordered_map<std::string, std::unordered_set<std::string>>& blacklist) {
+        const std::unordered_map<std::string, std::unordered_set<std::string>>& ignorelist) {
     static const std::unordered_set<std::string> empty;
-    if (name.empty() || blacklist.empty()) return empty;
-    auto found = blacklist.find(name);
-    if (found == blacklist.end()) return empty;
+    if (name.empty() || ignorelist.empty()) return empty;
+    auto found = ignorelist.find(name);
+    if (found == ignorelist.end()) return empty;
     return found->second;
 }
 
 bool llkSkipPproc(proc* pprocp, proc* procp,
                   const std::unordered_map<std::string, std::unordered_set<std::string>>&
-                          blacklist = llkBlacklistParentAndChild) {
-    if (!pprocp || !procp || blacklist.empty()) return false;
-    if (llkSkipProc(procp, llkSkipName(std::to_string(pprocp->pid), blacklist))) return true;
-    if (llkSkipProc(procp, llkSkipName(pprocp->getComm(), blacklist))) return true;
-    if (llkSkipProc(procp, llkSkipName(pprocp->getCmdline(), blacklist))) return true;
+                          ignorelist = llkIgnorelistParentAndChild) {
+    if (!pprocp || !procp || ignorelist.empty()) return false;
+    if (llkSkipProc(procp, llkSkipName(std::to_string(pprocp->pid), ignorelist))) return true;
+    if (llkSkipProc(procp, llkSkipName(pprocp->getComm(), ignorelist))) return true;
+    if (llkSkipProc(procp, llkSkipName(pprocp->getCmdline(), ignorelist))) return true;
     return llkSkipProc(procp,
-                       llkSkipName(android::base::Basename(pprocp->getCmdline()), blacklist));
+                       llkSkipName(android::base::Basename(pprocp->getCmdline()), ignorelist));
 }
 
 bool llkSkipPid(pid_t pid) {
-    return llkSkipName(std::to_string(pid), llkBlacklistProcess);
+    return llkSkipName(std::to_string(pid), llkIgnorelistProcess);
 }
 
 bool llkSkipPpid(pid_t ppid) {
-    return llkSkipName(std::to_string(ppid), llkBlacklistParent);
+    return llkSkipName(std::to_string(ppid), llkIgnorelistParent);
 }
 
 bool llkSkipUid(uid_t uid) {
     // Match by number?
-    if (llkSkipName(std::to_string(uid), llkBlacklistUid)) {
+    if (llkSkipName(std::to_string(uid), llkIgnorelistUid)) {
         return true;
     }
 
     // Match by name?
     auto pwd = ::getpwuid(uid);
     return (pwd != nullptr) && __predict_true(pwd->pw_name != nullptr) &&
-           __predict_true(pwd->pw_name[0] != '\0') && llkSkipName(pwd->pw_name, llkBlacklistUid);
+           __predict_true(pwd->pw_name[0] != '\0') && llkSkipName(pwd->pw_name, llkIgnorelistUid);
 }
 
 bool getValidTidDir(dirent* dp, std::string* piddir) {
@@ -803,7 +811,7 @@
     }
 
     // Don't check process that are known to block ptrace, save sepolicy noise.
-    if (llkSkipProc(procp, llkBlacklistStack)) return false;
+    if (llkSkipProc(procp, llkIgnorelistStack)) return false;
     auto kernel_stack = ReadFile(piddir + "/stack");
     if (kernel_stack.empty()) {
         LOG(VERBOSE) << piddir << "/stack empty comm=" << procp->getComm()
@@ -909,12 +917,12 @@
               << LLK_CHECK_MS_PROPERTY "=" << llkFormat(llkCheckMs) << "\n"
 #ifdef __PTRACE_ENABLED__
               << LLK_CHECK_STACK_PROPERTY "=" << llkFormat(llkCheckStackSymbols) << "\n"
-              << LLK_BLACKLIST_STACK_PROPERTY "=" << llkFormat(llkBlacklistStack) << "\n"
+              << LLK_IGNORELIST_STACK_PROPERTY "=" << llkFormat(llkIgnorelistStack) << "\n"
 #endif
-              << LLK_BLACKLIST_PROCESS_PROPERTY "=" << llkFormat(llkBlacklistProcess) << "\n"
-              << LLK_BLACKLIST_PARENT_PROPERTY "=" << llkFormat(llkBlacklistParent)
-              << llkFormat(llkBlacklistParentAndChild, true) << "\n"
-              << LLK_BLACKLIST_UID_PROPERTY "=" << llkFormat(llkBlacklistUid);
+              << LLK_IGNORELIST_PROCESS_PROPERTY "=" << llkFormat(llkIgnorelistProcess) << "\n"
+              << LLK_IGNORELIST_PARENT_PROPERTY "=" << llkFormat(llkIgnorelistParent)
+              << llkFormat(llkIgnorelistParentAndChild, true) << "\n"
+              << LLK_IGNORELIST_UID_PROPERTY "=" << llkFormat(llkIgnorelistUid);
 }
 
 void* llkThread(void* obj) {
@@ -924,14 +932,14 @@
 
     std::string name = std::to_string(::gettid());
     if (!llkSkipName(name)) {
-        llkBlacklistProcess.emplace(name);
+        llkIgnorelistProcess.emplace(name);
     }
     name = static_cast<const char*>(obj);
     prctl(PR_SET_NAME, name.c_str());
     if (__predict_false(!llkSkipName(name))) {
-        llkBlacklistProcess.insert(name);
+        llkIgnorelistProcess.insert(name);
     }
-    // No longer modifying llkBlacklistProcess.
+    // No longer modifying llkIgnorelistProcess.
     llkRunning = true;
     llkLogConfig();
     while (llkRunning) {
@@ -1039,12 +1047,18 @@
                 continue;
             }
 
+            // Get the process cgroup
+            auto cgroup = ReadFile(piddir + "/cgroup");
+            auto frozen = cgroup.find(":freezer:/frozen") != std::string::npos;
+
             auto procp = llkTidLookup(tid);
             if (procp == nullptr) {
-                procp = llkTidAlloc(tid, pid, ppid, pdir, utime + stime, state);
+                procp = llkTidAlloc(tid, pid, ppid, pdir, utime + stime, state, frozen);
             } else {
                 // comm can change ...
                 procp->setComm(pdir);
+                // frozen can change, too...
+                procp->setFrozen(frozen);
                 procp->updated = true;
                 // pid/ppid/tid wrap?
                 if (((procp->update != prevUpdate) && (procp->update != llkUpdate)) ||
@@ -1084,6 +1098,9 @@
             if ((tid == myTid) || llkSkipPid(tid)) {
                 continue;
             }
+            if (procp->isFrozen()) {
+                break;
+            }
             if (llkSkipPpid(ppid)) {
                 break;
             }
@@ -1101,16 +1118,16 @@
 
             auto pprocp = llkTidLookup(ppid);
             if (pprocp == nullptr) {
-                pprocp = llkTidAlloc(ppid, ppid, 0, "", 0, '?');
+                pprocp = llkTidAlloc(ppid, ppid, 0, "", 0, '?', false);
             }
             if (pprocp) {
                 if (llkSkipPproc(pprocp, procp)) break;
-                if (llkSkipProc(pprocp, llkBlacklistParent)) break;
+                if (llkSkipProc(pprocp, llkIgnorelistParent)) break;
             } else {
-                if (llkSkipName(std::to_string(ppid), llkBlacklistParent)) break;
+                if (llkSkipName(std::to_string(ppid), llkIgnorelistParent)) break;
             }
 
-            if ((llkBlacklistUid.size() != 0) && llkSkipUid(procp->getUid())) {
+            if ((llkIgnorelistUid.size() != 0) && llkSkipUid(procp->getUid())) {
                 continue;
             }
 
@@ -1188,9 +1205,19 @@
                 }
             }
             // We are here because we have confirmed kernel live-lock
+            std::vector<std::string> threads;
+            auto taskdir = procdir + std::to_string(tid) + "/task/";
+            dir taskDirectory(taskdir);
+            for (auto tp = taskDirectory.read(); tp != nullptr; tp = taskDirectory.read()) {
+                std::string piddir;
+                if (getValidTidDir(tp, &piddir))
+                    threads.push_back(android::base::Basename(piddir));
+            }
             const auto message = state + " "s + llkFormat(procp->count) + " " +
                                  std::to_string(ppid) + "->" + std::to_string(pid) + "->" +
-                                 std::to_string(tid) + " " + process_comm + " [panic]";
+                                 std::to_string(tid) + " " + process_comm + " [panic]\n" +
+                                 "  thread group: {" + android::base::Join(threads, ",") +
+                                 "}";
             llkPanicKernel(dump, tid,
                            (state == 'Z') ? "zombie" : (state == 'D') ? "driver" : "sleeping",
                            message);
@@ -1293,29 +1320,29 @@
     if (debuggable) {
         llkCheckStackSymbols = llkSplit(LLK_CHECK_STACK_PROPERTY, LLK_CHECK_STACK_DEFAULT);
     }
-    std::string defaultBlacklistStack(LLK_BLACKLIST_STACK_DEFAULT);
-    if (!debuggable) defaultBlacklistStack += ",logd,/system/bin/logd";
-    llkBlacklistStack = llkSplit(LLK_BLACKLIST_STACK_PROPERTY, defaultBlacklistStack);
+    std::string defaultIgnorelistStack(LLK_IGNORELIST_STACK_DEFAULT);
+    if (!debuggable) defaultIgnorelistStack += ",logd,/system/bin/logd";
+    llkIgnorelistStack = llkSplit(LLK_IGNORELIST_STACK_PROPERTY, defaultIgnorelistStack);
 #endif
-    std::string defaultBlacklistProcess(
-        std::to_string(kernelPid) + "," + std::to_string(initPid) + "," +
-        std::to_string(kthreaddPid) + "," + std::to_string(::getpid()) + "," +
-        std::to_string(::gettid()) + "," LLK_BLACKLIST_PROCESS_DEFAULT);
+    std::string defaultIgnorelistProcess(
+            std::to_string(kernelPid) + "," + std::to_string(initPid) + "," +
+            std::to_string(kthreaddPid) + "," + std::to_string(::getpid()) + "," +
+            std::to_string(::gettid()) + "," LLK_IGNORELIST_PROCESS_DEFAULT);
     if (threadname) {
-        defaultBlacklistProcess += ","s + threadname;
+        defaultIgnorelistProcess += ","s + threadname;
     }
     for (int cpu = 1; cpu < get_nprocs_conf(); ++cpu) {
-        defaultBlacklistProcess += ",[watchdog/" + std::to_string(cpu) + "]";
+        defaultIgnorelistProcess += ",[watchdog/" + std::to_string(cpu) + "]";
     }
-    llkBlacklistProcess = llkSplit(LLK_BLACKLIST_PROCESS_PROPERTY, defaultBlacklistProcess);
+    llkIgnorelistProcess = llkSplit(LLK_IGNORELIST_PROCESS_PROPERTY, defaultIgnorelistProcess);
     if (!llkSkipName("[khungtaskd]")) {  // ALWAYS ignore as special
-        llkBlacklistProcess.emplace("[khungtaskd]");
+        llkIgnorelistProcess.emplace("[khungtaskd]");
     }
-    llkBlacklistParent = llkSplit(LLK_BLACKLIST_PARENT_PROPERTY,
-                                  std::to_string(kernelPid) + "," + std::to_string(kthreaddPid) +
-                                          "," LLK_BLACKLIST_PARENT_DEFAULT);
-    // derive llkBlacklistParentAndChild by moving entries with '&' from above
-    for (auto it = llkBlacklistParent.begin(); it != llkBlacklistParent.end();) {
+    llkIgnorelistParent = llkSplit(LLK_IGNORELIST_PARENT_PROPERTY,
+                                   std::to_string(kernelPid) + "," + std::to_string(kthreaddPid) +
+                                           "," LLK_IGNORELIST_PARENT_DEFAULT);
+    // derive llkIgnorelistParentAndChild by moving entries with '&' from above
+    for (auto it = llkIgnorelistParent.begin(); it != llkIgnorelistParent.end();) {
         auto pos = it->find('&');
         if (pos == std::string::npos) {
             ++it;
@@ -1323,18 +1350,18 @@
         }
         auto parent = it->substr(0, pos);
         auto child = it->substr(pos + 1);
-        it = llkBlacklistParent.erase(it);
+        it = llkIgnorelistParent.erase(it);
 
-        auto found = llkBlacklistParentAndChild.find(parent);
-        if (found == llkBlacklistParentAndChild.end()) {
-            llkBlacklistParentAndChild.emplace(std::make_pair(
+        auto found = llkIgnorelistParentAndChild.find(parent);
+        if (found == llkIgnorelistParentAndChild.end()) {
+            llkIgnorelistParentAndChild.emplace(std::make_pair(
                     std::move(parent), std::unordered_set<std::string>({std::move(child)})));
         } else {
             found->second.emplace(std::move(child));
         }
     }
 
-    llkBlacklistUid = llkSplit(LLK_BLACKLIST_UID_PROPERTY, LLK_BLACKLIST_UID_DEFAULT);
+    llkIgnorelistUid = llkSplit(LLK_IGNORELIST_UID_PROPERTY, LLK_IGNORELIST_UID_DEFAULT);
 
     // internal watchdog
     ::signal(SIGALRM, llkAlarmHandler);
diff --git a/llkd/llkd-debuggable.rc b/llkd/llkd-debuggable.rc
index 724cb5e..4b11b1c 100644
--- a/llkd/llkd-debuggable.rc
+++ b/llkd/llkd-debuggable.rc
@@ -13,7 +13,7 @@
     disabled
     user llkd
     group llkd readproc
-    capabilities KILL IPC_LOCK SYS_PTRACE DAC_OVERRIDE
+    capabilities KILL IPC_LOCK SYS_PTRACE DAC_OVERRIDE SYS_ADMIN
     file /dev/kmsg w
     file /proc/sysrq-trigger w
     writepid /dev/cpuset/system-background/tasks
diff --git a/llkd/tests/llkd_test.cpp b/llkd/tests/llkd_test.cpp
index 96079cc..475512c 100644
--- a/llkd/tests/llkd_test.cpp
+++ b/llkd/tests/llkd_test.cpp
@@ -89,7 +89,8 @@
         rest();
         std::string setprop("setprop ");
         // Manually check that SyS_openat is _added_ to the list when restarted
-        execute((setprop + LLK_CHECK_STACK_PROPERTY + " ,SyS_openat").c_str());
+        // 4.19+ kernels report __arm64_sys_openat b/147486902
+        execute((setprop + LLK_CHECK_STACK_PROPERTY + " ,SyS_openat,__arm64_sys_openat").c_str());
         rest();
         execute((setprop + LLK_ENABLE_WRITEABLE_PROPERTY + " false").c_str());
         rest();
diff --git a/lmkd/Android.bp b/lmkd/Android.bp
deleted file mode 100644
index 4c5ca03..0000000
--- a/lmkd/Android.bp
+++ /dev/null
@@ -1,53 +0,0 @@
-cc_binary {
-    name: "lmkd",
-
-    srcs: ["lmkd.c"],
-    shared_libs: [
-        "libcutils",
-        "liblog",
-        "libprocessgroup",
-        "libpsi",
-    ],
-    static_libs: [
-        "libstatslogc",
-        "libstatssocket",
-    ],
-    local_include_dirs: ["include"],
-    cflags: ["-Werror", "-DLMKD_TRACE_KILLS"],
-    init_rc: ["lmkd.rc"],
-    product_variables: {
-        use_lmkd_stats_log: {
-            cflags: [
-                "-DLMKD_LOG_STATS"
-            ],
-        },
-    },
-    logtags: ["event.logtags"],
-}
-
-cc_library_static {
-    name: "libstatslogc",
-    srcs: ["statslog.c"],
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-    shared_libs: [
-        "liblog",
-    ],
-    static_libs: ["libstatssocket",],
-}
-
-cc_library_static {
-    name: "liblmkd_utils",
-    srcs: ["liblmkd_utils.c"],
-    shared_libs: [
-        "libcutils",
-    ],
-    export_include_dirs: ["include"],
-    cppflags: [
-        "-g",
-        "-Wall",
-        "-Werror",
-    ]
-}
diff --git a/lmkd/OWNERS b/lmkd/OWNERS
deleted file mode 100644
index b15bb48..0000000
--- a/lmkd/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-surenb@google.com
diff --git a/lmkd/README.md b/lmkd/README.md
deleted file mode 100644
index 656a6ea..0000000
--- a/lmkd/README.md
+++ /dev/null
@@ -1,65 +0,0 @@
-Android Low Memory Killer Daemon
-================================
-
-
-Introduction
-------------
-
-Android Low Memory Killer Daemon (lmkd) is a process monitoring memory
-state of a running Android system and reacting to high memory pressure
-by killing the least essential process(es) to keep system performing
-at acceptable levels.
-
-
-Background
-----------
-
-Historically on Android systems memory monitoring and killing of
-non-essential processes was handled by a kernel lowmemorykiller driver.
-Since Linux Kernel 4.12 the lowmemorykiller driver has been removed and
-instead userspace lmkd daemon performs these tasks.
-
-
-Android Properties
-------------------
-
-lmkd can be configured on a particular system using the following Android
-properties:
-
-  ro.config.low_ram:         choose between low-memory vs high-performance
-                             device. Default = false.
-
-  ro.lmk.use_minfree_levels: use free memory and file cache thresholds for
-                             making decisions when to kill. This mode works
-                             the same way kernel lowmemorykiller driver used
-                             to work. Default = false
-
-  ro.lmk.low:                min oom_adj score for processes eligible to be
-                             killed at low vmpressure level. Default = 1001
-                             (disabled)
-
-  ro.lmk.medium:             min oom_adj score for processes eligible to be
-                             killed at medium vmpressure level. Default = 800
-                             (non-essential processes)
-
-  ro.lmk.critical:           min oom_adj score for processes eligible to be
-                             killed at critical vmpressure level. Default = 0
-                             (all processes)
-
-  ro.lmk.critical_upgrade:   enables upgrade to critical level. Default = false
-
-  ro.lmk.upgrade_pressure:   max mem_pressure at which level will be upgraded
-                             because system is swapping too much. Default = 100
-                             (disabled)
-
-  ro.lmk.downgrade_pressure: min mem_pressure at which vmpressure event will
-                             be ignored because enough free memory is still
-                             available. Default = 100 (disabled)
-
-  ro.lmk.kill_heaviest_task: kill heaviest eligible task (best decision) vs.
-                             any eligible task (fast decision). Default = false
-
-  ro.lmk.kill_timeout_ms:    duration in ms after a kill when no additional
-                             kill will be done, Default = 0 (disabled)
-
-  ro.lmk.debug:              enable lmkd debug logs, Default = false
diff --git a/lmkd/event.logtags b/lmkd/event.logtags
deleted file mode 100644
index 065c6db..0000000
--- a/lmkd/event.logtags
+++ /dev/null
@@ -1,38 +0,0 @@
-# The entries in this file map a sparse set of log tag numbers to tag names.
-# This is installed on the device, in /system/etc, and parsed by logcat.
-#
-# Tag numbers are decimal integers, from 0 to 2^31.  (Let's leave the
-# negative values alone for now.)
-#
-# Tag names are one or more ASCII letters and numbers or underscores, i.e.
-# "[A-Z][a-z][0-9]_".  Do not include spaces or punctuation (the former
-# impacts log readability, the latter makes regex searches more annoying).
-#
-# Tag numbers and names are separated by whitespace.  Blank lines and lines
-# starting with '#' are ignored.
-#
-# Optionally, after the tag names can be put a description for the value(s)
-# of the tag. Description are in the format
-#    (<name>|data type[|data unit])
-# Multiple values are separated by commas.
-#
-# The data type is a number from the following values:
-# 1: int
-# 2: long
-# 3: string
-# 4: list
-#
-# The data unit is a number taken from the following list:
-# 1: Number of objects
-# 2: Number of bytes
-# 3: Number of milliseconds
-# 4: Number of allocations
-# 5: Id
-# 6: Percent
-# s: Number of seconds (monotonic time)
-# Default value for data of type int/long is 2 (bytes).
-#
-# TODO: generate ".java" and ".h" files with integer constants from this file.
-
-# for meminfo logs
-10195355 meminfo (MemFree|1),(Cached|1),(SwapCached|1),(Buffers|1),(Shmem|1),(Unevictable|1),(SwapTotal|1),(SwapFree|1),(ActiveAnon|1),(InactiveAnon|1),(ActiveFile|1),(InactiveFile|1),(SReclaimable|1),(SUnreclaim|1),(KernelStack|1),(PageTables|1),(ION_heap|1),(ION_heap_pool|1),(CmaFree|1)
diff --git a/lmkd/include/liblmkd_utils.h b/lmkd/include/liblmkd_utils.h
deleted file mode 100644
index 72e3f4a..0000000
--- a/lmkd/include/liblmkd_utils.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- *  Copyright 2018 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#ifndef _LIBLMKD_UTILS_H_
-#define _LIBLMKD_UTILS_H_
-
-#include <sys/cdefs.h>
-#include <sys/types.h>
-
-#include <lmkd.h>
-
-__BEGIN_DECLS
-
-/*
- * Connects to lmkd process and returns socket handle.
- * On success returns socket handle.
- * On error, -1 is returned, and errno is set appropriately.
- */
-int lmkd_connect();
-
-/*
- * Registers a process with lmkd and sets its oomadj score.
- * On success returns 0.
- * On error, -1 is returned.
- * In the case of error errno is set appropriately.
- */
-int lmkd_register_proc(int sock, struct lmk_procprio *params);
-
-/*
- * Creates memcg directory for given process.
- * On success returns 0.
- * -1 is returned if path creation failed.
- * -2 is returned if tasks file open operation failed.
- * -3 is returned if tasks file write operation failed.
- * In the case of error errno is set appropriately.
- */
-int create_memcg(uid_t uid, pid_t pid);
-
-__END_DECLS
-
-#endif /* _LIBLMKD_UTILS_H_ */
diff --git a/lmkd/include/lmkd.h b/lmkd/include/lmkd.h
deleted file mode 100644
index 59377dd..0000000
--- a/lmkd/include/lmkd.h
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- *  Copyright 2018 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#ifndef _LMKD_H_
-#define _LMKD_H_
-
-#include <arpa/inet.h>
-#include <sys/cdefs.h>
-#include <sys/types.h>
-
-__BEGIN_DECLS
-
-/*
- * Supported LMKD commands
- */
-enum lmk_cmd {
-    LMK_TARGET = 0,  /* Associate minfree with oom_adj_score */
-    LMK_PROCPRIO,    /* Register a process and set its oom_adj_score */
-    LMK_PROCREMOVE,  /* Unregister a process */
-    LMK_PROCPURGE,   /* Purge all registered processes */
-    LMK_GETKILLCNT,  /* Get number of kills */
-};
-
-/*
- * Max number of targets in LMK_TARGET command.
- */
-#define MAX_TARGETS 6
-
-/*
- * Max packet length in bytes.
- * Longest packet is LMK_TARGET followed by MAX_TARGETS
- * of minfree and oom_adj_score values
- */
-#define CTRL_PACKET_MAX_SIZE (sizeof(int) * (MAX_TARGETS * 2 + 1))
-
-/* LMKD packet - first int is lmk_cmd followed by payload */
-typedef int LMKD_CTRL_PACKET[CTRL_PACKET_MAX_SIZE / sizeof(int)];
-
-/* Get LMKD packet command */
-static inline enum lmk_cmd lmkd_pack_get_cmd(LMKD_CTRL_PACKET pack) {
-    return (enum lmk_cmd)ntohl(pack[0]);
-}
-
-/* LMK_TARGET packet payload */
-struct lmk_target {
-    int minfree;
-    int oom_adj_score;
-};
-
-/*
- * For LMK_TARGET packet get target_idx-th payload.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline void lmkd_pack_get_target(LMKD_CTRL_PACKET packet, int target_idx,
-                                        struct lmk_target* target) {
-    target->minfree = ntohl(packet[target_idx * 2 + 1]);
-    target->oom_adj_score = ntohl(packet[target_idx * 2 + 2]);
-}
-
-/*
- * Prepare LMK_TARGET packet and return packet size in bytes.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline size_t lmkd_pack_set_target(LMKD_CTRL_PACKET packet, struct lmk_target* targets,
-                                          size_t target_cnt) {
-    int idx = 0;
-    packet[idx++] = htonl(LMK_TARGET);
-    while (target_cnt) {
-        packet[idx++] = htonl(targets->minfree);
-        packet[idx++] = htonl(targets->oom_adj_score);
-        targets++;
-        target_cnt--;
-    }
-    return idx * sizeof(int);
-}
-
-/* LMK_PROCPRIO packet payload */
-struct lmk_procprio {
-    pid_t pid;
-    uid_t uid;
-    int oomadj;
-};
-
-/*
- * For LMK_PROCPRIO packet get its payload.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline void lmkd_pack_get_procprio(LMKD_CTRL_PACKET packet, struct lmk_procprio* params) {
-    params->pid = (pid_t)ntohl(packet[1]);
-    params->uid = (uid_t)ntohl(packet[2]);
-    params->oomadj = ntohl(packet[3]);
-}
-
-/*
- * Prepare LMK_PROCPRIO packet and return packet size in bytes.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline size_t lmkd_pack_set_procprio(LMKD_CTRL_PACKET packet, struct lmk_procprio* params) {
-    packet[0] = htonl(LMK_PROCPRIO);
-    packet[1] = htonl(params->pid);
-    packet[2] = htonl(params->uid);
-    packet[3] = htonl(params->oomadj);
-    return 4 * sizeof(int);
-}
-
-/* LMK_PROCREMOVE packet payload */
-struct lmk_procremove {
-    pid_t pid;
-};
-
-/*
- * For LMK_PROCREMOVE packet get its payload.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline void lmkd_pack_get_procremove(LMKD_CTRL_PACKET packet,
-                                            struct lmk_procremove* params) {
-    params->pid = (pid_t)ntohl(packet[1]);
-}
-
-/*
- * Prepare LMK_PROCREMOVE packet and return packet size in bytes.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline size_t lmkd_pack_set_procremove(LMKD_CTRL_PACKET packet,
-                                              struct lmk_procprio* params) {
-    packet[0] = htonl(LMK_PROCREMOVE);
-    packet[1] = htonl(params->pid);
-    return 2 * sizeof(int);
-}
-
-/*
- * Prepare LMK_PROCPURGE packet and return packet size in bytes.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline size_t lmkd_pack_set_procpurge(LMKD_CTRL_PACKET packet) {
-    packet[0] = htonl(LMK_PROCPURGE);
-    return sizeof(int);
-}
-
-/* LMK_GETKILLCNT packet payload */
-struct lmk_getkillcnt {
-    int min_oomadj;
-    int max_oomadj;
-};
-
-/*
- * For LMK_GETKILLCNT packet get its payload.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline void lmkd_pack_get_getkillcnt(LMKD_CTRL_PACKET packet,
-                                            struct lmk_getkillcnt* params) {
-    params->min_oomadj = ntohl(packet[1]);
-    params->max_oomadj = ntohl(packet[2]);
-}
-
-/*
- * Prepare LMK_GETKILLCNT packet and return packet size in bytes.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline size_t lmkd_pack_set_getkillcnt(LMKD_CTRL_PACKET packet,
-                                              struct lmk_getkillcnt* params) {
-    packet[0] = htonl(LMK_GETKILLCNT);
-    packet[1] = htonl(params->min_oomadj);
-    packet[2] = htonl(params->max_oomadj);
-    return 3 * sizeof(int);
-}
-
-/*
- * Prepare LMK_GETKILLCNT reply packet and return packet size in bytes.
- * Warning: no checks performed, caller should ensure valid parameters.
- */
-static inline size_t lmkd_pack_set_getkillcnt_repl(LMKD_CTRL_PACKET packet, int kill_cnt) {
-    packet[0] = htonl(LMK_GETKILLCNT);
-    packet[1] = htonl(kill_cnt);
-    return 2 * sizeof(int);
-}
-
-__END_DECLS
-
-#endif /* _LMKD_H_ */
diff --git a/lmkd/liblmkd_utils.c b/lmkd/liblmkd_utils.c
deleted file mode 100644
index fa3b7a9..0000000
--- a/lmkd/liblmkd_utils.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- *  Copyright 2018 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/cdefs.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include <liblmkd_utils.h>
-#include <cutils/sockets.h>
-
-int lmkd_connect() {
-    return socket_local_client("lmkd",
-                               ANDROID_SOCKET_NAMESPACE_RESERVED,
-                               SOCK_SEQPACKET);
-}
-
-int lmkd_register_proc(int sock, struct lmk_procprio *params) {
-    LMKD_CTRL_PACKET packet;
-    size_t size;
-    int ret;
-
-    size = lmkd_pack_set_procprio(packet, params);
-    ret = TEMP_FAILURE_RETRY(write(sock, packet, size));
-
-    return (ret < 0) ? -1 : 0;
-}
-
-int create_memcg(uid_t uid, pid_t pid) {
-    char buf[256];
-    int tasks_file;
-    int written;
-
-    snprintf(buf, sizeof(buf), "/dev/memcg/apps/uid_%u", uid);
-    if (mkdir(buf, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0 &&
-        errno != EEXIST) {
-        return -1;
-    }
-
-    snprintf(buf, sizeof(buf), "/dev/memcg/apps/uid_%u/pid_%u", uid, pid);
-    if (mkdir(buf, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0 &&
-        errno != EEXIST) {
-        return -1;
-    }
-
-    snprintf(buf, sizeof(buf), "/dev/memcg/apps/uid_%u/pid_%u/tasks", uid, pid);
-    tasks_file = open(buf, O_WRONLY);
-    if (tasks_file < 0) {
-        return -2;
-    }
-    written = snprintf(buf, sizeof(buf), "%u", pid);
-    if (__predict_false(written >= (int)sizeof(buf))) {
-        written = sizeof(buf) - 1;
-    }
-    written = TEMP_FAILURE_RETRY(write(tasks_file, buf, written));
-    close(tasks_file);
-
-    return (written < 0) ? -3 : 0;
-}
-
diff --git a/lmkd/libpsi/Android.bp b/lmkd/libpsi/Android.bp
deleted file mode 100644
index 8a97094..0000000
--- a/lmkd/libpsi/Android.bp
+++ /dev/null
@@ -1,22 +0,0 @@
-cc_library_headers {
-    name: "libpsi_headers",
-    export_include_dirs: ["include"],
-}
-
-cc_library {
-    name: "libpsi",
-    srcs: ["psi.c"],
-    shared_libs: [
-        "liblog"
-    ],
-    header_libs: [
-        "libpsi_headers",
-    ],
-    export_header_lib_headers: [
-        "libpsi_headers",
-    ],
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-}
diff --git a/lmkd/libpsi/OWNERS b/lmkd/libpsi/OWNERS
deleted file mode 100644
index b15bb48..0000000
--- a/lmkd/libpsi/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-surenb@google.com
diff --git a/lmkd/libpsi/include/psi/psi.h b/lmkd/libpsi/include/psi/psi.h
deleted file mode 100644
index cd49e8b..0000000
--- a/lmkd/libpsi/include/psi/psi.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __ANDROID_PSI_H__
-#define __ANDROID_PSI_H__
-
-#include <sys/cdefs.h>
-#include <sys/types.h>
-
-__BEGIN_DECLS
-
-enum psi_stall_type {
-    PSI_SOME,
-    PSI_FULL,
-    PSI_TYPE_COUNT
-};
-
-/*
- * Initializes psi monitor.
- * stall_type, threshold_us and window_us are monitor parameters
- * When successful, the function returns file descriptor that can
- * be used with poll/epoll syscalls to wait for EPOLLPRI events.
- * When unsuccessful, the function returns -1 and errno is set
- * appropriately.
- */
-int init_psi_monitor(enum psi_stall_type stall_type,
-        int threshold_us, int window_us);
-
-/*
- * Registers psi monitor file descriptor fd on the epoll instance
- * referred to by the file descriptor epollfd.
- * data parameter will be associated with event's epoll_data.ptr
- * member.
- */
-int register_psi_monitor(int epollfd, int fd, void* data);
-
-/*
- * Unregisters psi monitor file descriptor fd from the epoll instance
- * referred to by the file descriptor epollfd.
- */
-int unregister_psi_monitor(int epollfd, int fd);
-
-/*
- * Destroys psi monitor.
- * fd is the file descriptor returned by psi monitor initialization
- * routine.
- * Note that if user process exits without calling this routine
- * kernel will destroy the monitor as its lifetime is linked to
- * the file descriptor.
- */
-void destroy_psi_monitor(int fd);
-
-__END_DECLS
-
-#endif  // __ANDROID_PSI_H__
diff --git a/lmkd/libpsi/psi.c b/lmkd/libpsi/psi.c
deleted file mode 100644
index f4d5d18..0000000
--- a/lmkd/libpsi/psi.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "libpsi"
-
-#include <errno.h>
-#include <string.h>
-#include <sys/epoll.h>
-
-#include <log/log.h>
-#include "psi/psi.h"
-
-#define PSI_MON_FILE_MEMORY "/proc/pressure/memory"
-
-static const char* stall_type_name[] = {
-        "some",
-        "full",
-};
-
-int init_psi_monitor(enum psi_stall_type stall_type,
-             int threshold_us, int window_us) {
-    int fd;
-    int res;
-    char buf[256];
-
-    fd = TEMP_FAILURE_RETRY(open(PSI_MON_FILE_MEMORY, O_WRONLY | O_CLOEXEC));
-    if (fd < 0) {
-        ALOGE("No kernel psi monitor support (errno=%d)", errno);
-        return -1;
-    }
-
-    switch (stall_type) {
-    case (PSI_SOME):
-    case (PSI_FULL):
-        res = snprintf(buf, sizeof(buf), "%s %d %d",
-            stall_type_name[stall_type], threshold_us, window_us);
-        break;
-    default:
-        ALOGE("Invalid psi stall type: %d", stall_type);
-        errno = EINVAL;
-        goto err;
-    }
-
-    if (res >= (ssize_t)sizeof(buf)) {
-        ALOGE("%s line overflow for psi stall type '%s'",
-            PSI_MON_FILE_MEMORY, stall_type_name[stall_type]);
-        errno = EINVAL;
-        goto err;
-    }
-
-    res = TEMP_FAILURE_RETRY(write(fd, buf, strlen(buf) + 1));
-    if (res < 0) {
-        ALOGE("%s write failed for psi stall type '%s'; errno=%d",
-            PSI_MON_FILE_MEMORY, stall_type_name[stall_type], errno);
-        goto err;
-    }
-
-    return fd;
-
-err:
-    close(fd);
-    return -1;
-}
-
-int register_psi_monitor(int epollfd, int fd, void* data) {
-    int res;
-    struct epoll_event epev;
-
-    epev.events = EPOLLPRI;
-    epev.data.ptr = data;
-    res = epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &epev);
-    if (res < 0) {
-        ALOGE("epoll_ctl for psi monitor failed; errno=%d", errno);
-    }
-    return res;
-}
-
-int unregister_psi_monitor(int epollfd, int fd) {
-    return epoll_ctl(epollfd, EPOLL_CTL_DEL, fd, NULL);
-}
-
-void destroy_psi_monitor(int fd) {
-    if (fd >= 0) {
-        close(fd);
-    }
-}
diff --git a/lmkd/lmkd.c b/lmkd/lmkd.c
deleted file mode 100644
index 7c5a466..0000000
--- a/lmkd/lmkd.c
+++ /dev/null
@@ -1,2159 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "lowmemorykiller"
-
-#include <dirent.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <pwd.h>
-#include <sched.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/cdefs.h>
-#include <sys/epoll.h>
-#include <sys/eventfd.h>
-#include <sys/mman.h>
-#include <sys/resource.h>
-#include <sys/socket.h>
-#include <sys/sysinfo.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <cutils/properties.h>
-#include <cutils/sched_policy.h>
-#include <cutils/sockets.h>
-#include <lmkd.h>
-#include <log/log.h>
-#include <log/log_event_list.h>
-#include <log/log_time.h>
-#include <psi/psi.h>
-#include <system/thread_defs.h>
-
-#ifdef LMKD_LOG_STATS
-#include "statslog.h"
-#endif
-
-/*
- * Define LMKD_TRACE_KILLS to record lmkd kills in kernel traces
- * to profile and correlate with OOM kills
- */
-#ifdef LMKD_TRACE_KILLS
-
-#define ATRACE_TAG ATRACE_TAG_ALWAYS
-#include <cutils/trace.h>
-
-#define TRACE_KILL_START(pid) ATRACE_INT(__FUNCTION__, pid);
-#define TRACE_KILL_END()      ATRACE_INT(__FUNCTION__, 0);
-
-#else /* LMKD_TRACE_KILLS */
-
-#define TRACE_KILL_START(pid) ((void)(pid))
-#define TRACE_KILL_END() ((void)0)
-
-#endif /* LMKD_TRACE_KILLS */
-
-#ifndef __unused
-#define __unused __attribute__((__unused__))
-#endif
-
-#define MEMCG_SYSFS_PATH "/dev/memcg/"
-#define MEMCG_MEMORY_USAGE "/dev/memcg/memory.usage_in_bytes"
-#define MEMCG_MEMORYSW_USAGE "/dev/memcg/memory.memsw.usage_in_bytes"
-#define ZONEINFO_PATH "/proc/zoneinfo"
-#define MEMINFO_PATH "/proc/meminfo"
-#define PROC_STATUS_TGID_FIELD "Tgid:"
-#define LINE_MAX 128
-
-/* Android Logger event logtags (see event.logtags) */
-#define MEMINFO_LOG_TAG 10195355
-
-/* gid containing AID_SYSTEM required */
-#define INKERNEL_MINFREE_PATH "/sys/module/lowmemorykiller/parameters/minfree"
-#define INKERNEL_ADJ_PATH "/sys/module/lowmemorykiller/parameters/adj"
-
-#define ARRAY_SIZE(x)   (sizeof(x) / sizeof(*(x)))
-#define EIGHT_MEGA (1 << 23)
-
-#define TARGET_UPDATE_MIN_INTERVAL_MS 1000
-
-#define NS_PER_MS (NS_PER_SEC / MS_PER_SEC)
-#define US_PER_MS (US_PER_SEC / MS_PER_SEC)
-
-/* Defined as ProcessList.SYSTEM_ADJ in ProcessList.java */
-#define SYSTEM_ADJ (-900)
-
-#define STRINGIFY(x) STRINGIFY_INTERNAL(x)
-#define STRINGIFY_INTERNAL(x) #x
-
-/*
- * PSI monitor tracking window size.
- * PSI monitor generates events at most once per window,
- * therefore we poll memory state for the duration of
- * PSI_WINDOW_SIZE_MS after the event happens.
- */
-#define PSI_WINDOW_SIZE_MS 1000
-/* Polling period after initial PSI signal */
-#define PSI_POLL_PERIOD_MS 10
-/* Poll for the duration of one window after initial PSI signal */
-#define PSI_POLL_COUNT (PSI_WINDOW_SIZE_MS / PSI_POLL_PERIOD_MS)
-
-#define min(a, b) (((a) < (b)) ? (a) : (b))
-
-#define FAIL_REPORT_RLIMIT_MS 1000
-
-/* default to old in-kernel interface if no memory pressure events */
-static bool use_inkernel_interface = true;
-static bool has_inkernel_module;
-
-/* memory pressure levels */
-enum vmpressure_level {
-    VMPRESS_LEVEL_LOW = 0,
-    VMPRESS_LEVEL_MEDIUM,
-    VMPRESS_LEVEL_CRITICAL,
-    VMPRESS_LEVEL_COUNT
-};
-
-static const char *level_name[] = {
-    "low",
-    "medium",
-    "critical"
-};
-
-struct {
-    int64_t min_nr_free_pages; /* recorded but not used yet */
-    int64_t max_nr_free_pages;
-} low_pressure_mem = { -1, -1 };
-
-struct psi_threshold {
-    enum psi_stall_type stall_type;
-    int threshold_ms;
-};
-
-static int level_oomadj[VMPRESS_LEVEL_COUNT];
-static int mpevfd[VMPRESS_LEVEL_COUNT] = { -1, -1, -1 };
-static bool debug_process_killing;
-static bool enable_pressure_upgrade;
-static int64_t upgrade_pressure;
-static int64_t downgrade_pressure;
-static bool low_ram_device;
-static bool kill_heaviest_task;
-static unsigned long kill_timeout_ms;
-static bool use_minfree_levels;
-static bool per_app_memcg;
-static int swap_free_low_percentage;
-static bool use_psi_monitors = false;
-static struct psi_threshold psi_thresholds[VMPRESS_LEVEL_COUNT] = {
-    { PSI_SOME, 70 },    /* 70ms out of 1sec for partial stall */
-    { PSI_SOME, 100 },   /* 100ms out of 1sec for partial stall */
-    { PSI_FULL, 70 },    /* 70ms out of 1sec for complete stall */
-};
-
-static android_log_context ctx;
-
-/* data required to handle events */
-struct event_handler_info {
-    int data;
-    void (*handler)(int data, uint32_t events);
-};
-
-/* data required to handle socket events */
-struct sock_event_handler_info {
-    int sock;
-    struct event_handler_info handler_info;
-};
-
-/* max supported number of data connections */
-#define MAX_DATA_CONN 2
-
-/* socket event handler data */
-static struct sock_event_handler_info ctrl_sock;
-static struct sock_event_handler_info data_sock[MAX_DATA_CONN];
-
-/* vmpressure event handler data */
-static struct event_handler_info vmpressure_hinfo[VMPRESS_LEVEL_COUNT];
-
-/* 3 memory pressure levels, 1 ctrl listen socket, 2 ctrl data socket */
-#define MAX_EPOLL_EVENTS (1 + MAX_DATA_CONN + VMPRESS_LEVEL_COUNT)
-static int epollfd;
-static int maxevents;
-
-/* OOM score values used by both kernel and framework */
-#define OOM_SCORE_ADJ_MIN       (-1000)
-#define OOM_SCORE_ADJ_MAX       1000
-
-static int lowmem_adj[MAX_TARGETS];
-static int lowmem_minfree[MAX_TARGETS];
-static int lowmem_targets_size;
-
-/* Fields to parse in /proc/zoneinfo */
-enum zoneinfo_field {
-    ZI_NR_FREE_PAGES = 0,
-    ZI_NR_FILE_PAGES,
-    ZI_NR_SHMEM,
-    ZI_NR_UNEVICTABLE,
-    ZI_WORKINGSET_REFAULT,
-    ZI_HIGH,
-    ZI_FIELD_COUNT
-};
-
-static const char* const zoneinfo_field_names[ZI_FIELD_COUNT] = {
-    "nr_free_pages",
-    "nr_file_pages",
-    "nr_shmem",
-    "nr_unevictable",
-    "workingset_refault",
-    "high",
-};
-
-union zoneinfo {
-    struct {
-        int64_t nr_free_pages;
-        int64_t nr_file_pages;
-        int64_t nr_shmem;
-        int64_t nr_unevictable;
-        int64_t workingset_refault;
-        int64_t high;
-        /* fields below are calculated rather than read from the file */
-        int64_t totalreserve_pages;
-    } field;
-    int64_t arr[ZI_FIELD_COUNT];
-};
-
-/* Fields to parse in /proc/meminfo */
-enum meminfo_field {
-    MI_NR_FREE_PAGES = 0,
-    MI_CACHED,
-    MI_SWAP_CACHED,
-    MI_BUFFERS,
-    MI_SHMEM,
-    MI_UNEVICTABLE,
-    MI_TOTAL_SWAP,
-    MI_FREE_SWAP,
-    MI_ACTIVE_ANON,
-    MI_INACTIVE_ANON,
-    MI_ACTIVE_FILE,
-    MI_INACTIVE_FILE,
-    MI_SRECLAIMABLE,
-    MI_SUNRECLAIM,
-    MI_KERNEL_STACK,
-    MI_PAGE_TABLES,
-    MI_ION_HELP,
-    MI_ION_HELP_POOL,
-    MI_CMA_FREE,
-    MI_FIELD_COUNT
-};
-
-static const char* const meminfo_field_names[MI_FIELD_COUNT] = {
-    "MemFree:",
-    "Cached:",
-    "SwapCached:",
-    "Buffers:",
-    "Shmem:",
-    "Unevictable:",
-    "SwapTotal:",
-    "SwapFree:",
-    "Active(anon):",
-    "Inactive(anon):",
-    "Active(file):",
-    "Inactive(file):",
-    "SReclaimable:",
-    "SUnreclaim:",
-    "KernelStack:",
-    "PageTables:",
-    "ION_heap:",
-    "ION_heap_pool:",
-    "CmaFree:",
-};
-
-union meminfo {
-    struct {
-        int64_t nr_free_pages;
-        int64_t cached;
-        int64_t swap_cached;
-        int64_t buffers;
-        int64_t shmem;
-        int64_t unevictable;
-        int64_t total_swap;
-        int64_t free_swap;
-        int64_t active_anon;
-        int64_t inactive_anon;
-        int64_t active_file;
-        int64_t inactive_file;
-        int64_t sreclaimable;
-        int64_t sunreclaimable;
-        int64_t kernel_stack;
-        int64_t page_tables;
-        int64_t ion_heap;
-        int64_t ion_heap_pool;
-        int64_t cma_free;
-        /* fields below are calculated rather than read from the file */
-        int64_t nr_file_pages;
-    } field;
-    int64_t arr[MI_FIELD_COUNT];
-};
-
-enum field_match_result {
-    NO_MATCH,
-    PARSE_FAIL,
-    PARSE_SUCCESS
-};
-
-struct adjslot_list {
-    struct adjslot_list *next;
-    struct adjslot_list *prev;
-};
-
-struct proc {
-    struct adjslot_list asl;
-    int pid;
-    uid_t uid;
-    int oomadj;
-    struct proc *pidhash_next;
-};
-
-struct reread_data {
-    const char* const filename;
-    int fd;
-};
-
-#ifdef LMKD_LOG_STATS
-static bool enable_stats_log;
-static android_log_context log_ctx;
-#endif
-
-#define PIDHASH_SZ 1024
-static struct proc *pidhash[PIDHASH_SZ];
-#define pid_hashfn(x) ((((x) >> 8) ^ (x)) & (PIDHASH_SZ - 1))
-
-#define ADJTOSLOT(adj) ((adj) + -OOM_SCORE_ADJ_MIN)
-#define ADJTOSLOT_COUNT (ADJTOSLOT(OOM_SCORE_ADJ_MAX) + 1)
-static struct adjslot_list procadjslot_list[ADJTOSLOT_COUNT];
-
-#define MAX_DISTINCT_OOM_ADJ 32
-#define KILLCNT_INVALID_IDX 0xFF
-/*
- * Because killcnt array is sparse a two-level indirection is used
- * to keep the size small. killcnt_idx stores index of the element in
- * killcnt array. Index KILLCNT_INVALID_IDX indicates an unused slot.
- */
-static uint8_t killcnt_idx[ADJTOSLOT_COUNT];
-static uint16_t killcnt[MAX_DISTINCT_OOM_ADJ];
-static int killcnt_free_idx = 0;
-static uint32_t killcnt_total = 0;
-
-/* PAGE_SIZE / 1024 */
-static long page_k;
-
-static bool parse_int64(const char* str, int64_t* ret) {
-    char* endptr;
-    long long val = strtoll(str, &endptr, 10);
-    if (str == endptr || val > INT64_MAX) {
-        return false;
-    }
-    *ret = (int64_t)val;
-    return true;
-}
-
-static enum field_match_result match_field(const char* cp, const char* ap,
-                                   const char* const field_names[],
-                                   int field_count, int64_t* field,
-                                   int *field_idx) {
-    int64_t val;
-    int i;
-
-    for (i = 0; i < field_count; i++) {
-        if (!strcmp(cp, field_names[i])) {
-            *field_idx = i;
-            return parse_int64(ap, field) ? PARSE_SUCCESS : PARSE_FAIL;
-        }
-    }
-    return NO_MATCH;
-}
-
-/*
- * Read file content from the beginning up to max_len bytes or EOF
- * whichever happens first.
- */
-static ssize_t read_all(int fd, char *buf, size_t max_len)
-{
-    ssize_t ret = 0;
-    off_t offset = 0;
-
-    while (max_len > 0) {
-        ssize_t r = TEMP_FAILURE_RETRY(pread(fd, buf, max_len, offset));
-        if (r == 0) {
-            break;
-        }
-        if (r == -1) {
-            return -1;
-        }
-        ret += r;
-        buf += r;
-        offset += r;
-        max_len -= r;
-    }
-
-    return ret;
-}
-
-/*
- * Read a new or already opened file from the beginning.
- * If the file has not been opened yet data->fd should be set to -1.
- * To be used with files which are read often and possibly during high
- * memory pressure to minimize file opening which by itself requires kernel
- * memory allocation and might result in a stall on memory stressed system.
- */
-static int reread_file(struct reread_data *data, char *buf, size_t buf_size) {
-    ssize_t size;
-
-    if (data->fd == -1) {
-        data->fd = open(data->filename, O_RDONLY | O_CLOEXEC);
-        if (data->fd == -1) {
-            ALOGE("%s open: %s", data->filename, strerror(errno));
-            return -1;
-        }
-    }
-
-    size = read_all(data->fd, buf, buf_size - 1);
-    if (size < 0) {
-        ALOGE("%s read: %s", data->filename, strerror(errno));
-        close(data->fd);
-        data->fd = -1;
-        return -1;
-    }
-    ALOG_ASSERT((size_t)size < buf_size - 1, "%s too large", data->filename);
-    buf[size] = 0;
-
-    return 0;
-}
-
-static struct proc *pid_lookup(int pid) {
-    struct proc *procp;
-
-    for (procp = pidhash[pid_hashfn(pid)]; procp && procp->pid != pid;
-         procp = procp->pidhash_next)
-            ;
-
-    return procp;
-}
-
-static void adjslot_insert(struct adjslot_list *head, struct adjslot_list *new)
-{
-    struct adjslot_list *next = head->next;
-    new->prev = head;
-    new->next = next;
-    next->prev = new;
-    head->next = new;
-}
-
-static void adjslot_remove(struct adjslot_list *old)
-{
-    struct adjslot_list *prev = old->prev;
-    struct adjslot_list *next = old->next;
-    next->prev = prev;
-    prev->next = next;
-}
-
-static struct adjslot_list *adjslot_tail(struct adjslot_list *head) {
-    struct adjslot_list *asl = head->prev;
-
-    return asl == head ? NULL : asl;
-}
-
-static void proc_slot(struct proc *procp) {
-    int adjslot = ADJTOSLOT(procp->oomadj);
-
-    adjslot_insert(&procadjslot_list[adjslot], &procp->asl);
-}
-
-static void proc_unslot(struct proc *procp) {
-    adjslot_remove(&procp->asl);
-}
-
-static void proc_insert(struct proc *procp) {
-    int hval = pid_hashfn(procp->pid);
-
-    procp->pidhash_next = pidhash[hval];
-    pidhash[hval] = procp;
-    proc_slot(procp);
-}
-
-static int pid_remove(int pid) {
-    int hval = pid_hashfn(pid);
-    struct proc *procp;
-    struct proc *prevp;
-
-    for (procp = pidhash[hval], prevp = NULL; procp && procp->pid != pid;
-         procp = procp->pidhash_next)
-            prevp = procp;
-
-    if (!procp)
-        return -1;
-
-    if (!prevp)
-        pidhash[hval] = procp->pidhash_next;
-    else
-        prevp->pidhash_next = procp->pidhash_next;
-
-    proc_unslot(procp);
-    free(procp);
-    return 0;
-}
-
-/*
- * Write a string to a file.
- * Returns false if the file does not exist.
- */
-static bool writefilestring(const char *path, const char *s,
-                            bool err_if_missing) {
-    int fd = open(path, O_WRONLY | O_CLOEXEC);
-    ssize_t len = strlen(s);
-    ssize_t ret;
-
-    if (fd < 0) {
-        if (err_if_missing) {
-            ALOGE("Error opening %s; errno=%d", path, errno);
-        }
-        return false;
-    }
-
-    ret = TEMP_FAILURE_RETRY(write(fd, s, len));
-    if (ret < 0) {
-        ALOGE("Error writing %s; errno=%d", path, errno);
-    } else if (ret < len) {
-        ALOGE("Short write on %s; length=%zd", path, ret);
-    }
-
-    close(fd);
-    return true;
-}
-
-static inline long get_time_diff_ms(struct timespec *from,
-                                    struct timespec *to) {
-    return (to->tv_sec - from->tv_sec) * (long)MS_PER_SEC +
-           (to->tv_nsec - from->tv_nsec) / (long)NS_PER_MS;
-}
-
-static int proc_get_tgid(int pid) {
-    char path[PATH_MAX];
-    char buf[PAGE_SIZE];
-    int fd;
-    ssize_t size;
-    char *pos;
-    int64_t tgid = -1;
-
-    snprintf(path, PATH_MAX, "/proc/%d/status", pid);
-    fd = open(path, O_RDONLY | O_CLOEXEC);
-    if (fd < 0) {
-        return -1;
-    }
-
-    size = read_all(fd, buf, sizeof(buf) - 1);
-    if (size < 0) {
-        goto out;
-    }
-    buf[size] = 0;
-
-    pos = buf;
-    while (true) {
-        pos = strstr(pos, PROC_STATUS_TGID_FIELD);
-        /* Stop if TGID tag not found or found at the line beginning */
-        if (pos == NULL || pos == buf || pos[-1] == '\n') {
-            break;
-        }
-        pos++;
-    }
-
-    if (pos == NULL) {
-        goto out;
-    }
-
-    pos += strlen(PROC_STATUS_TGID_FIELD);
-    while (*pos == ' ') pos++;
-    parse_int64(pos, &tgid);
-
-out:
-    close(fd);
-    return (int)tgid;
-}
-
-static void cmd_procprio(LMKD_CTRL_PACKET packet) {
-    struct proc *procp;
-    char path[80];
-    char val[20];
-    int soft_limit_mult;
-    struct lmk_procprio params;
-    bool is_system_server;
-    struct passwd *pwdrec;
-    int tgid;
-
-    lmkd_pack_get_procprio(packet, &params);
-
-    if (params.oomadj < OOM_SCORE_ADJ_MIN ||
-        params.oomadj > OOM_SCORE_ADJ_MAX) {
-        ALOGE("Invalid PROCPRIO oomadj argument %d", params.oomadj);
-        return;
-    }
-
-    /* Check if registered process is a thread group leader */
-    tgid = proc_get_tgid(params.pid);
-    if (tgid >= 0 && tgid != params.pid) {
-        ALOGE("Attempt to register a task that is not a thread group leader (tid %d, tgid %d)",
-            params.pid, tgid);
-        return;
-    }
-
-    /* gid containing AID_READPROC required */
-    /* CAP_SYS_RESOURCE required */
-    /* CAP_DAC_OVERRIDE required */
-    snprintf(path, sizeof(path), "/proc/%d/oom_score_adj", params.pid);
-    snprintf(val, sizeof(val), "%d", params.oomadj);
-    if (!writefilestring(path, val, false)) {
-        ALOGW("Failed to open %s; errno=%d: process %d might have been killed",
-              path, errno, params.pid);
-        /* If this file does not exist the process is dead. */
-        return;
-    }
-
-    if (use_inkernel_interface) {
-        return;
-    }
-
-    if (per_app_memcg) {
-        if (params.oomadj >= 900) {
-            soft_limit_mult = 0;
-        } else if (params.oomadj >= 800) {
-            soft_limit_mult = 0;
-        } else if (params.oomadj >= 700) {
-            soft_limit_mult = 0;
-        } else if (params.oomadj >= 600) {
-            // Launcher should be perceptible, don't kill it.
-            params.oomadj = 200;
-            soft_limit_mult = 1;
-        } else if (params.oomadj >= 500) {
-            soft_limit_mult = 0;
-        } else if (params.oomadj >= 400) {
-            soft_limit_mult = 0;
-        } else if (params.oomadj >= 300) {
-            soft_limit_mult = 1;
-        } else if (params.oomadj >= 200) {
-            soft_limit_mult = 8;
-        } else if (params.oomadj >= 100) {
-            soft_limit_mult = 10;
-        } else if (params.oomadj >=   0) {
-            soft_limit_mult = 20;
-        } else {
-            // Persistent processes will have a large
-            // soft limit 512MB.
-            soft_limit_mult = 64;
-        }
-
-        snprintf(path, sizeof(path), MEMCG_SYSFS_PATH
-                 "apps/uid_%d/pid_%d/memory.soft_limit_in_bytes",
-                 params.uid, params.pid);
-        snprintf(val, sizeof(val), "%d", soft_limit_mult * EIGHT_MEGA);
-
-        /*
-         * system_server process has no memcg under /dev/memcg/apps but should be
-         * registered with lmkd. This is the best way so far to identify it.
-         */
-        is_system_server = (params.oomadj == SYSTEM_ADJ &&
-                            (pwdrec = getpwnam("system")) != NULL &&
-                            params.uid == pwdrec->pw_uid);
-        writefilestring(path, val, !is_system_server);
-    }
-
-    procp = pid_lookup(params.pid);
-    if (!procp) {
-            procp = malloc(sizeof(struct proc));
-            if (!procp) {
-                // Oh, the irony.  May need to rebuild our state.
-                return;
-            }
-
-            procp->pid = params.pid;
-            procp->uid = params.uid;
-            procp->oomadj = params.oomadj;
-            proc_insert(procp);
-    } else {
-        proc_unslot(procp);
-        procp->oomadj = params.oomadj;
-        proc_slot(procp);
-    }
-}
-
-static void cmd_procremove(LMKD_CTRL_PACKET packet) {
-    struct lmk_procremove params;
-
-    if (use_inkernel_interface) {
-        return;
-    }
-
-    lmkd_pack_get_procremove(packet, &params);
-    /*
-     * WARNING: After pid_remove() procp is freed and can't be used!
-     * Therefore placed at the end of the function.
-     */
-    pid_remove(params.pid);
-}
-
-static void cmd_procpurge() {
-    int i;
-    struct proc *procp;
-    struct proc *next;
-
-    if (use_inkernel_interface) {
-        return;
-    }
-
-    for (i = 0; i <= ADJTOSLOT(OOM_SCORE_ADJ_MAX); i++) {
-        procadjslot_list[i].next = &procadjslot_list[i];
-        procadjslot_list[i].prev = &procadjslot_list[i];
-    }
-
-    for (i = 0; i < PIDHASH_SZ; i++) {
-        procp = pidhash[i];
-        while (procp) {
-            next = procp->pidhash_next;
-            free(procp);
-            procp = next;
-        }
-    }
-    memset(&pidhash[0], 0, sizeof(pidhash));
-}
-
-static void inc_killcnt(int oomadj) {
-    int slot = ADJTOSLOT(oomadj);
-    uint8_t idx = killcnt_idx[slot];
-
-    if (idx == KILLCNT_INVALID_IDX) {
-        /* index is not assigned for this oomadj */
-        if (killcnt_free_idx < MAX_DISTINCT_OOM_ADJ) {
-            killcnt_idx[slot] = killcnt_free_idx;
-            killcnt[killcnt_free_idx] = 1;
-            killcnt_free_idx++;
-        } else {
-            ALOGW("Number of distinct oomadj levels exceeds %d",
-                MAX_DISTINCT_OOM_ADJ);
-        }
-    } else {
-        /*
-         * wraparound is highly unlikely and is detectable using total
-         * counter because it has to be equal to the sum of all counters
-         */
-        killcnt[idx]++;
-    }
-    /* increment total kill counter */
-    killcnt_total++;
-}
-
-static int get_killcnt(int min_oomadj, int max_oomadj) {
-    int slot;
-    int count = 0;
-
-    if (min_oomadj > max_oomadj)
-        return 0;
-
-    /* special case to get total kill count */
-    if (min_oomadj > OOM_SCORE_ADJ_MAX)
-        return killcnt_total;
-
-    while (min_oomadj <= max_oomadj &&
-           (slot = ADJTOSLOT(min_oomadj)) < ADJTOSLOT_COUNT) {
-        uint8_t idx = killcnt_idx[slot];
-        if (idx != KILLCNT_INVALID_IDX) {
-            count += killcnt[idx];
-        }
-        min_oomadj++;
-    }
-
-    return count;
-}
-
-static int cmd_getkillcnt(LMKD_CTRL_PACKET packet) {
-    struct lmk_getkillcnt params;
-
-    if (use_inkernel_interface) {
-        /* kernel driver does not expose this information */
-        return 0;
-    }
-
-    lmkd_pack_get_getkillcnt(packet, &params);
-
-    return get_killcnt(params.min_oomadj, params.max_oomadj);
-}
-
-static void cmd_target(int ntargets, LMKD_CTRL_PACKET packet) {
-    int i;
-    struct lmk_target target;
-    char minfree_str[PROPERTY_VALUE_MAX];
-    char *pstr = minfree_str;
-    char *pend = minfree_str + sizeof(minfree_str);
-    static struct timespec last_req_tm;
-    struct timespec curr_tm;
-
-    if (ntargets < 1 || ntargets > (int)ARRAY_SIZE(lowmem_adj))
-        return;
-
-    /*
-     * Ratelimit minfree updates to once per TARGET_UPDATE_MIN_INTERVAL_MS
-     * to prevent DoS attacks
-     */
-    if (clock_gettime(CLOCK_MONOTONIC_COARSE, &curr_tm) != 0) {
-        ALOGE("Failed to get current time");
-        return;
-    }
-
-    if (get_time_diff_ms(&last_req_tm, &curr_tm) <
-        TARGET_UPDATE_MIN_INTERVAL_MS) {
-        ALOGE("Ignoring frequent updated to lmkd limits");
-        return;
-    }
-
-    last_req_tm = curr_tm;
-
-    for (i = 0; i < ntargets; i++) {
-        lmkd_pack_get_target(packet, i, &target);
-        lowmem_minfree[i] = target.minfree;
-        lowmem_adj[i] = target.oom_adj_score;
-
-        pstr += snprintf(pstr, pend - pstr, "%d:%d,", target.minfree,
-            target.oom_adj_score);
-        if (pstr >= pend) {
-            /* if no more space in the buffer then terminate the loop */
-            pstr = pend;
-            break;
-        }
-    }
-
-    lowmem_targets_size = ntargets;
-
-    /* Override the last extra comma */
-    pstr[-1] = '\0';
-    property_set("sys.lmk.minfree_levels", minfree_str);
-
-    if (has_inkernel_module) {
-        char minfreestr[128];
-        char killpriostr[128];
-
-        minfreestr[0] = '\0';
-        killpriostr[0] = '\0';
-
-        for (i = 0; i < lowmem_targets_size; i++) {
-            char val[40];
-
-            if (i) {
-                strlcat(minfreestr, ",", sizeof(minfreestr));
-                strlcat(killpriostr, ",", sizeof(killpriostr));
-            }
-
-            snprintf(val, sizeof(val), "%d", use_inkernel_interface ? lowmem_minfree[i] : 0);
-            strlcat(minfreestr, val, sizeof(minfreestr));
-            snprintf(val, sizeof(val), "%d", use_inkernel_interface ? lowmem_adj[i] : 0);
-            strlcat(killpriostr, val, sizeof(killpriostr));
-        }
-
-        writefilestring(INKERNEL_MINFREE_PATH, minfreestr, true);
-        writefilestring(INKERNEL_ADJ_PATH, killpriostr, true);
-    }
-}
-
-static void ctrl_data_close(int dsock_idx) {
-    struct epoll_event epev;
-
-    ALOGI("closing lmkd data connection");
-    if (epoll_ctl(epollfd, EPOLL_CTL_DEL, data_sock[dsock_idx].sock, &epev) == -1) {
-        // Log a warning and keep going
-        ALOGW("epoll_ctl for data connection socket failed; errno=%d", errno);
-    }
-    maxevents--;
-
-    close(data_sock[dsock_idx].sock);
-    data_sock[dsock_idx].sock = -1;
-}
-
-static int ctrl_data_read(int dsock_idx, char *buf, size_t bufsz) {
-    int ret = 0;
-
-    ret = TEMP_FAILURE_RETRY(read(data_sock[dsock_idx].sock, buf, bufsz));
-
-    if (ret == -1) {
-        ALOGE("control data socket read failed; errno=%d", errno);
-    } else if (ret == 0) {
-        ALOGE("Got EOF on control data socket");
-        ret = -1;
-    }
-
-    return ret;
-}
-
-static int ctrl_data_write(int dsock_idx, char *buf, size_t bufsz) {
-    int ret = 0;
-
-    ret = TEMP_FAILURE_RETRY(write(data_sock[dsock_idx].sock, buf, bufsz));
-
-    if (ret == -1) {
-        ALOGE("control data socket write failed; errno=%d", errno);
-    } else if (ret == 0) {
-        ALOGE("Got EOF on control data socket");
-        ret = -1;
-    }
-
-    return ret;
-}
-
-static void ctrl_command_handler(int dsock_idx) {
-    LMKD_CTRL_PACKET packet;
-    int len;
-    enum lmk_cmd cmd;
-    int nargs;
-    int targets;
-    int kill_cnt;
-
-    len = ctrl_data_read(dsock_idx, (char *)packet, CTRL_PACKET_MAX_SIZE);
-    if (len <= 0)
-        return;
-
-    if (len < (int)sizeof(int)) {
-        ALOGE("Wrong control socket read length len=%d", len);
-        return;
-    }
-
-    cmd = lmkd_pack_get_cmd(packet);
-    nargs = len / sizeof(int) - 1;
-    if (nargs < 0)
-        goto wronglen;
-
-    switch(cmd) {
-    case LMK_TARGET:
-        targets = nargs / 2;
-        if (nargs & 0x1 || targets > (int)ARRAY_SIZE(lowmem_adj))
-            goto wronglen;
-        cmd_target(targets, packet);
-        break;
-    case LMK_PROCPRIO:
-        if (nargs != 3)
-            goto wronglen;
-        cmd_procprio(packet);
-        break;
-    case LMK_PROCREMOVE:
-        if (nargs != 1)
-            goto wronglen;
-        cmd_procremove(packet);
-        break;
-    case LMK_PROCPURGE:
-        if (nargs != 0)
-            goto wronglen;
-        cmd_procpurge();
-        break;
-    case LMK_GETKILLCNT:
-        if (nargs != 2)
-            goto wronglen;
-        kill_cnt = cmd_getkillcnt(packet);
-        len = lmkd_pack_set_getkillcnt_repl(packet, kill_cnt);
-        if (ctrl_data_write(dsock_idx, (char *)packet, len) != len)
-            return;
-        break;
-    default:
-        ALOGE("Received unknown command code %d", cmd);
-        return;
-    }
-
-    return;
-
-wronglen:
-    ALOGE("Wrong control socket read length cmd=%d len=%d", cmd, len);
-}
-
-static void ctrl_data_handler(int data, uint32_t events) {
-    if (events & EPOLLIN) {
-        ctrl_command_handler(data);
-    }
-}
-
-static int get_free_dsock() {
-    for (int i = 0; i < MAX_DATA_CONN; i++) {
-        if (data_sock[i].sock < 0) {
-            return i;
-        }
-    }
-    return -1;
-}
-
-static void ctrl_connect_handler(int data __unused, uint32_t events __unused) {
-    struct epoll_event epev;
-    int free_dscock_idx = get_free_dsock();
-
-    if (free_dscock_idx < 0) {
-        /*
-         * Number of data connections exceeded max supported. This should not
-         * happen but if it does we drop all existing connections and accept
-         * the new one. This prevents inactive connections from monopolizing
-         * data socket and if we drop ActivityManager connection it will
-         * immediately reconnect.
-         */
-        for (int i = 0; i < MAX_DATA_CONN; i++) {
-            ctrl_data_close(i);
-        }
-        free_dscock_idx = 0;
-    }
-
-    data_sock[free_dscock_idx].sock = accept(ctrl_sock.sock, NULL, NULL);
-    if (data_sock[free_dscock_idx].sock < 0) {
-        ALOGE("lmkd control socket accept failed; errno=%d", errno);
-        return;
-    }
-
-    ALOGI("lmkd data connection established");
-    /* use data to store data connection idx */
-    data_sock[free_dscock_idx].handler_info.data = free_dscock_idx;
-    data_sock[free_dscock_idx].handler_info.handler = ctrl_data_handler;
-    epev.events = EPOLLIN;
-    epev.data.ptr = (void *)&(data_sock[free_dscock_idx].handler_info);
-    if (epoll_ctl(epollfd, EPOLL_CTL_ADD, data_sock[free_dscock_idx].sock, &epev) == -1) {
-        ALOGE("epoll_ctl for data connection socket failed; errno=%d", errno);
-        ctrl_data_close(free_dscock_idx);
-        return;
-    }
-    maxevents++;
-}
-
-#ifdef LMKD_LOG_STATS
-static void memory_stat_parse_line(char* line, struct memory_stat* mem_st) {
-    char key[LINE_MAX + 1];
-    int64_t value;
-
-    sscanf(line, "%" STRINGIFY(LINE_MAX) "s  %" SCNd64 "", key, &value);
-
-    if (strcmp(key, "total_") < 0) {
-        return;
-    }
-
-    if (!strcmp(key, "total_pgfault"))
-        mem_st->pgfault = value;
-    else if (!strcmp(key, "total_pgmajfault"))
-        mem_st->pgmajfault = value;
-    else if (!strcmp(key, "total_rss"))
-        mem_st->rss_in_bytes = value;
-    else if (!strcmp(key, "total_cache"))
-        mem_st->cache_in_bytes = value;
-    else if (!strcmp(key, "total_swap"))
-        mem_st->swap_in_bytes = value;
-}
-
-static int memory_stat_from_cgroup(struct memory_stat* mem_st, int pid, uid_t uid) {
-    FILE *fp;
-    char buf[PATH_MAX];
-
-    snprintf(buf, sizeof(buf), MEMCG_PROCESS_MEMORY_STAT_PATH, uid, pid);
-
-    fp = fopen(buf, "r");
-
-    if (fp == NULL) {
-        ALOGE("%s open failed: %s", buf, strerror(errno));
-        return -1;
-    }
-
-    while (fgets(buf, PAGE_SIZE, fp) != NULL) {
-        memory_stat_parse_line(buf, mem_st);
-    }
-    fclose(fp);
-
-    return 0;
-}
-
-static int memory_stat_from_procfs(struct memory_stat* mem_st, int pid) {
-    char path[PATH_MAX];
-    char buffer[PROC_STAT_BUFFER_SIZE];
-    int fd, ret;
-
-    snprintf(path, sizeof(path), PROC_STAT_FILE_PATH, pid);
-    if ((fd = open(path, O_RDONLY | O_CLOEXEC)) < 0) {
-        ALOGE("%s open failed: %s", path, strerror(errno));
-        return -1;
-    }
-
-    ret = read(fd, buffer, sizeof(buffer));
-    if (ret < 0) {
-        ALOGE("%s read failed: %s", path, strerror(errno));
-        close(fd);
-        return -1;
-    }
-    close(fd);
-
-    // field 10 is pgfault
-    // field 12 is pgmajfault
-    // field 22 is starttime
-    // field 24 is rss_in_pages
-    int64_t pgfault = 0, pgmajfault = 0, starttime = 0, rss_in_pages = 0;
-    if (sscanf(buffer,
-               "%*u %*s %*s %*d %*d %*d %*d %*d %*d %" SCNd64 " %*d "
-               "%" SCNd64 " %*d %*u %*u %*d %*d %*d %*d %*d %*d "
-               "%" SCNd64 " %*d %" SCNd64 "",
-               &pgfault, &pgmajfault, &starttime, &rss_in_pages) != 4) {
-        return -1;
-    }
-    mem_st->pgfault = pgfault;
-    mem_st->pgmajfault = pgmajfault;
-    mem_st->rss_in_bytes = (rss_in_pages * PAGE_SIZE);
-    mem_st->process_start_time_ns = starttime * (NS_PER_SEC / sysconf(_SC_CLK_TCK));
-    return 0;
-}
-#endif
-
-/* /prop/zoneinfo parsing routines */
-static int64_t zoneinfo_parse_protection(char *cp) {
-    int64_t max = 0;
-    long long zoneval;
-    char *save_ptr;
-
-    for (cp = strtok_r(cp, "(), ", &save_ptr); cp;
-         cp = strtok_r(NULL, "), ", &save_ptr)) {
-        zoneval = strtoll(cp, &cp, 0);
-        if (zoneval > max) {
-            max = (zoneval > INT64_MAX) ? INT64_MAX : zoneval;
-        }
-    }
-
-    return max;
-}
-
-static bool zoneinfo_parse_line(char *line, union zoneinfo *zi) {
-    char *cp = line;
-    char *ap;
-    char *save_ptr;
-    int64_t val;
-    int field_idx;
-
-    cp = strtok_r(line, " ", &save_ptr);
-    if (!cp) {
-        return true;
-    }
-
-    if (!strcmp(cp, "protection:")) {
-        ap = strtok_r(NULL, ")", &save_ptr);
-    } else {
-        ap = strtok_r(NULL, " ", &save_ptr);
-    }
-
-    if (!ap) {
-        return true;
-    }
-
-    switch (match_field(cp, ap, zoneinfo_field_names,
-                        ZI_FIELD_COUNT, &val, &field_idx)) {
-    case (PARSE_SUCCESS):
-        zi->arr[field_idx] += val;
-        break;
-    case (NO_MATCH):
-        if (!strcmp(cp, "protection:")) {
-            zi->field.totalreserve_pages +=
-                zoneinfo_parse_protection(ap);
-        }
-        break;
-    case (PARSE_FAIL):
-    default:
-        return false;
-    }
-    return true;
-}
-
-static int zoneinfo_parse(union zoneinfo *zi) {
-    static struct reread_data file_data = {
-        .filename = ZONEINFO_PATH,
-        .fd = -1,
-    };
-    char buf[PAGE_SIZE];
-    char *save_ptr;
-    char *line;
-
-    memset(zi, 0, sizeof(union zoneinfo));
-
-    if (reread_file(&file_data, buf, sizeof(buf)) < 0) {
-        return -1;
-    }
-
-    for (line = strtok_r(buf, "\n", &save_ptr); line;
-         line = strtok_r(NULL, "\n", &save_ptr)) {
-        if (!zoneinfo_parse_line(line, zi)) {
-            ALOGE("%s parse error", file_data.filename);
-            return -1;
-        }
-    }
-    zi->field.totalreserve_pages += zi->field.high;
-
-    return 0;
-}
-
-/* /prop/meminfo parsing routines */
-static bool meminfo_parse_line(char *line, union meminfo *mi) {
-    char *cp = line;
-    char *ap;
-    char *save_ptr;
-    int64_t val;
-    int field_idx;
-    enum field_match_result match_res;
-
-    cp = strtok_r(line, " ", &save_ptr);
-    if (!cp) {
-        return false;
-    }
-
-    ap = strtok_r(NULL, " ", &save_ptr);
-    if (!ap) {
-        return false;
-    }
-
-    match_res = match_field(cp, ap, meminfo_field_names, MI_FIELD_COUNT,
-        &val, &field_idx);
-    if (match_res == PARSE_SUCCESS) {
-        mi->arr[field_idx] = val / page_k;
-    }
-    return (match_res != PARSE_FAIL);
-}
-
-static int meminfo_parse(union meminfo *mi) {
-    static struct reread_data file_data = {
-        .filename = MEMINFO_PATH,
-        .fd = -1,
-    };
-    char buf[PAGE_SIZE];
-    char *save_ptr;
-    char *line;
-
-    memset(mi, 0, sizeof(union meminfo));
-
-    if (reread_file(&file_data, buf, sizeof(buf)) < 0) {
-        return -1;
-    }
-
-    for (line = strtok_r(buf, "\n", &save_ptr); line;
-         line = strtok_r(NULL, "\n", &save_ptr)) {
-        if (!meminfo_parse_line(line, mi)) {
-            ALOGE("%s parse error", file_data.filename);
-            return -1;
-        }
-    }
-    mi->field.nr_file_pages = mi->field.cached + mi->field.swap_cached +
-        mi->field.buffers;
-
-    return 0;
-}
-
-static void meminfo_log(union meminfo *mi) {
-    for (int field_idx = 0; field_idx < MI_FIELD_COUNT; field_idx++) {
-        android_log_write_int32(ctx, (int32_t)min(mi->arr[field_idx] * page_k, INT32_MAX));
-    }
-
-    android_log_write_list(ctx, LOG_ID_EVENTS);
-    android_log_reset(ctx);
-}
-
-static int proc_get_size(int pid) {
-    char path[PATH_MAX];
-    char line[LINE_MAX];
-    int fd;
-    int rss = 0;
-    int total;
-    ssize_t ret;
-
-    /* gid containing AID_READPROC required */
-    snprintf(path, PATH_MAX, "/proc/%d/statm", pid);
-    fd = open(path, O_RDONLY | O_CLOEXEC);
-    if (fd == -1)
-        return -1;
-
-    ret = read_all(fd, line, sizeof(line) - 1);
-    if (ret < 0) {
-        close(fd);
-        return -1;
-    }
-
-    sscanf(line, "%d %d ", &total, &rss);
-    close(fd);
-    return rss;
-}
-
-static char *proc_get_name(int pid) {
-    char path[PATH_MAX];
-    static char line[LINE_MAX];
-    int fd;
-    char *cp;
-    ssize_t ret;
-
-    /* gid containing AID_READPROC required */
-    snprintf(path, PATH_MAX, "/proc/%d/cmdline", pid);
-    fd = open(path, O_RDONLY | O_CLOEXEC);
-    if (fd == -1)
-        return NULL;
-    ret = read_all(fd, line, sizeof(line) - 1);
-    close(fd);
-    if (ret < 0) {
-        return NULL;
-    }
-
-    cp = strchr(line, ' ');
-    if (cp)
-        *cp = '\0';
-
-    return line;
-}
-
-static struct proc *proc_adj_lru(int oomadj) {
-    return (struct proc *)adjslot_tail(&procadjslot_list[ADJTOSLOT(oomadj)]);
-}
-
-static struct proc *proc_get_heaviest(int oomadj) {
-    struct adjslot_list *head = &procadjslot_list[ADJTOSLOT(oomadj)];
-    struct adjslot_list *curr = head->next;
-    struct proc *maxprocp = NULL;
-    int maxsize = 0;
-    while (curr != head) {
-        int pid = ((struct proc *)curr)->pid;
-        int tasksize = proc_get_size(pid);
-        if (tasksize <= 0) {
-            struct adjslot_list *next = curr->next;
-            pid_remove(pid);
-            curr = next;
-        } else {
-            if (tasksize > maxsize) {
-                maxsize = tasksize;
-                maxprocp = (struct proc *)curr;
-            }
-            curr = curr->next;
-        }
-    }
-    return maxprocp;
-}
-
-static void set_process_group_and_prio(int pid, SchedPolicy sp, int prio) {
-    DIR* d;
-    char proc_path[PATH_MAX];
-    struct dirent* de;
-
-    snprintf(proc_path, sizeof(proc_path), "/proc/%d/task", pid);
-    if (!(d = opendir(proc_path))) {
-        ALOGW("Failed to open %s; errno=%d: process pid(%d) might have died", proc_path, errno,
-              pid);
-        return;
-    }
-
-    while ((de = readdir(d))) {
-        int t_pid;
-
-        if (de->d_name[0] == '.') continue;
-        t_pid = atoi(de->d_name);
-
-        if (!t_pid) {
-            ALOGW("Failed to get t_pid for '%s' of pid(%d)", de->d_name, pid);
-            continue;
-        }
-
-        if (setpriority(PRIO_PROCESS, t_pid, prio) && errno != ESRCH) {
-            ALOGW("Unable to raise priority of killing t_pid (%d): errno=%d", t_pid, errno);
-        }
-
-        if (set_cpuset_policy(t_pid, sp)) {
-            ALOGW("Failed to set_cpuset_policy on pid(%d) t_pid(%d) to %d", pid, t_pid, (int)sp);
-            continue;
-        }
-    }
-    closedir(d);
-}
-
-static int last_killed_pid = -1;
-
-/* Kill one process specified by procp.  Returns the size of the process killed */
-static int kill_one_process(struct proc* procp, int min_oom_score) {
-    int pid = procp->pid;
-    uid_t uid = procp->uid;
-    int tgid;
-    char *taskname;
-    int tasksize;
-    int r;
-    int result = -1;
-
-#ifdef LMKD_LOG_STATS
-    struct memory_stat mem_st = {};
-    int memory_stat_parse_result = -1;
-#else
-    /* To prevent unused parameter warning */
-    (void)(min_oom_score);
-#endif
-
-    tgid = proc_get_tgid(pid);
-    if (tgid >= 0 && tgid != pid) {
-        ALOGE("Possible pid reuse detected (pid %d, tgid %d)!", pid, tgid);
-        goto out;
-    }
-
-    taskname = proc_get_name(pid);
-    if (!taskname) {
-        goto out;
-    }
-
-    tasksize = proc_get_size(pid);
-    if (tasksize <= 0) {
-        goto out;
-    }
-
-#ifdef LMKD_LOG_STATS
-    if (enable_stats_log) {
-        if (per_app_memcg) {
-            memory_stat_parse_result = memory_stat_from_cgroup(&mem_st, pid, uid);
-        } else {
-            memory_stat_parse_result = memory_stat_from_procfs(&mem_st, pid);
-        }
-    }
-#endif
-
-    TRACE_KILL_START(pid);
-
-    /* CAP_KILL required */
-    r = kill(pid, SIGKILL);
-
-    set_process_group_and_prio(pid, SP_FOREGROUND, ANDROID_PRIORITY_HIGHEST);
-
-    inc_killcnt(procp->oomadj);
-    ALOGE("Kill '%s' (%d), uid %d, oom_adj %d to free %ldkB", taskname, pid, uid, procp->oomadj,
-          tasksize * page_k);
-
-    TRACE_KILL_END();
-
-    last_killed_pid = pid;
-
-    if (r) {
-        ALOGE("kill(%d): errno=%d", pid, errno);
-        goto out;
-    } else {
-#ifdef LMKD_LOG_STATS
-        if (memory_stat_parse_result == 0) {
-            stats_write_lmk_kill_occurred(log_ctx, LMK_KILL_OCCURRED, uid, taskname,
-                    procp->oomadj, mem_st.pgfault, mem_st.pgmajfault, mem_st.rss_in_bytes,
-                    mem_st.cache_in_bytes, mem_st.swap_in_bytes, mem_st.process_start_time_ns,
-                    min_oom_score);
-        } else if (enable_stats_log) {
-            stats_write_lmk_kill_occurred(log_ctx, LMK_KILL_OCCURRED, uid, taskname, procp->oomadj,
-                                          -1, -1, tasksize * BYTES_IN_KILOBYTE, -1, -1, -1,
-                                          min_oom_score);
-        }
-#endif
-        result = tasksize;
-    }
-
-out:
-    /*
-     * WARNING: After pid_remove() procp is freed and can't be used!
-     * Therefore placed at the end of the function.
-     */
-    pid_remove(pid);
-    return result;
-}
-
-/*
- * Find one process to kill at or above the given oom_adj level.
- * Returns size of the killed process.
- */
-static int find_and_kill_process(int min_score_adj) {
-    int i;
-    int killed_size = 0;
-
-#ifdef LMKD_LOG_STATS
-    bool lmk_state_change_start = false;
-#endif
-
-    for (i = OOM_SCORE_ADJ_MAX; i >= min_score_adj; i--) {
-        struct proc *procp;
-
-        while (true) {
-            procp = kill_heaviest_task ?
-                proc_get_heaviest(i) : proc_adj_lru(i);
-
-            if (!procp)
-                break;
-
-            killed_size = kill_one_process(procp, min_score_adj);
-            if (killed_size >= 0) {
-#ifdef LMKD_LOG_STATS
-                if (enable_stats_log && !lmk_state_change_start) {
-                    lmk_state_change_start = true;
-                    stats_write_lmk_state_changed(log_ctx, LMK_STATE_CHANGED,
-                                                  LMK_STATE_CHANGE_START);
-                }
-#endif
-                break;
-            }
-        }
-        if (killed_size) {
-            break;
-        }
-    }
-
-#ifdef LMKD_LOG_STATS
-    if (enable_stats_log && lmk_state_change_start) {
-        stats_write_lmk_state_changed(log_ctx, LMK_STATE_CHANGED, LMK_STATE_CHANGE_STOP);
-    }
-#endif
-
-    return killed_size;
-}
-
-static int64_t get_memory_usage(struct reread_data *file_data) {
-    int ret;
-    int64_t mem_usage;
-    char buf[32];
-
-    if (reread_file(file_data, buf, sizeof(buf)) < 0) {
-        return -1;
-    }
-
-    if (!parse_int64(buf, &mem_usage)) {
-        ALOGE("%s parse error", file_data->filename);
-        return -1;
-    }
-    if (mem_usage == 0) {
-        ALOGE("No memory!");
-        return -1;
-    }
-    return mem_usage;
-}
-
-void record_low_pressure_levels(union meminfo *mi) {
-    if (low_pressure_mem.min_nr_free_pages == -1 ||
-        low_pressure_mem.min_nr_free_pages > mi->field.nr_free_pages) {
-        if (debug_process_killing) {
-            ALOGI("Low pressure min memory update from %" PRId64 " to %" PRId64,
-                low_pressure_mem.min_nr_free_pages, mi->field.nr_free_pages);
-        }
-        low_pressure_mem.min_nr_free_pages = mi->field.nr_free_pages;
-    }
-    /*
-     * Free memory at low vmpressure events occasionally gets spikes,
-     * possibly a stale low vmpressure event with memory already
-     * freed up (no memory pressure should have been reported).
-     * Ignore large jumps in max_nr_free_pages that would mess up our stats.
-     */
-    if (low_pressure_mem.max_nr_free_pages == -1 ||
-        (low_pressure_mem.max_nr_free_pages < mi->field.nr_free_pages &&
-         mi->field.nr_free_pages - low_pressure_mem.max_nr_free_pages <
-         low_pressure_mem.max_nr_free_pages * 0.1)) {
-        if (debug_process_killing) {
-            ALOGI("Low pressure max memory update from %" PRId64 " to %" PRId64,
-                low_pressure_mem.max_nr_free_pages, mi->field.nr_free_pages);
-        }
-        low_pressure_mem.max_nr_free_pages = mi->field.nr_free_pages;
-    }
-}
-
-enum vmpressure_level upgrade_level(enum vmpressure_level level) {
-    return (enum vmpressure_level)((level < VMPRESS_LEVEL_CRITICAL) ?
-        level + 1 : level);
-}
-
-enum vmpressure_level downgrade_level(enum vmpressure_level level) {
-    return (enum vmpressure_level)((level > VMPRESS_LEVEL_LOW) ?
-        level - 1 : level);
-}
-
-static bool is_kill_pending(void) {
-    char buf[24];
-
-    if (last_killed_pid < 0) {
-        return false;
-    }
-
-    snprintf(buf, sizeof(buf), "/proc/%d/", last_killed_pid);
-    if (access(buf, F_OK) == 0) {
-        return true;
-    }
-
-    // reset last killed PID because there's nothing pending
-    last_killed_pid = -1;
-    return false;
-}
-
-static void mp_event_common(int data, uint32_t events __unused) {
-    int ret;
-    unsigned long long evcount;
-    int64_t mem_usage, memsw_usage;
-    int64_t mem_pressure;
-    enum vmpressure_level lvl;
-    union meminfo mi;
-    union zoneinfo zi;
-    struct timespec curr_tm;
-    static struct timespec last_kill_tm;
-    static unsigned long kill_skip_count = 0;
-    enum vmpressure_level level = (enum vmpressure_level)data;
-    long other_free = 0, other_file = 0;
-    int min_score_adj;
-    int minfree = 0;
-    static struct reread_data mem_usage_file_data = {
-        .filename = MEMCG_MEMORY_USAGE,
-        .fd = -1,
-    };
-    static struct reread_data memsw_usage_file_data = {
-        .filename = MEMCG_MEMORYSW_USAGE,
-        .fd = -1,
-    };
-
-    if (debug_process_killing) {
-        ALOGI("%s memory pressure event is triggered", level_name[level]);
-    }
-
-    if (!use_psi_monitors) {
-        /*
-         * Check all event counters from low to critical
-         * and upgrade to the highest priority one. By reading
-         * eventfd we also reset the event counters.
-         */
-        for (lvl = VMPRESS_LEVEL_LOW; lvl < VMPRESS_LEVEL_COUNT; lvl++) {
-            if (mpevfd[lvl] != -1 &&
-                TEMP_FAILURE_RETRY(read(mpevfd[lvl],
-                                   &evcount, sizeof(evcount))) > 0 &&
-                evcount > 0 && lvl > level) {
-                level = lvl;
-            }
-        }
-    }
-
-    if (clock_gettime(CLOCK_MONOTONIC_COARSE, &curr_tm) != 0) {
-        ALOGE("Failed to get current time");
-        return;
-    }
-
-    if (kill_timeout_ms) {
-        // If we're within the timeout, see if there's pending reclaim work
-        // from the last killed process. If there is (as evidenced by
-        // /proc/<pid> continuing to exist), skip killing for now.
-        if ((get_time_diff_ms(&last_kill_tm, &curr_tm) < kill_timeout_ms) &&
-            (low_ram_device || is_kill_pending())) {
-            kill_skip_count++;
-            return;
-        }
-    }
-
-    if (kill_skip_count > 0) {
-        ALOGI("%lu memory pressure events were skipped after a kill!",
-              kill_skip_count);
-        kill_skip_count = 0;
-    }
-
-    if (meminfo_parse(&mi) < 0 || zoneinfo_parse(&zi) < 0) {
-        ALOGE("Failed to get free memory!");
-        return;
-    }
-
-    if (use_minfree_levels) {
-        int i;
-
-        other_free = mi.field.nr_free_pages - zi.field.totalreserve_pages;
-        if (mi.field.nr_file_pages > (mi.field.shmem + mi.field.unevictable + mi.field.swap_cached)) {
-            other_file = (mi.field.nr_file_pages - mi.field.shmem -
-                          mi.field.unevictable - mi.field.swap_cached);
-        } else {
-            other_file = 0;
-        }
-
-        min_score_adj = OOM_SCORE_ADJ_MAX + 1;
-        for (i = 0; i < lowmem_targets_size; i++) {
-            minfree = lowmem_minfree[i];
-            if (other_free < minfree && other_file < minfree) {
-                min_score_adj = lowmem_adj[i];
-                break;
-            }
-        }
-
-        if (min_score_adj == OOM_SCORE_ADJ_MAX + 1) {
-            if (debug_process_killing) {
-                ALOGI("Ignore %s memory pressure event "
-                      "(free memory=%ldkB, cache=%ldkB, limit=%ldkB)",
-                      level_name[level], other_free * page_k, other_file * page_k,
-                      (long)lowmem_minfree[lowmem_targets_size - 1] * page_k);
-            }
-            return;
-        }
-
-        goto do_kill;
-    }
-
-    if (level == VMPRESS_LEVEL_LOW) {
-        record_low_pressure_levels(&mi);
-    }
-
-    if (level_oomadj[level] > OOM_SCORE_ADJ_MAX) {
-        /* Do not monitor this pressure level */
-        return;
-    }
-
-    if ((mem_usage = get_memory_usage(&mem_usage_file_data)) < 0) {
-        goto do_kill;
-    }
-    if ((memsw_usage = get_memory_usage(&memsw_usage_file_data)) < 0) {
-        goto do_kill;
-    }
-
-    // Calculate percent for swappinness.
-    mem_pressure = (mem_usage * 100) / memsw_usage;
-
-    if (enable_pressure_upgrade && level != VMPRESS_LEVEL_CRITICAL) {
-        // We are swapping too much.
-        if (mem_pressure < upgrade_pressure) {
-            level = upgrade_level(level);
-            if (debug_process_killing) {
-                ALOGI("Event upgraded to %s", level_name[level]);
-            }
-        }
-    }
-
-    // If we still have enough swap space available, check if we want to
-    // ignore/downgrade pressure events.
-    if (mi.field.free_swap >=
-        mi.field.total_swap * swap_free_low_percentage / 100) {
-        // If the pressure is larger than downgrade_pressure lmk will not
-        // kill any process, since enough memory is available.
-        if (mem_pressure > downgrade_pressure) {
-            if (debug_process_killing) {
-                ALOGI("Ignore %s memory pressure", level_name[level]);
-            }
-            return;
-        } else if (level == VMPRESS_LEVEL_CRITICAL && mem_pressure > upgrade_pressure) {
-            if (debug_process_killing) {
-                ALOGI("Downgrade critical memory pressure");
-            }
-            // Downgrade event, since enough memory available.
-            level = downgrade_level(level);
-        }
-    }
-
-do_kill:
-    if (low_ram_device) {
-        /* For Go devices kill only one task */
-        if (find_and_kill_process(level_oomadj[level]) == 0) {
-            if (debug_process_killing) {
-                ALOGI("Nothing to kill");
-            }
-        } else {
-            meminfo_log(&mi);
-        }
-    } else {
-        int pages_freed;
-        static struct timespec last_report_tm;
-        static unsigned long report_skip_count = 0;
-
-        if (!use_minfree_levels) {
-            /* Free up enough memory to downgrate the memory pressure to low level */
-            if (mi.field.nr_free_pages >= low_pressure_mem.max_nr_free_pages) {
-                if (debug_process_killing) {
-                    ALOGI("Ignoring pressure since more memory is "
-                        "available (%" PRId64 ") than watermark (%" PRId64 ")",
-                        mi.field.nr_free_pages, low_pressure_mem.max_nr_free_pages);
-                }
-                return;
-            }
-            min_score_adj = level_oomadj[level];
-        }
-
-        pages_freed = find_and_kill_process(min_score_adj);
-
-        if (pages_freed == 0) {
-            /* Rate limit kill reports when nothing was reclaimed */
-            if (get_time_diff_ms(&last_report_tm, &curr_tm) < FAIL_REPORT_RLIMIT_MS) {
-                report_skip_count++;
-                return;
-            }
-        } else {
-            /* If we killed anything, update the last killed timestamp. */
-            last_kill_tm = curr_tm;
-        }
-
-        /* Log meminfo whenever we kill or when report rate limit allows */
-        meminfo_log(&mi);
-
-        if (use_minfree_levels) {
-            ALOGI("Reclaimed %ldkB, cache(%ldkB) and "
-                "free(%" PRId64 "kB)-reserved(%" PRId64 "kB) below min(%ldkB) for oom_adj %d",
-                pages_freed * page_k,
-                other_file * page_k, mi.field.nr_free_pages * page_k,
-                zi.field.totalreserve_pages * page_k,
-                minfree * page_k, min_score_adj);
-        } else {
-            ALOGI("Reclaimed %ldkB at oom_adj %d",
-                pages_freed * page_k, min_score_adj);
-        }
-
-        if (report_skip_count > 0) {
-            ALOGI("Suppressed %lu failed kill reports", report_skip_count);
-            report_skip_count = 0;
-        }
-
-        last_report_tm = curr_tm;
-    }
-}
-
-static bool init_mp_psi(enum vmpressure_level level) {
-    int fd = init_psi_monitor(psi_thresholds[level].stall_type,
-        psi_thresholds[level].threshold_ms * US_PER_MS,
-        PSI_WINDOW_SIZE_MS * US_PER_MS);
-
-    if (fd < 0) {
-        return false;
-    }
-
-    vmpressure_hinfo[level].handler = mp_event_common;
-    vmpressure_hinfo[level].data = level;
-    if (register_psi_monitor(epollfd, fd, &vmpressure_hinfo[level]) < 0) {
-        destroy_psi_monitor(fd);
-        return false;
-    }
-    maxevents++;
-    mpevfd[level] = fd;
-
-    return true;
-}
-
-static void destroy_mp_psi(enum vmpressure_level level) {
-    int fd = mpevfd[level];
-
-    if (unregister_psi_monitor(epollfd, fd) < 0) {
-        ALOGE("Failed to unregister psi monitor for %s memory pressure; errno=%d",
-            level_name[level], errno);
-    }
-    destroy_psi_monitor(fd);
-    mpevfd[level] = -1;
-}
-
-static bool init_psi_monitors() {
-    if (!init_mp_psi(VMPRESS_LEVEL_LOW)) {
-        return false;
-    }
-    if (!init_mp_psi(VMPRESS_LEVEL_MEDIUM)) {
-        destroy_mp_psi(VMPRESS_LEVEL_LOW);
-        return false;
-    }
-    if (!init_mp_psi(VMPRESS_LEVEL_CRITICAL)) {
-        destroy_mp_psi(VMPRESS_LEVEL_MEDIUM);
-        destroy_mp_psi(VMPRESS_LEVEL_LOW);
-        return false;
-    }
-    return true;
-}
-
-static bool init_mp_common(enum vmpressure_level level) {
-    int mpfd;
-    int evfd;
-    int evctlfd;
-    char buf[256];
-    struct epoll_event epev;
-    int ret;
-    int level_idx = (int)level;
-    const char *levelstr = level_name[level_idx];
-
-    /* gid containing AID_SYSTEM required */
-    mpfd = open(MEMCG_SYSFS_PATH "memory.pressure_level", O_RDONLY | O_CLOEXEC);
-    if (mpfd < 0) {
-        ALOGI("No kernel memory.pressure_level support (errno=%d)", errno);
-        goto err_open_mpfd;
-    }
-
-    evctlfd = open(MEMCG_SYSFS_PATH "cgroup.event_control", O_WRONLY | O_CLOEXEC);
-    if (evctlfd < 0) {
-        ALOGI("No kernel memory cgroup event control (errno=%d)", errno);
-        goto err_open_evctlfd;
-    }
-
-    evfd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
-    if (evfd < 0) {
-        ALOGE("eventfd failed for level %s; errno=%d", levelstr, errno);
-        goto err_eventfd;
-    }
-
-    ret = snprintf(buf, sizeof(buf), "%d %d %s", evfd, mpfd, levelstr);
-    if (ret >= (ssize_t)sizeof(buf)) {
-        ALOGE("cgroup.event_control line overflow for level %s", levelstr);
-        goto err;
-    }
-
-    ret = TEMP_FAILURE_RETRY(write(evctlfd, buf, strlen(buf) + 1));
-    if (ret == -1) {
-        ALOGE("cgroup.event_control write failed for level %s; errno=%d",
-              levelstr, errno);
-        goto err;
-    }
-
-    epev.events = EPOLLIN;
-    /* use data to store event level */
-    vmpressure_hinfo[level_idx].data = level_idx;
-    vmpressure_hinfo[level_idx].handler = mp_event_common;
-    epev.data.ptr = (void *)&vmpressure_hinfo[level_idx];
-    ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, evfd, &epev);
-    if (ret == -1) {
-        ALOGE("epoll_ctl for level %s failed; errno=%d", levelstr, errno);
-        goto err;
-    }
-    maxevents++;
-    mpevfd[level] = evfd;
-    close(evctlfd);
-    return true;
-
-err:
-    close(evfd);
-err_eventfd:
-    close(evctlfd);
-err_open_evctlfd:
-    close(mpfd);
-err_open_mpfd:
-    return false;
-}
-
-static int init(void) {
-    struct epoll_event epev;
-    int i;
-    int ret;
-
-    page_k = sysconf(_SC_PAGESIZE);
-    if (page_k == -1)
-        page_k = PAGE_SIZE;
-    page_k /= 1024;
-
-    epollfd = epoll_create(MAX_EPOLL_EVENTS);
-    if (epollfd == -1) {
-        ALOGE("epoll_create failed (errno=%d)", errno);
-        return -1;
-    }
-
-    // mark data connections as not connected
-    for (int i = 0; i < MAX_DATA_CONN; i++) {
-        data_sock[i].sock = -1;
-    }
-
-    ctrl_sock.sock = android_get_control_socket("lmkd");
-    if (ctrl_sock.sock < 0) {
-        ALOGE("get lmkd control socket failed");
-        return -1;
-    }
-
-    ret = listen(ctrl_sock.sock, MAX_DATA_CONN);
-    if (ret < 0) {
-        ALOGE("lmkd control socket listen failed (errno=%d)", errno);
-        return -1;
-    }
-
-    epev.events = EPOLLIN;
-    ctrl_sock.handler_info.handler = ctrl_connect_handler;
-    epev.data.ptr = (void *)&(ctrl_sock.handler_info);
-    if (epoll_ctl(epollfd, EPOLL_CTL_ADD, ctrl_sock.sock, &epev) == -1) {
-        ALOGE("epoll_ctl for lmkd control socket failed (errno=%d)", errno);
-        return -1;
-    }
-    maxevents++;
-
-    has_inkernel_module = !access(INKERNEL_MINFREE_PATH, W_OK);
-    use_inkernel_interface = has_inkernel_module;
-
-    if (use_inkernel_interface) {
-        ALOGI("Using in-kernel low memory killer interface");
-    } else {
-        /* Try to use psi monitor first if kernel has it */
-        use_psi_monitors = property_get_bool("ro.lmk.use_psi", true) &&
-            init_psi_monitors();
-        /* Fall back to vmpressure */
-        if (!use_psi_monitors &&
-            (!init_mp_common(VMPRESS_LEVEL_LOW) ||
-            !init_mp_common(VMPRESS_LEVEL_MEDIUM) ||
-            !init_mp_common(VMPRESS_LEVEL_CRITICAL))) {
-            ALOGE("Kernel does not support memory pressure events or in-kernel low memory killer");
-            return -1;
-        }
-        if (use_psi_monitors) {
-            ALOGI("Using psi monitors for memory pressure detection");
-        } else {
-            ALOGI("Using vmpressure for memory pressure detection");
-        }
-    }
-
-    for (i = 0; i <= ADJTOSLOT(OOM_SCORE_ADJ_MAX); i++) {
-        procadjslot_list[i].next = &procadjslot_list[i];
-        procadjslot_list[i].prev = &procadjslot_list[i];
-    }
-
-    memset(killcnt_idx, KILLCNT_INVALID_IDX, sizeof(killcnt_idx));
-
-    return 0;
-}
-
-static void mainloop(void) {
-    struct event_handler_info* handler_info;
-    struct event_handler_info* poll_handler = NULL;
-    struct timespec last_report_tm, curr_tm;
-    struct epoll_event *evt;
-    long delay = -1;
-    int polling = 0;
-
-    while (1) {
-        struct epoll_event events[maxevents];
-        int nevents;
-        int i;
-
-        if (polling) {
-            /* Calculate next timeout */
-            clock_gettime(CLOCK_MONOTONIC_COARSE, &curr_tm);
-            delay = get_time_diff_ms(&last_report_tm, &curr_tm);
-            delay = (delay < PSI_POLL_PERIOD_MS) ?
-                PSI_POLL_PERIOD_MS - delay : PSI_POLL_PERIOD_MS;
-
-            /* Wait for events until the next polling timeout */
-            nevents = epoll_wait(epollfd, events, maxevents, delay);
-
-            clock_gettime(CLOCK_MONOTONIC_COARSE, &curr_tm);
-            if (get_time_diff_ms(&last_report_tm, &curr_tm) >= PSI_POLL_PERIOD_MS) {
-                polling--;
-                poll_handler->handler(poll_handler->data, 0);
-                last_report_tm = curr_tm;
-            }
-        } else {
-            /* Wait for events with no timeout */
-            nevents = epoll_wait(epollfd, events, maxevents, -1);
-        }
-
-        if (nevents == -1) {
-            if (errno == EINTR)
-                continue;
-            ALOGE("epoll_wait failed (errno=%d)", errno);
-            continue;
-        }
-
-        /*
-         * First pass to see if any data socket connections were dropped.
-         * Dropped connection should be handled before any other events
-         * to deallocate data connection and correctly handle cases when
-         * connection gets dropped and reestablished in the same epoll cycle.
-         * In such cases it's essential to handle connection closures first.
-         */
-        for (i = 0, evt = &events[0]; i < nevents; ++i, evt++) {
-            if ((evt->events & EPOLLHUP) && evt->data.ptr) {
-                ALOGI("lmkd data connection dropped");
-                handler_info = (struct event_handler_info*)evt->data.ptr;
-                ctrl_data_close(handler_info->data);
-            }
-        }
-
-        /* Second pass to handle all other events */
-        for (i = 0, evt = &events[0]; i < nevents; ++i, evt++) {
-            if (evt->events & EPOLLERR)
-                ALOGD("EPOLLERR on event #%d", i);
-            if (evt->events & EPOLLHUP) {
-                /* This case was handled in the first pass */
-                continue;
-            }
-            if (evt->data.ptr) {
-                handler_info = (struct event_handler_info*)evt->data.ptr;
-                handler_info->handler(handler_info->data, evt->events);
-
-                if (use_psi_monitors && handler_info->handler == mp_event_common) {
-                    /*
-                     * Poll for the duration of PSI_WINDOW_SIZE_MS after the
-                     * initial PSI event because psi events are rate-limited
-                     * at one per sec.
-                     */
-                    polling = PSI_POLL_COUNT;
-                    poll_handler = handler_info;
-                    clock_gettime(CLOCK_MONOTONIC_COARSE, &last_report_tm);
-                }
-            }
-        }
-    }
-}
-
-int main(int argc __unused, char **argv __unused) {
-    struct sched_param param = {
-            .sched_priority = 1,
-    };
-
-    /* By default disable low level vmpressure events */
-    level_oomadj[VMPRESS_LEVEL_LOW] =
-        property_get_int32("ro.lmk.low", OOM_SCORE_ADJ_MAX + 1);
-    level_oomadj[VMPRESS_LEVEL_MEDIUM] =
-        property_get_int32("ro.lmk.medium", 800);
-    level_oomadj[VMPRESS_LEVEL_CRITICAL] =
-        property_get_int32("ro.lmk.critical", 0);
-    debug_process_killing = property_get_bool("ro.lmk.debug", false);
-
-    /* By default disable upgrade/downgrade logic */
-    enable_pressure_upgrade =
-        property_get_bool("ro.lmk.critical_upgrade", false);
-    upgrade_pressure =
-        (int64_t)property_get_int32("ro.lmk.upgrade_pressure", 100);
-    downgrade_pressure =
-        (int64_t)property_get_int32("ro.lmk.downgrade_pressure", 100);
-    kill_heaviest_task =
-        property_get_bool("ro.lmk.kill_heaviest_task", false);
-    low_ram_device = property_get_bool("ro.config.low_ram", false);
-    kill_timeout_ms =
-        (unsigned long)property_get_int32("ro.lmk.kill_timeout_ms", 0);
-    use_minfree_levels =
-        property_get_bool("ro.lmk.use_minfree_levels", false);
-    per_app_memcg =
-        property_get_bool("ro.config.per_app_memcg", low_ram_device);
-    swap_free_low_percentage =
-        property_get_int32("ro.lmk.swap_free_low_percentage", 10);
-
-    ctx = create_android_logger(MEMINFO_LOG_TAG);
-
-#ifdef LMKD_LOG_STATS
-    statslog_init(&log_ctx, &enable_stats_log);
-#endif
-
-    if (!init()) {
-        if (!use_inkernel_interface) {
-            /*
-             * MCL_ONFAULT pins pages as they fault instead of loading
-             * everything immediately all at once. (Which would be bad,
-             * because as of this writing, we have a lot of mapped pages we
-             * never use.) Old kernels will see MCL_ONFAULT and fail with
-             * EINVAL; we ignore this failure.
-             *
-             * N.B. read the man page for mlockall. MCL_CURRENT | MCL_ONFAULT
-             * pins ⊆ MCL_CURRENT, converging to just MCL_CURRENT as we fault
-             * in pages.
-             */
-            /* CAP_IPC_LOCK required */
-            if (mlockall(MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT) && (errno != EINVAL)) {
-                ALOGW("mlockall failed %s", strerror(errno));
-            }
-
-            /* CAP_NICE required */
-            if (sched_setscheduler(0, SCHED_FIFO, &param)) {
-                ALOGW("set SCHED_FIFO failed %s", strerror(errno));
-            }
-        }
-
-        mainloop();
-    }
-
-#ifdef LMKD_LOG_STATS
-    statslog_destroy(&log_ctx);
-#endif
-
-    android_log_destroy(&ctx);
-
-    ALOGI("exiting");
-    return 0;
-}
diff --git a/lmkd/lmkd.rc b/lmkd/lmkd.rc
deleted file mode 100644
index 76b6055..0000000
--- a/lmkd/lmkd.rc
+++ /dev/null
@@ -1,8 +0,0 @@
-service lmkd /system/bin/lmkd
-    class core
-    user lmkd
-    group lmkd system readproc
-    capabilities DAC_OVERRIDE KILL IPC_LOCK SYS_NICE SYS_RESOURCE
-    critical
-    socket lmkd seqpacket 0660 system system
-    writepid /dev/cpuset/system-background/tasks
diff --git a/lmkd/statslog.c b/lmkd/statslog.c
deleted file mode 100644
index 0c230ae..0000000
--- a/lmkd/statslog.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- *  Copyright 2018 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#include <assert.h>
-#include <errno.h>
-#include <log/log_id.h>
-#include <stats_event_list.h>
-#include <time.h>
-
-static int64_t getElapsedRealTimeNs() {
-    struct timespec t;
-    t.tv_sec = t.tv_nsec = 0;
-    clock_gettime(CLOCK_BOOTTIME, &t);
-    return (int64_t)t.tv_sec * 1000000000LL + t.tv_nsec;
-}
-
-/**
- * Logs the change in LMKD state which is used as start/stop boundaries for logging
- * LMK_KILL_OCCURRED event.
- * Code: LMK_STATE_CHANGED = 54
- */
-int
-stats_write_lmk_state_changed(android_log_context ctx, int32_t code, int32_t state) {
-    assert(ctx != NULL);
-    int ret = -EINVAL;
-    if (!ctx) {
-        return ret;
-    }
-
-    reset_log_context(ctx);
-
-    if ((ret = android_log_write_int64(ctx, getElapsedRealTimeNs())) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int32(ctx, code)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int32(ctx, state)) < 0) {
-        return ret;
-    }
-
-    return write_to_logger(ctx, LOG_ID_STATS);
-}
-
-/**
- * Logs the event when LMKD kills a process to reduce memory pressure.
- * Code: LMK_KILL_OCCURRED = 51
- */
-int
-stats_write_lmk_kill_occurred(android_log_context ctx, int32_t code, int32_t uid,
-                              char const* process_name, int32_t oom_score, int64_t pgfault,
-                              int64_t pgmajfault, int64_t rss_in_bytes, int64_t cache_in_bytes,
-                              int64_t swap_in_bytes, int64_t process_start_time_ns,
-                              int32_t min_oom_score) {
-    assert(ctx != NULL);
-    int ret = -EINVAL;
-    if (!ctx) {
-        return ret;
-    }
-    reset_log_context(ctx);
-
-    if ((ret = android_log_write_int64(ctx, getElapsedRealTimeNs())) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int32(ctx, code)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int32(ctx, uid)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_string8(ctx, (process_name == NULL) ? "" : process_name)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int32(ctx, oom_score)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int64(ctx, pgfault)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int64(ctx, pgmajfault)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int64(ctx, rss_in_bytes)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int64(ctx, cache_in_bytes)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int64(ctx, swap_in_bytes)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int64(ctx, process_start_time_ns)) < 0) {
-        return ret;
-    }
-
-    if ((ret = android_log_write_int32(ctx, min_oom_score)) < 0) {
-        return ret;
-    }
-
-    return write_to_logger(ctx, LOG_ID_STATS);
-}
diff --git a/lmkd/statslog.h b/lmkd/statslog.h
deleted file mode 100644
index 2edba7a..0000000
--- a/lmkd/statslog.h
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- *  Copyright 2018 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#ifndef _STATSLOG_H_
-#define _STATSLOG_H_
-
-#include <assert.h>
-#include <stats_event_list.h>
-#include <stdbool.h>
-#include <sys/cdefs.h>
-
-#include <cutils/properties.h>
-
-__BEGIN_DECLS
-
-/*
- * These are defined in
- * http://cs/android/frameworks/base/cmds/statsd/src/atoms.proto
- */
-#define LMK_KILL_OCCURRED 51
-#define LMK_STATE_CHANGED 54
-#define LMK_STATE_CHANGE_START 1
-#define LMK_STATE_CHANGE_STOP 2
-
-/*
- * The single event tag id for all stats logs.
- * Keep this in sync with system/core/logcat/event.logtags
- */
-const static int kStatsEventTag = 1937006964;
-
-static inline void statslog_init(android_log_context* log_ctx, bool* enable_stats_log) {
-    assert(log_ctx != NULL);
-    assert(enable_stats_log != NULL);
-    *enable_stats_log = property_get_bool("ro.lmk.log_stats", false);
-
-    if (*enable_stats_log) {
-        *log_ctx = create_android_logger(kStatsEventTag);
-    }
-}
-
-static inline void statslog_destroy(android_log_context* log_ctx) {
-    assert(log_ctx != NULL);
-    if (*log_ctx) {
-        android_log_destroy(log_ctx);
-    }
-}
-
-struct memory_stat {
-    int64_t pgfault;
-    int64_t pgmajfault;
-    int64_t rss_in_bytes;
-    int64_t cache_in_bytes;
-    int64_t swap_in_bytes;
-    int64_t process_start_time_ns;
-};
-
-#define MEMCG_PROCESS_MEMORY_STAT_PATH "/dev/memcg/apps/uid_%u/pid_%u/memory.stat"
-#define PROC_STAT_FILE_PATH "/proc/%d/stat"
-#define PROC_STAT_BUFFER_SIZE 1024
-#define BYTES_IN_KILOBYTE 1024
-
-/**
- * Logs the change in LMKD state which is used as start/stop boundaries for logging
- * LMK_KILL_OCCURRED event.
- * Code: LMK_STATE_CHANGED = 54
- */
-int
-stats_write_lmk_state_changed(android_log_context ctx, int32_t code, int32_t state);
-
-/**
- * Logs the event when LMKD kills a process to reduce memory pressure.
- * Code: LMK_KILL_OCCURRED = 51
- */
-int
-stats_write_lmk_kill_occurred(android_log_context ctx, int32_t code, int32_t uid,
-                              char const* process_name, int32_t oom_score, int64_t pgfault,
-                              int64_t pgmajfault, int64_t rss_in_bytes, int64_t cache_in_bytes,
-                              int64_t swap_in_bytes, int64_t process_start_time_ns,
-                              int32_t min_oom_score);
-
-__END_DECLS
-
-#endif /* _STATSLOG_H_ */
diff --git a/lmkd/tests/Android.bp b/lmkd/tests/Android.bp
deleted file mode 100644
index 4e845fd..0000000
--- a/lmkd/tests/Android.bp
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-cc_test {
-    name: "lmkd_unit_test",
-
-    shared_libs: [
-        "libbase",
-        "liblog",
-        "libcutils",
-    ],
-
-    static_libs: [
-        "liblmkd_utils",
-    ],
-
-    target: {
-        android: {
-            srcs: ["lmkd_test.cpp"],
-        },
-    },
-
-    cflags: [
-        "-Wall",
-        "-Wextra",
-        "-Werror",
-    ],
-
-    compile_multilib: "first",
-}
diff --git a/lmkd/tests/lmkd_test.cpp b/lmkd/tests/lmkd_test.cpp
deleted file mode 100644
index f54b25c..0000000
--- a/lmkd/tests/lmkd_test.cpp
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <sstream>
-#include <stdio.h>
-#include <string.h>
-#include <string>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <gtest/gtest.h>
-#include <lmkd.h>
-#include <liblmkd_utils.h>
-#include <log/log_properties.h>
-#include <private/android_filesystem_config.h>
-
-using namespace android::base;
-
-#define INKERNEL_MINFREE_PATH "/sys/module/lowmemorykiller/parameters/minfree"
-#define LMKDTEST_RESPAWN_FLAG "LMKDTEST_RESPAWN"
-
-#define LMKD_LOGCAT_MARKER "lowmemorykiller"
-#define LMKD_KILL_MARKER_TEMPLATE LMKD_LOGCAT_MARKER ": Kill '%s'"
-#define OOM_MARKER "Out of memory"
-#define OOM_KILL_MARKER "Killed process"
-#define MIN_LOG_SIZE 100
-
-#define ONE_MB (1 << 20)
-
-/* Test constant parameters */
-#define OOM_ADJ_MAX 1000
-#define OOM_ADJ_MIN 0
-#define OOM_ADJ_STEP 100
-#define STEP_COUNT ((OOM_ADJ_MAX - OOM_ADJ_MIN) / OOM_ADJ_STEP + 1)
-
-#define ALLOC_STEP (ONE_MB)
-#define ALLOC_DELAY 1000
-
-/* Utility functions */
-std::string readCommand(const std::string& command) {
-    FILE* fp = popen(command.c_str(), "r");
-    std::string content;
-    ReadFdToString(fileno(fp), &content);
-    pclose(fp);
-    return content;
-}
-
-std::string readLogcat(const std::string& marker) {
-    std::string content = readCommand("logcat -d -b all");
-    size_t pos = content.find(marker);
-    if (pos == std::string::npos) return "";
-    content.erase(0, pos);
-    return content;
-}
-
-bool writeFile(const std::string& file, const std::string& string) {
-    if (getuid() == static_cast<unsigned>(AID_ROOT)) {
-        return WriteStringToFile(string, file);
-    }
-    return string == readCommand(
-        "echo -n '" + string + "' | su root tee " + file + " 2>&1");
-}
-
-bool writeKmsg(const std::string& marker) {
-    return writeFile("/dev/kmsg", marker);
-}
-
-std::string getTextAround(const std::string& text, size_t pos,
-                          size_t lines_before, size_t lines_after) {
-    size_t start_pos = pos;
-
-    // find start position
-    // move up lines_before number of lines
-    while (lines_before > 0 &&
-           (start_pos = text.rfind('\n', start_pos)) != std::string::npos) {
-        lines_before--;
-    }
-    // move to the beginning of the line
-    start_pos = text.rfind('\n', start_pos);
-    start_pos = (start_pos == std::string::npos) ? 0 : start_pos + 1;
-
-    // find end position
-    // move down lines_after number of lines
-    while (lines_after > 0 &&
-           (pos = text.find('\n', pos)) != std::string::npos) {
-        pos++;
-        lines_after--;
-    }
-    return text.substr(start_pos, (pos == std::string::npos) ?
-                       std::string::npos : pos - start_pos);
-}
-
-bool getExecPath(std::string &path) {
-    char buf[PATH_MAX + 1];
-    int ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
-    if (ret < 0) {
-        return false;
-    }
-    buf[ret] = '\0';
-    path = buf;
-    return true;
-}
-
-/* Child synchronization primitives */
-#define STATE_INIT 0
-#define STATE_CHILD_READY 1
-#define STATE_PARENT_READY 2
-
-struct state_sync {
-    pthread_mutex_t mutex;
-    pthread_cond_t condition;
-    int state;
-};
-
-struct state_sync * init_state_sync_obj() {
-    struct state_sync *ssync;
-
-    ssync = (struct state_sync*)mmap(NULL, sizeof(struct state_sync),
-                PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, -1, 0);
-    if (ssync == MAP_FAILED) {
-        return NULL;
-    }
-
-    pthread_mutexattr_t mattr;
-    pthread_mutexattr_init(&mattr);
-    pthread_mutexattr_setpshared(&mattr, PTHREAD_PROCESS_SHARED);
-    pthread_mutex_init(&ssync->mutex, &mattr);
-
-    pthread_condattr_t cattr;
-    pthread_condattr_init(&cattr);
-    pthread_condattr_setpshared(&cattr, PTHREAD_PROCESS_SHARED);
-    pthread_cond_init(&ssync->condition, &cattr);
-
-    ssync->state = STATE_INIT;
-    return ssync;
-}
-
-void destroy_state_sync_obj(struct state_sync *ssync) {
-    pthread_cond_destroy(&ssync->condition);
-    pthread_mutex_destroy(&ssync->mutex);
-    munmap(ssync, sizeof(struct state_sync));
-}
-
-void signal_state(struct state_sync *ssync, int state) {
-    pthread_mutex_lock(&ssync->mutex);
-    ssync->state = state;
-    pthread_cond_signal(&ssync->condition);
-    pthread_mutex_unlock(&ssync->mutex);
-}
-
-void wait_for_state(struct state_sync *ssync, int state) {
-    pthread_mutex_lock(&ssync->mutex);
-    while (ssync->state != state) {
-        pthread_cond_wait(&ssync->condition, &ssync->mutex);
-    }
-    pthread_mutex_unlock(&ssync->mutex);
-}
-
-/* Memory allocation and data sharing */
-struct shared_data {
-    size_t allocated;
-    bool finished;
-    size_t total_size;
-    size_t step_size;
-    size_t step_delay;
-    int oomadj;
-};
-
-volatile void *gptr;
-void add_pressure(struct shared_data *data) {
-    volatile void *ptr;
-    size_t allocated_size = 0;
-
-    data->finished = false;
-    while (allocated_size < data->total_size) {
-        ptr = mmap(NULL, data->step_size, PROT_READ | PROT_WRITE,
-                MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
-        if (ptr != MAP_FAILED) {
-            /* create ptr aliasing to prevent compiler optimizing the access */
-            gptr = ptr;
-            /* make data non-zero */
-            memset((void*)ptr, (int)(allocated_size + 1), data->step_size);
-            allocated_size += data->step_size;
-            data->allocated = allocated_size;
-        }
-        usleep(data->step_delay);
-    }
-    data->finished = (allocated_size >= data->total_size);
-}
-
-/* Memory stress test main body */
-void runMemStressTest() {
-    struct shared_data *data;
-    struct state_sync *ssync;
-    int sock;
-    pid_t pid;
-    uid_t uid = getuid();
-
-    // check if in-kernel LMK driver is present
-    if (!access(INKERNEL_MINFREE_PATH, W_OK)) {
-        GTEST_LOG_(INFO) << "Must not have kernel lowmemorykiller driver,"
-                         << " terminating test";
-        return;
-    }
-
-    ASSERT_FALSE((sock = lmkd_connect()) < 0)
-        << "Failed to connect to lmkd process, err=" << strerror(errno);
-
-    /* allocate shared memory to communicate params with a child */
-    data = (struct shared_data*)mmap(NULL, sizeof(struct shared_data),
-                PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, -1, 0);
-    ASSERT_FALSE(data == MAP_FAILED) << "Memory allocation failure";
-    data->total_size = (size_t)-1; /* allocate until killed */
-    data->step_size = ALLOC_STEP;
-    data->step_delay = ALLOC_DELAY;
-
-    /* allocate state sync object */
-    ASSERT_FALSE((ssync = init_state_sync_obj()) == NULL)
-        << "Memory allocation failure";
-
-    /* run the test gradually decreasing oomadj */
-    data->oomadj = OOM_ADJ_MAX;
-    while (data->oomadj >= OOM_ADJ_MIN) {
-        ASSERT_FALSE((pid = fork()) < 0)
-            << "Failed to spawn a child process, err=" << strerror(errno);
-        if (pid != 0) {
-            /* Parent */
-            struct lmk_procprio params;
-            /* wait for child to start and get ready */
-            wait_for_state(ssync, STATE_CHILD_READY);
-            params.pid = pid;
-            params.uid = uid;
-            params.oomadj = data->oomadj;
-            ASSERT_FALSE(lmkd_register_proc(sock, &params) < 0)
-                << "Failed to communicate with lmkd, err=" << strerror(errno);
-            // signal the child it can proceed
-            signal_state(ssync, STATE_PARENT_READY);
-            waitpid(pid, NULL, 0);
-            if (data->finished) {
-                GTEST_LOG_(INFO) << "Child [pid=" << pid << "] allocated "
-                                 << data->allocated / ONE_MB << "MB";
-            } else {
-                GTEST_LOG_(INFO) << "Child [pid=" << pid << "] allocated "
-                                 << data->allocated / ONE_MB
-                                 << "MB before being killed";
-            }
-            data->oomadj -= OOM_ADJ_STEP;
-        } else {
-            /* Child */
-            pid = getpid();
-            GTEST_LOG_(INFO) << "Child [pid=" << pid
-                             << "] is running at oomadj="
-                             << data->oomadj;
-            data->allocated = 0;
-            data->finished = false;
-            ASSERT_FALSE(create_memcg(uid, pid) != 0)
-                << "Child [pid=" << pid << "] failed to create a cgroup";
-            signal_state(ssync, STATE_CHILD_READY);
-            wait_for_state(ssync, STATE_PARENT_READY);
-            add_pressure(data);
-            /* should not reach here, child should be killed by OOM/LMK */
-            FAIL() << "Child [pid=" << pid << "] was not killed";
-            break;
-        }
-    }
-    destroy_state_sync_obj(ssync);
-    munmap(data, sizeof(struct shared_data));
-    close(sock);
-}
-
-TEST(lmkd, check_for_oom) {
-    // test requirements
-    //   userdebug build
-    if (!__android_log_is_debuggable()) {
-        GTEST_LOG_(INFO) << "Must be userdebug build, terminating test";
-        return;
-    }
-
-    // if respawned test process then run the test and exit (no analysis)
-    if (getenv(LMKDTEST_RESPAWN_FLAG) != NULL) {
-        runMemStressTest();
-        return;
-    }
-
-    // Main test process
-    // mark the beginning of the test
-    std::string marker = StringPrintf(
-        "LMKD test start %lu\n", static_cast<unsigned long>(time(nullptr)));
-    ASSERT_TRUE(writeKmsg(marker));
-
-    // get executable complete path
-    std::string test_path;
-    ASSERT_TRUE(getExecPath(test_path));
-
-    std::string test_output;
-    if (getuid() != static_cast<unsigned>(AID_ROOT)) {
-        // if not root respawn itself as root and capture output
-        std::string command = StringPrintf(
-            "%s=true su root %s 2>&1", LMKDTEST_RESPAWN_FLAG,
-            test_path.c_str());
-        std::string test_output = readCommand(command);
-        GTEST_LOG_(INFO) << test_output;
-    } else {
-        // main test process is root, run the test
-        runMemStressTest();
-    }
-
-    // Analyze results
-    // capture logcat containind kernel logs
-    std::string logcat_out = readLogcat(marker);
-
-    // 1. extract LMKD kills from logcat output, count kills
-    std::stringstream kill_logs;
-    int hit_count = 0;
-    size_t pos = 0;
-    marker = StringPrintf(LMKD_KILL_MARKER_TEMPLATE, test_path.c_str());
-
-    while (true) {
-        if ((pos = logcat_out.find(marker, pos)) != std::string::npos) {
-            kill_logs << getTextAround(logcat_out, pos, 0, 1);
-            pos += marker.length();
-            hit_count++;
-        } else {
-            break;
-        }
-    }
-    GTEST_LOG_(INFO) << "====Logged kills====" << std::endl
-                     << kill_logs.str();
-    EXPECT_TRUE(hit_count == STEP_COUNT) << "Number of kills " << hit_count
-                                         << " is less than expected "
-                                         << STEP_COUNT;
-
-    // 2. check kernel logs for OOM kills
-    pos = logcat_out.find(OOM_MARKER);
-    bool oom_detected = (pos != std::string::npos);
-    bool oom_kill_detected = (oom_detected &&
-        logcat_out.find(OOM_KILL_MARKER, pos) != std::string::npos);
-
-    EXPECT_FALSE(oom_kill_detected) << "OOM kill is detected!";
-    if (oom_detected || oom_kill_detected) {
-        // capture logcat with logs around all OOMs
-        pos = 0;
-        while ((pos = logcat_out.find(OOM_MARKER, pos)) != std::string::npos) {
-            GTEST_LOG_(INFO) << "====Logs around OOM====" << std::endl
-                             << getTextAround(logcat_out, pos,
-                                    MIN_LOG_SIZE / 2, MIN_LOG_SIZE / 2);
-            pos += strlen(OOM_MARKER);
-        }
-    }
-
-    // output complete logcat with kernel (might get truncated)
-    GTEST_LOG_(INFO) << "====Complete logcat output====" << std::endl
-                     << logcat_out;
-}
-
diff --git a/logcat/Android.bp b/logcat/Android.bp
index 5030b15..61fba59 100644
--- a/logcat/Android.bp
+++ b/logcat/Android.bp
@@ -21,10 +21,10 @@
         "-Wall",
         "-Wextra",
         "-Werror",
+        "-DANDROID_BASE_UNIQUE_FD_DISABLE_IMPLICIT_CONVERSION=1",
     ],
     shared_libs: [
         "libbase",
-        "libpcrecpp",
         "libprocessgroup",
     ],
     static_libs: ["liblog"],
@@ -36,31 +36,22 @@
 
     defaults: ["logcat_defaults"],
     srcs: [
-        "logcat_main.cpp",
         "logcat.cpp",
     ],
 }
 
-cc_binary {
+sh_binary {
     name: "logcatd",
-
-    defaults: ["logcat_defaults"],
-    srcs: [
-        "logcatd_main.cpp",
-        "logcat.cpp",
-    ],
+    src: "logcatd",
 }
 
-cc_prebuilt_binary {
+sh_binary {
     name: "logpersist.start",
-    srcs: ["logpersist"],
+    src: "logpersist",
     init_rc: ["logcatd.rc"],
     required: ["logcatd"],
     symlinks: [
         "logpersist.stop",
         "logpersist.cat",
     ],
-    strip: {
-        none: true,
-    },
 }
diff --git a/logcat/event.logtags b/logcat/event.logtags
index 3a1d36f..56a670a 100644
--- a/logcat/event.logtags
+++ b/logcat/event.logtags
@@ -145,6 +145,8 @@
 # libcore failure logging
 90100 exp_det_cert_pin_failure (certs|4)
 
+# 150000 - 160000 reserved for Android Automotive builds
+
 1397638484 snet_event_log (subtag|3) (uid|1) (message|3)
 
 # for events that go to stats log buffer
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index 15e07fe..b8c143d 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -14,255 +14,149 @@
  * limitations under the License.
  */
 
-#include "logcat.h"
-
-#include <android-base/macros.h>
-#include <arpa/inet.h>
-#include <assert.h>
 #include <ctype.h>
 #include <dirent.h>
 #include <errno.h>
+#include <error.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <math.h>
-#include <pthread.h>
 #include <sched.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/cdefs.h>
+#include <sys/ioctl.h>
 #include <sys/resource.h>
-#include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 
-#include <atomic>
 #include <memory>
+#include <regex>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/macros.h>
+#include <android-base/parseint.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
-#include <cutils/sockets.h>
+#include <android-base/unique_fd.h>
+#include <android/log.h>
 #include <log/event_tag_map.h>
+#include <log/log_id.h>
 #include <log/logprint.h>
 #include <private/android_logger.h>
 #include <processgroup/sched_policy.h>
 #include <system/thread_defs.h>
 
-#include <pcrecpp.h>
-
 #define DEFAULT_MAX_ROTATED_LOGS 4
 
-struct log_device_t {
-    const char* device;
-    bool binary;
-    struct logger* logger;
-    struct logger_list* logger_list;
-    bool printed;
+using android::base::Join;
+using android::base::ParseByteCount;
+using android::base::ParseUint;
+using android::base::Split;
+using android::base::StringPrintf;
 
-    log_device_t* next;
+class Logcat {
+  public:
+    int Run(int argc, char** argv);
 
-    log_device_t(const char* d, bool b) {
-        device = d;
-        binary = b;
-        next = nullptr;
-        printed = false;
-        logger = nullptr;
-        logger_list = nullptr;
-    }
+  private:
+    void RotateLogs();
+    void ProcessBuffer(struct log_msg* buf);
+    void PrintDividers(log_id_t log_id, bool print_dividers);
+    void SetupOutputAndSchedulingPolicy(bool blocking);
+    int SetLogFormat(const char* format_string);
+
+    // Used for all options
+    android::base::unique_fd output_fd_{dup(STDOUT_FILENO)};
+    std::unique_ptr<AndroidLogFormat, decltype(&android_log_format_free)> logformat_{
+            android_log_format_new(), &android_log_format_free};
+
+    // For logging to a file and log rotation
+    const char* output_file_name_ = nullptr;
+    size_t log_rotate_size_kb_ = 0;                       // 0 means "no log rotation"
+    size_t max_rotated_logs_ = DEFAULT_MAX_ROTATED_LOGS;  // 0 means "unbounded"
+    size_t out_byte_count_ = 0;
+
+    // For binary log buffers
+    int print_binary_ = 0;
+    std::unique_ptr<EventTagMap, decltype(&android_closeEventTagMap)> event_tag_map_{
+            nullptr, &android_closeEventTagMap};
+    bool has_opened_event_tag_map_ = false;
+
+    // For the related --regex, --max-count, --print
+    std::unique_ptr<std::regex> regex_;
+    size_t max_count_ = 0;  // 0 means "infinite"
+    size_t print_count_ = 0;
+    bool print_it_anyways_ = false;
+
+    // For PrintDividers()
+    log_id_t last_printed_id_ = LOG_ID_MAX;
+    bool printed_start_[LOG_ID_MAX] = {};
+
+    bool debug_ = false;
 };
 
-struct android_logcat_context_internal {
-    // status
-    volatile std::atomic_int retval;  // valid if thread_stopped set
-    // Arguments passed in, or copies and storage thereof if a thread.
-    int argc;
-    char* const* argv;
-    char* const* envp;
-    std::vector<std::string> args;
-    std::vector<const char*> argv_hold;
-    std::vector<std::string> envs;
-    std::vector<const char*> envp_hold;
-    int output_fd;  // duplication of fileno(output) (below)
-    int error_fd;   // duplication of fileno(error) (below)
+#ifndef F2FS_IOC_SET_PIN_FILE
+#define F2FS_IOCTL_MAGIC       0xf5
+#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
+#endif
 
-    // library
-    int fds[2];    // From popen call
-    FILE* output;  // everything writes to fileno(output), buffer unused
-    FILE* error;   // unless error == output.
-    pthread_t thr;
-    volatile std::atomic_bool stop;  // quick exit flag
-    volatile std::atomic_bool thread_stopped;
-    bool stderr_null;    // shell "2>/dev/null"
-    bool stderr_stdout;  // shell "2>&1"
+static int openLogFile(const char* pathname, size_t sizeKB) {
+    int fd = open(pathname, O_WRONLY | O_APPEND | O_CREAT | O_CLOEXEC, S_IRUSR | S_IWUSR | S_IRGRP);
+    if (fd < 0) {
+        return fd;
+    }
 
-    // global variables
-    AndroidLogFormat* logformat;
-    const char* outputFileName;
-    // 0 means "no log rotation"
-    size_t logRotateSizeKBytes;
-    // 0 means "unbounded"
-    size_t maxRotatedLogs;
-    size_t outByteCount;
-    int printBinary;
-    int devCount;  // >1 means multiple
-    pcrecpp::RE* regex;
-    log_device_t* devices;
-    EventTagMap* eventTagMap;
-    // 0 means "infinite"
-    size_t maxCount;
-    size_t printCount;
-
-    bool printItAnyways;
-    bool debug;
-    bool hasOpenedEventTagMap;
-};
-
-// Creates a context associated with this logcat instance
-android_logcat_context create_android_logcat() {
-    android_logcat_context_internal* context;
-
-    context = (android_logcat_context_internal*)calloc(
-        1, sizeof(android_logcat_context_internal));
-    if (!context) return nullptr;
-
-    context->fds[0] = -1;
-    context->fds[1] = -1;
-    context->output_fd = -1;
-    context->error_fd = -1;
-    context->maxRotatedLogs = DEFAULT_MAX_ROTATED_LOGS;
-
-    context->argv_hold.clear();
-    context->args.clear();
-    context->envp_hold.clear();
-    context->envs.clear();
-
-    return (android_logcat_context)context;
+    // no need to check errors
+    __u32 set = 1;
+    ioctl(fd, F2FS_IOC_SET_PIN_FILE, &set);
+    fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, (sizeKB << 10));
+    return fd;
 }
 
-// logd prefixes records with a length field
-#define RECORD_LENGTH_FIELD_SIZE_BYTES sizeof(uint32_t)
+static void closeLogFile(const char* pathname) {
+    int fd = open(pathname, O_WRONLY | O_CLOEXEC);
+    if (fd == -1) {
+        return;
+    }
 
-namespace android {
-
-enum helpType { HELP_FALSE, HELP_TRUE, HELP_FORMAT };
-
-// if showHelp is set, newline required in fmt statement to transition to usage
-static void logcat_panic(android_logcat_context_internal* context,
-                         enum helpType showHelp, const char* fmt, ...)
-    __printflike(3, 4);
-
-static int openLogFile(const char* pathname) {
-    return open(pathname, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR);
+    // no need to check errors
+    __u32 set = 0;
+    ioctl(fd, F2FS_IOC_SET_PIN_FILE, &set);
+    close(fd);
 }
 
-static void close_output(android_logcat_context_internal* context) {
-    // split output_from_error
-    if (context->error == context->output) {
-        context->output = nullptr;
-        context->output_fd = -1;
-    }
-    if (context->error && (context->output_fd == fileno(context->error))) {
-        context->output_fd = -1;
-    }
-    if (context->output_fd == context->error_fd) {
-        context->output_fd = -1;
-    }
-    // close output channel
-    if (context->output) {
-        if (context->output != stdout) {
-            if (context->output_fd == fileno(context->output)) {
-                context->output_fd = -1;
-            }
-            if (context->fds[1] == fileno(context->output)) {
-                context->fds[1] = -1;
-            }
-            fclose(context->output);
-        }
-        context->output = nullptr;
-    }
-    if (context->output_fd >= 0) {
-        if (context->output_fd != fileno(stdout)) {
-            if (context->fds[1] == context->output_fd) {
-                context->fds[1] = -1;
-            }
-            close(context->output_fd);
-        }
-        context->output_fd = -1;
-    }
-}
-
-static void close_error(android_logcat_context_internal* context) {
-    // split error_from_output
-    if (context->output == context->error) {
-        context->error = nullptr;
-        context->error_fd = -1;
-    }
-    if (context->output && (context->error_fd == fileno(context->output))) {
-        context->error_fd = -1;
-    }
-    if (context->error_fd == context->output_fd) {
-        context->error_fd = -1;
-    }
-    // close error channel
-    if (context->error) {
-        if ((context->error != stderr) && (context->error != stdout)) {
-            if (context->error_fd == fileno(context->error)) {
-                context->error_fd = -1;
-            }
-            if (context->fds[1] == fileno(context->error)) {
-                context->fds[1] = -1;
-            }
-            fclose(context->error);
-        }
-        context->error = nullptr;
-    }
-    if (context->error_fd >= 0) {
-        if ((context->error_fd != fileno(stdout)) &&
-            (context->error_fd != fileno(stderr))) {
-            if (context->fds[1] == context->error_fd) context->fds[1] = -1;
-            close(context->error_fd);
-        }
-        context->error_fd = -1;
-    }
-}
-
-static void rotateLogs(android_logcat_context_internal* context) {
-    int err;
-
+void Logcat::RotateLogs() {
     // Can't rotate logs if we're not outputting to a file
-    if (!context->outputFileName) return;
+    if (!output_file_name_) return;
 
-    close_output(context);
+    output_fd_.reset();
 
     // Compute the maximum number of digits needed to count up to
     // maxRotatedLogs in decimal.  eg:
     // maxRotatedLogs == 30
     //   -> log10(30) == 1.477
     //   -> maxRotationCountDigits == 2
-    int maxRotationCountDigits =
-        (context->maxRotatedLogs > 0)
-            ? (int)(floor(log10(context->maxRotatedLogs) + 1))
-            : 0;
+    int max_rotation_count_digits =
+            max_rotated_logs_ > 0 ? (int)(floor(log10(max_rotated_logs_) + 1)) : 0;
 
-    for (int i = context->maxRotatedLogs; i > 0; i--) {
-        std::string file1 = android::base::StringPrintf(
-            "%s.%.*d", context->outputFileName, maxRotationCountDigits, i);
+    for (int i = max_rotated_logs_; i > 0; i--) {
+        std::string file1 =
+                StringPrintf("%s.%.*d", output_file_name_, max_rotation_count_digits, i);
 
         std::string file0;
         if (!(i - 1)) {
-            file0 = android::base::StringPrintf("%s", context->outputFileName);
+            file0 = output_file_name_;
         } else {
-            file0 =
-                android::base::StringPrintf("%s.%.*d", context->outputFileName,
-                                            maxRotationCountDigits, i - 1);
+            file0 = StringPrintf("%s.%.*d", output_file_name_, max_rotation_count_digits, i - 1);
         }
 
         if (!file0.length() || !file1.length()) {
@@ -270,238 +164,202 @@
             break;
         }
 
-        err = rename(file0.c_str(), file1.c_str());
+        closeLogFile(file0.c_str());
+
+        int err = rename(file0.c_str(), file1.c_str());
 
         if (err < 0 && errno != ENOENT) {
             perror("while rotating log files");
         }
     }
 
-    context->output_fd = openLogFile(context->outputFileName);
+    output_fd_.reset(openLogFile(output_file_name_, log_rotate_size_kb_));
 
-    if (context->output_fd < 0) {
-        logcat_panic(context, HELP_FALSE, "couldn't open output file");
-        return;
-    }
-    context->output = fdopen(context->output_fd, "web");
-    if (!context->output) {
-        logcat_panic(context, HELP_FALSE, "couldn't fdopen output file");
-        return;
-    }
-    if (context->stderr_stdout) {
-        close_error(context);
-        context->error = context->output;
-        context->error_fd = context->output_fd;
+    if (!output_fd_.ok()) {
+        error(EXIT_FAILURE, errno, "Couldn't open output file");
     }
 
-    context->outByteCount = 0;
+    out_byte_count_ = 0;
 }
 
-void printBinary(android_logcat_context_internal* context, struct log_msg* buf) {
-    size_t size = buf->len();
-
-    TEMP_FAILURE_RETRY(write(context->output_fd, buf, size));
-}
-
-static bool regexOk(android_logcat_context_internal* context,
-                    const AndroidLogEntry& entry) {
-    if (!context->regex) return true;
-
-    std::string messageString(entry.message, entry.messageLen);
-
-    return context->regex->PartialMatch(messageString);
-}
-
-static void processBuffer(android_logcat_context_internal* context,
-                          log_device_t* dev, struct log_msg* buf) {
+void Logcat::ProcessBuffer(struct log_msg* buf) {
     int bytesWritten = 0;
     int err;
     AndroidLogEntry entry;
     char binaryMsgBuf[1024];
 
-    if (dev->binary) {
-        if (!context->eventTagMap && !context->hasOpenedEventTagMap) {
-            context->eventTagMap = android_openEventTagMap(nullptr);
-            context->hasOpenedEventTagMap = true;
+    bool is_binary =
+            buf->id() == LOG_ID_EVENTS || buf->id() == LOG_ID_STATS || buf->id() == LOG_ID_SECURITY;
+
+    if (is_binary) {
+        if (!event_tag_map_ && !has_opened_event_tag_map_) {
+            event_tag_map_.reset(android_openEventTagMap(nullptr));
+            has_opened_event_tag_map_ = true;
         }
-        err = android_log_processBinaryLogBuffer(
-            &buf->entry_v1, &entry, context->eventTagMap, binaryMsgBuf,
-            sizeof(binaryMsgBuf));
+        err = android_log_processBinaryLogBuffer(&buf->entry, &entry, event_tag_map_.get(),
+                                                 binaryMsgBuf, sizeof(binaryMsgBuf));
         // printf(">>> pri=%d len=%d msg='%s'\n",
         //    entry.priority, entry.messageLen, entry.message);
     } else {
-        err = android_log_processLogBuffer(&buf->entry_v1, &entry);
+        err = android_log_processLogBuffer(&buf->entry, &entry);
     }
-    if ((err < 0) && !context->debug) return;
+    if (err < 0 && !debug_) return;
 
-    if (android_log_shouldPrintLine(
-            context->logformat, std::string(entry.tag, entry.tagLen).c_str(),
-            entry.priority)) {
-        bool match = regexOk(context, entry);
+    if (android_log_shouldPrintLine(logformat_.get(), std::string(entry.tag, entry.tagLen).c_str(),
+                                    entry.priority)) {
+        bool match = !regex_ ||
+                     std::regex_search(entry.message, entry.message + entry.messageLen, *regex_);
 
-        context->printCount += match;
-        if (match || context->printItAnyways) {
-            bytesWritten = android_log_printLogLine(context->logformat,
-                                                    context->output_fd, &entry);
+        print_count_ += match;
+        if (match || print_it_anyways_) {
+            bytesWritten = android_log_printLogLine(logformat_.get(), output_fd_.get(), &entry);
 
             if (bytesWritten < 0) {
-                logcat_panic(context, HELP_FALSE, "output error");
-                return;
+                error(EXIT_FAILURE, 0, "Output error.");
             }
         }
     }
 
-    context->outByteCount += bytesWritten;
+    out_byte_count_ += bytesWritten;
 
-    if (context->logRotateSizeKBytes > 0 &&
-        (context->outByteCount / 1024) >= context->logRotateSizeKBytes) {
-        rotateLogs(context);
+    if (log_rotate_size_kb_ > 0 && (out_byte_count_ / 1024) >= log_rotate_size_kb_) {
+        RotateLogs();
     }
 }
 
-static void maybePrintStart(android_logcat_context_internal* context,
-                            log_device_t* dev, bool printDividers) {
-    if (!dev->printed || printDividers) {
-        if (context->devCount > 1 && !context->printBinary) {
-            char buf[1024];
-            snprintf(buf, sizeof(buf), "--------- %s %s\n",
-                     dev->printed ? "switch to" : "beginning of", dev->device);
-            if (write(context->output_fd, buf, strlen(buf)) < 0) {
-                logcat_panic(context, HELP_FALSE, "output error");
-                return;
-            }
+void Logcat::PrintDividers(log_id_t log_id, bool print_dividers) {
+    if (log_id == last_printed_id_ || print_binary_) {
+        return;
+    }
+    if (!printed_start_[log_id] || print_dividers) {
+        if (dprintf(output_fd_.get(), "--------- %s %s\n",
+                    printed_start_[log_id] ? "switch to" : "beginning of",
+                    android_log_id_to_name(log_id)) < 0) {
+            error(EXIT_FAILURE, errno, "Output error");
         }
-        dev->printed = true;
     }
+    last_printed_id_ = log_id;
+    printed_start_[log_id] = true;
 }
 
-static void setupOutputAndSchedulingPolicy(
-    android_logcat_context_internal* context, bool blocking) {
-    if (!context->outputFileName) return;
+void Logcat::SetupOutputAndSchedulingPolicy(bool blocking) {
+    if (!output_file_name_) return;
 
     if (blocking) {
         // Lower priority and set to batch scheduling if we are saving
         // the logs into files and taking continuous content.
-        if ((set_sched_policy(0, SP_BACKGROUND) < 0) && context->error) {
-            fprintf(context->error,
-                    "failed to set background scheduling policy\n");
+        if (set_sched_policy(0, SP_BACKGROUND) < 0) {
+            fprintf(stderr, "failed to set background scheduling policy\n");
         }
 
-        struct sched_param param;
-        memset(&param, 0, sizeof(param));
+        struct sched_param param = {};
         if (sched_setscheduler((pid_t)0, SCHED_BATCH, &param) < 0) {
             fprintf(stderr, "failed to set to batch scheduler\n");
         }
 
-        if ((setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND) < 0) &&
-            context->error) {
-            fprintf(context->error, "failed set to priority\n");
+        if (setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND) < 0) {
+            fprintf(stderr, "failed set to priority\n");
         }
     }
 
-    close_output(context);
+    output_fd_.reset(openLogFile(output_file_name_, log_rotate_size_kb_));
 
-    context->output_fd = openLogFile(context->outputFileName);
-
-    if (context->output_fd < 0) {
-        logcat_panic(context, HELP_FALSE, "couldn't open output file");
-        return;
+    if (!output_fd_.ok()) {
+        error(EXIT_FAILURE, errno, "Couldn't open output file");
     }
 
     struct stat statbuf;
-    if (fstat(context->output_fd, &statbuf) == -1) {
-        close_output(context);
-        logcat_panic(context, HELP_FALSE, "couldn't get output file stat\n");
-        return;
+    if (fstat(output_fd_.get(), &statbuf) == -1) {
+        error(EXIT_FAILURE, errno, "Couldn't get output file stat");
     }
 
     if ((size_t)statbuf.st_size > SIZE_MAX || statbuf.st_size < 0) {
-        close_output(context);
-        logcat_panic(context, HELP_FALSE, "invalid output file stat\n");
-        return;
+        error(EXIT_FAILURE, 0, "Invalid output file stat.");
     }
 
-    context->output = fdopen(context->output_fd, "web");
-
-    context->outByteCount = statbuf.st_size;
+    out_byte_count_ = statbuf.st_size;
 }
 
 // clang-format off
-static void show_help(android_logcat_context_internal* context) {
-    if (!context->error) return;
+static void show_help() {
+    const char* cmd = getprogname();
 
-    const char* cmd = strrchr(context->argv[0], '/');
-    cmd = cmd ? cmd + 1 : context->argv[0];
+    fprintf(stderr, "Usage: %s [options] [filterspecs]\n", cmd);
 
-    fprintf(context->error, "Usage: %s [options] [filterspecs]\n", cmd);
+    fprintf(stderr, R"init(
+General options:
+  -b, --buffer=<buffer>       Request alternate ring buffer(s):
+                                main system radio events crash default all
+                              Additionally, 'kernel' for userdebug and eng builds, and
+                              'security' for Device Owner installations.
+                              Multiple -b parameters or comma separated list of buffers are
+                              allowed. Buffers are interleaved.
+                              Default -b main,system,crash,kernel.
+  -L, --last                  Dump logs from prior to last reboot from pstore.
+  -c, --clear                 Clear (flush) the entire log and exit.
+                              if -f is specified, clear the specified file and its related rotated
+                              log files instead.
+                              if -L is specified, clear pstore log instead.
+  -d                          Dump the log and then exit (don't block).
+  --pid=<pid>                 Only print logs from the given pid.
+  --wrap                      Sleep for 2 hours or when buffer about to wrap whichever
+                              comes first. Improves efficiency of polling by providing
+                              an about-to-wrap wakeup.
 
-    fprintf(context->error, "options include:\n"
-                    "  -s              Set default filter to silent. Equivalent to filterspec '*:S'\n"
-                    "  -f <file>, --file=<file>               Log to file. Default is stdout\n"
-                    "  -r <kbytes>, --rotate-kbytes=<kbytes>\n"
-                    "                  Rotate log every kbytes. Requires -f option\n"
-                    "  -n <count>, --rotate-count=<count>\n"
-                    "                  Sets max number of rotated logs to <count>, default 4\n"
-                    "  --id=<id>       If the signature id for logging to file changes, then clear\n"
-                    "                  the fileset and continue\n"
-                    "  -v <format>, --format=<format>\n"
-                    "                  Sets log print format verb and adverbs, where <format> is:\n"
-                    "                    brief help long process raw tag thread threadtime time\n"
-                    "                  and individually flagged modifying adverbs can be added:\n"
-                    "                    color descriptive epoch monotonic printable uid\n"
-                    "                    usec UTC year zone\n"
-                    "                  Multiple -v parameters or comma separated list of format and\n"
-                    "                  format modifiers are allowed.\n"
-                    // private and undocumented nsec, no signal, too much noise
-                    // useful for -T or -t <timestamp> accurate testing though.
-                    "  -D, --dividers  Print dividers between each log buffer\n"
-                    "  -c, --clear     Clear (flush) the entire log and exit\n"
-                    "                  if Log to File specified, clear fileset instead\n"
-                    "  -d              Dump the log and then exit (don't block)\n"
-                    "  -e <expr>, --regex=<expr>\n"
-                    "                  Only print lines where the log message matches <expr>\n"
-                    "                  where <expr> is a Perl-compatible regular expression\n"
-                    // Leave --head undocumented as alias for -m
-                    "  -m <count>, --max-count=<count>\n"
-                    "                  Quit after printing <count> lines. This is meant to be\n"
-                    "                  paired with --regex, but will work on its own.\n"
-                    "  --print         Paired with --regex and --max-count to let content bypass\n"
-                    "                  regex filter but still stop at number of matches.\n"
-                    // Leave --tail undocumented as alias for -t
-                    "  -t <count>      Print only the most recent <count> lines (implies -d)\n"
-                    "  -t '<time>'     Print most recent lines since specified time (implies -d)\n"
-                    "  -T <count>      Print only the most recent <count> lines (does not imply -d)\n"
-                    "  -T '<time>'     Print most recent lines since specified time (not imply -d)\n"
-                    "                  count is pure numerical, time is 'MM-DD hh:mm:ss.mmm...'\n"
-                    "                  'YYYY-MM-DD hh:mm:ss.mmm...' or 'sssss.mmm...' format\n"
-                    "  -g, --buffer-size                      Get the size of the ring buffer.\n"
-                    "  -G <size>, --buffer-size=<size>\n"
-                    "                  Set size of log ring buffer, may suffix with K or M.\n"
-                    "  -L, --last      Dump logs from prior to last reboot\n"
-                    "  -b <buffer>, --buffer=<buffer>         Request alternate ring buffer, 'main',\n"
-                    "                  'system', 'radio', 'events', 'crash', 'default' or 'all'.\n"
-                    "                  Additionally, 'kernel' for userdebug and eng builds, and\n"
-                    "                  'security' for Device Owner installations.\n"
-                    "                  Multiple -b parameters or comma separated list of buffers are\n"
-                    "                  allowed. Buffers interleaved. Default -b main,system,crash.\n"
-                    "  -B, --binary    Output the log in binary.\n"
-                    "  -S, --statistics                       Output statistics.\n"
-                    "  -p, --prune     Print prune white and ~black list. Service is specified as\n"
-                    "                  UID, UID/PID or /PID. Weighed for quicker pruning if prefix\n"
-                    "                  with ~, otherwise weighed for longevity if unadorned. All\n"
-                    "                  other pruning activity is oldest first. Special case ~!\n"
-                    "                  represents an automatic quicker pruning for the noisiest\n"
-                    "                  UID as determined by the current statistics.\n"
-                    "  -P '<list> ...', --prune='<list> ...'\n"
-                    "                  Set prune white and ~black list, using same format as\n"
-                    "                  listed above. Must be quoted.\n"
-                    "  --pid=<pid>     Only prints logs from the given pid.\n"
-                    // Check ANDROID_LOG_WRAP_DEFAULT_TIMEOUT value for match to 2 hours
-                    "  --wrap          Sleep for 2 hours or when buffer about to wrap whichever\n"
-                    "                  comes first. Improves efficiency of polling by providing\n"
-                    "                  an about-to-wrap wakeup.\n");
+Formatting:
+  -v, --format=<format>       Sets log print format verb and adverbs, where <format> is one of:
+                                brief help long process raw tag thread threadtime time
+                              Modifying adverbs can be added:
+                                color descriptive epoch monotonic printable uid usec UTC year zone
+                              Multiple -v parameters or comma separated list of format and format
+                              modifiers are allowed.
+  -D, --dividers              Print dividers between each log buffer.
+  -B, --binary                Output the log in binary.
 
-    fprintf(context->error, "\nfilterspecs are a series of \n"
+Outfile files:
+  -f, --file=<file>           Log to file instead of stdout.
+  -r, --rotate-kbytes=<n>     Rotate log every <n> kbytes. Requires -f option.
+  -n, --rotate-count=<count>  Sets max number of rotated logs to <count>, default 4.
+  --id=<id>                   If the signature <id> for logging to file changes, then clear the
+                              associated files and continue.
+
+Logd control:
+ These options send a control message to the logd daemon on device, print its return message if
+ applicable, then exit. They are incompatible with -L, as these attributes do not apply to pstore.
+  -g, --buffer-size           Get the size of the ring buffers within logd.
+  -G, --buffer-size=<size>    Set size of a ring buffer in logd. May suffix with K or M.
+                              This can individually control each buffer's size with -b.
+  -S, --statistics            Output statistics.
+                              --pid can be used to provide pid specific stats.
+  -p, --prune                 Print prune white and ~black list. Service is specified as UID,
+                              UID/PID or /PID. Weighed for quicker pruning if prefix with ~,
+                              otherwise weighed for longevity if unadorned. All other pruning
+                              activity is oldest first. Special case ~! represents an automatic
+                              quicker pruning for the noisiest UID as determined by the current
+                              statistics.
+  -P, --prune='<list> ...'    Set prune white and ~black list, using same format as listed above.
+                              Must be quoted.
+
+Filtering:
+  -s                          Set default filter to silent. Equivalent to filterspec '*:S'
+  -e, --regex=<expr>          Only print lines where the log message matches <expr> where <expr> is
+                              an ECMAScript regular expression.
+  -m, --max-count=<count>     Quit after printing <count> lines. This is meant to be paired with
+                              --regex, but will work on its own.
+  --print                     This option is only applicable when --regex is set and only useful if
+                              --max-count is also provided.
+                              With --print, logcat will print all messages even if they do not
+                              match the regex. Logcat will quit after printing the max-count number
+                              of lines that match the regex.
+  -t <count>                  Print only the most recent <count> lines (implies -d).
+  -t '<time>'                 Print the lines since specified time (implies -d).
+  -T <count>                  Print only the most recent <count> lines (does not imply -d).
+  -T '<time>'                 Print the lines since specified time (not imply -d).
+                              count is pure numerical, time is 'MM-DD hh:mm:ss.mmm...'
+                              'YYYY-MM-DD hh:mm:ss.mmm...' or 'sssss.mmm...' format.
+)init");
+
+    fprintf(stderr, "\nfilterspecs are a series of \n"
                    "  <tag>[:priority]\n\n"
                    "where <tag> is a log component tag (or * for all) and priority is:\n"
                    "  V    Verbose (default for <tag>)\n"
@@ -519,9 +377,8 @@
                    "or defaults to \"threadtime\"\n\n");
 }
 
-static void show_format_help(android_logcat_context_internal* context) {
-    if (!context->error) return;
-    fprintf(context->error,
+static void show_format_help() {
+    fprintf(stderr,
         "-v <format>, --format=<format> options:\n"
         "  Sets log print format verb and adverbs, where <format> is:\n"
         "    brief long process raw tag thread threadtime time\n"
@@ -555,16 +412,13 @@
 }
 // clang-format on
 
-static int setLogFormat(android_logcat_context_internal* context,
-                        const char* formatString) {
-    AndroidLogPrintFormat format;
-
-    format = android_log_formatFromString(formatString);
+int Logcat::SetLogFormat(const char* format_string) {
+    AndroidLogPrintFormat format = android_log_formatFromString(format_string);
 
     // invalid string?
     if (format == FORMAT_OFF) return -1;
 
-    return android_log_setPrintFormat(context->logformat, format);
+    return android_log_setPrintFormat(logformat_.get(), format);
 }
 
 static std::pair<unsigned long, const char*> format_of_size(unsigned long value) {
@@ -577,51 +431,6 @@
     return std::make_pair(value, multipliers[i]);
 }
 
-// String to unsigned int, returns -1 if it fails
-static bool getSizeTArg(const char* ptr, size_t* val, size_t min = 0,
-                        size_t max = SIZE_MAX) {
-    if (!ptr) return false;
-
-    char* endp;
-    errno = 0;
-    size_t ret = (size_t)strtoll(ptr, &endp, 0);
-
-    if (endp[0] || errno) return false;
-
-    if ((ret > max) || (ret < min)) return false;
-
-    *val = ret;
-    return true;
-}
-
-static void logcat_panic(android_logcat_context_internal* context,
-                         enum helpType showHelp, const char* fmt, ...) {
-    context->retval = EXIT_FAILURE;
-    if (!context->error) {
-        context->stop = true;
-        return;
-    }
-
-    va_list args;
-    va_start(args, fmt);
-    vfprintf(context->error, fmt, args);
-    va_end(args);
-
-    switch (showHelp) {
-        case HELP_TRUE:
-            show_help(context);
-            break;
-        case HELP_FORMAT:
-            show_format_help(context);
-            break;
-        case HELP_FALSE:
-        default:
-            break;
-    }
-
-    context->stop = true;
-}
-
 static char* parseTime(log_time& t, const char* cp) {
     char* ep = t.strptime(cp, "%m-%d %H:%M:%S.%q");
     if (ep) return ep;
@@ -699,32 +508,18 @@
     return retval;
 }
 
-const char* getenv(android_logcat_context_internal* context, const char* name) {
-    if (!context->envp || !name || !*name) return nullptr;
-
-    for (size_t len = strlen(name), i = 0; context->envp[i]; ++i) {
-        if (strncmp(context->envp[i], name, len)) continue;
-        if (context->envp[i][len] == '=') return &context->envp[i][len + 1];
-    }
-    return nullptr;
-}
-
-}  // namespace android
-
-void reportErrorName(const char** current, const char* name,
-                     bool blockSecurity) {
-    if (*current) return;
-    if (!blockSecurity || (android_name_to_log_id(name) != LOG_ID_SECURITY)) {
-        *current = name;
+void ReportErrorName(const std::string& name, bool allow_security,
+                     std::vector<std::string>* errors) {
+    if (allow_security || name != "security") {
+        errors->emplace_back(name);
     }
 }
 
-static int __logcat(android_logcat_context_internal* context) {
-    using namespace android;
-    int err;
+int Logcat::Run(int argc, char** argv) {
     bool hasSetLogFormat = false;
     bool clearLog = false;
-    bool allSelected = false;
+    bool security_buffer_selected =
+            false;  // Do not report errors on the security buffer unless it is explicitly named.
     bool getLogSize = false;
     bool getPruneList = false;
     bool printStatistics = false;
@@ -734,114 +529,15 @@
     const char* setId = nullptr;
     int mode = ANDROID_LOG_RDONLY;
     std::string forceFilters;
-    log_device_t* dev;
-    struct logger_list* logger_list;
     size_t tail_lines = 0;
     log_time tail_time(log_time::EPOCH);
     size_t pid = 0;
     bool got_t = false;
-
-    // object instantiations before goto's can happen
-    log_device_t unexpected("unexpected", false);
-    const char* openDeviceFail = nullptr;
-    const char* clearFail = nullptr;
-    const char* setSizeFail = nullptr;
-    const char* getSizeFail = nullptr;
-    int argc = context->argc;
-    char* const* argv = context->argv;
-
-    context->output = stdout;
-    context->error = stderr;
-
-    for (int i = 0; i < argc; ++i) {
-        // Simulate shell stderr redirect parsing
-        if ((argv[i][0] != '2') || (argv[i][1] != '>')) continue;
-
-        // Append to file not implemented, just open file
-        size_t skip = (argv[i][2] == '>') + 2;
-        if (!strcmp(&argv[i][skip], "/dev/null")) {
-            context->stderr_null = true;
-        } else if (!strcmp(&argv[i][skip], "&1")) {
-            context->stderr_stdout = true;
-        } else {
-            // stderr file redirections are not supported
-            fprintf(context->stderr_stdout ? stdout : stderr,
-                    "stderr redirection to file %s unsupported, skipping\n",
-                    &argv[i][skip]);
-        }
-        // Only the first one
-        break;
-    }
-
-    const char* filename = nullptr;
-    for (int i = 0; i < argc; ++i) {
-        // Simulate shell stdout redirect parsing
-        if (argv[i][0] != '>') continue;
-
-        // Append to file not implemented, just open file
-        filename = &argv[i][(argv[i][1] == '>') + 1];
-        // Only the first one
-        break;
-    }
-
-    // Deal with setting up file descriptors and FILE pointers
-    if (context->error_fd >= 0) {  // Is an error file descriptor supplied?
-        if (context->error_fd == context->output_fd) {
-            context->stderr_stdout = true;
-        } else if (context->stderr_null) {  // redirection told us to close it
-            close(context->error_fd);
-            context->error_fd = -1;
-        } else {  // All Ok, convert error to a FILE pointer
-            context->error = fdopen(context->error_fd, "web");
-            if (!context->error) {
-                context->retval = -errno;
-                fprintf(context->stderr_stdout ? stdout : stderr,
-                        "Failed to fdopen(error_fd=%d) %s\n", context->error_fd,
-                        strerror(errno));
-                goto exit;
-            }
-        }
-    }
-    if (context->output_fd >= 0) {  // Is an output file descriptor supplied?
-        if (filename) {  // redirect to file, close supplied file descriptor.
-            close(context->output_fd);
-            context->output_fd = -1;
-        } else {  // All Ok, convert output to a FILE pointer
-            context->output = fdopen(context->output_fd, "web");
-            if (!context->output) {
-                context->retval = -errno;
-                fprintf(context->stderr_stdout ? stdout : context->error,
-                        "Failed to fdopen(output_fd=%d) %s\n",
-                        context->output_fd, strerror(errno));
-                goto exit;
-            }
-        }
-    }
-    if (filename) {  // We supplied an output file redirected in command line
-        context->output = fopen(filename, "web");
-    }
-    // Deal with 2>&1
-    if (context->stderr_stdout) context->error = context->output;
-    // Deal with 2>/dev/null
-    if (context->stderr_null) {
-        context->error_fd = -1;
-        context->error = nullptr;
-    }
-    // Only happens if output=stdout or output=filename
-    if ((context->output_fd < 0) && context->output) {
-        context->output_fd = fileno(context->output);
-    }
-    // Only happens if error=stdout || error=stderr
-    if ((context->error_fd < 0) && context->error) {
-        context->error_fd = fileno(context->error);
-    }
-
-    context->logformat = android_log_format_new();
+    unsigned id_mask = 0;
 
     if (argc == 2 && !strcmp(argv[1], "--help")) {
-        show_help(context);
-        context->retval = EXIT_SUCCESS;
-        goto exit;
+        show_help();
+        return EXIT_SUCCESS;
     }
 
     // meant to catch comma-delimited values, but cast a wider
@@ -898,11 +594,13 @@
             case 0:
                 // only long options
                 if (long_options[option_index].name == pid_str) {
-                    // ToDo: determine runtime PID_MAX?
-                    if (!getSizeTArg(optarg, &pid, 1)) {
-                        logcat_panic(context, HELP_TRUE, "%s %s out of range\n",
-                                     long_options[option_index].name, optarg);
-                        goto exit;
+                    if (pid != 0) {
+                        error(EXIT_FAILURE, 0, "Only one --pid argument can be provided.");
+                    }
+
+                    if (!ParseUint(optarg, &pid) || pid < 1) {
+                        error(EXIT_FAILURE, 0, "%s %s out of range.",
+                              long_options[option_index].name, optarg);
                     }
                     break;
                 }
@@ -911,26 +609,23 @@
                             ANDROID_LOG_NONBLOCK;
                     // ToDo: implement API that supports setting a wrap timeout
                     size_t dummy = ANDROID_LOG_WRAP_DEFAULT_TIMEOUT;
-                    if (optarg && !getSizeTArg(optarg, &dummy, 1)) {
-                        logcat_panic(context, HELP_TRUE, "%s %s out of range\n",
-                                     long_options[option_index].name, optarg);
-                        goto exit;
+                    if (optarg && (!ParseUint(optarg, &dummy) || dummy < 1)) {
+                        error(EXIT_FAILURE, 0, "%s %s out of range.",
+                              long_options[option_index].name, optarg);
                     }
-                    if ((dummy != ANDROID_LOG_WRAP_DEFAULT_TIMEOUT) &&
-                        context->error) {
-                        fprintf(context->error,
-                                "WARNING: %s %u seconds, ignoring %zu\n",
-                                long_options[option_index].name,
-                                ANDROID_LOG_WRAP_DEFAULT_TIMEOUT, dummy);
+                    if (dummy != ANDROID_LOG_WRAP_DEFAULT_TIMEOUT) {
+                        fprintf(stderr, "WARNING: %s %u seconds, ignoring %zu\n",
+                                long_options[option_index].name, ANDROID_LOG_WRAP_DEFAULT_TIMEOUT,
+                                dummy);
                     }
                     break;
                 }
                 if (long_options[option_index].name == print_str) {
-                    context->printItAnyways = true;
+                    print_it_anyways_ = true;
                     break;
                 }
                 if (long_options[option_index].name == debug_str) {
-                    context->debug = true;
+                    debug_ = true;
                     break;
                 }
                 if (long_options[option_index].name == id_str) {
@@ -940,7 +635,7 @@
 
             case 's':
                 // default to all silent
-                android_log_addFilterRule(context->logformat, "*:s");
+                android_log_addFilterRule(logformat_.get(), "*:s");
                 break;
 
             case 'c':
@@ -965,25 +660,18 @@
                 if (strspn(optarg, "0123456789") != strlen(optarg)) {
                     char* cp = parseTime(tail_time, optarg);
                     if (!cp) {
-                        logcat_panic(context, HELP_FALSE, "-%c \"%s\" not in time format\n", c,
-                                     optarg);
-                        goto exit;
+                        error(EXIT_FAILURE, 0, "-%c '%s' not in time format.", c, optarg);
                     }
                     if (*cp) {
                         char ch = *cp;
                         *cp = '\0';
-                        if (context->error) {
-                            fprintf(context->error, "WARNING: -%c \"%s\"\"%c%s\" time truncated\n",
-                                    c, optarg, ch, cp + 1);
-                        }
+                        fprintf(stderr, "WARNING: -%c '%s' '%c%s' time truncated\n", c, optarg, ch,
+                                cp + 1);
                         *cp = ch;
                     }
                 } else {
-                    if (!getSizeTArg(optarg, &tail_lines, 1)) {
-                        if (context->error) {
-                            fprintf(context->error, "WARNING: -%c %s invalid, setting to 1\n", c,
-                                    optarg);
-                        }
+                    if (!ParseUint(optarg, &tail_lines) || tail_lines < 1) {
+                        fprintf(stderr, "WARNING: -%c %s invalid, setting to 1\n", c, optarg);
                         tail_lines = 1;
                     }
                 }
@@ -994,14 +682,13 @@
                 break;
 
             case 'e':
-                context->regex = new pcrecpp::RE(optarg);
+                regex_.reset(new std::regex(optarg));
                 break;
 
             case 'm': {
-                if (!getSizeTArg(optarg, &context->maxCount)) {
-                    logcat_panic(context, HELP_FALSE,
-                                 "-%c \"%s\" isn't an integer greater than zero\n", c, optarg);
-                    goto exit;
+                if (!ParseUint(optarg, &max_count_) || max_count_ < 1) {
+                    error(EXIT_FAILURE, 0, "-%c '%s' isn't an integer greater than zero.", c,
+                          optarg);
                 }
             } break;
 
@@ -1013,37 +700,8 @@
                 FALLTHROUGH_INTENDED;
 
             case 'G': {
-                char* cp;
-                if (strtoll(optarg, &cp, 0) > 0) {
-                    setLogSize = strtoll(optarg, &cp, 0);
-                } else {
-                    setLogSize = 0;
-                }
-
-                switch (*cp) {
-                    case 'g':
-                    case 'G':
-                        setLogSize *= 1024;
-                        FALLTHROUGH_INTENDED;
-                    case 'm':
-                    case 'M':
-                        setLogSize *= 1024;
-                        FALLTHROUGH_INTENDED;
-                    case 'k':
-                    case 'K':
-                        setLogSize *= 1024;
-                        FALLTHROUGH_INTENDED;
-                    case '\0':
-                        break;
-
-                    default:
-                        setLogSize = 0;
-                }
-
-                if (!setLogSize) {
-                    logcat_panic(context, HELP_FALSE,
-                                 "ERROR: -G <num><multiplier>\n");
-                    goto exit;
+                if (!ParseByteCount(optarg, &setLogSize) || setLogSize < 1) {
+                    error(EXIT_FAILURE, 0, "-G must be specified as <num><multiplier>.");
                 }
             } break;
 
@@ -1058,67 +716,28 @@
                 setPruneList = optarg;
                 break;
 
-            case 'b': {
-                std::unique_ptr<char, void (*)(void*)> buffers(strdup(optarg), free);
-                char* arg = buffers.get();
-                unsigned idMask = 0;
-                char* sv = nullptr;  // protect against -ENOMEM above
-                while (!!(arg = strtok_r(arg, delimiters, &sv))) {
-                    if (!strcmp(arg, "default")) {
-                        idMask |= (1 << LOG_ID_MAIN) | (1 << LOG_ID_SYSTEM) |
-                                  (1 << LOG_ID_CRASH);
-                    } else if (!strcmp(arg, "all")) {
-                        allSelected = true;
-                        idMask = (unsigned)-1;
+            case 'b':
+                for (const auto& buffer : Split(optarg, delimiters)) {
+                    if (buffer == "default") {
+                        id_mask |= (1 << LOG_ID_MAIN) | (1 << LOG_ID_SYSTEM) | (1 << LOG_ID_CRASH);
+                    } else if (buffer == "all") {
+                        id_mask = -1;
                     } else {
-                        log_id_t log_id = android_name_to_log_id(arg);
-                        const char* name = android_log_id_to_name(log_id);
-
-                        if (!!strcmp(name, arg)) {
-                            logcat_panic(context, HELP_TRUE,
-                                         "unknown buffer %s\n", arg);
-                            goto exit;
+                        log_id_t log_id = android_name_to_log_id(buffer.c_str());
+                        if (log_id >= LOG_ID_MAX) {
+                            error(EXIT_FAILURE, 0, "Unknown buffer '%s' listed for -b.",
+                                  buffer.c_str());
                         }
-                        if (log_id == LOG_ID_SECURITY) allSelected = false;
-                        idMask |= (1 << log_id);
-                    }
-                    arg = nullptr;
-                }
-
-                for (int i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
-                    const char* name = android_log_id_to_name((log_id_t)i);
-                    log_id_t log_id = android_name_to_log_id(name);
-
-                    if (log_id != (log_id_t)i) continue;
-                    if (!(idMask & (1 << i))) continue;
-
-                    bool found = false;
-                    for (dev = context->devices; dev; dev = dev->next) {
-                        if (!strcmp(name, dev->device)) {
-                            found = true;
-                            break;
+                        if (log_id == LOG_ID_SECURITY) {
+                            security_buffer_selected = true;
                         }
-                        if (!dev->next) break;
+                        id_mask |= (1 << log_id);
                     }
-                    if (found) continue;
-
-                    bool binary = !strcmp(name, "events") ||
-                                  !strcmp(name, "security") ||
-                                  !strcmp(name, "stats");
-                    log_device_t* d = new log_device_t(name, binary);
-
-                    if (dev) {
-                        dev->next = d;
-                        dev = d;
-                    } else {
-                        context->devices = dev = d;
-                    }
-                    context->devCount++;
                 }
-            } break;
+                break;
 
             case 'B':
-                context->printBinary = 1;
+                print_binary_ = 1;
                 break;
 
             case 'f':
@@ -1126,43 +745,34 @@
                     tail_time = lastLogTime(optarg);
                 }
                 // redirect output to a file
-                context->outputFileName = optarg;
+                output_file_name_ = optarg;
                 break;
 
             case 'r':
-                if (!getSizeTArg(optarg, &context->logRotateSizeKBytes, 1)) {
-                    logcat_panic(context, HELP_TRUE, "Invalid parameter \"%s\" to -r\n", optarg);
-                    goto exit;
+                if (!ParseUint(optarg, &log_rotate_size_kb_) || log_rotate_size_kb_ < 1) {
+                    error(EXIT_FAILURE, 0, "Invalid parameter '%s' to -r.", optarg);
                 }
                 break;
 
             case 'n':
-                if (!getSizeTArg(optarg, &context->maxRotatedLogs, 1)) {
-                    logcat_panic(context, HELP_TRUE, "Invalid parameter \"%s\" to -n\n", optarg);
-                    goto exit;
+                if (!ParseUint(optarg, &max_rotated_logs_) || max_rotated_logs_ < 1) {
+                    error(EXIT_FAILURE, 0, "Invalid parameter '%s' to -n.", optarg);
                 }
                 break;
 
-            case 'v': {
+            case 'v':
                 if (!strcmp(optarg, "help") || !strcmp(optarg, "--help")) {
-                    show_format_help(context);
-                    context->retval = EXIT_SUCCESS;
-                    goto exit;
+                    show_format_help();
+                    return EXIT_SUCCESS;
                 }
-                std::unique_ptr<char, void (*)(void*)> formats(strdup(optarg), free);
-                char* arg = formats.get();
-                char* sv = nullptr;  // protect against -ENOMEM above
-                while (!!(arg = strtok_r(arg, delimiters, &sv))) {
-                    err = setLogFormat(context, arg);
+                for (const auto& arg : Split(optarg, delimiters)) {
+                    int err = SetLogFormat(arg.c_str());
                     if (err < 0) {
-                        logcat_panic(context, HELP_FORMAT,
-                                     "Invalid parameter \"%s\" to -v\n", arg);
-                        goto exit;
+                        error(EXIT_FAILURE, 0, "Invalid parameter '%s' to -v.", arg.c_str());
                     }
-                    arg = nullptr;
                     if (err) hasSetLogFormat = true;
                 }
-            } break;
+                break;
 
             case 'Q':
 #define LOGCAT_FILTER "androidboot.logcat="
@@ -1180,8 +790,7 @@
                 {
                     // if not in emulator, exit quietly
                     if (false == android::base::GetBoolProperty(QEMU_PROPERTY, false)) {
-                        context->retval = EXIT_SUCCESS;
-                        goto exit;
+                        return EXIT_SUCCESS;
                     }
 
                     std::string cmdline = android::base::GetProperty(QEMU_CMDLINE, "");
@@ -1192,8 +801,7 @@
                     const char* logcatFilter = strstr(cmdline.c_str(), LOGCAT_FILTER);
                     // if nothing found or invalid filters, exit quietly
                     if (!logcatFilter) {
-                        context->retval = EXIT_SUCCESS;
-                        goto exit;
+                        return EXIT_SUCCESS;
                     }
 
                     const char* p = logcatFilter + strlen(LOGCAT_FILTER);
@@ -1212,8 +820,7 @@
                     } else if (console) {
                         p = console + strlen(CONSOLE_OPTION);
                     } else {
-                        context->retval = EXIT_FAILURE;
-                        goto exit;
+                        return EXIT_FAILURE;
                     }
 
                     q = strpbrk(p, " \t\n\r");
@@ -1230,37 +837,26 @@
                             devname = devname.substr(0, pos);
                         }
                     }
-                    cmdline.erase();
 
-                    if (context->error) {
-                        fprintf(context->error, "logcat using %s\n",
-                                devname.c_str());
+                    fprintf(stderr, "logcat using %s\n", devname.c_str());
+
+                    int fd = open(devname.c_str(), O_WRONLY | O_CLOEXEC);
+                    if (fd < 0) {
+                        break;
                     }
 
-                    FILE* fp = fopen(devname.c_str(), "web");
-                    devname.erase();
-                    if (!fp) break;
-
                     if (consolePipe) {
                         // need the trailing '\0'
-                        if(!android::base::WriteFully(fileno(fp), pipePurpose.c_str(),
-                                    pipePurpose.size() + 1)) {
-                            fclose(fp);
-                            context->retval = EXIT_FAILURE;
-                            goto exit;
+                        if (!android::base::WriteFully(fd, pipePurpose.c_str(),
+                                                       pipePurpose.size() + 1)) {
+                            close(fd);
+                            return EXIT_FAILURE;
                         }
                     }
-
                     // close output and error channels, replace with console
-                    android::close_output(context);
-                    android::close_error(context);
-                    context->stderr_stdout = true;
-                    context->output = fp;
-                    context->output_fd = fileno(fp);
-                    if (context->stderr_null) break;
-                    context->stderr_stdout = true;
-                    context->error = fp;
-                    context->error_fd = fileno(fp);
+                    dup2(fd, output_fd_.get());
+                    dup2(fd, STDERR_FILENO);
+                    close(fd);
                 }
                 break;
 
@@ -1269,65 +865,53 @@
                 break;
 
             case ':':
-                logcat_panic(context, HELP_TRUE, "Option -%c needs an argument\n", optopt);
-                goto exit;
+                error(EXIT_FAILURE, 0, "Option '%s' needs an argument.", argv[optind - 1]);
+                break;
 
             case 'h':
-                show_help(context);
-                show_format_help(context);
-                goto exit;
+                show_help();
+                show_format_help();
+                return EXIT_SUCCESS;
+
+            case '?':
+                error(EXIT_FAILURE, 0, "Unknown option '%s'.", argv[optind - 1]);
+                break;
 
             default:
-                logcat_panic(context, HELP_TRUE, "Unrecognized Option %c\n", optopt);
-                goto exit;
+                error(EXIT_FAILURE, 0, "Unknown getopt_long() result '%c'.", c);
         }
     }
 
-    if (context->maxCount && got_t) {
-        logcat_panic(context, HELP_TRUE,
-                     "Cannot use -m (--max-count) and -t together\n");
-        goto exit;
+    if (max_count_ && got_t) {
+        error(EXIT_FAILURE, 0, "Cannot use -m (--max-count) and -t together.");
     }
-    if (context->printItAnyways && (!context->regex || !context->maxCount)) {
+    if (print_it_anyways_ && (!regex_ || !max_count_)) {
         // One day it would be nice if --print -v color and --regex <expr>
         // could play with each other and show regex highlighted content.
-        // clang-format off
-        if (context->error) {
-            fprintf(context->error, "WARNING: "
-                            "--print ignored, to be used in combination with\n"
-                                "         "
-                            "--regex <expr> and --max-count <N>\n");
-        }
-        context->printItAnyways = false;
+        fprintf(stderr,
+                "WARNING: "
+                "--print ignored, to be used in combination with\n"
+                "         "
+                "--regex <expr> and --max-count <N>\n");
+        print_it_anyways_ = false;
     }
 
-    if (!context->devices) {
-        dev = context->devices = new log_device_t("main", false);
-        context->devCount = 1;
-        if (android_name_to_log_id("system") == LOG_ID_SYSTEM) {
-            dev = dev->next = new log_device_t("system", false);
-            context->devCount++;
-        }
-        if (android_name_to_log_id("crash") == LOG_ID_CRASH) {
-            dev = dev->next = new log_device_t("crash", false);
-            context->devCount++;
-        }
+    // If no buffers are specified, default to using these buffers.
+    if (id_mask == 0) {
+        id_mask = (1 << LOG_ID_MAIN) | (1 << LOG_ID_SYSTEM) | (1 << LOG_ID_CRASH) |
+                  (1 << LOG_ID_KERNEL);
     }
 
-    if (!!context->logRotateSizeKBytes && !context->outputFileName) {
-        logcat_panic(context, HELP_TRUE, "-r requires -f as well\n");
-        goto exit;
+    if (log_rotate_size_kb_ != 0 && !output_file_name_) {
+        error(EXIT_FAILURE, 0, "-r requires -f as well.");
     }
 
-    if (!!setId) {
-        if (!context->outputFileName) {
-            logcat_panic(context, HELP_TRUE,
-                         "--id='%s' requires -f as well\n", setId);
-            goto exit;
+    if (setId != 0) {
+        if (!output_file_name_) {
+            error(EXIT_FAILURE, 0, "--id='%s' requires -f as well.", setId);
         }
 
-        std::string file_name = android::base::StringPrintf(
-                                        "%s.id", context->outputFileName);
+        std::string file_name = StringPrintf("%s.id", output_file_name_);
         std::string file;
         bool file_ok = android::base::ReadFileToString(file_name, &file);
         android::base::WriteStringToFile(setId, file_name, S_IRUSR | S_IWUSR,
@@ -1336,398 +920,264 @@
     }
 
     if (!hasSetLogFormat) {
-        const char* logFormat = android::getenv(context, "ANDROID_PRINTF_LOG");
+        const char* logFormat = getenv("ANDROID_PRINTF_LOG");
 
         if (!!logFormat) {
-            std::unique_ptr<char, void (*)(void*)> formats(strdup(logFormat),
-                                                           free);
-            char* sv = nullptr;  // protect against -ENOMEM above
-            char* arg = formats.get();
-            while (!!(arg = strtok_r(arg, delimiters, &sv))) {
-                err = setLogFormat(context, arg);
+            for (const auto& arg : Split(logFormat, delimiters)) {
+                int err = SetLogFormat(arg.c_str());
                 // environment should not cause crash of logcat
-                if ((err < 0) && context->error) {
-                    fprintf(context->error,
-                            "invalid format in ANDROID_PRINTF_LOG '%s'\n", arg);
+                if (err < 0) {
+                    fprintf(stderr, "invalid format in ANDROID_PRINTF_LOG '%s'\n", arg.c_str());
                 }
-                arg = nullptr;
                 if (err > 0) hasSetLogFormat = true;
             }
         }
         if (!hasSetLogFormat) {
-            setLogFormat(context, "threadtime");
+            SetLogFormat("threadtime");
         }
     }
 
     if (forceFilters.size()) {
-        err = android_log_addFilterString(context->logformat,
-                                          forceFilters.c_str());
+        int err = android_log_addFilterString(logformat_.get(), forceFilters.c_str());
         if (err < 0) {
-            logcat_panic(context, HELP_FALSE,
-                         "Invalid filter expression in logcat args\n");
-            goto exit;
+            error(EXIT_FAILURE, 0, "Invalid filter expression in logcat args.");
         }
     } else if (argc == optind) {
         // Add from environment variable
-        const char* env_tags_orig = android::getenv(context, "ANDROID_LOG_TAGS");
+        const char* env_tags_orig = getenv("ANDROID_LOG_TAGS");
 
         if (!!env_tags_orig) {
-            err = android_log_addFilterString(context->logformat,
-                                              env_tags_orig);
+            int err = android_log_addFilterString(logformat_.get(), env_tags_orig);
 
             if (err < 0) {
-                logcat_panic(context, HELP_TRUE,
-                            "Invalid filter expression in ANDROID_LOG_TAGS\n");
-                goto exit;
+                error(EXIT_FAILURE, 0, "Invalid filter expression in ANDROID_LOG_TAGS.");
             }
         }
     } else {
         // Add from commandline
         for (int i = optind ; i < argc ; i++) {
-            // skip stderr redirections of _all_ kinds
-            if ((argv[i][0] == '2') && (argv[i][1] == '>')) continue;
-            // skip stdout redirections of _all_ kinds
-            if (argv[i][0] == '>') continue;
-
-            err = android_log_addFilterString(context->logformat, argv[i]);
+            int err = android_log_addFilterString(logformat_.get(), argv[i]);
             if (err < 0) {
-                logcat_panic(context, HELP_TRUE,
-                             "Invalid filter expression '%s'\n", argv[i]);
-                goto exit;
+                error(EXIT_FAILURE, 0, "Invalid filter expression '%s'.", argv[i]);
             }
         }
     }
 
-    dev = context->devices;
-    if (tail_time != log_time::EPOCH) {
-        logger_list = android_logger_list_alloc_time(mode, tail_time, pid);
-    } else {
-        logger_list = android_logger_list_alloc(mode, tail_lines, pid);
+    if (mode & ANDROID_LOG_PSTORE) {
+        if (output_file_name_) {
+            error(EXIT_FAILURE, 0, "-c is ambiguous with both -f and -L specified.");
+        }
+        if (setLogSize || getLogSize || printStatistics || getPruneList || setPruneList) {
+            error(EXIT_FAILURE, 0, "-L is incompatible with -g/-G, -S, and -p/-P.");
+        }
+        if (clearLog) {
+            unlink("/sys/fs/pstore/pmsg-ramoops-0");
+            return EXIT_SUCCESS;
+        }
     }
-    // We have three orthogonal actions below to clear, set log size and
-    // get log size. All sharing the same iteration loop.
-    while (dev) {
-        dev->logger_list = logger_list;
-        dev->logger = android_logger_open(logger_list,
-                                          android_name_to_log_id(dev->device));
-        if (!dev->logger) {
-            reportErrorName(&openDeviceFail, dev->device, allSelected);
-            dev = dev->next;
-            continue;
+
+    if (output_file_name_) {
+        if (setLogSize || getLogSize || printStatistics || getPruneList || setPruneList) {
+            error(EXIT_FAILURE, 0, "-f is incompatible with -g/-G, -S, and -p/-P.");
         }
 
         if (clearLog || setId) {
-            if (context->outputFileName) {
-                int maxRotationCountDigits =
-                    (context->maxRotatedLogs > 0) ?
-                        (int)(floor(log10(context->maxRotatedLogs) + 1)) :
-                        0;
+            int max_rotation_count_digits =
+                    max_rotated_logs_ > 0 ? (int)(floor(log10(max_rotated_logs_) + 1)) : 0;
 
-                for (int i = context->maxRotatedLogs ; i >= 0 ; --i) {
-                    std::string file;
+            for (int i = max_rotated_logs_; i >= 0; --i) {
+                std::string file;
 
-                    if (!i) {
-                        file = android::base::StringPrintf(
-                            "%s", context->outputFileName);
-                    } else {
-                        file = android::base::StringPrintf("%s.%.*d",
-                            context->outputFileName, maxRotationCountDigits, i);
-                    }
-
-                    if (!file.length()) {
-                        perror("while clearing log files");
-                        reportErrorName(&clearFail, dev->device, allSelected);
-                        break;
-                    }
-
-                    err = unlink(file.c_str());
-
-                    if (err < 0 && errno != ENOENT && !clearFail) {
-                        perror("while clearing log files");
-                        reportErrorName(&clearFail, dev->device, allSelected);
-                    }
+                if (!i) {
+                    file = output_file_name_;
+                } else {
+                    file = StringPrintf("%s.%.*d", output_file_name_, max_rotation_count_digits, i);
                 }
-            } else if (android_logger_clear(dev->logger)) {
-                reportErrorName(&clearFail, dev->device, allSelected);
+
+                int err = unlink(file.c_str());
+
+                if (err < 0 && errno != ENOENT) {
+                    fprintf(stderr, "failed to delete log file '%s': %s\n", file.c_str(),
+                            strerror(errno));
+                }
+            }
+        }
+
+        if (clearLog) {
+            return EXIT_SUCCESS;
+        }
+    }
+
+    std::unique_ptr<logger_list, decltype(&android_logger_list_free)> logger_list{
+            nullptr, &android_logger_list_free};
+    if (tail_time != log_time::EPOCH) {
+        logger_list.reset(android_logger_list_alloc_time(mode, tail_time, pid));
+    } else {
+        logger_list.reset(android_logger_list_alloc(mode, tail_lines, pid));
+    }
+    // We have three orthogonal actions below to clear, set log size and
+    // get log size. All sharing the same iteration loop.
+    std::vector<std::string> open_device_failures;
+    std::vector<std::string> clear_failures;
+    std::vector<std::string> set_size_failures;
+    std::vector<std::string> get_size_failures;
+
+    for (int i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
+        if (!(id_mask & (1 << i))) continue;
+        const char* buffer_name = android_log_id_to_name(static_cast<log_id_t>(i));
+
+        auto logger = android_logger_open(logger_list.get(), static_cast<log_id_t>(i));
+        if (logger == nullptr) {
+            ReportErrorName(buffer_name, security_buffer_selected, &open_device_failures);
+            continue;
+        }
+
+        if (clearLog) {
+            if (android_logger_clear(logger)) {
+                ReportErrorName(buffer_name, security_buffer_selected, &clear_failures);
             }
         }
 
         if (setLogSize) {
-            if (android_logger_set_log_size(dev->logger, setLogSize)) {
-                reportErrorName(&setSizeFail, dev->device, allSelected);
+            if (android_logger_set_log_size(logger, setLogSize)) {
+                ReportErrorName(buffer_name, security_buffer_selected, &set_size_failures);
             }
         }
 
         if (getLogSize) {
-            long size = android_logger_get_log_size(dev->logger);
-            long readable = android_logger_get_log_readable_size(dev->logger);
+            long size = android_logger_get_log_size(logger);
+            long readable = android_logger_get_log_readable_size(logger);
 
-            if ((size < 0) || (readable < 0)) {
-                reportErrorName(&getSizeFail, dev->device, allSelected);
+            if (size < 0 || readable < 0) {
+                ReportErrorName(buffer_name, security_buffer_selected, &get_size_failures);
             } else {
                 auto size_format = format_of_size(size);
                 auto readable_format = format_of_size(readable);
                 std::string str = android::base::StringPrintf(
-                       "%s: ring buffer is %lu %sB (%lu %sB consumed),"
-                         " max entry is %d B, max payload is %d B\n",
-                       dev->device,
-                       size_format.first, size_format.second,
-                       readable_format.first, readable_format.second,
-                       (int)LOGGER_ENTRY_MAX_LEN,
-                       (int)LOGGER_ENTRY_MAX_PAYLOAD);
-                TEMP_FAILURE_RETRY(write(context->output_fd,
-                                         str.data(), str.length()));
+                        "%s: ring buffer is %lu %sB (%lu %sB consumed),"
+                        " max entry is %d B, max payload is %d B\n",
+                        buffer_name, size_format.first, size_format.second, readable_format.first,
+                        readable_format.second, (int)LOGGER_ENTRY_MAX_LEN,
+                        (int)LOGGER_ENTRY_MAX_PAYLOAD);
+                TEMP_FAILURE_RETRY(write(output_fd_.get(), str.data(), str.length()));
             }
         }
-
-        dev = dev->next;
     }
 
-    context->retval = EXIT_SUCCESS;
-
     // report any errors in the above loop and exit
-    if (openDeviceFail) {
-        logcat_panic(context, HELP_FALSE,
-                     "Unable to open log device '%s'\n", openDeviceFail);
-        goto close;
+    if (!open_device_failures.empty()) {
+        error(EXIT_FAILURE, 0, "Unable to open log device%s '%s'.",
+              open_device_failures.size() > 1 ? "s" : "", Join(open_device_failures, ",").c_str());
     }
-    if (clearFail) {
-        logcat_panic(context, HELP_FALSE,
-                     "failed to clear the '%s' log\n", clearFail);
-        goto close;
+    if (!clear_failures.empty()) {
+        error(EXIT_FAILURE, 0, "failed to clear the '%s' log%s.", Join(clear_failures, ",").c_str(),
+              clear_failures.size() > 1 ? "s" : "");
     }
-    if (setSizeFail) {
-        logcat_panic(context, HELP_FALSE,
-                     "failed to set the '%s' log size\n", setSizeFail);
-        goto close;
+    if (!set_size_failures.empty()) {
+        error(EXIT_FAILURE, 0, "failed to set the '%s' log size%s.",
+              Join(set_size_failures, ",").c_str(), set_size_failures.size() > 1 ? "s" : "");
     }
-    if (getSizeFail) {
-        logcat_panic(context, HELP_FALSE,
-                     "failed to get the readable '%s' log size", getSizeFail);
-        goto close;
+    if (!get_size_failures.empty()) {
+        error(EXIT_FAILURE, 0, "failed to get the readable '%s' log size%s.",
+              Join(get_size_failures, ",").c_str(), get_size_failures.size() > 1 ? "s" : "");
     }
 
     if (setPruneList) {
         size_t len = strlen(setPruneList);
-        // extra 32 bytes are needed by android_logger_set_prune_list
-        size_t bLen = len + 32;
-        char* buf = nullptr;
-        if (asprintf(&buf, "%-*s", (int)(bLen - 1), setPruneList) > 0) {
-            buf[len] = '\0';
-            if (android_logger_set_prune_list(logger_list, buf, bLen)) {
-                logcat_panic(context, HELP_FALSE,
-                             "failed to set the prune list");
-            }
-            free(buf);
-        } else {
-            logcat_panic(context, HELP_FALSE,
-                         "failed to set the prune list (alloc)");
+        if (android_logger_set_prune_list(logger_list.get(), setPruneList, len)) {
+            error(EXIT_FAILURE, 0, "Failed to set the prune list.");
         }
-        goto close;
+        return EXIT_SUCCESS;
     }
 
     if (printStatistics || getPruneList) {
-        size_t len = 8192;
-        char* buf;
+        std::string buf(8192, '\0');
+        size_t ret_length = 0;
+        int retry = 32;
 
-        for (int retry = 32; (retry >= 0) && ((buf = new char[len]));
-             delete[] buf, buf = nullptr, --retry) {
+        for (; retry >= 0; --retry) {
             if (getPruneList) {
-                android_logger_get_prune_list(logger_list, buf, len);
+                android_logger_get_prune_list(logger_list.get(), buf.data(), buf.size());
             } else {
-                android_logger_get_statistics(logger_list, buf, len);
+                android_logger_get_statistics(logger_list.get(), buf.data(), buf.size());
             }
-            buf[len - 1] = '\0';
-            if (atol(buf) < 3) {
-                delete[] buf;
-                buf = nullptr;
+
+            ret_length = atol(buf.c_str());
+            if (ret_length < 3) {
+                error(EXIT_FAILURE, 0, "Failed to read data.");
+            }
+
+            if (ret_length < buf.size()) {
                 break;
             }
-            size_t ret = atol(buf) + 1;
-            if (ret <= len) {
-                len = ret;
-                break;
-            }
-            len = ret;
+
+            buf.resize(ret_length + 1);
         }
 
-        if (!buf) {
-            logcat_panic(context, HELP_FALSE, "failed to read data");
-            goto close;
+        if (retry < 0) {
+            error(EXIT_FAILURE, 0, "Failed to read data.");
         }
 
-        // remove trailing FF
-        char* cp = buf + len - 1;
-        *cp = '\0';
-        bool truncated = *--cp != '\f';
-        if (!truncated) *cp = '\0';
-
-        // squash out the byte count
-        cp = buf;
-        if (!truncated) {
-            while (isdigit(*cp)) ++cp;
-            if (*cp == '\n') ++cp;
+        buf.resize(ret_length);
+        if (buf.back() == '\f') {
+            buf.pop_back();
         }
 
-        len = strlen(cp);
-        TEMP_FAILURE_RETRY(write(context->output_fd, cp, len));
-        delete[] buf;
-        goto close;
+        // Remove the byte count prefix
+        const char* cp = buf.c_str();
+        while (isdigit(*cp)) ++cp;
+        if (*cp == '\n') ++cp;
+
+        size_t len = strlen(cp);
+        TEMP_FAILURE_RETRY(write(output_fd_.get(), cp, len));
+        return EXIT_SUCCESS;
     }
 
-    if (getLogSize || setLogSize || clearLog) goto close;
+    if (getLogSize || setLogSize || clearLog) return EXIT_SUCCESS;
 
-    setupOutputAndSchedulingPolicy(context, !(mode & ANDROID_LOG_NONBLOCK));
-    if (context->stop) goto close;
+    SetupOutputAndSchedulingPolicy(!(mode & ANDROID_LOG_NONBLOCK));
 
-    // LOG_EVENT_INT(10, 12345);
-    // LOG_EVENT_LONG(11, 0x1122334455667788LL);
-    // LOG_EVENT_STRING(0, "whassup, doc?");
-
-    dev = nullptr;
-
-    while (!context->stop &&
-           (!context->maxCount || (context->printCount < context->maxCount))) {
+    while (!max_count_ || print_count_ < max_count_) {
         struct log_msg log_msg;
-        int ret = android_logger_list_read(logger_list, &log_msg);
+        int ret = android_logger_list_read(logger_list.get(), &log_msg);
         if (!ret) {
-            logcat_panic(context, HELP_FALSE, "read: unexpected EOF!\n");
-            break;
+            error(EXIT_FAILURE, 0, R"init(Unexpected EOF!
+
+This means that either the device shut down, logd crashed, or this instance of logcat was unable to read log
+messages as quickly as they were being produced.
+
+If you have enabled significant logging, look into using the -G option to increase log buffer sizes.)init");
         }
 
         if (ret < 0) {
             if (ret == -EAGAIN) break;
 
             if (ret == -EIO) {
-                logcat_panic(context, HELP_FALSE, "read: unexpected EOF!\n");
-                break;
+                error(EXIT_FAILURE, 0, "Unexpected EOF!");
             }
             if (ret == -EINVAL) {
-                logcat_panic(context, HELP_FALSE, "read: unexpected length.\n");
-                break;
+                error(EXIT_FAILURE, 0, "Unexpected length.");
             }
-            logcat_panic(context, HELP_FALSE, "logcat read failure\n");
-            break;
+            error(EXIT_FAILURE, errno, "Logcat read failure");
         }
 
-        log_device_t* d;
-        for (d = context->devices; d; d = d->next) {
-            if (android_name_to_log_id(d->device) == log_msg.id()) break;
-        }
-        if (!d) {
-            context->devCount = 2; // set to Multiple
-            d = &unexpected;
-            d->binary = log_msg.id() == LOG_ID_EVENTS;
+        if (log_msg.id() > LOG_ID_MAX) {
+            error(EXIT_FAILURE, 0, "Unexpected log id (%d) over LOG_ID_MAX (%d).", log_msg.id(),
+                  LOG_ID_MAX);
         }
 
-        if (dev != d) {
-            dev = d;
-            maybePrintStart(context, dev, printDividers);
-            if (context->stop) break;
-        }
-        if (context->printBinary) {
-            printBinary(context, &log_msg);
+        PrintDividers(log_msg.id(), printDividers);
+
+        if (print_binary_) {
+            TEMP_FAILURE_RETRY(write(output_fd_.get(), &log_msg, log_msg.len()));
         } else {
-            processBuffer(context, dev, &log_msg);
+            ProcessBuffer(&log_msg);
         }
     }
-
-close:
-    // Short and sweet. Implemented generic version in android_logcat_destroy.
-    while (!!(dev = context->devices)) {
-        context->devices = dev->next;
-        delete dev;
-    }
-    android_logger_list_free(logger_list);
-
-exit:
-    // close write end of pipe to help things along
-    if (context->output_fd == context->fds[1]) {
-        android::close_output(context);
-    }
-    if (context->error_fd == context->fds[1]) {
-        android::close_error(context);
-    }
-    if (context->fds[1] >= 0) {
-        // NB: should be closed by the above
-        int save_errno = errno;
-        close(context->fds[1]);
-        errno = save_errno;
-        context->fds[1] = -1;
-    }
-    context->thread_stopped = true;
-    return context->retval;
+    return EXIT_SUCCESS;
 }
 
-// Can block
-int android_logcat_run_command(android_logcat_context ctx,
-                               int output, int error,
-                               int argc, char* const* argv,
-                               char* const* envp) {
-    android_logcat_context_internal* context = ctx;
-
-    context->output_fd = output;
-    context->error_fd = error;
-    context->argc = argc;
-    context->argv = argv;
-    context->envp = envp;
-    context->stop = false;
-    context->thread_stopped = false;
-    return __logcat(context);
-}
-
-// Finished with context
-int android_logcat_destroy(android_logcat_context* ctx) {
-    android_logcat_context_internal* context = *ctx;
-
-    if (!context) return -EBADF;
-
-    *ctx = nullptr;
-
-    context->stop = true;
-
-    while (context->thread_stopped == false) {
-        // Makes me sad, replace thread_stopped with semaphore.  Short lived.
-        sched_yield();
-    }
-
-    delete context->regex;
-    context->argv_hold.clear();
-    context->args.clear();
-    context->envp_hold.clear();
-    context->envs.clear();
-    if (context->fds[0] >= 0) {
-        close(context->fds[0]);
-        context->fds[0] = -1;
-    }
-    android::close_output(context);
-    android::close_error(context);
-
-    if (context->fds[1] >= 0) {
-        // NB: this should be closed by close_output, but just in case...
-        close(context->fds[1]);
-        context->fds[1] = -1;
-    }
-
-    android_closeEventTagMap(context->eventTagMap);
-
-    // generic cleanup of devices list to handle all possible dirty cases
-    log_device_t* dev;
-    while (!!(dev = context->devices)) {
-        struct logger_list* logger_list = dev->logger_list;
-        if (logger_list) {
-            for (log_device_t* d = dev; d; d = d->next) {
-                if (d->logger_list == logger_list) d->logger_list = nullptr;
-            }
-            android_logger_list_free(logger_list);
-        }
-        context->devices = dev->next;
-        delete dev;
-    }
-
-    int retval = context->retval;
-
-    free(context);
-
-    return retval;
+int main(int argc, char** argv) {
+    Logcat logcat;
+    return logcat.Run(argc, argv);
 }
diff --git a/logcat/logcat.h b/logcat/logcat.h
deleted file mode 100644
index 85ed7da..0000000
--- a/logcat/logcat.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2005-2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <stdio.h>
-
-/*
- * The opaque context
- */
-typedef struct android_logcat_context_internal* android_logcat_context;
-
-/* Creates a context associated with this logcat instance
- *
- * Returns a pointer to the context, or a NULL on error.
- */
-android_logcat_context create_android_logcat();
-
-/* Collects and outputs the logcat data to output and error file descriptors
- *
- * Will block, performed in-thread and in-process
- *
- * The output file descriptor variable, if greater than or equal to 0, is
- * where the output (ie: stdout) will be sent. The file descriptor is closed
- * on android_logcat_destroy which terminates the instance, or when an -f flag
- * (output redirect to a file) is present in the command.  The error file
- * descriptor variable, if greater than or equal to 0, is where the error
- * stream (ie: stderr) will be sent, also closed on android_logcat_destroy.
- * The error file descriptor can be set to equal to the output file descriptor,
- * which will mix output and error stream content, and will defer closure of
- * the file descriptor on -f flag redirection.  Negative values for the file
- * descriptors will use stdout and stderr FILE references respectively
- * internally, and will not close the references as noted above.
- *
- * Return value is 0 for success, non-zero for errors.
- */
-int android_logcat_run_command(android_logcat_context ctx, int output, int error, int argc,
-                               char* const* argv, char* const* envp);
-
-/* Finished with context
- *
- * Kill the command thread ASAP (if any), and free up all associated resources.
- *
- * Return value is the result of the android_logcat_run_command, or
- * non-zero for any errors.
- */
-int android_logcat_destroy(android_logcat_context* ctx);
diff --git a/logcat/logcat_main.cpp b/logcat/logcat_main.cpp
deleted file mode 100644
index ecfa2ba..0000000
--- a/logcat/logcat_main.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <signal.h>
-#include <stdlib.h>
-
-#include "logcat.h"
-
-int main(int argc, char** argv, char** envp) {
-    android_logcat_context ctx = create_android_logcat();
-    if (!ctx) return -1;
-    signal(SIGPIPE, exit);
-    int retval = android_logcat_run_command(ctx, -1, -1, argc, argv, envp);
-    int ret = android_logcat_destroy(&ctx);
-    if (!ret) ret = retval;
-    return ret;
-}
diff --git a/logcat/logcatd b/logcat/logcatd
new file mode 100755
index 0000000..5a1415d
--- /dev/null
+++ b/logcat/logcatd
@@ -0,0 +1,29 @@
+#! /system/bin/sh
+
+# This is primarily meant to be used by logpersist.  This script is run as an init service, which
+# first reads the 'last' logcat to persistent storage with `-L` then run logcat again without
+# `-L` to read the current logcat buffers to persistent storage.
+
+# init sets the umask to 077 for forked processes. logpersist needs to create files that are group
+# readable. So relax the umask to only disallow group wx and world rwx.
+umask 037
+
+has_last="false"
+for arg in "$@"; do
+  if [ "$arg" == "-L" -o "$arg" == "--last" ]; then
+    has_last="true"
+  fi
+done
+
+if [ "$has_last" == "true" ]; then
+  logcat "$@"
+fi
+
+args_without_last=()
+for arg in "$@"; do
+  if [ "$arg" != "-L" -a "$arg" != "--last" ]; then
+    ARGS+=("$arg")
+  fi
+done
+
+exec logcat "${ARGS[@]}"
diff --git a/logcat/logcatd.rc b/logcat/logcatd.rc
index 07040b0..64d5500 100644
--- a/logcat/logcatd.rc
+++ b/logcat/logcatd.rc
@@ -4,24 +4,22 @@
 # Make sure any property changes are only performed with /data mounted, after
 # post-fs-data state because otherwise behavior is undefined. The exceptions
 # are device adjustments for logcatd service properties (persist.* overrides
-# notwithstanding) for logd.logpersistd.size and logd.logpersistd.buffer.
+# notwithstanding) for logd.logpersistd.size logd.logpersistd.rotate_kbytes and
+# logd.logpersistd.buffer.
 
 # persist to non-persistent trampolines to permit device properties can be
 # overridden when /data mounts, or during runtime.
-on property:persist.logd.logpersistd.size=256
-    setprop persist.logd.logpersistd.size ""
-    setprop logd.logpersistd.size ""
+on property:persist.logd.logpersistd.count=*
+    # expect /init to report failure if property empty (default)
+    setprop persist.logd.logpersistd.size ${persist.logd.logpersistd.count}
 
 on property:persist.logd.logpersistd.size=*
-    # expect /init to report failure if property empty (default)
     setprop logd.logpersistd.size ${persist.logd.logpersistd.size}
 
-on property:persist.logd.logpersistd.buffer=all
-    setprop persist.logd.logpersistd.buffer ""
-    setprop logd.logpersistd.buffer ""
+on property:persist.logd.logpersistd.rotate_kbytes=*
+    setprop logd.logpersistd.rotate_kbytes ${persist.logd.logpersistd.rotate_kbytes}
 
 on property:persist.logd.logpersistd.buffer=*
-    # expect /init to report failure if property empty (default)
     setprop logd.logpersistd.buffer ${persist.logd.logpersistd.buffer}
 
 on property:persist.logd.logpersistd=logcatd
@@ -32,8 +30,8 @@
     setprop logd.logpersistd.enable true
 
 on property:logd.logpersistd.enable=true && property:logd.logpersistd=logcatd
-    # all exec/services are called with umask(077), so no gain beyond 0700
-    mkdir /data/misc/logd 0700 logd log
+    # log group should be able to read persisted logs
+    mkdir /data/misc/logd 0750 logd log
     start logcatd
 
 # stop logcatd service and clear data
@@ -54,7 +52,7 @@
     stop logcatd
 
 # logcatd service
-service logcatd /system/bin/logcatd -L -b ${logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${logd.logpersistd.size:-256} --id=${ro.build.id}
+service logcatd /system/bin/logcatd -L -b ${logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r ${logd.logpersistd.rotate_kbytes:-2048} -n ${logd.logpersistd.size:-256} --id=${ro.build.id}
     class late_start
     disabled
     # logd for write to /data/misc/logd, log group for read from log daemon
diff --git a/logcat/logcatd_main.cpp b/logcat/logcatd_main.cpp
deleted file mode 100644
index c131846..0000000
--- a/logcat/logcatd_main.cpp
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <signal.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <string>
-#include <vector>
-
-#include "logcat.h"
-
-int main(int argc, char** argv, char** envp) {
-    android_logcat_context ctx = create_android_logcat();
-    if (!ctx) return -1;
-
-    signal(SIGPIPE, exit);
-
-    // Save and detect presence of -L or --last flag
-    std::vector<std::string> args;
-    bool last = false;
-    for (int i = 0; i < argc; ++i) {
-        if (!argv[i]) continue;
-        args.push_back(std::string(argv[i]));
-        if (!strcmp(argv[i], "-L") || !strcmp(argv[i], "--last")) last = true;
-    }
-
-    // Generate argv from saved content
-    std::vector<const char*> argv_hold;
-    for (auto& str : args) argv_hold.push_back(str.c_str());
-    argv_hold.push_back(nullptr);
-
-    int ret = 0;
-    if (last) {
-        // Run logcat command with -L flag
-        ret = android_logcat_run_command(ctx, -1, -1, argv_hold.size() - 1,
-                                         (char* const*)&argv_hold[0], envp);
-        // Remove -L and --last flags from argument list
-        for (std::vector<const char*>::iterator it = argv_hold.begin();
-             it != argv_hold.end();) {
-            if (!*it || (strcmp(*it, "-L") && strcmp(*it, "--last"))) {
-                ++it;
-            } else {
-                it = argv_hold.erase(it);
-            }
-        }
-        // fall through to re-run the command regardless of the arguments
-        // passed in.  For instance, we expect -h to report help stutter.
-    }
-
-    // Run logcat command without -L flag
-    int retval = android_logcat_run_command(ctx, -1, -1, argv_hold.size() - 1,
-                                            (char* const*)&argv_hold[0], envp);
-    if (!ret) ret = retval;
-    retval = android_logcat_destroy(&ctx);
-    if (!ret) ret = retval;
-    return ret;
-}
diff --git a/logcat/logpersist b/logcat/logpersist
index c09b6b2..05b46f0 100755
--- a/logcat/logpersist
+++ b/logcat/logpersist
@@ -148,9 +148,9 @@
     echo "WARNING: Can not use --size or --buffer with ${progname%.*}.stop" >&2
   fi
   if [ "true" = "${clear}" ]; then
-    setprop ${property} "clear"
+    setprop ${property#persist.} "clear"
   else
-    setprop ${property} "stop"
+    setprop ${property#persist.} "stop"
   fi
   if [ -n "`getprop ${property#persist.}.buffer`" ]; then
     setprop ${property}.buffer ""
diff --git a/logd/Android.bp b/logd/Android.bp
index 9b86258..b337b7c 100644
--- a/logd/Android.bp
+++ b/logd/Android.bp
@@ -39,7 +39,6 @@
         "FlushCommand.cpp",
         "LogBuffer.cpp",
         "LogBufferElement.cpp",
-        "LogBufferInterface.cpp",
         "LogTimes.cpp",
         "LogStatistics.cpp",
         "LogWhiteBlackList.cpp",
diff --git a/logd/CommandListener.cpp b/logd/CommandListener.cpp
index 7a843d8..694b5fa 100644
--- a/logd/CommandListener.cpp
+++ b/logd/CommandListener.cpp
@@ -19,6 +19,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <math.h>
 #include <netinet/in.h>
 #include <stdlib.h>
 #include <string.h>
@@ -186,14 +187,26 @@
     : LogCommand("getStatistics"), mBuf(*buf) {
 }
 
-static std::string package_string(const std::string& str) {
-    // Calculate total buffer size prefix, count is the string length w/o nul
-    char fmt[32];
-    for (size_t l = str.length(), y = 0, x = 6; y != x;
-         y = x, x = strlen(fmt) - 2) {
-        snprintf(fmt, sizeof(fmt), "%zu\n%%s\n\f", l + x);
+// This returns a string with a length prefix with the format <length>\n<data>\n\f.  The length
+// prefix includes the length of the prefix itself.
+static std::string PackageString(const std::string& str) {
+    size_t overhead_length = 3;  // \n \n \f.
+
+    // Number of digits needed to represent length(str + overhead_length).
+    size_t str_size_digits = 1 + static_cast<size_t>(log10(str.size() + overhead_length));
+    // Number of digits needed to represent the total size.
+    size_t total_size_digits =
+            1 + static_cast<size_t>(log10(str.size() + overhead_length + str_size_digits));
+
+    // If adding the size prefix causes a new digit to be required to represent the new total
+    // size, add it to the 'overhead_length'.  This can only happen once, since each new digit
+    // allows for 10x the previous size to be recorded.
+    if (total_size_digits != str_size_digits) {
+        overhead_length++;
     }
-    return android::base::StringPrintf(fmt, str.c_str());
+
+    size_t total_size = str.size() + overhead_length + str_size_digits;
+    return android::base::StringPrintf("%zu\n%s\n\f", total_size, str.c_str());
 }
 
 int CommandListener::GetStatisticsCmd::runCommand(SocketClient* cli, int argc,
@@ -228,8 +241,7 @@
         }
     }
 
-    cli->sendMsg(
-        package_string(mBuf.formatStatistics(uid, pid, logMask)).c_str());
+    cli->sendMsg(PackageString(mBuf.formatStatistics(uid, pid, logMask)).c_str());
     return 0;
 }
 
@@ -240,7 +252,7 @@
 int CommandListener::GetPruneListCmd::runCommand(SocketClient* cli,
                                                  int /*argc*/, char** /*argv*/) {
     setname();
-    cli->sendMsg(package_string(mBuf.formatPrune()).c_str());
+    cli->sendMsg(PackageString(mBuf.formatPrune()).c_str());
     return 0;
 }
 
@@ -316,12 +328,11 @@
             cli->sendMsg("can not mix id= with either format= or name=");
             return 0;
         }
-        cli->sendMsg(package_string(mBuf.formatEntry(atoi(id), uid)).c_str());
+        cli->sendMsg(PackageString(mBuf.formatEntry(atoi(id), uid)).c_str());
         return 0;
     }
 
-    cli->sendMsg(
-        package_string(mBuf.formatGetEventTag(uid, name, format)).c_str());
+    cli->sendMsg(PackageString(mBuf.formatGetEventTag(uid, name, format)).c_str());
 
     return 0;
 }
diff --git a/logd/LogAudit.cpp b/logd/LogAudit.cpp
index a21555c..d9cc0db 100644
--- a/logd/LogAudit.cpp
+++ b/logd/LogAudit.cpp
@@ -143,10 +143,6 @@
 
 void LogAudit::auditParse(const std::string& string, uid_t uid,
                           std::string* bug_num) {
-    if (!__android_log_is_debuggable()) {
-        bug_num->assign("");
-        return;
-    }
     static std::map<std::string, std::string> denial_to_bug =
         populateDenialMap();
     std::string scontext = denialParse(string, ':', "scontext=u:object_r:");
@@ -160,7 +156,7 @@
     }
     auto search = denial_to_bug.find(scontext + tcontext + tclass);
     if (search != denial_to_bug.end()) {
-        bug_num->assign(" b/" + search->second);
+        bug_num->assign(" " + search->second);
     } else {
         bug_num->assign("");
     }
@@ -229,70 +225,17 @@
         static const char log_warning[] = { KMSG_PRIORITY(LOG_WARNING) };
         static const char newline[] = "\n";
 
-        // Dedupe messages, checking for identical messages starting with avc:
-        static unsigned count;
-        static char* last_str;
-        static bool last_info;
+        auditParse(str, uid, &denial_metadata);
+        iov[0].iov_base = info ? const_cast<char*>(log_info) : const_cast<char*>(log_warning);
+        iov[0].iov_len = info ? sizeof(log_info) : sizeof(log_warning);
+        iov[1].iov_base = str;
+        iov[1].iov_len = strlen(str);
+        iov[2].iov_base = const_cast<char*>(denial_metadata.c_str());
+        iov[2].iov_len = denial_metadata.length();
+        iov[3].iov_base = const_cast<char*>(newline);
+        iov[3].iov_len = strlen(newline);
 
-        if (last_str != nullptr) {
-            static const char avc[] = "): avc: ";
-            char* avcl = strstr(last_str, avc);
-            bool skip = false;
-
-            if (avcl) {
-                char* avcr = strstr(str, avc);
-
-                skip = avcr &&
-                       !fastcmp<strcmp>(avcl + strlen(avc), avcr + strlen(avc));
-                if (skip) {
-                    ++count;
-                    free(last_str);
-                    last_str = strdup(str);
-                    last_info = info;
-                }
-            }
-            if (!skip) {
-                static const char resume[] = " duplicate messages suppressed\n";
-                iov[0].iov_base = last_info ? const_cast<char*>(log_info)
-                                            : const_cast<char*>(log_warning);
-                iov[0].iov_len =
-                    last_info ? sizeof(log_info) : sizeof(log_warning);
-                iov[1].iov_base = last_str;
-                iov[1].iov_len = strlen(last_str);
-                iov[2].iov_base = const_cast<char*>(denial_metadata.c_str());
-                iov[2].iov_len = denial_metadata.length();
-                if (count > 1) {
-                    iov[3].iov_base = const_cast<char*>(resume);
-                    iov[3].iov_len = strlen(resume);
-                } else {
-                    iov[3].iov_base = const_cast<char*>(newline);
-                    iov[3].iov_len = strlen(newline);
-                }
-
-                writev(fdDmesg, iov, arraysize(iov));
-                free(last_str);
-                last_str = nullptr;
-            }
-        }
-        if (last_str == nullptr) {
-            count = 0;
-            last_str = strdup(str);
-            last_info = info;
-        }
-        if (count == 0) {
-            auditParse(str, uid, &denial_metadata);
-            iov[0].iov_base = info ? const_cast<char*>(log_info)
-                                   : const_cast<char*>(log_warning);
-            iov[0].iov_len = info ? sizeof(log_info) : sizeof(log_warning);
-            iov[1].iov_base = str;
-            iov[1].iov_len = strlen(str);
-            iov[2].iov_base = const_cast<char*>(denial_metadata.c_str());
-            iov[2].iov_len = denial_metadata.length();
-            iov[3].iov_base = const_cast<char*>(newline);
-            iov[3].iov_len = strlen(newline);
-
-            writev(fdDmesg, iov, arraysize(iov));
-        }
+        writev(fdDmesg, iov, arraysize(iov));
     }
 
     if (!main && !events) {
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index 9cbc7c4..1cf2061 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -207,31 +207,37 @@
     // exact entry with time specified in ms or us precision.
     if ((realtime.tv_nsec % 1000) == 0) ++realtime.tv_nsec;
 
-    LogBufferElement* elem =
-        new LogBufferElement(log_id, realtime, uid, pid, tid, msg, len);
-    if (log_id != LOG_ID_SECURITY) {
-        int prio = ANDROID_LOG_INFO;
-        const char* tag = nullptr;
-        size_t tag_len = 0;
-        if (log_id == LOG_ID_EVENTS || log_id == LOG_ID_STATS) {
-            tag = tagToName(elem->getTag());
-            if (tag) {
-                tag_len = strlen(tag);
-            }
-        } else {
-            prio = *msg;
-            tag = msg + 1;
-            tag_len = strnlen(tag, len - 1);
+    LogBufferElement* elem = new LogBufferElement(log_id, realtime, uid, pid, tid, msg, len);
+
+    // b/137093665: don't coalesce security messages.
+    if (log_id == LOG_ID_SECURITY) {
+        wrlock();
+        log(elem);
+        unlock();
+
+        return len;
+    }
+
+    int prio = ANDROID_LOG_INFO;
+    const char* tag = nullptr;
+    size_t tag_len = 0;
+    if (log_id == LOG_ID_EVENTS || log_id == LOG_ID_STATS) {
+        tag = tagToName(elem->getTag());
+        if (tag) {
+            tag_len = strlen(tag);
         }
-        if (!__android_log_is_loggable_len(prio, tag, tag_len,
-                                           ANDROID_LOG_VERBOSE)) {
-            // Log traffic received to total
-            wrlock();
-            stats.addTotal(elem);
-            unlock();
-            delete elem;
-            return -EACCES;
-        }
+    } else {
+        prio = *msg;
+        tag = msg + 1;
+        tag_len = strnlen(tag, len - 1);
+    }
+    if (!__android_log_is_loggable_len(prio, tag, tag_len, ANDROID_LOG_VERBOSE)) {
+        // Log traffic received to total
+        wrlock();
+        stats.addTotal(elem);
+        unlock();
+        delete elem;
+        return -EACCES;
     }
 
     wrlock();
@@ -638,6 +644,8 @@
     if (stats.sizes(id) > (2 * log_buffer_size(id))) {  // +100%
         // A misbehaving or slow reader has its connection
         // dropped if we hit too much memory pressure.
+        android::prdebug("Kicking blocked reader, pid %d, from LogBuffer::kickMe()\n",
+                         me->mClient->getPid());
         me->release_Locked();
     } else if (me->mTimeout.tv_sec || me->mTimeout.tv_nsec) {
         // Allow a blocked WRAP timeout reader to
@@ -645,6 +653,9 @@
         me->triggerReader_Locked();
     } else {
         // tell slow reader to skip entries to catch up
+        android::prdebug(
+                "Skipping %lu entries from slow reader, pid %d, from LogBuffer::kickMe()\n",
+                pruneRows, me->mClient->getPid());
         me->triggerSkip_Locked(id, pruneRows);
     }
 }
@@ -1051,6 +1062,9 @@
                     LogTimeEntry* entry = times->get();
                     // Killer punch
                     if (entry->isWatching(id)) {
+                        android::prdebug(
+                                "Kicking blocked reader, pid %d, from LogBuffer::clear()\n",
+                                entry->mClient->getPid());
                         entry->release_Locked();
                     }
                     times++;
@@ -1185,7 +1199,7 @@
         unlock();
 
         // range locking in LastLogTimes looks after us
-        curr = element->flushTo(reader, this, privileged, sameTid);
+        curr = element->flushTo(reader, this, sameTid);
 
         if (curr == element->FLUSH_ERROR) {
             return curr;
diff --git a/logd/LogBuffer.h b/logd/LogBuffer.h
index 774d4ab..c2d5b97 100644
--- a/logd/LogBuffer.h
+++ b/logd/LogBuffer.h
@@ -27,7 +27,6 @@
 #include <sysutils/SocketClient.h>
 
 #include "LogBufferElement.h"
-#include "LogBufferInterface.h"
 #include "LogStatistics.h"
 #include "LogTags.h"
 #include "LogTimes.h"
@@ -75,7 +74,7 @@
 
 typedef std::list<LogBufferElement*> LogBufferElementCollection;
 
-class LogBuffer : public LogBufferInterface {
+class LogBuffer {
     LogBufferElementCollection mLogElements;
     pthread_rwlock_t mLogElementsLock;
 
@@ -108,14 +107,14 @@
     LastLogTimes& mTimes;
 
     explicit LogBuffer(LastLogTimes* times);
-    ~LogBuffer() override;
+    ~LogBuffer();
     void init();
     bool isMonotonic() {
         return monotonic;
     }
 
-    int log(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid, pid_t tid,
-            const char* msg, uint16_t len) override;
+    int log(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid, pid_t tid, const char* msg,
+            uint16_t len);
     // lastTid is an optional context to help detect if the last previous
     // valid message was from the same source so we can differentiate chatty
     // filter types (identical or expired)
@@ -159,12 +158,7 @@
     const char* pidToName(pid_t pid) {
         return stats.pidToName(pid);
     }
-    virtual uid_t pidToUid(pid_t pid) override {
-        return stats.pidToUid(pid);
-    }
-    virtual pid_t tidToPid(pid_t tid) override {
-        return stats.tidToPid(tid);
-    }
+    uid_t pidToUid(pid_t pid) { return stats.pidToUid(pid); }
     const char* uidToName(uid_t uid) {
         return stats.uidToName(uid);
     }
diff --git a/logd/LogBufferElement.cpp b/logd/LogBufferElement.cpp
index 2fd9f95..ec81933 100644
--- a/logd/LogBufferElement.cpp
+++ b/logd/LogBufferElement.cpp
@@ -56,14 +56,7 @@
       mLogId(elem.mLogId),
       mDropped(elem.mDropped) {
     if (mDropped) {
-        if (elem.isBinary() && elem.mMsg != nullptr) {
-            // for the following "len" value, refer to : setDropped(uint16_t value), getTag()
-            const int len = sizeof(android_event_header_t);
-            mMsg = new char[len];
-            memcpy(mMsg, elem.mMsg, len);
-        } else {
-            mMsg = nullptr;
-        }
+        mTag = elem.getTag();
     } else {
         mMsg = new char[mMsgLen];
         memcpy(mMsg, elem.mMsg, mMsgLen);
@@ -71,31 +64,43 @@
 }
 
 LogBufferElement::~LogBufferElement() {
-    delete[] mMsg;
+    if (!mDropped) {
+        delete[] mMsg;
+    }
 }
 
 uint32_t LogBufferElement::getTag() const {
-    return (isBinary() &&
-            ((mDropped && mMsg != nullptr) ||
-             (!mDropped && mMsgLen >= sizeof(android_event_header_t))))
-               ? reinterpret_cast<const android_event_header_t*>(mMsg)->tag
-               : 0;
+    // Binary buffers have no tag.
+    if (!isBinary()) {
+        return 0;
+    }
+
+    // Dropped messages store the tag in place of mMsg.
+    if (mDropped) {
+        return mTag;
+    }
+
+    // For non-dropped messages, we get the tag from the message header itself.
+    if (mMsgLen < sizeof(android_event_header_t)) {
+        return 0;
+    }
+
+    return reinterpret_cast<const android_event_header_t*>(mMsg)->tag;
 }
 
 uint16_t LogBufferElement::setDropped(uint16_t value) {
-    // The tag information is saved in mMsg data, if the tag is non-zero
-    // save only the information needed to get the tag.
-    if (getTag() != 0) {
-        if (mMsgLen > sizeof(android_event_header_t)) {
-            char* truncated_msg = new char[sizeof(android_event_header_t)];
-            memcpy(truncated_msg, mMsg, sizeof(android_event_header_t));
-            delete[] mMsg;
-            mMsg = truncated_msg;
-        }  // mMsgLen == sizeof(android_event_header_t), already at minimum.
-    } else {
-        delete[] mMsg;
-        mMsg = nullptr;
+    if (mDropped) {
+        return mDroppedCount = value;
     }
+
+    // The tag information is saved in mMsg data, which is in a union with mTag, used after mDropped
+    // is set to true. Therefore we save the tag value aside, delete mMsg, then set mTag to the tag
+    // value in its place.
+    auto old_tag = getTag();
+    delete[] mMsg;
+    mMsg = nullptr;
+
+    mTag = old_tag;
     mDropped = true;
     return mDroppedCount = value;
 }
@@ -239,14 +244,10 @@
     return retval;
 }
 
-log_time LogBufferElement::flushTo(SocketClient* reader, LogBuffer* parent,
-                                   bool privileged, bool lastSame) {
-    struct logger_entry_v4 entry;
+log_time LogBufferElement::flushTo(SocketClient* reader, LogBuffer* parent, bool lastSame) {
+    struct logger_entry entry = {};
 
-    memset(&entry, 0, sizeof(struct logger_entry_v4));
-
-    entry.hdr_size = privileged ? sizeof(struct logger_entry_v4)
-                                : sizeof(struct logger_entry_v3);
+    entry.hdr_size = sizeof(struct logger_entry);
     entry.lid = mLogId;
     entry.pid = mPid;
     entry.tid = mTid;
diff --git a/logd/LogBufferElement.h b/logd/LogBufferElement.h
index 57b0a95..fd790e4 100644
--- a/logd/LogBufferElement.h
+++ b/logd/LogBufferElement.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LOGD_LOG_BUFFER_ELEMENT_H__
-#define _LOGD_LOG_BUFFER_ELEMENT_H__
+#pragma once
 
 #include <stdatomic.h>
 #include <stdint.h>
@@ -41,7 +40,10 @@
     const uint32_t mPid;
     const uint32_t mTid;
     log_time mRealTime;
-    char* mMsg;
+    union {
+        char* mMsg;    // mDropped == false
+        int32_t mTag;  // mDropped == true
+    };
     union {
         const uint16_t mMsgLen;  // mDropped == false
         uint16_t mDroppedCount;  // mDropped == true
@@ -93,8 +95,5 @@
     }
 
     static const log_time FLUSH_ERROR;
-    log_time flushTo(SocketClient* writer, LogBuffer* parent, bool privileged,
-                     bool lastSame);
+    log_time flushTo(SocketClient* writer, LogBuffer* parent, bool lastSame);
 };
-
-#endif
diff --git a/logd/LogBufferInterface.cpp b/logd/LogBufferInterface.cpp
deleted file mode 100644
index 4b6d363..0000000
--- a/logd/LogBufferInterface.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "LogBufferInterface.h"
-#include "LogUtils.h"
-
-LogBufferInterface::LogBufferInterface() {
-}
-LogBufferInterface::~LogBufferInterface() {
-}
-uid_t LogBufferInterface::pidToUid(pid_t pid) {
-    return android::pidToUid(pid);
-}
-pid_t LogBufferInterface::tidToPid(pid_t tid) {
-    return android::tidToPid(tid);
-}
diff --git a/logd/LogBufferInterface.h b/logd/LogBufferInterface.h
deleted file mode 100644
index f31e244..0000000
--- a/logd/LogBufferInterface.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (C) 2012-2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _LOGD_LOG_BUFFER_INTERFACE_H__
-#define _LOGD_LOG_BUFFER_INTERFACE_H__
-
-#include <sys/types.h>
-
-#include <android-base/macros.h>
-#include <log/log_id.h>
-#include <log/log_time.h>
-
-// Abstract interface that handles log when log available.
-class LogBufferInterface {
-   public:
-    LogBufferInterface();
-    virtual ~LogBufferInterface();
-    // Handles a log entry when available in LogListener.
-    // Returns the size of the handled log message.
-    virtual int log(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid,
-                    pid_t tid, const char* msg, uint16_t len) = 0;
-
-    virtual uid_t pidToUid(pid_t pid);
-    virtual pid_t tidToPid(pid_t tid);
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(LogBufferInterface);
-};
-
-#endif  // _LOGD_LOG_BUFFER_INTERFACE_H__
diff --git a/logd/LogListener.cpp b/logd/LogListener.cpp
index 2f22778..ba61042 100644
--- a/logd/LogListener.cpp
+++ b/logd/LogListener.cpp
@@ -14,9 +14,7 @@
  * limitations under the License.
  */
 
-#include <ctype.h>
 #include <limits.h>
-#include <stdio.h>
 #include <sys/cdefs.h>
 #include <sys/prctl.h>
 #include <sys/socket.h>
@@ -32,9 +30,8 @@
 #include "LogListener.h"
 #include "LogUtils.h"
 
-LogListener::LogListener(LogBufferInterface* buf, LogReader* reader)
-    : SocketListener(getLogSocket(), false), logbuf(buf), reader(reader) {
-}
+LogListener::LogListener(LogBuffer* buf, LogReader* reader)
+    : SocketListener(getLogSocket(), false), logbuf(buf), reader(reader) {}
 
 bool LogListener::onDataAvailable(SocketClient* cli) {
     static bool name_set;
@@ -44,8 +41,7 @@
     }
 
     // + 1 to ensure null terminator if MAX_PAYLOAD buffer is received
-    char buffer[sizeof_log_id_t + sizeof(uint16_t) + sizeof(log_time) +
-                LOGGER_ENTRY_MAX_PAYLOAD + 1];
+    char buffer[sizeof(android_log_header_t) + LOGGER_ENTRY_MAX_PAYLOAD + 1];
     struct iovec iov = { buffer, sizeof(buffer) - 1 };
 
     alignas(4) char control[CMSG_SPACE(sizeof(struct ucred))];
@@ -78,11 +74,8 @@
         cmsg = CMSG_NXTHDR(&hdr, cmsg);
     }
 
-    struct ucred fake_cred;
     if (cred == nullptr) {
-        cred = &fake_cred;
-        cred->pid = 0;
-        cred->uid = DEFAULT_OVERFLOWUID;
+        return false;
     }
 
     if (cred->uid == AID_LOGD) {
@@ -106,40 +99,16 @@
         return false;
     }
 
-    // Check credential validity, acquire corrected details if not supplied.
-    if (cred->pid == 0) {
-        cred->pid = logbuf ? logbuf->tidToPid(header->tid)
-                           : android::tidToPid(header->tid);
-        if (cred->pid == getpid()) {
-            // We expect that /proc/<tid>/ is accessible to self even without
-            // readproc group, so that we will always drop messages that come
-            // from any of our logd threads and their library calls.
-            return false;  // ignore self
-        }
-    }
-    if (cred->uid == DEFAULT_OVERFLOWUID) {
-        uid_t uid =
-            logbuf ? logbuf->pidToUid(cred->pid) : android::pidToUid(cred->pid);
-        if (uid == AID_LOGD) {
-            uid = logbuf ? logbuf->pidToUid(header->tid)
-                         : android::pidToUid(cred->pid);
-        }
-        if (uid != AID_LOGD) cred->uid = uid;
-    }
-
     char* msg = ((char*)buffer) + sizeof(android_log_header_t);
     n -= sizeof(android_log_header_t);
 
     // NB: hdr.msg_flags & MSG_TRUNC is not tested, silently passing a
     // truncated message to the logs.
 
-    if (logbuf != nullptr) {
-        int res = logbuf->log(
-            logId, header->realtime, cred->uid, cred->pid, header->tid, msg,
-            ((size_t)n <= UINT16_MAX) ? (uint16_t)n : UINT16_MAX);
-        if (res > 0 && reader != nullptr) {
-            reader->notifyNewLog(static_cast<log_mask_t>(1 << logId));
-        }
+    int res = logbuf->log(logId, header->realtime, cred->uid, cred->pid, header->tid, msg,
+                          ((size_t)n <= UINT16_MAX) ? (uint16_t)n : UINT16_MAX);
+    if (res > 0) {
+        reader->notifyNewLog(static_cast<log_mask_t>(1 << logId));
     }
 
     return true;
diff --git a/logd/LogListener.h b/logd/LogListener.h
index a562a54..8fe3da4 100644
--- a/logd/LogListener.h
+++ b/logd/LogListener.h
@@ -20,22 +20,12 @@
 #include <sysutils/SocketListener.h>
 #include "LogReader.h"
 
-// DEFAULT_OVERFLOWUID is defined in linux/highuid.h, which is not part of
-// the uapi headers for userspace to use.  This value is filled in on the
-// out-of-band socket credentials if the OS fails to find one available.
-// One of the causes of this is if SO_PASSCRED is set, all the packets before
-// that point will have this value.  We also use it in a fake credential if
-// no socket credentials are supplied.
-#ifndef DEFAULT_OVERFLOWUID
-#define DEFAULT_OVERFLOWUID 65534
-#endif
-
 class LogListener : public SocketListener {
-    LogBufferInterface* logbuf;
+    LogBuffer* logbuf;
     LogReader* reader;
 
    public:
-    LogListener(LogBufferInterface* buf, LogReader* reader /* nullable */);
+     LogListener(LogBuffer* buf, LogReader* reader);
 
    protected:
     virtual bool onDataAvailable(SocketClient* cli);
diff --git a/logd/LogStatistics.cpp b/logd/LogStatistics.cpp
index 116e08e..431b778 100644
--- a/logd/LogStatistics.cpp
+++ b/logd/LogStatistics.cpp
@@ -837,35 +837,12 @@
     }
     return AID_LOGD;  // associate this with the logger
 }
-
-pid_t tidToPid(pid_t tid) {
-    char buffer[512];
-    snprintf(buffer, sizeof(buffer), "/proc/%u/status", tid);
-    FILE* fp = fopen(buffer, "r");
-    if (fp) {
-        while (fgets(buffer, sizeof(buffer), fp)) {
-            int pid = tid;
-            char space = 0;
-            if ((sscanf(buffer, "Tgid: %d%c", &pid, &space) == 2) &&
-                isspace(space)) {
-                fclose(fp);
-                return pid;
-            }
-        }
-        fclose(fp);
-    }
-    return tid;
-}
 }
 
 uid_t LogStatistics::pidToUid(pid_t pid) {
     return pidTable.add(pid)->second.getUid();
 }
 
-pid_t LogStatistics::tidToPid(pid_t tid) {
-    return tidTable.add(tid)->second.getPid();
-}
-
 // caller must free character string
 const char* LogStatistics::pidToName(pid_t pid) const {
     // An inconvenient truth ... getName() can alter the object
diff --git a/logd/LogStatistics.h b/logd/LogStatistics.h
index 469f6dc..0782de3 100644
--- a/logd/LogStatistics.h
+++ b/logd/LogStatistics.h
@@ -306,6 +306,10 @@
     std::string format(const LogStatistics& stat, log_id_t id) const;
 };
 
+namespace android {
+uid_t pidToUid(pid_t pid);
+}
+
 struct PidEntry : public EntryBaseDropped {
     const pid_t pid;
     uid_t uid;
@@ -385,13 +389,6 @@
           uid(android::pidToUid(tid)),
           name(android::tidToName(tid)) {
     }
-    TidEntry(pid_t tid)
-        : EntryBaseDropped(),
-          tid(tid),
-          pid(android::tidToPid(tid)),
-          uid(android::pidToUid(tid)),
-          name(android::tidToName(tid)) {
-    }
     explicit TidEntry(const LogBufferElement* element)
         : EntryBaseDropped(element),
           tid(element->getTid()),
@@ -787,7 +784,6 @@
     // helper (must be locked directly or implicitly by mLogElementsLock)
     const char* pidToName(pid_t pid) const;
     uid_t pidToUid(pid_t pid);
-    pid_t tidToPid(pid_t tid);
     const char* uidToName(uid_t uid) const;
 };
 
diff --git a/logd/LogTags.cpp b/logd/LogTags.cpp
index f19e7b0..0cc7886 100644
--- a/logd/LogTags.cpp
+++ b/logd/LogTags.cpp
@@ -311,9 +311,7 @@
         if (log_msg.entry.len <= sizeof(uint32_t)) continue;
         uint32_t Tag = get4LE(msg);
         if (Tag != TAG_DEF_LOG_TAG) continue;
-        uid_t uid = (log_msg.entry.hdr_size >= sizeof(logger_entry_v4))
-                        ? log_msg.entry.uid
-                        : AID_ROOT;
+        uid_t uid = log_msg.entry.uid;
 
         std::string Name;
         std::string Format;
diff --git a/logd/LogUtils.h b/logd/LogUtils.h
index 4dcd3e7..fa9f398 100644
--- a/logd/LogUtils.h
+++ b/logd/LogUtils.h
@@ -38,8 +38,6 @@
 // Caller must own and free returned value
 char* pidToName(pid_t pid);
 char* tidToName(pid_t tid);
-uid_t pidToUid(pid_t pid);
-pid_t tidToPid(pid_t tid);
 
 // Furnished in LogTags.cpp. Thread safe.
 const char* tagToName(uint32_t tag);
diff --git a/logd/README.property b/logd/README.property
index da5f96f..1b7e165 100644
--- a/logd/README.property
+++ b/logd/README.property
@@ -6,7 +6,7 @@
 ro.logd.auditd.main        bool   true   selinux audit messages sent to main.
 ro.logd.auditd.events      bool   true   selinux audit messages sent to events.
 persist.logd.security      bool   false  Enable security buffer.
-ro.device_owner            bool   false  Override persist.logd.security to false
+ro.organization_owned      bool   false  Override persist.logd.security to false
 ro.logd.kernel             bool+ svelte+ Enable klogd daemon
 ro.logd.statistics         bool+ svelte+ Enable logcat -S statistics.
 ro.debuggable              number        if not "1", logd.statistics &
@@ -17,10 +17,13 @@
 					 Responds to logcatd, clear and stop.
 logd.logpersistd.buffer          persist logpersistd buffers to collect
 logd.logpersistd.size            persist logpersistd size in MB
+logd.logpersistd.rotate_kbytes   	 persist logpersistd outout file size in KB.
 persist.logd.logpersistd   string        Enable logpersist daemon, "logcatd"
                                          turns on logcat -f in logd context.
 persist.logd.logpersistd.buffer    all   logpersistd buffers to collect
 persist.logd.logpersistd.size      256   logpersistd size in MB
+persist.logd.logpersistd.count     256   sets max number of rotated logs to <count>.
+persist.logd.logpersistd.rotate_kbytes   1024  logpersistd output file size in KB
 persist.logd.size          number  ro    Global default size of the buffer for
                                          all log ids at initial startup, at
                                          runtime use: logcat -b all -G <value>
diff --git a/logd/fuzz/Android.bp b/logd/fuzz/Android.bp
new file mode 100644
index 0000000..299242d
--- /dev/null
+++ b/logd/fuzz/Android.bp
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+cc_fuzz {
+    name: "log_buffer_log_fuzzer",
+    srcs: [
+        "log_buffer_log_fuzzer.cpp",
+    ],
+    static_libs: [
+        "libbase",
+        "libcutils",
+        "libselinux",
+        "liblog",
+        "liblogd",
+        "libcutils",
+    ],
+    cflags: ["-Werror"],
+}
diff --git a/logd/fuzz/log_buffer_log_fuzzer.cpp b/logd/fuzz/log_buffer_log_fuzzer.cpp
new file mode 100644
index 0000000..4d1589b
--- /dev/null
+++ b/logd/fuzz/log_buffer_log_fuzzer.cpp
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <string>
+
+#include "../LogBuffer.h"
+#include "../LogTimes.h"
+
+// We don't want to waste a lot of entropy on messages
+#define MAX_MSG_LENGTH 5
+
+// Tag IDs usually start at 1000, we only want to try 1000 through 1009
+#define MIN_TAG_ID 1000
+#define TAG_MOD 10
+
+namespace android {
+struct LogInput {
+  public:
+    log_id_t log_id;
+    log_time realtime;
+    uid_t uid;
+    pid_t pid;
+    pid_t tid;
+    unsigned int log_mask;
+};
+
+int write_log_messages(const uint8_t** pdata, size_t* data_left, LogBuffer* log_buffer) {
+    const uint8_t* data = *pdata;
+    const LogInput* logInput = reinterpret_cast<const LogInput*>(data);
+    data += sizeof(LogInput);
+    *data_left -= sizeof(LogInput);
+
+    uint32_t tag = MIN_TAG_ID + data[0] % TAG_MOD;
+    uint8_t msg_length = data[1] % MAX_MSG_LENGTH;
+    if (msg_length < 2) {
+        // Not enough data for message
+        return 0;
+    }
+
+    data += 2 * sizeof(uint8_t);
+    *data_left -= 2 * sizeof(uint8_t);
+
+    if (*data_left < msg_length) {
+        // Not enough data for tag and message
+        *pdata = data;
+        return 0;
+    }
+
+    // We need nullterm'd strings
+    char msg[sizeof(uint32_t) + MAX_MSG_LENGTH + sizeof(char)];
+    char* msg_only = msg + sizeof(uint32_t);
+    memcpy(msg, &tag, sizeof(uint32_t));
+    memcpy(msg_only, data, msg_length);
+    msg_only[msg_length] = '\0';
+    data += msg_length;
+    *data_left -= msg_length;
+
+    // Other elements not in enum.
+    log_id_t log_id = static_cast<log_id_t>(unsigned(logInput->log_id) % (LOG_ID_MAX + 1));
+    log_buffer->log(log_id, logInput->realtime, logInput->uid, logInput->pid, logInput->tid, msg,
+                    sizeof(uint32_t) + msg_length + 1);
+    log_buffer->formatStatistics(logInput->uid, logInput->pid, logInput->log_mask);
+    *pdata = data;
+    return 1;
+}
+
+// Because system/core/logd/main.cpp redefines these.
+void prdebug(char const* fmt, ...) {
+    va_list ap;
+    va_start(ap, fmt);
+    vfprintf(stderr, fmt, ap);
+    va_end(ap);
+}
+char* uidToName(uid_t) {
+    return strdup("fake");
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    // We want a random tag length and a random remaining message length
+    if (data == nullptr || size < sizeof(LogInput) + 2 * sizeof(uint8_t)) {
+        return 0;
+    }
+
+    LastLogTimes times;
+    LogBuffer log_buffer(&times);
+    size_t data_left = size;
+    const uint8_t** pdata = &data;
+
+    log_buffer.enableStatistics();
+    log_buffer.initPrune(nullptr);
+    // We want to get pruning code to get called.
+    log_id_for_each(i) { log_buffer.setSize(i, 10000); }
+
+    while (data_left >= sizeof(LogInput) + 2 * sizeof(uint8_t)) {
+        if (!write_log_messages(pdata, &data_left, &log_buffer)) {
+            return 0;
+        }
+    }
+
+    log_id_for_each(i) { log_buffer.clear(i); }
+    return 0;
+}
+}  // namespace android
diff --git a/logd/logd.rc b/logd/logd.rc
index 438419a..530f342 100644
--- a/logd/logd.rc
+++ b/logd/logd.rc
@@ -6,7 +6,8 @@
     file /dev/kmsg w
     user logd
     group logd system package_info readproc
-    capabilities SYSLOG AUDIT_CONTROL SETGID
+    capabilities SYSLOG AUDIT_CONTROL
+    priority 10
     writepid /dev/cpuset/system-background/tasks
 
 service logd-reinit /system/bin/logd --reinit
diff --git a/logd/logtagd.rc b/logd/logtagd.rc
index 46aa8c1..248a78c 100644
--- a/logd/logtagd.rc
+++ b/logd/logtagd.rc
@@ -2,7 +2,7 @@
 # logtagd event log tag service (debug only)
 #
 on post-fs-data
-    mkdir /data/misc/logd 0700 logd log
+    mkdir /data/misc/logd 0750 logd log
     write /data/misc/logd/event-log-tags ""
     chown logd log /data/misc/logd/event-log-tags
     chmod 0600 /data/misc/logd/event-log-tags
diff --git a/logd/main.cpp b/logd/main.cpp
index fd3cdf8..acf9a07 100644
--- a/logd/main.cpp
+++ b/logd/main.cpp
@@ -17,6 +17,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <linux/capability.h>
 #include <poll.h>
 #include <sched.h>
 #include <semaphore.h>
@@ -57,53 +58,22 @@
     '<', '0' + LOG_MAKEPRI(LOG_DAEMON, LOG_PRI(PRI)) / 10, \
         '0' + LOG_MAKEPRI(LOG_DAEMON, LOG_PRI(PRI)) % 10, '>'
 
-//
-// The service is designed to be run by init, it does not respond well
-// to starting up manually. When starting up manually the sockets will
-// fail to open typically for one of the following reasons:
-//     EADDRINUSE if logger is running.
-//     EACCESS if started without precautions (below)
-//
-// Here is a cookbook procedure for starting up logd manually assuming
-// init is out of the way, pedantically all permissions and SELinux
-// security is put back in place:
-//
-//    setenforce 0
-//    rm /dev/socket/logd*
-//    chmod 777 /dev/socket
-//        # here is where you would attach the debugger or valgrind for example
-//    runcon u:r:logd:s0 /system/bin/logd </dev/null >/dev/null 2>&1 &
-//    sleep 1
-//    chmod 755 /dev/socket
-//    chown logd.logd /dev/socket/logd*
-//    restorecon /dev/socket/logd*
-//    setenforce 1
-//
-// If minimalism prevails, typical for debugging and security is not a concern:
-//
-//    setenforce 0
-//    chmod 777 /dev/socket
-//    logd
-//
-
-static int drop_privs(bool klogd, bool auditd) {
-    sched_param param = {};
-
+// The service is designed to be run by init, it does not respond well to starting up manually. Init
+// has a 'sigstop' feature that sends SIGSTOP to a service immediately before calling exec().  This
+// allows debuggers, etc to be attached to logd at the very beginning, while still having init
+// handle the user, groups, capabilities, files, etc setup.
+static int DropPrivs(bool klogd, bool auditd) {
     if (set_sched_policy(0, SP_BACKGROUND) < 0) {
         android::prdebug("failed to set background scheduling policy");
         return -1;
     }
 
+    sched_param param = {};
     if (sched_setscheduler((pid_t)0, SCHED_BATCH, &param) < 0) {
         android::prdebug("failed to set batch scheduler");
         return -1;
     }
 
-    if (setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND) < 0) {
-        android::prdebug("failed to set background cgroup");
-        return -1;
-    }
-
     if (!__android_logger_property_get_bool("ro.debuggable",
                                             BOOL_DEFAULT_FALSE) &&
         prctl(PR_SET_DUMPABLE, 0) == -1) {
@@ -111,52 +81,29 @@
         return -1;
     }
 
-    std::unique_ptr<struct _cap_struct, int (*)(void*)> caps(cap_init(),
-                                                             cap_free);
-    if (cap_clear(caps.get()) < 0) return -1;
-    cap_value_t cap_value[] = { CAP_SETGID,  // must be first for below
-                                klogd ? CAP_SYSLOG : CAP_SETGID,
-                                auditd ? CAP_AUDIT_CONTROL : CAP_SETGID };
-    if (cap_set_flag(caps.get(), CAP_PERMITTED, arraysize(cap_value), cap_value,
-                     CAP_SET) < 0) {
+    std::unique_ptr<struct _cap_struct, int (*)(void*)> caps(cap_init(), cap_free);
+    if (cap_clear(caps.get()) < 0) {
+        android::prdebug("cap_clear() failed");
         return -1;
     }
-    if (cap_set_flag(caps.get(), CAP_EFFECTIVE, arraysize(cap_value), cap_value,
-                     CAP_SET) < 0) {
-        return -1;
+    if (klogd) {
+        cap_value_t cap_syslog = CAP_SYSLOG;
+        if (cap_set_flag(caps.get(), CAP_PERMITTED, 1, &cap_syslog, CAP_SET) < 0 ||
+            cap_set_flag(caps.get(), CAP_EFFECTIVE, 1, &cap_syslog, CAP_SET) < 0) {
+            android::prdebug("Failed to set CAP_SYSLOG");
+            return -1;
+        }
+    }
+    if (auditd) {
+        cap_value_t cap_audit_control = CAP_AUDIT_CONTROL;
+        if (cap_set_flag(caps.get(), CAP_PERMITTED, 1, &cap_audit_control, CAP_SET) < 0 ||
+            cap_set_flag(caps.get(), CAP_EFFECTIVE, 1, &cap_audit_control, CAP_SET) < 0) {
+            android::prdebug("Failed to set CAP_AUDIT_CONTROL");
+            return -1;
+        }
     }
     if (cap_set_proc(caps.get()) < 0) {
-        android::prdebug(
-            "failed to set CAP_SETGID, CAP_SYSLOG or CAP_AUDIT_CONTROL (%d)",
-            errno);
-        return -1;
-    }
-
-    gid_t groups[] = { AID_READPROC };
-
-    if (setgroups(arraysize(groups), groups) == -1) {
-        android::prdebug("failed to set AID_READPROC groups");
-        return -1;
-    }
-
-    if (setgid(AID_LOGD) != 0) {
-        android::prdebug("failed to set AID_LOGD gid");
-        return -1;
-    }
-
-    if (setuid(AID_LOGD) != 0) {
-        android::prdebug("failed to set AID_LOGD uid");
-        return -1;
-    }
-
-    if (cap_set_flag(caps.get(), CAP_PERMITTED, 1, cap_value, CAP_CLEAR) < 0) {
-        return -1;
-    }
-    if (cap_set_flag(caps.get(), CAP_EFFECTIVE, 1, cap_value, CAP_CLEAR) < 0) {
-        return -1;
-    }
-    if (cap_set_proc(caps.get()) < 0) {
-        android::prdebug("failed to clear CAP_SETGID (%d)", errno);
+        android::prdebug("failed to set CAP_SYSLOG or CAP_AUDIT_CONTROL (%d)", errno);
         return -1;
     }
 
@@ -205,67 +152,14 @@
     }
 }
 
-static sem_t uidName;
-static uid_t uid;
-static char* name;
-
 static sem_t reinit;
 static bool reinit_running = false;
 static LogBuffer* logBuf = nullptr;
 
-static bool package_list_parser_cb(pkg_info* info, void* /* userdata */) {
-    bool rc = true;
-    if (info->uid == uid) {
-        name = strdup(info->name);
-        // false to stop processing
-        rc = false;
-    }
-
-    packagelist_free(info);
-    return rc;
-}
-
 static void* reinit_thread_start(void* /*obj*/) {
     prctl(PR_SET_NAME, "logd.daemon");
-    set_sched_policy(0, SP_BACKGROUND);
-    setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND);
-
-    // We should drop to AID_LOGD, if we are anything else, we have
-    // even lesser privileges and accept our fate.
-    gid_t groups[] = {
-        AID_SYSTEM,        // search access to /data/system path
-        AID_PACKAGE_INFO,  // readonly access to /data/system/packages.list
-    };
-    if (setgroups(arraysize(groups), groups) == -1) {
-        android::prdebug(
-            "logd.daemon: failed to set AID_SYSTEM AID_PACKAGE_INFO groups");
-    }
-    if (setgid(AID_LOGD) != 0) {
-        android::prdebug("logd.daemon: failed to set AID_LOGD gid");
-    }
-    if (setuid(AID_LOGD) != 0) {
-        android::prdebug("logd.daemon: failed to set AID_LOGD uid");
-    }
-
-    cap_t caps = cap_init();
-    (void)cap_clear(caps);
-    (void)cap_set_proc(caps);
-    (void)cap_free(caps);
 
     while (reinit_running && !sem_wait(&reinit) && reinit_running) {
-        // uidToName Privileged Worker
-        if (uid) {
-            name = nullptr;
-
-            // if we got the perms wrong above, this would spam if we reported
-            // problems with acquisition of an uid name from the packages.
-            (void)packagelist_parse(package_list_parser_cb, nullptr);
-
-            uid = 0;
-            sem_post(&uidName);
-            continue;
-        }
-
         if (fdDmesg >= 0) {
             static const char reinit_message[] = { KMSG_PRIORITY(LOG_INFO),
                                                    'l',
@@ -302,26 +196,30 @@
     return nullptr;
 }
 
-static sem_t sem_name;
-
 char* android::uidToName(uid_t u) {
-    if (!u || !reinit_running) {
-        return nullptr;
-    }
+    struct Userdata {
+        uid_t uid;
+        char* name;
+    } userdata = {
+            .uid = u,
+            .name = nullptr,
+    };
 
-    sem_wait(&sem_name);
+    packagelist_parse(
+            [](pkg_info* info, void* callback_parameter) {
+                auto userdata = reinterpret_cast<Userdata*>(callback_parameter);
+                bool result = true;
+                if (info->uid == userdata->uid) {
+                    userdata->name = strdup(info->name);
+                    // false to stop processing
+                    result = false;
+                }
+                packagelist_free(info);
+                return result;
+            },
+            &userdata);
 
-    // Not multi-thread safe, we use sem_name to protect
-    uid = u;
-
-    name = nullptr;
-    sem_post(&reinit);
-    sem_wait(&uidName);
-    char* ret = name;
-
-    sem_post(&sem_name);
-
-    return ret;
+    return userdata.name;
 }
 
 // Serves as a global method to trigger reinitialization
@@ -373,11 +271,6 @@
 }
 
 static int issueReinit() {
-    cap_t caps = cap_init();
-    (void)cap_clear(caps);
-    (void)cap_set_proc(caps);
-    (void)cap_free(caps);
-
     int sock = TEMP_FAILURE_RETRY(socket_local_client(
         "logd", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM));
     if (sock < 0) return -errno;
@@ -440,10 +333,13 @@
         if (fdPmesg < 0) android::prdebug("Failed to open %s\n", proc_kmsg);
     }
 
+    bool auditd = __android_logger_property_get_bool("ro.logd.auditd", BOOL_DEFAULT_TRUE);
+    if (DropPrivs(klogd, auditd) != 0) {
+        return EXIT_FAILURE;
+    }
+
     // Reinit Thread
     sem_init(&reinit, 0, 0);
-    sem_init(&uidName, 0, 0);
-    sem_init(&sem_name, 0, 1);
     pthread_attr_t attr;
     if (!pthread_attr_init(&attr)) {
         struct sched_param param;
@@ -461,12 +357,6 @@
         pthread_attr_destroy(&attr);
     }
 
-    bool auditd =
-        __android_logger_property_get_bool("ro.logd.auditd", BOOL_DEFAULT_TRUE);
-    if (drop_privs(klogd, auditd) != 0) {
-        return EXIT_FAILURE;
-    }
-
     // Serves the purpose of managing the last logs times read on a
     // socket connection, and as a reader lock on a range of log
     // entries.
diff --git a/logd/tests/Android.bp b/logd/tests/Android.bp
index 83a194f..9a5defa 100644
--- a/logd/tests/Android.bp
+++ b/logd/tests/Android.bp
@@ -35,12 +35,12 @@
 
     srcs: ["logd_test.cpp"],
 
-    shared_libs: [
+    static_libs: [
         "libbase",
         "libcutils",
         "libselinux",
+        "liblog",
     ],
-    static_libs: ["liblog"],
 }
 
 // Build tests for the logger. Run with:
@@ -63,6 +63,6 @@
     },
     test_suites: [
         "cts",
-        "vts",
+        "vts10",
     ],
 }
diff --git a/logd/tests/AndroidTest.xml b/logd/tests/AndroidTest.xml
index 9a18edb..a25dc44 100644
--- a/logd/tests/AndroidTest.xml
+++ b/logd/tests/AndroidTest.xml
@@ -18,6 +18,7 @@
     <option name="config-descriptor:metadata" key="component" value="systems" />
     <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
     <option name="config-descriptor:metadata" key="parameter" value="multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
     <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
         <option name="cleanup" value="true" />
         <option name="push" value="CtsLogdTestCases->/data/local/tmp/CtsLogdTestCases" />
diff --git a/logd/tests/logd_test.cpp b/logd/tests/logd_test.cpp
index b6c33d7..10bac62 100644
--- a/logd/tests/logd_test.cpp
+++ b/logd/tests/logd_test.cpp
@@ -241,47 +241,18 @@
 static void caught_signal(int /* signum */) {
 }
 
-static void dump_log_msg(const char* prefix, log_msg* msg, unsigned int version,
-                         int lid) {
+static void dump_log_msg(const char* prefix, log_msg* msg, int lid) {
     std::cout << std::flush;
     std::cerr << std::flush;
     fflush(stdout);
     fflush(stderr);
-    switch (msg->entry.hdr_size) {
-        case 0:
-            version = 1;
-            break;
+    EXPECT_GE(msg->entry.hdr_size, sizeof(logger_entry));
 
-        case sizeof(msg->entry_v2): /* PLUS case sizeof(msg->entry_v3): */
-            if (version == 0) {
-                version = (msg->entry_v3.lid < LOG_ID_MAX) ? 3 : 2;
-            }
-            break;
-
-        case sizeof(msg->entry_v4):
-            if (version == 0) {
-                version = 4;
-            }
-            break;
-    }
-
-    fprintf(stderr, "%s: v%u[%u] ", prefix, version, msg->len());
-    if (version != 1) {
-        fprintf(stderr, "hdr_size=%u ", msg->entry.hdr_size);
-    }
-    fprintf(stderr, "pid=%u tid=%u %u.%09u ", msg->entry.pid, msg->entry.tid,
-            msg->entry.sec, msg->entry.nsec);
-    switch (version) {
-        case 1:
-            break;
-        case 2:
-            fprintf(stderr, "euid=%u ", msg->entry_v2.euid);
-            break;
-        case 3:
-        default:
-            lid = msg->entry.lid;
-            break;
-    }
+    fprintf(stderr, "%s: [%u] ", prefix, msg->len());
+    fprintf(stderr, "hdr_size=%u ", msg->entry.hdr_size);
+    fprintf(stderr, "pid=%u tid=%u %u.%09u ", msg->entry.pid, msg->entry.tid, msg->entry.sec,
+            msg->entry.nsec);
+    lid = msg->entry.lid;
 
     switch (lid) {
         case 0:
@@ -349,86 +320,6 @@
 }
 #endif
 
-TEST(logd, both) {
-#ifdef __ANDROID__
-    log_msg msg;
-
-    // check if we can read any logs from logd
-    bool user_logger_available = false;
-    bool user_logger_content = false;
-
-    int fd = socket_local_client("logdr", ANDROID_SOCKET_NAMESPACE_RESERVED,
-                                 SOCK_SEQPACKET);
-    if (fd >= 0) {
-        struct sigaction ignore, old_sigaction;
-        memset(&ignore, 0, sizeof(ignore));
-        ignore.sa_handler = caught_signal;
-        sigemptyset(&ignore.sa_mask);
-        sigaction(SIGALRM, &ignore, &old_sigaction);
-        unsigned int old_alarm = alarm(10);
-
-        static const char ask[] = "dumpAndClose lids=0,1,2,3";
-        user_logger_available = write(fd, ask, sizeof(ask)) == sizeof(ask);
-
-        user_logger_content = recv(fd, msg.buf, sizeof(msg), 0) > 0;
-
-        if (user_logger_content) {
-            dump_log_msg("user", &msg, 3, -1);
-        }
-
-        alarm(old_alarm);
-        sigaction(SIGALRM, &old_sigaction, nullptr);
-
-        close(fd);
-    }
-
-    // check if we can read any logs from kernel logger
-    bool kernel_logger_available = false;
-    bool kernel_logger_content = false;
-
-    static const char* loggers[] = {
-        "/dev/log/main",   "/dev/log_main",   "/dev/log/radio",
-        "/dev/log_radio",  "/dev/log/events", "/dev/log_events",
-        "/dev/log/system", "/dev/log_system",
-    };
-
-    for (unsigned int i = 0; i < arraysize(loggers); ++i) {
-        fd = open(loggers[i], O_RDONLY);
-        if (fd < 0) {
-            continue;
-        }
-        kernel_logger_available = true;
-        fcntl(fd, F_SETFL, O_RDONLY | O_NONBLOCK);
-        int result = TEMP_FAILURE_RETRY(read(fd, msg.buf, sizeof(msg)));
-        if (result > 0) {
-            kernel_logger_content = true;
-            dump_log_msg("kernel", &msg, 0, i / 2);
-        }
-        close(fd);
-    }
-
-    static const char yes[] = "\xE2\x9C\x93";
-    static const char no[] = "\xE2\x9c\x98";
-    fprintf(stderr,
-            "LOGGER  Available  Content\n"
-            "user    %-13s%s\n"
-            "kernel  %-13s%s\n"
-            " status %-11s%s\n",
-            (user_logger_available) ? yes : no, (user_logger_content) ? yes : no,
-            (kernel_logger_available) ? yes : no,
-            (kernel_logger_content) ? yes : no,
-            (user_logger_available && kernel_logger_available) ? "ERROR" : "ok",
-            (user_logger_content && kernel_logger_content) ? "ERROR" : "ok");
-
-    EXPECT_EQ(0, user_logger_available && kernel_logger_available);
-    EXPECT_EQ(0, !user_logger_available && !kernel_logger_available);
-    EXPECT_EQ(0, user_logger_content && kernel_logger_content);
-    EXPECT_EQ(0, !user_logger_content && !kernel_logger_content);
-#else
-    GTEST_LOG_(INFO) << "This test does nothing.\n";
-#endif
-}
-
 #ifdef __ANDROID__
 // BAD ROBOT
 //   Benchmark threshold are generally considered bad form unless there is
@@ -664,11 +555,11 @@
     }
 
     if (content_wrap) {
-        dump_log_msg("wrap", &msg_wrap, 3, -1);
+        dump_log_msg("wrap", &msg_wrap, -1);
     }
 
     if (content_timeout) {
-        dump_log_msg("timeout", &msg_timeout, 3, -1);
+        dump_log_msg("timeout", &msg_timeout, -1);
     }
 
     EXPECT_TRUE(written);
@@ -691,6 +582,7 @@
         "dumpAndClose lids=0,1,2,3,4,5 timeout=6 start=0.000000000");
 }
 
+#ifdef ENABLE_FLAKY_TESTS
 // b/26447386 refined behavior
 TEST(logd, timeout) {
 #ifdef __ANDROID__
@@ -801,11 +693,11 @@
     }
 
     if (content_wrap) {
-        dump_log_msg("wrap", &msg_wrap, 3, -1);
+        dump_log_msg("wrap", &msg_wrap, -1);
     }
 
     if (content_timeout) {
-        dump_log_msg("timeout", &msg_timeout, 3, -1);
+        dump_log_msg("timeout", &msg_timeout, -1);
     }
 
     if (content_wrap || !content_timeout) {
@@ -825,6 +717,7 @@
     GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif
 }
+#endif
 
 // b/27242723 confirmed fixed
 TEST(logd, SNDTIMEO) {
@@ -856,7 +749,7 @@
 
     EXPECT_TRUE(read_one);
     if (read_one) {
-        dump_log_msg("user", &msg, 3, -1);
+        dump_log_msg("user", &msg, -1);
     }
 
     fprintf(stderr, "Sleep for >%d seconds logd SO_SNDTIMEO ...\n", sndtimeo);
@@ -874,7 +767,7 @@
 
     EXPECT_EQ(0, recv_ret);
     if (recv_ret > 0) {
-        dump_log_msg("user", &msg, 3, -1);
+        dump_log_msg("user", &msg, -1);
     }
     EXPECT_EQ(0, save_errno);
 
diff --git a/logwrapper/Android.bp b/logwrapper/Android.bp
index c378646..8851a47 100644
--- a/logwrapper/Android.bp
+++ b/logwrapper/Android.bp
@@ -13,11 +13,12 @@
     name: "liblogwrap",
     defaults: ["logwrapper_defaults"],
     recovery_available: true,
-    srcs: ["logwrap.c"],
+    srcs: ["logwrap.cpp"],
     shared_libs: [
         "libcutils",
         "liblog",
     ],
+    header_libs: ["libbase_headers"],
     export_include_dirs: ["include"],
     local_include_dirs: ["include"],
 }
@@ -31,9 +32,10 @@
     defaults: ["logwrapper_defaults"],
     local_include_dirs: ["include"],
     srcs: [
-        "logwrap.c",
-        "logwrapper.c",
+        "logwrap.cpp",
+        "logwrapper.cpp",
     ],
+    header_libs: ["libbase_headers"],
     shared_libs: ["libcutils", "liblog"],
 }
 
@@ -54,10 +56,10 @@
 // ========================================================
 
 cc_benchmark {
-    name: "android_fork_execvp_ext_benchmark",
+    name: "logwrap_fork_execvp_benchmark",
     defaults: ["logwrapper_defaults"],
     srcs: [
-        "android_fork_execvp_ext_benchmark.cpp",
+        "logwrap_fork_execvp_benchmark.cpp",
     ],
     shared_libs: [
         "libbase",
diff --git a/logwrapper/android_fork_execvp_ext_benchmark.cpp b/logwrapper/android_fork_execvp_ext_benchmark.cpp
deleted file mode 100644
index 1abd932..0000000
--- a/logwrapper/android_fork_execvp_ext_benchmark.cpp
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "logwrap/logwrap.h"
-
-#include <android-base/logging.h>
-#include <benchmark/benchmark.h>
-
-static void BM_android_fork_execvp_ext(benchmark::State& state) {
-    const char* argv[] = {"/system/bin/echo", "hello", "world"};
-    const int argc = 3;
-    while (state.KeepRunning()) {
-        int rc = android_fork_execvp_ext(
-            argc, (char**)argv, NULL /* status */, false /* ignore_int_quit */, LOG_NONE,
-            false /* abbreviated */, NULL /* file_path */, NULL /* opts */, 0 /* opts_len */);
-        CHECK_EQ(0, rc);
-    }
-}
-BENCHMARK(BM_android_fork_execvp_ext);
-
-BENCHMARK_MAIN();
diff --git a/logwrapper/include/logwrap/logwrap.h b/logwrapper/include/logwrap/logwrap.h
index d3538b3..cb40ee2 100644
--- a/logwrapper/include/logwrap/logwrap.h
+++ b/logwrapper/include/logwrap/logwrap.h
@@ -15,23 +15,11 @@
  * limitations under the License.
  */
 
-#ifndef __LIBS_LOGWRAP_H
-#define __LIBS_LOGWRAP_H
-
-#include <stdbool.h>
-#include <stdint.h>
-
-__BEGIN_DECLS
+#pragma once
 
 /*
  * Run a command while logging its stdout and stderr
  *
- * WARNING: while this function is running it will clear all SIGCHLD handlers
- * if you rely on SIGCHLD in the caller there is a chance zombies will be
- * created if you're not calling waitpid after calling this. This function will
- * log a warning when it clears SIGCHLD for processes other than the child it
- * created.
- *
  * Arguments:
  *   argc:   the number of elements in argv
  *   argv:   an array of strings containing the command to be executed and its
@@ -40,10 +28,10 @@
  *   status: the equivalent child status as populated by wait(status). This
  *           value is only valid when logwrap successfully completes. If NULL
  *           the return value of the child will be the function's return value.
- *   ignore_int_quit: set to true if you want to completely ignore SIGINT and
- *           SIGQUIT while logwrap is running. This may force the end-user to
- *           send a signal twice to signal the caller (once for the child, and
- *           once for the caller)
+ *   forward_signals: set to true if you want to forward SIGINT, SIGQUIT, and
+ *           SIGHUP to the child process, while it is running.  You likely do
+ *           not need to use this; it is primarily for the logwrapper
+ *           executable itself.
  *   log_target: Specify where to log the output of the child, either LOG_NONE,
  *           LOG_ALOG (for the Android system log), LOG_KLOG (for the kernel
  *           log), or LOG_FILE (and you need to specify a pathname in the
@@ -54,8 +42,6 @@
  *           the specified log until the child has exited.
  *   file_path: if log_target has the LOG_FILE bit set, then this parameter
  *           must be set to the pathname of the file to log to.
- *   unused_opts: currently unused.
- *   unused_opts_len: currently unused.
  *
  * Return value:
  *   0 when logwrap successfully run the child process and captured its status
@@ -65,29 +51,11 @@
  *
  */
 
-/* Values for the log_target parameter android_fork_execvp_ext() */
+/* Values for the log_target parameter logwrap_fork_execvp() */
 #define LOG_NONE        0
 #define LOG_ALOG        1
 #define LOG_KLOG        2
 #define LOG_FILE        4
 
-// TODO: Remove unused_opts / unused_opts_len in a followup change.
-int android_fork_execvp_ext(int argc, char* argv[], int *status, bool ignore_int_quit,
-        int log_target, bool abbreviated, char *file_path, void* unused_opts,
-        int unused_opts_len);
-
-/* Similar to above, except abbreviated logging is not available, and if logwrap
- * is true, logging is to the Android system log, and if false, there is no
- * logging.
- */
-static inline int android_fork_execvp(int argc, char* argv[], int *status,
-                                     bool ignore_int_quit, bool logwrap)
-{
-    return android_fork_execvp_ext(argc, argv, status, ignore_int_quit,
-                                   (logwrap ? LOG_ALOG : LOG_NONE), false, NULL,
-                                   NULL, 0);
-}
-
-__END_DECLS
-
-#endif /* __LIBS_LOGWRAP_H */
+int logwrap_fork_execvp(int argc, const char* const* argv, int* status, bool forward_signals,
+                        int log_target, bool abbreviated, const char* file_path);
diff --git a/logwrapper/logwrap.c b/logwrapper/logwrap.c
deleted file mode 100644
index 8621993..0000000
--- a/logwrapper/logwrap.c
+++ /dev/null
@@ -1,568 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <libgen.h>
-#include <poll.h>
-#include <pthread.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <cutils/klog.h>
-#include <log/log.h>
-#include <logwrap/logwrap.h>
-
-#define ARRAY_SIZE(x)   (sizeof(x) / sizeof(*(x)))
-#define MIN(a,b) (((a)<(b))?(a):(b))
-
-static pthread_mutex_t fd_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-#define ERROR(fmt, args...)                                                   \
-do {                                                                          \
-    fprintf(stderr, fmt, ## args);                                            \
-    ALOG(LOG_ERROR, "logwrapper", fmt, ## args);                              \
-} while(0)
-
-#define FATAL_CHILD(fmt, args...)                                             \
-do {                                                                          \
-    ERROR(fmt, ## args);                                                      \
-    _exit(-1);                                                                \
-} while(0)
-
-#define MAX_KLOG_TAG 16
-
-/* This is a simple buffer that holds up to the first beginning_buf->buf_size
- * bytes of output from a command.
- */
-#define BEGINNING_BUF_SIZE 0x1000
-struct beginning_buf {
-    char *buf;
-    size_t alloc_len;
-    /* buf_size is the usable space, which is one less than the allocated size */
-    size_t buf_size;
-    size_t used_len;
-};
-
-/* This is a circular buf that holds up to the last ending_buf->buf_size bytes
- * of output from a command after the first beginning_buf->buf_size bytes
- * (which are held in beginning_buf above).
- */
-#define ENDING_BUF_SIZE 0x1000
-struct ending_buf {
-    char *buf;
-    ssize_t alloc_len;
-    /* buf_size is the usable space, which is one less than the allocated size */
-    ssize_t buf_size;
-    ssize_t used_len;
-    /* read and write offsets into the circular buffer */
-    int read;
-    int write;
-};
-
- /* A structure to hold all the abbreviated buf data */
-struct abbr_buf {
-    struct beginning_buf b_buf;
-    struct ending_buf e_buf;
-    int beginning_buf_full;
-};
-
-/* Collect all the various bits of info needed for logging in one place. */
-struct log_info {
-    int log_target;
-    char klog_fmt[MAX_KLOG_TAG * 2];
-    char *btag;
-    bool abbreviated;
-    FILE *fp;
-    struct abbr_buf a_buf;
-};
-
-/* Forware declaration */
-static void add_line_to_abbr_buf(struct abbr_buf *a_buf, char *linebuf, int linelen);
-
-/* Return 0 on success, and 1 when full */
-static int add_line_to_linear_buf(struct beginning_buf *b_buf,
-                                   char *line, ssize_t line_len)
-{
-    int full = 0;
-
-    if ((line_len + b_buf->used_len) > b_buf->buf_size) {
-        full = 1;
-    } else {
-        /* Add to the end of the buf */
-        memcpy(b_buf->buf + b_buf->used_len, line, line_len);
-        b_buf->used_len += line_len;
-    }
-
-    return full;
-}
-
-static void add_line_to_circular_buf(struct ending_buf *e_buf,
-                                     char *line, ssize_t line_len)
-{
-    ssize_t free_len;
-    ssize_t needed_space;
-    int cnt;
-
-    if (e_buf->buf == NULL) {
-        return;
-    }
-
-   if (line_len > e_buf->buf_size) {
-       return;
-   }
-
-    free_len = e_buf->buf_size - e_buf->used_len;
-
-    if (line_len > free_len) {
-        /* remove oldest entries at read, and move read to make
-         * room for the new string */
-        needed_space = line_len - free_len;
-        e_buf->read = (e_buf->read + needed_space) % e_buf->buf_size;
-        e_buf->used_len -= needed_space;
-    }
-
-    /* Copy the line into the circular buffer, dealing with possible
-     * wraparound.
-     */
-    cnt = MIN(line_len, e_buf->buf_size - e_buf->write);
-    memcpy(e_buf->buf + e_buf->write, line, cnt);
-    if (cnt < line_len) {
-        memcpy(e_buf->buf, line + cnt, line_len - cnt);
-    }
-    e_buf->used_len += line_len;
-    e_buf->write = (e_buf->write + line_len) % e_buf->buf_size;
-}
-
-/* Log directly to the specified log */
-static void do_log_line(struct log_info *log_info, char *line) {
-    if (log_info->log_target & LOG_KLOG) {
-        klog_write(6, log_info->klog_fmt, line);
-    }
-    if (log_info->log_target & LOG_ALOG) {
-        ALOG(LOG_INFO, log_info->btag, "%s", line);
-    }
-    if (log_info->log_target & LOG_FILE) {
-        fprintf(log_info->fp, "%s\n", line);
-    }
-}
-
-/* Log to either the abbreviated buf, or directly to the specified log
- * via do_log_line() above.
- */
-static void log_line(struct log_info *log_info, char *line, int len) {
-    if (log_info->abbreviated) {
-        add_line_to_abbr_buf(&log_info->a_buf, line, len);
-    } else {
-        do_log_line(log_info, line);
-    }
-}
-
-/*
- * The kernel will take a maximum of 1024 bytes in any single write to
- * the kernel logging device file, so find and print each line one at
- * a time.  The allocated size for buf should be at least 1 byte larger
- * than buf_size (the usable size of the buffer) to make sure there is
- * room to temporarily stuff a null byte to terminate a line for logging.
- */
-static void print_buf_lines(struct log_info *log_info, char *buf, int buf_size)
-{
-    char *line_start;
-    char c;
-    int i;
-
-    line_start = buf;
-    for (i = 0; i < buf_size; i++) {
-        if (*(buf + i) == '\n') {
-            /* Found a line ending, print the line and compute new line_start */
-            /* Save the next char and replace with \0 */
-            c = *(buf + i + 1);
-            *(buf + i + 1) = '\0';
-            do_log_line(log_info, line_start);
-            /* Restore the saved char */
-            *(buf + i + 1) = c;
-            line_start = buf + i + 1;
-        } else if (*(buf + i) == '\0') {
-            /* The end of the buffer, print the last bit */
-            do_log_line(log_info, line_start);
-            break;
-        }
-    }
-    /* If the buffer was completely full, and didn't end with a newline, just
-     * ignore the partial last line.
-     */
-}
-
-static void init_abbr_buf(struct abbr_buf *a_buf) {
-    char *new_buf;
-
-    memset(a_buf, 0, sizeof(struct abbr_buf));
-    new_buf = malloc(BEGINNING_BUF_SIZE);
-    if (new_buf) {
-        a_buf->b_buf.buf = new_buf;
-        a_buf->b_buf.alloc_len = BEGINNING_BUF_SIZE;
-        a_buf->b_buf.buf_size = BEGINNING_BUF_SIZE - 1;
-    }
-    new_buf = malloc(ENDING_BUF_SIZE);
-    if (new_buf) {
-        a_buf->e_buf.buf = new_buf;
-        a_buf->e_buf.alloc_len = ENDING_BUF_SIZE;
-        a_buf->e_buf.buf_size = ENDING_BUF_SIZE - 1;
-    }
-}
-
-static void free_abbr_buf(struct abbr_buf *a_buf) {
-    free(a_buf->b_buf.buf);
-    free(a_buf->e_buf.buf);
-}
-
-static void add_line_to_abbr_buf(struct abbr_buf *a_buf, char *linebuf, int linelen) {
-    if (!a_buf->beginning_buf_full) {
-        a_buf->beginning_buf_full =
-            add_line_to_linear_buf(&a_buf->b_buf, linebuf, linelen);
-    }
-    if (a_buf->beginning_buf_full) {
-        add_line_to_circular_buf(&a_buf->e_buf, linebuf, linelen);
-    }
-}
-
-static void print_abbr_buf(struct log_info *log_info) {
-    struct abbr_buf *a_buf = &log_info->a_buf;
-
-    /* Add the abbreviated output to the kernel log */
-    if (a_buf->b_buf.alloc_len) {
-        print_buf_lines(log_info, a_buf->b_buf.buf, a_buf->b_buf.used_len);
-    }
-
-    /* Print an ellipsis to indicate that the buffer has wrapped or
-     * is full, and some data was not logged.
-     */
-    if (a_buf->e_buf.used_len == a_buf->e_buf.buf_size) {
-        do_log_line(log_info, "...\n");
-    }
-
-    if (a_buf->e_buf.used_len == 0) {
-        return;
-    }
-
-    /* Simplest way to print the circular buffer is allocate a second buf
-     * of the same size, and memcpy it so it's a simple linear buffer,
-     * and then cal print_buf_lines on it */
-    if (a_buf->e_buf.read < a_buf->e_buf.write) {
-        /* no wrap around, just print it */
-        print_buf_lines(log_info, a_buf->e_buf.buf + a_buf->e_buf.read,
-                        a_buf->e_buf.used_len);
-    } else {
-        /* The circular buffer will always have at least 1 byte unused,
-         * so by allocating alloc_len here we will have at least
-         * 1 byte of space available as required by print_buf_lines().
-         */
-        char * nbuf = malloc(a_buf->e_buf.alloc_len);
-        if (!nbuf) {
-            return;
-        }
-        int first_chunk_len = a_buf->e_buf.buf_size - a_buf->e_buf.read;
-        memcpy(nbuf, a_buf->e_buf.buf + a_buf->e_buf.read, first_chunk_len);
-        /* copy second chunk */
-        memcpy(nbuf + first_chunk_len, a_buf->e_buf.buf, a_buf->e_buf.write);
-        print_buf_lines(log_info, nbuf, first_chunk_len + a_buf->e_buf.write);
-        free(nbuf);
-    }
-}
-
-static int parent(const char *tag, int parent_read, pid_t pid,
-        int *chld_sts, int log_target, bool abbreviated, char *file_path) {
-    int status = 0;
-    char buffer[4096];
-    struct pollfd poll_fds[] = {
-        [0] = {
-            .fd = parent_read,
-            .events = POLLIN,
-        },
-    };
-    int rc = 0;
-    int fd;
-
-    struct log_info log_info;
-
-    int a = 0;  // start index of unprocessed data
-    int b = 0;  // end index of unprocessed data
-    int sz;
-    bool found_child = false;
-    char tmpbuf[256];
-
-    log_info.btag = basename(tag);
-    if (!log_info.btag) {
-        log_info.btag = (char*) tag;
-    }
-
-    if (abbreviated && (log_target == LOG_NONE)) {
-        abbreviated = 0;
-    }
-    if (abbreviated) {
-        init_abbr_buf(&log_info.a_buf);
-    }
-
-    if (log_target & LOG_KLOG) {
-        snprintf(log_info.klog_fmt, sizeof(log_info.klog_fmt),
-                 "<6>%.*s: %%s\n", MAX_KLOG_TAG, log_info.btag);
-    }
-
-    if ((log_target & LOG_FILE) && !file_path) {
-        /* No file_path specified, clear the LOG_FILE bit */
-        log_target &= ~LOG_FILE;
-    }
-
-    if (log_target & LOG_FILE) {
-        fd = open(file_path, O_WRONLY | O_CREAT, 0664);
-        if (fd < 0) {
-            ERROR("Cannot log to file %s\n", file_path);
-            log_target &= ~LOG_FILE;
-        } else {
-            lseek(fd, 0, SEEK_END);
-            log_info.fp = fdopen(fd, "a");
-        }
-    }
-
-    log_info.log_target = log_target;
-    log_info.abbreviated = abbreviated;
-
-    while (!found_child) {
-        if (TEMP_FAILURE_RETRY(poll(poll_fds, ARRAY_SIZE(poll_fds), -1)) < 0) {
-            ERROR("poll failed\n");
-            rc = -1;
-            goto err_poll;
-        }
-
-        if (poll_fds[0].revents & POLLIN) {
-            sz = TEMP_FAILURE_RETRY(
-                read(parent_read, &buffer[b], sizeof(buffer) - 1 - b));
-
-            sz += b;
-            // Log one line at a time
-            for (b = 0; b < sz; b++) {
-                if (buffer[b] == '\r') {
-                    if (abbreviated) {
-                        /* The abbreviated logging code uses newline as
-                         * the line separator.  Lucikly, the pty layer
-                         * helpfully cooks the output of the command
-                         * being run and inserts a CR before NL.  So
-                         * I just change it to NL here when doing
-                         * abbreviated logging.
-                         */
-                        buffer[b] = '\n';
-                    } else {
-                        buffer[b] = '\0';
-                    }
-                } else if (buffer[b] == '\n') {
-                    buffer[b] = '\0';
-                    log_line(&log_info, &buffer[a], b - a);
-                    a = b + 1;
-                }
-            }
-
-            if (a == 0 && b == sizeof(buffer) - 1) {
-                // buffer is full, flush
-                buffer[b] = '\0';
-                log_line(&log_info, &buffer[a], b - a);
-                b = 0;
-            } else if (a != b) {
-                // Keep left-overs
-                b -= a;
-                memmove(buffer, &buffer[a], b);
-                a = 0;
-            } else {
-                a = 0;
-                b = 0;
-            }
-        }
-
-        if (poll_fds[0].revents & POLLHUP) {
-            int ret;
-
-            ret = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0));
-            if (ret < 0) {
-                rc = errno;
-                ALOG(LOG_ERROR, "logwrap", "waitpid failed with %s\n", strerror(errno));
-                goto err_waitpid;
-            }
-            if (ret > 0) {
-                found_child = true;
-            }
-        }
-    }
-
-    if (chld_sts != NULL) {
-        *chld_sts = status;
-    } else {
-      if (WIFEXITED(status))
-        rc = WEXITSTATUS(status);
-      else
-        rc = -ECHILD;
-    }
-
-    // Flush remaining data
-    if (a != b) {
-      buffer[b] = '\0';
-      log_line(&log_info, &buffer[a], b - a);
-    }
-
-    /* All the output has been processed, time to dump the abbreviated output */
-    if (abbreviated) {
-        print_abbr_buf(&log_info);
-    }
-
-    if (WIFEXITED(status)) {
-      if (WEXITSTATUS(status)) {
-        snprintf(tmpbuf, sizeof(tmpbuf),
-                 "%s terminated by exit(%d)\n", log_info.btag, WEXITSTATUS(status));
-        do_log_line(&log_info, tmpbuf);
-      }
-    } else {
-      if (WIFSIGNALED(status)) {
-        snprintf(tmpbuf, sizeof(tmpbuf),
-                       "%s terminated by signal %d\n", log_info.btag, WTERMSIG(status));
-        do_log_line(&log_info, tmpbuf);
-      } else if (WIFSTOPPED(status)) {
-        snprintf(tmpbuf, sizeof(tmpbuf),
-                       "%s stopped by signal %d\n", log_info.btag, WSTOPSIG(status));
-        do_log_line(&log_info, tmpbuf);
-      }
-    }
-
-err_waitpid:
-err_poll:
-    if (log_target & LOG_FILE) {
-        fclose(log_info.fp); /* Also closes underlying fd */
-    }
-    if (abbreviated) {
-        free_abbr_buf(&log_info.a_buf);
-    }
-    return rc;
-}
-
-static void child(int argc, char* argv[]) {
-    // create null terminated argv_child array
-    char* argv_child[argc + 1];
-    memcpy(argv_child, argv, argc * sizeof(char *));
-    argv_child[argc] = NULL;
-
-    if (execvp(argv_child[0], argv_child)) {
-        FATAL_CHILD("executing %s failed: %s\n", argv_child[0],
-                strerror(errno));
-    }
-}
-
-int android_fork_execvp_ext(int argc, char* argv[], int *status, bool ignore_int_quit,
-        int log_target, bool abbreviated, char *file_path,
-        void *unused_opts, int unused_opts_len) {
-    pid_t pid;
-    int parent_ptty;
-    int child_ptty;
-    struct sigaction intact;
-    struct sigaction quitact;
-    sigset_t blockset;
-    sigset_t oldset;
-    int rc = 0;
-
-    LOG_ALWAYS_FATAL_IF(unused_opts != NULL);
-    LOG_ALWAYS_FATAL_IF(unused_opts_len != 0);
-
-    rc = pthread_mutex_lock(&fd_mutex);
-    if (rc) {
-        ERROR("failed to lock signal_fd mutex\n");
-        goto err_lock;
-    }
-
-    /* Use ptty instead of socketpair so that STDOUT is not buffered */
-    parent_ptty = TEMP_FAILURE_RETRY(open("/dev/ptmx", O_RDWR));
-    if (parent_ptty < 0) {
-        ERROR("Cannot create parent ptty\n");
-        rc = -1;
-        goto err_open;
-    }
-
-    char child_devname[64];
-    if (grantpt(parent_ptty) || unlockpt(parent_ptty) ||
-            ptsname_r(parent_ptty, child_devname, sizeof(child_devname)) != 0) {
-        ERROR("Problem with /dev/ptmx\n");
-        rc = -1;
-        goto err_ptty;
-    }
-
-    child_ptty = TEMP_FAILURE_RETRY(open(child_devname, O_RDWR));
-    if (child_ptty < 0) {
-        ERROR("Cannot open child_ptty\n");
-        rc = -1;
-        goto err_child_ptty;
-    }
-
-    sigemptyset(&blockset);
-    sigaddset(&blockset, SIGINT);
-    sigaddset(&blockset, SIGQUIT);
-    pthread_sigmask(SIG_BLOCK, &blockset, &oldset);
-
-    pid = fork();
-    if (pid < 0) {
-        close(child_ptty);
-        ERROR("Failed to fork\n");
-        rc = -1;
-        goto err_fork;
-    } else if (pid == 0) {
-        pthread_mutex_unlock(&fd_mutex);
-        pthread_sigmask(SIG_SETMASK, &oldset, NULL);
-        close(parent_ptty);
-
-        dup2(child_ptty, 1);
-        dup2(child_ptty, 2);
-        close(child_ptty);
-
-        child(argc, argv);
-    } else {
-        close(child_ptty);
-        if (ignore_int_quit) {
-            struct sigaction ignact;
-
-            memset(&ignact, 0, sizeof(ignact));
-            ignact.sa_handler = SIG_IGN;
-            sigaction(SIGINT, &ignact, &intact);
-            sigaction(SIGQUIT, &ignact, &quitact);
-        }
-
-        rc = parent(argv[0], parent_ptty, pid, status, log_target,
-                    abbreviated, file_path);
-    }
-
-    if (ignore_int_quit) {
-        sigaction(SIGINT, &intact, NULL);
-        sigaction(SIGQUIT, &quitact, NULL);
-    }
-err_fork:
-    pthread_sigmask(SIG_SETMASK, &oldset, NULL);
-err_child_ptty:
-err_ptty:
-    close(parent_ptty);
-err_open:
-    pthread_mutex_unlock(&fd_mutex);
-err_lock:
-    return rc;
-}
diff --git a/logwrapper/logwrap.cpp b/logwrapper/logwrap.cpp
new file mode 100644
index 0000000..5a518bc
--- /dev/null
+++ b/logwrapper/logwrap.cpp
@@ -0,0 +1,615 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <poll.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <algorithm>
+
+#include <android-base/macros.h>
+#include <cutils/klog.h>
+#include <log/log.h>
+#include <logwrap/logwrap.h>
+
+static pthread_mutex_t fd_mutex = PTHREAD_MUTEX_INITIALIZER;
+// Protected by fd_mutex.  These signals must be blocked while modifying as well.
+static pid_t child_pid;
+static struct sigaction old_int;
+static struct sigaction old_quit;
+static struct sigaction old_hup;
+
+#define ERROR(fmt, args...)                         \
+    do {                                            \
+        fprintf(stderr, fmt, ##args);               \
+        ALOG(LOG_ERROR, "logwrapper", fmt, ##args); \
+    } while (0)
+
+#define FATAL_CHILD(fmt, args...) \
+    do {                          \
+        ERROR(fmt, ##args);       \
+        _exit(-1);                \
+    } while (0)
+
+#define MAX_KLOG_TAG 16
+
+/* This is a simple buffer that holds up to the first beginning_buf->buf_size
+ * bytes of output from a command.
+ */
+#define BEGINNING_BUF_SIZE 0x1000
+struct beginning_buf {
+    char* buf;
+    size_t alloc_len;
+    /* buf_size is the usable space, which is one less than the allocated size */
+    size_t buf_size;
+    size_t used_len;
+};
+
+/* This is a circular buf that holds up to the last ending_buf->buf_size bytes
+ * of output from a command after the first beginning_buf->buf_size bytes
+ * (which are held in beginning_buf above).
+ */
+#define ENDING_BUF_SIZE 0x1000
+struct ending_buf {
+    char* buf;
+    ssize_t alloc_len;
+    /* buf_size is the usable space, which is one less than the allocated size */
+    ssize_t buf_size;
+    ssize_t used_len;
+    /* read and write offsets into the circular buffer */
+    int read;
+    int write;
+};
+
+/* A structure to hold all the abbreviated buf data */
+struct abbr_buf {
+    struct beginning_buf b_buf;
+    struct ending_buf e_buf;
+    int beginning_buf_full;
+};
+
+/* Collect all the various bits of info needed for logging in one place. */
+struct log_info {
+    int log_target;
+    char klog_fmt[MAX_KLOG_TAG * 2];
+    const char* btag;
+    bool abbreviated;
+    FILE* fp;
+    struct abbr_buf a_buf;
+};
+
+/* Forware declaration */
+static void add_line_to_abbr_buf(struct abbr_buf* a_buf, char* linebuf, int linelen);
+
+/* Return 0 on success, and 1 when full */
+static int add_line_to_linear_buf(struct beginning_buf* b_buf, char* line, ssize_t line_len) {
+    int full = 0;
+
+    if ((line_len + b_buf->used_len) > b_buf->buf_size) {
+        full = 1;
+    } else {
+        /* Add to the end of the buf */
+        memcpy(b_buf->buf + b_buf->used_len, line, line_len);
+        b_buf->used_len += line_len;
+    }
+
+    return full;
+}
+
+static void add_line_to_circular_buf(struct ending_buf* e_buf, char* line, ssize_t line_len) {
+    ssize_t free_len;
+    ssize_t needed_space;
+    int cnt;
+
+    if (e_buf->buf == nullptr) {
+        return;
+    }
+
+    if (line_len > e_buf->buf_size) {
+        return;
+    }
+
+    free_len = e_buf->buf_size - e_buf->used_len;
+
+    if (line_len > free_len) {
+        /* remove oldest entries at read, and move read to make
+         * room for the new string */
+        needed_space = line_len - free_len;
+        e_buf->read = (e_buf->read + needed_space) % e_buf->buf_size;
+        e_buf->used_len -= needed_space;
+    }
+
+    /* Copy the line into the circular buffer, dealing with possible
+     * wraparound.
+     */
+    cnt = std::min(line_len, e_buf->buf_size - e_buf->write);
+    memcpy(e_buf->buf + e_buf->write, line, cnt);
+    if (cnt < line_len) {
+        memcpy(e_buf->buf, line + cnt, line_len - cnt);
+    }
+    e_buf->used_len += line_len;
+    e_buf->write = (e_buf->write + line_len) % e_buf->buf_size;
+}
+
+/* Log directly to the specified log */
+static void do_log_line(struct log_info* log_info, const char* line) {
+    if (log_info->log_target & LOG_KLOG) {
+        klog_write(6, log_info->klog_fmt, line);
+    }
+    if (log_info->log_target & LOG_ALOG) {
+        ALOG(LOG_INFO, log_info->btag, "%s", line);
+    }
+    if (log_info->log_target & LOG_FILE) {
+        fprintf(log_info->fp, "%s\n", line);
+    }
+}
+
+/* Log to either the abbreviated buf, or directly to the specified log
+ * via do_log_line() above.
+ */
+static void log_line(struct log_info* log_info, char* line, int len) {
+    if (log_info->abbreviated) {
+        add_line_to_abbr_buf(&log_info->a_buf, line, len);
+    } else {
+        do_log_line(log_info, line);
+    }
+}
+
+/*
+ * The kernel will take a maximum of 1024 bytes in any single write to
+ * the kernel logging device file, so find and print each line one at
+ * a time.  The allocated size for buf should be at least 1 byte larger
+ * than buf_size (the usable size of the buffer) to make sure there is
+ * room to temporarily stuff a null byte to terminate a line for logging.
+ */
+static void print_buf_lines(struct log_info* log_info, char* buf, int buf_size) {
+    char* line_start;
+    char c;
+    int i;
+
+    line_start = buf;
+    for (i = 0; i < buf_size; i++) {
+        if (*(buf + i) == '\n') {
+            /* Found a line ending, print the line and compute new line_start */
+            /* Save the next char and replace with \0 */
+            c = *(buf + i + 1);
+            *(buf + i + 1) = '\0';
+            do_log_line(log_info, line_start);
+            /* Restore the saved char */
+            *(buf + i + 1) = c;
+            line_start = buf + i + 1;
+        } else if (*(buf + i) == '\0') {
+            /* The end of the buffer, print the last bit */
+            do_log_line(log_info, line_start);
+            break;
+        }
+    }
+    /* If the buffer was completely full, and didn't end with a newline, just
+     * ignore the partial last line.
+     */
+}
+
+static void init_abbr_buf(struct abbr_buf* a_buf) {
+    char* new_buf;
+
+    memset(a_buf, 0, sizeof(struct abbr_buf));
+    new_buf = static_cast<char*>(malloc(BEGINNING_BUF_SIZE));
+    if (new_buf) {
+        a_buf->b_buf.buf = new_buf;
+        a_buf->b_buf.alloc_len = BEGINNING_BUF_SIZE;
+        a_buf->b_buf.buf_size = BEGINNING_BUF_SIZE - 1;
+    }
+    new_buf = static_cast<char*>(malloc(ENDING_BUF_SIZE));
+    if (new_buf) {
+        a_buf->e_buf.buf = new_buf;
+        a_buf->e_buf.alloc_len = ENDING_BUF_SIZE;
+        a_buf->e_buf.buf_size = ENDING_BUF_SIZE - 1;
+    }
+}
+
+static void free_abbr_buf(struct abbr_buf* a_buf) {
+    free(a_buf->b_buf.buf);
+    free(a_buf->e_buf.buf);
+}
+
+static void add_line_to_abbr_buf(struct abbr_buf* a_buf, char* linebuf, int linelen) {
+    if (!a_buf->beginning_buf_full) {
+        a_buf->beginning_buf_full = add_line_to_linear_buf(&a_buf->b_buf, linebuf, linelen);
+    }
+    if (a_buf->beginning_buf_full) {
+        add_line_to_circular_buf(&a_buf->e_buf, linebuf, linelen);
+    }
+}
+
+static void print_abbr_buf(struct log_info* log_info) {
+    struct abbr_buf* a_buf = &log_info->a_buf;
+
+    /* Add the abbreviated output to the kernel log */
+    if (a_buf->b_buf.alloc_len) {
+        print_buf_lines(log_info, a_buf->b_buf.buf, a_buf->b_buf.used_len);
+    }
+
+    /* Print an ellipsis to indicate that the buffer has wrapped or
+     * is full, and some data was not logged.
+     */
+    if (a_buf->e_buf.used_len == a_buf->e_buf.buf_size) {
+        do_log_line(log_info, "...\n");
+    }
+
+    if (a_buf->e_buf.used_len == 0) {
+        return;
+    }
+
+    /* Simplest way to print the circular buffer is allocate a second buf
+     * of the same size, and memcpy it so it's a simple linear buffer,
+     * and then cal print_buf_lines on it */
+    if (a_buf->e_buf.read < a_buf->e_buf.write) {
+        /* no wrap around, just print it */
+        print_buf_lines(log_info, a_buf->e_buf.buf + a_buf->e_buf.read, a_buf->e_buf.used_len);
+    } else {
+        /* The circular buffer will always have at least 1 byte unused,
+         * so by allocating alloc_len here we will have at least
+         * 1 byte of space available as required by print_buf_lines().
+         */
+        char* nbuf = static_cast<char*>(malloc(a_buf->e_buf.alloc_len));
+        if (!nbuf) {
+            return;
+        }
+        int first_chunk_len = a_buf->e_buf.buf_size - a_buf->e_buf.read;
+        memcpy(nbuf, a_buf->e_buf.buf + a_buf->e_buf.read, first_chunk_len);
+        /* copy second chunk */
+        memcpy(nbuf + first_chunk_len, a_buf->e_buf.buf, a_buf->e_buf.write);
+        print_buf_lines(log_info, nbuf, first_chunk_len + a_buf->e_buf.write);
+        free(nbuf);
+    }
+}
+
+static void signal_handler(int signal_num);
+
+static void block_signals(sigset_t* oldset) {
+    sigset_t blockset;
+
+    sigemptyset(&blockset);
+    sigaddset(&blockset, SIGINT);
+    sigaddset(&blockset, SIGQUIT);
+    sigaddset(&blockset, SIGHUP);
+    pthread_sigmask(SIG_BLOCK, &blockset, oldset);
+}
+
+static void unblock_signals(sigset_t* oldset) {
+    pthread_sigmask(SIG_SETMASK, oldset, nullptr);
+}
+
+static void setup_signal_handlers(pid_t pid) {
+    struct sigaction handler = {.sa_handler = signal_handler};
+
+    child_pid = pid;
+    sigaction(SIGINT, &handler, &old_int);
+    sigaction(SIGQUIT, &handler, &old_quit);
+    sigaction(SIGHUP, &handler, &old_hup);
+}
+
+static void restore_signal_handlers() {
+    sigaction(SIGINT, &old_int, nullptr);
+    sigaction(SIGQUIT, &old_quit, nullptr);
+    sigaction(SIGHUP, &old_hup, nullptr);
+    child_pid = 0;
+}
+
+static void signal_handler(int signal_num) {
+    if (child_pid == 0 || kill(child_pid, signal_num) != 0) {
+        restore_signal_handlers();
+        raise(signal_num);
+    }
+}
+
+static int parent(const char* tag, int parent_read, pid_t pid, int* chld_sts, int log_target,
+                  bool abbreviated, const char* file_path, bool forward_signals) {
+    int status = 0;
+    char buffer[4096];
+    struct pollfd poll_fds[] = {
+            {
+                    .fd = parent_read,
+                    .events = POLLIN,
+            },
+    };
+    int rc = 0;
+    int fd;
+
+    struct log_info log_info;
+
+    int a = 0;  // start index of unprocessed data
+    int b = 0;  // end index of unprocessed data
+    int sz;
+    bool found_child = false;
+    // There is a very small chance that opening child_ptty in the child will fail, but in this case
+    // POLLHUP will not be generated below.  Therefore, we use a 1 second timeout for poll() until
+    // we receive a message from child_ptty.  If this times out, we call waitpid() with WNOHANG to
+    // check the status of the child process and exit appropriately if it has terminated.
+    bool received_messages = false;
+    char tmpbuf[256];
+
+    log_info.btag = basename(tag);
+    if (!log_info.btag) {
+        log_info.btag = tag;
+    }
+
+    if (abbreviated && (log_target == LOG_NONE)) {
+        abbreviated = 0;
+    }
+    if (abbreviated) {
+        init_abbr_buf(&log_info.a_buf);
+    }
+
+    if (log_target & LOG_KLOG) {
+        snprintf(log_info.klog_fmt, sizeof(log_info.klog_fmt), "<6>%.*s: %%s\n", MAX_KLOG_TAG,
+                 log_info.btag);
+    }
+
+    if ((log_target & LOG_FILE) && !file_path) {
+        /* No file_path specified, clear the LOG_FILE bit */
+        log_target &= ~LOG_FILE;
+    }
+
+    if (log_target & LOG_FILE) {
+        fd = open(file_path, O_WRONLY | O_CREAT | O_CLOEXEC, 0664);
+        if (fd < 0) {
+            ERROR("Cannot log to file %s\n", file_path);
+            log_target &= ~LOG_FILE;
+        } else {
+            lseek(fd, 0, SEEK_END);
+            log_info.fp = fdopen(fd, "a");
+        }
+    }
+
+    log_info.log_target = log_target;
+    log_info.abbreviated = abbreviated;
+
+    while (!found_child) {
+        int timeout = received_messages ? -1 : 1000;
+        if (TEMP_FAILURE_RETRY(poll(poll_fds, arraysize(poll_fds), timeout)) < 0) {
+            ERROR("poll failed\n");
+            rc = -1;
+            goto err_poll;
+        }
+
+        if (poll_fds[0].revents & POLLIN) {
+            received_messages = true;
+            sz = TEMP_FAILURE_RETRY(read(parent_read, &buffer[b], sizeof(buffer) - 1 - b));
+
+            sz += b;
+            // Log one line at a time
+            for (b = 0; b < sz; b++) {
+                if (buffer[b] == '\r') {
+                    if (abbreviated) {
+                        /* The abbreviated logging code uses newline as
+                         * the line separator.  Lucikly, the pty layer
+                         * helpfully cooks the output of the command
+                         * being run and inserts a CR before NL.  So
+                         * I just change it to NL here when doing
+                         * abbreviated logging.
+                         */
+                        buffer[b] = '\n';
+                    } else {
+                        buffer[b] = '\0';
+                    }
+                } else if (buffer[b] == '\n') {
+                    buffer[b] = '\0';
+                    log_line(&log_info, &buffer[a], b - a);
+                    a = b + 1;
+                }
+            }
+
+            if (a == 0 && b == sizeof(buffer) - 1) {
+                // buffer is full, flush
+                buffer[b] = '\0';
+                log_line(&log_info, &buffer[a], b - a);
+                b = 0;
+            } else if (a != b) {
+                // Keep left-overs
+                b -= a;
+                memmove(buffer, &buffer[a], b);
+                a = 0;
+            } else {
+                a = 0;
+                b = 0;
+            }
+        }
+
+        if (!received_messages || (poll_fds[0].revents & POLLHUP)) {
+            int ret;
+            sigset_t oldset;
+
+            if (forward_signals) {
+                // Our signal handlers forward these signals to 'child_pid', but waitpid() may reap
+                // the child, so we must block these signals until we either 1) conclude that the
+                // child is still running or 2) determine the child has been reaped and we have
+                // reset the signals to their original disposition.
+                block_signals(&oldset);
+            }
+
+            int flags = (poll_fds[0].revents & POLLHUP) ? 0 : WNOHANG;
+            ret = TEMP_FAILURE_RETRY(waitpid(pid, &status, flags));
+            if (ret < 0) {
+                rc = errno;
+                ALOG(LOG_ERROR, "logwrap", "waitpid failed with %s\n", strerror(errno));
+                goto err_waitpid;
+            }
+            if (ret > 0) {
+                found_child = true;
+            }
+
+            if (forward_signals) {
+                if (found_child) {
+                    restore_signal_handlers();
+                }
+                unblock_signals(&oldset);
+            }
+        }
+    }
+
+    if (chld_sts != nullptr) {
+        *chld_sts = status;
+    } else {
+        if (WIFEXITED(status))
+            rc = WEXITSTATUS(status);
+        else
+            rc = -ECHILD;
+    }
+
+    // Flush remaining data
+    if (a != b) {
+        buffer[b] = '\0';
+        log_line(&log_info, &buffer[a], b - a);
+    }
+
+    /* All the output has been processed, time to dump the abbreviated output */
+    if (abbreviated) {
+        print_abbr_buf(&log_info);
+    }
+
+    if (WIFEXITED(status)) {
+        if (WEXITSTATUS(status)) {
+            snprintf(tmpbuf, sizeof(tmpbuf), "%s terminated by exit(%d)\n", log_info.btag,
+                     WEXITSTATUS(status));
+            do_log_line(&log_info, tmpbuf);
+        }
+    } else {
+        if (WIFSIGNALED(status)) {
+            snprintf(tmpbuf, sizeof(tmpbuf), "%s terminated by signal %d\n", log_info.btag,
+                     WTERMSIG(status));
+            do_log_line(&log_info, tmpbuf);
+        } else if (WIFSTOPPED(status)) {
+            snprintf(tmpbuf, sizeof(tmpbuf), "%s stopped by signal %d\n", log_info.btag,
+                     WSTOPSIG(status));
+            do_log_line(&log_info, tmpbuf);
+        }
+    }
+
+err_waitpid:
+err_poll:
+    if (log_target & LOG_FILE) {
+        fclose(log_info.fp); /* Also closes underlying fd */
+    }
+    if (abbreviated) {
+        free_abbr_buf(&log_info.a_buf);
+    }
+    return rc;
+}
+
+static void child(int argc, const char* const* argv) {
+    // create null terminated argv_child array
+    char* argv_child[argc + 1];
+    memcpy(argv_child, argv, argc * sizeof(char*));
+    argv_child[argc] = nullptr;
+
+    if (execvp(argv_child[0], argv_child)) {
+        FATAL_CHILD("executing %s failed: %s\n", argv_child[0], strerror(errno));
+    }
+}
+
+int logwrap_fork_execvp(int argc, const char* const* argv, int* status, bool forward_signals,
+                        int log_target, bool abbreviated, const char* file_path) {
+    pid_t pid;
+    int parent_ptty;
+    sigset_t oldset;
+    int rc = 0;
+
+    rc = pthread_mutex_lock(&fd_mutex);
+    if (rc) {
+        ERROR("failed to lock signal_fd mutex\n");
+        goto err_lock;
+    }
+
+    /* Use ptty instead of socketpair so that STDOUT is not buffered */
+    parent_ptty = TEMP_FAILURE_RETRY(posix_openpt(O_RDWR | O_CLOEXEC));
+    if (parent_ptty < 0) {
+        ERROR("Cannot create parent ptty\n");
+        rc = -1;
+        goto err_open;
+    }
+
+    char child_devname[64];
+    if (grantpt(parent_ptty) || unlockpt(parent_ptty) ||
+        ptsname_r(parent_ptty, child_devname, sizeof(child_devname)) != 0) {
+        ERROR("Problem with /dev/ptmx\n");
+        rc = -1;
+        goto err_ptty;
+    }
+
+    if (forward_signals) {
+        // Block these signals until we have the child pid and our signal handlers set up.
+        block_signals(&oldset);
+    }
+
+    pid = fork();
+    if (pid < 0) {
+        ERROR("Failed to fork\n");
+        rc = -1;
+        goto err_fork;
+    } else if (pid == 0) {
+        pthread_mutex_unlock(&fd_mutex);
+        if (forward_signals) {
+            unblock_signals(&oldset);
+        }
+
+        setsid();
+
+        int child_ptty = TEMP_FAILURE_RETRY(open(child_devname, O_RDWR | O_CLOEXEC));
+        if (child_ptty < 0) {
+            FATAL_CHILD("Cannot open child_ptty: %s\n", strerror(errno));
+        }
+        close(parent_ptty);
+
+        dup2(child_ptty, 1);
+        dup2(child_ptty, 2);
+        close(child_ptty);
+
+        child(argc, argv);
+    } else {
+        if (forward_signals) {
+            setup_signal_handlers(pid);
+            unblock_signals(&oldset);
+        }
+
+        rc = parent(argv[0], parent_ptty, pid, status, log_target, abbreviated, file_path,
+                    forward_signals);
+
+        if (forward_signals) {
+            restore_signal_handlers();
+        }
+    }
+
+err_fork:
+    if (forward_signals) {
+        unblock_signals(&oldset);
+    }
+err_ptty:
+    close(parent_ptty);
+err_open:
+    pthread_mutex_unlock(&fd_mutex);
+err_lock:
+    return rc;
+}
diff --git a/logwrapper/logwrap_fork_execvp_benchmark.cpp b/logwrapper/logwrap_fork_execvp_benchmark.cpp
new file mode 100644
index 0000000..b2d0c71
--- /dev/null
+++ b/logwrapper/logwrap_fork_execvp_benchmark.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "logwrap/logwrap.h"
+
+#include <android-base/logging.h>
+#include <benchmark/benchmark.h>
+
+static void BM_android_fork_execvp_ext(benchmark::State& state) {
+    const char* argv[] = {"/system/bin/echo", "hello", "world"};
+    const int argc = 3;
+    while (state.KeepRunning()) {
+        int rc = logwrap_fork_execvp(argc, argv, nullptr, false, LOG_NONE, false, nullptr);
+        CHECK_EQ(0, rc);
+    }
+}
+BENCHMARK(BM_android_fork_execvp_ext);
+
+BENCHMARK_MAIN();
diff --git a/logwrapper/logwrapper.c b/logwrapper/logwrapper.c
deleted file mode 100644
index 33454c6..0000000
--- a/logwrapper/logwrapper.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <cutils/klog.h>
-#include <log/log.h>
-#include <logwrap/logwrap.h>
-
-void fatal(const char *msg) {
-    fprintf(stderr, "%s", msg);
-    ALOG(LOG_ERROR, "logwrapper", "%s", msg);
-    exit(-1);
-}
-
-void usage() {
-    fatal(
-        "Usage: logwrapper [-a] [-d] [-k] BINARY [ARGS ...]\n"
-        "\n"
-        "Forks and executes BINARY ARGS, redirecting stdout and stderr to\n"
-        "the Android logging system. Tag is set to BINARY, priority is\n"
-        "always LOG_INFO.\n"
-        "\n"
-        "-a: Causes logwrapper to do abbreviated logging.\n"
-        "    This logs up to the first 4K and last 4K of the command\n"
-        "    being run, and logs the output when the command exits\n"
-        "-d: Causes logwrapper to SIGSEGV when BINARY terminates\n"
-        "    fault address is set to the status of wait()\n"
-        "-k: Causes logwrapper to log to the kernel log instead of\n"
-        "    the Android system log\n");
-}
-
-int main(int argc, char* argv[]) {
-    int seg_fault_on_exit = 0;
-    int log_target = LOG_ALOG;
-    bool abbreviated = false;
-    int ch;
-    int status = 0xAAAA;
-    int rc;
-
-    while ((ch = getopt(argc, argv, "adk")) != -1) {
-        switch (ch) {
-            case 'a':
-                abbreviated = true;
-                break;
-            case 'd':
-                seg_fault_on_exit = 1;
-                break;
-            case 'k':
-                log_target = LOG_KLOG;
-                klog_set_level(6);
-                break;
-            case '?':
-            default:
-              usage();
-        }
-    }
-    argc -= optind;
-    argv += optind;
-
-    if (argc < 1) {
-        usage();
-    }
-
-    rc = android_fork_execvp_ext(argc, &argv[0], &status, true,
-                                 log_target, abbreviated, NULL, NULL, 0);
-    if (!rc) {
-        if (WIFEXITED(status))
-            rc = WEXITSTATUS(status);
-        else
-            rc = -ECHILD;
-    }
-
-    if (seg_fault_on_exit) {
-        uintptr_t fault_address = (uintptr_t) status;
-        *(int *) fault_address = 0;  // causes SIGSEGV with fault_address = status
-    }
-
-    return rc;
-}
diff --git a/logwrapper/logwrapper.cpp b/logwrapper/logwrapper.cpp
new file mode 100644
index 0000000..7118d12
--- /dev/null
+++ b/logwrapper/logwrapper.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <cutils/klog.h>
+#include <log/log.h>
+#include <logwrap/logwrap.h>
+
+void fatal(const char* msg) {
+    fprintf(stderr, "%s", msg);
+    ALOG(LOG_ERROR, "logwrapper", "%s", msg);
+    exit(-1);
+}
+
+void usage() {
+    fatal("Usage: logwrapper [-a] [-d] [-k] BINARY [ARGS ...]\n"
+          "\n"
+          "Forks and executes BINARY ARGS, redirecting stdout and stderr to\n"
+          "the Android logging system. Tag is set to BINARY, priority is\n"
+          "always LOG_INFO.\n"
+          "\n"
+          "-a: Causes logwrapper to do abbreviated logging.\n"
+          "    This logs up to the first 4K and last 4K of the command\n"
+          "    being run, and logs the output when the command exits\n"
+          "-d: Causes logwrapper to SIGSEGV when BINARY terminates\n"
+          "    fault address is set to the status of wait()\n"
+          "-k: Causes logwrapper to log to the kernel log instead of\n"
+          "    the Android system log\n");
+}
+
+int main(int argc, char* argv[]) {
+    int seg_fault_on_exit = 0;
+    int log_target = LOG_ALOG;
+    bool abbreviated = false;
+    int ch;
+    int status = 0xAAAA;
+    int rc;
+
+    while ((ch = getopt(argc, argv, "adk")) != -1) {
+        switch (ch) {
+            case 'a':
+                abbreviated = true;
+                break;
+            case 'd':
+                seg_fault_on_exit = 1;
+                break;
+            case 'k':
+                log_target = LOG_KLOG;
+                klog_set_level(6);
+                break;
+            case '?':
+            default:
+                usage();
+        }
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (argc < 1) {
+        usage();
+    }
+
+    rc = logwrap_fork_execvp(argc, &argv[0], &status, true, log_target, abbreviated, nullptr);
+    if (!rc) {
+        if (WIFEXITED(status))
+            rc = WEXITSTATUS(status);
+        else
+            rc = -ECHILD;
+    }
+
+    if (seg_fault_on_exit) {
+        uintptr_t fault_address = (uintptr_t)status;
+        *(int*)fault_address = 0;  // causes SIGSEGV with fault_address = status
+    }
+
+    return rc;
+}
diff --git a/mkbootimg/Android.bp b/mkbootimg/Android.bp
deleted file mode 100644
index c3cf746..0000000
--- a/mkbootimg/Android.bp
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2012 The Android Open Source Project
-
-cc_library_headers {
-    name: "libmkbootimg_abi_headers",
-    vendor_available: true,
-    export_include_dirs: ["include"],
-}
-
-cc_library_headers {
-    name: "bootimg_headers",
-    vendor_available: true,
-    recovery_available: true,
-    export_include_dirs: ["include/bootimg"],
-    host_supported: true,
-    target: {
-        windows: {
-            enabled: true,
-        },
-    },
-}
-
-cc_library {
-    name: "libmkbootimg_abi_check",
-    vendor_available: true,
-    vndk: {
-        enabled: true,
-    },
-    srcs: [
-        "mkbootimg_dummy.cpp",
-    ],
-    header_libs: ["libmkbootimg_abi_headers"],
-    export_header_lib_headers: ["libmkbootimg_abi_headers"],
-}
-
-python_defaults {
-    name: "mkbootimg_defaults",
-
-    version: {
-        py2: {
-            enabled: true,
-            embedded_launcher: true,
-        },
-        py3: {
-            enabled: false,
-            embedded_launcher: false,
-        },
-    },
-}
-
-python_binary_host {
-    name: "mkbootimg",
-    defaults: ["mkbootimg_defaults"],
-    srcs: [
-        "mkbootimg.py",
-    ],
-}
-
-python_binary_host {
-    name: "unpack_bootimg",
-    defaults: ["mkbootimg_defaults"],
-    srcs: [
-        "unpack_bootimg.py",
-    ],
-}
diff --git a/mkbootimg/OWNERS b/mkbootimg/OWNERS
deleted file mode 100644
index 3a00860..0000000
--- a/mkbootimg/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-hridya@google.com
-tbao@google.com
diff --git a/mkbootimg/include/abi_check/mkbootimg_abi_check.h b/mkbootimg/include/abi_check/mkbootimg_abi_check.h
deleted file mode 100644
index d478aba..0000000
--- a/mkbootimg/include/abi_check/mkbootimg_abi_check.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <bootimg/bootimg.h>
-
-// This header has been created for the following reaons:
-//    1) In order for a change in a user defined type to be classified as API /
-//       ABI breaking, it needs to be referenced by an 'exported interface'
-//       (in this case the function mkbootimg_dummy).
-//    2) Since 'mkbootimg_dummy' needs to be exported, we need to have it
-//       exposed through a public header.
-//    3) It is desirable not to pollute bootimg.h with interfaces which are not
-//       'used' in reality by on device binaries. Furthermore, bootimg.h might
-//       be exported by a library in the future, so we must avoid polluting it.
-void mkbootimg_dummy(boot_img_hdr*);
diff --git a/mkbootimg/include/bootimg/bootimg.h b/mkbootimg/include/bootimg/bootimg.h
deleted file mode 100644
index 9ee7869..0000000
--- a/mkbootimg/include/bootimg/bootimg.h
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <stdint.h>
-
-#define BOOT_MAGIC "ANDROID!"
-#define BOOT_MAGIC_SIZE 8
-#define BOOT_NAME_SIZE 16
-#define BOOT_ARGS_SIZE 512
-#define BOOT_EXTRA_ARGS_SIZE 1024
-
-// The bootloader expects the structure of boot_img_hdr with header
-// version 0 to be as follows:
-struct boot_img_hdr_v0 {
-    // Must be BOOT_MAGIC.
-    uint8_t magic[BOOT_MAGIC_SIZE];
-
-    uint32_t kernel_size; /* size in bytes */
-    uint32_t kernel_addr; /* physical load addr */
-
-    uint32_t ramdisk_size; /* size in bytes */
-    uint32_t ramdisk_addr; /* physical load addr */
-
-    uint32_t second_size; /* size in bytes */
-    uint32_t second_addr; /* physical load addr */
-
-    uint32_t tags_addr; /* physical addr for kernel tags */
-    uint32_t page_size; /* flash page size we assume */
-
-    // Version of the boot image header.
-    uint32_t header_version;
-
-    // Operating system version and security patch level.
-    // For version "A.B.C" and patch level "Y-M-D":
-    //   (7 bits for each of A, B, C; 7 bits for (Y-2000), 4 bits for M)
-    //   os_version = A[31:25] B[24:18] C[17:11] (Y-2000)[10:4] M[3:0]
-    uint32_t os_version;
-
-#if __cplusplus
-    void SetOsVersion(unsigned major, unsigned minor, unsigned patch) {
-        os_version &= ((1 << 11) - 1);
-        os_version |= (((major & 0x7f) << 25) | ((minor & 0x7f) << 18) | ((patch & 0x7f) << 11));
-    }
-
-    void SetOsPatchLevel(unsigned year, unsigned month) {
-        os_version &= ~((1 << 11) - 1);
-        os_version |= (((year - 2000) & 0x7f) << 4) | ((month & 0xf) << 0);
-    }
-#endif
-
-    uint8_t name[BOOT_NAME_SIZE]; /* asciiz product name */
-
-    uint8_t cmdline[BOOT_ARGS_SIZE];
-
-    uint32_t id[8]; /* timestamp / checksum / sha1 / etc */
-
-    // Supplemental command line data; kept here to maintain
-    // binary compatibility with older versions of mkbootimg.
-    uint8_t extra_cmdline[BOOT_EXTRA_ARGS_SIZE];
-} __attribute__((packed));
-
-/*
- * It is expected that callers would explicitly specify which version of the
- * boot image header they need to use.
- */
-typedef struct boot_img_hdr_v0 boot_img_hdr;
-
-/* When a boot header is of version 0, the structure of boot image is as
- * follows:
- *
- * +-----------------+
- * | boot header     | 1 page
- * +-----------------+
- * | kernel          | n pages
- * +-----------------+
- * | ramdisk         | m pages
- * +-----------------+
- * | second stage    | o pages
- * +-----------------+
- *
- * n = (kernel_size + page_size - 1) / page_size
- * m = (ramdisk_size + page_size - 1) / page_size
- * o = (second_size + page_size - 1) / page_size
- *
- * 0. all entities are page_size aligned in flash
- * 1. kernel and ramdisk are required (size != 0)
- * 2. second is optional (second_size == 0 -> no second)
- * 3. load each element (kernel, ramdisk, second) at
- *    the specified physical address (kernel_addr, etc)
- * 4. prepare tags at tag_addr.  kernel_args[] is
- *    appended to the kernel commandline in the tags.
- * 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
- * 6. if second_size != 0: jump to second_addr
- *    else: jump to kernel_addr
- */
-
-struct boot_img_hdr_v1 : public boot_img_hdr_v0 {
-    uint32_t recovery_dtbo_size;   /* size in bytes for recovery DTBO/ACPIO image */
-    uint64_t recovery_dtbo_offset; /* offset to recovery dtbo/acpio in boot image */
-    uint32_t header_size;
-} __attribute__((packed));
-
-/* When the boot image header has a version of 2, the structure of the boot
- * image is as follows:
- *
- * +---------------------+
- * | boot header         | 1 page
- * +---------------------+
- * | kernel              | n pages
- * +---------------------+
- * | ramdisk             | m pages
- * +---------------------+
- * | second stage        | o pages
- * +---------------------+
- * | recovery dtbo/acpio | p pages
- * +---------------------+
- * | dtb                 | q pages
- * +---------------------+
-
- * n = (kernel_size + page_size - 1) / page_size
- * m = (ramdisk_size + page_size - 1) / page_size
- * o = (second_size + page_size - 1) / page_size
- * p = (recovery_dtbo_size + page_size - 1) / page_size
- * q = (dtb_size + page_size - 1) / page_size
- *
- * 0. all entities are page_size aligned in flash
- * 1. kernel, ramdisk and DTB are required (size != 0)
- * 2. recovery_dtbo/recovery_acpio is required for recovery.img in non-A/B
- *    devices(recovery_dtbo_size != 0)
- * 3. second is optional (second_size == 0 -> no second)
- * 4. load each element (kernel, ramdisk, second, dtb) at
- *    the specified physical address (kernel_addr, etc)
- * 5. If booting to recovery mode in a non-A/B device, extract recovery
- *    dtbo/acpio and apply the correct set of overlays on the base device tree
- *    depending on the hardware/product revision.
- * 6. prepare tags at tag_addr.  kernel_args[] is
- *    appended to the kernel commandline in the tags.
- * 7. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
- * 8. if second_size != 0: jump to second_addr
- *    else: jump to kernel_addr
- */
-struct boot_img_hdr_v2 : public boot_img_hdr_v1 {
-    uint32_t dtb_size; /* size in bytes for DTB image */
-    uint64_t dtb_addr; /* physical load address for DTB image */
-} __attribute__((packed));
diff --git a/mkbootimg/mkbootimg.py b/mkbootimg/mkbootimg.py
deleted file mode 100644
index 92b11a5..0000000
--- a/mkbootimg/mkbootimg.py
+++ /dev/null
@@ -1,232 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2015, The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from __future__ import print_function
-from sys import argv, exit, stderr
-from argparse import ArgumentParser, FileType, Action
-from os import fstat
-from struct import pack
-from hashlib import sha1
-import sys
-import re
-
-def filesize(f):
-    if f is None:
-        return 0
-    try:
-        return fstat(f.fileno()).st_size
-    except OSError:
-        return 0
-
-
-def update_sha(sha, f):
-    if f:
-        sha.update(f.read())
-        f.seek(0)
-        sha.update(pack('I', filesize(f)))
-    else:
-        sha.update(pack('I', 0))
-
-
-def pad_file(f, padding):
-    pad = (padding - (f.tell() & (padding - 1))) & (padding - 1)
-    f.write(pack(str(pad) + 'x'))
-
-
-def get_number_of_pages(image_size, page_size):
-    """calculates the number of pages required for the image"""
-    return (image_size + page_size - 1) / page_size
-
-
-def get_recovery_dtbo_offset(args):
-    """calculates the offset of recovery_dtbo image in the boot image"""
-    num_header_pages = 1 # header occupies a page
-    num_kernel_pages = get_number_of_pages(filesize(args.kernel), args.pagesize)
-    num_ramdisk_pages = get_number_of_pages(filesize(args.ramdisk), args.pagesize)
-    num_second_pages = get_number_of_pages(filesize(args.second), args.pagesize)
-    dtbo_offset = args.pagesize * (num_header_pages + num_kernel_pages +
-                                   num_ramdisk_pages + num_second_pages)
-    return dtbo_offset
-
-
-def write_header(args):
-    BOOT_IMAGE_HEADER_V1_SIZE = 1648
-    BOOT_IMAGE_HEADER_V2_SIZE = 1660
-    BOOT_MAGIC = 'ANDROID!'.encode()
-
-    if (args.header_version > 2):
-        raise ValueError('Boot header version %d not supported' % args.header_version)
-
-    args.output.write(pack('8s', BOOT_MAGIC))
-    args.output.write(pack('10I',
-        filesize(args.kernel),                          # size in bytes
-        args.base + args.kernel_offset,                 # physical load addr
-        filesize(args.ramdisk),                         # size in bytes
-        args.base + args.ramdisk_offset,                # physical load addr
-        filesize(args.second),                          # size in bytes
-        args.base + args.second_offset,                 # physical load addr
-        args.base + args.tags_offset,                   # physical addr for kernel tags
-        args.pagesize,                                  # flash page size we assume
-        args.header_version,                            # version of bootimage header
-        (args.os_version << 11) | args.os_patch_level)) # os version and patch level
-    args.output.write(pack('16s', args.board.encode())) # asciiz product name
-    args.output.write(pack('512s', args.cmdline[:512].encode()))
-
-    sha = sha1()
-    update_sha(sha, args.kernel)
-    update_sha(sha, args.ramdisk)
-    update_sha(sha, args.second)
-
-    if args.header_version > 0:
-        update_sha(sha, args.recovery_dtbo)
-    if args.header_version > 1:
-        update_sha(sha, args.dtb)
-
-    img_id = pack('32s', sha.digest())
-
-    args.output.write(img_id)
-    args.output.write(pack('1024s', args.cmdline[512:].encode()))
-
-    if args.header_version > 0:
-        args.output.write(pack('I', filesize(args.recovery_dtbo)))   # size in bytes
-        if args.recovery_dtbo:
-            args.output.write(pack('Q', get_recovery_dtbo_offset(args))) # recovery dtbo offset
-        else:
-            args.output.write(pack('Q', 0)) # Will be set to 0 for devices without a recovery dtbo
-
-    # Populate boot image header size for header versions 1 and 2.
-    if args.header_version == 1:
-        args.output.write(pack('I', BOOT_IMAGE_HEADER_V1_SIZE))
-    elif args.header_version == 2:
-        args.output.write(pack('I', BOOT_IMAGE_HEADER_V2_SIZE))
-
-    if args.header_version > 1:
-        args.output.write(pack('I', filesize(args.dtb)))   # size in bytes
-        args.output.write(pack('Q', args.base + args.dtb_offset)) # dtb physical load address
-    pad_file(args.output, args.pagesize)
-    return img_id
-
-
-class ValidateStrLenAction(Action):
-    def __init__(self, option_strings, dest, nargs=None, **kwargs):
-        if 'maxlen' not in kwargs:
-            raise ValueError('maxlen must be set')
-        self.maxlen = int(kwargs['maxlen'])
-        del kwargs['maxlen']
-        super(ValidateStrLenAction, self).__init__(option_strings, dest, **kwargs)
-
-    def __call__(self, parser, namespace, values, option_string=None):
-        if len(values) > self.maxlen:
-            raise ValueError('String argument too long: max {0:d}, got {1:d}'.
-                format(self.maxlen, len(values)))
-        setattr(namespace, self.dest, values)
-
-
-def write_padded_file(f_out, f_in, padding):
-    if f_in is None:
-        return
-    f_out.write(f_in.read())
-    pad_file(f_out, padding)
-
-
-def parse_int(x):
-    return int(x, 0)
-
-def parse_os_version(x):
-    match = re.search(r'^(\d{1,3})(?:\.(\d{1,3})(?:\.(\d{1,3}))?)?', x)
-    if match:
-        a = int(match.group(1))
-        b = c = 0
-        if match.lastindex >= 2:
-            b = int(match.group(2))
-        if match.lastindex == 3:
-            c = int(match.group(3))
-        # 7 bits allocated for each field
-        assert a < 128
-        assert b < 128
-        assert c < 128
-        return (a << 14) | (b << 7) | c
-    return 0
-
-def parse_os_patch_level(x):
-    match = re.search(r'^(\d{4})-(\d{2})-(\d{2})', x)
-    if match:
-        y = int(match.group(1)) - 2000
-        m = int(match.group(2))
-        # 7 bits allocated for the year, 4 bits for the month
-        assert y >= 0 and y < 128
-        assert m > 0 and m <= 12
-        return (y << 4) | m
-    return 0
-
-def parse_cmdline():
-    parser = ArgumentParser()
-    parser.add_argument('--kernel', help='path to the kernel', type=FileType('rb'),
-                        required=True)
-    parser.add_argument('--ramdisk', help='path to the ramdisk', type=FileType('rb'))
-    parser.add_argument('--second', help='path to the 2nd bootloader', type=FileType('rb'))
-    parser.add_argument('--dtb', help='path to dtb', type=FileType('rb'))
-    recovery_dtbo_group = parser.add_mutually_exclusive_group()
-    recovery_dtbo_group.add_argument('--recovery_dtbo', help='path to the recovery DTBO', type=FileType('rb'))
-    recovery_dtbo_group.add_argument('--recovery_acpio', help='path to the recovery ACPIO',
-                                     type=FileType('rb'), metavar='RECOVERY_ACPIO', dest='recovery_dtbo')
-    parser.add_argument('--cmdline', help='extra arguments to be passed on the '
-                        'kernel command line', default='', action=ValidateStrLenAction, maxlen=1536)
-    parser.add_argument('--base', help='base address', type=parse_int, default=0x10000000)
-    parser.add_argument('--kernel_offset', help='kernel offset', type=parse_int, default=0x00008000)
-    parser.add_argument('--ramdisk_offset', help='ramdisk offset', type=parse_int, default=0x01000000)
-    parser.add_argument('--second_offset', help='2nd bootloader offset', type=parse_int,
-                        default=0x00f00000)
-    parser.add_argument('--dtb_offset', help='dtb offset', type=parse_int, default=0x01f00000)
-
-    parser.add_argument('--os_version', help='operating system version', type=parse_os_version,
-                        default=0)
-    parser.add_argument('--os_patch_level', help='operating system patch level',
-                        type=parse_os_patch_level, default=0)
-    parser.add_argument('--tags_offset', help='tags offset', type=parse_int, default=0x00000100)
-    parser.add_argument('--board', help='board name', default='', action=ValidateStrLenAction,
-                        maxlen=16)
-    parser.add_argument('--pagesize', help='page size', type=parse_int,
-                        choices=[2**i for i in range(11,15)], default=2048)
-    parser.add_argument('--id', help='print the image ID on standard output',
-                        action='store_true')
-    parser.add_argument('--header_version', help='boot image header version', type=parse_int, default=0)
-    parser.add_argument('-o', '--output', help='output file name', type=FileType('wb'),
-                        required=True)
-    return parser.parse_args()
-
-
-def write_data(args):
-    write_padded_file(args.output, args.kernel, args.pagesize)
-    write_padded_file(args.output, args.ramdisk, args.pagesize)
-    write_padded_file(args.output, args.second, args.pagesize)
-
-    if args.header_version > 0:
-        write_padded_file(args.output, args.recovery_dtbo, args.pagesize)
-    if args.header_version > 1:
-        write_padded_file(args.output, args.dtb, args.pagesize)
-
-def main():
-    args = parse_cmdline()
-    img_id = write_header(args)
-    write_data(args)
-    if args.id:
-        if isinstance(img_id, str):
-            # Python 2's struct.pack returns a string, but py3 returns bytes.
-            img_id = [ord(x) for x in img_id]
-        print('0x' + ''.join('{:02x}'.format(c) for c in img_id))
-
-if __name__ == '__main__':
-    main()
diff --git a/mkbootimg/mkbootimg_dummy.cpp b/mkbootimg/mkbootimg_dummy.cpp
deleted file mode 100644
index 410d379..0000000
--- a/mkbootimg/mkbootimg_dummy.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <abi_check/mkbootimg_abi_check.h>
-
-void mkbootimg_dummy(boot_img_hdr* hdr) {
-    // TODO: Hack to trigger abi checks, remove this.
-    if (hdr) {
-        hdr--;
-    }
-}
diff --git a/mkbootimg/unpack_bootimg.py b/mkbootimg/unpack_bootimg.py
deleted file mode 100755
index 789bf5e..0000000
--- a/mkbootimg/unpack_bootimg.py
+++ /dev/null
@@ -1,152 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2018, The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""unpacks the bootimage.
-
-Extracts the kernel, ramdisk, second bootloader, dtb and recovery dtbo images.
-"""
-
-from __future__ import print_function
-from argparse import ArgumentParser, FileType
-from struct import unpack
-import os
-
-
-def create_out_dir(dir_path):
-    """creates a directory 'dir_path' if it does not exist"""
-    if not os.path.exists(dir_path):
-        os.makedirs(dir_path)
-
-
-def extract_image(offset, size, bootimage, extracted_image_name):
-    """extracts an image from the bootimage"""
-    bootimage.seek(offset)
-    with open(extracted_image_name, 'wb') as file_out:
-        file_out.write(bootimage.read(size))
-
-
-def get_number_of_pages(image_size, page_size):
-    """calculates the number of pages required for the image"""
-    return (image_size + page_size - 1) / page_size
-
-
-def unpack_bootimage(args):
-    """extracts kernel, ramdisk, second bootloader and recovery dtbo"""
-    boot_magic = unpack('8s', args.boot_img.read(8))
-    print('boot_magic: %s' % boot_magic)
-    kernel_ramdisk_second_info = unpack('10I', args.boot_img.read(10 * 4))
-    print('kernel_size: %s' % kernel_ramdisk_second_info[0])
-    print('kernel load address: %#x' % kernel_ramdisk_second_info[1])
-    print('ramdisk size: %s' % kernel_ramdisk_second_info[2])
-    print('ramdisk load address: %#x' % kernel_ramdisk_second_info[3])
-    print('second bootloader size: %s' % kernel_ramdisk_second_info[4])
-    print('second bootloader load address: %#x' % kernel_ramdisk_second_info[5])
-    print('kernel tags load address: %#x' % kernel_ramdisk_second_info[6])
-    print('page size: %s' % kernel_ramdisk_second_info[7])
-    print('boot image header version: %s' % kernel_ramdisk_second_info[8])
-    print('os version and patch level: %s' % kernel_ramdisk_second_info[9])
-
-    product_name = unpack('16s', args.boot_img.read(16))
-    print('product name: %s' % product_name)
-    cmdline = unpack('512s', args.boot_img.read(512))
-    print('command line args: %s' % cmdline)
-
-    args.boot_img.read(32)  # ignore SHA
-
-    extra_cmdline = unpack('1024s', args.boot_img.read(1024))
-    print('additional command line args: %s' % extra_cmdline)
-
-    kernel_size = kernel_ramdisk_second_info[0]
-    ramdisk_size = kernel_ramdisk_second_info[2]
-    second_size = kernel_ramdisk_second_info[4]
-    page_size = kernel_ramdisk_second_info[7]
-    version = kernel_ramdisk_second_info[8]
-    if version > 0:
-        recovery_dtbo_size = unpack('I', args.boot_img.read(1 * 4))[0]
-        print('recovery dtbo size: %s' % recovery_dtbo_size)
-        recovery_dtbo_offset = unpack('Q', args.boot_img.read(8))[0]
-        print('recovery dtbo offset: %#x' % recovery_dtbo_offset)
-        boot_header_size = unpack('I', args.boot_img.read(4))[0]
-        print('boot header size: %s' % boot_header_size)
-    else:
-        recovery_dtbo_size = 0
-    if version > 1:
-        dtb_size = unpack('I', args.boot_img.read(4))[0]
-        print('dtb size: %s' % dtb_size)
-        dtb_load_address = unpack('Q', args.boot_img.read(8))[0]
-        print('dtb address: %#x' % dtb_load_address)
-    else:
-        dtb_size = 0
-
-
-    # The first page contains the boot header
-    num_header_pages = 1
-
-    num_kernel_pages = get_number_of_pages(kernel_size, page_size)
-    kernel_offset = page_size * num_header_pages  # header occupies a page
-    image_info_list = [(kernel_offset, kernel_size, 'kernel')]
-
-    num_ramdisk_pages = get_number_of_pages(ramdisk_size, page_size)
-    ramdisk_offset = page_size * (num_header_pages + num_kernel_pages
-                                 ) # header + kernel
-    image_info_list.append((ramdisk_offset, ramdisk_size, 'ramdisk'))
-
-    if second_size > 0:
-        second_offset = page_size * (
-                num_header_pages + num_kernel_pages + num_ramdisk_pages
-                )  # header + kernel + ramdisk
-        image_info_list.append((second_offset, second_size, 'second'))
-
-    if recovery_dtbo_size > 0:
-        image_info_list.append((recovery_dtbo_offset, recovery_dtbo_size,
-                                'recovery_dtbo'))
-    if dtb_size > 0:
-        num_second_pages = get_number_of_pages(second_size, page_size)
-        num_recovery_dtbo_pages = get_number_of_pages(recovery_dtbo_size, page_size)
-        dtb_offset = page_size * (
-            num_header_pages + num_kernel_pages + num_ramdisk_pages + num_second_pages +
-            num_recovery_dtbo_pages
-        )
-
-        image_info_list.append((dtb_offset, dtb_size, 'dtb'))
-
-    for image_info in image_info_list:
-        extract_image(image_info[0], image_info[1], args.boot_img,
-                      os.path.join(args.out, image_info[2]))
-
-
-def parse_cmdline():
-    """parse command line arguments"""
-    parser = ArgumentParser(
-        description='Unpacks boot.img/recovery.img, extracts the kernel,'
-        'ramdisk, second bootloader, recovery dtbo and dtb')
-    parser.add_argument(
-        '--boot_img',
-        help='path to boot image',
-        type=FileType('rb'),
-        required=True)
-    parser.add_argument('--out', help='path to out binaries', default='out')
-    return parser.parse_args()
-
-
-def main():
-    """parse arguments and unpack boot image"""
-    args = parse_cmdline()
-    create_out_dir(args.out)
-    unpack_bootimage(args)
-
-
-if __name__ == '__main__':
-    main()
diff --git a/property_service/Android.bp b/property_service/Android.bp
deleted file mode 100644
index b44c296..0000000
--- a/property_service/Android.bp
+++ /dev/null
@@ -1 +0,0 @@
-subdirs = ["*"]
diff --git a/property_service/libpropertyinfoparser/Android.bp b/property_service/libpropertyinfoparser/Android.bp
index 5c57d69..108d15a 100644
--- a/property_service/libpropertyinfoparser/Android.bp
+++ b/property_service/libpropertyinfoparser/Android.bp
@@ -2,7 +2,9 @@
     name: "libpropertyinfoparser",
     host_supported: true,
     vendor_available: true,
+    ramdisk_available: true,
     recovery_available: true,
+    native_bridge_supported: true,
     srcs: ["property_info_parser.cpp"],
 
     cpp_std: "experimental",
diff --git a/property_service/libpropertyinfoserializer/Android.bp b/property_service/libpropertyinfoserializer/Android.bp
index 51c1226..aa02a3a 100644
--- a/property_service/libpropertyinfoserializer/Android.bp
+++ b/property_service/libpropertyinfoserializer/Android.bp
@@ -1,7 +1,6 @@
 cc_defaults {
     name: "propertyinfoserializer_defaults",
     host_supported: true,
-    vendor_available: true,
     cpp_std: "experimental",
     cppflags: [
         "-Wall",
@@ -9,8 +8,8 @@
         "-Werror",
     ],
     static_libs: [
-        "libpropertyinfoparser",
         "libbase",
+        "libpropertyinfoparser",
     ],
 }
 
diff --git a/property_service/libpropertyinfoserializer/include/property_info_serializer/property_info_serializer.h b/property_service/libpropertyinfoserializer/include/property_info_serializer/property_info_serializer.h
index 439813d..dfb1d11 100644
--- a/property_service/libpropertyinfoserializer/include/property_info_serializer/property_info_serializer.h
+++ b/property_service/libpropertyinfoserializer/include/property_info_serializer/property_info_serializer.h
@@ -14,8 +14,7 @@
 // limitations under the License.
 //
 
-#ifndef PROPERTY_INFO_SERIALIZER_H
-#define PROPERTY_INFO_SERIALIZER_H
+#pragma once
 
 #include <string>
 #include <vector>
@@ -41,11 +40,9 @@
                const std::string& default_context, const std::string& default_type,
                std::string* serialized_trie, std::string* error);
 
-void ParsePropertyInfoFile(const std::string& file_contents,
+void ParsePropertyInfoFile(const std::string& file_contents, bool require_prefix_or_exact,
                            std::vector<PropertyInfoEntry>* property_infos,
                            std::vector<std::string>* errors);
 
 }  // namespace properties
 }  // namespace android
-
-#endif
diff --git a/property_service/libpropertyinfoserializer/property_info_file.cpp b/property_service/libpropertyinfoserializer/property_info_file.cpp
index 2cdc62d..771a9ce 100644
--- a/property_service/libpropertyinfoserializer/property_info_file.cpp
+++ b/property_service/libpropertyinfoserializer/property_info_file.cpp
@@ -56,7 +56,8 @@
   return false;
 }
 
-bool ParsePropertyInfoLine(const std::string& line, PropertyInfoEntry* out, std::string* error) {
+bool ParsePropertyInfoLine(const std::string& line, bool require_prefix_or_exact,
+                           PropertyInfoEntry* out, std::string* error) {
   auto tokenizer = SpaceTokenizer(line);
 
   auto property = tokenizer.GetNext();
@@ -72,7 +73,7 @@
   }
 
   // It is not an error to not find exact_match or a type, as older files will not contain them.
-  auto exact_match = tokenizer.GetNext();
+  auto match_operation = tokenizer.GetNext();
   // We reformat type to be space deliminated regardless of the input whitespace for easier storage
   // and subsequent parsing.
   auto type_strings = std::vector<std::string>{};
@@ -82,18 +83,27 @@
     type = tokenizer.GetNext();
   }
 
+  bool exact_match = false;
+  if (match_operation == "exact") {
+    exact_match = true;
+  } else if (match_operation != "prefix" && match_operation != "" && require_prefix_or_exact) {
+    *error = "Match operation '" + match_operation +
+             "' is not valid: must be either 'prefix' or 'exact'";
+    return false;
+  }
+
   if (!type_strings.empty() && !IsTypeValid(type_strings)) {
     *error = "Type '" + Join(type_strings, " ") + "' is not valid";
     return false;
   }
 
-  *out = {property, context, Join(type_strings, " "), exact_match == "exact"};
+  *out = {property, context, Join(type_strings, " "), exact_match};
   return true;
 }
 
 }  // namespace
 
-void ParsePropertyInfoFile(const std::string& file_contents,
+void ParsePropertyInfoFile(const std::string& file_contents, bool require_prefix_or_exact,
                            std::vector<PropertyInfoEntry>* property_infos,
                            std::vector<std::string>* errors) {
   // Do not clear property_infos to allow this function to be called on multiple files, with
@@ -108,7 +118,8 @@
 
     auto property_info_entry = PropertyInfoEntry{};
     auto parse_error = std::string{};
-    if (!ParsePropertyInfoLine(trimmed_line, &property_info_entry, &parse_error)) {
+    if (!ParsePropertyInfoLine(trimmed_line, require_prefix_or_exact, &property_info_entry,
+                               &parse_error)) {
       errors->emplace_back(parse_error);
       continue;
     }
diff --git a/property_service/libpropertyinfoserializer/property_info_serializer_test.cpp b/property_service/libpropertyinfoserializer/property_info_serializer_test.cpp
index 6846a69..a643062 100644
--- a/property_service/libpropertyinfoserializer/property_info_serializer_test.cpp
+++ b/property_service/libpropertyinfoserializer/property_info_serializer_test.cpp
@@ -317,7 +317,7 @@
       {"ro.boot.bootreason", "u:object_r:bootloader_boot_reason_prop:s0", "string", false},
       {"persist.sys.boot.reason", "u:object_r:last_boot_reason_prop:s0", "string", false},
       {"sys.boot.reason", "u:object_r:system_boot_reason_prop:s0", "string", false},
-      {"ro.device_owner", "u:object_r:device_logging_prop:s0", "string", false},
+      {"ro.organization_owned", "u:object_r:device_logging_prop:s0", "string", false},
 
       {"selinux.restorecon_recursive", "u:object_r:restorecon_prop:s0", "string", false},
 
@@ -588,6 +588,7 @@
       {"ro.boottime.imsdatadaemon", "u:object_r:boottime_prop:s0"},
       {"ro.boottime.imsqmidaemon", "u:object_r:boottime_prop:s0"},
       {"ro.boottime.init", "u:object_r:boottime_prop:s0"},
+      {"ro.boottime.init.first_stage", "u:object_r:boottime_prop:s0"},
       {"ro.boottime.init.cold_boot_wait", "u:object_r:boottime_prop:s0"},
       {"ro.boottime.init.mount_all.default", "u:object_r:boottime_prop:s0"},
       {"ro.boottime.init.selinux", "u:object_r:boottime_prop:s0"},
@@ -668,7 +669,7 @@
       {"ro.crypto.type", "u:object_r:vold_prop:s0"},
       {"ro.dalvik.vm.native.bridge", "u:object_r:dalvik_prop:s0"},
       {"ro.debuggable", "u:object_r:default_prop:s0"},
-      {"ro.device_owner", "u:object_r:device_logging_prop:s0"},
+      {"ro.organization_owned", "u:object_r:device_logging_prop:s0"},
       {"ro.expect.recovery_id", "u:object_r:default_prop:s0"},
       {"ro.frp.pst", "u:object_r:default_prop:s0"},
       {"ro.hardware", "u:object_r:default_prop:s0"},
diff --git a/property_service/property_info_checker/Android.bp b/property_service/property_info_checker/Android.bp
index 7d66199..65e660a 100644
--- a/property_service/property_info_checker/Android.bp
+++ b/property_service/property_info_checker/Android.bp
@@ -7,6 +7,7 @@
         "libpropertyinfoserializer",
         "libpropertyinfoparser",
         "libbase",
+        "liblog",
         "libsepol",
     ],
     srcs: ["property_info_checker.cpp"],
diff --git a/property_service/property_info_checker/property_info_checker.cpp b/property_service/property_info_checker/property_info_checker.cpp
index 52c4383..61b368e 100644
--- a/property_service/property_info_checker/property_info_checker.cpp
+++ b/property_service/property_info_checker/property_info_checker.cpp
@@ -153,7 +153,7 @@
     }
 
     auto errors = std::vector<std::string>{};
-    ParsePropertyInfoFile(file_contents, &property_info_entries, &errors);
+    ParsePropertyInfoFile(file_contents, true, &property_info_entries, &errors);
     if (!errors.empty()) {
       for (const auto& error : errors) {
         std::cerr << "Could not read line from '" << filename << "': " << error << std::endl;
diff --git a/qemu_pipe/Android.bp b/qemu_pipe/Android.bp
index c6bda4a..ad86a4e 100644
--- a/qemu_pipe/Android.bp
+++ b/qemu_pipe/Android.bp
@@ -4,6 +4,11 @@
     name: "libqemu_pipe",
     vendor_available: true,
     recovery_available: true,
+    apex_available: [
+        "com.android.adbd",
+        // TODO(b/151398197) remove the below
+        "//apex_available:platform",
+    ],
     sanitize: {
         misc_undefined: ["integer"],
     },
diff --git a/reboot/Android.bp b/reboot/Android.bp
index 805fd9a..cc71723 100644
--- a/reboot/Android.bp
+++ b/reboot/Android.bp
@@ -5,4 +5,5 @@
     srcs: ["reboot.c"],
     shared_libs: ["libcutils"],
     cflags: ["-Werror"],
+    recovery_available: true,
 }
diff --git a/rootdir/Android.bp b/rootdir/Android.bp
new file mode 100644
index 0000000..96b5e0d
--- /dev/null
+++ b/rootdir/Android.bp
@@ -0,0 +1,26 @@
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+prebuilt_etc {
+    name: "init.rc",
+    src: "init.rc",
+    sub_dir: "init/hw",
+    required: ["fsverity_init"],
+}
+
+prebuilt_etc {
+    name: "ueventd.rc",
+    src: "ueventd.rc",
+    recovery_available: true,
+}
diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index 24b3999..a9d0ed0 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -1,22 +1,6 @@
 LOCAL_PATH:= $(call my-dir)
 
 #######################################
-# init.rc
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := init.rc
-LOCAL_SRC_FILES := $(LOCAL_MODULE)
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
-LOCAL_REQUIRED_MODULES := fsverity_init
-
-# The init symlink must be a post install command of a file that is to TARGET_ROOT_OUT.
-# Since init.rc is required for init and satisfies that requirement, we hijack it to create the symlink.
-LOCAL_POST_INSTALL_CMD := ln -sf /system/bin/init $(TARGET_ROOT_OUT)/init
-
-include $(BUILD_PREBUILT)
-
-#######################################
 # init-debug.rc
 include $(CLEAR_VARS)
 
@@ -58,15 +42,6 @@
 endif
 
 #######################################
-# fsverity_init
-
-include $(CLEAR_VARS)
-LOCAL_MODULE:= fsverity_init
-LOCAL_MODULE_CLASS := EXECUTABLES
-LOCAL_SRC_FILES := fsverity_init.sh
-include $(BUILD_PREBUILT)
-
-#######################################
 # init.environ.rc
 
 include $(CLEAR_VARS)
@@ -92,16 +67,22 @@
   EXPORT_GLOBAL_GCOV_OPTIONS := export GCOV_PREFIX /data/misc/trace
 endif
 
+EXPORT_GLOBAL_CLANG_COVERAGE_OPTIONS :=
+ifeq ($(CLANG_COVERAGE),true)
+  EXPORT_GLOBAL_CLANG_COVERAGE_OPTIONS := export LLVM_PROFILE_FILE /data/misc/trace/clang-%p-%m.profraw
+endif
+
 # Put it here instead of in init.rc module definition,
 # because init.rc is conditionally included.
 #
 # create some directories (some are mount points) and symlinks
 LOCAL_POST_INSTALL_CMD := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \
-    sbin dev proc sys system data odm oem acct config storage mnt apex debug_ramdisk $(BOARD_ROOT_EXTRA_FOLDERS)); \
+    dev proc sys system data data_mirror odm oem acct config storage mnt apex debug_ramdisk \
+    linkerconfig $(BOARD_ROOT_EXTRA_FOLDERS)); \
     ln -sf /system/bin $(TARGET_ROOT_OUT)/bin; \
     ln -sf /system/etc $(TARGET_ROOT_OUT)/etc; \
     ln -sf /data/user_de/0/com.android.shell/files/bugreports $(TARGET_ROOT_OUT)/bugreports; \
-    ln -sf /sys/kernel/debug $(TARGET_ROOT_OUT)/d; \
+    ln -sfn /sys/kernel/debug $(TARGET_ROOT_OUT)/d; \
     ln -sf /storage/self/primary $(TARGET_ROOT_OUT)/sdcard
 ifdef BOARD_USES_VENDORIMAGE
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/vendor
@@ -113,10 +94,10 @@
 else
   LOCAL_POST_INSTALL_CMD += ; ln -sf /system/product $(TARGET_ROOT_OUT)/product
 endif
-ifdef BOARD_USES_PRODUCT_SERVICESIMAGE
-  LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/product_services
+ifdef BOARD_USES_SYSTEM_EXTIMAGE
+  LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/system_ext
 else
-  LOCAL_POST_INSTALL_CMD += ; ln -sf /system/product_services $(TARGET_ROOT_OUT)/product_services
+  LOCAL_POST_INSTALL_CMD += ; ln -sf /system/system_ext $(TARGET_ROOT_OUT)/system_ext
 endif
 ifdef BOARD_USES_METADATA_PARTITION
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/metadata
@@ -157,6 +138,10 @@
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/postinstall
 endif
 
+# The init symlink must be a post install command of a file that is to TARGET_ROOT_OUT.
+# Since init.environ.rc is required for init and satisfies that requirement, we hijack it to create the symlink.
+LOCAL_POST_INSTALL_CMD += ; ln -sf /system/bin/init $(TARGET_ROOT_OUT)/init
+
 include $(BUILD_SYSTEM)/base_rules.mk
 
 $(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/init.environ.rc.in
@@ -167,6 +152,7 @@
 	$(hide) sed -i -e 's?%SYSTEMSERVERCLASSPATH%?$(PRODUCT_SYSTEM_SERVER_CLASSPATH)?g' $@
 	$(hide) sed -i -e 's?%EXPORT_GLOBAL_ASAN_OPTIONS%?$(EXPORT_GLOBAL_ASAN_OPTIONS)?g' $@
 	$(hide) sed -i -e 's?%EXPORT_GLOBAL_GCOV_OPTIONS%?$(EXPORT_GLOBAL_GCOV_OPTIONS)?g' $@
+	$(hide) sed -i -e 's?%EXPORT_GLOBAL_CLANG_COVERAGE_OPTIONS%?$(EXPORT_GLOBAL_CLANG_COVERAGE_OPTIONS)?g' $@
 	$(hide) sed -i -e 's?%EXPORT_GLOBAL_HWASAN_OPTIONS%?$(EXPORT_GLOBAL_HWASAN_OPTIONS)?g' $@
 
 # Append PLATFORM_VNDK_VERSION to base name.
@@ -176,206 +162,29 @@
 )
 endef
 
-
 #######################################
-# ld.config.txt selection variables
-#
-_enforce_vndk_at_runtime := false
-ifdef BOARD_VNDK_VERSION
-  ifneq ($(BOARD_VNDK_RUNTIME_DISABLE),true)
-    _enforce_vndk_at_runtime := true
-  endif
-endif
-
-_enforce_vndk_lite_at_runtime := false
-ifeq ($(_enforce_vndk_at_runtime),false)
-  ifeq ($(PRODUCT_TREBLE_LINKER_NAMESPACES)|$(SANITIZE_TARGET),true|)
-    _enforce_vndk_lite_at_runtime := true
-  endif
-endif
-
-#######################################
-# ld.config.txt
-#
-# For VNDK enforced devices that have defined BOARD_VNDK_VERSION, use
-# "ld.config.txt" as a source file. This configuration includes strict VNDK
-# run-time restrictions for vendor process.
-#
-# Other treblized devices, that have not defined BOARD_VNDK_VERSION or that
-# have set BOARD_VNDK_RUNTIME_DISABLE to true, use "ld.config.vndk_lite.txt"
-# as a source file. This configuration does not have strict VNDK run-time
-# restrictions.
-#
-# If the device is not treblized, use "ld.config.legacy.txt" for legacy
-# namespace configuration.
-#
+# sanitizer.libraries.txt
 include $(CLEAR_VARS)
-LOCAL_MODULE := ld.config.txt
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
-
-# Start of runtime APEX compatibility.
-#
-# Meta-comment:
-# The placing of this section is somewhat arbitrary. The LOCAL_POST_INSTALL_CMD
-# entries need to be associated with something that goes into /system.
-# ld.config.txt qualifies but it could be anything else in /system until soong
-# supports creation of symlinks. http://b/123333111
-#
-# Keeping the appearance of files/dirs having old locations for apps that have
-# come to rely on them.
-
-# http://b/121248172 - create a link from /system/usr/icu to
-# /apex/com.android.runtime/etc/icu so that apps can find the ICU .dat file.
-# A symlink can't overwrite a directory and the /system/usr/icu directory once
-# existed so the required structure must be created whatever we find.
-LOCAL_POST_INSTALL_CMD = mkdir -p $(TARGET_OUT)/usr && rm -rf $(TARGET_OUT)/usr/icu
-LOCAL_POST_INSTALL_CMD += && ln -sf /apex/com.android.runtime/etc/icu $(TARGET_OUT)/usr/icu
-
-# TODO(b/124106384): Clean up compat symlinks for ART binaries.
-ART_BINARIES := \
-  dalvikvm \
-  dalvikvm32 \
-  dalvikvm64 \
-  dex2oat \
-  dexdiag \
-  dexdump \
-  dexlist \
-  dexoptanalyzer \
-  oatdump \
-  profman \
-
-LOCAL_POST_INSTALL_CMD += && mkdir -p $(TARGET_OUT)/bin
-$(foreach b,$(ART_BINARIES), \
-  $(eval LOCAL_POST_INSTALL_CMD += \
-    && ln -sf /apex/com.android.runtime/bin/$(b) $(TARGET_OUT)/bin/$(b)) \
-)
-
-# End of runtime APEX compatibilty.
-
-ifeq ($(_enforce_vndk_at_runtime),true)
-
-# for VNDK enforced devices
-LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
-include $(BUILD_SYSTEM)/base_rules.mk
-ld_config_template := $(LOCAL_PATH)/etc/ld.config.txt
-check_backward_compatibility := true
-vndk_version := $(PLATFORM_VNDK_VERSION)
-include $(LOCAL_PATH)/update_and_install_ld_config.mk
-
-else ifeq ($(_enforce_vndk_lite_at_runtime),true)
-
-# for treblized but VNDK lightly enforced devices
-LOCAL_MODULE_STEM := ld.config.vndk_lite.txt
-include $(BUILD_SYSTEM)/base_rules.mk
-ld_config_template := $(LOCAL_PATH)/etc/ld.config.vndk_lite.txt
-vndk_version := $(PLATFORM_VNDK_VERSION)
-libz_is_llndk := true
-include $(LOCAL_PATH)/update_and_install_ld_config.mk
-
-else
-
-# for legacy non-treblized devices
-LOCAL_MODULE_STEM := $(LOCAL_MODULE)
-LOCAL_SRC_FILES := etc/ld.config.legacy.txt
-include $(BUILD_PREBUILT)
-
-endif  # ifeq ($(_enforce_vndk_at_runtime),true)
-
-# ld.config.txt for VNDK versions older than PLATFORM_VNDK_VERSION
-# are built with the VNDK libraries lists under /prebuilts/vndk.
-#
-# ld.config.$(VER).txt is built and installed for all VNDK versions
-# listed in PRODUCT_EXTRA_VNDK_VERSIONS.
-#
-# $(1): VNDK version
-define build_versioned_ld_config
-include $(CLEAR_VARS)
-LOCAL_MODULE := ld.config.$(1).txt
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
-LOCAL_MODULE_STEM := $$(LOCAL_MODULE)
-include $(BUILD_SYSTEM)/base_rules.mk
-ld_config_template := $(LOCAL_PATH)/etc/ld.config.txt
-check_backward_compatibility := true
-vndk_version := $(1)
-lib_list_from_prebuilts := true
-include $(LOCAL_PATH)/update_and_install_ld_config.mk
-endef
-
-vndk_snapshots := $(wildcard prebuilts/vndk/*)
-supported_vndk_snapshot_versions := \
-  $(strip $(patsubst prebuilts/vndk/v%,%,$(vndk_snapshots)))
-$(foreach ver,$(supported_vndk_snapshot_versions),\
-  $(eval $(call build_versioned_ld_config,$(ver))))
-
-vndk_snapshots :=
-supported_vndk_snapshot_versions :=
-
-#######################################
-# ld.config.vndk_lite.txt
-#
-# This module is only for GSI.
-#
-ifeq ($(_enforce_vndk_lite_at_runtime),false)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := ld.config.vndk_lite.txt
+LOCAL_MODULE := sanitizer.libraries.txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
 LOCAL_MODULE_STEM := $(LOCAL_MODULE)
 include $(BUILD_SYSTEM)/base_rules.mk
-ld_config_template := $(LOCAL_PATH)/etc/ld.config.vndk_lite.txt
-vndk_version := $(PLATFORM_VNDK_VERSION)
-libz_is_llndk := true
-include $(LOCAL_PATH)/update_and_install_ld_config.mk
-
-endif  # ifeq ($(_enforce_vndk_lite_at_runtime),false)
-
-_enforce_vndk_at_runtime :=
-_enforce_vndk_lite_at_runtime :=
-
-#######################################
-# ld.config.txt for recovery
-include $(CLEAR_VARS)
-LOCAL_MODULE := ld.config.recovery.txt
-LOCAL_MODULE_CLASS := ETC
-LOCAL_SRC_FILES := etc/ld.config.recovery.txt
-LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/etc
-LOCAL_MODULE_STEM := ld.config.txt
-include $(BUILD_PREBUILT)
-
-#######################################
-# llndk.libraries.txt
-include $(CLEAR_VARS)
-LOCAL_MODULE := llndk.libraries.txt
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
-LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
-include $(BUILD_SYSTEM)/base_rules.mk
-$(LOCAL_BUILT_MODULE): PRIVATE_LLNDK_LIBRARIES := $(LLNDK_LIBRARIES)
+$(LOCAL_BUILT_MODULE): PRIVATE_SANITIZER_RUNTIME_LIBRARIES := $(addsuffix .so,\
+  $(ADDRESS_SANITIZER_RUNTIME_LIBRARY) \
+  $(HWADDRESS_SANITIZER_RUNTIME_LIBRARY) \
+  $(UBSAN_RUNTIME_LIBRARY) \
+  $(TSAN_RUNTIME_LIBRARY) \
+  $(2ND_ADDRESS_SANITIZER_RUNTIME_LIBRARY) \
+  $(2ND_HWADDRESS_SANITIZER_RUNTIME_LIBRARY) \
+  $(2ND_UBSAN_RUNTIME_LIBRARY) \
+  $(2ND_TSAN_RUNTIME_LIBRARY))
 $(LOCAL_BUILT_MODULE):
 	@echo "Generate: $@"
 	@mkdir -p $(dir $@)
 	$(hide) echo -n > $@
-	$(hide) $(foreach lib,$(PRIVATE_LLNDK_LIBRARIES), \
-		echo $(lib).so >> $@;)
-
-#######################################
-# vndksp.libraries.txt
-include $(CLEAR_VARS)
-LOCAL_MODULE := vndksp.libraries.txt
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
-LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
-include $(BUILD_SYSTEM)/base_rules.mk
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_SAMEPROCESS_LIBRARIES := $(VNDK_SAMEPROCESS_LIBRARIES)
-$(LOCAL_BUILT_MODULE):
-	@echo "Generate: $@"
-	@mkdir -p $(dir $@)
-	$(hide) echo -n > $@
-	$(hide) $(foreach lib,$(PRIVATE_VNDK_SAMEPROCESS_LIBRARIES), \
-		echo $(lib).so >> $@;)
+	$(hide) $(foreach lib,$(PRIVATE_SANITIZER_RUNTIME_LIBRARIES), \
+		echo $(lib) >> $@;)
 
 #######################################
 # adb_debug.prop in debug ramdisk
diff --git a/rootdir/avb/Android.bp b/rootdir/avb/Android.bp
new file mode 100644
index 0000000..85d2786
--- /dev/null
+++ b/rootdir/avb/Android.bp
@@ -0,0 +1,20 @@
+filegroup {
+    name: "q-gsi_avbpubkey",
+    srcs: [
+        "q-gsi.avbpubkey",
+    ],
+}
+
+filegroup {
+    name: "r-gsi_avbpubkey",
+    srcs: [
+        "r-gsi.avbpubkey",
+    ],
+}
+
+filegroup {
+    name: "s-gsi_avbpubkey",
+    srcs: [
+        "s-gsi.avbpubkey",
+    ],
+}
diff --git a/rootdir/etc/ld.config.legacy.txt b/rootdir/etc/ld.config.legacy.txt
index 5aac61b..5c87843 100644
--- a/rootdir/etc/ld.config.legacy.txt
+++ b/rootdir/etc/ld.config.legacy.txt
@@ -1,167 +1,3 @@
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Bionic loader config file.
-# This gives the exactly the same namespace setup in pre-O.
-#
-
-# All binaries gets the same configuration 'legacy'
-dir.legacy = /system
-dir.legacy = /product
-dir.legacy = /vendor
-dir.legacy = /odm
-dir.legacy = /sbin
-
-# Except for /postinstall, where only /system and /product are searched
-dir.postinstall = /postinstall
-
-# Fallback entry to provide APEX namespace lookups for binaries anywhere else.
-# This must be last.
-dir.legacy = /data
-
-[legacy]
-namespace.default.isolated = false
-
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /product/${LIB}
-namespace.default.search.paths += /vendor/${LIB}
-namespace.default.search.paths += /odm/${LIB}
-
-namespace.default.asan.search.paths  = /data/asan/system/${LIB}
-namespace.default.asan.search.paths +=           /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/product/${LIB}
-namespace.default.asan.search.paths +=           /product/${LIB}
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.default.asan.search.paths +=           /vendor/${LIB}
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}
-namespace.default.asan.search.paths +=           /odm/${LIB}
-
-###############################################################################
-# APEX related namespaces.
-###############################################################################
-
-additional.namespaces = runtime,conscrypt,media,resolv
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-# If a shared library or an executable requests a shared library that
-# cannot be loaded into the default namespace, the dynamic linker tries
-# to load the shared library from the runtime namespace. And then, if the
-# shared library cannot be loaded from the runtime namespace either, the
-# dynamic linker tries to load the shared library from the resolv namespace.
-# Finally, if all attempts fail, the dynamic linker returns an error.
-namespace.default.links = runtime,resolv
-namespace.default.asan.links = runtime,resolv
-# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
-# libart.
-namespace.default.visible = true
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
-namespace.default.link.runtime.shared_libs += libnativebridge.so
-namespace.default.link.runtime.shared_libs += libnativehelper.so
-namespace.default.link.runtime.shared_libs += libnativeloader.so
-namespace.default.link.runtime.shared_libs += libandroidicu.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.default.link.runtime.shared_libs += libicui18n.so
-namespace.default.link.runtime.shared_libs += libicuuc.so
-
-# TODO(b/122876336): Remove libpac.so once it's migrated to Webview
-namespace.default.link.runtime.shared_libs += libpac.so
-
-# When libnetd_resolv.so can't be found in the default namespace, search for it
-# in the resolv namespace. Don't allow any other libraries from the resolv namespace
-# to be loaded in the default namespace.
-namespace.default.link.resolv.shared_libs = libnetd_resolv.so
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace exposes externally accessible libraries from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-namespace.runtime.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = default
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.default.allow_all_shared_libs = true
-
-###############################################################################
-# "media" APEX namespace
-#
-# This namespace is for libraries within the media APEX.
-###############################################################################
-namespace.media.isolated = true
-namespace.media.visible = true
-
-namespace.media.search.paths = /apex/com.android.media/${LIB}
-namespace.media.asan.search.paths = /apex/com.android.media/${LIB}
-
-namespace.media.permitted.paths = /apex/com.android.media/${LIB}/extractors
-
-namespace.media.links = default
-namespace.media.link.default.shared_libs  = libbinder_ndk.so
-namespace.media.link.default.shared_libs += libc.so
-namespace.media.link.default.shared_libs += libcgrouprc.so
-namespace.media.link.default.shared_libs += libdl.so
-namespace.media.link.default.shared_libs += liblog.so
-namespace.media.link.default.shared_libs += libmediametrics.so
-namespace.media.link.default.shared_libs += libmediandk.so
-namespace.media.link.default.shared_libs += libm.so
-namespace.media.link.default.shared_libs += libvndksupport.so
-
-namespace.media.link.default.shared_libs += libclang_rt.asan-aarch64-android.so
-namespace.media.link.default.shared_libs += libclang_rt.asan-arm-android.so
-namespace.media.link.default.shared_libs += libclang_rt.asan-i686-android.so
-namespace.media.link.default.shared_libs += libclang_rt.asan-x86_64-android.so
-namespace.media.link.default.shared_libs += libclang_rt.hwasan-aarch64-android.so
-
-###############################################################################
-# "conscrypt" APEX namespace
-#
-# This namespace is for libraries within the conscrypt APEX.
-###############################################################################
-namespace.conscrypt.isolated = true
-namespace.conscrypt.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.links = runtime,default
-namespace.conscrypt.link.runtime.shared_libs  = libandroidio.so
-namespace.conscrypt.link.default.shared_libs  = libc.so
-namespace.conscrypt.link.default.shared_libs += libm.so
-namespace.conscrypt.link.default.shared_libs += libdl.so
-namespace.conscrypt.link.default.shared_libs += liblog.so
-
-###############################################################################
-# "resolv" APEX namespace
-#
-# This namespace is for libraries within the resolv APEX.
-###############################################################################
-namespace.resolv.isolated = true
-namespace.resolv.visible = true
-
-namespace.resolv.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.asan.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.links = default
-namespace.resolv.link.default.shared_libs  = libc.so
-namespace.resolv.link.default.shared_libs += libcgrouprc.so
-namespace.resolv.link.default.shared_libs += libm.so
-namespace.resolv.link.default.shared_libs += libdl.so
-namespace.resolv.link.default.shared_libs += libbinder_ndk.so
-namespace.resolv.link.default.shared_libs += liblog.so
-namespace.resolv.link.default.shared_libs += libvndksupport.so
-
-###############################################################################
-# Namespace config for binaries under /postinstall.
-# Only one default namespace is defined and it has no directories other than
-# /system/lib and /product/lib in the search paths. This is because linker
-# calls realpath on the search paths and this causes selinux denial if the
-# paths (/vendor, /odm) are not allowed to the poinstall binaries.
-# There is no reason to allow the binaries to access the paths.
-###############################################################################
-[postinstall]
-namespace.default.isolated = false
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /product/${LIB}
+# This file is no longer in use.
+# Please update linker configuration generator instead.
+# You can find the code from /system/linkerconfig
\ No newline at end of file
diff --git a/rootdir/etc/ld.config.recovery.txt b/rootdir/etc/ld.config.recovery.txt
index 5d6c01a..5c87843 100644
--- a/rootdir/etc/ld.config.recovery.txt
+++ b/rootdir/etc/ld.config.recovery.txt
@@ -1,9 +1,3 @@
-# Copyright (C) 2018 The Android Open Source Project
-#
-# Bionic loader config file for recovery mode
-#
-
-dir.recovery = /system/bin
-
-[recovery]
-namespace.default.search.paths = /system/${LIB}
+# This file is no longer in use.
+# Please update linker configuration generator instead.
+# You can find the code from /system/linkerconfig
\ No newline at end of file
diff --git a/rootdir/etc/ld.config.txt b/rootdir/etc/ld.config.txt
index c95f60f..5c87843 100644
--- a/rootdir/etc/ld.config.txt
+++ b/rootdir/etc/ld.config.txt
@@ -1,698 +1,3 @@
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Bionic loader config file.
-#
-
-# Don't change the order here. The first pattern that matches with the
-# absolute path of an executable is selected.
-dir.system = /system/bin/
-dir.system = /system/xbin/
-dir.system = /%PRODUCT%/bin/
-
-dir.vendor = /odm/bin/
-dir.vendor = /vendor/bin/
-dir.vendor = /data/nativetest/odm
-dir.vendor = /data/nativetest64/odm
-dir.vendor = /data/benchmarktest/odm
-dir.vendor = /data/benchmarktest64/odm
-dir.vendor = /data/nativetest/vendor
-dir.vendor = /data/nativetest64/vendor
-dir.vendor = /data/benchmarktest/vendor
-dir.vendor = /data/benchmarktest64/vendor
-
-dir.unrestricted = /data/nativetest/unrestricted
-dir.unrestricted = /data/nativetest64/unrestricted
-
-# TODO(b/123864775): Ensure tests are run from /data/nativetest{,64} or (if
-# necessary) the unrestricted subdirs above. Then clean this up.
-dir.unrestricted = /data/local/tmp
-
-dir.postinstall = /postinstall
-
-# Fallback entry to provide APEX namespace lookups for binaries anywhere else.
-# This must be last.
-dir.system = /data
-
-[system]
-additional.namespaces = runtime,conscrypt,media,resolv,sphal,vndk,rs
-
-###############################################################################
-# "default" namespace
-#
-# Framework-side code runs in this namespace. Libs from /vendor partition
-# can't be loaded in this namespace.
-###############################################################################
-namespace.default.isolated = true
-
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /%PRODUCT%/${LIB}
-namespace.default.search.paths += /%PRODUCT_SERVICES%/${LIB}
-
-# We can't have entire /system/${LIB} as permitted paths because doing so
-# makes it possible to load libs in /system/${LIB}/vndk* directories by
-# their absolute paths (e.g. dlopen("/system/lib/vndk/libbase.so");).
-# VNDK libs are built with previous versions of Android and thus must not be
-# loaded into this namespace where libs built with the current version of
-# Android are loaded. Mixing the two types of libs in the same namespace can
-# cause unexpected problem.
-namespace.default.permitted.paths  = /system/${LIB}/drm
-namespace.default.permitted.paths += /system/${LIB}/extractors
-namespace.default.permitted.paths += /system/${LIB}/hw
-namespace.default.permitted.paths += /%PRODUCT%/${LIB}
-namespace.default.permitted.paths += /%PRODUCT_SERVICES%/${LIB}
-# These are where odex files are located. libart has to be able to dlopen the files
-namespace.default.permitted.paths += /system/framework
-namespace.default.permitted.paths += /system/app
-namespace.default.permitted.paths += /system/priv-app
-namespace.default.permitted.paths += /vendor/framework
-namespace.default.permitted.paths += /vendor/app
-namespace.default.permitted.paths += /vendor/priv-app
-namespace.default.permitted.paths += /system/vendor/framework
-namespace.default.permitted.paths += /system/vendor/app
-namespace.default.permitted.paths += /system/vendor/priv-app
-namespace.default.permitted.paths += /odm/framework
-namespace.default.permitted.paths += /odm/app
-namespace.default.permitted.paths += /odm/priv-app
-namespace.default.permitted.paths += /oem/app
-namespace.default.permitted.paths += /%PRODUCT%/framework
-namespace.default.permitted.paths += /%PRODUCT%/app
-namespace.default.permitted.paths += /%PRODUCT%/priv-app
-namespace.default.permitted.paths += /%PRODUCT_SERVICES%/framework
-namespace.default.permitted.paths += /%PRODUCT_SERVICES%/app
-namespace.default.permitted.paths += /%PRODUCT_SERVICES%/priv-app
-namespace.default.permitted.paths += /data
-namespace.default.permitted.paths += /mnt/expand
-namespace.default.permitted.paths += /apex/com.android.runtime/${LIB}/bionic
-namespace.default.permitted.paths += /system/${LIB}/bootstrap
-
-namespace.default.asan.search.paths  = /data/asan/system/${LIB}
-namespace.default.asan.search.paths +=           /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/%PRODUCT%/${LIB}
-namespace.default.asan.search.paths +=           /%PRODUCT%/${LIB}
-namespace.default.asan.search.paths += /data/asan/%PRODUCT_SERVICES%/${LIB}
-namespace.default.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
-
-namespace.default.asan.permitted.paths  = /data
-namespace.default.asan.permitted.paths += /system/${LIB}/drm
-namespace.default.asan.permitted.paths += /system/${LIB}/extractors
-namespace.default.asan.permitted.paths += /system/${LIB}/hw
-namespace.default.asan.permitted.paths += /system/framework
-namespace.default.asan.permitted.paths += /system/app
-namespace.default.asan.permitted.paths += /system/priv-app
-namespace.default.asan.permitted.paths += /vendor/framework
-namespace.default.asan.permitted.paths += /vendor/app
-namespace.default.asan.permitted.paths += /vendor/priv-app
-namespace.default.asan.permitted.paths += /system/vendor/framework
-namespace.default.asan.permitted.paths += /system/vendor/app
-namespace.default.asan.permitted.paths += /system/vendor/priv-app
-namespace.default.asan.permitted.paths += /odm/framework
-namespace.default.asan.permitted.paths += /odm/app
-namespace.default.asan.permitted.paths += /odm/priv-app
-namespace.default.asan.permitted.paths += /oem/app
-namespace.default.asan.permitted.paths += /%PRODUCT%/${LIB}
-namespace.default.asan.permitted.paths += /%PRODUCT%/framework
-namespace.default.asan.permitted.paths += /%PRODUCT%/app
-namespace.default.asan.permitted.paths += /%PRODUCT%/priv-app
-namespace.default.asan.permitted.paths += /%PRODUCT_SERVICES%/${LIB}
-namespace.default.asan.permitted.paths += /%PRODUCT_SERVICES%/framework
-namespace.default.asan.permitted.paths += /%PRODUCT_SERVICES%/app
-namespace.default.asan.permitted.paths += /%PRODUCT_SERVICES%/priv-app
-namespace.default.asan.permitted.paths += /mnt/expand
-namespace.default.asan.permitted.paths += /apex/com.android.runtime/${LIB}/bionic
-namespace.default.asan.permitted.paths += /system/${LIB}/bootstrap
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-# If a shared library or an executable requests a shared library that
-# cannot be loaded into the default namespace, the dynamic linker tries
-# to load the shared library from the runtime namespace. And then, if the
-# shared library cannot be loaded from the runtime namespace either, the
-# dynamic linker tries to load the shared library from the resolv namespace.
-# Finally, if all attempts fail, the dynamic linker returns an error.
-namespace.default.links = runtime,resolv
-# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
-# libart.
-namespace.default.visible = true
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.default.link.runtime.shared_libs += libicui18n.so
-namespace.default.link.runtime.shared_libs += libicuuc.so
-namespace.default.link.runtime.shared_libs += libnativebridge.so
-namespace.default.link.runtime.shared_libs += libnativehelper.so
-namespace.default.link.runtime.shared_libs += libnativeloader.so
-namespace.default.link.runtime.shared_libs += libandroidicu.so
-
-# TODO(b/122876336): Remove libpac.so once it's migrated to Webview
-namespace.default.link.runtime.shared_libs += libpac.so
-namespace.default.link.runtime.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-# When libnetd_resolv.so can't be found in the default namespace, search for it
-# in the resolv namespace. Don't allow any other libraries from the resolv namespace
-# to be loaded in the default namespace.
-namespace.default.link.resolv.shared_libs = libnetd_resolv.so
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace exposes externally accessible libraries from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-namespace.runtime.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = default
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.default.allow_all_shared_libs = true
-
-###############################################################################
-# "media" APEX namespace
-#
-# This namespace is for libraries within the media APEX.
-###############################################################################
-namespace.media.isolated = true
-namespace.media.visible = true
-
-namespace.media.search.paths = /apex/com.android.media/${LIB}
-namespace.media.asan.search.paths = /apex/com.android.media/${LIB}
-
-namespace.media.permitted.paths = /apex/com.android.media/${LIB}/extractors
-namespace.media.asan.permitted.paths = /apex/com.android.media/${LIB}/extractors
-
-namespace.media.links = default
-namespace.media.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.media.link.default.shared_libs += libbinder_ndk.so
-namespace.media.link.default.shared_libs += libcgrouprc.so
-namespace.media.link.default.shared_libs += libmediametrics.so
-namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-###############################################################################
-# "conscrypt" APEX namespace
-#
-# This namespace is for libraries within the conscrypt APEX.
-###############################################################################
-namespace.conscrypt.isolated = true
-namespace.conscrypt.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.links = runtime,default
-namespace.conscrypt.link.runtime.shared_libs  = libandroidio.so
-namespace.conscrypt.link.default.shared_libs  = libc.so
-namespace.conscrypt.link.default.shared_libs += libm.so
-namespace.conscrypt.link.default.shared_libs += libdl.so
-namespace.conscrypt.link.default.shared_libs += liblog.so
-
-###############################################################################
-# "resolv" APEX namespace
-#
-# This namespace is for libraries within the resolv APEX.
-###############################################################################
-namespace.resolv.isolated = true
-namespace.resolv.visible = true
-
-namespace.resolv.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.asan.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.links = default
-namespace.resolv.link.default.shared_libs  = libc.so
-namespace.resolv.link.default.shared_libs += libcgrouprc.so
-namespace.resolv.link.default.shared_libs += libm.so
-namespace.resolv.link.default.shared_libs += libdl.so
-namespace.resolv.link.default.shared_libs += libbinder_ndk.so
-namespace.resolv.link.default.shared_libs += liblog.so
-namespace.resolv.link.default.shared_libs += libvndksupport.so
-
-###############################################################################
-# "sphal" namespace
-#
-# SP-HAL(Sameprocess-HAL)s are the only vendor libraries that are allowed to be
-# loaded inside system processes. libEGL_<chipset>.so, libGLESv2_<chipset>.so,
-# android.hardware.graphics.mapper@2.0-impl.so, etc are SP-HALs.
-#
-# This namespace is exclusivly for SP-HALs. When the framework tries to dynami-
-# cally load SP-HALs, android_dlopen_ext() is used to explicitly specifying
-# that they should be searched and loaded from this namespace.
-#
-# Note that there is no link from the default namespace to this namespace.
-###############################################################################
-namespace.sphal.isolated = true
-namespace.sphal.visible = true
-
-namespace.sphal.search.paths  = /odm/${LIB}
-namespace.sphal.search.paths += /vendor/${LIB}
-namespace.sphal.search.paths += /vendor/${LIB}/hw
-
-namespace.sphal.permitted.paths  = /odm/${LIB}
-namespace.sphal.permitted.paths += /vendor/${LIB}
-namespace.sphal.permitted.paths += /system/vendor/${LIB}
-
-namespace.sphal.asan.search.paths  = /data/asan/odm/${LIB}
-namespace.sphal.asan.search.paths +=           /odm/${LIB}
-namespace.sphal.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.sphal.asan.search.paths +=           /vendor/${LIB}
-
-namespace.sphal.asan.permitted.paths  = /data/asan/odm/${LIB}
-namespace.sphal.asan.permitted.paths +=           /odm/${LIB}
-namespace.sphal.asan.permitted.paths += /data/asan/vendor/${LIB}
-namespace.sphal.asan.permitted.paths +=           /vendor/${LIB}
-
-# Once in this namespace, access to libraries in /system/lib is restricted. Only
-# libs listed here can be used. Order is important here as the namespaces are
-# tried in this order. rs should be before vndk because both are capable
-# of loading libRS_internal.so
-namespace.sphal.links = rs,default,vndk
-
-# Renderscript gets separate namespace
-namespace.sphal.link.rs.shared_libs = libRS_internal.so
-
-namespace.sphal.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.sphal.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.sphal.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
-
-###############################################################################
-# "rs" namespace
-#
-# This namespace is exclusively for Renderscript internal libraries.
-# This namespace has slightly looser restriction than the vndk namespace because
-# of the genuine characteristics of Renderscript; /data is in the permitted path
-# to load the compiled *.so file and libmediandk.so can be used here.
-###############################################################################
-namespace.rs.isolated = true
-namespace.rs.visible = true
-
-namespace.rs.search.paths  = /odm/${LIB}/vndk-sp
-namespace.rs.search.paths += /vendor/${LIB}/vndk-sp
-namespace.rs.search.paths += /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.rs.search.paths += /odm/${LIB}
-namespace.rs.search.paths += /vendor/${LIB}
-
-namespace.rs.permitted.paths  = /odm/${LIB}
-namespace.rs.permitted.paths += /vendor/${LIB}
-namespace.rs.permitted.paths += /system/vendor/${LIB}
-namespace.rs.permitted.paths += /data
-
-namespace.rs.asan.search.paths  = /data/asan/odm/${LIB}/vndk-sp
-namespace.rs.asan.search.paths +=           /odm/${LIB}/vndk-sp
-namespace.rs.asan.search.paths += /data/asan/vendor/${LIB}/vndk-sp
-namespace.rs.asan.search.paths +=           /vendor/${LIB}/vndk-sp
-namespace.rs.asan.search.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%
-namespace.rs.asan.search.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.rs.asan.search.paths += /data/asan/odm/${LIB}
-namespace.rs.asan.search.paths +=           /odm/${LIB}
-namespace.rs.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.rs.asan.search.paths +=           /vendor/${LIB}
-
-namespace.rs.asan.permitted.paths  = /data/asan/odm/${LIB}
-namespace.rs.asan.permitted.paths +=           /odm/${LIB}
-namespace.rs.asan.permitted.paths += /data/asan/vendor/${LIB}
-namespace.rs.asan.permitted.paths +=           /vendor/${LIB}
-namespace.rs.asan.permitted.paths += /data
-
-namespace.rs.links = default,vndk
-
-namespace.rs.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.rs.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-# Private LLNDK libs (e.g. libft2.so) are exceptionally allowed to this
-# namespace because RS framework libs are using them.
-namespace.rs.link.default.shared_libs += %PRIVATE_LLNDK_LIBRARIES%
-
-namespace.rs.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
-
-###############################################################################
-# "vndk" namespace
-#
-# This namespace is exclusively for vndk-sp libs.
-###############################################################################
-namespace.vndk.isolated = true
-namespace.vndk.visible = true
-
-namespace.vndk.search.paths  = /odm/${LIB}/vndk-sp
-namespace.vndk.search.paths += /vendor/${LIB}/vndk-sp
-namespace.vndk.search.paths += /system/${LIB}/vndk-sp%VNDK_VER%
-
-namespace.vndk.permitted.paths  = /odm/${LIB}/hw
-namespace.vndk.permitted.paths += /odm/${LIB}/egl
-namespace.vndk.permitted.paths += /vendor/${LIB}/hw
-namespace.vndk.permitted.paths += /vendor/${LIB}/egl
-namespace.vndk.permitted.paths += /system/vendor/${LIB}/hw
-namespace.vndk.permitted.paths += /system/vendor/${LIB}/egl
-# This is exceptionally required since android.hidl.memory@1.0-impl.so is here
-namespace.vndk.permitted.paths += /system/${LIB}/vndk-sp%VNDK_VER%/hw
-
-namespace.vndk.asan.search.paths  = /data/asan/odm/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths +=           /odm/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths += /data/asan/vendor/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths +=           /vendor/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%
-namespace.vndk.asan.search.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%
-
-namespace.vndk.asan.permitted.paths  = /data/asan/odm/${LIB}/hw
-namespace.vndk.asan.permitted.paths +=           /odm/${LIB}/hw
-namespace.vndk.asan.permitted.paths += /data/asan/odm/${LIB}/egl
-namespace.vndk.asan.permitted.paths +=           /odm/${LIB}/egl
-namespace.vndk.asan.permitted.paths += /data/asan/vendor/${LIB}/hw
-namespace.vndk.asan.permitted.paths +=           /vendor/${LIB}/hw
-namespace.vndk.asan.permitted.paths += /data/asan/vendor/${LIB}/egl
-namespace.vndk.asan.permitted.paths +=           /vendor/${LIB}/egl
-
-namespace.vndk.asan.permitted.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%/hw
-namespace.vndk.asan.permitted.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%/hw
-
-# The "vndk" namespace links to "default" namespace for LLNDK libs and links to
-# "sphal" namespace for vendor libs.  The ordering matters.  The "default"
-# namespace has higher priority than the "sphal" namespace.
-namespace.vndk.links = default,sphal,runtime
-
-# When these NDK libs are required inside this namespace, then it is redirected
-# to the default namespace. This is possible since their ABI is stable across
-# Android releases.
-namespace.vndk.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.vndk.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.vndk.link.runtime.shared_libs = %SANITIZER_RUNTIME_LIBRARIES%
-
-# Allow VNDK-SP extensions to use vendor libraries
-namespace.vndk.link.sphal.allow_all_shared_libs = true
-
-
-###############################################################################
-# Namespace config for vendor processes. In O, no restriction is enforced for
-# them. However, in O-MR1, access to /system/${LIB} will not be allowed to
-# the default namespace. 'system' namespace will be added to give limited
-# (LL-NDK only) access.
-###############################################################################
-[vendor]
-additional.namespaces = runtime,system,vndk%VNDK_IN_SYSTEM_NS%
-
-###############################################################################
-# "default" namespace
-#
-# This is the default linker namespace for a vendor process (a process started
-# from /vendor/bin/*). The main executable and the libs under /vendor/lib[64]
-# are loaded directly into this namespace. However, other libs under the system
-# partition (VNDK and LLNDK libraries) are not loaded here but from the
-# separate namespace 'system'. The delegation to the system namespace is done
-# via the 'namespace.default.link.system.shared_libs' property below.
-#
-# '#VNDK27#' TAG is only for building ld.config.27.txt for backward
-# compatibility. (TODO:b/123390078) Move them to a separate file.
-###############################################################################
-namespace.default.isolated = true
-namespace.default.visible = true
-
-namespace.default.search.paths  = /odm/${LIB}
-namespace.default.search.paths += /vendor/${LIB}
-
-namespace.default.permitted.paths  = /odm
-namespace.default.permitted.paths += /vendor
-namespace.default.permitted.paths += /system/vendor
-#VNDK27#namespace.default.search.paths += /vendor/${LIB}/hw
-#VNDK27#namespace.default.search.paths += /vendor/${LIB}/egl
-
-namespace.default.asan.search.paths  = /data/asan/odm/${LIB}
-namespace.default.asan.search.paths +=           /odm/${LIB}
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.default.asan.search.paths +=           /vendor/${LIB}
-#VNDK27#namespace.default.asan.search.paths += /data/asan/vendor/${LIB}/hw
-#VNDK27#namespace.default.asan.search.paths +=           /vendor/${LIB}/hw
-#VNDK27#namespace.default.asan.search.paths += /data/asan/vendor/${LIB}/egl
-#VNDK27#namespace.default.asan.search.paths +=           /vendor/${LIB}/egl
-
-namespace.default.asan.permitted.paths  = /data/asan/odm
-namespace.default.asan.permitted.paths +=           /odm
-namespace.default.asan.permitted.paths += /data/asan/vendor
-namespace.default.asan.permitted.paths +=           /vendor
-
-namespace.default.links = system,vndk%VNDK_IN_SYSTEM_NS%,runtime
-namespace.default.link.runtime.shared_libs = %SANITIZER_RUNTIME_LIBRARIES%
-namespace.default.link.system.shared_libs  = %LLNDK_LIBRARIES%
-namespace.default.link.system.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-namespace.default.link.vndk_in_system.shared_libs = %VNDK_USING_CORE_VARIANT_LIBRARIES%
-namespace.default.link.vndk.shared_libs  = %VNDK_SAMEPROCESS_LIBRARIES%
-namespace.default.link.vndk.shared_libs += %VNDK_CORE_LIBRARIES%
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace exposes externally accessible libraries from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = system
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.system.allow_all_shared_libs = true
-
-###############################################################################
-# "vndk" namespace
-#
-# This namespace is where VNDK and VNDK-SP libraries are loaded for
-# a vendor process.
-###############################################################################
-namespace.vndk.isolated = false
-
-namespace.vndk.search.paths  = /odm/${LIB}/vndk
-namespace.vndk.search.paths += /odm/${LIB}/vndk-sp
-namespace.vndk.search.paths += /vendor/${LIB}/vndk
-namespace.vndk.search.paths += /vendor/${LIB}/vndk-sp
-namespace.vndk.search.paths += /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.vndk.search.paths += /system/${LIB}/vndk%VNDK_VER%
-
-namespace.vndk.asan.search.paths  = /data/asan/odm/${LIB}/vndk
-namespace.vndk.asan.search.paths +=           /odm/${LIB}/vndk
-namespace.vndk.asan.search.paths += /data/asan/odm/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths +=           /odm/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths += /data/asan/vendor/${LIB}/vndk
-namespace.vndk.asan.search.paths +=           /vendor/${LIB}/vndk
-namespace.vndk.asan.search.paths += /data/asan/vendor/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths +=           /vendor/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%
-namespace.vndk.asan.search.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.vndk.asan.search.paths += /data/asan/system/${LIB}/vndk%VNDK_VER%
-namespace.vndk.asan.search.paths +=           /system/${LIB}/vndk%VNDK_VER%
-
-# When these NDK libs are required inside this namespace, then it is redirected
-# to the system namespace. This is possible since their ABI is stable across
-# Android releases.  The links here should be identical to that of the
-# 'vndk_in_system' namespace, except for the link between 'vndk' and
-# 'vndk_in_system'.
-namespace.vndk.links = system,default%VNDK_IN_SYSTEM_NS%,runtime
-
-namespace.vndk.link.system.shared_libs  = %LLNDK_LIBRARIES%
-namespace.vndk.link.system.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.vndk.link.default.allow_all_shared_libs = true
-
-namespace.vndk.link.runtime.shared_libs = %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.vndk.link.vndk_in_system.shared_libs = %VNDK_USING_CORE_VARIANT_LIBRARIES%
-
-###############################################################################
-# "system" namespace
-#
-# This namespace is where system libs (VNDK and LLNDK libs) are loaded for
-# a vendor process.
-###############################################################################
-namespace.system.isolated = false
-
-namespace.system.search.paths  = /system/${LIB}
-namespace.system.search.paths += /%PRODUCT%/${LIB}
-namespace.system.search.paths += /%PRODUCT_SERVICES%/${LIB}
-
-namespace.system.asan.search.paths  = /data/asan/system/${LIB}
-namespace.system.asan.search.paths +=           /system/${LIB}
-namespace.system.asan.search.paths += /data/asan/product/${LIB}
-namespace.system.asan.search.paths +=           /%PRODUCT%/${LIB}
-namespace.system.asan.search.paths += /data/asan/product_services/${LIB}
-namespace.system.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
-
-namespace.system.links = runtime
-namespace.system.link.runtime.shared_libs  = libdexfile_external.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.system.link.runtime.shared_libs += libicui18n.so
-namespace.system.link.runtime.shared_libs += libicuuc.so
-namespace.system.link.runtime.shared_libs += libnativebridge.so
-namespace.system.link.runtime.shared_libs += libnativehelper.so
-namespace.system.link.runtime.shared_libs += libnativeloader.so
-# Workaround for b/124772622
-namespace.system.link.runtime.shared_libs += libandroidicu.so
-namespace.system.link.runtime.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-###############################################################################
-# "vndk_in_system" namespace
-#
-# This namespace is where no-vendor-variant VNDK libraries are loaded for a
-# vendor process.  Note that we do not simply export these libraries from
-# "system" namespace, because in some case both the core variant and the
-# vendor variant of a VNDK library may be loaded.  In such case, we do not
-# want to eliminate double-loading because doing so means the global states
-# of the library would be shared.
-#
-# Only the no-vendor-variant VNDK libraries are whitelisted in this namespace.
-# This is to ensure that we do not load libraries needed by no-vendor-variant
-# VNDK libraries into vndk_in_system namespace.
-###############################################################################
-namespace.vndk_in_system.isolated = true
-namespace.vndk_in_system.visible = true
-
-# The search paths here should be kept the same as that of the 'system'
-# namespace.
-namespace.vndk_in_system.search.paths  = /system/${LIB}
-namespace.vndk_in_system.search.paths += /%PRODUCT%/${LIB}
-namespace.vndk_in_system.search.paths += /%PRODUCT_SERVICES%/${LIB}
-
-namespace.vndk_in_system.asan.search.paths  = /data/asan/system/${LIB}
-namespace.vndk_in_system.asan.search.paths +=           /system/${LIB}
-namespace.vndk_in_system.asan.search.paths += /data/asan/product/${LIB}
-namespace.vndk_in_system.asan.search.paths +=           /%PRODUCT%/${LIB}
-namespace.vndk_in_system.asan.search.paths += /data/asan/product_services/${LIB}
-namespace.vndk_in_system.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
-
-namespace.vndk_in_system.whitelisted = %VNDK_USING_CORE_VARIANT_LIBRARIES%
-
-# The links here should be identical to that of the 'vndk' namespace, with the
-# following exception:
-#   1. 'vndk_in_system' needs to be freely linked back to 'vndk'.
-#   2. 'vndk_in_system' does not need to link to 'default', as any library that
-#      requires anything vendor would not be a vndk_in_system library.
-namespace.vndk_in_system.links = vndk,system,runtime
-namespace.vndk_in_system.link.runtime.shared_libs = %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.vndk_in_system.link.system.shared_libs  = %LLNDK_LIBRARIES%
-namespace.vndk_in_system.link.system.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.vndk_in_system.link.vndk.allow_all_shared_libs = true
-
-
-###############################################################################
-# Namespace config for native tests that need access to both system and vendor
-# libraries. This replicates the default linker config (done by
-# init_default_namespace_no_config in bionic/linker/linker.cpp), except that it
-# includes the requisite namespace setup for APEXes.
-###############################################################################
-[unrestricted]
-additional.namespaces = runtime,media,conscrypt,resolv
-
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /odm/${LIB}
-namespace.default.search.paths += /vendor/${LIB}
-
-namespace.default.asan.search.paths  = /data/asan/system/${LIB}
-namespace.default.asan.search.paths +=           /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}
-namespace.default.asan.search.paths +=           /odm/${LIB}
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.default.asan.search.paths +=           /vendor/${LIB}
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.default.links = runtime,resolv
-namespace.default.visible = true
-
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.default.link.runtime.shared_libs += libicui18n.so
-namespace.default.link.runtime.shared_libs += libicuuc.so
-namespace.default.link.runtime.shared_libs += libnativebridge.so
-namespace.default.link.runtime.shared_libs += libnativehelper.so
-namespace.default.link.runtime.shared_libs += libnativeloader.so
-namespace.default.link.runtime.shared_libs += libandroidicu.so
-
-# TODO(b/122876336): Remove libpac.so once it's migrated to Webview
-namespace.default.link.runtime.shared_libs += libpac.so
-namespace.default.link.runtime.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.default.link.resolv.shared_libs = libnetd_resolv.so
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace exposes externally accessible libraries from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-namespace.runtime.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = default
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.default.allow_all_shared_libs = true
-
-###############################################################################
-# "media" APEX namespace
-#
-# This namespace is for libraries within the media APEX.
-###############################################################################
-namespace.media.isolated = true
-namespace.media.visible = true
-
-namespace.media.search.paths = /apex/com.android.media/${LIB}
-namespace.media.asan.search.paths = /apex/com.android.media/${LIB}
-
-namespace.media.permitted.paths = /apex/com.android.media/${LIB}/extractors
-namespace.media.asan.permitted.paths = /apex/com.android.media/${LIB}/extractors
-
-namespace.media.links = default
-namespace.media.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.media.link.default.shared_libs += libbinder_ndk.so
-namespace.media.link.default.shared_libs += libmediametrics.so
-namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-###############################################################################
-# "conscrypt" APEX namespace
-#
-# This namespace is for libraries within the conscrypt APEX.
-###############################################################################
-namespace.conscrypt.isolated = true
-namespace.conscrypt.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.links = runtime,default
-namespace.conscrypt.link.runtime.shared_libs  = libandroidio.so
-namespace.conscrypt.link.default.shared_libs  = libc.so
-namespace.conscrypt.link.default.shared_libs += libm.so
-namespace.conscrypt.link.default.shared_libs += libdl.so
-namespace.conscrypt.link.default.shared_libs += liblog.so
-
-###############################################################################
-# "resolv" APEX namespace
-#
-# This namespace is for libraries within the resolv APEX.
-###############################################################################
-namespace.resolv.isolated = true
-namespace.resolv.visible = true
-
-namespace.resolv.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.asan.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.links = default
-namespace.resolv.link.default.shared_libs  = libc.so
-namespace.resolv.link.default.shared_libs += libm.so
-namespace.resolv.link.default.shared_libs += libdl.so
-namespace.resolv.link.default.shared_libs += libbinder_ndk.so
-namespace.resolv.link.default.shared_libs += liblog.so
-
-
-###############################################################################
-# Namespace config for binaries under /postinstall.
-# Only default namespace is defined and default has no directories
-# other than /system/lib in the search paths. This is because linker calls
-# realpath on the search paths and this causes selinux denial if the paths
-# (/vendor, /odm) are not allowed to the postinstall binaries. There is no
-# reason to allow the binaries to access the paths.
-###############################################################################
-[postinstall]
-namespace.default.isolated = false
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /%PRODUCT%/${LIB}
-namespace.default.search.paths += /%PRODUCT_SERVICES%/${LIB}
-
-namespace.default.link.runtime.shared_libs = %SANITIZER_RUNTIME_LIBRARIES%
+# This file is no longer in use.
+# Please update linker configuration generator instead.
+# You can find the code from /system/linkerconfig
\ No newline at end of file
diff --git a/rootdir/etc/ld.config.vndk_lite.txt b/rootdir/etc/ld.config.vndk_lite.txt
index 5642559..5c87843 100644
--- a/rootdir/etc/ld.config.vndk_lite.txt
+++ b/rootdir/etc/ld.config.vndk_lite.txt
@@ -1,505 +1,3 @@
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Bionic loader config file.
-#
-
-# Don't change the order here. The first pattern that matches with the
-# absolute path of an executable is selected.
-dir.system = /system/bin/
-dir.system = /system/xbin/
-dir.system = /%PRODUCT%/bin/
-
-dir.vendor = /odm/bin/
-dir.vendor = /vendor/bin/
-dir.vendor = /data/nativetest/odm
-dir.vendor = /data/nativetest64/odm
-dir.vendor = /data/benchmarktest/odm
-dir.vendor = /data/benchmarktest64/odm
-dir.vendor = /data/nativetest/vendor
-dir.vendor = /data/nativetest64/vendor
-dir.vendor = /data/benchmarktest/vendor
-dir.vendor = /data/benchmarktest64/vendor
-
-dir.unrestricted = /data/nativetest/unrestricted
-dir.unrestricted = /data/nativetest64/unrestricted
-
-# TODO(b/123864775): Ensure tests are run from /data/nativetest{,64} or (if
-# necessary) the unrestricted subdirs above. Then clean this up.
-dir.unrestricted = /data/local/tmp
-
-dir.postinstall = /postinstall
-
-# Fallback entry to provide APEX namespace lookups for binaries anywhere else.
-# This must be last.
-dir.system = /data
-
-[system]
-additional.namespaces = runtime,conscrypt,media,resolv,sphal,vndk,rs
-
-###############################################################################
-# "default" namespace
-#
-# Framework-side code runs in this namespace. However, libs from other
-# partitions are also allowed temporarily.
-###############################################################################
-namespace.default.isolated = false
-
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /odm/${LIB}
-namespace.default.search.paths += /vendor/${LIB}
-namespace.default.search.paths += /%PRODUCT%/${LIB}
-namespace.default.search.paths += /%PRODUCT_SERVICES%/${LIB}
-
-namespace.default.asan.search.paths  = /data/asan/system/${LIB}
-namespace.default.asan.search.paths +=           /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}
-namespace.default.asan.search.paths +=           /odm/${LIB}
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.default.asan.search.paths +=           /vendor/${LIB}
-namespace.default.asan.search.paths += /data/asan/%PRODUCT%/${LIB}
-namespace.default.asan.search.paths +=           /%PRODUCT%/${LIB}
-namespace.default.asan.search.paths += /data/asan/%PRODUCT_SERVICES%/${LIB}
-namespace.default.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
-
-# Keep in sync with the platform namespace in the com.android.runtime APEX
-# ld.config.txt.
-# If a shared library or an executable requests a shared library that
-# cannot be loaded into the default namespace, the dynamic linker tries
-# to load the shared library from the runtime namespace. And then, if the
-# shared library cannot be loaded from the runtime namespace either, the
-# dynamic linker tries to load the shared library from the resolv namespace.
-# Finally, if all attempts fail, the dynamic linker returns an error.
-namespace.default.links = runtime,resolv
-# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
-# libart.
-namespace.default.visible = true
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.default.link.runtime.shared_libs += libicui18n.so
-namespace.default.link.runtime.shared_libs += libicuuc.so
-namespace.default.link.runtime.shared_libs += libnativebridge.so
-namespace.default.link.runtime.shared_libs += libnativehelper.so
-namespace.default.link.runtime.shared_libs += libnativeloader.so
-namespace.default.link.runtime.shared_libs += libandroidicu.so
-
-# TODO(b/122876336): Remove libpac.so once it's migrated to Webview
-namespace.default.link.runtime.shared_libs += libpac.so
-
-# When libnetd_resolv.so can't be found in the default namespace, search for it
-# in the resolv namespace. Don't allow any other libraries from the resolv namespace
-# to be loaded in the default namespace.
-namespace.default.link.resolv.shared_libs = libnetd_resolv.so
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace pulls in externally accessible libs from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-namespace.runtime.visible = true
-
-# Keep in sync with the default namespace in the com.android.runtime APEX
-# ld.config.txt.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = default
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.default.allow_all_shared_libs = true
-
-###############################################################################
-# "media" APEX namespace
-#
-# This namespace is for libraries within the media APEX.
-###############################################################################
-namespace.media.isolated = true
-namespace.media.visible = true
-
-namespace.media.search.paths = /apex/com.android.media/${LIB}
-namespace.media.asan.search.paths = /apex/com.android.media/${LIB}
-
-namespace.media.permitted.paths = /apex/com.android.media/${LIB}/extractors
-
-namespace.media.links = default
-namespace.media.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.media.link.default.shared_libs += libbinder_ndk.so
-namespace.media.link.default.shared_libs += libmediametrics.so
-namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-###############################################################################
-# "conscrypt" APEX namespace
-#
-# This namespace is for libraries within the conscrypt APEX.
-###############################################################################
-namespace.conscrypt.isolated = true
-namespace.conscrypt.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.links = runtime,default
-namespace.conscrypt.link.runtime.shared_libs  = libandroidio.so
-namespace.conscrypt.link.default.shared_libs  = libc.so
-namespace.conscrypt.link.default.shared_libs += libm.so
-namespace.conscrypt.link.default.shared_libs += libdl.so
-namespace.conscrypt.link.default.shared_libs += liblog.so
-
-###############################################################################
-# "resolv" APEX namespace
-#
-# This namespace is for libraries within the resolv APEX.
-###############################################################################
-namespace.resolv.isolated = true
-namespace.resolv.visible = true
-
-namespace.resolv.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.asan.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.links = default
-namespace.resolv.link.default.shared_libs  = libc.so
-namespace.resolv.link.default.shared_libs += libcgrouprc.so
-namespace.resolv.link.default.shared_libs += libm.so
-namespace.resolv.link.default.shared_libs += libdl.so
-namespace.resolv.link.default.shared_libs += libbinder_ndk.so
-namespace.resolv.link.default.shared_libs += liblog.so
-namespace.resolv.link.default.shared_libs += libvndksupport.so
-
-###############################################################################
-# "sphal" namespace
-#
-# SP-HAL(Sameprocess-HAL)s are the only vendor libraries that are allowed to be
-# loaded inside system processes. libEGL_<chipset>.so, libGLESv2_<chipset>.so,
-# android.hardware.graphics.mapper@2.0-impl.so, etc are SP-HALs.
-#
-# This namespace is exclusivly for SP-HALs. When the framework tries to dynami-
-# cally load SP-HALs, android_dlopen_ext() is used to explicitly specifying
-# that they should be searched and loaded from this namespace.
-#
-# Note that there is no link from the default namespace to this namespace.
-###############################################################################
-namespace.sphal.isolated = true
-namespace.sphal.visible = true
-
-namespace.sphal.search.paths  = /odm/${LIB}
-namespace.sphal.search.paths += /vendor/${LIB}
-namespace.sphal.search.paths += /vendor/${LIB}/hw
-
-namespace.sphal.permitted.paths  = /odm/${LIB}
-namespace.sphal.permitted.paths += /vendor/${LIB}
-namespace.sphal.permitted.paths += /system/vendor/${LIB}
-
-namespace.sphal.asan.search.paths  = /data/asan/odm/${LIB}
-namespace.sphal.asan.search.paths +=           /odm/${LIB}
-namespace.sphal.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.sphal.asan.search.paths +=           /vendor/${LIB}
-
-namespace.sphal.asan.permitted.paths  = /data/asan/odm/${LIB}
-namespace.sphal.asan.permitted.paths +=           /odm/${LIB}
-namespace.sphal.asan.permitted.paths += /data/asan/vendor/${LIB}
-namespace.sphal.asan.permitted.paths +=           /vendor/${LIB}
-
-# Once in this namespace, access to libraries in /system/lib is restricted. Only
-# libs listed here can be used. Order is important here as the namespaces are
-# tried in this order. rs should be before vndk because both are capable
-# of loading libRS_internal.so
-namespace.sphal.links = rs,default,vndk
-
-# Renderscript gets separate namespace
-namespace.sphal.link.rs.shared_libs = libRS_internal.so
-
-namespace.sphal.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.sphal.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.sphal.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
-
-###############################################################################
-# "rs" namespace
-#
-# This namespace is exclusively for Renderscript internal libraries.
-# This namespace has slightly looser restriction than the vndk namespace because
-# of the genuine characteristics of Renderscript; /data is in the permitted path
-# to load the compiled *.so file and libmediandk.so can be used here.
-###############################################################################
-namespace.rs.isolated = true
-namespace.rs.visible = true
-
-namespace.rs.search.paths  = /odm/${LIB}/vndk-sp
-namespace.rs.search.paths += /vendor/${LIB}/vndk-sp
-namespace.rs.search.paths += /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.rs.search.paths += /odm/${LIB}
-namespace.rs.search.paths += /vendor/${LIB}
-
-namespace.rs.permitted.paths  = /odm/${LIB}
-namespace.rs.permitted.paths += /vendor/${LIB}
-namespace.rs.permitted.paths += /system/vendor/${LIB}
-namespace.rs.permitted.paths += /data
-
-namespace.rs.asan.search.paths  = /data/asan/odm/${LIB}/vndk-sp
-namespace.rs.asan.search.paths +=           /odm/${LIB}/vndk-sp
-namespace.rs.asan.search.paths += /data/asan/vendor/${LIB}/vndk-sp
-namespace.rs.asan.search.paths +=           /vendor/${LIB}/vndk-sp
-namespace.rs.asan.search.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%
-namespace.rs.asan.search.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.rs.asan.search.paths += /data/asan/odm/${LIB}
-namespace.rs.asan.search.paths +=           /odm/${LIB}
-namespace.rs.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.rs.asan.search.paths +=           /vendor/${LIB}
-
-namespace.rs.asan.permitted.paths  = /data/asan/odm/${LIB}
-namespace.rs.asan.permitted.paths +=           /odm/${LIB}
-namespace.rs.asan.permitted.paths += /data/asan/vendor/${LIB}
-namespace.rs.asan.permitted.paths +=           /vendor/${LIB}
-namespace.rs.asan.permitted.paths += /data
-
-namespace.rs.links = default,vndk
-
-namespace.rs.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.rs.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-# Private LLNDK libs (e.g. libft2.so) are exceptionally allowed to this
-# namespace because RS framework libs are using them.
-namespace.rs.link.default.shared_libs += %PRIVATE_LLNDK_LIBRARIES%
-
-namespace.rs.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
-
-###############################################################################
-# "vndk" namespace
-#
-# This namespace is exclusively for vndk-sp libs.
-###############################################################################
-namespace.vndk.isolated = true
-namespace.vndk.visible = true
-
-namespace.vndk.search.paths  = /odm/${LIB}/vndk-sp
-namespace.vndk.search.paths += /vendor/${LIB}/vndk-sp
-namespace.vndk.search.paths += /system/${LIB}/vndk-sp%VNDK_VER%
-
-namespace.vndk.permitted.paths  = /odm/${LIB}/hw
-namespace.vndk.permitted.paths += /odm/${LIB}/egl
-namespace.vndk.permitted.paths += /vendor/${LIB}/hw
-namespace.vndk.permitted.paths += /vendor/${LIB}/egl
-namespace.vndk.permitted.paths += /system/vendor/${LIB}/egl
-# This is exceptionally required since android.hidl.memory@1.0-impl.so is here
-namespace.vndk.permitted.paths += /system/${LIB}/vndk-sp%VNDK_VER%/hw
-
-namespace.vndk.asan.search.paths  = /data/asan/odm/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths +=           /odm/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths += /data/asan/vendor/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths +=           /vendor/${LIB}/vndk-sp
-namespace.vndk.asan.search.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%
-namespace.vndk.asan.search.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%
-
-namespace.vndk.asan.permitted.paths  = /data/asan/odm/${LIB}/hw
-namespace.vndk.asan.permitted.paths +=           /odm/${LIB}/hw
-namespace.vndk.asan.permitted.paths += /data/asan/odm/${LIB}/egl
-namespace.vndk.asan.permitted.paths +=           /odm/${LIB}/egl
-namespace.vndk.asan.permitted.paths += /data/asan/vendor/${LIB}/hw
-namespace.vndk.asan.permitted.paths +=           /vendor/${LIB}/hw
-namespace.vndk.asan.permitted.paths += /data/asan/vendor/${LIB}/egl
-namespace.vndk.asan.permitted.paths +=           /vendor/${LIB}/egl
-
-namespace.vndk.asan.permitted.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%/hw
-namespace.vndk.asan.permitted.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%/hw
-
-# When these NDK libs are required inside this namespace, then it is redirected
-# to the default namespace. This is possible since their ABI is stable across
-# Android releases.
-namespace.vndk.links = default
-
-namespace.vndk.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.vndk.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-
-###############################################################################
-# Namespace config for vendor processes. In O, no restriction is enforced for
-# them. However, in O-MR1, access to /system/${LIB} will not be allowed to
-# the default namespace. 'system' namespace will be added to give limited
-# (LL-NDK only) access.
-###############################################################################
-[vendor]
-additional.namespaces = runtime
-
-namespace.default.isolated = false
-
-namespace.default.search.paths  = /odm/${LIB}
-namespace.default.search.paths += /odm/${LIB}/vndk
-namespace.default.search.paths += /odm/${LIB}/vndk-sp
-namespace.default.search.paths += /vendor/${LIB}
-namespace.default.search.paths += /vendor/${LIB}/vndk
-namespace.default.search.paths += /vendor/${LIB}/vndk-sp
-
-# Access to system libraries is allowed
-namespace.default.search.paths += /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.default.search.paths += /system/${LIB}
-namespace.default.search.paths += /%PRODUCT%/${LIB}
-namespace.default.search.paths += /%PRODUCT_SERVICES%/${LIB}
-namespace.default.search.paths += /system/${LIB}/vndk%VNDK_VER%
-
-namespace.default.asan.search.paths  = /data/asan/odm/${LIB}
-namespace.default.asan.search.paths +=           /odm/${LIB}
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}/vndk
-namespace.default.asan.search.paths +=           /odm/${LIB}/vndk
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}/vndk-sp
-namespace.default.asan.search.paths +=           /odm/${LIB}/vndk-sp
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.default.asan.search.paths +=           /vendor/${LIB}
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}/vndk
-namespace.default.asan.search.paths +=           /vendor/${LIB}/vndk
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}/vndk-sp
-namespace.default.asan.search.paths +=           /vendor/${LIB}/vndk-sp
-namespace.default.asan.search.paths += /data/asan/system/${LIB}/vndk-sp%VNDK_VER%
-namespace.default.asan.search.paths +=           /system/${LIB}/vndk-sp%VNDK_VER%
-namespace.default.asan.search.paths += /data/asan/system/${LIB}
-namespace.default.asan.search.paths +=           /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/product/${LIB}
-namespace.default.asan.search.paths +=           /%PRODUCT%/${LIB}
-namespace.default.asan.search.paths += /data/asan/product_services/${LIB}
-namespace.default.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
-namespace.default.asan.search.paths += /data/asan/system/${LIB}/vndk%VNDK_VER%
-namespace.default.asan.search.paths +=           /system/${LIB}/vndk%VNDK_VER%
-
-namespace.default.links = runtime
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.default.link.runtime.shared_libs += libicui18n.so
-namespace.default.link.runtime.shared_libs += libicuuc.so
-namespace.default.link.runtime.shared_libs += libnativebridge.so
-namespace.default.link.runtime.shared_libs += libnativehelper.so
-namespace.default.link.runtime.shared_libs += libnativeloader.so
-# Workaround for b/124772622
-namespace.default.link.runtime.shared_libs += libandroidicu.so
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace exposes externally accessible libraries from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = default
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.default.allow_all_shared_libs = true
-
-###############################################################################
-# Namespace config for native tests that need access to both system and vendor
-# libraries. This replicates the default linker config (done by
-# init_default_namespace_no_config in bionic/linker/linker.cpp), except that it
-# includes the requisite namespace setup for APEXes.
-###############################################################################
-[unrestricted]
-additional.namespaces = runtime,media,conscrypt,resolv
-
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /odm/${LIB}
-namespace.default.search.paths += /vendor/${LIB}
-
-namespace.default.asan.search.paths  = /data/asan/system/${LIB}
-namespace.default.asan.search.paths +=           /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}
-namespace.default.asan.search.paths +=           /odm/${LIB}
-namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
-namespace.default.asan.search.paths +=           /vendor/${LIB}
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.default.links = runtime,resolv
-namespace.default.visible = true
-
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
-# libicuuc.so and libicui18n.so are kept for app compat reason. http://b/130788466
-namespace.default.link.runtime.shared_libs += libicui18n.so
-namespace.default.link.runtime.shared_libs += libicuuc.so
-namespace.default.link.runtime.shared_libs += libnativebridge.so
-namespace.default.link.runtime.shared_libs += libnativehelper.so
-namespace.default.link.runtime.shared_libs += libnativeloader.so
-namespace.default.link.runtime.shared_libs += libandroidicu.so
-
-# TODO(b/122876336): Remove libpac.so once it's migrated to Webview
-namespace.default.link.runtime.shared_libs += libpac.so
-namespace.default.link.runtime.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-namespace.default.link.resolv.shared_libs = libnetd_resolv.so
-
-###############################################################################
-# "runtime" APEX namespace
-#
-# This namespace exposes externally accessible libraries from the Runtime APEX.
-###############################################################################
-namespace.runtime.isolated = true
-namespace.runtime.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
-namespace.runtime.links = default
-# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
-# when it exists.
-namespace.runtime.link.default.allow_all_shared_libs = true
-
-###############################################################################
-# "media" APEX namespace
-#
-# This namespace is for libraries within the media APEX.
-###############################################################################
-namespace.media.isolated = true
-namespace.media.visible = true
-
-namespace.media.search.paths = /apex/com.android.media/${LIB}
-namespace.media.asan.search.paths = /apex/com.android.media/${LIB}
-
-namespace.media.permitted.paths = /apex/com.android.media/${LIB}/extractors
-
-namespace.media.links = default
-namespace.media.link.default.shared_libs  = %LLNDK_LIBRARIES%
-namespace.media.link.default.shared_libs += libbinder_ndk.so
-namespace.media.link.default.shared_libs += libmediametrics.so
-namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
-
-###############################################################################
-# "conscrypt" APEX namespace
-#
-# This namespace is for libraries within the conscrypt APEX.
-###############################################################################
-namespace.conscrypt.isolated = true
-namespace.conscrypt.visible = true
-
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
-namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
-namespace.conscrypt.links = runtime,default
-namespace.conscrypt.link.runtime.shared_libs  = libandroidio.so
-namespace.conscrypt.link.default.shared_libs  = libc.so
-namespace.conscrypt.link.default.shared_libs += libm.so
-namespace.conscrypt.link.default.shared_libs += libdl.so
-
-###############################################################################
-# "resolv" APEX namespace
-#
-# This namespace is for libraries within the resolv APEX.
-###############################################################################
-namespace.resolv.isolated = true
-namespace.resolv.visible = true
-
-namespace.resolv.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.asan.search.paths = /apex/com.android.resolv/${LIB}
-namespace.resolv.links = default
-namespace.resolv.link.default.shared_libs  = libc.so
-namespace.resolv.link.default.shared_libs += libcgrouprc.so
-namespace.resolv.link.default.shared_libs += libm.so
-namespace.resolv.link.default.shared_libs += libdl.so
-namespace.resolv.link.default.shared_libs += libbinder_ndk.so
-
-###############################################################################
-# Namespace config for binaries under /postinstall.
-# Only default namespace is defined and default has no directories
-# other than /system/lib in the search paths. This is because linker calls
-# realpath on the search paths and this causes selinux denial if the paths
-# (/vendor, /odm) are not allowed to the postinstall binaries. There is no
-# reason to allow the binaries to access the paths.
-###############################################################################
-[postinstall]
-namespace.default.isolated = false
-namespace.default.search.paths  = /system/${LIB}
-namespace.default.search.paths += /%PRODUCT%/${LIB}
-namespace.default.search.paths += /%PRODUCT_SERVICES%/${LIB}
+# This file is no longer in use.
+# Please update linker configuration generator instead.
+# You can find the code from /system/linkerconfig
\ No newline at end of file
diff --git a/rootdir/etc/public.libraries.android.txt b/rootdir/etc/public.libraries.android.txt
index 27e855f..405f5a9 100644
--- a/rootdir/etc/public.libraries.android.txt
+++ b/rootdir/etc/public.libraries.android.txt
@@ -17,7 +17,7 @@
 libmediandk.so
 libm.so
 libnativewindow.so
-libneuralnetworks.so
+libneuralnetworks.so nopreload
 libOpenMAXAL.so
 libOpenSLES.so
 libRS.so
diff --git a/rootdir/fsverity_init.sh b/rootdir/fsverity_init.sh
deleted file mode 100644
index 29e4519..0000000
--- a/rootdir/fsverity_init.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/system/bin/sh
-#
-# Copyright (C) 2019 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# Enforce fsverity signature checking
-echo 1 > /proc/sys/fs/verity/require_signatures
-
-# Load all keys
-for cert in /product/etc/security/fsverity/*.der; do
-  /system/bin/mini-keyctl padd asymmetric fsv_product .fs-verity < "$cert" ||
-    log -p e -t fsverity_init "Failed to load $cert"
-done
-
-# Prevent future key links to .fs-verity keyring
-/system/bin/mini-keyctl restrict_keyring .fs-verity ||
-  log -p e -t fsverity_init "Failed to restrict .fs-verity keyring"
diff --git a/rootdir/init.environ.rc.in b/rootdir/init.environ.rc.in
index 455c9a8..fdaaf1a 100644
--- a/rootdir/init.environ.rc.in
+++ b/rootdir/init.environ.rc.in
@@ -5,7 +5,8 @@
     export ANDROID_ASSETS /system/app
     export ANDROID_DATA /data
     export ANDROID_STORAGE /storage
-    export ANDROID_RUNTIME_ROOT /apex/com.android.runtime
+    export ANDROID_ART_ROOT /apex/com.android.art
+    export ANDROID_I18N_ROOT /apex/com.android.i18n
     export ANDROID_TZDATA_ROOT /apex/com.android.tzdata
     export EXTERNAL_STORAGE /sdcard
     export ASEC_MOUNTPOINT /mnt/asec
@@ -14,4 +15,5 @@
     export SYSTEMSERVERCLASSPATH %SYSTEMSERVERCLASSPATH%
     %EXPORT_GLOBAL_ASAN_OPTIONS%
     %EXPORT_GLOBAL_GCOV_OPTIONS%
+    %EXPORT_GLOBAL_CLANG_COVERAGE_OPTIONS%
     %EXPORT_GLOBAL_HWASAN_OPTIONS%
diff --git a/rootdir/init.rc b/rootdir/init.rc
index e898d4d..510d1e9 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -5,17 +5,22 @@
 #
 
 import /init.environ.rc
-import /init.usb.rc
+import /system/etc/init/hw/init.usb.rc
 import /init.${ro.hardware}.rc
 import /vendor/etc/init/hw/init.${ro.hardware}.rc
-import /init.usb.configfs.rc
-import /init.${ro.zygote}.rc
+import /system/etc/init/hw/init.usb.configfs.rc
+import /system/etc/init/hw/init.${ro.zygote}.rc
 
 # Cgroups are mounted right before early-init using list from /etc/cgroups.json
 on early-init
     # Disable sysrq from keyboard
     write /proc/sys/kernel/sysrq 0
 
+    # Android doesn't need kernel module autoloading, and it causes SELinux
+    # denials.  So disable it by setting modprobe to the empty string.  Note: to
+    # explicitly set a sysctl to an empty string, a trailing newline is needed.
+    write /proc/sys/kernel/modprobe \n
+
     # Set the security context of /adb_keys if present.
     restorecon /adb_keys
 
@@ -32,6 +37,33 @@
     # cgroup for system_server and surfaceflinger
     mkdir /dev/memcg/system 0550 system system
 
+    # symlink the Android specific /dev/tun to Linux expected /dev/net/tun
+    mkdir /dev/net 0755 root root
+    symlink ../tun /dev/net/tun
+
+    # set RLIMIT_NICE to allow priorities from 19 to -20
+    setrlimit nice 40 40
+
+    # Allow up to 32K FDs per process
+    setrlimit nofile 32768 32768
+
+    # Set up linker config subdirectories based on mount namespaces
+    mkdir /linkerconfig/bootstrap 0755
+    mkdir /linkerconfig/default 0755
+
+    # Disable dm-verity hash prefetching, since it doesn't help performance
+    # Read more in b/136247322
+    write /sys/module/dm_verity/parameters/prefetch_cluster 0
+
+    # Generate ld.config.txt for early executed processes
+    exec -- /system/bin/linkerconfig --target /linkerconfig/bootstrap
+    chmod 644 /linkerconfig/bootstrap/ld.config.txt
+    copy /linkerconfig/bootstrap/ld.config.txt /linkerconfig/default/ld.config.txt
+    chmod 644 /linkerconfig/default/ld.config.txt
+
+    # Mount bootstrap linker configuration as current
+    mount none /linkerconfig/bootstrap /linkerconfig bind rec
+
     start ueventd
 
     # Run apexd-bootstrap so that APEXes that provide critical libraries
@@ -39,6 +71,46 @@
     # the libraries are available to the processes started after this statement.
     exec_start apexd-bootstrap
 
+    # Generate linker config based on apex mounted in bootstrap namespace
+    update_linker_config
+
+    # These must already exist by the time boringssl_self_test32 / boringssl_self_test64 run.
+    mkdir /dev/boringssl 0755 root root
+    mkdir /dev/boringssl/selftest 0755 root root
+
+    # Mount tracefs
+    mount tracefs tracefs /sys/kernel/tracing
+
+# Run boringssl self test for each ABI so that later processes can skip it. http://b/139348610
+on early-init && property:ro.product.cpu.abilist32=*
+    exec_start boringssl_self_test32
+on early-init && property:ro.product.cpu.abilist64=*
+    exec_start boringssl_self_test64
+on property:apexd.status=ready && property:ro.product.cpu.abilist32=*
+    exec_start boringssl_self_test_apex32
+on property:apexd.status=ready && property:ro.product.cpu.abilist64=*
+    exec_start boringssl_self_test_apex64
+
+service boringssl_self_test32 /system/bin/boringssl_self_test32
+    setenv BORINGSSL_SELF_TEST_CREATE_FLAG true # Any nonempty value counts as true
+    reboot_on_failure reboot,boringssl-self-check-failed
+    stdio_to_kmsg
+
+service boringssl_self_test64 /system/bin/boringssl_self_test64
+    setenv BORINGSSL_SELF_TEST_CREATE_FLAG true # Any nonempty value counts as true
+    reboot_on_failure reboot,boringssl-self-check-failed
+    stdio_to_kmsg
+
+service boringssl_self_test_apex32 /apex/com.android.conscrypt/bin/boringssl_self_test32
+    setenv BORINGSSL_SELF_TEST_CREATE_FLAG true # Any nonempty value counts as true
+    reboot_on_failure reboot,boringssl-self-check-failed
+    stdio_to_kmsg
+
+service boringssl_self_test_apex64 /apex/com.android.conscrypt/bin/boringssl_self_test64
+    setenv BORINGSSL_SELF_TEST_CREATE_FLAG true # Any nonempty value counts as true
+    reboot_on_failure reboot,boringssl-self-check-failed
+    stdio_to_kmsg
+
 on init
     sysclktz 0
 
@@ -50,15 +122,6 @@
     symlink /proc/self/fd/1 /dev/stdout
     symlink /proc/self/fd/2 /dev/stderr
 
-    symlink /system/bin /bin
-    symlink /system/etc /etc
-
-    # Backward compatibility.
-    symlink /sys/kernel/debug /d
-
-    # Link /vendor to /system/vendor for devices without a vendor partition.
-    symlink /system/vendor /vendor
-
     # Create energy-aware scheduler tuning nodes
     mkdir /dev/stune/foreground
     mkdir /dev/stune/background
@@ -80,6 +143,14 @@
     chmod 0664 /dev/stune/top-app/tasks
     chmod 0664 /dev/stune/rt/tasks
 
+    # Create an stune group for NNAPI HAL processes
+    mkdir /dev/stune/nnapi-hal
+    chown system system /dev/stune/nnapi-hal
+    chown system system /dev/stune/nnapi-hal/tasks
+    chmod 0664 /dev/stune/nnapi-hal/tasks
+    write /dev/stune/nnapi-hal/schedtune.boost 1
+    write /dev/stune/nnapi-hal/schedtune.prefer_idle 1
+
     # Create blkio group and apply initial settings.
     # This feature needs kernel to support it, and the
     # device's init.rc must actually set the correct values.
@@ -91,7 +162,7 @@
     chmod 0664 /dev/blkio/tasks
     chmod 0664 /dev/blkio/background/tasks
     write /dev/blkio/blkio.weight 1000
-    write /dev/blkio/background/blkio.weight 500
+    write /dev/blkio/background/blkio.weight 200
     write /dev/blkio/blkio.group_idle 0
     write /dev/blkio/background/blkio.group_idle 0
 
@@ -101,13 +172,40 @@
     chmod 0770 /config/sdcardfs
     chown system package_info /config/sdcardfs
 
+    # Mount binderfs
+    mkdir /dev/binderfs
+    mount binder binder /dev/binderfs stats=global
+    chmod 0755 /dev/binderfs
+
+    # Mount fusectl
+    mount fusectl none /sys/fs/fuse/connections
+
+    symlink /dev/binderfs/binder /dev/binder
+    symlink /dev/binderfs/hwbinder /dev/hwbinder
+    symlink /dev/binderfs/vndbinder /dev/vndbinder
+
+    chmod 0666 /dev/binderfs/hwbinder
+    chmod 0666 /dev/binderfs/binder
+    chmod 0666 /dev/binderfs/vndbinder
+
     mkdir /mnt/secure 0700 root root
     mkdir /mnt/secure/asec 0700 root root
     mkdir /mnt/asec 0755 root system
     mkdir /mnt/obb 0755 root system
-    mkdir /mnt/media_rw 0750 root media_rw
+    mkdir /mnt/media_rw 0750 root external_storage
     mkdir /mnt/user 0755 root root
     mkdir /mnt/user/0 0755 root root
+    mkdir /mnt/user/0/self 0755 root root
+    mkdir /mnt/user/0/emulated 0755 root root
+    mkdir /mnt/user/0/emulated/0 0755 root root
+
+    # Prepare directories for pass through processes
+    mkdir /mnt/pass_through 0700 root root
+    mkdir /mnt/pass_through/0 0710 root media_rw
+    mkdir /mnt/pass_through/0/self 0710 root media_rw
+    mkdir /mnt/pass_through/0/emulated 0710 root media_rw
+    mkdir /mnt/pass_through/0/emulated/0 0710 root media_rw
+
     mkdir /mnt/expand 0771 system system
     mkdir /mnt/appfuse 0711 root root
 
@@ -123,7 +221,6 @@
     mkdir /mnt/runtime/full/self 0755 root root
 
     # Symlink to keep legacy apps working in multi-user world
-    symlink /storage/self/primary /sdcard
     symlink /storage/self/primary /mnt/sdcard
     symlink /mnt/user/0/primary /mnt/runtime/default/self/primary
 
@@ -225,6 +322,16 @@
     chmod 0664 /dev/cpuset/restricted/tasks
     chmod 0664 /dev/cpuset/tasks
 
+    # freezer cgroup entries
+    mkdir /dev/freezer/frozen
+    write /dev/freezer/frozen/freezer.state FROZEN
+    chown system system /dev/freezer/cgroup.procs
+    chown system system /dev/freezer/frozen
+    chown system system /dev/freezer/frozen/freezer.state
+    chown system system /dev/freezer/frozen/cgroup.procs
+
+    chmod 0664 /dev/freezer/frozen/freezer.state
+
     # make the PSI monitor accessible to others
     chown system system /proc/pressure/memory
     chmod 0664 /proc/pressure/memory
@@ -267,12 +374,6 @@
 
     export DOWNLOAD_CACHE /data/cache
 
-    # set RLIMIT_NICE to allow priorities from 19 to -20
-    setrlimit nice 40 40
-
-    # Allow up to 32K FDs per process
-    setrlimit nofile 32768 32768
-
     # This allows the ledtrig-transient properties to be created here so
     # that they can be chown'd to system:system later on boot
     write /sys/class/leds/vibrator/trigger "transient"
@@ -288,8 +389,19 @@
     chown system system /sys/power/wakeup_count
     chmod 0660 /sys/power/state
 
+    chown radio wakelock /sys/power/wake_lock
+    chown radio wakelock /sys/power/wake_unlock
+    chmod 0660 /sys/power/wake_lock
+    chmod 0660 /sys/power/wake_unlock
+
     # Start logd before any other services run to ensure we capture all of their logs.
     start logd
+    # Start lmkd before any other services run so that it can register them
+    chown root system /sys/module/lowmemorykiller/parameters/adj
+    chmod 0664 /sys/module/lowmemorykiller/parameters/adj
+    chown root system /sys/module/lowmemorykiller/parameters/minfree
+    chmod 0664 /sys/module/lowmemorykiller/parameters/minfree
+    start lmkd
 
     # Start essential services.
     start servicemanager
@@ -336,6 +448,9 @@
     # Load persist properties and override properties (if enabled) from /data.
     trigger load_persist_props_action
 
+    # Should be before netd, but after apex, properties and logging is available.
+    trigger load_bpf_programs
+
     # Now we can start zygote for devices with file based encryption
     trigger zygote-start
 
@@ -355,9 +470,6 @@
     # Once everything is setup, no need to modify /.
     # The bind+remount combination allows this to work in containers.
     mount rootfs rootfs / remount bind ro nodev
-    # Mount default storage into root namespace
-    mount none /mnt/runtime/default /storage bind rec
-    mount none none /storage slave rec
 
     # Make sure /sys/kernel/debug (if present) is labeled properly
     # Note that tracefs may be mounted under debug, so we need to cross filesystems
@@ -402,12 +514,24 @@
     mkdir /metadata/vold
     chmod 0700 /metadata/vold
     mkdir /metadata/password_slots 0771 root system
+    mkdir /metadata/bootstat 0750 system log
+    mkdir /metadata/ota 0700 root system
+    mkdir /metadata/ota/snapshots 0700 root system
 
     mkdir /metadata/apex 0700 root system
     mkdir /metadata/apex/sessions 0700 root system
+    # On some devices we see a weird behaviour in which /metadata/apex doesn't
+    # have a correct label. To workaround this bug, explicitly call restorecon
+    # on /metadata/apex. For most of the boot sequences /metadata/apex will
+    # already have a correct selinux label, meaning that this call will be a
+    # no-op.
+    restorecon_recursive /metadata/apex
+
+    mkdir /metadata/staged-install 0770 root system
 on late-fs
     # Ensure that tracefs has the correct permissions.
     # This does not work correctly if it is called in post-fs.
+    chmod 0755 /sys/kernel/tracing
     chmod 0755 /sys/kernel/debug/tracing
 
     # HALs required before storage encryption can get unlocked (FBE/FDE)
@@ -417,7 +541,6 @@
     mark_post_data
 
     # Start checkpoint before we touch data
-    start vold
     exec - system system -- /system/bin/vdc checkpoint prepareCheckpoint
 
     # We chown/chmod /data again so because mount is run as root + defaults
@@ -431,29 +554,26 @@
 
     # Start bootcharting as soon as possible after the data partition is
     # mounted to collect more data.
-    mkdir /data/bootchart 0755 shell shell
+    mkdir /data/bootchart 0755 shell shell encryption=Require
     bootchart start
 
-    # Load fsverity keys. This needs to happen before apexd, as post-install of
-    # APEXes may rely on keys.
-    exec -- /system/bin/fsverity_init
-
     # Make sure that apexd is started in the default namespace
     enter_default_mount_ns
 
     # /data/apex is now available. Start apexd to scan and activate APEXes.
-    mkdir /data/apex 0750 root system
-    mkdir /data/apex/active 0750 root system
+    mkdir /data/apex 0755 root system encryption=None
+    mkdir /data/apex/active 0755 root system
     mkdir /data/apex/backup 0700 root system
+    mkdir /data/apex/hashtree 0700 root system
     mkdir /data/apex/sessions 0700 root system
-    mkdir /data/app-staging 0750 system system
+    mkdir /data/app-staging 0750 system system encryption=None
     start apexd
 
     # Avoid predictable entropy pool. Carry over entropy from previous boot.
     copy /data/system/entropy.dat /dev/urandom
 
     # create basic filesystem structure
-    mkdir /data/misc 01771 system misc
+    mkdir /data/misc 01771 system misc encryption=Require
     mkdir /data/misc/recovery 0770 system log
     copy /data/misc/recovery/ro.build.fingerprint /data/misc/recovery/ro.build.fingerprint.1
     chmod 0440 /data/misc/recovery/ro.build.fingerprint.1
@@ -474,6 +594,7 @@
     chown bluetooth bluetooth /data/misc/bluedroid/bt_config.conf
     mkdir /data/misc/bluetooth 0770 bluetooth bluetooth
     mkdir /data/misc/bluetooth/logs 0770 bluetooth bluetooth
+    mkdir /data/misc/credstore 0700 credstore credstore
     mkdir /data/misc/keystore 0700 keystore keystore
     mkdir /data/misc/gatekeeper 0700 system system
     mkdir /data/misc/keychain 0771 system system
@@ -482,6 +603,7 @@
     mkdir /data/misc/sms 0770 system radio
     mkdir /data/misc/carrierid 0770 system radio
     mkdir /data/misc/apns 0770 system radio
+    mkdir /data/misc/emergencynumberdb 0770 system radio
     mkdir /data/misc/zoneinfo 0775 system system
     mkdir /data/misc/network_watchlist 0774 system system
     mkdir /data/misc/textclassifier 0771 system system
@@ -494,10 +616,9 @@
     mkdir /data/misc/ethernet 0770 system system
     mkdir /data/misc/dhcp 0770 dhcp dhcp
     mkdir /data/misc/user 0771 root root
-    mkdir /data/misc/perfprofd 0775 root root
     # give system access to wpa_supplicant.conf for backup and restore
     chmod 0660 /data/misc/wifi/wpa_supplicant.conf
-    mkdir /data/local 0751 root root
+    mkdir /data/local 0751 root root encryption=Require
     mkdir /data/misc/media 0700 media media
     mkdir /data/misc/audioserver 0700 audioserver audioserver
     mkdir /data/misc/cameraserver 0700 cameraserver cameraserver
@@ -511,102 +632,158 @@
     # profile file layout
     mkdir /data/misc/profiles 0771 system system
     mkdir /data/misc/profiles/cur 0771 system system
-    mkdir /data/misc/profiles/ref 0771 system system
+    mkdir /data/misc/profiles/ref 0770 system system
     mkdir /data/misc/profman 0770 system shell
     mkdir /data/misc/gcov 0770 root root
+    mkdir /data/misc/installd 0700 root root
+    mkdir /data/misc/apexdata 0711 root root
+    mkdir /data/misc/apexrollback 0700 root root
+    mkdir /data/misc/snapshotctl_log 0755 root root
+    # create location to store pre-reboot information
+    mkdir /data/misc/prereboot 0700 system system
 
-    mkdir /data/preloads 0775 system system
+    mkdir /data/preloads 0775 system system encryption=None
 
-    mkdir /data/vendor 0771 root root
-    mkdir /data/vendor_ce 0771 root root
-    mkdir /data/vendor_de 0771 root root
+    mkdir /data/vendor 0771 root root encryption=Require
+    mkdir /data/vendor_ce 0771 root root encryption=None
+    mkdir /data/vendor_de 0771 root root encryption=None
     mkdir /data/vendor/hardware 0771 root root
 
     # For security reasons, /data/local/tmp should always be empty.
     # Do not place files or directories in /data/local/tmp
     mkdir /data/local/tmp 0771 shell shell
     mkdir /data/local/traces 0777 shell shell
-    mkdir /data/data 0771 system system
-    mkdir /data/app-private 0771 system system
-    mkdir /data/app-ephemeral 0771 system system
-    mkdir /data/app-asec 0700 root root
-    mkdir /data/app-lib 0771 system system
-    mkdir /data/app 0771 system system
-    mkdir /data/property 0700 root root
-    mkdir /data/tombstones 0771 system system
+    mkdir /data/data 0771 system system encryption=None
+    mkdir /data/app-private 0771 system system encryption=Require
+    mkdir /data/app-ephemeral 0771 system system encryption=Require
+    mkdir /data/app-asec 0700 root root encryption=Require
+    mkdir /data/app-lib 0771 system system encryption=Require
+    mkdir /data/app 0771 system system encryption=Require
+    mkdir /data/property 0700 root root encryption=Require
+    mkdir /data/tombstones 0771 system system encryption=Require
     mkdir /data/vendor/tombstones 0771 root root
     mkdir /data/vendor/tombstones/wifi 0771 wifi wifi
 
     # create dalvik-cache, so as to enforce our permissions
-    mkdir /data/dalvik-cache 0771 root root
+    mkdir /data/dalvik-cache 0771 root root encryption=Require
     # create the A/B OTA directory, so as to enforce our permissions
-    mkdir /data/ota 0771 root root
+    mkdir /data/ota 0771 root root encryption=Require
 
     # create the OTA package directory. It will be accessed by GmsCore (cache
     # group), update_engine and update_verifier.
-    mkdir /data/ota_package 0770 system cache
+    mkdir /data/ota_package 0770 system cache encryption=Require
 
     # create resource-cache and double-check the perms
-    mkdir /data/resource-cache 0771 system system
+    mkdir /data/resource-cache 0771 system system encryption=Require
     chown system system /data/resource-cache
     chmod 0771 /data/resource-cache
 
     # create the lost+found directories, so as to enforce our permissions
-    mkdir /data/lost+found 0770 root root
+    mkdir /data/lost+found 0770 root root encryption=None
 
     # create directory for DRM plug-ins - give drm the read/write access to
     # the following directory.
-    mkdir /data/drm 0770 drm drm
+    mkdir /data/drm 0770 drm drm encryption=Require
 
     # create directory for MediaDrm plug-ins - give drm the read/write access to
     # the following directory.
-    mkdir /data/mediadrm 0770 mediadrm mediadrm
+    mkdir /data/mediadrm 0770 mediadrm mediadrm encryption=Require
 
-    mkdir /data/anr 0775 system system
+    mkdir /data/anr 0775 system system encryption=Require
 
     # NFC: create data/nfc for nv storage
-    mkdir /data/nfc 0770 nfc nfc
+    mkdir /data/nfc 0770 nfc nfc encryption=Require
     mkdir /data/nfc/param 0770 nfc nfc
 
     # Create all remaining /data root dirs so that they are made through init
     # and get proper encryption policy installed
-    mkdir /data/backup 0700 system system
-    mkdir /data/ss 0700 system system
+    mkdir /data/backup 0700 system system encryption=Require
+    mkdir /data/ss 0700 system system encryption=Require
 
-    mkdir /data/system 0775 system system
+    mkdir /data/system 0775 system system encryption=Require
     mkdir /data/system/dropbox 0700 system system
     mkdir /data/system/heapdump 0700 system system
     mkdir /data/system/users 0775 system system
 
-    mkdir /data/system_de 0770 system system
-    mkdir /data/system_ce 0770 system system
+    mkdir /data/system_de 0770 system system encryption=None
+    mkdir /data/system_ce 0770 system system encryption=None
 
-    mkdir /data/misc_de 01771 system misc
-    mkdir /data/misc_ce 01771 system misc
+    mkdir /data/misc_de 01771 system misc encryption=None
+    mkdir /data/misc_ce 01771 system misc encryption=None
 
-    mkdir /data/user 0711 system system
-    mkdir /data/user_de 0711 system system
-    symlink /data/data /data/user/0
+    mkdir /data/user 0711 system system encryption=None
+    mkdir /data/user_de 0711 system system encryption=None
 
-    mkdir /data/media 0770 media_rw media_rw
-    mkdir /data/media/obb 0770 media_rw media_rw
+    # Unlink /data/user/0 if we previously symlink it to /data/data
+    rm /data/user/0
 
-    mkdir /data/cache 0770 system cache
+    # Bind mount /data/user/0 to /data/data
+    mkdir /data/user/0 0700 system system encryption=None
+    mount none /data/data /data/user/0 bind rec
+
+    # A tmpfs directory, which will contain all apps CE DE data directory that
+    # bind mount from the original source.
+    mount tmpfs tmpfs /data_mirror nodev noexec nosuid mode=0700,uid=0,gid=1000
+    restorecon /data_mirror
+    mkdir /data_mirror/data_ce 0700 root root
+    mkdir /data_mirror/data_de 0700 root root
+
+    # Create CE and DE data directory for default volume
+    mkdir /data_mirror/data_ce/null 0700 root root
+    mkdir /data_mirror/data_de/null 0700 root root
+
+    # Bind mount CE and DE data directory to mirror's default volume directory
+    mount none /data/user /data_mirror/data_ce/null bind rec
+    mount none /data/user_de /data_mirror/data_de/null bind rec
+
+    # Create mirror directory for jit profiles
+    mkdir /data_mirror/cur_profiles 0700 root root
+    mount none /data/misc/profiles/cur /data_mirror/cur_profiles bind rec
+
+    mkdir /data/cache 0770 system cache encryption=Require
     mkdir /data/cache/recovery 0770 system cache
     mkdir /data/cache/backup_stage 0700 system system
     mkdir /data/cache/backup 0700 system system
 
+    # Delete these if need be, per b/139193659
+    mkdir /data/rollback 0700 system system encryption=DeleteIfNecessary
+    mkdir /data/rollback-observer 0700 system system encryption=DeleteIfNecessary
+
+    # Create root dir for Incremental Service
+    mkdir /data/incremental 0771 system system encryption=Require
+
+    # Create directories for statsd
+    mkdir /data/misc/stats-active-metric/ 0770 statsd system
+    mkdir /data/misc/stats-data/ 0770 statsd system
+    mkdir /data/misc/stats-metadata/ 0770 statsd system
+    mkdir /data/misc/stats-service/ 0770 statsd system
+    mkdir /data/misc/train-info/ 0770 statsd system
+
     # Wait for apexd to finish activating APEXes before starting more processes.
-    wait_for_prop apexd.status ready
-    parse_apex_configs
+    wait_for_prop apexd.status activated
+    perform_apex_config
+
+    # Special-case /data/media/obb per b/64566063
+    mkdir /data/media 0770 media_rw media_rw encryption=None
+    exec - media_rw media_rw -- /system/bin/chattr +F /data/media
+    mkdir /data/media/obb 0770 media_rw media_rw encryption=Attempt
+
+    exec_start derive_sdk
 
     init_user0
 
+    # Allow apexd to snapshot and restore device encrypted apex data in the case
+    # of a rollback. This should be done immediately after DE_user data keys
+    # are loaded. APEXes should not access this data until this has been
+    # completed and apexd.status becomes "ready".
+    exec_start apexd-snapshotde
+
     # Set SELinux security contexts on upgrade or policy update.
     restorecon --recursive --skip-ce /data
 
-    # Check any timezone data in /data is newer than the copy in the runtime module, delete if not.
-    exec - system system -- /system/bin/tzdatacheck /apex/com.android.runtime/etc/tz /data/misc/zoneinfo
+    # Check any timezone data in /data is newer than the copy in the time zone data
+    # module, delete if not.
+    exec - system system -- /system/bin/tzdatacheck /apex/com.android.tzdata/etc/tz /data/misc/zoneinfo
 
     # If there is no post-fs-data action in the init.<device>.rc file, you
     # must uncomment this line, otherwise encrypted filesystems
@@ -623,11 +800,31 @@
     chown root system /dev/fscklogs/log
     chmod 0770 /dev/fscklogs/log
 
+    # Enable FUSE by default
+    setprop persist.sys.fuse true
+
+# Switch between sdcardfs and FUSE depending on persist property
+# TODO: Move this to ro property before launch because FDE devices
+# interact with persistent properties differently during boot
+on zygote-start && property:persist.sys.fuse=true
+  # Mount default storage into root namespace
+  mount none /mnt/user/0 /storage bind rec
+  mount none none /storage slave rec
+on zygote-start && property:persist.sys.fuse=false
+  # Mount default storage into root namespace
+  mount none /mnt/runtime/default /storage bind rec
+  mount none none /storage slave rec
+on zygote-start && property:persist.sys.fuse=""
+  # Mount default storage into root namespace
+  mount none /mnt/runtime/default /storage bind rec
+  mount none none /storage slave rec
+
 # It is recommended to put unnecessary data/ initialization from post-fs-data
 # to start-zygote in device's init.rc to unblock zygote start.
 on zygote-start && property:ro.crypto.state=unencrypted
     # A/B update verifier that marks a successful boot.
     exec_start update_verifier_nonencrypted
+    start statsd
     start netd
     start zygote
     start zygote_secondary
@@ -635,6 +832,7 @@
 on zygote-start && property:ro.crypto.state=unsupported
     # A/B update verifier that marks a successful boot.
     exec_start update_verifier_nonencrypted
+    start statsd
     start netd
     start zygote
     start zygote_secondary
@@ -642,6 +840,7 @@
 on zygote-start && property:ro.crypto.state=encrypted && property:ro.crypto.type=file
     # A/B update verifier that marks a successful boot.
     exec_start update_verifier_nonencrypted
+    start statsd
     start netd
     start zygote
     start zygote_secondary
@@ -660,10 +859,6 @@
     # parameters to match how it is managing things.
     write /proc/sys/vm/overcommit_memory 1
     write /proc/sys/vm/min_free_order_shift 4
-    chown root system /sys/module/lowmemorykiller/parameters/adj
-    chmod 0664 /sys/module/lowmemorykiller/parameters/adj
-    chown root system /sys/module/lowmemorykiller/parameters/minfree
-    chmod 0664 /sys/module/lowmemorykiller/parameters/minfree
 
     # System server manages zram writeback
     chown root system /sys/block/zram0/idle
@@ -681,6 +876,7 @@
     # are not aware of using fsync()/sync() to prepare sudden power-cut.
     write /sys/fs/f2fs/${dev.mnt.blk.data}/cp_interval 200
     write /sys/fs/f2fs/${dev.mnt.blk.data}/gc_urgent_sleep_time 50
+    write /sys/fs/f2fs/${dev.mnt.blk.data}/iostat_enable 1
 
     # limit discard size to 128MB in order to avoid long IO latency
     # for filesystem tuning first (dm or sda)
@@ -688,16 +884,7 @@
     write /sys/devices/virtual/block/${dev.mnt.blk.data}/queue/discard_max_bytes 134217728
 
     # Permissions for System Server and daemons.
-    chown radio system /sys/android_power/state
-    chown radio system /sys/android_power/request_state
-    chown radio system /sys/android_power/acquire_full_wake_lock
-    chown radio system /sys/android_power/acquire_partial_wake_lock
-    chown radio system /sys/android_power/release_wake_lock
     chown system system /sys/power/autosleep
-    chown radio wakelock /sys/power/wake_lock
-    chown radio wakelock /sys/power/wake_unlock
-    chmod 0660 /sys/power/wake_lock
-    chmod 0660 /sys/power/wake_unlock
 
     chown system system /sys/devices/system/cpu/cpufreq/interactive/timer_rate
     chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/timer_rate
@@ -760,6 +947,9 @@
 
     class_start core
 
+    # Requires keystore (currently a core service) to be ready first.
+    exec -- /system/bin/fsverity_init
+
 on nonencrypted
     class_start main
     class_start late_start
@@ -804,7 +994,7 @@
     bootchart stop
     # Setup per_boot directory so other .rc could start to use it on boot_completed
     exec - system system -- /bin/rm -rf /data/per_boot
-    mkdir /data/per_boot 0700 system system
+    mkdir /data/per_boot 0700 system system encryption=Require key=per_boot_ref
 
 # system server cannot write to /proc/sys files,
 # and chown/chmod does not work for /proc/sys/ entries.
@@ -816,14 +1006,33 @@
 on property:sys.sysctl.tcp_def_init_rwnd=*
     write /proc/sys/net/ipv4/tcp_default_init_rwnd ${sys.sysctl.tcp_def_init_rwnd}
 
-on property:security.perf_harden=0
+# perf_event_open syscall security:
+# Newer kernels have the ability to control the use of the syscall via SELinux
+# hooks. init tests for this, and sets sys_init.perf_lsm_hooks to 1 if the
+# kernel has the hooks. In this case, the system-wide perf_event_paranoid
+# sysctl is set to -1 (unrestricted use), and the SELinux policy is used for
+# controlling access. On older kernels, the paranoid value is the only means of
+# controlling access. It is normally 3 (allow only root), but the shell user
+# can lower it to 1 (allowing thread-scoped pofiling) via security.perf_harden.
+on property:sys.init.perf_lsm_hooks=1
+    write /proc/sys/kernel/perf_event_paranoid -1
+on property:security.perf_harden=0 && property:sys.init.perf_lsm_hooks=""
     write /proc/sys/kernel/perf_event_paranoid 1
+on property:security.perf_harden=1 && property:sys.init.perf_lsm_hooks=""
+    write /proc/sys/kernel/perf_event_paranoid 3
+
+# Additionally, simpleperf profiler uses debug.* and security.perf_harden
+# sysprops to be able to indirectly set these sysctls.
+on property:security.perf_harden=0
     write /proc/sys/kernel/perf_event_max_sample_rate ${debug.perf_event_max_sample_rate:-100000}
     write /proc/sys/kernel/perf_cpu_time_max_percent ${debug.perf_cpu_time_max_percent:-25}
     write /proc/sys/kernel/perf_event_mlock_kb ${debug.perf_event_mlock_kb:-516}
-
+# Default values.
 on property:security.perf_harden=1
-    write /proc/sys/kernel/perf_event_paranoid 3
+    write /proc/sys/kernel/perf_event_max_sample_rate 100000
+    write /proc/sys/kernel/perf_cpu_time_max_percent 25
+    write /proc/sys/kernel/perf_event_mlock_kb 516
+
 
 # on shutdown
 # In device's init.rc, this trigger can be used to do device-specific actions
@@ -852,8 +1061,43 @@
     chmod 0773 /data/misc/trace
     # Give reads to anyone for the window trace folder on debug builds.
     chmod 0775 /data/misc/wmtrace
+
+on init && property:ro.debuggable=1
     start console
 
-service flash_recovery /system/bin/install-recovery.sh
-    class main
-    oneshot
+on userspace-reboot-requested
+  # TODO(b/135984674): reset all necessary properties here.
+  setprop sys.boot_completed ""
+  setprop dev.bootcomplete ""
+  setprop sys.init.updatable_crashing ""
+  setprop sys.init.updatable_crashing_process_name ""
+  setprop apexd.status ""
+  setprop sys.user.0.ce_available ""
+  setprop sys.shutdown.requested ""
+  setprop service.bootanim.exit ""
+
+on userspace-reboot-fs-remount
+  # Make sure that vold is running.
+  # This is mostly a precaution measure in case vold for some reason wasn't running when
+  # userspace reboot was initiated.
+  start vold
+  exec - system system -- /system/bin/vdc checkpoint resetCheckpoint
+  exec - system system -- /system/bin/vdc checkpoint markBootAttempt
+  # Unmount /data_mirror mounts in the reverse order of corresponding mounts.
+  umount /data_mirror/data_ce/null/0
+  umount /data_mirror/data_ce/null
+  umount /data_mirror/data_de/null
+  umount /data_mirror/cur_profiles
+  umount /data_mirror
+  remount_userdata
+  start bootanim
+
+on userspace-reboot-resume
+  trigger userspace-reboot-fs-remount
+  trigger post-fs-data
+  trigger zygote-start
+  trigger early-boot
+  trigger boot
+
+on property:sys.boot_completed=1 && property:sys.init.userspace_reboot.in_progress=1
+  setprop sys.init.userspace_reboot.in_progress ""
diff --git a/rootdir/init.usb.rc b/rootdir/init.usb.rc
index b6cba90..27b05ec 100644
--- a/rootdir/init.usb.rc
+++ b/rootdir/init.usb.rc
@@ -9,16 +9,19 @@
     chown system system /sys/class/android_usb/android0/f_rndis/ethaddr
     chmod 0660 /sys/class/android_usb/android0/f_rndis/ethaddr
     mkdir /data/misc/adb 02750 system shell
-    mkdir /data/adb 0700 root root
+    mkdir /data/adb 0700 root root encryption=Require
 
 # adbd is controlled via property triggers in init.<platform>.usb.rc
 service adbd /system/bin/adbd --root_seclabel=u:r:su:s0
     class core
     socket adbd seqpacket 660 system system
     disabled
+    updatable
     seclabel u:r:adbd:s0
 
-on boot
+# Set default value on sys.usb.configfs early in boot sequence. It will be
+# overridden in `on boot` action of init.hardware.rc.
+on init
     setprop sys.usb.configfs 0
 
 # Used to disable USB when switching states
@@ -132,3 +135,7 @@
 on property:sys.usb.typec.power_role=sink
     write /sys/class/dual_role_usb/otg_default/power_role ${sys.usb.typec.power_role}
     setprop sys.usb.typec.state ${sys.usb.typec.power_role}
+
+on userspace-reboot-requested
+  setprop sys.usb.config ""
+  setprop sys.usb.state ""
diff --git a/rootdir/init.zygote32.rc b/rootdir/init.zygote32.rc
index bf3fb42..e827cf5 100644
--- a/rootdir/init.zygote32.rc
+++ b/rootdir/init.zygote32.rc
@@ -5,7 +5,7 @@
     group root readproc reserved_disk
     socket zygote stream 660 root system
     socket usap_pool_primary stream 660 root system
-    onrestart write /sys/android_power/request_state wake
+    onrestart exec_background - system system -- /system/bin/vdc volume abort_fuse
     onrestart write /sys/power/state on
     onrestart restart audioserver
     onrestart restart cameraserver
diff --git a/rootdir/init.zygote32_64.rc b/rootdir/init.zygote32_64.rc
index 1bab588..fe6dcfa 100644
--- a/rootdir/init.zygote32_64.rc
+++ b/rootdir/init.zygote32_64.rc
@@ -5,7 +5,7 @@
     group root readproc reserved_disk
     socket zygote stream 660 root system
     socket usap_pool_primary stream 660 root system
-    onrestart write /sys/android_power/request_state wake
+    onrestart exec_background - system system -- /system/bin/vdc volume abort_fuse
     onrestart write /sys/power/state on
     onrestart restart audioserver
     onrestart restart cameraserver
diff --git a/rootdir/init.zygote64.rc b/rootdir/init.zygote64.rc
index 6fa210a..adc7031 100644
--- a/rootdir/init.zygote64.rc
+++ b/rootdir/init.zygote64.rc
@@ -5,7 +5,7 @@
     group root readproc reserved_disk
     socket zygote stream 660 root system
     socket usap_pool_primary stream 660 root system
-    onrestart write /sys/android_power/request_state wake
+    onrestart exec_background - system system -- /system/bin/vdc volume abort_fuse
     onrestart write /sys/power/state on
     onrestart restart audioserver
     onrestart restart cameraserver
diff --git a/rootdir/init.zygote64_32.rc b/rootdir/init.zygote64_32.rc
index 48461ec..fb9e99b 100644
--- a/rootdir/init.zygote64_32.rc
+++ b/rootdir/init.zygote64_32.rc
@@ -5,14 +5,14 @@
     group root readproc reserved_disk
     socket zygote stream 660 root system
     socket usap_pool_primary stream 660 root system
-    onrestart write /sys/android_power/request_state wake
+    onrestart exec_background - system system -- /system/bin/vdc volume abort_fuse
     onrestart write /sys/power/state on
     onrestart restart audioserver
     onrestart restart cameraserver
     onrestart restart media
     onrestart restart netd
     onrestart restart wificond
-    writepid /dev/cpuset/foreground/tasks
+    task_profiles ProcessCapacityHigh MaxPerformance
 
 service zygote_secondary /system/bin/app_process32 -Xzygote /system/bin --zygote --socket-name=zygote_secondary --enable-lazy-preload
     class main
@@ -22,4 +22,4 @@
     socket zygote_secondary stream 660 root system
     socket usap_pool_secondary stream 660 root system
     onrestart restart zygote
-    writepid /dev/cpuset/foreground/tasks
+    task_profiles ProcessCapacityHigh MaxPerformance
diff --git a/rootdir/ld_config_backward_compatibility_check.py b/rootdir/ld_config_backward_compatibility_check.py
deleted file mode 100755
index 1a27578..0000000
--- a/rootdir/ld_config_backward_compatibility_check.py
+++ /dev/null
@@ -1,177 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright (C) 2018 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-import glob
-import os.path
-import re
-import sys
-
-PREBUILTS_VNDK_DIR = "prebuilts/vndk"
-VENDOR_DIRECTORIES = ('/vendor', '/odm')
-
-def find_latest_vndk_snapshot_version():
-  """Returns latest vndk snapshot version in current source tree.
-  It will skip the test if the snapshot directories are not found.
-
-  Returns:
-    latest_version: string
-  """
-  vndk_dir_list = glob.glob(PREBUILTS_VNDK_DIR + "/v*")
-  if not vndk_dir_list:
-    """Exit without error because we may have source trees that do not include
-    VNDK snapshot directories in it.
-    """
-    sys.exit(0)
-  vndk_ver_list = [re.match(r".*/v(\d+)", vndk_dir).group(1)
-                                          for vndk_dir in vndk_dir_list]
-  latest_version = max(vndk_ver_list)
-  if latest_version == '27':
-    """Exit without error because VNDK v27 is not using ld.config.txt template
-    """
-    sys.exit(0)
-  return latest_version
-
-def get_vendor_configuration(ld_config_file):
-  """Reads the ld.config.txt file to parse the namespace configurations.
-  It finds the configurations that include vendor directories.
-
-  Args:
-    ld_config_file: string, path (relative to build top) of the ld.config.txt
-                    file.
-  Returns:
-    configs: dict{string:[string]}, dictionary of namespace configurations.
-             it has 'section + property' names as keys and the directory list
-             as values.
-  """
-  try:
-    conf_file = open(ld_config_file)
-  except IOError:
-    print("error: could not read %s" % ld_config_file)
-    sys.exit(1)
-
-  configs = dict()
-  current_section = None
-
-  with conf_file:
-    for line in conf_file:
-      # ignore comments
-      found = line.find('#')
-      if found != -1:
-        line = line[:found]
-      line = line.strip()
-      if not line:
-        continue
-
-      if line[0] == '[' and line[-1] == ']':
-        # new section started
-        current_section = line[1:-1]
-        continue
-
-      if current_section == None:
-        continue
-
-      found = line.find('+=')
-      opr_len = 2
-      if found == -1:
-        found = line.find('=')
-        opr_len = 1
-      if found == -1:
-        continue
-
-      namespace = line[:found].strip()
-      if not namespace.endswith(".paths"):
-        # check ".paths" only
-        continue
-      namespace = '[' + current_section + ']' + namespace
-      values = line[found + opr_len:].strip()
-      directories = values.split(':')
-
-      for directory in directories:
-        if any(vendor_dir in directory for vendor_dir in VENDOR_DIRECTORIES):
-          if namespace in configs:
-            configs[namespace].append(directory)
-          else:
-            configs[namespace] = [directory]
-
-  return configs
-
-def get_snapshot_config(version):
-  """Finds the ld.config.{version}.txt file from the VNDK snapshot directory.
-  In the vndk prebuilt directory (prebuilts/vndk/v{version}), it searches
-  {arch}/configs/ld.config.{version}.txt file, where {arch} is one of ('arm64',
-  'arm', 'x86_64', 'x86').
-
-  Args:
-    version: string, the VNDK snapshot version to search.
-  Returns:
-    ld_config_file: string, relative path to ld.config.{version}.txt
-  """
-  arch_list = ('arm64', 'arm', 'x86_64', 'x86')
-  for arch in arch_list:
-    ld_config_file = (PREBUILTS_VNDK_DIR
-                + "/v{0}/{1}/configs/ld.config.{0}.txt".format(version, arch))
-    if os.path.isfile(ld_config_file):
-      return ld_config_file
-  print("error: cannot find ld.config.{0}.txt file in snapshot v{0}"
-                                                        .format(version))
-  sys.exit(1)
-
-def check_backward_compatibility(ld_config, vndk_snapshot_version):
-  """Checks backward compatibility for current ld.config.txt file with the
-  old ld.config.txt file. If any of the vendor directories in the old namespace
-  configurations are missing, the test will fail. It is allowed to have new
-  vendor directories in current ld.config.txt file.
-
-  Args:
-    ld_config: string, relative path to current ld.config.txt file.
-    vndk_snapshot_version: string, the VNDK snapshot version that has an old
-                           ld.config.txt file to compare.
-  Returns:
-    result: bool, True if the current configuration is backward compatible.
-  """
-  current_config = get_vendor_configuration(ld_config)
-  old_config = get_vendor_configuration(
-                                get_snapshot_config(vndk_snapshot_version))
-  for namespace in old_config:
-    if namespace not in current_config:
-      print("error: cannot find %s which was provided in ld.config.%s.txt"
-                                        % (namespace, vndk_snapshot_version))
-      return False
-    for path in old_config[namespace]:
-      if not path in current_config[namespace]:
-        print("error: %s for %s in ld.config.%s.txt are missing in %s"
-                % (path, namespace, vndk_snapshot_version, ld_config))
-        return False
-  return True
-
-def main():
-  if len(sys.argv) != 2:
-    print ("Usage: %s target_ld_config_txt_file_name" % sys.argv[0])
-    sys.exit(1)
-
-  latest_vndk_snapshot_version = find_latest_vndk_snapshot_version()
-  if not check_backward_compatibility(sys.argv[1],
-                                          latest_vndk_snapshot_version):
-    print("error: %s has backward incompatible changes to old "
-          "vendor partition." % sys.argv[1])
-    sys.exit(1)
-
-  # Current ld.config.txt file is backward compatible
-  sys.exit(0)
-
-if __name__ == '__main__':
-  main()
diff --git a/rootdir/ueventd.rc b/rootdir/ueventd.rc
index 451f5ad..9c2cdf2 100644
--- a/rootdir/ueventd.rc
+++ b/rootdir/ueventd.rc
@@ -33,7 +33,7 @@
 /dev/urandom              0666   root       root
 # Make HW RNG readable by group system to let EntropyMixer read it.
 /dev/hw_random            0440   root       system
-/dev/ashmem               0666   root       root
+/dev/ashmem*              0666   root       root
 /dev/binder               0666   root       root
 /dev/hwbinder             0666   root       root
 /dev/vndbinder            0666   root       root
diff --git a/rootdir/update_and_install_ld_config.mk b/rootdir/update_and_install_ld_config.mk
deleted file mode 100644
index 1282868..0000000
--- a/rootdir/update_and_install_ld_config.mk
+++ /dev/null
@@ -1,185 +0,0 @@
-#####################################################################
-# Builds linker config file, ld.config.txt, from the specified template
-# under $(LOCAL_PATH)/etc/*.
-#
-# Inputs:
-#   (expected to follow an include of $(BUILD_SYSTEM)/base_rules.mk)
-#   ld_config_template: template linker config file to use,
-#                       e.g. $(LOCAL_PATH)/etc/ld.config.txt
-#   vndk_version: version of the VNDK library lists used to update the
-#                 template linker config file, e.g. 28
-#   lib_list_from_prebuilts: should be set to 'true' if the VNDK library
-#                            lists should be read from /prebuilts/vndk/*
-#   libz_is_llndk: should be set to 'true' if libz must be included in
-#                  llndk and not in vndk-sp
-# Outputs:
-#   Builds and installs ld.config.$VER.txt or ld.config.vndk_lite.txt
-#####################################################################
-
-# Read inputs
-ld_config_template := $(strip $(ld_config_template))
-check_backward_compatibility := $(strip $(check_backward_compatibility))
-vndk_version := $(strip $(vndk_version))
-lib_list_from_prebuilts := $(strip $(lib_list_from_prebuilts))
-libz_is_llndk := $(strip $(libz_is_llndk))
-
-my_vndk_use_core_variant := $(TARGET_VNDK_USE_CORE_VARIANT)
-ifeq ($(lib_list_from_prebuilts),true)
-my_vndk_use_core_variant := false
-endif
-
-compatibility_check_script := \
-  $(LOCAL_PATH)/ld_config_backward_compatibility_check.py
-intermediates_dir := $(call intermediates-dir-for,ETC,$(LOCAL_MODULE))
-library_lists_dir := $(intermediates_dir)
-ifeq ($(lib_list_from_prebuilts),true)
-  library_lists_dir := prebuilts/vndk/v$(vndk_version)/$(TARGET_ARCH)/configs
-endif
-
-llndk_libraries_file := $(library_lists_dir)/llndk.libraries.$(vndk_version).txt
-vndksp_libraries_file := $(library_lists_dir)/vndksp.libraries.$(vndk_version).txt
-vndkcore_libraries_file := $(library_lists_dir)/vndkcore.libraries.txt
-vndkprivate_libraries_file := $(library_lists_dir)/vndkprivate.libraries.txt
-ifeq ($(my_vndk_use_core_variant),true)
-vndk_using_core_variant_libraries_file := $(library_lists_dir)/vndk_using_core_variant.libraries.$(vndk_version).txt
-endif
-
-sanitizer_runtime_libraries := $(call normalize-path-list,$(addsuffix .so,\
-  $(ADDRESS_SANITIZER_RUNTIME_LIBRARY) \
-  $(HWADDRESS_SANITIZER_RUNTIME_LIBRARY) \
-  $(UBSAN_RUNTIME_LIBRARY) \
-  $(TSAN_RUNTIME_LIBRARY) \
-  $(2ND_ADDRESS_SANITIZER_RUNTIME_LIBRARY) \
-  $(2ND_HWADDRESS_SANITIZER_RUNTIME_LIBRARY) \
-  $(2ND_UBSAN_RUNTIME_LIBRARY) \
-  $(2ND_TSAN_RUNTIME_LIBRARY)))
-# If BOARD_VNDK_VERSION is not defined, VNDK version suffix will not be used.
-vndk_version_suffix := $(if $(vndk_version),-$(vndk_version))
-
-ifneq ($(lib_list_from_prebuilts),true)
-ifeq ($(libz_is_llndk),true)
-  llndk_libraries_list := $(LLNDK_LIBRARIES) libz
-  vndksp_libraries_list := $(filter-out libz,$(VNDK_SAMEPROCESS_LIBRARIES))
-else
-  llndk_libraries_list := $(LLNDK_LIBRARIES)
-  vndksp_libraries_list := $(VNDK_SAMEPROCESS_LIBRARIES)
-endif
-
-# $(1): list of libraries
-# $(2): output file to write the list of libraries to
-define write-libs-to-file
-$(2): PRIVATE_LIBRARIES := $(1)
-$(2):
-	echo -n > $$@ && $$(foreach lib,$$(PRIVATE_LIBRARIES),echo $$(lib).so >> $$@;)
-endef
-$(eval $(call write-libs-to-file,$(llndk_libraries_list),$(llndk_libraries_file)))
-$(eval $(call write-libs-to-file,$(vndksp_libraries_list),$(vndksp_libraries_file)))
-$(eval $(call write-libs-to-file,$(VNDK_CORE_LIBRARIES),$(vndkcore_libraries_file)))
-$(eval $(call write-libs-to-file,$(VNDK_PRIVATE_LIBRARIES),$(vndkprivate_libraries_file)))
-ifeq ($(my_vndk_use_core_variant),true)
-$(eval $(call write-libs-to-file,$(VNDK_USING_CORE_VARIANT_LIBRARIES),$(vndk_using_core_variant_libraries_file)))
-endif
-endif # ifneq ($(lib_list_from_prebuilts),true)
-
-# Given a file with a list of libs, filter-out the VNDK private libraries
-# and write resulting list to a new file in "a:b:c" format
-#
-# $(1): libs file from which to filter-out VNDK private libraries
-# $(2): output file with the filtered list of lib names
-$(LOCAL_BUILT_MODULE): private-filter-out-private-libs = \
-  paste -sd ":" $(1) > $(2) && \
-  while read -r privatelib; do sed -i.bak "s/$$privatelib//" $(2) ; done < $(PRIVATE_VNDK_PRIVATE_LIBRARIES_FILE) && \
-  sed -i.bak -e 's/::\+/:/g ; s/^:\+// ; s/:\+$$//' $(2) && \
-  rm -f $(2).bak
-$(LOCAL_BUILT_MODULE): PRIVATE_LLNDK_LIBRARIES_FILE := $(llndk_libraries_file)
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_SP_LIBRARIES_FILE := $(vndksp_libraries_file)
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_CORE_LIBRARIES_FILE := $(vndkcore_libraries_file)
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_PRIVATE_LIBRARIES_FILE := $(vndkprivate_libraries_file)
-$(LOCAL_BUILT_MODULE): PRIVATE_SANITIZER_RUNTIME_LIBRARIES := $(sanitizer_runtime_libraries)
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_VERSION_SUFFIX := $(vndk_version_suffix)
-$(LOCAL_BUILT_MODULE): PRIVATE_INTERMEDIATES_DIR := $(intermediates_dir)
-$(LOCAL_BUILT_MODULE): PRIVATE_COMP_CHECK_SCRIPT := $(compatibility_check_script)
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_VERSION_TAG := \#VNDK$(vndk_version)\#
-deps := $(llndk_libraries_file) $(vndksp_libraries_file) $(vndkcore_libraries_file) \
-  $(vndkprivate_libraries_file)
-ifeq ($(check_backward_compatibility),true)
-deps += $(compatibility_check_script)
-endif
-ifeq ($(my_vndk_use_core_variant),true)
-$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_USING_CORE_VARIANT_LIBRARIES_FILE := $(vndk_using_core_variant_libraries_file)
-deps += $(vndk_using_core_variant_libraries_file)
-endif
-
-$(LOCAL_BUILT_MODULE): $(ld_config_template) $(deps)
-	@echo "Generate: $< -> $@"
-ifeq ($(check_backward_compatibility),true)
-	@echo "Checking backward compatibility..."
-	$(hide) $(PRIVATE_COMP_CHECK_SCRIPT) $<
-endif
-	@mkdir -p $(dir $@)
-	$(call private-filter-out-private-libs,$(PRIVATE_LLNDK_LIBRARIES_FILE),$(PRIVATE_INTERMEDIATES_DIR)/llndk_filtered)
-	$(hide) sed -e "s?%LLNDK_LIBRARIES%?$$(cat $(PRIVATE_INTERMEDIATES_DIR)/llndk_filtered)?g" $< >$@
-	$(call private-filter-out-private-libs,$(PRIVATE_VNDK_SP_LIBRARIES_FILE),$(PRIVATE_INTERMEDIATES_DIR)/vndksp_filtered)
-	$(hide) sed -i.bak -e "s?%VNDK_SAMEPROCESS_LIBRARIES%?$$(cat $(PRIVATE_INTERMEDIATES_DIR)/vndksp_filtered)?g" $@
-	$(call private-filter-out-private-libs,$(PRIVATE_VNDK_CORE_LIBRARIES_FILE),$(PRIVATE_INTERMEDIATES_DIR)/vndkcore_filtered)
-	$(hide) sed -i.bak -e "s?%VNDK_CORE_LIBRARIES%?$$(cat $(PRIVATE_INTERMEDIATES_DIR)/vndkcore_filtered)?g" $@
-
-ifeq ($(my_vndk_use_core_variant),true)
-	$(call private-filter-out-private-libs,$(PRIVATE_VNDK_USING_CORE_VARIANT_LIBRARIES_FILE),$(PRIVATE_INTERMEDIATES_DIR)/vndk_using_core_variant_filtered)
-	$(hide) sed -i.bak -e "s?%VNDK_IN_SYSTEM_NS%?,vndk_in_system?g" $@
-	$(hide) sed -i.bak -e "s?%VNDK_USING_CORE_VARIANT_LIBRARIES%?$$(cat $(PRIVATE_INTERMEDIATES_DIR)/vndk_using_core_variant_filtered)?g" $@
-else
-	$(hide) sed -i.bak -e "s?%VNDK_IN_SYSTEM_NS%??g" $@
-	# Unlike LLNDK or VNDK-SP, VNDK_USING_CORE_VARIANT_LIBRARIES can be nothing
-	# if TARGET_VNDK_USE_CORE_VARIANT is not set.  In this case, we need to remove
-	# the entire line in the linker config so that we are not left with a line
-	# like:
-	#   namespace.vndk.link.vndk_in_system.shared_libs =
-	$(hide) sed -i.bak -e 's?^.*= %VNDK_USING_CORE_VARIANT_LIBRARIES%$$??' $@
-endif
-
-	$(hide) echo -n > $(PRIVATE_INTERMEDIATES_DIR)/private_llndk && \
-	while read -r privatelib; \
-	do (grep $$privatelib $(PRIVATE_LLNDK_LIBRARIES_FILE) || true) >> $(PRIVATE_INTERMEDIATES_DIR)/private_llndk ; \
-	done < $(PRIVATE_VNDK_PRIVATE_LIBRARIES_FILE) && \
-	paste -sd ":" $(PRIVATE_INTERMEDIATES_DIR)/private_llndk | \
-	sed -i.bak -e "s?%PRIVATE_LLNDK_LIBRARIES%?$$(cat -)?g" $@
-
-	$(hide) sed -i.bak -e "s?%SANITIZER_RUNTIME_LIBRARIES%?$(PRIVATE_SANITIZER_RUNTIME_LIBRARIES)?g" $@
-	$(hide) sed -i.bak -e "s?%VNDK_VER%?$(PRIVATE_VNDK_VERSION_SUFFIX)?g" $@
-	$(hide) sed -i.bak -e "s?%PRODUCT%?$(TARGET_COPY_OUT_PRODUCT)?g" $@
-ifeq ($(TARGET_COPY_OUT_PRODUCT),$(TARGET_COPY_OUT_PRODUCT_SERVICES))
-	# Remove lines containing %PRODUCT_SERVICES% (identical to the %PRODUCT% ones)
-	$(hide) sed -i.bak -e "\?%PRODUCT_SERVICES%?d" $@
-else
-	$(hide) sed -i.bak -e "s?%PRODUCT_SERVICES%?$(TARGET_COPY_OUT_PRODUCT_SERVICES)?g" $@
-endif
-	$(hide) sed -i.bak -e "s?^$(PRIVATE_VNDK_VERSION_TAG)??g" $@
-	$(hide) sed -i.bak "/^\#VNDK[0-9]\{2\}\#.*$$/d" $@
-	$(hide) rm -f $@.bak
-
-ld_config_template :=
-check_backward_compatibility :=
-vndk_version :=
-lib_list_from_prebuilts :=
-libz_is_llndk :=
-compatibility_check_script :=
-intermediates_dir :=
-library_lists_dir :=
-llndk_libraries_file :=
-vndksp_libraries_file :=
-vndkcore_libraries_file :=
-vndkprivate_libraries_file :=
-deps :=
-sanitizer_runtime_libraries :=
-vndk_version_suffix :=
-llndk_libraries_list :=
-vndksp_libraries_list :=
-write-libs-to-file :=
-
-ifeq ($(my_vndk_use_core_variant),true)
-vndk_using_core_variant_libraries_file :=
-vndk_using_core_variant_libraries_list :=
-endif
-
-my_vndk_use_core_variant :=
diff --git a/sdcard/sdcard.cpp b/sdcard/sdcard.cpp
index 2b35819..622de5b 100644
--- a/sdcard/sdcard.cpp
+++ b/sdcard/sdcard.cpp
@@ -315,7 +315,8 @@
         PLOG(ERROR) << "setting RLIMIT_NOFILE failed";
     }
 
-    while ((fs_read_atomic_int("/data/.layout_version", &fs_version) == -1) || (fs_version < 3)) {
+    while ((fs_read_atomic_int("/data/misc/installd/layout_version", &fs_version) == -1) ||
+           (fs_version < 3)) {
         LOG(ERROR) << "installd fs upgrade not yet complete; waiting...";
         sleep(1);
     }
diff --git a/demangle/.clang-format b/set-verity-state/.clang-format
similarity index 100%
copy from demangle/.clang-format
copy to set-verity-state/.clang-format
diff --git a/set-verity-state/Android.bp b/set-verity-state/Android.bp
new file mode 100644
index 0000000..da112c9
--- /dev/null
+++ b/set-verity-state/Android.bp
@@ -0,0 +1,25 @@
+// Copyright 2019 The Android Open Source Project
+
+cc_binary {
+    name: "set-verity-state",
+    srcs: ["set-verity-state.cpp"],
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libcrypto_utils",
+        "libcutils",
+        "libfec",
+        "libfs_mgr_binder",
+        "liblog",
+        "libutils",
+    ],
+    static_libs: [
+        "libavb_user",
+    ],
+
+    cflags: ["-Werror"],
+    symlinks: [
+        "enable-verity",
+        "disable-verity",
+    ],
+}
diff --git a/set-verity-state/set-verity-state.cpp b/set-verity-state/set-verity-state.cpp
new file mode 100644
index 0000000..0a26aba
--- /dev/null
+++ b/set-verity-state/set-verity-state.cpp
@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <libavb_user/libavb_user.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/stringprintf.h>
+#include <android-base/unique_fd.h>
+#include <fs_mgr.h>
+#include <fs_mgr_overlayfs.h>
+#include <fstab/fstab.h>
+#include <log/log_properties.h>
+
+#include "fec/io.h"
+
+#ifdef ALLOW_DISABLE_VERITY
+static const bool kAllowDisableVerity = true;
+#else
+static const bool kAllowDisableVerity = false;
+#endif
+
+using android::base::unique_fd;
+
+static void suggest_run_adb_root() {
+  if (getuid() != 0) printf("Maybe run adb root?\n");
+}
+
+static bool make_block_device_writable(const std::string& dev) {
+  unique_fd fd(open(dev.c_str(), O_RDONLY | O_CLOEXEC));
+  if (fd == -1) {
+    return false;
+  }
+
+  int OFF = 0;
+  bool result = (ioctl(fd.get(), BLKROSET, &OFF) != -1);
+  return result;
+}
+
+/* Turn verity on/off */
+static bool set_verity_enabled_state(const char* block_device, const char* mount_point,
+                                     bool enable) {
+  if (!make_block_device_writable(block_device)) {
+    printf("Could not make block device %s writable (%s).\n", block_device, strerror(errno));
+    return false;
+  }
+
+  fec::io fh(block_device, O_RDWR);
+
+  if (!fh) {
+    printf("Could not open block device %s (%s).\n", block_device, strerror(errno));
+    suggest_run_adb_root();
+    return false;
+  }
+
+  fec_verity_metadata metadata;
+
+  if (!fh.get_verity_metadata(metadata)) {
+    printf("Couldn't find verity metadata!\n");
+    return false;
+  }
+
+  if (!enable && metadata.disabled) {
+    printf("Verity already disabled on %s\n", mount_point);
+    return false;
+  }
+
+  if (enable && !metadata.disabled) {
+    printf("Verity already enabled on %s\n", mount_point);
+    return false;
+  }
+
+  if (!fh.set_verity_status(enable)) {
+    printf("Could not set verity %s flag on device %s with error %s\n",
+           enable ? "enabled" : "disabled", block_device, strerror(errno));
+    return false;
+  }
+
+  auto change = false;
+  errno = 0;
+  if (enable ? fs_mgr_overlayfs_teardown(mount_point, &change)
+             : fs_mgr_overlayfs_setup(nullptr, mount_point, &change)) {
+    if (change) {
+      printf("%s overlayfs for %s\n", enable ? "disabling" : "using", mount_point);
+    }
+  } else if (errno) {
+    int expected_errno = enable ? EBUSY : ENOENT;
+    if (errno != expected_errno) {
+      printf("Overlayfs %s for %s failed with error %s\n", enable ? "teardown" : "setup",
+             mount_point, strerror(errno));
+    }
+  }
+  printf("Verity %s on %s\n", enable ? "enabled" : "disabled", mount_point);
+  return true;
+}
+
+/* Helper function to get A/B suffix, if any. If the device isn't
+ * using A/B the empty string is returned. Otherwise either "_a",
+ * "_b", ... is returned.
+ */
+static std::string get_ab_suffix() {
+  return android::base::GetProperty("ro.boot.slot_suffix", "");
+}
+
+static bool is_avb_device_locked() {
+  return android::base::GetProperty("ro.boot.vbmeta.device_state", "") == "locked";
+}
+
+static bool overlayfs_setup(bool enable) {
+  auto change = false;
+  errno = 0;
+  if (enable ? fs_mgr_overlayfs_teardown(nullptr, &change)
+             : fs_mgr_overlayfs_setup(nullptr, nullptr, &change)) {
+    if (change) {
+      printf("%s overlayfs\n", enable ? "disabling" : "using");
+    }
+  } else if (errno) {
+    printf("Overlayfs %s failed with error %s\n", enable ? "teardown" : "setup", strerror(errno));
+    suggest_run_adb_root();
+  }
+  return change;
+}
+
+/* Use AVB to turn verity on/off */
+static bool set_avb_verity_enabled_state(AvbOps* ops, bool enable_verity) {
+  std::string ab_suffix = get_ab_suffix();
+  bool verity_enabled;
+
+  if (is_avb_device_locked()) {
+    printf("Device is locked. Please unlock the device first\n");
+    return false;
+  }
+
+  if (!avb_user_verity_get(ops, ab_suffix.c_str(), &verity_enabled)) {
+    printf("Error getting verity state. Try adb root first?\n");
+    return false;
+  }
+
+  if ((verity_enabled && enable_verity) || (!verity_enabled && !enable_verity)) {
+    printf("verity is already %s\n", verity_enabled ? "enabled" : "disabled");
+    return false;
+  }
+
+  if (!avb_user_verity_set(ops, ab_suffix.c_str(), enable_verity)) {
+    printf("Error setting verity\n");
+    return false;
+  }
+
+  overlayfs_setup(enable_verity);
+  printf("Successfully %s verity\n", enable_verity ? "enabled" : "disabled");
+  return true;
+}
+
+int main(int argc, char* argv[]) {
+  if (argc == 0) {
+    LOG(FATAL) << "set-verity-state called with empty argv";
+  }
+
+  std::optional<bool> enable_opt;
+  std::string procname = android::base::Basename(argv[0]);
+  if (procname == "enable-verity") {
+    enable_opt = true;
+  } else if (procname == "disable-verity") {
+    enable_opt = false;
+  }
+
+  if (!enable_opt.has_value()) {
+    if (argc != 2) {
+      printf("usage: %s [1|0]\n", argv[0]);
+      return 1;
+    }
+
+    if (strcmp(argv[1], "1") == 0) {
+      enable_opt = true;
+    } else if (strcmp(argv[1], "0") == 0) {
+      enable_opt = false;
+    } else {
+      printf("usage: %s [1|0]\n", argv[0]);
+      return 1;
+    }
+  }
+
+  bool enable = enable_opt.value();
+
+  bool any_changed = false;
+
+  // Figure out if we're using VB1.0 or VB2.0 (aka AVB) - by
+  // contract, androidboot.vbmeta.digest is set by the bootloader
+  // when using AVB).
+  bool using_avb = !android::base::GetProperty("ro.boot.vbmeta.digest", "").empty();
+
+  // If using AVB, dm-verity is used on any build so we want it to
+  // be possible to disable/enable on any build (except USER). For
+  // VB1.0 dm-verity is only enabled on certain builds.
+  if (!using_avb) {
+    if (!kAllowDisableVerity) {
+      printf("%s only works for userdebug builds\n", argv[0]);
+    }
+
+    if (!android::base::GetBoolProperty("ro.secure", false)) {
+      overlayfs_setup(enable);
+      printf("verity not enabled - ENG build\n");
+      return 0;
+    }
+  }
+
+  // Should never be possible to disable dm-verity on a USER build
+  // regardless of using AVB or VB1.0.
+  if (!__android_log_is_debuggable()) {
+    printf("verity cannot be disabled/enabled - USER build\n");
+    return 0;
+  }
+
+  if (using_avb) {
+    // Yep, the system is using AVB.
+    AvbOps* ops = avb_ops_user_new();
+    if (ops == nullptr) {
+      printf("Error getting AVB ops\n");
+      return 1;
+    }
+    if (set_avb_verity_enabled_state(ops, enable)) {
+      any_changed = true;
+    }
+    avb_ops_user_free(ops);
+  } else {
+    // Not using AVB - assume VB1.0.
+
+    // read all fstab entries at once from all sources
+    android::fs_mgr::Fstab fstab;
+    if (!android::fs_mgr::ReadDefaultFstab(&fstab)) {
+      printf("Failed to read fstab\n");
+      suggest_run_adb_root();
+      return 0;
+    }
+
+    // Loop through entries looking for ones that verity manages.
+    for (const auto& entry : fstab) {
+      if (entry.fs_mgr_flags.verify) {
+        if (set_verity_enabled_state(entry.blk_device.c_str(), entry.mount_point.c_str(), enable)) {
+          any_changed = true;
+        }
+      }
+    }
+  }
+  if (!any_changed) any_changed = overlayfs_setup(enable);
+
+  if (any_changed) {
+    printf("Now reboot your device for settings to take effect\n");
+  }
+
+  return 0;
+}
diff --git a/shell_and_utilities/Android.bp b/shell_and_utilities/Android.bp
index 3bc3883..b5a5fb6 100644
--- a/shell_and_utilities/Android.bp
+++ b/shell_and_utilities/Android.bp
@@ -12,8 +12,9 @@
     required: [
         "auditctl",
         "awk",
+        "bc",
         "bzip2",
-        "grep",
+        "ldd",
         "logwrapper",
         "mini-keyctl",
         "mkshrc",
@@ -25,14 +26,13 @@
         "tcpdump",
         "toolbox",
         "toybox",
-        "unzip",
+        "ziptool",
     ],
 }
 
 phony {
     name: "shell_and_utilities_recovery",
     required: [
-        "grep.recovery",
         "sh.recovery",
         "toolbox.recovery",
         "toybox.recovery",
@@ -44,7 +44,6 @@
     name: "shell_and_utilities_vendor",
     required: [
         "awk_vendor",
-        "grep_vendor",
         "logwrapper_vendor",
         "mkshrc_vendor",
         "sh_vendor",
diff --git a/shell_and_utilities/README.md b/shell_and_utilities/README.md
index ffda3a5..3bee875 100644
--- a/shell_and_utilities/README.md
+++ b/shell_and_utilities/README.md
@@ -211,3 +211,35 @@
 true truncate tty tunctl ulimit umount uname uniq unix2dos unlink
 unshare uptime usleep uudecode uuencode uuidgen vconfig vmstat watch
 wc which whoami xargs xxd yes zcat
+
+## Android R
+
+BSD: fsck\_msdos newfs\_msdos
+
+bzip2: bzcat bzip2 bunzip2
+
+gavinhoward/bc: bc
+
+one-true-awk: awk
+
+toolbox: getevent getprop setprop start stop
+
+toybox: acpi base64 basename blkid blockdev cal cat chattr chcon chgrp chmod
+chown chroot chrt cksum clear cmp comm cp cpio cut date dd devmem
+df diff dirname dmesg dos2unix du echo egrep env expand expr fallocate
+false fgrep file find flock fmt free freeramdisk fsfreeze fsync getconf
+getenforce getfattr getopt grep groups gunzip gzip head help hostname
+hwclock i2cdetect i2cdump i2cget i2cset iconv id ifconfig inotifyd
+insmod install ionice iorenice iotop kill killall ln load\_policy log
+logname losetup ls lsattr lsmod lsof lspci lsusb makedevs md5sum microcom
+mkdir mkfifo mknod mkswap mktemp modinfo modprobe more mount mountpoint
+mv nbd-client nc netcat netstat nice nl nohup nproc nsenter od partprobe
+paste patch pgrep pidof ping ping6 pivot\_root pkill pmap printenv
+printf prlimit ps pwd pwdx readelf readlink realpath renice restorecon
+rev rfkill rm rmdir rmmod runcon sed sendevent seq setenforce setfattr
+setsid sha1sum sha224sum sha256sum sha384sum sha512sum sleep sort
+split stat strings stty swapoff swapon sync sysctl tac tail tar taskset
+tee time timeout top touch tr traceroute traceroute6 true truncate
+tty tunctl ulimit umount uname uniq unix2dos unlink unshare uptime
+usleep uudecode uuencode uuidgen vconfig vi vmstat watch wc which
+whoami xargs xxd yes zcat
diff --git a/storaged/Android.bp b/storaged/Android.bp
index 733b60f..cc19481 100644
--- a/storaged/Android.bp
+++ b/storaged/Android.bp
@@ -24,8 +24,6 @@
         "libbinder",
         "libcutils",
         "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
         "liblog",
         "libprotobuf-cpp-lite",
         "libsysutils",
diff --git a/storaged/main.cpp b/storaged/main.cpp
index 3817fb5..bbed210 100644
--- a/storaged/main.cpp
+++ b/storaged/main.cpp
@@ -46,12 +46,7 @@
 
 // Function of storaged's main thread
 void* storaged_main(void* /* unused */) {
-    storaged_sp = new storaged_t();
-
-    storaged_sp->init();
-    storaged_sp->report_storage_info();
-
-    LOG_TO(SYSTEM, INFO) << "storaged: Start";
+    LOG(INFO) << "storaged: Start";
 
     for (;;) {
         storaged_sp->event_checked();
@@ -76,6 +71,9 @@
     bool flag_dump_perf = false;
     int opt;
 
+    signal(SIGPIPE, SIG_IGN);
+    android::base::InitLogging(argv, android::base::LogdLogger(android::base::SYSTEM));
+
     for (;;) {
         int opt_idx = 0;
         static struct option long_options[] = {
@@ -121,16 +119,19 @@
 
     if (flag_main_service) { // start main thread
         // Start the main thread of storaged
+        storaged_sp = new storaged_t();
+        storaged_sp->init();
+        storaged_sp->report_storage_info();
         pthread_t storaged_main_thread;
         errno = pthread_create(&storaged_main_thread, NULL, storaged_main, NULL);
         if (errno != 0) {
-            PLOG_TO(SYSTEM, ERROR) << "Failed to create main thread";
+            PLOG(ERROR) << "Failed to create main thread";
             return -1;
         }
 
         if (StoragedService::start() != android::OK ||
             StoragedPrivateService::start() != android::OK) {
-            PLOG_TO(SYSTEM, ERROR) << "Failed to start storaged service";
+            PLOG(ERROR) << "Failed to start storaged service";
             return -1;
         }
 
diff --git a/storaged/storaged.cpp b/storaged/storaged.cpp
index 3e0f70d..b7aa89f 100644
--- a/storaged/storaged.cpp
+++ b/storaged/storaged.cpp
@@ -97,25 +97,23 @@
 
     health = get_health_service();
     if (health == NULL) {
-        LOG_TO(SYSTEM, WARNING) << "health: failed to find IHealth service";
+        LOG(WARNING) << "health: failed to find IHealth service";
         return;
     }
 
     BatteryStatus status = BatteryStatus::UNKNOWN;
     auto ret = health->getChargeStatus([&](Result r, BatteryStatus v) {
         if (r != Result::SUCCESS) {
-            LOG_TO(SYSTEM, WARNING)
-                << "health: cannot get battery status " << toString(r);
+            LOG(WARNING) << "health: cannot get battery status " << toString(r);
             return;
         }
         if (v == BatteryStatus::UNKNOWN) {
-            LOG_TO(SYSTEM, WARNING) << "health: invalid battery status";
+            LOG(WARNING) << "health: invalid battery status";
         }
         status = v;
     });
     if (!ret.isOk()) {
-        LOG_TO(SYSTEM, WARNING) << "health: get charge status transaction error "
-            << ret.description();
+        LOG(WARNING) << "health: get charge status transaction error " << ret.description();
     }
 
     mUidm.init(is_charger_on(status));
@@ -126,11 +124,11 @@
 
 void storaged_t::serviceDied(uint64_t cookie, const wp<::android::hidl::base::V1_0::IBase>& who) {
     if (health != NULL && interfacesEqual(health, who.promote())) {
-        LOG_TO(SYSTEM, ERROR) << "health service died, exiting";
+        LOG(ERROR) << "health service died, exiting";
         android::hardware::IPCThreadState::self()->stopProcess();
         exit(1);
     } else {
-        LOG_TO(SYSTEM, ERROR) << "unknown service died";
+        LOG(ERROR) << "unknown service died";
     }
 }
 
@@ -196,7 +194,7 @@
         reinterpret_cast<const Bytef*>(uid_io_usage.SerializeAsString().c_str()),
         uid_io_usage.ByteSize());
     if (proto.crc() != computed_crc) {
-        LOG_TO(SYSTEM, WARNING) << "CRC mismatch in " << proto_file;
+        LOG(WARNING) << "CRC mismatch in " << proto_file;
         return;
     }
 
@@ -232,8 +230,7 @@
     char* data = nullptr;
     if (posix_memalign(reinterpret_cast<void**>(&data),
                        pagesize, proto->ByteSize())) {
-        PLOG_TO(SYSTEM, ERROR) << "Faied to alloc aligned buffer (size: "
-                               << proto->ByteSize() << ")";
+        PLOG(ERROR) << "Faied to alloc aligned buffer (size: " << proto->ByteSize() << ")";
         return data;
     }
 
@@ -250,7 +247,7 @@
                     (user_id == USER_SYSTEM ? O_DIRECT : 0),
                  S_IRUSR | S_IWUSR)));
     if (fd == -1) {
-        PLOG_TO(SYSTEM, ERROR) << "Faied to open tmp file: " << tmp_file;
+        PLOG(ERROR) << "Faied to open tmp file: " << tmp_file;
         return;
     }
 
@@ -265,7 +262,7 @@
             start = steady_clock::now();
             ret = write(fd, data, MIN(benchmark_unit_size, size));
             if (ret <= 0) {
-                PLOG_TO(SYSTEM, ERROR) << "Faied to write tmp file: " << tmp_file;
+                PLOG(ERROR) << "Faied to write tmp file: " << tmp_file;
                 return;
             }
             end = steady_clock::now();
@@ -288,7 +285,7 @@
         }
     } else {
         if (!WriteFully(fd, data, size)) {
-            PLOG_TO(SYSTEM, ERROR) << "Faied to write tmp file: " << tmp_file;
+            PLOG(ERROR) << "Faied to write tmp file: " << tmp_file;
             return;
         }
     }
@@ -349,22 +346,21 @@
     if (mConfig.event_time_check_usec &&
         clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &start_ts) < 0) {
         check_time = false;
-        PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
+        PLOG(ERROR) << "clock_gettime() failed";
     }
 
     event();
 
     if (mConfig.event_time_check_usec && check_time) {
         if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &end_ts) < 0) {
-            PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
+            PLOG(ERROR) << "clock_gettime() failed";
             return;
         }
         int64_t cost = (end_ts.tv_sec - start_ts.tv_sec) * SEC_TO_USEC +
                        (end_ts.tv_nsec - start_ts.tv_nsec) / USEC_TO_NSEC;
         if (cost > mConfig.event_time_check_usec) {
-            LOG_TO(SYSTEM, ERROR)
-                << "event loop spent " << cost << " usec, threshold "
-                << mConfig.event_time_check_usec << " usec";
+            LOG(ERROR) << "event loop spent " << cost << " usec, threshold "
+                       << mConfig.event_time_check_usec << " usec";
         }
     }
 }
diff --git a/storaged/storaged_diskstats.cpp b/storaged/storaged_diskstats.cpp
index 8b5001d..52bd4e0 100644
--- a/storaged/storaged_diskstats.cpp
+++ b/storaged/storaged_diskstats.cpp
@@ -41,8 +41,8 @@
     // skip if the input structure are all zeros
     if (perf == NULL || perf->is_zero()) return;
 
-    LOG_TO(SYSTEM, INFO) << "disk_perf " << type
-              << " rd: " << perf->read_perf << " kbps, " << perf->read_ios << " iops"
+    LOG(INFO) << "disk_perf " << type << " rd: " << perf->read_perf << " kbps, " << perf->read_ios
+              << " iops"
               << " wr: " << perf->write_perf << " kbps, " << perf->write_ios << " iops"
               << " q: " << perf->queue;
 }
@@ -71,7 +71,7 @@
     // when system is running.
     int ret = clock_gettime(CLOCK_MONOTONIC, ts);
     if (ret < 0) {
-        PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
+        PLOG(ERROR) << "clock_gettime() failed";
         return false;
     }
     return true;
@@ -93,7 +93,7 @@
 
     std::string buffer;
     if (!android::base::ReadFileToString(disk_stats_path, &buffer)) {
-        PLOG_TO(SYSTEM, ERROR) << disk_stats_path << ": ReadFileToString failed.";
+        PLOG(ERROR) << disk_stats_path << ": ReadFileToString failed.";
         return false;
     }
 
@@ -130,12 +130,12 @@
     bool success = false;
     auto ret = service->getDiskStats([&success, stats](auto result, const auto& halStats) {
         if (result == Result::NOT_SUPPORTED) {
-            LOG_TO(SYSTEM, DEBUG) << "getDiskStats is not supported on health HAL.";
+            LOG(DEBUG) << "getDiskStats is not supported on health HAL.";
             return;
         }
         if (result != Result::SUCCESS || halStats.size() == 0) {
-            LOG_TO(SYSTEM, ERROR) << "getDiskStats failed with result " << toString(result)
-                                  << " and size " << halStats.size();
+            LOG(ERROR) << "getDiskStats failed with result " << toString(result) << " and size "
+                       << halStats.size();
             return;
         }
 
@@ -144,7 +144,7 @@
     });
 
     if (!ret.isOk()) {
-        LOG_TO(SYSTEM, ERROR) << "getDiskStats failed with " << ret.description();
+        LOG(ERROR) << "getDiskStats failed with " << ret.description();
         return false;
     }
 
@@ -199,9 +199,9 @@
 void add_disk_stats(struct disk_stats* src, struct disk_stats* dst)
 {
     if (dst->end_time != 0 && dst->end_time != src->start_time) {
-        LOG_TO(SYSTEM, WARNING) << "Two dis-continuous periods of diskstats"
-            << " are added. dst end with " << dst->end_time
-            << ", src start with " << src->start_time;
+        LOG(WARNING) << "Two dis-continuous periods of diskstats"
+                     << " are added. dst end with " << dst->end_time << ", src start with "
+                     << src->start_time;
     }
 
     *dst += *src;
diff --git a/storaged/storaged_info.cpp b/storaged/storaged_info.cpp
index ca2421b..bb21829 100644
--- a/storaged/storaged_info.cpp
+++ b/storaged/storaged_info.cpp
@@ -41,7 +41,6 @@
 using android::hardware::health::V2_0::StorageInfo;
 
 const string emmc_info_t::emmc_sysfs = "/sys/bus/mmc/devices/mmc0:0001/";
-const string emmc_info_t::emmc_debugfs = "/d/mmc0/mmc0:0001/ext_csd";
 const char* emmc_info_t::emmc_ver_str[9] = {
     "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0", "5.1"
 };
@@ -62,10 +61,8 @@
     if (healthService != nullptr) {
         return new health_storage_info_t(healthService);
     }
-    if (FileExists(emmc_info_t::emmc_sysfs) ||
-        FileExists(emmc_info_t::emmc_debugfs)) {
-        return new emmc_info_t;
-    }
+    if (FileExists(emmc_info_t::emmc_sysfs)) return new emmc_info_t;
+
     if (FileExists(ufs_info_t::health_file)) {
         return new ufs_info_t;
     }
@@ -79,7 +76,7 @@
     if (!perf_history.has_day_start_sec() ||
         perf_history.daily_perf_size() > (int)daily_perf.size() ||
         perf_history.weekly_perf_size() > (int)weekly_perf.size()) {
-        LOG_TO(SYSTEM, ERROR) << "Invalid IOPerfHistory proto";
+        LOG(ERROR) << "Invalid IOPerfHistory proto";
         return;
     }
 
@@ -117,7 +114,7 @@
 {
     struct statvfs buf;
     if (statvfs(userdata_path.c_str(), &buf) != 0) {
-        PLOG_TO(SYSTEM, WARNING) << "Failed to get userdata info";
+        PLOG(WARNING) << "Failed to get userdata info";
         return;
     }
 
@@ -241,8 +238,7 @@
 
 void emmc_info_t::report()
 {
-    if (!report_sysfs() && !report_debugfs())
-        return;
+    if (!report_sysfs()) return;
 
     publish();
 }
@@ -284,54 +280,6 @@
     return true;
 }
 
-namespace {
-
-const size_t EXT_CSD_FILE_MIN_SIZE = 1024;
-/* 2 characters in string for each byte */
-const size_t EXT_CSD_REV_IDX = 192 * 2;
-const size_t EXT_PRE_EOL_INFO_IDX = 267 * 2;
-const size_t EXT_DEVICE_LIFE_TIME_EST_A_IDX = 268 * 2;
-const size_t EXT_DEVICE_LIFE_TIME_EST_B_IDX = 269 * 2;
-
-} // namespace
-
-bool emmc_info_t::report_debugfs()
-{
-    string buffer;
-    uint16_t rev = 0;
-
-    if (!ReadFileToString(emmc_debugfs, &buffer) ||
-        buffer.length() < (size_t)EXT_CSD_FILE_MIN_SIZE) {
-        return false;
-    }
-
-    string str = buffer.substr(EXT_CSD_REV_IDX, 2);
-    if (!ParseUint(str, &rev) ||
-        rev < 7 || rev > ARRAY_SIZE(emmc_ver_str)) {
-        return false;
-    }
-
-    version = "emmc ";
-    version += emmc_ver_str[rev];
-
-    str = buffer.substr(EXT_PRE_EOL_INFO_IDX, 2);
-    if (!ParseUint(str, &eol)) {
-        return false;
-    }
-
-    str = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_A_IDX, 2);
-    if (!ParseUint(str, &lifetime_a)) {
-        return false;
-    }
-
-    str = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_B_IDX, 2);
-    if (!ParseUint(str, &lifetime_b)) {
-        return false;
-    }
-
-    return true;
-}
-
 void ufs_info_t::report()
 {
     string buffer;
@@ -380,12 +328,12 @@
 void health_storage_info_t::report() {
     auto ret = mHealth->getStorageInfo([this](auto result, const auto& halInfos) {
         if (result == Result::NOT_SUPPORTED) {
-            LOG_TO(SYSTEM, DEBUG) << "getStorageInfo is not supported on health HAL.";
+            LOG(DEBUG) << "getStorageInfo is not supported on health HAL.";
             return;
         }
         if (result != Result::SUCCESS || halInfos.size() == 0) {
-            LOG_TO(SYSTEM, ERROR) << "getStorageInfo failed with result " << toString(result)
-                                  << " and size " << halInfos.size();
+            LOG(ERROR) << "getStorageInfo failed with result " << toString(result) << " and size "
+                       << halInfos.size();
             return;
         }
         set_values_from_hal_storage_info(halInfos[0]);
@@ -393,7 +341,7 @@
     });
 
     if (!ret.isOk()) {
-        LOG_TO(SYSTEM, ERROR) << "getStorageInfo failed with " << ret.description();
+        LOG(ERROR) << "getStorageInfo failed with " << ret.description();
     }
 }
 
diff --git a/storaged/storaged_uid_monitor.cpp b/storaged/storaged_uid_monitor.cpp
index 55380ba..f47bf72 100644
--- a/storaged/storaged_uid_monitor.cpp
+++ b/storaged/storaged_uid_monitor.cpp
@@ -71,8 +71,7 @@
         !ParseUint(fields[8],  &io[BACKGROUND].write_bytes) ||
         !ParseUint(fields[9],  &io[FOREGROUND].fsync) ||
         !ParseUint(fields[10], &io[BACKGROUND].fsync)) {
-        LOG_TO(SYSTEM, WARNING) << "Invalid uid I/O stats: \""
-                                << s << "\"";
+        LOG(WARNING) << "Invalid uid I/O stats: \"" << s << "\"";
         return false;
     }
     return true;
@@ -95,8 +94,7 @@
         !ParseUint(fields[size - 3], &io[BACKGROUND].write_bytes) ||
         !ParseUint(fields[size - 2], &io[FOREGROUND].fsync) ||
         !ParseUint(fields[size - 1], &io[BACKGROUND].fsync)) {
-        LOG_TO(SYSTEM, WARNING) << "Invalid task I/O stats: \""
-                                << s << "\"";
+        LOG(WARNING) << "Invalid task I/O stats: \"" << s << "\"";
         return false;
     }
     comm = Join(std::vector<std::string>(
@@ -123,13 +121,13 @@
 {
     sp<IServiceManager> sm = defaultServiceManager();
     if (sm == NULL) {
-        LOG_TO(SYSTEM, ERROR) << "defaultServiceManager failed";
+        LOG(ERROR) << "defaultServiceManager failed";
         return;
     }
 
     sp<IBinder> binder = sm->getService(String16("package_native"));
     if (binder == NULL) {
-        LOG_TO(SYSTEM, ERROR) << "getService package_native failed";
+        LOG(ERROR) << "getService package_native failed";
         return;
     }
 
@@ -137,8 +135,7 @@
     std::vector<std::string> names;
     binder::Status status = package_mgr->getNamesForUids(uids, &names);
     if (!status.isOk()) {
-        LOG_TO(SYSTEM, ERROR) << "package_native::getNamesForUids failed: "
-                              << status.exceptionMessage();
+        LOG(ERROR) << "package_native::getNamesForUids failed: " << status.exceptionMessage();
         return;
     }
 
@@ -158,7 +155,7 @@
     std::unordered_map<uint32_t, uid_info> uid_io_stats;
     std::string buffer;
     if (!ReadFileToString(UID_IO_STATS_PATH, &buffer)) {
-        PLOG_TO(SYSTEM, ERROR) << UID_IO_STATS_PATH << ": ReadFileToString failed";
+        PLOG(ERROR) << UID_IO_STATS_PATH << ": ReadFileToString failed";
         return uid_io_stats;
     }
 
diff --git a/toolbox/Android.bp b/toolbox/Android.bp
index 1f852ff..4ca5f5a 100644
--- a/toolbox/Android.bp
+++ b/toolbox/Android.bp
@@ -1,14 +1,10 @@
 cc_defaults {
     name: "toolbox_defaults",
-
     cflags: [
         "-Werror",
         "-Wno-unused-parameter",
         "-Wno-unused-const-variable",
         "-D_FILE_OFFSET_BITS=64",
-        "-DWITHOUT_NLS",
-        "-DWITHOUT_BZ2",
-        "-DWITHOUT_GZIP",
     ],
 }
 
@@ -28,6 +24,9 @@
         "toolbox.c",
         "getevent.c",
         "getprop.cpp",
+        "modprobe.cpp",
+        "setprop.cpp",
+        "start.cpp",
     ],
     generated_headers: [
         "toolbox_input_labels",
@@ -35,11 +34,18 @@
     shared_libs: [
         "libbase",
     ],
-    static_libs: ["libpropertyinfoparser"],
+    static_libs: [
+        "libmodprobe",
+        "libpropertyinfoparser",
+    ],
 
     symlinks: [
         "getevent",
         "getprop",
+        "modprobe",
+        "setprop",
+        "start",
+        "stop",
     ],
 }
 
@@ -55,47 +61,3 @@
     vendor: true,
     defaults: ["toolbox_binary_defaults"],
 }
-
-// We only want 'r' on userdebug and eng builds.
-cc_binary {
-    name: "r",
-    defaults: ["toolbox_defaults"],
-    srcs: ["r.c"],
-    vendor_available: true,
-}
-
-// We build BSD grep separately (but see http://b/111849261).
-cc_defaults {
-    name: "grep_common",
-    defaults: ["toolbox_defaults"],
-    srcs: [
-        "upstream-netbsd/usr.bin/grep/fastgrep.c",
-        "upstream-netbsd/usr.bin/grep/file.c",
-        "upstream-netbsd/usr.bin/grep/grep.c",
-        "upstream-netbsd/usr.bin/grep/queue.c",
-        "upstream-netbsd/usr.bin/grep/util.c",
-    ],
-    symlinks: [
-        "egrep",
-        "fgrep",
-    ],
-    sanitize: {
-        integer_overflow: false,
-    },
-}
-
-cc_binary {
-    name: "grep",
-    defaults: ["grep_common"],
-    recovery_available: true,
-}
-
-// Build vendor grep.
-// TODO: Add vendor_available to "grep" module and remove "grep_vendor" module
-//       when vendor_available is fully supported.
-cc_binary {
-    name: "grep_vendor",
-    stem: "grep",
-    vendor: true,
-    defaults: ["grep_common"],
-}
diff --git a/toolbox/modprobe.cpp b/toolbox/modprobe.cpp
new file mode 100644
index 0000000..3ffa74e
--- /dev/null
+++ b/toolbox/modprobe.cpp
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ctype.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <iostream>
+
+#include <android-base/strings.h>
+#include <modprobe/modprobe.h>
+
+enum modprobe_mode {
+    AddModulesMode,
+    RemoveModulesMode,
+    ListModulesMode,
+    ShowDependenciesMode,
+};
+
+static void print_usage(void) {
+    std::cerr << "Usage:" << std::endl;
+    std::cerr << std::endl;
+    std::cerr << "  modprobe [-alrqvsDb] [-d DIR] [MODULE]+" << std::endl;
+    std::cerr << "  modprobe [-alrqvsDb] [-d DIR] MODULE [symbol=value][...]" << std::endl;
+    std::cerr << std::endl;
+    std::cerr << "Options:" << std::endl;
+    std::cerr << "  -b: Apply blocklist to module names too" << std::endl;
+    std::cerr << "  -d: Load modules from DIR, option may be used multiple times" << std::endl;
+    std::cerr << "  -D: Print dependencies for modules only, do not load";
+    std::cerr << "  -h: Print this help" << std::endl;
+    std::cerr << "  -l: List modules matching pattern" << std::endl;
+    std::cerr << "  -r: Remove MODULE (multiple modules may be specified)" << std::endl;
+    std::cerr << "  -q: Quiet" << std::endl;
+    std::cerr << "  -v: Verbose" << std::endl;
+    std::cerr << std::endl;
+}
+
+#define check_mode()                                                      \
+    if (mode != AddModulesMode) {                                         \
+        std::cerr << "Error, multiple mode flags specified" << std::endl; \
+        print_usage();                                                    \
+        return EXIT_FAILURE;                                              \
+    }
+
+extern "C" int modprobe_main(int argc, char** argv) {
+    std::vector<std::string> modules;
+    std::string module_parameters;
+    std::vector<std::string> mod_dirs;
+    modprobe_mode mode = AddModulesMode;
+    bool blocklist = false;
+    bool verbose = false;
+    int rv = EXIT_SUCCESS;
+
+    int opt;
+    while ((opt = getopt(argc, argv, "abd:Dhlqrv")) != -1) {
+        switch (opt) {
+            case 'a':
+                // toybox modprobe supported -a to load multiple modules, this
+                // is supported here by default, ignore flag
+                check_mode();
+                break;
+            case 'b':
+                blocklist = true;
+                break;
+            case 'd':
+                mod_dirs.emplace_back(optarg);
+                break;
+            case 'D':
+                check_mode();
+                mode = ShowDependenciesMode;
+                break;
+            case 'h':
+                print_usage();
+                return EXIT_SUCCESS;
+            case 'l':
+                check_mode();
+                mode = ListModulesMode;
+                break;
+            case 'q':
+                verbose = false;
+                break;
+            case 'r':
+                check_mode();
+                mode = RemoveModulesMode;
+                break;
+            case 'v':
+                verbose = true;
+                break;
+            default:
+                std::cerr << "Unrecognized option: " << opt << std::endl;
+                return EXIT_FAILURE;
+        }
+    }
+
+    int parameter_count = 0;
+    for (opt = optind; opt < argc; opt++) {
+        if (!strchr(argv[opt], '=')) {
+            modules.emplace_back(argv[opt]);
+        } else {
+            parameter_count++;
+            if (module_parameters.empty()) {
+                module_parameters = argv[opt];
+            } else {
+                module_parameters = module_parameters + " " + argv[opt];
+            }
+        }
+    }
+
+    if (verbose) {
+        std::cout << "mode is " << mode << std::endl;
+        std::cout << "verbose is " << verbose << std::endl;
+        std::cout << "mod_dirs is: " << android::base::Join(mod_dirs, "") << std::endl;
+        std::cout << "modules is: " << android::base::Join(modules, "") << std::endl;
+        std::cout << "module parameters is: " << android::base::Join(module_parameters, "")
+                  << std::endl;
+    }
+
+    if (modules.empty()) {
+        if (mode == ListModulesMode) {
+            // emulate toybox modprobe list with no pattern (list all)
+            modules.emplace_back("*");
+        } else {
+            std::cerr << "No modules given." << std::endl;
+            print_usage();
+            return EXIT_FAILURE;
+        }
+    }
+    if (mod_dirs.empty()) {
+        std::cerr << "No module configuration directories given." << std::endl;
+        print_usage();
+        return EXIT_FAILURE;
+    }
+    if (parameter_count && modules.size() > 1) {
+        std::cerr << "Only one module may be loaded when specifying module parameters."
+                  << std::endl;
+        print_usage();
+        return EXIT_FAILURE;
+    }
+
+    Modprobe m(mod_dirs);
+    m.EnableVerbose(verbose);
+    if (blocklist) {
+        m.EnableBlocklist(true);
+    }
+
+    for (const auto& module : modules) {
+        switch (mode) {
+            case AddModulesMode:
+                if (!m.LoadWithAliases(module, true, module_parameters)) {
+                    std::cerr << "Failed to load module " << module;
+                    rv = EXIT_FAILURE;
+                }
+                break;
+            case RemoveModulesMode:
+                if (!m.Remove(module)) {
+                    std::cerr << "Failed to remove module " << module;
+                    rv = EXIT_FAILURE;
+                }
+                break;
+            case ListModulesMode: {
+                std::vector<std::string> list = m.ListModules(module);
+                std::cout << android::base::Join(list, "\n") << std::endl;
+                break;
+            }
+            case ShowDependenciesMode: {
+                std::vector<std::string> pre_deps;
+                std::vector<std::string> deps;
+                std::vector<std::string> post_deps;
+                if (!m.GetAllDependencies(module, &pre_deps, &deps, &post_deps)) {
+                    rv = EXIT_FAILURE;
+                    break;
+                }
+                std::cout << "Dependencies for " << module << ":" << std::endl;
+                std::cout << "Soft pre-dependencies:" << std::endl;
+                std::cout << android::base::Join(pre_deps, "\n") << std::endl;
+                std::cout << "Hard dependencies:" << std::endl;
+                std::cout << android::base::Join(deps, "\n") << std::endl;
+                std::cout << "Soft post-dependencies:" << std::endl;
+                std::cout << android::base::Join(post_deps, "\n") << std::endl;
+                break;
+            }
+            default:
+                std::cerr << "Bad mode";
+                rv = EXIT_FAILURE;
+        }
+    }
+
+    return rv;
+}
diff --git a/toolbox/r.c b/toolbox/r.c
deleted file mode 100644
index b96cdb2..0000000
--- a/toolbox/r.c
+++ /dev/null
@@ -1,102 +0,0 @@
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#if __LP64__
-#define strtoptr strtoull
-#else
-#define strtoptr strtoul
-#endif
-
-static int usage()
-{
-    fprintf(stderr,"r [-b|-s] <address> [<value>]\n");
-    return -1;
-}
-
-int main(int argc, char *argv[])
-{
-    if(argc < 2) return usage();
-
-    int width = 4;
-    if(!strcmp(argv[1], "-b")) {
-        width = 1;
-        argc--;
-        argv++;
-    } else if(!strcmp(argv[1], "-s")) {
-        width = 2;
-        argc--;
-        argv++;
-    }
-
-    if(argc < 2) return usage();
-    uintptr_t addr = strtoptr(argv[1], 0, 16);
-
-    uintptr_t endaddr = 0;
-    char* end = strchr(argv[1], '-');
-    if (end)
-        endaddr = strtoptr(end + 1, 0, 16);
-
-    if (!endaddr)
-        endaddr = addr + width - 1;
-
-    if (endaddr <= addr) {
-        fprintf(stderr, "end address <= start address\n");
-        return -1;
-    }
-
-    bool set = false;
-    uint32_t value = 0;
-    if(argc > 2) {
-        set = true;
-        value = strtoul(argv[2], 0, 16);
-    }
-
-    int fd = open("/dev/mem", O_RDWR | O_SYNC);
-    if(fd < 0) {
-        fprintf(stderr,"cannot open /dev/mem\n");
-        return -1;
-    }
-
-    off64_t mmap_start = addr & ~(PAGE_SIZE - 1);
-    size_t mmap_size = endaddr - mmap_start + 1;
-    mmap_size = (mmap_size + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
-
-    void* page = mmap64(0, mmap_size, PROT_READ | PROT_WRITE,
-                        MAP_SHARED, fd, mmap_start);
-
-    if(page == MAP_FAILED){
-        fprintf(stderr,"cannot mmap region\n");
-        return -1;
-    }
-
-    while (addr <= endaddr) {
-        switch(width){
-        case 4: {
-            uint32_t* x = (uint32_t*) (((uintptr_t) page) + (addr & 4095));
-            if(set) *x = value;
-            fprintf(stderr,"%08"PRIxPTR": %08x\n", addr, *x);
-            break;
-        }
-        case 2: {
-            uint16_t* x = (uint16_t*) (((uintptr_t) page) + (addr & 4095));
-            if(set) *x = value;
-            fprintf(stderr,"%08"PRIxPTR": %04x\n", addr, *x);
-            break;
-        }
-        case 1: {
-            uint8_t* x = (uint8_t*) (((uintptr_t) page) + (addr & 4095));
-            if(set) *x = value;
-            fprintf(stderr,"%08"PRIxPTR": %02x\n", addr, *x);
-            break;
-        }
-        }
-        addr += width;
-    }
-    return 0;
-}
diff --git a/toolbox/setprop.cpp b/toolbox/setprop.cpp
new file mode 100644
index 0000000..acf8c3e
--- /dev/null
+++ b/toolbox/setprop.cpp
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <sys/system_properties.h>
+
+#include <iostream>
+
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+
+using android::base::SetProperty;
+using android::base::StartsWith;
+
+extern "C" int setprop_main(int argc, char** argv) {
+    if (argc != 3) {
+        std::cout << "usage: setprop NAME VALUE\n"
+                     "\n"
+                     "Sets an Android system property."
+                  << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    auto name = std::string{argv[1]};
+    auto value = std::string{argv[2]};
+
+    // SetProperty() doesn't tell us why it failed, and actually can't recognize most failures, so
+    // we duplicate some of init's checks here to help the user.
+
+    if (name.front() == '.' || name.back() == '.') {
+        std::cerr << "Property names must not start or end with a '.'" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    if (name.find("..") != std::string::npos) {
+        std::cerr << "'..' is not allowed in a property name" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    for (const auto& c : name) {
+        if (!isalnum(c) && !strchr(":@_.-", c)) {
+            std::cerr << "Invalid character '" << c << "' in name '" << name << "'" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    if (value.size() >= PROP_VALUE_MAX && !StartsWith(value, "ro.")) {
+        std::cerr << "Value '" << value << "' is too long, " << value.size()
+                  << " bytes vs a max of " << PROP_VALUE_MAX << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    if (mbstowcs(nullptr, value.data(), 0) == static_cast<std::size_t>(-1)) {
+        std::cerr << "Value '" << value << "' is not a UTF8 encoded string" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    if (!SetProperty(name, value)) {
+        std::cerr << "Failed to set property '" << name << "' to '" << value
+                  << "'.\nSee dmesg for error reason." << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}
\ No newline at end of file
diff --git a/toolbox/start.cpp b/toolbox/start.cpp
new file mode 100644
index 0000000..cffb89c
--- /dev/null
+++ b/toolbox/start.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include <android-base/properties.h>
+
+using android::base::GetProperty;
+using android::base::SetProperty;
+using namespace std::literals;
+
+static void ControlService(bool start, const std::string& service) {
+    if (!android::base::SetProperty(start ? "ctl.start" : "ctl.stop", service)) {
+        std::cerr << "Unable to " << (start ? "start" : "stop") << " service '" << service
+                  << "'\nSee dmesg for error reason." << std::endl;
+        exit(EXIT_FAILURE);
+    }
+}
+
+static void ControlDefaultServices(bool start) {
+    std::vector<std::string> services = {
+        "iorapd",
+        "netd",
+        "surfaceflinger",
+        "audioserver",
+        "zygote",
+    };
+
+    // Only start zygote_secondary if not single arch.
+    std::string zygote_configuration = GetProperty("ro.zygote", "");
+    if (zygote_configuration != "zygote32" && zygote_configuration != "zygote64") {
+        services.emplace_back("zygote_secondary");
+    }
+
+    if (start) {
+        for (const auto& service : services) {
+            ControlService(true, service);
+        }
+    } else {
+        for (auto it = services.crbegin(); it != services.crend(); ++it) {
+            ControlService(false, *it);
+        }
+    }
+}
+
+static int StartStop(int argc, char** argv, bool start) {
+    if (getuid()) {
+        std::cerr << "Must be root" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    if (argc == 1) {
+        ControlDefaultServices(start);
+    }
+
+    if (argc == 2 && argv[1] == "--help"s) {
+        std::cout << "usage: " << (start ? "start" : "stop")
+                  << " [SERVICE...]\n"
+                     "\n"
+                  << (start ? "Starts" : "Stops")
+                  << " the given system service, or netd/surfaceflinger/zygotes." << std::endl;
+        return EXIT_SUCCESS;
+    }
+
+    for (int i = 1; i < argc; ++i) {
+        ControlService(start, argv[i]);
+    }
+    return EXIT_SUCCESS;
+}
+
+extern "C" int start_main(int argc, char** argv) {
+    return StartStop(argc, argv, true);
+}
+
+extern "C" int stop_main(int argc, char** argv) {
+    return StartStop(argc, argv, false);
+}
\ No newline at end of file
diff --git a/toolbox/tools.h b/toolbox/tools.h
index abeb3ef..bb57e67 100644
--- a/toolbox/tools.h
+++ b/toolbox/tools.h
@@ -1,3 +1,7 @@
 TOOL(getevent)
 TOOL(getprop)
+TOOL(modprobe)
+TOOL(setprop)
+TOOL(start)
+TOOL(stop)
 TOOL(toolbox)
diff --git a/toolbox/upstream-netbsd/usr.bin/grep/fastgrep.c b/toolbox/upstream-netbsd/usr.bin/grep/fastgrep.c
deleted file mode 100644
index 2fcd864..0000000
--- a/toolbox/upstream-netbsd/usr.bin/grep/fastgrep.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*	$OpenBSD: util.c,v 1.36 2007/10/02 17:59:18 otto Exp $	*/
-/*	$FreeBSD: head/usr.bin/grep/fastgrep.c 211496 2010-08-19 09:28:59Z des $ */
-
-/*-
- * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
- * Copyright (C) 2008 Gabor Kovesdan <gabor@FreeBSD.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * XXX: This file is a speed up for grep to cover the defects of the
- * regex library.  These optimizations should practically be implemented
- * there keeping this code clean.  This is a future TODO, but for the
- * meantime, we need to use this workaround.
- */
-
-#if HAVE_NBTOOL_CONFIG_H
-#include "nbtool_config.h"
-#endif
-
-#include <sys/cdefs.h>
-__RCSID("$NetBSD: fastgrep.c,v 1.5 2011/04/18 03:27:40 joerg Exp $");
-
-#include <limits.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wchar.h>
-#include <wctype.h>
-
-#include "grep.h"
-
-static inline int	grep_cmp(const unsigned char *, const unsigned char *, size_t);
-static inline void	grep_revstr(unsigned char *, int);
-
-void
-fgrepcomp(fastgrep_t *fg, const char *pat)
-{
-	unsigned int i;
-
-	/* Initialize. */
-	fg->len = strlen(pat);
-	fg->bol = false;
-	fg->eol = false;
-	fg->reversed = false;
-
-	fg->pattern = (unsigned char *)grep_strdup(pat);
-
-	/* Preprocess pattern. */
-	for (i = 0; i <= UCHAR_MAX; i++)
-		fg->qsBc[i] = fg->len;
-	for (i = 1; i < fg->len; i++)
-		fg->qsBc[fg->pattern[i]] = fg->len - i;
-}
-
-/*
- * Returns: -1 on failure, 0 on success
- */
-int
-fastcomp(fastgrep_t *fg, const char *pat)
-{
-	unsigned int i;
-	int firstHalfDot = -1;
-	int firstLastHalfDot = -1;
-	int hasDot = 0;
-	int lastHalfDot = 0;
-	int shiftPatternLen;
-
-	/* Initialize. */
-	fg->len = strlen(pat);
-	fg->bol = false;
-	fg->eol = false;
-	fg->reversed = false;
-	fg->word = wflag;
-
-	/* Remove end-of-line character ('$'). */
-	if (fg->len > 0 && pat[fg->len - 1] == '$') {
-		fg->eol = true;
-		fg->len--;
-	}
-
-	/* Remove beginning-of-line character ('^'). */
-	if (pat[0] == '^') {
-		fg->bol = true;
-		fg->len--;
-		pat++;
-	}
-
-	if (fg->len >= 14 &&
-	    memcmp(pat, "[[:<:]]", 7) == 0 &&
-	    memcmp(pat + fg->len - 7, "[[:>:]]", 7) == 0) {
-		fg->len -= 14;
-		pat += 7;
-		/* Word boundary is handled separately in util.c */
-		fg->word = true;
-	}
-
-	/*
-	 * pat has been adjusted earlier to not include '^', '$' or
-	 * the word match character classes at the beginning and ending
-	 * of the string respectively.
-	 */
-	fg->pattern = grep_malloc(fg->len + 1);
-	memcpy(fg->pattern, pat, fg->len);
-	fg->pattern[fg->len] = '\0';
-
-	/* Look for ways to cheat...er...avoid the full regex engine. */
-	for (i = 0; i < fg->len; i++) {
-		/* Can still cheat? */
-		if (fg->pattern[i] == '.') {
-			hasDot = i;
-			if (i < fg->len / 2) {
-				if (firstHalfDot < 0)
-					/* Closest dot to the beginning */
-					firstHalfDot = i;
-			} else {
-				/* Closest dot to the end of the pattern. */
-				lastHalfDot = i;
-				if (firstLastHalfDot < 0)
-					firstLastHalfDot = i;
-			}
-		} else {
-			/* Free memory and let others know this is empty. */
-			free(fg->pattern);
-			fg->pattern = NULL;
-			return (-1);
-		}
-	}
-
-	/*
-	 * Determine if a reverse search would be faster based on the placement
-	 * of the dots.
-	 */
-	if ((!(lflag || cflag)) && ((!(fg->bol || fg->eol)) &&
-	    ((lastHalfDot) && ((firstHalfDot < 0) ||
-	    ((fg->len - (lastHalfDot + 1)) < (size_t)firstHalfDot)))) &&
-	    !oflag && !color) {
-		fg->reversed = true;
-		hasDot = fg->len - (firstHalfDot < 0 ?
-		    firstLastHalfDot : firstHalfDot) - 1;
-		grep_revstr(fg->pattern, fg->len);
-	}
-
-	/*
-	 * Normal Quick Search would require a shift based on the position the
-	 * next character after the comparison is within the pattern.  With
-	 * wildcards, the position of the last dot effects the maximum shift
-	 * distance.
-	 * The closer to the end the wild card is the slower the search.  A
-	 * reverse version of this algorithm would be useful for wildcards near
-	 * the end of the string.
-	 *
-	 * Examples:
-	 * Pattern	Max shift
-	 * -------	---------
-	 * this		5
-	 * .his		4
-	 * t.is		3
-	 * th.s		2
-	 * thi.		1
-	 */
-
-	/* Adjust the shift based on location of the last dot ('.'). */
-	shiftPatternLen = fg->len - hasDot;
-
-	/* Preprocess pattern. */
-	for (i = 0; i <= (signed)UCHAR_MAX; i++)
-		fg->qsBc[i] = shiftPatternLen;
-	for (i = hasDot + 1; i < fg->len; i++) {
-		fg->qsBc[fg->pattern[i]] = fg->len - i;
-	}
-
-	/*
-	 * Put pattern back to normal after pre-processing to allow for easy
-	 * comparisons later.
-	 */
-	if (fg->reversed)
-		grep_revstr(fg->pattern, fg->len);
-
-	return (0);
-}
-
-int
-grep_search(fastgrep_t *fg, const unsigned char *data, size_t len, regmatch_t *pmatch)
-{
-	unsigned int j;
-	int ret = REG_NOMATCH;
-
-	if (pmatch->rm_so == (ssize_t)len)
-		return (ret);
-
-	if (fg->bol && pmatch->rm_so != 0) {
-		pmatch->rm_so = len;
-		pmatch->rm_eo = len;
-		return (ret);
-	}
-
-	/* No point in going farther if we do not have enough data. */
-	if (len < fg->len)
-		return (ret);
-
-	/* Only try once at the beginning or ending of the line. */
-	if (fg->bol || fg->eol) {
-		/* Simple text comparison. */
-		/* Verify data is >= pattern length before searching on it. */
-		if (len >= fg->len) {
-			/* Determine where in data to start search at. */
-			j = fg->eol ? len - fg->len : 0;
-			if (!((fg->bol && fg->eol) && (len != fg->len)))
-				if (grep_cmp(fg->pattern, data + j,
-				    fg->len) == -1) {
-					pmatch->rm_so = j;
-					pmatch->rm_eo = j + fg->len;
-						ret = 0;
-				}
-		}
-	} else if (fg->reversed) {
-		/* Quick Search algorithm. */
-		j = len;
-		do {
-			if (grep_cmp(fg->pattern, data + j - fg->len,
-				fg->len) == -1) {
-				pmatch->rm_so = j - fg->len;
-				pmatch->rm_eo = j;
-				ret = 0;
-				break;
-			}
-			/* Shift if within bounds, otherwise, we are done. */
-			if (j == fg->len)
-				break;
-			j -= fg->qsBc[data[j - fg->len - 1]];
-		} while (j >= fg->len);
-	} else {
-		/* Quick Search algorithm. */
-		j = pmatch->rm_so;
-		do {
-			if (grep_cmp(fg->pattern, data + j, fg->len) == -1) {
-				pmatch->rm_so = j;
-				pmatch->rm_eo = j + fg->len;
-				ret = 0;
-				break;
-			}
-
-			/* Shift if within bounds, otherwise, we are done. */
-			if (j + fg->len == len)
-				break;
-			else
-				j += fg->qsBc[data[j + fg->len]];
-		} while (j <= (len - fg->len));
-	}
-
-	return (ret);
-}
-
-/*
- * Returns:	i >= 0 on failure (position that it failed)
- *		-1 on success
- */
-static inline int
-grep_cmp(const unsigned char *pat, const unsigned char *data, size_t len)
-{
-	size_t size;
-	wchar_t *wdata, *wpat;
-	unsigned int i;
-
-	if (iflag) {
-		if ((size = mbstowcs(NULL, (const char *)data, 0)) ==
-		    ((size_t) - 1))
-			return (-1);
-
-		wdata = grep_malloc(size * sizeof(wint_t));
-
-		if (mbstowcs(wdata, (const char *)data, size) ==
-		    ((size_t) - 1))
-			return (-1);
-
-		if ((size = mbstowcs(NULL, (const char *)pat, 0)) ==
-		    ((size_t) - 1))
-			return (-1);
-
-		wpat = grep_malloc(size * sizeof(wint_t));
-
-		if (mbstowcs(wpat, (const char *)pat, size) == ((size_t) - 1))
-			return (-1);
-		for (i = 0; i < len; i++) {
-			if ((towlower(wpat[i]) == towlower(wdata[i])) ||
-			    ((grepbehave != GREP_FIXED) && wpat[i] == L'.'))
-				continue;
-			free(wpat);
-			free(wdata);
-				return (i);
-		}
-	} else {
-		for (i = 0; i < len; i++) {
-			if ((pat[i] == data[i]) || ((grepbehave != GREP_FIXED) &&
-			    pat[i] == '.'))
-				continue;
-			return (i);
-		}
-	}
-	return (-1);
-}
-
-static inline void
-grep_revstr(unsigned char *str, int len)
-{
-	int i;
-	char c;
-
-	for (i = 0; i < len / 2; i++) {
-		c = str[i];
-		str[i] = str[len - i - 1];
-		str[len - i - 1] = c;
-	}
-}
diff --git a/toolbox/upstream-netbsd/usr.bin/grep/file.c b/toolbox/upstream-netbsd/usr.bin/grep/file.c
deleted file mode 100644
index 428bf58..0000000
--- a/toolbox/upstream-netbsd/usr.bin/grep/file.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/*	$NetBSD: file.c,v 1.10 2018/08/12 09:03:21 christos Exp $	*/
-/*	$FreeBSD: head/usr.bin/grep/file.c 211496 2010-08-19 09:28:59Z des $	*/
-/*	$OpenBSD: file.c,v 1.11 2010/07/02 20:48:48 nicm Exp $	*/
-
-/*-
- * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
- * Copyright (C) 2008-2010 Gabor Kovesdan <gabor@FreeBSD.org>
- * Copyright (C) 2010 Dimitry Andric <dimitry@andric.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if HAVE_NBTOOL_CONFIG_H
-#include "nbtool_config.h"
-#endif
-
-#include <sys/cdefs.h>
-__RCSID("$NetBSD: file.c,v 1.10 2018/08/12 09:03:21 christos Exp $");
-
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <wchar.h>
-#include <wctype.h>
-
-#include "grep.h"
-
-#define	MAXBUFSIZ	(32 * 1024)
-#define	LNBUFBUMP	80
-
-#ifndef WITHOUT_GZIP
-static gzFile gzbufdesc;
-#endif
-#ifndef WITHOUT_BZ2
-static BZFILE* bzbufdesc;
-#endif
-
-static unsigned char buffer[MAXBUFSIZ + 1];
-static unsigned char *bufpos;
-static size_t bufrem;
-
-static unsigned char *lnbuf;
-static size_t lnbuflen;
-
-static inline int
-grep_refill(struct file *f)
-{
-	ssize_t nr = -1;
-	int bzerr;
-
-	bufpos = buffer;
-	bufrem = 0;
-
-#ifndef WITHOUT_GZIP
-	if (filebehave == FILE_GZIP) {
-		nr = gzread(gzbufdesc, buffer, MAXBUFSIZ);
-		if (nr == -1)
-			return -1;
-	}
-#endif
-#ifndef WITHOUT_BZ2
-	if (filebehave == FILE_BZIP && bzbufdesc != NULL) {
-		nr = BZ2_bzRead(&bzerr, bzbufdesc, buffer, MAXBUFSIZ);
-		switch (bzerr) {
-		case BZ_OK:
-		case BZ_STREAM_END:
-			/* No problem, nr will be okay */
-			break;
-		case BZ_DATA_ERROR_MAGIC:
-			/*
-			 * As opposed to gzread(), which simply returns the
-			 * plain file data, if it is not in the correct
-			 * compressed format, BZ2_bzRead() instead aborts.
-			 *
-			 * So, just restart at the beginning of the file again,
-			 * and use plain reads from now on.
-			 */
-			BZ2_bzReadClose(&bzerr, bzbufdesc);
-			bzbufdesc = NULL;
-			if (lseek(f->fd, 0, SEEK_SET) == -1)
-				return (-1);
-			nr = read(f->fd, buffer, MAXBUFSIZ);
-			break;
-		default:
-			/* Make sure we exit with an error */
-			nr = -1;
-		}
-		if (nr == -1)
-			return -1;
-	}
-#endif
-	if (nr == -1) {
-		nr = read(f->fd, buffer, MAXBUFSIZ);
-	}
-
-	if (nr < 0)
-		return (-1);
-
-	bufrem = nr;
-	return (0);
-}
-
-static inline void
-grep_lnbufgrow(size_t newlen)
-{
-
-	if (lnbuflen < newlen) {
-		lnbuf = grep_realloc(lnbuf, newlen);
-		lnbuflen = newlen;
-	}
-}
-
-char *
-grep_fgetln(struct file *f, size_t *lenp)
-{
-	unsigned char *p;
-	char *ret;
-	size_t len;
-	size_t off;
-	ptrdiff_t diff;
-
-	/* Fill the buffer, if necessary */
-	if (bufrem == 0 && grep_refill(f) != 0)
-		goto error;
-
-	if (bufrem == 0) {
-		/* Return zero length to indicate EOF */
-		*lenp = 0;
-		return ((char *)bufpos);
-	}
-
-	/* Look for a newline in the remaining part of the buffer */
-	if ((p = memchr(bufpos, line_sep, bufrem)) != NULL) {
-		++p; /* advance over newline */
-		len = p - bufpos;
-		grep_lnbufgrow(len + 1);
-		memcpy(lnbuf, bufpos, len);
-		lnbuf[len] = '\0';
-		*lenp = len;
-		bufrem -= len;
-		bufpos = p;
-		return ((char *)lnbuf);
-	}
-
-	/* We have to copy the current buffered data to the line buffer */
-	for (len = bufrem, off = 0; ; len += bufrem) {
-		/* Make sure there is room for more data */
-		grep_lnbufgrow(len + LNBUFBUMP);
-		memcpy(lnbuf + off, bufpos, len - off);
-		lnbuf[len] = '\0';
-		off = len;
-		if (grep_refill(f) != 0)
-			goto error;
-		if (bufrem == 0)
-			/* EOF: return partial line */
-			break;
-		if ((p = memchr(bufpos, line_sep, bufrem)) == NULL)
-			continue;
-		/* got it: finish up the line (like code above) */
-		++p;
-		diff = p - bufpos;
-		len += diff;
-		grep_lnbufgrow(len + 1);
-		memcpy(lnbuf + off, bufpos, diff);
-		lnbuf[off + diff] = '\0';
-		bufrem -= diff;
-		bufpos = p;
-		break;
-	}
-	*lenp = len;
-	return ((char *)lnbuf);
-
-error:
-	*lenp = 0;
-	return (NULL);
-}
-
-static inline struct file *
-grep_file_init(struct file *f)
-{
-
-#ifndef WITHOUT_GZIP
-	if (filebehave == FILE_GZIP &&
-	    (gzbufdesc = gzdopen(f->fd, "r")) == NULL)
-		goto error;
-#endif
-
-#ifndef WITHOUT_BZ2
-	if (filebehave == FILE_BZIP &&
-	    (bzbufdesc = BZ2_bzdopen(f->fd, "r")) == NULL)
-		goto error;
-#endif
-
-	/* Fill read buffer, also catches errors early */
-	if (grep_refill(f) != 0)
-		goto error;
-
-	/* Check for binary stuff, if necessary */
-	if (!nulldataflag && binbehave != BINFILE_TEXT &&
-	    memchr(bufpos, '\0', bufrem) != NULL)
-		f->binary = true;
-
-	return (f);
-error:
-	close(f->fd);
-	free(f);
-	return (NULL);
-}
-
-/*
- * Opens a file for processing.
- */
-struct file *
-grep_open(const char *path)
-{
-	struct file *f;
-
-	f = grep_malloc(sizeof *f);
-	memset(f, 0, sizeof *f);
-	if (path == NULL) {
-		/* Processing stdin implies --line-buffered. */
-		lbflag = true;
-		f->fd = STDIN_FILENO;
-	} else if ((f->fd = open(path, O_RDONLY)) == -1) {
-		free(f);
-		return (NULL);
-	}
-
-	return (grep_file_init(f));
-}
-
-/*
- * Closes a file.
- */
-void
-grep_close(struct file *f)
-{
-
-	close(f->fd);
-
-	/* Reset read buffer and line buffer */
-	bufpos = buffer;
-	bufrem = 0;
-
-	free(lnbuf);
-	lnbuf = NULL;
-	lnbuflen = 0;
-}
diff --git a/toolbox/upstream-netbsd/usr.bin/grep/grep.c b/toolbox/upstream-netbsd/usr.bin/grep/grep.c
deleted file mode 100644
index bad2a73..0000000
--- a/toolbox/upstream-netbsd/usr.bin/grep/grep.c
+++ /dev/null
@@ -1,722 +0,0 @@
-/*	$NetBSD: grep.c,v 1.15 2018/08/12 09:03:21 christos Exp $	*/
-/* 	$FreeBSD: head/usr.bin/grep/grep.c 211519 2010-08-19 22:55:17Z delphij $	*/
-/*	$OpenBSD: grep.c,v 1.42 2010/07/02 22:18:03 tedu Exp $	*/
-
-/*-
- * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
- * Copyright (C) 2008-2009 Gabor Kovesdan <gabor@FreeBSD.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if HAVE_NBTOOL_CONFIG_H
-#include "nbtool_config.h"
-#endif
-
-#include <sys/cdefs.h>
-__RCSID("$NetBSD: grep.c,v 1.15 2018/08/12 09:03:21 christos Exp $");
-
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <ctype.h>
-#include <err.h>
-#include <errno.h>
-#include <getopt.h>
-#include <limits.h>
-#include <libgen.h>
-#include <locale.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "grep.h"
-
-#ifndef WITHOUT_NLS
-#include <nl_types.h>
-nl_catd	 catalog;
-#endif
-
-/*
- * Default messags to use when NLS is disabled or no catalogue
- * is found.
- */
-const char	*errstr[] = {
-	"",
-/* 1*/	"(standard input)",
-/* 2*/	"cannot read bzip2 compressed file",
-/* 3*/	"unknown %s option",
-/* 4*/	"usage: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A num] [-B num] [-C[num]]\n",
-/* 5*/	"\t[-e pattern] [-f file] [--binary-files=value] [--color=when]\n",
-/* 6*/	"\t[--context[=num]] [--directories=action] [--label] [--line-buffered]\n",
-/* 7*/	"\t[pattern] [file ...]\n",
-/* 8*/	"Binary file %s matches\n",
-/* 9*/	"%s (BSD grep) %s\n",
-};
-
-/* Flags passed to regcomp() and regexec() */
-int		 cflags = 0;
-int		 eflags = REG_STARTEND;
-
-/* Searching patterns */
-unsigned int	 patterns, pattern_sz;
-char		**pattern;
-regex_t		*r_pattern;
-fastgrep_t	*fg_pattern;
-
-/* Filename exclusion/inclusion patterns */
-unsigned int	 fpatterns, fpattern_sz;
-unsigned int	 dpatterns, dpattern_sz;
-struct epat	*dpattern, *fpattern;
-
-/* For regex errors  */
-char	 re_error[RE_ERROR_BUF + 1];
-
-/* Command-line flags */
-unsigned long long Aflag;	/* -A x: print x lines trailing each match */
-unsigned long long Bflag;	/* -B x: print x lines leading each match */
-bool	 Hflag;		/* -H: always print file name */
-bool	 Lflag;		/* -L: only show names of files with no matches */
-bool	 bflag;		/* -b: show block numbers for each match */
-bool	 cflag;		/* -c: only show a count of matching lines */
-bool	 hflag;		/* -h: don't print filename headers */
-bool	 iflag;		/* -i: ignore case */
-bool	 lflag;		/* -l: only show names of files with matches */
-bool	 mflag;		/* -m x: stop reading the files after x matches */
-unsigned long long mcount;	/* count for -m */
-bool	 nflag;		/* -n: show line numbers in front of matching lines */
-bool	 oflag;		/* -o: print only matching part */
-bool	 qflag;		/* -q: quiet mode (don't output anything) */
-bool	 sflag;		/* -s: silent mode (ignore errors) */
-bool	 vflag;		/* -v: only show non-matching lines */
-bool	 wflag;		/* -w: pattern must start and end on word boundaries */
-bool	 xflag;		/* -x: pattern must match entire line */
-bool	 lbflag;	/* --line-buffered */
-bool	 nullflag;	/* --null */
-bool	 nulldataflag;	/* --null-data */
-unsigned char line_sep = '\n';	/* 0 for --null-data */
-char	*label;		/* --label */
-const char *color;	/* --color */
-int	 grepbehave = GREP_BASIC;	/* -EFGP: type of the regex */
-int	 binbehave = BINFILE_BIN;	/* -aIU: handling of binary files */
-int	 filebehave = FILE_STDIO;	/* -JZ: normal, gzip or bzip2 file */
-int	 devbehave = DEV_READ;		/* -D: handling of devices */
-int	 dirbehave = DIR_READ;		/* -dRr: handling of directories */
-int	 linkbehave = LINK_READ;	/* -OpS: handling of symlinks */
-
-bool	 dexclude, dinclude;	/* --exclude-dir and --include-dir */
-bool	 fexclude, finclude;	/* --exclude and --include */
-
-enum {
-	BIN_OPT = CHAR_MAX + 1,
-	COLOR_OPT,
-	DECOMPRESS_OPT,
-	HELP_OPT,
-	MMAP_OPT,
-	LINEBUF_OPT,
-	LABEL_OPT,
-	R_EXCLUDE_OPT,
-	R_INCLUDE_OPT,
-	R_DEXCLUDE_OPT,
-	R_DINCLUDE_OPT
-};
-
-static inline const char	*init_color(const char *);
-
-/* Housekeeping */
-int	 tail;		/* lines left to print */
-bool	 notfound;	/* file not found */
-
-extern char	*__progname;
-
-/*
- * Prints usage information and returns 2.
- */
-__dead static void
-usage(void)
-{
-	fprintf(stderr, getstr(4), __progname);
-	fprintf(stderr, "%s", getstr(5));
-	fprintf(stderr, "%s", getstr(6));
-	fprintf(stderr, "%s", getstr(7));
-	exit(2);
-}
-
-static const char optstr[] =
-    "0123456789A:B:C:D:EFGHIJLOPSRUVZabcd:e:f:hilm:nopqrsuvwxyz";
-
-struct option long_options[] =
-{
-	{"binary-files",	required_argument,	NULL, BIN_OPT},
-#ifndef WITHOUT_GZIP
-	{"decompress",          no_argument,            NULL, DECOMPRESS_OPT},
-#endif
-	{"help",		no_argument,		NULL, HELP_OPT},
-	{"mmap",		no_argument,		NULL, MMAP_OPT},
-	{"line-buffered",	no_argument,		NULL, LINEBUF_OPT},
-	{"label",		required_argument,	NULL, LABEL_OPT},
-	{"color",		optional_argument,	NULL, COLOR_OPT},
-	{"colour",		optional_argument,	NULL, COLOR_OPT},
-	{"exclude",		required_argument,	NULL, R_EXCLUDE_OPT},
-	{"include",		required_argument,	NULL, R_INCLUDE_OPT},
-	{"exclude-dir",		required_argument,	NULL, R_DEXCLUDE_OPT},
-	{"include-dir",		required_argument,	NULL, R_DINCLUDE_OPT},
-	{"after-context",	required_argument,	NULL, 'A'},
-	{"text",		no_argument,		NULL, 'a'},
-	{"before-context",	required_argument,	NULL, 'B'},
-	{"byte-offset",		no_argument,		NULL, 'b'},
-	{"context",		optional_argument,	NULL, 'C'},
-	{"count",		no_argument,		NULL, 'c'},
-	{"devices",		required_argument,	NULL, 'D'},
-        {"directories",		required_argument,	NULL, 'd'},
-	{"extended-regexp",	no_argument,		NULL, 'E'},
-	{"regexp",		required_argument,	NULL, 'e'},
-	{"fixed-strings",	no_argument,		NULL, 'F'},
-	{"file",		required_argument,	NULL, 'f'},
-	{"basic-regexp",	no_argument,		NULL, 'G'},
-	{"no-filename",		no_argument,		NULL, 'h'},
-	{"with-filename",	no_argument,		NULL, 'H'},
-	{"ignore-case",		no_argument,		NULL, 'i'},
-#ifndef WITHOUT_BZ2
-	{"bz2decompress",	no_argument,		NULL, 'J'},
-#endif
-	{"files-with-matches",	no_argument,		NULL, 'l'},
-	{"files-without-match", no_argument,            NULL, 'L'},
-	{"max-count",		required_argument,	NULL, 'm'},
-	{"line-number",		no_argument,		NULL, 'n'},
-	{"only-matching",	no_argument,		NULL, 'o'},
-	{"quiet",		no_argument,		NULL, 'q'},
-	{"silent",		no_argument,		NULL, 'q'},
-	{"recursive",		no_argument,		NULL, 'r'},
-	{"no-messages",		no_argument,		NULL, 's'},
-	{"binary",		no_argument,		NULL, 'U'},
-	{"unix-byte-offsets",	no_argument,		NULL, 'u'},
-	{"invert-match",	no_argument,		NULL, 'v'},
-	{"version",		no_argument,		NULL, 'V'},
-	{"word-regexp",		no_argument,		NULL, 'w'},
-	{"line-regexp",		no_argument,		NULL, 'x'},
-	{"null",		no_argument,		NULL, 'Z'},
-	{"null-data",		no_argument,		NULL, 'z'},
-	{NULL,			no_argument,		NULL, 0}
-};
-
-/*
- * Adds a searching pattern to the internal array.
- */
-static void
-add_pattern(char *pat, size_t len)
-{
-
-	/* TODO: Check for empty patterns and shortcut */
-
-	/* Increase size if necessary */
-	if (patterns == pattern_sz) {
-		pattern_sz *= 2;
-		pattern = grep_realloc(pattern, ++pattern_sz *
-		    sizeof(*pattern));
-	}
-	if (len > 0 && pat[len - 1] == '\n')
-		--len;
-	/* pat may not be NUL-terminated */
-	pattern[patterns] = grep_malloc(len + 1);
-	memcpy(pattern[patterns], pat, len);
-	pattern[patterns][len] = '\0';
-	++patterns;
-}
-
-/*
- * Adds a file include/exclude pattern to the internal array.
- */
-static void
-add_fpattern(const char *pat, int mode)
-{
-
-	/* Increase size if necessary */
-	if (fpatterns == fpattern_sz) {
-		fpattern_sz *= 2;
-		fpattern = grep_realloc(fpattern, ++fpattern_sz *
-		    sizeof(struct epat));
-	}
-	fpattern[fpatterns].pat = grep_strdup(pat);
-	fpattern[fpatterns].mode = mode;
-	++fpatterns;
-}
-
-/*
- * Adds a directory include/exclude pattern to the internal array.
- */
-static void
-add_dpattern(const char *pat, int mode)
-{
-
-	/* Increase size if necessary */
-	if (dpatterns == dpattern_sz) {
-		dpattern_sz *= 2;
-		dpattern = grep_realloc(dpattern, ++dpattern_sz *
-		    sizeof(struct epat));
-	}
-	dpattern[dpatterns].pat = grep_strdup(pat);
-	dpattern[dpatterns].mode = mode;
-	++dpatterns;
-}
-
-/*
- * Reads searching patterns from a file and adds them with add_pattern().
- */
-static void
-read_patterns(const char *fn)
-{
-	FILE *f;
-	char *line;
-	size_t len;
-	ssize_t rlen;
-
-	if ((f = fopen(fn, "r")) == NULL)
-		err(2, "%s", fn);
-	line = NULL;
-	len = 0;
-	while ((rlen = getline(&line, &len, f)) != -1)
-		add_pattern(line, *line == '\n' ? 0 : (size_t)rlen);
-	free(line);
-	if (ferror(f))
-		err(2, "%s", fn);
-	fclose(f);
-}
-
-static inline const char *
-init_color(const char *d)
-{
-	char *c;
-
-	c = getenv("GREP_COLOR");
-	return (c != NULL ? c : d);
-}
-
-int
-main(int argc, char *argv[])
-{
-	char **aargv, **eargv, *eopts;
-	char *ep;
-	unsigned long long l;
-	unsigned int aargc, eargc, i, j;
-	int c, lastc, needpattern, newarg, prevoptind;
-
-	setlocale(LC_ALL, "");
-
-#ifndef WITHOUT_NLS
-	catalog = catopen("grep", NL_CAT_LOCALE);
-#endif
-
-	/* Check what is the program name of the binary.  In this
-	   way we can have all the funcionalities in one binary
-	   without the need of scripting and using ugly hacks. */
-	switch (__progname[0]) {
-	case 'e':
-		grepbehave = GREP_EXTENDED;
-		break;
-	case 'f':
-		grepbehave = GREP_FIXED;
-		break;
-	case 'g':
-		grepbehave = GREP_BASIC;
-		break;
-#ifndef WITHOUT_GZIP
-	case 'z':
-		filebehave = FILE_GZIP;
-		switch(__progname[1]) {
-		case 'e':
-			grepbehave = GREP_EXTENDED;
-			break;
-		case 'f':
-			grepbehave = GREP_FIXED;
-			break;
-		case 'g':
-			grepbehave = GREP_BASIC;
-			break;
-		}
-		break;
-#endif
-	}
-
-	lastc = '\0';
-	newarg = 1;
-	prevoptind = 1;
-	needpattern = 1;
-
-	eopts = getenv("GREP_OPTIONS");
-
-	/* support for extra arguments in GREP_OPTIONS */
-	eargc = 0;
-	if (eopts != NULL) {
-		char *str;
-
-		/* make an estimation of how many extra arguments we have */
-		for (j = 0; j < strlen(eopts); j++)
-			if (eopts[j] == ' ')
-				eargc++;
-
-		eargv = (char **)grep_malloc(sizeof(char *) * (eargc + 1));
-
-		eargc = 0;
-		/* parse extra arguments */
-		while ((str = strsep(&eopts, " ")) != NULL)
-			eargv[eargc++] = grep_strdup(str);
-
-		aargv = (char **)grep_calloc(eargc + argc + 1,
-		    sizeof(char *));
-
-		aargv[0] = argv[0];
-		for (i = 0; i < eargc; i++)
-			aargv[i + 1] = eargv[i];
-		for (j = 1; j < (unsigned int)argc; j++, i++)
-			aargv[i + 1] = argv[j];
-
-		aargc = eargc + argc;
-	} else {
-		aargv = argv;
-		aargc = argc;
-	}
-
-	while (((c = getopt_long(aargc, aargv, optstr, long_options, NULL)) !=
-	    -1)) {
-		switch (c) {
-		case '0': case '1': case '2': case '3': case '4':
-		case '5': case '6': case '7': case '8': case '9':
-			if (newarg || !isdigit(lastc))
-				Aflag = 0;
-			else if (Aflag > LLONG_MAX / 10) {
-				errno = ERANGE;
-				err(2, NULL);
-			}
-			Aflag = Bflag = (Aflag * 10) + (c - '0');
-			break;
-		case 'C':
-			if (optarg == NULL) {
-				Aflag = Bflag = 2;
-				break;
-			}
-			/* FALLTHROUGH */
-		case 'A':
-			/* FALLTHROUGH */
-		case 'B':
-			errno = 0;
-			l = strtoull(optarg, &ep, 10);
-			if (((errno == ERANGE) && (l == ULLONG_MAX)) ||
-			    ((errno == EINVAL) && (l == 0)))
-				err(2, NULL);
-			else if (ep[0] != '\0') {
-				errno = EINVAL;
-				err(2, NULL);
-			}
-			if (c == 'A')
-				Aflag = l;
-			else if (c == 'B')
-				Bflag = l;
-			else
-				Aflag = Bflag = l;
-			break;
-		case 'a':
-			binbehave = BINFILE_TEXT;
-			break;
-		case 'b':
-			bflag = true;
-			break;
-		case 'c':
-			cflag = true;
-			break;
-		case 'D':
-			if (strcasecmp(optarg, "skip") == 0)
-				devbehave = DEV_SKIP;
-			else if (strcasecmp(optarg, "read") == 0)
-				devbehave = DEV_READ;
-			else
-				errx(2, getstr(3), "--devices");
-			break;
-		case 'd':
-			if (strcasecmp("recurse", optarg) == 0) {
-				Hflag = true;
-				dirbehave = DIR_RECURSE;
-			} else if (strcasecmp("skip", optarg) == 0)
-				dirbehave = DIR_SKIP;
-			else if (strcasecmp("read", optarg) == 0)
-				dirbehave = DIR_READ;
-			else
-				errx(2, getstr(3), "--directories");
-			break;
-		case 'E':
-			grepbehave = GREP_EXTENDED;
-			break;
-		case 'e':
-			add_pattern(optarg, strlen(optarg));
-			needpattern = 0;
-			break;
-		case 'F':
-			grepbehave = GREP_FIXED;
-			break;
-		case 'f':
-			read_patterns(optarg);
-			needpattern = 0;
-			break;
-		case 'G':
-			grepbehave = GREP_BASIC;
-			break;
-		case 'H':
-			Hflag = true;
-			break;
-		case 'h':
-			Hflag = false;
-			hflag = true;
-			break;
-		case 'I':
-			binbehave = BINFILE_SKIP;
-			break;
-		case 'i':
-		case 'y':
-			iflag =  true;
-			cflags |= REG_ICASE;
-			break;
-#ifndef WITHOUT_BZ2
-		case 'J':
-			filebehave = FILE_BZIP;
-			break;
-#endif
-		case 'L':
-			lflag = false;
-			Lflag = true;
-			break;
-		case 'l':
-			Lflag = false;
-			lflag = true;
-			break;
-		case 'm':
-			mflag = true;
-			errno = 0;
-			mcount = strtoull(optarg, &ep, 10);
-			if (((errno == ERANGE) && (mcount == ULLONG_MAX)) ||
-			    ((errno == EINVAL) && (mcount == 0)))
-				err(2, NULL);
-			else if (ep[0] != '\0') {
-				errno = EINVAL;
-				err(2, NULL);
-			}
-			break;
-		case 'n':
-			nflag = true;
-			break;
-		case 'O':
-			linkbehave = LINK_EXPLICIT;
-			break;
-		case 'o':
-			oflag = true;
-			break;
-		case 'p':
-			linkbehave = LINK_SKIP;
-			break;
-		case 'q':
-			qflag = true;
-			break;
-		case 'S':
-			linkbehave = LINK_READ;
-			break;
-		case 'R':
-		case 'r':
-			dirbehave = DIR_RECURSE;
-			Hflag = true;
-			break;
-		case 's':
-			sflag = true;
-			break;
-		case 'U':
-			binbehave = BINFILE_BIN;
-			break;
-		case 'u':
-		case MMAP_OPT:
-			/* noop, compatibility */
-			break;
-		case 'V':
-			printf(getstr(9), __progname, VERSION);
-			exit(0);
-		case 'v':
-			vflag = true;
-			break;
-		case 'w':
-			wflag = true;
-			break;
-		case 'x':
-			xflag = true;
-			break;
-		case 'Z':
-			nullflag = true;
-			break;
-		case 'z':
-			nulldataflag = true;
-			line_sep = '\0';
-			break;
-		case BIN_OPT:
-			if (strcasecmp("binary", optarg) == 0)
-				binbehave = BINFILE_BIN;
-			else if (strcasecmp("without-match", optarg) == 0)
-				binbehave = BINFILE_SKIP;
-			else if (strcasecmp("text", optarg) == 0)
-				binbehave = BINFILE_TEXT;
-			else
-				errx(2, getstr(3), "--binary-files");
-			break;
-		case COLOR_OPT:
-			color = NULL;
-			if (optarg == NULL || strcasecmp("auto", optarg) == 0 ||
-			    strcasecmp("tty", optarg) == 0 ||
-			    strcasecmp("if-tty", optarg) == 0) {
-				char *term;
-
-				term = getenv("TERM");
-				if (isatty(STDOUT_FILENO) && term != NULL &&
-				    strcasecmp(term, "dumb") != 0)
-					color = init_color("01;31");
-			} else if (strcasecmp("always", optarg) == 0 ||
-			    strcasecmp("yes", optarg) == 0 ||
-			    strcasecmp("force", optarg) == 0) {
-				color = init_color("01;31");
-			} else if (strcasecmp("never", optarg) != 0 &&
-			    strcasecmp("none", optarg) != 0 &&
-			    strcasecmp("no", optarg) != 0)
-				errx(2, getstr(3), "--color");
-			break;
-#ifndef WITHOUT_GZIP
-		case DECOMPRESS_OPT:
-			filebehave = FILE_GZIP;
-			break;
-#endif
-		case LABEL_OPT:
-			label = optarg;
-			break;
-		case LINEBUF_OPT:
-			lbflag = true;
-			break;
-		case R_INCLUDE_OPT:
-			finclude = true;
-			add_fpattern(optarg, INCL_PAT);
-			break;
-		case R_EXCLUDE_OPT:
-			fexclude = true;
-			add_fpattern(optarg, EXCL_PAT);
-			break;
-		case R_DINCLUDE_OPT:
-			dinclude = true;
-			add_dpattern(optarg, INCL_PAT);
-			break;
-		case R_DEXCLUDE_OPT:
-			dexclude = true;
-			add_dpattern(optarg, EXCL_PAT);
-			break;
-		case HELP_OPT:
-		default:
-			usage();
-		}
-		lastc = c;
-		newarg = optind != prevoptind;
-		prevoptind = optind;
-	}
-	aargc -= optind;
-	aargv += optind;
-
-	/* Fail if we don't have any pattern */
-	if (aargc == 0 && needpattern)
-		usage();
-
-	/* Process patterns from command line */
-	if (aargc != 0 && needpattern) {
-		add_pattern(*aargv, strlen(*aargv));
-		--aargc;
-		++aargv;
-	}
-
-	switch (grepbehave) {
-	case GREP_FIXED:
-	case GREP_BASIC:
-		break;
-	case GREP_EXTENDED:
-		cflags |= REG_EXTENDED;
-		break;
-	default:
-		/* NOTREACHED */
-		usage();
-	}
-
-	fg_pattern = grep_calloc(patterns, sizeof(*fg_pattern));
-	r_pattern = grep_calloc(patterns, sizeof(*r_pattern));
-/*
- * XXX: fgrepcomp() and fastcomp() are workarounds for regexec() performance.
- * Optimizations should be done there.
- */
-		/* Check if cheating is allowed (always is for fgrep). */
-	if (grepbehave == GREP_FIXED) {
-		for (i = 0; i < patterns; ++i)
-			fgrepcomp(&fg_pattern[i], pattern[i]);
-	} else {
-		for (i = 0; i < patterns; ++i) {
-			if (fastcomp(&fg_pattern[i], pattern[i])) {
-				/* Fall back to full regex library */
-				c = regcomp(&r_pattern[i], pattern[i], cflags);
-				if (c != 0) {
-					regerror(c, &r_pattern[i], re_error,
-					    RE_ERROR_BUF);
-					errx(2, "%s", re_error);
-				}
-			}
-		}
-	}
-
-	if (lbflag) {
-#ifdef _IOLBF
-		setvbuf(stdout, NULL, _IOLBF, 0);
-#else
-		setlinebuf(stdout);
-#endif
-	}
-
-	if ((aargc == 0 || aargc == 1) && !Hflag)
-		hflag = true;
-
-	if (aargc == 0)
-		exit(!procfile("-"));
-
-	if (dirbehave == DIR_RECURSE)
-		c = grep_tree(aargv);
-	else
-		for (c = 0; aargc--; ++aargv) {
-			if ((finclude || fexclude) && !file_matching(*aargv))
-				continue;
-			c+= procfile(*aargv);
-		}
-
-#ifndef WITHOUT_NLS
-	catclose(catalog);
-#endif
-
-	/* Find out the correct return value according to the
-	   results and the command line option. */
-	exit(c ? (notfound ? (qflag ? 0 : 2) : 0) : (notfound ? 2 : 1));
-}
diff --git a/toolbox/upstream-netbsd/usr.bin/grep/grep.h b/toolbox/upstream-netbsd/usr.bin/grep/grep.h
deleted file mode 100644
index b7ef7fa..0000000
--- a/toolbox/upstream-netbsd/usr.bin/grep/grep.h
+++ /dev/null
@@ -1,162 +0,0 @@
-/*	$NetBSD: grep.h,v 1.10 2018/08/12 09:03:21 christos Exp $	*/
-/*	$OpenBSD: grep.h,v 1.15 2010/04/05 03:03:55 tedu Exp $	*/
-/*	$FreeBSD: head/usr.bin/grep/grep.h 211496 2010-08-19 09:28:59Z des $	*/
-
-/*-
- * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
- * Copyright (c) 2008-2009 Gabor Kovesdan <gabor@FreeBSD.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef WITHOUT_BZ2
-#include <bzlib.h>
-#endif
-#include <limits.h>
-#include <regex.h>
-#include <stdbool.h>
-#include <stdio.h>
-#ifndef WITHOUT_GZIP
-#include <zlib.h>
-#endif
-
-#ifdef WITHOUT_NLS
-#define getstr(n)	 errstr[n]
-#else
-#include <nl_types.h>
-
-extern nl_catd		 catalog;
-#define getstr(n)	 catgets(catalog, 1, n, errstr[n])
-#endif
-
-extern const char		*errstr[];
-
-#define VERSION		"2.5.1-FreeBSD"
-
-#define GREP_FIXED	0
-#define GREP_BASIC	1
-#define GREP_EXTENDED	2
-
-#define BINFILE_BIN	0
-#define BINFILE_SKIP	1
-#define BINFILE_TEXT	2
-
-#define FILE_STDIO	0
-#define FILE_GZIP	1
-#define FILE_BZIP	2
-
-#define DIR_READ	0
-#define DIR_SKIP	1
-#define DIR_RECURSE	2
-
-#define DEV_READ	0
-#define DEV_SKIP	1
-
-#define LINK_READ	0
-#define LINK_EXPLICIT	1
-#define LINK_SKIP	2
-
-#define EXCL_PAT	0
-#define INCL_PAT	1
-
-#define MAX_LINE_MATCHES	32
-
-struct file {
-	int		 fd;
-	bool		 binary;
-};
-
-struct str {
-	off_t		 off;
-	size_t		 len;
-	char		*dat;
-	char		*file;
-	int		 line_no;
-};
-
-struct epat {
-	char		*pat;
-	int		 mode;
-};
-
-typedef struct {
-	size_t		 len;
-	unsigned char	*pattern;
-	int		 qsBc[UCHAR_MAX + 1];
-	/* flags */
-	bool		 bol;
-	bool		 eol;
-	bool		 reversed;
-	bool		 word;
-} fastgrep_t;
-
-/* Flags passed to regcomp() and regexec() */
-extern int	 cflags, eflags;
-
-/* Command line flags */
-extern bool	 Eflag, Fflag, Gflag, Hflag, Lflag,
-		 bflag, cflag, hflag, iflag, lflag, mflag, nflag, oflag,
-		 qflag, sflag, vflag, wflag, xflag;
-extern bool	 dexclude, dinclude, fexclude, finclude, lbflag, nullflag, nulldataflag;
-extern unsigned char line_sep;
-extern unsigned long long Aflag, Bflag, mcount;
-extern char	*label;
-extern const char *color;
-extern int	 binbehave, devbehave, dirbehave, filebehave, grepbehave, linkbehave;
-
-extern bool	 notfound;
-extern int	 tail;
-extern unsigned int dpatterns, fpatterns, patterns;
-extern char    **pattern;
-extern struct epat *dpattern, *fpattern;
-extern regex_t	*er_pattern, *r_pattern;
-extern fastgrep_t *fg_pattern;
-
-/* For regex errors  */
-#define RE_ERROR_BUF	512
-extern char	 re_error[RE_ERROR_BUF + 1];	/* Seems big enough */
-
-/* util.c */
-bool	 file_matching(const char *fname);
-int	 procfile(const char *fn);
-int	 grep_tree(char **argv);
-void	*grep_malloc(size_t size);
-void	*grep_calloc(size_t nmemb, size_t size);
-void	*grep_realloc(void *ptr, size_t size);
-char	*grep_strdup(const char *str);
-void	 printline(struct str *line, int sep, regmatch_t *matches, int m);
-
-/* queue.c */
-void	 enqueue(struct str *x);
-void	 printqueue(void);
-void	 clearqueue(void);
-
-/* file.c */
-void		 grep_close(struct file *f);
-struct file	*grep_open(const char *path);
-char		*grep_fgetln(struct file *f, size_t *len);
-
-/* fastgrep.c */
-int		 fastcomp(fastgrep_t *, const char *);
-void		 fgrepcomp(fastgrep_t *, const char *);
-int		 grep_search(fastgrep_t *, const unsigned char *, size_t, regmatch_t *);
diff --git a/toolbox/upstream-netbsd/usr.bin/grep/queue.c b/toolbox/upstream-netbsd/usr.bin/grep/queue.c
deleted file mode 100644
index e3c6be1..0000000
--- a/toolbox/upstream-netbsd/usr.bin/grep/queue.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*	$NetBSD: queue.c,v 1.5 2011/08/31 16:24:57 plunky Exp $	*/
-/*	$FreeBSD: head/usr.bin/grep/queue.c 211496 2010-08-19 09:28:59Z des $	*/
-/*-
- * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * A really poor man's queue.  It does only what it has to and gets out of
- * Dodge.  It is used in place of <sys/queue.h> to get a better performance.
- */
-
-#if HAVE_NBTOOL_CONFIG_H
-#include "nbtool_config.h"
-#endif
-
-#include <sys/cdefs.h>
-__RCSID("$NetBSD: queue.c,v 1.5 2011/08/31 16:24:57 plunky Exp $");
-
-#include <sys/param.h>
-#include <sys/queue.h>
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "grep.h"
-
-struct qentry {
-	STAILQ_ENTRY(qentry)	list;
-	struct str	 	data;
-};
-
-static STAILQ_HEAD(, qentry)	queue = STAILQ_HEAD_INITIALIZER(queue);
-static unsigned long long	count;
-
-static struct qentry	*dequeue(void);
-
-void
-enqueue(struct str *x)
-{
-	struct qentry *item;
-
-	item = grep_malloc(sizeof(struct qentry));
-	item->data.dat = grep_malloc(sizeof(char) * x->len);
-	item->data.len = x->len;
-	item->data.line_no = x->line_no;
-	item->data.off = x->off;
-	memcpy(item->data.dat, x->dat, x->len);
-	item->data.file = x->file;
-
-	STAILQ_INSERT_TAIL(&queue, item, list);
-
-	if (++count > Bflag) {
-		item = dequeue();
-		free(item->data.dat);
-		free(item);
-	}
-}
-
-static struct qentry *
-dequeue(void)
-{
-	struct qentry *item;
-
-	item = STAILQ_FIRST(&queue);
-	if (item == NULL)
-		return (NULL);
-
-	STAILQ_REMOVE_HEAD(&queue, list);
-	--count;
-	return (item);
-}
-
-void
-printqueue(void)
-{
-	struct qentry *item;
-
-	while ((item = dequeue()) != NULL) {
-		printline(&item->data, '-', NULL, 0);
-		free(item->data.dat);
-		free(item);
-	}
-}
-
-void
-clearqueue(void)
-{
-	struct qentry *item;
-
-	while ((item = dequeue()) != NULL) {
-		free(item->data.dat);
-		free(item);
-	}
-}
diff --git a/toolbox/upstream-netbsd/usr.bin/grep/util.c b/toolbox/upstream-netbsd/usr.bin/grep/util.c
deleted file mode 100644
index a3c9e4c..0000000
--- a/toolbox/upstream-netbsd/usr.bin/grep/util.c
+++ /dev/null
@@ -1,500 +0,0 @@
-/*	$NetBSD: util.c,v 1.19 2018/02/05 22:14:26 mrg Exp $	*/
-/*	$FreeBSD: head/usr.bin/grep/util.c 211496 2010-08-19 09:28:59Z des $	*/
-/*	$OpenBSD: util.c,v 1.39 2010/07/02 22:18:03 tedu Exp $	*/
-
-/*-
- * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
- * Copyright (C) 2008-2010 Gabor Kovesdan <gabor@FreeBSD.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if HAVE_NBTOOL_CONFIG_H
-#include "nbtool_config.h"
-#endif
-
-#include <sys/cdefs.h>
-__RCSID("$NetBSD: util.c,v 1.19 2018/02/05 22:14:26 mrg Exp $");
-
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <ctype.h>
-#include <err.h>
-#include <errno.h>
-#include <fnmatch.h>
-#include <fts.h>
-#include <libgen.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <wchar.h>
-#include <wctype.h>
-
-#include "grep.h"
-
-static bool	 first, first_global = true;
-static unsigned long long since_printed;
-
-static int	 procline(struct str *l, int);
-
-bool
-file_matching(const char *fname)
-{
-	char *fname_base, *fname_copy;
-	unsigned int i;
-	bool ret;
-
-	ret = finclude ? false : true;
-	fname_copy = grep_strdup(fname);
-	fname_base = basename(fname_copy);
-
-	for (i = 0; i < fpatterns; ++i) {
-		if (fnmatch(fpattern[i].pat, fname, 0) == 0 ||
-		    fnmatch(fpattern[i].pat, fname_base, 0) == 0) {
-			if (fpattern[i].mode == EXCL_PAT) {
-				free(fname_copy);
-				return (false);
-			} else
-				ret = true;
-		}
-	}
-	free(fname_copy);
-	return (ret);
-}
-
-static inline bool
-dir_matching(const char *dname)
-{
-	unsigned int i;
-	bool ret;
-
-	ret = dinclude ? false : true;
-
-	for (i = 0; i < dpatterns; ++i) {
-		if (dname != NULL &&
-		    fnmatch(dname, dpattern[i].pat, 0) == 0) {
-			if (dpattern[i].mode == EXCL_PAT)
-				return (false);
-			else
-				ret = true;
-		}
-	}
-	return (ret);
-}
-
-/*
- * Processes a directory when a recursive search is performed with
- * the -R option.  Each appropriate file is passed to procfile().
- */
-int
-grep_tree(char **argv)
-{
-	FTS *fts;
-	FTSENT *p;
-	char *d, *dir = NULL;
-	int c, fts_flags;
-	bool ok;
-
-	c = fts_flags = 0;
-
-	switch(linkbehave) {
-	case LINK_EXPLICIT:
-		fts_flags = FTS_COMFOLLOW;
-		break;
-	case LINK_SKIP:
-		fts_flags = FTS_PHYSICAL;
-		break;
-	default:
-		fts_flags = FTS_LOGICAL;
-			
-	}
-
-	fts_flags |= FTS_NOSTAT | FTS_NOCHDIR;
-
-	if (!(fts = fts_open(argv, fts_flags, NULL)))
-		err(2, "fts_open");
-	while ((p = fts_read(fts)) != NULL) {
-		switch (p->fts_info) {
-		case FTS_DNR:
-			/* FALLTHROUGH */
-		case FTS_ERR:
-			errx(2, "%s: %s", p->fts_path, strerror(p->fts_errno));
-			break;
-		case FTS_D:
-			/* FALLTHROUGH */
-		case FTS_DP:
-			break;
-		case FTS_DC:
-			/* Print a warning for recursive directory loop */
-			warnx("warning: %s: recursive directory loop",
-				p->fts_path);
-			break;
-		default:
-			/* Check for file exclusion/inclusion */
-			ok = true;
-			if (dexclude || dinclude) {
-				if ((d = strrchr(p->fts_path, '/')) != NULL) {
-					dir = grep_malloc(sizeof(char) *
-					    (d - p->fts_path + 1));
-					memcpy(dir, p->fts_path,
-					    d - p->fts_path);
-					dir[d - p->fts_path] = '\0';
-				}
-				ok = dir_matching(dir);
-				free(dir);
-				dir = NULL;
-			}
-			if (fexclude || finclude)
-				ok &= file_matching(p->fts_path);
-
-			if (ok)
-				c += procfile(p->fts_path);
-			break;
-		}
-	}
-
-	fts_close(fts);
-	return (c);
-}
-
-/*
- * Opens a file and processes it.  Each file is processed line-by-line
- * passing the lines to procline().
- */
-int
-procfile(const char *fn)
-{
-	struct file *f;
-	struct stat sb;
-	struct str ln;
-	mode_t s;
-	int c, t;
-
-	if (mflag && (mcount <= 0))
-		return (0);
-
-	if (strcmp(fn, "-") == 0) {
-		fn = label != NULL ? label : getstr(1);
-		f = grep_open(NULL);
-	} else {
-		if (!stat(fn, &sb)) {
-			/* Check if we need to process the file */
-			s = sb.st_mode & S_IFMT;
-			if (s == S_IFDIR && dirbehave == DIR_SKIP)
-				return (0);
-			if ((s == S_IFIFO || s == S_IFCHR || s == S_IFBLK
-				|| s == S_IFSOCK) && devbehave == DEV_SKIP)
-					return (0);
-		}
-		f = grep_open(fn);
-	}
-	if (f == NULL) {
-		if (!sflag)
-			warn("%s", fn);
-		if (errno == ENOENT)
-			notfound = true;
-		return (0);
-	}
-
-	ln.file = grep_malloc(strlen(fn) + 1);
-	strcpy(ln.file, fn);
-	ln.line_no = 0;
-	ln.len = 0;
-	tail = 0;
-	ln.off = -1;
-
-	for (first = true, c = 0;  c == 0 || !(lflag || qflag); ) {
-		ln.off += ln.len + 1;
-		if ((ln.dat = grep_fgetln(f, &ln.len)) == NULL || ln.len == 0)
-			break;
-		if (ln.len > 0 && ln.dat[ln.len - 1] == line_sep)
-			--ln.len;
-		ln.line_no++;
-
-		/* Return if we need to skip a binary file */
-		if (f->binary && binbehave == BINFILE_SKIP) {
-			grep_close(f);
-			free(ln.file);
-			free(f);
-			return (0);
-		}
-		/* Process the file line-by-line */
-		t = procline(&ln, f->binary);
-		c += t;
-
-		/* Count the matches if we have a match limit */
-		if (mflag) {
-			mcount -= t;
-			if (mcount <= 0)
-				break;
-		}
-	}
-	if (Bflag > 0)
-		clearqueue();
-	grep_close(f);
-
-	if (cflag) {
-		if (!hflag)
-			printf("%s:", ln.file);
-		printf("%u%c", c, line_sep);
-	}
-	if (lflag && !qflag && c != 0)
-		printf("%s%c", fn, line_sep);
-	if (Lflag && !qflag && c == 0)
-		printf("%s%c", fn, line_sep);
-	if (c && !cflag && !lflag && !Lflag &&
-	    binbehave == BINFILE_BIN && f->binary && !qflag)
-		printf(getstr(8), fn);
-
-	free(ln.file);
-	free(f);
-	return (c);
-}
-
-#define iswword(x)	(iswalnum((x)) || (x) == L'_')
-
-/*
- * Processes a line comparing it with the specified patterns.  Each pattern
- * is looped to be compared along with the full string, saving each and every
- * match, which is necessary to colorize the output and to count the
- * matches.  The matching lines are passed to printline() to display the
- * appropriate output.
- */
-static int
-procline(struct str *l, int nottext)
-{
-	regmatch_t matches[MAX_LINE_MATCHES];
-	regmatch_t pmatch;
-	size_t st = 0;
-	unsigned int i;
-	int c = 0, m = 0, r = 0;
-
-	/* Loop to process the whole line */
-	while (st <= l->len) {
-		pmatch.rm_so = st;
-		pmatch.rm_eo = l->len;
-
-		/* Loop to compare with all the patterns */
-		for (i = 0; i < patterns; i++) {
-/*
- * XXX: grep_search() is a workaround for speed up and should be
- * removed in the future.  See fastgrep.c.
- */
-			if (fg_pattern[i].pattern) {
-				r = grep_search(&fg_pattern[i],
-				    (unsigned char *)l->dat,
-				    l->len, &pmatch);
-				r = (r == 0) ? 0 : REG_NOMATCH;
-				st = pmatch.rm_eo;
-			} else {
-				r = regexec(&r_pattern[i], l->dat, 1,
-				    &pmatch, eflags);
-				r = (r == 0) ? 0 : REG_NOMATCH;
-				st = pmatch.rm_eo;
-			}
-			if (r == REG_NOMATCH)
-				continue;
-			/* Check for full match */
-			if (xflag &&
-			    (pmatch.rm_so != 0 ||
-			     (size_t)pmatch.rm_eo != l->len))
-				continue;
-			/* Check for whole word match */
-			if (fg_pattern[i].word && pmatch.rm_so != 0) {
-				wchar_t wbegin, wend;
-
-				wbegin = wend = L' ';
-				if (pmatch.rm_so != 0 &&
-				    sscanf(&l->dat[pmatch.rm_so - 1],
-				    "%lc", &wbegin) != 1)
-					continue;
-				if ((size_t)pmatch.rm_eo != l->len &&
-				    sscanf(&l->dat[pmatch.rm_eo],
-				    "%lc", &wend) != 1)
-					continue;
-				if (iswword(wbegin) || iswword(wend))
-					continue;
-			}
-			c = 1;
-			if (m < MAX_LINE_MATCHES)
-				matches[m++] = pmatch;
-			/* matches - skip further patterns */
-			if ((color != NULL && !oflag) || qflag || lflag)
-				break;
-		}
-
-		if (vflag) {
-			c = !c;
-			break;
-		}
-		/* One pass if we are not recording matches */
-		if ((color != NULL && !oflag) || qflag || lflag)
-			break;
-
-		if (st == (size_t)pmatch.rm_so)
-			break; 	/* No matches */
-	}
-
-	if (c && binbehave == BINFILE_BIN && nottext)
-		return (c); /* Binary file */
-
-	/* Dealing with the context */
-	if ((tail || c) && !cflag && !qflag && !lflag && !Lflag) {
-		if (c) {
-			if ((Aflag || Bflag) && !first_global &&
-			    (first || since_printed > Bflag))
-				printf("--\n");
-			tail = Aflag;
-			if (Bflag > 0)
-				printqueue();
-			printline(l, ':', matches, m);
-		} else {
-			printline(l, '-', matches, m);
-			tail--;
-		}
-		first = false;
-		first_global = false;
-		since_printed = 0;
-	} else {
-		if (Bflag)
-			enqueue(l);
-		since_printed++;
-	}
-	return (c);
-}
-
-/*
- * Safe malloc() for internal use.
- */
-void *
-grep_malloc(size_t size)
-{
-	void *ptr;
-
-	if ((ptr = malloc(size)) == NULL)
-		err(2, "malloc");
-	return (ptr);
-}
-
-/*
- * Safe calloc() for internal use.
- */
-void *
-grep_calloc(size_t nmemb, size_t size)
-{
-	void *ptr;
-
-	if ((ptr = calloc(nmemb, size)) == NULL)
-		err(2, "calloc");
-	return (ptr);
-}
-
-/*
- * Safe realloc() for internal use.
- */
-void *
-grep_realloc(void *ptr, size_t size)
-{
-
-	if ((ptr = realloc(ptr, size)) == NULL)
-		err(2, "realloc");
-	return (ptr);
-}
-
-/*
- * Safe strdup() for internal use.
- */
-char *
-grep_strdup(const char *str)
-{
-	char *ret;
-
-	if ((ret = strdup(str)) == NULL)
-		err(2, "strdup");
-	return (ret);
-}
-
-/*
- * Prints a matching line according to the command line options.
- */
-void
-printline(struct str *line, int sep, regmatch_t *matches, int m)
-{
-	size_t a = 0;
-	int i, n = 0;
-
-	if (!hflag) {
-		if (nullflag == 0)
-			fputs(line->file, stdout);
-		else {
-			printf("%s", line->file);
-			putchar(0);
-		}
-		++n;
-	}
-	if (nflag) {
-		if (n > 0)
-			putchar(sep);
-		printf("%d", line->line_no);
-		++n;
-	}
-	if (bflag) {
-		if (n > 0)
-			putchar(sep);
-		printf("%lld", (long long)line->off);
-		++n;
-	}
-	if (n)
-		putchar(sep);
-	/* --color and -o */
-	if ((oflag || color) && m > 0) {
-		for (i = 0; i < m; i++) {
-			if (!oflag)
-				fwrite(line->dat + a, matches[i].rm_so - a, 1,
-				    stdout);
-			if (color) 
-				fprintf(stdout, "\33[%sm\33[K", color);
-
-			fwrite(line->dat + matches[i].rm_so, 
-			    matches[i].rm_eo - matches[i].rm_so, 1,
-			    stdout);
-
-			if (color) 
-				fprintf(stdout, "\33[m\33[K");
-			a = matches[i].rm_eo;
-			if (oflag)
-				putchar('\n');
-		}
-		if (!oflag) {
-			if (line->len - a > 0)
-				fwrite(line->dat + a, line->len - a, 1, stdout);
-			putchar(line_sep);
-		}
-	} else {
-		fwrite(line->dat, line->len, 1, stdout);
-		putchar(line_sep);
-	}
-}
diff --git a/trusty/Android.bp b/trusty/Android.bp
deleted file mode 100644
index 2fb2e19..0000000
--- a/trusty/Android.bp
+++ /dev/null
@@ -1,6 +0,0 @@
-subdirs = [
-    "gatekeeper",
-    "keymaster",
-    "libtrusty",
-    "storage/*",
-]
diff --git a/trusty/OWNERS b/trusty/OWNERS
index e807d71..1fb473e 100644
--- a/trusty/OWNERS
+++ b/trusty/OWNERS
@@ -2,6 +2,8 @@
 dkrahn@google.com
 drewry@google.com
 gmar@google.com
+mmaurer@google.com
 ncbray@google.com
-rpere@google.com
 swillden@google.com
+trong@google.com
+wenhaowang@google.com
diff --git a/trusty/confirmationui/.clang-format b/trusty/confirmationui/.clang-format
new file mode 100644
index 0000000..b0dc94c
--- /dev/null
+++ b/trusty/confirmationui/.clang-format
@@ -0,0 +1,10 @@
+BasedOnStyle: LLVM
+IndentWidth: 4
+UseTab: Never
+BreakBeforeBraces: Attach
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: true
+IndentCaseLabels: false
+ColumnLimit: 100
+PointerBindsToType: true
+SpacesBeforeTrailingComments: 2
diff --git a/trusty/confirmationui/Android.bp b/trusty/confirmationui/Android.bp
new file mode 100644
index 0000000..60e0e71
--- /dev/null
+++ b/trusty/confirmationui/Android.bp
@@ -0,0 +1,95 @@
+// Copyright (C) 2020 The Android Open-Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// WARNING: Everything listed here will be built on ALL platforms,
+// including x86, the emulator, and the SDK.  Modules must be uniquely
+// named (liblights.panda), and must build everywhere, or limit themselves
+// to only building on ARM if they include assembly. Individual makefiles
+// are responsible for having their own logic, for fine-grained control.
+
+cc_binary {
+    name: "android.hardware.confirmationui@1.0-service.trusty",
+    relative_install_path: "hw",
+    vendor: true,
+    shared_libs: [
+        "android.hardware.confirmationui@1.0",
+        "android.hardware.confirmationui.not-so-secure-input",
+        "android.hardware.confirmationui@1.0-lib.trusty",
+        "libbase",
+        "libhidlbase",
+        "libutils",
+    ],
+
+    init_rc: ["android.hardware.confirmationui@1.0-service.trusty.rc"],
+
+    vintf_fragments: ["android.hardware.confirmationui@1.0-service.trusty.xml"],
+
+    srcs: [
+        "service.cpp",
+    ],
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-DTEEUI_USE_STD_VECTOR",
+    ],
+}
+
+cc_library {
+    name: "android.hardware.confirmationui@1.0-lib.trusty",
+    vendor: true,
+    shared_libs: [
+        "android.hardware.confirmationui@1.0",
+        "android.hardware.keymaster@4.0",
+        "libbase",
+        "libhidlbase",
+        "libteeui_hal_support",
+        "libtrusty",
+        "libutils",
+    ],
+
+    export_include_dirs: ["include"],
+
+    srcs: [
+        "TrustyApp.cpp",
+        "TrustyConfirmationUI.cpp",
+    ],
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-DTEEUI_USE_STD_VECTOR",
+    ],
+}
+
+cc_library {
+    name: "android.hardware.confirmationui.not-so-secure-input",
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libteeui_hal_support",
+    ],
+
+    srcs: [
+        "NotSoSecureInput.cpp",
+    ],
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-DTEEUI_USE_STD_VECTOR",
+    ],
+}
\ No newline at end of file
diff --git a/trusty/confirmationui/NotSoSecureInput.cpp b/trusty/confirmationui/NotSoSecureInput.cpp
new file mode 100644
index 0000000..3d9a2d6
--- /dev/null
+++ b/trusty/confirmationui/NotSoSecureInput.cpp
@@ -0,0 +1,207 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <endian.h>
+#include <memory>
+#include <openssl/hmac.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+#include <secure_input/evdev.h>
+#include <secure_input/secure_input_device.h>
+#include <teeui/utils.h>
+
+#include <initializer_list>
+
+using namespace secure_input;
+
+using teeui::AuthTokenKey;
+using teeui::ByteBufferProxy;
+using teeui::Hmac;
+using teeui::optional;
+using teeui::ResponseCode;
+using teeui::TestKeyBits;
+
+constexpr const auto kTestKey = AuthTokenKey::fill(static_cast<uint8_t>(TestKeyBits::BYTE));
+
+class SecureInputHMacer {
+  public:
+    static optional<Hmac> hmac256(const AuthTokenKey& key,
+                                  std::initializer_list<ByteBufferProxy> buffers) {
+        HMAC_CTX hmacCtx;
+        HMAC_CTX_init(&hmacCtx);
+        if (!HMAC_Init_ex(&hmacCtx, key.data(), key.size(), EVP_sha256(), nullptr)) {
+            return {};
+        }
+        for (auto& buffer : buffers) {
+            if (!HMAC_Update(&hmacCtx, buffer.data(), buffer.size())) {
+                return {};
+            }
+        }
+        Hmac result;
+        if (!HMAC_Final(&hmacCtx, result.data(), nullptr)) {
+            return {};
+        }
+        return result;
+    }
+};
+
+using HMac = teeui::HMac<SecureInputHMacer>;
+
+Nonce generateNonce() {
+    /*
+     * Completely random nonce.
+     * Running the secure input protocol from the HAL service is not secure
+     * because we don't trust the non-secure world (i.e., HLOS/Android/Linux). So
+     * using a constant "nonce" here does not weaken security. If this code runs
+     * on a truly trustworthy source of input events this function needs to return
+     * hight entropy nonces.
+     * As of this writing the call to RAND_bytes is commented, because the
+     * emulator this HAL service runs on does not have a good source of entropy.
+     * It would block the call to RAND_bytes indefinitely.
+     */
+    Nonce result{0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
+                 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
+                 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04};
+    // RAND_bytes(result.data(), result.size());
+    return result;
+}
+
+/**
+ * This is an implementation of the SecureInput protocol in unserspace. This is
+ * just an example and should not be used as is. The protocol implemented her
+ * should be used by a trusted input device that can assert user events with
+ * high assurance even if the HLOS kernel is compromised. A confirmationui HAL
+ * that links directly against this implementation is not secure and shal not be
+ * used on a production device.
+ */
+class NotSoSecureInput : public SecureInput {
+  public:
+    NotSoSecureInput(HsBeginCb hsBeginCb, HsFinalizeCb hsFinalizeCb, DeliverEventCb deliverEventCb,
+                     InputResultCb inputResultCb)
+        : hsBeginCb_{hsBeginCb}, hsFinalizeCb_{hsFinalizeCb}, deliverEventCb_{deliverEventCb},
+          inputResultCb_{inputResultCb}, discardEvents_{true} {}
+
+    operator bool() const override { return true; }
+
+    void handleEvent(const EventDev& evdev) override {
+        bool gotEvent;
+        input_event evt;
+        std::tie(gotEvent, evt) = evdev.readEvent();
+        while (gotEvent) {
+            if (!(discardEvents_) && evt.type == EV_KEY &&
+                (evt.code == KEY_POWER || evt.code == KEY_VOLUMEDOWN || evt.code == KEY_VOLUMEUP) &&
+                evt.value == 1) {
+                DTupKeyEvent event = DTupKeyEvent::RESERVED;
+
+                // Translate the event code into DTupKeyEvent which the TA understands.
+                switch (evt.code) {
+                case KEY_POWER:
+                    event = DTupKeyEvent::PWR;
+                    break;
+                case KEY_VOLUMEDOWN:
+                    event = DTupKeyEvent::VOL_DOWN;
+                    break;
+                case KEY_VOLUMEUP:
+                    event = DTupKeyEvent::VOL_UP;
+                    break;
+                }
+
+                // The event goes into the HMAC in network byte order.
+                uint32_t keyEventBE = htobe32(static_cast<uint32_t>(event));
+                auto signature = HMac::hmac256(kTestKey, kConfirmationUIEventLabel,
+                                               teeui::bytesCast(keyEventBE), nCi_);
+
+                teeui::ResponseCode rc;
+                InputResponse ir;
+                auto response = std::tie(rc, ir);
+                if (event != DTupKeyEvent::RESERVED) {
+                    response = deliverEventCb_(event, *signature);
+                    if (rc != ResponseCode::OK) {
+                        LOG(ERROR) << "DeliverInputEvent returned with " << uint32_t(rc);
+                        inputResultCb_(rc);
+                    } else {
+                        switch (ir) {
+                        case InputResponse::OK:
+                            inputResultCb_(rc);
+                            break;
+                        case InputResponse::PENDING_MORE:
+                            rc = performDTUPHandshake();
+                            if (rc != ResponseCode::OK) {
+                                inputResultCb_(rc);
+                            }
+                            break;
+                        case InputResponse::TIMED_OUT:
+                            inputResultCb_(rc);
+                            break;
+                        }
+                    }
+                }
+            }
+            std::tie(gotEvent, evt) = evdev.readEvent();
+        }
+    }
+
+    void start() override {
+        auto rc = performDTUPHandshake();
+        if (rc != ResponseCode::OK) {
+            inputResultCb_(rc);
+        }
+        discardEvents_ = false;
+    };
+
+  private:
+    teeui::ResponseCode performDTUPHandshake() {
+        ResponseCode rc;
+        LOG(INFO) << "Start handshake";
+        Nonce nCo;
+        std::tie(rc, nCo) = hsBeginCb_();
+        if (rc != ResponseCode::OK) {
+            LOG(ERROR) << "Failed to begin secure input handshake (" << uint32_t(rc) << ")";
+            return rc;
+        }
+
+        nCi_ = generateNonce();
+        rc =
+            hsFinalizeCb_(*HMac::hmac256(kTestKey, kConfirmationUIHandshakeLabel, nCo, nCi_), nCi_);
+
+        if (rc != ResponseCode::OK) {
+            LOG(ERROR) << "Failed to finalize secure input handshake (" << uint32_t(rc) << ")";
+            return rc;
+        }
+        return ResponseCode::OK;
+    }
+
+    HsBeginCb hsBeginCb_;
+    HsFinalizeCb hsFinalizeCb_;
+    DeliverEventCb deliverEventCb_;
+    InputResultCb inputResultCb_;
+
+    std::atomic_bool discardEvents_;
+    Nonce nCi_;
+};
+
+namespace secure_input {
+
+std::shared_ptr<SecureInput> createSecureInput(SecureInput::HsBeginCb hsBeginCb,
+                                               SecureInput::HsFinalizeCb hsFinalizeCb,
+                                               SecureInput::DeliverEventCb deliverEventCb,
+                                               SecureInput::InputResultCb inputResultCb) {
+    return std::make_shared<NotSoSecureInput>(hsBeginCb, hsFinalizeCb, deliverEventCb,
+                                              inputResultCb);
+}
+
+}  // namespace secure_input
diff --git a/trusty/confirmationui/README b/trusty/confirmationui/README
new file mode 100644
index 0000000..45d4e76
--- /dev/null
+++ b/trusty/confirmationui/README
@@ -0,0 +1,20 @@
+## Secure UI Architecture
+
+To implement confirmationui a secure UI architecture is required. This entails a way
+to display the confirmation dialog driven by a reduced trusted computing base, typically
+a trusted execution environment (TEE), without having to rely on Linux and the Android
+system for integrity and authenticity of input events. This implementation provides
+neither. But it provides most of the functionlity required to run a full Android Protected
+Confirmation feature when integrated into a secure UI architecture.
+
+## Secure input (NotSoSecureInput)
+
+This implementation does not provide any security guaranties.
+The input method (NotSoSecureInput) runs a cryptographic protocols that is
+sufficiently secure IFF the end point is implemented on a trustworthy
+secure input device. But since the endpoint is currently in the HAL
+service itself this implementation is not secure.
+
+NOTE that a secure input device end point needs a good source of entropy
+for generating nonces. The current implementation (NotSoSecureInput.cpp#generateNonce)
+uses a constant nonce.
\ No newline at end of file
diff --git a/trusty/confirmationui/TrustyApp.cpp b/trusty/confirmationui/TrustyApp.cpp
new file mode 100644
index 0000000..e4c68f9
--- /dev/null
+++ b/trusty/confirmationui/TrustyApp.cpp
@@ -0,0 +1,156 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "TrustyApp.h"
+
+#include <android-base/logging.h>
+#include <sys/uio.h>
+#include <trusty/tipc.h>
+
+namespace android {
+namespace trusty {
+
+// 0x1000 is the message buffer size but we need to leave some space for a protocol header.
+// This assures that packets can always be read/written in one read/write operation.
+static constexpr const uint32_t kPacketSize = 0x1000 - 32;
+
+enum class PacketType : uint32_t {
+    SND,
+    RCV,
+    ACK,
+};
+
+struct PacketHeader {
+    PacketType type;
+    uint32_t remaining;
+};
+
+const char* toString(PacketType t) {
+    switch (t) {
+    case PacketType::SND:
+        return "SND";
+    case PacketType::RCV:
+        return "RCV";
+    case PacketType::ACK:
+        return "ACK";
+    default:
+        return "UNKNOWN";
+    }
+}
+
+static constexpr const uint32_t kHeaderSize = sizeof(PacketHeader);
+static constexpr const uint32_t kPayloadSize = kPacketSize - kHeaderSize;
+
+ssize_t TrustyRpc(int handle, const uint8_t* obegin, const uint8_t* oend, uint8_t* ibegin,
+                  uint8_t* iend) {
+    while (obegin != oend) {
+        PacketHeader header = {
+            .type = PacketType::SND,
+            .remaining = uint32_t(oend - obegin),
+        };
+        uint32_t body_size = std::min(kPayloadSize, header.remaining);
+        iovec iov[] = {
+            {
+                .iov_base = &header,
+                .iov_len = kHeaderSize,
+            },
+            {
+                .iov_base = const_cast<uint8_t*>(obegin),
+                .iov_len = body_size,
+            },
+        };
+        int rc = writev(handle, iov, 2);
+        if (!rc) {
+            PLOG(ERROR) << "Error sending SND message. " << rc;
+            return rc;
+        }
+
+        obegin += body_size;
+
+        rc = read(handle, &header, kHeaderSize);
+        if (!rc) {
+            PLOG(ERROR) << "Error reading ACK. " << rc;
+            return rc;
+        }
+
+        if (header.type != PacketType::ACK || header.remaining != oend - obegin) {
+            LOG(ERROR) << "malformed ACK";
+            return -1;
+        }
+    }
+
+    ssize_t remaining = 0;
+    auto begin = ibegin;
+    do {
+        PacketHeader header = {
+            .type = PacketType::RCV,
+            .remaining = 0,
+        };
+
+        iovec iov[] = {
+            {
+                .iov_base = &header,
+                .iov_len = kHeaderSize,
+            },
+            {
+                .iov_base = begin,
+                .iov_len = uint32_t(iend - begin),
+            },
+        };
+
+        ssize_t rc = writev(handle, iov, 1);
+        if (!rc) {
+            PLOG(ERROR) << "Error sending RCV message. " << rc;
+            return rc;
+        }
+
+        rc = readv(handle, iov, 2);
+        if (rc < 0) {
+            PLOG(ERROR) << "Error reading response. " << rc;
+            return rc;
+        }
+
+        uint32_t body_size = std::min(kPayloadSize, header.remaining);
+        if (body_size != rc - kHeaderSize) {
+            LOG(ERROR) << "Unexpected amount of data: " << rc;
+            return -1;
+        }
+
+        remaining = header.remaining - body_size;
+        begin += body_size;
+    } while (remaining);
+
+    return begin - ibegin;
+}
+
+TrustyApp::TrustyApp(const std::string& path, const std::string& appname)
+    : handle_(kInvalidHandle) {
+    handle_ = tipc_connect(path.c_str(), appname.c_str());
+    if (handle_ == kInvalidHandle) {
+        LOG(ERROR) << AT << "failed to connect to Trusty TA \"" << appname << "\" using dev:"
+                   << "\"" << path << "\"";
+    }
+    LOG(INFO) << AT << "succeeded to connect to Trusty TA \"" << appname << "\"";
+}
+TrustyApp::~TrustyApp() {
+    if (handle_ != kInvalidHandle) {
+        tipc_close(handle_);
+    }
+    LOG(INFO) << "Done shutting down TrustyApp";
+}
+
+}  // namespace trusty
+}  // namespace android
diff --git a/trusty/confirmationui/TrustyApp.h b/trusty/confirmationui/TrustyApp.h
new file mode 100644
index 0000000..05a25f6
--- /dev/null
+++ b/trusty/confirmationui/TrustyApp.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/logging.h>
+#include <errno.h>
+#include <poll.h>
+#include <stdio.h>
+#include <sys/eventfd.h>
+#include <sys/stat.h>
+#include <teeui/msg_formatting.h>
+#include <trusty/tipc.h>
+#include <unistd.h>
+
+#include <fstream>
+#include <functional>
+#include <future>
+#include <iostream>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+#define AT __FILE__ ":" << __LINE__ << ": "
+
+namespace android {
+namespace trusty {
+
+using ::teeui::Message;
+using ::teeui::msg2tuple_t;
+using ::teeui::ReadStream;
+using ::teeui::WriteStream;
+
+#ifndef TEEUI_USE_STD_VECTOR
+/*
+ * TEEUI_USE_STD_VECTOR makes certain wire types like teeui::MsgString and
+ * teeui::MsgVector be aliases for std::vector. This is required for thread safe
+ * message serialization. Always compile this with -DTEEUI_USE_STD_VECTOR set in
+ * CFLAGS of the HAL service.
+ */
+#error "Must be compiled with -DTEEUI_USE_STD_VECTOR."
+#endif
+
+enum class TrustyAppError : int32_t {
+    OK,
+    ERROR = -1,
+    MSG_TOO_LONG = -2,
+};
+
+/*
+ * There is a hard limitation of 0x1800 bytes for the to-be-signed message size. The protocol
+ * overhead is limited, so that 0x2000 is a buffer size that will be sufficient in any benign
+ * mode of operation.
+ */
+static constexpr const size_t kSendBufferSize = 0x2000;
+
+ssize_t TrustyRpc(int handle, const uint8_t* obegin, const uint8_t* oend, uint8_t* ibegin,
+                  uint8_t* iend);
+
+class TrustyApp {
+  private:
+    int handle_;
+    static constexpr const int kInvalidHandle = -1;
+    /*
+     * This mutex serializes communication with the trusted app, not handle_.
+     * Calling issueCmd during construction or deletion is undefined behavior.
+     */
+    std::mutex mutex_;
+
+  public:
+    TrustyApp(const std::string& path, const std::string& appname);
+    ~TrustyApp();
+
+    template <typename Request, typename Response, typename... T>
+    std::tuple<TrustyAppError, msg2tuple_t<Response>> issueCmd(const T&... args) {
+        std::lock_guard<std::mutex> lock(mutex_);
+
+        if (handle_ == kInvalidHandle) {
+            LOG(ERROR) << "TrustyApp not connected";
+            return {TrustyAppError::ERROR, {}};
+        }
+
+        uint8_t buffer[kSendBufferSize];
+        WriteStream out(buffer);
+
+        out = write(Request(), out, args...);
+        if (!out) {
+            LOG(ERROR) << AT << "send command failed: message formatting";
+            return {TrustyAppError::MSG_TOO_LONG, {}};
+        }
+
+        auto rc = TrustyRpc(handle_, &buffer[0], const_cast<const uint8_t*>(out.pos()), &buffer[0],
+                            &buffer[kSendBufferSize]);
+        if (rc < 0) return {TrustyAppError::ERROR, {}};
+
+        ReadStream in(&buffer[0], rc);
+        auto result = read(Response(), in);
+        if (!std::get<0>(result)) {
+            LOG(ERROR) << "send command failed: message parsing";
+            return {TrustyAppError::ERROR, {}};
+        }
+
+        return {std::get<0>(result) ? TrustyAppError::OK : TrustyAppError::ERROR,
+                tuple_tail(std::move(result))};
+    }
+
+    template <typename Request, typename... T> TrustyAppError issueCmd(const T&... args) {
+        std::lock_guard<std::mutex> lock(mutex_);
+
+        if (handle_ == kInvalidHandle) {
+            LOG(ERROR) << "TrustyApp not connected";
+            return TrustyAppError::ERROR;
+        }
+
+        uint8_t buffer[kSendBufferSize];
+        WriteStream out(buffer);
+
+        out = write(Request(), out, args...);
+        if (!out) {
+            LOG(ERROR) << AT << "send command failed: message formatting";
+            return TrustyAppError::MSG_TOO_LONG;
+        }
+
+        auto rc = TrustyRpc(handle_, &buffer[0], const_cast<const uint8_t*>(out.pos()), &buffer[0],
+                            &buffer[kSendBufferSize]);
+        if (rc < 0) {
+            LOG(ERROR) << "send command failed: " << strerror(errno) << " (" << errno << ")";
+            return TrustyAppError::ERROR;
+        }
+
+        if (rc > 0) {
+            LOG(ERROR) << "Unexpected non zero length response";
+            return TrustyAppError::ERROR;
+        }
+        return TrustyAppError::OK;
+    }
+
+    operator bool() const { return handle_ != kInvalidHandle; }
+};
+
+}  // namespace trusty
+}  // namespace android
diff --git a/trusty/confirmationui/TrustyConfirmationUI.cpp b/trusty/confirmationui/TrustyConfirmationUI.cpp
new file mode 100644
index 0000000..6b25893
--- /dev/null
+++ b/trusty/confirmationui/TrustyConfirmationUI.cpp
@@ -0,0 +1,513 @@
+/*
+ *
+ * Copyright 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "TrustyConfirmationUI.h"
+
+#include <android-base/logging.h>
+#include <android/hardware/confirmationui/1.0/types.h>
+#include <android/hardware/keymaster/4.0/types.h>
+#include <fcntl.h>
+#include <linux/input.h>
+#include <poll.h>
+#include <pthread.h>
+#include <secure_input/evdev.h>
+#include <secure_input/secure_input_device.h>
+#include <secure_input/secure_input_proto.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <teeui/msg_formatting.h>
+#include <teeui/utils.h>
+#include <time.h>
+
+#include <atomic>
+#include <functional>
+#include <memory>
+#include <thread>
+#include <tuple>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace confirmationui {
+namespace V1_0 {
+namespace implementation {
+
+using namespace secure_input;
+
+using ::android::trusty::TrustyAppError;
+
+using ::teeui::AbortMsg;
+using ::teeui::DeliverTestCommandMessage;
+using ::teeui::DeliverTestCommandResponse;
+using ::teeui::FetchConfirmationResult;
+using ::teeui::MsgString;
+using ::teeui::MsgVector;
+using ::teeui::PromptUserConfirmationMsg;
+using ::teeui::PromptUserConfirmationResponse;
+using ::teeui::ResultMsg;
+
+using ::secure_input::createSecureInput;
+
+using ::android::hardware::keymaster::V4_0::HardwareAuthToken;
+
+using ::std::tie;
+
+using TeeuiRc = ::teeui::ResponseCode;
+
+constexpr const char kTrustyDeviceName[] = "/dev/trusty-ipc-dev0";
+constexpr const char kConfirmationuiAppName[] = "com.android.trusty.confirmationui";
+
+namespace {
+
+class Finalize {
+  private:
+    std::function<void()> f_;
+
+  public:
+    Finalize(std::function<void()> f) : f_(f) {}
+    ~Finalize() {
+        if (f_) f_();
+    }
+    void release() { f_ = {}; }
+};
+
+ResponseCode convertRc(TeeuiRc trc) {
+    static_assert(
+        uint32_t(TeeuiRc::OK) == uint32_t(ResponseCode::OK) &&
+            uint32_t(TeeuiRc::Canceled) == uint32_t(ResponseCode::Canceled) &&
+            uint32_t(TeeuiRc::Aborted) == uint32_t(ResponseCode::Aborted) &&
+            uint32_t(TeeuiRc::OperationPending) == uint32_t(ResponseCode::OperationPending) &&
+            uint32_t(TeeuiRc::Ignored) == uint32_t(ResponseCode::Ignored) &&
+            uint32_t(TeeuiRc::SystemError) == uint32_t(ResponseCode::SystemError) &&
+            uint32_t(TeeuiRc::Unimplemented) == uint32_t(ResponseCode::Unimplemented) &&
+            uint32_t(TeeuiRc::Unexpected) == uint32_t(ResponseCode::Unexpected) &&
+            uint32_t(TeeuiRc::UIError) == uint32_t(ResponseCode::UIError) &&
+            uint32_t(TeeuiRc::UIErrorMissingGlyph) == uint32_t(ResponseCode::UIErrorMissingGlyph) &&
+            uint32_t(TeeuiRc::UIErrorMessageTooLong) ==
+                uint32_t(ResponseCode::UIErrorMessageTooLong) &&
+            uint32_t(TeeuiRc::UIErrorMalformedUTF8Encoding) ==
+                uint32_t(ResponseCode::UIErrorMalformedUTF8Encoding),
+        "teeui::ResponseCode and "
+        "::android::hardware::confirmationui::V1_0::Responsecude are out of "
+        "sync");
+    return ResponseCode(trc);
+}
+
+teeui::UIOption convertUIOption(UIOption uio) {
+    static_assert(uint32_t(UIOption::AccessibilityInverted) ==
+                          uint32_t(teeui::UIOption::AccessibilityInverted) &&
+                      uint32_t(UIOption::AccessibilityMagnified) ==
+                          uint32_t(teeui::UIOption::AccessibilityMagnified),
+                  "teeui::UIOPtion and ::android::hardware::confirmationui::V1_0::UIOption "
+                  "anre out of sync");
+    return teeui::UIOption(uio);
+}
+
+inline MsgString hidl2MsgString(const hidl_string& s) {
+    return {s.c_str(), s.c_str() + s.size()};
+}
+template <typename T> inline MsgVector<T> hidl2MsgVector(const hidl_vec<T>& v) {
+    return {v};
+}
+
+inline MsgVector<teeui::UIOption> hidl2MsgVector(const hidl_vec<UIOption>& v) {
+    MsgVector<teeui::UIOption> result(v.size());
+    for (unsigned int i = 0; i < v.size(); ++i) {
+        result[i] = convertUIOption(v[i]);
+    }
+    return result;
+}
+
+}  // namespace
+
+TrustyConfirmationUI::TrustyConfirmationUI()
+    : listener_state_(ListenerState::None), prompt_result_(ResponseCode::Ignored) {}
+
+TrustyConfirmationUI::~TrustyConfirmationUI() {
+    ListenerState state = listener_state_;
+    if (state == ListenerState::SetupDone || state == ListenerState::Interactive) {
+        abort();
+    }
+    if (state != ListenerState::None) {
+        callback_thread_.join();
+    }
+}
+
+std::tuple<TeeuiRc, MsgVector<uint8_t>, MsgVector<uint8_t>>
+TrustyConfirmationUI::promptUserConfirmation_(const MsgString& promptText,
+                                              const MsgVector<uint8_t>& extraData,
+                                              const MsgString& locale,
+                                              const MsgVector<teeui::UIOption>& uiOptions) {
+    std::unique_lock<std::mutex> stateLock(listener_state_lock_);
+    /*
+     * This is the main listener thread function. The listener thread life cycle
+     * is equivalent to the life cycle of a single confirmation request. The life
+     * cycle is devided in four phases.
+     *  * The starting phase:
+     *    * The Trusted App gets loaded and/or the connection to it gets established.
+     *    * A connection to the secure input device is established.
+     *    * The prompt is initiated. This sends all information required by the
+     *      confirmation dialog to the TA. The dialog is not yet displayed.
+     *    * An event loop is created.
+     *      * The event loop listens for user input events, fetches them from the
+     *        secure input device, and delivers them to the TA.
+     *    * All evdev devices are grabbed to give confirmationui exclusive access
+     *      to user input.
+     *
+     * Note: During the starting phase the hwbinder service thread is blocked and
+     * waiting for possible Errors. If the setup phase concludes sucessfully, the
+     * hwbinder service thread gets unblocked and returns successfully. Errors
+     * that occur after the first phase are delivered by callback interface.
+     *
+     *  * The 2nd phase - non interactive phase
+     *    * The event loop thread is started.
+     *    * After a grace period:
+     *      * A handshake between the secure input device SecureInput and the TA
+     *        is performed.
+     *      * The input event handler are armed to process user input events.
+     *
+     *  * The 3rd phase - interactive phase
+     *    * We wait to any external event
+     *      * Abort
+     *      * Secure user input asserted
+     *      * Secure input delivered (for non interactive VTS testing)
+     *    * The result is fetched from the TA.
+     *
+     *  * The 4th phase - cleanup
+     *    The cleanup phase is given by the scope of automatic variables created
+     *    in this function. The cleanup commences in reverse order of their creation.
+     *    Here is a list of more complex items in the order in which they go out of
+     *    scope
+     *    * finalizeSecureTouch - signals and joins the secure touch thread.
+     *    * eventloop - signals and joins the event loop thread. The event
+     *      handlers also own all EventDev instances which ungrab the event devices.
+     *      When the eventloop goes out of scope the EventDevs get destroyed
+     *      relinquishing the exclusive hold on the event devices.
+     *    * finalizeConfirmationPrompt - calls abort on the TA, making sure a
+     *      pending operation gets canceled. If the prompt concluded successfully this
+     *      is a spurious call but semantically a no op.
+     *    * secureInput - shuts down the connection to the secure input device
+     *      SecureInput.
+     *    * app - disconnects the TA. Since app is a shared pointer this may not
+     *      unload the app here. It is possible that more instances of the shared
+     *      pointer are held in TrustyConfirmationUI::deliverSecureInputEvent and
+     *      TrustyConfirmationUI::abort. But these instances are extremely short lived
+     *      and it is safe if they are destroyed by either.
+     *    * stateLock - unlocks the listener_state_lock_ if it happens to be held
+     *      at the time of return.
+     */
+
+    std::tuple<TeeuiRc, MsgVector<uint8_t>, MsgVector<uint8_t>> result;
+    TeeuiRc& rc = std::get<TeeuiRc>(result);
+    rc = TeeuiRc::SystemError;
+
+    listener_state_ = ListenerState::Starting;
+
+    auto app = std::make_shared<TrustyApp>(kTrustyDeviceName, kConfirmationuiAppName);
+    if (!app) return result;  // TeeuiRc::SystemError
+
+    app_ = app;
+
+    auto hsBegin = [&]() -> std::tuple<TeeuiRc, Nonce> {
+        auto [error, result] =
+            app->issueCmd<secure_input::InputHandshake, secure_input::InputHandshakeResponse>();
+        auto& [rc, nCo] = result;
+
+        if (error != TrustyAppError::OK || rc != TeeuiRc::OK) {
+            LOG(ERROR) << "Failed to begin secure input handshake (" << int32_t(error) << "/"
+                       << uint32_t(rc) << ")";
+            rc = error != TrustyAppError::OK ? TeeuiRc::SystemError : rc;
+        }
+        return result;
+    };
+
+    auto hsFinalize = [&](const Signature& sig, const Nonce& nCi) -> TeeuiRc {
+        auto [error, finalizeResponse] =
+            app->issueCmd<FinalizeInputSessionHandshake, FinalizeInputSessionHandshakeResponse>(
+                nCi, sig);
+        auto& [rc] = finalizeResponse;
+        if (error != TrustyAppError::OK || rc != TeeuiRc::OK) {
+            LOG(ERROR) << "Failed to finalize secure input handshake (" << int32_t(error) << "/"
+                       << uint32_t(rc) << ")";
+            rc = error != TrustyAppError::OK ? TeeuiRc::SystemError : rc;
+        }
+        return rc;
+    };
+
+    auto deliverInput = [&](DTupKeyEvent event,
+                            const Signature& sig) -> std::tuple<TeeuiRc, InputResponse> {
+        auto [error, result] =
+            app->issueCmd<DeliverInputEvent, DeliverInputEventResponse>(event, sig);
+        auto& [rc, ir] = result;
+        if (error != TrustyAppError::OK) {
+            LOG(ERROR) << "Failed to deliver input command";
+            rc = TeeuiRc::SystemError;
+        }
+        return result;
+    };
+
+    std::atomic<TeeuiRc> eventRC = TeeuiRc::OperationPending;
+    auto inputResult = [&](TeeuiRc rc) {
+        TeeuiRc expected = TeeuiRc::OperationPending;
+        if (eventRC.compare_exchange_strong(expected, rc)) {
+            listener_state_condv_.notify_all();
+        }
+    };
+
+    // create Secure Input device.
+    auto secureInput = createSecureInput(hsBegin, hsFinalize, deliverInput, inputResult);
+    if (!secureInput || !(*secureInput)) {
+        LOG(ERROR) << "Failed to open secure input device";
+        return result;  // TeeuiRc::SystemError;
+    }
+
+    Finalize finalizeConfirmationPrompt([app] {
+        LOG(INFO) << "Calling abort for cleanup";
+        app->issueCmd<AbortMsg>();
+    });
+
+    // initiate prompt
+    LOG(INFO) << "Initiating prompt";
+    TrustyAppError error;
+    auto initResponse = std::tie(rc);
+    std::tie(error, initResponse) =
+        app->issueCmd<PromptUserConfirmationMsg, PromptUserConfirmationResponse>(
+            promptText, extraData, locale, uiOptions);
+    if (error == TrustyAppError::MSG_TOO_LONG) {
+        LOG(ERROR) << "PromptUserConfirmationMsg failed: message too long";
+        rc = TeeuiRc::UIErrorMessageTooLong;
+        return result;
+    } else if (error != TrustyAppError::OK) {
+        LOG(ERROR) << "PromptUserConfirmationMsg failed: " << int32_t(error);
+        return result;  // TeeuiRc::SystemError;
+    }
+    if (rc != TeeuiRc::OK) {
+        LOG(ERROR) << "PromptUserConfirmationMsg failed: " << uint32_t(rc);
+        return result;
+    }
+
+    LOG(INFO) << "Grabbing event devices";
+    EventLoop eventloop;
+    bool grabbed =
+        grabAllEvDevsAndRegisterCallbacks(&eventloop, [&](short flags, const EventDev& evDev) {
+            if (!(flags & POLLIN)) return;
+            secureInput->handleEvent(evDev);
+        });
+
+    if (!grabbed) {
+        rc = TeeuiRc::SystemError;
+        return result;
+    }
+
+    abort_called_ = false;
+    secureInputDelivered_ = false;
+
+    //  ############################## Start 2nd Phase #############################################
+    listener_state_ = ListenerState::SetupDone;
+    stateLock.unlock();
+    listener_state_condv_.notify_all();
+
+    if (!eventloop.start()) {
+        rc = TeeuiRc::SystemError;
+        return result;
+    }
+
+    stateLock.lock();
+
+    LOG(INFO) << "going to sleep for the grace period";
+    auto then = std::chrono::system_clock::now() +
+                std::chrono::milliseconds(kUserPreInputGracePeriodMillis) +
+                std::chrono::microseconds(50);
+    listener_state_condv_.wait_until(stateLock, then, [&]() { return abort_called_; });
+    LOG(INFO) << "waking up";
+
+    if (abort_called_) {
+        LOG(ERROR) << "Abort called";
+        result = {TeeuiRc::Aborted, {}, {}};
+        return result;
+    }
+
+    LOG(INFO) << "Arming event poller";
+    // tell the event poller to act on received input events from now on.
+    secureInput->start();
+
+    //  ############################## Start 3rd Phase - interactive phase #########################
+    LOG(INFO) << "Transition to Interactive";
+    listener_state_ = ListenerState::Interactive;
+    stateLock.unlock();
+    listener_state_condv_.notify_all();
+
+    stateLock.lock();
+    listener_state_condv_.wait(stateLock, [&]() {
+        return eventRC != TeeuiRc::OperationPending || abort_called_ || secureInputDelivered_;
+    });
+    LOG(INFO) << "Listener waking up";
+    if (abort_called_) {
+        LOG(ERROR) << "Abort called";
+        result = {TeeuiRc::Aborted, {}, {}};
+        return result;
+    }
+
+    if (!secureInputDelivered_) {
+        if (eventRC != TeeuiRc::OK) {
+            LOG(ERROR) << "Bad input response";
+            result = {eventRC, {}, {}};
+            return result;
+        }
+    }
+
+    stateLock.unlock();
+
+    LOG(INFO) << "Fetching Result";
+    std::tie(error, result) = app->issueCmd<FetchConfirmationResult, ResultMsg>();
+    LOG(INFO) << "Result yields " << int32_t(error) << "/" << uint32_t(rc);
+    if (error != TrustyAppError::OK) {
+        result = {TeeuiRc::SystemError, {}, {}};
+    }
+    return result;
+
+    //  ############################## Start 4th Phase - cleanup ##################################
+}
+
+// Methods from ::android::hardware::confirmationui::V1_0::IConfirmationUI
+// follow.
+Return<ResponseCode> TrustyConfirmationUI::promptUserConfirmation(
+    const sp<IConfirmationResultCallback>& resultCB, const hidl_string& promptText,
+    const hidl_vec<uint8_t>& extraData, const hidl_string& locale,
+    const hidl_vec<UIOption>& uiOptions) {
+    std::unique_lock<std::mutex> stateLock(listener_state_lock_, std::defer_lock);
+    if (!stateLock.try_lock()) {
+        return ResponseCode::OperationPending;
+    }
+    switch (listener_state_) {
+    case ListenerState::None:
+        break;
+    case ListenerState::Starting:
+    case ListenerState::SetupDone:
+    case ListenerState::Interactive:
+        return ResponseCode::OperationPending;
+    case ListenerState::Terminating:
+        callback_thread_.join();
+        listener_state_ = ListenerState::None;
+        break;
+    default:
+        return ResponseCode::Unexpected;
+    }
+
+    assert(listener_state_ == ListenerState::None);
+
+    callback_thread_ = std::thread(
+        [this](sp<IConfirmationResultCallback> resultCB, hidl_string promptText,
+               hidl_vec<uint8_t> extraData, hidl_string locale, hidl_vec<UIOption> uiOptions) {
+            auto [trc, msg, token] =
+                promptUserConfirmation_(hidl2MsgString(promptText), hidl2MsgVector(extraData),
+                                        hidl2MsgString(locale), hidl2MsgVector(uiOptions));
+            bool do_callback = (listener_state_ == ListenerState::Interactive ||
+                                listener_state_ == ListenerState::SetupDone) &&
+                               resultCB;
+            prompt_result_ = convertRc(trc);
+            listener_state_ = ListenerState::Terminating;
+            if (do_callback) {
+                auto error = resultCB->result(prompt_result_, msg, token);
+                if (!error.isOk()) {
+                    LOG(ERROR) << "Result callback failed " << error.description();
+                }
+            } else {
+                listener_state_condv_.notify_all();
+            }
+        },
+        resultCB, promptText, extraData, locale, uiOptions);
+
+    listener_state_condv_.wait(stateLock, [this] {
+        return listener_state_ == ListenerState::SetupDone ||
+               listener_state_ == ListenerState::Interactive ||
+               listener_state_ == ListenerState::Terminating;
+    });
+    if (listener_state_ == ListenerState::Terminating) {
+        callback_thread_.join();
+        listener_state_ = ListenerState::None;
+        return prompt_result_;
+    }
+    return ResponseCode::OK;
+}
+
+Return<ResponseCode>
+TrustyConfirmationUI::deliverSecureInputEvent(const HardwareAuthToken& secureInputToken) {
+    ResponseCode rc = ResponseCode::Ignored;
+    {
+        /*
+         * deliverSecureInputEvent is only used by the VTS test to mock human input. A correct
+         * implementation responds with a mock confirmation token signed with a test key. The
+         * problem is that the non interactive grace period was not formalized in the HAL spec,
+         * so that the VTS test does not account for the grace period. (It probably should.)
+         * This means we can only pass the VTS test if we block until the grace period is over
+         * (SetupDone -> Interactive) before we deliver the input event.
+         *
+         * The true secure input is delivered by a different mechanism and gets ignored -
+         * not queued - until the grace period is over.
+         *
+         */
+        std::unique_lock<std::mutex> stateLock(listener_state_lock_);
+        listener_state_condv_.wait(stateLock,
+                                   [this] { return listener_state_ != ListenerState::SetupDone; });
+
+        if (listener_state_ != ListenerState::Interactive) return ResponseCode::Ignored;
+        auto sapp = app_.lock();
+        if (!sapp) return ResponseCode::Ignored;
+        auto [error, response] =
+            sapp->issueCmd<DeliverTestCommandMessage, DeliverTestCommandResponse>(
+                static_cast<teeui::TestModeCommands>(secureInputToken.challenge));
+        if (error != TrustyAppError::OK) return ResponseCode::SystemError;
+        auto& [trc] = response;
+        if (trc != TeeuiRc::Ignored) secureInputDelivered_ = true;
+        rc = convertRc(trc);
+    }
+    if (secureInputDelivered_) listener_state_condv_.notify_all();
+    // VTS test expect an OK response if the event was successfully delivered.
+    // But since the TA returns the callback response now, we have to translate
+    // Canceled into OK. Canceled is only returned if the delivered event canceled
+    // the operation, which means that the event was successfully delivered. Thus
+    // we return OK.
+    if (rc == ResponseCode::Canceled) return ResponseCode::OK;
+    return rc;
+}
+
+Return<void> TrustyConfirmationUI::abort() {
+    {
+        std::unique_lock<std::mutex> stateLock(listener_state_lock_);
+        if (listener_state_ == ListenerState::SetupDone ||
+            listener_state_ == ListenerState::Interactive) {
+            auto sapp = app_.lock();
+            if (sapp) sapp->issueCmd<AbortMsg>();
+            abort_called_ = true;
+        }
+    }
+    listener_state_condv_.notify_all();
+    return Void();
+}
+
+android::sp<IConfirmationUI> createTrustyConfirmationUI() {
+    return new TrustyConfirmationUI();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace confirmationui
+}  // namespace hardware
+}  // namespace android
diff --git a/trusty/confirmationui/TrustyConfirmationUI.h b/trusty/confirmationui/TrustyConfirmationUI.h
new file mode 100644
index 0000000..3a7c7ef
--- /dev/null
+++ b/trusty/confirmationui/TrustyConfirmationUI.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CONFIRMATIONUI_V1_0_TRUSTY_CONFIRMATIONUI_H
+#define ANDROID_HARDWARE_CONFIRMATIONUI_V1_0_TRUSTY_CONFIRMATIONUI_H
+
+#include <android/hardware/confirmationui/1.0/IConfirmationUI.h>
+#include <android/hardware/keymaster/4.0/types.h>
+#include <hidl/Status.h>
+
+#include <atomic>
+#include <condition_variable>
+#include <memory>
+#include <mutex>
+#include <teeui/generic_messages.h>
+#include <thread>
+
+#include "TrustyApp.h"
+
+namespace android {
+namespace hardware {
+namespace confirmationui {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+using ::android::trusty::TrustyApp;
+
+class TrustyConfirmationUI : public IConfirmationUI {
+  public:
+    TrustyConfirmationUI();
+    virtual ~TrustyConfirmationUI();
+    // Methods from ::android::hardware::confirmationui::V1_0::IConfirmationUI
+    // follow.
+    Return<ResponseCode> promptUserConfirmation(const sp<IConfirmationResultCallback>& resultCB,
+                                                const hidl_string& promptText,
+                                                const hidl_vec<uint8_t>& extraData,
+                                                const hidl_string& locale,
+                                                const hidl_vec<UIOption>& uiOptions) override;
+    Return<ResponseCode> deliverSecureInputEvent(
+        const ::android::hardware::keymaster::V4_0::HardwareAuthToken& secureInputToken) override;
+    Return<void> abort() override;
+
+  private:
+    std::weak_ptr<TrustyApp> app_;
+    std::thread callback_thread_;
+
+    enum class ListenerState : uint32_t {
+        None,
+        Starting,
+        SetupDone,
+        Interactive,
+        Terminating,
+    };
+
+    /*
+     * listener_state is protected by listener_state_lock. It makes transitions between phases
+     * of the confirmation operation atomic.
+     * (See TrustyConfirmationUI.cpp#promptUserConfirmation_ for details about operation phases)
+     */
+    ListenerState listener_state_;
+    /*
+     * abort_called_ is also protected by listener_state_lock_ and indicates that the HAL user
+     * called abort.
+     */
+    bool abort_called_;
+    std::mutex listener_state_lock_;
+    std::condition_variable listener_state_condv_;
+    ResponseCode prompt_result_;
+    bool secureInputDelivered_;
+
+    std::tuple<teeui::ResponseCode, teeui::MsgVector<uint8_t>, teeui::MsgVector<uint8_t>>
+    promptUserConfirmation_(const teeui::MsgString& promptText,
+                            const teeui::MsgVector<uint8_t>& extraData,
+                            const teeui::MsgString& locale,
+                            const teeui::MsgVector<teeui::UIOption>& uiOptions);
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace confirmationui
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_CONFIRMATIONUI_V1_0_TRUSTY_CONFIRMATIONUI_H
diff --git a/trusty/confirmationui/android.hardware.confirmationui@1.0-service.trusty.rc b/trusty/confirmationui/android.hardware.confirmationui@1.0-service.trusty.rc
new file mode 100644
index 0000000..dc7a03b
--- /dev/null
+++ b/trusty/confirmationui/android.hardware.confirmationui@1.0-service.trusty.rc
@@ -0,0 +1,4 @@
+service confirmationui-1-0 /vendor/bin/hw/android.hardware.confirmationui@1.0-service.trusty
+    class hal
+    user nobody
+    group drmrpc input
diff --git a/trusty/confirmationui/android.hardware.confirmationui@1.0-service.trusty.xml b/trusty/confirmationui/android.hardware.confirmationui@1.0-service.trusty.xml
new file mode 100644
index 0000000..9008b87
--- /dev/null
+++ b/trusty/confirmationui/android.hardware.confirmationui@1.0-service.trusty.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.confirmationui</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+        <name>IConfirmationUI</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/trusty/confirmationui/include/TrustyConfirmationuiHal.h b/trusty/confirmationui/include/TrustyConfirmationuiHal.h
new file mode 100644
index 0000000..2ab9389
--- /dev/null
+++ b/trusty/confirmationui/include/TrustyConfirmationuiHal.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/confirmationui/1.0/IConfirmationUI.h>
+
+namespace android {
+namespace hardware {
+namespace confirmationui {
+namespace V1_0 {
+namespace implementation {
+
+android::sp<IConfirmationUI> createTrustyConfirmationUI();
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace confirmationui
+}  // namespace hardware
+}  // namespace android
diff --git a/trusty/confirmationui/service.cpp b/trusty/confirmationui/service.cpp
new file mode 100644
index 0000000..dd7e84b
--- /dev/null
+++ b/trusty/confirmationui/service.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include <TrustyConfirmationuiHal.h>
+
+using android::sp;
+using android::hardware::confirmationui::V1_0::implementation::createTrustyConfirmationUI;
+
+int main() {
+    ::android::hardware::configureRpcThreadpool(1, true /*willJoinThreadpool*/);
+    auto service = createTrustyConfirmationUI();
+    auto status = service->registerAsService();
+    if (status != android::OK) {
+        LOG(FATAL) << "Could not register service for ConfirmationUI 1.0 (" << status << ")";
+        return -1;
+    }
+    ::android::hardware::joinRpcThreadpool();
+    return -1;
+}
diff --git a/trusty/gatekeeper/Android.bp b/trusty/gatekeeper/Android.bp
index 65b271a..e553af1 100644
--- a/trusty/gatekeeper/Android.bp
+++ b/trusty/gatekeeper/Android.bp
@@ -1,4 +1,3 @@
-//
 // Copyright (C) 2015 The Android Open-Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -20,14 +19,15 @@
 // to only building on ARM if they include assembly. Individual makefiles
 // are responsible for having their own logic, for fine-grained control.
 
-cc_library_shared {
-    name: "gatekeeper.trusty",
+cc_binary {
+    name: "android.hardware.gatekeeper@1.0-service.trusty",
+    defaults: ["hidl_defaults"],
     vendor: true,
-
     relative_install_path: "hw",
+    init_rc: ["android.hardware.gatekeeper@1.0-service.trusty.rc"],
 
     srcs: [
-        "module.cpp",
+        "service.cpp",
         "trusty_gatekeeper_ipc.c",
         "trusty_gatekeeper.cpp",
     ],
@@ -39,10 +39,15 @@
     ],
 
     shared_libs: [
+        "android.hardware.gatekeeper@1.0",
+        "libbase",
+        "libhidlbase",
         "libgatekeeper",
+        "libutils",
         "liblog",
         "libcutils",
         "libtrusty",
     ],
-    header_libs: ["libhardware_headers"],
+
+    vintf_fragments: ["android.hardware.gatekeeper@1.0-service.trusty.xml"],
 }
diff --git a/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.rc b/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.rc
new file mode 100644
index 0000000..5413a6c
--- /dev/null
+++ b/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.rc
@@ -0,0 +1,4 @@
+service vendor.gatekeeper-1-0 /vendor/bin/hw/android.hardware.gatekeeper@1.0-service.trusty
+    class hal
+    user system
+    group system
diff --git a/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.xml b/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.xml
new file mode 100644
index 0000000..19714a8
--- /dev/null
+++ b/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.gatekeeper</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+        <name>IGatekeeper</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/trusty/gatekeeper/module.cpp b/trusty/gatekeeper/module.cpp
deleted file mode 100644
index 0ee3c2f..0000000
--- a/trusty/gatekeeper/module.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <hardware/hardware.h>
-
-#include <string.h>
-#include <errno.h>
-#include <stdlib.h>
-
-#include "trusty_gatekeeper.h"
-
-using gatekeeper::TrustyGateKeeperDevice;
-
-static int trusty_gatekeeper_open(const hw_module_t *module, const char *name,
-        hw_device_t **device) {
-
-    if (strcmp(name, HARDWARE_GATEKEEPER) != 0) {
-        return -EINVAL;
-    }
-
-    TrustyGateKeeperDevice *gatekeeper = new TrustyGateKeeperDevice(module);
-    if (gatekeeper == NULL) return -ENOMEM;
-    *device = gatekeeper->hw_device();
-
-    return 0;
-}
-
-static struct hw_module_methods_t gatekeeper_module_methods = {
-    .open = trusty_gatekeeper_open,
-};
-
-struct gatekeeper_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = {
-    .common = {
-        .tag = HARDWARE_MODULE_TAG,
-        .module_api_version = GATEKEEPER_MODULE_API_VERSION_0_1,
-        .hal_api_version = HARDWARE_HAL_API_VERSION,
-        .id = GATEKEEPER_HARDWARE_MODULE_ID,
-        .name = "Trusty GateKeeper HAL",
-        .author = "The Android Open Source Project",
-        .methods = &gatekeeper_module_methods,
-        .dso = 0,
-        .reserved = {}
-    },
-};
diff --git a/trusty/gatekeeper/service.cpp b/trusty/gatekeeper/service.cpp
new file mode 100644
index 0000000..c5ee488
--- /dev/null
+++ b/trusty/gatekeeper/service.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "android.hardware.gatekeeper@1.0-service.trusty"
+
+#include <android-base/logging.h>
+#include <android/hardware/gatekeeper/1.0/IGatekeeper.h>
+
+#include <hidl/LegacySupport.h>
+
+#include "trusty_gatekeeper.h"
+
+// Generated HIDL files
+using android::hardware::gatekeeper::V1_0::IGatekeeper;
+using gatekeeper::TrustyGateKeeperDevice;
+
+int main() {
+    ::android::hardware::configureRpcThreadpool(1, true /* willJoinThreadpool */);
+    android::sp<TrustyGateKeeperDevice> gatekeeper(new TrustyGateKeeperDevice());
+    auto status = gatekeeper->registerAsService();
+    if (status != android::OK) {
+        LOG(FATAL) << "Could not register service for Gatekeeper 1.0 (trusty) (" << status << ")";
+    }
+
+    android::hardware::joinRpcThreadpool();
+    return -1;  // Should never get here.
+}
diff --git a/trusty/gatekeeper/trusty_gatekeeper.cpp b/trusty/gatekeeper/trusty_gatekeeper.cpp
index b3fbfa9..d149664 100644
--- a/trusty/gatekeeper/trusty_gatekeeper.cpp
+++ b/trusty/gatekeeper/trusty_gatekeeper.cpp
@@ -16,147 +16,131 @@
 
 #define LOG_TAG "TrustyGateKeeper"
 
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-
-#include <type_traits>
-
-#include <log/log.h>
+#include <android-base/logging.h>
+#include <limits>
 
 #include "trusty_gatekeeper.h"
 #include "trusty_gatekeeper_ipc.h"
 #include "gatekeeper_ipc.h"
 
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::gatekeeper::V1_0::GatekeeperStatusCode;
+using ::gatekeeper::EnrollRequest;
+using ::gatekeeper::EnrollResponse;
+using ::gatekeeper::ERROR_INVALID;
+using ::gatekeeper::ERROR_MEMORY_ALLOCATION_FAILED;
+using ::gatekeeper::ERROR_NONE;
+using ::gatekeeper::ERROR_RETRY;
+using ::gatekeeper::SizedBuffer;
+using ::gatekeeper::VerifyRequest;
+using ::gatekeeper::VerifyResponse;
+
 namespace gatekeeper {
 
-const uint32_t SEND_BUF_SIZE = 8192;
-const uint32_t RECV_BUF_SIZE = 8192;
+constexpr const uint32_t SEND_BUF_SIZE = 8192;
+constexpr const uint32_t RECV_BUF_SIZE = 8192;
 
-TrustyGateKeeperDevice::TrustyGateKeeperDevice(const hw_module_t *module) {
-#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
-    static_assert(std::is_standard_layout<TrustyGateKeeperDevice>::value,
-                  "TrustyGateKeeperDevice must be standard layout");
-    static_assert(offsetof(TrustyGateKeeperDevice, device_) == 0,
-                  "device_ must be the first member of TrustyGateKeeperDevice");
-    static_assert(offsetof(TrustyGateKeeperDevice, device_.common) == 0,
-                  "common must be the first member of gatekeeper_device");
-#else
-    assert(reinterpret_cast<gatekeeper_device_t *>(this) == &device_);
-    assert(reinterpret_cast<hw_device_t *>(this) == &(device_.common));
-#endif
-
-    memset(&device_, 0, sizeof(device_));
-    device_.common.tag = HARDWARE_DEVICE_TAG;
-    device_.common.version = 1;
-    device_.common.module = const_cast<hw_module_t *>(module);
-    device_.common.close = close_device;
-
-    device_.enroll = enroll;
-    device_.verify = verify;
-    device_.delete_user = nullptr;
-    device_.delete_all_users = nullptr;
-
+TrustyGateKeeperDevice::TrustyGateKeeperDevice() {
     int rc = trusty_gatekeeper_connect();
     if (rc < 0) {
-        ALOGE("Error initializing trusty session: %d", rc);
+        LOG(ERROR) << "Error initializing trusty session: " << rc;
     }
 
     error_ = rc;
-
-}
-
-hw_device_t* TrustyGateKeeperDevice::hw_device() {
-    return &device_.common;
-}
-
-int TrustyGateKeeperDevice::close_device(hw_device_t* dev) {
-    delete reinterpret_cast<TrustyGateKeeperDevice *>(dev);
-    return 0;
 }
 
 TrustyGateKeeperDevice::~TrustyGateKeeperDevice() {
     trusty_gatekeeper_disconnect();
 }
 
-int TrustyGateKeeperDevice::Enroll(uint32_t uid, const uint8_t *current_password_handle,
-        uint32_t current_password_handle_length, const uint8_t *current_password,
-        uint32_t current_password_length, const uint8_t *desired_password,
-        uint32_t desired_password_length, uint8_t **enrolled_password_handle,
-        uint32_t *enrolled_password_handle_length) {
-
-    if (error_ != 0) {
-        return error_;
-    }
-
-    SizedBuffer desired_password_buffer(desired_password_length);
-    memcpy(desired_password_buffer.buffer.get(), desired_password, desired_password_length);
-
-    SizedBuffer current_password_handle_buffer(current_password_handle_length);
-    if (current_password_handle) {
-        memcpy(current_password_handle_buffer.buffer.get(), current_password_handle,
-                current_password_handle_length);
-    }
-
-    SizedBuffer current_password_buffer(current_password_length);
-    if (current_password) {
-        memcpy(current_password_buffer.buffer.get(), current_password, current_password_length);
-    }
-
-    EnrollRequest request(uid, &current_password_handle_buffer, &desired_password_buffer,
-            &current_password_buffer);
-    EnrollResponse response;
-
-    gatekeeper_error_t error = Send(request, &response);
-
-    if (error == ERROR_RETRY) {
-        return response.retry_timeout;
-    } else if (error != ERROR_NONE) {
-        return -EINVAL;
-    }
-
-    *enrolled_password_handle = response.enrolled_password_handle.buffer.release();
-    *enrolled_password_handle_length = response.enrolled_password_handle.length;
-
-
-    return 0;
+SizedBuffer hidl_vec2sized_buffer(const hidl_vec<uint8_t>& vec) {
+    if (vec.size() == 0 || vec.size() > std::numeric_limits<uint32_t>::max()) return {};
+    auto dummy = new uint8_t[vec.size()];
+    std::copy(vec.begin(), vec.end(), dummy);
+    return {dummy, static_cast<uint32_t>(vec.size())};
 }
 
-int TrustyGateKeeperDevice::Verify(uint32_t uid, uint64_t challenge,
-        const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
-        const uint8_t *provided_password, uint32_t provided_password_length,
-        uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll) {
+Return<void> TrustyGateKeeperDevice::enroll(uint32_t uid,
+                                            const hidl_vec<uint8_t>& currentPasswordHandle,
+                                            const hidl_vec<uint8_t>& currentPassword,
+                                            const hidl_vec<uint8_t>& desiredPassword,
+                                            enroll_cb _hidl_cb) {
     if (error_ != 0) {
-        return error_;
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+        return {};
     }
 
-    SizedBuffer password_handle_buffer(enrolled_password_handle_length);
-    memcpy(password_handle_buffer.buffer.get(), enrolled_password_handle,
-            enrolled_password_handle_length);
-    SizedBuffer provided_password_buffer(provided_password_length);
-    memcpy(provided_password_buffer.buffer.get(), provided_password, provided_password_length);
+    if (desiredPassword.size() == 0) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+        return {};
+    }
 
-    VerifyRequest request(uid, challenge, &password_handle_buffer, &provided_password_buffer);
+    EnrollRequest request(uid, hidl_vec2sized_buffer(currentPasswordHandle),
+                          hidl_vec2sized_buffer(desiredPassword),
+                          hidl_vec2sized_buffer(currentPassword));
+    EnrollResponse response;
+    auto error = Send(request, &response);
+    if (error != ERROR_NONE) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+    } else if (response.error == ERROR_RETRY) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_RETRY_TIMEOUT, response.retry_timeout, {}});
+    } else if (response.error != ERROR_NONE) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+    } else {
+        hidl_vec<uint8_t> new_handle(response.enrolled_password_handle.Data<uint8_t>(),
+                                     response.enrolled_password_handle.Data<uint8_t>() +
+                                             response.enrolled_password_handle.size());
+        _hidl_cb({GatekeeperStatusCode::STATUS_OK, response.retry_timeout, new_handle});
+    }
+    return {};
+}
+
+Return<void> TrustyGateKeeperDevice::verify(
+        uint32_t uid, uint64_t challenge,
+        const ::android::hardware::hidl_vec<uint8_t>& enrolledPasswordHandle,
+        const ::android::hardware::hidl_vec<uint8_t>& providedPassword, verify_cb _hidl_cb) {
+    if (error_ != 0) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+        return {};
+    }
+
+    if (enrolledPasswordHandle.size() == 0) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+        return {};
+    }
+
+    VerifyRequest request(uid, challenge, hidl_vec2sized_buffer(enrolledPasswordHandle),
+                          hidl_vec2sized_buffer(providedPassword));
     VerifyResponse response;
 
-    gatekeeper_error_t error = Send(request, &response);
+    auto error = Send(request, &response);
+    if (error != ERROR_NONE) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+    } else if (response.error == ERROR_RETRY) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_RETRY_TIMEOUT, response.retry_timeout, {}});
+    } else if (response.error != ERROR_NONE) {
+        _hidl_cb({GatekeeperStatusCode::ERROR_GENERAL_FAILURE, 0, {}});
+    } else {
+        hidl_vec<uint8_t> auth_token(
+                response.auth_token.Data<uint8_t>(),
+                response.auth_token.Data<uint8_t>() + response.auth_token.size());
 
-    if (error == ERROR_RETRY) {
-        return response.retry_timeout;
-    } else if (error != ERROR_NONE) {
-        return -EINVAL;
+        _hidl_cb({response.request_reenroll ? GatekeeperStatusCode::STATUS_REENROLL
+                                            : GatekeeperStatusCode::STATUS_OK,
+                  response.retry_timeout, auth_token});
     }
+    return {};
+}
 
-    if (auth_token != NULL && auth_token_length != NULL) {
-       *auth_token = response.auth_token.buffer.release();
-       *auth_token_length = response.auth_token.length;
-    }
+Return<void> TrustyGateKeeperDevice::deleteUser(uint32_t /*uid*/, deleteUser_cb _hidl_cb) {
+    _hidl_cb({GatekeeperStatusCode::ERROR_NOT_IMPLEMENTED, 0, {}});
+    return {};
+}
 
-    if (request_reenroll != NULL) {
-        *request_reenroll = response.request_reenroll;
-    }
-
-    return 0;
+Return<void> TrustyGateKeeperDevice::deleteAllUsers(deleteAllUsers_cb _hidl_cb) {
+    _hidl_cb({GatekeeperStatusCode::ERROR_NOT_IMPLEMENTED, 0, {}});
+    return {};
 }
 
 gatekeeper_error_t TrustyGateKeeperDevice::Send(uint32_t command, const GateKeeperMessage& request,
@@ -172,7 +156,7 @@
     uint32_t response_size = RECV_BUF_SIZE;
     int rc = trusty_gatekeeper_call(command, send_buf, request_size, recv_buf, &response_size);
     if (rc < 0) {
-        ALOGE("error (%d) calling gatekeeper TA", rc);
+        LOG(ERROR) << "error (" << rc << ") calling gatekeeper TA";
         return ERROR_INVALID;
     }
 
@@ -182,51 +166,4 @@
     return response->Deserialize(payload, payload + response_size);
 }
 
-static inline TrustyGateKeeperDevice *convert_device(const gatekeeper_device *dev) {
-    return reinterpret_cast<TrustyGateKeeperDevice *>(const_cast<gatekeeper_device *>(dev));
-}
-
-/* static */
-int TrustyGateKeeperDevice::enroll(const struct gatekeeper_device *dev, uint32_t uid,
-            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
-            const uint8_t *current_password, uint32_t current_password_length,
-            const uint8_t *desired_password, uint32_t desired_password_length,
-            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
-
-    if (dev == NULL ||
-            enrolled_password_handle == NULL || enrolled_password_handle_length == NULL ||
-            desired_password == NULL || desired_password_length == 0)
-        return -EINVAL;
-
-    // Current password and current password handle go together
-    if (current_password_handle == NULL || current_password_handle_length == 0 ||
-            current_password == NULL || current_password_length == 0) {
-        current_password_handle = NULL;
-        current_password_handle_length = 0;
-        current_password = NULL;
-        current_password_length = 0;
-    }
-
-    return convert_device(dev)->Enroll(uid, current_password_handle, current_password_handle_length,
-            current_password, current_password_length, desired_password, desired_password_length,
-            enrolled_password_handle, enrolled_password_handle_length);
-
-}
-
-/* static */
-int TrustyGateKeeperDevice::verify(const struct gatekeeper_device *dev, uint32_t uid,
-        uint64_t challenge, const uint8_t *enrolled_password_handle,
-        uint32_t enrolled_password_handle_length, const uint8_t *provided_password,
-        uint32_t provided_password_length, uint8_t **auth_token, uint32_t *auth_token_length,
-        bool *request_reenroll) {
-
-    if (dev == NULL || enrolled_password_handle == NULL ||
-            provided_password == NULL) {
-        return -EINVAL;
-    }
-
-    return convert_device(dev)->Verify(uid, challenge, enrolled_password_handle,
-            enrolled_password_handle_length, provided_password, provided_password_length,
-            auth_token, auth_token_length, request_reenroll);
-}
 };
diff --git a/trusty/gatekeeper/trusty_gatekeeper.h b/trusty/gatekeeper/trusty_gatekeeper.h
index 2becc49..c0713f4 100644
--- a/trusty/gatekeeper/trusty_gatekeeper.h
+++ b/trusty/gatekeeper/trusty_gatekeeper.h
@@ -17,84 +17,34 @@
 #ifndef TRUSTY_GATEKEEPER_H
 #define TRUSTY_GATEKEEPER_H
 
-#include <hardware/gatekeeper.h>
+#include <android/hardware/gatekeeper/1.0/IGatekeeper.h>
+#include <hidl/Status.h>
+
+#include <memory>
+
 #include <gatekeeper/gatekeeper_messages.h>
 
 #include "gatekeeper_ipc.h"
 
 namespace gatekeeper {
 
-class TrustyGateKeeperDevice {
-    public:
-
-    explicit TrustyGateKeeperDevice(const hw_module_t* module);
+class TrustyGateKeeperDevice : public ::android::hardware::gatekeeper::V1_0::IGatekeeper {
+  public:
+    explicit TrustyGateKeeperDevice();
     ~TrustyGateKeeperDevice();
-
-    hw_device_t* hw_device();
-
     /**
      * Enrolls password_payload, which should be derived from a user selected pin or password,
      * with the authentication factor private key used only for enrolling authentication
      * factor data.
      *
      * Returns: 0 on success or an error code less than 0 on error.
-     * On error, enrolled_password will not be allocated.
-     */
-    int Enroll(uint32_t uid, const uint8_t *current_password_handle,
-            uint32_t current_password_handle_length, const uint8_t *current_password,
-            uint32_t current_password_length, const uint8_t *desired_password,
-            uint32_t desired_password_length, uint8_t **enrolled_password_handle,
-            uint32_t *enrolled_password_handle_length);
-
-    /**
-     * Verifies provided_password matches expected_password after enrolling
-     * with the authentication factor private key.
-     *
-     * Implementations of this module may retain the result of this call
-     * to attest to the recency of authentication.
-     *
-     * On success, writes the address of a verification token to verification_token,
-     *
-     * Returns: 0 on success or an error code less than 0 on error
-     * On error, verification token will not be allocated
-     */
-    int Verify(uint32_t uid, uint64_t challenge, const uint8_t *enrolled_password_handle,
-            uint32_t enrolled_password_handle_length, const uint8_t *provided_password,
-            uint32_t provided_password_length, uint8_t **auth_token, uint32_t *auth_token_length,
-            bool *request_reenroll);
-
-    private:
-
-    gatekeeper_error_t Send(uint32_t command, const GateKeeperMessage& request,
-                           GateKeeperMessage* response);
-
-    gatekeeper_error_t Send(const EnrollRequest& request, EnrollResponse *response) {
-        return Send(GK_ENROLL, request, response);
-    }
-
-    gatekeeper_error_t Send(const VerifyRequest& request, VerifyResponse *response) {
-        return Send(GK_VERIFY, request, response);
-    }
-
-    // Static methods interfacing the HAL API with the TrustyGateKeeper device
-
-    /**
-     * Enrolls desired_password, which should be derived from a user selected pin or password,
-     * with the authentication factor private key used only for enrolling authentication
-     * factor data.
-     *
-     * If there was already a password enrolled, it should be provided in
-     * current_password_handle, along with the current password in current_password
-     * that should validate against current_password_handle.
-     *
-     * Returns: 0 on success or an error code less than 0 on error.
      * On error, enrolled_password_handle will not be allocated.
      */
-    static int enroll(const struct gatekeeper_device *dev, uint32_t uid,
-            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
-            const uint8_t *current_password, uint32_t current_password_length,
-            const uint8_t *desired_password, uint32_t desired_password_length,
-            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length);
+    ::android::hardware::Return<void> enroll(
+            uint32_t uid, const ::android::hardware::hidl_vec<uint8_t>& currentPasswordHandle,
+            const ::android::hardware::hidl_vec<uint8_t>& currentPassword,
+            const ::android::hardware::hidl_vec<uint8_t>& desiredPassword,
+            enroll_cb _hidl_cb) override;
 
     /**
      * Verifies provided_password matches enrolled_password_handle.
@@ -109,18 +59,32 @@
      * Returns: 0 on success or an error code less than 0 on error
      * On error, verification token will not be allocated
      */
-    static int verify(const struct gatekeeper_device *dev, uint32_t uid, uint64_t challenge,
-            const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
-            const uint8_t *provided_password, uint32_t provided_password_length,
-            uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll);
+    ::android::hardware::Return<void> verify(
+            uint32_t uid, uint64_t challenge,
+            const ::android::hardware::hidl_vec<uint8_t>& enrolledPasswordHandle,
+            const ::android::hardware::hidl_vec<uint8_t>& providedPassword,
+            verify_cb _hidl_cb) override;
 
-    static int close_device(hw_device_t* dev);
+    ::android::hardware::Return<void> deleteUser(uint32_t uid, deleteUser_cb _hidl_cb) override;
 
-    gatekeeper_device device_;
+    ::android::hardware::Return<void> deleteAllUsers(deleteAllUsers_cb _hidl_cb) override;
+
+  private:
+    gatekeeper_error_t Send(uint32_t command, const GateKeeperMessage& request,
+                           GateKeeperMessage* response);
+
+    gatekeeper_error_t Send(const EnrollRequest& request, EnrollResponse *response) {
+        return Send(GK_ENROLL, request, response);
+    }
+
+    gatekeeper_error_t Send(const VerifyRequest& request, VerifyResponse *response) {
+        return Send(GK_VERIFY, request, response);
+    }
+
     int error_;
-
 };
-}
+
+}  // namespace gatekeeper
 
 #endif
 
diff --git a/trusty/keymaster/4.0/TrustyKeymaster4Device.cpp b/trusty/keymaster/4.0/TrustyKeymaster4Device.cpp
new file mode 100644
index 0000000..ec2ba12
--- /dev/null
+++ b/trusty/keymaster/4.0/TrustyKeymaster4Device.cpp
@@ -0,0 +1,614 @@
+/*
+ **
+ ** Copyright 2018, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.keymaster@4.0-impl.trusty"
+
+#include <android/hardware/keymaster/3.0/IKeymasterDevice.h>
+#include <authorization_set.h>
+#include <cutils/log.h>
+#include <keymaster/android_keymaster_messages.h>
+#include <trusty_keymaster/TrustyKeymaster4Device.h>
+#include <trusty_keymaster/ipc/trusty_keymaster_ipc.h>
+
+using ::keymaster::AbortOperationRequest;
+using ::keymaster::AbortOperationResponse;
+using ::keymaster::AddEntropyRequest;
+using ::keymaster::AddEntropyResponse;
+using ::keymaster::AttestKeyRequest;
+using ::keymaster::AttestKeyResponse;
+using ::keymaster::AuthorizationSet;
+using ::keymaster::BeginOperationRequest;
+using ::keymaster::BeginOperationResponse;
+using ::keymaster::ExportKeyRequest;
+using ::keymaster::ExportKeyResponse;
+using ::keymaster::FinishOperationRequest;
+using ::keymaster::FinishOperationResponse;
+using ::keymaster::GenerateKeyRequest;
+using ::keymaster::GenerateKeyResponse;
+using ::keymaster::GetKeyCharacteristicsRequest;
+using ::keymaster::GetKeyCharacteristicsResponse;
+using ::keymaster::ImportKeyRequest;
+using ::keymaster::ImportKeyResponse;
+using ::keymaster::UpdateOperationRequest;
+using ::keymaster::UpdateOperationResponse;
+using ::keymaster::ng::Tag;
+
+typedef ::android::hardware::keymaster::V3_0::Tag Tag3;
+using ::android::hardware::keymaster::V4_0::Constants;
+
+namespace keymaster {
+namespace V4_0 {
+namespace {
+
+inline keymaster_tag_t legacy_enum_conversion(const Tag value) {
+    return keymaster_tag_t(value);
+}
+inline Tag legacy_enum_conversion(const keymaster_tag_t value) {
+    return Tag(value);
+}
+inline keymaster_purpose_t legacy_enum_conversion(const KeyPurpose value) {
+    return keymaster_purpose_t(value);
+}
+inline keymaster_key_format_t legacy_enum_conversion(const KeyFormat value) {
+    return keymaster_key_format_t(value);
+}
+
+inline SecurityLevel legacy_enum_conversion(const keymaster_security_level_t value) {
+    return static_cast<SecurityLevel>(value);
+}
+
+inline hw_authenticator_type_t legacy_enum_conversion(const HardwareAuthenticatorType value) {
+    return static_cast<hw_authenticator_type_t>(value);
+}
+
+inline ErrorCode legacy_enum_conversion(const keymaster_error_t value) {
+    return ErrorCode(value);
+}
+
+inline keymaster_tag_type_t typeFromTag(const keymaster_tag_t tag) {
+    return keymaster_tag_get_type(tag);
+}
+
+/*
+ * injectAuthToken translates a KM4 authToken into a legacy AUTH_TOKEN tag
+ *
+ * Currently, system/keymaster's reference implementation only accepts this
+ * method for passing an auth token, so until that changes we need to
+ * translate to the old format.
+ */
+inline hidl_vec<KeyParameter> injectAuthToken(const hidl_vec<KeyParameter>& keyParamsBase,
+                                              const HardwareAuthToken& authToken) {
+    std::vector<KeyParameter> keyParams(keyParamsBase);
+    const size_t mac_len = static_cast<size_t>(Constants::AUTH_TOKEN_MAC_LENGTH);
+    /*
+     * mac.size() == 0 indicates no token provided, so we should not copy.
+     * mac.size() != mac_len means it is incompatible with the old
+     *   hw_auth_token_t structure. This is forbidden by spec, but to be safe
+     *   we only copy if mac.size() == mac_len, e.g. there is an authToken
+     *   with a hw_auth_token_t compatible MAC.
+     */
+    if (authToken.mac.size() == mac_len) {
+        KeyParameter p;
+        p.tag = static_cast<Tag>(Tag3::AUTH_TOKEN);
+        p.blob.resize(sizeof(hw_auth_token_t));
+
+        hw_auth_token_t* auth_token = reinterpret_cast<hw_auth_token_t*>(p.blob.data());
+        auth_token->version = 0;
+        auth_token->challenge = authToken.challenge;
+        auth_token->user_id = authToken.userId;
+        auth_token->authenticator_id = authToken.authenticatorId;
+        auth_token->authenticator_type =
+                htobe32(static_cast<uint32_t>(authToken.authenticatorType));
+        auth_token->timestamp = htobe64(authToken.timestamp);
+        static_assert(mac_len == sizeof(auth_token->hmac));
+        memcpy(auth_token->hmac, authToken.mac.data(), mac_len);
+        keyParams.push_back(p);
+    }
+
+    return hidl_vec<KeyParameter>(std::move(keyParams));
+}
+
+class KmParamSet : public keymaster_key_param_set_t {
+  public:
+    KmParamSet(const hidl_vec<KeyParameter>& keyParams) {
+        params = new keymaster_key_param_t[keyParams.size()];
+        length = keyParams.size();
+        for (size_t i = 0; i < keyParams.size(); ++i) {
+            auto tag = legacy_enum_conversion(keyParams[i].tag);
+            switch (typeFromTag(tag)) {
+                case KM_ENUM:
+                case KM_ENUM_REP:
+                    params[i] = keymaster_param_enum(tag, keyParams[i].f.integer);
+                    break;
+                case KM_UINT:
+                case KM_UINT_REP:
+                    params[i] = keymaster_param_int(tag, keyParams[i].f.integer);
+                    break;
+                case KM_ULONG:
+                case KM_ULONG_REP:
+                    params[i] = keymaster_param_long(tag, keyParams[i].f.longInteger);
+                    break;
+                case KM_DATE:
+                    params[i] = keymaster_param_date(tag, keyParams[i].f.dateTime);
+                    break;
+                case KM_BOOL:
+                    if (keyParams[i].f.boolValue)
+                        params[i] = keymaster_param_bool(tag);
+                    else
+                        params[i].tag = KM_TAG_INVALID;
+                    break;
+                case KM_BIGNUM:
+                case KM_BYTES:
+                    params[i] = keymaster_param_blob(tag, &keyParams[i].blob[0],
+                                                     keyParams[i].blob.size());
+                    break;
+                case KM_INVALID:
+                default:
+                    params[i].tag = KM_TAG_INVALID;
+                    /* just skip */
+                    break;
+            }
+        }
+    }
+    KmParamSet(KmParamSet&& other) noexcept
+        : keymaster_key_param_set_t{other.params, other.length} {
+        other.length = 0;
+        other.params = nullptr;
+    }
+    KmParamSet(const KmParamSet&) = delete;
+    ~KmParamSet() { delete[] params; }
+};
+
+inline hidl_vec<uint8_t> kmBlob2hidlVec(const keymaster_key_blob_t& blob) {
+    hidl_vec<uint8_t> result;
+    result.setToExternal(const_cast<unsigned char*>(blob.key_material), blob.key_material_size);
+    return result;
+}
+
+inline hidl_vec<uint8_t> kmBlob2hidlVec(const keymaster_blob_t& blob) {
+    hidl_vec<uint8_t> result;
+    result.setToExternal(const_cast<unsigned char*>(blob.data), blob.data_length);
+    return result;
+}
+
+inline hidl_vec<uint8_t> kmBuffer2hidlVec(const ::keymaster::Buffer& buf) {
+    hidl_vec<uint8_t> result;
+    result.setToExternal(const_cast<unsigned char*>(buf.peek_read()), buf.available_read());
+    return result;
+}
+
+inline static hidl_vec<hidl_vec<uint8_t>> kmCertChain2Hidl(
+        const keymaster_cert_chain_t& cert_chain) {
+    hidl_vec<hidl_vec<uint8_t>> result;
+    if (!cert_chain.entry_count || !cert_chain.entries) return result;
+
+    result.resize(cert_chain.entry_count);
+    for (size_t i = 0; i < cert_chain.entry_count; ++i) {
+        result[i] = kmBlob2hidlVec(cert_chain.entries[i]);
+    }
+
+    return result;
+}
+
+static inline hidl_vec<KeyParameter> kmParamSet2Hidl(const keymaster_key_param_set_t& set) {
+    hidl_vec<KeyParameter> result;
+    if (set.length == 0 || set.params == nullptr) return result;
+
+    result.resize(set.length);
+    keymaster_key_param_t* params = set.params;
+    for (size_t i = 0; i < set.length; ++i) {
+        auto tag = params[i].tag;
+        result[i].tag = legacy_enum_conversion(tag);
+        switch (typeFromTag(tag)) {
+            case KM_ENUM:
+            case KM_ENUM_REP:
+                result[i].f.integer = params[i].enumerated;
+                break;
+            case KM_UINT:
+            case KM_UINT_REP:
+                result[i].f.integer = params[i].integer;
+                break;
+            case KM_ULONG:
+            case KM_ULONG_REP:
+                result[i].f.longInteger = params[i].long_integer;
+                break;
+            case KM_DATE:
+                result[i].f.dateTime = params[i].date_time;
+                break;
+            case KM_BOOL:
+                result[i].f.boolValue = params[i].boolean;
+                break;
+            case KM_BIGNUM:
+            case KM_BYTES:
+                result[i].blob.setToExternal(const_cast<unsigned char*>(params[i].blob.data),
+                                             params[i].blob.data_length);
+                break;
+            case KM_INVALID:
+            default:
+                params[i].tag = KM_TAG_INVALID;
+                /* just skip */
+                break;
+        }
+    }
+    return result;
+}
+
+void addClientAndAppData(const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
+                         ::keymaster::AuthorizationSet* params) {
+    params->Clear();
+    if (clientId.size()) {
+        params->push_back(::keymaster::TAG_APPLICATION_ID, clientId.data(), clientId.size());
+    }
+    if (appData.size()) {
+        params->push_back(::keymaster::TAG_APPLICATION_DATA, appData.data(), appData.size());
+    }
+}
+
+}  // anonymous namespace
+
+TrustyKeymaster4Device::TrustyKeymaster4Device(TrustyKeymaster* impl) : impl_(impl) {}
+
+TrustyKeymaster4Device::~TrustyKeymaster4Device() {}
+
+Return<void> TrustyKeymaster4Device::getHardwareInfo(getHardwareInfo_cb _hidl_cb) {
+    _hidl_cb(SecurityLevel::TRUSTED_ENVIRONMENT, "TrustyKeymaster", "Google");
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::getHmacSharingParameters(
+        getHmacSharingParameters_cb _hidl_cb) {
+    const GetHmacSharingParametersResponse response = impl_->GetHmacSharingParameters();
+    // response.params is not the same as the HIDL structure, we need to convert it
+    V4_0::HmacSharingParameters params;
+    params.seed.setToExternal(const_cast<uint8_t*>(response.params.seed.data),
+                              response.params.seed.data_length);
+    static_assert(sizeof(response.params.nonce) == params.nonce.size(), "Nonce sizes don't match");
+    memcpy(params.nonce.data(), response.params.nonce, params.nonce.size());
+    _hidl_cb(legacy_enum_conversion(response.error), params);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::computeSharedHmac(
+        const hidl_vec<HmacSharingParameters>& params, computeSharedHmac_cb _hidl_cb) {
+    ComputeSharedHmacRequest request;
+    request.params_array.params_array = new keymaster::HmacSharingParameters[params.size()];
+    request.params_array.num_params = params.size();
+    for (size_t i = 0; i < params.size(); ++i) {
+        request.params_array.params_array[i].seed = {params[i].seed.data(), params[i].seed.size()};
+        static_assert(sizeof(request.params_array.params_array[i].nonce) ==
+                              decltype(params[i].nonce)::size(),
+                      "Nonce sizes don't match");
+        memcpy(request.params_array.params_array[i].nonce, params[i].nonce.data(),
+               params[i].nonce.size());
+    }
+
+    auto response = impl_->ComputeSharedHmac(request);
+    hidl_vec<uint8_t> sharing_check;
+    if (response.error == KM_ERROR_OK) {
+        sharing_check = kmBlob2hidlVec(response.sharing_check);
+    }
+
+    _hidl_cb(legacy_enum_conversion(response.error), sharing_check);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::verifyAuthorization(
+        uint64_t challenge, const hidl_vec<KeyParameter>& parametersToVerify,
+        const HardwareAuthToken& authToken, verifyAuthorization_cb _hidl_cb) {
+    VerifyAuthorizationRequest request;
+    request.challenge = challenge;
+    request.parameters_to_verify.Reinitialize(KmParamSet(parametersToVerify));
+    request.auth_token.challenge = authToken.challenge;
+    request.auth_token.user_id = authToken.userId;
+    request.auth_token.authenticator_id = authToken.authenticatorId;
+    request.auth_token.authenticator_type = legacy_enum_conversion(authToken.authenticatorType);
+    request.auth_token.timestamp = authToken.timestamp;
+    KeymasterBlob mac(authToken.mac.data(), authToken.mac.size());
+    request.auth_token.mac = mac;
+
+    auto response = impl_->VerifyAuthorization(request);
+
+    ::android::hardware::keymaster::V4_0::VerificationToken token;
+    token.challenge = response.token.challenge;
+    token.timestamp = response.token.timestamp;
+    token.parametersVerified = kmParamSet2Hidl(response.token.parameters_verified);
+    token.securityLevel = legacy_enum_conversion(response.token.security_level);
+    token.mac = kmBlob2hidlVec(response.token.mac);
+
+    _hidl_cb(legacy_enum_conversion(response.error), token);
+
+    return Void();
+}
+
+Return<ErrorCode> TrustyKeymaster4Device::addRngEntropy(const hidl_vec<uint8_t>& data) {
+    if (data.size() == 0) return ErrorCode::OK;
+    AddEntropyRequest request;
+    request.random_data.Reinitialize(data.data(), data.size());
+
+    AddEntropyResponse response;
+    impl_->AddRngEntropy(request, &response);
+
+    return legacy_enum_conversion(response.error);
+}
+
+Return<void> TrustyKeymaster4Device::generateKey(const hidl_vec<KeyParameter>& keyParams,
+                                                 generateKey_cb _hidl_cb) {
+    GenerateKeyRequest request;
+    request.key_description.Reinitialize(KmParamSet(keyParams));
+
+    GenerateKeyResponse response;
+    impl_->GenerateKey(request, &response);
+
+    KeyCharacteristics resultCharacteristics;
+    hidl_vec<uint8_t> resultKeyBlob;
+    if (response.error == KM_ERROR_OK) {
+        resultKeyBlob = kmBlob2hidlVec(response.key_blob);
+        resultCharacteristics.hardwareEnforced = kmParamSet2Hidl(response.enforced);
+        resultCharacteristics.softwareEnforced = kmParamSet2Hidl(response.unenforced);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultKeyBlob, resultCharacteristics);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
+                                                           const hidl_vec<uint8_t>& clientId,
+                                                           const hidl_vec<uint8_t>& appData,
+                                                           getKeyCharacteristics_cb _hidl_cb) {
+    GetKeyCharacteristicsRequest request;
+    request.SetKeyMaterial(keyBlob.data(), keyBlob.size());
+    addClientAndAppData(clientId, appData, &request.additional_params);
+
+    GetKeyCharacteristicsResponse response;
+    impl_->GetKeyCharacteristics(request, &response);
+
+    KeyCharacteristics resultCharacteristics;
+    if (response.error == KM_ERROR_OK) {
+        resultCharacteristics.hardwareEnforced = kmParamSet2Hidl(response.enforced);
+        resultCharacteristics.softwareEnforced = kmParamSet2Hidl(response.unenforced);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultCharacteristics);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::importKey(const hidl_vec<KeyParameter>& params,
+                                               KeyFormat keyFormat,
+                                               const hidl_vec<uint8_t>& keyData,
+                                               importKey_cb _hidl_cb) {
+    ImportKeyRequest request;
+    request.key_description.Reinitialize(KmParamSet(params));
+    request.key_format = legacy_enum_conversion(keyFormat);
+    request.SetKeyMaterial(keyData.data(), keyData.size());
+
+    ImportKeyResponse response;
+    impl_->ImportKey(request, &response);
+
+    KeyCharacteristics resultCharacteristics;
+    hidl_vec<uint8_t> resultKeyBlob;
+    if (response.error == KM_ERROR_OK) {
+        resultKeyBlob = kmBlob2hidlVec(response.key_blob);
+        resultCharacteristics.hardwareEnforced = kmParamSet2Hidl(response.enforced);
+        resultCharacteristics.softwareEnforced = kmParamSet2Hidl(response.unenforced);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultKeyBlob, resultCharacteristics);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::importWrappedKey(
+        const hidl_vec<uint8_t>& wrappedKeyData, const hidl_vec<uint8_t>& wrappingKeyBlob,
+        const hidl_vec<uint8_t>& maskingKey, const hidl_vec<KeyParameter>& unwrappingParams,
+        uint64_t passwordSid, uint64_t biometricSid, importWrappedKey_cb _hidl_cb) {
+    ImportWrappedKeyRequest request;
+    request.SetWrappedMaterial(wrappedKeyData.data(), wrappedKeyData.size());
+    request.SetWrappingMaterial(wrappingKeyBlob.data(), wrappingKeyBlob.size());
+    request.SetMaskingKeyMaterial(maskingKey.data(), maskingKey.size());
+    request.additional_params.Reinitialize(KmParamSet(unwrappingParams));
+    request.password_sid = passwordSid;
+    request.biometric_sid = biometricSid;
+
+    ImportWrappedKeyResponse response;
+    impl_->ImportWrappedKey(request, &response);
+
+    KeyCharacteristics resultCharacteristics;
+    hidl_vec<uint8_t> resultKeyBlob;
+    if (response.error == KM_ERROR_OK) {
+        resultKeyBlob = kmBlob2hidlVec(response.key_blob);
+        resultCharacteristics.hardwareEnforced = kmParamSet2Hidl(response.enforced);
+        resultCharacteristics.softwareEnforced = kmParamSet2Hidl(response.unenforced);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultKeyBlob, resultCharacteristics);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::exportKey(KeyFormat exportFormat,
+                                               const hidl_vec<uint8_t>& keyBlob,
+                                               const hidl_vec<uint8_t>& clientId,
+                                               const hidl_vec<uint8_t>& appData,
+                                               exportKey_cb _hidl_cb) {
+    ExportKeyRequest request;
+    request.key_format = legacy_enum_conversion(exportFormat);
+    request.SetKeyMaterial(keyBlob.data(), keyBlob.size());
+    addClientAndAppData(clientId, appData, &request.additional_params);
+
+    ExportKeyResponse response;
+    impl_->ExportKey(request, &response);
+
+    hidl_vec<uint8_t> resultKeyBlob;
+    if (response.error == KM_ERROR_OK) {
+        resultKeyBlob.setToExternal(response.key_data, response.key_data_length);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultKeyBlob);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::attestKey(const hidl_vec<uint8_t>& keyToAttest,
+                                               const hidl_vec<KeyParameter>& attestParams,
+                                               attestKey_cb _hidl_cb) {
+    AttestKeyRequest request;
+    request.SetKeyMaterial(keyToAttest.data(), keyToAttest.size());
+    request.attest_params.Reinitialize(KmParamSet(attestParams));
+
+    AttestKeyResponse response;
+    impl_->AttestKey(request, &response);
+
+    hidl_vec<hidl_vec<uint8_t>> resultCertChain;
+    if (response.error == KM_ERROR_OK) {
+        resultCertChain = kmCertChain2Hidl(response.certificate_chain);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultCertChain);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
+                                                const hidl_vec<KeyParameter>& upgradeParams,
+                                                upgradeKey_cb _hidl_cb) {
+    UpgradeKeyRequest request;
+    request.SetKeyMaterial(keyBlobToUpgrade.data(), keyBlobToUpgrade.size());
+    request.upgrade_params.Reinitialize(KmParamSet(upgradeParams));
+
+    UpgradeKeyResponse response;
+    impl_->UpgradeKey(request, &response);
+
+    if (response.error == KM_ERROR_OK) {
+        _hidl_cb(ErrorCode::OK, kmBlob2hidlVec(response.upgraded_key));
+    } else {
+        _hidl_cb(legacy_enum_conversion(response.error), hidl_vec<uint8_t>());
+    }
+    return Void();
+}
+
+Return<ErrorCode> TrustyKeymaster4Device::deleteKey(const hidl_vec<uint8_t>& keyBlob) {
+    DeleteKeyRequest request;
+    request.SetKeyMaterial(keyBlob.data(), keyBlob.size());
+
+    DeleteKeyResponse response;
+    impl_->DeleteKey(request, &response);
+
+    return legacy_enum_conversion(response.error);
+}
+
+Return<ErrorCode> TrustyKeymaster4Device::deleteAllKeys() {
+    DeleteAllKeysRequest request;
+    DeleteAllKeysResponse response;
+    impl_->DeleteAllKeys(request, &response);
+
+    return legacy_enum_conversion(response.error);
+}
+
+Return<ErrorCode> TrustyKeymaster4Device::destroyAttestationIds() {
+    return ErrorCode::UNIMPLEMENTED;
+}
+
+Return<void> TrustyKeymaster4Device::begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
+                                           const hidl_vec<KeyParameter>& inParams,
+                                           const HardwareAuthToken& authToken, begin_cb _hidl_cb) {
+    hidl_vec<KeyParameter> extendedParams = injectAuthToken(inParams, authToken);
+    BeginOperationRequest request;
+    request.purpose = legacy_enum_conversion(purpose);
+    request.SetKeyMaterial(key.data(), key.size());
+    request.additional_params.Reinitialize(KmParamSet(extendedParams));
+
+    BeginOperationResponse response;
+    impl_->BeginOperation(request, &response);
+
+    hidl_vec<KeyParameter> resultParams;
+    if (response.error == KM_ERROR_OK) {
+        resultParams = kmParamSet2Hidl(response.output_params);
+    }
+
+    _hidl_cb(legacy_enum_conversion(response.error), resultParams, response.op_handle);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::update(uint64_t operationHandle,
+                                            const hidl_vec<KeyParameter>& inParams,
+                                            const hidl_vec<uint8_t>& input,
+                                            const HardwareAuthToken& authToken,
+                                            const VerificationToken& verificationToken,
+                                            update_cb _hidl_cb) {
+    (void)verificationToken;
+    UpdateOperationRequest request;
+    UpdateOperationResponse response;
+    hidl_vec<KeyParameter> resultParams;
+    hidl_vec<uint8_t> resultBlob;
+    hidl_vec<KeyParameter> extendedParams = injectAuthToken(inParams, authToken);
+    uint32_t resultConsumed = 0;
+
+    request.op_handle = operationHandle;
+    request.additional_params.Reinitialize(KmParamSet(extendedParams));
+
+    size_t inp_size = input.size();
+    size_t ser_size = request.SerializedSize();
+
+    if (ser_size > TRUSTY_KEYMASTER_SEND_BUF_SIZE) {
+        response.error = KM_ERROR_INVALID_INPUT_LENGTH;
+    } else {
+        if (ser_size + inp_size > TRUSTY_KEYMASTER_SEND_BUF_SIZE) {
+            inp_size = TRUSTY_KEYMASTER_SEND_BUF_SIZE - ser_size;
+        }
+        request.input.Reinitialize(input.data(), inp_size);
+
+        impl_->UpdateOperation(request, &response);
+
+        if (response.error == KM_ERROR_OK) {
+            resultConsumed = response.input_consumed;
+            resultParams = kmParamSet2Hidl(response.output_params);
+            resultBlob = kmBuffer2hidlVec(response.output);
+        }
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultConsumed, resultParams, resultBlob);
+    return Void();
+}
+
+Return<void> TrustyKeymaster4Device::finish(uint64_t operationHandle,
+                                            const hidl_vec<KeyParameter>& inParams,
+                                            const hidl_vec<uint8_t>& input,
+                                            const hidl_vec<uint8_t>& signature,
+                                            const HardwareAuthToken& authToken,
+                                            const VerificationToken& verificationToken,
+                                            finish_cb _hidl_cb) {
+    (void)verificationToken;
+    FinishOperationRequest request;
+    hidl_vec<KeyParameter> extendedParams = injectAuthToken(inParams, authToken);
+    request.op_handle = operationHandle;
+    request.input.Reinitialize(input.data(), input.size());
+    request.signature.Reinitialize(signature.data(), signature.size());
+    request.additional_params.Reinitialize(KmParamSet(extendedParams));
+
+    FinishOperationResponse response;
+    impl_->FinishOperation(request, &response);
+
+    hidl_vec<KeyParameter> resultParams;
+    hidl_vec<uint8_t> resultBlob;
+    if (response.error == KM_ERROR_OK) {
+        resultParams = kmParamSet2Hidl(response.output_params);
+        resultBlob = kmBuffer2hidlVec(response.output);
+    }
+    _hidl_cb(legacy_enum_conversion(response.error), resultParams, resultBlob);
+    return Void();
+}
+
+Return<ErrorCode> TrustyKeymaster4Device::abort(uint64_t operationHandle) {
+    AbortOperationRequest request;
+    request.op_handle = operationHandle;
+
+    AbortOperationResponse response;
+    impl_->AbortOperation(request, &response);
+
+    return legacy_enum_conversion(response.error);
+}
+}  // namespace V4_0
+}  // namespace keymaster
diff --git a/trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.rc b/trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.rc
new file mode 100644
index 0000000..72c9167
--- /dev/null
+++ b/trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.rc
@@ -0,0 +1,4 @@
+service vendor.keymaster-4-0 /vendor/bin/hw/android.hardware.keymaster@4.0-service.trusty
+    class early_hal
+    user nobody
+    group drmrpc
diff --git a/trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.xml b/trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.xml
new file mode 100644
index 0000000..aa30707
--- /dev/null
+++ b/trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.keymaster</name>
+        <transport>hwbinder</transport>
+        <version>4.0</version>
+        <interface>
+        <name>IKeymasterDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/trusty/keymaster/4.0/service.cpp b/trusty/keymaster/4.0/service.cpp
new file mode 100644
index 0000000..96eb584
--- /dev/null
+++ b/trusty/keymaster/4.0/service.cpp
@@ -0,0 +1,43 @@
+/*
+**
+** Copyright 2018, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <android-base/logging.h>
+#include <android/hardware/keymaster/4.0/IKeymasterDevice.h>
+#include <hidl/HidlTransportSupport.h>
+#include <trusty_keymaster/TrustyKeymaster.h>
+#include <trusty_keymaster/TrustyKeymaster4Device.h>
+
+int main() {
+    ::android::hardware::configureRpcThreadpool(1, true);
+    auto trustyKeymaster = new keymaster::TrustyKeymaster();
+    int err = trustyKeymaster->Initialize();
+    if (err != 0) {
+        LOG(FATAL) << "Could not initialize TrustyKeymaster (" << err << ")";
+        return -1;
+    }
+
+    auto keymaster = new ::keymaster::V4_0::TrustyKeymaster4Device(trustyKeymaster);
+
+    auto status = keymaster->registerAsService();
+    if (status != android::OK) {
+        LOG(FATAL) << "Could not register service for Keymaster 4.0 (" << status << ")";
+        return -1;
+    }
+
+    android::hardware::joinRpcThreadpool();
+    return -1;  // Should never get here.
+}
diff --git a/trusty/keymaster/Android.bp b/trusty/keymaster/Android.bp
index 819851f..f32a69e 100644
--- a/trusty/keymaster/Android.bp
+++ b/trusty/keymaster/Android.bp
@@ -101,10 +101,41 @@
         "libutils",
         "libhardware",
         "libhidlbase",
-        "libhidltransport",
         "libtrusty",
         "libkeymaster_messages",
         "libkeymaster3device",
         "android.hardware.keymaster@3.0"
     ],
 }
+
+cc_binary {
+    name: "android.hardware.keymaster@4.0-service.trusty",
+    defaults: ["hidl_defaults"],
+    relative_install_path: "hw",
+    vendor: true,
+    init_rc: ["4.0/android.hardware.keymaster@4.0-service.trusty.rc"],
+    srcs: [
+        "4.0/service.cpp",
+        "4.0/TrustyKeymaster4Device.cpp",
+        "ipc/trusty_keymaster_ipc.cpp",
+        "TrustyKeymaster.cpp",
+    ],
+
+    local_include_dirs: ["include"],
+
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libdl",
+        "libbase",
+        "libutils",
+        "libhardware",
+        "libhidlbase",
+        "libtrusty",
+        "libkeymaster_messages",
+        "libkeymaster4",
+        "android.hardware.keymaster@4.0"
+    ],
+
+    vintf_fragments: ["4.0/android.hardware.keymaster@4.0-service.trusty.xml"],
+}
diff --git a/trusty/keymaster/TrustyKeymaster.cpp b/trusty/keymaster/TrustyKeymaster.cpp
index 7f5e87f..f3ef747 100644
--- a/trusty/keymaster/TrustyKeymaster.cpp
+++ b/trusty/keymaster/TrustyKeymaster.cpp
@@ -172,24 +172,25 @@
     ForwardCommand(KM_ABORT_OPERATION, request, response);
 }
 
-/* Methods for Keymaster 4.0 functionality -- not yet implemented */
 GetHmacSharingParametersResponse TrustyKeymaster::GetHmacSharingParameters() {
+    // Dummy empty buffer to allow ForwardCommand to have something to serialize
+    Buffer request;
     GetHmacSharingParametersResponse response;
-    response.error = KM_ERROR_UNIMPLEMENTED;
+    ForwardCommand(KM_GET_HMAC_SHARING_PARAMETERS, request, &response);
     return response;
 }
 
 ComputeSharedHmacResponse TrustyKeymaster::ComputeSharedHmac(
-        const ComputeSharedHmacRequest& /* request */) {
+        const ComputeSharedHmacRequest& request) {
     ComputeSharedHmacResponse response;
-    response.error = KM_ERROR_UNIMPLEMENTED;
+    ForwardCommand(KM_COMPUTE_SHARED_HMAC, request, &response);
     return response;
 }
 
 VerifyAuthorizationResponse TrustyKeymaster::VerifyAuthorization(
-        const VerifyAuthorizationRequest& /* request */) {
+        const VerifyAuthorizationRequest& request) {
     VerifyAuthorizationResponse response;
-    response.error = KM_ERROR_UNIMPLEMENTED;
+    ForwardCommand(KM_VERIFY_AUTHORIZATION, request, &response);
     return response;
 }
 
diff --git a/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster4Device.h b/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster4Device.h
new file mode 100644
index 0000000..2be15bc
--- /dev/null
+++ b/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster4Device.h
@@ -0,0 +1,105 @@
+/*
+ **
+ ** Copyright 2017, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#ifndef keymaster_V4_0_TrustyKeymaster4Device_H_
+#define keymaster_V4_0_TrustyKeymaster4Device_H_
+
+#include <android/hardware/keymaster/4.0/IKeymasterDevice.h>
+#include <hidl/Status.h>
+#include <trusty_keymaster/TrustyKeymaster.h>
+
+namespace keymaster {
+
+namespace V4_0 {
+
+using ::android::sp;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::keymaster::V4_0::ErrorCode;
+using ::android::hardware::keymaster::V4_0::HardwareAuthenticatorType;
+using ::android::hardware::keymaster::V4_0::HardwareAuthToken;
+using ::android::hardware::keymaster::V4_0::HmacSharingParameters;
+using ::android::hardware::keymaster::V4_0::IKeymasterDevice;
+using ::android::hardware::keymaster::V4_0::KeyCharacteristics;
+using ::android::hardware::keymaster::V4_0::KeyFormat;
+using ::android::hardware::keymaster::V4_0::KeyParameter;
+using ::android::hardware::keymaster::V4_0::KeyPurpose;
+using ::android::hardware::keymaster::V4_0::SecurityLevel;
+using ::android::hardware::keymaster::V4_0::Tag;
+using ::android::hardware::keymaster::V4_0::VerificationToken;
+
+class TrustyKeymaster4Device : public IKeymasterDevice {
+  public:
+    explicit TrustyKeymaster4Device(TrustyKeymaster* impl);
+    virtual ~TrustyKeymaster4Device();
+
+    Return<void> getHardwareInfo(getHardwareInfo_cb _hidl_cb) override;
+    Return<void> getHmacSharingParameters(getHmacSharingParameters_cb _hidl_cb) override;
+    Return<void> computeSharedHmac(const hidl_vec<HmacSharingParameters>& params,
+                                   computeSharedHmac_cb) override;
+    Return<void> verifyAuthorization(uint64_t challenge,
+                                     const hidl_vec<KeyParameter>& parametersToVerify,
+                                     const HardwareAuthToken& authToken,
+                                     verifyAuthorization_cb _hidl_cb) override;
+    Return<ErrorCode> addRngEntropy(const hidl_vec<uint8_t>& data) override;
+    Return<void> generateKey(const hidl_vec<KeyParameter>& keyParams,
+                             generateKey_cb _hidl_cb) override;
+    Return<void> getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
+                                       const hidl_vec<uint8_t>& clientId,
+                                       const hidl_vec<uint8_t>& appData,
+                                       getKeyCharacteristics_cb _hidl_cb) override;
+    Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
+                           const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override;
+    Return<void> importWrappedKey(const hidl_vec<uint8_t>& wrappedKeyData,
+                                  const hidl_vec<uint8_t>& wrappingKeyBlob,
+                                  const hidl_vec<uint8_t>& maskingKey,
+                                  const hidl_vec<KeyParameter>& unwrappingParams,
+                                  uint64_t passwordSid, uint64_t biometricSid,
+                                  importWrappedKey_cb _hidl_cb) override;
+    Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
+                           const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
+                           exportKey_cb _hidl_cb) override;
+    Return<void> attestKey(const hidl_vec<uint8_t>& keyToAttest,
+                           const hidl_vec<KeyParameter>& attestParams,
+                           attestKey_cb _hidl_cb) override;
+    Return<void> upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
+                            const hidl_vec<KeyParameter>& upgradeParams,
+                            upgradeKey_cb _hidl_cb) override;
+    Return<ErrorCode> deleteKey(const hidl_vec<uint8_t>& keyBlob) override;
+    Return<ErrorCode> deleteAllKeys() override;
+    Return<ErrorCode> destroyAttestationIds() override;
+    Return<void> begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
+                       const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
+                       begin_cb _hidl_cb) override;
+    Return<void> update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                        const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
+                        const VerificationToken& verificationToken, update_cb _hidl_cb) override;
+    Return<void> finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                        const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
+                        const HardwareAuthToken& authToken,
+                        const VerificationToken& verificationToken, finish_cb _hidl_cb) override;
+    Return<ErrorCode> abort(uint64_t operationHandle) override;
+
+  private:
+    std::unique_ptr<::keymaster::TrustyKeymaster> impl_;
+};
+
+}  // namespace V4_0
+}  // namespace keymaster
+
+#endif  // keymaster_V4_0_TrustyKeymaster4Device_H_
diff --git a/trusty/libtrusty/Android.bp b/trusty/libtrusty/Android.bp
index f6e9bee..8dba78d 100644
--- a/trusty/libtrusty/Android.bp
+++ b/trusty/libtrusty/Android.bp
@@ -12,10 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-subdirs = [
-    "tipc-test",
-]
-
 cc_library {
     name: "libtrusty",
     vendor: true,
diff --git a/trusty/storage/proxy/proxy.c b/trusty/storage/proxy/proxy.c
index c61f7d0..e230941 100644
--- a/trusty/storage/proxy/proxy.c
+++ b/trusty/storage/proxy/proxy.c
@@ -46,6 +46,10 @@
         return MMC_RPMB;
     } else if (!strcmp(dev_type_name, "virt")) {
         return VIRT_RPMB;
+    } else if (!strcmp(dev_type_name, "sock")) {
+        return SOCK_RPMB;
+    } else if (!strcmp(dev_type_name, "ufs")) {
+        return UFS_RPMB;
     } else {
         return UNKNOWN_RPMB;
     }
diff --git a/trusty/storage/proxy/rpmb.c b/trusty/storage/proxy/rpmb.c
index 29827e2..7dfd0d0 100644
--- a/trusty/storage/proxy/rpmb.c
+++ b/trusty/storage/proxy/rpmb.c
@@ -16,11 +16,14 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <scsi/sg.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/un.h>
 #include <unistd.h>
 
 #include <linux/major.h>
@@ -49,6 +52,50 @@
 
 #define MMC_BLOCK_SIZE 512
 
+/*
+ * There should be no timeout for security protocol ioctl call, so we choose a
+ * large number for timeout.
+ * 20000 millisecs == 20 seconds
+ */
+#define TIMEOUT 20000
+
+/*
+ * The sg device driver that supports new interface has a major version number of "3".
+ * SG_GET_VERSION_NUM ioctl() will yield a number greater than or 30000.
+ */
+#define RPMB_MIN_SG_VERSION_NUM 30000
+
+/*
+ * CDB format of SECURITY PROTOCOL IN/OUT commands
+ * (JEDEC Standard No. 220D, Page 264)
+ */
+struct sec_proto_cdb {
+    /*
+     * OPERATION CODE = A2h for SECURITY PROTOCOL IN command,
+     * OPERATION CODE = B5h for SECURITY PROTOCOL OUT command.
+     */
+    uint8_t opcode;
+    /* SECURITY PROTOCOL = ECh (JEDEC Universal Flash Storage) */
+    uint8_t sec_proto;
+    /*
+     * The SECURITY PROTOCOL SPECIFIC field specifies the RPMB Protocol ID.
+     * CDB Byte 2 = 00h and CDB Byte 3 = 01h for RPMB Region 0.
+     */
+    uint8_t cdb_byte_2;
+    uint8_t cdb_byte_3;
+    /*
+     * Byte 4 and 5 are reserved.
+     */
+    uint8_t cdb_byte_4;
+    uint8_t cdb_byte_5;
+    /* ALLOCATION/TRANSFER LENGTH in big-endian */
+    uint32_t length;
+    /* Byte 9 is reserved. */
+    uint8_t cdb_byte_10;
+    /* CONTROL = 00h. */
+    uint8_t ctrl;
+} __packed;
+
 static int rpmb_fd = -1;
 static uint8_t read_buf[4096];
 static enum dev_type dev_type = UNKNOWN_RPMB;
@@ -69,6 +116,21 @@
 
 #endif
 
+static void set_sg_io_hdr(sg_io_hdr_t* io_hdrp, int dxfer_direction, unsigned char cmd_len,
+                          unsigned char mx_sb_len, unsigned int dxfer_len, void* dxferp,
+                          unsigned char* cmdp, void* sbp) {
+    memset(io_hdrp, 0, sizeof(sg_io_hdr_t));
+    io_hdrp->interface_id = 'S';
+    io_hdrp->dxfer_direction = dxfer_direction;
+    io_hdrp->cmd_len = cmd_len;
+    io_hdrp->mx_sb_len = mx_sb_len;
+    io_hdrp->dxfer_len = dxfer_len;
+    io_hdrp->dxferp = dxferp;
+    io_hdrp->cmdp = cmdp;
+    io_hdrp->sbp = sbp;
+    io_hdrp->timeout = TIMEOUT;
+}
+
 static int send_mmc_rpmb_req(int mmc_fd, const struct storage_rpmb_send_req* req) {
     struct {
         struct mmc_ioc_multi_cmd multi;
@@ -130,6 +192,57 @@
     return rc;
 }
 
+static int send_ufs_rpmb_req(int sg_fd, const struct storage_rpmb_send_req* req) {
+    int rc;
+    const uint8_t* write_buf = req->payload;
+    /*
+     * Meaning of member values are stated on the definition of struct sec_proto_cdb.
+     */
+    struct sec_proto_cdb in_cdb = {0xA2, 0xEC, 0x00, 0x01, 0x00, 0x00, 0, 0x00, 0x00};
+    struct sec_proto_cdb out_cdb = {0xB5, 0xEC, 0x00, 0x01, 0x00, 0x00, 0, 0x00, 0x00};
+    unsigned char sense_buffer[32];
+
+    if (req->reliable_write_size) {
+        /* Prepare SECURITY PROTOCOL OUT command. */
+        out_cdb.length = __builtin_bswap32(req->reliable_write_size);
+        sg_io_hdr_t io_hdr;
+        set_sg_io_hdr(&io_hdr, SG_DXFER_TO_DEV, sizeof(out_cdb), sizeof(sense_buffer),
+                      req->reliable_write_size, (void*)write_buf, (unsigned char*)&out_cdb,
+                      sense_buffer);
+        rc = ioctl(sg_fd, SG_IO, &io_hdr);
+        if (rc < 0) {
+            ALOGE("%s: ufs ioctl failed: %d, %s\n", __func__, rc, strerror(errno));
+        }
+        write_buf += req->reliable_write_size;
+    }
+
+    if (req->write_size) {
+        /* Prepare SECURITY PROTOCOL OUT command. */
+        out_cdb.length = __builtin_bswap32(req->write_size);
+        sg_io_hdr_t io_hdr;
+        set_sg_io_hdr(&io_hdr, SG_DXFER_TO_DEV, sizeof(out_cdb), sizeof(sense_buffer),
+                      req->write_size, (void*)write_buf, (unsigned char*)&out_cdb, sense_buffer);
+        rc = ioctl(sg_fd, SG_IO, &io_hdr);
+        if (rc < 0) {
+            ALOGE("%s: ufs ioctl failed: %d, %s\n", __func__, rc, strerror(errno));
+        }
+        write_buf += req->write_size;
+    }
+
+    if (req->read_size) {
+        /* Prepare SECURITY PROTOCOL IN command. */
+        out_cdb.length = __builtin_bswap32(req->read_size);
+        sg_io_hdr_t io_hdr;
+        set_sg_io_hdr(&io_hdr, SG_DXFER_FROM_DEV, sizeof(in_cdb), sizeof(sense_buffer),
+                      req->read_size, read_buf, (unsigned char*)&in_cdb, sense_buffer);
+        rc = ioctl(sg_fd, SG_IO, &io_hdr);
+        if (rc < 0) {
+            ALOGE("%s: ufs ioctl failed: %d, %s\n", __func__, rc, strerror(errno));
+        }
+    }
+    return rc;
+}
+
 static int send_virt_rpmb_req(int rpmb_fd, void* read_buf, size_t read_size, const void* payload,
                               size_t payload_size) {
     int rc;
@@ -192,7 +305,14 @@
             msg->result = STORAGE_ERR_GENERIC;
             goto err_response;
         }
-    } else if (dev_type == VIRT_RPMB) {
+    } else if (dev_type == UFS_RPMB) {
+        rc = send_ufs_rpmb_req(rpmb_fd, req);
+        if (rc < 0) {
+            ALOGE("send_ufs_rpmb_req failed: %d, %s\n", rc, strerror(errno));
+            msg->result = STORAGE_ERR_GENERIC;
+            goto err_response;
+        }
+    } else if ((dev_type == VIRT_RPMB) || (dev_type == SOCK_RPMB)) {
         size_t payload_size = req->reliable_write_size + req->write_size;
         rc = send_virt_rpmb_req(rpmb_fd, read_buf, req->read_size, req->payload, payload_size);
         if (rc < 0) {
@@ -231,15 +351,46 @@
 }
 
 int rpmb_open(const char* rpmb_devname, enum dev_type open_dev_type) {
-    int rc;
+    int rc, sg_version_num;
     dev_type = open_dev_type;
 
-    rc = open(rpmb_devname, O_RDWR, 0);
-    if (rc < 0) {
-        ALOGE("unable (%d) to open rpmb device '%s': %s\n", errno, rpmb_devname, strerror(errno));
-        return rc;
+    if (dev_type != SOCK_RPMB) {
+        rc = open(rpmb_devname, O_RDWR, 0);
+        if (rc < 0) {
+            ALOGE("unable (%d) to open rpmb device '%s': %s\n", errno, rpmb_devname, strerror(errno));
+            return rc;
+        }
+        rpmb_fd = rc;
+
+        /* For UFS, it is prudent to check we have a sg device by calling an ioctl */
+        if (dev_type == UFS_RPMB) {
+            if ((ioctl(rpmb_fd, SG_GET_VERSION_NUM, &sg_version_num) < 0) ||
+                (sg_version_num < RPMB_MIN_SG_VERSION_NUM)) {
+                ALOGE("%s is not a sg device, or old sg driver\n", rpmb_devname);
+                return -1;
+            }
+        }
+    } else {
+        struct sockaddr_un unaddr;
+        struct sockaddr *addr = (struct sockaddr *)&unaddr;
+        rc = socket(AF_UNIX, SOCK_STREAM, 0);
+        if (rc < 0) {
+            ALOGE("unable (%d) to create socket: %s\n", errno, strerror(errno));
+            return rc;
+        }
+        rpmb_fd = rc;
+
+        memset(&unaddr, 0, sizeof(unaddr));
+        unaddr.sun_family = AF_UNIX;
+        // TODO if it overflowed, bail rather than connecting?
+        strncpy(unaddr.sun_path, rpmb_devname, sizeof(unaddr.sun_path)-1);
+        rc = connect(rpmb_fd, addr, sizeof(unaddr));
+        if (rc < 0) {
+            ALOGE("unable (%d) to connect to rpmb socket '%s': %s\n", errno, rpmb_devname, strerror(errno));
+            return rc;
+        }
     }
-    rpmb_fd = rc;
+
     return 0;
 }
 
diff --git a/trusty/storage/proxy/rpmb.h b/trusty/storage/proxy/rpmb.h
index 4c330c9..f4e1b51 100644
--- a/trusty/storage/proxy/rpmb.h
+++ b/trusty/storage/proxy/rpmb.h
@@ -18,7 +18,7 @@
 #include <stdint.h>
 #include <trusty/interface/storage.h>
 
-enum dev_type { UNKNOWN_RPMB, MMC_RPMB, VIRT_RPMB };
+enum dev_type { UNKNOWN_RPMB, MMC_RPMB, VIRT_RPMB, UFS_RPMB, SOCK_RPMB };
 
 int rpmb_open(const char* rpmb_devname, enum dev_type dev_type);
 int rpmb_send(struct storage_msg* msg, const void* r, size_t req_len);
diff --git a/trusty/trusty-base.mk b/trusty/trusty-base.mk
index 0a0ecec..fd8daa8 100644
--- a/trusty/trusty-base.mk
+++ b/trusty/trusty-base.mk
@@ -19,9 +19,12 @@
 # to pull in the baseline set of Trusty specific modules.
 #
 
+# For gatekeeper, we include the generic -service and -impl to use legacy
+# HAL loading of gatekeeper.trusty.
+
 PRODUCT_PACKAGES += \
-	android.hardware.keymaster@3.0-service.trusty \
-	gatekeeper.trusty
+	android.hardware.keymaster@4.0-service.trusty \
+	android.hardware.gatekeeper@1.0-service.trusty
 
 PRODUCT_PROPERTY_OVERRIDES += \
 	ro.hardware.keystore=trusty \
diff --git a/trusty/utils/rpmb_dev/Android.bp b/trusty/utils/rpmb_dev/Android.bp
new file mode 100644
index 0000000..e923e82
--- /dev/null
+++ b/trusty/utils/rpmb_dev/Android.bp
@@ -0,0 +1,33 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at //
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_binary {
+    name: "rpmb_dev",
+    vendor: true,
+
+    srcs: [
+        "rpmb_dev.c",
+    ],
+    shared_libs: [
+        "libc",
+        "liblog",
+        "libcrypto",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    init_rc: [
+        "rpmb_dev.rc",
+    ],
+}
diff --git a/trusty/utils/rpmb_dev/rpmb.h b/trusty/utils/rpmb_dev/rpmb.h
new file mode 100644
index 0000000..ab7e8d8
--- /dev/null
+++ b/trusty/utils/rpmb_dev/rpmb.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __RPMB_H__
+#define __RPMB_H__
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+struct rpmb_key {
+    uint8_t byte[32];
+};
+
+struct rpmb_state;
+
+#define RPMB_BUF_SIZE 256
+
+/* provides */
+int rpmb_init(struct rpmb_state** statep,
+              void* mmc_handle,
+              const struct rpmb_key* key);
+void rpmb_uninit(struct rpmb_state* statep);
+int rpmb_read(struct rpmb_state* state,
+              void* buf,
+              uint16_t addr,
+              uint16_t count);
+/* count must be 1 or 2, addr must be aligned */
+int rpmb_write(struct rpmb_state* state,
+               const void* buf,
+               uint16_t addr,
+               uint16_t count,
+               bool sync);
+
+/* needs */
+int rpmb_send(void* mmc_handle,
+              void* reliable_write_buf,
+              size_t reliable_write_size,
+              void* write_buf,
+              size_t write_buf_size,
+              void* read_buf,
+              size_t read_buf_size,
+              bool sync);
+
+#endif
diff --git a/trusty/utils/rpmb_dev/rpmb_dev.c b/trusty/utils/rpmb_dev/rpmb_dev.c
new file mode 100644
index 0000000..af97eba
--- /dev/null
+++ b/trusty/utils/rpmb_dev/rpmb_dev.c
@@ -0,0 +1,657 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#define LOG_TAG "rpmb_mock"
+
+#include "rpmb_protocol.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <log/log.h>
+#include <openssl/hmac.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+/* verbose is an int for getopt */
+static int verbose = false;
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+
+HMAC_CTX* HMAC_CTX_new(void) {
+    HMAC_CTX* ctx = malloc(sizeof(*ctx));
+    if (ctx != NULL) {
+        HMAC_CTX_init(ctx);
+    }
+    return ctx;
+}
+
+void HMAC_CTX_free(HMAC_CTX* ctx) {
+    if (ctx != NULL) {
+        HMAC_CTX_cleanup(ctx);
+        free(ctx);
+    }
+}
+
+#endif
+
+#define MAX_WRITE_COUNTER (0xffffffff)
+
+struct rpmb_data_header {
+    uint32_t write_counter;
+    uint16_t max_block;
+    uint8_t pad1;
+    uint8_t key_programmed;
+    struct rpmb_key key;
+    uint8_t pad[512 - 4 - 2 - 1 - 1 - sizeof(struct rpmb_key)];
+};
+
+#define MAX_PACKET_COUNT (8)
+
+struct rpmb_dev_state {
+    struct rpmb_data_header header;
+    struct rpmb_packet cmd[MAX_PACKET_COUNT];
+    struct rpmb_packet res[MAX_PACKET_COUNT];
+    uint16_t cmd_count;
+    uint16_t res_count;
+    int data_fd;
+};
+
+/* TODO: move to common location */
+static int rpmb_mac(struct rpmb_key key, struct rpmb_packet* packet, size_t packet_count,
+                    struct rpmb_key* mac) {
+    size_t i;
+    int hmac_ret;
+    unsigned int md_len;
+    HMAC_CTX* hmac_ctx;
+
+    hmac_ctx = HMAC_CTX_new();
+    hmac_ret = HMAC_Init_ex(hmac_ctx, &key, sizeof(key), EVP_sha256(), NULL);
+    if (!hmac_ret) {
+        ALOGE("HMAC_Init_ex failed\n");
+        goto err;
+    }
+    for (i = 0; i < packet_count; i++) {
+        hmac_ret = HMAC_Update(hmac_ctx, packet[i].data, 284);
+        if (!hmac_ret) {
+            ALOGE("HMAC_Update failed\n");
+            goto err;
+        }
+    }
+    hmac_ret = HMAC_Final(hmac_ctx, mac->byte, &md_len);
+    if (md_len != sizeof(mac->byte)) {
+        ALOGE("bad md_len %d != %zd\n", md_len, sizeof(mac->byte));
+        exit(1);
+    }
+    if (!hmac_ret) {
+        ALOGE("HMAC_Final failed\n");
+        goto err;
+    }
+
+err:
+    HMAC_CTX_free(hmac_ctx);
+    return hmac_ret ? 0 : -1;
+}
+
+static int rpmb_file_seek(struct rpmb_dev_state* s, uint16_t addr) {
+    int ret;
+    int pos = addr * RPMB_PACKET_DATA_SIZE + sizeof(s->header);
+    ret = lseek(s->data_fd, pos, SEEK_SET);
+    if (ret != pos) {
+        ALOGE("rpmb_dev: seek to %d failed, got %d\n", pos, ret);
+        return -1;
+    }
+    return 0;
+}
+
+static uint16_t rpmb_dev_program_key(struct rpmb_dev_state* s) {
+    int ret;
+
+    if (s->header.key_programmed) {
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    s->header.key = s->cmd[0].key_mac;
+    s->header.key_programmed = 1;
+
+    ret = lseek(s->data_fd, 0, SEEK_SET);
+    if (ret) {
+        ALOGE("rpmb_dev: Failed to seek rpmb data file\n");
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    ret = write(s->data_fd, &s->header, sizeof(s->header));
+    if (ret != sizeof(s->header)) {
+        ALOGE("rpmb_dev: Failed to write rpmb key: %d, %s\n", ret, strerror(errno));
+
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    return RPMB_RES_OK;
+}
+
+static uint16_t rpmb_dev_get_counter(struct rpmb_dev_state* s) {
+    s->res[0].write_counter = rpmb_u32(s->header.write_counter);
+
+    return RPMB_RES_OK;
+}
+
+static uint16_t rpmb_dev_data_write(struct rpmb_dev_state* s) {
+    uint16_t addr = rpmb_get_u16(s->cmd[0].address);
+    uint16_t block_count = s->cmd_count;
+    uint32_t write_counter;
+    int ret;
+
+    if (s->header.write_counter == MAX_WRITE_COUNTER) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Write counter expired\n");
+        }
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    write_counter = rpmb_get_u32(s->cmd[0].write_counter);
+    if (s->header.write_counter != write_counter) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Invalid write counter %u. Expected: %u\n", write_counter,
+                  s->header.write_counter);
+        }
+        return RPMB_RES_COUNT_FAILURE;
+    }
+
+    ret = rpmb_file_seek(s, addr);
+    if (ret) {
+        ALOGE("rpmb_dev: Failed to seek rpmb data file\n");
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    for (int i = 0; i < block_count; i++) {
+        ret = write(s->data_fd, s->cmd[i].data, RPMB_PACKET_DATA_SIZE);
+        if (ret != RPMB_PACKET_DATA_SIZE) {
+            ALOGE("rpmb_dev: Failed to write rpmb data file: %d, %s\n", ret, strerror(errno));
+            return RPMB_RES_WRITE_FAILURE;
+        }
+    }
+
+    s->header.write_counter++;
+
+    ret = lseek(s->data_fd, 0, SEEK_SET);
+    if (ret) {
+        ALOGE("rpmb_dev: Failed to seek rpmb data file\n");
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    ret = write(s->data_fd, &s->header.write_counter, sizeof(s->header.write_counter));
+    if (ret != sizeof(s->header.write_counter)) {
+        ALOGE("rpmb_dev: Failed to write rpmb write counter: %d, %s\n", ret, strerror(errno));
+
+        return RPMB_RES_WRITE_FAILURE;
+    }
+
+    s->res[0].write_counter = rpmb_u32(s->header.write_counter);
+    return RPMB_RES_OK;
+}
+
+static uint16_t rpmb_dev_data_read(struct rpmb_dev_state* s) {
+    uint16_t addr;
+    uint16_t block_count;
+    int ret;
+
+    addr = rpmb_get_u16(s->cmd[0].address);
+    block_count = s->res_count;
+
+    rpmb_file_seek(s, addr);
+
+    for (int i = 0; i < block_count; i++) {
+        ret = read(s->data_fd, s->res[i].data, RPMB_PACKET_DATA_SIZE);
+        if (ret != 0 && ret != RPMB_PACKET_DATA_SIZE) {
+            ALOGE("rpmb_dev: Failed to read rpmb data file: %d, %s\n", ret, strerror(errno));
+            return RPMB_RES_READ_FAILURE;
+        }
+    }
+
+    return RPMB_RES_OK;
+}
+
+struct rpmb_dev_cmd {
+    uint16_t (*func)(struct rpmb_dev_state* s);
+    uint16_t resp;
+    bool key_mac_is_key;
+    bool check_mac;
+    bool check_result_read;
+    bool check_key_programmed;
+    bool check_addr;
+    bool multi_packet_cmd;
+    bool multi_packet_res;
+    bool res_mac;
+};
+
+static struct rpmb_dev_cmd rpmb_dev_cmd_table[] = {
+        [RPMB_REQ_PROGRAM_KEY] =
+                {
+                        .func = rpmb_dev_program_key,
+                        .resp = RPMB_RESP_PROGRAM_KEY,
+                        .key_mac_is_key = true,
+                        .check_result_read = true,
+                },
+        [RPMB_REQ_GET_COUNTER] =
+                {
+                        .func = rpmb_dev_get_counter,
+                        .resp = RPMB_RESP_GET_COUNTER,
+                        .check_key_programmed = true,
+                        .res_mac = true,
+                },
+        [RPMB_REQ_DATA_WRITE] =
+                {
+                        .func = rpmb_dev_data_write,
+                        .resp = RPMB_RESP_DATA_WRITE,
+                        .check_mac = true,
+                        .check_result_read = true,
+                        .check_key_programmed = true,
+                        .check_addr = true,
+                        .multi_packet_cmd = true,
+                        .res_mac = true,
+                },
+        [RPMB_REQ_DATA_READ] =
+                {
+                        .func = rpmb_dev_data_read,
+                        .resp = RPMB_RESP_DATA_READ,
+                        .check_addr = true,
+                        .multi_packet_res = true,
+                        .res_mac = true,
+                },
+};
+
+#define countof(arr) (sizeof(arr) / sizeof(arr[0]))
+
+static void rpmb_dev_process_cmd(struct rpmb_dev_state* s) {
+    assert(s->cmd_count > 0);
+    assert(s->res_count > 0);
+    uint16_t req_resp = rpmb_get_u16(s->cmd[0].req_resp);
+    uint16_t addr = rpmb_get_u16(s->cmd[0].address);
+    uint16_t sub_req;
+    uint16_t cmd_index = req_resp < countof(rpmb_dev_cmd_table) ? req_resp : 0;
+    struct rpmb_dev_cmd* cmd = &rpmb_dev_cmd_table[cmd_index];
+    uint16_t result = RPMB_RES_GENERAL_FAILURE;
+    struct rpmb_key mac;
+    uint16_t block_count = 0;
+
+    if (cmd->check_result_read) {
+        sub_req = rpmb_get_u16(s->cmd[s->cmd_count - 1].req_resp);
+        if (sub_req != RPMB_REQ_RESULT_READ) {
+            if (verbose) {
+                ALOGE("rpmb_dev: Request %d, missing result read request, got %d, cmd_count %d\n",
+                      req_resp, sub_req, s->cmd_count);
+            }
+            goto err;
+        }
+        assert(s->cmd_count > 1);
+        s->cmd_count--;
+    }
+
+    if (cmd->check_mac) {
+        if (rpmb_mac(s->header.key, s->cmd, s->cmd_count, &mac) != 0) {
+            ALOGE("rpmb_dev: failed to caclulate mac\n");
+            goto err;
+        }
+    } else if (cmd->key_mac_is_key) {
+        mac = s->cmd[s->cmd_count - 1].key_mac;
+    } else {
+        memset(mac.byte, 0, sizeof(mac.byte));
+    }
+
+    if (memcmp(&mac, s->cmd[s->cmd_count - 1].key_mac.byte, sizeof(mac))) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Request %d, invalid MAC, cmd_count %d\n", req_resp, s->cmd_count);
+        }
+        if (cmd->check_mac) {
+            result = RPMB_RES_AUTH_FAILURE;
+        }
+        goto err;
+    }
+
+    if (cmd->multi_packet_cmd) {
+        block_count = s->cmd_count;
+    }
+    if (cmd->multi_packet_res) {
+        block_count = s->res_count;
+    }
+
+    if (cmd->check_addr && (addr + block_count > s->header.max_block + 1)) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Request %d, invalid addr: 0x%x count 0x%x, Out of bounds. Max addr "
+                  "0x%x\n",
+                  req_resp, addr, block_count, s->header.max_block + 1);
+        }
+        result = RPMB_RES_ADDR_FAILURE;
+        goto err;
+    }
+    if (!cmd->check_addr && addr) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Request %d, invalid addr: 0x%x != 0\n", req_resp, addr);
+        }
+        goto err;
+    }
+
+    for (int i = 1; i < s->cmd_count; i++) {
+        sub_req = rpmb_get_u16(s->cmd[i].req_resp);
+        if (sub_req != req_resp) {
+            if (verbose) {
+                ALOGE("rpmb_dev: Request %d, sub-request mismatch, %d, at %d\n", req_resp, i,
+                      sub_req);
+            }
+            goto err;
+        }
+    }
+    if (!cmd->multi_packet_cmd && s->cmd_count != 1) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Request %d, bad cmd count %d, expected 1\n", req_resp, s->cmd_count);
+        }
+        goto err;
+    }
+    if (!cmd->multi_packet_res && s->res_count != 1) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Request %d, bad res count %d, expected 1\n", req_resp, s->res_count);
+        }
+        goto err;
+    }
+
+    if (cmd->check_key_programmed && !s->header.key_programmed) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Request %d, key is not programmed\n", req_resp);
+        }
+        s->res[0].result = rpmb_u16(RPMB_RES_NO_AUTH_KEY);
+        return;
+    }
+
+    if (!cmd->func) {
+        if (verbose) {
+            ALOGE("rpmb_dev: Unsupported request: %d\n", req_resp);
+        }
+        goto err;
+    }
+
+    result = cmd->func(s);
+
+err:
+    if (s->header.write_counter == MAX_WRITE_COUNTER) {
+        result |= RPMB_RES_WRITE_COUNTER_EXPIRED;
+    }
+
+    for (int i = 0; i < s->res_count; i++) {
+        s->res[i].nonce = s->cmd[0].nonce;
+        s->res[i].address = rpmb_u16(addr);
+        s->res[i].block_count = rpmb_u16(block_count);
+        s->res[i].result = rpmb_u16(result);
+        s->res[i].req_resp = rpmb_u16(cmd->resp);
+    }
+    if (cmd->res_mac) {
+        rpmb_mac(s->header.key, s->res, s->res_count, &s->res[s->res_count - 1].key_mac);
+    }
+}
+
+/*
+ * Receives data until one of the following is true:
+ * - The buffer is full (return will be len)
+ * - The connection closed (return > 0, < len)
+ * - An error occurred (return will be the negative error code from recv)
+ */
+ssize_t recv_until(int sock, void* dest_in, size_t len) {
+    size_t bytes_recvd = 0;
+    char* dest = dest_in;
+    while (bytes_recvd < len) {
+        ssize_t ret = recv(sock, dest, len - bytes_recvd, 0);
+        if (ret < 0) {
+            return ret;
+        }
+        dest += ret;
+        bytes_recvd += ret;
+        if (ret == 0) {
+            break;
+        }
+    }
+    return bytes_recvd;
+}
+
+/*
+ * Handles an incoming connection to the rpmb daemon.
+ * Returns 0 if the client disconnects without violating the protocol.
+ * Returns a negative value if we terminated the connection abnormally.
+ *
+ * Arguments:
+ *   conn_sock - an fd to send/recv on
+ *   s - an initialized rpmb device
+ */
+int handle_conn(struct rpmb_dev_state* s, int conn_sock) {
+    int ret;
+
+    while (true) {
+        memset(s->res, 0, sizeof(s->res));
+        ret = recv_until(conn_sock, &s->res_count, sizeof(s->res_count));
+
+        /*
+         * Disconnected while not in the middle of anything.
+         */
+        if (ret <= 0) {
+            return 0;
+        }
+
+        if (s->res_count > MAX_PACKET_COUNT) {
+            ALOGE("rpmb_dev: Receive count too large: %d\n", s->res_count);
+            return -1;
+        }
+        if (s->res_count <= 0) {
+            ALOGE("rpmb_dev: Receive count too small: %d\n", s->res_count);
+            return -1;
+        }
+
+        ret = recv_until(conn_sock, &s->cmd_count, sizeof(s->cmd_count));
+        if (ret != sizeof(s->cmd_count)) {
+            ALOGE("rpmb_dev: Failed to read cmd_count");
+            return -1;
+        }
+
+        if (s->cmd_count == 0) {
+            ALOGE("rpmb_dev: Must contain at least one command\n");
+            return -1;
+        }
+
+        if (s->cmd_count > MAX_PACKET_COUNT) {
+            ALOGE("rpmb_dev: Command count is too large\n");
+            return -1;
+        }
+
+        size_t cmd_size = s->cmd_count * sizeof(s->cmd[0]);
+        ret = recv_until(conn_sock, s->cmd, cmd_size);
+        if (ret != (int)cmd_size) {
+            ALOGE("rpmb_dev: Failed to read command: "
+                  "cmd_size: %zu ret: %d, %s\n",
+                  cmd_size, ret, strerror(errno));
+            return -1;
+        }
+
+        rpmb_dev_process_cmd(s);
+
+        size_t resp_size = sizeof(s->res[0]) * s->res_count;
+        ret = send(conn_sock, s->res, resp_size, 0);
+        if (ret != (int)resp_size) {
+            ALOGE("rpmb_dev: Failed to send response: %d, %s\n", ret, strerror(errno));
+            return -1;
+        }
+    }
+}
+
+void usage(const char* argv0) {
+    fprintf(stderr, "Usage: %s [-d|--dev] <datafile> [--sock] <socket_path>\n", argv0);
+    fprintf(stderr, "or:    %s [-d|--dev] <datafile> [--size <size>] [--key key]\n", argv0);
+}
+
+int main(int argc, char** argv) {
+    struct rpmb_dev_state s;
+    int ret;
+    int cmdres_sock;
+    struct sockaddr_un cmdres_sockaddr;
+    const char* data_file_name = NULL;
+    const char* socket_path = NULL;
+    int open_flags;
+    int init = false;
+
+    struct option long_options[] = {{"size", required_argument, 0, 0},
+                                    {"key", required_argument, 0, 0},
+                                    {"sock", required_argument, 0, 0},
+                                    {"dev", required_argument, 0, 'd'},
+                                    {"init", no_argument, &init, true},
+                                    {"verbose", no_argument, &verbose, true},
+                                    {0, 0, 0, 0}};
+
+    memset(&s.header, 0, sizeof(s.header));
+
+    while (1) {
+        int c;
+        int option_index = 0;
+        c = getopt_long(argc, argv, "d:", long_options, &option_index);
+        if (c == -1) {
+            break;
+        }
+
+        switch (c) {
+            /* long args */
+            case 0:
+                switch (option_index) {
+                    /* size */
+                    case 0:
+                        s.header.max_block = atoi(optarg) - 1;
+                        break;
+                    /* key */
+                    case 1:
+                        for (size_t i = 0; i < sizeof(s.header.key.byte); i++) {
+                            if (!optarg) {
+                                break;
+                            }
+                            s.header.key.byte[i] = strtol(optarg, &optarg, 16);
+                            s.header.key_programmed = 1;
+                        }
+                        break;
+                    /* sock */
+                    case 2:
+                        socket_path = optarg;
+                        break;
+                }
+                break;
+            /* dev */
+            case 'd':
+                data_file_name = optarg;
+                break;
+            default:
+                usage(argv[0]);
+                return EXIT_FAILURE;
+        }
+    }
+
+    /*
+     * We always need a data file, and at exactly one of --init or --sock
+     * must be specified.
+     */
+    if (!data_file_name || (!init == !socket_path)) {
+        usage(argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    /*
+     * If the file is already initialized, exit early.
+     */
+    if (init && !access(data_file_name, F_OK)) {
+        return EXIT_SUCCESS;
+    }
+
+    open_flags = O_RDWR;
+    if (init) {
+        open_flags |= O_CREAT | O_TRUNC;
+    }
+    s.data_fd = open(data_file_name, open_flags, S_IWUSR | S_IRUSR);
+    if (s.data_fd < 0) {
+        ALOGE("rpmb_dev: Failed to open rpmb data file, %s: %s\n", data_file_name, strerror(errno));
+        return EXIT_FAILURE;
+    }
+
+    if (init) {
+        /* Create new rpmb data file */
+        if (s.header.max_block == 0) {
+            s.header.max_block = 512 - 1;
+        }
+        ret = write(s.data_fd, &s.header, sizeof(s.header));
+        if (ret != sizeof(s.header)) {
+            ALOGE("rpmb_dev: Failed to write rpmb data file: %d, %s\n", ret, strerror(errno));
+            return EXIT_FAILURE;
+        }
+        return EXIT_SUCCESS;
+    }
+
+    ret = read(s.data_fd, &s.header, sizeof(s.header));
+    if (ret != sizeof(s.header)) {
+        ALOGE("rpmb_dev: Failed to read rpmb data file: %d, %s\n", ret, strerror(errno));
+        return EXIT_FAILURE;
+    }
+
+    cmdres_sock = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (cmdres_sock < 0) {
+        ALOGE("rpmb_dev: Failed to create command/response socket: %s\n", strerror(errno));
+        return EXIT_FAILURE;
+    }
+
+    cmdres_sockaddr.sun_family = AF_UNIX;
+    strncpy(cmdres_sockaddr.sun_path, socket_path, sizeof(cmdres_sockaddr.sun_path));
+
+    ret = bind(cmdres_sock, (struct sockaddr*)&cmdres_sockaddr, sizeof(struct sockaddr_un));
+    if (ret < 0) {
+        ALOGE("rpmb_dev: Failed to bind command/response socket: %s: %s\n", socket_path,
+              strerror(errno));
+        return EXIT_FAILURE;
+    }
+
+    ret = listen(cmdres_sock, 1);
+    if (ret < 0) {
+        ALOGE("rpmb_dev: Failed to listen on command/response socket: %s\n", strerror(errno));
+        return EXIT_FAILURE;
+    }
+
+    while (true) {
+        int conn_sock = accept(cmdres_sock, NULL, NULL);
+        if (conn_sock < 0) {
+            ALOGE("rpmb_dev: Could not accept connection: %s\n", strerror(errno));
+            return EXIT_FAILURE;
+        }
+        ret = handle_conn(&s, conn_sock);
+        close(conn_sock);
+        if (ret) {
+            ALOGE("rpmb_dev: Connection terminated: %d", ret);
+        }
+    }
+}
diff --git a/trusty/utils/rpmb_dev/rpmb_dev.rc b/trusty/utils/rpmb_dev/rpmb_dev.rc
new file mode 100644
index 0000000..9f60e81
--- /dev/null
+++ b/trusty/utils/rpmb_dev/rpmb_dev.rc
@@ -0,0 +1,29 @@
+# RPMB Mock
+on post-fs-data
+    mkdir /data/vendor/ss
+    chown root system /data/vendor/ss
+    chmod 0770 /data/vendor/ss
+    rm /data/vendor/ss/rpmb_sock
+    start rpmb_mock_init
+    start rpmb_mock
+
+    # Storage proxy
+    start storageproxyd
+
+service storageproxyd /vendor/bin/storageproxyd -d /dev/trusty-ipc-dev0 \
+        -r /data/vendor/ss/rpmb_sock -p /data/vendor/ss -t sock
+    class main
+    disabled
+    user root
+
+service rpmb_mock_init /vendor/bin/rpmb_dev --dev /data/vendor/ss/RPMB_DATA --init --key "ea df 64 44 ea 65 5d 1c 87 27 d4 20 71 0d 53 42 dd 73 a3 38 63 e1 d7 94 c3 72 a6 ea e0 64 64 e6" --size 2048
+    disabled
+    user system
+    group system
+    oneshot
+
+service rpmb_mock /vendor/bin/rpmb_dev --dev /data/vendor/ss/RPMB_DATA --sock /data/vendor/ss/rpmb_sock
+    class main
+    disabled
+    user system
+    group system
diff --git a/trusty/utils/rpmb_dev/rpmb_protocol.h b/trusty/utils/rpmb_dev/rpmb_protocol.h
new file mode 100644
index 0000000..bfcb806
--- /dev/null
+++ b/trusty/utils/rpmb_dev/rpmb_protocol.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include "rpmb.h" /* For struct rpmb_key */
+
+#define MMC_READ_MULTIPLE_BLOCK 18
+#define MMC_WRITE_MULTIPLE_BLOCK 25
+#define MMC_RELIABLE_WRITE_FLAG (1 << 31)
+
+#define MMC_RSP_PRESENT (1 << 0)
+#define MMC_RSP_CRC (1 << 2)
+#define MMC_RSP_OPCODE (1 << 4)
+#define MMC_CMD_ADTC (1 << 5)
+#define MMC_RSP_SPI_S1 (1 << 7)
+#define MMC_RSP_R1 (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE)
+#define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1)
+
+struct rpmb_nonce {
+    uint8_t byte[16];
+};
+
+struct rpmb_u16 {
+    uint8_t byte[2];
+};
+
+struct rpmb_u32 {
+    uint8_t byte[4];
+};
+
+#define RPMB_PACKET_DATA_SIZE (256)
+
+struct rpmb_packet {
+    uint8_t pad[196];
+    struct rpmb_key key_mac;
+    uint8_t data[RPMB_PACKET_DATA_SIZE];
+    struct rpmb_nonce nonce;
+    struct rpmb_u32 write_counter;
+    struct rpmb_u16 address;
+    struct rpmb_u16 block_count;
+    struct rpmb_u16 result;
+    struct rpmb_u16 req_resp;
+};
+
+enum rpmb_request {
+    RPMB_REQ_PROGRAM_KEY = 0x0001,
+    RPMB_REQ_GET_COUNTER = 0x0002,
+    RPMB_REQ_DATA_WRITE = 0x0003,
+    RPMB_REQ_DATA_READ = 0x0004,
+    RPMB_REQ_RESULT_READ = 0x0005,
+};
+
+enum rpmb_response {
+    RPMB_RESP_PROGRAM_KEY = 0x0100,
+    RPMB_RESP_GET_COUNTER = 0x0200,
+    RPMB_RESP_DATA_WRITE = 0x0300,
+    RPMB_RESP_DATA_READ = 0x0400,
+};
+
+enum rpmb_result {
+    RPMB_RES_OK = 0x0000,
+    RPMB_RES_GENERAL_FAILURE = 0x0001,
+    RPMB_RES_AUTH_FAILURE = 0x0002,
+    RPMB_RES_COUNT_FAILURE = 0x0003,
+    RPMB_RES_ADDR_FAILURE = 0x0004,
+    RPMB_RES_WRITE_FAILURE = 0x0005,
+    RPMB_RES_READ_FAILURE = 0x0006,
+    RPMB_RES_NO_AUTH_KEY = 0x0007,
+
+    RPMB_RES_WRITE_COUNTER_EXPIRED = 0x0080,
+};
+
+static inline struct rpmb_u16 rpmb_u16(uint16_t val) {
+    struct rpmb_u16 ret = {{
+            (uint8_t)(val >> 8),
+            (uint8_t)(val >> 0),
+    }};
+    return ret;
+}
+
+static inline struct rpmb_u32 rpmb_u32(uint32_t val) {
+    struct rpmb_u32 ret = {{
+            (uint8_t)(val >> 24),
+            (uint8_t)(val >> 16),
+            (uint8_t)(val >> 8),
+            (uint8_t)(val >> 0),
+    }};
+    return ret;
+}
+
+static inline uint16_t rpmb_get_u16(struct rpmb_u16 u16) {
+    size_t i;
+    uint16_t val;
+
+    val = 0;
+    for (i = 0; i < sizeof(u16.byte); i++)
+        val = val << 8 | u16.byte[i];
+
+    return val;
+}
+
+static inline uint32_t rpmb_get_u32(struct rpmb_u32 u32) {
+    size_t i;
+    uint32_t val;
+
+    val = 0;
+    for (i = 0; i < sizeof(u32.byte); i++)
+        val = val << 8 | u32.byte[i];
+
+    return val;
+}
diff --git a/trusty/utils/trusty-ut-ctrl/Android.bp b/trusty/utils/trusty-ut-ctrl/Android.bp
index 77d1f70..9c8af7b 100644
--- a/trusty/utils/trusty-ut-ctrl/Android.bp
+++ b/trusty/utils/trusty-ut-ctrl/Android.bp
@@ -20,6 +20,8 @@
     shared_libs: [
         "libc",
         "liblog",
+    ],
+    static_libs: [
         "libtrusty",
     ],
     gtest: false,
diff --git a/usbd/Android.bp b/usbd/Android.bp
index 3afa7a9..6a339a1 100644
--- a/usbd/Android.bp
+++ b/usbd/Android.bp
@@ -5,7 +5,6 @@
     shared_libs: [
         "libbase",
         "libhidlbase",
-        "libhidltransport",
         "liblog",
         "libutils",
         "libhardware",